Title:
PROGRESSIVE PUNCHING DIE
Document Type and Number:
Japanese Patent JP2009056509
Kind Code:
A
Abstract:
To provide a progressive punching die equipped with a flat face lifter which prevents sticking of a coil material.
The progressive punching die is equipped with the flat face lifter 8 horizontally supported in an elastic manner on a lower die and punches with a punching blade the coil material which is supplied from the lateral direction slidingly on the flat face lifter 8. On the flat surface 8a of the flat face lifter 8, a plurality of linear air grooves 84 shallow enough to avoid damaging the coil material are formed by intersecting each other at an angle of 45 in the transfer direction of the material.
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Inventors:
Kondo, Takeshi
Application Number:
JP2007000228440
Publication Date:
March 19, 2009
Filing Date:
September 04, 2007
Export Citation:
Assignee:
TOYOTA AUTO BODY CO LTD
International Classes:
B21D43/00; B21D43/02; B21D43/00; B21D43/02
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