System and method for vacuum pouring of insulation resin used for motor rotor

Abstract

The invention relates to a system for vacuum pouring of insulation resin used for a motor rotor. The system comprises a vacuum glue filling tank, a vacuum pump, a high-pressure inert gas transmitting device, a vacuum emulsion machine and a glue transmitting pipe, wherein the vacuum pump and the high-pressure inert gas transmitting device are respectively connected with the vacuum glue filling tank by virtue of a pipeline; the vacuum emulsion machine is connected with the vacuum glue filling tank by virtue of the glue transmitting pipe; a stirring device is arranged in the vacuum emulsion machine; the vacuum emulsion machine is provided with a device which is connected with the vacuum pump; the resin to be filled with glue is mixed in the vacuum emulsion machine. According to the system, the vacuum emulsion machine is additionally arranged, the vacuum degree requirement during mixing of the resin is ensured; the discharge of the gas in the resin is facilitated. The invention also relates to a method for vacuum pouring of the insulation resin for the motor rotor.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a vacuum pouring system and method for insulating resin of a motor rotor. technical background [0002] During the operation of the high-speed motor rotor, in order to ensure the rigidity and stability of the rotor winding, the insulating resin casting method is generally used to firmly bond the rotor winding and the rotor core to form a whole. The casting quality of the insulating resin directly determines the stability of the rotor operation, colloid cracking and trachoma will cause the vibration of the rotor winding and uneven heat dissipation, resulting in premature failure of the rotor winding. The key to the casting quality of insulating resin lies in the casting process parameters and resin curing parameters, and these two aspects are mainly determined by the equipment. The current pouring process mainly adopts the method of gravity pouring in a closed vacuum container....

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Problems solved by technology

[0003] This method has four defects: first, it only considers the vacuum requirement of the pouring process, but does not consider the vacuum degree requirement of the resin mixture, and the gas brought in during the mixing will greatly reduce the quality of the glue; the second is High-viscosity resin potting adopts gravity pouring method, which is prone to porosity and trachoma; the third is that the potting process is carried out at room temperature, affected by the ambient temperature, in low temperature seasons, the viscosity of the resin increases, which affects the quality of potting; the fourth is the oven studio The temperature deviation is large, the solidification and cooling of the colloid cannot be precisely controlled, and it is easy to cause the colloid to crack

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