Downward-Facing PCB Mounting to Prevent Dust Accumulation
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Solution Overview
Problem
Miniaturization of electronic components has led to increased interference from foreign materials like dust, causing defects in soldering due to accumulation on the printed board during chip mounting processes in conventional chip mounters.
Innovation Solution
A chip mounter design where the printed board is mounted vertically or downwardly, with the manipulator and cable rack chain positioned below or beside it, preventing foreign materials from accumulating on the board surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the printed board is mounted horizontally on a bed during chip mounting, then the manipulator can easily transfer chips from above, but foreign materials like dust accumulate on the board surface causing soldering defects
Solution Approach 1:
The patent inverts the conventional mounting orientation by positioning the printed board vertically or downwardly on the bed, rather than horizontally. This inversion changes the direction of gravity's effect on foreign materials, causing them to fall away from the board surface instead of accumulating on it, thereby resolving the contradiction between ease of operation and prevention of foreign material accumulation.
Solution Approach 2:
The patent transitions from a two-dimensional horizontal board surface to a three-dimensional vertical or downward orientation. This dimensional change allows foreign materials to be separated from the board surface by gravity acting in a different direction, eliminating the accumulation problem while maintaining operational efficiency through adjusted manipulator positioning.
2Productivity
If electronic components are miniaturized to increase integration, then productivity improves, but interference from foreign materials increases causing soldering defects
Solution Approach 1:
By inverting the board orientation to vertical or downward, the patent creates a gravitational environment where foreign materials naturally fall away from the miniaturized component areas. This resolves the contradiction by allowing high integration density while preventing foreign material interference through the inverted orientation that directs contaminants away from the sensitive miniaturized electrodes.
3Productivity
If the manipulator operates in space above the printed board, then chip picking and placement is efficient, but foreign materials fall down and accumulate on the board
Solution Approach 1:
The patent inverts the board orientation so that the manipulator operates beside or below the board rather than above it. This inversion prevents foreign materials generated during manipulation from falling onto the board surface, maintaining high mounting efficiency while eliminating the harmful accumulation effect through the reversed spatial relationship.
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
This configuration effectively inhibits the accumulation of dust and other foreign materials, reducing soldering defects by ensuring the chip mounting surface remains clean and free from interference.
Implementation Method 1
a bed located above said manipulator or located sidewise relative to said manipulator for mounting said printed board vertically or downwardly
Data Source
AI summary
A method of chip mounting uses a manipulator to mount an electronic component in a vertically upward direction onto a downwardly-facing mounting surface of a printed circuit board held by a holding bed. The holding bed is located above the manipulator or sidewise relative to the manipulator for mounting by the manipulator onto the downwardly-facing mounting surface of the printed circuit board.