JPS5922141Y2 - Drive device for cross rollers for indirect winding in looms - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drive device for a cross roller for indirect winding in a loom.

Generally, there are two methods for winding woven fabric onto cross rollers: the so-called direct winding method, in which a surfen roller is pressed against and rolled by the cross roller, and the other is the direct winding method, in which the cross roller itself is actively rotated. There is a so-called indirect winding method.

In the latter indirect winding, when performing flaw recovery,
Since the cross roller is actively reversed, there is a drawback that the amount of unwinding becomes large even in one rotation, especially when the winding diameter is large, and the excess fabric becomes slack.

In this case, it is conceivable to interpose a one-way clutch in the surface roller so that the cross roller does not actively rotate in the case of reverse rotation, but since there is no resistance to the cross roller being reversed by the cloth tension,
It is not possible to eliminate the problem of excessive rotation due to inertia or the like, resulting in a large amount of unwinding of the woven fabric.

Conventionally, in order to eliminate such defects, cross roller drive devices used a ratchet mechanism on the cross roller shaft to prevent the transmission of reverse rotation, but the cross roller is equipped with a ratchet for stopping reverse rotation and a brake. Attempts to install such a device not only complicate the structure and make manufacturing and assembly troublesome, but also leave behind various technical problems such as wear of parts.

The purpose of this invention is to support the sprocket wheel with respect to the surface roller shaft through a means of transmitting motion only during forward rotation, such as a one-way clutch, and to hook the sprocket wheel to the surface roller shaft and the cross roller side sprocket wheel. A motion transmission means such as a one-way clutch that operates only during reverse rotation is interposed between the tension sprocket wheel of the chain and the sprocket's support shaft, and a motion transmission means such as a one-way clutch that operates only during reverse rotation is installed between the cross roller drive shaft and the sprocket. By interposing the torque chisel, it is possible to prevent excessive unwinding of the fabric during reversing operations such as removing flaws, and the structure can be simplified, making manufacturing and assembly easy.For indirect winding on looms. An object of the present invention is to provide a cross roller drive device.

Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In the drawing, 1 is supported by a shaft 3 between frames 2 on both left and right sides, and is rotated by an appropriate drive mechanism in synchronization with the weaving operation. This is a surface roller around which the woven fabric C that has passed through the expansion bar 4 is wound, so that the woven fabric C can be pulled out along with the weaving operation.

Reference numeral 5 denotes a press roller that is pressed against the outer periphery of the surface roller 1, around which the woven fabric C from the surface roller 1 is wound, and the woven fabric C that has passed through this is sent to a tension bar 6 disposed below. It looks like this.

Reference numeral 7 denotes a pair of front and rear support rollers that are rotatably supported by shafts 9 on opposite sides of a pair of brackets 8 fixed to the inner surfaces of the left and right frames 2, and 10 is a small-diameter water-covered shaft portion formed at both ends. 10a is a cross roller that winds up the woven fabric C from the tension bar 6, which is rotatably supported at a fixed position by the support roller 7, and the tips of both supported shaft portions 10a are shown in FIG. As shown in the figure, connecting portions 10b having a diameter smaller than that of the received shaft portion 10a are formed integrally with each other, and a groove 10C for receiving power is cut out at the tip of both connecting shaft portions 10b. .

Reference numeral 11 denotes a drive shaft which is rotatably supported on the same axis as the rotational axis of the cross roller 10 to a shaft support tube 12 screwed and fixed to the right frame 2 as shown in FIG. A plate-shaped projection 11a that can be loosely engaged with the groove 10C of the connecting shaft portion 10b is integrally formed at the end.

13 is a shaft support cylinder 14 screwed and fixed to the left frame 2
On the other hand, there is a guide rod for positioning the cross roller 10 that is supported and fixed so as to be located on an extension of the rotational axis of the cross roller 10, and the concave groove 10C of the connecting shaft portion 10b is provided with the tip thereof flush. I try to make it a play.

Reference numerals 15 and 16 denote sleeves that are slidably fitted to the outer peripheries of the drive shaft 11 and one connecting shaft portion 10b and the guide rod 13 and the other connecting portion 10b in a direction away from the connecting shaft portion 10b. This prevents the cross roller 10 from being eccentric from the axial position of the drive shaft 11 and guide rod 13.

Reference numeral 17.18 denotes a stopper in the shape of a plane, which is attached to the shaft support cylinder 12.14 so as to be rotatable in the vertical direction, and locks the end surface of the sleeve 15.16. It is intended to hold the snobs 15,16 in place.

Next, the drive mechanism for transmitting the rotation of the drive shaft 3 of the surface roller 1 to the cross roller 10 will be explained with reference to FIGS. It is a mounting cylinder fitted so as to be rotated via a one-way clutch 21 and a bearing (the path shown in the figure), which is integrally formed with a flange 20a on its outer periphery, and a sprocket wheel is attached to the flange 20a. 22 is attached with 23 bolts.

Reference numeral 24 denotes a circular mounting plate that is fitted and fixed to the outer end of the drive shaft 11, and a sprocket wheel 26 is attached to the outer peripheral flange portion 24a via a disk brake 25 consisting of two linings 25a and 25b. Tightening bolt 2
It is braked by a pressing plate 27 which is biased by a spring 28a fitted on the top of the pressing plate 27.

Reference numeral 29 denotes a chain suspended between the sprocket wheels 22 and 26. When the chain 29 is rotated by normal rotation of the surface roller 1, the sprocket wheel 26 is connected to the drive shaft via the disk brake 25 and the mounting plate 24. 11.

Furthermore, by adjusting the tightening force of the tightening bolt 28, when a torque larger than a predetermined rotational torque of 1 to 100 mph is applied, the mounting plate 24 and the sprocket wheel 26 resist the friction force between them. It is designed to rotate relative to each other.

In addition to this disc brake 25, a torque limiter such as a drum brake may be used.

The chain 2
The one-way clutch 33 and bearing (path shown) are rotated freely when the chain 29 rotates normally so as to mesh with the chain 9.
The tension sprocket wheel is supported through the chain 29 and the sprocket wheel 2, and when the surface roller 1 is reversed to remove scratches, etc., the chain 29 and the sprocket wheel 2
The rotation of 6 is stopped.

Next, the operation of the cross roller drive support device configured as described above will be explained.

Now, when machine operation is started and the surface roller 1 is rotated in the normal direction, its rotation is caused by the one-way clutch 21, the mounting cylinder 20, the sprocket wheel 22, the chain 29, the sprocket wheel 26, the disk brake 25, the mounting plate 24, the drive The woven fabric C is transmitted to the cross roller 10 via the shaft 11 and the protrusion 11a of the coaxial shaft 11, and the woven fabric C is sequentially wound onto the cross roller 10.

When a scratch appears on the woven fabric C, the machine is reversed and the thread is removed.

At this time, when the surface roller 1 is reversed, the woven fabric C
The cross roller 10 is reversed by the tensile force of 33, and the chain 29 and sprocket 26 are also stopped. Therefore, the drive shaft 11 and the mounting plate 24 are rotated by the disc brake 25 by the amount of unwinding of the woven fabric C, and the elliptical rotation of the cross roller 10 causes the woven fabric C to be unwound. Unnecessary rewinding is prevented.

When the woven fabric C is wound around the cross roller 10 and reaches a predetermined amount, the machine operation is stopped and the cross roller 10 is cut off.

At this time, loosen the bolt 19 and stopper 17.18.
is rotated upward and reversed, the snows 15 and 16 are slid to separate from the connecting shaft portion 10b, and the cross roller 10 is removed while rolling on the support roller 7.

Now, in the embodiment of the present invention, a sprocket wheel 22 is supported on the rotating shaft 3 of the surface roller 1 via a one-way clutch 21, and a sprocket wheel 22 is supported on the rotating shaft 3 of the surface roller 1.
1 supports a sprocket wheel 26 via a disc brake 25, and connects two tension sprockets L-wheel 30 and a support shaft 32 of the tension sprocket 30 with chains hung on both sprockets L-22 and 26. In between is a one-way clutch 33 that operates only during reverse rotation.
Since the chain 29 is interposed, the chain 29 is
, the rotation of the sprockets L-26, 30 is stopped by the one-way clutch 33, and the braking action of the disk brake 25 is used to restrict the reverse rotation of the cross roller 10, making it possible to rewind the woven fabric as much as necessary. This can prevent sagging.

In addition, in the present invention, the one-way crat 33 for stopping the rotation of the chain 29 and sprocket 26 when the south cross roller 10 is reversed is attached to the angion sprocket 30.
Since it is attached to the side, the number of parts can be reduced and the structure simplified compared to the conventional method of attaching it to the drive shaft 11 side, making manufacturing and assembly easier.

In the above embodiment, the one-way clutch 21 is interposed between the shaft 3 and the mounting cylinder 20, and the one-way clutch 3 is interposed between the support shaft 32 and the tension sprocket wheel 30.
3 was inserted, but these one-way clutches 21.3
A ratchet I mechanism may be used instead of 3.

Further, in the above embodiment, the tension sprocket wheel 3
As shown in FIG. 4, double tension sprocket wheels 34a and 34b which rotate synchronously are supported on a support shaft 32 via a one-way clutch 33, and one sprocket wheel 34a and sprocket wheel 22 with chain 35
The other sprocket wheel 34b may be hung from the sprocket wheel 26 by another chain 36.As described in detail above, the present invention provides a surface roller that rotates normally on the rotation axis of the surface roller. The sprocket wheel is supported through a means for transmitting only directional motion, while the sprocket wheel is supported through a torque limiter on the drive shaft of the cross roller, and the tension sprocket wheel of a chain is hung on both sprocket wheels. The same tension.

By interposing a means to prevent rotation only during reverse rotation between the support shaft of the rocket wheel, it is possible to prevent excessive unwinding of the woven fabric during reverse rotation, such as when removing scratches, and to reduce the number of parts. This has the effect of simplifying the structure and making manufacturing and assembly easier.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the cross roller drive device of the present invention, Fig. 2 is a partially omitted front view, Fig. 3 is an exploded perspective view showing the cross roller support device, and Fig. 4 FIG. 3 is a side view showing another embodiment of the present invention. 1... Surface roller, 3... Rotating shaft, 10...
・Cross roller, 11... Drive shaft, 21.33...
One-way clutch, 22... Sprocket wheel, 24... Mounting plate, 25... Disc brake, 2
6...Sprocket wheel, 29.35.36...
-Chain, 30...Tension sprocket wheel, 32...Spindle, 34...Double tension sprocket wheel.

Claims (1)

[Claims for Utility Model Registration] 1. A sprocket wheel is supported on the rotating shaft of a surface roller via means for transmitting motion only in the forward rotation direction,
On the other hand, the drive shaft of the cross roller!・The sprocket wheel is supported via the lock limiter, and there is also a means interposed between the tension sprocket wheel of the chain hung on both sprocket wheels and the spindle of the tension sprocket wheel to prevent rotation only during reverse rotation. A drive device for a cross roller for indirect reading in a loom, characterized in that: 2. In the loom according to claim 1, wherein a mounting plate having a flange on the outer periphery is fixedly supported on the drive shaft of the cross roller, and a sprocket is pressure-bonded to the flange via a disc brake. Drive device for cross rollers for indirect winding.