Rotating Drum Conveyor Pneumatic Gripping Fragile Parts
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Solution Overview
Problem
Existing sorting technologies for fragile and small parts, such as poultry eggs, are inefficient and costly due to complex mechanisms and incompatibility with high-speed processing, particularly in industrial settings where parts are handled in large numbers and require precise handling to avoid breakage or damage.
Innovation Solution
A rotating drum conveyor system equipped with pneumatic gripping tools, such as suction cups, that rotate transversely to a conveyor belt to selectively pick up non-compliant parts and transport them to a receiving area without risking breakage or damage, utilizing a vacuum system for gripping and releasing eggs efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a matrix of suction cups or complex transfer mechanisms is used to pick up and transfer fragile parts, then handling precision and safety are improved, but device complexity and cost increase significantly
Solution Approach 1:
The transfer device is segmented into multiple independent gripping tools distributed around the drum periphery, each capable of independently grasping and transferring parts. This segmentation allows the system to handle multiple parts simultaneously while maintaining simplicity in each individual gripping unit
Solution Approach 2:
The patent replaces complex mechanical gripping mechanisms with pneumatic suction cups that utilize vacuum pressure to grasp fragile parts. This substitution eliminates the need for complex mechanical linkages, springs, and actuators while providing reliable and gentle holding force
2Productivity
If a rotating drum with gripping tools is used to transfer parts, then transfer speed and productivity are improved, but the risk of dropping parts and causing damage increases
Solution Approach 1:
The patent employs pneumatic suction cups connected to a vacuum source that creates negative pressure to securely hold fragile parts during rotation. The pneumatic system provides consistent holding force throughout the drum's rotation, preventing parts from loosening or falling even at high speeds
Solution Approach 2:
The suction cups are designed with compliance elements and the pneumatic system includes pressure regulation that provides a cushioning effect, allowing the gripping surface to adapt to slight variations in part shape and position, thereby preventing stress concentration and potential drop-off
3Measurement precision
If complex transfer mechanisms are deployed to handle fragile parts individually, then handling precision is improved, but processing throughput and speed decrease
Solution Approach 1:
The patent merges multiple gripping functions into a single rotating drum structure that can simultaneously grasp and transfer multiple parts in one rotation cycle. This consolidation maintains individual part handling precision while achieving high throughput through parallel processing of multiple parts
Solution Approach 2:
The rotating drum enables continuous transfer operation where gripping, lifting, and depositing actions occur continuously as the drum rotates, eliminating idle time between transfers and maintaining constant productivity while preserving precise individual part handling
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
Enables high-speed processing of small, fragile parts with enhanced operational safety and reduced equipment costs by ensuring parts are handled individually and transferred without risk of breakage, maintaining continuous production line operation.
Implementation Method 1
The gripping tools are of the type with a pneumatic gripping head, as are suction cups in particular. These are placed under depression with respect to the surrounding air from a low pressure chamber arranged inside the drum
Data Source
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AI summary
The invention relates to a part-processing machine having, in series, consecutive parts on a belt (2) moving same along a main conveying line. Selectively identified non-compliant parts are removed from said conveying line, into a transfer device (1) by means of pickup tools (8) supported on the periphery of a rotating drum (6) mounted transversely to the conveying line and arranged to rotate about itself so as to pass over the belt, enabling the non-compliant parts to be picked up by said pickup tools and released once they have been transported away from the conveying line. The pickup tools have pneumatic gripping heads, more particularly for example suction cups. Said pneumatic gripping heads are depressurized relative to the surrounding air by means of a low-pressure chamber provided inside the drum, to which each head is connected by a tube inside a tool support arm.