Fruit Singulator Belt Speed Mismatch and Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional singulators for fruit handling equipment face issues with fruit speed mismatch and spacing control, leading to potential damage and improper grading due to speed differences and lack of control over fruit alignment.
Innovation Solution
A singulator design featuring a first pair of V-shaped belts operating at different speeds merging into a second pair of V-shaped belts, with the latter having energy-absorbing proggles, ensuring fruits transfer at the same speed as the fruit supports and maintaining a single file alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the singulator belts operate at different speeds to rotate fruit and form a single row, then fruit alignment is improved, but speed mismatch causes impact damage to fruit
Solution Approach 1:
The singulator is divided into two distinct pairs of belts: the first pair operates at different speeds for fruit rotation and alignment, while the second pair operates at matched speeds for gentle transfer. This segmentation allows each belt pair to perform its specific function without causing impact damage to the fruit.
Solution Approach 2:
The second pair of belts acts as an intermediary between the first pair of belts and the fruit supports. It receives fruit from the first pair and gently transfers it to the fruit supports at matched speeds, mediating the speed transition and preventing direct impact.
2Manufacturing precision
If the singulator speed is reduced to prevent overfeeding of the grader, then spacing control is improved, but impact forces on fruit increase
Solution Approach 1:
The singulator belts are segmented into two pairs with different speed characteristics. The first pair can operate at lower speeds for precise spacing control, while the second pair matches the grader speed, eliminating the need to slow down the entire system and thus reducing impact forces.
Solution Approach 2:
The system changes the speed parameter across different sections of the singulator. The first pair of belts operates at one speed for spacing control, while the second pair operates at a different speed (matching the grader), allowing both spacing precision and low impact forces to be achieved.
3Productivity
If the feed to the V belts is maximised to form a continuous line of fruit, then productivity is improved, but overfeeding of the grader occurs
Solution Approach 1:
The system uses feedback from the fruit pitch and size measurements to control the speed of the first pair of belts, ensuring that fruit are fed at the optimal rate to prevent overfeeding while maintaining continuous flow for high productivity.
Solution Approach 2:
The speed of the first pair of belts is dynamically adjusted based on fruit characteristics and grader capacity. This dynamic control allows the system to maintain high productivity while preventing overfeeding, as the speed can be optimized in real-time.
4Speed
If multiple fruits are deposited into each fruit support, then handling speed is maintained, but proper grading cannot be performed
Solution Approach 1:
The two pairs of belts work together to ensure single-file fruit formation. The first pair creates the single row, and the second pair maintains this formation during transfer, preventing multiple fruits from entering a single support while maintaining high handling speed.
Solution Approach 2:
The singulator performs preliminary action by forming fruit into a single file before they reach the fruit supports. This pre-arrangement ensures that only one fruit per support is possible, maintaining both speed and grading 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 design reduces impact forces and ensures accurate control over fruit speed and spacing, preventing overfeeding and doubles, while maintaining fruit alignment and optimizing the fill percentage of the grader, even at high speeds.
Implementation Method 1
two belts arranged in a V configuration to operate at different speeds to rotate the fruit and assist the fruit to form a single row
Implementation Method 2
the second pair of belts has energy absorbing means to stop rotation of the fruits
Data Source
AI summary
A singulator for use with fruit handling equipment including spaced fruit supports driven at a particular speed, the singulator causing the fruit to assume single file for transfer to the fruit supports, the singulator including a first pair of belts arranged in a V formation travelling at different speeds, wherein the first pair of belts merges into a second pair of belts arranged in a V formation and both travelling at about the speed of the fruit supports, and wherein the second pair of belts is adapted to be operated so as to transfer the fruits substantially at the same speed as the fruit supports, whereby fruit are transferred to the fruit supports in single file whilst moving at the same speed as the fruit supports.