In a press machine vertically moving a ram by turning a threaded member, the ram has a bearing holder that holds a bearing whose outer ring is solidly engaged with the bearing holder and whose inner ring is solidly fitted to a lower end part of the threaded member. A fine clearance is formed between a lower face of the threaded member and a bottom face of the bearing holder so that the threaded member and bearing holder are allowed to rotate relative to each other. The fine clearance is set so that, when load is applied to the ram to cause a relative slight movement in a vertical direction between the inner and outer rings of the bearing, the lower face of the threaded member and the bottom face of the bearing holder come into contact with each other.

There is provided a press machine capable of simplifying a slide drive mechanism. The press machine comprises: a slide supported so as to be reciprocally movable; a crankshaft arranged along a longitudinal direction of the slide and having a plurality of eccentric parts; a drive unit configured to rotate the crankshaft; a plurality of yokes and each provided to each of the eccentric parts of the crankshaft and configured to reciprocate, due to rotation of the crankshaft, along a moving direction of the slide; and a plurality of points each connects each of the yokes to the slide, wherein at least one of the plurality of yokes is connected to the slide via some of the plurality of points arranged along a direction perpendicular to an axial direction of the crankshaft.

A die assembly for use in a stamping press is provided. The die assembly includes a first die plate, a first curved die stiffener, and a first die shoe. The first die plate may be configured to form at least a portion of material into a desired configuration. The first curved die stiffener may be affixed to the first die plate on a first curved side of the first curved die stiffener. The first die shoe may be affixed to a second side of the first curved die stiffener. The first die shoe may be operatively configured to be mounted on a first press base.

A bailing apparatus may include a multi-component bolster assemblies that may ease installation and removal, reduce wear and tear and maintenance, and/or improve baling efficiency by reducing material waste, imperfections, and/or contamination. The bolster assemblies may include a plurality of coupling portions that engage a hydraulic rod and may enable the bolster assembly to self-center within a press chamber during normal baling operations. The bolster assemblies also may include an island portion that may be attached to the coupling portions and to a bolster cap, and the latter may be attached using retainer bolts having substantially planar heads that may define lips that run about frustums. The bolts may substantially planar head may reduce irregularities in the bale and the lips may prevent material seepage into the bolster assemblies.

The present invention relates to a press-forming tool having a top die and a bottom die, which can be moved toward one another, forming a forming cavity between the top die and the bottom die when the press-forming tool is closed, wherein a die clamping plate is arranged on a press ram and/or on a press table, wherein a top die or bottom die, which can be moved relative to the die clamping plate, is supported on said plate while incorporating at least one resilient adjusting element.

A press machine includes a drive mechanism that moves at least one of an upper tool and a lower tool and machines a workpiece placed between the upper and lower tools. The drive mechanism includes a first drive source that rotates a screw shaft serving as an advance-retract component and a second drive source that rotates a nut connected to the screw shaft. A structure including the upper tool and lower tools includes a casing supporting the screw shaft such that the screw shaft is rotatable, a movable member that is movably formed in the casing and can contact an end of the screw shaft or retract therefrom, and a drive unit that moves the movable member.

A press for waste has an actuator (42) that moves a ram (40) in a chamber (30). The actuator and the ram are connected by a fastening system (100). The fastening system allows the ram to be displaced in a direction perpendicular to the length and direction of travel of the actuator. In this way, as inner surfaces of the chamber wear the ram may adjust to the worn surfaces without applying large forces perpendicular to the length of the actuator. When the actuator moves forward, it pushes directly against the back of the ram. When the actuator moves backwards, it pulls a pin (102) that pushes on an inner surface (108) of the ram.

A compacting apparatus (1) for compacting receptacles has at least one advancing device (2) for conveying a receptacle (G) in a conveying direction (E) to an exit opening (6) of the compacting apparatus (1). The at least one advancing device (2) is configured to act on the receptacle (G) for compacting during conveying. A flap device (5) has an adjustable retaining flap (50) that closes the exit opening (6) in a closed position so that a receptacle (G) conveyed against the retaining flap (50) by the at least one advancing device (2) is retained on the retaining flap (50). The retaining flap (50) is adjustable out of the closed position to release the exit opening (6).

Methods for forming improved bales may include using baling equipment with multi-component bolster assemblies that may ease installation and removal, reduce wear and tear and maintenance, and/or improve efficiency by reducing material waste, imperfections, and/or contamination. The bolster assemblies may include a plurality of coupling portions that engage a hydraulic rod and may enable the bolster assembly to self-center within a press chamber during normal baling operations. The bolster assemblies also may include an island portion that may be attached to the coupling portions and to a bolster cap, and the latter may be attached using retainer bolts having substantially planar heads that may define lips that run about frustums. The bolts may substantially planar head may reduce irregularities in the bale and the lips may prevent material seepage into the bolster assemblies.

A path-controlled press, with at least one drive shaft having a driver that is eccentric relative to a shaft axis, and a sliding block, wherein the sliding block is driven by the driver to perform a forcibly actuated movement During the execution of a pressure stroke, the sliding block is guided on at least one sliding surface on the pressure side in relation to a pressure-side surface of a slide guide. The sliding block has a sliding surface on the pulling side opposite the sliding surface on the pressure side, which is guided on a surface of the slide guide on the pulling side. The sliding surface on the pressure side of the sliding block has a concave or convex curvature. The sliding surface on the pulling side of the sliding block has another respective concave or convex curvature.