An injection molding apparatus includes: a mold that includes a fixed mold and a movable mold facing the fixed mold, and that is formed with a cavity partitioned by the fixed mold and the movable mold and a runner communicating with the cavity; a mold clamping unit configured to move the movable mold with respect to the fixed mold; an injection unit configured to inject a molding material into the cavity through the runner; a cutting mechanism that is provided at the mold and that includes a cutter projecting to the runner; a drive unit that is provided on the mold and that is configured to drive the cutting mechanism; and a control unit configured to control the injection unit, the mold clamping unit, and the drive unit. The control unit controls the injection unit to inject the molding material into the cavity, and then controls the drive unit to cause the cutter to project to the runner, thereby cutting the molding material hardened in the runner.

An injection molding apparatus includes: a mold that includes a fixed mold and a movable mold facing the fixed mold, and that is formed with a cavity partitioned by the fixed mold and the movable mold and a runner communicating with the cavity; a mold clamping unit configured to move the movable mold with respect to the fixed mold; an injection unit configured to inject a molding material into the cavity through the runner; a cutting mechanism that is provided at the mold and that includes a cutter projecting to the runner; a drive unit that is provided on the mold and that is configured to drive the cutting mechanism; and a control unit configured to control the injection unit, the mold clamping unit, and the drive unit. The control unit controls the injection unit to inject the molding material into the cavity, and then controls the drive unit to cause the cutter to project to the runner, thereby cutting the molding material hardened in the runner.

An injection mold capable of planing and cutting gates in an inside thereof and a planing and cutting method are provided. The injection mold includes a blade fixed block arranged between a moving mold and a fixed mold. Blades arranged on the blade fixed block and configured for cutting off gate condensed-material. The mold includes ejectors for ejecting out the gate condensed material and the blade fixed block. Runners formed between the blade fixed block and the fixed mold. Cut holes for communicating runners and gates are formed in blades. Ejector holes for penetrating the ejectors are formed in portions of the blade fixed block which correspond to bottoms of runners. The blade fixed block moves relative to the moving mold in a mold opening direction. The moving mold is provided with a limiting mechanism for limiting the blade fixed block after injection molding parts are separated from a cavity.

An injection mold capable of planing and cutting gates in an inside thereof and a planing and cutting method are provided. The injection mold includes a blade fixed block arranged between a moving mold and a fixed mold. Blades arranged on the blade fixed block and configured for cutting off gate condensed-material. The mold includes ejectors for ejecting out the gate condensed material and the blade fixed block. Runners formed between the blade fixed block and the fixed mold. Cut holes for communicating runners and gates are formed in blades. Ejector holes for penetrating the ejectors are formed in portions of the blade fixed block which correspond to bottoms of runners. The blade fixed block moves relative to the moving mold in a mold opening direction. The moving mold is provided with a limiting mechanism for limiting the blade fixed block after injection molding parts are separated from a cavity.

A method for producing a well or a well strip made of plastic, as used in the pharmaceutical industry in microtiter systems is presented. The wells typically have undercuts and the well strips are connected to each other by connecting ribs. In order to produce a well with a larger undercut height or a well strip with higher connecting ribs, as the case may be, the method provides that the plastic, which is initially still liquid, is pressed through a portion of a runner which is arranged in a slider and out of the slider into a cavity of an injection mold.

A molding mold in which gates are provided at outlets of runners and connected to cavity portions and a molding material is fed from inlets of the runners to fill the cavity portions to mold molded products includes gate cutters attached so as to be able to advance/retract, and the gate cutters are attached such that advancing/retracting directions thereof intersect axes connecting the inlets and the outlets of the runners.

A molding mold in which gates are provided at outlets of runners and connected to cavity portions and a molding material is fed from inlets of the runners to fill the cavity portions to mold molded products includes gate cutters attached so as to be able to advance/retract, and the gate cutters are attached such that advancing/retracting directions thereof intersect axes connecting the inlets and the outlets of the runners.

Packages, systems, and methods of the present disclosure are generally directed to the use of side gating in injection molding to form packaging for contact lenses. As compared to gating along a top surface of a contact lens package, the use of a side gate in injection molding to form a package for contact lenses may significantly reduce the time required to cool plastic in the injection mold, thus offering potential to reduce the overall cycle time for the injection molding process and increase fabrication throughput of the package.

A method for producing a part consisting of a polymer material involves injection-moulding said polymer material in a mould comprising a main section for forming the part and an additional section for forming an add-on for the part. The additional section is arranged between the injection point and the main section. The part and the add-on are separated by cutting.

The purpose of the present invention is to make it possible to shorten the time required for a burr removal step and make it difficult for the burrs to detach from a sheet member in a step for removing the burrs together with the sheet member. For removal, by making the burrs to adhere to a pliable sheet member such as paper or nonwoven fabric that has been incorporated beforehand in the molding die and stripping the sheet member from the molding die, the burrs are removed together with the sheet member. The present invention is characterized in that in order to make it difficult for the burrs to detach from the sheet member during the stripping, a radiused shape with an arc-shaped cross-section is formed by the molding die on the areas surrounding the sections where the burrs adhere to the sheet member.