A demolding device for concrete test blocks and a method thereof

By combining a servo motor and a gas-liquid mixing pump, the demolding process is monitored in real time and dynamically adjusted, solving the problems of local stress concentration and secondary collisions during demolding in existing technologies, and achieving non-destructive and smooth demolding of early concrete test blocks.

CN122409301APending Publication Date: 2026-07-17XUCHANG XINNUO BUILDING MATERIALS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies lack real-time monitoring and dynamic adjustment of the internal interface state of the mold during the demolding process of concrete test blocks, resulting in local stress concentration and secondary collisions between the test block and the mold edge, making it difficult to achieve non-destructive, smooth, and high-quality demolding.

Method used

A ball screw system driven by a servo motor, combined with a gas-liquid mixing pump, is used to perform spectrum analysis by real-time acquisition of back pressure signals from the gas supply pipeline to evaluate the equivalent stiffness of the interface. In conjunction with a hydraulic damping chamber and a throttle valve core, the injection pressure of the gas-liquid mixture and the output torque and speed of the servo motor are dynamically adjusted to achieve a smooth demolding process.

Benefits of technology

This effectively avoids localized stress concentration and mechanical rebound, improves the integrity and safety of demolding, and ensures non-destructive demolding of early-stage low-strength concrete test blocks.

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Abstract

The present application relates to the field of building material detection test equipment, in particular to a demolding device for concrete test blocks and a method thereof; comprising micro-tension application, gas-liquid pulse injection, frequency spectrum feature analysis, dynamic speed-up demolding and hydraulic damping cavity buffering module; the system combines back pressure signal to extract high and low frequency amplitude through fast Fourier transform, calculates high frequency proportion to evaluate the interface equivalent stiffness of test block and mold in real time; the core is to dynamically adjust the gas-liquid pulse parameters and the smooth speed-up curve of the servo motor according to the stiffness evaluation result, and to generate reverse shear damping force in the internal hydraulic cavity for buffering at the moment of test block separation; the present application breaks the limitation of traditional stateless feedback mechanical pulling force, uses gas-liquid oscillation and frequency spectrum feedback self-adaptive adjustment to solve the problem of sudden change of pulling force, avoids local stress concentration, effectively prevents early age test block corner tearing and significantly improves the integrity and safety of demolding.
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