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US 4,535,689 AGranted
Press with wedge
OwnerLadislao W. Putkowskiinventor
Life of this patent
Estimating the term…
Abstract
A press having a pre-stressed frame, to reduce the energy required in each pressing cycle, and in which oppositely acting wedges provide the clamping force. The mold or other structure to be pressed is assembled outside the press and then is slid on guide rails into the press with very small clearances. The press can also be used for molds or dies fixed to stationary or movable platens.
Claims20
A press comprising:
- (a) a frame forming a closed loop;
- (b) a first pressure surface disposed within said loop;
- (c) a movable platen within said loop, which has a second pressure surface opposed to and spaced from said first pressure surface to permit the introduction between said first and second pressure surfaces of a structure to be compressed;
- (d) means supporting said movable platen for movement thereof in a direction towards and away from said first pressure surface;
- (e) wedge means acting between said frame and platen for moving the movable platen towards said first pressure surface to compress a structure disposed between said first and second pressure surfaces, said wedge means including first and second wedges which are movable in opposite directions in a plane generally at right angles to said direction of platen movement, said wedges having respective inclined surfaces which taper in opposite directions with respect to said plane and respective support surfaces which are disposed in said plane;
- said platen having correspondingly inclined surfaces co-operating with said inclined surfaces of the wedge means and adapted to cause movement of the movable platen towards the first pressure surface in response to inward movement of the wedges in said opposite directions;
- and
- (f) drive means for propelling said first and second wedges in opposite directions to move said movable pressure surface;
- said inclined surfaces and drive means being arranged to cause said movement of the movable platen towards said first pressure surface without imparting any substantial lateral force to the movable platen.
6 more elements
A press comprising:
- (a) a frame forming a closed loop;
- (b) a first pressure surface disposed within said loop;
- (c) a movable platen within said loop, which has a second pressure surface opposed to and spaced from said first pressure surface to permit the introduction between said first and second pressure surfaces of a structure to be compressed;
- (d) means supporting said movable platen for movement thereof towards and away from said first pressure surface;
- (e) wedge means for moving said movable platen towards said first pressure surface to compress a structure disposed between said first and second pressure surfaces, said wedge means including first and second wedges which taper in opposite directions and which are movable in said directions, and means slidably co-operating with said wedge means and adapted to cause movement of the movable platen towards the first pressure surface in response to movement of the wedges in said directions, without imparting any substantial lateral force to the movable platen;
- and,
- (f) hydraulic actuating means including a cylinder, a piston in said cylinder, said piston having a rod, and means connecting said cylinder to said first wedge means and said rod to said second wedge means so that when said piston is moved in said cylinder, said first wedge means will move in one direction and said second wedge means will move in the opposite direction.
4 more elements
Dependencies are inferred from the claim text.