Automatic paint spraying and drying device for coupler knuckle

Abstract

The utility model provides an automatic paint spraying and drying device for a coupler knuckle, which comprises a paint spraying room used for automatically spraying paint on the coupler knuckle; the drying room is used for drying the paint on the coupler knuckle; the circulating conveying track is horizontally erected at a preset height, and part of the circulating conveying track is arranged in the paint spraying room and the drying room in a penetrating mode; the suspension conveying mechanism is used for suspending the coupler knuckle and walking along the circulating conveying track; and the feeding and discharging positioning mechanism is used for positioning the suspension conveying mechanism and assisting feeding and discharging operation of the coupler knuckle. The device has the advantages that the hanging conveying mechanism operates on the circulating conveying track in a matched mode, and feeding and discharging operation, paint spraying operation and drying operation of the coupler knuckle can be automatically completed.

Description

Technical Field

[0001] The utility model relates to the technical field of railway equipment painting, in particular to an automatic paint spraying and drying device for a hook tongue. Background Art

[0002] The existing painting method of railway freight car hook buffer is relatively traditional, generally using manual painting method and dipping painting method, mainly using paint tanks to store alkyd varnish or water-soluble varnish, and manually dipping or manually painting or spraying the hook tongue, and the surface of the hook tongue is naturally dried after painting. Although this painting method can achieve the painting of the hook tongue surface, this operation method also has many disadvantages, including:

[0003] (1) The hook tongue is painted by dipping, which easily leads to residual paint in the hook tongue pin hole and casting process hole, affecting the three-state function of the coupler. In addition, the paint consumption is large, there is a lot of waste, and the cost of painting materials is high;

[0004] (2) The hook tongue is manually painted left and right, front and back, and up and down by manpower, which has high labor intensity and low work efficiency. In addition, the loading and unloading process is inconvenient, which can easily cause the hook tongue surface to be not painted properly and the painting quality to be poor;

[0005] (3) After the hook tongue is painted, it can only be dried naturally, which takes a long time to dry, the effect is not ideal, the working hours are long, and the painting production efficiency is low;

[0006] (4) Since the paint tank is exposed in the on-site working area, it is not conducive to environmental protection and fire safety, and it is easy to cause damage to the health of employees.

[0007] Therefore, it is necessary to study an automatic paint spraying and drying device for hook tongue to solve the above problems or alleviate the impact of the above problems. Utility Model Content

[0008] The utility model provides an automatic paint spraying and drying device for a hook tongue, which can automatically complete the loading and unloading operations, paint spraying operations and drying operations of the hook tongue through the coordinated operation of a hanging conveying mechanism on a circulating conveying track, so as to effectively solve the above problems or alleviate the effects of the above problems.

[0009] The automatic paint spraying and drying device for hook tongue of the utility model may include:

[0010] A spray paint room, wherein the spray paint room is used for automatically spraying paint on the hook tongue;

[0011] A drying room, wherein the drying room is used to dry the paint on the hook tongue;

[0012] A circulating conveying track, wherein the circulating conveying track is horizontally erected at a preset height and a portion of the circulating conveying track is passed through the spraying room and the drying room;

[0013] A hanging conveying mechanism, the hanging conveying mechanism is connected below the circulating conveying track and is used to hang the hook tongue and travel along the circulating conveying track; and

[0014] The loading and unloading positioning mechanism is arranged on the part of the circulating conveying track outside the paint shower room and the drying room, and is used to position the hanging conveying mechanism and assist the loading and unloading operation of the hook tongue.

[0015] In one embodiment, the circulating conveying track is laid in a concave structure, the drying room is arranged at the fork end of the concave structure, the paint shower room is arranged on one side of the concave structure, and the loading and unloading positioning mechanism is arranged at the end of the concave structure opposite to the fork.

[0016] In one embodiment, the drying room includes two hot air circulation drying areas and a curing drying tunnel located between the two hot air circulation drying areas, the two hot air circulation drying areas are symmetrically distributed on two branches of the circulating conveying track, and the curing drying tunnel is located in the recessed part of the circulating conveying track.

[0017] In one embodiment, the hot air circulation drying area is provided with a lower air supply duct, a circulation fan, an electric heating pipe and an upper return air duct which are connected in sequence. The circulation fan draws air from the lower part of the room through the lower air supply duct, and blows it back to the upper part of the room through the upper return air duct to form a circulation. The electric heating pipe is used to heat the air during the circulation process.

[0018] In one embodiment, the curing oven is provided with a curing furnace body along the outer side of the circulating conveying track, and the curing furnace body includes an integrally formed support frame and a furnace. A full-bridge curing channel is formed inside the furnace and a heating component is provided. The heating component is located inside the full-bridge curing channel.

[0019] In one embodiment, the spray paint room is an assembled structure, and the spray paint room is provided with a spray paint system, and the spray paint system includes a paint bucket, a diaphragm pump and a plurality of spray heads connected in sequence by pipes, and the spray heads can spray paint on the hook tongue from multiple directions.

[0020] In one embodiment, the paint shower room is provided with a paint receiving tray corresponding to the paint spraying station, and the bottom of the paint receiving tray is connected to the paint bucket.

[0021] In one embodiment, the hanging conveying mechanism includes a hook assembly, a lifting assembly and a traveling assembly, wherein the hook assembly is used to hang the hook tongue, the lifting assembly is used to lift the hook assembly, and the traveling assembly is used to run along the circulating conveying track.

[0022] In one embodiment, the loading and unloading positioning mechanism and the paint shower room are both provided with a trigger sensor and a photoelectric switch. The trigger sensor is used to identify that the hanging conveying mechanism has reached the corresponding working position, and the photoelectric switch determines whether the hook tongue is hung on the hanging conveying mechanism and starts the corresponding working mode.

[0023] In one embodiment, the device further includes an industrial computer, which is electrically connected to other components of the device to achieve automatic control operation of the device.

[0024] The automatic paint spraying and drying device for hook tongue provided by the utility model has at least the following beneficial effects compared with the prior art:

[0025] The automatic hook tongue paint spraying and drying device of the utility model cooperates with the operation on the circulating conveying track through the hanging conveying mechanism, and can sequentially carry out the hook tongue loading and unloading operation on the loading and unloading positioning mechanism, paint spraying operation in the paint spraying room, and drying operation in the drying room, so as to realize the automation of hook tongue paint spraying and drying. Such an operation process is safe, reliable and convenient, can improve the production efficiency and production quality of painting, and can solve the problems existing in the current manual painting, natural drying, environmental protection and fire safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0027] Figure 1 This is a structural top view of the automatic paint spraying and drying device for the hook tongue of the embodiment of the utility model;

[0028] Figure 2 This is a structural front view of the automatic paint spraying and drying device for the hook tongue of the embodiment of the utility model;

[0029] Figure 3 It is a structural side view of the automatic paint spraying and drying device for the hook tongue of the embodiment of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the convection circulation structure of the hot air circulation drying zone of the embodiment of the utility model.

[0031] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0032] Reference numerals:

[0033] 1-paint shower room, 11-paint shower system, 111-spray nozzle, 112-paint receiving tray, 12-automatic cleaning system, 2-drying room, 21-hot air circulation drying area, 211-lower air supply duct, 212-circulating fan, 213-electric heating pipe, 214-upper return air duct, 22-curing oven, 221-curing furnace body, 3-circulating conveying track, 4-suspension conveying mechanism, 41-hook assembly, 42-lifting assembly, 43-travel assembly, 5-loading and unloading positioning mechanism, 6-industrial computer, 7-hook tongue. DETAILED DESCRIPTION

[0034] The utility model will be further described below in conjunction with the accompanying drawings.

[0035] like Figures 1 to 3 As shown, the automatic paint spraying and drying device for hook tongue of the utility model may include:

[0036] A spraying room 1, which is used for automatically spraying paint on the hook tongue 7;

[0037] A drying room 2, which is used to dry the paint on the hook tongue 7;

[0038] A circulating conveying track 3, which is horizontally erected at a preset height and partially passes through the spraying room 1 and the drying room 2;

[0039] A hanging conveying mechanism 4, which is connected to the lower side of the circulating conveying track 3 and is used to hang the hook tongue 7 and move along the circulating conveying track 3; and

[0040] The loading and unloading positioning mechanism 5 is arranged on the part of the circulating conveying track 3 outside the spraying room 1 and the drying room 2, and is used to position the hanging conveying mechanism 4 and assist the hook tongue 7 in loading and unloading operations.

[0041] Specifically, the circulating conveying track 3 is a closed-loop transport guide rail, which can be erected by a fixed bracket and has a sufficient height from the ground, leaving enough space for the operation of the hanging conveying mechanism 4. The circulating conveying track 3 is partially arranged in the paint spraying room 1 and the drying room 2, that is, its transportation path passes through the paint spraying room 1 and the drying room 2, so that the hanging conveying mechanism 4 with the hook tongue 7 can be painted and dried in the paint spraying room 1 and the drying room 2 respectively; and the remaining part of the circulating conveying track 3 located outside the paint spraying room 1 and the drying room 2 is provided with a loading and unloading positioning mechanism 5, which can position the hanging conveying mechanism 4, so that the hanging conveying mechanism 4 can perform loading and unloading operations of the hook tongue 7 here.

[0042] In this way, the automatic paint spraying and drying device for the hook tongue cooperates with the operation on the circulating conveying track 3 through the hanging conveying mechanism 4, and can sequentially carry out the loading and unloading operation of the hook tongue 7 on the loading and unloading positioning mechanism 5, the paint spraying operation in the paint spraying room 1, and the drying operation in the drying room 2, so as to realize the automation of the paint spraying and drying of the hook tongue 7. Such an operation process is safe, reliable, and convenient, which can improve the production efficiency and production quality of painting, and can solve the problems existing in the current manual painting, natural drying, environmental protection, and fire safety.

[0043] In one example, the circulating conveying track 3 is laid in a concave structure, the drying room 2 is arranged at the fork end of the concave structure, the paint shower room 1 is arranged on one side of the concave structure, and the loading and unloading positioning mechanism 5 is arranged at the end of the concave structure opposite to the fork.

[0044] Furthermore, the drying room 2 includes two hot air circulation drying areas 21 and a curing drying tunnel 22 located between the two hot air circulation drying areas 21. The two hot air circulation drying areas 21 are symmetrically distributed on two branches of the circulating conveying track 3, and the curing drying tunnel 22 is located in the concave part of the circulating conveying track 3.

[0045] Specifically, the drying room 2 adopts a through-type drying method, the circulating conveying track 3 is laid in a concave structure, and the hanging conveying mechanism 4 carries the hook tongue 7 through a hot air circulation drying area 21, a curing drying tunnel 22, and another hot air circulation drying area 21 in the drying room 2 after being painted in the painting room 1, so that the hook tongue 7 has a sufficient transportation path for drying after being painted. The setting of the drying room 2 can speed up the drying of the hook tongue 7 after painting, and such a design can avoid laying the circulating conveying track 3 too long, making the structure of the automatic painting and drying device for the hook tongue more compact and reducing the land area.

[0046] In an example, Figure 4 As shown, the hot air circulation drying area 21 is provided with a lower air supply duct 211, a circulation fan 212, an electric heating tube 213 and an upper return air duct 214 which are connected in sequence. The circulation fan 212 draws air from the lower part of the room through the lower air supply duct 211, and blows it back to the upper part of the room through the upper return air duct 214 to form a circulation. The electric heating tube 213 is used to heat the air during the circulation process.

[0047] Specifically, the circulating fan 212 draws air from the lower part of the room through the lower air supply pipe 211, heats it through the electric heating pipe 213 to form hot air, and then blows it back to the upper part of the room through the upper return air pipe 214 to form a convection circulation structure. In this way, the hot air convection circulation is carried out in the form of upper return air and lower air supply, ensuring that the air temperature of the upper and lower parts of the room is consistent, ensuring the thermal balance of the room, making the drying speed of the upper and lower parts of the hook tongue 7 the same, and further ensuring the uniformity of the paint film. At the same time, the hot air circulation drying area 21 is connected to the curing oven 22, and the hot air of the convection circulation can ensure the thermal balance between the two. Of course, the hot air circulation drying area 21 can also be provided with corresponding air volume regulating valves, temperature measurement and temperature control components and other control and adjustment equipment to effectively control the hot air circulation drying area 21.

[0048] In one example, a curing oven 22 is provided with a curing furnace body 221 along the outer side of the circulating conveying track 3. The curing furnace body 221 includes an integrally formed support frame and a kiln. A full-bridge curing channel is formed inside the kiln and a heating component (not shown in the drawings) is provided. The heating component is located inside the full-bridge curing channel.

[0049] Specifically, the kiln is fixedly supported by a support frame, and a full-bridge curing channel is formed inside the kiln. The heating component is arranged inside the full-bridge curing channel and heats the air inside the channel. The circulating conveying track 3 is laid in the full-bridge curing channel so that the hook tongue 7 passing through can continue to dry. At the same time, the curing oven 22 is connected to the hot air circulation drying area 21, and a relatively stable thermal balance is formed under the convection circulation formed in the hot air circulation drying area 21, so that the hook tongue 7 is heated evenly during drying, which can ensure the uniformity of the paint film. Of course, the curing oven 22 can also be provided with a temperature control component outside the full-bridge curing channel to control the heating speed of the heating component. The curing oven 22 has a simple structure, and the curing furnace body 221 occupies a small area. At the same time, it can effectively reduce the heat loss of the drying room 2 and improve the curing effect.

[0050] It should be noted that the drying room 2 can adopt a solid-state relay PID control method for automatic temperature control, and the temperature can be set by an intelligent temperature controller so that the temperature setting range of the indoor hot air is 30°C to 40°C.

[0051] In one example, the paint spraying room 1 is an assembled structure, and the paint spraying room 1 is provided with a paint spraying system 11, which includes a paint bucket, a diaphragm pump (not shown in the drawings) and a plurality of spray heads 111 connected in sequence by pipes, and the spray heads 111 can spray paint on the hook tongue 7 from multiple directions.

[0052] Specifically, the paint spraying system 11 is powered by a diaphragm pump to extract paint from a paint bucket and supply it to multiple nozzles 111, and the multiple nozzles 111 spray paint on the hook tongue 7 from multiple directions. The paint spraying room 1 is an assembled structure and is a dry paint spraying room. There can be 8 nozzles 111 in the paint spraying room 1, which can spray paint on the hook tongue 7 from multiple directions (such as four directions) to ensure uniform paint coating. The paint spraying method of the paint spraying system 11 can adopt airless spraying, which can prevent the generation of paint mist to the greatest extent. The diaphragm pump can be a paint mist-free pneumatic diaphragm pump, and a pneumatic electromagnetic reversing valve can be used to control the start and stop. The nozzle 111 can be a shower-type nozzle.

[0053] During the specific operation, the hanging conveying mechanism 4 carries the hook tongue 7 on the circulating conveying track 3 and enters from one end of the paint spraying room 1. After running to the paint spraying station, the diaphragm pump is started by controlling the pneumatic electromagnetic reversing valve, and the hook tongue 7 is sprayed with paint in all directions through multiple nozzles 111. After the painting is completed, the hanging conveying mechanism 4 continues to run on the circulating conveying track 3 with the hook tongue 7 and moves out of the paint spraying room 1.

[0054] In one example, a paint receiving tray 112 is provided in the paint shower room 1 corresponding to the paint spraying station, and the bottom of the paint receiving tray 112 is connected to the paint bucket.

[0055] Specifically, the spray paint room 1 is provided with a paint receiving tray 112 below the spray paint station, and the paint receiving tray 112 is connected to the paint bucket. The paint receiving tray 112 receives the excess paint dropped by the spray paint and recycles it into the paint bucket for reuse, so as to reduce the consumption of paint. The paint receiving tray 112 is a funnel-shaped structure.

[0056] Furthermore, an automatic cleaning system 12 matching the paint spraying system 11 is provided in the paint spraying room 1 , and the automatic cleaning system 12 can clean the paint spraying system 11 .

[0057] Specifically, the automatic cleaning system 12 can adopt electric control automatic cleaning, which can be realized by the cooperation of equipment such as a clean water tank, a waste water tank, a water spray component, an air cleaning component, a water return component, an electric reversing valve, and a solenoid valve. The automatic cleaning system 12 can use tap water as a cleaning medium to automatically clean the spray paint system 11. The residual liquid after cleaning is directly recovered to the waste water tank. After water cleaning, the wind cleaning component works to blow away the residual water and paint in the pipes and nozzles, which can solve the problem of paint solidification and blockage in the spray paint system 11 caused by inconvenient manual cleaning, and can reduce the labor intensity of workers.

[0058] In one example, the hanging conveying mechanism 4 includes a hook assembly 41, a lifting assembly 42 and a walking assembly 43, wherein the hook assembly 41 is used to hang the hook tongue 7, the lifting assembly 42 is used to lift the hook assembly 41, and the walking assembly 43 is used to run along the circulating conveying track 3.

[0059] Specifically, the hook assembly 41 is connected to the travel assembly 43 through the lifting assembly 42. The hook body of the hook assembly 41 has a return bend, which can suspend the hook tongue 7 and ensure that it will not be unhooked during the operation of the following travel assembly 43. The lifting assembly 42 can also be a cylinder-driven lifting rod, which is used to adjust the hanging height of the hook tongue 7 during the painting operation of the hook tongue 7. The travel assembly 43 can be driven by a reducer, the travel speed can be 5m / min, and the motor can be a brake motor, which can run smoothly along the circulating conveying track 3 and ensure that the hook tongue 7 stops accurately at the loading and unloading and painting positions.

[0060] In one example, the loading and unloading positioning mechanism 5 can limit the position of the suspension conveying mechanism 4 by the cooperation of the feed cylinder and the clamping cylinder, that is, when the suspension conveying mechanism 4 runs to the loading and unloading station, the loading and unloading positioning mechanism 5 can clamp the front and rear ends of the suspension conveying mechanism 4 to achieve positioning.

[0061] Furthermore, a loading and unloading robot is arranged at the loading and unloading positioning mechanism 5 , and the loading and unloading robot can hang or remove the hook tongue 7 from the hook assembly 41 to realize loading and unloading operations of the hook tongue 7 .

[0062] In one example, the loading and unloading positioning mechanism 5 and the paint shower room 1 are both provided with a trigger sensor and a photoelectric switch (not shown in the drawings). The trigger sensor is used to identify that the hanging conveying mechanism 4 has reached the corresponding working position, and the photoelectric switch determines whether a hook tongue 7 is hung on the hanging conveying mechanism 4 and starts the corresponding working mode.

[0063] Specifically, the trigger sensor can recognize that the hanging conveying mechanism 4 reaches the predetermined working position of the loading and unloading positioning mechanism 5 or the paint shower room 1, so that the hanging conveying mechanism 4 can stop running according to the arrival signal emitted by the trigger sensor; the photoelectric switch determines whether there is a hook tongue 7 hanging on the hanging conveying mechanism 4. If there is a hook tongue 7 on the loading and unloading positioning mechanism 5, the working mode of first unloading and then loading is started; if there is no hook tongue 7, the working mode of direct loading is started; and if there is a hook tongue 7 in the paint shower room 1, the working mode of painting is started; if there is no hook tongue 7, the working mode of painting is not started.

[0064] In one example, the automatic coating and drying device for the hook tongue further includes an industrial computer 6, which is electrically connected to other components of the device to realize automatic control operation of the device. The industrial computer 6 is electrically connected to the suspension conveying mechanism 4, the loading and unloading positioning mechanism 5, the coating room 1 and the drying room 2, and the operation of each component is controlled by linkage to realize the automatic operation of coating and drying of the hook tongue 7.

[0065] In order to better understand the present invention, the automated operation process of the hook tongue automatic paint spraying and drying device will be further described below in conjunction with the accompanying drawings.

[0066] The hanging conveying mechanism 4 moves automatically on the circulating conveying track 3. When the trigger sensor of the loading and unloading positioning mechanism 5 recognizes that the hanging conveying mechanism 4 has run into place, it feeds back to the industrial computer 6. The industrial computer 6 controls the hanging conveying mechanism 4 to stop running. At the same time, the industrial computer 6 controls the loading and unloading positioning mechanism 5 to position the hanging conveying mechanism 4.

[0067] Then the loading and unloading positioning mechanism 5 identifies whether a hook tongue 7 is hung on the hanging conveying mechanism 4 through a photoelectric switch, and when a hook tongue 7 is present, controls the loading and unloading robot to start a working mode of first unloading and then loading the hanging conveying mechanism 4; and when no hook tongue 7 is present, controls the loading and unloading robot to start a working mode of directly loading the hanging conveying mechanism 4.

[0068] After completing loading, the hanging conveying mechanism 4 continues to move on the circulating conveying track 3 and enters the paint spraying room 1. When the trigger sensor of the paint spraying room 1 recognizes that the hanging conveying mechanism 4 has run into place, it feeds back to the industrial computer 6. The industrial computer 6 controls the hanging conveying mechanism 4 to stop running. Then the paint spraying room 1 recognizes whether there is a hook tongue 7 hanging on the hanging conveying mechanism 4 through the photoelectric switch. When there is a hook tongue 7, the paint spraying system 11 of the paint spraying room 1 is controlled to start the paint spraying working mode. When there is no hook tongue 7, the hanging conveying mechanism 4 is controlled to continue the working mode.

[0069] After the painting is completed, the hanging conveying mechanism 4 continues to move on the circulating conveying track 3 with the hook tongue 7 and enters the drying room 2. The hanging conveying mechanism 4 accelerates the drying of the hook tongue 7 after painting in the hot air environment in the drying room 2. The hanging conveying mechanism 4 moves on the circulating conveying track 3 with the hook tongue 7, passing through the first hot air circulation drying area 21, the curing drying tunnel 22, and the second hot air circulation drying area 21 in turn, until the hook tongue 7 is dried when it is moved out of the drying room 2.

[0070] Finally, the hanging conveying mechanism 4 carries the dried hook tongue 7 on the circulating conveying track 3 to the loading and unloading positioning mechanism 5, and performs the automated process of loading and unloading, spraying paint, and drying of the next hook tongue 7 again, and the process is repeated in this way. It should be noted that before the machine is shut down after all the painting and drying operations of the hook tongue 7 are completed, the spraying paint room 1 of the automatic spraying paint drying device for the hook tongue needs to clean the spraying paint system 11 through the automatic cleaning system 12.

[0071] In summary, the beneficial effects of the automatic paint spraying and drying device for hook tongue of the utility model include but are not limited to the following:

[0072] (1) The automatic paint spraying and drying device for the hook tongue of the utility model is equipped with corresponding induction switches in the loading and unloading positioning mechanism and the paint spraying room to ensure that the hook tongue can automatically identify that it has reached each working position.

[0073] (2) The automatic paint spraying and drying device for the hook tongue of the utility model can be connected with the flaw detection line of the hook tongue, and can realize the automatic flow operation of the hook tongue between the flaw detection, paint spraying and drying processes, and can be connected with the functions of automatic unloading and placement in the subsequent process; and this device can form an interlocking with the flaw detection line to prevent the hook tongue from falling off from the working position due to malfunction.

[0074] (3) The automatic paint spraying and drying device for the hook tongue of the utility model can be automatically controlled according to the paint spraying program through the cooperation of an industrial computer with multiple trigger sensors, photoelectric switches and other automatic control devices. The paint spraying system automatically completes the paint spraying operation and controls the paint spraying time, thereby improving the quality of paint spraying and ensuring that the paint spraying operation time for each hook tongue is only 6 seconds.

[0075] (4) The automatic paint spraying and drying device for the hook tongue of the utility model can realize automatic paint spraying and drying operations, which can reduce labor intensity, shorten operation time, speed up production progress, improve production efficiency, and reduce the loss of paint.

[0076] (5) The automatic paint spraying and drying device for the hook tongue of the utility model is designed with relatively closed paint spraying room and drying room, which is beneficial to environmental protection and fire safety; it adopts automatic airless spraying method, which does not require employees to participate in the operation, which is beneficial to protecting the health of employees.

[0077] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hook tongue automatic paint spraying and drying device, characterized in that: The device comprises: A spray paint room, wherein the spray paint room is used for automatically spraying paint on the hook tongue; A drying room, wherein the drying room is used to dry the paint on the hook tongue; A circulating conveying track, wherein the circulating conveying track is horizontally erected at a preset height and a portion of the circulating conveying track is passed through the spraying room and the drying room; A hanging conveying mechanism, the hanging conveying mechanism is connected below the circulating conveying track and is used to hang the hook tongue and travel along the circulating conveying track; and The loading and unloading positioning mechanism is arranged on the part of the circulating conveying track outside the paint shower room and the drying room, and is used to position the hanging conveying mechanism and assist the loading and unloading operation of the hook tongue.

2. The automatic paint spraying and drying device for hook tongue according to claim 1 is characterized in that: The circulating conveying track is laid in a concave structure, the drying room is arranged at the fork end of the concave structure, the paint spraying room is arranged on one side of the concave structure, and the loading and unloading positioning mechanism is arranged at the end of the concave structure opposite to the fork.

3. The automatic paint spraying and drying device for hook tongue according to claim 2 is characterized in that: The drying room includes two hot air circulation drying areas and a curing drying tunnel located between the two hot air circulation drying areas. The two hot air circulation drying areas are symmetrically distributed on two branches of the circulating conveying track. The curing drying tunnel is located in the concave part of the circulating conveying track.

4. The automatic paint spraying and drying device for hook tongue according to claim 3 is characterized in that: The hot air circulation drying area is provided with a lower air supply duct, a circulation fan, an electric heating pipe and an upper return air duct connected in sequence. The circulation fan draws air from the lower part of the room through the lower air supply duct, and blows it back to the upper part of the room through the upper return air duct to form a circulation. The electric heating pipe is used to heat the air during the circulation process.

5. The automatic paint spraying and drying device for hook tongue according to claim 3 is characterized in that: The curing oven is provided with a curing furnace body along the outer side of the circulating conveying track. The curing furnace body includes an integrally formed support frame and a furnace. A full-bridge curing channel is formed inside the furnace and a heating component is provided. The heating component is located inside the full-bridge curing channel.

6. The automatic paint spraying and drying device for hook tongue according to any one of claims 1 to 5, characterized in that: The paint spraying room is of assembled structure, and is provided with a paint spraying system. The paint spraying system comprises a paint bucket, a diaphragm pump and a plurality of spray heads which are sequentially connected by pipelines, and the spray heads can spray paint on the hook tongue from multiple directions.

7. The automatic paint spraying and drying device for hook tongue according to claim 6 is characterized in that: The paint shower room is provided with a paint receiving tray corresponding to the paint spraying station, and the bottom of the paint receiving tray is connected to the paint bucket.

8. The automatic paint spraying and drying device for hook tongue according to any one of claims 1 to 5, characterized in that: The hanging conveying mechanism comprises a hook assembly, a lifting assembly and a traveling assembly, wherein the hook assembly is used to hang the hook tongue, the lifting assembly is used to lift the hook assembly, and the traveling assembly is used to run along the circulating conveying track.

9. The automatic paint spraying and drying device for hook tongue according to any one of claims 1 to 5, characterized in that: The loading and unloading positioning mechanism and the paint shower room are both provided with a trigger sensor and a photoelectric switch. The trigger sensor is used to identify that the hanging conveying mechanism has reached the corresponding working position, and the photoelectric switch determines whether the hook tongue is hung on the hanging conveying mechanism and starts the corresponding working mode.

10. The automatic paint spraying and drying device for hook tongue according to any one of claims 1 to 5, characterized in that: The device also includes an industrial computer, which is electrically connected to other components of the device to achieve automatic control operation of the device.

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