Winding Device Injector Slit Suction for Rigid Fiber
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Solution Overview
Problem
Existing winding devices face difficulties in automating bobbin changes, particularly with rigid and coated multifilament fiber strands, as they struggle to safely sever and pick up these fibers without operator intervention.
Innovation Solution
The injector device features a slit-shaped suction opening aligned with the fiber strand, partially covered by a knife, which generates a concentrated suction flow to reliably grip and cut the fiber strand, allowing for automated bobbin changes without additional auxiliary devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional suction opening is used to pick up the fiber strand, then the suction flow is dispersed and cannot reliably grip rigid fiber strands, but increasing the suction opening size or changing its configuration may interfere with the cutting operation or reduce suction concentration
Solution Approach 1:
The suction opening is segmented into two distinct functional zones: a slit-shaped suction opening for concentrated suction flow and grip, and a separate cutting edge positioned adjacent to it. This segmentation allows each zone to optimize its specific function without interfering with the other, resolving the contradiction between reliable pickup and device complexity.
Solution Approach 2:
The suction opening is designed with locally optimized geometry - a narrow slit shape that concentrates the suction flow precisely where needed for gripping the fiber strand. This local quality enhancement at the suction opening, combined with the adjacent cutting edge, enables reliable pickup of rigid fibers without requiring complex overall device configuration.
2Ease of operation
If the suction opening is positioned to catch the fiber strand, then rigid fiber strands cannot be reliably gripped due to dispersed suction flow, but moving or enlarging the suction opening may interfere with the cutting operation
Solution Approach 1:
The suction opening and cutting edge are merged into a single integrated component structure where the slit-shaped suction opening and the cutting edge work in close proximity. This merging allows the concentrated suction flow to grip the fiber strand immediately before the cutting edge severs it, enabling easy automated bobbin change without compromising cutting precision.
Solution Approach 2:
The suction opening performs a preliminary gripping action on the fiber strand immediately before the cutting edge severs it. This preliminary action of concentrating suction flow to secure the fiber strand ensures that the subsequent cutting operation can proceed with high precision, facilitating smooth automated bobbin changes.
3Extent of automation
If additional auxiliary devices are added to handle rigid fiber strands, then the automation of bobbin change can be improved, but the device complexity increases
Solution Approach 1:
The injector device is designed with multi-functionality, combining both the suction opening for gripping fiber strands and the cutting edge for severing them within a single integrated component. This universal design eliminates the need for separate auxiliary devices to handle rigid fiber strands, maintaining high automation while reducing overall device complexity.
Solution Approach 2:
The injector device performs self-service by integrating both suction and cutting functions into one component. The slit-shaped suction opening and cutting edge work together autonomously to handle rigid fiber strands without requiring additional auxiliary devices, thereby achieving full automation with minimal 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
This solution enables safe and efficient automated bobbin changes for various fiber strand materials, including stiff ones, by ensuring the fiber strand is directly caught by the suction flow and cut at the suction opening, eliminating the need for operator intervention.
Implementation Method 1
the suction flow generated at the suction opening can occur in a highly concentrated and directed manner
Data Source
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AI summary
The invention relates to a winding device for winding a fiber strand (15) into a bobbin (16), the winding device having a bobbin holder (1) for holding a bobbin tube (19). The bobbin holder (1) is pivotably arranged in a machine frame and can be led into a release position for a bobbin change. Furthermore, a traversing device (7) is provided for laying the fiber strand (15) on the bobbin (16), and an injector apparatus (17) is provided for cutting and suctioning the fiber strand (15) during a bobbin change. According to the invention, in order to cut and suction the fiber strand (15) during a bobbin change, the injector apparatus (17) is designed having a slot-shaped suction opening (17.2), which extends in the thread running direction of the fiber strand (15) running onto the bobbin (16). Thus, in particular rigid and flexurally stiff fiber strands also can be sucked in.