Title:
PRESS BRAKE AND MANAGEMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/059411
Kind Code:
A1
Abstract:
This press brake is provided with hydraulic cylinders which raise and lower an upper table and a lower table relative to each other, and a control unit that controls hydraulic circuits of the hydraulic cylinders, wherein the control unit preemptively manages the occurrence of abnormalities in the hydraulic circuits including first pressure control valves for controlling the back pressures of the hydraulic oil on the first port side of the hydraulic cylinders.
Inventors:
YANAGAWA KOICHI (JP)
KATO TETSUAKI (JP)
YOSHIDA HIDEHIKO (JP)
KATO TETSUAKI (JP)
YOSHIDA HIDEHIKO (JP)
Application Number:
PCT/JP2019/032859
Publication Date:
March 26, 2020
Filing Date:
August 22, 2019
Export Citation:
Assignee:
AMADA HOLDINGS CO LTD (JP)
International Classes:
B21D5/02; B30B15/28
Foreign References:
| JP2001277000A | 2001-10-09 | |||
| JP2015014990A | 2015-01-22 | |||
| JP2015121898A | 2015-07-02 | |||
| JP2017024027A | 2017-02-02 | |||
| JP2016031086A | 2016-03-07 | |||
| JPH10193200A | 1998-07-28 | |||
| JP2001121299A | 2001-05-08 |
Other References:
See also references of EP 3854496A4
Attorney, Agent or Firm:
KISARAGI ASSOCIATES (JP)
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