Injection device and injection method
OwnerShunshi Kuzumi, Takeshi Konnoinventors
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Abstract
An object of the present invention is to provide an injection apparatus capable of enhancing efficiency, reducing size, and enhancing durability of an injection member. The injection apparatus includes an injection member disposed reciprocatably in a cylinder member, a linear motor device (49) for advancing the injection member when operated, a metering member disposed rotatably in the cylinder member, and metering drive means for rotating the metering member. In this case, in an injection step, the linear motor device (49), when operated, can directly advance the injection member to thereby perform injection; therefore, occurrence of energy loss can be prevented. As a result, the efficiency of the injection apparatus (43) can be enhanced.
Claims22
An injection apparatus characterized by comprising:
- (a) an injection member disposed reciprocatably in a cylinder member;
- (b) a linear motor device for advancing the injection member when operated;
- (c) a metering member disposed rotatably in the cylinder member;
- and
- (d) metering drive means for rotating the metering member.
An injection method characterized by comprising:
- (a) rotating the metering member by metering drive means in order to feed a molding material, having been fed into a cylinder member, toward a front end of a metering member while melting the molding material, to thereby store the molding material in a space ahead of an injection member and retract the injection member by pressure of the molding material;
- and
- (b) advancing the injection member through operation of a linear motor device in order to inject the stored molding material.
Dependencies are inferred from the claim text.