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Title:
MANUFACTURE OF PUNCHING NET
Document Type and Number:
Japanese Patent JPH04104700
Kind Code:
A
Abstract:

PURPOSE: To easily manufacture punching nets with various kinds of design by stopping a press process by a die for a specific time and forming a section where there is no through hole.

CONSTITUTION: A long-sized metallic plate 1 while moved intermittently in a constant direction is pressed by the die 3 to form plural through holes 2 in the metallic plate 1 and when the metallic plate 1 is formed into a punching net, the pressing process by the die 3 is stopped for the specific time to form the section 14 where there is no through hole 2. Therefore, the section 14 where there is no through hole 3 can be formed even in a direction orthogonal to the moving direction of the metallic plate 1. Consequently, punching nets in various shapes can be easily manufactured.


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Inventors:
TOKUMITSU SHUNJI
Application Number:
JP22333790A
Publication Date:
April 07, 1992
Filing Date:
August 24, 1990
Export Citation:
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Assignee:
SONY CORP
International Classes:
B21D28/24; B21D31/02; H04R1/02; (IPC1-7): B21D28/24; B21D31/02; H04R1/02
Attorney, Agent or Firm:
Hidekuma Matsukuma



 
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