Vial Accumulator Gate Mechanism for Continuous Pharmacy Filling
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Solution Overview
Problem
In high-volume pharmacy environments, automatic pill dispensing machines often idle while waiting for totes to arrive, as they fill and deposit vials one at a time, leading to inefficiencies in prescription filling.
Innovation Solution
A vial accumulator system with a carousel and gate mechanism that stages filled vials before they are deposited into a tote, allowing the dispensing machine to continue filling vials even when the tote is not yet positioned.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the dispensing machine fills and deposits vials one at a time waiting for tote arrival, then the tote receiving process is simple and reliable, but the dispensing machine idles and productivity decreases
Solution Approach 1:
The accumulator receives and stores filled vials before the tote is ready to receive them. This preliminary accumulation allows the dispensing machine to continue operating without waiting for the tote, thereby eliminating idle time and increasing productivity.
Solution Approach 2:
The accumulator acts as an intermediary buffer between the dispensing machine and the tote. It decouples the dispensing process from the tote receiving process, allowing the dispensing machine to operate continuously while the tote arrives at its own pace.
2Productivity
If the dispensing machine waits for tote positioning before filling vials, then the synchronization between filling and receiving is precise, but the overall filling speed is reduced
Solution Approach 1:
Vials are accumulated in the accumulator before the tote is positioned to receive them. This preliminary action allows the dispensing machine to maintain high filling speed without compromising reliability, as the accumulator ensures vials are ready when the tote arrives.
Solution Approach 2:
The dispensing machine continues to fill vials without interruption even when the tote is not yet positioned. The accumulator ensures continuous useful action by storing vials during the waiting period, maintaining both high speed and reliability.
3Productivity
If multiple vials are accumulated before depositing into tote, then the dispensing machine can operate continuously, but the complexity of the vial accumulation system increases
Solution Approach 1:
The accumulator is divided into multiple compartments or positions that can hold vials sequentially. This segmentation allows the system to accumulate multiple vials using a simple incremental mechanism, achieving continuous dispensing capability without excessive complexity.
Solution Approach 2:
The accumulator serves as a simple intermediary device with basic storage and release functions. It provides the necessary buffering capability for continuous operation while maintaining relatively simple structure, balancing productivity improvement with acceptable system complexity.
Data Source
AI summary
A vial accumulator for use in a high volume pharmacy facility includes: a feed plate having an aperture; a vial staging unit mounted to the feed plate, the vial staging unit comprising at least one receiving compartment; a gate movably mounted to the feed plate, the gate movable relative to the feed plate between a blocking position, wherein the gate prevents a vial from exiting one of the receiving compartments, and a dispensing position, in which the gate allows passage of a vial in one of the receiving compartments through the aperture in the feed plate; and a controller operatively associated with the vial staging unit and the gate.