Work Head Unit Component Orientation Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mounting heads lack accurate information regarding the orientation of components held, leading to potential misalignment during the mounting process.
Innovation Solution
A work head unit with detection sections positioned to directly detect the orientation of the component holding section, allowing for more accurate acquisition and correction of the component's orientation, utilizing reflective-type optical encoders to improve positional accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the orientation of the component holding section is detected at a position facing the cylindrical tube section from the outer circumferential side, then the accuracy of component orientation detection is improved, but the device complexity increases due to the specific positioning of detection sections
Solution Approach 1:
The patent introduces a reflective surface as an intermediary element between the detection section and the component holding section. The reflective surface reflects light from the component holding section back to the detection section, enabling indirect detection of component orientation without requiring direct line-of-sight access. This resolves the contradiction by allowing accurate detection from the outer circumferential side while simplifying the overall detection system configuration.
2Measurement precision
If multiple detection sections are positioned at different locations to detect component orientation, then the measurement accuracy is improved, but the ease of operation deteriorates due to increased alignment requirements
Solution Approach 1:
The patent combines multiple detection functions into a single integrated detection section that can detect component orientation at multiple positions simultaneously. By merging the detection capabilities and using a unified detection system with reflective surfaces, the patent achieves accurate multi-point orientation detection while eliminating the need for separate alignment procedures for each detection position, thus improving ease of operation.
3Measurement precision
If the detection section is positioned close to the component holding section for accurate detection, then the measurement precision is improved, but the device complexity increases due to space constraints and integration difficulties
Solution Approach 1:
The patent transitions the detection approach from a direct linear arrangement to a spatial configuration using reflective surfaces. By positioning the detection section on the outer circumferential side and using light reflection, the system achieves accurate rotational position detection without requiring the detection section to be physically adjacent to the component holding section. This dimensional change in the detection path resolves the space constraint issue while maintaining detection 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
Enhances the accuracy of component orientation detection and correction, ensuring precise mounting by directly monitoring the rotational position of the component holding section, thereby improving the overall mounting process.
Implementation Method 1
the detection section is arranged at a position facing a reflective surface from the outer circumferential side of the work head unit
Data Source
Figure 1
Figure 2
Figure 3(a)~3(B)
AI summary
Work head unit 17 detects the rotational position of suction nozzle 42 with first Q-axis encoder 73 positioned facing component holding section 55 (suction nozzle 42) holding component P. Thus, because the orientation of the portion holding the component is detected, compared to, for example, an item that detects the rotational position of suction nozzle 42 with encoder 64 of Q-axis motor 63, information better reflecting the orientation of the component P is acquired. With mounting head unit 17, it is desirable to detect the orientation of component holding section 55 at two locations, suction nozzle 42 and syringe member 56. By doing this it is possible to detect the state (for example, deformation) of syringe section 56, or the deviation between syringe member 56 and suction nozzle 42.