Pocket Sheet Roller With Aligned Slots for Consistent Filter Geometry
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Solution Overview
Problem
Existing devices for rolling cigarettes and their filters are not practical for users and do not allow for the creation of a sheet of paper or cardboard with improved filtering capacity, especially when used for roll-your-own cigarettes.
Innovation Solution
A compact, pocket-sized rolling device and method that aligns receiving slots along a vertical plane to facilitate the rolling of paper or cardboard into a predetermined diameter, incorporating a rotating element and sliding element to ensure consistent geometry and improved filtration capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional manual winding method is used to create filter, then the device complexity is low, but the manufacturing precision and consistency of the rolled paper diameter are poor
Solution Approach 1:
The rolling device employs nested concentric mandrels with different diameters (first mandrel for filter rolling, second mandrel for cigarette rolling) where smaller components are placed inside larger ones. This nesting approach enables multiple rolling functions within a compact structure, achieving consistent diameter control through precise mandrel geometry while minimizing overall device complexity.
Solution Approach 2:
The device is segmented into distinct functional modules: a main housing containing the mandrels, a sliding element with receiving slots for paper insertion, and a rotating element for actuation. This segmentation allows each component to perform its specific function efficiently while maintaining manufacturability and assembly simplicity.
2Ease of operation
If a pocket-sized rolling device is designed, then the device portability is improved, but the functionality for creating high-quality filtered sheets is limited
Solution Approach 1:
The rolling device is designed with universal functionality to perform multiple operations: rolling filter paper using the first mandrel, rolling cigarette paper using the second mandrel, and creating both cylindrical and conical filter shapes. The sliding element with aligned receiving slots accommodates different paper types, enabling a single compact device to replace multiple specialized tools.
Solution Approach 2:
The device uses nested concentric mandrels where the first mandrel (for filter rolling) and second mandrel (for cigarette rolling) are positioned coaxially within the main housing. This nesting enables multiple rolling functions in a compact pocket-sized form factor, maintaining versatility while ensuring portability.
3Manufacturing precision
If multiple concentric mandrels are used for rolling, then the manufacturing precision of rolled paper geometry is improved, but the device complexity increases
Solution Approach 1:
The device employs nested concentric mandrels with different diameters positioned one inside another within the main housing. The first mandrel serves as the core for filter rolling, while the second mandrel provides support and enables cigarette rolling. This nesting achieves precise geometric control through fixed mandrel dimensions while minimizing the number of separate components.
Solution Approach 2:
The sliding element combines multiple receiving slots (first receiving slot for filter paper, second receiving slot for cigarette paper) into a single integrated component that aligns with both mandrels. This merging of functions into unified components reduces overall device complexity while maintaining manufacturing precision.
Data Source
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AI summary
One aspect of the invention relates to a sheet rolling device (10) comprising: - a main housing (12) extending between a front face (12) and a rear face (14) and including a cover (18) having a first receiving slot (24), - a sliding element (48) mounted for translational movement within the main housing, from the front face of the housing, and including a shell (50) having a second receiving slot (60), - a rotating element (86) mounted for rotational movement and including a shaft (88) housed inside the main housing, from the rear face of the housing, the shaft having a third open receiving slot (94), and - a stopping surface. In the closed position of the rolling device, the first and second slots are aligned along the same vertical plane P.