Automatic winder capable of automatically controlling yarn holding force

Abstract

The utility model provides an automatic winder capable of automatically controlling yarn holding force, a single spindle of the winder comprises an upper yarn guide plate, a lower yarn guide plate, a yarn holding force adjusting device and a single spindle controller, and the automatic winder is characterized in that the yarn holding force adjusting device comprises at least one set of yarn holding force adjusting unit, an actuating rotary element and a mounting frame; the yarn holding force adjusting unit is located on the portion, between the upper yarn guide plate and the lower yarn guide plate, of the installation frame and comprises a rotating shaft, a rotating disc, a yarn holding assembly and a flexible rotation transmission assembly, the actuating rotation element and the rotating shaft are arranged on the two sides of the installation frame respectively, the actuating rotation element is connected with one end of the rotating shaft through the flexible rotation transmission assembly, and the rotating disc is arranged at the other end of the rotating shaft. And the yarn holding assembly forms a zigzag yarn path on the turntable and the mounting frame. The single-spindle controller controls the actuating rotary element to drive the rotary shaft and the rotary disc to rotate, and the yarn holding force passing through the zigzag yarn path is automatically adjusted. And the high-speed yarn winding device is simple in structure and easy to maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of textile machinery manufacturing, and relates to the improvement of an automatic winding machine, in particular to an automatic winding machine which automatically controls the holding force of yarns. Background Art

[0002] In the winding process of the automatic winding machine, from the unwinding of the bobbin to the formation of the bobbin, it is necessary to control the tension from the unwinding of the yarn to the winding process in real time to keep the appropriate and stable size, so as to ensure good bobbin formation and uniform bobbin density. The tension device of the winding machine plays a key role. At present, the tension adding mechanism of the mainstream automatic winding machine mainly includes disc tension and grid tension. The disc tension device is usually called the tension disc, which applies tension to the running yarn. Due to the characteristics of its own tension adding principle, the disc tension can increase the average value without expanding the variance of the tension fluctuation during the winding process, and reduce the relative value of the difference in yarn tension. However, when the joints, impurities or thick sections on the yarn pass through the tension discs, it will cause the tension disc to impact and jump, generate new dynamic tension fluctuations, increase the fluctuation amplitude of the tension, and the faster the yarn guide speed, the greater the fluctuation amplitude. With the continuous increase in the winding speed, higher requirements are put forward for the performance of the automatic winding machine's additional tension device in controlling dynamic tension fluctuations.

[0003] How to design an automatic winding machine that automatically controls the yarn holding force, can effectively control the additional tension generated by pressurizing the yarn, thereby ensuring the stable winding tension of the output yarn, and has good impact absorption for sudden unexpected fluctuations of the yarn, while ensuring stable control of the yarn during high-speed winding, and has a simple structure and is easy to maintain. This is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0004] In order to solve the problems and shortcomings of the prior art, the utility model provides an automatic winding machine which automatically controls the yarn holding force, which can effectively control the additional tension generated by pressurizing the yarn, thereby ensuring the stable winding tension of the output yarn, and has good impact absorption for sudden unexpected fluctuations of the yarn. At the same time, it ensures stable control of the yarn during high-speed winding, and has a simple structure and is easy to maintain.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] An automatic winding machine that automatically controls yarn holding force, comprises a single spindle of the winding machine, the single spindle of the winding machine comprises a bobbin, a bobbin support arm, a grooved drum, a grooved drum transmission mechanism, a tube changing transmission mechanism, a yarn knotting mechanism, a tension control mechanism and a single spindle controller, the tension control mechanism comprises an upper yarn guide plate, a lower yarn guide plate and a yarn holding force adjustment device, the grooved drum transmission mechanism, the tube changing transmission mechanism, the yarn knotting mechanism and the tension control mechanism are all connected to the single spindle controller, an upper yarn guide groove is arranged on the upper yarn guide plate, and a lower yarn guide groove is arranged on the lower yarn guide plate, characterized in that the yarn holding force adjustment device comprises at least one set of yarn holding force adjustment unit, an actuating rotating element and a mounting frame, the actuating rotating element is connected to the single spindle controller, the yarn holding force adjustment unit is located on the mounting frame between the upper yarn guide plate and the lower yarn guide plate, The yarn holding force adjustment unit includes a rotating shaft, a turntable, a yarn holding assembly and a flexible rotary transmission assembly. The flexible rotary transmission assembly is installed in the middle of the mounting frame, and the actuating rotary element and the rotating shaft are respectively arranged on both sides of the mounting frame. The actuating rotary element is connected to the power input end of the flexible rotary transmission assembly, and the power output end of the flexible rotary transmission assembly is connected to one end of the rotating shaft. The turntable is arranged on the other end of the rotating shaft. The yarn holding assembly forms a zigzag yarn path with an adjustable bending angle on the turntable and the mounting frame. The controller controls the actuating rotary element to drive the rotating shaft and the turntable to rotate through the flexible rotary transmission assembly, automatically adjusts the yarn holding force passing through the zigzag yarn path, ensures stable control of the yarn during high-speed winding, and has impact absorption for sudden unexpected fluctuations of the yarn.

[0007] Improvement on the above technical solution: the flexible rotary transmission assembly comprises a flexible driven disk, a flexible transmission disk and a transmission disk rotating shaft, the flexible driven disk is fixed coaxially with the rotating disk, the flexible transmission disk and the transmission disk rotating shaft which is integral with the flexible transmission disk are assembled coaxially with the flexible driven disk, the flexible driven disk forms a flexible connection with the flexible transmission disk, and the transmission disk rotating shaft is powered by the actuating rotary element.

[0008] Further improvement of the above technical solution: the yarn holding assembly includes a tension rod I, a tension rod II, a magnet, a sensor I and a sensor II, the sensor I and the sensor II are respectively connected to the controller, the tension rod I and the tension rod II are symmetrically arranged on the edge of the turntable, a ceramic rod body is respectively arranged on the tension rod I and the tension rod II, and a yarn guide annular groove is arranged on the outer surface of the ceramic rod body, the magnet is arranged on the edge of the turntable between the tension rod I and the tension rod II, and the sensor I is correspondingly arranged on the mounting frame corresponding to the position of the magnet when the turntable is in the initial avoidance position, and the sensor II is correspondingly arranged on the mounting frame corresponding to the position of the magnet when the turntable is in the maximum set rotation angle.

[0009] Further improvement of the above technical solution: the yarn holding force adjustment device comprises two sets of yarn holding force adjustment units arranged vertically, wherein one set of the yarn holding force adjustment units is located directly below the upper yarn guide plate, and the other set of the yarn holding force adjustment units is located directly above the lower yarn guide plate, and the two sets of yarn holding force adjustment units are powered by the same actuating rotating element, or the two sets of yarn holding force adjustment units are each equipped with a set of actuating rotating elements to provide power separately.

[0010] The first specific improvement to the above technical solution: the yarn holding force adjustment device includes two sets of yarn holding force adjustment units, and is powered by one of the actuating rotating elements at the same time, each set of yarn holding force adjustment units includes a flexible rotary transmission assembly, the flexible rotary transmission assembly is arranged in the mounting frame, and includes a flexible driven disk, a flexible sleeve, a flexible transmission disk and a transmission disk rotating shaft, the turntable is arranged on one side of the mounting frame, the rotating shaft connected to the turntable extends into the mounting frame and is connected to one side of the flexible driven disk, the other side of the flexible driven disk is flexibly connected to one side of the flexible transmission disk through the flexible sleeve, the transmission disk rotating shaft arranged on the other side of the flexible transmission disk is rotatably connected to the mounting frame, the actuating rotating element is installed on the other side of the mounting frame, transmission teeth are arranged around the flexible transmission disk, a transmission gear is installed on the output shaft of the actuating rotating element, and the transmission gear is meshed with the transmission teeth on the two flexible transmission disks.

[0011] The second specific improvement to the above technical solution: the yarn holding force adjustment device includes a set of yarn holding force adjustment units actively driven by the actuating rotating element and a set of driven yarn holding force adjustment units, the flexible rotary transmission assembly in the yarn holding force adjustment unit actively driven by the actuating rotating element is arranged in the upper part of the mounting frame, including a flexible driven disk, a flexible sleeve, a flexible transmission disk and a transmission disk rotating shaft, the turntable is arranged on one side of the mounting frame, the rotating shaft connected to the turntable extends into the mounting frame and is connected to one side of the flexible driven disk, the other side of the flexible driven disk is flexibly connected to one side of the flexible transmission disk through the flexible sleeve, and the flexible The transmission disk shaft arranged on the other side of the transmission disk is rotatably connected to the mounting frame, the actuating rotating element is installed on the other side of the mounting frame, and the output shaft of the actuating rotating element is connected to the transmission disk shaft; the flexible rotary transmission assembly in the driven yarn holding force adjustment unit is arranged in the lower part of the mounting frame, including a pull rod turntable and a connecting rod, the turntable is arranged on one side of the mounting frame, the rotating shaft connected to the turntable extends into the mounting frame, and the pull rod turntable is installed on the rotating shaft extending into the mounting frame, and the pull rod turntable is connected to the flexible sleeve in the yarn holding force adjustment unit actively driven by the actuating rotating element through the connecting rod, forming a parallel four-bar linkage transmission.

[0012] A third specific improvement to the above technical solution: the yarn holding force adjustment device includes two sets of yarn holding force adjustment units, and is powered by one of the actuating rotating elements at the same time. Each set of yarn holding force adjustment units includes a flexible rotary transmission assembly, which is arranged in the mounting frame and includes a flexible driven disk, a vibration absorbing spring, a flexible transmission disk and a transmission disk rotating shaft. The rotating disk is arranged on one side of the mounting frame, and the rotating shaft connected to the rotating disk extends into the mounting frame and is connected to one side of the flexible driven disk. Spring fixing columns are respectively installed on the sides opposite to the flexible driven disk and the flexible transmission disk. At least two of the vibration absorbing springs are respectively connected to the spring fixing columns on the flexible driven disk and the flexible transmission disk at both ends to achieve a flexible connection. The transmission disk rotating shaft arranged on the other side of the flexible transmission disk is rotatably connected to the mounting frame. The actuating rotating element is installed on the other side of the mounting frame. Transmission teeth are arranged around the flexible transmission disk. A transmission gear is installed on the output shaft of the actuating rotating element, and the transmission gear is meshed with the transmission teeth on the two flexible transmission disks.

[0013] Compared with the prior art, the utility model has the following advantages and positive effects:

[0014] The utility model can effectively control the additional tension generated by pressurizing the yarn, thereby ensuring the stable winding tension of the output yarn. The device also has good impact absorption for sudden unexpected fluctuations of the yarn. At the same time, the tension adding device can limit the yarn left and right and front and back, thereby ensuring stable control of the yarn during high-speed winding, and the structure is simple and easy to maintain. The utility model eliminates the need for the opening and closing action process of the prior art, and can ensure the yarn feeding and pressurizing functions, and when a large holding force is required, multiple units can be combined for pressurization to increase the maximum additional tension of the device on the yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view of a yarn holding force adjusting unit in an automatic winding machine for automatically controlling the yarn holding force of the utility model;

[0016] Figure 2 It is a schematic diagram of the inner side of the initial position turntable of the yarn holding force adjustment unit in the automatic winding machine for automatically controlling the yarn holding force of the utility model;

[0017] Figure 3 It is a schematic diagram of the inner side of the turntable of the yarn holding force adjustment unit in the automatic winding machine for automatically controlling the yarn holding force of the utility model during the yarn unwinding process;

[0018] Figure 4 It is a side view of a first specific implementation scheme of a yarn holding force control device in an automatic winding machine for automatically controlling the yarn holding force of the utility model;

[0019] Figure 5 It is a side view of a second specific implementation scheme of a yarn holding force control device in an automatic winding machine for automatically controlling the yarn holding force of the utility model;

[0020] Figure 6 It is a side view of a third specific implementation scheme of a yarn holding force control device in an automatic winding machine for automatically controlling the yarn holding force of the utility model.

[0021] In the figure: 1. upper yarn guide plate; 1.1. upper yarn guide groove; 2. lower yarn guide plate; 2.1. lower yarn guide groove; 3. tension rod II; 4. sensor II; 5. sensor I; 6. magnet; 7. tension rod I; 8. rotating shaft; 9. turntable; 10. yarn; 11. ceramic rod; 12. mounting frame; 13. flexible driven disk; 14. flexible sleeve; 15. flexible transmission disk; 16. transmission disk rotating shaft; 17. actuating rotating element; 18. transmission gear; 19. connecting rod; 20. pull rod turntable; 21. vibration absorbing spring; 22. spring fixing column. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] See also Figure 1-Figure 6 The utility model discloses an embodiment of an automatic winding machine for automatically controlling the yarn holding force, comprising a single spindle of the winding machine, the single spindle of the winding machine comprises a tube changing transmission mechanism, a yarn knotting mechanism, a tension control mechanism and a single spindle controller, the tension control mechanism comprises an upper yarn guide plate 1, a lower yarn guide plate 2 and a yarn holding force adjustment device, the groove drum transmission mechanism, the tube changing transmission mechanism, the yarn knotting mechanism and the tension control mechanism are all connected to the single spindle controller, an upper yarn guide groove 1.1 is provided on the upper yarn guide plate 1, and a lower yarn guide groove 2.1 is provided on the lower yarn guide plate 2. The yarn holding force adjustment device comprises at least one set of yarn holding force adjustment units, an actuating rotary element 17 and a mounting frame 12, and the actuating rotary element 17 is connected to the controller. The yarn holding force adjustment unit is located on the mounting frame 12 between the upper yarn guide plate 1 and the lower yarn guide plate 2. The yarn holding force adjustment unit includes a rotating shaft 8, a rotating disk 9, a yarn holding assembly and a flexible rotary transmission assembly (equivalent to an elastic coupling, which has a certain flexibility to absorb sudden vibrations and a certain flexibility to transmit torque). The flexible rotary transmission assembly is installed in the middle of the mounting frame 12, and the actuating rotary element 17 and the rotating shaft 8 are respectively arranged on both sides of the mounting frame 12. The actuating rotary element 17 is connected to the power input end of the flexible rotary transmission assembly, the power output end of the flexible rotary transmission element 17 is connected to one end of the rotating shaft 8, and the rotating disk 9 is arranged on the other end of the rotating shaft 8. The yarn holding assembly forms a zigzag yarn path with an adjustable bending angle on the rotating disk 9 and the mounting frame 12 (specifically, the actuating rotary element 17 drives the two ceramic rods 11 to rotate with the rotating disk 9, and is formed by the misalignment of the guide points of the upper yarn guide groove 1.1 and the lower yarn guide groove 2.1). The controller controls the actuating rotating element 17 to drive the rotating shaft 8 and the turntable 9 to rotate through the flexible rotating transmission assembly, automatically adjusting the holding force of the yarn 10 passing through the tortuous yarn path, ensuring stable control of the yarn 10 during high-speed winding, and having impact absorption for sudden unexpected fluctuations of the yarn 10.

[0024] Specifically, the flexible rotary transmission assembly includes a flexible driven disc 13, a flexible transmission disc 15 and a transmission disc rotating shaft 16. The flexible driven disc 13 is fixed coaxially with the rotating disc 9. The flexible transmission disc 15 and the transmission disc rotating shaft 16 which are integrated with the flexible transmission disc 15 are coaxially assembled with the flexible driven disc 13. The flexible driven disc 13 and the flexible transmission disc 15 form a flexible connection. The transmission disc rotating shaft 16 is powered by the actuating rotary element 17. The flexible driven disc 13 and the flexible transmission disc 15 can be flexibly connected through a rubber structure or a spring. It is mainly used to play a damping and buffering role when the tension of the yarn 10 changes suddenly.

[0025] Furthermore, the yarn holding assembly includes a tension rod I7, a tension rod II3, a magnet 6, a sensor I5 and a sensor II4, and the sensor I5 and the sensor II4 are respectively connected to the controller. The tension rod I7 and the tension rod II3 are symmetrically arranged on the edge of the turntable 9, and a ceramic rod 11 is arranged on each of the tension rods I7 and II3 (to facilitate the introduction of the yarn 10), and a yarn guide annular groove is arranged on the outer surface of the ceramic rod 11. The magnet 6 is arranged on the edge of the turntable 9 between the tension rod I7 and the tension rod II3, corresponding to the position of the magnet 6 when the turntable 9 is in the initial avoidance position (such as Figure 1 As shown), a sensor 15 is correspondingly arranged on the mounting frame 12, corresponding to the position of the magnetic steel 6 when the turntable 9 is rotated at the maximum setting angle (as shown in FIG. Figure 2 As shown), a sensor II4 is correspondingly arranged on the mounting frame 12 to prevent the turntable 9 from being damaged by excessive rotation when the yarn is broken or when an erroneous command is given.

[0026] Furthermore, if Figure 3 As shown, the yarn holding force adjustment device includes two sets of yarn holding force adjustment units arranged in an upper and lower arrangement, wherein one set of the yarn holding force adjustment units is located directly below the upper yarn guide plate 1, and the other set of the yarn holding force adjustment units is located directly above the lower yarn guide plate 2. The two sets of yarn holding force adjustment units are arranged on the mounting frame 12, and the two sets of yarn holding force adjustment units can be powered by the same actuating rotating element 17, or the two sets of yarn holding force adjustment units can also be configured with a set of actuating rotating elements 17 respectively, and powered separately. In this way, the two sets of yarn holding force adjustment units are connected in series to form a longer tortuous yarn path, which can increase the clamping force on the yarn 10 to meet the needs of actual production. Since the rotation angle of the turntable 9 is too large when using one set of yarn holding force adjustment devices, two or more sets (limited by space) of yarn holding force adjustment devices are used, so that the rotation angle can be small and there are multiple folding angles.

[0027] In specific implementation, the yarn holding force adjustment device can adopt the following specific scheme:

[0028] The first specific implementation scheme of the yarn holding force adjustment device is as follows: Figure 4As shown, the yarn holding force adjustment device includes two sets of yarn holding force adjustment units, and is powered by an actuating rotary element 17. Each set of yarn holding force adjustment units includes a flexible rotary transmission assembly, which is arranged in the mounting frame 12, and the flexible rotary transmission assembly includes a flexible driven disc 13, a flexible sleeve 14, a flexible transmission disc 15 and a transmission disc rotating shaft 16. The turntable 9 is arranged on one side of the mounting frame 12, and the rotating shaft 8 connected to the turntable 9 extends into the mounting frame 12 and is connected to one side of the flexible driven disc 13. The other side of the flexible driven disc 13 is flexibly connected to one side of the flexible transmission disc 15 through the flexible sleeve 14. The transmission disc rotating shaft 16 arranged on the other side of the flexible transmission disc 15 is rotatably connected to the mounting frame 12, and the actuating rotary element 17 is installed on the other side of the mounting frame 12. Transmission teeth are arranged around the flexible transmission disc 15, and a transmission gear 18 is installed on the output shaft of the actuating rotary element 17. The transmission gear 18 is respectively engaged with the transmission teeth on the flexible transmission discs 15 in the two sets of yarn holding force adjustment units. In order to save space and cost, the transmission gear 18 of one actuating rotary element 17 is simultaneously engaged with the transmission teeth on the two flexible transmission discs 15 arranged above and below, and the two flexible transmission discs 15 have the same direction of rotation.

[0029] A second specific implementation scheme of the yarn holding force adjusting device is as follows: Figure 5 As shown, the yarn holding force adjusting device includes a set of yarn holding force adjusting units actively driven by an actuating rotating element 17 and a set of driven yarn holding force adjusting units. The flexible rotary transmission component in the yarn holding force adjusting unit actively driven by the actuating rotating element 17 is arranged in the upper part of the mounting frame 12. The flexible rotary transmission component includes a flexible driven disk 13, a flexible sleeve 14, a flexible transmission disk 15 and a transmission disk rotating shaft 16. The turntable 9 is arranged on one side of the mounting frame 12. The rotating shaft 8 connected to the turntable 9 extends into the mounting frame 12 and is connected to one side of the flexible driven disk 13. The other side of the flexible driven disk 13 is flexibly connected to one side of the flexible transmission disk 15 through the flexible sleeve 14. The transmission disk rotating shaft 16 arranged on the other side of the flexible transmission disk 15 is rotatably connected to the mounting frame 12. The actuating rotating element 17 is installed on the other side of the mounting frame 12, and the output shaft of the actuating rotating element 17 is connected to the transmission disk rotating shaft 16. The flexible rotary transmission assembly in the driven yarn holding force adjustment unit is arranged at the lower part of the mounting frame 12, and includes a pull rod turntable 20 and a connecting rod 19. The turntable 9 is arranged on one side of the mounting frame 12, and the rotating shaft 8 connected to the turntable 9 extends into the mounting frame 12. The pull rod turntable 20 is installed on the rotating shaft 8 extending into the mounting frame 12. The pull rod turntable 20 is connected to the flexible sleeve 14 in the yarn holding force adjustment unit actively driven by the actuating rotating element 17 through the connecting rod 19, forming a parallel four-bar linkage transmission.

[0030] A third specific implementation scheme of the yarn holding force adjusting device is as follows: Figure 6 As shown, the yarn holding force adjustment device includes two sets of yarn holding force adjustment units, and is powered by one of the actuating rotating elements 17 at the same time. Each set of yarn holding force adjustment units includes a flexible rotary transmission assembly, which is arranged in the mounting frame 12. The flexible rotary transmission assembly includes a flexible driven disk 13, a vibration absorbing spring 21, a flexible transmission disk 15 and a transmission disk rotating shaft 16. The turntable 9 is arranged on one side of the mounting frame 12, and the rotating shaft 8 connected to the turntable 9 extends into the mounting frame 12 and is connected to one side of the flexible driven disk 13. The spring fixing columns 22 are respectively installed on the sides opposite to the flexible transmission disk 15 of the flexible driven disk 13, and at least two vibration absorbing springs 21 are respectively connected to the spring fixing columns 22 on the flexible driven disk 13 and the flexible transmission disk 15 at both ends to realize flexible connection. The transmission disk shaft 16 arranged on the other side of the flexible transmission disk 15 is rotatably connected to the mounting frame 12, and the actuating rotating element 17 is installed on the other side of the mounting frame 12. Transmission teeth are arranged around the flexible transmission disk 15, and a transmission gear 18 is installed on the output shaft of the actuating rotating element 17, which are respectively engaged with the transmission teeth on the flexible transmission disks 15 in the two sets of yarn holding force adjustment units.

[0031] Preferably, the actuating rotary element 17 is a stepping motor or a rotary driving component with similar functions.

[0032] The main innovative points protected by the utility model are as follows: 1. The yarn holding force adjustment unit includes a rotating shaft 8, a turntable 9 and two ceramic rods 11 for controlling the yarn symmetrically arranged on the turntable 9. The ceramic rods 11 are used to resist wear when pressing the yarn 10. The two ceramic rods 11 arranged in the front and back directions are to easily feed the yarn 10, and the turntable 9 is driven to rotate forward or reverse by the actuating rotating element 17. 2. In order to prevent the yarn 10 from jumping back and forth along the cylindrical surface during pressing, there is a yarn guide annular groove on the cylindrical surface of the ceramic rod 11, so that the yarn 10 is just in the yarn guide annular groove in the front and back directions, blocking its front and back trajectory movement. 3. The rotating shaft 8 of the yarn holding force adjustment unit is connected to the actuating rotating element 17 through a flexible rotary connection assembly. The flexible rotary connection assembly is equivalent to an elastic coupling, and its function is to absorb sudden changes in tension fluctuations.

[0033] The working principle of the utility model: in the initial avoidance position (default initial position, when the magnet 6 senses the sensor 15), the two ceramic rods 11 are located on both sides of the central axis of the winding yarn path to make way for the yarn path, so that the yarn 10 can be easily fed in without additional action when tying a knot (unlike a tension disk, which requires additional action to open before feeding the yarn and then clamping it). After the yarn is fed, the yarn 10 forms a certain straight line under the upper and lower pulling forces, and then the flexible rotary transmission component is driven by the actuating rotary element 17 to rotate the turntable 9 clockwise by a certain angle (this angle is completed by the actuating rotary element 17 according to the tension required by the spun yarn 10, so that the two ceramic rods 11 and the upper yarn guide groove 1.1 and the lower yarn guide groove 2.1 form a certain zigzag line (equivalent to the upper ceramic rod 11 pressing to the right and the lower ceramic rod 11 pressing to the left when the yarn 10 is straightened in the vertical direction), thereby adding a certain tension to the yarn 10 for pressurization. As the rotation angle increases, the yarn 10 becomes more tortuous, the encirclement angle of the yarn 10 at each yarn guide point becomes larger, the friction resistance formed becomes larger, and the increased holding force of the yarn 10 becomes larger. Conversely, reversing can reduce the holding force of the yarn 10 accordingly. At the same time, there is a tension sensor on the yarn path, which can feed back the yarn tension value to the controller in real time. The controller compares the real-time tension of the yarn with the preset tension value of the host computer. If it exceeds the preset tension value range, the controller sends a signal, which is transmitted to the actuating rotating element 17 after passing through the amplifier, so that it rotates the corresponding angle to control the tension of the yarn 10 in real time. When the yarn 10 is cut or accidentally broken, the controller sends a command to actuate the rotating element 17 to quickly reverse to the initial avoidance position (when it turns to a certain angle, the magnet 6 on the turntable 9 triggers the sensor I5 to stop the rotation of the actuating rotating element 17; to prevent over-rotation, there is also a sensor II4 at the maximum rotation working angle of the turntable 9 to trigger the limit), so that the yarn 10 can be pulled in and re-pressurized.

[0034] The flexible driven disc 13 and the flexible driving disc 15 in the flexible rotary transmission assembly of the utility model are connected by flexibility (such as rubber) or elasticity (such as spring) to absorb tension fluctuations and mechanical vibrations during the operation of the yarn 10.

[0035] See also Figure 1-Figure 6 The utility model provides a control method for the yarn holding force control device, and the control method comprises the following steps:

[0036] Step 1: The yarn 10 is led out from the bobbin and passes through the lower yarn guide groove 2.1 on the lower yarn guide plate 2, the zigzag yarn path formed by the yarn holding assembly, the upper yarn guide groove 1.1 of the upper yarn guide plate 1, and then connected to the bobbin. The zigzag yarn path is initially in an avoidance position, and the yarn 10 passing through the flexible zigzag yarn path is in a straight line;

[0037] Step 2: When the yarn 10 is unwound, it is unwound from the bobbin and wound onto the bobbin. At this time, the yarn has formed a certain tension. The controller controls the actuating rotating element 17 to drive the rotating shaft 8 and the turntable 9 to rotate, so that the yarn 10 passing through the tortuous yarn path is in a folded line shape, and the yarn is clamped, effectively controlling the additional tension generated by pressurizing the yarn 10;

[0038] Step 3: When the yarn 10 produces sudden unexpected fluctuations, the controller controls the actuating rotating element 17 to drive the rotating shaft 8 and the turntable 9 to increase or decrease the rotation angle to ensure a stable winding tension of the output yarn 10.

[0039] Improvement on the above technical solution: In the above step 1, the yarn 10 is in a straight line when passing through the zigzag yarn path and passes through the center of the turntable 9. The zigzag yarn path is in an initial avoidance position. The tension rod I7 and the tension rod II3 are respectively located on both sides of the yarn 10. The magnet 6 on the turntable 9 coincides with the position of the sensor I5, and the sensor II4 is close to the tension rod II3.

[0040] In the above step 2, when the yarn unwinding starts, the controller controls the actuating rotating element 17 to drive the turntable 9 to rotate at a suitable angle, and the tension rod I7 and the tension rod II3 approach the yarn respectively, so that the yarn 10 is embedded in the yarn guide annular groove of the ceramic rod 11 on the tension rod I7 and the tension rod II3, and the front and rear positions of the yarn 10 are limited, so that the yarn 10 passing through the tortuous yarn path is in a broken line shape, and the tortuous yarn path is in a working position, providing the required holding force for the yarn 10; at the same time, in conjunction with the tension sensor on the yarn path, after the yarn tension value is fed back to the controller in real time, the yarn 10 is adjusted according to the yarn tension value. The real-time tension of the yarn 10 causes the actuating rotating element 17 to rotate a corresponding angle, thereby adjusting the tension of the yarn 10 in real time during high-speed winding and reducing the fluctuation of the winding tension; the greater the rotation angle of the actuating rotating element 17 to drive the turntable 9, the greater the clamping force on the yarn. When the magnet 6 approaches the sensor II4, the turntable 9 reaches the maximum rotation angle and limits the left and right position of the yarn 10; when the yarn 10 is cut, the zigzag yarn path returns to the initial avoidance position, and the tension rod I7 and the tension rod II3 rotate to the predetermined initial position, which is convenient for the subsequent up and down head finding and twisting actions.

[0041] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An automatic winding machine for automatically controlling the yarn holding force, comprising a single spindle of the winding machine, the single spindle of the winding machine comprising a bobbin, a bobbin support arm, a grooved drum, a grooved drum transmission mechanism, a tube changing transmission mechanism, a yarn knotting mechanism, a tension control mechanism and a single spindle controller, the tension control mechanism comprising an upper yarn guide plate, a lower yarn guide plate and a yarn holding force adjustment device, the grooved drum transmission mechanism, the tube changing transmission mechanism, the yarn knotting mechanism and the tension control mechanism are all connected to the single spindle controller, an upper yarn guide groove is arranged on the upper yarn guide plate, and a lower yarn guide groove is arranged on the lower yarn guide plate, characterized in that The yarn holding force adjustment device includes at least one set of yarn holding force adjustment unit, an actuating rotating element and a mounting frame, the actuating rotating element is connected to the single spindle controller, the yarn holding force adjustment unit is located on the mounting frame between the upper yarn guide plate and the lower yarn guide plate, the yarn holding force adjustment unit includes a rotating shaft, a turntable, a yarn holding assembly and a flexible rotating transmission assembly, the flexible rotating transmission assembly is installed in the middle of the mounting frame, the actuating rotating element and the rotating shaft are respectively arranged on both sides of the mounting frame, the actuating rotating element and the flexible rotating transmission assembly are connected to the rotating shaft and the rotating shaft. The flexible rotary transmission assembly is connected to a power input end thereof, a power output end thereof is connected to one end of the rotating shaft, the turntable is arranged on the other end of the rotating shaft, the yarn holding assembly forms a zigzag yarn path with an adjustable bending angle on the turntable and the mounting frame, the controller controls the actuating rotary element to drive the rotating shaft and the turntable to rotate through the flexible rotary transmission assembly, automatically adjusts the yarn holding force passing through the zigzag yarn path, ensures stable control of the yarn during high-speed winding, and has impact absorption for sudden unexpected fluctuations of the yarn.

2. The automatic winding machine for automatically controlling the yarn holding force according to claim 1, characterized in that: The flexible rotary transmission assembly includes a flexible driven disk, a flexible transmission disk and a transmission disk rotating shaft. The flexible driven disk is fixed coaxially with the rotating disk. The flexible transmission disk and the transmission disk rotating shaft which are integrated with the flexible transmission disk are assembled coaxially with the flexible driven disk. The flexible driven disk forms a flexible connection with the flexible transmission disk, and the transmission disk rotating shaft is powered by the actuating rotary element.

3. The automatic winding machine for automatically controlling the yarn holding force according to claim 2, characterized in that: The yarn holding assembly includes a tension rod I, a tension rod II, a magnet, a sensor I and a sensor II, the sensor I and the sensor II are respectively connected to the controller, the tension rod I and the tension rod II are symmetrically arranged on the edge of the turntable, a ceramic rod is respectively arranged on the tension rod I and the tension rod II, and a yarn guide annular groove is arranged on the outer surface of the ceramic rod body, the magnet is arranged on the edge of the turntable between the tension rod I and the tension rod II, and the sensor I is correspondingly arranged on the mounting frame corresponding to the position of the magnet when the turntable is in the initial avoidance position, and the sensor II is correspondingly arranged on the mounting frame corresponding to the position of the magnet when the turntable is in the maximum set rotation angle.

4. The automatic winding machine for automatically controlling the yarn holding force according to any one of claims 1 to 3, characterized in that: The yarn holding force adjustment device includes two sets of yarn holding force adjustment units arranged vertically, wherein one set of the yarn holding force adjustment units is located directly below the upper yarn guide plate, and the other set of the yarn holding force adjustment units is located directly above the lower yarn guide plate. The two sets of yarn holding force adjustment units are arranged on a mounting frame, and the two sets of yarn holding force adjustment units are powered by the same actuating rotating element, or the two sets of yarn holding force adjustment units are each equipped with a set of actuating rotating elements to provide power separately.

5. The automatic winding machine for automatically controlling the yarn holding force according to any one of claims 1 to 3, characterized in that: The yarn holding force adjustment device includes two sets of yarn holding force adjustment units, and are powered by one of the actuating rotating elements at the same time. The flexible rotary transmission assembly in each set of yarn holding force adjustment units is arranged in the mounting frame, including a flexible driven disk, a flexible sleeve, a flexible transmission disk and a transmission disk rotating shaft. The turntable is arranged on one side of the mounting frame, and the rotating shaft connected to the turntable extends into the mounting frame and is connected to one side of the flexible driven disk. The other side of the flexible driven disk is flexibly connected to one side of the flexible transmission disk through the flexible sleeve. The transmission disk rotating shaft arranged on the other side of the flexible transmission disk is rotatably connected to the mounting frame. The actuating rotating element is installed on the other side of the mounting frame, and transmission teeth are arranged around the flexible transmission disk. A transmission gear is installed on the output shaft of the actuating rotating element, and the transmission gear is meshed with the transmission teeth on the two flexible transmission disks.

6. The automatic winding machine for automatically controlling the yarn holding force according to any one of claims 1 to 3, characterized in that: The yarn holding force adjustment device includes two sets of yarn holding force adjustment units, and are powered by one of the actuating rotating elements at the same time. Each set of yarn holding force adjustment units includes a flexible rotary transmission assembly, which is arranged in the mounting frame and includes a flexible driven disk, a flexible sleeve, a flexible transmission disk and a transmission disk rotating shaft. The turntable is arranged on one side of the mounting frame, and the rotating shaft connected to the turntable extends into the mounting frame and is connected to one side of the flexible driven disk. The other side of the flexible driven disk is flexibly connected to one side of the flexible transmission disk through the flexible sleeve. The transmission disk rotating shaft arranged on the other side of the flexible transmission disk is rotatably connected to the mounting frame. The actuating rotating element is installed on the other side of the mounting frame, and transmission teeth are arranged around the flexible transmission disk. A transmission gear is installed on the output shaft of the actuating rotating element, and the transmission gear is meshed with the transmission teeth on the two flexible transmission disks.

7. The automatic winding machine for automatically controlling the yarn holding force according to any one of claims 1 to 3, characterized in that: The yarn holding force adjustment device includes a set of yarn holding force adjustment units actively driven by the actuating rotating element and a set of driven yarn holding force adjustment units. The flexible rotary transmission assembly in the yarn holding force adjustment unit actively driven by the actuating rotating element is arranged in the upper part of the mounting frame, including a flexible driven disk, a flexible sleeve, a flexible transmission disk and a transmission disk rotating shaft. The rotating disk is arranged on one side of the mounting frame, and the rotating shaft connected to the rotating disk extends into the mounting frame and is connected to one side of the flexible driven disk. The other side of the flexible driven disk is flexibly connected to one side of the flexible transmission disk through the flexible sleeve. The other side of the flexible transmission disk is arranged The transmission disk shaft is rotatably connected to the mounting frame, the actuating rotating element is installed on the other side of the mounting frame, and the output shaft of the actuating rotating element is connected to the transmission disk shaft; the flexible rotary transmission assembly in the driven yarn holding force adjustment unit is arranged at the lower part of the mounting frame, including a pull rod turntable and a connecting rod, the turntable is arranged on one side of the mounting frame, the rotating shaft connected to the turntable extends into the mounting frame, and the pull rod turntable is installed on the rotating shaft extending into the mounting frame, and the pull rod turntable is connected to the flexible sleeve in the yarn holding force adjustment unit actively driven by the actuating rotating element through the connecting rod, forming a parallel four-bar linkage transmission.

8. The automatic winding machine for automatically controlling the yarn holding force according to any one of claims 1 to 3, characterized in that: The yarn holding force adjustment device includes two sets of yarn holding force adjustment units, and are powered by one of the actuating rotating elements at the same time. Each set of yarn holding force adjustment units includes a flexible rotary transmission assembly, which is arranged in the mounting frame and includes a flexible driven disk, a vibration absorbing spring, a flexible transmission disk and a transmission disk rotating shaft. The rotating disk is arranged on one side of the mounting frame, and the rotating shaft connected to the rotating disk extends into the mounting frame and is connected to one side of the flexible driven disk. Spring fixing columns are respectively installed on the sides opposite to the flexible driven disk and the flexible transmission disk. At least two of the vibration absorbing springs are respectively connected to the flexible driven disk and the spring fixing columns on the flexible transmission disk at both ends to achieve a flexible connection. The transmission disk rotating shaft arranged on the other side of the flexible transmission disk is rotatably connected to the mounting frame. The actuating rotating element is installed on the other side of the mounting frame. Transmission teeth are arranged around the flexible transmission disk. A transmission gear is installed on the output shaft of the actuating rotating element, and the transmission gear is meshed with the transmission teeth on the flexible transmission disk.

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