Process method for cleaning engine cylinder body

Abstract

The invention provides a process method for cleaning an engine cylinder block. The process method is used for achieving efficient cleaning and treatment of multiple types of cylinder blocks. The method comprises the four steps of feeding positioning, cleaning process, dry surface treatment and box closing and discharging, wherein a cylinder body is conveyed through a feeding automatic conveying roller way, and an industrial robot recognizes a cleaning object and selects a corresponding program by means of a multi-model sensor; the cylinder bodies are grabbed to be cleaned in sequence; drying through a vacuum dryer after cleaning, and treating the surface through an upper and lower cylinder body water blowing mechanism; and finally, box closing is completed, and discharging is conducted through the discharging roller way. The vacuum drying and water blowing combined mode is adopted, water stain residues are completely eradicated, and neglected loading, wrong loading and collision damage caused by manual operation are avoided. And the flexible design supports rapid remodeling, the downtime is shortened, and the production efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine cylinder block cleaning, in particular to a process method for cleaning engine cylinder blocks. BACKGROUND

[0002] In the field of engine manufacturing, the cylinder block as a core component, its cleaning process has an important influence on product quality and production efficiency. The traditional engine cylinder block cleaning process method usually adopts centralized cleaning unit, these devices can only be used for cleaning operation of single type cylinder block. Due to the strong speciality of equipment design, different types of cylinder block need to be equipped with different cleaning equipment, which leads to the lack of flexibility of production line.

[0003] At the same time, the traditional cleaning process lacks response mechanism when the equipment fails, and can only be handled by stopping, which seriously affects the continuity and efficiency of production. In addition, the frequent product change requirements make the cleaning unit need to be purchased or installed again, which increases the cost burden and time consumption of enterprises. There are also problems such as insufficient cleaning accuracy, low automation degree and more manual intervention in the prior art, for example, manual loading and unloading of cylinder block is easy to cause missing, misloading or product collision damage, which further reduces the reliability and consistency of the cleaning process. SUMMARY

[0004] The purpose of the present application is to provide a process method for cleaning engine cylinder blocks, which realizes efficient cleaning of multiple types of cylinder blocks through flexible design and intelligent control, and improves the universality and production efficiency of the cleaning process.

[0005] To solve the above technical problems, the technical solution adopted by the present application is:

[0006] A process method for cleaning engine cylinder blocks, comprising the following steps:

[0007] S1 feeding and positioning: two cylinder blocks of the same type are sent into the upper cylinder block positioning mechanism and the lower cylinder block positioning mechanism respectively through the feeding automatic conveying roller; after receiving the feeding signal, the industrial robot identifies the cleaning object through the multi-type sensor installed on the robot gripper, and selects the corresponding cleaning program according to the identification result. The multi-type sensor can realize automatic identification through detection of the outer shape characteristics of the cylinder block, so as to determine the specific type of the target cylinder block.

[0008] S2 cleaning process: the industrial robot grasps the identified engine block, and sequentially puts it into the first low-pressure cleaning machine, the high-pressure cleaning machine and the second low-pressure cleaning machine for cleaning; wherein the high-pressure cleaning machine and the second low-pressure cleaning machine are responsible for cleaning the 4H20 around the cylinder and the 380Y upper cylinder, and the first low-pressure cleaning machine is specially used for cleaning the 380Y lower cylinder. During the cleaning process, the robot cleaning unit control cabinet receives the interaction signals of each device, and automatically selects the corresponding cleaning process program according to the signal processing result. The cleaning process program is preset and stored by the robot cleaning unit control cabinet according to the cylinder model and cleaning requirements, and specifically includes cleaning time, cleaning pressure and cleaning liquid type and other parameters.

[0009] S3 drying and surface treatment: after cleaning, the industrial robot carries the engine block to the upper cylinder discharging mechanism or the lower cylinder discharging mechanism; the discharging roller way sends the cylinder into the vacuum drying machine for drying treatment, and the vacuum environment is used to promote the uniform diffusion of water; the dried cylinder enters the lower cylinder water blowing mechanism and the upper cylinder water blowing mechanism to perform water blowing treatment on the surface of the cylinder, so as to realize the effect of no water stain residue. The vacuum drying machine uses negative pressure environment and maintains constant temperature through heating device, so as to ensure uniform and residue-free evaporation of water.

[0010] S4 box combining and discharging: the upper and lower cylinders after drying and water blowing treatment are sent into the upper and lower cylinder box combining mechanism to complete the box combining operation; the combined cylinder flows out of the automatic cleaning unit workstation through the discharging automatic conveying roller way. The upper and lower cylinder box combining mechanism ensures accurate alignment of the upper and lower cylinders through mechanical positioning device and pressure sensor, so as to avoid misloading or missing loading.

[0011] The industrial robot can identify different models of engine blocks such as 4H20 around the cylinder and 380Y upper and lower cylinders through the multi-model sensors installed on the gripper, and select the corresponding cleaning program. The multi-model sensor includes a laser range finder and an image recognition module, which generates an identification signal by scanning the outline and size of the cylinder, and the robot cleaning unit control cabinet calls the preset cleaning program according to the signal. In addition, each cleaning device and auxiliary mechanism is independently operated and connected in multi-machine communication, and is designed flexibly to adapt to the cleaning needs of different models of engine blocks.

[0012] Further, the vacuum drying machine is used to dry the cleaned cylinder, and the lower cylinder water blowing mechanism and the upper cylinder water blowing mechanism are used to blow water on the surface of the cylinder, so as to ensure that there is no water stain residue on the surface of the cylinder. The vacuum drying machine reduces the air pressure in the cavity through the negative pressure suction device, and at the same time uses the heating element to maintain a constant temperature environment of 60-80°C, so as to promote rapid evaporation and uniform diffusion of water; the lower cylinder water blowing mechanism and the upper cylinder water blowing mechanism use high-speed airflow nozzles to direct the cylinder surface to eliminate residual water droplets.

[0013] Further, the upper cylinder body positioning mechanism, the lower cylinder body positioning mechanism, the first low-pressure cleaning machine, the high-pressure cleaning machine, the second low-pressure cleaning machine, the robot cleaning unit control cabinet, the industrial robot, the upper cylinder body unloading mechanism, the lower cylinder body unloading mechanism, the vacuum drying machine, the lower cylinder body water blowing mechanism, the upper cylinder body water blowing mechanism, the upper and lower cylinder body combination mechanism and the robot gripper work cooperatively, support the quick realization of the automatic cleaning unit after the replacement of the engine cylinder body clamp. The quick change capability is realized through the standardized interface design, and the connection components between the devices adopt unified mechanical interfaces and electrical interfaces, so that the device position or parameter setting does not need to be adjusted again when the clamp is replaced.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The cleaning process method has multi-model applicability, the industrial robot can store multiple sets of cleaning programs, and the programs can be freely selected according to different models of engine cylinder bodies, so that cleaning operations on various models of engine cylinder bodies can be realized. The cleaning process method has assembly degree adaptability, through the design of a clamp conforming to the universality of 4H20 upper and lower cylinder bodies and 380Y upper and lower cylinder bodies, the robot gripper can grasp cylinder bodies of different assembly degrees according to the maximum stroke design, so that interference in the cleaning process is avoided. The present application combines vacuum drying and water blowing treatment to ensure that there is no water stain residue on the surface of the engine cylinder body, and to avoid the problems of missing, misplacing and product collision damage caused by manual operation. The present application supports quick change through flexible design, reduces downtime caused by frequent replacement of cleaning objects, and improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0018] Figure 2 It is a top view of the present application. Figure 1

[0019] Reference signs:

[0020] ​1 - upper cylinder body to position mechanism, 2 - lower cylinder body to position mechanism, 3 - first low pressure cleaning machine, 4 - high pressure cleaning machine, 5 - second low pressure cleaning machine, 6 - robot cleaning unit control cabinet, 7 - industrial robot, 8 - upper cylinder body discharging mechanism, 9 - lower cylinder body discharging mechanism, 10 - vacuum drying machine, 11 - lower cylinder body water blowing mechanism, 12 - upper cylinder body water blowing mechanism, 13 - upper and lower cylinder body combining mechanism, 14 - robot gripper. DETAILED DESCRIPTION

[0021] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0022] In the description of the embodiments of the present application, it needs to be understood that the terms "length", "vertical", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0023] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0024] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0025] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present application. In addition, the embodiments of the present application can refer to reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or arrangements discussed.

[0027] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] Embodiment 1:

[0029] Referring to Figure 1 and Figure 2 , the present embodiment discloses a process method for engine cylinder block cleaning, which is suitable for the automatic cleaning operation of 4H20 and 380Y upper and lower cylinder blocks. Through the cooperative work of industrial robot 7, multi-model sensors, cleaning equipment and auxiliary mechanisms, a high-efficiency, flexible and widely applicable cleaning process is realized.

[0030] Among them, the upper cylinder block positioning mechanism 1 and the lower cylinder block positioning mechanism 2 are respectively located at the end of the automatic feeding roller way, used to receive two types of cylinder blocks conveyed from the automatic feeding roller way. The automatic feeding roller way sends two cylinder blocks of the same type to the upper cylinder block positioning mechanism 1 and the lower cylinder block positioning mechanism 2 according to the predetermined rule, ensuring that the cylinder block completes the preliminary positioning before entering the cleaning process. The industrial robot 7 is installed near the robot cleaning unit control cabinet 6, and the robot gripper 14 is equipped with multi-model sensors, including a laser range finder and an image recognition module, which generates an identification signal by scanning the features of the cylinder block. After receiving these identification signals, the robot cleaning unit control cabinet 6 selects the corresponding cleaning process according to the preset program, thereby realizing the automatic identification and classification processing of different types of engine cylinder blocks.

[0031] The specific cleaning steps are as follows:

[0032] S1 feeding and positioning stage: the feeding automatic conveying roller conveys the cylinder to be cleaned to the upper cylinder positioning mechanism 1 and the lower cylinder positioning mechanism 2. When the cylinder reaches the designated position, the feeding automatic conveying roller starts to adjust the position of the cylinder to meet the requirements of the subsequent cleaning process. The industrial robot 7 identifies the type of the cylinder through the multi-model sensor on the robot gripper 14 and transmits the identification result to the robot cleaning unit control cabinet 6. The robot cleaning unit control cabinet 6 calls the preset cleaning program according to the received signal, such as setting different cleaning parameters for 4H20 and 380Y cylinders, including cleaning time, cleaning pressure and cleaning liquid type, etc. This process ensures that the cleaning process can adapt to the needs of different types of cylinders, while avoiding errors caused by manual intervention.

[0033] S2 cleaning process: the industrial robot 7 picks up the cylinder that has been preliminarily positioned and places it into the first low-pressure cleaning machine 3, the high-pressure cleaning machine 4 and the second low-pressure cleaning machine 5 in turn for cleaning operation. For 4H20 and 380Y upper cylinders, high-pressure cleaning machine 4 and second low-pressure cleaning machine 5 are used for cleaning; while for 380Y lower cylinder, the first low-pressure cleaning machine 3 is used to complete the cleaning task. During the cleaning process, the robot cleaning unit control cabinet 6 receives real-time interactive signals from each cleaning device, such as cleaning liquid flow, cleaning pressure and cleaning time, etc., and dynamically adjusts the cleaning process parameters according to these signals to ensure that the cleaning effect reaches the best state. After cleaning, the industrial robot 7 carries the cylinder to the upper cylinder discharge mechanism 8 or the lower cylinder discharge mechanism 9, preparing for the next stage of drying and surface treatment.

[0034] S3 drying and surface treatment stage, the cylinder is sent to the vacuum dryer 10 for drying treatment. The vacuum dryer 10 reduces the air pressure in the cavity through the negative pressure suction device, and at the same time uses heating elements to maintain a constant temperature environment of 60-80℃, so as to promote the rapid evaporation and uniform diffusion of water. The dried cylinder then enters the lower cylinder water blowing mechanism 11 and the upper cylinder water blowing mechanism 12, which uses high-speed airflow nozzles to blow the surface of the cylinder in a directional manner to eliminate residual water droplets. This process ensures that there is no water stain left on the surface of the cylinder, meeting the high cleanliness requirement. The design of the lower cylinder water blowing mechanism 11 and the upper cylinder water blowing mechanism 12 fully considers the features of the cylinder shape, and the angle and position of the nozzles are accurately calculated to ensure that the water blowing effect covers the entire surface of the cylinder. In addition, the support structure is used to fix the cylinder to prevent it from moving during the water blowing process, further improving the cleaning quality.

[0035] S4 The upper and lower cylinder bodies after drying and water blowing are sent to the upper and lower cylinder body closing mechanism 13 to complete the closing operation. The upper and lower cylinder body closing mechanism 13 ensures accurate positioning of the upper and lower cylinder bodies through mechanical positioning devices and pressure sensors, avoiding the occurrence of misloading or missing loading problems. The closed cylinder body flows out of the automatic cleaning unit workstation through the discharging automatic conveying roller way, completing the entire cleaning process. The maximum stroke design of the robot gripper 14 can adapt to cylinder bodies of different assembly levels, ensuring that interference does not occur during the grabbing process. In addition, the multi-model sensors installed on the robot gripper 14 generate identification signals by scanning the profile and size of the cylinder body, further improving the flexibility and reliability of the cleaning process.

[0036] The multi-model sensors installed on the robot gripper 14 can identify different models of engine cylinder bodies such as 4H20 and 380Y upper and lower cylinder bodies, and select the corresponding cleaning program. The multi-model sensors include a laser range finder and an image recognition module, which generate identification signals by scanning the profile and size of the cylinder body. The robot cleaning unit control cabinet 6 calls the preset cleaning program according to the signals. In addition, each cleaning device and auxiliary mechanism operates independently and realizes multi-machine communication connection, and adopts flexible design to adapt to the cleaning needs of different models of engine cylinder bodies. This design not only improves the cleaning efficiency, but also significantly reduces the downtime caused by frequent replacement of cleaning objects.

[0037] The invention uses a vacuum dryer 10 to dry the cleaned cylinder body, and combines a lower cylinder body water blowing mechanism 11 and an upper cylinder body water blowing mechanism 12 to blow water on the surface of the cylinder body, ensuring that there is no water stain left on the surface of the cylinder body. The vacuum dryer 10 reduces the air pressure in the cavity through a negative pressure suction device, and uses a heating element to maintain a constant temperature, promoting uniform evaporation of moisture. The lower cylinder body water blowing mechanism 11 and the upper cylinder body water blowing mechanism 12 use high-speed airflow nozzles to direct the cylinder body surface to eliminate residual water droplets. This combined drying and water blowing treatment significantly improves the cleaning quality and avoids the problems of missing loading, misloading and product collision damage caused by improper manual operation in traditional cleaning methods.

[0038] In the present application, the upper cylinder body positioning mechanism 1, the lower cylinder body positioning mechanism 2, the first low-pressure cleaning machine 3, the high-pressure cleaning machine 4, the second low-pressure cleaning machine 5, the robot cleaning unit control cabinet 6, the industrial robot 7, the upper cylinder body unloading mechanism 8, the lower cylinder body unloading mechanism 9, the vacuum dryer 10, the lower cylinder body water blowing mechanism 11, the upper cylinder body water blowing mechanism 12, the upper and lower cylinder body combining mechanism 13 and the robot clamping jaw 14 work together to support the rapid realization of the automatic cleaning unit after the engine cylinder body clamp is replaced. The rapid change capability is realized through the design of a standardized interface, and the connection components between each device adopt unified specifications of mechanical interfaces and electrical interfaces, ensuring that the equipment position or parameter setting does not need to be adjusted again when the clamp is replaced. This design greatly improves production efficiency and reduces downtime caused by changeover.

[0039] The present application provides a high-efficiency, flexible and widely applicable engine cylinder body cleaning process method through the above technical solution, solves the problems of single model limitation, low cleaning efficiency and changeover difficulty in traditional cleaning process, and has significant technical progress and application value.

[0040] Due to the difficulty of completely removing the residual moisture in the complex cavity structure, the traditional vacuum drying has limited effect on the micro-porous structure. In some preferred embodiments, an array of acoustic wave generators is integrated into the inner wall of the drying cavity. The acoustic wave generators generate high-frequency vibration waves of 18-25 kHz, which make the residual moisture resonate and detach from the surface of the cylinder body under negative pressure environment.

[0041] Further, the sound pressure level of the acoustic wave generator is 140-150 dB, and the vibration direction is at an angle of 30° with the main axis of the cylinder body.

[0042] In practical application, the acoustic resonance system is started during the vacuum drying stage. The specific parameters are: acoustic frequency: 22 kHz, optimized for 380Y cylinder micro-porous structure, action time: 90 seconds, sound pressure distribution: enhanced to 155 dB in the cylinder crank hole area. This embodiment uses acoustic resonance to make micron-sized water droplets coalesce into a stream, combined with vacuum negative pressure to realize directional extraction, solving the deep hole residual problem that has existed in the industry for many years.

[0043] In the production and processing of cylinder, the quality control of cleaning link is very important. The current industry is facing a big pain point, which is the lack of real-time feedback of cleaning quality, leading to frequent missed detection problems, and then causing the rejection of the downstream process, seriously affecting the production efficiency and cost control. To solve this problem, a LIBS detection station is added to the automatic discharge conveying roller, including a pulsed laser, a spectral analyzer and a sorting mechanical arm. The pulsed laser selects a pulsed laser with a wavelength of 1064 nm. This wavelength of laser has good absorbability to the metal surface, which can effectively excite the plasma of the residual pollutants on the surface of the cylinder. The pulse energy is set to 80-100 mJ. This energy range can not only ensure the excitation of plasma spectrum with sufficient intensity to meet the detection requirements, but also avoid damage to the surface of the cylinder caused by excessive energy. The spectral analyzer is specially designed for detecting the residual amount of Fe, Al and Ca elements.

[0044] After the cylinder is cleaned, the residual of these elements is often the key indicator to measure the cleaning quality. Fe element may come from iron filings left over in the processing process, Ca element may come from impurities in the cleaning solution, etc. Through accurate detection of these elements, the cleaning effect can be fully reflected. The sorting mechanical arm is responsible for the automatic diversion of cylinder with excessive cleanliness. When the detection station determines that the cleanliness of the cylinder does not meet the standard, the sorting mechanical arm can quickly respond to separate the cylinder with excessive cleanliness from the normal production flow to avoid its entering the downstream process and causing rejection, realizing the automation of quality control closed loop.

[0045] In actual use, the laser beam is precisely focused on the surface of the cylinder crankshaft hole, and the spot diameter is controlled to be 0.3 mm. This small spot can realize accurate detection of key parts and avoid missing detection of residual pollutants in small areas.

[0046] Then, the laser excites the plasma spectrum of the residual pollutants on the surface of the cylinder, and the spectral analyzer immediately collects the spectral information of the 350-650 nm waveband, which covers the characteristic spectrum of the target detection elements such as Fe, Al and Ca.

[0047] Subsequently, the system compares the collected spectrum with the standard spectrum library. When the content of Fe element is >15 ppm or the content of Ca element is >8 ppm, the detection station immediately triggers an alarm and sends a command to the sorting mechanical arm to automatically divert the cylinder with excessive cleanliness. In terms of detectable pollutants, manual sampling inspection can only detect visible particles, and has no effect on micro-element-level residues. LIBS online detection can accurately detect element-level residues, which fundamentally ensures the control accuracy of cleaning quality.

[0048] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure. Therefore, the appended claims are intended to encompass all such variations and modifications as falling within the scope of the application.

[0049] The preferred embodiments of the application described hereinabove are therefore to be considered in all respects as illustrative only and not restrictive in character, since the scope of the application includes any modifications and variations that come within the scope of the appended claims.

Claims

1. A process method for engine block cleaning, characterized by, It comprises the following steps: S1 feeding and positioning: two cylinder bodies of the same model are respectively sent to the upper cylinder body positioning mechanism and the lower cylinder body positioning mechanism through the feeding automatic conveying roller; after receiving the feeding signal, the industrial robot identifies the cleaning object through the multi-model sensor installed on the robot gripper, and selects the corresponding cleaning program according to the identification result; S2 cleaning process: the industrial robot grasps the identified engine cylinder body and sequentially puts it into the first low-pressure cleaning machine, the high-pressure cleaning machine and the second low-pressure cleaning machine for cleaning; during the cleaning process, the robot cleaning unit control cabinet receives the interaction signals of each device, and automatically selects the corresponding cleaning process program according to the signal processing result; S3 drying and surface treatment: after cleaning, the industrial robot carries the engine cylinder body to the upper cylinder body discharging mechanism or the lower cylinder body discharging mechanism; the cylinder body is sent to the vacuum dryer for drying treatment through the discharging roller; the dried cylinder body enters the lower cylinder body water blowing mechanism and the upper cylinder body water blowing mechanism for water blowing treatment on the surface of the cylinder body; S4 assembling and discharging: the upper and lower cylinder bodies after drying and water blowing treatment are sent to the upper and lower cylinder body assembling mechanism to complete the assembling operation; the assembled cylinder body flows out of the automatic cleaning unit workstation through the discharging automatic conveying roller.

2. A process for cleaning of engine cylinder block as claimed in claim 1 wherein: The multi-model sensor comprises a laser range finder and an image recognition module, which generates an identification signal by scanning the outline and size of the cylinder body.

3. A process for cleaning of engine cylinder block as claimed in claim 2 wherein: The robot cleaning unit control cabinet calls the preset cleaning program according to the identification signal, and the cleaning program comprises cleaning time, cleaning pressure and cleaning liquid type parameters.

4. A process for cleaning of engine cylinder block as claimed in claim 1 wherein: The first low-pressure cleaning machine is specially used for cleaning 380Y lower cylinder body, and the high-pressure cleaning machine and the second low-pressure cleaning machine are responsible for cleaning 4H20 cylinder body and 380Y upper cylinder body.

5. A process for cleaning of engine cylinder block as claimed in claim 4 wherein: The vacuum dryer reduces the air pressure in the cavity through the negative pressure suction device, and maintains a constant temperature environment of 60-80℃ by using a heating element.

6. A process for cleaning of engine cylinder block as claimed in claim 1 wherein: The lower cylinder body water blowing mechanism and the upper cylinder body water blowing mechanism blow the surface of the cylinder body through high-speed airflow nozzles.

7. A process for cleaning of engine cylinder block as claimed in claim 6 wherein: The upper and lower cylinder body assembling mechanism ensures the accurate positioning of the upper and lower cylinder bodies through mechanical positioning devices and pressure sensors.

8. A process for cleaning of engine cylinder block as claimed in claim 1 wherein: The industrial robot grasps the cylinder body with different assembly degrees through the gripper, and the maximum stroke of the gripper is designed to adapt to the cylinder body with different assembly degrees.

9. A process for cleaning of engine cylinder block as claimed in claim 1 wherein: The upper cylinder body positioning mechanism, the lower cylinder body positioning mechanism, the first low-pressure cleaning machine, the high-pressure cleaning machine, the second low-pressure cleaning machine, the robot cleaning unit control cabinet, the industrial robot, the upper cylinder body discharging mechanism, the lower cylinder body discharging mechanism, the vacuum dryer, the lower cylinder body water blowing mechanism, the upper cylinder body water blowing mechanism, the upper and lower cylinder body assembling mechanism and the robot gripper adopt unified mechanical and electrical interfaces.

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