JP2001088994A - Winding device for strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automate the winding process of a strip regardless of the material of a pipe-like body forming a winding core. SOLUTION: In this winding device for winding a strip on a core by rotating the core, this device comprises a means for forming a self-winding end on the end of the strip and a means for nipping the self-winding end between the strip and the core. The self-winding end formed on the strip is nipped between the strip and the core, whereby the strip is wound so as not to loosing from the core.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for winding a band such as a tape or a ribbon, and more particularly to a method for winding a band-shaped separator and an electrode foil to form a capacitor or a battery. The present invention relates to a winding device for a belt-like body suitable for manufacturing an element of an electric component such as the above.

[0002]

2. Description of the Related Art In general, when an electric component such as a capacitor is manufactured, it is necessary to use a strip-shaped separator and an electrode foil wound in advance as elements of the electric component. In the case of a capacitor, it is sufficient that a separator as an insulator is interposed between a plurality of electrode foils, and these are wound concentrically into a layer to form a layered and miniaturized one. The electric component element is
After the electrodes are attached, the capacitors are obtained by being housed in a predetermined case. Conventionally, such a separator, and as a method of manufacturing an electrical component element by winding the electrode foil, winding the separator, and the electrode foil around the core having a slit, after winding,
There are things that pull out the core. The slit of the winding core is for holding a separator or the like, and is formed in parallel with a minimum interval from the leading end of the winding core, and has such a length that the entire width of the separator can be inserted. According to such a winding method, since the outer diameter of the separator or the like after winding can be reduced by winding on a thin winding core, a small capacitor element can be obtained.

On the other hand, in order to obtain an electric component element for a capacitor having a large electric capacity by winding a long and wide band-like body, it is advantageous not to use such a core having a slit. . Inserting a long and wide band-shaped separator into the slit of the core, rotating the core and winding it around the core, the relatively thin core bends due to its elasticity. Narrows. As a result, the strip is sandwiched between the slits and pinched, and when the core is pulled out from the wound element after the winding of the strip, it becomes difficult to remove the core. is there. Therefore, for example, Japanese Patent No. 2875359
Japanese Patent Laid-Open Publication No. H10-15064 discloses a method in which a pipe-shaped insulator is used at the center of the winding of the belt-shaped body instead of a core having a slit. In that method, a strip is bound to a pipe-shaped insulator, and then a strip-shaped electrode plate is wound through the pipe-shaped insulator to form an electric component element. Then, heat welding or the like is performed to bind the strip to the pipe-shaped insulator.

[0004]

By the way, the method of bonding a strip to a pipe insulator by heat welding or the like is limited to a pipe-shaped insulator made of a thermoplastic synthetic resin. Cannot be used. However, since the pipe-shaped body is located at the center of winding and can also function as a structural part, it is inconvenient to be limited to those made of thermoplastic synthetic resin. In addition, the band is not limited to a single sheet, but may be two or more depending on the structure of a capacitor or the like.
There may be more than one. When there are a plurality of such strips, it is not easy to bind the strips to the pipe-shaped insulator. When binding the second and subsequent strips,
The intermediate band between the pipe-shaped insulator and the outermost band must also be welded with a hot plate or the like, but the welding is indirect heating, so rapid and uniform welding cannot be performed. That's why. Therefore, in the winding of such a band, there is a problem that it is difficult to automate by eliminating a manual operation from a step of heat-welding the band.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a winding device for a strip which automates a winding process of the strip regardless of the material of the pipe as the core.

[0006]

According to a first aspect of the present invention, there is provided an apparatus for winding a belt, comprising: means for supplying a core to a core rotating position; and means for supplying a belt to the core. In a winding device for winding a belt-like body around a core by rotating a core, a self-winding end forming means for forming a self-winding end at an end of the supplied belt-like body, Sandwiching means for sandwiching between the band and the core, the sandwiching means sandwiching the self-winding end formed in the band between the band and the core, the band and the core are It is characterized by self-binding and winding up so that it cannot be unraveled. Therefore, a winding end is formed in the middle of the band by the self-rolling end forming means, and the winding end is sandwiched between the band and the core by the sandwiching means. Then, without taking any other binding means, the band-shaped body is in a state of being tied to the core, and the winding of the band-shaped body can be started.

Further, the apparatus for winding a belt-like body of the present invention comprises:
The self-winding end forming means forms the self-winding end by bending (folding) the strip. Therefore, the fold is convenient for sandwiching the winding end in a narrow gap between the strip and the winding core.

Further, in the strip winding device of the present invention, there are a plurality of strips, and the self-rolling end forming means forms a self-rolling end by bending a plurality of stacked strips. . Therefore, a plurality of strips are folded simultaneously at the same time. Therefore, the respective belt-like bodies are not restrained by the bent portion and do not shift from each other.

Further, in the belt winding device according to the present invention, the self-winding end forming means includes an end clamping mechanism for clamping an end of the belt, and a belt interlocked with the rotation of the core. And a fold forming mechanism for forming a fold by pressing the stagnant portion. Thus, while the end of the band is restrained, the band is sent out in conjunction with the rotation of the core, so that a stagnant portion is formed at the intermediate portion. A fold can be formed by pressing the staying portion. Since the thickness of the stagnant portion of the band is compressed in the fold, it is convenient to be sandwiched between the band and the core as a winding end.

Further, in the strip winding device of the present invention, the sandwiching means winds the self-rolling end by rotating the core while elastically pressing the strip against the core.
Therefore, the self-winding end that is bent and has a resilient elasticity can be tightly wound while being elastically pressed between the winding core and the belt-shaped body.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a winding device for a belt-shaped body according to the present invention. FIG. 1 shows a winding device 10 for a separator in the form of a strip.
0 is a side view. The winding device 100 includes a winding roller mechanism 50, an operation mechanism 60, and a separator cutting mechanism 70. Also, the winding roller mechanism 50
Has a core rotating shaft mechanism 200 as shown in FIG. FIG. 1 also shows a state in which the separator S is wound around the core C, and the core C is rotated by the core rotating shaft mechanism 200 to wind the separator S. The material of the separator S is, for example, paper or non-woven fabric, and has a thickness of several tens of μm. In the figure, the number of separators S is plural, for example, four, but is indicated by a single chain line for convenience.

The take-up roller mechanism 50 has three rollers 1, 11, 21 arranged at substantially equal intervals around a core rotation shaft mechanism 200. The three rollers 1, 11,
Numerals 21 are parallel to each other and have a length in a direction perpendicular to the paper surface, and are sufficiently longer than the axial length of the core C. Therefore, the separator S can be pressed over the entire width between the core S and the core C. The roller 1 at an intermediate height is the arm member 0
The arm member 02 is rotatably supported via a support shaft 03 at the distal end thereof, and the other end of the arm member 02 is fixed to the bracket 30. Also, the upper roller 11 is
2 is rotatably supported via a support shaft 13 at the distal end portion. The arm 12 is rotatably supported by a bracket 30 via a support shaft 14. At the other end of the arm 12,
A driven roller 15 is rotatably supported via a support shaft 16, and a spring hook 17 is attached.

The lower roller 21 is vertically symmetrically disposed with respect to the upper roller 11, and is rotatably supported at the tip of an arm 22 via a support shaft 23. 30 is rotatably supported via a support shaft 24. At the other end of the arm 22, a driven roller 25 is rotatably supported via a support shaft 26,
A spring hook 27 is attached. Two spring hooks 1
A tension spring 31 is stretched between 7, 27.
Further, a conical cam 40 is provided between the two driven rollers 15 and 25.
Is arranged. The conical cam 40 has a conical cam surface 41 and is attached to a tip of a piston rod 43 of a pneumatic cylinder 42.

The driven rollers 15, 25 are biased toward the conical cam by the tension spring 31, and
Rolls following 1 Therefore, when the conical cam 40 retreats rightward in the figure, the rollers 15 and 25 are pulled together by the tension spring 31 to reduce the distance therebetween,
The distance between the rollers 11 and 21 at the other end of the arms 12 and 22 can be increased. Conversely, when the conical cam 40 advances leftward in the figure, the interval between the rollers 11 and 21 is reduced. Therefore, the upper roller 11 and the lower roller 21 constitute a pair of opening / closing rollers.

The pneumatic cylinder 42 and the bracket 30 are fixed to the machine base 45 by known means. The pair of opening / closing rollers 11, 21 and the roller 1 are
If the core C is arranged at substantially equal intervals on the outer periphery of the core C, the core C
The number of the rollers may be minimized to press the separator S between them, which is convenient in structure.

In FIG. 2, the core rotating shaft mechanism 200 includes:
It has a pair of mandrels 51 and 52. The mandrels 51 and 52 can be moved in the axial direction by known means (not shown) and are driven to rotate. In addition, projections 51G and 52G that fit into the notches E at the ends of the winding core C are provided at the tips of these mandrels. Therefore,
The core C is sandwiched and rotated by the mandrels 51 and 52 from both ends.
In addition, as described later, the core rotation shaft mechanism 200 itself can also be translated downward.

In FIG. 3, the operating mechanism 60 includes an operating plate 6.
1 and is disposed so as to be horizontally movable at a position facing the core C and the rollers 1, 11, 21 so as to be able to advance toward the core C. The thickness W of the operation plate 61 is smaller than the diameter of the core C, and has a concave operation surface 62 on the front surface thereof and a vacuum suction hole 63 opened in the operation surface 62. . The other end of the vacuum suction hole 63 is connected to a vacuum pump device (not shown).
Therefore, the core C can be held by being vacuum-sucked on the operation surface 62.

A separator cutting mechanism 70 is arranged below the take-up roller mechanism 50. Separator cutting mechanism 7
0 is a die block 71 attached to the machine base 45;
It has a horizontal moving plate 72 that faces the die block 71 and can advance toward it. Die block 71
Has a clamp die 71A and a cutter die 71B. The horizontal moving plate 72 has a clamp jaw 72a to which a clamp rubber plate 72c is joined and a cutter blade 72b. The cutter blade 72b can engage with the cutter die 71B of the die block 71 to cut the separator S.

The die block 71 is fixed to the machine base 45 by known means. The machine base 45 is configured to be able to retreat to the right by known means. Accordingly, the core rotation shaft mechanism 200 can be translated downward as it is from the winding position in FIG.

Next, the operation of the belt-shaped body winding device 100 according to the present embodiment having the above-described configuration will be described. In FIG. 4, the separator S is supplied in a vertical plane and is close to the pair of rollers 11 and 21 of the take-up roller mechanism 50. At this time, the interval V between the rollers 11 and 21 is slightly larger than the diameter of the core C,
1 and 21, the winding core C is passed through the winding roller mechanism 5.
0 can be moved to the position of the core rotation shaft mechanism 200 in the middle. The interval between the rollers 11 and 21 is inversely proportional to the interval between the two driven rollers 15 and 25. As described above, the driven rollers 15 and 25 come along the conical cam surface 41. Since the piston rod 43 to which the conical cam 40 is attached retreats rightward, the distance between the rollers 11 and 21 is increased.
The lower end of the separator S is held between the clamp rubber plate 72c of the horizontal moving plate 72 and the clamp die 71A.

The winding core C is adsorbed and held on the operation surface 62 of the operation mechanism 60 on the side opposite to the take-up roller mechanism 50 with respect to the separator S, and is on standby. next,
The core C is held by the operating mechanism 60 and advances rightward, and the core C is used as a pair of mandrels 5 of the core rotating shaft mechanism 200.
It is mounted between 1 and 52. The core C is the core rotating shaft mechanism 2
When mounted on 00, the separator S is attached to the core C. Then, as shown in FIG. 5, the separator S is wound in an arc shape between the winding core C and the rollers 11, 21, 1 of the winding roller mechanism 50. After the core C is mounted on the core rotating shaft mechanism 200, the operation mechanism 60 returns to the left. The rollers 11, 21 of the winding roller mechanism 50
Are narrowed. The rollers 11 and 21 elastically press the core C and the separator S between the roller 1 and another roller 1 by the action of the pneumatic cylinder 42. Thereby, the separator S can be sent to the downstream side as the core C is rotated.

Next, as shown in FIG. 6, the core C is rotated about ２ by the core rotating shaft mechanism 200 and temporarily stopped. Thereby, the separator S becomes the separator S
Of the roller 11 against the resistance (reverse tension) on the supply side of
1. It is guided to the roller 21 and sent out downstream. Then, after passing through the lower roller 21, an arc-shaped stagnant portion SS is formed between the separator S and the upper roller 11. At this time, the lower end of the separator S is still sandwiched between the clamp rubber plate 72c and the clamp die 71A.

Next, as shown in FIG. 7, when the operation surface 62 of the operation mechanism 60 approaches the core C, the operation of the core C and the operation mechanism 60 is controlled. Pressed between surface 62. For this reason, the tip of the arcuate stay SS is bent to form a fold SSa. Since the arcuate stagnant portion SS of the separator S is overlapped and pressed at the fold SSa, the thickness of the arcuate stagnant portion SS is compressed, and the winding is easy. That means that an easy-to-wind end was formed in the middle of the separator S.

After forming the fold line SSa, the operation surface 62 retreats and keeps a slight distance from the winding core C. The fold SSa is formed on all of the plurality of separators S. This is because the operation surface 62 restricts the restoration of the separator S into an arc shape by its own elasticity. Further, when forming the fold SSa in the separator S, the vacuum suction holes 63 of the operation surface 62 are at rest. Next, when the winding core C starts to be rotated again, the fold SSa serving as the winding end is overlapped and wound inside the separator S which is pressed by the upper roller 11. Then, the core C is continuously rotated, and when the fold SSa turns the core C to some extent, for example, １ ／ or 1 turn, the separator S is wound around the core C. The wrapped state is a state in which the separator S adheres around the winding core C and cannot be unwound as if bound. What creates that state is the tension acting on the separator S and the frictional force between the separator S and the core C.

The tension acting on the separator S results from the fact that the separator S is wound up by the rotation of the core C, while a predetermined resistance (reverse tension) is applied on the supply side of the separator S. Further, when the inner side surface of the separator S is pressed against the core C, due to frictional force between each other,
Gap, no slip. Thus, when the tension is acting on the separator S, the separator S is in a state in which it cannot be released and is in a state of self-tightening. Therefore, when the winding of the separator S is started, the assisting of the elastic pressure when the winding of the separator S is continued is not required, so that the elastic pressure by the rollers 1, 11, 21 of the winding roller mechanism 50 is unnecessary.

In winding the separator S,
The clamp rubber plate 72c moves leftward and away from the clamp die 71A, and the lower end of the separator S is released. Therefore, the lower end of the separator S is free and can be wound up. When the winding of the separator S is started, the winding roller mechanism 50 retreats rightward with the machine base 45. In addition, the core rotation shaft mechanism 200 is left as it is,
Rewinding continues. Then, as shown in FIG. 8, the separators S1, S2, S3, and S4 are wound on the core C by the core rotating shaft mechanism 200, and merge with the winding to form the electrode foils E1 and E2. It is rolled up again. As a result, an element having a predetermined large outer diameter is wound.

After winding the separator S of a predetermined length, the core rotating shaft mechanism 200 moves in parallel in the direction of the dotted arrow Z in FIG.
To the downstream side. At this time, the cutter blade 72b retracts to the left and passes the wound separator S and the core rotating shaft mechanism 200. Next, as shown in FIG. 4, the take-up roller mechanism 50 returns together with the machine base 45, the rear end of the separator S is cut by the cutter 72b, and the front end of the separator S to be wound next is clamped. Is done. Thereby, the winding of the separator S can be started again. Thereafter, the winding operation is automatically repeated. The separator S wound around the core C is separately wound with an adhesive tape for binding the outer periphery thereof, and the winding of the separator S is completed. When the winding is completed, the wound body (element) of the separator S is discharged out of the apparatus.

The present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention. For example, the winding roller mechanism 50
Need not necessarily have a plurality of rollers, and a belt may be stretched in place of the rollers.

Next, the technical idea grasped from the above embodiment will be described below. (1) In a winding method of winding a band around a core, a step of supplying the core with the band to a position where the core is rotated, and pressing the core while resiliently pressing the band around the core. Rotating the belt and feeding the band; bending the part of the belt to form a self-winding end; and moving the self-winding end between the resilient band and the core. A method for winding a strip, comprising: a step of winding in; and a step of winding the strip.

(2) In a winding device for winding a strip around a core, a core rotating means for rotating the core and a strip arranged between the core rotating means and the core are provided. A repressing means for supporting the repressing force, and supplying the core with the belt to the core rotating means, and pressing a stagnant portion of the belt sent out by rotation of the core to form a self-winding end into a part of the belt And a strip cutting means for cutting a rear end of the strip every time the strip is wound up by a predetermined length.

[0031]

According to the present invention, there is provided an apparatus for winding a belt-shaped body, comprising means for supplying a core to a core rotating position, and means for supplying a band to the core, and rotating the core. A winding device that winds the band around the core, thereby forming a self-rolling end at an end of the supplied band, and winding the self-rolling end with the band. A pinching means for pinching between the cores, wherein the pinching means pinches the self-winding end formed in the band between the band and the core so that the band and the core cannot be unraveled. Take up with self-restraint. Therefore, a winding end is formed on the band by the self-rolling end forming means, and the winding end is sandwiched between the band and the core by the sandwiching means. Then, since the band-like body is tied to the core without any additional binding means, there is no need for a means for bonding the band-like body and the core.

Further, in the strip winding device of the present invention, the self-rolling end forming means forms the self-rolling end by folding the strip. Therefore, the fold can be sandwiched in a narrow gap between the band and the core, so that it is convenient to overlap the band with the self-winding end and wind it around the core.

Further, in the band winding device of the present invention, the plurality of bands are formed, and the self-winding end forming means forms a self-rolling end by bending a plurality of stacked bands. . Therefore, winding of a plurality of strips becomes possible.

Further, in the band winding device of the present invention, the self-winding end forming means includes an end holding mechanism for holding an end of the band, and a band in association with rotation of the core. And a fold forming mechanism for forming a fold by pressing the stagnant portion. Thus, while the end of the band is restrained, the band is sent out in conjunction with the rotation of the core, so that a stagnant portion is formed at the intermediate portion. A fold can be formed by pressing the staying portion. The fold is conveniently sandwiched between the band and the core as a winding end. Therefore, it is possible to automate such a winding process.

Further, in the band winding device of the present invention, the sandwiching means winds the self-rolling end by rotating the core while elastically pressing the band on the core.
Therefore, regardless of the material of the pipe-shaped body serving as the core, the belt-shaped body can be automatically wound.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a band-shaped body winding device according to the present invention.

FIG. 2 is a schematic diagram of a core rotation shaft mechanism 200.

FIG. 3 is a side view of the operation mechanism 60.

FIG. 4 is a side view showing a stage where a separator is supplied between an operation mechanism 60 and a take-up roller mechanism 50.

FIG. 5 is a side view showing a stage where the separator is wound around the winding core in an arc shape.

FIG. 6 is a side view showing a stage in which the arc-shaped stagnant portion SS is formed.

FIG. 7 is a side view showing a stage where a fold SSa is formed.

FIG. 8 is a side view showing a stage in which the separator and the electrode foil are overlapped and wound.

[Explanation of symbols]

 1, 11, 21 Roller 50 Take-up roller mechanism 60 Operating mechanism 70 Separator cutting mechanism 100 Separator take-up device C Core S Separator SSa Fold SSa

Claims (5)

[Claims] Means for supplying a core to a core rotation position;
Means for supplying a band to the core, and a winding device for winding the band around the core by rotating the core, wherein a self-winding end is provided at an end of the supplied band. And a sandwiching means for sandwiching the self-winding end between the band and the core, the sandwiching means including a self-winding end formed in the belt-like body. A winding device for a belt-shaped body, which is sandwiched between a core and a core so that the band-shaped body and the core are wound in a self-tightened state so as not to be unraveled. 2. The apparatus according to claim 1, wherein the self-winding end forming means forms the self-winding end by bending the band. 3. The self-winding end forming means forms a self-winding end by folding a plurality of stacked belt-like bodies. Item 3. The device for winding a belt-shaped body according to Item 2. 4. The self-winding end forming means includes an end clamping mechanism for clamping an end of the band, and a stagnant for feeding the band in conjunction with rotation of the core and forming a stagnant portion in the band. The winding device for a belt-shaped body according to any one of claims 1 to 3, further comprising a part forming mechanism and a fold forming mechanism that forms a fold by pressing the stagnant part. 5. The self-winding end according to claim 1, wherein the sandwiching means winds the self-winding end by rotating the winding core while pressing the belt-shaped body against the winding core. 4. The winding device for a belt-like body according to claim 1.