Abstract: An arrangement for coupling and decoupling gripper rail partial sections of a transfer press in which the gripper rail partial sections are to be clamped together flange-like. The clamping bolt is adapted to be actuated by an adjusting drive in the displacement direction and in a rotary movement. A slide member displaceable in the end portion of the gripper rail partial section includes slide guidances which extend at an inclination to the displacement direction and in which pressure members are displaceably supported. During the displacement of the clamping bolt, the slide member is moved along and the pressure members are displaced into the separating gap between the gripper rail partial sections under abutment at stop members in the end portion of the gripper rail partial section to be coupled. The clamping anchor is adapted to be fixed at a ball socket by rotation and by retraction.

Abstract: An installation for feeding sheet-metal blanks to a first working stage of a multi-stage press, in which the blanks fed individually by way of a suspension conveyor into the area of an intermediate deposit station are to be transferred to active gripping devices attached at the transfer rails. For avoiding standstill periods of the transfer rails during the closing of the active gripping devices, the blank is lifted during the lifting of the transfer rail synchronously therewith. A carriage adapted to be lifted and lowered serves for that purpose which is synchronized by way of a crank drive at least in the lifting phase of the transfer rails with the lifting-lowering drive of the transfer rails.

Abstract: A sliding table, used for the exchange of tool or die sets of a press is moved into and out of the press on rails. The driving motion is caused by an adjusting mechanism in the sliding table. An underfloor power containing channel extends parallel to the moving direction of the sliding table and is used for containing at least one power supply line taken along by the sliding table. The underfloor power containing channel is closed in an upward direction by a covering, consisting of individual cover members, flexibly connected with one another and with its own drive which causes pre-stressing of the cover members prior to movement of the sliding table.

Abstract: For reducing the refitting time of high-speed presses as a consequence of the adaptation of the distances of stacking spindle and support members to the dimensions of the cutting tool to be interchanged and of the blank, the stacking spindle and the support members are arranged on interchanging rails adapted to be displaced out of the press table. Upon reaching the required height of the stack, the spindle tip adapted to be separated from the stacking spindle is held by a retaining device consisting of adjusting means and slide member so that the stack can be lowered to the discharge conveyor plane.

Abstract: Workpieces are stored in idling stages of transfer presses. The support elements (14) which are to be interchanged with the work tool change are to be rotated for bridging a larger idling stage area when brought into the idling stage in the transport direction of the workpieces. Toothed racks (7) which are movable in the direction of the support elements (14) brought-in with the sliding table into the transfer press are attached for that purpose at a gripping and holding mechanism. The toothed racks (7) are adapted to be connected with a traverse (13) carrying the support elements, whereby the support elements (14) are supported at the traverse (13) by way of mounting means (15), to which a rotary movement is adapted to be imparted and which are operatively connected with a rotary drive.

Abstract: A drawing apparatus, by means of which the different individual functions such as control of the sheet metal holder pressure, control of the sheet metal holder upward movement, control of the ejector movement and of the end position abutment are adjustable, respectively, controllable independently of one another.

Abstract: An arrangement that is independent of a press for physically simulating the actual movements of transfer rails of a multi-stage press and for reducing periods of stoppage of multi-stage presses during the tool change and the connected setting up of tools, of gripping devices and of the movements of the transfer rails. The arrangement includes a program control for the sequences of movements employing values optimally adjusted at the arrangement, for the adjusting measurements, the acceleration and speed values of the transfer rails, for the tool automation and the active gripper operation which are scanned using program-technology and are processed into a cycle of movements that can be transmitted to the multi-stage press.

Abstract: For avoiding collisions between the grippers (5) adapted to be moved out of the idling stage area and the grippers (4) disposed fixedly at interchangeable gripper rail partial sections (1) and work tool parts, the grippers (5) which are adapted to be moved out of the idling stage area, are raised into an upright position. The grippers (5) and the rotary adjusting drive (10) for the uprighting are adapted to be moved out of the idling stage area on a carriage (18-gripper mounting support) by way of an adjusting means (13) at the exchangeable gripper rail partial section.

Abstract: A pressure control installation for presses in which the individual pressure consuming stations are to be actuated with different pressures. During the setting up of the presses, it is necessary to fetch and display visible for the operator values adjusted during the optimization and interim value. The pressure control units, whose number depends on the number of differing high pressures, are connected by way of an interface component to a stored programmable control SPS. The read-out of the data in the pressure control unit takes place by way of a read-out key whereby a routine is initiated it the SPS during the actuation of the read-out key for the guidance of the operator.

Abstract: A protective circuit arrangement of a motor control for the starting and operation of a motor of a press with a power stage, a current-regulating element and a rotational speed regulating element. Comparator stages are connected to the inputs of the regulating elements for forming the guide magnitudes from the actual current value and the desired current value as well as from the actual rotational speed value and the desired rotational speed value. For suppressing the disconnect signal during the starting phase of the motor, the circuit additionally includes a rotational speed comparator stage, a desired current value memory and a current comparator stage. The desired current value, which stored after the starting phase in the desired current value memory, is compared with the current value in the current comparator stage to produce a motor current interrupt signal in case of an overload current that might lead to a press damage.

Abstract: An intermediate storage in a press in which intermediate storages are to be provided within the area of idling stages thereof. The intermediate storages include storage templates matched to the shape of the bottom side of the workpieces which are adapted to be liftable in the vertical direction by way of lifting means. The lifting means may thereby act on the storage templates in the sense of a lifting movement, for example, by way of intermediate members displaceable by a motor-driven spindle, which act on the storage templates in the sense of a lifting movement by way of counter-abutment surfaces disposed at the ends of the storage templates.

Abstract: An arrangement for ejecting formed parts out of the matrix of a deformation press, in which for avoiding jamming of the segment of an ejection arrangement, which is displaceably and fixedly supported at the guidance in the shape of a circular arc of the driving lever, the mutually contacting surfaces are made according to different radial dimensions whereby the radial dimension of the counterabutment surface of the segment is slightly smaller than the radial dimension of the abutment surface of the driving lever. Clamping elements constructed as pressure cylinders serve for fixing the segment at the driving lever in a position adjustable by an adjusting mechanism; the clamping elements are installed in the segment spaced from one another in the direction of the longitudinal dimension of the circular arcuate guidance.

Abstract: For the conveying of work pieces from one treatment step to the next and for release after the treatment, gripping devices are arranged at gripper rails that can be lifted and lowered wherein the lowest and the highest position of the gripper rails can be adjusted via a pulley that can be placed against cam parts carried along by the slide of the press, via a step-up gear and a lever system. The change of the gripping devices is to be carried out together with the tool change. For this purpose, the gripper rails are led into the lowest position, which position can be adjusted via a regulating means independently from the position of the slide.

Abstract: A one-armed ejection lever of a coining press is adapted to be controlled in one end section directly by the coining ram by way of a connecting rod and in the other end section by an operating piston-cylinder unit. The center portion of the ejection lever is placed by way of a pressure bolt against the projecting end of an ejection rod. The abutment pressure is produced by the operating piston-cylinder unit whereby the ejection coining die is able to yield by way of the ejection rod, for example, in case two pieces to be coined are in the coining tool in order to avoid damages. For multiple coining, it is additionally possible to act upon the operating piston cylinder unit in the opposite direction and to effect therewith an intentional lifting-off of the pressure bolt from the ejection rod.

Abstract: A punch which includes a notching tool and a separating which are adapted to punch at least one notch and a separating gap in each effective working stroke of the punch. A separating tool is formed by at least two independently disposed separating punches which are spaced from each other by a distance which is equal to or greater than a width of a web formed between two punched notches. Likewise, the notching tool may be in the form of two independent spaced notching punches.

Abstract: With workpieces to be drawn, especially large-area body parts or sinks, the possibilities of tearing the walls, respectively, undulated surface structure exists within the area of the corner formation. The present invention is therefore predicated on the concept to match the support pressure to the shaping of the workpiece in the different abutment areas thereof. A number of pressure cylinders fixedly installed in the press table serve for that purpose, whose piston rods are adapted to be to displaced in the vertical direction by way of a pressure plate acting in unison on all piston rods. The piston rods acting on the other end of the support are lowerable under the ram movement against the controllable pressure differing in the pressure chambers by way of valves.

Abstract: A control arrangement for a clutch and/or brake of a press, with the control arrangement including at least one of a clutch cylinder piston unit and a brake cylinder piston unit which opposes braking forces until a desired rotational speed is reached. The cylinder-piston units may be operationally controlled by at least one valve before the desired rotational speed is reached. The control arrangement is driven by at least two different pressures, with one of the pressures being at least approximately equal to a maximum clutch pressure or at least approximately equal to a pressure release, and the other pressure being a partial pressure which lies above a minimum response pressure of the clutch or below a counter pressure which triggers a minimal response pressure of the brake.

Abstract: Device for the semiautomatic or fully automatic electric longitudinal-seam mash resistance welding of can bodies from overlapping, cut-to-size sheet-metal blanks rolled into sidewalls (20), with a guide arranged in front of the welding site for determining the lap width of the sidewall edges (21, 22) including resilient guide elements (32-34), whereby the sidewall edges (21, 22), when traveling toward the welding site, can be pressed against the bases (29, 30) of the groove of a Z-rail (13), and with a calibrating rim (40) arranged in the zone of the welding site, with such a construction of the guide means that the lap width of the sidewall edges (21, 22) at the welding site is at most six times the thickness of the can wall, and with wire electrodes (11) that can be pulled off a reel and are guided over electrode rollers (7, 9), these electrodes being fashioned as flat-wire electrodes (11) having a width exceeding the lap width of the sidewall edges (21, 22) at the welding site.

Abstract: A press unit having gripper rails to be exchanged at the same time as the tools, wherein in hollow spaces of the ends of the gripper rails, means are inserted for the locking of the form-fitting or toothed connection of gripper rails on the side of the press and gripper rails on the side of the tool that are to be connected with one another for the transfer of workpieces. The device comprises a control element, a pressing rod that can be acted upon by the control element, and a locking member connected to said pressing rod, with said locking member being slidable in a preferably press side end of the gripper rails and a mating piece for receiving the locking member during the form-locking or toothed connection of the ends of the gripper rails and being slidable in an end at the side of the tool.

Abstract: An electrical energy source with a static inverter and a welding transformer (12) for a resistance welding machine comprises a first static frequency converter (10) made up of semiconductor elements, the alternating output voltage of which has a frequency and pulse shape which differ from the frequency and pulse shape of the supply voltage fed to the inverter. In this connection, the pulse shape, the amplitude, and the pulse to space ratio are to be variable within wide limits. This is attained by at least one second frequency converter (11) connected in parallel to the first frequency converter (10), wherein the alternating output voltage of the second frequency converter (11) is adapted to be added in phase synchronism to the alternating output voltage of the first frequency converter (10) in the primary circuit of the welding transformer (12).