This equipment is mainly composed of pay-off, drawing machine, annealing machine, tension controller, take-up and electric control system.
4.1 Drawing machine
The drawing tower wheel adopts a double-layer arrangement design, which is driven by a main motor through 4 belt shafts and the take-up shaft through a flat belt; the round copper wire enters the drawing host through the pay-off frame, and is drawn through the tower wheel and drawing dies. When drawing, the cooling method of wire and mold is spray type. The wire passes through the take-in wheel, the counting guide wheel, the tension rocker guide wheel, the thread guide wheel, and the cable guide wheel, and enters the take-up reel. The whole machine is designed with ergonomic principles, the structure is reasonable and reliable, and the operation is convenient.
4.2 Annealing machine
The annealing adopts the contact short-circuit annealing principle, and the annealing machine uses a DC controller to track the takeup speed to control, ensuring that the wire is fully annealed when it is started and stopped. The annealing machine consists of a conductive system, an oxidation protection system, a cooling system, a drying system, and an electrical system. The oxidation protection method adopts steam protection; the cooling and lubrication adopts the drawing fluid with a concentration of 0.5% to 1%. Generally, cooling is provided by setting a pool or an external heat exchanger; the drying system uses compressed air and dies to dry. It can ensure that the appearance of the annealed copper wire is bright and free of oxidation, and can also meet the performance requirements of the elongation and resistivity of the annealed copper wire.
The take-up adopts PND 400 high-speed wire take-up machine, which is suitable for the take-up of high-speed wire drawing machine. According to customer requirements, single or double reels can be selected, suitable for PND400 or PND300 reel. The clamping, lifting and braking of the reels are all pneumatic. The traversing system is driven by an independent motor and switched by a screw rod clutch. The braking system of the winding part adopts pneumatic brakes. When a disconnection occurs during operation or an emergency stop is performed, an emergency stop is performed immediately, quickly and promptly. Brake the reel to prevent damage to the wire and ensure safe operation.