Carding machine tip density (N) has a significant impact on both carding and transfer students. The structure of the double twisting unit of the double twisting machine mainly includes the spindle braking device, the spindle part of the double twisting machine, the yarn winding device, and the special device of the double twisting unit. Grinder A spinning machine that turns fiber strands into rovings.
The main function is to draft and twist, and to wind the roving into a certain package to meet the processing requirements of the spinning frame. Special equipment for the textile industry on the winder. As the last process of spinning and the first process of weaving, winding is the link between the past and the next.“bridge”Therefore, it occupies an important position in the textile field.
For example, the density of Xinjinlong tooth tips can be increased, the ability of needle teeth to hold the fiber is continuously enhanced, and the number of teeth acting on each fiber is increased, which improves the carding efficiency of Xinjinlong clothing, which is beneficial for enterprises to improve cotton web carding quality plate. However, the density of the window tip is too dense, which will affect the metastasis rate and fibroblast damage that Doffer believes. The calculator tip density is usually expressed by the number or quantity of tips within 25.4x25.4 square millimeters (or square inches), generally 5 tips are called 1.
If 25.4x25.4mm square has 500 teeth, 100. The density of the tooth tip is determined by the transverse density (jl thickness expansion) and the longitudinal density (the smaller the tooth pitch T.w, the greater the transverse density; the smaller, the greater the longitudinal density. The transverse density has a great influence on the quality of the cotton female comb, when the density When higher, the quality of batting carding is generally better.
But when the tooth depth h is large and the needle tooth finish is poor, the lateral density is high, and the needle tooth is easy to read embedded magnetic seeds. Experiments were carried out in the circle, the bottom thickness w of the card clothing circumference 0.65-0.7mm spun the middle yarn, and the seeds were obviously embedded. Therefore, for the current tin lining, the base thickness of the middle yarn is w0.8~0.9mm, the w of the spinneret is 0.7-0.8mm, the N is 365-635 teeth, and the tooth tip density N is 650-861 teeth.
With the decrease of the tooth depth h and the increase of the needle tooth finish j, there is a need and possibility for the base thickness W to be further reduced. Longitudinal density or tooth pitch T can be determined according to tooth tip density N and base thickness f/I‘Escape calculation. When the chemical fiber is spun by the carding machine, due to the large friction coefficient between the chemical fiber and the needle teeth, the fiber is long, and it is easy to generate static electricity, and it is easy to cause the fiber to wind the drum during production, so the tooth density and longitudinal density should be small.
However, the tooth top density and longitudinal density are too small, the carding effect is not good, and the carding quality of the top wire is poor. Therefore, in order to improve the carding ability of the card clothing, the negative angle arc back (such as ses) or the negative angle double straight concave back (such as jt205), shallow angle teeth (such as jt205, h = o. 7) and chemical fiber cover plate (such as 702h), the tooth tip density of the card clothing increases. If the jt205 tooth density is 575 teeth, which is greater than n, the spinning quality of 203 teeth is 364 teeth. Needle-tooth carding machines have small doffer working angles, deep teeth, and limited longitudinal density.
To increase the doffer card clothing excretion Xinjinlong doffer believes that the air in the triangular area is mixed together to increase the doffer card clothing needle gap capacity, increase the doffer transfer rate, and the lateral development density can not be large. Therefore, in the case of continuously improving the ability of grasping and transferring learning of fibers in terms of small angles, deep teeth, and large-capacity management of tooth gaps, we should appropriately control the tooth tip density of metal card clothing in Doffer University to effectively reduce .