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Title:
PRESS BRAKE
Document Type and Number:
WIPO Patent Application WO/2018/163525
Kind Code:
A1
Abstract:
According to the present invention, a safety device (a light projector (30) and a light receiving unit (40)) detects a penetrant penetrating between a punch (14) and a die (24) and stops the descent of an upper table (10). The safety device has a front-side monitoring area and a back-side monitoring area for monitoring the penetration of the penetrant, the front-side monitoring area and back-side monitoring area being disposed, respectively, in front of and behind the movement path of the punch (14) while the punch (14) descends toward the die (24). The ranges within which the front-side monitoring area and the back-side monitoring area move due to the descent of the upper table (10) are defined as a front-side search range and a back-side search range. The safety device invalidates the detection of the penetrant by the front-side monitoring area or the back-side monitoring area when interference of a front-side search range or a back-side search range by an obstacle is detected by a simulation executed in advance.

Inventors:
YAMAGUCHI YOHEI (JP)
UESUGI SATORU (JP)
Application Number:
PCT/JP2017/042139
Publication Date:
September 13, 2018
Filing Date:
November 24, 2017
Export Citation:
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Assignee:
AMADA HOLDINGS CO LTD (JP)
International Classes:
B21D5/02; B30B15/00
Foreign References:
JP2005296966A2005-10-27
EP1515078B12007-04-25
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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