A hot die face granulation of melt-type materials, such as polymer melts, which pass through the melt channels of a die plate and are divided into granulate while still hot on the outlet surface. The die plate includes a die plate body having melt channels, which pass through the die plate body and feed onto an outlet surface distributed in ring-shaped formations, on which outlet surface the exiting melt strands are divided by a rotating blade, a granulation head comprising a die plate of this type, as well as an underwater or water ring granulator comprising a granulation head of this type. The invention also relates to a method for producing a die plate of this type.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B22F 5/10 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
B29B 13/02 - Conditioning or physical treatment of the material to be shaped by heating
B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
The invention relates to a sealing device of a system for sealing a fluid passage from a first component (1) to a second component (2), comprising at least one first sealing element (3) which is of an annular design to allow fluid to pass through it, includes at least one expansion slot (4) and has a first sealing surface (5) sealingly associated with the first component (1) and has a second sealing surface (8) sealingly associated with the second component (2), said at least one first sealing element (3) being flexible and said expansion slot (4) being designed in such a way that radial and resultant axial pressure of the fluid passing through there will cause the first sealing element (3) to expand in the radial direction and thus press radially in the direction against the first component (1), with said first sealing surface (5) with the expansion slot (4) being sealed against the first component (1) by abutment in the direction of the latter, and in such a way that the first sealing element (3) will press axially in the direction against the second component (2), with the second sealing surface (8) with the expansion slot (4) being sealed against the second component (2) by abutment in the direction of the latter.
F16J 15/06 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
B01D 29/05 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements supported
A cutting apparatus for use in an underwater pelletizer that has a nozzle head having a cutting surface that is rotationally symmetrical about a center axis of the nozzle head and in which nozzle openings are formed, has a drive shaft and at least one cutting head having cutting blades for cutting off melted plastic material exiting nozzle openings of a nozzle head and formed in strand shape, in the form of pellets, wherein the cutting head has a mechanism so the cutting blades can be simultaneously adjusted relative to the cutting surface.
The invention relates to a die plate (8) for hot die face granulation of melt-type materials, such as polymer melts, comprising a die plate body (10) having melt channels (7), which pass through the die plate body and feed onto an outlet surface distributed in ring-shaped formations, on which outlet surface the exiting melt strands are divided by a rotating blade. The invention also relates to a granulation head comprising a die plate of this type, as well as an underwater or water ring granulator comprising a granulation head of this type. According to the invention, the die plate body - including its at least one hollow chamber (1) provided for controlling the temperature of the die plate and/or for thermally insulating the melt channels, and the sections of the body surrounding the melt channels - is formed as an integral single-piece layered body by means of additive material application, wherein the material layers thereof are cured individually, layer by layer, so that the hollow chamber and melt channel walls are organically rounded and are therefore suitable for a temperature-control medium flow. The invention further relates to a method for producing a die plate of this type.
B29C 48/345 - Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
5.
PLASTIC STRAND GRANULATOR HAVING AN ADJUSTING MECHANISM FOR ADJUSTING THE CUTTING GAP
The invention relates to a plastic strand granulator for pelletizing plastic strands (26), comprising a cutting rotor (5), which is rotatable about a rotation axis (6); a blade strip (3), which is arranged relative to the cutting rotor (5) such that the blade strip (3) and the cutting rotor (5) together form a cutting gap for pelletizing plastic strands (26) supplied to the plastic strand granulator; and an adjustment mechanism for adjusting the cutting gap by relocation of a position of the blade strip (3) relative to the cutting rotor (5), wherein the adjustment mechanism comprises at least one actuator (7) which has a differential thread having a reducing translation ratio by means of which the position of the blade strip (3) is adjustable. The adjustment mechanism is advantageously automatically adjustable by means of a control circuit to a predefined cutting gap width, wherein the adjustment mechanism is adjusted according to vibration parameters which are taken on the blade strip or on the cutting rotor. In addition, ultrasound vibrations are introduced into the component in question and detected at some distance therefrom and evaluated.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B26D 5/02 - Means for moving the cutting member into its operative position for cutting
B26D 7/26 - Means for mounting or adjusting the cutting memberMeans for adjusting the stroke of the cutting member
B01J 2/20 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
6.
Cutting chamber housing for an underwater pelletizer
A cutting chamber housing for an underwater pelletizer having an inlet for cooling fluid and an outlet for cooling fluid with pellets. The cutting chamber housing encloses a cutting device having a rotary drive and a cutting head with rotating cutting knives. An extrusion head having a perforated plate projects into the cutting chamber housing. The cutting chamber housing has a stationary upper housing half and a movable lower housing half along a separation plane arranged at an oblique angle so that the cutting chamber housing can be opened at least downwards along the separation plane. Features such as slide rails, swivel joints, or rotary joints can be added to enable easy opening of the cutting chamber housing.
The invention relates to a cutting chamber housing (2) for an underwater pelletizer (1) having an inlet (3) for cooling fluid and an outlet (4) for cooling fluid with pellets. The cutting chamber housing (2) encloses a cutting device (5) having a rotary drive (6) and a cutting head (7) with rotating cutting knives (8) and an extrusion head (25) having a perforated plate (9) for outputting molten plastic formed into strands. The output direction of the plastic and the axis of rotation (6) of the cutting device (5) are oriented horizontally. The inlet direction of the cooling fluid and the outlet direction of the cooling fluid with pellets are oriented virtually vertically. The cutting chamber housing (2) has a stationary vertically upper housing half (11) and a movable vertically lower housing half (12) along a separation plane (13) arranged at an oblique angle with regard to a horizontally oriented output direction of the plastic, said separation plane (13) extending, as seen in side view of the cutting chamber housing (2), obliquely in the longitudinal direction of the cutting chamber housing (2) or, as seen in front view of the perforated plate (9), obliquely in the transverse direction of the cutting chamber housing (2).
The invention relates to a method for producing a plastic granulate (16), in which a process fluid (12) is contained in a process chamber (10) where an underwater granulation takes place and the process fluid in the process chamber has a temperature greater than 120° C. A process pressure of at least 2.0 bar is obtained in the process chamber, at which a granulation of the plastic strands (14) into plastic granulate occurs. From the process chamber, a mixture (18) of process fluid and plastic granulate is diverted into a first cooling zone (25) during cooling of the plastic granulate, while maintaining the process pressure. In a first separating device (22), the plastic granulate is separated from the process fluid under process pressure. In the process chamber, the process fluid has a temperature in the range from 120° C. to 160° C., and the process pressure obtained there is greater than the pressure of the vapour pressure curve of the process fluid. After separation from the process fluid in the first separating device, the plastic granulate is fed continuously in a line to a dealdehydization container (46).
B01J 2/20 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
F26B 5/16 - Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mouldDrying solid materials or objects by processes not involving the application of heat by admixture with sorbent materials
The invention relates to a filter assembly (10, 110) for a fluid (174), having a filter housing (12, 112). Said filter housing (12, 112) has an inlet opening (18, 118) for an inlet channel (20, 120) and an outlet opening (36, 122) for an outlet channel (34, 124). A through-flow element (24, 132) is located in the filter housing (12, 112). Said through-flow element (24, 132) has a filter support wall (28, 138), thereby forming a hollow body (26, 134) having an interior space (22, 136) and an exterior space (32). The interior space (22, 136) is coupled to the inlet channel (20, 120) and the exterior space (32) is coupled to the outlet channel (34, 124). The filter support wall (28, 138) has openings (29) through which the fluid (174) is conducted for filtering. A movable cleaning plunger (38, 150) is provided for removing deposits from the filter support wall (28, 138).
The invention relates to a device for drying granules, having a housing (1), which has a granule process fluid inlet (6), a granule outlet (7) and a fluid outlet, and a rotatable rotor (2) arranged therein, having rotor blades (3) attached thereto, which impress a movement direction upon the granules and a process fluid, such that the process fluid, in which the granules are originally located, can be separated there from the granules in a fluid discharge region having at least one sieve (4) surrounding the outside of the rotor (2) at least in sections, having sieve openings (5) having a size smaller than the granules, by passing through from a sieve front side to a sieve back side, wherein the rotor blades (3) are arranged in a spiral-like manner at least in sections on the rotor shaft (9) and have an outer contour, at least in sections, which corresponds to the inner contour of the sieve (4).
F26B 17/22 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors moving materials in stationary chambers the axis of rotation being vertical or steeply inclined
F26B 17/24 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by shooting or throwing the materials
F26B 5/08 - Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
The present invention relates to a device for drying granules, having a housing (1) with a granule-process fluid inlet (6), with a granule outlet (7) and with a fluid outlet, and having a rotatable rotor (2) which is arranged in said housing and which has rotor blades (3) arranged thereon, which rotor blades impart a movement direction to the granules and to a process fluid in each case, such that, there, the process fluid in which the granules are originally situated can be separated from the granules in a fluid discharge region with at least one screen (4) which surrounds the rotor (2) at least in sections at the outside and which has screen openings (5) with a size smaller than the granules, by virtue of said process fluid passing through from a screen front side to a screen rear side, wherein the rotor (2) has a hollow rotor shaft (9) with rotor bores (10) therein at least in sections, wherein a fan impeller (11) is attached coaxially to the rotor shaft (9) such that, by means of the fan impeller (11), air can be drawn into the interior of the hollow rotor shaft (9) via the granule outlet (7) and the rotor bores (10) and can be discharged from the housing (1) via a fan impeller air outlet (8).
F26B 17/24 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by shooting or throwing the materials
F26B 5/08 - Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
Granulating installation, comprising a carrying rail (3); a granulator (5), which is arranged suspended on the carrier rail (3); a suspension base (2); a carrying arm (10), which at a first end is mounted on the suspension base (2) by means of a first pivot joint (11) and at a second end is connected to the carrying rail (3) in an articulated manner by means of a second pivot joint (12); and an articulated arm (20) with a first articulated arm fork (21), which is connected to a second articulated arm fork (22) by means of a third pivot joint (23), wherein the first articulated arm fork (21) is mounted on the suspension base (2) by means of a fourth pivot joint (24), and the second articulated arm fork (22) is connected to the carrying rail (3) in an articulated manner by means of a fifth pivot joint (5), wherein the first to fifth pivot joints (11, 12, 23, 24, 25) have in each case a substantially vertical pivot axis.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B29C 47/08 - Component parts, details or accessories; Auxiliary operations
Dropletization apparatus for producing granular particles (9) from a melt, having a caster nozzle (3) with bores, a container (1) with a falling zone (f) in a gas space (4) and a cooling zone (k) with a cooling fluid (5), into which the drops of granular particles (8) are immersed, and a cooling fluid bath (12), in which the granular particles (9) formed remain, at least for a time, a discharge device (10), by means of which the granular particles (9) can be discharged from the container (1), and a separating device (11), with which the granular particles (9) can be separated from the cooling fluid (5), wherein the length of the falling zone (f) in the gas space (4) can be set, and a catching device (6), which is at least partly formed as a truncated cone, is provided after the falling zone (f), wherein the catching device (6) has a peripheral region of the lateral surface that has guiding slits (13) arranged transversely in relation to the centre axis of the truncated cone, and so the granular particles (9) and/or the cooling fluid (5) can be carried away from the catching device (6) with a circumferential movement component.
B29B 9/10 - Making granules by moulding the material, i.e. treating it in the molten state
B01J 2/04 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
B01J 2/18 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic using a vibrating apparatus
A pelletizing system including a supporting rail, a pelletizer that is suspended from the supporting rail, a suspension base, a supporting arm, and an articulated arm. The supporting arm is supported at a first end on the suspension base by means of a first swivel joint and is hinged to the supporting rail at a second end by means of a second swivel joint. The articulated arm includes a first articulated arm branch which is connected to a second articulated arm branch by a third swivel joint. The first articulated arm branch is supported on the suspension base by means of a fourth swivel joint, and the second articulated arm branch is hinged to the supporting rail by means of a fifth swivel joint. In an embodiment, the first through fifth swivel joints each have an essentially vertical swivel axis.
B01J 2/20 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
B29K 23/00 - Use of polyalkenes as moulding material
A method and device for extruding plastics, preferably in conjunction with plastic strand granulation, wherein the plastic, which is heated to an extrusion temperature and extruded through one or more dies (7) of a die head (1), is irradiated with electromagnetic radiation immediately at the die outlet in such a way that plastic remaining in the region of the die outlet is heated to a higher temperature, which is higher than the extrusion temperature, preferably higher than the decomposition temperature and and optionally even higher than the combustion temperature of the plastic. At the same time, the die head (1) can be irradiated with the electromagnetic radiation in such a way that the surface of the inner wall of the dies (7) from the die outlet to at least 5 mm into the die head (1) is heated to a temperature that is higher than the extrusion temperature and is preferably below the decomposition temperature of the plastic, to avoid deposits of plastic on the die outlet.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B29C 47/88 - Heating or cooling the stream of extruded material
The invention relates to a plastic strand granulator (1), comprising a housing (2) having an inlet opening (3) for introducing at least one plastic strand (7), a device (4) arranged in the housing for producing granulate (8) from the at least one plastic strand, and an output shaft (5) for discharging the produced granulate, wherein the output shaft has an outlet opening (6) having an open outlet cross-section. The plastic strand granulator is designed to generate a backing-up (9) of the granulate in the output shaft, independently of a production rate of the granulate, in order to seal the outlet opening for sound dampening.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
A squeezing roller granulator that has a squeezing roller pair composed of a toothed pressure roller and a toothed squeezing roller. The teeth of the pressure roller and the squeezing roller have tooth flanks that are situated between a tooth root region and a tooth tip region. The tooth root region has an outer diameter that is smaller than the outer diameter of the tooth tip region, and the tooth tip region of at least one of the rollers of the squeezing roller pair has three squeezing zones including a middle squeezing zone, which define different distances between the tooth tip regions with a minimum distance in the region of the middle squeezing zone, and the contour of the tooth flanks and the tooth root region of the rollers of the squeezing roller pair defines a maximum cross-section of granulate cushions to be formed.
B01J 2/22 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29B 9/12 - Making granules characterised by structure or composition
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
The invention relates to a method for producing a plastic granulate (16), in which a process fluid (12) is contained in a process chamber (10) where an underwater granulation takes place and the process fluid in the process chamber has a temperature greater than 120 °C. A process pressure of at least 2.0 bar is obtained in the process chamber, at which a granulation of the plastic strands (14) into plastic granulate occurs. From the process chamber, a mixture (18) of process fluid and plastic granulate is diverted into a first cooling zone (25) during cooling of the plastic granulate, while maintaining the process pressure. In a first separating device (22), the plastic granulate is separated from the process fluid under process pressure. In the process chamber, the process fluid has a temperature in the range from 120 °C to 160 °C, and the process pressure obtained there is greater than the pressure of the vapour pressure curve of the process fluid. After separation from the process fluid in the first separating device, the plastic granulate is fed continuously in a line to a dealdehydization container (46).
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
A granulating device having a cutting knife head for cutting strands of melt into granules in a granulator housing. A perforated plate with die openings, from which strands of melt is extruded into the granulator housing, projects into the granulator housing. The cutting knife head, which has at least one cutting knife arranged radially on its outer circumference, is driven by a rotating drive shaft. The granulator housing has a first coolant inlet and an outlet for a mixture of coolant and granules. In addition, the granulator housing has a second coolant inlet that is independent of the first coolant inlet and that supplies a coolant flow for direct granule cooling to at least one co-rotating cooling nozzle bore in the cutting knife head through a coolant chamber and a stationary coolant pipe oriented coaxially to the drive shaft.
Filtering device for plastic melts, comprising a filter replacement device (3), at least one filter housing (4), at least one filter stud (5, 6) which is axially movable inside said housing (4) and has at least one filtering chamber (9, 10) transversely to the longitudinal axis (7, 8) thereof; the filtering chamber (9, 10), which includes at least one filter screen (11, 12), is horizontally oriented in an operating position during a filtering operation and is fluidically connected to at least one fluid delivery duct (14) and at least one fluid discharge duct (15) in the filter housing (4); in order to replace the filter screen (11, 12), the filtering chamber (9, 10) can be moved into a vertical filter screen replacement position (16) outside the filter housing (4). The filter replacement device (3) includes at least one actuator (17) which drives a pushing mechanism (18) and, during a pushing motion of the pushing mechanism (18) into the filter screen replacement position (16), axially moves the filter stud (5, 6) containing the filter screen (11, 12) in the longitudinal direction of the filter stud (5, 6) and pivots the filter stud (5, 6) from the horizontal orientation in the operating position (13) into the vertical filter screen replacement position (16) by means of a gate (20).
A squeezing-roll granulator which has a squeezing roller pair (60) made of a toothed pressure roller (2) and a toothed squeezing roller (3), wherein the toothing (4) of the pressure roller and of the squeezing roller has tooth flanks (5, 6) which are arranged between a tooth base region (7) and a tooth crown region (8 8'), and wherein the tooth base region has an outer diameter (d) which is smaller than the outer diameter (D) of the tooth crown region, and wherein at least one of the two rollers of the squeezing roller pair has three squeezing zones (9, 10, 11) in the tooth crown region comprising a central squeezing zone (10), these zones define different spacings between the tooth crown regions with a minimum spacing (a) in the region of the central squeezing zone, and wherein the contour of the tooth flanks and of the tooth base region of the rollers of the squeezing roller pair defines a maximum cross section of the granulate cushions (12) to be formed.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29B 9/12 - Making granules characterised by structure or composition
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B29C 47/04 - of multilayered or multicoloured articles
B01J 2/22 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
An extrusion head having a perforated plate of a granulating system. The extrusion head can have a head part and a perforated plate with a perforated-plate wear insert, a perforated-plate main body, a central inflow cone, an inflow cone part, a plurality of nozzle channels, a plurality of perforated dies, and at least one corrosion protected fastener. The perforated-plate can be detachably fastened to the head part. The head part can have at least one central melt channel into which the inflow cone part projects and distributes a melt flow among nozzle channels which can be arranged in the shape of a ring and among the perforated dies which can be arranged in at least one ring. The at least one fastener can be positioned in a central region of the at least one ring of the perforated dies.
An adapter (1) for securing a steep-angle tapered clamping tool (20) to a quick-acting clamping system comprises a planar bearing surface (2) for supporting the adapter (1) on the quick-acting clamping system, and a clamping bolt (3) which is arranged on the bearing surface (2) and is designed to be accommodated on the quick-acting clamping system and secure the adapter (1) to the quick-acting clamping system when the quick-acting clamping system is actuated; a cavity (4) in the adapter (1) has a conical wall section (5) for accommodating a steep-angle taper (21) of the steep-angle tapered clamping tool (20).
The invention relates to a device for filtering a plastic melt, comprising a housing and a filter pin which can be axially and/or radially adjusted in the housing. In an operating position of the filter pin, plastic melt passes from an inlet channel to an outlet channel through a filter device removably secured to the filter pin, and the filter device is freely accessible in order to exchange the filter device in a filter change position of the filter pin. At least one discharge channel is formed in the filter pin, and an end of the at least one discharge channel is fluidically connected to the at least one inlet channel in a starting position of the filter pin in order to receive the plastic melt supplied through the at least one inlet channel and to discharge the plastic melt at another end of the at least one discharge channel.
B01D 29/00 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor
B29C 47/08 - Component parts, details or accessories; Auxiliary operations
28.
GUIDE ROLLER OF A PAIR OF FEED ROLLERS OF A GRANULATING DEVICE
The invention relates to a guide roller of a pair of feed rollers of a granulating device of plastic strands. Said guide roller (1 - 9) comprises a centre (11) and at least one outer hard rubber layer (12) which forms a sleeve (10) which can be pushed onto the centre (11) of the guide roller (1) and can be removed from the centre (11).
B65H 51/10 - Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
F16C 13/00 - Rolls, drums, discs, or the likeBearings or mountings therefor
The invention refers to a pelletizing device for cutting plastic strands into pellets having a cutting rotor (20) which is rotated by a drive system (22), and cutting blades (24) distributed over a circumference (26) of the cutting rotor (20) having cutting edges (78), root areas (44) of which cutting blades (24) are arranged in grooves (34) in the rotor body (20), each cutting blade (24) having a recess (46) parallel to the cutting edge (78), which recesses (46) are covered by one of the grooves (34) to receive and interact with one clamping device (48) being held in an opposite recess (42) in the rotor body (20), wherein each clamping device (48) comprises a radially extendable clamping sleeve (50) and a spreading device (58, 64, 70) to widen the clamping sleeve (50) at least radially with respect to the clamping sleeve (50). The invention is characterized in that only one clamping sleeve (50) per each cutting blade (24) is provided in the groove (34), said recess (46) of the cutting blade (24) extends from one flat end (80) of the cutting blade (24) at least close to the other flat end (81) of the cutting blade (24), said clamping sleeve (50) having an outer contour (52) which fits within the recess (46) in the cutting blade (24) and the opposite recess (42).
B02C 18/14 - Disintegrating by knives or other cutting or tearing members which chop material into fragmentsMincing machines or similar apparatus using worms or the like with rotating knives within horizontal containers
Apparatus and process for producing particles of granulated material from a molten material, with a perforated plate (2) having nozzles (1) arranged therein, wherein a cutting arrangement with a blade head (4) having at least one blade (3) lies opposite the perforated plate, wherein the apparatus furthermore has a cutting chamber (7) in a housing (6), through which cutting chamber a cooling medium introduced into the cutting chamber (7) from an inflow device (8, 9) flows, wherein, at least in certain portions extensively at least in the region of rotation of the at least one blade, one or more additional feed opening(s) (12, 13) for feeding an additional stream of cooling medium to the cutting chamber is/are provided with such an orientation that this additional cooling medium stream differs from the cooling medium flowing in through the inflow nozzle arrangement (9) at least in one of the following parameters: phase, direction, speed, pressure, temperature, density, throughput and/or composition.
Process for producing particles of granulated material from a molten material, the latter being extruded by being pressed through nozzle openings (8) in a perforated plate (7) into a cutting chamber (10). In the process, the molten material emerging from the nozzle openings in the perforated plate is separated into molten granules by at least one rotating cutting blade (9), which sweeps over the nozzle openings, in the cutting chamber. A first cooling fluid stream (11) of a first cooling fluid medium is fed via a first cooling fluid inlet (21) to at least a first cooling fluid opening (31), and is used to cool the molten material when it exits from and is severed at the perforated plate. Furthermore, a second cooling fluid stream (12) of a second cooling fluid medium, which differs from the first cooling fluid medium, is fed via a second cooling fluid inlet (22) to at least a second cooling fluid opening (32) downstream of the perforated plate, and is used to additionally cool the granules and carry them to an outlet (15) of the cutting chamber.
Granulating device (1 to 4) with a cutting knife head (5) for dividing up strands of melt into granules in a granulator housing (6). A perforated plate (7) with die openings (8), from which strands of melt can be extruded into the granulator housing, protrudes into the granulator housing. The cutting knife head (5), which has at least one cutting knife (10) arranged radially on its outer circumference, is driven by a rotating drive shaft (9). The granulator housing has a first cooling fluid inlet opening (11) and an outlet opening (12) for a mixture of cooling fluid and granules. Furthermore, the granulator housing has a second cooling fluid inlet opening (13), which is independent of the first cooling fluid inlet opening and, by way of a cooling fluid chamber (18) and a stationary cooling fluid tube (15) aligned coaxially in relation to the drive shaft, supplies at least one co-rotating cooling nozzle bore (14) in the cutting knife head with a stream of cooling fluid for direct granule cooling.
A method and device for continuously drying and crystallizing water-flushed granulate. The method comprises the steps of: feeding water-flushed granulate into a pre-dryer, pre-drying granulate in the pre-dryer, conveying pre-dried granulate into a dryer/crystallizer, and discharging crystallized granulate from the dryer/crystallizer. An air conditioning means produces temperature-controlled and humidity-conditioned air that is delivered to the dryer/crystallizer, wherein the exhaust air of the dryer/crystallizer is delivered to the pre-dryer, and wherein the exhaust air of the pre-dryer is returned to the air conditioning means forming a closed air circuit is formed by the dryer/crystallizer, pre-dryer, and air conditioning means. The device comprises a pre-dryer, a dryer/crystallizer, an air conditioning means, and optionally a control unit.
F26B 3/02 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
F26B 17/00 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
F26B 21/00 - Arrangements for supplying or controlling air or gases for drying solid materials or objects
F26B 17/02 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materialsMachines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts propelling the materials over stationary surfaces
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
A granulating device for granulating thermoplastic materials. The device has a die head, a cutting chamber housing, and at least one insulating element comprising thermally insulating material. The insulating element is situated between a die head element and a cutting chamber housing element. At least one tempering device situated between the insulating element and cutting chamber housing element or adjacent to the insulating element is provided. The tempering device acts to remove unwanted heat introduced in its vicinity, or to replenish heat undesirably removed from its vicinity.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B01J 2/20 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
METHOD FOR PRODUCING SUPERFICIALLY CRYSTALLINE SPHERICAL GRANULES BY MEANS OF AIR-COOLED HOT DIE FACE PELLETIZING AND APPARATUS FOR CARRYING OUT THE METHOD
The invention relates to a method and to an apparatus for producing superficially crystalline spherical granules by means of air-cooled hot die face pelletizing in a cutting chamber (2), wherein initially the crystallisable plastic material is melted and then the crystallisable plastic material is extruded through a perforated plate (3). During the air-cooled hot die face pelletizing with at least one cutting blade (5) moved relative to the perforated plate (3), the perforated plate (3) is temperature-controlled and a viscosity of the melt of the plastic material is retained within nozzle orifices (4) of the perforated plate (3). A superficial cooling of the dry-cut granules is performed by means of a centripetally inflowing process gas for cooling to a superficial crystal nucleation temperature, the crystal nucleation temperature lying below an optimal crystal growth temperature and above a glass transition temperature of the crystallisable plastic material. Then, by control of the quantity of process gas at an adiabatically set temperature, an average granule temperature is maintained in a range of an optimal crystal nucleation temperature at a level above the crystal nucleation temperature and below a melting temperature of the plastic material.
The invention relates to a device (10) and to a method for drying plastic granular-material grains after granulation, comprising a drying segment (11) based on the centrifugal dryer principle, in which the granular material is dried and through which the granular materials pass at a speed of conveyance, and a granular-material outlet (30), through which the dried granular material is discharged from the drying segment, wherein the drying segment is dimensioned in such a way and/or the speed of conveyance of the granular materials through the drying segment is matched in such a way that a dwell time in the drying segment results, which dwell time enables such a crystallization of the granular materials that the granular materials are at least partially crystallized at the surface at the granular-material outlet.
B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
F26B 17/24 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by shooting or throwing the materials
37.
EXTRUSION HEAD HAVING A PERFORATED PLATE OF A GRANULATING SYSTEM
The invention relates to an extrusion head (1, 2, 3) having a perforated plate (4) of a granulating system (30). The extrusion head (1, 2, 3) has a head part (32) and a perforated plate (4). The perforated plate has a central cone part (10) on which flow is incident, nozzle channels (9), and hole nozzles (7), and is detachably fastened to the head part (32). The head part (32) of the extrusion head (1, 2, 3) has at least one central melt channel (44), into which the cone part (10) of the perforated plate (4) on which flow is incident protrudes. The cone part distributes the melt flow among annularly arranged nozzle channels (9) and among the hole nozzles (7) arranged at least in one ring (8). The perforated plate (4) has a multi-part construction and comprises a perforated-plate wear insert (5), a perforated-plate main body (6), and a cone part (10) on which flow is incident. The perforated plate has a corrosion-protected fastening part (29), which detachably holds the multi-part perforated plate (4) together. The at least one fastening part (29) is arranged in a central region of the at least one ring (8) of the hole nozzles (7).
The invention relates to a method for controlling a melt-processing installation, wherein the installation comprises a melt-feed device (1), a filtering device (2) and a melt-processing device (3), or in addition thereto a melt pump (6), wherein a maximum achievable rate of volume change of the volumetric feed per unit of time of the melt-feed device (1) and/or the melt pump (6) is determined, a maximum volume deviation value of the volume feed per unit of time to the melt-processing device (3) is determined, and a volume change between the melt-feed device (1) and/or melt pump (6) and the melt-processing device (3) is set in the filtering device (2) in such a manner that a rate of volume change of the filtering device (2) resulting from this volume change per unit of time is smaller than or equal to or so little larger than the maximum achievable rate of volume change of the melt-feed device (1) and/or the melt pump (6), that the maximum volume deviation value is not exceeded.
Squeezing-roll granulator (1) which has a cylindrical pressure roll (2) and a toothed squeezing roll (3), wherein the toothing (4) of the squeezing roll (3) has tooth flanks (5, 6) which are arranged between a tooth root region (7) and a tooth crown region (8), and wherein the tooth root region (7) has an external diameter (d) which is smaller than the external diameter (D) of the tooth crown region (8), and wherein the tooth crown region (8) of the squeezing roll (3) has three squeezing zones (9, 10, 11) with a central squeezing zone (10) which define different spacings from the cylindrical pressure roll (2) with a minimum spacing (a) in the region of the central squeezing zone (10), and wherein the contour of the tooth flanks (5, 6) and of the tooth root region (7) of the squeezing roll (3) defines a maximum cross section of granulate cushions (12) in interaction with the contour of the cylindrical pressure roll (2).
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29B 9/12 - Making granules characterised by structure or composition
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
The invention relates to a method for making granules from strands of a melt of a thermoplastic polymer material having the steps of creating and providing the melt of the material, discharging the material in multiple strands from a perforated plate, impinging the strands with an impinging flow fluid from an impinging flow nozzle, cooling the strands and dividing the strands into individual granules, wherein the strands are impinged by the impinging flow fluid only during discharge from the perforated plate, and wherein, as it is discharged from the impinging flow nozzle, the impinging flow fluid has a temperature above the melting temperature of the material and has a discharge velocity in the range from 50 m/sec to 300 m/sec; the invention also relates to a device for carrying out the method with an impinging flow device that can be pivoted by means of a pivoting joint.
B29C 47/08 - Component parts, details or accessories; Auxiliary operations
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29B 9/14 - Making granules characterised by structure or composition fibre-reinforced
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
41.
Shredder for producing particles from a sheet material
A shredder for producing particles from a sheet material is disclosed herein. The shredder can have a longitudinal cutting device with a first cutting roller and a second cutting roller. A transverse cutting device can be positioned after the longitudinal cutting device. The first cutting roller and the second cutting roller can each have special profiles.
B02C 18/14 - Disintegrating by knives or other cutting or tearing members which chop material into fragmentsMincing machines or similar apparatus using worms or the like with rotating knives within horizontal containers
B26D 1/24 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
B26D 1/38 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
42.
PERFORATED PLATE FOR PRODUCING GRANULES FROM THERMOPLASTIC MATERIAL AND METHOD FOR PRODUCING SUCH A PERFORATED PLATE
Perforated plate (10) for producing granules from thermoplastic material, comprising a multiplicity of die orifices (30), wherein the die orifices are respectively of such a length that they have a substantially equal throughput of melt material.
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B29C 47/88 - Heating or cooling the stream of extruded material
43.
METHOD AND DEVICE FOR DRYING AND CRYSTALLIZING GRANULATE
The invention relates to a method and a device for continuously drying and crystallizing granulate which is flushed with water. The method has the steps of feeding granulate (11) which is flushed with water into a pre-dryer (20); pre-drying the granulate in the pre-dryer; conveying the pre-dried granulate (21) into a dryer/crystallizer (30); and dispensing crystallized granulate (31) out of the dryer/crystallizer. Air conditioning means (40) generate air (42) which is temperature-controlled and the degree of humidity of which is conditioned, and said air is fed to the dryer/crystallizer. The exhaust air (32) of the dryer/crystallizer is fed to the pre-dryer, and the exhaust air (22) of the pre-dryer is returned to the air conditioning means such that a closed air circuit is formed by the dryer/crystallizer, pre-dryer, and the air-conditioning means.
Disclosed are a device and a method for producing pellets from a melt, said device comprising a perforated plate (2) in which nozzles (1) are arranged, the melt being discharged from said nozzles. The device further comprises a cutting chamber (7) in a housing (6, 6a, 6b). The cutting chamber adjoins the perforated plate (2) and surrounds at least part of the cutting arrangement. A gaseous cooling medium flows through the cutting chamber so that the pellets made of the melted material solidify in the cooling medium which is introduced into the cutting chamber (7) via a feeding unit (8, 9). Furthermore, the cooling medium and the pellets located therein are fed to an outlet (11) in the cutting chamber (7), the gaseous cooling medium being cooled by means of a throttle mechanism (9, 10) using adiabatic expansion.
Feed roll (1) for a strand pelletizer, comprising a metal roll core (2) and a sheathing (3) arranged on the roll core (2), wherein the sheathing (3) is formed by a composite of a plastics material and at least one metal mesh (4), and a method for the production thereof, comprising the steps of: providing a metal roll core (2), arranging a metal mesh on the roll core (2) and encapsulating it with a plastics material to form the sheathing (3).
Disclosed is a nozzle plate (10) for a granulation device, comprising a plurality of nozzles (20) for letting melt penetrate therethrough. Said nozzles (20) are arranged in such a way as to lie along a circle running about a central axis (M). Each nozzle (20) has a nozzle duct (21) and at least one nozzle port (22). A cavity (30) for receiving a free-flowing melt is formed on the rear side (11) of the nozzle plate (10). Said cavity (30) is centered about the central axis. A plurality of flow ducts (40) is formed in the nozzle plate (10). Each of said flow ducts (40) runs from the cavity (30) to one of the plurality of nozzles (20), in a direction extending parallel to the rear surface (11) and radially away from the central axis. Also disclosed is a granulation device comprising such a nozzle plate.
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
The invention relates to a device for producing granules from a melt material, comprising a perforated plate (2) that has nozzles located therein (1) out of which said melt material leaves and, lying opposite said perforated plate (2), there being a cutting arrangement which comprises a blade head with at least one blade (3), and a blade shaft (5), driven by a motor. The device comprises a cutting chamber (7) in a housing (6, 6a, 6b) which chamber is attached to the perforated plate (2), surrounds at least the at least one blade (3) of the cutting arrangement, and has a cooling medium passing through it. A cooling medium centripetal flow is formed at least in the region of rotation, and said cooling medium and the granules present therein are subsequently fed to an outlet (11) of the cutting chamber (7). The inflow nozzle arrangement (9) is designed as an annular slotted nozzle that can be adjusted in terms of slot width.
Disclosed is a granulation device (100) for pelletizing thermoplastic materials, comprising a feeder head, a cutting chamber housing, and at least one insulation (20; 124, 125) that is made of heat-insulating material and is arranged between a feeder head element (10, 110) and an element (30; 134) of the cutting chamber housing. At least one temperature control unit (12, 32; 119; 132, 135) is arranged between the insulation (20; 124, 125) and the element (30; 134) of the cutting chamber housing or in the element (30; 134) of the cutting chamber housing, in a region adjoining the insulation (124).
The invention relates to a nozzle device for producing continuous filaments from a plastic melt for granulation, having a nozzle main body (1) in which at least one nozzle channel (2) and at least one nozzle exit opening (5) are formed, wherein at least one protrusion (3) projecting into the interior of the nozzle channel is formed on the inside surface of the nozzle channel.
A device for filtering a plastic melt, having a housing that has at least one inlet passage and at least one outlet passage for the plastic melt. The at least one inlet passage is separated from the at least one outlet passage by at least one filter cavity for accommodating at least one filter piston that is axially displaceable therein. The at least one filter piston has at least one filter base body with a filter surface with filter openings passing through the filter base body there, through which openings the plastic melt passes into a filtrate cavity in the filter base body. The filtrate cavity is fluidically connected to the at least one outlet passage, and the filter surface of the filter base body is enclosed by a flexible, elastic filter screen in such a manner that this filter screen can be clamped onto the filter base body there.
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
51.
CONTINUOUS CASTING DEVICE FOR PRODUCING GRANULES FROM MELT MATERIAL AND METHOD FOR THE OPERATION THEREOF
The invention relates to a device and a method for producing granules with a continuous casting device (1), from which at least one strand (2) of a plastic material exits and with a belt conveyor device (3) having at least one conveyor belt (4) on which the strand can be supplied to a granulation device (5), which divides the strand into granules (6), wherein a lead-in device (20) with at least one first strand guiding surface (21) is provided. The lead-in device is movable along an axis parallel to the conveyance direction of the conveyor belt, and the at least one strand of plastic material exiting from the continuous casting device can reach the first strand guiding surface in a first position of the lead-in device. The first strand guiding surface is designed to guide the strand reaching the strand guidance surface in the first position in a direction pointing away from the granulation device.
A device and a method for reducing the pressure of a fluid containing granules are disclosed, wherein a free space (4) free of moving rotor blades is provided in a housing (1) with an inlet (2) and an outlet (3), wherein the wall shape of the housing (1) and of the free space (4) therein apply a centripetal flow component to the fluid containing the granules flowing therethrough, so that the pressure of the fluid containing the granules decreases after the flow has passed through the device, and wherein a rotational motion is applied to the fluid containing the granules in the area of the single outlet (3) arranged in the central area of the free space (4).
The invention relates to a cutting device for a granulator for obtaining granules from cutting plastic strands which are discharged from nozzles, said cutting device comprising a cutting rotor which is connected to the drive shaft by means of a Cardan joint piece comprising a driven part and a drive part. Said drive part and the driven part comprise a force transfer piece, respectively having a prong like shape such that the prongs rotate about the force transfer piece when they are pivoted at about 90 degrees in relation to each other. Each prong supports the axis which extends through the force transfer piece and both axes are offset in relation to each other essentially about 90 degrees.
B02C 18/16 - Disintegrating by knives or other cutting or tearing members which chop material into fragmentsMincing machines or similar apparatus using worms or the like with rotating knives Details
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
The invention relates to a method for making granules from strands of a melt of thermoplastic polymer material, comprising the steps of creating and providing the melt of thermoplastic polymer material, discharging the thermoplastic polymer material in multiple strands from a perforated plate, impinging the strands with an impinging flow fluid from an impinging flow nozzle, cooling the strands and dividing the strands up into individual granules, wherein the strands are only impinged by the impinging flow fluid as they are discharged from the perforated plate, and wherein, as it is discharged from the impinging flow nozzle, the impinging flow fluid has a temperature above the melting temperature of the polymer material and has a discharge rate in the range from 50 m/sec to 300 m/sec, and relates to a device for carrying out the method with an impinging flow device that can be pivoted by means of a pivoting joint.
A device for producing pellets that has a perforated plate for extruding a melt into a process chamber, and a cutting device for cutting the melt into pellets. The process chamber can have an inlet and an outlet. A conveying device can deliver a process fluid through the inlet, and carry the process fluid and pellets through the outlet. The inlet can have an inlet opening and an inlet channel. A three-way valve can be located between the inlet channel, a process fluid supply line, and a process fluid discharge line, and below the inlet. The outlet can have a discharge opening and an outlet channel. A pneumatic device can provide compressed air to the process chamber for emptying and expelling the process fluid.
A process for production of polyethylene terephthalate pellets includes the steps of: production of a melt of polyethylene terephthalate material; production of polyethylene terephthalate pellets from the melt by means of underwater pelletization into a process fluid; removal of the polyethylene terephthalate pellets from the site of underwater pelletization in the process fluid; crystallization of the polyethylene terephthalate pellets in the process fluid, wherein a surface of the polyethylene terephthalate pellets is crystallized and an interior of the polyethylene terephthalate pellets remains amorphous.
The invention relates to a method for producing pharmaceutical products from a melt material, wherein the melt material emerges from nozzles in a perforated plate and is then granulated, and wherein a blade arrangement having at least one blade, which is driven by a motor, is disposed opposite the perforated plate, so that the at least one blade passes over the nozzles in the perforated plate and in so doing cuts off granules of the emerging melt material. A housing is provided which is connected to the perforated plate, and at least surrounds the at least one blade of the blade arrangement, wherein a cooling medium flows through said housing, so that the granules of melt material are solidified in the cooling medium which is introduced radially inwards, or substantially radially inwards, from outside all across the circumference from an inflow device formed by a separate inflow chamber, which surrounds the circumference of the housing in the range of rotation of the at least one blade, and from a circumferentially disposed inflow nozzle arrangement between the inflow chamber and the housing. A centripetal or at least substantially centripetal flow of the cooling medium is formed at least in the range of rotation, and furthermore the cooling medium and the granules located therein are fed to an outlet in the housing, wherein the cooling medium is a gaseous cooling medium.
A granulating device for producing pellets from a plastic material can have a die plate, a cutting chamber housing adjoining the die plate, and a cutting device with a cutter. The cutting device can be driven via a cutter shaft by a cutter drive device located in a cutter drive housing. The cutting chamber housing can have a cutting chamber housing flange section connected with a cutter drive housing flange section of the cutter drive housing by a connecting element. The connecting element can have a clamping collar arranged to enclose at least one section of the flange sections, and an eccentric closure element. The eccentric closure element can be connected to the clamping collar, and can have an index opening. In a closure position, the index opening can be located in alignment with a locating pin that passes through the index opening.
The invention relates to a perforated plate (1) of a granulating device for thermoplastic plastic material, comprising nozzle openings (2), wherein at least one side of the perforated plate (1) comprises in at least one region a functional layer (3). Said functional layer (3) is thermally insulated in relation to the base material of the perforated plate, is more abrasion-resistant relative to the base material of the perforated plate and consists of an enamel coating.
A cutter head holder for blades of an underwater granulator for granulating pellets from a plastic melt that emerges from a perforated plate into a process chamber of a housing of an underwater granulator.
The invention relates to a cutting apparatus for a granulator for cutting granules from plastics-material strands emerging from nozzles (8), having a knife rotor (6), which is connected to a drive shaft (1) via an articulation component having a drive part and via a driven part carrying the knife rotor. The drive part (2) is inserted into a spherical head (3) in a matching spherical cap (5) in the drive part (15) and the spherical head (3) is passed through by at least one direction axle, about which the spherical head (3) is rotatable in the spherical cap (5) in the case of an axial offset of the drive part and the driven part (15). In this case, the ends (8, 9) of the directional axle that emerge from the spherical head (3) are each mounted in a groove (13, 14) which extends in the spherical cap (5) and extends transversely to the direction of rotation of the driven spherical cap (5) substantially in the direction of the drive part (2) such that, in the case of an offset of the drive part (2) with respect to the driven part (15), the ends (8, 9) move in the grooves (13, 14) in the driven part (15).
The invention relates to a device and a method for producing pellets from a melt, comprising a pelletizing die (1) with melt nozzles (2) arranged therein, from which the melt emerges, wherein opposite the pelletizing die (1) there is a cutting arrangement with a knife head having at least one knife (4a, 4b, 4c, 4d), and a rotor (5), driven by a motor (6), such that the at least one knife (4a, 4b, 4c, 4d) passes over the melt nozzles (2) in the pelletizing die (1) in an encircling manner, and thereby cuts off pellets from the melt material emerging there, wherein the device has a process chamber housing (7), which adjoins the pelletizing die (1) and surrounds at least part of the cutting arrangement and through which a cooling medium flows, and wherein the rotor (5) can be moved at least axially towards the process chamber housing (7) by means of at least one adjusting bearing (8), and a position sensing and adjusting device is provided, comprising at least one position sensor (9), arranged in the process chamber housing (7) and/or in the pelletizing die (1), and at least one position sensor pulse generator (10a, 10b, 10c, 10d) is provided, arranged in the region of the knife head, by means of which the position of the at least one knife (4a, 4b, 4c, 4d) in relation to the pelletizing die (1) with the melt nozzles (2) located therein can be determined, and comprising an actuator device (11), by which the position of the at least one knife (4a, 4b, 4c, 4d) can be correspondingly set.
The invention relates to an apparatus for producing granule particles, having a die plate with openings from which a melt is extruded, a process chamber (1) into which the melt is extruded, a separation apparatus for separating strands of the melt extruded from the die plate into individual granule particles, wherein the process chamber (1) has an inlet (2) for filling with a process fluid and an outlet (3) for the process fluid and the granule particles located therein, and a conveying device, by means of which the process fluid is fed into the process chamber (1) via the inlet (2) and the process fluid with the granule particles present therein is led away from the process chamber (1) via the outlet (3), wherein the inlet (2) is arranged at a level in the bottom half of the process chamber (1) and has an inlet opening (2a) in the process chamber (1) and an inlet duct (2b) arranged so as to lead to the process chamber (1), wherein a three-way valve (4) is provided between the inlet duct (2b) and a process fluid supply line (5) and also a process fluid drain line (6) leading downwards from the three-way valve (4) and is arranged further below the level of the inlet (2), and wherein the outlet (3) is arranged in the top half of the process chamber (1) and has an outlet opening (3a) in the process chamber (1) and an outlet duct (3b) arranged so as to lead away from the process chamber (1), and wherein a pneumatic device can be connected to the process chamber (1) via a valve (7) on the outlet duct (3b) such that, in order to remove the process fluid from the process chamber (1), the process chamber (1) can be filled with compressed air from the pneumatic device, such that the process fluid can be expelled from the process chamber (1) via the inlet opening (2a) and the inlet duct (2b) and also the three-way valve (4) and the process fluid drain line (6).
The invention relates to a cutting device for a granulator for obtaining granules from cutting plastic strands which are discharged from nozzles, said cutting device comprising a cutting rotor which is connected to the drive shaft by means of a Cardan joint piece comprising a driven part and a drive part. Said drive part and the driven part comprise a force transfer piece, respectively having a prong like shape such that the prongs rotate about the force transfer piece when they are pivoted at about 90 degrees in relation to each other. Each prong supports the axis which extends through the force transfer piece and both axes are offset in relation to each other essentially about 90 degrees.
The invention relates to a method for producing granules from polyethylene terephthalate by generating a melt of polyethylene terephthalate material, generating granules from the melt by means of underwater granulation in a process fluid, conducting the granules away from the site of the underwater granulation in the process fluid, crystallizing the granules in the process fluid, discharging the granules in the process fluid, and separating the granules from the process fluid, wherein only the surface of the granules is crystallized in the crystallization step such that the inside of the granules remains amorphous, wherein the temperature of the process fluid is set to a value at which, depending on the formulation of the polyethylene terephthalate material, the previously experimentally determined maximum crystallization rate of the polyethylene terephthalate material of the granules is achieved, and wherein after the crystallization step, the turbidity of the surface of the granules is determined as a measure of the achieved crystallization degree and of the achieved crystallization depth on the surface of the granules.
The invention relates to a device for continuous casting of strands (1) made of thermoplastic plastic, which strands emerge from a nozzle head (2) from at least one straight row of nozzles (3) for further processing in a granulator. At least one hole arrangement (6, 7) parallel and adjacent to a series of nozzles (3) is provided, which is directed toward the row of strands (1) emerging from the nozzles (3) and is coated by a pressure fluid, which flows around the row of emerged strands as a fluid curtain.
The invention relates to a granulating device for producing granules from a plastic material, comprising a die plate (1), a cutting chamber housing (2) adjoining the die plate (1), a cutting unit (3) comprising at least one blade (4), driven via a blade driving shaft (5) by a blade drive unit (6), arranged in a blade drive housing (7), wherein the cutting chamber housing (2) comprises a cutting chamber housing flange section (2a) and the blade drive housing (7) comprises a blade drive housing flange section (7a) and the housings can be connected to each other there via a connecting element. The connecting element comprises a clamping collar (10, 11, 12), which is arranged such that it encloses at least one section of the flange sections (2a, 7a), and an eccentric closure element (9), wherein the eccentric closure element (9) is connected to the respective ends of the clamping collar (10, 11, 12), and wherein the eccentric closure element (9) comprises at least one index opening (8) that in a closed position is aligned with a locating cam (13), which passes through the index opening (8) there.
One or more embodiments of a device for avoiding the uncontrolled discharge of melt from nozzle apertures of a nozzle plate are provided. The device can include a locking member that is movable in front of the nozzle plate. The locking member can be formed as an extrudate collection member. The locking member can be reciprocable between a production position and a collection position. And melt can be discharged from the nozzle apertures of the nozzle plate in the form of extrudates into a process chamber when the locking member is in the production position and into extrudate collection member when the locking member is in the collection position. The device can also include a melt extraction aperture disposed on the extrudate collection member. The melt extraction aperture can be configured to align with the nozzle apertures in the nozzle plate and a melt extraction channel.
The invention relates to a device for granulating melts exiting dies (1) in a perforated plate (2), wherein the perforated plate (2) is disposed opposite of a blade assembly comprising at least one blade (3), driven by a motor, such that the at least one blade (3) passes over the dies (1) in the perforated plate (2) and thereby severs granules of the exiting melt material, wherein the device comprises a housing (6), which adjoins the perforated plate (2) and surrounds the at least one blade (3) of the blade assembly and through which a coolant flows, and wherein an inlet (7) for the coolant and an outlet (8) for the coolant and the granules present therein are provided, wherein the inlet (7) is only arranged in the lower half of the housing (6) and comprises an inlet opening (7a) in the housing (6) and an inlet channel (7b) leading to the housing (6). The outlet (8) is arranged in the upper half of the housing (6) and comprises an outlet opening (8a) in the housing (6) and an outlet channel (8b) tangentially leading away from the housing (6), wherein the outlet channel (8b) runs across a length of at least double the largest inside diameter of the cross-section of the housing (6) in a rectilinear or substantially rectilinear manner.
The invention relates to a device for reducing pressure in a fluid having granules contained therein, comprising a housing (1) with an inlet (2) and an outlet (3), wherein in the housing (1) an impeller (4) is provided, which is caused to rotate by a motor (13) via a shaft (12), so that the pressure of the fluid with the granules contained therein reduces after flowing through the device and the fluid with the granules contained therein has a rotary motion imparted to it in the region of the outlet (3). A fluid-granule separating device is additionally provided in the region of the outlet (3), having a screen (5) that is arranged so that the fluid, due to the rotary motion existing therein, flows through screen openings (6) in the screen (5) and the screen (5) retains the granules and thus at least partially separates the latter from the fluid.
The invention relates to cutter head holder for cutters (1) of an underwater granulator for granulating granules from a plastic material melt that is discharged from a perforated plate (2) in a process chamber (3) in the housing of the underwater granulator. The holder comprises a cutter shaft, which can be coupled to a motor shaft (4) of a motor (5) of the underwater granulator, wherein the cutter shaft comprises an inner cutter shaft part (6) and an outer cutter shaft part (7) surrounding the inner cutter shaft part (6) at least in sections. The inner cutter shaft part (6) and the outer cutter shaft part (7) can be displaced axially towards one another but are not rotatable relative to one another. The outer cutter shaft part (7) faces towards the inner cutter shaft part (6) in a front region facing the perforated plate (2) of the underwater granulator, is mounted so as to be axially slidable over a front support (8) and the outer cutter shaft part (7) is rotatably mounted against the housing of the underwater granulator via at least one intermediate rotatable bearing (9).
A drop pelletizing device and method for producing pellets from a low-viscosity plastic melt are provided. The drop pelletizing device can include a die plate with holes, in which the plastic melt can be subjected to a harmonic pressure oscillation such that the plastic melt emerging from the holes forms individual pellet droplets, a pressure vessel, in which prevails an overpressure above the ambient pressure, a discharge device adapted to discharge the individual pellet droplets from the pressure vessel and to reduce the overpressure, a separator adapted to separate the individual pellet droplets from the coolant; and at least one circulating device adapted to agitate the coolant to separated and unclump the individual pellet droplets in the coolant and for producing turbulence within the coolant.
b) composed of hard material running parallel to the counter blade is disposed adjacent to the counter blade and after said counter blade in the rotational direction of the cutting wheel that collects cut granulate and conducts said granulate into a discharge channel. The rail is held in a guide having an undercut (8, 9) in the blade carrier on both sides, wherein the undercut (9) facing the counter blade forms a separating strip (10), the thickness of which reduces outward in a blade-like fashion such that, along with the other undercut (8), the rail assumes an oblique position relative to the counter blade in the transverse direction, wherein the outer edge (11) of the undercut (9) facing the counter blade is in close proximity to the opposite front edge (12) of the counter blade and the other front edge of the rail protrudes in the direction of the cutting wheel.
The invention relates to a device for the implementation of a method for the production of pellets of polyamide 6 or copolyamides. The method can include production of a melt of polyamide 6 or copolyamides by means of polymerization, production of pellets from the melt by means of underwater pelletization into a process fluid, removal of the pellets from a site of underwater pelletization in the process fluid, supply of the pellets in the process fluid to an extraction stage, extraction of low-molecular components as extract, and drying of the pellets after extraction, wherein the underwater pelletization stage and the extraction stage take place using the same process fluid.
The invention relates to a method for granulating plastic having a high softening temperature, particularly over 120°C, on a perforated plate for generating strands of fluid plastic and a subsequent process chamber containing a process fluid and having a fragmentation device from which a mixture of process fluid and granulate is extracted while cooling the granulate in a cooling section. The process chamber is filled with a process fluid, particularly water, at a temperature of >120°C and a pressure of >2 bar, and the mixture of process fluid and granulate is fed into a separating device while maintaining the pressure while transiting the cooling section, and the granulate is separated from the process fluid and discharged after being fed through a pressure gate for dropping to the ambient pressure.
The invention relates to a device for continuous casting and granulation of strands from thermoplastic, comprising a nozzle head with a plurality of nozzle openings with a maximum diameter of 4 mm and a water-wetted control device for cooling and guiding the plastic strands after the nozzle opening via infeed rollers to the entrance of the cutting unit for milling the plastic strands into granulate of approx. 2 - 3 mm in length. The flow speed of the melt, under cooling of the strands from the nozzles via the control device to the infeed rollers of the cutting unit, of at least 100m/min in the spatially central region of the nozzle openings is raised so that the cutting unit cuts the strands at a cutting frequency of > 2000 cuts/s.
The invention relates to an apparatus for drying granules (16) of a process fluid (17), comprising at least one screen device (1) that has a screen area (2) with screen openings, and an oscillating device (3) which causes at least the screen area (2) of the screen device (1) to oscillate in such a way that the granules (16) move relative to the screen openings, the process fluid (17) flowing off through the screen openings. According to the invention, the cross-sectional areas of the screen openings are smaller than the cross-sectional areas of the smallest granules (16), and the screen area (2) of the screen device (1) has a first drying zone (2a) and a second drying zone (2b). The process fluid (17) flows off through the screen openings in the first drying zone (2a), and the still moist granules (16) are subjected to a stream of a drying fluid in the second drying zone (2b). Furthermore, the oscillating device (3) is arranged and operated such that the granules move from the first drying zone (2a) to the second drying zone (2b) under the influence of the oscillations.
F26B 17/26 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by reciprocating or oscillating conveyors propelling materials over stationary surfacesMachines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by reciprocating or oscillating shelves, sieves or trays
78.
COMMINUTION DEVICE FOR THE PRODUCTION OF PARTICLES FROM A STRIP-SHAPED MATERIAL
The invention relates to a comminution device for the production of particles (16) from a strip-shaped material (17), said device comprising a longitudinal cutting device (1) having a first cutting roller (2) and having a second cutting roller (3), and a transverse cutting device (4), which is disposed downstream from the longitudinal cutting device (1), wherein the first cutting roller (2) and the second cutting roller (3) each have special profiles according to the invention.
B02C 18/14 - Disintegrating by knives or other cutting or tearing members which chop material into fragmentsMincing machines or similar apparatus using worms or the like with rotating knives within horizontal containers
B26D 1/24 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
79.
DRIPPING DEVICE AND METHOD FOR THE OPERATION THEREOF
The invention relates to a dripping device for producing granules (9) from a low-viscosity plastic melt, comprising a molding nozzle (3) with boreholes, in which the plastic melt can be supplied with harmonious pressure vibration such that the plastic melt exiting there from the boreholes forms granule drops (8), a pressurized container (1) in which excess pressure prevails over ambient pressure, with a drop section (f) in a gas space (4) and a cooling section (k) comprising a coolant (5), into which the granule drops are immersed, an output device (10), and a separator (11), wherein the excess pressure in the pressurized container can be set at least as high as the steam pressure of the volatile substances present in the plastic melt, the length of the drop section (f) in the gas space can be set, a collecting device (6) is provided after the drop section (f), and at least one circulation device (7) is provided for the coolant, wherein turbulence in the coolant can be generated by the circulation device. The invention also relates to a corresponding dripping method.
B29B 9/10 - Making granules by moulding the material, i.e. treating it in the molten state
B01J 2/04 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
The invention relates to a method for producing granules made of polyamide (6) or copolyamides, by - creating a melt of polyamide (6) or copolyamides by means of polymerization, - creating granules from the melt by means of underwater granulation in a process fluid, - removing the granules from the location of underwater granulation in the process fluid, and - feeding the granules in the process fluid to an extraction, - extracting components of low molecular weight as extracts, - drying the granules after extraction, wherein the underwater granulation and the extraction are carried out using the same process fluid, and to a device for carrying out such a method.
The invention relates to a device for pelletizing at least one strand of material to be pelletized. Said device comprises a cutting device with two blades (5, 6) that can be displaced relative each other, at least one feed roller (3, 4) and at least one strand feeder (2, 2) for feeding the strand (1, 1) to the cutting device. An additional tab-shaped rectification guide (7, 7) is arranged downstream of the strand feeder (2, 2) in the region directly in front of the feed roller and next to the same, said guide being adjustable and movable in relation to the strand feeder. The rectification guide can be used to adjust the angle at which the strand is fed to the feed roller.
The invention relates to a device for producing pellets from plastic material or from material to be pelletized. Said device comprises a continuous casting device (1) from which at least one strand (2) of the material to be pelletized is issued, and a belt conveyor (3) comprising at least one conveying belt (4) on which the strand (2) can be fed to a pelletizer (5), said pelletizer breaking the strand up into pellets (6). The invention is characterized in that the belt conveyor (3) has a switchable direction of conveyance of the conveying belt (4), a direction of feed conveyance towards the pelletizer (5) and a direction of discharge conveyance away from the pelletizer (5). The invention also relates to a method for operating said device.
The invention relates to a device for granulating plastic strands having a cutting wheel (15), the individual blades of which graze past a counter blade (2) disposed in a blade carrier (1) when the cutting wheel is rotated, thus cutting the plastic strands (13) being guided over the counter blade into a granulate (14), wherein a rail (3a, 3b) composed of hard material running parallel to the counter blade is disposed adjacent to the counter blade and after said counter blade in the rotational direction of the cutting wheel that collects cut granulate and conducts said granulate into a discharge channel. The rail is held in a guide having an undercut (8, 9) in the blade carrier on both sides, wherein the undercut (9) facing the counter blade forms a separating strip (10), the thickness of which reduces outward in a blade-like fashion such that, along with the other undercut (8), the rail assumes an oblique position relative to the counter blade in the transverse direction, wherein the outer edge (11) of the undercut (9) facing the counter blade is in close proximity to the opposite front edge (12) of the counter blade and the other front edge of the rail protrudes in the direction of the cutting wheel.
The invention relates to a method and a device (01) for dehydrating and drying a mixture of plastic granules and water, said device comprising at least one mixture inlet (02) through which the mixture is supplied to the device (01), at least one water outlet (08) through which the separated water is removed from the device (01), and at least one granule outlet (13) through which the dried granules are removed from the device (01). Said device (01) comprises a dehydrating section (06) along which the mixture is dehydrated, and a drying section (12) along which the dehydrated granules are dried. The device (01) comprises at least one sensor (16) for directly or indirectly measuring at least one property parameter of the granules, especially the temperature and/or the residual humidity of the dried granules. The device (01) also comprises at least one adjusting device (17) for influencing the property parameter monitored by the sensor (16), especially the temperature and/or residual humidity of the dried granules, according to the measuring values of the sensor (16).
The invention relates to a method and an apparatus for producing plastic granulate, comprising a granulator which cuts a plastic material flow that is conveyed in a substantially continuous fashion into granulate particles. The granulator (17, 40) encompasses a cutting device (21, 22; 32, 33, 34), the cutting elements of which engage into the plastic material flow when the plastic is cut. The apparatus (1, 31) further comprises at least one vibration sensor (24, 25; 60, 61) which allows vibrations to be detected that occur on the apparatus (1, 31), especially on the granulator (17, 40).
The invention relates to a method for granulating and crystallizing thermoplastic polymers, the granules being contained in a liquid after granulation of a polymer melt and the granules being nucleated in the liquid once the pressure of the liquid is increased and the temperature of the liquid is increased, and the granules being crystallized in the liquid once the pressure of the liquid is again increased and the temperature of the liquid is again increased. According to the invention, the granules are removed from the liquid once the pressure and the temperature of the liquid containing the granules have been reduced.
The invention relates to a device for the production of granulate grains from a plastic melt, having a nozzle plate with at least one nozzle opening from which a strand of the plastic melt is discharged into a processing chamber, and a cutting tool having at least one cutting blade that may be moved against the nozzle plate by means of a feed device, wherein the plastic strand discharged from the nozzle opening of the nozzle plate can be fragmented into granulate grains by the cutting blade moving relative to the nozzle opening. The nozzle plate has a diamond coating at least on the surface thereof facing the cutting tool, with the hardness of the diamond coating being greater than the hardness of the cutting blade, and with the average roughness of the diamond coating being greater than the average roughness of the cutting blade by at least a factor of two.
01 - Chemical and biological materials for industrial, scientific and agricultural use
07 - Machines and machine tools
Goods & Services
Crystalline pellets made of PET. Machines for processing of synthetic material, pelletizing
machines, machines for the production of synthetic pellets;
pelletizing apparatus (machines) and crystallization
apparatus (machines) for synthetic materials and
combinations thereof; power-operated hot melt pelletizing
machines.
