The present invention provides piston production device and piston production method capable of surely holding friction-resistant ring regardless of presence or absence of decrease in accuracy of outside diameter of holding pin. Device has lower mold provided thereinside with cavity for forming piston and having opening, upper mold provided movably to open/close opening of cavity, and three holding pins rotatably supported by holding holes of upper mold and having top end portions protruding from lower surface of upper mold. Top end portions have flat holding surfaces formed by cutting tip end sides of top end portions in half from tip end edges along axial direction and stepped surfaces formed from upper ends of holding surfaces toward radial direction. By rotating holding pins in synchronization with each other in the same direction, friction-resistant ring is held by three points of holding surfaces.

An embodiment ejecting device for die casting for use in ejecting a molded product molded by a fixed die and a movable die, the ejecting device including an ejecting plate disposed on a movable holder on which the movable die is mounted to be movable forward and backward in a moving direction of the movable die, a plurality of main ejecting pins disposed on the ejecting plate in the moving direction of the movable die to penetrate through the movable die, and a plurality of sub-ejecting units disposed on the ejecting plate to penetrate through the movable die and disposed to eject the molded product in multiple directions within a set ejecting angle range based on an arrangement direction of the main ejecting pins.

The high-quality casting device for producing a thick aluminum part includes: a mold having a movable mold and a fixed mold coming into close contact with each other to form a cavity; a platen having a movable platen on which the movable mold is mounted and a fixed platen on which the fixed mold is mounted; an upper tie bar and a lower tie bar connected to the platen; a high-pressure squeeze platen connected to the upper tie bar and the lower tie bar; a squeeze pressurizer located on the high-pressure squeeze platen to pressurize a molten metal filled into the cavity; a sprue adapted to pour the molten metal into the cavity of the mold; a pouring ladle attached to the mold to pour the molten metal into the sprue; and a casting extractor located on one side of the mold to extract the casting solidified inside the cavity.

A pressure casting device includes: a chamber with an opening portion formed on one side and sealed on the other side; an outer mold having a filling space into which a molten metal is filled, and a casting space connected to the filling space such that the molten metal is supplied from the filling space into the casting space and filled in a shape of a casting; and a self-shielding mold table configured to fix the outer mold and including first and second sealing portions to seal the opening portion of the chamber and an inner side portion facing the opening portion, respectively, and an outer mold support portion contacting the outer mold to support the outer mold; a pneumatic pressure injector provided at one side portion of the chamber to supply pneumatic pressure into the chamber; and a tilting device to rotate the chamber.

An apparatus for molding process includes a mount including a base, a support on the base, first and second side columns, and a mounting member moveably on tops of the first and second columns; pneumatic first and second half molding assemblies for forming a mold; and first and second auxiliary devices cooperating with a die to insert the mold for molding. There are further provided second cooling devices, first and second lifting devices, first and second lowering devices, and a control device.

A method for molding a hardenable molding compound may comprise containing a hardenable molding compound in a cavity. The hardenable molding compound may be in a fluid state and the cavity may be delimited by a first mold part and at least one second mold part of a molding tool. After a defined period of time for heating the first mold part and the second mold part by the molding compound, the method may further comprise generating at least a first relative movement between the first mold part and the second mold part so that the cavity becomes smaller while forming one or more thin-walled regions. The one or more thin-walled regions having a material thickness of not more than 5 mm. The method may further comprise allowing the molding compound to harden.

A clutch device includes a pressure plate movable toward or away from a clutch center and rotatable with respect to the clutch center. The pressure plate includes a flange extending radially outward from an outer circumferential edge of a body, pressure-side fitting teeth projecting in a first direction from a front surface of the flange, holding input-side rotating plates and a portion of output-side rotating plates being arranged in a circumferential direction, a body-side recessed portion recessed in the first direction from a second direction-side surface of the body, and a flange-side recessed portion recessed in the first direction from a back surface of the flange. As seen in an axial direction of an output shaft, the flange-side recessed portion at least partially overlaps one of the pressure-side fitting teeth.