Three-phase asynchronous motor special for injection molding machine

Abstract

The invention relates to a three-phase asynchronous motor special for YZS series injection molding machines. The three-phase asynchronous motor is mainly characterized in that: a front end cover and a rear end cover are fixedly connected with a motor shell; a motor shaft is supported in the motor shell by a bearing assembly; a rotor is arranged on the motor shaft; a stator is arranged on the motor shell; a fan is fixed on the motor shaft; and a fan cover is fixed on the rear end cover. The three-phase asynchronous motor is characterized in that: an axial end of the motor shaft extends out of the front end cover; and a key is arranged in a key groove in front of the motor shaft. A wave-shaped spring is arranged between the bearing assembly and the front end cover; an elastic retainer ring for a hole is arranged between the bearing assembly and the rear end cover; the upper part of the stator is connected with a junction box through a bolt; and a gap is formed between the stator and a rotor core. The three-phase asynchronous motor can reduce the cost and raw materials, has high power, can improve the starting torque, can eliminate synchronous accessory torque and rotor harmonic field, is favorable for reducing electromagnetic noise, can improve the starting torque and reduce non-uniformity of the air gap of the motor, and can improve the process flow and processing assembly quality.

Description

technical field [0001] The invention relates to a special three-phase asynchronous motor for YZS series injection molding machines, specifically for driving injection molding machine equipment. Background technique [0002] In the prior art, the load of the three-phase asynchronous motor (mainly four-pole and six-pole) matched with the injection molding machine is not rated, but a periodic change process from no-load, full-load to overload. It often requires low noise and high performance of starting torque when overloaded. The injection molding machine not only requires the motor to run at full load, but also requires the motor to run with short-term overload (the maximum overload multiple is 1.75 times). Therefore, most ordinary motors cannot meet this requirement. , so a special motor is needed to match the injection molding machine. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages, thereby providing an inje...

AI Technical Summary

Problems solved by technology

It often requires low noise and high performance of starting torque when overloaded. The injection molding machine not only requires the motor to run at full load, but also requires the motor to run with short-term overload (the maximum overload multiple is 1.75 times). Therefore, most ordinary motors cannot meet this requirement. , so a special motor is needed to match with the injection molding machine

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