The invention relates to a welding device (1) for producing tubular bodies by the edge-side welding of two substrate edges (2, 3), in particular two laminate edges, said welding device having a continuous, circulating first contact belt (5) for coming into contact with the substrate (4), and an energy source (12, 13) for providing welding energy. According to the invention, the first contact belt (5) has a seamless polyimide contact surface (35) for coming into contact with the substrate (4).
B29C 65/00 - Joining of preformed partsApparatus therefor
B29C 65/36 - Joining of preformed partsApparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
B29C 53/48 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
B29D 23/20 - Flexible squeeze tubes, e.g. for cosmetics
B29L 23/20 - Flexible squeeze tubes, e.g. for cosmetics
B29K 105/00 - Condition, form or state of moulded material
The invention relates to a welding device (1) for producing tubular bodies by the edge-side welding of two substrate edges (2, 3), in particular two laminate edges, said welding device having a continuous, circulating first contact belt (5) for coming into contact with the substrate (4), and an energy source (12, 13) for providing welding energy. According to the invention, the first contact belt (5) has a seamless polyimide contact surface (35) for coming into contact with the substrate (4).
B29C 53/48 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
B29C 65/36 - Joining of preformed partsApparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
A device for manufacturing circumferentially closed tubular tube bodies, comprising conveying means for conveying the substrate in a conveying direction, and also comprising tube-forming means which are designed to form a web-like substrate, which has a first and a second longitudinal edge, into a tubular form in which, in the circumferential direction, the first and the second longitudinal edge form or delimit a contact region, in particular abutting or overlapping region, which extends in the conveying direction, wherein the tube-forming means effect the shaping of the substrate into the tubular form in a shaping region and comprise welding means for welding the tubular form at a weld circumferential position, first sensor means, which are upstream of the shaping region; in the conveying direction, for detecting the position of the substrate web, setting means for setting the position of the substrate web transversely with respect to the conveying direction, and first control means which are designed to actuate the setting means, taking into consideration the measurement values from the first sensor means, such that the web-like substrate is held in a setpoint position transversely with respect to the conveying direction or such that the web-like substrate is adjusted in the direction of the setpoint position.
The invention relates to a tube transfer system for conveying tubes in a tube production process from a tube production station (2) to a downstream station (5), comprising a plurality of transport elements, which can be moved one behind the other along a preferably closed guide path (7) and which each have retaining means (11) for retaining a tube (1). Driving means connected to control means in a signal-conducting manner are associated with each transport element (3). Said driving means can be individually controlled by the control means in such a way that the transport elements can be moved along the guide path (7) at adjustable and variable speeds that are independent from each other. According to the invention, the driving means of the transport elements can be controlled by the control means in such a way that the transport elements pick up tubes from the tube production station (2) in series, transport the tubes to the station (5), which is arranged downstream at a distance from the tube production station (2) along the guide path (7), and are grouped there or before reaching the station (5) in order to be able to transfer a number of tubes from a plurality of transport elements to the downstream station (5) simultaneously.
B65G 47/08 - Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding
B65G 47/86 - Star-shaped wheels or devices having endless travelling belts or chains, the wheels or devices being equipped with article-engaging elements the article-engaging elements being grippers
5.
Device and method for producing tubes for packaging tubes
A device for producing tubes for packaging tubes, comprising an elongated mandrel (3), around which a substrate web can be formed in order to produce a tubular form (4) that surrounds the mandrel (3) and can be conveyed along the mandrel (3) in a conveying direction (R), as well as welding means (9) for welding the substrate web along a welding region in order to produce a welding seam (11) and at least one first welding belt (34) that can be conveyed together with the tubular form (4) and fixes the tubular form in a contact region of the substrate web with itself by clamping the substrate web between the first welding belt (34) and a clamping partner, wherein means (13) are provided for expanding the tubular form (4) fixed by the first welding belt (34) and the clamping partner by plastically elongating the substrate web in the circumferential direction, wherein said means can be adjusted into a position, in which they radially protrude over the outer surface (14) of the mandrel section (31) of the mandrel (3) that is arranged upstream of the means (13) referred to the conveying direction (R).
B29C 53/42 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles using internal forming surfaces, e.g. mandrels
B29C 53/50 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
A device for severing an endless tube made from a flexible material, the endless tube being conveyed in a transport direction, in order to obtain tube bodies for packaging tubes, comprises a guide element (110) for the endless tube, the guide element (110) having a substantially cylindrical inner surface (140) for guiding the outer surface of the endless tube. The device further comprises a cutting element (150) for cutting the endless tube along a substantially azimuthal cutting line, the cutting element (150) being arranged adjacent to the guide element (110) in the transport direction. At least in a region neighbouring the cutting element (150), the inner surface of the guide element comprises a plurality of gas delivery orifices (126). Using the gas delivery orifices (126) a gas cushion may be created between the inner surface (140) of the guide element (110) and the outer surface of the endless tube, thereby avoiding physical contact between these two surfaces and therefore reducing or eliminating abrasion of the tube material. Therefore, a high throughput is achievable and the tube bodies have a smooth outer surface and are free from contamination.
The invention relates to a device for manufacturing circumferentially closed tubular tube bodies, comprising conveying means for conveying the substrate (10) in a conveying direction, and also comprising tube-forming means (12) which are designed to form a web-like substrate (10), which has a first and a second longitudinal edge (18, 19), into a tubular form (13) in which, in the circumferential direction, the first and the second longitudinal edge (18, 19) form or delimit a contact region (20), in particular abutting or overlapping region, which extends in the conveying direction, wherein the tube-forming means effect the shaping of the substrate (10) into the tubular form (13) in a shaping region (21) and comprise welding means (22) for welding the tubular form (13) at a weld circumferential position, first sensor means (27), which are upstream of the shaping region (21) in the conveying direction, for detecting the position of the substrate web (10), setting means (26) for setting the position of the substrate web transversely with respect to the conveying direction, and first control means (31) which are designed to actuate the setting means (26), taking into consideration the measurement values from the first sensor means (27), such that the web-like substrate (10) is held in a setpoint position transversely with respect to the conveying direction or such that the web-like substrate (10) is adjusted in the direction of the setpoint position.
The invention relates to a method for producing tubular bodies (1) which have an inner circumferential surface (8) and an outer circumferential surface (7) for packaging tubes, consisting of a strip-shaped film substrate (2) which has at least one weldable plastic layer (3) or consists of said plastic layer and which comprises a first edge face (5) that extends in the longitudinal direction of the film substrate (2) and a second edge face (6) that is spaced from the first edge face (5) by the width of the film substrate (2). The first edge face (5) runs at a first angle (α) with respect to a first thickness extension direction at a first radially innermost border (9) of the first edge face (5), and the second edge face (6) runs at a second angle (β) with respect to a second thickness extension direction at a second radially outermost border of the second edge face (6). The first and second edge faces (6) are arranged opposite each other and are connected under the effect of heat. According to the invention, the first angle (α) and the second angle (β) are different sizes such that the first angle (α) is selected so as to be smaller than the second angle (β) by an angular difference between 3° and 70°, and the edge faces (5, 6) are arranged such that a longitudinal gap (11) that opens outwards is delimited by the first and second edge faces (5, 6).
The invention relates to a method for producing tubular bodies (1) which have an inner circumferential surface (8) and an outer circumferential surface (7) for packaging tubes, consisting of a strip-shaped film substrate (2) which has at least one weldable plastic layer (3) or consists of said plastic layer and which comprises a first edge face (5) that extends in the longitudinal direction of the film substrate (2) and a second edge face (6) that is spaced from the first edge face (5) by the width of the film substrate (2). The first edge face (5) runs at a first angle (α) between 1° and 80° with respect to a first thickness extension direction (D1) at a first radially innermost border (9) of the first edge face (5), and the second edge face (6) runs at a second angle (β) between 1° and 80° with respect to a second thickness extension direction (D2) at a second radially outermost border (10) of the second edge face (6). The film substrate (2) is shaped into a tube shape such that a first film substrate (2) inner circumferential surface edge section (11) that adjoins the first edge face (5) at the first radially innermost border (9) rests against a second film substrate (2) outer circumferential surface edge section (12) that adjoins the second edge face (6) at the second radially outermost border (10). The film substrate (2) is then welded to itself. According to the invention, the first and the second angle (α, β) are different sizes.
The invention relates to a method for producing tubular bodies (1) which have an inner circumferential surface and an outer circumferential surface (8) for packaging tubes, consisting of a strip-shaped film substrate (2) which has a barrier layer (19), in particular against moisture and/or oxygen, which has at least one weldable plastic layer (3), and which comprises a beveled first edge face (5) that extends in the longitudinal direction of the film substrate (2) and a beveled second edge face (6) that is spaced from the first edge face (5) by the width of the film substrate (2). The first edge face (5) and the second edge face (6) are arranged opposite each other, thereby forming a tube shape, and are welded together under the effect of heat. According to the invention, the first and the second edge faces (5, 6) are pressed against each other during the welding process such that the barrier layer (19) is compressed, thereby forming a wave shape.
B29C 65/02 - Joining of preformed partsApparatus therefor by heating, with or without pressure
B29C 53/38 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
The invention relates to a device for producing tubular structures for packaging tubes, comprising an elongate mandrel (3) extending axially, around which a substrate web can be subjected to a forming process to produce a tubular moulding (4), where, within the mandrel (3), there are a plurality of gas-outlet apertures (15) to which compressed gas can be applied to produce a gas cushion, in particular an air cushion, between the mandrel (3) and the tubular moulding (4), and where there are welding means for welding the tubular moulding, and where, with the aid of means (19) arranged radially adjacent to the mandrel (3) and capable of providing a combination of pressure-application and conveying, the tubular moulding (4) can be forced radially inwards in a direction towards a mandrel surface (16) which belongs to the mandrel (3) and which is convexly curved in a circumferential direction, and the tubular moulding (4) can be transported in a direction of the longitudinal direction of the mandrel (3) by virtue of a frictional effect between the means and the tubular moulding (4). The invention provides that the curved mandrel surface, at least sectionally, has been formed by the microporous and/or nanoporous material which has the gas-outlet apertures in the form of pores.
B29D 23/20 - Flexible squeeze tubes, e.g. for cosmetics
B29C 53/50 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
B31B 1/64 - Uniting opposed surfaces or edges; Taping by applying heat or pressure
B65B 51/18 - Applying or generating heat or pressure or combinations thereof by endless bands or chains
12.
DEVICE AND PROCESS FOR PRODUCING TUBULAR STRUCTURES
The invention relates to a device (1) for producing tubular structures for packaging tubes made of a substrate web (4), comprising an elongate mandrel (2) extending axially, around which the substrate web (4) can be subjected to a forming process to produce a tubular moulding (5), and with means (6) of welding for welding the substrate web (4), and also with at least one welding strip (10, 11) which can be driven circumferentially along a surface (12, 13). The invention provides that, in the surface (12, 13), there are gas outlet apertures (18) through which gas can emerge to produce a gas cushion (14, 15) between the surface (12) and the welding strip (10, 11) allocated thereto. The invention further relates to a process for operating a device (1) for producing tubular structures made of a substrate web (4).
B29C 53/50 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
B31B 1/64 - Uniting opposed surfaces or edges; Taping by applying heat or pressure
B29C 65/18 - Joining of preformed partsApparatus therefor by heating, with or without pressure using heated tool
B29D 23/20 - Flexible squeeze tubes, e.g. for cosmetics
B65B 51/18 - Applying or generating heat or pressure or combinations thereof by endless bands or chains
The invention relates to a device for producing tubular structures for packaging tubes, comprising an elongate mandrel (3) extending axially, around which a substrate web can be subjected to a forming process to produce a tubular moulding (4), where, in the mandrel (3), which has a mandrel surface (16), there are a plurality of gas-discharge apertures (15) to which compressed gas can be applied and which are intended to produce a gas-air cushion, in particular an air cushion, between the mandrel (3) and the tubular moulding (4), and where means (9) of welding have been provided for welding the tubular moulding (4). There are also means (14) of temperature control for defined heating and/or cooling of the compressed gas, in particular of the compressed air.
B29D 23/20 - Flexible squeeze tubes, e.g. for cosmetics
B29C 53/50 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
B31B 1/64 - Uniting opposed surfaces or edges; Taping by applying heat or pressure
B65B 51/18 - Applying or generating heat or pressure or combinations thereof by endless bands or chains
14.
DEVICE AND METHOD FOR PRODUCING TUBES FOR PACKAGING TUBES
The invention relates to a device for producing tubes for packaging tubes, comprising an elongated mandrel (3), around which a substrate web can be shaped in order to produce a tubular form (4), which surrounds the mandrel (3) and can be conveyed along the mandrel (3) in a conveying direction (R), welding means (9) for welding the substrate web along a welding region in order to form a weld (11), and at least one first welding strip (34), which can be conveyed together with the tubular form (4) and which secures the tubular form in a contact region of the substrate web where said web overlaps by clamping the substrate web between the first welding strip (34) and a clamping partner, in particular a second welding strip (35). Furthermore, means (13) are provided for expanding the tubular form (4), which is secured by the first welding strip (34) and the clamping partner, by plastically elongating the substrate web in the circumferential direction.
B29C 53/50 - Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
The invention relates to a transfer apparatus (1) with a clocked, rotatably drivable carousel (3) comprising a plurality of workpiece carriers arranged next to one another in the circumferential direction, with a transport apparatus (6) which is arranged adjacent to the carousel (3) and comprises a transport element (7) in the form of a band, belt, cable or chain, and with a manipulation unit (5) for removing workpieces (21) from the carousel (3), transferring the workpieces (21) to the transport element (7) and discharging the workpieces (21) on the transport element (7). According to the invention, the transport element (7) is driven at an at least approximately constant speed during the removal, the transfer and the discharging of the workpieces (21) by means of the manipulation unit (5). Furthermore, the invention relates to a printing apparatus (2) and to a method for operating a transfer apparatus (1).
B41F 17/00 - Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
B65G 47/84 - Star-shaped wheels or devices having endless travelling belts or chains, the wheels or devices being equipped with article-engaging elements
patents
