3D Printer Sensor for Bed Leveling via Optical Reflection
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Solution Overview
Problem
There is a need for an effective and efficient system to test, maintain, and correct the level or orientation of the working surface of 3D printing devices, as existing technologies lack reliability and resistance to wear and tear, affecting the precision and quality of 3D printed objects.
Innovation Solution
A 3D printing apparatus equipped with a sensor device that uses photo detectors and a light source to determine and adjust the spatial parameters between the working surface and the printing head, employing a levelling mechanism with stepper motors and a control board to ensure accurate alignment and prevent wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor device with photo detectors and light source is used to determine spatial parameters, then measurement precision is improved, but device complexity increases
Solution Approach 1:
A reflective surface is introduced as an intermediary between the light source and photo detectors. The light source emits light that reflects off the working surface onto the photo detectors, allowing indirect measurement of spatial parameters without direct contact between sensors and the working surface, thus improving precision while managing complexity
Solution Approach 2:
The sensor device creates an optical copy or representation of the working surface orientation through the reflected light pattern on the photo detectors. This optical copying mechanism enables precise measurement of spatial parameters without requiring complex mechanical measurement systems
2Manufacturing precision
If a levelling mechanism with stepper motors is implemented to adjust working surface orientation, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The sensor device provides real-time feedback on the working surface orientation by detecting the reflected light pattern. This feedback is used to control the stepper motors in the levelling mechanism, creating a closed-loop system that automatically adjusts the working surface to the correct orientation, improving precision while using simple motor components
Solution Approach 2:
The levelling mechanism is designed to automatically adjust and level the working surface without manual intervention. The sensor device and stepper motors work together in an automated system that self-corrects orientation issues, reducing the need for complex manual adjustment mechanisms
3Adaptability or versatility
If the sensor device and reflective surface are provided on separate components (print head and bed), then adaptability is improved, but device complexity increases
Solution Approach 1:
The sensor device is designed with universal functionality that can operate whether the reflective surface is on the print head or the bed. The photo detectors and light source configuration can detect spatial parameters in both arrangements, providing versatility without requiring completely different sensor systems for each configuration
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
The system provides reliable and precise adjustment of the working surface, enhancing the reliability and longevity of 3D printing apparatuses by maintaining optimal orientation and reducing wear, thereby improving the quality and consistency of printed objects.
Implementation Method 1
The light source is configured to transmit a beam of light toward the reflective surface. A reflected beam of light from the reflective surface is directed toward the plurality of photo detectors
Implementation Method 2
each photo detector is configured to detect a reflected beam of light
Data Source
AI summary
The various embodiments herein provide a 3D printing apparatus with a sensor device. The apparatus comprises a base platform, a support frame mounted on the base platform and a print head mounted on the support frame. The print head is aligned with a working surface on which the 3D object to be printed is placed. A sensor device is configured to determine and adjust a spatial parameter between the working surface and a print head. The sensor device is mounted on the print head and detects misalignment in the position of the working surface with the print head. The sensor device employs photo detection method for determining a desired orientation of the working surface. The printing apparatus comprises a controller unit for receiving the input from the sensor device to correct the orientation of the working surface.