A thermosetting powder coating spraying equipment

Abstract

This invention relates to the field of powder coating technology and discloses a thermosetting powder coating spraying device, including a frame and a plate. A conveying module is provided between the inner walls of both sides of the frame to move the plate in a circular motion. A suspension module for fixing the plate is provided on the conveying module. Multiple spraying modules for uniformly spraying the plate are provided on the inner wall of the bottom of the frame, and these spraying modules are arranged in a circular pattern with the sprayed powder coating directed towards the center of their circle. A recovery module for absorbing excess powder coating is provided at the bottom of the frame, below the suspension modules. This invention not only enables the plate to move in a circular motion but also rotates the plate during the movement, allowing for uninterrupted plate conveying during spraying and improving spraying efficiency. Furthermore, it keeps the plate grounded, improving powder adsorption efficiency.

Description

Technical Field

[0001] This invention relates to the field of powder coating technology, specifically to a thermosetting powder coating spraying equipment. Background Technology

[0002] Thermosetting powder coatings are hard coatings formed by adding a curing agent to thermosetting resin as the film-forming substance and then heating it to undergo a cross-linking reaction. They have excellent corrosion resistance, mechanical strength, and decorative properties.

[0003] A search revealed Chinese patent CN210146333U, which discloses an adjustable thermosetting powder coating spraying device for preventing clogging. This device allows for multi-angle adjustable spraying, employs multiple diverter pipes for application, and then uses a drying mechanism for encapsulated drying, achieving adjustable, clogging-resistant spraying. However, it still has the following problems:

[0004] 1. Its angle adjustment is completed before the workpiece is sprayed. When spraying plate-type workpieces, it can only spray the front and back sides of the workpiece. The left and right sides of the workpiece cannot be sprayed and a second spraying is required to complete the workpiece spraying, which limits its use.

[0005] 2. The two sets of nozzles spray the workpiece in a counter-spraying manner. After spraying, the powder sprayed by the other set of nozzles is easily adsorbed by each other. After long-term use, powder is easy to accumulate on the nozzles, which will cause the nozzles to become clogged.

[0006] 3. During the powder coating process, the conveyor belt needs to be stopped before the workpiece can be coated, resulting in low coating efficiency. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a thermosetting powder coating spraying device. The main purpose is to solve the problems of being able to spray only the front and back sides of a workpiece, while the left and right sides cannot be sprayed, requiring secondary spraying to complete the workpiece coating, thus limiting its use. Furthermore, the use of a counter-spraying method for workpiece coating results in powder adsorption between the two sets of nozzles after spraying, leading to powder accumulation and clogging over time. Additionally, the need to stop the conveyor belt during powder spraying ensures low coating efficiency.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A thermosetting powder coating spraying device includes a frame and a plate. A conveying module is provided between the inner walls of both sides of the frame to move the plate in a circular motion. A suspension module is provided on the conveying module to fix the plate. Multiple spraying modules are provided on the bottom inner wall of the frame to uniformly spray the plate. The multiple spraying modules are arranged in a circle, and the powder coating they spray is directed toward the center of the circle. A contact component for controlling the spraying of powder coating is provided on one side of the multiple spraying modules. A recovery module for absorbing excess powder coating is provided at the bottom of the frame below the suspension module. A partition is provided behind the powder coating sprayed by the spraying modules and welded to the bottom inner wall of the frame.

[0010] Furthermore, the conveying module includes a rotating shaft that rotates between the bottom and top of the frame. A sprocket is keyed to the top of the outer circumference of the rotating shaft. A conveying chain meshes with and connects to the outside of the sprocket on its outer circumference. An annular guide rail is fixed to the inner top wall of the frame by bolts.

[0011] Based on the aforementioned solution, the suspension module includes a hanger that slides on the inner wall of the bottom of the guide rail. A connecting frame is slidably connected to the bottom of the hanger through a conveyor chain. The connecting frame and the hanger are connected by a lifting component. The bottom of the connecting frame is provided with a clamping component for fixing the plate. The bottom of the guide rail is provided with a transmission component for driving the plate to rotate.

[0012] As a further embodiment of the present invention, the lifting assembly includes a spring fixed to the bottom of the hanger, a connecting ring fixed to the top of the spring and sleeved on the outer circumference of the hanger, and the connecting ring is rotatably connected to the connecting frame, and a rubber pad is bonded to the contact surface between the connecting frame and the conveyor chain.

[0013] Furthermore, the clamping assembly includes two threaded holes at the bottom of the connecting frame, with a semi-threaded bolt threaded into the threaded hole. The unthreaded part of the semi-threaded bolt is fitted with a limiting block. The bottom of the connecting frame is provided with two clamps, and the bottom of the clamps is provided with a through groove. The limiting block slides in the groove, and the semi-threaded bolt can contact the clamp.

[0014] Based on the aforementioned scheme, the transmission assembly includes a gear and a turntable that are keyed to the outer circumference of the connecting frame, and the gear is fixed to the turntable. The bottom of the guide rail is fixed with a limit frame by bolts, and the connecting frame is located inside the limit frame. An extrusion frame is welded to the bottom of the limit frame. Multiple tooth blocks are integrally formed on the inner circumference of the extrusion frame, and the tooth blocks can mesh with the gear. Multiple rolling grooves are opened on the top of the turntable, and first balls roll in the rolling grooves, and the first balls can contact the extrusion frame.

[0015] As a further embodiment of the present invention, the spraying module includes a mounting bracket welded to the bottom of the frame and a fixing bracket welded to the inner walls of multiple sides of the frame. The bottom of the fixing bracket is rotatably connected to a rotating bracket via a bearing. A spray head is fixed to one side of the rotating bracket via a thread. A corrugated pipe connected to the spray head is fixed between the mounting bracket and the rotating bracket via a clamp. A first external pipe connected to the corrugated pipe and an external feeding pipe is fixed to one side of the mounting bracket via a thread.

[0016] Furthermore, the contact assembly includes a fixing rod fixed to the outer circumference of the rotating frame, and the fixing rod is in contact with the turntable. The bottom of the fixing frame is fixed with a torsion spring that is fixed to the rotating frame by bolts. The bottom of the fixing frame is welded with multiple stops that are in contact with the fixing rod. One side of the fixing frame is fixed with a touch switch by bolts. One side of the fixing rod is welded with an arc-shaped protrusion that is in contact with the touch switch.

[0017] Based on the aforementioned scheme, the recycling module includes a flow guide frame fixed to the bottom of the frame, a second external pipe welded to the bottom of the flow guide frame and fixed to an external vacuum cleaner, and a cleaning module for scraping the partition is provided on the outer circumference of the rotating shaft.

[0018] As a further embodiment of the present invention, the cleaning module includes two guide grooves formed on the outer circumference of the rotating shaft, and the two guide grooves can form a complete reciprocating motion groove. A slip ring is sleeved on the outer circumference of the rotating shaft. A limiting groove is formed on one side of the inner wall of the slip ring. A second ball is rolled in the limiting groove and is located in the guide groove. A scraper is welded to one side of the outer wall of the slip ring and the scraper is in contact with the partition. A collection box is provided between the partition and the frame and is fixed to the partition. A baffle is welded to the top of the outer circumference of the partition.

[0019] Compared with the prior art, the present invention provides a thermosetting powder coating spraying device, which has the following beneficial effects:

[0020] 1. This invention, through the coordinated use of multiple modules, can not only drive the sheet material to move in a ring, but also make the sheet material rotate during the movement. This allows the sheet material to be transported without stopping during the spraying process, improving the spraying efficiency of the sheet material. It can also keep the sheet material grounded, improving the powder adsorption efficiency.

[0021] 2. By incorporating a lifting component, this invention increases the friction between the connecting frame and the conveyor chain, fixing the connecting frame when the sheet is not being sprayed. This reduces dust falling from the sprayed sheet during transfer, thereby improving the spraying quality of the equipment.

[0022] 3. The present invention, by incorporating a transmission component, enables the sheet material to rotate while moving in a ring, allowing for spraying on multiple sides and improving the coverage of the sheet material spraying.

[0023] 4. By incorporating multiple spraying modules, this invention enables spraying of rotating plates at various angles, avoiding spraying dead zones and further improving the spraying quality of the equipment.

[0024] 5. By incorporating a contact component, this invention can expand the spraying range of the nozzle, thereby increasing the contact time between the powder coating sprayed from the nozzle and the substrate, thus achieving uniform powder coating and further improving the coating quality of the equipment. At the same time, it can also perform intermittent spraying, saving equipment resource consumption.

[0025] 6. This invention, by incorporating a recycling module, controls the dust concentration inside the frame, ensuring that the internal dust concentration remains relatively stable, thus avoiding the risk of dust explosion and improving the safety of the equipment.

[0026] 7. This invention features a cleaning module with a scraper that moves up and down to scrape and clean the side of the partition facing the board, preventing powder coating from accumulating and thickening over time, which could affect the rotation of the board and improve the cleaning effect and operational stability of the equipment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the front three-dimensional structure of a thermosetting powder coating spraying equipment proposed in this invention;

[0028] Figure 2 This is a schematic diagram of the rear three-dimensional structure of a thermosetting powder coating spraying equipment proposed in this invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of a thermosetting powder coating spraying equipment proposed in this invention;

[0030] Figure 4 This is an enlarged structural schematic diagram of the conveying module of a thermosetting powder coating spraying equipment proposed in this invention;

[0031] Figure 5 This invention provides a thermosetting powder coating spraying device. Figure 4 A partially enlarged structural diagram;

[0032] Figure 6 This is an enlarged structural schematic diagram of the suspension module of a thermosetting powder coating spraying equipment proposed in this invention;

[0033] Figure 7 This is a cross-sectional view of the suspension module structure of a thermosetting powder coating spraying equipment proposed in this invention.

[0034] Figure 8 This invention provides a thermosetting powder coating spraying device. Figure 7A partially enlarged structural diagram;

[0035] Figure 9 This is an enlarged structural schematic diagram of the spraying module of a thermosetting powder coating spraying equipment proposed in this invention;

[0036] Figure 10 This invention provides a thermosetting powder coating spraying device. Figure 9 A partially enlarged structural diagram;

[0037] Figure 11 This is an enlarged structural schematic diagram of the recycling module of a thermosetting powder coating spraying equipment proposed in this invention;

[0038] Figure 12 This invention provides a thermosetting powder coating spraying device. Figure 11 A partially enlarged structural diagram.

[0039] In the diagram: 1. Frame; 2. Conveying module; 201. Rotating shaft; 202. Guide rail; 203. Conveying chain; 204. Sprocket; 205. Limiting frame; 206. Extrusion frame; 207. Tooth block; 208. Gear; 209. First ball bearing; 210. Turntable; 3. Suspension module; 301. Hanger; 302. Connecting frame; 303. Clamp; 304. Rubber pad; 305. Connecting ring; 306. Spring; 307. Slide groove; 308. Limiting block; 309. Semi-threaded bolt; 4. Sheet metal; 5. Spraying module; 501. Mounting bracket; 502. First external connecting pipe; 503. Corrugated pipe; 504. Nozzle; 505. Fixing bracket; 506. Stop block; 507. Torsion spring; 508. Touch switch; 509. Arc-shaped protrusion; 510. Fixing rod; 511. Rotating bracket; 6. Recycling module; 601. Flow guide frame; 602. Second external connecting pipe; 603. Collection box; 7. Cleaning module; 701. Partition plate; 702. Guide groove; 703. Baffle plate; 704. Slip ring; 705. Scraper frame; 706. Limiting groove; 707. Second ball bearing. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0041] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] Please see Figures 1-12As shown, a thermosetting powder coating spraying device includes a frame 1 and a plate 4. A conveying module 2 is provided between the inner walls of both sides of the frame 1 to move the plate 4 in a circular motion. A suspension module 3 is provided on the conveying module 2 to fix the plate 4. Multiple spraying modules 5 are provided on the bottom inner wall of the frame 1 to uniformly spray the plate 4. These multiple spraying modules 5 are arranged in a circle, with the sprayed powder coating directed towards the center of their circle. The multiple spraying modules 5 can spray the plate 4 at different positions, enabling continuous spraying of multiple plates 4. A contact component is provided on one side of each spraying module 5 to control the powder coating spraying. A recovery module 6 is provided at the bottom of the frame 1, below the suspension module 3, to absorb excess powder coating. A partition 701 is provided behind the powder coating sprayed by the spraying module 5. The partition 701 is welded to the bottom inner wall of the frame 1. In use, the plate 4 is installed on the suspension module 3. The suspension module 3 and the plate 4 are driven to move in a ring by the conveying module 2. During the movement, the plate 4 will rotate. The spraying module 5 then sprays the plate 4 evenly, thus completing the uniform spraying of multiple surfaces of the plate 4. During the spraying process, the powder coating is recovered by the recovery module 6, which improves the resource saving effect of the equipment. The plate 4 is sprayed while it is moving without stopping the conveyor, which improves the spraying efficiency of the plate 4. Except for specially specified parts, the entire equipment is made of conductive metal, so that the plate 4 can always be grounded, which improves the powder adsorption efficiency.

[0044] To achieve uninterrupted spraying of multiple plates 4, the conveying module 2 of this invention includes a rotating shaft 201 that rotates between the bottom and top of the frame 1. A sprocket 204 is keyed to the top of the outer circumference of the rotating shaft 201. A conveying chain 203 meshes with the sprocket 204 and is connected to the outside. An annular guide rail 202 is fixed to the inner top wall of the frame 1 by bolts. A wire is provided between the guide rail 202 and the ground to achieve electrical connection between the guide rail 202 and the ground, so that the plates 4 can always be grounded. When the external power drives the conveying chain 203 to move, the suspension module 3 and the plates 4 located on the conveying chain 203 are moved along with it and guided by the sprocket 204, so that the plates 4 move in a ring, thereby achieving uninterrupted spraying of multiple plates 4.

[0045] To suspend the sheet material 4, the suspension module 3 of this invention includes a hanger 301 that slides on the inner wall of the bottom of the guide rail 202. The bottom of the hanger 301 is slidably connected to a connecting frame 302 through the conveyor chain 203. The connecting frame 302 and the hanger 301 are connected by a lifting component. The bottom of the connecting frame 302 is provided with a clamping component to fix the sheet material 4. The bottom of the guide rail 202 is provided with a transmission component to drive the sheet material 4 to rotate. The sheet material 4 is placed on the clamping component to complete the suspension of the sheet material 4. During the movement of the conveyor chain 203, the transmission component will cause the sheet material 4 to rotate, thereby realizing multi-side spraying of the sheet material 4.

[0046] To secure the sheet material 4 when not being painted, the lifting assembly in this invention includes a spring 306 fixed to the bottom of the hanger 301. A connecting ring 305, fitted around the outer circumference of the hanger 301, is fixed to the top of the spring 306. The connecting ring 305 is rotatably connected to the connecting frame 302. A rubber pad 304 is bonded to the contact surface between the connecting frame 302 and the conveyor chain 203. When the sheet material 4 is not inside the frame 1, the elastic spring 306 pushes the connecting ring 305 upward, thereby pushing the connecting frame 302 upward. This causes the rubber pad 304 to come into contact with the conveyor chain 203, increasing the friction between the connecting frame 302 and the conveyor chain 203. This secures the connecting frame 302 when the sheet material 4 is not being painted, thereby reducing the amount of dust falling off the painted sheet material 4 during transfer and improving the painting quality of the equipment.

[0047] To install the sheet metal 4, the clamping assembly of this invention includes two threaded holes at the bottom of the connecting frame 302. A semi-threaded bolt 309 is threaded into each threaded hole, and a limiting block 308 is fitted onto the unthreaded portion of the semi-threaded bolt 309. Two clamps 303 are provided at the bottom of the connecting frame 302. A sliding groove 307 is provided through the bottom of each clamp 303, and the limiting block 308 slides within the sliding groove 307. This allows for clamping and fixing of the sheet metal 4 with a thickness not exceeding the length of the sliding groove 307, improving the applicability of the equipment. Furthermore, the semi-threaded bolt 309 can contact the clamp 303. During the installation of the sheet metal 4, the semi-threaded bolt 309 is loosened, causing it to move downwards, thereby releasing the clamp 303. Then, one end of the clamp 303 passes through the sheet metal 4, and the clamp 303 and the connecting frame 302 jointly clamp the sheet metal 4. Finally, the semi-threaded bolt 309 is tightened to fix the clamp 303, completing the clamping and installation of the sheet metal 4.

[0048] To enable multi-sided spraying of the sheet 4, the transmission assembly in this invention includes a gear 208 and a turntable 210 keyed to the outer circumference of the connecting frame 302, with the gear 208 fixed to the turntable 210. A limit frame 205 is bolted to the bottom of the guide rail 202, and the connecting frame 302 is located within the limit frame 205. An extrusion frame 206 is welded to the bottom of the limit frame 205. Multiple toothed blocks 207 are integrally formed on the inner circumference of the extrusion frame 206, and these toothed blocks 207 can mesh with the gear 208. Multiple roller grooves are formed on the top of the turntable 210, and first ball bearings 209 roll within these grooves, with the first ball bearings 209 contacting the extrusion frame 206. This reduces the friction between the turntable 210 and the extrusion frame 206, allowing the turntable 210 to rotate easily. During the movement of the conveyor chain 203, the inclined surface on one side of the extrusion frame 206 will press the turntable 210, causing the connecting frame 302, turntable 210, and gear 208 to move downwards together until the turntable 210 is below the extrusion frame 206. As the conveyor chain 203 continues to move, the gear 208 will mesh with the tooth block 207, causing the gear 208 to rotate. This will drive the connecting frame 302 and the plate 4 to rotate together, allowing the plate 4 to rotate while moving in a ring. This enables spraying on multiple sides, improving the coverage of the sprayed material on the plate 4.

[0049] For spraying the sheet 4, the spraying module 5 in this invention includes a mounting frame 501 welded to the bottom of the frame 1 and a fixing frame 505 welded to the inner walls of multiple sides of the frame 1. A rotating frame 511 is rotatably connected to the bottom of the fixing frame 505 via bearings. A spray nozzle 504 is threadedly fixed to one side of the rotating frame 511, and multiple spray nozzles 504 on the rotating frame 511 are staggered and all face the partition 701. A corrugated pipe 503 connected to the spray nozzle 504 is fixed between the mounting frame 501 and the rotating frame 511 via a clamp. One side of 501 is fixed with a first external pipe 502 that is connected to the corrugated pipe 503 and the external feeding pipe by threads. The external feeding pipe is equipped with an electric control valve to control the opening and closing of the feeding pipe. During the movement of the conveyor chain 203, the rotating frame 511 is driven to swing through the contact component, thereby driving the nozzle 504 to swing, thereby expanding the spraying range of the nozzle 504 and increasing the contact time between the powder coating sprayed by the nozzle 504 and the board 4, thereby achieving uniform powder coating, avoiding the occurrence of spraying dead corners, and improving the spraying quality of the equipment.

[0050] To enable the nozzle to oscillate, the contact assembly in this invention includes a fixing rod 510 fixed to the outer circumference of the rotating frame 511, and the fixing rod 510 is in contact with the turntable 210. A torsion spring 507, which is fixed to the rotating frame 511, is bolted to the bottom of the fixing frame 505. Multiple stops 506, which contact the fixing rod 510, are welded to the bottom of the fixing frame 505 to block the fixing rod 510 and prevent excessive rotation or continuous oscillation. A touch switch 508 is bolted to one side of the fixing frame 505 and is electrically connected to a solenoid valve. An arc-shaped protrusion 509, which contacts the touch switch 508, is welded to one side of the fixing rod 510. When the rotating frame 511 rotates, the rotating frame 511 rotates together with the fixing rod 510. The movement causes the arc-shaped protrusion 509 to disengage from the touch switch 508, which in turn causes the touch switch 508 to generate an electrical signal that is transmitted to the external host. The host processes the signal and transmits it to the electronic control valve, opening the pre-set electronic control valves in this row, allowing the powder coating to be sprayed from the nozzle 504, realizing intermittent spraying of the powder coating and saving the amount of powder coating used. During the movement of the conveyor chain 203, the turntable 210 will squeeze and push the fixed rod 510, thereby causing the fixed rod 510 to drive the rotating frame 511 to rotate. When the turntable 210 disengages from the fixed rod 510, the torsion spring 507 with torque will drive the fixed rod 510 to return to its original position. This process is repeated to realize the oscillation of the nozzle 504, improving the uniformity of the spraying of the nozzle 504.

[0051] To recycle excess powder coating inside the frame 1, the recycling module 6 in this invention includes a guide frame 601 fixed to the bottom of the frame 1. The bottom of the guide frame 601 is welded with a second external pipe 602 fixed to an external vacuum cleaner. The outer circumferential wall of the rotating shaft 201 is provided with a cleaning module 7 for scraping the partition 701. When at least one solenoid valve in this column is opened, the external vacuum cleaner below the current column is activated. The vacuum cleaner will suck up the excess powder coating sprayed out, thereby controlling the dust concentration inside the frame 1, keeping the internal dust concentration in a relatively stable state, avoiding the risk of dust explosion, and improving the safety of the equipment.

[0052] To clean the powder coating accumulated on the partition 701, the cleaning module 7 of this invention includes two guide grooves 702 formed on the outer circumference of the rotating shaft 201, and the two guide grooves 702 can form a complete reciprocating motion groove. A slip ring 704 is sleeved on the outer circumference of the rotating shaft 201. A limiting groove 706 is formed on one side of the inner wall of the slip ring 704. A second ball bearing 707 is rolled in the limiting groove 706 and is located in the guide groove 702. A scraper 705 is welded to one side of the outer wall of the slip ring 704 and contacts the partition 701. A collection box 603 is provided between the partition 701 and the frame 1 and is fixed to the partition 701. A baffle 703 is welded to the top of the outer circumference of the partition 701. The baffle 703 blocks the dust and paint pushed up by the scraper 705 on the partition 701, causing it to fall off the inclined surface above the scraper 705. During the movement of the conveyor chain 203, the conveyor chain 203 drives the sprocket 204 to rotate, which in turn drives the rotating shaft 201 to rotate. This causes the limiting groove 706 to squeeze the second ball 707, causing the slip ring 704 to move up and down. The up and down movement of the slip ring 704 drives the scraper 705 to move up and down, thereby scraping and cleaning the side of the partition 701 facing the plate 4. This prevents the powder paint from accumulating and thickening over time, which would affect the rotation of the plate 4 and improve the cleaning effect and operational stability of the equipment.

[0053] It should be noted that the touch switch 508, the electric control valve, the main unit and the vacuum cleaner in this invention are all existing electrical components or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods, and will not be described in detail here.

[0054] The present invention is used in the following steps:

[0055] S1: When installing plate 4, loosen the semi-threaded bolt 309, move the semi-threaded bolt 309 downward, thereby releasing the fixation of the clamp 303. Then, pass one end of the clamp 303 through plate 4, and make the clamp 303 and the connecting frame 302 clamp plate 4 together. Then tighten the semi-threaded bolt 309 to fix the clamp 303, thus completing the clamping and installation of plate 4.

[0056] S2: The conveyor chain 203 is moved by external power, which will cause the inclined surface on one side of the extrusion frame 206 to press the turntable 210, thereby causing the connecting frame 302, the turntable 210, and the gear 208 to move downward together until the turntable 210 is below the extrusion frame 206.

[0057] S3: As the conveyor chain 203 continues to move, it will cause the gear 208 to mesh with the tooth block 207, thereby causing the gear 208 to rotate, which in turn drives the connecting frame 302 and the plate 4 to rotate together, so that the plate 4 rotates while moving in a ring.

[0058] S4: When the plate 4 is conveyed to the nozzle 504, the turntable 210 will squeeze and push the fixing rod 510, thereby causing the fixing rod 510 to drive the rotating frame 511 to swing, thereby causing the nozzle 504 to swing, thus expanding the spray range of the nozzle 504.

[0059] S5: When the turntable 210 disengages from the fixed rod 510, the torsion spring 507 with torque will drive the fixed rod 510 to return to its original position;

[0060] S6: During the swing of the fixed rod 510, the rotating frame 511 will rotate together with the fixed rod 510, thereby causing the arc-shaped protrusion 509 to disengage from the touch switch 508, and then the touch switch 508 will generate an electrical signal to transmit to the external host. The host processes the signal and transmits the signal to the electronic control valve, opening the pre-set electronic control valve of this column, so that the powder coating can be sprayed from the nozzle 504. At the same time, the external vacuum cleaner below the current column will be activated, and the vacuum cleaner will vacuum up the excess powder coating sprayed out.

[0061] S7: During the movement of the conveyor chain 203, the conveyor chain 203 will drive the sprocket 204 to rotate, thereby driving the rotating shaft 201 to rotate, which in turn causes the limiting groove 706 to squeeze the second ball 707, causing the slip ring 704 to move up and down. The up and down movement of the slip ring 704 will drive the scraper 705 to move up and down, thereby scraping and cleaning the side of the partition 701 facing the plate 4, avoiding the accumulation and thickening of powder coating over a long period of use, which would affect the rotation of the plate 4;

[0062] S8: The conveyor chain 203 continues to convey the material past the front of multiple nozzles 504 and is completely sprayed by the nozzles 504. It can not only drive the plate 4 to move in a ring, but also make the plate 4 rotate during the movement. It can keep the conveying of the plate 4 without stopping during the spraying process, improve the spraying efficiency of the plate 4, and also keep the plate 4 grounded, improving the powder adsorption efficiency.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A thermosetting powder coating spraying device, comprising a frame (1) and a plate (4), characterized in that, The frame (1) is provided with a conveying module (2) between the inner walls on both sides to move the plate (4) so ​​that the plate (4) can move in a ring. The conveying module (2) is provided with a suspension module (3) for fixing the plate (4). The bottom inner wall of the frame (1) is provided with multiple spraying modules (5) for uniformly spraying the plate (4). The multiple spraying modules (5) are distributed in a circle, and the powder coating they spray is directed toward the center of their distribution circle. One side of the multiple spraying modules (5) is provided with a contact component for controlling the spraying of the powder coating. The bottom of the frame (1) is provided with a recycling module (6) for absorbing excess powder coating below the suspension module (3). A partition (701) is provided behind the powder coating sprayed by the spraying module (5). The partition (701) is fixedly connected to the bottom inner wall of the frame (1). The conveying module (2) includes a rotating shaft (201) rotatably disposed between the bottom and top of the frame (1). A sprocket (204) is keyed to the top of the outer circumference of the rotating shaft (201). A conveying chain (203) meshes with the sprocket (204) and is connected to the outside. A ring-shaped guide rail (202) is fixedly connected to the inner top wall of the frame (1). The suspension module (3) includes a hanger (301) that slides on the inner wall of the bottom of the guide rail (202). The bottom of the hanger (301) is slidably connected to a connecting frame (302) through a conveyor chain (203). The connecting frame (302) and the hanger (301) are connected by a lifting component. The bottom of the connecting frame (302) is provided with a clamping component for fixing the plate (4). The bottom of the guide rail (202) is provided with a transmission component for driving the plate (4) to rotate. The lifting assembly includes a spring (306) fixed to the bottom of the hanger (301), a connecting ring (305) fixed to the top of the spring (306) and sleeved on the outer circumference of the hanger (301), and the connecting ring (305) is rotatably connected to the connecting frame (302), and a rubber pad (304) is bonded to the contact surface between the connecting frame (302) and the conveyor chain (203). The transmission assembly includes a gear (208) and a turntable (210) keyed to the outer circumference of the connecting frame (302), and the gear (208) is fixed to the turntable (210). The bottom of the guide rail (202) is fixedly connected to a limiting frame (205), and the connecting frame (302) is located inside the limiting frame (205). The bottom of the limiting frame (205) is fixedly connected to an extrusion frame (206). The inner circumference of the extrusion frame (206) is integrally formed with multiple tooth blocks (207), and the tooth blocks (207) can mesh with the gear (208). The top of the turntable (210) is provided with multiple rolling grooves, and a first ball (209) rolls in the rolling grooves, and the first ball (209) can contact the extrusion frame (206).

2. The thermosetting powder coating spraying equipment according to claim 1, characterized in that, The clamping assembly includes two threaded holes at the bottom of the connecting frame (302), with a half-threaded bolt (309) threadedly connected in the threaded holes. The unthreaded part of the half-threaded bolt (309) is fitted with a limiting block (308). The bottom of the connecting frame (302) is provided with two clamps (303). The bottom of the clamps (303) is provided with a through groove (307), and the limiting block (308) slides in the groove (307). The half-threaded bolt (309) can contact the clamps (303).

3. The thermosetting powder coating spraying equipment according to claim 1, characterized in that, The spraying module (5) includes a mounting bracket (501) fixedly connected to the bottom of the frame (1) and a fixing bracket (505) fixedly connected to the inner walls of multiple sides of the frame (1). The bottom of the fixing bracket (505) is rotatably connected to a rotating bracket (511) via a bearing. A nozzle (504) is fixedly connected to one side of the rotating bracket (511). A corrugated pipe (503) connected to the nozzle (504) is fixedly connected between the mounting bracket (501) and the rotating bracket (511). A first external pipe (502) connected to the corrugated pipe (503) and the external feeding pipe is fixedly connected to one side of the mounting bracket (501).

4. The thermosetting powder coating spraying equipment according to claim 3, characterized in that, The contact assembly includes a fixed rod (510) fixed to the outer circumference of the rotating frame (511), and one side of the fixed rod (510) is in contact with the turntable (210). The bottom of the fixed frame (505) is fixedly connected to a torsion spring (507) that is fixed to the rotating frame (511). The bottom of the fixed frame (505) is fixedly connected to a plurality of stops (506) that are in contact with the fixed rod (510). One side of the fixed frame (505) is fixedly connected to a touch switch (508), and the other side of the fixed rod (510) is fixedly connected to an arc-shaped protrusion (509) that is in contact with the touch switch (508).

5. The thermosetting powder coating spraying equipment according to claim 1, characterized in that, The recycling module (6) includes a flow guide (601) fixed to the bottom of the frame (1). The bottom of the flow guide (601) is fixedly connected to a second external pipe (602) that is fixed to an external vacuum cleaner. The outer circumferential wall of the rotating shaft (201) is provided with a cleaning module (7) for scraping and cleaning the partition (701).

6. The thermosetting powder coating spraying equipment according to claim 5, characterized in that, The cleaning module (7) includes two guide grooves (702) on the outer circumference of the rotating shaft (201), and the two guide grooves (702) can form a complete reciprocating motion groove. A slip ring (704) is sleeved on the outer circumference of the rotating shaft (201). A limiting groove (706) is opened on one side of the inner wall of the slip ring (704). A second ball (707) is rolled in the limiting groove (706) and the second ball (707) is located in the guide groove (702). A scraper (705) is fixedly connected to one side of the outer wall of the slip ring (704), and the scraper (705) is in contact with the partition (701). A collection box (603) is provided between the partition (701) and the frame (1), and the collection box (603) is fixed to the partition (701). A baffle (703) is fixedly connected to the top of the outer circumference of the partition (701).

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