JPS6255291B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for inserting rubber into an electrolytic capacitor, and in particular, inserts rubber into an aluminum tab of a lead wire to about half the plate thickness, and separates the tip of two lead wires with an arrow. By simultaneously pushing the lead wire into the case into which the element is inserted and the aluminum tab while being held separately through the rubber tab, separation and grip of the lead wire are ensured, and the occurrence of defective products due to the pushing of the rubber is prevented. This invention relates to a method and device for rubber inserting an electrolytic capacitor.

Conventionally, in the rubber insertion process of electrolytic capacitors, the pitch of the two lead wires and the pitch of the holes in the rubber may be slightly different, and if the pitch of the rubber holes is smaller than the pitch of the lead wires, the lead wires may be pulled together by the rubber, causing the tips to bend and cross each other, or the rubber may be inserted into the case at an angle. On the other hand, if the pitch of the holes in the rubber is larger than the pitch of the lead wire, the pitch of the lead wire is enlarged, causing the lead wire to curve. In addition, since rubber was inserted into the lead wire in the state of an electrolytic capacitor element, if the rubber was forcibly inserted into the lead wire, the terminal part of the lead wire would peel off from the aluminum foil, and the lower end of the lead wire would be attached to the electrolytic capacitor. The electrolytic capacitor element protrudes from the lower end of the element, and when the electrolytic capacitor element is inserted into the case, the lower end of the terminal portion comes into contact with the case, resulting in a short circuit.

Furthermore, Japanese Patent Publication No. 56-34088 discloses a capacitor bush mounting device, but this conventional example simply discloses a technique of inserting rubber into the lead wire while holding the lead wire and the capacitor element. , the two lead wires are lined up and held by pressing them from both sides with a pair of gripping arms, the rubber is completely inserted into the lead wires at once, and the rubber is inserted into the capacitor case. This invention is completely different from the present invention in the points not mentioned above, and there is a possibility that the separation and gripping of the two lead wires may become uncertain, so there is room for improvement.

On the other hand, the rubber bushing mounting device disclosed in Japanese Patent Application Laid-Open No. 1978-14 only discloses a technique for simply inserting the rubber into the lead wire, similar to the above-mentioned conventional example. Since it is similar,
There is a risk that separation of the lead wire and its grip may become uncertain, and there is still room for improvement.

The present invention was made in order to eliminate the above-mentioned drawbacks of the prior art, and its purpose is to create an electrolytic capacitor element in which rubber inserted into a lead wire is pushed into an aluminum tab about half the thickness of the lead wire. After inserting the lead wire into the case of the electrolytic capacitor, hold the tip of the lead wire with a clamp device and push the rubber into the case of the electrolytic capacitor with a pushing device to adjust the pitch of the hole in the rubber and the pitch of the lead wire. Even if the lead wires are different, the lead wires should not be bent or crossed. Another purpose is to completely eliminate the shearing force between the aluminum foil and the terminal part that is integral with the lead wire, which is caused by the frictional force between the rubber hole and the aluminum tab of the electrolytic capacitor element when the rubber is pushed in. The purpose of this is to prevent the terminal from peeling off from the aluminum foil even if the frictional force between the rubber hole and the aluminum tab is quite large. The purpose is to eliminate the risk of the terminal portion coming into contact with the case and to prevent short circuits of the lead wires.

Still another purpose is to insert the rubber into the aluminum tab of the lead wire to about half the plate thickness and push it into the case with the electrolytic capacitor element and case fixed, so that the rubber is attached to both the aluminum tab and the case. At the same time, the purpose is to allow the rubber to be inserted easily, and thereby to improve the production efficiency of the rubber insertion process. Another purpose is to insert a separation arrow between two lead wires, sandwich the separation arrow, and separately grasp the vicinity of the tip of each lead wire with a pair of clamp members placed on both sides of the separation arrow. Therefore, the two lead wires can be completely separated and the shape of the lead wires can be adjusted, and even if the lead wires have some bends or variations in diameter, they can be held securely. It is to be.

In short, the method of the present invention involves inserting the rubber into the lead wire of an electrolytic capacitor element so that about half of the thickness of the rubber plate is pushed into the aluminum tab, inserting the electrolytic capacitor element into the case of the electrolytic capacitor, and then opening the case. A separation arrow is inserted between the two lead wires, the separation arrow is held between the lead wires, and the vicinity of the tip of each lead wire is gripped separately by a pair of clamp members arranged on both sides of the separation arrow. , the rubber is pushed into the aluminum tab and the case simultaneously by lowering a pair of pushing members and pressing the rubber downward.

The device of the present invention also includes a chuck device that is placed on a turntable and grips a case of an electrolytic capacitor, and a separation device that includes a separator that is inserted between two lead wires of the electrolytic capacitor and separates the lead wires. A separating arrow is placed in the next step of the separating device and inserted between the two lead wires to separate each lead wire, and a separating arrow is placed on both sides of the separating arrow to sandwich the separating arrow and separate the lead wires near the tip of each lead wire. a clamping device comprising a pair of clamping members that press against a separation arrow to separately grip each lead wire; and a clamping device that presses a rubber inserted into an aluminum tab about half of the plate thickness of the lead wire, and presses the aluminum tab. and a pushing device for simultaneously pushing the rubber into the case.

The present invention will be explained below based on embodiments shown in the drawings. 4, 5, 7, and 8, the electrolytic capacitor rubber insertion device 1 according to the present invention includes a chuck device 2, a separating device 3, a clamping device 4, and a pushing device 5. We are prepared.

The chuck device 2 is mounted on a turntable 8 that rotates intermittently in the direction of arrow A in FIG. 7 about a pivot (not shown).
As shown in the figure, a chuck 10 opens by pressing a pair of buttons 9, and closes when the pressing is released.

The separating device 3 includes a sliding member 1 as shown in FIG.
1 and a separator 12, the sliding member 11 is slidably supported on a base 13, and the roller 14 pivotally attached to the left end of the sliding member in FIG. It is pressed into contact with a spring (not shown) and is driven. The separator 12 is the seventh
In the figure, it is fixed to the right end of the sliding member 11, and the tip is formed in a V shape.

As shown in FIGS. 4 to 8, the clamp device 4 includes a slider 18, a connecting rod 19, a pressing member 20, a pair of clamp members 21, and a separation arrow 2.
2, and the slider 18 is separated into an upper slider 24 and a lower slider 25.

The lower slider 25 is slidably supported by a fixing member 26, and in FIG.
is fixed, and the stopper screw can come into contact with the base 13. The upper slider 24 is placed on the top surface of the lower slider 25, and the connecting pin 28 planted on the top surface of the lower slider is inserted into a long hole 24a formed in the upper slider 24.

The connecting rod 19 is slidably inserted through a ball bearing 30 into a mounting member 29 fixed to the top surface of the upper slider 24, as shown in FIGS. 5 and 7. The middle left end is pivotally attached to the sliding member 11 by a pivot 31. In addition, a compression spring 34 is interposed between a collar 32 fixed to the connecting rod 19 on the left side in the drawing of the mounting member 29 and a retaining ring 33, and a connection protruding to the right in the drawing of the mounting member 29. Color 35 for rod 19
is fixed.

In FIGS. 5 and 7, the pressing member 20 has a central portion pivotally attached to the right end of the upper slider 24 in the drawings by a pivot 38, and pressing portions 20a are formed at both ends of the pressing member. There is. The pair of clamp members 21 are pivotally attached to the lower slider 25 by pivots 39, and opposing clamp parts 21a are formed at one end thereof, and a roller abutting against the pressing part 20a of the pressing member 20 is formed at the other end. 40 are each pivotally mounted. Also, as shown in Figure 7,
Compression springs 41 are interposed in recesses 21b formed on opposing inner surfaces of the pair of clamp members 21, and the compression springs cause the clamp members 2
1 is biased so that each clamp portion 21a is opened, and the roller 40 of the clamp member 21 is pressed by the pressing portion 20a of the pressing member 20. The separation arrow 22 is fixed to the lower slider 25 so as to be disposed between the pair of clamp members 21, and its tip 22a is formed in a V shape.

The lower slider 25 is connected to the upper slider 24.
When the clamp member 21 moves in the direction of arrow B via the connecting rod 19, the clamp member 21 is pressed by the pressing member 20 and moves integrally with the upper slider 24.

The pushing device 5 includes an air cylinder 45, which is an example of an output device, a slider 46, and a set of claw members 4.
7, 48, and a pair of pushing members 49, the air cylinder 45 is fixed to a bracket 51 fixed to the base 13, and a pushing member 52 is slidably supported on the air cylinder. ing.

The slider 46 is divided into an upper slider 53 and a lower slider 54.
is slidably supported by a recess 51a formed in the bracket 51 via a large number of balls 55,
One of the balls 55 is pressed by a play adjustment member 56, so that the upper slider 53 can slide vertically in the recess 51a of the bracket 51 without play in the vertical direction in FIG. There is. Further, the top surface of the upper slider 53 is arranged at a position facing the pressing member 52 (FIG. 8). The lower slider 54 is integrally fixed to the upper slider 53. Further, as shown in FIG. 8, pins 5 are implanted in the lower slider 54 and the bracket 51, respectively.
A tension spring 61 for the slider is mounted between the upper and lower sliders 9 and 60, and the upper and lower sliders 53 and 54 are biased to be pulled upward in FIG. There is.

A pair of claw members 47 and 48 are each pivotally connected to the lower slider 54 by a pivot 62, and a tension spring 64 for the claw members is inserted between pins 63 implanted in each of these claw members. The claw members 47 and 48 are mounted and urged by the tension spring so as to be drawn toward each other. Furthermore, stepped portions 47a and 48a are formed on the opposing inner surfaces of the claw member, respectively, and as shown in FIG. A tension spring 6 for the slider is attached to the provided stopper pin 66.
They are in contact with each other with a spring force of 1. Note that the spring force of the tension spring for the slider is always set to be greater than the spring force of the tension spring 64 for the pawl member. As shown in FIG. 4, the pair of push-in members 49 are fixed to the lower ends of the claw members 47 and 48 by set screws 67, respectively, and the lower surface of the tip part has a
Each protrusion 68 is integrally formed.

The present invention is configured as described above, and its operation will be explained below. First, as shown in FIG. 1, rubber 72 is inserted into the two lead wires 71 of the electrolytic capacitor element 70, and as shown in FIG.
The rubber is attached to the electrolytic capacitor element 7 about half of its board thickness.
Aluminum tab 71a of lead wire 71 protruding from 0
Push it into. In this way, attach the rubber 72 to the lead wire 71.
The electrolytic capacitor element 70 with the inserted
0a is the bottom surface 73a of the case 73 of the electrolytic capacitor
Insert until it touches the Next, the chuck 10 is opened by pressing the button 9 of the chuck device 2 disposed on the turntable 8, and the case 73 is inserted into the chuck. When the button 9 is released, the chuck 10 opens the case 73. be grasped.

In this state, as shown in FIG. 7, the sliding member 11 of the separating device 3 slides in the direction of arrow C by the cam body 15, and the separator 12
inserted in between. This corrects the crossing caused by the bending of the lead wire 71. When the lead wire 71 has been corrected by the separator 12, the sliding member 11 is slid by the cam body 15 in the direction of arrow D in FIG. As a result, the separator 12 separates from the lead wire 71. Then, the turntable 8 rotates in the direction of arrow A, and the electrolytic capacitor element 70 moves together with the case 73 directly below the clamp device 4.

In this state, the cam body 15 rotates and the sliding member 1
The connecting rod 19 is moved via the first roller 14 in the direction of arrow B, as shown in FIGS. 5 and 7, until the stopper screw 27 abuts against the fixing member 26. Along with this movement, the upper slider 24 and lower slider 25 also move in the same direction, and the separation arrow 22
The clamp members 21 are inserted between the lead wires 71 of the book, and are placed on the outside of the lead wires 71 with the separation arrow 22 in between.

When the stopper screw 27 comes into contact with the fixing member 26, the movement of the lower slider 25 is restricted, and only the upper slider 24 resists the spring force of the compression spring 34 to close the gap C between the elongated hole 24a and the connecting pin 28. 5) in the direction of arrow B. After this, the spring force of the compression spring 34 causes the roller 40 of the clamp member 21 to move toward the pressing part 22 of the pressing member 20.
0a against the spring force of the compression spring 41, and the clamp member 21 is moved in the direction of arrow E in FIG.
The tip of the lead wire 71 is elastically held by the cooperative action of the clamp 21a and the separation arrow 22.

The lower slider 25 to which the clamp member 21 and the separation arrow 22 are attached stops when it moves to a predetermined position, and then the clamp member 25 is moved only by the upper slider 24 using the spring force of the compression spring 34 as the driving force. 21 is pressed and the lead wire 71
The vicinity of the tip of the clamp part 21a of the clamp member
At this time, the pressing member 20
is adapted to swing around the pivot 39, so that even if there is some variation in the wire diameter of the lead wire 71, the pressing force of the clamp member 21 of the pressing member 20 can be reliably obtained.

Next, the air cylinder 45 is activated, and the pressing member 5
2 is pressed in the direction of arrow F in FIG. 8, and the upper slider 53 and lower slider 54 also descend in the same direction. Then, the engagement between the top surface 47b of the claw member 47 and the stopper pin 66 is released, and the claw members 47, 4 are disengaged from each other.
8 is pulled by a tension spring 64. In this state, as shown in FIG. 3, the protrusion 68 of the pushing member 49 presses the rubber 72 and pushes it into the case 73.

After completing this rubber insertion process, press the air cylinder 4
5, the pressing member 52 returns to the position shown in FIG. 8, and the upper slider 53 and lower slider 54 also return to the positions shown in FIG. top surface 47b of
comes into contact with the stopper pin 66 again, and the claw members 47 and 48 are again in the open state as shown in the figure.

At the same time, the clamp device 4 also returns to the state shown in FIGS. 5 and 7. When the step of rubber-inserting the electrolytic capacitor is completed in this manner, the turntable 8 is further rotated intermittently in the direction of arrow A, and the next step, for example, curling, is performed.

As described above, according to the present invention, the vicinity of the tip of the lead wire 71 is connected to the clamp portion 21a of the clamp member 21.
The rubber 72 inserted into the lead wires 71 is pressed by the protrusion 68 of the pushing member 49, and pushed into the aluminum tab 71a and the case 73. Even when the pitch between the holes and the holes in the rubber 72 do not match and the frictional force between the holes in the rubber 72 and the aluminum tab 71a is quite large, the elasticity of the rubber 72 allows the two lead wires 71 to The rubber 72 is pushed into the case 73 with almost no deformation, so there is no bending or crossing of the lead wire 71, and no shear force is generated between the terminal portion 71b of the lead wire 71 and the aluminum foil. So lead wire 71
A defective product in which the aluminum tab 71a is peeled off from the aluminum foil, the terminal portion 71b comes into contact with the case 73, and the positive and negative lead wires 71 are short-circuited does not occur.

Since the present invention is constructed and operates as described above, after inserting an electrolytic capacitor element in which the rubber inserted into the lead wire is pushed into an aluminum tab about half the thickness of the lead wire into the case of the electrolytic capacitor, the lead wire is inserted into the case of the electrolytic capacitor. The rubber gripped near the tip by a clamp device is pushed into the case of the electrolytic capacitor by a pushing device, so even if the pitch of the holes in the rubber and the pitch of the lead wires are different, there is no possibility of bending or bending the lead wires. This has the effect that no intersection occurs.
In addition, there is no shearing force between the aluminum foil and the terminal part integrated with the lead wire, which is caused by the frictional force between the rubber hole and the aluminum tab of the electrolytic capacitor element when the rubber is pushed in. Even if the frictional force between the rubber hole and the aluminum tab is quite large, the terminal part will not peel off from the aluminum foil.
In addition, there is no risk that the terminal portion will come into contact with the case, which has the effect of preventing short circuits of the lead wires, and has the effect of significantly reducing the occurrence of defective products.
Furthermore, since the rubber inserted into the aluminum tab of the lead wire to about half the plate thickness is pushed into the case with the electrolytic capacitor element and case fixed, the rubber can be easily inserted into both the aluminum tab and the case at the same time. As a result, the production efficiency of the rubber filling process can be improved. In addition, a separation arrow is inserted between the two lead wires, and a pair of clamp members placed on both sides of the separation arrow are used to hold the tip of each lead wire separately. This has the effect that the lead wires can be completely separated and the shape of the lead wires can be adjusted, and that even if the lead wires have some bends or variations in diameter, they can be held securely.

[Brief explanation of the drawing]

The drawings relate to embodiments of the present invention, and include FIGS. 1 to 3.
The figure shows the rubber insertion process of an electrolytic capacitor.
The figure shows a front view of an electrolytic capacitor element with rubber inserted into the lead wire, Figure 2 is a partial cross-sectional front view showing the lead wire separated by the separator of the separation device, and Figure 3 shows the tip of the lead wire held by the clamp device. A partial cross-sectional front view showing the state in which the rubber is pushed into the case by the gripping and pushing device, FIG. 4 is a perspective view of the rubber inserting device for an electrolytic capacitor according to the present invention, and FIG. 5 is a side view of the device shown in FIG. 4. 6 is a cross-sectional view of FIG. 5 in the direction indicated by arrows, FIG. 7 is a plan view of the structure shown in FIG. 4, and FIG. 8 is a front view of FIG. 5 in the direction of arrows. 1 is a rubber insertion device for electrolytic capacitors, 2 is a chuck device, 3 is a separation device, 4 is a clamp device, 5
is a pushing device, 8 is a turntable, 10 is a chuck, 12 is a separator, 21 is a clamp member,
22 is a separation arrow, 49 is a pushing member, 70 is an electrolytic capacitor element, 71 is a lead wire, 71a is an aluminum tab, 72 is rubber, and 73 is a case of the electrolytic capacitor.

Claims (1)

[Claims] 1. Insert the rubber into the lead wire of the electrolytic capacitor element so that about half the thickness of the rubber plate is pushed into the aluminum tab, insert the electrolytic capacitor element into the case of the electrolytic capacitor, and close the case. Grip and fix with a chuck, insert a separation arrow between the two lead wires, sandwich the separation arrow, and separately grip the vicinity of the tip of each lead wire with a pair of clamp members placed on both sides of the separation arrow. A method for inserting rubber into an electrolytic capacitor, comprising: lowering a pair of pushing members to press the rubber downward to simultaneously push the rubber into the aluminum tab and the case. 2. A chuck device arranged on a turntable to grip the case of an electrolytic capacitor, a separating device equipped with a separator inserted between two lead wires of the electrolytic capacitor to separate the lead wires, and a separator next to the separating device. A separating arrow is placed in the process and inserted between the two lead wires to separate each lead wire, and a separating arrow is placed between the separating arrows and placed on both sides of the separating arrow to connect the vicinity of the tip of each lead wire to the separating arrow. A clamp device includes a pair of clamp members that press and hold each lead wire separately; and a clamp device that presses a rubber inserted into an aluminum tab so that about half the thickness of the lead wire is attached to the aluminum tab and inside the case. A rubber inserting device for an electrolytic capacitor, comprising a pushing device configured to push the rubber at the same time.