JPS6241984Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dropper needle elevating device in a jacquard mechanism.

The conventional jia card mechanism lowers the dropper needle opposite to the perforation pattern of the patterned paper, and sequentially interlocks the subsequent mechanisms to finally select the opening of the warp threads of the loom and create a pattern according to the perforation pattern of the patterned paper. It is used as a control mechanism for weaving.

To explain the Jia card mechanism using a diagram, a dropper needle 1 holds a poker 2 so as to be movable in the horizontal direction, and this poker 2 always swings from side to side in synchronization with the rotation timing of the loom. The horizontal needle 5 is pushed to the right by the guide plate 4 of the pusher 3, which moves the horizontal needle 5 to the right.
The mechanism after the vertical needle (not shown) is operated in conjunction with this, and this is followed by the operation that finally controls the shedding of the warp threads of the loom. The figure shows a state where the dropper needle 1 is about to move the poker 2 to the right side by the guide plate 4 of the pusher 3. Here, the dropper needle 1 located at a position corresponding to the perforated part of the above-mentioned patterned paper (not shown) falls into the perforated part and causes the poker 2 held thereto to fall a certain distance.
4', the poker 2 is not pushed even by the left and right swinging of the pusher 3.
In this case, of course, the horizontal hand 5 is not pushed to the right either.

On the contrary, the poker 2 held by the dropper needle 1 corresponding to the position other than the perforation part of the pattern paper is moved by the guide plates 4, 4' of the pusher 3 which swings from side to side.
4'' to the right, and in this case, of course, the horizontal needle 5 is also pushed to the right.The above explains the operation of the jia card mechanism when using pattern paper, but if the weave pattern is changed In this case, it is first necessary to perform a complicated process of replacing the patterned paper, and in the case of trial weaving various patterns, it takes a considerable amount of time from the punching of the patterned paper to the actual completion of weaving. It was hot.

For this reason, in recent years it has been proposed to develop an electronic jacquard, which uses a computer to send electrical signals from a magnetic tape by modifying the jiaquard mechanism described above and thereby speeds up the production of prototypes of woven patterns, without using paper patterns. has been done. However, most of the conventional methods involve controlling the horizontal needle 5, and according to this method, an acting force of 300 to 500 g is usually required to apply a force to move the horizontal needle 5 to the right.
Therefore, the shape of the solenoid that receives the electrical signal also becomes large. However, since the arrangement pitch of the horizontal needles 5 is small, it is difficult to install a solenoid in direct correspondence with the needle pitch. In order to avoid this, a system is adopted in which the right end of the horizontal needle 5 and the movable part of the solenoid are connected with steel wire, wire, etc., and the horizontal needle 5 is moved.

This method has the disadvantage that fatigue occurs due to repeated reciprocating motion at both ends of the connecting wire, such as steel wire or steel wire, at the connection to the movable part of the horizontal needle solenoid, and the connecting wire may break early. Furthermore, changes occur due to expansion and contraction of the length of the connecting line over time, making it difficult to accurately transmit the moving distance of the solenoid movable portion to the moving distance of the horizontal needle 5. Another drawback is that, when a solenoid is arranged to correspond to several hundred to several hundred horizontal needles 5, the control unit becomes large-scale and difficult to handle.

In view of these drawbacks, the present invention provides a device which is extremely compact and yet allows accurate transmission of action.

That is, instead of the method of moving the horizontal needle 5 as described above, the present invention uses a method of controlling the dropper needle 1 itself. In the normal Jia card mechanism, the dropper needle 1
The weight of is 5 including the weight burden of Poker 2.
It is extremely lightweight, weighing approximately 10g. Therefore, if the solenoid has a generated torque of at least about 10 g or more, it is possible to push up or suck the dropper needle 1. In the method of moving the horizontal needle 5 described above, a solenoid generating torque of about 300 to 500 g is required, so a solenoid with a large external shape must be used, but according to the present invention, the torque generated by the solenoid is at least about 10 g. 4 to 5 mm as it is possible to use a solenoid with a generated torque of more than 4 to 5 mm.
It becomes an ultra-compact device that can be arranged in a positional relationship that fully corresponds to the dropper needles 1 arranged in pitch. This is the major feature of this invention.

Further, embodiments of the present invention will be described in detail based on the drawings.

A micro solenoid 8 is attached to the upper part of the dropper needle 1 through a guide plate 7 having a guide hole 6 for guiding the needle 1 and concentrically with the guide hole 6.
Fixed ultra-small solenoid mounting plates 10 and 11 are arranged so that the movable part 9 of The spring 14 acts upwardly through the
A selector plate 16 having a support rod 15 fixed to
is located. Of course, the needle 1, guide hole 12, and support rod 15 are arranged concentrically, and the lower end of the dropper needle is always placed above the support rod.

When the electric signal is received by the micro solenoid 8, the movable part 9 is lowered and the dropper needle 1 is lowered through the guide plate 7. The lowered dropper needle 1 moves the poker 2 it holds onto the guide plates 4 and 4' of the pusher 3, which swings from side to side.
Since the horizontal needle 5 is lowered during this period, it is not pushed by the guide plate, and the horizontal needle 5 is also not pushed to the right.

On the other hand, since the dropper needle 1 corresponding to the micro solenoid 8 that does not receive a signal does not descend, the poker 2 held by the guide plates 4, 4', 4'' of the pusher 3 is pushed to the right. As a result, the horizontal hand 5 is also pushed to the right.

Dropper needle 1 pushed down
pushes down the support rod 15 through the guide hole 12 at its lower part, and then pushes up the support rod 15 by the spring 14, and the dropper needle 1 is restored to its original position. Of course, this operation occurs when the pusher 3 begins to swing to the right, the dropper needle 1 descends, the pusher 3 begins to swing to the left, the spring 14 pushes up the support rod 15, and the dropper needle returns to its original position. In order to restore the position, the reception timing to each micro solenoid 8 needs to be set in synchronization with the timing of left and right swinging of the pusher 3. Conversely, the movable part 9 of the ultra-compact solenoid 8 receives the electrical signal and moves downward, bringing the poker 2 held by the dropper needle 1 to a position where it is pushed by the guide plates 4, 4' of the pusher 3. Good too. In this case, the poker corresponding to the micro solenoid 8 that received the signal is pushed to the right, and the horizontal needle 5 is also pushed to the right. In this case, the poker corresponding to the micro solenoid 8 that does not receive a signal is the pusher 3.
Since the horizontal needle 5 is set between the guide plates 4, 4', 4'' from the beginning, it is not pushed to the right side. By dividing the solenoid into separate units, even if a solenoid breaks down, it can be easily replaced, which is advantageous in terms of maintenance.

As explained above, according to the device of the present invention, since the downward motion of the movable part of the solenoid is directly transmitted to the dropper needle, the motion is transmitted reliably, and the electrical signal is converted into mechanical motion using a compact device. It is possible to do this, and there is no need to make extensive modifications to the conventional Jia card mechanism, so it is convenient.

[Brief explanation of the drawing]

The figure is a partially longitudinal side view showing an example of the device according to the present invention, in which 1 is a dropper needle, 2 is a poker, 3 is a pusher, 4, 4',
4'' is a pusher guide plate, 5 is a horizontal needle, 6 is a dropper needle guide hole, 7 is a guide plate with a guide hole, 8 is a small solenoid, 9 is a solenoid moving part, 10 and 11 are small solenoid mounting plates ,1
2 is a dropper needle guide hole, 13 is a selector plate having a guide hole, 14 is a spring, 15 is a support rod to which a spring is fixed, and 16 is a selector plate having a support rod to which a spring is fixed.

Claims (1)

[Scope of utility model registration request] The movable part of the solenoid is placed concentrically on the upper end of each dropper needle via a plate having a guide hole for the needle, and the lower end of the needle is
A selector plate having a needle guide hole is placed on a support rod having a needle return spring concentrically with the guide hole, and the solenoid movable part is raised and lowered by an electric signal, and the droplet is moved in conjunction with this. A drop par needle elevating device in a jacquard mechanism which raises and lowers a par needle.