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Patent Searching and Data


Title:
TRANSFER PRESS METALLIC DIE DEVICE
Document Type and Number:
Japanese Patent JPS5853331
Kind Code:
A
Abstract:

PURPOSE: To mold a faucet joint having the same dimensions as a die without inclining a half-drawn projection of a substance to be worked, by constituting so that a moving plate is depressed by preceding pin, and a lift plate descends to the lower part from the substance to be worked.

CONSTITUTION: When a press ram decends, a moving plate 21 of the tip of a preceding pin 20 overcomes the force of a spring 22, is depressed, and a lift plate 12 also descends. Subsequently, a substance 1 to be worked is depressed by a stripper 7, is positioned by a die pilot 11, a half-drawn projection is formed immediately before a bottom dead point, and becoms a ram bottom dead point state. The lift plate 12 is further depressed than the process length of a ram, which is required for forming the half-drawn projection previously by the preceding pin 20, therefore, when forming of the half-drawn projection is started, force of the spring 22 is not put on the substance 1 to be worked, and the substance 1 to be worked is not subjected to bending moment. Therefore, on the flange surface, the half-drawn projection is formed in a flat state, and a product of a faucet joint having the same dimensions as a die 10 is obtained.


Inventors:
TAKEGAWA YUUJI
Application Number:
JP15128981A
Publication Date:
March 29, 1983
Filing Date:
September 24, 1981
Export Citation:
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Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
B21D28/10; B21D28/34; B21D37/10; B21D43/04; B21D45/04; B30B13/00; (IPC1-7): B21D28/10; B21D28/34; B21D45/02; B30B13/00
Attorney, Agent or Firm:
Takehiko Suzue