Cleaning equipment and cleaning methods

Abstract

The present application relates to the technical field of print cleaning, and in particular to a cleaning device and a cleaning method. The cleaning device includes a host unit, a cleaning agent storage unit and an electrical processing unit. The host unit includes a rack, a loading and unloading module, a cleaning module and a pneumatically driven execution unit, the pneumatically driven execution unit is configured to perform preset actions on a target object, and the electrical processing unit is configured to control the pneumatically driven execution unit. The cleaning device uses pneumatic motion control to reduce the contact between electricity and solvents, making the cleaning process of the cleaning device safer, and the wiring of the pneumatically driven execution unit is simpler. In the cleaning method, when performing multi-stage cleaning, after the cleaning of the previous level is completed, the cleaning agent carried on the target object can be blown dry first, and then the cleaning station of the next level can be entered, so that multiple cleaning and drying can be achieved, avoiding the previous level cleaning agent from contaminating the next level cleaning agent, reducing the use of cleaning agents, and facilitating safe production management.

Description

Technical Field

[0001] The present application relates to the technical field of printed part cleaning, and in particular to a cleaning device and a cleaning method. Background Art

[0002] After printing, there is a lot of liquid resin attached to the surface of 3D printed parts, which needs to be cleaned. Since the shapes of 3D printed parts are generally very complex, the resin materials are usually mixed organic materials with high viscosity, which are difficult to clean. The existing cleaning solutions mainly include immersion cleaning and spray cleaning. Among them, spray cleaning is highly dependent on manual labor and has low cleaning efficiency. In large-scale production enterprises, immersion cleaning is still the main method. Cleaning solvents are usually divided into organic solvents (such as alcohol, IPA, ethyl acetate, etc.) and water-based solvents (such as alkaline solvents and emulsifiers, etc.). Among them, water-based solvents have low cleaning efficiency, and organic solvents are usually used for cleaning in large-scale production.

[0003] With the rapid development of the 3D printing industry, there are more and more large-scale production companies. A large amount of organic solvents are needed in the subsequent cleaning process. These solvents are basically flammable and explosive items. They are costly, have a strong pungent odor, are harmful to the human body, and the cleaning liquid is highly volatile, flammable and explosive. Large-scale use or storage is dangerous and poses a safety hazard. Existing automation technology usually uses PLC or other control modules to drive lifting platforms, conveyor chains and other transmission mechanisms for loading and unloading, and cooperates with electric and pneumatic grippers to transport products, and then replaces solvents by pumping and other methods. The entire technology requires a large number of strong and weak electrical devices. Traditional explosion-proof solutions such as intrinsically safe components cannot fully cover them, and the cost of covered devices is extremely high. Even if all replacements are covered, the meaning of automation is lost from the cost-benefit dimension.

[0004] Combining the existing automation technology and the flammable and explosive nature of cleaning solvents, the safety of the products directly produced is extremely low, and the slightest carelessness will cause major accidents. Therefore, the development of safe cleaning equipment is of great significance. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a cleaning device and a cleaning method, which mainly start from the aspect of pneumatic driving mode to overcome the technical problem of poor safety of the cleaning system in the prior art.

[0006] In the first aspect, the cleaning equipment provided by the present application includes:

[0007] The host unit includes a frame, a loading and unloading module, a cleaning module and a pneumatically driven execution unit, wherein the frame is provided with a plurality of workstations; the loading and unloading module is provided with at least one and is configured to load or unload the target object; the cleaning module is provided with a plurality of and is configured to clean the target object; the pneumatically driven execution unit is configured to perform a preset action on the target object;

[0008] a cleaning agent storage unit configured to store cleaning agents and to provide cleaning agents to each cleaning module; and

[0009] The electrical processing unit is configured to control the pneumatically driven actuator unit.

[0010] In an optional embodiment, the pneumatically driven execution unit includes a transport module, and the transport module is configured to transport the target object so that the target object moves or stays above each workstation.

[0011] In an optional embodiment, the transport module includes a first driving member and a mechanical gripper, the first driving member is configured to drive the mechanical gripper to reciprocate in a horizontal direction, and the mechanical gripper is configured to grasp or release a target object.

[0012] In an optional embodiment, each workstation is arranged at equal intervals, a plurality of mechanical grippers are arranged at equal intervals, the first driving member drives the plurality of mechanical grippers to move simultaneously, and the interval between each workstation is equal to the interval between the mechanical grippers.

[0013] In an optional embodiment, the cleaning module includes a cleaning chamber configured to store cleaning agent and clean the target object; the pneumatically driven execution unit also includes a first lifting assembly configured to drive the target object to move in an up and down direction at the cleaning module.

[0014] In an optional embodiment, the first lifting assembly includes a second driving member and a first pallet assembly, and the second driving member is configured to drive the first pallet assembly to reciprocate in a vertical direction.

[0015] In an optional embodiment, the cleaning chamber includes a chamber door, and a gap is formed at an edge of the chamber door.

[0016] In an optional embodiment, the pneumatically driven execution unit further includes a liquid disturbance device, and the liquid disturbance device is disposed at the bottom of the cleaning chamber.

[0017] In an optional embodiment, the liquid disturbance device is a bubbling device, a vortex generating device, a shaking device or a stirring device.

[0018] In an optional embodiment, an ultrasonic generating device is also provided at the bottom of the cleaning chamber.

[0019] In an optional embodiment, the workstations include at least one of a loading station, a plurality of cleaning stations, a UV light curing station, a drying station, a heat curing station and an unloading station.

[0020] In an optional embodiment, a second lifting assembly configured to drive the target object to move in the up and down directions is provided at the loading station and the unloading station.

[0021] In an optional embodiment, the second lifting assembly includes a third driving member and a second pallet assembly, and the third driving member is configured to drive the second pallet assembly to reciprocate in a vertical direction.

[0022] In an optional embodiment, the cleaning stations include at least three, and the cleaning module includes:

[0023] A first cleaning module, wherein the cleaning chamber is used to store water-based cleaning agents;

[0024] A second cleaning module, wherein the cleaning chamber is used to store a rough cleaning organic cleaning agent;

[0025] The third cleaning module has a cleaning chamber for storing fine cleaning organic cleaning agents.

[0026] In an optional embodiment, the cleaning module includes a cleaning chamber and a third lifting assembly, wherein the cleaning chamber is configured to store cleaning agent and clean the target object; the third lifting assembly is configured to drive the target object to move in the up and down directions; wherein the third lifting assembly includes a fourth driving member and a third pallet assembly, wherein the fourth driving member is configured to drive the third pallet assembly to reciprocate in the vertical direction.

[0027] In an optional embodiment, the fourth driving member includes an intrinsically safe motor and a synchronous belt connected to each other; or the fourth driving member includes an intrinsically safe motor and a screw assembly connected to each other.

[0028] In an optional embodiment, the pneumatically driven execution unit further includes a blow-drying component, which is configured to disperse the cleaning agent on the target object through airflow.

[0029] In an optional embodiment, the drying assembly includes a fifth driving member and a nozzle, the fifth driving member is configured to drive the nozzle to reciprocate in a horizontal direction, and the nozzle is configured to spray air flow toward the target object.

[0030] In an optional embodiment, the host unit further includes a cleaning agent replenishing device, which is a gravity replenishing system, an intrinsically safe electric liquid filling pump, or a pneumatic liquid filling pump.

[0031] In an optional embodiment, the gravity rehydration system comprises:

[0032] The transfer liquid adding tank is connected to the cleaning agent storage unit through a pipeline, a check valve is provided at the inlet of the transfer liquid adding tank, and a switch valve is provided at the bottom of the transfer liquid adding tank;

[0033] a vacuum generator configured to reduce the vacuum level in the transfer tank;

[0034] The liquid level switch is configured to detect whether the liquid level in the transfer liquid filling tank has reached an upper limit.

[0035] In an optional embodiment, the pneumatically driven execution unit further includes an exhaust device configured to exhaust gas in the host unit.

[0036] In an optional embodiment, the pneumatically driven execution unit further includes a pumping device configured to pump the cleaning agent in the cleaning agent storage unit to the cleaning module and discharge the cleaning waste liquid in the cleaning module.

[0037] In an optional embodiment, the cleaning device further includes an air source device, which is configured to supply air to the execution unit, and the air source device includes an air compression device or an air storage tank.

[0038] In an optional embodiment, the workstations include a loading station, an unloading station and a cleaning station; the loading and unloading modules are detachably arranged at the loading station and the unloading station, and / or the cleaning module is detachably arranged in the cleaning station.

[0039] In an optional embodiment, the loading and unloading module is a movable material cart, a continuous conveyor belt or a rotating feeding table.

[0040] In an optional embodiment, the host unit also includes an electrical box module and a positive pressure exhaust device, at least some of the weak current components are integrated into the electrical box module, and at least some of the weak current components are located in the positive pressure exhaust area formed by the positive pressure exhaust device.

[0041] In an optional embodiment, a communicating vessel type liquid level gauge is provided on the cleaning agent storage unit.

[0042] In an optional embodiment, the cleaning device further comprises:

[0043] The organic solvent monitoring unit is configured to detect the organic solvent concentration in the environment and perform emergency shutdown and / or cut off the main power supply when the organic solvent concentration exceeds a safety threshold.

[0044] In an optional embodiment, the cleaning device further includes a cleaning agent recovery module, and the cleaning agent recovery module includes:

[0045] a solidification tank having an adsorptive filter material disposed therein, the adsorptive filter material being configured to increase the local concentration of resin impurities in the cleaning agent and to perform primary filtration of the cleaning agent;

[0046] A lighting module is configured to illuminate the cleaning agent in the curing tank;

[0047] The sedimentation tank is configured to carry out sedimentation treatment on the filtered cleaning agent.

[0048] In an optional embodiment, the sedimentation tank includes a bin body, in which an oil baffle plate and a flow baffle are arranged, the oil baffle plate divides the internal space of the sedimentation tank into multiple sedimentation bins, a flow channel is arranged at the lower end of the oil baffle plate, an overflow channel is arranged above the flow baffle plate, and the overflow channel is higher than the flow channel.

[0049] In an optional embodiment, the cleaning agent recovery module further includes:

[0050] The bag filter is configured to effectively filter the cleaning agent after sedimentation treatment.

[0051] In an optional embodiment, the cleaning agent recovery module is disposed in a cabinet of the electrical processing unit, and the high-voltage module in the electrical processing unit is isolated from the cleaning agent recovery module by a partition.

[0052] In a second aspect, the embodiment of the present application further provides a cleaning method, which is implemented by the cleaning device provided in the first aspect of the present application. The cleaning method comprises: after a cleaning module completes cleaning of a target object, drying the cleaning agent carried by the target object, and then transporting the target object to a next-level cleaning module for cleaning and drying, until all cleaning modules complete cleaning and drying of the target object.

[0053] In an optional embodiment, the cleaning method further comprises:

[0054] The cleaning agent containing resin impurities is subjected to light curing treatment, during which the local concentration of the resin impurities in the cleaning agent is increased by using an adsorptive filter material, and the cleaning agent is primarily filtered by the adsorptive filter material;

[0055] The cleaning agent is subjected to sedimentation treatment so that impurities with a greater specific gravity than the cleaning agent settle below the cleaning agent, and impurities with a smaller specific gravity than the cleaning agent float above the cleaning agent, and the cleaning agent in the middle layer is recovered.

[0056] In an optional embodiment, after the step of sedimentation of the cleaning agent, the recovered cleaning agent in the middle layer is passed into a bag filter for strong filtration.

[0057] In the cleaning equipment provided in the embodiment of the present application, pneumatic motion control is adopted to reduce the contact between electricity and solvent, making the cleaning process of the cleaning equipment safer, and the wiring of the pneumatically driven execution unit is simpler. Through the cleaning method provided in the embodiment of the present application, when performing multi-stage cleaning, after the cleaning of the previous stage is completed, the cleaning agent carried by the target object can be blown dry first, and then the cleaning station of the next stage can be entered, so that multiple cleaning and drying can be achieved, and the cleaning agent of the previous stage can be prevented from contaminating the cleaning agent of the next stage, and the use of cleaning agents can be reduced, which is beneficial to safe production management. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0059] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0060] Figure 1 A schematic diagram of the structure of a cleaning device provided in an embodiment of the present application;

[0061] Figure 2 Schematic diagram of the structure of the electrical processing unit provided in the embodiment of the present application Figure 1 ;

[0062] Figure 3 An exploded structural diagram of a main unit in a cleaning device provided in an embodiment of the present application;

[0063] Figure 4 A schematic diagram of the structure of the front side of the main unit in the cleaning device provided in an embodiment of the present application;

[0064] Figure 5 A schematic diagram of the structure of the rear side of the main unit in the cleaning device provided in an embodiment of the present application;

[0065] Figure 6 A schematic diagram of the structure of the loading and unloading modules in the cleaning equipment provided in the embodiment of the present application;

[0066] Figure 7 A schematic diagram of the structure of a transport module in a cleaning device provided in an embodiment of the present application;

[0067] Figure 8 A schematic diagram of the structure of a cleaning basket provided in an embodiment of the present application;

[0068] Fig. 9An exploded structural diagram of a cleaning module in a cleaning device provided in an embodiment of the present application;

[0069] Fig.10 A longitudinal cross-sectional view of a cleaning module in a cleaning device provided in an embodiment of the present application;

[0070] Fig.11 A transverse cross-sectional view of a cleaning module in a cleaning device provided in an embodiment of the present application;

[0071] Fig.12 A schematic diagram of the three-dimensional structure of a cleaning module in the cleaning device provided in an embodiment of the present application;

[0072] Fig.13 It is a structural schematic diagram of a tooth model part for 3D printing;

[0073] Fig.14 A schematic diagram of the structure of a first lifting assembly in a cleaning module provided in an embodiment of the present application;

[0074] Fig.15 A schematic diagram of the structure of the cooperation between the first lifting assembly and the cleaning basket in the cleaning module provided in an embodiment of the present application;

[0075] Fig.16 Schematic diagram of the structure of the electrical processing unit provided in the embodiment of the present application Figure 2 ;

[0076] Fig.17 A schematic diagram of the structure of a cleaning agent recovery module provided in an embodiment of the present application;

[0077] Fig.18 A cross-sectional structural diagram of a cleaning agent recovery module provided in an embodiment of the present application;

[0078] Fig.19 A cross-sectional structural diagram of a sedimentation tank in a cleaning agent recovery module provided in an embodiment of the present application;

[0079] Fig. 20 A schematic diagram of another settling tank in a cleaning agent recovery module provided in an embodiment of the present application; and

[0080] Fig.21 Schematic diagram of the working principle of the organic solvent monitoring unit provided in an embodiment of the present application.

[0081] Reference numerals:

[0082] 100. Host unit;

[0083] 110, frame; 111, loading station; 112, cleaning station; 113, unloading station; 114, second lifting assembly;

[0084] 120. Loading and unloading module;

[0085] 130, cleaning module; 1301, first cleaning module; 1302, second cleaning module; 1303, third cleaning module;

[0086] 131, first lifting assembly; 1311, second driving member; 1312, first support plate assembly; 13121, bearing portion; 13122, first connecting portion; 13123, roller; 1313, first guide rail;

[0087] 132. Cleaning chamber;

[0088] 133, drying assembly; 1331, fifth driving member; 1332, nozzle; 1333, second connecting portion; 1334, second guide rail;

[0089] 134. Warehouse door; 135. Ultrasonic generator; 136. Liquid disturbance device; 137. Heat dissipation chamber; 138. Outer frame;

[0090] 140, handling module; 141, first driving member; 142, mechanical gripper;

[0091] 150. cleaning basket; 160. electrical box module; 170. cleaning agent replenishing device;

[0092] 200. Cleaning agent storage unit;

[0093] 300, electrical processing unit; 310, cabinet; 320, strong current module; 321, main power supply; 330, partition;

[0094] 400, cleaning agent recovery module;

[0095] 410. Solidification tank; 411. Adsorbent material;

[0096] 420, lighting module; 421, air duct box; 422, radiator; 423, light source; 424, air inlet; 425, air outlet;

[0097] 430, sedimentation tank; 431, silo; 432, oil baffle; 433, flow baffle; 434, flow passage; 435, overflow passage; 4361, first sedimentation silo; 4362, second sedimentation silo; 4363, third sedimentation silo; 437, heating module; 438, water outlet baffle;

[0098] 440, secondary filter module; 450, tertiary filter module; 460, bag filter; 470, diaphragm pump;

[0099] 500. Organic solvent monitoring unit; 510. Independent power supply; 520. Organic solvent sensor; 530. Controller; 540. Emergency stop module; 550. Contactor; 560. Relay. DETAILED DESCRIPTION

[0100] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0101] The cleaning device according to the embodiment of the present application is described below with reference to the accompanying drawings. Figure 1 As shown, the cleaning device mainly includes three parts: a main unit 100, a cleaning agent storage unit 200 and an electrical appliance processing unit 300.

[0102] The host unit 100 is used to perform specific cleaning work. The host unit 100 includes a frame 110, a loading and unloading module 120, a cleaning module 130 and a pneumatically driven execution unit, wherein the frame 110 is provided with a plurality of workstations; the loading and unloading module 120 is provided with at least one and is configured to load or unload the target object; the cleaning module 130 is provided with a plurality of and is configured to clean the target object; the pneumatically driven execution unit is configured to perform a preset action on the target object. The cleaning agent storage unit 200 is configured to store cleaning agent. The cleaning agent storage unit 200 is used to provide cleaning agent to each cleaning module 130. A communicating vessel-type liquid level gauge that does not require power supply can be provided on the cleaning agent storage unit 200 to detect the liquid level in the cleaning agent storage unit 200 and reduce safety risks. Figure 2 As shown, the electrical processing unit 300 is configured to control a pneumatically driven execution unit. The electrical processing unit 300 includes a cabinet 310 and a portion of a high-voltage module 320 encapsulated in the cabinet 310 . The high-voltage module 320 is used to supply power to the host unit 100 .

[0103] It should be noted that, in some embodiments, the host unit 100, the cleaning agent storage unit 200 and the electrical appliance processing unit 300 may be as follows: Figure 1 In some embodiments, the host unit 100, the cleaning agent storage unit 200 and the electrical processing unit 300 may be integrated together; in some embodiments, any two of the host unit 100, the cleaning agent storage unit 200 and the electrical processing unit 300 may be integrated together, and the other one may be separately arranged.

[0104] The cleaning device in the embodiment of the present application uses pneumatic motion control, which reduces the contact between electricity and solvent, making the cleaning process of the cleaning device safer. In addition, the wiring of the pneumatically driven execution unit is simpler.

[0105] In some embodiments, the pneumatically driven execution unit includes a transport module 140, which is configured to transport the target object so that the target object moves or stays above each workstation. Specifically, the transport module 140 is disposed on the frame 110, and the transport module 140 transports the target object to move above the workstation and can keep the target object above any workstation.

[0106] like Figure 7 As shown, the transport module 140 includes a first driving member 141 and a mechanical gripper 142. The first driving member 141 is configured to drive the mechanical gripper 142 to reciprocate in the horizontal direction. The mechanical gripper 141 is configured to grab or release the target object. The first driving member 142 is preferably a cylinder. The mechanical gripper 142 is located above the workstation, and is used to grab the target object from above the previous workstation and then release the target object above the next workstation. Preferably, each workstation is arranged at equal intervals, and the mechanical grippers 142 of the transport module 140 are also arranged at equal intervals. The first driving member 141 drives multiple mechanical grippers 142 to move at the same time, and the spacing between each workstation is equal to the spacing between the mechanical grippers 142. After each station forms a multi-station layout with equal spacing, when one mechanical gripper 142 faces one station, other mechanical grippers 142 can also face another station. The mechanical grippers 142 are located above each station. When the target object corresponding to each station is lifted to the highest position, the mechanical grippers 142 move to grab the corresponding target object. Multiple mechanical grippers 142 are driven by the same first driving member 141 to shift, and can simultaneously move the target object of the previous station to the next station position. After reaching the position, the corresponding station receives the target object, and the mechanical grippers 142 open to release the target object. In this way, multiple cleaning process lines can be realized to work simultaneously, and the mechanical control is relatively simple, which improves production efficiency. Preferably, the number of workstations is one more than the number of mechanical grippers 142, so that better coordination between the mechanical grippers 142 and each workstation can be achieved. For example, the main unit 100 includes five equally spaced workstations, and the transport module 140 includes four equally spaced mechanical grippers 142. During operation, the transport module 140 only needs to control the four mechanical grippers 142 to switch between two position states. In the first position state, the four mechanical grippers 142 are respectively facing the first four workstations, and in the second position state, the four mechanical grippers 142 move a distance of spacing at the same time, so that the four grippers are respectively facing the last three workstations.

[0107] It should be noted that, in the above embodiments, the transport module of the cleaning device is pneumatically driven, but other actuators of the cleaning device may be driven in any manner, including but not limited to pneumatic drive and electric drive.

[0108] In some embodiments, Figure 9-12 As shown, the cleaning module 130 includes a cleaning chamber 132, which is a structure with an open top and a cleaning space formed therein. The cleaning chamber 132 is configured to store cleaning agents and clean the target object. The pneumatically driven execution unit also includes a first lifting assembly 131, which is configured to drive the target object to move in the up and down directions at the cleaning module. Specifically, after the first lifting assembly 131 receives the target object at the transport module 140, it drives the target object to move downward, so that the target object enters the cleaning chamber 132 and is in the cleaning agent in the cleaning chamber 132. After the cleaning is completed, the first lifting assembly 131 rises, driving the target object to leave the cleaning agent in the cleaning chamber 132. The first lifting assembly 131 can rise to a high position, receive the target object that is transported by the conveying module 140 above the corresponding workstation, and drive the target object down to the inside of the cleaning module 130, and clean the target object through the cleaning module 130. After the cleaning is completed, the first lifting assembly 131 drives the target object to rise to a high position, and the conveying module 140 continues to transport it to the next workstation.

[0109] like Figure 9-12 and Figure 14-15 As shown, the first lifting assembly 131 includes a second driving member 1311 and a first pallet assembly 1312, and the second driving member 1311 is configured to drive the first pallet assembly 1312 to move back and forth in the vertical direction. The first pallet assembly 1312 is used to carry the target object, and under the action of the second driving member 1311, drives the target object to rise or fall. Among them, the second driving member 1311 can be a three-position five-way solenoid valve and a cylinder connected to each other, the cylinder extends in the up and down directions, and the two ends of the cylinder are fixed to the cleaning module 130 through fixing members. The cylinder cooperates with the sensor through the three-position five-way solenoid valve, and the center sealing function of the solenoid valve can make the cylinder stay and lock at any position during the up and down travel, so that the first pallet assembly 1312 and the target object thereon can stay at any position. The first support plate assembly 1312 includes a bearing portion 13121 and a first connecting portion 13122. The bearing portion 13121 is used to directly bear the target object, and the first connecting portion 13122 is used to connect the receiving portion with the moving part of the cylinder. In order to make the up and down movement process more stable, the first lifting assembly 131 also includes a first guide rail 1313 extending in the vertical direction, and the first connecting portion 13122 is slidably matched with the first guide rail 1313. The bearing portion 13121 is preferably a frame structure with a hollow middle portion, so that the cleaning agent can pass through, improve the cleaning effect, and facilitate the discharge of the residual cleaning agent after the cleaning is completed.

[0110] like Fig.10 and 11 As shown, the cleaning chamber 132 of the cleaning module 130 includes a chamber door 134, and a gap is formed at the edge of the chamber door 134, and the width of the gap is usually 1-3mm. The chamber door 134 is mainly used to isolate the cleaning agent in the cleaning chamber 132, to reduce the volatilization of the cleaning agent, to increase the life of the cleaning agent, and to reduce safety risks. The cleaning agent will accumulate above the chamber door 134 through the side wall drainage of the chamber body 431 of the cleaning chamber 132, and most of the cleaning agent will flow back into the cleaning chamber 132 through the gap at the edge of the chamber door 134, and a small part of the cleaning agent will remain in the gap, which can prevent the internal cleaning agent from volatilizing.

[0111] Specifically, the chamber door 134 can be selected as an elastic door, which always has a tendency to close the cleaning chamber 132 under the action of its own elastic force. For example, after the first pallet assembly 1312 is lifted to the highest receiving position by the three-position five-way solenoid valve controlling the cylinder, the first pallet assembly 1312 receives the target object carried by the mechanical gripper 142, and then moves downward. The bottom of the first pallet assembly 1312 can overcome the elastic force to push open the elastic door of the cleaning chamber 132, and place the target object into the cleaning position inside the cleaning agent. The cleaning agent cleans the target object. After the cleaning is completed, the three-position five-way solenoid valve controls the cylinder to drive the first pallet assembly 1312 and the target object to rise to the middle drying position. After the first pallet assembly 1312 leaves the elastic door position, the elastic door is closed under the action of the elastic force, and the cleaning agent in the cleaning chamber 132 is isolated from the target object. Optionally, the chamber door 134 can also be selected as an electrically or pneumatically controlled revolving door or an electrically or pneumatically controlled moving door, which can increase the life of the corresponding mechanism. Preferably, as Figure 14-15 As shown, a roller 13123 is provided on the bearing portion 13121 of the first pallet assembly 1312, and the rotation axis of the roller 13123 is parallel to the rotation axis of the elastic door, and the roller 13123 protrudes from the bottom surface of the bearing portion 13121, so that in the process of the first pallet assembly 1312 moving downward, the roller 13123 contacts the elastic door and pushes the elastic door open. The roller 13123 can reduce the interference force between the first pallet assembly 1312 and the elastic door, making the working process smoother and avoiding structural damage.

[0112] Among them, Fig.10As shown, the pneumatically driven execution unit also includes a liquid disturbance device 136, which is arranged at the bottom of the cleaning chamber 132. The liquid disturbance device 136 is used to cause a disturbance effect on the cleaning liquid, and use the cleaning agent to achieve a physical flushing effect on the print to be cleaned, thereby improving the cleaning effect. The liquid disturbance device 136 includes but is not limited to a bubbling device, a vortex generating device, an oscillation device or a stirring device, that is, the disturbance mode of the liquid disturbance device 136 includes but is not limited to at least one of bubbling, vortex, oscillation and stirring. By using the cleaning agent in the present application to clean the resin on the target object, the liquid disturbance device 136 can be used to impact the target object to a certain extent, so that it is easier to separate the resin from the print to be cleaned, and it is also easier to take away the waste liquid after cleaning by the cleaning agent under the action of the impact force, which can significantly improve the cleaning effect and shorten the cleaning time. Further, an ultrasonic generator 135 is also provided at the bottom of the cleaning chamber, and the ultrasonic generator 135 is used to generate ultrasonic waves in the cleaning agent to improve the cleaning effect of the target in the cleaning chamber 132.

[0113] It should be noted that in the above embodiment, the first lifting assembly 131 and the liquid disturbance device 136 of the cleaning device are pneumatically driven, but other actuators of the cleaning device (such as the transport module 140) can be driven in any manner, including but not limited to pneumatic drive and electric drive.

[0114] In some embodiments, the rack 110 is the main bearing structure of the host unit 100. The multiple stations arranged on the rack 110 include at least one of a loading station 111, a plurality of cleaning stations 112, a UV light curing station, a drying station, a heat curing station and a material unloading station 113. Those skilled in the art can configure them according to the requirements of the technical solution. The loading and unloading modules 120 are arranged at the loading station 111 and the material unloading station 113; the cleaning module 130 is arranged at the cleaning station 112;

[0115] A second lifting assembly configured to drive the target object to move in the up and down directions is provided at the loading station 111 and the unloading station 113. Figure 5As shown, the loading station 111 and the unloading station 113 are both provided with a second lifting assembly 114, which is configured to drive the target object to move in the up and down directions to assist the loading and unloading module 120 in realizing the loading and unloading functions. Specifically, at the loading station 111, the second lifting assembly 114 is used to drive the target object on the loading and unloading module 120 to rise from a low position to a high position, and complete docking with the transport module 140, and the transport module 140 transports the target object to the cleaning module 130 for cleaning; at the unloading station 113, the second lifting assembly 114 is used to receive the cleaned target object transported by the transport module 140, and drive the target object to descend from a high position to the loading and unloading module 120 at a low position. Optionally, the second lifting assembly 114 includes a third driving member and a second pallet assembly, and the third driving member is configured to drive the second pallet assembly to reciprocate in the vertical direction. The specific setting form of the third driving member can refer to the second driving member 1311, and the specific setting form of the second pallet assembly can refer to the first pallet assembly 1312. The difference between the two is that the first lifting assembly 131 is arranged on the cleaning module 130, and the second lifting assembly 114 is arranged at the loading station 111 or the unloading station 113. Other specific setting methods can be referred to each other and will not be repeated here.

[0116] The cleaning chamber 132 of the cleaning module 130 can store various cleaning agents as needed. Since the shapes of 3D printed parts are generally very complex, the resin material is usually a mixed organic material with high viscosity, and the cleaning difficulty is relatively large. The existing cleaning scheme is mainly immersion cleaning. The cleaning agents in the cleaning chamber 132 are usually divided into organic cleaning agents (such as alcohol, IPA, ethyl acetate, etc.) and water-based cleaning agents (such as alkaline cleaning agents and emulsifiers, etc.). Among them, the cleaning efficiency of water-based cleaning agents is relatively low, and organic cleaning agents are usually used for cleaning in large-scale production. This requires a large amount of organic cleaning agents to be used in the cleaning process. Such cleaning agents are basically flammable and explosive items, with high cost, strong irritating odor, harmful to the human body, and the cleaning liquid is highly volatile, flammable and explosive. Large-scale use or storage is dangerous and has safety hazards. If you are not careful, it will cause major accidents. Therefore, it is necessary to develop safe cleaning equipment that reduces the use of organic cleaning agents. Based on this, in some embodiments of the present application, the cleaning station 112 includes at least three, and the cleaning module 130 includes a first cleaning module 1301, a second cleaning module 1302 and a third cleaning module 1303, wherein the cleaning chamber 132 of the first cleaning module 1301 is used to store water-based cleaning agents, the cleaning chamber 132 of the second cleaning module 1302 is used to store rough washing organic cleaning agents, and the cleaning chamber 132 of the third cleaning module 1303 is used to store fine washing organic cleaning agents.

[0117] During operation of the cleaning device in the above embodiment, the target object is loaded through the loading and unloading module 120 at the loading station 111, the transport module 140 first transports the target object in the loading module to the top of the first cleaning module 1301, and the first lifting component 131 of the first cleaning module 1301 transports the target object to the cleaning chamber 132 of the first cleaning module 1301, and pre-cleaning is performed with a water-based cleaning agent; then the transport module 140 transports the target object in the first cleaning module 1301 to the top of the second cleaning module 1302, and the first lifting component 131 of the second cleaning module 1302 transports the target object to the cleaning chamber 132 of the first cleaning module 1301, and pre-cleaning is performed with a water-based cleaning agent; then, the transport module 140 transports the target object in the first cleaning module 1301 to the top of the second cleaning module 1302, and the first lifting component 131 of the second cleaning module 1302 The lowering component 131 transports the target object to the cleaning chamber 132 of the second cleaning module 1302, and performs rough cleaning with a rough cleaning organic cleaning agent; then the transport module 140 transports the target object in the second cleaning module 1302 to directly above the third cleaning module 1303, and the first lifting component 131 of the third cleaning module 1303 transports the target object to the cleaning chamber 132 of the third cleaning module 1303, and performs fine cleaning with a fine cleaning organic cleaning agent; finally, the transport module 140 transports the target object in the third cleaning module 1303 to the unloading station 113, and the unloading is carried out by the loading and unloading module 120. The cleaning equipment is equipped with three cleaning modules 130, wherein the first cleaning module 1301 uses a water-based cleaning agent for cleaning. The water-based cleaning agent can use alkaline inorganic compounds as the main raw materials. The alkaline inorganic compounds and the esters in the 3D printing materials can undergo saponification reaction to generate alcohols and carboxylates soluble in water, thereby achieving the purpose of cleaning. The pre-cleaning of the water-based cleaning agent in the first cleaning module 1301 can reduce the subsequent use of organic cleaning agents, which is conducive to reducing costs, reducing the irritation of the cleaning agent, avoiding the use of flammable and explosive raw materials, and improving the safety of the cleaning process operation. Optionally, the mass ratio of each component in the water-based cleaning agent can be: water 80%-99.5%, alkaline inorganic compounds 0.5%-20%, surfactants 0-19.5%, emulsifiers 0-1% and defoamers 0-1%. While using alkaline inorganic compounds and esters to undergo saponification reaction, the surfactants and emulsifiers in the alkaline cleaning agent formula can also play a role in dissolving, emulsifying and dispersing, reducing surface tension, thereby removing most of the resin on the surface of the component to be cleaned, and improving the cleaning effect. In addition, while using alkaline inorganic compounds and esters to undergo saponification reactions, the surfactants and emulsifiers in the alkaline cleaning agent formula can also play a role in dissolving, emulsifying, and dispersing, reducing surface tension and thereby removing most of the resin on the surface of the printed part, thereby improving the cleaning effect.

[0118] The third cleaning module 1303 uses a newly purchased organic cleaning agent for fine cleaning, and the second cleaning module 1302 uses the organic cleaning agent in the third cleaning module 1303 for rough cleaning, so that the print to be cleaned is cleaned in batches. The cleaning effect of the print to be cleaned can be improved by two organic cleaning agent cleanings. Since the rough cleaning organic cleaning agent in the second cleaning module 1302 is recovered from the third cleaning module 1303, the total amount of organic cleaning agent consumed is only measured by the consumption of the third cleaning module 1303, which can reduce the consumption of organic cleaning agent, thereby reducing the capacity of organic cleaning agent that needs to be stored in the cleaning agent storage module, and reducing safety risks. Optionally, a valve can be set at the bottom of the cleaning module 130, which is connected to an external collection bin through a pipeline. When the cleaning agent in the cleaning bin 132 fails, the valve at the bottom of the cleaning module 130 is opened, and the failed cleaning agent is discharged to the external collection bin through the pipeline by the gravity pressure difference.

[0119] In order to verify the consumption of organic cleaning agent by the cleaning equipment in the above embodiment, Fig.13 The tooth model parts shown in the figure were subjected to cleaning tests, with 20 PCS cleaned in each batch, and the cleaning was continued until the surface was clean. The amount of organic cleaning agent consumed in the cleaning of each tooth model part was calculated, and the cleaning agent consumption of different schemes was compared. Among them, the single-compartment cleaning is to use only one cleaning module 130 equipped with an organic cleaning agent to clean the parts, and the three-compartment cleaning uses the first cleaning module 1301, the second cleaning module 1302 and the third cleaning module 1303 in the above embodiment for continuous cleaning. The organic cleaning agents used are all alcohol, and the water-based cleaning agents include water and alkaline inorganic compounds. Using alkaline inorganic compounds as the main raw materials of the cleaning agent, alkaline inorganic compounds and esters can undergo saponification reaction to generate alcohols and carboxylates that are soluble in water, thereby achieving the purpose of cleaning. The test results are shown in Table 1:

[0120] Table 1

[0121]

[0122] It can be seen from the above results that in the three-bin cleaning scheme of this embodiment, the remaining alcohol after cleaning by the third cleaning module 1303 can be used for rough cleaning of the second cleaning module 1302, so it is only necessary to calculate the consumption of the third cleaning module 1303. Therefore, the cleaning amount of the same volume of organic cleaning agent can reach 2.7 times that of single-bin cleaning, which can greatly reduce the consumption of organic cleaning agent.

[0123] In an optional embodiment, the alkaline inorganic compound used as a water-based cleaning agent includes but is not limited to at least one of soluble alkalis, soluble alkaline salts, etc. Among them, soluble alkalis include but are not limited to sodium hydroxide, potassium hydroxide, etc.; soluble alkaline salts include but are not limited to at least one of carbonates, bicarbonates, hydrogen phosphates, sulfites, acetates, sulfides, silicates, phosphates, metaaluminates and hypochlorites; specifically, soluble alkaline salts include but are not limited to sodium salts or potassium salts, for example, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium hydrogen phosphate, potassium hydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, sodium sulfite, potassium sulfite, sodium acetate, potassium acetate, sodium sulfide, potassium sulfide, sodium silicate, potassium silicate, sodium phosphate, potassium phosphate, sodium metaaluminate, potassium metaaluminate, sodium hypochlorite, potassium hypochlorite, etc. Organic cleaning agents include but are not limited to at least one of alcohol and isopropyl alcohol.

[0124] In some embodiments, the cleaning module 130 includes a cleaning chamber 132 and a third lifting assembly. The cleaning chamber 132 is a structure with an open top, and a cleaning space is formed therein. The cleaning chamber 132 is configured to store cleaning agents and clean the target object. The third lifting assembly is configured to drive the target object to move in the up and down directions at the cleaning module. After the third lifting assembly receives the target object from the transport module 140, it drives the target object to move downward, so that the target object enters the cleaning chamber 132 and is in the cleaning agent in the cleaning chamber 132. After the cleaning is completed, the third lifting assembly rises and drives the target object to leave the cleaning agent in the cleaning chamber 132. The third lifting assembly can rise to a high position, receive the target object that is transported by the transport module 140 directly above the corresponding station, and drive the target object to descend to the inside of the cleaning module 130, and clean the target object through the cleaning module 130. After the cleaning is completed, the third lifting assembly drives the target object to rise to a high position, and the transport module 140 continues to transport it to the next station.

[0125] The third lifting assembly specifically includes a fourth driving member and a third pallet assembly, and the fourth driving member is configured to drive the third pallet assembly to reciprocate in the vertical direction. The third pallet assembly is used to carry the target object, and under the action of the fourth driving member, drives the target object to rise or fall. The fourth driving member can be an intrinsically safe motor and a synchronous belt connected to each other, the intrinsically safe motor drives the synchronous belt to rotate, and drives the third pallet assembly to reciprocate in the up and down directions through the synchronous belt; the fourth driving member can also be an intrinsically safe motor and a screw assembly connected to each other, the rotational motion of the intrinsically safe motor is converted into the linear motion of the screw assembly, and the screw assembly drives the third pallet assembly to reciprocate in the up and down directions.

[0126] In some embodiments, the pneumatically driven execution unit further includes a blow-drying component 133, which is configured to disperse the cleaning agent on the target object through airflow. Figure 9-12As shown, the drying component 133 can be directly arranged in the cleaning chamber 132, and each cleaning module 130 is provided with a group of drying components 133. For example, in a cleaning device with three cleaning modules 130 that respectively complete pre-cleaning, rough and fine cleaning, the target object is pre-cleaned in the cleaning chamber 132 of the first cleaning module 1301, and the residual cleaning agent on the target object is blown dry by the drying component 133 on the first cleaning module 1301, and then enters the cleaning chamber 132 of the second cleaning module 1302 for rough cleaning, which can avoid contaminating the rough washing organic matter in the cleaning chamber 132 of the second module. Cleaning agent, after the target object has completed rough washing in the cleaning chamber 132 of the second cleaning module 1302, the cleaning agent remaining on the target object is blown dry by the blow-drying component 133 of the second cleaning module 1302, and then enters the cleaning chamber 132 of the third cleaning module 1303 for cleaning, which can avoid contaminating the fine washing organic cleaning agent in the cleaning chamber 132 of the third cleaning module 1303, that is, after completing one cleaning, it is blown dry before the next level of cleaning, which avoids the target object carrying the cleaning liquid of the previous level and contaminating the cleaning agent in the cleaning chamber 132 of the next level of the clear module, thereby reducing the consumption of cleaning agent. In addition, after the target object has completed fine washing in the cleaning chamber 132 of the third cleaning module 1303, the cleaning agent remaining on the target object is blown dry by the blow-drying component 133 of the third cleaning module 1303, and then unloading is carried out, which can avoid contamination of the loading and unloading modules or other structures.

[0127] The first lifting component 131 drives the target object to move in the up and down direction so that the target object enters or leaves the cleaning chamber 132. During the up and down movement of the target object, there is a cleaning position and a drying position, and the drying position is higher than the cleaning position; the drying component 133 is configured to disperse the cleaning agent on the target object at the drying position through airflow. The cleaning chamber 132 of the cleaning module 130 is a structure with an open top, and a cleaning space is formed inside. After the first lifting component 131 receives the target object, it drives the target object to move downward, so that the target object enters the cleaning position inside the cleaning chamber 132 and is in the cleaning agent in the cleaning chamber 132. After the cleaning is completed, the first lifting component 131 rises and drives the target object to leave the cleaning agent in the cleaning chamber 132. In addition, during the up and down movement of the target object driven by the first lifting component 131, the target object also has a receiving position, and the receiving position is higher than the drying position. Specifically, the first lifting component 131 can rise to a high receiving position to receive the target object directly above the cleaning bin 132, and drive the target object down to a low cleaning position. The cleaning position is located inside the cleaning bin 132, and the target object is cleaned by the cleaning agent in the cleaning bin 132. After the cleaning is completed, the first lifting component 131 drives the target object to rise to the middle drying position, and the drying component 133 blows the cleaning agent on the surface of the target object dry.

[0128] The cleaning module 130 in the embodiment of the present application integrates the cleaning chamber 132 and the drying component 133 together. The first lifting component 131 drives the target object to complete cleaning at the cleaning position, and then drives the target object to the drying position to be dried by the drying component 133, thereby realizing automatic execution. It can also realize multiple cleaning and drying without relying on manual execution, thereby reducing the harm of cleaning agents to the human body and facilitating safe production management.

[0129] The blow-drying assembly 133 includes a fifth driving member 1331 and a nozzle 1332, wherein the nozzle 1332 is located above the cleaning chamber 132, and the fifth driving member 1331 is configured to drive the nozzle 1332 to reciprocate in the horizontal direction, and the nozzle 1332 is configured to spray airflow to the target object. The fifth driving member 1331 is preferably a cylinder. During operation, the nozzle 1332 is driven by the fifth driving member 1331 to reciprocate above the target object, and the airflow is used to disperse the cleaning agent on the surface and inside of the target object through the nozzle 1332. The dispersed cleaning agent has two states, gas phase and liquid phase. The gas phase cleaning agent can be drawn to the outside through the exhaust system of the equipment, and the liquid phase cleaning agent can be returned to the inside of the cleaning chamber 132 through the drainage of the side wall of the chamber body 431 of the cleaning chamber 132. The airflow used to disperse the residual cleaning agent can be compressed air generated by an air compressor, or it can be an airflow generated by an ion fan or a safety fan, and the use of the ion fan and the safety fan can reduce the limitation of the equipment to the low field requirement.

[0130] Specifically, the blow-drying component 133 also includes a second connecting part 1333, the fifth driving member 1331 is fixed on the outer wall of the cleaning chamber 132, and the nozzle 1332 is connected to the movable part of the fifth driving member 1331 through the second connecting part 1333. In order to make the movement process more stable, the blow-drying component 133 also includes a second guide rail 1334 extending in the horizontal direction, and the second connecting part 1333 is slidably matched with the second guide rail 1334.

[0131] In the case where the cleaning chamber 132 of the cleaning module 130 includes a chamber door 134, the chamber door 134 can be used to isolate the cleaning agent in the cleaning chamber 132 from the blow-drying component 133, and is used to reduce the volatilization of the cleaning agent while reducing safety risks. The fifth driving member 1331 drives the nozzle 1332 to move back and forth above the target object, and uses airflow through the nozzle 1332 to disperse the cleaning agent on the surface and inside of the target object. The liquid phase of the dispersed cleaning agent is drained through the side wall of the chamber body 431 of the cleaning chamber 132 and accumulates above the chamber door 134. Most of the cleaning agent flows back into the cleaning chamber 132 through the gap at the edge of the chamber door 134, and a small part of the cleaning agent will remain in the gap, which can prevent the internal cleaning agent from volatilizing.

[0132] The technicians compare the cleaning equipment with the protection of the door 134 and the cleaning equipment without the protection of the door 134. Fig.13The cleaning effects of the tooth model prints shown are compared, and the specific test results are shown in Table 2 below.

[0133] Table 2

[0134]

[0135] From the results in Table 2, it can be seen that for the same volume of organic cleaning agent, the cleaning capacity can achieve a 3.5-fold benefit under the cleaning equipment of the embodiment of the present application, which means that the organic cleaning agent that the equipment needs to reserve daily is reduced by 2 / 3, greatly reducing the safety risk of organic cleaning agents.

[0136] It should be noted that in the above embodiment, the drying component 133 of the cleaning device is pneumatically driven, but other actuators of the cleaning device (such as the transport module 140, the first lifting component 131, and the liquid disturbance device 136) can be driven in any manner, including but not limited to pneumatic drive and electric drive.

[0137] In some embodiments, the host unit 100 further includes a cleaning agent replenishing device 170, which can be a gravity replenishing system, an intrinsically safe electric liquid filling pump, or a pneumatic liquid filling pump. The cleaning agent replenishing device 170 is used to replenish the cleaning agent in the cleaning agent storage unit 200 into the cleaning chamber 132 of the cleaning module 130.

[0138] Alternatively, if Figure 5 As shown, the cleaning agent replenishing device 170 is selected to be an intrinsically safe electric liquid-filling pump or a pneumatic liquid-filling pump. Through the driving force of the intrinsically safe electric liquid-filling pump or the pneumatic liquid-filling pump, the cleaning agent in the cleaning agent storage module is directly pumped into the cleaning chamber 132 through the pipeline.

[0139] Optionally, the cleaning agent replenishing device 170 is a gravity refilling system, which includes a transfer refilling tank, a vacuum generator and a liquid level switch, wherein: the transfer refilling tank is connected to the cleaning agent storage module through a pipeline, a check valve is provided at the entrance of the transfer refilling tank, and a switch valve is provided at the bottom of the transfer refilling tank; the vacuum generator is configured to reduce the vacuum degree in the transfer refilling tank; the liquid level switch is configured to detect whether the liquid level in the transfer refilling tank has reached an upper limit. The transfer liquid filling tank can be made of a customized closed container, which is connected to the external cleaning agent storage module through a pipeline. A one-way check valve is installed at the entrance of the transfer liquid filling tank, and a switch ball valve is installed at the bottom of the tank. The vacuum degree in the transfer liquid filling tank is reduced by a vacuum generator, and the cleaning agent in the cleaning agent storage module flows into the transfer liquid filling tank by using the atmospheric pressure difference. The liquid level switch detects the liquid level in the transfer heating liquid filling tank to detect whether it reaches the upper limit of replenishment. When the liquid level switch detects that the upper limit of the liquid level is reached, the vacuum generator is closed, and the switch valve at the bottom of the transfer liquid filling tank is opened. The cleaning agent in the transfer liquid filling tank is replenished into the cleaning tank 132 by using the gravity pressure difference. After the liquid level in the cleaning tank 132 reaches the standard, the switch valve can be closed, and the liquid replenishment is completed. The switch valve is preferably a ball valve.

[0140] In some embodiments, the pneumatically driven execution unit further includes an exhaust device, which is configured to exhaust the gas in the host unit 100, thereby reducing the organic solvent content in the working environment and improving safety. It should be noted that in this embodiment, the exhaust device of the cleaning device is pneumatically driven, but other actuators of the cleaning device (such as the transport module 140, the first lifting component 131, the drying component 133, and the liquid disturbance device 136) can be driven in any manner, including but not limited to pneumatic drive and electric drive.

[0141] In some embodiments, Fig.21 As shown, the cleaning device also includes an organic solvent monitoring unit 500, which is configured to detect the concentration of organic solvents in the environment, and to perform an emergency shutdown and / or cut off the main power supply when the organic solvent concentration exceeds a safety threshold. Specifically, the organic solvent monitoring unit 500 includes an independent power supply 510, an organic solvent sensor 520, a controller 530, and an actuator. The independent power supply 510 is used to independently power the organic solvent monitoring unit 500, so that the power supply of the organic solvent monitoring unit 500 is independent of the main power supply 321 of the cleaning device; the organic solvent sensor 520 is used to detect the concentration of organic solvents in the environment; the actuator is used to perform an emergency shutdown or cut off the main power supply 321 when the concentration of organic solvents exceeds a safety threshold. By setting up the organic solvent monitoring unit 500, it is possible to monitor whether the organic solvents in the working environment exceed the standard, and promptly deal with the dangerous situation of excessive organic solvents, perform an emergency shutdown or cut off the main power supply, and improve safety.

[0142] Optionally, the actuator includes an emergency stop module 540, which is usually arranged on the host unit 100 and can be triggered manually or automatically. After the emergency stop module 540 is triggered, the cleaning equipment stops urgently. The working units of the emergency stop include but are not limited to the loading and unloading module 120, the cleaning module 130, the transport module 140 and the cleaning agent recovery module 400. When the organic solvent sensor 520 detects that the organic solvent exceeds the safety threshold, the emergency stop module 540 can be directly triggered to operate, so that the cleaning equipment stops urgently. Preferably, the actuator can further include a contactor 550 for cutting off the main power supply 321. After the emergency stop module 540 is triggered, on the one hand, the emergency stop information signal can be fed back to the controller 530, and on the other hand, the contactor 550 can be directly triggered to operate through loop control, thereby cutting off the main power supply 321.

[0143] Optionally, the actuator includes a relay 560 for cutting off the main power supply 321 . When the organic solvent sensor 520 detects that the organic solvent exceeds a safety threshold, the controller 530 triggers the relay 560 to operate through signal control, thereby cutting off the main power supply 321 .

[0144] It should be noted that the organic solvent sensor 520 can be used to detect various organic solvents that need to be detected, including but not limited to alcohol and isopropyl alcohol; when there are multiple organic solvents that need to be detected, the organic solvent sensor 520 can select a sensor that can detect multiple organic solvents at the same time, or can select multiple sensors that detect different single organic solvents; the specific setting position and setting quantity of the organic solvent sensor 520 can also be specifically set according to needs. The setting position of the organic solvent sensor 520 is preferably a location where various organic solvents are easily generated or accumulated and an area with high explosion-proof requirements, including but not limited to above the cleaning bin of the cleaning module 130, around the ultrasonic generating device 135 of the cleaning module 130, around the driving mechanism of the first lifting assembly 131, the conveying module 140, the electrical box module 160, around the collection bin for collecting waste liquid, and on the cabinet 310 of the electrical processing unit 300 with a solvent recovery module 400 installed inside.

[0145] In some embodiments, the pneumatically driven execution unit further includes a pumping device, which is configured to pump the cleaning agent in the cleaning agent storage unit 200 to the cleaning module 130 and remove the cleaning waste liquid in the cleaning module 130. It should be noted that in this embodiment, the pumping device of the cleaning device is pneumatically driven, but other actuators of the cleaning device (such as the transport module 140, the first lifting component 131, the blow-drying component 133, the liquid disturbance device 136, and the exhaust device) can be driven in any manner, including but not limited to pneumatic drive and electric drive. In some embodiments, the cleaning device further includes an air source device, which is configured to supply air to the execution unit, and the air source device includes but is not limited to air compression equipment or air storage tanks. The air source device can be independently set, and an interface for connecting to the air source device is reserved on the cleaning device, and it can be connected through the interface when it is needed; the air source device can also be integrated with any one of the host unit 100, the cleaning agent storage unit 200 and the electrical processing unit 300.

[0146] In some embodiments, Figure 3-6 As shown, the main unit 100 includes a frame 110, a loading and unloading module 120, a cleaning module 130 and a transport module 140. The multiple workstations arranged on the frame 110 include a loading station 111, a plurality of cleaning stations 112 and an unloading station 113; at least one loading and unloading module 120 is provided, and each loading and unloading module 120 can be detachably arranged at any one of the loading station 111 and the unloading station 113; a plurality of cleaning modules 130 are provided, and each cleaning module 130 can be detachably arranged at any one of the cleaning stations 112; the transport module 140 is arranged on the frame 110, and the transport module 140 is configured to transport the target object to move above the workstation and can stop the target object above any workstation.

[0147] In some embodiments, the loading and unloading module 120 can be set as one. During the operation, the loading and unloading module 120 carrying the target object to be cleaned is first assembled with the loading station 111, and the transport module 140 transports the target object on the loading and unloading module 120 to the top of the cleaning station 112. At this time, the loading and unloading module 120 completes the loading work and is empty. Then the loading and unloading module 120 is transferred to the unloading station 113 and assembled with the unloading station 113. The transport module 140 transports the target object cleaned by the cleaning module 130 to the top of the unloading station 113, and the loading and unloading module 120 at the unloading station 113 takes over and completes the unloading. In some embodiments, multiple loading and unloading modules 120 can be provided. During operation, the loading and unloading module 120 carrying the target object to be cleaned is assembled with the loading station 111, and the unloaded loading and unloading module 120 is assembled with the unloading station 113. The transport module 140 transports the target object on the loading and unloading module 120 at the loading station 111 to above the cleaning station 112. After cleaning is completed, the transport module transports the target object cleaned by the cleaning module 130 to above the unloading station 113, and the loading and unloading module 120 at the unloading station 113 takes over and completes the unloading.

[0148] In the cleaning device provided in the above embodiment, any cleaning module 130 can be assembled with any cleaning station 112. Those skilled in the art can set the number of cleaning modules 130 and the assembly position of each cleaning module 130 as needed. Each cleaning module 130 has the same standard interface to adapt to each cleaning station 112. Take the cleaning device with three cleaning stations 112 as an example for explanation: In some usage scenarios, only two cleaning modules 130 are needed, and the two cleaning modules 130 can be installed on two cleaning stations 112 respectively; in some usage scenarios, such as Figure 3 As shown, three cleaning modules 130 are needed. In this case, the three cleaning modules 130 can be installed on three cleaning stations 112 respectively. In some usage scenarios, the cleaning modules 130 on different cleaning stations 112 can be interchanged as needed.

[0149] Specifically, the mechanical gripper 142 of the handling module 140 is arranged above the loading station 111, the cleaning station 112 and the unloading station 113, the first lifting assembly 131 is provided with a plurality of and is respectively arranged at the first cleaning module 1301, the second cleaning module 1302 and the third cleaning module 1303, the second lifting assembly 114 is respectively arranged at the loading station 111 and the unloading station 113, and the mechanical gripper 142 is used to realize the horizontal movement of the target object above the loading station 111, the cleaning station 112 and the unloading station 113. The first lifting assembly 131 is used to realize the lifting movement of the target object at the cleaning station 112, so that the target object descends from the top of the cleaning bin 132 to the inside of the cleaning bin 132, or rises from the inside of the cleaning bin 132 to the top of the cleaning bin 132; the second lifting assembly 114 is used to realize the lifting movement of the target object at the loading station 111 and the unloading station 113, so that the target object can be loaded from the loading module or unloaded from the unloading module. It should be noted that the transport module 140, the first lifting assembly 131 and the second lifting assembly 114 cooperate with each other. Specifically, after the target object in the loading module is lifted to a high position by the second lifting assembly 114, the target object is controlled by the mechanical clamp 142 of the transport module 140 above the loading station 111, and the mechanical clamp 142 transports the target object to the top of the first cleaning module 1301. At this time, the first lifting assembly 131 of the first cleaning module 1301 rises to a high position to receive the target object on the mechanical clamp 142, and then the first lifting assembly 131 of the first cleaning module 1301 drives the target object down to the water-based cleaning agent in the first cleaning module 1301 for cleaning. After the cleaning is completed, the first lifting assembly 131 of the first cleaning module 1301 drives the target object to rise to a high position, and the mechanical clamp 142 continues to drive the target object to the second cleaning module 1302, it is received by the first lifting component 131 of the second cleaning module 1302 and descends to the rough washing organic cleaning agent in the second cleaning module 1302 for rough washing. After cleaning is completed, the first lifting component 131 of the second cleaning module 1302 drives the target object to rise to a high position, and the mechanical clamp 142 continues to drive the target object to the top of the third cleaning module 1303, and it is received by the first lifting component 131 of the third cleaning module 1303 and descends to the fine washing organic cleaning agent in the third cleaning module 1303 for fine washing. After cleaning is completed, the first lifting component 131 of the third cleaning module 1303 drives the target object to rise to a high position, and the mechanical clamp 142 continues to drive the target object to the top of the unloading station 113. The second lifting component 114 at the unloading station 113 carries the target object and drives the target object to descend from a high position to the loading and unloading module 120 for unloading.

[0150] In the cleaning equipment provided in the embodiment of the present application, the loading and unloading module 120 and the cleaning module 130 are respectively made into standardized modules, and the combination installation method and the number of modules can be changed according to the needs of the cleaning process, which greatly improves the convenience of use and maintenance.

[0151] In an optional embodiment, the loading and unloading module 120 is as follows Figure 6 As shown, the movable material cart can stack and store a certain number of cleaning baskets 150, each cleaning basket 150 can hold a certain amount of printed parts to be cleaned, the movable material cart can be pushed into the loading station 111 along the guide of the frame 110, for the mechanical gripper 142 of the transport module 140 to grab the target object, and the movable material cart can be pushed into the unloading station 113 along the guide of the frame 110, for receiving the target object released by the mechanical gripper 142 of the transport module 140; optionally, in addition to using the movable material cart as the loading and unloading module 120 for loading and unloading, the loading and unloading module 120 can also adopt structures such as a continuous conveyor belt or a rotating feeding table.

[0152] It should be noted that if Figure 7 and 8 As shown, the target object in each embodiment of the present application can be the print to be cleaned itself, or can be the print to be cleaned and the container for loading the print to be cleaned, so as to prevent the transport module 140 and other mechanisms from directly acting on the print to be cleaned, causing damage to the print to be cleaned. The container is preferably as shown in FIG. Figure 8 The cleaning basket 150 shown can carry the printed part to be cleaned while allowing the cleaning liquid to pass through the container to clean the printed part to be cleaned. Optionally, the cleaning basket 150 is made of stainless steel hollow capillaries and small diameter wires wound and welded, which can greatly reduce the mass of the cleaning agent, increase the mesh spacing, and has the characteristics of easy handling, low cost, and high drying efficiency. In addition, the cleaning basket 150 is customized with auxiliary bracket extensions to limit the placement posture of complex applications and improve the efficiency and quality of cleaning and drying. Specifically, the cleaning basket 150 can be made of 4-8mm stainless steel hollow tubes and stainless steel wires below 1mm, which are bent and wound and welded. The grid spacing is made into a rectangle, and the narrow side spacing is not more than 10mm to ensure that small printed parts cannot fall out. The long side spacing can be made according to 30-60mm to ensure that the cleaning agent is blown dry without obstruction to the maximum extent. Compared with the cost mesh basket on the market, the production cost can be reduced by 30%, and the weight can be reduced by more than 50%, which is more convenient to use. In addition, by bending and welding a stainless steel hollow tube, an auxiliary bracket that can be inserted into the cleaning basket 150 can be made, which can facilitate the user to focus on cleaning and drying the surface toward the nozzle 1332 of the drying assembly 133 when stacking printouts, thereby improving cleaning efficiency and quality.

[0153] A large number of strong and weak electrical devices are needed in cleaning equipment. Traditional explosion-proof solutions such as intrinsically safe components cannot fully cover them, and the cost of covered components is extremely high. Even if all are replaced, the meaning of automation is lost from the perspective of cost-benefit. Based on this, in some implementations, such as Figure 1 and 2 As shown, the electrical processing unit 300 independently packages the high-voltage components with high risk of open flames, such as customized weldments and heating modules, into a high-voltage module 320, which is connected to the host unit 100 through pipelines. Only some low-voltage components such as sensors with low risk are retained in the host unit 100, which can greatly reduce safety risks. In some embodiments, such as Figure 3-5 As shown, the main unit 100 of the cleaning equipment also includes an electrical box module 160 and a positive pressure exhaust device, at least some of the weak current components are integrated in the electrical box module 160, and at least some of the weak current components are located in the positive pressure exhaust area formed by the positive pressure exhaust device. The cleaning module 130 usually mainly adopts an automated mechanism driven by compressed air. Some low-risk weak current components, such as solenoid valves, drivers, and position sensors, can be integrated into the customized electrical box module 160 according to the functional module partition, and connected to the corresponding actuator through quick-insert pipelines. For electrical components that cannot be encapsulated in the electrical box module 160, compressed air positive pressure can be used through the positive pressure exhaust device to ensure that the concentration of surrounding flammable and explosive gases cannot reach the combustion and explosion range, thereby further reducing safety risks. It should be noted that the isolation of weak-current components in the electrical box module 160 and the positive-pressure exhaust device is to ensure that the risk of open flame cannot come into contact with the explosive environment. It can be used for cleaning agents with a higher lower explosion limit. If the product requires the use of cleaning agents with a lower lower explosion limit, the corresponding weak-current components can be replaced with safety standard parts, which can be adapted to the explosion-proof certification rules of all regions.

[0154] In an optional embodiment, if Figure 9-11 As shown, the cleaning module 130 also includes an outer frame 138, which is sleeved on the outside of the cleaning chamber 132. On the one hand, the outer frame 138 can protect the cleaning chamber 132 and the structure between the outer frame 138 and the cleaning chamber 132 to a certain extent. On the other hand, the outer frame 138 is used to achieve structural coordination with the cleaning station 112. Each cleaning module 130 achieves standard docking with the cleaning station 112 through the outer frame 138, realizing modularization of the physical structure.

[0155] In an optional embodiment, a heat dissipation chamber 137 is further provided at the bottom of the cleaning chamber 132. During the operation of the cleaning module 130, the heat generated by the ultrasonic generator 135 and / or the liquid disturbance device will cause the temperature of the cleaning agent to rise, which will damage the printed part and also cause the risk of explosion. The purpose of the heat dissipation chamber 137 is to cool the cleaning agent and control the temperature of the cleaning agent to avoid safety risks. Specifically, the top of the heat dissipation bin 137 is open, and the bottom of the cleaning bin 132 extends into the heat dissipation bin 137. The heat dissipation bin 137 and the cleaning bin 132 are both fixed on the outer frame 138. A support plate is provided on the inner wall of the outer frame 138. The edge of the opening of the heat dissipation bin 137 is turned outward to form a flange and stacked with the support plate, so that the heat dissipation bin 137 is erected on the support plate. A liquid adding funnel is provided on the top of the heat dissipation bin 137, and the liquid adding funnel is used to add heat exchange medium into the heat dissipation bin 137. A drain valve is provided at the bottom of the heat dissipation bin 137, and the drain valve is used to discharge the heat exchange medium in the heat dissipation bin 137, so that the heat exchange medium can be replenished and released in the heat dissipation bin 137. When necessary, it can also be used to realize the sequence of the heat exchange medium in the heat dissipation bin 137 to improve the heat exchange efficiency.

[0156] In the related art, there are usually two ways to recycle water-based cleaning agents after 3D printing. One is to use reverse osmosis membrane filtration. This solution is costly, inefficient, and has a short filter life, and cannot meet the needs of automated production. The other is to use photocuring combined with filter filtration. The cleaning agent obtained by this solution still contains a certain amount of resin materials (about 1%), and the cleaning ability is poor. In addition, when the photosensitive resin in the waste liquid is lower than a certain concentration, it cannot be cured, and the waste liquid at this time cannot be recycled. Therefore, the related technology cannot complete the recycling of water-based cleaning agents with low concentrations of uncured photosensitive resin in the post-processing stage of 3D printing.

[0157] Based on this, the embodiment of the present application also provides a cleaning agent recovery method for recovering water-based cleaning agents after cleaning 3D printed components, and a cleaning agent recovery module 400 for implementing the cleaning agent recovery method is provided in the cleaning device. The cleaning agent recovery method specifically includes the following steps.

[0158] S1. Light curing treatment.

[0159] The cleaning agent containing resin impurities is subjected to a photocuring treatment. During the photocuring treatment, the local concentration of resin impurities in the cleaning agent is increased by using an adsorptive filter material, and the cleaning agent is initially filtered by the adsorptive filter material. The photocuring treatment is to emit light of a specific wavelength toward the cleaning agent mixed with uncured photosensitive resin material. Under the irradiation of the specific wavelength light, the photosensitive resin material in the cleaning agent will be cured and become a solid resin material that precipitates from the cleaning agent.

[0160] The cleaning agent for the cleaning agent recovery method proposed in the embodiment of the present invention is a water-based cleaning agent after cleaning the 3D printed part. The water-based cleaning agent can effectively remove the residual uncured photosensitive resin material attached to the photocured 3D printed part. The water-based cleaning liquid mainly uses the lipophilic group in the surfactant to separate the residual uncured resin attached to the surface of the printed part from the printed part, forming dispersed micelles in the water. The cleaning agent after this cleaning method contains a certain amount of uncured resin. When it is irradiated with ultraviolet light or visible light, the uncured resin undergoes photocuring and precipitates from the water-based cleaning agent.

[0161] Although there are technical solutions in the related art that use photocuring to cure the resin in the cleaning agent and then precipitate it, the uncured photosensitive resin in the waste liquid cannot be cured when it is lower than a certain concentration. For example, the concentration of the uncured resin in the cleaning agent itself is very low, and the cleaning agent at this time cannot be recycled and reused through photocuring treatment; for another example, although the concentration of the uncured resin in the cleaning agent is high, as the photocuring treatment progresses, the resin continues to cure and precipitate, and the concentration of the uncured resin in the cleaning agent gradually decreases, and finally a part of the resin will remain in the cleaning agent that cannot be precipitated through photocuring treatment.

[0162] Based on this, in the above embodiment, by setting an adsorptive filter material, the low concentration of uncured resin is agglomerated, so that the local concentration of the resin is increased, so that it is cured and precipitated by light with maximum efficiency. Specifically, the adsorptive filter material has developed pores so that it has a large specific surface area, and the surface area per gram of material is 500-0 square meters, so it has good adsorption characteristics. According to the different forces between the adsorptive filter material molecules and the resin molecules during the adsorption process, the adsorption process can be divided into physical adsorption and chemical adsorption. In the adsorption process, when the force between the adsorptive filter material and the resin molecules is van der Waals force (or electrostatic attraction), it is called physical adsorption; when the force between the adsorptive filter material and the resin molecules is a chemical bond, it is called chemical adsorption. The adsorption intensity of physical adsorption is mainly related to the physical properties of the adsorptive filter material, and has nothing to do with the chemical properties of the adsorptive filter material. Because the van der Waals force is weak, it has little effect on the structure of the resin molecules. This force is the same as the intermolecular cohesive force, so this type of physical adsorption phenomenon can be compared to the condensation phenomenon. The chemical properties of the resin remain unchanged during physical adsorption. In the process of the cleaning agent containing uncured resin flowing through the adsorptive filter material, a strong physical adsorption occurs between the uncured resin and the adsorptive filter material, causing its flow rate in the adsorptive filter material to decrease or stop flowing. There is no physical adsorption between the water-based cleaning agent and the adsorptive filter material or the physical adsorption between the two is very weak. The water-based cleaning agent flows faster in the adsorptive filter material. It is precisely because of this physical adsorption phenomenon of the adsorptive filter material that the concentration of the uncured resin in the cleaning agent therein increases, thereby effectively curing and precipitating this part of the enriched uncured resin during the photocuring process.

[0163] It can be seen that no matter the concentration of the uncured resin in the cleaning agent itself is very low, or the concentration of the uncured resin in the cleaning agent gradually decreases with the progress of the photocuring treatment, the adsorptive filter material in the above-mentioned embodiment can be used to enrich the uncured resin in the cleaning agent to increase the local resin concentration, thereby curing and precipitating it through photocuring treatment.

[0164] Among them, in addition to increasing the local concentration of resin impurities in the cleaning agent, the adsorptive filter material can also play a role in primary filtration of the cleaning agent, that is, filtering the cured resin precipitated after the photocuring treatment through the adsorptive filter material.

[0165] Through research, technicians have found that a large amount of solid impurities can be precipitated from the cleaning agent waste liquid after the photocuring treatment of the above embodiment. Specifically, when the resin impurity content in the initial cleaning agent is 5%, after the photocuring treatment without setting the adsorptive filter material, the uncured resin impurity content in the obtained cleaning agent is usually 3%. After the photocuring treatment with the adsorptive filter material set according to the above embodiment, the uncured resin impurity content in the obtained cleaning agent can usually be reduced to less than 1%, which can treat cleaning agents with low resin concentration. In addition, after sedimentation treatment, the resin series impurities in the obtained cleaning agent can usually be less than 0.1%, and the main components are only water and cleaning auxiliary additives. Conventional cleaning applications can be carried out, and the discharge treatment cost will also be greatly reduced. If the cleaning auxiliary additives used are non-toxic substances, the obtained cleaning agent can also be discharged as domestic wastewater.

[0166] In some embodiments, the adsorptive filter material includes, but is not limited to, at least one of activated carbon particles, medium- and high-density sponges, and activated carbon cotton.

[0167] Among them, the particle size range of activated carbon particles is preferably 0.5-5mm, mainly for highly absorbent materials. Activated carbon is a black solid substance with developed pores after gasification (carbonization, activation) and carbon as the skeleton structure. Its developed pores give it a large specific surface area. The surface area per gram of material is 500-0㎡, so it has good adsorption characteristics. The true specific gravity of activated carbon is 1.9-2.1. It should be noted that the adsorption capacity of activated carbon has a certain relationship with temperature and water quality. The higher the water temperature, the stronger the adsorption capacity of activated carbon. If the water temperature is higher than 30℃, the adsorption capacity reaches the limit and may gradually decrease; when the water quality is acidic, the adsorption capacity of activated carbon for anionic substances is relatively weakened, and when the water quality is alkaline, the adsorption capacity of activated carbon for cationic substances is weakened. Therefore, the temperature and pH value of the fluid are unstable, which will also affect the adsorption capacity of activated carbon. The temperature and pH value of the cleaning agent need to be controlled during use.

[0168] Among them, medium and high density sponges are mainly for materials with average water absorption. Medium and high density sponges have many and full pores and have excellent adsorption properties. It should be noted that the medium and high density sponges referred to in the embodiments of the present application are sponges with a density of more than 18 grams per cubic meter.

[0169] Among them, activated carbon cotton is mainly aimed at materials with low water absorption rate. Activated carbon cotton refers to a product that uses polymer adhesive materials to attach activated carbon to the substrate of non-glue cotton filter. Its main component is carbon element, containing a small amount of hydrogen, oxygen and nitrogen groups. The specific surface area can reach 1000-1600㎡ / g, and the micropore volume accounts for about 80% of the total pore volume.

[0170] In addition, the adsorptive filter material can be a combination of activated carbon particles, medium-high density sponges and activated carbon cotton. For example, a layer of activated carbon particles can be set in a medium-high density sponge, and medium-high density sponges and activated carbon cotton can be alternately stacked. The combination of multiple adsorptive filter materials can achieve complementary advantages through different materials and improve the adsorption effect.

[0171] In some embodiments, the cleaning agent is stirred during the photocuring process, and the stirring causes the cleaning agent liquid to be disturbed, so that the cleaning agent containing a small amount of residual resin can be separated to the maximum extent after passing through the intricate pores of the adsorptive filter material. S2, conventional filtration. It can be seen from step S1 that in addition to increasing the local concentration of resin impurities in the cleaning agent, the adsorptive filter material can also play a role in primary filtration of the cleaning agent, and at least a portion of the solidified resin precipitated during the photocuring process has been filtered out by the filter adsorbent material. The primary purpose of the filter adsorbent material is to increase the local concentration of unsolidified resin in the cleaning agent through its adsorption. Although it also has a filtering function, the filter pore size of the filter adsorbent material cannot be controlled to an extremely low level. Under normal circumstances, primary filtration can filter out 80%-90% of the solidified resin, but there is still a part of the solidified resin with a low particle size that cannot be filtered out. When it is necessary to filter out this part of the solidified resin with a low particle size, it is necessary to use the conventional filtration in this step for further filtration. It should be noted that this step S2 is a supplement to the primary filtration in step S1. If the filtration effect in step S1 is better or the requirements for the filtration index are not high, this step S2 may not be implemented. That is, step S2 is not a necessary step in the cleaning agent recovery method. Technicians in this field can choose whether to implement this step S2 as needed.

[0172] In an optional embodiment, conventional filtration includes performing secondary filtration on the cleaning agent after primary filtration, wherein the filtration accuracy of the secondary filtration is less than the filtration accuracy of the primary filtration. The filtration accuracy in the present application is the pore size of the filter element, which can be understood as the size of the maximum particles allowed to pass through the cleaning agent when passing through the filter material. Preferably, the cleaning agent after secondary filtration can also be subjected to tertiary filtration, and the filtration accuracy of the tertiary filtration is less than the filtration accuracy of the secondary filtration. Of course, if necessary, further filtration at a later level can be used as needed.

[0173] The specific filtering method of conventional filtration is not limited, and filtering can be performed by using a filter membrane or filter cotton to filter out macromolecular substances in the cleaning agent, filter out color powder and components with relatively large molecular weight in the cleaning agent, and especially filter out organic substances such as residual resin in the cleaning agent. Specifically, the material used for filtering is selected from at least one of super-permeable membrane, nano-permeable membrane, selective permeable membrane, polyester fiber filter cotton, synthetic fiber filter cotton, glass fiber filter cotton, activated carbon filter cotton, and sponge.

[0174] S3. Sedimentation treatment.

[0175] The cleaning agent is subjected to sedimentation treatment so that impurities with a greater specific gravity than the cleaning agent settle below the cleaning agent, and impurities with a smaller specific gravity than the cleaning agent float above the cleaning agent, and the cleaning agent in the middle layer is recovered.

[0176] Resin cleaning waste liquid usually contains some fillers, such as color paste, matte powder, gas silica and other additives. Such substances are usually inorganic particles with a diameter of 1-100nm or water-insoluble compounds. During the recycling process, they cannot be directly precipitated through photocuring treatment. In addition, physical filtration is costly, inefficient, and has a short filter element life. The accumulated content will affect the secondary cleaning effect of the cleaning agent. The sedimentation treatment in this step can largely solve the problems of cleaning waste liquid recovery efficiency and quality.

[0177] Specifically, the cleaning agent is introduced into the customized sedimentation tank 430, and physical stratification is achieved through the difference in specific gravity between impurities and the cleaning agent. Assuming that the specific gravity of the cleaning agent is 1, in the sedimentation tank 430, particles with a specific gravity greater than 1 will sink to the bottom, and lipid substances with a specific gravity less than 1 will float to the liquid surface, and the cleaning agent in the middle layer can be separated for recycling.

[0178] In some embodiments, the cleaning agent is heated during the sedimentation process. On the one hand, heating can accelerate the solvent stratification of the liquid in the sedimentation tank 430 and improve the recovery efficiency of the cleaning agent; on the other hand, the cleaning agent with increased temperature can increase the saponification and emulsification reaction rate, reduce surface tension, and increase the solubility of the resin in alkaline inorganic compounds, emulsifiers, etc., thereby increasing the concentration of alkaline inorganic compounds, emulsifiers, etc., and further increasing the saponification and emulsification reaction rate. High temperature can also reduce the viscosity of the resin, thereby making it easier for the resin to detach from the surface of the component to be cleaned, greatly reducing the difficulty of cleaning the resin.

[0179] S4, powerful filtration.

[0180] Usually, after the treatment in step S3, the recovered cleaning agent can be used again to clean the 3D printed components, which can achieve a good cleaning effect. After the cleaning is completed again, the cleaning agent can continue to be recycled through the aforementioned steps S1-S3, and the cycle is repeated. However, some difficult-to-remove impurities in the cleaning agent after long-term circulation will continue to be enriched. When there are higher requirements for the use scenario of the cleaning agent, the cleaning agent after post-treatment in steps S1-S3 is not competent, and it is necessary to use the strong filtration in step S4 for further treatment.

[0181] Specifically, after the step of sedimentation treatment of the cleaning agent, the recovered cleaning agent in the middle layer is passed into the bag filter 460 for strong filtration. The cleaning agent flows in from the top of the filter bag of the bag filter 460, flows from the inner surface of the filter bag to the outer surface, and the filtered particulate impurities are trapped in the filter bag. The filter bag preferably uses strong adsorption powders such as activated carbon or diatomaceous earth to cooperate with the static pressure generated by the height difference for microporous permeation filtration, which can remove most of the impurities insoluble in water, and the liquid level height can be appropriately increased to pull the high pressure difference to improve the filtration efficiency.

[0182] It should be noted that this step S4 is a supplement to the photocuring treatment and the sedimentation treatment. When the cleaning agent treated by steps S1-S3 meets the use conditions, this step S4 may not be implemented. That is, step S4 is not a necessary step in the cleaning agent recovery method. Technicians in this field can choose whether to implement this step S4 as needed.

[0183] The cleaning agent recovery module 400 in the cleaning device of the present embodiment of the present application is shown in the attached Figure 16-20 As shown, the cleaning agent recovery module 400 includes a solidification tank 410, a lighting module 420 and a sedimentation tank 430, wherein an adsorptive material 411 is arranged in the solidification tank 410, and the adsorptive filter material is configured to increase the local concentration of resin impurities in the cleaning agent and perform primary filtration on the cleaning agent; the lighting module 420 is configured to illuminate the cleaning agent in the solidification tank 410 so that the photosensitive resin in the cleaning agent in the solidification tank 410 is solidified and precipitated; the sedimentation tank 430 is configured to perform sedimentation treatment on the filtered cleaning agent.

[0184] The illumination module 420, the solidification tank 410 and the sedimentation tank 430 are arranged in sequence from top to bottom, so that the cleaning agent flowing out of the solidification tank 410 can flow into the sedimentation tank 430 by gravity, saving power. The illumination module 420 is used to emit ultraviolet light or visible light, and the specific type of light and its wavelength range are specifically determined according to the specific object to be cleaned.

[0185] As an optional implementation, Figure 17-18 As shown, the illumination module 420 includes an air duct box 421 for forming an air duct, a radiator 422 and a light source 423 disposed in the air duct box 421, and the light source 423 is used to emit ultraviolet light or visible light, and the light emission direction is toward the curing pool 410 below. The air duct box 421 is provided with an air inlet 424 and an air outlet 425. The air flow can enter the air duct box 421 through the air inlet 424 through fan drive, and then be discharged from the air outlet 425 after passing through the radiator 422. The radiator 422 and the air duct are used to achieve heat dissipation of the light source 423. The top of the curing pool 410 is open so that the light emitted by the light source 423 of the illumination module 420 can irradiate the curing pool 410.

[0186] As an optional implementation, Figure 18-20 As shown, the sedimentation tank 430 includes a silo 431, in which an oil baffle plate 432 and a flow baffle plate 433 are arranged. The oil baffle plate 432 divides the internal space of the sedimentation tank 430 into a plurality of sedimentation silos. A flow passage 434 is arranged at the lower end of the oil baffle plate 432, and an overflow passage 435 is arranged above the flow baffle plate 433. The overflow passage 435 is higher than the flow passage 434. The oil baffle plate 432 and the flow baffle plate 433 are arranged one by one. The oil baffle plate 432 and the flow baffle plate 433 can be arranged as one group or as multiple groups, for example Fig.19 As shown, a group of oil baffles 432 and flow baffles 433 are provided, and the oil baffles 432 divide the internal space of the sedimentation tank 430 into a first sedimentation bin 4361 and a second sedimentation bin 4362. Fig. 20 As shown, two groups of oil baffles 432 and flow baffles 433 are provided, and the two oil baffles 432 divide the internal space of the sedimentation tank 430 into a first sedimentation bin 4361, a second sedimentation bin 4362, and a third sedimentation bin 4363 which are arranged in sequence. It should be noted that the flow passage 434 can be a hollow structure arranged on the oil baffle 432, or a channel formed between the lower end of the oil baffle 432 and the bottom surface of the bin body 431, and the overflow passage 435 can be a hollow structure arranged on the flow baffle 433, or a channel between the flow baffle 433 and the top surface of the bin body 431.

[0187] The working process and principle of the sedimentation tank 430 are as follows: Fig. 20Taking the example of the above, the cleaning agent first enters the first sedimentation bin 4361. In the first sedimentation bin 4361, the particles with a specific gravity greater than the cleaning agent sink to the bottom, and the lipid substances with a specific gravity less than the cleaning agent float to the liquid surface. The oil baffle 432 between the first sedimentation bin 4361 and the second sedimentation bin 4362 is higher than the liquid surface, so that the lipid substances in the upper layer of the first sedimentation bin 4361 cannot enter the second sedimentation bin 4362, while the cleaning agent in the middle layer can pass through the oil baffle 432 below. The flow passage 434 enters the second sedimentation bin 4362. The portion of the baffle plate 433 facing the flow passage 434 is a solid structure. The cleaning agent entering the second sedimentation bin 4362 will carry with it a portion of the particles with a large specific gravity in the lower layer. Due to their own large specific gravity, they will be blocked by the baffle plate 433 and will settle in front of the baffle plate 433. The cleaning agent will slowly climb along with the baffle plate 433 and eventually overflow the baffle plate 433 from the overflow passage 435. Similarly, in the second sedimentation bin 4362, the particles with a large specific gravity will be entrained. In the second sedimentation bin 4362, the particles with a specific gravity greater than that of the cleaning agent sink to the bottom, and the lipid substances with a specific gravity less than that of the cleaning agent float to the surface of the liquid level. The oil baffle plate 432 between the second sedimentation bin 4362 and the third sedimentation bin 4363 is higher than the liquid surface, so that the lipid substances in the upper layer of the second sedimentation bin 4362 cannot enter the third sedimentation bin 4363, and the cleaning agent in the middle layer can enter the third sedimentation bin 4363 through the flow channel 434 below the oil baffle plate 432, and enter the second sedimentation bin 4362. After a part of the particles entrained in the cleaning agent are blocked by the baffle 433, they settle in front of the baffle 433, and the cleaning agent slowly climbs up along with the baffle 433, and finally overflows the baffle 433 from the overflow channel 435; in the first sedimentation bin 4361, most of the large specific gravity particles and small specific gravity lipid substances can be separated, and the particles and lipid substances separated in the second sedimentation bin 4362 and the third sedimentation bin 4363 are getting less and less, so the cleaning agent in the middle layer of the third sedimentation bin 4363 can be recovered. It should be noted that if the lipid substances can hardly be separated in the last-stage sedimentation bin, it is possible to consider opening an overflow port or an overflow weir at the liquid surface to directly recover the cleaning agent by overflow, or to set a water outlet baffle 438 similar to the oil baffle 432 to further block the lipid substances in the third sedimentation bin 4363, and then set an overflow port and an overflow weir to recover the cleaning agent; if a certain amount of lipid substances can still be separated in the last-stage sedimentation bin, it is possible to consider directly inserting the pipeline into the cleaning agent in the middle layer and recovering the cleaning agent by suction pump.

[0188] In an optional embodiment, if Fig.19 and 20As shown, a heating module 437 is also provided in the sedimentation tank 430. The heating module 437 is preferably provided in the sedimentation bin of the last stage to heat the cleaning agent. By heating, the liquid in the sedimentation tank 430 can be accelerated to stratify, and the recovery efficiency of the cleaning agent can be improved. At the same time, the cleaning agent with increased temperature can increase the saponification and emulsification reaction rate, reduce the surface tension, and reduce the viscosity of the resin, so that the resin is more easily separated from the surface of the component to be cleaned, greatly reducing the difficulty of cleaning the resin.

[0189] In an optional embodiment, the cleaning agent recovery module 400 also includes a secondary filtration module 440, which is configured to perform secondary filtration on the cleaning agent after primary filtration. The filtration accuracy of the secondary filtration is less than the filtration accuracy of the primary filtration. The secondary filtration module 440 is preferably arranged between the solidification tank 410 and the sedimentation tank 430, so that the cleaning agent flowing out of the solidification tank 410 can flow into the secondary filtration module 440 by gravity. Preferably, the cleaning agent recovery module 400 also includes a three-stage filter module 450, which is configured to perform three-stage filtration on the cleaning agent after the two-stage filtration. The filtration accuracy of the three-stage filtration is less than the filtration accuracy of the two-stage filtration. The three-stage filtration module 450 is preferably arranged in the sedimentation tank 430, and can be specifically arranged at the upper part of the first sedimentation bin 4361, so that the cleaning agent flowing out of the two-stage filtration module 440 can flow by gravity into the three-stage filtration module 450, and the cleaning agent in the three-stage filtration module 450 can flow by gravity into the first sedimentation bin 4361.

[0190] In an optional embodiment, if Fig.16 and 20 As shown, the cleaning agent recovery module 400 also includes a bag filter 460, which is configured to perform strong filtration on the cleaning agent after sedimentation treatment. The inlet of the bag filter 460 is connected to the outlet of the sedimentation tank 430, and the cleaning agent flowing out of the outlet of the bag filter 460 can be pumped into the sedimentation tank 430 by the diaphragm pump 470 for standby use, or can be pumped into the cleaning tank 132 by the diaphragm pump 470 for direct use.

[0191] It should be noted that the cleaning agent recovery method implemented by the cleaning agent recovery module is the method involved in the aforementioned cleaning agent recovery method embodiment. For relevant details, please refer to the above embodiments and will not be repeated here.

[0192] The technical effects of the cleaning agent recovery method and the cleaning agent recovery module 400 of the present application are further described in detail below in conjunction with experimental examples.

[0193] Experimental Example 1 (Test of cleaning ability of cleaning agent after recovery)

[0194] The cleaning object is the structure obtained by using Heige Technology's Model HP 2.0Gray photosensitive resin (mainly acrylic resin) and photocuring 3D printing with Heige Technology's UltraCraft A2D equipment. Different cleaning levels are formulated according to the final cleaning effect:

[0195] Cleaning level 4 means that the cleaning is very clean, there is no reflection on the surface, the sample is not sticky, and there is no resin residue in the details, pits, and pipes;

[0196] Cleaning level 3 means that there is no resin residue on the outer surface, only slight reflection, the surface is slightly sticky, and there is a trace amount of resin in the details, which can meet the application requirements;

[0197] Cleaning level 2 means that most of the resin on the outer surface has been removed, the surface is sticky, and there is more resin residue in the details;

[0198] Cleaning level 1 means that the thicker resin accumulated on the foot surface can be removed, leaving a thinner layer of resin on the surface, and a large amount of resin remains in the details;

[0199] Cleaning level 0 means no significant cleaning effect and the resin cannot be effectively removed.

[0200] In this embodiment, water-based cleaning agent A is selected to clean several printed parts. The resin content in the cleaning agent after cleaning is about 3%. The cleaning agent after cleaning is processed as follows:

[0201] (1) sequentially adopting the photocuring treatment and sedimentation treatment in the embodiment of the present application to recover the cleaning agent B;

[0202] (2) sequentially adopting the light curing treatment and the strong filtration of the bag filter 460 in the embodiment of the present application to recover the cleaning agent C;

[0203] (3) Directly adopt light curing treatment without using adsorbable filter materials, and recover the cleaning agent D.

[0204] The printer components were ultrasonically cleaned for 3 minutes using cleaning agents A, B, C and D, respectively. After being taken out, they were cleaned with alcohol for 2 minutes, dried with an air gun and cured. The cleaning levels obtained were 4, 3, 4 and 2, respectively.

[0205] It can be seen that the cleaning agent recovered by direct photocuring treatment without using adsorbable filter materials cannot meet the application cleaning requirements, while the cleaning agent recovered by the method of the embodiment of the present application can meet the application cleaning requirements and even nearly 100% restore the cleaning ability of the cleaning agent.

[0206] Experimental Example 1 (Cleaning agent recovery rate and precipitate verification)

[0207] A water-based cleaning agent A was selected to clean several printed parts. The resin content in the cleaning agent after cleaning was about 1%. The cleaning agent after cleaning was treated as follows: the photocuring treatment and sedimentation treatment in the embodiment of the present application were used in sequence to recover the cleaning agent B, and the recovered weight was recorded; the cleaning agent B was effectively filtered using a bag filter 460, and the cleaning agent C was recovered and the weight was recorded; the cleaning agents B and C were simultaneously taken for sewage rating, and the results are shown in Table 3 below.

[0208] Table 3

[0209]

[0210] It can be seen from Table 3 that the cleaning agent recovered by the method of the embodiment of the present application has a stable recovery efficiency and less loss.

[0211] In an optional embodiment, if Figure 2 and Fig.16 As shown, the cleaning agent recovery module 400 can be arranged in the cabinet 310 of the electrical processing unit 300, that is, the high-voltage module 320 and the cleaning agent recovery module 400 are both arranged in the cabinet 310, thereby simplifying the structural unit of the system. In order to achieve water-electricity separation, the high-voltage module 320 and the cleaning agent recovery module 400 are isolated by a partition 330.

[0212] The embodiment of the present application also correspondingly protects a cleaning method, which is implemented by the cleaning equipment provided by the embodiment of the present application. The cleaning equipment is provided with multiple cleaning modules. The cleaning method includes: after a cleaning module has finished cleaning the target object, the cleaning agent carried by the target object is blown dry, and then the target object is transported to the next cleaning module for cleaning and drying, until all cleaning modules have finished cleaning and drying the target object. When cleaning at multiple levels, after the cleaning at the previous level is completed, the cleaning agent carried by the target object can be blown dry first, and then the cleaning station at the next level can be entered. In this way, multiple cleaning and drying can be achieved, avoiding the previous cleaning agent from contaminating the next cleaning agent, reducing the use of cleaning agents, and facilitating safe production management. In the case where the cleaning equipment includes a solvent recovery module, the cleaning method also correspondingly includes the cleaning agent recovery method in the aforementioned embodiment of the present application. For example, the cleaning method may include: photocuring the cleaning agent containing resin impurities, using adsorptive filter materials to increase the local concentration of resin impurities in the cleaning agent during the photocuring process, and performing primary filtration on the cleaning agent through the adsorptive filter materials; performing sedimentation treatment on the cleaning agent so that impurities with a specific gravity greater than the cleaning agent settle below the cleaning agent, and impurities with a specific gravity less than the cleaning agent float above the cleaning agent, and the cleaning agent in the middle layer is recovered. For another example, the cleaning method may also include: after the step of sedimentation treatment of the cleaning agent, the recovered cleaning agent in the middle layer is passed into a bag filter for strong filtration. Since the present cleaning method is implemented based on the cleaning equipment in the embodiment of the present application, the specific implementation of the cleaning method includes the specific content in the embodiment of the cleaning equipment of the present application, which will not be repeated here.

[0213] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are 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 on the present application. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0214] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0215] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A cleaning device, characterized in that: include: The host unit comprises a frame, a loading and unloading module, a cleaning module and a pneumatically driven execution unit, wherein the frame is provided with a plurality of workstations; the loading and unloading module is provided with at least one and is configured to load or unload a target object; the cleaning module is provided with a plurality of and is configured to clean the target object; the pneumatically driven execution unit is configured to perform a preset action on the target object; a cleaning agent storage unit, configured to store cleaning agents and to provide the cleaning agents to the cleaning modules; as well as an electrical processing unit configured to control the pneumatically driven actuator, Wherein, the target object is a printed piece to be cleaned, Alternatively, the target object is a printed piece to be cleaned and a container for loading the printed piece to be cleaned; The cleaning module comprises a cleaning chamber, the cleaning chamber is configured to store cleaning agent and clean the target object, the cleaning chamber comprises a chamber door, and a gap is formed at the edge of the chamber door; The pneumatically driven execution unit further includes a first lifting assembly, which is configured to drive the target object to move in an up-and-down direction at the cleaning module; The pneumatically driven execution unit also includes a blow-drying component, which is configured to disperse the cleaning agent on the target object through airflow, and the dispersed cleaning agent includes a gas-phase cleaning agent and a liquid-phase cleaning agent. The gas-phase cleaning agent is drawn to the outside through the exhaust system of the equipment, and the liquid-phase cleaning agent flows back into the cleaning bin through the side wall of the bin body of the cleaning bin.

2. The cleaning device according to claim 1, characterized in that: The pneumatically driven execution unit includes a transport module, and the transport module is configured to transport the target object so that the target object moves or stays above each of the workstations.

3. The cleaning device according to claim 2, characterized in that: The transport module includes a first driving member and a mechanical gripper, wherein the first driving member is configured to drive the mechanical gripper to reciprocate in a horizontal direction, and the mechanical gripper is configured to grasp or release the target object.

4. The cleaning device according to claim 3, characterized in that: The workstations are arranged at equal intervals, a plurality of mechanical grippers are arranged at equal intervals, the first driving member drives the plurality of mechanical grippers to move simultaneously, and the interval between the workstations is equal to the interval between the mechanical grippers.

5. The cleaning device according to claim 1, characterized in that: The first lifting assembly includes a second driving member and a first pallet assembly, and the second driving member is configured to drive the first pallet assembly to reciprocate in a vertical direction.

6. The cleaning device according to claim 1, characterized in that: The pneumatically driven execution unit further comprises a liquid disturbance device, and the liquid disturbance device is arranged at the bottom of the cleaning chamber.

7. The cleaning device according to claim 6, characterized in that: The liquid disturbance device is a bubbling device, a vortex generating device, an oscillating device or a stirring device.

8. The cleaning device according to claim 1 or 6, characterized in that: An ultrasonic generating device is also provided at the bottom of the cleaning chamber.

9. The cleaning device according to claim 1, characterized in that: The workstations include at least one of a loading station, a plurality of cleaning stations, a UV light curing station, a drying station, a heat curing station and a unloading station.

10. The cleaning device according to claim 9, characterized in that: The loading station and the unloading station are provided with a second lifting assembly configured to drive the target object to move in the up and down directions.

11. The cleaning device according to claim 10, characterized in that: The second lifting assembly includes a third driving member and a second pallet assembly, and the third driving member is configured to drive the second pallet assembly to reciprocate in a vertical direction.

12. The cleaning device according to claim 9, characterized in that: The cleaning stations include at least three, and the cleaning module includes: A first cleaning module, wherein the cleaning chamber is used to store water-based cleaning agents; A second cleaning module, wherein the cleaning chamber is used to store a rough cleaning organic cleaning agent; The third cleaning module has a cleaning chamber for storing fine cleaning organic cleaning agents.

13. The cleaning device according to claim 1, characterized in that: The cleaning module includes a cleaning chamber and a third lifting assembly, wherein the cleaning chamber is configured to store cleaning agents and clean the target object; The third lifting assembly is configured to drive the target object to move in an up-down direction; Wherein, the third lifting assembly includes a fourth driving member and a third pallet assembly, and the fourth driving member is configured to drive the third pallet assembly to reciprocate in a vertical direction.

14. The cleaning device according to claim 13, characterized in that: The fourth driving member comprises an intrinsically safe motor and a synchronous belt connected to each other; or The fourth driving member includes an intrinsically safe motor and a lead screw assembly connected to each other.

15. The cleaning device according to claim 1, characterized in that: The drying assembly includes a fifth driving member and a nozzle. The fifth driving member is configured to drive the nozzle to reciprocate in a horizontal direction. The nozzle is configured to spray airflow toward the target object.

16. The cleaning device according to claim 1, characterized in that: The host unit also includes a cleaning agent replenishing device, which is a gravity liquid replenishing system, an intrinsically safe electric liquid filling pump or a pneumatic liquid filling pump.

17. The cleaning device according to claim 16, characterized in that: The gravity fluid replenishment system comprises: A transfer liquid-adding tank is connected to the cleaning agent storage unit through a pipeline, a check valve is provided at the inlet of the transfer liquid-adding tank, and a switch valve is provided at the bottom of the transfer liquid-adding tank; a vacuum generator configured to reduce the vacuum degree in the transfer liquid filling tank; The liquid level switch is configured to detect whether the liquid level in the transfer liquid filling tank has reached an upper limit.

18. The cleaning device according to claim 1, characterized in that: The pneumatically driven execution unit further comprises an exhaust device configured to exhaust gas from the host unit.

19. The cleaning device according to claim 1, characterized in that: The pneumatically driven execution unit further comprises a pumping device configured to pump the cleaning agent in the cleaning agent storage unit to the cleaning module and discharge the cleaning waste liquid in the cleaning module.

20. The cleaning device according to claim 1, characterized in that: The cleaning device further comprises an air source device, wherein the air source device is configured to supply air to the execution unit, and the air source device comprises an air compression device or an air storage tank.

21. The cleaning device according to claim 1, characterized in that: The workstations include a loading station, an unloading station and a cleaning station; The loading and unloading modules are detachably arranged at the loading station and the unloading station, and / or The cleaning module is detachably arranged in the cleaning station.

22. The cleaning device according to claim 1, characterized in that: The loading and unloading modules are movable feed carts, continuous conveyor belts or rotating feed tables.

23. The cleaning device according to claim 1, characterized in that The host unit also includes an electrical box module and a positive pressure exhaust device, at least part of the weak current components are integrated into the electrical box module, and at least part of the weak current components are located in the positive pressure exhaust area formed by the positive pressure exhaust device.

24. The cleaning device according to claim 1, characterized in that The cleaning agent storage unit is provided with a communicating vessel type liquid level gauge.

25. The cleaning device according to claim 1, characterized in that Also includes: The organic solvent monitoring unit is configured to detect the organic solvent concentration in the environment and perform emergency shutdown and / or cut off the main power supply when the organic solvent concentration exceeds a safety threshold.

26. The cleaning device according to claim 1, characterized in that The cleaning device also includes a cleaning agent recovery module, and the cleaning agent recovery module includes: a solidification tank having an adsorptive filter material disposed therein, the adsorptive filter material being configured to increase the local concentration of resin impurities in the cleaning agent and to perform primary filtration of the cleaning agent; A lighting module is configured to illuminate the cleaning agent in the curing tank; The sedimentation tank is configured to carry out sedimentation treatment on the filtered cleaning agent.

27. The cleaning device according to claim 26, characterized in that The sedimentation tank includes a bin body, in which an oil baffle plate and a flow baffle are arranged. The oil baffle plate divides the internal space of the sedimentation tank into a plurality of sedimentation bins. A flow channel is arranged at the lower end of the oil baffle plate, and an overflow channel is arranged above the flow baffle plate. The overflow channel is higher than the flow channel.

28. The cleaning device according to claim 27, characterized in that The cleaning agent recovery module also includes: The bag filter is configured to effectively filter the cleaning agent after sedimentation treatment.

29. The cleaning device according to claim 26, characterized in that The cleaning agent recovery module is arranged in the cabinet of the electrical processing unit, and the strong current module in the electrical processing unit is isolated from the cleaning agent recovery module by a partition.

30. A cleaning method, implemented by the cleaning device according to any one of claims 1 to 29, characterized in that: The cleaning method includes: after a cleaning module completes cleaning of the target object, drying the cleaning agent carried by the target object, and then transporting the target object to the next level of the cleaning module for cleaning and drying, until all cleaning modules have completed cleaning and drying of the target object.

31. The cleaning method according to claim 30, characterized in that: Also includes: Performing a light-curing treatment on the cleaning agent containing resin impurities, using an adsorptive filter material to increase the local concentration of the resin impurities in the cleaning agent during the light-curing treatment, and performing primary filtration on the cleaning agent through the adsorptive filter material; The cleaning agent is subjected to sedimentation treatment so that impurities with a greater specific gravity than the cleaning agent settle below the cleaning agent, and impurities with a smaller specific gravity than the cleaning agent float above the cleaning agent, and the cleaning agent in the middle layer is recovered.

32. The cleaning method according to claim 31, characterized in that After the step of sedimentation treatment of the cleaning agent, the recovered cleaning agent in the middle layer is passed into a bag filter for strong filtration.

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