Plant Pot Cylindrical Stacking Edge for Stability
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Solution Overview
Problem
Existing plant pots struggle to form stable, high stacks that can be easily unstacked, particularly by machine, due to inadequate supporting structures and stacking mechanisms.
Innovation Solution
The plant pot design incorporates a cylindrical section below the stacking edge, with a height equal to or less than the stacking distance, and features radially projecting ribs for centering and guidance, enhancing stability and ease of unstacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a plant pot is designed with a simple rim and conical wall structure, then the manufacturing process is simple and demouldability is good, but the stacking stability is insufficient and stack crush resistance is low
Solution Approach 1:
The pot wall is segmented into distinct functional sections: an upper conical section for demouldability, a cylindrical guiding section with ribs for stacking stability, and a lower conical section for structural integrity. This segmentation allows each section to optimize its specific function while maintaining overall structural coherence.
Solution Approach 2:
Different sections of the pot wall are given different geometric qualities tailored to their specific functions: the upper section has a steep conical angle for easy demoulding, the middle cylindrical section has vertical ribs for guidance and centering, and the lower section has a gentler conical angle for structural support. This local differentiation resolves the contradiction between simplicity and stability.
2Productivity
If the stacking distance is reduced to form higher stacks, then transport efficiency increases, but the risk of stack crushing and instability increases
Solution Approach 1:
The cylindrical section with vertical ribs enables the pots to self-center and self-guide during stacking through their own geometric features, without requiring external guiding mechanisms or complex stacking procedures. This self-service capability ensures reliable stacking even at reduced distances, maintaining stack integrity while improving transport efficiency.
3Productivity
If machine unstacking is implemented for efficiency, then productivity increases, but the requirement for precise geometric features for smooth unstacking increases complexity
Solution Approach 1:
The vertical ribs on the cylindrical section act as intermediary guiding elements that facilitate smooth machine unstacking. These ribs provide a controlled interface between stacked pots, allowing mechanical systems to easily grip and separate pots without requiring extremely tight tolerances on all surfaces. The ribs serve as the primary interaction point for unstacking mechanisms.
Data Source
Figure 1~2
Figure 3~4
AI summary
A plant pot (1) made of thin-walled plastic is provided with a generally conical pot wall (3) and a base (2) which is profiled and has holes for stiffening and drainage, with an upper flange-shaped rim (5), with a substantially counter-conical stacking rim (6) formed into the pot wall below the rim (5) to form a stacking edge (7), wherein a stacking distance (d) is defined between the rim (5) and the stacking edge (7). In order to be able to form more stable, higher stacks which can also be more easily unstacked, in particular by machine, a cylindrical section (8) is formed into the pot wall below the stacking rim (6), the height (h) of which is less than or equal to the stacking distance (d).