Improved sewing equipment machine head structure

Abstract

The utility model relates to the technical field of sewing equipment, in particular to an improved sewing equipment machine head structure which comprises a machine frame and an executing mechanism installed on the machine frame, and the executing mechanism is used for limiting or processing external fabric. The rack is provided with a hollow arm and a driving mechanism arranged in the hollow arm, and the driving mechanism is used for driving the executing mechanism to move; the hollow arm is provided with a bottom wall, a first flat plate side wall, a second flat plate side wall and a top wall, the first flat plate side wall and the second flat plate side wall are located on the two sides of the bottom wall respectively and arranged in parallel, the top wall is used for being matched with the flat plate side walls, and the bottom wall, the first flat plate side wall and the second flat plate side wall define a rectangular hollow cavity. And the top wall is used for covering the opening of the hollow cavity to package the driving motor in the hollow cavity. The rectangular hollow cavity is formed in the hollow arm, and the driving motor is arranged in the hollow cavity, so that the utilization rate of the internal space of the rack is improved, the size of the rack is reduced, and the material cost of the rack is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing equipment, and in particular discloses an improved sewing equipment head structure. Background Art

[0002] Template sewing machine refers to sewing equipment that combines clothing template technology for practical application.

[0003] The template sewing machine generally includes a frame, a driving device, a needle bar mechanism, and a presser foot mechanism, wherein the needle bar mechanism and the presser foot mechanism are arranged on the head of the frame. During the sewing process, the driving device drives the upper shaft and the lower shaft to rotate at the same time, the upper shaft drives the needle bar mechanism to move up and down, and the lower shaft drives the presser foot mechanism to move. There are the following defects: the position arrangement of the presser foot mechanism and the driving motor in the head is unreasonable, and the swing of the presser foot is adjusted by a connecting rod, which requires multiple connecting rods and cranks to cooperate and adjust. There are many parts and complex structures. The space required inside the head is large, resulting in a large volume of the head and the part connected to the frame, and the material cost of the head and the frame is increased. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a sewing equipment head structure with a more compact structure, higher transmission efficiency, more stable operation and smaller volume.

[0005] To achieve the above-mentioned purpose, the utility model provides an improved sewing equipment head structure, including a frame, an actuator mounted on the frame, the actuator is used to limit or process external fabrics; the frame has a hollow arm and a driving mechanism arranged in the hollow arm, the driving mechanism is used to drive the actuator to move; the hollow arm has a bottom wall, a first flat plate side wall and a second flat plate side wall respectively located on both sides of the bottom wall and arranged in parallel, and a top wall used to cooperate with the flat plate side wall, the bottom wall, the first flat plate side wall, and the second flat plate side wall are arranged to form a rectangular hollow cavity, the driving mechanism includes a driving motor mounted on the bottom wall and / or the flat plate side wall and located in the hollow cavity, and the top wall is used to cover the opening of the hollow cavity to encapsulate the driving motor in the hollow cavity. The utility model improves the internal space utilization of the frame, reduces the machine volume, and saves the material cost of the frame by arranging a rectangular hollow cavity in the hollow arm and placing the driving motor in the hollow cavity.

[0006] Furthermore, the actuator is a presser foot mechanism installed on the frame, and the presser foot mechanism is used to press the fabric during sewing; the presser foot mechanism includes a presser foot shaft and a transmission assembly used in conjunction with a driving motor, the presser foot shaft is movably installed on the frame, the driving motor drives the presser foot shaft to move via the transmission assembly, and the presser foot shaft is used to drive the external presser foot to press the fabric. By driving the driving motor to drive the presser foot shaft to move via the transmission assembly, the lifting and lowering of the sewing foot is controlled, the structure is more compact, the transmission efficiency is higher, and the operation is more stable.

[0007] Furthermore, the transmission assembly includes a first gear connected to the presser foot shaft and a second gear connected to the driving motor, and the first gear and the second gear are meshed with each other. The driving motor drives the presser foot shaft via the first gear and the second gear, so that the presser foot swings more stably, and the transmission structure is simple and compact, which reduces the space occupied by the transmission assembly in the frame and improves the space utilization efficiency.

[0008] Furthermore, the first gear includes a connecting portion connected to the presser foot shaft, a fan-shaped portion arranged on the connecting portion, the arc end of the fan-shaped portion meshes with the second wheel body, and the center of the fan-shaped portion is located on the axis of the presser foot shaft. The fan-shaped portion makes the first gear simple and compact, reduces the space occupied by the transmission assembly in the frame, and improves the space utilization efficiency.

[0009] Furthermore, the radius of the sector is greater than the radius of the second gear. The rotation speed of the driving motor is reduced, so that the presser mechanism works more stably.

[0010] Furthermore, the drive motor is accommodated in the frame, and the drive motor is located in the middle of the frame, thereby improving the utilization rate of the internal space of the frame, reducing the machine volume, and saving the material cost of the frame.

[0011] Furthermore, the frame is provided with a mounting plate, the drive motor is fixedly connected to the mounting plate, and the drive motor is connected to the bottom wall and / or the flat side wall of the frame via the mounting plate. The arrangement of the mounting plate makes the connection between the drive motor and the frame more stable, and the mounting plate can better adjust the position of the drive motor and reasonably arrange the internal space of the frame.

[0012] Furthermore, the mounting plate includes a first plate portion, a second plate portion, and a bent portion connecting the first plate portion and the second plate portion, the first plate portion is fixedly connected to the frame via bolts, and the drive motor is fixedly connected to the second plate portion via bolts. The bolt connection increases the connection stability between the drive motor and the frame, and facilitates the installation, disassembly and maintenance of the drive motor.

[0013] Furthermore, the driving motor is a stepping motor.

[0014] Furthermore, a shaft sleeve is provided on the presser foot shaft, and the presser foot shaft is rotatably connected to the frame via the shaft sleeve. The shaft sleeve reduces the friction between the presser foot shaft and the frame, thereby extending the service life of the presser foot shaft.

[0015] The beneficial effects of the utility model are as follows: the driving motor drives the presser foot shaft via the first gear and the second gear, so that the swing of the presser foot is more stable, and the transmission structure is simple and compact, reducing the space occupied by the transmission component in the frame and improving the space utilization efficiency; the fan-shaped part makes the first gear simple and compact, and at the same time reduces the rotation speed of the driving motor, so that the operation of the presser foot mechanism is more stable; the driving motor is located in the middle of the frame, which improves the utilization rate of the internal space of the frame, reduces the machine volume, and saves the material cost of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an improved sewing equipment head structure of the utility model;

[0017] Figure 2 It is an exploded schematic diagram of the hollow arm of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the presser foot mechanism of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the first gear of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the mounting plate of the utility model.

[0021] Reference numerals include:

[0022] 1—Frame 2—Presser foot mechanism 3—Drive motor

[0023] 4—presser foot shaft 5—transmission assembly 6—first gear

[0024] 7—Second gear 8—Connecting part 9—Fan-shaped part

[0025] 10—mounting plate 11—first plate portion 12—second plate portion

[0026] 13 - sleeve 14 - hollow arm 15 - hollow cavity DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0028] See also Figures 1 to 4As shown, an improved sewing equipment head structure of the utility model includes a frame 1, an actuator installed on the frame 1, and the actuator is used to limit or process external fabrics; the frame 1 has a hollow arm 14 and a driving mechanism arranged in the hollow arm 14, and the driving mechanism is used to drive the actuator to move; the hollow arm 14 has a bottom wall, a first flat plate side wall and a second flat plate side wall respectively located on both sides of the bottom wall and arranged in parallel, and a top wall used to cooperate with the flat plate side wall, and the bottom wall, the first flat plate side wall, and the second flat plate side wall are surrounded to form a rectangular hollow cavity 15, and the driving mechanism includes a driving motor 3 installed on the bottom wall or / and the flat plate side wall and located in the hollow cavity 15, and the top wall is used to cover the opening of the hollow cavity 15 to encapsulate the driving motor 3 in the hollow cavity 15. The utility model improves the internal space utilization of the frame 1, reduces the volume, and saves the material cost of the frame 1 by arranging a rectangular hollow cavity 15 in the hollow arm 14 and placing the driving motor 3 in the hollow cavity 15.

[0029] like Figure 2 , Figure 3 As shown, the actuator is a presser foot mechanism 2 installed on the frame 1, and the presser foot mechanism 2 is used to press the fabric during sewing; the presser foot mechanism 2 includes a presser foot shaft 4 and a transmission assembly 5 used in conjunction with a drive motor 3, and the presser foot shaft 4 is movably installed on the frame 1. The drive motor 3 drives the presser foot shaft 4 to move via the transmission assembly 5, and the presser foot shaft 4 is used to drive the external presser foot to press the fabric. By driving the drive motor 3 to drive the presser foot shaft 4 to move via the transmission assembly 5, the lifting and lowering of the sewing foot is controlled, so that the structure is more compact, the transmission efficiency is higher, and the operation is more stable.

[0030] like Figure 3 As shown, the transmission assembly 5 includes a first gear 6 connected to the presser foot shaft 4 and a second gear 7 connected to the driving motor 3, and the first gear 6 and the second gear 7 are meshed with each other. The driving motor 3 drives the presser foot shaft 4 via the first gear 6 and the second gear 7, so that the presser foot swings more stably, and the transmission structure is simple and compact, which reduces the space occupied by the transmission assembly 5 in the frame 1 and improves the space utilization efficiency.

[0031] In a further technical solution, Figure 4 As shown, the first gear 6 includes a connecting portion 8 connected to the presser foot shaft 4, a sector 9 provided on the connecting portion 8, an arc end of the sector 9 meshes with the second wheel body, and the center of the sector 9 is located on the axis of the presser foot shaft 4. The sector 9 makes the first gear 6 simple and compact, reduces the space occupied by the transmission assembly 5 in the frame 1, and improves the space utilization efficiency.

[0032] In a further technical solution, the radius of the sector 9 is greater than the radius of the second gear 7. The rotation speed of the driving motor 3 is reduced to make the presser mechanism 2 work more stably.

[0033] The drive motor 3 is accommodated in the frame 1, and the drive motor 3 is located in the middle of the frame 1. The internal space utilization of the frame 1 is improved, the machine volume is reduced, and the material cost of the frame 1 is saved.

[0034] The frame 1 is provided with a mounting plate 10, the drive motor 3 is fixedly connected to the mounting plate 10, and the drive motor 3 is connected to the bottom wall or / and the flat side wall of the frame 1 via the mounting plate 10. The arrangement of the mounting plate 10 makes the indirect connection between the drive motor 3 and the frame 1 more stable, and the mounting plate 10 can better adjust the position of the drive motor 3 and reasonably arrange the internal space of the frame 1.

[0035] In a further technical solution, Figure 5 As shown, the mounting plate 10 includes a first plate portion 11, a second plate portion 12, and a bent portion connecting the first plate portion 11 and the second plate portion 12. The first plate portion 11 is fixedly connected to the frame 1 via bolts, and the drive motor 3 is fixedly connected to the second plate portion 12 via bolts. The bolt connection increases the connection stability between the drive motor 3 and the frame 1, and facilitates the installation, disassembly and maintenance of the drive motor 3.

[0036] In a further technical solution, the drive motor 3 is a stepper motor.

[0037] like Figure 3 As shown, the presser foot shaft 4 is provided with a shaft sleeve 13, and the presser foot shaft 4 is rotatably connected to the frame 1 via the shaft sleeve 13. The shaft sleeve 13 reduces the friction between the presser foot shaft 4 and the frame 1, and prolongs the service life of the presser foot shaft 4.

[0038] In the preferred technical solution, the two ends of the first plate portion 11 that are far away from each other are respectively connected to the two sides of the frame 1, thereby increasing the connection stability between the mounting plate 10 and the frame 1, avoiding excessive vibration amplitude when the drive motor 3 is working and increasing the stability of the rigid transmission component 5; at the same time, the lateral strength of the frame 1 is enhanced.

[0039] In this embodiment, the driving motor 3 is connected to the bottom wall and / or the flat side wall of the frame 1 via the mounting plate 10, so as to improve the utilization rate of the internal space of the frame 1, reduce the machine volume, and save the material cost of the frame 1. The driving motor 3 is connected to the mounting plate 10 via bolts. The driving motor 3 drives the presser foot shaft 4 to rotate relative to the frame 1 via the first gear 6 and the second gear 7. The arc-shaped end of the fan-shaped portion 9 on the first gear 6 is meshed with the second gear 7, so that the rotation speed of the presser foot shaft 4 is reduced to make the presser foot mechanism 2 work stably. The rotating presser foot shaft 4 drives the external presser foot to rise and fall, and presses the fabric during sewing to facilitate sewing. The driving motor 3 drives the presser foot shaft 4 via the first gear 6 and the second gear 7, so that the presser foot swings more stably, and the transmission structure is simple and compact, which reduces the space occupied by the transmission component 5 in the frame 1 and improves the space utilization efficiency.

[0040] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An improved sewing machine head structure, comprising a frame (1) and an actuator mounted on the frame (1), the actuator being used for limiting or processing external fabric; characterized in that: The frame (1) comprises a hollow arm (14) and a driving mechanism arranged in the hollow arm (14), wherein the driving mechanism is used to drive the actuator to move; The hollow arm (14) comprises a bottom wall, a first flat plate side wall and a second flat plate side wall respectively located on both sides of the bottom wall and arranged in parallel, and a top wall used to cooperate with the flat plate side wall; the bottom wall, the first flat plate side wall, and the second flat plate side wall are arranged to form a rectangular hollow cavity (15); the driving mechanism comprises a driving motor (3) mounted on the bottom wall and / or the flat plate side wall and located in the hollow cavity (15); and the top wall is used to cover the opening of the hollow cavity (15) to encapsulate the driving motor (3) in the hollow cavity (15).

2. The improved sewing machine head structure according to claim 1, characterized in that: The actuator is a presser foot mechanism (2) mounted on a frame (1), the presser foot mechanism (2) being used to press fabric during sewing; the presser foot mechanism (2) comprises a presser foot shaft (4) and a transmission assembly (5) used in conjunction with a drive motor (3); the presser foot shaft (4) is movably mounted on the frame (1), the drive motor (3) drives the presser foot shaft (4) to move via the transmission assembly (5), and the presser foot shaft (4) is used to drive an external presser foot to press fabric.

3. The improved sewing machine head structure according to claim 2, characterized in that: The transmission assembly (5) comprises a first gear (6) connected to the presser foot shaft (4) and a second gear (7) connected to the drive motor (3); the first gear (6) and the second gear (7) are meshed with each other.

4. The improved sewing machine head structure according to claim 3 is characterized in that: The first gear (6) comprises a connecting portion (8) connected to the presser foot shaft (4), and a sector-shaped portion (9) provided on the connecting portion (8), the arc-shaped end of the sector-shaped portion (9) meshing with the second wheel body, and the center of the sector-shaped portion (9) is located on the axis of the presser foot shaft (4).

5. The improved sewing machine head structure according to claim 4 is characterized in that: The radius of the sector-shaped portion (9) is greater than the radius of the second gear (7).

6. The improved sewing machine head structure according to claim 1, characterized in that: The drive motor (3) is accommodated in the frame (1), and the drive motor (3) is located in the middle of the frame (1).

7. The improved sewing machine head structure according to claim 1 is characterized in that: The frame (1) is provided with a mounting plate (10), the drive motor (3) is fixedly connected to the mounting plate (10), and the drive motor (3) is connected to the bottom wall and / or the flat plate side wall of the frame (1) via the mounting plate (10).

8. The improved sewing machine head structure according to claim 7, characterized in that: The mounting plate (10) comprises a first plate portion (11), a second plate portion (12), and a bent portion connecting the first plate portion (11) and the second plate portion (12); the first plate portion (11) is fixedly connected to the frame (1) via bolts; and the drive motor (3) is fixedly connected to the second plate portion (12) via bolts.

9. The improved sewing machine head structure according to claim 1, characterized in that: The driving motor (3) is a stepping motor.

10. The improved sewing machine head structure according to claim 2, characterized in that: The presser foot shaft (4) is provided with a shaft sleeve (13), and the presser foot shaft (4) is rotatably connected to the frame (1) via the shaft sleeve (13).

Images