Application of Laeg LD320 series inverter in plastic extruder

I. Overview of Plastic Extruders

There are many types of plastic extruders, such as twin screw, multi-screw, and even no screw. Plastic extruder can be matched with various plastic forming auxiliary machines such as pipes, films and flat wires to form various plastic extrusion production lines and produce various plastic products, which are widely used in light industry.

Second, the working principle of plastic extruder

The main engine of the plastic extruder is the extruder, which consists of a heating and cooling system, an extrusion system and a transmission system. The heating and cooling system is generally resistance heating and induction heating, and the plastic in the cylinder is heated externally to reach the required temperature for process operation. The plastic is plasticized into a uniform melt by an extrusion system, and the plastic product with the required shape is produced by an extruder head with a continuous screw under the pressure established in this process through a die. The function of the transmission system is to drive the screw and supply the torque and speed required by the screw in the extrusion process, which is usually composed of frequency converter, motor and reducer.

Third, the application of Shenzhen Laeg frequency converter in plastic extruder

1. It is a good substitute for the traditional DC speed regulation system of plastic extruder, which can save energy and is easy to control and maintain. 2. The automatic torque lifting function can be set manually, which can effectively improve the starting torque.

3. Built-in simple PLC programming, 16-step speed setting, fast corresponding speed, improving production efficiency;

4. The motor starts smoothly, extending the service life of the machine.

Fourth, the application of field debugging cases