In metal processing, the straight-forward wire drawing machine is a common one. In the past, it was usually realized by a DC generator-motor unit. Now with the advancement of technology and the popularization of frequency converters, the frequency conversion control has begun to be It is widely used in wire drawing machines, and can realize the functions of drawing variety setting, operation automation, production process control, real-time closed-loop control, automatic meter counting and other functions through PLC.
The straight-forward wire drawing machine adopts the frequency conversion speed regulation system, which has reliable technology and significant energy saving. The speed regulation range is 30:1 during normal operation, and at the same time, it can provide more than 1.5 times the rated torque at 5% of the rated speed. The straight-forward wire drawing machine mainly draws the stainless steel wire from the finish rolling, which is the most difficult to control in the wire drawing machine. Since it is drawn by multiple motors at the same time, the operation efficiency is very high.
The straight wire drawing machine allows the wire to slip between the various dies, and at the same time it has high requirements on the synchronization of the motor and the rapidity of the dynamic response. Because stainless steel is relatively brittle and lacks the toughness like high carbon steel wire or steel cord, it is easier to break during operation.
The wire drawing part of the straight wire drawing machine has six drums with a diameter of 400mm. A cylinder swing arm for position detection is installed between each drum. The position of the swing arm can be detected by a displacement sensor. At the same time, the wire will generate pressure on the cylinder of the swing arm, causing the swing arm to move down.
The winding motor of the straight-type wire drawing machine adopts a self-sliding tapered bracket, and the winding diameter basically does not change during the whole process, so the calculation function of the winding diameter is not required. It adopts a special frequency conversion motor and has a mechanical braking device; the system logic control of the straight wire drawing machine is relatively complicated, and there are various linkage relationships, which are realized by PLC. The control of synchronization is all realized inside the TL-MD320 inverter and does not depend on external control.
