Title:
DOOR DEVICE FOR MACHINE TOOL, AND MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2022/239214
Kind Code:
A1
Abstract:
This door device for a machine tool comprises: a door that is slidably movable between a first position at which an opening of a housing that defines an interior region of the machine tool is closed and a second position at which the opening is opened; a handle disposed on the door; at least one air cylinder that has a first air chamber and applies, in a first direction from the first position toward the second position, a first assist force to the door when air is fed to the first air chamber; an air flow path that includes a first flow path connecting the first air chamber and an air supply source; at least one switching valve disposed in the air flow path; and an operation that switches the state of the at least one switching valve between a first state in which the door is allowed to move in the first direction or in a second direction from the second position toward the first position, without the first assist force and a second state in which the door is applied with the first assist force in the first direction.
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Inventors:
KINTOKI TOMOHIRO (JP)
ARISUE KENJI (JP)
HIROSE KENJI (JP)
MAEKAWA REIJI (JP)
KANEDA YUKI (JP)
ARISUE KENJI (JP)
HIROSE KENJI (JP)
MAEKAWA REIJI (JP)
KANEDA YUKI (JP)
Application Number:
PCT/JP2021/018311
Publication Date:
November 17, 2022
Filing Date:
May 14, 2021
Export Citation:
Assignee:
YAMAZAKI MAZAK CORP (JP)
International Classes:
B23Q11/08; E05F15/56
Foreign References:
| JP2015054383A | 2015-03-23 | |||
| JP2002309853A | 2002-10-23 |
Attorney, Agent or Firm:
ISHIKAWA Taro (JP)
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