JPH0620893A - Capacitor extracting device - Google Patents

Abstract

PURPOSE:To prevent defectives from being produced due to that the material of a capacitor is pulled in the inner circumference of an extracting member without losing merits that a capacitor falls off easily due to the deflection of a winding shaft. CONSTITUTION:A capacitor 1 is made to bear against extracting members 7 at the movement of a winding shaft 4, a part of the inner circumference of the member 7 is able to come into contact with the outer circumference of the winding shaft 4, and a spring 8 and an actuator 9 are provided to enable the inner circumference of the extracting member 7 to come into contact with the outer circumference of the winding shaft 4 following the movement of the winding shaft 4, so that a gap is hardly produced between the winding shaft 4 and the extracting member 7 even if the winding shaft 4 is deflected when the capacitor 1 is pulled out from the winding shaft 4 by moving the winding shaft 4. By this setup, the material of the capacitor 1 is prevented from being pulled in the inner circumference of the extracting member 7 to restrain defectives from being produced without losing merits that the capacitive element 1 is easily pulled out due to a decrease in frictional force between the capacitive element 1 and the winding shaft 4 as the winding shaft 4 is deflected because of the centripetal force of the capacitive element 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor element extracting device provided in a capacitor element winding device in a winding type capacitor element manufacturing facility.

[0002]

2. Description of the Related Art In recent years, various types of capacitor elements have been developed and manufactured. However, there is a great demand for a winding type capacitor element, and further improvement in quality and yield are required.

A conventional capacitor element extracting device will be described below with reference to FIG. In FIG.
A guide pin 23 is rotatably supported by the bearing 22. Reference numeral 24 is a winding shaft for winding and forming the capacitor element 21, and a split groove 25 for sandwiching the winding start portion of the raw material of the capacitor element 21 is formed in the axial direction.
Further, since the groove 26 formed at the tip end of the winding shaft 24 is fitted to the guide pin 23, the swinging of the winding shaft 24 is suppressed, and tension is applied to the raw material when the capacitor element 21 is wound. In addition, the centripetal force generated on the inner circumference of the capacitor element 21 suppresses the winding shaft 24 from bending toward the split groove 25. Reference numeral 27 denotes a take-out plate for the capacitor element 21, which has a take-out hole 28 having a diameter slightly larger than the outer diameter of the winding shaft 24. The winding shaft 24 can move in the hole in the axial direction. is there. Reference numeral 29 denotes an extraction shaft, and the cylinder device 30 moves the winding shaft 24 in the direction opposite to the guide pin 23 to extract the capacitor element 21.

Next, the operation of the capacitor element extracting device configured as described above will be described. First, FIG.
As illustrated in FIG. 3A, the winding shaft 24 is moved in the direction opposite to the guide pin 23 by moving the extraction shaft 29 by the cylinder device 30 from the state in which the winding and forming of the capacitor element 21 is completed. To move. Then, the winding shaft 24 is disengaged from the guide pin 23, and the centripetal force of the capacitor element 21 causes the winding shaft 24 to bend δ toward the split groove 25. As a result, the centripetal force of the capacitor element 21 becomes small, so that the frictional force between the capacitor element 21 and the winding shaft 24 becomes small, and the capacitor element 21 easily comes off. Next, the capacitor element 21 comes into contact with the extraction plate 27 to stop the movement of the capacitor element 21, while the winding shaft 2
4 continues to move, and finally the winding shaft 24 is completely removed from the capacitor element 21.

[0005]

However, in the above-described structure, when the winding shaft 24 is disengaged from the guide pin 23, the centripetal force of the capacitor element 21 causes the winding shaft 24 to bend, which reduces the centripetal force of the capacitor element 21. The frictional force between the capacitor element 21 and the winding shaft 24 is reduced, and the capacitor element 21 can be easily removed. On the contrary, the gap between the winding shaft 24 and the extraction hole 28 of the extraction plate 27 is also large. The winding shaft 24 and extraction hole 28
However, no matter how small the gap may be set, the raw material may be drawn into the extraction hole 28 of the extraction plate 27 when the capacitor element 21 is extracted.

In view of the above-mentioned conventional problems, the present invention provides a capacitor element extracting device which eliminates the disadvantage that the capacitor element is easily removed due to the bending of the winding shaft and does not cause a defect due to drawing into the inner circumference of the extracting member. The purpose is to provide.

[0007]

In the capacitor element extracting device of the present invention, the tip end of a winding shaft having a split groove formed in the axial direction is fitted into a rotatable guide pin, and the raw material is wound into the split groove. Capacitor element extractor that rotates the winding shaft with the start part clamped, and moves the winding shaft to separate the capacitor element formed by winding the raw material in the axial direction so as to separate the winding pin from the guide pin In the above, a plurality of extracting members are provided so that the capacitor element abuts when the winding shaft moves and at least a part of the inner peripheral portion can contact the outer periphery of the winding shaft, and the inner peripheral portions of these extracting members follow the outer periphery of the winding shaft. It is characterized in that a means for making contact with each other is provided.

Further, preferably, the minimum width of the split groove of the winding shaft when the winding shaft is moved is set to be larger than the thickness of the raw material.

[0009]

According to the above-described structure of the present invention, when the winding shaft is moved to extract the capacitor element from the winding shaft, the inner peripheral portion of the extracting member for abutting the capacitor element to separate it from the winding shaft, Even when the position or outer diameter of the winding shaft fluctuates, it follows that and makes contact with the outer circumference.
Even when the winding shaft is bent, no gap is generated between the outer circumference of the winding shaft and the extracting member. Therefore, the winding axis moves and disengages from the guide pin, whereby the winding axis bends due to the centripetal force of the capacitor element, and the frictional force between the capacitor element and the winding axis decreases, and the advantage that the capacitor element is easily removed is lost. In addition, it is possible to prevent the raw material of the capacitor element from being drawn into the inner circumference of the extracting member with the movement of the winding shaft, and to prevent the occurrence of defects due to the drawing.

Further, the frictional force between the capacitor element and the winding shaft is set by setting the minimum width of the dividing groove when the winding shaft is bent due to movement to be larger than the thickness of the raw material of the capacitor element sandwiched by the dividing groove. Is minimized, and the advantage that the capacitor element is easily removed due to the bending of the winding shaft can be maximized.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A capacitor element extracting device according to an embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, reference numeral 3 is a guide pin, which is rotatably supported by a bearing 2. Reference numeral 4 is a winding shaft for winding and forming the capacitor element 1.
The split groove 5 for sandwiching the winding start portion of the raw material is formed in the axial direction. Further, the groove 6 formed at the tip of the winding shaft 4 is fitted to the guide pin 3 to suppress the swinging of the winding shaft 4 and the tension applied to the raw material when the capacitor element 1 is wound. The centripetal force generated on the inner circumference of the capacitor element 1 suppresses the winding shaft 4 from bending toward the split groove 5. Reference numeral 7 designates a pair of upper and lower extracting members for extracting the capacitor element 1 from the winding shaft 4 without contacting the capacitor element 1 and deforming the wound state of the capacitor element 1. A semicircular extraction hole having a diameter slightly larger than the outer diameter of the winding shaft 4 is formed, and the winding shaft 4 is movable in the axial direction in the hole. These extraction members 7 are configured to be movable in contact with and separated from the winding shaft 4 by an actuator 9 via a spring 8, and a gap is formed between the extraction member 7 and the winding shaft 4 when forming the winding of the capacitor element 1. It is formed so as to be brought into contact with each other at the time of extraction. Further, the spring 8 follows the fluctuation of the position or diameter of the winding shaft 4 to bring the extracting member 7 into contact with the winding shaft 4. Reference numeral 10 denotes an extraction shaft, and the cylinder device 11 moves the winding shaft 4 in the direction opposite to the guide pin 3 to extract the capacitor element 1.

Next, the operation of the capacitor element extracting device configured as described above will be described. First, when the winding and forming of the capacitor element 1 is completed, FIG.
As shown in, the actuator 9 moves the spring 8 and the extracting member 7 in the direction of the winding shaft 4. In this state, the extraction member 7 follows the fluctuation of the position or outer diameter of the winding shaft 4 by the spring 8 and contacts the outer circumference of the winding shaft 4. Next, as shown in FIG. 1B, the extraction shaft 10 is moved by the cylinder device 11 to move the winding shaft 4 in the direction opposite to the guide pin 3. Then, the winding shaft 4 becomes the guide pin 3
From the above, the centripetal force of the capacitor element 1 causes the winding shaft 4 to bend toward the split groove 5, and the centripetal force of the capacitor element 1 decreases, so that the frictional force between the capacitor element 1 and the winding shaft 4 decreases, and the capacitor element 1 It becomes easy to come off. Next, the capacitor element 1 comes into contact with the extraction member 7 to stop the movement of the capacitor element 1, while the winding shaft 4 continues to move, so that the winding shaft 4 is finally completely withdrawn from the capacitor element 1. Even when the winding shaft 4 is bent, no gap is generated between the winding shaft 4 and the extracting member 7, and the raw material of the capacitor element 1 is not pulled in.

As described above, according to this embodiment, when the capacitor element 1 is separated from the winding shaft 4, the extracting member 7 for separating the wound state of the capacitor element 1 without deforming the spring element is used as the extracting member 7. Even when the position or outer diameter of the winding shaft 4 fluctuates so that the winding shaft 4 comes into contact with the winding shaft 4, the outer diameter of the winding shaft 4 and the removal of the winding shaft 4 are removed even when the winding shaft 4 bends. There is no gap between the member 7 and the centripetal force of the capacitor element 1, so that the winding shaft 4 bends, the frictional force between the capacitor element 1 and the winding shaft 4 decreases, and the capacitor element 1 easily comes off. It is possible to provide a capacitor element extracting device in which the raw material of the capacitor element 1 is not drawn into the inner circumference of the extracting member 7 without losing the temperature.

Next, another embodiment of the present invention will be described with reference to FIG. The overall configuration of this embodiment is similar to that of the embodiment of FIG. 1, and only the differences will be described.

In this embodiment, the winding shaft 4 is moved to remove the capacitor element 1, and the tip end thereof is guided by the guide pin 3.
The minimum width D of the split groove 5 of the winding shaft 4 in the state of being removed from
The thickness is set to be larger than the thickness of the raw material of the capacitor element 1 sandwiched between the split grooves 5. Therefore, the bending amount of the winding shaft 4 is adjusted by appropriately selecting the strength of the spring 8. As a result, the frictional force between the capacitor element 1 and the winding shaft 4 is minimized, and the advantage that the capacitor element 1 is easily removed due to the bending of the winding shaft 4 can be exerted to the maximum.

[0017]

According to the present invention, when the winding shaft is moved as described above and the capacitor element is extracted from the winding shaft, the inner circumference of the extracting member for abutting the capacitor element to separate the capacitor element from the winding shaft. By making the portion contact the outer circumference of the winding shaft even when the position or outer diameter of the winding shaft fluctuates, the outer circumference of the winding shaft and the extraction member can be separated even when the winding shaft bends. Since there is no gap between them, the winding shaft moves and disengages from the guide pin, and the centripetal force of the capacitor element causes the winding shaft to bend, reducing the frictional force between the capacitor element and the winding shaft, and It is possible to prevent the raw material of the capacitor element from being drawn into the inner circumference of the extracting member along with the movement of the winding shaft without losing the advantage that the capacitor element is easily removed, and the capacitor element can be easily extracted and The occurrence of failure can be prevented by write.

Further, the frictional force between the capacitor element and the winding shaft is set by setting the minimum width of the dividing groove when the winding shaft is bent due to the movement to be larger than the thickness of the raw material of the capacitor element held in the dividing groove. Is minimized, and the advantage that the capacitor element is easily removed due to the bending of the winding shaft can be maximized.

[Brief description of drawings]

FIG. 1 shows a capacitor element extracting device according to an embodiment of the present invention, (a) is a front view showing a state in which a capacitor element is wound, and (b) is a front view showing an extracting operation state of the capacitor element.

FIG. 2 is a front view of a main part of another embodiment of the present invention.

FIG. 3 shows a conventional capacitor element extracting device,
(A) is a front view of the state in which the capacitor element is wound up,
(B) is a front view of the extracting operation state of the capacitor element.

[Explanation of symbols]

 1 Capacitor element 3 Guide pin 4 Winding shaft 5 Split groove 7 Extracting member 8 Spring 9 Actuator D Minimum width of split groove 5

Claims (2)

[Claims] 1. A winding shaft having a split groove formed in the axial direction is fitted into a rotatable guide pin, and the winding shaft is rotated with the winding start portion of the raw material being held in the split groove. In a capacitor element extracting device in which a capacitor element formed by winding a raw material is moved in the axial direction so as to separate the winding shaft from the guide pin and is extracted from the winding shaft, the capacitor element contacts with the winding shaft during movement. At least a part of the inner peripheral portion is provided with a plurality of extracting members capable of contacting the outer periphery of the winding shaft, and means for contacting the inner peripheral portion of these extracting members with following the outer periphery of the winding shaft is provided. Capacitor element extraction device. 2. The capacitor element extracting device according to claim 1, wherein the minimum width of the split groove of the winding shaft when the winding shaft is moved is made larger than the thickness of the raw material.