Patents Assigned to Kabushiki Kaisha Tetsan Industries
  • Patent number: 4844146
    Abstract: A die casting apparatus comprising a secondary pressing cylinder mounted on one mold, a sequence valve, a control valve and a reducing valve, the valves being interposed between a switching valve and the secondary pressing cylinder. Operating timing of the secondary pressing cylinder is changed by the sequence valve, the moving speed of the pressing plunger is adjusted by the flow control valve, and the pressing force of the pressing plunger is varied by the reducing valve. The operation of secondary pressing is adjusted by the sequence valve and the flow control valve.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: July 4, 1989
    Assignee: Kabushiki Kaisha Tetsan Industries
    Inventor: Kosuke Kikuchi