JPH01303715A - Separator punching device - Google Patents

Abstract

PURPOSE:To make it possible to quickly and accurately place the separator, which is punched out by a punch, on the electrode located on a cell case by a method wherein an air-bleeding hole, with which the air located inside the die is bleeded, is perforated. CONSTITUTION:An air bleeding hole 16 is perforated on the upper section of a stopper 15 of a die 13. When a first movable plate 18 is lowered and a separator 2a is punched out from a cardboard 2 by a punch 19, the raw material paper 2 is punched by a flange 19b, and in this state, the separator 2a is punched out by a punching blade 19a and a cutting blade 14. Then, a second movable plate 21 is lowered, the separator 2a is punched down toward the electrode 5 by a knock-out pin and it is placed on the electrode 5. As the air- bleeding hole 16 is provided on the die 13 as above-mentioned, the separator 2a can be dropped on the electrode 5 quickly without inclination.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention involves punching out a separator from a base paper to be inserted between each polarizable electrode of an electric double layer capacitor cell.
It is installed in a separator punching device that is placed on an electrode attached to a cell case.

[Conventional technology]

An electric double layer capacitor cell has a cell case on the main body side and a cell case on the cap side made of stainless steel, for example, and polarizable electrodes are attached to the bottom of each of them via a conductive adhesive, and there is a wire between the electrodes. In addition to interposing a separator, a gasket is placed inside the cell case on the main body side,
By combining both cell cases and caulking their peripheries, l! be left behind.

In this manufacturing process, the separator is punched out from the base paper and placed on one of the electrodes before the two cell cases are assembled. A conventional example of the punching device is shown in FIG.

That is, the punching device includes a die 1 made of a cylindrical body having a cutting blade 1a at its upper edge, and a punch 3 for punching out a separator 2a from a base paper 2 between the die 1 and the cutting blade 1a.

A polarizable electrode 5 is attached to the bottom of the cell case 4 via a conductive adhesive in the previous process, and the cell case 4
is raised from below the die 1 to a predetermined height using a knock pin 6. After that, the punch 3 descends and punches out the separator 2a from the base paper 2.
a is placed on the electrode 5.

[Problem to be solved by the invention]

However, according to the above conventional example, when the separator 2a is punched out by the punch 3, the inside of the die 1 is
Since the separator 2a is closed by the cell case 4 and the cell case 4, the separator 2a falls slowly.

Therefore, a certain amount of waiting time is required, resulting in poor productivity. Furthermore, in some cases, the separator 2a may fall diagonally and not be accurately placed on the electrode 5.

This invention was made in view of the above-mentioned conventional drawbacks, and its purpose is to punch out a separator so that the separator punched out with a punch can be quickly and accurately placed on the electrode of a cell case. The goal is to provide equipment.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention includes a die consisting of a cylindrical body having a cutting blade on its upper edge, into which a cell case is inserted from below at a predetermined height position, and a die with a cutting blade of the die. The die includes a punch for punching out a separator from the base paper in between, and the die is characterized by having an air vent hole for releasing air inside the die.

[For production]

According to the above configuration, the separator punched with a punch quickly and accurately falls onto the electrode without tilting.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2. Components that are the same as those in FIG. 3 described above are given the same reference numerals.

This separator punching device consists of a base 11 provided at a predetermined height position on a turntable 10 for transporting cell cases.
It is equipped with A die 13 is attached to this base 11 via a mold holder 12. The die 13 is a cylindrical body having a cutting blade 14 at its upper edge. Same die 13
Inside is a cell case 4 that is pushed up by a knock bottle 6.
A stopper 16 is formed which comes into contact with the upper edge of the plate and determines its height position. In this embodiment, the stopper 15 has a large diameter portion 13a on the lower end side and a small diameter portion 13b on the upper end side.
It consists of a shoulder-shaped step formed at the border. According to the present invention, the die 13 is provided with an air vent hole 16 above the stopper 15, preferably in the vicinity thereof.

At least one air vent hole 16 is sufficient, but preferably a plurality of air vent holes 16 are provided at equal intervals.

At least one pair of first guide shafts 17.
A first movable plate 18 is provided which moves up and down along the first movable plate 17, and a punch 19 is attached to the first movable plate 18. The lower end of the punch 19 fits into the upper end opening of the die 13, and cuts the separator 2 from the base paper 2 between it and the cutting blade 14.
A protruding blade 19a for punching out a, and a flange 19b for holding down the base paper 2 when punching the base paper 2 are formed.

At least one pair of guide shafts 20.2 are disposed on the first movable plate 18.
A second movable plate 21 that moves up and down along 0 is provided. A knockout bottle 22 is attached to the movable plate 21, which is inserted through the center of the punch 19 and can be retracted from the protruding blade 19a of the punch 19.

Note that the first and second movable plates 18.21 are each driven by, for example, an air cylinder (not shown). Also,
A spring 23 is wound around the first guide shaft 17 to urge the first movable plate to a predetermined initial height position. On the other hand, base paper 2
is in the form of a band, and is intermittently or continuously fed between the punch 19 and the die 13 by a feeding means (not shown).

Next, the operation of this device will be explained. First, the cell case 4 on the turntable 10 is inserted into the die 1 with the knock bottle 6.
3 to a height position where it abuts against the stopper 15 (see FIG. 1). Next, the first movable plate 18
descends and the punch 19 removes the separator 2a from the base paper 2.
is punched out. At this time, the base paper 2 is pressed down by the flange 19b, and in this state, the protruding blade 19a and the cutting blade 1
4, the separator 2a is punched out. After that, the second movable plate 21 descends, and the knockout bin 2
2, the separator 2a is pushed down toward the electrode 6,
It is placed on the same electrode 5 (see FIG. 2). In this case, since the die 13 is provided with the air vent hole 16, the separator 2a quickly falls onto the electrode 5 without tilting. When this work is completed, the knock bin 6 is lowered and the cell case 4 is returned onto the turntable 10, and the first and second movable plates 18.21 are raised to prepare for the next punching work. Also,
The base paper 2 is also fed by one pitch by a feeding means (not shown).

〔Effect of the invention〕

As explained above, according to the present invention, a separator punched from base paper can be quickly and accurately placed on the electrode of a cell case, thereby reducing the defective rate and improving productivity. can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view of a main part of the same embodiment, and FIG. 3 is a sectional view of a conventional example. In the figure, 1.19 is the die, 2 is the base paper, 4 is the cell case, and 5
1 is a polarizable electrode, 6 is a knock bottle, 10 is a turntable, 11 is a base, 14 is a cutting blade, 15 is a stopper, 1
6 is an air vent hole, and 22 is a knockout bottle. Figure 1 Figure 3-18 Figure 2

Claims (3)

[Claims] (1) In a separator punching device that punches out the separator interposed between each polarizable electrode of an electric double layer capacitor cell from its base paper and places it on the electrode attached to the cell case, a cutting blade is attached to the upper edge of the separator punching device. The die includes a die into which the cell case is inserted at a predetermined height position from below, and a punch for punching out the separator from the base paper between the cutting blade of the die. A separator punching device characterized by having an air vent hole for releasing internal air. (2) The separator punching device according to claim 1, wherein a stopper is formed in the die to abut against the upper edge of the cell case to determine its height position. (3) The separator punching device according to claim 1, wherein a knockout pin is inserted into the punch to push down the separator punched by the punch onto the polarizable electrode.