Patent ID: 9630245
Date: 2017-04-25
CPC Classifications: B22C,B22D

Claim:
1. A casting apparatus, comprising: a die; an injection device including a first suction device and a second suction device, each of which sucks air from the interior of the tubular sleeve; and a control device which controls the first suction device and the second suction device, wherein the tubular sleeve includes a first end and a second end, the tubular sleeve communicates with the cavity on a side of the first end, the tubular sleeve includes the plunger is movable in the interior of the tubular sleeve between a standby position and a predetermined actuation position, the standby position being such that a tip end of the plunger is located on a side of the second end with respect to the supply port, the plunger being configured to move from the standby position to the actuation position for injecting the molten metal from the interior of the tubular sleeve into the cavity, the first suction device sucks the air from the interior of the tubular sleeve through the opening, the second suction device sucks the air from a first end region of the interior of the tubular sleeve with respect to the tip end of the plunger through a gap between an inner circumferential surface of the tubular sleeve and an outer circumferential surface of the plunger, the control device controls the first suction device and the second suction device in such a manner that as the plunger is moved from the standby position to the actuation position, the control device controls the first suction device to start sucking the air from the interior of the tubular sleeve at a point of time when the tip end of the plunger passes the supply port, and the control device controls the second suction device to start sucking the air from the interior of the tubular sleeve after the tip end of the plunger passes the opening.