Vacuum Draping Device for Fiber-Reinforced Components
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Solution Overview
Problem
The production of fiber-reinforced components is labor-intensive due to the manual placement and draping of fiber layers, despite some automation in transporting these layers to mold cores.
Innovation Solution
A device with a positionable base frame, a controllable holding device, and a draping device equipped with a stretchable draping layer that uses vacuum technology to grasp, transport, and drape reinforcing fiber layers onto mold cores, allowing for flexible shaping and reduced manual effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual placement and draping of fiber layers is used, then flexibility in shaping and accommodating complex geometries is achieved, but labor intensity and production time increase significantly
Solution Approach 1:
The vacuum system automatically performs the draping function that would otherwise require manual intervention. The vacuum holds the fiber layers in place and facilitates their conforming to the mold core geometry without requiring manual positioning or securing operations
Solution Approach 2:
The patent replaces manual mechanical draping operations with a vacuum-based system. The vacuum pressure differential automatically performs the draping function, eliminating the need for manual manipulation while maintaining the ability to accommodate complex geometries and undercuts
2Productivity
If automated transport of fiber fabric layers is implemented, then transportation efficiency improves, but manual steps for placement and draping remain necessary
Solution Approach 1:
The patent combines the transport function with the draping function into a single integrated system. The same vacuum mechanism that transports the fiber layers also performs the draping operation, eliminating the need for separate manual placement steps and achieving complete automation of both functions
Solution Approach 2:
The vacuum system serves multiple functions: it transports the fiber layers, holds them during positioning, and performs the draping operation. This multi-functional approach eliminates the need for separate automated transport equipment and manual draping operations
3Adaptability or versatility
If vacuum draping is applied to accommodate various shapes and undercuts, then geometric versatility improves, but device complexity increases
Solution Approach 1:
The patent uses a flexible draping layer that can conform to any mold core geometry, including complex shapes and undercuts. This flexible membrane approach allows geometric versatility without requiring complex mechanical adjustment mechanisms, as the vacuum pressure differential automatically adapts the layer to the desired geometry
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 solution significantly reduces manual labor in producing fiber-reinforced components by enabling the simultaneous transportation and draping of fiber layers, accommodating various shapes and undercuts, and allowing for the production of components with complex geometries with increased efficiency and cost-effectiveness.
Implementation Method 1
a vacuum can then be applied to the mold, whereby a liquid resin is sucked into the interior of the mold, where it saturates the fiber fabric mats present there
Implementation Method 2
the draping device comprising a stretchable draping layer, and the draping layer being movable between a rest position and a working position
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
The device (1) has a controllable holding device provided on a positionable base frame (3) and configured for gripping and holding a reinforced fiber layer (5). A draping device is provided on the base frame such that the reinforced fiber layer is draped onto a mould core via application of vacuum. The holding device includes a set of vacuum pumps that are operated utilizing compressed air and produce vacuum using Bernoulli effect. The draping device includes a stretchable draping layer that is movable between a stationary position and a working position. An independent claim is also included for a method for manufacturing fiber-reinforced components.