Flexible Metal Strip Rolling with Compact Traction Tension Control
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Solution Overview
Problem
Existing flexible rolling technologies for metallic strip material require complex setups and significant space due to the need for dancer systems and hydraulic adjustments, which complicates integration with other processing devices and limits flexibility in controlling tensile force and rolling force variations.
Innovation Solution
A compact apparatus with controllable traction drive units using motors and endless traction mechanisms, allowing for variable drive power and frictional contact forces to adjust tensile force and rolling thickness dynamically, eliminating the need for dancer systems and enabling integration with other processing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If dancer systems with multiple rollers and hydraulic adjustments are used for flexible rolling, then the rolling process can be performed, but the device complexity and space requirement increase significantly
Solution Approach 1:
The patent extracts and eliminates the dancer system from the flexible rolling process by using a reel with variable winding radius to provide the necessary strip buffering and tension control functions, thereby simplifying the overall device structure while maintaining flexible rolling capability
Solution Approach 2:
The reel serves multiple functions: it acts as both the strip storage device and the tension control mechanism through its variable winding radius, replacing the separate functions previously performed by the dancer system and hydraulic adjustment mechanisms
2Productivity
If dancer systems are used for strip buffering, then the rolling process can accommodate thickness variations, but the space requirement increases
Solution Approach 1:
The patent transitions from a horizontal dancer system occupying significant floor space to a vertical reel configuration where the buffering capability is achieved through the radial dimension of the winding strip, thereby reducing the horizontal space requirement while maintaining the ability to accommodate thickness variations
3Ease of operation
If hydraulic piston-cylinder units are used for chain drive adjustment, then the strip transport can be controlled, but the device complexity and space requirement increase
Solution Approach 1:
The patent replaces the hydraulic piston-cylinder adjustment mechanism with a mechanically simpler system where the reel's variable winding radius provides inherent strip tension control, eliminating the need for complex hydraulic adjustment mechanisms while maintaining effective strip transport control
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
The solution provides a compact, efficient system for flexible rolling with precise control over tensile force and rolling force, reducing space requirements and allowing seamless integration with other processing steps, while maintaining high accuracy in producing variable strip thickness profiles.
Implementation Method 1
a driving force acting from the traction mechanism under frictional contact on the strip material is variably adjustable
Data Source
AI summary
An apparatus for processing metallic strip material comprises a feeder for feeding strip material; a strip drive with at least one controllable traction drive with a carrier and a motor, a drivable traction loop and a press assembly, wherein the power of the motor and the pressing force of the press assembly are variably controllable; a roller assembly for flexible rolling; a measuring device for measuring a physical parameter of a component acting on the strip material; wherein the driving power of the motor is controllable on the basis of the physical parameter measured by the measuring device.