JP2561625Y2 - Loom surface roller reverse rotation prevention device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loom having a clutch mechanism for winding a woven fabric once for a plurality of picks (beating).

[0002]

2. Description of the Related Art Conventionally, weaving a loom as described above during weaving.
Figure when increasing the weft density of cloth5May as shown
Power transmission between motor 1 and surface roller 2System 3T
In addition, the opening device 1 such as a dobby
0 activates the shifter lever 14 via a link or the like.
To stop winding. That is,
Driven shaft 3 that transmits the drive rotation from
The clutch 4b is rotatably supported by the clutch 4b.
And the driving side clutch 4a rotates integrally with the drive shaft 3
As possible and freely movable in the axial direction.
Switch 4b. Clutch 4 is in ON state
When the rotation of the drive shaft 3 is surfed through the worm gear 2a,
The cloth C is transmitted to the roller 2 and wound up. Stopped winding
When shifting, the shifter 14 is controlled by the opening device 10.
Presses the driving side clutch 4a in the compression direction of the spring 55,
The active clutch 4a is disconnected from the driven clutch 4b.
The driven clutch 4b is driven on the drive shaft 3 by the driving clutch 4b.
FromIt is cut and becomes rotatableReverse rotation force due to warp tension
Is transmitted back to the worm gear 2a via the surface roller 2.
As a result, a reverse rotational force is applied to the driven clutch 4b.

[0003]

When the driving-side clutch is disconnected from the driven-side clutch in this way, the worm gear loses the driving torque from the driving-side clutch, and the reverse rotation force due to the warp tension remains unchanged from the driven-side clutch. If the driven clutch reversely rotates even slightly due to machine vibration, the surface roller is reversely rotated via the worm gear, and the position before weaving returns, weaving the weft with a different density of weft to improve the quality of the woven fabric. There was a risk of getting worse.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to rotate a driving side clutch integrally with a drive shaft of a drive transmission mechanism from a main motor to a surface roller.
So that the driven clutch can rotate relative to the drive shaft.
And the rotation of the driven clutch is a surface roller
By turning on and off the clutch including the driving side clutch and the driven side clutch, the surface roller performs one intermittent cloth feed to a plurality of picks, thereby changing the weft yarn density. In a loom that has been enabled, a rotating body is provided integrally with a drive shaft, and frictional sliding is provided on one of the rotating body and a driven side clutch.
A moving body is provided, and the friction sliding body is used when the clutch is OFF.
In addition, the friction sliding body generated by the rotation of the drive shaft and the other part
Rotational force due to friction between the material and the
Surf S Roller
Pressing force that does not rotate the cloth in the cloth feeding direction
And is in pressure contact with the other member .

[0005]

According to the present invention, a drive-side clutch integrated with a drive shaft driven and rotated by a main motor is disconnected from a driven-side clutch.
Stop the rotation of the surface roller and make multiple picks to increase the weft density. When the clutch is disengaged, a rotational force in the opposite direction due to the warp tension is transmitted to the driven clutch , while the rotation of the drive shaft causes the driven clutch to rotate.
And the friction provided on one of the rotating members integral with the drive shaft
The friction sliding body is rotated in reverse by warp from the surf roller.
Surf es roller in cloth feeding direction
Is a pressure contact force that is large enough to prevent rotation.
The driven clutch has the same drive shaft as the driven shaft.
Directional friction rotational force is transmitted, so that the driven clutch is prevented from reverse rotation against the reverse rotational force from the surface roller.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a well-known dobby device 10 is provided between a main motor 1 and a surface roller 2 as an opening device.
3a, 3b, and a function of temporarily cutting off the drive of the dobby device 10, the surface roller 2, the cross roller 5 and the like with the pick finder device 50 interposed in the drive transmission path 3 on the main motor 1 side. Is provided. A mechanical clutch 4 is interposed between the drive transmission paths 3a and 3b. The surface roller 2 sends out the cloth C in a state where the clutch is connected, and is wound up by the cross roller 5. When the clutch 4 is disconnected, the surface roller 2 stops rotating and the cloth roller C is not fed because the cloth C is not sent. I try to stop it.

Next, as shown in FIG. 2, in the clutch 4, the clutch teeth 51a, 52a provided on the driving side clutch 51 and the driven side clutch 52 are opposed to each other on the drive shaft 3A provided on the drive transmission path 3a. It is fitted so that it can be engaged. The drive side clutch 51 is guided by a key 3C fixed to the drive shaft 3A by the movement of the shifter 14 intermittently controlled by the dobby device 10, and is made movable in the axial direction, and is driven by a spring 55 wound around the drive shaft 3A. The clutch 52 is pressed in the direction of the clutch 52. In addition, the driven clutch 52
Is rotatably supported via a pair of bearings 56 of the drive shaft 3A so as not to move in the axial direction. A worm tooth 52b is formed in an intermediate portion of the outer periphery, and the drive shaft 3A
Drive shaft 3B provided in a drive transmission path 3b orthogonal to and above
Worm gear 53.

On the opposite side of the clutch teeth 52a, a rotating body 58 is fixed to the drive shaft 3A with screws 59 so as to surround the upper part of the outer periphery of the protruding portion 52c protruding from the end of the worm tooth 52b. Between the protrusion 52c periphery and the rotating body 58
The friction sliding body 60 is interposed in such a manner that the inner surface of the friction sliding body 60 can slide and rotate on the outer peripheral surface of the protruding portion 52c. As shown in FIG. 3, the friction sliding body 60 is provided with a plurality of adjusting screws of the rotating body 58 (three in this case: FIG. At
(Shown below the screw 59) , and is pressed against the outer periphery of the protruding portion 52c to adjust the friction pressure contact force with the driven clutch 52.
Adjustable with screws . Also, materials having high frictional force such as nylon and bake lacquer are used.

The dobby device 10 has a plurality of jack levers 12 connected to a frame 11 so as to be vertically movable. These jack levers 12 are used for the perforated paper card 1.
It is well known that the up-and-down movement is controlled by 3 and a fabric having a predetermined structure is woven. One of the jack levers 12 is not connected to the frame 11, and the jack lever 12 and the clutch 4 are connected to a shifter 1 comprising a link or the like.
The clutch 4 is connected and disconnected by the vertical movement of the jack lever 12 so that the intermittent winding rotation of the surface roller 2 is performed. In this embodiment, the paper card 13 contains data for moving the jack lever 12 connected to the clutch 4 up and down so that one winding operation with two picks is repeated seven times during weaving. The main motor 1 is ON, O
The FF is performed, and the ON signal is transmitted as a machine operation signal a to a transmission control device 30 that drives and controls the transmission motor 25.

Next, in the warp yarn Y sending device 20, a gear 22 and a gear 23 integral with the sending beam 21 are engaged. The gear 23 is connected to a reduction gear train 24, and the reduction gear train 24 is connected to a forward / reverse rotating and variable speed delivery motor 25 composed of a servomotor. The delivery motor 25 is controlled by the delivery control device 30.

The operation of such a configuration will be described. An operation command is given from the machine control device 15 to the main motor 1. Then, the machine operation signal a is input to the sending device 30, whereby the sending motor 25 rotates. On the other hand, at this time, if the clutch 4 is not disengaged by the dobby device 10, the surface roller 2 also rotates continuously,
The warp Y sent out from the back roller 46 is opened by the dobby device 10 from the back roller 46, woven by weft insertion and upsetting, and the completed cloth C is continuously passed through the surface roller 2 from the press roller to the cross roller 5. And it is wound up. During the weaving, when the jack lever 12 connected to the clutch 4 of the dobby device 10 is raised from the information of the paper card 13, the clutch 4 is disengaged and the surface roller 2 stops rotating.

At this time, a reverse rotation force in a direction opposite to the winding direction is applied to the driven clutch 52 via the surface roller 2, the drive path 3b and the worm gear 53 due to the tension of the warp Y. On the other hand, even if the clutch 4 is disengaged, the drive shaft 3A continues to rotate as it is, and rotates the friction sliding body 60 together with the rotating body 58. Although the frictional sliding body 60 is opposed to the reverse rotational force from the surface roller 2, the driving side is previously set so that a rotational force that does not rotate the surface roller 2 in the cloth sending direction is generated between the frictional sliding body 60 and the driven-side clutch 52. By keeping the clutch 52 in pressure contact with the adjusting screw , the frictional sliding body 60 slides and rotates on the outer peripheral surface of the protruding portion 52c of the driven clutch 52 by the frictional force generated by the pressure contact force, and the driven clutch 52 is fed out. Although it does not rotate in the direction, it opposes the reverse rotation force by the warp Y and keeps the clutch 4 disengaged. Therefore, even when the clutch 4 is disengaged, the driven clutch 52 does not rotate in the reverse direction and does not move on the cloth fell.

It should be noted that the present invention is not limited to the above-described embodiment, and, for example, as shown in FIG.
A frictional slide 160 formed of an elastic body such as a leaf spring is attached to the outer periphery of the projection 152c of the
a may be pressed against the side surface of the rotating body 158 integral with the drive shaft 103 with the above-mentioned predetermined pressure contact force to generate a friction rotational force against the reverse rotational force from the drive shaft 3B .

[0014]

As described above, according to the present invention , the drive shaft of the drive transmission mechanism from the main motor to the surface roller is provided.
The drive side clutch is provided so as to rotate integrally with the
The driven clutch is supported so that it can rotate relative to the shaft.
Structure so that the rotation of the latch is transmitted to the surface roller.
From the driving side clutch and the driven side clutch.
By turning the clutch on and off
Let the roller perform one intermittent cloth feed to multiple picks,
In a loom with a variable weft density,
A rotating body is provided integrally with the shaft, and this rotating body and the driven clutch
A friction sliding body is provided on one of the
When the clutch is off, the moving body
Rotation caused by friction between the sliding member and the other member
Rolling force is converted to reverse rotation force by warp from surf-es roller
Turn the surf roller in the cloth feeding direction
Press against the other member with a pressing force that is large enough not to rotate
The drive side to increase the weft density.
Disengage the clutch and disconnect the driven clutch from the drive shaft.
In this case, the driven clutch does not reversely rotate due to mechanical vibrations, etc., and the position before the weaving is accurately maintained, and at the time of intermittent winding, a predetermined weft yarn density is obtained, which is useful for improving the quality of woven fabric. is there.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an entire loom implementing a device of the present invention.

FIG. 2 is an explanatory view of a clutch unit of the device of the present invention.

FIG. 3 is a detailed view of a friction sliding body.

FIG. 4 is an explanatory diagram of another embodiment.

FIG. 5 is an explanatory view of a conventional clutch unit.

[Explanation of symbols]

1 Main motor, 2 Surface roller, 3,3
a, 3b drive transmission device, 3A, 3B drive shaft, 4
Clutch, 51 driving side clutch, 52 driven side clutch, 58 rotating body, 59 screw, 60 friction sliding body, C cloth, Y warp

Claims (1)

(57) [Scope of request for utility model registration] 1. A drive-side clutch integrally rotates with a drive shaft of a drive transmission mechanism from a main motor to a surface roller .
So that the driven-side clutch rotates relative to the drive shaft.
And the rotation of the driven clutch is surface low.
By turning on and off the clutch composed of the driving side clutch and the driven side clutch, the surface roller performs one intermittent cloth feed to a plurality of picks to reduce the weft yarn density. In a loom which can be changed, a rotating body is provided integrally with a drive shaft, and frictional sliding is provided on one of the rotating body and a driven side clutch.
A moving body is provided, and the friction sliding body is used when the clutch is OFF.
In addition, the friction sliding body generated by the rotation of the drive shaft and the other part
Rotational force due to friction between the material and the
Surf S Roller
Pressing force that does not rotate the cloth in the cloth feeding direction
And a surface roller reverse rotation preventing device for a loom, wherein the device is in pressure contact with the other member .