Camera Moving Device for Component Mark Positioning
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Solution Overview
Problem
In component mounting machines, varying sizes and shapes of electronic components require different positions for recognition marks, leading to inefficient mounting due to the need for camera adjustments when these marks are not initially within the imaging region.
Innovation Solution
A component mounting machine with a camera moving device and control system that uses stored positional information to adjust the camera's position, ensuring the component mark is within the imaging region, even if it's initially outside, by moving the camera in orthogonal and up-down directions based on pre-stored component mark data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the camera position is adjusted manually to capture component marks at different positions, then the component mounting machine can handle various component types, but the mounting efficiency decreases due to adjustment time required
Solution Approach 1:
The system pre-stores positional information of component marks for multiple component types in advance. When a component is to be mounted, the camera automatically moves to the pre-calculated position based on the stored data, eliminating the need for manual adjustment and thus maintaining high mounting efficiency while handling various component types.
Solution Approach 2:
The camera is made movable along the optical axis direction through a camera moving device. This dynamic positioning capability allows the camera to automatically adjust its position based on the component type being mounted, enabling the system to adapt to different component mark positions without manual intervention and maintain high productivity.
2Device complexity
If the camera imaging region is fixed, then the device structure is simple, but component marks at varying positions cannot be captured
Solution Approach 1:
The camera is equipped with a moving device that enables it to move along the optical axis direction. This dynamic positioning capability allows the camera to adjust its imaging region to capture component marks at various positions on different component types, significantly enhancing the system's adaptability while maintaining relatively simple device structure.
3Measurement precision
If manual camera adjustment is performed for each component type, then accurate positioning is achieved, but the time required for setup increases
Solution Approach 1:
The system pre-stores the positional information of component marks for various component types in a storage device. This preliminary preparation of position data allows the camera to automatically move to the correct position based on the component being mounted, achieving accurate positioning without manual adjustment and thus eliminating setup time loss.
Solution Approach 2:
The system uses the pre-stored positional information as feedback to control the camera's movement. By referencing the stored position data corresponding to each component type, the camera automatically positions itself accurately, eliminating the need for manual adjustment and reducing setup time while maintaining positioning accuracy.
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 approach significantly reduces the time needed to set the component mark within the camera's imaging region, improving mounting efficiency and accuracy by ensuring the component mark and board mark are correctly positioned, enhancing overall mounting precision.
Implementation Method 1
optical path conversion means that is disposed above the suction surface and converts an optical path of light from the upper face of the component to the side
Data Source
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AI summary
A component mounting machine mounts components having a component mark for positioning on an upper face on a circuit board. The component mounting machine has a first suction nozzle that sucks a component, a transfer head that mounts the component on a circuit board, optical path conversion means that is disposed above a suction surface and converts the optical path of light from the upper face of the component to the side, a first camera that is able to receive light that is changed in an optical path, a camera moving device that relatively moves the first camera, and a control device that controls operation of the transfer head and the camera moving device. The camera moving device moves the first camera in at least a first direction that is orthogonal to an optical axis of the first camera, and an imaging region of the first camera moves in a second direction with respect to the center of the component when the first camera moves in the first direction. The control device is provided with a memory section that stores in advance positional information of the component mark, sucks the component on the first suction nozzle, and the camera moving device is moved based on the positional information within the memory section.