Thread trimming mechanism of double needle computerized embroidery machine

Abstract

This utility model discloses a thread-cutting mechanism for a double-needle computerized embroidery machine. It relates to the field of embroidery machine technology. Specifically, this application includes a thread-cutting pull rod, a thread-cutting connecting rod assembly, a first scissor assembly, and a second scissor assembly. The thread-cutting pull rod extends laterally and can move linearly laterally. The first and second scissor assemblies are arranged side-by-side laterally. The first end of the thread-cutting connecting rod assembly is fixedly connected to the thread-cutting pull rod, the second end is fixedly connected to the first scissor assembly, and the third end is connected to the second scissor assembly. The first and second scissor assemblies of this utility model are driven by the thread-cutting pull rod and synchronously perform thread-cutting actions under the drive of the thread-cutting connecting rod assembly. This reduces the space occupied by the thread-cutting mechanism and improves the synchronicity of the double-needle thread-cutting action, thus making the structure of the double-needle computerized embroidery machine more compact and improving the space utilization and embroidery quality.

Description

Technical Field

[0001] This utility model relates to the field of embroidery machine technology, and in particular to a thread trimming mechanism for a double-needle computerized embroidery machine.

[0002] mechanism. Background Technology

[0003] With the development of the industry, the market demands higher and higher standards for embroidery varieties and efficiency, leading to the increasingly widespread application of double-needle computerized embroidery machines. A double-needle computerized embroidery machine is a professional embroidery device that combines double-needle technology with computer-automated control. Through synchronous double-needle sewing and digital programming, it achieves high-precision and high-efficiency decorative embroidery techniques.

[0004] Double-needle computerized embroidery machines are usually equipped with a self-cutting thread mechanism. This mechanism is used during the embroidery process to cut the thread when the embroidery of a certain color is completed and the color needs to be changed, or when a part of the pattern is completed and the next area of ​​the pattern needs to be embroidered. This ensures that the thread can be used normally when embroidery starts again, and at the same time prevents the thread ends from being too long and affecting the appearance and quality of the embroidery.

[0005] Because double-needle computerized embroidery machines use two parallel needles and corresponding shuttle heads to work synchronously to form two parallel stitches with a fixed spacing, existing double-needle computerized embroidery machines typically have two independent thread-cutting units in their self-cutting mechanism, each corresponding to the cutting of the double-needle thread. However, these two independent thread-cutting units occupy a large space and have poor synchronization, resulting in poor space utilization, increased size, and reduced embroidery quality. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of the prior art by providing a thread-cutting mechanism for a double-needle computerized embroidery machine. This mechanism reduces the space occupied by the thread-cutting mechanism and improves the synchronization of the double-needle thread-cutting action, thereby making the structure of the double-needle computerized embroidery machine more compact and improving the space utilization and embroidery quality.

[0007] This utility model proposes a thread-cutting mechanism for a double-needle computerized embroidery machine, including a thread-cutting pull rod, a thread-cutting connecting rod assembly, a first scissor assembly, and a second scissor assembly. The thread-cutting pull rod extends laterally and can move linearly laterally. The first scissor assembly and the second scissor assembly are arranged side by side laterally. The first end of the thread-cutting connecting rod assembly is fixedly connected to the thread-cutting pull rod, the second end is fixedly connected to the first scissor assembly, and the third end is connected to the second scissor assembly, so that during the lateral linear movement of the thread-cutting pull rod, the first scissor assembly and the second scissor assembly simultaneously cut the thread.

[0008] Furthermore, the wire-cutting linkage assembly includes a drive rod fixedly connected to the wire-cutting pull rod, a first connecting rod fixedly connected to the first scissor assembly, and a second connecting rod fixedly connected to the second scissor assembly. The first connecting rod and the second connecting rod are arranged in parallel and spaced apart, and both are rotatably connected to the drive rod.

[0009] Furthermore, the driving rod includes a connecting seat fixedly connected to the wire-cutting rod, a third connecting rod with one end rotatably connected to the connecting seat and the other end rotatably connected to the first connecting rod, and a fourth connecting rod with one end rotatably connected to the first connecting rod and the other end rotatably connected to the second connecting rod.

[0010] Furthermore, the wire cutting mechanism also includes a wire cutting fixing seat arranged parallel to and spaced apart from the crossbeam of the shuttle box body in the transverse direction. The wire cutting fixing seat is fixedly connected to the shuttle box body. The first scissor assembly is disposed on the wire cutting fixing seat, and the second scissor assembly is disposed on the crossbeam of the shuttle box body.

[0011] Furthermore, the wire cutting mechanism also includes a pull rod bracket with one end fixedly connected to the wire cutting fixing seat and the other end extending away from the wire cutting fixing seat. The end of the pull rod bracket extending away from the wire cutting fixing seat is provided with a collar, and the wire cutting pull rod passes through the collar laterally and is movably connected to the collar.

[0012] Furthermore, the first scissor assembly includes a first fixed blade fixedly mounted on the top of the wire cutting fixture, a first drive shaft that extends vertically through the wire cutting fixture and is rotatably connected to the wire cutting fixture, and a first movable blade disposed on the top of the first drive shaft, and the first connecting rod is fixedly connected to the bottom of the first drive shaft.

[0013] Furthermore, the second scissor assembly includes a second fixed blade fixedly mounted on the top of the crossbeam of the shuttle box, a second drive shaft that runs vertically through the crossbeam of the shuttle box and is rotatably connected to the crossbeam of the shuttle box, and a second movable blade disposed on the top of the second drive shaft, and the second connecting rod being fixedly connected to the bottom of the second drive shaft.

[0014] Furthermore, the wire cutting mechanism also includes a wire cutting guide seat located directly below the crossbeam of the shuttle box and fixedly connected to the shuttle box. The second drive shaft passes through the crossbeam of the shuttle box and the wire cutting guide seat in sequence along the vertical direction, and is rotatably connected to the crossbeam of the shuttle box and the wire cutting guide seat.

[0015] Furthermore, the wire-cutting mechanism also includes a return spring sleeved on the wire-cutting pull rod, one end of which abuts against the pull rod bracket and the other end of which abuts against the wire-cutting connecting rod assembly.

[0016] Furthermore, the wire cutting mechanism also includes a first bearing sleeve disposed between the first drive shaft and the wire cutting fixing seat, and a second bearing sleeve disposed between the second drive shaft and the wire cutting guide seat.

[0017] The thread-cutting mechanism of the double-needle computerized embroidery machine proposed in this utility model has the following beneficial effects:

[0018] (1) The first and second scissor components of this thread cutting mechanism are driven by the thread cutting lever and perform thread cutting actions synchronously under the drive of the thread cutting linkage component. This can reduce the space occupied by the thread cutting mechanism and improve the synchronicity of the double needle thread cutting action, thereby making the structure of the double needle computer embroidery machine more compact and improving the space utilization and embroidery quality of the double needle computer embroidery machine.

[0019] (2) The wire cutting linkage assembly of this wire cutting mechanism includes a driving rod, a first link and a second link. The driving rod is fixedly connected to the wire cutting pull rod, the first link is fixedly connected to the first scissor assembly, and the second link is fixedly connected to the second scissor assembly, so that the wire cutting linkage assembly can drive the first scissor assembly and the second scissor assembly to perform wire cutting actions synchronously.

[0020] (3) The wire cutting mechanism also includes a wire cutting fixing seat, which is fixedly connected to the shuttle box body and is arranged parallel to the crossbeam of the shuttle box body in the transverse direction. The first scissor assembly is set on the wire cutting fixing seat, and the second scissor assembly is set on the crossbeam of the shuttle box body, thereby realizing the setting of the first scissor assembly and the second scissor assembly on the shuttle box body.

[0021] (4) The wire cutting mechanism is provided with a collar at one end of the pull rod bracket that extends away from the wire cutting fixed seat. The wire cutting pull rod passes through the collar laterally and is movably connected to the collar, so that the pull rod bracket supports the wire cutting pull rod and the wire cutting pull rod can move laterally in a straight line along the collar, thus realizing the setting of the wire cutting pull rod on the shuttle box;

[0022] (5) The first scissor assembly of this wire cutting mechanism includes a first fixed blade, a first drive shaft and a first movable blade. The first fixed blade is fixedly installed on the top of the wire cutting fixed seat. The first drive shaft passes through the wire cutting fixed seat vertically and is rotatably connected to the wire cutting fixed seat. The first movable blade is located on the top of the first drive shaft. The first connecting rod is fixedly connected to the bottom of the first drive shaft, so that the first movable blade and the first fixed blade are opened or closed by the first drive shaft, thereby realizing the wire cutting of the first scissor assembly.

[0023] (6) The second scissor assembly of this wire cutting mechanism includes a second fixed blade, a second drive shaft and a second movable blade. The second fixed blade is fixedly installed on the top of the crossbeam of the shuttle box. The second drive shaft passes through the crossbeam of the shuttle box vertically and is rotatably connected to the crossbeam of the shuttle box. The second movable blade is located on the top of the second drive shaft. The second connecting rod is fixedly connected to the bottom of the second drive shaft. Thus, the second movable blade and the second fixed blade are opened or closed by the second drive shaft, thereby realizing the wire cutting of the second scissor assembly.

[0024] (7) The wire cutting mechanism of this wire cutting mechanism also includes a wire cutting guide seat. The wire cutting guide seat is located directly below the crossbeam of the shuttle box and is fixedly connected to the shuttle box. The wire cutting guide seat limits the second drive shaft from below to prevent the second drive shaft from swinging during rotation, thereby ensuring the stability of the wire cutting action of the second scissor assembly.

[0025] (8) The wire cutting mechanism also includes a return spring. The return spring is sleeved on the wire cutting pull rod, with one end abutting against the pull rod bracket and the other end abutting against the connecting seat. Thus, through the elastic force of the return spring, the connecting seat and the wire cutting pull rod move in opposite directions, driving the first fixed blade to close with the first moving blade, and the second fixed blade to close with the second moving blade, so as to realize the wire cutting of double needle face thread by the wire cutting mechanism, thus making the use of the wire cutting mechanism simpler, more convenient and easier to implement. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements.

[0027] Figure 1 This is a schematic diagram of the structure of a double-needle computerized embroidery machine according to an embodiment of the present invention, in which the thread-cutting mechanism is installed on the shuttle box.

[0028] Figure 2 This is a schematic diagram of the thread-cutting linkage assembly of a thread-cutting mechanism in a double-needle computerized embroidery machine according to an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of the first scissor assembly of the thread-cutting mechanism of a double-needle computerized embroidery machine according to an embodiment of the present invention, which is mounted on a thread-cutting fixing seat.

[0030] Figure 4 This is a schematic diagram of the structure of the second scissor assembly of the thread-cutting mechanism of a double-needle computerized embroidery machine according to an embodiment of the present invention, which is installed on the crossbeam of the shuttle box.

[0031] In the diagram: 1. Thread cutting pull rod; 2. Thread cutting connecting rod assembly; 21. First connecting rod; 22. Second connecting rod; 23. Connecting seat; 24. Third connecting rod; 25. Fourth connecting rod; 3. First scissor assembly; 31. First fixed blade; 32. First moving blade; 33. First drive shaft; 34. First bearing sleeve; 4. Second scissor assembly; 41. Second fixed blade; 42. Second moving blade; 43. Second drive shaft; 44. Second bearing sleeve; 5. Thread cutting fixing seat; 6. Pull rod bracket; 61. Collar; 7. Thread cutting guide seat; 8. Return spring; 9. Shuttle box body; 91. Crossbeam. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] Please see Figures 1-4 The thread-cutting mechanism of a double-needle computerized embroidery machine according to an embodiment of the present invention is set on the shuttle box 9 at the bottom of the double-needle computerized embroidery machine. Typically, one shuttle box 9 of the double-needle computerized embroidery machine corresponds to two machine heads, that is, two thread-cutting mechanisms are set on one shuttle box 9, which respectively correspond to the thread cutting of the two double-needle machine heads.

[0034] Specifically, the thread cutting mechanism includes a thread cutting rod 1, which extends laterally at the bottom of the shuttle box 9 and can move laterally in a straight line; it also includes a first scissor assembly 3 and a second scissor assembly 4 arranged side by side in the lateral direction, which are respectively corresponding to the thread cutting of double needle thread.

[0035] In this application, the wire cutting mechanism further includes a wire cutting linkage assembly 2, the first end of which is fixedly connected to the wire cutting pull rod 1, the second end of which is fixedly connected to the first scissor assembly 3, and the third end of which is fixedly connected to the second scissor assembly 4.

[0036] Therefore, when the thread-cutting lever 1 moves horizontally in a straight line, the thread-cutting connecting rod assembly 2 drives the first scissor assembly 3 and the second scissor assembly 4 to cut the thread simultaneously, thereby achieving the cutting of the double-needle thread. This ensures that the thread can be used normally when embroidery begins again, while preventing the thread end from being too long and affecting the appearance and quality of the embroidery.

[0037] In this application, the first scissor assembly 3 and the second scissor assembly 4 are driven by the wire cutting lever 1 and perform wire cutting actions synchronously under the drive of the wire cutting linkage assembly 2. That is, the first scissor assembly 3 and the second scissor assembly 4 are driven by the same driving component.

[0038] Therefore, although this scissor mechanism has two scissor components, each corresponding to the cutting of the double-needle thread, the two scissor components are driven by the same drive unit. Therefore, compared with the existing technology, it can reduce the space occupied by the thread cutting mechanism and improve the synchronization of the double-needle thread cutting action, thereby making the structure of the double-needle computerized embroidery machine more compact and improving the space utilization and embroidery quality of the double-needle computerized embroidery machine.

[0039] Specifically, in this embodiment, the wire-cutting linkage assembly 2 includes a driving rod, a first connecting rod 21, and a second connecting rod 22. The driving rod is fixedly connected to the wire-cutting pull rod 1, the first connecting rod 21 is fixedly connected to the first scissor assembly 3, and the second connecting rod 22 is fixedly connected to the second scissor assembly 4. That is, the first end of the wire-cutting linkage assembly 2 is the end where the driving rod is fixedly connected to the wire-cutting pull rod 1, the second end is the end where the first connecting rod 21 is fixedly connected to the first scissor assembly 3, and the third end is the end where the second connecting rod 22 is fixedly connected to the second scissor assembly 4.

[0040] The first link 21 and the second link 22 are arranged in parallel and spaced apart, and both are rotatably connected to the driving rod. Therefore, when the wire shearing rod 1 moves laterally in a straight line, the first link 21 and the second link 22 are driven to rotate synchronously through the driving rod.

[0041] Then, the first connecting rod 21 drives the first scissor assembly 3 to rotate, and the second connecting rod 22 drives the second scissor assembly 4 to rotate, so that the first scissor assembly 3 and the second scissor assembly 4 perform thread cutting actions synchronously. This can reduce the space occupied by the thread cutting mechanism and improve the synchronization of the double needle thread cutting action, thereby making the structure of the double needle computer embroidery machine more compact and improving the space utilization and embroidery quality of the double needle computer embroidery machine.

[0042] Furthermore, in this embodiment, the driving rod includes a connecting seat 23, which is fixedly connected to the wire cutting rod 1. That is, the first end of the wire cutting rod assembly 2 is the end where the connecting seat 23 is fixedly connected to the wire cutting rod 1.

[0043] The driving rod also includes a third link 24 and a fourth link 25. One end of the third link 24 is rotatably connected to the connecting seat 23 and the other end is rotatably connected to the first link 21. One end of the fourth link 25 is rotatably connected to the first link 21 and the other end is rotatably connected to the second link 22. Therefore, when the wire-cutting rod 1 moves laterally in a straight line, it drives the connecting seat 23 to move laterally in a straight line in a synchronized manner.

[0044] When the connecting seat 23 moves laterally in a straight line, the third connecting rod 24 drives the first connecting rod 21 to rotate, and at the same time, the fourth connecting rod 25 drives the second connecting rod 22 to rotate. The first connecting rod 21 drives the first scissor assembly 3 to rotate, and the second connecting rod 22 drives the second scissor assembly 4 to rotate, so that the first scissor assembly 3 and the second scissor assembly 4 perform thread cutting actions synchronously. This reduces the space occupied by the thread cutting mechanism and improves the synchronization of the double-needle thread cutting action, thereby making the structure of the double-needle computerized embroidery machine more compact and improving the space utilization and embroidery quality of the double-needle computerized embroidery machine.

[0045] As mentioned in the previous embodiment, the thread-cutting mechanism of the double-needle computerized embroidery machine is located on the shuttle box 9 at the bottom of the machine. Specifically, in this embodiment, the thread-cutting mechanism further includes a thread-cutting fixing seat 5, which is fixedly connected to the shuttle box 9 and is arranged horizontally parallel to the crossbeam 91 of the shuttle box 9. The first scissor assembly 3 is located on the thread-cutting fixing seat 5, and the second scissor assembly 4 is located on the crossbeam 91 of the shuttle box 9, thereby realizing the arrangement of the first scissor assembly 3 and the second scissor assembly 4 on the shuttle box 9.

[0046] Furthermore, in this embodiment, the wire cutting mechanism also includes a pull rod bracket 6, one end of which is fixedly connected to the wire cutting fixing seat 5, and the other end extends away from the wire cutting fixing seat 5. A collar 61 is provided at the end of the pull rod bracket 6 that extends away from the wire cutting fixing seat 5.

[0047] The wire-cutting lever 1 passes through the collar 61 laterally and is movably connected to the collar 61. This allows the lever bracket 6 to support the wire-cutting lever 1 and enables the wire-cutting lever 1 to move laterally in a straight line along the collar 61. This allows the wire-cutting lever 1 to be positioned on the front side of the shuttle box 9, thereby enabling the wire-cutting mechanism to be positioned on the shuttle box 9.

[0048] In this embodiment, the first scissor assembly 3 includes a first fixed blade 31, a first drive shaft 33, and a first movable blade 32. The first fixed blade 31 is fixedly installed on the top of the wire cutting fixing seat 5. The first drive shaft 33 passes through the wire cutting fixing seat 5 vertically and is rotatably connected to the wire cutting fixing seat 5. The first movable blade 32 is disposed on the top of the first drive shaft 33. The first connecting rod 21 is fixedly connected to the bottom of the first drive shaft 33.

[0049] When the first scissor assembly 3 cuts the thread, the first connecting rod 21 rotates, which drives the first drive shaft 33 to rotate on the thread cutting fixing seat 5, thereby driving the first moving blade 32 at the top of the first drive shaft 33 to rotate away from the first fixed blade 31, so that the first fixed blade 31 and the first moving blade 32 open up.

[0050] Then, the first connecting rod 21 rotates in the opposite direction, causing the first drive shaft 33 to rotate in the opposite direction on the wire cutting fixing seat 5, thereby causing the first moving blade 32 at the top of the first drive shaft 33 to rotate towards the first fixed blade 31, so that the first fixed blade 31 and the first moving blade 32 close together, cutting the surface line located between the first fixed blade 31 and the first moving blade 32.

[0051] In this embodiment, since the first drive shaft 33 passes vertically through the wire-cutting fixing seat 5, a through hole is provided on the wire-cutting fixing seat 5 for the first drive shaft 33 to pass through. In this application, the wire-cutting mechanism also includes a first bearing sleeve 34, which is disposed between the first drive shaft 33 and the through hole of the wire-cutting fixing seat 5.

[0052] Specifically, the outer ring of the first bearing sleeve 34 is fixedly connected to the outer wall of the first drive shaft 33, and the inner ring is fixedly connected to the inner wall of the through hole of the wire cutting fixing seat 5. Thus, the first drive shaft 33 and the wire cutting fixing seat 5 are rotated through the rolling element between the outer ring and the inner ring of the first bearing sleeve 34, while preventing the first drive shaft 33 from moving vertically on the wire cutting fixing seat 5, thereby ensuring the stability of the wire cutting action of the first scissor assembly 3.

[0053] In this embodiment, the second scissor assembly 4 includes a second fixed blade 41, a second drive shaft 43, and a second movable blade 42. The second fixed blade 41 is fixedly installed on the top of the crossbeam 91 of the shuttle box 9. The second drive shaft 43 passes vertically through the crossbeam 91 of the shuttle box 9 and is rotatably connected to the crossbeam 91 of the shuttle box 9. The second movable blade 42 is disposed on the top of the second drive shaft 43. The second connecting rod 22 is fixedly connected to the bottom of the second drive shaft 43.

[0054] When the second scissor assembly 4 cuts the thread, the second connecting rod 22 rotates first, which drives the second drive shaft 43 to rotate on the crossbeam 91 of the shuttle box 9. This drives the second moving blade 42 at the top of the second drive shaft 43 to rotate away from the second fixed blade 41, causing the second fixed blade 41 and the second moving blade 42 to open up.

[0055] Then, the second connecting rod 22 rotates in the opposite direction, causing the second drive shaft 43 to rotate in the opposite direction on the crossbeam 91 of the shuttle box 9. This causes the second moving blade 42 at the top of the second drive shaft 43 to rotate towards the second fixed blade 41, thereby closing the second fixed blade 41 and the second moving blade 42 and cutting the surface line between the second fixed blade 41 and the second moving blade 42.

[0056] Furthermore, in this embodiment, the wire cutting mechanism also includes a wire cutting guide seat 7, which is disposed directly below the crossbeam 91 of the shuttle box 9 and is fixedly connected to the shuttle box 9. When the second drive shaft 43 is arranged vertically, it passes through the crossbeam 91 of the shuttle box 9 and the wire cutting guide seat 7 in sequence, and the second drive shaft 43 is rotatably connected to the crossbeam 91 of the shuttle box 9 and the wire cutting guide seat 7.

[0057] The second connecting rod 22 is fixedly connected to the bottom of the second drive shaft 43. When the second drive shaft 43 is driven to rotate, the crossbeam 91 of the shuttle box 9 limits the second drive shaft 43 from above, and the wire cutting guide seat 7 limits the second drive shaft 43 from below, preventing the second drive shaft 43 from swinging during rotation, thereby ensuring the stability of the wire cutting action of the second scissor assembly 4.

[0058] In this embodiment, since the second drive shaft 43 passes vertically through the wire-cutting guide seat 7, a through hole is provided on the wire-cutting guide seat 7 for the first drive shaft 33 to pass through. In this application, the wire-cutting mechanism also includes a second bearing sleeve 44, which is disposed between the second drive shaft 43 and the through hole of the wire-cutting guide seat 7.

[0059] Specifically, the outer ring of the second bearing sleeve 44 is fixedly connected to the outer wall of the second drive shaft 43, and the inner ring is fixedly connected to the inner wall of the through hole of the wire cutting guide seat 7. Thus, the second drive shaft 43 and the wire cutting guide seat 7 are rotated through the rolling elements between the outer ring and the inner ring of the second bearing sleeve 44, while preventing the second drive shaft 43 from moving vertically on the wire cutting guide seat 7, thereby further ensuring the stability of the wire cutting action of the second scissor assembly 4.

[0060] In this embodiment, the wire cutting mechanism further includes a return spring 8, which is sleeved on the wire cutting pull rod 1, with one end abutting against the pull rod bracket 6 and the other end abutting against the wire cutting connecting rod assembly 2. Specifically, one end of the return spring 8 abuts against the pull rod bracket 6 and the other end abuts against the connecting seat 23.

[0061] When the wire cutting mechanism cuts the wire, the wire cutting lever 1 first moves laterally to one side under the action of external force, driving the connecting seat 23 to move towards the lever bracket 6. This causes the first drive shaft 33 and the second drive shaft 43 to rotate synchronously through the first link 21, the second link 22, the third link 24 and the fourth link 25, so that the first fixed blade 31 and the first moving blade 32 open, and the second fixed blade 41 and the second moving blade 42 open. At this time, the return spring 8 is in a compressed state.

[0062] After the external force applied to the thread-cutting lever 1 is removed, the elastic force of the return spring 8 restoring its own deformation pushes the connecting seat 23 to move away from the lever bracket 6. At the same time, it drives the thread-cutting lever 1 to move laterally in a straight line to the opposite side. Thus, through the first link 21, the second link 22, the third link 24, and the fourth link 25, the first drive shaft 33 and the second drive shaft 43 rotate synchronously in opposite directions, so that the first fixed blade 31 and the first moving blade 32 are closed, and the second fixed blade 41 and the second moving blade 42 are closed, realizing the thread-cutting mechanism for double-needle thread, thereby making the use of the thread-cutting mechanism simpler, more convenient, and easier to implement.

[0063] In this embodiment, taking the direction facing the front of the double-needle computerized embroidery machine as an example, the working principle of the thread-cutting mechanism is as follows: The thread-cutting lever 1 moves linearly to the right under the action of external force, causing the connecting seat 23 to move linearly to the right simultaneously. Driven by the connecting seat 23, the third connecting rod 24 drives the first connecting rod 21 to rotate counterclockwise around the central axis of the first drive shaft 33, while the fourth connecting rod 25 drives the second connecting rod 22 to rotate counterclockwise around the central axis of the second drive shaft 43. It is foreseeable that in this application, the connecting shaft between the first connecting rod 21 and the third connecting rod 24, and the connecting shaft between the fourth connecting rod 25 and the first connecting rod 21, are the same.

[0064] The first drive shaft 33 is driven to rotate counterclockwise by the first connecting rod 21, and the first drive shaft 33 drives the first moving blade 32 to rotate counterclockwise around the central axis of the first drive shaft 33, so that the first fixed blade 31 and the first moving blade 32 are separated; the second drive shaft 43 is driven to rotate counterclockwise by the second connecting rod 22, and the second moving blade 42 drives the second moving blade 42 to rotate counterclockwise around the central axis of the second drive shaft 43, so that the second fixed blade 41 and the second moving blade 42 are separated.

[0065] Then, the outer side applied to the wire-cutting lever 1 is removed, so that the connecting seat 23 and the wire-cutting lever 1 move synchronously to the left under the elastic force of the return spring 8. Driven by the connecting seat 23, the third link 24 drives the first link 21 to rotate clockwise around the central axis of the first drive shaft 33, while the fourth link 25 drives the second link 22 to rotate clockwise around the central axis of the second drive shaft 43.

[0066] The first drive shaft 33 is rotated clockwise by the first connecting rod 21, which in turn drives the first moving blade 32 to rotate clockwise around the central axis of the first drive shaft 33, causing the first fixed blade 31 and the first moving blade 32 to close and cut the surface line between the first fixed blade 31 and the first moving blade 32. The second drive shaft 43 is rotated clockwise by the second connecting rod 22, which in turn drives the second moving blade 42 to rotate clockwise around the central axis of the second drive shaft 43, causing the second fixed blade 41 and the second moving blade 42 to open and cut the surface line between the second fixed blade 41 and the second moving blade 42, thus completing the wire cutting by the wire cutting mechanism.

[0067] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A thread-cutting mechanism for a double-needle computerized embroidery machine, characterized in that: The device includes a wire-cutting lever (1), a wire-cutting connecting rod assembly (2), a first scissor assembly (3), and a second scissor assembly (4). The wire-cutting lever (1) extends laterally and can move laterally in a straight line. The first scissor assembly (3) and the second scissor assembly (4) are arranged side by side laterally. The first end of the wire-cutting connecting rod assembly (2) is fixedly connected to the wire-cutting lever (1), the second end is fixedly connected to the first scissor assembly (3), and the third end is connected to the second scissor assembly (4), so that during the laterally straight-line movement of the wire-cutting lever (1), the first scissor assembly (3) and the second scissor assembly (4) can simultaneously cut the wire.

2. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 1, characterized in that: The wire-cutting linkage assembly (2) includes a drive rod fixedly connected to the wire-cutting pull rod (1), a first connecting rod (21) fixedly connected to the first scissor assembly (3), and a second connecting rod (22) fixedly connected to the second scissor assembly (4). The first connecting rod (21) and the second connecting rod (22) are arranged in parallel and spaced apart, and both are rotatably connected to the drive rod.

3. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 2, characterized in that: The driving rod includes a connecting seat (23) fixedly connected to the wire-cutting rod (1), a third connecting rod (24) rotatably connected at one end to the connecting seat (23) and rotatably connected at the other end to the first connecting rod (21), and a fourth connecting rod (25) rotatably connected at one end to the first connecting rod (21) and rotatably connected at the other end to the second connecting rod (22).

4. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 2, characterized in that: The wire cutting mechanism also includes a wire cutting fixing seat (5) arranged parallel to and spaced from the crossbeam (91) of the shuttle box (9) in the transverse direction. The wire cutting fixing seat (5) is fixedly connected to the shuttle box (9). The first scissor assembly (3) is disposed on the wire cutting fixing seat (5), and the second scissor assembly (4) is disposed on the crossbeam (91) of the shuttle box (9).

5. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 4, characterized in that: The wire cutting mechanism further includes a pull rod bracket (6) with one end fixedly connected to the wire cutting fixing seat (5) and the other end extending away from the wire cutting fixing seat (5). The pull rod bracket (6) is provided with a collar (61) at the end extending away from the wire cutting fixing seat (5). The wire cutting pull rod (1) passes through the collar (61) laterally and is movably connected to the collar (61).

6. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 4, characterized in that: The first scissor assembly (3) includes a first fixed blade (31) fixedly installed on the top of the wire cutting fixture (5), a first drive shaft (33) that runs vertically through the wire cutting fixture (5) and is rotatably connected to the wire cutting fixture (5), and a first movable blade (32) disposed on the top of the first drive shaft (33). The first connecting rod (21) is fixedly connected to the bottom of the first drive shaft (33).

7. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 6, characterized in that: The second scissor assembly (4) includes a second fixed blade (41) fixedly installed on the top of the crossbeam (91) of the shuttle box (9), a second drive shaft (43) that runs vertically through the crossbeam (91) of the shuttle box (9) and is rotatably connected to the crossbeam (91) of the shuttle box (9), and a second movable blade (42) disposed on the top of the second drive shaft (43). The second connecting rod (22) is fixedly connected to the bottom of the second drive shaft (43).

8. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 7, characterized in that: The wire cutting mechanism also includes a wire cutting guide seat (7) located directly below the crossbeam (91) of the shuttle box (9) and fixedly connected to the shuttle box (9). The second drive shaft (43) passes through the crossbeam (91) of the shuttle box (9) and the wire cutting guide seat (7) in a vertical direction, and is rotatably connected to the crossbeam (91) of the shuttle box (9) and the wire cutting guide seat (7).

9. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 5, characterized in that: The wire cutting mechanism also includes a return spring (8) sleeved on the wire cutting pull rod (1), one end of the return spring (8) abutting against the pull rod bracket (6) and the other end abutting against the wire cutting connecting rod assembly (2).

10. The thread-cutting mechanism of a double-needle computerized embroidery machine as described in claim 8, characterized in that: The wire cutting mechanism further includes a first bearing sleeve (34) disposed between the first drive shaft (33) and the wire cutting fixing seat (5), and a second bearing sleeve (44) disposed between the second drive shaft (43) and the wire cutting guide seat (7).

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