Cutting Roller Axial Clamping for Format Exchange
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Solution Overview
Problem
Existing cutting rollers have a high mass weight and require time-consuming and cumbersome processes for exchanging format parts, which hinders quick adaptation to different label formats and sizes.
Innovation Solution
A cutting roller design featuring two complementary, hollow-drum-like format parts with axial clamping and a clamping device that allows for quick and effortless exchange, reducing mass and simplifying the process through a clamping mechanism with a handle for easier installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If format parts are fastened by radial screwing to a solid cylinder carrier, then the cutting roller achieves structural stability, but the mass weight increases and format part replacement becomes time-consuming
Solution Approach 1:
The cutting roller is divided into a hollow-drum-like carrier and separate format parts that can be independently exchanged. The format parts are segmented modules that attach to the carrier without requiring a solid cylindrical structure, reducing overall mass while maintaining structural integrity through modular assembly.
Solution Approach 2:
The fastening system transitions from fixed radial screwing to a dynamic quick-change mechanism using clamping levers and axial clamping. This allows the format parts to be rapidly attached and detached without time-consuming screw operations, enabling flexible adaptation to different label formats.
2Reliability
If radial screwing is used to fasten format parts, then secure attachment is achieved, but the replacement process becomes cumbersome and time-consuming
Solution Approach 1:
The static radial screwing mechanism is replaced with a dynamic axial clamping system using clamping levers that can be quickly actuated and released. The clamping levers engage with fixing pins in a snap-action manner, providing secure attachment during operation while enabling rapid replacement when needed.
Solution Approach 2:
The fastening function is extracted from the format parts themselves and implemented through separate clamping elements (clamping levers and fixing pins) that provide the attachment mechanism. This separation allows the format parts to be designed solely for their cutting function while the clamping system handles the attachment/security requirement.
3Strength
If a solid cylinder design is used for the cutting roller, then structural strength is maintained, but the mass weight becomes excessively high
Solution Approach 1:
The solid cylinder is segmented into a hollow-drum-like carrier structure with separate format parts. This segmentation allows the removal of unnecessary material from the carrier while maintaining structural strength through the hollow drum design and the attachment of format parts that provide the required cutting surface and vacuum openings.
Solution Approach 2:
The excess material from the solid cylinder is extracted to create a hollow-drum-like carrier. The essential structural function is retained through the hollow drum geometry and the attachment mechanism for format parts, while removing unnecessary mass that would increase the roller's weight without adding functional value.
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
Enables rapid and efficient exchange of format parts, reducing operational time and effort while maintaining the ability to process labels of varying sizes and formats, thus improving the adaptability and efficiency of the cutting roller.
Implementation Method 1
which is initially held with slip on the peripheral surface 11, specifically with negative pressure or vacuum
Data Source
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AI summary
In the case of a transporting roller for labels (3) for use in a labelling unit (1), having a circumferential surface (11) which is formed by at least two exchangeable format parts (15, 16) on a rotatably driveable shaft (19) and has vacuum openings (17) provided on it for fixing the labels, or a label material forming the labels, the format parts are retained by an axial clamping-in action between a carrying element (24), which is provided on the shaft, and at least one clamping or bracing element (26), which is provided on the shaft.