JP2003226466A - Yarn winding machine and yarn winding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that a gap between a yarn sending roller and an outer circumference of a package is not considered at all and a wound shape of the package gets poor in a conventional yarn winding machine with a yarn sending roller in which a contact roller can displace relatively to a roller support member. <P>SOLUTION: This yarn winding machine is provided with the contact roller 18 rotating with keeping contact with an outer circumference surface of a package 3, a yarn sending roller 26 provided in an upstream of the contact roller 18 with keeping a clearance (c) from the outer circumference of the packaging 3 and rotating with keeping contact with yarn Y at an outer circumference thereof to deliver the yarn Y to the outer circumference of the package 3, a roller support member 1 supporting the contact roller 18 and the yarn sending roller 26, and a roller support member position adjusting means adjusting position of the roller support member 1 in a direction in which the clearance (c) changes, and has the contact roller 18 relatively displacably supported by the roller support member 1, and is provided with a controlling means 30 controlling a roller support member position adjusting means to keep the clearance (c) fixed regardless of a packaging diameter. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a yarn winding machine for winding a yarn on a bobbin and providing it as a so-called package.

[0002]

2. Description of the Related Art Conventionally, a traverse device and a contact roller are provided, the contact roller is pressed against the bobbin, and the yarn is continuously fed to the bobbin while being traversed by the traverse device. At the same time, the bobbin is rotated to rotate the yarn. In a yarn winding machine adapted to wind up a yarn, a so-called yarn feeding roller is provided in which a yarn feeding roller is provided between the traverse device and the contact roller to adjust the winding tension of the yarn wound in the package. The yarn winding machine is known. As an improved version of such a yarn winding machine, for example, Japanese Patent Laid-Open No. 52-
No. 37846 is known. In this improved yarn winding machine, the contact roller is relatively displaceable with respect to the roller supporting member supporting the contact roller, and the load of the roller supporting member and the resistance when the roller supporting member is moved are determined by the contact port roller. It is devised so that it is not added to the outer peripheral surface of the package via.
Therefore, there is an advantage that the yarn can be wound with a low contact pressure without fluctuation of the contact pressure by the contact roller.

[0003]

However, in the yarn winding machine, no consideration is given to the gap between the yarn feeding roller and the outer periphery of the package, that is, the free length of the yarn between them. There is a problem in setting the gap, and the winding shape of the package becomes poor. Therefore, it is an object of the present invention to provide a yarn winding machine that does not change contact pressure, can be wound at low contact pressure, and can obtain a package with a good winding appearance.

[0004]

The problem to be solved by the present invention is as described above, and the means for solving this problem will be described below.

That is, according to the first aspect of the present invention, between the contact roller that rotates by contacting with the outer peripheral surface of the package formed by winding the bobbin on the bobbin and the outer periphery of the package on the upstream side of the contact roller. A yarn feeding roller which is provided so as to have a predetermined gap and rotates while contacting the peripheral surface of the yarn to be wound on the bobbin, and delivers the yarn to the outer periphery of the package, and supporting the contact roller and the yarn feeding roller. And a roller support member position adjusting means for adjusting the position of the roller support member in the direction in which the predetermined gap changes, and the contact roller is supported by the roller support member so as to be relatively displaceable. In the yarn winding machine, so that the gap is constant regardless of the package diameter,
A control means for controlling the roller support member position adjusting means is provided.

According to a second aspect of the present invention, there is provided a package diameter detecting means, and a storage means for storing in advance the relationship between the package diameter and the position of the roller supporting member that keeps the gap constant regardless of the package diameter. The means controls the roller supporting member position adjusting means based on the package diameter detected by the package diameter detecting means and the relationship between the package diameter stored in the storage means and the position of the roller supporting member. The yarn winding machine described in 1 was used.

According to a third aspect of the present invention, a predetermined distance is provided between a contact roller that rotates by contacting with the outer peripheral surface of the package formed by winding the yarn around the bobbin and the outer periphery of the package on the upstream side of the contact roller. And a roller for supporting the contact roller and the yarn feed roller, which is provided so as to have a gap, and which rotates the yarn to be wound on the bobbin while contacting the peripheral surface thereof and delivers the yarn to the outer periphery of the package. A supporting member and a roller supporting member position adjusting means for adjusting the position of the roller supporting member in a direction in which the predetermined gap changes, wherein the contact roller is supported by the roller supporting member so as to be relatively displaceable. In a yarn winding machine, package diameter detecting means for detecting a package diameter, roller position detecting means for detecting a relative position of the contact roller with respect to a roller supporting member, and A gap is constant regardless of the package diameter, a storage unit is provided that stores in advance the relationship between the package diameter and the relative position of the contact roller with respect to the roller supporting member, and the package diameter detected by the package diameter detecting unit, Based on the relationship between the package diameter stored in the storage means and the relative position of the contact roller with respect to the roller support member, the roller support member position adjusting means is controlled so that the gap is constant regardless of the package diameter. A control means for controlling is provided.

In the present invention, the gap is 0.5 to
The yarn winding machine according to any one of claims 1 to 3, which is within a range of 3 mm.

According to a fifth aspect of the present invention, a contact roller, which is formed by winding a thread around a bobbin and rotates in contact with the outer peripheral surface of the package, and a predetermined distance between the contact roller and the outer periphery of the package are provided upstream of the contact roller. And a roller for supporting the contact roller and the yarn feed roller, which is provided so as to have a gap, and which rotates the yarn to be wound on the bobbin while contacting the peripheral surface thereof and delivers the yarn to the outer periphery of the package. A supporting member and a roller supporting member position adjusting means for adjusting the position of the roller supporting member in a direction in which the predetermined gap changes, wherein the contact roller is supported by the roller supporting member so as to be relatively displaceable. In the yarn winding machine, a control means for controlling the roller supporting member position adjusting means is provided so that the gap is within a range of 0.5 mm to 3 mm.

According to a sixth aspect of the present invention, the control means is arranged so that the gap between the yarn feeding roller and the outer periphery of the package changes more than a predetermined range during a part of the package winding process. Is a yarn winding machine according to any one of claims 1 to 5, which controls the roller supporting member position adjusting means.

In claim 7, the part of the process is
The yarn winding machine according to claim 6, which is less than 20% of the time during the winding process from the start of winding one package to the full winding.

According to another aspect of the present invention, the yarn is provided on the upstream side of the contact roller which rotates in contact with the outer peripheral surface of the package formed by winding the bobbin on the bobbin, and the yarn is wound on the peripheral surface. A yarn feeding roller that rotates while being in contact with each other and delivers it to the outer periphery of the package is arranged so as to have a predetermined gap between the outer periphery of the package and the yarn feed roller while controlling the gap to be constant regardless of the package diameter. The yarn winding method is used for winding the package.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. FIG. 1 is an overall front view of an elastic yarn winding machine for winding elastic rubber such as urethane rubber, and FIG.
Is an enlarged front view of an essential part showing the configuration of the slide box, FIG. 3 is a control system diagram of the yarn winding machine, FIG. 4 is a diagram showing a relationship between a package diameter, a gap and a contact roller position, and FIG. The amount of gap formed between the roller and the package,
FIG. 6 is a diagram showing the relationship between the length of the yarn delivered from the yarn feed roller and the length until the yarn is wound into the package. In FIG. 6, basic operation is performed with a small gap, and a large gap is controlled to appear intermittently. FIG. 7 is a diagram showing the relationship between the package diameter and the clearance, and FIG. 7 is a diagram showing the relationship between the package diameter and the clearance and the contact roller position when the position of the contact roller is controlled to be constant with respect to the slide box. Figure 8
FIG. 6B is a front view of the slide box portion showing the relationship between the package diameter and the gap.

The yarn winding machine M shown in FIG.
The machine body frame 7 is provided with a slide box 1 as a roller support member that can be raised and lowered. The machine body frame 7 is further provided with a rotatable turret plate 2, and the turret plate 2 is configured to be rotatable about a rotation shaft 6 by a rotation drive device (not shown). A fixed frame 8 is provided on the front surface of the machine body frame 7, and the fixed frame 8 is provided with an operation panel 9.

The turret plate 2 has two bobbin holders 1
Projections 1 and 12 are provided, each of which is rotatable. The two bobbin holders 11 and 12 are in phase with each other.
The bobbin holders 11 arranged at positions different by 80 °
Is located at the upper winding position, and the other bobbin holder 12 is located at the lower standby position. The positions of the two bobbin holders 11 and 12 can be exchanged by rotating the turret plate 2 by the rotation driving device. Bobbin B for each bobbin holder 11 and 12
Is installed.

As shown in FIGS. 1 and 2, the slide box 1 is provided with a traverse device 4, and a traverse guide 5 provided in the traverse device 4 is continuously supplied from a spinning machine (not shown). By engaging with the yarn Y and traveling in the traverse range, the traverse motion of the yarn Y fed downward is performed.

On the other hand, the slide box 1 further includes a contact roller 18. Specifically, the contact roller 1
An arm 13 in which 8 is swingably provided on the slide box 1.
The slide box 1 is rotatably supported so that it can be displaced relative to the slide box 1. When the arm 13 swings up and down, the contact roller 18 moves relative to the slide box 1 in a direction approaching the bobbin B at the winding position (downward) and a direction away from the bobbin B (upward). The relative position can be changed.

An arm 13 for supporting the contact roller 18
And the slide box 1 are provided with an air cylinder 14 as a contact pressure adjusting means. The air cylinder 14 is configured to partially support the weight of the contact roller 18, whereby the contact roller 18 is
Contacts the outer peripheral surface of the package 3 with a small contact pressure. Since the contact pressure is too large to use the contact roller 18's own weight as the contact pressure to the package 3 as it is, the air cylinder 14 supports a part of its own weight to reduce the contact pressure. We are making adjustments. However, when it is desired to set the contact pressure to a certain degree, the air cylinder 14 may be removed, or the air cylinder 14 may be configured to press the contact roller 18 in the opposite direction to the bobbin B side. The contact roller 18 that is in contact with the outer peripheral surface of the package 3 in this manner is rotated by the rotation of the package 3.

The traverse device 4 is arranged far away from the contact roller 18 on the upstream side (upstream side of the yarn path). A yarn feeding roller 26 is provided on the upstream side of the contact roller 18, and the yarn feeding roller 26 is attached to the slide box 1 so as not to be relatively displaced. Thread feed roller 26
Is located immediately downstream of the traverse guide 5 of the traverse device 4 and above the outer peripheral surface of the package 3. However, the yarn feeding roller 26 does not contact the outer peripheral surface of the package 3 and is positioned with a small gap c shown in FIG. Therefore, the yarn feeding roller 26 is
3 is not driven to rotate in response to the above rotation, but is directly rotated by directly receiving the power from the drive motor (thread feed roller driving means) 27 shown in FIG. Thread feed roller 2
6 transfers the yarn traversed by the traverse device 4 to the peripheral surface of the yarn, sends it to the downstream side, and transfers it to the package 3. On the other hand, the contact roller 18 is only in contact with the outer peripheral surface of the package 3, and neither takes over the yarn on the outer peripheral surface nor delivers the yarn to the package 3.

The slide box 1 is also provided with a contact roller position detection sensor 15. The contact roller position detection sensor 15 detects the displacement (angle of the arm 13 with respect to the horizontal line) θ of the arm 13 that supports the contact roller 18 contacting the outer circumference of the package 3 with respect to the slide box 1, that is, the thread. The relative position of the contact roller 18 with respect to the feed roller 26 can be detected. Further, the arm 13 has a rotation sensor 1
6 is provided and configured to detect the rotation speed of the contact roller 18. The outer peripheral speed of the package 3 can be known by investigating the rotational speed of the contact roller 18 rotating in contact with the outer peripheral of the package 3. The contact roller position detection sensor 15 and the rotation sensor 16 as a rotation speed detection unit are electrically connected to a controller 30 described later.

As shown in FIG. 2, the slide box 1 is guided by rails 17, 17 arranged in the vertical direction, and is vertically movable along the rails 17, 17. Most of the weight of the slide box 1 is supported by an air cylinder (not shown), but the up and down movement is performed by a ball screw mechanism described later. The weight of the slide box 1 itself is
It is completely supported by the air cylinder and the ball screw mechanism, and except for the contact roller 18, its own weight is not used as a contact pressure against the package 3. However, the air cylinder may be omitted, and the weight of the slide box 1 may be supported only by the ball screw mechanism (support member driving means).

On the side of the slide box 1, a screw rod 1 is provided.
9 are vertically arranged and rotatably supported by the machine body frame 7. The lower end of the screw rod 19 is connected to a lifting drive motor 20, and the lifting rod drive motor 20 drives the screw rod 19 to rotate. A ball nut 21 is provided on a side portion of the slide box 1 and is connected to the screw rod 19, and the slide box 1 is vertically moved by rotationally driving the screw rod 19 by the elevating and lowering drive motor 20. . The lifting drive motor 20 is electrically connected to a controller 30 described later,
Its drive is controlled. The screw rod 19, the ball nut 21, and the lifting drive motor 20 described above constitute a ball screw mechanism that is a roller supporting member position adjusting means.

Further, as shown in FIG. 3, the yarn winding machine M is provided with a controller 30 and is provided with a motor 22 for driving a traverse cam of the traverse device 4,
It is electrically connected to the controller 30. Furthermore,
The motors (bobbin driving means) 23 and 24 for driving the two bobbin holders 11 and 12, respectively, are the controller 3
Further, a rotation sensor 25 is provided for the bobbin holder 11 which is electrically connected to 0 and which is in the winding position so that information on the rotation speed thereof can be sent to the controller 30. The rotation sensor 25 is used for feedback control of the rotation speed of the bobbin holder driving motor 23 as described later, and is also used as a winding diameter detecting means for detecting the winding diameter of the package. A yarn feed roller drive motor 27 that rotationally drives the yarn feed roller 26 is also electrically connected to the controller 30. As the traverse device 4, a known device such as a known rotary type traverse device using rotary blades may be applied in addition to the cam type traverse device shown in this embodiment.

Next, the slide box 1 according to the winding thickness of the package 3 (increasing the package diameter) in the winding process.
The rising control will be described. First, the package winding diameter and the contact roller position (relative position of the contact roller 18 with respect to the yarn feeding roller 26) θ where the gap between the outer periphery of the package 3 and the outer periphery of the yarn feeding roller 26 becomes constant regardless of the package winding diameter. Relational expression with (relational table shown in FIG. 4)
Is geometrically obtained in advance, and this relational expression (relationship table) is stored in the storage means 30a provided in the controller 30. Next, during winding, the winding diameter of the package 3 is calculated from the detection value of the rotation sensor 16, the radius of the contact roller 18, and the detection value of the rotation sensor 25. Further, based on the winding diameter calculated, the contact roller position corresponding to the winding diameter is derived from the relational expression (relationship table) stored in the storage means 30a. Then, the elevation drive motor 20 is controlled so that the detection value of the contact roller position detection sensor 15 becomes the derived contact roller position, and the height position of the slide box 1 (thread feed roller 26) is adjusted. Accordingly, the gap between the outer circumference of the package 3 and the outer circumference of the yarn feeding roller 26 can be made constant regardless of the package winding diameter.

Thus, regardless of the package diameter,
By controlling so that the relative position of the contact roller 18 to the slide box 1 (yarn feed roller 26) is always constant, the outer peripheral surface of the package 3 and the yarn feed roller 26 are controlled.
The distance c between the yarn feeding roller 26 and the outer circumference of the package 3 is set to be as close as possible to the minimum required gap co, and the distance (free length) at which the yarn Y is free is always minimized. You can This makes it possible to form a good package shape. The gap co is a gap that must be provided at least in order to prevent the yarn feeding roller 26 and the package 3 from coming into contact with each other due to a blurring of the yarn feeding roller 26 and the package 3 during winding.
Further, the control for keeping the gap amount c constant is performed by using a mathematical formula or a table stored in the controller 30 in advance.
Since it is performed based on the data indicating the relationship between the package diameter and the relative position of the contact roller 18, the gap amount c can be reliably and accurately kept constant by simple control.

On the other hand, for example, the contact roller 18 which is relatively raised with respect to the slide box 1 by the diameter increased by the winding of the package 3 is moved up to the original position by raising the slide box 1. When the return control is performed, that is, when the relative position of the contact roller 18 to the slide box 1 is controlled to be constant, as shown in FIGS. 7 and 8, the yarn feed roller 26 and the outer circumference of the package 3 are separated from each other. The gap between them will change according to the package diameter. For example, when the package diameter is r1, the gap between the yarn feeding roller 26 and the outer periphery of the package 3 is c
When the package diameter is p and r2 is larger than r1, the gap c between the yarn feeding roller 26 and the outer circumference of the package 3 decreases to cq. In this way, the contact roller 1
In the control in which the position 8 is fixed with respect to the slide box 1, the gap c between the yarn feeding roller 26 and the outer circumference of the package 3 changes depending on the package diameter.
Necessary for improving the winding shape of the package 3,
It becomes difficult to “configure the gap c between the yarn feeding roller 26 and the outer periphery of the package 3 to be constant and minimum regardless of the package diameter”.

Further, in the case of this example, the gap amount c provided between the outer peripheral surface of the package 3 and the yarn feeding roller 26 is
Within a range of 0.5 mm to 3 mm, preferably 0.5 mm
It is controlled so as to be within the range of 1 mm. this is,
For example, if the gap amount c is smaller than 0.5 mm, at least the gap co that is required to prevent the yarn feed roller 26 and the package 3 from coming into contact with each other due to a shake during winding of the yarn feed roller 26 or the package 3. This is because the yarn feeding roller 26 and the package 3 may come into contact with each other without being able to secure the above.

When the gap amount c is larger than 3 mm,
The yarn Y traversed by the traverse device 4 is fed by the yarn feed roller 2
This is because the free length (free length) L (shown in FIG. 2) between the point 6 and the contact with the outer peripheral surface of the package 3 becomes too large, and the winding shape of the package 3 deteriorates. Therefore, by controlling the gap amount c within the range of 0.5 mm to 3 mm as in the case of the present invention, the yarn Y can be wound stably without contact between the yarn feeding roller 26 and the package 3. In addition, the free length between the yarn feeding roller 26 and the contact with the outer peripheral surface of the package 3 does not increase, and the package 3 having a good shape can be formed. It is desirable to control the gap amount c to a constant value within the range of 0.5 mm to 3 mm, preferably 0.5 mm to 1 mm, but the gap amount c may be slightly changed within the above range.

In the yarn winding machine M provided with the yarn feeding roller 26 that is positively driven upstream of the contact roller 18, unlike the case where only the contact roller 18 is provided, the peripheral speed of the package 3 is The peripheral speed of the yarn feeding roller 26 that delivers the yarn Y to the package 3 can be made different, and the tension of the yarn Y between the yarn feeding roller 26 and the package 3 can be adjusted.

In the present embodiment, the rotation speed of the contact roller 18 is detected by the rotation sensor 16, and the motor 23 for driving the bobbin holder 11 is controlled so that the rotation speed detected by the rotation sensor 16 becomes constant. Drive control is performed. Specifically, if the detection value of the rotation sensor 16 falls below a predetermined value according to the winding speed, the rotation speed of the motor 23 is controlled to increase, and conversely, the detection value of the rotation sensor 16 is the above-mentioned value. If it exceeds the predetermined value, the rotation speed of the motor 23 is controlled to decrease. Further, a bobbin holder rotation sensor 25 for detecting the rotation speed of the bobbin holder 11 is provided on the machine body frame 7, and the motor 2
3 is used for feedback control of the rotation speed.

Further, in the present embodiment, the outer peripheral velocity of the package 3 is calculated from the detection value of the rotation sensor 16 and the radius of the contact roller 18 for the winding thickness of the package 3 (increase in the package diameter), and this is described above. The package diameter is calculated from the detection value of the bobbin holder rotation sensor 25 and detected, and the up-and-down control of the slide box 1 is performed based on the change in the package diameter. In this embodiment, the method of indirectly detecting the package diameter is adopted,
It is also possible to directly detect the package diameter by a non-contact type sensor provided separately.

Further, in the above embodiment, the contact roller 18
Although the control of the gap amount c is indirectly performed by the position control of 1), the gap amount c can be controlled to be constant by the following method. That is, a height position detection sensor (for example, a height position gauge or the like) for detecting the height position of the slide box 1 is provided, and the package winding diameter and the slide box height position where the gap amount c is constant are provided. The relationship between the above is geometrically obtained in advance, and the slide box height position detection sensor detects the slide box height position derived from the detection value of the roll diameter detection sensor and the above relationship. Adjust the height position of 1. Further, as still another method, the following may be performed. A sensor that directly detects the gap amount c (for example, a distance sensor that is attached to the slide box 1 and measures the distance to the outer circumference of the package) is provided, and the position of the slide box 1 is adjusted so that the gap amount c becomes constant.

As described above, in the yarn winding machine of the present invention, the gap amount c is controlled to be maintained at a constant value during the winding process of the yarn Y. It is also possible to provide a so-called creeping function, which performs control to arbitrarily change in a part of the taking process. That is, the controller 30 is configured to drive the elevating drive motor 20 at a predetermined timing in the winding process to elevate the slide box 1 to change the gap amount c.

As can be seen by comparing the upper and lower diagrams of FIG. 5, increasing the gap amount c means that the yarn Y to be fed is separated from the peripheral surface of the yarn feeding roller 26 and the outer circumference of the package 3 is increased. It means that the free length L until reaching (winding up) increases. This increase in free length L is
Means that the difference between the axial position traversed by the traverse device 4 and the axial position at which the yarn is actually wound around the package 3 (traverse delay) increases.
Due to this traverse delay, even if the traverse guide 5 of the traverse device 4 reaches its stroke end position, the yarn Y
Is actually wound around the package 3 at a position closer to the center in the axial direction by the traverse delay. After all, the increase in the traverse delay means that the winding width in the axial direction when the yarn Y is wound around the package 3 is narrowed. In this way, by changing the gap amount c,
The winding width in the axial direction when the yarn Y is wound on the package 3 can be changed. The control of the present invention utilizes this principle.

This change control of the gap amount c is performed by, for example, FIG.
As shown in, the basic operation can be performed in the small gap c1 and the large gaps c2, c3 can be intermittently appeared. By such control, it is possible to eliminate the state in which both ends of the package in the axial direction become high (ear height), and to make the final package shape good. However, in this case, the small gap c1 is set to 0.5 mm to
0.5mm in the whole winding process
The ratio of the process of maintaining the small gap within the range of 3 mm is 80% or more (the ratio of the process out of the range is 20% or more).
%), Preferably 80% to 95%
Try to fit within the range. This is 0.5-3 mm
When the ratio of maintaining the gap in the range of is less than 80%, the ratio of the process in which the gap amount is out of the range of 0.5 to 3 mm increases, and conversely, the package 3 has the winding shape. This is because it may have an adverse effect.

The present invention is intended to be used at a low contact pressure, and of course, in this case, a great effect is exhibited, but when it is used at a high contact pressure, it is used. I don't mind. Even if the contact pressure is high, the present invention can eliminate the contact pressure fluctuation when the guide resistance of the roller support member guide means is large, or when the guide resistance largely changes during the movement of the roller support member. Can be effective.

[0037]

Since the present invention is constructed as described above,
The following effects are achieved.

That is, as described in claim 1, a contact roller that rotates by contacting with an outer peripheral surface of a package formed by winding a thread on a bobbin, and an outer periphery of the package on the upstream side of the contact roller. A yarn feeding roller that is provided so as to have a predetermined gap between the yarn feeding roller and the yarn feeding roller that rotates while contacting the peripheral surface of the yarn to be wound on the bobbin and delivers the yarn to the outer periphery of the package, and the contact roller and the yarn feeding roller. A roller supporting member for supporting and a roller supporting member position adjusting means for adjusting the position of the roller supporting member in a direction in which the predetermined gap changes are provided, and the contact roller is supported by the roller supporting member so as to be relatively displaceable. In the yarn winding machine, the control means for controlling the roller support member position adjusting means is provided so that the gap becomes constant regardless of the package diameter. While reducing the dynamic, it is possible to obtain a good shape of the package. Further, the contact pressure of the contact roller with the package can be lowered. In addition, the gap between the outer peripheral surface of the package and the yarn feeding roller is as close as possible to the minimum required gap, and the distance at which the yarn is free between the yarn feeding roller and the outer periphery of the package is always minimized. You can also This makes it possible to form a more favorable package shape.

According to a second aspect of the present invention, there is provided a package diameter detecting means, and a storage means for storing in advance the relationship between the package diameter and the position of the roller supporting member where the gap is constant regardless of the package diameter. Since the control means controls the roller supporting member position adjusting means based on the package diameter detected by the package diameter detecting means and the relationship between the package diameter stored in the storage means and the position of the roller supporting member, It is possible to surely obtain the same effect as the effect of claim 1.

According to a third aspect of the present invention, between a contact roller that rotates by contacting with the outer peripheral surface of the package formed by winding the bobbin on the bobbin, and between the contact roller and the outer periphery of the package on the upstream side. A yarn feeding roller that is provided so as to have a predetermined gap and rotates while bringing the yarn to be wound around the bobbin into contact with the peripheral surface thereof to deliver the yarn to the outer periphery of the package, and to support the contact roller and the yarn feeding roller. A roller supporting member and a roller supporting member position adjusting means for adjusting the position of the roller supporting member in the direction in which the predetermined gap changes are provided, and the contact roller is supported by the roller supporting member so as to be relatively displaceable. In the yarn winding machine, package diameter detecting means for detecting a package diameter, roller position detecting means for detecting a relative position of the contact roller with respect to a roller supporting member, and A gap is constant regardless of the package diameter, a storage unit is provided that stores in advance the relationship between the package diameter and the relative position of the contact roller with respect to the roller supporting member, and the package diameter detected by the package diameter detecting unit, Based on the relationship between the package diameter stored in the storage means and the relative position of the contact roller with respect to the roller support member, the roller support member position adjusting means is controlled so that the gap is constant regardless of the package diameter. Since the control means for controlling is provided, it is possible to surely obtain the same effect as that of claim 1.

As described in claim 4, the gap is 0.5 to
Since it is within the range of 3 mm, the yarn can be stably wound up without contact between the yarn feeding roller and the package, and the free length between the yarn feeding roller and the outer peripheral surface of the package can be contacted. Can be made smaller, and a package having a good shape can be formed.

According to a fifth aspect of the present invention, between a contact roller which is rotated by contacting with an outer peripheral surface of a package formed by winding a thread on a bobbin and an outer periphery of the package on the upstream side of the contact roller. A yarn feeding roller that is provided so as to have a predetermined gap and rotates while bringing the yarn to be wound around the bobbin into contact with the peripheral surface thereof to deliver the yarn to the outer periphery of the package, and to support the contact roller and the yarn feeding roller. A roller supporting member and a roller supporting member position adjusting means for adjusting the position of the roller supporting member in the direction in which the predetermined gap changes are provided, and the contact roller is supported by the roller supporting member so as to be relatively displaceable. In the yarn winding machine, since the control means for controlling the roller support member position adjusting means is provided so that the gap is within the range of 0.5 mm to 3 mm, the yarn feeding roller Without the Kkeji come into contact with each other,
The yarn can be stably wound, and the free length between the yarn feeding roller and the outer peripheral surface of the package can be reduced, so that the package having a good shape can be formed. Further, the contact pressure fluctuation can be reduced.

According to a sixth aspect of the present invention, the control is performed so that the gap between the yarn feeding roller and the outer circumference of the package changes more than a predetermined range in a part of the package winding process. Since the means controls the roller supporting member position adjusting means, it is possible to eliminate the state where the both ends of the package in the axial direction become high (ear height), and the final package shape can be improved.

As described in claim 7, the part of the process is
Since less than 20% of the time is taken during the winding process from the start of winding one package to the full winding, the time ratio of the process with a large gap increases, adversely affecting the package winding shape. It is possible to prevent the state in which both ends of the package in the axial direction become high (ear height) while preventing the application, and the final package shape can be improved.

According to the present invention, the bobbin is wound around the bobbin so that the bobbin is wound around the bobbin. A yarn feeding roller that rotates while being in contact with the outer circumference of the package and delivers it to the outer periphery of the package is arranged so as to have a predetermined gap with the outer periphery of the package, and the gap is controlled to be constant regardless of the package diameter. However, since the package is wound, the same effect as that of the first aspect can be obtained.

[Brief description of drawings]

FIG. 1 is an overall front view of a yarn winding machine for an elastic yarn for winding an elastic yarn having elasticity such as urethane rubber.

FIG. 2 is an enlarged front view of an essential part showing the configuration of a slide box.

FIG. 3 is a control system diagram of the yarn winding machine.

FIG. 4 is a diagram showing a relationship between a package diameter, a gap, and a contact roller position.

FIG. 5 is a diagram showing a relationship between a gap amount formed between a yarn feeding roller and a package and a free length until the yarn delivered from the yarn feeding roller is wound around the package.

FIG. 6 is a diagram showing a relationship between a package diameter and a gap when a basic operation is performed in a small gap and control is performed so that a large gap appears intermittently.

FIG. 7 is a diagram showing a relationship between a package diameter, a gap, and a contact roller position when the position of the contact roller is controlled to be constant with respect to the slide box.

FIG. 8 is a front view of the slide box portion showing the relationship between the package diameter and the gap.

[Explanation of symbols]

Y thread B bobbin M yarn winding machine c gap 1 Slide box (roller support member) 3 packages 4 Traverse device 13 arms 15 Contact roller position detection sensor (roll thickness detection means) 18 Contact roller 26 Thread feed roller

Claims (8)

[Claims] 1. A contact roller formed by winding a thread around a bobbin and rotating in contact with the outer peripheral surface of the package, and a predetermined gap between the contact roller and the outer periphery of the package upstream of the contact roller. A yarn feeding roller that is rotated in such a manner that the yarn to be wound around the bobbin is brought into contact with the peripheral surface of the bobbin and delivers the yarn to the outer periphery of the package; and a roller supporting member that supports the contact roller and the yarn feeding roller. And a roller support member position adjusting means for adjusting the position of the roller support member in a direction in which the predetermined gap changes, wherein the contact roller is supported by the roller support member so as to be relatively displaceable. In the machine, a yarn winding machine is provided with a control means for controlling the roller supporting member position adjusting means so that the gap becomes constant regardless of the package diameter. 2. A package diameter detection means, and a storage means that stores in advance the relationship between the package diameter and the position of the roller support member where the gap is constant regardless of the package diameter, the control means comprising: The roller supporting member position adjusting means is controlled based on the package diameter detected by the diameter detecting means and the relationship between the package diameter and the position of the roller supporting member stored in the storing means. The yarn winding machine according to Item 1. 3. A contact roller, which is formed by winding a thread around a bobbin and rotates in contact with the outer peripheral surface of the package, and has a predetermined gap between the outer periphery of the package and the upstream side of the contact roller. A yarn feeding roller that is rotated in such a manner that the yarn to be wound around the bobbin is brought into contact with the peripheral surface of the bobbin and delivers the yarn to the outer periphery of the package; and a roller supporting member that supports the contact roller and the yarn feeding roller. And a roller support member position adjusting means for adjusting the position of the roller support member in a direction in which the predetermined gap changes, wherein the contact roller is supported by the roller support member so as to be relatively displaceable. In the machine, package diameter detecting means for detecting the package diameter, roller position detecting means for detecting the relative position of the contact roller with respect to the roller supporting member, and package diameter detecting means. Regardless, the storage means is provided in which the relationship between the package diameter and the relative position of the contact roller with respect to the roller support member is stored in advance so that the gap is constant, and further, the package diameter detected by the package diameter detection means and the storage means. The relationship between the package diameter and the relative position of the contact roller with respect to the roller support member,
Based on the above, the yarn winding machine is provided with a control means for controlling the roller supporting member position adjusting means so that the gap becomes constant regardless of the package diameter. 4. The yarn winding machine according to claim 1, wherein the gap is in the range of 0.5 to 3 mm. 5. A contact roller, which is formed by winding a thread around a bobbin and rotates in contact with the outer peripheral surface of the package, and has a predetermined gap between the contact roller and the outer periphery of the package on the upstream side. A yarn feeding roller that is rotated in such a manner that the yarn to be wound around the bobbin is brought into contact with the peripheral surface of the bobbin and delivers the yarn to the outer periphery of the package; and a roller supporting member that supports the contact roller and the yarn feeding roller. And a roller support member position adjusting means for adjusting the position of the roller support member in a direction in which the predetermined gap changes, wherein the contact roller is supported by the roller support member so as to be relatively displaceable. A yarn winding machine, characterized in that the machine is provided with a control means for controlling the roller support member position adjusting means so that the gap is within a range of 0.5 mm to 3 mm. 6. A gap between the yarn feeding roller and the outer periphery of the package is formed in a part of the package winding process.
The yarn winding machine according to any one of claims 1 to 5, wherein the control means controls the roller supporting member position adjusting means so as to change more than a predetermined range. 7. The yarn according to claim 6, wherein the part of the process is less than 20% of the winding process from the start of winding one package to the full winding. Winder. 8. A bobbin is provided on the upstream side of a contact roller that rotates in contact with the outer peripheral surface of a package formed by winding a thread around the bobbin and rotates while contacting the peripheral surface of the thread to be wound around the bobbin. Then, the yarn feeding roller for delivering to the outer circumference of the package is arranged so as to have a predetermined clearance between the outer circumference of the package and the winding of the package while controlling the clearance constant regardless of the package diameter. A method for winding a yarn, characterized in that