JP2561001B2 - Winder winding control method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding control method for a winder, for example, a pan winder, which guides a yarn of a yarn supplying package by a traverse guide and winds the yarn on a bobbin rotated by a spindle.

[0002]

2. Description of the Related Art In a bun winder, bobbins 2 are mounted on spindles 1 provided in multiple weights as shown in FIG. 4, and a guide bar 4 which is moved up and down by an elevating device 3 is provided on these bobbins 2. The guide bar 4 is provided with a traverse guide 5 for guiding the yarn of the synthetic fiber Y wound on the yarn supplying package P for each weight, and the yarn Y of the yarn supplying package P is guided by the traverse guide 5. While being guided, the traverse guide 5 is moved up and down by a predetermined traverse width, and is wound around the bobbin 2 rotated by the spindle 1 to form a pan 6.

As shown in FIG. 3 (a), the traverse by the traverse guide 5 is performed by warp winding in which the traverse width Tw is gradually reduced from the beginning to the end of winding as shown in FIG. 3 (b). In addition, a pan 6 having conical taper portions formed on the top and bottom is formed.

[0004]

By the way, the most important factor in winding the pan 6 is to keep the yarn speed (tension of the yarn) constant. That is, if the tension is too low, there is a problem that the density becomes low, and it cannot be wound tightly and cannot be wound into a good shape of the bun. If it is too high, there is a problem that fuzz or yarn breakage easily occurs.

For this reason, the spindle rotational speed is linearly reduced for winding, but the yarn speed in the middle is higher than the yarn speed at the beginning and end of winding, and the tension is not constant. There is.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a winder winding control method in which the tension of the yarn is kept constant.

[0007]

In order to achieve the above object, the present invention relates to a winding control method for a winder in which a yarn is wound around a bobbin while traversing to form a package having a taper portion on the upper and lower sides of a winder. To reduce the time from the start of winding to the end of winding,
That is, the spindle rotation speed is partially lowered with respect to a virtual straight line connecting the winding start rotation speed and the winding end rotation speed.

[0008]

According to the above construction, the yarn speed does not increase during winding, and the yarn tension can be wound with a constant tension.

[0009]

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, the spindle 1 is rotated in contact with the belt in units of, for example, 8 spindles, although not shown,
The bobbin 2 mounted on the spindle 1 is rotated.

A traverse guide 5 for guiding the yarn Y from a yarn supplying package (not shown) is connected to the traverse bar 4 and is moved up and down by the elevating device 3 with a predetermined traverse width with respect to the bobbin 1. It is like this. That is, the traverse bar 4 has its both ends suspended by a belt 7 or the like so as to be able to move up and down, and the other end of the belt 7 is guided by pulleys 8 and 8 to be connected to a ball nut 9. It is provided by being screwed into a ball screw 11 connected to the forward / reverse rotation motor 10, and the forward / reverse rotation of the forward / reverse rotation motor 10 causes the forward / reverse rotation of the ball screw 11 and the upward / downward movement of the ball nut 9 to traverse the belt 7. The guide 5 can be moved up and down with a predetermined traverse width.

The rotation of the forward / reverse rotation motor 10 is detected by the sensor 12, and the detection value of the sensor 12 is input to the control device 13. Further, the traverse guide 5 is provided with a laser distance sensor 14 for detecting the winding diameter of the pan 6, and information on the winding diameter is input to the control device 13.

The rotation of the spindle 1 is detected by a rotation sensor 15
The detected value is input to the control device 13.

The control device 13 can detect the position of the traverse guide 5 from the detection value of the sensor 12 and can control the rotation of the forward / reverse rotation motor 10 to freely adjust the operation of the traverse guide 5. Based on the winding diameter information of the laser distance sensor 14, the forward / reverse rotation motor 10 is controlled so that the traverse width is preset with respect to the winding diameter.

That is, as shown in FIG. 2, a curve a of the rotational speed of the spindle 1 at which the yarn speed of the winding yarn is constant is input to the control device 13 in advance. In this curve a, the spindle rotation speed is linearly reduced as shown by b, but the winding end is the same as the rotation of the line b so that the rotation speed is slightly lower from the beginning to the middle of the winding. Is set as follows.

In the above, the spindle 1 is rotated,
The yarn Y from the yarn supplying package P is guided by the traverse guide 5, and at the position of the traverse guide 5, the yarn Y is wound around the bobbin 1 to form the awn 6.

At this time, the control device 13 controls the spindle rotation speed from the winding start to the winding end as shown by the curve a in FIG. Further, the winding diameter is input from the laser distance sensor 14 to the control device 13, and the traverse width TW is controlled according to the diameter.

By controlling the spindle rotation speed in this way, the yarn speed can be made constant from the winding start to the winding end.

[0019]

In summary, according to the present invention, the yarn speed can be wound at a constant speed by changing the spindle rotation speed.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a graph for explaining a winding control method according to the present invention.

FIG. 3 is a diagram for explaining a traverse width change at the time of winding with a pan by winding with a pan winder.

FIG. 4 is a diagram showing a pan winder.

[Explanation of symbols]

 1 Spindle 2 Bobbin 5 Traverse Guide 6 Pane (Winding Package) 6a Tapered Part Y Yarn P Yarn Supply Package

Claims (1)

(57) [Claims] 1. A winding control method for a winder, which winds a bobbin while traversing a bobbin while forming a package having a taper portion in an upper and lower direction. A winding control method for a winder, wherein the number of rotations is partially reduced with respect to a virtual straight line connecting the number of rotations at the start of winding and the number of rotations at the end of winding.