Pattern curve transmission mechanism of sewing machine

Abstract

The utility model provides a pattern curve transmission mechanism of a sewing machine, which relates to the technical field of sewing machine equipment and comprises a sewing machine fixing rod, a bolt penetrates through one end of the sewing machine fixing rod, the outer surface of the bolt is in threaded connection with a mounting frame, and a shielding plate is fixed at one end of the mounting frame. The pattern curve transmission mechanism and the pattern curve transmission mechanism are arranged outside the sewing machine, the pattern curve transmission mechanism can be additionally arranged only by detaching the original cloth pressing plate and the original threading needle from the sewing machine and installing and replacing the modified cloth pressing plate with the transmission mechanism and the installation rod with the movable threading needle, the operation difficulty is low, and the operation efficiency is high. And refitting of the sewing machine is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machine equipment, in particular to a pattern curve transmission mechanism for a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing materials are interwoven or sewn together. The sewing machine can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, and products such as leather, plastic, and paper. The stitches are neat, beautiful, flat, and firm, and the sewing speed is fast and easy to use.

[0003] However, in the prior art, most of the existing sewing machines can only meet the needs of straight line sewing. If you want to sew pattern curves, you need to manually swing the cloth back and forth, which is troublesome. If you want to make it convenient, you need to add a transmission mechanism that can sew pattern curves to the sewing machine. However, generally, such transmission mechanisms are often placed inside the sewing machine, and some sewing machines do not have a reserved installation space inside, which increases the difficulty of installing the transmission mechanism. At the same time, it requires relatively high technical skills, making it inconvenient to modify the sewing machine. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art: generally, such transmission mechanisms are often placed inside the sewing machine, and some sewing machines do not have a reserved installation space inside, which increases the difficulty of placing the transmission mechanism and requires relatively high technical strength, making it inconvenient to modify the sewing machine.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sewing machine pattern curve transmission mechanism, including a sewing machine fixing rod, one end of the sewing machine fixing rod is penetrated by a bolt, and the outer surface of the bolt is threadedly connected to a mounting frame, one end of the mounting frame is fixed with a shielding plate, and the upper surface of the shielding plate is fixed with a micro motor, the output shaft of the micro motor and the shielding plate penetrate and are fixed with a No. 1 gear, and a rotating shaft is rotated on one side of the shielding plate, a No. 2 gear is fixed on the rotating shaft, and the No. 2 gear is meshed with the No. 1 gear, one end of the rotating shaft is fixed with a rotating plate, and a traction member is rotated on one side of the rotating plate, a modified cloth pressing plate is fixed at one end of the shielding plate, and a swinging groove is provided at the front end of the modified cloth pressing plate, a swinging plate is slidably provided on the modified cloth pressing plate, and a movable groove is provided on the swinging plate, and the movable groove is movably connected with the traction member, one end of the swinging plate is penetrated by a movable threading needle, and one end of the movable threading needle is fixed to a sliding plate, a connecting frame is slidably connected to the sliding plate, and a mounting rod is fixed to the top of the connecting frame.

[0006] As a preferred embodiment, the rotation diameter of the rotating plate is adapted to the length of the connecting frame slide rail and the length of the swing groove of the modified cloth pressing plate.

[0007] As a preferred implementation, one end of the bolt is threadedly connected with a nut.

[0008] As a preferred implementation, a protective cover is provided on the outer surface of the micro motor, and the protective cover is fixedly connected to the shielding plate.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] The utility model, with the help of a micro motor, a first gear and a second gear, can conveniently control the rotating plate to perform circular rotating activities. During this period, the traction member will move in the movable groove, thereby driving the swing plate to pull the movable threading needle to perform reciprocating motion on the modified cloth pressing plate, thereby achieving the effect of sewing pattern curves by the sewing machine. These transmission mechanisms are all arranged on the outside of the sewing machine, and only the original cloth pressing plate and the original threading needle need to be removed from the sewing machine, and the modified cloth pressing plate with the transmission mechanism and the mounting rod with the movable threading needle can be installed and replaced. Moreover, the operation difficulty is relatively low, and the modification of the sewing machine is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the overall structure of a pattern curve transmission mechanism for a sewing machine provided by the utility model;

[0012] Figure 2 A schematic diagram of the structure around the threading needle of a sewing machine pattern curve transmission mechanism provided by the utility model;

[0013] Figure 3 A schematic diagram of the structure around a shielding plate of a sewing machine pattern curve transmission mechanism provided by the utility model;

[0014] Figure 4 The utility model provides a structural schematic diagram of the cloth pressing plate and the surroundings of the pattern curve transmission mechanism of a sewing machine.

[0015] Legend:

[0016] 1. Sewing machine fixing rod; 2. Bolt; 3. Mounting frame; 4. Nut; 5. Shielding plate; 6. Micro motor; 7. Protective cover; 8. Gear No. 1; 9. Gear No. 2; 10. Rotating plate; 11. Traction piece; 12. Modified fabric pressing plate; 13. Swinging plate; 14. Movable threading needle; 15. Sliding plate; 16. Connecting frame; 17. Mounting rod. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example 1

[0019] like Figure 1-4 As shown, the utility model provides a technical solution: a sewing machine pattern curve transmission mechanism, including a sewing machine fixing rod 1, the sewing machine fixing rod 1 is fixedly connected to the sewing machine, one end of the sewing machine fixing rod 1 is penetrated by a bolt 2, and the outer surface of the bolt 2 is threadedly connected with a mounting frame 3, through the setting of the bolt 2, it is convenient to install and disassemble the mounting frame 3, the shielding plate 5 and the modified cloth pressing plate 12 on the sewing machine fixing rod 1, one end of the mounting frame 3 is fixed with a shielding plate 5, and the shielding plate 5 protects the first gear 8 and the second gear 9 to prevent them from being negatively affected by the outside world The shielding plate 5 is provided with a micro motor 6 fixed on its upper surface. The micro motor 6 is used as a power source to conveniently control the rotation of the No. 1 gear 8 and the No. 2 gear 9. The output shaft of the micro motor 6 and the shielding plate 5 penetrate and are fixed with the No. 1 gear 8. A rotating shaft is rotated on one side of the shielding plate 5. The No. 2 gear 9 is fixed on the rotating shaft, and the No. 2 gear 9 is meshed with the No. 1 gear 8. A rotating plate 10 is fixed on one end of the rotating shaft, and a traction member 11 is rotated on one side of the rotating plate 10. Through the micro motor 6, the No. 1 gear 8 and the No. 2 gear 9, With the help of the utility model, it is convenient to control the rotating plate 10 to perform circular rotation. During this period, the traction member 11 will move in the movable groove of the swing plate 13. A modified cloth pressing plate 12 is fixed to one end of the shielding plate 5, and a swinging groove is provided at the front end of the modified cloth pressing plate 12. A swinging plate 13 is slidably arranged on the modified cloth pressing plate 12, and a movable groove is provided on the swinging plate 13. The movable groove is movably connected with the traction member 11. A movable threading needle 14 is penetrated at one end of the swinging plate 13. Through the movement of the traction member 11 in the movable groove, the swinging plate 13 is driven to pull the movable threading needle 14 in the modified cloth pressing plate 12. The cloth pressing plate 12 makes reciprocating motion, thereby realizing the effect of sewing pattern curves by the sewing machine, and one end of the movable threading needle 14 is fixed with a sliding plate 15, and a connecting frame 16 is slidably connected to the sliding plate 15, and a mounting rod 17 is fixed to the top of the connecting frame 16, and the mounting rod 17 is used to install and replace the original threading needle. The connecting frame 16 limits the upward movement distance of the mounting rod 17 when the sewing machine is in normal operation to ensure that the movable threading needle 14 is in the connection range of the swing plate 13 and stably reciprocates. At the same time, the stability of the movement of the movable threading needle 14 is ensured with the help of the sliding plate 15.

[0020] Example 2

[0021] like Figure 1-4 As shown, the rotation diameter of the rotating plate 10 is matched with the length of the slide rail of the connecting frame 16 and the length of the swing groove of the modified cloth pressing plate 12, thereby ensuring that the reciprocating motion of the movable threading needle 14 is within the movable range of the slide rail of the connecting frame 16 and the swing groove of the modified cloth pressing plate 12, avoiding affecting the reciprocating motion of the movable threading needle 14, and one end of the bolt 2 is threadedly connected with a nut 4, and with the help of the nut 4, the connection of the bolt 2 on the mounting frame 3 is effectively reinforced, and the outer surface of the micro motor 6 is provided with a protective cover 7, and the protective cover 7 is fixedly connected to the shielding plate 5, and the protective cover 7 plays a protective role in protecting the micro motor 6 and reducing the damage caused by the micro motor 6 when it is bumped.

[0022] Working principle:

[0023] like Figure 1-4 As shown, when the utility model is used, the user first removes the original threading needle and the original fabric pressing plate from the sewing machine, and then installs the mounting rod 17 at the position of the original threading needle. With the help of the bolt 2 and the nut 4, the mounting frame 3, the shielding plate 5 and the modified fabric pressing plate 12 are stably installed at the position of the sewing machine fixed rod 1 to replace the original fabric pressing plate.

[0024] When the sewing machine is required to sew pattern curves, the user needs to start the micro motor 6 in the protective cover 7. The start of the micro motor 6 drives the rotation of the No. 1 gear 8, and the rotation of the No. 1 gear 8 drives the rotation of the No. 2 gear 9. The No. 2 gear 9 drives the rotating plate 10 to rotate. The rotation of the rotating plate 10 drives the traction member 11 to move back and forth in the movable groove of the swing plate 13. When the traction member 11 is active, it will pull the swing plate 13 to reciprocate on the modified cloth pressing plate 12. The activity of the swing plate 13 drives the movable threading needle 14 and the sliding plate 15 to reciprocate at the slide rail of the connecting frame 16, thereby meeting the requirements of the sewing machine for pattern curve sewing.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A sewing machine pattern curve transmission mechanism, comprising a sewing machine fixing rod (1), characterized in that: A bolt (2) is passed through one end of the sewing machine fixing rod (1), and the outer surface of the bolt (2) is threadedly connected to a mounting frame (3), a shielding plate (5) is fixed to one end of the mounting frame (3), and a micro motor (6) is fixed to the upper surface of the shielding plate (5), an output shaft of the micro motor (6) and the shielding plate (5) pass through and are fixed with a first gear (8), and a rotating shaft is rotatably provided on one side of the shielding plate (5), a second gear (9) is fixed on the rotating shaft, and the second gear (9) is meshed with the first gear (8), a rotating plate (10) is fixed to one end of the rotating shaft, and one side of the rotating plate (10) rotates A traction member (11) is provided, a modified cloth pressing plate (12) is fixed to one end of the shielding plate (5), and a swinging groove is provided at the front end of the modified cloth pressing plate (12), a swinging plate (13) is slidably provided on the modified cloth pressing plate (12), and a movable groove is provided on the swinging plate (13), and the movable groove is movably connected to the traction member (11), a movable threading needle (14) is passed through one end of the swinging plate (13), and a sliding plate (15) is fixed to one end of the movable threading needle (14), and a connecting frame (16) is slidably connected to the sliding plate (15), and a mounting rod (17) is fixed to the top end of the connecting frame (16).

2. A sewing machine pattern curve transmission mechanism according to claim 1, characterized in that: The rotation diameter of the rotating plate (10) is adapted to the length of the slide rail of the connecting frame (16) and the length of the swing groove of the modified material distribution pressing plate (12).

3. A sewing machine pattern curve transmission mechanism according to claim 1, characterized in that: One end of the bolt (2) is threadedly connected with a nut (4).

4. A sewing machine pattern curve transmission mechanism according to claim 1, characterized in that: The outer surface of the micro motor (6) is sleeved with a protective cover (7), and the protective cover (7) is fixedly connected to the shielding plate (5).

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