Title:
MOTOR DRIVE DEVICE FOR INJECTION MOLDING MACHINE
Document Type and Number:
Japanese Patent JP3708728
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To miniaturize a device and save on a manufacturing cost and further, avoid a wasteful energy loss.
SOLUTION: The motor drive device for an injection molding machine is equipped with a power storage part 3 which stores an electric power and also stores a regenerative power Pr generated by a motor 2 during the speed reduction period Zs of the motor 2 and a power storage circuit 4 which supplies a stored power Ps accumulated in the power storage part 3 to a drive power Pd during the speed acceleration period Zf of the motor 2. In addition, the power storage circuit 4 is equipped with a charging circuit 5 which charges the power storage part 3 at a higher power storage Es than a drive voltage Ed for the motor 2. The power storage circuit 4 also may be equipped with a charging control function part 6 which enables the charging circuit 5 to charge the power storage part 3 upto the power storage voltage Es by making a power supply or before the speed acceleration period Zf of the motor 2 is reached.
Inventors:
Hiroshi Shibuya
Toshiyuki Nishida
Atsushi Koide
Hiroshi Yamaura
Toshiyuki Nishida
Atsushi Koide
Hiroshi Yamaura
Application Number:
JP31460298A
Publication Date:
October 19, 2005
Filing Date:
November 05, 1998
Export Citation:
Assignee:
Nisou Denki Co., Ltd.
Nissei Plastic Industry Co., Ltd.
Nissei Plastic Industry Co., Ltd.
International Classes:
B29C45/50; B29C45/76; H02P3/18; B29C45/40; H02P23/06; (IPC1-7): B29C45/76; B29C45/40; B29C45/50
Domestic Patent References:
| JP6025556U |
Attorney, Agent or Firm:
Shimoda Shigeru