Electric control heat dissipation device for rotating shuttle

Abstract

A rotating shuttle electric control heat dissipation device is applied to a sewing device and a compressed air supply device. The sewing device comprises a sewing machine starting pedal, a sewing machine servo motor and a rotating shuttle, the rotating shuttle electric control heat dissipation device comprises a microprocessor, a first electromagnetic valve and a vortex tube, and the first electromagnetic valve is connected to the compressed air supply device and the vortex tube; when the microprocessor detects that the sewing machine starting pedal is pressed, the microprocessor drives the sewing machine servo motor to drive the rotating shuttle to rotate, and the microprocessor drives the first electromagnetic valve to enable compressed air provided by the compressed air supply device to flow into the vortex tube through the first electromagnetic valve. And the vortex tube utilizes the compressed air to generate cold air and outputs the cold air to the rotating shuttle. Therefore, the temperature of the rotating shuttle of the sewing machine can be effectively reduced.

Description

Technical Field

[0001] The invention relates to a heat dissipation device, in particular to an electric-controlled heat dissipation device for a rotary hook. Background Art

[0002] When a sewing machine with a rotary hook is working, the rotary hook rotates at a high speed, so the friction between the internal parts of the rotary hook is large, which increases the temperature of the rotary hook. Therefore, a lubricating device is usually provided to continuously provide lubricating oil to the rotary hook to reduce the temperature of the rotary hook. However, the lubricating oil provided by the lubricating device cannot effectively reduce the temperature of the rotary hook of the sewing machine, and this problem needs to be solved urgently. Summary of the invention

[0003] In order to solve the above problems, the object of the present invention is to provide an electronically controlled heat dissipation device for a rotary hook.

[0004] To achieve the above-mentioned purpose of the present invention, the rotary hook electric-controlled heat dissipation device of the present invention is applied to a sewing device and a compressed air supply device, the sewing device includes a sewing machine starting pedal, a sewing machine servo motor and a rotary hook, the rotary hook electric-controlled heat dissipation device includes: a microprocessor; a first solenoid valve, the first solenoid valve is electrically connected to the microprocessor, the first solenoid valve is connected to the compressed air supply device; and a vortex tube, the vortex tube is connected to the first solenoid valve, wherein when the microprocessor detects that the sewing machine starting pedal is pressed, the microprocessor drives the sewing machine servo motor to drive the rotary hook to rotate, and the microprocessor drives the first solenoid valve so that a compressed air provided by the compressed air supply device flows into the vortex tube through the first solenoid valve, and the vortex tube uses the compressed air to generate cold air and outputs the cold air toward the rotary hook.

[0005] The invention has the effect of effectively reducing the temperature of the rotary hook of the sewing machine.

[0006] In order to further understand the techniques, means and effects adopted by the present invention to achieve the predetermined objectives, please refer to the following detailed description and drawings of the present invention. It is believed that the objectives, features and characteristics of the present invention can be deeply and specifically understood thereby. However, the drawings are only provided for reference and illustration and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a block diagram of a basic embodiment of the rotary hook electronically controlled heat dissipation device of the present invention.

[0008] Figure 2 The diagram is an appearance diagram of some parts of the rotary hook electric-controlled heat dissipation device and some parts of the sewing device of the present invention.

[0009] Figure 3It is a block diagram of the first embodiment of the rotary hook electric control heat dissipation device of the present invention.

[0010] Figure 4 It is a state schematic diagram of the first embodiment of the first solenoid valve of the present invention, wherein the left side figure shows the state where the first solenoid valve is driven, and the right side figure shows the state where the first solenoid valve stops being driven.

[0011] Figure 5 This is an operation flow chart of the first embodiment of the rotary hook electronically controlled heat dissipation device of the present invention.

[0012] Figure 6 It is a block diagram of a second embodiment of the rotary hook electric control heat dissipation device of the present invention.

[0013] Figure 7 This is a state schematic diagram of the second embodiment of the first solenoid valve of the present invention, wherein the left side figure shows a state in which the microprocessor drives the first solenoid valve to open the first main air outlet and close the first secondary air outlet, and the right side figure shows a state in which the microprocessor stops driving the first solenoid valve to close the first main air outlet and open the first secondary air outlet.

[0014] Figure 8 This is an operation flow chart of the second embodiment of the rotary hook electric control heat dissipation device of the present invention.

[0015] Fig. 9 It is a block diagram of a third embodiment of the rotary hook electronically controlled heat dissipation device of the present invention.

[0016] Fig.10 Schematic diagram of the state of the second solenoid valve of the present invention, wherein the left side of the figure shows the state of the second solenoid valve being driven, and the right side of the figure shows the state of the second solenoid valve stopping being driven.

[0017] Fig.11 This is an operation flow chart of the third embodiment of the rotary hook electronically controlled heat dissipation device of the present invention.

[0018] Explanation of symbols in the accompanying drawings:

[0019] 10: Rotary hook electronically controlled heat dissipation device;

[0020] 20: sewing device;

[0021] 30: Compressed air supply device;

[0022] 102: microprocessor;

[0023] 104: first solenoid valve;

[0024] 106: vortex tube;

[0025] 108: cold air delivery pipe;

[0026] 110: throttle valve;

[0027] 112: second solenoid valve;

[0028] 202: sewing machine start pedal;

[0029] 204: sewing machine servo motor;

[0030] 206: rotary shuttle;

[0031] 302: compressed air;

[0032] 304: cold air;

[0033] 306: hot air;

[0034] 1042: first air inlet;

[0035] 1044: first main air outlet;

[0036] 1046: The first time I need to vent my anger;

[0037] 1062: cold air outlet;

[0038] 1064: compressed air inlet;

[0039] 1066: hot air outlet;

[0040] 1122: second air inlet;

[0041] 1124: second main air outlet;

[0042] 1126: The second time I need to vent my anger;

[0043] S502: step;

[0044] S504: step;

[0045] S506: step;

[0046] S508: step;

[0047] S802: step;

[0048] S804: step;

[0049] S806: step;

[0050] S808: step;

[0051] S1102: step;

[0052] S1104: step;

[0053] S1106: step;

[0054] S1108: step;

[0055] S1110: step. DETAILED DESCRIPTION

[0056] In this disclosure, many specific details are provided to provide a thorough understanding of the specific embodiments of the present invention; however, those skilled in the art should know that the present invention can still be practiced without one or more of these specific details; in other cases, well-known details are not shown or described to avoid obscuring the main technical features of the present invention. The technical content and detailed description of the present invention are described as follows with the accompanying drawings:

[0057] Please refer to Figure 1 , which is a block diagram of a basic embodiment of the rotary hook electric control heat dissipation device 10 of the present invention; and please also refer to Figure 2 , which is an appearance diagram of some parts of the rotary hook electric control heat dissipation device 10 and some parts of the sewing device 20 of the present invention; it should be noted that in order to Figure 2 More concise and clear, Figure 2 Only the appearance of some parts of the rotary hook electric control heat dissipation device 10 and the sewing device 20 is shown. The rotary hook electric control heat dissipation device 10 of the present invention is applied to a sewing device 20 and a compressed air supply device 30. The sewing device 20 includes a sewing machine start pedal 202, a sewing machine servo motor 204, a rotary hook 206 and any other parts not shown in the figure. Figure 1 and Figure 2 However, all the known components of a sewing machine are included in the rotary hook electric control heat dissipation device 10, which includes a microprocessor 102 (or a microcomputer), a first solenoid valve 104, a vortex tube 106, a cold air delivery tube 108, and a power supply circuit (not shown) for supplying power to each component of the rotary hook electric control heat dissipation device 10. Figure 1 and Figure 2 ), the vortex tube 106 includes a cold air outlet 1062, a compressed air inlet 1064 and a hot air outlet 1066. The first solenoid valve 104 is electrically connected to the microprocessor 102, the first solenoid valve 104 is connected (i.e., pipe-connected) to the compressed air supply device 30 and connected (i.e., pipe-connected) to the vortex tube 106 through the compressed air inlet 1064, and the vortex tube 106 is connected (i.e., pipe-connected) to the cold air delivery pipe 108 through the cold air outlet 1062.

[0058] When the microprocessor 102 detects (e.g., by a process not shown in Figure 1 and Figure 2 When the sewing machine start pedal 202 is pressed (for example, the user steps on the sewing machine start pedal 202), the microprocessor 102 drives (for example, through an input circuit not shown in FIG. 1 ), Figure 1 and Figure 2 The sewing machine servo motor 204 is driven by a servo motor driver (not shown) to drive the rotary hook 206 to rotate, and the microprocessor 102 drives (for example, by a servo motor driver not shown) Figure 1 and Figure 2 The first solenoid valve 104 is driven by an output circuit of the first solenoid valve 104 so that the compressed air 302 provided by the compressed air supply device 30 flows into the vortex tube 106 through the first solenoid valve 104 and the compressed air inlet 1064, and the vortex tube 106 utilizes the compressed air 302 to generate cold air 304 and outputs the cold air 304 toward the rotary shuttle 206 through the cold air outlet 1062 and the cold air delivery pipe 108, so as to reduce the temperature of the rotary shuttle 206, and at the same time, the vortex tube 106 generates hot air 306 and outputs the hot air 306 through the hot air outlet 1066, wherein the temperature of the cold air 304 is lower than the temperature of the compressed air 302, and the temperature of the hot air 306 is higher than the temperature of the compressed air 302.

[0059] Please refer to Figure 3 , which is a block diagram of a first embodiment of the rotary hook electric control heat dissipation device 10 of the present invention; Figure 3 The components shown are Figure 1 The components shown are the same, so for the sake of brevity, their description will not be repeated here; please also refer to Figure 4 , which is a state schematic diagram of the first embodiment of the first solenoid valve 104 of the present invention, Figure 3 The first solenoid valve 104 is shown as Figure 4 The first solenoid valve 104, wherein Figure 4 The left side of is the state where the first solenoid valve 104 is driven, and Figure 4 The right side of the figure shows the state where the first solenoid valve 104 stops being driven. The first solenoid valve 104 includes a first air inlet 1042, and the first air inlet 1042 is connected (i.e., pipe-connected) to the compressed air supply device 30 so that the first solenoid valve 104 receives the compressed air 302 provided by the compressed air supply device 30 through the first air inlet 1042.

[0060] Furthermore, please refer to Figure 3 and Figure 4 The first solenoid valve 104 further includes a first main air outlet 1044 and a first secondary air outlet 1046. The first main air outlet 1044 is connected (i.e., pipe-connected) to the compressed air inlet 1064 of the vortex tube 106, and the first secondary air outlet 1046 is closed. When the microprocessor 102 detects that the sewing machine start pedal 202 is pressed, the microprocessor 102 drives the first solenoid valve 104 (such as Figure 4) to open the first main air outlet 1044 so that the compressed air 302 provided by the compressed air supply device 30 flows into the vortex tube 106 through the first air inlet 1042, the first solenoid valve 104, the first main air outlet 1044 and the compressed air inlet 1064. When the microprocessor 102 detects that the sewing machine start pedal 202 is not pressed (for example, the user stops stepping on the sewing machine start pedal 202), the microprocessor 102 stops driving the sewing machine servo motor 204 to stop driving the rotary hook 206 to rotate, and the microprocessor 102 stops driving the first solenoid valve 104 (for example, the user stops stepping on the sewing machine start pedal 202). Figure 4 on the right side) to close the first main air outlet 1044 so that the compressed air 302 provided by the compressed air supply device 30 stops flowing into the vortex tube 106 through the first solenoid valve 104, and the vortex tube 106 stops using the compressed air 302 to generate the cold air 304 and stops outputting the cold air 304 toward the rotary shuttle 206.

[0061] Please refer to Figure 5 , which is an operation flow chart of the first embodiment of the rotary hook electric control heat dissipation device 10 of the present invention; and please also refer to Figure 3 The operation process of the first embodiment of the rotary hook electric control heat dissipation device 10 of the present invention comprises the following steps:

[0062] Step S502: The sewing device 20 is turned on; then, the operation flow enters step S504.

[0063] Step S504: Determine whether the sewing machine start pedal 202 is pressed forward; if yes, the operation flow enters step S506; if no, the operation flow enters step S508.

[0064] Step S506 : driving the sewing machine servo motor 204 to drive the rotary hook 206 to rotate, and driving the first solenoid valve 104 to make the vortex tube 106 output the cold air 304 toward the rotary hook 206 .

[0065] Step S508 : Stop driving the sewing machine servo motor 204 to stop driving the rotary hook 206 to rotate, and stop driving the first solenoid valve 104 to make the vortex tube 106 stop outputting the cold air 304 toward the rotary hook 206 .

[0066] Please refer to Figure 6 , which is a block diagram of a second embodiment of the rotary hook electric control heat dissipation device 10 of the present invention; Figure 6 The components shown are Figure 1 The components shown are the same, so for the sake of brevity, their description will not be repeated here; please also refer to Figure 7 , which is a state diagram of the second embodiment of the first solenoid valve 104 of the present invention, Figure 6 The first solenoid valve 104 is shown as Figure 7 The first solenoid valve 104, wherein Figure 7 The left side of is the state where the first solenoid valve 104 is driven, and Figure 7 The right side of the first electromagnetic valve 104 is in a state where the first electromagnetic valve 104 stops being driven. The rotary hook electronically controlled heat dissipation device 10 further includes a throttle valve 110 , which is connected to the first electromagnetic valve 104 and the compressed air inlet 1064 of the vortex tube 106 .

[0067] Furthermore, please refer to Figure 6 and Figure 7 The first solenoid valve 104 includes a first air inlet 1042, a first main air outlet 1044 and a first secondary air outlet 1046. The first air inlet 1042 is connected (i.e., connected by a pipeline) to the compressed air supply device 30 so that the first solenoid valve 104 receives the compressed air 302 provided by the compressed air supply device 30 through the first air inlet 1042. The first main air outlet 1044 is connected (i.e., connected by a pipeline) to the compressed air inlet 1064 of the vortex tube 106. The first secondary air outlet 1046 is connected to the throttle valve 110. When the microprocessor 102 detects that the sewing machine start pedal 202 is pressed, the microprocessor 102 drives the first solenoid valve 104 to open the first main air outlet 1044 and close the first secondary air outlet 1046 (e.g., Figure 7 ) so that the compressed air 302 provided by the compressed air supply device 30 flows into the vortex tube 106 through the first air inlet 1042, the first solenoid valve 104, the first main air outlet 1044 and the compressed air inlet 1064. When the microprocessor 102 detects that the sewing machine start pedal 202 is not pressed (for example, the user stops stepping on the sewing machine start pedal 202), the microprocessor 102 stops driving the sewing machine servo motor 204 to stop driving the rotary hook 206 to rotate, and the microprocessor 102 stops driving the first solenoid valve 104 to close the first main air outlet 1044 and open the first secondary air outlet 1046 (such as Figure 7) so that the compressed air 302 provided by the compressed air supply device 30 flows into the vortex tube 106 through the first air inlet 1042, the first solenoid valve 104, the first secondary air outlet 1046, the throttle valve 110 and the compressed air inlet 1064; the throttle valve 110 is used to reduce the flow rate of the compressed air 302 passing through the throttle valve 110, so the flow rate of the compressed air 302 delivered from the throttle valve 110 to the vortex tube 106 (at this time, the microprocessor 102 stops driving the first solenoid valve 104) will be less than the flow rate of the compressed air 302 delivered from the first main air outlet 1044 to the vortex tube 106 (at this time, the microprocessor 102 drives the first solenoid valve 104).

[0068] Please refer to Figure 8 , which is an operation flow chart of the second embodiment of the rotary hook electric control heat dissipation device 10 of the present invention; and please also refer to Figure 6 The operation process of the second embodiment of the rotary hook electric control heat dissipation device 10 of the present invention comprises the following steps:

[0069] Step S802: The sewing device 20 is turned on; then, the operation flow enters step S804.

[0070] Step S804: Determine whether the sewing machine start pedal 202 is pressed forward; if yes, the operation flow enters step S806; if no, the operation flow enters step S808.

[0071] Step S806 : driving the sewing machine servo motor 204 to drive the rotary hook 206 to rotate, and driving the first solenoid valve 104 to make the vortex tube 106 output the cold air 304 toward the rotary hook 206 .

[0072] Step S808: Stop driving the sewing machine servo motor 204 to stop driving the rotary hook 206 to rotate, and stop driving the first solenoid valve 104 to allow the vortex tube 106 to output less of the cold air 304 (ie, less than the cold air 304 output in step S806 ) toward the rotary hook 206 .

[0073] Please refer to Fig. 9 , which is a block diagram of a third embodiment of the rotary hook electric control heat dissipation device 10 of the present invention; Fig. 9 The components shown are Figure 1 The components shown are the same, so for the sake of brevity, their description will not be repeated here; please also refer to Fig.10 , which is a state diagram of the second solenoid valve 112 of the present invention, Fig. 9 The second solenoid valve 112 is shown as Fig.10 The second solenoid valve 112, wherein Fig.10The left side of is the state where the second solenoid valve 112 is driven, and Fig.10 The right side of is the state where the second solenoid valve 112 stops being driven; Fig. 9 The first solenoid valve 104 is shown as Figure 4 The rotary shuttle electronically controlled heat dissipation device 10 further includes a throttle valve 110 and a second solenoid valve 112, the throttle valve 110 is connected (i.e., connected by a pipeline) to the compressed air inlet 1064 of the vortex tube 106, the second solenoid valve 112 is electrically connected to the microprocessor 102, and the second solenoid valve 112 is connected to the throttle valve 110 and connected (i.e., connected by a pipeline) to the compressed air supply device 30.

[0074] Furthermore, please refer to Figure 4 , Fig. 9 and Fig.10 The first solenoid valve 104 includes a first air inlet 1042, a first main air outlet 1044 and a first secondary air outlet 1046. The first air inlet 1042 is connected (i.e., connected by a pipeline) to the compressed air supply device 30 so that the first solenoid valve 104 receives the compressed air 302 provided by the compressed air supply device 30 through the first air inlet 1042. The first main air outlet 1044 is connected (i.e., connected by a pipeline) to the compressed air inlet 1064 of the vortex tube 106. The second solenoid valve 112 includes a second air inlet 1122, a second main air outlet 1124 and a second secondary air outlet 1126. The second air inlet 1122 is connected (i.e., pipe-connected) to the compressed air supply device 30 so that the second solenoid valve 112 receives the compressed air 302 provided by the compressed air supply device 30 through the second air inlet 1122. The second main air outlet 1124 is connected to the throttle valve 110, and the second secondary air outlet 1126 is closed. When the microprocessor 102 detects that the sewing machine start pedal 202 is pressed, the microprocessor 102 drives the first solenoid valve 104 to open the first main air outlet 1044 (such as Figure 4 ) so that the compressed air 302 provided by the compressed air supply device 30 flows into the vortex tube 106 through the first air inlet 1042, the first solenoid valve 104, the first main air outlet 1044 and the compressed air inlet 1064, and the microprocessor 102 stops driving the second solenoid valve 112 to close the second main air outlet 1124 (such as Fig.10When the microprocessor 102 detects that the sewing machine start pedal 202 is not pressed (for example, the user stops pressing the sewing machine start pedal 202), the microprocessor 102 stops driving the sewing machine servo motor 204 to stop driving the rotary hook 206 to rotate, and the microprocessor 102 drives the second solenoid valve 112 to open the second main air outlet 1124 (for example, Fig.10 ) so that the compressed air 302 provided by the compressed air supply device 30 flows into the vortex tube 106 through the second air inlet 1122, the second solenoid valve 112, the second main air outlet 1124, the throttle valve 110 and the compressed air inlet 1064, and the microprocessor 102 stops driving the first solenoid valve 104 to close the first main air outlet 1044 (such as Figure 4 ); the throttle valve 110 is used to reduce the flow rate of the compressed air 302 passing through the throttle valve 110, so the flow rate of the compressed air 302 delivered from the throttle valve 110 to the vortex tube 106 (at this time, the microprocessor 102 drives the second solenoid valve 112 and stops driving the first solenoid valve 104) will be less than the flow rate of the compressed air 302 delivered from the first main air outlet 1044 to the vortex tube 106 (at this time, the microprocessor 102 drives the first solenoid valve 104 and stops driving the second solenoid valve 112). When the sewing device 20 is turned off, the first solenoid valve 104 and the second solenoid valve 112 stop being driven (such as Figure 4 The right side and Fig.10 to the right of the vortex tube 106 to stop outputting the cold air 304 toward the rotary shuttle 206.

[0075] Please refer to Fig.11 , which is an operation flow chart of the third embodiment of the rotary hook electric control heat dissipation device 10 of the present invention; and please also refer to Fig. 9 The operation process of the third embodiment of the rotary hook electric control heat dissipation device 10 of the present invention comprises the following steps:

[0076] Step S1102: Determine whether the sewing device 20 is turned on; if so, the operation flow enters step S1104; if not, the operation flow enters step S1110.

[0077] Step S1104: Determine whether the sewing machine start pedal 202 is pressed forward; if yes, the operation flow enters step S1106; if no, the operation flow enters step S1108.

[0078] Step S1106 : driving the sewing machine servo motor 204 to drive the rotary hook 206 to rotate, and driving the first solenoid valve 104 to make the vortex tube 106 output the cold air 304 toward the rotary hook 206 .

[0079] Step S1108 : Stop driving the sewing machine servo motor 204 to stop driving the rotary hook 206 to rotate, and drive the second solenoid valve 112 to make the vortex tube 106 output less of the cold air 304 (ie, less than the cold air 304 output in step S1106 ) toward the rotary hook 206 .

[0080] Step S1110 : Stop driving the first solenoid valve 104 and the second solenoid valve 112 to stop the vortex tube 106 from outputting the cold air 304 toward the rotary shuttle 206 .

[0081] The invention has the effect of effectively reducing the temperature of the rotary hook of the sewing machine. The invention utilizes the vortex tube principle to quickly cool the rotary hook, ensure the normal operation of the rotary hook and extend the service life of the rotary hook. In addition, the addition of an electronic control program can achieve the purpose of energy saving and environmental protection.

[0082] The above description is only an embodiment of the present invention, and it cannot limit the scope of the implementation of the present invention. That is, all equivalent changes and modifications made according to the claims of the present invention should still fall within the scope of the patent coverage of the present invention. The present invention may also have other various embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should fall within the scope of protection of the claims attached to the present invention. In summary, the structure of the present invention has never been seen in similar products and public use, and has industrial applicability, novelty and progress.

Claims

1. A rotary hook electric control heat dissipation device is applied to a sewing device and a compressed air supply device, the sewing device comprises a sewing machine start pedal, a sewing machine servo motor and a rotary hook, characterized in that: The rotary hook electric control heat dissipation device comprises: a microprocessor; a first solenoid valve, the first solenoid valve being electrically connected to the microprocessor and connected to the compressed air supply device; and a vortex tube connected to the first solenoid valve, When the microprocessor detects that the sewing machine start pedal is pressed, the microprocessor drives the sewing machine servo motor to drive the rotary hook to rotate, and the microprocessor drives the first solenoid valve to allow the compressed air provided by the compressed air supply device to flow into the vortex tube through the first solenoid valve, and the vortex tube uses the compressed air to generate cold air and output the cold air toward the rotary hook.

2. The rotary hook electrically controlled heat dissipation device according to claim 1, characterized in that: Also includes: a cold air delivery pipe connected to the vortex tube, Wherein, the vortex tube comprises: a cold air outlet connected to the cold air delivery pipe, The vortex tube outputs the cold air toward the rotary shuttle through the cold air outlet and the cold air delivery pipe.

3. The rotary hook electrically controlled heat dissipation device according to claim 2, characterized in that: The vortex tube further comprises: a compressed air inlet connected to the first solenoid valve, The compressed air flowing into the vortex tube flows into the vortex tube through the compressed air inlet.

4. The rotary hook electrically controlled heat dissipation device according to claim 3, characterized in that: The vortex tube further comprises: A hot air outlet, When the vortex tube utilizes the compressed air to generate the cold air, the vortex tube simultaneously generates hot air and outputs the hot air through the hot air outlet.

5. The rotary hook electrically controlled heat dissipation device according to claim 4, characterized in that: The first solenoid valve comprises: A first air inlet is connected to the compressed air supply device so that the first solenoid valve receives the compressed air provided by the compressed air supply device through the first air inlet.

6. The rotary hook electrically controlled heat dissipation device according to claim 5, characterized in that: When the microprocessor detects that the sewing machine start pedal is not pressed, the microprocessor stops driving the sewing machine servo motor to stop driving the rotary hook to rotate, and the microprocessor stops driving the first solenoid valve to stop the compressed air provided by the compressed air supply device from flowing into the vortex tube through the first solenoid valve, and the vortex tube stops using the compressed air to generate the cold air and stops outputting the cold air toward the rotary hook.

7. The rotary hook electrically controlled heat dissipation device according to claim 4, characterized in that: Also includes: A throttle valve is connected to the first solenoid valve and the compressed air inlet of the vortex tube.

8. The rotary hook electrically controlled heat dissipation device according to claim 7, characterized in that: When the microprocessor detects that the sewing machine start pedal is not pressed, the microprocessor stops driving the sewing machine servo motor to stop driving the rotary hook to rotate, and the microprocessor stops driving the first solenoid valve to allow the compressed air provided by the compressed air supply device to flow into the vortex tube through the throttle valve; the throttle valve is used to reduce the flow rate of the compressed air passing through the throttle valve.

9. The rotary hook electrically controlled heat dissipation device according to claim 4, characterized in that: Also includes: a throttle valve connected to the compressed air inlet of the vortex tube; and a second solenoid valve, the second solenoid valve being electrically connected to the microprocessor, the second solenoid valve being connected to the compressed air supply device and the throttle valve, When the microprocessor detects that the sewing machine start pedal is pressed, the microprocessor stops driving the second solenoid valve.

10. The rotary hook electrically controlled heat dissipation device according to claim 9, characterized in that: When the microprocessor detects that the sewing machine start pedal is not pressed, the microprocessor stops driving the sewing machine servo motor to stop driving the rotary hook to rotate, and the microprocessor drives the second solenoid valve to allow the compressed air provided by the compressed air supply device to flow into the vortex tube through the throttle valve, and the microprocessor stops driving the first solenoid valve; the throttle valve is used to reduce the flow rate of the compressed air passing through the throttle valve.

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