Abstract: An embodiment of the present invention provides an injection device including a screw that includes a plurality of outer circumferential protrusions, each of the plurality of outer circumferential protrusions being provided with an outer circumferential protrusion slope and a second outer circumferential protrusion slope. A bush of the injection device includes a plurality of inner circumferential protrusions, each of the plurality of inner circumferential protrusions being provided with an inner circumferential protrusion slope and a second inner circumferential protrusion slope. A rear end of each of the plurality of outer circumferential protrusions and a front end of each of the plurality of inner circumferential protrusions include no flat surface.

Abstract: In an injection device according to an embodiment, each of a plurality of outer peripheral protrusions of a screw is formed with an outer peripheral protrusion inclined surface, and each of a plurality of inner peripheral protrusions of a through-hole of a bush is formed with an inner peripheral protrusion inclined surface. The injection device advances the bush until a linear-motion torque exceeds a linear-motion torque threshold, and, if a rotation torque exceeds a rotation torque threshold before the linear-motion torque exceeds the linear-motion torque threshold, ends control processing when the linear-motion torque exceeds the linear-motion torque threshold.

Abstract: An injection device according to one embodiment of the present invention monitors the linear torque of a linear motor and the rotary torque of a rotary motor using a first detection unit for detecting the linear torque and a second detection unit for detecting the rotary torque while controlling the linear motor and the rotary motor so that a bush is spline-fitted to a screw.

Abstract: To provide a heated cylinder for resin melting in a molding machine which realizes high material supply/transport performance, cost reduction, and more favorable maintenance performance, while making the plan view/plan sectional view shape of a resin charging port into a circular shape. The resin charging port of the heated cylinder is formed to include: an upper charging path section formed in a circular shape in a plan sectional view; a lower charging path section which is formed in a square shape or oblong hole shape in a plan sectional view; and an intermediate charging path section which smoothly links an inner surface of the upper charging path section and an inner surface of the lower charging path section.

Abstract: To provide a heated cylinder for resin melting in a molding machine which realizes high material supply/transport performance, cost reduction, and more favorable maintenance performance, while making the plan view/plan sectional view shape of a resin charging port into a circular shape.

Abstract: An injection device is provided with high convenience by the degrees of freedom in layout of a storage unit and peripheral equipment increasing by way of providing a supply unit with changeable supply direction of molding material. An injection device includes: a hopper that stores a molding material; an injection cylinder unit that heats the molding material to melt, and then injects the molding material thus melted; and a supply unit having formed inside thereof a supply hole for supplying the molding material stored in the hopper to the injection cylinder unit, in which the supply unit is fixed so that a position and orientation of an opening of the supply hole on a side of the hopper is changeable relative to the injection cylinder unit.

Abstract: A resin injection nozzle is provided with a first mating surface on an inner-diameter side and a second mating surface on an outer-diameter side relative to the first mating surface, and a through-hole is provided extending from a void defined between the first and second mating surfaces toward the distal end of the resin injection nozzle. Thus, gas generated from a molten resin can be effectively discharged.

Abstract: An injection device is provided with high convenience by the degrees of freedom in layout of a storage unit and peripheral equipment increasing by way of providing a supply unit with changeable supply direction of molding material. An injection device includes: a hopper that stores a molding material; an injection cylinder unit that heats the molding material to melt, and then injects the molding material thus melted; and a supply unit having formed inside thereof a supply hole for supplying the molding material stored in the hopper to the injection cylinder unit, in which the supply unit is fixed so that a position and orientation of an opening of the supply hole on a side of the hopper is changeable relative to the injection cylinder unit.

Abstract: A resin injection nozzle is provided with a first mating surface on an inner-diameter side and a second mating surface on an outer-diameter side relative to the first mating surface, and a through-hole is provided extending from a void defined between the first and second mating surfaces toward the distal end of the resin injection nozzle. Thus, gas generated from a molten resin can be effectively discharged.