A stepped casting structure for lost foam casting

CN224309564UActive Publication Date: 2026-06-02CHANGZHOU CHENGWEI FOUNDRY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU CHENGWEI FOUNDRY CO LTD
Filing Date
2025-06-20
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing lost foam casting, the non-adjustable size of the clamping plate leads to loose model fixation, affecting the casting forming accuracy and yield rate, and the model is prone to displacement during the pouring process.

Method used

The clamping structure adopts a linkage between the moving block and the drive component. The clamping distance is linearly controllable and adjustable through bidirectional lead screw and worm gear transmission. It is equipped with rubber protective pads and fastening bolts to enhance structural stability and self-locking characteristics and prevent model displacement.

Benefits of technology

It achieves tight clamping of models of different sizes, improves the forming accuracy and pass rate of castings, enhances the structural stability during the pouring process, and avoids the model from coming off and displacing under vibration conditions.

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Abstract

This application relates to the field of lost foam casting technology and discloses a stepped casting structure for lost foam casting, including a base plate. The upper surface of the base plate has multiple equidistantly arranged first slots. Above the base plate are multiple overlapping plates, each with a second slot on its upper surface. A plug plate is fixedly connected to the bottom surface of each overlapping plate. This stepped casting structure for lost foam casting, through the linkage adjustment of the moving block and the drive assembly, enables symmetrical movement of the moving plate, thereby adapting to the clamping requirements of models of different sizes. Simultaneously, the threaded engagement between the bidirectional lead screw and the moving plate makes the adjustment of the clamping distance more linear and controllable. The worm gear and worm wheel transmission structure enhances operational stability, and their transmission has self-locking characteristics, preventing reverse movement caused by casting impact force, effectively solving the problem of loose fixing caused by the non-adjustable size of traditional clamping plates.
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