JPH082814A - Take-up motion - Google Patents

Abstract

PURPOSE:To implement both cheese winding and cone spooling by changing the reciprocating speed of a traverse guide for guiding yarn, while the traverse guide being traveling from one traverse end to the other. CONSTITUTION:The travel speed of a traverse guide 2 for guiding yarn Y is the traverse direction component of angular velocity due to the oscillation of an arm 5 controlled with a control cam 12, added to the speed of a slider 6 reciprocating at constant velocity on the operation of a cylindrical cam 9 or the like. In the case of cone spooling, the control cam 12 is inclined and the slider 6 is thereby made to accompany the large diameter side of a cone. Also, the arm 5 oscillates in a direction opposite to the travel direction of the slider 6 to decelerate the traverse guide 2. As a result, a winding amount around the large diameter of the cone increases and take-up tension is thereby made uniform. In the case of cheese winding, the control cam 12 is kept in parallel to the reciprocating direction of the slider 6 and the oscillation of the arm 5 is thereby prevented. As a result, the traverse guide 2 reciprocates with the slider 6 at constant speed, thereby keeping a winding amount constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for winding a yarn on a package.

[0002]

2. Description of the Related Art A winding device attached to various textile machines such as a spinning machine, a twisting machine, or a winder, winds a yarn in a package while directly traversing the yarn with a grooved drum, or by a cylindrical cam or the like. For example, there is one that is wound around a package that is rotated by a friction roller while traversing with a reciprocating traverse guide.

Conventionally, in the case of winding a yarn into a cheese-wound package in such a winding device, a cylindrical drum or a cam may basically traverse at a constant speed.
In the case of cone winding, since the winding amount on the cone large diameter side is large, a conical drum is used, or a so-called accelerated drum in which the angle of the cam groove gradually decreases toward the large diameter side is used. It is necessary to adjust the winding amount and make the winding tension uniform. Therefore, in order to perform both cheese winding and corn winding with one winding device, the drum or cam must be replaced, but this replacement work is very troublesome.

[0004]

SUMMARY OF THE INVENTION In view of the above problems of the conventional winding device, the present invention makes it possible to wind both cheese winding and corn winding without replacing parts such as drums and cams. An object of the present invention is to provide a simple winding device.

[0005]

A traverse guide for guiding a yarn, a traverse guide driving means for reciprocating the traverse guide, and a moving speed of the traverse guide while the traverse guide moves from one end to the other end of the traverse. A traverse guide speed changing means that can be changed is provided. Further, a slider that reciprocates in the traverse direction, an arm swingably provided on the slider, a traverse guide provided at the tip of the arm, and a control cam arranged along the moving direction of the slider. And a follower that slides along the control cam is provided on the arm, and the control cam is provided so as to be inclined with respect to the moving direction of the slider. The control cam is provided so as to be rotatable about one end thereof as a fulcrum so as to be tiltable. Further, the guide groove of the control cam has an arc shape.

[0006]

The moving speed of the traverse guide is obtained by adding the traverse direction component of the angular speed due to the swing of the arm controlled by the control cam to the speed of the slider which reciprocates at a constant speed by a cylindrical cam or the like.

When the cone is wound, when the control cam is tilted, the arm moves in the direction opposite to the slider advancing direction and the traverse guide decelerates as the slider advances toward the cone large diameter side. The winding amount on the large diameter side increases, and the winding tension is made uniform.

When cheese is wound, the arm is prevented from swinging by making the control cam parallel to the slider reciprocating direction, and the traverse guide reciprocates at a constant speed together with the slider to keep the amount of winding constant.

[0009]

Embodiments will be described with reference to the drawings.

1 and 2 show a winding device 1 according to a first embodiment of the present invention. In the drawing, a winding device 1 winds a yarn Y on a rotating package P, which is rotatably supported by a cradle arm 3 while being traversed by a traverse guide 2 and is pressed against a friction roller 4 which is driven and rotated.

The traverse guide 2 is fixed to the tip of a bell crank-shaped arm 5 bent at 90 °, and the arm 5 is centered on a shaft 8 provided on a slider 6 slidably supported by a guide bar 7. It is provided so that it can swing freely.
Further, the slider 6 is provided with a boat-shaped follower 11 that engages with the cam groove 10 of the cylindrical cam 9 so as to be rotatable coaxially with the shaft 8. The cam groove 10 is formed in a spiral shape on the peripheral surface of the cylindrical cam 9 at a constant angle. In the illustrated example, the cam groove 10 reaches the other end in three turns and reciprocates once in six turns. The cylindrical cam 9 is rotated by a power source (not shown) in synchronization with the friction roller 4.

At the other end of the arm 5, the arm 5
A guide pin 14 that engages with a linear guide groove 13 formed on the lower surface of the control cam 12 that restricts the swing of the control cam 12 and that is a follower of the control cam 12 is provided upright. The control cam 12 positions the slider 6 at the left end in FIG. 2 (on the side of the cone small diameter when the cone is wound), and at that position, the arm 5 is in an upright state in which the slider 6 is always perpendicular to the sliding direction of the slider 6. As described above, the guide pin 14 at the above position is rotatably provided about a shaft 15 which is erected so as to have its axis center. That is, the shaft 15 is pivotally supported in a bearing hole provided in the plate 16, and a pin 17 standing on the other end of the control cam 12 is engaged with a long hole 19 formed in a bracket 18.

The elongated hole 19 is formed in an arc shape with the shaft 15 as the center, and when the pin 17 is located at the lower end as in 17c in FIG. 2, the control cam 12 is located as in 12c and the guide groove 13 is It is provided so as to be parallel to the guide bar 7. Further, the pin 17 can be fixed to the bracket 18 by means such as using an end portion of the pin 17 as a bolt and screwing a nut (not shown) onto the bolt.

Next, the operation will be described based on the first embodiment.

When the cheese is wound by the winding device 1, the control cam 12 is rotated around the shaft 15 to be positioned at 12c indicated by a two-dot chain line in FIG. 2, and the control cam 12 is fixed at the position. To do. In this state, when the cylindrical cam 9 is rotated, the follower 11 engaging with the cam groove 10 having a constant angle of the cylindrical cam 9 is guided by the cam groove 10 and the slider 6 reciprocates at a constant speed along the guide bar 7. Slide. At the same time, the arm 5 swingably provided on the slider 6 is restricted in swing by the guide pin 14 being guided by the guide groove 13 parallel to the guide bar 7, and 5 and 5c in FIG. , The traverse guide 2 provided at the tip of the arm 5 reciprocates at a constant speed while maintaining the upright state.
Traverses the yarn Y at a constant speed and winds it into a cheese-wrapped package Pc.

When cone winding is performed by the winding device 1, the control cam 12 is set to the cheese winding position 12c.
The shaft 15 is fixed at a position indicated by a solid line, which is inclined by an appropriate angle θ according to the taper of the cone. In this state, when the cylindrical cam 9 is rotated and the slider 6 reciprocally slides at a constant speed as described above, the arm 5 is guided by the guide groove 13 in which the guide pin 14 is inclined,
As it moves from the cone small diameter end side on the left side in FIG. 2 to the cone large diameter side on the right side, it gradually oscillates around the shaft 8 toward the cone small diameter side in the opposite direction to the moving direction, and the cone large diameter at the right end in FIG. At the end, it inclines like 5 '. The swinging of the arm 5 gives a negative acceleration relative to the moving speed of the traverse guide 2, so that the moving speed of the traverse guide 2 decreases as it goes toward the cone large diameter side. . Then, as the slider 6 is reversed and the arm 5 moves from the cone large diameter side to the cone small diameter side, the arm 5 swings in the direction to recover the inclination, and the traverse guide 2 gradually accelerates to the cone small diameter end. Reach As described above, the traverse guide 2 reduces the traverse speed toward the cone large diameter side, so that the winding amount is distributed more toward the cone large diameter side, and the traverse guide 2 is divided into the large diameter side and the small diameter side. It is possible to wind cone windings with different winding amounts.

Further, by increasing the inclination θ,
The traverse width can be reduced and fluctuations in unwinding tension can be reduced. Moreover, it is possible to prevent ribbon winding and the like by changing the inclination θ during winding. Also, the inclination θ
May be changed while the traverse guide moves from one end of the traverse to the other end. The mechanism for changing the moving speed of the traverse guide while the traverse guide moves from one end to the other end of the traverse is not limited to the above embodiment.

FIG. 3 shows a winding device 21 according to the second embodiment of the present invention. In the winding device 21, the guide groove 23 of the control cam 22 that regulates the swing of the arm 5 is formed in an arc shape in which the inclination gradually increases from the cone small diameter side to the large diameter side. The movement trajectory of the traverse guide 2 in this case is shown by a solid line in the graph of FIG. In the figure, the vertical axis represents time and the horizontal axis represents the moving distance, and the maximum value of the moving distance is the winding width. As a result, it is possible to give a larger amount of change in the winding amount toward the larger diameter side of the cone.

When cheese is wound in the winding device 21, the control cam 22 is replaced with a guide groove having a straight guide groove.
It becomes possible immediately by removing the plate 16 shown in FIG. 1, which is easier than each step of exchanging the cylindrical cam 9 and the like. Further, by devising the curved shape of the guide groove of the control cam 22, it is possible to control the change in the winding amount in the axial direction to form various winding shapes and prevent the package from becoming ear-height. It is possible.

[0020]

Since the winding device of the present invention is constructed as described above, it has the following effects.

A traverse guide for guiding the yarn, a traverse guide driving means for reciprocating the traverse guide, and a traverse guide for changing the moving speed of the traverse guide while the traverse guide moves from one end to the other end of the traverse. With the speed change means,
The winding amount can be changed in the traverse direction, and both cheese winding and corn winding can be performed.

A slider reciprocating in the traverse direction,
An arm provided on the slider so as to be swingable, a traverse guide provided at the tip of the arm, and a control cam arranged along the moving direction of the slider are provided. A follower that slides along the slider is provided, and the control cam can be tilted with respect to the moving direction of the slider, so the tilt angle of the control cam can be changed without replacing parts such as the grooved drum and cylindrical cam. You can switch between cheese roll and corn roll just by doing.

Since the control cam is provided so as to be rotatable about its one end as a fulcrum and can be tilted, the tilt angle of the control cam can be changed during winding, and ribbon winding and the like can be prevented. Further, the inclination angle can be changed while the traverse guide is moving from one end to the other end of the traverse, and the moving speed of the traverse guide can be freely changed.

Since the guide groove of the control cam has an arc shape, a large amount of change in the winding amount can be provided in the traverse direction, and the winding tension can be made more uniform when the cone is wound and a good winding form can be obtained. Also, switching between cheese winding and corn winding can be easily performed only by replacing the cam.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a winding device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the winding device of the first embodiment of the present invention.

FIG. 3 is a plan view showing a winding device according to a second embodiment of the present invention.

FIG. 4 is a graph showing a movement trajectory of a traverse guide.

[Explanation of symbols]

 1, 21 Winding device 2 Traverse guide 5 Arm 6 Slider 7 Guide bar 9 Cylindrical cam 12,22 Control cam 13,23 Guide groove 14 Guide pin P package (Cone winding) Pc package (Cheese winding) Y thread

Claims (4)

[Claims] 1. A traverse guide for guiding a yarn, traverse guide drive means for reciprocating the traverse guide, and a moving speed of the traverse guide can be changed while the traverse guide moves from one end to the other end of the traverse. A winding device comprising traverse guide speed changing means. 2. A slider that reciprocates in the traverse direction, an arm swingably provided on the slider, a traverse guide provided at the tip of the arm, and a slider provided along the moving direction of the slider. And a control cam, the follower sliding along the control cam is provided on the arm, and the control cam is provided so as to be inclined with respect to the moving direction of the slider. 3. The winding device according to claim 2, wherein the control cam is provided so as to be rotatable about one end thereof as a fulcrum and can be tilted. 4. The winding device according to claim 2, wherein the guide groove of the control cam has an arc shape.