Patent ID: 6684723
Filing Date: 2004-02-03
Classification: B21K,Y10T

Abstract:
An apparatus for producing a lifting and lowering movement for lifting and lowering transverse transporting tongs of a forming machine, comprising:a movable cam carrier on which a control cam and a counter cam are mounted; a pivotably mounted double lever including a control roller arm and a control roller mounted on the control roller arm and rolling on the control cam, and a counter roller arm, fixedly mounted relative to the control roller, arm, and a counter roller, rotatably mounted on the counter roller arm and rolling on the counter cam, the control cam and the counter cam rotating the double lever in opposite directions of rotation through the control roller arm and counter roller arm, or respectively; a movable spring element cam; a spring element lever on which a spring element roller, is rotatably mounted, the spring element roller rolling on the spring element cam; and a spring element, arranged on the spring element lever and acting on the double lever to rotate the double lever in the same direction of rotation that the double lever is rotated by the counter roller.