Reference Surface Alignment for Tobacco Rod Machines
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Solution Overview
Problem
Existing machines for producing rod-shaped tobacco products face complexity and time-consuming format changes due to tight tolerances, requiring intricate realignment of functional assemblies like glue nozzles, seam heaters, and format belts for different product diameters.
Innovation Solution
The introduction of a reference surface system that automatically aligns functional assemblies by encoding their positions within the format set, allowing for quick format changes without manual adjustment of these assemblies, using a chain reference system and spring-loaded mechanisms for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual realignment of functional assemblies is performed for format changes, then positioning accuracy is improved, but adjustment time increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring reference surfaces on format sets and format belts with encoded position information. Before format changes occur, these reference surfaces are already positioned and oriented correctly, allowing functional assemblies to be quickly realigned simply by contacting the reference surfaces rather than requiring complex manual measurements and adjustments during the format change process
Solution Approach 2:
The patent uses reference surfaces as intermediaries between the format set/format belt and functional assemblies. These reference surfaces encode position information and serve as mediators that automatically guide the positioning of functional assemblies during format changes, eliminating the need for direct manual measurement and alignment between components
2Manufacturing precision
If complex mounting frames with adjusting screws are used for glue nozzles, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the alignment function from complex mounting frames and adjusting screws, isolating it into dedicated reference surfaces with encoded position information. This separates the positioning function from the structural mounting components, allowing simple mounting frames to be used while maintaining high positioning precision through the encoded reference surfaces
Solution Approach 2:
The patent replaces complex mechanical adjustment systems (mounting frames with adjusting screws) with an encoded reference surface system. Instead of using mechanical components to achieve positioning, the system uses pre-configured reference surfaces with embedded position information that guide alignment, reducing mechanical complexity while maintaining precision
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 simplifies and accelerates format changes, reduces operational downtime, and allows for the production of different product formats using identical functional modules, lowering maintenance and stockholding costs, while ensuring high accuracy and quality.
Implementation Method 1
A scraper is provided at the outlet of the format assembly. This scraper is angled towards the format belt with a small gap and removes any tobacco residue or other particles adhering to the belt
Implementation Method 2
A seam heater is provided downstream of the gluing chamber, which is directed at the glue seam and cures the glue by heating it
Data Source
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AI summary
The machine has a propelled garniture tape (20) for transporting each continuous strand of rod-shaped products. A garniture has a basic garniture (1) on which the garniture tape is guided in groove with decreasing radius, and garniture top portions. The garniture has reference surface (A) which has a direction and arrangement such that functional modules (I) are positioned in preset orientation and arrangement to the strand and/or to the garniture by abutment against the reference surface.