A siro-spun single yarn breaking device

Abstract

The present invention relates to the field of spinning equipment, and specifically discloses a siro-spun single yarn breaking device, which includes a device base. On one side of the device base, two inlet nozzles and inlet nozzle fixing seats are symmetrically arranged left and right. A first inlet channel is arranged in the inlet nozzle. One end of the inlet nozzle and the inlet nozzle fixing seat are fixedly connected, and the other end of the inlet nozzle fixing seat is fixedly installed on the device base. A second inlet channel is arranged on the inlet nozzle fixing group. The second inlet channel is communicated with the first inlet channel and is not concentric. The opening end on one side of the second inlet channel is a rounded corner, and first springs are respectively arranged on both sides of the rounded corner. One end of the first spring is connected to an arc-shaped pressing plate. A cutting device is arranged in the device base, and the cutting device is connected to the arc-shaped pressing plate through a connecting line. The single yarn cutting device can be controlled by the deformation degree of the arc-shaped pressing plate, so that when one single yarn is loose or broken, the other single yarn can be cut, solving the problem that the single yarn breaking device cannot be triggered when the single yarn is loose in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of spinning equipment, and particularly to a siro spinning single yarn breaking device. Background Art

[0002] Siro spinning is a spinning method that spins yarns with a structure similar to ply yarns on a traditional ring spinning frame. Two rovings with a certain spacing are fed into the spinning frame. After drafting, the two single yarn strands are output by the front roller, and due to the transfer of twist, a small amount of twist is carried on the single yarn strands. After being spliced, they are further twisted into yarns similar to ply yarns and wound on bobbins. Siro spinning is also called combined twisting spinning, and is called A and B yarns in China.

[0003] The most common problem with siro spinning is the problem of yarn breakage. Since siro spinning is a process of combining and twisting two rovings, when one roving breaks, the other yarn will continue to operate, and the yarn produced in this way obviously cannot meet the quality requirements. Therefore, a single yarn breaking device is needed to cut the other roving or stop the operation of the siro spinning equipment when a roving breaks.

[0004] The cotton / wool general siro spinning breaking device with the patent number CN2002200015921 introduces a breaking device. When one yarn breaks and the "Z" - shaped steel needle frame in contact with it falls due to its own weight, the position where it contacts the lower cross bar, a twist - blocking channel is formed between the lower cross bar of the "Z" - shaped steel needle frame and the fixed steel needle, so as to break the other yarn. In the actual use process, it is found that such a breaking device is only triggered when the roving breaks, and when the roving is slack and the two single yarns are plied and there is a situation where no twist can be added, the breaking device will not be triggered. Summary of the Invention

[0005] The present invention is to solve the technical problems mentioned in the above background art, and the following technical solutions are proposed:

[0006] A siro spinning single yarn breaking device includes a device base. On one side of the device base, two inlet nozzles and inlet nozzle fixing seats are symmetrically arranged left and right. A first inlet channel is arranged in the inlet nozzle. One end of the inlet nozzle and the inlet nozzle fixing seat are fixedly connected, and the other end of the inlet nozzle fixing seat is fixedly installed on the device base. A second inlet channel is arranged on the inlet nozzle fixing group. The second inlet channel is communicated with the first inlet channel. The second inlet channel and the first inlet channel are not concentric. The opening end on one side of the second inlet channel is a fillet. First springs are respectively arranged on both sides of the fillet. One end of each first spring is fixedly installed on the inlet nozzle fixing seat, and the other end of each first spring is connected with an arc - shaped pressing plate. The size and shape of the arc - shaped pressing plate correspond to the size and shape of the fillet.

[0007] On the left and right sides of the device base, third inlet channels are symmetrically arranged. The radius of the third inlet channel is the same as that of the second inlet channel, and the third inlet channel is concentric with the second inlet channel. On the left and right sides of the device base, first cavities are symmetrically arranged. The first cavity is of an annular structure and is concentric with the third inlet channel. A cutting device is arranged in the first cavity. The cutting device includes: a torsion spring, a cutting device connection disk, a front rocker arm, a rear rocker arm, and a cutting blade. One end of the torsion spring is fixedly connected to one side of the first cavity, and the torsion spring is fixedly connected to one side of the cutting device connection disk. On the other side of the cutting device connection disk, a round hole and a second chute are provided. A first fixed block is slidably connected in the round hole. One end of the first fixed block is fixedly connected to one side of the rear rocker arm. A first chute is provided on the rear rocker arm. A fixed rod is arranged on the inner wall of the first cavity, and the fixed rod is located in the first chute. One end of the rear rocker arm is rotatably connected to one end of the front rocker arm. A second slider is arranged on one side of the front rocker arm. A second chute is provided on the cutting device connection disk, and the second slider is located in the second chute. One end of the front rocker arm is fixedly connected to a cutting blade. A first through hole is provided on one side of the first cavity, and the first through hole is communicated with the third inlet channel. The position and size of the first through hole correspond to the position and size of the cutting blade. A second annular groove is provided at one end of the first cavity. A third slider is fixedly connected to one side of one end of the rear rocker arm, and the third slider is located in the second annular groove. A second through hole is provided at the bottom of the second annular groove. The second through hole is a waist-shaped hole, and a rocker is arranged in the second through hole. One end of the rocker is fixedly connected to the third slider, and the other end of the rocker passes through the second through hole and communicates with the outside.

[0008] On one side of the second annular groove, a second cavity is provided. A second spring is provided at the bottom of the second cavity. One end of the second spring is fixedly connected to the bottom of the second cavity, and the other end of the second spring is connected to a latch fixing plate. The other end of the latch fixing plate is connected to a latch. A third through hole is provided at the top of the second cavity. One end of the latch passes through the third through hole and is located in the second annular groove. A notch is provided on the side of the latch, and the size of the notch corresponds to the size of the third slider.

[0009] A first channel is arranged in the device base, and the first channel communicates with two second annular grooves. A second channel is arranged in the inlet nozzle fixing seat. One end of the second channel is communicated with the first channel, and the other end of the second channel opens at the bottom of the arc-shaped pressing plate. The arc-shaped pressing plate is provided with a connecting wire. One end of the connecting wire is fixedly connected to the bottom of the arc-shaped pressing plate, and the other end of the connecting wire is connected to one end of the latch.

[0010] Preferably, a triangular notch is provided on the outer periphery of one end of the first inlet channel.

[0011] Preferably, a rubber pad is provided at one end of the third inlet channel.

[0012] Preferably, the cutting blade is inclined.

[0013] Preferably, a third cavity is provided in the middle of the device base. The third cavity is communicated with the first channel. A terminal post is provided in the third cavity. Two wiring plates are sleeved on the outer periphery of the terminal post. A bearing hole is provided in the middle of the wiring plate. The bearing hole is fixedly connected to the terminal post. Winding posts are respectively provided on the left and right sides of the wiring plate. The connecting wire is divided into a front connecting wire and a rear connecting wire. One end of the front connecting wire is connected to the arc-shaped pressing plate. The other end of the front connecting wire is connected to the left winding post. One end of the rear connecting wire is connected to the right winding post. The other end of the rear connecting wire is connected to the plug.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention is provided with an inlet nozzle. An inlet nozzle fixing seat is provided at the bottom of the inlet nozzle. A fillet is provided on the inlet nozzle fixing seat. An arc-shaped pressing plate is provided on the fillet. A first spring is provided at the bottom of the arc-shaped pressing plate. When a single yarn enters through the inlet nozzle and passes through the inlet nozzle fixing seat, it will press the arc-shaped pressing plate, causing the first spring to deform under pressure, making the arc-shaped pressing plate move downward. Then, the connecting wire is connected through the arc-shaped pressing plate, and the connecting wire controls the cutting device to cut the single yarn. The single yarn cutting device can be controlled by the deformation degree of the arc-shaped pressing plate. When one single yarn is loose or broken, the other single yarn can be cut, solving the problem in the prior art that the single yarn breaking device cannot be triggered when the single yarn is loose.

[0016] 3. By setting the cutting blade to be inclined, even if the cutting blade becomes rusty and dull and cannot cut the single yarn, the single yarn can also move and rub against the cutting blade for cutting, avoiding the problem that the single yarn cannot be broken.

[0017] 4. By providing a terminal post on the device base, the wiring plate is rotatably connected to the outer periphery of the terminal post, and winding posts are symmetrically provided on the left and right sides of the wiring plate. The connecting wire is connected to the winding post. The tightness of the connecting wire can be set through the winding post, avoiding the problem that the breaking device cannot be triggered due to the slack of the connecting wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a sectional view of the present invention;

[0020] Figure 3 isFigure 2 Enlarged view of location A in the figure;

[0021] Figure 4 It is Figure 2 Enlarged view of location B in the figure;

[0022] Figure 5 It is Figure 2 Enlarged view of location C in the figure;

[0023] Figure 6 Schematic structural diagram of the cutting device in the present invention;

[0024] Figure 7 It is Figure 6 Enlarged view of the circled area in the figure;

[0025] Figure 8 Schematic structural diagram of the present invention in Embodiment 2;

[0026] Figure 9 Schematic structural diagram of the terminal in Embodiment 2.

[0027] In the figure: 1. Device base; 1-1. Third inlet channel; 1-2. First cavity; 1-21. First through hole; 1-22. Second annular groove; 1-23. Second through hole; 1-24. Second cavity; 1-25. Second spring; 1-26. Plug fixing plate; 1-27. Plug; 1-28. Third through hole; 1-29. Notch; 1-3. First channel; 1-4. Third cavity; 1-41. Terminal; 1-42. Wiring plate; 1-43. Bearing hole; 1-44. Winding post; 2. Inlet nozzle; 2-1. First inlet channel; 3. Inlet nozzle fixing seat; 3-1. Second inlet channel; 3-2. Rounded corner; 3-3. Second channel; 4. First spring; 5. Arc-shaped pressing plate; 6. Cutting device; 6-1. Torque spring; 6-2. Cutting device connection plate; 6-21. Round hole; 6-22. Fixed rod; 6-23. Second chute; 6-3. Front rocker arm; 6-31. Second slider; 6-4. Rear rocker arm; 6-41. First fixed block; 6-42. First chute; 6-43. Third slider; 6-5. Cutting blade; 7. Rocker; 8. Connecting wire; 8-1. Front connecting wire; 8-2. Rear connecting wire; 9. Triangular notch; 10. Rubber pad. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that, herein, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The connection manners described by the terms "fixed connection" and "fixed setting" include but are not limited to "welding", "riveting", "adhesion", and "threaded connection". The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0030] The orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0031] In the present invention, the bearing hole mentioned refers to a bearing provided on the inner wall of a circular hole, and the outer wall of the rotating shaft is fixedly connected to the inner wall of the bearing to achieve the rotational connection between the rotating shaft and the circular hole.

[0032] Embodiment 1

[0033] Refer to Figure 1-7 , a siro-spun single yarn breaking device, comprising a device base 1, on one side of the device base 1, two inlet nozzles 2 and inlet nozzle fixing seats 3 are symmetrically arranged left and right. A first inlet channel 2-1 is arranged in the inlet nozzle 2. One end of the inlet nozzle 2 and the inlet nozzle fixing seat 3 are fixedly connected. The other end of the inlet nozzle fixing seat 3 is fixedly installed on the device base 1. A second inlet channel 3-1 is arranged on the inlet nozzle fixing group 3. The second inlet channel 3-1 communicates with the first inlet channel 2-1. The second inlet channel 3-1 and the first inlet channel 2-1 are not concentric. The open end on one side of the second inlet channel 3-1 is a rounded corner 3-2. First springs 4 are respectively arranged on both sides of the rounded corner 3-2. One end of the first spring 4 is fixedly installed on the inlet nozzle fixing seat 3. The other end of the first spring 4 is connected with an arc-shaped pressing plate 5. The size and shape of the arc-shaped pressing plate 5 correspond to the size and shape of the rounded corner 3-2.

[0034] On the left and right sides of the device base 1, third inlet channels 1-1 are symmetrically arranged. The radius of the third inlet channel 1-1 is the same as that of the second inlet channel 3-1. The third inlet channel 1-1 is concentric with the second inlet channel 3-1. On the left and right sides of the device base 1, first cavities 1-2 are symmetrically arranged. The first cavity 1-2 is of a circular ring structure. The first cavity 1-2 is concentric with the third inlet channel 1-1. A cutting device 6 is arranged in the first cavity 1-2. The cutting device 6 includes: a torsion spring 6-1, a cutting device connection disk 6-2, a front rocker arm 6-3, a rear rocker arm 6-4, and a cutting blade 6-5. One end of the torsion spring 6 is fixedly connected to one side of the first cavity 1-2. The torsion spring 6 is fixedly connected to one side of the cutting device connection disk 6-2. On the other side of the cutting device connection disk 6-2, a round hole 6-21 and a second chute 6-23 are arranged. A first fixing block 6-41 is slidably connected in the round hole 6-21. One end of the first fixing block 6-41 is fixedly connected to one side of the rear rocker arm 6-4. A first chute 6-42 is arranged on the rear rocker arm 6-4. A fixed rod 6-22 is arranged on the inner wall of the first cavity 1-21. The fixed rod 6-22 is located in the first chute 6-42. One end of the rear rocker arm 6-4 is rotatably connected to one end of the front rocker arm 6-3. A second slider 6-31 is arranged on one side of the front rocker arm 6-3. A second chute 6-23 is arranged on the cutting device connection disk 6-2. The second slider 6-31 is located in the second chute 6-23. One end of the front rocker arm 6-3 is fixedly connected to a cutting blade 6-5. A first through hole 1-21 is arranged on one side of the first cavity 1-2. The first through hole 1-21 is communicated with the third inlet channel 1-1. The position and size of the first through hole 1-21 correspond to the position and size of the cutting blade 6-5. A second annular groove 1-22 is arranged at one end of the first cavity 1-2. A third slider 6-43 is fixedly connected to the side of one end of the rear rocker arm 6-4. The third slider 6-43 is located in the second annular groove 1-22. A second through hole 1-23 is arranged at the bottom of the second annular groove 1-22. The second through hole 1-23 is a waist-shaped hole. A rocker 7 is arranged in the second through hole 1-23. One end of the rocker 7 is fixedly connected to the third slider 6-43. The other end of the rocker 7 passes through the second through hole 1-23 and communicates with the outside.

[0035] On one side of the second annular groove 1-22, there is a second cavity 1-24. At the bottom of the second cavity 1-24, there is a second spring 1-25. One end of the second spring 1-25 is fixedly connected to the bottom of the second cavity 1-24. The other end of the second spring 1-25 is connected to a latch fixing plate 1-26. The other end of the latch fixing plate 1-26 is connected to a latch 1-27. At the top of the second cavity 1-24, there is a third through hole 1-28. One end of the latch 1-27 passes through the third through hole 1-28 and is located in the second annular groove 1-22. There is a notch 1-29 on the side of the latch 1-27. The size of the notch 1-29 corresponds to the size of the third slider 6-43.

[0036] In the device base 1, there is a first channel 1-3. The first channel 1-3 communicates with two second annular grooves 1-22. In the inlet nozzle fixing seat 3, there is a second channel 3-3. One end of the second channel 3-3 communicates with the first channel 1-3. The other end of the second channel 3-3 opens at the bottom of the arc-shaped pressing plate 5. The arc-shaped pressing plate 5 is provided with a connecting wire 8. One end of the connecting wire 8 is fixedly connected to the bottom of the arc-shaped pressing plate 5. The other end of the connecting wire 8 is connected to one end of the latch 1-27.

[0037] Preferably, a triangular notch 9 is provided on the outer periphery of one end of the first inlet channel 2-1.

[0038] Preferably, a rubber pad 10 is provided at one end of the third inlet channel 1-1.

[0039] Preferably, the cutting blade 6-5 is inclined.

[0040] During actual operation, the single yarn passes through the first inlet channel 2-1 in the inlet nozzle 2, enters through the second inlet channel 3-1 on the inlet nozzle fixing seat 3, and finally passes out through the third inlet channel 1-1 on the device base 1. When the single yarn passes through the second inlet channel 3-1, because the second inlet channel 3-1 is not concentric with the first inlet channel 2-1, the single yarn will press the arc-shaped pressing plate 5 located in the second inlet channel 3-1. The arc-shaped pressing plate 5 will press the first spring 4 to deform. The bottom of the arc-shaped pressing plate 5 is connected to the connecting wire 8. The other end of the connecting wire 8 is connected to the latch 1-27;

[0041] When one end of the single yarn breaks, the pressure on the arc-shaped pressing plate 5 disappears. The first spring 4 rebounds upward, pushing the arc-shaped pressing plate 5 to move upward. The connecting line 8 connected to the arc-shaped pressing plate 5 moves towards one end of the arc-shaped pressing plate 5. The connecting line 8 pulls the pin 1-27 to move. When the pin 1-27 moves, the pin 1-27 drives the second spring 1-25 to stretch. The notch 1-29 on the pin 1-27 fits with the third slider 6-43 on the rear swing arm 6-4. The third slider 6-43 is not blocked by the pin 1-27. At this time, the cutting device connecting disk 6-2 rotates under the action of the torsion spring 6-1. The cutting device connecting disk 6-2 drives the rear swing arm 6-4 to rotate. The rear swing arm 6-4 moves along the direction of the fixed rod 6-22. The front swing arm 6-3 moves along the direction of the second chute 6-23 under the action of the rear swing arm 6-4, causing the cutting blade 6-5 to move until it moves into the second wire inlet channel 3-1 and cuts the single yarn.

[0042] Embodiment 2

[0043] Referring to Figure 8-9 , the difference between this embodiment and Embodiment 1 is that a third cavity 1-4 is provided in the middle of the device base 1. The third cavity 1-4 is communicated with the first channel 1-3. A wiring post 1-41 is provided in the third cavity 1-4. Two wiring disks 1-42 are sleeved on the outer periphery of the wiring post 1-41. A bearing hole 1-43 is provided in the middle of the wiring disk 1-42. The bearing hole 1-43 is fixedly connected to the wiring post 1-42. Winding posts 1-44 are respectively provided on the left and right sides of the wiring disk 1-42. The connecting line 8 is divided into a front connecting line 8-1 and a rear connecting line 8-2. One end of the front connecting line 8-1 is connected to the arc-shaped pressing plate 5, and the other end of the front connecting line 8-1 is connected to the left winding post 1-44. One end of the rear connecting line 8-2 is connected to the right winding post 1-44, and the other end of the rear connecting line 8-2 is connected to the pin 1-27.

Claims

1. A siro-spun single yarn breaking device, comprising a device base (1), characterized in that, On one side of the device base (1), two cable inlets (2) and cable inlet fixing seats (3) are symmetrically arranged left and right. A first cable inlet channel (2-1) is provided in the cable inlet (2). One end of the cable inlet (2) is fixedly connected to the cable inlet fixing seat (3). The other end of the cable inlet fixing seat (3) is fixedly installed on the device base (1). A second cable inlet channel (3-1) is provided on the cable inlet fixing seat (3). The second cable inlet channel (3-1) is communicated with the first cable inlet channel (2-1). The second cable inlet channel (3-1) is not concentric with the first cable inlet channel (2-1). An opening end on one side of the second cable inlet channel (3-1) is a rounded corner (3-2). First springs (4) are respectively arranged on both sides of the rounded corner (3-2). One end of the first spring (4) is fixedly installed on the cable inlet fixing seat (3). The other end of the first spring (4) is connected to an arc-shaped pressing plate (5). The size and shape of the arc-shaped pressing plate (5) correspond to the size and shape of the rounded corner (3-2); On both the left and right sides of the device base (1), third wire inlet channels (1-1) are symmetrically arranged. The radius of the third wire inlet channel (1-1) is the same as that of the second wire inlet channel (3-1), and the third wire inlet channel (1-1) is concentric with the second wire inlet channel (3-1). On both the left and right sides of the device base (1), first cavities (1-2) are symmetrically arranged. The first cavity (1-2) is of an annular structure and is concentric with the third wire inlet channel (1-1). A cutting device (6) is arranged in the first cavity (1-2). The cutting device (6) includes: a torsion spring (6-1), a cutting device connection disk (6-2), a front rocker arm (6-3), a rear rocker arm (6-4), and a cutting blade (6-5). One end of the torsion spring (6-1) is fixedly connected to one side of the first cavity (1-2), and the torsion spring (6-1) is fixedly connected to one side of the cutting device connection disk (6-2). On the other side of the cutting device connection disk (6-2), a round hole (6-21) and a second chute (6-23) are provided. A first fixed block (6-41) is slidably connected in the round hole (6-21). One end of the first fixed block (6-41) is fixedly connected to one side of the rear rocker arm (6-4). A first chute (6-42) is provided on the rear rocker arm (6-4). A fixed rod (6-22) is arranged on the inner wall of the first cavity (1-2), and the fixed rod (6-22) is located in the first chute (6-42). One end of the rear rocker arm (6-4) is rotatably connected to one end of the front rocker arm (6-3). A second slider (6-31) is provided on one side of the front rocker arm (6-3). A second chute (6-23) is provided on the cutting device connection disk (6-2), and the second slider (6-31) is located in the second chute (6-23). One end of the front rocker arm (6-3) is fixedly connected to a cutting blade (6-5). A first through hole (1-21) is provided on one side of the first cavity (1-2), and the first through hole (1-21) is communicated with the third wire inlet channel (1-1). The position and size of the first through hole (1-21) correspond to the position and size of the cutting blade (6-5). A second annular groove (1-22) is provided at one end of the first cavity (1-2). A third slider (6-43) is fixedly connected to the side of one end of the rear rocker arm (6-4), and the third slider (6-43) is located in the second annular groove (1-22). A second through hole (1-23) is provided at the bottom of the second annular groove (1-22). The second through hole (1-23) is a waist-shaped hole, and a rocker (7) is arranged in the second through hole (1-23). One end of the rocker (7) is fixedly connected to the third slider (6-43), and the other end of the rocker (7) passes through the second through hole (1-23) and is communicated with the outside; On one side of the second annular groove (1-22), there is a second cavity (1-24). At the bottom of the second cavity (1-24), there is a second spring (1-25). One end of the second spring (1-25) is fixedly connected to the bottom of the second cavity (1-24). The other end of the second spring (1-25) is connected to a latch fixing plate (1-26). The other end of the latch fixing plate (1-26) is connected to a latch (1-27). At the top of the second cavity (1-24), there is a third through hole (1-28). One end of the latch (1-27) passes through the third through hole (1-28) and is located in the second annular groove (1-22). A notch (1-29) is provided on the side of the latch (1-27). The size of the notch (1-29) corresponds to the size of the third slider (6-43). A first channel (1-3) is provided in the device base (1). The first channel (1-3) communicates with two second annular grooves (1-22). A second channel (3-3) is provided in the incoming line nozzle fixing seat (3). One end of the second channel (3-3) communicates with the first channel (1-3). The other end of the second channel (3-3) opens at the bottom of the arc-shaped pressing plate (5). The arc-shaped pressing plate (5) is provided with a connecting wire (8). One end of the connecting wire (8) is fixedly connected to the bottom of the arc-shaped pressing plate (5). The other end of the connecting wire (8) is connected to one end of the latch (1-27).

2. The siro-spun single yarn breaking device according to claim 1, characterized in that, A triangular notch (9) is provided on the outer periphery of one end of the first incoming line channel (2-1).

3. The sirospun single yarn breaking device according to claim 2, wherein A rubber pad (10) is provided at one end of the third incoming line channel (1-1).

4. The siro-spun single yarn breaking device according to claim 3, characterized in that, The cutting blade (6-5) is inclined.

5. The siro-spun single yarn breaking device according to claim 4, characterized in that, A third cavity (1-4) is provided in the middle of the device base (1). The third cavity (1-4) communicates with the first channel (1-3). A terminal post (1-41) is provided in the third cavity (1-4). Two wiring plates (1-42) are sleeved on the outer periphery of the terminal post (1-41). A bearing hole (1-43) is provided in the middle of the wiring plate (1-42). The bearing hole (1-43) is fixedly connected to the terminal post (1-41). Winding posts (1-44) are respectively provided on the left and right sides of the wiring plate (1-42). The connecting wire (8) is divided into a front connecting wire (8-1) and a rear connecting wire (8-2). One end of the front connecting wire (8-1) is connected to the arc-shaped pressing plate (5). The other end of the front connecting wire (8-1) is connected to the left winding post (1-44). One end of the rear connecting wire (8-2) is connected to the right winding post (1-44). The other end of the rear connecting wire (8-2) is connected to the latch (1-27).

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