An inspection method for an injection molding device includes: a first step of acquiring a first detection value from a sensor using a test mold having the sensor, the sensor measuring a temperature or pressure of a molten material injected from a first injection molding device into a cavity section demarcated by a fixed mold and a moving mold; a second step of injecting a molten material from a second injection molding device into the cavity section and acquiring a second detection value from the sensor; and a third step of performing an inspection using the first detection value and the second detection value.

An injection molding machine includes: a cylinder that holds a molding material to be injected into a mold; a plasticizing member provided in the cylinder so as to be movable and rotatable; a temperature measurer that measures a temperature of the cylinder or of the mold; and a period setting unit configured to set a cold start prevention period, which is a period for restricting the injection of the molding material into the mold, based on the temperature measured by the temperature measurer until a temperature of the molding material or the temperature of the mold rises. The period setting unit stores temperature-time data in which the temperature measured by the temperature measurer is associated with time, and adjusts the cold start prevention period based on an actual temperature of the stored temperature-time data.

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, whereupon a cure profile is commenced.

A system includes a cavity, an injection nozzle configured to inject material into the cavity, and a plurality of sensors at sensor locations. Each of the plurality of sensors is configured to measure parameters at one of the sensor locations. The system lacks a strain gauge. The system further includes a controller configured to control a flow rate of the injection of material into the cavity. The controller is configured to receive the measured parameters and compare the received information to predetermined curves. The controller is configured to control the flow rate when the measured parameters deviate from the predetermined curves.

A diagnosis method for identification or localization of errors in tempering devices for tempering of systems includes providing tempering devices each comprising one or more first sensors and one or more components for securing an operation of the systems with the tempering device, and one or more second sensors for measuring a state of the tempering device or ambient conditions around the tempering device, determining the tempering device to be checked with a diagnosis procedure, decoupling the tempering device from the system, connecting the tempering device to a defined consumer, and conducting the diagnosis procedure for the tempering device by using a diagnosis program, where the diagnosis program checks the components and the first and second sensors of the tempering device in a pre-determined sequence stored in the diagnosis program until the error in the tempering device is identified or localized.

An injection molding hot runner system adapted for leak detection during injection molding includes a manifold and a housing surrounding the manifold, wherein the manifold and the housing are spaced apart defining one or more pockets, the manifold comprises at least one junction point establishing a connection to a component attached to the manifold, wherein at the at least one junction point a sensor is located in the pocket, wherein the sensor is configured to indicate a leak when getting in contact with the molten plastic due to a leak at the junction point.

A method or system for industrial process optimization, including sensing data about an industrial process cycle that operates according to a set of process setpoints; determining a target performance for the process cycle based on the sensed data; selecting process set-points from a hypothesis space for a future industrial process cycle based on the target performance, and updating the hypothesis space.

A plasticizing device includes a drive motor, a rotor that is rotated by the drive motor and has a groove formed face with a groove formed therein, a barrel that is opposed to the groove formed face and has a communication hole, a heating portion that heats a material in a pellet form supplied between the groove and the barrel, and a control unit that controls the drive motor and the heating portion so as to plasticize the material supplied between the groove and the barrel and cause the material to flow out from the communication hole. The heating portion has a first heating portion and a second heating portion disposed closer to the communication hole than the first heating portion, and the barrel has a first region and a second region that is closer to the communication hole than the first region. The control unit individually controls the first heating portion and the second heating portion so that a temperature of the second region is higher than a temperature of the first region.

A sensor installed into a mold including a cable insertion member having a fixing portion with a fitting recess is provided. The sensor includes an optical fiber a part of which is bendable, and a fiber holder having a fiber insertion portion through which the optical fiber is inserted and a to-be-fixed portion extending from the fiber insertion portion. Further, the to-be-fixed portion is fixed to the fixing portion while being fitted to the fitting recess.

A method of manufacturing an optical component having micro-structures is described. The method detects a crystallization temperature within a crystallization temperature interval for fully filling the molding material into a mold cavity to rapidly produce the optical element having a micro-structure with a large area.