A device for sucking and cutting tail yarn

Abstract

The present invention relates to the technical field of textile machinery, and more specifically to a tail yarn suction and cutting device. In the existing fully automatic winding machine, the multi-position and multi-directional conveying of the yarn tube adopts a manipulator with a complex structure and high cost, which occupies a large space and has a complex control system. A tail yarn suction and cutting device, a Y-direction conveying mechanism, a Z-direction conveying mechanism and an X-direction conveying mechanism are arranged on a trolley welding frame, a large-end suction pipe seat is sleeved on a large-end suction pipe fixing plate, and the large-end suction pipe seat is located below the Z-direction conveying mechanism; a large ceramic blade assembly for cutting the tail yarn is arranged below the large-end suction pipe seat, a large-end suction pipe seat 2 is arranged below the large ceramic blade assembly, an elbow is sleeved on the large-end suction pipe seat, and the large ceramic blade assembly closes and opens the negative pressure damper of the large-end suction pipe seat and the large-end suction pipe seat 2. The yarn tube is sent to a designated position for tail yarn shearing, and then the tail yarn is sucked and transferred, and then transferred to a designated position to enter the next process, with a high degree of automation and a small space.

Description

Technical Field

[0001] The invention relates to the technical field of textile machinery, and more particularly to a tail yarn suction and cutting device. Background Art

[0002] With the development of automation, labor costs are getting higher and higher. In the textile industry, the workload of manually arranging bobbins is large and the task is heavy. In addition, the environment of the winding workshop is poor, and it is difficult for textile companies to recruit workers. The labor cost is relatively high and the work efficiency is low. It is no longer suitable for modern production. In the existing fully automatic winding machine, the multi-position and multi-directional conveying of bobbins uses a complex and expensive manipulator, which occupies a large space and has a complex control system. Summary of the invention

[0003] The purpose of the present invention is to provide a tail yarn suction and cutting device which can carry out three-way conveying and cut off the tail yarn at the same time in view of the shortcomings of the prior art.

[0004] A tail yarn suction and cutting device comprises a trolley welding frame, the trolley welding frame is provided with a Y-direction conveying mechanism that moves left and right, a Z-direction conveying mechanism that moves up and down, and an X-direction conveying mechanism that moves forward and backward, a large-end suction pipe fixing plate is fixed on the trolley welding frame, a large-end suction pipe seat is sleeved on the large-end suction pipe fixing plate, and the large-end suction pipe seat is located below the Z-direction conveying mechanism; a large ceramic blade assembly for cutting the tail yarn is provided below the large-end suction pipe seat, a large-end suction pipe seat 2 is provided below the large ceramic blade assembly, an elbow is sleeved on the large-end suction pipe seat 2, the other open end of the elbow is sleeved into a straight-through piece, and the large ceramic blade assembly closes and opens and closes the negative pressure damper opening of the large-end suction pipe seat and the large-end suction pipe seat 2. The yarn tube entering from the outer end can be sent to a designated position for tail yarn shearing, the tail yarn is sucked after shearing, and the yarn tube after the tail yarn shearing is transferred again, and transferred to a designated position to enter the next process, with a high degree of automation and a small space.

[0005] As a further improvement and supplement to the above solution, the present invention also includes the following additional technical features:

[0006] The Y-direction conveying mechanism includes a Y-direction lateral movement fixed bracket, two first slide rails and a matching first slider are parallelly installed and fixed on the outside of the first Y-direction lateral movement fixed bracket, a Y-direction lateral movement cylinder bracket is fixed on the first slider, a first cylinder body is fixed on the first Y-direction lateral movement fixed bracket, a piston rod is fixed on the Y-direction lateral movement cylinder bracket, a first finger cylinder is fixed on the Y-direction lateral movement cylinder bracket, a diffuse reflection sensor is provided below the first finger cylinder body, a second short semicircular guide plate and a first short semicircular guide plate are fixed at both ends of the first finger cylinder; a yarn tube guide column driven by the second cylinder is provided below the second short semicircular guide plate and the first short semicircular guide plate. The cylinder is driven and grabbed, the beat is fast, and the control system is simple.

[0007] The up-and-down Z-direction conveying mechanism includes a first X-direction transverse fixed bracket, two second slide rails and matching sliders are parallelly mounted and fixed on the first X-direction transverse fixed bracket, a first Z-direction transverse cylinder bracket is fixed on the slider, a third cylinder body is fixed on the first X-direction transverse fixed bracket, and a piston rod is fixed on the first Z-direction transverse cylinder bracket; two third slide rails and matching sliders are parallelly mounted and fixed on the first Z-direction transverse cylinder bracket, a second Z-direction transverse cylinder bracket is fixed on the slider, a fourth cylinder body is mounted and fixed on the first Z-direction transverse cylinder bracket, and a piston rod is fixed in the second Z-direction transverse cylinder bracket; a second finger cylinder is mounted on the second Z-direction transverse cylinder bracket, and a single-finger gripper is mounted on the second finger cylinder. The cylinder is driven and grasped, with a fast beat and a simple control system.

[0008] The X-direction conveying mechanism comprises a first X-direction transverse fixed bracket, two fourth slide rails and matching slide blocks are parallelly mounted and fixed on the first X-direction transverse fixed bracket, and the X-direction transverse cylinder bracket is fixed on the slide block; the fifth cylinder body is fixed on the first X-direction transverse fixed bracket, the piston rod is fixed on the X-direction transverse cylinder bracket, the first finger cylinder is fixed in the X-direction transverse cylinder bracket, and the bobbin clamp is fixed on the first finger cylinder. The cylinder is driven and grasped, the beat is fast, and the control system is simple.

[0009] The large ceramic blade assembly includes a thread suction scissor base, a large scissor cylinder rotating shaft passes through the tail end of the sixth cylinder body and is fixed in the large scissor cylinder seat, a fisheye joint is provided on the sixth cylinder, a first large ceramic blade is fixed on the fisheye joint, a large end of the thread suction scissor rotating shaft passes through the first large ceramic blade and the second large ceramic blade in sequence at the bottom and is fixed in the thread suction scissor base, and the first large ceramic blade can make a partial circular motion along the thread suction scissor rotating shaft. The structure is simple and reasonable, ensuring that the tail yarn can be cut.

[0010] A thread suction scissor upper seat is arranged below the thread suction scissor base, which effectively protects the first large ceramic blade and the second large ceramic blade.

[0011] The elbow and the straight piece are made of PVC, which has low cost.

[0012] The large-head suction pipe seat, the wire suction scissor base, the wire suction scissor upper seat and the entrance end of the elbow are coaxial, ensuring that the large ceramic blade assembly can close and open the air door.

[0013] The end of the yarn tube guide column is conical, which can effectively guide the yarn tube.

[0014] The second short semicircular guide piece and the first short semicircular guide piece have an arc section with a larger outer portion and a smaller inner portion at the inner hole at the upper end, and a tapered section with a larger size and a smaller size at the lower end, so as to effectively guide the bobbin.

[0015] The following beneficial effects can be achieved by using the present invention:

[0016] 1. Simple structure, correct action, convenient control, and can realize the conveying of bobbins in three directions in a small space;

[0017] 2. Use the principle that the yarn is light and easily sucked by negative pressure to suck out the tail yarn with negative pressure;

[0018] 3. The large ceramic blade set can realize the scissors function and also serve as a damper, which simplifies the structure and reduces the number of damper components.

[0019] 4. Multiple steps can be performed simultaneously, reducing the waiting time and greatly improving work efficiency.

[0020] 5. After the tail yarn of the bobbin is cut, the tail yarn will not be entangled in the next process, which improves the work efficiency of the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a perspective view of the present invention.

[0022] Figure 2 It is a first structural schematic diagram of the present invention.

[0023] Figure 3 It is a second structural schematic diagram of the present invention.

[0024] Figure 4 It is a third structural schematic diagram of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the large ceramic blade set 3 in the present invention.

[0026] Figure 6 The working principle of the present invention is Figure 1 .

[0027] Figure 7 The working principle of the present invention is Figure 2 .

[0028] Figure 8 The working principle of the present invention is Figure 3 .

[0029] Fig. 9 The working principle of the present invention is Figure 4 .

[0030] Fig.10 The working principle of the present invention is Figure 5 .

[0031] Fig.11 The working principle of the present invention is Figure 6 .

[0032] Fig.12The working principle of the present invention is Figure 7 .

[0033] Fig.13 The working principle of the present invention is Figure 8 . DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] like Figure 1-13 As shown, the present invention is a device for sucking and cutting tail yarn.

[0036] The tail yarn suction and cutting device described in this embodiment includes a trolley welding frame 13, on which a Y-direction conveying mechanism 1 that moves left and right, a Z-direction conveying mechanism 6 that moves up and down, and an X-direction conveying mechanism 5 that moves forward and backward are provided. The Y-direction conveying mechanism 1 is located to the left of the Z-direction conveying mechanism 6, and the X-direction conveying mechanism 5 is located in front of the Z-direction conveying mechanism 6. The big-end suction pipe fixing plate 7 is fixed on the trolley welding frame 13, on the same side as the X-direction conveying mechanism 5, and one side extends to the inside of the trolley welding frame 13, and the big-end suction pipe fixing plate 7 is provided with a waist-shaped long groove, which can be adjusted in position, and the big-end suction pipe seat 4 is flanged at the bottom and sleeved on the big-end suction pipe fixing plate 7, and the big-end suction pipe seat 4 is located below the Z-direction conveying mechanism 6. A large ceramic blade assembly 3 for cutting off the tail yarn is provided below the big-end straw seat 4, and a big-end straw seat 8 is provided below the large ceramic blade assembly 3. The flange end of the big-end straw seat 8 faces upward, and the axial hole end is inserted into the elbow 9. The other open end of the elbow 9 is inserted into the straight-through piece 10, and the straight-through piece 10 is connected to the negative pressure system to suck the tail yarn. The large ceramic blade assembly 3 can close and open the openings of the big-end straw seat 4 and the big-end straw seat 8, that is, close and open the negative pressure damper.

[0037] Furthermore, the Y-direction conveying mechanism 1 includes a second Y-direction lateral movement fixed bracket 106 provided on the trolley welding frame 13, a first Y-direction lateral movement fixed bracket 105 is installed on the second Y-direction lateral movement fixed bracket 106, two first slide rails 102 and matching first sliders 101 are installed and fixed in parallel on the outside of the first Y-direction lateral movement fixed bracket 105, a Y-direction lateral movement cylinder bracket 104 is fixed on the first slider 101, a first cylinder 107 cylinder body is fixed on the first Y-direction lateral movement fixed bracket 105, a piston rod is fixed on the Y-direction lateral movement cylinder bracket 104, the first cylinder 107 can drive the Y-direction lateral movement cylinder bracket 104 to slide horizontally along the direction of the first slide rail 102, and the first cylinder 107 is located in the cavity between the first Y-direction lateral movement fixed bracket 105 and the second Y-direction lateral movement fixed bracket 106. The first finger cylinder 103 is fixed on the Y-direction traverse cylinder bracket 104. A yarn drop sensor bracket 14 is installed below the cylinder body of the first finger cylinder 103. A diffuse reflection sensor 15 is installed on the yarn drop sensor bracket 14. The second short semicircular guide piece 12 and the first short semicircular guide piece 11 are fixed at both ends of the first finger cylinder 103. A yarn tube guide column 108 driven by the second cylinder 109 is provided below the second short semicircular guide piece 12 and the first short semicircular guide piece 11. One end of the yarn tube guide column cylinder bracket 110 is fixed on the trolley welding frame 13, and the second cylinder 109 is fixed on the other end. The yarn tube guide column 108 is fixed on the piston rod end of the second cylinder 109. The yarn tube guide column cylinder bracket 110 is provided with a long groove, which can adjust the position of the second cylinder 109 and the yarn tube guide column 108.

[0038] Furthermore, the trolley welding frame 13 is provided with a Z-direction grabbing fixed bracket 601, the second X-direction lateral movement fixed bracket 505 is fixed on the Z-direction grabbing fixed bracket 601, and the first X-direction lateral movement fixed bracket 504 is fixed on the second X-direction lateral movement fixed bracket 505. The two second slide rails 602 and the matching slider 101 are parallelly mounted and fixed on the first X-direction lateral movement fixed bracket 504, the first Z-direction lateral movement cylinder bracket 605 is fixed on the slider 101, the cylinder body of the third cylinder 603 is fixed on the first X-direction lateral movement fixed bracket 504, the piston rod is fixed on the first Z-direction lateral movement cylinder bracket 605, the third cylinder 603 can drive the first Z-direction lateral movement cylinder bracket 605 to slide up and down along the second slide rail 602, and the third cylinder 603 is located in the cavity between the first X-direction lateral movement fixed bracket 504 and the second X-direction lateral movement fixed bracket 505. The two third slide rails 606 and the matching slider 101 are installed and fixed in parallel on the first Z-direction transverse movement cylinder bracket 605, the second Z-direction transverse movement cylinder bracket 607 is fixed on the slider 101, the cylinder body of the fourth cylinder 604 is installed and fixed on the first Z-direction transverse movement cylinder bracket 605, and the piston rod is fixed in the second Z-direction transverse movement cylinder bracket 607. The fourth cylinder 604 can drive the second Z-direction transverse movement cylinder bracket 607 to slide up and down along the third slide rail 606; the second Z-direction transverse movement cylinder bracket 607 is equipped with a second finger cylinder 6081, and the second finger cylinder 6081 is equipped with a single-finger gripper 6082.

[0039] Furthermore, the trolley welding frame 13 is provided with an X-direction grabbing fixed bracket 507, the second X-direction lateral movement fixed bracket 505 is fixed on the X-direction grabbing fixed bracket 507, the first X-direction lateral movement fixed bracket 504 is fixed on the second X-direction lateral movement fixed bracket 505, and the two fourth slide rails 502 and the matching slider 101 are parallelly installed and fixed on the first X-direction lateral movement fixed bracket 504. The X-direction lateral movement cylinder bracket 506 is fixed on the slider 101, the cylinder body of the fifth cylinder 508 is fixed on the first X-direction lateral movement fixed bracket 504, the piston rod is fixed on the X-direction lateral movement cylinder bracket 506, the fifth cylinder 508 can drive the X-direction lateral movement cylinder bracket 506 to slide horizontally along the direction of the fourth slide rail 502, and the fifth cylinder 508 is located in the cavity between the first X-direction lateral movement fixed bracket 504 and the second X-direction lateral movement fixed bracket 505. The first finger cylinder 103 is fixed in the X-direction traverse cylinder bracket 506 , and the bobbin clamp 503 is fixed on the first finger cylinder 103 .

[0040] Furthermore, the large ceramic blade assembly 3 includes a wire suction scissors base 303, which is fixed on the big head straw seat 4, a large scissors cylinder seat 309 is fixed on the trolley welding frame 13, a large scissors cylinder rotating shaft 308 passes through the tail end of the sixth cylinder 307 and is fixed in the large scissors cylinder seat 309, a fisheye joint 306 is provided on the sixth cylinder 307, a first large ceramic blade 302 is fixed on the fisheye joint 306, a large end of the wire suction scissors rotating shaft 304 passes through the first large ceramic blade 302 and the second large ceramic blade 301 in sequence at the bottom and is fixed in the wire suction scissors base 303, the second large ceramic blade 302 is embedded and installed in the wire suction scissors base 303 and does not move, the first large ceramic blade 302 can make a local circular motion along the wire suction scissors rotating shaft 304, open and close to perform the tail yarn shearing action, and at the same time close and open the openings of the big head straw seat 4 and the big head straw seat 8, that is, close and open the negative pressure damper.

[0041] Furthermore, a thread suction scissors upper seat 305 is provided below the thread suction scissors base 303, and the two are connected and fixed by bolts, and the first large ceramic blade 302 and the second large ceramic blade 301 are inside it.

[0042] Furthermore, the elbow 9 and the straight piece 10 are made of PVC.

[0043] Furthermore, the large-end straw seat 4, the wire suction scissors base 303, the wire suction scissors upper seat 305 and the entrance end of the elbow 9 are coaxial.

[0044] Furthermore, the end of the yarn tube guide column 108 is conical.

[0045] Furthermore, the second short semicircular guide piece 12 and the first short semicircular guide piece 11 have an inner hole at the upper end with an arc section that is larger outside and smaller inside, and a tapered section that is larger to smaller at the lower end.

[0046] When the tail yarn suction and cutting device is used, in the initial working state, the first cylinder 107 is in a piston rod retracted state, the first finger cylinder 103 is closed, the second cylinder 109 is in a piston rod extended state, and the yarn tube guide column 108 extends into the Y-direction traverse cylinder bracket 104. The piston rods of the third cylinder 603 and the fourth cylinder 604 are in a retracted state, the second finger cylinder 6081 is in an open state, the piston rod of the fifth cylinder 508 is retracted, the first finger cylinder 103 is opened, the piston rod of the sixth cylinder 307 is extended, the first large ceramic blade 302 and the second large ceramic blade 301 are in a closed state, and the negative pressure damper is closed. Figure 6 .

[0047] When the first bobbin 2 enters the first short semicircular guide plate 12 and the second short semicircular guide plate 11, the diffuse reflection sensor 15 senses that the bobbin 2 is in place, the second cylinder 109 is actuated, and the bobbin guide column 108 withdraws from the Y-direction lateral cylinder bracket 104. Figure 7 .

[0048] The first cylinder 107 is actuated, the piston rod is extended to the position, and the first bobbin 2 is pushed to the bottom of the second finger cylinder 6081. Figure 8 .

[0049] The fourth cylinder 604 moves, driving the second finger cylinder 6081 to move downward to the position, the second finger cylinder 6081 moves, clamps the head of the first bobbin 2, and the first finger cylinder 103 opens. Fig. 9 .

[0050] After the first cylinder 107 is reset, the first finger cylinder 103 and the second cylinder 109 are reset at the same time, notifying the control system that the second bobbin 2 can enter this process. The second bobbin 2 is in place and waits for the next instruction. The third cylinder 603 is activated to drive the first bobbin 2 downward, and the large end of the first bobbin 2 enters the large end suction tube seat 4. At the same time, the sixth cylinder 307 is activated, the piston rod is retracted, the first large ceramic blade 302 and the second large ceramic blade 301 are opened, and the excess tail yarn is sucked into the negative pressure air duct. The sixth cylinder 307 is activated 2-3 times continuously to ensure that the tail yarn entering the negative pressure air duct is cut cleanly. Fig.10 .

[0051] The third cylinder 603 is reset, the sixth cylinder 307 is reset, the negative pressure damper is closed, the fifth cylinder 508 is actuated, driving the first finger cylinder 103 to be in place, the first finger cylinder 103 is actuated, clamping the first bobbin 2, as shown in FIG. Fig.11 .

[0052] The second finger cylinder 6081 is reset, the fourth cylinder 604 is reset, the fifth cylinder 508 is reset, the first cylinder 107 is actuated, the piston rod is extended to the position, and the second bobbin 2 is pushed to the bottom of the second finger cylinder 6081. The fourth cylinder 604 is actuated, driving the second finger cylinder 6081 to move downward to the position, the second finger cylinder 6081 is actuated, clamping the head of the second bobbin 2, and the first finger cylinder 103 is opened. Fig.12 .

[0053] The first finger cylinder 103 is reset, and the first yarn tube 2 is released. The first yarn tube 2 falls freely and enters the next process. After the first cylinder 107 is reset, the first finger cylinder 103 and the second cylinder 109 are reset at the same time, notifying the control system that the third yarn tube 3 can enter this process. The third yarn tube 3 is in place and waits for the next instruction. The third cylinder 603 is actuated to drive the second yarn tube 2 downward, and the large end of the second yarn tube 2 enters the large head suction tube seat 4. At the same time, the sixth cylinder 307 is actuated, the piston rod is retracted, the first large ceramic blade 302 and the second large ceramic blade 301 are opened, and the excess tail yarn enters the negative pressure air duct. The sixth cylinder 307 is actuated 2-3 times continuously to ensure that the tail yarn entering the negative pressure air duct is cut cleanly. Fig.13 .

[0054] The first bobbin 2 completes one working cycle, and the second bobbin 2 completes half of its working cycle.

[0055] The above are preferred embodiments of the present invention, which do not limit the protection scope of the present invention. Any modifications and improvements made by those skilled in the art based on the design ideas of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A tail yarn suction and cutting device, comprising a trolley welding frame (13), characterized in that: The trolley welding frame (13) is provided with a Y-direction conveying mechanism (1) that moves left and right, a Z-direction conveying mechanism (6) that moves up and down, and an X-direction conveying mechanism (5) that moves forward and backward. The big-end suction pipe fixing plate (7) is fixed on the trolley welding frame (13). The big-end suction pipe seat (4) is sleeved on the big-end suction pipe fixing plate (7). The big-end suction pipe seat (4) is located below the Z-direction conveying mechanism (6). A large ceramic blade assembly (3) for cutting off the tail yarn is provided below the big-end suction pipe seat (4). A second big-end suction pipe seat (8) is provided below the large ceramic blade assembly (3). An elbow (9) is sleeved on the second big-end suction pipe seat (8). The other open end of the elbow (9) is sleeved into a straight-through piece (10). The large ceramic blade assembly (3) closes and opens and closes the negative pressure damper openings of the big-end suction pipe seat (4) and the second big-end suction pipe seat (8). The Y-direction conveying mechanism (1) comprises a first Y-direction transverse fixed bracket (105), two first slide rails (102) and a slider (101) are parallelly mounted and fixed on the outside of the first Y-direction transverse fixed bracket (105), a Y-direction transverse cylinder bracket (104) is fixed on the slider (101), a cylinder body of a first cylinder (107) is fixed on the first Y-direction transverse fixed bracket (105), a piston rod is fixed on the Y-direction transverse cylinder bracket (104), a first finger cylinder (103) is fixed on the Y-direction transverse cylinder bracket (104), a diffuse reflection sensor (15) is provided below the first finger cylinder (103), a second short semicircular guide plate (12) and a first short semicircular guide plate (11) are fixed at two ends of the first finger cylinder (103); a yarn tube guide column (108) driven by a second cylinder (109) is provided below the second short semicircular guide plate (12) and the first short semicircular guide plate (11); The up-and-down moving Z-direction conveying mechanism (6) comprises a first X-direction transverse moving fixed bracket (504), two second slide rails (602) and a slider (101) are parallelly mounted and fixed on the first X-direction transverse moving fixed bracket (504), a first Z-direction transverse moving cylinder bracket (605) is fixed on the slider (101), a third cylinder (603) is fixed on the first X-direction transverse moving fixed bracket (504), and a piston rod is fixed on the first Z-direction transverse moving cylinder bracket (605); two third slide rails (606) and a slider (101) are parallelly mounted and fixed on the first X-direction transverse moving fixed bracket (504), a first Z-direction transverse moving cylinder bracket (605) is fixed on the slider (101), a third cylinder (603) is fixed on the first X-direction transverse moving fixed bracket (504), and a piston rod is fixed on the first Z-direction transverse moving cylinder bracket (605); The block (101) is installed and fixed in parallel on the first Z-direction lateral movement cylinder bracket (605), the second Z-direction lateral movement cylinder bracket (607) is fixed on the slider (101), the cylinder body of the fourth cylinder (604) is installed and fixed on the first Z-direction lateral movement cylinder bracket (605), and the piston rod is fixed in the second Z-direction lateral movement cylinder bracket (607); the second finger cylinder (6081) is installed on the second Z-direction lateral movement cylinder bracket (607), and the single-finger gripper (6082) is installed on the second finger cylinder (6081); The X-direction conveying mechanism (5) comprises a first X-direction transverse fixed bracket (504), two fourth slide rails (502) and a slider (101) are parallelly mounted and fixed on the first X-direction transverse fixed bracket (504), and an X-direction transverse cylinder bracket (506) is fixed on the slider (101); a cylinder body of a fifth cylinder (508) is fixed on the first X-direction transverse fixed bracket (504), a piston rod is fixed on the X-direction transverse cylinder bracket (506), a first finger cylinder (103) is fixed in the X-direction transverse cylinder bracket (506), and a bobbin clamp (503) is fixed on the first finger cylinder (103); The large ceramic blade assembly (3) comprises a wire suction scissors base (303), a large scissors cylinder rotating shaft (308) passes through the rear end of the cylinder body of the sixth cylinder (307) and is fixed in the large scissors cylinder seat (309), the sixth cylinder (307) is provided with a fisheye joint (306), the first large ceramic blade (302) is fixed on the fisheye joint (306), the large end of the wire suction scissors rotating shaft (304) passes through the first large ceramic blade (302) and the second large ceramic blade (301) in sequence at the bottom and is fixed in the wire suction scissors base (303), and the first large ceramic blade (302) can perform partial circular motion along the wire suction scissors rotating shaft (304); A thread suction scissors upper seat (305) is provided below the thread suction scissors base (303).

2. The tail yarn suction and cutting device according to claim 1, characterized in that: The elbow (9) and the straight piece (10) are made of PVC.

3. The tail yarn suction and cutting device according to claim 1, characterized in that: The large-end suction pipe seat (4), the wire suction scissors base (303), the wire suction scissors upper seat (305) and the entrance end of the elbow (9) are coaxial.

4. The tail yarn suction and cutting device according to claim 1, characterized in that: The end of the yarn tube guide column (108) is conical.

5. The tail yarn suction and cutting device according to claim 1, characterized in that: The second short semicircular guide piece (12) and the first short semicircular guide piece (11) have an inner hole at the upper end with an arc section that is larger outside and smaller inside, and a tapered section that is larger to smaller at the lower end.

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