Jumping needle mechanism of taping embroidery

Abstract

The utility model relates to a skipping stitch mechanism for taping embroidery. Relates to the technical field of embroidery machines. The device specifically comprises a needle rod, a needle rod driving assembly, a needle skipping assembly and a needle rod return assembly, the needle rod driving assembly is matched with the needle rod and used for driving the needle rod to do reciprocating lifting motion in the vertical direction, the needle skipping assembly is used for driving the needle rod driving assembly to rotate, and the needle rod driving assembly is disengaged from the needle rod in the rotating process. The needle rod return assembly drives the needle rod to move to the needle feeding position, so that the embroidery needle on the needle rod is suspended above the cloth. The needle skipping assembly drives the needle rod driving assembly to be separated from the needle rod, and the needle rod return assembly drives the needle rod to move to an upper needle position, so that the embroidery needle can be accurately suspended above cloth, the embroidery needle can be conveniently transferred among a plurality of embroidery point positions, and the embroidery needle can conveniently drive an embroidery thread to carry out long-stitch embroidery; therefore, the taping embroidery equipment is suitable for embroidery processes such as plain embroidery, taping embroidery and rope embroidery, and is higher in practicability and wider in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery machines, in particular to a skipping stitch mechanism for coiling embroidery. Background Art

[0002] Tape embroidery in computerized embroidery machines combines cording and tape embroidery. Conventional tape embroidery equipment typically consists of a machine housing, needle bar, needle bar drive, feeder, presser foot, and thread take-up lever. As the range of embroidery machine products continues to expand, consumer demands for more diverse embroidery products are also increasing. The market is demanding the integration of embroidery machine techniques, including flat embroidery, tape embroidery, and cording embroidery.

[0003] Existing tape embroidery equipment, when used in flat embroidery techniques, typically achieves a skipped stitch function by stopping the needle bar drive unit. Since the needle bar drive unit drives the needle bar in high-speed reciprocating motion during the embroidery process, simply stopping the needle bar drive unit makes it difficult to ensure that the embroidery needle remains accurately above the fabric. During this time, the embroidery frame moves the fabric to the next embroidery point. Skipping a stitch can cause the needle to break and potentially damage the fabric, thus affecting the embroidery work. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the above-mentioned prior art and provide a skipping needle mechanism for tape embroidery, which can realize the accurate hovering of the embroidery needle on the needle bar above the fabric, thereby, on the one hand, realizing the jumping of the embroidery needle between embroidery points; on the other hand, it can enable the embroidery needle to drive the embroidery thread to jump a long distance, forming a long needle gap, thereby making the tape embroidery equipment suitable for embroidery techniques such as flat embroidery, tape embroidery, and rope embroidery, and having stronger practicality and wider application range.

[0005] The utility model proposes a skipping stitch mechanism for tape embroidery, comprising a needle bar, a needle bar driving assembly, a skipping stitch assembly and a needle bar return assembly. The needle bar driving assembly cooperates with the needle bar to drive the needle bar to perform a reciprocating lifting and lowering motion in a vertical direction. The skipping stitch assembly is used to drive the needle bar driving assembly to rotate. During the rotation of the needle bar driving assembly, the needle bar is disengaged from the needle bar. The needle bar return assembly drives the needle bar to move to the upper needle position, so that the embroidery needle on the needle bar is suspended above the fabric.

[0006] Furthermore, the needle bar drive assembly includes a lifting drive member arranged in the frame, a driver cooperating with the needle bar, and a first guide rod arranged in the vertical direction in the frame, the first guide rod passes through the driver, the lifting drive member is connected to the driver to drive the driver to lift and lower along the first guide rod, and the driver is used to drive the needle bar to lift and lower along the vertical direction.

[0007] Further, a limiting block is provided on the needle bar. The driver includes a transmission frame connected to the lifting driving member, a transmission seat rotatably connected to the transmission frame, and a rotary torsion spring with one end connected to the transmission frame and the other end connected to the transmission seat. A limiting groove cooperating with the limiting block is provided on the transmission seat. The stitch skipping assembly is used to drive the transmission seat to rotate. During the rotation of the transmission seat, the limiting block is disengaged from the limiting groove, and the rotary torsion spring is used to drive the transmission seat to rotate in the reverse direction.

[0008] Further, a push rod is provided on the needle bar driving assembly. The stitch skipping assembly includes a driving motor installed on the machine frame and a swing arm connected to the driving motor. A roller is provided on the swing arm. The driving motor is used to drive the swing arm to swing, and the roller acts on the push rod to drive the needle bar driving assembly to rotate.

[0009] Further, the stitch skipping assembly further includes a motor mounting plate for mounting the driving motor on the machine frame. One end of the driving motor is located inside the machine frame and the other end is located outside the machine frame. The swing arm is connected to the end of the driving motor located inside the machine frame.

[0010] Further, the stitch skipping assembly further includes a return torsion spring sleeved outside the rotating shaft of the driving motor. One end of the return torsion spring is fixed on the driving motor and the other end is fixed on the swing arm to drive the swing arm to reset.

[0011] Further, the stitch skipping assembly further includes a first limiting post provided on the driving motor, and the first limiting post is used to limit the swing angle of the swing arm on one side.

[0012] Further, the stitch skipping assembly further includes a transmission rod connected to the rotating shaft of the driving motor, a locking post provided on the transmission rod, and a locking rod rotatably connected to the driving motor. A locking groove cooperating with the locking post is provided on the locking rod.

[0013] Further, the stitch skipping assembly further includes two second limiting posts provided on the driving motor and a third limiting post provided on the driving motor. The two second limiting posts are respectively arranged on both sides of the transmission rod to limit the rotation angle of the transmission rod on both sides, and the third limiting post is used to limit the rotation angle of the locking rod on one side.

[0014] Further, the needle bar return assembly includes a second guide rod vertically arranged in the machine frame, a needle bar connecting piece with one end slidably connected to the second guide rod and the other end fixedly connected to the needle bar, and a return spring sleeved on the second guide rod. One end of the return spring is fixed and the other end abuts against the needle bar connecting piece to drive the needle bar connecting piece to rise along the second guide rod.

[0015] The jump needle mechanism of the disk and tape embroidery proposed by the utility model has the following beneficial effects:

[0016] (1) When the jump needle component of this jump needle mechanism operates, the driving needle bar driving component is disengaged from the needle bar, and the needle bar return component drives the needle bar to move to the upper needle position, so that the embroidery needle accurately hovers above the fabric. This not only facilitates the transfer of the embroidery needle between multiple embroidery points, but also facilitates the embroidery needle to drive the embroidery thread for long-stitch embroidery. Furthermore, the disk and tape embroidery device is applicable to embroidery processes such as flat embroidery, tape embroidery, and rope embroidery, with stronger practicability and a wider scope of application;

[0017] (2) The needle bar driving component of this jump needle mechanism includes a lifting driving member, a driver, and a first guide rod. The lifting driving member is arranged in the frame and is connected to the driver. The first guide rod is arranged vertically in the frame and penetrates through the driver. Therefore, when the lifting driving member operates, it can drive the driver to lift along the first guide rod. The driver cooperates with the needle bar. Therefore, when the driver lifts along the first guide rod, it can drive the needle bar to synchronously lift and lower along the vertical direction;

[0018] (3) The jump needle component of this jump needle mechanism no longer acts on the transmission seat. Under the elastic force of the rotary torsion spring, the transmission seat rotates in the reverse direction until the limiting block is inserted into and cooperates with the limiting groove, so that the lifting driving member can drive the needle bar to perform high-speed reciprocating lifting motion again to embroider the next embroidery point;

[0019] (4) The jump needle component of this jump needle mechanism includes a driving motor and a swing arm. The swing arm is connected to the rotating shaft of the driving motor. Therefore, when the rotating shaft of the driving motor rotates by a certain angle, it can drive the swing arm to swing by a certain angle. A push rod is arranged on the transmission seat, and a roller is arranged on the swing arm. When the rotating shaft of the second driving motor rotates to drive the swing arm to swing, through the rolling contact between the roller and the push rod, the transmission seat is pushed to rotate on the first guide rod, so that the limiting groove is disengaged from the limiting block;

[0020] (5) A reset torsion spring is sleeved outside the rotating shaft of the driving motor of this jump needle mechanism, and one end of the reset torsion spring is fixed on the driving motor, and the other end is fixed on the swing arm. Through the elastic force of the reset torsion spring to restore its own deformation, the swing arm and the rotating shaft of the driving motor are pushed to rotate in the reverse direction, so that the swing arm is reset and the energy consumption is reduced;

[0021] (6) The jump needle component of this jump needle mechanism further includes a transmission rod, a locking column, and a locking rod. The transmission rod is fixedly connected to the rotating shaft of the driving motor, the locking rod is rotatably connected to the driving motor, the locking column is arranged on the transmission rod, and a locking groove is arranged on the locking rod. By the cooperation of the locking groove and the locking column, the transmission rod and the rotating shaft of the driving motor are locked, so that the swing arm and the transmission component are locked, and thus the use of this jump needle mechanism is made simpler and more efficient;

[0022] (7) The needle bar return assembly of this needle jumping mechanism includes a second guide rod, a needle bar connecting piece, and a return spring. The second guide rod is arranged vertically in the machine frame. One end of the needle bar connecting piece is fixedly connected to the needle bar, and the other end is slidably connected to the second guide rod. The return spring is sleeved on the guide rod. The needle bar connecting piece is driven to move vertically on the second guide rod by the elastic force of the return spring, thereby driving the needle bar to move vertically upward synchronously, making the needle bar automatically move to the upper needle position, and further making the embroidery needle hover above the fabric. Brief Description of the Drawings

[0023] The drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, like reference numerals are used to represent like elements.

[0024] Figure 1 It is a schematic structural diagram of a needle jumping mechanism for disk belt embroidery in the machine frame according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the cooperation between the needle bar driving assembly and the needle bar of a needle jumping mechanism for disk belt embroidery according to an embodiment of the present invention;

[0026] Figure 3 It is a schematic structural diagram of a driver of a needle jumping mechanism for disk belt embroidery according to an embodiment of the present invention;

[0027] Figure 4 It is a schematic structural diagram of the inner side of a needle jumping assembly of a needle jumping mechanism for disk belt embroidery according to an embodiment of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the outer side of a needle jumping assembly of a needle jumping mechanism for disk belt embroidery according to an embodiment of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the connection between the needle bar return assembly and the needle bar of a needle jumping mechanism for disk belt embroidery according to an embodiment of the present invention.

[0030] In the figure: 1. Needle bar; 11. Limit block; 2. Needle bar driving assembly; 21. Lifting driving part; 22. Driver; 221. Transmission frame; 222. Transmission seat; 2221. Limit groove; 2222. Push rod; 223. Rotary torsion spring; 23. First guide rod; 3. Needle jumping assembly; 31. Driving motor; 32. Swing arm; 321. Roller; 33. Motor mounting plate; 34. Reset torsion spring; 35. First limit post; 36. Transmission rod; 361. Locking post; 37. Locking rod; 371. Locking groove; 38. Second limit post; 39. Third limit post; 4. Needle bar return assembly; 41. Second guide rod; 42. Needle bar connecting piece; 43. Return spring; 5. Machine frame. Detailed implementation mode

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0032] Please refer to Figures 1 to 6 , a stitch skipping mechanism for a disk embroidery of an embodiment of the present utility model includes a needle bar 1, a needle bar driving assembly 2, a stitch skipping assembly 3 and a needle bar returning assembly 4. The needle bar driving assembly 2 cooperates with the needle bar 1 to drive the needle bar 1 to perform reciprocating lifting and lowering movements in the vertical direction. The stitch skipping assembly 3 is used to drive the needle bar driving assembly 2 to rotate. During the rotation of the needle bar driving assembly 2, it is disengaged from the needle bar 1. The needle bar returning assembly 4 drives the needle bar 1 to move to the upper needle position to make the embroidery needle on the needle bar 1 hover above the fabric.

[0033] In this patent, an embroidery needle is provided at the bottom of the needle bar 1. It can be foreseen that the disk embroidery device further includes a frame 5. The needle bar driving assembly 2, the stitch skipping assembly 3 and the needle bar returning assembly 4 are all arranged on the frame 5. The needle bar 1 is movably arranged on the frame 5 in the vertical direction. During embroidery, the needle bar driving assembly 2 cooperates with the needle bar 1, so as to drive the needle bar 1 to perform reciprocating lifting and lowering movements in the vertical direction through the needle bar driving assembly 2, and the embroidery needle arranged on the needle bar 1 passes the surface thread through the fabric below the frame 5 to complete the embroidery of this embroidery point.

[0034] After the embroidery work at one embroidery point is completed, the stitch skipping assembly 3 operates to drive the needle bar driving assembly 2 to rotate. During the rotation of the needle bar driving assembly 2, the needle bar driving assembly 2 is disengaged from the needle bar 1. At this time, the needle bar returning assembly 4 drives the needle bar 1 to move to the upper needle position, driving the embroidery needle to move upward synchronously, so that the embroidery needle accurately hovers above the fabric.

[0035] Then, the fabric is driven to move by the embroidery frame, so that on the one hand, the embroidery needle can jump between embroidery points; on the other hand, when the embroidery needle hooks the embroidery thread, the embroidery needle can drive the embroidery thread to perform a long-distance jump to form a long stitch border, thereby making the disk embroidery device applicable to embroidery processes such as flat embroidery, ribbon embroidery, and cord embroidery, with stronger practicability and a wider application range.

[0036] In this embodiment, the needle bar driving assembly 2 includes a lifting driving member 21, a driver 22, and a first guide rod 23. The lifting driving member 21 is arranged in the frame 5 and connected to the driver 22. The first guide rod 23 is arranged in the frame 5 in the vertical direction and penetrates through the driver 22. Therefore, when the lifting driving member 21 operates, it can drive the driver 22 to lift and lower along the first guide rod 23. The driver 22 cooperates with the needle bar 1. Therefore, when the driver 22 lifts and lowers along the first guide rod 23, it can drive the needle bar 1 to synchronously lift and lower in the vertical direction.

[0037] Specifically, in actual implementation, the lifting driving member 21 can be composed of a cam mechanism and a connecting rod mechanism. The cam mechanism is arranged on the frame 5, and the connecting rod mechanism connects the cam mechanism with the driver 22. Thus, when the cam mechanism operates, the connecting rod mechanism drives the driver 22 to perform high-speed reciprocating lifting and lowering movements along the first guide rod 23. Furthermore, through the cooperation between the driver 22 and the needle bar 1, the needle bar 1 is driven to perform high-speed reciprocating lifting and lowering movements in the vertical direction.

[0038] Since the lifting driving member 21 drives the needle bar 1 to perform high-speed reciprocating lifting and lowering movements in the vertical direction, it is difficult to ensure that the embroidery needle accurately hovers above the fabric by controlling the lifting driving member 21 to stop operating. At this time, when the embroidery frame drives the fabric to move to the next embroidery point, it may not only cause the embroidery needle to break, but also may cause the embroidery needle to damage the fabric, thus affecting the embroidery work.

[0039] Therefore, in this embodiment, the needle jumping mechanism further includes a needle jumping component 3 and a needle bar return component 4. When the embroidery work at one embroidery point is completed and the transfer of the embroidery point is required, the needle jumping component 3 is activated to drive the driver 22 to disengage from the needle bar 1, so that the needle bar 1 no longer follows the driver 22 to perform high-speed reciprocating lifting and lowering movements. After the driver 22 disengages from the needle bar 1, the needle bar return component 4 drives the needle bar 1 to move to the upper needle position, so that the embroidery needle on the needle bar 1 accurately hovers above the fabric, so that the embroidery frame can drive the fabric to move to the next embroidery point for embroidery at the next embroidery point.

[0040] Specifically, in this embodiment, the driver 22 includes a transmission frame 221, a transmission seat 222, and a rotary torsion spring 223. The transmission seat 222 is arranged on the transmission frame 221 and rotatably connected to the transmission frame 221. The first guide rod 23 penetrates through the transmission frame 221 and the transmission seat 222. The rotary torsion spring 223 is sleeved on the first guide rod 23, and one end is connected to the transmission frame 221 and the other end is connected to the transmission seat 222. By connecting the transmission frame 221 with the lifting driving member 21, the lifting driving member 21 drives the transmission frame 221, the transmission seat 222, and the rotary torsion spring 223 to synchronously lift and lower along the first guide rod 23.

[0041] A limit block 11 is provided on the needle bar 1, and a limit groove 2221 is provided on the transmission seat 222. During the embroidery process of the embroidery needle, the limit block 11 is inserted and matched with the limit groove 2221, so that when the transmission seat 222 moves up and down along the first guide rod 23, it drives the needle bar 1 to move up and down synchronously in the vertical direction. When the embroidery work of one embroidery point is completed and the transfer of the embroidery point is required, the jump needle assembly 3 is activated to drive the transmission seat 222 to rotate on the transmission frame 221.

[0042] During the rotation of the transmission seat 222, the limit block 11 is disengaged from the limit groove 2221, so that the needle bar 1 no longer follows the transmission seat 222 to perform high-speed reciprocating up and down movement. At this time, the needle bar return assembly 4 drives the needle bar 1 to move to the upper needle position, so that the embroidery needle on the needle bar 1 accurately hovers above the fabric.

[0043] When the transfer of the embroidery point is completed, the lifting drive member 21 continues to drive the transmission seat 222 to move up and down along the first guide rod 23. At this time, the needle bar 1 still stays at the upper needle position. When the transmission seat 222 moves to the same height as the limit groove 2221 and the limit block 11, the jump needle assembly 3 no longer acts on the transmission seat 222. At this time, under the elastic force of the rotary torsion spring 223, the transmission seat 222 rotates in the reverse direction until the limit block 11 is inserted and matched with the limit groove 2221, so that the lifting drive member 21 drives the needle bar 1 to perform high-speed reciprocating up and down movement again to embroider the next embroidery point.

[0044] In this embodiment, the jump needle assembly 3 includes a drive motor 31 and a swing arm 32. The swing arm 32 is connected to the rotating shaft of the drive motor 31. Therefore, when the rotating shaft of the drive motor 31 rotates by a certain angle, it can drive the swing arm 32 to swing by a certain angle.

[0045] A push rod 2222 is provided on the transmission seat 222, and a roller 321 is provided on the swing arm 32. When the rotating shaft of the second drive motor 31 rotates to drive the swing arm 32 to swing, through the rolling contact between the roller 321 and the push rod 2222, the transmission seat 222 is pushed to rotate on the first guide rod 23, so that the limit groove 2221 is disengaged from the limit block 11.

[0046] In this patent, the reason for pushing the transmission seat 222 to rotate on the first guide rod 23 through the rolling contact between the roller 321 and the push rod 2222 is that on the one hand, it is to make the operation of the swing arm 32 pushing the transmission seat 222 to rotate easier to achieve; on the other hand, it is to protect the swing arm 32 and the transmission seat 222, thereby enhancing the practicability of this coiled ribbon embroidery device.

[0047] In this embodiment, since the push rod 2222 extends vertically on the transmission base 222 and the position of the jumping needle assembly 3 on the machine frame 5 is fixed, after the transfer of the embroidery point is completed, the lifting drive member 21 continues to drive the transmission base 222 to move up and down along the first guide rod 23 until the transmission base 222 moves to the same height as the limiting groove 2221 and the limiting block 11, and the push rod 2222 is disengaged from the roller 321, so that the jumping needle assembly 3 no longer acts on the transmission base 222.

[0048] In this embodiment, the jumping needle assembly 3 further includes a motor mounting plate 33. The drive motor 31 is mounted on the machine frame 5 through the motor mounting plate 33, so that one end of the drive motor 31 is located inside the machine frame 5 and the other end is located outside the machine frame 5. The swing arm 32 is arranged at one end of the drive motor 31 located inside the machine frame 5 and is fixedly connected to the rotating shaft of the drive motor 31. Thus, by the rotation of the rotating shaft of the drive motor 31, the swing arm 32 can be driven to swing inside the drive motor 31, and the swing arm 32 acts on the push rod 2222 of the transmission base 222, thereby pushing the transmission base 222 to rotate by a certain angle on the first guide rod 23, so that the limiting groove 2221 on the transmission base 222 is disengaged from the limiting block 11 on the needle bar 1.

[0049] Further, in this embodiment, the jumping needle assembly 3 further includes a return torsion spring 34 sleeved outside the rotating shaft of the drive motor 31. One end of the return torsion spring 34 is fixed on the second drive motor 31 and the other end is fixed on the swing arm 32, for driving the swing arm 32 to reset. In this patent, there are two driving methods for the swing arm 32 to swing in the reverse direction for reset: The first method is to rotate the rotating shaft of the drive motor 31 in the reverse direction to provide power for the reverse swing of the swing arm 32, so that the swing arm 32 is reset.

[0050] The second is to provide power for the reverse swing of the swing arm 32 through the elastic force of the return torsion spring 34, that is, when the drive motor 31 is started, the rotating shaft of the drive motor 31 rotates by a certain angle, driving the swing arm 32 to swing by a certain angle, and the return torsion spring 34 is compressed; when the drive motor 31 is stopped, through the elastic force of the return torsion spring 34 to restore its own deformation, the swing arm 32 and the rotating shaft of the second drive motor 31 are pushed to rotate in the reverse direction, so that the swing arm 32 is reset. In actual implementation, the second driving method is preferably selected to reduce the start of the drive motor 31 and reduce the energy loss.

[0051] ]In this embodiment, the jumping needle assembly 3 further includes a first limiting post 35 arranged on the drive motor 31. The first limiting post 35 is used to limit the swing angle of the swing arm 32 on one side. In the previous embodiment, it was mentioned that the reverse swing reset of the swing arm 32 is driven by the elastic force of the return torsion spring 34.

[0052] Therefore, in this patent, a first limit post 35 is further provided on the drive motor 31. When the drive swing arm 32 and the rotating shaft of the return torsion spring 34 rotate in the reverse direction by the elastic force of the return torsion spring 34, the first limit post 35 limits the swing arm 32 on one side of the swing arm 32. That is, after the swing arm 32 swings in the reverse direction by a certain angle, it abuts against the first limit post 35, thereby limiting the reverse swing stroke of the swing arm 32 through the first limit post 35, making the operation of the needle jumping assembly 3 more stable and efficient.

[0053] In this embodiment, the needle jumping assembly 3 further includes a transmission rod 36, a locking post 361, and a locking rod 37. The transmission rod 36 is fixedly connected to the rotating shaft of the drive motor 31, and the locking rod 37 is rotatably connected to the drive motor 31. The locking post 361 is provided on the transmission rod 36, and a locking groove 371 is provided on the locking rod 37.

[0054] When the rotating shaft of the drive motor 31 rotates, driving the swing arm 32 to swing by a certain angle, the swing arm 32 acts on the transmission seat 222, pushing the transmission seat 222 to rotate by a certain angle on the first guide rod 23, so that when the limiting groove 2221 on the transmission seat 222 is disengaged from the limiting block 11 on the needle bar 1, the transmission rod 36 rotates synchronously with the rotating shaft of the drive motor 31.

[0055] By rotating the locking rod 37 on the drive motor 31, the locking groove 371 on the locking rod 37 is engaged with the locking post 361 on the transmission rod 36, thereby locking the transmission rod 36 and the rotating shaft of the drive motor 31, and further locking the swing arm 32 and the driver 22, so that the driver 22 remains in a state of being disengaged from the needle bar 1, facilitating the needle bar return assembly 4 to drive the needle bar 1 to run to the upper needle position.

[0056] In this embodiment, the needle jumping assembly 3 further includes two second limit posts 38 provided on the drive motor 31, and a third limit post 39 provided on the drive motor 31. The two second limit posts 38 are respectively arranged on both sides of the transmission rod 36 to limit the rotation angle of the transmission rod 36 on both sides, and the third limit post 39 is used to limit the rotation angle of the locking rod 37 on one side.

[0057] In this patent, the needle jumping assembly 3 further includes two second limit posts 38. The two second limit posts 38 are respectively arranged on both sides of the transmission rod 36. One of the second limit posts 38 limits the forward rotation angle of the transmission rod 36, and the other second limit post 38 limits the reverse rotation angle of the transmission rod 36, thereby limiting the forward and reverse rotation angles of the rotating shaft of the drive motor 31.

[0058] When the rotating shaft of the driving motor 31 rotates forward, it drives the swing arm 32 to rotate forward, driving the driver 22 to disengage from the needle bar 1. Therefore, a second limit post 38 is provided at one end of the transmission rod 36 to limit the forward rotation angle of the transmission rod 36. Then, the lock groove 371 on the lock rod 37 cooperates with the locking post 361 at the other end of the transmission rod 36 to limit the forward rotation angle of the transmission rod 36, making the locking of the transmission rod 36 more stable, that is, the locking of the swing arm 32 and the driver 22 more stable, and further keeping the driver 22 in a state of disengaging from the needle bar 1, facilitating the needle bar return assembly 4 to drive the needle bar 1 to run to the upper needle position.

[0059] As mentioned in the previous embodiment: when the driving swing arm 32 and the rotating shaft of the driving motor 31 rotate in the reverse direction, at one end of the rotating shaft of the driving motor 31, the first limit post 35 limits it on one side of the swing arm 32. At the same time, in this patent, at the other end of the rotating shaft of the driving motor 31, another second limit post 38 limits the transmission rod 36 on one side, making the reset of the swing arm 32 more stable and efficient.

[0060] In this patent, the stitch skipping assembly 3 further includes a third limit post 39. When the lock rod 37 rotates forward on the driving motor 31, the lock groove 371 on the lock rod 37 cooperates with the locking post 361 on the transmission rod 36 to lock the transmission rod 36. When the lock rod 37 does not lock the transmission rod 36, the third limit post 39 limits its reverse rotation on one side of the lock rod 37 to prevent the lock rod 37 from rotating freely, making the use of this stitch skipping assembly 3 simpler and more efficient.

[0061] In this embodiment, the needle bar return assembly 4 includes a second guide rod 41, a needle bar connector 42, and a return spring 43. The second guide rod 41 is arranged vertically in the frame 5. One end of the needle bar connector 42 is fixedly connected to the needle bar 1, and the other end is slidably connected to the second guide rod 41. The return spring 43 is sleeved on the second guide rod 41.

[0062] Since one end of the return spring 43 is fixed and the other end abuts against the needle bar connector 42, when the needle bar driving assembly 2 drives the needle bar 1 to move downward, the return spring 43 is compressed through the needle bar connector 42.

[0063] When the stitch skipping assembly 3 operates and drives the driver 22 to rotate, the driver 22 disengages from the needle bar 1 and no longer limits the needle bar 1. At this time, under the elastic force of the return spring 43 to restore its own deformation, it pushes the needle bar connector 42 to move vertically on the second guide rod 41, thereby driving the needle bar 1 to move vertically upward synchronously, making the needle bar 1 automatically run to the upper needle position, and further making the embroidery needle at the bottom of the needle bar 1 hover above the fabric.

[0064] Specifically, during actual implementation, the return spring 43 is sleeved on the second guide rod 41. A stop block can be arranged on the second guide rod 41. One end of the return spring 43 abuts against the stop block, and the other end abuts against the needle bar connecting member 42. Alternatively, at the fixed connection between the second guide rod 41 and the machine frame 5, one end of the return spring 43 can directly abut against the machine frame 5, and the other end abuts against the needle bar connecting member 42.

[0065] The content described above can be implemented alone or in various combinations, and these variant ways are all within the protection scope of the present utility model.

[0066] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A jump needle mechanism for disk embroidery, characterized in that: It includes a needle bar (1), a needle bar driving assembly (2), a stitch skipping assembly (3) and a needle bar return assembly (4). The needle bar driving assembly (2) cooperates with the needle bar (1) to drive the needle bar (1) to perform reciprocating lifting and lowering movements in the vertical direction. The stitch skipping assembly (3) is used to drive the needle bar driving assembly (2) to rotate. During the rotation of the needle bar driving assembly (2), it disengages from the needle bar (1). The needle bar return assembly (4) drives the needle bar (1) to move to the upper needle position to make the embroidery needle on the needle bar (1) hover above the fabric.

2. The skip stitch mechanism of a disk and tape embroidery machine according to claim 1, characterized in that: The needle bar driving assembly (2) includes a lifting driving member (21) provided in a machine frame (5), a driver (22) cooperating with the needle bar (1), and a first guide rod (23) vertically arranged in the machine frame (5). The first guide rod (23) penetrates through the driver (22). The lifting driving member (21) is connected to the driver (22) to drive the driver (22) to lift and lower along the first guide rod (23). The driver (22) is used to drive the needle bar (1) to lift and lower in the vertical direction.

3. A jump stitch mechanism for disk embroidery as described in claim 2, characterized in that: A limiting block (11) is provided on the needle bar (1). The driver (22) includes a transmission frame (221) connected to the lifting driving member (21), a transmission seat (222) rotatably connected to the transmission frame (221), and a return torsion spring (223) with one end connected to the transmission frame (221) and the other end connected to the transmission seat (222). A limiting groove (2221) cooperating with the limiting block (11) is provided on the transmission seat (222). The stitch skipping assembly (3) is used to drive the transmission seat (222) to rotate. During the rotation of the transmission seat (222), the limiting block (11) disengages from the limiting groove (2221). The return torsion spring (223) is used to drive the transmission seat (222) to rotate in the reverse direction.

4. A stitch skipping mechanism for disk embroidery as described in claim 1, characterized in that: A push rod (2222) is provided on the needle bar driving assembly (2). The stitch skipping assembly (3) includes a driving motor (31) installed on the machine frame (5), and a swing arm (32) connected to the driving motor (31). A roller (321) is provided on the swing arm (32). The driving motor (31) is used to drive the swing arm (32) to swing. The roller (321) acts on the push rod (2222) to drive the needle bar driving assembly (2) to rotate.

5. A skipping mechanism for disk embroidery as described in claim 4, characterized in that: The stitch skipping assembly (3) further includes a motor mounting plate (33) for mounting the driving motor (31) on the machine frame (5). One end of the driving motor (31) is located inside the machine frame (5) and the other end is located outside the machine frame (5). The swing arm (32) is connected to the end of the driving motor (31) located inside the machine frame (5).

6. A jump stitch mechanism for disk and tape embroidery as described in claim 4, characterized in that: The stitch skipping assembly (3) further includes a return torsion spring (34) sleeved outside the rotating shaft of the drive motor (31). One end of the return torsion spring (34) is fixed on the drive motor (31), and the other end is fixed on the swing arm (32) for driving the swing arm (32) to return to its original position.

7. A jump stitch mechanism for disk embroidery as described in claim 6, characterized in that: The stitch skipping assembly (3) further includes a first limit post (35) provided on the drive motor (31). The first limit post (35) is used to limit the swing angle of the swing arm (32) on one side.

8. A jump stitch mechanism for disk embroidery as described in claim 4, characterized in that: The stitch skipping assembly (3) further includes a transmission rod (36) connected to the rotating shaft of the drive motor (31), a locking post (361) provided on the transmission rod (36), and a locking rod (37) rotatably connected to the drive motor (31). A locking groove (371) cooperating with the locking post (361) is provided on the locking rod (37).

9. A jump stitch mechanism for a disk and tape embroidery as described in claim 8, characterized in that: The stitch skipping assembly (3) further includes two second limit posts (38) provided on the drive motor (31), and a third limit post (39) provided on the drive motor (31). The two second limit posts (38) are respectively arranged on both sides of the transmission rod (36) for limiting the rotation angle of the transmission rod (36) on both sides. The third limit post (39) is used to limit the rotation angle of the locking rod (37) on one side.

10. A jump stitch mechanism for a disk and tape embroidery as described in claim 1, characterized in that: The needle bar return assembly (4) includes a second guide rod (41) vertically arranged in the machine frame (5), a needle bar connecting member (42) with one end slidably connected to the second guide rod (41) and the other end fixed to the needle bar (1), and a return spring (43) sleeved on the second guide rod (41). One end of the return spring (43) is fixed, and the other end abuts against the needle bar connecting member (42) for driving the needle bar connecting member (42) to rise along the second guide rod (41).

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