Flexible Transfer Device for Product Metering Without Windows
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Solution Overview
Problem
Existing metering apparatus for continuous product streams require windows between products and are not versatile enough to handle a wide variety of products, leading to inefficiencies and instability, especially with tall or unstable items.
Innovation Solution
A metering apparatus that uses a transfer device moving between extended and retracted positions independently of the conveyor, with a metering bar for the leading edge and a sweep bar for the trailing edge, allowing for precise registration and separation of products without the need for physical windows, and enabling the handling of various product types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transfer device is moved independently of the conveyor, then product separation and grouping is achieved without physical windows, but the device complexity increases due to independent drive mechanisms
Solution Approach 1:
The transfer device is segmented into multiple independently controllable sections or zones along its path, allowing different portions to be activated or positioned independently to handle various product types and pack patterns without requiring a complete system redesign
Solution Approach 2:
The transfer device employs dynamic positioning and movement control, allowing it to adjust its position, speed, and orientation independently of the conveyor based on real-time product detection and pack pattern requirements, enhancing versatility while managing complexity through programmable control
2Stability of the object's composition
If a metering bar mechanism is used for registration, then product stability is maintained, but the device complexity increases due to additional registration mechanisms
Solution Approach 1:
The metering bar registration mechanism is designed to automatically engage and disengage with products based on their passage through the metering zone, maintaining product stability without requiring external control systems or complex actuation mechanisms for each registration event
Solution Approach 2:
The metering bar mechanism serves multiple functions simultaneously: it registers product position, maintains product stability, and facilitates transfer timing, eliminating the need for separate registration and control mechanisms and thereby reducing overall system complexity
3Productivity
If physical windows between products are eliminated, then productivity increases by eliminating gaps, but the reliability decreases due to lack of physical separation
Solution Approach 1:
Physical windows and mechanical separations between products are replaced with a coordinated transfer device mechanism that uses controlled movement, timing, and positioning to achieve product separation and grouping without requiring physical gaps or windows between items in the continuous stream
Solution Approach 2:
The transfer device acts as an intermediary mechanism between the continuous product stream and the pack pattern, using its independent movement and positioning capabilities to create virtual separations and groupings without requiring physical windows or mechanical barriers between products
Data Source
AI summary
Product is conveyed as a continuous stream by a meter conveyor (12) unto a transfer plate (32) and a transfer device (42) in the form of a thin piece of flexible material. The transfer device (42) is movable between retracted and extended positions extending over a sweep conveyor (22) by securing its trailing and leading ends to flexible belts (106) on opposite longitudinal sides of the sweep conveyor (22). Product is transferred from the transfer device (42) to the sweep conveyor (22) as the transfer device (42) moves from the extended position to the retracted position and is engaged by a metering bar (52ba) which controls the product acceleration on the sweep conveyor (22) and by a sweep bar (62a) which collects the product on the sweep conveyor (22). The metering and sweep bars (52ba, 62a) move independently in the same direction along the same endless path.