JPH11107103A - Opening device in loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening device in a loom, hardly damaging a means for fixing a transmission member and a heddle frame, and enabling to reduce the arrangement pitch of the heddle frame. SOLUTION: Screw parts 161, 171 are formed at the upper ends of vertical rods 16, 17 which are transmission members. A height position-adjusting nut 21 and a rock nut 22 are threadedly attached to the screw part 161. A circular engaging groove 211 is formed in the vertically central position of the height position-adjusting nut 21. A pair of holders 24, 25 are disposed in a mutually faced way through the vertical rod 16. The engaging projections 242, 252 of both the holders 24, 25 are engaged with an engaging groove 211. The connecting portion 182 of a heddle 18, the pair of the holders 24, 25, the vertical rod 16 and a plate 30 are fixed to each other with a screw 29 in side a clamp ring 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening device for vertically moving a heald frame by operating a reciprocating drive mechanism.

[0002]

2. Description of the Related Art An opening device for vertically moving a heald frame is disclosed in Japanese Unexamined Patent Publication No.
Japanese Patent Application Laid-Open Nos. 4-20347, 4-240239 and 9-21030.

In the apparatus disclosed in Japanese Patent Application Laid-Open No. 64-20347, a transmission element which is moved up and down by the operation of a reciprocating drive mechanism is sandwiched between a jaw and a male member in a ring of an annular male member. Are fitted to a female member fixed to the heald frame. The vertical movement of the transmission element is transmitted to the heald frame via the male member and the female member. If the tightening of the jaw and the male member to the transmission element is loosened, the mounting position of the female member to the transmission element, that is, the height position of the heald frame can be adjusted.

In the device disclosed in Japanese Patent Application Laid-Open No. 4-240239, a cylindrical sleeve is screwed to a screw-shaped base connected to a vertically movable transmission member, and a side plate is fitted to an annular shoulder of the cylindrical sleeve. Is locked. The cylindrical sleeve is fixed to the base by tightening a lock nut.
The side plate is fixed to the upper vertical member of the heald frame. The vertical movement of the transmission member is transmitted to the heald frame via the cylindrical sleeve and the side plate. By adjusting the screwing position of the cylindrical sleeve with respect to the base, the mounting position of the side plate with respect to the transmission member, that is, the height position of the heald frame can be adjusted.

In the device disclosed in Japanese Patent Application Laid-Open No. Hei 9-21030,
The thread portion of the rod member that is moved up and down is loosely fitted to the iriment, and the elliment is sandwiched and fixed by a pair of upper and lower nuts screwed to the thread portion. The frame of the elliment and the heald frame is fastened and fixed by an annular clamper. The vertical movement of the rod member is transmitted to the heald frame via a pair of nuts and elliment. By adjusting the screwing position of the pair of nuts with respect to the screw portion, the mounting position of the element with respect to the rod member, that is, the height position of the heald frame can be adjusted.

[0006]

However, Japanese Unexamined Patent Publication No.
In the apparatus disclosed in Japanese Patent No. 20347, if there is play at the fitting portion between the male member and the female member, an abnormal sound may be generated or the damage may occur at the fitting portion due to the load accompanying the high-speed vertical movement of the heald frame. I do.

In the device disclosed in Japanese Patent Application Laid-Open No. 4-240239, if there is play at the fitting portion between the annular shoulder portion and the side plate, an abnormal sound is generated at the fitting portion due to the load accompanying the high-speed vertical movement of the heald frame. Or damage. In addition, the load caused by the high-speed vertical movement of the heald frame concentrates on the threaded portion between the cylindrical sleeve and the mouthpiece and the threaded portion between the lock nut and the mouthpiece.
The cylindrical sleeve or lock nut is damaged.

In the device disclosed in Japanese Patent Application Laid-Open No. 9-21030,
The load caused by the high-speed vertical movement of the heald frame concentrates on the screwed portion between the pair of nuts and the screw portion, and the nut or the screw portion is easily damaged. Further, since the annular clamper surrounds the elliment through which the rod member is inserted, the thickness of the clamper in the front-rear direction of the loom increases. When the thickness of the clamper is increased, the arrangement pitch of the heald frames arranged in the front-rear direction of the loom is increased, and the stroke of the up-and-down movement increases as the heald frames on the rear side. If the stroke of the vertical movement of the heald frame becomes large, it becomes difficult to operate the loom at high speed.

SUMMARY OF THE INVENTION It is an object of the present invention to make it difficult for the fixing means between the reciprocating transmission member and the heald frame to be damaged, and to reduce the arrangement pitch of the heald frames.

[0010]

For this purpose, the present invention comprises a fixing means for detachably fixing a transmission member and a heald frame which are reciprocated by the operation of a reciprocating drive mechanism. The invention of claim 1 is directed to an opening device for vertically moving a frame, wherein the first holder is pressed against the transmission member, and the transmission device is pressed against the first holder with the transmission member interposed therebetween. A second holder to be
Pressing means for pressing the pair of holders against the transmitting member, pressing means for sandwiching the first holder between the transmitting member and the heald frame, and pressing the pair of holders in a state where the pressing action of the pressing means is released. Engaging means for engaging the transmission member so as not to drop the holder; and relative position changing means for changing the relative position between the pair of holders and the transmission member in a state in which the pressing action of the pressing means is released. The fixing means provided with the above.

A pair of holders sandwich the transmission member by the pressing action of the pressing means. The reciprocating motion of the transmission member is transmitted to the heald frame via a pair of holders. The load associated with the high-speed reciprocating motion of the heald frame is applied to the pressure-contact portion between the members that are in a pressure-contact relationship, so that the member is unlikely to be damaged by the load.

According to a second aspect of the present invention, there is provided a pressure contact means comprising: a clamp wheel surrounding the heald frame and the transmission member; and a screw threaded through the clamp wheel and in contact with the second holder. Configured.

The pair of holders are pressed against the transmission member by tightening the screws. According to the third aspect of the present invention, the relative position changing means includes a screw portion provided on the transmission member, and a height position adjusting nut screwed to the screw portion, and At least the first holder is movably engaged with the height position adjusting nut.

The first holder follows the screwing movement of the height position adjusting nut, and the height position of the heald frame is adjusted by the screwing movement of the height position adjusting nut. In the invention of claim 4,
The engaging means includes a latching means for latching the first holder on the heald frame, and a binding means for binding the first holder and the second holder to the transmission member.

The pair of holders bundled with the transmission member does not fall off the transmission member.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 1, swing levers 13, 14 are provided inside left and right side frames 11, 12 of the loom.
Are rotatably supported. The swing lever 13 is reciprocated by a reciprocating drive mechanism (not shown). The swing of the swing lever 13 is transmitted to the swing lever 14 via the transmission rod 15, and both swing levers 13 and 14 swing synchronously. Links 3 on swing levers 13 and 14
1 are connected, and a vertical rod 16,
17 is mounted in an upright state. The swing of the swing levers 13 and 14 is converted to the vertical movement of the vertical rods 16 and 17, and the vertical movement of the vertical rods 16 and 17 is
Guided by 20. A heald frame 18 is supported between the vertical rods 16 and 17. The heald frame 18 moves up and down integrally with the vertical rods 16 and 17.

Threads 161 and 171 are formed at the upper ends of the vertical rods 16 and 17. A height position adjusting nut 21 and a lock nut 22 are screwed to the screw portion 161. The height position adjusting nut 21 is fixed to the screw portion 161 by tightening the lock nut 22. An annular locking groove 211 is provided at the upper and lower intermediate portion of the height position adjusting nut 21.
Are formed.

A latch pin 23 is press-fitted into a connecting portion 182 at the upper end of the vertical frame 181 of the heald frame 18, and a first holder 24 is latched on the latch pin 23. On the opposite side of the vertical rod 16 from the first holder 24, a second holder 25 is arranged to face the first holder 24. First holder 24 and second holder 2
5 is bundled with the vertical rod 16 by a pair of elastic rings 26. As shown in FIG. 2, the first holder 2
The holding recess 241,
251 are formed. The holding concave portions 241 and 251 are joined to the lower peripheral surface of the threaded portion 161 of the vertical rod 16.
Locking projections 242 and 252 are formed at the upper end portions of the first holder 24 and the second holder 25. Locking projection 24
2 and 252 are locked in the locking groove 211.

The connecting portion 182, the vertical rod 16, and the pair of holders 24, 25 are surrounded by a square annular clamp wheel 27. The clamp wheel 27 is fixed to the connecting portion 182. A female screw 28 is fixed to the inner surface of the clamp wheel 27. A pair of screw holes 281 are formed in the female screw body 28 that is a part of the clamp wheel 27, and a pair of screws 29 are screwed into the screw holes 281 from the outer surface of the clamp wheel 27. The screw 29 faces the second holder 25, and a plate 3 is provided between the tip of the screw 29 and the second holder 25.
0 is interposed. Connecting portion 182, pair of holders 2
4, 25, the vertical rod 16 and the plate 30 are fixed to each other in the clamp wheel 27 by tightening the screw 29. That is, the first holder 24 and the second holder 25 are pressed against the vertical rod 16 via the holding concave portions 241 and 151,
The first holder 24 is pressed against the connecting portion 182. Board 30
Prevents direct contact between the screw 29 and the second holder 25 to prevent the second holder 25 from being damaged.

The vertical movement of the vertical rod 16 is controlled by the holder 24,
The signal is transmitted to the heald frame 18 via the link 25 and the connecting portion 182. When the screw 29 is loosened, the first holder 24
And, the second holder 25 can be moved up and down with respect to the vertical rod 16. Even when the screw 29 is loosened, the second holder 25 does not fall off because the second holder 25 is bound to the vertical rod 16 by the elastic ring 26. If the tightening of the lock nut 22 is loosened and the height position adjusting nut 21 is screwed and moved, the holders 24 and 25 follow the screwed movement of the height position adjusting nut 21. FIG. 3 shows the screw 29 and the lock nut 2.
2 shows a state where the tightening is loosened.

The tip of the screw 29 is screwed into the screw hole 2 of the female screw body 28.
When the first holder 24 is retracted into the inside 81, the first holder 24 can be removed from the latch pin 23, and the clamp wheel 27 together with the heald frame 18 can be removed upward from the upper end of the vertical rod 16. Even in this state, the pair of holders 24 and 25 are bound and held by the vertical rod 16 by the elastic ring 26.

The clamp wheel 27, the female screw body 28 and the screw 2
9, an engaging means comprising a pair of elastic rings 26 as a latching pin 23 and a bundling means, a screw 161, and a height adjustment nut 2.
A mechanism similar to the relative position changing means including the first and the locking projections 242 and 252 is also provided on the vertical rod 17 side.

In the first embodiment, the following effects can be obtained. (1-1) The reciprocating motion of the vertical rods 16 and 17 as the transmission member is performed by a pair of holders 2 that sandwich the vertical rods 16 and 17.
The light is transmitted to the heald frame 18 via the fourth and fourth gears 25. Heald frame 18
Of the vertical rods 16 and 17 and the holders 16 and 17 between the connecting portion 182 and the first holder 24.
17, the load is applied to the press-contact portion between members having a press-contact relationship with each other, and the load is applied to the height-position adjusting nut 21 and the screw portion 16.
It does not hang on the threaded portion with 1,171. Therefore, the member is hardly damaged by the load. (1-2) The first holder 24 and the second holder 25 are opposed to each other with the vertical rods 16 and 17 interposed therebetween.
It does not surround the entire perimeter of 6,17. Therefore, FIG.
As shown in the figure, the width H of the holders 24 and 25 is
6, 17 can be the same as the diameter D,
The thickness T1 inside 7 can be the same as the diameter D of the vertical rods 16,17. That is, the outer thickness T2 of the clamp wheel 27 can be minimized according to the diameter D of the vertical rods 16 and 17. Reducing the thickness T2 of the clamp wheel 27 reduces the arrangement pitch of the plurality of heald frames 18. (1-3) The first holder 24 and the second holder 25 are engaged with the locking groove 211 against the screwing movement of the height position adjusting nut 21.
And the engagement protrusions 242 and 252.
Since the holders 24 and 25 need only follow the screwing movement of the height position adjusting nut 21 for adjusting the height position of the heald frame 18, the locking groove 211 and the locking protrusion 242,
The fitting accuracy with the 252 does not matter. (1-4) The press-contact means consisting of the screw 29 and the clamp wheel 27 is a simple and simple means for pressing the pair of holders 24, 25 against the vertical rods 16, 17 and pressing the first holder 24 against the connecting portion 182. is there. (1-5) Screws 161, 171 and height position adjusting nut 2
The relative position changing means including the one and the pair of holders 24 and 25 is simple.

In the present invention, as shown in FIG. 4, the second embodiment in which the first holder 183 is formed integrally with the connecting portion 182, or the second holder 32 is locked as shown in FIG. A third embodiment in which the groove 211 is not locked is also possible.

[0026]

As described in detail above, according to the present invention, the transmission member is sandwiched between the pair of opposed holders, and one holder is sandwiched between the transmission member and the heald frame. There is an excellent effect that the fixing means to the frame is hardly damaged and the arrangement pitch of the heald frame can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment and incorporating an enlarged sectional view of a main part.

FIG. 2 is an exploded perspective view of a main part.

FIG. 3 is a partially cutaway perspective view.

FIG. 4 is an enlarged sectional view of a main part showing a second embodiment.

FIG. 5 is an enlarged sectional view of a main part showing a third embodiment.

[Explanation of symbols]

16, 17 ... vertical rods serving as transmission members, 161, 17
DESCRIPTION OF SYMBOLS 1 ... Screw part which comprises relative position change means, 18 ... Heald frame, 21 ... Height position adjustment nut which comprises relative position change means, 23 ... Latch pin as latch means which comprises an engagement means, 24 .., A first holder, 25... A second holder, 26... An elastic ring as a bundling means constituting an engaging means, 27.
8 ... female screw body constituting pressure contact means, 29 ... screw constituting pressure contact means.

Claims (4)

[Claims] An opening device for removably fixing a transmission member and a heald frame which are reciprocated by an operation of a reciprocating drive mechanism, wherein the heald frame is vertically moved by an operation of the reciprocating drive mechanism; A first holder that is pressed against the transmission member, a second holder that is pressed against the transmission member opposite the first holder across the transmission member, and presses the pair of holders against the transmission member. A pressure contact means for sandwiching the first holder between the transmission member and the heald frame; and a pressure contact means for preventing the pair of holders from falling off in a state where the pressure contact action of the pressure contact means is released. A loom comprising the fixing means, comprising: engaging means for engaging; and relative position changing means for changing a relative position between the pair of holders and the transmitting member in a state where the pressing action of the pressing means is released. Definitive opening device. 2. The pressure contact means includes a clamp wheel surrounding the heald frame and the transmission member, and a screw threaded through the clamp wheel and abutting on the second holder. An opening device in the loom according to claim 1. 3. The relative position changing means includes a screw portion provided on the transmitting member, and a height position adjusting nut screwed onto the screw portion, and at least the first of the pair of holders. 3. The shedding device in a loom according to claim 1, wherein said holder is engaged with said height position adjusting nut so as to be able to follow. 4. The engaging means includes a latching means for latching the first holder on the heald frame, and a binding means for binding the first holder and the second holder to the transmission member. Any one of claim 1 and claim 2
Item 7. An opening device in a loom according to Item 6.