Multi-Strand Rotary Shear Cutting With Movable Guides
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Solution Overview
Problem
Current systems for cutting ferrous long rolled products to commercial length are inefficient and require significant space, as they cannot simultaneously and effectively process multiple strands from a rolling mill before discharge onto a cooling bed.
Innovation Solution
A system comprising rotatable drums with cutting knives and movable guides that can position multiple strands within the cutting trajectory, allowing simultaneous cutting of long rolled products into finished segments, with a compact design that minimizes space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple strands are cut simultaneously using a shear with rotatable drums, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple cutting operations into a single shear device with rotatable drums that can simultaneously cut multiple strands. The shear integrates several cutting knives on rotating drums, allowing parallel processing of multiple strands in one operation, thereby improving productivity while managing device complexity through functional integration.
Solution Approach 2:
The patent employs movable guides that can be positioned in different locations along the rolling line and rotatable drums with knives that rotate to engage strands. This dynamic configuration allows the shear to adapt to different strand positions and cutting requirements, enabling simultaneous cutting of multiple strands while maintaining operational flexibility.
2Area of stationary object
If a compact cutting system is used, then space requirements are reduced, but the ability to process multiple strands simultaneously is limited
Solution Approach 1:
The patent utilizes the rotational dimension of the drums to achieve multi-strand cutting within a compact footprint. By rotating the drums to different angular positions, the system can engage multiple strands sequentially or simultaneously without requiring large linear space, thus achieving high productivity in a compact arrangement.
Solution Approach 2:
The movable guides and rotatable drums are designed to be universally applicable to multiple strand configurations. The guides can be repositioned along the rolling line, and the drums can be rotated to engage different strand positions, allowing the same compact device to process varying numbers of strands according to production requirements.
3Productivity
If strands are cut before discharge onto cooling bed, then productivity is improved, but control over strand positioning becomes more difficult
Solution Approach 1:
The patent positions the shear and movable guides upstream of the cooling bed discharge point, allowing strands to be cut before they reach the cooling bed. This preliminary cutting action enables better control over strand positioning and length, as the strands are still in a controlled environment within the rolling line rather than being dispersed on the cooling bed.
Data Source
Figure 1~2
Figure 3
AI summary
The invention concerns a system for cutting to length at least two strands of long rolled products (3, 5) preferably coming from a hot rolling mill, the system comprising: - a shear comprising at least two rotatable drums (4,6), each drums having cutting means (8,8',10,10') arranged to cut simultaneously at least two strands of long rolled products into finished segments, at least two movable guides (12,14), each guide comprising at least two channels, each channel being arranged to receive and guide at least one strand (3,5) of long product, the guides being movable between a position wherein, in operation, said at least two strands of long product are located outside of the trajectory of the cutting means in a position wherein said strands cannot be cut and, a position wherein, said at least two strands are located on the trajectory of the cutting means and can be cut by the cutting means