JP2007045538A - Small diameter wire winding method and small diameter wire winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small diameter wire winding method and a small diameter wire winding device capable of winding a small diameter wire having suppressed wire curl and excellent linearity around a spool. <P>SOLUTION: In the small diameter wire winding method to wind a gold wire 2 delivered from a bobbin 3 around which the gold wire 2 is wound around the spool 4, change of a delivery position by the bobbin 3 with respect to one point on a winding-wire path connecting the delivery position with a winding position by the spool 4 is detected. When the change exceeds a predetermined threshold value, to set the delivery position with respect to the one point within the threshold value, the gold wire 2 is wound around the spool 4 while the bobbin 3 is moved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a thin wire winding method and a thin wire winding device for winding a thin metal wire such as a gold wire used as a bonding wire.

Bonding wires are used for the connection of semiconductor products, for example, large-scale integrated circuits such as LSIs. In recent years, such bonding wires tend to have a smaller wire diameter, and short-circuit defects are more likely to occur due to the bending of the wire itself, so the tension can be reduced uniformly to avoid this. Manufactured by a thin wire winding device (see, for example, Patent Document 1).
This thin wire winding device includes a bobbin serving as a feeding body around which a gold wire is wound, and a spool serving as a winding body that winds up the gold wire fed out from the bobbin. In addition, a dancer and a sheave as a guide roller for adjusting the tension of the gold wire on the winding path are provided on the winding path connecting the feeding position of the gold wire from the bobbin and the winding position of the gold wire by the spool. ing.
Japanese Patent Laid-Open No. 5-132232

  However, the following problems remain in the conventional thin wire winding device. That is, when the gold wire wound around the bobbin is successively fed out, the feeding position of the gold wire moves in the axial direction of the bobbin. Then, the gold wire fed out from the bobbin enters at an angle with respect to the sheave. Therefore, there is a problem that a load is applied to the gold wire, and wire wrinkles easily occur on the gold wire wound around the spool.

  The present invention has been made in view of the above-described problems, and provides a thin wire winding method and a thin wire winding device capable of winding a thin wire such as a gold wire, etc., having excellent straightness, in which wire wrinkles are suppressed, onto a spool. The purpose is to do.

  The present invention employs the following configuration in order to solve the above problems. That is, the thin wire winding method of the present invention is a thin wire winding method in which the thin wire fed out from the feeding body around which the thin wire is wound is wound up by the winding body, the feeding position by the feeding body and the winding body. The change of the feeding position with respect to one point on the winding path connecting the winding position is detected, and when the change exceeds a predetermined threshold, the feeding position with respect to the one point is within the threshold. The thin wire is wound up by the winding body while the feeding body is moved.

  Moreover, the thin wire winding device of the present invention includes a feeding body around which the thin wire is wound and a winding body that winds up the thin wire, and winds up the thin wire fed out from the feeding body by the winding body. In the thin wire winding device, the feeding body moving means for moving the feeding body with respect to one point on the winding path connecting the feeding position by the feeding body and the winding position by the winding body, A feeding position detecting means for detecting a feeding position; a discriminating means for judging that the feeding position detected by the feeding position detecting means exceeds a predetermined threshold with respect to the one point; and a movement by the feeding body moving means. And a moving direction changing means for changing the direction.

  According to these inventions, when the thin wire is drawn out from the feeding body, the thin wire is wound around the feeding body, so that the feeding position with respect to the winding position changes. Therefore, the fluctuation of the winding path is reduced by feeding the thin wire while appropriately moving the feeding body with respect to this one point so that the feeding position with respect to one point on the winding system path is within a predetermined threshold. Thereby, the load given to a thin wire at the time of winding of the thin wire to a winding body can be reduced. Therefore, it is possible to obtain a winding body around which the thin wire with the wire rod suppressed is wound.

Further, in the thin wire winding method of the present invention, the feeding body is capable of reciprocating in the rotation axis direction of the feeding body, and the moving direction of the feeding body is reversed when the change exceeds the threshold value. Is preferred.
Further, in the thin wire winding device of the present invention, the feeding body moving means reciprocates the feeding body in the rotation axis direction of the feeding body, and the moving direction changing means reverses the moving direction of the feeding body. It is preferable.
According to these inventions, the feeding body is moved in the rotation axis direction of the feeding body, and when the feeding position with respect to one point on the winding path exceeds a predetermined threshold, the moving direction of the feeding body is reversed. Then, the thin line is wound in a state where the feeding position is within the threshold value. In this way, the thin wire with the wire wrinkles suppressed is obtained in the same manner as described above.

Further, the thin wire winding method of the present invention detects the moving direction of the feeding position by feeding the thin wire from the feeding body in a state where the movement of the feeding body is stopped, and is reverse to the moving direction of the feeding position. It is preferable to provide a winding direction discriminating step for moving the feeding body in the direction.
According to this invention, by moving the feeding body in the direction opposite to the moving direction of the feeding position, when winding the thin wire with the winding body, the feeding position with respect to one point on the winding path is within the threshold value. The feeding body moves.

In the thin wire winding device of the present invention, it is preferable that the feeding position detecting means includes a plurality of thin wire detecting means arranged so as to intersect the winding path.
According to the present invention, when the winding path is changed by feeding a thin wire from the feeding body and moving the feeding position, the changed winding path is detected by the plurality of arranged thin line detecting means. The feeding position is detected from the detected result, and the feeding position for one point on the winding path is controlled.

  According to the thin wire winding method and the thin wire winding device of the present invention, the load on the thin wire fed out from the feeding body is reduced by setting the feeding position with respect to one point on the winding path within a predetermined threshold. As a result, the fine wire wound around the winding body can be made into a fine wire with good straightness, in which wire wrinkles are suppressed.

Hereinafter, an embodiment of a thin wire winding device according to the present invention will be described with reference to the drawings.
The thin wire winding device 1 according to the present embodiment performs rewinding of a gold wire (thin wire) 2 that is a bonding wire for connecting an IC chip electrode and an external lead terminal, for example. As shown in FIG. 1, the thin wire winding device 1 includes a bobbin (feeding body) 3 around which a gold wire 2 is wound, and a spool (winding body) that winds up the gold wire 2 fed out from the bobbin 3. ) 4, a dancer 5 provided on a winding path connecting a feeding position of the gold wire 2 from the bobbin 3 and a winding position of the gold wire 2 by the spool 4, and sheaves 6 a and 6 b as a plurality of guide rollers, A feeding position detecting means (feeding position detecting means) 7 and a control unit 8 for controlling them are provided.

The gold wire 2 is formed of, for example, Au (gold) having a purity of 99.99%, and the wire diameter thereof is, for example, 18 μm. And this gold | metal wire 2 is manufactured through the wire drawing process and annealing process which are a pre-process.
The bobbin 3 is attached to an output shaft of a feeding motor 11 as a driving source, and the gold wire 2 is fed out by rotating by the driving of the feeding motor 11. The feeding motor 11 is connected to a feeding traverse motor (feeding body moving means) 12 that reciprocates the feeding motor 11 and the bobbin 3 in the rotation axis direction of the bobbin 3. As a result, the bobbin 3 can move in the directions of arrows A1 and A2 shown in FIG. In the present embodiment, the feeding position indicates a position where the gold wire 2 is fed from the bobbin 3 as indicated by a point P1 shown in FIG.

  The spool 4 is mounted on the outer periphery of a spool holder 16 provided on the output shaft of a winding motor 15 as a drive source, and winds the gold wire 2 fed out from the bobbin 3 at a predetermined rotational speed. The spool holder 16 is rotated by driving the take-up motor 15 and is reciprocated in the axial direction by the take-up traverse motor 17 so that the gold wire 2 is wound around the spool 4 so as not to adhere to each other in the axial direction. It is configured to be.

The dancer 5 has a function of detecting a tension of the gold wire 2 on the winding path and applying a constant load to the gold wire 2, and is an arm supported so as to be swingable around a fulcrum 21. 22 and a roller 23 rotatably supported at the tip of the arm 22. The dancer 5 guides the gold wire 2 fed out on the roller 23 on the roller 23. The dancer 5 swings according to the tension of the gold wire 2 that changes according to the winding amount of the gold wire 2 wound around the spool 4 per unit time.
The dancer 5 is provided with a swing angle detector 24. The swing angle detector 24 detects an angle when the dancer 5 swings around the fulcrum 21 in accordance with a change in the tension of the gold wire 2. Then, the swing angle detector 24 transmits the angle detection result to the tension control means 41 described later of the control unit 8.
The sheaves 6a and 6b are disposed on both sides of the dancer 5 in the winding path, and are rotatably supported on the winding path.
Here, the dancer 5 and the sheaves 6a and 6b are provided so that the gold wire 2 is located on a substantially plane when the gold wire 2 is fed out to the dancer 5 and the sheaves 6a and 6b. Thereby, the extra load given to the gold wire 2 fed out to the dancer 5 and the sheaves 6a and 6b is reduced. In the present embodiment, one point on the winding path indicates a position where the gold wire 2 reaches the sheave 6a as indicated by a point P2 shown in FIG.

The feeding position detection means 7 includes eight fiber sensors (thin wire detection means) 31a to 31h, a base 32 on which the fiber sensors 31a to 31h are provided, and a linear encoder 33 that detects the position of the bobbin 3. I have.
The eight fiber sensors 31a to 31h are arranged so that the fiber sensors 31a to 31d and the fiber sensors 31e to 31h are line symmetric with respect to the symmetry axis L substantially parallel to the winding path of the gold wire 2. Has been. These fiber sensors 31 a to 31 h transmit information indicating that the gold wire 2 has passed to the sensor detection determination means 42 described later of the control unit 8 when the gold wire 2 has passed over the respective fiber sensors.

The fiber sensors 31a and 31e are provided on the base end side in the feeding direction of the gold wire 2 in the winding path and at the farthest distance from the symmetry axis L as compared with the other fiber sensors 31b to 31h. It has been.
The fiber sensors 31b and 31f are on the leading end side in the feeding direction of the gold wire 2 in the winding path as compared with the fiber sensors 31a and 31e, and compared with the other fiber sensors 31a, 31c, 31d, 31g, and 31h. It is provided at a position where the distance from the symmetry axis L is small.
The fiber sensors 31c and 31g are provided at positions where the distance from the symmetry axis L is slightly larger on the leading end side in the feeding direction of the gold wire 2 in the winding path than the fiber sensors 31b and 31f.
The fiber sensors 31d and 31h are provided at positions where the distance from the symmetry axis L is slightly larger on the leading end side in the feeding direction of the gold wire 2 in the winding path than the fiber sensors 31c and 31g.
The installation location of these fiber sensors 31a to 31h depends on the distance between the bobbin 3 and each of the fiber sensors 31a to 31h, but the feeding position of the gold wire 2 fed out from the bobbin 3 is one point on the winding path as shown in FIG. In the arrow A1 direction or the A2 direction shown in FIG. 2, the movement is arranged such that it is possible to detect that the feeding position has moved when it moves, for example, 2 cm, which is a threshold value.

  The linear encoder 33 is an absolute linear encoder, and includes a detector 33 a provided on the base 32 and a detector 33 b that moves together with the bobbin 3. The linear encoder 33 detects a relative position of the bobbin 3 moved by the feeding traverse motor 12 with respect to the base 32 and transmits the detected position to an initial position determination unit 43 described later of the control unit 8.

The control unit 8 includes tension control means 41, sensor detection determination means 42, initial position determination means 43, unwinding direction determination means 44, traverse inversion means 45, and winding control means 46.
The tension control means 41 controls the rotation speed of the bobbin 3 by the feeding motor 11 based on the detection result of the swing angle of the dancer 5 from the swing angle detector 24 of the dancer 5.
The sensor detection discriminating means 42 discriminates whether any of the fiber sensors 31 a to 31 h has detected the gold wire 2, and sends the initial position discriminating means 43, the unwinding direction discriminating means 44, and the traverse reversing means 45. Send.

The initial position discriminating means 43 controls the feeding position so that the feeding position of the gold wire 2 fed out from the bobbin 3 follows the symmetry axis L in the initial step described later.
The unwinding direction discriminating means 44 discriminates the unwinding direction of the gold wire 2 wound around the bobbin 3 and discriminates the traverse direction of the bobbin 3 by the feeding traverse motor 12 in the unwinding direction discriminating step described later.
The traverse reversing means 45 is used in the traversing direction of the bobbin 3 by the feeding traverse motor 12 so that the deviation of the feeding position of the gold wire 2 fed out from the bobbin 3 with respect to the symmetry axis L is within a predetermined range in the winding step described later. And control traverse speed.
The winding control means 46 controls the rotation speed of the spool 4 by the winding motor 15 and the winding position of the spool 4 by the winding traverse motor 17, and the gold wire 2 has a predetermined tension with respect to the spool 4. It should be rewound by a predetermined length.

Next, a gold wire winding method using the thin wire winding device 1 will be described.
As shown in FIG. 3, the thin wire winding method includes an initial step ST1, a winding direction determining step ST2, and a winding step ST3.
First, the initial process ST1 will be described. In this initial step ST1, first, the gold wire 2 is wired from the bobbin 3 to the spool 4 along the winding path. At this time, the winding position of the gold wire 2 by the spool 4 is set substantially on the same plane as the gold wire 2 wired to the dancer 5 and the sheaves 6a and 6b.

Next, the bobbin 3 is moved in the arrow A1 direction or the arrow A2 direction shown in FIG. 1 by driving the feeding traverse motor 12, and the linear encoder 33 causes the initial position discriminating means 43 to move the bobbin 3 and the base 32 relative to each other. Sends location information. Then, the initial position determination unit 43 records position information when the sensor detection determination unit 42 determines that the gold wire 2 has passed over the fiber sensor 31a, for example, in a memory or the like. The bobbin 3 is moved in the direction of arrow A2 or arrow A1 shown in FIG. 1, and the initial position determination means 43 is used when the sensor detection determination means 42 determines that the gold wire 2 has passed over the fiber sensor 31e. Record the location information in the same way. After that, the initial position discriminating means 43 drives the feeding traverse motor 12 so that the gold wire 2 is fed out from the bobbin 3 along the symmetry axis L at the intermediate position from the recorded both position information, and the bobbin 3 is moved to the arrow. Move in the direction of A1 or arrow A2, and change the feeding position.
As described above, the initial step ST1 is performed. Here, in the initial step ST1, the winding motor 15 and the winding traverse motor 17 are not driven.

  In the initial process ST1, acquisition of position information is performed in the order of the fiber sensors 31a and 31e, but may be performed in the order of the fiber sensors 31e and 31a. Moreover, although the initial position was discriminated using the fiber sensors 31a and 31e, it may be acquired using any two of the fiber sensors 31a to 31h. Further, any one of the fiber sensors 31a to 31h is used for acquiring the initial position, and the distance between the fiber sensor and the axis of symmetry L is recorded in advance, so that only one fiber sensor is used for the initial operation. You may acquire a position.

  Next, the unwinding direction determination step ST2 will be described. In the unwinding direction determination step ST2, the feeding motor 11 and the winding motor 15 are driven without driving the feeding traverse motor 12, and the gold wire 2 wound around the bobbin 3 is fed out from the bobbin 3. At this time, when the gold wire 2 is fed out, the feeding position of the gold wire 2 from the bobbin 3 is changed to the arrow A1 direction or A2 shown in FIG. 1 according to the winding direction of the gold wire 2 wound around the bobbin 3. Moving.

  Here, when the feeding position of the gold wire 2 from the bobbin 3 moves in the direction of the arrow A1 shown in FIG. 1, the sensor detection discriminating means 42 detects the gold wire 2 in the order of the fiber sensors 31b and 31c. When the unwinding direction discriminating means 44 determines that the gold wire 2 is detected in the order of the fiber sensors 31b and 31c, the unwinding direction of the gold wire 2 wound around the bobbin 3 is shown in FIG. It is determined that the direction is the arrow A1 direction. The unwinding direction discriminating means 44 drives the feeding traverse motor 12 so that the traverse direction of the bobbin 3 is in the direction of arrow A2 shown in FIG.

On the other hand, when the feeding position of the gold wire 2 from the bobbin 3 moves in the direction of the arrow A2 shown in FIG. 1, the sensor detection discriminating means 42 pulls the gold wire 2 in the order of the fiber sensors 31f and 31g as described above. Detect. When the unwinding direction discriminating means 44 discriminates that the gold wire 2 is detected in the order of the fiber sensors 31f and 31g, the feeding traverse motor 12 so that the traverse direction of the bobbin 3 becomes the A1 direction shown in FIG. Drive. In this manner, the gold wire 2 drawn out from the bobbin 3 is drawn out along the symmetry axis L.
As described above, the unwinding direction determination step ST2 is performed.

  Next, the winding process ST3 will be described. In the winding process ST3, as described above, the feeding wire traverse motor 12 moves the bobbin 3 in the direction of the arrow A1 or arrow A2 shown in FIG. Take up. Here, when the gold wire 2 is sequentially drawn out from the bobbin 3, the unwinding direction of the gold wire 2 is reversed by the drawing position of the gold wire 2 reaching the end of the bobbin 3. Further, the speed at which the feeding position of the gold wire 2 moves by feeding the gold wire 2 from the bobbin 3 may be slower than the traverse speed of the bobbin 3 in the traverse direction. As a result, the feeding position of the gold wire 2 moves as indicated by a point P1 ′ or a point P1 ″ shown in FIG. 1. In this way, the feeding position of the gold wire 2 moves to move out the bobbin 3. An excessive load is applied to the gold wire 2 that has been removed.

Therefore, first, it is determined whether the traverse direction is the arrow A1 direction or the arrow A2 direction shown in FIG. 1 (step ST31 shown in FIG. 4).
In step ST31, when the traverse direction is the A2 direction shown in FIG. 1, the sensor detection determination means 42 determines whether or not the gold wire 2 is detected in the order of the fiber sensors 31f and 31g (FIG. 4). Step ST32). That is, it is determined whether the gold wire 2 has passed over the fiber sensors 31f and 31g in this order by moving the feeding position.

In step ST32, when it is determined that the sensor detection determination means 42 has detected the gold wire 2 in the order of the fiber sensors 31f and 31g, the traverse reversing means 45 determines the traverse speed of the bobbin 3 by the feeding traverse motor 12. Decelerate (step ST33 shown in FIG. 4) and return to step ST31.
In step ST32, if the sensor detection determination means 42 does not determine that the gold wire 2 has passed in the order of the fiber sensors 31f and 31g, has the sensor detection determination means 42 detected the gold wire 2 with the fiber sensor 31h? It is determined whether or not (step ST34 shown in FIG. 4).

In step ST34, when the sensor detection discriminating means 42 discriminates that the gold wire 2 has passed through the fiber sensor 31h, the traverse direction is reversed in the direction of the arrow A1 shown in FIG. 1 and accelerated (step ST35 shown in FIG. 4). ). Then, the process returns to step ST31. In addition, it is not necessary to accelerate after inversion.
In step ST34, if the sensor detection determination means 42 does not determine that the gold wire 2 has passed through the fiber sensor 31h, whether the sensor detection determination means 42 has detected the gold wire 2 in the order of the fiber sensors 31b and 31c. Is determined (step ST36 shown in FIG. 4). That is, it is determined whether the gold wire 2 has passed over the fiber sensors 31b and 31c in this order by moving the feeding position.

In step ST36, when it is determined that the sensor detection determination means 42 has detected the gold wire 2 in the order of the fiber sensors 31b and 31c, the traverse reversing means 45 determines the traverse speed of the bobbin 3 by the feeding traverse motor 12. Accelerate (step ST37 shown in FIG. 4) and return to step ST31.
In step ST36, if the sensor detection determination means 42 does not determine that the gold wire 2 has passed in the order of the fiber sensors 31b and 31c, has the sensor detection determination means 42 detected the gold wire 2 with the fiber sensor 31d? It is determined whether or not (step ST38 shown in FIG. 4).

In step ST38, when it is determined that the sensor detection determination means 42 has detected the gold wire 2 by the fiber sensor 31d, the traverse reversing means 45 accelerates the traverse speed of the bobbin 3 by the feeding traverse motor 12 (shown in FIG. 4). Step ST39). Then, the process returns to step ST31.
In step ST38, when the sensor detection discriminating means 42 does not discriminate that the gold wire 2 has passed by the fiber sensor 31d, the gold wire 2 is fed and wound while maintaining the traverse speed. Then, it is determined whether the winding of the gold wire 2 by the spool 4 has been completed (step ST40 shown in FIG. 4).

  In step ST40, when the spool 4 has not finished winding, the process returns to step ST31 and the wire 2 is fed and wound while maintaining the traverse direction of the bobbin 3. When the spool 4 has finished winding, the process ends.

On the other hand, if the traverse direction is the A1 direction shown in FIG. 1 in step ST31, whether or not the sensor detection discriminating means 42 has detected the gold wire 2 in the order of the fiber sensors 31b and 31c as described above. Is determined (step ST41 shown in FIG. 4).
In step ST41, when it is determined that the sensor detection determination means 42 has detected the gold wire 2 in the order of the fiber sensors 31b and 31c, the traverse speed is reduced (step ST42 shown in FIG. 4), and step ST31. Return to.
If not determined in step ST41, it is determined whether or not the sensor detection determination means 42 has detected the gold wire 2 by the fiber sensor 31d (step ST43 shown in FIG. 4).

In step ST43, when the sensor detection discriminating means 42 discriminates that the gold wire 2 has passed through the fiber sensor 31d, the traverse direction is reversed to the arrow A2 direction shown in FIG. 1 and accelerated (step ST46 shown in FIG. 4). ). Then, the process returns to step ST31. In addition, it is not necessary to accelerate after inversion.
Further, if not determined in step ST43, it is determined whether or not the sensor detection determination means 42 has detected the gold wire 2 in the order of the fiber sensors 31f and 31g (step ST45 shown in FIG. 4).

In step ST45, when it is determined that the sensor detection determination means 42 has detected the gold wire 2 in the order of the fiber sensors 31f and 31g, the traverse speed is accelerated (step ST46 shown in FIG. 4). Return.
Further, when the determination is not made in step ST45, it is determined whether or not the sensor detection determination means 42 has detected the gold wire 2 by the fiber sensor 31h (step ST47 shown in FIG. 4).

In step ST47, when it is determined that the sensor detection determination means 42 has detected the gold wire 2 by the fiber sensor 31h, the traverse reversing means 45 accelerates the traverse speed of the bobbin 3 by the feeding traverse motor 12 (shown in FIG. 4). Step ST48), returning to step ST31.
On the other hand, if not determined in step ST38, the process proceeds to step ST40.

The winding process ST3 is performed as described above. Then, the spool 4 that has finished winding the gold wire 2 is removed from the spool holder 16, and the spool 4 that newly winds the gold wire 2 is attached to the spool holder 16. In addition, when a sufficient amount of gold wire 2 that can be completely wound by the spool 4 is not wound around the bobbin 3, a new bobbin 3 is mounted on the output shaft of the feeding motor 11.
In the winding process ST3, the winding control means 46 appropriately adjusts the rotational speed of the spool 4 by the winding motor 15 and the traverse direction and traverse speed of the spool 4 by the winding traverse motor 17. Thereby, the gold wire 2 is wound around the spool 4 so as not to adhere to each other in the axial direction, and the gold wire 2 from the bobbin 3 is wound around the spool 4 with a predetermined tension and a predetermined length.
In steps ST36 and ST41, it is determined that the gold wire 2 is detected in the order of the fiber sensors 31b and 31c. However, the order of the fiber sensors 31b and 31d may be used. It may be in order. Similarly, in steps ST32 and ST45, it is determined that the gold wire 2 is detected in the order of the fiber sensors 31f and 31g. However, the order may be the order of the fiber sensors 31f and 31h. , 31h.

  According to such a thin wire winding method and the thin wire winding device 1, the feeding position is appropriately reversed by the feeding traverse motor 12 and the traverse reversing means 45 so that the feeding position with respect to one point on the winding path is within a predetermined threshold. By doing so, the gold wire 2 is fed straight from the feeding position to the sheave 6a. As a result, the load on the gold wire 2 fed from the bobbin 3 to the sheave 6a is reduced. Accordingly, the wire 4 can be wound up by the spool 4 so that the wire wrinkles are suppressed and the straightness is good.

In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, in the above embodiment, a gold wire is used as the thin wire, but an iron wire, a tungsten wire, an aluminum wire, a copper wire, a chromium wire, a nickel wire, a noble metal wire (silver wire, platinum wire, palladium wire), an alloy wire, or the like. (For example, gold-palladium wire, gold-silver wire, gold-platinum wire, 18 gold wire, hard steel wire, piano wire, stainless steel wire) and other materials (metal, inorganic, organic matter, etc.) to these metal wires It may be a fine wire coated with a metal. Furthermore, it is not limited to a thin metal wire, and may be an inorganic material that is not a metal, such as an optical fiber cable, or a thin wire composed of an inorganic material.
Further, one point on the winding path may be another point such as a winding position by the winding body or a position reaching the other sheave.
Further, the rotation axis of the feeding body and the rotation axis of the winding body are arranged so as to be parallel to each other, but for example, the extension axes of the rotation axes may be arranged to be orthogonal to each other, and at other angles. You may arrange | position so that it may cross | intersect.
Further, although an absolute linear encoder that represents position information by a code such as a binary code is used, an incremental linear encoder that represents position information by a pulse number such as a single-phase pulse signal may be used. . Further, a rotary encoder may be provided in the feeding traverse motor, and the feeding position in the initial process may be adjusted based on the output of the rotary encoder.
Moreover, although the fiber sensor is provided in eight places on a base, what is necessary is just the structure by which the fiber sensor was provided in at least two places. Here, the gold wire passing direction is determined by determining the order in which the gold wires are detected using the two fiber sensors, but the gold wire passing direction can be determined simultaneously with the detection of the gold wire. A fiber sensor may be used.

Further, in the initial step, the relative position information between the bobbin and the base may be acquired by the linear encoder by moving the base in the arrow A1 direction or the A2 direction shown in FIG.
Further, in the initial step, the feeding position of the gold wire from the feeding body may be visually confirmed, and the feeding position may be adjusted by manually moving the feeding body.
In addition, the unwinding direction determining step may be omitted by setting the traverse direction in advance to either the arrow A1 direction or the A2 direction shown in FIG. 1 after the initial step. At this time, even if the unwinding direction due to the feeding of the gold wire and the traverse direction of the feeding body coincide with each other, the feeding position of the gold wire from the feeding body can be within a predetermined range in the subsequent winding step. .
In the winding process, the traverse reversing means determines that the feeding position of the gold wire is out of the predetermined range and reverses the traversing direction of the feeding body, but the traverse direction of the feeding body is controlled by the control unit. It is good also as a structure which does not reverse. That is, a display means for displaying when the traverse reversing means determines that the feeding position is located outside the predetermined range, and a reversing switch for reversing the traverse direction of the feeding body are provided. The configuration. Then, when the operator confirms that the feeding position is out of the range, the operator reverses the traverse direction of the feeding body using the reversing switch. Even in the manner described above, stable winding of the gold wire can be performed as described above.

It is a top view which shows the thin wire winding apparatus in one Embodiment of this invention. It is a front view of FIG. It is a flowchart which shows the thin wire winding method in one Embodiment of this invention. It is a flowchart which shows the winding process of FIG.

Explanation of symbols

1 Fine wire winding device 2 Gold wire (fine wire)
3 Bobbins (Federation)
4 Spool (winding body)
6a, 6b Sheave (guide roller)
7 Feeding position detection means 12 Feeding traverse motor (feeding body moving means)
31a-31h Fiber sensor (thin wire detection means)
45 Traverse reversing means (moving direction changing means)

Claims (6)

In the thin wire winding method of winding the thin wire drawn out from the feeding body wound with the thin wire with a winding body,
Detecting a change in the feeding position with respect to one point on a winding path connecting the feeding position by the feeding body and the winding position by the winding body;
When the change exceeds a predetermined threshold value, the fine wire is wound with the winding body while moving the feeding body so that the feeding position with respect to the one point is within the threshold value. Winding method. The feeding body is reciprocally movable in the direction of the rotation axis of the feeding body,
The thin wire winding method according to claim 1, wherein when the change exceeds the threshold value, the moving direction of the feeding body is reversed. Detecting the moving direction of the feeding position by feeding out the thin line from the feeding body in a state where the movement of the feeding body is stopped;
The thin wire winding method according to claim 1, further comprising a winding direction determining step of moving the feeding body in a direction opposite to a moving direction of the feeding position. A feed body on which a thin wire is wound, and a winding body that winds the thin wire,
In the thin wire winding device for winding the thin wire fed out from the feeding body with the winding body,
A feeding body moving means for moving the feeding body with respect to one point on a winding path connecting the feeding position by the feeding body and the winding position by the winding body;
A feeding position detecting means for detecting the feeding position with respect to the one point;
Discriminating means for discriminating that the feeding position detected by the feeding position detecting means exceeds a predetermined threshold with respect to the one point;
A thin wire winding device comprising: a moving direction changing means for changing a moving direction by the feeding body moving means. The feeding body moving means reciprocates the feeding body in the direction of the rotation axis of the feeding body,
The thin wire winding device according to claim 4, wherein the moving direction changing means reverses the moving direction of the feeding body. The thin wire winding device according to claim 4 or 5, wherein the feeding position detecting means includes a plurality of thin wire detecting means arranged so as to intersect the winding path.

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