Structure of punch for venetian blind manufacture

Details Structure of punch for venetian blind manufacture Structure of punch for venetian blind manufacture

1990-05-02

1991-06-11

Jones, David

Metal deforming

With means to drive tool

With means to selectably control movement of tool

72452, 72292, B21J 746

Patent

active

050222554

ABSTRACT:
This invention is related to an improved structure of punch for venetian blind manufacture and more particularly to the one which is including a revolving seat to control the operation of a punch tool guide block assembly, which guide block assembly is comprised of an upper guide block movably connected with a bottom guide block. Through the operation of the adjusting seat, the punching process is rapidly and efficiently alternated.

REFERENCES:
patent: 2725916 (1955-12-01), Gershater
patent: 4306443 (1981-12-01), Matsutani
patent: 4550588 (1985-11-01), Abe et al.
patent: 4691553 (1987-09-01), Barber

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