Stationary Transfer Roller Lacquer System
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Solution Overview
Problem
Existing lacquer transfer systems face challenges in achieving high quality lacquer transfer on large and complexly shaped aircraft surface components, particularly when the device needs to be moved simultaneously while transferring lacquer.
Innovation Solution
A system where the work piece is moved along a transfer roller with a positioning device, allowing the transfer roller to roll on the work surface while the device remains stationary, and incorporating a UV-light unit for immediate lacquer hardening, with a slit nozzle and transfer roller design that ensures consistent lacquer distribution and thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the device is moved along the work surface while transferring lacquer, then the system can handle large and complexly shaped work pieces, but the lacquer transfer quality deteriorates due to the complexity of simultaneous movement and transfer operations
Solution Approach 1:
Instead of moving the lacquer transfer device along the work surface, the work piece is moved along a stationary transfer roller. This inversion of the movement relationship simplifies the system by eliminating the need for complex positioning control during lacquer transfer, thereby maintaining high transfer quality while still accommodating large and complexly shaped work pieces
Solution Approach 2:
The system separates the lacquer transfer function from the work piece positioning function. The transfer roller remains stationary and dedicated to lacquer application, while a separate positioning device handles work piece movement. This segmentation allows each component to optimize its function independently, improving both transfer quality and adaptability
2Manufacturing precision
If the device remains stationary while transferring lacquer, then the lacquer transfer quality improves, but the system complexity increases due to the need for positioning devices
Solution Approach 1:
The work piece itself serves as the moving element, carried by a positioning device that integrates with the work piece handling process. The stationary transfer roller simply receives the work piece and applies lacquer during its natural movement through the positioning device, eliminating the need for additional complex positioning mechanisms dedicated solely to the transfer device
3Loss of time
If UV-light hardening is applied immediately after lacquer transfer, then the lacquer setting time is reduced, but the system complexity increases due to the addition of hardening units
Solution Approach 1:
The UV-light hardening unit is integrated into the existing transfer roller structure, combining the lacquer transfer and hardening functions in a single integrated unit. This merging allows immediate hardening of the lacquer as it is transferred to the work piece surface, significantly reducing setting time while minimizing the increase in overall system complexity through shared structural elements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies the lacquer transfer process, ensuring high quality and consistency on variously sized and shaped work pieces without requiring the device to move, and allows for efficient UV-hardening of the lacquer, enhancing the overall transfer quality.
Implementation Method 1
a hardening unit that might be connected directly or indirectly to the frame and that might be formed as a UV-light unit configured for hardening the lacquer in a contactless way by emitting UV-light
Data Source
AI summary
A system for lacquer transfer is disclose having a device for lacquer transfer. The device includes a frame, a transfer roller with a circumferential lateral wall, and a slit nozzle for dispensing lacquer. The slit nozzle is connected to the frame. An outside contact surface of the lateral wall includes several depressions. The transfer roller is mounted rotatably to the frame. The slit nozzle is arranged contactless to or in direct contact with the outside contact surface of the lateral wall for dispensing lacquer into respective depressions in the lateral wall while the transfer roller is rotated. The transfer roller is configured to roll with the outside contact surface on a work surface of a work piece for transferring the lacquer from the depressions to the work surface.