3D Printing Passive Latches for Sealed Build Compartments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 3D printing systems with removable build units are costly due to expensive and complex equipment replication across multiple units, and there is a risk of build material pollution affecting other system components if not sealed properly.
Innovation Solution
A non-powered compartment with passive latching elements that engage with a platform to securely seal and isolate build material during operations, using mechanical interactions without electrical power, allowing for efficient and safe transfer between different 3D printing sub-systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple removable build units are used in 3D printing systems, then system versatility and productivity are improved, but equipment cost increases due to replication of expensive components
Solution Approach 1:
The build unit is divided into two segments: a reusable base unit containing expensive powered components (build platform, drive mechanisms, electronics) and a disposable non-powered compartment containing build material. This segmentation allows the expensive base unit to be shared across multiple systems while the inexpensive compartments can be replicated freely, resolving the contradiction between productivity and cost.
Solution Approach 2:
The powered base unit is designed with universal interfaces and standardized mounting mechanisms that allow it to interact with multiple different 3D printing sub-systems. The passive compartment is designed to be compatible with various powered units, creating a universal system where one expensive unit can serve multiple functions across different printing operations, reducing the need to replicate expensive components.
2Device complexity
If the compartment is designed to be removable and non-powered, then cost and complexity are reduced, but sealing and isolation reliability may worsen
Solution Approach 1:
A sealing interface acts as an intermediary between the passive compartment and the powered base unit. This sealing mechanism is integrated into the base unit and actively engages with the compartment during attachment, providing reliable sealing without requiring complex powered components within the compartment itself. The sealing interface mediates the connection, ensuring material isolation while keeping the compartment simple and inexpensive.
3Ease of manufacture
If passive latching elements are used instead of powered locking mechanisms, then ease of manufacture and cost are improved, but the force and stability of the connection may worsen
Solution Approach 1:
The passive latching elements are merged with the mechanical attachment interface between the compartment and base unit. The latching mechanism is integrated into the mounting structure, combining the functions of mechanical support and secure fastening into a single unified interface. This integration allows simple passive latching elements to achieve sufficient connection force by leveraging the overall mechanical design of the attachment system rather than relying on complex powered locking mechanisms.
Data Source
AI summary
A 3D printing apparatus is disclosed herein. The 3D printing apparatus comprises a non-powered compartment defining a chamber to contain build material, and a passive latching element connected to a lateral wall of the compartment to be engaged with a complementary latching element of a platform. A drive mechanism of a 3D printing device is engageable with the platform to apply an upward vertical force to the platform to move the platform upwardly. The complementary latching elements are to: passively latch the platform and the compartment together at a latched position such that upward movement of the platform causes upward movement of the compartment until the compartment is restrained at a sealing position; and to passively unlatch the platform from the compartment, upon further upward movement of the platform.