JPH0327653B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dobby machine for raising and lowering a heald frame of a loom.

[Conventional technology]

In a loom having a heald frame, the case where the heald frame is raised and lowered by a passive dobby machine will be explained with reference to FIG.

In FIG. 6, 1 is a loom frame, 2 is a heald frame, and 3 is a dobby loom. First, the heald frame 2 has connecting rods 4 at both ends thereof.
The heald frame 2 is suspended so as to be movable up and down, and the heald frame 2 is always held at the position shown by a spring (not shown). On the other hand, a wire 5 is connected to the heald frame 2 and connected to the dobby machine 3 via a guide roller 6, and the dobby machine 3 pulls the wire 5 in the direction of the arrow 7 shown in the figure to resist the force of the spring. The hold frame 2 is moved downward.

A large number of heald frames 2 are provided in the direction of the paper, and warp threads are passed through the heald frames 2. Each heald frame 2 is raised and lowered alternately as appropriate, and the weft thread is inserted into the opening of the warp threads formed between them. Weaving is done by passing it through.

Next, the dobby machine 3 for pulling in the wire 5 will be explained with reference to FIG.

First, a rotatable jack lever 11 is provided in the dobby machine main body 10 to connect the end portion 5a of the wire 5 and to pull the wire 5 in. The jack lever 11 is rotatable about a fixed shaft 12.

A doglegged lever 14 is connected to the jack lever 11 via a lever ratio adjusting arm 13, and the lever 14 is rotatably provided around a fixed shaft 15.

A balk plate 18 having movable hooks 17a and 17b at both ends is connected to this doglegged lever 14 by a pin 16.

On the other hand, there is provided a reciprocating lever 21 that engages with the camshaft 19a of the cam 19 and reciprocates in the direction of the arrow 20 shown in the figure by the rotation of the cam 19, and a drive lever 23 is connected to the tip of the reciprocating lever 21 with a pin 22. Ru. Although the drive lever 23 is not shown, there is a substantially doglegged lever 14 on the dobby machine body 10.
The balk plate 18 is rotatably fixed at the same position as the pin 16, and the pressing pieces 23a and 23b at both ends thereof are provided so as to abut against the back surface of the balk plate 18 on the side opposite to the movable hooks 17a and 17b.

The dobby machine main body 10 includes a holding hook 25 having movable hooks 24a and 24b that engage with the movable hooks 17a and 17b of the balk plate 18, respectively.
a, 25b are provided rotatably around fixed shafts 26a, 26b, respectively.

These holding hooks 25a, 25b are connected to contacts 28a, 28 by springs 27a, 27b, respectively.
b is urged so as to be in constant contact with a card drum 29, which will be described later.

A large number of cards 3 are arranged on the circumferential surface of the card drum 29.
0 is attached to the card 30, and a peg 31 for raising the heald frame 2 explained in FIG. 6 is attached according to the pattern.

To explain this further, first, the holding hook 25
When the pegs 31 are located at positions corresponding to the contacts 28a, 28b of the holding hooks 25a, 25b, the holding hooks 25a, 25
The hook portions 24a and 24b of b are attached to the balk plate 1.
8 movable hooks 17a, 17b. In the figure, the hook portion 24a of the upper holding hook 25a is engaged with the movable hook 17a of the balk plate 18 due to contact between its contact 28a and the peg 31, and the lower holding hook 25b is engaged with the movable hook 17a of the balk plate 18.
Because peg 31 is not installed in the position of
The hook portion 24b is not engaged with the movable hook 17b of the balk plate 18.

In this state, when the reciprocating lever 21 is reciprocated in the direction of the arrow 20 shown in the figure by the cam 19, the drive lever 21
3 is rotated. At this time, when the drive lever 23 is rotated counterclockwise from the illustrated state, the hook portion 24a of the upper holding hook 25a and the movable hook 17a of the balk plate 18 are engaged.
The pin 18a that connects the movable hook 17a of the balk plate 18 is fixed, and the rotational force of the drive lever 23 is transmitted from the pressing force 23b to the balk plate 18, causing the balk plate 18 to move counterclockwise around the pin 18a. Accordingly, the dog-shaped lever 14 connected by the pin 16 is rotated clockwise, and the jack lever 11 is rotated clockwise via the lever ratio adjustment arm 13 to pull in the wire rope 5 and hold the heald. frame 2
(Fig. 6) will be lowered.

Next, when the reciprocating lever 21 moves in the opposite direction to that described above, the lower movable hook 17b of the balk plate 18 comes to the position of the lower holding hook 24b.
As described above, the lower holding hook 25b is in the disengaged state, and the upper holding hook 25a is disengaged, so even if the drive lever 23 is rotated clockwise, both ends of the balk plate 18 are not engaged. Since the movable hooks 17a and 17b are not restrained, they become free, and the heald frame 2 is raised by the force of the spring explained in FIG. 6, and the jack lever 11 and the dogleg lever 14 are moved to the position shown in FIG. It will be returned to. If the rotational position of the card drum 31 does not change as described above, the heald frame 2 is raised and lowered by one reciprocation of the reciprocating lever 21 as described above.

Also, the contact 28b of the lower holding hook 25b
If the peg 31 is inserted in the position shown in FIG.
If the pegs 31 are not located at the positions of the contacts 28a and 28b, the heald frame 2 will remain in the lowered state.

In this way, each card 30 of the card drum 29
Insert the peg 31 into the card drum 2 as appropriate.
By rotating the heald frame 9, the holding hooks 25a and 25b, which determine the elevation of the heald frame 2, are positioned, and it becomes possible to perform plain weaving or patterned weaving using this card information.

[Problem to be solved by the invention]

However, with this card drum 29, there is a problem in that there is little information on the cards 30, making it difficult to weave various patterns, and it is necessary to change the insertion position of the pegs 31 when changing patterns.

The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a dobby machine that can easily perform pattern weaving.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a holding hook that rotates to an active/non-active position to determine whether the heald frame is raised or lowered, and a rotatable action lever that engages with the holding hook. An electromagnetic solenoid is provided close to the operating arm of the action lever and magnetically attracts the operating arm, and an electromagnetic solenoid that swings the action lever to move the operating arm close to and away from the electromagnetic solenoid and a holding hook. It is equipped with an auxiliary cam means that rotates near the working and non-working positions.

[Effect]

According to the above configuration, the electromagnetic solenoid is energized and
By electrically controlling the de-energization, it is possible to instruct the active/non-active position of the holding hook and determine whether the heald frame should be raised or lowered. At this time, the auxiliary cam means swings the action lever, rotates the holding hook close to the operative/non-operative position, and at the same time moves the operating arm of the action lever close to and away from the electromagnetic solenoid, thereby reducing the magnetic force of the electromagnetic solenoid. However, it can be reliably adsorbed and held and has good high-speed response.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings.

In Figures 1 to 3, the jack lever 1
1. Lever ratio adjustment arm 13, doglegged lever 1
4. Balk plate 18, its movable hook 17
The configuration of the reciprocating lever 21 driven by the drive lever 23 and the cam 19 that swings the drive lever 23 is as explained in FIG. 5.

In FIGS. 1 and 2, 35a and 35b are holding hooks for instructing the lifting and lowering of the balk plate 1.
Hook portions 36a, 36b that engage with the movable hooks 17a, 17b of No. 8, and the hook portions 36a, 36
The movable parts 37a and 37b are rotatably mounted on fixed shafts 38a and 38b, respectively. . Springs 39a, 39b are provided between the movable parts 37a, 37b and the hook parts 36a, 36b, and the hook parts 36a, 36b are always connected to the movable parts 37a, 37b.
The stopper pieces 40a and 40b are brought into contact with each other and rotated together. Sliders 42a, 42 are connected to the movable parts 37a, 37b by pins 41a, 41b.
b is connected, and the sliders 42a and 42b are rotatably provided on a fixed shaft 43.
It is slidably engaged with the grooves 45a and 45b of 4a and 44b.

The action levers 44a, 44b are provided with an operating arm 46 made of a magnetic material for rotating the action levers 44a, 44b to working/non-working positions.
a, 46b, and its operating arms 46a, 46
Electromagnetic solenoids 47a and 47b for attracting the operating arms 46a and 46b are arranged opposite to b.

Further, the action levers 44a, 44b are swung by auxiliary cam means. That is, the auxiliary cam means has cam lever parts 48a and 48b, and a spring 4 is inserted between the cam lever parts 48a and 48b.
9 is provided, and an auxiliary cam 50 is also provided.

Further, the electromagnetic solenoids 47a and 47b have a U-shaped core 52 mounted on a mounting base 51,
This core 52 is formed with coils 53, 53 provided on both sides thereof.

In addition, the hook portions 3 of the holding hooks 35a and 35b
Both hook portions 36a, 36b are provided between 6a, 36b.
A spring 54 is provided to urge the hook portions 36a, 36b to rotate toward the non-active position, and stoppers 55a, 55b are provided to restrict the rotation of the hook portions 36a, 36b in the non-active position.

The auxiliary cam 50 is connected to the auxiliary cam 50 via an intermediate gear 57 from a drive gear 56 that is connected to the shaft of the cam 19 that drives the drive lever 21, and rotates in synchronization with the rotation of the cam 19 from a driven gear 58. be done.

Next, the operation of this embodiment will be explained.

First, the support hooks 35a, 35 that determine the lifting/lowering
The hook portions 36a and 36b of b are the balk plate 1.
When the movable hooks 17a and 17b of 8 are in the operating position, the dogleg-shaped lever 1
4 is rotated, the wire 5 is pulled in via the jack lever 11, the heald frame 2 is lowered (or raised), and the hook portions 36a, 36b are
are the movable hooks 17a, 17 of the balk plate 18.
When the heald frame is in the non-operating position in which it is not engaged with b, the heald frame is raised (or lowered) in the opposite manner to the above.

In order to rotate the holding hooks 35a, 35b to the working/non-working position, the holding hooks 35a,
Action levers 44a, 4 that rotate 35b
The energization of the electromagnetic solenoids 47a, 47b corresponding to the operating arms 46a, 46b of the 4b may be controlled by a program according to the pattern weave.

That is, as shown in FIG.
When 7a is energized, the action lever 44a
Due to the magnetic force of the solenoid 47a, the operating arm 46a is attracted and held at the tip of the core 52 of the solenoid 47a, and accordingly, the slider 42 is moved from the groove 45a of the action lever 44a.
a and the pin 41a, the movable portion 37a of the holding hook 35a is rotated from the non-working position shown by the solid line in the figure to the working position shown by the two-dot chain line, and at the same time, the hook part 36a is also moved by the spring 39a to the non-working position shown by the solid line in the drawing. It is rotated from the position to the operating position indicated by the two-dot chain line, and is brought into a state where it can engage with the movable hook 17a of the balk plate 18. In this case, the hook portion 36
Since a is supported by a spring 39a and can be moved to a non-active position, even if it collides with the movable hook 17a of the balk plate 18, it can escape and engage.

In addition, if the solenoid 47a is not energized, the hook portion 35a of the holding hook 35a is held by the spring 5.
At the same time, the movable portion 37a is rotated via the spring 37a, and the operating arm 46a of the action lever 44a is separated from the solenoid 47a.

Operation arm 46 of this action lever 36a
The rotation range θ of a is set to a small angle (for example, 3 degrees) because the attraction force of the electromagnetic solenoid 47a is limited. However, in order to more reliably attract the operating arm 46a when the solenoid 47a is energized, By pushing down the cam lever part 48a slightly at 50 degrees of rotation and mechanically biasing the operating arm 46a so that it approaches the angle α solenoid 47a side from the solid line position, the relatively small capacity electromagnetic solenoid 47a can be used. Then, adsorption becomes possible. The rotation of the action lever 44a by this auxiliary cam 50 is caused by the movement of the hook portion 36a of the holding hook 35a from the movable hook 1.
7a, that is, when the hook 17a in FIG. 3 is at the frontmost end, the movable hook 17
The operating arm 6a is set to a position where there is a clearance between the engagement surface of the solenoid 47a and the engagement surface of the hook portion 36a, and the operating arm 6a is as close to the front end of the core 52 of the solenoid 47a as possible. .

The above description has been made using the upper holding hook 35a as an example, but the same applies to the lower holding hook 35b.

That is, when the solenoid 47a is energized, the holding hook 35b is rotated to the operative position, and when the solenoid 47a is not energized, it is set to the non-operative position. Further, the auxiliary cam 50 rotates the operating portion 46b of the action lever 44 closer to the solenoid 47b.

In the above, the electromagnetic solenoids 47a, 47b
If both holding hooks 35a, 3 are energized, both holding hooks 35a, 3
5b is in the operating position, and the heald frame 2 remains lowered during one revolution of the cam 19, and remains raised if both are de-energized. Moreover, if either one is energized, the heald frame 2 will move up and down with one rotation of the cam 19.

These solenoids 47a and 47b are connected to the number sequence (8
cam 1 depending on the pattern to be woven.
Each solenoid in the solenoid group in each row is controlled ON and OFF in synchronization with the rotation of 9. The ON/OFF control of this solenoid can be controlled by storing pattern information in advance on an IC card or magnetic card.

Next, this will be explained with reference to FIG.

First, in FIG. 4, the loom frame 1 has the following:
A loom electronic control device 60 is provided to drive and control electric and electronic components of the loom, and a tissue card reader 6 inputs command information to the electronic control device 60.
1 is connected. This reading device 61 is a card 6
3 and inputs it to the electronic control device 60, control information from the loom electronic control device 60 is input, and the weaving machine is controlled according to the information on the inserted card 63. In addition, each solenoid of the above-mentioned dobby machine 62
ON/OFF control.

On the other hand, the card 63, first the unmemorized card 63a.
is stored in the fabric structure storage device 64, and by operating the joint part 65 of this storage device 64, the fabric information is stored as ON/OFF information of each solenoid according to the pick of the weft yarn, and various texture cards 63 are stored. , if this is installed on the reading device 61 of each loom as appropriate, each loom will be able to read
According to the card information, each dobby machine 61 moves up and down the heald frame 2 to perform weaving.

In the embodiment described above, the solenoids 47a,
47b is energized, the holding hooks 35a, 35b are held in the active position, and when the power is not energized, the holding hooks 35a, 35b are held in the non-active position by the spring 54. However, it is also possible to control both positions with a solenoid. good.

Further, although the heald frame 2 is lowered when the holding hooks 35a and 35b are in the active position, it may be raised. Furthermore, although the example of passive dobby has been explained, active dobby may also be used.

In addition, the holding hooks 35a and 35b are connected to the solenoid 47a and the solenoid 47a through the action levers 44a and 44b.
47b, but the holding hook 35
a, 35b may be directly rotated by solenoids 47a, 47b.

〔Effect of the invention〕

As is clear from the above explanation, the present invention exhibits the following excellent effects.

(1) Since the holding hook is set to the active or non-active position by a solenoid, the conventional peg and card are not required.

(2) The magnetic force of the electromagnetic solenoid attracts and holds the operating arm of the swinging action lever, allowing the holding hook to be held in the active and non-active positions, resulting in excellent high-speed response.

(3) Weaving can be performed by controlling the electromagnetic solenoid ON and OFF, and the pattern weaving can be easily controlled using an IC card and changes can be made easily.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, FIG. 3 is a diagram explaining the operation of the present invention, and FIG.
A schematic diagram showing an example of control using an IC card, FIG. 5 is a sectional view of a conventional dobby machine, and FIG. 6 is a diagram showing an example of a loom. In the figure, 35a, 35b are holding hooks, 44a,
44b is an action lever, 46a and 46b are operating arms, and 47a and 47b are electromagnetic solenoids.

Claims (1)

[Claims] 1. A holding hook that rotates to the working/non-working position to determine the raising and lowering of the heald frame, a rotatable action lever that engages with the holding hook, and a lever that is close to the operating arm of the action lever. an electromagnetic solenoid that magnetically attracts the operating arm; and an auxiliary cam that swings the action lever to move the operating arm close to and away from the electromagnetic solenoid and rotates the holding hook near the active/non-active position. A dobby machine characterized by comprising means.