JP3070026B2 - How to fix the coil lead wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead wire fixing means for taking out a winding of a coil so as to be entangled with a terminal.

[0002]

2. Description of the Related Art In general, a lead wire connected to a terminal of a coil is drawn in a direction orthogonal to the winding of the coil. It is necessary to lock this lead wire at a predetermined position on the outer periphery of the bobbin so as not to loosen the winding. It is attached in the axial direction, and a part of the lead wire or the winding is locked on the outer periphery of the bobbin or the winding of the bobbin (for example, JP-A-3-173409, JP-A-2-146713, etc.).

[0003]

In this case, the wire is bent at a right angle between the winding portion of the coil and the lead portion reaching the terminal. For this reason, the lead wire at the end of the winding has to traverse over the wound winding, and if the lead wire and the winding are not insulated, there is a risk of causing a withstand voltage failure of the coil. . Therefore, at the end of the winding, it is necessary to first attach a tape for insulation between the winding and the lead wire, and then attach a tape from above the lead wire to fix the lead wire, which requires a troublesome work.

Further, when the lead wire is fixed only by the adhesive force of the adhesive tape to the winding, the holding force tends to be insufficient, and as a result, the wire is likely to float or shift around the bent portion. There was a problem.

[0005] Furthermore, a lubricant is often applied to the surface of the wire to improve the slip, which tends to reduce the adhesive force of the adhesive tape to the wire and promote insufficient holding power. Was.

On the other hand, in order to automate the manufacture of the coil, it is necessary to simplify the processing of the coil lead wire as much as possible. For that purpose, it is desirable to fix the lead wire with only an adhesive tape.

The present invention has been made to solve the above problems, and has as its object to more reliably and easily fix and insulate a coil lead wire using an adhesive tape.

[0008]

SUMMARY OF THE INVENTION According to the present invention, at the start and end of a winding operation for winding a coil wire around a bobbin, a drawer is provided between a bobbin winding and a lead wire connecting terminal provided on the bobbin. In the method of fixing a coil lead lead wire for fixing a wire at a predetermined position on a bobbin with an adhesive tape, at the end of winding, the adhesive tape is wound one or more turns in the winding direction of the wire, and the end of the beginning and end of winding of the adhesive tape Form an overlap
Together with, to secure the wire in this overlapped portion, the line
Wind the wire from the end of the tape where the material is fixed.
Bend in the direction perpendicular to the line direction and guide it to the bobbin terminal.
Insulation between the wire bent at right angles to the lower wire
This was performed with the adhesive tape .

Further, the adhesive tape is brought into contact with the bobbin, and the adhesive tape is wound around the winding together with the wire by the rotation of the bobbin in the same rotation direction as the winding, so that the wound wire is wound. Was not loosened when the adhesive tape was applied.

Further, the adhesive tape is brought into contact with the bobbin from the side opposite to the nozzle for sending the wire, and the adhesive tape is brought into contact with the wire by rotating the bobbin in the same rotation direction as when winding.
The wire was wound around and wound around the wire so that the wound wire was not loosened when the adhesive tape was stuck.

[0011]

The adhesive tape is wound one or more times in the winding direction of the wire to form an overlapping portion at the beginning and end of the winding of the adhesive tape, and the overlapping portion forms the adhesive tape and the wire or the adhesive tape and the bobbin. In addition to the above adhesive force, a strong adhesive force between the adhesive tapes is generated, so that the holding force of the lead wire can be enhanced. Therefore, the wire rod
From the fixed part to the bobbin terminal
Guide, when tying the wire to this bobbin terminal,
There is no danger that part of the windings will lift or slip
Work can be performed stably. In addition, since the adhesive tape is interposed between the lead wire and the lower winding (lower wire), the winding and the lead wire are insulated, and the fixing and insulation of the lead wire are wrapped once with the adhesive tape. Can be done by work .

Further, the adhesive tape can be easily wound around the bobbin by rotating the bobbin by bringing the adhesive tape into contact with the bobbin. In addition, the taping operation can be performed as a series of operations subsequent to the winding operation, and the winding can be prevented from becoming loose during taping. In addition, this taping is performed in the same rotation direction as when winding.
The rotation of the bobbin makes it integral with the winding.
The drawn wire does not loosen during taping work.

Further, by winding the adhesive tape around the bobbin on the side opposite to the nozzle, the nozzle and the adhesive tape do not interfere with each other, and the winding of the adhesive tape is further facilitated.

[0014]

1 to 4 show an embodiment of the present invention.

FIG. 1 shows a method of fixing the lead wire when winding the wire 2 around the bobbin 1, and FIG. 2 shows a method of fixing the lead wire at the end of winding the wire 2. FIG. 3 shows a configuration of a taping unit 7 for implementing these lead wire fixing methods. The taping unit 7 constitutes a part of a coil manufacturing apparatus for automatically and automatically manufacturing a coil.

In this coil manufacturing apparatus, the bobbin 1 is supported by a turret 3 and rotates according to the operation of a motor (not shown). The bobbin 1 has terminals 4A and 4B for binding the wire 2.

The wire 2 is supplied from a nozzle 5 which is supported above the bobbin 1 so as to be freely movable.

A movable holding member 6 is provided for temporarily locking the wire 2 on the outer periphery of the bobbin 1. The coil manufacturing apparatus supports a plurality of bobbins 1 in parallel on a turret 3 as shown in FIG.
Is supported close to each bobbin 1 so that a plurality of coils can be manufactured at one time.

Below the bobbin 1, a taping unit 7 as shown in FIG. 3 is provided. Taping unit 7
Is provided with a vertically movable rubbing roller 9 for supporting the adhesive tape 8 with the adhesive surface facing upward, and a holder as the adhesive tape 8 adhered to the bobbin 1 is wound around the bobbin 1 by the rotation of the bobbin 1. The adhesive tape 8 is sent out from 11. In addition, a cutter 10 that cuts the adhesive tape 8 wound around the bobbin 1 and a chuck 12 that horizontally moves and grips the cut end of the adhesive tape 8 are provided. The number of taping units 7 is equal to the number of bobbins 1 as shown in FIG.

The turret 3, the nozzle 5, and the holding member 6 have their own moving mechanisms, and are respectively displaced in three-dimensional directions according to the operation of the moving mechanism.

Next, the operation will be described.

Prior to the winding of the wire 2 around the bobbin 1, the nozzle 5 is first moved to bind the wire 2 to the terminal 4A.

Then, the wire 5 is guided from the terminal 4A to the outer periphery of the bobbin 1 by moving the nozzle 5, and temporarily fixed to the outer periphery of the bobbin 1 by the pressing member 6 as shown in FIG.

Next, as shown in FIGS. 1 (b) to 1 (d), while the bobbin 1 is stationary, the nozzle 5 turned 90 degrees is rotated once in the winding direction of the wire. Thus, the wire 2 guided from the terminal 4 </ b> A to the outer periphery of the bobbin 1 is bent at approximately 90 degrees by the pressing member 6 and then wound around the outer periphery of the bobbin 1. Note that a portion of the wire 2 from the terminal 4A to the bending portion is one lead wire of the coil. The nozzle 5 is returned from the rollover state to the original downward position after one rotation.

Then, the turret 3 is moved downward while holding the wire 2 by the pressing member 6, and the adhesive tape 8 supported by the taping unit 7 is applied to the outer periphery of the bobbin 1 from below as shown in FIG. Make contact.

In this state, the bobbin 1 is set in the direction of the arrow in FIG. 1F , that is, when the wire 2 is wound around the bobbin 1.
When the adhesive tape 8 is rotated in the same rotation direction as the rotation direction of the bobbin 1 along with the wire 2 supplied from the nozzle 5.
Wrapped around the adhesive tape 8 and bobbin 1
Is sandwiched between the outer peripheral portion of the main body. The holding member 6 is retracted at the same time as the bending portion is sandwiched.

When the adhesive tape 8 has been fed to a length slightly beyond the lead wire, the cutter 10 is driven to cut the adhesive tape 8. Then, stroke the roller 9 as shown in FIG.
Then, the bobbin 1 is further rotated slightly while being raised and pressed against the bobbin 1 so that the cut end of the adhesive tape 8 is wound around the bobbin 1.

Thus, the lead wire is fixed between the adhesive tape 8 and the outer periphery of the bobbin 1.

The winding operation of the coil is performed while the bobbin 1 is rotationally driven and the nozzle 5 is appropriately moved in the axial direction of the bobbin 1 from this state, and the lead wire fixed as described above is placed on the upper side. Since the wire 2 to be wound and the adhesive tape 8 are insulated from each other, there is no possibility of causing a failure in pressure resistance.

The wound wire 2 is entangled with the terminal 4B from the state shown in FIG. 2 (a). At this time, first, the turret 3 is lowered to move the bobbin 1 to the chuck 12 as shown in FIG. 2 (b). The end is brought into contact with the gripped adhesive tape 8, and FIG.
As shown in (c) to (e), the bobbin 1 is rotated while being pressed by the rubbing roller 9 so that the adhesive tape 8
Is wound around the winding with the wire 2 over about one round. In this case, the rotation of the bobbin 1 is controlled according to FIGS.
As shown in the figure, when winding the wire 2 around the bobbin 1
The rotation direction is the same as the rotation direction.

Thereafter, as shown in FIG.
2 (g), the bobbin 1 is further rotated to overlap the cut portion of the adhesive tape 8 on the already wound adhesive tape 8 and adhered, as shown in FIG. 2 (g). The lowering roller 9 is lowered as shown in FIG.

Then, as shown in FIG. 2 (i), the nozzle 5 is moved and the wire 2 is entangled with the terminal 4B while the wire 2 extending from the end of the adhesive tape 8 is pressed by the pressing member 6. The portion bent from the end of the adhesive tape 8 and reaching the terminal 4B becomes the other lead wire of the coil.

After the wire 2 is entangled with the terminal 4B, the wire 2 is cut between the terminal 4B and the nozzle 5 by a cutter (not shown) to complete the fixing of the lead wire.

Since the adhesive tape 8 that has made one round of the bobbin 1 is firmly adhered to the overlapping portion at the beginning and end of the winding, the bent portion of the lead wire bent at the end of the adhesive tape 8 and the adhesive tape 8 With sufficient holding force for the wire rod 2 wound underneath. Therefore, there is no possibility that a part of the refraction part or the winding will float or shift.

Since the lead wire and the winding are insulated by the adhesive tape 8 in the same manner as the lead wire at the beginning of winding, there is no fear that the lead wire will cause a withstand voltage failure.

The adhesive tape 8 at the beginning and end of the winding
Is wound, the nozzle 5 is supported above the bobbin 1, and the adhesive tape 8 is brought into contact with the bobbin 1 from below, so that the nozzle 5 and the tape unit 7 do not interfere with each other, The winding operation is performed smoothly with minimum operation.

In the above embodiment, the case where the number of the lead wires is two, that is, the start and end of the winding, has been described. However, as shown in FIG. Terminals 4A, 4B, 4C. . . In the manufacture of a coil in which each lead wire is entangled, the tape winding operation at the beginning and end of the above-mentioned embodiment may be repeated a plurality of times.

[0038]

As described above, according to the present invention, an adhesive tape is wound around a bobbin over one or more turns at the end of winding.
Since the overlapping portion is formed at the end of the winding of the adhesive tape at the beginning and end of the winding, the strong adhesive force between the adhesive tapes at the overlapping portion provides a sufficient wire rod holding force. did
Then, bend the wire at right angles from this fixed part
Guide to the bobbin terminal and tie the wire to this bobbin terminal
Part of the refraction or windings rises or shifts
There is no danger that work can be performed stably. Also, in the overlapping portion, the lead wire and the winding (lower layer wire) are insulated by the adhesive tape, so that there is no possibility of causing a withstand voltage failure. Therefore, the fixing and insulation of the coil lead wire can be reliably performed simultaneously.

Further, by rotating the bobbin with the adhesive tape in contact with the bobbin, the adhesive tape can be easily wound around the bobbin. In addition, the taping operation can be performed as a series of operations subsequent to the winding operation, and the winding can be prevented from becoming loose during taping. In addition, this taping is performed in the same rotation direction as when winding.
The rotation of the bobbin makes it integral with the winding.
The drawn wire does not loosen during taping work.

Further, by bringing the adhesive tape into contact with the bobbin from the side opposite to the nozzle, mutual interference between the nozzle and the adhesive tape can be prevented, and the operation of winding the adhesive tape can be performed smoothly with minimum operations.

Therefore, there is a favorable effect in realizing the full automation of the coil manufacturing process including the fixing of the lead wire.

[Brief description of the drawings]

FIG. 1 is a perspective view of a taping operation at the beginning of coil winding according to an embodiment of the present invention.

FIG. 2 is a perspective view of a taping operation at the end of winding of a coil.

FIG. 3 is a perspective view of a taping unit.

FIG. 4 is a perspective view of a completed coil.

[Explanation of symbols]

 1 bobbin 2 wire 4A, 4B terminal 8 adhesive tape

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Tanji 2-3-6 Tagawa, Yodogawa-ku, Osaka-shi, Osaka Kitano Heights 1F, Nittoku Engineering Co., Ltd. Osaka Branch (56) References JP-A-3 173409 (JP, A) JP-A-47-25009 (JP, A)

Claims (3)

(57) [Claims] At the start and end of a winding operation of winding a coil wire around a bobbin, a lead wire between the bobbin winding and a lead wire tying terminal provided on the bobbin is fixed to the bobbin with an adhesive tape. In the method of fixing the coil lead wire to be fixed to the position, at the end of winding, the adhesive tape is wound one or more turns in the winding direction of the wire, forming an overlapping portion at the beginning and end of winding of the adhesive tape, The wire is fixed at the overlapping part, and the wire is bent in the direction perpendicular to the winding direction from the end of winding of the adhesive tape to which the wire is fixed, guided to the bobbin terminal, and the wire bent in the direction perpendicular to this wire and the lower layer A method for fixing a coil lead wire, wherein insulation with a wire is performed by the adhesive tape. 2. A wound wire material, wherein an adhesive tape is brought into contact with a bobbin, and the bobbin is rotated while rotating the bobbin in the same rotation direction as the winding process so that the adhesive tape is wound around the winding wire together with the wire material. 2. The method for fixing a lead wire of a coil lead according to claim 1, wherein the wire is not loosened when the adhesive tape is applied. 3. An adhesive tape is brought into contact with the bobbin from the side opposite to the nozzle for sending the wire, and the adhesive tape is wound together with the wire by rotating the bobbin in the same rotation direction as when winding.
2. The method for fixing a coil lead wire according to claim 1, wherein the wound wire is prevented from being loosened when the pressure-sensitive adhesive tape is adhered by being applied while being wound around the wire.