JPH0748679Y2 - Automatic doffing device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic doffing device in a spinning machine.

[0002]

2. Description of the Related Art In doffing by an automatic doffing device, a new paper tube is supplied to a winding device by a paper tube feeding arm having a paper tube pinching member called a chucker at its tip. That is, first, the paper tube supply arm swivels toward the paper tube receiving member, and the paper tube pinching member called a chucker at the tip thereof is arranged at the paper tube outlet of the paper tube receiving member. The chucker is a short tweezer-like member in which two elastically deformable plate members are fixed in parallel with each other at one end, and the chucker has a shape and a size that enable the paper tube to be sandwiched between the cylindrical peripheral surfaces. Since the pusher attached to the paper core receiving member pushes the paper core out of the paper core receiving member, the paper core is pushed into the chucker. After that, the paper tube supply arm is turned toward the winding device, and the paper tube held by the chucker is set on the cradle arm. When the paper tube supply arm is retracted after the paper tube support by the cradle arm is completed, the paper tube is pulled out from the chucker and remains in the cradle arm.

In the above-described paper core supply process, when there is a trouble or an operation abnormality that prevents the cradle arm from receiving the paper core, the paper core fed by the paper core supply arm is retracted. Even if it is not pulled out from the chucker, it remains on the paper tube supply arm while being held by the chucker. Therefore, when the paper tube supply arm enters the next paper tube supply cycle and places the chucker at the paper tube outlet of the paper tube receiving member, the chucker will push the paper tube out of the paper tube receiving member even if the pusher tries to push it out. The paper core that you are holding is disturbed and you cannot move.

When the pusher is prevented from performing a predetermined operation,
Unnecessary force is applied to the pusher drive mechanism, which causes failure. Further, since the paper tube remains pressed against the paper tube in the chucker, the rotation of the paper tube supply arm toward the cradle arm is also hindered, and the paper tube supply arm is forced to stop or break down. .

[0005]

SUMMARY OF THE INVENTION In view of the above points, the present invention provides a paper core of a paper core receiving member with a chucker holding the paper core when the paper core is not pulled by the cradle arm for some reason. The purpose is to prevent the device from being arranged at the tube outlet (paper tube receiving part) and causing a device failure.

[0006]

A paper tube removing lever that can be turned independently of a paper tube feeding arm in a turning plane that is parallel to the turning surface of the paper tube feeding arm has a lever tip with a paper tube receiving member. It is mounted so as to move in and out of the paper tube passage area between the cradle of the take-up device and the cradle, and the tip of the paper tube removal lever is not displaced in the paper tube receiving member direction beyond the predetermined position in the paper tube passage area. A means for limiting the turning range is installed in the paper tube excluding lever turning area, and a means for urging the paper tube excluding lever in the turning limit direction by the turning range limiting means is provided between the paper tube excluding lever and its supporting member. I installed it in between.

[0007]

The automatic doffing device of the present invention receives the paper tube from the paper tube receiving member, transfers the paper tube by rotating the paper tube supply arm,
When performing a basic paper core supply operation such as paper core transfer by retracting the paper core supply arm after supporting the paper core on the cradle arm, the chucker swings toward the cradle arm to transfer the paper core to the cradle arm. When moving, the leading end of the paper tube displacing lever urged by the spring enters the paper tube passage area and is stopped by the stopper so that the lever cannot be rotated to the paper tube receiving member. When the chucker holding the paper tube returns to it, the paper tube collides with the tip of the paper tube removing lever and is pushed out of the chucker while the paper tube supply arm continues to turn toward the paper tube receiving member. .

The tip of the paper tube removing lever collides with the paper tube held by the chucker in the process of the paper tube supply arm pivoting from the paper tube receiving member toward the winding device. Not only acts in the direction of pressing the paper tube to the chucker, but is also pushed by the paper tube and swivels toward the winding device, and is removed from the paper tube passage area, so it does not hinder the supply of the paper tube.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the device of the present invention will be described below with reference to the drawings.

In a spinning device such as a spinning device or a winder, along a machine base formed by arranging a plurality of units including a draft part, an air twisting nozzle, a yarn detecting device, a winding device, etc. The traveling paper truck 1 is provided with the paper tube chuck device 2 of the present invention. The paper tube chuck device 2 is a device for chucking the empty paper tube 4 stocked in the paper tube receiving member 3 of the carriage 1 to the cradle arm 6 of the winding device 5 constituting the unit. The cradle arm 6 is composed of a pair of arms, and one arm is swingably supported so that the pair of arms is opened and closed, and the paper tube 8 is held by a paper tube support 7 provided at the top of each arm. ing. When the paper tube 8 is fully wound, one arm is pushed open to eject the full-wrapped package 9 to the package receiver 10.

Since the paper tube chucking device 2 of the present invention chucks the empty paper tube 4 to the cradle arm 6 that has released the full-wrapped package 9, the empty paper tube 4 is gripped and swung toward the top of the cradle arm 6. It has a chucker 11 that does. The chucker 11 is provided at the tip of a pair of plate-like chucker arms 13 supported by a support shaft 12 so as to be swingable on the carriage 1, and comprises a U-shaped metal plate 14 having an open tip and a chucker support member 15. . The chucker support member 15 is supported on the chucker arm 13 by a shaft 16 so as to be able to swing. The shaft 16 is provided with a small gear 17 capable of swinging integrally with the chucker support member 15, and meshes with a fan gear 19 pivotally supported by a shaft 18 on the chucker arm 13. A spring 20 is locked to the sector gear 19 so that the sector gear 19 is always urged to rotate clockwise in FIG. Reference numeral 21 is a stopper for the chucker arm 13 and the sector gear 19. Above the spindle 12 of the chucker arm 13, a paper tube removing lever 22 is provided as a spindle 23.
Is provided so that it can be turned by a spring 24 as a turning biasing means, and is biased in the direction of turning clockwise in FIG.
The tip portion 26 is provided by the stopper 25 as the turning range limiting means.
It is usually stopped in the state of raising. Paper core removal lever
22 is provided so that its tip enters and exits the paper tube passage area A at the time of turning, but does not collide with the chucker 11. The paper tube passage area A is an area through which the empty paper tube 4 held by the chucker 1 passes when being conveyed from the paper tube receiving member 3 toward the cradle arm 6 as the chucker arm 13 turns.

The paper tube excluding lever 22 extends in two opposite directions from the fulcrum of the support shaft 23, and one extension 27
The spring 24 is bridged with the pin 28 on the lever supporting member. On the other hand, the other extension 29 is an engaging piece with the stopper 25 projectingly provided on the lever supporting member, and the paper tube removing lever 22 pivots in the clockwise direction in FIG. This is for contacting the stopper 25 when the tube passage area A has sufficiently entered, and for preventing the paper tube excluding lever 22 from turning any further. Above spring 24 and stopper
Due to the action of 25, the extension 29 is in contact with the stopper 25 and the lever tip portion 26 is in the paper tube passage area A unless the force for turning the paper tube excluding lever 22 in the counterclockwise direction acts. Take the standby position.

Below the paper tube receiving member 3, a pusher 30 for mounting the empty paper tube 4 in the paper tube receiving member 3 to the chucker 11 is provided. The pusher 30 has a pusher lever 31 and a cam 32 that swings the pusher lever 31. Pusher lever 31
Is swingably supported by a shaft 33, a hammer 34 is provided at the top, a spring 36 is locked at a lower extension 35, and is biased so as to always turn counterclockwise in FIG. A cam roller 37 provided at the center is brought into contact with the cam 32. The pusher lever 31 is rotated by the rotation of the cam 32.
Swings the hammer 34 back and forth by the tensile force of the spring 36,
The empty paper tube 4 in the paper tube receiving member 3 is driven toward the chucker 11.

When the paper tube is supplied by this automatic doffing device,
The chucker arm 13 pivots in the clockwise direction to dispose the chucker 11 at the tip thereof at the paper tube outlet 38 of the paper tube receiving member 3. At this time, the cam 32 rotates in conjunction with the turning motion of the chucker arm 13, and the pusher lever of the pusher 30 is rotated.
31 is rotated counterclockwise by the pulling force of the spring 36, and the hammer 34 at the top of the pusher lever 31 strikes the empty paper tube 4 in the paper tube receiving member 3 to the left in FIG. The chucker 11 is held between the paper tube holding plates 14. Next, the chucker arm 13 turns and turns in the direction of the cradle arm 6 and moves to the position indicated by the chain double-dashed line. During this time, the chucker 11 facing the direction of the paper tube receiving member 3, that is, the right direction in FIG. The direction must be 6 or left. Chucker arm 13
When starts to turn counterclockwise around the spindle 12,
The fan-shaped gear 19 supported by the chucker arm 13 rotates clockwise about the shaft 18 by the elastic force of the spring 20. As a result, the small gear 17 meshing with the sector gear 19 also rotates, the support member 15 of the paper tube holding plate 14 integral with the small gear 17 also rotates counterclockwise, and the chucker 11 faces left.

The chucker 11 which is turned during turning of the chucker arm 13 in the counterclockwise direction disposes the empty paper tube 4 held by the chucker arm 13 at the position of the paper tube support 7 of the cradle arm 6. When the paper tube support 7 clamps the end surface of the empty paper tube 4 and the support of the empty paper tube 4 by the cradle arm 6 is completed, the chucker arm 13 again turns and turns toward the paper tube receiving member 3. The empty paper tube 4 sandwiched by the paper tube support 7 is pulled out from the paper tube holding plate 14 of the chucker 11 and remains on the cradle arm 6.

During this time, the paper core removing lever 22 in the standby position
Holds its position without contacting the chucker 11 in the process in which the chucker arm 13 pivots toward the paper tube receiving member 3. When the chucker arm 13 pivots in the direction of the cradle arm 6 after the chucker 11 holds the empty paper tube 4, the empty paper tube 4 to be conveyed has the tip of the paper tube removing lever 22 located in the paper tube passage area A. Although it collides with the portion 26, at this time, the paper tube excluding lever 22 pushed by the empty paper tube 4 springs.
It turns counterclockwise against the force of 24, its tip 26 is pushed out of the paper tube passage area A, and is in the state indicated by the chain double-dashed line. Therefore, neither the empty paper tube 4 nor the chucker 11 is prevented from moving in the direction of the cradle arm 6.
After passing through the empty paper tube 4, the paper tube removing lever 22 immediately turns clockwise by the force of the spring 24 and returns to the standby position.

On the other hand, if the paper tube support 7 of the cradle arm 6 does not clamp the empty paper tube 4 for some reason,
The empty paper tube 4 carried by the chucker 11 is a chucker arm.
Even if 13 is retracted in the direction of the paper tube receiving member 3, it is not pulled out from the chucker 11 and returns to the paper tube receiving member 3 while being held by the chucker 11. However, in this case, the empty paper tube 4 collides with the tip of the paper tube removing lever 22 in the paper tube passage area A. Since the paper tube excluding lever 22 is blocked by the stopper 25 and cannot rotate in the direction of the paper tube receiving member 3 any more,
Only the empty paper tube 4 cannot be further moved toward the paper tube receiving member 3 while being held by the paper tube holding plate 14 of the chucker 11, and is removed from the chucker 11 and falls.

As described above, since the chucker 11 always turns toward the paper tube receiving member 3 in an empty state, the pusher 30 of the paper tube receiving member 3 is attached to the chucker 11 while holding the empty paper tube 4 therebetween. It is possible to avoid the situation in which the user tries to push the empty paper tube 4 further and causes a failure.

[0019]

In the device of the present invention, even if the chucker that fails to deliver the paper tube to the cradle returns with the paper tube being held, the paper tube removing lever removes the paper tube from the chucker. There is no risk that the chucker holding the tube is placed at the paper tube outlet of the paper tube receiving member and causes a malfunction.

[Brief description of drawings]

FIG. 1 is a side view of an essential part of an embodiment of the present invention.

FIG. 2 is a side view showing a state in which the bobbin chuck device holds the bobbin by the cradle arm.

[Explanation of symbols]

 3 Paper tube receiving member 5 Winding device 6 Cradle arm 7 Paper tube supporting tool 4 Paper tube supply arm 11 Chucker 13 Chucker arm 22 Paper tube removing lever 24 Spring 25 Stopper 26 Paper tube removing lever tip A Paper tube passage area

Claims (1)

[Scope of utility model registration request] 1. A clay of a winding device for holding a paper tube and winding the paper tube.
Paper core supply means to supply to the dollar and paper core to the cradle
Force the paper core from the paper core supply means when the insertion fails
And a paper tube excluding means for excluding
Automatic doffing device.