| 摘要 |
PURPOSE: To provide an apparatus for guiding strip of cold rolled coil without pressed marks, wherein the apparatus prevents pressed marks from forming on the cold rolled coil by controlling operation of a retract cylinder and varying pressing force of rolls according to diameter of a cold rolled coil mounted on a payoff reel. CONSTITUTION: An apparatus for guiding strip of cold rolled coil without pressed marks comprises a stroke detection part(10) comprising a rack gear(12) slidingly disposed at one side of a retract cylinder(150) and fixed to a rod(152) of the retract cylinder, an encoder(16) connected to a pinion(14) engaged with the rack gear, and sensors(18) mounted on a payoff reel(200) to sense diameter of the cold rolled coil; a pressing part comprising a touch roll installed at a front part of a lower conveyor(130), load cells installed both ends of the touch roll to sense pressing force applied to the touch roll, and a proximity sensor installed at a front part of the lower conveyor; and a control part comprising a signal processing part electrically connected to the encoder, sensors, load cells and proximity sensor, and hydraulic pumps electrically connected to the signal processing part to supply an operation fluid into the retract cylinder and a swing cylinder(170).
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