Cutter driving device of sewing machine

Abstract

Provided is a cutter driving device of a sewing machine. The cutter mechanism mainly solves the problem that the overall structure of a conventional cutter mechanism is relatively complex. The device is characterized by comprising a power source (1), the power source comprises a rotating shaft (11), a transmission piece (12) and a transmission rod (2) are arranged on the rotating shaft, the transmission rod is connected with the transmission piece, and at least part of the transmission rod is arranged in a sewing machine shell (9) and connected with a cutter connecting rod (91) of the sewing machine to drive the cutter connecting rod to move up and down. The cutter driving device of the sewing machine is simple in structure, few in parts and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the field of sewing equipment, in particular to a cutter driving device of a sewing machine. Background Art

[0002] The sewing machine needs to be provided with a cutter mechanism for cutting the cloth in the middle of the suture line to form a buttonhole. In the cutter mechanism, the cutter is generally mounted on a cutter shaft, and the cutter shaft is connected to the frame in a movable manner up and down.

[0003] Conventional cutter mechanisms are usually driven by gear plates, and the overall structure is relatively complex. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model provides a cutter driving device for a sewing machine, which mainly solves the problem that the overall structure of the conventional cutter mechanism is relatively complicated.

[0005] The technical solution of the utility model is:

[0006] Cutter drive device for sewing machine, comprising

[0007] A power source, the power source comprising a rotating shaft, the rotating shaft being provided with a transmission member,

[0008] A transmission rod is connected to the transmission member, and at least a portion of the transmission rod is arranged inside the sewing machine housing and connected to the cutter connecting rod of the sewing machine and is used to drive the cutter connecting rod to move up and down.

[0009] The power source is a servo motor.

[0010] A connecting seat is installed on the rotating shaft, and the transmission member is a sliding block provided on the connecting seat.

[0011] The transmission rod is provided with a sliding groove which is slidably matched with the sliding block.

[0012] It also includes a guide plate installed in the sewing machine housing, the guide plate is provided with a guide groove, and the transmission rod is provided with a guide block that slides with the guide groove.

[0013] The transmission rod is provided with a mounting groove for installing the cutter connecting rod.

[0014] A fastening screw is installed on the sliding block, and the fastening screw includes a rod portion and a cap portion, the rod portion is connected to the sliding block, and the cap portion is arranged on the outer wall of the sliding groove.

[0015] It also includes a mounting plate, the power source is mounted on the mounting plate, and the mounting plate is used to be connected to the outer wall of the sewing machine housing.

[0016] The beneficial effects of the utility model are as follows: the utility model provides a cutter driving device for a sewing machine, which has a simple structure, fewer parts and components, and is convenient for assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a three-dimensional schematic diagram of an embodiment of the present invention installed on a sewing machine.

[0018] Figure 2 The exploded schematic diagram of one embodiment of the utility model installed on a sewing machine.

[0019] Figure 3 It is a partial three-dimensional schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings: As shown in the figure, the cutter drive device of the sewing machine includes a power source 1, the power source includes a rotating shaft 11, the rotating shaft is provided with a transmission member 12, and a transmission rod 2, the transmission rod is connected to the transmission member, and at least part of the transmission rod is arranged inside the sewing machine housing 9 and connected to the cutter connecting rod 91 of the sewing machine and used to drive the cutter connecting rod to move up and down. The power source can be a servo motor, and a transmission member is arranged on its rotating shaft. A cam or a connecting seat can be arranged on the rotating shaft, and the transmission member is arranged thereon. The transmission member can be a slider, and then a slide groove cooperating with the slider can be arranged on the transmission rod. One end of the transmission rod extends into the interior of the sewing machine housing and is connected to the cutter connecting rod, and thereby drives the cutter connecting rod to move. A mounting groove can be arranged on the transmission rod to connect the cutter connecting rod.

[0021] In this embodiment, as shown in the figure, the power source is a servo motor, which can better control the cutter connecting rod.

[0022] In this embodiment, as shown in the figure, a connecting seat 111 is installed on the rotating shaft, and the transmission member is a slider provided on the connecting seat. The slider can be rectangular or cylindrical, etc., and is used to drive the transmission rod to move.

[0023] In this embodiment, as shown in the figure, the transmission rod is provided with a sliding groove 21 that slidably cooperates with the sliding block.

[0024] In this embodiment, as shown in the figure, it also includes a guide plate 3 installed in the sewing machine housing, the guide plate is provided with a guide groove 31, and the transmission rod is provided with a guide block 22 that slides with the guide groove. The guide plate can be installed in the sewing machine housing by fasteners, the guide rod is provided with a guide groove, and the guide block of the transmission rod extends into it to guide the moving track of the transmission rod.

[0025] In this embodiment, as shown in the figure, the transmission rod is provided with a mounting groove 23 for the cutter connecting rod to be installed. After the cutter connecting rod is installed, it can be fixed by screws or the like.

[0026] In this embodiment, as shown in the figure, a fastening screw is installed on the slider, and the fastening screw includes a rod and a cap 4, the rod is connected to the slider, and the cap 4 is arranged on the outer wall of the slide slot. The cap plays a role of limiting and can prevent falling off.

[0027] In this embodiment, as shown in the figure, a mounting plate 5 is also included, the power source is mounted on the mounting plate, and the mounting plate is used to connect with the outer wall of the sewing machine housing. The power source can be mounted on the mounting plate by fasteners, and then the mounting plate is mounted on the sewing machine housing by fasteners. The mounting plate can be a U-shaped or L-shaped plate.

[0028] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. A cutter drive device for a sewing machine, characterized in that: include A power source (1), the power source comprising a rotating shaft (11), the rotating shaft being provided with a transmission member (12), A transmission rod (2) is connected to the transmission member, and at least a portion of the transmission rod is disposed inside a sewing machine housing (9) and is connected to a cutter connecting rod (91) of the sewing machine and is used to drive the cutter connecting rod to move up and down.

2. The cutter drive device for a sewing machine according to claim 1, characterized in that: The power source is a servo motor.

3. The cutter driving device for a sewing machine according to claim 1, characterized in that: A connecting seat (111) is mounted on the rotating shaft, and the transmission member is a sliding block provided on the connecting seat.

4. The cutter drive device for a sewing machine according to claim 3, characterized in that: The transmission rod is provided with a sliding groove (21) that slidably cooperates with the sliding block.

5. The cutter driving device for a sewing machine according to claim 1, characterized in that: It also includes a guide plate (3) installed in the sewing machine housing, the guide plate is provided with a guide groove (31), and the transmission rod is provided with a guide block (22) that slidably cooperates with the guide groove.

6. The cutter driving device for a sewing machine according to claim 1, characterized in that: The transmission rod is provided with a mounting groove (23) for mounting the cutter connecting rod.

7. The cutter drive device for a sewing machine according to claim 4, characterized in that: A fastening screw is mounted on the sliding block, the fastening screw comprising a rod portion and a cap portion (4), the rod portion being connected to the sliding block, and the cap portion (4) being arranged on the outer wall of the sliding groove.

8. The cutter drive device for a sewing machine according to any one of claims 1 to 7, characterized in that: It also includes a mounting plate (5), the power source is mounted on the mounting plate, and the mounting plate is used to be connected to the outer wall of the sewing machine housing.

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