阅读说明：本技术 一种全电子牵伸长细纱机牵伸传动机构 (Drafting transmission mechanism of full-electronic drafting long spinning frame ) 是由 张明欣 陈斌 王建明 谢枫 陆亚明 苑士欣 于 2018-07-24 设计创作，主要内容包括：一种全电子牵伸长细纱机牵伸传动机构,包括车头牵伸传动系统和车尾同步牵伸传动系统,前罗拉和中、后罗拉的前半段分别由车头牵伸传动系统中的三个同步伺服电机通过传动链传动,中、后罗拉的后半段分别由车尾同步牵伸传动系统中的两个同步伺服电机通过传动链传动。采用该全电子牵伸传动系统后,无需再设置车尾同步机构,有效降低了前罗拉工作负荷,提高了长细纱机的成纱质量和设备稳定性,同时通过控制端显示屏输入牵伸工艺至PLC控制器实现牵伸参数调整,提高了工艺调整效率,降低了设备维护保养成本。(A drafting transmission mechanism of a full-electronic drafting long spinning frame comprises a headstock drafting transmission system and a tailstock synchronous drafting transmission system, wherein the front half sections of a front roller, a middle roller and a rear roller are respectively driven by three synchronous servo motors in the headstock drafting transmission system through transmission chains, and the rear half sections of the middle roller and the rear roller are respectively driven by two synchronous servo motors in the tailstock synchronous drafting transmission system through transmission chains. After the full-electronic drafting transmission system is adopted, a tail synchronizing mechanism is not required to be arranged, the working load of a front roller is effectively reduced, the yarn quality and the equipment stability of a long spinning frame are improved, meanwhile, a drafting process is input to a PLC (programmable logic controller) through a control end display screen to realize drafting parameter adjustment, the process adjustment efficiency is improved, and the equipment maintenance cost is reduced.)

1. The utility model provides a long spinning frame draft drive mechanism of full electronic draft, includes draft drive mechanism support, its characterized in that: a headstock drafting transmission system and a tailstock synchronous drafting transmission system are arranged on the drafting transmission mechanism bracket; the headstock drafting transmission system comprises a front roller motor, a first driving belt wheel is arranged on an output shaft of the front roller motor, the first driving belt wheel is connected with a first driven belt wheel on an input shaft of a front roller reduction gearbox through a first synchronous belt, the front roller reduction gearbox comprises a front roller reduction gearbox input shaft and a pair of front roller reduction gearbox output shafts, the crossing distance between the pair of front roller reduction gearbox output shafts is equal to the center distance between the left front roller input shaft and the right front roller input shaft of the long spinning frame, the rotating directions of the pair of front roller reduction gearbox output shafts are opposite, and the front roller reduction gearbox output shafts are fixedly connected with the left front roller input shaft and the right front roller input shaft on the long spinning frame through a coupler; the headstock drafting transmission system comprises a middle roller motor, a second driving belt wheel is arranged on an output shaft of the middle roller motor, the second driving belt wheel is sequentially connected with a second driven belt wheel on the input shaft of the first middle roller reduction box and a third driven belt wheel on the input shaft of the second middle roller reduction box through a second synchronous belt, a first tensioning wheel is arranged between the first middle roller reduction box and the middle roller motor, the second synchronous belt is buckled with the lower half circumference of the first tensioning wheel and then buckled with the upper half circumference of the second driven belt wheel, the second synchronous belt is a double-sided tooth-shaped belt, the rotating directions of the second driven belt wheel and the third driven belt wheel are opposite through the conversion of the first tensioning wheel, and the output shaft of the first middle roller reduction gearbox and the output shaft of the second middle roller reduction gearbox are fixedly connected with left and right middle roller input shafts on the long spinning frame through a coupler; the headstock drafting transmission system comprises a rear roller motor, a third driving belt wheel is arranged on an output shaft of the rear roller motor, the third driving belt wheel is rotationally connected with a fourth driven belt wheel on an input shaft of a rear roller reduction box through a third synchronous belt, a first gear pair and a second gear pair are respectively arranged on a first swing arm and a second swing arm which are symmetrically arranged left and right, an output shaft of the rear roller reduction box is meshed with the first gear pair, a rear roller gear is coaxially and fixedly connected with the rear roller input shaft through a coupler, and the rear roller gear is meshed with the first gear pair and the second gear pair in a transmission way to drive front half sections of left and right rear rollers to rotate in different directions; the tailstock synchronous traction transmission system comprises a synchronous middle roller motor, a fourth driving belt wheel is arranged on an output shaft of the synchronous middle roller motor, the fourth driving belt wheel is sequentially in rotating connection with a fifth driven belt wheel on an input shaft of a first synchronous middle roller reduction gearbox and a sixth driven belt wheel on an input shaft of a second synchronous middle roller reduction gearbox through a fourth synchronous belt, a second tensioning wheel is arranged between the first synchronous middle roller reduction gearbox and the synchronous middle roller motor, the fourth synchronous belt is buckled with the upper half circumference of the fifth driven belt wheel after being buckled with the lower half circumference of the second tensioning wheel, a guide wheel is arranged between the first synchronous middle roller reduction gearbox and the second synchronous middle roller reduction gearbox, the fourth synchronous belt is buckled with the lower half circumference of the sixth driven belt wheel after being buckled with the upper half circumference of the guide wheel, and the fourth synchronous belt is a double-sided toothed belt, the rotating directions of a fifth driven belt wheel and a sixth driven belt wheel are opposite through the conversion of the second tension wheel, and the output shaft of the first synchronous middle roller reduction gearbox and the output shaft of the second synchronous middle roller reduction gearbox are fixedly connected with left and right middle roller input shafts on the long spinning frame through a coupler; the tail synchronous traction transmission system comprises a synchronous rear roller motor, a fifth driving belt wheel is arranged on an output shaft of the synchronous rear roller motor, the fifth driving belt wheel is rotationally connected with a seventh driven belt wheel on an input shaft of a synchronous rear roller reduction box through a fifth synchronous belt, a third gear pair and a fourth gear pair are respectively arranged on a third swing arm and a fourth swing arm which are arranged in bilateral symmetry, the output shaft of the synchronous rear roller reduction box is meshed with the third gear pair, the synchronous rear roller gear is coaxially and fixedly connected with a rear roller input shaft through a coupler, and the synchronous rear roller gear is meshed with the third gear pair and the fourth gear pair in a transmission way to drive the rear half sections of the left rear roller and the right rear roller to rotate in different directions; the first middle roller reduction box output shaft and the first synchronous middle roller reduction box output shaft are coaxially and correspondingly arranged, the second middle roller reduction box output shaft and the second synchronous middle roller reduction box output shaft are coaxially and correspondingly arranged, a pair of front roller input shafts, a pair of middle roller input shafts and a pair of rear roller input shafts which are connected to the headstock drafting transmission system are respectively and symmetrically arranged on two sides of the headstock drafting transmission system from bottom to top, the roller input shafts on each side are arranged on a straight line, a pair of middle roller input shafts and a pair of rear roller input shafts which are connected to the tailstock synchronous drafting transmission system are respectively and symmetrically arranged on two sides of the tailstock drafting transmission system from bottom to top, and the roller input shafts on each side are arranged on a straight line; the front roller motor, the middle roller motor, the rear roller motor, the synchronous middle roller motor and the synchronous rear roller motor are synchronous servo motors, and the PLC is connected with the motor controller to control the motor rotating speed to synchronize the rollers.

2. The drafting transmission mechanism of the full-electronic drafting long spinning frame as claimed in claim 1, wherein: the first tensioning wheel and the second tensioning wheel are one-way rotating wheels.

Technical Field

The invention relates to the field of textile machinery, in particular to a drafting transmission mechanism of a full-electronic drafting and stretching spinning machine.

Background

In a drafting transmission mechanism of a traditional spinning frame, a main shaft is driven by a main motor at the tail of a vehicle, and the main shaft is meshed through a series of gears after entering a vehicle head to transmit the drafting mechanism of the vehicle head. In the long spinning frame with more than 600 spindles, because each roller bears different loads in the process of drafting the yarn, the longer the roller is, the asynchronization among the rollers is caused, and the quality of the yarn is influenced. In order to reduce the adverse factor, a middle roller and a rear roller synchronous transmission mechanism are added at the tail of the long spinning frame, and a front roller enters the tail of the long spinning frame and then is transmitted by the synchronous transmission mechanism to the middle roller and the rear half section of the rear roller. The driving source is from the tail main motor, the spinning process adjustment is completed by a series of gear changing operations, the operation is inconvenient, the self structure influences, and the requirements of certain special processes cannot be met by the gear changing mode. Meanwhile, the synchronizing mechanism at the tail of the vehicle is driven by the front roller from the head of the vehicle, so that the load of the front roller is further increased, the torsional deformation of the front roller is easy to generate, and the yarn forming quality is influenced.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a drafting transmission mechanism of a full-electronic drafting and stretching spinning frame.

The drafting transmission mechanism of the full-electronic drafting long spinning frame comprises a headstock drafting transmission system and a tailstock synchronous drafting transmission system which are fixedly arranged on a drafting transmission mechanism bracket;

the headstock drafting transmission system comprises a front roller motor, a first driving belt wheel is arranged on an output shaft of the front roller motor, the first driving belt wheel is rotationally connected with a first driven belt wheel on an input shaft of a front roller reduction gearbox through a first synchronous belt, the front roller reduction gearbox comprises a front roller reduction gearbox input shaft and a pair of front roller reduction gearbox output shafts, the crossing distance between the pair of front roller reduction gearbox output shafts is the center distance of the left and right front roller input shafts of the long spinning frame, the rotating directions of the front roller reduction gearbox output shafts are opposite, and the front roller reduction gearbox output shafts are fixedly connected with the left and right front roller input shafts on the long spinning frame through a coupler;

the headstock drafting transmission system comprises a middle roller motor, a second driving belt wheel is arranged on an output shaft of the middle roller motor, the second driving belt wheel is sequentially connected with a second driven belt wheel on the input shaft of the first middle roller reduction box and a third driven belt wheel on the input shaft of the second middle roller reduction box through a second synchronous belt, a first tensioning wheel is arranged between the first middle roller reduction box and the middle roller motor, the second synchronous belt is buckled with the lower half circumference of the first tensioning wheel and then buckled with the upper half circumference of the second driven belt wheel, the second synchronous belt is a double-sided tooth-shaped belt, the rotating directions of the second driven belt wheel and the third driven belt wheel are opposite through the conversion of the first tensioning wheel, and the output shaft of the first middle roller reduction gearbox and the output shaft of the second middle roller reduction gearbox are fixedly connected with left and right middle roller input shafts on the long spinning frame through a coupler;

the headstock drafting transmission system comprises a rear roller motor, a third driving belt wheel is arranged on an output shaft of the rear roller motor, the third driving belt wheel is rotationally connected with a fourth driven belt wheel on an input shaft of a rear roller reduction box through a third synchronous belt, a first gear pair and a second gear pair are respectively arranged on a first swing arm and a second swing arm which are symmetrically arranged left and right, an output shaft of the rear roller reduction box is meshed with the first gear pair, a rear roller gear is coaxially and fixedly connected with the rear roller input shaft through a coupler, and the rear roller gear is meshed with the first gear pair and the second gear pair in a transmission way to drive front half sections of left and right rear rollers to rotate in different directions;

the tailstock synchronous traction transmission system comprises a synchronous middle roller motor, a fourth driving belt wheel is arranged on an output shaft of the synchronous middle roller motor, the fourth driving belt wheel is sequentially in rotating connection with a fifth driven belt wheel on an input shaft of a first synchronous middle roller reduction gearbox and a sixth driven belt wheel on an input shaft of a second synchronous middle roller reduction gearbox through a fourth synchronous belt, a second tensioning wheel is arranged between the first synchronous middle roller reduction gearbox and the synchronous middle roller motor, the fourth synchronous belt is buckled with the upper half circumference of the fifth driven belt wheel after being buckled with the lower half circumference of the second tensioning wheel, a guide wheel is arranged between the first synchronous middle roller reduction gearbox and the second synchronous middle roller reduction gearbox, the fourth synchronous belt is buckled with the lower half circumference of the sixth driven belt wheel after being buckled with the upper half circumference of the guide wheel, and the fourth synchronous belt is a double-sided toothed belt, the rotating directions of a fifth driven belt wheel and a sixth driven belt wheel are opposite through the conversion of the second tension wheel, and the output shaft of the first synchronous middle roller reduction gearbox and the output shaft of the second synchronous middle roller reduction gearbox are fixedly connected with left and right middle roller input shafts on the long spinning frame through a coupler;

the tail synchronous traction transmission system comprises a synchronous rear roller motor, a fifth driving belt wheel is arranged on an output shaft of the synchronous rear roller motor, the fifth driving belt wheel is rotationally connected with a seventh driven belt wheel on an input shaft of a synchronous rear roller reduction box through a fifth synchronous belt, a third gear pair and a fourth gear pair are respectively arranged on a third swing arm and a fourth swing arm which are arranged in bilateral symmetry, the output shaft of the synchronous rear roller reduction box is meshed with the third gear pair, the synchronous rear roller gear is coaxially and fixedly connected with a rear roller input shaft through a coupler, and the synchronous rear roller gear is meshed with the third gear pair and the fourth gear pair in a transmission way to drive the rear half sections of the left rear roller and the right rear roller to rotate in different directions;

the first middle roller reduction box output shaft and the first synchronous middle roller reduction box output shaft are coaxially and correspondingly arranged, the second middle roller reduction box output shaft and the second synchronous middle roller reduction box output shaft are coaxially and correspondingly arranged, a pair of front roller input shafts, a pair of middle roller input shafts and a pair of rear roller input shafts which are connected to the headstock drafting transmission system are respectively and symmetrically arranged on two sides of the headstock drafting transmission system from bottom to top, the roller input shafts on each side are arranged on a straight line, a pair of middle roller input shafts and a pair of rear roller input shafts which are connected to the tailstock synchronous drafting transmission system are respectively and symmetrically arranged on two sides of the tailstock drafting transmission system from bottom to top, and the roller input shafts on each side are arranged on a straight line;

the front roller motor, the middle roller motor, the rear roller motor, the synchronous middle roller motor and the synchronous rear roller motor are synchronous servo motors, and the PLC is connected with the motor controller to control the motor rotating speed to synchronize the rollers.

Further, the first tensioning wheel and the second tensioning wheel are one-way rotating wheels.

The working principle of the invention is as follows: three synchronous servo motors and a reduction gearbox structure in a headstock drafting transmission system drive a front roller, a middle roller and a front half section of a rear roller of a long spinning frame to rotate in a left-right different-direction synchronous mode, two synchronous servo motors and a reduction gearbox structure in a tailstock synchronous drafting transmission system drive a rear half section of the middle roller and the rear roller of the long spinning frame to rotate in a different-direction synchronous mode, and a PLC controller monitors and controls the rotating speeds of the five motors to achieve synchronous rotation of the front roller, the middle roller and the rear roller of the long spinning frame. When the drafting process is adjusted, the control end display screen is used for inputting the drafting multiple to the PLC, and the PLC adjusts the motor controller to change the rotating speed of the motor.

Compared with the prior art, the invention has positive and obvious effect. According to the invention, through the five synchronous servo motors and the transmission structures arranged on the head and tail drafting transmission systems, the rotation speed synchronization between the rollers is realized through the PLC, the tail synchronization mechanism of the traditional long spinning frame is eliminated, the front roller working load is effectively reduced, the yarn quality and the equipment stability of the long spinning frame are improved, meanwhile, the drafting process is input to the PLC through the control end display screen to realize the drafting parameter adjustment, the process adjustment efficiency is improved, and the equipment maintenance cost is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the headstock front roller drive mechanism of the present invention;

FIG. 3 is a schematic view of the roller drive mechanism in the headstock of the present invention;

FIG. 4 is a schematic view of the headstock rear roller drive mechanism of the present invention;

FIG. 5 is a schematic view of the tailstock synchronous middle roller transmission mechanism of the present invention;

FIG. 6 is a schematic view of the tailstock synchronization rear roller transmission mechanism of the present invention.

Detailed Description