Reversing Fiber Placement Head Linear Side Swap Mechanism
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Solution Overview
Problem
Existing fiber placement machines require a 180-degree rotation to reverse direction, increasing material layup time and complicating the fiber delivery path due to the twisting of the fiber path length and orientation.
Innovation Solution
A reversing fiber placement head with a linear side swap roller mechanism that shifts the compaction roller along a linear path, allowing bi-directional fiber placement without rotating 180 degrees, simplifying the fiber path and reducing layup time by maintaining the same orientation relative to the application surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the fiber placement head performs a 180-degree rotation to reverse direction, then the head can apply fiber in opposite directions, but the material layup time increases and the fiber delivery path becomes complicated
Solution Approach 1:
The fiber placement system is segmented into two independent linear feed paths (odd-numbered lane and even-numbered lane) that operate separately. Each path can deliver fiber independently, allowing the system to switch between directions without rotating the entire head assembly. This segmentation enables bidirectional placement while maintaining consistent fiber path geometry.
Solution Approach 2:
Instead of reversing direction through 180-degree rotation in three-dimensional space, the invention transitions to a two-dimensional solution by using lateral switching between parallel linear feed paths. The compaction roller moves laterally between predetermined positions corresponding to different feed paths, eliminating the need for rotational motion and maintaining constant fiber path length and orientation.
2Adaptability or versatility
If the fiber placement head performs a 180-degree rotation to reverse direction, then the head can apply fiber in opposite directions, but the fiber delivery path becomes complicated with dramatic changes in path length
Solution Approach 1:
The fiber delivery system is divided into separate odd and even numbered lanes with dedicated feed mechanisms. Each lane maintains a fixed, simple linear path from the material source to the compaction roller. The lateral shifting mechanism selects which lane is active, keeping each individual path simple and avoiding the complex twisting that would result from head rotation.
3Area of stationary object
If the compaction roller traverses the surface and performs a 180 degree change of direction, then the head can cover the entire surface, but the black side of the fiber is pressed onto the mold surface in one direction and the white side in the opposite direction
Solution Approach 1:
Instead of rotating the head 180 degrees to change direction, the invention inverts the approach by using two parallel linear feed paths positioned laterally. The compaction roller shifts laterally between these paths to change direction, maintaining the same fiber orientation relative to the mold surface in both directions. This lateral switching approach preserves fiber composition consistency while achieving full surface coverage.
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 reduces material layup time and simplifies the fiber delivery path by eliminating the need for 180-degree rotation, ensuring consistent fiber path length and orientation during bi-directional fiber placement.
Implementation Method 1
A compaction roller in a fiber placement head reverses direction from left to right, and then from right to left, without requiring the head to perform a 180 degree rotation
Data Source
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AI summary
A reversing fiber placement head that is capable of bidirectional fiber placement on an application surface (23) includes a feed mechanism for delivering fiber along two feed paths (13, 14) that are in a V-shaped orientation relative to one another. A pressure tip assembly (32) including a compaction roller (16) receives fiber from the two feed paths (13, 14) and applies the fiber to an application surface (23). A shifting mechanism shifts the pressure tip assembly (32) from a first position on the fiber placement head to a second position on the fiber placement head to move the compaction roller (16) along a linear path relative to the fiber placement head, allowing the compaction roller (16) to change its direction of rotation in order to apply fiber to the application surface (23) in opposite directions.