一种用于铁罐底部成型的冲压模具

Abstract

本实用新型公开了一种用于铁罐底部成型的冲压模具，涉及模具技术领域，包括有下模座、以及通过第一导柱呈滑动连接于下模座的上模座；所述上模座的上端面连接有模柄，所述上模座的下端面可拆卸连接有凹模；所述下模座的上端面可拆卸连接有凸模，所述下模座的下端面连接有弹性机构，所述弹性机构的上端面连接有第二导柱，所述第二导柱向上穿设下模座并延伸至凸模的外周侧，且连接有呈滑动套设于凸模外周侧的活动圈；其中，所述活动圈与凸模之间形成作用于产品的定位空间；弹性机构在冲压过程中提供缓冲作用，分散冲击力，避免罐底局部应力集中，减少裂纹和褶皱的产生，提高了产品的强度和良品率。

Claims

1. A punch press die for forming the bottom of an iron can, characterized by, It includes a lower mold base and an upper mold base that is slidably connected to the lower mold base via a first guide post; The upper end face of the upper mold base is connected to a mold handle, and the lower end face of the upper mold base is detachably connected to a die. The upper end face of the lower die base is detachably connected to a punch, the lower end face of the lower die base is connected to an elastic mechanism, the upper end face of the elastic mechanism is connected to a second guide post, the second guide post passes upward through the lower die base and extends to the outer periphery of the punch, and is connected to a movable ring that is slidably sleeved on the outer periphery of the punch. The movable ring and the punch form a positioning space that acts on the product.

2. A punch die for forming the bottom of an iron can according to claim 1, wherein The elastic mechanism includes an upper top plate, a lower top plate, and a compression spring connected between the upper top plate and the lower top plate, and the second guide post is connected to the upper end face of the upper top plate; The lower mold base has a first channel extending vertically, and the second guide post is slidably connected to the first channel.

3. A punch die for forming the bottom of a can according to claim 2, wherein The movable ring includes an outer ring body and an inner ring body coaxially connected. A second channel corresponding to the punch is opened along the axis of the outer ring body, and a third channel corresponding to the punch is opened along the axis of the inner ring body. The radius of the third channel is less than or equal to the radius of the second channel.

4. A punch die for forming the bottom of a can according to claim 3, wherein The outer ring body has a stepped groove on its inner side for assembling the inner ring body, and a threaded hole is provided in the stepped groove. The inner ring body has a through hole adapted to the threaded hole at its periphery. The second guide post is connected to the outer ring body.

5. A punch die for forming the bottom of a can according to claim 4, wherein After the inner ring body is assembled to the outer ring body, its upper end face is flush with the upper end face of the outer ring body.

6. A punch die for forming the bottom of a can according to claim 3, wherein A flange is formed on the inner side of the inner ring body and along the periphery of its third channel.

7. A punch die for forming the bottom of an iron can according to any one of claims 1 to 6, characterized in that, The concave die has a stamping groove corresponding to the convex die, and the lower periphery of the stamping groove and the upper periphery of the movable ring cooperate to form an abutment surface.

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