Long stator vacuum epoxy injection molding production line

By combining a precision mold system, a vacuum system, and a heating system, the encapsulation problem caused by the positional displacement of the long stator core within the mold cavity was solved, achieving efficient vacuum epoxy injection molding and improving the yield rate of long stator cores.

CN223604817UActive Publication Date: 2025-11-28NINGBO HONGDA MOTOR DIE
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Patent Information

Application Number
CN202423013287.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-11-28
Estimated Expiration
2034-12-06

AI Technical Summary

Technical Problem

In existing long stator injection molding production lines, due to issues such as mold design and positional offset, problems such as bubbles in the encapsulation layer, uneven coating, shrinkage cavities, and poor appearance quality occur, affecting the encapsulation effect of the long stator core and resulting in a high defect rate.

Method used

The system employs a precision mold system, a vacuum system, a heating system, and a gating system. Positioning and fastening mechanisms ensure the consistent position of the long stator core within the mold cavity. The vacuum system is used for evacuation, and the heating system is used for temperature control. The gating system is then activated for vacuum epoxy injection molding.

Benefits of technology

It effectively eliminates defects such as material shortage, shrinkage cavities, and uneven casting, and improves the yield of long stator cores.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a long stator vacuum epoxy injection molding production line which comprises a precision mold system, and a vacuum system, a heating system and a pouring system which are connected with the precision mold system, the precision mold system comprises a left cavity mold, a right cavity mold, a positioning mechanism and a fastening mechanism, the positioning mechanism fixes a long stator iron core up and down, and the fastening mechanism is used for fastening the long stator iron core. A cavity formed by the left cavity mold and the right cavity mold is fastened up and down through the fastening mechanism, the precision mold system is placed on the heating system to be heated, a closed area is formed through the vacuum system, vacuum epoxy injection molding is conducted on the long stator iron core through the pouring system, and the positioning mechanism and the fastening mechanism are used for positioning the long stator iron core. The consistency and accuracy of the position of the long stator iron core in the mold cavity are guaranteed, vacuumizing is conducted through the vacuum system, temperature control is conducted through the heating system, the mold cavity can be completely filled with epoxy materials after the pouring system is started, and the yield is high.
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