JPH0724255B2 - Winding mechanism for electrolytic capacitor element - Google Patents

Description

The present invention relates to a winding mechanism for winding an electrolytic capacitor element.

[Conventional technology]

The electrolytic capacitor element 2 which is the main component of the electrolytic capacitor is
As shown in FIG. 6 (A), the anode foil 4 and the cathode foil 6 are spirally wound with the separators 8 and 10 interposed between the strip-shaped anode foil 4 and the cathode foil 6. Tabs 12 and 14 that are external terminals are connected to the.

The electrolytic capacitor element 2 is formed through a processing step of processing the anode foil 4 and the cathode foil 6 and a winding step of processing the element. In the processing step, the anode foil 4 and the cathode foil 6
Are subjected to the etching treatment, the anode foil 4 is subjected to a chemical conversion treatment, the cutting treatment is performed, and the tabs 12 and 14 are connected to the anode foil 4 and the cathode foil 6. In the winding step, the separator 8, between the anode foil 4 and the cathode foil 6 to which the tabs 12 and 14 are connected,
Insert 10 and rotate it around the winding shaft to complete the electrolytic capacitor element 2. Then, as shown in FIG. 6B, the holding tape 16 is attached to the wound electrolytic capacitor element 2 as the final step of the winding process to prevent the winding from loosening.

[Problems to be Solved by the Invention]

By the way, in the production of such an electrolytic capacitor element 2, since the winding process affects the production cost, an automation process has been conventionally performed in order to reduce the production cost. For example, one winding of the electrolytic capacitor element 2 is performed by supplying the anode foil 4, the cathode foil 6 and the separators 8 and 10 to the winding shaft, rotating the winding shaft and stopping it, and holding tape for the wound electrolytic capacitor element 2. Although the process is performed through the steps of attaching 16 and removing the electrolytic capacitor element 2, the structure is simple, but the processing steps are complicated. The winding shaft, which forms the center of the winding process of the electrolytic capacitor element 2, naturally needs a structure corresponding to the automated processing and a mechanism for increasing the processing speed.

Therefore, an object of the present invention is to provide a winding mechanism for an electrolytic capacitor element, which has a simple structure and is suitable for automated processing of the electrolytic capacitor element.

[Means for Solving the Problems]

As shown in FIG. 1, the winding mechanism of the electrolytic capacitor element of the present invention is provided with a slit that sandwiches the electrode foil and the separator, and the electrode foil and the separator are sandwiched between the slits to form the electrolytic capacitor element. A winding core, a winding body connected to the winding body and supported by a support member so as to be movable back and forth and rotatably, and receiving a rotating force from a motor, imparting a rotating force to the winding body. A spring is inserted between the rotation transmitting mechanism, the winding shaft body and the support member, and the winding core portion is advanced through the winding shaft body by the spring, and the winding shaft body is opposed to the spring. Through a winding shaft advancing and retracting mechanism for retracting the winding core portion, an angle detector for detecting the angle of the slit of the winding core portion, and a detection output of the angle detector, A winding control means for controlling the advancing / retreating mechanism as well as controlling the direction of the slit of the winding core and controlling the rotation of the winding core, and receiving the detection output of the angle detector. Thus, after rotating the winding shaft body to align the direction of the slit of the winding core portion with the direction of the electrode foil and the separator, the winding shaft body is advanced, and the electrode foil sandwiched in the slit. After winding the separator, and rotating the winding shaft body to wind the electrolytic capacitor element around the winding core,
It is characterized in that the winding shaft main body is retracted.

[Action]

The electrode foil and the separator are continuously transferred to the front side of the standby core portion, and the core portion moves forward and backward together with the winding shaft body by the forward and backward movement mechanism. Therefore, when the winding core portion advances with respect to the electrode foil and the separator that are continuously transferred, the electrode foil and the separator are sandwiched in the slit. When the winding core part is rotated together with the winding shaft main body by the rotating mechanism in this state, the electrode foil and the separator sandwiched in the slit are spirally wound around the winding core part around the sandwiched portion, It is formed as a cylindrical electrolytic capacitor element.

Since the number of windings of the electrode foil and the separator around the electrolytic capacitor element depends on the number of rotations of the winding core, a desired capacity is set in the formed electrolytic capacitor element by controlling the rotating mechanism.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

FIG. 1 shows an embodiment of a winding mechanism for an electrolytic capacitor element according to the present invention.

This winding mechanism constitutes the main body of a winding device for electrolytic capacitor elements, and a disk-shaped table 20 is installed as a supporting member for supporting the mechanism portion in this winding mechanism.
A cylindrical winding body 22 is rotatably and movably installed on the table 20, and a winding core 24 is attached to the tip of the winding body 22. Then, an advancing / retreating mechanism 26 for advancing / retreating the winding core 24 with a predetermined width through the winding shaft main body 22.
Is installed, a rotating mechanism 28 for rotating the electrolytic capacitor element for winding is installed, and a reciprocating mechanism 26 is installed.
A cooperative relationship is set for the rotating mechanism 28 by electrical control by the winding control unit 30.

In this winding mechanism, the winding core portion 24 serves as a winding core for the electrolytic capacitor element, and the slit 24 for inserting the electrode foil and the separator to be wound as the electrolytic capacitor element.
1 is formed with a depth corresponding to the width of the electrode foil and the separator, and a guide surface 242 which is an inclined surface for guiding the electrode foil and the separator is formed on the tip end side thereof.

The winding core portion 24 is detachably attached to the tip end portion of the winding shaft main body 22 with a fixing screw 243 so as to correspond to the size and wear of the electrolytic capacitor element to be formed and can be arbitrarily replaced.

The table 20 has a support hole 20 penetrating in a circular shape.
1 is formed, the front surface support portion 32 on the front surface side, the rear surface support portion 34 on the back surface side, respectively, bolts 36 as fixing means,
It is fixed by 38. An outer ring portion 401 of the ball bushing 40 is fixed to a support hole 201 formed in the table 20 as a bearing means for supporting the winding shaft main body 22 so as to be able to move back and forth.
The outer ring portion 401 has an inner ring portion 4 fixed to the winding body 22.
02 is inserted rotatably and freely.

The outer ring portion 401 of the ball bushing 40 slightly projects from the front surface of the table 20 to face the front surface support portion 32, and a cylindrical spacer 321 is installed on the front surface portion of the outer ring portion 401 that projects. . The spacer 321 covers the front surface of the winding shaft main body 22, and the rear end of the guide body 322 installed to project the winding core portion 24 from the center thereof is inserted and attached to the middle portion thereof. A stopper ring 323 is installed on the front surface of the spacer 321.
A bearing 324 is installed between the stopper ring 323 and the front inner surface of the front surface support portion 32, and the guide body 322 is rotatably supported by the front surface support portion 32.

Further, a support ring 221 is attached to a midway portion of the winding shaft main body 22, and the support ring 221 is installed at a large diameter portion on the back side of the support hole 201. A stopper ring 222 is fixed to the support ring 221, and a bearing 42 is installed between the stopper ring 222 and the table 20 and the back surface support portion 34. Therefore, the winding shaft main body 22 includes the table 20 and the back surface support portion 34.
Is rotatably supported by a support ring 221 via a bearing 42 and is slidable inside the support ring 221.

Further, an outer jacket portion 223 attached to the winding shaft body 22 is exposed inside the rear surface support portion 34, and a bearing 44 is provided between the middle portion of the outer shell portion 223 and the rear end portion of the rear surface support portion 34. The outer cover portion 223 is attached and is rotatably supported by the rear surface support portion 34 via the bearing 44. The cylindrical main body 22 is provided in the cylindrical space formed between the outer cover 223 and the back support 34.
A pin 225 that penetrates in the middle of
Coiled spring 46 that urges between the bearing and the bearing 44
Is installed. Therefore, the mantle portion 223 and the reel body 2
The two are mechanically connected to each other via a spring 46.
Further, a space portion is formed between the winding portion main body 22 and an inner diameter portion on the rear end side of the outer covering portion 223, and in this space portion, the outer covering portion 223 forming a ball bushing fixed to the winding body 22 is formed. The inner ring portion 226 is rotatably faced.

A gear 281 for imparting rotation to the outer cover 223 is attached to the outer surface of the outer cover 223, and a gear 282 rotatably attached to the back support 34 is meshed with the gear 281. A drive gear 283 is meshed with 282. A motor 284 serving as a rotation drive unit is connected to the drive gear 283, and the motor 284 is driven by the drive output of the rotation drive unit 285. Then, the rotation control signal Vs from the winding control unit 30 is applied to the rotation drive unit 285, and a drive output corresponding to the rotation control signal Vs is obtained.

Further, the slit 24 of the winding core 24 is provided on the rear end side of the winding body 22.
The indicating shaft 48 representing the angle of 1 is fixed. An angle detector 481 is installed as a detection means for electrically detecting the angle of the indicating shaft 48, and the angle detection signal Vθ is added to the winding control unit 30 as winding control data.

A flange 50 is fixed to the back side of the instruction shaft 48 via a spacer 227 with a nut 228 attached to the rear end of the winding shaft body 22 as a fixing means. A bearing 501 is installed between the flange 50 and the winding shaft main body 22, and thrust bearings 502 and 503 are interposed between the flange 50 and the winding shaft main body 22.
Is rotatable by a bearing 501 with respect to the winding body 22, and is supported by thrust bearings 502 and 503. The flange 50 has a forward / backward movement arm 26 that forms part of the forward / backward movement mechanism 26.
An advancing / retreating drive unit 262 for advancing / retreating by an electromagnetic force is installed on the advancing / retreating arm 261 when 1 is engaged. The advancing / retreating drive unit 262 receives an advancing / retreating control signal V _FB from the winding control unit 30 to obtain a drive output for advancing / retreating the winding shaft main body 22 at a predetermined timing.

The operation will be described based on the above configuration.

Before winding the electrolytic capacitor element, the winding shaft main body 22 is
As shown in FIG. 2, move in the direction of arrow a to stop,
The winding core 24 is placed in the front support 32. At this time, the slit 241 of the winding core 24 faces in any direction. The angle of the instruction shaft 48 representing the angle of the slit 241 is detected by the angle detector 481, and the angle detection signal Vθ representing the angle of the slit 241 is obtained.

When the angle detection signal Vθ is applied to the winding control unit 30, the winding control unit 30 calculates the angle required to shift the slit 241 from the angle with respect to the initial setting position of the slit 241 to the initial setting position. as shown in X of Fig., the first rotation control signal Vs ₁ which rises at time t ₁ is obtained. Here, the initial setting position of the slit 241 means the anode foil 4 and the cathode foil 6 as the electrode foil to be transferred and the separator 8,
The position at an angle of 0 ° in which the slit 241 is parallel to 10 is shown. Therefore, the rotation control signal Vs ₁ represents the rotation speed of the motor 284 with respect to the initial setting position, and the gears 281, 282, 283.
It is set according to the gear ratio of.

When the rotation control signal Vs ₁ is applied to the rotation drive unit 285, the rotation drive unit 285 obtains a rotation drive output according to the rotation control signal Vs ₁ , and the motor 284 rotates by the required number of rotations, and the winding shaft main body 22 Rotates in the direction shown by arrow b, as shown in FIG. 4 (A), and the slit 241 is initialized as shown in FIG. 4 (B). The rotation control signal Vs ₁ is released at the time point t ₂ , and the time T _R represents the initial setting time.

Then, the anode foil 4, the cathode foil 6, and the separators 8 and 10 are continuously supplied to the front part of the winding core 24 through a supply means (not shown).

The slit 241 of the winding core 24, which has completed the initial setting, is maintained parallel to the supplied anode foil 4, cathode foil 6 and separators 8 and 10, and in this state, as shown by Y in FIG. ₃
The advancing / retreating control signal V _FB rising at is generated from the winding control unit 30, and the advancing / retreating control signal V _FB is added to the advancing / retreating drive unit 262. The forward / backward drive unit 262 generates a drive output in synchronization with the rising of the forward / backward control signal V _FB , and moves the forward / backward arm 261 forward. The flange 50 engaged with the advancing / retreating arm 261 is pushed forward by the driving of the advancing / retreating arm 261 to move the winding shaft main body 22 forward, and as shown in FIG.
Protrudes. When the winding core 24 projects, its slit 241
The anode foil 4, the cathode foil 6 and the separators 8 and 10 are sandwiched in the inside of the above. Then, the advancing / retreating control signal V _FB maintains the high (H) level until time t ₆ , and the time T _F is the core
A section in which 24 is projected, a time T _B represents a section in which the winding core 24 is retracted.

Next, as shown by X in FIG. 3, at the time t ₄ , the winding control unit 30
Generates a _second rotation control signal Vs ₂ , and the drive output corresponding to this rotation control signal Vs ₂ is output from the rotation drive unit 285 to the motor 28.
Added to 4. The time T _D of the rotation control signal Vs ₂ is the H level section from the time point t ₄ to the time point t ₅ , and represents the rotation time of the motor 284.

When the motor 284 rotates, the rotational force is generated by the gears 283, 282, 2
It is added to the mantle portion 223 through 81 and transmitted to the winding shaft main body 22. As a result, the winding core 24 rotates together with the winding shaft body 22, and as shown in FIGS. 4D and 4E, the winding core 24 is rotated.
By rotating in the direction indicated by the arrow c, the anode foil 4, the cathode foil 6 and the separators 8 and 10 are wound around the winding core 24,
As shown in FIG. 5, the electrolytic capacitor element 2 is provided on the winding core 24.
Is formed.

Next, the anode foil 4, the cathode foil 6 and the separators 8 and 10 are cut from the electrolytic capacitor element 2 formed on the winding core portion 24, and a holding tape 16 is adhered to the surface thereof to prevent rewinding. And is formed as a single electrolytic capacitor element 2. Adhesion of the holding tape 16 as described above is performed by the winding core 24
Instantly during the rotation of.

Next, when the advancing / retreating control signal V _FB is released and the level shifts to the low (L) level, as shown in (F) of FIG. 4, the winding core 24 moves backward together with the winding shaft main body 22, and the backward movement causes electrolysis. The core portion 24 is pulled out from the capacitor element 2, and the electrolytic capacitor element 2 separated from the core portion 24 is transferred by the transfer means (not shown) to the enclosing step in the next outer case as shown by the arrow d. It

Next, the winding control unit 30 shifts to the initial state, and the electrolytic capacitor element 2 is continuously manufactured through the steps (A) to (F) of FIG.

Although the embodiment has been described with respect to the case where a single core portion 24 is installed, the present invention can be similarly applied to the case where a plurality of core portions 24 are installed, and in that case, a predetermined The advancing / retreating control signal and the rotation control signal are generated at the timing of, and the positioning of the winding core is performed while the winding core is moving, so that the electrolytic capacitor element 2 can be continuously and rapidly operated.
Can be produced.

〔The invention's effect〕

As described above, according to the present invention, the winding structure of the electrolytic capacitor element suitable for the automation process can be realized by the simple structure, and the manufacturing speed of the electrolytic capacitor element can be increased.
The production efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a winding mechanism of an electrolytic capacitor element of the present invention, FIG. 2 is a diagram showing a mechanical operation of the winding mechanism of the electrolytic capacitor element shown in FIG. 1, and FIG. Is the first
The figure which shows the control operation of the rotation drive part and the advancing / retreating drive part in the winding mechanism of the electrolytic capacitor element shown in FIG. 4, and FIG. 4 is the winding of the electrolytic capacitor element by the winding mechanism of the electrolytic capacitor element shown in FIG. FIG. 5 is a perspective view showing an operation of the electrolytic capacitor element wound by the winding mechanism of the electrolytic capacitor element shown in FIG. 1, and FIG. 6 is a general electrolytic capacitor element. It is a perspective view shown. 2 ... Electrolytic capacitor element 4 ... Anode foil (electrode foil) 6 ... Cathode foil (electrode foil) 8, 10 ... Separator 20 ... Table (supporting member) 22 ... Winding shaft main body 24 ... Winding core 241 …… Slit 26 …… Advance and retraction mechanism 262 …… Advance and retraction drive unit 28 …… Rotation mechanism (rotation transmission mechanism) 284 …… Motor 481 …… Angle detector 30 …… Rolling control unit (winding control means)

Claims (1)

[Claims] 1. A core provided with a slit for sandwiching an electrode foil and a separator, and a core portion sandwiching the slit for winding the electrode foil and the separator to form an electrolytic capacitor element; A reel main body rotatably and rotatably supported by a member; a rotation transmission mechanism that receives a rotational force from a motor to apply a rotational force to the reel main body; and a reel main body and the support member. A winding shaft advancing / retracting mechanism that inserts a spring between them and advances the winding core portion through the winding shaft body by the spring, and retracts the winding core portion through the winding shaft body against the spring. An angle detector for detecting the angle of the slit of the core portion, and a detection output of the angle detector to rotate the motor to control the direction of the slit of the winding core portion. Winding control means for controlling the rotation of the winding core and controlling the advancing / retreating mechanism, and receiving the detection output of the angle detector to rotate the winding shaft body to rotate After adjusting the direction of the slit to the direction of the electrode foil and the separator, the winding shaft main body is advanced, the electrode foil and the separator sandwiched in the slit are wound, and the winding shaft main body is rotated to A winding shaft mechanism for an electrolytic capacitor element, comprising winding the electrolytic capacitor element around a winding core and then retracting the winding shaft body.