B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/696
B29C 45/74 (2006.01) B29C 45/40 (2006.01) B29C 45/50 (2006.01) B29C 45/70 (2006.01)
Patent
CA 1196458
ABSTRACT An injection molding machine wherein both a clamping mechanism and an injection mechanism are actuated by means of a servo motor, in which machine, mold opening and closing and clamping on the clamping mechanism side are carried out by gear means provided over a transmission shaft position- ed on the clamping mechanism side and a rotary member thread- edly engaged with a plunger having threads in the periphery thereof, the operation for advancing and rotating an injection screw on the injection mechanism side is carried out by advancing and rotating means by a rotary shaft and gears provided within a housing and transmission means by a plural- ity of gears provided together with an electromagnetically- operated clutch member in a portion of said transmission shaft positioned on the injection mechanism side, said machine comprising an electromagnetically-operated clutch mech- anism for temporarily stopping the application of a turning force by said servo-motor to the clamping mechanism side, and a force retaining device by an electromagnetically- operated brake capable of retaining the clamping force during the time of said stoppage, a series of steps of mold opening, clamping, injection of molten resin, metering and mold opening being effected by use of the servo-motor.
412971
Gowling Lafleur Henderson Llp
Nissei Plastics Industrial Co. Ltd.
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