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Title:
PUNCHING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/198900
Kind Code:
A1
Abstract:
This punching device is provided with: a punching head; a vacuum apparatus (50); a suction flow passage; and a suction switching apparatus (V). The punching head includes: a plurality of hollow rods that move vertically; and punching tools respectively provided on the tips of the hollow rods and having through-holes penetrating in the axial direction. The vacuum apparatus (50) suctions punched scraps that are produced by a punching processing of the punching head. The suction flow passage connects the through-holes of the punching tools and the vacuum device (50). The suction switching apparatus (V) changes the path of the suction flow passage so that the suction flow passage communicates only with a hollow rod, which performs the punching processing, among the plurality of hollow rods.

Inventors:
YOSHIKAWA KATSUHARU (JP)
Application Number:
PCT/JP2018/015976
Publication Date:
November 01, 2018
Filing Date:
April 18, 2018
Export Citation:
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Assignee:
TOKAIKOGYO MISHIN KK (JP)
International Classes:
D05C7/04; B26D7/18; B26F1/02; D05B37/00
Domestic Patent References:
WO2015076389A12015-05-28
Foreign References:
JPH09234698A1997-09-09
JP2000108095A2000-04-18
JPH0530759A1993-02-05
JP2018024089A2018-02-15
Other References:
See also references of EP 3617361A4
Attorney, Agent or Firm:
OKADA PATENT & TRADEMARK OFFICE, P. C. (JP)
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