SU45542A1 - Tread shears - Google Patents

Description

The present invention is a device for trimming the end of a torn weft yarn. The essence of the invention is that the cutting device is connected to the tentacle for determining the position of the shuttle (tread) and that after the end is cut, the broken end of the weft thread leads it out of the path of the shuttle; and the dangling end of the weft yarn is pulled from the main yarn. The device for cutting and the tentacle penetrate the wall of the shuttle through a common opening, so that the wall of the shuttle is not excessively weakened.

In the schematic drawing of FIG. 1 is a horizontal horizontal projection, and FIG. 2 is a vertical projection of the device at the moment when the device FOR cutting approaches the shuttle to cut off the dangling end of the weft yarn; FIG. 3 depicts a device; in a resting position; FIG. 4 is a front view of the cutter. how the thread is cut; FIG. 5 shows the position of the devices for cutting and pinching after the thread has been cut.

(69)

The designations in the drawings are as follows: 1 - shuttle, 2 - hole made in the side wall of the shuttle for passage of the shuttle's tentacles and cutter attachment, 3 - weft bobbin, 4 - weft thread, 5 - wall of the shuttle box, 6 - hole in the wall of the shuttle box for the passage of the tentacles and the adaptation FOR cutting, 7 is a striker placed on a batane not shown in the figure. The protector is designed telescopically and consists of a component 8, which is articulated by a pin 9 connected with a bouncer 10 (Fig. 3).

In the part of the tentacle of the shuttle, overcoming the resistance of the spring 11, the front part moves 12. Part 8 places the stop 13 with notch 14. On the stop 13, a lever with two shoulders 16, 17 is placed on the trunnion 15, and the lever arm 17 ends with a tooth 18. The front end 12 of the telescopic rod is provided with a rotating latch stop 19 and is also a carrier of the tentacle of the shuttle 20, which has a V-shaped cross section. The tentacle of the shuttle 20 has a notch at its front end 21. Between the shoulders are the tentacles of the shuttle,

having a shape V, a cutting device consisting of a fixed blade 22, a movable blade 23 and a clamp 24 (Fig. 4, 5) is placed. A movable cutter 23 with a pinch bar is connected by a rocker 26 placed rotationally in the tentacle of the shuttle 20.

As soon as the weft thread is cut, the impact rod 8-12 is lifted from its rest position (Fig. 3) to the horizontal or almost horizontal position (Fig. 2) under the action of the finder of the thread and the non-illustrated lifter. The tentacle of the shuttle 20 penetrates when the batan approaches the hole 7, and if shuttle 1 takes the correct position, then it also penetrates hole 2 in the wall of the shuttle. At that moment, when the tentacle of the shuttle 20 penetrates into the hole 2, the drummer 7 strikes the latch 19 and pushes it upward so that, upon further movement, it first hits the shoulder 16 of the lever with two shoulders 16, 17 and turns it until it hits a notch 14 of part 8. When the lever arm 16 rotates, the arm 17 also rotates and pushes the rocker arm 26 down from its upper position (Fig. 2) to the lower one. The lifting of the lever 26 is caused by the rotation of the prong 25, and due to this, the cutting knife 23 and the clamping strap 24 are lifted upward (Fig. 4 and 5) and the refining thread 4 located in the notch 21 of the shuttle's tentacle having the shape V is cut off but simultaneously and holding the clamping bar 24.

After a perfect change of the spool, the baton moves back and the protector remains for some time in the horizontal position shown in FIG. 2 or 3, and the thread 4, seized by the clamping bar, is pulled out of the holes 2 and 6. When the batan is not shown in the opposite direction in the opposite direction, the protector returns to its normal position in the same way as the device that moves it upwards under the action weft fork. The tread is lowered to its normal lower position.

(Fig. 6) and when the end of the lever 26 bumps into the fixed bracket 27, this lever is raised upwards so that the movable blade 23 and the clamping bar are lowered from the position shown in FIG. 5, to the lower position corresponding to FIG. 4. When lifting the lever 2, the shoulder 17 of the double-shouldered lever also rises, and the shoulder 16 of it moves forward so that it hits the notch 14 (Fig. 2, b). When lowering the impact rod 8, 12, the tip 4 of the cut weft thread was also pulled down. The tread bar 8, 12, and with it the cutter, remains in its lower position until the next weft break turns on again from the weft fork. If the hook does not take a correct position in the shuttle box, the tentacle head 20 of the shuttle hits the side wall of the shuttle and thus cannot get into the hole 2 of the side wall of the shuttle. The telescopic part 12 presses against the part 8 of the impact rod and the striker 7 cannot turn the latch stop 19, since due to the pressure of the part 12 it cannot act on the latch 19.

The subject matter of the invention.

Claims (3)

1.Protective scissors, consisting of movable and fixed blades, fixed at the end of the tread and actuated by pressing a drum baton, characterized in that the end of the tread rod, consisting of parts 8 and 12, telescopically connected and connected by a spring 11, has V-shaped, and a slit for placing the scissors 22, 23 with the clamp of the thread 24 (Fig. 2). 2. In the device according to claim 1, a device for closing the scissors to cut the thread and clamp its end, characterized in that the lever 16-17, which is rotatable, is used, the vertical arm 16 of which serves to transfer the pressure of the rotary stop 19 when the striker 7 is pressed on it batana, through horizontal shoulder 17 rocker arm 26 for covering the movable blade 23 scissors. 3. In the device according to claim 1, use the device for opening the scissors and clamping when the tread retreats to the rest position, consisting of a bracket 27 mounted on the end of the rocker arm 26.