JPH0620892A - Automatic foil joining device of capacitor - Google Patents

Abstract

PURPOSE:To enable a capacitive element to be produced even while a take-up device is not in operation so as to enhance the device in operating efficiency by a method wherein a process where aluminum electrode foils are joined together and disused part of the foil is cut off is automatically carried out detecting that a residual aluminum foil wound on a reel is decreased. CONSTITUTION:A sensor 2A detects that the residue of an electrode foil 1A runs out. Thereafter, when a sensor 2B detects that second electrode foil 1B is mounted, a solenoid 5 is actuated, clampers 4A and 4B are made to approach and come into contact with each other by a crank 10 to join the electrode foils 1A and 1B together with an adhesive tape 12. After joining, the terminal of the electrode foil 1A is cut off with a fixed edge 9 and a movable edge 8A. By this setup, a capacitor can be continuously rolled and produced without stopping a capacitor element take-up device even if an electrode foil runs out, so that the capacitor element take-up device can be improved in operating efficiency and productivity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic foil joining device for capacitors, and more particularly to a winding device for aluminum electrolytic capacitor elements.

[0002]

2. Description of the Related Art Conventionally, an aluminum electrode foil for a capacitor, which is attached to a winding device for an aluminum electrolytic capacitor element, has a reel shape, and as shown in FIG. Leave. Then, the sensor 3 for detecting the presence or absence of the electrode foil detects that the aluminum electrode foil is used up, and the winding device for the capacitor element is stopped.

After that, an operator manually replenishes the aluminum electrode foil 1 to the reel core B, joins the tip of the aluminum electrode foil 1 with an adhesive tape 12 as shown in FIG. 4, cuts unnecessary portions, and returns. It was

[0004]

When the reel remaining amount of the aluminum electrode foil is exhausted, the winding device for the capacitor element is stopped, but the time during which the device is stopped is in the manufacturing of the element. Since it is very inefficient, it has been a problem to eliminate the down time of the winding device that occurs when the aluminum electrode foil is used up and to improve the productivity.

[0005]

[Means for Solving the Problems] In order to eliminate the time during which the reel remaining amount of the aluminum electrode foil is reduced and the winding device for the capacitor element is stopped, the aluminum electrode foil is adhered during the work performed by the operator. The operation of connecting with tape and cutting off unnecessary portions is automatically performed by detecting the loss of the aluminum electrode foil. That is, a first electrode foil that passes between a pair of clampers that face each other and can come into contact with each other, a sensor that detects the remaining amount of the reel of the first electrode foil, and a surface that is held by the clampers facing each other. Adhesive tape and a second adhesive tape that can be attached to the adhesive tape at one end and can face the first electrode foil.
When the remaining amount of the reel of the first electrode foil is reduced and the sensor is activated, the pair of clampers come close to each other to attach the second electrode foil and the first electrode foil to each other. It is an automatic foil splicing device for a capacitor, which is characterized in that the remaining part of the first electrode foil is cut by joining with.

[0006]

By using this device, the remaining amount of the remaining aluminum foil on the reel is eliminated, and the element can be produced even during the time when the winding device is stopped, which improves productivity and improves work efficiency. it can.

[0007]

The operation of an embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1
A, 1B are aluminum electrode foils, 2A, 2B are sensors for detecting the presence or absence of reel electrode foils, 3A, 3B are sensors for detecting the presence or absence of electrode foils arranged between the reel portion and the clamper, 4A, 4B. Is a clamper.

First, if the winding device is supplied from the first electrode foil 1A, when the winding diameter of the electrode foil 1A becomes sufficiently small, the sensor 2A detects that the remaining amount of the electrode foil 1A is exhausted. After that, when it is detected that the second electrode foil 1B is attached by the sensor 2B and that both of the electrode foils 1A and 1B are present by the sensors 3A and 3B, the direct acting solenoid 5 is operated and the crank The clampers 4A and 4B approach and come into contact with each other while making an arc motion about the roller 7 by means of 10 to bond the electrode foils 1A and 1B with the adhesive tape 12. In that state, in order to process the end of the electrode foil 1A after joining,
The electrode foil 1A is cut by the fixed blade 9 and the movable blade 8A. After that, the direct-acting solenoid 5 stops the excitation, and the operation of the crank 10 causes the clampers 4A and 4B to separate from the roller 7 about the axis.

Further, the electrode foil 1B is continuously supplied to the winding device, the winding diameter of the electrode foil 1B is sufficiently small, and the sensor 2B detects that the remaining amount of the electrode foil 2B is reduced and the foil is lost. Also at this time, the movable blade 8B is operated to perform an operation different from the desired one. That is, the electrode foils 1A, 1
It can be supplied alternately from the B reel.

Here, a method for mounting the aluminum electrode foil 1 will be described. In FIG. 2, the adhesive tape 12 is attached to the end of the electrode foil 1 having a sufficiently large winding diameter so that half or more of the length thereof is not hidden by the electrode foil 1. This is attached to the clamper 4 as shown in FIG. 3, which is shown in FIG.
As shown by, a hole is drilled in the hole, and a cap screw 14 is used to prevent air from leaking. This is connected to the vacuum pump 6 through the tube 15 to make the inside of the clamper 4 a low pressure. Due to this pressure difference, the adhesive tape 1 is attached to the clamper 4.
2 and the electrode foil 1 can be attached so as not to fall off.

[0011]

As described above, according to the automatic foil splicing device for a capacitor of the present invention, even when the capacitor is continuously wound and the remaining amount of the electrode foil is reduced and disappears, a winding device for the capacitor element is performed. Since the capacitor can be continuously produced without stopping, the operating rate of the element winding device is improved, and the productivity of the capacitor element can be remarkably improved.

[0012]

[Brief description of drawings]

FIG. 1 is a front view of a main part of an embodiment of an automatic foil splicing device for an electrolytic capacitor according to the present invention.

FIG. 2 is a perspective view showing an electrode foil and an adhesive tape to be joined.

FIG. 3 is a cross-sectional view of a main part of the clamper in the automatic capacitor foil splicing device according to the present invention.

FIG. 4 is a perspective view of a main part of the conventional winding device when the electrode foil is used up.

[Explanation of symbols]

 1: electrode foil 1A: first electrode foil 1B: second electrode foil 2A: sensor 2B: sensor 3: sensor 3A: sensor 3B: sensor 4A: clamper 4B: clamper 5: direct acting solenoid 6: vacuum pump 7: Roller 8A: Movable blade 8B: Movable blade 9: Fixed blade 10: Crank 11: Guide 12: Adhesive tape 13: Reel core 14: Set screw 15: Tube

Claims (1)

[Claims] 1. A first electrode foil passing between a pair of clampers facing and approaching each other, a sensor for detecting a reel remaining amount of the first electrode foil, and an opposing surface of the clamper. And a second electrode foil which is attached to the pressure-sensitive adhesive tape at one end thereof and can face the first electrode foil. The reel remaining amount of the first electrode foil is reduced, and the sensor is When actuated, the pair of clampers approach each other to bond the second electrode foil and the first electrode foil with an adhesive tape and cut the remaining part of the first electrode foil. Connecting device.