A controller of an injection molding machine includes a receiving part configured to receive a selection of an injection molding process and a selection of an item that indicates either setting information indicative of a setting of the process or a performance value detected in the process, and an output part configured to output display information that graphically represents changes in the setting information or in the performance value based on the item preliminarily associated with the process for which the selection was received when the receiving part receives the selection of the process.

A database 3 is previously set which is related to oxidation induction times Tg indicating the deteriorations of individual resins R based on the combinations of a plurality of oxidation induction conditions X including at least different types of resins R. and different heating temperatures TH, when the molding condition is set, oxidation induction time derivation processing is performed such that an oxidation induction time Tg based on oxidation induction conditions X including at least the resin R which is used and the heating temperature TH which is set is determined from the database 3 and assistance processing is performed in which the determined oxidation induction time Tg is compared with a residence time Ts until the molten resin R is charged into a mold 2 that is calculated from the set molding condition and in which when the oxidation induction time Tg is shorter than the residence time Ts, the molding condition is corrected so as to shorten the residence time Ts or to prolong the oxidation induction time Tg.

A method of performing an injection cycle having a duration comprising: beginning the injection cycle with the valve pins associated with two or more nozzles in a gate closed position, selecting a first one of the two or more nozzles and controllably driving its associated valve pin from the gate closed position to a selected first axial upstream position, upon downstream flow of the injection fluid through a cavity the preselected distance, controllably driving the valve pin associated with the other of the two or more nozzles to a selected second axial position upstream, holding or controllably driving the valve pin associated with the first one of the two or more nozzles in or to one or more reduced flow axial upstream positions that are partially closed.

A method of performing an injection cycle having a duration comprising: beginning the injection cycle with the valve pins associated with two or more nozzles in a gate closed position, selecting a first one of the two or more nozzles and controllably driving its associated valve pin from the gate closed position to a selected first axial upstream position, upon downstream flow of the injection fluid through a cavity the preselected distance, controllably driving the valve pin associated with the other of the two or more nozzles to a selected second axial position upstream, holding or controllably driving the valve pin associated with the first one of the two or more nozzles in or to one or more reduced flow axial upstream positions that are partially closed.

A control device for an injection molding machine is equipped with a pressure acquisition unit that acquires a pressure of a resin, a reverse rotation control unit that causes a screw to be rotated in reverse, after the screw has reached a predetermined metering position, a measurement unit that measures an elapsed time or a rotation amount of the screw from when the screw has reached the predetermined metering position, and a rearward movement control unit that initiates sucking back of the screw in an overlapping manner with the reverse rotation of the screw, in the case that a predetermined rearward movement initiation time has elapsed, or in the case that the screw has been rotated by a predetermined rearward movement initiation rotation amount, from when the screw has reached the predetermined metering position.

In the present invention, constructed is a highly reliable system that does not allow unforeseen conditions to occur in the remote diagnosis of a clamp device. All combinations of status of a state detection switch mounted on a clamp device are anticipated in advance by a recursive method, and the states are defined with no omissions. A control unit 9 includes: a main body memory 9c that stores the ON/OFF state of a state switch together with the status of an injection molding machine main body, the clamp status and time information; and a main body communication unit 9d which is capable of short-range wireless communication. A message diagnosing a failure is stored in a smartphone 12 for all combinations of the ON/OFF state of the state detection switch for each of the following cases: whether in mold replacement mode or not; and whether a clamp device is in a clamped state or an unclamped state, or in a state other than the forgoing. The history of the ON/OFF state of the state detection switch with respect to the status of the main body and the clamp status is read from the main body memory 9c by wireless communication, and a corresponding message is displayed.

The invention relates to a method for improving an injection molding process, wherein a product is produced by an injection molding apparatus through an injection molding process from a precursor charge of precursor material based on process settings applied to the injection molding apparatus, wherein the injection molding process comprises injecting the precursor charge into a mold of the injection molding apparatus, wherein the precursor charge is produced through a precursor production process described by precursor production parameters, wherein the applied process settings are determined prior to the injection molding process by a computer simulation of the injection molding process executed by a computing apparatus, which computer simulation is based on a simulation model, on the precursor production parameters and on given process conditions of the injection molding process, which given process conditions comprise a shape of the mold. The invention also relates to a corresponding system.

A controller of an injection molding machine includes an acquisition part configured to acquire signals from a detection device that detects an operation of the injection molding machine, a reading part configured to read a file representing a past performance value which is a detection result of operations of the injection molding machine or of another injection molding machine from a storage medium in accordance with a manipulation received by an operating device, and an output part configured to output a screen including first waveform information that represents a change of the past performance value indicated in the file and second waveform information that represents a change of a performance value indicated by the signals acquired by the acquisition part.

In an injection molding machine, operating state identification codes, a change between which coincides with a change pattern stored in a change pattern storage unit, are replaced with a change pattern-associated identification code associated with the change pattern. This allows even a less-experienced person to easily grasp work contents indicated by an operating state.

An injection molding apparatus, comprising: an injection molding machine; a distribution manifold having a distribution channel, a clamp device arranged to clamp together, under a selected clamp force, a mold system having a plurality of mold cavities one or more first downstream channels fluidly coupled to the distribution channel; one or more first gates arranged to deliver injection fluid to a first cavity; one or more second downstream channels fluidly coupled to the distribution channel; one or more second gates arranged to deliver injection fluid to a second cavity; a control system adapted to: instruct the first upstream valve and a second upstream valve; and at least one downstream valve having a valve pin having a control surface for controlling flow of injection fluid.