Slit Band Sheet Tension Belts With Cooling Rolls for Heat Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing slit band sheet coiling-tension applying devices face issues with frictional heat generation, inadequate cooling efficiency, and structural difficulties in cooling pulleys, leading to belt damage and operational challenges in metal band sheet processing lines.
Innovation Solution
A slit band sheet coiling-tension applying device featuring freely rotatable cylindrical cooling rolls with coolable interiors, belts with different friction coefficients, and adjustable pressing portions to efficiently remove heat and maintain optimal tension, incorporating a double cylindrical structure for enhanced cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-belt type tension system is used to impart coiling tension, then uniform tension can be applied and scratches are reduced, but frictional heat is generated causing belt damage
Solution Approach 1:
The patent converts the harmful frictional heat into a beneficial cooling process by introducing cooling rolls with internal cooling channels. The cooling water flows through these channels to actively remove heat from the belts, transforming the heat generation problem into a controlled thermal management solution that maintains belt durability while preventing overheating damage
Solution Approach 2:
The cooling rolls serve as an intermediary element between the frictional heat source (belts) and the cooling medium (water). These rolls with internal channels act as a thermal interface, efficiently transferring heat from the belts to the circulating cooling water, thereby protecting the belts from thermal damage while maintaining the tensioning function
2Temperature
If cooling water is circulated through pulleys, then heat removal is possible, but structural difficulties arise in cooling the pulleys effectively
Solution Approach 1:
The patent extracts the cooling function from the pulley structure itself and places it in separate cooling rolls that contact the belts. Instead of complicating the pulley design with internal cooling channels, the cooling function is taken out and implemented through dedicated cooling rolls with internal channels, simplifying the overall structure while improving cooling efficiency
Solution Approach 2:
The cooling system is segmented into separate functional components: the tensioning belts, the cooling rolls with internal channels, and the circulating water system. This segmentation allows each component to be optimized independently - the belts for tensioning, the rolls for efficient heat transfer, and the water system for heat removal - avoiding the structural complexity of integrated cooling pulleys
3Reliability
If belts with different friction coefficients are used, then uniform tension is achieved and slippage is reduced, but the device complexity increases
Solution Approach 1:
The patent applies local quality by using belts with different friction coefficients in specific locations where needed. The outer surface of the belts has a higher friction coefficient to prevent slippage with the metal sheets, while the inner surface has a lower friction coefficient to reduce friction with the cooling rolls. This localized differentiation of friction properties achieves uniform tension without requiring complete structural redesign
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 device improves durability and convenience by effectively cooling the belts, preventing belt damage and ensuring continuous operation in metal band sheet processing, while maintaining optimal coiling tension and reducing slippage marks.
Implementation Method 1
a first cooling roll configured to be freely rotatable while having a cylindrical shape and having a coolable inside
Implementation Method 2
the outer side of the belt is made of a material having a large friction coefficient and the inner side of the belt is made of a material having a small friction coefficient. When the band sheet is brought into contact with the outer surface of the belt, the friction coefficient on the outer side of the belt is large, so that when winding of the band sheet is started by the winder, the belt moves with the band sheet without slipping
Implementation Method 3
a first pressing portion configured to be brought into contact with the side of the one or more first belts with the smaller friction coefficient by a predetermined length
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A coiling tension applying device (1) is provided with: an upper structure (3) that is disposed on the upper side of a band sheet (2) which has been passed through a slitter line and slitted; and a lower structure (4) that is disposed on the lower side of the band sheet (2). The upper structure (3) includes two cooling rolls (6) over which an upper belt (5) is stretched, and an upper pressing part (7) that is disposed between the cooling rolls (6). Further, the lower structure (4) includes two cooling roller (9) over which a lower belt (8) is stretched, and a lower pressing part (10) that is disposed between the cooling rolls (9).