Undercovering of a mangle roller
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Solution Overview
Problem
Existing mangle roller underwindings lack optimal material properties and durability, with known solutions not clearly specifying materials for springs and webbing, leading to potential issues with thermal expansion and resistance to moisture and chemical additives.
Innovation Solution
The underwinding features springs made of stainless steel and webbing made of unalloyed steel, with the springs being zinc-plated to prevent rust, and connected to the webbing using rivets or spot welding for durable and resistant construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If springs are made of unalloyed steel to match thermal expansion with the mangle roller, then thermal expansion compatibility is improved, but resistance to moisture and chemical additives deteriorates
Solution Approach 1:
The patent applies different material qualities to different components: unalloyed steel for the webbing (prioritizing thermal expansion compatibility) and stainless steel for the springs (prioritizing corrosion resistance). This local differentiation resolves the contradiction by allowing each component to have optimal material properties for its specific functional requirements.
Solution Approach 2:
The underwinding system uses a composite material structure combining unalloyed steel webbing with stainless steel springs. This composite approach allows the system to simultaneously achieve thermal expansion compatibility through the unalloyed steel webbing and corrosion resistance through the stainless steel springs, resolving the material property contradiction.
2Reliability
If springs are made of stainless steel to enhance resilience and resistance to moisture, then reliability is improved, but thermal expansion compatibility with the mangle roller deteriorates
Solution Approach 1:
The patent assigns different material qualities to different components: stainless steel for the springs (prioritizing corrosion resistance) and unalloyed steel for the webbing (prioritizing thermal expansion compatibility). This local differentiation resolves the contradiction by allowing each component to have optimal material properties for its specific functional requirements.
3Ease of manufacture
If rivets are used to connect springs to webbing for different material compatibility, then ease of manufacture is improved, but connection strength may deteriorate compared to welding
Solution Approach 1:
The patent uses rivets as an intermediary connection element between the stainless steel springs and unalloyed steel webbing. Rivets serve as a mediator that accommodates the different material properties of the two components, providing a practical connection method that is easier to manufacture than welding while maintaining adequate connection strength for the application.
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 configuration provides optimal material properties, ensuring the mangle roller's thermal expansion matches the webbing, enhances resistance to moisture and chemical additives, and results in a longer service life with easy-to-manufacture connections.
Implementation Method 1
the webbing is made of galvanized, unalloyed steel
Implementation Method 2
springs made of stainless steel are particularly resistant
Implementation Method 3
when the mangle roller is hot, the thermal expansion of the webbing corresponds to that of the mangle roller
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The method involves forming a spring (15) from a blank of spring steel by punching. A resulting ridge, during the punching of each spring, is partially dismantled by cold deformation. The ridge is dismantled in a border area, particularly at the entire peripheral edge region. Independent claims are also included for the following: (1) an undercovering for a deficiency roller; and (2) a spring for an undercovering of a deficiency roller.