Tension mechanism of winding machine

Abstract

The invention discloses a tension mechanism of a winding machine. The tension mechanism is applied to winding equipment used for lithium ion battery cell winding or needing tension control. The tension mechanism comprises a swing arm, a rotating shaft, a bearing seat, a potentiometer and a constant pressure device, the rotating shaft is mounted on a machine body through the bearing seat, the upper end of the swing arm is fixed at the front end of the rotating shaft, the constant pressure device pushes the swing arm at the front end of the rotating shaft to deflect by a certain angle with constant tension, and the potentiometer used for monitoring rotation positions of the rotating shaft is mounted on the rear side of the bearing seat. A sliding seat is movably connected to the lower end of the swing arm, at least one tension roller parallel to an axis of the rotating shaft is mounted on the sliding seat, a sliding seat frame is arranged on the rear side of the sliding seat, at least one guide sliding rod used for limiting the sliding seat and the tension rollers thereon to move bilaterally and parallelly is arranged on the sliding seat frame, and linear bearings in sliding fit with the guide sliding rods are mounted on the sliding seat.

Description

【Technical field】 [0001] The invention relates to a tension control device, in particular to a tension mechanism of a winding machine. 【Background technique】 [0002] In the field of lithium-ion battery core winding or other processing fields that require tension control, especially in the winding processing of lithium-ion battery cores, the tension control of pole pieces is the key to the quality assurance of lithium-ion battery in the production of lithium-ion battery core winding. It plays a very important role and directly affects the quality of the winding core of the lithium-ion battery, the safety, consistency and service life of the lithium-ion battery. In the past, the tension control device of the pole piece belt unwinding used in the lithium-ion battery winding machine, the roller is fixed on the swing arm, the weight of the swing arm is heavy, and the load of the swing arm of the device increases. During the winding process, the pole piece Due to the large chang...

AI Technical Summary

Problems solved by technology

In the past, the tension control device of the pole piece belt discharge used in the lithium-ion battery winding machine, the roller is fixed on the swing arm, the weight of the swing arm is heavy, and the load of the swing arm of the device increases. During the winding process, the pole piece Due to the large change in the feeding speed of the material belt, the fluctuation range of the tension also increases. The swing range of the swing arm of the device is not stable, and it is difficult to control the small tension. The rolled battery cells are prone to S-shaped Defects, the quality of battery cells is not stable

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