JPH0330972B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for manufacturing a high voltage capacitor.

As this kind of capacitor, the present applicant previously
As shown in the developed view in FIG. 1, a pair of dielectrics 2 on which a plurality of electrodes 1A and 1B are placed at a predetermined interval are superimposed so that some of the electrodes 1A and 1B face each other. In a series capacitor formed by winding the lead wires 3, 3 to the electrodes 1A, 1A at the starting and ending ends, metal foil is used as the electrodes 1A, 1A at the starting and ending ends, and the other electrodes 1B.
Using metallized paper or metalized plastic film as the starting and ending electrodes 1A,
An insulating film 4A is inserted between the entire surface of the electrode 1A and the dielectric 2, and the film 4A and the electrode 1B are
The film 4A is placed between the end of the film 4A and the dielectric 2.
Alternatively, a high-voltage capacitor with good withstand voltage characteristics has been proposed in which a protective insulating film 4B having a length from the end of an electrode 1B to the end of an adjacent electrode 1B is inserted and formed in series in the length direction of a dielectric.

However, unlike general wound capacitors, this high-voltage capacitor is made by cutting the electrodes to a predetermined length, placing the cut electrodes 1A and 1B in predetermined positions, and placing protective insulating films 4A and 4B in predetermined positions. Since a large number of operations are required, such as cutting the pieces to length and placing the cut pieces in a predetermined position, the winding operation must be stopped each time, and the more pieces are connected in series, the more time it takes. Therefore, it cannot be said that efficiency is good.

SUMMARY OF THE INVENTION An object of the present invention is to provide an efficient manufacturing method for high-voltage capacitors and an apparatus used to carry out the method. A method for manufacturing a series capacitor, in which a pair of capacitors are wound by overlapping each other so that a part of the electrodes face each other, and lead wires are connected to the electrodes at the starting and ending ends of the capacitors, respectively. preparing a pair of electrodes consisting of a metal foil to be wound from a delivery bobbin onto the take-up bobbin and a guide rotor that can contact the metal foil during winding and move it in the direction of the dielectric;
The metal between the pair of electrodes is erased by intermittently contacting the metal foil of the pair of electrodes with each metal surface of the pair of metallized dielectrics to be transferred, and applying current to the metal surface via the pair of electrodes. The second invention is characterized in that the pair of metallized dielectrics are overlapped and wound while forming electrodes at predetermined intervals on the dielectrics of the pair of metallized dielectrics. A metal erasing apparatus for metallized dielectrics used in the practice, wherein a pair of metallized dielectrics are disposed opposite each other at a predetermined distance along each of the paths through which the metallized dielectrics are transported, and the metallized dielectrics are disposed on a metal surface of the metallized dielectrics. A pair of electrodes that can be brought into and out of contact with each other are provided, and the electrodes contact the delivery bobbin, the take-up bobbin, the metal foil being wound from the delivery bobbin onto the take-up bobbin, and the metal foil that is being wound up. It consists of a guide rotor movable in the direction of the metallized dielectric, and is characterized in that a power source is connected between the pair of electrodes. Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 shows a developed side view of a laminate of a dielectric and an electrode of a high-voltage capacitor manufactured according to the present invention.

In the figure, reference numeral 5 denotes a dielectric material made of paper or plastic film formed by depositing aluminum or the like by vapor deposition or the like, on which a plurality of electrodes 6 are spaced at predetermined intervals, and one starting end of the dielectric material 5 and A metal foil electrode 1A to which a lead wire 3 is fixed is placed at a terminal position at a predetermined distance from the electrode 6, and the dielectric 5
Another dielectric 5 is placed on top of the two dielectrics 2, 2 so that parts of the electrodes 1A and 6 or 6 and 6 face each other.
, and further superimpose dielectric material 2 above and below it,
A high voltage capacitor is completed by winding this laminate.

This high voltage capacitor is manufactured using the manufacturing apparatus shown in FIG.

In FIG. 3, 7 ₁ , 7 ₂ , 7 ₃ , and 7 ₄ are all rolls of dielectric material 2, 8 ₁ and 8 ₂ are rolls of metallized dielectric material 9, and 10 is a metal foil 11 made of aluminum or the like.
The rolls of dielectric 2 7 ₁ , 7 ₂ , 7 ₃ ,
7 ₄ , the rolls 8 ₁ , 8 ₂ of the metallized dielectric 9 and the roll 10 of the metal foil 11 are used for winding the dielectric 2 , the metallized dielectric 9 and the metal foil 11 through the guide rotor 12 . Two metallized dielectrics 9,
A pair of electrodes 13, 13 were provided along each of the transfer paths of the metallized dielectric material 9, which were arranged opposite each other at a predetermined interval (for example, 5 cm) and which were capable of coming into contact with and separating from the metal surface of the metallized dielectric material 9. The electrode 13 includes a delivery bobbin 14, a take-up bobbin 15, a metal foil 16 wound from the delivery bobbin 14 onto the take-up bobbin 15, and the metal foil 16 that can be moved downward or upward in the drawing by a drive member (not shown). a guide rotor 17, and the metallized dielectric 9
In response to a detection output from a detector 18 (to be described later) that detects a predetermined length of After a predetermined period of time has elapsed, the drive member becomes inactive and the guide rotor 17
was raised or lowered to separate the pair of metal foils 16 from the metal surface. Thus, by applying a direct current of 35 to 50 V (approximately 40 V is optimal) between the metal foils 16 and 16 of the pair of electrodes and passing current through the metal of the metallized dielectric 9 through the metal foils 16 and 16, the electrode 13 ，
The metal between 13 and 13 is melted, and the molten metal is transferred to the winding bobbin 15 while contacting the metal of the metallized dielectric 9.
It adheres to the metal foil 16 that is wound up and disappears from the dielectric material, thereby forming an insulation interval on the metallized dielectric material 9 in accordance with the energization time. Detector 18 detects a predetermined length of metallized dielectric 9 and uses known techniques. That is, the detector 18 counts, for example, a disk having a hole on its periphery that rotates in response to the movement of the dielectric 9, a light source and a light receiver facing each other through the disk, and intermittent pulses of light from the light receiver. It consists of a preset counter.

In the figure, 19 is a cutter, and 20 is a lead wire welder.

Next, the operation of the embodiment of the present invention will be explained.

Dielectric 2, metallized dielectric 9, 9 guided rotor 1
As shown in FIG. During this time, the metal foil 11 is cut with a cutter 1 so that the metal foil 1A is placed on the dielectric 5 from which the metal has disappeared.
Cut to a predetermined length at step 9. Then, while the metallized dielectric material 9 is being transferred through the guide rotor 12, the metal foil of the electrode 13 is formed so that the dielectric material 5 in which the electrodes 6 of a predetermined length are arranged at predetermined intervals is formed. 16 is intermittently brought into contact with the metal surface of the metallized dielectric 9 as described above to eliminate the metal between the electrodes.
The pair of dielectrics 5 in which the metal is intermittently removed and the electrodes 6 are formed are then superimposed and wound together with the dielectric 2 so that a part of the electrodes 6 face each other, and the terminal end is the same as the beginning end. A metal foil serving as an electrode 1A to which a lead wire 3 is fixed is placed on the film 9 from which the metal has been removed, thereby completing a high voltage capacitor.

As is clear from the above description, according to the present invention, a pair of electrodes disposed opposite to each other on the metal surface of a metallized dielectric are brought into contact intermittently for a predetermined period of time, and current is applied to the metal through the electrodes. Since the pair of dielectrics are superimposed and wound while the metal disappears, the production efficiency of high-voltage capacitors can be significantly improved compared to the conventional method. , the electrode is in contact with a delivery bobbin, a take-up bobbin, a metal foil being wound from the delivery bobbin onto the take-up bobbin, and the metal foil in the middle of being wound, and is movable in the direction of the metallized dielectric. Since it consists of a guide rotor, the metal of the molten metallized dielectric adheres to the metal foil wound on the winding bobbin and is removed, thus ensuring the removal of metal between adjacent electrodes of the high voltage capacitor. This has the effect of making it possible to obtain a high-voltage capacitor with good performance without damaging the metallized dielectric.

[Brief explanation of drawings]

FIG. 1 is an expanded side view of a laminate of a dielectric and electrodes of a high-voltage capacitor previously proposed, and FIG. 2 is a laminate of a dielectric and electrodes of a high-voltage capacitor manufactured according to the present invention. Developed side view, 3rd
The figure shows a schematic diagram of a manufacturing apparatus used to carry out the manufacturing method of the invention. 1A, 1B...electrode, 2...dielectric, 3...lead wire, 5...dielectric on which electrode 6 is formed, 7 ₁
~7 ₄ ... Roll of dielectric material 2, 8 ₁ -8 ₂ ... Roll of metallized dielectric material 9, 10 ... Roll of metal foil 11, 13 ... Electrode, 16 ... Metal foil, 18 ... Metal A detector for detecting a predetermined length of the dielectric material 9.

Claims (1)

[Claims] 1. A pair of dielectric materials in which a plurality of electrodes are arranged at predetermined intervals, are wound so that some of the electrodes face each other, and leads are connected to the starting and ending electrodes. In the manufacturing method of a series capacitor formed by connecting wires, a sending bobbin, a winding bobbin,
A pair of electrodes are provided, each consisting of a metal foil to be wound from the delivery bobbin onto the take-up bobbin, and a guide rotor that can contact the metal foil in the middle of being wound and move it in the direction of the dielectric. The metal foil of the pair of electrodes is intermittently brought into contact with the metal surface of each of the pair of metallized dielectrics, and the metal between the pair of electrodes is erased by applying current to the metal surface through the pair of electrodes; A method of manufacturing a high-voltage capacitor, the method comprising: forming electrodes at predetermined intervals on a pair of metallized dielectrics, and then overlapping and winding the pair of dielectrics. 2 A pair of electrodes are provided along each of the paths through which the pair of metallized dielectrics are transferred at a predetermined interval and are capable of coming into contact with and separating from the metal surface of the metallized dielectric, and the electrodes comprising a bobbin, a take-up bobbin, a metal foil wound from the delivery bobbin to the take-up bobbin, and a guide rotor capable of contacting the metal foil in the middle of being wound and moving it in the direction of the metallized dielectric; A metal erasing device for a metallized dielectric used in carrying out the manufacturing method according to claim 1, characterized in that a power source is connected between the pair of electrodes.