JP2859848B2 - Tap forming mechanism of winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field related to a mechanism for forming a tap serving as a lead by a wire itself at an intermediate portion of a wire installed in a winding device and wound.

[0002]

2. Description of the Related Art Conventionally, forming a tap by a wire itself in a winding device has been performed manually by an operator.

That is, a hook is hooked on a wire between a supply mechanism for supplying the wire and a winding mechanism on which the wire is wound, and the wire is drawn out. Attach the ends and glue the insulating paper to the drawn part of the wire.

[0004]

In the above-described conventional manual tap formation, a difference occurs in the accuracy of forming taps formed depending on the skill of the worker. Due to the formed tap having a low forming accuracy, there is a problem that a winding form in the winding mechanism becomes uneven or insulation failure between the wound coil and the tap is caused. Further, there is a problem that it is a bottleneck of the fully automatic winding device which is being advanced in automation.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a tap forming mechanism of a winding device capable of automatically forming taps having high forming accuracy. .

[0006] In the winding apparatus, the tap is formed by a member different from the wire rod.
No. 95 discloses a tap forming mechanism. Although this conventional tap forming mechanism is directed to automation, it cannot be used for a technique of forming a tap using a wire itself.

[0007]

In order to solve the above-mentioned problems, the tap forming mechanism of the winding device according to the present invention employs the following means.

That is, in the first aspect, the apparatus is provided between a supply mechanism for supplying the wire and a winding mechanism for winding the wire,
A drawer that draws out the wire in a direction perpendicular to the feed direction of the wire and narrows the base of the wire drawn out, and a binding part that advances and retreats in a direction perpendicular to the direction in which the wire is drawn out and binds the base of the wire drawn out with adhesive tape. And an insulating portion for advancing and retracting from the wire drawing base end side in the wire drawing direction and adhering insulating paper to a drawing portion including the wire drawing base end.

According to this means, the tap is automatically formed by the cooperation of the drawer, the binding part, and the insulating part. In addition, by moving the binding portion and the insulating portion forward and backward in a certain direction with respect to the lead portion of the wire, the accuracy of forming the wire is increased.

According to a second aspect of the present invention, in the tap forming mechanism of the winding device according to the first aspect, the drawer includes a drawer roller capable of attaching and detaching the wire, hanging the wire, and moving in a direction orthogonal to the feed direction of the wire. And a narrowing-down roller for guiding a change in the direction of the wire drawn by the draw-out roller and narrowing the drawn-out base end of the drawn wire.

In this means, the wire to be drawn and narrowed for forming the tap comes into contact with the circumference of the draw-out roller and the narrowing-down roller, so that the wire is smoothly drawn out and narrowed without being damaged.

According to a third aspect of the present invention, there is provided a cutting section for feeding an adhesive tape from a tape roll and cutting the tape into a predetermined length, and a tape section cut from the adhesive tape so that an adhesive surface is directed to the wire and an axial direction of the wire. A tape piece holder that is stretched on a parallel surface, and a winding portion that presses the tape piece stretched on the tape piece holder from the non-adhesive side to separate from the tape piece holder, presses it with elastic pressure, and winds it around a wire. Is provided.

In this means, since the tape piece cut to a fixed length from the adhesive tape is wound around the wire by elastic force, the effect on the wire such as unnecessary stress such as the conventional tension is prevented. Further, since a tape piece stretched on a plane parallel to the axial direction of the wire is wound around the wire, the operating area of each part is reduced.

According to a fourth aspect of the present invention, in the tap forming mechanism of the winding device according to the third aspect, the cutting portion is removably sandwiched by an adhesive tape and reciprocates at an interval corresponding to a cutting length of the tape piece from the adhesive tape. It is characterized by comprising a moving feeding chuck portion and a cutter for cutting the adhesive tape at a fixed position.

In this means, the tape piece is cut from the adhesive tape in a substantially linear operation range.

According to a fifth aspect of the present invention, in the tap forming mechanism of the winding device according to the third or fourth aspect, the tape piece holder sticks the tape piece before the cutting section cuts the tape piece from the adhesive tape. And two parallel cylinders or cylinders which move synchronously with the feeding of the adhesive tape by the cutting section.

In this means, the operating area of the tape piece holder largely overlaps the operating area of the cutting section. Further, the adhesive area for stretching the tape piece to the tape piece holder becomes linear.

According to a sixth aspect of the present invention, in the tap forming mechanism of the winding device according to any one of the third to fifth aspects, the resilient pressure of the winding portion is such that the tape piece can be moved both forward and backward with respect to the wire rod of the winding portion. Is formed by a leaf spring having a bent shape that presses against a wire.

According to this means, the pressing of the tape piece against the wire is continued during the operation of the winding portion due to the bent shape of the leaf spring.

According to a seventh aspect of the present invention, in the tap forming mechanism of the winding device according to any of the third to sixth aspects, at least the end of the tape piece wound around the wire rod is pressed by an elastic force separately from the winding portion. And a winding assisting part for winding the wire around the wire.

According to this means, at least the terminal processing of the end of winding the tape piece around the wire is surely performed.

According to claim 8, in the tap forming mechanism of the winding device according to any one of claims 1 to 7, the insulating portion may include:
A chuck section for covering two drawn sheets including the base end of the wire with two sheets of insulating paper coated with an adhesive, and a bonding roller for bonding the insulating paper covered with the wire by heating and pressing; It is characterized by consisting of.

According to this means, the insulating paper is securely bonded to the drawn-out portion of the wire by a combination of the coating and the bonding by heating and pressing.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a tap forming mechanism of a winding device according to the present invention will be described below with reference to the drawings.

The winding device in which this embodiment is installed is:
This is to manufacture coils used in pole transformers and the like.

That is, between the supply mechanism 1 comprising a wire roll on the supply side of the wire L and the winding mechanism 2 comprising a coil core or the like on the winding side of the wire L, the wire L is formed by rolling, rolling or the like. Mechanism 3 for processing from a round wire to a square wire, and a tap T
And a tap forming mechanism 4 that forms

The tap forming mechanism 4 is composed of a drawer 41, a binding part 42, and an insulating part 43 in which the advancing / retreating direction and the advancing / retreating area are arranged and combined in a compact manner.

As shown in detail in FIGS. 2 to 5, the drawing section 41 is composed of drawing rollers 411 and narrowing rollers 412.

The pull-out roller 411 of the pull-out section 41 is composed of an upper pull-out roller 411a and a lower pull-out roller 411b which are divided in the upper and lower axial directions. To move back and forth.

The narrowing roller 412 of the drawing section 41
Main squeezing roller 41 provided at a position in contact with the feeding direction of
2a and the arm 31 fixed to the main narrowing roller 412a
2b and a main squeezing roller 41 fixed to the arm 312b
The auxiliary narrowing roller 412c has a diameter smaller than that of the auxiliary narrowing roller 2a, and these components are provided to face each other in the feed direction of the wire L. The main squeezing roller 412a is adapted to move close to and away from the feed direction of the wire L by an actuator and to rotate.

The binding portion 42 includes a tape roll holder 421 and a cutting portion 42, as shown in detail in FIGS.
2, tape piece holder 423, winding part 424, winding auxiliary part 425, tape roll 426, adhesive tape 42
7, each material member of the tape piece 428.

The tape roll holder 421 of the binding unit 42
Is for rotatably supporting the tape roll 426 wound with the adhesive tape 427, and guides the horizontal support shaft 421a for supporting the tape roll 426 and the adhesive tape 427 fed from the tape roll 426 in the vertical direction. And a guide roller 421b.

The cutting portion 422 of the binding portion 42 is provided below the tape roll holder 421, and the adhesive tape 427 is attached to the adhesive surface 427a and the non-adhesive surface 42.
7b, a feeding chuck portion 422a formed of a pair of thin bars which can be opened and closed from both sides and which can be inserted and detached, and a cutter 422b for cutting the adhesive tape 427. The bar is approached by the actuator,
It moves up and down a certain length in the vertical direction as it separates. Further, the cutter 422b is provided at a fixed position in the vertical direction below the feeding chuck portion 422a. In order to form the tape piece 428, the cutter 422b is brought into contact with the non-adhesive surface 502 of the adhesive tape 427 from an orthogonal direction by an actuator. To move back and forth.

The tape piece holder 423 of the binding portion 42 is provided below the feeding chuck portion 422a of the cutting portion 422, and the shaft of the wire L provided at a predetermined interval in the vertical direction. It consists of two horizontal cylinders or cylinders parallel to the direction. The tape piece holder 423 approaches and separates from the adhesive surface 427a of the adhesive tape 427 by the actuator, and moves up and down by a certain length in the vertical direction. In addition, this tape piece holder 4
23 is moved up and down by the feeding chuck section 42 of the cutting section 422.
It is synchronized with the vertical movement of 2a with the same length.

The winding portion 424 of the binding portion 42 is
It is provided below the second cutter 422b, and includes a U-shaped guide 424a and a leaf spring 424b housed inside the guide 424a. Guide 42
4a is a flat upper piece 424aa and an L-shaped lower piece 424.
The open side of the U-shape, which is formed by a and b, is directed toward the wire L, and is moved in the horizontal direction with respect to the wire L through the space between the tape piece holders 423 by an actuator. The leaf spring 424b is fixed near the corner of the lower piece 424ab of the guide 424a, and has a free end 424ba curved in an arc shape.
And the upper piece 4 of the guide 424a following the free end 424ba
A horizontal portion 424bb formed so as to be pressed against or close to 24aa, and a guide 424 following the horizontal portion 424bb.
and a vertical portion 424bc formed to be bent by about 90 degrees toward the lower piece 424ab of FIG.

The winding assisting portion 425 of the binding portion 42 includes a wire L
And an upper leaf spring 425a, a lower leaf spring 425b, and a holder 425c for fixing the base ends of the upper leaf spring 425a and the lower leaf spring 425b. Consists of The upper leaf spring 425a has a free end 425aa formed in an arc shape and a free end 425aa.
Vertical portion 42 formed to extend in the vertical direction following
5ab and a horizontal portion 425ac formed to extend in the horizontal direction following the vertical portion 425ab. The lower leaf spring 425b is formed in an arc shape, and
The free end 425aa is provided with a free end 425ba which is pressed against or close to the free end 425aa of the 25a, and an inclined portion 425bb formed to extend obliquely following the free end 425ba. The holder 425c is configured to move in the horizontal direction with respect to the wire L by an actuator.

As shown in detail in FIGS. 24 to 26, the insulating portion 43 includes a support arm 431, a chuck portion 432,
It is made up of each part in which a pair of adhesive rollers 433 are opposed to each other, and a material member of the insulating paper 434.

The support arm 431 of the insulating portion 43 is formed in a plate shape, and is moved forward and backward in the direction perpendicular to the feed direction of the wire L by the actuator.

The chuck portion 432 of the insulating portion 43 includes a chuck claw 432 a for holding the insulating paper 434 and a chuck claw 432.
a shaft 432b that rotatably supports a on the support arm 431
Consists of The chuck claw 432a is rotated by an actuator so that the insulating paper 434 can be attached and detached.

The adhesive roller 433 of the insulating portion 43 supports a cylindrical roller body 433a having a built-in heater and an arm 433b rotatably supporting the roller body 433a on the support arm 431. The arm 433b is moved up and down by the actuator so as to move the roller body 433a facing and away from each other.

For each of the above-mentioned actuators (not shown), a servo motor, an air cylinder, or the like is selected according to the operating characteristics of each part. In addition, the respective units to be synchronized are supported by a common support frame or used as an actuator.

In the embodiment configured as described above, first, as shown in FIG. 1, the tap T is pulled out and narrowed by the drawer 41.

That is, as shown in FIG.
1 upper pull-out roller 411a, lower pull-out roller 411b
Move in the direction perpendicular to the feed direction of the wire L in a state where the wire L is separated vertically, and pass through the wire L. Then, as shown in FIG. 3, the upper pull-out roller 411a and the lower pull-out roller 411b of the pull-out roller 411 are connected and moved in opposite directions to pull out the tap T. Thereafter, as shown in FIG.
The tap T is narrowed by approaching the twelve main narrowing rollers 412a. Then, as shown in FIG. 5, the main narrowing roller 412a of the narrowing roller 412 is rotated to completely narrow the tap T.

In the drawing and narrowing of the tap T, the wire L is not bent by contacting the circumference of the pull-out roller 411 and the narrowing roller 412, so that the wire L is prevented from being damaged and the tap T is pulled out. , Narrowing down is performed smoothly.

Next, as shown in FIG. 6, the pulled-out base end of the pulled-out and squeezed tap T is connected with the adhesive tape 42 by the binding portion 42.
7 united.

In the binding section 42, first, the adhesive tape 42
7 to form a fixed length tape piece 428.

That is, as shown in FIG. 8, the feeding chuck portion 422a of the rising cutting portion 422 is closed, the adhesive tape 427 is sandwiched, and the rising tape piece holder 423 is opened.
Is brought close to the adhesive surface 427a of the adhesive tape 427 and adhered. Then, as shown in FIG. 9, the feeding chuck portion 422a of the cutting portion 422 and the tape piece holder 423 are synchronously lowered to the position of the wire L, the winding portion 424, and the winding auxiliary portion 425, and the adhesive tape 427 is moved. Unwind from the tape roll 426. Thereafter, as shown in FIG.
The cutter 422 b with the non-adhesive surface 427 of the adhesive tape 427.
b, a piece of tape piece 428 having a predetermined length is cut from the adhesive tape 427. Then, as shown in FIG. 11, the cutter 422b of the cutting section 422 is retracted, and the feeding chuck section 422a of the cutting section 422 is opened.

The cutter 422b of the cutting section 422 is abutted against the non-adhesive surface 427b of the adhesive tape 427 by applying a slight tension to the adhesive tape 427 adhered to the tape piece holder 423 to cut and form. This is for increasing the adhesive force of the tape piece 428 to the tape piece holder 423.
Conversely, the cutter 422b of the cutting section 422 is
7, the tape piece holder 42
Since a strong tension is applied to the adhesive tape 427 adhered to the tape piece 3, the tape piece 428 to be cut and formed may be separated from the tape piece holder 423. In addition, the feeding chuck 422a of the cutting section 422 is closed and the adhesive tape 427 is sandwiched until the cutting of the adhesive tape 427 by the cutter 422b of the cutting section 422 is completed, because the tape roll 426 is pulled by the tension applied to the adhesive tape 427. This is to prevent the adhesive tape 427 from being unnecessarily fed out.

As a result, the cut tape piece 428 is formed.
Is adhered to the tape piece holder 423 to form an adhesive surface 428a.
Is stretched toward the wire L on a vertical plane parallel to the axis of the wire L.

The above-described cutting of the tape piece 428 is performed by securing a small operation area of the cutting section 422 and the tape piece holder 423, but the tape piece 428 is retracted from the drawing section 41 during the operation of the above-described drawing section 41. Can be advanced simultaneously at the position.

Next, the tape piece 428 is wound around the wire L.

That is, as shown in FIG.
The tape piece 42 stretched on the tape piece holder 423 with
8, the non-adhesive surface 428b is pressed to release the tape piece 428 from the tape piece holder 423. Then, as shown in FIG. 13, the winding part 424 is advanced toward the wire L,
The wire L is sandwiched between the upper piece 424aa of the holder 41 and the free end 424ba of the leaf spring 424b, and the wire L is covered with a tape piece 428 and wound. Thereafter, as shown in FIG. 14, the winding part 424 is retracted from the wire L, and the winding auxiliary part 4
25 is advanced toward the wire L and the tape piece 428, and the wire L and the tape piece 428 are inserted between the upper leaf spring 425 a and the lower leaf spring 425 b of the winding assisting part 425, and the tape piece 428 to the wire L is inserted. To ensure the winding. Then, as shown in FIG. 15, the winding auxiliary portion 425 is retracted from the wire L,
The tape piece holder 423 is moved to the wire L side.

Since the adhesive surface for stretching the tape piece 428 to the tape piece holder 423 is linear and small depending on the shape of the tape piece holder 423, the tape piece 428 can be easily detached from the tape piece holder 423. Done.

In the winding of the tape piece 428, 424aa of the holder 41 of the winding portion 424 and the winding portion 4
The tape piece 428 is covered on one side surface of the wire L by the free end 424ba of the 24 leaf springs 424b. afterwards,
Upper piece 424aa and leaf spring 424b of holder 41 moving forward
The tape 428 is put on the upper and lower surfaces of the wire L by the horizontal portion 424bb, and is pressed and bonded. Then, as shown in FIG. 17, the upper piece 424a of the holder 41 which is further advanced.
A tape piece 428 whose horizontal portion 424bb of the leaf spring 424b is elongated downward is pressed and bonded to a.

When the winding portion 424 is retracted, FIG.
As shown in FIG.
While peeling off the tape 8, the winding end 428 c of the tape piece 428 is pulled, and the vertical portion 424 bc of the leaf spring 424 b presses and bonds the tape piece 428 to the other side surface of the wire L. Then, when the winding portion 424 further retreats, the winding terminal 428c of the tape piece 428 is bonded to the upper surface of the wire L while the 424aa of the holder 41 peels off the tape piece 428 as shown in FIGS. It is laminated and adhered on the tape piece 428.

When the winding assisting portion 425 moves forward, the free end 425a of the upper leaf spring 425a is moved as shown in FIG.
a is pressed and slid on the winding terminal 428c laminated and adhered on the tape piece 428 adhered to the upper surface of the wire L. Then, as shown in FIG. 22, the upper leaf spring 425a and the lower leaf spring 425
b, the wire L and the tape piece 428 are sandwiched between them, and the vertical piece 512 of the upper leaf spring 425a presses the tape piece 428 adhered to one side of the wire L, and the horizontal part 513 of the upper leaf spring 425a. A tape piece 428 adhered to the upper surface of the wire L,
Press the winding terminal 428c.

When the winding part 424 and the winding auxiliary part 425 are moved forward and backward, the elasticity of the leaf spring 424b, the upper leaf spring 425a, and the lower leaf spring 425b is effectively used.
24, it is also possible to add a subtle elevation of the winding auxiliary part 425.

As a result, the tape piece 428 is finely wound around the wire L, and no unnecessary stress or the like is applied during the winding, so that the wire L is securely and accurately bound. .

Further, as the operation area of the winding section 424 and the winding auxiliary section 425, it is sufficient to secure a slight horizontal movement area.

After the binding of the wire L is completed, the cutting section 422 and the tape piece holder 423 are moved upward as shown in FIG.

Next, an insulating paper 434 is bonded to the bound tap T with an insulating portion 43.

That is, as shown in FIGS. 24 and 25, the support arm 431 moves from the base end side of the tap T to the direction in which the tap T is pulled out. The insulating paper 434 is pulled out by the chuck portion 432 with the adhesive surface 434a to which the adhesive is applied facing the insulating paper 434, and is covered with the tap T. Thereafter, the chuck portion 432 is opened to release the insulating paper 434. Then, as shown in FIG. 26, the bonding arm 433 is brought close to the support arm 431 so that the insulating paper 434 is sandwiched therebetween.
And the non-adhesive surface 434 b of the insulating paper 434 is heated and pressed by the adhesive roll 433.

As a result, the insulating paper 434 is firmly adhered so as to cover the tap T.

As described above, in addition to the illustrated embodiment, it is also possible to provide a winding device used for winding large and small wires L for other coils.

[0065]

As described above, the tap forming mechanism of the winding device according to the present invention is formed by moving the binding portion and the insulating portion in a certain direction in conjunction with the drawing portion, the binding portion and the insulating portion. There is an effect that a highly accurate tap can be automatically formed.

Further, since the draw-out portion, the binding portion, and the insulating portion are compactly assembled, they can be manufactured inexpensively and easily, and have the effect of reducing the size of the device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a tap forming mechanism of a winding device according to the present invention.

FIG. 2 is a detailed enlarged perspective view of a main part of FIG.

FIG. 3 is a perspective view showing an operation state following FIG. 2;

FIG. 4 is a perspective view showing an operation state following FIG. 3;

FIG. 5 is a perspective view showing an operation state following FIG. 4;

FIG. 6 is an overall perspective view showing an operation state following FIG. 1;

FIG. 7 is a detailed enlarged perspective view of another main part of FIGS. 1 and 6;

FIG. 8 is a side view showing the operation of FIG. 7;

FIG. 9 is a side view showing the operation following FIG. 8;

FIG. 10 is a side view showing the operation following FIG. 9;

FIG. 11 is a side view showing the operation following FIG.

FIG. 12 is a side view showing the operation following FIG. 11;

FIG. 13 is a side view showing the operation following FIG.

FIG. 14 is a side view showing the operation following FIG.

FIG. 15 is a side view showing the operation following FIG. 14;

FIG. 16 is a side view showing the operation following FIG.

17 is an enlarged sectional view of a main part of FIG.

FIG. 18 is an enlarged cross-sectional view of a main part in an operating state during the transition from FIG. 13 to FIG. 14;

FIG. 19 is a cross-sectional view showing the operation following FIG. 18;

FIG. 20 is a sectional view showing the operation following FIG. 19;

FIG. 21 is a sectional view showing the operation following FIG. 20;

FIG. 22 is a sectional view showing the operation following FIG. 21.

FIG. 23 is an overall perspective view showing an operation state following FIG. 6;

FIG. 24 is a detailed enlarged perspective view of still another main part of FIGS. 1, 6, and 23;

FIG. 25 is a perspective view showing an operation following FIG. 24.

FIG. 26 is an enlarged sectional view showing the operation following FIG. 24.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 supply mechanism 2 winding mechanism 4 tap forming mechanism 41 drawing section 411 drawing roller 412 narrowing roller 42 binding section 422 cutting section 422a feeding chuck section 422b cutter 423 tape piece holder 424 winding section 424a guide 424b leaf spring 425 winding assist Part 427 Adhesive tape 427a Adhesive surface 427b Non-adhesive surface 428 Tape piece 428a Adhesive surface 428b Non-adhesive surface 43 Insulating part 432 Chuck part 433 Adhesive roller L Wire rod T Tap

Claims (8)

(57) [Claims] 1. A drawer which is provided between a supply mechanism for supplying a wire and a winding mechanism on which the wire is wound, draws the wire in a direction orthogonal to a feed direction of the wire, and narrows a wire drawing base end. And a binding portion that advances and retreats in a direction perpendicular to the wire drawing direction and binds the wire drawing base end with an adhesive tape, and a wire drawing base end that advances and retreats from the wire drawing base end in the wire drawing direction. A tap forming mechanism for a winding device, comprising: a drawer portion including an insulating portion for bonding insulating paper to a drawer portion. 2. The tap forming mechanism of the winding device according to claim 1, wherein the draw-out portion is drawn out by a draw-out roller on which a wire can be detachably attached and which is moved in a direction orthogonal to a feed direction of the wire by hanging the wire. And a squeezing roller for guiding a change in the direction of the wire to be drawn out and narrowing the drawn-out base end of the drawn wire. 3. The tap forming mechanism of the winding device according to claim 1, wherein the binding unit includes a cutting unit that feeds the adhesive tape from the tape roll and cuts the adhesive tape into a fixed length, and a tape piece cut from the adhesive tape. A tape piece holder stretched on a surface parallel to the axial direction of the wire so that the adhesive surface faces the wire,
A tap forming mechanism for a winding device, comprising: a winding portion that presses a tape piece stretched on a tape piece holder from a non-adhesive surface side, detaches the tape piece from the tape piece holder, presses the piece with elastic pressure, and winds the wire around a wire. 4. The tap forming mechanism of a winding device according to claim 3, wherein the cutting portion is capable of holding an adhesive tape and being detachable, and is capable of reciprocating at an interval corresponding to a cutting length of a tape piece from the adhesive tape. And a cutter for cutting the adhesive tape at a fixed position. 5. The tap forming mechanism of the winding device according to claim 3, wherein the tape piece holder sticks the tape piece before cutting the tape piece from the adhesive tape by the cutting section, and the tape section attaches the tape piece. A tap forming mechanism for a winding device, comprising two parallel cylinders or cylinders that move synchronously with the feeding of a tape. 6. The tap forming mechanism of the winding device according to claim 3, wherein the elastic force of the winding portion presses the tape piece against the wire material both in advancing and retreating with respect to the wire material in the winding portion. A tap forming mechanism for a winding device, wherein the tap forming mechanism is formed by a leaf spring having a bent shape. 7. The tap forming mechanism of the winding device according to claim 3, wherein at least a terminal end of the tape piece wound on the wire is pressed by elastic force and wound on the wire separately from the winding portion. A tap forming mechanism for a winding device, comprising a winding auxiliary portion. 8. The tap forming mechanism of the winding device according to claim 1, wherein the insulating portion includes two insulating papers coated with an adhesive and a drawing portion including a drawing base end of the wire on both sides. 1. A tap forming mechanism for a winding device, comprising: a chuck portion for sandwiching and covering a wire; and a bonding roller for bonding the insulating paper covered with the wire by heating and pressing.