Vacuum paint spraying device for automobile labels

Abstract

The invention relates to the technical field of automobile sign processing, in particular to an automobile sign vacuum paint spraying device which comprises a vacuum paint spraying barrel, a feeding guide barrel, a vacuum pump, a vacuum pump, a vacuum pump, a vacuum pump, a vacuum pump, a vacuum pump, a vacuum pump, a vacuum pump, a vacuum pump and a control system, and the vacuum pump is arranged on the outer side of the vacuum paint spraying barrel. The vacuum pump is arranged on the vacuum paint spraying barrel. The middle of the bottom of the vacuum paint spraying barrel is connected with a discharging guide barrel. Vehicle logos are fixed through the vehicle logo processing frames, a plurality of independent spaced closed spaces are formed in the feeding guide cylinder and the discharging guide cylinder through the closed top cover and the closed bottom cover, and the multiple vehicle logo processing frames are allowed to be sequentially filled in through an opening in the top end of the feeding guide cylinder in a sliding mode and slide downwards to the vacuum paint spraying cylinder along the feeding guide cylinder; and then the materials further slide into the discharging guide cylinder and are finally output one by one from the opening in the bottom end of the discharging guide cylinder, continuous feeding and discharging operation is achieved, frequent pressurization and decompression operation in a traditional batch processing mode is avoided, and the production efficiency and quality are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle logo processing, in particular to a vacuum painting device for automobile logos. Background Art

[0002] With the development of the automotive industry, the demand for high-quality and high-precision surface treatment is growing. As an important part of vehicle brand identification, the appearance and durability of car signs are directly related to brand image and user satisfaction. Although the traditional air spray method is widely used, it has many limitations when spraying fine parts such as car signs, such as difficulty in achieving uniform coating, susceptibility to environmental dust and environmental pollution caused by solvent volatilization. Therefore, vacuum painting technology has gradually become a more ideal solution.

[0003] However, existing vacuum painting systems usually adopt a batch processing method, that is, only a limited number of signs can be processed each time. This means that before loading a new batch of workpieces, the signs that have been sprayed must be taken out and re-vacuumed to prepare for the next operation. Each loading and unloading will cause the vacuum environment to be destroyed and the vacuum state needs to be re-established, which not only prolongs the time of each cycle, but may also have an adverse effect on the quality of the signs and the life of the equipment due to repeated pressure changes. This frequent decompression 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 the present invention is to propose a vacuum painting device for automobile signs to solve the problem that the existing vacuum painting equipment cannot achieve continuous processing, and each loading and unloading of materials requires cyclic decompression and pressurization, resulting in low overall production efficiency.

[0005] Based on the above purpose, the present invention provides a vacuum painting device for automobile signs, comprising a vacuum painting barrel, the outer side of which is connected to a main vacuum pump, and further comprising:

[0006] A feeding guide cylinder is connected and arranged in the middle of the top of the vacuum paint spray cylinder, a feeding guide cylinder is connected and arranged in the middle of the bottom of the vacuum paint spray cylinder, a plurality of 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 a plurality of 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;

[0007] An annular paint spraying frame is arranged around the inside of the vacuum paint spraying tube, and a plurality of atomizing nozzles are evenly arranged around the middle of the annular paint spraying frame in a circular shape;

[0008] A plurality of vehicle logo processing racks are nested on the inner sides of the loading guide cylinder and the unloading guide cylinder, and a closed top cover and a closed bottom cover are respectively connected to the upper and lower ends of the vehicle logo processing rack, and the sizes of the closed top cover and the closed bottom cover match those of the loading guide cylinder and the unloading guide cylinder. When the vehicle logo processing rack is nested and slid inside the loading guide cylinder or the unloading guide cylinder, a closed space is formed by the closed top cover and the closed bottom cover, and a plurality of vehicle logo processing racks are stacked end to end through the closed top cover and the closed bottom cover so as to slide downward along the loading guide cylinder to the vacuum paint spray 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 an interlocking positioning block and an interlocking positioning groove, the sizes of the interlocking positioning block and the interlocking positioning groove are matched with each other, the closed top cover is connected to the closed bottom cover through the interlocking positioning block and the interlocking positioning groove, and the middle of the interlocking positioning block and the interlocking positioning groove are cooperated with each other.

[0010] Furthermore, the interior of the vacuum paint spray tube is evenly arranged with a plurality of spaced closing plates along the vertical direction, and the plurality of spaced closing plates partition the interior of the vacuum paint spray tube into a plurality of spaced paint spray chambers, each of which is independently provided with an annular paint spray rack in the middle, and a spaced closing ring is provided through the center of the spaced closing plate.

[0011] Furthermore, a horizontal guide groove is provided in the middle of the spaced closed ring, a horizontal rack is slidably provided on the inner side of the horizontal guide groove, the outer end of the horizontal rack is connected with a synchronous translation frame, a translation telescopic rod is connected in the middle of the synchronous translation frame, and the translation telescopic rod drives all 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, a car logo clamp is connected to the top of 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 closed bottom cover, and the sizes of the rotating gear and the horizontal rack match each other.

[0013] Furthermore, a vertical conveying groove is provided at the lower end of the inner wall of the loading guide cylinder and the unloading guide cylinder, a conveying wheel is rotatably connected in the middle of the vertical conveying groove, a plurality of limit levers are evenly connected around the outer side of the conveying wheel, and a servo motor is connected in the middle of the conveying wheel.

[0014] Furthermore, a circulating conveying frame is provided above the loading guide cylinder and below the unloading guide cylinder, a rotating guide rail is provided around the middle of the circulating conveying frame, a rotating chain is provided around the middle of the rotating guide rail, a plurality of unit sealing cylinders are evenly connected around the outer side of the rotating guide rail, the unit sealing cylinders are slidably connected to the circulating conveying frame through the rotating guide rail, a loading conveying frame is provided above the top end of the loading guide cylinder, a pneumatic telescopic rod is provided in the middle of the loading conveying frame, a loading pressure plate is connected to the bottom end of the pneumatic telescopic rod, the rotating chain pulls and drives all the unit sealing cylinders to move synchronously along the rotating guide rail and pass in turn above the top of the loading guide cylinder and directly below the loading pressure plate, the sizes of the closed top cover and the closed bottom cover match with those of the unit sealing cylinder, and end openings are provided at both the upper and lower ends of the unit sealing cylinder.

[0015] Furthermore, a limiting guide sleeve is horizontally arranged in the middle of the end opening, a limiting block is slidably arranged on the inner side of the limiting guide sleeve, a reset spring is arranged in the middle connection 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 provided in the middle of the unloading guide cylinder, a plurality of electric heating tubes are surrounded in the middle of the closed drying cylinder, a plurality of annular heating fins are connected and evenly arranged in parallel in the vertical direction on the outer side of the electric heating tubes, and a plurality of vehicle logo processing frames are located at the inner center of the annular heating fins when they slide downward along the unloading guide cylinder to the inside of the closed drying cylinder.

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

[0018] Beneficial effects of the present invention: As can be seen from the above, the present invention provides a vacuum painting device for automobile signs, which fixes the car logo through a car logo processing frame, and uses a closed top cover and a closed bottom cover to form a plurality of independent spaced closed spaces in the loading guide cylinder and the unloading guide cylinder, allowing a plurality of car logo processing frames to slide and fill in through the top opening of the loading guide cylinder in turn, and slide down along the loading guide cylinder to the vacuum paint spray cylinder, and then further slide into the unloading guide cylinder, and finally output one by one from the bottom opening of the unloading guide cylinder, thereby realizing continuous loading and unloading operations, avoiding the frequent pressurization and decompression operations in the traditional batch processing method, so that the inside of the vacuum paint spray cylinder always maintains a stable low-pressure state, greatly improving production efficiency and quality, and since each car logo processing frame is an independent closed unit, when conveying along the loading guide cylinder or the unloading guide cylinder, a plurality of decompression conveying pipes and pressurization conveying pipes connected to the side wall can be gradually connected to achieve gentle pressure regulation, effectively reducing the impact of each loading and unloading on the overall vacuum environment, reducing the amplitude and frequency of pressure fluctuations, thereby reducing the workload of the main vacuum pump, extending the service life of the equipment, and also ensuring the consistency of the spraying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0022] Figure 3 It is a front structural schematic diagram of an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the side structure of an embodiment of the present invention;

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

[0025] Figure 6 It is a structural schematic diagram of a vehicle logo processing frame according to an embodiment of the present invention;

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

[0027] Figure 8This is a schematic structural diagram of an annular paint spraying stand according to an embodiment of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of a circulating conveyor frame according to an embodiment of the present invention;

[0029] Fig.10 It is a structural schematic diagram of a loading and conveying frame according to an embodiment of the present invention;

[0030] Fig.11 It is a structural schematic diagram of a unit sealing cylinder according to an embodiment of the present invention;

[0031] Fig.12 Schematic diagram of the structure of a closed drying cylinder according to an embodiment of the present invention.

[0032] The markings in the figure are:

[0033] 1. Vacuum paint spraying cylinder; 101. Main vacuum pump; 102. Main air pressure gauge; 103. Interval closing plate; 104. Interval paint spraying bin; 105. Annular paint spraying rack; 106. Atomizing nozzle; 107. Paint delivery pipe; 108. High-pressure pump; 2. Feeding guide cylinder; 201. Decompression delivery pipe; 203. Unloading guide cylinder; 204. Pressurization delivery pipe; 205. Auxiliary pressure gauge; 206. Solenoid switch valve; 207. Auxiliary vacuum pump; 208. Balanced air pump; 3. Vertical conveying trough; 301. Conveying wheel; 302. Limit lever; 303. Servo motor; 4. Interval closing ring; 401. Horizontal guide groove; 402. Horizontal rack; 403. Synchronous translation rack; 404. Translation telescopic rod; 5. Car logo processing rack; 501. Closed top cover; 5 02. Closed bottom cover; 503. Embossed positioning block; 504. Embossed positioning groove; 505. Connecting magnet; 6. Car logo fixture; 601. Rotating base; 602. Rotating gear; 603. Rack clearance groove; 7. Circular conveyor rack; 701. Rotating guide rail; 702. Rotating chain; 703. Driving sprocket; 704. Conveying motor; 705. Loading conveyor rack; 706. Pneumatic telescopic rod; 707. Loading pressure plate; 8. Unit sealing cylinder; 801. End opening; 802. Limiting guide sleeve; 803. Limiting block; 804. Reset spring; 805. Unlocking electromagnet; 9. Closed drying cylinder; 901. Air inlet; 902. Filter; 903. Electric heating tube; 904. Annular heating fin; 905. Air outlet; 906. Annular fan. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0035] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used 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 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, a vacuum painting device for automobile signs includes a vacuum painting tube 1, the outer side of the vacuum painting tube 1 is connected to a main vacuum pump 101, and further includes:

[0037] A feeding guide cylinder 2 is connected and arranged in the middle of the top of the vacuum paint spray cylinder 1, and a feeding guide cylinder 203 is connected and arranged in the middle of the bottom of the vacuum paint spray cylinder 1. A plurality of 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, and a plurality of pressure-reducing conveying pipes 204 are evenly arranged and connected in the middle of the side wall of the feeding guide cylinder 203 along the vertical direction.

[0038] The annular paint spraying frame 105 is disposed around the inside of the vacuum paint spraying tube 1, and a plurality of atomizing nozzles 106 are evenly disposed around the middle of the annular paint spraying frame 105 in a circular shape;

[0039] A plurality of vehicle logo processing racks 5 are nested on the inner side of the loading guide cylinder 2 and the unloading guide cylinder 203. A closed top cover 501 and a closed bottom cover 502 are respectively connected to the upper and lower ends of the vehicle logo processing rack 5. The sizes of the closed top cover 501 and the closed bottom cover 502 match those of the loading guide cylinder 2 and the unloading guide cylinder 203. When the vehicle 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. A plurality of vehicle logo processing racks 5 are stacked end to end through the closed top cover 501 and the closed bottom cover 502 to slide downward along the loading guide cylinder 2 to the vacuum paint spray cylinder 1 and further slide into the unloading guide cylinder 203.

[0040] In this embodiment, the device fixes the vehicle logo through the vehicle logo processing frame 5, and each vehicle logo processing frame 5 is connected to a closed top cover 501 and a closed bottom cover 502 at both ends, and the upper and lower ends of the vacuum paint spraying cylinder 1 are respectively connected to a loading guide cylinder 2 and a unloading guide cylinder 203. When the vehicle logo processing frame 5 is nested and slidably located 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 vehicle logo processing frames 5 are stacked end to end through the closed top cover 501 and the closed bottom cover 502 to slide down along the loading guide cylinder 2 to the vacuum paint spraying cylinder 1 and Further slide into the unloading guide cylinder 203, so that when multiple car logo processing racks 5 are transported along the loading guide cylinder 2 or the unloading guide cylinder 203, multiple independent spaced closed spaces can be formed to achieve the overall sealing of the vacuum paint spray cylinder 1. The outer side of the vacuum paint spray cylinder 1 is also connected to a main barometer 102, and the internal air pressure of the vacuum paint spray cylinder 1 is adjusted and controlled by the main vacuum pump 101 and the main barometer 102. The side walls of the loading guide cylinder 2 or the unloading guide cylinder 203 are respectively connected to multiple decompression conveying pipes 201 and pressurization conveying pipes 204, and the middle of the decompression conveying pipe 201 and the pressurization conveying pipe 204 are connected in sequence. An auxiliary pressure gauge 205 and an electromagnetic switch valve 206 are provided, and the outer ends of the pressure reducing conveying pipe 201 and the pressure increasing conveying pipe 204 are respectively connected with an auxiliary vacuum pump 207 and a balanced air pump 208, so that the vehicle logo processing rack 5 can be gradually decompressed or pressurized when it is conveyed along the loading guide cylinder 2 or the unloading guide cylinder 203, and multiple vehicle logo processing racks 5 can be slid into the loading guide cylinder 2 through the top opening of the loading guide cylinder 2 in sequence, and then multiple vehicle logo processing racks 5 are stacked end to end through the closed top cover 501 and the closed bottom cover 502 to slide down along the loading guide cylinder 2 to the vacuum paint spraying cylinder 1. Uniform vacuum painting processing can be carried out through the multiple atomizing nozzles 106 evenly arranged in a circle in the middle of the annular spray paint rack 105, and then output one by one through the bottom opening of the unloading guide cylinder 203, thereby realizing continuous loading and unloading processing, avoiding the frequent pressurization and decompression operations in the traditional batch processing method, and greatly improving production efficiency. Since each car logo processing rack 5 is an independent closed unit, when conveying along the loading guide cylinder 2 or the unloading guide cylinder 203, gentle pressure regulation can be gradually achieved through the multiple decompression conveying pipes 201 and the pressurization conveying pipes 204 connected to the side wall.This method 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 also ensuring the consistency of the spraying quality. At the same time, the car logo processing frame 5 is 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 frame can form a completely closed space during the movement. Multiple car logo processing frames 5 are stacked end to end, which further enhances the sealing performance of the entire system, so that the inside of the vacuum paint spray cylinder 1 always maintains a stable low-pressure state, which is beneficial 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 , Fig. 9 , Fig.10 , Fig.11 and Fig.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 an interlocking positioning block 503 and an interlocking positioning groove 504 that cooperate with each other. When stacking and conveying processing is performed, the closed top cover 501 can be interlocked with the closed bottom cover 502 through the interlocking positioning block 503 and the interlocking positioning groove 504, and at the same time, it is fixed by the magnetic adsorption of the connecting magnet 505 that is cooperatively provided in the middle of the interlocking positioning block 503 and the interlocking positioning groove 504, thereby improving the stability of stacking and conveying, which is beneficial to improving the stability and reliability of the overall processing of the device.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, preferably, the interior of the vacuum paint spray tube 1 of the device is provided with a plurality of spaced paint spray bins 104 through a plurality of spaced closed plates 103, and a spaced closed ring 4 is provided through the center of the spaced closed plate 103. When the vehicle logo processing frame 5 is stacked and conveyed, it passes through the spaced closed plate 103 through the spaced closed ring 4, and the sizes of the spaced closed ring 4 and the closed top cover 501 and the closed bottom cover 502 match each other, and an annular paint spray rack 105 is independently provided in the middle of each spaced paint spray bin 104. When painting, the closed top cover 501 and the closed bottom cover 502 are both embedded in the inner side of the spaced closed ring 4 for protection, and the plurality of spaced paint spray bins 104 can realize continuous processing of multiple multi-layer paint surfaces.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, preferably, the vehicle logo processing frame 5 of the device fixes the vehicle logo to be processed by a vehicle logo clamp 6, and the vehicle logo clamp 6 is rotatably connected to the closed bottom cover 502 through a rotating base 601. When spraying paint, the closed top cover 501 and the closed bottom cover 502 are both embedded in the inner side of the spaced closed ring 4. At this time, the translation telescopic rod 404 drives all the horizontal racks 402 to translate synchronously along the horizontal guide groove 401 through the synchronous translation frame 403, and then the horizontal rack 402 is inserted into the rotating base 601 and the middle through the rack yielding groove 603 and meshes with the rotating gear 602 to drive the vehicle logo to be processed to rotate through the rotating base 601 and the vehicle logo clamp 6, thereby helping to improve the uniformity of the spray painting process.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, preferably, a vertical conveying groove 3 is provided at the lower end of the inner wall of the loading guide cylinder 2 and the unloading guide cylinder 203 of the device, and a conveying wheel 301 is provided in the middle of the vertical conveying groove 3 for rotation, and a plurality of limit levers 302 are evenly connected and arranged around the outer side of the conveying wheel 301. When the servo motor 303 drives the conveying wheel 301 to rotate, all the limit levers 302 are driven to move synchronously, so that when the limit 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 lift and fix the vehicle logo processing frame 5, and when the limit lever 302 rotates to the vertical conveying groove 3, the vehicle logo processing frame 5 can continue to move downward, thereby realizing the control of the conveying work of the vehicle logo processing frame 5, so as to further adjust the conveying and processing of the vehicle logo.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, preferably, a circulating conveyor frame 7 is arranged 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, a rotary chain 702 is arranged around the middle of the rotary guide rail 701, and a plurality of unit sealing cylinders 8 are evenly arranged around the outer side of the rotary guide rail 701, and the unit sealing cylinder 8 is slidably connected to the circulating conveyor frame 7 through the rotary guide rail 701, and the sizes of the closed top cover 501 and the closed bottom cover 502 and the unit sealing cylinder 8 are mutually compatible. The upper and lower ends of the unit sealing cylinder 8 are both provided with end openings 801. At the same time, 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 feeding conveyor frame 705. A feeding pressing plate 707 is provided at the bottom of the pneumatic telescopic rod 706. When the rotary chain 702 pulls and drives all the unit sealing cylinders 8 to move synchronously along the rotary guide rail 701 to the top of the feeding guide cylinder 2 and directly below the feeding pressing plate 707, the pneumatic telescopic rod 706 can pass through the feeding The pressure plate 707 pushes the car logo processing frame 5 in the corresponding unit sealing cylinder 8 to slide downward to the loading guide cylinder 2, and at the same time, the unit sealing cylinder 8 on the circulating conveying frame 7 below is synchronously moved to just below the lower end of the unloading guide cylinder 203, so that the car logo processing frame 5 located at the bottom of the stack slides downward into the unit sealing cylinder 8, ensuring that the car logo processing frame 5 can continuously enter the vacuum paint spraying cylinder 1 from the loading guide cylinder 2, and output it from the unloading guide cylinder 203 to the circulating conveying frame 7 after spraying, forming a closed automated conveying chain. This continuity not only improves production efficiency, but also reduces manual intervention, reduces operation complexity, and realizes closed transportation before and after car logo processing, and ensures that each car logo processing frame 5 always remains in a completely closed space during the conveying process. Whether in the loading stage or the unloading stage, it can effectively prevent outside air and impurities from entering, maintain the purity of the vacuum environment, and also help reduce solvent volatilization, reduce the risk of environmental pollution, and reduce the impact of external factors on the quality of sign spraying.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, preferably, the device stores the vehicle logo processing frame 5 before and after processing through the unit sealing cylinder 8 to realize closed transportation before and after the vehicle logo processing, reducing the influence of external factors on the quality of the sign spraying, and a limiting guide sleeve 802 is horizontally arranged in the middle of the end opening 801, and a limiting block 803 is slidably arranged on the inner side of the limiting guide sleeve 802, and the vehicle logo processing frame 5 is placed in the unit sealing cylinder 8 through the limiting blocking of the limiting block 803, and a reset spring 804 is arranged in the middle connection of the limiting block 803, and an unlocking electromagnet 805 is installed at the rear end of the limiting guide sleeve 802, so that the magnetic limiting block 803 can be attracted to move backward by the unlocking electromagnet 805 to unlock the vehicle logo processing frame 5, so as to facilitate the loading and unloading of the vehicle logo processing frame 5.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, preferably, a closed drying cylinder 9 is connected in the middle of the unloading guide cylinder 203 of the device, and a plurality of electric heating tubes 903 are surrounded in the middle of the closed drying cylinder 9. The outer sides of the electric heating tubes 903 are evenly arranged in parallel in the vertical direction and connected with a plurality of annular heating fins 904. When the plurality of vehicle logo processing frames 5 slide downward along the unloading guide cylinder 203 to the inside of the closed drying cylinder 9, they are located at the inner center of the annular heating fins 904, and the annular fan 906 rotates, thereby driving the airflow to pass through the filter screen 902 of the air inlet 901 and then enter the closed drying cylinder 9, and then flow downward through the annular heating fins 904 to the air outlet 905. In this process, the airflow is heated by the electric heating tubes 903 and the annular heating fins 904, and is dried after passing through the vehicle logo.

[0048] When in use, first connect the corresponding pipelines of the device, then fix the corresponding car logo on the car logo fixture 6, and embed the car logo processing frame 5 as a whole into the unit sealing cylinder 8. When processing, the conveying motor 704 drives the driving sprocket 703 to rotate, and then drives the sprocket 703 to pull and drive the rotating chain 702 to move. Through the traction of the rotating chain 702, all the unit sealing cylinders 8 are synchronously moved along the rotating 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 through the feeding pressure plate 707 to slide downward to the feeding guide cylinder 2, so that multiple car logo processing frames 5 can pass through The closed top cover 501 and the closed bottom cover 502 are stacked end to end to slide down along the feeding guide tube 2 to the vacuum paint spraying tube 1 and further slide into the unloading guide tube 203. When the car logo processing frame 5 is stacked and transported, it passes through the interval closing ring 4 through the interval closing plate 103. When spraying paint, the closed top cover 501 and the closed bottom cover 502 are both embedded in the inner side of the interval closing ring 4 for protection. Then, the vacuum painting process is performed through a plurality of atomizing nozzles 106 evenly arranged in a circular shape in the middle of the annular spraying frame 105. The atomizing nozzle 106 is connected to the high-pressure pump 108 through the paint delivery pipe 107. The paint is pumped into the paint through the paint delivery pipe by the high-pressure pump 108. 107 is transported and directly pressurized to the required pressure, and then released through the small hole nozzle of the atomizing nozzle 106. At the nozzle, due to the sudden pressure drop, the paint will expand rapidly and form fine mist particles, which will be contaminated and covered on the car logo. At the same time, the translation telescopic rod 404 drives all horizontal racks 402 to translate synchronously along the horizontal guide groove 401 through the synchronous translation frame 403. The horizontal rack 402 and the rotating gear 602 are meshed with each other to drive the car logo to be processed to rotate through the rotating base 601 and the car logo fixture 6. Then, multiple car logo processing frames 5 slide downward along the unloading guide cylinder 203 to the inside of the closed drying cylinder 9 and are located inside the annular heating fins 904. At the side center, the rotation of the fan blades drives the air flow through the filter screen 902 of the air inlet 901 and then enters the closed drying cylinder 9, and then flows downward to the air outlet 905 through the annular heating fins 904. In this process, the air flow is heated by the electric heating tube 903 and the annular heating fins 904, and is dried after flowing through the vehicle logo. Finally, the unit sealing cylinder 8 on the circulating conveying rack 7 below is synchronously moved to the bottom of the lower end of the unloading guide cylinder 203, so that the vehicle logo processing rack 5 located at the bottom of the stack slides downward into the unit sealing cylinder 8, ensuring that the vehicle logo processing rack 5 continuously enters the vacuum spray paint cylinder 1 from the loading guide cylinder 2, thereby realizing the continuous processing of vacuum spray paint.

[0049] The automobile logo vacuum painting device provided by the present invention fixes the vehicle logo through the vehicle logo processing frame 5, and uses the closed top cover 501 and the closed bottom cover 502 to form multiple independent spaced closed spaces in the loading guide cylinder 2 and the unloading guide cylinder 203, allowing multiple vehicle logo processing frames 5 to slide and fill in through the top opening of the loading guide cylinder 2 in turn, and slide down along the loading guide cylinder 2 to the vacuum painting cylinder 1, and then further slide into the unloading guide cylinder 203, and finally output one by one from the bottom opening of the unloading guide cylinder 203, thereby realizing continuous loading and unloading operations and avoiding the frequent pressurization and decompression operations in the traditional batch processing method. , so that the inside of the vacuum paint spray cylinder 1 always maintains a stable low-pressure state, greatly improving the production efficiency and quality, and because each car logo processing rack 5 is an independent closed unit, when conveying along the loading guide cylinder 2 or the unloading guide cylinder 203, gentle pressure regulation can be gradually achieved through multiple pressure-reducing conveying pipes 201 and pressure-increasing conveying pipes 204 connected to the side wall, effectively reducing the impact of each loading and unloading on the overall vacuum environment, reducing 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 also ensuring the consistency of the spraying quality.

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

Claims

1. A vacuum painting device for automobile labels, comprising a vacuum painting barrel (1), wherein the outer side of the vacuum painting barrel (1) is connected to a main vacuum pump (101), characterized in that: Also includes: A feeding guide cylinder (2) is connected and arranged in the middle of the top of the vacuum paint spray cylinder (1); a feeding guide cylinder (203) is connected and arranged in the middle of the bottom of the vacuum paint spray cylinder (1); a plurality of 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; a plurality of pressure-reducing conveying pipes (204) are evenly arranged and connected in the middle of the side wall of the feeding guide cylinder (203); An annular paint spray rack (105) is disposed around the interior of the vacuum paint spray barrel (1), and a plurality of atomizing nozzles (106) are evenly disposed around the middle of the annular paint spray rack (105) in a circular shape; A plurality of vehicle logo processing racks (5) are nested on the inner sides of the loading guide cylinder (2) and the unloading guide cylinder (203); the upper and lower ends of the vehicle logo processing racks (5) are respectively connected with a closed top cover (501) and a closed bottom cover (502); the sizes of the closed top cover (501) and the closed bottom cover (502) match the dimensions of the loading guide cylinder (2) and the unloading guide cylinder (203); when the vehicle logo processing racks (5) are nested and slidably located on the inner sides of 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); the plurality of vehicle logo processing racks (5) are stacked end to end by the closed top cover (501) and the closed bottom cover (502) so as to slide downward along the loading guide cylinder (2) to the vacuum spray paint cylinder (1) and further slide into the unloading guide cylinder (203).

2. The automobile sign vacuum painting device 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 an interlocking positioning block (503) and an interlocking positioning groove (504) in cooperation with each other. The sizes of the interlocking positioning block (503) and the interlocking positioning groove (504) are mutually matched. The closed top cover (501) is connected to the closed bottom cover (502) by the interlocking positioning block (503) and the interlocking positioning groove (504). The middle of the interlocking positioning block (503) and the interlocking positioning groove (504) are both provided with a connecting magnet (505).

3. The automobile sign vacuum painting device according to claim 1, characterized in that: The interior of the vacuum paint spray barrel (1) is evenly arranged with a plurality of spaced closed plates (103) in a vertical direction, and the plurality of spaced closed plates (103) partition the interior of the vacuum paint spray barrel (1) into a plurality of spaced paint spray chambers (104), each spaced paint spray chamber (104) is independently provided with an annular paint spray rack (105) in the middle, and a spaced closed collar (4) is provided through the center of the spaced closed plates (103).

4. The automobile sign vacuum painting device according to claim 3 is characterized in that: A horizontal guide groove (401) is arranged in the middle of the spacer closed collar (4), a horizontal rack (402) is slidably arranged inside the horizontal guide groove (401), the outer end of the horizontal rack (402) is connected to a synchronous translation frame (403), a translation telescopic rod (404) is connected in the middle of the synchronous translation frame (403), and the translation telescopic rod (404) drives all the horizontal racks (402) to translate synchronously along the horizontal guide groove (401) through the synchronous translation frame (403).

5. The automobile sign vacuum painting device according to claim 4, characterized in that: A rotating base (601) is arranged at the center of the closed bottom cover (502), a vehicle logo clamp (6) is connected to the top of the rotating base (601), and the vehicle 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 clearance groove (603) is horizontally arranged in the middle of the closed bottom cover (502), and the dimensions of the rotating gear (602) and the horizontal rack (402) are matched with each other.

6. The automobile sign vacuum painting device according to claim 1, characterized in that: A vertical conveying groove (3) is provided at the lower end of the inner side wall of the loading guide cylinder (2) and the unloading guide cylinder (203); a conveying wheel (301) is rotatably connected in the middle of the vertical conveying groove (3); a plurality of limit levers (302) are evenly connected and arranged around the outer side of the conveying wheel (301); and a servo motor (303) is connected in the middle of the conveying wheel (301).

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

8. The automobile sign vacuum painting device according to claim 7, characterized in that: A limit guide sleeve (802) is horizontally arranged in the middle of the end opening (801), a limit block (803) is slidably arranged on the inner side of the limit guide sleeve (802), a return spring (804) is arranged in the middle of the limit block (803), and an unlocking electromagnet (805) is installed at the rear end of the limit guide sleeve (802).

9. The automobile sign vacuum painting device according to claim 1, characterized in that: A closed drying cylinder (9) is connected in the middle of the material unloading guide cylinder (203), a plurality of electric heating tubes (903) are arranged around the middle of the closed drying cylinder (9), and a plurality of annular heating fins (904) are evenly arranged and connected in parallel along the vertical direction on the outer side of the electric heating tubes (903), and a plurality of vehicle logo processing racks (5) are located at the inner center of the annular heating fins (904) when sliding downward along the material unloading guide cylinder (203) to the inside of the closed drying cylinder (9).

10. The automobile sign vacuum painting device according to claim 9, characterized in that: An air outlet (905) is arranged around the bottom of the closed drying cylinder (9), an annular fan (906) is arranged around the top of the air outlet (905), a plurality of 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 arranged in the middle of the air inlet (901).

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