Mounting Machine Photoelectric Sensor for Fallen Component Detection
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Solution Overview
Problem
In mounting machines, the holding tool may fail to properly pick up components, causing them to fall near the supply position, which can result in contact between the mounting head and the fallen component, leading to operational issues.
Innovation Solution
The implementation of photoelectric sensors to detect the presence of components near the supply position, preventing the mounting head from contacting any fallen components by stopping the operation when a component is detected in the predetermined range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the holding tool picks up components at the supply position, then the mounting process can proceed, but components may fall on or near the supply position causing the mounting head to contact them
Solution Approach 1:
The photoelectric sensor detects fallen components before the mounting head reaches the supply position. By performing detection in advance and stopping the mounting head beforehand, the system prevents contact between the mounting head and fallen components while maintaining continuous mounting operation
Solution Approach 2:
A photoelectric sensor is introduced as an intermediary detection device between the supply position and the mounting head. The sensor acts as a mediator that detects fallen components and triggers the control unit to stop the mounting head, preventing harmful contact without interfering with the normal mounting process
2Reliability
If photoelectric sensors are added to detect fallen components, then contact between mounting head and components is prevented, but device complexity increases
Solution Approach 1:
The photoelectric sensor and control unit form an automatic detection and protection system that operates independently. The sensor self-detects fallen components and the control unit automatically stops the mounting head without requiring external intervention, making the added complexity self-justifying through automated safety functionality
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
Effectively prevents contact between the mounting head and fallen components, ensuring safe and reliable operation by determining the presence of components above the supply position using photoelectric sensors.
Implementation Method 1
a first photoelectric sensor configured to sense the presence or absence of the component in a predetermined range extending above the supply position in a component picking direction
Data Source
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AI summary
An electronic component mounter of the present invention includes a supply device 25, 26 configured to supply a component at a supply position, a mounting head including a holding tool configured to hold a component supplied by the supply device, and a photoelectric sensor 27, 28 capable of detecting foreign matter in a predetermined range including a space lying above the supply position. Then, whether foreign matter exists in the predetermined range is determined based on a result of a detection executed by the photoelectric sensor at a timing other than a timing at which the holding tool performs a picking up operation at the supply position. According to this, it is determined whether a component exists at or near the supply position, which makes it possible to prevent the mounting head from coming into contact with a component that falls on or near the supply position.