Drying device and method based on modular freely-combinable bed frame surface paint spraying

Abstract

The invention discloses a drying device and method based on modular freely-combinable bed frame surface paint spraying, and relates to the technical field of drying. The drying device comprises a rack and a bed frame, and further comprises a conveying unit, a preheating unit, a cooling unit and a drying module which are installed on the rack; the conveying unit is used for conveying the bed frame into the drying module to be dried, a vibration unit matched with the bed frame is installed in the conveying unit, the bed frame is preheated through the preheating unit before entering the drying module, and the temperature of the bed frame is increased. The bed frame drying device has the advantages that when bed frame water paint is dried, high-temperature gas is sprayed to the surface of a bed frame in a targeted air injection drying mode, energy loss in the drying process is reduced, meanwhile, the vibrator is arranged to vibrate the bed frame, emission of moisture in the water paint on the surface of the bed frame is accelerated, in addition, intermittent air blowing and suction design is adopted, and the drying efficiency is improved. The contact time of the hot air and the bed frame is prolonged, pulses are generated, and evaporation of water in the water paint can be effectively promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of drying, in particular to a drying device and method based on modular freely combinable bed frame surface spraying. Background Art

[0002] A modular bed frame is a bed frame system designed with standardized components that can be flexibly assembled and adjusted. It is widely used in home, medical, hotel, dormitory and other scenarios. Its core features are customizability, easy installation, and scalability to meet different space and functional requirements. In order to extend the service life of the produced bed frame, a layer of protective water-based paint needs to be applied to the surface of the bed frame. After coating, the water-based paint needs to be dried using drying equipment, which is suitable for assembly line production.

[0003] Currently, commonly used drying equipment adopts vertical and horizontal ventilation drying, among which vertical ventilation drying will form hot air natural convection assistance in the drying chamber, reducing the energy consumption of the fan. However, in the existing vertical blowing drying equipment, there is more moisture in the water-based paint on the bed frame, resulting in a slow drying speed, and a large amount of water vapor evaporates after drying, resulting in a short drying time inside the equipment. Therefore, publication number CN110986498B discloses a motor assembly line drying equipment, which includes a drying equipment, a ventilation pipe, an electric controller, a support leg, and a conveying device. A ventilation pipe is provided on the top of the drying equipment, and the drying equipment and the ventilation pipe are movably connected. A support leg is provided under the bottom of the drying equipment, and the drying equipment and the support leg are fixedly connected. An electric controller is provided on the surface of the drying equipment, and the drying equipment and the electric controller are connected. A conveying device is installed inside the drying equipment.

[0004] The above-mentioned assembly line drying equipment uses a water absorption mechanism to first absorb the moisture on the surface of the motor parts, thereby reducing the drying time of the motor parts, reducing the evaporation of water vapor, and increasing the drying time inside the drying equipment. The drying equipment uses a disinfection lamp to preheat and disinfect the motor parts in advance, thereby improving the environmental protection of the motor parts. The fan is then used to conduct heat drying on the drying mechanism to form an internal circulation airflow, thereby reducing the loss of heat energy and benefiting energy conservation.

[0005] At that time, the above-mentioned drying equipment and the existing drying equipment were unable to quickly evaporate the moisture inside the water-based paint during actual use, which would cause the surface of the water-based paint to dry, while the internal moisture would be discharged in time, causing bubbles and holes to form inside the water-based paint, affecting the appearance. At the same time, the drying was carried out by continuously blowing air from above and exhausting air from below, and the wind direction was vertical. The water-based paint on the side of the bed frame could not be dried quickly, affecting the uniformity of drying. In addition, the vertical blowing could not be targeted, and most of the hot air passed through the gaps in the bed frame, resulting in reduced hot air drying efficiency.

[0006] Therefore, a novel drying device and method for spraying paint on the surface of a modular and freely combinable bed frame can be adopted to solve the shortcomings of the prior art. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems of uneven drying and easy occurrence of bubbles in the prior art, and to propose a drying device and method based on modular and freely combinable bed frame surface spraying.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A drying device for spraying paint on a modular and freely combinable bed frame surface, comprising a frame and a bed frame, and further comprising a conveying unit, a preheating unit, a cooling unit and a drying module installed on the frame;

[0010] The conveyor unit is equipped with a vibration unit that matches the bed frame. The bed frame is preheated by the preheating unit before entering the drying module to increase the temperature of the bed frame. After being dried in the drying module, the bed frame is cooled by the cooling unit and then moved out from the other end of the conveyor unit.

[0011] The drying module consists of an air intake unit and an exhaust unit. The air intake unit draws in outside air, heats it, and blows it toward the bed frame. The blowing shape is selected according to the shape of the bed frame, and it can also blow air around the bed frame to make the bed frame heated more evenly. The exhaust unit absorbs the hot air discharged by the air intake unit. The air intake unit and the exhaust unit operate alternately to extend the contact time between the hot air and the bed frame.

[0012] Preferably, the conveyor unit includes a frame, a plurality of rollers are rotatably mounted on the frame, a gear is fixedly mounted on each of the rollers, a motor is fixedly mounted on the frame, and the motor and the plurality of gears are driven by a chain.

[0013] Preferably, the vibration unit includes an electric push rod fixedly mounted on the bottom of the frame, a support plate fixedly mounted on the telescopic end of the electric push rod, a vibrator fixedly mounted on the support plate, a bracket fixedly mounted on the vibrating end of the vibrator, a plurality of support rollers that cooperate with the bed frame are rotatably mounted on the bracket, the spacing between two adjacent support rollers is equal to the spacing between two adjacent roller shafts, and the support rollers and the roller shafts are alternately staggered.

[0014] Preferably, the air intake unit includes a cover fixedly mounted on the top of the frame, a blower box fixedly mounted on the cover, an air outlet mechanism mounted in the blower box, a first pump fixedly mounted on the frame, an air inlet pipe and a first air suction pipe fixedly connected to the first pump, and the blower box is connected to the air inlet pipe;

[0015] A plurality of heating rods are fixedly installed inside the blast box, and the blast box is divided into a first chamber and a fourth chamber by two first baffles. The air outlet mechanism is located in the fourth chamber, and the heating rods are located in the first chamber. A first motor is fixedly installed on the side of the blast box, and a first rotating rod is fixedly installed on the driving end of the first motor. A plurality of first blocking plates that cooperate with the two first baffles are fixedly installed on the first rotating rod. A wind shield assembly is installed on the blast box;

[0016] The windshield assembly includes a plurality of windshields slidably mounted on the side of the blower box. A plurality of telescopic cylinders matching the corresponding windshields are fixedly mounted on the blower box to control the telescopic movement of the windshields.

[0017] Preferably, the air outlet mechanism includes a plurality of air nozzles fixedly mounted on the bottom of the blower box, each of the air nozzles is fixedly mounted with an electric control valve, wherein the electric control valves are mounted on the upper part of the air nozzles located on the periphery, and the length of the air nozzles located on the periphery is greater than the length of the air nozzles located on the inner side.

[0018] Preferably, the exhaust unit includes an air suction box fixedly mounted on the bottom of the frame, and a second pump is fixedly mounted on the frame, the second pump is connected to the air suction box through a second air suction pipe, the air suction box is fixedly mounted with a second baffle and a third baffle, a sealing water absorption mechanism that cooperates with the second baffle and the third baffle is installed in the air suction box, the air suction box is divided into a second chamber and a third chamber by the second baffle and the third baffle, and the sealing water absorption mechanism is located in the third chamber.

[0019] Preferably, the blocking and water absorption mechanism includes a second motor fixedly mounted on the side of the air suction box, the second motor driving end is fixedly mounted with a shaft, a plurality of second blocking plates matching the second baffle and the third baffle are fixedly mounted on the shaft, and each of the second blocking plates is fixedly mounted with a water absorption plate.

[0020] Preferably, two air ducts are fixedly connected in the first chamber, the second baffle is hollow in design, the two air ducts are connected to the inside of the second baffle, and a plurality of air outlet holes that cooperate with the second sealing plate are opened on the side of the second baffle close to the second sealing plate.

[0021] Preferably, the first pump and the second pump are connected to each other through a circulation pipe, the second pump is fixedly connected to an exhaust pipe, and both the circulation pipe and the exhaust pipe are installed with electronic control valves that operate alternately.

[0022] The present invention also provides a method for drying paint on the surface of a modular and freely combinable bed frame, comprising the above-mentioned drying device for spraying paint on the surface of a modular and freely combinable bed frame, and further comprising the following steps:

[0023] S1. Place the bed frame on the conveyor unit, and then transport the bed frame to the preheating unit through the conveyor unit. After preheating by the preheating unit, the temperature of the bed frame and the water-based paint on the bed frame rises to 90 degrees;

[0024] S2. The bed frame is then transported to the drying module. The air intake unit in the drying module blows air from the top of the bed frame and automatically changes the air outlet position according to the position and shape of the bed frame, so that the air outlet position is always aligned with the bed frame, blowing and drying the bed frame, and blowing and drying the surrounding areas of the bed frame;

[0025] S3. During the drying process, the air intake unit adopts intermittent blowing and is combined with the exhaust unit for intermittent suction, so that the contact time between the hot air and the bed frame is longer and the contact is more complete. In addition, the exhaust unit can discharge the moisture carried by the hot air, and then recycle the discharged hot air to reduce energy loss.

[0026] Compared with the existing technology, the advantages of the present invention are:

[0027] 1. When drying the water-based paint on the surface of the bed frame, this drying device sets a vibration unit to perform overfrequency vibration on the bed frame, which can promote the convection of water in the water-based paint. Under the action of vibration, the movement of water molecules inside the paint liquid is intensified, and the water originally close to the surface of the paint liquid is more likely to diffuse into the surrounding environment. At the same time, the internal water can also be replenished to the surface more quickly, which accelerates the evaporation rate of water.

[0028] 2. When drying the water-based paint on the bed frame surface, this drying device controls the operation of the air nozzle by setting an electric control valve, and automatically controls the air jet according to the shape and position of the bed frame, which can effectively avoid the hot air from being sprayed into the gap of the bed frame and causing the heat energy loss. It can not only effectively reduce the energy loss, but also can carry out targeted air jet drying and improve the drying efficiency.

[0029] 3. When drying the water-based paint on the bed frame surface, this drying device sets an intermittently operated air intake unit and exhaust unit to make the hot air on the bed frame flow in pulses. This not only prolongs the contact time between the hot air and the bed frame and achieves a greater utilization rate of thermal energy, but also makes the water-based paint on the bed frame surface vibrate, accelerating the evaporation of water in the water-based paint, thereby improving the drying efficiency.

[0030] 4. When drying the water-based paint on the surface of the bed frame, this drying device preheats the bed frame by setting a preheating component, narrowing the drying temperature difference and reducing the probability of bubble generation. At the same time, the wind shield is used to change the direction of the hot air so that the hot air blows to the edge of the bed frame. This not only makes the bed frame heated more evenly, but also allows the unsealed hot air to pass through the middle of the bed frame, heating the inside and outside of the bed frame, thereby accelerating the dissipation of moisture in the water-based paint on the bed frame.

[0031] To sum up, when drying the water-based paint on the bed frame, the present invention adopts a targeted jet drying method to spray high-temperature gas onto the surface of the bed frame, thereby reducing energy loss during the drying process. At the same time, a vibrator is provided to vibrate the bed frame to accelerate the dissipation of moisture in the water-based paint on the surface of the bed frame. In addition, an intermittent blowing and suction design is adopted to extend the contact time between the hot air and the bed frame and generate pulses, which can effectively promote the evaporation of moisture in the water-based paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0033] Figure 1 This is a schematic structural diagram of a modular and freely combinable bed frame surface spraying drying device proposed by the present invention;

[0034] Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle;

[0035] Figure 3 for Figure 1 Detailed structural diagram after removing the frame;

[0036] Figure 4 for Figure 3 Detailed schematic diagram of the structure after removing the intake unit and exhaust unit;

[0037] Figure 5 for Figure 4 Enlarged structural schematic details of the middle bed frame and vibration frame unit;

[0038] Figure 6 for Figure 1 Detailed diagram of the enlarged structure of the central intake unit and the exhaust unit after being rotated to a certain angle;

[0039] Figure 7 for Figure 6 Enlarged structural schematic detail diagram of the medium air inlet unit;

[0040] Figure 8 for Figure 7 Detailed schematic diagram of the structure after removing the cover and rotating it to a certain angle;

[0041] Figure 9 for Figure 8 Detailed schematic diagram of the structure after removing the windshield and rotating it to a certain angle;

[0042] Figure 10 for Figure 9 An enlarged schematic diagram of the structure of the middle blower box and other internal components;

[0043] Figure 11 for Figure 10Detailed schematic diagram of the structure after rotation at a certain angle;

[0044] Figure 12 for Figure 6 Enlarged structural schematic detail diagram of the middle exhaust fan unit;

[0045] Figure 13 for Figure 12 Detailed schematic diagram of the structure after removing the second pump, exhaust pipe and outer cover;

[0046] Figure 14 for Figure 13 Detailed diagram of the enlarged structure of the second baffle and the air duct.

[0047] In the figure: 1 frame, 2 conveyor unit, 3 preheating unit, 4 cooling unit, 5 air intake unit, 6 bed frame, 7 vibration unit, 8 electric push rod, 9 support plate, 10 vibrator, 11 support roller, 12 first pump, 13 second pump, 14 air inlet pipe, 15 circulation pipe, 16 first suction pipe, 17 exhaust pipe, 18 suction box, 19 wind shield assembly, 20 blower box, 21 wind shield, 22 air nozzle, 23 first motor, 24 first baffle, 25 first blocking plate, 26 heating rod, 27 first chamber, 28 electric control valve, 29 second suction pipe, 30 second baffle, 31 second blocking plate, 32 second chamber, 33 third chamber, 34 third baffle, 35 exhaust unit, 36 induced draft pipe. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] Example 1: Reference Figure 1-Figure 3 A drying device for spraying paint on the surface of a modular freely combinable bed frame includes a frame 1 and a bed frame 6, and also includes a conveying unit 2, a preheating unit 3, a cooling unit 4 and a drying module installed on the frame 1.

[0050] The preheating unit 3 is an existing device, which preheats the bed frame 6 passing through it through electric heating, so that the bed frame 6 enters the drying module at a high temperature. Preheating can increase the initial temperature of the bed frame 6 and reduce the temperature difference with the drying temperature. According to the principle of heat transfer, the greater the temperature difference, the faster the heat transfer speed. Therefore, after preheating, the speed at which heat is transferred to the water-based paint on the surface of the bed frame 6 during the drying process is faster, and the water evaporation rate is also accelerated, thereby shortening the drying time and improving the drying efficiency.

[0051] Preheating can make the water-based paint on the surface of the bed frame 6 heated more evenly during the drying process. If it is not preheated, the temperature difference between the surface and the inside of the water-based paint on the surface of the bed frame 6 is large, and it is easy for the surface to overheat while the inside is not dry during drying, resulting in poor drying quality. Through preheating, the overall temperature of the water-based paint on the surface of the bed frame 6 is more uniform. In the subsequent drying process, heat can be more evenly transferred to various parts of the water-based paint on the surface of the bed frame 6, reducing the cracking problem caused by uneven temperature and improving the drying quality.

[0052] The cooling unit 4 is an existing device, and its main function is to reduce the temperature of the bed frame 6 after drying, reduce the fluidity of the water-based paint, and make the water-based paint adhere more firmly to the bed frame 6. At the same time, rapid cooling can prevent moisture in the air from entering the water-based paint again.

[0053] Example 2: This example differs from the example 1 in that: Figure 1-Figure 5 , the conveyor unit 2 is used to transport the bed frame 6 to the drying module for drying;

[0054] The conveyor unit 2 includes a frame, on which a plurality of rollers are rotatably mounted, each roller having a gear fixedly mounted thereon, and a motor fixedly mounted thereon, with the motor and the gears being driven by a chain.

[0055] The rotation of the motor drive end drives the chain to rotate, and under the action of the gear, the roller shaft is driven to rotate. The rotation of the roller shaft drives the bed frame 6 to move, so that the bed frame 6 moves into the preheating unit 3, the drying module and the cooling unit 4.

[0056] A vibration unit 7 is installed in the conveyor unit 2 and matches the bed frame 6;

[0057] The vibration unit 7 includes an electric push rod 8 fixedly mounted on the bottom of the frame 1, a support plate 9 fixedly mounted on the telescopic end of the electric push rod 8, a vibrator 10 fixedly mounted on the support plate 9, a bracket fixedly mounted on the vibrating end of the vibrator 10, and a plurality of support rollers 11 that cooperate with the bed frame 6 are rotatably mounted on the bracket. The spacing between two adjacent support rollers 11 is equal to the spacing between two adjacent roller shafts, and the support rollers 11 and the roller shafts are alternately staggered.

[0058] When the bed frame 6 moves into the drying module, the electric push rod 8 is started, and the electric push rod 8 drives the support plate 9 to move upward. The upward movement of the support plate 9 drives the vibrator 10 to move upward, thereby driving the bracket and the support roller 11 to move upward. The upward movement of the support roller 11 will support the bed frame 6, so that the bed frame 6 is separated from the roller shaft. At this time, the rotation of the roller shaft will not drive the bed frame 6 to move, so that the bed frame 6 is always located inside the drying module.

[0059] During the drying process, the vibrator 10 is started and transmits the vibration generated by the vibrator 10 to the bed frame 6, causing the bed frame 6 to vibrate; the vibration can promote the convection of water in the water-based paint. Under the action of the vibration, the movement of water molecules inside the paint liquid is intensified, and the water originally close to the surface of the paint liquid is more likely to diffuse into the surrounding environment. At the same time, the internal water can also be replenished to the surface more quickly, thereby accelerating the evaporation rate of the water;

[0060] Vibration helps to break up the liquid film formed on the surface of the water-based paint. When the water-based paint is applied to the surface of the bed frame 6, a thin liquid film will be formed on the surface when the water evaporates. This liquid film will hinder the further evaporation of the internal water. Vibration can break up or thin the liquid film, making it easier for the water to migrate from the inside of the paint to the surface and dissipate into the air.

[0061] Vibration can make the internal moisture distribution of water-based paint more even during the drying process. In the absence of vibration, due to factors such as gravity, the moisture in the water-based paint may be unevenly distributed, resulting in inconsistent drying speeds. Vibration can make the moisture in the paint liquid participate in the evaporation process more evenly in all parts, reducing drying defects caused by uneven moisture distribution, such as local over-dryness or over-wetness, bubbles and other problems.

[0062] Before the bed frame 6 enters the drying module, it is preheated by the preheating unit 3 to increase the temperature of the bed frame 6 so that the bed frame 6 is heated evenly. After being dried in the drying module, the bed frame 6 is cooled by the cooling unit 4 and then moved out from the other end of the conveyor unit 2.

[0063] Example 3: This example differs from the technical solution of Example 2 in that: Figure 6-Figure 14 The drying module is composed of an air intake unit 5 and an exhaust unit 35. The air intake unit 5 draws in the outside air, heats it, and blows it toward the bed frame 6. The blowing shape is selected according to the shape of the bed frame 6 to ensure that the air is blown directly onto the bed frame 6 and can also blow air around the bed frame 6 to make the bed frame 6 heated more evenly.

[0064] The air intake unit 5 includes a cover fixedly mounted on the top of the frame 1, a blower box 20 fixedly mounted on the cover, an air outlet mechanism installed in the blower box 20, a first pump 12 fixedly mounted on the frame 1, an air inlet pipe 14 and a first air suction pipe 16 fixedly connected to the first pump 12, and the blower box 20 is connected to the air inlet pipe 14;

[0065] During drying, the first pump 12 draws outside air into the first pump 12 through the first suction pipe 16 and then discharges it into the blower box 20 through the air inlet pipe 14;

[0066] The function of the hood is to block the hot air and reduce the probability of hot air overflow, which not only reduces energy loss but also reduces the risk of injury to surrounding operators.

[0067] A plurality of heating rods 26 are fixedly mounted inside the blast box 20. The blast box 20 is divided into a first chamber 27 and a fourth chamber by two first baffles 24. The air outlet mechanism is located in the fourth chamber, and the heating rods 26 are located in the first chamber 27. A first motor 23 is fixedly mounted on the side of the blast box 20. A first rotating rod is fixedly mounted on the driving end of the first motor 23. A plurality of first blocking plates 25 that cooperate with the two first baffles 24 are fixedly mounted on the first rotating rod. A windshield assembly 19 is mounted on the blast box 20.

[0068] The air entering the blower box 20 is heated by the heating rod 26 in the first chamber 27, causing the air temperature to rise to about 110 degrees, at which time the moisture in the air vaporizes;

[0069] While the first pump 12 is operating, the first motor 23 is started, and the driving end of the first motor 23 drives the first rotating rod to rotate. The rotation of the first rotating rod drives the first blocking plate 25 to rotate. The rotation of the first blocking plate 25 intermittently blocks the gap between the two first baffles 24, so that the hot air in the first chamber 27 intermittently enters the fourth chamber, forming a pulse air intake effect.

[0070] Pulse blowing periodically changes the wind speed, providing a higher wind speed during the blowing stage, which can effectively break the boundary layer on the surface of the water-based paint, increase the relative speed between the air and the water-based paint surface, thereby increasing the driving force for water evaporation and allowing water to diffuse more quickly from the water-based paint surface to the surrounding air;

[0071] Continuous blowing may cause certain parts of the water-based paint to overheat or overdry due to prolonged exposure to high-temperature wind. During the interval of pulse blowing, the surface temperature of the water-based paint will drop, and the heat will have more time to conduct inside the water-based paint, making the temperature of each part of the water-based paint more uniform, reducing local overheating or overdrying, and thus improving drying uniformity.

[0072] The windshield assembly 19 includes a plurality of windshields 21 slidably mounted on the side of the blower box 20 . A plurality of telescopic cylinders cooperating with the corresponding windshields 21 are fixedly mounted on the blower box 20 to control the extension and retraction of the windshields 21 .

[0073] The air outlet mechanism includes a plurality of air nozzles 22 fixedly mounted on the bottom of the blower box 20. Each air nozzle 22 is fixedly mounted with an electric control valve 28. The electric control valve 28 is mounted on the upper portion of the air nozzles 22 located at the periphery. The air nozzles 22 located at the periphery are longer than the air nozzles 22 located at the inner side.

[0074] A laser sensor is fixedly installed at the bottom of the blower box 20, which is used to detect the position and shape of the bed frame 6. The operation of the electric control valve 28 is controlled according to the shape and position of the bed frame 6, and the opening and closing of the air nozzle 22 are controlled. The hot air entering the fourth chamber will be sprayed onto the bed frame 6 through the air nozzle 22, so that the air nozzle 22 only sprays hot air onto the bed frame 6, and no hot air is sprayed onto any part other than the bed frame 6, which can reduce energy loss.

[0075] The hot air ejected from the air nozzles 22 located on the four sides will blow onto the wind shield 21, and the wind direction will be changed by the wind shield 21, so that the hot air will blow to the side of the bed frame 6. Since the bed frame 6 is hollow, part of the hot air will blow into the inside of the bed frame 6, so that the inside and outside of the bed frame 6 are heated more evenly. The length of the air nozzles 22 located on the four sides is greater than that of the air nozzles 22 located on the inside. The purpose of this design is to make the impact force of the hot air ejected from the air nozzles 22 on the four sides greater than that of the air nozzles 22 in the middle position, so that the impact force of the hot air on the bed frame 6 is uniform, thereby improving the drying quality.

[0076] The exhaust unit 35 absorbs the hot air discharged by the intake unit 5. The intake unit 5 and the exhaust unit 35 operate alternately to extend the contact time between the hot air and the bed frame 6.

[0077] The exhaust unit 35 includes an air suction box 18 fixedly mounted on the bottom of the frame 1, and a second pump 13 is fixedly mounted on the frame 1. The second pump 13 and the air suction box 18 are connected through a second air suction pipe 29. The air suction box 18 is fixedly mounted with a second baffle 30 and a third baffle 34. A blocking water absorption mechanism that cooperates with the second baffle 30 and the third baffle 34 is installed in the air suction box 18. The air suction box 18 is divided into a second chamber 32 and a third chamber 33 by the second baffle 30 and the third baffle 34. The blocking water absorption mechanism is located in the third chamber 33.

[0078] The blocking and water absorption mechanism includes a second motor fixedly mounted on the side of the suction box 18, and a shaft is fixedly mounted on the driving end of the second motor. A plurality of second blocking plates 31 are fixedly mounted on the shaft to cooperate with the second baffle 30 and the third baffle 34. A water absorption plate is fixedly mounted on each second blocking plate 31. The water absorption plate is made of porous silica gel and can absorb water vapor in the hot air.

[0079] The rotation of the second motor driving end drives the shaft to rotate, and the rotation of the shaft drives the second blocking plate 31 to rotate, thereby intermittently blocking the gap between the second baffle 30 and the third baffle 34. The blocking at this location is staggered with the blocking of the first baffle 24 by the first blocking plate 25, which means that the first baffle 24 is open, and the hot air in the first chamber 27 enters the fourth chamber, and then is sprayed onto the bed frame 6 through the air nozzle 22. At this time, the second blocking plate 31 blocks the gap between the second baffle 30 and the third baffle 34. At this time, the second pump 13 does not suck away the hot air passing through the bed frame 6, but allows the hot air to stay on the bed frame 6, thereby prolonging the contact time between the hot air and the bed frame 6;

[0080] When the first motor 23 drives the first sealing plate 25 to rotate, the first sealing plate 25 blocks the gap between the two first baffles 24. At this time, the hot air in the first chamber 27 will not enter the fourth chamber, and the air nozzle 22 will not blow air. However, at this time, the second sealing plate 31 will open the gap between the second baffle 30 and the third baffle 34, and the second pump 13 will suck away the hot air on the bed frame 6.

[0081] Two air ducts 36 are fixedly connected in the first chamber 27. The second baffle 30 is hollow in design. The two air ducts 36 are connected to the inside of the second baffle 30. A plurality of air outlet holes that cooperate with the second blocking plate 31 are provided on one side of the second baffle 30 close to the second blocking plate 31.

[0082] When the second pump 13 is started, the hot air in the first chamber 27 will be sucked into the hollow second baffle 30 through the air duct 36, and then discharged through the air outlet on the second baffle 30. The hot air discharged from the air outlet will blow onto the second sealing plate 31, taking away the water vapor on the water absorption plate on the second sealing plate 31, so that the water absorption plate returns to the best water absorption state.

[0083] A circulation pipe 15 is commonly connected between the first pump 12 and the second pump 13 . An exhaust pipe 17 is fixedly connected to the second pump 13 . Both the circulation pipe 15 and the exhaust pipe 17 are equipped with electronically controlled valves that operate alternately.

[0084] The second pump 13 sucks out the third chamber 33 through the second suction pipe 29, then introduces it into the first pump 12 through the circulation pipe 15, and then blows it onto the bed frame 6 through the first pump 12, thereby realizing hot air circulation and reducing heat energy loss;

[0085] However, since part of the hot air entering the third chamber 33 from the first chamber 27 through the air duct 36 will carry moisture on the water absorption plate, if it circulates at this time, the moisture will continue to enter the first pump 12 along with the hot air and be blown onto the bed frame 6 again, resulting in reduced drying efficiency. Therefore, it is necessary to control the opening and closing of the circulation pipe 15 through an electronic control valve at this time;

[0086] When the gap between the second baffle 30 and the third baffle 34 is opened, the second blocking plate 31 is in close contact with the second baffle 30. The hot air discharged from the second baffle 30 is blown directly onto the water absorption plate, removing the moisture on the water absorption plate. At this time, the electronic control valve controls the circulation pipe 15 to close and the exhaust pipe 17 to open. The second pump 13 will discharge the hot air in the third chamber 33 to the outside through the exhaust pipe 17.

[0087] When the gap between the second baffle 30 and the third baffle 34 is closed, the second sealing plate 31 is misaligned with the second baffle 30, and the hot air discharged from the second baffle 30 will be directly blown into the third chamber 33. At this time, the electronic control valve controls the circulation pipe 15 to open and controls the exhaust pipe 17 to close. The second pump 13 will discharge the hot air in the third chamber 33 through the circulation pipe 15 to the first pump 12, thereby realizing the utilization of circulating hot air.

[0088] The specific operating steps of this device are as follows:

[0089] The bed frame 6 is placed on the conveyor unit 2, and then the bed frame 6 is transported to the preheating unit 3 by the conveyor unit 2. After being preheated by the preheating unit 3, the temperature of the bed frame 6 and the water-based paint on the bed frame 6 is raised to 90 degrees;

[0090] The bed frame 6 is then transported into the housing, and the first pump 12 is activated. The operation of the first pump 12 draws outside air into the first pump 12 through the first suction pipe 16, and then discharges it into the blower box 20 through the air inlet pipe 14. The air entering the blower box 20 is heated by the heating rod 26 in the first chamber 27, raising the air temperature to about 110 degrees.

[0091] While the first pump 12 is operating, the first motor 23 is started, and the driving end of the first motor 23 drives the first rotating rod to rotate. The rotation of the first rotating rod drives the first blocking plate 25 to rotate. The rotation of the first blocking plate 25 intermittently blocks the gap between the two first baffles 24, so that the hot air in the first chamber 27 intermittently enters the fourth chamber, forming a pulse air intake effect.

[0092] The laser sensor at the bottom of the blower box 20 detects the position and shape of the bed frame 6. Based on the shape and position of the bed frame 6, the electric control valve 28 is controlled to operate, thereby controlling the opening and closing of the air nozzle 22. The hot air entering the fourth chamber is ejected onto the bed frame 6 through the air nozzle 22, so that the air nozzle 22 only ejects hot air onto the bed frame 6. The hot air ejected from the air nozzles 22 located on the periphery is blown onto the windshield 21, where it changes direction and blows to the sides of the bed frame 6.

[0093] When the first motor 23 drives the first blocking plate 25 to rotate, the first blocking plate 25 blocks the gap between the two first baffles 24. At this time, the hot air in the first chamber 27 will not enter the fourth chamber, and the air nozzle 22 will not blow air. However, at this time, the second blocking plate 31 will open the gap between the second baffle 30 and the third baffle 34, and the second pump 13 will suck the hot air on the bed frame 6 away.

[0094] When the second pump 13 is started, the hot air in the first chamber 27 is sucked into the hollow second baffle 30 through the air duct 36, and then discharged through the air outlet on the second baffle 30. The hot air discharged from the air outlet blows onto the second blocking plate 31, taking away the water vapor on the water absorption plate on the second blocking plate 31;

[0095] The second pump 13 sucks out the third chamber 33 through the second suction pipe 29, then introduces it into the first pump 12 through the circulation pipe 15, and then blows it onto the bed frame 6 through the first pump 12, thus realizing hot air circulation;

[0096] When the gap between the second baffle 30 and the third baffle 34 is opened, the second blocking plate 31 is in close contact with the second baffle 30. The hot air discharged from the second baffle 30 is blown directly onto the water absorption plate, removing the moisture on the water absorption plate. At this time, the electronic control valve controls the circulation pipe 15 to close and the exhaust pipe 17 to open. The second pump 13 will discharge the hot air in the third chamber 33 to the outside through the exhaust pipe 17.

[0097] When the gap between the second baffle 30 and the third baffle 34 is closed, the second sealing plate 31 is misaligned with the second baffle 30, and the hot air discharged from the second baffle 30 will be directly blown into the third chamber 33. At this time, the electronic control valve controls the circulation pipe 15 to open and controls the exhaust pipe 17 to close. The second pump 13 will discharge the hot air in the third chamber 33 through the circulation pipe 15 to the first pump 12, thereby realizing the utilization of circulating hot air.

[0098] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A drying device for spraying paint on the surface of a modular and freely combinable bed frame, comprising a frame (1) and a bed frame (6), characterized in that: It also includes a conveying unit (2), a preheating unit (3), a cooling unit (4) and a drying module installed on the frame (1); The conveyor unit (2) is equipped with a vibration unit (7) that cooperates with the bed frame (6). Before the bed frame (6) enters the drying module, it is preheated by the preheating unit (3) to increase the temperature of the bed frame (6). After being dried in the drying module, the bed frame (6) is cooled by the cooling unit (4) and then moved out from the other end of the conveyor unit (2). The drying module is composed of an air intake unit (5) and an exhaust unit (35). The air intake unit (5) draws in the outside air, heats it, and blows it toward the bed frame (6). The blowing shape is selected according to the shape of the bed frame (6), and the air can be blown around the bed frame (6) to make the bed frame (6) heated more evenly. The exhaust unit (35) absorbs the hot air discharged by the air intake unit (5). The air intake unit (5) and the exhaust unit (35) operate alternately to extend the contact time between the hot air and the bed frame (6).

2. The drying device for spraying paint on the surface of a modular and freely combinable bed frame according to claim 1 is characterized in that: The conveyor group (2) comprises a frame, a plurality of rollers are rotatably mounted on the frame, a gear is fixedly mounted on each of the rollers, a motor is fixedly mounted on the frame, and the motor and the plurality of gears are driven by a chain.

3. The drying device for spraying paint on the surface of a modular and freely combinable bed frame according to claim 2 is characterized in that: The vibration unit (7) includes an electric push rod (8) fixedly mounted on the bottom of the frame (1); a support plate (9) is fixedly mounted on the telescopic end of the electric push rod (8); a vibrator (10) is fixedly mounted on the support plate (9); a bracket is fixedly mounted on the vibrating end of the vibrator (10); a plurality of support rollers (11) that cooperate with the bed frame (6) are rotatably mounted on the bracket; the spacing between two adjacent support rollers (11) is equal to the spacing between two adjacent roller shafts, and the support rollers (11) and the roller shafts are alternately staggered.

4. The drying device for spraying paint on the surface of a modular and freely combinable bed frame according to claim 1 is characterized in that: The air intake unit (5) comprises a cover body fixedly mounted on the top of the frame (1), a blower box (20) fixedly mounted on the cover body, an air outlet mechanism mounted in the blower box (20), a first pump (12) fixedly mounted on the frame (1), an air inlet pipe (14) and a first air suction pipe (16) fixedly connected to the first pump (12), and the blower box (20) is in communication with the air inlet pipe (14); A plurality of heating rods (26) are fixedly installed inside the blast box (20), and the blast box (20) is divided into a first chamber (27) and a fourth chamber by two first baffles (24). The air outlet mechanism is located in the fourth chamber, and the heating rods (26) are located in the first chamber (27). A first motor (23) is fixedly installed on the side of the blast box (20), a first rotating rod is fixedly installed on the driving end of the first motor (23), and a plurality of first blocking plates (25) that cooperate with the two first baffles (24) are fixedly installed on the first rotating rod. A wind shield assembly (19) is installed on the blast box (20); The windshield assembly (19) comprises a plurality of windshields (21) slidably mounted on the side of a blast box (20); a plurality of telescopic cylinders matched with corresponding windshields (21) are fixedly mounted on the blast box (20) to control the telescopic movement of the windshields (21).

5. The drying device for spraying paint on the surface of a modular and freely combinable bed frame according to claim 4 is characterized in that: The air outlet mechanism comprises a plurality of air nozzles (22) fixedly mounted on the bottom of the blower box (20), and an electric control valve (28) is fixedly mounted on each of the air nozzles (22). The electric control valve (28) is mounted on the upper portion of the air nozzles (22) located at the periphery, and the length of the air nozzles (22) located at the periphery is greater than the length of the air nozzles (22) located at the inner side.

6. The drying device for spraying paint on the surface of a modular and freely combinable bed frame according to claim 4 is characterized in that: The exhaust unit (35) includes an air suction box (18) fixedly mounted on the bottom of the frame (1), and a second pump (13) fixedly mounted on the frame (1). The second pump (13) and the air suction box (18) are connected via a second air suction pipe (29). The air suction box (18) is fixedly mounted with a second baffle (30) and a third baffle (34). A blocking water absorption mechanism matched with the second baffle (30) and the third baffle (34) is mounted in the air suction box (18). The air suction box (18) is divided into a second chamber (32) and a third chamber (33) by the second baffle (30) and the third baffle (34). The blocking water absorption mechanism is located in the third chamber (33).

7. The drying device for spraying paint on the surface of a modular and freely combinable bed frame according to claim 6 is characterized in that: The blocking and water-absorbing mechanism comprises a second motor fixedly mounted on the side of the air suction box (18); a shaft body is fixedly mounted on the driving end of the second motor; a plurality of second blocking plates (31) matched with the second baffle (30) and the third baffle (34) are fixedly mounted on the shaft body; and a water-absorbing plate is fixedly mounted on each of the second blocking plates (31).

8. The drying device for spraying paint on the surface of a modular and freely combinable bed frame according to claim 7 is characterized in that: Two air ducts (36) are fixedly connected in the first chamber (27); the second baffle (30) is hollow in design; the two air ducts (36) are connected to the interior of the second baffle (30); and a plurality of air outlet holes that match the second blocking plate (31) are provided on one side of the second baffle (30) close to the second blocking plate (31).

9. The drying device for spraying paint on the surface of a modular and freely combinable bed frame according to claim 8, characterized in that: The first pump (12) and the second pump (13) are connected to each other via a circulation pipe (15), the second pump (13) is fixedly connected to an exhaust pipe (17), and both the circulation pipe (15) and the exhaust pipe (17) are equipped with electronic control valves that operate alternately.

10. A method for drying paint sprayed on the surface of a modular and freely combinable bed frame, used for the drying device for spraying paint on the surface of a modular and freely combinable bed frame according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, placing the bed frame (6) on the conveyor unit (2), and then transporting the bed frame (6) to the preheating unit (3) through the conveyor unit (2). After being preheated by the preheating unit (3), the temperature of the bed frame (6) and the water-based paint on the bed frame (6) rises to 90 degrees; S2, then continue to transport the bed frame (6) into the drying module, the air intake unit (5) in the drying module will blow air from the top of the bed frame (6), and automatically change the air outlet position according to the position and shape of the bed frame (6), so that the air outlet position is always aligned with the bed frame (6), blow and dry the bed frame (6), and blow and dry the surrounding areas of the bed frame (6); S3. During the drying process, the air intake unit (5) adopts intermittent blowing, and is used in conjunction with the exhaust unit (35) for intermittent suction, so that the contact time between the hot air and the bed frame (6) is longer and the contact is more complete. In addition, the exhaust unit (35) can also discharge the moisture carried by the hot air, and then recycle the discharged hot air to reduce energy loss.

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