FR2866017A1 - Assembly apparatus for threads in between two treatment machines comprises supporting frame with individual thread guides and knotter or welder - Google Patents

Abstract

The apparatus consists of a supporting frame (1) with a guide unit (2) for individual threads that are then inserted into an assembly unit (3) for knotting or welding together. It also has a feed unit (4) that provides temporary individual support for threads from an upstream machine, a unit (5) for inserting the threads into the assembly unit (3), and fixing units (6, 7, 8), and a cutter for the free ends of the threads prior to assembly. The supporting frame can be free-standing and mobile, or fixed to one of the thread treatment machines, either upstream or downstream. It consists basically of two parallel side flanges (10) with guide, feed, assembly and other units located between them and able to move in grooves (13, 14) in the flanges.

Description

-1-DESCRIPTION

  The present invention relates to the field of the textile industry, in particular the machines for assembling sheets of yarn between two yarn-processing machines, such as heat-fixing and winding machines, or vaporizing machines, and winding or meshing or between means for feeding a multitude of threads and weaving or tufting machines, and relates to a thread assembly device between such thread processing machines.

  Various assembling devices are currently known from one thread to another, in particular for connecting the thread end of the end of one reel with the thread end of the beginning of another reel. It is thus possible to introduce long lengths of yarn into different textile machines, these lengths being limited only by the number of reels used.

  These wire assembly devices, generally called splicers, operate according to two principles. These principles consist either in an intermingling with a swirling air jet that entangles the end fibers of two ends of wire to be assembled, or, when the material constituting the threads allows, namely in the case of thermoplastic yarns, by melting the two ends together.

  No. 6,073,434 and US Pat. No. 5,003,676 respectively disclose devices which allow the simultaneous assembly of a plurality of pairs of wires and which assemble each pair of wires according to one of the principles stated above.

  Furthermore, US Pat. No. 5,297,323 discloses an apparatus which moves an assembly unit in front of each pair of wires to be assembled and thereby assembles pairs of wires one after the other.

  The use of the multifilament assembly devices and devices known to date and as described above makes it possible to obtain a substantial saving in time compared to a manual assembly process of each of the pairs of wires to be assembled. .

  However, these known devices and devices require a significant preparation time to present each individual wire constituting a pair of son to be assembled, in a correct position relative to the assembly device.

  The present invention aims to overcome the disadvantages of devices and devices known to date by providing a son assembly device, in particular between two son processing machines, such as heat-fixing and winding machines or coupling or steaming machines and coiling or winding machines or between feeding means of a multitude of threads and weaving or tufting machines, allowing a fast and precise positioning of the ends of a pair of yarns. son to assemble between them.

  For this purpose, said wire assembly device is characterized in that it consists essentially of a support frame, an individual guide means of the son coming from the machine downstream and insertion of these son in a means for assembling, by entanglement, melting or otherwise, by means for provisionally feeding and temporarily holding the wires coming from the machine upstream, by means of a device for inserting these threads into the entanglement assembly means, by melting or otherwise, by sets of blocking position of the son before and during the assembly by entanglement, melting or other, and by means of cutting the free ends of the son before said assembly.

  The invention will be better understood, thanks to the following description, which relates to a preferred embodiment, given by way of non-limiting example, and explained with reference to the attached schematic drawings, in which: FIG. a perspective view of a device according to the invention disposed between two son processing machines; Figure 2 is a partial perspective view, on a larger scale, showing the device without the support frame; Figure 3 is a view similar to that of Figure 2, showing the device in the insertion position of the son from the downstream machine in a knotting means; FIG. 4 is a partial view, on a larger scale, showing the beginning of the phase of placing the wires coming from the machine upstream, and FIGS. 5 and 6 are perspective views, with a still enlarged scale, representing respectively the final insertion of the son from the machine upstream, in the knotting means and the cutting of the free ends of the son before assembly.

  FIG. 1 of the appended drawings represents, by way of example, a device intended to be mounted between two yarn-processing machines, such as heat-setting and winding machines, or winding machines or winding or winding machines; or between means for feeding a multitude of threads and weaving or tufting machines, for the purpose of assembling the threads.

  According to the invention, this device essentially consists of a support frame 1, by a means 2 for individually guiding the wires coming from the downstream machine and for inserting these wires into an entanglement assembly means 3, by melting or otherwise, by means 4 for temporarily supplying and holding the yarns coming from the upstream machine, by a device 5 for inserting these yarns into the assembly means 3 by entanglement, fusion or other by assemblies 6 to 8 for blocking the position of the wires before and during assembly by entanglement, melting or the like, and by means 9 for cutting the free ends of the wires before said assembly.

  The support frame 1 may be in the form of a mobile independent frame, as shown in FIG. 1 of the accompanying drawings, or be integral with one of the yarn processing machines, downstream or upstream, and may have, on the one hand, essentially two parallel lateral flanges 10, between which are mounted the means 2 for individually guiding the wires coming from the downstream machine and for inserting these threads into an assembly means 3 by entanglement, melting or other, means 3 for assembly by entanglement, fusion or other, the device 5 for insertion of the son, coming from the machine upstream, in the means 3 assembly by entanglement, fusion or other, the sets 6 8 to block the position of the son before and during assembly by entanglement, melting or other, and the means 9 of cutting the free ends of the son before assembly and, secondly, a means of receiving and holding means 4 for supply and maintenance indi temporary video of the wires entering the machine downstream.

  The means 2 for individually guiding the yarns coming from the downstream machine and for inserting these yarns into an entanglement, fusion or other assembly means 3 is constituted by a grommet plate 11 for guiding yarns originating from the downstream machine, fixed between the parallel side flanges 10 of the support frame 1, and by a movable counterplate 12 movable parallel to the eyelet plate 11, via axes (not shown) provided near its upper edge and cooperating with guides 13 provided in the parallel side flanges 10. The guides 13 extend in front of the eyelet plate 11 and describe, between their ends close to the latter, a non-rectilinear path deviating from said plate to eyelets 11, their ends being provided with notches for stopping and holding in position. In the embodiment shown in Figures 1 to 4 of the accompanying drawings, the guides 13 have a semi-cylindrical shape, however, they could also have another curvilinear shape or a broken line shape.

  Furthermore, for its actuation moving in the guides 13, the movable counterplate 12 is advantageously provided, near its upper edge, at least one operating handle, not shown. Thanks to such a handle, the movable counterplate 12 can be easily brought from its rest position, in normal operation of the downstream and upstream processing machines, to its position of placing the wires coming from the machine downstream. and insertion of these son in the assembly means 3.

  The joining means 3 by entanglement, melting or the like, is of the type known as "splicer" and is in the form of a longitudinal bar extending between the parallel side flanges 10 and provided at regular intervals. notches 3 'for receiving the ends of the son to be connected, a pneumatic nozzle or a heating device opening inside each notch 3' for effecting pneumatic entanglement or fusion welding. In addition, the longitudinal bar forming the means 3 may be provided on its upper face with a partial closing bar of the upper part of the notches 3 '. Such a closing bar is known per se and is movably mounted transversely on the bar forming the means 3, so as to allow pinching of the son before and during the beginning of the pneumatic entanglement operation or during the welding by fusion.

  According to a characteristic of the invention, the assembly means 3 by entanglement, melting or otherwise, is mounted between the parallel side flanges 10 with the possibility of slight displacements parallel to the ends of the son to be assembled by entanglement or welding, for example via a pneumatic cylinder, electrical or mechanical, during the assembly operation. The control of this displacement of the means 3 can be carried out by means of a programmable controller or by another automatism taking into account the beginning of the entanglement or welding operation and the total duration of this operation.

  The movable counterplate 12 is applied against the eyelet plate 11 during the normal operating periods of the wire processing machines and can be moved to an insertion position of the wires coming from the downstream machine in the means 3 assembly by entanglement, melting or the like, by making a movement along a path of separation, initially discarding the threads of the eyelet plate 11, then bringing the latter back, each into a notch 3 'of the means assembly 3 (Figure 3).

  The means 4 for temporarily supplying and holding the yarns coming from the machine upstream is preferably in the form of a gripping comb of each yarn individually, this comb being arranged in the insertion position of these yarns. in the corresponding notches 3 'of the assembly means 3, in the means for receiving and holding the support frame 1, in the form of housings for the ends of said comb.

  The device 5 for inserting the yarns, coming from the upstream machine, into the entangling, merging or other assembly means 3 is advantageously constituted in the form of a detour and guide bar having parallel circumferential grooves. of a number equal to that of the notches of the comb forming the means 4, as well as notches of the connecting means 3 and whose grooves are equal to that of said notches 3 ', and is mounted on the support frame 1 in a displaceable manner in guide grooves 14 of the parallel lateral flanges 10. These guide grooves 14 preferably extend substantially parallel to the guide grooves 13 of the movable counterplate 12 of the means 2 and outside these grooves 13 relative to each other. in the center of the flanges 10, these guide grooves 14 being provided at each end with a stop and hold notch, and a notch stop and intermediate hold 14 ', close to its upper end and remote from the means 2.

  Thus, the detour and guide bar forming the device 5 can be moved from a lower rest position, as represented in FIGS. 1 and 2, to an intermediate position (FIG. 4), in which the comb forming the means 4 can to be passed over said detour and guide bar and in front of the means 2, for its implementation on the support frame 1 (Figure 5), in its holding position shown in Figure 1. It s' then that each individual wire, held by the comb forming the means 4, is guided in a peripheral groove of the bar forming the device 5 and, after mounting said comb in its holding position in the support frame 1, each wire will be in face of a notch 3 'of the assembly means 3 by entanglement, melting or other.

  The means 9 for cutting the free ends of the son before the assembly consists of a cutting blade mounted on a movable carriage and guided transversely under the assembly means 3, in the immediate vicinity of the latter.

  The assemblies 6 to 8 for blocking the position of the threads before and during assembly by entanglement, melting or otherwise consist essentially of three crosspieces for gripping the threads individually, these crosspieces being, on the one hand, arranged respectively, the first, 6, below the bar forming the means 3 and at a distance from the latter, the second, 7, between the first, 6, and the cutting means 9 movably mounted under the bar forming the means 3 and the third, 8 , above the bar forming the means 3 and, on the other hand, each provided with a specific means for actuating the nip. The first crosspiece 6 and the second crosspiece 7 are movable perpendicularly to their longitudinal extension by guiding in the parallel side flanges 10 and are assigned, respectively, the first, 6, to the pinch son son of the sheet of son from the processing machine downstream and the second, 7, simultaneously pinching the son of the sheet of son from the upstream processing machine, after their introduction and son already in place of the sheet of son from the machine downstream, the third crossbar 8 performing a simultaneous pinching of said son in pairs, during the cutting operations of their end and assembly by intermingling, melting or otherwise. Cross members of this type have notches for insertion of the wires, each provided with a movable nipping element, all the movable gripping elements of a cross member being connected to an actuator, such as a jack.

  The crossbar 6 is further advantageously provided at its lower part with a transverse cutting means blade or heating filament (not shown), for cutting son from the machine downstream, after their positioning.

  The yarn assembly device described above operates in the following manner: After stopping a processing machine, downstream and / or upstream, possibly following a wire break or other operating problem, the all the son, from the downstream processing machine still threaded or possibly re-threaded in the means 2 for individual guide son, must be connected to the corresponding son from the upstream processing machine.

  For this purpose, the ends of the threads threaded into the means 2 are displaced, by means of the movable counterplate 12 of the means 2 for individually guiding the threads, from the initial position of the threads shown in FIGS. 1 and 2 of FIGS. attached drawings in the position shown in Figure 3 of the accompanying drawings. This movement is effected by a slight lifting of the movable counterplate 12 out of the notches for stopping and holding in position provided at the upper end of the guides 13 equipping the parallel side flanges 10 of the frame of the support 1, to the using the handle or handles advantageously provided near the upper edge of said movable counterplate 12.

  During the displacement of the movable counter-plate 12, the threads threaded into the eyelet plate 11 and into the movable counter-plate 12 are pulled through the eyelet plate 11 and brought vertically into the notches 3 'of the means 3 of assembly by entanglement, melting or other, and in the lower extreme position of the movable counterplate 12, the part of the son exiting the notches 3 'of said assembly means 3 is fed into the first crossbar 6 forming one locking assembly in position of the son and is clamped in this cross pinch. During this operation, the second crossbar 7 blocking position of the son is affected by a recoil movement relative to the plane passing through the front faces of the assembly means 3 and the first crossbar 6. After this pinch, the end of the son protruding from the lower part of the cross member 6 is cut by means of the cutting device equipping the latter.

  The movable counter plate 12 is then returned to its starting position, in which it is held against the eyelet plate 11. Then, the detour and guide bar forming the device 5 is moved from its lower rest position. , namely under the first and second crosspieces 6 and 7 and under the assembly means 3, by guiding in the grooves 14 of the parallel lateral flanges 10, to an intermediate position, in which it is held in the stop notches and 14 'of said grooves 14. The gripping comb of each single wire forming the means 4 for supply and temporary individual maintenance of the wire from the machine upstream, on which said son have previously been threaded, is then put in place, successively by passing above the guide bar and detour forming the device 5, so that each wire is guided in a circumferential groove of the adite bar, in front of the means 2 for individually guiding the wires coming from the machine downstream and in front of the assembly means 3, as well as in front of the second crossbar 7 for locking in position of the wires, then by fitting its ends in the housings corresponding to the support frame 1.

  It follows that all the yarns held by the comb forming the means 4 are brought in front of the notches 3 'of the assembly means 3, as well as in front of the notches for insertion of the threads of the second crosspiece 7, the first crosspiece 6 already pinching the son from the downstream processing machine is then brought into a retracted position with respect to the front face of the second crossbar 7. The detour and guide bar forming the device 5 is then moved to its upper extreme position by stalling out of the intermediate stop and hold notches 14 'and guiding in the grooves 14 to the upper end thereof and penetration of its axis into the corresponding stop and end holding notches ( Figure 4).

  By arriving in this position, the device 5 moves the son, guided on the detour bar and guide constituting it, in a position such that they penetrate, firstly, in the insertion notches son of the second crossbar 7 and, secondly, in the notches 3 'of the assembly means 3 (Figure 5). The clamps of the second cross member 7 are then actuated on closing, so that the son coming from the upstream processing machine, as well as the son coming from the downstream processing machine are pinched in this second crosspiece 7. Indeed due to the prior removal of the first crossbar 6 pinching the son from the downstream processing machine, these son have automatically penetrated into the corresponding notches of the second cross on arrival at the service position thereof, after the pinch of the son coming downstream by the first crossbar 6.

  Simultaneously, the closure bar of the assembly means 3 is also actuated in the direction of a nip of the son, as well as the third crossbar 8, so that the ends of the son are fully immobilized, especially at the level of the longitudinal bar forming the assembly means 3. The cutting means 9 is then actuated and its cutting blade, mounted on a movable carriage, makes a rapid transverse displacement in which all the son is cut flush with the underside of the bar forming the assembly means 3. The nozzles or heating devices equipping the notches 3 'of the latter are then supplied with air under pressure or electrically, so as to perform entanglement or welding of the fibers of the cut ends of each pair of wires housed in each notch 3 '. To complete this entanglement or welding, the assembly means 3 may be affected by a slight movement of descent and rise.

  Thanks to the invention, it is possible to produce a device for assembling yarn between yarn-processing machines, such as heat-fixing and winding machines or meshing machines, or vaporizing and winding or winding machines. or between means for feeding a multitude of threads and weaving or tufting machines, by making it possible very quickly and very precisely to carry out the preparatory work of positioning the thread ends of a pair of threads to be assembled between them.

  Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims (16)

-10- CLAIMS   1. Apparatus for assembling yarn between two yarn processing machines, such as heat-fixing and winding machines or meshing machines or steaming and winding machines or meshing machines or between feeding means a multitude of threads and weaving or tufting machines, characterized in that it consists essentially of a support frame (1), by a means (2) for individually guiding the threads coming from the downstream machine and inserting these threads in a means (3) of assembly by entanglement, melting or other, by a means (4) for supply and temporary individual holding of the son from the upstream machine, by a device (5) ) of insertion of these son in the assembly means (3) by entanglement, melting or other, by assemblies (6 to 8) blocking in position of the son before and during the assembly by fusion entanglement or other , and by means (9) for cutting the free ends of the wires before led it assembly.   2. Device according to claim 1, characterized in that the support frame (1) is in the form of a movable independent frame, or is secured to one of the son processing machines, downstream or upstream, and has, on the one hand, substantially two parallel side flanges (10), between which are mounted the means (2) for individually guiding the wires coming from the machine downstream and inserting these wires in a means (3) assembling, by entanglement, melting or the like, means (3) for assembly by entanglement, melting or the like, the device (5) for inserting the threads entering the machine upstream in the means (3) of assembly by entanglement, fusion or otherwise, the assemblies (6 to 8) for blocking the position of the threads before and during assembly by entanglement, melting or the like, and the means (9) for cutting the free ends of the threads before the assembly and, secondly, a means for receiving and maintaining the means (4) for feeding e t temporary individual maintenance of the son from the machine upstream.   3. Device according to any one of claims 1 and 2, characterized in that the means (2) for individually guiding the son from the machine downstream and insertion of these son in a means (3) of assembly by entanglement, fusion or otherwise, is constituted by a plate with eyelets (11) for guiding the wires coming from the machine downstream, fixed between the parallel lateral flanges (10) of the support frame (1), and by a movable counter plate (12) movable parallel to the eyelet plate (11), via axes provided near its upper edge and cooperating with guides (13) provided in the parallel side flanges (10).   4. Device according to claim 3, characterized in that the guides (13) extend in front of the eyelet plate (11) and describe, between their ends close to the latter, a non-rectilinear path deviating from said plate eyelets (11), their ends being provided with notches for stopping and holding in position.   5. Device according to claim 3, characterized in that the movable counterplate (12) is provided near its upper edge, at least one operating handle.   6. Device according to any one of claims 1 and 2, characterized in that the means (3) assembly entanglement, melt or otherwise, is in the form of a longitudinal bar extending between the flanges parallel sides (10) and provided at regular intervals with notches (3 ') for receiving the ends of the son to be connected, a pneumatic nozzle or a heating device opening inside each notch (3') to realize the pneumatic assembly or fusion welding.   7. Device according to claim 6, characterized in that the longitudinal bar forming the means (3) is provided on its upper face with a partial closing bar of the upper part of the notches (3 ').   8. Device according to claim 6, characterized in that the means (3) for assembly by entanglement, melting or otherwise, is mounted between the parallel side flanges (10) with the possibility of slight displacements parallel to the ends of the son to tie by entanglement or welding, for example by means of a pneumatic jack, electrical or mechanical, during the assembly operation.   9. Device according to any one of claims 3 to 5, characterized in that the movable counter plate (12) is applied against the eyelet plate (11) during the normal operating periods of the son processing machines and is moved, in an insertion position son from the machine upstream in the means (3) assembly by entanglement, welding or otherwise, performing a movement along a distance path, spreading, in a first time, the son of the eyelet plate (11), then bringing the latter, each in a notch (3 ') of the assembly means (3).   10. Device according to any one of claims 1, 2 and 6, characterized in that the means (4) for supply and temporary individual holding son from the machine upstream is in the form of a comb pinching each wire individually, this comb being arranged, in insertion position of these son in the corresponding notches (3 ') of the assembly means (3), in the means for receiving and holding the support frame (1 ), being in the form of housings for the ends of said comb.   11. Device according to any one of claims 1, 2, 6 and 10, characterized in that the device (5) for insertion of son from the machine upstream in the means (3) assembly by entanglement, melting or otherwise, is constituted in the form of a detour and guide bar having parallel circumferential grooves of a number equal to that of the notches of the comb forming the means (4), as well as notches (3 ') of the connecting means (3) and whose spacing of the grooves is equal to that of said notches, and is mounted on the support frame (1) displaceably in guide grooves (14) parallel side flanges (10).   12. Device according to any one of claims 3 and 11, characterized in that the guide grooves (14) extend substantially parallel to the guide grooves (13) of the movable counterplate (12) of the means ( 2) and externally to these grooves (13) relative to the center of the flanges (10), these guide grooves (14) being provided at each end with a stop and hold notch, and a notch intermediate stop and hold (14 ') close to its upper end and away from the means (2).   13. Device according to claim 1, characterized in that the means (9) for cutting the free ends of the son before assembly consists of a cutting blade mounted on a movable carriage and guided transversely under the assembly means (3). ), in the immediate vicinity of the latter.   14. Device according to any one of claims 1, 2 and 13, characterized in that the assemblies (6 to 8) for blocking the position of the son before and during assembly entanglement, melting or otherwise, consist, essentially, three crosspieces strangling son - 13 individually, these cross members being, respectively, disposed respectively, the first (6) under the bar forming the means (3) and at a distance from the latter, the second (7) ) between the first (6) and the cutting means (9) movably mounted under the bar forming the means (3) and the third (8) above the bar forming the means (3) and secondly , each provided with a means for actuating the nip.   15. Device according to any one of claims 1, 2 and 14, characterized in that the first crossbar (6) and the second crossbar (7) are movable perpendicular to their longitudinal extension by guiding in the parallel side flanges (10). ) and are assigned, respectively, the first (6) to pinch the son of the sheet of yarn from the downstream processing machine and the second (7) to simultaneously pinch the son of the sheet of yarn from the machine of upstream processing, after their introduction, and son already in place of the sheet of yarns from the machine downstream, the third crossbar (8) performing a simultaneous pinching of said son in pairs, during the cutting operations of their end and assembly by entanglement, melting or otherwise.   16. Device according to any one of claims 14 and 15, characterized in that the first crossbar (6) is further provided at its lower part with a transverse cutting means blade or heating filament, for the cutting of the son coming from the machine downstream, after their setting in position.