Pouring sealant for pouring limited-angle motor stator and pouring method

Abstract

The invention relates to a pouring sealant for pouring a limited-angle motor stator and a pouring method. The pouring sealant comprises the components: 10 parts of epoxy resin, 1.2-1.6 parts of a component with curing and promoting effects, 5-15 parts of a filler component, and 1.5 to 5 parts of an epoxy toughening agent. The pouring method comprises the steps: 1, mounting and fixing a limited-angle motor stator into a potting mold; 2, putting the limited-angle motor stator after mold mounting into a drying oven for preheating; 3, preparing the pouring sealant according to the proportion of the components; 4, putting the pouring sealant into vacuum equipment to remove internal bubbles; 5, injecting the pouring sealant into the upper end face of the limited-angle motor stator through a sealant injection through hole of an upper mold, and achieving pouring; 6, removing bubbles in the mold in a vacuum environment; 7, putting the mold into an oven, carrying out thermocuring treatment, andcooling along with the oven after curing; and 8, disassembling the pouring mold, taking out the limited-angle motor stator, and processing to remove redundant colloid. According to the invention, theproblems of cracking of the pouring sealant and cracks among the pouring sealant, the punching sheet and the shaft sleeve are solved.

Description

technical field [0001] The invention belongs to the field of assembly of limited-rotation-angle motors, and relates to a potting technology for limited-rotation-angle motors, in particular to a potting glue and a potting method for potting a stator of a limited-rotation-angle motor. Background technique [0002] Epoxy resin potting treatment on the limited motor stator can not only strengthen the integrity, avoid direct exposure of components and windings, but also improve the impact resistance, enhance the insulation between windings, and improve the waterproof and moisture-proof performance of the device. The stator 100 of the limited-rotation-angle motor includes various parts: enameled wire 103 , iron core 102 , positioning block 101 , stator housing 104 , etc., and the materials of various parts are different. When the various materials are potted together, under high and low temperature cycles (-55°C to 70°C) and rapid temperature changes (such as a 70°C motor being pl...

AI Technical Summary

Problems solved by technology

When the various materials are potted together, under high and low temperature cycles (-55°C to 70°C) and rapid temperature changes (such as a 70°C motor being placed in an environment of -55°C for an instant), the adhesive layer itself is prone to cracking Or there are cracks between the glue layer and the stator housing and the positioning block

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