JPS6040182B2 - capacitor winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a capacitor winding device for winding metallized films.

With the progress of vapor deposition technology, thin metalized films with a film thickness of 3 mm or less have been developed and are being supplied to the market as metallized films, such as polyester films, in which a metal coating is vapor-deposited on the surface.

If a conventional winding device was used to wind the thin metalized film, which is the first step in manufacturing a capacitor, short circuits would occur. I understand. This is due to the fact that even if a thin film is used, the thickness of the metal film coated on this film is the same as that of conventional films, so when the metallized film is cut, the cut edges may curl. It is caused by

When winding a capacitor element using a metallized film as a material, the ends of the element are cut at the beginning and end of the winding at a lengthwise offset of several millimeters to prevent short circuits. However, as shown in Part 1, even if a pair of thin metallized films are cut to different lengths (the tip I
It was found that this was because, as shown in Fig. 2, just before the winding start part was wound around the winding core 3 (cut by 2A longer than A), curling occurred and the metal coating parts 4 came into contact with each other. . This causes a short circuit when used as a capacitor. Having discovered this phenomenon, the present invention provides a capacitor winding device that prevents curling.

When the embodiments of the present invention are established based on the drawings, 11 and 1
Reference numeral 2 denotes a clamper body for holding the winding start portions IB and 2B of the metallized films 1 and 2. A cutter 13 for cutting the metallized films 1 and 2 is attached to the lower part of one clamper body 11. A cutter receiving row 4 for a cutter 13 is provided at the lower part of the other clamper main body 12. A clamping body 1 for preventing the metallized film from becoming free is placed on the clamper bodies 1 and 2 over the entire surface of the metallized film forming the winding start points IB and 2B of the metallized film cut by the cutter 13.
Install 5. As shown in FIG. 4a, the holding body 15 may be a foam 16 such as foamed urethane, a brush body 17 made of fibrous material arranged in a brush shape, or a loop-shaped material called Velcro tape (trade name). A loop body 18 is used. The holding member 15 must be made of a material that does not damage the metal coating 4 of the metallized film. 3 is the winding core,
A groove is provided in the center, a metallized film is inserted into this groove, and as the winding core 3 rotates, an element 5 is formed on the outer periphery of the winding core.

The winding core 3 moves straight forward and backward at right angles to the plane of the paper, and the lever shaft 2
1 as a support shaft, the winding core can be swing-moved between core positions A and B. This is a three-way cutter block, and this cutter flock three-way cutter block is used to provide a shift in the length of the winding start tip portions IA and 2A of the metallized film.

A groove 31 is provided in the center of the cutter block 30, and when the cutter 13 cuts through the groove 31, the metallized films 1 and 2 are cut. Since the metallized films 1 and 2 are initially separated into left and right parts by the cutter block 301, a difference in length occurs when a portion corresponding to the width of the cutter flock is cut. The operation of the present invention will be explained below. FIG. 3 shows a state in which the clamper bodies 11 and 12 are closed.

The clamper bodies 11, 12 can be opened by swinging with a cam or the like using a lever shaft 19 as a support shaft as shown in FIG. Now, when the clamper bodies 11 and 12 are closed, the metallized films 1 and 2 are cut by the cutter 13 attached to the tip of the clamper 11. At this time, the winding core 3 is at position B, and the metallized films 1 and 2 are wound around the winding core 3 to form the element 5.
By operating the cutter 13, the Aoi film,
2 is separated into a winding start part IB, 2B and a winding end part IC, 2C. The winding end portions IC, 2C are wound around the outer periphery of the element 5, and the winding start portions IB, 2B are held by a clamping body 15 attached to the clamper body. When the element 5 is formed, the winding core 3 retreats from the B position, extracts the element 3, and moves to the A position, and then moves forward to sandwich the metalized films 1 and 2 held by the clampers 11 and 12, and then winding core 3
When the metallized film rotates counterclockwise, the metallized film winding start ends IB and 2B are wound up while being held by the clamper's holder 15. Since the winding start portions IB and 2B are hardly exposed to a free state until they are wound around the winding core 3, they are wound onto the winding core 3 without curling. Beginning of volume IB, 2B
When the winding is completed, the clamper bodies 11 and 12 are opened as shown in FIG. 5, and the winding core 3 is further rotated until it has been wound up to a preset number of times. At this time, the cutter block 30 is located at position C between the guide rollers 22 and 23, that is, between the metallized films 1 and 2. When a predetermined number of windings are completed, the position of the winding core 3 moves from A to B, and the position of the cutter flock 30 also moves from C to D, as shown in FIG.

This completes the preparation for cutting the metallized film, and the clamper bodies 11, 12 are closed as shown in FIG. The above-mentioned operation is then repeated. The present invention is a capacitor winding device configured as described above, in which the winding start part of the metallized film is held by the clamping body on the clamper body, and the winding start part is free until the winding start part is wound around the winding core. Therefore, the present invention is a winding device that can prevent curling of the metallized film and can reliably wind a thin metallized film having three or less threads in particular.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the state in which the beginning of winding is being wound around the core, Fig. 2 is a front view showing the state in which the tip of the metallized film is curled, and Fig. 3 is a front view showing the state in which the tip of the metallized film is curled. FIG. 4 is a side view showing an embodiment of the clamping body of the present invention, and FIG.
Figure b shows the brush body, Figure c shows the loop body, Figure 5 is a front view showing the state in which the clamper is open and the winding core is at position A, and Figure 6 is a front view showing the state in which the winding core has moved to position B. It is. In the drawings, 1 and 2 are metallized films, 3 is a winding core, and 5 is a metalized film.
is the element, 11 and 12 are the clamper body, 13 is the cutter, 15 is the fall holding body, and Mikawama cutter flock. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A winding core for winding a metallized film, a pair of clamper bodies for holding the winding start portion of this metallized film, a cutter attached to this clamper body for cutting the metallized film, and a cutter for cutting the metallized film. A capacitor comprising: a metallized film clamping body attached to a clamper body for clamping the film; and a cutter block for shifting the tip of the winding start of the metallized film. Winding device.