Provided is a controller for an injection molding machine including an injecting member configured to inject a molding material from a cylinder to a mold part, and a drive source configured to cause the injecting member to operate. The controller includes a cold-start prevention part configured to, when a first condition is met, restrict an operation of the injecting member during a cold-start prevention time that is set in advance. When the first condition is met, the cold-start prevention part determines whether or not a second condition, which is different from the first condition, is met to determine whether or not a value shorter than an initial value will be used as the cold-start prevention time.

A production management device includes circuitry configured to display, on a display unit, detection results detected by a detection unit in a process of producing a product upon a plurality of products being produced by a production device; and display, upon receiving selection of a detection result or information for identifying the product, a detection result of a first product together with a detection result of a second product and a detection result of a third product on the display unit, the first product being identified by the detection result or the information for identifying the product, the second product being produced by the production device immediately before the first product, and the third product being produced by the production device immediately after the first product.

An injection molding apparatus comprising: An actuator having a driver receiving electrical energy or power from an electrical drive, the electrical drive comprising an interface, the electrical drive being housed within or by and actuator housing or being mounted on or to the housing, the housing and the electrical drive being mounted on, to or in close proximity to the heated manifold, a cooling device disposed between the heated manifold and the housing adapted to substantially isolate or insulate at least the electrical drive from communication with heat emanating from the heated manifold or to heat sink or absorb heat communicated or communicable to the electrical drive from the heated manifold or both.

An injection device includes a heating cylinder, a screw, a screw driving device, and a nozzle touch device. The screw driving device has a load cell configured to detect an injection pressure at a position separated from an extension line of an axis of the screw. When an injection nozzle is caused to touch a sprue of a mold by the nozzle touch device, a pressure of the load cell is monitored, and misalignment between the injection nozzle and the sprue is detected based on the pressure.

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 molded article is formed using an injection molding apparatus by heating a thermoplastic material to a melt temperature, injecting the heated thermoplastic material into at least one mold cavity of an injection molding apparatus at a substantially constant pressure, and cooling the thermoplastic material to an ejection temperature. The thermoplastic material is heated to a reduced melt temperature which is less than a minimum conventional melt temperature.

An injection device includes a heating cylinder having a gas injection port, a screw, a gas supply device and a control unit. The interior of the heating cylinder is divided into a plasticization zone on an upstream side, a starvation zone on a downstream side of the plasticization zone, and a compression zone on the downstream side of the starvation zone. The gas injection port is provided with an injection valve, and gas is supplied into the heating cylinder in the starvation zone. The heating cylinder includes a pressure sensor. The control unit is configured to control the injection valve based on a resin pressure detected by the pressure sensor.

A material discharge device includes: a drive motor; a screw having a groove formation surface and configured to rotate; a barrel having a facing surface and formed with a communication hole through which a plasticized material flows; a heating unit configured to heat the material; a nozzle from which the material is injected to an outside; and a plurality of measurement units configured to measure a pressure or a temperature of the material. The measurement units are disposed at an outer periphery of a nozzle channel wall, and a thickness of the nozzle channel wall satisfies the following (1) or (2): (1) when the nozzle channel wall is made of a material containing iron as a main component, the thickness of the nozzle channel wall is 0.2 mm or more and 2.5 mm or less; and (2) when the nozzle channel wall is made of a material containing aluminum as a main component, the thickness of the nozzle channel wall is 0.2 mm or more and 4 mm or less.

A plurality of AE sensors 6r, 6f are provided on a heating cylinder 2 at a plurality of different positions Xr, Xf in a forward-rearward direction Fs so as to detect AE waves AE waves We. Position data Dx related to a position where each AE wave We is generated are obtained on the basis of arrival times Tr, Tf of the AE wave We obtained from the AE sensors 6r, 6f. For each combination of a predetermined sampling period Tp and a predetermined set of the position data Dx, the number of times AE wave signals Sfe, etc. related to the generated AE wave We have exceeded a threshold value L set beforehand is obtained as attack number data Da. The number of AE wave signal components Sp having exceeded a threshold value set beforehand is obtained as event count data De. At least a generation pattern Ps of sets of the attack number data Da and sets of the event count data De which correspond to sets of the position data Dx is graphically displayed.

A flow rate adjusting device includes a main body portion including a supply flow path formed with a first opening through which a plasticized material obtained by plasticizing at least a part of a material containing a metal particle is supplied and a second opening through which the plasticized material is ejected, and an intersecting hole intersecting the supply flow path; a tubular sleeve disposed inside the intersecting hole and including a through-hole at a position overlapping the supply flow path; and a shaft-shaped valve unit disposed inside the sleeve, wherein the valve unit includes a concave portion at a position overlapping the supply flow path, and rotates inside the intersecting hole for changing a position of the concave portion, to change a flow path cross-sectional area of the supply flow path for adjusting a flow rate of the plasticized material ejected from the second opening.