A drying heating mechanism for a coating production line

Abstract

The utility model discloses a kind of coating production line drying heating mechanisms, including by spray booth and drying oven double-cabin bridge type drying furnace, the inside of the drying oven is equipped with preheating cabin and curing cabin, airflow drying assembly is installed in the inside of the preheating cabin and the curing cabin, the utility model relates to automobile parts processing equipment technical field;The coating production line drying heating mechanism, when airflow drying is carried out to automobile parts, the direction of airflow spray head injection can be automatically adjusted according to the height of airflow spray head inside drying oven movement, the initial position of airflow injection inside airflow spray head and the bottom of drying oven are parallel state, the paint sprayed on the surface of automobile parts is heated and dried by airflow injection at this time, when airflow spray head drops to certain height, not complete gear and rack are contacted, so that airflow spray head rotates, so that the airflow injection is inclined, and the airflow of inclination can heat and dry the bottom surface and camber surface of automobile parts.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing equipment technology, specifically a drying and heating mechanism for a coating production line. Background Technology

[0002] During the production of automotive parts, paint needs to be sprayed onto their surfaces. This paint serves to prevent corrosion, resist aging, and enhance the impact resistance of the parts. After the paint is applied to the automotive parts via the coating production line, the liquid paint on the exterior of the parts needs to be cured. The paint and hardener undergo a chemical reaction at a specific temperature, causing the paint powder chains to interconnect and forming a dense, robust three-dimensional network structure on the exterior of the parts. Existing automotive parts processing equipment integrates the coating and drying production lines into a single integrated processing unit, such as a dual-chamber bridge drying oven. This integrated processing equipment also incorporates three sets of air curtain machines inside the drying chamber, using airflow to create two chambers within the drying chamber and employing high-temperature airflow to dry and heat the paint sprayed onto the exterior of the automotive parts.

[0003] Most airflow nozzles installed inside the drying chamber are fixed, while some movable airflow nozzles can only move vertically inside the drying chamber. The airflow direction of the nozzles is fixed. For some irregularly shaped automotive parts, there are slots on the bottom of the parts. The fixed airflow direction can easily create spray dead zones, preventing the airflow from hitting the bottom of the irregularly shaped automotive parts or the slots. This slows down the drying speed of the paint in those areas. At the same time, the temperature inside the drying chamber is high, making it inconvenient to install an electric drive source to adjust the angle of the airflow nozzles.

[0004] To address these issues, this invention provides a drying and heating mechanism for a coating production line. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a drying and heating mechanism for a coating production line, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a drying and heating mechanism for a coating production line, comprising a double-chamber bridge-type drying oven consisting of a spray box and a drying box, wherein a suspension frame is installed between the spray box and the drying box, and the interior of the drying box is provided with a preheating chamber and a curing chamber, wherein airflow drying components are installed inside both the preheating chamber and the curing chamber; The airflow drying assembly includes guide rails symmetrically and fixedly connected to the inner wall of the drying chamber. A slide plate is slidably connected to the outer side of the guide rails. A connecting rod is rotatably connected to the inside of the slide plate. A mounting base is fixedly connected to the outer side of the connecting rod. An airflow nozzle is fixedly connected to the outer side of the mounting base. The airflow drying assembly also includes incomplete gears symmetrically fixedly connected to the outside of the connecting rod, a support rod fixedly connected to the bottom side of the guide rail, and a toothed rod fixedly connected to the outside of the support rod. A duct is fixedly connected to the outside of the airflow nozzle, a drive assembly is installed on the top of the drying chamber, and a flow guide assembly is installed on the outside of the drying chamber.

[0007] Preferably, a retaining plate is fixedly connected to the inner wall of the skateboard.

[0008] Preferably, a torsion spring is fixedly connected between the outer side of the connecting rod and the inner wall of the slide plate.

[0009] Preferably, the drive assembly includes a cavity connecting shell fixedly connected to the top of the drying chamber, sprockets symmetrically rotatably connected inside the cavity connecting shell, a chain installed between the two sprockets, a servo motor fixedly connected to the top of the cavity connecting shell, the output end of the servo motor fixedly connected to one of the sprockets, a lead screw fixedly connected to the bottom of the sprocket, a threaded sleeve threadedly connected to the outer side of the lead screw, and a connecting rod fixedly connected between the threaded sleeve and the slide plate.

[0010] Preferably, the flow guiding assembly includes a heating fan and a circulating pump fixedly connected to the outside of the drying chamber, filter box A and filter box B are symmetrically fixedly connected to the top of the drying chamber, a suction pipe is fixedly connected between the output end of filter box A and the circulating pump, and a discharge pipe is fixedly connected between the circulating pump and the drying chamber.

[0011] Preferably, a pull-out plate is installed on the outer side of the filter box A and the filter box B, and a filter plate is fixedly connected to the inner wall of the pull-out plate. A plurality of filter plates are provided, and filter cotton is installed inside the filter plates.

[0012] Beneficial effects This utility model provides a drying and heating mechanism for a coating production line. Compared with the prior art, it has the following advantages: The drying and heating mechanism of this coating production line automatically adjusts the direction of the airflow nozzles during airflow drying of automotive parts based on the height of the nozzles within the drying chamber. The initial position of the airflow inside the nozzles is parallel to the bottom of the drying chamber. At this point, the airflow heats and dries the paint applied to the outer surface of the automotive parts. When the nozzles descend to a certain height, the incomplete gear and the rack engage, causing the nozzles to rotate and tilt the airflow. This tilted airflow heats and dries the bottom surface of the automotive parts. Simultaneously, the tilted airflow can also blow onto the curved surfaces of irregularly shaped automotive parts, improving the heating and drying effect of the paint on the outer surface of various shaped automotive parts. Attached Figure Description

[0013] Figure 1 This is a perspective view of the external structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the drying oven of this utility model; Figure 3 This is a partial structural schematic diagram of the airflow drying component of this utility model; Figure 4 This is the utility model Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 This is the utility model Figure 3 Enlarged structural diagram at point B in the diagram; Figure 6 This is a schematic diagram of the connection structure between the guide rail and the slide plate of this utility model; Figure 7 This is a schematic diagram of the connection structure between the sprocket and the chain of this utility model; Figure 8 This is a schematic diagram of the connection structure between the pull-out plate and the filter plate of this utility model.

[0014] In the diagram: 1. Spraying box; 2. Drying box; 3. Suspension frame; 4. Preheating chamber; 5. Curing chamber; 6. Airflow drying assembly; 601. Guide rail; 602. Slide plate; 603. Connecting rod; 604. Mounting base; 605. Airflow nozzle; 606. Incomplete gear; 607. Support rod; 608. Toothed rod; 7. Conduit; 8. Drive assembly; 801. Cavity connecting shell; 802. Sprocket; 803. Chain; 804. Servo motor; 805. Lead screw; 806. Threaded sleeve; 807. Connecting rod; 9. Flow guiding assembly; 901. Heating fan; 902. Circulating pump; 903. Filter box A; 904. Filter box B; 905. Pull-out pipe; 906. Pipe arrangement; 10. Clamping plate; 11. Torsion spring; 12. Pull-out plate; 13. Filter plate; 14. Filter cotton. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please see Figure 1-7A drying and heating mechanism for a coating production line includes a double-chamber bridge-type drying oven consisting of a spray box 1 and a drying box 2. A suspension frame 3 is installed between the spray box 1 and the drying box 2. The interior of the drying box 2 is provided with a preheating chamber 4 and a curing chamber 5. Both the preheating chamber 4 and the curing chamber 5 are equipped with airflow drying components 6. The airflow drying assembly 6 includes guide rails 601 symmetrically fixed to the inner wall of the drying chamber 2. Each guide rail 601 has two rails. A sliding plate 602 is slidably connected to the outer side of the two guide rails 601. A connecting rod 603 is rotatably connected to the inner side of the sliding plate 602. A mounting base 604 is fixedly connected to the outer side of the connecting rod 603. An airflow nozzle 605 is fixedly connected to the outer side of the mounting base 604. The airflow drying assembly 6 also includes an incomplete gear 606 symmetrically fixedly connected to the outside of the connecting rod 603. A support rod 607 is fixedly connected to the bottom side of the guide rail 601. A rack 608 is fixedly connected to the outside of the support rod 607. The rack 608 and the guide rail 601 are arranged in parallel. The incomplete gear 606 and the rack 608 are in corresponding positions. After the incomplete gear 606 moves down to a specific height, it meshes with the rack 608. A duct 7 is fixedly connected to the outside of the airflow nozzle 605, and a drive assembly 8 is installed on the top of the drying chamber 2.

[0017] The inner wall of the skateboard 602 is fixedly connected to a card plate 10, and the top of the card plate 10 is provided with an arc-shaped groove.

[0018] A torsion spring 11 is fixedly connected between the outer side of the connecting rod 603 and the inner wall of the slide plate 602.

[0019] In this embodiment, during the processing of automotive parts, the suspension bracket 3 carries the automotive parts into the spraying box 1. After the automotive parts are coated, the suspension bracket 3 carries them into the drying box 2. At this time, the automotive parts first enter the preheating chamber 4. The temperature inside the preheating chamber 4 is low to prevent the automotive parts after painting from suddenly entering a high-temperature environment, which would cause the surface solvent to boil instantly and break through the initially formed paint film, forming pinholes, bubbles, or orange peel. The preheated automotive parts then enter the curing chamber 5, which also shortens the overall heating cycle of the automotive parts. After painting, the automotive parts enter the preheating chamber 4 and the curing chamber 5. The slide plate 602 moves vertically on the outside of the guide rail 601. When the slide plate 602 is at a high position inside the drying box 2, the airflow nozzle 605 and the bottom of the drying box 2 are parallel. At this time, the airflow is sprayed horizontally to dry the paint on the outer surface of the automotive parts. When the slide plate 602 descends to a specific height, the connecting rod 603 is not completely fixed on both sides. The gear 606 and the rack 608 on the outside of the support rod 607 mesh and drive each other. At this time, the connecting rod 603 drives the airflow nozzle 605 mounted on the mounting base 604 to rotate at a specific angle inside the slide plate 602, so that the airflow is sprayed upward at an angle. The angled airflow can spray onto the bottom surface of the car parts and the arc surface or groove of the car parts, improving the drying effect of the paint on the surface of the car parts and preventing the airflow sprayed in a fixed direction from forming dead corners, which would cause uneven drying of the paint on the outer surface of the car parts. When the slide plate 602 is raised, the rack 608 drives the airflow nozzle 605 to rotate and reset, and with the help of the torsion spring 11 and the clamping plate 10, the airflow nozzle 605 is set horizontally again. At the same time, the torque generated by the torsion spring 11 prevents the airflow generated by the duct 7 from causing the airflow nozzle 605 to swing irregularly, which would affect the airflow drying effect. Both the rack 608 and the incomplete gear 606 can be coated with Teflon to reduce paint mist adhesion. During maintenance, the torsion spring 11 should be replaced regularly.

[0020] The drive assembly 8 includes a cavity connecting shell 801 fixedly connected to the top of the drying chamber 2. Sprockets 802 are symmetrically rotatably connected inside the cavity connecting shell 801. A chain 803 is installed between the two sprockets 802. A servo motor 804 is fixedly connected to the top of the cavity connecting shell 801. The output end of the servo motor 804 is fixedly connected to one of the sprockets 802. A lead screw 805 is fixedly connected to the bottom of the sprocket 802. The lead screw 805 is installed inside the drying chamber 2. A threaded sleeve 806 is threadedly connected to the outside of the lead screw 805. A connecting rod 807 is fixedly connected between the threaded sleeve 806 and the slide plate 602.

[0021] In this embodiment, during the process of airflow being ejected from the airflow nozzle 605, the servo motor 804 drives the sprocket 802 fixed at its output end to rotate inside the cavity connecting shell 801. At this time, the chain 803 drives another sprocket 802 to rotate, thereby causing the lead screw 805 fixed at the bottom of the sprocket 802 to rotate simultaneously inside the drying chamber 2. The rotating lead screw 805 drives the threaded sleeve 806 to move outside the lead screw 805. At this time, the moving threaded sleeve 806 drives the slide plate 602 connected to the connecting rod 807 to move vertically outside the guide rail 601.

[0022] Example 2: Please see Figure 1 and Figure 8 This embodiment provides a technical solution for a drying and heating mechanism in a coating production line, based on Embodiment 1: A flow guiding component 9 is installed on the outside of the drying chamber 2. The flow guiding component 9 includes a heating fan 901 and a circulation pump 902 fixedly connected to the outside of the drying chamber 2. The outlet end of the heating fan 901 is connected to a conduit 7 installed inside the curing chamber 5. Filter boxes A903 and B904 are symmetrically fixedly connected to the top of the drying chamber 2. Filter box A903 is connected to the preheating chamber 4, and filter box B904 is connected to the curing chamber 5. A suction pipe 905 is fixedly connected between the output end of filter box A903 and the circulation pump 902. A drain pipe 906 is fixedly connected between the circulation pump 902 and the drying chamber 2. The tail end of the drain pipe 906 is connected to the conduit 7 installed inside the preheating chamber 4.

[0023] In this embodiment, during the airflow drying process of automotive parts, the heating fan 901 heats the outside air to a certain temperature and then injects it into the curing chamber 5 through the duct 7. At the same time, the circulating pump 902 filters the hot airflow inside the curing chamber 5 through the filter box A903 and then injects it into the preheating chamber 4 through the duct 7 connected by the extraction pipe 905. The temperature of the circulating airflow decreases, preheating the automotive parts. Meanwhile, the hot airflow is filtered through the filter box B904 and then discharged, recovering and reusing the heat of the airflow in the curing chamber 5, thus achieving an energy-saving effect.

[0024] Pull-out plates 12 are installed on the outside of filter boxes A903 and B904. Filter plates 13 are fixedly connected to the inner wall of the pull-out plates 12. Several filter plates 13 are provided, and filter cotton 14 is installed inside the filter plates 13.

[0025] In this embodiment, the paint on the outer surface of the automotive parts will generate paint mist after heating. Paint mist has a strong polluting effect on the environment. After passing through filter box A903 and filter box B904, the paint mist is filtered in multiple stages by the filter cotton 14 inside the multiple filter plates 13, so that the gas discharged from the output end of filter box B904 is relatively clean and air pollution is reduced.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying and heating mechanism for a coating production line, comprising a double-chamber bridge-type drying oven consisting of a spraying box (1) and a drying box (2), characterized in that: A suspension frame (3) is installed between the spray box (1) and the drying box (2). The drying box (2) is equipped with a preheating chamber (4) and a curing chamber (5). Both the preheating chamber (4) and the curing chamber (5) are equipped with airflow drying components (6). The airflow drying assembly (6) includes guide rails (601) symmetrically fixedly connected to the inner wall of the drying chamber (2), a sliding plate (602) slidably connected to the outer side of the guide rails (601), a connecting rod (603) rotatably connected to the inside of the sliding plate (602), a mounting base (604) fixedly connected to the outer side of the connecting rod (603), and an airflow nozzle (605) fixedly connected to the outer side of the mounting base (604). The airflow drying assembly (6) also includes an incomplete gear (606) symmetrically fixedly connected to the outside of the connecting rod (603), a support rod (607) fixedly connected to the bottom side of the guide rail (601), and a toothed rod (608) fixedly connected to the outside of the support rod (607). A duct (7) is fixedly connected to the outside of the airflow nozzle (605), a drive assembly (8) is installed on the top of the drying box (2), and a flow guide assembly (9) is installed on the outside of the drying box (2).

2. The drying and heating mechanism for a coating production line according to claim 1, characterized in that: The inner wall of the skateboard (602) is fixedly connected to a card plate (10).

3. The drying and heating mechanism for a coating production line according to claim 1, characterized in that: A torsion spring (11) is fixedly connected between the outer side of the connecting rod (603) and the inner wall of the sliding plate (602).

4. The drying and heating mechanism for a coating production line according to claim 1, characterized in that: The drive assembly (8) includes a cavity connecting shell (801) fixedly connected to the top of the drying box (2). Sprockets (802) are symmetrically rotatably connected inside the cavity connecting shell (801). A chain (803) is installed between the two sprockets (802). A servo motor (804) is fixedly connected to the top of the cavity connecting shell (801). The output end of the servo motor (804) is fixedly connected to one of the sprockets (802). A lead screw (805) is fixedly connected to the bottom of the sprocket (802). A threaded sleeve (806) is threadedly connected to the outside of the lead screw (805). A connecting rod (807) is fixedly connected between the threaded sleeve (806) and the slide plate (602).

5. The drying and heating mechanism for a coating production line according to claim 1, characterized in that: The flow guiding component (9) includes a heating fan (901) and a circulation pump (902) fixedly connected to the outside of the drying box (2). Filter box A (903) and filter box B (904) are symmetrically fixedly connected to the top of the drying box (2). A suction pipe (905) is fixedly connected between the output end of the filter box A (903) and the circulation pump (902). A drain pipe (906) is fixedly connected between the circulation pump (902) and the drying box (2).

6. The drying and heating mechanism for a coating production line according to claim 5, characterized in that: A pull-out plate (12) is installed on the outside of the filter box A (903) and the filter box B (904). A filter plate (13) is fixedly connected to the inner wall of the pull-out plate (12). The filter plate (13) is provided with a plurality of filters, and filter cotton (14) is installed inside the filter plate (13).

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