JP2000068146A - Coil and peeling device for coil insulating cover film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal for a medium tap and not to require a work for binding for the tap by peeling a wiring part which is wound by running on a coil brim and by forming as an electric connecting part. SOLUTION: A coil bobbin 30 which is coaxially equipped with a spindle 4 is provided with plural brim parts 31. A ditch for binding a wire along the outer peripheral of each brim part 31 is provided and the wire having a predetermined turn number is wound on the ditch. After that, a terminal of a horn member 42 is transferred to the position of contacting with the wire wound on the outer periphery of the brim parts 31. A part of an insulating cover film where the wire is wound on the outer periphery of the wire brim parts 31 is peeled by an oscillation having a frequency of an ultrasound region of the horn member 42 by an ultrasound oscillation device 41. Additionally, a part of peeled wire is used as a medium tap by connecting with a lead wire, electronic elements or electrode parts on a substrate by soldering and so on. By the means an efficiency of coil manufacturing is significantly improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a peeling device provided in a winding device for peeling off an insulating film at a predetermined position on a wire.

[0002]

2. Description of the Related Art In a winding apparatus for manufacturing a coil by winding a wire on a coil bobbin, an end of the coil is wrapped around a terminal of the coil bobbin after a wire insulating coating is peeled off. The coil is electrically connected at this terminal.

[0003] In such a stripping operation of the wire insulating film,
Conventionally, a mechanical method of shaving an insulating film with a file or a cutter, a method of melting the insulating film by heating with a heater or a laser, a chemical method of removing the insulating film with a solvent, and the like have been used.

[0004]

However, such conventional methods for stripping a wire insulating film have the following problems.

First, it is difficult to adjust the pressure applied to a file or a cutter by a mechanical peeling method using a file or a cutter. For this reason, when the pressure is too strong, the peeling work is performed too deeply, and the wire is easily broken.
Conversely, when the pressure is too weak, the insulating coating may not be sufficiently peeled off. Also, the pressure applied to the file or cutter needs to be changed according to the diameter of the wire,
It was troublesome.

Further, in the peeling method by heating, if a heater is used, the heater is likely to be disconnected, requiring time and cost for replacement. In addition, it is necessary to remove the resin of the insulating coating on the heater surface. If it is removed afterwards, the maintenance will take too much time. On the other hand, if a laser is used, the laser device is expensive and costly.

In addition, the chemical stripping method requires complicated operations such as ensuring the safety of handling the solvent and preventing corrosion of the stripped portion due to a chemical change. Would.

Further, the problem of the inefficiency of the stripping operation is particularly remarkable in winding a section-wound bobbin (bobbin for a multiple inductor) as shown in FIG.

More specifically, in the section-wound bobbin, the coil bobbin 100 has a plurality (4 in FIG. 9).
) Are provided with a terminal 102 for an intermediate tap. Then, the wire rod 104 fed from the nozzle 103
Is wound around the outer periphery of the coil bobbin 100 while sequentially shifting its position in the axial direction.
Terminal 1
02 For this reason, in the section-wound bobbin, the work of peeling and tying the wire is required at a plurality of portions, which causes a reduction in workability.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a coil and a coil insulating film peeling apparatus capable of performing a peeling operation easily and at low cost.

[0011]

According to a first aspect of the present invention, a plurality of flanges are provided on the outer periphery of a coil, and a wire is wound around the flanges by a predetermined number of turns. The electrical connection was formed by peeling off the insulating coating.

In the second invention, a plurality of flanges are provided on the outer periphery of the coil bobbin, and the wire is wound around the flanges by a predetermined number of turns, and the insulating film of the wire wound around the flanges is peeled off. An apparatus for stripping an insulating film of a coil having an electrical connection portion, comprising: a vibration generating means for generating vibration at a frequency in an ultrasonic range; a vibration member to which vibration is applied from the vibration generating means; And a contact portion that is formed on the flange portion and is capable of contacting the wire portion wound around the flange portion. The insulating film of the wire portion wound around the flange portion is peeled off by the vibration of the vibration member.

According to a third aspect of the present invention, there is provided a three-dimensional moving means for moving the vibrating member in a three-dimensional direction.

[0014]

According to the first invention, the terminal for the intermediate tap is not provided by forming the electrical connection by peeling off the wire portion wound on the flange portion of the coil and forming the electrical connection portion. A coil having a plurality of electrical connections for the intermediate tap can be configured without the necessity of the work of bending the terminal, so that the efficiency of coil production is significantly improved,
Also, the manufacturing cost is significantly reduced.

In the second aspect of the present invention, the wire portion wound around the flange of the coil is peeled off by bringing the wire portion into contact with the contact portion of the vibrating member that vibrates ultrasonically.
The stripping operation can be performed extremely easily, the efficiency of coil production is significantly improved, and the production cost is also significantly reduced.

In the third aspect of the present invention, since the vibrating member can be moved by the three-dimensional moving means, the vibrating member can be successively moved to the flange portion of the coil where the peeling operation is to be performed. It can be performed.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a winding device 1 which serves as a reference for understanding an embodiment of the present invention. Before describing the embodiment of the present invention, the winding device 1 will be described.

As shown in FIG.
The spindle support 3 installed on the base 2 is provided with a plurality of spindles 4 (only two spindles 4 are shown in FIG. 1). These spindles 4 are driven to rotate around their axes. By this rotation, the coil bobbins 5 coaxially mounted on the respective spindles 4 rotate, and the wire 6 is wound around the outer periphery of the coil bobbins 5. ing.

A rail 13 extending in the left-right direction is fixed on the upper part of the spindle support 3. This rail 13
A peeling device support 14 is provided on the upper side, and is movable along the rail 13 by driving a cylinder (actuator) 15. The peeling device support table 14 is provided with a peeling device 20.

The same number of wires 6 as the spindles 4 are fed out from a wire source (not shown), are given a predetermined tension by a tension device 7, and are then provided with pulleys 8 provided on the base 2 via a relay member. Peeling device 2
After passing through 0, it is guided to the nozzle 9. The peeling device 20 will be described later in detail.

The same number of nozzles 9 as the spindles 4 and the wires 6 are mounted on a nozzle support shaft 10 extending in the horizontal direction, and are arranged substantially above each spindle 4. The nozzle support shaft 10 is supported on a support pillar 11 that is vertically expandable and contractable and movable in the front-rear and left-right directions. Thereby, the nozzle 9
Is movable in a three-dimensional direction together with the expansion and contraction and longitudinal movement of the nozzle support shaft 10 and the lateral movement of the nozzle support shaft 10.

The tip of the wire 6 fed from the nozzle 9 is hanged on a discarding pin 12 in front of the spindle 4. In this state, the nozzle 6 is moved in a three-dimensional direction so that the wire 6 5A. After the predetermined portion of the wire 6 (the winding start end of the coil) is wrapped around the terminal 5A, the nozzle 9 is moved in the axial direction (front-back direction) of the spindle 4 while rotating the spindle 4.
, The wire 6 is wound around the coil bobbin 5 in an aligned state. After the completion of the winding on the coil bobbin 5, the winding end end is wrapped around the terminal 5A different from the winding start end.

The stripping device 20 is a device for stripping the insulating film from the portion of the wire 6 wrapped around the terminal 5A in this manner. As shown in FIG. 2, the wire 6 penetrates through the hollow portion on the central axis. A cylindrical ultrasonic vibration device 21 is provided. A sufficient size is ensured in a hollow portion of the ultrasonic vibration device 21 so that the ultrasonic vibration device 21 does not touch the wire 6 even when the ultrasonic vibration device 21 vibrates.

On the side of the ultrasonic vibration device 21, there is formed a clearance groove 24 for cutting the ultrasonic vibration device 21 in the vertical direction. Thus, when the peeling device support 14 is moved by driving the cylinder 15, the wire 6 housed in the hollow portion of the ultrasonic vibration device 21 comes out of the escape groove 24, and the peeling device 20 is moved from above the nozzle 9. It can be retracted, and when the peeling operation is not performed (for example, during the winding operation on the coil bobbin 5), the contact portions 23A, 23
Interference between B and the wire 6 can be reliably prevented.

Below the ultrasonic vibration device 21, a pair of horn members 22A and 22B are provided. These horn members 22A and 22B extend from a common root portion attached to the lower end surface of the ultrasonic vibration device 21 so as to sandwich the wire 6 hanging from the ultrasonic vibration device 21 from both left and right sides. . Further, these horn members 22
The tips of A and 22B are claw-shaped contact portions 23A and 23B bent toward the wire 6 side, respectively.
It is in contact with the wire 6.

The ultrasonic vibration device 21 is provided with a horn member 22A, a horn member 22A, an ultrasonic oscillator (not shown) provided therein.
The vibration of the frequency in the ultrasonic range is applied to 2B. Due to this vibration, the contact portions 23A and 23B peel off the insulating coating on the outer periphery of the wire 6. Here, the horn members 22A and 22B amplify the amplitude of the vibration from the ultrasonic vibration device 21 at a predetermined ratio and transmit the amplified amplitude to the contact portions 23A and 23B.

As described above, the pair of horn members 22A, 22A
By peeling the wire 6 from both sides using 2B, a wide range of peeling work can be efficiently performed.

Further, by rotating the coil bobbin 5 (spindle 4) at an appropriate angle while winding the wire 6 for a predetermined length while vibrating the horn members 22A and 22B, the wire 6 can be wound over the width of the predetermined length. Can be peeled.

The lengths of the left and right horn members 22A and 22B are slightly different, and the contact portions 23A and 23B
Are in contact with the wire 6 when they are displaced from each other. Accordingly, the vibrations of the contact portions 23A and 23B can be appropriately separated from both sides without interfering with each other. The displacement of the contact portions 23A and 23B is set to a minimum necessary so that a large displacement does not occur at the peeling positions on both sides of the wire 6.

In this embodiment, the horn member 22
A and 22B are integrated at the root and vibrate integrally. However, the present invention is not limited to such a form, and the horn members 22A and 22B are configured as left and right separate bodies, It may be possible to vibrate in a different manner.

Although the peeling device 20 is provided above and separated from the nozzle 9, it may be formed integrally with the nozzle 9.

Next, the operation will be described.

In the winding device, the wire 6 fed from the wire source is guided to the peeling device 20 via the tension device 7 and the pulley 8, where the wire 6 is moved to a predetermined position (for example, the winding start end of the coil and the winding start end). At the position corresponding to the winding end), the insulating coating on the outer periphery is peeled off. The wire 6 after the stripping operation is guided from the nozzle 9 to the coil bobbin 5 and wound around the coil bobbin 5.

In this case, in the peeling device 20 of the present invention, the wire 6 is formed by the horn member 22 vibrating at a frequency in the ultrasonic range.
At the portions of the tips A and 22B that come into contact with the contact portions 23A and 23B, the insulating film is peeled off by being locally heated, and at the same time, the peeled insulating film is dropped and removed by the fine vibration of the contact portions 23A and 23B. You. Such a stripping operation is performed simultaneously with the winding of the wire 6 around the coil bobbin 5, and the wire 6 is stripped over a width corresponding to the winding length.

As described above, according to the present invention, since the stripping operation of the wire 6 is performed by the ultrasonic vibration of the contact portions 23A and 23B, the vibration of the contact portions 23A and 23B is not only reduced with the tension applied by the tension device 7. By changing the frequency and amplitude, the amount of peeling can be freely adjusted, and an appropriate peeling operation can always be performed. Further, even if the diameter of the wire 6 changes, it can be easily handled.

Further, since the contact portions 23A and 23B can be configured to be small and can be accurately applied only to the position to be peeled, the positional accuracy of the peeling operation is high. Therefore, in conjunction with the control of the winding amount of the wire 6 on the coil bobbin 5, the wire 6 can be peeled at an accurate position and with an accurate width, and can easily cope with, for example, a slight width. it can.

The heated portion of the wire 6 is the contact portion 2
Since it is limited to a narrow range in contact with 3A and 23B, there is no adverse effect on other portions of the wire 6.

Since the heating by the contact portions 23A and 23B is temporary and is not always in a heating state, maintenance work such as removal of the insulating film adhered to the contact portions 23A and 23B can be performed very easily. In addition, since the peeling device 20 is always kept clean, the winding operation can be performed in a favorable working environment.

The peeling device 20 including the ultrasonic vibration device 21 and the horn members 22A and 22B is inexpensive.
The size can be reduced. Therefore, cost reduction and space saving of the peeling device 20 can be achieved.

FIGS. 3 to 5 show a winding device 1 having a form different from that of FIG. 1, which is a reference for understanding the embodiment of the present invention.

The winding apparatus 1 has a substantially common basic configuration as compared with the winding apparatus 1 of the first embodiment shown in FIG. Is different. That is, in the winding device 1 of the present embodiment, the wire 6
Is guided from the tension device 7 and the pulley 8 to the nozzle 9 via the peeling device 50, and is wound around the outer periphery of the coil bobbin 5 supported by the spindle 4.

The peeling device 50 includes a rotating member 51 through which the wire 6 guided from the pulley 8 penetrates. Rotating member 5
1 is a support portion 5 extending horizontally from the peeling device support base 15.
2 and is rotatably supported, connected to a drive motor 53 via a belt 54, and driven to rotate.

The peeling device support 15 is provided with a vibration generator 70. The vibration generator 70 includes an ultrasonic vibration member 71 that can vibrate at a frequency in the ultrasonic range. An opening 72 having a threaded groove formed in the inner peripheral surface is formed at a tip end of the ultrasonic vibration member 71 extending below the rotating member 51. The wire 6 that has passed through the rotating member 51 is inserted into the opening 72 and is further guided to the nozzle 9. In addition, as described later, the inner peripheral surface of the opening 72 (the surface on which the thread-shaped groove is cut) serves as a contact portion with the wire 6.

As shown in FIG. 4, a disk member 56 is accommodated in the hollow portion of the rotating member 51. An eccentric hole 57 is formed at a position eccentric from the center of the disk member 56, and the wire 6 is inserted through the eccentric hole 57.

A pair of pins 58A, 58B penetrating the disk member 56 from the back surface to the surface is fixed to the disk member 56 on both sides of the center and the eccentric hole 57. Further, guide grooves 59A and 59B are formed in the hollow portion of the rotating member 51 so as to be located above the disk member 56.
The guide grooves 60A and 60B are respectively formed so as to be located below the guide grooves 59A and 59B.
0A, 60B. Thereby, the disk member 56
Are guided and moved in a direction along these guide grooves (a direction orthogonal to the rotation axis of the rotating member).

A spring 61 is accommodated in the hollow portion of the rotating member 51, and the disk member 56 is inserted into the guide grooves 59A and 60A.
It is urged to the A side. Thus, when the rotating member 51 is not rotating, the eccentric hole 57 of the disk member 56 is located exactly on the rotation axis of the rotating member 51, and the wire 6 is straight toward the opening 72 of the ultrasonic vibration member 71. Is to be drooped.

On the other hand, as shown in FIG. 5, when the rotating member 51 rotates, the disk member 56 rotates together with the rotating member 51. The disk member 56 has a spring 61 so that its center is located on the rotation axis of the rotating member 51. Move against. As a result, the eccentric hole 57 deviates from the rotation axis of the rotation member 51 and revolves around the rotation axis. As a result, the wire 6 going from the eccentric hole 57 to the opening 55a revolves around the rotation axis in a state of being inclined obliquely, and the outer circumference of the wire 6 contacts the inner circumferential surface of the ultrasonic vibration member opening 72 over the entire circumference. To go. in this case,
Since the ultrasonic vibration member 72 vibrates at a frequency in the ultrasonic range, the insulating film on the outer periphery of the wire 6 is automatically peeled off over the entire periphery by the groove on the inner periphery of the opening 72.

The ultrasonic vibration member 71 may be configured to be movable in order to avoid interference between the wire 6 and the ultrasonic vibration member 71 during the winding operation. In this case, a part of the opening 72 of the ultrasonic vibration member 17 is cut off,
Can be opened and closed, or the like, so that the wire 6 escapes outside the opening 72.

FIGS. 6 to 8 show an embodiment of the present invention.

This peeling device is applied to a winding device of a section winding bobbin (bobbin for a multiple inductor), and includes a movable ultrasonic vibration device 41 as shown in FIG. The overall configuration of the winding device 1 is, for example, the same as that of the winding device 1 of FIG. 1. Instead of removing the peeling device 20 from the winding device 1, the winding device 1 is provided with the peeling device of the present embodiment. do it.

As shown in FIG. 6, the coil bobbin 30 coaxially mounted on the spindle 4 has a plurality of (four in the present embodiment) flange portions 31. A groove around which the wire 6 is wound is provided along the outer periphery of each flange 31. A predetermined turn (two turns in the present embodiment) of the wire 6 is wound along the groove. That is, when the nozzle 9 moves in the axial direction of the spindle 4 with the rotation of the spindle 4, the wire 6 is aligned and wound on the coil bobbin 30 from the distal end side to the base end side. When getting over, the wire 6 is wound around the outer circumference of the flange 31 by a predetermined number of turns,
It is to be wound to the point where it got over.

The peeling device of the present embodiment performs the peeling work on the wire rod wound around the outer periphery of the flange 31 in this manner.

More specifically, as shown in FIGS. 7 and 8, the peeling device of the present embodiment includes an ultrasonic vibration device 41, and a rod-shaped horn member 42 attached to the ultrasonic vibration device 41. In addition, it is possible to apply vibration having a frequency in the ultrasonic range. The ultrasonic vibration device 41 is movable in a three-dimensional direction by a moving mechanism (not shown) (for example, a three-dimensional moving mechanism similar to the moving mechanism of the nozzle 9 in FIG. 1 or a robot hand).

With such a configuration, in the peeling apparatus of the present embodiment, after the winding of the wire 6 around the coil bobbin 30 is completed, the wire having the tip of the horn member 42 wound around the outer periphery of the flange 31 It is moved to the position where it comes into contact with. And the horn member 42 by the ultrasonic vibration device 41
Vibration at a frequency in the ultrasonic range causes the flange 3 of the wire 6
(1) The portion of the insulating film wound around the outer periphery is peeled off. The wire part thus peeled is a lead wire, an electronic element,
Alternatively, it is used as an intermediate tap by being connected to an electrode portion on a substrate by soldering or the like.

As described above, according to the present invention, the terminal for the intermediate tap is not required on the coil bobbin 30. Therefore, the work for connecting the terminal to the terminal is not required, and the work for peeling the wire 6 for forming the intermediate tap is also unnecessary. It can be done very easily and accurately. Therefore, the efficiency of coil production can be significantly improved, and the production cost can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a winding device that serves as a reference for understanding the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a side view of another embodiment of a winding device that is helpful for understanding the present invention.

FIG. 4 is a cross-sectional view showing a peeling device.

FIG. 5 is a sectional view showing a peeling device.

FIG. 6 is a perspective view of a coil bobbin according to the embodiment of the present invention.

FIG. 7 is a perspective view of a coil bobbin and a mobile ultrasonic vibration device.

FIG. 8 is a sectional view of the same.

FIG. 9 is a perspective view showing a conventional section winding bobbin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Winding device 3 Spindle support 4 Spindle 5 Coil bobbin 6 Wire 7 Tension device 9 Nozzle 13 Rail 14 Peeling device support 15 Cylinder 20 Peeling device 21 Ultrasonic vibration device 22A Horn member 22B Horn member 23A Contact part 23B Contact part 24 Escape Groove 30 Coil bobbin 31 Flange 41 Ultrasonic vibration device 42 Horn member 50 Peeling device 51 Rotating member 53 Drive motor 56 Disk member 57 Eccentric hole 70 Vibration generator 71 Ultrasonic vibration member 72 Opening

Claims (3)

[Claims] A coil bobbin is provided with a plurality of flanges on the outer periphery thereof, and a wire is wound around the flange for a predetermined number of turns, and an insulating coating on a wire portion wound around the flange is peeled off to form an electrical connection portion. A coil characterized in that a coil is formed. 2. A coil bobbin is provided with a plurality of flanges on the outer periphery thereof, and a wire is wound around the flanges by a predetermined number of turns, and an insulating coating of the wire wound around the flanges is peeled off to form an electrical connection portion. A vibration generating means for generating vibrations of a frequency in an ultrasonic range, a vibration member to which vibration is applied from the vibration generation means, and a vibration member formed on the vibration member. A contact portion capable of contacting a wire portion wound around the flange portion, wherein the insulating film of the wire portion wound around the flange portion is peeled off by vibration of the vibrating member. Peeling device. 3. A method for moving said vibrating member in a three-dimensional direction.
The coil insulating film peeling device according to claim 2, further comprising a dimension moving means.