DIE CASTING MACHINE

Japanese Patent JP3878540

B2

PROBLEM TO BE SOLVED: To accomplish a high-speed and high-accuracy injection without using an accumulator.
SOLUTION: The die casting machine is characterized by the feature that when a molten metal (20) is injection-filled into a die cavity (31) by a unit of bidirectional hydraulic pump (2a), a rotational speed of a drive motor (4a) of the bidirectional hydraulic pump (2a) is controlled at the time of injection-filling and a torque of the drive motor (4a) of the bidirectional hydraulic pump (2a) is controlled at the time of dwelling so that the accumulator (53) can be eliminated by controlling rotational speed of the electric motor (4a) at the time of injection-filling and by performing the torque control at the time of dwelling and that a pipeline can be made extremely simple so as to economize a pressure oil consumption and to improve accuracy of the injection.

JPH0794023	[Title of Invention] Powder release agent spray device
JPS606740	[Title of the Invention] A measuring method of gas pressure in a metallic mold
JPS607880	[Title of the device] An ejection device of a die-casting machine

Naohiko Tsuzuki
Hideaki Harada
Hiromi Takagi
Hitoshi Osawa

JP2002339870A

February 07, 2007

November 22, 2002

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東洋機械金属株式会社
株式会社デンソー

B22D17/20; F15B11/02; B22D17/10; B22D17/32; F15B11/04; (IPC1-7): B22D17/20; B22D17/32; F15B11/02; F15B11/04

JP7156225A
JP2001047299A
JP2001287236A
JP5212522A

Yoshiaki Mori

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