3D Printing Device with Segmented Heating for High-Performance Plastics
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Solution Overview
Problem
Existing 3D printing devices face challenges in processing high-performance plastics efficiently, particularly in maintaining temperature control and adhesion between layers, which affects the quality and accuracy of printed objects, especially in applications like dental implants and components exposed to high thermal stress.
Innovation Solution
A 3D printing device with a controllable heatable printing base plate, a movable surface heating unit, and a local heating unit that can be positioned relative to the print head, along with a feed device for precise filament feeding, enables efficient processing of high-performance plastics like PAEK, ensuring uniform heating and adhesion between layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a single heating source (print base plate) is used, then the device complexity is low, but the temperature distribution uniformity and layer adhesion are insufficient
Solution Approach 1:
The heating system is segmented into multiple independent heating zones: a print base plate heating unit and a surface heating unit with multiple heating elements arranged in a grid pattern. Each zone can be controlled independently to achieve uniform temperature distribution across different regions of the printed object, resolving the contradiction between simplicity and temperature uniformity.
Solution Approach 2:
Different regions of the printed object receive different heating intensities through the grid arrangement of heating elements on the surface heating unit. This local quality approach ensures that areas requiring higher temperature for adhesion receive more heat, while other areas maintain appropriate temperatures, achieving uniform overall temperature distribution without excessive complexity.
2Strength
If the print base plate temperature is increased to improve layer adhesion, then the adhesion between layers improves, but the warping and deformation of the printed object increases
Solution Approach 1:
The heating system divides the heating function between the print base plate and the surface heating unit. The print base plate provides foundational heating for layer adhesion, while the surface heating unit with its grid of independently controllable elements applies localized heat to specific areas needing adhesion enhancement, avoiding uniform overheating that causes warping.
Solution Approach 2:
The surface heating unit applies heat locally to specific regions of the printed object rather than uniformly heating the entire base plate. This localized heating approach strengthens layer adhesion where needed while maintaining appropriate temperatures in other areas, preventing excessive warping and deformation.
3Manufacturing precision
If multiple heating zones with independent control are implemented, then the temperature control precision improves, but the device complexity increases
Solution Approach 1:
The heating system is divided into segmented zones with independent temperature control. The surface heating unit contains multiple heating elements arranged in a grid pattern, where each element or small group can be controlled independently. This segmentation enables precise temperature control for different regions of the printed object while maintaining a manageable system architecture.
Solution Approach 2:
The heating system implements dynamic temperature control where different zones can be adjusted independently based on real-time printing requirements. The control system adapts heating parameters for each zone dynamically during the printing process, achieving high temperature control precision without requiring an overly complex static system design.
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 configuration allows for improved processing of high-performance plastics, enabling the rapid and accurate production of complex dental objects and components with enhanced mechanical properties and uniform heat distribution, reducing warping and deformation.
Implementation Method 1
a controllable heatable printing base plate (22) onto which printing takes place during a printing process
Implementation Method 2
a surface heating unit (26), which, in one operating state, is designed to at least partially heat a printed object (28) arranged on the printing base plate (22) from a direction differing from that of the printing base plate
Implementation Method 3
a local heating unit (32), which, in one operating state, is designed to partially heat a printed object (28) before the application of another layer by the at least one printhead unit (12)
Implementation Method 4
the printhead unit (12) in at least one operating state is designed to melt a printing material (16)
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
The invention relates to a 3-D printing device, in particular an FFF printing device, comprising at least one printing head unit (12) and at least one feeding device (14) for feeding a printing material (16) to the at least one printing head unit (12) in at least one operating state. According to the invention, the printing head unit (12) is provided for melting a printing material (16) formed at least partially of a high-performance plastic, in particular of a high-performance thermoplastic, in at least one operating state.