Stator Manufacturing Method Using Protective Glue Coating
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Solution Overview
Problem
Conventional stator manufacturing methods face inefficiencies due to the need for pre-formed injecting holes, which slow down the solidification process and compromise structural integrity, and often result in incomplete protection of magnetic pole pieces, limiting humidity-proof and waterproof functions.
Innovation Solution
A stator manufacturing method where the shaft tube seat is coupled after the protective glue coating has formed, allowing quicker solidification and secure coupling, reducing space occupation and enhancing protection by applying the glue coating to the shaft tube and magnetic driving assembly before assembling the shaft tube seat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shaft tube seat is assembled with the shaft tube, circuit board, magnetic pole pieces, coil unit and mold case in advance, then the stator can be formed with a protection envelope, but the shaft tube seat occupies larger space during the manufacturing process and the filling room takes longer time to solidify
Solution Approach 1:
The manufacturing process is divided into two independent stages: first, the shaft tube is coupled with magnetic driving assembly components (circuit board, magnetic pole pieces, coil unit) to form a magnetic driving assembly; second, the shaft tube seat is coupled with this assembly after the protective glue coating has formed. This segmentation eliminates the filling room issue and reduces solidification time while maintaining protection envelope integrity.
2Reliability
If the injecting hole is formed on the shaft tube seat in advance, then the waterproof glue can be injected to form the protection envelope, but the injecting hole affects the structural intensity of the stator
Solution Approach 1:
The injecting hole formation step is completely removed from the process. Instead of injecting glue through a hole in the shaft tube seat, the protective glue coating is applied directly to the shaft tube and magnetic driving assembly components, which are then coupled to the shaft tube seat after the coating has formed. This eliminates the structural weakness caused by injecting holes while maintaining the protection envelope function.
3Reliability
If the protection envelope envelops the stator components, then humidity-proof and waterproof functions are provided, but the magnetic pole pieces are not completely enveloped
Solution Approach 1:
The protective glue coating is applied to the shaft tube and magnetic driving assembly components (including magnetic pole pieces) before they are coupled to the shaft tube seat. This preliminary coating ensures that all surfaces, including previously inaccessible magnetic pole piece surfaces, are completely covered with the protective coating, achieving both humidity-proof/waterproof function and complete coverage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method reduces the time required for solidification, improves manufacturing efficiency, and enhances the stator's humidity-proof, dustproof, or oil-proof functions by ensuring complete coverage of the magnetic driving assembly and secure coupling of the shaft tube seat.
Implementation Method 1
a protective glue coating with which the shaft tube and magnetic driving assembly are coated is formed
Data Source
AI summary
A stator manufacturing method for a motor includes an assembling step coupling a magnetic driving assembly onto an outer circumferential wall of a shaft tube, a mold combining step disposing the shaft tube and the magnetic driving assembly in an intra-cavity of a fixture unit, a glue injecting and forming step injecting a filling glue into the intra-cavity, with the filling glue solidifying into a protective glue coating with which the shaft tube and magnetic driving assembly are coated, a mold removing step removing the fixture unit from the shaft tube, magnetic driving assembly and protective glue coating, and a shaft tube seat coupling step providing a shaft tube seat having an engaging portion and coupling the engaging portion with the shaft tube, allowing the shaft tube, the magnetic driving assembly, the protective glue coating and the shaft tube seat to be coupled together to form a stator for the motor.