A thread trimming drive mechanism for a cylinder embroidery machine

Abstract

The utility model provides a thread trimming drive mechanism for a cylinder embroidery machine, wherein a fixed knife is arranged on a needle plate seat, and the thread trimming movable knife is connected to the needle plate seat through the rotation of a movable knife wheel, and a driving shaft for driving the movable knife wheel is arranged on a shuttle box, and the driving shaft is driven by a driving motor and a transmission structure, thereby driving the movable knife wheel to rotate and drive the thread trimming movable knife to rotate around a rotary shuttle to cooperate with the fixed knife to cut the thread. The movable knife wheel is driven to rotate through the driving shaft, thereby driving the movable knife to rotate and cut the thread, rather than a swing rod, thereby reducing the space occupied by the driving mechanism of the entire thread trimming mechanism, and the transmission is stable and the thread trimming reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery machines, in particular to a thread cutting drive mechanism for a cylinder embroidery machine. Background Art

[0002] Cylinder embroidery refers to the form of embroidery on embroidery products with a circumferential surface, such as hats, trouser legs or sleeves. Existing cylinder embroidery is generally provided with a thread trimming device to trim the thread after the target pattern is embroidered. Existing thread trimming mechanisms are usually driven by motors and swing rods. The motor swing rod structure is relatively complex, occupies space, and has poor compatibility. Summary of the invention

[0003] In order to solve the defects of the prior art mentioned above, the utility model provides a thread trimming drive mechanism for a cylinder embroidery machine which has a simple and compact drive mechanism, reduces the space occupied by the drive mechanism on the needle plate seat, and saves space.

[0004] The technical solutions adopted are:

[0005] A thread trimming drive mechanism for a cylinder embroidery machine comprises a needle plate seat mounted on a shuttle box, a rotary shuttle arranged in the needle plate seat, a fixed knife and a rotatable thread trimming movable knife are arranged on the needle plate seat, a movable knife wheel rotatably connected to the needle plate seat is arranged on the thread trimming movable knife, a driving shaft for driving the movable knife wheel is arranged on the shuttle box, and a driving motor and a transmission structure are arranged on the driving shaft.

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

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

[0008] Furthermore, the movable knife wheel is provided with a transmission wheel connected to the driving shaft, and the transmission wheel is arranged on the needle plate seat.

[0009] Furthermore, the driving shaft is arranged on the shuttle box and cooperates with the moving cutter wheel.

[0010] Furthermore, the gear set is a bevel gear set arranged between the drive shaft and the drive motor.

[0011] Furthermore, the needle plate seat is arranged on the front end surface of the shuttle box.

[0012] Furthermore, matching meshing teeth or a transmission belt are provided between the movable cutter wheel and the transmission wheel.

[0013] Furthermore, the thread cutting movable knife and / or fixed knife is an arc-shaped knife arranged outside the rotary hook.

[0014] Furthermore, the needle plate seat is also provided with a line dividing piece for dividing the lines; the line dividing piece is an arc-shaped line dividing piece.

[0015] Compared with the prior art, the beneficial effects produced by the utility model are:

[0016] The utility model provides a fixed knife on a needle plate seat, which is connected to a thread cutting movable knife on the needle plate seat through a movable knife wheel, and a driving shaft for driving the movable knife wheel is provided on a shuttle box. The driving shaft is driven by a driving motor and a transmission structure, thereby driving the movable knife wheel to rotate and drive the thread cutting movable knife to rotate around a rotary shuttle to cooperate with the fixed knife to cut the thread.

[0017] The driving shaft drives the movable cutter wheel to rotate, thereby driving the movable cutter to rotate and cut the thread, rather than the swing rod, which reduces the space occupied by the driving mechanism of the entire thread cutting mechanism, ensures stable transmission and high thread cutting reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point a;

[0021] Figure 4 This is a schematic diagram of the structure inside the shuttle box of the utility model;

[0022] Figure 5 It is a partial structural schematic diagram of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the shuttle box of the utility model from another angle;

[0024] Figure 7 , Figure 8 It is a stereogram and a front view of another implementation case of the driving mechanism of the utility model.

[0025] Among them, the thread trimming movable knife 1, the shuttle box 2, the needle plate seat 3, the movable knife wheel 4, the transmission pulley assembly 5, the driving motor 6, the driving shaft 7, the bevel gear set 8, the first bevel gear 801, the second bevel gear 802, the transmission wheel 9, the rotary shuttle 10, the fixed knife 11, and the wire dividing plate 12. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with specific embodiments.

[0027] refer to Figure 1-6A thread trimming drive mechanism for a cylinder embroidery machine includes a rotatable thread trimming movable knife 1, a needle plate seat 3 installed on the front end surface of a shuttle box 2, the thread trimming movable knife 1 is provided with a movable knife wheel 4 rotatably connected to the needle plate seat 3, the shuttle box 2 is provided with a driving shaft 7 for driving the movable knife wheel 4, and the driving shaft 7 is provided with a driving motor 6 and a transmission structure. The movable knife wheel 4 can be directly driven by the driving shaft 7 to drive the thread trimming movable knife 1 to rotate and cooperate with the fixed knife to cut the thread. Preferably, the thread trimming movable knife 1 and / or the fixed knife 11 are arc-shaped knives arranged outside the rotary shuttle 10. The arc-shaped knife can be arranged concentrically with the rotary shuttle drive shaft.

[0028] Preferably, the moving cutter wheel 4 can be coaxially arranged with the rotary hook drive shaft, so the moving cutter wheel 4 is provided with a transmission wheel 9 connected to the drive shaft 7, and the transmission wheel 9 is arranged on the needle plate seat 3 to cooperate with the moving cutter wheel 9. Matching meshing teeth or transmission belts are arranged between the moving cutter wheel 4 and the transmission wheel 9. The concentrically arranged moving cutter wheel 4 and the rotary hook drive shaft are respectively provided with independent drive motors.

[0029] In this embodiment, meshing teeth are provided at the matching position between the moving cutter wheel 4 and the transmission wheel 9.

[0030] The transmission structure is a gear set and / or a transmission pulley assembly arranged between the drive motor 6 and the drive shaft 7 .

[0031] See also Figure 1-6 The transmission structure is a gear set 8 disposed between the drive motor 6 and the drive shaft 7, and the gear set 8 is a bevel gear set disposed between the drive shaft 7 and the drive motor. The drive shaft 7 can be disposed inside the shuttle box 2,

[0032] Furthermore, the gear set 8 includes a first bevel gear 801 provided on the output shaft of the driving motor 6 and a second bevel gear 802 provided on the driving shaft 7, and the first and second bevel gears cooperate with each other. The driving motor 6 can drive the first bevel gear 801 to rotate, and since the first bevel gear cooperates with the second bevel gear 802, the second bevel gear 802 can rotate accordingly, and drive the driving shaft 7 on the second bevel gear 802 to rotate. The driving shaft 7 rotates with the meshing toothed movable cutter wheel 4 on the transmission wheel 9, thereby driving the thread trimming movable cutter 1 to rotate, and can cooperate with the fixed cutter 11 to cut the thread.

[0033] See also Figure 7-8 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 transmission noise.

[0034] The needle plate seat 3 is also provided with a line dividing piece 12 for dividing the lines; the line dividing piece 12 is an arc-shaped line dividing piece.

[0035] Since the fixed knife is fixed on the needle plate seat 3, the thread cutting movable knife 1 needs to rotate with the fixed knife to complete the thread cutting, and the fixed knife is arranged above the rotary hook 10, so the thread cutting needs to be completed above the rotary hook 10. The thread cutting movable knife 1 needs to rotate above the rotary hook to cooperate with the fixed knife, and does not need to rotate one circle. As a preferred embodiment, the outer peripheral part of the movable knife wheel 4 is provided with meshing teeth that cooperate with the transmission wheel 9.

[0036] The middle of the needle plate seat 3 is provided with a mounting hole through which the rotary hook drive shaft can pass, and the rotary hook drive is arranged inside the shuttle box 2.

[0037] The movable cutter wheel 4 is installed on the mounting hole of the needle plate seat by installing the back plate. The movable cutter wheel 4 is also arranged outside the rotary hook drive shaft. A through hole is arranged in the center of the movable cutter wheel 4 for passing the rotary hook drive shaft. Furthermore, the movable cutter wheel 4 and the rotary hook 10 are coaxially installed to reduce the space occupied by the needle plate seat. At the same time, when the movable cutter wheel rotates, the through hole of the movable cutter wheel and the rotary hook drive shaft do not contact each other and do not affect each other.

[0038] Furthermore, the driving shaft 7, driving motor 6, etc. are all arranged inside the shuttle box, and most of the driving mechanisms are arranged inside the shuttle box. The thread cutting knife 1 is driven by the transmission wheel arranged on the needle plate seat 3, which reduces the space occupied by the needle plate seat 3 and saves a lot of space.

[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A thread trimming drive mechanism for a cylinder embroidery machine, comprising a needle plate seat (3) mounted on a shuttle box (2), and a rotary shuttle disposed in the needle plate seat (3), characterized in that: The needle plate seat (3) is provided with a fixed knife (11) and a rotatable thread cutting movable knife (1); the thread cutting movable knife (1) is provided with a movable knife wheel (4) rotatably connected to the needle plate seat (3); the shuttle box (2) is provided with a driving shaft (7) for driving the movable knife wheel (4); the driving shaft (7) is provided with a driving motor (6) and a transmission structure.

2. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 1, characterized in that: The transmission structure is a gear set (8) and / or a transmission pulley assembly (5) arranged between the drive motor (6) and the drive shaft (7).

3. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 2, characterized in that: The transmission pulley assembly is a synchronous pulley assembly arranged between the drive motor (6) and the drive shaft (7).

4. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 1, characterized in that: The movable cutter wheel (4) is provided with a transmission wheel (9) connected to the drive shaft (7); the transmission wheel (9) is arranged on the needle plate seat (3) and cooperates with the movable cutter wheel (4).

5. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 1, characterized in that: The driving shaft (7) is arranged on the shuttle box (2).

6. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 2, characterized in that: The gear set (8) is a bevel gear set arranged between the drive shaft (7) and the drive motor.

7. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 1, characterized in that: The needle plate seat (3) is arranged on the front end surface of the shuttle box (2).

8. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 4, characterized in that: Matching meshing teeth or a transmission belt are provided between the movable cutter wheel (4) and the transmission wheel (9).

9. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 1, characterized in that: The thread cutting movable knife (1) and / or the fixed knife (11) are arc-shaped knives arranged outside the rotary hook (10).

10. The thread trimming drive mechanism of a cylinder embroidery machine according to claim 1, characterized in that: The needle plate seat (3) is also provided with a line dividing piece (12) for dividing the lines; the line dividing piece (12) is an arc-shaped line dividing piece.

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