A vacuum spray painting device for car emblems

Abstract

This invention relates to the field of automotive logo processing technology, specifically to a vacuum painting device for automotive logos. The device includes a vacuum painting cylinder with a main vacuum pump connected to its outer side. It also includes a loading guide cylinder connected to the top center of the vacuum painting cylinder, and a unloading guide cylinder connected to the bottom center of the vacuum painting cylinder. This invention uses logo processing frames to fix the logos and utilizes a closed top and bottom cover to create multiple independently spaced closed spaces within the loading and unloading guide cylinders. Multiple logo processing frames are sequentially slid into the loading guide cylinder through the top opening, slide down the loading guide cylinder to the vacuum painting cylinder, and then further slide into the unloading guide cylinder, finally exiting one by one from the bottom opening of the unloading guide cylinder. This achieves continuous loading and unloading operations, avoiding the frequent pressurization and depressurization operations required in traditional batch processing methods, greatly improving production efficiency and quality.

Description

Technical Field

[0001] This invention relates to the field of vehicle logo processing technology, and in particular to a vacuum spray painting device for vehicle logos. Background Technology

[0002] With the development of the automotive industry, the demand for high-quality and high-precision surface treatment is increasing. As an important part of vehicle brand identification, the appearance and durability of car emblems are directly related to brand image and user satisfaction. Although traditional air spraying methods are widely used, they have many limitations when spraying delicate parts such as car emblems. For example, it is difficult to achieve a uniform coating, they are easily affected by environmental dust, and there are environmental pollution problems caused by solvent evaporation. Therefore, vacuum spraying technology has gradually become a more ideal solution.

[0003] However, existing vacuum painting systems typically use a batch processing method, meaning that only a limited number of signs can be processed at a time. This means that before loading a new batch of workpieces, the signs that have already been painted must be removed and the vacuum must be re-exposed to prepare for the next operation. Each loading and unloading process disrupts the vacuum environment and requires re-establishing the vacuum state. This not only prolongs the time of each cycle but may also adversely affect the quality of the signs and the lifespan of the equipment due to repeated pressure changes. This frequent depressurization and pressurization process is not only time-consuming but also increases energy consumption and reduces production efficiency. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a vacuum painting device for automobile signs, so as to solve the problem that existing vacuum painting equipment cannot achieve continuous processing, and requires cyclic depressurization and pressurization for each loading and unloading, resulting in low overall production efficiency.

[0005] To achieve the above objectives, the present invention provides a vacuum spray painting device for automobile nameplates, comprising a vacuum spray painting cylinder, wherein a main vacuum pump is connected to the outside of the vacuum spray painting cylinder, and further comprising:

[0006] A feeding guide cylinder is connected and installed at the top center of the vacuum spray paint cylinder, and a discharging guide cylinder is connected and installed at the bottom center of the vacuum spray paint cylinder. Multiple pressure reducing conveying pipes are evenly arranged and connected in the middle of the side wall of the feeding guide cylinder along the vertical direction, and multiple pressure increasing conveying pipes are evenly arranged and connected in the middle of the side wall of the discharging guide cylinder along the vertical direction.

[0007] A ring-shaped spray gun is arranged around the inside of the vacuum spray gun, and multiple atomizing nozzles are evenly arranged in a circular shape around the center of the ring-shaped spray gun.

[0008] Multiple car logo processing frames are nested inside the feeding guide cylinder and the unloading guide cylinder. The upper and lower ends of the car logo processing frame are respectively connected to a closed top cover and a closed bottom cover. The closed top cover and the closed bottom cover are dimensionally matched with the feeding guide cylinder and the unloading guide cylinder. When the car logo processing frame is nested and slid inside the feeding guide cylinder or the unloading guide cylinder, a closed space is formed by the closed top cover and the closed bottom cover. Multiple car logo processing frames are stacked end to end by the closed top cover and the closed bottom cover so that they can slide down the feeding guide cylinder to the vacuum spray paint cylinder and further slide into the unloading guide cylinder.

[0009] Furthermore, the top surface of the closed top cover and the bottom surface of the closed bottom cover are respectively provided with a fitting positioning block and a fitting positioning groove, the dimensions of the fitting positioning block and the fitting positioning groove are mutually matched, the closed top cover is connected to the closed bottom cover by fitting the fitting positioning block and the fitting positioning groove, and a connecting magnet is provided in the middle of the fitting positioning block and the fitting positioning groove.

[0010] Furthermore, the interior of the vacuum spray gun is provided with multiple spacer plates evenly arranged in the vertical direction. The multiple spacer plates divide the interior of the vacuum spray gun into multiple spacer spray chambers. Each spacer spray chamber is independently provided with an annular spray frame in the middle. A spacer sealing ring is provided through the center of the spacer plate.

[0011] Furthermore, a horizontal guide groove is provided in the middle of the spaced closed collar, and a horizontal rack is slidably fitted inside the horizontal guide groove. A synchronous translation frame is connected to the outer end of the horizontal rack, and a translation telescopic rod is connected in the middle of the synchronous translation frame. The translation telescopic rod drives all the horizontal racks to translate synchronously along the horizontal guide groove through the synchronous translation frame.

[0012] Furthermore, a rotating base is provided at the center of the closed bottom cover, and a car logo clamp is connected above the rotating base. The car logo clamp is rotatably connected to the closed bottom cover through the rotating base. A rotating gear is connected to the bottom end of the rotating base. A rack clearance groove is horizontally provided in the middle of the interior of the closed bottom cover. The rotating gear and the horizontal rack are dimensionally matched.

[0013] Furthermore, both the inner walls of the feeding guide cylinder and the unloading guide cylinder are provided with vertical conveying grooves at their lower ends. A conveying wheel is rotatably connected and fitted in the middle of the vertical conveying groove. Multiple limit levers are evenly connected and arranged around the outer side of the conveying wheel. A servo motor is connected and arranged in the middle of the conveying wheel.

[0014] Furthermore, a circulating conveyor frame is provided above the feeding guide cylinder and below the unloading guide cylinder. A rotary guide rail is arranged around the middle of the circulating conveyor frame, and a rotary chain is arranged around the middle of the rotary guide rail. Multiple unit sealing cylinders are evenly connected around the outer side of the rotary guide rail. The unit sealing cylinders are slidably connected to the circulating conveyor frame through the rotary guide rail. A feeding conveyor frame is provided above the top of the feeding guide cylinder. A pneumatic telescopic rod is connected in the middle of the feeding conveyor frame. A feeding pressure plate is connected to the bottom end of the pneumatic telescopic rod. The rotary chain pulls and drives all unit sealing cylinders to move synchronously along the rotary guide rail and pass sequentially above the top of the feeding guide cylinder and directly below the feeding pressure plate. The closed top cover and closed bottom cover are dimensionally matched with the unit sealing cylinders. Both the top and bottom ends of the unit sealing cylinders are provided with end openings.

[0015] Furthermore, a limiting guide sleeve is horizontally provided in the middle of the end opening, a limiting block is slidably fitted inside the limiting guide sleeve, a reset spring is connected in the middle of the limiting block, and an unlocking electromagnet is installed at the rear end of the limiting guide sleeve.

[0016] Furthermore, a closed drying cylinder is connected in the middle of the feeding guide cylinder. Multiple electric heating tubes are arranged around the middle of the closed drying cylinder. Multiple annular heating fins are evenly and parallelly arranged on the outer side of the electric heating tubes in the vertical direction. When the multiple car logo processing frames slide down the feeding guide cylinder into the closed drying cylinder, they are located at the center of the inner side of the annular heating fins.

[0017] Furthermore, an air outlet is arranged around the bottom of the closed drying cylinder, an annular fan is arranged around the air outlet, and multiple air inlets are evenly arranged around the middle of the side wall of the closed drying cylinder, with a filter screen arranged in the middle of the air inlet.

[0018] The beneficial effects of this invention are as follows: As can be seen from the above description, the automotive emblem vacuum painting device provided by this invention fixes the emblem with an emblem processing frame and utilizes a closed top cover and a closed bottom cover to form multiple independent, spaced closed spaces within the loading and unloading guide cylinders. This allows multiple emblem processing frames to be sequentially slid in through the top opening of the loading guide cylinder, slide down the loading guide cylinder to the vacuum painting cylinder, and then further slide into the unloading guide cylinder, finally being output one by one from the bottom opening of the unloading guide cylinder. This achieves continuous loading and unloading operations, avoiding the frequent pressurization and depressurization operations in traditional batch processing methods. This ensures that the inside of the vacuum painting cylinder remains in a stable low-pressure state, greatly improving production efficiency and quality. Furthermore, since each emblem processing frame is an independent closed unit, during transport along the loading or unloading guide cylinder, gentle pressure regulation can be gradually achieved through multiple depressurization and pressurization conveying pipes connected to the side walls. This effectively reduces the impact of each loading and unloading operation on the overall vacuum environment, reduces the amplitude and frequency of pressure fluctuations, thereby reducing the workload of the main vacuum pump, extending the service life of the equipment, and ensuring the consistency of the painting quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the internal structure of the vacuum spray paint cartridge according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the outer structure of the vacuum spray gun according to an embodiment of the present invention;

[0022] Figure 3 This is a front view of an embodiment of the present invention.

[0023] Figure 4 This is a side view of an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the feeding guide cylinder according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the car logo processing rack according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the vertical conveying trough according to an embodiment of the present invention;

[0027] Figure 8This is a schematic diagram of the structure of the annular spray paint frame according to an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the circulating conveyor frame according to an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the feeding conveyor frame according to an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the structure of the unit sealing cylinder according to an embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the structure of the closed drying cylinder according to an embodiment of the present invention.

[0032] The diagram is marked as follows:

[0033] 1. Vacuum spray gun; 101. Main vacuum pump; 102. Main pressure gauge; 103. Spacing sealing plate; 104. Spacing spray tank; 105. Circular spray frame; 106. Atomizing nozzle; 107. Paint delivery pipe; 108. High-pressure pump; 2. Feeding guide cylinder; 201. Pressure reducing delivery pipe; 203. Discharging guide cylinder; 204. Pressure increasing delivery pipe; 205. Auxiliary pressure gauge; 206. Electromagnetic switch valve; 207. Auxiliary vacuum pump; 208. Balanced air pump; 3. Vertical conveying trough; 301. Conveying wheel; 302. Limit lever; 303. Servo motor; 4. Spacing sealing collar; 401. Horizontal guide groove; 402. Horizontal rack; 403. Synchronous translation frame; 404. Translation telescopic rod; 5. Car logo processing frame; 501. Sealed top cover; 5 02. Closed bottom cover; 503. Fitting positioning block; 504. Fitting positioning groove; 505. Connecting magnet; 6. Car logo clamp; 601. Rotating base; 602. Rotating gear; 603. Rack clearance groove; 7. Circulating conveyor frame; 701. Rotary guide rail; 702. Rotary chain; 703. Drive sprocket; 704. Conveyor motor; 705. Feeding conveyor frame; 706. Pneumatic telescopic rod; 707. Feeding pressure plate; 8. Unit sealing cylinder; 801. End opening; 802. Limiting guide sleeve; 803. Limiting block; 804. Return spring; 805. Unlocking electromagnet; 9. Closed drying cylinder; 901. Air inlet; 902. Filter screen; 903. Electric heating tube; 904. Annular heating fins; 905. Air outlet; 906. Annular fan. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0035] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, a vacuum spray painting device for automobile logos includes a vacuum spray painting cylinder 1, a main vacuum pump 101 connected to the outside of the vacuum spray painting cylinder 1, and further includes:

[0037] The feeding guide cylinder 2 is connected to the top middle of the vacuum spray paint cylinder 1. The bottom middle of the vacuum spray paint cylinder 1 is connected to the unloading guide cylinder 203. Multiple pressure reducing conveying pipes 201 are evenly arranged and connected in the vertical direction on the middle of the side wall of the feeding guide cylinder 2. Multiple pressure increasing conveying pipes 204 are evenly arranged and connected in the vertical direction on the middle of the side wall of the unloading guide cylinder 203.

[0038] A ring-shaped paint spray frame 105 is arranged around the inside of the vacuum paint spraying cylinder 1. Multiple atomizing nozzles 106 are evenly arranged in a circular shape around the center of the ring-shaped paint spray frame 105.

[0039] Multiple car logo processing frames 5 are nested inside the loading guide cylinder 2 and the unloading guide cylinder 203. The upper and lower ends of the car logo processing frame 5 are respectively connected to a closed top cover 501 and a closed bottom cover 502. The closed top cover 501 and the closed bottom cover 502 are dimensionally matched with the loading guide cylinder 2 and the unloading guide cylinder 203. When the car logo processing frame 5 is nested and slid inside the loading guide cylinder 2 or the unloading guide cylinder 203, a closed space is formed by the closed top cover 501 and the closed bottom cover 502. Multiple car logo processing frames 5 are stacked end to end by the closed top cover 501 and the closed bottom cover 502 so that they can slide down the loading guide cylinder 2 to the vacuum spray gun 1 and further slide into the unloading guide cylinder 203.

[0040] In this embodiment, the device fixes the car logos using car logo processing frames 5. Each car logo processing frame 5 has a closed top cover 501 and a closed bottom cover 502 connected to its upper and lower ends. The vacuum spray paint cylinder 1 has an upper feed guide cylinder 2 and an lower feed guide cylinder 203 connected to its upper and lower ends, respectively. When the car logo processing frames 5 are nested and slid inside the upper feed guide cylinder 2 or the lower feed guide cylinder 203, a closed space is formed by the closed top cover 501 and the closed bottom cover 502. Multiple car logo processing frames 5 are stacked end to end by the closed top cover 501 and the closed bottom cover 502 to slide down the upper feed guide cylinder 2 to the vacuum spray paint cylinder 1. Further sliding into the unloading guide cylinder 203, multiple car logo processing frames 5 can form multiple independent, enclosed spaces when conveyed along the loading guide cylinder 2 or unloading guide cylinder 203, achieving overall sealing of the vacuum spray paint cylinder 1. A main pressure gauge 102 is also connected to the outside of the vacuum spray paint cylinder 1. The pressure inside the vacuum spray paint cylinder 1 is regulated and controlled by the main vacuum pump 101 and the main pressure gauge 102. Multiple pressure-reducing conveying pipes 201 and pressure-increasing conveying pipes 204 are respectively connected to the side walls of the loading guide cylinder 2 or unloading guide cylinder 203. The middle of the pressure-reducing conveying pipes 201 and pressure-increasing conveying pipes 204 is connected in sequence. An auxiliary pressure gauge 205 and an electromagnetic switch valve 206 are provided. An auxiliary vacuum pump 207 and a balancing gas pump 208 are respectively connected to the outer ends of the pressure-reducing delivery pipe 201 and the pressure-increasing delivery pipe 204. This allows for gradual pressure reduction or increase as the logo processing frame 5 is conveyed along the loading guide cylinder 2 or the unloading guide cylinder 203. Multiple logo processing frames 5 can be sequentially slid into the loading guide cylinder 2 through the top opening. Then, the multiple logo processing frames 5 are stacked end-to-end through the closed top cover 501 and the closed bottom cover 502 so that they can slide downwards along the loading guide cylinder 2 to the vacuum spray paint cylinder 1. The circular paint rack 105 has multiple atomizing nozzles 106 arranged evenly around its center for uniform vacuum painting. The paint is then output one by one through the bottom opening of the unloading guide cylinder 203, thus achieving continuous loading and unloading processing. This avoids the frequent pressurization and depressurization operations in traditional batch processing methods, greatly improving production efficiency. Since each car logo processing rack 5 is an independent closed unit, it can gradually achieve gentle pressure adjustment through multiple depressurization conveying pipes 201 and pressurization conveying pipes 204 connected to the side wall when conveyed along the loading guide cylinder 2 or unloading guide cylinder 203.This method effectively reduces the impact of each loading and unloading operation on the overall vacuum environment, reduces the amplitude and frequency of pressure fluctuations, thereby alleviating the workload of the main vacuum pump 101, extending the service life of the equipment, and ensuring the consistency of the coating quality. At the same time, the logo processing rack 5 is dimensionally matched with the loading guide cylinder 2 and the unloading guide cylinder 203 through the closed top cover 501 and the closed bottom cover 502, ensuring that each processing rack can form a completely closed space during movement. The multiple logo processing racks 5 are stacked end to end, which further enhances the sealing performance of the entire system, so that the inside of the vacuum paint spraying cylinder 1 always maintains a stable low pressure state, which is conducive to improving the quality and uniformity of the coating.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, preferably, the top surface of the closed top cover 501 and the bottom surface of the closed bottom cover 502 of the device are respectively provided with a fitting positioning block 503 and a fitting positioning groove 504. During stacking and conveying processing, the closed top cover 501 can be connected to the closed bottom cover 502 by fitting the fitting positioning block 503 and the fitting positioning groove 504. At the same time, it is fixed by the magnetic attraction of the connecting magnet 505 provided in the middle of the fitting positioning block 503 and the fitting positioning groove 504, thereby improving the stability of stacking and conveying and improving the overall stability and reliability of the device processing.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, preferably, the vacuum spray gun 1 of the device is provided with multiple spaced spray chambers 104 through multiple spaced sealing plates 103. A spaced sealing collar 4 is provided through the center of the spaced sealing plate 103. When the car logo processing frame 5 is stacked and transported, it passes through the spaced sealing plate 103 through the spaced sealing collar 4. The spaced sealing collar 4 is dimensionally matched with the top cover 501 and the bottom cover 502. Each spaced spray chamber 104 is independently provided with an annular spray frame 105. When spraying, the top cover 501 and the bottom cover 502 are fitted inside the spaced sealing collar 4 for protection. Multiple spaced spray chambers 104 can realize continuous processing of multiple layers of paint.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, preferably, the logo processing frame 5 of the device fixes the logo to be processed by the logo clamp 6. The logo clamp 6 is rotatably connected to the closed bottom cover 502 through the rotating base 601. When painting, the closed top cover 501 and the closed bottom cover 502 are both fitted inside the spaced closed collar 4. At this time, the translation telescopic rod 404 drives all the horizontal racks 402 to move synchronously along the horizontal guide groove 401 through the synchronous translation frame 403. Then, the horizontal racks 402 are inserted into the rotating base 601 and the middle through the rack relief groove 603 and mesh with the rotating gear 602 so that the logo to be processed can be rotated by the rotating base 601 and the logo clamp 6, which helps to improve the uniformity of the painting process.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, preferably, the lower end of the inner wall of both the loading guide cylinder 2 and the unloading guide cylinder 203 of the device is provided with a vertical conveying groove 3. A conveying wheel 301 is rotatably connected and fitted in the middle of the vertical conveying groove 3. Multiple limiting levers 302 are evenly connected and connected around the outer side of the conveying wheel 301. When the servo motor 303 drives the conveying wheel 301 to rotate, it drives all the limiting levers 302 to move synchronously. When the limiting lever 302 moves to the middle of the inner side of the loading guide cylinder 2 or the unloading guide cylinder 203, it will block the closed top cover 501 to temporarily support and fix the car logo processing frame 5. When the limiting lever 302 rotates into the vertical conveying groove 3, the car logo processing frame 5 can continue to move downward, thereby realizing the control of the conveying work of the car logo processing frame 5, so as to further adjust the conveying and processing of the car logo.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, preferably, a circulating conveyor frame 7 is provided above the feeding guide cylinder 2 and below the unloading guide cylinder 203 of the device. A rotary guide rail 701 is arranged around the middle of the circulating conveyor frame 7, and a rotary chain 702 is arranged around the middle of the rotary guide rail 701. Multiple unit sealing cylinders 8 are evenly connected around the outer side of the rotary guide rail 701. The unit sealing cylinders 8 are slidably connected to the circulating conveyor frame 7 through the rotary guide rail 701. The dimensions of the closed top cover 501 and the closed bottom cover 502 with the unit sealing cylinders 8 are mutually dimensional. In conjunction with this, both the upper and lower ends of the unit sealing cylinder 8 are provided with end openings 801. Simultaneously, a feeding conveyor frame 705 is provided above the top of the feeding guide cylinder 2. A pneumatic telescopic rod 706 is connected to the middle of the feeding conveyor frame 705, and a feeding pressure plate 707 is connected to the bottom end of the pneumatic telescopic rod 706. When the rotary chain 702 pulls all the unit sealing cylinders 8 synchronously along the rotary guide rail 701 to the top of the feeding guide cylinder 2 and directly below the feeding pressure plate 707, the pneumatic telescopic rod 706 can then pass through the feeding mechanism. The pressure plate 707 pushes the logo processing frame 5 in the corresponding unit sealing cylinder 8 to slide down to the loading guide cylinder 2. At the same time, the unit sealing cylinder 8 on the circulating conveyor 7 below moves synchronously to the lower end of the unloading guide cylinder 203. Thus, the logo processing frame 5 at the bottom of the stack slides down into the unit sealing cylinder 8, ensuring that the logo processing frame 5 can continuously enter the vacuum spraying cylinder 1 from the loading guide cylinder 2 and be output from the unloading guide cylinder 203 to the circulating conveyor 7 after spraying, forming a closed automated conveying chain. This continuity not only improves production efficiency but also reduces manual intervention, lowers operational complexity, and achieves closed conveying before and after logo processing. It ensures that each logo processing frame 5 is always kept in a completely closed space during the conveying process. Whether in the loading or unloading stage, it can effectively prevent the entry of external air and impurities, maintain the purity of the vacuum environment, and also help reduce solvent evaporation, reduce the risk of environmental pollution, and reduce the impact of external factors on the quality of logo spraying.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, preferably, the device stores the car logo processing frame 5 before and after processing through the unit sealed cylinder 8 to achieve closed conveying before and after car logo processing, reducing the impact of external factors on the quality of logo spraying. A limiting guide sleeve 802 is horizontally provided in the middle of the end opening 801. A limiting block 803 is fitted and slidably provided on the inner side of the limiting guide sleeve 802. The car logo processing frame 5 is placed in the unit sealed cylinder 8 by the limiting block 803. A reset spring 804 is provided in the middle of the limiting block 803. An unlocking electromagnet 805 is installed at the rear end of the limiting guide sleeve 802. Thus, the unlocking electromagnet 805 can attract the magnetic limiting block 803 to move backward to unlock the car logo processing frame 5, which facilitates the loading and unloading of the car logo processing frame 5.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, preferably, a closed drying cylinder 9 is connected to the middle of the feeding guide cylinder 203 of the device. Multiple electric heating tubes 903 are arranged around the middle of the closed drying cylinder 9. Multiple annular heating fins 904 are evenly and parallelly arranged on the outer side of the electric heating tubes 903 in the vertical direction. When multiple car logo processing frames 5 slide down along the feeding guide cylinder 203 into the closed drying cylinder 9, they are located at the inner center of the annular heating fins 904. The annular fan 906 rotates, thereby driving the airflow to enter the closed drying cylinder 9 after being filtered by the filter screen 902 of the air inlet 901. Then, it flows down to the air outlet 905 through the annular heating fins 904. During this process, the airflow is heated by the electric heating tubes 903 and the annular heating fins 904, and dries the car logo after it flows through it.

[0048] In use, first connect the corresponding pipelines of the device, then fix the corresponding car logo on the car logo clamp 6, and embed the car logo processing frame 5 into the unit sealing cylinder 8. During processing, the conveyor motor 704 drives the drive sprocket 703 to rotate, which in turn drives the sprocket 703 to pull the rotary chain 702 to move. Through the pull of the rotary chain 702, all the unit sealing cylinders 8 move synchronously along the rotary guide rail 701 to the top of the feeding guide cylinder 2 and directly below the feeding pressure plate 707. At this time, the pneumatic telescopic rod 706 pushes the car logo processing frame 5 in the corresponding unit sealing cylinder 8 downward to the feeding guide cylinder 2 through the feeding pressure plate 707, so that multiple car logo processing frames 5 can slide downward to the feeding guide cylinder 2. The top cover 501 and bottom cover 502 are stacked end to end to slide down the feeding guide cylinder 2 to the vacuum spray gun 1 and further slide into the unloading guide cylinder 203. When the logo processing frame 5 is stacked and transported, it passes through the spacer sealing plate 103 through the spacer sealing collar 4. During the painting process, the top cover 501 and bottom cover 502 are both fitted inside the spacer sealing collar 4 for protection. Then, vacuum painting is performed through multiple atomizing nozzles 106 arranged evenly in a circular shape around the center of the annular spray gun 105. The atomizing nozzles 106 are connected to the high-pressure pump 108 through the paint delivery pipe 107. The high-pressure pump 108 uses the paint delivery pipe to deliver the paint. 107 conveys and directly pressurizes to the required pressure, then releases it through the small-hole nozzle of atomizing nozzle 106. At the nozzle, due to the sudden pressure drop, the paint rapidly expands and forms fine mist particles, which adhere to and cover the car logo. Simultaneously, the translation telescopic rod 404 drives all horizontal racks 402 to move synchronously along the horizontal guide groove 401 via the synchronous translation frame 403. The horizontal racks 402 mesh with the rotating gear 602 to drive the car logo to be processed to rotate via the rotating base 601 and the car logo clamp 6. Then, multiple car logo processing frames 5 slide down along the unloading guide cylinder 203 into the closed drying cylinder 9, where they are located inside the annular heating fins 904. At the side center, the airflow is driven by the rotation of the fan blades to pass through the filter screen 902 of the air inlet 901 and enter the closed drying cylinder 9. Then, it flows downward to the air outlet 905 through the annular heating fins 904. During this process, the airflow is heated by the electric heating tube 903 and the annular heating fins 904. After passing through the car logo, it dries it. Finally, the unit sealing cylinder 8 on the circulating conveyor 7 below moves synchronously to the lower end of the unloading guide cylinder 203. Thus, the car logo processing rack 5 located at the bottom of the stack slides down into the unit sealing cylinder 8, ensuring that the car logo processing rack 5 continuously enters the vacuum spray paint cylinder 1 from the loading guide cylinder 2, realizing continuous vacuum spray painting processing.

[0049] The automotive emblem vacuum painting device provided by this invention uses an emblem processing frame 5 to fix the emblem, and utilizes a closed top cover 501 and a closed bottom cover 502 to form multiple independently spaced closed spaces within the loading guide cylinder 2 and the unloading guide cylinder 203. This allows multiple emblem processing frames 5 to be sequentially slid in through the top opening of the loading guide cylinder 2, slide down the loading guide cylinder 2 to the vacuum painting cylinder 1, and then further slide into the unloading guide cylinder 203. Finally, they are output one by one from the bottom opening of the unloading guide cylinder 203, realizing continuous loading and unloading operations and avoiding the frequent pressurization and depressurization operations in traditional batch processing methods. This ensures that the vacuum spray gun 1 maintains a stable low-pressure state inside, greatly improving production efficiency and quality. Furthermore, since each car logo processing rack 5 is an independent closed unit, it can gradually achieve gentle pressure regulation through multiple pressure-reducing conveying pipes 201 and pressure-reducing conveying pipes 204 connected to the side wall during conveying along the loading guide cylinder 2 or unloading guide cylinder 203. This effectively reduces the impact of each loading and unloading on the overall vacuum environment, reduces the amplitude and frequency of pressure fluctuations, thereby reducing the workload of the main vacuum pump 101, extending the service life of the equipment, and ensuring the consistency of spraying quality.

[0050] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A vacuum spray painting device for automobile logos, comprising a vacuum spray painting cylinder (1), wherein a main vacuum pump (101) is connected to the outside of the vacuum spray painting cylinder (1), characterized in that, Also includes: A feeding guide cylinder (2) is connected and disposed at the top middle of the vacuum spray paint cylinder (1). A discharging guide cylinder (203) is connected and disposed at the bottom middle of the vacuum spray paint cylinder (1). Multiple pressure reducing conveying pipes (201) are evenly arranged and connected in the middle of the side wall of the feeding guide cylinder (2) along the vertical direction. Multiple pressure increasing conveying pipes (204) are evenly arranged and connected in the middle of the side wall of the discharging guide cylinder (203) along the vertical direction. A ring-shaped paint spray frame (105) is arranged around the inside of the vacuum paint spraying cylinder (1), and multiple atomizing nozzles (106) are evenly arranged in a circular shape around the middle of the ring-shaped paint spray frame (105). Multiple car logo processing racks (5) are nested inside the loading guide cylinder (2) and the unloading guide cylinder (203). The upper and lower ends of the car logo processing rack (5) are respectively connected to a closed top cover (501) and a closed bottom cover (502). The closed top cover (501) and the closed bottom cover (502) are dimensionally matched with the loading guide cylinder (2) and the unloading guide cylinder (203). When the car logo processing rack (5) is nested and slid inside the loading guide cylinder (2) or the unloading guide cylinder (203), a closed space is formed by the closed top cover (501) and the closed bottom cover (502). Multiple car logo processing racks (5) are stacked end to end by the closed top cover (501) and the closed bottom cover (502) to slide down along the loading guide cylinder (2) to the vacuum spray gun (1) and further slide into the unloading guide cylinder (203).

2. The vacuum painting device for automobile nameplates according to claim 1, characterized in that, The top surface of the closed top cover (501) and the bottom surface of the closed bottom cover (502) are respectively provided with a fitting positioning block (503) and a fitting positioning groove (504) that cooperate with each other. The dimensions of the fitting positioning block (503) and the fitting positioning groove (504) are mutually matched. The closed top cover (501) is connected to the closed bottom cover (502) by fitting the fitting positioning block (503) and the fitting positioning groove (504) together. A connecting magnet (505) is provided in the middle of the fitting positioning block (503) and the fitting positioning groove (504).

3. The vacuum painting device for automobile nameplates according to claim 1, characterized in that, The vacuum spray gun (1) has multiple spacer plates (103) evenly arranged vertically inside. The multiple spacer plates (103) divide the interior of the vacuum spray gun (1) into multiple spacer spray chambers (104). Each spacer spray chamber (104) has an independent annular spray frame (105) in the middle. The spacer plate (103) has a spacer sealing ring (4) through its center.

4. The vacuum painting device for automobile nameplates according to claim 3, characterized in that, A horizontal guide groove (401) is provided in the middle of the spaced closed collar (4). A horizontal rack (402) is slidably fitted inside the horizontal guide groove (401). A synchronous translation frame (403) is connected to the outer end of the horizontal rack (402). A translation telescopic rod (404) is connected in the middle of the synchronous translation frame (403). The translation telescopic rod (404) drives all the horizontal racks (402) to move synchronously along the horizontal guide groove (401) through the synchronous translation frame (403).

5. The vacuum painting device for automobile nameplates according to claim 4, characterized in that, A rotating base (601) is provided at the center of the closed bottom cover (502). A car logo clamp (6) is connected above the rotating base (601). The car logo clamp (6) is rotatably connected to the closed bottom cover (502) through the rotating base (601). A rotating gear (602) is connected to the bottom end of the rotating base (601). A rack relief groove (603) is horizontally provided in the middle of the interior of the closed bottom cover (502). The rotating gear (602) and the horizontal rack (402) are dimensionally matched.

6. The vacuum painting device for automobile nameplates according to claim 1, characterized in that, The lower end of the inner sidewall of the feeding guide cylinder (2) and the unloading guide cylinder (203) are provided with vertical conveying grooves (3). A conveying wheel (301) is rotatably connected in the middle of the vertical conveying groove (3). Multiple limit levers (302) are evenly connected around the outer side of the conveying wheel (301). A servo motor (303) is connected in the middle of the conveying wheel (301).

7. The vacuum painting device for automobile nameplates according to claim 1, characterized in that, A circulating conveyor frame (7) is provided above the feeding guide cylinder (2) and below the unloading guide cylinder (203). A rotary guide rail (701) is arranged around the middle of the circulating conveyor frame (7), and a rotary chain (702) is arranged around the middle of the rotary guide rail (701). Multiple unit sealing cylinders (8) are evenly connected around the outer side of the rotary guide rail (701). The unit sealing cylinders (8) are slidably connected to the circulating conveyor frame (7) through the rotary guide rail (701). A feeding conveyor frame (705) is provided above the top of the feeding guide cylinder (2). A pneumatic telescopic rod (706) is provided in the middle of the material conveying frame (705). A feeding pressure plate (707) is provided at the bottom end of the pneumatic telescopic rod (706). The rotary chain (702) pulls and drives all unit sealing cylinders (8) to move synchronously along the rotary guide rail (701) and pass in sequence above the top of the feeding guide cylinder (2) and directly below the feeding pressure plate (707). The closed top cover (501) and the closed bottom cover (502) are sized to match the unit sealing cylinder (8). Both the upper and lower ends of the unit sealing cylinder (8) are provided with end openings (801).

8. The vacuum painting device for automobile nameplates according to claim 7, characterized in that, A limiting guide sleeve (802) is horizontally provided in the middle of the end opening (801). A limiting block (803) is slidably fitted inside the limiting guide sleeve (802). A reset spring (804) is connected in the middle of the limiting block (803). An unlocking electromagnet (805) is installed at the rear end of the limiting guide sleeve (802).

9. The vacuum painting device for automobile nameplates according to claim 1, characterized in that, A closed drying cylinder (9) is connected in the middle of the feeding guide cylinder (203). A plurality of electric heating tubes (903) are arranged around the middle of the closed drying cylinder (9). A plurality of annular heating fins (904) are arranged in parallel and uniformly in the vertical direction on the outer side of the electric heating tubes (903). When the plurality of car logo processing racks (5) slide down along the feeding guide cylinder (203) into the closed drying cylinder (9), they are located at the center of the inner side of the annular heating fins (904).

10. The vacuum painting device for automobile nameplates according to claim 9, characterized in that, The bottom of the closed drying cylinder (9) is provided with an air outlet (905), and an annular fan (906) is provided above the air outlet (905). Multiple air inlets (901) are evenly arranged around the middle of the side wall of the closed drying cylinder (9), and a filter screen (902) is provided in the middle of the air inlet (901).

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