High Speed And Electronization Is The Development Trend Of Precision Editing.

Warp knitting, as a branch of China's knitting industry, has been expanding in recent years.

At present, the industrial clusters represented by Guangdong Shantou, Fujian Changle, Zhejiang Haining and Shaoxing, Jiangsu and Changshu are becoming the highlight of the whole industry with strong comprehensive competitive strength and potential.

In recent years, along with the gradual expansion of warp knitting industry scale, China has continuously introduced international advanced warp knitting production equipment and gradually improved itself.

Application of carbon fiber materials

Creating conditions for high speed

High speed Tricor warp knitting machine is one of the most efficient production models in the entire textile field. It represents the development direction of engineering production technology with great potential for innovation.

In recent years, warp knitting researchers have been innovating in improving the speed of this type of machine.

They applied carbon fiber reinforced plastics (CFRP) to the production of ring forming machines and integrated them into the design concept of the whole machine, and developed a new generation of machines.

Because CFRP material has the characteristics of light weight, rigid structure and stability in any climate environment, it can greatly increase the speed of operation.

In addition, because of the very low thermal expansion coefficient of CFRP, the influence of temperature difference on the stability of the machine is greatly reduced, and the range of temperature difference in the workshop can be allowed to increase.

In this way, the operation cost of the enterprise is reduced, and environmental protection and energy saving are also achieved.

The quality of the comb made of carbon fiber composite material has been reduced by 25% and the rigidity has also been improved.

More importantly, the use of CFRP material means that the components are more resistant to heat under production conditions.

By using CFRP material and designing the machine, the speed of HKS2-3E high speed tricot warp knitting machine is greatly improved than that of the original machine. When the machine number reaches 40 needles /25.4 mm, it can also maintain higher speed and ensure fabric quality.

Changzhou Run Yuan warp knitting machinery Co., Ltd. and Fujian Xin Gang Textile Machinery Co., Ltd. have pioneered the application of carbon fiber in the manufacture of needle bed, needle core bed and sinker bed of double needle bed seamless underwear warp knitting machine and multi bar lace machine.

Electronic let off technology

Ensure product quality

In production, the constant amount of let off has great influence on the correct work of the warp knitting machine, and the structure, quality of the warp knitted fabric and the formation of grey cloth.

If the let off system can not control the let off amount, it may cause yarn breakage and affect the productivity and quality of the warp knitting machine.

In 1990s, with the continuous development of electronic technology, the electronic let off mechanism was adopted by many warp knitting machines.

The electronic let off mechanism can be divided into two types: single speed or double speed EBA and multi speed EBC, and EBA electronic let off mechanism can be divided into control EBA and driving EBA according to its working principle.

Among them, the control EBA uses microprocessor to adjust the control motor and then control the motor to adjust the differential gear to achieve constant let off. The driving EBA uses microprocessor to directly control the driving motor to achieve constant let off.

Before, most of the warp knitting machines in China used mechanical let off system, and there were many deficiencies in speed and operation comfort.

With the continuous development of servo control technology, the electronic let off system of warp knitting machine has also been developed.

In recent years, for domestic warp knitting machine, electronic delivery mechanism has become a standard configuration.

Electronic let off provides a good guarantee for the quality improvement of warp knitting enterprises and the development of new products.

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Electronic comb moving mechanism

Flower disc control is more precise.

The EL electronic bar pversal mechanism is controlled by a linear motor, which is suitable for changing patterns continuously and quickly.

The lateral movement of EL control is more accurate than that of the flower disc, and it can generate larger lateral movement.

The EL electronic bar moving mechanism is commonly used in 4 comb and 5 comb tricot warp knitting machines, such as HKS4EL and HKS5EL Tricor warp knitting machines, and can also be used in double needle Raschel warp knitting machines, such as RD4EL, RD6EL and HDR8EL Raschel warp knitting machines.

The new EL system can increase the production speed to 1600 rpm, depending on the type of the machine, which is 30% higher than that of the curve chain block.

The EL electronic bar pversal mechanism is simple, reliable and easy to operate. The pattern circulation is not limited, and it can carry larger needle back movement. The pattern design can be carried out quickly, the pattern pformation speed is fast, the chain block storage and maintenance are omitted, the error is reduced, the time needed for setting and operation is shorter, and the production efficiency is high.

The new type of steel wire comb pfer mechanism occupies a very small space and the quality of the moving parts is very small, so that more flower combs can be placed and more horizontal lines are added, which provides a wider space for flower pattern design.

On the 24 pin /25.4 mm machine, the width of the flower comb is extended from 47 pins to 170 needles, and the moving distance is increased by 2.5 times. The use of a comb can produce a large outline and large circular pattern, while the other comb can be used to further improve the pattern effect, which provides designers with more design space.

In addition, the compact comb arrangement enables the machine to achieve higher speed.

For example, the speed of the new JL42/1 lace machine has reached 850 revolutions / min. this is the speed that any other lace machine has not achieved so far.

At the same time, higher speed and shorter adjustment time greatly improve the efficiency of the machine. Compared with the ordinary lace machine, the machine adjustment time has been reduced by more than 50%.

And because the size of the pattern mechanism is more precise and the structure is more stable, no matter how much the distance is moved, it can maintain the accuracy of the lateral movement.

In production practice, the error rate of machine operation has been reduced by about 50%, and the fabric quality has been greatly improved.

Electronic jacquard jacquard technology

Make great progress

The jacquard method of modern warp knitting machine has jacquard, multi comb and compound methods.

In recent years, jacquard warp knitting machine has developed rapidly, from the mechanical jacquard device to the electromagnetic control jacquard device, and from the electromagnetic jacquard device to the present piezoelectric jacquard device, that is, the Piezo jacquard system (PJS).

With the emergence of jacquard jacquard technology, the jacquard technology has been further improved, which not only controls the offset of the jacquard pin, but also controls the entry and exit of jacquard yarn.

Compared with traditional jacquard technology, there is no lateral shift between the shifting pin and jacquard guide needle in PJS.

The Piezo jacquard component is offset by a current spike control.

Nowadays, the Piezo jacquard system is not only used for ordinary jacquard warp knitting machines, but also for multi comb and double needle bed warp knitting machines.

With the successful development of PJS, the speed of warp knitting machine has increased by 50%, and the maximum can reach 1300 rpm.

The foreign Piezo jacquard system has been developed earlier and has been widely used, especially in the multi bar lace machine, double needle bed panty hose machine and floating grain jacquard machine.

China has made considerable progress in the development of Piezo jacquard, which is mostly used in the home made computer lace machine.