Laminated Compound Construction via Selective Hardening
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Solution Overview
Problem
Current methods for constructing laminated compounds using particle material are limited by the size of the container, leading to inefficiencies in material utilization, precision issues, and increased technical complexity due to the need for building platforms that can be lowered, which results in excessive weight and sealing challenges.
Innovation Solution
A method where layers of particle material are deposited and hardened in predetermined areas using a dispensing device with an elongated opening that can be systematically switched on and off, allowing for the construction of large and heavy moulds without the need for an outer edge enclosure, with the dispensing device moving vertically to adjust layer thickness and the building platform remaining stationary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If a container with fixed size is used to enclose the building platform, then particle material can be contained, but the maximum component size is limited and material utilization efficiency decreases
Solution Approach 1:
The patent applies the dynamics principle by making the container wall movable instead of fixed. The container wall can be extended in the vertical direction to accommodate larger components as layers are deposited, transforming the static container into a dynamic structure that adapts to the growing component size. This resolves the contradiction by allowing both large component sizes and efficient material utilization through the ability to adjust container height as needed.
2Manufacturing precision
If the building platform is lowered to deposit new layers, then layer thickness can be controlled, but sealing complexity and risk of jamming increase
Solution Approach 1:
The patent applies the inversion principle by reversing the traditional approach: instead of lowering the building platform to deposit new layers, the container wall is extended upward to accommodate the new layer. This inverts the motion direction and eliminates the need for complex sealing mechanisms between the platform and container wall, while still maintaining precise layer thickness control through controlled extension of the container wall.
3Productivity
If the building platform is lowered continuously, then layer deposition can proceed, but the weight to be moved increases excessively
Solution Approach 1:
The patent applies the inversion principle by extending the container wall upward instead of lowering the building platform. This reverses the direction of motion and keeps the building platform stationary at its original position, thereby maintaining constant weight and eliminating the increasing friction and power requirements associated with continuously lowering a越来越重的 platform.
4Reliability
If the container wall is sealed against the building platform, then particle material flow is prevented, but the platform may jam against the wall
Solution Approach 1:
The patent applies the inversion principle by extending the container wall upward rather than sealing it against the building platform. This eliminates the contact interface between the platform and container wall, preventing jamming while still containing particle material through the extended wall structure. The platform can move freely without interference, maintaining ease of operation while ensuring reliable particle containment.
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 approach enables the construction of large and heavy moulds with minimal material waste and flexible size adjustments, reducing the need for complex sealing and weight adjustments, while maintaining precision and efficiency in material utilization.
Implementation Method 1
a layering unit with an elongated dispensing opening for the particle material, which is open at the bottom
Implementation Method 2
particle material can be deposited layer by layer through laser sintering on a building platform determined by the working field, and then by means of selectively applied laser radiation selectively hardened
Implementation Method 3
the hardening of the particle material is achieved by the selective application of a binding agent to the layers of particle material
Data Source
AI summary
A method or procedure for the construction of a laminated compound or mould made up of a number of layers of particle material on top of each other, which are hardened and joined to each other in predetermined onsite areas, which can differ from each other depending on position and expansion, so that from the predetermined hardened areas of the laminated compound at least one mould is formed. The layers are deposited individually one after another in predetermined layer thickness by the dispensing of particle material from a dispensing device during its movement above a working field and according to computer data in predetermined areas.