Shell punching die for lithium ion battery soft roll by applying demolding negative pressure tensile force principle

Abstract

The invention discloses a shell punching die for a lithium ion battery soft roll by applying a demolding negative pressure tensile force principle. The shell punching die structurally comprises an upper die, a supplementing port, four die assembling holes, four die assembling bolts, a lower die and a mounting base plate. The lower die is arranged in the middle of the surface of the mounting bottomplate, the four die assembling bolts are uniformly distributed at four ends of the surface of the mounting bottom plate in an equally spaced manner, the four die assembling holes are uniformly formedin four ends of the upper die in an equally spaced manner, and the die is of an integrated structure. A slider is driven by means of a negative pressure as a workpiece in a die surface separates andresidual materials on a die joint of a parting die are eliminated by means of a guide doctor blade, so that the die joint is prevented from being blocked after the residual materials are dried, the secondary die assembling precision is improved, the parting line of the formed product is optimized and a polishing step is canceled.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a lithium-ion battery soft package shell punching die using the principle of negative pressure tension for demoulding. Background technique [0002] Lithium-ion batteries are widely used in mobile terminal equipment, such as portable chargers, mobile phones, tablet computers, etc., will use lithium-ion batteries to achieve multiple charging and storage functions. There are two types of packages. The soft package shell has the advantages of high safety performance, light weight, and small internal resistance, and gradually replaces the hard package shell. The soft package shell needs to use stamping dies to cooperate with heating for molding during the production process, as the main processing The process and the fitting accuracy of the mold have a great influence on the quality of the shell. There are such problems in the process of shelling the existing lithium-ion battery...

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Problems solved by technology

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a lithium-ion battery soft package shell punching die using the principle of negative pressure pulling force for demoulding, so as to solve the problem that most of the currently used soft materials are easy to appear on both sides when closing the mold. The overflow situation will lead to residual material on the appearance surface. If it is not removed in time, the residual material will dry out during the second mold clamping, the parting surface will not be able to fit and the mold line will widen, resulting in the need to increase the polishing process on both sides of the appearance surface. , a problem that delays progress

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