A phase adjusting device includes: a torque acquisition unit acquiring a torque; a position acquisition unit acquiring the rotational position of the first motor; a first motor control unit rotating the first motor in a first rotational direction until the torque exceeds a threshold, and then in a second rotational direction until the torque exceeds the threshold again; a storage control unit storing, in a storage unit, a first rotational position when the first motor is rotated in the first rotational direction and the torque exceeds the threshold and a second rotational position when the first motor is rotated in the second rotational direction and the torque exceeds the threshold again; a phase position calculator calculating a third rotational position, based on the first and second rotational positions; and a second motor control unit rotating the first motor to the third rotational position.

Injection molding apparatus (1) comprising:

an actuator (14, 940, 941, 942) comprising a rotor (940r, 941r, 942r) controllably rotatable by electric power, the actuator (14, 940, 941, 942) being interconnected to a controller (16) that generates drive signals (DC),

an electrical drive device (940d, 941d, 942d) comprising an interface that receives the drive signals (DC) and controllably distributes electrical energy or power in controllably varied amounts according to the drive signals (DC) to a driver (940dr, 941dr, 942dr) that drives the rotor (940r, 941r, 942r),

a valve pin (1040, 1041, 1042) having an axis (X) and a control surface (43, 45, 102m) drivable upstream and downstream through a downstream feed channel (17, 19, 160, 940c, 941c, 942c) the downstream feed channel having a complementary surface (47, 103s) adapted to interface with the control surface (43, 45, 102m) upstream and away from the gate.

An apparatus for controlling the rate of flow of fluid mold material comprising: a manifold, a valve pin having a pin axis, a pin connector and a stem, the valve pin being drivable into and out of open and closed positions relative to the gate, an electric actuator comprising an electric motor comprised of a motor housing that houses a drive shaft having a drive gear and a drive axis, a transmission comprised of a transmission gear having a gear axis, the drive gear, the transmission gear and the valve pin being drivably interconnected and arranged such that the drive axis and the gear axis are non-coaxially mounted or disposed relative to each other and the valve pin is drivable linearly along the pin axis, wherein one or the other of the motor housing or the transmission housing are removably attached to a top clamping or mounting plate that is mounted upstream of the manifold and fixedly interconnected to a mold.

An injection molding system comprising: a first selected valve, one or more downstream valves, delivering a fluid to a mold cavity, at least one fluid property sensor that detects a flow front of fluid material flowing downstream through the mold cavity at a trigger location within the cavity disposed between the first gate and at least one selected downstream gate, a controller instructing an actuator associated with the downstream gates to open the gates at a predetermined open gate target time on a first injection cycle, each valve associated with a position sensor that detects opening of a gate at an actual open gate time to the controller, the controller automatically adjusting time of instruction to open the gates on a subsequent injection cycle by an adjustment time equal to any delay in time between the predetermined open gate target time and the actual open gate time.

A system for coinjection molding a multi-layer container includes an injection molding apparatus, a camera, and a controller. The injection molding apparatus is configured to coinject a plurality of polymeric materials into a mold cavity to form a multi-layer container including an inner layer, an outer layer, and a barrier layer located between the inner layer and the outer layer. The camera is configured to capture an image indicating a location of the barrier layer within the multi-layer container. The controller is configured to monitor the location of the barrier layer using the image captured by the camera, compare the location of the barrier layer to a threshold location, and provide a control signal to the injection molding apparatus based on the location of the barrier layer relative to the threshold location.

When an injection molding machine performs molding, the mold clamping force on the mold is adjusted on the basis of a mold displacement of the mold or the injection peak pressure and injection foremost position so that the molding is performed without causing flash and by an appropriate mold clamping force with which energy can be reduced. The amount of mold displacement and also the injection peak pressure and the injection foremost position are monitored during automatic operation. If there occurs no mold displacement change exceeding a threshold or if there occurs no injection peak pressure anomaly or injection foremost position anomaly exceeding thresholds, the automatic operation is continued. If the mold displacement change occurs or if the injection peak pressure anomaly and the injection foremost position anomaly occur, the operation of the injection molding machine is stopped.

An injection molding machine which includes a mold clamping device (20) that opens and closes a mold (90) and clamps the closed mold, an injection device (30) that injects a material into the clamped mold, and an ejecting device (21) that ejects a molded product (100) molded in the mold is provided. The injection molding machine further includes a plurality of cameras (2) that photograph the injection molding machine to generate image data, a memory (6) that records the image data, an input device that sets at least one photographing time by selecting the start or end of each process in a molding cycle, and a control device that controls the camera to photograph the injection molding machine at the at least one photographing time, and controls the memory to record the image data.

A control device which is for an injection molding machine and which includes a suck-back control unit that causes a screw which has reached a prescribed measurement position to be sucked back at a prescribed suck-back velocity; a reverse rotation control unit that causes the screw to be reversely rotated on the basis of a prescribed reverse rotation condition value at and after the initiation of the suck-back; a measurement unit that measures a reverse rotation state value of the screw; and a suck-back completion control unit that causes the suck-back to be completed when the reverse rotation state value has reached a threshold value.

A system and method for determining the position of a flow of melt within an injection molding system comprises a switch and a pin that actuates the switch. The pin has a first end positioned closer to the anticipated flow path of the melt and a second end that is positioned to be in contact with the switch, such that when melt enters the anticipated flow path, the pin is pushed to activate the switch.

A method and system for adjusting melt pressure in an injection molding material that allows calculating a melt pressure of a molten plastic material to be injected and based on the calculated melt pressure and a desired melt pressure adjusting operation of an injection molding machine. This control of an injection molding cycle using the method and system of plastic melt pressure determination allows production of parts of increased quality and consistency.