Patent ID: 6017210
Filing Date: 2000-01-25
Classification: B29C

Abstract:
An injection machine provided with a dwelling machine, said injection machine comprising:a heating cylinder;an injection screw rotatably and slidably mounted in the heating cylinder;a screw driving device and rotating device located behind the heating cylinder;a head member having opposed sides attached at one opposed side to an end of the heating cylinder; anda nozzle member projected from the head member at another of said opposed sides;said dwelling machine comprising:a dwelling cylinder attached to said head member at the same side as the heating cylinder;a dwelling plunger slidably mounted in the dwelling cylinder; anddriving means for the dwelling plunger provided behind the dwelling cylinder;wherein said head member further comprises:a resin passage therewithin having at least one corner and extending from a portion where the heating cylinder is attached, through a portion where the dwelling cylinder is attached, to a portion where the nozzle member is attached, said resin passage providing fluid communication between said heating cylinder and said nozzle member;a valve along said resin passage between the portion where the heating cylinder is attached and the portion where the dwelling cylinder is attached;a resin trap proximate to and in fluid communication with said resin passage which has a predetermined volume for a resin to be packed, said resin trap located at one of said at least one corners and defined by said dwelling cylinder and the position of said dwelling plunger; and whereinsaid predetermined volume is evacuated into said resin passage upon movement of said dwelling plunger.