Silk yarn traction and stretching device for spinning

Abstract

The invention relates to the technical field of spinning traction, and discloses a spinning silk yarn traction stretching device which comprises a shell, a control motor is fixedly installed in the shell, an output shaft of the control motor is fixedly connected with a threaded rod, the curved surface of the threaded rod is in threaded connection with a Y-shaped rod and a movable plate, and a tensioning wheel is rotationally installed in the middle of the Y-shaped rod; and a driving motor is fixedly mounted on the upper surface of the moving plate. The tension adjusting mechanism moves upwards to drive the spun yarn to move upwards and to be in a tightened state slowly, at the moment, the spun yarn extrudes the pressure-bearing shell on the upper portion, the pressure-bearing shell extrudes the piezoelectric element and synchronously drives the electrode to move towards the central axis of the main shaft, the piezoelectric element is subjected to mechanical pressure, charge separation is generated, and a voltage signal is formed; therefore, the problem that existing equipment cannot accurately detect the spinning tension and cannot adjust the spinning tension is solved.

Description

Technical Field

[0001] The present application relates to the field of spinning and drawing technology, and in particular to a spinning yarn drawing and stretching device. Background Art

[0002] The yarn pulling and stretching device for spinning is a key equipment used in the fiber production process. It is mainly used to cool, stretch and shape the newly formed fibers to ensure that the fibers have the required physical properties and quality characteristics. The design and parameter setting of this device directly affect the strength, uniformity and other important properties of the final fiber product. The existing yarn pulling and stretching device for spinning consists of a series of guide rollers, which are used to fix and pull the fibers forward. The speed of these rollers can be adjusted to control the stretching ratio of the fibers, which in turn affects the strength and fineness of the final fibers. However, a series of guide rollers cannot accurately detect the spinning tension during pulling, and it is even more impossible to adjust the spinning tension through the guide rollers, which easily leads to uneven spinning pulling. Summary of the Invention

[0003] The present application proposes a yarn pulling and stretching device for spinning, which has the advantages of adjusting and detecting the size of spinning tension, and is used to solve the problem that existing equipment cannot accurately detect the size of spinning tension and adjust the spinning tension.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a spinning yarn pulling and stretching device, comprising a housing, a control motor fixedly installed inside the housing, an output shaft of the control motor fixedly connected to a threaded rod, a Y-shaped rod and a movable plate are threadedly connected to the curved surface of the threaded rod, a tensioning wheel is rotatably installed in the middle of the Y-shaped rod, a driving motor is fixedly installed on the upper surface of the movable plate, an output shaft of the driving motor is fixedly connected to a transmission rod, a middle pulley is fixedly connected to the curved surface of the transmission rod, and sliding blocks are rotatably installed on the right ends of the transmission rod and the Y-shaped rod; Two wire rollers, a small pulley is fixedly connected to the middle of the front wire roller, and a large pulley is fixedly connected to the middle of the rear wire roller, and a cross belt is connected between the small pulley, the large pulley and the middle pulley. If the above structure is in operation, a cross belt is connected between the small pulley, the large pulley and the middle pulley, the size of the large pulley is larger than that of the middle pulley, and the size of the small pulley is smaller than that of the middle pulley, so that the rotation speed of the front wire roller is greater than the rotation speed of the tension adjustment mechanism, and the rotation speed of the tension adjustment mechanism is greater than the rotation speed of the rear wire roller, so that the spinning is stretched; The tension adjusting mechanism is fixedly connected to the right side of the transmission rod.

[0005] Preferably, a telescopic rod is fixedly installed inside the transmission rod, and a push piece is fixedly connected to the telescopic end of the telescopic rod; It further includes a slide bar, which is fixedly installed inside the housing, and the slide bar is slidably connected to the Y-shaped rod and the moving plate.

[0006] Preferably, the tension adjusting mechanism includes a main shaft. A main liquid channel and a plurality of liquid distribution cavities are formed inside the main shaft. A control valve is provided between the liquid distribution cavity and the main shaft. When the control valve is in an open state, the main liquid channel is communicated with the control valve. A plurality of push rods are slidably connected inside the liquid distribution cavity. An arc-shaped piece is fixedly connected to the outer end of the push rod. A spring is provided between the push rod and the liquid distribution cavity. A plurality of tension detectors are fixedly installed on the curved surface of the main shaft. With the above structure, during operation, by opening the control valve, then the telescopic rod extends, driving the push piece to move to the right, thereby pushing the hydraulic oil inside the main liquid channel into the liquid distribution cavity. As the liquid enters the liquid distribution cavity, it will push a plurality of push rods and arc-shaped pieces to move outward and compress the spring, causing the tension detector to move outward, and further making the wire more taut. The tension detected by the tension detector will also increase. When the tension reaches the preset value, the telescopic rod will stop extending. Similarly, when the detected tension is too large, the telescopic rod will shorten, reducing the tightness of the spinning, and further reducing the tension, so that the tension of each spinning can be accurately adjusted, thereby ensuring the quality of the spinning.

[0007] Preferably, the tension detector includes two electrical connection rings. A plurality of electrodes are slidably connected between the two electrical connection rings. Piezoelectric elements are fixedly installed on both the inner and outer sides of the electrode. A pressure-bearing shell is fixedly installed on the outer side of the outer piezoelectric element. With the above structure, during operation, by controlling the motor to work, driving the threaded rod to rotate, thereby driving the moving plate to move upward. The rotation of the threaded rod will also drive the Y-shaped rod and the tensioning wheel to move downward. When the moving plate moves upward, it will drive the driving motor, the transmission rod, and the tension adjusting mechanism to move upward. The upward movement of the tension adjusting mechanism will drive the spinning to move upward and slowly become taut. At this time, the spinning will squeeze the upper pressure-bearing shell, and the pressure-bearing shell will squeeze the piezoelectric element and synchronously drive the electrode to move towards the central axis of the main shaft. The piezoelectric element is subjected to mechanical pressure and will generate charge separation to form a voltage signal, thereby detecting the magnitude of the tension of the spinning, thus solving the problem that the existing equipment cannot accurately detect the magnitude of the tension of the spinning and adjust the tension of the spinning.

[0008] Preferably, both of the sliding blocks are slidably connected to the housing. A plurality of annular grooves are formed in the right parts of both of the wire guide rollers, and both of the wire guide rollers are rotatably connected to the housing. With the above structure, during operation, the spinning will squeeze the upper pressure-bearing shell, and the pressure-bearing shell will squeeze the piezoelectric element and synchronously drive the electrode to move towards the central axis of the main shaft. During the process, the electrode will always be in contact with the electrical connection rings on both sides.

[0009] Preferably, the main shaft is fixedly connected to the transmission rod, and the push rod is slidably connected to the main shaft.

[0010] Preferably, hydraulic oil is filled inside both the main liquid channel and the multiple liquid distribution cavities.

[0011] Preferably, the two electrical connection rings are fixedly connected to the main shaft, the piezoelectric element on the inner side is fixedly connected to the arc-shaped piece, and the pressure-bearing shell is slidably connected to the electrical connection rings on both sides.

[0012] Preferably, the pushing piece is in interference fit with the main liquid channel, and the pushing piece is located at the left part of the main liquid channel. In the above structure, when working, the telescopic rod extends, driving the pushing piece to move to the right, thereby pushing the hydraulic oil inside the main liquid channel into the inside of the liquid distribution cavity; the telescopic rod will shorten, driving the pushing piece to move to the left, and the spring pushes the push rod to move towards the center, thereby squeezing the hydraulic oil inside the liquid distribution cavity back into the inside of the main liquid channel.

[0013] Preferably, the tension pulley abuts against the crossed belt. In the above structure, when working, through the setting of the crossed belt, the driving motor works, driving the transmission rod to rotate, and the transmission rod drives the middle pulley and the tension adjusting mechanism to rotate. The middle pulley drives the small pulley and the large pulley to rotate in the opposite direction through the crossed belt, thereby realizing the traction and stretching of the spinning.

[0014] The beneficial effects of the present invention are as follows: 1. By controlling the motor to work, driving the threaded rod to rotate, thereby driving the moving plate to move upward, driving the driving motor, the transmission rod, and the tension adjusting mechanism to move upward. When the tension adjusting mechanism moves upward, it will drive the spinning to move upward and slowly become taut. At this time, the spinning will squeeze the upper pressure-bearing shell, and the pressure-bearing shell will squeeze the piezoelectric element and synchronously drive the electrode to move towards the central axis of the main shaft. The piezoelectric element is subjected to mechanical pressure, generating charge separation and forming a voltage signal, thereby detecting the magnitude of the spinning tension, and solving the problem that the existing equipment cannot accurately detect the spinning tension and adjust the spinning tension.

[0015] 2. By opening the control valve, then the telescopic rod extends, driving the pushing piece to move to the right, thereby pushing the hydraulic oil inside the main liquid channel into the inside of the liquid distribution cavity. As the liquid enters the liquid distribution cavity, it will push the multiple push rods and arc-shaped pieces to move outward and squeeze the spring, causing the tension detector to move outward, thereby making this thread more taut, and the tension detected by the tension detector will also increase. When the tension reaches the preset value, the telescopic rod will stop extending. Similarly, when the detected tension is too large, the telescopic rod will shorten, reducing the tautness of the spinning, thereby reducing the tension, and thus can accurately adjust the tension of each spinning thread, and further ensuring the quality of the spinning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings forming a part of the specification depict the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application in a clear and understandable way.

[0017] The present disclosure can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 is a schematic view of the overall structure appearance of the present invention; Figure 2 is a schematic view of a half-section of the housing of the present invention; Figure 3 is a schematic view of the threaded rod structure of the present invention; Figure 4 is a schematic view of a half-section of the main shaft of the present invention; Figure 5 is a schematic view of a half-section of the liquid separation chamber of the present invention; Figure 6 is a schematic view of the structure of the tension detector of the present invention; Figure 7 is a schematic view of the structure of the parts of the tension detector of the present invention; Figure 8 is a schematic view of the wire connection when the spinning is pulled and stretched by the present invention.

[0018] Wherein: 1. housing; 2. control motor; 3. threaded rod; 4. Y-shaped rod; 5. moving plate; 6. tension pulley; 7. driving motor; 8. transmission rod; 9. middle pulley; 10. telescopic rod; 11. pushing piece; 12. sliding block; 13. sliding rod; 14. wire roller; 15. small pulley; 16. large pulley; 17. tension adjusting mechanism; 171. main shaft; 172. main liquid passage; 173. liquid separation chamber; 174. control valve; 175. push rod; 176. arc-shaped piece; 177. spring; 178. tension detector; 1781. electrical connection ring; 1782. electrode; 1783. piezoelectric element; 1784. pressure-bearing shell; 18. cross belt. Specific embodiments

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0020] Please refer to Figure 1-8The present application discloses a yarn pulling and stretching device for spinning, comprising a housing 1, wherein a control motor 2 is fixedly installed inside the housing 1, and an output shaft of the control motor 2 is fixedly connected to a threaded rod 3, and a Y-shaped rod 4 and a movable plate 5 are connected to the threaded surface of the threaded rod 3 through a thread, and the threads at the connection between the two have opposite rotation directions and different pitches, so as to ensure that the Y-shaped rod 4 and the movable plate 5 move in opposite directions and keep the cross belt 18 in a tensioned state at all times, and a tensioning pulley 6 is rotatably installed on the middle part of the Y-shaped rod 4, and a driving motor 7 is fixedly installed on the upper surface of the movable plate 5, and the output shaft of the driving motor 7 is fixedly connected to a transmission rod 8, and a middle pulley 9 is fixedly connected to the middle part of the curved surface of the transmission rod 8, and a sliding block 12 is rotatably installed on the right end of the transmission rod 8 and the right end of the Y-shaped rod 4; Two wire rollers 14, a small pulley 15 is fixedly connected to the middle of the front wire roller 14, and a large pulley 16 is fixedly connected to the middle of the rear wire roller 14. A cross belt 18 is connected between the small pulley 15, the large pulley 16, and the middle pulley 9. Its function is that the size of the large pulley 16 is larger than that of the middle pulley 9, and the size of the small pulley 15 is smaller than that of the middle pulley 9, so that the rotation speed of the front wire roller 14 is greater than the rotation speed of the tension adjustment mechanism 17, and the rotation speed of the tension adjustment mechanism 17 is greater than the rotation speed of the rear wire roller 14, so that the spinning is stretched; The tension adjustment mechanism 17 is fixedly connected to the right side of the transmission rod 8.

[0021] Among them, the transmission rod 8 is fixedly installed with a telescopic rod 10, and the telescopic end of the telescopic rod 10 is fixedly connected with a push piece 11; The housing 1 further includes a slide rod 13 , which is fixedly mounted inside the housing 1 . The slide rod 13 is slidably connected to the Y-shaped rod 4 and the movable plate 5 .

[0022] The tension adjustment mechanism 17 includes a main shaft 171, which has a main liquid channel 172 and multiple liquid separation chambers 173 formed inside. A control valve 174 is provided between the liquid separation chamber 173 and the main shaft 171. When the control valve 174 is in an open state, the main liquid channel 172 is connected to the control valve 174. Multiple push rods 175 are slidably connected to the liquid separation chamber 173. The outer ends of the push rods 175 are fixedly connected to arc-shaped pieces 176. A spring 177 is provided between the push rods 175 and the liquid separation chamber 173. Multiple tension detectors 178 are fixedly installed on the curved surface of the main shaft 171. Its function is that by opening the control valve 174, the telescopic rod 10 then extends, driving the pushing piece 11 to move to the right, thereby pushing the hydraulic oil inside the main liquid channel 172 into the inside of the liquid distribution cavity 173. As the liquid enters the inside of the liquid distribution cavity 173, it will push multiple push rods 175 and arc-shaped pieces 176 to move outward and squeeze the spring 177, causing the tension detector 178 to move outward, and further making this wire more taut. The tension detected by the tension detector 178 will also increase. When the tension reaches the preset value, the telescopic rod 10 will stop extending; similarly, when the detected tension is too large, the telescopic rod 10 will shorten, reducing the tightness of the spinning thread, and further reducing the tension, so that the tension of each spinning thread can be accurately adjusted, and thus the quality of the spinning thread can be guaranteed.

[0023] Among them, the tension detector 178 includes two electrical connection rings 1781. A plurality of electrodes 1782 are slidably connected between the two electrical connection rings 1781. Piezoelectric elements 1783 are fixedly installed on both the inner and outer sides of the electrode 1782. A pressure-bearing shell 1784 is fixedly installed on the outer side of the outer piezoelectric element 1783; Its function is that by controlling the motor 2 to work, driving the threaded rod 3 to rotate, thereby driving the moving plate 5 to move upward, thereby driving the driving motor 7, the transmission rod 8, and the tension adjustment mechanism 17 to move upward. The upward movement of the tension adjustment mechanism 17 will drive the spinning thread to move upward and slowly become taut. At this time, the spinning thread will squeeze the upper pressure-bearing shell 1784, and the pressure-bearing shell 1784 will squeeze the piezoelectric element 1783 and synchronously drive the electrode 1782 to move toward the central axis of the main shaft 171. The piezoelectric element 1783 is subjected to mechanical pressure and will generate charge separation to form a voltage signal, thereby detecting the magnitude of the tension of the spinning thread, thus solving the problem that the existing equipment cannot accurately detect the magnitude of the tension of the spinning thread and adjust the tension of the spinning thread.

[0024] Among them, both sliding blocks 12 are slidably connected to the housing 1. A plurality of annular grooves are opened in the right parts of the two wire guide rollers 14. Both wire guide rollers 14 are rotatably connected to the housing 1. Its function is that the spinning thread will squeeze the upper pressure-bearing shell 1784, and the pressure-bearing shell 1784 will squeeze the piezoelectric element 1783 and synchronously drive the electrode 1782 to move toward the central axis of the main shaft 171. During the process, the electrode 1782 will always be in contact with the electrical connection rings 1781 on both sides.

[0025] Among them, the main shaft 171 is fixedly connected to the transmission rod 8. The push rod 175 is slidably connected to the main shaft 171. Hydraulic oil is filled inside the main liquid channel 172 and a plurality of liquid distribution cavities 173. The two electrical connection rings 1781 are fixedly connected to the main shaft 171. The inner piezoelectric element 1783 is fixedly connected to the arc-shaped piece 176. The pressure-bearing shell 1784 is slidably connected to the electrical connection rings 1781 on both sides.

[0026] Among them, the pushing piece 11 is in interference fit with the main liquid channel 172. The pushing piece 11 is located at the left part of the main liquid channel 172. Its function is that when the telescopic rod 10 extends, it drives the pushing piece 11 to move to the right, thereby pushing the hydraulic oil inside the main liquid channel 172 into the inside of the liquid distribution cavity 173; when the telescopic rod 10 shortens, it drives the pushing piece 11 to move to the left, and the spring 177 pushes the push rod 175 to move towards the center, thereby squeezing the hydraulic oil inside the liquid distribution cavity 173 back into the main liquid channel 172.

[0027] Among them, the tension pulley 6 is in contact with the crossed belt 18. Its function is that through the setting of the crossed belt 18, the drive motor 7 works to drive the transmission rod 8 to rotate. The transmission rod 8 drives the middle pulley 9 and the tension adjusting mechanism 17 to rotate. The middle pulley 9 drives the small pulley 15 and the large pulley 16 to rotate in the opposite direction through the crossed belt 18, thereby realizing the traction and stretching of the spinning.

[0028] Working principle: A plurality of spun yarns that need to be stretched after cooling are sequentially placed on the rear guide roller 14, the main shaft 171, and the front guide roller 14, in a shape similar to the letter "W". Each spun yarn is located inside the annular groove of the two guide rollers 14 and on the curved surface of the tension detector 178. Control the motor 2 to work, drive the threaded rod 3 to rotate, thereby driving the moving plate 5 to move upward. At the same time, when the threaded rod 3 rotates, it drives the Y-shaped rod 4 and the tension pulley 6 to move downward, so that the crossed belt 18 is always in a taut state. When the moving plate 5 moves upward, it drives the drive motor 7, the transmission rod 8, and the tension adjusting mechanism 17 to move upward. When the tension adjusting mechanism 17 moves upward, it drives the spun yarn to move upward and slowly become taut. At this time, the spun yarn will squeeze the upper pressure-bearing shell 1784, and the pressure-bearing shell 1784 will squeeze the piezoelectric element 1783 and synchronously drive the electrode 1782 to move towards the central axis of the main shaft 171. During the process, the electrode 1782 will always be in contact with the electrical connection rings 1781 on both sides. When the piezoelectric element 1783 is subjected to mechanical pressure, charge separation will occur to form a voltage signal, thereby detecting the tension of the spun yarn. When the tension of the spun yarn reaches the target value, control the motor 2 to stop working, and the drive motor 7 works to drive the transmission rod 8 to rotate. The transmission rod 8 drives the middle pulley 9 and the tension adjusting mechanism 17 to rotate. The middle pulley 9 drives the small pulley 15 and the large pulley 16 to rotate in the opposite direction through the crossed belt 18, and then drives the two guide rollers 14 to rotate in the direction opposite to that of the tension adjusting mechanism 17. Since the size of the large pulley 16 is larger than that of the middle pulley 9, and the size of the small pulley 15 is smaller than that of the middle pulley 9, the rotation speed of the front guide roller 14 is greater than that of the tension adjusting mechanism 17, and the rotation speed of the tension adjusting mechanism 17 is greater than that of the rear guide roller 14, thereby stretching the "W"-shaped spun yarn between the two guide rollers 14 and the tension adjusting mechanism 17. During the process of spinning and stretching, if a certain filament in multiple filaments is less than the preset tension, at this time, the control valve 174 in the middle of this filament is opened, the telescopic rod 10 extends, driving the push plate 11 to move to the right, thereby pushing the hydraulic oil inside the main liquid channel 172 into the internal liquid distribution cavity 173 of this filament. As the liquid enters the internal liquid distribution cavity 173, it will push multiple push rods 175 and arc-shaped pieces 176 to move outward and compress the spring 177, causing the tension detector 178 to move outward, and further making this filament more taut. The tension detected by the tension detector 178 will also increase. When the tension reaches the preset value, the telescopic rod 10 will stop extending; similarly, when the detected tension is too large, the telescopic rod 10 will shorten, reducing the tightness of the filament, and thus reducing the tension.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A silk thread traction and stretching device for spinning, comprising a housing (1), characterized in that, A control motor (2) is fixedly installed inside the housing (1), the output shaft of the control motor (2) is fixedly connected to a threaded rod (3), the curved surface of the threaded rod (3) is threadedly connected to a Y-shaped rod (4) and a movable plate (5), a tensioning wheel (6) is rotatably installed in the middle of the Y-shaped rod (4), a driving motor (7) is fixedly installed on the upper surface of the movable plate (5), the output shaft of the driving motor (7) is fixedly connected to a transmission rod (8), the middle of the curved surface of the transmission rod (8) is fixedly connected to a middle pulley (9), and a sliding block (12) is rotatably installed on the right end of the transmission rod (8) and the right end of the Y-shaped rod (4); Two wire rollers (14), a small pulley (15) is fixedly connected to the middle of the front wire roller (14), a large pulley (16) is fixedly connected to the middle of the rear wire roller (14), and a cross belt (18) is connected between the small pulley (15), the large pulley (16), and the middle pulley (9); A tension adjustment mechanism (17), wherein the tension adjustment mechanism (17) is fixedly connected to the right side of the transmission rod (8).

2. The silk thread traction and stretching device for spinning according to claim 1, characterized in that, A telescopic rod (10) is fixedly installed inside the transmission rod (8), and a push piece (11) is fixedly connected to the telescopic end of the telescopic rod (10); It also includes a sliding rod (13), which is fixedly installed inside the housing (1), and the sliding rod (13) is slidably connected to the Y-shaped rod (4) and the movable plate (5).

3. A wire traction and stretching device for spinning according to claim 2, characterized in that The tension adjustment mechanism (17) includes a main shaft (171), wherein a main liquid channel (172) and a plurality of liquid separation chambers (173) are provided inside the main shaft (171), a control valve (174) is provided between the liquid separation chamber (173) and the main shaft (171), and when the control valve (174) is in an open state, the main liquid channel (172) is communicated with the control valve (174), a plurality of push rods (175) are slidably connected to the inside of the liquid separation chamber (173), an arc-shaped piece (176) is fixedly connected to the outer end of the push rod (175), a spring (177) is provided between the push rod (175) and the liquid separation chamber (173), and a plurality of tension detectors (178) are fixedly installed on the curved surface of the main shaft (171).

4. A silk thread traction and stretching device for spinning according to claim 3, characterized in that, The tension detector (178) includes two electrical connecting rings (1781), a plurality of electrodes (1782) are slidably connected between the two electrical connecting rings (1781), piezoelectric elements (1783) are fixedly installed on the inner and outer sides of the electrodes (1782), and a pressure-bearing shell (1784) is fixedly installed on the outer side of the piezoelectric element (1783).

5. A wire drawing and stretching device for spinning according to claim 4, characterized in that, The two sliding blocks (12) are both slidably connected to the housing (1), a plurality of annular grooves are provided on the right portions of the two wire rollers (14), and the two wire rollers (14) are both rotatably connected to the housing (1).

6. The wire drawing and stretching device for spinning according to claim 5, characterized in that The main shaft (171) is fixedly connected to the transmission rod (8), and the push rod (175) is slidably connected to the main shaft (171).

7. A wire traction and stretching device for spinning according to claim 6, characterized in that, The main liquid channel (172) and the plurality of liquid separation chambers (173) are both filled with hydraulic oil.

8. A silk thread traction and stretching device for spinning according to claim 7, characterized in that, The two electrical connection rings (1781) are fixedly connected to the main shaft (171), the inner piezoelectric element (1783) is fixedly connected to the arc-shaped piece (176), and the pressure-bearing shell (1784) is slidably connected to the electrical connection rings (1781) on both sides.

9. A silk thread traction and stretching device for spinning according to claim 8, characterized in that, The push piece (11) is in interference fit with the main liquid channel (172), and the push piece (11) is located in the left part of the main liquid channel (172).

10. A silk thread traction and stretching device for spinning according to claim 9, characterized in that, The tension pulley (6) abuts against the crossed belt (18).

Images