JP2771102B2 - Method of winding barrier tape around coil and barrier tape treated coil - Google Patents

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 coil used for a transformer and the like and an improvement in a taping method accompanying a coil winding operation.

[0002]

2. Description of the Related Art Conventionally, a coil winding machine that performs a coil winding operation has been configured to wind a wire around a bobbin body by, for example, sending a wire from a nozzle while rotating a bobbin mounted on a spindle.

After the end of the wire is entangled with a terminal provided on the end face of the bobbin, it is guided from the terminal substantially parallel to the center axis of the bobbin.
It reaches the winding start position of the bobbin body. At this start position, the wire is locked to the bobbin body by a presser or tape, and is then bent by approximately 90 degrees into a winding wound around the body by rotation of the bobbin.

Further, in order to prevent corona discharge due to poor pressure resistance, some coils are wound only at the center of the bobbin body so that an interval is provided between the flange portion of the bobbin and the winding portion. is there. In that case, for example, as shown in FIG. 4, the barrier tape 40 is wound in advance on both ends of the body 3E at the non-winding position. The barrier tape 40 is wound to a thickness greater than the layer of the winding,
This restricts the wire material from laterally shifting from the winding position during or after the winding.

[0005]

When winding the bobbin 3 around the barrier tape 40, the terminal 3B of the bobbin 3 is used.
The lead wire from the wire to the winding portion passes over one barrier tape and reaches the winding position of the bobbin 3. At this time, as shown in FIG. 5, the barrier tape 40 and the bobbin body 3
There is a problem that the vertical portion 60 of the lead wire crawling down the step with E protrudes into the winding space, and this protruding portion interferes with the winding and causes winding disturbance. Further, since the lead wire is exposed while floating on the barrier tape 40, there is a problem that the exposed portion tends to move during the winding or to be displaced after the winding, and is easily damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems. In a coil winding operation using a barrier tape, a lead wire from a terminal to a winding position does not hinder the winding, and the outer periphery of the bobbin is not hindered. The purpose is to ensure that it is securely held.

[0007]

According to the present invention, there is provided a bobbin for a multiplex coil comprising a body for winding and a terminal for binding an end of a wire for winding. In a barrier tape processing coil in which a plurality of layers of barrier tape are wound around the non-winding position of the part, the barrier tape is wound around the body part by one or two turns.
After the application, the wire was guided from the terminal to the winding start position of the body portion across the wound barrier tape, and then the remaining portion of the barrier tape was overlapped and wound so as to cover the traversed wire.

[0008] Further , a body for winding and an end of a wire for winding.
In front of the multi-coil bobbin consisting of terminals
Wrap multiple layers of barrier tape around the non-winding position of the body
In the barrier tape processing coil, the barrier tape is cut into a plurality of tape pieces having a length slightly shorter than substantially one round of the body , and the cut portions of these tape pieces are overlapped and wound around the body, so that the terminal is removed from the terminal. A groove for accommodating a wire reaching the winding position of the body was formed in the axial direction across the layer of the barrier tape.

[0009] A plurality of layers of barrier tape may be provided on a non-winding position of the body portion of a multi- coil bobbin including a body portion for performing winding and a terminal for binding an end of a wire material for winding. In the wound barrier tape processing coil, apply tape to the barrier tape.
Step occurs between the cross section and the winding position
Form a groove of a depth that does not cross the barrier tape
A wire from the terminal to the winding position was arranged in this groove .

[0010]

[Function] Around one or two turns of the barrier tape on the body.
After winding, traverse over the wound barrier tape
Wire from the terminal to the winding start position of the trunk.
Wire formed by traversing the barrier tape
Step is extremely small. Then cover the crossed wires
And wrap the rest of the barrier tape
The wire material across the barrier tape is under the barrier tape
And the step between the coil and the coil is reduced.
Stably held by rear tape.

Alternatively, it is less than approximately one round of the trunk in advance.
Cut the barrier tape into short bobbin
Wrap the barrier tape in place
The wire from the terminal to the winding position is
By accommodating in this groove, the wire can be
The tape can be traversed, and the wire at the traverse is inside the groove
It is stably held on the side.

At a predetermined position, a groove traversing the barrier tape
Since it can be formed, the wire from the terminal to the winding position can be crossed
In a groove at a depth where there is no step between
This allows the wire to traverse the barrier tape without steps
The wire at the cross section is stably kept inside the groove.
I can have.

[0013]

1 to 3 show an embodiment of the present invention.

The bobbin 3 shown in FIG. 1A is provided with a body 3E to be wound and two terminals 3B for binding the ends of the wire for winding.

The winding on the bobbin 3 is performed at the center of the body 3E, and the other portion of the body 3E is covered with a barrier tape 40 over a predetermined thickness exceeding the thickness of the winding layer. It is wound.

The winding operation is performed by winding the wire supplied from the nozzle 13 shown in FIG. 1A around the body 3E by rotating the bobbin 3. The bobbin 3 is mounted on a spindle (not shown) and rotates arbitrarily according to the operation. Taping of the barrier tape 40 is performed by using a taping unit 23 as shown in FIG. 3, and a pressing tool 1 is used to bring the cut portion of the tape into close contact with the body 3E.
8 is used.

These members constitute a part of an automatic winding machine that automatically performs a series of coil productions including a winding operation and a taping operation. The spindle is supported at a fixed position, and the nozzle 13 and the holding member 18 are supported by arms (not shown) so as to be movable in three axial directions.

The taping unit 23 includes the upper and lower cylinders 2.
The guide 27, the cutter 30, the chuck 29, and the stroking member 32 are disposed on a base member 25 that is supported movably in the up-down direction through the base member 4.

The guide 27 is provided with a guide groove 27A for guiding the insulating tape 26 and a guide groove 27B for guiding the two barrier tapes 40 in parallel, and moves in the X-axis direction in FIG. Then, the guide grooves 27A and 27B are selectively positioned in front of the chuck 29.

The chuck 29 has gripping members 29A and 29B which open and close in accordance with the expansion and contraction of the chuck cylinders 28A and 28B.
And Then, the tip of the insulating tape 26 or the barrier tape 40 is gripped according to the moving position of the guide 27,
The gripping members 29A and 29B are moved in the Y-axis direction in the drawing by a moving mechanism (not shown) provided on the base member 25.
Pulls out the tape 26 or 40 which is gripped by the guide 27.

The cutter 30 is provided at the end of the guide 27 and is provided between the cutter cylinder 3 and the base member 25.
The guide 2 is displaced in the vertical (Z-axis) direction according to the expansion and contraction of
The tape 26 or 40 is cut between the tape 7 and the chuck 29.

The stroking member 32 is located below the bobbin 3 and is supported by the base member 25 via a stroking cylinder 33. The stroking member 32 has two rectangular parallelepiped members 32A and 32B supported by a spring 36, and these members 32A and 32
2B elastically presses the body 3E of the bobbin 3.

When the barrier tape 40 is wound around the bobbin 3, first, the barrier tape 40 is chucked by the chuck 29.
Is pulled out of the guide 27, and a part of the base member 25 is attached to the body 3E by raising the base member 25.

Next, the chuck 29 is opened, and the tip of the barrier tape 40 is peeled off from the gripping members 29A and 29B.
The bobbin 3 is rotationally driven while the stroking member 32 is lifted and the barrier tape 40 is stroked on the trunk 3E. Thereby, the barrier tape 40 is wound around the trunk 3E. When the barrier tape 40 has been wound around the body 3E about one or two turns, the rotation of the bobbin 3 is stopped, and the cutter 30 is rotated.
Is raised to cut the barrier tape 40.

The end of the cut barrier tape 40 is not wrapped around the trunk 3E until the end, and extends over an appropriate length in FIG.
Leave floating in the air as shown in (a).

Here, after the nozzle 13 is moved and one end of the wire is tied to the terminal 3B, the nozzle 13 is moved in the axial direction of the bobbin 3 to guide the wire to the winding start position inside the barrier tape 40.

When the wire reaches the winding start position by traversing over the barrier tape 40 as shown in FIG. 1 (b), the holding member 18 is then moved to remove the end of the barrier tape 40 floating in the air. As shown in FIG. 1 (c), it is pressed on the wire. Thereby, the barrier tape crossing part of the wire, that is, the lead wire is locked to the body 3E. The portion wound up to this point constitutes the first half of the barrier tape 40.

Here, the chuck 29 is operated again,
After the barrier tape 40 is newly pulled out from the guide 27 and attached onto the already wound barrier tape 40 of the body 3 </ b> E, the barrier tape of the body 3 </ b> E is stroked by the stroke of the stroke member 32 and the rotation of the bobbin 3. A new barrier tape 40 is wrapped on the top 40 as a rear half portion to a predetermined thickness. At this stage, the wire fed from the nozzle 13 together with the barrier tape 40 is wound around the body 3E.

When the barrier tape 40 is wound to a predetermined thickness, the cutter 30 is raised to cut the barrier tape 40. The cut end of the barrier tape 40 is brought into close contact with the body 3E by further slightly rotating the bobbin 3 while rubbing with the rubbing member 32.

In this way, the lead wire is buried in the lower layer of the barrier tape 40, and the wire is bent at a right angle at the position exiting from the barrier tape 40 and wound around the body 3E. Compared to the case where the wire traverses over the barrier tape 40 after all the barrier tape 40 is wound, the cross section of the wire buried under the barrier tape 40 is at the trunk 3E.
Is very small, so that the protrusion of the wire rod over the step into the winding space is also small. Therefore, the lead wire does not hinder the winding, and the winding of the wire in the winding operation is less likely to occur.

Further, since the barrier tape 40 is wound over the lead wires in multiple layers, there is no possibility that the lead wires are displaced by the tension at the time of winding. For this reason, a coil having a good-quality winding portion can be obtained.

FIG. 2 shows another embodiment of the present invention.

Here, as shown in FIGS. 2 (a) to 2 (d), the barrier tape 40 is cut by a length that is slightly missing over one circumference of the body 3E so that the cut portion is located at the position of the terminal 3B. Wrap around the trunk 3E so that they match. As shown in FIGS. 2 (e) to 2 (h), the barrier tape 40 cut in the same manner is superimposed on the barrier tape 40 which has been wound and wound, so that the barrier tape 40 reaches the final thickness. Is wound around the trunk 3E. As a result, a groove 50 formed by the cut portion is formed in the barrier tape 40 wound around the trunk 3E. At this stage, since the wire is not entangled with the terminal 3B, the bobbin 3 can be arbitrarily rotated. Therefore, the barrier tape 40 to be wrapped around the body 3E with the stroked member 32 alone without using the pressing member 18. Can be in close contact.

After finishing the winding of the barrier tape 40, the wire is entangled with the terminal 3B by the operation of the nozzle 13, and the nozzle 13 is moved to the winding start position as shown in FIG. Thus, the wire traverses the barrier tape 40 through the groove 50. With the start of the winding by the rotation of the bobbin 3, the wire comes into contact with the outlet of the groove 50, and at that position the wire is bent at 90 degrees and wound around the trunk 3E. Since the barrier tape 40 is wound to a predetermined thickness, the bending portion does not get over the barrier tape 40 due to the tension applied to the wire, and the bending portion is maintained in a state of contacting the outlet of the groove 50.

In this case, the lead wire extending from the terminal 3E to the winding position is in direct contact with the body 3E and the barrier tape 40
Therefore, there is no step between the winding stem and the lead wire, and the winding can be performed extremely stably. In addition, there is no possibility that the lead wire provided in the groove 50 is damaged or shifted.

[0036]

As described above, according to the present invention, the barrier tape
After wrapping about 1 or 2 rounds around the body, winding
Traverse over the girder barrier tape from the terminal to the body
The wire is guided to the winding start position of
Overlap the rest of the barrier tape to cover the material and wind
Because of the beam, the cross section of the wire with the barrier tape is stably held under the barrier tape.

Alternatively, a barrier tape cut slightly shorter than substantially one round of the trunk is wound around a bobbin with the cut portions overlapped, so that a groove is formed at a predetermined position so as to cross the barrier tape. The part can be stably held in this groove.

In addition, the barrier tape is applied to the tape in the transverse direction,
A groove with a depth that does not cause a step between the crossing and the winding position
Forming and winding position from the terminal across the barrier tape
Is arranged in this groove, so there is no large step between the barrier tape crossing part of the wire and the winding part,
The inconvenience that the wire rod crawling down the step hinders the winding can be prevented. Therefore, the inconvenience that the cross section of the barrier tape of the wire is shifted or damaged can be prevented.

[0039] For this reason, the disturbance of the winding is reduced and the portion of the wire crossing the barrier tape, that is, the lead wire is protected, so that the effect of improving the quality of the coil can be expected.

[Brief description of the drawings]

FIG. 1 is a perspective view of a coil bobbin during a barrier tape winding operation according to an embodiment of the present invention.

FIG. 2 is a perspective view of a coil bobbin during a barrier tape winding operation according to another embodiment of the present invention.

FIG. 3 is a perspective view of a taping unit that winds a barrier tape.

FIG. 4 is a composite view of a side surface of a coil bobbin and a cross section of a barrier tape showing a conventional method of winding a barrier tape.

FIG. 5 is an enlarged view of a main part of FIG.

[Explanation of symbols]

 3 bobbin 3B terminal 3E body 40 barrier tape

Claims (3)

(57) [Claims] 1. A multi- coil bobbin comprising a body for winding and a terminal for wrapping an end of a wire for winding, a plurality of layers of barrier tape are provided at non-winding positions on the body. Wrapped ba
In Riyatepu processing coil, said barrel barrier tape
After wound about one turn or two turns in part, across the top of the barrier tape wound into the winding start position of the body portion from said terminal leads to the wire, the rest of the barrier tape to cover the subsequent cross the wire A method of winding a barrier tape for a coil, wherein the winding is performed by overlapping portions. 2. A multi- coil bobbin comprising a body for winding and a terminal for tying an end of a wire for winding, a plurality of layers of barrier tape are provided at non-winding positions on the body. Wrapped ba
In the rear tape processing coil , the barrier tape is cut into a plurality of tape sections having a length slightly shorter than approximately one round of the trunk,
By superposing the cut portions of these tape sections and winding them around the body, a groove for accommodating the wire rod from the terminal to the winding position of the body was formed in the axial direction across the layer of the barrier tape. Characteristic coil barrier tape winding method. 3. A multi-layer bobbin for a multi- coil bobbin comprising a body for winding and a terminal for winding an end of a wire for winding, a plurality of layers of barrier tape are provided on the non-winding position of the body. In the wound barrier tape processing coil, tape is applied to the barrier tape.
In the cross direction, there is no step between the cross section and the winding position.
Forming a groove of great depth and traversing the barrier tape
That the wire from the wire to the winding position was placed in this groove
Features barrier tape processing coil .