Let-off mechanism
The function of the warp let-off mechanism is to send out a certain amount of warp yarns with a certain tension in a timely manner during the weaving process to maintain the continuous progress of weaving production. Whether the weaving beam can maintain a balanced and consistent warp tension from large to small during the weaving process is the main indicator of the quality of the warp let-off mechanism.
In the development process of weaving production, many let-off mechanisms with different structural forms have appeared. The types of let-off mechanisms are the most complicated among the various mechanisms of the loom, with dozens of types in total. If classified according to the way the warp is sent out, various let-off mechanisms can be classified into two categories: passive let-off and semi-positive let-off. The vast majority of warp let-off methods in modern water-jet looms are semi-positive let-off. .
Semi-positive let-off mechanism is generally composed of a warp delivery device, a warp tension detection device, a let-off amount detection device and an adjustment device.
The semi-positive warp let-off mechanism adjusts the warp feed amount according to the warp tension that is comprehensively affected by various factors during the weaving process, and controls the warp tension to be even. Therefore, in the semi-positive let-off mechanism, the tension and deformation of the warp yarns are smaller than those in the negative let-off mechanism. Semi-positive let-off mechanisms are divided into two types: mechanical and electronic.
AAADFGRTJUYKYU
Extendedreading:https://www.yingjietex.com/product/800D-Polyester-Yarn-Dye-Skin-Dobby-OXFORD-Fabric.html
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedread
