Straight wire drawing machine is one of the common metal wire processing equipment. Straight wire drawing machine can stretch high, medium and low carbon steel wire, stainless steel wire, copper wire, alloy copper wire, aluminum alloy wire, etc. Line processing.
I. Overview
Straight wire drawing machine is one of the common metal wire processing equipment. Straight wire drawing machine can stretch high, medium and low carbon steel wire, stainless steel wire, copper wire, alloy copper wire, aluminum alloy wire, etc. Line processing.
2. Working principle
The working principle of the straight wire drawing machine is to control the metal flow rate of each reel to be equal at all times. In the wire drawing process of the straight-type wire drawing machine, after the wire is wound from a drum for a certain number of turns, it directly enters the next wire drawing die. For the traditional wire drawing machine, if the uneven wear of the wire drawing die, the fluctuation of the motor speed or other reasons disrupt the balance of the metal second flow rate, this is bound to cause a change in the tension of the steel wire. This change is reflected in the small swing and displacement of the tuning roller The current sensor converts the oscillating displacement of the tuning roller into an electrical signal, which is transferred to the PLC through the data acquisition A/D board. After the algorithm model is run, the output is transferred to the inverter through the data acquisition A/D board, and the speed of the inverter is adjusted to Set the value to achieve the purpose of matching the front and rear reel speeds. This is undoubtedly costly! With 6000V inverter, it can provide customers with convenient control solutions.
3. System configuration
In this straight-through wire drawing machine, 8 sets of drums adopt 6000V series inverter 30kW, and rewinding adopts 6000V series inverter 18.5kW. The motor adopts 6-pole frequency conversion motor, only need to install encoder, no need to install tension sensor and swing arm mode. The 8mm copper material is stretched to the finished product of 3mm through 9 molds and then rolled up for use. The working speed is infinitely adjustable from 0 to 670 m/min, and the maximum output can reach 2.5T.
Four, system advantages
The operation console of the machine is simple and clear. The whole operation panel only has three buttons of start, stop and emergency stop and a speed regulating potentiometer. The wiring of the control part is also simple and convenient. The touch screen, PLC, and 9 frequency converters are all connected by communication, and the internal logic is used for die-cutting and wire-drawing interlock; the frequency conversion torque parameters are changed by the addition of a touch screen; the parameters such as wire-drawing length and weight are displayed in real time; plus S7-200PLC Start and stop control, brake control, speed measurement, length measurement, weight calculation, etc.; there is no need to install tension sensor and swing arm mode, the mechanical design and manufacture is simple and convenient.
The entire commissioning process is simple and convenient, just set the motor parameters and the required tension size correctly; during operation, the inverter dynamically responds to the real-time working conditions of the wire drawing, and corrects its output torque to meet the drawing process requirements.