A remote controller can be provided on any apparatus that employs feedback control from a native controller to add functionality to the apparatus where the native controller is not capable of providing such functionality independently.

A remote controller can be provided on any apparatus that employs feedback control from a native controller to add functionality to the apparatus where the native controller is not capable of providing such functionality independently.

A screw can be driven along an axial direction of a heating barrel and rotatable. An injection piston drives the screw along the axial direction. An injection hydraulic cylinder is partitioned into a first chamber in which pressured hydraulic oil for driving the injection piston is supplied and a second chamber from which hydraulic oil is discharged, and drives the injection piston in the axial direction by hydraulic pressure. A first oil discharge port is blocked by the injection piston when the injection piston advances to a holding pressure switching position. A second oil discharge port can discharge the hydraulic oil from the front chamber regardless of the position of the injection piston. The first oil discharge port is disposed at a position opposed to the first oil discharge port across a center axis of the injection hydraulic cylinder, and is connected to the first oil discharge port.

A screw can be driven along an axial direction of a heating barrel and rotatable. An injection piston drives the screw along the axial direction. An injection hydraulic cylinder is partitioned into a first chamber in which pressured hydraulic oil for driving the injection piston is supplied and a second chamber from which hydraulic oil is discharged, and drives the injection piston in the axial direction by hydraulic pressure. A first oil discharge port is blocked by the injection piston when the injection piston advances to a holding pressure switching position. A second oil discharge port can discharge the hydraulic oil from the front chamber regardless of the position of the injection piston. The first oil discharge port is disposed at a position opposed to the first oil discharge port across a center axis of the injection hydraulic cylinder, and is connected to the first oil discharge port.

Disclosed is a hydraulic system for a molding system, the molding system having a clamp actuator and an injection actuator, the hydraulic system comprising a clamp accumulator for storing hydraulic fluid for use in actuating the clamp actuator; an injection accumulator for storing hydraulic fluid for use in actuating the injection actuator; a pump for conveying hydraulic fluid to the clamp accumulator and the injection accumulator; and a selector valve for selectively fluidly connecting the pump to one of the clamp accumulator and the injection accumulator.

Disclosed is a hydraulic system for a molding system, the molding system having a clamp actuator and an injection actuator, the hydraulic system comprising a clamp accumulator for storing hydraulic fluid for use in actuating the clamp actuator; an injection accumulator for storing hydraulic fluid for use in actuating the injection actuator; a pump for conveying hydraulic fluid to the clamp accumulator and the injection accumulator; and a selector valve for selectively fluidly connecting the pump to one of the clamp accumulator and the injection accumulator.

The invention relates to a system for controlling a shutter arranged to slide in a plastic material injection nozzle, comprising: a hydraulic or pneumatic actuating cylinder (1) coupled to said shutter to make it slide between a shutting off position of the nozzle and a maximum opening position of the nozzle, a device (2) for controlling the actuating cylinder (1), comprising at least two elements among: an element adapted to regulate the stroke of the actuating cylinder to a first constant speed, an element adapted to regulate the stroke of the actuating cylinder to a second constant speed, greater than the first speed, an element adapted to selectively block the stroke of the actuating cylinder, a sequential control unit comprising at least two control paths (30, 31, 32) configured to send selectively an electrical control signal to the device (2) via one and/or the other of said control paths (30,31,32) such that: under the effect of a first signal sent via the first control path (30), one of the elements is activated, under the effect of a second signal sent via the second control path (31), another element is activated.

The invention relates to a system for controlling a shutter arranged to slide in a plastic material injection nozzle, comprising: a hydraulic or pneumatic actuating cylinder (1) coupled to said shutter to make it slide between a shutting off position of the nozzle and a maximum opening position of the nozzle, a device (2) for controlling the actuating cylinder (1), comprising at least two elements among: an element adapted to regulate the stroke of the actuating cylinder to a first constant speed, an element adapted to regulate the stroke of the actuating cylinder to a second constant speed, greater than the first speed, an element adapted to selectively block the stroke of the actuating cylinder, a sequential control unit comprising at least two control paths (30, 31, 32) configured to send selectively an electrical control signal to the device (2) via one and/or the other of said control paths (30,31,32) such that: under the effect of a first signal sent via the first control path (30), one of the elements is activated, under the effect of a second signal sent via the second control path (31), another element is activated.

An injection molding apparatus including: a valve pin driven by an actuator, the valve pin extending axially through at least a portion of the channel length of the fluid flow channel, the fluid flow channel and the valve pin being configured or adapted such that the valve pin is movable axially upstream and downstream between an upstream position where the downstream flow of the injection fluid is restricted by a bulbous protrusion (B) of the pin being axially aligned (AL) with the throat (T) of the channel, an intermediate position where downstream flow of injection fluid is unrestricted (WG) and a fully downstream position where downstream flow of injection fluid is stopped at both the gate and at the throat.

A closing unit for a shaping machine includes mutually moveable mold mounting plates suitable for carrying mold tool portions, a first hydraulic cylinder adapted to apply a closing force to the mold mounting plates, a second hydraulic cylinder, and a pressure storage device connected to the first hydraulic cylinder and adapted to store a pressure prevailing in the first hydraulic cylinder upon pressure relief at a storage device pressure. A hydraulic interconnection of the pressure storage device with the second hydraulic cylinder allows the storage pressure stored in the pressure storage device to be used for locking and/or unlocking the locking device.