SU1664912A1 - Gripper of feed rapier in shuttleless loom - Google Patents

Abstract

The invention relates to textile machinery and improves the reliability of the grip operation by preventing clogging. The gripper of the feeding rapier comprises clamping elements 2 and 3 rigidly connected to one another, forming a wedge gap 4, which ends with a slit 6 with parallel sides. The slit 6 passes into the cavity 7, whose height is greater than the width of the slit. Two plates are fixed on the gripping body, overlapping one another and the ends of elements 2 and 3. The first plate is pointed in the direction of the rapier and serves to prevent the warp threads from falling between the clamping jaws. The second plate has a V-shaped slot and is designed to trap the weft yarn. In the weft thread clamping zone, the clamping elements have longitudinal grooves. 1 hp ff, 3 ill.

Description

The invention relates to textile machinery and is intended for use on shuttleless weaving rotary machines.

The aim of the invention is to improve the reliability of the gripping operation by preventing its clogging.

Figure 1 shows the capture from the edge of the fabric, a General view. figure 2 is the same, top view; on fig.Z - the same, front view.

The gripper comprises a housing 1, on which the clamping elements 2 and 3 are rigidly fixed, for example by means of rivets and screws.

The clamping elements 2 and 3 from the front of the rapier form a wedge gap 4 to grip and hold the weft yarn 5, which, narrowing, passes into the slit 6 with parallel sides. Slot size

determined by the number of the weft to be processed and must be less than the diameter of the thread and may have a length of from 0.2 to 1 mm.

For the free removal of fluff, fibers, dressing and other foreign particles into the environment, a cavity 7 is provided, the height of which must be greater than the width of the slit.

In order to prevent the warp threads from getting into the clamp, a first vertical plate 8, pointed along the rapier, is fixed on the gripper case 1. The second vertical plate 9 (thread catcher) is provided with a V-shaped slot 10, which serves to trap the weft thread passing through the eye 11, and guide it into the clamp between the 2nd and 3rd elements. The depth of the slot 10 is received

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such that the thread 5, fastened in the clamp, forms an angle with the axis when the rapier moves, and is less than 90 ° with its axis.

Plate 8 overlaps plate 9, and both of them overlap the ends of the jaws of elements 2 and 3.

In each element 2 and 3, notches 12 and 13 are made, located one against the other and forming a channel in which the height and width of the cross section is larger than the diameter of the thread. Thus, in this grip design, two compression sections of the thread 5 are provided.

Capture works as follows. When the body 1 approaches the opening shed of the shuttleless loom, the slot 10 catches the weft thread 5 located between the edge of the fabric 14 and the guiding eye 11 and passes through the scissors 15.

Upon further movement of the feeding rapier, the thread 5 enters between the clamping elements 2 and 3, slides along the latter towards the narrowing of the wedge gap 4 and is wedged in it. The degree of seizure depends on the tension of the weft thread 5.

When the body 1 enters the shed of the basis of the weaving machine, the thread 5 is clamped with scissors 15,

When a rapier meets in the middle of the throat, the receiving rapier (not shown) enters the inside of the feeding rapier with its hook and seizes the weft thread laid by the feeding rapier on half of the canvas. In case of divergence, the rapier utokina 5 is pulled out of the catch of the feeding rapier and laid with the receiving rapier through the throat on the second half of the web.

In the event that foreign particles get between elements 2 and 3, they are pushed by the thread 5 with its subsequent clamping through the slit 6 into the cavity 7, from where these particles are carried into the surrounding space.

Thanks to using hard

the wedge clamp eliminates vibrations during operation. In addition, in this case, the weft yarn is securely gripped and held, regardless of the number

0 yr, since the operation of the grip is based on the self-sealing effect. By the same token, the possibility of losing the thread when it is laid through the throat is prevented. Thus, this design of the 5 grip of the feeding rapier allows the weaver and equipment to be more productive, as well as the quality of the fabric, as it ensures reliable clamping and retention of the weft yarn, due to the prevention of the possibility of trapping of the grip.

Claims (2)

1. Capture the feed rapier to shuttleless loom containing 5 mounted on the body with the formation of a wedge gap for pinching the weft thread, two clamping elements, the first of which is rigidly fixed, characterized in that, in order to increase 0 by preventing it from clogging, the second clamping element is rigidly connected to the first, and the wedge gap ends with a slot, the sides of which are parallel to each other, with the slot 5 passes into the cavity, the height of which is greater than the width of the slit. 2. Capture by p, 1, o t l and h a y i and u with the fact that, in order to increase the reliability of holding the thread, the clamping elements in the zone 0 clamping threads have longitudinal grooves located opposite one another. FIG. 2 11 sA / J