Pull-down Press Patents (Class 72/453.12)
  • Patent number: 8381645
    Abstract: A radial press comprising a first and a second structure, each having a press yoke that form a receiving chamber for a press tool. Under the action of a drive unit, the second structure can be linearly moved by a pressing stroke relative to the first structure between an open position and a pressing end position in a working plane perpendicular to the press axis. In the open position of the radial press, a lateral feed opening is formed between the two press yokes. The drive unit is arranged offset with respect to the press axis only on the side facing away from the feed opening. A supporting drive, which is arranged on the side of the drive unit facing away from the press axis and can be continuously longitudinally adjusted in a defined manner within a supporting stroke, acts between the first structure and the second structure.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: February 26, 2013
    Assignee: Uniflex-Hydraulik GmbH
    Inventor: Vaclav Hejplik
  • Publication number: 20090090161
    Abstract: [Object] An underdrive-type single action press capable of saving energy, saving space, and realizing high-precision formability in a well-balanced manner is provided. Particularly, a press capable of shortening a forming stroke, reducing overall height, exactly correcting the deflection of the slide or dies to improve adhesion of the dies to a workpiece, and realizing pressure equalization of a wrinkle holder is provided.
    Type: Application
    Filed: May 8, 2007
    Publication date: April 9, 2009
    Inventor: Hiroyuki Amino
  • Patent number: 7331281
    Abstract: A press has an upper traverse, a lower traverse below the upper traverse, and vertical frame elements extending between the traverse, fixing same together against relative movement, and forming a rigid frame with the upper traverse and lower traverse. A central traverse is vertically reciprocal on the elements between the upper and lower traverses. A workpiece is fed horizontally through the press between the upper traverse and the central traverse. A stationary support is provided adjacent the frame, and the frame is supported for at least limited vertical movement relative to the support. A drive connected between the support, the frame, and the central traverse vertically reciprocates the frame and the central traverse relative to the support.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: February 19, 2008
    Assignee: Uhlmann Pac-Systeme GmbH & Co. KG
    Inventor: Ulrich Laupheimer