JPH11286370A - Thread winding method and swing arm type winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the noise and the cutting of thread by the vibration by surely applying the torque of a bobbin from the start of winding to the stable area. SOLUTION: An electromagnet 10 is worked when a foot switch is pedalled, and a bobbin which strongly pulls a swing arm 7 is firmly kept into contact with a drive roller. When the thread is wound on the bobbin and the winding diameter is thickened, the swing arm 7 is separated from the drive roller. On this occasion, a permanent magnet 13 is worked together with the swing arm 7, a shaft 15 is slided, a spring 16 is compressed, and the bobbin is pressed and kept into contact with the drive roller by the force of the compressed spring and the ordinary bearing. When the winding thickness is further increased, a gap A between a stopper 21 and a spring fixing nut 18 is filled up, the permanent magnet 13 is not slided more, and finally the bobbin is closely kept into contact with the drive roller by the attraction force of the permanent magnet 13. Then the permanent magnet 13 is released from the swing arm 7, and the thread is wound only by the ordinary bearing pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding method and a swing arm type winding device.

[0002]

2. Description of the Related Art Synthetic fiber winding methods or winding devices are roughly classified into two types, a surface drive type and a spindle drive type. In the present invention, a winding part of the surface drive type is constituted by a swing arm. An object of the present invention is to solve the drawbacks that often appear in a swing arm type winding method or winding device.

FIG. 5 is a front view of a conventionally known process of taking an undrawn yarn for taking out a melt-spun yarn. The melt-spun yarn 1 is cooled, an oil agent is applied by an oiling roll 2, divided into right and left by a separate roll 5 via rolls 3 and 4, traversed to a winding width determined by a traverse 6, and wound around a bobbin 8. Taken.

In the conventional winding machine, when the yarn 1 is wound around the bobbin 8 at the time of the first yarn winding as shown in FIG. 6, the bobbin 8 is driven by the drive roll 11 to rotate at a normal speed. If it is, it will be wound continuously without thread breakage.

However, it is sufficient that a driving force (surface pressure) sufficient to follow the bobbin is given by the swing arm, but the bobbin surface in a state where the yarn is wound on the entire surface of the bobbin and the entire bobbin by the yarn There is a difference in the coefficient of friction between the uncovered bobbin surface and the bobbin.In general, the bobbin is made of paper material. Has a small friction coefficient on the bobbin surface. Since the friction coefficient for driving the bobbin immediately after the start of winding is smaller than the surface pressure in a stable winding state in the yarn winding, the bobbin often slips and does not reach a normal rotation speed.

Therefore, conventionally, a large surface pressure is applied so that the bobbin rotates sufficiently before the yarn is wound up, and when the rotation is completely stabilized, the surface pressure is reduced to a normal optimum yarn winding. Return to surface pressure has been implemented. Generally, the initial surface pressure is 1.0 to
It is 1.5 kg, and the surface pressure is too low to rotate an empty bobbin that has not been wound up under normal surface pressure.

However, when the surface pressure is reduced from the point where the rotation has been completed, the number of rotations of the bobbin gradually decreases, and another problem occurs that the yarn is not wound around the bobbin unless the yarn is wound around the bobbin early.

In order to overcome this, a device has been devised in which the surface pressure is increased until the yarn is wound, and the surface pressure is returned to a normal optimum yarn winding surface pressure when winding is started.

More specifically, as shown in FIG. 6, the electromagnet 10 is fixed in the vicinity of the winding start position of the swing arm, the electromagnet is activated during threading, the surface pressure is increased, and the electromagnet is turned on and off. The operation is performed by operating a foot by a foot switch 9 provided on the lower floor surface of the vehicle.

[0010] While the surface pressure is large, threading is performed and the thread is wound around the bobbin. At this time, the yarn is still thinly wound and has not grown into a stable package for sufficiently driving the bobbin, so that the rotation of the bobbin is slowed down and the swing arm 7 is pushed by hand to compensate for the shortage of surface pressure. It was necessary to perform a complicated operation of manually holding the package until the package became stable and entering the stable area, and then proceeding to the next swing arm operation.

[0011]

SUMMARY OF THE INVENTION Accordingly, the present invention is to solve the problem of the conventional winding method or apparatus, that is, to provide a winding method and apparatus for maintaining a stable rotation of a bobbin from the beginning of winding. The task is to do so.

[0012]

In order to solve this problem, a yarn winding method of the present invention mainly has the following configuration. That is, in a yarn winding method using a swing arm type winder, a swing arm is provided by an electromagnet 10, a permanent magnet 13, and a balance weight cam (not shown, the same applies hereinafter) until a traverse starts immediately after the yarn is hooked. 7, a surface pressure higher than the normal winding surface pressure is generated. Until the winding speed is stabilized and in a stable state, the swing arm 7 is applied to the swing arm 7 by the permanent magnet 13 and the balance weight cam. After a slightly higher surface pressure is generated and the winding diameter becomes thicker and the stable state is released, a normal winding surface pressure is generated by the swing arm 7 using only the balance weight cam. It is a winding method.

In other words, until the traverse starts immediately after the yarn hooking, the electromagnet 10, the permanent magnet 13, and the balance weight cam generate the highest surface pressure of, for example, about 8 kg on the swing arm 7 by the three elements. Until the winding speed is stable and in a stable state,
After the permanent magnet 13 and the balance weight cam generate a surface pressure slightly higher than the normal winding surface pressure of, for example, about 3 kg on the swing arm 7 on the swing arm 7, and after the winding diameter becomes thick, the stable state is released. In this method, a normal winding surface pressure of, for example, about 1.5 kg is generated by the swing arm 7 using only the balance weight cam.

Further, the swing arm type winding device of the present invention has the following configuration. That is, the permanent magnet 13 is fixedly mounted on a shaft 15 slidably attached thereto, a spring 16 is connected to the shaft 15, and when the permanent magnet 13 slides a predetermined distance, the stopper 21 locks the permanent magnet 13. , The winding diameter increases and the swing arm 7
A swing arm type winding device characterized in that a swing arm 7 is released from the permanent magnet 13 when the arm is separated from the permanent magnet 13.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A yarn winding method and a swing arm type winding apparatus according to the present invention will be described below with reference to FIGS.

FIG. 1 is an overall side view of an example of a swing arm type winder according to the present invention in which a permanent magnet and an electromagnet are combined.

FIG. 2 is a sectional view showing the construction of a permanent magnet 13 and a spring 16 for showing details of an example of such a swing arm type winder.

When the bobbin 8 comes into contact with the drive roll 11, the electromagnet 10 has a gap of about 1 mm from the swing arm 7, and when the foot switch 9 is depressed, the electromagnet 1
0 works to pull the swing arm 7 strongly, and the bobbin 8 comes into contact with the drive roll 11 strongly.

On the other hand, the permanent magnet 13 is slidably mounted on a shaft 15 and a bearing 17 mounted on the permanent magnet 13, and a compression coil spring 16 is inserted into the shaft 15 outside the bearing 17 and is fixed by a spring fixing nut 18. Installed.

The permanent magnet 13 is attracted to the swing arm 7 and the bobbin 8 is pressed against the drive roll 11 by the force of the spring 16 and the force applied with the normal surface pressure.

When the yarn is hung and wound on the bobbin 8 to increase the winding diameter, the swing arm 7 is naturally driven by the drive roll 11.
, The permanent magnet 13 moves together with the swing arm 7, and the shaft 15 slides on the bearing 17 and the spring 1
6, the bobbin 8 is pressed against the drive roll 11 by a force obtained by applying a spring force and a normal surface pressure, and the yarn 1 is wound. When the winding thickness further increases, the gap A between the stopper 21 attached to the bearing 17 and the spring fixing nut disappears, and the fixing nut 18 is pressed by the stopper 21,
The permanent magnet 13 does not slide forward any more, and finally the bobbin 8 is pressed against the drive roll 11 by the attraction force of the magnet 13, detaches from the swing arm 7 and returns to the original initial state by the spring force, and then normally The yarn is wound only by surface pressure.

[0022]

The permanent magnet 13 is supported by the case 25 by the pins 23 of the bearing 17 as shown in FIG. 4, and functions to freely increase the stability of the attracting force of the familiar magnet 13 in accordance with the inclination of the swing arm 7.

The pin 24 shown in FIG. 2 is attached to regulate an unnecessary inclination of the magnet 13.

The fixing nut 18 is provided for fine adjustment of the spring force.
Is securely stopped.

[0025]

According to the conventional swing arm type winding method, vibration occurs until a stable area is reached at the beginning of winding, and thread breakage occurs due to insufficient rotation of the bobbin.
According to the present invention, the rotational force of the bobbin can be reliably applied from the start of winding to the stable region to eliminate noise and thread breakage due to vibration. Also, in the conventional method, it took about 1 minute, for example, for the winding speed to become stable. However, according to the present invention, it takes only about 10 seconds, and it is possible to achieve a significant improvement in working efficiency. Become.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a winding device of the present invention.

FIG. 2 is a detailed sectional view showing an example of the winding device of the present invention.

FIG. 3 is a side view showing an example of the winding device of the present invention.

FIG. 4 is a plan view showing an example of the winding device of the present invention.

FIG. 5 is an overall view showing an example of a take-up device including the take-up device of the present invention.

FIG. 6 is a side view of a conventional winding device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 thread 2 oiling roll 3, 4 roll 5 separate roll 6 traverse device 7 swing arm 8 bobbin 9 foot switch 10 electromagnet 11 drive roll 12 magnet device main body 13 magnet 14 mover 15 shaft 16 compression coil spring 17 bearing 18 spring fixing nut 19 Screw 20 Set screw 21 Stopper 22 Bracket 23 Pin 24 Pin 25 Case

Claims (2)

[Claims] In a method of winding a yarn using a swing arm type winder, a normal winding surface pressure is applied to a swing arm by an electromagnet, a permanent magnet and a balance weight cam until a traverse is started immediately after yarn winding. Until the winding speed is stable and in a stable state, a slightly higher surface pressure than the normal winding surface pressure is generated on the swing arm by the permanent magnet and the balance weight cam. A winding method for a yarn, wherein a normal winding surface pressure is generated by a swing arm using only a balance weight cam after the diameter has been removed from a stable state. 2. A permanent magnet is fixedly mounted on a slidably mounted shaft, a spring is connected to the shaft, and when the permanent magnet slides a predetermined distance, the permanent magnet is locked by a stopper, and the winding diameter is reduced. A swing arm type winding device comprising a mechanism for releasing the swing arm from the permanent magnet when the swing arm becomes thick and separates from the permanent magnet.