Thread-cutting driving mechanism of tube embroidery machine

Abstract

To provide a thread-cutting driving mechanism of a tube embroidery machine.SOLUTION: On a needle plate base, there are provided: a stationary knife; and a thread-cutting movable knife including a movable knife wheel rotatably connected to the needle plate base. A driving shaft for driving the movable knife wheel is arranged on a shuttle box, and the driving shaft is driven in conjunction by a driving motor and a transmission structure. Thereby, the movable knife wheel is rotated, and in conjunction with this, the thread-cutting movable knife is rotated around a rotary shuttle and cooperates with the stationary knife to cut a thread. By rotating the movable knife wheel through the driving shaft instead of a swing rod, the movable knife is driven in conjunction so as to be rotated and cuts the thread. As a result, a space occupied by a driving mechanism for driving a thread-cutting mechanism as a whole is reduced, transmission is stabilized, and thread-cutting reliability is improved.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to the technical field of embroidery machines, and particularly to a thread cutting drive mechanism for a cylinder sewing embroidery machine.

Background Art

[0002] Cylinder sewing refers to a form of embroidering an embroidered product having a circumferential surface such as a hat, the hem of trousers, or a sleeve. Conventional cylinder sewing embroidery machines generally include a thread cutting device for cutting the thread after embroidering the desired pattern. Conventional thread cutting mechanisms are generally driven by a motor and a swing rod, but the structure of the motor swing rod is relatively complex, takes up space, and has low compatibility.

Summary of the Invention

[0003] In order to solve the above-mentioned drawbacks in the prior art, the present invention provides a thread cutting drive mechanism for a cylinder sewing embroidery machine in which the drive mechanism is simple and compact, the space occupied by the drive mechanism on the needle plate base is reduced, and space saving is realized.

[0004] The technical solution adopted is as follows.

[0005] A thread cutting drive mechanism for a cylinder sewing embroidery machine, comprising a needle plate base attached to a shuttle box and a rotating bobbin disposed within the needle plate base. The needle plate base is provided with a fixed blade and a rotatable thread cutting moving blade, and the thread cutting moving blade is provided with a moving blade wheel rotatably connected to the needle plate base. The shuttle box is provided with a drive shaft for driving the moving blade wheel, and a drive motor and a transmission structure are connected to the drive shaft.

[0006] Furthermore, the transmission structure is a gear group and / or a transmission pulley assembly disposed between the drive motor and the drive shaft.

[0007] Furthermore, the transmission pulley assembly is a synchronous pulley assembly disposed between the drive motor and the drive shaft.

[0008] Furthermore, a drive wheel connected to the drive shaft is attached to the moving blade wheel, and the drive wheel is disposed on the needle plate base so as to cooperate with the moving blade wheel.

[0009] Furthermore, the drive shaft is disposed in the shuttle box so as to cooperate with the moving blade wheel.

[0010] Furthermore, the gear group is a step-up gear group disposed between the drive shaft and the drive motor.

[0011] Furthermore, the shuttle box includes a shuttle box body disposed at the rear and an extension portion disposed at the front end of the shuttle box body. The drive motor is disposed inside the shuttle box body or on the side surface of the shuttle box body, and the needle plate base is disposed on the front end surface of the shuttle box.

[0012] Furthermore, a matching meshing tooth or a transmission belt is provided between the moving blade wheel and the drive wheel.

[0013] Furthermore, the thread-cutting moving blade and / or the fixed blade is an arc-shaped blade provided outside the rotating bobbin.

[0014] Furthermore, a thread dividing piece for dividing the thread is provided on the needle plate base. The thread dividing piece is an arc-shaped thread dividing piece.

[0015] Compared with the prior art, the beneficial effects brought by the present invention are as follows.

[0016] According to the present invention, the needle plate base is provided with a fixed blade and a thread-cutting moving blade having a moving blade wheel rotatably connected to the needle plate base. Further, a drive shaft for driving the moving blade wheel is arranged in the shuttle box, and the drive shaft is interlocked by a drive motor and a transmission structure. Thereby, the moving blade wheel rotates, and the thread-cutting moving blade rotates around the rotating bobbin in conjunction therewith and cooperates with the fixed blade to cut the thread.

[0017] Instead of the swing rod, by rotating the moving blade wheel via the drive shaft, the moving blade rotates in conjunction to cut the thread. Therefore, the space occupied by the drive mechanism for driving the entire thread-cutting mechanism is reduced, the transmission is stable, and the reliability of thread cutting is enhanced. The thread-cutting structure of the present invention is particularly suitable for the slender structure at the tip of the cylinder sewing shuttle box and is especially suitable for cylinder sewing embroidery machines.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0019] The present invention will be described in detail below with reference to specific embodiments.

[0020] Please refer to FIGS. 1 to 6. A thread cutting drive mechanism of a cylinder sewing machine, the thread cutting drive mechanism includes a rotatable thread cutting moving blade 1 and a needle plate base 3 attached to a shuttle box 2. The thread cutting moving blade 1 is provided with a moving blade wheel 4 rotatably connected to the needle plate base 3. In the shuttle box 2, a drive shaft 7 for driving the moving blade wheel 4 is arranged. A drive motor 6 and a transmission structure are connected to the drive shaft 7. By directly driving the moving blade wheel 4 via the drive shaft 7, the thread cutting moving blade 1 rotates in conjunction and can cooperate with a fixed blade to cut the thread. Preferably, the thread cutting moving blade 1 and / or the fixed blade 11 is an arc-shaped blade provided outside the rotating bobbin 10. The arc-shaped blade may be arranged to have the same center as the rotating bobbin drive shaft.

[0021] Preferably, the moving blade wheel 4 may be arranged to have the same axis as the rotating bobbin drive shaft. A drive wheel 9 connected to the drive shaft 7 is attached to the moving blade wheel 4, and the drive wheel 9 is arranged on the needle plate base 3 so as to cooperate with the moving blade wheel 4. A matching meshing tooth or a transmission belt is provided between the moving blade wheel 4 and the drive wheel 9. Independent drive motors are connected to the moving blade wheel 4 and the rotating bobbin drive shaft arranged to have the same center respectively.

[0022] The shuttle box 2 includes a shuttle box body 21 arranged at the rear and an extension part 22 arranged at the front end of the shuttle box body 21. Considering that the space occupied by the shuttle box body 21 is large, the drive motor 6 is arranged inside the shuttle box body 21 or on the side surface of the shuttle box body 21, and the needle plate base 3 is arranged on the front end face of the shuttle box 2.

[0023] In this embodiment, meshing teeth are provided at the cooperation part between the moving blade wheel 4 and the drive wheel 9.

[0024] The transmission structure is a gear group and / or a transmission pulley assembly arranged between the drive motor 6 and the drive shaft 7.

[0025] Please refer to FIGS. 1 to 6. The transmission structure is a gear group 8 disposed between the drive motor 6 and the drive shaft 7, and the gear group 8 is a bevel gear group disposed between the drive shaft 7 and the drive motor. The drive shaft 7 may be disposed inside the shuttle box 2. The drive motor 6 is disposed inside the shuttle box body 21.

[0026] Furthermore, the gear group 8 includes a first bevel gear 801 attached to the output shaft of the drive motor 6 and a second bevel gear 802 attached to the drive shaft 7, and the first bevel gear and the second bevel gear cooperate with each other. The first bevel gear 801 can be rotated by the drive of the drive motor 6. Since the first bevel gear and the second bevel gear 802 cooperate with each other, the second bevel gear 802 rotates accordingly, and the drive shaft 7 in the second bevel gear 802 can rotate in conjunction therewith. The drive shaft 7 rotates via the meshing tooth moving blade wheel 4 on the drive wheel 9, whereby the thread cutting moving blade 1 rotates in conjunction and can cooperate with the fixed blade 11 to cut the thread.

[0027] Please refer to FIGS. 7 to 8. The transmission structure is a transmission pulley assembly 5 disposed between the drive motor 6 and the drive shaft 7. Preferably, the transmission pulley assembly 5 is a synchronous pulley assembly disposed between the drive motor 6 and the drive shaft 7. The synchronous pulley assembly can reduce the transmission noise. The drive motor 6 is disposed on one side surface of the shuttle box body 21.

[0028] The needle plate base 3 is provided with a thread dividing piece 12 for dividing the thread. The thread dividing piece 12 is an arc-shaped thread dividing piece.

[0029] The fixed blade is fixed to the needle plate base 3, and the thread-cutting moving blade 1 needs to rotate and cooperate with the fixed blade to complete thread cutting. Also, since the fixed blade is provided above the rotating bobbin 10, thread cutting needs to be completed above the rotating bobbin 10. The thread-cutting moving blade 1 needs to rotate above the rotating bobbin and cooperate with the fixed blade, and it does not need to rotate a full circle. Preferably, the outer peripheral portion of the moving blade wheel 4 is provided with meshing teeth adapted to the driving wheel 9.

[0030] An attachment hole for passing the rotating bobbin drive shaft is provided in the middle part of the needle plate base 3, and the drive device of the rotating bobbin is arranged inside the shuttle box 2.

[0031] The moving blade wheel 4 is attached to the attachment hole of the needle plate base 3 via the attachment back plate. Also, the moving blade wheel 4 is arranged outside the rotating bobbin drive shaft, and a through hole through which the rotating bobbin drive shaft can penetrate is provided at the center of the moving blade wheel 4. Furthermore, since the moving blade wheel 4 and the rotating bobbin 10 are coaxially attached, the space occupied by the needle plate base can be reduced. On the other hand, when the moving blade wheel rotates, the through hole of the moving blade wheel and the rotating bobbin drive shaft do not contact each other and do not affect each other.

[0032] Furthermore, the drive shaft 7, the drive motor 6, etc. are all arranged inside the shuttle box. Most of the drive mechanisms are arranged inside the shuttle box, and the thread-cutting moving blade 1 is driven by the transmission of the driving wheel arranged on the needle plate base 3. Therefore, the space occupied by the needle plate base 3 is reduced, and space saving is realized.

Explanation of Reference Numerals

[0033] 1 Thread-cutting moving blade 2 Shuttle box 3 Needle plate base 4 Moving blade wheel 5 Transmission pulley assembly 6 Drive motor 7 Drive shaft 8 Step gear group 801 First step gear 802 Second Casing Gear 9 Driving Wheel 10 Rotary Kettle 11 Fixed Blade 12 Thread Division Piece 21 Shuttle Box Body 22 Extension Part

Claims

1. A thread cutting drive mechanism for a cylinder sewing embroidery machine, comprising a needle plate base (3) attached to a shuttle box (2) and a rotary kettle disposed within the needle plate base (3), wherein the needle plate base (3) is provided with a fixed blade (11) and a rotatable thread cutting moving blade (1), the thread cutting moving blade (1) is provided with a moving blade wheel (4) rotatably connected to the needle plate base (3), the shuttle box (2) is provided with a drive shaft (7) for driving the moving blade wheel (4), and a drive motor (6) and a transmission structure are connected to the drive shaft (7). The thread cutting drive mechanism of the cylinder sewing embroidery machine is characterized by the above structure.

2. The transmission structure according to claim 1, wherein the transmission structure is a gear group (8) and / or a transmission pulley assembly (5) disposed between the drive motor (6) and the drive shaft (7). The thread cutting drive mechanism of the cylinder sewing embroidery machine is characterized by the above structure.

3. The thread cutting drive mechanism of the cylinder sewing embroidery machine according to claim 2, wherein the transmission pulley assembly is a synchronous pulley assembly disposed between the drive motor (6) and the drive shaft (7).

4. The thread cutting drive mechanism of the cylinder sewing embroidery machine according to claim 1, wherein a drive wheel (9) connected to the drive shaft (7) is attached to the moving blade wheel (4), and the drive wheel (9) is disposed on the needle plate base (3) so as to cooperate with the moving blade wheel (4).

5. The thread cutting drive mechanism of the cylinder sewing embroidery machine according to claim 1, wherein the drive shaft (7) is disposed in the shuttle box (2).

6. The thread cutting drive mechanism of the cylinder sewing embroidery machine according to claim 2, wherein the gear group (8) is a bevel gear group disposed between the drive shaft (7) and the drive motor.

7. The shuttle box (2) includes a shuttle box body (21) disposed at the rear and an extension portion (22) disposed at the front end of the shuttle box body (21). The drive motor (6) is disposed inside the shuttle box body (21) or on the side surface of the shuttle box body (21), and the needle plate base (3) is disposed on the front end surface of the shuttle box (2). The thread cutting drive mechanism of the cylinder sewing embroidery machine is characterized by the above structure.

8. The thread cutting drive mechanism of the cylinder sewing embroidery machine according to claim 4, characterized in that a matching meshing tooth or a transmission belt is provided between the moving blade wheel (4) and the drive wheel (9).

9. The thread cutting drive mechanism of the cylinder sewing embroidery machine according to claim 1, characterized in that the thread cutting moving blade (1) and / or the fixed blade (11) is an arc-shaped blade provided outside the rotary hook (10).

10. The thread cutting drive mechanism of the cylinder sewing embroidery machine according to claim 1, characterized in that a thread dividing piece (12) for dividing the thread is provided on the needle plate base (3), and the thread dividing piece (12) is an arc-shaped thread dividing piece.

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