Water-based paint spraying line

Abstract

The utility model discloses a water-based paint spraying line. According to the workpiece machining process, the device sequentially comprises a pre-deoiling section, a main deoiling section, a pre-washing section, a first washing section, a second washing section, a chromium-free purification section, a third washing section, a clear water direct spraying section, a dripping section, a moisture drying tunnel, a first natural cooling section, an electrostatic powder spraying chamber, a primer spraying chamber, a primer leveling chamber, a finish paint spraying chamber, a finish paint leveling chamber and a curing drying tunnel. A second natural cooling section; according to the water-based paint spraying line, pre-oil removal and main oil removal are matched, and oil removal is thorough; multi-section washing guarantees workpiece cleanness; chromium-free purification is environmentally friendly, and corrosion resistance is improved; priming paint and finishing paint are reasonably sprayed, and the quality of the coating is guaranteed through an infrared preheating furnace and a leveling chamber; the finish paint spray booths are symmetrically arranged, the production efficiency is improved, and all links cooperate to ensure high quality of products.

Description

Technical Field

[0001] This utility model relates to the field of industrial processing technology, and in particular to a water-based spray painting line. Background Technology

[0002] In the industrial manufacturing sector, workpiece surface treatment is crucial to product quality and performance. Traditional spray painting lines have many drawbacks, such as incomplete degreasing affecting subsequent processes, poor water washing leading to residual impurities, and chromium purification causing environmental harm. To address these issues and improve product quality, production efficiency, and environmental protection, this water-based spray painting line technology solution has emerged, aiming to comprehensively optimize the workpiece painting process and meet the needs of modern industrial production. Utility Model Content

[0003] The purpose of this invention is to provide a water-based spray painting line to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0005] A water-based spray painting line, in sequence according to the workpiece processing flow, includes a pre-degreasing section, a main degreasing section, a pre-washing section, a first washing section, a second washing section, a chromium-free purification section, a third washing section, a direct water spraying section, a dripping section, a moisture drying tunnel, a first natural cooling section, an electrostatic powder spraying chamber, a primer spraying chamber, a primer leveling chamber, a topcoat spraying chamber, a topcoat leveling chamber, a curing tunnel, and a second natural cooling section.

[0006] Preferably, there are two topcoat spray booths, which are arranged symmetrically at the center.

[0007] Preferably, the pre-washing section is equipped with two rows of water spray nozzles, with at least six water spray nozzles evenly spaced in each row.

[0008] Preferably, when the workpiece is inside the pre-washing section, the workpiece is hung between two drainage nozzles by a hook.

[0009] Preferably, an infrared preheating furnace is installed inside the primer leveling chamber.

[0010] Preferably, the dimensions of the moisture drying tunnel are L33000, W1160, H4132mm, and the dimensions of the curing tunnel are L65000, W1260, H4192mm.

[0011] This utility model has at least the following beneficial effects:

[0012] This water-based spray painting line features: pre-degreasing combined with main degreasing for thorough degreasing; multi-stage water washing to ensure workpiece cleanliness; chromium-free purification for environmental protection and improved corrosion resistance; reasonable application of primer and topcoat; infrared preheating furnace and leveling chamber to ensure coating quality; symmetrical topcoat spray booths to improve production efficiency; and coordinated operation of all stages to ensure high product quality. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 This is a top view of the present invention;

[0015] Figure 2 This is a cross-sectional view of the pre-washing section of this utility model;

[0016] Figure 3 This is a cross-sectional view of the topcoat spray booth of this utility model;

[0017] Figure 4 This is a cross-sectional view of the moisture drying tunnel of this utility model;

[0018] Figure 5 This is a cross-sectional view of the curing tunnel of this utility model.

[0019] Explanation of icon numbers:

[0020] 1. Pre-degreasing section; 2. Main degreasing section; 3. Pre-washing section; 4. First wash section; 5. Second wash section; 6. Chromium-free purification section; 7. Third wash section; 8. Direct water spraying section; 9. Drip zone; 10. Moisture drying tunnel; 11. First natural cooling section; 12. Electrostatic powder coating chamber; 13. Primer spraying chamber; 14. Primer leveling chamber; 15. Topcoat spraying chamber; 16. Topcoat leveling chamber; 17. Curing tunnel; 18. Second natural cooling section. Detailed Implementation

[0021] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Please refer to Figures 1 to 5As shown in the embodiment of this utility model, a water-based spray painting line includes, in sequence according to the workpiece processing flow, a pre-degreasing section 1, a main degreasing section 2, a pre-washing section 3, a first washing section 4, a second washing section 5, a chromium-free purification section 6, a third washing section 7, a direct water spraying section 71, a dripping section 8, a moisture drying tunnel 9, a first natural cooling section 10, an electrostatic powder spraying chamber 11, a primer spraying chamber 12, a primer leveling chamber 13, a topcoat spraying chamber 14, a topcoat leveling chamber 15, a curing tunnel 16, and a second natural cooling section 17.

[0023] There are two topcoat spray booths 14, which are arranged symmetrically in the center.

[0024] The pre-wash section 3 is equipped with two rows of water spray nozzles, with at least six nozzles evenly spaced in each row. When the workpiece is inside the pre-wash section 3, it is hung between the two rows of water spray nozzles by hooks.

[0025] An infrared preheating furnace is installed inside the primer leveling chamber 13.

[0026] The dimensions of the moisture drying tunnel 9 are L33000, W1160, and H4132mm, and the dimensions of the curing tunnel 16 are L65000, W1260, and H4192mm.

[0027] This water-based spray paint line:

[0028] Pre-degreasing section 1: The technical effect is to initially remove oil and other impurities from the surface of the workpiece. The benefit is to reduce the processing burden of the subsequent main degreasing section, improve the overall degreasing efficiency, provide a better foundation for subsequent processing steps, and avoid oil stains affecting the effect of subsequent water washing, purification and other operations.

[0029] Main degreasing section 2: The technical effect is to perform the main degreasing treatment on the workpiece, further removing residual oil stains. The benefit is to ensure that the oil stains on the surface of the workpiece are fully removed, guarantee the quality of subsequent processing, and make the surface of the workpiece more suitable for subsequent treatments such as water washing and purification.

[0030] Pre-washing section 3:

[0031] Technical Effects: The system uses two rows of spray nozzles to perform a preliminary water wash on the workpiece, removing residual substances such as degreasers. The installation of two rows of spray nozzles, with at least six nozzles evenly spaced in each row, allows for comprehensive and multi-angle water washing of the workpiece, ensuring uniformity and thoroughness. The benefits include more effective cleaning of the workpiece, reduced residual impurities, reduced pressure on subsequent washing stages, improved washing results, and guaranteed surface cleanliness of the workpiece.

[0032] When the workpiece is inside the pre-washing section 3, it is hung between two water spray nozzles via hooks. This technique positions the workpiece appropriately, facilitating thorough cleaning by the spray nozzles and preventing obstruction that could affect the washing effect. The benefits include ensuring smooth washing operations, improving washing efficiency and quality, and guaranteeing that all parts of the workpiece are adequately cleaned.

[0033] First water washing stage 4: The technical effect is to further wash the workpiece to remove more impurities and residual substances. The benefit is to further improve the cleanliness of the workpiece surface, provide better conditions for subsequent processing, and ensure the effectiveness of subsequent chromium-free purification and other steps.

[0034] The second water washing stage 5: The technical effect is to wash again to further remove any impurities and chemicals that may remain on the surface of the workpiece. The benefit is to ensure that the surface of the workpiece reaches a high level of cleanliness, meet the requirements of subsequent high-precision processing such as chromium-free purification, and improve product quality.

[0035] Chromium-free purification section 6: The technical effect is to perform chromium-free purification treatment on the surface of the workpiece to form a protective film. The benefits are to improve the corrosion resistance and surface quality of the workpiece, enhance its performance and service life, and at the same time avoid the use of harmful substances containing chromium, thus meeting environmental protection requirements.

[0036] The third water washing section 7: The technical effect is to wash the workpiece after chromium-free purification treatment with water to remove residual purifying agents and other substances. The benefit is to ensure the cleanliness of the workpiece surface, avoid residual substances affecting subsequent processing, and ensure the quality of the final product.

[0037] Direct water spray section 71: The technical effect is to directly spray clean water onto the workpiece to further remove impurities and residues. The benefit is to further improve the cleanliness of the workpiece surface, preparing it for subsequent dripping and drying steps, and ensuring product quality.

[0038] Drip section 8: The technical effect is to allow the moisture on the surface of the workpiece to drip off naturally. The benefits are that it removes some moisture, reduces the burden on the drying tunnel, improves drying efficiency, and saves energy.

[0039] Moisture drying tunnel 9: Its technical effect is to dry the remaining moisture on the workpiece surface. This ensures the workpiece surface is dry, providing favorable conditions for subsequent electrostatic powder coating, painting, and other operations, preventing moisture from affecting the adhesion and quality of the coating. Its dimensions are L33000, W1160, H4132mm. These suitable dimensions allow for proper placement and movement of the workpiece within the tunnel, ensuring effective drying.

[0040] The first natural cooling section 10: The technical effect is to allow the dried workpiece to cool naturally. The advantage is that it reduces the workpiece temperature to a suitable range, which facilitates the operation of the electrostatic powder spraying chamber and avoids the adverse effects of high temperature on subsequent processes such as powder spraying and painting.

[0041] Electrostatic powder coating chamber 11: The technical effect is to perform electrostatic powder coating on the workpiece, so that the powder is evenly attached to the surface of the workpiece. The benefit is that it forms a uniform coating, improves the protective performance and appearance quality of the workpiece, and provides a foundation for subsequent painting and other processes.

[0042] Primer spray booth 12: The technical effect is to spray primer onto the workpiece. The benefits are to enhance the adhesion between the workpiece surface and the topcoat, while providing a certain degree of protection and improving the overall performance and quality of the workpiece.

[0043] Primer leveling chamber 13:

[0044] The primer leveling chamber 13 is equipped with an infrared preheating furnace. The technical effect is that the infrared preheating furnace levels the primer on the workpiece surface, resulting in a more uniform primer coating. This improves the quality and adhesion of the primer, avoids defects such as flow marks and orange peel, and provides a better foundation for topcoat application.

[0045] Topcoat spray booth 14:

[0046] The technical effect is to spray a topcoat onto the workpiece to form an aesthetically pleasing and protective surface coating, thereby improving the workpiece's appearance quality and protective performance.

[0047] Two paint spray booths (14 in total) are centrally symmetrically arranged. This allows for simultaneous paint spraying of two workpieces, improving production efficiency. The centrally symmetrical arrangement facilitates equipment layout and operation, promoting efficient resource utilization and production process optimization. The benefits include improved production efficiency, reduced production costs, and easier management and maintenance while ensuring product quality.

[0048] Topcoat leveling chamber 15: The technical effect is to make the topcoat flow smoothly on the surface of the workpiece, forming a uniform and smooth coating. The benefits are to improve the quality and appearance of the topcoat, avoid defects such as flow marks and orange peel, make the product surface more beautiful, and improve the quality of the product.

[0049] Curing Tunnel 16: Its technical effect is to cure the sprayed primer and topcoat, forming a strong coating. Its dimensions are L65000, W1260, H4192mm. Suitable dimensions ensure sufficient space for the workpiece to cure, guaranteeing a good curing effect. The benefits include improved coating adhesion and hardness, enhanced workpiece protection, and extended service life.

[0050] The second natural cooling section 17: The technical effect is to allow the cured workpiece to cool naturally. The advantage is that it reduces the workpiece temperature to a suitable range, which facilitates subsequent handling and storage operations and avoids damage to the workpiece or affecting product quality caused by high temperature.

[0051] In summary, this water-based spray painting line features: pre-degreasing combined with main degreasing for thorough degreasing; multi-stage water washing to ensure workpiece cleanliness; chromium-free purification for environmental protection and improved corrosion resistance; reasonable application of primer and topcoat; infrared preheating oven and leveling chamber to ensure coating quality; symmetrical topcoat spray booths to improve production efficiency; and coordinated operation of all stages to ensure high product quality.

[0052] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A water-based spray painting line, characterized in that, The workpiece processing flow includes, in sequence, a pre-degreasing section (1), a main degreasing section (2), a pre-washing section (3), a first washing section (4), a second washing section (5), a chromium-free purification section (6), a third washing section (7), a direct water spraying section (71), a dripping section (8), a moisture drying tunnel (9), a first natural cooling section (10), an electrostatic powder spraying chamber (11), a primer spraying chamber (12), a primer leveling chamber (13), a topcoat spraying chamber (14), a topcoat leveling chamber (15), a curing tunnel (16), and a second natural cooling section (17).

2. The water-based spray painting line according to claim 1, characterized in that: There are two topcoat spray booths (14), and the two topcoat spray booths (14) are arranged symmetrically at the center.

3. The water-based spray painting line according to claim 1, characterized in that: The pre-washing section (3) is equipped with two rows of water spray nozzles, with at least six water spray nozzles evenly spaced in each row.

4. A water-based spray painting line according to claim 3, characterized in that: When the workpiece is inside the pre-washing section (3), the workpiece is hung between two drainage nozzles by hooks.

5. A water-based spray painting line according to claim 1, characterized in that: An infrared preheating furnace is installed inside the primer leveling chamber (13).

6. A water-based spray painting line according to claim 1, characterized in that: The dimensions of the moisture drying tunnel (9) are L33000, W1160, H4132mm, and the dimensions of the curing tunnel (16) are L65000, W1260, H4192mm.

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