Plural ejector pins are made to project before a molten resin containing reinforcing fibers is injected into an inside of a cavity through pin point gates in a web forming portion in the inside of the cavity and at positions outside the pin point gates in a radial direction. The ejector pins are retracted from the inside of the cavity after a flow of the molten resin containing reinforcing fibers injected into the inside of the cavity through the pin point gates impinges on the ejector pins and is divided and before a tooth portion forming portion in the inside of the cavity is filled with the molten resin containing reinforcing fibers. Accordingly, weld lines which extend along the radial direction are formed at positions outside the ejector pins in the radial direction, and the molten resin is filled in portions formed after the ejector pins are retracted.

The utility model provides an electromagnetic stylus having a tip, a first magnetic core, a second magnetic core and a cartridge. The tip includes a nib arranged at an end portion thereof. The first magnetic core has a first through hole. The second magnetic core is arranged on a distal end of the first magnetic core from the nib, having a second through hole. An inner diameter of the second through hole is less than an inner diameter of the first through hole, the tip sequentially penetrates through the first through hole and the second through hole. A step structure is arranged on a proximal end of the second magnetic core to the nib. A spacer is arranged on an inner wall of the cartridge, the first magnetic core and the second magnetic core are at least partially received in the cartridge and respectively positioned on two sides of the spacer, the step structure abuts against the spacer, a thickness of the step structure is less than a thickness of the spacer along a lengthwise direction of the tip.

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.

A plastic housing for remote controls, the housing comprising a first housing part and a second housing part, wherein the first housing part has a joining surface facing the second housing part, and the second housing part has a joining surface facing the first housing part, wherein the two housing parts are assembled such that the joining surfaces rest against each other, and wherein the joining surfaces are in the form of mitred surfaces.

An injection molding apparatus includes a fixed die having a first gate opening and a second gate opening formed therein, a movable die configured to be clampable to the fixed die, a first injection unit that injects a first molding material into a cavity defined by the fixed die and the movable die via the first gate opening, and a second injection unit that injects a second molding material into the cavity via the second gate opening.

[Problems] The objective of present invention is to provide the mold, injection molding system and method capable of limiting the outflow of pressurized fluid injected into a mold cavity. [Solution] A mold device and a molding device comprising: a shaft body 27 provided at least on one mold among a first mold 205 and a second mold 206 that form a molding space 200, the shaft body being used for pushing out a molded article formed from a resin injected into the molding space 200; a ring-shaped elastic member for supporting the shaft body 27 in which an opening formed along the circumferential direction is oriented toward the said molding space; and an injection portion provided on at least one mold among the first mold 205 and the second mold 206, the injection portion being used for injecting a pressurized fluid into the molding space 200.

An injection molding system includes: an injection molding machine where a shaping mold is installed; a material supply device supplying a material to the injection molding machine; a temperature controller controlling a temperature of the shaping mold; a dryer drying a material stored in the material supply device; a controller controlling the injection molding machine; and a casing. The injection molding machine, the material supply device, the temperature controller, the dryer, and the controller are provided inside the casing. The casing has a caster and is configured to be movable.

A mold device where a pressurized fluid is injected into a clearance between a resin injected into a cavity and a cavity wall surface, the mold device including: a shaft body provided on at least one of a first mold and a second mold, the first mold and the second mold forming a molding space, the shaft body ejecting a molded article molded from the resin injected into the molding space; a ring-shaped elastic member for supporting and sealing the shaft body, an opening of a groove formed in the ring-shaped elastic member along a circumferential direction of the ring-shaped elastic member being oriented toward the molding space, a load being applied on the ring-shaped elastic member to improve adhesion to the shaft body; and an injection portion provided on at least one of the first mold and the second mold for injecting the pressurized fluid into the molding space.

Provided is a cooling module to which a microporous cooling structure is applied, and a method of locally and conformally cooling a mold using the same. The cooling module to which a microporous cooling structure is applied which is installed at each high temperature region inside a mold core and allows supplied cooling fluid to flow thereinto to perform local and conformal cooling on a mold may include a body part inserted into the mold core, a microporous cooling structure which is inserted into an upper portion of the body part and in which micro unit cells are periodically and repeatedly formed to form a plurality of connected hollow portions, and a cooling channel including a conduit configured to pass the cooling fluid through the microporous cooling structure.

[Problem] The present invention relates to a manufacturing method for obtaining a molded article having an expanded layer in the molded article, wherein an expanding agent and device used to manufacture a resin having expansion properties, and a means for increasing expansion ratio are provided.

[Solution] In the present invention, an expanding agent placed in a heating cylinder of a molding machine is configured as a liquid, the volume of the expanding agent is controlled, and the expanding agent is injected into a molten resin in the heating cylinder of the molding machine. The volume of the injected expanding agent can thereby be accurately measured each time. When a low-boiling liquid such as water, an alcohol, or an ether is used as the injected expanding agent, all of the liquid is vaporized by the temperature of the heating cylinder of the molding machine, and no residue thereof is therefore left in the molded article. When sodium bicarbonate water is used as the injected expanding agent, solvent water vaporizes and water vapor also becomes expandable gas, which is less expensive than using sodium bicarbonate as the expanding agent for a master batch using the resin that is to be molded.