Electrical/Automatic Wire Twisting Machine

DT2005 precision CNC composite twisting machine is a new type of composite twisting machines which the factory introduced the international advanced technology to develop successfully.By using the one-step twisting process of the upper first twist,assembling,lower after twist in the opposite direction,the finished yarn can reach the highest international quality standards and can be produced to some high value-added products.

High quality yarn

The winch roller driven single spindle,more accurate yarn twist,no external force extrusion,more rounded cross section;

First twist,compound twist through computer control,touch screen easy to operate;

On spindle speed computer tracking display,ensure accurate initial compound twist;

No oil imported materials of high speed steel making,reduce yarn breakage;

NC constant tension winding,ensure the constant line speed,volume weight up to 1.6kg;

Twist C.V≤1.5%,meet the requirements of the highest quality yarn.

Ply count range:

2×1: 50D—500D

3×1: 50D—1000D

Products apply for sewing,embroidery,bonded thread.

The common fabrics defects produced by air-jet looms are weft shrinkage, hundred feet, double weft and dense road. These common faults are the main factors affecting the weaving efficiency of air-jet looms. Netizens have analyzed the causes of these defects and put forward corresponding solutions, hoping to give you some inspiration.

Weft shrinkage

origin

Compressed air is impure, which can easily cause blockage of air passage, resulting in instability of air supply pressure and weft contraction due to uneven weft flight. Leakage of air passage components such as trachea, joint and control valve causes air pressure instability, which also affects the normal flight of weft yarn. —— Hey Hakungfu

The weft shrinkage will be caused by improper release time of retaining needle, inaccurate opening and closing time of nozzle solenoid valve and too high or too low pressure of nozzle, which will result in weft crowding before and after flight, weft can not fly straight through the shuttle, weft shrinkage will be caused by the late closing time of right winch, weft shrinkage will occur if weft insertion time is too early and weft opening height is insufficient, otherwise, weft insertion will be too late and weft arrival will be caused by weft shrinkage. Late angle, small opening height, and the end of weft yarn collides with warp yarn, which results in weft shrinkage. In addition, weft shrinkage will also occur if the injection time is not properly matched. —— Alpine running water

The low temperature and humidity in the workshop, the relative increase of elasticity between fibers and the decrease of friction force promote the increase of reverse twist and twist force to form weft shrinkage. —— Dragon Cat

Solutions

Compressed air impurity can be equipped with double-layer filter at the intake, which can be cleaned and maintained regularly. When moisture appears on the cloth surface, the drying system should be checked for normal operation. In daily maintenance, the solenoid valve should be cleaned carefully with the ultrasonic vibration instrument. —— Hey Hakungfu

At the beginning of the machine, it is necessary to adjust the heald frame and opening stroke according to the process requirements, and pay attention to the consistency of the process on both sides of the heald frame when adjusting the heald frame. The wire rope on the air-jet loom with pedal openings is the flexible carrier of the heald. It is easy to lengthen in the state of motion. Generally, the height of the heald frame is checked once a week. This can not only eliminate the influence of the wire rope being lengthened, but also eliminate the weft shrinkage caused by the irregularity of the heald frame or the improper adjustment of the heald frame caused by frequent loading, breakdown maintenance and improper adjustment of the loom. This is the case. —— Liu Xiaoyi

Temperature and humidity in the workshop are unstable, which changes the warp and weft yarn properties and affects the clearness of the shuttle. It is necessary to adjust them in time. Generally, the air-jet loom temperature ranges from 22 to 26 degrees C, and the relative humidity ranges from 72% to 78%. ——Chinchilla

Double latitude

origin

Weft retainer needle springback spring failure, resulting in inaccurate and unstable opening and falling angle of the retainer needle, weft yarn is easy to take off from the retainer needle; the wear of the retainer needle is not centered on the storage drum, the weft yarn slides out from the storage drum; weft storage device is too close to the booster nozzle, when the weft is pulled back from the weft storage device, the yarn circle flings violently, and it is easy to fling out from the retainer needle; the booster nozzle is not aligned. In the center of weft storage, irregular yarn rings and incorrect position and angle to the main nozzle will cause double weft defects. —— Endless

Solutions

Replacement of weft retainer needle spring, replacement of yarn retainer needle, adjustment of distance between weft retainer and pressurized nozzle or installation of balloon breaker, adjustment of height and angle of weft retainer to appropriate position, replacement and repair of left scissors, press forward button to check, weft yarn pulling phenomenon can not occur during shearing. —— Endless

Hundred feet

origin

The strength of the original yarn is insufficient and the yarn thickness is uneven; the weft detector is dirty and the sensitivity is reduced, resulting in 100-foot defects; the main nozzle is at high atmospheric pressure, the weft is blown away in the main nozzle, and when driving to insert the first weft, weft breakage is formed on the right side of the cloth surface, and the pressure of the main and auxiliary nozzles is high, and the weft details are blown off; the locomotive blocker fails to operate carefully as required, such as the weft breakage that should be extracted has not been pulled out. Cause a hundred feet defect. —— Walking in the rain

Solutions

Generally, the twist coefficient of weft yarn is relatively small, the yarn strength is relatively low, and the twist increases by 5%-9%, which can effectively reduce weft breakage and reduce yarn details by using rotor spinning; strengthen the maintenance of weft detection device, timely clean up the flying flowers generated by weft detector; reduce the atmospheric pressure of main nozzle, and control the nozzle pressure slightly when weft yarn can pass smoothly; strengthen technical training and improve the quality of weft detection device; The working responsibility of the locomotive blockers should be strictly enforced. —— Walking in the rain

Dense Road

origin

Fabric displacement. When the loom stops, both the cloth and the warp yarn are subjected to greater tension. At this time, the loom is separated from the reed. Because of the creep and relaxation of the warp yarn, the loom ends deviate from the corresponding position of the normal weaving. The magnitude of the deviation varies with the length of the stopping time. When the loom restarts, if the loom ends are not properly handled, a dense path will be formed on the cloth surface. In addition, more idling times of slow car, insufficient tension of pricking ring and winding mechanism will also cause the displacement of the fabric. —— ZFL 1979

The equipment is in bad condition. With the continuous operation of the loom for a long time, some mechanical parts and components gradually wear and even fail, resulting in a decline in motion accuracy, or inadequate beating-up force of the first weft after starting, failing to fully insert the first weft into the knitting, or braking in time when yarn breaking, resulting in weft vacancies and warp feeding and winding faults. —— Tang Dabai

Solutions

Reduce shutdown frequency. Shut-down is the main cause of the dense road. Improving the quality of semi-finished products to reduce the stop is the most effective measure to reduce the defect of the dense road. In production, lathe blockers should deal with the stop in time to prevent the formation of sparse road defects, or equip weft broken ends to deal with automatically.