JPH0723570B2 - Dobby loom shedding control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a warp yarn shed control device for a dobby loom, and in particular, a control signal from a computer selectively activates an electromagnet to control the vertical movement of the warp yarn. The present invention relates to an opening control device for a double-acting dobby loom.

[Conventional technology]

As shown in FIG. 4, when the hook 1 is caught by the knife 2, the warp shed frame 3 associated therewith is lifted, and the warp shed frame 3 of the hattersley type double-action dobby loom is lifted.
The other heddle frames are left as they are, and a shed is formed between the warp threads inserted in both healds.
As described above, in order to select whether the hook 1 is hooked on the knife 2 or not, the pattern paper as shown in FIG. 5 is used. The pattern paper is obtained by punching through holes 4 in the resin film 5 in which the upper and lower positions of the warp yarns corresponding to the weave structure are indicated by the presence or absence of holes, and the heald frame corresponding to the position of the through holes is formed. It is designed to be lifted.

[Problems to be solved by the invention]

When the weaving structure becomes complicated in such a method using a paper pattern, the length of the paper pattern becomes enormous and the preparation, maintenance and management thereof become difficult. Moreover, the crest paper is a consumable item and has a drawback that it cannot withstand long-term use.

In order to solve this drawback, for example, in Japanese Unexamined Patent Publication No. Sho 60-71732, a solenoid is attached at a position facing each pressure needle, and a control signal is given from the computer to the solenoid to control the movement of the pressure needle. A device is disclosed. However, this publication has no suggestion about the mechanical mechanism for embodying this, and is merely an idea.

[Means for solving problems]

The present invention solves the problems of the prior art and provides a novel dobby mechanism using an electromagnet.

According to the present invention, the loom comprises a command member that moves up and down in synchronization with the cycle of opening operation of the loom to control the heddle frame, and the control mechanism that controls the up and down movement of the command member moves up and down the command member about a fulcrum. A double-arm lever that can be reciprocally rotated so as to traverse the path, and an electromagnet that causes a rotary motion of the dual-arm lever by electromagnetic attraction and repulsion are included. A loom that controls the lifting and lowering of the heddle frame is given to the electromagnets in synchronization with the cycle, and the attraction and repulsion action of the electromagnets causes the dual-arm lever to selectively occupy either a position that prevents the command member from rising or a position that allows this. In the opening device, the characteristic point is that the electromagnet is individually and immovably installed for each double-arm lever.

The present invention can be applied not only to the double-action dobby mechanism but also to the 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 Hattersley type dobby mechanism. The control device of the present invention includes hooks 11 and 12
And the engagement with the knives 13 and 14 provided corresponding to this,
It consists of controlling the lifting movement of a heddle frame (not shown) which is selected by the action of vertically moving command members 15 and 16 and is finally attached via wire ropes 17 and 18. This principle is stated in the heading. It is the same as the conventional technology. Command member
The supporting rods 19 and 20 are attached to the upper portions of the rods 15 and 16, and the rods 19 and 20 extend upward through the holes of the guide plates 21 and 22. Between the stopper plates 23, 24 provided in the middle of the rods 19, 20 and the lower guide plate 21, a spring 25,
26 is installed and always pushes the rod upward. Push-down members 27, 28 that move up and down in synchronization with the shedding motion of the loom are engaged with the stopper plates 23, 24 from above, and therefore the rods 19,
Therefore, the command members 15 and 16 are both lowered by the downward movement of the push-down members 27 and 28, and are raised by the urging force of the springs 25 and 26 when the pushing is released. Above the upper guide plate 22, a rocking restricting plate 31 having openings 29, 30 of a predetermined width is installed at positions corresponding to the tips of the rods 19, 20, respectively. Two arm levers 34 and 35, which are rotatable about supporting shafts 32 and 33, are installed above the restriction plate 31 so as to correspond to the respective openings, and electromagnets 36 and 37 are installed on the sides thereof, respectively. The swinging posture is controlled by. Details of this portion will be described 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 one on the right side. The electromagnet 36 has a coil 40 wound so that different magnetic poles are generated at both ends 38, 39 of the yoke, and further, the both ends are installed so as to be positioned on the opposite sides of the spindle 32 of the double-arm lever 34. ing. Permanent magnet pieces 41, 42 are attached to both upper and lower portions of the double-arm lever 34 facing the magnetic pole so that the magnetic poles of the same polarity (S pole in this example) are exposed to the outside. The lower end of the double-arm lever 34 has an opening 29 of the rocking regulation plate 31.
When it swings around the support shaft 32, it can move across the entire width of the opening 29.

The axis of the supporting rod 19 passes through the right side region of the opening 29, and therefore, when the lower end of the double-arm lever 34 is located on the left, the upper end of the supporting rod 19 is increased as the push-down member 27 is raised. It may rise into the opening 29. On the other hand, when the lower end of the double-arm lever 34 is swinging to the right, the supporting rod 19 is blocked by this and prevented from rising. That is, it will be understood that the swinging position of the double arm lever 34 controls the lifting movement of the supporting rod 19, and thus of the command member 15 connected thereto.

The movement of the double arm lever 34 is restricted by the interaction between the magnet pieces 41, 42 attached to the double arm lever 34 and the electromagnet 36.
As shown in the drawing, when the magnet pieces 41 and 42 are installed with their S poles facing outward, the coil 40 of the electromagnet 36 facing them has an N pole at the upper end 38 and an S pole at the lower end 39. When energized as described above, due to the property that different polarities are attracted to each other and the same polarities repel each other, the double-arm lever 34 rotates clockwise, and its lower end is located on the left cotton of the opening as shown in FIG. . on the other hand,
When the electromagnet 36 is excited to the opposite magnetism, the double arm lever
34 rotates counterclockwise, and its lower end is located on the right side surface of the opening as shown in FIG.

Depending on the position of the double arm lever 34, the supporting rod 19 of the command member 15 continues to rise as the push-down member 27 rises (FIG. 2) or is prevented from rising (third). Figure). As a result, the hook 11 supported by the command member 15 is disengaged from the working area of the knife 13 that swings left and right (FIG. 2) or is engaged (third part).
Figure).

The distance between the magnet pieces 41 and 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 is in contact with either side surface of the opening 29, It is set so that there is a slight gap between the facing magnetic poles. This is so that the magnetic poles can be separated immediately when the current of the coil 40 is cut off.

〔The invention's effect〕

As described above, according to the device of the present invention, a lightweight dual-arm lever is separately provided without adsorbing and supporting the supporting rod directly by the electromagnet or releasing the supporting rod. Since the movement is controlled and the movement is limited to a certain range by the swing regulating plate, it is possible to obtain a reliable and reliable result as compared with the conventional Dobby mechanism using a solenoid or an electromagnet. According to the present invention, the electromagnets 36, 37 are fixedly provided for the respective dual-arm levers 34, 35, and the internal dual-arm levers 34, 35 only selectively rotate according to the tissue. The electric wiring to the electromagnets 36 and 37 is not strained or loosened when the needle selection operation is performed, and the cause of failure such as disconnection can be eliminated. Further, since it is not necessary to move the control mechanism including the electromagnets 36 and 37 for needle selection, the configuration is simple and inexpensive, and the constraint due to the weight of the control mechanism at the time of high speed rotation is reduced, and high-speed weaving operation To be realized.

[Brief description of drawings]

 FIG. 1 is a schematic side view of a dobby mechanism of the present invention, FIGS. 2 and 3 are enlarged views showing an essential part of the present invention, FIG. 4 is a schematic diagram of a double-acting dobby mechanism, and FIG. FIG. 6 is a plan view of a used pattern paper. 11,12 …… Hook 13,14 …… Knife 15,16 …… Command member 19,20 …… Supporting rod 21,22 …… Guide plate 29,30 …… Opening 31 …… Swing restriction plate 34,35… … Double arm lever 36,37 …… Electromagnet 41,42 …… Magnet piece

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masaaki Sato Inventor, Masaaki Sato 4-chome, Sunadabashi, Higashi-ku, Aichi Prefecture 60, Mitsubishi Rayon Co., Ltd. Incorporated Yamada Dobby (72) Inventor Yasuhide Takase 35 Shimoshinda, Tamano, Onishi City, Aichi Stock Company Yamada Dobby (72) Inventor Koichi Akatsuka 3-8 Mita, Minato-ku, Tokyo (72) Inventor, Toshiaki Watanabe 3-3-8 Mita, Minato-ku, Tokyo Inside Kodaisha's Communication Equipment Factory (56) Reference: JP 59-21741 (JP, A) Sho 59-64980 (JP, U)

Claims (1)

[Claims] 1. A command member for controlling a heddle frame by raising and lowering in accordance with a cycle of opening operation of a loom, and a control mechanism for controlling the raising and lowering of the command member includes a raising and lowering path of the instruction member around a fulcrum. With a double-armed lever that can be reciprocally rotated so as to cross the
An electromagnet that causes a rotational movement of the dual-arm lever by electromagnetic attraction and repulsion, and a preprogrammed excitation signal is applied to the electromagnet in synchronization with the cycle of the opening operation, and the dual-arm is generated by the attraction and repulsion of the electromagnet. In a shedding device of a loom that controls the lever to selectively occupy a position that prevents the command member from rising or a position that allows the command member to rise, the electromagnets are individually fixed for each double-arm lever. A shedding device for a loom, which is installed in a loom.