Title:
PUNCHING DIE MANUFACTURING METHOD FOR PROTECTION AND WITHDRAWAL OF PUNCHING DIE FOR HARD MATERIAL THICK THING
Document Type and Number:
Japanese Patent JP2016034692
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a punching die capable of preventing fall of an edge, allowing a cutting object to withdraw easily from the punching die, protecting a product, and preventing the punching die itself, when punching a thick thing to be cut such as a hard foam, a slip sheet or a hard rubber product.SOLUTION: A bed 4 of a punching die is changed from a plywood to a resin. A resin plate 3 is stuck on an extrusion (ejector) rubber 5, to thereby apply averaged extrusion power. A groove having a wider width as much as 0.2-0.3 mm than the edge thickness is provided on a path of an edge 7 of the resin plate 3 stuck on the rubber, to thereby facilitate vertical movement of the resin plate 3, and to prevent fall of the edge 7.SELECTED DRAWING: Figure 1
Inventors:
OTA TADASHI
Application Number:
JP2014166190A
Publication Date:
March 17, 2016
Filing Date:
August 01, 2014
Export Citation:
Assignee:
OTA TADASHI
International Classes:
B26D7/18; B26F1/40; B26F1/44