Coating production line

Abstract

The coating production line comprises a double-station powder spraying room, a transfer hanging mechanical arm, a conveying system and a curing oven, the double-station powder spraying room is provided with two powder spraying mechanisms, the powder spraying direction of the first powder spraying mechanism is opposite to that of the second powder spraying mechanism, and after the double-station powder spraying room sprays powder on external workpieces, the transfer hanging mechanical arm is used for transferring the powder to the curing oven. According to the double-station powder spraying room, the design that the powder spraying directions of the double-station powder spraying room are opposite is adopted, the space can be effectively utilized, mutual interference in the powder spraying process is reduced, the coating efficiency is improved, and the coating quality is improved. The powder spraying efficiency and uniformity are improved, the harm of powder to workers is reduced, and the product quality is ensured. The curing oven is provided with a double-side opening and closing oven door corresponding to a double-side opening and closing oven door of the double-station powder spraying room, the two sides of the curing oven and the two sides of the double-station powder spraying room can be used for feeding and discharging, and the production efficiency of the coating production line is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of painting equipment, and particularly to a painting production line. Background Art

[0002] A painting production line is an automated production line integrating processes such as pretreatment, powder spraying, and heating and curing. The workpieces are transported between various stations through a conveying system to complete the painting operation. In traditional painting production lines, there are many manual operations. In traditional painting production lines, many processes still need to be manually completed, such as the handling of workpieces and the brushing of coatings; the degree of mechanization is low. Although some processes may use some mechanized equipment, overall, the degree of mechanization is relatively low and the production efficiency is limited; the environmental protection measures are insufficient. Traditional painting production lines consider less about environmental protection, and the treatment of pollutants such as waste gas and waste liquid is often not sufficient. Utility Model Content

[0003] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a painting production line. The painting production line is provided with two powder spraying mechanisms and the powder spraying directions of the two powder spraying mechanisms are opposite, which can achieve better uniform feeding for external workpieces, has high production efficiency, and can reduce the harm of dust to the human body by setting up up and down. The double-station powder spraying booth and the curing furnace are respectively provided with openings on both sides, and both openings on both sides can be used for loading and unloading, so the production line has high flexibility and can improve production efficiency.

[0004] To achieve the above purpose, the technical solution adopted by the present utility model includes a double-station powder spraying booth, a transfer manipulator, a conveying system, and a curing furnace. The double-station powder spraying booth is provided with two powder spraying mechanisms, and the powder spraying directions of the first powder spraying mechanism and the second powder spraying mechanism are opposite. The powder spraying mechanism can be a spray gun. The spray gun can be a spray gun housing with a nozzle end and an inlet end; the inlet end has a powder inlet connected to a powder supply source to be sprayed, and the nozzle has an electrode and a powder outlet. The powder is sprayed onto the surface of an object through the powder outlet, and the coating particles are charged through the electrostatic principle and adsorbed on the surface of the object to be coated, so as to achieve an efficient and uniform painting effect.

[0005] This layout of the two powder spraying mechanisms helps to reduce cross - contamination of powder flying, maintain the cleanliness of the powder spraying environment, and may further improve the powder utilization rate by optimizing the air flow design. After the external workpieces are powder - sprayed in the double - station powder spraying booth, the powder - sprayed external workpieces are transferred and hung onto the conveying system. The conveying system transports the powder - sprayed external workpieces into the curing furnace to complete the painting. After the double - station powder spraying booth finishes powder spraying, the conveying system can use a transfer manipulator to transfer and hang onto the conveying system, reducing manual intervention and improving operation safety and efficiency. The conveying system adopts structures such as chain conveying, roller conveying, or hanging conveying, which can stably and continuously transport the powder - sprayed workpieces from the powder spraying booth to the curing furnace to ensure that the coating is not damaged during transportation.

[0006] The coating production line also includes an up - and - down flipping chain passing through the double - station powder spraying booth and hangers arranged on the up - and - down flipping chain. External workpieces are loaded onto the up - and - down flipping chain. The up - and - down flipping chain drives the external workpieces on the hangers into the double - station powder spraying booth. The angle of the up - and - down flipping chain can be from 90° to 180°. After the first powder spraying mechanism sprays the external workpieces for the first time, the up - and - down flipping chain flips the external workpieces, and the second powder spraying mechanism sprays the external workpieces for the second time. The design of the double - station powder spraying booth combined with the up - and - down flipping chain realizes continuous and double - sided powder spraying of workpieces, greatly improving the painting efficiency. The introduction of the automatic up - and - down flipping chain reduces manual intervention and labor intensity and lowers the labor cost.

[0007] Both sides of the double - station powder spraying booth that are far away from each other are provided with opening and closing doors. The opening and closing doors can be automatic doors, which are automatically opened and closed by a motor drive, with convenient operation and labor saving. The up - and - down flipping chain extends along the opening direction of the opening and closing doors on both sides of the double - station powder spraying booth. Both sides of the up - and - down chain can be used for loading and unloading. This design further enhances the flexibility of the production line. According to production requirements, operators can choose to load and unload workpieces from either side of the powder spraying booth, thereby optimizing the production process, reducing waiting time and labor costs.

[0008] Both sides of the curing furnace are provided with opening and closing furnace doors. The opening and closing furnace doors on both sides of the curing furnace can be made of steel or aluminum - plastic board heat - insulating doors. These materials can effectively block the heat transfer between indoors and outdoors and maintain the stability of the indoor temperature. Both sides of the opening and closing furnace doors can be used for loading and unloading. Since both sides of the opening and closing furnace doors can be used for loading and unloading, operators can flexibly choose which side to load and unload according to the layout of the production line, the flow direction of workpieces, and the current production status. This reduces the waiting time and the risk of production line congestion, improves the overall production efficiency, and realizes the optimal utilization of space.

[0009] The conveying system includes conveying guide rails running through both sides of the curing furnace. A flat-bed working cart is movably arranged on the conveying guide rails and moves cyclically along the conveying guide rails. External workpieces are hung on the flat-bed working cart. After the external workpieces are powder-sprayed in the double-station powder spraying booth, the flat-bed working cart drives them to enter the curing furnace from the opening on one side of the curing furnace for curing of the workpiece powder, and then completes unloading from the opening on the other side of the curing furnace. Workpieces can be loaded and unloaded from either side of the curing furnace to adapt to different production layouts and technological processes.

[0010] Heat-insulating doors are installed at the openings on both sides of the curing furnace. The main function of the heat-insulating doors is to prevent direct heat exchange between the high-temperature environment inside the curing furnace and the low-temperature environment outside. This helps to maintain the stability of the temperature inside the furnace, ensures that the workpieces are evenly heated during the curing process, and achieves the expected curing effect. By reducing heat loss, the heat-insulating doors can significantly reduce the energy consumption of the curing furnace. When loading and unloading operations are not required, the heat-insulating doors are closed tightly, reducing unnecessary heat loss and improving energy utilization efficiency.

[0011] Thick rock wool boards are provided on the inner side walls of the curing furnace. The thick rock wool boards are preferably 150 mm to 200 mm to ensure good heat insulation performance and structural stability at high temperatures. The thick rock wool boards can more effectively block heat loss, ensure the stability of the temperature inside the curing furnace. By reducing heat loss, the energy consumption required during the operation of the curing furnace will be greatly reduced, which helps to reduce production costs and improve economic benefits. The high-temperature environment inside the curing furnace may damage the equipment. The thick rock wool boards, as a heat insulation barrier, can protect the equipment from the influence of high temperatures and extend its service life.

[0012] The painting production line also includes a heating chamber, which is connected to the curing furnace to provide heat for the curing furnace. To facilitate heat transfer and reduce heat loss, the heating chamber is usually arranged adjacent to the curing furnace. This can ensure that heat can be quickly and effectively transferred into the curing furnace, improving the heating efficiency. The heating chamber provides heat for the curing furnace to ensure that the workpieces can reach and maintain the required temperature conditions during the curing process, so as to achieve high-quality painting effects.

[0013] The heating chamber includes a furnace body, a burner used in conjunction with the furnace body, and a blower that transmits the air heated by the burner into the curing furnace. The blower is arranged on the other outer side of the furnace body in the same direction as the burner. The heating chamber ensures the stable supply of heat and maximizes the transmission efficiency by precisely controlling the combustion efficiency of the burner and the wind force of the blower. Since the blower is in the same direction as the burner, the flow resistance of the hot air in the furnace body can be minimized, improving the heating efficiency.

[0014] An air filter plate is arranged between the furnace body and the curing furnace. The air in the furnace body extracted by the blower is filtered by the air filter plate and then input into the curing furnace. The air filter plate is installed on the air outlet through a fixed clamping seat. The flame and heat generated by the burner may drive the movement of impurities in the surrounding air. If these impurities directly enter the curing furnace without filtration, they may contaminate the surface of the workpiece and affect the painting quality. Therefore, the air filter plate can effectively purify the air entering the curing furnace and ensure the painting effect of the workpiece.

[0015] The beneficial effects of the present utility model: The double-station powder spraying booth design is adopted, in which the powder spraying directions of the two stations are opposite, and the powder spraying efficiency and the uniformity of the coating are significantly improved. In addition, in order to match the efficient operation of the double-station powder spraying booth, the curing furnace is specially equipped with double-sided opening and closing furnace doors, and the positions of these opening and closing furnace doors correspond one by one to the double-sided opening and closing doors of the powder spraying booth. Such a design enables convenient loading and unloading operations on either side of the powder spraying booth, and continuous production processes can be achieved without moving the equipment or workpieces. This flexibility greatly improves the overall efficiency and production capacity of the painting production line, making the production process smoother and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the double-station powder spraying booth of the present utility model;

[0018] Figure 3 is a cross-sectional structural schematic diagram of the present utility model;

[0019] Figure 4 is a structural schematic diagram of the curing furnace of the present utility model;

[0020] The reference numerals include:

[0021] 1. Double-station powder spraying booth; 2. Conveyor system; 3. Curing furnace; 4. First powder spraying mechanism; 5. Second powder spraying mechanism; 7. Up-and-down flipping chain; 8. Opening and closing door; 9. Opening and closing furnace door; 10. Conveyor guide rail; 11. Flat working vehicle; 12. Thick rock wool board; 13. Heating chamber; 14. Furnace body; 15. Burner; 16. Blower; 17. Air filter plate; 100. Transfer and hanging manipulator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the embodiments does not limit the present utility model.

[0023] Please refer to Figures 1 to 4As shown in the figure, a coating production line of the present utility model includes a double-station powder spraying booth 1, a transfer manipulator 100, a conveying system 2, and a curing furnace 3. The double-station powder spraying booth 1 is provided with two powder spraying mechanisms. The powder spraying directions of the first powder spraying mechanism 4 and the second powder spraying mechanism 5 are opposite. This layout helps to reduce cross-contamination of powder flying, maintain the cleanliness of the powder spraying environment, and at the same time, by optimizing the air flow design, further improve the powder utilization rate. After the double-station powder spraying booth 1 powders the external workpiece, it transfers the powdered external workpiece to the conveying system 2. The conveying system 2 conveys the powdered external workpiece into the curing furnace 3 to complete the coating. After the double-station powder spraying booth 1 finishes powder spraying, the conveying system 2 can use the automatic transfer manipulator 100 to transfer it to the conveying system 2, reducing manual intervention, improving the operation safety and efficiency. The conveying system 2 adopts structures such as chain conveying, roller conveying, or hanging conveying, etc., and can smoothly and continuously convey the powdered workpiece from the powder spraying booth to the curing furnace 3 to ensure that the coating is not damaged during the conveying process.

[0024] The coating production line further includes an up-and-down flipping chain 7 passing through the double-station powder spraying booth 1 and a hanger provided on the up-and-down flipping chain 7. The external workpiece is loaded onto the up-and-down flipping chain 7. The angle of the up-and-down flipping chain 7 can be from 90° to 180°. The up-and-down flipping chain 7 drives the external workpiece on the hanger into the double-station powder spraying booth 1. After the first powder spraying mechanism 4 sprays the external workpiece for the first time, the up-and-down flipping chain 7 flips the external workpiece, and the second powder spraying mechanism 5 sprays the external workpiece for the second time. The combination of the double-station powder spraying booth 1 and the design of the up-and-down flipping chain 7 realizes continuous and double-sided powder spraying of the workpiece, greatly improving the coating efficiency. The introduction of the automatic up-and-down flipping chain 7 reduces manual intervention and labor intensity and reduces labor costs.

[0025] On both sides of the double-station powder spraying booth 1 that are far away from each other, there are opening and closing doors 8. The opening and closing doors 8 can be automatic doors, which are automatically opened and closed by a motor drive, with convenient operation and labor saving. The upper and lower flipping chains 7 extend along the opening direction of the opening and closing doors 8 on both sides of the double-station powder spraying booth 1. Both sides of the upper and lower flipping chains 7 can be used for loading and unloading. The external workpiece is first placed at the starting position of the upper and lower flipping chains 7 and firmly fixed by a fixture or a lifting device. The upper and lower flipping chains 7 drive the workpiece to slowly enter the double-station powder spraying booth 1; during this process, the position and state of the workpiece can be monitored by a sensor or a vision recognition system. When the workpiece reaches below the powder spraying mechanism, the powder spraying mechanism starts to spray powder on one side of the workpiece. Parameters such as the powder spraying amount, powder spraying speed, and powder spraying angle can be adjusted according to the specific requirements of the workpiece. After the powder spraying is completed, the upper and lower flipping chains 7 start to move, flipping the workpiece to the other side. The flipped workpiece continues to move below the second powder spraying mechanism 5 for the second powder spraying. At this time, the second powder spraying mechanism 5 sprays powder on the other side of the workpiece to achieve uniform double-sided coating. After the double-sided powder spraying is completed, the workpiece continues to move to the powder spraying booth exit along with the upper and lower flipping chains 7 and is transferred to the subsequent conveying system 2 to be prepared for curing treatment in the curing furnace 3. This design further enhances the flexibility of the production line. According to the production requirements, the operator can choose to perform the loading and unloading operations of the workpiece from either side of the powder spraying booth, thereby optimizing the production process and reducing the waiting time and labor costs.

[0026] On both sides of the curing furnace 3 that are far away from each other, there are opening and closing furnace doors 9. The opening and closing furnace doors 9 on both sides of the curing furnace 3 can be made of steel or aluminum-plastic board heat-insulating doors. These materials can effectively block the heat transfer between the inside and outside of the room and maintain the stability of the indoor temperature. Both sides of the opening and closing furnace doors 9 can be used for loading and unloading. Since both sides of the opening and closing furnace doors 9 can be used for loading and unloading, the operator can flexibly choose from which side to perform the loading and unloading operations according to the layout of the production line, the flow direction of the workpiece, and the current production status. This reduces the waiting time and the risk of production line congestion, improves the overall production efficiency, and realizes the optimal utilization of space.

[0027] The conveying system 2 includes a conveying guide rail 10 that penetrates both sides of the curing furnace 3. A flat working cart 11 is movably arranged on the conveying guide rail 10. The flat working cart 11 moves cyclically along the conveying guide rail 10. The external workpiece is transferred onto the flat working cart 11 by a certain method (such as a manipulator, manual labor, etc.). After the external workpiece is transferred onto the flat working cart 11, the flat working cart 11 drives the external workpiece after powder spraying in the double-station powder spraying booth 1 to enter the curing furnace 3 from one opening on one side of the curing furnace 3 for curing the workpiece powder, and then completes the unloading from the other opening on the other side of the curing furnace 3. The workpiece can be loaded and unloaded from either side of the curing furnace 3 to adapt to different production layouts and technological processes.

[0028] Heat preservation doors are installed on both sides of the curing furnace 3 with openings. The main function of the heat preservation doors is to prevent direct heat exchange between the high-temperature environment inside the curing furnace 3 and the low-temperature environment outside. This helps to maintain the stability of the temperature inside the furnace, ensuring that the workpieces are evenly heated during the curing process and achieving the desired curing effect. By reducing heat loss, the heat preservation doors can significantly reduce the energy consumption of the curing furnace 3. When the loading and unloading operations are not required, the heat preservation doors are closed tightly, reducing unnecessary heat loss and improving the energy utilization efficiency.

[0029] Thick rock wool boards 12 are provided on the inner side walls of the curing furnace 3. The thick rock wool boards 12 are preferably 150 mm to 200 mm to ensure good heat preservation performance and structural stability at high temperatures. The thick rock wool boards 12 can more effectively block heat loss, ensuring the stability of the temperature inside the curing furnace 3. By reducing heat loss, the energy consumption required during the operation of the curing furnace 3 will be greatly reduced, which helps to reduce production costs and improve economic benefits. The high-temperature environment inside the curing furnace 3 may cause damage to the equipment. The thick rock wool boards 12, as a layer of heat insulation barrier, can protect the equipment from the influence of high temperature and extend its service life.

[0030] The coating production line further includes a heating chamber 13. The heating chamber is connected to the curing furnace 3 to provide heat for the curing furnace 3. To facilitate heat transfer and reduce heat loss, the heating chamber 13 is usually arranged adjacent to the curing furnace 3. This can ensure that heat can be quickly and effectively transferred into the curing furnace 3, improving the heating efficiency. The heating chamber 13 provides heat for the curing furnace 3 to ensure that the workpieces can reach and maintain the required temperature conditions during the curing process, thereby achieving a high-quality coating effect.

[0031] The heating chamber 13 includes a furnace body 14, a burner 15 used in conjunction with the furnace body 14, and a blower 16 that transmits the air heated by the burner 15 into the curing furnace 3. The blower 16 is arranged on the other outer side of the furnace body 14 in the same direction as the burner 15. The heating chamber 13 ensures the stable supply of heat and maximizes the transmission efficiency by precisely controlling the combustion efficiency of the burner 15 and the air volume of the blower 16. Since the blower 16 is in the same direction as the burner 15, the flow resistance of the hot air inside the furnace body 14 can be minimized, improving the heating efficiency. Temperature sensors and control systems can be used to dynamically adjust the combustion efficiency and the air volume of the blower 16 to maintain the stability of the temperature inside the furnace and avoid the occurrence of local overheating or overcooling phenomena, further improving the heating effect and the coating quality of the workpieces.

[0032] An air filter plate 17 is provided between the furnace body 14 and the curing furnace 3. The air in the furnace body 14 extracted by the blower 16 is filtered by the air filter plate 17 and then input into the curing furnace 3. The air filter plate 17 is installed on the air outlet through a fixed clamping seat. Installing the air filter plate 17 with a fixed clamping seat is not only simple and fast in the installation process, but also convenient for subsequent cleaning, replacement and maintenance work. The flame and heat generated by the burner 15 may drive the movement of impurities in the surrounding air. If these impurities directly enter the curing furnace 3 without filtration, they may contaminate the surface of the workpiece and affect the painting quality. Therefore, the air filter plate 17 can effectively purify the air entering the curing furnace 3 and ensure the painting effect of the workpiece.

[0033] The rest of this embodiment is the same as that of the first embodiment. For the features not explained in this embodiment, the explanations of the first embodiment are adopted and will not be elaborated here.

[0034] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A coating production line, comprising a double-station powder spraying room (1), a transfer and hanging robot (100), a conveying system (2) and a curing oven (3), characterized in that: The double-station powder spraying room (1) is provided with two powder spraying mechanisms, the first powder spraying mechanism (4) and the second powder spraying mechanism (5) have opposite powder spraying directions, the transfer robot is used to transfer and hang the external workpiece after powder spraying in the double-station powder spraying room (1) to the conveying system (2), and the conveying system (2) conveys the external workpiece after powder spraying in the double-station powder spraying room (1) into the curing furnace (3) for curing treatment.

2. A coating production line according to claim 1, characterized in that: The coating production line further comprises an up-and-down turning chain (7) running through the double-station powder spraying room (1), and a sling arranged on the up-and-down turning chain (7), wherein the sling is used to hang an external workpiece, and the up-and-down turning chain (7) drives the external workpiece on the sling to enter the double-station powder spraying room (1). After the first powder spraying mechanism (4) performs a first powder spraying on the external workpiece, the up-and-down turning chain (7) turns the external workpiece over, and the second powder spraying mechanism (5) performs a second powder spraying on the external workpiece.

3. A coating production line according to claim 2, characterized in that: The double-station powder spraying room (1) is provided with opening and closing doors (8) on two sides away from each other, and the up-down turning chain (7) is arranged along the openings of the opening and closing doors (8) on both sides of the double-station powder spraying room (1) and extends in the same direction, and both sides of the up-down turning chain (7) can be used for loading and unloading materials.

4. A coating production line according to claim 1, characterized in that: The curing furnace (3) is provided with opening and closing furnace doors (9) on two sides away from each other, and the opening and closing furnace doors (9) on both sides of the curing furnace (3) can be used for loading and unloading materials.

5. A coating production line according to claim 1, characterized in that: The conveying system (2) comprises a conveying rail (10) penetrating the curing furnace (3), a flatbed work vehicle (11) being movably arranged on the conveying rail (10), the flatbed work vehicle (11) cyclically reciprocating along the conveying rail (10), the flatbed work vehicle (11) driving the external workpiece after powder spraying in the double-station powder spraying room (1) to enter the curing furnace (3) from an opening on one side of the curing furnace (3) for curing of the workpiece powder, and then unloading from an opening on the other side of the curing furnace (3) to complete the unloading.

6. A coating production line according to claim 5, characterized in that: Insulation doors are installed on the openings on both sides of the curing furnace (3).

7. A coating production line according to claim 6, characterized in that: A thick rock wool board (12) is provided on the inner side wall of the curing furnace (3).

8. A coating production line according to claim 1, characterized in that: The coating production line further comprises a heating chamber (13), which is connected to the curing furnace (3) to provide heat for the curing furnace (3).

9. A coating production line according to claim 8, characterized in that: The heating chamber (13) comprises a furnace body (14), a burner (15) used in conjunction with the furnace body (14), and a fan (16) for transmitting air heated by the burner (15) to the curing furnace (3).

10. A coating production line according to claim 9, characterized in that: An air filter plate (17) is provided between the furnace body (14) and the curing furnace (3), and the air in the furnace body (14) extracted by the fan (16) is filtered through the air filter plate (17) and then input into the curing furnace (3).

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