Process for stamping thin-wall battery case by using joggle die and joggle die
A battery case and ladder technology, which is applied in the field of battery case production technology, can solve the problems of high structural strength requirements and the like
Active Publication Date: 2010-05-12
无锡市金杨新材料股份有限公司
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Problems solved by technology
However, after research, it has been found that the opening of the battery case needs to be folded inward, which generally requires greater structural strength, and most of the battery case does not bear other structural stresses except for the tension of the battery material.
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[0014] Such as image 3 As shown, in the step die stamping process of the thin-walled battery case 6 according to the present invention, the blank is cut into a circular blank, the blank is installed on the step die, and the outer shell of the battery case is formed by stamping through the step die, and the outer shell of the battery case is formed by the cylindrical The punch presses the circular cavity of the upper concave die of the step and the lower concave die of the step, and punches the blank out of the circular cavity 4 of the lower concave die 2 of the step. The cylindrical punch 3 has a ring cutting groove 5. At the same time, a circular arc transition zone is formed at the junction of the upper step die 1 and the lower step die 2. The wall thickness of the lower shell 6 of the transition zone is relatively thin, and the wall thickness of the upper shell 6 of the transition zone is thicker, but The inner diameter of the whole casing 6 is the same, so that under the ...
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The invention discloses a process for stamping a thin-wall battery case by using a joggle die and a joggle die. The process comprises: cutting a blank material to make a spherical blank; mounting the blank on the joggle die; stamping a shell of the battery case by the joggle die; and stamping the blank out from the spherical cavity of the joggle lower female die by using the cylindrical stamp stem to stamp the spherical cavities of a joggle upper female die and a joggle lower female die and forming circular arc-shaped transitional zone at the junction part of the joggle upper female die and the joggle lower female die at the same time. The cylindrical stamp stem is provided with a ring cutting groove. The wall of the shell under the transitional zone is thin and the wall of the shell above the transitional zone is thick, but the inside diameter of the whole shell is consistent; and thus, on the premise of ensuring the whole strength, the materials for producing the lower shell is saved, the material cost is saved and the relative battery holding capacity of the material is increased.
Description
technical field [0001] The invention relates to a production process of a battery case, in particular to a process for producing a thin-walled battery case by using a stamping die. Background technique [0002] Traditional die-casting molds include ordinary molds, forging molds and some special molds such as extrusion molds and draft molds. The invention designs a novel stepped stamping die. [0003] The wall thickness of the battery case produced by the commonly used mold is relatively large, and it is generally a battery case with uniform wall thickness. However, after research, it has been found that the opening of the battery case needs to be folded inward, which generally requires greater structural strength, and most of the battery case does not bear other structural stresses except for the tension of the battery material. Therefore, in the production process, the wall thickness of the shell part of the battery case can be designed to be thinner than the wall thickne...
Claims
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Login to View More IPC IPC(8): B21D22/02B21D37/10
Inventor 周勤勇杨建林
Owner 无锡市金杨新材料股份有限公司