JP2734804B2 - Operating method of yarn joining bogie in core yarn spinning device using elastic yarn as core yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for operating a yarn splicing cart in a core yarn spinning apparatus using an elastic yarn as a core yarn.

[0002]

2. Description of the Related Art The applicant of the present invention has provided an air spinning nozzle for twisting a drafted fiber bundle downstream of a drafting device for each weight by a swirling airflow of compressed air to produce a binding yarn, and winding the yarn into a package. The pneumatic spinning device was developed first. Each weight of the pneumatic spinning device is provided with a slab catcher for detecting a yarn defect of a manufactured yarn and a cutter for cutting the yarn based on a detection signal thereof. Further, the pneumatic spinning device is provided with a yarn splicing carriage that splices the yarn end on the spinning side and the yarn end on the winding side of the cut yarn so that the yarn can be run. In particular, when the yarn splicing truck stops at the weight that requires the yarn splicing, the suction mouth subsequently operates to move to the vicinity of the package, suck the yarn end on the winding side, and then return to the home position, and thereafter, The suction nozzle operates and moves to the exit position of the pneumatic spinning nozzle, sucks the yarn end on the spinning side, returns to the origin position, and then the yarn splicing part operates to complete the yarn splicing. Is automatically performed continuously.

On the other hand, the present applicant has developed a spinning apparatus for producing a core yarn using an elastic yarn as a core yarn by improving the above-mentioned air spinning apparatus. In this core yarn spinning device, an elastic yarn supply device is provided for each weight, and the elastic yarn is supplied from the front roller while stretching the elastic yarn with respect to the fiber bundle drafted by the draft device, so that the elastic yarn becomes a core yarn. The core yarn is produced by wrapping the outside with fibers of a fiber bundle.

[0004]

However, in the core yarn spinning device, since the elastic yarn must be manually passed through the air spinning nozzle at the time of splicing, the yarn splicing carriage of the air spinning device is inserted into the core yarn spinning device. And the yarn splicing cart was automatically operated continuously as described above, so that the yarn end on the spinning side was spliced without elastic yarn, and abnormal yarn without elastic yarn was manufactured. There are problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of operating a yarn joining bogie in a core yarn spinning apparatus using an elastic yarn as a core yarn, which can prevent the production of an abnormal yarn having no elastic yarn. is there.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a spinning device for producing a core yarn having an elastic yarn as a core yarn, which is moved to a weight required for splicing and stopped by a suction nozzle. In the operation method of the piecing bogie that performs the piecing by guiding the yarn end from the outlet of the air spinning nozzle to the piecing portion, the piecing vehicle stops at the weight required for the piecing, and then the suction nozzle is moved to the air spinning nozzle. When the vehicle reaches the exit position, the automatic driving is interrupted.

[0007]

When the piecing carriage stops at the weight where piecing is required, and then the suction nozzle reaches the outlet position of the pneumatic spinning nozzle, the automatic operation is interrupted.

Accordingly, the elastic yarn can be passed through the air spinning nozzle by manual operation during that time, and after the elastic yarn is passed through the air spinning nozzle, the automatic operation is restarted. Since the yarn is spliced in a state where the yarn is present, an abnormal yarn having no elastic yarn is not produced.

[0009]

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

In FIGS. 1 and 2, reference numeral 1 denotes a weight (spinning unit) of a plurality of spinning devices arranged in parallel, and a sliver 4 supplied from a rear can 2 through a guide 3 is provided above each weight 1. A draft device 6 for aligning with a predetermined fiber bundle 5 is provided.

The draft device 6 is mainly composed of a back roller 7, an apron 8 and a front roller 9. Downstream of the draft device 6, an elastic yarn supply device 10 described later is provided.
Is produced by twisting the elastic yarn 11 supplied from the fiber bundle together with the drafted fiber bundle by the action of the swirling airflow of compressed air to produce a core yarn 12 having the elastic yarn 11 as a core yarn and the outside wrapped with the fibers of the fiber bundle 5. An air spinning nozzle 13 is provided.

Downstream of the air spinning nozzle 13, a delivery roller 14 for the manufactured core yarn 12 is provided.
A winding unit 16 for winding the core yarn 12 fed from the delivery roller 14 into a package 15 is provided at a lower part of the front surface of the winding unit 16. A slab catcher 17 is provided between the delivery roller 14 and the winding section 16 to detect a yarn defect such as a yarn unevenness of the core yarn 12 fed, and a signal from the slab catcher 17 causes the back of the draft device 6 to return. The driving of the roller 7 is stopped, and the cutter 25 disposed between the pneumatic spinning nozzle 13 and the delivery roller 14 is operated to cut the core yarn 12. Therefore, when a yarn break occurs, the fiber bundles 5 downstream of the back roller 7 are torn off from the back roller 7 because the components other than the back roller 7 are driven, and the suction provided in the vicinity of the cutter 25 is cut off. The suction is removed from the mouth 26.

On the other hand, above the draft device 6, the elastic yarn 1
One supply device 10 is provided, and the elastic yarn 11 supplied from the supply device 10 is introduced into the air spinning nozzle 13 together with the fiber bundle 5 from the front roller 9. The supply device 10 is provided with a common drive shaft 19 which is wound around the juxtaposed weights 1 and is driven to rotate by one motor 18. The drive shaft 19 drives a package 20 of the elastic yarn 11. A rotating roller 21 is attached to each weight.

The package 20 of the elastic yarn 11 has a horizontal shaft 2.
2 is rotatably supported by a cradle arm 23 which is attached to the upper roller 2 so as to be able to freely ascend.
It comes into contact with it and receives rotation. And
A stopper 24 for stopping rotation of the package 20 when the core yarn 12 breaks is provided between the rotating roller 21 and the package 20 so as to be freely inserted and removed.

More specifically, the stopper 24 is supported by a support shaft 27.
The stopper 24 is adapted to be rotatably supported, and the tip of the stopper 24 is inserted and removed between the rotating roller 21 and the package 20 by the rotation. The stopper 24 is a rotating roller 2
It is preferable that the shape is such that it is inserted between the rotating roller 21 and the package 20 in a non-contact manner with the rotating roller 21.

A spring 28 for urging the stopper 24 in the insertion direction is connected to the stopper 24. The stopper 24 is normally held against the spring 28 in a state where the stopper 24 is removed from between the rotary roller 21 and the package 20. A solenoid 29 that is turned off by a signal from the slab catcher 17 and inserts the stopper 24 between the rotating roller 21 and the package 20 is connected.

When the solenoid 29 is turned off and the stopper 24 is inserted between the rotating roller 21 and the package 20, the electromagnet 29 constituting the solenoid 29 is turned off.
a and the suction plate 29b are largely separated from each other, so that even if the solenoid 29 is turned on, the stopper 24 cannot be removed from between the rotary roller 21 and the package 20 by the electromagnetic force. . A manual operation lever 30 for removing the stopper 24 from between the rotating roller 21 and the package 20 is attached to the stopper 24.

Reference numeral 31 denotes a yarn guide for guiding the elastic yarn 11 unwound from the package 20 to the front roller 9, and the presence or absence of the elastic yarn 11 fed to the yarn path downstream of the yarn guide 31. And a clamper 33 that grips the elastic yarn 11 when the core yarn 12 breaks. Sensor 3
Reference numeral 2 denotes an optical sensor or the like. The signal from the sensor 32 indicating that there is no elastic yarn stops the driving of the back roller 7 of the draft device 6 in the same manner as the signal from the slab catcher 17, and also includes the air spinning nozzle 13 and the delivery roller 14 And the core yarn 12 is cut by operating the cutter 25 disposed between the core yarn 12 and the core yarn 12.

The clamper 33 includes a fixed piece 33a and a shaft 34.
The movable piece 33b is rotatably supported by the movable piece 33b. One end of the movable piece 33b is connected to the stopper 24 via a link 35, and is movable with the fixed piece 33a in conjunction with the operation of the stopper 24 in the insertion direction. The elastic yarn 11 is configured to be gripped between the piece 33b.

The frame 1a of the weight 1 of the spinning device is formed to have a C-shaped cross section with an open front surface, and a yarn splicing truck 39 is provided along a rail 37, 38 so as to run freely in an internal space continuous in the longitudinal direction. ing. The yarn splicing cart 39 is rotated from the standby position A to the exit position of the air spinning nozzle 13 shown by a two-dot chain line in FIG. 2 to suck the yarn end on the spinning side, and returns to the standby position A. A suction nozzle 41 for guiding the yarn end to the yarn joining portion 40, and by rotating from the standby position B to the vicinity of the package 15 of the winding portion 16 to suck the yarn end on the winding side and returning to the standby position B A suction mouth 42 for guiding the yarn end to the yarn joining portion 40 is provided to be rotatable.

A cam 4 for driving the suction nozzle 41 and the suction mouth 42 is provided on the yarn joining carriage 39.
3. A cam motor M for driving the cam 43, a blower for generating suction, and the like are provided. Yotei trolley 39
Is provided with a nozzle detection sensor 44 for detecting when the suction nozzle 41 moves from the origin position A to the exit position of the pneumatic spinning nozzle 13 and the cam 4
A one-cycle end detection sensor 45 for detecting that one rotation of the motor 3 has been completed is provided. Further, the yarn joining cart 39 is provided with a fixed position detection sensor 46 for detecting that it has stopped at the fixed position of the weight 1 and a push button type operation switch PB for starting the yarn joining operation (not shown). ). While the cam 43 makes one rotation, the suction mouth 42 first completes its operation, and then the suction nozzle 4
1 is completed.

Then, the yarn joining cart 39 is a weight 1 that needs a yarn joining.
To stop and start the splicing operation.
The operation method according to the present invention is characterized in that the automatic operation is interrupted when the piecing carriage 39 stops at the weight 1 requiring piecing, and thereafter, when the suction nozzle 41 reaches the outlet position C of the air spinning nozzle 13. I have.

Next, a specific operation method of the yarn joining cart 39 will be described together with the operation of the core yarn spinning device. The package 2 is driven by the rotating roller 21 in the direction in which the elastic yarn 11 is unwound, and the unwound elastic yarn 11 is
While being given a predetermined tension by the speed difference between the rotating shaft 21 and the rotating roller 21, the fiber bundle 5 after drafting is introduced from the front roller 9 to the air spinning nozzle 13 and twisted. The core yarn 12 thus manufactured is fed to a winding unit 16 via a delivery roller 14 and wound on a package 15.

In this operating state, the slab catcher 17
Detects the yarn defect of the core yarn 12, the cutter 25 is operated by this signal to cut the core yarn 12, and the back roller 7 of the draft device 6 is stopped,
The stopper 24 of the elastic yarn supply device 10 is rotated by the force of the spring 28 when the solenoid 29 is turned off.
And the package 20. Further, the movable piece 33b of the clamper 33 closes with respect to the fixed piece 33a in conjunction with the operation of the stopper 24, and grips the elastic thread 11.

On the other hand, when the back roller 7 stops, the fiber bundle 5 downstream of the back roller 7 is torn off from the back roller 7,
The elastic yarn 11 downstream from the clamper 33 is torn off from the clamper 33 by the gripping of the clamper 33, and both of the elastic yarns 11 are sucked and removed from the suction port 26.

In this manner, the weight 1 becomes a weight that requires splicing, and the yarn splicing carriage 39 moves to the weight 1 that requires splicing by a yarn splicing request signal (a signal from the slab catcher 17) issued from the weight 1. Then, after the suction mouth 42 operates, the suction nozzle 41 operates to reach the outlet position of the pneumatic spinning nozzle 13. Here, in the operation method of the yarn joining bogie in the ordinary pneumatic spinning device, the yarn joining operation is automatically performed continuously, but in the method of operating the yarn joining bogie in the core yarn spinning device according to the present invention, the automatic operation is performed. Is interrupted.

FIG. 4 shows a sequence circuit for carrying out this operation.
, The relay coil R1 is excited, the relay contact R1 is closed, and the
The self-holding is performed until the yarn joining operation of the cycle is completed (the relay contact R5 is opened). Further, the yarn joining cart 39 stops at a fixed position with respect to the weight 1 requiring the yarn joining, and the fixed position detection sensor 46 detects this and emits a signal, so that the relay coil R2 is excited and the relay contact R2 is closed and is held by itself until one cycle of the yarn joining operation is completed.

In this sequence circuit, the relay contact (a contact) R3 and the relay contact (b contact) R4 are connected in parallel to the relay coil circuit portion of the cam motor. When it stops at 1, the cam motor M immediately rotates on the condition of signals from the slab catcher 17 and the fixed position detection sensor 46, and starts the yarn joining operation. By the rotation of the cam motor M, the suction mouth 42 first moves from the origin position B to the vicinity of the package, sucks the winding end on the winding side, and then returns to the origin position B. Subsequently, the suction nozzle 41 is operated from the standby position A to operate the air spinning nozzle 1.
3 is reached, the nozzle detection sensor 44
Is detected and the relay coil R4 is excited, so that the relay contact R4 is opened and the relay coil MC of the cam motor M is opened.
Are de-energized, the relay contact MC is opened, the cam motor M stops, and the automatic operation is interrupted.

Since the yarn splicing truck stops the suction nozzle at the exit position of the air spinning nozzle and interrupts the yarn splicing operation, the operator can manually pass the elastic yarn 11 through the air spinning nozzle 13 or the like. , A normal core yarn 12 is spun, and the yarn end of the core yarn 12 is
Then, the operation switch PB may be turned on. Then, the relay coil R3 is excited, the relay contact R3 is closed, and the relay coil R3 is self-held until one cycle of the yarn splicing operation is completed. Therefore, the rotation of the cam motor M moves the suction nozzle 41 to the return position A, and spins. The outgoing yarn end is guided to the yarn splicing section 40 to complete one cycle of the yarn splicing operation. At the same time, a detection signal from the one-cycle end detecting sensor 45 is received, and the control device (not shown) restarts the automatic operation. As a result, the yarn joining section 40 automatically performs the yarn joining.
When the piecing operation is completed, the piecing vehicle 39 automatically moves to the next piecing request weight.

[0030]

In summary, according to the present invention, the automatic operation is interrupted when the piecing bogie stops at the weight requiring piecing, and thereafter, when the suction nozzle reaches the outlet position of the pneumatic spinning nozzle, In the meantime, the elastic yarn can be manually passed through the air spinning nozzle, and after passing the elastic yarn through the air spinning nozzle, automatic operation is restarted, so that the yarn end on the spinning side has elastic yarn. Since the yarn is spliced, it is possible to reliably prevent a problem that an abnormal yarn having no elastic yarn is manufactured.

[Brief description of the drawings]

FIG. 1 is a front view showing a core yarn spinning device and a yarn splicing cart for carrying out the method of the present invention.

FIG. 2 is an enlarged sectional view of FIG.

FIG. 3 is a partial cross-sectional view showing a state in which a suction nozzle of the yarn joining vehicle sucks a yarn end on a spinning side.

FIG. 4 is a diagram showing an example of a sequence circuit for operating the yarn joining cart.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weight 11 Elastic thread 12 Core yarn 13 Pneumatic spinning nozzle 39 Yarn splicer 41 Suction nozzle

Claims (1)

(57) [Claims] In a spinning apparatus for producing a core yarn having an elastic yarn as a core yarn, the yarn moves to a weight required for splicing, stops, and a suction nozzle guides a yarn end from an outlet of an air spinning nozzle to a yarn splicing portion. In the method of operating a piecing bogie that performs piecing, the automatic driving is interrupted when the piecing truck stops at a weight that requires piecing, and thereafter, when the suction nozzle reaches the outlet position of the air spinning nozzle. How to drive a piecing trolley.