Title:
INJECTION DEVICE FOR DIE CASTING MACHINE
Document Type and Number:
WIPO Patent Application WO/2008/035805
Kind Code:
A1
Abstract:
A hybrid injection device for a die casting machine, in which a large electric
power loss is prevented from occurring by avoiding a large current during pressurizing
and holding operation and in which the size of a motor is reduced. The injection
device has an injection cylinder (16) for receiving an injection piston (15)
for injecting a molten metal into a mold and an electric booster (8) operating
with a hydraulic cylinder. A head chamber (8H) of an electric booster is fluidically
communicated with the head chamber (16H) of the injection cylinder. The head
chamber (8H) linearly moves a booster piston rod (5) received in the electric
booster (8) to push and move the injection piston, performing injection molding.
Because a stop valve (25) is installed in a pipe interconnecting the head chamber
(16H) of the injection cylinder and the rod chamber (8R) of the booster (8), the
injection device can produce pressure by the head area of the electric booster
during the boosting and produce pressure by the rod area thereof during pressurizing
and holding operation.
Inventors:
UCHIDA MASASHI (JP)
HIRAIZUMI KAZUKI (JP)
HIRAIZUMI KAZUKI (JP)
Application Number:
PCT/JP2007/068734
Publication Date:
March 27, 2008
Filing Date:
September 19, 2007
Export Citation:
Assignee:
UBE MACHINERY CORP LTD (JP)
UCHIDA MASASHI (JP)
HIRAIZUMI KAZUKI (JP)
UCHIDA MASASHI (JP)
HIRAIZUMI KAZUKI (JP)
International Classes:
B22D17/32
Foreign References:
| JP2006000887A | 2006-01-05 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (Toranomon 37 Mori Bldg.5-1, Toranomon 3-chom, Minato-ku Tokyo 23, JP)
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