Component Mounting Alignment Using Corrected Adhesive Placement
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Solution Overview
Problem
In component mounters, positional deviations between the light-emitting element and the component center can cause the mounting position of the light-emitting element to deviate from the adhesive, leading to insufficient contact and improper positioning on the board.
Innovation Solution
A component mounting system that includes a positional deviation detection device to correct the arrangement of positioning material on the board, ensuring the electronic component is aligned and mounted at a predetermined position, using a control device to manage the alignment and mounting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the mounting position is shifted by the positional deviation amount to align the positioning target, then the alignment accuracy is improved, but the positioning material may not be sufficiently contacted by the component body leading to improper fixation
Solution Approach 1:
The patent applies preliminary action by arranging the positioning material in advance at a corrected position that anticipates the component's actual contact point. The control device calculates the corrected arrangement position by subtracting the positional deviation from the target position, and places the positioning material there before component mounting. This ensures that when the component is mounted at the target position, its body properly contacts the pre-placed positioning material for reliable fixation.
Solution Approach 2:
The patent changes the positional parameter of the positioning material arrangement by introducing a corrected arrangement position that accounts for positional deviation. The control device modifies the original target position by applying the deviation correction to determine where the positioning material should be placed, rather than placing it at the nominal target position. This parameter adjustment ensures proper contact between the component body and positioning material.
2Ease of manufacture
If the positioning material is arranged at the target position without correction, then the arrangement process is simple, but the component body does not contact the positioning material sufficiently when positional deviation exists
Solution Approach 1:
The patent implements feedback by using the positional deviation detection result to adjust the positioning material arrangement position. The control device receives feedback about the component's actual position relative to the target, calculates the corrected arrangement position based on this feedback, and uses this information to guide the head in placing the positioning material at the correct location, ensuring both simplicity and precision.
Data Source
AI summary
In the component mounting system, when an electronic component having a positioning target is held and mounted onto the upper face of a board, the positioning target is aligned to a predetermined position of the board. The component mounting system detects a positional deviation of the positioning target on the upper face of the electronic component and performs an arrangement operation of arranging a positioning material on the board by correcting the arrangement position in accordance with the detected positional deviation. The component mounting system then performs a mounting operation for mounting the electronic component on the board by aligning the positioning target to the predetermined position of the board on which the positioning material has been arranged.