Abstract: A drive apparatus includes a movable member, at least one linear electrical actuator for generating a first force, and at least one linear hydraulic actuator for generating a second force. The at least one linear electrical actuator and the at least one linear hydraulic actuator are arranged such that the first force and the second force act in parallel on the movable member in order to result in a combined force.

Abstract: There is provided a press machine which can apply a large compression force to a mold as well as impart smooth vibration only in a rectilinear advancing direction to the mold, and thereby can improve the press-formability. A main slide and a sub-slide constitute a slide and at the same time a cylinder-piston mechanism. During press-forming, a compression force is transmitted to the sub-slide (an upper mold) through hydraulic pressure applied interlockingly with driving of the main slide, and the sub-slide is vibrated with the hydraulic pressure being periodically changed. Favorable press-forming can be performed even under relatively difficult press-forming conditions, by controlling the vibration such that a vibration frequency of the sub-slide (the upper mold) becomes 9 Hz or higher but 33.3 Hz or lower and a vibration amplitude of the sub-slide becomes 0.05 mm or larger but 0.5 mm or smaller.

Abstract: The invention relates to an apparatus for actuating of processing machines like metal forming machines and method, control and application of an apparatus for actuating said metal forming machines. The processing machine is driven by at least two rams with pressurized fluid, like water, whereas the rams are actuated by variable pumps with different fluid under pressure, e.g. hydraulic liquid.

Abstract: A sealer for bonding a cover foil to a support foil has upper and lower tools having confronting faces between which the foils move in a transport direction, a drive for pressing one of the tools vertically toward the other tool and thereby compressing the foils together between the faces, an intermediate plate between the drive means and the one tool formed with an array of pressurizable chambers. These chambers can be selectively pressurized.

Abstract: A rod pressure holding instruction section (67) controls a servo motor (37) to rotate a two-way pump (29) in a counter direction, and to supply hydraulic oil with pressure, which does not exceed pressure applied by an own weight of a ram (5U), to a two-way pump-side piping (49), increasing pressure. A difference between pressure in a rod-side cylinder chamber-side piping (43) of a speed switching valve (47) and pressure in a two-way pump-side piping (49) of the speed switching valve (47) is decreased, thereby decreasing an impact generated when switching the speed switching valve (47) and stopping the ram (5U) at a predetermined position.

Abstract: A low friction machine for manufacturing corrugated board is described. The machine effectively extends the life expectancy of critical machine components such as the feet used in pressure applicators as well as a conveyor belt by reducing friction. The machine includes a foot operative for applying pressure to the substrate. The foot includes a conduit having a first end and a second end. An actuator attached to the foot and moves the foot between a raised position and a lowered position. The lowered position is proximate the substrate. An air supply connected to the first end of the conduit and supplies air to the foot. A check valve coupled to the second end of the conduit and regulates airflow in the foot. The check valve is opened when the foot is in the lowered position and closed when the foot is in the raised position.

Abstract: A press has a fixed platen, a movable platen displaceable toward and away from the fixed platen, a plurality of low-pressure cylinders braced against the movable platen and pressurizable to move it toward the fixed platen, and a plurality of medium-pressure cylinders braced against the movable platen and pressurizable to move it toward the fixed platen. A low-pressure accumulator holding a body of hydraulic fluid and a head of nitrogen and a medium-pressure accumulator holding a body of hydraulic fluid and a head of nitrogen are connected via respective conduits with the low- and medium-pressure cylinders. a nitrogen supply connects the accumulators above the respective fluid bodies together in a closed system. A controller feeds the fluid therefrom to the respective cylinders.

Abstract: A baling machine includes a gathering chamber and a baling chamber. The gathering chamber includes a charging inlet through which material to be baled is delivered into the gathering chamber. The baling chamber communicates with the gathering chamber to allow compressed material to be forced from the gathering chamber into the baling chamber against the end wall. The baling chamber has a discharge outlet at one side for ejection of compressed material from the baling chamber. A gathering ram is reciprocal within the gathering chamber. The gathering ram includes a ram head movable between a retracted position and an advanced position to compress material in the gathering chamber and to drive compressed material into the baling chamber. An ejection ram is reciprocal within the baling chamber. The ejection ram includes a main ram head and an auxiliary ram head adjacent to each other.

Abstract: An improved top die raising and lowering guide mechanism for punching, pressing, and shearing machines having three hydraulic cylinder sets installed in a triangular configuration and, furthermore, three piston rod sets conjoined to an attachment mount to which is mounted a top die that is thereby guided during ascent and descent to execute punching, pressing, and shearing operations. The innovation of the present invention is that the top and bottom ends of the triangularly arranged three hydraulic cylinder sets are interconnected such that when a hydraulic system conveys hydraulic fluid to and from the top and bottom ends, the piston rods are simultaneously raised or lowered.