JPS6211216A - Method and apparatus for peeling metal film of metalic plastic film capacitor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method and apparatus for automatically stripping a metal film of a metallized plastic film capacitor.

<Prior Art> The present invention relates to a method and apparatus for automatically stripping a metal film of a metallized plastic film capacitor.

<Prior Art> As is well known, a metallized plastic film capacitor is made by depositing a metal film such as aluminum on one side of an extremely thin plastic film. In such a capacitor, when wound up, there is a portion (referred to as a margin) where the metal film is not deposited on both sides or one side in the longitudinal direction to prevent the lead wire from coming into contact with the overlapping metal film and causing a short circuit. be. However, the metal film and the plastic film are cut at the same end at the required number of turns.

<Problems to be solved by the invention> In conventional capacitors, the terminals of the metal film and the plastic film are at the same end. When winding up the coil, the metal films come into contact with each other at the beginning of the winding, causing a short circuit. There was a difference. Further, at the end of the winding, the ends of the plastic film are thermally welded to prevent them from unwinding, but because the plastic films are not brought into contact with each other by the metal film, thermal welding is not possible. In order to make this welding possible, an auxiliary film of a required length is inserted at the end of the winding, and this auxiliary film is wound several times and then heat welded. Therefore, in the winding process that requires high productivity, it is necessary to create a phase difference at the beginning of the winding and to insert an auxiliary film at the end of the winding.
The above work was a bottleneck.

Means for Solving the Problems> In order to solve the above-mentioned conventional problems, the method of the present invention supplies a positive or cathode voltage to the metal film of a metallized plastic film capacitor that is run by a winding machine. A negative or anode voltage is applied to the metal film from the power supply section at the winding side position.

The device also includes an electrode roller that contacts the metal film of the metallized plastic film capacitor that is run by the winder and supplies a positive or cathode voltage to the metal film, and a metal film at a position on the winding side from the electrode roller. A wire for applying a negative or positive voltage that is moved and comes into contact with a metal film across the running direction of the plastic film capacitor, and a means for bringing this wire into contact with and separating it from the metal film. It is.

Function> The present invention supplies a positive or cathode voltage to the metal film of a traveling capacitor, and applies a negative or anode voltage to the metal film from this power supply part at the winding side device. Sparks are generated in the metal film, which causes destruction of the plastic film and the metal film on the deposited surfaces, causing the metal film to peel off.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. In FIGS. 1 and 2, 1 is a metallized plastic film capacitor (hereinafter referred to as a dicapacitor), in which a metal film 1b such as aluminum is deposited on a plastic film la. 2 is a capacitor in a winding machine. 1 is a turn roller; 4 is an electrode roller; 3 is the electrode roller 4;
A pressure roller approaches and separates from the pressure roller, and 5 indicates a guide roller.

A positive or cathode voltage is applied to the electrode roller 4, and the capacitor 1 is connected so that the metal film 1b runs in contact with the electrode roller 4. A wire 6 is arranged so as to be fed and moved by a feed roller 8 so as to intersect with the running direction of the capacitor 1 on the side of the metal film lb at a position closer to the winding side from the position of the electrode roller 4 .

This wire 6 is energized with a negative or anode voltage that is symmetrical to the pole energized to the electrode roller 4 . This wire 6 is connected to the metal film 1b only when necessary for peeling off the metal film 1b.
contact, and are usually spaced apart. The means for bringing the wire 6 into contact with the metal film 1b is to automatically move the wire 6 up and down using a vertical movement device, or to bring the wire 6 into contact with the metal film 1b.
is arranged to be spaced apart from the metal film 1b, and the pressing roller 7 arranged on the upper surface of the capacitor is moved downward, and the capacitor 1 is
A mechanism in which the wire 6 is pressed against the wire 6 is satisfactory.

Since the present invention has the above-mentioned configuration, the metal film 1b of the capacitor 1 that is being wound up is energized by the electrode roller 4, which is the power supply section, but as long as the wire 6 does not come into contact with the metal film 1b. is wound up as is. However, in the portions corresponding to the beginning and end of winding of the capacitor 1 where the metal film 1b needs to be peeled off, the wire 6 is raised or the capacitor 1 is pressed against the wire 6 side by the pressing roller 7 to separate the metal film 1b. By bringing them into contact, sparks are generated in the metal film 1b, a destructive phenomenon occurs on the vapor deposition surface with the plastic film 1a, and the metal film 1b is peeled off A. Therefore, the peeling length of the metal film 1b is the length of the wire 6
is the period during which the wires 6 are in contact with each other, and the length of the peeling dimension can be arbitrarily determined by the contact and separation times of the wires 6. Further, the wire 6 that has come into contact with the metal film 1b is fed and moved by the feed roller 8, so that a new portion of the wire 6 is always brought into contact with the metal film 1b.

<Effects of the Invention> As described above, the present invention electrically processes and peels off the metal film of a capacitor running on a winding machine by applying a voltage to the metal film, so it is particularly necessary. The metal film can be peeled off to the required length at the beginning and end of the winding automatically during the winding operation, which has a special effect of significantly improving productivity. Since the wire is fed and moved in a direction transverse to the running direction of the capacitor and is brought into contact with the metal film, the end of the metal film is obtained as if it were cut in a direction perpendicular to the longitudinal direction.
Furthermore, since the wire that comes into contact with the metal film is always a new part, the peeled metal film does not stick to the plastic film again, which has the advantage of improving peeling accuracy and producing a capacitor of good quality. .

[Brief explanation of the drawing]

FIG. 1 is a side view of essential parts showing an embodiment of the present invention, and FIG. 2 is a perspective view thereof. DESCRIPTION OF SYMBOLS 1... Capacitor, 1a... Plastic film, ■b... Metal film, 4... Electrode roller, 6... Wire, 7... Press roller.

Claims (2)

[Claims] (1) A positive or cathode voltage is supplied to the metal film of a metallized plastic film capacitor that is run by a winder, and a negative or anode voltage is applied to the metal film from this power supply section at a position on the winding side. A method for stripping metal films from metallized plastic film capacitors. (2) An electrode roller that contacts the metal film of the metallized plastic film capacitor that is run by the winder and supplies positive or cathode voltage to the metal film, and a metallized plastic film at a position on the winding side from the electrode roller. The capacitor is characterized by comprising a wire for applying a negative or positive voltage that is moved and brought into contact with the metal film crossing the running direction of the capacitor, and a means for bringing the wire and the metal film into contact with each other and separating them. Metal film stripping equipment for metallized plastic film capacitors.