Types and characteristics of looms
Classification of looms:
According to the classification of fabric fibers, it can be divided into cotton looms, wool looms, sack looms, silk looms, etc.
According to the weft insertion method of weaving, it can be divided into two categories: shuttle looms and shuttleless looms.
A shuttle loom is a loom that uses a traditional shuttle (wooden shuttle or plastic shuttle) for weft insertion. The shuttle is large in size and heavy in weight, and is repeatedly projected back and forth. The machine has high vibration, high noise, slow speed, and low efficiency.
There are various weft insertion methods for shuttleless looms, including rapier, jet (air jet, water jet), projectile, multi-shed (multi-phase) and weaving.
1. Rapier loom: Use rigid or flexible rapier head and belt to clamp and guide the weft yarn. In addition to being suitable for weaving plain and textured fabrics, the rapier loom is characterized by easy color change and is suitable for multi-color weft fabrics. It is suitable for the production of yarn-dyed fabrics, double-layer velvet fabrics, terry fabrics and decorative fabrics.
2. Air-jet loom: Use the jetted compressed air to pull the weft yarn and bring the weft yarn through the shed. The biggest features of air-jet looms are fast speed and high labor productivity. They are suitable for the production of plain and textured fabrics, fine and high-density fabrics and large-volume fabrics.
3. Water-jet loom: Using water as the weft insertion medium, the jet water generates friction and traction on the weft yarn, so that the weft yarn on the fixed bobbin is introduced into the shed. Water-jet loom has the characteristics of high speed and high unit output, and is mainly suitable for the production of hydrophobic filament chemical fiber fabrics with smooth surface.
4. Projectile loom: A small sheet shuttle with a clip is used to clamp the weft yarn and project the weft insertion. Projectile looms have the advantages of stable weft insertion, excellent fabric quality, and less weft snagging, and are suitable for the production of multi-color weft fabrics, fine and thick fabrics, and wide-width fabrics.
The common basic feature of the above four types of shuttleless looms is to separate the weft yarn package from the shuttle, or only carry a small amount of weft yarn and replace the large and heavy shuttle with a small and light weft insertion device to provide high-speed insertion. Weft provides favorable conditions. In the supply of weft yarn, bobbins are directly used, and the weft insertion mechanism is entered through the weft storage device, which frees the loom from frequent weft replenishment actions. Therefore, the use of shuttleless looms is of great significance for increasing fabric varieties, adjusting fabric structure, reducing fabric defects, improving fabric quality, reducing noise, and improving working conditions. Shuttleless looms have high speeds and are usually 4-8 times more efficient than shuttle looms. Therefore, the widespread application of shuttleless looms can greatly improve labor productivity.
As the structure of shuttleless looms is becoming more and more perfect, a wide range of materials are used, and the processing accuracy is getting higher and higher. With the development of science and technology, electronic technology and microelectronic control technology gradually replace mechanical technology. The manufacturing of shuttleless looms is a metallurgical It is a high-tech product that combines multiple disciplines such as machinery, electronics, chemical engineering and fluid power, and integrates electronic technology, computer technology, precision machinery technology and textile technology. AAEGRTHRTH
Disclaimer:
Disclaimer: Some of the texts, pictures, audios, and videos of some articles published on this site are from the Internet and do not represent the views of this site. The copyrights belong to the original authors. If you find that the information reproduced on this website infringes upon your rights, please contact us and we will change or delete it as soon as possible.
AA
