Title:
AUTOMATIC OPEN/CLOSE DEVICE OF SAFETY DOOR IN INJECTION MOLDING MACHINE OR THE LIKE AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2009/090830
Kind Code:
A1
Abstract:
Disclosed is an automatic open/close device of a safety door which can set freely
(arbitrarily) and control an open/close speed or an open position in order to
shorten a waiting time required for opening/closing the safety door, and can
eliminate the need for a touch switch. A control method thereof is also disclosed.
The automatic open/close device of a safety door comprises an electric motor
which can be feedback controlled, and a rotation/linear motion conversion mechanism,
and can set arbitrarily and control the open position and the open/close speed
of the safety door. The open position of the safety door required for taking out
a molding is set in the molding process and the open/close operation is controlled.
Furthermore, contact of the safety door with a worker or an obstacle during the
closing operation is detected based on the torque load of the electric motor and
the closing operation is stopped immediately.
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Inventors:
ONO HIDENOBU (JP)
OGAWA KOJI (JP)
OGAWA KOJI (JP)
Application Number:
PCT/JP2008/073147
Publication Date:
July 23, 2009
Filing Date:
December 15, 2008
Export Citation:
Assignee:
UBE MACHINERY CORP LTD (JP)
ONO HIDENOBU (JP)
OGAWA KOJI (JP)
ONO HIDENOBU (JP)
OGAWA KOJI (JP)
International Classes:
B29C45/84; B22D17/26; B29C45/17
Foreign References:
| JP2006150384A | 2006-06-15 | |||
| JPH07232360A | 1995-09-05 | |||
| JPH0825448A | 1996-01-30 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (Toranomon 37 Mori Bldg. 5-1,Toranomon 3-chome, Minato-ku, Tokyo 23, JP)
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