JP3726499B2 - Wire winding mechanism and method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a wire take-up mechanism for evenly winding an ultrafine wire (hereinafter referred to as a wire) such as a fine wire wound around a base material while rotating a take-up spool at high speed. And its method.
[0002]
[Prior art]
An extra fine wire such as a fine wire is wound around a predetermined core material (spool) via a winding device and then shipped as a product.
Conventionally, a mechanism as shown in FIG. 4 is used to wind this type of wire around a spool.
This type of winding mechanism includes a spool rotation motor 3 for winding the wire 1 fed in a predetermined direction by rotating the spool 2, a table 4 supporting the spool rotation motor 3, and a table 4 And a moving means 5 for reciprocating a distance d corresponding to the distance between both edges of the spool 2 in the direction of the rotation axis.
The winding of the wire 1 by this winding mechanism is performed by attaching the spool 2 to the rotating shaft 3 a of the spool rotating motor 3 and then driving the spool rotating motor 3 to rotate the spool 2 and via the moving means 5. Thus, the spool 2 is reciprocated by a distance d corresponding to the distance between the two edges 2a and 2b of the spool 2 in the direction of the rotation axis so that the wire 1 is wound around the spool 2.
[0003]
By the way, an extra fine gold wire (wire) generally used for wire bonding or the like needs to be uniformly wound around the spool for each layer in order to prevent entanglement when being drawn out from a core material such as a spool. . Here, the winding condition of the wire of each layer wound in the spool is greatly influenced by the winding speed and the reversing speed at the time of reversing the spool that is reciprocated because the winding rotation and the reciprocating movement are interlocked. . In recent years, the wire winding speed tends to increase in order to increase the productivity of the wire.
[0004]
[Problems to be solved by the invention]
However, in the winding of the wire by the conventional wire winding mechanism, when the winding speed is increased, the inertia immediately before the reversal is greatly affected at the time of reversing the reciprocating motion, and the reversal delay with respect to the winding speed becomes remarkable. For this reason, the winding pitch of the wire shrinks at both ends of the spool, or the winding conditions change, and this causes entanglement when the wire is unwound, and the wire bites into both ends of the spool and makes scratches It was the cause.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a wire winding mechanism and a method for winding each layer of the wire uniformly on a spool in a high-speed winding process of a wire such as a fine wire.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a wire winding mechanism according to the present invention includes a motor for rotating a spool, a table supporting the motor, and a rotating shaft of the spool for winding the wire on the spool. In a wire take-up mechanism constituted by an actuator for reciprocating a distance corresponding between both edges of the spool in the direction,
A table pressing member that pushes the table in the reversing direction with a predetermined pressure just before the reversing position in the moving direction of the table to be reciprocated is arranged on both sides along the moving direction of the table.
[0007]
In the present invention, it is preferable that the table pressing member is an air cylinder.
[0008]
In the present invention, it is preferable that the predetermined pressure to be pushed in the reverse direction of the table pressing member is smaller than the thrust of the actuator in the direction opposite to the pushing direction of the table pressing member. .
[0009]
In the wire winding method according to the present invention, the spool is rotated and the spool is reciprocated a distance corresponding to both ends of the spool in the rotation axis direction of the spool to wind the wire around the spool. In the wire winding method,
Immediately before the reciprocating spool reaches the reversing position, the spool is pushed in the reversing direction with a predetermined pressure to reduce the inertia generated just before the reversing of the spool.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a wire winding mechanism and method according to the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an embodiment of a wire winding mechanism used in the wire winding method according to the present invention. FIG. 2 is a state explanatory view showing a state at the time of rewinding the wire winding in this embodiment, (a) is a state immediately before reversing the wire winding in one direction, (b) is a rewinding of the wire winding in one direction. The state immediately before reversing the winding of the wire in the other direction is shown. FIG. 3 is a perspective view of the spool showing a state where the winding of the wire is finished by the wire winding method of the present embodiment. .
[0011]
The wire winding mechanism of this embodiment includes a spool rotation motor 3 for rotating the spool 2, a table 4 that supports the spool rotation motor 3, and an actuator 5 in order to wind the wire 1 around the spool 2. ing.
The spool 2 is attached to the rotation shaft 3 a of the spool rotation motor 3. The actuator 5 includes a ball screw portion 5 a and an actuator drive motor 5 b that is directly connected to the ball screw portion 5 a and can rotate in the forward and reverse directions. The ball screw portion 5 a is connected to the table 4. The actuator 5 can reciprocate the table 4 in the direction of the rotation axis of the spool 2 by a distance d corresponding to the distance between the two edges 2a and 2b of the spool 2.
[0012]
Here, the wire winding mechanism of the present embodiment is different from the conventional wire winding mechanism in that the cylinders 6 and 7 are arranged on both sides of the table 4 in the reciprocating direction, and the actuator 5 is at the end position of the stroke. When the table 4 is reversed, the tip portions 6a and 7a respectively push the side surfaces 4a and 4b of the table 4 in the reverse direction with a predetermined pressure. The cylinders 6 and 7 are attached to cylinder support members 9 and 10 fixed to the wire winding mechanism main body base 8.
The pressure with which the cylinder 7 pushes the table 4 in the reverse direction is adjusted to be smaller than the thrust of the actuator 5 in the direction opposite to the direction in which the cylinder 7 pushes.
In addition, the wire 1 wound by the winding mechanism of the present embodiment is wound around a base material or the like, and is fed out from a feed-out part in which the base material is set. (Not shown). Further, the reversal of the moving direction of the table 4 by the actuator 5 reverses the rotation of the actuator drive motor 5b in the reverse direction when the stroke of the actuator 5 comes to the end via a control means such as a microcomputer (not shown), for example. Is to be done.
[0013]
Next, a wire winding operation using the wire winding mechanism of the present embodiment will be described.
In the wire winding mechanism shown in FIG. 2 (a), the spool rotating motor 3 is rotated in a predetermined direction, and the wire 1 fed from a feeding portion (not shown) is taken up by the spool 2. In FIG. 2 (a), immediately before the drive motor (not shown) of the actuator 5 is reversed, the end 4a of the table 4 has a smaller force than the thrust of the actuator 5 in the arrow B direction. The distal end 6a is reached in the direction of arrow C while reaching the end.
From this state, the drive motor (not shown) of the actuator 5 is reversed by the control means not shown, and the actuator 5 moves the table 4 and the spool 2 in the direction of arrow A (right side in the figure). Here, according to the wire winding mechanism of the present embodiment, the inertia generated when the table 4 is reversed is canceled by the thrust of the cylinder 6 and reduced as much as possible.
[0014]
Subsequently, when the table 4 and the spool 2 are moved in the direction of the arrow A and the stroke of the actuator 5 in the direction of the arrow A approaches the end, the end 4b of the table 4 is moved to the actuator as shown in FIG. The end portion 7a of the cylinder 7 having a force smaller than the thrust force in the arrow A direction 5 is pushed in the arrow D direction to reach the end.
Then, the motor (not shown) of the actuator 5 is reversed by the control means not shown, and the actuator 5 moves the table 4 and the spool 2 in the direction of arrow B (left side in the figure). Here, according to the wire winding mechanism of the present embodiment, the inertia generated when the table 4 is reversed is canceled out by the thrust of the cylinder 7 and reduced as much as possible.
[0015]
Subsequently, the table 4 and the spool 2 are moved in the direction of arrow B, and the end 4a of the table 4 reaches the end while pushing the tip 6a of the cylinder 6 near the end of the stroke of the actuator 5 in the direction of arrow A. Here again, the cylinder 6 cancels the inertia of the reversal, and this operation is repeated until the end of winding.
After the winding is completed, the spool 2 is removed from the rotating shaft 3a of the spool rotating motor 3 to complete a product in which the wire 1 is uniformly wound around the spool 2 as shown in FIG.
[0016]
Therefore, according to the wire winding method using the wire winding mechanism of the present embodiment, the inertia when the spool is reversed is reduced as much as possible. For this reason, even if the winding speed is increased and the spool is rotated, the wire can be wound in a uniform state.
[0017]
【The invention's effect】
As described above, according to the present invention, in the winding process of the wire to the spool, even if the winding is performed at a high speed, the winding state of each layer can be made uniform, and the entanglement and scratching at the time of feeding the wire can be prevented. And the quality and productivity of the wire as a product can be improved.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a wire winding mechanism used in a wire winding method according to the present invention.
FIG. 2 is a state explanatory diagram showing a state at the time of reversing the wire winding in the present embodiment, (a) is a state immediately before reversing the wire winding in one direction, (b) is a wire winding in one direction Each state after reversal and immediately before reversing the wire winding in the other direction is shown.
FIG. 3 is a perspective view of the spool showing a state where the winding of the wire is finished by the wire winding method of the present embodiment.
FIG. 4 is a front view of a conventional wire winding mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wire 2 Spool 3 (Spool rotation) Motor 4 Table 4a, 4b End part 5 Actuator 5a Ball screw 5b (Actuator drive) Motor 6,7 Cylinder 6a, 7a Tip part 8 Wire winding mechanism main body base | substrate 9,10 Cylinder Support member

Claims (4)

In order to wind the wire around the spool, a motor for rotating the spool, a table for supporting the motor, and the table reciprocating a distance corresponding to both edges of the spool in the rotation axis direction of the spool. In the wire winding mechanism constituted by the actuator for moving,
Winding the wire, characterized in that table pressing members that push the table in the reversing direction with a predetermined pressure are arranged on both sides along the moving direction of the table immediately before the reversing position in the moving direction of the table to be reciprocated. mechanism. The wire winding mechanism according to claim 1, wherein the table pressing member is an air cylinder. The predetermined pressure that pushes in the reverse direction of the table pressing member is made smaller than the thrust of the actuator in the direction opposite to the pushing direction of the table pressing member. The wire winding mechanism as described. In the wire winding method in which the spool is rotated and the spool is reciprocated by a distance corresponding to both ends of the spool in the rotation axis direction of the spool to wind the wire around the spool.
Immediately before the reciprocating spool reaches a reversing position, the spool is pushed in a reversing direction with a predetermined pressure to reduce the inertia generated just before the reversing of the spool. Wire winding method.

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