Application of GT200 series products on sheet extruders

I. Introduction

With the development of society, people have a huge demand for some portable daily necessities, the process of plastic products and quality requirements are changing day by day, the front-end source of plastic products manufacturing industry which need to be used in the sheet extruder, the following easy to drive the electric GT200 series products in the sheet extruder application to explain.

II, easy drive GT200 series inverter in the sheet extruder applications

Sheet extruder is mainly composed of screw extruder, sheet extrusion die head, three-roll calender, edge cutting machine, torque winding machine and other equipment.

Sheet extruder in the work, the material from the extruder hopper to join, the material through the electromagnetic heater heated to a certain temperature, and then by the screw extruder into a radial extrusion to the sheet forming die head, and then by the die head into the form of sheet extrusion, and then through the three-roller calender, and then by the in-line edge cutter to remove both sides of the waste edge, to the tension frame, and then to the back of the moment winding machine for the work of the rolls.

In the process of equipment operation, it is required to control the screw extrusion temperature, as well as sheet extrusion die head pressure is constant, there are certain variables in the online operation of the die head pressure, when the die head pressure becomes large, the upper computer controller to determine the amount of frequency converter to become smaller, so that the motor deceleration, so as to reduce the die head pressure, and vice versa when the die head pressure becomes small, the upper computer controller to give the frequency converter to the amount of the feed becomes large, so that the motor to accelerate, so as to increase the die head pressure, in the extrusion machine.Increase the die head pressure, in the extrusion process, the die head pressure will have a slight variable existence, so it is necessary to carry out real-time monitoring of the die head pressure of the sheet extrusion, and real-time adjustment of the rotational speed of the screw extruder, the performance of the frequency converter is required to accelerate and decelerate the response is fast, the steady speed precision is high, the resolution of the AI port is high, and the output frequency of the GT200 product can be quickly adjusted according to the command of the upper computer during the normal operation process.During normal operation, the output frequency of GT200 products can be changed quickly according to the command of the host computer, and the resolution of AI port is: the highest frequency×±0.1%, the frequency accuracy: the highest frequency×±0.2%, and the steady-state accuracy of running speed: ±0.5% of the rated synchronous rotation speed, so as to satisfy the on-site application.

III. Site pictures

The field uses terminal start, the upper computer controller given 0-10VDC to control the inverter, fault alarm output, inverter analogue feedback to the upper computer for closed loop.Before the test run to confirm that the motor rotation direction is consistent with the marking.

IV. Conclusion:

 Easy drive electric GT200 series products in the sheet extruder equipment can have a very good speed control accuracy and speed accuracy, so as to improve product quality and work efficiency, GT200 series products are beautiful and generous, high reliability for such customers to use, won the praise of the customer is worth promoting the application.