SU903401A1 - Selvage device to shuttle loom - Google Patents

Description

one

The invention relates to textile manufacturing and is intended for use on weaving machines for forming a fabric edge.

A edge-cutting device is known, which contains an actuator drummer and a single-shoulder rotary crustacher, at different levels of which the mounting and holder with a spring-loaded needle holder, carrying a fixed needle, are installed. The device works as follows. During forward movement, the striker mounted on the bat hits the tilting arm of the pivot arm and rotates it, at the same time the holder with the needle holder turns, while the fixing needle rises and releases the loop of the previously laid weft yarn. Upon further movement of the batan forward, the reed interacts with the spring-loaded needle holder and pushes it into the holder. When the batan departs back, the needle holder, under the action of the spring, returns to its original position, the pivot arm and the holder rotates on it, the locking needle descends and seizes the loop of the newly laid

weft yarn. Then the cycle repeats 1.

However, this edge-forming device, due to the shock effect, causes increased wear of the reed, serves as an additional source of noise, can only be used on low-speed weaving machines and is not applicable at work, at high speeds. In addition, the design of this device does not allow the locking needle to withdraw from the working area at the time of machine filling or web development in the edge zone, and 15 the absence of a vertical stop on the locking needle in some cases leads to overlap and breakage of the weft yarn.

Closest to the proposed edge-forming device to the shuttle loom, which contains a lever connected to the machine drive for: installing: a needle holder carrying a needle for fixing the weft yarn, 25 located in the zone of the extreme main thread 2.

The disadvantages of this device are that it has a percussive drive from the machine’s batane, 30 which is an additional source of noise and can only be used on low-speed machines. Moreover, the design of this device does not allow the needle to be taken out of the working area. the time of refilling the machine or the development of the blade in the area of the edges

The aim of the invention is to improve ease of maintenance and reliability.

This goal is achieved by the fact that the needle holder arm is connected to the drive by means of a double-arm lever connected to the main shaft of the machine and pivotally connected to it and to the needle holder arm rod. The needle holder is pivotally mounted on the lever and connected to it by means of a hinge. The hinge connecting the needle to the needle holder lever is mounted on this lever with the possibility of moving along it to change the needle stroke. T ha is made adjustable in length

FIG. 1 is a schematic representation of the proposed device, side view in FIG. 2 - the same, top view

The device has a lever 1 for the needle holder 2, which is installed by means of the hinge 3. On the needle holder 2, the needle 4 is strengthened. The needle holder 2 is connected to the lever 1 by a latch 5. The double-arm lever 6 is connected to the lever 1 by the hinge 8 and connected to the main shaft of the machine (not shown ). The hinge 8 is mounted on the lever 1 and has the ability to move along it to change the needle stroke,

The edge-forming devices (right and left) are installed at the edges of the fabric, so that the needle 4 touches the extreme warp threads.

The double-shouldered lever b receives a swinging movement from the wire body of the machine (main head) and, through 7, transmits it to lever 1. Two extreme positions are important in the operation of the device - lowering and raising the needle 4.

After laying the weft yarn. lever 1 is in the extreme left position, with needle 4 lowering

and holds the loop of the weft thread until the end of the next run. The needle 4 rises at the time of the surf and releases the weft loop. The amount of movement of the needle 4 is controlled by moving the hinge 8 along the lever 1. If necessary, the needle 4 can be removed from the working area by releasing the needle holder 2 with the latch 5 and turning it around the hinge 3.

The application of the proposed device allows to increase the ease of maintenance and reliability in operation, which ensures obtaining high-quality fabrics.

Claims (2)

1. A flanging machine to the shuttle loom, comprising a lever connected to the machine drive to install the needle holder, which carries a needle for fixing the weft yarn, located in the extreme main thread area, in order to improve ease of maintenance and reliability In operation, the needle holder is connected to the drive by means of a two-arm lever connected to the main shaft and pivotally connected to it and to the needle lever holder, and the needle holder is hinged on the lever and connected to it. 2. A device according to claim J., characterized in that the hinge connecting the rod to the needle-holding lever is mounted on this lever so that it can move along it to change the needle stroke, while the rod is made adjustable in length. Sources of information taken into account in the examination 1. Patent GDR 93128, cl. D 03 D 47/40, 1969. “, D USSR Copyright Certificate №. 150790, class D 03 D 47/46, 1961 (PROTOTYPE).