Clamping die for heat sealing of lead acid storage battery case cover

Abstract

The invention discloses a clamping mold for heat-sealing the shell cover of a lead-acid battery. The clamping mold includes a clamping arm (2), a connecting block (3), a front support plate (5), a cylinder (6), and a rear support plate ( 7), the front base (8) and the rear base (9), the front support plate (5) is installed on the front base (8) by the adjusting bolt, and the rear support plate (7) is installed on the rear base (9) by the adjusting bolt , the cylinder (6) is installed between the front support plate (5) and the rear support plate (7), the connecting block (3) is installed on the ejector rod of the cylinder (6), and the fastening arm is installed on both ends of the connecting block (3) (2), the overall structure of the clamping die. The present invention adopts the clamping die to fix the shape of the battery shell, so that it can keep the original shape when heat sealing, align the battery cover and the battery shell heat-melt ribs, and stick together tightly after melting, so as to keep the tightness of the battery. Assemblability, reduce poor heat sealing, reduce the difficulty of heat sealing, improve heat sealing efficiency, and improve the appearance of the battery after heat sealing.

Description

technical field [0001] The invention relates to a jig for heat-sealing the shell cover of a lead-acid battery, in particular to a clamping die for heat-sealing the shell cover of a lead-acid battery. Background technique [0002] In the production process of valve-controlled sealed lead-acid battery maintenance-free automotive batteries, there is a battery cover heat-sealing process. In this process, the battery cover and battery shell are sealed together by a heat-sealing machine. Since maintenance-free automotive batteries are used for high-current discharge , the assembly is tight, and the battery case is made of soft PP material, so the mouth of the battery case with the electrode group will open outwards under the pressure of the electrode group, which will often cause the case cover to be misplaced and poorly sealed during heat sealing. , and eventually the battery was scrapped due to poor heat sealing. In order to solve this problem, it is usually to reduce the assem...

AI Technical Summary

Problems solved by technology

[0002] In the production process of VRLA maintenance-free automotive batteries, there is a heat-sealing process for the battery cover. , the assembly is tight, and the battery case is made of soft PP material, so the mouth of the battery case with the electrode group will open outward under the pressure of the electrode group, which will often cause the case cover to be dislocated and poorly sealed during heat sealing. , and eventually the battery was scrapped due to poor heat sealing

In order to solve this problem, it is usually to reduce the assembly pressure so that the battery shell does not deform. This method has the following problems: 1. The assembly pressure is low, the battery has poor discharge performance at high currents, acid stratification is prone to occur, and self-discharge is large; 2. 1. In order to reduce the assembly pressure, the thickness of the separator has to be reduced. The thickness of the separator is reduced, and the separator is easy to be damaged, so that the phenomenon of short circuit of the battery increases; 3. The separator itself is designed to be thinner, and the separator can not be thinned. Therefore, the number or thickness of the plates has to be reduced, which will reduce the capacity of the battery

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