Device and method for press forming

Details Device and method for press forming Device and method for press forming

2006-10-31

2006-10-31

Jones, David (Department: 3725)

Metal deforming

By relatively movable offset tool-faces

Multi-point tool-couple

C072S382000, C072S481200, C072S482300

Reexamination Certificate

active

07127930

ABSTRACT:
A pressing apparatus includes a lower die (24) fixed to a lower plate (11), and first and second plate (11), and first and second upper die punches (33and34) capable of being lifted and lowered along with an upper plate (12). The first upper die punch (33) supported by a spring (49) is capable of being lifted and lowered relative to the second upper die punch (34). The upper plate (12) is lifted and lowered, while intermittently feeding a band-shaped work (W) one pitch by one pitch from the right to the left along an upper surface of the lower die (24), thereby pressing the work (W) to form grooves in the work (W) continuously. When the groove is formed in the work (W) by pressing the work (W) by the second upper die punch (34), the groove formed at the last time by pressing the work (W) by the second upper die punch (34) is retained and positioned between the first upper die punch (33) and the lower die (24). Therefore, the formation of the grove by the second upper die punch (34) can be carried out accurately.

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