Patents Assigned to Hatebur Umformmaschinen AG
  • Patent number: 6471035
    Abstract: A multi-stage forming machine with a final forming station for dividing combined parts into in each case two product parts (21, 22) has two product-part discharge devices (3, 4). Assigned to the two product-part discharge devices (3, 4) there is in each case a transfer device (6) for transferring a product part (21, 22) from the final forming station to the product-part discharge device (3, 4). The one transfer device comprises transfer tongs with an upper gripper with two gripping jaws (521, 522) and a lower gripper with one gripping jaw (531). The other transfer device (6) comprises a slideway (61) for receiving a product part (22) from the final forming station and also a kick lever (62) arranged such that it can swivel for pushing a product part (22) located on the slideway (61) to the product-part discharge device (4).
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: October 29, 2002
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Daniel Ruchti, Ulrich Fluri, Heinz Dettwiler
  • Patent number: 6286350
    Abstract: A hot-forming machine for the hot-pressing of workpieces comprises a die (5), an associated extendable and retractable ejector (7) and a forwardly and backwardly movable press ram (1). The ejector (7) is connected to a control piston (8) arranged displaceably in a pressure chamber (28). Liquid can flow out of the pressure chamber (28) via a liquid outlet bore (24) and a liquid discharge line (23). By means of a throttle (25) arranged in the liquid discharge line (23) the outflow of liquid and therefore the repulsion of the extended ejector (7) by the forwardly moving press ram (1) are delayed in such a way that a workpiece (4) arranged between ejector (7) and press ram (1) is pre-upset and descaled outside the die (5).
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: September 11, 2001
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Raymond Schönenberger, Andreas Matt, Michael Suter
  • Patent number: 5343730
    Abstract: The turning device has a guideway (13) which is formed integrally on the tong carrier (3) and in which is guided the roller (16) of an oscillating lever (15). The reciprocating movement of the guideway (13) is transmitted via the oscillating lever (15) to a pivot pin (14). The latter turns the portion (A) in conjunction with a counter-holder (22). The turning device is used on horizontal cross-transfer presses having a high production rate for metal forming starting from portions of wire.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: September 6, 1994
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Ulrich Steinhauser
  • Patent number: 5156073
    Abstract: A method and apparatus achieve the intermittent feeding of raw material into a shearing station by exerting a drive torque on draw-in rollers in order to effect their rotation in one arcuate direction and hence the movement of the raw material toward the shearing station. A counteracting torque, which is less than the drive torque, is continuously exerted on the draw-in rollers. Thus, during intervals following a shearing operation when the drive torque is terminated, the counteracting torque functions to reverse the rotation of the draw-in rollers and hence retract the sheared end of the raw material away from the shearing station.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: October 20, 1992
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Hermann Zanzerl, Heinz Dettwiler
  • Patent number: 5099672
    Abstract: In the proposed forming press, a reversal device (17 to 20) is provided on a retention pin (1) inside the male die part (4) of the press, which reversal device retains the retention pin in its two end positions (X.sub.1, X.sub.2) until said retention pin is moved by a transmission member (10) on the male die part side or by the pressed article (2) inserted in the die (3).
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: March 31, 1992
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Ulrich Steinhauser, Ernst Ballmer
  • Patent number: 4791803
    Abstract: In a multi-stage forming machine, a die-change device, for male dies in a male-die block has a mounting plate for receiving a clamping face of the male-die block on one side. Bayonet fasteners on hollow pistons in the mounting plate then engage the male dies, and a pressure medium then moves the hollow pistons to move the male dies against thrust pieces displacably in the hollow pistons and the thrust pieces against an adjusting wedge on the opposite side of the mounting plate.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: December 20, 1988
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Joseph Broquet, Raymond Schoenenberger
  • Patent number: 4763501
    Abstract: A punch probing device including at least one punch and a cooperating punch feeler. The feeler is operable to detect both foreign matter on the punch and damage of said punch. The feeler is moved perpendicularly into and out of operative engagement with the punch by means of a linkage parallelogram. Controls for the punch and linkage are provided.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: August 16, 1988
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Maffeo Massariolo
  • Patent number: 4590780
    Abstract: Starting from a pre-heated bar, there is sheared-off first a portion (41) which, in a first forming stage of the machine, is formed into a tier shaped pressed article. In the second forming stage, the pressed article is further formed so that it has an inner ring (J), an outer ring (A) arranged co-axially to this and a radial annular web (S) connecting the two rings (J,A). The sheared-off outer ring (44) is therefore ejected in the next to last stage, while in the last working stage the inner ring (45) separated from the outer ring is subjected to further working. This last working stage involves stamping out a waste piece (35) and shearing-off an annular web (38). It is also possible to carry out a forming operation in this last working stage to upset the remaining inner ring (22a).
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: May 27, 1986
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Ernst Bachmann
  • Patent number: 4488420
    Abstract: A device for feeding material in the form of a coil of wire from a fixture for receiving and rotating said coil of wire through a straightening apparatus and a heating station to a hot and semi-cold metal-working machine in an intermittent manner. The device includes a cold feeding fixture with one or more pair of rollers which act on the cold wire to pull the wire from the coil and through the straightening apparatus and a hot feeding fixture downstream of the heating station with at least one pair of feed rollers which act on the hot wire and urge the hot wire against a stop of the metal-working machine. The device also includes adjustable link means for driving both feeding fixtures in formulant synchronism with the metal-working machine.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: December 18, 1984
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Roger Criblez, Raymond Schoenenberger
  • Patent number: 4430882
    Abstract: A blank (17), which has been sheared off from a coil of wire or from a rod, is rotated through 90.degree., this rotation being required in connection with the forging of this blank. The gripping-jaws (19, 20), serving for the purpose of transport from one station to the adjacent metal-working station, are attached, for this purpose, to rotating devices (9c, 9d), which are mounted in a manner permitting rotation and are located, on the one hand, on a guide part (7a, 7b) which is driven to reciprocate (A) and to oscillate about an axis (93), and, on the other hand, are anchored to the stationary die-holder (3) via a guiding mechanism (23a, 23b). The guiding mechanism can be regarded as a spatial double-link mechanism, possessing a connecting rod (24), a coupling link (25), a stationary pin-joint (28), a ball-joint (30), and a pin-joint (29a, 29b) which travels with the rotation device (9c, 9d). The components are arranged in such a way that the greatest part of the intended 90.degree.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: February 14, 1984
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Ulrich Steinhauser
  • Patent number: 4333329
    Abstract: Apparatus for periodically sensing and cooling the end face of one or more rams of an automatic cross transport press. In a cross transport press, on the press frame (1) there is mounted a sensing rocker (9) which executes a periodical rocking movement about a horizontal axis (A) in the work rhythm of a carriage (2) provided with rams (5). The movement of the sensing rocker (9) is transmitted from the carriage (2) through a connecting rod (20), a transmission lever (17) and the two rocker arms (8) to sensing elements (27) equipped with cooling sprinklers. The slightly angled transmission lever (17) rests upon a stop (15) and is retained upon the stop (15) by a spring (25). If a sensing element (27) encounters an obstacle, then the press is stopped; simultaneously the transmission lever (17) lifts from the stop counter to the return force of the spring (25), whereby any damage is prevented.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: June 8, 1982
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Hans Richner
  • Patent number: 4257253
    Abstract: The ejector pin for ejecting a workpiece from a die of a stamping machine is actuated by means of a cam shaft oscillated back and forth on the machine frame through less than one revolution, a radial cam mounted on the shaft, and a motion transmitting rocker carrying a cam follower. The stroke of the ejector pin can be set by angularly shifting the position of the cam on the shaft, the angular length of the cam shaft being greater than the angular spacing of the terminal shaft positions. The portion of the cam face first engaged by the cam follower during the working stroke of the ejector pin spirals uniformly outward from the cam shaft axis to an outermost position which is reached before the cam shaft movement stops.
    Type: Grant
    Filed: December 19, 1978
    Date of Patent: March 24, 1981
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Hermann Zanzerl
  • Patent number: 4250730
    Abstract: A device for the ejection of a shaped part at the male die on a cross-feed press for non-cutting metal shaping is equipped with an ejector which is controlled by the crank-pin of a crankshaft via a connecting link, a cam disc and a roller arm. The cam contour P of the cam disc has an arc K concentric to the rocker shaft and joined to a straight section G and a runout section L. The cam disc has a displaceable cam shoe the outer edge of which is located in the plane of the straight section G and which extends or shortens the straight section G when shifted. This ensures that the standstill condition of the ejector with respect to the female die, required for holding the shaped part, may be retained even when adjustments are made to the length of the stroke of the ejector at the male die at the cam disc.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: February 17, 1981
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Hans Richner
  • Patent number: 4227390
    Abstract: The present invention relates to transfer mechanism for multiple punch presses with two co-operating pairs of conveyor tongs which are fixed to a carrier element. The carrier element is movably mounted in a housing and driven to-and-fro to the operating rhythm of the punch press. The carrier element includes a bore effective to direct a lubricating fluid therethrough. Lubricating lines supply lubricating fluid to the bore at a desired fluid pressure. The bore has an outlet opening contiguous to the structure which incorporates the conveyor tongs. In the event that the conveyor tongs break away from the carrier element, the outlet opening of the bore is uncovered and the fluid pressure drops. The power supply to the press and the lubricating fluid supply are stopped in response to such a pressure drop.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: October 14, 1980
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Raymond Schoenenberger
  • Patent number: 4186589
    Abstract: Apparatus for feeding workpieces in a multi-station cross-fed press includes two movable carrier elements on which linear guides for pairs of jaws are provided. Rotatable camshafts within carrier elements actuate the jaws via levers.
    Type: Grant
    Filed: April 6, 1978
    Date of Patent: February 5, 1980
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Roger Criblez
  • Patent number: 4036089
    Abstract: The assembly is for shearing rod sections with a movable cutter carriage carrying a shearing blade between a resting position and a shearing position. A reciprocating impact head is used to drive the cutter carriage. The impact head is moved into contact with an adjacent end of the cutter carriage to effect motion of the cutter carriage to the shearing position. The cutter carriage is biased toward the impact head and the resting position to effect the return stroke motion of the cutter carriage. The contact of the impact head with the adjacent end of the cutter carriage is broken on completion of the return stroke to draw the impact head a predetermined distance back to a starting position from which the impact head is ready to strike the adjacent end of the cutter carriage with considerable momentum upon the starting of the next shearing cycle.
    Type: Grant
    Filed: June 11, 1976
    Date of Patent: July 19, 1977
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Roger Criblez
  • Patent number: 4028918
    Abstract: Device for applying lubricant to the workpiece and/or working surface of the punch of a multistage forging press. Channels are provided between the stepped holding pin of the punch and the wall of the stepped bore in which the holding pin reciprocates. The channels are connected via the interior of the punch to an external lubricant reservoir. The space formed with each stroke of the punch between the shoulders of the holding pin and its stepped bore acts as a pumping space. Each punch stroke causes lubricant to be drawn from the reservoir into the pumping space and subsequently forced out through the channels. Means are also provided by which the supply of lubricant from the reservoir can be more closely regulated in time with the working stroke of the press.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: June 14, 1977
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Hans Kuhn
  • Patent number: 3994403
    Abstract: A gripper device comprises a gripper carrier which reciprocates towards and away from an upsetting station in a multi-stage upsetting press and at least one gripper for carrying workpieces. Each gripper comprises a pair of guide elements on the carrier and a pair of gripper arms each pivotally connected to a respective one of the guide elements to be driven thereby. The gripper arms are pivoted to one another at a point which is triangularly spaced from the points at which the arms are pivoted to the guide elements. The guide elements are arranged so that as the arms open to deposit a workpiece, they are moved bodily upwards in order to clear the upsetting station, the upward motion being at a minimum as the arms start to open and increasing steadily as the motion proceeds.
    Type: Grant
    Filed: July 17, 1975
    Date of Patent: November 30, 1976
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Ulrich Steinhauser