Goods-to-Person Picking Station Container Exchange Mechanism
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Solution Overview
Problem
Existing goods-to-person picking systems experience downtime due to inefficiencies in container handling and replacement processes, which hinder operator productivity.
Innovation Solution
A goods-to-person container-handling mechanism incorporating a container elevator assembly and an extractor assembly with a transfer mechanism, utilizing a common drive assembly and motion-multiplying mechanisms to facilitate high-speed exchange of containers, minimizing downtime between picking steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional container handling and replacement processes are used in goods-to-person picking systems, then system simplicity is maintained, but downtime between picking steps increases and operator productivity decreases
Solution Approach 1:
The system prepares replacement containers in advance by positioning them at the pick station before the current container is fully emptied. The extractor mechanism begins extracting the current container while the elevator simultaneously positions the replacement container, ensuring no waiting time occurs during container transitions.
Solution Approach 2:
The elevator and extractor mechanisms operate in a continuous coordinated cycle where the elevator delivers a new container to the pick station at the exact moment the extractor removes the current container. This continuous operation eliminates idle time and maintains uninterrupted picking flow.
2Productivity
If a container elevator assembly and extractor assembly are implemented to enable high-speed container exchange, then operator efficiency is improved, but device complexity increases
Solution Approach 1:
The elevator assembly and extractor assembly are integrated into a single coordinated system sharing common structural support and control. The mechanisms work in tandem with synchronized timing, where the elevator's container delivery is precisely coordinated with the extractor's container removal, functioning as a unified container exchange system.
Solution Approach 2:
The pick station incorporates multiple container handling functions within a single mechanism design. The elevator not only raises containers but also positions them for extraction, while the extractor simultaneously removes containers and transfers them to the departure conveyor, creating a multi-functional container management system.
3Speed
If motion-multiplying mechanisms are used to facilitate rapid container replacement, then container exchange speed increases, but mechanical complexity increases
Solution Approach 1:
The system employs dynamic motion multiplication where the extractor mechanism uses a rotating arm with variable radius to amplify the rotational motion from the drive motor into the linear extraction motion needed. This dynamic mechanical advantage allows rapid container extraction without requiring excessively high motor speeds or complex multi-stage transmission systems.
Data Source
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AI summary
A goods-to-person picking station and method of picking goods from a product container and placing the goods in at least one order container includes a product container-handling mechanism and at least one order container-handling mechanism juxtaposed with the product container-handling mechanism. The product container handling mechanism supplies a product container to a pick area. The at least one order container-handling mechanism supplies at least one order container to the pick area. In this manner, an operator can pick goods from a product container at the pick area and place the goods selectively to the at least one order container at the pick area. The product container-handling mechanism includes a product container elevator assembly and a product container extractor assembly. The elevator assembly elevates a product container from the feed area to the pick area. The extractor assembly transfers a product container from the pick area.