Roll Removal Device Angular Axis Divergence
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Solution Overview
Problem
Existing roll removal devices often result in the end faces of rolls getting caught, leading to potential damage to the winding material due to straight unrolling, which is not guaranteed.
Innovation Solution
The roll axes of adjacent rollers are angled to less than 180 degrees, allowing them to roll apart and avoid contact, with a displacement device using a convex line and tilting mechanism to facilitate this, and optionally incorporating Teflon surfaces for reduced adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rolls are allowed to roll freely during transfer, then the transfer process is simple and efficient, but the end faces of the rolls can get caught causing damage to the winding material
Solution Approach 1:
The roll axes are pre-positioned at an angle of less than 180 degrees before the rolling transfer begins. This preliminary angular arrangement ensures that as the rolls transfer and rotate, their end faces naturally diverge rather than remaining parallel, preventing them from getting caught against each other while maintaining smooth rolling motion throughout the transfer process.
2Stability of the object's composition
If the roll axes of adjacent rolls are kept at 180 degrees, then the rolls remain parallel and stable, but the end faces can get caught during transfer causing damage
Solution Approach 1:
The invention deliberately introduces asymmetry by positioning the roll axes at an angle of less than 180 degrees rather than maintaining perfect parallel alignment at 180 degrees. This asymmetric angular arrangement creates a diverging path for the roll end faces during transfer, eliminating the harmful catching effect while the rolls remain stable and controlled throughout the process.
3Productivity
If a displacement device with support surface is used to pull rolls off the winding shaft, then the rolls can be removed efficiently, but friction and supporting elements are required which complic the device
Solution Approach 1:
The rolls utilize their own rotational motion and the angular positioning of their axes to achieve self-divergence during transfer. The system leverages the natural rolling behavior of the rolls combined with the pre-set angular arrangement, eliminating the need for additional active control mechanisms or complex supporting elements to prevent end-face contact.
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 solution effectively prevents damage to the winding material by ensuring the rolls diverge and roll freely without tilting, ensuring safe and efficient unrolling.
Implementation Method 1
at least one of the support surfaces has a Teflon surface
Implementation Method 2
The roll rolls around this roll axis when its peripheral surface rolls on a base in a rolling direction
Data Source
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AI summary
The invention describes a roll-removal device by means of which a plurality of rolls which have been wound to completion are transported away from a winding shaft, * having a displacement device for displacing the rolls relative to the winding shaft, in order to withdraw the rolls from the winding shaft, * having a receiving device for receiving the rolls, and * having a transfer device for transferring the rolls from the displacement device to the receiving device, wherein the rolls can be rolled freely at least in certain regions, the rolls rolling about their rolling axes. By means of this device for changing the position of the roll axes, the roll axes of two adjacent rolls can be moved to an angle of less than 180 degrees in relation to one another.