Component Mounting Device Axis-Optimized Imaging Path Control
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Solution Overview
Problem
Existing component mounting machines face inefficiencies in shortening the time from component supply to mounting on a circuit board due to limitations in controlling the movement speed and direction of the mounting head during imaging and positioning, leading to suboptimal routing and increased overall mounting time.
Innovation Solution
A component mounting device with a control system that determines the direction of movement based on distances along multiple axes, allowing the movable section to optimize its path from the supply position to the mounting position via an imaging position, utilizing different acceleration and maximum speeds in the X-axis and Y-axis directions to adjust the movement route and timing for efficient imaging and component placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mounting head moves at constant speed in one direction during imaging, then imaging stability is improved, but mounting time cannot be optimized
Solution Approach 1:
The patent applies dynamics by transitioning from fixed-direction constant speed movement to dynamic multi-directional movement. The mounting head is controlled to move in either the first axis direction or second axis direction based on real-time positioning requirements, allowing the system to adapt movement patterns to optimize both imaging stability and mounting time.
Solution Approach 2:
The control section changes movement parameters (direction and speed) based on calculated distances. By determining the longer distance between imaging position and mounting position, the system selects the optimal axis for movement, dynamically adjusting movement parameters to reduce mounting time while maintaining imaging quality.
2Measurement precision
If the mounting head is fixed in one direction during imaging, then positioning accuracy is improved, but movement efficiency deteriorates
Solution Approach 1:
The system dynamically selects which axis to fix and which axis to move based on the relative positions of imaging position and mounting position. This dynamic adaptation allows the mounting head to maintain positioning accuracy in the fixed direction while optimizing movement efficiency by moving only in the necessary direction.
Solution Approach 2:
The patent introduces asymmetry in movement control by treating the first and second axis directions differently based on distance calculations. Instead of symmetric treatment of both axes, the system asymmetrically selects one axis for fixation and the other for movement, optimizing the balance between positioning accuracy and movement efficiency.
3Loss of time
If the mounting head moves directly from supply position to mounting position, then movement time is reduced, but imaging quality deteriorates
Solution Approach 1:
The control section performs preliminary calculation of distances between imaging position and mounting position before controlling the mounting head movement. This preliminary action allows the system to pre-determine the optimal movement direction (first axis or second axis) to ensure both timely arrival and high-quality imaging.
Solution Approach 2:
The system uses feedback from distance calculations to adjust movement control. By continuously monitoring and calculating distances, the control section provides feedback to select the optimal axis for movement, ensuring that the mounting head reaches the mounting position efficiently while maintaining imaging quality through controlled movement in the selected direction.
Data Source
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AI summary
Provided is a component mounting device in which shortening of a mounting time from the supply of a component to the mounting of the component on an object via imaging by an imaging device is possible. A component mounting machine moves a mounting head from a supply position P1 to each of mounting positions P3 and P4 of a circuit board CB via an imaging position P2. Further, the component mounting machine performs control such that the mounting head moves in a direction of movement at the time of imaging that is either of an X-axis direction or a Y-axis direction when passing through the imaging position P2. The component mounting machine determines the direction of movement at the time of imaging, according to a first X-axis distance Lx and a first Y-axis distance Ly from the imaging position P2 to each of the mounting positions P3 and P4.