Method of changing workpiece holders for press machine
Cross bar transfer press Patent #: 5140839
ApplicationNo. 398218 filed on 03/02/1995
US Classes:72/405.02, Belt or chain work carrier72/405.1, Suction device (e.g., suction cup)72/405.13, Adapted to grasp work laterally (e.g., by gripper rail or transfer fingers)72/405.16Lifting movement
ExaminersPrimary: Crane, Daniel C.
Attorney, Agent or Firm
Foreign Patent References
International ClassB21D 043/05
Foreign Application Priority Data1994-03-12 DE
AbstractA transport system for transporting workpieces through machining stations of a press device. The transport system includes at least one independent transport device dedicated to each machining station, the transport device being effective for receiving and transporting a workpiece in at least one of a 2-axial and a 3-axial transport motion. The transport system includes a longitudinal transport device for effecting a horizontal longitudinal motion of the workpiece in a transport direction of the workpiece and having a horizontally extending extension arm for transporting the workpiece between machining stations. The extension arm includes guides, and a transport slide for transporting the workpiece in the transport direction. The transport slide is disposed on the guides for being longitudinally movable thereon and has coupling device thereon for coupling one of a suction beam and a gripper arrangement to the extension arm for effecting a reception of the workpiece by the longitudinal transport device. The transport system further includes: a lifting mechanism operatively connected to the longitudinal transport device for effecting a vertical motion of the workpiece; and a closing-opening mechanism operatively connected to the longitudinal transport device and the lifting mechanism for effecting a transverse motion of the workpiece with respect to the transport direction thereof.