A method and apparatus for injection molding of plastic material into a cavity of a mold by means of at least one injector whose opening and closing occurs through an electronic control unit and wherein an undesired opening of the mold caused by any overpressure of the plastic material injected into the cavity of the mold is detected by means of transducers and corrected by means of the electronic control unit. The transducers are arranged outside the cavity of the mold.

In an injection molding system, a compression ratio of an image acquired by a molded article image acquisition means is changed based on a physical quantity related to injection molding and stored in a storage means. Thus, an image of a molded article is compressed and stored according to the compression ratio obtained based on the physical quantity.

An abnormality detection device for detecting an abnormality of a movable part provided in an injection molding machine includes: a through hole formed in the movable part or in an adjacent member arranged adjacent to the movable part; and a microphone installed inside the through hole to collect sound generated by the movement of the movable part.

The present disclosure relates to machines and methods for reaction injection molding. In particular, the present disclosure provides small format reaction injection molding machines having exchangeable molds and reactant material tanks, as well as molds configured for use therein and associated componentry.

A state determination apparatus for determining a state related to an abnormality of an injection molding machine based on an operation state of the injection molding machine includes a machine learning apparatus for learning the state related to the abnormality of the injection molding machine. The machine learning apparatus observes, as a state variable that represents a current state of an environment, injection data that indicates the operation state of the injection molding machine, acquires label data that indicates the state related to the abnormality of the injection molding machine, and performs learning by associating the observed state variable with the acquired label data.

An apparatus and method for eliminating mold lines when molding a part having ferromagnetic pigments is provided. A mold assembly having a mold with a cavity and valve gates is formed. Pucks are fitted at the gates to collect residual cold plastic. The calculation of a specific sequence and timing of the opening of the valve gates is determined based on a calculation of the total number of valve gates needed to fill a part while maintaining acceptable injection molding pressure. Once calculated, the gates are positioned around the mold cavity to balance flow length ratio. A primary gate is chosen for initial injection. The time for the material to flow from the first to the second gate is established. The second gate is opened after the flow front reaches the second gate. This pattern continues until all valve gates are opened.

The present disclosure relates to machines and methods for reaction injection molding. In particular, the present disclosure provides small format reaction injection molding machines having exchangeable molds and reactant material tanks, as well as molds configured for use therein and associated componentry.

The present disclosure relates to machines and methods for reaction injection molding. In particular, the present disclosure provides small format reaction injection molding machines having exchangeable molds and reactant material tanks, as well as molds configured for use therein and associated componentry.

In an injection molding system, a compression ratio of an image acquired by a molded article image acquisition means is changed based on a physical quantity related to injection molding and stored in a storage means. Thus, an image of a molded article is compressed and stored according to the compression ratio obtained based on the physical quantity.

A device for ascertaining the corrosiveness of a plastic melt, including a housing having a cavity to be filled with plastic melt; a first electrode made of a first material and a second electrode made of a second material, the first electrode and the second electrode each having a contact surface toward the cavity, the standard potential of the first material being higher than that of the second material, and the first electrode and second electrode additionally being connectable to each other via a measuring element for determining an electric current and/or an electric voltage between the contact surfaces.