SU58200A1 - Cutting machine for weft threads and edge loops - Google Patents

Description

On the issue of MexafFHaaunH of removing the ends of weft threads from the edge of the fabrics produced on automatic weaving machines, as well as removing the edge loops of the multicolored goods of multi-slot machines, many inventors are still working in the field.

A whole range of designs of such devices is already known, most of which are intended to be installed on the weaving machine itself in the form of various kinds of twine scissors, which are very often degraded and give rapid blunting of cutting blades.

Cutting the edge loops of the etch is more difficult due to its tight lining against the edge and is still performed manually.

niw / iJiaracMiiiii stshiuk nrsdnaznacheni iiepiiyio ocho | yud | d.1N of mechanization of cutting edge filaments, for which it is provided with endless brush canvases that pull the edge loops and ends of the weft threads from the edge and leading them to the knife in a tensioned state.

The design and operation of the proposed machine is as follows.

The fabric enters the machine through wooden ggr carbon bars fixed to the bed stands. On the racks there is a bremsa (shoe), which serves to tension the fabric. On va.tami bremsa there are slideways / that are fastened with the help of a lamb in any position depending on the width of the fabric (Fig. I). They serve to protect the fabric from knocking to the side. Passing the breeze, the toai enters the straighteners 2, the working surface of which is provided with oblique cuts running at an angle of 30 ° from the middle to the edges. The straighteners are reinforced on wooden pads. The shearing mechanism consists of a bicon syc brushes and scissors.

The velvety cloths are endless straps with a set of bristles or hair, rotating on rollers in the opposite direction to each other. A spiral knife 6, used on shearing machines, consisting of a cylinder with steel pens spirally mounted around its circumference can be used as a cutting device.

in the amount of from 6 to 12, and from a flat, fixedly mounted foot. When the cylindrical knife rotates at the point of contact with the flat knife, the moving fabric is cut. The disc knife can also be used in the same way.

In the table 4 of the machine, a cutout is made approximately equal to the width of the brushes in which it passes (LOWER brush. The guide rollers for the brushes are arranged — one above the table, the other under the table so that the brushes touch each other with their ends) The brushes are arranged perpendicularly with respect to the direction of movement of the fabric, as shown in Fig. 1. With this arrangement, the brushes passing on the table with their edge fall between the brushes and the weft loops extend and pull away from the edge. The brushed yarns fall at one end into the sting of the knife and are cut off. When the fabric is moving, the thread left behind with the Q / V loop (the other uncut end) comes back into the brushes and is pulled away from the fabric. of the brushes, IB, while the free end of the thread is still clamped by the brushes. As a result, the thread is always in the tensioned position and in such a state of HoiiJijiacr under the knife (), where it is cut. The table / st () of the knife has a side 5 with a slot at the location of the knife and brushes.

Ticking a side - protect the edge of the fabric from falling into the knife 6. Thus, when skipping goods, the fabric goes across the table in a tensioned position.

touching the edge of the rim, and cannot get into the knife, since for this it would be necessary to pull the rim into the slot of the rim, which is impossible with a matted cloth. The knife 6 is protected from above. safety cover, connecting 1dshch.s with a side. According to the shearing mechanism, the fabric enters the transport shaft and then, by self-storage, is placed in a trolley or on racks. Review on the organization of work, the fabric of the machine in the same way can act in the knurling on the sound element.

The role of the worker when working on the stack is reduced to the observation of the process of tissue. The worker makes sure that the fabric of the slit, as if touching its edge with a side, and, moreover, walks in a straightened form without folds. For full automation, it is desirable to use both before the knife, and after the knife of the guides of the fabric, for example, the Foxwell system; then the machine can work completely without a worker, whose role will be reduced only to refueling the machine. It is also desirable. The proposed machine can also be combined with existing shearing machines, which will make it possible to cut the fabric simultaneously along the length of the web and along the hem.

The subject matter of the invention.

The machine for cutting weft nnty and K | yumoch | A needle that differs by the use of endless brush canvases 3, set up one above the other in the table cutout and designed to pull out the weft ends and loops for later cutting them with a simple device.