Disc spring forming die and stripping method

By designing the specific structure of the disc spring forming mold, including the upper thrust, the discharge pusher and the discharge spring, the problems of poor surface parallelism and complex automatic deduplication after the disc spring forming are solved, and higher consistency and automated deduplication are achieved, reducing costs and improving efficiency.

CN111215537BActive Publication Date: 2025-03-18SHANGHAI HEGONG DISC SPRING MFG CO LTD
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Patent Information

Application Number
CN202010198186.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-03-19
Publication Date
2025-03-18
Estimated Expiration
2040-03-19

AI Technical Summary

Technical Problem

After the plate spring is formed, the parallelism of the upper and lower surfaces has a large difference, the consistency between geometric dimensions and force value characteristics is poor, and the automatic material removal after forming is complicated, which is cost-effective and low efficiency.

Method used

A disc spring forming mold is designed, including a molding upper mold, a molding lower mold and a base. It adopts a structure of an upper thrust, a discharge pusher and a discharge spring. By cooperating with the inner diameter gap of the workpiece flat pad, the guide positioning of the workpiece flat pad is realized, and the automatic discharge of the disc spring is realized through the design of the discharge pusher and the discharge spring.

Benefits of technology

The consistency between the geometric dimensions and force value characteristics of the disc spring after forming is improved, and the automatic separation of the disc spring and the mold is realized, reducing production costs and improving working efficiency.

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Abstract

The present invention discloses a disc spring forming die and a stripping method, wherein an upper ejector pin is arranged at the center of the lower end of the forming upper die, a circular through hole is arranged downwardly in the middle of the forming lower die, a accommodating space is arranged downwardly on the lower surface of the upper end of the forming lower die, a stripping push piece is arranged at the top of the stripping spring and arranged in the accommodating space, and the forming lower die is fixedly mounted on a base; the stripping push piece is convex, and the upper half of the stripping push piece passes upwardly through the circular through hole; (i) the workpiece is placed flat on the upper end surface of the forming lower die; (ii) the disc spring is formed; (iii) stripping, after the forming is completed, the forming upper die moves upwardly under the action of a hydraulic press and separates from the forming lower die; the stripping spring pushes the stripping push piece to push the formed disc spring away from the forming lower die. The present invention has a reasonable structural design, can realize automatic separation of the disc spring from the forming die after forming, has high efficiency, low cost, and is practical and convenient.
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