Jet Printing Data Generation for PCB Solder Paste Application
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Solution Overview
Problem
The challenge in the field of surface mount technology is the inefficiency of traditional stencil printing methods, particularly on 3D printed boards and Package on Package (POP) soldering, which leads to increased costs and extended product development cycles due to the need for frequent stencil updates with design changes, whereas spray printing offers enhanced precision but requires rapid and accurate generation of jet printing data.
Innovation Solution
A method and system for generating jet printing data involves obtaining a pad pattern, determining the image scanning angle of highlighted regions, scanning and filling these regions to obtain a jet printing path, and generating data based on this path, utilizing image binarization, denoising, and rotation algorithms to process the pad pattern and adjust for different shapes and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If stencil printing is used, then manufacturing precision is improved, but device complexity and cost increase due to frequent stencil updates
Solution Approach 1:
The patent uses image processing to create a digital pad pattern that serves as a virtual template, replacing the physical stencil. The pad pattern is processed through binarization and denoising to generate printing data, eliminating the need for physical stencil fabrication and updates while maintaining precise solder paste application.
Solution Approach 2:
The patent replaces the mechanical stencil system with a digital image processing system. Instead of physically updating stencils for design changes, the system processes pad patterns through algorithms (binarization, denoising) to generate updated printing data, substituting mechanical stencil management with computational methods.
2Productivity
If spray printing is used, then productivity is improved, but manufacturing precision may worsen without proper data generation
Solution Approach 1:
The patent performs preliminary image processing actions (binarization, denoising, pad pattern extraction) before the actual spray printing process. This preparatory data generation ensures that the spray printing system has accurate printing data, thereby maintaining manufacturing precision while enabling high-speed productivity.
Solution Approach 2:
The system uses image processing to analyze the pad pattern and generate feedback in the form of printing data that guides the spray printing process. The denoising and binarization algorithms provide feedback about the actual pad geometry, allowing the system to adjust printing parameters for precise solder paste placement.
Data Source
AI summary
A method and system for generating jet printing data, an electronic device, and a storage medium are provided. The method includes: step 1: obtaining a pad pattern, wherein the pad pattern comprises several highlighted regions; step 2: determining an image scanning angle of each of the highlighted regions in the pad pattern; step 3: scanning and filling each of the highlighted regions based on the corresponding image scanning angle, to obtain a jet printing path; and step 4: generating jet printing data based on the jet printing path. In the method for generating jet printing data of the present disclosure, only a bare PCB or a Gerber file is needed so that the jet printing data can be rapidly and accurately generated and provided to the jet printing system, thereby maximizing the speed for generating jet printing programs, increasing program quality, and operating efficiency.