Device for controlling the lifting and pressure movements of str

Details Device for controlling the lifting and pressure movements of str Device for controlling the lifting and pressure movements of str

1986-11-12

1988-04-12

Combs, E. Michael

Metal deforming

With use of control means energized in response to activator...

Sensing tool or tool-linked part

72148, 242 781, B21C 4704

Patent

active

047366052

ABSTRACT:
The device serves to control the desired lifting and pressure-containing movements of strip pressure rolls for the reels which serve to store hot rolled strip. These reels have a rotating mandrel. The pressure rolls are actuated by piston and cylinder units for positioning the rolls electro-hydraulically in conformity with signals which indicate the relative position of the leading strip edge which rotates with the mandrel. The positioning of the roll, by the lifting and pressure-contacting movements, is effectd by position control with subordinated pressure control in a closed-circuit position control loop and a closed-circuit pressure control loop, by input of a setpoint position value which corresponds to the respectively prevailing pressure-contacting and lifting position of the pressure rolls, and by establishment of limited setpoint pressure values for both functions or directions of movement.

REFERENCES:
patent: 3028114 (1962-04-01), Asbeck
patent: 4380164 (1983-04-01), Kuwano

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