Segmented coating oven

Abstract

The invention discloses a sectional type coating drying oven which comprises a first cavity, a second cavity, a drying assembly, a heating assembly, a fan assembly, a filter and a heat insulation plate. The first cavity and the second cavity are formed through separation of a heat insulation plate, an air inlet and an air return opening are formed in the heat insulation plate, and air path circulation of the first cavity and the second cavity is achieved through the air inlet and the air return opening; the drying assembly is installed in the first cavity, a fan assembly is arranged at an air inlet of the second cavity, a heating assembly is arranged at an outlet of the fan assembly, and a filter is arranged behind the heating assembly. According to the segmented coating oven, the problems that traditional equipment is large in size, difficult to adjust and inconvenient to maintain are solved, and the flexibility and adaptability of the equipment are improved; the cavity can independently adjust the temperature and the air volume, the drying efficiency and the control precision are improved, local maintenance is supported, the downtime can be shortened, and the production continuity and the equipment utilization rate are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coating ovens, in particular to a segmented coating oven. Background Art

[0002] In the coating production field, the coating oven is a key piece of equipment. Its design and performance have a crucial impact on the efficiency of the coating process, product quality, and energy consumption control. During the coating process, after the coating material is applied to the coating surface, it needs to be dried and cured in the oven to ensure good adhesion, uniformity, and physical and chemical properties. Therefore, the oven's temperature control accuracy, hot air circulation method, drying efficiency, exhaust system design, and overall structural layout all directly affect the quality stability and production efficiency of the final product.

[0003] Currently, most coating ovens utilize a monolithic design, integrating the heating, hot air circulation, temperature control, and exhaust functions required for the entire drying process into a single, long, enclosed chamber. While this structure ensures the continuity and stability of the drying process to a certain extent, it also presents numerous challenges in practical applications. First, monolithic ovens are bulky and complex, occupying significant workshop space and presenting significant difficulties in transportation, installation, and subsequent maintenance, particularly during equipment relocation or production line modifications. Second, monolithic ovens typically have a fixed internal structure, lacking independent adjustment capabilities between drying sections. This makes it difficult to flexibly adjust to the drying characteristics of different coating materials (such as volatilization rate, curing temperature profile, and thermal sensitivity), limiting the equipment's adaptability and process flexibility. Furthermore, due to the limitations of the monolithic structure, any equipment failure or partial repair often requires complete shutdown, impacting production continuity and increasing downtime costs. In order to solve the above problems and improve the flexibility, adaptability, maintainability and production efficiency of the coating oven, it is necessary to optimize and improve the existing coating oven. Therefore, the present invention proposes a segmented coating oven. Summary of the Invention

[0004] In view of the shortcomings of existing coating ovens, such as fixed structure, difficult adjustment, inconvenient maintenance and poor adaptability, the present invention provides a segmented coating oven with adjustable structure, convenient adjustment and easy maintenance.

[0005] To achieve the above object, the technical solution of the present invention is as follows: A segmented coating oven comprises a first chamber, a second chamber, a drying component, a heating component, a fan component, a filter and a thermal insulation board; the first chamber and the second chamber are separated by a thermal insulation board, an air inlet and a return air outlet are provided on the thermal insulation board, and the first chamber and the second chamber realize air circulation through the air inlet and the return air outlet; an exhaust port and an explosion-proof plate are provided on the top of the first chamber, and a feed baffle is provided at the front and back of the first chamber, and a feed port is provided on the feed baffle, wherein the drying component is provided between the two feed ports of the first chamber, and the coating enters the first chamber through the feed port at one end and is transported backward through the feed port at the other end after drying; the air inlet is connected to an air duct, and the other end of the air duct is connected to the drying component; a heating component, a fan component and a filter are provided inside the second chamber, and an air inlet is provided on the top.

[0006] A fan assembly is provided at the air inlet of the second chamber, a heating assembly is provided at the outlet of the fan assembly, and a filter is provided behind the heating assembly. The fan assembly inhales fresh air from the air inlet and blows it toward the heating assembly to form hot air. The hot air enters the drying assembly after being filtered by the filter.

[0007] Furthermore, the drying component includes two relatively arranged air chambers, each air chamber including an air chamber inspection panel, a first stud, a second stud and paired air chamber end plates, an air chamber main board and an air chamber bottom plate, the two air chamber bottom plates are arranged in parallel, and the two sides of the two air chamber end plates are connected by the air chamber main boards to form a rectangular air duct, and the two ends of the rectangular air duct are respectively connected to the air chamber end plates, wherein the air duct is connected to one of the air chamber main boards; the air chamber bottom plates between the two air chambers are also respectively provided with a plurality of air nozzles, and the air nozzles arranged on the two air chamber bottom plates are evenly spaced and staggered; the air chamber main boards corresponding to the two sides of the two air chambers are respectively welded with fixed pull rods, the top of the first chamber is fixedly connected to the second stud, and the bottom of the second stud is connected to the fixed pull rod close to the top air chamber; the first stud is respectively connected to the fixed pull rods of the two air chambers. During the coating and drying process, after the hot air enters the rectangular air duct through the air duct, it forms a uniform and stable air flow curtain through the staggered air nozzles, and performs double-sided impact drying on the coating passing through the two air chambers. At this time, the coating is located in the middle position of the upper and lower air nozzles, and the air nozzles eject hot air to suspend the coating, completing the drying and curing of the adhesive on the coating surface; when maintenance is required, the air chamber access panel can be removed separately to clean the air nozzle or air duct, and the distance between the two air chambers can be fine-tuned through the second stud to adapt to different coating thicknesses. The first stud and the second stud form a three-dimensional support structure to ensure the stability of the air chamber, and the first stud can be adjusted to adjust the distance between the upper and lower air chambers; the air nozzles evenly staggered on the bottom plate of the air chamber can effectively avoid dead corners of air volume, make the hot air distribution more uniform, enhance the drying effect, and improve the uniformity and efficiency of coating drying. The air chamber adopts a modular assembly structure and is fixed by studs and fixed rods. The structure is stable and easy to disassemble and assemble, which is conducive to later maintenance and cleaning.

[0008] Furthermore, the insulation board is provided with an adjustment plate assembly for adjusting the position of the air inlet, the adjustment plate assembly comprising two pairs of sliding rails, sliders, a movable insulation board and an elastic support rod; wherein the two pairs of sliding rails are respectively provided on the insulation board on the upper and lower sides of the movable insulation board, and each pair of sliding rails is symmetrically provided; an air inlet is provided in the middle of the movable insulation board, and sliders cooperating with the sliding rails are provided on the backs of both sides; the elastic support rod comprises a movable rod, a sleeve and a support spring, wherein the movable rod is movably sleeved in the sleeve, the top of the movable insulation board (73) is fixedly connected to the surface, the bottom of the movable insulation board (73) is fixedly connected to the support spring, and the other end of the support spring is fixedly connected to the bottom surface of the sleeve. When the distance between the two air chambers is adjusted, the position of the air inlet is also adjusted accordingly by pulling the air duct, at this time, the slider of the movable insulation board slides along the sliding rail, and the support spring of the elastic support rod automatically compensates for the displacement and supports the movable insulation board. This design facilitates the adjustment of the distance between the two air chambers, and the adjustment process does not require the entire assembly to be disassembled and adjusted, saving labor and being efficient and labor-saving. It is particularly suitable for a multi-variety coating production line with frequent production changes.

[0009] Furthermore, a guide motorized roller rotates below the feed port, and a mounting frame is hingedly mounted on the first chamber above the motorized roller. A pressure roller is rotatably mounted in the center of the mounting frame, and several connecting rods are evenly distributed on the top. The tops of the connecting rods are hinged to the first chamber, and a spring is connected to the middle, with the other end of the spring connected to the first chamber. When coatings of varying thicknesses pass through the feed port, the roller automatically floats up and down with the changing coating thickness. The mounting frame maintains stable pressure through the coordinated action of the connecting rods and springs, ensuring smooth and stable coating delivery without deviation. This solves the problems of wrinkling and stretching caused by traditional rigid guide rollers, facilitates coating drying, and the motorized roller propels the coating in the working direction through its rotation.

[0010] Furthermore, it also includes a fixed rod, the middle of which is connected to the coating to be processed, and guide rods are respectively provided at both ends; the air chamber below the drying component is also evenly provided with transmission rollers; the ends of the transmission roller and the roller are respectively symmetrically provided with guide grooves that cooperate with the guide rods, and the length of the guide rods is greater than the distance between each two guide grooves. When the coating oven is first operated, the traction work of the coating must be completed. Specifically, the head end of the coating to be processed must be connected to the fixed rod, and then the guide rods are placed into the two guide grooves. At this time, the electric roller shaft is turned on, pushing the coating forward, driving the guide rods to move forward along the guide grooves. When the current guide rod is about to leave the current guide groove, the next guide rod has entered the next guide groove, forming a continuous relay guide. After the guide rod passes through the equipment, the staff connects it to the factory's winding mechanism to complete the coating guidance work. This guidance operation does not require worker operation, is efficient and convenient, and can also minimize worker contact with the coating material, improving operational safety.

[0011] Furthermore, an access panel is provided on the main board of the air chamber. The design of the access panel facilitates daily inspection and maintenance of the air chamber, thereby improving the reliability and convenience of operation of the equipment.

[0012] Furthermore, the main frame of the coating oven is welded from a frame square tube, and the frame square tube is provided with fixing ears along the edge. A top insulation board is fixed on the top of the main frame, a bottom insulation board is fixed on the bottom, and a first side insulation board and a second side insulation board are fixed on both sides respectively. The first chamber and the second chamber are separated by an insulation board in the middle, and the insulation boards are provided with through holes. Screw holes are provided at positions corresponding to the fixing ears and the through holes of the insulation boards, and the insulation boards are fixed to the fixing ears by bolts. During assembly, the frame square tube is first welded into the main frame structure, and the screw holes on the fixing ears are aligned with the through holes of each insulation board. The insulation boards include a top insulation board, a bottom insulation board, a first side insulation board and a second side insulation board. After alignment, they are fastened with bolts. The insulation board is also fixed in the middle position of the main frame by bolts to achieve rapid separation of the first chamber and the second chamber. The main frame adopts a modular frame structure with a detachable insulation board design, which is convenient for replacing damaged insulation boards separately during later maintenance. The combination of welded frame and bolt connection not only ensures the overall structural strength, but also avoids the maintenance difficulties caused by traditional fully welded structures.

[0013] Furthermore, the heating assembly includes a heating tube, a heater insulation board, a heater fixing flange and a junction box; the top of the heating tube is connected to the junction box, and the heating wire below the junction box is respectively connected to the heater fixing flange and the heater insulation board; the heater fixing flange is fixedly installed on the top insulation board. Before the equipment is operated, the external power supply and control circuit are connected through the junction box, and the heating tube generates heat after being energized, and the heater insulation board effectively reduces heat loss; when the heating tube needs to be repaired or replaced, the connecting bolts between the heater fixing flange and the top insulation board can be removed, and the entire heating assembly can be taken out from the top down for maintenance; the flange-type mounting structure improves the efficiency of disassembly and assembly of the heating tube, and the explosion-proof design of the top junction box effectively eliminates the risk of electric sparks, which is particularly suitable for the safe production of solvent-based coatings, and the modular heating tube supports independent start and stop, which can realize on-demand heating in different temperature zones in the segmented drying process, which is more energy-efficient and more precise in temperature control.

[0014] Furthermore, the fan assembly includes a centrifugal fan, a fixed flange, a fan insulation board, and a snail blower. The centrifugal fan inlet is connected to the fan insulation board, one end of the fan insulation board is connected to the snail blower, and the other end is fixedly mounted on the outer periphery of the fixed flange. The fixed flange is fixedly mounted on the first side insulation board, and the centrifugal fan is positioned within the second chamber. Hot air is driven by the fan assembly in the second chamber, heated by the heating assembly, and then transported through the air duct to the drying assembly to evenly dry the coating on the surface passing through it. The combined design of the snail blower and centrifugal fan improves air pressure stability. The flange-type mounting structure makes the fan easy to disassemble and maintain. At the same time, the fan insulation board effectively isolates the thermal bridge effect.

[0015] Furthermore, the first chamber is flanked by a second side insulation board, which is provided with two first inspection doors. The return air inlet is provided with a return air plate, and part of the gas in the first chamber flows back into the second chamber through the return air inlet after passing through the return air plate. During operation of the equipment, the operator can quickly check or maintain the operating status of the internal components of the first chamber by opening the two first inspection doors on the second side insulation board. This design facilitates inspection and maintenance. Part of the gas in the first chamber flows back to the second chamber through the return air inlet under the guidance of the return air plate, forming a circulating air path, which improves the utilization rate of the hot air. At the same time, the return air plate helps to even out the airflow, prevent vortexes or uneven air volume, and improve drying uniformity and energy efficiency.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The segmented coating oven of the present invention solves the problems of large size, difficult adjustment and inconvenient maintenance of traditional equipment, and improves the flexibility and adaptability of the equipment; and the chamber can independently adjust the temperature and air volume, improve the drying efficiency and control accuracy, and improve product quality; at the same time, it is easy to transport, install and maintain, reduce the cost of transformation, support local maintenance, reduce downtime, and improve production continuity and equipment utilization.

[0017] 2. The oven provided by the present invention adopts a segmented design. Each section of the oven can be set according to individual parameters, and can independently complete its own drying task to meet diverse production needs. At the same time, the ovens are fixed with bolts. According to actual process requirements, multiple independent oven units can be connected together to form a drying system.

[0018] 3. The present invention sets a return air port between the first chamber and the second chamber, and uses a snail blower to recover part of the air in the first chamber through the return air port, and then heats the air to a suitable temperature through a heater, and then uses it for the drying operation of the next coating. In this way, an air circulation system inside the oven is constructed, which effectively reduces energy consumption and improves energy utilization efficiency.

[0019] 4. The heating assembly and the fan assembly of the present invention both adopt a modular design, which facilitates the installation and disassembly of the heating assembly and the fan assembly, and also facilitates the maintenance and repair of the heating assembly and the fan assembly, thereby improving the efficiency and reliability of the equipment.

[0020] 5. On the drying component described in the present invention, the air nozzles are staggered and evenly spaced, which can keep the forces on the upper and lower sides of the coating balanced, achieve stable suspension of the coating and uniform heating, thereby effectively improving the drying efficiency and ensuring the stability and consistency of the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the internal structure diagrams of the chamber of the present invention.

[0022] Figure 2 This is the second diagram of the internal structure of the chamber of the present invention.

[0023] Figure 3 This is one of the overall structural schematic diagrams of the coating oven of the present invention.

[0024] Figure 4 This is the second schematic diagram of the overall structure of the coating oven of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the interior of the coating oven of the present invention.

[0026] Figure 6 It is a schematic structural diagram of the air valve at the air chamber inlet of the present invention.

[0027] Figure 7 It is a schematic structural diagram of the heating component of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the fan assembly of the present invention.

[0029] Figure 9 It is a schematic diagram of the structure of the movable insulation board of the present invention in coordination with other components.

[0030] Figure 10 It is a schematic structural diagram of the motorized roller shaft, transmission roller and other components of the present invention.

[0031] Figure 11 It is a schematic diagram of the matching structure of the fixing rod and the transmission roller of the present invention.

[0032] Markings in the figure: 1-first chamber, 10-fixing ear, 11-frame square tube, 12-bottom insulation board, 13-first side insulation board, 14-top insulation board, 15-second side insulation board, 16-feeding partition, 18-insulation board, 19-return air port, 2-second chamber, 20-return air plate, 21-air inlet, 22-exhaust outlet, 23-regulating air valve, 24-air valve fixing plate, 25-first inspection door, 26-commutator, 27-explosion-proof plate, 28-second inspection door, 29-feeding port, 3-drying assembly, 31-nozzle, 32-air chamber end plate, 33-air chamber main board, 34-air chamber inspection plate, 35-fixed pull rod, 36-first stud, 37- Second stud, 38-air chamber bottom plate, 4-heating assembly, 41-heating tube, 42-heater insulation board, 43-heater fixing flange, 44-junction box, 5-fan assembly, 51-centrifugal fan, 52-fixing flange, 53-fan insulation board, 54-snail fan, 6-filter, 62-air inlet, 63-air duct, 64-downwind plate, 65-upwind plate, 71-sliding track, 72-slider, 73-movable insulation board, 74-elastic support rod, 81-motorized roller, 82-mounting frame, 83-connecting rod, 84-spring, pressure roller-85, 9-fixing rod, 91-guide rod, 92-transmission roller, 93-guide groove. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Embodiment 1: A segmented coating oven, which mainly includes a first chamber 1, a second chamber 2, a drying component 3, a heating component 4, a fan component 5 and a filter 6. The first chamber 1 and the second chamber 2 are separated by an insulation board 18. The first chamber 1 is a drying box, which is mainly responsible for drying the adhesive on the coating surface. The second chamber 2 is a functional box, which is mainly responsible for air supply, heating and filtering of the entire oven; an air inlet 62 and a return air outlet 19 are provided on the insulation board 18. The hot air from the second chamber 2 enters the first chamber 1 through the air inlet 62. After the coating is dried, part of the air is discharged from the exhaust port 22 at the top of the first chamber 1 for pollution-free treatment, and the other part flows back into the second chamber 2 through the return air outlet 19 for reuse. The first chamber 1 and the second chamber 2 realize air circulation through the air inlet 62 and the return air outlet 19; the drying component 3 is installed in the first chamber 1. Among them, the air nozzle 31 on the drying component 3 is the core component of coating drying. The air nozzle 31 can blow hot air to the coating surface, so that the adhesive on the coating surface can be dried and solidified quickly; the top of the first chamber 1 is provided with an explosion-proof plate 27, which can be quickly opened when an explosion occurs to release the high-pressure gas generated by the explosion, thereby reducing the explosion pressure and preventing the equipment from being more seriously damaged due to overpressure. The first chamber 1 is provided with a feed baffle 16 at the front and back, and a feed port 29 is provided on the feed baffle 16. The coating enters the first chamber 1 through the feed port 29 at one end and is transported backward through the feed port 29 at the other end after drying; the second chamber 2 has an air inlet 21 for capturing and replenishing fresh air in the oven. The heating component 4, fan component 5 and filter 6 are all arranged in the second chamber 2, responsible for transmitting, heating and filtering the air to ensure that the air entering the first chamber reaches the required temperature and cleanliness.

[0035] Directions: First, the coating is fed into the first chamber 1 from the front feed port 29. The fan assembly 5 is started to allow fresh air from the outside to enter the second chamber 2 through the air inlet 21. After being heated by the heating assembly 4 and filtered by the filter 6, clean hot air is formed. The hot air enters the drying assembly 3 through the air inlet 62 and the air duct 63 and is evenly blown onto the coating surface, prompting the adhesive to dry quickly. Part of the exhaust gas is discharged through the exhaust port 22 for treatment, and the other part of the hot air returns to the second chamber 2 through the return air port 19 to be mixed with the newly replenished hot air for recycling. The dried coating is output from the rear feed port 29, completing the entire drying process. When the pressure in the first chamber 1 is abnormal, the explosion-proof plate 27 automatically opens to relieve pressure, ensuring safe operation of the equipment. The explosion-proof plate 27 can quickly open when an explosion occurs, releasing the high-pressure gas generated by the explosion, thereby reducing the explosion pressure and preventing more serious damage to the equipment due to overpressure.

[0036] When a factory needs a long production line, several ovens can be combined, with each two ovens connected by bolts, and the feed openings 29 of the two ovens correspond to each other during the arrangement.

[0037] Example 2: The difference from Example 1 is that the drying component 3 includes two oppositely arranged air chambers, each air chamber includes an air chamber inspection panel 34, a first stud 36, a second stud 37 and a pair of air chamber end plates 32, an air chamber main board 33 and an air chamber bottom plate 38, the two air chamber bottom plates 38 are arranged in parallel, and the two sides of the two air chamber end plates 32 are connected by the air chamber main boards 33 to form a rectangular air duct, and the two ends of the rectangular air duct are respectively connected to the air chamber end plates 32, wherein the air duct 63 is connected to one of the air chamber main boards 33; the air chamber bottom plate 38 between the two air chambers is also respectively provided with a plurality of air nozzles 31, and the air nozzles 31 provided on the two air chamber bottom plates 38 are evenly spaced and staggered; the air chamber main boards 33 corresponding to the two sides of the two air chambers are respectively welded with fixed rods 35, the top of the first chamber 1 is fixedly connected to the second stud 37, and the bottom of the second stud 37 is connected to the fixed rod 35 near the top air chamber; the first stud 36 is respectively connected to the fixed rods 35 of the two air chambers. During the coating and drying process, after the hot air enters the rectangular air duct through the air duct 63, it forms a uniform and stable air flow curtain through the staggered air nozzles 31, and performs double-sided impact drying on the coating passing through the two air chambers. At this time, the coating is located in the middle position of the upper and lower air nozzles 31, and the air nozzles 31 spray out hot air to suspend the coating, completing the drying and curing of the adhesive on the coating surface; when maintenance is required, the air chamber inspection plate 34 can be removed separately to clean the air nozzle 31 or the air duct, and the distance between the two air chambers can be fine-tuned through the second stud 37 to ensure that the coating is dry. To adapt to different coating thicknesses, the first stud 36 and the second stud 37 form a three-dimensional support structure to ensure the stability of the air chamber, and the first stud 36 can be adjusted to adjust the distance between the upper and lower air chambers; the air nozzles 31 evenly and staggeredly arranged on the air chamber bottom plate 38 can effectively avoid dead angles in air volume, make the hot air distribution more even, enhance the drying effect, and improve the uniformity and efficiency of coating drying. The air chamber adopts a modular assembly structure and is connected and fixed by studs and fixed rods 35. The structure is stable and easy to disassemble and assemble, which is conducive to later maintenance and cleaning.

[0038] The main frame of the coating oven is welded from a frame square tube 11, and the frame square tube 11 is provided with fixing ears 10 along the edge. A top insulation board 14 is fixed on the top of the main frame, and a bottom insulation board 12 is fixed on the bottom. A first side insulation board 13 and a second side insulation board 15 are fixed on both sides respectively. The middle is separated into a first chamber 1 and a second chamber 2 by an insulation board 18, wherein the insulation boards are provided with through holes, and screw holes are provided at positions corresponding to the fixing ears 10 and the through holes of the insulation boards, and the insulation boards are fixed to the fixing ears 10 by bolts. During assembly, the frame square tube 11 is first welded into the main frame structure, and the screw holes on the fixing ears 10 are aligned with the through holes of each insulation board. The insulation boards include a top insulation board 14, a bottom insulation board 12, a first side insulation board 13 and a second side insulation board 15. After alignment, they are fastened with bolts. The insulation board 18 is also fixed in the middle position of the main frame by bolts to achieve rapid separation of the first chamber 1 and the second chamber 2; the main frame adopts a modular frame structure with a detachable insulation board design, which is convenient for replacing damaged insulation boards separately during later maintenance. The combination of welded frame and bolt connection not only ensures the overall structural strength, but also avoids the maintenance difficulties caused by the traditional fully welded structure.

[0039] Example 3: The difference from Example 2 is that the insulation board 18 is further provided with an adjustment plate assembly for adjusting the position of the air inlet 21, and the adjustment plate assembly includes two pairs of sliding rails 71, sliders 72, a movable insulation board 73 and an elastic support rod 74; wherein the two pairs of sliding rails 71 are respectively arranged on the insulation board 18 on the upper and lower sides of the movable insulation board 73, and each pair of sliding rails 71 is symmetrically arranged; the air inlet 21 is arranged in the middle of the movable insulation board 73, and sliders cooperating with the sliding rails 71 are also provided on the back of both sides; the elastic support rod 74 includes a movable rod, a sleeve and a support spring, wherein the movable rod is movably sleeved in the sleeve, the top is fixedly connected to the surface of the movable insulation board (73), the bottom is fixedly connected to the support spring, and the other end of the support spring is fixedly connected to the bottom surface of the sleeve. When adjusting the distance between the two air chambers, the position of the air inlet 21 is also adjusted accordingly through the traction of the air duct 63. At this time, the slider 72 of the movable insulation plate 73 slides along the sliding track 71, and the supporting spring of the elastic support rod 74 automatically compensates for the displacement and supports the movable insulation plate 73. This design facilitates the adjustment of the distance between the two air chambers, and there is no need to disassemble and adjust the entire unit during the adjustment process, which saves labor and is efficient and labor-saving. It is particularly suitable for multi-variety coating production lines with frequent production changes.

[0040] A guide motorized roller 81 is rotatably mounted below the feed port 29, and a mounting frame 82 is hingedly mounted on the first chamber 1 above the motorized roller. A pressure roller 85 is rotatably mounted in the middle of the mounting frame 82, and a plurality of connecting rods 83 are evenly distributed on the top. The tops of the connecting rods 83 are hinged to the first chamber 1, and a spring 84 is connected to the middle. The other end of the spring 84 is connected to the first chamber 1. When coatings of varying thicknesses pass through the feed port 29, the roller 82 automatically floats up and down with the changes in coating thickness. The mounting frame 82 maintains stable pressure through the coordinated action of the connecting rods 83 and springs 84, ensuring smooth and stable coating delivery without deviation. This solves problems such as wrinkles and stretching caused by traditional rigid guide rollers and facilitates coating drying. The motorized roller 81 propels the coating in the working direction through its rotation.

[0041] The coating oven also includes a fixed rod 9, which is connected to the coating material to be processed in the middle and has guide rods 91 at both ends. Drive rollers 92 are evenly distributed in the air chamber below the drying assembly 3. The drive rollers 92 and rollers 82 are symmetrically provided with guide grooves 93 at both ends, which match the guide rods 91. The length of the guide rods 91 is greater than the distance between each guide groove 93. When the coating oven is initially operated, the coating material must be pulled in. Specifically, the coating material to be processed must be connected to the fixed rod 9. The guide rods 91 are then placed into the two guide grooves 93. The motorized roller 81 is then turned on, pushing the coating material forward and driving the guide rods 91 forward along the guide grooves 93. As the previous guide rod 91 is about to leave the current guide groove, the next guide rod 91 has already entered the next guide groove, forming a continuous relay-style guide. Once the guide rods 92 have exited the equipment, the operator can connect them to the factory's reeling mechanism to complete the coating guidance process. This guidance operation requires no operator intervention, is efficient and convenient, and minimizes worker contact with the coating material, improving operational safety.

[0042] The air chamber main board 33 is also provided with an access panel 34. The design of the access panel 34 facilitates daily inspection and maintenance of the air chamber, thereby improving the reliability and convenience of operation of the equipment. The inlet of the upper air chamber is rotatably provided with three upper air plates 65, and the inlet of the lower air chamber is rotatably provided with three lower air plates 64. By adjusting the rotation position of the upper air plates 65 and the lower air plates 64, the air chamber inlet can be blocked and the air volume entering the air chamber can be adjusted. It has the same working principle as the air volume regulating valve, and the upper air plates 65 and the lower air plates 64 are respectively connected to a group of commutators 26, and the commutator 26 is used to control the rotation of the upper air plates 65 and the lower air plates 64. The adjustment end of the commutator 26 is set on the air valve fixing plate 24.

[0043] Example 4: Differs from Example 2 in that the heating assembly 4 comprises a heating tube 41, a heater insulation plate 42, a heater fixing flange 43, and a junction box 44. The top of the heating tube 41 is connected to the junction box 44, and the heating wire below the junction box 44 is connected to the heater fixing flange 43 and the heater insulation plate 42, respectively. The heater fixing flange 43 is fixedly mounted on the top insulation plate 14. Before operation, the equipment is connected to an external power supply and control circuit via the junction box 44. When energized, the heating tube 41 generates heat, and the heater insulation plate 42 effectively reduces heat loss. When the heating tube needs to be repaired or replaced, the bolts connecting the heater fixing flange 43 and the top insulation plate 14 can be removed, and the entire heating assembly 4 can be removed from the top for maintenance. The flange-type mounting structure improves the efficiency of assembly and disassembly of the heating tube 41, and the explosion-proof design of the top junction box 44 effectively eliminates the risk of electric sparks, making it particularly suitable for the safe production of solvent-based coatings. The modular heating tube 41 supports independent start and stop, enabling on-demand heating of different temperature zones in the staged drying process, achieving greater energy efficiency and more precise temperature control.

[0044] The fan assembly 5 comprises a centrifugal fan 51, a fixed flange 52, a fan insulation board 53, and a snail fan 54. The centrifugal fan 51's air inlet is connected to the fan insulation board 4. One end of the fan insulation board 53 is connected to the snail fan 54, and the other end is fixedly mounted on the outer periphery of the fixed flange 52. The fixed flange 52 is fixedly mounted on the first side insulation board 13, positioning the centrifugal fan 51 within the second chamber 2. Hot air is driven by the fan assembly 5 within the second chamber 2. After being heated by the heating assembly 4, it is transported through the air duct 63 to the drying assembly 3, uniformly drying the coating on the surface passing through it. The combined design of the snail fan and centrifugal fan improves air pressure stability. The flange-type mounting structure makes the fan easy to disassemble and maintain. At the same time, the fan insulation board 53 effectively isolates the thermal bridge effect.

[0045] The side of the first chamber 1 is a second side insulation board 15, and two first inspection doors 25 are provided on the second side insulation board 15; the return air port 19 is provided with a return air plate 20, and part of the gas in the first chamber 1 passes through the return air plate 20 and flows back into the second chamber 2 through the return air port 19. During the operation of the equipment, the operator can quickly check or maintain the operating status of the internal components of the first chamber 1 by opening the two first inspection doors 25 on the second side insulation board 15. This design facilitates inspection and maintenance; part of the gas in the first chamber 1 flows back to the second chamber through the return air port 19 under the guidance of the return air plate 20, forming a circulating air path, which improves the utilization rate of the hot air. At the same time, the return air plate 20 helps to uniform the airflow, prevent vortexes or uneven air volume, and improve drying uniformity and energy efficiency.

[0046] A damper fixing plate 24 is provided on the top of the second side insulation board 15 , to which an adjusting damper 23 is fixedly connected. The adjusting damper 23 is communicated with the second side insulation board 15 . The adjusting damper 23 is used for adjusting the internal air volume and is easy to use.

[0047] Example 3: The difference from Example 1 is that the coating oven hot air circulation system in this embodiment is composed of a plurality of coating oven units connected in series, and each coating oven unit has the ability to independently adjust parameters such as heating temperature and air volume. In this oven system, at least one coating oven unit is set as a pre-baking section, at least one unit is a drying section, and at least one unit is a cooling section. The pre-baking section is located at the front end of the entire oven system, the drying section is located in the middle of the system, and the cooling section is placed at the end of the system. The operation process of the substrate in the oven system is as follows: first, it passes through the pre-baking section for temperature treatment, and then enters the drying section. The hot air evaporates the moisture in the adhesive. After the adhesive is dried and solidified, it enters the cooling section for cooling. Finally, it is output from the oven and compounded with another film material to form a new roll film.

[0048] Each section of the coating oven is equipped with a heating component 4. The heating body of the heating component 4 adopts a heating tube 41. When the snail blower 54 blows air to the heating component 4, the air is heated by the heating tube 41 and converted into hot air. According to the temperature requirements of each oven section, the oven system can provide hot air at different temperatures, which are mainly divided into three temperatures, corresponding to the pre-baking section, the drying section and the cooling section. Among them, the hot air temperature of the pre-baking section is 130 degrees Celsius, the hot air temperature of the drying section is 160 degrees Celsius, and the hot air temperature of the cooling section is 20 degrees Celsius.

[0049] After the substrate is dried in the first chamber 1, some of the gas within the chamber is discharged through exhaust port 22 and sent to the exhaust gas treatment system, where a catalyst decomposes hydrocarbons in the exhaust gas to prevent environmental pollution. During the drying process, some of the gas within the chamber flows back to the second chamber 2 through the return air port 19. Together with the fresh air introduced through the air inlet 21, it flows to the heating assembly 4, achieving secondary recycling of the gas. The concentration of harmful substances in the chamber during the preheating and drying stages is relatively high, so the exhaust volume in these two stages needs to be greater than the return air volume.

[0050] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A segmented coating oven, characterized in that: The invention comprises a first chamber (1), a second chamber (2), a drying component (3), a heating component (4), a fan component (5), a filter (6) and a thermal insulation board (18); the first chamber (1) and the second chamber (2) are separated by the thermal insulation board (18); the thermal insulation board (18) is provided with an air inlet (62) and an air return port (19); the first chamber (1) and the second chamber (2) realize air circulation through the air inlet (62) and the air return port (19); the top of the first chamber (1) is provided with an air outlet (22) and an explosion-proof plate (27); the front of the first chamber (1) is provided with an air outlet (22) and an explosion-proof plate (27); A feeding partition (16) is provided at the back, and a feeding port (29) is provided on the feeding partition (16). The drying component (3) is provided between the two feeding ports (29) of the first chamber (1). The coating enters the first chamber (1) through the feeding port (29) at one end, and is transported backward through the feeding port (29) at the other end after drying. The air inlet is connected to the air duct (63), and the other end of the air duct (63) is connected to the drying component (3). The second chamber (2) is provided with a heating component (4), a fan component (5) and a filter (6), and an air inlet (21) is provided on the top.

2. A segmented coating oven according to claim 1, characterized in that: The drying assembly (3) includes two air chambers arranged opposite to each other, each air chamber including an air chamber inspection plate (34), a first stud (36), a second stud (37) and a pair of air chamber end plates (32), an air chamber main plate (33) and an air chamber bottom plate (38), the two air chamber bottom plates (38) are arranged in parallel, and the two sides of the two air chamber end plates (32) are connected to form a rectangular air duct through the air chamber main plate (33), and the two ends of the rectangular air duct are connected to the air chamber end plates (32), wherein the air duct (63) is connected to one of the air chamber main plates (3 3) connected; the air chamber bottom plate (38) between the two air chambers is also provided with a plurality of air nozzles (31), and the air nozzles (31) provided on the two air chamber bottom plates (38) are evenly spaced and staggered; the air chamber main plates (33) corresponding to the two air chambers on both sides are respectively welded with fixed rods (35), the top of the first chamber (1) is fixedly connected to the second stud (37), and the bottom of the second stud (37) is connected to the fixed rod (35) close to the top air chamber; the first stud (36) is respectively connected to the fixed rods (35) of the two air chambers.

3. A segmented coating oven according to claim 2, characterized in that: The insulation board (18) is also provided with an adjustment plate assembly for adjusting the position of the air inlet (21), and the adjustment plate assembly includes two pairs of sliding rails (71), a slider (72), a movable insulation board (73) and an elastic support rod (74); wherein the two pairs of sliding rails (71) are respectively provided on the insulation board (18) on the upper and lower sides of the movable insulation board (73), and each pair of sliding rails (71) is symmetrically arranged; an air inlet (21) is provided in the middle of the movable insulation board (73), and sliders cooperating with the sliding rails (71) are provided on the back sides of both sides; the elastic support rod (74) includes a movable rod, a sleeve and a support spring, wherein the movable rod is movably sleeved in the sleeve, the top of the movable insulation board (73) is fixedly connected to the surface, the bottom of the movable insulation board (73) is fixedly connected to the support spring, and the other end of the support spring is fixedly connected to the bottom surface of the sleeve.

4. The segmented coating oven according to claim 2, wherein: A guide motorized roller (81) is rotatably provided below the feed port (29), and a mounting frame (82) is hingedly connected to the first chamber (1) above the motorized roller; a pressure roller (85) is rotatably installed in the middle of the mounting frame (82), and a plurality of connecting rods (83) are evenly provided on the top. The top of the connecting rod (83) is hingedly connected to the first chamber (1), and a spring (84) is connected to the middle, and the other end of the spring (84) is connected to the first chamber (1).

5. The segmented coating oven according to claim 1, characterized in that: The drying assembly (3) further comprises a fixing rod (9), the middle of which is connected to the coating to be processed, and guide rods (91) are respectively provided at both ends; the air chamber below the drying assembly (3) is also evenly provided with transmission rollers (92); the transmission rollers (92) and the rollers (82) are respectively symmetrically provided with guide grooves (93) that cooperate with the guide rods (91), and the length of the guide rods (91) is greater than the distance between each two guide grooves (93).

6. The segmented coating oven according to claim 1, characterized in that: An inspection plate (34) is also provided on the air chamber main plate (33).

7. The segmented coating oven according to claim 1, characterized in that: The main frame of the coating oven is formed by welding a frame square tube (11), and the frame square tube (11) is provided with a fixing ear (10) along the edge. A top insulation board (14) is fixed on the top of the main frame, and a bottom insulation board (12) is fixed on the bottom. A first side insulation board (13) and a second side insulation board (15) are fixed on both sides respectively. A first chamber (1) and a second chamber (2) are separated in the middle by an insulation board (18), wherein the insulation boards are provided with through holes, and screw holes are provided at positions corresponding to the fixing ears (10) and the through holes of the insulation boards, and the insulation boards are fixed to the fixing ears (10) by bolts.

8. The segmented coating oven according to claim 7, characterized in that: The heating assembly (4) includes a heating tube (41), a heater insulation board (42), a heater fixing flange (43) and a junction box (44); the top of the heating tube (41) is connected to the junction box (44), and the heating wire below the junction box (44) is connected to the heater fixing flange (43) and the heater insulation board (42) respectively; the heater fixing flange (43) is fixedly mounted on the top insulation board (14).

9. The segmented coating oven according to claim 7, characterized in that: The fan assembly (5) comprises a centrifugal fan (51), a fixed flange (52), a fan insulation board (53) and a snail fan (54); an air inlet of the centrifugal fan (51) is connected to the fan insulation board (4); one end of the fan insulation board (53) is connected to the snail fan (54), and a fixed flange (52) is fixedly mounted on the outer periphery of the other end; the fixed flange (52) is fixedly arranged on the first side insulation board (13), and the centrifugal fan (51) is arranged inside the second chamber (2).

10. A segmented coating oven according to any one of claims 7 to 9, characterized in that: The side of the first chamber (1) is a second side insulation board (15), and the second side insulation board (15) is provided with two first inspection doors (25); the return air port (19) is provided with a return air plate (20), and part of the gas in the first chamber (1) passes through the return air plate (20) and flows back into the second chamber (2) through the return air port (19).

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