JPH0688737B2 - High-speed yarn winding method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a high-speed yarn winding method, and more particularly, to a yarn winding method in which one driven touch roller and two independently driven spindles are provided. The present invention relates to a method of shifting from a stop of a yarn winding device to a high-speed yarn winding in which the winding is continuously performed by switching a spindle.

[Prior art]

When shifting from stop to yarn winding using a conventional yarn winding device, the surface of the touch roller of the device is brought into contact with the surface of the yarn winding bobbin fitted to the independently driven spindle, and the surface of the yarn winding bobbin is contacted. At the same time, the surface speed of the touch roller was gradually increased to a high speed, and the yarn was hooked at the time when the speed of the wound yarn reached.

[Problems to be solved by the present invention]

However, when the speed of the yarn to be wound is 3000 m / min or more, the bobbin may be damaged due to the vibration of the spindle in which the touch roller and the bobbin are fitted.
In the case of a cylindrical wound bobbin made of compressed paper, the surface layer may peel off or may explode from the middle layer.As the speed increases, the frequency of exchanging the wound bobbin increases and the broken pieces of the wound bobbin scatter to improve safety. There is a problem.

This tendency is more often seen in the second or more reusable bobbin bobbin as compared to the new bobbin bobbin. The yarn wound bobbin often bursts before threading, but sometimes the thread wound bobbin cracks before threading, and after starting to wind a yarn on the thread wound bobbin, it starts to explode from the vicinity of the end and then winds. It may also cause the yarn to lose its shape. Therefore, instead of the conventional bobbin bobbin, it is possible to adopt a bobbin bobbin made of pressed paper that has been processed with less damage and bursting, but its durability is up to 6,000 m / min at the winding speed, and more than that. It was difficult to apply it to the take speed.

Furthermore, although a thread-wound bobbin made of a special plastic containing a fiber reinforcement was prototyped, the production cost was enormous and it was practically difficult to put it into operation in view of the recovery rate of the thread-wound bobbin.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the risk of damage to a bobbin bobbin, an increase in the bobbin bobbin replacement work, and explosion and scattering of the bobbin bobbin in the conventional yarn winding method.

Another object of the present invention is to provide a yarn winding method capable of safely operating even at a high yarn winding speed of 6,000 m / min or more.

[Means and Actions for Solving Problems]

According to the structure of the present invention, a turret type yarn winding device that has one driven touch roller and two independently driven spindles and alternately switches the two spindles to wind a yarn is used. In the method for winding a thread, the gap between the surface of the touch roller at the winding position of the touch roller and the spindle and the surface of the thread bobbin in a state where the thread is fitted on the spindle and the thread is not wound is 0.2. ~ 5.0
mm, a cylinder having a diameter larger than that of the bobbin and contacting the touch roller is inserted into one of the spindles when the apparatus is moved from the stop to the operation, and then the surface of the cylinder and the touch roller are inserted. The surface speed of the cylinder and the touch roller is increased in contact with the surface of the bobbin, and the other spindle is rotated while the bobbin is fitted to reach the speed at the start of winding and then the spindle is switched. And threading is performed with the surface of the bobbin and touch roller not in contact with each other.
A high-speed yarn winding method, characterized in that after the yarn is wound to 0.2 to 5.0 mm, the yarn winding is continued in a state where the surface of the yarn wound on the yarn winding bobbin and the surface of the touch roller are in contact with each other. Is.

The present invention will be described in detail below with reference to the drawings.

The drawings are all related to the method of the present invention and are an example of an apparatus to which the present invention is applied.

1 to 6 are all front views, FIG. 1 shows a state in which a bobbin bobbin is fitted to each of two spindles, and FIG. 2 shows one spindle having a larger diameter than the bobbin bobbin. FIG. 3 shows a state in which a cylinder is fitted, FIG. 3 shows a state immediately after starting threading, and FIG. 4 shows a thread wound around a thread winding bobbin after starting threading, and the surface of the thread comes into contact with the touch roller. The state is shown, and FIGS. 5 and 6 show the operating state.

Reference numerals A and B in the drawing denote spindles to which the bobbin bobbins a and b are fitted and which are driven independently by gripping the bobbin bobbin (driving device is not shown). Reference numeral 1 denotes spindles A and B at or near both ends. Support arms 2 for supporting are support shafts fixed to the support arm 1. The support shaft 2 rotates at a fixed position, and the rotation of the support shaft 2 causes the support arm 1 and the spindles A and B to rotate. A touch roller 3 is fixedly supported by a shaft 4 so as to be freely rotatable. Reference numeral 5 is a cam box, and 6 is a traverse guide that reciprocates by a drive mechanism in the cam box 5. A tension adjusting mechanism 7 adjusts the tension of the yarn Y.

The yarn winding bobbins a and b fitted to the independently driven spindles A and B are continuously wound by the support shaft 2 rotating 180 degrees intermittently at regular intervals.
This is a so-called turret type yarn winding device.

As shown in FIG. 1, the spindles A and B and the touch roller 3 have thread winding bobbins a and b fitted to the spindles A and B, respectively.
When one of the spindles A and B is moved to the yarn winding position, the surface a'of the bobbin bobbin a and the touch roller 3
Is formed so that the minimum gap S with the surface 3'of the above is 0.2 to 5.0 mm.

As shown in FIG. 2, one of the spindles A and B, for example, the spindle A, has the same inner diameter as that of the bobbin bobbin a and an outer diameter of the bobbin bobbin when the above device is shifted from the stop to the drive. A cylinder P, which is twice as large as the outer diameter S by a gap S, is fitted, and a spindle A with the surface P'of the cylinder P and the surface 3'of the touch roller 3 in contact with each other.
And the rotational speed of the spindle B on which the bobbin bobbin b is fitted are increased, and the speed of the surface P'of the cylinder P and the surface b'of the bobbin b and the speed of the surface 3'of the touch roller 3 are wound. After reaching the speed at the start of picking, move the support shaft 2 in the direction of arrow R or in the direction opposite to arrow R.
The spindle B is rotated 180 degrees to guide the spindle B in which the bobbin bob b is fitted to a predetermined position on the touch roller 3 side to perform spindle switching, and the surface b'of the bobbin bob b and the surface 3'of the touch roller 3 are not in contact with each other. Threading is performed in this state. After the yarn Y ′ having a thickness corresponding to the gap S is wound around the yarn winding bobbin b, the surface of the wound yarn Y ′ comes into contact with the surface 3 ′ of the touch roller 3 as shown in FIG. The rotation of the touch roller 3 is maintained.

After the cylinder P and the touch roller 3 are separated from each other, the yarn Y is wound around the yarn winding bobbin b fitted on the spindle B, and the surface of the yarn Y'wound and the surface 3'of the touch roller 3 are separated from each other. Until contact, it rotates due to inertia.

The gap between the bobbin b and the surface 3 of the touch roller 3 is
If it exceeds 5.0 mm, the surface of the yarn Y'and the touch roller 3
The time until contact with the surface of the yarn Y becomes longer, and the rotation of the touch roller 3 due to inertia gradually becomes slower, and the surface of the yarn Y ′ is rubbed against the surface of the yarn Y ′ due to the speed difference when the touch roller 3 comes into contact with the surface of the yarn Y ′. Disorders such as disconnection may occur.

That is, if the time from the separation of the cylinder P and the touch roller 3 to the contact between the surface of the yarn Y'and the surface 3'of the touch roller 3 is long, the speed of the surface 3'of the touch roller 3 falls below the specified range. So the surface of the touch roller 3'K
It is necessary to make contact with the surface of the yarn Y'while the speed is within the specified range, for which the gap S is 5.0 mm or less.

On the other hand, the gap S needs to be 0.2 mm or more. This is because the surface 3'of the touch roller 3 and the surface a ', b'of each bobbin a, b are not perfect circles, but there is vibration at the time of rotation due to unbalance of the accuracy error center of gravity, and even a part of the bobbin is wound at high speed. This is to prevent damage and cracks in the bobbin a, b caused by the contact between the bobbins a, b and the touch roller 3.

That is, especially the reusable bobbin is not a perfect circle,
This non-round circle allowable range is a range in which the yarn is not collapsed due to the imbalance of the center of gravity when the yarn is wound at high speed, and the yarn winding bobbins a and b are directly attached to the touch roller 3 before the yarn is wound.
This is because the surface Y'of the yarn Y and the surface of the touch roller 3 come into contact with each other after the yarn Y is wound around the yarn winding bobbins a and b so as to be overlapped with each other several times without contacting the surface 3'of the yarn. By setting S to 0.2 mm or more, high speed rotation is possible and smooth operation can be performed.

Therefore, the gap S is within the range of 0.2 to 5.0 mm.

The gap S may be formed by reducing the thickness of the bobbin bobbins a and b, and by regulating the stop position of the touch roller 3.

The yarn Y is wound in the state shown in FIG. 4, and the number of yarns Y ′ wound on the yarn winding bobbin b often increases with the passage of time, as shown in FIG. The touch roller 3 and the cam box 5 move to the tension adjusting mechanism 7 side according to the diameter of the yarn Y'wound over. The cylinder P, which has been fitted into the spindle A while the yarn Y is wound on the bobbin b, is replaced with another yarn bobbin a, and the yarn Y'wound on the bobbin b is just filled. To start to rotate to the specified number of revolutions, and then the arrow R '
180 or 180 in the opposite direction of arrow R '.
The thread is automatically rotated by rotating the thread once to reach the state shown in FIG. The thread winding bobbin a is replaced with another thread winding bobbin of the thread winding bobbin b which is full while the thread Y is wound around the bobbin bobbin a.
Then, the states shown in FIGS. 5 and 6 are sequentially repeated, and the yarn Y is continuously wound.

The cylinder P is made of a material that will not be damaged even if it comes into contact with the surface 3'of the touch roller 3 at high speed rotation, and preferably a material that does not generate noise during contact rotation with the touch roller 3, for example, The outer circumference of an aluminum cylinder is coated with neoprene rubber to a thickness of 2 mm.

By preparing one or several cylinders P, it is possible to use them when shifting from the stop to the start of each winding device.

〔Example〕

Comparative Example In the case of direct spinning stretch winding of polyester fiber, a thread winding bobbin made of pressed paper was fitted on the spindle and rotated at a speed of 3500 m / min to try a yarn hooking test, but before reaching 3500 m / min. In many cases, the bobbin was damaged, and fragments were scattered due to the damage, making it difficult to shift to operation.

In addition, some of the yarns that could be threaded had to be interrupted because the yarn winding bobbin partly damaged during the process and the wound yarn collapsed.

Example 1 When the polyester fiber was directly spun and drawn and wound, the outer diameter was 1 mm smaller and the wall thickness was 0.5 mm smaller than that of the bobbin used in Comparative Example 1. 3500 m / min which is exactly the same shape as the bobbin used in the comparative example and which is made of aluminum and whose outer circumference is covered with a neoprene rubber having a thickness of 2 mm is used to shift the winding device from stop to operation. Operated in. All the threading operations were smooth, there was no bobbin wound, and the safety was good, and the transfer to the operation was easy. Also, the winding speed was increased to 5000 m / min and 6000 m / min, but the same effect was obtained. As another effect, the wall thickness of the bobbin is reduced, the unit price of the bobbin is reduced, the bobbin is not damaged, the manufacturing cost of the cylinder is immediately compensated, and the operating cost is significantly reduced. did it.

Example 2 As a result of carrying out direct spinning draw winding of a nylon yarn under the same conditions as in Example 1, the same effect as in Example 1 was recognized.

〔The invention's effect〕

According to the present invention, particularly when the yarn is wound by rotating the yarn winding bobbin at a high speed in the direct spinning stretch winding of the synthetic fiber,
The touch roller and the bobbin are rotated at a speed, and the surface of the touch roller and the surface of the bobbin are separated due to vibration at the time of rotation due to the imbalance of the center of gravity, and the bobbin is not damaged or cracked without repeated impact. It is possible to operate safely and smoothly without scattering of the damaged part.

In addition, since the bobbin and the touch roller do not come into direct contact with each other and there is no impact, it is possible to reduce the thickness of the bobbin, which can reduce the materials used for the bobbin and reduce the manufacturing cost. We were able to reduce consumption significantly.

[Brief description of drawings]

The drawings are all related to the method of the present invention and are an example of an apparatus to which the present invention is applied. 1 to 6 are all front views, FIG. 1 shows a state in which a bobbin bobbin is fitted to each of two spindles, and FIG. 2 shows one spindle having a larger diameter than the bobbin bobbin. FIG. 3 shows a state in which a cylinder is fitted, FIG. 3 shows a state immediately after starting threading, and FIG. 4 shows a thread wound around a bobbin after starting threading, and the surface of the thread comes into contact with the touch roller. The state is shown, and FIGS. 5 and 6 show the operating state. 1 ... Support arm 2 ... Support shaft 3 ... Touch roller 3 '... Front surface 4 ... Shaft 5 ... Cam box 6 ... Traverse guide 7 ... Tension adjustment mechanism A, B ... Spindle a, b .. Bobbin Y, Y '... Thread A', B ', a', b '... Surface

Claims (1)

[Claims] 1. A yarn using a turret type yarn winding device which has one driven touch roller and two independently driven spindles and which alternately winds the yarn by alternately switching the two spindles. In the method of winding a thread, the gap between the surface of the touch roller at the winding position of the touch roller and the surface of the thread winding bobbin fitted to the spindle and not wound with the thread at the winding position. Is formed to 0.2 to 5.0 mm, and when the apparatus is moved from the stop to the operation, one spindle is fitted in advance with a cylinder having a diameter larger than that of the bobbin and contacting the touch roller. Start the winding by increasing the surface speed of the cylinder and touch roller while the surface is in contact with the surface of the touch roller, and rotating the other spindle while the bobbin is fitted. Switches the spindle after reach a speed of, performs yarn over the surface of the surface and the touch roller of the yarn bobbin in a non-contact state, the gap 0.2
A high-speed yarn winding method, characterized in that after the yarn is wound to about 5.0 mm, the yarn winding is continued in a state where the surface of the yarn wound on the yarn winding bobbin and the surface of the touch roller are in contact with each other.