Radiation-Sensing Post-Exposure Unit for Consistent 3D Curing
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Solution Overview
Problem
Existing 3D printing technologies lack reliable methods for capturing and controlling process variables during post-exposure, leading to inconsistent post-curing and potential errors in the final product.
Innovation Solution
A post-exposure unit equipped with radiation sensors to capture and control process variables, including radiation intensity, distribution, and chamber conditions, connected to a control unit for automated adjustment and calibration, ensuring stable and reliable post-curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radiation sensors are added to capture process variables, then measurement precision and reliability are improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it controls the radiation source, reads the radiation sensor, processes measured values, and adjusts process parameters. This multi-functionality reduces the need for separate dedicated components for each function, thereby improving measurement capability while limiting complexity growth.
Solution Approach 2:
The radiation sensor provides feedback to the control unit about the actual radiation intensity, which then adjusts the process accordingly. This feedback loop enables precise control and measurement without requiring overly complex manual monitoring systems.
2Manufacturing precision
If automated control and regulation are implemented, then manufacturing precision and reliability are improved, but device complexity increases
Solution Approach 1:
The control unit receives measured values from the radiation sensor and automatically adjusts the radiation source or process parameters to maintain target values. This automated feedback control ensures consistent post-curing quality without requiring complex manual intervention systems.
Solution Approach 2:
The system performs self-regulation where the control unit automatically compensates for deviations from target values based on sensor input, reducing the need for external monitoring and adjustment mechanisms.
3Reliability
If process variables are monitored and controlled, then reliability is improved, but loss of time for measurement and adjustment increases
Solution Approach 1:
The radiation sensor continuously monitors the radiation intensity during the post-exposure process, and the control unit continuously adjusts parameters as needed. This continuous monitoring and adjustment ensures reliability without requiring interruptive measurements or stoppages.
Solution Approach 2:
Real-time feedback from the radiation sensor allows the control unit to make immediate adjustments during the process, preventing deviations from target values rather than requiring post-process corrections or repeated measurements.
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
Enables precise control of post-exposure processes, reduces waste, and detects errors, thereby improving the reliability and consistency of 3D printing outcomes.
Implementation Method 1
at least one radiation sensor (e.g. a light sensor) is comprised in the post-exposure unit, which is able to capture the radiation
Implementation Method 2
at least one radiation source that is capable of further final curing of a component
Implementation Method 3
The cross-sectional information of the substance to be cured in layers by electromagnetic radiation, for example, a photo resin
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
A post-exposure unit (1) for post-exposure of a body (2) manufactured by means of an additive manufacturing method from a substance curable by radiation, the post-exposure unit (1) comprising at least one radiation source (7) configured for post-exposure, the post-exposure unit (1) comprising at least one radiation sensor (8), the radiation sensor (8) being configured to capture radiation emitted by the radiation source (7), wherein the post-exposure unit has a receiving space for receiving a body to be post-exposed, wherein the radiation sensor is configured to capture radiation emitted by the radiation source and traversed at least a part of the receiving space at least once.