Screen Printing Machine Shared Print Head for Dual Substrate Tables
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Solution Overview
Problem
Existing screen printing machines for printed circuit boards have redundant construction, leading to increased costs for screen masks, solder preparation, and storage, as well as larger machine sizes due to unnecessary redundancy in print executing sections.
Innovation Solution
A screen printing machine design with a pair of substrate supporting tables positioned perpendicular to the substrate conveying direction, sharing a single print executing section that alternates between them, allowing for dynamic positioning and reducing redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a pair of print executing sections is provided for dual substrate supporting tables, then substrate processing capability is improved, but device complexity and cost increase due to redundancy
Solution Approach 1:
The patent merges the print executing sections by providing a single shared print executing section that serves both substrate supporting tables alternately, eliminating the redundant construction where each table would have its own dedicated print executing section. This shared configuration reduces device complexity while maintaining the ability to process substrates from both tables through sequential alternation.
Solution Approach 2:
The single print executing section is designed with universal functionality to perform printing operations on substrates from either of the two substrate supporting tables. By making the print executing section multi-functional and shareable, the system achieves the productivity benefits of dual-table processing without the complexity and cost of duplicate print executing sections.
2Adaptability or versatility
If two screen masks are prepared for each substrate supporting table, then printing flexibility is improved, but cost increases due to redundant screen mask requirements
Solution Approach 1:
The patent merges the screen mask requirements by enabling a single screen mask to be used for printing on substrates from either substrate supporting table. The shared print executing section allows sequential use of the same screen mask for both tables, eliminating the need to maintain separate screen masks for each table and thereby reducing the total quantity of screen masks required.
Solution Approach 2:
The system dynamically assigns the single shared screen mask to different substrate supporting tables based on operational needs. The print executing section can alternately position itself to print on substrates from table 1 or table 2, providing dynamic adaptability that allows one screen mask to serve multiple functions without compromising printing flexibility.
3Ease of operation
If separate print executing sections are arranged for each substrate supporting table, then processing independence is improved, but machine size increases
Solution Approach 1:
The patent combines the print executing sections into a single shared unit that serves both substrate supporting tables. This merging eliminates the need for separate print executing section arrangements that would occupy more space, thereby reducing the overall machine size while maintaining processing independence through sequential alternation between tables.
Solution Approach 2:
The single print executing section is designed to be dynamically repositionable or switchable between serving different substrate supporting tables. This dynamic capability allows the system to maintain processing independence for each table while using a compact, non-redundant physical arrangement that minimizes machine size.
Data Source
AI summary
Disclosed is an inexpensive small-sized screen printing machine having low redundancy and high production efficiency and applicable to a dual conveying-type component mounting machine. The screen printing machine comprises a pair of substrate supporting tables provided to hold a respective substrate that is a print object and which is juxtaposed in a direction that is perpendicular to a conveying direction of the substrate, and a print executing section that performs a printing process alternately on the substrate held by the pair of substrate supporting tables. Due to the print executing section being driven in the direction under control of a control unit, a print position where the substrate supporting tables execute alternate printing is changed within a range in which one of the pair of substrate supporting tables and the other of the pair of substrate supporting tables oppose each other in the direction.