Drop Stitch Fabric Tether Alignment Using Differential Layer Velocity
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Solution Overview
Problem
In the manufacturing of inflatable drop stitch products, the layers of the drop stitch fabric often become offset during processing, leading to misaligned tethers, which result in wrinkles, distortions, and an altered shape of the final product due to unintentional displacement during handling.
Innovation Solution
A method is introduced where the first and second layers of the drop stitch fabric are fed at different velocities to compensate for potential displacement and misalignment, ensuring the tethers remain perpendicular to the layers, thereby preventing wrinkles and distortions in the final product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the drop stitch fabric is handled during manufacturing, then the fabric can be processed into desired shapes, but the layers become offset relative to one another causing tether misalignment
Solution Approach 1:
A velocity controlling unit is introduced as an intermediary device between the fabric supply and processing machine. This controller mediates the feeding process by independently adjusting the velocity of each layer, preventing direct offsetting that occurs during conventional handling while enabling continued processing flexibility.
Solution Approach 2:
The patent changes the velocity parameter of each layer independently during the feeding process. By adjusting the feeding velocity of the first and second layers differently, the system compensates for offset tendencies and maintains tether alignment throughout manufacturing operations.
2Device complexity
If the layers are fed at the same velocity, then the feeding process is simple, but the tethers become misaligned when layers are displaced
Solution Approach 1:
The velocity controlling unit enables the system to self-correct layer displacement by automatically adjusting individual layer velocities. The controller monitors and compensates for offset in real-time, allowing the fabric feeding system to maintain alignment without external intervention or complex mechanical guidance structures.
3Ease of operation
If the layers are offset during handling, then the fabric can be maneuvered, but wrinkles and distortions arise in the final product
Solution Approach 1:
The velocity controlling unit performs preliminary alignment by adjusting layer velocities before the fabric reaches the processing stage. This preemptive correction prevents offset accumulation that would otherwise lead to wrinkles and shape distortions during subsequent handling and manufacturing operations.
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
The present disclosure relates to a method performed by an alignment system (10) for aligning tethers (2) of a drop stich fabric (1) prior to feeding the drop stitch fabric to a drop stich fabric processing machine (3). The alignment system feeds (1001) a drop stitch fabric having a first layer (11) and a second layer (12) tethered by drop stitch tethers, wherein the first layer is moving with a first velocity (110) and the second layer is moving with a second velocity (120). The disclosure also relates to an alignment system in accordance with to the foregoing.