Multi-station winding device

Abstract

The invention discloses a multi-station winding device. The multi-station winding device comprises a base, the winding mechanism is in transmission connection with the transposition driving assembly and is driven by the transposition driving assembly to revolve; the winding mechanism comprises a front needle nozzle part, a plurality of groups of winding needle assemblies and a plurality of groupsof driving sources; the plurality of groups of driving sources correspondingly drive the plurality of groups of winding needle assemblies to rotate; each winding needle assembly comprises a winding needle, a winding needle handle and a shaft sleeve, the driving source is directly connected with the winding needle handle or the shaft sleeve to drive the winding needle to rotate, the winding needlehandle is arranged in the shaft sleeve in an axially movable mode, and the winding needle and the winding needle handle are driven by the needle penetrating and pulling mechanism to move axially alongthe shaft sleeve to move forwards or backwards. The device is simple in structure and small in size, the direct drive motor is directly connected with the winding needle handle or the shaft sleeve todirectly drive the winding needle to rotate, a complex transmission mechanism is omitted, indirect loss is avoided, concentricity can be guaranteed, the winding speed and winding tension of equipmentcan be effectively controlled, and the rotation stress point of the winding needle is converted to the shaft sleeve, so that the rotation stress point is centered, transmission is stable, and the whole machine operation continuity is good.

Description

technical field [0001] The invention relates to an automatic winding device, in particular to a multi-station winding device. Background technique [0002] In the production process of lithium battery cells, the positive electrode sheet, the negative electrode sheet, and the separator interposed between them for insulation are wound by a winding device to form a cell. The manufacturing process includes winding, gluing, and blanking. and other processes can be carried out on the winding station, gluing station and unloading station of the winding device respectively. The winding device in the prior art is rotated by a winding needle to wind a battery core. In order to improve the winding efficiency, a double-needle or three-needle winding structure has appeared. The three winding needles are vertically arranged on the follow-up disk, and the three winding needles work in turn: after a certain winding needle is wound, it is driven by the follow-up disk. A winding needle ente...

AI Technical Summary

Problems solved by technology

Therefore, due to the need to simultaneously drive a plurality of winding needles to rotate and change stations and to drive a single winding needle to rotate and move axially, the current multi-station winding devices generally have complex structures, large volumes, and large losses. The force point of the needle is at the other end of the needle needle relative to the needle nozzle, and the transmission is unstable, which will affect the continuity of the whole machine operation and lower work efficiency

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