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.

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.

There are provided a core unit manufacturing apparatus and a core unit manufacturing method including: a molding device that fills a resin into a space portion in a core body; a resin transfer unit that transfers a resin material to the molding device to supply the resin material thereto; and a core transfer unit that carries the core body in and out of a part between a pair of dies of the molding device. The resin transfer unit and the core transfer unit are arranged such that: the resin transfer unit supplies the resin to the molding device from one side position of side surfaces of the molding device; and the core transfer unit carries the core body in and out of the molding device from the other side position of the side surfaces of the molding device, the other side position being different from one side position.

There are provided a core unit manufacturing apparatus and a core unit manufacturing method including: a molding device that fills a resin into a space portion in a core body; a resin transfer unit that transfers a resin material to the molding device to supply the resin material thereto; and a core transfer unit that carries the core body in and out of a part between a pair of dies of the molding device. The resin transfer unit and the core transfer unit are arranged such that: the resin transfer unit supplies the resin to the molding device from one side position of side surfaces of the molding device; and the core transfer unit carries the core body in and out of the molding device from the other side position of the side surfaces of the molding device, the other side position being different from one side position.

In an injection molding machine of the present invention formed to have a plurality of injection apparatuses connected via a communication channel, a first injection apparatus among the plurality of injection apparatuses includes a display apparatus, a first control apparatus included in the first injection apparatus includes an operation screen input/output unit which obtains operation screen data from another injection apparatus and a rendering attribute converting unit which converts rendering attributes of rendering elements configuring an operation screen to be rendered based on the operation screen data. When an operation screen of the other injection apparatus is displayed on the display apparatus based on the operation screen data, the rendering attribute converting unit makes all or part of the rendering attributes of the rendering elements configuring the operation screen different from rendering attributes when an operation screen of the first injection apparatus is displayed. Thus, the operation screens of the plurality of the injection apparatuses are easily distinguishable.

In an injection molding machine of the present invention formed to have a plurality of injection apparatuses connected via a communication channel, a first injection apparatus among the plurality of injection apparatuses includes a display apparatus, a first control apparatus included in the first injection apparatus includes an operation screen input/output unit which obtains operation screen data from another injection apparatus and a rendering attribute converting unit which converts rendering attributes of rendering elements configuring an operation screen to be rendered based on the operation screen data. When an operation screen of the other injection apparatus is displayed on the display apparatus based on the operation screen data, the rendering attribute converting unit makes all or part of the rendering attributes of the rendering elements configuring the operation screen different from rendering attributes when an operation screen of the first injection apparatus is displayed. Thus, the operation screens of the plurality of the injection apparatuses are easily distinguishable.

Disclosed is a guide bushing for the guiding and sealing of a closing needle of a needle valve nozzle of an injection moulding apparatus, the guide bushing having a main part and a fastening element, wherein the main part has a through-opening for the closing needle, wherein the through-opening comprises at least one guiding portion, which encloses the closing needle with slight movement play, wherein the through-opening comprises at least two expansion portions, whose diameter in each case is larger than that of the at least one guiding portion. The guide bushing moreover comprises a fastening element, which is securable to the main part, wherein a seal element is arranged between the fastening element and the main part, bearing against the entire circumference of a closing needle inserted into the through-opening.

Disclosed is a guide bushing for the guiding and sealing of a closing needle of a needle valve nozzle of an injection moulding apparatus, the guide bushing having a main part and a fastening element, wherein the main part has a through-opening for the closing needle, wherein the through-opening comprises at least one guiding portion, which encloses the closing needle with slight movement play, wherein the through-opening comprises at least two expansion portions, whose diameter in each case is larger than that of the at least one guiding portion. The guide bushing moreover comprises a fastening element, which is securable to the main part, wherein a seal element is arranged between the fastening element and the main part, bearing against the entire circumference of a closing needle inserted into the through-opening.

A molding system capable of detecting an abnormality for each cavity when a plurality of molded articles is molded at a time by a mold having a plurality of cavities mounted on an injection molding machine is a molding system for detecting an abnormality of a cavity by inspecting a molded article molded by a mold having a plurality of cavities mounted on an injection molding machine. The molding system includes a molded article information acquiring unit for acquiring molded article information indicating a state of the molded article for each cavity over a plurality of molding cycles, and a cavity abnormality detecting unit for detecting an abnormal cavity by mutually comparing tendencies of the molded article information between cavities.

A molding system capable of detecting an abnormality for each cavity when a plurality of molded articles is molded at a time by a mold having a plurality of cavities mounted on an injection molding machine is a molding system for detecting an abnormality of a cavity by inspecting a molded article molded by a mold having a plurality of cavities mounted on an injection molding machine. The molding system includes a molded article information acquiring unit for acquiring molded article information indicating a state of the molded article for each cavity over a plurality of molding cycles, and a cavity abnormality detecting unit for detecting an abnormal cavity by mutually comparing tendencies of the molded article information between cavities.