The injection molding apparatus includes a fixed mold, a movable mold facing the fixed mold, a mold clamping unit that moves the movable mold with respect to the fixed mold, and an injection unit that injects a molten material into a cavity defined by the fixed mold and the movable mold. At least one of the fixed mold and the movable mold is formed with a flow path communicating with the cavity, and a working fluid that pressurizes and pushes out a molded article in the cavity flows through the flow path.

An injection molding system includes an injection station, a molding device, and a plunger. The injection station includes a platform including an opening and an injector over the platform. The molding device is disposed between the platform and the injector and over the opening, wherein the molding device includes a mold cavity and a clamping unit for clamping the molding device. The plunger under the platform, wherein the plunger includes a base and a rod extendable through the opening toward the molding device and retractable toward the base. An injection molding method includes conveying a molding device to an injection station and disposing the molding device between an injector and a platform; disposing a plunger under the platform; moving the injector towards the molding device; applying a plunging force on the molding device by extending the rod through the opening; and injecting a molding material into a mold cavity.

An injection molding system includes an injection station, a molding device, and a plunger. The injection station includes a platform including an opening and an injector over the platform. The molding device is disposed between the platform and the injector and over the opening, wherein the molding device includes a mold cavity and a clamping unit for clamping the molding device. The plunger under the platform, wherein the plunger includes a base and a rod extendable through the opening toward the molding device and retractable toward the base. An injection molding method includes conveying a molding device to an injection station and disposing the molding device between an injector and a platform; disposing a plunger under the platform; moving the injector towards the molding device; applying a plunging force on the molding device by extending the rod through the opening; and injecting a molding material into a mold cavity.

An injection molding apparatus comprises a support base and a mold carrier removably mounted to the support base. The mold carrier includes a mounting plate with attachment features for engaging the support base. A mold with two mold plates is slidably mounted to the mounting 5 plate. A clamp is operable to move the plates between open and closed positions. In the closed position, the plates abut one another. In the open position, the plates are spaced apart for removing molded articles.

A rotor manufacturing method, which is method for manufacturing a rotor that includes a rotor core and a magnet inserted into a slot formed in the rotor core, includes a magnet-insertion step of inserting the magnet into the slot; and a fixing-material-injection step of injecting a fixing material into a space between an inner surface of the slot and the magnet from a plurality of fixing-material-injection portions of the slot. In the fixing-material-injection step, a time for starting injection of the fixing material into the slot is made to differ among the plurality of fixing-material-injection portions.

A rotor manufacturing method, which is method for manufacturing a rotor that includes a rotor core and a magnet inserted into a slot formed in the rotor core, includes a magnet-insertion step of inserting the magnet into the slot; and a fixing-material-injection step of injecting a fixing material into a space between an inner surface of the slot and the magnet from a plurality of fixing-material-injection portions of the slot. In the fixing-material-injection step, a time for starting injection of the fixing material into the slot is made to differ among the plurality of fixing-material-injection portions.

A run-around circuit makes a hydraulic fluid discharged from a rod-side chamber along with a forward movement of a piston in an injection cylinder flow into a head-side chamber. A servo valve is provided in the run-around circuit and is connected to a tank. In a first state, the servo valve permits flow from the rod-side chamber to the head-side chamber, while prohibits flow from the rod-side chamber to the tank. In a second state, the servo valve prohibits flow from the rod-side chamber to the head-side chamber, while permits flow from the rod-side chamber to the tank. The servo valve can control the flow rate of the hydraulic fluid discharged from the rod-side chamber in each of the first state and second state.

Disclosed is a system and a related method for regulating a temperature in a shooting pot associated with an injection molding machine. The structure includes, amongst other things, a cooling circuit and thermocouple proximate a plunger entry end of the shooting pot as well as a cooling adjustment unit for controlling an amount of cooling provided by the cooling fluid. In operation a controller coupled with the cooling adjustment unit and the thermocouple controls the cooling adjustment unit based on a temperature reading associated with the thermocouple.

An injection molding machine capable of continuously injecting a molten resin is provided. An injection molding machine including: a plurality of cylinders; a plurality of pistons configured to extrude the molten resin inside the respective cylinders; a plurality of drive parts configured to drive the respective pistons; an injection part configured to inject the molten resin extruded from the plurality of cylinders; and a controller configured to control the plurality of drive parts. The controller controls the plurality of drive parts in such a way that a period during which the molten resin is injected from a first cylinder overlaps a period during which the molten resin is injected from a second cylinder and the molten resin is continuously injected from the plurality of cylinders.

An injection molding machine that contributes to improving the quality of a workpiece is provided. An injection molding machine configured to causes torpedo pistons to be slid in one way to thereby plasticize a resin material supplied to a first space of a cylinder, and causes a molten resin to flow into a second space of the cylinder and causes the torpedo pistons to be slid in the other way to thereby inject the molten resin. The injection molding machine includes pressurizing pistons inserted into the torpedo pistons so that the pressurizing pistons can be slid in such a way that an amount of protrusion of the cylinder into the second space of the cylinder with respect to the torpedo pistons is changed, and energizing means for energizing the pressurizing pistons toward the second space of the cylinder.