Slide driving device for presses

Details Slide driving device for presses Slide driving device for presses

B - Operations, Transporting

30

B

B30B 1/23 (2006.01) B30B 1/18 (2006.01) B30B 1/32 (2006.01) B30B 15/14 (2006.01) B30B 15/16 (2006.01)

Patent

CA 2227728

A slide driving device employs a variable-displacement pump/motor for driving a rotating element of the slide driving device. The displacement volume of the variable-displacement pump/motor, whose output drives the slide, is varied in response to deviation of measured driver parameters from commanded driver parameters. An energy storage device temporarily absorbs excess energy during a portion of a molding cycle, and returns the energy to the system for reuse. In one embodiment, the energy storage device is an accumulator. In a second embodiment, the energy storage device is a flywheel. The combination of variable displacement volume and energy storage maintains the fluid pressure substantially constant during a cycle of the slide driving device.

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