A rivet point integrated structure of an iron core stamping die

By adopting an integrated riveting structure in the iron core stamping die, the precise stamping forming of the riveting points and riveting grooves is achieved, solving the problem of easy misalignment of the riveting points and riveting grooves in traditional iron core manufacturing, and improving the processing accuracy and production efficiency of the iron core.

CN224463522UActive Publication Date: 2026-07-07SUZHOU MINGYUNGANG ELECTROMECHANICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU MINGYUNGANG ELECTROMECHANICAL CO LTD
Filing Date
2025-07-11
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In traditional iron core manufacturing, the rivet points and rivet grooves on the laminations are prone to misalignment and concentricity deviation during secondary stamping, affecting the riveting effect between the laminations.

Method used

A riveting point integrated structure is adopted with an iron core stamping die. The riveting point and the riveting groove are accurately stamped by the cooperation between the stamping protrusion at the bottom of the stamping head and the groove on the inner side wall of the forming groove. The top block in the relief groove is integrally formed during the stamping process to ensure accurate positioning.

Benefits of technology

It improves the machining accuracy of rivet points and rivet grooves, prevents secondary stamping deviations, and enhances the forming quality and production efficiency of iron core laminations.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224463522U_ABST
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Abstract

The application discloses a rivet point integrated structure of a core stamping die, relates to the technical field of motor core manufacturing, and comprises a frame, a lower concave die corresponding to a core punching sheet arranged in the frame and an upper convex die located above the lower concave die, a driving element one provided at the top of the frame and used for driving the lower pressing of the upper convex die, a forming groove corresponding to the core punching sheet arranged in the lower concave die, a stamping head matched with the forming groove and arranged at the bottom of the upper convex die, a stamping protrusion matched with a riveting groove of the core punching sheet and arranged at the bottom of the stamping head, a groove matched with a rivet point of the core punching sheet and arranged in the inner wall of the forming groove, and a top block matched with a giving-up groove in the rivet point and arranged in the groove. The stamping protrusion at the bottom of the stamping head and the groove in the inner wall of the forming groove can stamp and form the riveting groove and the rivet point of the core punching sheet, improve the machining precision of the rivet point and the riveting groove on the core punching sheet, and prevent the stamping deviation of the rivet point and the riveting groove on the core punching sheet.
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