Solar Wafer Printer UVW Alignment Without a Separate T-Axis
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Solution Overview
Problem
Current silicon wafer printers have excessive structural complexity due to multiple axes, leading to poor precision and low efficiency in aligning steel mesh with silicon wafers, particularly in the front-back movement controlled by motors and lead screws.
Innovation Solution
A four-position full-cell solar silicon wafer printer design that reduces the T-axis structure and utilizes two Y-axis modules and one X-axis module for rotational movement, integrated with a detection camera assembly, and employs a novel lifting mechanism to enhance alignment precision and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple axes (X-axis, Y-axis, T-axis) are coordinated to align the steel mesh with the silicon wafer, then the alignment function is achieved, but the structural complexity increases and precision deteriorates
Solution Approach 1:
The patent removes the T-axis (rotation) structure from the traditional three-axis coordination system. Instead of using separate X-axis, Y-axis, and T-axis modules, the invention extracts the rotation function and integrates it into the Y-axis module, resulting in a simplified two-axis structure that achieves the same alignment capability with fewer components
Solution Approach 2:
The patent merges the rotation function (previously T-axis) with the Y-axis module. The Y-axis module now performs both linear movement and rotational movement, eliminating the need for a separate T-axis structure. This consolidation reduces the number of independent modules while maintaining full alignment capability
2Productivity
If a motor paired with a lead screw is used to control the front-back movement of the squeegee, then the movement control is achieved, but the processing efficiency decreases
Solution Approach 1:
The patent replaces the traditional motor-lead screw mechanical transmission system with a direct-drive mechanism. The squeegee's front-back movement is controlled directly without intermediate mechanical transmission components, eliminating the inefficiencies and complexity associated with motor-lead screw systems while improving response speed and processing efficiency
Data Source
AI summary
The present invention discloses a four-position full-cell solar silicon wafer printer, including a base, an infeed guide rail, a detection camera assembly, a turntable assembly, a lifting module, a UVW correction alignment mechanism, and an outfeed guide rail. The UVW mechanism comprises two Y-axis modules, one X-axis module, a printing platform, a steel mesh frame, and a printing squeegee kit. The Y/X-axis modules are under the platform, their drive ends connected to the steel mesh frame. The squeegee kit moves left-right on the platform. It uses the Y/X-axis modules and detection camera to realize X, Y, θ three-axis motion, ensuring steel mesh-silicon wafer alignment and optimizing printing directions.