Servo motor for direct-driven sewing machine and use method of servo motor

Abstract

The invention provides a servo motor for a direct-drive sewing machine and a using method thereof, and relates to the field of servo motors, the servo motor comprises an action rod, the action rod is inserted in a mounting rack, the problems that an existing servo motor does not have an adaptive heat dissipation structure, heat dissipation can only be conducted through natural cooling, and the heat dissipation efficiency is low are solved, and the service life of the servo motor is prolonged. The heat dissipation assembly can determine whether to participate in heat dissipation or not according to the working temperature of the servo motor, so that the heat dissipation assembly cannot be started when the servo motor does not reach the optimal working temperature, it is guaranteed that the working temperature of the servo motor rapidly rises to the optimal temperature, and when the working temperature of the servo motor is larger than the optimal working temperature, the heat dissipation assembly does not start. The heat dissipation assembly can be started under the action of the regulation and control assembly to dissipate heat for the servo motor, so that stable use of the servo motor is guaranteed, all the operations are automatically completed, the heat dissipation assembly is selectively connected with the servo motor for transmission without the help of external driving equipment, and use is flexible and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of servo motors, and particularly to a servo motor for a direct-drive sewing machine and its usage method. Background Art

[0002] A sewing machine is a machine that forms one or more stitches on a sewing material with one or more sewing threads to interweave or sew together one or more layers of sewing materials. With the development of technology, currently sewing machines generally use electric motors for driving, and direct-drive servo motors have been applied to sewing machines because they do not require belt drives.

[0003] However, for the currently existing servo motors for direct-drive sewing machines, they do not have an adaptable heat dissipation structure. The most suitable operating temperature of the motor is between thirty degrees and fifty degrees (there are slight differences between motors of different types and models). During the use of the servo motor, heat is generated, and it can only rely on natural cooling for heat dissipation. The heat dissipation efficiency is low, and if the heat is not discharged in time, it will cause the direct-drive servo motor to malfunction, affect the normal operation of the sewing machine, shorten the life of the motor, and have poor stability and low practicality. Summary of the Invention

[0004] In view of this, the present invention provides a servo motor for a direct-drive sewing machine and its usage method, which has a heat dissipation component. The heat dissipation component can determine whether to participate in heat dissipation according to the operating temperature of the servo motor. Thus, when the servo motor does not reach the optimal operating temperature, the heat dissipation component will not start, ensuring that the operating temperature of the servo motor quickly rises to the optimal temperature. When the operating temperature of the servo motor is greater than the optimal operating temperature, the heat dissipation component can be started under the action of a regulation component to dissipate heat for the servo motor, thereby ensuring the stable use of the servo motor. The above operations are all automated, and the heat dissipation component is selectively connected and driven with the servo motor without the need to rely on external driving devices, making it flexible and convenient to use. At the same time, the regulation component can also manually force the heat dissipation component to close, so as to be able to adapt to the use of the device in different environments, with extremely strong flexibility, stability, adaptability, and practicality.

[0005] The present invention provides a servo motor for a direct-drive sewing machine and its usage method, specifically including: a servo motor, the servo motor is fixedly installed on the top of a mounting frame, and the mounting frame is fixedly installed inside the sewing machine body. A temperature sensor for monitoring the operating temperature of the servo motor is provided inside the frame body of the mounting frame; drive rods are provided at both ends of the servo motor, and the drive rod on the left side of the servo motor is connected to the drive shaft of the sewing machine. A drive gear is provided outside the drive rod on the right side of the servo motor, and drive teeth are provided inside the heat dissipation ring; a heat dissipation component, the heat dissipation component includes a heat dissipation ring, a synchronous ring, an action rod, and heat dissipation fan blades. The heat dissipation fan blades are fixedly installed on the outside of the heat dissipation ring, and the heat dissipation ring is inserted into the side of the synchronous ring. The synchronous ring is rotatably connected to the side of the action rod, and the action rod is inserted into the mounting frame; a control component, the control component includes a drive push rod, a retaining frame, a functional gear, and a switching column. The drive push rod is fixedly installed inside the mounting frame, and one end of the push rod of the drive push rod is fixedly installed on the side of the retaining frame. The functional gear is rotatably connected inside the retaining frame, and the retaining frame is inserted into the mounting frame. The switching column is inserted into the retaining frame.

[0006] Further, a synchronous rod is provided on the side of the ring body of the heat dissipation ring, and the cross-section of the rod body of the synchronous rod is "T" shaped. The rod body of the synchronous rod passes through the ring body of the synchronous ring.

[0007] Further, a docking top spring is provided outside the synchronous rod, and both ends of the docking top spring respectively abut against the side of the synchronous ring and the side of the heat dissipation ring.

[0008] Further, a reset tension spring is provided inside the rod body of the action rod, and both ends of the reset tension spring are respectively fixedly connected inside the action rod and inside the mounting frame.

[0009] Further, a functional rack is provided at the bottom of the rod body of the action rod, and the teeth of the functional rack are engaged with the teeth of the functional gear for transmission.

[0010] Further, a positioning block with a regular polygon cross-section is provided in the middle of the column body of the switching column, and a positioning groove is provided inside the retaining frame. The positioning block is inserted into the positioning groove.

[0011] Further, a locking gear is provided on the side of the positioning block, and a locking tooth groove is provided inside the functional gear. The locking gear is inserted into the locking tooth groove.

[0012] Further, two positioning grooves arranged axially along the switching column are provided on the outside of the column body of the switching column, and a positioning convex column is provided inside the retaining frame. A positioning top spring is provided on the side of the positioning convex column, and both ends of the positioning top spring are respectively fixedly connected to the side of the positioning convex column and inside the retaining frame. One end of the positioning convex column is inserted into the positioning groove.

[0013] Beneficial effects

[0014] 1. The heat dissipation component can determine whether to participate in heat dissipation according to the operating temperature of the servo motor. Thus, when the servo motor does not reach the optimal operating temperature, the heat dissipation component will not start, ensuring that the operating temperature of the servo motor quickly rises to the optimal temperature. When the operating temperature of the servo motor is higher than the optimal temperature, the heat dissipation component can be started under the action of the regulation component to dissipate heat for the servo motor, thereby ensuring the stable use of the servo motor. All of the above operations are completed automatically, and the heat dissipation component is selectively connected and driven with the servo motor without the need for external driving equipment, making it flexible and convenient to use. At the same time, the regulation component can also manually and forcibly turn off the heat dissipation component, so as to be able to adapt to the use of the device in different environments, improving the flexibility, adaptability, stability and practicability of the device.

[0015] 2. When the device is in the reset state, the heat dissipation component can determine whether to participate in heat dissipation according to the operating temperature of the servo motor. The operating temperature of the servo motor can be monitored in real time through the temperature sensor. When the servo motor does not reach the optimal operating temperature, the driving push rod does not move at all, and the driving tooth groove disengages from the outside of the driving gear. Thus, when the servo motor rotates at this time, it will not drive the heat dissipation component to dissipate heat. When the operating temperature of the servo motor is higher than the optimal temperature, at this time the temperature sensor transmits the temperature signal to the control device, and the control device controls the driving push rod to push outwards. Since in the reset state, the locking gear is inserted into the inside of the locking tooth groove, and the positioning block of the switching column makes the switching column unable to rotate automatically under the positioning action of the positioning groove. Thus, the functional gear cannot rotate at this time. Thus, at this time, under the meshing and clamping relationship of the teeth of the functional gear and the functional rack, when the driving push rod is pushed out, it can drive the action rod to move outwards, so that the synchronous ring and the heat dissipation ring are synchronously pushed out. During the movement of the heat dissipation ring, the driving tooth groove can be inserted into the outside of the driving gear. Thus, thereafter, when the servo motor rotates, it can synchronously drive the heat dissipation ring to rotate, thereby realizing the function of rolling up the air flow through the heat dissipation fan blades. It is convenient to use, has a high degree of automation, and is extremely flexible.

[0016] 3. Due to the existence of the synchronous rod and the docking top spring, when the heat dissipation ring is pushed out, the driving tooth groove can always be stably docked with the driving gear, and the phenomenon of device jamming will not occur. When the driving tooth groove and the teeth of the driving gear are misaligned when the heat dissipation ring is pushed out, at this time the heat dissipation ring will not continue to move and compress the docking top spring to store energy until when the servo motor drives the driving gear to rotate and the tooth groove of the driving tooth groove is aligned with the teeth of the driving gear, it can automatically realize the docking action under the action of the docking top spring, and the use is stable.

[0017] 4. The heat dissipation component can manually and forcibly release the transmission relationship between the servo motor and the heat dissipation component regardless of its state. When it is necessary to manually and forcibly release the transmission relationship between the servo motor and the heat dissipation component, simply pull the switching column outwards. After the switching column is pulled, the locking gear disengages from the inside of the locking tooth groove, so that the function gear can rotate idly inside the cage thereafter. That is, when the driving push rod is pushed out thereafter, the function gear can rotate idly and will not drive the action rod to move through the function rack. Moreover, if the switching column is pulled when the heat dissipation component is participating in heat dissipation, the heat dissipation component can automatically reset under the action of the reset tension spring to forcibly release the transmission relationship between the servo motor and the heat dissipation component. It is stable in use, flexible in regulation, and can be adapted to be used in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0020] In the drawings:

[0021] Figure 1 is the overall structural schematic diagram of the present invention.

[0022] Figure 2 is the internal structural schematic diagram of the present invention in the reset state.

[0023] Figure 3 is the structural schematic diagram of the disassembled heat dissipation component of the present invention.

[0024] Figure 4 is the structural schematic diagram of the disassembled regulation component of the present invention.

[0025] Figure 5 is the structural schematic diagram of the present invention when the heat dissipation component participates in heat dissipation (starts).

[0026] Figure 6 is the present invention when pulling Figure 2 the internal structural schematic diagram after the switching column in.

[0027] Figure 7 is the present invention Figure 2 the enlarged structural schematic diagram of part A in.

[0028] Figure 8 is the present invention Figure 5 the enlarged structural schematic diagram of part B in.

[0029] Figure 9 is the present invention Figure 6 the enlarged structural schematic diagram of part C in.

[0030] List of reference numerals

[0031] 1. Servo motor; 101. Driving gear; 2. Mounting frame; 3. Heat dissipation component; 301. Heat dissipation ring; 3011. Driving tooth groove; 3012. Synchronous rod; 3013. Docking top spring; 302. Synchronous ring; 303. Action rod; 3031. Reset tension spring; 3032. Functional rack; 304. Heat dissipation fan blade; 4. Regulation component; 401. Driving push rod; 402. Retaining frame; 4021. Positioning groove; 4022. Positioning convex column; 4023. Positioning top spring; 403. Functional gear; 4031. Locking tooth groove; 404. Switching column; 4041. Positioning block; 4042. Locking gear; 4043. Positioning groove. Detailed implementation manners

[0032] In the following, the technical solutions of the embodiments of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention.

[0033] Embodiment: Please refer to Figures 1 to 9 as shown in

[0034] The present invention provides a servo motor for a direct-drive sewing machine and its usage method, including a servo motor 1, the servo motor 1 is fixedly installed on the top of the mounting frame 2, and the mounting frame 2 is fixedly installed inside the sewing machine body. A temperature sensor for monitoring the working temperature of the servo motor 1 is provided inside the frame of the mounting frame 2; driving rods are provided at both ends of the servo motor 1, and the driving rod on the left side of the servo motor 1 is connected to the driving shaft of the sewing machine. A driving gear 101 is provided outside the driving rod on the right side of the servo motor 1, and a driving tooth groove 3011 is provided inside the heat dissipation ring 301; a heat dissipation component 3, the heat dissipation component 3 includes a heat dissipation ring 301, a synchronous ring 302, an action rod 303 and a heat dissipation fan blade 304. The heat dissipation fan blade 304 is fixedly installed outside the heat dissipation ring 301, and the heat dissipation ring 301 is inserted into the side surface of the synchronous ring 302. The synchronous ring 302 is rotatably connected to the side surface of the action rod 303, and the action rod 303 is inserted into the inside of the mounting frame 2; a regulation component 4, the regulation component 4 includes a driving push rod 401, a retaining frame 402, a functional gear 403 and a switching column 404. The driving push rod 401 is fixedly installed inside the mounting frame 2, and one end of the push rod of the driving push rod 401 is fixedly installed on the side surface of the retaining frame 402. The functional gear 403 is rotatably connected inside the retaining frame 402, and the retaining frame 402 is inserted into the inside of the mounting frame 2. The switching column 404 is inserted into the inside of the retaining frame 402.

[0035] The servo motor 1 and the temperature sensor are electrically connected to an external power supply and a control device, and their specific structures and working principles are existing mature technologies and will not be elaborated here.

[0036] Among them, a locking gear 4042 is provided on the side of the positioning block 4041, and a locking tooth groove 4031 is provided inside the functional gear 403. The locking gear 4042 is inserted into the locking tooth groove 4031. During use, in the reset state, the heat dissipation component 3 can determine whether to participate in heat dissipation according to the operating temperature of the servo motor 1. The operating temperature of the servo motor 1 can be monitored in real time through a temperature sensor. When the servo motor 1 does not reach the optimal operating temperature, the driving push rod 401 does not move at all, and the driving tooth groove 3011 disengages from the outside of the driving gear 101. Therefore, when the servo motor 1 rotates at this time, it will not drive the heat dissipation component 3 to dissipate heat. When the operating temperature of the servo motor 1 is greater than the optimal operating temperature, at this time, the temperature sensor transmits the temperature signal to the control device, and the control device controls the driving push rod 401 to push outwards. Since in the reset state, the locking gear 4042 is inserted into the locking tooth groove 4031, a positioning block 4041 with a regular polygon cross-section is provided in the middle of the column body of the switching column 404, and a positioning groove 4021 is provided inside the cage 402. The positioning block 4041 is inserted into the positioning groove 4021, and the positioning block 4041 of the switching column 404 makes the switching column 404 unable to rotate self under the positioning action of the positioning groove 4021. Therefore, the functional gear 403 cannot rotate at this time. A functional rack 3032 is provided at the bottom of the rod body of the action rod 303, and the functional rack 3032 engages and drives with the teeth of the functional gear 403. Therefore, at this time, under the engagement and clamping relationship between the teeth of the functional gear 403 and the functional rack 3032, when the driving push rod 401 is pushed out, it can drive the action rod 303 to move outwards, so that the synchronizing ring 302 and the heat dissipation ring 301 are synchronously pushed out. During the movement of the heat dissipation ring 301, the driving tooth groove 3011 can be inserted outside the driving gear 101. Therefore, thereafter, when the servo motor 1 rotates, it can synchronously drive the heat dissipation ring 301 to rotate, so as to realize the function of rolling up the air flow through the heat dissipation fan blades 304 for heat dissipation.

[0037] Among them, a synchronous rod 3012 is provided on the side of the ring body of the heat dissipation ring 301, and the cross-section of the rod body of the synchronous rod 3012 is "T"-shaped. The rod body of the synchronous rod 3012 passes through the ring body of the synchronous ring 302. An abutting top spring 3013 is provided outside the rod body of the synchronous rod 3012, and both ends of the abutting top spring 3013 respectively abut against the side of the synchronous ring 302 and the side of the heat dissipation ring 301. During use, due to the existence of the synchronous rod 3012 and the abutting top spring 3013, when the heat dissipation ring 301 is pushed out, the driving tooth groove 3011 can always be stably docked with the driving gear 101, and the phenomenon of device jamming will not occur. When the heat dissipation ring 301 is pushed out and the teeth of the driving tooth groove 3011 and the driving gear 101 are misaligned, at this time, the heat dissipation ring 301 will not continue to move and compress the abutting top spring 3013 to store energy until when the servo motor 1 drives the driving gear 101 to rotate and the tooth groove of the driving tooth groove 3011 is aligned with the teeth of the driving gear 101, it can automatically realize the docking action under the action of the abutting top spring 3013, and the use is stable.

[0038] Among them, a return tension spring 3031 is provided inside the rod body of the action rod 303, and both ends of the return tension spring 3031 are respectively fixedly connected inside the action rod 303 and inside the mounting bracket 2. During use, no matter what state the heat dissipation assembly 3 is in, the transmission relationship between the servo motor 1 and the heat dissipation assembly 3 can be manually and forcibly released. When it is necessary to manually and forcibly release the transmission relationship between the servo motor 1 and the heat dissipation assembly 3, only need to pull the switching column 404 outwards. After the switching column 404 is pulled, the locking gear 4042 disengages from the inside of the locking tooth groove 4031, so that the function gear 403 can idle inside the cage 402 afterwards, that is, when the driving push rod 401 is pushed out afterwards, the function gear 403 can idle and will not drive the action rod 303 to move through the function rack 3032. And if the switching column 404 is pulled when the heat dissipation assembly 3 is participating in heat dissipation, the heat dissipation assembly 3 can automatically reset under the action of the return tension spring 3031 to forcibly release the transmission relationship between the servo motor 1 and the heat dissipation assembly 3. The use is stable, the regulation is flexible, and it can be adapted to be used in different environments.

[0039] Among them, two positioning grooves 4043 arranged axially along the switching column 404 are provided on the outer side of the column body of the switching column 404, a positioning convex column 4022 is provided inside the cage 402, and a positioning top spring 4023 is provided on the side of the positioning convex column 4022. Both ends of the positioning top spring 4023 are respectively fixedly connected to the side of the positioning convex column 4022 and inside the cage 402. One end of the positioning convex column 4022 is inserted into the inside of the positioning groove 4043. During use, the positioning convex column 4022 can position the use position of the switching column 404 through the cooperation with different positioning grooves 4043 under the action of the positioning top spring 4023.

[0040] Specific usage and function of this embodiment: In the present invention, the servo motor 1 can provide working power for the sewing machine. When the device is in the reset state, the heat dissipation component 3 can determine whether to participate in heat dissipation according to the working temperature of the servo motor 1. The temperature sensor can monitor the working temperature of the servo motor 1 in real time. When the servo motor 1 does not reach the optimal working temperature, the driving push rod 401 is driven to have no action, and the driving tooth groove 3011 disengages from the outside of the driving gear 101. Thus, when the servo motor 1 rotates at this time, it will not drive the heat dissipation component 3 to dissipate heat. When the working temperature of the servo motor 1 is greater than the optimal working temperature, the temperature sensor transmits the temperature signal to the control device at this time. The control device controls the driving push rod 401 to push outwards. Since in the reset state, the locking gear 4042 is inserted into the locking tooth groove 4031, and the positioning block 4041 of the switching column 404 is under the positioning action of the positioning groove 4021, the switching column 404 cannot rotate by itself. Thus, the functional gear 403 cannot rotate at this time. Thus, under the tooth engagement and clamping relationship between the functional gear 403 and the functional rack 3032, when the driving push rod 401 is pushed out, it can drive the action rod 303 to move outwards. Thus, the synchronous ring 302 and the heat dissipation ring 301 are synchronously pushed out. During the movement of the heat dissipation ring 301, the driving tooth groove 3011 can be inserted into the outside of the driving gear 101. Thus, thereafter, when the servo motor 1 rotates, it can synchronously drive the heat dissipation ring 301 to rotate, thereby realizing the function of rolling up the airflow for heat dissipation through the heat dissipation fan blade 304. Due to the existence of the synchronous rod 3012 and the docking top spring 3013, when the heat dissipation ring 301 is pushed out, the driving tooth groove 3011 can always stably dock with the driving gear 101, and there will be no phenomenon of device jamming. When the heat dissipation ring 301 is pushed out and the teeth of the driving tooth groove 3011 and the driving gear 101 are misaligned, the heat dissipation ring 301 will not continue to move and compress the docking top spring 3013 to store energy until when the servo motor 1 drives the driving gear 101 to rotate and the tooth groove of the driving tooth groove 3011 aligns with the teeth of the driving gear 101, it can automatically realize the docking action under the action of the docking top spring 3013. No matter what state the heat dissipation component 3 is in, the transmission relationship between the servo motor 1 and the heat dissipation component 3 can be manually and forcibly released. When it is necessary to manually and forcibly release the transmission relationship between the servo motor 1 and the heat dissipation component 3, only need to pull the switching column 404 outwards. After the switching column 404 is pulled, the locking gear 4042 disengages from the inside of the locking tooth groove 4031. Thus, thereafter, the functional gear 403 can rotate idly inside the cage 402, that is, when the driving push rod 401 is pushed out thereafter, the functional gear 403 can rotate idly and will not drive the action rod 303 to move through the functional rack 3032. And if the switching column 404 is pulled after the heat dissipation component 3 is participating in heat dissipation, the heat dissipation component 3 can automatically reset under the action of the reset tension spring 3031, thereby forcibly releasing the transmission relationship between the servo motor 1 and the heat dissipation component 3.

Claims

1. A servo motor for a direct-drive sewing machine, characterized in that, Including: A servo motor (1), the servo motor (1) is fixedly installed on the top of the mounting bracket (2), and the mounting bracket (2) is fixedly installed inside the sewing machine body. A temperature sensor for monitoring the working temperature of the servo motor (1) is provided inside the frame of the mounting bracket (2); driving rods are provided at both ends of the servo motor (1), and the driving rod on the left side of the servo motor (1) is connected to the driving shaft of the sewing machine. A driving gear (101) is provided outside the driving rod on the right side of the servo motor (1), and a driving tooth groove (3011) is provided inside the heat dissipation ring (301); A heat dissipation assembly (3), the heat dissipation assembly (3) includes a heat dissipation ring (301), a synchronous ring (302), an action rod (303) and a heat dissipation fan blade (304). The heat dissipation fan blade (304) is fixedly installed outside the heat dissipation ring (301), and the heat dissipation ring (301) is inserted into the side of the synchronous ring (302). The synchronous ring (302) is rotatably connected to the side of the action rod (303), and the action rod (303) is inserted into the inside of the mounting bracket (2); A regulation assembly (4), the regulation assembly (4) includes a driving push rod (401), a cage (402), a function gear (403) and a switching column (404). The driving push rod (401) is fixedly installed inside the mounting bracket (2), and the push rod end of the driving push rod (401) is fixedly installed on the side of the cage (402). The function gear (403) is rotatably connected inside the cage (402), and the cage (402) is inserted into the inside of the mounting bracket (2). The switching column (404) is inserted into the inside of the cage (402).

2. The servo motor for a direct-drive sewing machine according to claim 1, wherein: A synchronous rod (3012) is provided on the side of the ring body of the heat dissipation ring (301), and the cross section of the rod body of the synchronous rod (3012) is "T" shaped. The rod body of the synchronous rod (3012) passes through the ring body of the synchronous ring (302).

3. The servo motor for a direct-drive sewing machine according to claim 2, characterized in that: A docking top spring (3013) is provided outside the synchronous rod (3012), and both ends of the docking top spring (3013) respectively abut against the side of the synchronous ring (302) and the side of the heat dissipation ring (301).

4. The servo motor for a direct drive sewing machine according to claim 1, wherein: A return tension spring (3031) is provided inside the rod body of the action rod (303), and both ends of the return tension spring (3031) are respectively fixedly connected inside the action rod (303) and inside the mounting bracket (2).

5. The servo motor for a direct-drive sewing machine according to claim 1, wherein: A function rack (3032) is provided at the bottom of the rod body of the action rod (303), and the function rack (3032) engages and drives with the teeth of the function gear (403).

6. The servo motor for a direct-drive sewing machine according to claim 1, wherein: A positioning block (4041) with a regular polygon cross section is provided in the middle of the column body of the switching column (404), and a positioning groove (4021) is provided inside the cage (402). The positioning block (4041) is inserted into the inside of the positioning groove (4021).

7. The servo motor for a direct-drive sewing machine according to claim 6, characterized in that: A locking gear (4042) is provided on the side of the positioning block (4041), and a locking tooth groove (4031) is provided inside the function gear (403). The locking gear (4042) is inserted into the inside of the locking tooth groove (4031).

8. The servo motor method for a direct drive sewing machine according to claim 1, characterized in that: On the outer surface of the column body of the switching column (404), there are two positioning grooves (4043) arranged axially along the switching column (404). Inside the cage (402), there is a positioning convex post (4022). On the side surface of the positioning convex post (4022), there is a positioning spring (4023). The two ends of the positioning spring (4023) are fixedly connected to the side surface of the positioning convex post (4022) and the inside of the cage (402) respectively. One end of the positioning convex post (4022) is inserted into the inside of the positioning groove (4043).

9. The usage method of a servo motor for a direct-drive sewing machine according to claim 1, characterized in that: Including the following:

1. The servo motor (1) can provide working power for the sewing machine; 2. The heat dissipation component (3) can decide whether to participate in heat dissipation according to the working temperature of the servo motor (1). The working temperature of the servo motor (1) can be monitored in real time through the temperature sensor; 3. When the servo motor (1) does not reach the optimal working temperature, the driving push rod (401) does not move at all, and the driving tooth groove (3011) disengages from the outside of the driving gear (101). Therefore, when the servo motor (1) rotates at this time, the heat dissipation component (3) will not be driven to dissipate heat; 4. When the working temperature of the servo motor (1) is higher than the optimal working temperature, at this time the temperature sensor transmits the temperature signal to the control device. The control device controls the driving push rod (401) to push outwards. Since in the reset state, the locking gear (4042) is inserted into the locking tooth groove (4031), and the positioning block (4041) of the switching column (404) makes the switching column (404) unable to rotate automatically under the positioning action of the positioning groove (4021). Therefore, at this time the functional gear (403) cannot rotate either. Thus, under the meshing and clamping relationship of the teeth of the functional gear (403) and the functional rack (3032), when the driving push rod (401) is pushed out, it can drive the action rod (303) to move outwards. Therefore, the synchronizing ring (302) and the heat dissipation ring (301) are synchronously pushed out. During the movement of the heat dissipation ring (301), the driving tooth groove (3011) can be inserted into the outside of the driving gear (101). Therefore, after that, when the servo motor (1) rotates, it can synchronously drive the heat dissipation ring (301) to rotate, thereby realizing the function of dissipating heat by rolling up the air flow through the heat dissipation fan blades (304); 5. Due to the existence of the synchronizing rod (3012) and the docking spring (3013), when the heat dissipation ring (301) is pushed out, the driving tooth groove (3011) can always be stably docked with the driving gear (101), and the phenomenon of device jamming will not occur. When the driving tooth groove (3011) and the teeth of the driving gear (101) are misaligned when the heat dissipation ring (301) is pushed out, at this time the heat dissipation ring (301) will not continue to move and compress the docking spring (3013) to store energy until when the servo motor (1) drives the driving gear (101) to rotate, when the tooth groove of the driving tooth groove (3011) is aligned with the teeth of the driving gear (101), it can automatically realize the docking action under the action of the docking spring (3013); VI. The heat dissipation component (3) can manually and forcibly release the transmission relationship between the servo motor (1) and the heat dissipation component (3) regardless of its state. When it is necessary to manually and forcibly release the transmission relationship between the servo motor (1) and the heat dissipation component (3), just pull the switching column (404) outwards. After the switching column (404) is pulled, the locking gear (4042) disengages from the inside of the locking tooth groove (4031), so that the function gear (403) can rotate idly inside the cage (402) thereafter. That is, when the driving push rod (401) is pushed out thereafter, the function gear (403) can rotate idly and will not drive the action rod (303) to move through the function rack (3032). And if the switching column (404) is pulled when the heat dissipation component (3) is participating in heat dissipation, the heat dissipation component (3) can automatically reset under the action of the return spring (3031) to forcibly release the transmission relationship between the servo motor (1) and the heat dissipation component (3).

Images