After the sliver comes out of the bell, it enters the drafting mechanism. 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. 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). The current carding machine is a three-up and three-down rubber ring drafting device.
The front and rear lower rollers are generally steel groove rollers with a diameter of 28mm, the middle and lower rollers are steel knurled rollers with a diameter of 25mm, and the surfaces of the three lower rollers are on the same plane. The diameter of the front and rear rubber rollers is 31mm, and the diameter of the middle and upper rubber rollers is 25mm. The front drawing area is the main drawing area.
The control element consists of upper and lower rubber rings, upper and lower pins, upper pin springs and distance blocks. The lower rubber ring is sleeved on the middle roller, the middle roller and the middle roller rotate, and the upper rubber ring is sleeved on the small iron roller, and the small iron roller rotates by friction. The sliver is clamped with the upper and lower aprons, and when the upper and lower aprons are moved, the yarn is output.
The upper pin supports the front end of the upper rubber ring, and the lower pin supports the front end of the lower rubber ring. A spacer block is attached to the leading edge of the upper pin. All three-row rollers are equipped with collectors that collect fibers, increase sliver density and reduce roving fly.
The double apron drafting card has the following characteristics: (1) The front-end data of the upper and lower pins are all flat structure, and the elastic stagger formed by the front-end technology of the apron can be close to the front roller jaw, so the meta-control area is very short, which can strengthen the The control of these phytoplankton fibers enables the fibers to move forward at the speed change point and focus on comparative research, which can reduce the distance deviation of fiber art movement in the process of drafting training and improve the evenness quality. (2) The vertical pin apron formed by bending the distal end of the resilient force upward and downward, so that the jaw sliver bears greater pressure. In this arrangement of the friction fields, neither prevents the rapid retention of fibers from being pulled out without the movement of the preceding short fibers.
During the spinning process with the yarn thickness change of the yarn, the yarn thickness, the circular cavity enhances the control action of the apron jaws to control the spinning process; for tulle, the apron control effect is weak, so the roving can be apron drafted quality. (3) The apron drafting system uses the elastic force of a pair of limb rings to elastically design to hold the whiskers. The entire length of the contact between the whiskers and the rubber ring is developed by the soft pressure of the limb rings. Form a larger friction material strength. The distance of the lower pin from the highest point of the surface to the front roller jaw is slightly larger or equal to the quality and length without fiber, so it can control the movement of most of the fibers in the enterprise, and the adaptability to the length of fiber cells is better than ordinary Fig. 5 and 3 The upper and lower double-short apron drafting technology device has large drafting of the output roller.
(4) The three-roller double-short rubber ring drawing type is the simplest, as shown in the figure. 5-3. The evenness of the roving can meet the requirements of the spinning process.