JPS6114267B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foil yarn transfer machine for performing weft insertion work of foil yarns.

In the weft insertion work of the foil yarn, with the beating movement of the loom temporarily stopped, a single foil yarn is sent to a weft guiding spatula installed in the reed by a foil yarn transfer machine, and the weft thread is inserted into the shuttle of the spatula. It is pulled into the shed by moving in the direction of travel, and driven in by resuming the beating motion. In this type of weft insertion work, the foil threads to be inserted are placed in parallel in large numbers in a thread holding device installed above the side of the loom, facing in the left-right direction of the loom, and one end of the foil threads is placed in parallel from the thread holding device to the loom side. The foil threads are held in a protruding state, and each foil thread is sequentially fed in accordance with its order to a fixed position, that is, a picking position, by a feeding device such as a roller feeding device. In order to weft the foil yarn in such a state, a foil yarn transfer machine that transfers the foil yarn to the loom is placed between the loom and the thread holding device, and the foil yarn transfer machine is equipped with a thread picker at the tip. A rotatable shaft with an attached arm is arranged in the front and back direction of the loom, and one-half of the shaft is
A transfer mechanism is constructed in which the arm is tilted from a standing state to a right angle toward the loom by repeated rotations to the right and left for four revolutions, and then returned from the tilted state to the standing state.

In such a foil thread transfer machine, when the arm is in an upright state, a thread picker attached to the tip of the arm picks up the foil thread that is at the picking position in the thread holding device.
After the tip of the foil thread protruding part is picked, tilt the arm toward the loom by turning 1/4 of the shaft in the right (or left) direction, and the foil thread of the thread holding device will be pulled out. When the pulled-out foil yarn is rotated around the axis and the arm is tilted at a right angle, the tip (lower end) of the foil yarn becomes vertical and is inserted into the hole of the weft guiding spatula. The thread is fed in, and the thread is transferred to the spatula by releasing the thread pincher.After this foil thread transfer, the arm is returned to the upright position by rotating the shaft 1/4 of the way in the opposite direction. , the next foil thread being fed to the picking position in the thread holding device is picked.

There is no problem as long as the tip of the foil thread held by the thread holding device is always straight, but it may bend up or down depending on the properties of the foil thread itself, the weather, and other conditions. In this case, the upper and lower gripping members of the thread pincher, which pivots and returns to the picking position, collide with the bent tip of the foil thread, causing the thread pincher to snap back to the foil thread. There was a problem that made it impossible to reliably pick the seeds.

In order to solve this problem, it is possible to adopt a thread pincher with a larger knob, but in such a case, the disadvantage is that the thread pincher's picking member and the device that operates the picking member must be larger. There is.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a foil thread transfer machine that can reliably and accurately perform the thread picking action of a thread picker without increasing the size of the thread picker even when the foil thread is bent. The purpose is to

Next, the present invention will be explained based on embodiments shown in the drawings.

A rotating shaft 11 is supported on the underframe 20 in the front-rear direction of the loom, and a thread pincher comprising a thread pinching fixed part 3 and a thread pinching movable part 4 is attached to a rotating arm 15 fixed to the tip of the rotating shaft 11. 16 are provided. A reciprocating rod 14 that reciprocates in the left-right direction of the loom is pivotally connected to the rotary arm 15 by an appropriate drive device, and when the rod 14 is actuated rightward in the figure, the rotation shaft 11 is rotated. By rotating in the right direction, the rotating arm 15 is tilted from the upright state toward the loom, and the thread picker 16 is moved to the position of the foil thread guiding spatula 12 on the loom. When the rotating arm 15 is in the upright state, the thread picker 16 is located at a position where it can pick up the small curved portion of the foil thread 10 following the curved tip. When the operating rod 14 is operated to the left in the figure, the rotating shaft 11 is rotated to the left, thereby returning the rotating arm 15 from the tilted state to the upright state.

Further, the rotary shaft 11 is supported so as to be movable in the longitudinal direction of the loom, and a push spring 13 applies a movement action to the foil yarn 10 in a certain direction. A longitudinal position setting device 1 is provided at the rear end of the rotating shaft 11, and this longitudinal position setting device 1 is constructed by attaching a sliding roller to the tip of an arm perpendicular to the rotating shaft 11.

The front-rear position setting device 1 sets the position of the thread picker 16 in the front-rear direction, and the underframe 20 is formed so as to position the thread picker 16 in the picking position when the rotating arm 15 is in the upright state. It comes into contact with a receiving surface 2 on the rear side. The longitudinal position setting device 1 is controlled by a retraction mechanism to set the longitudinal position of the thread pincher 16. That is, the longitudinal position setting device 1
In the tilting operation of step 5, the thread picker 16 moves from the receiving surface 2 onto a surface that guides the thread picker 16 so as not to change its position in the front-rear direction, and in the raising action of the rotating arm 15, the thread picker 16 moves from the receiving surface 2 onto a surface that guides the thread picker 16 so as not to change its position in the front-rear direction. After moving onto the sloped surface that guides the loom's longitudinal position gradually away from the picking position,
It is controlled by a retraction mechanism that returns to the receiving surface 2.

Next, this retraction mechanism will be explained.

The longitudinal position setting device 1 is moved by the tilting operation of the rotating arm 15.
The underframe 2 on the side where it moves away from the receiving surface 2
A smooth surface 17 is formed on the rear side of the 0, following the receiving surface 2 and at the same level as the receiving surface, and a retractor 6A is provided. The retractor 6A has a vane plate 6 of an appropriate length facing a part of the smooth surface 17, and one end thereof is connected to the receiving surface 2 and the smooth surface 17.
A supporting portion 19 is located at the boundary between the blade plate 6 and the sliding surface 17, is provided at an appropriate distance from the sliding surface 17, and is provided with the other end inclined so as to be in contact with the sliding surface 17, and protrudes from one side end of the wing plate 6. A push spring 7 is rotatably supported on the support shaft 5 and maintains the inclined state of the wing plate 6.
It is equipped with the following.

The one shown in FIG. 4 is another retraction mechanism, in which a wing plate 6 (described later) is attached to the rear side of the underframe 20 on the side where the longitudinal position setting device 1 moves away from the receiving surface 2 by the tilting operation of the rotating arm 15. recessed part 18 in which the
A smooth surface 17 is formed at the same level as the receiving surface 2 following the concave portion 18, and a retractor 6 is formed.
B is provided.

The retractor 6B has a tilting rod 8 located between the receiving surface 2 and the concave portion 18, the base end of which is pivotally connected to the underframe 20, and the distal end thereof protruding an appropriate length above the receiving surface 2. A vane plate 6 of an appropriate length placed opposite the concave portion 18 is connected in a flexible manner by pivotally connecting the tip of the tilting rod 8 and one side end of the vane plate 6. The other end is inclined so as to be in contact with the bottom surface of the concave portion 18, and is provided with a tension spring 9 for maintaining the inclined state of the vane plate 6. In the state where the vane plate 6 is buried, the front surface of the vane plate 6 is at the same level as the receiving surface 2.

When the rotating arm 15 is in the upright state, the front-rear position setting device 1 is in contact with the receiving surface 2, so the thread picker 16 is located at the picking position of the foil thread 10 and picks up the portion of the foil thread 10 with a small bend. Pick. Thereafter, by operating the reciprocating rod 14 in the right direction in the figure, the rotating arm 1
5 tilts toward the loom and the thread picker 16 moves to the position of the foil yarn guiding spatula 12 on the loom, the setting device 1 moves from the receiving surface 2 to the smooth surface 17 along the trajectory shown by the broken line. Further, the blade 6 is pushed up against the push spring 7, and the thread picker 16 moves along the smooth surface 17 while passing behind the blade 6, so that the thread picker 16 can move the spatula 12 without changing its longitudinal position. It moves into position. However, the thread picker 16
After the foil thread 10 is delivered to the spatula 12 by releasing the thread pick by the thread pick fixed part 3 and the thread pick movable part 4 in , the reciprocating rod 14 is rotated by operating to the left in the figure. When the arm 15 returns from the tilted state to the upright state, the setting device 1 moves from the sliding surface 17 to the inclined front surface of the vane 6, which has returned to its original inclined state by the action of the push spring 7. Since it will ride on and migrate, thread pincher 1
6 returns so that its longitudinal position moves away from the picking position, and the setting device 1
When you return to the receiving surface 2 from the slanted front surface of
The thread picker 16 is again located in its original picking position.

In the case of the retraction mechanism shown in FIG.
When the loom is tilted toward the loom from a standing state, the longitudinal position setting device 1 in contact with the receiving surface 2 pushes down the tilting rod 8 against the tension spring 9 and is connected to the tilting rod 8 in a flexible manner. The wing plate 6 that is
Buried in 8. Therefore, the setting device 1 moves from the receiving surface 2 to the smooth surface 17 while passing through the front surface of the wing plate 6 along the trajectory shown by the broken line, so the thread pincher 16 changes its position in the front and back direction. Zuni Hera 12
Move to. Then, when the rotating arm 15 returns from the tilted state to the upright state, the setting device 1 moves from the sliding surface 17 by the action of the tension spring 9 to incline the vane plate 6 back to its original tilted state. As the thread picker 16 rides on the front surface of the handle, the thread picker 16 returns so that its longitudinal position moves away from the pick position, and the thread picker 1
When the yarn returns from the inclined front surface of the vane 6 to the receiving surface 2, the thread picker 16 is again located in its original picking position.

As described above, according to the present invention, in the return process after the foil thread is delivered to the guiding spatula, the thread picker returns while retreating, so that the thread picker can pick up the bent tip of the foil thread. Return to a rearward position away from the picking position without colliding the parts, and then move forward and return to the picking position again. Therefore, the thread picking action of the thread picker is always reliably exerted, and even if the thread is bent at its tip, it can be picked without any problem. In addition, this invention has the effect that the thread picker returns while automatically retracting during the return process of the thread picker, so no other equipment or power is required, and the structure is therefore very simple. .

[Brief explanation of the drawing]

Figure 1 is a perspective view, Figure 2 is a plan view of the retraction mechanism,
3 is a perspective view of a vane in the retraction mechanism shown in FIG. 2, and FIG. 4 is a partially cutaway plan view of another retraction mechanism. 1... Fore-and-aft position setting device, 2... Reception surface, 6... Vane plate, 6A, 6B... Retractor, 7... Push spring, 8... Tilt rod, 9... Tension spring, 10... Foil thread, 11... Rotating shaft , 13... Pressing spring, 14... Reciprocating rod, 15
...Rotating arm, 16...Thread picker, 17...Smooth surface, 18...
Recessed portion, 19... Support portion, 20... Underframe.

Claims (1)

[Claims] 1. A thread picker 16 is provided on a rotating arm 15 fixed to the tip of a rotating shaft 11 arranged in the longitudinal direction of the loom, and the rotating arm 15 is tilted from an upright state toward the loom, and the tilting In a foil yarn transfer machine equipped with a means for repeatedly rotating the rotating shaft 11 in the right and left directions to return it from a state to an upright state, the rotating shaft 11 is supported movably in the longitudinal direction of the loom and is supported by a push spring 13. Therefore, the action of moving the foil thread 10 in a certain direction is provided, and a longitudinal position setting device 1 is provided at the rear end of the rotating shaft 11, and the longitudinal position setting device 1 is set when the rotating arm 15 is in the upright state. When the rotating arm 15 is tilted, the longitudinal position setting device 1 moves the thread pincher 16 from the receiving surface 2 in the loom longitudinal direction. The thread picker 16 is moved on a guiding surface so as not to change its position, and when the rotating arm 15 is raised, the longitudinal position setting device 1 picks the position of the thread picker 16 in the longitudinal direction of the loom from the surface. This foil thread transfer machine is characterized in that it moves onto an inclined surface that guides the foil thread away from the position and then returns to the receiving surface 2.