SU612979A1 - Apparatus for retaining weft ends at selvedge in loom - Google Patents

Description

one

The invention relates to the field of textile engineering, in particular to a weaving machine.

A device for holding the ends of the weft yarns, containing a suction co 1J, is known.

The disadvantage of this device lies in the fact that the retention of the ends of the weft threads with a suction nozzle does not prevent the narrowing of the fabric in width directly in the area of the fabric that it is desirable to have.

It is also known a device for holding the ends of weft yarns at the edges of the fabric on a loom, containing one above another greinoks, each of which is made up of figured plates 2J.

In this device, the figured plates of one Greek, are placed between the plates of another. 1. because the interval between the figured plates includes the plates of the surf mechanism, the distance between the figured plates of the dies is large and does not provide the braking of the weft thread in the axial direction.

The disadvantage of this device is that it does not ensure the formation of strong edges of the fabric.

The aim of the invention is to increase the reliability of holding the ends of the weft yarns.

This is achieved by the fact that the plates of one comb are located opposite the plates of the other comb with the formation of a sheet of end face retaining ends of the weft bottom surfaces of the gap plates. It is preferable to have bevels on the end retaining ends of the weft yarns on the surfaces of the plates. At the same time, the size of the gap between the end surfaces of the wafer threads retaining the weft threads should not exceed the diameter of the weft thread.

FIG. 1 shows a surf mechanism and a device for holding the ends of the weft yarns at the edges of the fabric, side view; on

FIG. 2 shows section A-A in FIG. one; in fig. 3 shows an embodiment of the device for holding the ends of the weft yarn at the edges of the fabric; in fig. 4 shows section A-A in FIG. 3

The device for holding the ends of the weft threads at the edges of the fabric consists of two combs mounted from figured plates 1 and 2 and gaskets 3 and 4 with them, with this plate 1 directed against ilastin 2 (Fig. 1-4). Figured plates 1 and 2 imeyug

guides 5, holding 6 and releasing 7 weft thread 8 end surfaces. The said device is mounted at the edge of the fabric on the bracket 10 and fixed with screws 11, with the figured plasti

1 and 2 are oriented in the melady

plates of the surf mechanism 12 with teeth 13-15.

Butt end face holding the ends of the weft yarns by the surfaces of 6 figured plates 1 and 2, the gap a should not exceed the diameter of the thread.

During the operation of the loom, the plates of the surf mechanism 12 with the teeth 13-15 rotate in the direction shown by the arrow (Figs. 1 and 3). At the same time, an exact thread 8 is laid. At the installation site of the device for holding the ends of the weft threads 8, the teeth 13-15 move the end of the weft thread 8 along the end surfaces 5 and 6 of the figured plates 1 and 2. In so doing, the weft thread is deformed with the end surfaces 6 and thereby keeping from shifting in axial direction. At the same time, the ends of several weft yarns 8 are kept in this way, which do not move together with the fabric along the end surfaces 6 towards the end surface 7, where the ends of the threads 8 are released.

The proposed device provides reliable retention of the ends of the weft threads at the edges of the fabric, which prevents the narrowing of the fabric along the width of the line in the edge of the fabric. In this case, the base threads and the edge threads remain parallel and less subject to mechanical abrasion by the plates of the surf mechanism, which reduces their breakage.

Claims (2)

1. A device for retaining the ends of the weft yarns at the edges of the fabric on a loom, containing one-sided dies, each of which is assembled from shaped plates, characterized in that, in order to increase the reliability of holding the ends of the weft yarns, the plates of one comb are located opposite the plates of the other comb to form a gap between the end retaining ends of the weft threads, the size of which does not exceed the diameter of the weft yarn. 2. The device according to claim 1, characterized in that on the end retaining ends weft yarns on the surfaces of the plates are made bevels. The priority of paragraph 2. Sources of information taken into account in the examination 1. Swiss patent number 502459, cl. D 03 D 47/00, 1971. 2. For the USSR № 1709860 / 28-12, cl. D03D 47/00, 1971, according to which the decision was taken to issue an author's certificate. P Lee ai shea .. 1 13 sch3 ; - B | i | uu | e aizizzh uJ: