A plasticization device that plasticizes a material, includes: a drive motor; a rotor that is to be rotated by the drive motor and has a groove-forming surface in which a curved projection strip portion is formed from a peripheral edge of a circular central portion toward an outer periphery of the rotor; a barrel that faces the groove-forming surface and includes a communication hole at a position facing the central portion of the groove-forming surface; and a heating unit that heats the material supplied between the rotor and the barrel, the rotor includes a protrusion protruding from the central portion toward the communication hole, and

0.28≤S2/S1≤1.03  (1),

wherein S1 is an area of the central portion and S2 is a maximum area of a cross section of the protrusion along the groove-forming surface.

A plasticization device that plasticizes a material, includes: a drive motor; a rotor that is to be rotated by the drive motor and has a groove-forming surface in which a curved projection strip portion is formed from a peripheral edge of a circular central portion toward an outer periphery of the rotor; a barrel that faces the groove-forming surface and includes a communication hole at a position facing the central portion of the groove-forming surface; and a heating unit that heats the material supplied between the rotor and the barrel, the rotor includes a protrusion protruding from the central portion toward the communication hole, and

0.28≤S2/S1≤1.03  (1),

wherein S1 is an area of the central portion and S2 is a maximum area of a cross section of the protrusion along the groove-forming surface.

A control device for an injection molding machine is equipped with a pressure acquisition unit configured to acquire a resin pressure, a pressure reduction control unit configured to, after the screw has reached a predetermined metering position, reduce the resin pressure to a target pressure by performing at least one of reverse rotation and sucking back of the screw, and a standby pressure control unit configured to, after the resin pressure has reached the target pressure, keep the resin pressure within a predetermined range by causing the screw to be rotated in a state in which a position of the screw in an axial direction of the cylinder is maintained.

An injection apparatus of the invention injects a molding material supplied from a material supply port, and includes a die, a material supply apparatus that extrudes the molding material that is thread-like or strip-like via the die, and a material guide apparatus that guides the molding material supplied via the die to the material supply port. The material discharge port of the material supply apparatus and the die protrude downward in the material supply apparatus, and a pressure inside the material guide apparatus is reduced by a pressure reducing apparatus from a pressure reducing port provided above the material discharge port of the material supply apparatus and the die.

A control device for an injection molding machine including a cylinder into which a resin is supplied and a screw that moves forward and rearward and rotates inside the cylinder, includes a metering control unit that performs metering of the resin inside the cylinder by controlling forward rotation and rearward movement of the screw until the screw has been moved rearward to a predetermined metering position, based on predetermined metering conditions, a rearward movement speed acquisition unit acquiring a rearward movement speed of the screw, a speed determination unit that determines a suck back speed for causing a resin pressure to reach a target pressure, based on the rearward movement speed acquired during metering by the rearward movement speed acquisition unit, and a suck back control unit causing the screw to move further rearward based on the suck back speed, after the screw has reached the predetermined metering position.

A control device for an injection molding machine that performs a metering of a resin while the resin is being melted inside a cylinder, includes a pressure acquisition unit that acquires a pressure of the resin, a reverse rotation control unit that causes a screw to be rotated in reverse so as to reduce the pressure of the resin, after the screw has been moved rearward to a predetermined metering position, a judgment unit that judges whether or not the pressure of the resin has reached a predetermined rearward movement initiation pressure, after the reverse rotation of the screw is started, and a rearward movement control unit which causes the screw to be moved rearward, in the case it is judged that the pressure of the resin has reached the rearward movement initiation pressure.

A plasticization device includes: a rotor rotated by a drive motor and having a groove forming surface in which a first groove portion is formed along a rotation direction; a rotor case configured to accommodate the rotor; a barrel facing the groove forming surface and having a through hole; a first heating unit configured to heat the rotor or the barrel; and a cooling mechanism configured to cool a side surface of the rotor. In the plasticization device, a material supplied between the first groove portion and the barrel is plasticized by rotation of the rotor and heating by the first heating unit to flow out from the through hole, and the side surface of the rotor has a material guiding port configured to guide the material to the first groove portion, and a second groove portion configured to feed the material supplied between the rotor and the rotor case to the material guiding port.

The plasticization device includes: a rotor rotating centered on a rotation axis by a drive motor and having a groove forming surface in which a first groove portion is formed along a rotation direction; a rotor case configured to accommodate the rotor; a barrel facing the groove forming surface and having a through hole; and a heating unit, in which a material supplied between the first groove portion and the barrel is plasticized by rotation of the rotor and heating by the heating unit to flow out from the through hole, and a side surface of the rotor has a material guiding port configured to guide the material to the first groove portion, and a second groove portion configured to feed the material supplied between the rotor and the rotor case to the material guiding port.

A mold tool is provided that includes plural mold sub-volumes configured to receive a sealant, a mold channel in fluid communication with the mold sub-volumes, a sealant injection port in fluid communication with the mold channel, vacuum application ports in fluid communication with the mold sub-volumes, and an air control system. The air control system is operably coupled to the mold sub-volumes and the mold channel, and is configured to apply a vacuum to the mold sub-volumes via the vacuum application ports.

A mold tool is provided that includes plural mold sub-volumes configured to receive a sealant, a mold channel in fluid communication with the mold sub-volumes, a sealant injection port in fluid communication with the mold channel, vacuum application ports in fluid communication with the mold sub-volumes, and an air control system. The air control system is operably coupled to the mold sub-volumes and the mold channel, and is configured to apply a vacuum to the mold sub-volumes via the vacuum application ports.