Non-time dependent measured variables are used to effectively determine an optimal hold profile for an expanding crosslinking polymer part in a mold cavity. A system and/or approach may first inject molten expanding crosslinking polymer into a mold cavity, then measure at least one non-time dependent variable during an injection molding cycle. Next, the system and/or method commences a hold profile for the part, and upon completing the hold profile, the part is ejected from the mold cavity.

A mold apparatus including a mold, a bearing structure, and a sensing module is provided. The mold has a cavity. The sensing module includes a temperature sensor and a pressure sensor. The temperature sensor has a sensing portion and an abutting portion. The sensing portion is located in the mold and corresponds to a position in the cavity, and the abutting portion is located in the bearing structure. The pressure sensor is disposed in the bearing structure and corresponds to the abutting portion. The abutting portion is adapted to abut against the pressure sensor by a pressure of the position in the cavity.

A burden for setting is reduced. A display device for injection molding includes: a receiving unit configured to receive a selection of a defect phenomenon of a molding product manufactured by injection molding; and a display control unit configured to display parameters associated with the defect phenomenon of which the selection is received, in a selectable manner, in which the receiving unit is further configured to receive a selection from the parameters, and the display control unit is further configured to display information regarding the parameter of which the selection is received.

A hot runner process controller configured to monitor the status and operation of a hot runner system to autonomously generate information to improve the quality of injection molding process of a hot runner system having an inlet nozzle, one or more manifolds and one or more nozzles with actuator or without actuator, and one or more heating elements, the hot runner process controller is self-operating, and independent from the injection molding machine, includes: one or more sensors located on, in or at the hot runner system to detect the status and/or the operation of the hot runner system, and a processing unit and a memory. The processing unit is connected to the one or more sensors, wherein the memory stores data and program codes. The processing unit is configured to load and execute the program code to compare sensor information with the stored data and to determine if the hot runner system is in an operable status, and in case the hot runner system is in an operable status, configured to generate status information to activate the one or more heating elements and/or the one or more actuators enabling a production operation of the injection molding machine. In case the hot runner system is not in an operable status, configured to generate status information to deactivate the one or more heating elements and/or close or deactivate the one or more actuators disabling a production operation of the injection molding machine.

A detector attachment unit is provided that has at least two or more mounting hole sections for which the temperature detector is detachably attached to the outer surface of the heating cylinder and the temperature detector can be attached at different selected positions in at least the axial direction of the heating cylinder. The temperature control system includes an inner wall face temperature conversion function unit to perform conversion processing to convert the heating temperature detected by the temperature detector to the inner wall face temperature of the heating cylinder, and an inner wall face temperature display function unit to perform at least display processing on the inner wall face temperature obtained by this inner wall face temperature conversion function unit.

An injection molding adaptive compensation method based on melt viscosity fluctuation comprising: initializing equipment; in a pre-calculation stage, introducing melt into a mold cavity at a constant rate, collecting pre-calculation parameters in each sampling period T, and obtaining a first injection work in the pre-calculation stage by using a first calculation formula; in a self-adaptation stage, introducing the melt into the mold cavity at a constant rate, collecting adaptive parameters in each sampling period T, and obtaining a second injection work in the self-adaptation stage by using a second calculation formula; calling the PVT characteristics of current processing raw materials to construct a PVT relation function, and obtaining an optimized V/P switching point by using a PVT weight control model; and according to the injection work at the pre-calculation stage and the injection work at the present stage, obtaining an optimized holding pressure according to an injection work adjustment model.

An injection molding system includes a step of determining a manufacturing condition including a combination of a first mold and a first injection molding machine, a step of confirming presence or absence of a first track record in production, in which a combination of the first mold and the first injection molding machine is used, by searching a production-track-record storage unit to, and a step of producing, in a case of the absence of the first track record in production, a corrected molding condition for injection molding by using the combination of the first injection molding machine and the first mold, based on first molding machine-specific information acquired in advance for the first injection molding machine, second molding machine-specific information acquired in advance for a second injection molding machine that is combined with the first mold and has a second track record in production, and the second track record in production acquired from the production-track-record storage unit. In the step, at least an amount of resin injected from the first injection molding machine into the first mold is corrected, and the produced corrected molding condition is inputted to the second injection molding machine.

The present disclosure discloses a method for on-line measurement of the polymer melt temperature, comprising: on-line measurement of ultrasonic sound velocity c of melt in an injection molding process, on-line measurement of melt pressure P in the injection molding process, and obtaining melt temperature T in the injection molding process by formula (1). The present disclosure also discloses an apparatus for on-line measurement of the polymer melt temperature. The method and the apparatus provided in the present disclosure may enable on-line and in-situ characterization of the melt density and further enable on-line quantitative measurement of the melt quality. Compared with infrared measurement methods, the method provided herein is significantly reduced in cost, which is of great significance to theoretical researches of crystallization process and shear heating.

An injection molding apparatus including a mold, an injection device and at least one sensor is provided. The mold has a mold cavity. The injection device is adapted to inject a material into the mold cavity such that the material is formed into a forming article. The at least one sensor is disposed on the mold and adapted to sense at least one of a temperature and a pressure in the mold cavity. The at least one sensor is located at an inner surface of the mold cavity and corresponds to a non-appearance surface of the forming article. In addition, an injection molding method is also provided.

A foaming process and a method for operation of the foaming process are provided. The method includes flowing a molten polymeric material into a mold from an upstream device, receiving the molten polymeric material in a cavity of the mold, and maintaining a repeatable, uniform pressure profile as the molten polymeric material is delivered into the mold.