An injection apparatus includes (a) a barrel; (b) a nozzle at a front end of the barrel; (c) a screw in the barrel; and (d) a drive assembly including: (i) a housing having a front end coupled to the barrel; (ii) a spindle in the housing and fixed to the screw; (iii) a first motor in the housing and having a hollow first rotor through which the spindle passes. The first rotor is coupled to the spindle for driving rotation of the screw about the axis. The drive assembly further includes (iv) a second motor in the housing axially rearward of the first motor. The second motor has a hollow second rotor through which the spindle passes. The second rotor is coupled to the spindle for translating the screw along the axis in response to rotation of the second rotor relative to the spindle.

An abnormality detection device includes a servo CPU; a physical quantity detection unit which detects a physical quantity such as a load applied on a servo motor which operates a movable part included in an injection molding machine. The abnormality detection device further includes a first storage unit directly readable/writable by the servo CPU; and a second storage unit not directly readable/writable by the servo CPU. A reference physical quantity is stored in the first and second storage units. The servo CPU outputs an instruction for stopping or decelerating the movable part in response to a first physical quantity deviation, which is a deviation between a reference physical quantity read from the first storage unit and a current physical quantity, or a second physical quantity deviation, which is a deviation between a reference physical quantity read from the second storage unit and a current physical quantity, exceeds a threshold value.

An injection molding machine includes: a first driving device rotating a screw provided inside a heating cylinder; a second driving device moving the screw forward and backward; a metering control section configured to, by controlling the first driving device and the second driving device, to meter resin while melting the resin, and thereafter rotate the screw in reverse to thereby reduce the pressure of the resin; a first sensor unit for detecting the pressure; a second sensor unit for detecting one or more kinds of physical quantities that affect the change of the pressure; and a prediction section predicting decompressing rotation information based on the pressure detected by the first sensor unit and the one or more kinds of physical quantities detected by the second sensor unit. The metering control section controls the first driving device based on the decompressing rotation information predicted by the prediction section.

An injection molding device includes an injection machine, a molding die, and a high frequency oscillation device. The injection machine injects a resin material containing a dielectric heat generating material while keeping fluidity by temperature control. The molding die includes a cavity being a channel of flow of the resin material, and a pair of electrodes, each of which faces the cavity, the pair of electrodes being disposed to sandwich the resin material therebetween in a direction crossing a direction of the flow. The high frequency oscillation device applies a high frequency alternate-current voltage to the pair of electrodes.

An injection molding machine uses a controller to effectively control its operation. The controller may determine and/or receive information regarding the machine's maximum load capacity, and may also determine a current operational load value of the machine. The controller also may determine a number of set points used to operate the machine. The controller may cause the machine to operate at these set points, thereby resulting in the machine operating at or below the maximum load value by adjusting any number of machine parameters associated with the injection molding machine.

An injection molding machine uses a controller to effectively control its operation. The controller may determine and/or receive information regarding the machine's maximum load capacity, and may also determine a current operational load value of the machine. The controller may cause the machine to operate at any number of combinations of settings of operational parameters which result in the machine operating at or below the maximum load value by adjusting any number of machine parameters associated with the injection molding machine based on feedback sensors measuring real-time operating conditions of the machine.

A power supply device for a molding machine with an intermediate circuit, which can be connected with at least one drive of the molding machine and is suitable for supplying the at least one drive with electrical energy; a supply module connected to the intermediate circuit; an energy storage device connected to the intermediate circuit; and a closed loop control device for closed loop controlling an energy content of the energy storage device. The energy storage device can be closed loop controlled by means of the closed loop control device so that the energy content of the energy storage device does not go outside a range, in which a power input and/or a power output of the energy storage device is essentially constant.

An injection molding system includes: a first extruding member that extrudes a first molded article from a mold; a robot that transfers the first molded article extruded from the mold to an assembling position in relation to a second molded article in the mold; a second extruding member that extrudes the second molded article from the mold towards the first molded article retained at the assembling position by way of the robot, and assembles the second molded article to the first molded article; and a load detection unit that detects load applied to the second extruding member, in which defect discrimination of the first molded article, the second molded article, or an assembled state of the first molded article and the second molded article is performed, based on load detected by the load detection unit when the second molded article is assembled to the first molded article.

A molding system for assembling a part by moving a workpiece gripped by a hand of a robot toward a mold of an injection molding machine, while rotating a molded article supported on the mold and the workpiece relative to each other, whereby the molded article and the workpiece are screw-engaged. The molding system includes a rotation detector for detecting a rotational amount between the molded article and the workpiece, an assembled state judging unit for judging if the assembled part is in a predetermined state, and a control unit for relatively rotating and displacing the molded article and the workpiece until the rotational amount exceeds a predetermined rotational amount and the assembled state becomes the predetermined state.

An injection molding machine includes: a fixed side member; and a movable side member fixed to the fixed side member, the movable side member being driven by a motor in order to perform injection molding of a molded product. The injection molding machine further includes a power feeding apparatus, one or more motors, and at least one servo amplifier. The power feeding apparatus converts a three-phase AC voltage into a DC voltage. The one or more of the motors are provided in the movable side member and drive the movable side member. The at least one servo amplifier is provided in the movable side member and drives one of the one or more of the motors by the DC voltage being supplied thereto through a DC power supply line.