JPH10130986A - Opening apparatus in weaving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the adjusting workability of vertical movement amount of a heddle frame driven by an opening driving motor. SOLUTION: An adjusting pin 26 is rotatably held on a supporting body 24 fixed to the projecting tip ends of power shafts 201 to 231 of opening driving motors 20-23. The central part of the adjusting pin 26 is equipped with an eccentric cam 261. A guide groove 245 is formed on the face of the supporting body 24. A shaft body 27 provided with a shaft part 271 is engaged with the guide groove 245 and held. The eccentric cam 261 is engaged with an engaging piece 274 on the shaft body 27. A lock screw 29 is fixed to the supporting body 24. The adjusting pin 26 and the lock screw 29 can be operated in the same direction.

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 individually driving a heald frame by an opening drive motor independent of a loom drive motor.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. Hei 7-133545 discloses an opening device in which one heald frame and one dedicated drive motor are connected one-to-one, and a plurality of heald frames are separately driven by a dedicated motor. It has been disclosed. In this conventional device, a crank mechanism is interposed between the rocker arm and the drive motor, and one-way rotational movement of the drive motor is converted into reciprocating rotation of the rocker arm via the crank mechanism. The reciprocating rotation of the rocker arm moves the heald frame up and down.

In the apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 7-133545, the amount of opening is adjusted by adjusting the position of a connecting portion between a crank disk having a spiral groove and a link of a crank mechanism, and this adjustment is performed. Is performed so as to rotate.

[0004]

However, since the rotational position of the drive motor changes in this manner of adjustment, it is necessary to reset the initial rotational position of the drive motor. Moreover, the adjustment of the connection position on the spiral groove itself is very difficult.

In the apparatus disclosed in Japanese Utility Model Laid-Open Publication No. 1-1114684, a rotating body is fixed to a drive shaft interlocking with the main shaft of the loom, and an adjusting body is attached to the rotating body so as to be movable in the radial direction of the rotating body. ing. A crank pin is projected from the rotating body, and rotation of the crank pin is transmitted to the heald frame via a connecting rod. If the rotating body is attached to the output shaft of the opening drive motor, the vertical movement amount of the heald frame driven by the opening drive motor, that is, the opening amount can be adjusted. However, an adjusting bolt and a lock bolt for adjusting the opening amount are mounted at positions in different directions with respect to the rotating body. Therefore, the operation of the lock bolt and the adjustment operation of the adjustment bolt must be performed from different directions, and the operability of the opening amount adjustment is very poor in a loom in which a plurality of opening drive motors must be compactly arranged.

An object of the present invention is to provide an opening device for a loom which is excellent in workability for adjusting the amount of vertical movement of a heald frame driven by an opening drive motor.

[0007]

For this purpose, according to the first aspect of the present invention, a support member attached to an output shaft of an aperture drive motor for individually driving a heald frame is slid in a radial direction of the output shaft. A shaft attached to the support so as to be displaceable, mounting position changing means for changing a mounting position of the shaft with respect to the support, and fixing for fixing the shaft to the support so that the position can be changed; Means for driving the heald frame by turning the shaft with the rotation of the output shaft, and the operating part of the mounting position changing means and the operating part of the fixing means in the same direction. Was placed.

If the operation of changing the mounting position changing means is performed in a state in which the fixing action of the fixing means is released, the mounting position of the shaft body with respect to the support in the radial direction of the output shaft is changed. This change changes the turning radius of the shaft body, and changes the opening amount. Since both the operation part of the mounting position changing means and the operation part of the fixing means are arranged in the same direction,
Adjustment of the opening amount is easy.

According to the second aspect of the present invention, the mounting position changing means comprises a cam, an adjusting pin mounted on the support, and a slide provided on the shaft and engaged with the cam. The sliding direction of the slide body is the radial direction of the output shaft, and a lock screw that is screwed to the support and fastens and fixes the slide body to the support is the fixing means.

If the adjusting pin is rotated while the locking screw is released, the rotation of the cam slides the slide body in the radial direction of the output shaft, and the shaft body moves relative to the support shaft. The mounting position in the radial direction is changed.

According to the third aspect of the present invention, the slide body has an engagement piece, and the support has an accommodation slit for accommodating the cam of the adjustment pin and the engagement piece,
The fixing action of the lock screw is such that the support is elastically deformed so as to narrow the gap between the housing slits, and the slide body is clamped and fixed to the support by the elastic deformation.

When the fixing action of the lock screw is released, the support returns elastically so as to widen the gap between the receiving slits,
The slide is released from the clamping action of the support. If the adjustment pin is rotated in this released state, the rotation of the cam slides the slide body in the radial direction of the output shaft, and the shaft body changes the mounting position of the output shaft in the radial direction with respect to the support. Is done.

According to a fourth aspect of the present invention, the output shafts of the opening drive motors are arranged in parallel with each other, and the operation part of the mounting position changing means and the operation part of the fixing means are arranged on the side of the output shaft. did.

The operating portion of the mounting position changing means of the plurality of opening drive motors and the operating portion of the fixing means can rotate the output shaft and all come in the same direction, and all the heald frames from this same direction. Can be adjusted.

[0015]

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 of the swing lever 13 is transmitted to the swing lever 14 via the transmission rod 15, and the swing levers 13 and 14 swing in synchronization. Connecting rods 16 and 17 are attached to the swing levers 13 and 14 in an upright state. A plurality of heald frames 18 (16 in the present embodiment) are supported by a pair of connecting rods 16 and 17, respectively. The swing of the swing levers 13 and 14 is converted into vertical movement of the heald frame 18 via the connecting rods 16 and 17.

A drive box 19 is mounted on the outer surface of the side frame 11. The drive box 19 is open at the top and side. As shown in FIG. 2, a front wall 191 of the drive box 19 has eight opening drive motors 2.
0, 21 are attached, and eight opening drive motors 22, 23 are also attached to the rear wall 192. The opening drive motors 20 and 22 are arranged obliquely along the side openings, and the opening drive motors 21 and 23 are arranged more obliquely on the side frame 11 side than the opening drive motors 20 and 22. The opening drive motors 20 to 23 rotate only in one direction. Output shafts 201 and 202 of opening drive motors 20 to 23
11, 221 and 231 penetrate the wall of the drive box 19 and protrude into the drive box 19. Output shaft 201 of aperture drive motor 20 and output shaft 22 of aperture drive motor 22
1 and the output shaft 21 of the aperture drive motor 21
1 and the output shaft 231 of the opening drive motor 23 are opposed to each other.

Output shaft 20 protruding into drive box 19
A support 24 is fastened and fixed to the protruding tips 1 to 231 by screws 25. The output shafts 201 to 231 are fitted in shaft holes 241 of the support 24. As shown in FIG. 3, a receiving slit 243 is formed in the prism portion 242 of the support 24 so as to be continuous with the shaft hole 241. The accommodation slit 243 includes a wide portion and a narrow portion, and the narrow portion is connected to the shaft hole 241. As shown in FIG.
An adjustment pin 26 is rotatably supported by 4. FIG.
As shown in FIG. 7, the pin hole 244 through which the adjustment pin 26 is inserted is formed so as to cross the wide portion of the accommodation slit 243 from one side surface of the prism portion 242. An eccentric cam 261 is provided at the center of the adjustment pin 26. Eccentric cam 26
1 is rotatably arranged in the wide portion of the accommodation slit 243.

A trapezoidal guide groove 2 is provided on the front surface of the support 24.
45 are formed. The guide groove 245 crosses the shaft hole 241 and is provided along the radial direction of the output shafts 201 to 231. The shaft 27 is fitted and supported in the guide groove 245. The shaft body 27 includes a shaft portion 271 and a bolt 28
Stopper flange 27 fixed to shaft portion 271 by
2, a flat plate-like slide body 273 integrally formed with the shaft 271, and a bifurcated engagement piece 274 formed integrally with the slide body 273. The slide body 273 is fitted in the guide groove 245, and the engagement piece 274 is inserted into the housing slit 243. As shown by the solid line in FIG. 2 and the chain line in FIG. 3, the eccentric cam 261 is engaged with the engagement piece 274.

A lock screw 29 is inserted into one side surface of the prism portion 242 of the support 24, and the tip of the lock screw 29 crosses the narrow portion of the housing slit 243 and is screwed to the wall surface of the narrow portion. Have been. The support 24 is elastically deformed by tightening the lock screw 29 so as to narrow the width of the housing slit 243, and the slide 273 is clamped and fixed in the guide groove 245 by this elastic deformation. In this pinched and fixed state, the center axis C1 of the shaft portion 271 does not coincide with the center axis C2 of the output shafts 201 to 231.
The shaft portion 271 turns with the rotation of the shaft 31. When the fixing operation of the lock screw 29 is released, the support body 24 elastically returns so as to widen the gap of the accommodation slit 243, and the slide body 2
73 is released from the clamping action of the support 24. Shaft 27
A crank rod 30 is fitted and connected to 1.

As shown in FIG. 3, an adjustment scale 31 is provided on one side surface of the prism portion 242, and the adjustment pin 26 is provided.
A pointer 262 is provided at the pin head of the. Output shaft 20
The rotation of 1 to 231 is converted into a reciprocating motion of the crank rod 30 via the shaft 271, and the reciprocating motion of the crank rod 34 is converted into a vertical reciprocating motion of the heald frame 18 via the swing lever 13. By rotating the adjustment pin 26, the center axis C1 of the shaft 271 and the output shafts 201 to 231
Is changed, the turning radius of the shaft portion 271 changes, and the amount of vertical movement of the heald frame 18 changes.

In the first embodiment, the following effects can be obtained. (1-1) The adjustment pin 26 provided with the eccentric cam 261 and the slide body 273 provided with the engagement piece 274 constitute mounting position changing means, and the lock screw 29 secures the slide body 273 to the support 24 by fastening. Configure means. When the adjustment pin 26 is rotated while the fixing action of the lock screw 29 is released, the rotation of the eccentric cam 261 is
73 is slid in the radial direction of the output shafts 201 to 231. Due to this displacement, the mounting position of the shaft 27 in the radial direction of the output shafts 201 to 231 with respect to the support 24 is changed, the turning radius of the shaft 271 changes, and the amount of vertical movement of the heald frame 18 changes. Since the adjustment pin 26 serving as the operation unit of the attachment position changing unit and the lock screw 29 serving as the operation unit of the fixing unit are arranged in the same direction as one side surface of the prism 242 of the support 24, the opening amount can be easily adjusted. It is. . (1-2) Slide 273 due to elastic displacement of support 24
Is securely fixed. (1-3) Output shafts 201 to 2 of aperture drive motors 20 to 23
Numerals 31 are arranged in parallel with each other, and an adjustment pin 26 serving as an operation section of the mounting position changing means and a lock screw 29 serving as an operation section of the fixing means are arranged on the side of the output shafts 201 to 231. Therefore, the adjustment pins 26 and the lock screws 29 of the opening drive motors 20 to 23 are connected to the output shafts 201 to 23.
1 can be turned to bring them all in the same direction.
In the state of FIG. 1, all the heald frames 18 are aligned at the upper and lower intermediate positions, and all the adjustment pins 26 and the lock screws 29
Come in the same direction visible from the direction of the arrow X in FIG. The operation of all the adjustment pins 26 and the lock screws 29 can be performed from the same direction, and the vertical movement amounts of all the heald frames can be easily adjusted from the same direction. (1-4) The adjustment scale 31 indicates the opening amount, and a desired opening amount can be easily obtained by aligning the pointer 262 with the adjustment scale 31. Moreover, the adjustment scale 31 and the pointer 2
Reference numeral 62 is in the same direction as the operation unit, and is easily recognized.

Next, a second embodiment shown in FIG. 4 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the wide portion of the housing slit 246 is continuous with the shaft hole 241, and the engaging piece 274 is inserted into the wide portion. Eccentric cam 26 of adjustment pin 26
1 enters this wide part, and the lock screw 29 crosses the narrow part of the accommodation slit 246.

In this embodiment, the same effects as in the first embodiment can be obtained. Further, the insertion position of the lock screw 29 is farther away from the shaft hole 241 than in the first embodiment, and the elastic displacement of the support body 24 due to the tightening of the lock screw 29 is greater than in the first embodiment. Only weak clamping force is required. This contributes to facilitating the operation of adjusting the opening amount.

Next, a third embodiment of FIG. 5 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the narrow portion of the housing slit 243 is formed so as to cross the shaft hole 241, and the engaging piece 275 enters the shaft hole 241. A lock screw 29 is screwed onto one side surface of the prism portion 242, and the tip of the lock screw 29 contacts the engagement piece 275. Lock screw 29
Is screwed in, the slide body 273 is fixed in the guide groove 245.

In this embodiment, the same effects as (1-1), (1-3) and (1-4) of the first embodiment can be obtained. Next, a fourth embodiment of FIGS. 6 and 7 will be described. The same components as those in the first embodiment are denoted by the same reference numerals.

In this embodiment, the adjusting pin 32 having the eccentric cam 321 is inserted from one side of the prism portion 331 of the support 33, and the lock nut 34 is screwed into the pin head side of the adjusting pin 32. Have been. A slide body 276 constituting the shaft 27 is fitted to the prism 331 so as to be displaceable only in the longitudinal direction of the prism 331. A pair of engaging pieces 277 and 278 are formed on the slide body 276, and an engaging groove 279 is formed on the engaging piece 277. The engaging piece 278 is joined to one side of the prism 331, and the engaging piece 277 is joined to the other side of the prism 331. The eccentric cam 321 is in the engagement groove 279, and the lock nut 34 is joined to the engagement piece 278. If the lock nut 34 is screwed so as to be joined to the engagement piece 278, the adjustment pin 32 and the shaft 27 are fixed to the prism 331.

If the adjustment pin 32 is rotated while the lock nut 34 is not tightened, the eccentric cam 321 rotates in the engagement groove 279 and the slide body 276 moves to the output shaft 2.
It is displaced in the radial direction of 01 to 231 and the opening amount is changed.

In this embodiment, the same effects as in the items (1-1), (1-3), and (1-4) in the first embodiment can be obtained.

[0030]

As described above in detail, according to the present invention, the operating portion of the mounting position changing means for changing the mounting position of the shaft with respect to the support, and the fixing for fixing the shaft so that the mounting position can be changed to the support. Since the operation sections of the means are arranged in the same direction, an excellent effect that the workability of adjusting the amount of vertical movement of the heald frame driven by the opening drive motor can be improved can be achieved.

[Brief description of the drawings]

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

FIG. 2 is a view as viewed in the direction of the arrow X in FIG. 1;

FIG. 3 is an exploded perspective view of a main part.

FIG. 4 is an exploded perspective view of a main part showing a second embodiment.

FIG. 5 is an exploded perspective view of a main part showing a third embodiment.

FIG. 6 is an essential part cross-sectional view showing a fourth embodiment.

FIG. 7 is an exploded perspective view of a main part.

[Explanation of symbols]

18 ... Heald frame, 20-23 ... Opening drive motor, 201-
231: output shaft, 24, 33: support, 243, 246
... accommodation slits, 26, 32 ... adjustment pins as attachment position changing means, 261, 321 ... eccentric cams as cams,
27: shaft, 273, 276: slide, 274, 2
78: engagement piece, 29: lock screw serving as fixing means, 34
… Lock nuts as fixing means.

Claims (4)

[Claims] 1. An opening device for individually driving a heald frame by an opening drive motor independent of a loom drive motor, a support member attached to an output shaft of the opening drive motor, and a slide in a radial direction of the output shaft. A shaft attached to the support such that the shaft can be displaced, and mounting position changing means for changing the mounting position of the shaft with respect to the support; and fixing the shaft so that the mounting position can be changed on the support. A loom having a heddle frame driven by the rotation of the shaft accompanying the rotation of the output shaft, and an operating part of the mounting position changing means and an operating part of the fixing means arranged in the same direction. Opening device. 2. The mounting position changing means comprises a cam, an adjusting pin mounted on the support, and a slide provided on the shaft and engaged with the cam. The shedding device according to claim 1, wherein the sliding direction is a radial direction of the output shaft, and the fixing means is a lock screw that is screwed to the support and tightens and fixes the slide body to the support. 3. The slide body has an engagement piece, the support body has an accommodation slit for accommodating the cam of the adjustment pin and the engagement piece, and a fixing action of the lock screw is: The shedding apparatus according to claim 2, wherein the support is elastically deformed so as to narrow the gap between the housing slits, and the slide body is sandwiched and fixed to the support by the elastic deformation. 4. The output shaft of the opening drive motor is arranged in parallel with each other, and the operation part of the mounting position changing means and the operation part of the fixing means are arranged on the side of the output shaft. An opening device in a loom according to any one of claims 1 to 3.