JP4012272B2 - Battery electrode sheet supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery electrode sheet supply device that supplies battery electrode sheets one by one to a processing apparatus.
[0002]
[Prior art]
In recent years, the demand for high performance and high capacity batteries has increased, and various secondary batteries such as nickel metal hydride secondary batteries and lithium ion secondary batteries have been developed and put into practical use. For example, a nickel metal hydride secondary battery is formed by sealing a spiral laminated electrode group composed of a positive electrode sheet / separator / negative electrode sheet together with an electrolytic solution in a liquid-tight manner. A felt-like sheet containing metal fibers is used for the spiral laminated electrode group.
[0003]
The felt-like sheet is cut into a desired size by a cutting machine and temporarily accumulated in a magazine. Then, a vacuum pad is inserted into the magazine from the upper opening, the uppermost electrode sheet is adsorbed and taken out. The sheets picked up and taken out one by one by the vacuum pad are conveyed to a winding device, and the sheet is wound into a spiral shape by the winding device to form a spiral stacked electrode group.
[0004]
[Problems to be solved by the invention]
However, in the conventional apparatus, the burrs of the electrode sheets temporarily accumulated in the magazine are entangled with each other, and when the uppermost sheet is adsorbed and lifted by the vacuum pad, the sheet immediately below is also lifted at a time. Multiple sheets are removed from the magazine. When a plurality of sheets are supplied to the next process at this time, various troubles occur in the production line designed to process one sheet at a time, and in the worst case, the production line is stopped. There is also.
[0005]
The present invention has been made to solve the above-described problem, and an object thereof is to provide a battery electrode sheet supply device that can reliably and stably supply electrode sheets one by one without impairing productivity. To do.
[0006]
[Means for Solving the Problems]
The battery electrode sheet supply device according to the present invention is a battery electrode sheet supply device that supplies one by one an electrode sheet containing metal fibers as a current collector, and is a sheet outlet for taking out the stacked electrode sheets a magazine having a bottom, a slide base which is substantially horizontally arranged immediately below the magazine so as to form a larger gap than one sheet of thickness of at least the electrode sheet between the sheet outlet, the A permanent magnet embedded in the slide base and attracting the lowermost electrode sheet placed on the slide base from the magazine toward the slide base, and sliding along the slide base; An extrusion means for extruding only the lowermost electrode sheet through a gap formed between the sheet take-out port and the slide base. And wherein the Rukoto.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
The electrode sheet 2 is made of felt having a thickness of 0.4 to 1.0 mm including metallic nickel fibers, each of which is cut into a rectangular shape having a width of 35 to 65 mm and a length of 60 to 140 mm. Such an electrode sheet 2 is supplied one by one from the battery electrode sheet supply device 3 toward the winding device, wound in a spiral shape, and finally becomes an electrode for a nickel metal hydride secondary battery.
[0009]
As shown in FIG. 1, a large number of electrode sheets 2 are stacked and accommodated in a magazine 4 of a battery electrode sheet supply device 3. The electrode sheets 2 are pushed out from the magazine 4 by a pusher 7 and are supplied one by one to a winding device (not shown) provided adjacent to the supply device 3.
[0010]
The inside of the magazine 4 is so smooth that it does not catch the electrode sheet 2 and is made slightly larger than the size of the electrode sheet 2. A lower portion of the magazine 4 is opened, and a sheet outlet 4a is formed here. Further, a slide base 11 is provided immediately below the magazine 4. The slide base 11 is supported by the support member 10 so that the upper surface thereof is substantially horizontal.
[0011]
The pusher 7 is attached to the slider 6, and the slider 6 is supported by the crank mechanism 5 and provided so as to be slidable along the X-axis groove of the fixing member 8. That is, when the arm of the crank mechanism 5 is swung, the pusher 7 slides in the X-axis direction together with the slider 6, and the tip of the pusher 7 moves along the upper surface of the slide base 11 to move to the lowermost electrode sheet 2. Is pushed outward.
[0012]
As shown in FIG. 2, a gap 18 is formed between the sheet outlet 4 a and the slide base 11. Since this gap 18 is larger than the thickness of one electrode sheet 2 and smaller than the thickness of two electrode sheets 2, when the lowermost electrode sheet 2 is pushed at the tip of the pusher 7, Only the electrode sheet 2 is pushed outward through the gap 18. The tip of the pusher 7 is formed to be equal to or smaller than the thickness of one electrode sheet 2. The pusher 7 is made of wear-resistant stainless steel or hard plastic.
[0013]
As shown in FIG. 3, a large number of warp correction members (permanent magnets) 12 are embedded over the entire surface of the slide base 11. Since the electrode sheet 2 is attracted toward the slide base 11 by these permanent magnets 12 and the entire surface of the sheet 2 is in close contact therewith, for example, as shown in FIG. Even if it is warped above 2b, it easily passes through the gap 18 without being caught by the magazine 4. The permanent magnet 12 is not limited to the illustrated arrangement, and may be disposed at least at the peripheral edge of the slide base 11.
[0014]
Further, a pair of clamping members 31 are provided near the outside of the gap 18. The sandwiching member 31 is supported in a swingable manner by a swing mechanism (not shown). The sandwiched electrode sheet 2 is sandwiched by the sandwiching member 31 and conveyed to a sheet processing apparatus (not shown) in the next process. It is supposed to be.
[0015]
Next, the operation of the above apparatus will be described.
When a large number of electrode sheets 2 are stacked on the magazine 4, the lowermost electrode sheet 2 is pushed by the weight of the upper sheet and is placed on the slide base 11 from the sheet take-out port 4a. The electrode sheet 2 is attracted toward the slide base 11 by the permanent magnet 12, and the entire surface of the sheet 2 is in close contact therewith.
[0016]
When the slider 6 is slid by the crank mechanism 5 and the lowermost electrode sheet 2 is pushed by the pusher 7, the lowermost electrode sheet 2 is separated from the electrode sheet 2 immediately above, and only this passes through the gap 18 and is removed. Pushed out.
[0017]
Next, the extruded electrode sheet 2 is clamped by the clamping member 31 and conveyed to a winding device (not shown) in the next process. After completion of conveyance, the lowermost electrode sheet 2 is pushed out by the pusher 7. By repeating the above operation, the electrode sheets 2 are reliably supplied one by one in the next process.
[0018]
【The invention's effect】
According to the apparatus of the present invention, the electrode sheets can be reliably and stably supplied to the next process one by one, so that the operating rate of the production line is improved and high productivity can be achieved.
[Brief description of the drawings]
FIG. 1 is a front view illustrating a part of a battery electrode sheet supply device according to an embodiment of the present invention.
FIG. 2 is an enlarged view showing a part of the battery electrode sheet supply device.
FIG. 3 is a plan view showing a slide base and a clamping member.
FIG. 4 is a partially enlarged view showing a sheet take-out port.
[Explanation of symbols]
2 ... electrode sheet, 2a ... end, 2b ... center,
3 ... Battery electrode sheet supply device,
4 ... Magazine, 4a ... Seat outlet,
5 ... Crank mechanism, 6 ... Slider,
7 ... pusher, 8 ... fixing member,
10 ... support member, 11 ... slide base,
12 ... Warp correction member (permanent magnet),
18 ... Gap,
31 ... clamping member.

Claims (1)

A battery electrode sheet supply device that supplies electrode sheets each containing a metal fiber as a current collector, one by one,
A magazine having a sheet outlet at the bottom for taking out the electrode sheets stacked and accommodated;
A slide base provided substantially horizontally directly below the magazine so as to form a gap larger than the thickness of at least one electrode sheet between the sheet outlet and the sheet outlet;
A permanent magnet that is embedded in the slide base and corrects the curvature of the sheet by attracting the lowermost electrode sheet placed on the slide base from the magazine toward the slide base;
And a pushing means that slides along the slide base and pushes out only the lowermost electrode sheet through a gap formed between the sheet outlet and the slide base. Electrode sheet supply device.

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