Embossing Unit Layout for Roller Change Without Web Interruption
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Solution Overview
Problem
Existing embossing-gluing units require the interruption of paper ply continuity and disconnection of passage belts to replace engraved rollers, complicating the replacement process.
Innovation Solution
An embossing unit design with a fixed and mobile structure allows for the removable mounting of engraved rollers, enabling their replacement without interrupting paper ply continuity or disconnecting belts, by using a mobile structure to create a space for extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If engraved rollers are mounted on a fixed structure in conventional embossing units, then the structure provides stable support for embossing operations, but replacing the engraved rollers requires interrupting paper ply continuity and disconnecting passage belts
Solution Approach 1:
The embossing unit is divided into a fixed structure and a mobile structure. The engraved roller to be replaced is mounted on the fixed structure, while the counter-roller and gluing assembly are mounted on the mobile structure. This segmentation allows the mobile structure to be moved away, creating extraction space for the engraved roller without disrupting the paper ply continuity or requiring disconnection of passage belts.
Solution Approach 2:
The counter-roller and gluing assembly are mounted on a mobile structure that can be moved to and from the fixed structure. This dynamic configuration enables the mobile structure to be repositioned during roller replacement operations, providing the necessary space to extract and replace engraved rollers while maintaining continuous paper production.
2Productivity
If the mobile structure is moved away from the fixed structure to allow engraved roller extraction, then roller replacement becomes possible without interrupting paper continuity, but the structural configuration becomes more complex
Solution Approach 1:
The embossing unit is segmented into fixed and mobile portions. The fixed structure holds the engraved roller, while the mobile structure carries the counter-roller and gluing assembly. This segmentation enables the mobile structure to be independently repositioned, creating extraction space without stopping paper production.
Solution Approach 2:
The mobile structure acts as an intermediary element between the fixed structure and the paper ply. By moving this intermediary structure away during roller replacement, the system maintains paper continuity while enabling maintenance operations on the fixed structure.
Data Source
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AI summary
Embossing unit comprising a fixed structure (1) and a mobile structure (2) configured to be moved to and from the fixed structure (1), a first embossing assembly (LA), a second embossing assembly (UA) and a gluing assembly (GA), wherein the first embossing assembly (LA) comprises a first engraved steel roller (3) and a respective rubber counter-roller (4), wherein the second embossing assembly (UA) comprises a second steel engraved roller (5) and a respective rubber counter-roller (6), and wherein the gluing assembly (GA) is mounted on the mobile structure (2). The first embossing assembly (LA) and the engraved roller (5) of the second embossing assembly (UA) are mounted on the fixed structure (1) while the rubber counter-roller (6) of the second embossing assembly (UA) is mounted on the mobile structure above the gluing unit (GA).