Hollow Needle Tufting for Multi-Color Patterns at Fixed Gauge
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Solution Overview
Problem
Conventional hollow needle tufting machines are limited by the number of colors that can be fed to each needle, requiring increased gauge spacing which affects pattern production and efficiency, and have complex solenoid-controlled systems that increase energy consumption and maintenance costs.
Innovation Solution
A tufting machine with a yarn feed system, jerker modules, and a control system that allows for feeding multiple colors per needle without expanding gauge spacing, using double-acting cylinders and multi-way valves for precise yarn control, and a control system that coordinates the operation of yarn feed, jerker modules, and knife modules to form intricate patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If gauge spacing is increased to feed more colors per needle, then color variety increases, but production rate and pattern capability deteriorate
Solution Approach 1:
The machine divides the color selection function into separate modules - one module per needle position. Each module independently controls which yarn is fed to its needle, allowing multiple colors per needle without requiring increased gauge spacing. This segmentation enables full color control while maintaining original production rates.
2Ease of operation
If solenoid controlled air cylinders are used for each needle, then yarn feeding control improves, but device complexity and energy consumption increase
Solution Approach 1:
The invention combines the yarn selection and feeding functions into integrated modules that work cooperatively. Rather than separate solenoid and air cylinder systems for each needle, the merged module uses a single air cylinder with coordinated solenoid control to manage multiple yarns per needle, reducing overall system complexity while maintaining precise control.
Solution Approach 2:
The air cylinder system is designed to perform multiple functions - both yarn selection and yarn feeding - through coordinated solenoid control. This multi-functional approach eliminates the need for separate dedicated systems, reducing device complexity and energy consumption while maintaining ease of operation.
3Adaptability or versatility
If multiple injectors and solenoid valves are added per needle, then color selection capability improves, but maintenance cost and energy use increase
Solution Approach 1:
The invention extracts and eliminates redundant components from the conventional system. By using a single air cylinder per needle position with coordinated solenoid control, rather than multiple independent injectors and solenoid valves, the system reduces the number of parts that require maintenance while preserving full color selection capability.
4Quantity of substance
If gauge spacing is doubled from 1" to 2" to expand color capacity, then number of colors increases, but pattern production and machine efficiency are limited
Solution Approach 1:
Instead of expanding gauge spacing in one dimension (horizontal distance between needles), the invention adds capacity in another dimension (vertical layering of yarns). Multiple yarns are fed through the same needle position at different times or layers, effectively increasing color capacity without changing the physical gauge spacing, thereby maintaining machine efficiency and pattern production capability.
Data Source
AI summary
A system, apparatus and methods for forming tufted articles can include a hollow needle tufting machine for forming patterned tufted articles including multiple colors of yarns. The hollow needle tufting machine can include a series of hollow needles arranged along a needle bar at a gauge spacing and will receive a series of different color and/or types of yarns from a yarn feed system. A funnel block having a series of funnels configured to receive a series of yarns will be provided adjacent the needle bar for directing selected yarns to a corresponding or associated hollow needle. The hollow needles will be reciprocated into and out of a backing to deliver a series of yarns; and can be engaged by corresponding knives to form tufts of yarns. The knives can be moved between no-cut and cutting positions to form loop and cut pile tufts of yarns in the backing.