JPH031492Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Purpose of the invention Industrial application field The invention is capable of weaving a tapestry when used in conjunction with a device for planting drop pins in the warp shedding in an automatic loom. If the present invention is used alone in a loom, it will be a device that can extend the width of the fabric and prevent it from curling.

Conventional technology The rotation of the crankshaft 19 of a loom is controlled by a cam 20.
As a result, the transmission is transmitted to the middle of the cam lever 21 whose one end is the fulcrum, and the vertical rod 22 connected to the other end of the cam lever 21 performs vertical movement and transmits this to the catch lever 23, which rotates the fulcrum of the catch lever 23. The pivot shaft 24 is freely adjustable. A swing lever 25 similar to the catch lever 23 is protruded from the other end of the swing shaft 24. At the tip of the swing lever 25, an operating rod 26 is provided in an inverted L shape with the intersection point of the L shape as a fulcrum. A further fulcrum is provided at the front, which is inserted into a shaft 28 that protrudes from the fuselage, and a string 29 hanging down from the other end of the operating rod 26 is connected to one end of a lever-shaped lever located at the bottom of the lower part 8, and the lever There was a structure in which the other end and the lower part of the folding part 8 were connected, and the upper end of the parting part 8 was pulled by a spring 30.

Problems to be Solved by the Invention The conventional device uses the convex ridges of the cam 20 to transmit motion via various levers and the long L-shaped actuating rod 26, so small vibrations of the cam cause the various levers to move. Each time it passes, it is amplified and becomes larger, and the operating rod 2
6 caused various problems such as warp thread breakage and loud noise due to the large vibration.

Such a structure is complicated and the equipment becomes expensive;
The installation work is complicated and requires a lot of installation space, so it has various drawbacks such as getting in the way of other equipment and work.

(b) Means for solving the structural problems of the invention An operating cam 2 of a desired shape fixed to a bottom shaft 1 of a loom is symmetrical, and is in contact with a bearing 3 below.

The operating lever 5 is a screw-shaped member having a fulcrum 4 approximately in the middle, one end of which has a spring 7, and the other end of the spring 7 is attached to, for example, a drop box 31 of the aircraft body. The wiring 9 is tied to the other end of 5,
The other end of the wiring 9 is tied to the lower end of the hook 8 which is located on the other end of the operating lever 5 and holds down or lifts the warp thread 32, and the upper end of the hook 8 is pulled by the spring 10 released from the machine body. has been done. Near the spring 7, a horizontal locking rod (6) is projected from the operating lever 5, and in the drawing, two operating levers 5 are provided, and the locking rod 6 is bridged between the two operating levers 5. .

The bearing 3 is rotatably attached to a horizontally protruding shaft approximately in the center between the fulcrum 4 of the operating lever 5 and the locking rod 6.

One end of the horizontal lever shaft 11 located at the bottom of the operating lever 5 is attached to a bracket 1 that protrudes from the fuselage.
An upright catch lever 14 is further protruded from the rotating shaft 13, and a substantially semicircular notch 16 is bored near the tip of the catch lever 14. The aircraft is a device towed by springs 15.

Function Since the present invention has the above structure, the catch lever 14 is towed by the spring 15 released from the drop box 31 when there is a command for the pattern in the gear guard machine 17, or vice versa. , the locking rod 6 is located in the notch recess 1 of the catch lever 14.
It's out of 6.

Then, the operating lever 5, which is integrated with the locking rod 6, is pulled by the spring 7 attached to the tip, and the left side in the drawing is lifted from the fulcrum 4, and the right side is lowered, the wiring 9 is pulled, and the lowering lever 8 is directed downward. Then, the warp threads 32 are opened downward.

When the left side of the actuating lever 5 goes up, the convex part of the actuating cam 2 fixed to the rotating bottom shaft 1 pushes the bearing 3 downward, and the left side of the actuating lever 5 goes down and the right side goes up. Fuse 8 returns to normal.

When there is a command from the gear guard machine 17 or when there is no command, the string 18 is pulled and the lever shaft 1
1 is lifted, and the catch lever 14 fixed substantially at right angles to the catch lever 14 is tilted forward as shown by the dotted line by the rotating shaft 13, and the locking rod 6, which has descended while being pressed by the operating cam 2, is accommodated in the notch recess 16. death,
The actuating cam 2 is stopped at a position where the influence of rotation is not transmitted to the bearing 3, and the lowering plate 8 is not moved up and down.

(C) Effect The present invention has the above-mentioned structure and function, and the warp threads that constitute the fabric are inserted through the folding sections 8, and certain warp threads are lifted or pressed by the folding sections 8 facing upward or downward. A waveform with a change in the height of the warp yarn position is formed between the warp yarn that moves in the opposite direction or the warp yarn that does not move.

If this movement of folding 8 is performed after the weft threads are struck between the warp openings and before the reed is driven in, the weft threads will be bent into the shape according to the vertical waveform arrangement of the warp threads, and will be pulled into the shuttle like conventional weft threads. I don't get overly tense and tense more than necessary.

Therefore, since the weft threads are woven with just the right amount of slack, there are no "squeaks" in the fabric after weaving, and the width can be adjusted beautifully.

If the device of the present invention is used in combination with a planting pin, it is possible to weave a tapestry on an automatic loom. Since the motion is taken from the recess of the operating cam 2 rather than the bottom shaft 1 of the rotational speed, there is little vibration and the noise of the mechanical device can be suppressed to a low level, and this device is extremely suitable as a weft yarn loosening device for a loom.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of the present invention, FIG. 2 is a side view of the same invention, and FIG. 3 is a perspective view of the conventional device. 1...bottom shaft, 2...operating cam, 3
... Bearing, 4 ... Fulcrum, 5 ... Operating lever, 6 ... Locking rod, 7 ... Spring, 8 ... Lowering, 9
... Wiring, 10 ... Spring, 11 ... Lever shaft, 12 ... Bracket, 13 ... Rotating shaft, 14
...Catch lever, 15 ... Spring, 16 ... Notch recess, 17 ... Jia guard machine, 18 ... String, 1
9...Crankshaft, 20...Cam, 21...
...Cam lever, 22...Vertical rod, 23...
Catching lever, 24... Rocking shaft, 25... Swing lever, 26... Operating rod, 27... Fulcrum, 2
8... shaft, 29... string, 30... spring, 31...
Shizu box, 32... warp.

Claims (1)

[Scope of utility model registration request] A bearing 3 that engages with an operating cam 2 of a desired shape provided on the bottom shaft 1 is attached to a rod-shaped operating lever 5 that has a fulcrum 4 approximately near the center.
One end of the actuating lever 5 has a horizontal locking rod 6 protruding from it, and is connected to the fuselage by a spring 7 and is towed, and the other end of the actuating lever 5 is connected to the lower part of the lower part 8. The wiring 9 is released, and the lower part 8 is connected to one end of a spring 10 whose other end is fixed to a suitable position on the aircraft body and hangs down, and one end of a horizontal lever shaft 11 located at the bottom of the operating lever 5 is , held by a bracket 12 protruding from the machine base and fixed substantially at right angles to the end of a rotatable shaft 13;
A catch lever 14 is mounted approximately vertically above the rotating shaft 13.
is projected, and the upper end of the catch lever 14 is connected to the spring 1.
5 and is connected to the aircraft and towed, and the spring 1
5. A weft thread loosening device for a loom, characterized in that it has a cutout recess 16 under the attachment part, and the other end of the lever shaft 11 is connected to a jia guard machine 17 with a string 18.