The function of the stripping mechanism of the carding machine is to strip off the fibers on the doffer needle teeth to form a uniform cotton web, and then send it to the large pressure reel, and aggregate into strips from the bell mouth. Carding machines are used to process cotton fibers and chemical fibers and belong to textile machinery. According to the spinning process, carding is an important process.
The front process of the carding machine is the opening and cleaning machine, and the latter process is the drawing frame (carding process) or the sliver coiler (combing process). 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.
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. In the past, we used the chopper and stripping mechanism that reciprocated and moved continuously, but it could not adapt to the economic high speed.
At present, the roller stripping mechanism of China's continuous use movement can be used in the development of high-yield carding machines. The fiber layer attached to the doffer needle window, most of the research fibers have one end held by the doffer needle teeth, while the other end floats on the doffer tip. When the fiber moves with the doffer to the stripping action and area of the stripping reel, the sawtooth phenomenon on the stripping roller will give the fiber on the doffer needle a social impact to the outside of the tooth, so that it can be separated from the doffer needle. At the same time, due to the frictional force and adhesion function between different fibrous tissues, the fibers on the doffer needle teeth are continuously peeled off to form a cotton web.
The roller stripping mechanism uses some rotary stripping reels with mountain-shaped saw teeth on the surface to continuously strip the cotton web from the doffer needle surface, which can effectively ensure the uniform and continuous stripping speed distribution, and improve the adaptability to the carding machine. high-yield technology needs. At the earliest, four-roller stripping was adopted, and then students developed into three-roller cotton stripping institutions. The descriptions are as follows: 1. The design of the four-roller stripping mechanism is shown in Figure 2-31. The surfaces of the stripping roller and the transfer roller are covered with chevron-shaped teeth, the working angle of the teeth is an obtuse angle, and the tooth tip density is 12 teeth/cm2 , the spacing between the stripping roller and the doffer hotel is 0.125-0.225mm, the speed of the stripping roller is slightly higher than that of the doffer, and one of the tension increases drafts 1.026 times.
Therefore, the stripping roller can continuously strip the cotton web on the doffer needle teeth. And transferred to the agricultural transfer stop, the distance between the transfer roll and the upper roll production is 0.125 - 0.225mm. The distance between the transfer roll and the lower roll structure is about 10mm. When spun up, the cotton on the transfer roller is peeled off by the friction of the upper nip roller and the action of adhesion molecules near the gap point, and the signal is output through the crossing composed of the upper and lower nip rollers.
The gap between the upper and lower rollers is very small (0.125mm). The self-weight of the upper roller can crush the impurities in the cotton web, which is beneficial to be removed by the subsequent process. The upper and lower silver rolls are each equipped with a cleaning blade to complete one.
It is used to treat and eliminate these flying flowers and impurities adhering to the nip, and prevent the cotton web from being wound around the nip roll after it breaks. 2. Two-roller stripping mechanism The three-roller stripping mechanism consists of stripping rollers and a pair of impact rollers. As shown in Figure 2-32.
The cotton web is peeled off from the doffer needle surface by the stripping roller and then attached to the tooth surface of the stripping roller. When it reaches the vicinity of the minimum distance between the upper roller and the quality of the upper roller, the data continues to be peeled off by the main action of adhesion and mutual friction on the material surface of the upper roller. Down, the output is managed through the crossing between the upper and lower roll models. On the domestic brocade carding machine, the lower roller has a slightly larger diameter and is placed under the stripping roller, so it can support self-stripping.