A bobbin thread surplus taking mechanism

Abstract

The utility model discloses a take bobbin surplus line mechanism, including the first take surplus line wheel and second take surplus line wheel who can open and close to each other, have the first connecting rod and second connecting rod with cross connection, the first take surplus line wheel rotation is installed on the first connecting rod upper end, and the second take surplus line wheel rotation is installed on the second connecting rod upper end, and the first connecting rod middle part is connected with the second connecting rod middle part through the first pivot rotation, and the first pivot is installed on the first elevating seat, the lower extreme of first connecting rod is rotatably installed with third connecting rod, and the lower extreme of second connecting rod is rotatably installed with fourth connecting rod, and the end of third connecting rod is connected with the end of fourth connecting rod through the second pivot rotation, and the second pivot is installed on the second elevating seat, and be equipped with first line clamp cylinder between first elevating seat and second elevating seat. Take bobbin surplus line mechanism can stretch to bobbin positioning shaft place and carry out surplus line operation, avoid the defect that bobbin needs to place separately when taking surplus line, improve the bobbin changing efficiency of industrial sewing machine.

Description

Technical Field

[0001] This utility model belongs to the field of industrial sewing machines, specifically a bobbin thread taking mechanism for an automatic bobbin winding and changing device. Background Technology

[0002] Patent No. 202123068316.9 discloses an automatic bobbin winding and changing mechanism, including a mounting base plate. The mounting base plate is equipped with a winding and threading control device, a thread hooking device, an automatic bobbin changing device, and a bobbin excess thread removal device. The winding and threading control device winds thread onto the bobbin and automatically threads the end onto the bobbin sleeve. The thread hooking device automatically passes the thread end through the first thread guide hole on the bobbin sleeve. The automatic bobbin changing device removes the bobbin from the sewing machine and replaces it with the wound bobbin. The bobbin excess thread removal device removes excess thread from the removed bobbin to facilitate the next winding step.

[0003] The patent disclosure has certain flaws. After the bobbin thread removal device removes excess thread from the bobbin, the bobbin moves to the first mounting rod. Then, the bobbin needs to move to the second telescopic shaft of the winding and threading control device for winding and threading. After completion, it needs to return to the first mounting rod. The bobbin needs to adjust its working position back and forth, performing reciprocating movements step by step. Because the bobbin movement is time-consuming, it reduces the efficiency of the entire bobbin changing and winding cycle. Summary of the Invention

[0004] This invention addresses the aforementioned technical problems by providing a bobbin thread retrieving mechanism that extends to the bobbin positioning shaft to retrieve excess thread, thus avoiding the need for separate bobbin placement during thread retrieval and improving the bobbin changing efficiency of industrial sewing machines.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a bobbin-retrieving excess thread mechanism, including a first excess thread wheel and a second excess thread wheel that can be opened and closed relative to each other, and a first connecting rod and a second connecting rod that are cross-connected; the first excess thread wheel is rotatably mounted on the upper end of the first connecting rod, the second excess thread wheel is rotatably mounted on the upper end of the second connecting rod, the middle part of the first connecting rod and the middle part of the second connecting rod are rotatably connected through a first rotating shaft, the first rotating shaft is mounted on a first lifting seat; a third connecting rod is rotatably mounted on the lower end of the first connecting rod, a fourth connecting rod is rotatably mounted on the lower end of the second connecting rod, the end of the third connecting rod and the end of the fourth connecting rod are rotatably connected through a second rotating shaft, the second rotating shaft is mounted on a second lifting seat; a first thread-clamping cylinder is provided between the first lifting seat and the second lifting seat.

[0006] The first lifting seat is slidably mounted on the mounting base plate via the first guide rod; the second lifting seat is slidably mounted below the first lifting seat via the second guide rod.

[0007] The first and second lifting seats mentioned above are slidably mounted on the mounting base plate via the first guide rod.

[0008] The aforementioned second lifting seat is fixed with an air suction pipe, and the air suction port of the air suction pipe is located on one side of the first and second surplus reels.

[0009] The first wire clamping cylinder is fixedly installed on the first lifting seat, and the drive rod of the first wire clamping cylinder is connected to the second lifting seat; the mounting base plate is provided with the first lifting cylinder, and the drive rod of the first lifting cylinder is connected to the second lifting seat.

[0010] The first remaining wire pulley mentioned above is connected to a remaining wire motor via a remaining wire drive assembly.

[0011] The aforementioned residual wire drive assembly includes a first driving pulley, a first driven pulley, and a first synchronous belt. The drive shaft of the residual wire motor is connected to the first driving pulley, the first residual wire pulley is rotatably connected to the first driven pulley, and the first synchronous belt is sleeved on the first driving pulley and the second driven pulley.

[0012] The aforementioned first lifting seat is equipped with a push rod mounting bracket, which has a push rod for pushing the bobbin to move. The push rod is connected to a first drive cylinder.

[0013] To optimize the above technical solution, the present invention also includes the following improved technical solutions.

[0014] Compared with the prior art, the bobbin thread extraction mechanism of this utility model has the advantages of simple structure and convenient installation, which improve the efficiency of bobbin thread extraction and facilitate subsequent winding. The first thread clamping cylinder drives the second lifting seat to move up and down relative to the first lifting seat, thereby driving the first and second thread extraction wheels to open and close relative to each other. At the same time, it can move closer to or away from the bobbin positioning shaft, and can extract the excess thread from the bottom bobbin on the bobbin positioning shaft. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0016] Figure 2 This is a front view of this embodiment.

[0017] Figure 3 This is a three-dimensional structural diagram of the mechanism for retrieving the bobbin core.

[0018] Figure 4 yes Figure 3 Exploded view of the structure.

[0019] Figure 5 This is a three-dimensional structural diagram of the winding drive mechanism.

[0020] Figure 6 yes Figure 5 Exploded view of the structure. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] Figures 1 to 6 The diagram shown is a structural schematic of this utility model.

[0023] The reference numerals in the attached drawings are as follows: mounting base 1, shuttle compartment 2, bobbin positioning shaft 3, mounting groove 3a, push rod mounting bracket 4, first lifting seat 5, first spool of excess thread 6, second spool of excess thread 7, spool of excess thread motor 8, suction pipe 9, first thread clamping cylinder 10, first guide rod 11, second lifting seat 12, second guide rod 13, first connecting rod 14, second connecting rod 15, first rotating shaft 16, third connecting rod 17, fourth connecting rod 18, second rotating shaft 19, first driving wheel 20, first driven wheel 21, first synchronous belt 22, first lifting cylinder 23. Push rod; 24. First drive cylinder; 25. Winding drive shaft; 26. Ejection cylinder; 27. Winding motor; 28. Hairpin; 29. ​​Hairpin positioning hole; 29a. Hairpin sleeve; 30. Elastic rod; 31. Protrusion; 31a. Positioning shaft mounting seat; 32. Ejection connecting seat; 33. Second drive wheel; 34. Second driven wheel; 35. Second synchronous belt; 36. Shuttle changing drive shaft; 37. Key shaft sleeve; 38. First connecting arm; 38a. Second connecting arm; 38b. Shuttle changing control motor; 39. Axial shuttle changing cylinder; 40. First mounting plate; 41. Second mounting plate; 42.

[0024] like Figure 1 and Figure 2 As shown, this utility model discloses an automatic bobbin winding and shuttle changing device, including a mounting base plate 1. The mounting base plate 1 is equipped with an automatic shuttle changing mechanism, a bobbin thread removal mechanism, and a winding drive mechanism. The mounting base plate 1 has a bobbin positioning shaft 3 for placing the bobbin 29 and bobbin sleeve 30 during thread removal and winding. The bobbin thread removal mechanism is located on one side of the winding positioning shaft. The automatic shuttle changing mechanism removes the bottom bobbin from the sewing machine's shuttle compartment 2 and moves it to the bobbin positioning shaft 3. It also removes the bottom bobbin with thread wound on the bobbin positioning shaft 3 beforehand and moves it into the sewing machine's shuttle compartment 2 for operation. The bobbin thread removal mechanism removes any remaining thread from the removed bottom bobbin to facilitate the next winding step. The winding drive mechanism winds thread onto the empty bobbin 29 on the bobbin positioning shaft 3.

[0025] like Figure 3 and Figure 4As shown, the bobbin thread retrieving mechanism includes a first retrieving wheel 6 and a second retrieving wheel 7 that can open and close relative to each other. The mechanism has a first connecting rod 14 and a second connecting rod 15 that are cross-connected. The first retrieving wheel 6 is rotatably mounted on the upper end of the first connecting rod 14, and the second retrieving wheel 7 is rotatably mounted on the upper end of the second connecting rod 15. The middle portions of the first connecting rod 14 and the middle portions of the second connecting rod 15 are rotatably connected via a first rotating shaft 16. The first rotating shaft 16 is mounted on a first lifting seat 5, and the first connecting rod 14 and the second connecting rod 15 can open and close relative to each other around the first rotating shaft 16.

[0026] The lower end of the first link 14 is rotatably mounted with the third link 17, and the lower end of the second link 15 is rotatably mounted with the fourth link 18. The ends of the third link 17 and the fourth link 18 are rotatably connected through the second rotating shaft 19. The second rotating shaft 19 is mounted on the second lifting seat 12, and the third link 17 and the fourth link 18 can open and close relative to each other around the second rotating shaft 19.

[0027] A first thread-clamping cylinder 10 is provided between the first lifting seat 5 and the second lifting seat 12. The first thread-clamping cylinder 10 can drive the second lifting seat 12 to move up and down relative to the first lifting seat 5, thereby driving the first excess thread pulley 6 and the second excess thread pulley 7 to open and close relative to each other. When the drive rod of the first thread-clamping cylinder 10 extends, the second lifting seat 12 moves downward relative to the first lifting seat 5, and the first excess thread pulley 6 and the second excess thread pulley 7 engage relative to each other, facilitating the picking up of excess thread. When the drive rod of the first thread-clamping cylinder 10 retracts, the second lifting seat 12 moves upward relative to the first lifting seat 5, and the first excess thread pulley 6 and the second excess thread pulley 7 open relative to each other. When the first excess thread pulley 6 and the second excess thread pulley 7 are closing to clamp excess thread, due to the transmission action of the first connecting rod 14, the second connecting rod 15, the third connecting rod 17, and the fourth connecting rod 18, they will synchronously approach the bobbin positioning shaft 3, facilitating the clamping of thread ends. During the opening process, the first excess thread pulley 6 and the second excess thread pulley 7 can move away from the bobbin positioning shaft 3 to avoid interfering with the operation of other parts.

[0028] In this embodiment, the first wire clamping cylinder 10 is mounted on the first lifting seat 5, and the drive rod of the first wire clamping cylinder 10 is connected to the second lifting seat 12. Alternatively, in another embodiment, the first wire clamping cylinder 10 is mounted on the second lifting seat 12, and the drive rod of the first wire clamping cylinder 10 is connected to the first lifting seat 5.

[0029] The second lifting seat 12 is fixed with an air suction pipe 9, which is used to absorb the excess wire removed. The air suction port of the air suction pipe 9 is located on one side of the first excess wire reel 6 and the second excess wire reel 7. When the first wire clamping cylinder 10 drives the second lifting seat 12 to move downward relative to the first lifting seat 5, the air suction pipe 9 moves downward. When the first wire clamping cylinder 10 drives the second lifting seat 12 to move upward relative to the first lifting seat 5, the air suction pipe 9 moves upward.

[0030] The first residual wire pulley 6 is connected to the residual wire motor 8 via a residual wire transmission assembly. In this embodiment, a synchronous belt drive is used, but the residual wire transmission assembly can also adopt other known rotary transmission structures. The residual wire transmission assembly includes a first driving pulley 20, a first driven pulley 21, and a first synchronous belt 22. The drive shaft of the residual wire motor 8 is connected to the first driving pulley 20, and the first residual wire pulley 6 is rotatably connected to the first driven pulley 21. The first synchronous belt 22 is sleeved on the first driving pulley 20 and the second driven pulley 35.

[0031] Mounting base plate 1 is equipped with a first lifting cylinder 23. The drive rod of the first lifting cylinder 23 is connected to the second lifting seat 12, and the first lifting cylinder 23 can drive the second lifting seat 12 to move up and down. The second lifting seat 12 is connected to the first lifting seat 5 through a first wire clamping cylinder 10, so the first lifting seat 5 and the second lifting seat 12 move up and down synchronously. When the drive rod of the first lifting cylinder 23 extends, the first surplus thread wheel 6 and the second surplus thread wheel 7 move upward to the side of the bobbin positioning shaft 3. When the drive rod of the first lifting cylinder 23 retracts, the first surplus thread wheel 6 and the second surplus thread wheel 7 move downward to return to their original positions.

[0032] The mounting base plate 1 is provided with an inclined first guide rod 11. The upper and lower ends of the first guide rod 11 are respectively provided with a first mounting plate 41 and a second mounting plate 42. The first guide rod 11 is fixed on the mounting base plate 1 by the first mounting plate 41 and the second mounting plate 42.

[0033] In this embodiment, the first lifting seat 5 is slidably mounted on the mounting base plate 1 via the first guide rod 11, and the second lifting seat 12 is slidably mounted below the first lifting seat 5 via the second guide rod 13. Alternatively, the first lifting seat 5 and the second lifting seat 12 are slidably mounted on the mounting base plate 1 via the first guide rod 11. Both embodiments achieve the goal of synchronous up-and-down movement of the first lifting seat 5 and the second lifting seat 12 along the first guide rod 11.

[0034] The first lifting seat 5 is equipped with a push rod mounting frame 4. The push rod mounting frame 4 is provided with a push rod 24 for pushing the bobbin 29 to move. The push rod mounting frame 4 is also equipped with a first drive cylinder 25. The drive rod of the first drive cylinder 25 is connected to the push rod 24.

[0035] like Figure 5 and Figure 6 As shown, the winding drive mechanism includes a winding drive shaft 26 rotatably mounted on the mounting base plate 1. One end of the winding drive shaft 26 is coaxially connected to the bobbin positioning shaft 3, and the other end of the winding drive shaft 26 is connected to an ejector cylinder 27 that drives its axial movement. The winding motor 28 is connected to the winding drive shaft 26 through the winding transmission assembly, and can drive the winding drive shaft 26 and the bobbin positioning shaft 3 to rotate, thereby winding the yarn on the bobbin 29.

[0036] A positioning shaft mounting seat 32 is provided on the front side of the mounting base 1. The winding drive shaft 26 is slidably mounted in the positioning shaft mounting seat 32 and can rotate relative to the positioning shaft mounting seat 32. In order to reduce the rotational friction of the winding drive shaft 26, the winding drive shaft 26 can be fitted with a first bushing. The first bushing is rotatably connected to the positioning shaft mounting seat 32 through a first bearing.

[0037] Mounting base plate 1 is equipped with an ejector cylinder 27. The drive rod of ejector cylinder 27 is connected to ejector connecting seat 33. Ejector connecting seat 33 is provided with a rotating seat. Winding drive shaft 26 is connected to the rotating seat of ejector connecting seat 33. Ejector cylinder 27 drives ejector connecting seat 33 to move back and forth. Ejector connecting seat 33 drives winding drive shaft 26 to move back and forth axially relative to mounting base plate 1. Winding drive shaft 26 drives bobbin positioning shaft 3 to move back and forth axially.

[0038] The bobbin positioning shaft 3 has a mounting groove 3a on its surface. An elastic rod 31 is installed within the mounting groove 3a. The elastic rod 31 has a protrusion 31a in its middle portion that extends outward from the mounting groove 3a. The protrusion 31a elastically abuts against the inner wall of the bobbin 29. When the bobbin 29 on the bobbin positioning shaft 3 moves past the elastic rod 31, the protrusion 31a serves to fix the bobbin 29, preventing it from moving back and forth on the bobbin positioning shaft 3 during winding.

[0039] The inner wall of the bobbin 29 has a bobbin positioning hole 29a, and the surface of the bobbin positioning shaft 3 has a protrusion that can be inserted into the bobbin positioning hole 29a. When winding, the bobbin 29 rotates synchronously with the bobbin positioning shaft 3.

[0040] In this embodiment, the winding drive assembly includes a second driving pulley 34, a second driven pulley 35, and a second synchronous belt 36. The power output shaft of the winding motor 28 is rotatably connected to the second driving pulley 34, and the second driven pulley 35 is connected to the winding drive shaft 26. The second synchronous belt 36 is provided on the second driving pulley 34 and the second driven pulley 35. The winding drive shaft 26 is axially slidably mounted in the mounting hole of the second driven pulley 35, and the winding drive shaft 26 and the mounting hole of the second driven pulley 35 achieve synchronous rotation through a keyway fit. The winding motor 28 drives the winding drive shaft 26 to rotate through the second driven pulley 35, and the winding drive shaft 26 drives the bobbin positioning shaft 3 to rotate synchronously, facilitating the winding of the thread onto the bobbin 29. The winding drive assembly can be a synchronous belt drive structure, or it can adopt other known rotary drive structures.

[0041] The mounting base plate 1 is also provided with a thread clamping mechanism. The thread clamping mechanism delivers the sewing thread to the bobbin 29 at the bobbin positioning shaft 3 through a thread clamping cylinder. After the bobbin positioning shaft 3 rotates, a new thread can be wound on the bobbin 29. The working principle of the thread clamping mechanism is a publicly available technology in this technical field and will not be described here.

[0042] The automatic shuttle changing mechanism includes a shuttle changing drive shaft 37 rotatably mounted on the mounting base plate 1. The shuttle changing drive shaft 37 is provided with a key sleeve 38 that can move axially. The key sleeve 38 has a first connecting arm 38a and a second connecting arm 38b extending to both ends respectively. The outer ends of the first connecting arm 38a and the outer ends of the second connecting arm 38b are respectively connected to a shuttle core sleeve gripping assembly.

[0043] The mounting base plate 1 is equipped with a shuttle control motor 39 for driving the shuttle drive shaft 37 to rotate. The key sleeve 38 is connected to the shuttle drive shaft 37 via a key. The shuttle control motor 39 can control the key sleeve 38 and the two bobbin sleeve gripping assemblies on it to rotate to the corresponding positions. The key sleeve 38 is connected to an axial shuttle cylinder 40 that drives it to move axially. The axial shuttle cylinder 40 can push the key sleeve 38 and the two bobbin sleeve gripping assemblies on it to move axially back and forth.

[0044] The overall workflow is as follows:

[0045] The shuttle change control motor 39 drives the shuttle change drive shaft 37 to rotate to the first shuttle-taking angle. At this time, the bobbin sleeve gripping assembly of the first connecting arm 38a is located outside the sewing machine shuttle chamber 2, and the bobbin sleeve gripping assembly of the second connecting arm 38b grips the bobbin 29 and bobbin sleeve 30 with the bobbin thread wound on. When the bobbin thread in the sewing machine shuttle chamber 2 is used up, the bobbin sleeve gripping assembly of the first connecting arm 38a pulls the bobbin 29 and bobbin sleeve 30 out of the shuttle chamber 2.

[0046] The shuttle change control motor 39 drives the shuttle change drive shaft 37 to rotate 180 degrees, and the first connecting arm 38a and the second connecting arm 38b exchange positions. The bobbin sleeve gripping assembly on the second connecting arm 38b puts the bobbin 29 and bobbin sleeve 30 with the bobbin thread wound into the sewing machine shuttle compartment 2. After the bobbin thread is used up, the bobbin 29 and bobbin sleeve 30 rotate to the bottom with the first connecting arm 38a.

[0047] The shuttle change control motor 39 drives the shuttle change drive shaft 37 to rotate to the second shuttle picking angle, and the bobbin sleeve gripping assembly of the first connecting arm 38a moves the bobbin 29 and the bobbin sleeve 30 onto the bobbin positioning shaft 3.

[0048] The shuttle-changing control motor 39 drives the shuttle-changing drive shaft 37 to rotate to the third shuttle-taking angle, and the first connecting arm 38a and the second connecting arm 38b avoid the bobbin thread take-up mechanism. The first lifting cylinder 23 of the bobbin thread take-up mechanism drives the first take-up thread wheel 6 and the second take-up thread wheel 7 to move upward to one side of the bobbin positioning shaft 3. Then, the first take-up thread wheel 6 and the second take-up thread wheel 7 begin to close and move closer to the bobbin positioning shaft 3 to clamp the excess thread end. Then, the first take-up thread wheel 6 and the second take-up thread wheel 7 rotate to wind up the excess thread, and the excess thread enters the air intake of the air intake pipe 9. After the excess thread is taken up, the first take-up thread wheel 6 and the second take-up thread wheel 7 open relative to each other and move away from the bobbin positioning shaft 3. The first lifting cylinder 23 drives the first take-up thread wheel 6 and the second take-up thread wheel 7 to move downward and return to the initial state.

[0049] The shuttle change control motor 39 drives the shuttle change drive shaft 37 to rotate to the fourth shuttle pick-up angle. The ejector cylinder 27 of the winding drive mechanism pushes the bobbin positioning shaft 3 forward relative to the mounting base plate 1. Subsequently, the bobbin sleeve gripping assembly of the second connecting arm 38b grips the bobbin sleeve 30, and the bobbin sleeve 30 separates from the bobbin 29. At this time, the bobbin 29 is located at the front end of the bobbin positioning shaft 3, which facilitates subsequent operations.

[0050] The shuttle-changing control motor 39 drives the shuttle-changing drive shaft 37 to rotate to the third shuttle-picking angle. The bobbin sleeve gripping assembly of the first connecting arm 38a grips the bobbin sleeve 30 and rotates it, avoiding the bobbin thread picking mechanism. The first lifting cylinder 23 drives the push rod mounting bracket 4 to move upward, and the push rod 24 moves to the front of the bobbin positioning shaft 3. The first drive cylinder 25 drives the push rod 24 to push the bobbin 29 on the bobbin positioning shaft 3 from the front end to the rear end. Then, the first drive cylinder 25 drives the push rod 24 to retract, and the first lifting cylinder 23 drives the push rod mounting bracket 4 to return to its original position.

[0051] The shuttle change control motor 39 drives the shuttle change drive shaft 37 to rotate to the fourth shuttle picking angle, and the shuttle core sleeve gripping assembly of the first connecting arm 38a moves the shuttle core sleeve 30 to the front end of the shuttle core positioning shaft 3.

[0052] The shuttle-changing control motor 39 drives the shuttle-changing drive shaft 37 to rotate to the third shuttle-picking angle, and the winding drive mechanism winds and threades the empty bobbin 29 on the bobbin positioning shaft 3. The winding motor 28 drives the bobbin positioning shaft 3 to rotate, thereby winding the empty bobbin 29 on the bobbin positioning shaft 3. After the winding and threading are completed, the winding motor 28 stops working, and the ejector cylinder 27 of the winding drive mechanism moves the bobbin positioning shaft 3 backward relative to the mounting base plate 1, and the bobbin 29 moves to the front end of the bobbin positioning shaft 3 and engages with the bobbin sleeve 30.

[0053] The shuttle change control motor 39 drives the shuttle change drive shaft 37 to rotate to the fourth shuttle picking angle. The shuttle core sleeve gripping assembly of the second connecting arm 38b grips the bottom shuttle with the wound thread for later use. Then the above operation is repeated.

[0054] The preferred embodiment of this utility model has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of this utility model.

Claims

1. A bobbin-retrieving excess thread mechanism, comprising a first excess thread reel (6) and a second excess thread reel (7) capable of opening and closing relative to each other, characterized in that: The device has a first connecting rod (14) and a second connecting rod (15) that are cross-connected; the first residual wire pulley (6) is rotatably mounted on the upper end of the first connecting rod (14), and the second residual wire pulley (7) is rotatably mounted on the upper end of the second connecting rod (15). The middle part of the first connecting rod (14) and the middle part of the second connecting rod (15) are rotatably connected through a first rotating shaft (16), which is mounted on a first lifting seat (5); a third connecting rod (17) is rotatably mounted on the lower end of the first connecting rod (14), and a fourth connecting rod (18) is rotatably mounted on the lower end of the second connecting rod (15). The end of the third connecting rod (17) and the end of the fourth connecting rod (18) are rotatably connected through a second rotating shaft (19), which is mounted on a second lifting seat (12); a first wire clamping cylinder (10) is provided between the first lifting seat (5) and the second lifting seat (12).

2. The bobbin-retrieving excess thread mechanism according to claim 1, characterized in that: The first lifting seat (5) is slidably mounted on the mounting base plate (1) via the first guide rod (11); the second lifting seat (12) is slidably mounted below the first lifting seat (5) via the second guide rod (13).

3. The bobbin-retrieving excess thread mechanism according to claim 1, characterized in that: The first lifting seat (5) and the second lifting seat (12) are slidably mounted on the mounting base plate (1) via the first guide rod (11).

4. The bobbin-retrieving excess thread mechanism according to claim 1, characterized in that: The second lifting seat (12) is fixed with an air suction pipe (9), and the air suction port of the air suction pipe (9) is located on one side of the first remaining thread wheel (6) and the second remaining thread wheel (7).

5. The bobbin-retrieving excess thread mechanism according to claim 4, characterized in that: The first wire clamping cylinder (10) is fixedly installed on the first lifting seat (5), and the drive rod of the first wire clamping cylinder (10) is connected to the second lifting seat (12); the mounting base plate (1) is provided with a first lifting cylinder (23), and the drive rod of the first lifting cylinder (23) is connected to the second lifting seat (12).

6. The bobbin-retrieving excess thread mechanism according to claim 5, characterized in that: The first residual wire pulley (6) is connected to the residual wire motor (8) via the residual wire transmission assembly.

7. The bobbin-retrieving excess thread mechanism according to claim 6, characterized in that: The residual line drive assembly includes a first driving wheel (20), a first driven wheel (21), and a first synchronous belt (22). The drive shaft of the residual line motor (8) is connected to the first driving wheel (20). The first residual line wheel (6) is rotatably connected to the first driven wheel (21). The first synchronous belt (22) is sleeved on the first driving wheel (20) and the second driven wheel (35).

8. The bobbin-retrieving excess thread mechanism according to claim 1, characterized in that: The first lifting seat (5) is equipped with a push rod mounting bracket (4), and the push rod mounting bracket (4) is provided with a push rod (24) for pushing the bobbin (29) to move. The push rod (24) is connected to the first drive cylinder (25).

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