Multi-Carriage Interlayer Transfer for Parallel Wafer Handling
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Solution Overview
Problem
Current interlayer transfer apparatuses in semiconductor manufacturing facilities, employing a belt pulley structure, struggle to efficiently transfer multiple articles simultaneously, leading to reduced transfer efficiency and bottlenecks due to their inability to handle increasing volumes in higher-layered and multi-layered factory environments.
Innovation Solution
An interlayer transfer apparatus with multiple stage modules and carriage units that operate independently and in parallel, utilizing a mast frame with balance controllers and rail systems to guide movement, allowing for simultaneous transfer of multiple articles across different layers with built-in drivers for flexible and high-capacity operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a belt pulley structure is used for interlayer transfer, then the apparatus structure is simple, but the transfer efficiency decreases and multiple articles cannot be transferred simultaneously
Solution Approach 1:
The apparatus is divided into multiple independent carriage units (first carriage unit, second carriage unit, etc.) that can operate independently on the same mast frame. Each carriage unit has its own driver and can transfer articles simultaneously, thereby increasing productivity while maintaining reasonable structural complexity through modular design
Solution Approach 2:
The system transitions from a single-carriage vertical transfer to a multi-carriage parallel transfer system. Multiple carriages operate on the same vertical mast frame but at different positions and times, adding a temporal dimension to the transfer process and enabling simultaneous multi-article transfer without significantly increasing horizontal space requirements
2Device complexity
If a single carriage unit is used, then the apparatus structure is simple, but the transfer volume cannot handle increasing article numbers in multi-layered factories
Solution Approach 1:
The transfer system is segmented into multiple independent carriage units, each capable of handling articles independently. This segmentation allows the system to process multiple articles simultaneously across different layers, directly addressing the need to handle increasing transfer volumes in multi-layered semiconductor factories
Solution Approach 2:
Multiple carriage units share the same mast frame and control system, making the system universal and adaptable. The same structural framework supports multiple carriages that can be independently controlled to handle varying article quantities and transfer requirements, providing flexibility for different production volumes
3Productivity
If multiple carriage units operate in parallel, then transfer efficiency increases, but the device complexity increases
Solution Approach 1:
Multiple carriage units are merged onto a single shared mast frame structure, combining the support function for multiple carriages into one unified structural element. This merging approach enables parallel operation of multiple carriages while avoiding the need for separate mast frames for each carriage, thereby limiting the increase in overall device complexity
Solution Approach 2:
The carriage unit design is copied and replicated multiple times, with each carriage being an identical or similar module that can be independently controlled. This modular copying approach allows for increased productivity through parallel operation while maintaining manageable complexity through standardization and modularity
Data Source
AI summary
An article transfer system includes a plurality of stage modules respectively provided at a plurality of layers, an interlayer transfer apparatus configured to transfer an article to each of the plurality of stage modules, and a plurality of loading and unloading apparatus respectively provided on each stage module of the plurality of stage modules, the plurality of loading and unloading apparatus configured to load an article onto respective stage modules of the plurality of stage modules. The interlayer transfer apparatus includes a mast frame extending so as to intersect each stage module of the plurality of stage modules, and a plurality of carriage units configured to move along a length direction of the mast frame, transfer articles, and move in a parallel manner with each other.