RU2177057C1 - Shed-forming device of loom with wave shed - Google Patents

Abstract

FIELD: manufacture of textile machines. SUBSTANCE: shed-forming device consists of heald carriers located over loom width under shed of warp and connected with device drive by means of frame cords and hooks; healds fitted with their one ends onto heald carriers and extended by flexible members. Device has rings secured to frame cords. Number of rings equals number of heald carriers. Healds have harness threads fastened to ends of healds free from heald carriers. Device drive is installed above shed of warp. Heald carriers are connected with frame cord through ends of harness threads attached to ring. EFFECT: higher operating reliability. 2 dwg

Description

 The invention relates to the field of textile engineering and for the design of a loom with a wave-like movable throat.

 Known shedding device of a loom with a wave-like movable pharynx containing the device drive located under the yarn of the warp threads and associated with the drive and placed across the width of the machine heald frames with galeveli on their opposite ends. Thus, some of the haul carriers of the frame are located under the yarn of the warp threads, others are located above the yaw (see, for example, A.S. USSR, N 452638 dated 09/23/71, class D 03 D 47/26.

 The disadvantage of this solution is that the heald frames penetrating the warp yarns significantly complicate the maintenance of the machine or make it impossible (eliminating breaks and sifting the warp yarns) with complex weaves, when the number of heeld frames is more than two in depth of the machine. Moreover, installing the device drive under the yarn of warp threads complicates the maintenance of the device. This is especially true for the execution of the device in the form of a carriage (not to mention the jacquard version of the device). In addition, the lower concept of the location of the device is characterized by strict overall limitations, sometimes hindering its implementation.

 Known shedding device of a loom with a wave-like movable throat, containing located above the throat of the warp yarn drive in the form of several jacquard machines, each working in its own phase.

 The hooks of the jacquard machines are connected to the corresponding phase and weave patterns of galeves placed across the width of the machine.

 The connection of the hooks with the galevs is carried out using arkats, made into the holes of the pool plate, corresponding to the position of the galev along the width of the machine. To carry out the process of yaw formation, the galevs are stretched with elastic elements (see, for example, application for USSR author's certificate N 1819319/12, priority dated 08.31.71).

 This technical solution provides maintenance requirements for a traditional jacquard loom. The disadvantage of this solution is that it solves the issue of pharynx formation by single threads rather than groups of threads, which is more acceptable (in the sense of implementation for a loom with a wave-like movable pharynx).

 In addition, due to restrictions on the bending of flexible elements (frame and arcade cords), the height of a loom equipped with several jacquard machines will be very significant. At the same time, despite the apparent simplicity of the solution, in the presence of a six-dimental throat wave, it will be necessary to install six jacquard machines on one loom, which is economically and structurally impractical.

 Known shedding device of a loom with a wave-like movable pharynx, containing warp arranged along the width of the machine under the pharynx, gale carriers connected with frame cords and hooks with the drive of the device, galev, worn at one end by gale carriers and stretched by elastic elements (see, for example, A.S.SSSR N 1677105 from 09.25.89, class D 03 D 47/26). The drive of the device is placed under the yawn of the warp threads, and the elastic elements are fixed directly to the ends of the galevs, free of galevnogo carriers.

 This technical solution is the closest to the invention in technical essence and the achieved result.

 A disadvantage of the known solution is the inconvenience of maintenance and repair of the shedding device with a lower drive arrangement for the production of fabrics of fine and coarse weaves. Moreover, such a device is difficult to place under the throat of the warp threads. The use of such a device for the upper location, when both the drive and the haul carriers are located above the throat of the warp threads, creates problems in servicing the machine when eliminating breaks and sifting warp threads. This is due to the fact that in the service area (above the throat of the warp yarns) an array of gale carriers appears that impedes the necessary cultivation of galevs for servicing the warp yarns.

 The technical result obtained from this invention is to simplify maintenance and repair.

 This technical result is achieved by the fact that the shedding device of the weaving machine with a wave-like movable pharynx comprises gale carriers placed along the width of the machine under the throat of the threads, connected with the help of frame cords and hooks with the drive of the device, galev, worn at one end by gale carriers and stretched by elastic elements, this it has the number of galevosochnyh rings mounted on frame cords, and galev have arkats, mounted on the ends of galev, free from galevoyas, while the drive device the twa is installed above the throat of the warp threads, and the connection of the haul carrier with the frame cord is carried out through the ends of the arcades fixed on the ring.

 Installing the drive of the device over the throat of the warp threads makes it easier to maintain and repair the device and remove the problem of the dimensions of the drive that existed at its lower location. The use of a ring for each haul carrier, on which a frame cord is fixed, and communication of the ring with the haul carrier through a galev with arkats makes it possible to obtain the simplest alternative to healization for a group of threads, which at the same time does not contain rigid elements and does not interfere with the uniform distribution of galevs (warp threads) in refueling. Such a solution allows the galev to be moved apart by an amount convenient for winding the warp threads into the eyes of the galevs and the tissue-forming mechanism of the machine.

The invention is illustrated by drawings, in which:
figure 1 shows the proposed shedding device, side view (in section);
figure 2 is the same as in fig. 1, but rear view along arrow "A".

 The proposed shedding device comprises a known drive 1 with a system of hooks 2 and 3, interacting with bipolar electromagnets (not shown in the drawings).

 Hooks 2 and 3 of one electromagnet through flexible connections 4 are connected to the upper rollers of the chain hoists 5, forming with them a single system.

 To fix the ends of the flexible connection 4 on the hooks 2 and 3, the flexible connection 4 has hooks 6, and on the hooks are made square holes for the passage of hooks.

 The lower rollers of the chain hoists 5 are connected with the help of the frame cords 7 to the rings 8, which, in turn, are connected to the galevs by means of the articulated cords 9. The free ends of the frame cords 7 are rigidly, but with the possibility of adjustment, attached to the plate 11. This adjustment is necessary to ensure the preset position of the throat of the warp threads 12 in relation to the shuttle and the filling line (not shown in the figure).

 The lower ends of the galevs are worn on the galley carriers 13, mounted on the plate headers 14. The latter are connected with the springs 15 to the base of the heald system 16 and can move freely in the fixed guides 17.

 The spring 15, in addition to returning the plate headers 14 to the lower position, also ensures the functioning of the entire system in a stretched state due to pre-tensioning.

 The described shedding device operates as follows. During the operation of the loom, movement from a pair of hooks 2 and 3 corresponding to one bipolar electromagnet is transmitted via flexible coupling 4 to the chain hoist 5. Next, the resulting movement using the frame cords 7 is transmitted to the rings 8 and through the arc cords 9 and galev 10 to the plate headers 14 by means of gale-carriers supported on them 13. Galeva 10, interacting with warp threads 12, form a pharynx for the passage of the shuttle (not shown in the drawing). Depending on whether both hooks 2 and 3 move, both stand or one of the hooks of the electromagnet moves, heald 14, respectively, stands in the upper or lower position or moves to one of these positions. Moreover, the return of the heatsink 14 to the lower position and their retention in it is carried out using springs 15.

 The proposed design of the shedding device, in contrast to the prototype, can significantly improve the ease of maintenance and maintainability of its drive, as well as electronic control systems. In addition, the upper location of these nodes above the warp threads allows you to simplify the dust and dust removal system.

 Due to the fact that the shedding device controls the groups of threads, and the control elements are located directly above the haul carriers, the flexible elements of the system have no kinks and, therefore, their length is determined only by the convenience of winding the dangling warp threads and the height of the yawn wave.

 Almost the length of the arc wire cords 9, i.e. the distance from the upper eye of the galevs 10 to the bearing ring 8 in the proposed shed forming mechanism can be taken in the range of 0.8 ... 1.0 m. This allows you to easily find a dangling thread, push the crib out to run through the warp threads and put them into the separation grid. In addition, under these conditions, a uniform distribution of warp threads along the width of the loom is achieved, as well as the optimum height of the position of the drive of the shed forming mechanism.

 The latter allows you to install looms with a wave-like movable pharynx, equipped with the proposed shedding mechanism, in workshops with a generally accepted height of the ceiling and ceilings.

 To service the specified mechanism and electronic control system does not require special flyovers, as is the case when using jacquard machines in traditional weaving.

Claims (1)

 The shed forming device of a loom with a wave-like movable pharynx containing gale carriers placed along the width of the machine under the yawn of threads, connected by means of frame cords and hooks with a drive of the device, galev, worn at one end on gale carriers and stretched by elastic elements, characterized in that it has according to the number of haul carriers, rings fixed on frame cords, and galeva have arkats fixed on the ends of haul free from haul carriers, while the drive of the device is mounted above the yawning threads Again, a connection to the frame galevonositelya cord through the ring attached to the ends of Arkatov.

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