Tufting Machine Backing Feed Control for Woven Pattern Production
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Solution Overview
Problem
Current tufting machines are limited in the complexity and variety of patterns they can produce, requiring costly and labor-intensive machinery to achieve woven looks, and have restricted production rates and high pile heights due to the complexity of pattern attachments and yarn burial methods.
Innovation Solution
A system and method for controlling the backing material feed through a tufting machine using a computer-controlled yarn feed system and motor-driven backing feed rolls, allowing for precise advancement and tension control to create programmed patterns without the need for specialized machinery, enabling the formation of tufted articles with a woven appearance and reduced pile height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pattern attachments such as roll or scroll attachments are used to create programmed designs, then the variety of patterns that can be produced is improved, but the complexity and cost of the tufting machine significantly increase
Solution Approach 1:
The patent extracts the patterning function from complex mechanical pattern attachments and relocates it to a computer-controlled yarn feed system. The controller selectively feeds yarns to individual needles based on digital pattern instructions, eliminating the need for physical roll or scroll attachments while maintaining pattern variety.
Solution Approach 2:
The patent replaces mechanical pattern attachments with an electronic control system that uses a computer or processor to control yarn feeding. This substitution of mechanical systems with electronic control achieves the same patterning effect while significantly reducing machine complexity.
2Adaptability or versatility
If yarns are back-robbed and buried to create pattern effects, then different color yarns can be placed at laterally displaced locations, but higher pile heights are required to cover the buried yarns, adding further costs
Solution Approach 1:
The patent extracts the yarn burial step from the patterning process. By using precise yarn feed control to place yarns only where needed, the system eliminates the need to bury yarns to achieve pattern effects, thereby reducing the required pile height while maintaining pattern versatility.
3Adaptability or versatility
If the primary backing material is shifted laterally to form patterns, then patterned carpets can be produced, but the production rate is limited and the machines are used mainly as specialty machines
Solution Approach 1:
The patent introduces dynamic control of yarn feeding to individual needles based on real-time position feedback from encoders. This dynamic system can rapidly change pattern production without mechanical reconfiguration, enabling both pattern versatility and high production rates in a single machine.
Solution Approach 2:
The patent creates a universal tufting machine that can produce both patterned and non-patterned carpets at high speeds using the same equipment. The computer-controlled yarn feed system can be programmed for different patterns or disabled entirely, making the machine versatile without sacrificing productivity.
4Shape
If weaving looms or other dedicated machinery are used to produce woven carpets with a woven look, then the desired appearance is achieved, but the cost and labor intensity increase significantly
Solution Approach 1:
The patent uses a tufting machine with computer-controlled yarn feeding to copy the appearance of woven carpets. By precisely controlling yarn placement and creating specific stitch patterns, the system reproduces woven looks without requiring actual weaving machinery, significantly reducing cost and labor while achieving the desired aesthetic.
Data Source
AI summary
A method of controlling the feeding of the backing material moving through a tufting machine in order to produce tufted articles such as carpets having a woven look or appearance. The backing material is indexed forwardly along its path of travel through the tufting machine by at least the stitch length for each stitch in a stitch cycle of the programmed pattern. At a desired point in the stitch cycle, the backing material can be indexed forwardly by a greater distance approximately equal to the program stitch length and a calculated jump distance to achieve a desired pattern effect.