CN111379096A - Driving mechanism and sewing machine with same - Google Patents

Abstract

The invention provides a driving mechanism and a sewing machine having the same, which are used to drive the upper shaft and the lower shaft of the sewing machine to rotate synchronously. Transmission; lower shaft drive assembly, the lower shaft drive assembly is connected with the lower shaft drive to drive the lower shaft for transmission; electronic control assembly, the electric control assembly is connected with the upper shaft drive assembly and the lower shaft drive assembly to detect the upper shaft. The rotational speed information and the rotational speed information of the lower shaft are adjusted, and the rotational speed of the upper shaft and the rotational speed of the lower shaft are adjusted, so as to solve the problem of complicated driving of the upper and lower shafts of the sewing machine in the prior art.

Description

Driving mechanism and sewing machine having the same

technical field

The invention relates to the field of sewing machine transmission, in particular to a driving mechanism and a sewing machine having the same.

Background technique

At present, the upper and lower shafts of the sewing machines used in the market are mostly connected by synchronous belts, and the upper and lower shafts are rotated synchronously through manual debugging.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a driving mechanism and a sewing machine having the same, so as to solve the problem of complicated driving of the upper and lower shafts of the sewing machine in the prior art.

In order to achieve the above object, according to one aspect of the present invention, a driving mechanism is provided for driving the upper shaft and the lower shaft of the sewing machine to rotate synchronously, the driving mechanism comprises: an upper shaft driving assembly, and the upper shaft driving assembly is drivingly connected with the upper shaft , to drive the upper shaft for transmission; the lower shaft drive assembly, the lower shaft drive assembly is connected with the lower shaft to drive the lower shaft for transmission; the electric control assembly, the electric control assembly is connected with both the upper shaft drive assembly and the lower shaft drive assembly, In order to detect the speed information of the upper shaft and the speed information of the lower shaft, and adjust the speed of the upper shaft and the speed of the lower shaft.

Further, the upper shaft drive assembly includes: an upper shaft drive motor, the upper shaft drive motor is installed on the casing of the sewing machine, and the upper shaft drive motor electronic control assembly is connected with the upper shaft drive motor to detect the output speed of the upper shaft drive motor. The speed of the upper shaft is detected, and the speed of the upper shaft is adjusted by controlling the upper shaft drive motor; the transmission device, the upper shaft drive motor is drivingly connected with the transmission device, and at least part of the transmission device is installed on the upper shaft, and the upper shaft drives the motor The upper shaft is driven by the transmission device for transmission.

Further, the transmission device includes: a transmission rod, which is installed on the output shaft of the upper shaft drive motor and connected to the upper shaft drive motor; a transmission wheel, which is installed on the upper shaft and matched with the transmission rod, and the upper shaft drives the motor The drive transmission rod rotates to drive the transmission wheel for transmission.

Further, the transmission device includes: a driving gear, which is drivingly connected to the upper shaft drive motor; a driven gear, which is mounted on the upper shaft, and meshes with the driving gear to drive the upper shaft for transmission.

Further, both the driving gear and the driven gear are conical teeth.

Further, the transmission device includes a coupling, the upper shaft driving motor is located at one end of the upper shaft and is drivingly connected with the upper shaft through the coupling, and the upper shaft driving motor drives the upper shaft to rotate through the coupling.

Further, the output shaft of the upper shaft driving motor is rotatably installed in the installation hole of the casing through a bearing, and a sealing device is arranged in the bearing to prevent the lubricating oil on the upper shaft driving motor from leaking into the body of the sewing machine.

Further, the sealing device includes: a bushing, which is arranged in the bearing hole of the bearing and sleeved on the output shaft of the upper shaft driving motor, so as to seal the bearing and the output shaft.

Further, the sealing device further includes: a sealing ring, the sealing ring is installed between the bushing and the output shaft, an annular groove is provided in the sleeve hole of the bushing, and at least part of the sealing ring is installed in the annular groove.

Further, the lower shaft drive assembly includes: a lower shaft drive motor, the lower shaft drive motor is installed on the casing of the sewing machine, and the electronic control assembly is connected with the lower shaft drive motor to detect the output speed of the lower shaft drive motor. The speed of the lower shaft is adjusted by controlling the lower shaft drive motor.

According to another aspect of the present invention, a sewing machine is provided, comprising a driving mechanism, wherein the driving mechanism is the above-mentioned driving mechanism.

Applying the technical solution of the present invention, the driving mechanism includes an upper shaft driving assembly, a lower shaft driving assembly and an electric control assembly, the upper shaft driving assembly is drivingly connected with the upper shaft to drive the upper shaft for transmission, and the lower shaft driving assembly is drivingly connected with the lower shaft , to drive the lower shaft for transmission, and the electronic control assembly is connected to the upper shaft drive assembly and the lower shaft drive assembly to detect the rotational speed information of the upper shaft and the lower shaft, and to carry out the rotational speed of the upper shaft and the lower shaft. The adjustment makes debugging simpler and more accurate, and solves the problem of the complex structure of the drive assemblies of the upper shaft and the lower shaft in the prior art.

Description of drawings

The accompanying drawings forming a part of the present application are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

FIG. 1 shows a schematic structural diagram of an embodiment of a drive mechanism according to the present invention;

Figure 2 shows an exploded view of an embodiment of a drive mechanism according to the invention;

Figure 3 shows an exploded view of an embodiment of a sealing device according to the present invention; and

Figure 4 shows a cross-sectional view of a bushing according to the present invention.

Wherein, the above-mentioned drawings include the following reference signs:

10, upper shaft; 20, lower shaft; 30, upper shaft drive assembly; 31, upper shaft drive motor; 32, bearing; 301, output shaft; 40, transmission device; 41, transmission rod; 42, transmission wheel; 33, sealing device; 34, bushing; 340, groove; 35, sealing ring; 50, electric control assembly.

Detailed ways

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The present invention provides a driving mechanism, please refer to FIG. 1 and FIG. 4, for driving the upper shaft 10 and the lower shaft 20 of the sewing machine to rotate synchronously, the driving mechanism includes: an upper shaft driving assembly 30, the upper shaft driving assembly 30 and the upper shaft 10 is drivingly connected to drive the upper shaft 10 for transmission; the lower shaft driving assembly, the lower shaft driving assembly is drivingly connected with the lower shaft 20 to drive the lower shaft 20 for transmission; the electric control assembly 50, the electric control assembly 50 and the upper shaft driving assembly 30 and the lower shaft drive assembly are connected to detect the rotational speed information of the upper shaft 10 and the rotational speed information of the lower shaft 20, and adjust the rotational speed of the upper shaft 10 and the rotational speed of the lower shaft 20.

The drive mechanism provided by the present invention includes an upper shaft drive assembly 30, a lower shaft drive assembly and an electronic control assembly 50. The upper shaft drive assembly 30 is drivingly connected with the upper shaft 10 to drive the upper shaft 10 for transmission, and the lower shaft drive assembly is connected with the lower shaft. The shaft 20 is drivingly connected to drive the lower shaft 20 for transmission, and the electronic control assembly 50 is connected to both the upper shaft driving assembly 30 and the lower shaft driving assembly to detect the rotational speed information of the upper shaft 10 and the rotational speed information of the lower shaft 20, and to determine the rotational speed information of the upper shaft 10 and the lower shaft 20. The rotational speed of the shaft 10 and the rotational speed of the lower shaft 20 are adjusted, which makes debugging simpler and more accurate, and solves the problem of the complex structure of the drive assemblies of the upper shaft 10 and the lower shaft 20 in the prior art.

As shown in FIG. 2, the upper shaft drive assembly 30 includes: an upper shaft drive motor 31, the upper shaft drive motor 31 is installed on the casing of the sewing machine, and the upper shaft drive motor electronic control assembly 50 is connected with the upper shaft drive motor 31 to pass Detecting the output rotation speed of the upper shaft drive motor 31 Detecting the rotation speed of the upper shaft 10, and adjusting the rotation speed of the upper shaft 10 by controlling the upper shaft driving motor 31; At least part of the transmission device 40 is mounted on the upper shaft 10 , and the upper shaft driving motor 31 drives the upper shaft 10 through the transmission device 40 for transmission. In this way, by separately setting the upper shaft driving motor 31 on the upper shaft, the rotation speed of the upper shaft 10 can be independently controlled by the upper shaft driving motor 31, eliminating the linkage mechanism between the lower shaft 20 and the upper shaft 10, and making the upper shaft of the sewing machine more stable. The driving structures of the lower shaft 10 and the lower shaft 20 are simple and easy to install.

Specifically, in the first embodiment provided by the present invention, the transmission device 40 includes: a transmission rod 41, the transmission rod 41 is installed on the output shaft 301 of the upper shaft drive motor 31 and connected to the upper shaft drive motor 31; the transmission wheel 42, The transmission wheel 42 is installed on the upper shaft 10 and cooperates with the transmission rod 41. The upper shaft drive motor 31 drives the transmission rod 41 to rotate to drive the transmission wheel 42 to transmit; A groove is provided along the axial direction which is matched with the threaded section. The upper shaft driving motor 31 drives the transmission rod 41 to rotate, so that the transmission rod 41 drives the transmission wheel 42 to drive the upper shaft 10 to rotate.

In the second embodiment provided by the present invention, the transmission device 40 includes: a driving gear, the driving gear is drivingly connected with the upper shaft drive motor 31; a driven gear, the driven gear is mounted on the upper shaft 10, and the driven gear is connected with the driving gear Engage with each other to drive the upper shaft 10 for transmission.

Preferably, both the driving gear and the driven gear are conical teeth.

In the third embodiment provided by the present invention, the transmission device 40 includes a coupling, the upper shaft driving motor 31 is located at one end of the upper shaft 10 and is drivingly connected to the upper shaft 10 through the coupling, and the upper shaft driving motor 31 is connected through the coupling The shaft drives the upper shaft 10 to rotate.

As shown in FIG. 3 and FIG. 4 , the output shaft 301 of the upper shaft driving motor 31 is rotatably installed in the mounting hole of the casing through the bearing 32 , and a sealing device 33 is arranged in the bearing 32 to prevent the upper shaft driving motor 31 The lubricating oil leaks into the body of the sewing machine.

Specifically, the sealing device 33 includes: a bushing 34 , the bushing 34 is arranged in the bearing hole of the bearing 32 and sleeved on the output shaft 301 of the upper shaft driving motor 31 to seal the bearing 32 and the output shaft 301 .

The sealing device 33 further includes: a sealing ring 35, the sealing ring 35 is installed between the bushing 34 and the output shaft 301, an annular groove 340 is provided in the sleeve hole of the bushing 34, and at least part of the sealing ring 35 is installed in the annular groove 340 for further sealing.

In the embodiment provided by the present invention, the lower shaft drive assembly includes a lower shaft drive motor, the lower shaft drive motor is installed on the casing of the sewing machine, and the electronic control assembly 50 is connected with the lower shaft drive motor, so as to detect the movement of the lower shaft drive motor by detecting The output rotational speed detects the rotational speed of the lower shaft 20 and adjusts the rotational speed of the lower shaft 20 by controlling the lower shaft driving motor.

In order to further seal between the upper shaft drive motor 31 and the casing, a second sealing ring is installed between the bearing 32 and the mounting hole of the casing. Specifically, the bearing 32 is provided with an annular groove, and at least Parts are installed in annular grooves to prevent oil leakage into the sewing machine casing.

The present invention also provides a sewing machine, which includes a driving mechanism, and the driving mechanism is the driving mechanism in the above embodiments.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

The drive mechanism provided by the present invention includes an upper shaft drive assembly 30, a lower shaft drive assembly and an electronic control assembly 50. The upper shaft drive assembly 30 is drivingly connected with the upper shaft 10 to drive the upper shaft 10 for transmission, and the lower shaft drive assembly is connected with the lower shaft. The shaft 20 is drivingly connected to drive the lower shaft 20 for transmission, and the electronic control assembly 50 is connected to both the upper shaft driving assembly 30 and the lower shaft driving assembly to detect the rotational speed information of the upper shaft 10 and the rotational speed information of the lower shaft 20, and to determine the rotational speed information of the upper shaft 10 and the lower shaft 20. Adjusting the rotational speed of the shaft 10 and the rotational speed of the lower shaft 20 makes debugging simpler and more accurate, and solves the problem of complex structures of the drive assemblies of the upper shaft 10 and the lower shaft 20 in the prior art.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1. A drive mechanism for driving an upper shaft (10) and a lower shaft (20) of a sewing machine in synchronous rotation, characterized in that it comprises:

the upper shaft driving assembly (30) is in driving connection with the upper shaft (10) so as to drive the upper shaft (10) to transmit;

the lower shaft driving component is in driving connection with the lower shaft (20) so as to drive the lower shaft (20) to transmit;

the electronic control assembly (50) is connected with the upper shaft driving assembly (30) and the lower shaft driving assembly to detect the rotating speed information of the upper shaft (10) and the rotating speed information of the lower shaft (20) and adjust the rotating speed of the upper shaft (10) and the rotating speed of the lower shaft (20).

2. The drive mechanism of claim 1, wherein the upper shaft drive assembly (30) comprises:

the upper shaft driving motor (31), the upper shaft driving motor (31) is installed on a shell of the sewing machine, the electric control component (50) of the upper shaft driving motor is connected with the upper shaft driving motor (31) so as to detect the rotating speed of the upper shaft (10) by detecting the output rotating speed of the upper shaft driving motor (31), and the rotating speed of the upper shaft (10) is adjusted by controlling the upper shaft driving motor (31);

the transmission device (40), the upper shaft driving motor (31) is in driving connection with the transmission device (40), at least part of the transmission device (40) is installed on the upper shaft (10), and the upper shaft driving motor (31) drives the upper shaft (10) to transmit through the transmission device (40).

3. The drive mechanism according to claim 2, wherein the transmission (40) comprises:

the transmission rod (41), the transmission rod (41) is installed on the output shaft (301) of the upper shaft driving motor (31) and is connected with the upper shaft driving motor (31);

the transmission device comprises a transmission wheel (42), the transmission wheel (42) is installed on the upper shaft (10) and matched with the transmission rod (41), and the upper shaft driving motor (31) drives the transmission rod (41) to rotate so as to drive the transmission wheel (42) to transmit.

4. The drive mechanism according to claim 2, wherein the transmission (40) comprises:

the driving gear is in driving connection with the upper shaft driving motor (31);

the driven gear is arranged on the upper shaft (10) and meshed with the driving gear to drive the upper shaft (10) to transmit.

5. The drive mechanism as recited in claim 4, wherein the drive gear and the driven gear are tapered teeth.

6. The drive mechanism according to claim 2, wherein the transmission (40) comprises:

the upper shaft driving motor (31) is located at one end of the upper shaft (10) and is in driving connection with the upper shaft (10) through the coupler, and the upper shaft driving motor (31) drives the upper shaft (10) to rotate through the coupler.

7. The drive mechanism according to claim 2, wherein the output shaft (301) of the upper shaft drive motor (31) is rotatably mounted in the mounting hole of the housing through a bearing (32), and a sealing device (33) is provided in the bearing (32) to prevent the lubricating oil on the upper shaft drive motor (31) from leaking into the sewing machine body.

8. The drive mechanism according to claim 7, wherein the sealing device (33) comprises:

the bushing (34) is arranged in a bearing hole of the bearing (32) and sleeved on the output shaft (301) of the upper shaft driving motor (31) so as to seal the bearing (32) and the output shaft (301).

9. The drive mechanism according to claim 8, wherein the sealing device (33) further comprises:

the sealing ring (35) is installed between the bushing (34) and the output shaft (301), an annular groove (340) is arranged in a sleeve hole of the bushing (34), and at least part of the sealing ring (35) is installed in the annular groove (340).

10. The drive mechanism as recited in claim 1, wherein the lower shaft drive assembly comprises:

the lower shaft driving motor is installed on a shell of the sewing machine, the electric control assembly (50) is connected with the lower shaft driving motor, so that the rotating speed of the lower shaft (20) is detected through detecting the output rotating speed of the lower shaft driving motor, and the rotating speed of the lower shaft (20) is adjusted through controlling the lower shaft driving motor.

11. A sewing machine comprising a drive mechanism, characterized in that the drive mechanism is as claimed in any one of claims 1 to 10.

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