JP2005251709A - Tab deburring unit loading type winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tab deburring loading type winding device capable of improving quality of a battery by enabling to wind up an insulator such as a cathode/anode battery element material and a separator without damaging them through dissolving and winding around of a tab after crushing a cut-across face put on the cathode/anode battery element material. <P>SOLUTION: After a tab to be a terminal is cut off, flash generated by cutting the cut-off tab part made on the battery element material is once moved by a metal stand of the cutter fitted on a face contrary to a proceeding direction of the tab, the tab is pressed on a metal stand fitted at the rear side of the cutter in the same action as the cutter used for cutting to crush the cutting flash, and then is either welded or crimped. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

    The present invention relates to a winding device. More specifically, the present invention relates to a winding device used in the manufacture of capacitors, primary and secondary batteries.

    For example, a primary and secondary battery element (hereinafter simply referred to as a battery element) such as a lithium battery includes a positive electrode current collector having a coating portion in which a positive electrode active material is provided at a predetermined interval on a metal current collector, and a metal current collector. And a negative electrode current collector having a coating portion in which a negative electrode active material is provided at regular intervals, and the positive and negative electrode current collectors (battery element materials) are wound through an insulator such as a separator. The battery element is used as a battery element and accommodated in a case.

  In the winding device for obtaining the battery element having such a configuration, the positive and negative battery element materials (raw material) and separators, such as separators, wound up in a roll shape are intermittently and intermittently sent to the winding part, The battery element is wound by a winding core to cut the positive / negative battery element material and the insulator such as a separator into a predetermined length. In the process of winding from the original fabric portion of the positive / negative battery element material, the tab serving as the terminal is welded to wind the battery element.

  Today, the thickness of insulators such as positive and negative electrode battery element materials and separators has been reduced, and cut burrs generated by cutting tabs serving as terminals have damaged the materials and hindered the improvement of battery element quality.

  After cutting the above-described tab into a predetermined length and then welding it to the positive / negative electrode battery element material without processing the cut portion, the tab burr generated by cutting may be caused by the positive / negative electrode battery element material, separator, etc. The insulator is damaged and the quality of the battery cannot be improved.

  The present invention solves these problems, and after crushing the cut surface entering the positive / negative electrode battery element material, the tab is dissolved and wound to wind the insulator such as the positive / negative electrode battery element material and the separator. The battery can be wound up without damaging the battery, and the quality of the battery can be improved.

  In order to solve the above-mentioned problem, in the present invention, after cutting the tab to be the terminal, the burr generated by the cutting is once moved to the metal base attached to the opposite side of the traveling direction of the tab of the cutter used for cutting. In the same operation as the cutter used for cutting, the tab is pressed with a metal base to crush the cut burr.

  With this mechanism configuration, the quality of the secondary battery element can be uniformly and accurately raised without damaging the insulation of the positive and negative battery element materials and the separator. Furthermore, by attaching a press stand to crush the cut burr on the back side of the cutter, crushing the cut burr with less space and little operation, it is possible to shorten the process and reduce production costs, and to wind up high-quality battery elements. .

The present invention is as described above, crushing the cut burr generated in the step of cutting the tab, it is possible to wind up without damaging the positive and negative battery element material and the insulator such as the separator, and space-saving, With fewer operations, the process can be shortened, the production cost can be reduced, and the quality of the battery can be improved.

Embodiments of the present invention will be specifically described with reference to the drawings. As shown in FIG. 1, when cutting the tab, the upper blade 1a, the lower blade 1b, and the press stand 1c are configured. The upper blade 1a operates downward to cut the inserted tab 1d, The upper blade 1a returns to the original position.

  Next, the cut surface 1e of the cut tab 1d is moved to the press table 1c, and the tab cut burr on the cut surface is crushed by the operation of operating again below the upper blade 1a, so that the upper blade 1a returns to its original position. Thereafter, the tab is moved to the positive / negative battery element material 1f and the welding operation is repeated.

In FIG. 2, the tab 2d is inserted into the positions of the upper blade 2a and the lower blade 2b, and the upper blade 2a moves downward so that the upper blade 2a and the lower blade 2b intersect to cut the tab 2d. Thereafter, the upper 2a moves upward to complete the cutting operation.
Next, the operation of the cut burr generated by cutting will be described.
The cut tab 2g moves the cut surface to the press table 2c, and the press table 2c moves downward to crush the cut burr generated by the cutting. Thereafter, the press table returns to the original position, and the operation of tab burr crushing is completed.

  It is a schematic block diagram of the mechanism of the tab cut part which concerns on embodiment.   It is a figure which shows the operation | movement process of a structure.

Explanation of symbols

1a Upper blade 1b Lower blade 1c Press stand 1d Tab 1e Cutting surface 1f Material such as battery element 2a Upper blade 2b Lower blade 2c Press stand 2d Tab before cutting 2e Upper blade and press fixing base 2f Lower blade fixing base 2g After cutting tab

Claims (3)

  In winding devices used in the manufacturing process of strips such as capacitors, primary and secondary batteries, when the tabs that serve as terminals are striped on the reels of capacitor and battery element materials, the tabs are required length. In order to avoid cutting burrs that enter the element material and damage the element material, causing a short circuit or failure. Before the tab is welded and pressure-bonded, the cut-side surface is pressed to crush the burr, and then wound to eliminate defects in the battery element and capacitor and to improve quality. Characteristic winding device.   2. The apparatus according to claim 1, wherein a metal base for pressing is attached to a cutter blade used for cutting on a surface opposite to a direction in which the tab is supplied, so that the cut burr generated by cutting is crushed and wound in a space-saving manner. A winding device equipped with a mechanism that can improve the quality of the element.   2. The winding device according to claim 1, wherein a burr crushing process can be performed with a small operation by attaching a metal base of crushing burr generated by cutting to the back surface of the cutter.

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