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Two-piece can body production process

A production process, two-piece can technology, applied in the field of two-piece can body production technology, can solve problems such as cracking and straining

Active Publication Date: 2018-01-23
广东韩江轻工机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Existing above-mentioned method has following deficiency: when carrying out bottom punching, the tank wall of can blank and tank bottom junction turning point ( image 3 The D\G point in ) is very prone to the problem of cracking and straining, especially for tanks with a large depth (for example, the depth is greater than the diameter), this situation is especially serious, and the specific reasons are as follows:

Method used

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  • Two-piece can body production process
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  • Two-piece can body production process

Examples

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Embodiment Construction

[0034] A two-piece can body production process, the design value of the tank wall height of the finished can is h, and the bottom punching equipment used includes an upper die assembly 3 and a lower die assembly 4, wherein the lower die assembly 4 Including a lower mold core 41 and an annular spacer 42, the lower mold core 41 is cylindrical, the upper surface of the lower mold core 41 is formed with an annular groove and an annular rib required for stamping the tank bottom, the lower mold core 41 is fixed, The annular spacer 42 is set on the periphery of the lower die core 41 and can move vertically; The mold core 31 is cylindrical, and the lower surface of the upper mold core 31 is formed with annular grooves and annular ribs required for stamping the bottom of the tank. The position of the upper mold core annular groove corresponds to the position of the lower mold core annular rib. The position of the annular rib of the upper mold core matches the position of the annular gr...

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Abstract

A production process of the body of a two-piece can sequentially includes the steps of A, stamping a metal piece into a cup-shaped blank; B, stretching the cup-shaped blank until the stretching height H of the blank wall is larger than the can wall height design value h; C, using bottom stamping equipment to stamp the bottom of the blank, and allowing the stretching interference part of the blank wall to be pulled towards the center of the blank bottom and be bent and yielded under pressure to become the component of the blank bottom by the aid of the joint effect of radial pull force and the downward pressure of an upper die core. By the production process, the risk of pull crack and injury at the junction transition part between the can wall and the can bottom can be lowered greatly.

Description

technical field [0001] The invention belongs to the technical field of metal packaging can production technology, and in particular relates to a two-piece can body production technology. Background technique [0002] According to the production process of metal cans, metal cans are divided into two-piece cans and three-piece cans. Among them, the three-piece tank means that the tank cover, the tank bottom and the cylindrical tank wall are respectively processed by a piece of metal sheet. The cylindrical tank wall of the three-piece tank forms a vertical weld at the position of a plain line. Seams are also formed between the cylindrical tank walls. The two-piece can is made of two pieces of metal, the can lid is made of one piece of metal, and the cylindrical tank wall and round bottom are made of another piece of metal through strong stamping, stretching and rolling. , the tank wall and tank bottom are combined to form the tank body, and the whole tank body is only process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D51/26B21D37/10B21D22/20
CPCB21D22/20B21D37/10B21D51/26
Inventor 林平惠陈泽强
Owner 广东韩江轻工机械有限公司
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