GRAB FEED TO FORGING PRESS Russian patent published in 2000 - IPC

FIELD: plastic metal working, namely part transfer between working positions of forging die. SUBSTANCE: grab feed includes grab liners having grippers and coupled with lifting arms suspended to closing balance beams. Lifting levers are connected by means of tie rods with lifting balance beams mutually coupled by means of three-dimensional connecting rod and double-arm lever. Right ends of grab liners by means of shaft provided with Cardan joint are joined with carrying lever having safety arm fixed against rotation relative to carrying lever by means of spring-loaded catch. Safety lever by means of regulated connecting rod, double-arm lever and three-dimensional connecting rod is joined with lengthwise-motion balance beam. Balance beams through rollers engage with cams mounted on cam shaft. Pneumatic cylinder is mounted on spline end of cam shaft. One end of body of pneumatic cylinder is in the form of cam semicoupling engaging with pinion rotating synchronously with crank drive of press. Another end of body of pneumatic cylinder is in the form of clutch half that may engage with clutch half mounted on boss of worm gear of additional drive mechanism. EFFECT: possibility of accurate synchronization of press and grab feed operation, strict cyclogram of complex, its enhanced efficiency, elimination of wear of coupling members and brake of press in automatic mode. 3 dwg