A spinning yarn pulling and stretching device

Abstract

The present application relates to the field of spinning and drawing technology, and discloses a spinning yarn drawing 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 threaded on the curved surface of the threaded rod, a tensioning wheel rotatably installed in the middle of the Y-shaped rod, and a drive motor fixedly installed on the upper surface of the movable plate. The present invention drives the spinning to move upward and slowly enters a taut state through the upward movement of the tension adjustment mechanism. 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 toward the central axis of the main shaft. The piezoelectric element is subjected to mechanical pressure, which will produce charge separation and form a voltage signal, thereby detecting the tension of the spinning, thereby solving the problem that the existing equipment cannot accurately detect the size of the spinning tension and adjust the spinning tension.

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;

[0005] 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;

[0006] The tension adjusting mechanism is fixedly connected to the right side of the transmission rod.

[0007] 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;

[0008] It also includes a sliding rod, which is fixedly installed inside the shell and is slidably connected to the Y-shaped rod and the movable plate.

[0009] Preferably, the tension adjustment mechanism includes a main shaft, a main liquid channel and a plurality of liquid separation chambers are opened inside the main shaft, a control valve is provided between the liquid separation chamber and the main shaft, and 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 to the inside of the liquid separation chamber, 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 separation chamber, and a plurality of tension detectors are fixedly installed on the curved surface of the main shaft. When the above structure is in operation, the control valve is opened, and then the telescopic rod is extended, driving the push piece to the right Move, thereby pushing the hydraulic oil inside the main liquid channel into the inside of the liquid separation chamber. With the entry of the liquid inside the liquid separation chamber, it will push multiple push rods and arc-shaped pieces to move outward and squeeze the spring, causing the tension detector to move outward, thereby making the line tighter, 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 it is detected that the tension is too large, the telescopic rod will shorten, reducing the tightness of the spinning, and then reducing the tension, so that the tension of each spinning can be accurately adjusted, thereby ensuring the quality of spinning.

[0010] Preferably, the tension detector includes two electrical connecting rings, and a plurality of electrodes are slidably connected between the two electrical connecting rings. Piezoelectric elements are fixedly installed on the inner and outer sides of the electrodes, and a pressure-bearing shell is fixedly installed on the outer side of the outer piezoelectric element. When the above structure is in operation, by controlling the operation of the motor, the threaded rod is driven to rotate, thereby driving the movable 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 movable plate moves upward, it will drive the driving motor, the transmission rod, and the tension adjustment mechanism to move upward. The upward movement of the tension adjustment mechanism will drive the spinning to move upward and slowly be in a taut state. 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 toward the central axis of the main shaft. The piezoelectric element is subjected to mechanical pressure, which will produce charge separation and form a voltage signal, thereby detecting the tension of the spinning, thereby solving the problem that the existing equipment cannot accurately detect the spinning tension and adjust the spinning tension.

[0011] Preferably, the two sliding blocks are both slidably connected to the shell, a plurality of annular grooves are provided on the right parts of the two wire rollers, and the two wire rollers are rotatably connected to the shell. If the above structure is able to work, 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 toward the central axis of the main shaft. During the process, the electrode will always be in contact with the electrical rings on both sides.

[0012] Preferably, the main shaft is fixedly connected to the transmission rod, and the push rod is slidably connected to the main shaft.

[0013] Preferably, the main liquid channel and the plurality of liquid separation chambers are filled with hydraulic oil.

[0014] Preferably, the two electrical connecting rings are fixedly connected to the main shaft, the inner piezoelectric element is fixedly connected to the arc-shaped piece, and the pressure-bearing shell is slidably connected to the electrical connecting rings on both sides.

[0015] Preferably, the push piece is interference fit with the main liquid channel, and the push piece is located at the left part of the main liquid channel. If the above structure is in operation, the telescopic rod will extend, driving the push piece to move to the right, thereby pushing the hydraulic oil inside the main liquid channel into the interior of the liquid separation chamber; the telescopic rod will shorten, driving the push piece to move to the left, and the spring will push the push rod to move toward the center, thereby squeezing the hydraulic oil inside the liquid separation chamber back into the main liquid channel.

[0016] Preferably, the tensioning pulley is in contact with the cross belt. If the above structure is in operation, the motor can be driven to work through the setting of the cross belt, driving the transmission rod to rotate. The transmission rod will drive the middle pulley and the tension adjustment mechanism to rotate. The middle pulley drives the small pulley and the large pulley to rotate in the opposite direction through the cross belt, thereby realizing the traction and stretching of spinning.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention controls the operation of the motor to drive the threaded rod to rotate, thereby driving the movable plate to move upward, thereby driving the drive motor, the transmission rod, and the tension adjustment mechanism to move upward. The upward movement of the tension adjustment mechanism will drive the spinning to move upward and slowly be in a taut state. 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 toward the central axis of the main shaft. The piezoelectric element is subjected to mechanical pressure, which will produce charge separation and form a voltage signal, thereby detecting the size of the spinning tension, thereby solving the problem that the existing equipment cannot accurately detect the size of the spinning tension and adjust the spinning tension.

[0019] 2. The present invention opens the control valve, and then the telescopic rod extends, driving the push plate to move to the right, thereby pushing the hydraulic oil inside the main liquid channel into the interior of the liquid separation chamber. As the liquid inside the liquid separation chamber enters, it will push multiple push rods and arc-shaped plates to move outward and squeeze the spring, causing the tension detector to move outward, thereby making the line tighter, 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 it is detected that the tension is too large, the telescopic rod will shorten, reducing the tightness of the spinning, and then reducing the tension, so that the tension of each spinning can be accurately adjusted, thereby ensuring the quality of spinning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application in a clear and understandable manner.

[0021] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 A half-section schematic diagram of the housing of the present invention;

[0024] Figure 3 This is a schematic diagram of the threaded rod structure of the present invention;

[0025] Figure 4 A half-section schematic diagram of the main shaft of the present invention;

[0026] Figure 5 This is a half-section schematic diagram of the liquid separation chamber of the present invention;

[0027] Figure 6 This is a schematic structural diagram of the tension detector of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the tension detector parts of the present invention;

[0029] Figure 8 This is a schematic diagram of the line drawing during spinning and stretching of the present invention.

[0030] Among them: 1. Shell; 2. Control motor; 3. Threaded rod; 4. Y-shaped rod; 5. Moving plate; 6. Tensioning pulley; 7. Drive motor; 8. Transmission rod; 9. Middle pulley; 10. Telescopic rod; 11. Push piece; 12. Sliding block; 13. Sliding rod; 14. Wire roller; 15. Small pulley; 16. Large pulley; 17. Tension adjustment mechanism; 171. Main shaft; 172. Main liquid channel; 173. Liquid separation chamber; 174. Control valve; 175. Push rod; 176. Arc piece; 177. Spring; 178. Tension detector; 1781. Electrical connecting ring; 1782. Electrode; 1783. Piezoelectric element; 1784. Pressure shell; 18. Cross belt. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] See also Figure 1-8 The 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;

[0033] 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;

[0034] The tension adjustment mechanism 17 is fixedly connected to the right side of the transmission rod 8.

[0035] 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;

[0036] 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 .

[0037] 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.

[0038] Its function is to open the control valve 174, and then the telescopic rod 10 extends, driving the push piece 11 to move to the right, thereby pushing the hydraulic oil inside the main liquid channel 172 into the inside of the liquid separation chamber 173. As the liquid inside the liquid separation chamber 173 enters, it will push multiple push rods 175 and arc-shaped pieces 176 to move outward, and squeeze the spring 177, so that the tension detector 178 moves outward, thereby making the line tighter, and 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 tension is detected to be too large, the telescopic rod 10 will shorten, reducing the tightness of the spinning, and then reducing the tension, so that the tension of each spinning can be accurately adjusted, thereby ensuring the quality of spinning.

[0039] The tension detector 178 includes two electrical connecting rings 1781 , with multiple electrodes 1782 slidably connected between the two electrical connecting rings 1781 . Piezoelectric elements 1783 are fixedly mounted on the inner and outer sides of the electrodes 1782 , and a pressure-bearing shell 1784 is fixedly mounted on the outer side of the outer piezoelectric element 1783 .

[0040] Its function is to control the operation of the motor 2 to drive the threaded rod 3 to rotate, thereby driving the movable plate 5 to move upward, thereby driving the drive 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 to move upward and slowly be in a taut state. At this time, the spinning 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, which will produce charge separation and form a voltage signal, thereby detecting the size of the spinning tension, thereby solving the problem that the existing equipment cannot accurately detect the size of the spinning tension and adjust the spinning tension.

[0041] Among them, the two sliding blocks 12 are both slidably connected to the shell 1, and the right parts of the two wire rollers 14 are provided with multiple annular grooves. The two wire rollers 14 are both rotatably connected to the shell 1. Their function is that spinning 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 rings 1781 on both sides.

[0042] Among them, the main shaft 171 is fixedly connected to the transmission rod 8, the push rod 175 is slidingly connected to the main shaft 171, the main liquid channel 172 and the multiple liquid separation chambers 173 are filled with hydraulic oil, the two electrical connecting 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 shell 1784 is slidingly connected to the electrical connecting rings 1781 on both sides.

[0043] Among them, the push piece 11 is interference fit with the main liquid channel 172, and the push piece 11 is located on the left part of the main liquid channel 172. Its function is that the telescopic rod 10 extends, driving the push piece 11 to move to the right, thereby pushing the hydraulic oil inside the main liquid channel 172 into the interior of the liquid separation chamber 173; the telescopic rod 10 will shorten, driving the push piece 11 to move to the left, and the spring 177 pushes the push rod 175 to move toward the center, thereby squeezing the hydraulic oil inside the liquid separation chamber 173 back into the main liquid channel 172.

[0044] Among them, the tensioning pulley 6 is in contact with the cross belt 18. Its function is to drive the motor 7 to work through the setting of the cross belt 18, drive the transmission rod 8 to rotate, and the transmission rod 8 will drive the middle pulley 9 and the tension adjustment 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 cross belt 18, thereby realizing the traction and stretching of spinning.

[0045] Working principle:

[0046] The multiple spinning strands that need to be stretched after cooling are placed on the rear guide roller 14, the main shaft 171, and the front guide roller 14 in sequence, in a shape similar to the letter "W". Each spinning strand is located inside the annular groove of the two guide rollers 14 and on the curved surface of the tension detector 178;

[0047] The control motor 2 works to drive the threaded rod 3 to rotate, thereby driving the movable plate 5 to move upward. At the same time, the rotation of the threaded rod 3 will drive the Y-shaped rod 4 and the tensioning wheel 6 to move downward, so that the cross belt 18 is always in a taut state. When the movable plate 5 moves upward, it will drive the drive 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 to move upward and slowly be in a taut state. At this time, the spinning 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 rings 1781 on both sides. The piezoelectric element 1783 is subjected to mechanical pressure, which will produce charge separation and form a voltage signal, thereby detecting the tension of the spinning;

[0048] When the spinning tension reaches the target size, the control motor 2 stops working and the drive motor 7 starts working, driving the transmission rod 8 to rotate. The transmission rod 8 drives the middle pulley 9 and the tension adjustment 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 cross belt 18, thereby driving the two wire rollers 14 to rotate in the opposite direction to the tension adjustment 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 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, thereby stretching the "W"-shaped spinning between the two wire rollers 14 and the tension adjustment mechanism 17;

[0049] During the spinning stretching process, if the tension of one of the multiple groups of spinning is less than the preset tension, at this time, the control valve 174 in the middle of the line is opened, the telescopic rod 10 extends, and the push piece 11 moves to the right, thereby pushing the hydraulic oil inside the main liquid channel 172 into the middle of the liquid separation chamber 173 of the line. As the liquid inside the liquid separation chamber 173 enters, it will push multiple push rods 175 and arc-shaped pieces 176 to move outward, and squeeze the spring 177, so that the tension detector 178 moves outward, thereby making the line tighter, and 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 tension is detected to be too large, the telescopic rod 10 will shorten, reducing the tightness of the spinning, and thus reducing the tension.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A spinning yarn pulling and stretching device, 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 regulating mechanism (17), the tension regulating mechanism (17) being fixedly connected to the right side of the transmission rod (8), the tension regulating mechanism (17) comprising a main shaft (171), the main shaft (171) being provided with a main liquid channel (172) and a plurality of liquid separation chambers (173), a control valve (174) being provided between the liquid separation chamber (173) and the main shaft (171), the control valve (174) being in an open state, the main liquid channel (172) being communicated with the control valve (174), the liquid separation chamber (173) being slidably connected with a plurality of push rods (175), the outer ends of the push rods (175) being fixedly connected with an arc-shaped piece (176), a spring (177) being provided between the push rods (175) and the liquid separation chamber (173), and a plurality of tension detectors (178) being fixedly installed on the curved surface of the main shaft (171); 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).

2. The spinning yarn pulling and stretching device according to claim 1, 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).

3. The spinning yarn pulling and stretching device according to claim 2, 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).

4. The spinning yarn pulling and stretching device according to claim 3, 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).

5. The spinning yarn pulling and stretching device according to claim 4, characterized in that: The main liquid channel (172) and the plurality of liquid separation chambers (173) are both filled with hydraulic oil.

6. The spinning yarn pulling and stretching device according to claim 5, characterized in that: The two electrical connecting 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 connecting rings (1781) on both sides.

7. The spinning yarn pulling and stretching device according to claim 6, characterized in that: The push piece (11) is interference-fitted with the main liquid channel (172), and the push piece (11) is located on the left side of the main liquid channel (172).

8. The spinning yarn pulling and stretching device according to claim 7, characterized in that: The tensioning wheel (6) abuts against the cross belt (18).

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