4results about How to "Improve yarn quality" patented technology

This invention relates to a blending process for hemp fiber and sorona fiber, belonging to the technical field of blending and processing of natural fibers and bio-based elastic fibers. The blending process for hemp fiber and sorona fiber of this invention includes the following steps: raw material selection → pre-spinning process → post-spinning process → packaging. This invention solves the problems of poor spinnability, high breakage rate, and stiffness and wrinkling in pure wet-spun hemp through specific proportions and wet spinning processes, achieving high-count, stable, and high-quality production. This significantly improves spinnability, enhances yarn quality, and greatly improves hand feel and comfort, achieving high elasticity and comfort to meet user needs.

This utility model discloses a bearing assembly structure for a rotor motor, including a housing, a motor spindle, and a rotor. The housing houses a stator assembly and a rotor assembly arranged opposite to each other. The motor spindle is located inside the housing, and its output end is coaxially connected to the rotor to drive its rotation. A support base is located at the head of the housing, and a cover is mounted on the support base. The shaft of a DC brushless motor is connected to the air-jet spinning rotor assembly, transmitting the rotational power generated by the motor to the rotor. The motor speed can be precisely controlled by changing the input voltage or current to meet the needs of different spinning processes, improving production efficiency and yarn quality. It features high efficiency, fast response, and high stability. The bearing design provides a larger support area, significantly reducing vibration and offset of the motor spindle during high-speed rotation, thereby improving the concentricity and operational stability of the rotor.

This application belongs to the field of carbon fiber manufacturing technology, and discloses a carbon fiber sizing yarn bundling device, comprising: an upper roller assembly including an upper roller frame and an upper bundling roller rotatably mounted on the upper roller frame, the upper bundling roller having a first annular groove along its circumference on its surface; a lower roller assembly disposed below the upper roller assembly, including a lower roller frame and a lower bundling roller rotatably mounted on the lower roller frame, the lower bundling roller having a second annular groove along its circumference on its surface; the upper and lower bundling rollers corresponding one-to-one, and a bundling channel forming between the first and second annular grooves; a mounting frame including a sliding groove, with both ends of the upper roller frame slidably disposed within the sliding groove, and both ends of the lower roller frame fixedly disposed on the mounting frame; and a counterweight mechanism mounted on the upper roller frame. By applying pressure through the counterweight mechanism, the bundling channel can apply pressure to the sizing carbon fiber yarn during bundling, thereby squeezing out excess sizing material and compacting it. Simultaneously, during the bundling process, the upper and lower bundling rollers are rotating, resulting in low frictional resistance between them and the yarn.

The utility model discloses a kind of beam limiting structure, comprising: main shaft, the side fixed connection of main shaft has transmission gear, main shaft sleeve is equipped with beam cylinder, the both sides of beam cylinder are respectively provided with bearing, main shaft is equipped with accommodating groove, accommodating groove is provided with elastic member, elastic member has a elastic deformation limiting portion, limiting portion is protruding from the opening plane of the accommodating groove in natural state;Wherein, the bearing of the side close to the transmission gear is arranged between the transmission gear and the limiting portion of the elastic member.The limiting portion of the elastic member continuously applies elastic pre-tightening force towards transmission gear to bearing, can automatically compensate the tiny gap generated due to manufacturing tolerance, bearing wear or vibration, ensure that beam cylinder always maintains stable axial position when high-speed operation and yarn tension change, effectively prevent its axial movement, deviation and even disengage from main shaft, greatly improve the stability of the whole process and yarn quality.