Brief Introduction to the Control of Packaging Steel Strip Coiler

Brief Introduction to the Control of Packaging Steel Strip Coiler
　　 Speed u200bu200bControl of Coiler
　　During reeling, the speed control device of the reeling machine sets and controls the speed of the output roller table, pinch roller, helper roller and reel. The basis for speed setting and control of this equipment is the final stand speed of the finishing mill. In order to make the strip head have a certain front tension when running on the output roller table, the set speed of the output roller table has an advance rate of 10%-20% than the speed of the final stand of the finishing mill; the pinch roller should absorb the strip steel For slack, there should also be a lead rate of 10%-15%; in order to transfer the coiling torque to the strip, the coiling drum causes the coiling state, and at the same time, the necking defect during coiling needs to be considered. Therefore, the speed of the thin strip steel coil The lead rate should be 10%, and the lead rate of thick strip steel should be within 35%. When the winding roller is coiling, it has a bending effect on the strip head and transfers the strip steel. It should have a larger lead rate than the reel, about 15%-40%. After the head is wound tightly, the reel is switched to tension winding. The roll is turned on and the reel is switched to current control. In addition, when the strip tail comes out of the finishing mill to the end of coiling, in order to obtain a good coil shape, the reel is turned to speed control, and the pinch roll is turned to current control, and a certain tension is applied to the strip tail.
Torque control of 　　 reel
　　 After the strip head is tightly wound on the reel, the winding is carried out under a certain tension. In order to maintain constant tension winding, as the diameter of the winding increases, the output torque of the reel should also gradually increase. In order to achieve this control purpose, two methods are usually used: one is to keep the armature current at a constant value and to increase the excitation current in proportion to the increase in the coil diameter; the other is to make the armature current Ia and D more proportional Variety. The second method has many advantages and has been widely used.