Rotary Head Indexing Angle Matching for Component Mounter Efficiency
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Solution Overview
Problem
In electronic component mounting, when the indexing angle of the rotary head differs significantly from the preparation image data, it leads to a large rotation amount required for the rotary head to reach the imaging position, potentially resulting in incomplete indexing by the time the part camera starts imaging, thereby reducing mounting efficiency.
Innovation Solution
The method involves extracting specific positional information from multiple preparation position data sets and aligning the rotary head's indexing angle with the corresponding angle, allowing the rotary head to reduce its rotation amount to the imaging position, thus minimizing waiting time for the part camera to start imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the indexing angle of the rotary head is made to coincide with the indexing angle in the preparation image data, then the measurement precision of component position is improved, but the productivity decreases due to large rotation amount and waiting time
Solution Approach 1:
The system performs preliminary imaging at multiple indexing angles (0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°) during the preparation phase. This allows the creation of a comprehensive position database that can be quickly referenced during actual mounting operations, eliminating the need for large rotary head rotations and waiting times while maintaining measurement precision.
Solution Approach 2:
The system dynamically selects the most appropriate preparation image data based on the current indexing angle of the rotary head. Instead of forcing the rotary head to a fixed position, the system adapts by choosing pre-captured images that match the current angle, allowing continuous operation without rotation delays.
2Productivity
If the rotary head rotation amount is reduced to eliminate waiting time, then the productivity is improved, but the measurement precision may be compromised without proper indexing angle matching
Solution Approach 1:
The system pre-captures images at all possible indexing angles during setup, creating a ready-to-use database of component positions. This eliminates the need for real-time rotation and waiting, as the appropriate image data is already available immediately when needed, maintaining both speed and precision.
Solution Approach 2:
The system creates multiple copies of the preparation image data at different indexing angles. Instead of rotating the rotary head to match a single reference angle, the system uses the appropriate copied image data that corresponds to the current rotary head position, enabling immediate imaging without rotation delays.
Data Source
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AI summary
An electronic component mounting method comprises: a preparatory imaging step of storing preparation position information of component holding sections obtained based on preparation images imaged with no electronic component held by the component holding sections and with a rotary head indexed to multiple indexing angles; a pick-up step of picking up electronic components; an angle information acquisition step of acquiring indexing angle information of the rotary head when the final electronic component is picked up; an extraction step of extracting specific positional information from multiple pieces of preparation position information based on the indexing angle information and the multiple indexing angles of the rotary head at which the rotary head is imaged in the preparatory imaging step; a component imaging step of imaging the electronic components with the indexing angle of the rotary head made to coincide with an indexing angle of the rotary head that corresponds to the specific positional information; and a measurement step of measuring a positional deviation amount between a position of the multiple component holding sections that is recognized from the specific positional information and a position of the electronic component that is recognized from the component image obtained in the component imaging step.