Aluminium film stamping shell forming system

Abstract

The invention relates to the technical field of an aluminium film stamping shell forming system in lithium ion battery encapsulating, in particular to an aluminium film stamping shell forming system.The aluminium film stamping shell forming system comprises a loading device, a pre-stamping shell device, a stamping shell forming device and an unloading device which are sequentially distributed ina conveying direction of an aluminium film, wherein the stamping shell forming device comprises a first stamping mechanism, a first upper pressure plate, a first pressure regulating mechanism and a first lifting mechanism for jacking the first pressure regulating mechanism which are sequentially arranged from top to bottom; the first pressure regulating mechanism comprises a first concave mouldingboard and a first elastic regulating mechanism which are sequentially arranged from top to bottom; the first elastic regulating mechanism is provided with a plurality of elastic force applying points; in a process of pressing the aluminium film, the first concave moulding board is matched with the first upper pressure plate for pressing the aluminium film; and the elastic force applying points act on the first concave moulding board, so that the first concave moulding board is deformed. The aluminium film stamping shell forming system shortens pit stamping time, increases pit stamping depth;and aluminium layers on four corners of an aluminium shell obtained by shell stamping and forming are greater in thickness.

Description

technical field [0001] The invention relates to the technical field of aluminum film punching and forming in the manufacture of lithium-ion battery packaging, in particular to an aluminum film punching and forming system. Background technique [0002] Aluminum film punching forming is an indispensable part of the current production of soft-packed lithium batteries. The speed and quality of punching shells are the current direction of progress; the current aluminum film punching mechanism mostly uses one-time forming, and the stretching depth and stretching of the back shell The thickness of the aluminum layer at the four corners becomes a bottleneck. [0003] In addition, most of the aluminum film compression structures currently used are rigid connections, which cannot effectively eliminate the parallelism errors that occur during the processing and assembly of the mechanism, resulting in parallelism errors between the upper platen and the concave plate when the aluminum fi...

AI Technical Summary

Problems solved by technology

[0002] Aluminum film punching forming is an indispensable part of the current production of soft-packed lithium batteries. The speed and quality of punching shells are the current direction of progress; the current aluminum film punching mechanism mostly uses one-time forming, and the stretching depth and stretching of the back shell The thickness of the aluminum layer at the four corners becomes a bottleneck

[0003] In addition, most of the aluminum film compression structures currently used are rigid connections, which cannot effectively eliminate the parallelism errors that occur during the processing and assembly of the mechanism, resulting in parallelism errors between the upper platen and the concave plate when the aluminum film is pressed , so that there is no good fit between the upper platen and the concave formwork

The parallelism error causes the upper platen and the concave platen to not compress the aluminum film uniformly during punching and forming. It is necessary to apply more pressure to force the platen to deform to compress the aluminum film. In addition, the four corners of the product will be wrinkled during the punching process. Problems such as uneven stretching of the shell, non-concentrated stress, curling, etc.

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