Rotating Stripper With Tapering Edge For Roller Stripping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stripping devices for sheet-shaped objects from rollers, particularly in foil winding repositories, face challenges due to varying roller radii and irregular surfaces, leading to inconsistent scraper contact and failure to remove adherent objects.
Innovation Solution
A stripping device with a rotatably mounted stripper featuring a tapering stripping portion and a support portion, ensuring two constant contact points with the roller, maintaining a consistent angle and pressure despite radius changes and surface irregularities, using a bearing arrangement and optional gimbal or carriage with spring elements for optimal contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-point scraper is used to strip sheet-shaped objects from the roller, then the device structure is simple, but the stripping reliability deteriorates due to varying roller radius and surface irregularities causing inconsistent contact
Solution Approach 1:
The stripper is divided into two distinct portions: a stripping portion with a tapering edge for contacting the roller surface, and a support portion that provides additional contact points. This segmentation allows the device to maintain reliable stripping contact while managing structural complexity through functional division.
Solution Approach 2:
The stripper is designed to be rotatably mounted, allowing its contact parameters (angle and pressure distribution) to change dynamically in response to roller radius variations and surface irregularities. This enables the stripper to self-adjust and maintain effective contact without requiring complex active control mechanisms.
2Reliability
If the scraper is pressed hard against the roller to ensure contact, then contact reliability improves, but the risk of losing contact due to surface irregularities increases
Solution Approach 1:
By dividing the stripper into stripping and support portions, the contact force is distributed across multiple points rather than concentrated at a single point. This distribution reduces the harmful effect of surface irregularities causing complete contact loss while maintaining sufficient pressure for effective stripping.
Solution Approach 2:
The support portion acts as a cushioning element that compensates for surface irregularities before they can cause the stripping portion to lose contact. The rotatable mounting allows the stripper to pivot slightly, absorbing the impact of irregularities and maintaining continuous contact.
3Reliability
If the scraper angle is adjusted to match varying roller radii, then stripping effectiveness improves, but the device complexity increases
Solution Approach 1:
The stripper is mounted rotatably, making it a dynamic element that can automatically adjust its contact angle in response to roller radius changes and surface irregularities. This eliminates the need for complex active angle adjustment mechanisms while maintaining stripping effectiveness through passive adaptation.
Solution Approach 2:
The rotatable mounting enables the stripper to self-adjust its orientation and contact points automatically based on the roller's actual geometry and surface conditions. This self-adjusting capability achieves effective stripping without requiring external control systems or complex adjustment mechanisms.
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 reliable stripping of sheet-shaped objects by maintaining consistent contact and adjusting for surface irregularities, preventing objects from adhering to the roller, even with varying radii and uneven surfaces.
Implementation Method 1
the stripper is pressed against the roller with prestressing during operation
Implementation Method 2
the at least one stripper can be connected to the carriage via such a spring element
Data Source
AI summary
A stripping device for stripping sheet-shaped objects from a roller includes at least one stripper. The stripper is mounted rotatably about a bearing and includes stripping portion configured to be tapering to a point and a support portion which is different from the stripping portion. The stripping portion and the support portion are arranged relative to each other and the stripper is mounted such that, when the stripper is pressed against the roller with prestressing during operation, the stripper has two mutually spaced apart contact points with the roller, which contact points are defined by the stripping portion and the support portion of the stripper.