JPS6236379B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of assembling a capacitor element, rubber bushing, and capacitor case of an electrolytic capacitor.

Conventionally, when automatically assembling the capacitor element, rubber bushing, and capacitor case of an electrolytic capacitor, the rubber bushing, capacitor element, etc. were each supplied and held in a rubber bush holder, a capacitor element holder, etc. provided on an intermittently rotating turret. After that, the direction of these parts was regulated by a mechanism installed in the turret, and then the rubber bush and capacitor element were assembled and inserted into the capacitor case, which resulted in the turret mechanism becoming larger and making it difficult to operate at high speeds. I had an unsuitable problem.

An object of the present invention is to provide an assembly method that allows an electrolytic capacitor to be assembled at high speed by making it possible to reduce the size and weight of an intermittent rotating turret.

The present invention provides an electrolytic capacitor assembly method in which a capacitor element whose lead wires are inserted into lead wire insertion holes of a rubber bushing is inserted into a case.
The rubber bushing is held by restricting the lead wire insertion hole in a certain direction in a capacitor element holder provided at equal intervals around the turret that rotates intermittently, and the lead wire is directed upward from the bottom of the rubber bushing. Raise the capacitor element while aligning it with the insertion hole, pass the lead wire into the lead wire insertion hole, hold the lead wire from above the rubber bushing, and pull up the lead wire together with the capacitor element. The tab of the capacitor element is inserted into the insertion hole, and the capacitor case is held by a case holder provided between the adjacent capacitor element holders at the periphery of the turret. The capacitor element with a rubber bush held by the capacitor element is transferred into the capacitor case.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the method for assembling an electrolytic capacitor according to the present invention will be described below with reference to the drawings.

1 to 6, an assembly apparatus for carrying out the assembly method according to the invention is shown.
This assembly device 1 includes a turret 2 which is intermittently rotated by a known mechanism and has capacitor element holders 3 and case holders 4 arranged alternately at predetermined intervals around the turret 2; A rubber bush supply mechanism 5, a capacitor element supply mechanism 6, a case supply mechanism 7 and a capacitor element loading mechanism 8 are provided in
They are arranged in the positional relationship shown in the figure.

The capacitor element holder 3 is pivoted to the turret 2 by a pair of support pins 31 and 32, and has a bush holding chuck 3 consisting of a pair of holding claws 301 and 302 biased to the closed position by a spring 303.
Consists of 0. At the rear end of one pawl 301 is a roller 30 that engages with a cam plate concentric with the turret.
4 is attached, and the holding claws 301 and 302 are opened and closed by engagement and separation between the cam plate and the roller.

The case holder is formed at the tip of a long main body 40 and accommodates and holds a capacitor case (hereinafter simply referred to as the case) in a receiving hole 41 into which an elastic bush (not shown) is fitted.

The rubber bush supply mechanism 5 includes a transfer turret 52 that receives and sends rubber bushes one by one from an alignment supply chute 51, a direction adjustment turret 53 in which a plurality of bush holding heads 54 are rotatably provided at equal intervals, and a motor (see FIG. a roller 55 adapted to be rotated by (not shown) which engages and rotates the bushing retaining head 54;
It has a push-up pin 56 (FIG. 2) that pushes up the rubber bush a in the bush holding head 54 to the position of the bush holding chuck and transfers it to the chuck.

The rubber bush supply mechanism 5 inserts the rubber bushes a supplied from the alignment supply chute into the bush holding head 54, and then rotates the roller 55 to align the pair of lead wire insertion holes of the rubber bushes in the bush holding head. (For example, the detection pin is placed on the rubber bushing, and when the detection pin enters the insertion hole and falls, the rotation of the roller is stopped to adjust the direction.) Then, at position A, push up the rubber bushing to the pin 56. It is designed to be pushed up and held by the bush holding chuck 30.

The capacitor element feeding mechanism 6 includes an element alignment supply chute 61 that arranges capacitor elements (hereinafter simply referred to as elements) in a straight line and sequentially feeds them while keeping the alignment direction of a pair of lead wires constant; Direction regulating and reversing mechanism 6 that receives the lead wires one by one, regulates the arrangement direction of the lead wires to a constant value, and inverts them so that the lead wires are on the upper side.
2, and an element transfer turret 63 for receiving the element from the direction adjustment and reversing mechanism 62 and inserting the lead wire into the lead wire insertion hole of the rubber bush a held by the bush holding chuck 30. Since each of these devices has a known structure, detailed explanation thereof will be omitted.

As shown in FIGS. 3 and 4, this capacitor element feeding mechanism receives the elements with the lead wires facing upward and the alignment direction constant from the direction adjustment and reversing mechanism by an element transfer turret 63. The lead wire is inserted into the insertion hole from below the rubber bush held by the bush holding chuck 30 and pushed up to fit the tab t of the lead wire into the insertion hole b.

The capacitor element into which the tab has been fitted is then held via the rubber bushing.

The case supply mechanism 7 includes an alignment supply chute 71 and a transfer turret 72, each having a known structure, and receives the cases sent from the alignment supply chute 71 one by one at the transfer turret 72, and transfers the cases into the receiving hole 41 of the case holder 4. It is designed to be pushed in using a known method.

The capacitor element loading mechanism 8 is shown in FIGS. 5 to 7.
As shown in the figure, the main body 8 is attached to the upper end of a support shaft 81 that is vertically movably supported by a support 80.
2, and a rotating shaft 8 rotatably attached to the main body.
3, a pair of chucks 84 attached to the lower end of the rotating shaft, an opening/closing mechanism 85 for the chucks 84, and a rotating mechanism 86 for the rotating shaft 83.

Each chuck 84 has a fixed claw 841 fixed to the chuck body 840 and a movable claw 842 pivotally connected to the chuck body by a pin 843, and these claws are adapted to clamp the lead wire. The opening/closing mechanism 85 includes a cam plate 851 rotatably attached to the main body 82 and a lever 85 pivotally connected to the main body by a pin 855 and rotated by the cam plate.
2, and when the lever is rotated, the link 85
3. The movable claw is opened and closed via the lever 854 and pin 843.

The rotation mechanism 86 includes a cam plate 861 attached to the rotation shaft 83, a gear 863 attached to the rotation shaft via a one-way clutch 862, and a pressure force that engages with a groove in the cam plate 861 to restrict rotation of the rotation shaft. A shaft 8 rotatably inserted into the lever 864 and the support shaft 81
65 and a gear 866 that meshes with gear 863.

This capacitor element loading mechanism 8 operates when the capacitor element fitted into the rubber bushing and held together with the rubber bushing comes to position E due to intermittent rotation of the turret, after the main body 83 descends with the movable claw 842 open, the movable claw 842 is closed by the opening/closing mechanism 85 to clamp the lead wire of the capacitor element, and after the main body 82 is raised, the rotating shaft 83 is rotated approximately 180 degrees by the action of the rotating mechanism 86 (as shown in FIG. (The protrusion of the compression lever 864 enters the groove of the plate 861 and the rotating shaft stops), and the main body descends again and the capacitor is placed in the case C (Fig. 8) held by the case holder, which is stopped intermittently at position F. Insert the element together with the rubber bushing.

Next, the entire assembly method will be explained. When the bush holding chuck 30 of the turret 2 comes to position A due to intermittent rotation of the turret, a rubber bush A is supplied from the rubber bush supply mechanism 5 with the alignment direction of the insertion holes kept constant, and is held by the bush holding chuck 30.

Next, when the rubber bushing is held by the bushing holding chuck and reaches position B, the capacitor element feeding device 6 supplies the element by passing the lead wire into the insertion hole b of the rubber bushing a, and inserting the tab t into the insertion hole. and hold the element through the rubber bushing.

When the case holder 4 comes to position C, its receiving hole 4
A case is supplied within 1.

Furthermore, when the capacitor case fitted into the rubber bush and held integrally comes to position E, the capacitor transfer mechanism 8 operates as described above, and the capacitor element with the rubber bush fitted is inserted into the case C, and the assembly is completed. Complete.

The capacitor thus assembled is sent to a caulking device (not shown) by the transfer mechanism 9 and is caulked.

9-11, an apparatus for carrying out another embodiment of the present assembly method is shown. The assembly method of this embodiment differs from the previously described method in that the tab t is inserted into the insertion hole in the rubber bushing by pulling the lead wire, but is otherwise the same. Therefore, only the differences will be explained.

In this device, a capacitor element holder is constructed as shown by 3a in FIGS. 9 and 10 in order to pull the lead wire.

The capacitor element holder 3a has a pair of support pins 31 fixed vertically to the periphery of the turret 2,
It consists of a lead wire regulating chuck 35 and a rubber bushing holding chuck 30 which are attached to the lead wire regulating chuck 32 one above the other. Rubber button retaining chuck 30
has a pair of retaining pawls 301 and 302 pivotally mounted on support pins 31 and 32 and biased toward each other in a closed position by springs (not shown); A semi-circular notch is formed in each case forming a circular retaining hole. The retaining claws 301 and 302 are interlocked by teeth 305 and 306 formed thereon meshing with each other, and by rotating one of the retaining claws (for example, 302) in the direction of arrow X, both retaining claws can be rotated. can now be opened at the same time.

The regulating chuck 35 is connected to a pair of regulating plates 3 which are pivotally connected to the support pins 31 and 32 and are urged to a closed position (a position where the lead wire is sandwiched) by a spring 353.
51 and 352. A roller 354 is rotatably attached to the rear end of the regulation plate 31. The regulating plates 351 and 352 are the protrusions 355 and 35.
6, and by rotating the regulating plate 351, the other regulating plate 352 can be rotated simultaneously. The regulation plate 351 further includes a spring 3
57 to the closed position. Furthermore, 35
8 is a stopper for the regulation plate 31.

When the roller 354 at the rear end of the regulating plate 351 is engaged with the cam surface 21 of the cam plate 20 provided above the turntable 2, this regulating chuck
It opens as shown in the figure.

In the above embodiment, the rubber bush holding chuck 30 has the rubber bush a at position A with the direction of the insertion hole b constant (in this embodiment, in a straight line in the radial direction of the turret 2). At position B, the capacitor element feeding mechanism 6 feeds the element e by passing the lead wire into the insertion hole of the rubber bushing, but unlike the previous embodiment, the tab t is not inserted into the insertion hole. When supplying this element, the regulating plates 351 and 352 of the lead wire regulating chuck 35 are opened by the action of the cam plate 20, and when the supply is completed, the lead wire regulating chuck 35 closes to clamp the lead wire and hold the element. .

When the rubber bush and the element held by the capacitor element holder 3 come to position D due to the intermittent rotation of the turret 2, the lead wires l ₁ , l ₂
is a lead wire tension chuck 10 (11th
(Fig.) and then pulled upwards with respect to the rubber bushing. Therefore, the tab t is inserted into the insertion hole of the rubber bushing.

Thereafter, when the capacitor element is brought to position E by intermittent rotation of the turret, the capacitor element is inserted into the case in the same manner as in the previous embodiment.

As described above, in the method for assembling an electrolytic capacitor according to the present invention, when a rubber bush is supplied to and held by the rubber bush holding chuck of the turret, the direction of the lead wire insertion hole is regulated in advance to a certain degree. There is no need to provide a device for direction adjustment, the turret can be made smaller, and high-speed operation is therefore possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of an apparatus for carrying out the method for assembling an electrolytic capacitor according to the present invention, FIG. 2 is a partial sectional view of a direction regulating turret of a bush feeding mechanism, and FIG. 3 is a transfer turret of a capacitor element feeding mechanism. 4 is an enlarged sectional view showing the state of the capacitor element at the time of supply, FIG. 5 is a sectional view of the capacitor element loading mechanism, and FIG. 6 is a view taken along the line - in FIG. 5. A sectional view, FIG. 7 is a view taken along the line - in FIG. 5, FIG. 8 is a view showing the capacitor element being inserted into the case, and FIG. 9 is a modification of the capacitor element holder. Figure, 10th
The figure is a sectional view taken along the line - in FIG. 9, and FIG. 11 is a schematic explanatory view of the lead wire tension chuck. 2: Turret, 3, 3a: Capacitor element holder, 30: Rubber bush holding chuck, 35:
Lead wire regulation chuck, 4: Case holder, 5:
Rubber bush supply mechanism, 6: Capacitor element supply mechanism, 7: Capacitor case supply mechanism, 8: Capacitor element loading mechanism.

Claims (1)

[Claims] 1. In an electrolytic capacitor assembly method in which a capacitor element whose lead wire is inserted into a lead wire insertion hole of a rubber bushing is inserted into a case, the lead wire is inserted into a capacitor element holder provided at equal intervals around a turret that rotates intermittently. The rubber bush is held by restricting the insertion hole in a certain direction, and the capacitor element is raised from the bottom of the rubber bush with the lead wire facing upward and aligned with the insertion hole. Pass the lead wire into the insertion hole, hold the lead wire from above the rubber bushing, pull up the lead wire together with the capacitor element, fit the tab of the capacitor element into the insertion hole, and insert it into the periphery of the turret. A capacitor case is held in a case holder provided between adjacent capacitor element holders, and the capacitor element with a rubber bush held in the capacitor element holder is transferred into the capacitor case during intermittent stops of the turret. How to assemble an electrolytic capacitor.