A multi-temperature zone gradient hot air circulation high-speed coating machine

Abstract

The present invention discloses a multi-temperature zone gradient hot air circulation high-speed coating machine, which belongs to the field of hot air circulation coating machines, including a coating structure, wherein the coating structure includes a coating machine body and a transmission structure, and a cooling circulation component is provided on the transmission structure, and the cooling circulation component includes four support rods, and a top plate is fixedly installed on the top of the four support rods, and side panels are installed on the four sides of the rectangle surrounded by the four transmission structures, and at least one isolation plate is installed on the bottom of the top plate, and the isolation plate divides the internal space surrounded by the four side panels into several parts at equal intervals. By providing the cooling circulation component, gradual cooling can be achieved through the mechanical structure, so that the coating material is dried in sequence from low temperature to high temperature, avoiding the problem of warping of the dried material due to direct high-temperature drying of the device, and the appearance of hard shells and cracks on the surface. At the same time, by providing the cooling circulation component, the emission of hot air can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hot air circulation coating machines, in particular to a multi-temperature zone gradient hot air circulation high-speed coating machine. Background Art

[0002] In many areas of industrial production, coating process plays a key role, and the coating machine, as the core equipment for realizing the coating process, is of self-evident importance. The coating machine is mainly used to evenly coat a layer of substances with specific functions, such as adhesives, coatings, inks, photosensitive materials, etc., on the surface of various substrates such as paper, film, metal foil, and cloth, so as to give the substrate new properties and meet the diverse needs of different industries.

[0003] In the complete coating process, the drying process is the core step to ensure the quality and performance of coated products. With the vigorous development of industries such as papermaking, electronics, new energy, and packaging, the requirements for the quality, production efficiency, and environmental performance of coated products are constantly increasing, which makes the innovation of coating machine drying technology an urgent need for industry development.

[0004] However, coating drying mostly adopts natural drying or hot air drying. In the hot air drying environment, the efficiency of coating drying is significantly improved. Since coating drying requires multi-stage gradual heating to prevent the surface from drying too quickly to form a hard shell, thereby reducing defects such as coating cracks and pinholes, existing devices usually achieve gradual heating and drying by installing multiple hot air devices, which will cause large exhaust gas emissions and high technical energy consumption.

[0005] Therefore, it is necessary to provide a multi-temperature zone gradient hot air circulation high-speed coating machine to solve the above problems. Summary of the Invention

[0006] Based on the above-mentioned problems existing in the prior art, the problem to be solved by the present invention is: by providing a cooling circulation component, gradual cooling can be achieved through the mechanical structure, so that the coated material can be dried in sequence from low temperature to high temperature, avoiding the problem of direct high-temperature drying of the device causing the dried material to curl up, and the appearance of hard shells and cracks on the surface. At the same time, by providing a cooling circulation component, the emission of hot air can be reduced, and the problem of air pollution can be avoided. By providing a cooling circuit and an air cooling component, the water source that has replaced heat can be cooled, and the problem of the circulating water source having a temperature causing the heat replacement effect to deteriorate can be avoided. By providing a positioning component, the device can be helped to position the edge, avoiding the problem of stress concentration of the material during drying causing the edge to curl up, assisting in positioning the material, and helping to better transport the material.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a multi-temperature zone gradient hot air circulation high-speed coating machine, including a coating structure, the coating structure includes a coating machine body and a transmission structure, a cooling circulation component is provided on the transmission structure, the cooling circulation component includes four support rods, the tops of the four support rods are fixedly installed with a top plate, the four sides of the rectangle surrounded by the four transmission structures are all installed with side plates, the bottom of the top plate is installed with at least one isolation plate, the isolation plate divides the internal space surrounded by the four side plates into several parts at equal intervals, one side of the side plate is penetrated There is a first output pipe, the other end of the first output pipe is connected to a heater, the air inlet of the heater is connected to a return pipe, the other end of the return pipe passes through one side of the top of the top plate and extends into the top plate, the top of the top plate is connected to a second output pipe, the other end of the second output pipe is connected to an air guide assembly, the bottom of the air guide assembly is fixedly connected to a double-head driver, the bottom of the double-head driver is fixedly connected to a water guide assembly, the bottom of the water guide assembly is fixedly connected to a water tank assembly, and a cooling assembly is provided on one side of the air guide assembly.

[0008] Furthermore, a positioning assembly is provided on the top of the top plate, and the positioning assembly includes an air compressor, one end of the air compressor is connected to a diversion pipe, and at least two groups of diversion heads are provided on the diversion pipe. The four corners of the diversion head are connected to secondary diversion pipes, and the bottoms of the secondary diversion pipes are connected to positioning heads.

[0009] Furthermore, the air guide assembly includes an airflow casing, the second output duct passes through the top of the airflow casing and extends into the interior of the airflow casing, two fixing rings fixedly connected to the side panels are installed on the outside of the airflow casing, and airflow blades are installed inside the airflow casing. The upper output shaft of the double-headed driver passes through the airflow casing and is fixedly connected to the airflow blades, the bottom of one side of the airflow casing is fixedly connected to the second flow tube, the bottom of the second flow tube is fixedly connected to a connector, and the connector passes through the side panel set on one side.

[0010] Furthermore, the cooling assembly includes a cooling shell arranged on the outer wall of the second flow tube, one side of the cooling shell is connected to a cooling water pipe, the interior of the cooling shell is provided with a threaded groove, the water flow diversion assembly includes a pumping shell, the interior of the pumping shell is provided with a turbine, the lower output shaft of the double-headed driver passes through the double-headed driver and extends into the water tank assembly, the lower output shaft of the double-headed driver is fixedly connected to the turbine, a water inlet pipe is installed on one side of the top of the pumping shell, the water inlet pipe passes through the water tank assembly and extends into the interior of the water tank assembly, and a water outlet pipe is installed on the other side of the top of the water flow diversion assembly, and the other end of the water outlet pipe is connected to the interior of the cooling shell.

[0011] Furthermore, the water tank assembly includes a cooling water tank, a water inlet is provided on one side of the top of the cooling water tank, a cooling circuit is connected to the bottom of one side of the cooling water tank, and the other end of the cooling circuit is connected to the cooling water pipe.

[0012] Furthermore, one side of the cooling water tank is fixedly connected to an air cooling assembly, and the air cooling assembly includes two air cooling shells, and air cooling fans are provided inside the two air cooling shells. A first connecting rod and a second connecting rod are respectively installed on one side of the two air cooling fans, and a transmission belt for transmission is provided between the first connecting rod and the second connecting rod.

[0013] Furthermore, one end of the second connecting rod is connected to a gear, and the lower output shaft of the double-headed driver is provided with a thread on the part that passes through the interior of the cooling water tank, and the thread can engage with the gear, and the setting position of the air-cooling component corresponds to the setting position of the cooling circuit.

[0014] Furthermore, the positioning head includes a positioning shell connected to the secondary diversion pipe, a sealing plate is provided inside the positioning shell, a limiting rod fixedly connected to the positioning shell is provided on the top of the sealing plate, a downward extension rod is fixedly connected to the bottom of the sealing plate, a spring is fixedly connected to the bottom of the downward extension rod, a mounting plate is fixedly connected to the bottom of the mounting plate, a positioning wheel is fixedly connected to the outer wall of the positioning shell, and a fixed shell fixedly connected to the side plate is provided.

[0015] Furthermore, the bottom of the positioning wheel corresponds vertically to the position of the roller arranged on the top of the transmission structure.

[0016] Furthermore, the second output pipe is connected to one compartment divided by the isolation plate, and the connector is connected to the other compartment divided by the isolation plate.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a multi-temperature zone gradient hot air circulation high-speed coating machine, which is equipped with a cooling circulation component and can achieve gradual cooling through a mechanical structure, so that the coating material can be dried in sequence from low temperature to high temperature, avoiding the problem of warping of the dried material due to direct high-temperature drying of the device, and the appearance of hard crust and cracks on the surface. At the same time, by providing a cooling circulation component, the emission of hot air can be reduced, avoiding the problem of air pollution.

[0019] By providing a cooling circuit and an air cooling component, the water source that has replaced heat can be cooled down, avoiding the problem of poor heat replacement effect caused by the temperature of the circulating water source.

[0020] By providing a positioning component, the device can be helped to position the edge, avoiding the problem of edge warping caused by stress concentration when the material is drying, assisting in positioning the material, and helping the material to be better transported. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0022] Figure 1 This is an overall schematic diagram of a multi-temperature zone gradient hot air circulation high-speed coating machine in this application;

[0023] Figure 2 Schematic diagram of coating structure;

[0024] Figure 3 It is a schematic diagram of the cooling cycle component;

[0025] Figure 4 Schematic diagram of the internal structure of the cooling cycle component;

[0026] Figure 5 It is a cross-sectional schematic diagram of the cooling cycle component;

[0027] Figure 6 for Figure 5 A in the middle is an enlarged schematic diagram;

[0028] Figure 7 This is a schematic diagram of the air cooling component;

[0029] Figure 8 Schematic diagram of the cross section of the positioning head;

[0030] Among them, the reference numerals in the figures are:

[0031] 1. Coating structure; 101. Coating machine body; 102. Transmission structure; 2. Cooling cycle assembly; 201. Support rod; 202. Side plate; 203. Top plate; 204. Heater; 205. First output pipe; 206. Return pipe; 208. Second output pipe; 209. Air guide assembly; 210. Dual-head drive; 211. Water guide assembly; 212. Water tank assembly; 213. Cooling circuit; 214. Cooling assembly; 215. Air cooling assembly; 216. Isolation plate; 2091. Airflow housing; 2092. Airflow fan blades; 2093. Fixing ring; 2094. Second flow pipe; 2095. Connector; 2111. Pumping housing; 2112. Turbine; 2113 , water inlet pipe; 2114, water outlet pipe; 2121, cooling water tank; 2122, water inlet; 2141, cooling shell; 2142, cooling water pipe; 2143, threaded groove; 2151, air-cooled shell; 2152, air-cooled fan; 2153, first connecting rod; 2154, transmission belt; 2155, second connecting rod; 2156, gear; 3, positioning assembly; 301, air compressor; 303, diverter head; 304, diverter pipe; 305, secondary diverter pipe; 306, positioning head; 3061, positioning shell; 3062, limiting rod; 3063, sealing plate; 3064, spring; 3065, fixed shell; 3066, lower extension rod; 3067, mounting plate; 3068, positioning wheel. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0034] like Figures 1-8As shown, the present application provides a multi-temperature zone gradient hot air circulation high-speed coating machine, including a coating structure 1, the coating structure 1 includes a coating machine body 101 and a transmission structure 102, a cooling circulation component 2 is provided on the transmission structure 102, and the cooling circulation component 2 includes four support rods 201, and a top plate 203 is fixedly installed on the top of the four support rods 201. The four sides of the rectangle formed by the four transmission structures 102 are all installed with side plates 202, and at least one isolation plate 216 is installed at the bottom of the top plate 203. The isolation plate 216 divides the internal space surrounded by the four side plates 202 into several parts at equal intervals, and a first output pipe 205 is passed through one side of one side plate 202. The first output pipe 205 is connected to the first output pipe 205. The other end of the outlet pipe 205 is connected to the heater 204, the air inlet of the heater 204 is connected to the return pipe 206, the other end of the return pipe 206 passes through one side of the top of the top plate 203 and extends into the top plate 203, the top of the top plate 203 is connected to the second output pipe 208, the other end of the second output pipe 208 is connected to the air guide component 209, the bottom of the air guide component 209 is fixedly connected to the double-headed driver 210, the bottom of the double-headed driver 210 is fixedly connected to the water flow guide component 211, the bottom of the water flow guide component 211 is fixedly connected to the water tank component 212, and a cooling component 214 is provided on one side of the air guide component 209.

[0035] A positioning assembly 3 is also provided on the top of the top plate 203. The positioning assembly 3 includes an air compressor 301. One end of the air compressor 301 is connected to a diversion pipe 304. At least two groups of diversion heads 303 are provided on the diversion pipe 304. The four corners of the diversion head 303 are connected to secondary diversion pipes 305. The bottom of the secondary diversion pipe 305 is connected to a positioning head 306.

[0036] The air guide assembly 209 includes an airflow housing 2091, a second output duct 208 passes through the top of the airflow housing 2091 and extends into the interior of the airflow housing 2091, two fixing rings 2093 fixedly connected to the side panel 202 are installed on the outside of the airflow housing 2091, and airflow blades 2092 are installed inside the airflow housing 2091. The upper output shaft of the double-headed driver 210 passes through the airflow housing 2091 and is fixedly connected to the airflow blades 2092. The bottom of one side of the airflow housing 2091 is fixedly connected to the second flow tube 2094, and the bottom of the second flow tube 2094 is fixedly connected to the connector 2095, and the connector 2095 passes through the side panel 202 set on one side.

[0037] The air guide assembly 209 includes an airflow housing 2091, a second output duct 208 passes through the top of the airflow housing 2091 and extends into the interior of the airflow housing 2091, two fixing rings 2093 fixedly connected to the side panel 202 are installed on the outside of the airflow housing 2091, and airflow blades 2092 are installed inside the airflow housing 2091. The upper output shaft of the double-headed driver 210 passes through the airflow housing 2091 and is fixedly connected to the airflow blades 2092. The bottom of one side of the airflow housing 2091 is fixedly connected to the second flow tube 2094, and the bottom of the second flow tube 2094 is fixedly connected to the connector 2095, and the connector 2095 passes through the side panel 202 set on one side.

[0038] The water tank assembly 212 includes a cooling water tank 2121 , a water inlet 2122 is provided on one side of the top of the cooling water tank 2121 , a cooling circuit 213 is connected to the bottom of one side of the cooling water tank 2121 , and the other end of the cooling circuit 213 is connected to the cooling water pipe 2142 .

[0039] An air-cooling assembly 215 is fixedly connected to one side of the cooling water tank 2121. The air-cooling assembly 215 includes two air-cooling shells 2151. Air-cooling fans 2152 are provided inside the two air-cooling shells 2151. A first connecting rod 2153 and a second connecting rod 2155 are respectively installed on one side of the two air-cooling fans 2152. A transmission belt 2154 for transmission is provided between the first connecting rod 2153 and the second connecting rod 2155.

[0040] One end of the second connecting rod 2155 is connected to a gear 2156. The lower output shaft of the double-headed driver 210 that passes through the interior of the cooling water tank 2121 is provided with a thread that can engage with the gear 2156. The setting position of the air-cooling component 215 corresponds to the setting position of the cooling circuit 213.

[0041] The positioning head 306 includes a positioning shell 3061 connected to the secondary diversion pipe 305, a sealing plate 3063 is provided inside the positioning shell 3061, a limiting rod 3062 fixedly connected to the positioning shell 3061 is provided on the top of the sealing plate 3063, a downward extension rod 3066 is fixedly connected to the bottom of the sealing plate 3063, a spring 3064 is fixedly connected to the bottom of the limiting rod 3062, a mounting plate 3067 is fixedly connected to the bottom of the mounting plate 3067, a positioning wheel 3068 is fixedly connected to the bottom of the positioning shell 3061, and a fixed shell 3065 fixedly connected to the side plate 202 is provided on the outer wall of the positioning shell 3061.

[0042] The bottom of the positioning wheel 3068 corresponds vertically to the position of the roller arranged on the top of the transmission structure 102.

[0043] The second output pipe 208 is connected to one of the compartments divided by the isolation plate 216 , and the connector 2095 is connected to the other compartment divided by the isolation plate 216 .

[0044] The positioning head 306 may be disposed only within the high temperature chamber.

[0045] The transmission structure 102 is preferably in the form of a transmission belt, which can achieve more effective insulation operation and further reduce air leakage of the device.

[0046] Working principle:

[0047] Before using the device, first check the various components of the device to ensure that the various components of the device cooperate properly and ensure that the device can operate normally. After the inspection of the device is completed, energize the parts of the device that need to be energized, make the device idle first, and promote the circulation of heat inside the device.

[0048] When the double-head driver 210 is started, the double-head driver 210 drives the turbine 2112 to work, and the turbine 2112 discharges the water inside its cooling water tank 2121 into the cooling shell 2141 through the water outlet pipe 2114 through the water inlet pipe 2113. When the high-speed water flow enters the cooling shell 2141, the threaded groove 2143 provided inside the cooling shell 2141 changes the direction of the water flow into a rotating upward direction. When the water flow reaches the top, the water flow is discharged through the cooling water pipe 2142 and refluxes into the cooling water tank 2121 through the cooling circuit 213, thereby realizing the circulation of the cooling water flow.

[0049] When the heater 204 is started, the heater 204 begins to supply heat. The heater 204 draws the cold air in the other compartment into the heater 204 through the return pipe 206, and converts the cold air into hot air and discharges it into the compartment connected to the first output pipe 205 through the first output pipe 205. The interior of the compartment connected to the first output pipe 205 is filled with high-temperature air.

[0050] Start the double-headed driver 210. When the double-headed driver 210 is started, the double-headed driver 210 drives the wind fan blades 2092 to rotate at high speed. The wind fan blades 2092 rotate through the second output pipe 208 to transport the high-temperature gas in the cabin connected to the second output pipe 208 to the inside of the wind casing 2091 and discharge it to the inside of the other side cabin through the second flow pipe 2094 and the connector 2095. When the high-temperature air passes through the second flow pipe 2094, the water flow circulating inside the second flow pipe 2094 cools the high-temperature air flowing inside the second flow pipe 2094. The circulating water flow replaces part of the heat in the high-temperature air, thereby reducing its temperature.

[0051] When the double-headed driver 210 is working, the double-headed driver 210 drives the gear 2156 to work. When the gear 2156 is working, the gear 2156 drives the second connecting rod 2155 to rotate. The rotation of the second connecting rod 2155 drives one of the air-cooling fans 2152 to rotate. When the second connecting rod 2155 rotates, the first connecting rod 2153 is driven to rotate through the transmission belt 2154. The rotation of the first connecting rod 2153 drives the other air-cooling fan 2152 to rotate. When the two air-cooling fans 2152 rotate, air is blown into the cooling circuit 213 to cool down the water flow that has just replaced heat.

[0052] By arranging the cooling cycle component 2 to connect several compartments in series, the temperature thereof is gradually reduced. At the same time, the excess warm air produced by the lowest temperature compartment is transferred back to the heater 204 through the return pipe 206 to be reheated to continue the next cycle.

[0053] After the cycle adjustment of the device is completed, the coated material is guided through the coater body 101 and the transmission structure 102 so that the coated article passes through the device after being coated by the coater body 101 .

[0054] When the air compressor 301 is working, the air compressor 301 transports compressed gas to the positioning head 306 through the diverter head 303, the diverter pipe 304 and the secondary diverter pipe 305. After the high-pressure gas enters the interior of the positioning shell 3061, it pushes the sealing plate 3063 down. The movement of the sealing plate 3063 drives the downward extension rod 3066 to move. The movement of the downward extension rod 3066 drives the mounting plate 3067 and the positioning wheel 3068 to move. The sealing plate 3063 moves the compressed spring 3064. When the positioning wheel 3068 contacts the coating material, the edge of the coating material is locked.

[0055] By providing a cooling circulation component 2, gradual cooling can be achieved through the mechanical structure, so that the coated material can be dried in sequence from low temperature to high temperature, avoiding the problem of direct high-temperature drying of the device causing the dried material to curl up, and the appearance of hard shells and cracks on the surface. At the same time, by providing a cooling circulation component 2, the emission of hot air can be reduced, avoiding the problem of air pollution.

[0056] By providing the cooling circuit 213 and the air cooling component 215, the water source after heat replacement can be cooled down, thereby avoiding the problem of poor heat replacement effect caused by the temperature of the circulating water source.

[0057] By providing a positioning component 3, the device can be helped to position the edge, avoiding the problem of edge warping caused by stress concentration when the material is dried, assisting the material in positioning, and helping the material to be better transported.

[0058] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A multi-temperature zone gradient hot air circulation high-speed coating machine, comprising a coating structure (1), characterized in that: The coating structure (1) comprises a coating machine body (101) and a transmission structure (102), a cooling circulation assembly (2) is provided on the transmission structure (102), the cooling circulation assembly (2) comprises four support rods (201), a top plate (203) is fixedly installed on the top of the four support rods (201), side plates (202) are installed on all four sides of a rectangle surrounded by the four transmission structures (102), at least one isolation plate (216) is installed at the bottom of the top plate (203), and the isolation plate (216) divides the internal space surrounded by the four side plates (202) into a plurality of parts at equal intervals; A first output pipe (205) is passed through one side of one of the side plates (202), the other end of the first output pipe (205) is connected to a heater (204), an air inlet of the heater (204) is connected to a return pipe (206), and the other end of the return pipe (206) passes through one side of the top of the top plate (203) and extends into the top plate (203); A positioning assembly (3) is further provided on the top of the top plate (203), the positioning assembly (3) comprising an air compressor (301), one end of the air compressor (301) being connected to a diversion pipe (304), at least two groups of diversion heads (303) being provided on the diversion pipe (304), the four corners of the diversion head (303) being connected to secondary diversion pipes (305), and the bottoms of the secondary diversion pipes (305) being connected to positioning heads (306); The top of the top plate (203) is connected to a second output pipe (208), the other end of the second output pipe (208) is connected to an air guide assembly (209), the bottom of the air guide assembly (209) is fixedly connected to a double-headed driver (210), the bottom of the double-headed driver (210) is fixedly connected to a water flow guide assembly (211), the bottom of the water flow guide assembly (211) is fixedly connected to a water tank assembly (212), and a cooling assembly (214) is provided on one side of the air guide assembly (209).

2. The multi-temperature zone gradient hot air circulation high-speed coating machine according to claim 1, characterized in that: The air guide assembly (209) includes an airflow housing (2091), the second output duct (208) extends through the top of the airflow housing (2091) and into the interior of the airflow housing (2091), two fixing rings (2093) fixedly connected to the side panels (202) are installed on the outside of the airflow housing (2091), and airflow blades (2092) are installed inside the airflow housing (2091). The upper output shaft of the double-headed driver (210) passes through the airflow housing (2091) and is fixedly connected to the airflow blades (2092). The bottom of one side of the airflow housing (2091) is fixedly connected to a second flow tube (2094), and the bottom of the second flow tube (2094) is fixedly connected to a connector (2095), and the connector (2095) passes through the side panel (202) provided on one side.

3. The multi-temperature zone gradient hot air circulation high-speed coating machine according to claim 2, characterized in that: The cooling assembly (214) includes a cooling shell (2141) arranged on the outer wall of the second flow tube (2094), a cooling water pipe (2142) is connected to one side of the cooling shell (2141), a threaded groove (2143) is provided inside the cooling shell (2141), the water flow guide assembly (211) includes a pumping shell (2111), a turbine (2112) is provided inside the pumping shell (2111), and the lower output shaft of the double-headed driver (210) passes through the double-headed driver (210). ) and extends into the water tank assembly (212), the lower output shaft of the double-head driver (210) is fixedly connected to the turbine (2112), a water inlet pipe (2113) is installed on one side of the top of the pumping shell (2111), the water inlet pipe (2113) passes through the water tank assembly (212) and extends into the interior of the water tank assembly (212), a water outlet pipe (2114) is installed on the other side of the top of the water flow guide assembly (211), and the other end of the water outlet pipe (2114) is connected to the interior of the cooling shell (2141).

4. The multi-temperature zone gradient hot air circulation high-speed coating machine according to claim 3, characterized in that: The water tank assembly (212) comprises a cooling water tank (2121), a water inlet (2122) being provided on one side of the top of the cooling water tank (2121), a cooling circuit (213) being connected to the bottom of one side of the cooling water tank (2121), and the other end of the cooling circuit (213) being connected to a cooling water pipe (2142).

5. The multi-temperature zone gradient hot air circulation high-speed coating machine according to claim 4, characterized in that: An air-cooling assembly (215) is fixedly connected to one side of the cooling water tank (2121). The air-cooling assembly (215) comprises two air-cooling shells (2151). Air-cooling fans (2152) are provided inside the two air-cooling shells (2151). A first connecting rod (2153) and a second connecting rod (2155) are respectively installed on one side of the two air-cooling fans (2152). A transmission belt (2154) for transmission is provided between the first connecting rod (2153) and the second connecting rod (2155).

6. The multi-temperature zone gradient hot air circulation high-speed coating machine according to claim 5, characterized in that: One end of the second connecting rod (2155) is connected to a gear (2156), and a thread is provided on the portion of the lower output shaft of the double-headed driver (210) that passes through the interior of the cooling water tank (2121), and the thread can engage with the gear (2156). The setting position of the air-cooling component (215) corresponds to the setting position of the cooling circuit (213).

7. The multi-temperature zone gradient hot air circulation high-speed coating machine according to claim 1, characterized in that: The positioning head (306) comprises a positioning housing (3061) connected to the secondary shunt pipe (305); a sealing plate (3063) is provided inside the positioning housing (3061); a limiting rod (3062) fixedly connected to the positioning housing (3061) is provided on the top of the sealing plate (3063); a downward extending rod (3066) is fixedly connected to the bottom of the sealing plate (3063); a spring (3064) is fixedly connected to the bottom of the limiting rod (3062); a mounting plate (3067) is fixedly connected to the bottom of the downward extending rod (3066); a positioning wheel (3068) is fixedly connected to the bottom of the mounting plate (3067); and a fixing housing (3065) fixedly connected to the side plate (202) is provided on the outer wall of the positioning housing (3061).

8. The multi-temperature zone gradient hot air circulation high-speed coating machine according to claim 7, characterized in that: The bottom of the positioning wheel (3068) corresponds vertically to the position of the roller arranged on the top of the transmission structure (102).

9. The multi-temperature zone gradient hot air circulation high-speed coating machine according to claim 6, characterized in that: The second output pipe (208) is connected to one of the compartments divided by the isolation plate (216), and the connector (2095) is connected to the other compartment divided by the isolation plate (216).

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