Topping Sheet Formation by Pre-Segmentation of Cord Fabric
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for forming a narrow topping sheet for pneumatic tire carcass ply production are inefficient, as they require dividing a wide textile original fabric after it is topped with unvulcanized rubber, which is difficult, or involve setting up a large number of cord bobbins, making the process labor-intensive and not compactly configured.
Innovation Solution
The method involves dividing a wide textile original fabric into narrow sections before topping them with unvulcanized rubber, using a cutting system to ensure consistent width and prevent widthwise displacement, allowing for efficient formation of a narrow topping sheet that can be handled and wound compactly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wide textile original fabric is topped with unvulcanized rubber to form a wide topping sheet, then the topping sheet can be formed efficiently, but dividing this sheet widthwise becomes difficult and the calendar line increases in size widthwise
Solution Approach 1:
The patent divides the wide textile original fabric into multiple narrow textile original fabrics before the topping process. This segmentation allows the calendar line to process narrow fabrics efficiently without requiring a large widthwise size, while still producing the required narrow topping sheets for pneumatic tire carcass ply.
Solution Approach 2:
The patent performs the division of the textile original fabric into narrow sections before the topping operation. This preliminary action eliminates the need to divide the topped sheet later, avoiding the difficulty of cutting through rubber-coated fabric and ensuring clean divisions along the weft yarns.
2Length of moving object
If a wide textile original fabric is divided into narrow sections after topping with unvulcanized rubber, then narrow topping sheets can be formed, but the division process becomes difficult
Solution Approach 1:
The division of the textile original fabric into narrow sections is performed before the topping operation with unvulcanized rubber. This preliminary division ensures that the cutting is done on the plain fabric where it is easy to separate along the weft yarns, rather than attempting to cut through the rubber-coated fabric later.
Solution Approach 2:
The fabric is segmented into narrow sections along the weft yarn directions before topping. This segmentation strategy ensures that each narrow textile original fabric can be independently topped and handled, making the subsequent topping process simpler and the final product easier to manage.
3Length of moving object
If a large number of cord bobbins are used to form a narrow cord original fabric, then a narrow topping sheet can be formed, but labor is required to set the cord bobbins
Solution Approach 1:
Instead of using multiple cord bobbins to create a narrow fabric, the patent segments a single wide textile original fabric into multiple narrow sections after it has been formed. This approach eliminates the need to manually set up numerous cord bobbins, reducing labor requirements while still achieving the desired narrow topping sheet width.
4Productivity
If the textile original fabric is fed without widthwise position control, then the feeding process is simple, but widthwise displacement occurs affecting the narrow topping sheet quality
Solution Approach 1:
The patent incorporates a feedback control system that detects widthwise displacement of the textile original fabric during feeding and automatically adjusts the fabric position to eliminate the displacement. This feedback mechanism maintains consistent topping sheet width without complicating the overall feeding process.
Solution Approach 2:
The patent replaces manual or mechanical widthwise position control with an automated detection and adjustment system. This substitution ensures precise width control of the narrow topping sheet while maintaining the simplicity of the feeding process through automatic operation.
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 approach enables the efficient formation of a narrow topping sheet, reducing labor and space requirements, while ensuring consistent width and quality, facilitating the production of carcass ply for pneumatic tires.
Implementation Method 1
topping at least one surface of the narrow textile original fabric with unvulcanized rubber
Data Source
AI summary
A topping sheet forming method includes: feeding a textile original fabric, obtained by weaving longitudinally aligned tire cords into a cord fabric by use of weft yarns; cutting off the weft yarns at a predetermined widthwise position to divide the textile original fabric into a plurality of narrow textile original fabrics; and topping at least one surface of the narrow textile original fabric with unvulcanized rubber.