SU151648A1 - Device for cutting the weft yarn at the edge of the fabric from the side of the piercing element on shuttleless weaving machines - Google Patents

Description

A device is known for cutting weft yarns at the hem of the fabric from the side of the piercing element on shuttleless looms with the help of scissors that are driven from the batana. This adaptation is activated at the moment of arrival, i.e., in the front position of the batane, when the weft thread is not sufficiently well fixed due to the change of the sheds and the work of the edge-forming mechanisms, as a result of which a loose edge is obtained.

In the described device, this disadvantage is eliminated, a high-quality edge is created, for which it is equipped with a plate fixed to the batan, intended for inserting the weft thread for a hook fixed to the rod, serving to hold it, and the shears are connected by a lever system to the bat for cutting the thread position

FIG. 1 schematically shows a device for cutting the weft yarn, side view; in fig. 2 - its top view; “And FIG. 3 scissors.

A plate 2 is fastened on a baton / loom and is used to place weft yarn 3 by hook 4, which is fixed to the pin 5 of scissors 6 and serves to hold the web. Scissors 6 consist of two spring-loaded cutting blades 7 and 8, of which the blade 7 is fixed by a screw 9 fixedly on the rod 5, and the other blade 8 is movable, swinging around axis 10 with the help of levers 11, 12 and 13 connected to the weaving baton 1 machine tool.

The operation of the device is as follows.

When the batana 1 moves from the rear to the front position, the weft thread 3 is slung with the plate 2 and hooks 4, attached to

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shparutke 5; if the batane / is in the front position, the scissors are open, as a result of which the thread is easily inserted into their throat and held in it by a hook 4.

When the bat l with the reed 14 is moved to the rear position (shown in Fig. 1 with a thin line), (lever 13 connected to bat I, rotates pivotally connected levers 12 and //. Movable blade 8, turning on axis 10 , it overlaps the scissors blade 7 and thus cuts the weft thread 3 at the edge of the fabric in the rear position of the batana /, i.e.

Subject invention

A device for cutting the weft yarn at the edge of the fabric from the side of the pro-flashing element on shuttleless looms using scissors set in motion from the batana, characterized in that, in order to increase the quality of the edge, it is equipped with a plate secured on the yoke to the hook fastened on the spin-rod serves to hold it, and the shears are connected by a lever system with a batana for cutting the thread in the rear position thereof.