A positioning device for preventing lateral movement of a workpiece when the mould is opened

CN224333296UActive Publication Date: 2026-06-09TAILIN MOULD (GUANGDONG) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TAILIN MOULD (GUANGDONG) CO LTD
Filing Date
2025-07-21
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In the prior art, workpieces with inclined surfaces are prone to slipping along the inclined surface of the pressure ring during the stamping process due to the mismatch between their own weight and the pushing direction of the ejector pin. This causes the workpiece to fall out of the preset picking position, affecting production efficiency and equipment gripping accuracy.

Method used

The blank holder and positioning assembly are driven by nitrogen springs. The blank holder is lifted to form a sloping support when the mold is opened, and the positioning assembly extends to abut the edge of the sheet after the sheet is stamped, thus preventing the workpiece from sliding laterally through mechanical limiting.

Benefits of technology

It effectively prevents the workpiece from slipping along the inclined surface of the pressure ring during the mold opening process, ensuring the positioning accuracy and stability of the workpiece, improving the success rate of automated gripping equipment, and ensuring the continuity and stability of stamping production.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224333296U_ABST
    Figure CN224333296U_ABST
Patent Text Reader

Abstract

This invention provides a positioning device for preventing lateral movement of a workpiece during mold opening. The device includes a lower mold assembly and a positioning assembly. The lower mold assembly includes a punch, a blank holder, and a lower mold base. The punch is fixedly mounted on the lower mold base. The blank holder is vertically movable and positioned on the lower mold base, surrounding the outer periphery of the punch. The bottom of the blank holder is connected to the lower mold base via a nitrogen spring. The working surface of the blank holder is inclined. During mold opening, the blank holder is lifted by the nitrogen spring, making its working surface higher than the punch. The positioning assembly is vertically extendable and retractable on the working surface of the blank holder. It can retract into the blank holder before sheet metal stamping and extend out of the blank holder during mold opening after sheet metal stamping, abutting the edge of the sheet metal to achieve horizontal positioning of the workpiece. This invention has the advantages of preventing the workpiece from sliding along the inclined surface of the blank holder during mold opening and ensuring workpiece positioning accuracy.
Need to check novelty before this filing date? Find Prior Art