Cutting device and method for severing non-woven-in sections of threads or filaments woven in textile ribbons
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods fail to effectively sever non-woven-in sections of metallized threads or filaments from quasi-endless textile ribbons without damaging the fabric or leaving long loose ends, which can disrupt RFID functionality.
Innovation Solution
A cutting device with two cutting assemblies and sliding spacers, kinematically connected via a tool connecting assembly, that conveys and adjusts to sever the metallized threads or filaments by sliding spacers between the thread and fabric, allowing precise cutting without damaging the fabric and minimizing loose ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional cutting methods are used to sever metallized threads from textile ribbons, then the cutting action can be performed, but the metallized threads cannot be cleanly separated from the fabric without leaving long loose ends or damaging the fabric
Solution Approach 1:
The cutting device is divided into multiple independent cutting assemblies (at least two cutting assemblies spaced apart along the conveying direction), each capable of performing cutting action on different sections of the metallized thread. This segmentation allows simultaneous cutting at multiple points, improving precision while preventing fabric damage through distributed cutting forces.
Solution Approach 2:
Sliding spacers are introduced as intermediary elements between the cutting assemblies and the textile ribbon. These spacers slide along the ribbon surface and facilitate the cutting action by guiding the cutting blades, ensuring clean separation of the metallized thread from the fabric without causing damage to either the fabric or leaving excessive loose ends.
2Device complexity
If a single cutting assembly is used, then the device complexity is reduced, but the ability to simultaneously cut multiple sections and maintain cutting precision is compromised
Solution Approach 1:
Multiple cutting assemblies are merged into a single integrated device with common support structures and control mechanisms. The cutting assemblies are kinematically connected via tool connecting assemblies (spindles or shafts), allowing them to operate simultaneously with coordinated precision while sharing structural components, thus balancing device complexity with cutting precision.
Solution Approach 2:
The cutting device incorporates adjustable positioning mechanisms that allow the cutting assemblies to be dynamically positioned and adjusted in the conveying direction. This dynamic adjustability enables precise positioning of multiple cutting assemblies to match the pattern of metallized threads, ensuring simultaneous cutting precision while maintaining reasonable device complexity through flexible configuration.
3Device complexity
If the cutting assemblies are fixed in position, then the device structure is simplified, but the adaptability to different ribbon configurations and thread positions is reduced
Solution Approach 1:
The cutting assemblies are equipped with adjustable positioning mechanisms that allow them to be moved and repositioned along the conveying direction. The tool connecting assemblies (spindles or shafts) provide kinematic connections that enable dynamic adjustment of cutting assembly positions, allowing the device to adapt to different ribbon configurations and thread patterns while maintaining a relatively simple overall structure.
Solution Approach 2:
The cutting device is designed with universal features that allow it to handle various ribbon configurations and metallized thread arrangements. The adjustable cutting assemblies and sliding spacers can be repositioned to accommodate different cutting patterns, making the device versatile for multiple applications without requiring completely different device structures for each configuration.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A cutting device includes a ribbon conveying table configured to convey a textile ribbon having a metallized thread or filament quasi-endlessly woven/non -woven in the fabric of the ribbon; at least two cutting assemblies spaced apart from one another along the conveying direction of the textile ribbon, the at least two cutting assemblies being configured to simultaneously perform a cutting action for severing a non-woven-in section of the metallized thread or filament from the fabric of the ribbon and at least two sliding spacers spaced apart from one another along the conveying direction of the textile ribbon, the at least two sliding spacers each being connected to a respective one of the at least two cutting assemblies, contacting the surface of the ribbon and being configured to slidingly move between the metallized thread or filament and the fabric of the ribbon at the edges of the non-woven-in sections to facilitate the cutting action of the at least two cutting assemblies.