Product Introduction

Junhe JH-W3H Tension-Free Weft Feeder (Synchronous Weft Feeder) is a core supporting equipment specially designed for the weaving of high-end ultra-fine denier fabrics. Relying on Junhe's years of experience in R&D and production of weft feeders/accumulators, it innovatively develops the core technology of tension-free weft storage, abandoning the passive weft pulling mode of traditional weft feeders. It adopts an innovative method of active weft feeding and motor synchronous release to realize whole-process zero/micro-tension conveying of weft yarn, with tension fluctuation controlled within ±5%. The product is exclusively designed for high-end fabrics such as 20D fine filament nylon, ultra-thin down jacket fabrics, and high-elastic yarns. During high-speed weaving, it effectively avoids yarn abrasion, weft breakage, and fuzzing issues, significantly increases weaving speed, ensures a smooth fabric surface and uniform dyeing without shade variation. It is an exclusive adaptive equipment for the efficient production of high-end nylon fabrics and high-elastic fabrics, perfectly solving the tension fluctuation pain point of conventional weft feeders in high-end fabric weaving.

Application

1. Ultra-fine denier high-end fabric weaving: Specially designed for 20D fine filament nylon and ultra-thin down jacket fabrics, adapting to the production of various ultra-fine denier, low-count high-end chemical fiber fabrics
2. High-elastic yarn fabric processing: Solving the shade variation problem of high-elastic yarns during high-speed weaving, suitable for the weaving of high-elastic fashion fabrics, stretch casual fabrics and other products
3. High value-added worsted fabric production: Adapting to products with strict requirements for fabric quality and yarn integrity such as high-end shirting fabrics and high-end decorative fabrics
4. High-speed water-jet/air-jet loom matching: Deeply compatible with mainstream high-end high-speed water-jet and air-jet looms, realizing tension-free precision conveying and control of weft yarns
5. Multi-variety high-end flexible weaving: Supporting tension-free conveying of different types of high value-added weft yarns, adapting to the multi-variety small-batch production needs of high-end fabrics in textile mills

Main Functions

1. Adopting tension-free weft storage core technology, conveying weft yarn with zero/micro tension throughout the whole process, tension fluctuation ≤±5%, completely avoiding yarn stretching and abrasion.
2. Innovative active weft feeding mode, with motor synchronously releasing weft yarn, replacing the traditional passive weft pulling method, fundamentally solving weft breakage and fuzzing problems, reducing the weft breakage rate by more than 80%.
3. Yarn loop separation structure design with flexibly adjustable spacing and diameter, adapting to tension-free stable conveying of weft yarns of different specifications from 20D to 900D.
4. Equipped with high-precision photoelectric components for real-time precise control of weft storage volume, combined with variable frequency speed regulation technology, ensuring precise synchronization of weft supply and weaving.
5. Adapting to the working conditions of high-humidity and dusty textile workshops, core components are specially protected, and the friction-free weft feeding design greatly reduces equipment failure rate.
6. Deeply compatible with Junhe A2/A3/A4/A6 series integrated electronic control systems, supporting precise control via intelligent terminal, realizing coordinated adjustment of pattern and weft feeding.
7. The tension-free conveying design increases weaving speed, significantly improving the weaving efficiency of high-end fabrics compared with traditional weft feeders, ensuring a smooth and defect-free fabric surface.
8. Compatible with multi-color weft selection function, adapting to tension-free weaving of high-end multi-color pattern fabrics, meeting the production needs of high-end fabrics with complex patterns.

Product Parameters

Differences Between Tension‑Free Weft Accumulator And Conventional Weft Accumulator

FAQ

Q1: What specific production losses can be reduced by using the JH-W3H tension-free weft feeder?

A: It can significantly reduce the loss of weft breakage, fuzzing, and hairiness of fine denier yarns, with the weft breakage rate reduced by more than 80%. At the same time, it reduces dyeing shade variation and fabric defects of high-end fabrics caused by uneven tension, greatly improving the first-grade rate of finished products.

Q2: Does tension-free weft feeding actually help to increase the weaving speed of the loom? What is the maximum improvement?

A: It has significant practical improvement. Without friction resistance and tension damage, the loom can stably increase the speed to 120%-150% of the conventional model, adapting to the high weft feeding speed of 3000 meters per minute, directly improving the production efficiency of high-end fabrics.

Q3: Is parameter adjustment complicated when switching between different weft yarn types such as 20D fine filament and high-elastic yarn?

A: Parameter adjustment is extremely simple. Relying on the intelligent terminal and variable frequency synchronous control, you only need to select the corresponding yarn type, and the system automatically matches the weft feeding speed and tension parameters. Style changeover time is ≤1 minute, without affecting the production rhythm.

Q4: Will the frictionless transmission structure affect the positioning accuracy of the weft yarn and cause weft skew on the fabric surface?

A: No. The equipment is equipped with high-precision photoelectric detection and closed-loop synchronous control to calibrate weft storage volume and release rhythm in real time. Weft positioning accuracy is within ±0.1mm, and the weft skew rate is ≤0.3% during high-speed weaving, which is better than the industry standard.

Q5: What are the noise and vibration levels during equipment operation? Can it adapt to dust-free high-standard production workshops?

A: Adopting frictionless transmission and silent motor design, operating noise is ≤60dB with minimal vibration. Core components are fully enclosed and protected, which is not only suitable for the high-humidity and dusty environment of textile workshops but also meets the requirements of dust-free and high-standard production workshops.

Q6: Compared with traditional weft feeders, how much can the long-term comprehensive operating cost of JH-W3H be reduced?

A: Comprehensive operating cost is reduced by 40%-55%, including 15%-20% energy saving benefits, more than 45% reduction in maintenance costs, plus the increased benefits from improved product yield. The long-term payback period of the equipment is only 8-12 months.

Q7: What protection mechanisms for the loom and yarn does the system have when yarn jamming or abnormal weft breakage is detected?

A: It has a built-in intelligent monitoring and emergency stop protection mechanism. When an abnormality is detected, it immediately pauses weft feeding and gives a synchronous audible and visual alarm to avoid loom overload operation and secondary yarn damage. After the fault is cleared, it can resume normal operation with one key.

Q8: For 560cm ultra-wide width looms, how does this weft feeder ensure overall weft feeding stability?

A: It supports multi-unit synchronous collaborative control, can automatically allocate weft feeding points according to the ultra-wide width, and cooperates with variable frequency precision speed regulation to ensure that weft tension is completely consistent across all areas of the ultra-wide fabric surface, without local tension differences.

Q9: What is the daily maintenance cycle of this equipment? Is maintenance operation difficult?

A: The maintenance-free period for core components is ≥18 months. Daily maintenance only requires regular inspection of equipment parameters and simple calibration, without complex disassembly operations, greatly reducing the labor and time costs of later maintenance.

Q10: Can existing Junhe JH-W3L equipment be directly upgraded to the JH-W3H tension-free model? How is compatibility?

A: Seamless upgrade is supported. Only the main body of the weft feeder needs to be replaced. The supporting electronic control interface is fully compatible with Junhe's full range of A2/A3/A4/A6 electronic control systems. There is no need to modify the core structure of the loom, allowing quick completion of the high-end upgrade.