JP2995162B2 - Taping method and device for coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil taping method and an apparatus for winding an adhesive tape on a coil bobbin such as an electromagnet, a choke coil, and a transformer for protection, insulation, and ensuring a creepage distance.

[0002]

2. Description of the Related Art As shown in FIG. 10, as an adhesive tape used for protection, insulation, creepage distance and the like of a transformer 1, a creepage distance is provided on a side portion of a coil 3 wound around a coil bobbin 2. Creeping tape 4 for securing
There is an interlayer tape 5 or an outer tape 6 wound around or between the coil 3 and the creeping tape 4.

Japanese Utility Model Publication No. 2-38435 discloses an apparatus for taping a creeping tape 4, an interlayer tape 5, or an exterior tape 6.

In the coil taping device described in this publication, the tip end of an adhesive tape pulled out on an elastic pressing portion is pushed up by an air cylinder with respect to a coil bobbin mounted on one bobbin shaft. By sticking it on the lower surface, then lowering the elastic pressing part and rotating the bobbin shaft, the adhesive tape is wound around the coil bobbin while being pulled out from the tape roll through the tape pulling mechanism, and finally elastic pressing While rotating the head plate on which the head, the air cylinder, the tape roll, and the tape pull-out mechanism are mounted, the cutter mounted on the head plate is rotated to cut the adhesive tape and to move backward from the blade edge of the cutter. The cut adhesive tape is pressed onto the coil bobbin by a labeler provided integrally with the coil bobbin. .

[0005]

In this conventional taping device, one coil bobbin is fitted on one bobbin shaft, and taping for the next coil bobbin is performed while taping for each coil bobbin is completed. Therefore, there is room for improvement in terms of work efficiency.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has as its object to improve work efficiency when taping an adhesive tape on a coil bobbin.

[0007]

According to the first aspect of the present invention, an adhesive tape is attached to one side surface of two coil bobbins arranged at a predetermined interval, and the adhesive tape between the two coil bobbins is cut. At the same time, the cut end of the tape is attached to the opposite surface of both coil bobbins from one side, and both coil bobbins are integrally rotated by 180 °, so that the adhesive tape is wound around the opposite side of both coil bobbins while being pulled out against the tape tension. This is a taping method for a coil in which the adhesive tape between the coil bobbins is cut in such a manner, and the cut end of the tape is stuck to the opposing surfaces of the coil bobbins from opposite sides.

Then, the two coil bobbins are integrated into one
The adhesive tape is wound around both coil bobbins by rotating by 80 °, and the adhesive tape between one side and the other side of both coil bobbins is cut. At this time, the beginning and end of the adhesive tape are simultaneously attached to both coil bobbins. So that The winding of the adhesive tape on one of the coil bobbins is completed by the inversion operation of 180 ° and the cutting operation before and after that,
At that time, the winding start end of the adhesive tape has been attached to the other coil bobbin. The position at which the adhesive tape is to be wound on the coil bobbin is determined by the set interval between the coil bobbins.

According to a second aspect of the present invention, an adhesive tape is attached to one side surface of two coil bobbins arranged at a predetermined interval while receiving a biasing force in a direction approaching each other, and a gap between the two coil bobbins is provided. By cutting the adhesive tape and pressing the coil bobbin interval open against the urging force, the cut tape end is attached to the opposing surface of both coil bobbins from one side, and both coil bobbins are integrally rotated by 180 ° so that both coil bobbins are rotated. Along the opposite side, apply adhesive tape so that it is wound around the tape while pulling it out against the tape tension, cut the adhesive tape between both coil bobbins, and push open the coil ends while pushing the coil bobbin interval against the urging force. This is a coil taping method for attaching the coil bobbin to the opposite surface from the opposite side.

Immediately after the adhesive tape between the coil bobbins is cut, the coil bobbins are pushed and opened at intervals between the coil bobbins against a biasing force in a direction in which the coil bobbins approach each other.
By attaching the wound start end and wound end of the cut adhesive tape to the opposing surfaces of both coil bobbins from one side and the other side, the winding start end and end of winding are adhered to the opposing surfaces of both coil bobbins with sufficient pressing force.

According to a third aspect of the present invention, there is provided a bobbin rotating mechanism for integrally rotating two bobbin shafts into which two coil bobbins are fitted at a predetermined interval by 180 °, and the bobbin. A tape supply mechanism that supplies the adhesive tape wound by both coil bobbins while applying tension to both coil bobbins rotated by a rotating mechanism, and a tape end inserted between both coil bobbins to cut the adhesive tape and cut the cut tape end. A coil taping device comprising: a tape cutting mechanism that is attached to opposing surfaces of both coil bobbins.

Then, the two coil bobbins are integrally rotated by 180 ° by the bobbin rotating mechanism,
Adhesive tape supplied while applying tension from the tape supply mechanism is wound around both coil bobbins, and the tape cutting mechanism cuts the adhesive tape between one side and the other side of both coil bobbins. Attach the beginning and end of the tape at the same time.
The winding operation of the adhesive tape on one coil bobbin is completed by the inversion operation of 0 ° and the cutting operation before and after the inversion operation, and the winding start end of the adhesive tape is affixed to the other coil bobbin.

According to a fourth aspect of the present invention, there is provided a coil taping device according to the third aspect, wherein the bobbin rotating mechanism is provided with a rotary plate rotated by one rotary shaft and two rotary plates provided on the rotary plate. A bobbin shaft provided with variable inter-axis distance variable means, and biasing means provided on the variable inter-axis distance means for biasing the two bobbin shafts toward each other; It is.

The adhesive tape between the two coil bobbins is cut by the tape cutting mechanism, and the variable coil bobbin interval is pushed open by the inter-axis distance changing means against the urging force of the urging means. While receiving the force, the adhesive tape is pasted immediately after cutting so that the winding start end and the winding end are pressed against the opposing surfaces of both coil bobbins, respectively.

According to a fifth aspect of the present invention, in the taping device for a coil according to the fourth aspect, the inter-axis distance variable means adjusts an initial inter-axis distance set between the two bobbin shafts. Including.

The screw of the means for varying the distance between the shafts
By adjusting the initial inter-axis distance set between the bobbin shafts, the cutting tape length attached to each coil bobbin fitted to each bobbin shaft is adjusted according to the size of the coil bobbin, etc. When the pressure-sensitive adhesive tape is a creeping tape, the winding start end and the winding end are prevented from overlapping or creating a gap. When the adhesive tape is an exterior tape, the winding start end and the winding end are overlapped with an appropriate length.

According to a sixth aspect of the present invention, in the coil taping device according to any one of the third to fifth aspects, the tape supply mechanism sandwiches and guides a portion where the adhesive tape is drawn from the tape roll of the adhesive tape. Tape guide means, and a tape roll holding means for holding the tape roll in a direction of pressing the tape roll against the tape guide means, and the tape roll holding means is rotatable by a shaft provided in parallel with the tape guide means. A lever which is axially supported by one side and engages one side of the tape roll, a spring which urges the lever toward the tape guide means, a spacer which is provided at the tip of the lever and abuts against the inner peripheral surface of the tape roll, And a guide provided on the opposite side of the lever via the spacer to engage with the other side of the tape roll.

Then, the tape roll is engaged with the spacer between the lever and the guide such that the tip of the guide is relatively inserted into the inner diameter hole of the tape roll. The tape roll once engaged with the spacer is locked by the lever and the guide and does not fall off, but is urged toward the tape guiding means by a spring.

According to a seventh aspect of the present invention, there is provided a coil taping device according to any one of the third to sixth aspects, wherein the tape cutting mechanism cuts an adhesive tape;
A pressing member is provided along the both sides of the cutter and slightly behind the cutting edge of the cutter and affixes the cut end of the tape to the opposing surface of the coil bobbin.

Immediately after the adhesive tape is cut by the cutter, the winding start end and the winding end of the cut adhesive tape are attached to the opposing surfaces of the respective coil bobbins by pressing members on both sides of the cutter which move in the same direction as the cutter. . Further, when the bobbin rotation mechanism has the inter-axis distance variable means and the urging means, the winding can be performed with an appropriate pressing force set by the urging means without strictly setting the thickness of the pressing member of the tape cutting mechanism. A start end and a winding end can be attached to each coil bobbin.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS. The creeping tape 4 shown in FIG. 10 will be described as an adhesive tape to which the present invention is applied. The creeping tape 4 is called a space tape, a margin tape, a barrier tape, or the like.

As shown in FIG. 3, a controller 12 is fixedly mounted on a mounting board 11. This controller
Reference numeral 12 includes a power switch 13, a start switch 14, and the like. A mounting panel 15 is fixed on one side of the mounting substrate 11.

A body 18 of an electric motor 17 with a speed reducer is fixed to the mounting panel 15 by four stays 16, and a motor shaft 19 protruding from the body 18 is provided with a rotation angle detecting plate.
A proximity sensor 22 fixed to the mounting panel 15 is provided below the rotation angle detection plate 21 so as to face each other.

The rotation angle detection plate 21 has an outer peripheral edge 180.
° is provided with a notch, the proximity sensor 22
The notch is detected, and the electric motor 17 is driven by the controller 12 so that the motor shaft 19 rotates by 180 ° and then stops.

The motor shaft 19 is connected by a coupling 23 to a rotating shaft 25 rotatably mounted on the mounting panel 15 via a bearing 24.

The rotating plate 32 of the bobbin rotating mechanism 31 shown in FIGS. 1 and 2 is integrally fitted to the rotating shaft 25 by a boss 33 integrally formed at the center on the back surface side. . The bobbin rotating mechanism 31 is configured such that two bobbin shafts 34 protruding from the surface side of the rotating plate 32 can move in the direction of approaching and separating from each other, and can be integrally rotated by 180 ° by the rotating plate 32. It is provided in. Each of these bobbin shafts 34 has
The coil bobbin 2 is fitted with a set interval. The details of the bobbin rotation mechanism 31 will be described later.

As shown in FIGS. 1 and 2,
Below the bobbin rotation mechanism 31, a tape supply mechanism 35 is disposed. This tape supply mechanism 35 is a bobbin rotation mechanism.
The creeping tape 4 serving as an adhesive tape wound by the coil bobbins 2 is supplied to the coil bobbins 2 rotated by 31 while applying tension thereto. Details of the tape supply mechanism 35 will be described later.

Further, as shown in FIGS. 1 and 2, a tape cutting mechanism 36 is disposed beside the bobbin rotating mechanism 31. The tape cutting mechanism 36 is inserted between the coil bobbins 2 to cut the creeping tape 4 and affixes the cut tape ends to the opposing surfaces of the coil bobbins 2. Details of the tape cutting mechanism 36 will be described later.

As shown in FIGS. 1, 2 and 4,
The bobbin rotation mechanism 31 is provided with an inter-axis distance varying means 37 that allows the inter-axis distance between two bobbin shafts 34 provided on the rotary plate 32 rotated by the rotary shaft 25 to be variable.

As shown in FIG. 4, the inter-axis distance changing means 37 includes a pair of block-shaped moving bodies 41 integrally formed with the bobbin shafts 34 on the front surface of the rotating plate 32. The linear bearing 42 is provided so as to be movable in the contact and separation directions.

The linear bearing 42 includes a pair of left and right concave guide rails on the upper and lower portions of the rotary plate 32, respectively.
43 is a positioning plate 44 screwed to the surface of the rotating plate 32
1 (see FIGS. 1 and 2), fixed by screws 45 screwed from the back surface of the rotating plate 32, and integrally formed inside these concave guide rails 43 on the left and right portions of each moving body 41. A slider 48 attached to the back surface of the projected portion 46 by a screw 47 is slidably fitted.

The moving body 41 is formed by engaging a convex portion 49 formed on the inner edge of the concave guide rail 43 with a concave portion 50 formed on both side surfaces of the slider 48, or by using the concave guide rail 43 and the slider. Due to the structure in which a plurality of balls (not shown) are engaged between the 48 concave grooves, they do not fall off the rotating plate 32.

A spring engaging screw 51 is screwed to one side surface of the pair of moving bodies 41, respectively.
A tension coil spring 52 as an urging means is engaged with and extended by hook portions 53 at both ends thereof. The tension coil spring 52 biases the two bobbin shafts 34 in a direction approaching each other by biasing the pair of moving bodies 41 in a direction approaching each other.

On the other hand, between the pair of moving bodies 41, the rotating plate 32
Further, a pin-shaped spacer 54 protruding from the spacer 54 is interposed, and further, each moving body 41 is provided with screw holes 55 facing each other with the spacer 54 interposed therebetween. Each is screwed. These inter-axis distance adjusting screws 56 contact the spacer 54 to adjust the distance between the pair of moving bodies 41 and to adjust the initial inter-axis distance set between the two bobbin shafts 34.

Each of the screw holes 55 is provided with a driver insertion hole 57 of a larger diameter continuously.
The tip of the inter-axis distance adjusting screw 56 is protruded from the moving body 41 so as to engage with the spacer 54.

Each bobbin shaft 34 is formed in the shape of a square bar, and elastic members 58 such as rubber or resin are fitted into small holes penetrating between the side surfaces thereof. Are cut in such a manner as to slightly protrude from the side surface of the bobbin shaft 34. Therefore, both ends of the elastic member 58 are provided with appropriate retaining friction to the coil bobbin 2 fitted to each bobbin shaft 34, thereby preventing the coil bobbin 2 from falling off.

Next, as shown in FIGS. 2 and 3, a mounting plate 62 is fixed to the front surface of the mounting panel 15 via two stays 61, as shown in FIGS. As shown, a bracket 64 on one side is directly mounted on the mounting plate 62 by screws 63, and a square stay 65 is provided.
The brackets 67 on the other side are attached by screws 66 via the through holes. Tape pull-out shafts 68 and 69 are coaxially supported by these brackets 64 and 67, respectively.

As shown in FIG. 2, each tape pull-out shaft 6
8 and 69 are tape rolls 4a and 4 of two types of creeping tape 4.
Tape guide means 71 and 72 for holding and guiding a portion where each creepage tape 4 is drawn from b are provided.

The tape guide means 71 and 72 have a roller 73 whose stopper 73 is integrally fitted to each of the tape pull-out shafts 68 and 69, and the roller 74 whose axial movement is locked by the stopper 73 and the roller 74. The cylindrical portions 76 of the receiving flanges 75 that are integrally mounted with the receiving flanges 75 are rotatably fitted to the cylindrical portions 76 of the receiving flanges 75, respectively.
A cylindrical portion 78 of each of the 77 is axially movably fitted, and a compression coil spring 79 that receives the pressing flange 77 and presses it toward the flange 75 is fitted between the pressing flange 77 and the roller 74. Things.

Each of the compression coil springs 79 has a function of applying a load against pulling out by crimping each of the creeping tapes 4 drawn from the tape rolls 4a and 4b, thereby applying a tension to each of the creeping tapes 4. Have.

Tape roll holding means 81, 82 for holding the tape rolls 4a, 4b in the pressing direction are provided for the tape guide means 71, 72.

The tape roll holding means 81 and 82 are shown in FIG.
As shown in FIG. 2, a shaft 83 projects from the mounting plate 62 in parallel with the tape drawing shafts 68, 69 of the tape guiding means 71, 72, and the shaft 83 is engaged with the outer surfaces of the tape rolls 4a, 4b. A pair of levers 84 are rotatably fitted to respective bosses 85 integrally provided at the base ends thereof, and tape rolls 4a, 4b are screwed onto the distal ends of these levers 84 by screws 86. Spacers 87 are provided on the inner peripheral surfaces of the tape rolls 4a and 4b, and guides 88 engaging with the inner surfaces of the tape rolls 4a and 4b are integrally formed on the opposite side of the lever 84 via the spacers 87. Installed.

Further, a tape guiding means is provided from the mounting plate 62.
Screw rods projecting parallel to the tape pull-out shafts 68 and 69 of 71 and 72
A tension coil spring 93 for urging the lever 84 toward the tape guide means 71, 72 is stretched between the screw 91 and the screw 92 screwed to the side surface of each lever 84, respectively.

Then, as shown in FIG. 5, the distal end of the guide 88 is relatively inserted into the inner diameter holes of the tape rolls 4a and 4b, so that the spacer 87 between the lever 84 and the guide 88 is provided.
Are engaged with the tape rolls 4a and 4b. Once the spacer 87
The tape rolls 4a and 4b engaged with the lever 84 and the guide 84
It is locked by 88 and does not fall off, tension coil spring
The tape is urged toward the tape guiding means 71 and 72 by the 93 and is held between the receiving flange 75 and the pushing flange 77.

Next, in the tape cutting mechanism 36, as shown in FIG. 6, an L-shaped member 101 is fixed to the mounting panel 15 by a screw 103 inserted in a vertical groove 102 so as to be capable of vertical movement adjustment. A cylinder mounting plate 104 protrudes horizontally via the L-shaped member 101, and a flat rectangular air cylinder 105 is mounted on the upper surface of the tip of the cylinder mounting plate 104. A slider 106 is slidably fitted on the upper surface via a guide rail (not shown), and an air cylinder 105 is attached to a front plate 107 of the slider 106.
The piston rod 108 protruding from is connected.

Pneumatic source (air compressor) not shown
A filter 109 and an electromagnetic switching valve 110 mounted on the back of the mounting panel 15 shown in FIG. 3 are interposed in the air hose piped from the air cylinder 105 to the air cylinder 105. 110 is operated, the air pressure supplied to the air cylinder 105 is controlled by the electromagnetic switching valve 110, and the piston rod 108 reciprocates or stops.

A cutter mounting plate 112 is integrally provided on the slider 106 with screws 111, and a cutter holding plate 113 is mounted on a tip end of the cutter mounting plate 112 with screws 114, and the cutter mounting plate 112 and the cutter holding plate 112 are attached. A cutter 115 for cutting the creeping tape 4 and pressing members 116 and 117 provided along both upper and lower sides of the cutter 115 are fitted between the cutter 115 and the screw 115 screwed from the cutter holding plate 113. By means of 118, the cutter 115 and the pressing members 116 and 117 are fixed.

The pressing members 116 and 117 are provided slightly to the rear of the cutting edge 119 of the cutter 115, and have a function of pressing the tape end cut by the cutter 115 to the opposing surface of the coil bobbin 2 and sticking the same. A fluororesin suitable for the function, such as Lulon or Teflon (both trade names), is suitable in terms of material strength, low coefficient of friction, abrasion resistance, shape retention, and the like.

As shown in FIG. 1, the thickness of the pressing members 116 and 117 is such that the upper pressing member 116 is thinner, the lower pressing member 117 is thicker, and the center of the upper and lower bobbin shafts 34 is between the axes. The thickness t1 from the cutting edge 119 of the cutter 115 located at the level to the upper surface of the upper pressing member 116 is set to be equal to the thickness t2 from the cutting edge 119 of the cutter 115 to the lower surface of the lower pressing member 117. I have.

7 and 8, the tape cutting mechanism 36 cuts the creeping tape 4 between the coil bobbins 2 by the cutter 115 almost simultaneously with the cutter 115 in the same direction as the cutter 115. By pressing members 116 and 117 on both sides of the cutter that follow slightly from the rear side of 119, the winding start end 4s and the winding end 4e of the cut surface tape 4 are stuck on the opposing surface of each coil bobbin 2.

At this time, the pressing members 116 and 117 are inserted between the coil bobbins 2 so that the inter-axis distance varying means 37 is provided.
The coil bobbin interval which can be varied is pushed open against the urging force of the tension coil spring 52, so that the winding start end 4s and the winding end 4e of the creeping tape 4 immediately after cutting are opposed to each other while receiving the urging force. It can be affixed so as to rub against each surface.

At this time, even if the thicknesses of the pressing members 116 and 117 located above and below the cutter 115 are not strictly set, the winding start end 4s and the winding end 4e can be formed with an appropriate pressing force set by the tension coil spring 52. Can be attached to each coil bobbin 2.

At this time, the length of the winding start end 4s and the winding end 4e attached to each coil bobbin 2 are two coil bobbins 2
Is determined by the interval. For example, when the coil bobbin 2 is large, the distance between the coil bobbins 2 is adjusted to be increased.

That is, each moving body of the inter-axis distance varying means 37
The tip protrusion amount of each of the inter-axis distance adjusting screws 56 screwed to the respective 41 is adjusted equally, and the respective inter-axis distance adjusting screws 56 are adjusted.
Can be adjusted by engaging the leading end of the coil bobbin with the spacer 54, so that the initial distance between the two bobbin shafts 34 can be adjusted. Can be adjusted according to the size of the coil bobbin 2 and the like.

Thus, when the pressure-sensitive adhesive tape is the creeping tape 4, the winding start end 4s and the winding end 4e are prevented from overlapping or forming a gap. When the adhesive tape is the interlayer tape 5 or the exterior tape 6, the winding start end 4s and the winding end
4e should overlap with an appropriate length.

Next, the overall operation of the illustrated embodiment will be described with reference to FIG. As shown in FIGS. 3 and 6, a switch box 121 is directly attached to the upper part of the mounting panel 15.
Since a start button 122 is provided on the upper surface of 121, every time an operator sets a new coil bobbin 2 on the bobbin shaft 34, the operator operates the start button 122 to start work.

As shown in FIG. 9 (A), when the operation is first started or when a new tape roll is exchanged and set, the operator manually pulls out the creeping tape 4 from the tape supply mechanism 35, and The adhesive-applied surface of the creeping tape 4 is stuck over one side surface of the two coil bobbins 2a and 2b arranged vertically. At this time, both coil bobbins 2a, 2b
While receiving the urging force in the direction approaching each other by the tension coil spring 52, the spacer 54 and the center distance adjusting screw
They are arranged at intervals set by 56.

As shown in FIG. 9 (B), a cutter 115 and pressing members 116, 117 are inserted between the bobbins from one side of the coil bobbins 2a, 2b, and a creeping tape is provided between the coil bobbins 2a, 2b. 4 and immediately after the cutting, the pressing members 116 and 117 push the gap between the coil bobbins 2a and 2b open against the urging force of the extension coil spring 52, and the winding start end 4s of the cut surface tape 4 is opened. The coil bobbin 2 and the winding end corresponding part 4e 'are pressed by a sufficient pressing force.
Attach to opposite sides of a and 2b so that they are rubbed simultaneously from one side. At this time, the pressing members 116 and 117 come into contact with the non-applied surface of the creeping tape 4 on the opposite side to the adhesive applied surface.

As shown in FIG. 9C, the creeping tape 4 'having the winding end corresponding portion 4e' attached to the coil bobbin 2b located on the upper side is unnecessary, and thus is peeled off.

As shown in FIGS. 9 (C), 9 (D) and 9 (E), when the start button 122 is pressed and turned on, the rotating plate 32 of the bobbin rotating mechanism 31 rotates 180 ° counterclockwise and stops. . The two bobbin shafts 34 rotate integrally with the rotary plate 32 without rotating with respect to the rotary plate 32 and are turned upside down.
Similarly, the two coil bobbins 2a and 2b are also integrally rotated counterclockwise by 180 ° and turned upside down.

As a result, as shown in FIG. 9 (E), the creeping tape 4 pulled out from the tape supply mechanism 35 is
The coil bobbins 2a and 2b are wrapped so as to follow the opposite sides of the coil bobbins 2a and 2b, and stop at the positions of the side surfaces of the coil bobbins 2a and 2b. At this time, tension is applied to the creeping tape 4 by the clamping force between the receiving flange 75 and the pushing flange 77 of the tape supply mechanism 35, and the tape tension causes the creeping tape 4 to be applied to the side surfaces of the coil bobbins 2a and 2b. The adhesive-coated surface can be securely attached.

As shown in FIG. 9 (F), the air cylinder 105 is operated, and the cutter 115 and the pressing member of the tape cutting mechanism 36 are disposed between the opposite sides of the coil bobbins 2a and 2b.
116, 117 are cut to cut the creeping tape 4 between the opposite sides of the coil bobbins 2a, 2b, and immediately after the cut, the pressing member is pressed against the urging force of the tension coil spring 52.
While the interval between the coil bobbins 2a and 2b is pushed open by 116 and 117, the winding start end 4s and the winding end 4e of the cut surface tape 4 are cut.
Are adhered to the opposing surfaces of both coil bobbins 2a, 2b simultaneously from the opposite sides with a sufficient pressing force.

As a result, the one coil bobbin 2a is in a completed state in the case of a single winding in which the creeping tape 4 is wound around the entire circumference and the winding start end 4s and the winding end 4e abut against each other without a gap.

As shown in FIG. 9G, the coil bobbin 2a in the completed state is detached from the bobbin shaft 34 so as to be pulled out, and is transferred to a coil winding device or the like.

After the step shown in FIG. 9G, the process returns to the step shown in FIG.
And a similar taping operation is performed on the coil bobbin 2b this time.

In the case where the creeping tape 4 is wound around the same coil bobbin 2a or 2b more than twice, FIG.
Returning from the step shown in (F) to the step shown in FIG. 9C, the same taping operation is repeated a plurality of times.

As described above, the bobbin rotation mechanism 31
The coil bobbins 2a and 2b are integrally rotated by 180 ° so that the creeping tape 4 supplied while being tensioned from the tape supply mechanism 35 is attached to the coil bobbins 2a and 2b while being wound around the coil bobbins 2a and 2b. The creeping tape 4 between one side and the opposite side of both coil bobbins 2a, 2b is cut by 36, and the winding start end 4s and the winding end 4e of each creeping tape 4 are simultaneously attached to both coil bobbins 2a, 2b. .

When the winding operation of the creeping tape 4 on one coil bobbin 2a is completed by the 180 ° inversion operation and the cutting operation before and after the 180 ° inversion operation, the other coil bobbin 2b
The winding start end 4s of the creeping tape 4 can be pasted on the tape.

By setting the distance between the two coil bobbins 2a and 2b by adjusting the distance adjusting screw 56, the winding start end of the creeping tape 4 with respect to the coil bobbins 2a and 2b is set.
4s and the winding end 4e can be accurately positioned.

Next, although not shown, another embodiment included in the present invention will be described.

The illustrated embodiment has two bobbin shafts 34.
Are biased in a direction approaching each other by a tension coil spring 52, and the distance between the two bobbin shafts 34 is increased with insertion of the cutter.
The invention according to claim 3 is not limited to the two-axis moving type, but also includes one in which two bobbin shafts 34 are fixed at predetermined intervals by the rotating plate 32 of the bobbin rotating mechanism 31. .

Although the illustrated embodiment has been described with respect to the case where the creeping tape 4 is directly wound around the coil bobbin 2, the present invention is not limited to this straight winding, and FIG.
When the interlayer tape 5 is wound around the creepage tape 4 and the coil 3 already wound around the coil bobbin 2, when the creepage tape 4 is wound around the interlayer tape 5, the outer tape is wound around the creepage tape 4 and the coil 3 6 is applied to any case of winding.

That is, the pressure-sensitive adhesive tape according to the present invention can be applied to any of the creeping tape 4, the interlayer tape 5, and the exterior tape 6. Also, the creeping tape 4 can be applied to a case where it is wound around only one side of the coil bobbin 2.

Further, the illustrated embodiment shows an example in which one coil bobbin 2 is fitted to one bobbin shaft 34, but the present invention is not limited to this one bobbin shaft. Instead, two or more coil bobbins 2 may be fitted to each bobbin shaft 34, respectively. In this case, the tape supply mechanism 35 supplies three or more adhesive tapes corresponding to the number of coil bobbins on one axis, and the tape cutting mechanism 36
Can be accommodated by providing a wide or a plurality of sets of cutters 115 and the like.

Finally, in the illustrated embodiment, the case where the adhesive tape is wound once around the coil bobbin 2 is shown. However, the present invention is not limited to this single winding, and the present invention is not limited thereto. This includes the case where the adhesive tape is wound two or more times.

[0076]

According to the first aspect of the present invention, the two coil bobbins are integrally rotated by 180.degree. So that the adhesive tape is wound on the opposite side, and between the one side and the opposite side of both coil bobbins. The adhesive tape is cut at the same time, and the winding start and end of the adhesive tape are simultaneously attached to both coil bobbins, so that the 180 ° reversing operation and the cutting operation before and after the 180 ° turn the adhesive tape around one coil bobbin. At the time of completion, the winding start end of the adhesive tape is stuck to the other coil bobbin, so that the work can be continued continuously, and the taping work efficiency can be improved.

Further, the winding start end and the winding end of the adhesive tape can be stuck to the correct positions on the coil bobbin by the interval set between both coil bobbins.

According to the second aspect of the present invention, the two coil bobbins receive a biasing force in a direction approaching each other, and the pressure-sensitive adhesive tape immediately after cutting is cut while pushing and opening the coil bobbin interval against the biasing force. Since the winding start end and the winding end can be adhered to the opposing surfaces of both coil bobbins from one side and the opposite side, the winding start end and the winding end can be securely adhered to both coil bobbins with a sufficient pressing force.

According to the third aspect of the present invention, the two coil bobbins are integrally rotated by 180 ° by the bobbin rotating mechanism, so that the adhesive tape supplied while applying tension from the tape supplying mechanism can be used for both the bobbins. Attaching while wrapping around the coil bobbin, the tape cutting mechanism cuts the adhesive tape between one side and the other side of both coil bobbins, and simultaneously attaches the winding start end and winding end of the adhesive tape to both coil bobbins, so At the point when the winding of the adhesive tape on one coil bobbin is completed by the reversing operation and the cutting operation before and after it, the winding start end of the adhesive tape is stuck on the other coil bobbin, and taping work is continuously and efficiently performed one after another. Can be performed.

According to the fourth aspect of the present invention, the distance between the two bobbin shafts is made variable by the inter-axis distance varying means, and the biasing means attaches the two bobbin shafts in the direction in which they approach each other. Since the urging force is applied, the start and end of the winding of the adhesive tape immediately after the cutting can be securely adhered to the opposing surfaces of the two coil bobbins while the coil bobbin interval is pushed open by the tape cutting mechanism against the urging force.

According to the fifth aspect of the present invention, the inter-axis distance changing means includes an initial inter-axis distance adjusting screw set between the two bobbin shafts. By adjusting the shaft interval, the length of the cutting tape attached to each coil bobbin fitted to each bobbin shaft can be accurately adjusted according to the size of the coil bobbin, for example, when the adhesive tape is a creeping tape, the The coil bobbin can be accurately attached to each coil bobbin such that the winding start end and the winding end face each other without overlapping and without any gap.

According to the sixth aspect of the present invention, the tape roll holding means includes a lever engaged with one side surface of the tape roll, a spacer abutting on the inner peripheral surface of the tape roll, and the other side surface of the tape roll. Since the guide has a mating guide, the tape roll can be easily engaged with the spacer between the lever and the guide by inserting the tip of the guide relatively into the inner diameter hole of the tape roll. The drop of the tape roll once engaged with the spacer can be reliably prevented by the lever and the guide, and the tape roll can be urged toward the tape guide means by a spring to be securely held by the tape guide means.

According to the seventh aspect of the present invention, the tape cutting mechanism has a cutter for cutting the adhesive tape, and a pressing member provided along the both sides of the cutter and slightly behind the cutting edge of the cutter. Therefore, immediately after the cutting operation by the cutter, the winding start and end of the cut adhesive tape can be securely adhered to the opposing surfaces of the coil bobbins by the pressing members on both sides of the cutter.

Further, by combining the tape cutting mechanism with the inter-axis distance varying means and the urging means of the bobbin rotating mechanism, the pressing member of the tape cutting mechanism can be attached without setting the thickness strictly. The winding start end and winding end of the adhesive tape can be attached to each coil bobbin with an appropriate pressing force set by the biasing means, so that it is possible to easily cope with a case where the coil bobbin is changed to a coil bobbin having a different size.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a coil taping device according to the present invention.

FIG. 2 is a side view of the taping device.

FIG. 3 is a side view of a drive unit and a control unit of the taping device.

FIG. 4 is an exploded perspective view showing an inter-axis distance varying means and an urging means in the bobbin rotating mechanism of the taping device.

FIG. 5 is a perspective view showing a tape supply mechanism of the taping device.

FIG. 6 is a front view showing the tape cutting device of the taping device.

FIG. 7 is a perspective view showing a state of the taping device before cutting the tape.

FIG. 8 is a perspective view showing a state after the tape is cut by the taping device.

FIG. 9 is an explanatory view showing one embodiment of a coil taping method according to the present invention.

FIG. 10 is a cross-sectional view showing a taped transformer.

[Explanation of symbols]

 2 Coil bobbin 4 Creeping tape as adhesive tape 4a, 4b Tape roll 25 Rotating shaft 31 Bobbin rotating mechanism 32 Rotating plate 34 Bobbin shaft 35 Tape supply mechanism 36 Tape cutting mechanism 37 Interaxial distance variable means 52 Tension coil spring as urging means 56 Screw 71, 72 Tape guide means 81, 82 Tape roll holding means 83 Shaft 84 Lever 87 Spacer 88 Guide 93 Spring 115 Cutter 116 Pressing member 119 Cutting edge

Claims (7)

(57) [Claims] 1. An adhesive tape is attached to one side of two coil bobbins arranged at a set interval, and the adhesive tape between the two coil bobbins is cut, and the cut end of the tape is placed on the opposite surface of the two coil bobbins. The adhesive tape is attached from the side, and the two coil bobbins are rotated together by 180 ° so that the adhesive tape is wound around the opposite side of both coil bobbins while pulling it out against the tape tension, and the adhesive tape between both coil bobbins is cut. A coil taping method, wherein the cut tape ends are attached to opposing surfaces of both coil bobbins from opposite sides. 2. An adhesive tape is attached to one side surface of two coil bobbins arranged at a predetermined interval while receiving an urging force in a direction approaching each other, cutting the adhesive tape between the two coil bobbins and applying an urging force. Attaching the cut end to the opposite surface of both coil bobbins from one side while pushing and opening the coil bobbin interval against the coil bobbin, and turning both coil bobbins together by 180 ° to tape the adhesive tape over the opposite side of both coil bobbins Paste to wind around while pulling out against the tension, cut the adhesive tape between both coil bobbins, push the gap between coil bobbins against the urging force and open the cut tape end from the opposite side to the opposing surface of both coil bobbins A taping method for a coil, characterized in that it is attached. 3. A bobbin rotation mechanism for integrally rotating two bobbin shafts into which two coil bobbins are fitted at a predetermined interval by 180 °, and both bobbins rotated by the bobbin rotation mechanism. A tape supply mechanism that supplies the adhesive tape wound by both coil bobbins to the coil bobbin while applying tension, and a tape feeding mechanism that is inserted between both coil bobbins to cut the adhesive tape and affix the cut tape ends to the opposing surfaces of both coil bobbins. A taping device for a coil, comprising a tape cutting mechanism. 4. A bobbin rotating mechanism comprising: a rotating plate that is rotated by one rotating shaft; an inter-axis distance varying means provided on the rotating plate, the inter-axis distance between two bobbin shafts being variable; 4. A taping device for a coil according to claim 3, further comprising an urging means provided on said inter-axis distance varying means for urging the two bobbin shafts in a direction approaching each other. 5. The coil taping device according to claim 4, wherein the inter-axis distance changing means includes a screw for adjusting an initial inter-axis distance set between the two bobbin shafts. 6. A tape supply mechanism comprising: a tape guide means for sandwiching and guiding a portion of the adhesive tape from which the adhesive tape is drawn out; and a tape roll holding means for holding the tape roll in a direction in which the tape roll is pressed against the tape guide means. The tape roll holding means comprises a lever rotatably supported by a shaft provided in parallel with the tape guide means and engaging with one side of the tape roll, and moving the lever to the tape guide means side. It has a biasing spring, a spacer provided at the tip of the lever and in contact with the inner peripheral surface of the tape roll, and a guide provided on the opposite side of the lever and engaging with the other side of the tape roll via the spacer. The coil taping device according to any one of claims 3 to 5, wherein: 7. A tape cutting mechanism comprising: a cutter for cutting an adhesive tape; and a pressing means provided along both side surfaces of the cutter and slightly behind the cutting edge of the cutter to attach a cut tape end to an opposing surface of a coil bobbin. The coil taping device according to any one of claims 3 to 6, further comprising a member.