Stay wire guide assembly for shuttle changing device

Abstract

The utility model discloses a stay wire guide assembly for a shuttle changing device, which comprises a mounting base plate, a guide moving plate capable of moving back and forth and a guide motor for driving the guide moving plate to move, the guide moving plate is rotationally provided with a guide hook for dragging a bottom line; a tension spring is arranged between the guide moving plate and the guide hook, one end of the tension spring is connected with the guide moving plate, and the other end of the tension spring is connected with the rotatable guide hook. After the thread hook hooks a bottom thread, the guide hook pulls the bottom thread to move into the thread clamping piece, the bottom thread is fixed, and the accuracy of winding and perforating can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of industrial sewing machines, in particular to a thread pulling guide assembly for a shuttle changing device. Background Art

[0002] The invention patent with patent number 202123068316.9 discloses an automatic winding and bottom shuttle changing mechanism, including a mounting base, which is provided with a winding and threading control device, a thread hooking device, an automatic shuttle changing device and a bobbin thread removing device. The winding and threading control device of the utility model can wind the thread on the bobbin and automatically thread the thread end into place on the bobbin case. The thread hooking device can automatically pass the thread end through the first thread guide hole on the bobbin case. The automatic shuttle changing device removes the bottom shuttle from the sewing machine and replaces the wound bottom shuttle to the sewing machine. The bobbin thread removing device removes the remaining thread from the removed bottom shuttle to facilitate the next step of winding.

[0003] This patent disclosure has certain flaws. The mechanism uses a threading control plate to automatically thread the bobbin thread through the first gap, the second gap, and the second thread guide hole. The threading process requires repeated rotation of the threading control plate to achieve continuous movement, making the entire process overly cumbersome. If any step is incorrect, the bobbin thread can get stuck, affecting the efficiency of winding and shuttle changing. Summary of the Invention

[0004] In response to the above technical problems, the utility model provides a wire pulling guide assembly for a shuttle changing device. The guide motor drives the guide hook to pull the bottom line to move on the bobbin case, so that the bottom line is passed into place, the accuracy of winding and perforation is improved, and the efficiency of winding and shuttle changing is improved.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a wire pulling guide assembly for a shuttle changing device, including a mounting base, a guide movable plate that can move back and forth and a guide motor for driving the guide movable plate to move; the guide movable plate is rotatably installed with a guide hook for pulling the bottom line; a tension spring is provided between the guide movable plate and the guide hook, one end of the tension spring is connected to the guide movable plate, and the other end of the tension spring is connected to the rotatable guide hook.

[0006] In order to optimize the above technical solution, the present invention also includes the following improved technical solution.

[0007] A guide mounting plate is provided on the front side of the guide motor, a guide plate extending forward is provided on the front side of the guide mounting plate, a first protrusion and a second protrusion are provided on the upper end of the guide plate, a first platform is provided between the first protrusion and the second protrusion, and a guide rod is provided under the guide hook to abut against the guide plate.

[0008] The guide movable plate is slidably mounted on the guide plate via the second slide rail and the second sliding block; the guide movable plate is matched with the driving shaft of the guide motor via the guide movable member.

[0009] Compared with the prior art, in the wire-drawing guiding assembly of the present utility model, when the bobbin thread is wound around the bobbin core, it is caught in the wire inlet groove on the edge of the bobbin case sleeve, the guiding hook pulls the bobbin thread to move, and the bobbin thread enters the wire inlet hole along the wire deflecting edge; after the wire hook picks up the bobbin thread, the guiding hook pulls the bobbin thread to move into the thread clamping piece to fix the bobbin thread, improving the accuracy of wire winding and threading. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic three-dimensional structure diagram of this embodiment.

[0011] Figure 2 is an exploded schematic three-dimensional structure diagram of this embodiment.

[0012] Figure 3 is Figure 2 an enlarged view of part B in

[0013] Figure 4 an exploded schematic three-dimensional structure diagram of the wire winding and threading control assembly.

[0014] Figure 5 an exploded schematic three-dimensional structure diagram of the wire-drawing guiding assembly.

[0015] Figure 6 an exploded schematic three-dimensional structure diagram of the thread hooking assembly.

[0016] Figure 7 is Figure 1 an enlarged view of part A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0018] Figures 1 to 7 The shown is a schematic structure diagram of the present utility model.

[0019] The reference numerals therein are: mounting substrate 1, bobbin case 2, bobbin case sleeve 3, wire inlet groove 3a, wire inlet hole 3b, wire inlet retaining piece 4, wire deflecting edge 4a, bobbin 5, lead wire rod 6, lead wire hole 6a, bobbin case lever 7, handling assembly, handling base 8, handling moving seat 9, first slide rail 10, first slider 11, first handling cylinder 12, handling connecting plate 13, second handling cylinder 14, gripper 15, gripper mounting seat 16, grasping cylinder 17, grasping cylinder mounting seat 18, winding and threading control assembly, winding rotating shaft 19, rotating shaft connecting piece 20, first bearing 21, first synchronous pulley 22, first synchronous pulley seat 23, winding motor 24, winding motor mounting plate 25, second synchronous pulley 26, synchronous belt 27, second bearing 28, push rod cylinder 29, push rod cylinder mounting block 30, connecting ring 31, magnet 32, clip mounting ring 33, wire clamping piece 34, wire pulling guiding assembly, guiding mounting plate 35, guiding plate 36, first convex block 36a, second convex block 36b, first platform 36c, guiding moving plate 37, guiding motor 38, guiding moving piece 39, second slide rail 40, second slider 41, guiding cylinder 42, guiding rotating shaft 43, guiding connecting block 44, guiding hook 45, guide rod 46, thread hooking assembly, thread hooking mounting seat 47, thread hooking moving seat 48, third slide rail 49, third slider 50, first thread hooking cylinder 51, first thread hooking mounting seat 52, first thread hooking joint 53, second thread hooking cylinder 54, second thread hooking mounting seat 55, thread hook 56, thread hook guiding seat 57, thread hook guiding hole 58, spring piece 59, cutter 60, cutter cylinder 61, cutter cylinder mounting seat 62, tension spring 63, tension spring connecting piece 64.

[0020] As Figure 1 and Figure 2 shown, the automatic winding and bobbin changing device of the present utility model includes a handling assembly, a winding and threading control assembly, a thread hooking assembly, and a wire pulling guiding assembly. The handling assembly transfers the bobbin case 2 to the winding rotating shaft 19 of the winding and threading control assembly. The winding and threading control assembly winds the bottom thread around the bobbin 5. The wire pulling guiding assembly pulls the bottom thread to pass through the bobbin case sleeve 3 in place. The thread hooking device can extend the thread hook 56 to pass the bottom shuttle thread through the lead wire hole 6a.

[0021] As Figure 3 shown, the bobbin case 2 is composed of a bobbin case sleeve 3 and a bobbin 5. A lead wire rod 6 and a movable bobbin case lever 7 are installed at the front end of the bobbin case sleeve 3. One end of the lead wire rod 6 is provided with a lead wire hole 6a for the thread hook 56 to pass through.

[0022] A wire inlet groove 3a for the bottom thread to enter is provided at the edge of the bobbin case sleeve 3. A wire inlet hole 3b is provided on the bobbin case sleeve 3. A wire inlet retaining piece 4 for guiding the bottom thread to enter the wire inlet groove 3a from the wire inlet hole 3b is installed outside the bobbin case sleeve 3. The wire inlet retaining piece 4 has a wire deflecting edge 4a for guiding the bottom thread. After the bottom thread enters the wire inlet groove 3a, it moves along the wire deflecting edge 4a into the wire inlet hole 3b.

[0023] The transport assembly includes a first transport cylinder 12, a second transport cylinder 14 and a grabbing cylinder 17. The grabbing cylinder 17 clamps the empty bobbin case 2 through the claw hand 15 and moves the empty bobbin case 2 to the winding and threading control assembly through the first transport cylinder 12 and the second transport cylinder 14.

[0024] A transport base 8 is mounted on the front side of the mounting base 1. A transport movable seat 9 is provided on the transport base 8. A first slide rail 10 is mounted on the upper surface of the transport base 8. A first slider 11 is mounted on the lower surface of the transport movable seat 9 to engage with the first slide rail 10. A first transport cylinder 12 has its cylinder body mounted on one end of the transport base 8. The drive rod of the first transport cylinder 12 is connected to the transport movable seat 9. The first transport cylinder 12 pushes the transport movable seat 9 to move horizontally along the first slide rail 10.

[0025] A transport connecting plate 13 is installed at the front end of the transport movable base 9, and a second transport cylinder 14 is provided on one side of the transport connecting plate 13. The driving rod of the second transport cylinder 14 is connected to the claw hand mounting base 16, and a rotatable claw hand 15 is installed in the claw hand mounting base 16. A grabbing cylinder mounting base 18 is installed on the claw hand mounting base 16, and the cylinder body of the grabbing cylinder 17 is installed in the grabbing cylinder mounting base 18. The driving rod of the grabbing cylinder 17 is connected to the rotatable claw hand 15, and the grabbing cylinder 17 drives the claw hand 15 to open or close.

[0026] The first transport cylinder 12 and the second transport cylinder 14 move the claw hand 15 close to the bobbin case 2 to be wound, and the grabbing cylinder 17 drives the claw hand 15 to clamp the bobbin case lever 7 in front of the bobbin case 2, and then the bobbin case 2 is moved to the winding and threading control assembly by the first transport cylinder 12 and the second transport cylinder 14. After the bobbin case 2 is fixed, the grabbing cylinder 17 retracts the driving rod, the claw hand 15 releases the bobbin case lever 7, and the winding and threading control assembly starts winding.

[0027] like Figure 4 As shown, the bobbin winding and threading control assembly includes a winding motor 24, a push rod cylinder 29, a thread tensioner 34, and a winding shaft 19. The empty bobbin case 2 is fixed to the rotatable winding shaft 19. The push rod cylinder 29 pushes out the bobbin case 3 to expose the bobbin 5. The winding motor 24 drives the bobbin thread inside the thread tensioner 34 to rotate and wind it around the bobbin 5. After the bobbin thread has been wound around the bobbin 5 several times, it naturally escapes from the thread tensioner 34. After winding is complete, the push rod cylinder 29 retracts the winding shaft 19, and the bobbin case 3 is installed outside the bobbin 5. The bobbin thread is then inserted into the thread feed slot 3a on the bobbin case 3.

[0028] The mounting substrate 1 is provided with a rotatable winding shaft 19. One end of the winding shaft 19 is provided with a shaft connecting member 20. The shaft connecting member 20 is connected to the mounting substrate 1 through a first bearing 21. One end of the shaft connecting member 20 is provided with a first synchronous pulley 22. The first synchronous pulley 22 is installed in a first synchronous pulley seat 23 through a second bearing 28. A winding motor mounting plate 25 is provided at the rear side of the mounting substrate 1. A winding motor 24 is installed on the winding motor mounting plate 25. The drive shaft of the winding motor 24 is connected to a second synchronous pulley 26. A synchronous belt 27 is sleeved on the second synchronous pulley 26 and the first synchronous pulley 22. The winding motor 24 drives the synchronous belt 27 to rotate, and the synchronous belt 27 drives the winding shaft 19 to rotate.

[0029] A push rod cylinder mounting block 30 is provided at the rear side of the first synchronous pulley 22. The first synchronous pulley 22 is connected to the push rod cylinder mounting block 30. A push rod cylinder 29 is installed in the push rod cylinder mounting block 30. The drive rod of the push rod cylinder 29 is connected to the winding shaft 19. The push rod cylinder 29 pushes the bobbin case sleeve 3 on the winding shaft 19 to move back and forth.

[0030] A connecting ring 31 is provided in the middle of the winding shaft 19. A magnet 32 is provided in the connecting ring 31. The magnet 32 is installed on the winding shaft 19. The magnet 32 can attract the bobbin core 5 in the bobbin case 2. A clip mounting ring 33 is sleeved outside the connecting ring 31. Clip wires 34 are installed on the clip mounting ring 33. The head end of the clip wire 34 is fixed on the clip mounting ring 33, and the end of the clip wire 34 extends outward for a part.

[0031] The end of the bobbin thread is clamped in the clip wire 34. After the winding motor 24 drives the end of the thread in the clip wire 34 to rotate and wind around the bobbin core 5 for several turns, the bobbin thread is tightened and then naturally disengages from the clip wire 34. Subsequently, the winding motor 24 drives the bobbin core 5 to rotate until a set length of bobbin thread is wound on the bobbin core 5.

[0032] As Figure 5 shown, the wire pulling and guiding assembly includes a guiding cylinder 42, a guiding hook 45 installed on a guiding moving plate 37, and a guiding plate 36 installed in front of a guiding mounting plate 35. After the bobbin thread is caught in the wire inlet groove 3a on the bobbin case sleeve 3, the guiding cylinder 42 drives the guiding hook 45 to move forward. The guiding hook 45 pulls the bobbin thread forward until the bobbin thread enters the wire inlet hole 3b of the bobbin case sleeve 3. After the wire hook 56 in the thread hooking assembly hooks the bobbin thread, the guiding cylinder 42 drives the guiding hook 45 to move backward. The guiding hook 45 pulls the bobbin thread backward until the bobbin thread is caught in the clip wire 34.

[0033] There is a guiding mounting plate 35 at the rear side of the mounting substrate 1. A guiding motor 38 is mounted at the rear side of the guiding mounting plate 35. A guiding plate 36 extending forward is mounted at the side of the guiding mounting plate 35. A second slide rail 40 is mounted inside the guiding plate 36. There is a guiding moving plate 37 at the front side of the guiding mounting plate 35. A guiding moving member 39 is mounted on the driving shaft of the guiding motor 38. The guiding moving plate 37 is connected to the driving shaft of the guiding motor 38 through the guiding moving member 39. A second slider 41 cooperating with the second slide rail 40 is mounted on the outer side of the guiding moving plate 37. The guiding motor 38 drives the guiding moving plate 37 to move back and forth along the second slide rail 40.

[0034] A guiding connecting block 44 is rotatably mounted on the guiding moving plate 37 through a guiding rotating shaft 43. A guiding hook 45 is mounted on the guiding connecting block 44. The guiding hook 45 can hook the bobbin thread. There is a guide rod 46 cooperating with the guiding plate 36 below the guiding hook 45. The guide rod 46 is connected to the guiding connecting block 44. When the guiding connecting block 44 moves back and forth following the guiding moving plate 37, the guide rod 46 abuts against the guiding plate 36 and moves back and forth.

[0035] There is a tension spring 63 in front of the guiding moving plate 37. There is a tension spring connecting member 64 on the guiding connecting block 44. The upper end of the tension spring 63 is connected to the guiding connecting block 44 through the tension spring connecting member 64. There is a tension spring connecting member 64 on the guiding moving plate 37. The lower end of the tension spring 63 is connected to the guiding moving plate 37 through the tension spring connecting member 64.

[0036] There are a first convex block 36a and a second convex block 36b at the upper end of the guiding plate 36. There is a first platform 36c between the first convex block 36a and the second convex block 36b. When the guide rod 46 abuts against the first convex block 36a and the second convex block 36b on the guiding plate 36, the guide rod 46 drives the guiding connecting block 44 to rotate counterclockwise around the guiding rotating shaft 43, and the guiding hook 45 rotates counterclockwise to tighten the bobbin thread. At this time, the tension spring 63 is in a stretched state. When the guide rod 46 abuts against the first platform 36c on the guiding plate 36, the guide rod 46 drives the guiding connecting block 44 to rotate clockwise, and the guiding hook 45 rotates clockwise. The guiding hook 45 just avoids the part extending outward of the thread clamping piece 34.

[0037] As Figure 6 shown, the thread hooking assembly includes a thread hook 56, a first thread hooking air cylinder 51, a second thread hooking air cylinder 54, and a thread hook guiding seat 57. The first thread hooking air cylinder 51 and the second thread hooking air cylinder 54 drive the thread hook 56 to extend out along the thread hook guiding hole 58 on the thread hook guiding seat 57. The thread hook 56 passes through the thread guiding hole 6a on the lead rod 6 to hook the bobbin thread perforation.

[0038] Before the installation base, there is a thread-hooking installation seat 47. On the thread-hooking installation seat 47, there is a thread-hooking moving seat 48. The lower surface of the thread-hooking moving seat 48 is installed with a third slide rail 49, and on the thread-hooking installation seat 47, there is a third slider 50 that cooperates with the third slide rail 49. The cylinder block of the first thread-hooking cylinder 51 is installed on the thread-hooking installation seat 47 through a first thread-hooking installation seat 52. The driving rod of the first thread-hooking cylinder 51 is connected to the thread-hooking moving seat 48 through a first thread-hooking joint 53. The first thread-hooking cylinder 51 drives the thread-hooking moving seat 48 to move back and forth along the third slide rail 49.

[0039] The cylinder block of the second thread-hooking cylinder 54 is installed at one end of the thread-hooking moving seat 48 through a second thread-hooking installation seat 55. The driving rod of the second thread-hooking cylinder 54 is installed with a thread hook 56. At the other end of the thread-hooking moving seat 48, a thread-hook guiding seat 57 is installed. On the thread-hook guiding seat 57, there is a thread-hook guiding hole 58 for guiding the thread hook 56 to extend out.

[0040] As Figure 7 shown, at the front end of the thread-hook guiding seat 57, there is a spring piece 59. When the first thread-hooking cylinder 51 drives the thread-hook guiding seat 57 to move forward, the spring piece 59 at the front end of the thread-hook guiding seat 57 abuts against the lead wire rod 6 on the bobbin case 2. The spring piece 59 assists in fixing the position of the bobbin case 2, preventing the bobbin case 2 from rotating, and improving the accuracy of the thread hook 56 passing through the hole.

[0041] On the front side of the installation substrate 1, there is a cutter cylinder installation seat 62. The cylinder block of the cutter cylinder 61 is installed on the cutter cylinder installation seat 62. The driving rod of the cutter cylinder 61 is connected to a cutter 60, and the cutter 60 can cut the bobbin thread. The thread hook 56 passes the bobbin thread out from the lead wire hole 6a, and the guiding hook 45 in the thread-pulling guiding assembly pulls the bobbin thread backward until it is clamped into the thread clamping piece 34. The cutter cylinder 61 drives the cutter 60 to cut the bobbin thread.

[0042] The best embodiments of the present utility model have been illustrated, and various changes or modifications made by those of ordinary skill in the art will not depart from the scope of the present utility model.

Claims

1. A wire guiding assembly for a shuttle changing device, comprising a mounting substrate (1), characterized in that: There is a guiding moving plate (37) capable of moving back and forth and a guiding motor (38) for driving the guiding moving plate (37) to move; a guiding hook (45) for pulling the bobbin thread is rotatably installed on the guiding moving plate (37); a tension spring (63) is arranged between the guiding moving plate (37) and the guiding hook (45), one end of the tension spring (63) is connected to the guiding moving plate (37), and the other end of the tension spring (63) is connected to the rotatable guiding hook (45).

2. The wire guiding assembly according to claim 1, wherein: A guiding mounting plate (35) is arranged on the front side of the guiding motor (38), a guiding plate (36) extending forward is arranged on the front side of the guiding mounting plate (35), a first convex block (36a) and a second convex block (36b) are arranged at the upper end of the guiding plate (36), a first platform (36c) is arranged between the first convex block (36a) and the second convex block (36b), and a guide rod (46) abuting against the guiding plate (36) is arranged below the guiding hook (45).

3. The wire guiding assembly according to claim 2, characterized in that: The guiding moving plate (37) is slidably mounted on the guiding plate (36) through a second slide rail (40) and a second slider (41); the guiding moving plate (37) is matched with the driving shaft of the guiding motor (38) through a guiding moving member (39).

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