Abstract: A manufacturing process, such as that used for ultrasonic welding, employs a self-leveling fixture (20) including a base (12) and an operation stage (14) that are separated by leveling devices (16) and 18). The leveling devices include a centrally located spherical plane bearing (16) and one or more spring members (18) disposed about the periphery of the operation stage. In this way, the operation stage can react in response to pressure applied thereto complying to the applied pressure, thus providing a realistic self-leveling feature. After the pressure is removed, the return to a normal position via the spring action of spring (18).

Abstract: A BGA mould assembly which can facilitate high degree of control over the clamping force on BGA substrates of varying thickness. An Independent drive is provided for each of the dual in-line cavity bars which clamp the BGA substrates. The drive mechanism is a wedge press which includes a servo motor, and a linear-conversion mechanism coupled to the servo motor to convert the rotation motion of the motor to a linear movement. An input wedge is coupled to the linear-conversion mechanism such that the input wedge moves correspondingly with the linear movement of the linear conversion mechanism. An output wedge is coupled to the cavity bar and positioned such that a horizontal movement by the input wedge causes the output wedge to move downwards. A roller cage is provided at the top and bottom of the input wedge to reduce friction.

Abstract: An arrangement of guide elements of the pressure ram of waste material presses for compacting foils, cardboard and similar used packaging material of upright construction, i.e., with vertically acting pressure ram and guidance for support of the pressure ram at the walls of the press shaft in the four corner areas of the cross section of the shaft. The guide elements contacting the rear wall and the side walls of the press shaft are constructed as slide blocks and the guide elements located in the front portion of the press at the inner sides of the front doors of the pressing shaft and filling shaft areas are constructed as roller bodies.

Abstract: A device for parallel guiding a reciprocating ram of a hydraulic press has a ram of a rectangular contour and a drive unit with hydraulic cylinders for reciprocating the ram. The ram has first and second opposite lateral walls.

Abstract: Method for compacting refuse or waste material in an enclosed baler-compactor, applying controlled angularity of the platen for even compacting and improved distribution of the compacted material in the container of a container-lift assembly. Tying the compacted material into high density bales or bundles for efficient handling and disposal.

Abstract: A method for controlling the drive of a hydraulic press and an associated device for carrying out the method are proposed, the piston/cylinder unit belonging to a press ram being driven via several hydraulic devices connected in series. Depending on the operating phase of the press, the hydraulic devices are here used as required either as hydraulic motors or hydraulic pumps, which effect a delivery of pressure medium into the respective cylinder chamber.

Abstract: The push rods (16, 17) are connected via ball-and-socket joints (42-45) to the ram (3). The sockets (44, 45) are located within the push rods (16, 17) and the balls (42, 43) are located above the ram (3) and mounted to same. Thus, in case of off center loadings of the ram (3) no bending moments are transmitted to the push rods (16, 17). The entire bottom side of the ram (3) is available for the receipt of connecting members for the mounting of a tool to the ram.

Abstract: A method and equipment for bending a work to the extent of a target bending angle, including a first process of bending to bend a work with a ram driven by a two-shaft system having a pair of right and left drive mechanisms to the extent of the quantity of motion for each shaft corresponding to the target bending angle, a measurement process to measure the bending angles at both ends of the work bent in the first process of bending, a correction process to correct the quantity of motion for each shaft according to each error between the target bending angle and the respective bending angles at both ends of the work measured in the measurement process, and a second process of bending to bend the work with the ram driven by the two-shaft system in which each shaft is actuated by each drive mechanism to the extent of the quantity of motion for each shaft corrected by the correction process, all of the above processes being performed in series.

Abstract: A device for compressing a specimen which includes a fixed support assembly supporting the specimen and a mobile piston assembly which compresses the specimen. The support assembly and the piston assemblies have respective first and second planar faces in contact with and supporting the specimen. The specimen is compressed between the first and second planar faces. Each of the supported piston assembly include a swivel joint and a part of the mobile piston assembly has the first planar face slidably engaging a part of the fixed assembly having the second planar face.

Abstract: The press brake comprises a pressure ram member which is driven by two operating cylinders engaging the pressure ram member in the region of its two lateral ends. The pressure ram member has an upper and a lower portion which abut against each other in a central contact area and which are separated from each other by two gaps each running from the central contact area to the lateral ends, whereby the gap width continuously increases. Under load, the lower portion of the pressure ram member and the stationary ram member are deflected in the same sense. The degree of free deflection of the lower portion of the pressure ram member is limited by an adjustably mounted wedge member located in the gaps between the upper and lower portions of the pressure ram member. With this measure, the parallelism of the deflection lines is always maintained, even under extreme load situations.

Abstract: A continuous press for pressing glued press charges is provided. The press includes first and second generally parallel press platens, a driver for driving the press platens through a working stretch at a predetermined rate of travel, and a system for maintaining a predetermined spacing between the press platens to compress and unify the press charges disposed between the first and second press platens. The system is designed to travel through the working stretch of the press, with the press platens, at the predetermined rate of travel.

Abstract: The press brake of the invention comprises a cross bar-like pressure ram member. The two lateral ends thereof are connected each to the piston rod of a pressure bar operating cylinder. For transmitting the power exerted by the operating cylinder, there is provided an articulated joint assembly with two articulated joints which are arranged in series as seen in the power transmission direction. Thereby, a complete absence of clearance in the pressure ram driving elements can be realized and higher tolerances as far as the parallelism of the two operating cylinders can be accepted. Furthermore, an operational tilting of the pressure ram member with relatively high tilting angle is possible.

Abstract: A method of closing a mold and a press therefore, whereby a first mold part is moved towards a second mold part by a first relatively large displacement via a mechanical non-fluid drive. The mold parts are then pressed against one another by a fluid system including a pneumatically driven hydraulic system to provide relative high mold pressures. Drive and follower pins are selectively coupled to the hydraulic system by a carousel for selectively coupling a mold part to the hydraulic system during the pressing portion of the cycle. The method and press are particularly suitable for encapsulating electrical components.

Abstract: The invention concerns a process for regulating the parallelism of two beams of a cutting press designed for converting sheet or weblike matter into a package. The press comprises a frame made of a lower crossbar and an upper crossbar, connected to one another by means of lateral posts. An upper beam is fitted on the upper crossbar. A lower movable beam is raised and lowered with each operating cycle by means of a drive system supported by the lower crossbar by means of bearings. The bearings can be shifted vertically when the drive system is situated in a lower dead center position in such a way as to regulate the parallelism of the lower beam with regard to the upper beam. When the press accomplishes its operating cycle, a deviation e from parallelism is measured when the drive system is situated in an upper dead center position.

Abstract: An apparatus and method for applying equal forces to a workpiece or a plurality of work pieces having differing heights above an opposing surface and particularly adapted to use in a furnace for sintering of multi-layer ceramic (MLC) stacks. A combination of beams for dividing of a single applied force in a plurality of stages with spherical bearing surfaces for maintaining centering of transmitted forces and precisely consistent force division is employed. In one embodiment, equalizing beams are used to provide an unequal division of applied force, the smaller forces resulting from the unequal division being recombined to result in a force equal to the larger of the unequally divided forces.

Abstract: A device for compacting used tires has a rigid base member, a pair of columns rising from the base member, a top beam joining the uppermost extremities of the columns, and a movable engagement member adapted to slide upon the columns. A shaft vertically penetrates the top beam and is pivotally attached to the engagement member. In use, tires are stacked upon the base member, and the shaft, which is essentially a piston component emergent from a pressurized fluid chamber, is caused to force the engagement member downwardly. At the downwardmost point of travel of the engagement member, the tires are tied to form a bale. Retaining assemblies adjustably positioned upon the columns permit tires to be accumulated in multiple pressings prior to baling.

Abstract: A sizing press has a pair of opposed rotatably supported pressing tools for reducing the width of a flat metal slab. Piston cylinder assemblies rotatably oscillate the pressing tools relative to each other. Each pressing tool has first and second slab-contacting surfaces which extend in different planes. The invented method of this invention includes the steps of moving the pressing tools toward each other against the sides of a metal workpiece and reducing the width of an initial workpiece length. Thereafter, rotating the pressing tools to further reduce the width of only a portion of the initial workpiece length and to reduce the width of an adjacent workpiece length.

Abstract: A system for die casting of concrete goods such as block stones comprises a cellular casting mould having a plurality of cells and a device for supplying concrete for filling the cells. A dolly including a common base member with protruding pistion portions having load plates of a shape corresponding to that of the cells, is used for compressing the concrete in the cells. Each of the piston portions includes a resilient compressible material arranged between the load plates and the common base member for obtaining uniform density and strength in the goods in the respective cells.

Abstract: A die clamping apparatus includes a fixed die plate for holding a fixed die, a movable die plate for holding a movable die, and structure for actuating the movable die plate to advance or retreat with respect to the fixed die plate. Tie bars for performing a die clamping operation can be fixedly coupled to the fixed die plate after the movable die plate has approached to the fixed die plate and the fixed die and the movable die have closed form a mold. A movable die plate main body and guides for guiding advance/retreat movements and on which the movable die plate is mounted are separately formed and are pin-coupled so as to be mutually rotatable.

Abstract: A device for resin sealing semiconductor devices includes a pair of chase blocks having cavities for holding semiconductor devices, a press machine for pressing the chase blocks against each other through a pair of press surfaces, a plurality of support members for holding the chase blocks over the respective press surfaces of the press machine and undergoing elastic compressive deformation during the press operation of the press machine, and a plastic injector for injecting plastic into the cavities in the chase blocks.

Abstract: A connecting system which includes a slack connecting device between a blade and a support and an elastic member for taking up slack between the blade and the support in a direction of application of operating forces. A face of the support which reacts to the bending force component in a direction parallel to a plane of a sheet metal panel and perpendicular to a bending line is defined by a pair of superimposed rods which slide in the direction of the bending line in their respective seats with differentiated sections.

Abstract: A prestressed hydraulic press includes a pressure generator for selectively prestressing the hydraulic press such that the press is under substantially constant stress during all phase operations of the hydraulic press.

Abstract: A hydraulic press for compacting materials with a large platen area has a platen support comprising of four hydraulic cylinders, one at each corner of a rectangular or square shaped platen. The cylinders are supplied with near equal fluid flows from commercially available hydraulic flow dividers. When an off-centered platen loading is encountered, the cylinders will respond with a higher restraining force from the cylinders nearest the load with relatively small bending moments transferred to the cylinder rods. The resulting platen structural load resembles a beam supported with pinned connections. The resulting press capacity can be significantly higher than that achievable with guided type platen supports of similar costs where the bending moment is restrained by the stiffness of the guides.

Abstract: A composite board press is provided with a single set of platen supporting rods for supporting and loosely guiding a plurality of platens, the heights of which are dually adjustable. The invention also includes a method of laminating a composite to form a printed circuit board by applying heat and pressure in which the pressure is applied at points exterior to the area of the composite and in which the press is repeatedly opened and closed in the presence of an evacuated environment when the resin in the composite is liquid.

Abstract: A press has upper and lower platens which can be moved towards and away from one another. Four hydraulic leveling cylinders are mounted in a vertical orientation on the lower platen for purposes of platen parallelism control. In preferred form, each cylinder has a piston rod which engages an associated post on the upper platen as the platens approach one another. The piston rod and associated piston are formed with a longitudinal bore open at the upper piston rod end, and a rigid shaft is mounted in the bore with a lower end extending through the bottom of the cylinder housing. A coil spring in the interior of the piston rod urges the rigid shaft upwardly until a collar formed on the shaft engages a stop surface, the upper shaft end then being flush with the upper piston rod end. The associated post is fixed to the upper press platen in-line with the piston rod and has an internal passage in which is located a stud-like shaft that engages the rigid shaft mounted in the piston rod.

Abstract: A sintering press for comprising a stack of foils is formed of a lower die, an upper die opposing the lower die and a furnance surrounding the dies. At least one of the two dies is supported at its end face remote from the other die by a spherical bearing surface so that this die can adjust itself by tilting so that the center lines of the two dies are no longer in line with each other. As a result, a uniform pressure distribution is obtained on the stack of foils.

Abstract: An apparatus for applying a modifying ingredient to a mass of open-celled polyurethane foam includes the application of an excess of a liquid solution or dispersion of the modifying ingredient to the mass of foam. A fixed frame mounts a plurality of spaced, generally parallel lower backing rollers. A movable frame is mounted above the fixed frame and carries a plurality of spaced, generally parallel pressure rollers for movement toward and away from the backing rollers. A first adjustment device is provided for lowering the movable frame to move the pressure rollers toward the backing rollers, with the mass sandwiched therebetween. A plurality of second adjustment devices are spaced at locations about the rollers for adjusting the pressure between the backing rollers and the pressure rollers uniformly along the rollers both in a direction transversely to and in the direction of movement of the mass through the rollers.

Abstract: A press apparatus for planar members is provided with a first transfer table for transferring a first planar member to a press position, a second transfer table for transferring a second planar member to the press position substantially simultaneously with the first transfer table, a device for aligning the first and second planar members, a device for effecting the parallel feeding of the first and second planar members, and a device for pressing the first and second planar members with a predetermined pressure.

Abstract: Hydraulic press including a frame with platens, at least one of which is carried or formed by a pressure plate structure adapted for transferring pressing force to an object between the platens, which press is adapted such that the pressure plate structure is substantially carried solely by horizontally adjustable supports mounted between the defining outer edges of such plate structure, such supports being positionally adjustable such that the surface of the corresponding platen assumes a predetermined shape during the pressing operation. The press suitably includes a mechanical mechanism for effecting the horizontal displacement in order to gain the desired positional adjustment of the supports.

Abstract: A deflection compensating cylinder and auxiliary cross-member assembly, for use with a press brake of the type having a bed, a ram, and a pair of main cylinders actuating the ram. The assembly causes the die-supporting edges of the bed and ram to remain substantially parallel under load. A pair of auxiliary cross-members are located to each side of the bed, extending the majority of the length thereof. The cross-members are affixed to the bed by a pair of pins, each located near an end of the cross-members and extending therethrough and through the bed. The cross-members have corresponding, coextensive, longitudinal slots formed therein and located centrally thereof. The bed contains a similar slot, slightly offset in a vertical direction with respect to the cross-member slots. A deflection compensating cylinder is mounted in the cross-member and bed slots with the cylinder contacting one of the bed and cross-members and its piston contacting the other of the bed and cross-members.

Abstract: A method and apparatus for controlling the stroke of a press in which the movements of two portions of a movable platen of the press are continuously sensed during a stroke. A signal is generated whose magnitude at any time during a stroke is dependent on the sum of the distances moved by the two portions of the movable platen during the stroke. The signal is compared with a preselected value which is selected in accordance with the length of the stroke required and the stroke is terminated when the magnitude of the signal equals the preselected value.

Abstract: In a machine of the kind in which an operative member under the actuation of driving means is reciprocatable relative to a guide member in order to exert forces in a predetermined direction on a workpiece, toothed and elongate roller bodies having their axes of rotation extending perpendicularly to said direction are interposed between the guide member and the operative member in order to prevent the latter from tilting. The teeth of each roller body mesh with the teeth of racks extending in said direction of movement of the operative member and being provided on both the guide member and the operative member in a manner to cause each roller body to transmit under torsional strain balancing forces in its axial direction. The roller bodies also have cylindrical surface portions being coaxial with and having the same diameter as the pitch circles of their teeth, said cylindrical portions being in rolling contact with rollways provided on both the operative member and the guide member.

Abstract: The present invention relates to a mechanical press, and in particular to a guiding arrangement for the reciprocating slide of such a press. The press comprises a crown and bed and a plurality of vertical uprights connecting the crown and bed. A plurality of guideposts are rigidly connected to the crown and depend downwardly therefrom, the guideposts being parallel to each other and substantially perpendicular to the plane of the bed. The guideposts each have free ends which are unsupported and terminate short of the bed of the press so that the parallelism of the guidepins is determined solely by their connection to the crown. In order to counteract the non-vertical forces exerted on the slide by the connection arms, which tend to cause the slide to tilt about a horizontal axis perpendicular to the axis of the crankshaft, bearings are mounted between the connection assembly and the crown.

Abstract: A baling machine having a cabinet provided with a central baling chamber and a closet on opposite sides of the baling chamber. A pressure platen operates in the baling chamber and fluid-pressure operated means located in one closet imparts up and down movement to the platen by connection to one side thereof. Two sets of cables and sheaves are arranged in respective closets and connect opposite sides of the platen for equalizing the platen pressure in each direction of movement. The cables can be adjusted not only to take up slack but also to level the platen.

Abstract: A compressive chamber of a baling device is open at both ends. Associated with one end is a movable closure member and a ram projects into the chamber from the opposite end. Drive mechanism directly connects the ram and the closure member so that in one direction of drive the closure member is forced into and held in closed position while the ram travels toward it and, in the opposite direction of drive, the ram and closure member are forced apart to unseat the closure member and move it to open position.

Abstract: An overall system of transporting and handling seed cotton comprising apparatus for and process steps of (a) compressing seed cotton after gathering thereof, (b) storage, (c) transport and (c) decompression and dispersion prior to ginning, is designed around (1) a transport pallet and (2) a pallet and module load discharge and manipulation apparatus adapted to manipulate the loaded pallet, separate the load and the pallet and treat the load.

Abstract: An automatic control system for use with a known type of vehicle crushing press that is presently equipped with manual or semi-automatic controls. The press includes a base and a pressure head that can be moved vertically toward the base to crush a vehicle positioned thereon. Movement of the pressure head is effected by an independently operable hydraulic cylinder at each end of the head, and the control system of the invention is adapted to be integrated with the hydraulic system for the cylinders. The control system provides for automatic skewing of the pressure head during the crushing operation, automatic termination of the crushing operation and, if desired, automatic repetition of the operation after a predetermined time lapse.

Abstract: A baler for baling refuse and having a pressing platen and a platen guide. The platen guide includes spaced sets of rollers bearing inwardly against opposed sides of the baler, and brackets rigidly attached to the platen and extending externally of the baler for mounting the rollers in engagement with the pressing box sides.