SU1608260A1 - Weft inserter to shuttleless loom - Google Patents

Abstract

The invention relates to textile machinery, relates to devices for laying a weft yarn to a shuttleless loom and allows for the processing of weft in the form of tapes, including metal ones. The device has two grippers 1 and 2, installed respectively on the feeding and receiving rapiers. The gripper 1 of the feeding rapier has a roller wedge clamp, and the gripper 2 of the receiving rapier has a clamping jaw 7 with a latch 11, the shank 12 of which interacts with the protrusion 13 of the gripper 1. 2 z. f-ly, 2 ill.

Description

FIG. 7

The invention relates to textiles, in particular, to the design of devices for laying weft, and can be used in the production of flat yarn fabrics on rapier weaving machines.

The purpose of the invention is the expansion of technological capabilities by surrounding the liver with laying a tape weft of a thread, including a metal one. FIG, shows a device at the moment of descent of the rapier in the throat before transferring the weft yarn; Fig, 2 - the same, with a divergence of foils.

The device contains two grippers 1 and 2 of the weft yarn, placed respectively on the feeding and receiving rapiers installed with the possibility of reciprocating movement in antiphase. The gripper 1 is made in the form of a roller wedge clamp, the roller 3 of which is placed in the wedge groove 4 with the possibility of reciprocating between flat it is elastic by element 5 and protrusion 6o. The gripper 2 of the receiving rapier has a clamping sponge 7, which is pivotally mounted with the possibility of swinging in a vertical plane, G k 7 7 is spring-loaded with a spring 8

The device is equipped with a means of clamping the weft yarn 9 in the gripper 2, which has a spring-loaded bar {ip 10 latch 11 with the shank 12 located on the clamping jaw 7 and the protrusion 13 on the gripper 1 "

Opening of the grip 2 has an emphasis 4, fixedly mounted on the frame of the machine tool S and a slide 5 placed on the clamping jaw 7,

The device works as follows

In the initial position, prior to feeding, the weft thread 9, predominantly having the form of a tape, is inside gripper 1 under roller 3, pressed by a flat spring 5 to the inclined surface of the pin groove 4, while the end of the tape goes beyond the gripper 1 by 3- 5 mm, takes a slightly bent down position.

When moving the rapier - weft feed (tape) 9 - roller 3, due to the friction forces, additionally pressing against the inclined surface of the groove 4, clamps the tape. When approaching the grip 2, the end of the tape is located under the clamping jaw 7, while the protrusion 13 pushes the latch 1 onto the shank 12, and the spring

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five

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five

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by 10, turning the sponge 7, carries out the clamping of the tape.

During the return stroke in the feed grip 1, the roller 3, due to friction forces, rolls away from the inclined surface of the protrusion 6, then, flattening the flat spring 5, rolls along the weft belt 9, aligning its tension-twisting sections. At the same time, the grip 2 moves the band the duck in the opposite direction, at the end of the stroke brings the slide 15 of the sponge 7 to the fixed stop 14 of the weaving machine, Last, lifting the clamping sponge 7, releases the end of the weft, while the latch 1 1 locks the open position under the action of the spring 10 sponge 7.

In order to synchronize the operation and in order to prevent retraction of the weft, some advance of the movement of the gripper 1 to the initial position is necessary,

Constructive implementation of the proposed device provides a reliable clamp, feed and receive tape duck, eliminates the reverse pulling duck. In addition, the device may lay a weft from metal wire, as well as from other materials, such as polyester, polyethylene, and so on.

Claims (3)

Invention Formula 1, A device for laying a weft yarn to a shuttleless loom containing a feed and a receiving rapier, installed with the possibility of reciprocating back-phase movement and bearing weft yarns, one of which, placed on the receiving rapier, has a spring-loaded hinged spindle mounted on it , the means of clamping the thread in the catch of the receiving rapier when transferring the thread in the throat and the catch opener at the exit of the receiving rapier from the throat, which has a stop for interacting with the clamping sponge, The purpose of expanding technological capabilities by ensuring the tape weft thread, including metal, is captured by the feed rapier in the form of a roller wedge clamp, and the clamping 1-ubki receiving rapier is installed with a possibility of swinging in the vertical plane, while the means for clamping the weft thread has in capture the receiving rapier has a spring-loaded latch hinged on the clamping sponge and provided with a shank, and on the catch of the feeding rapier there is a protrusion for interacting with the latch shank. 2. The device according to claim 1, characterized in that the roller wedge clamp has a wedge groove, and his roller is installed with the possibility of reciprocating movement in this groove, t. 3. The device according to claim 1, wherein the stop opens the pickup of the receiving rapier fixedly and the clamping jaw has a slide for interacting with the stop. P Phage. 2