Abstract: An apparatus for driving a pair of gripper bars of a multi-stage press in a longitudinal direction of the press which includes a pair of driven levers disposed symmetrically to a longitudinal center plane of the press, which levers are engageable with a slide guide extending at right angles to the longitudinal direction of the press. At least one feed cross member is operatively connected to the pair of gripper bars and also to the slide guide associated with the pair of driven levers. Two toothings are provided which are disposed symmetrically to the longitudinal center plane and are conjointly reciprocatingly driven between two end positions. Each toothing meshes with a pinion mounted for rotation and fastened to the frame with the pinions having a rotational path between the two end positions of the toothing which amounts to 180.degree.. Each pinion is also rotationally fixed to one of the pair of driven levers.

Abstract: A workpiece transport device which includes at least one gripper tong arrangement driven in comformity with a work rhythm of a machine tool which is required to be charged and/or discharged. The gripper tong arrangement grips a marginal area of the workpiece, transports the workpiece, and deposits the workpiece at another machine tool or workpiece depository. An extensible and retractable support slide is provided for supporting the workpiece in a transport phase by being displaced beneath the workpiece in parallel to the gripper tong arrangement.

Abstract: A device for producing a bead on a circumference of a hollow cylinder seeks to minimize the risk of unwanted deformations of the hollow cylinder such as wrinkles or bulges which can result when an area of the hollow cylinder to be beaded is forced inward without support. In a preferred embodiment, the device of producing a bead on a hollow cylinder includes an internal tool and an external tool which can be adjusted in a controlled manner in the radial direction, the internal tool comprising a support mandrel and an inner ring which is adjacent to the supporting mandrel in the axial direction and is capable of being adjusted radially relative thereto, and the external tool includes an outer ring which surrounds the inner ring and a hold-down ring which is axially adjacent the outer ring and capable of being adjusted radially relative thereto.

Abstract: An arrangement for aligning and stacking laminations and for transporting formed stacks of laminations with the laminations being provided with a circular inner and/or outer circumference and having stamped patterns defining a plurality of stampings distributed about the circumference of the laminations at equal centering angles. A stack forming device is provided for receiving laminations fed individually thereto with the stack forming device including at least two stack forming elements mounted so as to be selectively separable. The stack forming elements are disposed one above the other in a longitudinal direction of the stack forming device so as to form upper and lower stack forming elements. The lower stack forming element selectively engages the upper stack forming element, with such element being maintained in a fixed position when the lower stack forming element is displaced to a lowered position.

Abstract: A speed controlling arrangement and method for a mechanical press. The press has a crankshaft revolution which can be subdivided in principle into a discharging and charging region and a working region with the speed of the mechanical press being controlled between a maximum admissible speed and a minimum possible speed. The speed of travel of the press ram is controlled so that the speed of the press ram during the press discharging and charging region permits a safe discharging and charging of the press. During the working region, the press ram travels at a maximum permissible speed such that a stoppage of the press between the discharging and charging region and the working region is unnecessary.

Abstract: A drive arrangement for a mechanically driven press with the press including at least one drive shaft mounted in a press frame and at least one eccentric or crank arranged on the drive shaft with a clutch being operatively connected to the drive shaft for permitting a press stroke operation upon engagement of the clutch. At least two hydraulic brakes are provided for braking the press between press strokes and a two system hydraulic circuit is provided for controlling the operation of the clutch and the at least two brakes.

Abstract: A press arrangement which includes a press table, a punch and an adjusting arrangement for selectively adjusting the distance between the press table and punch. A pressure space is provided in the punch which selectively communicates with a pressure medium supply so as to load and relieve the pressure space. A piston is floatingly disposed in the pressure space and cooperates with an element of the adjusting arrangement so as to create a constantly-acting or permanently-acting tension on the adjusting arrangement when the pressure space is filled with a pressure medium.

Abstract: A workpiece turning device is provided for an automated press train of the type where workpieces are turned after being withdrawn from a working chamber of a press and are then subsequently fed to a further press. The turning device includes separately movable gripper arms for clamping a workpiece therebetween, as well as a rotary unit for rotating the gripper arms as a unit about an axis parallel to the plane of clamping movement. In preferred embodiments the gripper arms are actuated by piston-cylinder units connected to a pressure source by a rotatable connection.

Abstract: A control system for controlling operating steps of a press and/or transfer mechanism therefor in dependence upon the position of a drive shaft of a drive mechanism of the press. The system includes a coded pulse generator supplying coded pulses indicative of the position of the drive shaft to a decoder from which decoded pulses are supplied to a control pulse distributor to an amplifying unit and appropriate regulating member for regulation of the operating step. A monitoring unit is also provided for monitoring the operation of the control system.

Abstract: A dividing apparatus for dividing, cutting, or severing a continuously running strip material with the apparatus including an articulated drive for effecting a stroke movement of a cutting unit. The articulated drive is constructed as a quadrangular linkage including a driven crank and a rocker lever pivotally connected to the driven crank through a coupling member. The rocker lever includes an extension portion extending beyond a pivotal connection of the coupling member with the rocker lever. A secondary drive lever is provided with a first end of a link member being pivotally connected with the secondary drive lever and a second end of the link member being pivotally connected with a free end of the extension portion of the rocker lever. A transmission link element is provided for moving the cutting unit with the transmission link element being adjustably connected with the secondary drive lever.

Abstract: A control arrangement for a dividing apparatus for dividing or cutting continuously fed strip stock of variable thickness. The dividing apparatus includes a drive arrangement for driving a cutting unit in a horizontal and vertical direction with an arrangement being provided for vertically adjusting the height of the cutting unit. A control arrangement is provided which includes a measuring device arranged in the dividing apparatus at a position upstream of the cutting unit, as viewed in the feed direction of the strip stock, with the measuring device dividing an output signal indicative of the measured thickness of the strip stock, which output signal is directed to control elements so as to correlate the speed of the drive arrangement and adjust the height of the cutting unit between minimum and maximum values in correspondence with the measure thickness of the strip stock.

Abstract: An alignment and stacking arrangement for stampings manufactured in a continuous stamping operation by a stamping machine having a punch and associated punch matrix. At least one stacking channel is arranged in the punch matrix for receiving the stampings with an intermediate stack forming device being arranged at the stamping machine at a position below and independent of the punch matrix. The intermediate stack forming device may include at least one locking pawl for reducing the clearance of the stacking channel and/or a mandrel arranged in the stacking channel which is selectively engaged by a holding element during the formation of the intermediate stack. A stacking mandrel or stacking shaft is associated with the mandrel and is displaceable so as to permit a stack of stampings of a predetermined height to be carried away from the stamping machine by a conveyor arrangement.

Abstract: An alignment and stacking arrangement for stampings manufactured in a continuous stamping operation by a stamping machine having a punch and associated punch matrix. At least one stacking channel is arranged in the punch matrix for receiving the stampings with an intermediate stack forming device being associated with stacking channel. The intermediate stack forming device may include at least one locking pawl for reducing the clearance of the stacking channel and/or a mandrel arranged in the stacking channel which is selectively engaged by a holding element during the formation of the intermediate stack. A stacking mandrel or stacking shaft is associated with the mandrel and is displaceable so as to permit a stack of stampings of a predetermined height to be carried away from the stamping machine by a conveyor arrangement.

Abstract: An arrangement for aligning and stacking laminations for electrical equipment and for transporting formed stacks of laminations with the laminations being fed individually in the same position to a stack former which maintains the relative positions of the laminations. The laminations include a circular inner or outer circumference and a plurality of stampings distributed about the surface of the laminations at equal centering angles. The stack former is provided with an appropriate circular circumference and a guide which can be introduced into at least one stamping. The stack former is rotatably mounted relative to its longitudinal axis and is provided with a rotary drive which operates in a stepwise manner with the rotary steps of the drive being equal to the central angle of the stampings of the stamping pattern or a whole number multiple thereof.

Abstract: Apparatus for the unstacking and transportation of blanks into a subsequently arranged operating chamber of a processing machine, wherein the blanks are transferred from a stack of blanks, by hoisting devices, especially suction bridges, includes a suspended conveyor which conveys the blanks by way of a double-blank control device to a centering station. From the centering station, the blanks, centered in their position, are transferrable into the operating chamber, optionally by way of an intermediate station. At least two stacks of blanks are disposed in series in the conveying direction of the blanks on at least two elevator carts movable at right angles to the conveying direction. Each elevator cart is associated with a separately operable suspended conveyor with associated hoisting units. A further, continuously driven suspended conveyor is provided downstream of the double blank control device which conveyor spans a double-blank depositing unit and terminates over the zone of the centering station.

Abstract: A control system for controlling operating steps of a press including a coded pulse generator for providing a coded pulse output in dependence upon the position of a drive shaft of a press drive and a signal generator responsive to the stroke rate of the press for providing an output signal proportional to the stroke rate of the press. A summing unit receives the coded pulse output from the coded pulse generator and the output signal of the signal generator for providing a corrected coded pulse output. A decoding unit is provided for decoding the corrected coded pulse output of the summing unit and for supplying a decoded pulse output to a pulse distributor which provides an output on at least one of a plurality of output paths in accordance with the decoded output of the decoding unit. At least one regulating member for controlling an operating step is coupled to the pulse distributor for receiving an output therefrom in accordance with the position of the drive shaft and the stroke rate of the press.

Abstract: Apparatus for stacking and intermittently discharging stacks of sheet material for electrical machines and the like. A plurality of mandrels are provided which are successively movable into a position for forming stacks of sheets continually supplied by a horizontal conveyor. A turntable is provided for moving the mandrels into and out of respective sheet receiving positions. In order to accommodate intermediate stacking of the sheets while mandrels are being exchanged, a mandrel tip is provided which is positionable in alignment with the mandrels when in a sheet receiving position. During normal stacking operations, the mandrel tip is supported at the respective mandrel. During exchange of mandrels clamping jaws hold the mandrel tip in position and a slide member is moved into a position so as to hold an intermediate stack of sheets on the mandrel tip.

Abstract: A press line having a transfer system for transferring workpieces from a processing station of one press to a processing station of a subsequent press. The transfer system includes a track extending over the entire interspace between the two successive presses and a single transfer slide mounted for horizontal movement along the track. At least one pair of grippers pointing in opposite directions is mounted on the slide and a single storage station is provided between the two successive presses with a drive being provided which controls the movement of the slide in accordance with the travel path thereof.

Abstract: Apparatus for processing flat strip material including cutting apparatus for cutting the material and to strip portions and stacking apparatus having air cushion means for stacking the strip portions one on top of the other. An accelerating anchoring roller, having vacuum or magnet devices therein for attracting the sheet portions thereto are provided for the exclusive transfer of the strip portions from the position were cut in the cutting apparatus in positions at the inlet of the stacking apparatus where the air cushion takes over the conveyance and stacking of the strip portions.

Abstract: Apparatus for the conveyance of components punched out from a strip of material with the formation of a punched grid out of the working area of a press includes a feeding mechanism for conveying the strip of material into the working area of the press. At least one controllable ejector is arranged in an upper die for ejecting the punched-out components during the return stroke of the upper die onto the strip of material itself which is the conveyor. Lugs are punched into a remaining portion of the strip of material to be processed, behind the punched-out component, these lugs serving to retain the punched-out and dropped-off components on the strip of material.