Multi-angle adjustable engine cylinder paint spraying device and paint spraying effect detection method

Abstract

The invention relates to the technical field of engine cylinder body paint spraying, and particularly discloses an engine cylinder body paint spraying device capable of being adjusted at multiple angles and a paint spraying effect detection method. Comprising an adjustable carrying table and a paint spraying mechanism which are arranged in a paint spraying chamber. The adjustable carrying table is used for fixing an engine cylinder body and at least comprises two-degree-of-freedom adjustment, and the paint spraying mechanism at least comprises three-degree-of-freedom adjustment; the paint spraying mechanism is arranged at the top of the paint spraying chamber through the track mechanism, and the position can be adjusted within a preset range through the track mechanism; the paint spraying mechanism is further provided with a detection part used for detecting whether paint spraying on the engine cylinder block is qualified or not. The engine cylinder body can be moved to a preset position through the adjustable carrying table, and paint spraying operation is achieved through the paint spraying mechanism. And a safe distance is formed between a spray head arranged on the paint spraying mechanism and the engine cylinder body. The device can flexibly adapt to various engine cylinder bodies with different shapes, sizes and complex structures.

Description

Technical Field

[0001] The invention relates to the technical field of engine cylinder body painting, and in particular to an engine cylinder body painting device capable of being adjusted at multiple angles and a painting effect detection method. Background Art

[0002] In the engine manufacturing industry, the painting process on the surface of the cast iron engine cylinder is a key link to ensure the performance and service life of the cast iron engine. High-quality coatings can not only improve the wear resistance and corrosion resistance of the cylinder, but also enhance its aesthetics and thermal conductivity. However, due to the complex structure of the engine cylinder, including a variety of curved surfaces and angle areas, high requirements are placed on the flexibility and accuracy of the painting device. In the prior art, traditional painting devices usually operate through a fixed painting path or a single degree of freedom adjustment mechanism, which makes it difficult to fully cover the complex surface of the cylinder. Although some equipment can improve the flexibility of painting by adding a mechanical arm or a rotating platform, these devices often have problems such as limited adjustment range and insufficient control accuracy, which may cause uneven painting, leakage or overspray on the coating. In addition, for the detection of paint quality, most of the current technologies use an offline detection mode, which requires the cylinder after painting to be transferred to a special detection device for detection. This method is not only time-consuming and labor-intensive, but may also damage the coating surface due to mechanical contact during the transfer process. During the painting process, due to various factors (such as equipment errors, fluctuations in paint performance, etc.), it is difficult to ensure that the painting area is fully qualified. When unqualified areas appear, traditional processes usually require the entire workpiece to be repainted, which not only increases the waste of paint and energy consumption, but may also affect the quality of the original coating. In addition, the safety design during the painting operation is insufficient, and the distance between the nozzle and the workpiece is uncontrollable, which may cause damage to mechanical parts or substandard painting results.

[0003] In the patent "A multi-angle switching engine cylinder automatic spraying device and method" (publication number CN118060111A, hereinafter referred to as prior art 1), a multi-angle switching engine cylinder automatic spraying device and method are disclosed. In prior art 1, the spraying device can change the angle during spraying, and can automatically flip the engine cylinder, thereby improving the efficiency of the spraying operation. Specifically, the device includes a spray box, a first positioning frame, a second positioning frame, a clamping plate, a power motor, a threaded screw, a movable plate, an arc rack, a limit plate, a second transmission rack, a reciprocating screw, a transmission gear, a first transmission rack, an inner ratchet, a pawl and a reset spring. Through the cooperation of these components, the left and right positions of the nozzle and the translational stability of the nozzle are adjusted. At the same time, through the cooperation of the electric push rod and the limit plate, the movable plate and the threaded screw, the reciprocating screw and the second transmission rack, etc., the spraying angle and spraying range of the nozzle can be adjusted.

[0004] Although the prior art 1 has been able to flip the engine so as to spray paint or spray coating from multiple angles, the clamping device designed therein causes the engine to be suspended in the air during the operation, which poses a safety hazard to the entire painting operation. In addition, the prior art 1 uses a rotary painting method, which is convenient but cannot ensure the quality of the painting effect. Due to the limitations of rotary painting, it is difficult to achieve full coverage of the engine surface and uniformity of the painting, which directly affects the final effect of the painting operation. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides an engine cylinder body paint spraying device which can be adjusted at multiple angles and a paint spraying effect detection method, so as to solve the problem that the conventional paint spraying device for the engine cylinder body in the prior art is difficult to achieve the effect of full coverage and uniform paint spraying.

[0006] In the first aspect, an embodiment of the present invention provides an engine cylinder body painting device that can be adjusted at multiple angles, comprising an adjustable platform and a paint spraying mechanism arranged in a paint spraying room; the adjustable platform is used to fix the engine cylinder body and includes at least two degrees of freedom of adjustment, and the paint spraying mechanism includes at least three degrees of freedom of adjustment; the paint spraying mechanism is arranged on the top of the paint spraying room through a track mechanism, and the position can be adjusted within a preset range through the track mechanism; the paint spraying mechanism is also provided with a detection component for detecting whether the paint spraying of the engine cylinder body is qualified; the engine cylinder body can be moved to a preset position through the adjustable platform and the paint spraying operation can be realized through the paint spraying mechanism; the nozzle arranged on the paint spraying mechanism is set at a safety distance from the engine cylinder body.

[0007] Preferably, the adjustable platform moves based on a displacement guide rail arranged at the bottom of the paint spraying room; the adjustable platform includes a frame connected to the displacement guide rail and auxiliary wheels arranged around the frame; the frame is provided with a mounting plate and a loading platform that can rotate based on the mounting plate.

[0008] Preferably, the paint spraying mechanism includes a first paint spraying mechanism and a second paint spraying mechanism; the first paint spraying mechanism is provided with an annular paint spraying pipe, and the inner circle of the annular paint spraying pipe is evenly spaced and provided with a plurality of spray heads; the detection component is also provided on the inner circle of the annular paint spraying pipe; within the same time period, the first paint spraying mechanism or the second paint spraying mechanism is used to spray paint the engine cylinder block; when the first paint spraying mechanism or the second paint spraying mechanism is spraying paint on the engine cylinder block, the second paint spraying mechanism or the first paint spraying mechanism is in a preset safety zone.

[0009] Preferably, the track mechanism includes a main track and a first moving mechanism and a second moving mechanism arranged on the main track; the first moving mechanism and the second moving mechanism can both move based on the main track; the first paint spraying mechanism is arranged on the first moving mechanism; the second paint spraying mechanism is arranged on the second moving mechanism; a first safety zone and a second safety zone are respectively provided at both ends of the main track; when the first paint spraying mechanism or the second paint spraying mechanism is operating; the second paint spraying mechanism is located in the second safety zone or the first paint spraying mechanism is located in the first safety zone; the working zone is between the first safety zone and the second safety zone.

[0010] Preferably, the main track is arranged along the lateral direction of the paint spraying room and is parallel to the displacement guide rail; the first moving mechanism includes a first moving frame and a second moving frame arranged on the first moving frame; both ends of the first moving frame are connected to the main track; the second moving mechanism and the first moving mechanism are arranged in the same manner.

[0011] In a second aspect, a method for detecting a paint effect is provided, comprising: performing a paint spraying operation on the engine cylinder body through the first paint spraying mechanism; detecting the paint spraying information of the engine cylinder body through the detection component after the paint spraying operation is completed; judging whether the paint spraying operation is qualified according to the detected paint spraying information; if unqualified, collecting the area of ​​the unqualified area according to the paint spraying information, and matching the area with a re-spraying threshold; if the area of ​​the unqualified area successfully matches the re-spraying threshold, re-spraying is performed using the corresponding paint spraying mechanism.

[0012] Preferably, detecting the painting information of the engine block by the detection component after the painting operation is completed includes: detecting the thickness of the painted surface of the engine block by the detection component; detecting bubbles on the painted surface of the engine block by the detection component; detecting cracks on the painted surface of the engine block by the detection component; detecting the absorptivity of the painted surface of the engine block by the detection component; detecting the reflectivity of the painted surface of the engine block by the detection component; detecting the emissivity of the painted surface of the engine block by the detection component.

[0013] Preferably, judging whether the painting operation is qualified based on the detected painting information includes: comparing the thickness of the painted surface of the engine block with a thickness threshold, if the thickness of the painted surface of the engine block is less than the thickness threshold, it is unqualified; comparing the area ratio of bubbles and cracks on the painted surface of the engine block with the total painted area, if the parameters of the bubbles and cracks do not match the corresponding standard value range, it is unqualified; comparing the absorptivity, reflectivity and emissivity of the painted surface of the engine block with the standard values ​​respectively, if one of the absorptivity, reflectivity and emissivity of the painted surface of the engine block does not match the standard value range, it is unqualified.

[0014] Preferably, if it is unqualified, the area of ​​the unqualified area is collected according to the paint spraying information, and the area is matched with the re-spraying threshold, including: comparing the area of ​​the unqualified area with the first re-spraying threshold, when the area of ​​the unqualified area is less than or equal to the first re-spraying threshold, the matching fails; comparing the area of ​​the unqualified area with the first re-spraying threshold, when the area of ​​the unqualified area is greater than the first re-spraying threshold or the second re-spraying threshold, the matching is successful.

[0015] Preferably, if the area of ​​the unqualified area successfully matches the supplementary spraying threshold, adopting the corresponding painting mechanism to perform supplementary spraying includes: when the area of ​​the unqualified area is greater than the first supplementary spraying threshold and less than the second supplementary spraying threshold, adopting the second painting mechanism to perform supplementary spraying;

[0016] When the area of ​​the unqualified region is larger than the second re-spraying threshold, re-spraying is performed through the first painting mechanism.

[0017] The engine cylinder body paint spraying device and paint spraying effect detection method provided by the present invention can be adjusted at multiple angles and have the following beneficial effects:

[0018] The design of the painting device includes a platform with multi-degree-of-freedom adjustment function and a painting mechanism, which enables the device to flexibly adapt to various shapes, sizes and engine blocks with complex structures. Through this design, the painting device can achieve high-precision full-coverage painting operations, significantly improving the versatility and flexibility of the process. The painting mechanism can effectively expand the coverage of the painting area through the movement of the track mechanism, and is no longer limited to the painting operation at a single position, thereby significantly improving the utilization rate and production efficiency of the equipment. In addition, detection components are specially set on the painting mechanism, which can monitor the painting effect in real time to ensure the quality of the painting. In this way, there is no need to transfer the workpiece to other locations for independent inspection, which simplifies the entire operation process and saves valuable time costs. The detection component can also accurately collect the area information of the unqualified area during the painting process, and make intelligent judgments based on the preset re-spraying threshold, and only perform accurate re-spraying operations on those areas that really need re-spraying, further improving the efficiency and quality of the painting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings required for use in the embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the present invention.

[0020] Figure 1It is a schematic diagram of an engine cylinder block painting device that can be adjusted at multiple angles;

[0021] Figure 2 It is a structural schematic diagram of an engine cylinder body painting device that can be adjusted at multiple angles;

[0022] Figure 3 It is a structural schematic diagram of a ring-shaped paint spraying pipeline of an engine cylinder body paint spraying device which can be adjusted at multiple angles;

[0023] Figure 4 It is a schematic diagram of the structure of an adjustable platform of an engine cylinder body painting device which can be adjusted at multiple angles;

[0024] Parts and numbers in the picture:

[0025] 100-painting room, 110-displacement guide rail;

[0026] 200-adjustable stage, 210-frame, 220-mounting plate, 230-stage;

[0027] 310-first paint spraying mechanism, 311-annular paint spraying pipeline, 320-second paint spraying mechanism, 331-spraying head;

[0028] 400-engine block;

[0029] 510-main track, 511-first safety zone, 512-second safety zone, 513-working zone, 520-first moving mechanism, 521-first moving frame, 522-second moving frame, 530-second moving mechanism;

[0030] 600-Detection components. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described in conjunction with the drawings in the embodiment of the present invention. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Moreover, the term "includes", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In the absence of further restrictions, the elements defined by the phrase "comprising..." do not exclude the existence of other identical elements in the process, method, article or device comprising the elements. If there is no conflict, the embodiments of the present invention and the various features in the embodiments can be combined with each other, all within the protection scope of the present invention.

[0032] Example 1

[0033] See also Figure 1 An embodiment of the present invention provides an engine cylinder body painting device that can be adjusted at multiple angles. The device is equipped with a painting device that can be adjusted at multiple angles, thereby achieving a comprehensive and uniform painting effect on the engine cylinder body 400.

[0034] In this embodiment, the proposed multi-angle adjustable paint spraying device is composed of an adjustable platform 200 and a paint spraying mechanism disposed in a paint spraying room 100;

[0035] See also Figure 1 and Figure 4The main function of the adjustable platform 200 is to fix the engine block 400, and it has at least two degrees of freedom of adjustment, while the paint spraying mechanism has at least three degrees of freedom of adjustment to achieve multiple angles and uniform painting of the engine block 400. The two degrees of freedom of the adjustable platform 200 can be used to change the rotation angle and height of the cylinder. The three degrees of freedom of the paint spraying mechanism can be used to adjust the position and angle of the spray head 331 to meet the coverage requirements of different surfaces. The flexibility of the painting operation is significantly improved, the strict requirements on the position of the paint object are reduced, and it is suitable for a variety of product models.

[0036] See also Figure 1 The paint spraying mechanism is placed at the top of the paint spraying room 100, and the adjustable platform 200 is located on the floor of the paint spraying room 100. When performing the paint spraying operation, the adjustable platform 200 needs to be moved to the center of the paint spraying room 100 first, and then the relative position between the paint spraying mechanism and the adjustable platform 200 is adjusted. By finely adjusting the paint spraying mechanism, the engine block 400 can be painted in an all-round and uniform manner.

[0037] Furthermore, the bottom of the spray booth 100 adopts a hollow structure design, which allows the excess spray paint to be discharged smoothly during the spray painting process, thereby effectively preventing material waste and pollution. This structure not only improves the spray painting efficiency, but also helps to maintain the cleanliness of the working environment, reduces pollution to the environment, and meets the high requirements for environmental protection in modern industrial production.

[0038] In this embodiment, the paint spraying mechanism is installed at the top of the paint spraying room 100 through a track mechanism. Such a setting allows the paint spraying mechanism to flexibly adjust its position within a certain preset range (safety range), thereby realizing efficient and accurate painting operations on cylinders of different sizes and shapes. Through the movement of the track mechanism, the spray head 331 can be accurately positioned to ensure that it can meet the full range of painting requirements of cylinders of various complex shapes, thereby greatly improving the flexibility and adaptability of the painting operation.

[0039] See also Figure 1 and Figure 3 In addition, the painting mechanism is also specially equipped with a detection component 600 for detecting whether the painting quality of the engine cylinder block 400 is qualified. These detection components 600 can monitor the painting effect in real time to ensure the uniformity and quality of the paint layer. This automated quality inspection mechanism can significantly reduce human intervention and improve the consistency of painting quality, thereby effectively reducing the rework rate and ensuring production efficiency and product quality.

[0040] In actual operation, the engine block 400 can be moved to a preset position by the adjustable platform 200, and then the precise painting operation is performed by the paint spraying mechanism. An appropriate safety distance is set between the spray head 331 set on the paint spraying mechanism and the engine block 400. This setting can effectively avoid collision damage caused by the spray head 331 being too close to the cylinder body during the painting process, or uneven painting due to improper distance. By maintaining an appropriate safety distance between the spray head 331 and the cylinder body, not only can the paint spraying equipment and the engine block 400 be protected from damage, but also the service life of the equipment and the safety of operation can be improved, ensuring the smoothness and efficiency of the entire painting process.

[0041] See also Figure 1 and Figure 2 In this embodiment, the adjustable platform 200 is arranged on the displacement rail 110 at the bottom of the spray booth 100, so that the adjustable platform 200 can move along a predetermined trajectory. The adjustable platform 200 includes a frame 210 connected to the displacement rail 110, and auxiliary wheels arranged around the frame 210, which help the smooth movement of the adjustable platform 200. The frame 210 is also provided with a mounting plate 220, and a stage 230 that can rotate based on the mounting plate 220. Through such an arrangement, the structure of the adjustable platform 200 combines the displacement rail 110, the frame 210, the auxiliary wheels, the mounting plate 220 and the stage 230 together to form a multifunctional, highly flexible and stable structural system. The displacement rail 110 is arranged at the bottom of the spray booth 100, so that the entire adjustable platform 200 can move linearly along the rail within a specific range, thereby realizing the precise positioning of the cylinder body in the spray booth 100. The provision of the auxiliary wheels further enhances the smoothness of the movement of the adjustable platform 200, improves the load-bearing capacity of the adjustable platform 200, reduces the friction and wear between the frame 210 and the guide rails, and thus extends the service life of the equipment.

[0042] See also Figure 4, the frame 210 serves as the core supporting component of the entire adjustable stage 200, providing a solid foundation for the entire device. The frame 210 has a solid structure and can meet the requirements of various painting tasks for bearing capacity and stability. The mounting plate 220 is arranged on the frame 210, providing a rotatable platform for the stage 230, allowing the cylinder body to be adjusted in angle during the painting process, thereby achieving all-round and multi-angle coating coverage. The rotation function of the stage 230 is particularly suitable for the engine cylinder body 400 with a complex shape, and can accurately adjust the orientation of the cylinder body, so that the painting mechanism can easily complete the painting operation of the difficult-to-reach area without the need for complex movements. This not only improves the efficiency of the coating, but also ensures the uniformity and quality consistency of the coating. This adjustable stage 200 design has significant advantages in flexibility, stability and efficiency. By combining the linear movement of the displacement guide rail 110 and the angle adjustment of the stage 230, not only the positioning and adjustment process of the cylinder body during the painting process is simplified, but also the painting requirements of cylinder bodies of different specifications and shapes can be met. At the same time, such a setting also has strong adaptability and can flexibly respond to possible equipment limitations and process adjustment requirements in the paint spraying room 100.

[0043] See also Figure 1 and Figure 2 The paint spraying mechanism includes a first paint spraying mechanism 310 and a second paint spraying mechanism 320; the first paint spraying mechanism 310 is provided with an annular paint spraying pipe 311, and the inner circle of the annular paint spraying pipe 311 is evenly spaced with a plurality of spray heads 331, and a surrounding paint spraying operation is performed on the engine cylinder body 400 through the plurality of spray heads 331. The detection component 600 is also arranged on the inner circle of the annular paint spraying pipe 311; in the same period of time, the first paint spraying mechanism 310 or the second paint spraying mechanism 320 is used to spray paint the engine cylinder body 400; when the first paint spraying mechanism 310 or the second paint spraying mechanism 320 is spraying paint on the engine cylinder body 400, the second paint spraying mechanism 320 or the first paint spraying mechanism 310 is in a preset safety zone.

[0044] In this embodiment, the design of the track mechanism includes a main track 510, and two mobile mechanisms arranged on the main track 510, namely, a first mobile mechanism 520 and a second mobile mechanism 530; and a driving unit driving the first mobile mechanism 520 and the second mobile mechanism 530. The two mobile mechanisms can move along the main track 510 through the driving of the driving unit to facilitate the execution of their respective painting tasks. The first painting mechanism 310 is fixedly mounted on the first mobile mechanism 520, and the second painting mechanism 320 is fixedly mounted on the second mobile mechanism 530. In order to ensure the safety of the operation, a second safety zone 512 and a second safety zone 512 are respectively set at both ends of the main track 510. When the first painting mechanism 310 or the second painting mechanism 320 is operating, the other painting mechanism will be located in the corresponding safety zone, so as to avoid mutual interference or collision during the operation. The second safety zone 512 and the second safety zone 512 are defined as the working area 513 between the second safety zone 512, which is the area where the painting operation is actually carried out, and the safe operation of the painting can be ensured.

[0045] In this embodiment, by reasonably dividing the work of the first paint spraying mechanism 310 and the second paint spraying mechanism 320, and dynamically setting the safety zone, the paint spraying efficiency and operational safety can be organically unified. The first paint spraying mechanism 310 adopts an annular paint spraying pipe 311 structure, and the nozzles 331 evenly distributed inside it can cover multiple surfaces of the engine cylinder block 400 at the same time, which is particularly suitable for paint spraying operations that require a uniform coating. This annular design not only ensures the comprehensiveness and efficiency of paint spraying, but also effectively reduces the generation of paint spraying dead angles, thereby significantly improving the quality of paint spraying. The detection component 600 set in the inner ring of the annular paint spraying pipe 311 can monitor the paint spraying process in real time to ensure that the thickness and uniformity of the coating meet the process requirements. This real-time feedback mechanism not only improves the accuracy of the paint spraying operation, but also can quickly identify abnormal conditions in the paint spraying and reduce the occurrence of quality problems.

[0046] See also Figure 1In addition, the time-sharing design of the first painting mechanism 310 and the second painting mechanism 320 further optimizes the painting process. When one of the mechanisms is performing the painting operation, the other mechanism is located in the safety zone, which avoids the interference and potential collision risks of the two sets of equipment working at the same time. The setting of this dynamic safety zone not only improves the safety of the equipment, but also provides sufficient space for the maintenance and overhaul of the equipment. In actual operation, this time-sharing operation mode can flexibly respond to changes in production rhythm. For example, in the switching of different workpieces or different painting tasks, by selecting a suitable painting mechanism, the adaptability and flexibility of the entire system are improved. This setting also has the function of redundant backup. When a painting mechanism fails, another painting mechanism can quickly take over to avoid long-term shutdown of the production line, thereby improving the reliability of equipment operation and production continuity. Through the collaborative work of the two sets of painting mechanisms, it is possible to accelerate the completion of the painting operation in some cases, and it is also possible to divide the work and cooperate in complex processes, such as one mechanism is responsible for large-area coverage and the other mechanism handles detail painting, so as to achieve the best balance between quality and efficiency.

[0047] See also Figure 1 In this embodiment, the main track 510 is arranged in the lateral direction of the paint spraying room 100 and remains parallel to the displacement guide rail 110; the first moving mechanism 520 includes a first moving frame 521 and a second moving frame 522 arranged on the first moving frame 521; both ends of the first moving frame 521 are connected to the main track 510; the second moving mechanism 530 is arranged in the same manner as the first moving mechanism 520.

[0048] This arrangement is to set the main track 510 in the spray booth 100 in a horizontal direction and parallel to the displacement guide rail 110, so that the movement paths of the spray paint mechanism and the adjustable carrier 200 are highly matched in space, forming a compact and efficient collaborative system. The first mobile frame 521 in the first mobile mechanism 520 is connected to both ends of the main track 510, providing a basis for lateral movement, and the second mobile frame 522 thereon further increases the longitudinal adjustment capability of the system. The design of this double-layer mobile frame not only expands the working range of the spray paint mechanism, but also realizes multi-dimensional precise positioning, so that the spray paint mechanism can flexibly adapt to the painting needs of engine cylinders 400 of different models and sizes. In addition, such an arrangement also allows the spray paint mechanism to be adjusted at different heights to adapt to cylinders of different heights, thereby further improving the flexibility and adaptability of the spray paint operation.

[0049] The parallel arrangement of the main track 510 and the displacement guide 110 forms a coordinated motion mechanism between the paint spraying mechanism and the adjustable carrier 200. During the painting process, the adjustable carrier 200 moves along the displacement guide 110 to drive the cylinder body to the painting position, while the paint spraying mechanism moves along the main track 510 to cover various areas of the cylinder body. This movement mode with a clear division of labor not only avoids interference in the operation of the equipment, but also significantly improves the overall operating efficiency. At the same time, this setting reduces the difficulty of equipment design and control by reducing the intersection complexity of the movement trajectory of the paint spraying mechanism and the adjustable carrier 200, and provides a strong guarantee for the stability of the system operation. In addition, this coordinated motion mechanism also allows the paint spraying mechanism to be adjusted at different angles and directions to achieve precise painting of various parts of the cylinder body, thereby further improving the accuracy and quality of the painting operation.

[0050] See also Figure 1 In this embodiment, by setting the first mobile mechanism 520 and the second mobile mechanism 530 to a consistent structural design, not only the production and assembly process of the equipment is simplified, but also the modular characteristics of the system are enhanced. Whether it is the first mobile mechanism 520 or the second mobile mechanism 530, its standardized design facilitates maintenance, replacement and upgrading. This consistency can also reduce the complexity of equipment management and reduce spare parts inventory costs, thereby saving operating expenses for the enterprise. In addition, this modular design also allows the equipment to be quickly adapted and deployed in different production environments, improving the flexibility and adaptability of the equipment.

[0051] Another major advantage of this structural design is its efficient use of space. The combination of the horizontally arranged main track 510 and the longitudinally adjusted mobile frame enables the paint spraying mechanism to be flexibly adjusted in the paint spraying room 100, making full use of every inch of space in the paint spraying room 100. This compact layout is particularly suitable for scenes where the production environment space is limited or requires efficient use. In addition, the combined structure of the first mobile frame 521 and the second mobile frame 522 can provide good bearing capacity and stability, so that the paint spraying mechanism can maintain accurate positioning and smooth movement even in the face of high-speed movement or frequent switching during operation. This design of efficient use of space not only improves the efficiency of the paint spraying operation, but also reduces production costs, bringing greater economic benefits to the enterprise.

[0052] In this embodiment, through this arrangement, the cooperation between the main track 510 and the displacement guide rail 110, combined with the flexible design of the dual mobile frames, realizes efficient movement and precise control of the coating mechanism, while taking into account the stability, modularity and economy of the system, providing all-round support for high-quality completion of the coating operation.

[0053] Example 2

[0054] The embodiment of the present invention provides a method for detecting the effect of painting. Since the first paint spraying mechanism 310 is mainly used to spray paint on the engine block 400 in Embodiment 1, and the first paint spraying mechanism 310 adopts an annular paint spraying pipe 311 structure, when the engine block 400 is relatively regular, the paint coating can be directly uniform to achieve a better painting effect; however, for an irregular engine block 400, the distance between each nozzle 331 and the paint surface of the engine block 400 is different, so different painting effects may be produced; the nozzle 331 at a farther distance may cause the problem of insufficient painting effect; therefore, the painting effect is detected by the detection method in this embodiment to achieve comprehensive and uniform painting.

[0055] In this embodiment, the paint spraying effect detection method includes:

[0056] The engine cylinder block 400 is subjected to a painting operation by the first painting mechanism 310;

[0057] After the painting operation is completed, the detection component 600 detects the painting information of the engine cylinder 400; after the painting operation is completed, the detection component 600 obtains the painting information of the engine cylinder 400, so as to quickly and accurately judge whether the painting quality is qualified. This can avoid the uncertainty of human visual judgment and improve the reliability of painting quality detection.

[0058] Judging whether the painting operation is qualified according to the detected painting information;

[0059] If it is unqualified, the area of ​​the unqualified area is collected based on the painting information, and the area is matched with the re-spraying threshold; only the area of ​​the unqualified area is calculated and analyzed, instead of repainting the entire cylinder body. This reduces the waste of painting materials and production costs, while avoiding quality problems (such as too thin a coating) that may be caused by repeated painting of qualified areas.

[0060] If the area of ​​the unqualified area matches the re-spraying threshold, the corresponding painting mechanism will be used for re-spraying. By comparing the area of ​​the unqualified area with the re-spraying threshold, it is precisely determined whether re-spraying is needed and the specific location of the re-spraying. Reduce unnecessary operations, further optimize the painting process, and improve production efficiency. The re-spraying process is driven by the detection data and completed in combination with the corresponding painting mechanism without manual intervention. It can achieve a high degree of automation of painting and testing, reduce human errors and operational complexity, and is suitable for large-scale industrial production. Only detect unqualified areas and perform re-spraying to avoid re-testing and processing the entire cylinder. By repairing unqualified areas, the scrap rate is significantly reduced.

[0061] When the painting operation is completed, the paint information of the engine block 400 detected by the detection component 600 includes: detecting the thickness of the painted surface of the engine block 400 by the detection component 600; detecting bubbles on the painted surface of the engine block 400 by the detection component 600; detecting cracks on the painted surface of the engine block 400 by the detection component 600; detecting the absorptivity of the painted surface of the engine block 400 by the detection component 600; detecting the reflectivity of the painted surface of the engine block 400 by the detection component 600; and detecting the emissivity of the painted surface of the engine block 400 by the detection component 600.

[0062] When testing the above factors, the testing component 600 is used for testing; when performing the painting operation, the paint spraying mechanism will spray paint from the top of the engine cylinder downwards, and the amount of paint sprayed for the first time is small. Since the painting operation is performed from top to bottom, the paint spraying area below may be thicker due to the paint material of the paint spraying area above pouring down, resulting in uneven paint spraying in which some areas are thicker and some areas are thinner. Therefore, when performing the painting operation, a smaller amount of paint is used for painting, so that the paint spraying material has better adhesion and cooling effect, so that the paint spraying material will not pour everywhere, and the painting effect is guaranteed.

[0063] In addition, during the painting process, the painting effect is detected while the painting is being sprayed. In this embodiment, the thickness, bubbles, cracks, absorption rate, reflectivity and emissivity of the area after painting are detected by the detection component 600 (such as an infrared camera).

[0064] In this embodiment, the painting effect is detected by a variety of information, and the comprehensiveness and accuracy of the judgment of the painting quality are improved from a multi-dimensional detection method. It can not only detect the problem of insufficient thickness of the paint layer, but also identify surface defects such as bubbles and cracks, and evaluate the performance indicators such as surface absorptivity, reflectivity and emissivity. The combination of this information effectively avoids misjudgment or missed judgment caused by the insufficiency of a single detection standard. Secondly, the comprehensive analysis of multiple information can classify and process different types of painting problems, provide a scientific basis for subsequent re-spraying decisions, thereby achieving targeted repairs and improving the overall consistency of the painting quality. In addition, the multi-dimensional detection method reduces the reliance on human visual judgment, reduces the impact of human errors, and the detection results are more objective and repeatable.

[0065] The step of judging whether the painting operation is qualified according to the detected painting information includes:

[0066] Comparing the thickness of the painted surface of the engine block 400 with a thickness threshold, and failing if the thickness of the painted surface of the engine block 400 is less than the thickness threshold;

[0067] Compare the area ratio of bubbles and cracks on the painted surface of the engine block 400 with the total painted area. If the parameters of the bubbles and cracks do not match the corresponding standard value range, the engine block 400 is unqualified.

[0068] The absorptivity, reflectivity and emissivity of the painted surface of the engine block 400 are compared with standard values ​​respectively. If any one of the absorptivity, reflectivity and emissivity of the painted surface of the engine block 400 does not match the standard value range, the engine block 400 is unqualified.

[0069] Furthermore, in actual painting, an expected qualified paint thickness (thickness threshold) is set to 0.1-0.15mm. When the thickness detected during actual painting is lower than 0.1mm or higher than 0.15mm (due to the initial small amount of painting method adopted in this embodiment, there is basically no possibility of being higher than 0.15mm. Therefore, it is not described), the painted area is judged to be an unqualified area.

[0070] In actual painting, the diameter of the bubble should be controlled below 0.5mm. When the bubble thickness detected in actual painting is greater than 0.5mm, it means that the painting effect of this painting area is not good, resulting in bubbles, making the coating of the painting area thinner, and the painting area is judged as an unqualified area.

[0071] In actual painting, the cracks produced will cause the paint thickness at the cracks to be thinner. Generally, the thickness at the cracks should be within the range of 0.1-0.15mm, and the length of the cracks should be less than 2mm. When the actual paint thickness of the cracks is less than 0.1mm or the length of the cracks is greater than 2mm, the painted area is judged as an unqualified area.

[0072] Absorption is the degree to which the paint layer absorbs incident energy, and is usually closely related to the thermal or functional properties of the material. If the absorption rate varies significantly in different areas of the paint layer, it means that the thickness or composition of the paint layer is unevenly distributed. If the actual absorption rate is lower than the standard value, it may mean that the composition of the paint material is deviated or the surface is not fully attached. In actual painting, the absorption rate of the painted area is generally normal when it is above 85%; when the measured absorption rate is compared with the standard value (85%), if the absorption rate is lower than 85%, it is judged as an unqualified area.

[0073] Emissivity is the ability of a paint layer to re-emit absorbed energy as thermal radiation. Coatings with high emissivity are more suitable for heat dissipation (such as heat shielding or cooling equipment coatings). If the actual emissivity is lower than the standard value, it may indicate that the paint thickness is insufficient or there are uncoated areas on the coating surface. In actual painting, the reflectivity standard value of the painted area should be less than or equal to 10%. When the reflectivity is higher than the standard value, it indicates that the paint layer in the painted area is too thin or uneven, and is judged as an unqualified area.

[0074] Reflectivity represents the degree of reflection of incident energy on the surface of the paint layer. Reflectivity is closely related to surface finish. A higher reflectivity usually indicates that the surface of the paint layer is smooth and uniform. If the reflectivity is low, it may indicate that the surface of the paint layer is rough and the particles are unevenly distributed. Coatings with higher reflectivity are usually used for radiation protection or anti-corrosion protection. If the reflectivity of the paint layer is lower than the expected value, it may indicate that the coating is not fully covered or has insufficient adhesion. In actual painting, the emissivity of the paint layer in the painting area should be within the range of 0.8±0.05. When the emissivity in the actual test is not within the range or is lower than the range value, it indicates that the paint material is not evenly attached or has defects, and it is judged as an unqualified area.

[0075] If it is unqualified, the area of ​​the unqualified area is collected according to the paint spraying information, and the area is matched with the re-spraying threshold, including: comparing the area of ​​the unqualified area with the first re-spraying threshold, when the area of ​​the unqualified area is less than or equal to the first re-spraying threshold, the matching fails; comparing the area of ​​the unqualified area with the first re-spraying threshold, when the area of ​​the unqualified area is greater than the first re-spraying threshold or the second re-spraying threshold, the matching is successful.

[0076] The paint quality judgment and re-spraying scheme ensures that the paint effect of the engine cylinder block 400 meets the design requirements through multi-dimensional detection information. Specifically, after the painting is completed, the detection component 600 will conduct a comprehensive test on multiple key indicators of the cylinder block paint surface, including the thickness of the paint layer, the distribution ratio of bubbles and cracks, and the surface absorptivity, reflectivity and emissivity. First, the thickness of the paint layer is compared with the preset thickness value. If it does not match the standard value, the paint is directly judged to be unqualified; for the case judged to be unqualified, the unqualified area will be located and its area will be calculated based on the specific detected data, and the area will be matched and analyzed with the re-spraying threshold. If the area of ​​the unqualified area is less than or equal to the first re-spraying threshold, it is judged that the match fails and no re-spraying is required; if the area exceeds the first re-spraying threshold and is less than the second re-spraying threshold, it is judged that the match is successful, and an appropriate re-spraying mechanism is selected for precise re-spraying operation; and when the area of ​​the unqualified area is greater than the second re-spraying threshold, the system will enable a more efficient re-spraying method to cover the problem area. This solution optimizes the production process by accurately identifying and remedying paint problems, avoiding overspray and material waste, while ensuring the stability of paint quality, providing reliable technical support for the large-scale production of Engine Block 400.

[0077] If the area of ​​the unqualified area successfully matches the supplementary spraying threshold, the corresponding spraying mechanism is used for supplementary spraying, including: when the area of ​​the unqualified area is greater than the first supplementary spraying threshold and less than the second supplementary spraying threshold, the second spraying mechanism 320 is used for supplementary spraying; when the area of ​​the unqualified area is greater than the second supplementary spraying threshold, the first spraying mechanism 310 is used for supplementary spraying. The first supplementary spraying threshold and the second supplementary spraying threshold are both the proportion of the supplementary spraying area in the actual spraying area. In this embodiment, it is assumed that the engine cylinder block 400 to be painted is a six-cylinder engine cylinder block 400, and its spraying area is approximately 2m 2 .

[0078] Generally speaking, when the re-spraying area is less than 1% of the actual spraying area, you can consider not re-spraying directly. If the defect area is extremely small and has no obvious effect on the functionality (such as anti-corrosion, anti-rust, insulation, etc.) or appearance of the product, it can be ignored to avoid wasting materials and time. In spray painting inspection, a defect area of ​​less than 1% may fall within the error range of the inspection equipment and cannot significantly affect the overall uniformity and quality stability of the spray painting effect.

[0079] When the re-spraying area accounts for more than 1% of the actual spraying area, it can usually be considered that only partial re-spraying is required.

[0080] In this case, there are mostly small defects (such as small bubbles, slight thickness deficiency or small cracks), and the quality requirements can be met by fine spraying, with little cost and time impact. The second spraying mechanism 320 can perform fine spraying.

[0081] When the repainted area accounts for more than 15% to 20% of the actual painted area, it is usually necessary to consider repainting the entire surface. This is because large-scale repainting may result in uneven paint layers, affecting the overall surface quality, and even causing insufficient adhesion between coats or inconsistent appearance.

[0082] Therefore, 1% is set as the first supplementary injection threshold, and 15% is set as the second supplementary injection threshold.

[0083] Example 3

[0084] In this embodiment, a calculation formula for the required materials for re-spraying is provided, which is used to quantitatively calculate the required materials for re-spraying according to different re-spraying materials to reduce waste. It can be used as a basis for optimizing material distribution and saving costs during the painting process.

[0085] Therefore, in this embodiment, the material mass required for supplementary spraying is calculated by the following formula:

[0086]

[0087] M spray Material required for re-spraying, unit: g.

[0088] S d is the density of the paint material, unit: g / cm 3 .

[0089] The density of spray paint materials usually varies according to their type and purpose. Common spray paint materials include paint, powder coating, ceramic coating, etc., and their density varies greatly. For example, the density of ordinary solvent-based paints (such as acrylic paint and epoxy paint) is usually 1.0-1.5g / cm 3 Powder coatings are usually used for electrostatic spray painting. Their density is affected by factors such as material type and particle size. Their density is between 1.2-1.8 g / cm 3 For high temperature wear-resistant coatings or anti-corrosion coatings, the density of spray paint materials commonly used in engine parts, aerospace, petrochemicals and other fields is relatively high, generally 3.0-4.5g / cm 3 ; The density of metal coatings, such as aluminum, zinc or titanium, varies greatly, depending on the metal material used. For example, the density of aluminum coating is about 2.7g / cm 3 ; The density of steel is about 7.8g / cm 3 Through the painting operation of different paint materials, according to the density of the paint materials, it can help to calculate the consumption of paint materials more accurately, which is especially useful in designing the painting process and estimating the production cost.

[0090] In this embodiment, a high temperature wear-resistant coating or a corrosion-resistant coating material is used for painting, so S d Take 4.0g / cm 3 .

[0091] A def , i is the painting area of ​​the i-th unqualified area, unit: m 2 In the calculation of this embodiment, the areas of different unqualified areas need to be added together; for example, the area of ​​the first unqualified paint spraying area is 0.05m 2 ; The area of ​​the second unqualified painting area is 0.03m 2 ; The area of ​​the third unqualified painting area is 0.04m 2 .

[0092] T std is the target paint thickness, unit: mm; in this embodiment, the target paint thickness is 1 mm.

[0093] T act，i is the actual paint thickness of the ith unqualified area; in the calculation in this embodiment, it is necessary to add the difference between the thickness of different unqualified areas and the thickness threshold; for example, the thickness of the first unqualified paint area is 0.08 mm; the thickness of the second unqualified paint area is 0.06 mm; the thickness of the third unqualified paint area is 0.07 mm.

[0094] therefore:

[0095]

[0096] therefore:

[0097]

[0098] Substitute into the formula:

[0099] M spray =4.0g / cm 3 0.12m 2 0.09mm=43.2g

[0100] Therefore, when the spraying area is 0.12m 2 When the density of the spray paint material is 4.0g / cm 3 When the total thickness of the spraying is 0.09mm, at least 43.2g of spraying material is needed for spraying. In actual application, it can also be adjusted according to actual needs.

[0101] Since the total painting area of ​​the engine block 400 in this embodiment is 2m 2 , the spraying area is 0.12m2 , accounting for 6% of the total painting area, which is greater than the first re-spraying threshold and less than the second re-spraying threshold, and the unqualified painting area is re-sprayed by the second painting mechanism 320. This calculation result can help production personnel accurately adjust the re-spraying amount to avoid waste, and at the same time provide a basis for production planning and cost control.

[0102] In this embodiment, the amount of material required for the re-spraying area can be accurately calculated through the re-spraying material consumption estimation formula to avoid unnecessary material waste. By calculating the actual paint thickness difference in the unqualified area, repeated painting of the entire surface is avoided, so that only the defective area is repaired. In this way, the use of materials can be effectively controlled while ensuring quality, and unnecessary repeated painting can be avoided. Accurately calculating the amount of material required for re-spraying can help the production management department better control production costs. In the production process, paint materials are an important cost component, especially in large-scale production. If the consumption of coating materials cannot be effectively controlled, it will put great pressure on the overall cost. The re-spraying material consumption estimation formula can ensure that material consumption is within a reasonable range and avoid waste by quantifying the demand for re-spraying materials.

[0103] Furthermore, accurate estimates of re-spray material consumption can provide data support for optimization of the painting process. If the estimated results show that material consumption in certain areas is abnormally high, it may indicate problems in the painting process, such as uneven paint thickness, insufficient coating adhesion, or deviations in the painting equipment. By analyzing this data, technicians can adjust painting parameters or improve equipment to improve the stability and quality of the painting process and reduce the need for subsequent re-spraying. Estimating the amount of material required for re-spraying can also provide a basis for quality control. In the production process, re-spraying operations are usually part of quality control. Excessive re-spraying may mean that the painting process is unstable or the frequency of unqualified quality is high. By accurately calculating the amount of material required for re-spraying, better quality traceability can be carried out, potential quality problems can be discovered, and timely corrective measures can be taken.

[0104] Material waste during the painting process not only increases production costs, but may also burden the environment. By optimizing the consumption of re-spraying materials and reducing the use of painting materials, it can also reduce the generation of waste materials and reduce environmental pollution, thereby promoting the sustainable development of enterprises and meeting environmental protection requirements.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An engine cylinder body painting device that can be adjusted at multiple angles, characterized in that: It comprises an adjustable platform (200) and a paint spraying mechanism arranged in a paint spraying room (100); the adjustable platform (200) is used to fix the engine cylinder block (400) and comprises at least two degrees of freedom of adjustment, and the paint spraying mechanism comprises at least three degrees of freedom of adjustment; The paint spraying mechanism is arranged on the top of the paint spraying room (100) via a track mechanism, and the position can be adjusted within a preset range via the track mechanism; the paint spraying mechanism is also provided with a detection component (600) for detecting whether the paint spraying on the engine cylinder body (400) is qualified; The engine cylinder body (400) can be moved to a preset position via the adjustable carrier (200) and a painting operation can be performed via the painting mechanism; a spray head (331) provided on the painting mechanism is provided with a safety distance from the engine cylinder body (400).

2. The engine cylinder body painting device with multi-angle adjustment according to claim 1, characterized in that: The adjustable carrier (200) moves based on a displacement guide rail (110) arranged at the bottom of the spray booth (100); The adjustable carrier (200) comprises a frame (210) connected to the displacement guide rail (110) and auxiliary wheels arranged around the frame (210); The frame (210) is provided with a mounting plate (220) and a loading platform (230) that can rotate based on the mounting plate (220).

3. The engine cylinder body painting device capable of being adjusted at multiple angles according to claim 1, characterized in that: The paint spraying mechanism comprises a first paint spraying mechanism and a second paint spraying mechanism; The first paint spraying mechanism is provided with an annular paint spraying pipe (311), and the inner circle of the annular paint spraying pipe (311) is provided with a plurality of spray heads (331) at even intervals; the detection component (600) is also provided on the inner circle of the annular paint spraying pipe (311); In the same period of time, the first paint spraying mechanism or the second paint spraying mechanism is used to spray paint the engine cylinder body (400); When the first paint spraying mechanism or the second paint spraying mechanism performs a paint spraying operation on the engine cylinder body (400), the second paint spraying mechanism or the first paint spraying mechanism is located in a preset safety zone.

4. The engine cylinder body painting device capable of being adjusted at multiple angles according to claim 3, characterized in that: The track mechanism comprises a main track (510) and a first moving mechanism (520) and a second moving mechanism (530) arranged on the main track (510); The first moving mechanism (520) and the second moving mechanism (530) can both move based on the main track (510); The first paint spraying mechanism is arranged on the first moving mechanism (520); the second paint spraying mechanism is arranged on the second moving mechanism (530); A first safety zone (511) and a second safety zone (512) are respectively provided at both ends of the main track (510); when the first paint spraying mechanism or the second paint spraying mechanism is in operation, the second paint spraying mechanism is located in the second safety zone (512) or the first paint spraying mechanism is located in the first safety zone (511); and a working zone (513) is located between the first safety zone (511) and the second safety zone (512).

5. The engine cylinder body painting device capable of being adjusted at multiple angles according to claim 4, characterized in that: The main track (510) is arranged along the transverse direction of the spray booth (100) and is parallel to the displacement guide rail (110); The first moving mechanism (520) comprises a first moving frame (521) and a second moving frame (522) arranged on the first moving frame (521); both ends of the first moving frame (521) are connected to the main track (510); The second moving mechanism (530) and the first moving mechanism (520) are configured in the same manner.

6. A method for detecting a spray paint effect, characterized in that: include: Performing a painting operation on the engine cylinder block (400) by using the first painting mechanism (310); After the painting operation is completed, the detection component (600) detects the painting information of the engine cylinder body (400); Judging whether the painting operation is qualified according to the detected painting information; If it is unqualified, the area of ​​the unqualified area is collected according to the painting information, and the area is matched with the re-spraying threshold; If the area of ​​the unqualified area successfully matches the re-spraying threshold, the corresponding spraying mechanism will be used for re-spraying.

7. A method for detecting a spray paint effect according to claim 6, characterized in that: The step of detecting the paint spraying information of the engine cylinder body (400) by the detection component (600) after the paint spraying operation is completed comprises: Detecting the thickness of the painted surface of the engine cylinder block (400) by means of the detection component (600); Detecting bubbles on the painted surface of the engine cylinder block (400) by means of the detection component (600); Detecting cracks on the painted surface of the engine cylinder block (400) by means of the detection component (600); Detecting the absorption rate of the painted surface of the engine cylinder block (400) by means of the detection component (600); Detecting the reflectivity of the painted surface of the engine cylinder block (400) by means of the detection component (600); The emissivity of the painted surface of the engine cylinder block (400) is detected by the detection component (600).

8. A method for detecting a spray paint effect according to claim 7, characterized in that: The step of judging whether the painting operation is qualified according to the detected painting information includes: Comparing the thickness of the painted surface of the engine cylinder block (400) with a thickness threshold, and failing if the thickness of the painted surface of the engine cylinder block (400) is less than the thickness threshold; Comparing the area ratio of bubbles and cracks on the painted surface of the engine cylinder block (400) with the total painted area, and if the parameters of the bubbles and cracks do not match the corresponding standard value range, the engine cylinder block (400) is unqualified; The absorptivity, reflectivity and emissivity of the painted surface of the engine cylinder block (400) are compared with standard values ​​respectively; if any one of the absorptivity, reflectivity and emissivity of the painted surface of the engine cylinder block (400) does not match the standard value range, the engine cylinder block (400) is unqualified.

9. A method for detecting a spray paint effect according to claim 6, characterized in that: If the product is unqualified, the area of ​​the unqualified area is collected according to the painting information, and the area is matched with the re-spraying threshold, including: Comparing the area of ​​the unqualified region with a first re-spraying threshold, when the area of ​​the unqualified region is less than or equal to the first re-spraying threshold, the matching fails; The area of ​​the unqualified region is compared with the first supplementary spraying threshold, and when the area of ​​the unqualified region is greater than the first supplementary spraying threshold or the second supplementary spraying threshold, the match is successful.

10. A method for detecting spray paint effects according to claim 9, characterized in that: If the area of ​​the unqualified area successfully matches the re-spraying threshold, the corresponding spraying mechanism is used to perform re-spraying, including: When the area of ​​the unqualified region is greater than the first supplementary spraying threshold and less than the second supplementary spraying threshold, the second painting mechanism (320) is used to perform supplementary spraying; When the area of ​​the unqualified region is greater than the second re-spraying threshold, re-spraying is performed through the first painting mechanism (310).

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