JPH06144705A - Crossing yarn cutting method of multi-cup winder - Google Patents

Abstract

PURPOSE:To provide the method to efficiently cut the crossing yarn of a multi- cup winder which is obtained by a simple and sure yarn winding method. CONSTITUTION:A cradle arm 2 taps a limit switch by being turned to the specified position during the doffing operation, a cutter 11 arranged in the forward and lower part of a bobbin B is actuated in an interlocking manner therewith, and a cutting blade 14 is brought close to the space S between the end surfaces of the bobbin B. When the cutter 11 is turned to the specified position, the limit switch is pressed to stop the driving of an air motor 15. At the same time, a timer starts the operation. In this moment, the cutting blade 14 is brought close to the space before the bobbin B is stopped by a brake, and the rotation is not yet stopped, and the cutting blade 14 which is moved between the bobbins is brought into contact with the crossing yarn (y) crossing between the bobbins and cuts the yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting bridging yarns connecting bobbins generated during winding of a multi-cup winder.

[0002]

2. Description of the Related Art Generally, in a multi-copper winder, a winding is started by providing a catch ring at the end of a bobbin or engraving a slit and threading each of them (Actual No. Sho 56-173559). Publication, Jikken 3-867
No. 6 publication).

However, in such a thread hooking method, since the threading is performed on each catch ring and the like, the work time is long and troublesome, and the cutting operation for removing the thread gripped by the claw of the catch ring or the like is required. Necessary and poor workability. If the catch ring adhered to the bobbin is used for a long period of time, the catch will come off and a gap will be created between the catch ring and the bobbin, which will reduce the threading success rate. If the catch ring is scratched or dropped during handling, the surface of the catch ring will be burred, and the threading success rate will be further reduced, and the work time will be longer due to failure and productivity will be poor. In addition, there is a problem that the labor cost and the investment amount increase because the repair and the renewal are performed regularly in order to maintain the success rate of threading.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and provides a method for efficiently cutting the transition yarn of a multi-cup winder obtained by extremely simple and reliable yarn hooking. It is a thing.

[0005]

That is, according to the present invention, a plurality of yarns are hooked at the same time by a yarn catching and cutting device provided on a bobbin holder, and each yarn is transferred to and wound on a corresponding bobbin. In the multi-cup winder, a cutter is arranged in front of the mating surface between the bobbins, and when winding is completed, the bobbin holder is rotated to move the wound thread body to a predetermined position in a rotating state, and then A crossover yarn cutting method for a multi-cup winder, characterized in that a cutter is moved to a mating surface of a bobbin to cut a crossover yarn continuous between wound yarn bodies.

[0006]

[Operation] When the multiple yarns are threaded together on the end of the spindle at the same time, the end of the package moves to each bobbin and each bobbin winds the package (rolled body). The cutter moves toward the mating surface between the bobbins that are still rotating and approaches. For this reason, the crossover thread that crosses between the bobbins generated when the bobbins are transferred to each bobbin during threading is reliably and easily cut.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. Figure 1
Is a schematic perspective view of an apparatus for carrying out the present invention, and FIGS. 2 (a) and 2 (b) are explanatory views of the operation of the present invention.

In the figure, 1 is a cradle arm type 2
In the cup type winder, a spindle 3 driven by a motor (not shown) is provided at the tip of a cradle arm 2 whose rear end is rotatably supported. A traverse box 4 is disposed on the machine base 20 so as to face the cradle arm 2, and a free roller 5 that rotates in contact with the bobbin B inserted into the spindle 3 is provided between them.

Cradle type winder 1 as described above
When the spindle 3 reaches a certain number of rotations, the reversing type thread hooking arm 6 is reversed to the bobbin side, and the two yarns Y drawn by the suction device (not shown) are thread grasping springs provided at the tip of the spindle 3. It is gripped by the (claw) 7 and cut into the cutter edge 8 located in the vicinity thereof.

The two yarns Y that have been cut and gripped move to the bobbin side and wind around, are sent to the intermediate point of each bobbin (the midpoint of the traverse) where the tension becomes low, are gripped by the traverse guide, and are traversed by each bobbin B. The yarn layer is formed.

When a predetermined amount of yarn is wound up to form a completely wound yarn package P in this way, the cradle arm 2 causes the fluid pressure cylinder 9 (a cradle by means such as an air motor or an actuator) in response to the completion winding signal. The arm itself or its supporting rod may be rotated) so that the package P is released and at the same time inverted.
The yarn is cut and taken up by a suction device (not shown).

After that, when the cradle arm 2 reaches a predetermined position by the cylinder 9, the limit switch 10 is hit and the brake is applied in conjunction with this, and the limit switch 10 is pressed.
The crossover yarn cutter 11 provided at the front portion (lower portion) corresponding to the position of the end surface serving as the mating surface of the two bobbins B is operated, and the cutting blade 14 at the tip thereof approaches between the end surfaces of the bobbins B.

When the cutter 11 rotates to a predetermined position and the cutting blade 14 at its tip moves to a position close to the end faces of the bobbin, the limit switch 18 is pushed to push the air motor 15.
Is stopped and the crossover yarn y is cut. At the same time, the timer starts operating.

At this time, the approach of the cutting blade 14 is made before the bobbin B is stopped by the brake before the rotation of the bobbin B is stopped, so that the cutting blade 14 moved between the bobbins.
Touches the crossover yarn y crossing between the bobbins and cuts it.

The crossover yarn cutter 11 comprises a cutter main body 13 having a cutter support 12 fixed to a drive shaft 16 of an air rotor or an air motor 15 and having a cutting blade 14 held by the support 12. Although used, the cutter body or the cutting blade may be directly rotated. Reference numeral 17 is a bracket that supports an air motor or the like.

A heater type can also be used as the cutter. Further, the bobbin is chamfered on the outside (edge) of the end face so that the mating surface becomes V-shaped when the two bobbins are fitted together. It is preferable because the crossover yarn y can be cut easily and more stably and reliably.

Next, when the timer times out, the air motor 15 reversely rotates, the cutter 11 returns to its original position and the limit switch 19 is pushed, and the air motor 15 stops driving due to this signal.

In the bobbin (package) which has been subjected to such an operation, since the transition yarn between the bobbins is automatically cut at the time of the doff, it is possible to greatly reduce the yarn hooking time and improve the productivity and workability. At the same time, the obtained package is almost the same as that of the conventional catching method,
Therefore, it can be used as usual without causing any particular problem.

The spindle type driven by the bobbin holder has been described above, but the friction type in which the bobbin holder is rotated in contact with the driving roller and the cradle arm type are not limited to these types, and other types can be used as well. .

[0020]

As described above, according to the present invention, the work of the catch ring and the like is troublesome and time consuming, and without using extra parts, the thread is easily hooked and the success rate is high. It is possible to put the multi-thread yarn threading system into practical use, and it is possible to achieve a remarkable effect that the workability and the productivity are good, and the facility cost, the labor cost, etc. can be significantly reduced.

[Brief description of drawings]

1 is a schematic perspective view of an apparatus for carrying out the present invention.

FIG. 2A is an explanatory view of the operation of the present invention. (B) It is operation | movement explanatory drawing of this invention.

[Explanation of symbols]

 2 Cradle arm 3 Spindle 6 Thread hooking arm 7 Thread gripping spring 8 Cutter edge 9 Fluid pressure cylinder 11 Cutter 15 Air motor

Claims (2)

[Claims] 1. A multi-cup winder in which a plurality of yarns are simultaneously threaded by a yarn catching and cutting means provided on a bobbin holder and each yarn is transferred to a corresponding bobbin and wound up. A cutter is placed in front of the mating surface, and when winding is completed, the bobbin holder is rotated to move the wound thread body to a predetermined position in a rotating state, and then the cutter is moved to the bobbin mating surface. A method for cutting a jumper thread in a multi-cup winder, characterized in that a jumper thread that is continuous between winding yarns is cut. 2. The method for cutting crossover yarns of a multi-cup winder according to claim 1, wherein the outer end surface of the bobbin is chamfered so that the mating surface between the bobbins forms a V shape.