Rolled product processing apparatus

Abstract

The invention relates to a rolled product processing apparatus. The processing apparatus comprises a roll needle and a shaping mechanism, wherein the shaping mechanism comprises a movable part, a first acting part and a second acting part, wherein the movable part is connected with at least one of the first acting part and the second acting part; the movable part has an effect of enabling the first acting part and the second acting part to generate a stretching stroke to be far from each other relatively; accommodating grooves used for accommodating the first acting part and the second acting part respectively are formed in the outer surface of the roll needle; in the stretching stroke, the first acting part and the second acting part can apply acting forces of opposite directions to the rolled product so as to stretch the rolled product; and at the starting end of the stretching stroke, the first acting part and the second acting part are both positioned in the corresponding accommodating grooves. By virtue of the scheme, shrinkage deformation amount of the rolled product to a hollow part of the rolled product is reduced, so that the processing quality of the rolled product, such as a wound cell, can be improved consequently.

Description

technical field [0001] The present application relates to the field of rolled product processing, in particular to a rolled product processing device. Background technique [0002] With the rapid development of battery technology, on the one hand, it is necessary to improve the production efficiency of batteries, and on the other hand, it is necessary to reduce the manufacturing cost of batteries. However, as a key process in the cell manufacturing process, the winding process is one of the important factors to improve the production efficiency of the cell and reduce the production cost. [0003] In the related technology, when the wound battery is separated from the winding needle, the tension applied to the battery by the winding needle disappears. At this time, a cavity appears in the center of the battery, and the pole piece will produce a hole toward the center of the cavity. Shrinkage deformation at the part, which will cause the pole piece to collapse and wrinkle, re...

AI Technical Summary

Problems solved by technology

[0003] In the related technology, when the wound battery is separated from the winding needle, the tension applied to the battery by the winding needle disappears. At this time, a cavity appears in the center of the battery, and the pole piece will produce a hole toward the center of the cavity. Shrinkage deformation at the position, which will cause the pole piece to collapse and wrinkle, reducing the processing quality of the battery

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