Abstract: A press molding die structure having a paired press lower die and press upper die that are relatively movable to each other in which a work transferred into a portion between the press lower die and the press upper die is press-molded thereby to form a molded work. A concave portion is formed to a molding surface of the press lower die, and a suction cup of a vacuum stabilizer is provided to the concave portion formed to the molding surface of the press lower die, wherein the suction cup elastically sucks and retains the work at least at a time when the press molding dies are opened, thereby stabilizing a posture of the work.

Abstract: A press molding die structure having a paired press lower die and press upper die that are relatively movable to each other in which a work transferred into a portion between the press lower die and the press upper die is press-molded thereby to form a molded work. A concave portion is formed to a molding surface of the press lower die, and a suction cup of a vacuum stabilizer is provided to the concave portion formed to the molding surface of the press lower die, wherein the suction cup elastically sucks and retains the work at least at a time when the press molding dies are opened, thereby stabilizing a posture of the work.

Abstract: In a linear actuator including a casing, an output shaft passing through the casing and being mounted slidably in a direction along the axis thereof, a solenoid coil disposed within the casing in coaxial relation to the output shaft, a magnet disposed in such a manner that the magnetic flux thereof is linked with windings of the coil, the output shaft mechanically connected to one of the magnet and the coil to form a movable part, and a spring adapted to urge the output shaft in one direction along the axis thereof, and a spacer made of high permeability material and interposed between the casing and either the coil or the magnet, whichever is fixed on the casing to form a stationary part.

Abstract: In a linear actuator provided with a first projection on a movable part which is linearly driven with the electromagnetic force, so as to engage with one end of a compressing coil spring, and/or a second projection on a stationary part as opposed to the movable part, so as to engage with the other end of the coil spring, and a cup-like washer interposed between said at least one of the projections and said coil spring, a washer is so adapted that said at least one of projections is allowed to collide with the inner bottom part thereof. The linear actuator may comprise a resin film of small friction coefficient interposed between the movable part and the stationary part destined to contact with each other, a thermosensitive resistor which has an opposite resistance-temperature coefficient of the coil and is connected in series to the coil, and/or a means for detecting the relative position of the movable part with respect to the stationary part.