Crucible Shuttle Assembly for Simultaneous Loading and Unloading
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Solution Overview
Problem
Existing crucible loading and unloading systems in the steel industry require manual handling of spent crucibles and lack simultaneous reloading capabilities, limiting the throughput of samples for analysis.
Innovation Solution
A crucible handling shuttle with opposed dual gripping arms mounted on a rotatable platform that moves between a loading station and an induction furnace pedestal, allowing simultaneous handling of two crucibles, where one pair of arms picks up a new sample-holding crucible and the other pair removes and disposes of a spent crucible, while rotating to deposit the new crucible and move the spent one to a disposal chute.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sequential multi-step process is used to remove spent crucibles and load new crucibles, then the system is simpler to operate, but the throughput of samples for analysis is reduced
Solution Approach 1:
The patent combines the functions of removing spent crucibles and loading new crucibles into a single integrated shuttle mechanism. The shuttle simultaneously performs multiple operations: gripping a new crucible with one pair of arms while another pair removes a spent crucible, then rotates to deposit the new crucible on the pedestal. This merging of operations eliminates sequential delays and maximizes throughput.
Solution Approach 2:
The system maintains continuous operation by having the shuttle constantly engaged in useful work. While one pair of arms handles new crucibles, the other pair handles spent crucibles, ensuring no idle time. The rotation and linear movement of the shuttle create an unbroken cycle of loading and unloading operations.
2Productivity
If manual handling of spent crucibles is required, then the device complexity is reduced, but operator safety and productivity are compromised
Solution Approach 1:
The system achieves self-service automation where the shuttle mechanism automatically performs all crucible handling operations without operator intervention. The dual pairs of arms autonomously grip, transport, and deposit both new and spent crucibles through coordinated rotation and linear movement, eliminating the need for manual handling while maintaining high productivity.
3Productivity
If opposed dual gripping arms are used to handle both new and spent crucibles simultaneously, then the throughput is improved, but the device complexity increases
Solution Approach 1:
The gripping mechanism is segmented into two independent pairs of arms: one pair dedicated to handling new crucibles and another pair for spent crucibles. Each pair operates independently but is integrated on the same rotating shuttle, allowing simultaneous operations without mechanical interference. This segmentation enables parallel processing while maintaining manageable complexity through functional specialization.
Data Source
AI summary
A crucible handling shuttle includes a pair of opposed dual crucible-gripping arms mounted on a rotatable head and moves between an induction furnace pedestal and a crucible loading station, such that one pair of arms pick up a crucible loaded with a preweighed sample, the shuttle moves to the induction furnace, where the other pair of arms grip and remove a spent crucible. The shutter head then rotates to deposit the new sample-holding crucible onto the pedestal and subsequently moves out of the furnace area to a sample disposal chute positioned between the crucible loading station and the furnace, whereupon the spent crucible is dropped for disposal. The shuttle head is then rotated and moved to the loading station to pick up a new crucible.