Roller for guiding and/or width stretching of a running material web
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Solution Overview
Problem
Existing rollers for guiding and width stretching of material webs lack functionality, particularly under restricted space conditions, and fail to effectively manage material web edges and electrostatic charging.
Innovation Solution
A roller design featuring a supporting body with axially displaceable battens and undercut grooves for functional components, which can include ribs, brushes, and sliding surfaces, to enhance gripping, spreading, and electrostatic discharge capabilities, ensuring secure hold and edge management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If H-shaped elastic profiles are formed in grooves of the roller body to grip the material web, then the material web can be stretched in width, but the roller lacks additional functionality for edge management and electrostatic discharge under restricted space conditions
Solution Approach 1:
The roller is designed to perform multiple functions: width stretching through elastic profiles, edge management through functional components with ribs or brushes, and electrostatic discharge through conductive elements. This multi-functionality approach allows a single device to handle various material web issues without requiring separate dedicated devices, thereby improving versatility while maintaining structural efficiency
Solution Approach 2:
Functional components are nested within undercut grooves formed in the roller body. The undercut grooves create recesses that accommodate additional elements such as ribs, brushes, or conductive components within the existing roller structure. This nesting approach allows additional functionality to be integrated without significantly increasing the overall device complexity or external dimensions
2Adaptability or versatility
If functional components are added to the roller to improve edge management and electrostatic discharge, then the roller's capability increases, but the space available for component arrangement is limited
Solution Approach 1:
The roller design utilizes the radial dimension by forming undercut grooves that extend radially into the roller body. This allows functional components to be positioned in the radial direction rather than only in the axial or circumferential directions, effectively utilizing three-dimensional space within the roller structure to accommodate multiple functional elements without increasing the roller's external dimensions
Solution Approach 2:
Functional components are nested within undercut grooves formed in the roller body. The undercut grooves create recesses that accommodate additional elements such as ribs, brushes, or conductive components within the existing roller structure. This nesting approach allows additional functionality to be integrated without significantly increasing the overall device complexity or external dimensions
3Ease of operation
If battens are made axially displaceable to grip the material web, then width stretching is enabled, but secure holding of additional functional components becomes difficult under restricted space conditions
Solution Approach 1:
Undercut grooves are pre-formed in the roller body at specific locations where functional components need to be mounted. These grooves create mechanical interlocking features that securely hold functional components in predetermined positions. The preliminary preparation of these mounting features ensures that additional components are securely attached before the roller begins operation, preventing displacement during width stretching operations
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 roller achieves improved functionality by securely gripping and spreading the material web, preventing edge rolling and electrostatic interference, while allowing for easy assembly and space-efficient design, even under restricted conditions.
Implementation Method 1
the at least one undercut groove has at least one threaded driving channel. Thus, the at least one functional component can be easily screwed to the roller
Implementation Method 2
said functional component has ribs which are inclined at an acute angle to a material web running direction which grip the material web
Implementation Method 3
the at least one brush can also grip the material web. In this case, it is important for several functions that the at least one brush can also grip the material web
Data Source
AI summary
A roller (1) is used for guiding and/or width stretching of a running material web (2). The roller (1) has a supporting body (3), on the outside of which receptacles (4) for axially displaceably held battens (5) are provided. These grasp the material web (2). In order to improve the functionality of this roller (1), at least one undercut groove (6) is formed on the supporting body (3) between at least two of the battens (5). This undercut groove (6) can receive at least one functional component (7).