Magnetic Support Pin Structure for Accurate Substrate Placement
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Solution Overview
Problem
Existing substrate support pins for placement machines are complex, expensive, and require significant space, leading to positioning inaccuracies in large substrates due to sagging.
Innovation Solution
A support pin design featuring a bellows mechanism with a permanent magnet for magnetic coupling and decoupling, or a rotating spindle for magnetic interaction, allowing for compact and cost-effective substrate support with adjustable magnetic attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a support pin with a lifting chamber and piston is used, then the substrate can be supported to prevent sagging, but the device becomes complex and expensive with large space requirements
Solution Approach 1:
The patent replaces the complex mechanical piston-lifting chamber system with a magnetic coupling system. The permanent magnet in the support pin interacts with a magnetic field from the placement board to provide holding force, eliminating the need for mechanical lifting components while achieving the same substrate support function.
Solution Approach 2:
The invention extracts and removes the unnecessary lifting chamber and piston components from the support pin design. By using only the essential magnetic coupling mechanism between the support pin and placement board, the design achieves substrate support with significantly reduced structural complexity.
2Manufacturing precision
If a support pin with a lifting chamber and piston is used, then the substrate can be supported to prevent sagging, but the cost increases significantly
Solution Approach 1:
The patent replaces the complex mechanical piston-lifting chamber system with a magnetic coupling system. The permanent magnet in the support pin interacts with a magnetic field from the placement board to provide holding force, eliminating the need for mechanical lifting components while achieving the same substrate support function.
Solution Approach 2:
The support pin is designed as a simple, inexpensive component that can be easily manufactured and potentially replaced. The use of a permanent magnet and simple housing structure makes it much cheaper than complex mechanical systems, aligning with the principle of using cost-effective components.
3Manufacturing precision
If a support pin with a lifting chamber and piston is used, then the substrate can be supported to prevent sagging, but the space requirement increases
Solution Approach 1:
The invention extracts and removes the unnecessary lifting chamber and piston components from the support pin design. By using only the essential magnetic coupling mechanism between the support pin and placement board, the design achieves substrate support with significantly reduced structural complexity.
Solution Approach 2:
The patent replaces the complex mechanical piston-lifting chamber system with a magnetic coupling system. The permanent magnet in the support pin interacts with a magnetic field from the placement board to provide holding force, eliminating the need for mechanical lifting components while achieving the same substrate support function.
4Stability of the object's composition
If the permanent magnet is always coupled to the placement board, then the support pin is stable, but the placement head cannot remove the support pin
Solution Approach 1:
The patent makes the magnetic coupling dynamic rather than static. The support pin can be magnetically coupled to the placement board during the placement process for stability, and the magnetic coupling can be released when removal is needed, allowing the system to transition between stable and removable states as required.
Solution Approach 2:
The magnetic coupling operates in periodic cycles: coupled during placement operations to provide stability, and decoupled when removal is required. This periodic coupling and decoupling enables both stable support during operation and easy removal when needed.
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
Enables precise and stable substrate support with minimal space requirements, reducing manufacturing complexity and cost while maintaining accurate component placement.
Implementation Method 1
The support pin has a lower segment with at least one permanent magnet for magnetic coupling to a placement board in the placement area
Implementation Method 2
The lower segment has a bellows, within which the fluid channel extends and to which the at least one permanent magnet is connected in such a way that the at least one permanent magnet can be moved along the Z-axis
Data Source
AI summary
The invention relates to a support pin (10) for supporting a substrate (80) in a placement area of a placement machine (100) and a placement machine (100) with at least one placement head (101), a magazine (104) with a plurality of such support pins (10) and a placement board (103).