An apparatus and a method are provided for adjusting the stroke length of a reciprocating member such that the stroke length can be infinitely varied between a minimum and a maximum stroke length. A pair of crankshafts are each connected to an eccentric and configured to operate with a phase offset such that the stroke length can be varied by adjusting the phase offset.

A clamshell die cutting press (10) that can transition between an opening of three inches and 0.937 and anywhere in between without the requirement of filler plates. This is accomplished by attaching the connecting rod or arm (20) that extends between the fixed platen (14) and the movable platen (16) to the fixed platen through an eccentric bevel gear (26). The bevel gear (26) is driven by an electric motor (28) which allows the adjustment to be made with a push of a button, and by moving the bridge rocker plates (34 and 36) and bridge cam stands using linear slides and servo motors.

A clamshell die cutting press (10) that can transition between an opening of three inches and 0.937 and anywhere in between without the requirement of filler plates. This is accomplished by attaching the connecting rod or arm (20) that extends between the fixed platen (14) and the movable platen (16) to the fixed platen through an eccentric bevel gear (26). The bevel gear (26) is driven by an electric motor (28) which allows the adjustment to be made with a push of a button, and by moving the bridge rocker plates (34 and 36) and bridge cam stands using linear slides and servo motors.

Provided is a servo press machine having a configuration that allows miniaturization of the servo press machine, and a motor using the same. A servo press machine includes a servomotor, a crankshaft rotated by driving of the servomotor, a connecting rod connected to an eccentric portion of the crankshaft, and a slide connected to the connecting rod, wherein two connecting rods are connected to the crankshaft, the servomotor is an axial gap motor, a rotor of the axial gap motor is assembled with the crankshaft between the two connecting rods, and a stator of the axial gap motor is fixed to a crown in which the crankshaft is housed.

A forging machine with one or more hammers, comprising, for each hammer, an eccentric shaft (1) adapted to rotate about a first axis; a connecting rod (2), adapted to be actuated by the eccentric shaft operating as crank; a guiding frame (10); wherein the hammer is adapted to perform an alternating working movement within said guiding frame along a second axis perpendicular to the first axis; wherein the hammer comprises a hydraulic cylinder (8) provided with a hollow body (5), to which a forging member (15) is externally fixed, and with a piston (3) at least partially inserted within said hollow body and removably coupled to the connecting rod; wherein a first hydraulic chamber (6), arranged between piston and hollow body, allows to move the hollow body away from and/or towards said piston; wherein uncoupling means are provided for uncoupling the piston from the connecting rod.

The present invention relates to a press suitable for forming hot blanks into components. The press of this invention includes a mechanical press, which may be servo-driven, a hydraulically controlled bolster and a stationary bed. The mechanical press is adapted for vertical reciprocal movement towards the stationary bed for hot forming the blanks placed in dies on the stationary bed. The hydraulically controlled bolster is adapted for quenching the hot formed blank placed on the die. The present invention relates also to a method of hot forming or hot stamping blanks using the press of the present invention.

The invention relates to a pressing tool and a method for pressing a single- or multi-layer product in a web-processing operation by means of a pressing tool (1) comprising a frame (3), an upper tool module (4) with an upper pressing plate (40) and a lower tool module (5) with a lower pressing plate (50), the upper tool module (4) and the lower tool module (5) each being adjustably mounted on the frame in the transport direction (I) of the web-processing operation, wherein, after the pressing tool (1) has been closed, the upper tool module (4) and the lower tool module (5) are driven separately relative to the frame (3) in a synchronous manner in the transport direction (I) during an operating period.

A press machine includes: a ram, a shaft, and three or more ram driving cams, for the one ram, configured to push down the ram toward a bottom dead center, the plurality of ram driving cams being integrally rotatable with the common shaft. Both end portions of the shaft are rotatably supported by a pair of rotation support portions fitted to the both end portions between which all of the plurality of ram driving cams are disposed, and an intermediate portion of the shaft disposed between the ram driving cams is rotatably supported by a support groove opened downward. The plurality of ram driving cams includes at least two lifting and lowering cams configured to apply both a pushing down force and a pushing up force to the ram, and at least one lowering cam configured to apply only the pushing down force to the ram.

A press device includes a slide configured to hold a first die, a holding portion configured to hold a second die, a reciprocating mechanism that causes the slide to reciprocate in a stroke direction in which the first die and the second die move closer to or away from each other, and a pressurizing mechanism that holds the second die while pressurizing the second die toward the first die with a stroke shorter than that of the reciprocating mechanism in a state where the first die and the second die are moved close to each other by the reciprocating mechanism.

A press device includes a slide configured to hold a first die, a holding portion configured to hold a second die, a reciprocating mechanism that causes the slide to reciprocate in a stroke direction in which the first die and the second die move closer to or away from each other, and a pressurizing mechanism that holds the second die while pressurizing the second die toward the first die with a stroke shorter than that of the reciprocating mechanism in a state where the first die and the second die are moved close to each other by the reciprocating mechanism.