Orbital Workpiece Printing for Narrow-Head Precision
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Solution Overview
Problem
Existing printing technologies face challenges in achieving high-quality, precise printing with efficient use of resources, particularly in single-pass and multi-pass methods, where single-pass methods require wide print heads and multi-pass methods suffer from geometric errors and inefficiencies.
Innovation Solution
A process unit and method that allows for a workpiece to be processed multiple times along an orbital path, using a relative positioning device to adjust the workpiece's position transversely, enabling both single-pass and multi-pass printing with precise application of processes, such as inkjet printing, laser treatment, or image-assisted measurement, by utilizing a clamp or shuttle system to maintain consistent positioning and allow for flexible processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If single-pass printing method is used, then sharp contours and precise positioning are achieved, but wide print heads and extensive printing technology are required
Solution Approach 1:
The printing process is divided into multiple passes, with each pass covering only a portion of the workpiece. The print head maintains a narrow width but achieves complete coverage through sequential printing operations, eliminating the need for wide print heads while maintaining contour sharpness through controlled drop placement in each pass.
Solution Approach 2:
The solution transitions from a single-dimensional (single-pass) approach to a multi-dimensional (multi-pass) process by adding the time dimension with sequential passes. The print head moves across the workpiece multiple times in a systematic pattern, covering the entire surface through repeated operations rather than requiring all printing capability in one pass.
2Device complexity
If multi-pass printing method is used, then device complexity is reduced, but geometric errors and positioning inaccuracies occur
Solution Approach 1:
The system incorporates feedback mechanisms to monitor and correct the position of each printed drop across multiple passes. By tracking the actual position of drops and comparing it with the intended position, the system can compensate for geometric errors and maintain consistent positioning accuracy throughout the multi-pass printing process.
Solution Approach 2:
The system performs preliminary positioning and calibration before the actual multi-pass printing begins. By pre-establishing reference points and calibration patterns, the system ensures that subsequent printing passes maintain accurate geometric relationships, preventing error accumulation across multiple operations.
3Device complexity
If multi-pass printing method is used, then resource requirements are reduced, but productivity decreases
Solution Approach 1:
The multi-pass printing system is designed to maintain continuous useful action by optimizing the sequence and timing of passes. The print head operates continuously across the workpiece surface in a systematic pattern, minimizing idle time and ensuring that each pass contributes productively to the overall printing task, thereby maintaining high productivity despite multiple passes.
Data Source
AI summary
A process unit for the printing of a workpiece, with a process mechanism for the printing of the workpiece in an infeed direction in a process area, with a relative positioning device for the relative positioning of the workpiece and the process mechanism in a transverse direction, and an infeed device for the feed of the workpiece to the process mechanism, whereby the infeed device is designed to feed the workpiece to the process mechanism in a circulation process more than once along at least one orbital path.