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Analyse de l'application des moteurs à aimants permanents dans les extrudeuses

2024-03-05 11:40:36

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L'extrudeuse originated in England in the 18th century. With the emergence of large -scale power systems that appeared in the 20th century, the extruder of electric operations quickly replaced the previous manual extrusion machine. At this point, the power selection of the extruder is preferentially selected for electric, and le moteur has become the main source of power and the main component of the current extrusion machine.

 

There are many types of electric motors used in the industry, and it is updated quickly. Therefore, in the era of rapid development of the plastic industry, the choice of electric motor types of a extruder becomes very important. It can directly determine the performance and maintenance of plastic extrusion machines.

Avec ce type de moteur multipolaire, l'extrudeuse n'aura plus besoin de boîtes de vitesses, d'accouplements, de poulies et autres dispositifs, ce qui simplifie grandement la structure de l'extrudeuse de plastique et économise l'entretien de ces pièces, et réduit également considérablement les performances de l'équipement.

More than ten years ago, the extruded machine manufacturer preferred to equip the equipment with DC motors, because the DC motor is good at the speed regulation performance compared to the previous generation of non -stepless speed adjustment motor.

Mais les moteurs à courant continu présentent deux inconvénients fatals :

1. Adaptation of AC grids. Today, the power network of various countries adopts the form of AC power network;

2. Large -scale DC motors maintenance is more troublesome, and carbon brushes need to be replaced regularly.

 

At present, some companies at home and abroad have begun to use AC permanent magnet synchronous motors as the power source of the extrusion machine. The Chinese government consciously promoting this AC permanent magnet synchronous motor. It is a good choice to choose a synchronous motor when it is not considered the cost of equipment procurement.

 

Although the cost of AC synchronous motors is high, compared with the currently used frequency conversion AC motors:

1. Under the same case, the low energy consumption is about 8%;

2. The speed is more accurate, which is better than the DC motor;

3. The torque of the motor is large, which can achieve 2.5 times the torque;

4. The motor is small and convenient for maintenance (this can be given an example, when the power is 132kW andwith certain requirement for frame size), synchronous motorsreduce the length of about 2m of the extruder. The structure of the extruder is more compact and beautiful, while saving the work space.

Avec ce type de moteur multipolaire, l'extrudeuse n'aura plus besoin de boîtes de vitesses, d'accouplements, de poulies et autres dispositifs, ce qui simplifie grandement la structure de l'extrudeuse de plastique et économise l'entretien de ces pièces, et réduit également considérablement les performances de l'équipement.

The last minimum motor is the new multi -pole motor (permanent magnet direct drive). Everyone knows that the maximum speed of the motor is the slower. This new motor is to control the speed of the motor below 100rpm by increasing the maximum of the motor, and we customize the motor directly connected to the screw directly linked according to the squeeze screw and the flange of the machine. Using this multi -pole motor, the extruder will no longer need gearboxes, coupling, belt wheels and other devices, which greatly simplifies the structure of the plastic extruder and the maintenance of these components. Consumption is more than 30% more than DC motor, and 15% of the electric energy saving energy than AC asynchronous motor can also achieve no pole speed regulation to cope with the working conditions requirements of different process products.

 

If you can control the production cost of the motor, you can provide equipment buyers with higher cost -effective and simpler maintenance plastic extruders.

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