Views:2 Author:Site Editor Publish Time: 2020-05-19 Origin:Site
What is the working principle of water tank wire drawing machine?
The water tank wire drawing machine is a small continuous production equipment composed of multiple drawing heads. By drawing step by step and placing the drawing head in the water tank, the steel wire is drawn to the required specifications. According to several major domestic tank-type wire drawing machine manufacturers, there are generally about 20 drawing heads. After each level of drawing, the wire diameter of the steel wire has changed, so the working wire speed of each drawing head should also change. In the whole drawing process, only one motor is needed to drive through mechanical transmission or gear box. According to the different die configuration, the drawing speed of each drawing head also changes. The drawing speed is based on the constant flow volume of the wire passing through the die at each moment, that is, the following formula must be established:
πD 2V1 = πd 2V2
D——The diameter of the incoming wire
V1——Line speed of incoming wire
D——Outlet wire diameter
V2——Line speed of outlet wire
The working speed of each drawing head of the water tank drawing machine is based on the above formula to ensure that each drawing head operates synchronously. Because the drawing process of the water tank drawing machine is completely completed by mechanical shaft drawing, and these mechanical shafts are driven under the same main shaft, the entire drawing system depends on the speed difference of the drawing wheel and the line tension Control synchronization and coordination.
Cooling fluid is needed to dissipate heat during operation. The take-up part is driven by a small power motor, and it is necessary to keep the tension on the line constant during winding. If this part of the tension fluctuates, the winding on the rewinding spool will be uneven.
The winding link of the water tank wire drawing machine is the core link in this equipment control system, which also directly affects the quality of the steel wire. For winding, there are usually several control methods:
1) The tension roller is used for adjustment, and the tension during winding is ensured by the counterweight of the tension roller itself.
2) Using torque control, the tension during winding is determined by the size of the torque given, but the winding tension will be uneven due to the change in winding diameter.
3) For the water tank drawing machine with high process requirements, the tension roller adjustment control method is usually adopted, and the PID correction function of the inverter ACS510 is used to control the tension roller adjustment.