JPS62110941A - Dobby loom shedding control device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a warp shedding control device for a dobby loom, and in particular to a control device for controlling the warp shedding of a dobby loom, and in particular for selectively operating an electromagnet by a control signal 11 from a computer, thereby controlling the vertical movement of the warp. Controlling double-acting dobby loom shedding system? Regarding the IIl device.

[Conventional technology]

The warp shedding control device of the two-acting double-acting dobby loom, as shown in Fig. 4, is such that when the hook 2 is caught on the knife 2, the associated heald frame 3 is lifted, and the other heald frames return to their original positions. A shed is formed between the warp threads which are left in place and passed through both healds. In this way, hook 1 to knife 2 or hook I.
In order to select the correct word or not, a pattern paper as shown in Fig. 5 is used. The patterned paper is made by punching through holes 4 in a resin film 5, which indicate the vertical positions of the weft-heavy warp corresponding to the woven structure by the presence or absence of holes, and the corresponding heald frame is located at the position of the through holes. It is designed to be lifted.

[Problem that the invention seeks to solve]

In such a system using patterned paper, if the weaving structure becomes complicated, the length of the patterned paper becomes enormous, making its preparation, maintenance, and management difficult.

Moreover, pattern paper is a consumable item and has the disadvantage that it cannot withstand long-term use.

In order to solve this drawback, for example, Japanese Patent Laid-Open No. 60-717
No. 32 discloses a 4A system in which a solenoid is attached to a position facing each of the pressure needles, and a control signal is given to the solenoid from a computer to control the movement of the pressure needles. However, this publication does not give any suggestion as to the mechanical mechanism for realizing this, and remains merely an idea.

(Means for Solving the Problems) The present invention aims to solve the problems of the prior art and provide a novel dobby mechanism using electromagnets.

That is, the present invention applies a preprogrammed excitation signal to an electromagnet in accordance with the cycle of the shedding operation of the loom, and controls the heald frame through the command member that moves up and down in accordance with the cycle by the attraction and repulsion operation of the electromagnet. In the double-arm mechanism, a double-arm lever is provided that can freely rotate back and forth to cross the ascending and descending path of the command member about a fulcrum, and the command member is moved to the dual-arm lever by the attraction and repulsion action of the electromagnet. This is a shedding control device for a dobby loom, characterized in that the shedding control device selectively occupies either a position that obstructs the upper bound of the dobby loom or a position that allows it.

The present invention can be applied not only to a double-acting dobby mechanism but also to a rotary dobby mechanism.

According to the present invention, it is possible to obtain a highly reliable control device for a dobby mechanism using an electromagnet.

〔Example〕

FIG. 1 shows an example in which the present invention is applied to the above-mentioned hafta sled double dobby mechanism. The control VT position of the present invention is the hook 11
12 and a correspondingly provided knife 13.14 is selected by the action of a command member 15.16 that moves up and down, and finally the healds attached via wire ropes 17, 18 It consists of controlling the vertical movement of a frame (not shown), and the principle is the same as that of the prior art mentioned in the introduction. The control member 15.16 has a supporting rod 19.20 attached to its upper part, and the control member 15.16 is connected to the rod 9,
20 extends upwardly through a hole in the temporary guide 21,22. Stop plate 2 installed in the middle of lot 19.20
3. A spring 25 is installed between 24 and the lower guide plate 21.
．． 26 is installed and always urges the rod upward. The stop plates 23 and 24 have yl
The lowering push-down member 27.28 engages from above and thus the lot 19.20 and therefore the command member 15.1.
6 are lowered together by the downward movement of the push-down members 27, 28, and when this pressure is released, they are raised by the biasing force of the springs 25, 26.

Above the upper guide plate 22 is a groove 19.
.

Predetermined openings 29 are located at positions corresponding to the tips of 20, respectively.
．． 11 movement regulating plate 31 having 30 is installed. Above the regulating plate 31, there is a support shaft 32 corresponding to each opening.
．． Double-arm lever 34.35 that can be rotated around 33 is +C
Electromagnets 36.
37 controls its swinging attitude. Details of this portion will be explained with reference to enlarged views shown in FIGS. 2 and 3. Although FIG. 2 shows only one set of members on the left side of FIG. 1, the same applies to the right side members. The electromagnet 36 has a coil 40 wound around it so that different magnetic poles are generated at both ends 38 and 39 of the yoke, and furthermore, the two ends are located on opposite sides of the support shaft 32 of the double-arm lever 34. is set up.

At both the upper and lower parts of the dual-arm lever 34 facing this magnetic pole,
Permanent magnet pieces 41 and 42 are attached so that magnetic poles of the same polarity (in this example, S poles) are exposed to the outside. The lower end of the double-arm lever 34 is connected to the opening 29 of the swing regulation +ff131.
The opening 29 opens when it swings around the support shaft 32.
It is designed to be able to move across the entirety of 111.

The axis of the supporting slot 19 passes through the right side area of the frontage 29, so that it is located below the double-arm lever 34◇
: When t is positioned iξ to the left, the upper end of the boating rod 19 can rise into the opening 29 as the push-down member 27 rises. On the other hand, when the lower end of the double-arm lever 34 swings to the right, the supporting rod 19
This prevents it from rising. That is, depending on the swinging position of the double-arm lever 34, the supporting rod 19
, it will be understood that the upward movement of the command member 15 coupled thereto is thus controlled.

The movement of this double-armed lever 34 is regulated by the interaction between the magnet pieces 41, 42 attached thereto and the electromagnet 36. As shown, the magnet pieces 41 and 42 are each S
When installed with the pole facing outward, the coil 40 of the electromagnet 36 facing this has an N pole at the upper end 38 and an N pole at the lower end 3.
9 is energized so that the south pole is generated, the two-arm lever 34 rotates clockwise because the opposite polarities attract each other and the same polarities repel each other, and as shown in FIG. located on the left side of the On the other hand, when the electromagnet 36 is excited with the opposite magnetism, the double-arm lever 34 rotates counterclockwise.
As shown in FIG. 3, its lower end is located on the right side of the opening.

Depending on the position of the double-arm lever 34, the command member 1
The sabotage groove throat 19 of No. 5 is the push-off member 27.
(Figure 2)
or be prevented from rising (Figure 31).

As a result, the hook ti supported by the command member 15 leaves or engages with the action area of the knife 13 which swings left and right (FIG. 2) or engages with it (FIG. 3).

The distance between the magnet piece 41, 42 of the double-arm lever 34 and the magnetic pole of the electromagnet 36 is such that when the two are closest to each other, that is, when the lower end of the double-arm lever 34 touches either side of the opening 29, It is set so that a slight gap exists between the facing magnetic poles. This is to enable the two magnetic poles to separate immediately when the current in the coil 40 is cut off.

〔Effect of the invention〕

As described above, according to the device of the present invention, instead of directly attracting and supporting the supporting rod with an electromagnet, or releasing it, a lightweight double-armed lever is separately provided, and this lever is attracted with an electromagnet to move the supporting rod. By controlling the movement of the dobby mechanism and restricting its movement within a certain range using a swing regulating plate, it has become possible to obtain more reliable results compared to conventional dobby mechanisms that use solenoids and electromagnets.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of the dobby mechanism of the present invention, FIGS. 2 and 3 are enlarged views showing the main parts of the present invention, FIG. 4 is a schematic diagram of a double-acting dobby mechanism, and FIG. 5 is a conventional It is a top view of the patterned paper that was used. 11.12...Hook 13.14...Knife 15.16...Command member 19.20...Supporting rod 21.22...
・Guide quick reverse 29, :30... Opening 31... Swing regulating plate 34.35... Double arm lever 3G, 3T... Electromagnet 41.42... Magnet piece

Claims (1)

[Claims] 1. A method in which a preprogrammed excitation signal is applied to an electromagnet in accordance with the cycle of the shedding operation of the loom, and the heald frame is controlled by the attraction and repulsion operation of the electromagnet through a command member that moves up and down in accordance with the cycle. In the dobby mechanism, a double-arm lever is provided that can freely rotate back and forth so as to cross the ascending and descending path of the command member about a fulcrum, and the double-arm lever prevents the command member from rising due to the attraction and repulsion action of the electromagnet. A shedding control device for a dobby loom, characterized in that the shedding control device selectively occupies either a position or a position that allows this.