Cylindrical battery roll core shaping device and shaping method

Abstract

The invention discloses a cylindrical battery roll core shaping device which comprises a roll core positioning mechanism and a roll core shaping mechanism, wherein the roll core positioning mechanism comprises a bored needle seat; a fixed guide post is arranged in the bored needle seat; and a bored needle positioning hole and a bored needle mounting hole are formed in the fixed guide post. The cylindrical battery roll core shaping device further comprises a positioning pin, a positioning rotation gear, a positioning pin cylinder and a positioning motor gear, wherein the positioning motor gear is meshed with the positioning rotation gear; and the roll core shaping mechanism comprises three groups of roll core shaping assemblies, and two adjacent two groups of the three groups of roll core shaping assemblies form an angle of 120 degrees in a space structure. According to the cylindrical battery roll core shaping device disclosed by the invention, the angle position of the bored needle is adjusted by the roll core positioning mechanism, and the battery roll core is shaped by virtue of the three groups of the roll core shaping assemblies between every two groups of which the angle of 120 degrees is formed. Therefore, the battery roll core shaping aim is achieved, and the roundness of the battery roll core is effectively improved.

Description

technical field [0001] The invention belongs to the field of cylindrical battery processing and manufacturing equipment, and in particular relates to a shaping device for a cylindrical battery winding core and a method for shaping the cylindrical battery winding core by using the shaping device. Background technique [0002] Cylindrical battery is a commonly used battery, which can be seen in people's daily life and industrial production. For example, cylindrical batteries are used in remote controls, clocks, toys, and various electronic digital products in daily life. In industrial production, cylindrical batteries are also used in power battery packs for assembly. The structure of a cylindrical battery generally includes a battery case, a battery core disposed in the case, a roll sheet disposed at both ends of the core, and a cover plate and conductive terminals sealed at both ends of the case. [0003] The processing process of the cylindrical battery is as follows: the ...

AI Technical Summary

Problems solved by technology

The winding step in the actual battery processing process uses a cylindrical winding machine. In the winding step of the existing winding machine, the winding core after winding will not be round, and the roundness of the winding core produced The fluctuation is large, and once the roundness and outer diameter of the winding core change, it will bring great difficulties to the placement of the winding core into the battery case in the subsequent steps, especially in the fully automated production line, because there is no inspection of the battery winding core. The steps of roundness and diameter testing, so the manipulator or equipment entering the shell will forcibly put the prepared core into the battery shell, which not only easily scratches the outside of the core, but also increases the direct contact between the core and the shell. Causes the risk of short circuit, and easily deforms the casing, which seriously affects the appearance of the battery

[0004] Through the research on the existing battery assembly production line, it is found that there are many factors that affect the roundness of the winding core. To solve this problem from the perspective of process design, a lot of processes need to be added. For example, it is necessary to check the roundness of the prepared winding core. and diameter measurement to sort out the unqualified winding cores, and it is necessary to improve and correct the unqualified winding cores. On the one hand, these additional processes are time-consuming and labor-intensive, and on the other hand, it is difficult to compare with the left line of the existing assembly line. match

For example, the application number 2008200925977 named "Cylindrical Battery Rolling Core Shaping Device" provides a device that uses a mold with a preset winding core radius to shape the battery winding core. Although it can shape the battery winding core, in practice During use, first of all, the device cannot be adapted to the existing battery production line, and its winding core feeding and discharging needs to be controlled manually or by an additional robot. On the other hand, the two-half shaping device and the battery winding The shape fit of the core is unsatisfactory. If the battery core has a large deformation, the appearance shape of the core can meet the requirements after being shaped by this device, but the internal structure is easily squeezed and deformed.

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