Bobbin Yarn Cutting Device with Movable Gate to Eliminate Entanglement
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Solution Overview
Problem
Existing bobbin supply devices face challenges in reliably eliminating entanglement of unwound yarns from multiple bobbins, leading to difficulties in smooth conveyance and increased device size due to the use of rocking members for yarn conveyance.
Innovation Solution
A cutting device is integrated into the bobbin movement path with a movable limiting section and cutting sections that intersect the path, allowing for selective passage and cutting of entangled yarns, combined with a suction system and guide recesses to ensure efficient yarn handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rocking member is used to convey a predetermined quantity of bobbins, then the bobbins can be individuallyized and conveyed, but the device size increases and the configuration becomes complex
Solution Approach 1:
The patent extracts the cutting function from the conveying mechanism by providing a separate cutting device with a cutter that operates independently from the bobbin conveying path. This eliminates the need for complex rocking members while maintaining individualization capability through the cutting action that separates entangled bobbins
Solution Approach 2:
The patent segments the bobbin handling process into distinct functions: conveying bobbins along a movement path and separately cutting entangled yarns. This segmentation allows simple conveyance mechanisms to work effectively without requiring complex integrated systems
2Productivity
If the cutter is arranged on the opposite side of the staying part with the rocking member interposed, then the rocking operation can convey bobbins, but the cutter cannot effectively cut the unwound yarn of bobbins staying in the staying part
Solution Approach 1:
The patent introduces an intermediary cutting device positioned at a specific location along the bobbin movement path that acts as a mediator between the conveying system and the bobbins. The cutter is arranged to intercept and cut entangled yarns without interfering with the normal conveying operation, solving the spatial arrangement problem
3Quantity of substance
If a large number of feed yarn bobbins are gathered in excess of the conveyance plate size with strong entanglement, then the bobbins become lumped and difficult to place on the rocking member, but reducing the number of bobbins limits the conveying capacity
Solution Approach 1:
The patent applies preliminary action by cutting the entangled yarns before the bobbins are placed on the conveying mechanism. The cutting device operates on bobbins along the movement path to separate entanglements in advance, ensuring that bobbins can be smoothly conveyed without lumping issues regardless of the initial quantity gathered
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 effectively eliminates yarn entanglement, facilitates smooth bobbin conveyance, and reduces device size by allowing for reliable cutting and stabilization of yarns, improving handling and alignment of bobbins.
Implementation Method 1
a suction port 51 that sucks the unwound yarn 25, and a suction source 60 that supplies a negative pressure to the suction port 51
Data Source
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AI summary
A state where unwound yarns extending from a plurality of bobbins are entangled is reliably eliminated. An upstream cutting device (13) is provided in a movement path (10) on which a plurality of yarn supplying bobbins (7) wound with yarns move. The upstream cutting device (13) includes a gate section (31) and an upstream cutting section (36). The gate section (31) is provided so as to be movable in a direction intersecting a moving direction of the yarn supplying bobbin (7) with respect to a path surface (21a) of the movement path (10). This movement can limit passage of the yarn supplying bobbin (7) on the movement path (10). The upstream cutting section (36) cuts the unwound yarn (25) unwound and extended from the yarn supplying bobbin (7). The yarn being cut straddles the gate section (31).