Calender Roller Pair for Cotton Roll Quality
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Solution Overview
Problem
Existing cotton roll production devices often result in irregular or matted cotton wraps due to contact between the cotton sheet and the rotating belt, leading to reduced quality and increased hairiness, especially at the side ends.
Innovation Solution
A device featuring a pair of calender rollers arranged between the deflection rollers to guide the cotton web, compressing and tensioning it to prevent contact with the rotating belt, combined with a cotton guide to ensure smooth entry into the winding point, maintaining the quality of the cotton roll across varying speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cotton web is guided directly to the core without calender rollers, then the device structure is simpler, but the cotton web contacts the circulating belt causing quality degradation and hairiness
Solution Approach 1:
A pair of calender rollers is introduced as an intermediary device between the cotton web feed and the core. These rollers guide the cotton web through a clamping line that prevents contact with the circulating belt, thereby eliminating the harmful contact while maintaining a manageable device structure
Solution Approach 2:
The guiding function is segmented into multiple components: the calender rollers form a clamping line, and a separate cotton guide is positioned between the clamping line and the winding point. This segmentation allows each component to perform its specific function optimally while working together to prevent belt contact
2Adaptability or versatility
If the cotton web free length to the winding point is longer, then the device can accommodate larger core diameters, but the cotton web quality deteriorates due to increased contact risk and instability
Solution Approach 1:
The cotton guide acts as an intermediary element that extends the guidance function beyond the clamping line. This allows the cotton web to be guided smoothly over a longer path without contacting the belt, enabling accommodation of larger core diameters while maintaining quality
Solution Approach 2:
The cotton guide position is designed to be adjustable or adaptable, allowing the system to dynamically accommodate varying core diameters. The guide ensures the cotton web enters the winding point smoothly regardless of the core size, maintaining quality across different production scenarios
3Manufacturing precision
If the cotton web is compressed strongly by calender rollers, then air is expelled and web compactness improves, but the device complexity and tension control difficulty increase
Solution Approach 1:
The calender rollers are pressed against each other to form a self-regulating clamping line. The compression force is inherently controlled by the roller pressurization mechanism, which automatically maintains consistent web compactness and air expulsion without requiring complex external tension control 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
The solution ensures a high-quality cotton roll with reduced hairiness and improved uniformity by avoiding belt contact and maintaining tension, allowing for higher productivity and better combing results.
Implementation Method 1
The calender roller pair serves to compress the cotton web, thereby largely expelling the air contained within the fiber structure of the cotton web, thus forming a compact web
Implementation Method 2
The first and second calender rollers of the pair are pressed against each other. The clamping line is formed at the point where the calender rollers would touch if there were no cotton web present
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a device for producing a cotton roll (5) from a cotton web (1) with a circulating endless belt (10), wherein a core (6) for receiving the cotton roll (5) is arranged in a loop (21) of the belt (10) formed between a first rotatably mounted guide roller (12) and a second rotatably mounted guide roller (15), the loop increasing in size with an increasing cotton roll diameter (7). The first guide roller (12) has a first guide roller axis (13) and a first guide roller surface (14), and the second guide roller (15) has a second guide roller axis (16) and a second guide roller surface (17). To guide the cotton web (1) a pair of calender rollers with a first calender roller (23) and a second calender roller (24) is arranged between the deflection rollers (12, 15), wherein the calender rollers (23, 24) form a clamping line (25) between them.