JP3346304B2 - Splicing method and apparatus for spinning machine - 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 and an apparatus for splicing a spun machine for automatically splicing cut yarns.

[0002]

2. Description of the Related Art Conventionally, when a yarn is cut, a yarn drawn from a winding package or a yarn drawn from a separately prepared package (hereinafter, such a yarn is simply referred to as a seed yarn). ) Is passed between the constantly rotating delivery roller and the nip roller separated from the delivery roller, and is also passed through a spinning unit that performs spinning using a swirling air flow to prepare for the splicing. After that, the drive of the draft roller that was stopped was restarted, the sliver was supplied to the spinning unit, and the spinning unit was driven to restart the spinning of the yarn. The nip roller is brought into contact, the seed yarn is sandwiched between the delivery roller and the nip roller, sent out in the direction of the winding package, and the seed yarn and the spun yarn connected to the seed yarn are spun. Yarn splicing method and apparatus were to take around the winding package resumed rotary spinning machine is known.

[0003]

In the conventional piecing method of a spinning machine and the apparatus therefor, the nip roller is lifted up and separated from the constantly rotating delivery roller during the piecing operation. After the preparation, the nip roller was lowered at the same time as the splicing, and the seed yarn inserted into the spinning section was run by contacting the constantly rotating delivery roller. The lifting amount is not constant for each spinning unit, and there is variation in the running timing of the seed yarn for each spinning unit, or variation for each spinning unit during the rise time until the nip roller reaches the normal rotation speed. Therefore, there is a problem that stable splicing cannot be performed, a splicing error occurs, and the shape of the spliced portion is not stable.

An object of the present invention is to solve the problems of the above-described yarn splicing method and apparatus for a spinning machine.

[0005]

In order to achieve the above object, at the time of a splicing operation, an end of a seed yarn is arranged on a yarn discharge side of a spinning unit , and a yarn generated by the spinning unit is removed.
It is always rotating, pinching and feeding in the package direction
Delivery berry roller and constantly rotating delivery berry row
Of the nip roller that is always in contact with the
Of which, the seeds are located beside the constantly rotating nip rollers.
Yarn is moving, then, at the time of yarn splicing, the leading yarn, the constantly
Is moved to rotate to and nip roller direction, the normally
When the rotating delivery roller and the constantly rotating
Was sandwiched between the nip rollers are, are as hereinbefore to send out the winding package direction, clamping upon the yarn splicing operation, a leading yarn, the yarn produced by the spinning unit
A constantly rotating deli that feeds in the direction of the winding package
A belly roller and a constantly rotating delivery roller
Nip roller that is always in contact with
In addition, while moving to the side of the constantly rotating nip roller, release of the holding of the seed yarn, the seed yarn, the
The constantly rotating delivery roller and the constantly rotating delivery roller
And a yarn pulling lever capable of deflecting the seed yarn deflecting member between a position for holding the seed yarn and a position for releasing the seed yarn. It is constituted by a cylinder for rotating the shift lever.

[0006]

Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments unless it departs from the gist of the present invention.

[0007] Reference numeral 1 denotes a winding package held by a cradle arm 2, which is configured to come into contact with a friction roller 3 and rotate during a spinning process. Reference numeral 4 denotes a reversing roller, which is configured to come into contact with the winding package 1 separated from the friction roller 3 and reverse the winding package 1 during the yarn joining operation.

Reference numeral 5 denotes a suction member having a suction mouth 5a at its tip. The suction member 5 is rotated counterclockwise from the standby position rotated upward as shown in FIG. It is configured such that the yarn wound around the winding package 1 can be sucked and pulled out as a seed yarn by approaching the winding package 1. 6 is provided by a suitable driving device (not shown)
A yarn guide member configured to be able to advance and retreat in the direction of the yarn travel path, and provided on the upper surface of a yarn guide 6a, 6b having a slit into which the yarn is introduced, which is provided in a vertical direction, and an upper surface of the yarn guide 6a. And a cutter 6c capable of cutting the seed yarn and holding the cut seed yarn.

Reference numeral 7 denotes a transfer arm member having an arm 7b rotatable about a pivot 7a. At the tip of the arm 7b, there is provided a driving roller 7c and a driven roller 7d capable of coming in contact with and separating from the driving roller 7c. Is provided, and is configured so that the seed yarn can be gripped and released. Reference numeral 7e denotes a cylinder which is attached substantially vertically to the arm 7b, and has a piston rod 7e 'of the cylinder 7e, which has an extruding block 7f having a horizontally extending seed thread mounting portion 7f' at its tip. Is attached. 7g is a support frame attached substantially perpendicular to the arm 7b, and a pin 7h is attached to the tip of the support frame 7g substantially parallel to the arm 7b. Pin 7h
, A substantially L-shaped thread pulling lever 7i is pivotally supported.

A coil spring 7k is stretched between a through hole 7j formed at one end of the thread pulling lever 7i and a through hole 7b 'formed in the arm 7b. The drive roller 7c and the driven roller 7d disposed at the tip of the arm 7b holding the yarn end are moved from the standby position shown by the solid line in FIG. When the spindle member u1 is rotated to the yarn discharging side, the lever 7i 'of the yarn pulling lever 7i farther from the arm 7b is attached to the arm 7b by the elastic force of the coil spring 7k. It is configured to be energized.

The vertical portion 7f "of the push-out block 7f attached to the piston rod 7e 'of the cylinder 7e is connected to a lever 7i' farther from the arm 7b of the thread pulling lever 7i.
When the piston 7e 'is advanced by operating the cylinder 7e, the vertical portion 7f "of the pushing block 7f is
i, as shown by the solid line in FIG. 5, so that the lever 7i 'of the thread pulling lever 7i farther from the arm 7b is substantially horizontal against the elastic force of the coil spring 7k.
It is configured to rotate around the pin 7h. Conversely, when the piston rod 7e 'is retracted,
The elasticity of the coil spring 7k causes the yarn pulling lever 7 to move.
i is rotated clockwise from the position shown by the solid line in FIG. 5 to the position shown by the two-dot chain line, and the lever 7i 'of the yarn pulling lever 7i far from the arm 7b is substantially horizontal. It is configured to be substantially vertical from the state.

8, a suction head 8a moves from a standby position in a substantially vertical state as shown in FIG. 1 to a nozzle member u2 constituting a spinning section U and a spindle member u1 separated from the nozzle member u2. The suction head 8a is a piston of a cylinder 8d disposed at the tip of links 8b, 8c rotatable about pivot points 8b ', 8c'. Rod 8
It is attached to d '. From the standby position shown by the solid line in FIG. 2, the links 8b and 8c are rotated counterclockwise, and the cylinder 8d is operated appropriately, so that the suction head 8a is connected to the nozzle member u2 and the nozzle member u2. And the spindle member u1 separated from the spindle member u1.

Reference numeral 9 denotes a slack tube for storing a predetermined length of the seed yarn y 'unwound from the winding package 1 during the piecing operation.
It is connected to an air suction source (not shown) so that the seed yarn y ′ unwound from the can be sucked.

Reference numeral 10a denotes a constantly rotating delivery roller, and 10b denotes a nip roller rotatably supported by a suitable support lever 10c. In the present invention, the delivery roller 10a is always rotated. Contacting and rotating. Reference numeral 11 denotes a front roller constituting the draft device, and reference numeral 12 denotes a yarn guide disposed near the lower part of the slack tube 9.

The transfer arm member 7 and the air soccer member 8 described above are disclosed in Japanese Patent No. 2596297 filed earlier by the present applicant and disclosed in Japanese Unexamined Patent Publication No.
Since it is described in Japanese Patent Publication No. 218238, the detailed description thereof is omitted.

As shown in FIG. 1, a sliver supplied from a front roller 11 of the drafting device to a spinning section U which spins using a swirling air flow, comprising a spindle member u1 and a nozzle member u2. Is formed into a yarn y by the spinning unit U, and the yarn y is
Nip roller 10b, is fed in the direction of the winding package 1, contacts the friction roller 3, and is wound around the rotating winding package 1 while being traversed by a traversing device (not shown). .

When the yarn is cut, the rotation of the draft roller such as the back roller of the draft device is stopped, and
The sliver is cut between a draft roller that has stopped rotating and a draft roller such as a middle roller that continues rotating. The remaining sliver that has been cut and that continues to rotate on the draft roller side is supplied to the spinning unit U that is still being driven, and is formed into yarn. Thus, the yarn spun by continuing the spinning by the remaining sliver is sucked into the slack tube 9. After that, when the supply of the remaining sliver to the spinning unit U is completed,
The driving of the spinning unit U is stopped.

The winding package 1 in which the cut ends of the yarn are wound is separated from the friction roller 3,
Next, the reverse rotation roller 4 in a stopped state is brought into contact with the winding package 1. Next, the suction member 5 is rotated counterclockwise from the standby position shown by the two-dot chain line in FIG. 2, and the suction mouth 5a in the suction state is taken up by the winding package as shown by the solid line. 1, the yarn wound in the winding package 1 that has been reversed by the reverse rotation roller 4 is sucked as the seed yarn y ′, and the seed yarn y ′ is discharged.

Next, the suction member 5 for sucking and holding the seed yarn y 'pulled out from the winding package 1 is moved to the position shown in FIG.
Is rotated to the standby position shown by the two-dot chain line, and the seed yarn y ′ unwound from the winding package 1 is moved in advance in the yarn traveling path direction by the yarn guide member 6. It is introduced into the guides 6a and 6b to maintain the seed yarn y 'at a predetermined position. Next, the cutter 6c of the yarn guide member 6
Is operated to cut and hold the seed yarn y ′.

Next, the driving roller 7c and the driven roller 7d of the transfer arm member 7 are inserted between the yarn guides 6a and 6b of the yarn guiding member 6, and the yarn is driven by the driving roller 7c and the driven roller 7d of the transfer arm member 7. The seed yarn y 'held by the cutter 6c of the guide member 6 is gripped, and then the grip of the seed yarn y' by the cutter 6c is released, and the seed yarn y 'from the yarn guide member 6 to the transfer arm member 7 is released. Is passed. Also,
Nozzle member u2 constituting spinning section U and nozzle member u2
The suction head 8a of the air sucker member 8 is arranged between the suction head 8a and the spindle member u1 separated from the spindle member u1.

Next, the transfer arm member 7 is rotated upward to be driven by the drive roller 7c holding the seed yarn y 'of the transfer arm member 7 as shown by a two-dot chain line in FIG. Roller 7d is rotated by spinning unit U
Is disposed on the yarn discharge side of the spindle member u1, and
The seed yarn y ′ unwound from the winding package 1 is sucked and stored in the slack tube 9 in the suction state. In the process of arranging the drive roller 7c and the driven roller 7d holding the seed yarn y 'of the transfer arm member 7 on the yarn discharge side of the spindle member u1 of the spinning unit U, the seed yarn y' is pushed out of the pushing block 7f. Is configured to be mounted on the seed yarn mounting portion 7f ′.

The driving roller 7c and the driven roller 7d holding the seed yarn y 'of the transfer arm member 7 are
After being disposed on the yarn discharge side of the spindle member u1 of the spinning unit U, or by driving the driven roller 7c and the driven roller 7d holding the seed yarn y 'of the transfer arm member 7,
In the process of arranging the spindle member u1 of the spinning section U on the yarn discharge side, the retracted piston rod 7e 'shown by a solid line in FIG. 5 is retracted, and the yarn is moved by the elastic force of the coil spring 7k. Move the lever 7i to the arm 7
In FIG. 5, the lever 7i ′ of the yarn pulling lever 7i farther from b is changed from a substantially horizontal state to a substantially vertical state.
Rotate clockwise so that the tip is
c and the driven roller 7d, and the seed thread y 'placed on the seed thread placement section 7f' of the extrusion block 7f.
Is pulled toward the arm 7b, and the seed yarn y 'is bent between the drive roller 7c, the driven roller 7d, and the slack tube 9 which sucks the seed yarn y'. in this way,
In the state where the seed yarn y 'is bent, the seed yarn y' is, as shown in FIG. 6, on the side of the nip roller 10b,
It is configured to contact the delivery roller 10a.

Thereafter, the drive roller 7c of the transfer arm member 7 arranged on the yarn discharge side of the spindle member u1 is driven to drive the drive roller 7c and the driven roller 7c.
The seed yarn y ′ gripped by the d
It is sent out in one direction and inserted into the spindle member u1 in cooperation with the suction force of the air sucker member 8.

After the threading of the seed yarn y 'to the spindle member u1 is completed, the air sucker member 8 is returned to the standby position, and the driven roller 7d of the transfer arm member 7 is separated from the driving roller 7c to form a driving roller. 7c and the driven roller 7d release the gripping of the seed yarn y '. Next, the spindle member u1 and the nozzle member u2 are connected, and the drive of the draft roller that has been stopped is restarted to supply the sliver to the spinning unit U and drive the spinning unit U to perform the yarn joining operation. Then, the spinning of the yarn is restarted. After a predetermined time after the drive of the draft roller is restarted, the cylinder 7e of the transfer arm member 7 is operated to advance the piston rod 7e ', and the vertical portion 7f "of the push block 7f". Thus, the thread pulling lever 7i is rotated so that the lever 7i 'of the thread pulling lever 7i remote from the arm 7b is substantially horizontal, against the elastic force of the coil spring 7k.
i, the seed yarn y 'drawn to the arm 7b side
To release. As described above, when the seed yarn y ′ pulled toward the arm 7b is released by the yarn pulling lever 7i, the seed yarn y ′ moves to the nip roller 10b side along the delivery roller 10a, and is always It is inserted between the contacting nip roller 10b and the delivery roller 10a, is sandwiched by the delivery roller 10a and the nip roller 10b, and is sent out in the direction of the winding package 1. Thus, one cycle of the piecing operation is completed. After the completion of the piecing operation, the transfer arm member 7 is returned to the standby position.

In the present invention, in the piecing operation,
As in the prior art, the nip roller 10b is always lifted and separated from the delivery roller 10a without constantly moving the nip roller 10b.
During the splicing operation, the seed yarn y ′ is moved by a seed yarn deflecting member including a yarn pulling lever 7i and a cylinder 7e provided on the transfer arm member 7.
It is arranged beside the rotating nip roller 10b in contact with the delivery roller 10a, and then releases the holding of the seed yarn y 'by the seed yarn deflecting member in conjunction with the resumption of the driving of the draft roller or the spinning unit U. Then, the seed yarn y ′ is inserted between the nip roller 10b and the delivery roller 10a, and the delivery roller 10a and the nip roller 10a are inserted.
b, and sent out in the direction of the take-up package 1. Therefore, as in the conventional case, the variation in the amount of lifting of the nip roller between the respective spinning units and the rise time until the nip roller reaches the normal rotation speed are reduced. It is possible to solve problems such as a splicing error and instability of the shape of the spliced portion due to variations and the like.

In the present invention, since the nip roller 10b is not lifted during the piecing operation, the delivery roller 10a of the nip roller 10b is not lifted.
The step of separating from the roller or contacting the delivery roller 10a and its control can be omitted, the structure and the control system can be simplified, and the seed thread including the thread pulling lever 7i and the cylinder 7e provided on the transfer arm member 7 can be omitted. Stable piecing can be performed only by controlling the deflecting member.

Further, after releasing the seed yarn y 'moved to the deflection position by the seed yarn deflecting member, the seed yarn y' is immediately pinched by the delivery roller 10a and the nip roller 10b, and at a constant speed, Since it is sent out in the direction of the winding package 1, a stable splicing operation with few splicing errors can be performed.

In the embodiment described above, the suction head 8a of the air sucker member 8 is arranged between the nozzle member u2 constituting the spinning section U and the spindle member u1 separated from the nozzle member u2. The seed yarn y ′ sent by the transfer arm member 7 is transferred to the spindle member u.
Although an example in which the nozzle member u1 and the spindle member u2 are inserted is shown, the seed yarn y ′ can be inserted into the spinning unit U without separating the nozzle member u1 and the spindle member u2. The splicing method and apparatus of a spinning machine according to the present invention can be applied to a spinning machine having various spinning units using swirling airflow.

[0029]

Since the present invention is configured as described above, it has the following effects.

Problems such as errors in splicing errors and instability in the shape of splicing portions due to variations in the amount of lifting of the nip rollers between the spinning units and variations in the rise time required for the nip rollers to reach a normal rotation speed. Can be solved.

Since the nip roller is not lifted during the piecing operation, the process of separating the nip roller from the delivery roller or contacting the delivery roller and its control can be omitted, and the structure and control system can be simplified. Only by controlling the seed yarn deflecting member, stable yarn splicing can be performed.

After releasing the seed yarn moved to the deflection position by the seed yarn deflecting member, the seed yarn is immediately pinched by the delivery roller and the nip roller, and is sent out at a constant speed in the direction of the winding package. In addition, a stable piecing operation with few piecing errors can be performed.

With a simple structure of the seed yarn deflecting member composed of the yarn pulling lever deflectable between the position where the seed yarn is held and the position where the seed yarn is released and the cylinder that rotates the yarn pulling lever, there is little splicing error. A stable piecing operation can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a spinning machine as an example to which a piecing method for a spinning machine according to the present invention is applied.

FIG. 2 is a schematic side view of a spinning machine as an example to which the piecing method of the spinning machine according to the present invention is also applied.

FIG. 3 is a schematic side view of a spinning machine as an example to which the piecing method of the spinning machine of the present invention is applied.

FIG. 4 is a perspective view of a main part of a transfer arm member of the piecing apparatus of the spinning machine of the present invention.

FIG. 5 is a front view of a main part of a transfer arm member of the piecing apparatus of the spinning machine according to the present invention.

FIG. 6 is a plan view of a main part of a transfer arm member and a spinning unit of the piecing apparatus of the spinning machine according to the present invention.

[Explanation of symbols]

 1 ... Rewinding package 7 Transfer arm member 7i Thread pulling lever 7e・ Cylinder 10a ・ ・ ・ ・ ・ ・ ・ ・ Delivery roller 10b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Nip roller

Claims (3)

(57) [Claims] In a splicing operation, an end of a seed yarn is arranged on a yarn discharge side of a spinning unit and is generated by a spinning unit.
It always rotates, holding the warped yarn and feeding it in the direction of the winding package.
Delivery roller and constantly rotating delivery roller
-Niplow that is always in contact with the roller and constantly rotating
Of Ra, the move the leading yarn on the side of the regular spinning to have a nip roller, then during piecing, the leading yarn, before
Move in the direction of the constantly rotating nip roller,
The constantly rotating delivery roller and the constantly rotating delivery roller
A yarn joining method for a spinning machine, characterized in that the yarn is pinched by a rotating nip roller and sent out in a winding package direction. 2. A spun yarn is spun by a spinning unit during a splicing operation.
Always hold the generated yarn and send it to the winding package.
When the delivery roller is spinning and always rotates
A rotating roller that is in constant contact with the delivery roller
Of the normally rotating nip roller, release the holding of the seed yarn, and move the seed yarn to the constantly rotating delivery roller.
A yarn splicing device for a spinning machine, comprising a seed yarn deflecting member that is held between the nip roller and the constantly rotating nip roller . 3. The seed yarn deflecting member comprises a yarn pulling lever deflectable between a position for holding and releasing the seed yarn and a cylinder for rotating the yarn pulling lever. A yarn splicing device for a spinning machine according to item 1.