Hot air circulation drying and coating mechanism

Abstract

This utility model provides a hot air circulating drying coating mechanism, relating to the field of coating machine technology. It includes a machine base with fixed side plates on both sides. A top platform is fixed to one side of each side plate. A bottom air duct is opened inside the machine base, and a top air duct is opened inside the top platform. A heating element is installed inside the top platform. An air duct is connected to one side of the machine base, and the other end of the air duct is connected to one side of the top platform. Both ends of the air duct are fixed by sliding fixing devices. Bottom support bars are arrayed and fixed to the inner wall of the bottom air duct. A first fan is installed on the top of the multiple bottom support bars, and a top support bar is arrayed on the top of the first fan. The top support bars are fixed to the inner wall of the bottom air duct. A second fan is installed at the bottom of the top platform. The second fan is fixed to the bottom of the top platform by a clamping device. The clamping device includes clamping grooves, and multiple clamping grooves are opened at the bottom of the top platform. A first engaging shaft and a second engaging shaft are provided on the inner wall of the clamping grooves, and a first sliding groove is opened on the inner wall of the clamping grooves.

Description

Technical Field

[0001] This utility model relates to the field of coating machine technology, and in particular to a hot air circulating drying coating mechanism. Background Technology

[0002] The hot air drying mechanism of the coating machine is a key device for achieving rapid drying of the coating. It uses a high-temperature hot air system to blow hot air evenly onto the surface of the coated substrate, accelerating the evaporation of solvents or moisture. The drying chamber is equipped with heating elements and fans to ensure stable hot air temperature and air volume. Hot air drying is highly efficient and has a wide range of applications, meeting the drying needs of various coating processes and improving processing efficiency. It is an indispensable and important link in coating production.

[0003] In existing technologies, some coating machines use a non-circulating hot air drying system. Direct hot air discharge leads to a significant waste of heat, a substantial increase in energy consumption, and a rise in production costs. Non-circulating hot air cannot create a stable temperature field within the drying chamber, resulting in uneven heating of the coating and inconsistent drying speeds, which in turn affects coating quality, causing problems such as cracks, blistering, or poor adhesion. Furthermore, directly discharged hot air releases solvent vapors into the workshop environment, polluting the air and posing safety risks, such as explosions caused by excessively high concentrations of volatile solvents. At the same time, frequent replenishment of fresh air causes large fluctuations in temperature and humidity within the drying chamber, further affecting the stability of the drying effect. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hot air circulation drying coating mechanism.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a hot air circulating drying coating mechanism, including a machine base, with fixed side plates fixed on both sides of the machine base, a top platform fixed on one side of the two fixed side plates, a bottom air duct opened inside the machine base, a top air duct opened inside the top platform, a heating element installed inside the top platform, an air duct connected to one side of the machine base, and the other end of the air duct connected to one side of the top platform, the two ends of the air duct being fixed by a sliding fixing device, bottom support bars being arrayed and fixed on the inner wall of the bottom air duct, a first fan being installed on the top of multiple bottom support bars, a top support bar being arrayed on the top of the first fan, the top support bar being fixed to the inner wall of the bottom air duct, and a second fan being installed at the bottom of the top platform, the second fan being fixed to the bottom of the top platform by a clamping device.

[0006] Preferably, the clamping device includes clamping grooves, and multiple clamping grooves are provided at the bottom of the top platform. The inner wall of the clamping groove is provided with a first engaging shaft and a second engaging shaft. The inner wall of the clamping groove is provided with a first sliding groove. A first sliding block is fixed at both ends of the first engaging shaft and the second engaging shaft. The first sliding block slides on the inner wall of the first sliding groove. A first spring is fixed on both sides of the first sliding block. The first spring is fixed to the inner wall of the first sliding groove. Multiple engaging seats are fixed at the top of the second fan. In existing technologies, the inability to easily disassemble the fan of the hot air unit in a coating machine is a significant drawback. Because the fan is typically fixed in a complex duct or equipment structure, disassembly requires the removal of multiple components, which is time-consuming and labor-intensive. This design makes daily maintenance and troubleshooting extremely inconvenient. If the fan malfunctions, maintenance personnel need to spend a considerable amount of time disassembling and reinstalling, severely impacting the normal operating efficiency of the coating machine and causing production interruptions. Furthermore, the complex disassembly process can damage other components, increasing maintenance costs. The inconvenience of fan disassembly also limits the flexibility and maintainability of the equipment, causing numerous problems for production management and equipment maintenance. To address these issues, this utility model adopts a fan disassembly structure. When disassembly of the fan is required, the second fan is moved along... Pulling vertically towards the ground, under the action of force, multiple locking seats disengage from the corresponding first and second locking shafts. Under the action of force, the first and second locking shafts drive the first sliding block to slide in the first sliding groove. After disassembly, the two first sliding blocks return to their original positions under the action of the first spring, allowing for further convenient installation. This significantly improves the equipment's maintenance efficiency, reduces repair time and costs. The quick disassembly and assembly design of the fan ensures that the coating machine can quickly resume operation in the event of a fan failure, avoiding production interruption. At the same time, it reduces the risk of component damage caused by complex disassembly processes, enhances the overall flexibility and maintainability of the equipment, improves the convenience of production management and the efficiency of equipment maintenance, thereby optimizing the overall performance and service life of the coating machine.

[0007] Preferably, the bottom of the second fan is provided with a fan housing, and both the fan housing and the corner of the second fan are provided with circular grooves. The inner wall of the circular groove at the corner of the fan housing is provided with a limiting groove, and the inner wall of the circular groove at the corner of the fan housing is provided with a square groove. The corner of the second fan is provided with a recovery groove. The inner wall of the circular groove is provided with a circular shaft. One end of the circular shaft is fixed with a first limiting block, and the other end of the circular shaft is fixed with a second limiting block. The second limiting block slides on the inner wall of the recovery groove. A second spring is fixed on one side of the second limiting block, and the other end of the second spring is fixed to the inner wall of the recovery groove. In existing technologies, the inability to easily disassemble the fan casing is a significant drawback. Because the casing is tightly fixed to the fan body, the entire fan must be disassembled for cleaning the interior. This is not only time-consuming and labor-intensive but also increases the risk of damage during disassembly and assembly. Complete disassembly leads to prolonged equipment downtime, impacting production efficiency. Furthermore, frequent disassembly and assembly can damage the fan's sealing and precision, reducing equipment reliability and lifespan. In addition, the complex disassembly and assembly process places higher demands on the technical skills of maintenance personnel, increasing maintenance costs and operational difficulty. To address these issues, this utility model adopts a structure for easy casing disassembly. When disassembly of the fan casing is required, pull down the round shaft until it can rotate. After releasing the limiting groove from the first limiting block, the fan casing can be easily disassembled by rotating it 90 degrees. When it is necessary to install the fan casing, insert the round shaft along the round and square grooves, then pull the round shaft and rotate it 90 degrees. Under the action of the second limiting block and the second spring, the limiting groove will limit the first limiting block, thus completing the installation. This significantly reduces equipment downtime, improves production efficiency, and the easily disassembled casing can quickly expose the inside of the fan, facilitating rapid cleaning and maintenance, reducing the risk of equipment damage caused by disassembly and assembly, extending the service life of the fan, reducing the technical requirements for maintenance personnel, reducing maintenance costs and operational difficulty, and improving the overall reliability and maintainability of the equipment.

[0008] Preferably, the sliding fixing device includes two sliding plates fixed to the surface of the duct. Two first support plates are fixed to one side of the machine base, a second support plate is fixed to one side of the first support plates, and a third support plate is fixed to the bottom of the first and second support plates. Anti-slip textures are provided on one side of each sliding plate. By setting up the sliding fixing device, including two sliding plates fixed to the surface of the duct and cooperating first, second, and third support plates, and the anti-slip texture design on one side of the sliding plates, stability during fixing is ensured. This structure allows the duct to be quickly detached from the support plate structure with simple operation when disassembly is required, achieving convenient duct disassembly, greatly improving equipment maintenance efficiency and flexibility, reducing disassembly and assembly time and labor intensity, and also reducing the risk of equipment damage caused by frequent disassembly and assembly.

[0009] Preferably, the engaging seat has an arc-shaped surface that is smooth. This makes the engaging operation smoother, reduces frictional resistance and jamming during the engaging process. This design not only improves the stability and reliability of the engaging process, but also effectively reduces component wear caused by friction, extends the service life of the equipment, simplifies the assembly and disassembly process, and improves work efficiency and user experience.

[0010] Preferably, the surface of the circular shaft is provided with a gripping groove, and the inner wall of the gripping groove is provided with an inclined groove. This significantly improves the convenience of pulling the circular shaft. The gripping groove provides the operator with a reliable point of leverage, while the inclined groove further optimizes the stability and friction of the grip, making it easier to pull the circular shaft and less prone to slippage. This design not only improves operating efficiency but also reduces the risk of equipment damage or operational errors caused by improper force, enhancing the practicality of the equipment and the user experience.

[0011] Preferably, sealing gaskets are fixed at both ends of the duct, and the sealing gaskets are made of polyurethane material. The use of polyurethane sealing gaskets at both ends significantly optimizes the airtightness between the duct and the ductwork. Polyurethane material has excellent elasticity, wear resistance, and chemical corrosion resistance, effectively filling tiny gaps at the connection between the duct and the ductwork, preventing air leakage, ensuring efficient utilization of hot air during the conveying process, reducing energy loss, and preventing external dust or impurities from entering the ductwork system, thus ensuring the stable operation of the coating machine's hot air device and the quality of coating drying.

[0012] Beneficial effects:

[0013] 1. In existing technologies, some coating machines use a non-circulating hot air drying system. Direct hot air discharge leads to significant heat waste, increased energy consumption, and higher production costs. Non-circulating hot air cannot create a stable temperature field within the drying chamber, resulting in uneven heating of the coating and inconsistent drying speeds, which in turn affects coating quality, causing problems such as cracks, blistering, or poor adhesion. Furthermore, directly discharged hot air releases solvent vapors into the workshop environment, polluting the air and posing safety risks; for example, excessively high concentrations of volatile solvents can lead to explosions. Additionally, frequent replenishment of fresh air can affect the temperature and humidity within the drying chamber. Significant fluctuations in temperature further affect the stability of the drying effect. To address this issue, this invention employs a hot air circulation structure, which significantly improves energy efficiency, reduces production costs, and ensures a uniform and stable temperature field within the drying chamber. This results in even heating of the coating and consistent drying speed, effectively preventing quality problems such as coating cracks, blistering, or poor adhesion. Furthermore, the circulation system reduces solvent vapor emissions, lowering workshop air pollution and safety risks, avoiding the explosion hazard caused by excessively high solvent volatile concentrations. It also reduces temperature and humidity fluctuations caused by frequent fresh air replenishment, further enhancing the stability of the drying effect and the reliability of product quality.

[0014] 2. In existing technologies, the inability to easily disassemble the fan of the hot air device in a coating machine is a significant drawback. Since the fan is typically fixed in complex piping or equipment structures, disassembly requires disassembling multiple components, which is time-consuming and labor-intensive. This design makes daily maintenance and troubleshooting extremely inconvenient. If the fan malfunctions, maintenance personnel need to spend a considerable amount of time disassembling and reinstalling it, severely impacting the normal operating efficiency of the coating machine and causing production interruptions. Furthermore, the complex disassembly process can damage other components, increasing maintenance costs. The inconvenience of disassembling the fan also limits the flexibility and maintainability of the equipment, causing numerous problems for production management and equipment maintenance. To address these issues, this utility model adopts a fan disassembly structure, significantly improving equipment maintenance efficiency and reducing maintenance time and costs. The quick disassembly and assembly design of the fan ensures that the coating machine can quickly resume operation in the event of a fan failure, avoiding production interruptions. It also reduces the risk of component damage caused by the complex disassembly process, enhances the overall flexibility and maintainability of the equipment, improves the convenience of production management and the efficiency of equipment maintenance, thereby optimizing the overall performance and service life of the coating machine.

[0015] 3. In existing technologies, the inability to easily disassemble the fan casing is a significant drawback. Because the casing is tightly fixed to the fan body, the entire fan must be disassembled for cleaning. This is not only time-consuming and labor-intensive but also increases the risk of damage during disassembly and assembly. Complete disassembly leads to prolonged equipment downtime, impacting production efficiency. Furthermore, frequent disassembly and assembly can damage the fan's sealing and precision, reducing its reliability and lifespan. In addition, the complex disassembly and assembly process places higher demands on the technical skills of maintenance personnel, increasing maintenance costs and operational difficulty. To address these issues, this utility model adopts a casing that allows for easy disassembly, significantly reducing equipment downtime and improving production efficiency. The easily disassembled casing quickly exposes the fan's interior, facilitating rapid cleaning and maintenance, reducing the risk of equipment damage due to disassembly and assembly, extending the fan's lifespan, while simultaneously lowering the technical skill requirements for maintenance personnel, reducing maintenance costs and operational difficulty, and improving the overall reliability and maintainability of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the clamping device of this utility model;

[0018] Figure 3 This is an exploded view of the detachable structure of the fan housing of this utility model;

[0019] Figure 4 This is a cross-sectional view of the detachable structure of the fan housing of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the duct easy-to-disassemble structure of this utility model;

[0021] Figure 6 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 7 for Figure 2 Enlarged view of point B in the middle;

[0023] Figure 8 for Figure 3 Enlarged view of point C in the middle;

[0024] Figure 9 for Figure 4 Enlarged view at point D;

[0025] Figure 10 for Figure 5 Enlarged view of point E in the middle.

[0026] Legend:

[0027] 1. Machine base; 101. Fixed side plate; 102. Top platform; 103. Air duct; 104. Bottom support bar; 105. First fan; 106. Top support bar; 107. Second fan; 108. Fan housing; 109. Top air duct; 110. Bottom air duct; 2. Clamping groove; 201. First clamping shaft; 202. Second clamping shaft; 203. First sliding groove; 204. First sliding block; 205. First spring; 206. Clamping seat; 301. Circular groove; 302. Limiting groove; 303. Square groove; 304. Circular shaft; 305. First limiting block; 306. Second limiting block; 307. Second spring; 4. Sliding plate; 401. First support plate; 402. Second support plate; 403. Third support plate; 5. Arc surface; 6. Grip groove. Detailed Implementation

[0028] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific implementation examples:

[0031] Reference Figure 1-10The hot air circulating drying coating mechanism includes a machine base 1. Fixed side plates 101 are fixed on both sides of the machine base 1. A top platform 102 is fixed on one side of the two fixed side plates 101. A bottom air duct 110 is opened inside the machine base 1. A top air duct 109 is opened inside the top platform 102. A heating element is installed inside the top platform 102. An air duct 103 is connected to one side of the machine base 1. The other end of the air duct 103 is connected to one side of the top platform 102. Both ends of the air duct 103 are fixed by a sliding fixing device. Bottom support bars 104 are arrayed and fixed on the inner wall of the bottom air duct 110. A first fan 105 is installed on the top of the multiple bottom support bars 104. A top support bar 106 is arrayed on the top of the first fan 105. The top support bar 106 is fixed to the inner wall of the bottom air duct 110. A second fan 107 is installed at the bottom of the top platform 102. The second fan 107 is fixed to the bottom of the top platform 102 by a clamping device. In existing technologies, some coating machines use a non-circulating hot air drying system. Direct hot air discharge leads to significant heat waste, increased energy consumption, and higher production costs. Non-circulating hot air cannot create a stable temperature field within the drying chamber, resulting in uneven heating of the coating and inconsistent drying speeds. This negatively impacts coating quality, causing problems such as cracks, blistering, or poor adhesion. Furthermore, directly discharged hot air releases solvent vapors into the workshop environment, polluting the air and posing safety risks; for example, excessively high concentrations of volatile solvents can lead to explosions. Meanwhile, frequent replenishment of fresh air will cause large fluctuations in temperature and humidity inside the drying oven, further affecting the stability of the drying effect. To address this problem, this utility model adopts a hot air circulation structure. When processing is performed, the heating element and the second fan 107 are activated, which enables the second fan 107 to blow hot air downwards. At the same time, the first fan 105 is driven. Under the action of the first fan 105, the hot air is drawn into the bottom air duct 110, passes through the bottom end of the air duct 103, and reaches the upper end of the air duct 103 where it is blown out again by the second fan 107, thereby realizing hot air circulation.

[0032] The clamping device includes clamping grooves 2, and multiple clamping grooves 2 are provided at the bottom of the top platform 102. The inner wall of the clamping groove 2 is provided with a first engaging shaft 201 and a second engaging shaft 202. The inner wall of the clamping groove 2 is provided with a first sliding groove 203. A first sliding block 204 is fixed at both ends of the first engaging shaft 201 and the second engaging shaft 202. The first sliding block 204 slides on the inner wall of the first sliding groove 203. A first spring 205 is fixed on both sides of the first sliding block 204. The first spring 205 is fixed to the inner wall of the first sliding groove 203. Multiple engaging seats 206 are fixed at the top of the second fan 107. In existing technologies, the inability to easily disassemble the fan of the hot air unit in a coating machine is a significant drawback. Because the fan is typically fixed within complex ductwork or equipment structures, disassembly requires the removal of multiple components, which is time-consuming and labor-intensive. This design makes routine maintenance and troubleshooting extremely inconvenient. If the fan malfunctions, maintenance personnel must spend considerable time disassembling and reinstalling it, severely impacting the coating machine's operational efficiency and potentially causing production interruptions. Furthermore, the complex disassembly process can damage other components, increasing maintenance costs. The inconvenience of disassembling the fan also limits the equipment's flexibility and maintainability, hindering production management. The maintenance of equipment has caused many problems. To address these issues, this utility model adopts a convenient disassembly structure for the fan. When the fan needs to be disassembled, the second fan 107 is pulled along the direction perpendicular to the ground. Under the action of force, multiple locking seats 206 disengage from the corresponding first locking shaft 201 and second locking shaft 202. Under the action of force, the first locking shaft 201 and second locking shaft 202 drive the first sliding block 204 to slide in the first sliding groove 203. After disassembly is completed, the two first sliding blocks 204 return to their original positions under the action of the first spring 205, ready for further convenient installation.

[0033] The bottom of the second fan 107 is provided with a fan housing 108. Both the fan housing 108 and the corners of the second fan 107 are provided with circular grooves 301. The inner wall of the circular groove 301 at the corner of the fan housing 108 is provided with a limiting groove 302. The inner wall of the circular groove 301 at the corner of the fan housing 108 is provided with a square groove 303. The corner of the second fan 107 is provided with a recovery groove. The inner wall of the circular groove 301 is provided with a circular shaft 304. One end of the circular shaft 304 is fixed with a first limiting block 305, and the other end of the circular shaft 304 is fixed with a second limiting block 306. The second limiting block 306 slides on the inner wall of the recovery groove. A second spring 307 is fixed on one side of the second limiting block 306, and the other end of the second spring 307 is fixed to the inner wall of the recovery groove. In existing technologies, the inability to easily disassemble the fan casing is a significant drawback. Because the casing is tightly fixed to the fan body, the entire fan must be disassembled for internal cleaning. This is not only time-consuming and labor-intensive but also increases the risk of damage during disassembly and assembly. Complete disassembly leads to prolonged equipment downtime, impacting production efficiency. Furthermore, frequent disassembly and assembly can damage the fan's sealing and precision, reducing equipment reliability and lifespan. In addition, the complex disassembly and assembly process places higher demands on the technical skills of maintenance personnel, increasing maintenance costs and operational difficulty. To address these issues, this utility model adopts a design that allows for easy disassembly of the casing. When the fan housing 108 needs to be disassembled, pull down the round shaft 304 until it can rotate. At this point, the limiting groove 302 releases the limiting block 305. Then rotate it 90 degrees to easily disassemble the fan housing 108. When the fan housing 108 needs to be installed, insert the round shaft 304 along the round groove 301 and the square groove 303. Then pull the round shaft 304 and rotate it 90 degrees. Under the action of the second limiting block 306 and the second spring 307, the limiting groove 302 limits the first limiting block 305, and the installation is completed.

[0034] The sliding fixing device includes two sliding plates 4, which are fixed to the surface of the duct 103. Two first support plates 401 are fixed to one side of the machine base 1, and a second support plate 402 is fixed to one side of each first support plate 401. A third support plate 403 is fixed to the bottom of the first and second support plates 401 and 402. Anti-slip textures are provided on one side of each sliding plate 4. By setting up the sliding fixing device, including two sliding plates fixed to the surface of the duct and the corresponding first, second, and third support plates, the anti-slip texture design on one side of the sliding plates ensures stability during fixing. This structure allows the duct to be quickly and easily disassembled from the support plate structure when disassembly is required, achieving convenient duct disassembly. This greatly improves the maintenance efficiency and flexibility of the equipment, reduces disassembly and assembly time and labor intensity, and also reduces the risk of damage to the equipment due to frequent disassembly and assembly. The locking seat 206 has an arc surface 5 that is smooth, making the locking operation smoother and reducing frictional resistance and jamming during the locking process. This design not only improves the stability and reliability of the locking but also effectively reduces friction-induced damage. The wear and tear of components extends the service life of the equipment, while simplifying the assembly and disassembly process, improving work efficiency and user experience. The surface of the round shaft 304 is provided with a gripping groove 6, and the inner wall of the gripping groove 6 is provided with an inclined groove, which significantly improves the convenience of pulling the round shaft. The gripping groove provides the operator with a reliable point of force, while the inclined groove further optimizes the stability and friction of the grip, making it easier to pull the round shaft and less prone to slippage. This design not only improves operating efficiency, but also reduces the risk of equipment damage or operational errors caused by improper force, enhancing the practicality of the equipment and user experience. Both ends of the air duct 103 are fixed with sealing gaskets made of polyurethane material. The sealing gaskets fixed at both ends with polyurethane material significantly optimize the air tightness between the air duct and the air channel. Polyurethane material has excellent elasticity, wear resistance and chemical corrosion resistance, which can effectively fill the small gaps at the connection between the air duct and the air channel, prevent air leakage, ensure the efficient use of hot air during the transportation process, reduce energy loss, and at the same time prevent external dust or impurities from entering the air channel system, ensuring the stable operation of the hot air device of the coating machine and the coating drying quality.

[0035] The working principle of this utility model is as follows: When processing is performed, the heating element and the second fan 107 are activated, enabling the second fan 107 to blow hot air downwards. Simultaneously, the first fan 105 is driven, drawing the hot air through the bottom air duct 110, through the bottom of the air duct 103, and then back out through the second fan 107 at the top of the air duct 103, thus achieving hot air circulation. When the fan needs to be disassembled, the second fan 107 is pulled vertically. Under the force, multiple locking seats 206 disengage from their corresponding first locking shafts 201 and second locking shafts 202. Under the force, the first locking shafts 201 and 202 drive the first sliding block 204... The first sliding block 204 slides in the groove 203. After disassembly, the two first sliding blocks 204 return to their original positions under the action of the first spring 205. For further convenient installation, when it is necessary to disassemble the fan housing 108, pull the round shaft 304 down until it can rotate. At this time, the limiting groove 302 releases the limiting block 305. Then rotate it 90 degrees to easily disassemble the fan housing 108. When it is necessary to install the fan housing 108, insert the round shaft 304 along the round groove 301 and the square groove 303. Then pull the round shaft 304 and rotate it 90 degrees. Under the action of the second limiting block 306 and the second spring 307, the limiting groove 302 limits the first limiting block 305, and the installation is completed.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hot air circulating drying coating mechanism, comprising a machine base (1), characterized in that: The machine base (1) is fixed with fixed side plates (101) on both sides. A top platform (102) is fixed to one side of each of the two fixed side plates (101). A bottom air duct (110) is provided inside the machine base (1). A top air duct (109) is provided inside the top platform (102). A heating element is provided inside the top platform (102). An air duct (103) is connected to one side of the machine base (1). The other end of the air duct (103) is connected to one side of the top platform (102). Both ends of the air duct (103) are connected to... The bottom air duct (110) is fixed by a sliding fixing device. The bottom support strips (104) are fixed in an array on the inner wall of the bottom air duct (110). The top of the multiple bottom support strips (104) is provided with a first fan (105). The top of the first fan (105) is provided with a top support strip (106). The top support strip (106) is fixed to the inner wall of the bottom air duct (110). The bottom of the top platform (102) is provided with a second fan (107). The second fan (107) is fixed to the bottom of the top platform (102) by a clamping device.

2. The hot air circulating drying coating mechanism according to claim 1, characterized in that: The clamping device includes clamping grooves (2), and multiple clamping grooves (2) are provided at the bottom of the top platform (102). The inner wall of the clamping groove (2) is provided with a first clamping shaft (201) and a second clamping shaft (202). The inner wall of the clamping groove (2) is provided with a first sliding groove (203). Both ends of the first clamping shaft (201) and the second clamping shaft (202) are fixed with a first sliding block (204). The first sliding block (204) slides on the inner wall of the first sliding groove (203). Both sides of the first sliding block (204) are fixed with a first spring (205). The first spring (205) is fixed to the inner wall of the first sliding groove (203). Multiple clamping seats (206) are fixed on the top of the second fan (107).

3. The hot air circulating drying coating mechanism according to claim 1, characterized in that: The second fan (107) has a fan housing (108) at its bottom. Both the fan housing (108) and the second fan (107) have circular grooves (301) at their corners. The inner wall of the circular groove (301) at the corner of the fan housing (108) has a limiting groove (302). The inner wall of the circular groove (301) at the corner of the fan housing (108) has a square groove (303). The second fan (107) has a recovery groove at its corner. The inner wall of the circular groove (301) has a circular shaft (304). One end of the circular shaft (304) is fixed with a first limiting block (305), and the other end of the circular shaft (304) is fixed with a second limiting block (306). The second limiting block (306) slides on the inner wall of the recovery groove. A second spring (307) is fixed on one side of the second limiting block (306), and the other end of the second spring (307) is fixed to the inner wall of the recovery groove.

4. The hot air circulating drying coating mechanism according to claim 1, characterized in that: The sliding fixing device includes two sliding plates (4), the two sliding plates (4) are fixed to the surface of the air duct (103), two first support plates (401) are fixed on one side of the machine base (1), a second support plate (402) is fixed on one side of the first support plate (401), a third support plate (403) is fixed at the bottom of the first support plate (401) and the second support plate (402), and anti-slip texture is provided on one side of the sliding plate (4).

5. The hot air circulating drying coating mechanism according to claim 2, characterized in that: The locking seat (206) has an arc surface (5) for locking, and the arc surface (5) is smooth.

6. The hot air circulating drying coating mechanism according to claim 3, characterized in that: The circular shaft (304) has a gripping groove (6) on its surface, and the inner wall of the gripping groove (6) has an inclined groove.

7. The hot air circulating drying coating mechanism according to claim 1, characterized in that: Both ends of the air duct (103) are fixed with sealing gaskets, which are made of polyurethane material.

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