Air flow edge stabilizing and anti-blocking device and method for high-speed shearing

By setting guide hole groups on the top plate of the guide channel and connecting them with graded pressure pneumatic modules, an airflow constraint air curtain is formed, which solves the problems of waste edge swaying, entanglement and blockage during high-speed shearing of thin metal strips, and achieves stable conveying and efficient production.

CN122644679APending Publication Date: 2026-08-28CHINA NAT HEAVY MACHINERY RES INSTCO
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Patent Information

Application Number
CN202610907854.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-23
Publication Date
2026-08-28

AI Technical Summary

Technical Problem

In the process of high-speed shearing of thin metal sheets and strips, the waste edges are prone to swaying, entanglement, and blockage, leading to production line downtime and a decrease in yield. Furthermore, existing solutions such as vacuum edge-rolling systems and mechanical pressure rollers suffer from high equipment investment, frequent maintenance, and severe wear.

Method used

An airflow-based edge-stabilizing and anti-clogging device is adopted. By setting a group of guide holes on the top plate of the guide channel and connecting them with a graded pressure pneumatic module, a constrained air curtain is formed. The airflow is used to suspend the waste edge in the middle of the guide channel, avoiding contact friction and blockage.

Benefits of technology

It achieves stable conveying of waste edges, avoids the defects of mechanical contact and vacuum systems, improves the continuous operation time and yield of the production line, and reduces maintenance costs.

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Abstract

This invention belongs to the technical field of high-speed finishing shearing equipment for metal strips, and specifically relates to an airflow edge stabilization and anti-clogging device and method for high-speed shearing. The device includes a streamlined waste edge guide chute, with multiple sets of guide holes on the top plate of the upper chute. These guide holes are connected to a graded pressure pneumatic control module and are evenly arranged along the length of the guide chute. The outlet direction is downward and inclined towards the discharge direction, forming an angle of 25°–35° with the strip's running direction. The graded pressure pneumatic control module outputs an adjustable air pressure of 0.2–0.6 MPa, forming a constrained air curtain that suspends and constrains the waste edge in the middle of the guide chute, suppressing waste edge swaying, flying, entanglement, and clogging. This invention is installed behind the disc shear, supplying air to the guide hole sets to form an inclined constrained air curtain that stabilizes the waste edge in the middle of the guide chute without contact. It is suitable for thin metal strips with a thickness of 0.15–0.55 mm and a linear speed of 400–1000 m / min, and has advantages such as simple structure, no need for vacuum or mechanical clamping, strong adaptability, and stable operation.
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