Towel thread loosening mechanism for embroidery machine and embroidery machine

Abstract

The invention relates to a towel thread loosening mechanism for an embroidery machine and the embroidery machine. The towel thread loosening mechanism comprises a thread loosening motor assembly, a towel thread clamping device and a thread shaft. The thread loosening motor assembly and the thread spool are installed in a split mode, the thread loosening motor assembly is located below the thread spool and is in transmission connection with the thread spool, the thread spool is sleeved with a transmission cam, and the transmission cam is used for triggering the towel thread clamping device to loosen threads when the thread loosening motor assembly drives the thread spool to rotate. According to the embodiment of the invention, the thread loosening motor assembly and the thread spool are arranged in the vertical direction, the transverse driving force of the thread loosening motor assembly is transmitted to the thread spool through the vertical transmission structure, and the transmission cam is driven to rotate through the thread spool, so that the occupied transverse space is greatly shortened, and the small-sized assembly of embroidery machine equipment is facilitated.

Description

Technical Field

[0001] This disclosure relates to the field of towel loosening technology for embroidery machines, and more specifically, to a towel loosening mechanism for embroidery machines and embroidery machines. Background Technology

[0002] Towel embroidery is a special embroidery technique that creates a soft, three-dimensional, terry, or velvety effect on fabric. It is usually done by a towel embroidery machine or a towel embroidery head on a mixed embroidery machine.

[0003] In some related technologies, towel embroidery machines typically have a motor drive assembly on the side of the frame to drive the thread clamp to release the thread. This laterally positioned motor drive assembly lengthens the frame and occupies more lateral space. Summary of the Invention

[0004] Embodiments of this disclosure provide a towel unwinding mechanism for an embroidery machine.

[0005] In a first aspect of this disclosure, a towel thread loosening mechanism for an embroidery machine is provided. The towel thread loosening mechanism includes a thread loosening motor assembly, a towel thread clamp, and a spool; the thread loosening motor assembly is separately mounted from the spool, located below the spool and connected to it in a driving connection; a drive cam is fitted onto the spool, the drive cam being used to trigger the towel thread clamp to loosen the thread when the thread loosening motor assembly drives the spool to rotate.

[0006] In some embodiments, the loosening motor assembly includes a loosening motor and a loosening transmission box, with the loosening transmission box and the loosening motor arranged horizontally side by side, and the loosening motor driving the bobbin to rotate via the loosening transmission box.

[0007] In some embodiments, the spool drive box is connected to the spool drive via a synchronous belt.

[0008] In some embodiments, the wire loosening transmission box includes a wire loosening drive shaft, a wire loosening drive gear, a wire loosening driven shaft, a wire loosening driven gear, and a wire loosening synchronous pulley; the wire loosening drive shaft is located below the wire loosening driven shaft, and the wire loosening motor is used to drive the wire loosening drive shaft to rotate; the wire loosening drive shaft is fitted with the wire loosening drive gear, and the wire loosening driven shaft is fitted with the wire loosening driven gear and the wire loosening synchronous pulley; the wire loosening drive gear meshes with the wire loosening driven gear, and the wire loosening synchronous pulley is connected to the spool via a synchronous belt.

[0009] In some embodiments, the loosening drive shaft and the motor shaft of the loosening motor are coaxially connected via a clamp-type connecting sleeve.

[0010] In some embodiments, the towel cord clamp includes multiple cord clamping assemblies and a cord loosening trigger; a transmission cam is used to trigger the cord loosening trigger to act on the cord clamping assemblies when the cord loosening motor assembly drives the spool to rotate, so as to loosen the cord.

[0011] In a second aspect of this disclosure, an embroidery machine is provided. This embroidery machine includes the towel unwinding mechanism for an embroidery machine described in the first aspect above.

[0012] In some embodiments, the spool is positioned across the head of the embroidery machine and on the back side of the towel thread clamp.

[0013] In some embodiments, the device further includes a plurality of towel clamps; a plurality of transmission cams are sleeved on the spool, each transmission cam being used to trigger the towel clamps corresponding to the transmission cams to loosen the thread when the spool is rotated by the thread loosening motor assembly.

[0014] In some embodiments, the spools are arranged across multiple heads of the embroidery machine and are located on the back side of the towel thread clamp.

[0015] It should be understood that the description in the Summary of the Invention section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0016] The above and other objects, features, and advantages of embodiments of the present disclosure will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated in the drawings by way of example and not limitation.

[0017] Figure 1 A front view of a towel unwinding mechanism for an embroidery machine according to an embodiment of the present disclosure is shown;

[0018] Figure 2 A perspective view of a towel unwinding mechanism for an embroidery machine according to an embodiment of the present disclosure is shown.

[0019] Figure 3 A perspective structural view of a loose-wire motor assembly according to an embodiment of the present disclosure is shown;

[0020] Figure 4 A perspective structural diagram of a towel clamp according to an embodiment of the present disclosure is shown;

[0021] Figure 5 A perspective view of a multi-head embroidery machine according to an embodiment of the present disclosure is shown, in which a thread-loosening motor assembly is installed to drive multiple towel thread clamps to loosen the thread.

[0022] Figure 6 A front view of a multi-head embroidery machine according to an embodiment of the present disclosure is shown, in which a thread-loosening motor assembly drives multiple towel thread clamps to loosen the thread.

[0023] In the various figures, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation

[0024] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0025] The term "comprising" and its variations as used herein signify an open-ended inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". Terms such as "upper", "lower", "front", and "rear", indicating placement or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are used only for the purpose of describing the principles of this disclosure, and are not intended to indicate or imply that the elements referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting this disclosure.

[0026] As mentioned earlier, towel embroidery machines typically have a motor drive assembly on the side of the frame to drive the thread tensioner to release the thread. For single-head towel embroidery machines, the motor drive assembly is mounted horizontally on the side of the frame, occupying a significant amount of factory space. For multi-head towel embroidery machines, there are generally two motor drive assemblies, both located on the side of the frame, connected by a transmission structure. This not only lengthens the frame and occupies more lateral space, but also requires more components to be installed on the embroidery machine. To avoid interference between the machine heads, a large distance is often left between adjacent machine heads, thus limiting the number of machine heads that can be installed on a single embroidery machine.

[0027] In some related technologies, two thread-releasing devices are installed on one side of the frame, connected by a thread-releasing drive shaft. Each thread-releasing device includes a thread-releasing motor, a thread-releasing motor base, a thread-releasing pinion, a thread-releasing coupling bearing, and a thread-releasing large gear. The thread-releasing motor shaft passes through the thread-releasing motor base and is fitted with the thread-releasing pinion. The thread-releasing drive shaft also passes through the thread-releasing motor base and is fitted with the thread-releasing large gear, which meshes with the thread-releasing pinion. Since both the thread-releasing device and the thread-releasing drive shaft are assembled by the thread-releasing motor base, the overall structure is relatively large. This makes it difficult to install between multiple machine heads in limited space without interfering with the towel thread clamp and shuttle frame. Therefore, it is usually installed on the side of the frame, but this increases the frame length. If installed between the machine heads, the spacing between adjacent machine heads needs to be increased, which would not meet the assembly requirements of a small-head rectangular embroidery machine.

[0028] In response to this, according to the embodiments of this disclosure, a towel thread loosening solution for an embroidery machine is provided. The thread loosening motor assembly is placed below the thread spool and assembled separately in a vertical arrangement. The thread loosening motor assembly drives the thread spool to rotate, and the transmission cam sleeved on the thread spool rotates accordingly to trigger the towel thread clamp.

[0029] In this way, the thread-releasing motor assembly and the spool are spatially independent, arranged with the spool on top and the thread-releasing motor assembly below, which minimizes the use of lateral space. For single-head towel embroidery machines, this facilitates miniaturization and reduces factory space requirements. For multi-head towel embroidery machines, it allows for compact arrangement within the machine's limited space, without interfering with the towel thread clamp and shuttle frame, thus meeting the assembly requirements of small-head rectangular embroidery machines.

[0030] Figure 1 A front view is shown of a towel unwinding mechanism 100 for an embroidery machine according to an embodiment of the present disclosure. Figure 1 As shown, the towel loosening mechanism 100 includes a loosening motor assembly 120, a towel clamp 110, and a spool 120-2. The spool 120-2 is positioned on the back side of the towel clamp 110, and the loosening motor assembly 120 is positioned on the back side of the towel clamp 110 and below the spool 120-2. A transmission cam (not visible in the figure, located on the back side of the towel clamp 110) is fitted onto the spool 120-2. The transmission cam is used to trigger the towel clamp 110 to loosen the towel when the spool 120-2 is rotated by the loosening motor assembly 120. In some embodiments, the spool 120-2 is arranged in the transverse direction of the frame and is mounted on the middle beam of the wire cutting box below the machine head via a mounting bracket. The loosening motor assembly 120 is mounted on the middle beam of the wire cutting box below the machine head via a motor mount.

[0031] like Figure 1 As shown, the wire loosening motor assembly 120 includes a wire loosening motor 120-1 and a wire loosening transmission box 120-9. The wire loosening motor 120-1 and the wire loosening transmission box 120-9 are arranged horizontally side-by-side. The wire loosening motor 120-1 is connected to the bobbin 120-2 via the wire loosening transmission box 120-9. In some embodiments, the wire loosening transmission box 120-9 and the bobbin 120-2 are connected via a timing belt 120-5. In one example, the wire loosening transmission box 120-9 includes a wire loosening timing pulley, and a bobbin timing pulley is fitted onto the bobbin 120-2. The timing belt 120-5 connects the wire loosening timing pulley and the bobbin timing pulley, so that when the wire loosening motor 120-1 drives the wire loosening timing pulley to rotate, the driving force is transmitted to the bobbin 120-2, which in turn causes the transmission cam on the bobbin 120-2 to rotate, triggering the wire clamp 120 to loosen the wire.

[0032] In this manner, the thread-releasing motor and the thread-releasing transmission box are arranged horizontally side by side, while the thread spool and the thread-releasing motor assembly are arranged vertically. The thread spool and the thread-releasing motor assembly are each installed independently, and a synchronous belt is used to achieve the transmission connection between them. In this way, the overall structure of the towel thread-releasing mechanism is distributed across two installation spaces, with the driving force transmitted horizontally to the top. This achieves stable thread loosening while allowing for a compact arrangement on the embroidery machine, reducing the horizontal space occupied. The synchronous belt transmission connection provides significant flexibility in the arrangement of the thread-releasing motor assembly and the thread spool, allowing for spatial arrangement that avoids interference with the embroidery machine and achieves a compact assembly.

[0033] Figure 2 A perspective structural diagram is shown of a towel unwinding mechanism 100 for an embroidery machine according to an embodiment of the present disclosure. Figure 2 As shown, the transmission cam 120-3 on the bobbin 120-2 is used to trigger multiple clamping assemblies 104 on the towel clamp 110 to loosen the wire. Multiple clamping assemblies are arranged on the clamping body 102 of the towel clamp 110. A loosening trigger is provided on the clamping body 102. When the transmission cam 120-3 rotates, it can push the loosening trigger towards the clamping assembly 104 to loosen the wire. In some embodiments, the loosening trigger can be a spring sheet. The spring sheet is pushed by the transmission cam and deforms, thereby triggering the clamping assembly to loosen the wire. Once the spring sheet is no longer pushed by the transmission cam, it returns to its original position before deformation, and the spring sheet no longer acts on the clamping assembly, at which point the clamping assembly clamps its surface. In some embodiments, the loosening trigger can be a loosening top plate 106 (as shown in the figure). The loosening top plate 106 is connected to the clamping body 102 via a pin shaft, and the loosening top plate 106 can rotate relative to the clamping body 102. When the loosening top plate 106 rotates toward the clamping assembly 104, the loosening top plate 106 supports the clamping assembly 104, thereby loosening the thread. Once the loosening top plate 106 returns to its original position, it no longer supports the clamping assembly 104, and the clamping assembly 104 clamps the embroidery thread.

[0034] Figure 3 A perspective structural view of a loose-wire motor assembly 120 according to an embodiment of the present disclosure is shown. Figure 3As shown, the loosening motor assembly 120 includes a loosening motor 120-1 and a loosening drive gear 120-6, a loosening driven gear 120-7, a loosening synchronous pulley 120-4, a loosening drive shaft, and a loosening driven shaft, all integrated within a loosening transmission box 120-9. The loosening drive gear 120-6 meshes with the loosening driven gear 120-7. The loosening synchronous pulley 120-4 is fitted onto the loosening driven shaft and is connected to the spool synchronous pulley via a synchronous belt. The motor shaft of the loosening motor 120-1 is horizontally positioned and coaxially connected to the loosening drive shaft 120-6. To improve the synchronicity of the motor shaft driving the loosening drive shaft, the motor shaft is coaxially connected to the loosening drive shaft via a clamp-type connecting sleeve 120-8. This ensures high coaxiality between the two shafts, reducing vibration and noise during operation.

[0035] like Figure 3 As shown, the wire loosening drive shaft is located below the wire loosening driven shaft, and both ends of the wire loosening drive shaft and the wire loosening driven shaft are fixed to the wire loosening transmission box. In this way, the wire loosening motor 120-1 transmits the driving force laterally to the wire loosening drive gear, then upwards to the wire loosening drive gear 120-7 and the wire loosening synchronous pulley 120-4, and finally upwards to the spool via the synchronous belt. This allows for stable rotation of the spool with minimal space occupation, which in turn drives the towel clamp to loosen the wire via the transmission cam on the spool.

[0036] Figure 4 A perspective structural diagram of a towel clamp 110 according to an embodiment of the present disclosure is shown. Figure 4 As shown, the towel thread clamp 110 includes a thread clamping body 102, a plurality of thread clamping assemblies 104 disposed on the thread clamping body 102, and a thread loosening top plate 106. The thread clamping body 102 includes a thread clamping frame 102-1, on which the plurality of thread clamping assemblies 104 are arranged laterally. The thread clamping body 102 also includes a rear cover 102-2 for covering part of the back side of the thread clamping body 102. The thread loosening top plate 106, as a thread loosening trigger, is disposed on the back side of the frame 102-1 above the rear cover 102-2. In some examples, the thread loosening top plate 106 abuts against the thread loosening push rod 104-1 of the thread clamping assembly 104, and the thread loosening push rod 104-1 pushes forward to prevent the embroidery thread from being clamped. In addition, the thread loosening top plate 106 can also rotate away from the thread clamping assembly 104. In one example, the pin connecting the loosening top plate 106 to the frame 102-1 has a torsion spring, which allows the loosening top plate 106 to rotate away from the thread clamping assembly 104 without being driven, rotating to the original position held by the torsion spring, that is, the loosening top plate 106 no longer acts on the thread clamping assembly 104. At this time, the thread clamping assembly 104 switches from the loosening state of the embroidery thread to the clamping state of the embroidery thread.

[0037] In some embodiments, the wire clamping assembly 104 includes a wire loosening push rod 104-1, a first wire clamping plate 104-2, a second wire clamping plate 104-3, a wire loosening plate 104-4, a wire clamping nut 104-5, and a spring (not visible in the figure) disposed between the wire loosening plate 104-4 and the wire clamping nut 104-5. The wire loosening push rod 104-1 can extend and retract within the wire loosening screw 104-6, which is fixed to the frame 102-1 by passing through the frame 102-1 from the back side. A first wire clamping plate 104-2, a second wire clamping plate 104-3, a wire loosening plate 104-4, and a wire clamping nut 104-5 are sequentially fitted onto the wire loosening screw 104-6, with these components located on the front side of the frame 102-1. The embroidery thread is placed between the first wire clamping plate 104-2 and the second wire clamping plate 104-3. Because a compressed spring is provided between the wire loosening plate 104-4 and the wire clamping nut 104-5, the wire loosening plate 104-4 is pressed against one side of the second wire clamping plate 104-3. Correspondingly, the first wire clamping plate 104-2 is pressed against the front side of the frame 102-1 by the second wire clamping plate 104-3. When the portion of the loosening rod 104-1 located on the back side of the frame 102-1 is abutted, the loosening rod 104-1 pushes against the front side of the loosening screw 104-6, pushing against the loosening piece 104-4. For example, the loosening piece can be an annular piece with a connecting portion spanning the diameter direction. The pushing action of the loosening rod 104-1 on the connecting portion of the annular piece further compresses the spring between the loosening piece 104-4 and the clamping nut 104-5. At this time, the loosening piece 104-4 moves away from the second clamping piece 104-3, that is, the second clamping piece 104-3 is no longer clamped with the first clamping piece 104-2, and the embroidery thread between them is in a relaxed state. Once the loosening rod 104-1 is no longer abutted, the loosening rod 104-1 no longer pushes the loosening piece 104-4 forward, and the first clamping piece 104-2 and the second clamping piece 104-3 clamp together, and the embroidery thread between them is in a clamped state.

[0038] In one or more of the above embodiments, the towel thread clamp 110 further includes a thread guide 112, which has a plurality of thread holes 112-1, each thread hole 112-1 corresponding to a thread clamping assembly 104. The thread guide 112 is located above the thread clamping assembly 104 and is used to guide the embroidery thread to the thread clamping assembly 104 so that it can be clamped by the thread clamping assembly 104.

[0039] In one or more of the above embodiments, the towel thread clamp 110 further includes a plurality of thread guide rollers 108, each thread guide roller 108 corresponding to a thread clamping assembly 104. The thread guide rollers 108 are located below the thread clamping assembly 104 and are used to guide the embroidery thread coming out of the thread clamping assembly 104, so that the thread path is stable and controllable.

[0040] Figure 5 A perspective view of a multi-head embroidery machine according to an embodiment of the present disclosure is shown, showing a thread-loosening motor assembly driving multiple towel thread clamps to loosen the thread. Figure 6 This diagram shows a front view of a multi-head embroidery machine according to an embodiment of the present disclosure, equipped with a thread-releasing motor assembly that drives multiple towel thread clamps to release the thread. Typically, each head of a multi-head embroidery machine corresponds to a needle bar, presser foot, circular shuttle, thread trimming device, towel thread clamp, and other structures. Figure 5 , Figure 6 The diagram shows a portion of the structure of an embroidery machine. The towel thread clamp 110 is located in front of the thread-cutting beam L, and above the thread-cutting box beam L, there are often corresponding shuttles and thread-cutting devices (not shown in the diagram) for each machine head. Figure 5 , Figure 6 As shown, a loosening motor assembly 120 can drive the spools 120-2 spanning multiple heads to rotate, thereby enabling multiple towel clamps 110 to loosen the thread synchronously (only two towel clamps 110 are shown in the figure as an example, and there are two corresponding drive cams 120-3; in reality, there can be multiple towel clamps, and each towel clamp has its corresponding drive cam).

[0041] like Figure 5 , Figure 6 As shown, the spool 102-2 is positioned on the back side of multiple towel clamps 110, and the thread loosening motor assembly 120 is located below one of the cutting heads or below two adjacent cutting heads, on the rear lower side of the back side of the towel clamps 110, and below the spool 120-2. In some embodiments, the spool 120-2 is mounted on the middle beam of the thread cutting box via a mounting bracket and is installed close to the shuttle frame. The thread loosening motor assembly 120 is mounted on the middle beam of the thread cutting box via a motor mount and is installed away from the shuttle frame.

[0042] In some embodiments, the loosening motor assembly 120 includes a loosening motor and a loosening drive gear, a loosening driven gear, a loosening timing pulley, a loosening drive shaft, and a loosening driven shaft integrated within a loosening transmission housing. The loosening drive gear meshes with the loosening driven gear, the loosening timing pulley and the loosening driven gear are sleeved on the loosening driven shaft, and the loosening timing pulley is connected to the timing pulley on the bobbin via a timing belt. The motor shaft of the loosening motor is coaxially connected to the loosening drive shaft. In some examples, see... Figure 3 In the example layout, the loosening drive shaft is located below the loosening driven shaft. Both ends of the loosening drive shaft and the loosening driven shaft are fixed to the loosening transmission box. The motor shaft is coaxially connected to the loosening drive shaft via a clamp-type connecting sleeve 1. In this way, the loosening motor transmits the driving force laterally to the loosening drive gear, then upwards to the loosening drive gear and the loosening timing pulley, and finally upwards to the bobbin via the timing belt. This allows for stable rotation of the bobbin with minimal space occupation, and then multiple transmission cams on the bobbin drive their respective towel clamps to loosen the thread synchronously.

[0043] This method, by separately installing the spool 120-2 and the wire loosening motor assembly 120 in different spaces and arranging them vertically, reduces the lateral space occupied. Furthermore, utilizing a drive belt to achieve the transmission relationship between the spool and the wire loosening motor assembly allows for more flexible spatial arrangement of both components. Specifically, as... Figure 6 As shown, the thread loosening motor assembly 120 is arranged between two adjacent towel thread clamps 110. The spacing between the towel thread clamps is small, and the thread loosening motor and thread loosening transmission box, arranged side by side, are located below the thread clamping assembly 104 of the towel thread clamp 110, allowing for compact assembly within the limited space of a multi-head embroidery machine. Furthermore, no more complex mechanical structure is needed for the transmission connection between the spool 120-2 and the thread loosening transmission box, avoiding interference with the back structure of the towel thread clamps. Because the timing belt is a flexible transmission component, it can be flexibly installed in a limited space by adjusting the angle between the timing belt connecting the spool and the thread loosening transmission box, and its length can be adjusted to adapt to complex spaces. Figure 5 As shown, the synchronous belt 120-5 slopes inward and downward from its connection point with the bobbin 120-2, and then connects to the bobbin pulley in the bobbin release transmission box. This is equivalent to retracting the bobbin release motor assembly 120 inward and installing it below the beam L in the bobbin cutter box, making full use of the space below the beam L and avoiding interference with the back structure of the towel clamp 110. Furthermore, the position where the synchronous belt 120-5 connects to the bobbin 120-2 is located between the positions where the two transmission cams 120-3 are mounted on the bobbin 120-2, combined with... Figure 6 From the frontal view, neither the position of the drive cam 120-3 nor the timing belt connecting spool 120-2 is visible. This layout is not only aesthetically pleasing, but also allows the driving force transmitted from the timing belt to the spool to be distributed to both sides, ensuring that multiple towel thread clamps are stably driven and synchronously released without affecting the arrangement of small-pitch machine heads. It is suitable for small-head rectangular embroidery machines (e.g., small-head rectangular towel embroidery machines or small-head rectangular mixed embroidery machines).

[0044] In some implementations, the towel cord clamp includes a cord clamping body, a plurality of cord clamping assemblies disposed on the cord clamping body, and a cord release trigger. A drive cam is used to trigger the cord release trigger to actuate the cord clamping assemblies when the cord release motor assembly drives the spool to rotate, thereby releasing the cord. In some examples, see... Figure 4 Example settings.

[0045] While several specific implementation details are included in the foregoing discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single implementation. Conversely, various features described in the context of a single implementation may also be implemented individually or in any suitable sub-combination in multiple implementations.

[0046] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0047] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A towel threading mechanism (100) for an embroidery machine, characterized in that, The device comprises a thread loosening motor assembly (120), a towel thread clamping device (110), and a thread spool (120-2). The thread loosening motor assembly (120) is separately installed from the thread spool (120-2), and is located below the thread spool (120-2) and is in transmission connection with the thread spool (120-2). A transmission cam (120-3) is sleeved on the thread spool (120-2), and the transmission cam (120-3) is used to trigger the towel thread clamping device (110) to loosen the thread when the thread loosening motor assembly (120) drives the thread spool (120-2) to rotate.

2. The towel threading mechanism (100) for the embroidery machine according to claim 1 characterized in that, The thread loosening motor assembly (120) comprises a thread loosening motor (120-1) and a thread loosening transmission box (120-9). The thread loosening transmission box (120-9) is arranged transversely and side by side with the thread loosening motor (120-1), and the thread loosening motor (120-1) drives the thread spool (120-2) to rotate through the thread loosening transmission box (120-9).

3. The towel threading mechanism (100) for the embroidery machine according to claim 2, characterized in that, The thread loosening transmission box (120-9) is in transmission connection with the thread spool (120-2) through a synchronous belt (120-5).

4. The towel stretcher mechanism (100) for the embroidery machine according to claim 2, characterized in that, The thread loosening transmission box (120-9) comprises a thread loosening driving shaft, a thread loosening driving gear (120-6), a thread loosening driven shaft, a thread loosening driven gear (120-7), and a thread loosening synchronous pulley (120-4). The thread loosening driving shaft is located below the thread loosening driven shaft, and the thread loosening motor (120-1) is used to drive the thread loosening driving shaft to rotate. The thread loosening driving shaft is sleeved with the thread loosening driving gear (120-6), the thread loosening driven shaft is sleeved with the thread loosening driven gear (120-7) and the thread loosening synchronous pulley (120-4). The thread loosening driving gear (120-6) is in meshing connection with the thread loosening driven gear (120-7), and the thread loosening synchronous pulley (120-4) is in transmission connection with the thread spool (120-2) through the synchronous belt (120-5).

5. The towel stretcher mechanism (100) for the embroidery machine according to claim 4, characterized in that, The thread loosening driving shaft is coaxially connected with the motor shaft of the thread loosening motor (120-1) through a clamp type connecting sleeve (120-8).

6. The towel stretcher mechanism (100) for the embroidery machine according to claim 1 characterized in that, The towel thread clamping device (110) comprises a plurality of thread clamping assemblies (104) and a thread loosening trigger. The transmission cam (120-3) is used to trigger the thread loosening trigger to act on the thread clamping assemblies (104) to loosen the thread when the thread loosening motor assembly (120) drives the thread spool (120-2) to rotate.

7. An embroidery machine, characterized in that The device comprises a towel thread loosening mechanism (100) for an embroidery machine according to any one of claims 1 to 6.

8. A machine according to claim 7, characterised in that, The thread spool (120-2) is arranged across the head of the embroidery machine and is located at the back side of the towel thread clamping device (110).

9. The machine according to claim 7, characterized in that, A plurality of the towel thread clamping devices (110) are further included. A plurality of transmission cams (120-3) are sleeved on the thread spool (120-2), and each transmission cam (120-3) is used to trigger the towel thread clamping device (110) corresponding to the transmission cam (120-3) to loosen the thread when the thread loosening motor assembly (120) drives the thread spool (120-2) to rotate.

10. A machine according to claim 9, characterised in that, The spool (120-2) is disposed across a plurality of heads of the embroidery machine and is located at a back side of the towel thread clipper (110).

Images