JPH11297560A - Coil manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and method for manufacturing a coil by which electrical connection of a wire to coil bobbin terminals can be performed with accuracy without soldering. SOLUTION: A wire welding unit 10 comprising an electrode unit 11, an electrode transferring mechanism 12 and a power supply 17 is disposed on the side of a coil bobbin 1 coaxially supported at the end of a spindle 2. After finishing the operations of winding and binding of the wire to bobbin terminals 1A and 1B, the wire welding unit 10 is transferred near the coil bobbin 1 by the electrode transferring mechanism 12. The terminals 1A and 1B on which a wire 5 is bound are sandwiched between electrodes 14A and 14B of the electrode unit 11, and a specified voltage is applied between the electrodes 14A and 14B by the power supply 17. In this way, first an insulating coating of the wire 5 is melted by energization via a lead 16 connecting the electrodes 14A to 14B. Then the wire 5 is welded and electrically connected with the terminals 1A and 1B by the energization via the wire 5 after melting its insulating coating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil manufacturing apparatus and a coil manufacturing method, and more particularly, to an improvement that allows a work of connecting a wire to terminals of a bobbin to be performed efficiently.

[0002]

2. Description of the Related Art In the manufacture of a coil, a wire covered with an insulating film is wound around the outer periphery of a coil bobbin by a winding device, and a part of the wire from which the insulating film has been peeled is tangled to a bobbin terminal. An operation of connecting the wire and the bobbin terminal in a conductive state is performed. Conventionally, the connection of the wire to the bobbin terminal has been performed while the insulating coating on the outer periphery of the wire is burned off by soldering.

[0003]

However, if such a soldering step is performed as post-processing after winding, an operator removes the coil bobbin from the winding device for soldering, and removes the coil bobbin from the soldering device. Work such as mounting on a cradle is required, which is inefficient.

In order to integrate the soldering process into a coil manufacturing line in order to automate the soldering process, a soldering unit is required separately from the winding device. Further, the coil bobbin is carried to a solder bath of the soldering unit. For example, a mechanism for immersing the coil bobbin (for example, a mechanism for moving a spindle supporting the coil bobbin) is required, resulting in an increase in the size of the apparatus and an increase in cost.

[0005] Further, by such a soldering operation,
If the flux adheres to the wire, the wire may corrode due to a change with time, which may cause a problem such as disconnection.

Further, if the solder balls generated during the soldering operation adhere to the coil bobbin, the characteristics of the coil may be deteriorated (for example, withstand voltage characteristics or short circuit), or the solder ball may be damaged when the coil is mounted on the substrate. To cause a defect.

Further, when the wire entangled with the coil bobbin terminal is immersed in a solder bath, the wire insulating coating made of, for example, a thermoplastic resin is rapidly heated. As a result, the insulating coating is carbonized and adheres to the coil. If it does, it will cause a characteristic failure of the coil.

The present invention has been made in view of such a problem. In a coil manufacturing apparatus and a coil manufacturing method, an electric connection of a wire to a coil bobbin terminal is efficiently performed without using soldering. The purpose is to provide what you get.

[0009]

According to a first aspect of the present invention, there are provided a winding means for winding a wire having an insulating coating around a winding frame, and a winding means for winding the wire around a terminal provided on the winding frame. In the coil manufacturing apparatus provided, a pair of electrodes capable of contacting a wire entangled with the terminal so as to sandwich the terminal, moving means for moving at least one of the pair of electrodes or the winding frame, and the pair of electrodes. A voltage applying means for applying a voltage between the electrodes, and a conducting wire for electrically connecting these electrodes, wherein the voltage is applied by the voltage applying means, and the insulation is generated by the heat generated by the electrodes due to the conduction through the conducting wire. The coating is melted, and the wire is welded to the terminal by heat generated by energization through the wire after the insulating coating is melted.

According to a second aspect of the present invention, there is provided a coil manufacturing method for performing a winding operation of winding a wire having an insulating film around a winding frame and performing a winding operation of winding a wire around a terminal provided on the winding frame. After the completion of the winding operation and the tying operation, at least one of the pair of electrodes or the bobbin connected by a conductive wire is moved to dispose the pair of electrodes near the bobbin, and By sandwiching the terminal where the wire is entangled by the electrode, and by applying a voltage to a pair of electrodes sandwiching the terminal, the insulating coating is melted by heat generation of the electrode due to energization through the conducting wire, The wire is welded to the terminal by heat generated by energization through the wire after the insulation coating is melted.

[0011]

According to the coil manufacturing apparatus of the first invention and the coil manufacturing method of the second invention, the winding operation of the wire to the winding frame and the wire to the terminal by the winding means and the tying means. After the entanglement work is performed, at least one of the pair of electrodes or the winding frame is moved by the moving means so as to be arranged near each other, and the terminal to which the wire is entangled is sandwiched, and by the voltage applying means. A voltage is applied between the pair of electrodes. As a result, electricity is first supplied through the conductive wire and the insulating film is melted by the heat generated by the electrodes, and then the current is applied through the wire after the insulating film is melted. Is done. Therefore, the winding work, the tying work, and the electrical connection work of the terminal and the wire can be continuously and efficiently performed in one device, and the working time of coil manufacturing can be reduced, and the device can be downsized. Can be. Also, since the electrical connection between the terminal and the wire is performed by welding and no solder is used, there is no room for corrosion of the wire due to the flux or occurrence of defects due to the adhesion of the solder ball to the bobbin. Further, unlike the case where the wire insulating coating is immersed in a solder bath, the wire insulating coating does not carbonize. During the winding operation and the tying operation, the pair of electrodes are retracted from the periphery of the winding frame by the electrode moving means, so that the electrodes do not interfere with the winding operation and the tying operation.

[0012]

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

FIG. 1 shows a coil manufacturing apparatus according to a first embodiment of the present invention.

As shown in the drawing, a spindle 2 extending in the horizontal direction is provided substantially at the center of the winding device, and a coil bobbin 1 as a winding frame is coaxially supported at the tip of the spindle 2. The spindle 2 is rotationally driven around an axis by a rotation driving means (not shown).

A nozzle 4 supported by a nozzle moving mechanism 3 is provided beside the spindle 2. The nozzle moving mechanism 3 moves the nozzle 4 in a three-dimensional direction.
This movement is controlled by a controller (not shown).

A wire 5 fed from a wire source (not shown) is inserted into the nozzle 4. A predetermined tension is applied to the wire 5 by a tension applying device 6 just before the nozzle 4. Further, on the side of the coil bobbin 1, a discard binding pin 7 to which the wire 5 fed from the nozzle 4 is bound is provided upright.

A wire welding unit 10 is provided on the side of the coil bobbin 1 opposite to the nozzle 4.

The wire welding unit 10 comprises an electrode unit 11, an electrode moving mechanism 12 for moving the electrode unit 11 in a three-dimensional direction, and a power supply 17.

The electrode unit 11 has a pair of arms 13A and 13B extending downward and parallel. At the lower ends of these arms 13A, 13B, electrodes 14A, 1
4B and are connected to a power supply 17 via cords 15A and 15B, respectively. Thus, a voltage from the power supply 17 is applied between the electrodes 14A and 14B.

The electrode unit 11 includes an arm 13
Arm driving means for driving A and 13B so as to reduce the distance therebetween is provided. As shown in FIG. 2, the electrode moving mechanism 1
2 drive, terminal 1A (or 1B) of coil bobbin 1
The electrodes 14A and 14B disposed on both sides of the terminal 1A sandwich the terminal 1A or 1B from both sides by driving the arms 13A and 13B, and come into contact with the wire 5 entangled with the terminal 1A (or 1B). I have.

Further, as shown in FIG.
4B are connected to each other by a conductor 16. The electrical resistance of the conductive wire 16 is at least as large as the electrodes 14A, 14B.
The electric resistance is sufficiently larger than the electric resistance of the wire portion in which the insulating film is melted by being interposed between the terminals 1A (or 1B).

The electrode unit 11 is moved by the electrode moving mechanism 12 and the arm 13 is moved by the arm driving means.
The movement of A and 13B is controlled by a controller (not shown).

Next, a coil manufacturing method using the coil manufacturing apparatus shown in FIG. 1 will be described.

The end of the wire 5 fed from the nozzle 5 is entangled with a waste entanglement pin 7. In this state, when the nozzle 4 is moved by the nozzle moving mechanism 3 so as to rotate around the terminal 1A, the wire 5 fed from the nozzle 4 is entangled with the terminal 1A. After the tying work of the terminal 1A, the wire 5 between the disposal tying pin 7 and the terminal 1A is cut by a cutting mechanism (not shown).

Subsequently, the nozzle 4 is moved to a predetermined position on the outer peripheral side of the coil bobbin 1, and the spindle 3 is driven to rotate. Thereby, the wire 5 is wound around the outer periphery of the coil bobbin 1 which rotates around the axis together with the spindle 2. At this time, by moving the nozzle 4 in the axial direction of the coil bobbin 1, the wire 5 is aligned and wound around the outer periphery of the coil bobbin 1. In this winding operation, a predetermined tension is applied to the wire 5 by the tension applying device 6.

When the winding of the coil around the outer periphery of the coil bobbin 1 is completed, the nozzle 4 is moved so as to rotate around the terminal 1B, and the end of the coil is wound at the terminal 1B.
Get involved. The wire 5 before the terminal 1B is wound around the waste binding pin 7, and then cut by the cutting mechanism between the waste binding pin 7 and the terminal 1B.

When such a winding operation is completed, the electrode unit 11 which has been retracted from the periphery of the coil bobbin 1 by the driving of the electrode moving mechanism 12 so as not to hinder the winding and tying operation is moved to the coil bobbin 1 side. The electrode 14A, 14B at the tip of the arm 13A, 13B is moved to the electrode 1A.
Place on both sides of the. The terminal 1A is sandwiched between the electrodes 14A and 14B by the driving of the arm driving means.

In this state, the electrodes 14A, 14A
A predetermined voltage is applied between 14B. Then, initially, since the wire 5 sandwiched between the electrodes 14 </ b> A and 14 </ b> B has an insulating coating, current flows through the conductor 16.

When the electrodes 14A and 14B are heated by this energization, the insulating coating on the outer periphery of the wire 5 sandwiched between the electrodes 14A and 14B melts out, and the electrodes 14A and 14B and the wire 5 are melted.
Becomes conductive. As a result, a large amount of current flows between the electrodes 14A and 14B, which are almost short-circuited, even if there is only a slight wire 5 entangled with the terminal 1A. The wire 5 and the terminal 1A heated by this large current are welded to each other,
Connected in an electrically conductive state.

When the connection operation for the terminal 1A is completed in this way, the same connection operation is performed for the terminal 1B, and the coil is completed.

FIG. 3 shows a coil manufacturing apparatus according to a second embodiment of the present invention.

This coil manufacturing apparatus is used for manufacturing a deflection coil. A wire 21 is wound around a wrapper-shaped deflection yoke frame 20, which is a winding frame, and a plurality of terminals 20A provided on the deflection yoke frame 20 are provided. The wires 21 entangled with these are welded and connected by the wire welding unit 10.

More specifically, a wire 21 fed from a wire source (not shown) is guided to a wire supply mechanism 23 above the deflection yoke frame 20 after being given a predetermined tension by a tension applying device 22.

The wire rod supply mechanism 23 feeds out the wire rod 21 from a nozzle 19 attached to the lower end, and can be moved in a three-dimensional direction by a three-dimensional movement mechanism 24 including a plurality of motors and ball screws. ing.

The wire feed mechanism 23 is provided with a drive motor 2
5, and can rotate around the rotation shaft 23A. In this case, the nozzle 19
Is mounted at a position deviated from the rotation shaft 23A, so that when the wire rod supply mechanism 23 rotates, it revolves around the rotation shaft 23A and moves.

The deflecting yoke frame 20 is rotatably supported on the winding frame support 27 around an axis, and is driven to rotate by a motor 29 via a belt 28 wrapped around the outer periphery of the deflecting yoke frame 20.

The wire 21 fed from the nozzle 19 is wound around the deflection yoke frame 20 and tied to the terminal 20A by three-dimensional movement and rotation of the wire feed mechanism 23 and rotation of the deflection yoke frame 20 around the axis. This is performed by combining

The wire welding unit 10 includes the deflection yoke frame 2
0 is provided on the side.

The wire welding unit 10 includes an electrode unit 11 and an electrode moving mechanism 1 similarly to the first embodiment.
2 and a power supply 17, and connecting (welding) the wire 21 to each terminal 20A in the same procedure as in the first embodiment.
Is made.

That is, when the winding work to the deflection yoke frame 20 and the wire tying work to the terminal 20A are completed, the electrode unit 11 retracted from the periphery of the deflection yoke frame 20 so as not to interfere with the winding. The electrodes 14A and 14B are moved by the electrode moving mechanism 12, and one terminal 20A is arranged vertically. Furthermore, the arm 1
3A and 13B are driven, and the electrodes 14A and 14B
The terminal 20A to which the wire 21 is entangled is sandwiched from above and below.

In this state, the power supply 17 causes the electrodes 14A,
When a predetermined voltage is applied between the wires 21B and 14B, the insulating film around the wire 21 is first melted.
A large current flows to 0A, and the wire 21 and the terminal 20A are welded,
It is electrically connected to the conductive state.

Such a connecting operation is performed for all the terminals 20A to which the wire 21 is entangled, and the deflection coil is completed.

As described above, the coil manufacturing apparatus and the coil manufacturing method according to the present invention can be applied to an apparatus having any configuration as long as it is a coil manufacturing apparatus and a manufacturing method for electrically connecting a wire to a terminal.

According to the coil manufacturing apparatus and the coil manufacturing method of the present invention, the winding of the wire onto the bobbin (coil bobbin 1, deflection yoke frame 20) and the terminals of the bobbin (terminals 1A, 1B, 20A). The work of tying the wire to the wire and the work of electrically connecting the terminal and the wire (welding work) can be continuously and efficiently performed in one device. Therefore, the working time required for coil manufacturing can be reduced, and the size of the entire coil manufacturing apparatus can be reduced.

Further, since the work of connecting the terminal and the wire is performed by welding the terminal and the wire by energization, various problems that occur when the connection is performed by soldering do not occur. That is, since solder is not used for the connection work,
There is no room for the corrosion of the wire rod due to the flux or the occurrence of defects due to the adhesion of the solder balls to the bobbin. Further, unlike the case where the wire insulating coating is immersed in a solder bath, the wire insulating coating does not carbonize.

In each of the above embodiments, the pair of electrodes 14A and 14B are moved by the electrode moving mechanism 12 to the vicinity of the winding frame (the coil bobbin 1 or the deflection yoke frame 20). It is not limited to such a form. That is, for example, a three-dimensional moving mechanism is provided on the bobbin side, and by moving the bobbin, each terminal (terminal 1A, 1B, terminal 20A) of the bobbin is connected to a pair of electrodes 14A, 14B.
It is good also as a structure brought to the position pinched between.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is an explanatory view showing an electrode and a coil bobbin terminal.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coil bobbin (winding frame) 1A terminal 1B terminal 2 Spindle (winding means) 3 Nozzle moving mechanism (winding means, tying means) 4 Nozzle (winding means, tying means) 5 Wire rod 10 Wire welding unit 11 Electrode unit Reference Signs List 12 electrode moving means 14A electrode 14B electrode 16 conducting wire 17 power supply (voltage applying means) 20 deflection yoke frame (winding frame) 20A terminal 21 wire rod 23 wire feeding mechanism (winding means, tying means) 24 three-dimensional moving mechanism (winding Means, binding means) 28 Belt (winding means) 29 Motor (winding means)

[Procedure amendment]

[Submission date] April 5, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of the Invention] Coil manufacturing equipment

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

[0009]

According to the first invention, a coil is provided.
A spindle that rotatably supports the bobbin and an insulating coating
Nozzle that feeds the provided wire rod and this nozzle
Nozzle moving means for moving the nozzle in the direction
The wire unwound from the coil is coiled by the rotation of the spindle.
Wrap around the bobbin and
Of the nozzle by the nozzle moving means to the terminal provided at
In the coil manufacturing apparatus Karageru the wire in moving, substantially parallel
A pair of extending arms and attached to each end of these arms
The pair of electrodes and the pair of arms are spaced apart from each other.
Arm driving means that can be driven to be narrowed,
A pair of arms and electrodes and the arm driving means
Unit, and move this electrode unit in the three-dimensional direction.
The electrode unit, the electrode moving means, and the power supply for applying a voltage between the pair of electrodes; and a conductor for electrically connecting the electrodes.
Constitutes a wire rod welding unit, and this wire welding unit
To the side of the coil bobbin supported by the spindle
This wire welding unit is arranged, and the electrode transfer is performed.
Moving means and arm driving means,
Between the pair of electrodes so as to sandwich the terminal
Contact is, by applying a voltage by the voltage applying means, to dissolve the insulating film by heating the electrode due to energization through the wire, the wire by the heating due to energization through the wire after dissolution of the insulating film Weld to the terminal.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

In the second invention, the deflection yoke frame can be rotated.
Wind the wire rod with the reel support and the insulation coating
Nozzle that moves the nozzle and a nozzle that moves the nozzle in a three-dimensional direction.
A line moved out of the nozzle, comprising:
The material is moved by a nozzle by the nozzle moving means and the
When it is wound around the deflection yoke frame by rotation of the deflection yoke frame
In both cases, insert the tip into the terminal provided on the deflection yoke frame.
A pair of arms extending substantially in parallel with each other in a coil manufacturing apparatus that ties a wire by moving a nozzle
A pair of electrodes attached to each arm end,
An arm that can drive a pair of arms to reduce the distance between each other
And a pair of arms and electrodes and
An electrode unit is constituted by the arm driving means,
An electrode moving means for moving the unit in a three-dimensional direction, a power supply for applying a voltage between the pair of electrodes, and a lead wire for electrically connecting these electrodes;
The electrode moving means and the power source constitute a wire welding unit.
And the wire welding unit is supported by the bobbin support.
This wire rod welding unit is placed on the side of the deflection yoke frame
And the electrode moving means and the arm driving means
Thereby, the pair of electrodes is attached to a wire entangled with the terminal.
The terminal is contacted so as to sandwich it, and the voltage is applied by the voltage applying means, and the insulating coating is melted by the heat generated by the electrode through the conductive wire, and the current is applied through the wire after the insulating coating is melted. The wires are welded to the terminals by the heat generated by the wire.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

According to the present invention , the spindle
Alternatively, after the work of winding the wire on the winding frame and the work of tying the wire to the terminal by rotating the deflection yoke frame and moving the nozzle, the pair of electrodes at the ends of the pair of arms are moved.
The terminal of the coil bobbin to which the wire is entangled
It is moved to a sandwiched arrangement, and a voltage is applied between the pair of electrodes by a power supply . As a result, electricity is first supplied through the conductive wire and the insulating film is melted by the heat generated by the electrodes, and then the current is applied through the wire after the insulating film is melted. Is done. Therefore, the winding work, the tying work, and the electrical connection work of the terminal and the wire can be continuously and efficiently performed in one device, and the working time of coil manufacturing can be reduced, and the device can be downsized. Can be. Also, since the electrical connection between the terminal and the wire is performed by welding and no solder is used, there is no room for corrosion of the wire due to the flux or occurrence of defects due to the adhesion of the solder ball to the bobbin. Further, unlike the case where the wire insulating coating is immersed in a solder bath, the wire insulating coating does not carbonize. During the winding operation and the tying operation, the pair of electrodes and the arm are retracted from the periphery of the winding frame by the electrode moving means, so that the electrode or the arm does not interfere with the winding operation and the tying operation. .

Claims (2)

[Claims] 1. A coil manufacturing apparatus comprising: a winding means for winding a wire having an insulating film around a winding frame; and a winding means for winding a wire to a terminal provided on the winding frame. , A pair of electrodes capable of contacting a wire entangled with the terminal so as to sandwich the terminal, moving means for moving at least one of the pair of electrodes or the winding frame, and a voltage for applying a voltage between the pair of electrodes. Application means, and a conductive wire for electrically connecting these electrodes, and by applying a voltage by the voltage applying means, the insulating coating is melted by heat generation of the electrode by energization through the conductive wire,
An apparatus for manufacturing a coil, wherein the wire is welded to the terminal by heat generated by energization through the wire after the insulating coating is melted. 2. A coil manufacturing method for performing a winding operation of winding a wire having an insulating film around a winding frame and performing a winding operation of winding a wire around a terminal provided on the winding frame. After completion of the work and the tying work, at least one of the pair of electrodes or the bobbin connected by a conductive wire is moved to dispose the pair of electrodes near the bobbin, and the wire rod is formed by the pair of electrodes. By applying a voltage to a pair of electrodes in a state where the terminal is sandwiched, the insulating film is melted by heat generation of the electrode due to energization through the conducting wire, and the insulating film is A method for manufacturing a coil, wherein the wire is welded to the terminal by heat generated by energization through the wire after melting.