Suction Nozzle Type Detection Using Intersecting Optical Axis
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Solution Overview
Problem
Conventional component mounting apparatuses face increased costs and reduced productivity due to the need for multiple sensors to determine the type of suction nozzles, especially when dealing with a large number of nozzles, as the optical axis alignment becomes complex and inefficient.
Innovation Solution
A component mounting apparatus with a detection sensor having a detection optical axis intersecting the arrayed direction of holding-member equipping sections, utilizing distinct detection positions for different nozzle types, allowing the detection sensor to determine the presence and type of equipped nozzles efficiently, thereby reducing the need for additional identifying sensors and simplifying the detection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors (transmission sensors and nozzle identifying sensors) are used to determine nozzle type, then measurement precision is improved, but device complexity and equipment cost increase
Solution Approach 1:
The patent combines the functions of transmission sensors and nozzle identifying sensors into a single transmission sensor system. The sensor detects both the presence of the nozzle and its type by monitoring optical axis interruption at different positions, eliminating the need for separate identifying sensors and reducing system complexity while maintaining identification accuracy
Solution Approach 2:
The transmission sensor is designed to perform multiple functions: detecting nozzle presence and determining nozzle type (large or small). By making the sensor multi-functional, the patent reduces the total number of sensors required while maintaining the ability to accurately identify different nozzle types
2Ease of operation
If transmission sensors are disposed along the arrayed direction of nozzle holders, then ease of operation is improved, but measurement precision deteriorates due to optical axis alignment complexity
Solution Approach 1:
The patent changes the arrangement dimension of the transmission sensors from being disposed along the arrayed direction of nozzle holders to being disposed in a direction intersecting the arrayed direction. This dimensional change allows the optical axis to be perpendicular to the nozzle holder arrangement, simplifying alignment while maintaining detection precision through multi-position monitoring
3Device complexity
If a single detection sensor is used with intersecting optical axis, then device complexity is reduced, but measurement precision may deteriorate due to limited detection capability
Solution Approach 1:
The patent segments the detection process into multiple detection positions (first detection position and second detection position) along the optical axis. By monitoring optical axis interruption at these different positions, the single transmission sensor can accurately distinguish between large and small nozzles, maintaining measurement precision while reducing device complexity
Solution Approach 2:
The patent uses a single transmission sensor to perform what would traditionally require multiple sensors by implementing partial detection at multiple positions along the optical axis. This excessive detection capability of a single sensor (detecting at multiple positions) compensates for the reduced number of sensors, maintaining precision while simplifying the system
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 solution reduces equipment costs and improves productivity by enabling the use of a single detection sensor to identify nozzle types, eliminating the need for sophisticated identifying sensors and simplifying the detection process, while preventing interference and errors.
Implementation Method 1
a detection sensor having a detection optical axis disposed in a direction intersecting with an arrayed direction of the respective holding-member equipping sections for detecting presence of interrupting of the detection optical axis by the component holding member selectively equipped to the component mounting head
Data Source
AI summary
For determining the types of component holding members equipped to a plurality of holding-member equipping sections, a detection sensor having a detection optical axis in a direction intersecting with the arrayed direction of the respective holding-member equipping sections is used, and the respective holding-member equipping sections have a first detection position where interrupting of the detection optical axis is detectable only when a second component holding member is equipped and a second detection position where interrupting of the detection optical axis is detectable when the component holding member of any type is equipped. Consequently, by sequentially positioning the detection optical axis at the respective detection positions and detecting the presence of interrupting, the type of the equipped component holding member is determined only by the detection sensor.