Filament Winding Bobbin Replacement With Intermediate Storage
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Solution Overview
Problem
Existing filament winding devices require stopping the rotation of bobbins to connect end portions of fiber bundles wound on different bobbins, disrupting continuous fiber supply during the winding process.
Innovation Solution
A filament winding device with a bobbin supporting shaft that allows for continuous fiber supply by using a reserve bobbin and a fiber bundle storage unit with a switching mechanism to temporarily store and supply fibers, enabling connection of end portions without stopping the bobbins during winding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the end portions of fiber bundles wound on different bobbins are connected by adhering and fixing them together, then continuous fiber supply can be achieved after one bobbin becomes empty, but the rotation of the bobbins must be stopped during adhesion and fixation, causing temporary interruption of fiber supply
Solution Approach 1:
A storage unit is introduced as an intermediary between the bobbins and the winding unit. The storage unit temporarily holds fiber bundles, allowing adhesion and fixation operations to be performed on rotating bobbins without interrupting the continuous supply of fibers to the winding unit. This mediator decouples the stopping requirement from the fiber supply chain.
Solution Approach 2:
Fiber bundles are pre-stored in the storage unit before being supplied to the winding unit. This preliminary storage allows the system to prepare for adhesion operations in advance, so that when adhesion is needed, the winding unit continues to receive fibers from the storage unit while the bobbins are stopped for connection.
2Reliability
If the bobbins are stopped for adhesion and fixation of fiber bundle end portions, then proper connection can be achieved, but the fiber supply to the winding unit is temporarily interrupted
Solution Approach 1:
The storage unit serves as a buffer that decouples the stopping of bobbins for adhesion from the continuous operation of the winding unit. While bobbins are stopped for reliable connection, the storage unit continues to supply fibers, preventing time loss in the winding process.
Solution Approach 2:
The storage unit is filled with fiber bundles in advance to cushion against the interruption caused by bobbin stopping. This pre-prepared inventory ensures that the winding unit never experiences a shortage of fibers during adhesion operations.
3Productivity
If a reserve bobbin is introduced to continue fiber supply after the supplying bobbin becomes empty, then continuous production can be maintained, but the complexity of the bobbin support system increases
Solution Approach 1:
The bobbin support shaft is designed to universally support multiple bobbins (supplying bobbin and reserve bobbin) with the same structural interface. This multi-functional design allows seamless replacement between bobbins without requiring different support mechanisms, minimizing the increase in system complexity.
Solution Approach 2:
The support structures for the supplying bobbin and reserve bobbin are merged into a single integrated bobbin support shaft system. This combination reduces the number of separate components and simplifies the overall structure while enabling continuous production through bobbin replacement.
Data Source
AI summary
A filament winding device includes: a helical winder which winds a fiber bundle around a liner; a bobbin supporting shaft which rotatably supports a bobbin for providing the fiber bundle to the helical winder and a bobbin different from the bobbin in a state in which winding-initiation ends of the fiber bundle wound around the bobbin and winding-termination ends of the fiber bundle wound around the bobbin connect to each other; and a fiber bundle storage unit. The fiber bundle storage unit has a stopper which can switch the fiber bundle storage unit between a storage state in which the fiber bundle is stored in the fiber bundle storage unit and a storage-released state in which the fiber bundle has been released from storage in the fiber bundle storage unit and the fiber bundle is supplied from the fiber bundle storage unit to the helical winding unit.