JPH0616936Y2 - Warp shedding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a warp shedding device in a jacquard machine.

[Conventional technology]

As a warp shedding device, there is known a device in which a horizontal needle is selectively moved depending on the presence or absence of perforation in a pattern paper, and a vertical needle that intersects with a stationary horizontal needle is hooked on a knife and raised. However, this device has a problem that a large amount of pattern paper is required for weaving a high-quality woven fabric, and that it needs to be installed at a high position in order to keep the inclination angle of the threading small when weaving a wide woven fabric. .

On the other hand, instead of the pattern paper, we also proposed an opening structure that controls the horizontal needle based on the electric signal of the woven pattern and an opening structure that directly controls the vertical needle based on the electric signal of the woven pattern without using the pattern paper or the horizontal needle. However, the structure is generally complicated and there are problems in stability and reliability.

[Problems to be solved by the invention]

The purpose of the present invention is simple structure, excellent stability and reliability,
Another object is to provide a warp shedding device that can be installed at a low position.

[Technical means for solving problems]

The above object can be achieved by the present invention. That is, the warp shedding device according to the present invention includes (a) a vertical needle that is provided with an engaging portion on the upper part and is capable of moving up and down in conjunction with each warp,
(b) Elevating body provided on the base so as to be able to ascend and descend above the vertical needle,
(c) The lower portion is provided with an engaged portion that can be connected to the engaging portion of the vertical needle,
An oscillating body provided on the lifting body corresponding to each vertical needle so that it can oscillate in a vertical plane, and To (e) a cam that pushes the engaged portion of the rocking body to an engageable angle that is connected to the engaging portion of the vertical needle, and (e) is provided on the lifting body corresponding to each rocking body, and It is composed of an electromagnetic attracting body that receives an electric signal of the fabric pattern when it is pressed and is selectively excited, and holds the corresponding oscillating body at an engageable angle even after the pressing of the oscillating body is released by the cam. The vertical needle connected to the oscillating body corresponding to the electromagnetic suction body is controlled to be moved up and down by the lifting body.

[Function of device]

In the above structure, first, the cam is rotated to the operating position to press all the swinging bodies, and swing them all to the engageable angle at the same time. When a woven pattern electric signal is input to each electromagnetic attracting body in that state, the excited electromagnetic attracting body attracts the corresponding oscillating body, and the unexcited electromagnetic attracting body does not attract the corresponding oscillating body.

When the cam is returned to the original position and the above-mentioned pressing of the rocking body is released, the rocking body which is not sucked returns to the initial angle, but the sucked rocking body is held at the engageable angle.

Then, when the lifting / lowering body is raised to a predetermined position, all the rocking bodies and the electromagnetic attracting body also rise together with it, but since the attracted rocking body is held at the engageable angle, it corresponds to that. The vertical needle ascends in a state of being connected to the rocking body through the engaging portions and the engaged portions of both, and a predetermined selective opening movement is performed. There is no limitation on the drive source of the lifting body.

Finally, when the ascending / descending body is lowered to the original position together with the oscillating body and the electromagnetic attraction body, the oscillating body connected to the vertical needle disengages its engaged portion and the engaging portion of the vertical needle. Then, like the other rocking bodies, they return to the initial angles. It should be noted that the previously excited electromagnetic attracting body may be demagnetized at an appropriate time from the ascending / descending of the lifting / lowering body.

If the lifting and lowering body is driven by a power source other than the power source of the loom and the various motions of the loom are synchronized with the lifting and lowering motion of the lifting and lowering body, the warp opening and closing speeds can be freely controlled. . For example, if the descending speed of the lifting / lowering body is made slower than the ascending speed or the descending speed of the lifting / lowering body is set to a slight speed just before the stop, the heddle and the swaying of the thread can be prevented.
Further, it is preferable to support the cam on the lifting body because the rocking body, the electromagnetic attraction body, and the cam can be integrally handled by the lifting body.

〔Example〕

FIG. 1 is a side view of an essential part of an embodiment of the present invention, in which a large number of vertical needles (1) are closely contacted with each other corresponding to each warp (not shown) in a loom (2). Is provided in the state,
An inverted U-shaped hook (3) as an engaging portion is provided at its upper end.

The elevating body (4) is provided above the vertical needle (1) by being screwed into a ball screw screw (6) vertically supported by the base (5), and the elevating drive motor transmission (7) is provided. It is provided at the lower end of the ball screw (6).

An inverted L-shaped rocking hook needle (8) as a rocking body is in close contact with the vertical needle (1) so as to be rockable in a vertical plane via a lateral pivot (9) in correspondence with each vertical needle (1). Supported by the lifting body (4),
Normally, it is held at an angle (initial angle) shown by a chain line, that is, at a position slightly inclined from the vertical position. Each swing hook needle (8) has an annular hook (10) as an engaged portion at the lower end, and a mild steel strip (11) in the lateral direction at the upper end.
Is stuck. Each rocking hook needle (8) has a pivot (9)
The lengths of the upper and lower parts are different from each other in the axial direction, and they are different from each other in the upper part from the wound pivot portion (12).
Note that, conversely to the above, the upper end of the vertical needle (1) may have an annular hook structure, and the lower end of the swinging hook needle (8) may have an inverted U-shaped hook structure.

The rotating shaft (13) is laterally supported by the lifting body (4) between each row of the swinging hook needles (8), and the cam (14) is eccentrically placed on each rotating shaft (13). The respective rotary shafts are meshed with each other so as to be synchronously rotatable at each end via a gear device (not shown), and are connected to a common rotary drive motor (15) provided on the lifting body (4). They are connected via a suitable transmission (not shown). Cam (14)
It has a rotary shaft (1
Swing hook needle (8) when rotated 180 degrees with 3)
Is pressed to an angle (engageable angle) where the annular hook (10) and the inverted U-shaped hook (3) of the vertical needle (1) are connected, that is, to a substantially vertical position. A stopper (16) is provided on the lifting body (4) along its substantially vertical position to prevent excessive swing of the swing hook needle (8).

Further, an electromagnet (17) as an electromagnetic attracting body is provided on the lifting body (4) above each rocking hook needle (8), and each electromagnet (17) is selectively excited by a textile pattern electric signal. . The electromagnet (17) excited when the cam (14) presses the rocking hook needle (8) attracts the corresponding mild steel piece (11) of the rocking hook needle (8). After that, when the cam (14) is rotated 180 degrees, the pressing of the swing hook needle (8) by the cam (14) is released, and accordingly,
The rocking hook needle (8) corresponding to the non-excited electromagnet (17) returns to the initial angle, but the excited electromagnet (1
The swing hook needle (8) corresponding to 7) is held at the engageable angle. Each electromagnet (17) is attached to each rocking hook needle (8).
Is provided in the upper and lower stages so that it can be arranged corresponding to the above, and the long and short swing hook needles (8) as described above are used to enable the upper and lower stages to be arranged.

When the lifting body (4) is lifted by the lifting drive motor transmission (7), the rocking hook needle (8) held at the engageable angle corresponds to the vertical needle (1) and each annular hook (10).
And the inverted U-shaped hook (3) is completely connected, and the connected vertical needle (1) is pulled up integrally with the swing hook needle (8) to perform a predetermined opening movement.
The previously excited electromagnet (17) has the rocking hook needle (8).
Is demagnetized at an appropriate time after the complete connection with the corresponding vertical needle (1).

When the lifting body (4) is lowered to its original position, the annular hook (10) of the rocking hook needle (8) and the inverted U-shaped hook (3) of the vertical needle (1) are disengaged and their rocking is performed. The hook needle (8) also returns to the initial angle, and the opening operation as described above can be started again.

[Effect of device]

As described above, the warp shedding device according to the present invention is configured to control the vertical needle through the oscillator corresponding to the electromagnetic attracting body that is selectively excited based on the electric signal of the fabric pattern. , The structure is simple and excellent in stability and reliability, the horizontal needle is not required, and the vertical needle can be freely arranged according to the type and width of the fabric, so that the threading is arranged in a substantially vertical state. In addition, the device itself can be installed in a low position, and it can be moved or added in an array block shape of the rocking body and the electromagnetic suction body according to the free arrangement of the vertical needles. It has an advantage that it can be easily made and can be adapted to changes in the type and width of the fabric.

In addition, a structure in which the descending speed of the lifting body is slower than the rising speed, or the descending speed of the lifting body is set to a slight speed just before the stop is a fabric which has a good texture while preventing the heddle and the threading. Enables weaving.

[Brief description of drawings]

FIG. 1 is a side view of an essential part of an embodiment of the present invention. (Explanation of main symbols) 1 ... Vertical needle, 2 ... Loom, 3 ... Inverted U-shaped hook (engagement part), 4 ... Elevator, 5 ... Base, 8 ... Swing hook needle (Oscillator), 10 ... Annular hook (engaged part), 14 ...
… Cam, 17 …… Electromagnet (electromagnetic attractor)

Claims (6)

[Scope of utility model registration request] 1. A vertical needle which is provided with (a) an engaging portion at an upper portion and is capable of moving up and down in association with each warp, and (b) An elevating body which is provided above a vertical needle and is vertically movable on a base. , (C) An oscillating body that is provided on the lifting body corresponding to each vertical needle so that it can swing in a vertical plane and has an engaged portion that can be connected to the engaging portion of the vertical needle in the lower part, (d) A cam that is rotatably provided adjacent to the rocking body on a lifting body or a base and presses the rocking body from an initial angle to an engageable angle at which an engaged portion of the rocking body is connected to an engaging portion of a vertical needle. , And (e) are provided on the lifting body corresponding to each oscillating body, and when the cam is pressed by the oscillating body, a woven pattern electric signal is input to be selectively excited and the corresponding oscillating body is moved by the cam. The vertical needle, which is composed of an electromagnetic attracting body that holds the engaging angle even after the pressing is released, is connected to the rocking body corresponding to the electromagnetic attracting body excited by the electric signal of the woven pattern by the lifting body. Warp shedding device being characterized in that so as to elevation control Te. 2. The warp shedding device according to claim 1, wherein the engaging portion of the vertical needle and the engaged portion of the oscillating body consist of one and the other of the inverted U-shaped hook and the annular hook. . 3. The warp shedding device according to claim 1, wherein the descending speed of the elevating body is slower than the ascending speed. 4. The warp shedding device according to claim 1, wherein the descending speed of the elevating body is set to a very small speed just before stopping. 5. The warp shedding device according to claim 1, wherein the oscillating body is in a substantially vertical position at an engageable angle thereof. 6. The warp shedding device according to claim 1, wherein a cam is provided on the lifting body.