Polygon coiling needle for lithium coiling machine

Abstract

The invention relates to a polygon coiling needle for a lithium coiling machine. The polygon coiling needle comprises a first coiling needle base and a second coiling needle base, wherein a tube connector is arranged on the second coiling needle base; the first coiling needle base and the second coiling needle base are spliced to form a base; an inner cavity is formed inside the base; a sliding block is arranged inside the inner cavity; a first inner needle is arranged on the sliding block in match; a second inner needle parallel to the first inner needle is arranged on one side of the first inner needle and inside the inner cavity; an airbag mounting groove and an air hole communicated with the tube connector are respectively formed in the second inner needle; an airbag communicated withthe air hole is arranged in the airbag mounting groove; a first coiling needle is arranged in match at one end extending outside the base, of the first inner needle; a second coiling needle arranged in match at one end extending outside the base, of the second inner needle. The polygon coiling needle is simple in structure and convenient to use, efficient clamping on products can be achieved through the airbag, the coiling efficiency of the polygon coiling needle is higher than that of a conventional flat coiling machine, constant and uniform coiling tension can be achieved, and a product coiled by using the polygon coiling needle can be good in edge consistency.

Description

technical field [0001] The invention relates to the field of winding machines, in particular to a polygonal winding needle for a lithium battery winding machine. Background technique [0002] At present, the production efficiency of the existing flat-shaped needle winding machine is low, and its winding speed is uneven, resulting in a tension fluctuation range of 50% during the winding process of the battery core, and the quality consistency of the battery core is relatively poor, which cannot meet the growing demand. production needs. Contents of the invention [0003] In view of the above existing problems, the applicant has made research and improvement, and provides a polygonal winding needle for lithium battery winding machine, which can not only improve the winding efficiency, but also ensure constant tension winding, so that the battery core can be wound from the inside The outer diaphragm and pole piece achieve a constant gap; the winding speed is increased, and t...

AI Technical Summary

Problems solved by technology

[0002] At present, the production efficiency of the existing flat-shaped needle winding machine is low, and its winding speed is uneven, resulting in a tension fluctuation range of 50% during the winding process of the battery core, and the quality consistency of the battery core is relatively poor, which cannot meet the growing demand. production demand

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