Filament Winding Apparatus Hoop Winding Device
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Solution Overview
Problem
Conventional filament winding apparatuses require a significant amount of time for hoop winding, which hampers the manufacturing of pressure containers and similar products, as they use a single winding head for both hoop and helical winding processes.
Innovation Solution
A filament winding apparatus equipped with a dedicated hoop winding device featuring a rotatably-driven disc-shaped wrapping table, multiple bobbins arranged at equal intervals, a guide member, a tensor for adjusting fiber bundle tension, a resin application device, and an adhesion sensor, allowing for simultaneous high-speed winding of fiber bundles onto a mandrel without rotating the mandrel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single winding head is used for both hoop winding and helical winding, then device complexity is reduced, but productivity decreases due to the time required to switch between winding operations
Solution Approach 1:
The patent divides the winding system into separate functional modules: a dedicated hoop winding device with multiple bobbins arranged on a wrapping table, and a helical winding device. This segmentation allows each device to be optimized for its specific function, enabling high-speed hoop winding without interfering with helical winding operations, thus resolving the contradiction between productivity and device complexity.
Solution Approach 2:
The wrapping table serves multiple functions: it supports multiple bobbins for simultaneous fiber bundle supply, provides a rotation mechanism for high-speed hoop winding, and coordinates with the helical winding device. This multi-functionality allows the system to achieve high productivity through dedicated hoop winding while maintaining integrated operation with helical winding, addressing the productivity-device complexity contradiction.
2Productivity
If high-speed hoop winding is performed, then productivity increases, but manufacturing precision may deteriorate due to reduced time for tension control and resin application
Solution Approach 1:
The patent implements preliminary action by pre-adjusting the tensor device to maintain appropriate back tension on fiber bundles before high-speed winding begins. The resin application device is also pre-positioned and pre-configured to apply resin at the correct rate and location. These preliminary preparations ensure that even at high winding speeds, the fiber bundles maintain proper tension and resin adhesion, preserving manufacturing precision while achieving high productivity.
Solution Approach 2:
The patent incorporates feedback mechanisms through sensors that monitor fiber bundle tension, resin application quality, and winding parameters in real-time. This feedback allows the control system to dynamically adjust tensor force, resin flow rate, and wrapping table rotation speed to maintain optimal winding quality during high-speed operation, resolving the contradiction between productivity and manufacturing precision.
3Productivity
If multiple bobbins are arranged on the wrapping table, then productivity increases through simultaneous fiber bundle supply, but device complexity increases
Solution Approach 1:
The patent merges multiple fiber bundle supply functions into a single integrated wrapping table structure that accommodates multiple bobbins. Instead of having separate supply mechanisms for each fiber bundle, all bobbins are mounted on the same rotating table, which provides unified support, rotation, and positioning. This merging approach enables simultaneous supply of multiple fiber bundles (increasing productivity) while using a consolidated structure (managing device complexity).
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 solution enables efficient hoop winding in a short period, enhancing productivity and reducing manufacturing costs by applying appropriate tensile force and stabilizing resin adhesion, while minimizing maintenance issues.
Implementation Method 1
A tensor that adjusts a tensile force of the fiber bundle is arranged on the wrapping table facing a movement path of the fiber bundle between the bobbin and the mandrel
Implementation Method 2
an adhesion sensor that detects an adhesion state of the resin on the fiber bundle
Data Source
AI summary
A filament winding apparatus includes a hoop winding device and a helical winding device. The hoop winding device includes a disc-shaped wrapping table, a drive mechanism that rotatably drives the wrapping table, four bobbins supported along a peripheral edge of the wrapping table, and a guide member that moves and guides a fiber bundle fed from the bobbin to a mandrel arranged in an insertion hole of the wrapping table. The bobbin is axially supported in a freely rotatable manner with a chuck of a holder fixed to the wrapping table. A ratchet mechanism, which prevents over-rotation in a fiber bundle feeding direction of the bobbin, is arranged between the holder and the chuck.