Multi-Track Conveyor Routing for Vehicle Defect Repair Throughput
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Solution Overview
Problem
Current paint defect repair processes in vehicle manufacturing are inefficient due to manual processes that result in idle operators or robots, and the need for stopping conveyor systems, leading to production losses and inefficiencies in processing vehicles with varying defect requirements.
Innovation Solution
A multi-track conveyor system with input and output tracks, workstations, and an object inspection system that directs vehicles to specific workstations based on defect type, location, and repair time, allowing for automated and manual repair steps to optimize production time and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single-track conveyor system is used with predetermined cycle time for all vehicles, then the conveyor system operates with uniform timing, but operators and robots sit idle for portions of the cycle time and production efficiency decreases
Solution Approach 1:
The single-track conveyor system is segmented into multiple parallel tracks, each capable of handling vehicles independently. This allows vehicles with different defect repair requirements to be processed simultaneously on different tracks, eliminating idle time for operators and robots while maintaining uniform conveyor operation.
Solution Approach 2:
The system dynamically assigns vehicles to specific tracks based on real-time defect assessment. The object inspection system evaluates each vehicle's defects and routes it to the appropriate track with the suitable repair capacity, optimizing resource utilization and eliminating idle time across the production system.
2Productivity
If more time is allocated to repair defects, then more defects can be corrected, but the conveyor system must be stopped resulting in production loss
Solution Approach 1:
By dividing the repair system into multiple parallel tracks, the total defect repair capacity is maintained while allowing continuous conveyor operation. Each track can handle a portion of the defect repair workload simultaneously, eliminating the need to stop the conveyor system to allocate additional repair time.
Solution Approach 2:
The multi-track conveyor system enables continuous operation of the conveyor while defect repairs are performed in parallel on multiple tracks. This maintains the continuous flow of vehicles through the system while adequately addressing defect repair needs without production interruptions.
3Productivity
If every vehicle takes the same cycle time on the conveyor, then the conveyor operates smoothly, but vehicles with fewer defects are over-processed and vehicles with more defects cannot be fully repaired
Solution Approach 1:
The object inspection system performs preliminary assessment of each vehicle's defects before the vehicle enters the repair area. Based on this advance information, the system pre-assigns the vehicle to the most appropriate track, ensuring that vehicles with fewer defects are routed to faster tracks while vehicles with more defects receive appropriate repair resources without disrupting the overall conveyor timing.
Solution Approach 2:
Different tracks are configured with different repair capabilities and cycle times matched to the specific defect requirements. The system applies local quality by tailoring the repair process on each track to match the actual defect severity, rather than applying a uniform repair process to all vehicles.
Data Source
AI summary
A multi-track conveyor system may include an input track. A multi-track conveyor system may include an output track. A multi-track conveyor system may include a plurality of tracks coupling the input track and the output track, wherein one of the tracks includes a workstation configured to repair the defect on the article of manufacture. Vehicles with high numbers of defects that exceed the system throughput design can be held and prioritized over vehicles which meet the system design criteria to maintain throughput. During times when the system is starved and/or during non-production hours, vehicles with higher numbers of defects can then be processed. In this way, such vehicles do not impede the repair progress of other vehicles along the conveyor system.