3D Filament Mat Cross-Grid Layout for Balanced Tensile Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing three-dimensional filament mats result in uneven tensile strength, with longitudinal strength being significantly higher than transverse strength, affecting the overall structural integrity and efficiency of the product.
Innovation Solution
A method and apparatus utilizing a combined swing odd-even mould plate with leftward and rightward reciprocating motion to form a diamond-shaped grid layout, ensuring even distribution of filament tows to create a uniform cross-grid structure, balancing longitudinal and transverse strengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed machine head and mould plate are used to extrude filament tows with a forming apparatus swinging from side to side, then the filament tows can form a product, but the longitudinal overlapping nodes between filaments are obviously more than transverse overlapping nodes, causing longitudinal strength to be multiple times higher than transverse strength
Solution Approach 1:
The patent applies dynamics by making the machine head and mould plate reciprocate in cross-gridding motion during extrusion, transforming the static fixed-position extrusion into dynamic multi-directional extrusion. This enables filament tows to be deposited in both longitudinal and transverse directions, creating balanced overlapping nodes and achieving uniform tensile strength in all directions.
2Productivity
If the forming apparatus swings from side to side to form filament tows, then the product can be formed, but the longitudinal strength becomes multiple times higher than transverse strength, affecting comprehensive strength
Solution Approach 1:
The patent applies asymmetry by introducing cross-gridding reciprocating motion that creates symmetric force distribution in opposite directions. The machine head and mould plate reciprocate to deposit filaments in alternating leftward and rightward directions, balancing the asymmetric force concentration that previously occurred in single-direction extrusion, thereby achieving uniform comprehensive strength.
3Manufacturing precision
If multiple rows of filament tows form a diamond-shaped grid layout with cross-gridding reciprocating motion, then the structure becomes a uniformly regular cross-grid structure, but the device complexity increases with left and right swing devices
Solution Approach 1:
The patent applies merging by combining the machine head and mould plate into a reciprocating assembly that moves together in cross-gridding motion. This integrated design allows both components to participate in the reciprocating motion simultaneously, achieving precise cross-gridding filament deposition without requiring separate complex control mechanisms for each component.
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
The method achieves balanced longitudinal and transverse tensile strengths, reducing material usage and energy consumption while enhancing product competitiveness.
Implementation Method 1
a plastic raw material is plasticized by an extruder
Implementation Method 2
plasticized by an extruder
Implementation Method 3
odd-numbered rows and even-numbered rows of the combined swing odd-even mould plate regularly swing leftward and rightward respectively
Implementation Method 4
the three-dimensional filament mat is formed after cooling and curing
Implementation Method 5
the three-dimensional filament mat is formed after cooling and curing
Data Source
AI summary
The present invention provides a method for preparing three-dimensional filament mats by machine head and mould plate cross-gridding reciprocating motion and an apparatus thereof. According to a gridding effect, one row of filament tows, among a plurality of rows of filament tows, are swung leftward and another row of filament tows adjacent to said row are swung rightward to form a diamond-shaped grid layout in the air. When the diamond-shaped grid layout falls on a rotating forming roll (13), diamond-shaped grid nodes are bonded and cured, so that the overall structure of a three-dimensional filament mat becomes a uniformly regular cross-grid structure. Therefore, the transverse strength of a product is controlled, raw materials are reduced, energy consumption is reduced, and the market competitiveness of the product is improved.