Stator Terminal Positioning and Heating in Resin Molding
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Solution Overview
Problem
The existing resin molding method for stator coils increases the time required to assemble stator terminals to another device due to the need for a dedicated device to adjust the position of the stator terminal after molding, which is time-consuming and inefficient.
Innovation Solution
A resin molding method that uses a conducting terminal block and a terminal holding member to adjust the position of the stator terminal within a predetermined range before molding, allowing for simultaneous adjustment and heating of the stator coil, thereby reducing the overall time required for assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a dedicated device is used to adjust the position of the stator terminal after molding, then the position adjustment is achieved, but the required time period from stator coil mounting to stator terminal assembly increases
Solution Approach 1:
The patent combines the position adjustment function and the heating function into a single apparatus. The terminal holding member can move the stator terminal in the radial direction to adjust its position, while the heating unit simultaneously heats the stator coil. This merging of functions eliminates the need for a separate dedicated adjustment device and reduces the overall processing time.
Solution Approach 2:
The patent performs position adjustment of the stator terminal before the resin molding process. By adjusting the terminal position in advance while the apparatus is still accessible and before final assembly, the need for post-molding adjustment is eliminated, reducing the total time required from coil mounting to terminal assembly.
2Manufacturing precision
If the stator terminal position is adjusted after molding using a dedicated device, then the position variation is corrected, but the device complexity increases
Solution Approach 1:
The apparatus is designed to perform multiple functions: the terminal holding member can hold and position the stator terminal, the heating unit can heat the stator coil, and the integrated structure can support the resin molding process. This multi-functional design eliminates the need for separate dedicated adjustment devices, reducing overall system complexity.
3Productivity
If electricity is supplied to heat the stator coil before placing the coil fixing agent, then the curing speed is improved, but the position adjustment flexibility is reduced
Solution Approach 1:
The patent performs position adjustment of the stator terminal before supplying electricity for heating. By adjusting the terminal position in advance while the apparatus is still accessible and before the resin curing process begins, the system maintains both fast curing (through immediate heating after positioning) and position adjustment flexibility.
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 from mounting the stator coil to the stator core to assembling the stator terminals by enabling the adjustment and heating of the stator coil in a single apparatus, improving production efficiency and reducing the need for additional processing steps.
Implementation Method 1
supplying electricity to and heating the stator coil via the stator terminal
Data Source
AI summary
A resin molding method includes a first step of supplying electricity to and heating a stator coil via a stator terminal in a state that the stator terminal clamped; and a second step of molding an insulating resin at a coil end of the heated stator coil. The first step places the stator terminal on a conducting terminal block in such a state that clamping of the stator terminal by the conducting terminal block and a terminal holding member is released, before supplying electricity to the stator coil, and lifts up and down the conducting terminal block, such that the portion of the stator terminal becomes within a predetermined range.