Seed Meter Singulator with Biasing Spring
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Solution Overview
Problem
Current seeding machines face challenges in accurately singulating individual seeds from a bulk seed pool for efficient delivery during planting, as existing technologies often result in seed loss and inefficiency due to excess seeds not being properly managed.
Innovation Solution
A seed meter with a rotatable disk and a singulator mechanism, where a biasing spring retains the singulator against the disk to remove excess seeds, ensuring precise seed delivery by controlling the radial position of the singulator relative to the seed openings on the disk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a singulator mechanism is used to remove excess seeds from seed openings, then seed singulation efficiency is improved, but device complexity increases due to additional components like biasing springs and adjustable radial position mechanisms
Solution Approach 1:
The singulator is designed with adjustable radial position capability, allowing it to move dynamically relative to the seed meter disk. This dynamic positioning enables the singulator to optimally remove excess seeds from seed openings while maintaining adaptability for different seed types and planting conditions, thereby improving singulation efficiency without requiring an overly complex fixed structure
Solution Approach 2:
The biasing spring mechanism allows the singulator's radial position to be adjusted and maintained at optimal settings. By changing the radial position parameter of the singulator relative to the seed meter disk, the system achieves effective excess seed removal while using a relatively simple spring-based adjustment mechanism rather than a complex motorized system
2Measurement precision
If the singulator is positioned close to the seed meter disk to effectively remove excess seeds, then seed delivery precision is improved, but seed loss increases due to potential damage to seeds during the removal process
Solution Approach 1:
The singulator features a localized cutting edge or removal mechanism that precisely targets only the excess seeds protruding from the seed openings. This localized action allows the singulator to be positioned close to the seed meter disk for precise seed delivery control while minimizing contact with and damage to the actual seeds that need to be planted
Solution Approach 2:
Instead of trying to prevent excess seeds from entering the seed openings in the first place, the system inverts the approach by allowing excess seeds to enter and then removing them at the point of delivery. This inversion enables precise control of seed placement while using a simple removal mechanism that minimizes seed damage
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
The solution enhances seed singulation efficiency by effectively removing excess seeds, ensuring each seed opening corresponds to a single seed, thereby improving planting accuracy and reducing seed loss.
Implementation Method 1
A biasing spring is positioned to exert an axially-oriented bias force pressing the singulator against the first side of the seed meter disk
Data Source
AI summary
A seed meter includes a meter housing having a first chamber for seeds and a second chamber. A seed disk is rotatably supported within the meter housing and has a first side and a second side. The first side is exposed to the first chamber and the second side is exposed to the second chamber. The seed disk includes a plurality of seed openings that extend between the first and second sides at a predetermined radial position. A singulator is positioned against the first side of the seed disk and has at least one structure for removing excess seeds from the seed openings as the seed meter disk rotates relative to the singulator. A radial position of the singulator is controlled at least in part by a hub portion of the seed meter. A biasing spring is positioned to exert an axially-oriented bias force pressing the singulator against the first side of the seed meter disk.