A combing head for a combing machine for processing a web comprises a nipper (4), a pair of detaching rollers (20a', 20b') and a pair of auxiliary rollers (20a, 20b). The combing head comprises control means programmed or programmable to control the peripheral detaching roller speed (Vd') of the detaching rollers (20a', 20b') and the auxiliary peripheral speed (Vd) of the auxiliary rollers (20a, 20b), so that the detaching rollers (20a', 20b') nip a head end of the web length (W) with peripheral detaching roller speed (Vd') substantially equal to the maximum peripheral detaching roller speed (Vdmax').
D01G 19/20 - Dispositifs à cylindre ou à cylindre et manchon, p. ex. extrayant les fibres d'une manière continue extrayant les fibres par intermittence
2.
A MODULAR ROVING FRAME FOR A SPINNING LINE WITH AT LEAST ONE SPINNING FRAME
The modular roving frame (100) for a spinning line with at least one spinning line according to the present invention comprises at least two production units (1), each provided with a production area (16) and a doffer (122) adapted to pick the bobbins (10) from said production area (16), replacing them with empty tubes (17), and a connection unit (2) with at least one exchanger (22) adapted to exchange the bobbins (10) with empty and/or dirty tubes (17). In particular, the doffer of the first production unit is connected to the doffer of the second production unit at the connection unit (2). Advantageously such solution makes it possible to obtain a simplified bobbin and tube transport system that is common to two distinct production units. Productivity is therefore notably increased insofar as there are no waiting times for trains which are always moving between the production units.
D01H 9/04 - Dispositifs de levée faisant partie intégrante des machines de filature ou de retordage
D01H 9/18 - Dispositifs pour le remplacement ou l'enlèvement des bobines, tubes, réceptacles ou bobines pleines, aux postes délivreurs ou de réception pour l'alimentation en bobines, noyaux-supports, réceptacles ou bobines pleines vers ou pour le transport en provenance des postes délivreurs ou de réception
B65H 67/06 - Approvisionnement en noyaux, récipients ou paquets et transport depuis les postes d'enroulage ou d'emmagasinage
The object of the present invention is a method of forming reels on a roving frame (1) for processing a fiber web and forming a roving wound on reels. The roving frame is provided with a drawing device (10) of the fiber web for forming the roving and a flap-spindle unit for winding said roving into reels. The method provides applying, to the fibers exiting the drawing device (10) and entering the flap-spindle unit an initial torsion (Ti) at the start of reel forming and a final torsion (Tf) at the end of reel forming. The method is characterized in that it passes from the initial torsion (Ti) to the final torsion (Tf) while providing at least one step of increasing the torsion. Advantageously such method makes it possible to reduce thread breakages during the step of winding the reel without compromising the roving frame production velocity.
A method for enriching a textile fiber bundle (2) intended for a weaving machine (3) comprises the operating steps of: a) moving a textile fiber bundle (2), e. g., a sliver or a roving or a thread, along a bundle running direction (X); b) providing a first electrospinning station (1), suitable for producing solid nanofibers (25) by an electrospinning device (120); c) by means of said first electrospinning station (1), depositing solid fibers (25) on said textile fiber bundle (2) to obtain an enriched textile fiber bundle (21) on a first side (22); d) moving the enriched textile fiber bundle (21) towards a work station (31) downstream of the first electrospinning station (1). An electrospinning station (1) for enriching a textile fiber bundle (2) comprises an electrospinning device (120) having a reserve (11, 11') suitable for containing an electrospinnable enrichment solution (13), an emitter electrode (10, 10' ), and a collector electrode (12, 12'), facing and spaced apart from the emitter electrode (10, 10' ), so that, by the effect of a generated electric field, the formation and the transport of solid nanofibers (25) on the textile fiber bundle (2) take place. A yarn is composed of an enriched textile fiber bundle (21) comprising textile fibers enriched with solid nanofibers (25) obtained by electrospinning and interwoven with textile fibers.
A combing machine (1) of a spinning preparation line according to the present invention comprises at least two combing heads (2) having a gripper and a circular comb for combing a fiber web and at least one pair of breaker cylinders (20') suitable for forming a fiber web with edges. Innovatively, the combing head comprises orientation means (90, 91, 92, 96) for the fibers of the edges of said web. Advantageously, the fiber orientation means push and realign fibers that are not fully paralleled and that protrude from the fiber web inward and/or below said web. This solution results in a high-quality combed web, as it is free of misaligned fibers that may compromise subsequent drawing steps by creating knots and tangles.
The present invention relates to a method for producing a composite material in polymer matrix, comprising the following steps: a) dispersing a fibrous material derived from textile wastes in an aqueous emulsion of at least one thermoplastic polymer, so that the weight ratio between said thermoplastic polymer, water and said fibrous material is comprised between 1:0.4:1.1 and 1:7.5:1.5, wherein said fibrous material contains fibers up to 10.0 mm long; b) mixing the resulting emulsion inside which the fibrous material is dispersed, thus obtaining a composite material; c) at least partially evaporating the water contained in said composite material; d) optionally sub jecting the composite material obtained from said step c) to a thermomechanical process, preferably to a process of extrusion, thermopressing, thermoforming or molding, preferably injection molding.
C08J 3/21 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide le polymère étant prémélangé avec une phase liquide
C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères
B29B 17/00 - Récupération de matières plastiques ou d'autres constituants des déchets contenant des matières plastiques
A roving frame (1) comprises a machine body (2) having a collection plane (25) and a cleaning assembly (5) comprising a plurality of blower devices (51), each suitable for blowing an air current towards the collection plane (25) to convey web waste (9) deposited on the collection plane (25) towards a discharge region (29) of the machine body (2).
An apparatus for detecting defects in a drawn roving (R) being processed in a spinning machine comprises acquisition means (60), and processing means (70) for digitally processing acquired images (I) and detecting defects by means of a machine learning detection algorithm.
A measuring device (20) for a fiber processing line for spinning preparation comprising a scrap conduit (12), restoration means, collection means (30) and a measuring unit (50) suitable for measuring the weight of the scrap (Q), cooperating, in a measurement configuration of the measuring device, with the collection means (30) for receiving the collected scrap (Q).
A combing machine (1) for a spinning preparation line comprises a plurality of combing heads (2) and a drafting device (600) for each combing head, located downstream of the gripper and upstream of the deviation means, suitable for drafting the combed web.
A spindle tape drive spinning machine (1) comprises an apparatus for handling the spindles that is provided with a main shaft (30), a plurality of belts (34), each engaging with the spindles of its own spindle group (12A,12B)i), and a plurality of electric motors (50), wherein each motor (50) is operatively connected to a particular engagement portion (52) of the main shaft (30) in order to place the main shaft (30) in rotation.
An apparatus for a spinning line comprises a roving frame (1) provided with a plurality of modules (6a-6d) aligned and side by side, longitudinally spaced by a respective passageway (90). An operator may pass through at least one passageway (90) to go from the front zone (A) to the rear zone (P) of the apparatus, or vice versa.
A spinning machine (1) is equipped with a suction device for a broken roving. The suction device comprises a plurality of nozzles (301-30n), a plurality of shut-off valves (421-42k), a plurality of sensors (441-44m) and electronic control means (100). The control means (100) are configured to receive the breakage signal (Rj) coming from the breakage sensor (44j) and to emit the corresponding control signal (Ck) to bring into the open configuration the shut-off valve (42k) associated with the nozzle (301), in turn associated with the spindle (24) where the roving (S) has encountered a breakage.
D01H 11/00 - Dispositifs pour confiner ou enlever la poussière, le duvet ou analogues
D01H 13/16 - Dispositifs avertisseurs ou de sécurité, p. ex. de détection automatique des défauts, mouvements d'arrêt sensibles à une réduction de la tension, à un manque d'alimentation, à une cassure de la matière
D01H 5/68 - Retenue de l'extrémité du fil par aspiration
A roving frame (1) of a spinning line comprises a drafting device (10) with a third lower cylinder (103), a second lower cylinder (102) and a first lower cylinder (101). The third lower cylinder (103) and the second lower cylinder (102) are segmented, whereas the first lower cylinder (101) is continuous between the ends of the frame or segmented.
A carding machine for a spinning preparation line comprises a rotating main drum (1), a travelling flat device (6) having a plurality of travelling flats (8) translating and cooperating with the main drum (1) along a working stretch of a closed path, and an auxiliary cleaning device (39). The auxiliary cleaning device (39) comprises an auxiliary cleaning unit (40) operating on at least one travelling flat (8) and comprising an auxiliary brush (42) movable between an operating configuration, in which it engages a clothing (22) of the at least one travelling flat (8), and a non-operating configuration, in which it does not engage said clothing (22).
1n1n1n1niuu) and the outfeed direction (Z) form an outfeed angle (B). The infeed angle (A) is greater than the outfeed angle (B) to limit the action of the tension of the belt on the infeed diversion means (32).
In a spinning line, a traveling cleaner device (80) is coupled to a roving frame (1) provided with a plurality of nozzles (72) for suction from the rail plane (21). During the movement of the cleaner device along the rail, the suction flow from the nozzles is increased or reduced according to the position of the cleaner device, to optimize its action and reduce energy consumption.
A combing machine is able to perform a working method which involves detaching a tuft (S') of web through a pair of detaching rollers (20a', 20b') in continuous rotation, transferring the tuft (S') to auxiliary rollers (20a, 20b), sending the tuft (S') through the auxiliary rollers (20a, 20b) to a main roller (30) having a peripheral speed lower than that of the auxiliary rollers, causing the tuft (S') to impact against the main roller (30) and make it pull thereby, detaching a further tuft (S''), sending said further tuft (S'') towards the main roller (30) so that a head section (Hs'') of the further tuft (S'') crosses a tail section (Ts') of the tuft (S'), forming a continuous combed web (W), making the combed web (W) emerge from an outlet passage (32; 112) and transferring the combed web (W) to a transfer device (40) so that, on the transfer device (40), the head section (Hs'') of the further tuft (S'') is crossed and placed under the tail section (Ts') of the tuft (S').
A comber (1) comprises a nipper (4) with a predefined working speed (Vp) and a first pair (20) of detaching cylinders, having a continuous rotary motion with an angular rotation speed (Wc). Management means (100) are provided to regulate the rotation speed (Wc) as a function of the working speed (Vp) of the nipper (4), so that the rotation speed (Wc), as a function of the working speed (Vp), increases more than proportionally.
A roving frame (1) has a control head (80) comprising electric actuators (122) for the main electric motors (32, 46, 45, 44, 182, 184, 64, 66) contained in a main compartment (120) accessible from the rear of the head (80). The head further provides for secondary electrical components (152) contained in a secondary compartment (150) accessible from the front of the head (80). The roving frame is thus particularly compact and can have other frames juxtaposed longitudinally to it occupying a limited area.
A detection device (30) for a spinning station (1) of a ring spinning frame comprises emission means of a magnetic field (34), a magnetic field sensor (36) and a conveyor (38, 138) which achieves a concentration of the magnetic field (M) in a detection zone (Zr), so as to detect, via the sensor (36), a variation of the magnetic field due to the transit of the slider (28) in the detection zone (Zr). It is thus possible to detect the rotational characteristics of an at least partially ferromagnetic slider.
D01H 13/16 - Dispositifs avertisseurs ou de sécurité, p. ex. de détection automatique des défauts, mouvements d'arrêt sensibles à une réduction de la tension, à un manque d'alimentation, à une cassure de la matière
23.
INTEGRATED DEVICE AND METHOD FOR TRANSPORTING BOBBINS AND TUBES BETWEEN A ROVING FRAME AND A SPINNING FRAME OF A SPINNING LINE
An integrated device (50) performs the picking of dirty tubes (12) from a secondary transport device (26) of a spinning frame (8) and bobbins (10) from a main transport device (22) of a roving frame (6), the cleaning of the dirty tubes (12) to obtain empty tubes (14), the exchange of the bobbins (10) with the empty tubes (14) and the release of the bobbins (10) to the secondary transport device (26) and of the empty tubes (14) to the main transport device (22). The working method of the spinning line avoids that, between the picking of the dirty tube (12) and the release of the related empty tube (14), said dirty (12) or empty (14) tube is further released.
B65H 67/06 - Approvisionnement en noyaux, récipients ou paquets et transport depuis les postes d'enroulage ou d'emmagasinage
B65H 73/00 - Opération pour débarrasser les noyaux ou gabarits des déchets, p. ex. pour permettre leur réemploi
D01H 9/18 - Dispositifs pour le remplacement ou l'enlèvement des bobines, tubes, réceptacles ou bobines pleines, aux postes délivreurs ou de réception pour l'alimentation en bobines, noyaux-supports, réceptacles ou bobines pleines vers ou pour le transport en provenance des postes délivreurs ou de réception
24.
DEVICE FOR COMPACTING A YARN IN A SPINNING MACHINE
A device (20) for compacting a fibre yarn (W1) comprises a first pair of drawing cylinders (4a, 4b) and an auxiliary pair of cylinders comprising an auxiliary cylinder (14a) and a pressure cylinder (14b) in pressure contact therewith, downstream of the first pair of drawing cylinders. A suction table (22) is positioned between the first pair of drawing cylinders and the auxiliary pair of cylinders and is provided with a suction aperture (34); an auxiliary belt (24) permeable to air and passing over the suction aperture (34) slides on the suction table (22). The auxiliary cylinder (14a) is moved by the first drawing cylinder (4a).
A method of controlling the drafting (S) of a fibre web in a card apparatus provides for a drafting change step (t1-t2) at minimum speed (VA') and a subsequent constant drafting step (t3-t4) and a speed increase (VA").
A method for adjusting the advancement of a fibre web performed by the feed cylinder (12), fitted on the nipper (4) of a combing machine provides for replacing the main wheel (14') attached to the feed cylinder (12) with a further wheel having a different number of teeth and the same pitch as the former, without modifying the configuration of the nipper.
D01G 19/20 - Dispositifs à cylindre ou à cylindre et manchon, p. ex. extrayant les fibres d'une manière continue extrayant les fibres par intermittence
Forming device (1) of a lap (L), for a lap-winder, comprising a primary calender (22), a secondary calender (24) and a carriage (41) fitted with plates (42), translatable to accompany the lap being formed. Piston- cylinder groups (50) are provided for keeping the lap being formed in forced contact with the two calenders (22, 24) and for keeping the lap (L) suspended above the calenders (22,24) during a pause in formation.
D01G 27/00 - Dispositifs enrouleurs de nappe ou de ruban, p. ex. pour recevoir la production des batteurs pour coton, des cardes pour jute ou des étirages à barrettes pour laine peignée
A suction nozzle unit (20) of a carding machine comprises a suction chamber (22) and means of adjustment (50) with a shutter element (52), adjustable to shut off the inlet aperture (22) of the suction chamber (22). Moreover, a further suction nozzle unit (1020) of a carding machine comprises a suction chamber (1022) and a deviation element (1070) upstream of the inlet aperture (1022a) of the suction chamber, adjustable to adjust the deviation with respect to a drum (101) of the carding machine.
A spinning machine (1) comprises a drawing device (100), an intermediate movement apparatus and ah oscillating device (200) for impressing a longitudinal oscillation on the roving, moved by the intermediate movement apparatus and comprising yarn guide rods (270, 280) which extend from both sides of the movement apparatus.
