Additive Manufacturing Powder Module Lower Surface Clamping
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Solution Overview
Problem
Existing powder modules for additive manufacturing have limitations in maintaining the build plate's position, leading to reduced effective building area due to connection elements and requiring manual removal of non-consolidated material to access these elements, which complicates the handling and positioning of the build plate.
Innovation Solution
A powder module with a holding device featuring a clamping unit that can move between connected and disconnected positions, allowing for automatic engagement and disengagement with the build plate without interacting with the upper surface, enabling the build plate to be released without removing non-consolidated material, thus maintaining the build plate's position and allowing full use of the effective area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection elements (screws, positive locking elements) are used to hold the build plate in position, then the build plate can be securely held, but the effective building area is reduced due to the space occupied by connection elements and required safety areas
Solution Approach 1:
The connection elements are extracted from the build plate's upper surface and relocated to the lower surface. The holding device engages with the build plate from below through recesses or protrusions, completely removing the need for connection elements that would occupy space on the building surface. This extraction resolves the contradiction by maintaining secure positioning while preserving the entire upper surface for building.
Solution Approach 2:
The connection interface is moved from the two-dimensional upper surface to the one-dimensional lower edge or lower surface of the build plate. By engaging holding elements from below, the system transitions the connection problem to a different spatial dimension, eliminating the area conflict on the building surface while maintaining positioning reliability.
2Reliability
If connection elements are arranged on the build plate to hold it in position, then the build plate can be secured, but manual removal of non-consolidated material is required to access these elements for releasing the build plate
Solution Approach 1:
The connection elements are extracted from the build plate's upper surface and relocated to the lower surface, where they are accessible without removing build material. The holding device engages with recesses or protrusions on the lower surface, allowing operators to release the build plate by simply accessing elements from below, completely eliminating the need for manual material removal.
Solution Approach 2:
The holding device acts as an intermediary mechanism that engages with the build plate from below through specially designed recesses or protrusions. This intermediary interface allows for easy engagement and disengagement without interfering with the build material or requiring its removal, simplifying the operational process while maintaining secure positioning.
3Reliability
If safety areas are kept around connection elements to avoid negative effects, then the connection elements are protected, but the effective area of the build plate is further reduced
Solution Approach 1:
The connection interface is extracted from the upper surface and relocated to the lower surface of the build plate. This extraction eliminates the need for safety areas around connection elements on the building surface, as all connection activities occur from below, preserving 100% of the upper surface for additive manufacturing while still protecting connection element functionality.
4Reliability
If screws or positive locking elements are used to connect the build plate, then the build plate can be held in position, but the handling complexity increases due to the need for manual intervention to access and operate these elements
Solution Approach 1:
The build plate design with lower surface recesses or protrusions enables self-service handling. The holding device can engage and disengage the build plate automatically or with simple manual operation from below, without requiring complex procedures to access hidden connection elements. The system serves itself by providing built-in engagement features that simplify the handling process while maintaining secure positioning.
Data Source
Figure 1~2
Figure 3
AI summary
Powder module (1) for an apparatus (2) for additively manufacturing three-dimensional objects, which powder module (1) comprises a holding device (5) adapted to hold a build plate (3) of the powder module (1), wherein the holding device (5) comprises at least one clamping unit (6) connectable with and disconnectable from a recess (7) in the build plate (3), wherein the clamping unit (6) is moveable between a first position in which the clamping unit (6) is connected with the build plate (3) and a second position in which the clamping unit (6) is disconnected from the recess (7).