Roll Cooling Nozzle Bar Alignment Mechanism
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Solution Overview
Problem
Existing cooling and lubrication systems for rolls in rolling mills face challenges in maintaining consistent spray patterns and alignment with roll wear, requiring complex and space-consuming actuating mechanisms that are not suitable for both upper and lower rolls, leading to suboptimal cooling and rolling quality.
Innovation Solution
A method and device utilizing a combination of pivoting and translational movements of the nozzle bar, driven by a single actuating gear, to maintain the alignment of the spray axis with the roll axis, allowing for synchronous movement of both upper and lower nozzle bars, thus ensuring consistent spray patterns and efficient cooling across both rolls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a complex actuating mechanism with two independent adjusting cylinders is used to maintain constant distance between nozzle bar and roll surface, then the spray pattern consistency is improved, but the device complexity and space requirements increase significantly
Solution Approach 1:
The patent combines two independent adjusting cylinders and their respective adjusting levers into a single actuating cylinder that simultaneously controls both nozzle bars through a coupling mechanism. This merging reduces the number of components while maintaining the ability to independently adjust each nozzle bar's position relative to its roll, thereby preserving spray pattern consistency while reducing device complexity
Solution Approach 2:
The single actuating cylinder is designed to perform multiple functions: it simultaneously adjusts the position of both upper and lower nozzle bars, and can do so independently for each side. The coupling mechanism allows one cylinder to universally control both adjusting mechanisms, reducing component count while maintaining adjustment capabilities
2Measurement precision
If a complex kinematic arrangement with two adjusting cylinders is installed, then the nozzle bar positioning precision is improved, but the installation space requirements increase
Solution Approach 1:
The patent merges two separate adjusting cylinder assemblies into a single compact unit that serves both nozzle bars. The coupling mechanism allows the single actuating cylinder to control both adjusting levers simultaneously, significantly reducing the space required for installation while maintaining positioning precision through the articulated linkage system
3Device complexity
If the nozzle bar is designed with simple cooling device and limited movement options, then the device complexity is reduced, but the adaptability to roll wear and cooling effectiveness deteriorates
Solution Approach 1:
The patent implements a dynamic adjusting mechanism that allows the nozzle bar to automatically adapt its position in response to roll wear. The actuating cylinder with coupling mechanism enables continuous adjustment of the nozzle bar's distance from the roll surface, maintaining optimal cooling effectiveness throughout the roll's service life without requiring complex multi-cylinder systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables precise alignment and consistent spray patterns on both rolls, maintaining effective cooling and lubrication regardless of roll diameter changes due to wear, while reducing the complexity and space requirements of the actuating mechanism, thereby improving rolling quality and efficiency.
Implementation Method 1
at least one row arrangement of spray nozzles (24) for applying a fluid to a roll surface (52) of the roll (12, 13)
Data Source
Figure 1
Figure 2~4
Figure 3~5
AI summary
Method for cooling and/or lubricating at least one roll (12, 13) arranged in a rolling stand (10), in which at least one nozzle bar (19, 20) associated with the roll, which is arranged with at least one row of spray nozzles for applying a fluid to a roll surface (52) of the roll parallel to a roll axis (55), is changed in its axial distance to the roll by means of at least one actuating device (50, 51) arranged on the rolling stand, such that the distance between the spray nozzles and the roll surface remains constant as the roll diameter decreases due to wear of the roll, wherein the actuating device causes a movement of the nozzle bar which is composed of a linear translational movement of the nozzle bar in the direction of the roll and a pivoting movement about a longitudinal axis of the nozzle bar in the opposite direction.