Cleaning process and cleaning line for regeneration cylinder body of high-horsepower engine

Abstract

The invention relates to a high-horsepower engine regeneration cylinder body cleaning process and cleaning line, and belongs to the technical field of engine cleaning, and the process comprises the steps of ultrasonic cleaning, deburring, fixed-point cleaning, detection, laser cleaning, secondary cleaning, drying, detection offline and the like. The cleaning line comprises a feeding bearing device, a composite cleaning mechanism, a first water storage system, a fixed-point cleaning mechanism, a second water storage system, a detection area, a laser cleaning area, a hot air drying mechanism, a discharging bearing device, a plurality of conveying roller ways, a plurality of rotating roller ways and a plurality of translation roller ways, and the conveying roller ways, the rotating roller ways and the translation roller ways are connected with one another to form a whole. And the cylinder body can be transferred in each functional area to finish operation of each step. By means of the method, the scrapped high-horsepower engine cylinder body can be cleaned to achieve regeneration, direct scrapping is avoided, consumption of raw materials is reduced, and the updating cost of mine enterprise equipment is greatly reduced.

Description

Technical Field

[0001] The present invention relates to engine cleaning technology, and in particular to a regeneration cylinder block cleaning process and cleaning line for large-horsepower engines. Background Art

[0002] Large-horsepower engines are engines used in special mechanical equipment in fields such as mining, trunk logistics, ship power, oil and gas exploitation, etc., such as diesel engines of mining trucks, heavy-duty tractors and other equipment. Such engines have characteristics such as high price, large volume, and complex structure. Therefore, remanufacturing such scrapped large-horsepower diesel engines has certain market value.

[0003] For the regeneration cleaning of large-horsepower diesel engines, according to the volume of their components, it can be divided into large-piece cleaning and small-piece cleaning. Among them, the cylinder block is the largest workpiece, with a weight of about 2000 Kg and a volume of about 2055 mm × 940 mm × 725 mm. It is more difficult in all aspects such as cleaning and transportation than small workpieces: First, the cylinder block has a complex structure, with multi-dimensional cross water channels, oil channels and special-shaped chambers inside. Traditional high-pressure water cleaning or chemical cleaning methods are difficult to completely remove attachments such as carbon deposits, oil stains and metal debris. Especially in hidden areas such as deep holes and blind holes, it is easy to form cleaning blind spots, resulting in insufficient cleaning efficiency and cleanliness; Second, the cylinder block of large-horsepower engines is huge in volume and heavy in weight. Traditional cleaning equipment is difficult to achieve full-circumference automatic cleaning. Manual intervention not only has low efficiency, but also has the defect of poor consistency in cleaning quality; Third, long-term use not only generates a large amount of oil stains and carbon deposits that are difficult to clean, but also produces various complex deformations of different degrees, increasing the cleaning difficulty. These problems make the existing regeneration technology for cleaning large-horsepower engine cylinder blocks difficult to meet the requirements of industrial applications in terms of cleaning accuracy, automation degree, etc. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a regeneration cylinder block cleaning process and cleaning line applicable to large-horsepower engines, which can realize the cleaning and regeneration of large-horsepower engine cylinder blocks.

[0005] To solve the above problems, the technical solution adopted by the present invention is: A regeneration cylinder block cleaning process for large-horsepower engines, comprising the following steps: S1. Immerse the cylinder block in an ultrasonic cleaning tank filled with a cleaning liquid for ultrasonic cleaning to remove stains adhering to the cylinder block; S2. Deburr the oil passage holes of the cylinder block to remove the burrs of the oil passage holes; S3. Fixed-point cleaning: Flush the hole positions on the cylinder block with high-pressure water flow to remove stubborn stains and particles in the hole positions; S4. Detection: Inspect the cylinder block after fixed-point cleaning. If it is qualified, proceed to the following steps; if not, repeat S1 to S3. S5. Laser cleaning: Perform laser cleaning on the unclean parts of the cylinder block to remove residual stains. S6. Repeat S1 to S3 for secondary cleaning. S7. Dry the cylinder block. S8. Detect, take off the production line, and complete the cleaning of the cylinder block.

[0006] Furthermore, in S1, the temperature of the cleaning liquid is 60 - 85°C, the ultrasonic frequency is 28 - 40 kHz, the power density is 500 - 800 W / m², and the cleaning time is 3 - 5 h.

[0007] Furthermore, in S3, the water temperature is 60 - 85°C, the water flow pressure is 20 MPa, and the flushing time for each hole position is not less than 15 s.

[0008] Furthermore, in S4, the detection standards are as follows: Oil holes: Particle size less than 1 mm, cleanliness less than 45 mg; Water jacket holes: Particle size less than 2.4 mm, cleanliness less than 40 mg; Oil cooler: Particle size less than 1 mm, cleanliness less than 30 mg; Lubrication and intake passage: Particle size less than 3 mm, cleanliness less than 15 mg; Among them, cleanliness refers to the weight of the debris obtained after injecting sufficient running water into the detected hole position, collecting the running water at the outlet of this hole position, and filtering; particle size refers to the maximum length of the obtained debris.

[0009] Furthermore, S5 includes: S5-1. Machine automatic laser cleaning: Use machine vision detection method to collect the surface image of the cylinder block and identify the stains on the cylinder block, and perform automated zonal laser cleaning based on the machine vision detection results; S5-2. For the cylinder block after machine automatic laser cleaning, perform manual supplementary laser cleaning.

[0010] Furthermore, in S3, after flushing the hole positions on the cylinder block, turn the cylinder block over to pour out the water, so that the water containing stains flows out of the cylinder block, and at the same time, it has an anti-rust effect.

[0011] Furthermore, in S7, use hot air to dry the cylinder block. Heat the air to 60 - 80°C through a heater, send the hot air into the cylinder block by a blower, and reheat or discharge the waste gas through a return air duct.

[0012] In addition, the present invention also provides a cleaning line for implementing the above-mentioned large-horsepower engine regeneration cylinder block cleaning process, including: A loading and receiving device for receiving the cylinder block to be cleaned; A composite cleaning mechanism connected to the loading and receiving device, which includes an ultrasonic cleaning tank for ultrasonically cleaning the cylinder block; a first water storage system for supplying cleaning liquid to the ultrasonic cleaning tank; and a deburring mechanism adjacent to the ultrasonic cleaning tank for deburring the oil passage holes of the cylinder block. The brush rod of the deburring mechanism extends into the ultrasonic cleaning tank through the side wall of the ultrasonic cleaning tank, and the brush rod is sealingly fitted with the side wall of the ultrasonic cleaning tank; A fixed-point cleaning mechanism connected to the composite cleaning mechanism for flushing the hole positions on the cylinder block; A second water storage system for supplying clean water to the fixed-point cleaning mechanism; A detection area for monitoring the cylinder block after fixed-point cleaning. The detection area is connected to the fixed-point cleaning mechanism through a conveying roller path; A laser cleaning area connected to the detection area through a conveying roller path for laser cleaning the cylinder block that has passed the first detection; The discharge end of the laser cleaning area and the composite cleaning mechanism are connected through a conveying roller path for sending the cylinder block after laser cleaning back for secondary cleaning; A hot air drying mechanism is arranged on the conveying roller path from the fixed-point cleaning mechanism to the detection area for drying the cylinder block after secondary cleaning; An unloading and receiving device connected to the detection area for outputting the cylinder block after cleaning.

[0013] Further, the loading and receiving device, several conveying roller paths, and the unloading and receiving device are sequentially connected to form a "one"-shaped main conveying line that runs through the entire cleaning line; The composite cleaning mechanism, the fixed-point cleaning mechanism, and the detection area are arranged on the first side of the main conveying line, the laser cleaning area is arranged on the second side of the main conveying line, and the hot air drying mechanism is arranged on the main conveying line; The several conveying roller paths on the main conveying line include a first translation roller path, a first rotation roller path, a second rotation roller path, a second translation roller path, and a third rotation roller path; When the first translation roller path is at the first end, it is connected to the loading and receiving device and the first rotation roller path, and when at the second end, it is connected to the discharge end of the laser cleaning area; The first rotation roller path rotates 90 degrees and then connects to the composite cleaning mechanism; The second rotation roller path rotates 90 degrees and then connects to the fixed-point cleaning mechanism; When the second translation roller path is located at the first end, it is connected to the hot air drying mechanism and the third rotating roller path at both ends respectively. When it is located at the second end, it is connected to the laser cleaning area. After the third rotating roller path rotates 90 degrees, it is connected to the inspection area, and the blanking receiving device is connected to the third rotating roller path.

[0014] Furthermore, both the loading receiving device and the blanking receiving device are cage-type flipping devices, which are used to dock with the AGV carrier and flip the cylinder block by 180 degrees. The cleaning line further includes a reject roller path arranged in parallel with the main conveyor line, and the reject roller path is arranged between the main conveyor line and the laser cleaning area. A third translation roller path is arranged in the reject roller path. When the third translation roller path is located at the first end, it is connected to the first translation roller path when it is located at the second end. When the third translation roller path is located at the second end, it is connected to the discharge end of the laser cleaning area. When the second translation roller path is located in the middle, it is connected to the starting end of the reject roller path.

[0015] The beneficial effects of adopting the above technical solutions are as follows: The large-horsepower engine regenerated cylinder block cleaning process and cleaning line provided by the present invention can clean the scrapped large-horsepower engine cylinder block to achieve regeneration, avoid direct scrapping, and reduce the consumption of raw materials (such as steel and alloy). The cost of remanufacturing a large-horsepower diesel engine is usually 50%-70% of that of a new engine, which can greatly reduce the equipment renewal cost of mining enterprises. As a heavy equipment, the successful case of remanufacturing the large-horsepower diesel engine of mining trucks can promote the development of remanufacturing technologies in the fields of construction machinery, ships, aviation, etc.

[0016] In addition, in the cleaning process of the present invention, deburring, fixed-point cleaning, and laser cleaning are carried out successively, which can give full play to the advantages of each cleaning method, form complementarity, improve the cleaning efficiency and quality, and reduce the production cost. The composite cleaning process (ultrasonic, deburring) is preferred to reduce the difficulty of subsequent cleaning and improve the overall cleaning effect. Since the existence of burrs will increase the resistance of the cleaning liquid, affect the flow and penetration of the cleaning liquid, and lead to a reduction in cleaning efficiency. After removing the burrs, the cleaning liquid can contact the surface of the workpiece more smoothly, improving the cleaning effect. The fixed-point cleaning is accurate and can handle key areas specifically. For the complex-shaped and precision-structured holes on the cylinder block, the fixed-point cleaning can flexibly adjust the cleaning parameters to ensure that each key area can be fully cleaned. Finally, the laser cleaning is used for finishing, which can efficiently remove stubborn pollutants. During the laser cleaning process, no chemical cleaning agent is used, reducing the emission of waste water and waste gas, meeting the environmental protection requirements. At the same time, the laser cleaning has a fast speed and high efficiency, and is suitable for large-scale production.

[0017] The cleaning line of the present invention organically combines composite cleaning, fixed-point cleaning, inspection, laser cleaning, and drying devices to form a complete production line, capable of efficiently implementing the regeneration cylinder cleaning process for high-horsepower engines and achieving regeneration cleaning of high-horsepower engines. A loading receiving device, a plurality of conveyor rollers, and a unloading receiving device are sequentially connected to form a "I"-shaped main conveyor line that runs through the entire cleaning line. The composite cleaning mechanism, fixed-point cleaning mechanism, inspection area, laser cleaning area, and material removal rollers are located on both sides of the main conveyor line, making the layout of the entire cleaning line reasonable and the functional areas closely connected. The use of translational rollers and rotating rollers enables smooth connection between the various functional areas, efficient and convenient cylinder transfer, and is conducive to achieving efficient and large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a process flow chart of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall structure of the cleaning line of the present invention.

[0020] Figure 3 It is a structural diagram of the composite cleaning mechanism of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the fixed-point cleaning mechanism in the present invention.

[0022] Among them: 1 feeding receiving device, 2 first translation roller, 3 first rotating roller, 4 ultrasonic cleaning tank, 4-1 proximal side wall, 4-2 distal side wall, 4-3 roller in the tank, 4-4 mounting frame, 5 first water storage system, 5-1 first water tank, 5-2 second water tank, 5-3 first filtering system, 6 deburring mechanism, 6-1 brush rod, 7 second water storage system, 7-1 third water tank, 7-2 second filtering system, 8 second rotating roller, 9 fixed-point cleaning mechanism, 9-1 cleaning box, 9-2 workpiece clamping table, 9-3 robotic arm, 9-4 transverse slide, 9-5 roller drive mechanism, 9-6 rotation drive mechanism, 10 hot air drying mechanism, 11 third rotation roller, 12 inspection area, 12-1 first inspection area, 12-2 second inspection area, 13 second translation roller, 14 automatic laser cleaning system, 15 manual laser supplementary cleaning area, 16 third translation roller, 17 unloading receiving device, 18 material removal roller, 100 cylinder body. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clear, the invention is clearly and completely described below in conjunction with specific embodiments.

[0024] Example 1 like Figure 1 As shown, a high-horsepower engine regeneration cylinder cleaning process includes the following steps: S1. Immerse the cylinder block in an ultrasonic cleaning tank filled with cleaning liquid (including the cleaning machine) for ultrasonic cleaning to remove stains such as carbon deposits and oil stains adhering to the cylinder block. Among them, the temperature of the cleaning liquid is 60 - 85°C, preferably 80°C; the ultrasonic frequency is 28 - 40 kHz, the power density is 500 - 800 W / m², and the cleaning time is 3 - 5 h. During the ultrasonic cleaning process, the water replacement ultrasonic cleaning method can be adopted to purify the cleaning liquid in real-time through circulation.

[0025] S2. Deburr the oil passage holes of the cylinder block to remove the burrs. Place the cylinder block in the ultrasonic cleaning tank, and the brush rod of the deburring mechanism passes through the ultrasonic cleaning tank to deburr the main oil passage hole and the secondary oil passage hole of the cylinder block.

[0026] S3. Fixed-point cleaning: Flush the hole positions on the cylinder block with high-pressure water flow to remove stubborn stains and particles in the hole positions. Among them, the water temperature is 60 - 85°C, preferably 80°C, the water flow pressure is 20 MPa, and the flushing time for each hole position is not less than 15 s. After flushing the hole positions on the cylinder block, turn the cylinder block over to pour out the water, so that the water containing stains flows out of the cylinder block, and at the same time, it has an anti-rust effect.

[0027] S4. Detection: Detect the cylinder block after fixed-point cleaning. If it is qualified, proceed to the subsequent cleaning steps; if it is unqualified, repeat S1 to S3. The detection standards are as follows: Oil hole: Particle size less than 1 mm, cleanliness less than 45 mg; Water jacket hole: Particle size less than 2.4 mm, cleanliness less than 40 mg; Oil cooler: Particle size less than 1 mm, cleanliness less than 30 mg; Lubrication and intake passage: Particle size less than 3 mm, cleanliness less than 15 mg; Among them, the cleanliness refers to the weight of the debris obtained after injecting sufficient running water (usually the amount of water 1 - 2 times the volume of the hole) into the detected hole position, connecting the running water at the outlet of the hole position, and filtering. The particle size refers to the maximum length of the obtained debris, which can be observed using a microscope.

[0028] S5. Laser cleaning: Perform laser cleaning on the unclean parts of the cylinder block to remove the remaining stains; The specific steps of S5 are as follows: S5-1, Automatic Laser Cleaning by Machine: The machine vision detection method is used to collect the surface image of the cylinder block and identify the stains on the cylinder block. Based on the machine vision detection system, the image of the cylinder block surface is collected, and based on the image processing algorithm, the stain area and its contour information on the workpiece surface are identified. The stains include at least one of sludge, floating rust, and carbon deposits. According to the identified stain area contour information, the surface to be cleaned is divided into multiple independent cleaning partitions; the partitioning strategy includes at least one of the following: taking each identified stain area as an independent partition, or merging adjacent stain areas into partitions according to the spatial distribution, size, or type of the stains, or dividing the surface into a grid and taking the grid cells containing stains as partitions. For each cleaning partition, at least one of the following three scanning paths is selected and generated for laser beam scanning filling according to its contour shape, size, and / or stain characteristics: 1) Spiral scanning path: A continuous scanning path starting from a point inside the partition and expanding towards the partition boundary in a spiral trajectory or contracting from the boundary to the center; 2) Parallel reciprocating scanning path: A scanning path composed of a group of straight line segments arranged in parallel in a fixed direction and connected by turning back at the endpoints; 3) Contour offset scanning path: Starting from the contour boundary of the identified stain area, a series of nested closed circular paths are generated by offsetting the contour inwards or outwards at equal distances multiple times until the entire partition or stain area is covered. Control the laser cleaning device to perform laser cleaning operations on each cleaning partition according to the above planned scanning path. After cleaning, evaluate the cleaning effects after using different scanning paths from four dimensions: the microscopic morphology, hardness, roughness, and overall deformation of the workpiece surface. Based on the above evaluation results and combined with the actual cleaning requirements (including at least one of cleaning efficiency, cleaning quality requirements, thermal damage control requirements for the workpiece substrate, and specific stain type removal effect requirements), select or optimize the most suitable scanning path type and its parameters for cleaning partitions of specific shapes, sizes, or stain types.

[0029] S5-2, For the cylinder block that has undergone automatic laser cleaning by machine, manual supplementary laser cleaning is carried out.

[0030] S6, After completing the laser cleaning, repeat S1 to S3 for secondary cleaning.

[0031] S7, Perform drying treatment on the cylinder block; among them, hot air is used to dry the cylinder block. The air is heated to 60 - 80 °C by a heater, the hot air is sent into the cylinder block by a blower, and the waste gas is reheated or discharged through a return air duct.

[0032] S8, Inspection: If there is no dripping liquid and no water marks on the cylinder block visually inspected by the operator, it is qualified; the qualified cylinder blocks are taken off the production line, and the cleaning of the cylinder block is completed. Thus, the regenerative cleaning of the cylinder block is completed.

[0033] Example 2 AsFigures 2 to 4 A cleaning line for implementing the cleaning process described in Embodiment 1, comprising: a loading and receiving device 1, a composite cleaning mechanism, a first water storage system 5, a fixed-point cleaning mechanism 9, a second water storage system 7, a detection area 12, a laser cleaning area, a hot air drying mechanism 10, a discharging and receiving device 17, and a number of conveying roller tracks, rotating roller tracks and translation roller tracks connecting the above systems (working areas and mechanisms) to form an integrated whole. The cylinder block 100 (workpiece) can be transferred among various functional areas to complete each step of operation.

[0034] The loading and receiving device 1 is used to receive the cylinder block 100 to be cleaned transported by the AGV carrier, realizing the online feeding of the cylinder block 100 to be cleaned; the loading and receiving device 1 is a flipping cage conveying roller track, which can flip the cylinder block 100 by 180 degrees and then convey it forward.

[0035] The composite cleaning mechanism is connected to the loading and receiving device 1, and includes an ultrasonic cleaning tank 4, a first water storage system 5 and a deburring mechanism 6.

[0036] The ultrasonic cleaning tank 4 is used to perform ultrasonic cleaning on the cylinder block 100 to initially remove most of the stains; the ultrasonic frequency of the ultrasonic cleaning tank 4 is 28 - 40 kHz, and the power density is 500 - 800 W / m².

[0037] The first water storage system 5 is used to supply cleaning liquid to the ultrasonic cleaning tank 4; the first water storage system 5 includes a first water tank 5-1 and a second water tank 5-2. The first water tank 5-1 and the second water tank 5-2 are respectively connected to the ultrasonic cleaning tank 4, and both the first water tank 5-1 and the second water tank 5-2 are equipped with a first filtration system 5-3. When the ultrasonic cleaning tank 4 is working, the first water tank 5-1 supplies the prepared cleaning liquid to the ultrasonic cleaning tank 4. After the current cylinder block 100 completes composite cleaning (ultrasonic cleaning and deburring), the sewage pump sends the cleaning liquid in the ultrasonic cleaning tank 4 back to the first water tank 5-1 and filters it by the first filtration system 5-3 configured in the first water tank 5-1 for the next use; during the process of cleaning liquid filtration and recovery in the first water tank 5-1, the second water tank 5-2 supplies the prepared cleaning liquid to the ultrasonic cleaning tank 4. In this way, the first water tank 5-1 and the second water tank 5-2 supply cleaning liquid alternately, which can improve the production efficiency of the cleaning line.

[0038] As Figure 2 and Figure 3As shown, the deburring mechanism 6 is used for deburring the oil passage holes of the cylinder block 100. The deburring mechanism 6 is adjacent to the ultrasonic cleaning tank 4, that is, the deburring mechanism 6 is close to the ultrasonic cleaning tank 4. The brush rod 6-1 of the deburring mechanism 6 extends into the ultrasonic cleaning tank 4 through the distal side wall 4-2 of the ultrasonic cleaning tank 4, and the brush rod 6-1 is in sealed cooperation with the distal side wall 4-2 of the ultrasonic cleaning tank 4. Deburring in the ultrasonic cleaning tank 4 can enable the cleaning liquid to more smoothly contact the surface of the workpiece (cylinder block 100), improving the cleaning effect; at the same time, it can also reduce the oil stain adhering to the brush, increasing the service life of the brush.

[0039] As Figure 3 shown, the proximal side wall 4-1 of the ultrasonic cleaning tank 4 is a sealable door structure that can be opened and closed. A sealing strip is provided between the proximal side wall 4-1 and the side wall of the tank body of the ultrasonic cleaning tank 4. An installation frame 4-4 is fixedly provided on the tank body of the ultrasonic cleaning tank 4. A guiding mechanism in the vertical direction is provided between the proximal side wall 4-1 and the installation frame 4-4, and a driving mechanism for driving the proximal side wall 4-1 to lift vertically is provided on the installation frame 4-4.

[0040] A roller track 4-3 is provided at the bottom of the tank body of the ultrasonic cleaning tank 4. Before ultrasonic cleaning, the proximal side wall 4-1 is opened to connect the roller track 4-3 in the tank with the external conveying roller track. After the cylinder block 100 is completely conveyed into the ultrasonic cleaning tank 4 by the roller track 4-3 in the tank, the proximal side wall 4-1 is closed to seal the tank body, and then the cleaning liquid is injected.

[0041] As Figure 2 and Figure 4 shown, the fixed-point cleaning mechanism 9 is connected to the composite cleaning mechanism and is used for flushing the hole positions on the cylinder block 100. The fixed-point cleaning mechanism 9 is arranged adjacent to the composite cleaning mechanism and is closely connected to minimize the transfer distance of the cylinder block 100, which can improve efficiency and reduce costs. The second water storage system 7 is used to supply clean water to the fixed-point cleaning mechanism 9.

[0042] The fixed-point cleaning mechanism 9 includes a cleaning box 9-1 and a workpiece clamping table 9-2 arranged in the cleaning box 9-1. The workpiece clamping table 9-2 is provided with a roller track and a clamping device for clamping the workpiece. The two ends of the workpiece clamping table 9-2 are rotatably arranged and are driven by a rotary drive mechanism 9-6 to rotate the workpiece clamping table 9-2, driving the cylinder block 100 to rotate at the same time. A transverse sliding table 9-4 is fixedly arranged on one side of the workpiece clamping table 9-2, and a robotic arm 9-3 is arranged on the transverse sliding table 9-4. The robotic arm 9-3 is equipped with a high-pressure flushing nozzle for performing fixed-point cleaning on the cylinder block 100. The robotic arm 9-3 can move horizontally on the transverse sliding table 9-4. As Figure 4As shown in the figure, a slide rail and a cylinder for driving the horizontal movement of the robotic arm 9-3 are provided on the transverse slide 9-4. A roller drive mechanism 9-5 for driving the roller path on the workpiece clamping table 9-2 is also fixedly provided on the cleaning tank 9-1. A clutch mechanism is provided between the roller drive mechanism 9-5 and the power input component of the roller path. When the cylinder block 100 enters or exits, the clutch mechanism is connected, and the roller drive mechanism 9-5 drives the roller path to work; during the cleaning process, since the entire workpiece clamping table 9-2 needs to rotate, the clutch mechanism is in a disengaged state at this time.

[0043] The second water storage system 7 includes a third water tank 7-1 and a second filtration system 7-2. The third water tank 7-1 is connected to the high-pressure flushing nozzle, and at the same time is connected to the cleaning tank 9-1 through a sewage pump for recovering the wastewater in the cleaning tank 9-1 and recycling it after being filtered by the second filtration system 7-2.

[0044] The detection area 12 is used to monitor the cylinder block 100 that has undergone fixed-point cleaning. The detection area 12 is connected to the fixed-point cleaning mechanism 9 through a conveying roller path; as Figure 2 shown, the detection area 12 includes a first detection area 12-1 and a second detection area 12-2 arranged in parallel. The first detection area 12-1 and the second detection area 12-2 alternately receive the cylinder blocks 100 to be detected, ensuring that each functional area on the production line works continuously and improving production efficiency.

[0045] The laser cleaning area is connected to the detection area 12 through a conveying roller path and is used to perform laser cleaning on the cylinder blocks 100 that have passed the first detection; the laser cleaning area includes a laser automatic cleaning system 14 and a manual laser supplementary cleaning area 15. The laser automatic cleaning system 14 is equipped with a machine vision detection system. The surface image of the cylinder block 100 is collected through the machine vision detection system and the stains on the cylinder block 100 are identified, and automated zonal laser cleaning is performed based on the machine vision detection results. The laser automatic cleaning system 14 includes a rotating cage and a robotic arm. A workpiece clamping mechanism is provided inside the rotating cage, and the rotating cage rotates in cooperation with the robotic arm for automatic laser cleaning.

[0046] The manual laser supplementary cleaning area 15 is equipped with a manual laser cleaning head, and the manual laser cleaning head is operated manually to perform supplementary cleaning on the areas that have not been cleaned thoroughly.

[0047] As Figure 2 shown, in the laser cleaning area, the discharge end of the manual laser supplementary cleaning area 15 and the composite cleaning mechanism are connected through a conveying roller path for sending the cylinder blocks 100 that have undergone laser cleaning back for secondary cleaning.

[0048] The hot air drying mechanism 10 is arranged on the conveying roller path from the fixed-point cleaning mechanism 9 to the detection area 12, and is used to dry the cylinder block 100 that has undergone secondary cleaning; when the cylinder block 100 after the first fixed-point cleaning passes through the hot air drying mechanism 10, the hot air drying mechanism 10 does not work.

[0049] The blanking and receiving device 17 is connected to the detection area 12 and is used to output the cylinder block 100 after cleaning; the blanking and receiving device 17 is a flipping cage conveying roller path, which flips the cylinder block 100 by 180 degrees and then offlines it, and is transported to other working areas by an AGV carrier for waiting for assembly.

[0050] In this embodiment, as Figure 2 shown, the loading and receiving device 1, several conveying roller paths and the blanking and receiving device 17 are sequentially connected to form a "one"-shaped main conveying line that runs through the entire cleaning line; the composite cleaning mechanism, the fixed-point cleaning mechanism 9 and the detection area 12 are arranged on the first side of the main conveying line, the laser cleaning area is arranged on the second side of the main conveying line, and the hot air drying mechanism 10 is arranged on the main conveying line; the main conveying line runs through the entire cleaning line, and distributes each functional area on both sides of the main conveying line, which can reasonably utilize the space and avoid mutual interference. At the same time, the main conveying line can be directly connected to each functional area, which is convenient for the design and adjustment of the process flow and temporary process changes. The hot air drying mechanism 10 and the main conveying line are combined together. The main conveying line utilizes the tunnel of the hot air drying mechanism 10 to make it also have the function of a conveying roller path; while the hot air drying mechanism 10 also utilizes the line space of the main conveying line. The two are organically combined, saving equipment costs and improving space utilization.

[0051] As Figure 1 shown, several conveying roller paths on the main conveying line include a first translation roller path 2, a first rotation roller path 3, a second rotation roller path 8, a second translation roller path 13 and a third rotation roller path 11; among them, the first rotation roller path 3, the second rotation roller path 8 and the third rotation roller path 11 have the same structure and can rotate to achieve route switching. The first translation roller path 2 and the second translation roller path 13 have the same structure, including a translation bracket and a conveying roller path slidably arranged on the translation bracket. The conveying roller path can be translated on the translation bracket under the drive of a motor.

[0052] When the first translation roller path 2 is located at the first end, its two ends are respectively connected to the loading receiving device 1 and the first rotating roller path 3. When it is located at the second end, it is connected to the discharge end of the laser cleaning area; after the first rotating roller path 3 rotates 90 degrees, it is connected to the composite cleaning mechanism; after the second rotating roller path 8 rotates 90 degrees, it is connected to the fixed-point cleaning mechanism 9; when the second translation roller path 13 is located at the first end, its two ends are respectively connected to the hot air drying mechanism 10 and the third rotating roller path 11. When it is located at the second end, it is connected to the feeding end of the laser cleaning area; after the third rotating roller path 11 rotates 90 degrees, it is connected to the detection area 12, and the unloading receiving device 17 is connected to the third rotating roller path 11.

[0053] The cleaning line further includes a reject roller path 18 arranged in parallel with the main conveying line, and the reject roller path 18 is arranged between the main conveying line and the laser cleaning area; a third translation roller path 16 is arranged in the reject roller path 18, and the third translation roller path 16 has the same structure as the first translation roller path 2 and the second translation roller path 13. When the third translation roller path 16 is located at the first end, it is connected to the first translation roller path 2 when the first translation roller path 2 is at the second end. When the third translation roller path 16 is located at the second end, it is connected to the discharge end of the laser cleaning area; when the second translation roller path 13 is located in the middle, it is connected to the starting end of the reject roller path 18.

[0054] The cleaning line further includes an automated control system, with an industrial computer and a PLC as the center, using RFID + two-dimensional code to mark the identity information of the workpiece (cylinder block 100), connecting the above-mentioned hardware through reliable industrial communication, and completing the cleaning work of remanufacturing under the control of the automated control system.

[0055] Before officially using the cleaning line of this embodiment for cleaning, the cylinder block 100 is first automatically sprayed and pre-cleaned by the cleaning mechanism, and a soaking ultrasonic cleaning tank is separately equipped for workpieces with severe dirt and oil stains.

[0056] As Figure 2 shown, the AGV carrier transports the cylinder block tray after pre-rinsing from the disassembly area to the cleaning line. The tray stops for scanning the code, and the cylinder block 100 is transferred to the loading receiving device 1. After being flipped 180 degrees, it is conveyed to the first rotating roller path 3 through the first translation roller path 2 (at this time, the first translation roller path 2 is located at the first end); after the first rotating roller path 3 receives the cylinder block 100, it rotates 90 degrees and is connected to the in-tank roller path 4-3 of the ultrasonic cleaning tank 4, and conveys the cylinder block 100 to be cleaned into the ultrasonic cleaning tank 4 for composite cleaning (ultrasonic cleaning and deburring treatment).

[0057] After the composite cleaning is completed, the cleaning liquid in the ultrasonic cleaning tank 4 is discharged, the proximal side wall 4-1 is opened, and the cylinder body 100 returns to the first rotating roller 3. The first rotating roller 3 rotates 90 degrees to reset, and the cylinder body 100 is transported to the second rotating roller 8. After the second rotating roller 8 rotates 90 degrees, it is connected with the workpiece clamping table 9-2 of the fixed-point cleaning mechanism 9 through a conveying roller, and the cylinder body 100 is sent to the workpiece clamping table 9-2. The workpiece clamping table 9-2 is set on the rotating cage. After the workpiece clamping table 9-2 clamps the cylinder body 100 through the hydraulic mechanism, the rotary drive mechanism drives the rotating cage to rotate, and the control system controls the robotic arm 9-3 to synchronously flush the holes on the cylinder body 100.

[0058] After the fixed-point cleaning is completed, the cylinder body 100 is returned to the second rotating roller 8, the second rotating roller 8 rotates 90 degrees to reset, passes through multiple conveying rollers and passes through the hot air drying mechanism 10 and the second translation roller 13 (located at the first end at this time) and is sent to the third rotating roller 11. The third rotating roller 11 rotates 90 degrees and connects with the detection area 12 to send the cylinder body 100 to the detection area 12 for detection. The cylinder body 100 that passes the detection is returned to the second translation roller 13, and the second translation roller 13 is translated. To the second end, the cylinder body 100 is sent to the laser automatic cleaning system 14 for automatic laser cleaning. After completion, the cylinder body 100 is sent to the manual laser supplementary cleaning area 15 for manual laser supplementary cleaning. After completion, it is sent to the third translation roller 16 (now located at the second end). After the third translation roller 16 is translated to the first end, it is located on the material removal roller 18, and the cylinder body 100 is sent to the first translation roller 2 located at the second end. After the first translation roller 2 is translated to the first end, the cylinder body 100 is sent back for secondary cleaning.

[0059] The cylinder body 100 that fails the inspection is returned to the second translation roller 13, and the second translation roller 13 is translated to the third end, and is sent to the first translation roller 2 at the second end through the material removal roller 18. After the first translation roller 2 is translated to the first end, the cylinder body 100 is sent back for re-cleaning.

[0060] After the secondary cleaning, the cylinder body 100 passes through the hot air drying mechanism 10. The lifting cylinder drives the drying box down, the fan first disperses the water droplets on the cylinder body 100, and the hot air nozzle performs hot air drying. The dried cylinder body 100 is transported to the inspection area 12 for inspection. If the inspection is qualified, it returns to the third rotating roller 11, then rotates 180 degrees through the unloading receiving device 17, and is transported by the AGV to the assembly operation area, completing the cleaning and off-line.

[0061] When the cylinder body 100 needs to be inspected, the cylinder body 100 is extracted through the ejection roller 18 for subsequent processing.

[0062] The cleaning line described in this embodiment can, based on the organizational characteristics of the remanufacturing cleaning system equipment for large horsepower engines, the interaction characteristics between equipment, and the state-dependence characteristics of energy consumption, solve the problems of uncertain processing time, process route, and the coexistence of parallel and batch processing while reducing standby energy consumption and ensuring green energy conservation under system constraints.

[0063] This cleaning line has a high degree of automation. It uses pallets to carry the cylinder block 100 and automatically enters the composite cleaning mechanism and fixed-point cleaning mechanism for automatic cleaning. Through high-temperature water spray cleaning and water-changing ultrasonic cleaning, it can strongly remove stains such as product sludge, floating rust, and carbon deposits. It does not require manual operation and can automatically complete the brushing of the oil passage holes by the brush.

[0064] This cleaning line has a high degree of flexibility. The individual damage degree of the used cylinder blocks 100 of large horsepower diesel engines determines the highly variable cleaning process path, processing man-hour cost, and energy consumption. During the laser cleaning process, machine vision methods are used to plan the cleaning path, realizing automatic path planning and control and real-time feedback adjustment of process parameters. It can solve the problems of high labor intensity, low efficiency, and unstable quality in actual production during the efficient and flexible cleaning and remanufacturing process.

[0065] In view of the energy efficiency optimization problem at the remanufacturing process chain level, this invention constructs a mathematical model for energy-saving process chain production scheduling considering the uncertainty of process paths and operation times and the coexistence of parallel machines and batch processing machines, etc., thus providing a theoretical basis for reducing equipment standby energy consumption through scheduling methods.

[0066] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cleaning process for the regenerated cylinder block of a large-horsepower engine, characterized in that, The steps include: S1. Immerse the cylinder body in an ultrasonic cleaning tank filled with cleaning fluid to perform ultrasonic cleaning to remove stains attached to the cylinder body; S2. Deburring the oil passage holes of the cylinder body to remove the burrs on the oil passage holes; S3. Fixed-point cleaning: Use high-pressure water to flush the holes on the cylinder body to remove stubborn stains and particles in the holes; S4, inspection: inspect the cylinder body after the fixed-point cleaning. If qualified, proceed to the following steps. If unqualified, repeat S1 to S3; S5. Laser cleaning: Laser clean the unclean parts of the cylinder to remove residual stains; S6, repeat S1 to S3 for secondary cleaning; S7, drying the cylinder body; S8, inspection, offline, and cylinder cleaning completed.

2. The regenerative cylinder block cleaning process of a large horsepower engine according to claim 1, characterized in that, In the above-mentioned S1, the temperature of the cleaning liquid is 60-85°C, the ultrasonic frequency is 28-40kHz, the power density is 500-800W / m², and the cleaning time is 3-5h.

3. The cleaning process of the large-horsepower engine regenerative cylinder block according to claim 1 is characterized in that, In S3, the water temperature is 60-85°C, the water flow pressure is 20 MPa, and the flushing time for each hole is not less than 15 seconds.

4. A high-horsepower engine regeneration cylinder cleaning process according to claim 1, characterized in that: In said S4, the detection standard is, Oil hole: particle size less than 1mm, cleanliness less than 45mg; Water jacket hole: particle size less than 2.4mm, cleanliness less than 40mg; Oil cooler: particle size less than 1mm, cleanliness less than 30mg; Lubrication and air intake: particle size less than 3mm, cleanliness less than 15mg; Among them, cleanliness refers to the weight of the debris obtained after injecting sufficient running water into the hole to be tested and collecting the running water at the outlet of the hole and filtering; particle size refers to the maximum length of the debris obtained.

5. A cleaning process for a large-horsepower engine's regenerative cylinder block according to claim 1, characterized in that, Said S5 comprises, S5-1, automatic laser cleaning: Use machine vision detection method to collect cylinder surface images and identify stains on the cylinder body, and perform automatic zoned laser cleaning based on the machine vision detection results; S5-2, the cylinder body that has been automatically laser cleaned by the machine is manually supplemented with laser cleaning.

6. The cleaning process for the regenerated cylinder block of a large-horsepower engine according to claim 1, characterized in that, In S3, after flushing the holes on the cylinder body, the cylinder body is turned over and the water is poured out, so that the water containing stains flows out of the cylinder body, and at the same time, a rust prevention effect is achieved.

7. A cleaning process for a regenerated cylinder block of a large-horsepower engine according to claim 1, characterized in that, In S7, hot air is used to dry the cylinder body. The air is heated to 60-80° C. by a heater. The fan sends the hot air into the cylinder body, and the exhaust gas is reheated or discharged through the return air duct.

8. A cleaning line for implementing the cleaning process according to any one of claims 1-7, characterized in that, include: A loading receiving device (1) for receiving the cylinder to be cleaned; A composite cleaning mechanism is connected to the feeding receiving device (1), and includes an ultrasonic cleaning tank (4) for ultrasonically cleaning the cylinder body; a first water storage system (5) for supplying cleaning liquid to the ultrasonic cleaning tank (4); and a deburring mechanism (6) adjacent to the ultrasonic cleaning tank (4) for deburring the oil channel hole of the cylinder body, wherein the brush rod (6-1) of the deburring mechanism (6) extends into the interior of the ultrasonic cleaning tank (4) through the side wall of the ultrasonic cleaning tank (4), and the brush rod (6-1) is in sealing cooperation with the side wall of the ultrasonic cleaning tank (4); Fixed-point cleaning mechanism (9), connected to the composite cleaning mechanism, for flushing the hole positions on the cylinder block; Second water storage system (7), for supplying clean water to the fixed-point cleaning mechanism (9); Detection area (12), for monitoring the cylinder block after fixed-point cleaning, and the detection area (12) is connected to the fixed-point cleaning mechanism (9) through a conveying roller path; Laser cleaning area, connected to the detection area (12) through a conveying roller path, for laser cleaning the cylinder block that has passed the first inspection; The discharge end of the laser cleaning area and the composite cleaning mechanism are connected through a conveying roller path, for sending the cylinder block after laser cleaning back for secondary cleaning; Hot air drying mechanism (10), arranged on the conveying roller path from the fixed-point cleaning mechanism (9) to the detection area (12), for drying the cylinder block after secondary cleaning; Blank discharging and receiving device (17), connected to the detection area (12), for outputting the cylinder block after cleaning.

9. The cleaning line according to claim 8, characterized in that, The loading and receiving device (1), several conveying roller paths and the blank discharging and receiving device (17) are sequentially connected to form a "one"-shaped main conveying line running through the entire cleaning line; The composite cleaning mechanism, the fixed-point cleaning mechanism (9) and the detection area (12) are arranged on the first side of the main conveying line, the laser cleaning area is arranged on the second side of the main conveying line, and the hot air drying mechanism (10) is arranged on the main conveying line; Several conveying roller paths on the main conveying line include a first translation roller path (2), a first rotation roller path (3), a second rotation roller path (8), a second translation roller path (13) and a third rotation roller path (11); When the first translation roller path (2) is at the first end, it is connected to the loading and receiving device (1) and the first rotation roller path (3), and when at the second end, it is connected to the discharge end of the laser cleaning area; The first rotation roller path (3) rotates 90 degrees and then connects to the composite cleaning mechanism; The second rotation roller path (8) rotates 90 degrees and then connects to the fixed-point cleaning mechanism (9); When the second translation roller path (13) is at the first end, both ends are respectively connected to the hot air drying mechanism (10) and the third rotation roller path (11), and when at the second end, it is connected to the laser cleaning area; The third rotation roller path (11) rotates 90 degrees and then connects to the detection area (12), and the blank discharging and receiving device (17) is connected to the third rotation roller path (11).

10. The cleaning line according to claim 9, characterized in that, Both the loading and receiving device (1) and the blank discharging and receiving device (17) are cage-type flipping devices, for docking with the AGV carrier and flipping the cylinder block by 180 degrees; The cleaning line further includes a reject roller path (18) arranged parallel to the main conveying line, and the reject roller path (18) is arranged between the main conveying line and the laser cleaning area; A third translation roller path (16) is arranged in the reject roller path (18). When the third translation roller path (16) is at the first end, it is connected to the first translation roller path (2) at the second end, and when the third translation roller path (16) is at the second end, it is connected to the discharge end of the laser cleaning area; when the second translation roller path (13) is in the middle, it is connected to the starting end of the reject roller path (18).

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