Cleaning module, cleaning apparatus and cleaning method

Abstract

The application relates to the technical field of printing piece cleaning, in particular to a cleaning module, a cleaning device and a cleaning method. The cleaning module comprises a cleaning bin, a first lifting assembly and a blow-drying assembly. The cleaning bin is configured to store a cleaning agent and clean a target object. The first lifting assembly is used to make the target object enter or leave the cleaning bin, and has a cleaning position and a blow-drying position during the up-down movement of the target object. The blow-drying assembly is configured to drive the cleaning agent on the target object at the blow-drying position to disperse through airflow. The cleaning bin and the blow-drying assembly are integrated together. After the first lifting assembly drives the target object to complete cleaning at the cleaning position, the first lifting assembly drives the target object to the blow-drying position to be blown dry by the blow-drying assembly, so that the cleaning is automatically executed without relying on manual execution, and the harm of the cleaning agent to the human body is reduced. When multiple-stage cleaning is performed, the cleaning agent of the upper stage is prevented from polluting the cleaning agent of the lower stage, the use of the cleaning agent is reduced, and safe production management is facilitated.

Description

Technical Field

[0001] This application relates to the field of print cleaning technology, and in particular to a cleaning module, cleaning equipment and cleaning method. Background Technology

[0002] Currently, photopolymer 3D printing technology is being applied in an increasingly wide range of fields, especially due to its high forming precision, which has broad applications in mold making, customized products, medical devices, dentistry, figurines, and prostheses. Photopolymer 3D printing typically involves layer-by-layer printing using a slicing process. The photopolymer material between the printing reference surface and the model is cured to form a patterned cured layer. This process is repeated to create a printed structure on the component platform, built up from the accumulated patterned cured layers. It utilizes the principle that photosensitive resin cures when exposed to ultraviolet light, allowing for material accumulation and forming.

[0003] After 3D printing, the surface of the part is covered with a lot of liquid resin, which needs to be cleaned by a cleaning system. The removal process mainly consists of two steps: cleaning and drying. The shapes of printed parts are generally very complex, making cleaning difficult. There are time limits on the contact time between the resin and the cleaning agent, which means that current processes usually rely on manual operation, requiring multiple cleaning and drying cycles, and in some applications, even point-to-point manual drying. Physical friction is used to remove all residual resin, which is inefficient and requires a high level of operator skill and responsibility. The cleaning agents used also pose certain health risks and are detrimental to production management. Existing cleaning solutions mainly include immersion cleaning and spray cleaning. Spray cleaning is more dependent on manual labor and has lower cleaning efficiency, so immersion cleaning is still the main method used in large-scale production enterprises. Immersion cleaning consumes a large amount of cleaning agent, which is mainly organic. These cleaning agents are mostly flammable and explosive, costly, have a strong pungent odor, are harmful to human health, and are highly volatile, flammable, and explosive. Large-scale use or storage poses a danger and safety hazard.

[0004] Therefore, developing cleaning modules that integrate cleaning and drying functions, as well as cleaning methods that reduce the amount of cleaning agents used, is of great significance for safe cleaning. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a cleaning module, cleaning equipment, and cleaning method to overcome the technical problems of low cleaning and drying efficiency, high cleaning agent consumption, and adverse effects on safe production in the prior art.

[0006] In a first aspect, this application provides a cleaning module, which includes:

[0007] The cleaning chamber is configured to store cleaning agents and clean the target object;

[0008] The first lifting component is configured to move the target object in the vertical direction so that the target object enters or leaves the cleaning chamber, and has a cleaning position and a drying position during the vertical movement of the target object, with the drying position being higher than the cleaning position.

[0009] The drying assembly is configured to disperse cleaning agent onto the target object located at the drying position via airflow.

[0010] In an optional embodiment, the first lifting assembly includes a first driving member and a first pallet assembly, wherein the first driving member is configured to drive the first pallet assembly to reciprocate in the vertical direction.

[0011] In an optional implementation, the first drive unit includes a three-position five-way solenoid valve and a cylinder connected to each other.

[0012] In an alternative implementation, the first drive element includes an intrinsically safe motor and a synchronous belt connected to each other.

[0013] In an alternative implementation, the first drive unit includes an intrinsically safe motor and a lead screw assembly connected to each other.

[0014] In an optional embodiment, the first pallet assembly includes a support portion and a first connecting portion. The support portion is used to directly support the target object, and the first connecting portion is used to connect the support portion to the moving part of the first drive member. The first lifting assembly also includes a first guide rail extending in a vertical direction, and the first connecting portion slides with the first guide rail.

[0015] In an optional implementation, the supporting part is a frame structure with a hollow center.

[0016] In an optional embodiment, the drying assembly includes a second drive and a nozzle, the second drive being configured to drive the nozzle to reciprocate in a horizontal direction, the nozzle being configured to spray airflow onto the target object.

[0017] In an optional embodiment, the drying assembly further includes a second connecting portion and a horizontally extending second guide rail. The nozzle is connected to the movable portion of the second drive member through the second connecting portion, and the second connecting portion slides into the second guide rail.

[0018] In an optional embodiment, the cleaning chamber includes a door with a slit formed at the edge of the door.

[0019] In an optional embodiment, the door is an elastic door, which always tends to close the cleaning chamber under its own elastic force. The first pallet assembly includes a support part for directly supporting the target object. The support part is provided with rollers, the rotation axis of the rollers is parallel to the rotation axis of the elastic door, and the rollers protrude from the bottom surface of the support part.

[0020] In an optional embodiment, the bottom of the cleaning chamber is provided with an ultrasonic generator and / or a liquid agitation device.

[0021] In an optional embodiment, the liquid disturbance device is a bubble generating device, a vortex generating device, a shaking device, or a stirring device.

[0022] In an optional implementation, a heat dissipation chamber is also provided at the bottom of the cleaning chamber.

[0023] In an optional implementation, multiple cleaning modules are provided.

[0024] Secondly, embodiments of this application also provide a cleaning device, which includes:

[0025] The main unit includes a frame, a loading / unloading module, and a cleaning module as provided in the first aspect of this application. The main unit contains a pneumatically driven execution unit. The frame has multiple workstations. At least one loading / unloading module is configured to load or unload a target object. Several cleaning modules are configured to clean the target object. The pneumatically driven execution unit is configured to perform a preset action on the target object.

[0026] A cleaning agent storage unit, configured to store cleaning agent, is used to supply the cleaning agent to each of the cleaning modules; and

[0027] An electrical processing unit is configured to control the pneumatically driven actuator.

[0028] In an optional embodiment, the cleaning equipment further includes a cleaning agent recovery module, which comprises:

[0029] The solidification tank is equipped with an adsorbent filter material, which is configured to increase the local concentration of resin impurities in the cleaning agent and perform primary filtration of the cleaning agent.

[0030] The light module is configured to illuminate the cleaning agent in the curing tank.

[0031] The settling tank is configured to settle the filtered cleaning agent.

[0032] In an optional embodiment, the cleaning equipment further includes:

[0033] An organic solvent monitoring unit is configured to detect the concentration of organic solvents in the environment and to shut down and / or disconnect the main power supply when the concentration of organic solvents exceeds a safe threshold. Thirdly, embodiments of this application also provide a cleaning method implemented using the cleaning equipment provided in the second aspect of this application. The cleaning equipment is equipped with multiple cleaning modules. The cleaning method includes: after cleaning a target object in one cleaning module, drying the cleaning agent carried on the target object, then transferring the target object to the next cleaning module for cleaning and drying, until all cleaning modules have completed cleaning and drying of the target object.

[0034] The cleaning module, cleaning equipment, and cleaning method provided in this application integrate the cleaning chamber and the drying assembly. After the first lifting assembly completes the cleaning of the target object at the cleaning position, it is then moved to the drying position to be dried by the drying assembly, achieving automated execution without relying on manual operation and reducing the harm of cleaning agents to the human body. Furthermore, in multi-stage cleaning, after the previous stage of cleaning is completed, the cleaning agent carried on the target object can be dried before entering the next stage of cleaning. This allows for multiple cleaning and drying processes, preventing the cleaning agent from the previous stage from contaminating the cleaning agent in the next stage, reducing the use of cleaning agents, and facilitating safe production management. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 An exploded view of the cleaning module provided in an embodiment of this application;

[0038] Figure 2 A longitudinal sectional view of the cleaning module provided in an embodiment of this application;

[0039] Figure 3 A cross-sectional view of the cleaning module provided in an embodiment of this application;

[0040] Figure 4 This is a three-dimensional structural diagram of a cleaning module provided in an embodiment of this application;

[0041] Figure 5 A schematic diagram of the structure of a 3D printed tooth model part;

[0042] Figure 6 This is a schematic diagram of the structure of the first lifting component in the cleaning module provided in the embodiments of this application;

[0043] Figure 7 This is a schematic diagram of the structure of the first lifting component and the cleaning basket in the cleaning module provided in the embodiments of this application;

[0044] Figure 8 This is a schematic diagram of the structure of the cleaning basket provided in an embodiment of this application;

[0045] Figure 9 This is a schematic diagram of the structure of the cleaning equipment provided in the embodiments of this application;

[0046] Figure 10 A schematic diagram of the structure of the electrical processing unit provided in the embodiments of this application. Figure 1 ;

[0047] Figure 11 This is an exploded view of the main unit in the cleaning equipment provided in the embodiments of this application;

[0048] Figure 12 This is a schematic diagram of the front side of the main unit in the cleaning equipment provided in the embodiments of this application;

[0049] Figure 13 This is a schematic diagram of the rear structure of the main unit in the cleaning equipment provided in the embodiments of this application;

[0050] Figure 14 This is a schematic diagram of the loading and unloading module in the cleaning equipment provided in the embodiments of this application;

[0051] Figure 15 This is a schematic diagram of the transport module in the cleaning equipment provided in the embodiments of this application;

[0052] Figure 16 A schematic diagram of the structure of the electrical processing unit provided in the embodiments of this application. Figure 2 ;

[0053] Figure 17 This is a schematic diagram of the cleaning agent recovery module provided in an embodiment of this application;

[0054] Figure 18 A cross-sectional view of the cleaning agent recovery module provided in an embodiment of this application;

[0055] Figure 19 A cross-sectional view of a sedimentation tank in a cleaning agent recovery module provided in an embodiment of this application;

[0056] Figure 20 A schematic diagram of another settling tank in the cleaning agent recovery module provided in this application embodiment; and

[0057] Figure 21 This is a schematic diagram illustrating the working principle of the organic solvent monitoring unit provided in the embodiments of this application.

[0058] Figure label:

[0059] 100. Main unit;

[0060] 110. Frame; 111. Loading station; 112. Cleaning station; 113. Unloading station; 114. Second lifting assembly;

[0061] 120. Loading and unloading module;

[0062] 130. Cleaning module; 1301. First cleaning module; 1302. Second cleaning module; 1303. Third cleaning module;

[0063] 131. First lifting assembly; 1311. First driving component; 1312. First pallet assembly; 13121. Bearing part; 13122. First connecting part; 13123. Roller; 1313. First guide rail;

[0064] 132. Cleaning chamber;

[0065] 133. Drying assembly; 1331. Second drive component; 1332. Nozzle; 1333. Second connecting part; 1334. Second guide rail;

[0066] 134. Door; 135. Ultrasonic generator; 136. Liquid disturbance device; 137. Heat dissipation chamber; 138. Outer frame;

[0067] 140. Handling module; 141. Fourth drive component; 142. Mechanical gripper;

[0068] 150. Cleaning basket; 160. Electrical control module; 170. Cleaning agent replenishment device;

[0069] 200. Cleaning agent storage unit;

[0070] 300. Electrical processing unit; 310. Cabinet; 320. High-voltage module; 321. Main power supply; 330. Partition;

[0071] 400. Cleaning agent recovery module;

[0072] 410. Solidification tank; 411. Adsorbent filter material; 420. Lighting module; 421. Air duct housing; 422. Heat sink; 423. Light source; 424. Air inlet; 425. Air outlet;

[0073] 430. Settling tank; 431. Tank body; 432. Oil baffle; 433. Flow baffle; 434. Flow channel; 435. Overflow channel; 4361. First settling tank; 4362. Second settling tank; 4363. Third settling tank; 437. Heating module; 438. Water outlet baffle;

[0074] 440. Secondary filtration module; 450. Tertiary filtration module; 460. Bag filter; 470. Diaphragm pump;

[0075] 500 Organic solvent monitoring unit; 510 Independent power supply; 520 Organic solvent sensor; 530 Controller; 540 Emergency stop module; 550 Contactor; 560 Relay. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0077] The cleaning module 130 according to an embodiment of this application is described below with reference to the accompanying drawings. Figure 1-4 As shown, the cleaning module 130 includes a cleaning chamber 132, a first lifting assembly 131, and a drying assembly 133. The cleaning chamber 132 is configured to store cleaning agent and clean the target object. The first lifting assembly 131 is configured to move the target object vertically, allowing it to enter or leave the cleaning chamber 132. During the vertical movement of the target object, it has a cleaning position and a drying position, with the drying position being higher than the cleaning position. The drying assembly 133 is configured to disperse the cleaning agent on the target object located at the drying position using airflow. The cleaning chamber 132 of the cleaning module 130 has a top-opening structure, forming a cleaning space inside. After the first lifting assembly 131 receives the target object, it moves the target object downwards, allowing it to enter the cleaning position inside the cleaning chamber 132 and be immersed in the cleaning agent. After cleaning is completed, the first lifting assembly 131 rises, lifting the target object out of the cleaning agent in the cleaning chamber 132 and reaching the drying position.

[0078] Furthermore, during the up-and-down movement of the target object by the first lifting component 131, the target object also has a receiving position, which is higher than the drying position. Specifically, the first lifting component 131 can rise to the high receiving position to receive the target object located directly above the cleaning chamber 132, and then lower the target object to the low cleaning position, which is located inside the cleaning chamber 132. The target object is cleaned by the cleaning agent inside the cleaning chamber 132. After cleaning, the first lifting component 131 raises the target object to the middle drying position, where the drying component 133 dries the cleaning agent on the surface of the target object.

[0079] In this embodiment, the cleaning module 130 integrates the cleaning chamber 132 and the drying component 133. After the first lifting component 131 moves the target object to the cleaning position to complete the cleaning, it moves the target object to the drying position to be dried by the drying component 133, thus achieving automated execution. It can also perform multiple cleaning and drying operations without relying on manual execution, reducing the harm of cleaning agents to the human body and facilitating safe production management.

[0080] The target object moved by the first lifting assembly 131 can be the printout to be cleaned itself, or it can be the printout to be cleaned and the container holding the printout to be cleaned, to prevent direct contact with the printout to be cleaned and avoid damage. The container is preferably as follows: Figure 8 The cleaning basket 150 shown not only holds the printed parts to be cleaned but also allows cleaning fluid to pass through the container to clean the printed parts. Optionally, the cleaning basket 150 is made of stainless steel hollow capillary tubes and small-diameter wire wound and welded together, which can significantly reduce the weight of the cleaning agent, increase the mesh spacing, and features easy handling, low cost, and high drying efficiency. Furthermore, a customized auxiliary support can be added to the cleaning basket 150 to limit its placement in complex applications, improving the efficiency and quality of cleaning and drying. Specifically, the cleaning basket 150 can be made of 4-8mm stainless steel hollow tubes combined with stainless steel wire less than 1mm thick, through bending and winding welding. The mesh spacing is rectangular, with the narrow side spacing not exceeding 10mm to ensure that small printed parts cannot fall out, and the long side spacing can be made according to 30-60mm to ensure unobstructed drying of the cleaning agent. Compared with commercially available cost baskets, the manufacturing cost can be reduced by 30%, and the weight can be reduced by more than 50%, making it more convenient to use. In addition, by bending and welding stainless steel hollow tubes, an auxiliary support can be made that can be inserted into the cleaning basket 150. This allows users to focus on cleaning and drying the nozzles 1332 of the drying assembly 133 when stacking printed parts, thereby improving cleaning efficiency and quality.

[0081] In alternative implementations, such as Figure 1-4 and Figure 6-7As shown, the first lifting assembly 131 includes a first driving member 1311 and a first pallet assembly 1312. The first driving member 1311 is configured to drive the first pallet assembly 1312 to reciprocate in the vertical direction. The first pallet assembly 1312 is used to carry the target object and, under the force of the first driving member 1311, drives the target object to rise or fall. The first driving member 1311 can be a three-position five-way solenoid valve and a cylinder connected to each other. The cylinder extends in the vertical direction, and both ends of the cylinder are fixed to the cleaning module 130 by fasteners. The cylinder, through the three-position five-way solenoid valve and a sensor, utilizes the center-sealing function of the solenoid valve to lock the cylinder at any position during its vertical stroke, thereby allowing the first pallet assembly 1312 and the target object on it to remain in the receiving position, the cleaning position, or the drying position. The first pallet assembly 1312 includes a support portion 13121 and a first connecting portion 13122. The support portion 13121 directly supports the target object, and the first connecting portion 13122 connects the support portion to the moving part of the first driving member 1311. To make the up-and-down movement more stable, the first lifting assembly 131 also includes a vertically extending first guide rail 1313, and the first connecting portion 13122 slides with the first guide rail 1313. The support portion 13121 is preferably a frame structure with a hollow center, allowing cleaning agent to pass through, improving the cleaning effect and facilitating the discharge of residual cleaning agent after cleaning. In addition, the first drive unit 1311 can also be an intrinsically safe motor and a synchronous belt connected to each other. The intrinsically safe motor drives the synchronous belt to rotate, and the synchronous belt drives the first pallet assembly 1312 to reciprocate in the vertical direction. The first drive unit 1311 can also be an intrinsically safe motor and a lead screw assembly connected to each other. The rotational motion of the intrinsically safe motor is converted into the linear motion of the lead screw assembly, and the lead screw assembly drives the first pallet assembly 1312 to reciprocate in the vertical direction.

[0082] In alternative implementations, such as Figure 1-3 As shown, the cleaning module 130 also includes an outer frame 138, which is fitted over the cleaning chamber 132. On the one hand, the outer frame 138 can provide some protection for the cleaning chamber 132 and the structure between the outer frame 138 and the cleaning chamber 132. On the other hand, the outer frame 138 is used to achieve structural cooperation 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.

[0083] In an optional embodiment, the drying assembly 133 of the cleaning module 130 can be directly installed in the cleaning chamber 132. The drying module is configured to disperse the cleaning agent on the target object through airflow. Each cleaning module 130 is provided with a set of drying assemblies 133. For example, in a cleaning device with three cleaning modules 130 respectively completing pre-cleaning, coarse cleaning, and fine cleaning, after the target object is pre-cleaned in the cleaning chamber 132 of the first cleaning module 1301, the residual cleaning agent on the target object is dried by the drying assembly 133 on the first cleaning module 1301 before entering the cleaning chamber 132 of the second cleaning module 1302 for coarse cleaning. This avoids contaminating the coarse cleaning organic cleaning agent in the cleaning chamber 132 of the second module. After the initial cleaning in the cleaning chamber 132 of module 1302, the residual cleaning agent on the target object is dried by the drying component 133 of the second cleaning module 1302 before entering the cleaning chamber 132 of the third cleaning module 1303 for further cleaning. This avoids contaminating the fine cleaning organic cleaning agent in the cleaning chamber 132 of the third cleaning module 1303. In other words, drying is performed after each cleaning cycle before proceeding to the next stage of cleaning, preventing the target object from carrying cleaning fluid from the previous stage and contaminating the cleaning agent in the cleaning chamber 132 of the next cleaning module, thus reducing cleaning agent consumption. Furthermore, after the target object completes the fine cleaning in the cleaning chamber 132 of the third cleaning module 1303, the residual cleaning agent on the target object is dried by the drying component 133 of the third cleaning module 1303 before unloading, which avoids contamination of the loading / unloading modules or other structures.

[0084] In alternative implementations, such as Figure 1-4 As shown, the drying assembly 133 includes a second drive member 1331 and a nozzle 1332. The nozzle 1332 is located above the cleaning chamber 132. The second drive member 1331 is configured to drive the nozzle 1332 to reciprocate in the horizontal direction. The nozzle 1332 is configured to spray airflow onto the target object. The second drive member 1331 includes, but is not limited to, a cylinder, an intrinsically safe motor-driven synchronous belt, or an intrinsically safe motor-driven lead screw assembly. During operation, the nozzle 1332 is driven by the second drive member 1331 to reciprocate above the target object. 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 exists in both gaseous and liquid phases. The gaseous cleaning agent can be drawn to the outside through the equipment's exhaust system, while the liquid cleaning agent can be drained back into the cleaning chamber 132 through the side wall of the cleaning chamber 132 body 431. The airflow used to disperse residual cleaning agent can be compressed air generated by an air compressor, or it can be airflow generated by an ion fan or a safety fan. The use of ion fans and safety fans can reduce the limitations of the equipment in terms of low field requirements.

[0085] Specifically, the drying assembly 133 also includes a second connecting part 1333, a second driving member 1331 fixed on the outer wall of the cleaning chamber 132, and a nozzle 1332 connected to the movable part of the second driving member 1331 through the second connecting part 1333. In order to make the movement process more stable, the drying assembly 133 also includes a second guide rail 1334 extending in the horizontal direction, and the second connecting part 1333 and the second guide rail 1334 slide together.

[0086] The cleaning chamber 132 of the cleaning module 130 can store various cleaning agents as needed. Since 3D printed parts generally have complex shapes and the resin materials are typically high-viscosity mixed organic materials, cleaning is quite difficult. Existing cleaning solutions mainly involve 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, water-based cleaning agents have lower cleaning efficiency, and organic cleaning agents are usually the main choice for mass production. This results in the need for a large amount of organic cleaning agents during the cleaning process. These cleaning agents are mostly flammable and explosive materials, costly, have a strong pungent odor, are harmful to the human body, and are highly volatile, flammable, and explosive. Large-scale use or storage poses dangers and safety hazards, and even slight carelessness could cause a major accident. Therefore, it is necessary to develop a safe cleaning module 130 that reduces the amount of organic cleaning agents used. Based on this, in some embodiments of this application, multiple cleaning modules 130 can be used together. For example, the cleaning module 130 includes a first cleaning module 1301, a second cleaning module 1302, and a third cleaning module 1303. The cleaning chamber 132 of the first cleaning module 1301 is used to store water-based cleaning agent, the cleaning chamber 132 of the second cleaning module 1302 is used to store coarse organic cleaning agent, and the cleaning chamber 132 of the third cleaning module 1303 is used to store fine organic cleaning agent.

[0087] In the above embodiment, during the operation of the cleaning module 130, 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 for pre-cleaning with a water-based cleaning agent; then the first lifting component 131 of the second cleaning module 1302 transports the target object to the cleaning chamber 132 of the second cleaning module 1302 for rough cleaning with a coarse organic cleaning agent; then 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 for fine cleaning with a fine organic cleaning agent. The cleaning equipment is equipped with three cleaning modules 130. The first cleaning module 1301 uses a water-based cleaning agent. This water-based cleaning agent utilizes alkaline inorganic compounds as its main raw material. The alkaline inorganic compounds and esters in the 3D printing materials can undergo a saponification reaction to produce alcohols and carboxylate salts that are soluble in water, achieving the cleaning purpose. Pre-cleaning with the water-based cleaning agent in the first cleaning module 1301 reduces the need for subsequent use of organic cleaning agents, thus lowering costs, reducing the irritation of the cleaning agent, avoiding the use of flammable and explosive materials, and improving the safety of the cleaning process. Optionally, the mass ratio of the components 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 utilizing the saponification reaction between alkaline inorganic compounds and esters, the surfactants and emulsifiers in the alkaline cleaning agent formulation also play a role in dissolving, emulsifying, and dispersing, reducing surface tension and thus removing most of the resin from the surface of the component to be cleaned, improving the cleaning effect. Furthermore, while utilizing the saponification reaction between alkaline inorganic compounds and esters, the surfactants and emulsifiers in the alkaline cleaning agent formulation also play a role in dissolving, emulsifying, and dispersing, reducing surface tension and thus removing most of the resin from the surface of the printed parts, improving the cleaning effect.

[0088] The third cleaning module 1303 uses newly purchased organic cleaning agent for fine cleaning, while the second cleaning module 1302 uses recycled organic cleaning agent from the third cleaning module 1303 for coarse cleaning. This allows the printed materials to be cleaned in batches, and the two organic cleaning processes improve the cleaning effect. Since the coarse cleaning agent in the second cleaning module 1302 is recycled 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, reducing the amount of organic cleaning agent consumed and thus reducing the capacity of the cleaning agent storage module, thereby reducing safety risks. Optionally, a valve can be installed at the bottom of the cleaning module 130, connected to an external collection chamber via a pipe. When the cleaning agent in the cleaning chamber 132 becomes ineffective, the valve at the bottom of the cleaning module 130 opens, and the ineffective cleaning agent is discharged to the external collection chamber through the pipe by gravity pressure difference.

[0089] To verify the consumption of organic cleaning agent when the cleaning module 130 is used in conjunction with the above embodiment, Figure 5 The tooth model parts shown were subjected to cleaning tests. 20 pieces were cleaned per batch, and cleaning continued until the surface was clean. The amount of organic cleaning agent consumed for each tooth model part was calculated, and the cleaning agent consumption of different methods was compared. Single-compartment cleaning used only one cleaning module 130 containing organic cleaning agent to clean the parts. Three-compartment cleaning used the first cleaning module 1301, the second cleaning module 1302, and the third cleaning module 1303 from the above embodiment for continuous cleaning. The organic cleaning agents used were all alcohol, and the water-based cleaning agents included water and alkaline inorganic compounds. Alkaline inorganic compounds were used as the main raw material for the cleaning agent. Alkaline inorganic compounds and esters can undergo a saponification reaction to produce alcohols and carboxylates that are soluble in water, achieving the cleaning purpose. The test results are shown in Table 1.

[0090] Table 1

[0091]

[0092] As can be seen from the above results, in the three-compartment cleaning scheme of this embodiment, the remaining alcohol after cleaning by the third cleaning module 1303 can be used for rough cleaning by the second cleaning module 1302. Therefore, it is only necessary to calculate the consumption of the third cleaning module 1303. Thus, the cleaning amount of the same volume of organic cleaning agent can reach 2.65 times that of single-compartment cleaning, which can greatly reduce the consumption of organic cleaning agent.

[0093] In alternative implementations, such as Figure 1-4As shown, each cleaning chamber 132 of the cleaning module 130 includes a chamber door 134. A gap is formed at the edge of the chamber door 134, typically 1-3 mm wide. The chamber door 134 primarily serves to isolate the cleaning agent within the cleaning chamber 132 from the drying assembly 133, reducing the evaporation of the cleaning agent, extending its lifespan, and mitigating safety risks. The second drive unit 1331 drives the nozzle 1332 to move back and forth above the target object, using airflow to disperse the cleaning agent on and inside the target object's surface through the nozzle 1332. The liquid phase of the dispersed cleaning agent is channeled 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, while a small portion remains in the gap, preventing the internal cleaning agent from evaporating.

[0094] Technicians compared the cleaning module 130 with and without door protection (134 protection). Figure 5 The cleaning effect of the tooth model printed parts was compared, and the specific test results are shown in Table 2 below.

[0095] Table 2

[0096]

[0097] As can be seen from the results in Table 2, with the same volume of organic cleaning agent, the cleaning capacity of the cleaning equipment in this embodiment of the application can achieve a 3.51-fold increase. This means that the daily storage of organic cleaning agent required by the equipment is reduced by 2 / 3, significantly reducing the safety risks associated with organic cleaning agents.

[0098] Specifically, the door 134 can be a resilient door, which tends to close the cleaning chamber 132 under its own elastic force. For example, after the first pallet assembly 1312 is raised to the highest receiving position by the cylinder controlled by the three-position five-way solenoid valve, the first pallet assembly 1312 receives the incoming target material and then moves downward. The bottom of the first pallet assembly 1312 can overcome the elastic force to open the resilient door of the cleaning chamber 132, allowing the target material to be placed into the cleaning position inside the cleaning agent. The cleaning agent cleans the target material. After cleaning, the first pallet assembly 1312 and the target material are raised to the middle drying position by the cylinder controlled by the three-position five-way solenoid valve. After the first pallet assembly 1312 leaves the resilient door position, the resilient door closes under the action of elastic force, isolating the cleaning agent in the cleaning chamber 132 from the target material. Optionally, the door 134 can also be an electrically or pneumatically controlled revolving door or an electrically or pneumatically controlled sliding door, which can improve the service life of the corresponding mechanism. Preferably, as Figure 4 and 5As shown, a roller 13123 is provided on the bearing portion 13121 of the first pallet assembly 1312. 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. During the downward movement of the first pallet assembly 1312, the roller 13123 contacts the elastic door and pushes it 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.

[0099] In alternative implementations, such as Figure 2 As shown, the bottom of the cleaning chamber 132 is equipped with an ultrasonic generator 135 and / or a liquid agitation device 136. The ultrasonic generator 135 generates ultrasonic waves, and the liquid agitation device 136 creates a turbulent flow effect on the cleaning fluid, utilizing the cleaning agent to physically flush the printed parts to be cleaned, thereby improving the cleaning effect. The liquid agitation device 136 includes, but is not limited to, a bubble generator, a vortex generator, a vibration device, a centrifugal device, or a stirring device; that is, the agitation method of the liquid agitation device 136 includes, but is not limited to, at least one of bubbling, vortexing, vibration, centrifugation, and stirring. By using the cleaning agent of this application to clean the resin on the target object, and in conjunction with the ultrasonic generator 135 or the liquid agitation device 136, a certain impact can be applied to the target object, making it easier to separate the resin from the printed parts to be cleaned. Furthermore, under the action of the impact force, it is easier to carry away the waste liquid after cleaning with the cleaning agent, which can significantly improve the cleaning effect and shorten the cleaning time.

[0100] In alternative implementations, such as Figure 1-3 As shown, a heat dissipation chamber 137 is also 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 agitation device 136 will cause the cleaning agent temperature to rise. The rise in the cleaning agent temperature will damage the printed parts and there is also a risk of explosion. The purpose of the heat dissipation chamber 137 is to cool down the cleaning agent and control the cleaning agent temperature to avoid safety risks. Specifically, the heat dissipation chamber 137 has an opening at the top, and the bottom of the cleaning chamber 132 extends into the heat dissipation chamber 137. Both the heat dissipation chamber 137 and the cleaning chamber 132 are 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 chamber 137 is turned outward and stacked with the support plate, so that the heat dissipation chamber 137 is mounted on the support plate. A liquid addition funnel is provided at the top of the heat dissipation chamber 137 for adding heat exchange medium into the heat dissipation chamber 137. A drain valve is provided at the bottom of the heat dissipation chamber 137 for discharging heat exchange medium from the heat dissipation chamber 137. This allows the heat exchange medium to be replenished and released within the heat dissipation chamber 137. If necessary, it can also be used to achieve the circulation of heat exchange medium in the heat dissipation chamber 137, thereby improving heat exchange efficiency.

[0101] The cleaning process requires a large amount of organic solvents, most of which are flammable and explosive. These solvents are expensive, have a strong pungent odor, are harmful to human health, and are highly volatile and flammable and explosive. Large-scale use or storage poses a danger and safety hazard. Existing automation technologies typically use PLCs or other control modules to drive lifting platforms, conveyor chains, and other transmission mechanisms for loading and unloading, along with electric and pneumatic grippers for product handling and transportation. Solvents are then replaced using pumps. This entire technology requires numerous high- and low-voltage electrical components. Traditional explosion-proof solutions, such as those using intrinsically safe components, cannot fully cover all components, and even if all components were replaced, the automation would be meaningless from a cost-benefit perspective. Considering the existing automation technology and the flammable and explosive nature of the cleaning solvents, the safety of the products directly produced is extremely low, and even a slight mistake could lead to a major accident. Therefore, developing safe cleaning equipment is of great significance. Based on this, in addition to the cleaning module 130 provided in this application embodiment, this application embodiment also provides a cleaning device.

[0102] The cleaning apparatus according to embodiments of this application is described below with reference to the accompanying drawings. Figure 9 As shown, the cleaning equipment mainly consists of three parts: the main unit 100, the cleaning agent storage unit 200, and the electrical processing unit 300.

[0103] The main unit 100 is used to perform specific cleaning work. The main unit 100 includes a frame 110, a loading / unloading module 120, and a cleaning module 130. The main unit 100 is equipped with a pneumatically driven execution unit. The frame 110 has multiple workstations. The loading / unloading module 120 has at least one module configured to load or unload the target object. The cleaning modules 130 have several modules configured to clean the target object. The pneumatically driven execution unit is configured to perform preset actions on the target object. The cleaning agent storage unit 200 is configured to store cleaning agent and supply cleaning agent to each cleaning module 130. The cleaning agent storage unit 200 can be equipped with a non-electrically powered communicating vessel-type level gauge to detect the liquid level within the cleaning agent storage unit 200, reducing safety risks. Figure 10 As shown, the electrical processing unit 300 is configured as an actuator to control pneumatic drives. The electrical processing unit 300 includes a cabinet 310 and a portion of a high-voltage module 320 encapsulated within the cabinet 310. The high-voltage module 320 is used to supply power to the main unit 100. The cleaning module 130 is the cleaning module described in the aforementioned embodiments.

[0104] It should be noted that, in some embodiments, the host unit 100, the cleaning agent storage unit 200, and the electrical processing unit 300 can be as follows: Figure 9As shown, they are arranged separately; in some embodiments, the main 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 main unit 100, the cleaning agent storage unit 200 and the electrical processing unit 300 may be integrated together, while the other is arranged separately.

[0105] The cleaning equipment in this embodiment uses pneumatic motion control, which reduces electrical contact with solvents and makes the cleaning process safer. Furthermore, the wiring of the pneumatically driven actuator is simpler.

[0106] In some embodiments, the pneumatically driven actuator includes a transport module 140 configured to transport a target object, allowing the target object to move or remain above each workstation. Specifically, the transport module 140 is mounted on the frame 110, and can transport the target object above any workstation and hold it above any workstation.

[0107] like Figure 15As shown, the conveying module 140 includes a fourth drive member 141 and a mechanical gripper 142. The fourth drive member 141 is configured to drive the mechanical gripper 142 to reciprocate in the horizontal direction. The mechanical gripper 141 is configured to grip or release a target object. The fourth drive member 142 is preferably a cylinder. The mechanical gripper 142 is located above the workstation and is used to grip the target object from above the previous workstation and then release the target object above the next workstation. Preferably, the workstations are equally spaced, and the conveying module 140 also has multiple mechanical grippers 142 equally spaced. The fourth drive member 141 simultaneously drives multiple mechanical grippers 142 to move, and the distance between each workstation is equal to the distance between the mechanical grippers 142. After the workstations form an equally spaced multi-station layout, when one mechanical gripper 142 is facing one workstation, other mechanical grippers 142 can also be facing other workstations. The mechanical grippers 142 are located above each workstation. When the target object corresponding to each workstation is raised to its highest position, the mechanical gripper 142 moves to grab the target object. Multiple mechanical grippers 142 are driven by the same first driving component 141 to move, which can simultaneously move the target object from one workstation to the next workstation position. After the target object is in place, the corresponding workstation receives the target object, and the mechanical gripper 142 opens to release the target object. This allows multiple cleaning process lines to work simultaneously, and the mechanical control is relatively simple, improving production efficiency. Preferably, the number of workstations is one more than the number of mechanical grippers 142. This allows for better coordination between the mechanical grippers 142 and each workstation. 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. In the second position state, the four mechanical grippers 142 move simultaneously by a distance of one spacing, so that the four grippers are respectively facing the last three workstations.

[0108] It should be noted that in the above embodiments, the conveying module of the cleaning equipment is pneumatically driven, but other actuators of the cleaning equipment (such as the first lifting assembly 131, the drying assembly 133, and the liquid disturbance device 136) can be driven by any method, including but not limited to pneumatic and electric drives.

[0109] In some embodiments, the pneumatically driven actuator further includes a first lifting assembly 131 in the cleaning module 130. The first lifting assembly 131 is configured to move the target object vertically within the cleaning module. Specifically, after the first lifting assembly 131 receives the target object from the transport module 140, it moves the target object downwards, allowing it to enter the cleaning chamber 132 and be immersed in the cleaning agent within the chamber. After cleaning is completed, the first lifting assembly 131 rises, moving the target object out of the cleaning agent within the cleaning chamber 132. The first lifting assembly 131 includes a first driving member 1311 and a first pallet assembly 1312. The first driving member 1311 is configured to drive the first pallet assembly 1312 to reciprocate vertically. The first pallet assembly 1312 carries the target object and, under the force of the first driving member 1311, moves the target object upwards or downwards. The first driving component 1311 consists of a three-position five-way solenoid valve and a cylinder connected to each other. The cylinder extends vertically, and both ends of the cylinder are fixed to the cleaning module 130 by fasteners. The cylinder, through the three-position five-way solenoid valve and a sensor, utilizes the center-sealing function of the solenoid valve to lock the cylinder at any position during its vertical stroke, thereby allowing the first pallet assembly 1312 and the target object on it to remain at any position. It should be noted that in this embodiment, the first lifting component 131 of the cleaning equipment is pneumatically driven, but other actuators of the cleaning equipment (such as the drying assembly 133, the liquid agitation device 136, and the conveying module 140) can be driven by any method, including but not limited to pneumatic and electric drives.

[0110] In some embodiments, the pneumatically driven actuator further includes a liquid agitation device 136 of the cleaning module 130, which is disposed at the bottom of the cleaning chamber 132. The liquid agitation device 136 creates a turbulent flow effect on the cleaning fluid, utilizing the cleaning agent to physically flush the printed material to be cleaned, thereby improving the cleaning effect. The liquid agitation device 136 includes, but is not limited to, a bubble generator, a vortex generator, a vibration device, or a stirring device; that is, the agitation method of the liquid agitation device 136 includes, but is not limited to, at least one of bubbling, vortexing, vibration, and stirring. By using the cleaning agent of this application to clean the resin on the target object, the liquid agitation device 136 can impact the target object, making it easier to separate the resin from the printed material to be cleaned. Furthermore, the impact force also facilitates the removal of waste liquid after cleaning with the cleaning agent, significantly improving the cleaning effect and shortening the cleaning time. It should be noted that in this embodiment, the liquid agitation device 136 of the cleaning equipment is pneumatically driven, but other actuators of the cleaning equipment (such as the first lifting assembly 131, the drying assembly 133, and the conveying module 140) can be driven by any method, including but not limited to pneumatic and electric drives.

[0111] In some embodiments, the frame 110 is the main supporting structure of the host unit 100. The multiple workstations provided on the frame 110 may include at least one of a loading workstation 111, several cleaning workstations 112, and a unloading workstation 113, as well as at least one of a UV curing workstation, a drying workstation, and a thermosetting workstation. The loading / unloading module 120 is disposed at the loading workstation 111 and the unloading workstation 113, and the cleaning module 130 is disposed at the cleaning workstation 112. Second lifting components 114, configured to move the target object vertically, are provided at the loading workstation 111 and the unloading workstation 113. Figure 13 As shown, a second lifting assembly 114 is provided at both the loading station 111 and the unloading station 113. The second lifting assembly 114 is configured to move the target object vertically to assist the loading / unloading module 120 in performing its loading / unloading functions. Specifically, at the loading station 111, the second lifting assembly 114 is used to raise the target object on the loading / unloading module 120 from a low position to a high position, and dock with the transport module 140. The transport module 140 then 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 lower the target object from a high position onto the low position of the loading / unloading module 120. Optionally, the second lifting assembly 114 includes a third driving member and a second pallet assembly. The third driving member is configured to drive the second pallet assembly to reciprocate vertically. The specific configuration of the third drive component can be referenced to the first drive component 1311, and the specific configuration of the second pallet assembly can be referenced to the first pallet assembly 1312. The difference between the two is that the first lifting assembly 131 is set on the cleaning module 130, and the second lifting assembly 114 is set at the loading station 111 or the unloading station 113. Other specific configurations can be referred to each other, and will not be elaborated here.

[0112] In some embodiments, the cleaning module 130 includes a cleaning chamber 132 and a third lifting assembly. The cleaning chamber 132 has a top-opening structure and forms a cleaning space inside. The cleaning chamber 132 is configured to store cleaning agent and clean the target object. The third lifting assembly is configured to move the target object vertically within the cleaning module. After the target object is received by the transport module 140, the third lifting assembly moves the target object downwards, allowing it to enter the cleaning chamber 132 and be immersed in the cleaning agent within it. After cleaning, the third lifting assembly rises, removing the target object from the cleaning agent in the cleaning chamber 132. The third lifting assembly can rise to a high position to receive the target object transported by the transport module 140 directly above the corresponding workstation and lower it into the cleaning module 130 for cleaning. After cleaning, the third lifting assembly raises the target object to a high position, where it is then transported by the transport module 140 to the next workstation. The third lifting assembly specifically includes a fifth driving component and a third pallet assembly. The fifth driving component is configured to drive the third pallet assembly to reciprocate vertically. The third pallet assembly carries the target object and, under the force of the fifth driving component, moves the target object up or down. The fifth driving component can be an intrinsically safe motor and a synchronous belt connected to each other. The intrinsically safe motor drives the synchronous belt to rotate, which in turn drives the third pallet assembly to reciprocate vertically. Alternatively, the fifth driving component can be an intrinsically safe motor and a lead screw assembly connected to each other. The rotational motion of the intrinsically safe motor is converted into linear motion of the lead screw assembly, which in turn drives the third pallet assembly to reciprocate vertically.

[0113] In some embodiments, the pneumatically driven actuator further includes a drying assembly 133, configured to disperse cleaning agent on the target object via airflow. The drying assembly 133 includes a second drive member 1331 and a nozzle 1332, the nozzle 1332 being located above the cleaning chamber 132. The second drive member 1331 is configured to drive the nozzle 1332 to reciprocate horizontally, and the nozzle 1332 is configured to spray airflow onto the target object. The second drive member 1331 is preferably a cylinder. During operation, the nozzle 1332 is driven by the second drive member 1331 to reciprocate above the target object, using airflow to disperse cleaning agent on and inside the target object's surface. The dispersed cleaning agent exists in both gaseous and liquid phases. The gaseous cleaning agent can be drawn to the outside via the equipment's exhaust system, while the liquid cleaning agent can be drained back into the cleaning chamber 132 via the sidewall of the chamber body 431. The airflow used to disperse residual cleaning agent can be compressed air generated by an air compressor, or it can be airflow generated by an ion fan or a safety fan. The use of ion fans and safety fans can reduce the limitations of the equipment's requirements for the field. It should be noted that in this embodiment, the drying component 133 of the cleaning equipment is pneumatically driven, but other actuators of the cleaning equipment (e.g., the conveying module 140, the first lifting component 131, and the liquid agitation device 136) can be driven by any method, including but not limited to pneumatic and electric drives.

[0114] In some embodiments, the main unit 100 further includes a cleaning agent replenishment device 170, which can be a gravity replenishment system, an intrinsically safe electric replenishment pump, or a pneumatic replenishment pump. The cleaning agent replenishment 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.

[0115] Optionally, such as Figure 13 As shown, the cleaning agent replenishment device 170 is selected as an intrinsically safe electric liquid pump or a pneumatic liquid pump. The cleaning agent in the cleaning agent storage module is directly pumped into the cleaning chamber 132 through the pipeline by the driving force of the intrinsically safe electric liquid pump or the pneumatic liquid pump.

[0116] Optionally, the cleaning agent replenishment device 170 is a gravity replenishment system, which includes a transfer filling tank, a vacuum generator, and a level switch. The transfer filling tank is connected to the cleaning agent storage module via a pipeline. A check valve is installed at the inlet of the transfer filling tank, and a switch valve is installed at the bottom of the transfer filling tank. The vacuum generator is configured to reduce the vacuum level in the transfer filling tank. The level switch is configured to detect whether the liquid level in the transfer filling tank has reached the upper limit. The intermediate filling tank can be a customized sealed container, connected to an external cleaning agent storage module via pipeline. A one-way check valve is installed at the inlet of the intermediate filling tank, and a ball valve is installed at the bottom. A vacuum generator lowers the vacuum level inside the intermediate filling tank, and atmospheric pressure difference forces the cleaning agent from the storage module into the intermediate filling tank. A level switch detects the liquid level in the intermediate filling tank and checks if it has reached the upper limit. When the level switch detects that the upper limit has been reached, the vacuum generator is turned off, and the ball valve at the bottom of the intermediate filling tank is opened. Gravity pressure difference then replenishes the cleaning agent in the intermediate filling tank into the cleaning chamber 132. Once the liquid level in the cleaning chamber 132 reaches the target level, the ball valve is closed, and the replenishment is complete. A ball valve is preferred.

[0117] In some embodiments, the pneumatically driven actuator further includes an exhaust device configured to expel gas from the main 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 equipment is pneumatically driven, but other actuators of the cleaning equipment (e.g., the conveying module 140, the first lifting assembly 131, the drying assembly 133, and the liquid agitation device 136) can be driven by any method, including but not limited to pneumatic and electric drives.

[0118] In some implementations, such as Figure 21 As shown, the cleaning equipment also includes an organic solvent monitoring unit 500. The organic solvent monitoring unit 500 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 if 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 provides independent power to the organic solvent monitoring unit 500, making its power supply independent of the main power supply 321 of the cleaning equipment. The organic solvent sensor 520 detects the concentration of organic solvents in the environment. The actuator performs an emergency shutdown or cuts off the main power supply 321 if the organic solvent concentration exceeds a safety threshold. By setting up the organic solvent monitoring unit 500, it is possible to monitor whether the organic solvent concentration in the working environment exceeds the standard, and to promptly handle dangerous situations where the organic solvent concentration exceeds the standard, performing an emergency shutdown or cutting off the main power supply, thereby improving safety.

[0119] Optionally, the actuator includes an emergency stop module 540, which is typically mounted on the main unit 100. It can be triggered manually or automatically. Upon activation of the emergency stop module 540, the cleaning equipment shuts down urgently. The emergency stop units include, but are not limited to, the loading / unloading module 120, the cleaning module 130, the handling module 140, and the cleaning agent recovery module 400. When the organic solvent sensor 520 detects that the organic solvent exceeds a safety threshold, it can directly trigger the emergency stop module 540, causing the cleaning equipment to stop urgently. Preferably, the actuator may further include a contactor 550 for cutting off the main power supply 321. After the emergency stop module 540 is triggered, it can, on the one hand, feed back the emergency stop information signal to the controller 530, and on the other hand, directly trigger the contactor 550 through loop control, thereby cutting off the main power supply 321.

[0120] 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 the safety threshold, the controller 530 triggers the relay 560 to operate by means of signal control, thereby cutting off the main power supply 321.

[0121] It should be noted that the organic solvent sensor 520 can be used to detect various organic solvents, including but not limited to alcohol and isopropanol. When there are multiple organic solvents to be detected, the organic solvent sensor 520 can be selected as a sensor that can detect multiple organic solvents simultaneously, or multiple sensors that can detect different single organic solvents. The specific setting location and number of organic solvent sensors 520 can also be set as needed. The preferred setting location of the organic solvent sensor 520 is various locations where organic solvents are easily generated or accumulated, as well as areas with high explosion-proof requirements, including but not limited to the top of the cleaning chamber of the cleaning module 130, the periphery of the ultrasonic generator 135 of the cleaning module 130, the periphery of the drive mechanism of the first lifting component 131, the handling module 140, the electrical box module 160, the periphery of the collection chamber for collecting waste liquid, and the cabinet 310 of the electrical processing unit 300, which is equipped with the solvent recovery module 400.

[0122] In some embodiments, the pneumatically driven actuator further includes a pumping device configured to pump the cleaning agent from the cleaning agent storage unit 200 to the cleaning module 130 and to discharge the cleaning waste liquid from the cleaning module 130. It should be noted that in this embodiment, the pumping device of the cleaning equipment is pneumatically driven, but other actuators of the cleaning equipment (e.g., the conveying module 140, the first lifting assembly 131, the drying assembly 133, the liquid agitation device 136, and the exhaust device) can be driven by any method, including but not limited to pneumatic and electric drives.

[0123] In some embodiments, the cleaning equipment also includes an air source device configured to supply air to the execution unit. The air source device includes, but is not limited to, an air compressor or an air tank. This air source device can be a standalone unit, with an interface pre-installed on the cleaning equipment for connection when needed. Alternatively, the air source device can be integrated into any one of the main unit 100, the cleaning agent storage unit 200, and the electrical processing unit 300.

[0124] In some implementations, such as Figure 11 and 12 As shown, the main unit 100 includes a frame 110, a loading / unloading module 120, a cleaning module 130, and a conveying module 140. Multiple workstations are provided on the frame 110, including a loading workstation 111, several cleaning workstations 112, and a unloading workstation 113. At least one loading / unloading module 120 is provided, and each loading / unloading module 120 is detachably mounted on either the loading workstation 111 or the unloading workstation 113. Several cleaning modules 130 are provided, and each cleaning module 130 is detachably mounted on any of the cleaning workstations 112. The conveying module 140 is mounted on the frame 110 and is configured to move the target object above the workstation and to stop the target object above any workstation.

[0125] In some implementations, the loading / unloading module 120 can be configured as a single unit. During operation, the loading / unloading module 120, which carries the target object to be cleaned, is first assembled with the loading station 111. The transport module 140 transports the target object from the loading / unloading module 120 to the top of the cleaning station 112. At this point, the loading / unloading module 120 is empty after completing the loading operation. Then, the loading / unloading module 120 is transferred to the unloading station 113 and assembled with it. The transport module 140 transports the target object cleaned by the cleaning module 130 to the top of the unloading station 113, where the loading / unloading module 120 at the unloading station 113 receives and completes the unloading. In some embodiments, multiple loading and unloading modules 120 can be configured. 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 the top of the cleaning station 112. After cleaning, the transport module transports the target object cleaned by the cleaning module 130 to the top of the unloading station 113, where the loading and unloading module 120 at the unloading station 113 receives and completes the unloading.

[0126] In the cleaning equipment provided in the above embodiments, 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. Taking a cleaning equipment with three cleaning stations 112 as an example: In some usage scenarios, only two cleaning modules 130 are needed; the two cleaning modules 130 can be installed on two different cleaning stations 112. In some usage scenarios, such as... Figure 3 As shown, three cleaning modules 130 are required. The three cleaning modules 130 can be installed on the three cleaning stations 112 respectively. In some application scenarios, the positions of the cleaning modules 130 on different cleaning stations 112 can be interchanged as needed.

[0127] Specifically, the mechanical grippers 142 of the conveying module 140 are positioned above the loading station 111, the cleaning station 112, and the unloading station 113. Multiple first lifting components 131 are provided and respectively positioned above the first cleaning module 1301, the second cleaning module 1302, and the third cleaning module 1303. Second lifting components 114 are respectively positioned at the loading station 111 and the unloading station 113. The mechanical grippers 142 are used above the loading station 111, the cleaning station 112, and the unloading station 113 to achieve horizontal movement of the target object. 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 above the cleaning chamber 132 into the cleaning chamber 132, or rises from the inside of the cleaning chamber 132 to above the cleaning chamber 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 is loaded from the loading module or unloaded from the unloading module. It should be noted that the conveying module 140, the first lifting component 131, and the second lifting component 114 cooperate with each other. Specifically, after the target object in the loading module is raised to a high position by the second lifting component 114, the mechanical gripper 142 of the conveying module 140, located above the loading station 111, controls the target object. The mechanical gripper 142 moves the target object above the first cleaning module 1301. At this time, the first lifting component 131 of the first cleaning module 1301 rises to a high position to receive the target object on the mechanical gripper 142. Then, the first lifting component 131 of the first cleaning module 1301 lowers the target object into the water-based cleaning agent inside the first cleaning module 1301 for cleaning. After cleaning is completed, the first lifting component 131 of the first cleaning module 1301 raises the target object to a high position, and the mechanical gripper 142 continues to move the target object to the second cleaning module. Above 1302, the target object is received by the first lifting component 131 of the second cleaning module 1302 and lowered into the coarse cleaning organic cleaning agent inside the second cleaning module 1302 for coarse cleaning. After cleaning, the first lifting component 131 of the second cleaning module 1302 lifts the target object to a high position, and the mechanical gripper 142 continues to lift the target object to above the third cleaning module 1303. The target object is received by the first lifting component 131 of the third cleaning module 1303 and lowered into the fine cleaning organic cleaning agent inside the third cleaning module 1303 for fine cleaning. After cleaning, the first lifting component 131 of the third cleaning module 1303 lifts the target object to a high position, and the mechanical gripper 142 continues to lift the target object to above the unloading station 113. The second lifting component 114 at the unloading station 113 carries the target object and lowers it from the high position onto the unloading module 120 for unloading.

[0128] In the cleaning equipment provided in this application embodiment, the loading / unloading module 120 and the cleaning module 130 are respectively made into standardized modules. The combination and 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.

[0129] In an optional implementation, the loading / unloading module 120 is as follows: Figure 14 The movable trolley shown can stack and store a certain number of cleaning baskets 150. Each cleaning basket 150 can hold a certain amount of printable parts to be cleaned. The movable trolley can be pushed into the loading station 111 by the frame 110 for the mechanical grippers 142 of the transport module 140 to grab the target object. The movable trolley can also be pushed into the unloading station 113 by the frame 110 for receiving the target object released by the mechanical grippers 142 of the transport module 140. Optionally, in addition to using the movable trolley as the loading and unloading module 120 for loading and unloading, the loading and unloading module 120 can also adopt a continuous conveyor belt or a rotary feeding table.

[0130] Cleaning equipment requires a large number of strong and weak electrical components. Traditional explosion-proof solutions, such as those using intrinsically safe components, cannot fully cover all components, and the cost of such covering components is extremely high. Even if all components were replaced, the automation would lose its cost-effectiveness. Therefore, in some implementation methods, such as... Figure 9 and 10 As shown, the electrical processing unit 300 independently encapsulates high-risk electrical components such as custom-made weldments and heating modules into a high-voltage module 320, which is connected to the main unit 100 via pipelines. The main unit 100 only retains some low-risk sensors and other low-voltage electrical components, which can significantly reduce safety risks. In some embodiments, such as... Figure 11-13As shown, the main unit 100 of the cleaning equipment also includes an electrical control module 160 and a positive pressure exhaust system. At least some low-voltage components are integrated into the electrical control module 160, and at least some low-voltage components are located within the positive pressure exhaust zone formed by the positive pressure exhaust system. The cleaning module 130 typically employs an automated mechanism driven by compressed air. Some low-risk low-voltage components, such as solenoid valves, actuators, and position sensors, can be integrated into the customized electrical control module 160 according to functional module partitions. They can be connected to the corresponding actuators via quick-connect cables. For electrical components that cannot be encapsulated in the electrical control module 160, the positive pressure exhaust system can use compressed air to forcefully exhaust them, ensuring that the concentration of flammable and explosive gases in the surrounding area does not reach the explosion zone, further reducing safety risks. It should be noted that the isolation of low-voltage 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. This is suitable for cleaning agents with a high lower explosive limit. If the product requires a cleaning agent with a lower explosive limit, the corresponding low-voltage components can be replaced with cost-safe standard parts, which can be adapted to the explosion-proof certification rules of all regions.

[0131] In related technologies, the recycling of water-based cleaning agents after 3D printing typically involves two methods. One is reverse osmosis membrane filtration, which is costly, inefficient, and has a short filter lifespan, failing to meet the demands of automated production. The other method combines photopolymerization with filter filtration. However, this method still results in a cleaning agent containing a certain amount of resinous materials (approximately 1%), leading to poor cleaning ability. Furthermore, the photosensitive resin in the waste liquid cannot solidify below a certain concentration, making the waste liquid unrecyclable. Therefore, these technologies cannot achieve the recycling of water-based cleaning agents with low concentrations of uncured photosensitive resin during the post-3D printing processing.

[0132] Based on this, this application embodiment 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 equipment. The cleaning agent recovery method specifically includes the following steps.

[0133] S1. Photocuring treatment.

[0134] Cleaning agents containing resin impurities undergo photocuring. During the photocuring process, adsorbent filter materials are used to increase the local concentration of resin impurities in the cleaning agent, and the cleaning agent is then subjected to primary filtration through the adsorbent filter materials. The photocuring process involves emitting light of a specific wavelength toward the cleaning agent containing uncured photosensitive resin material. Under the irradiation of this specific wavelength of light, the photosensitive resin material in the cleaning agent solidifies and precipitates out as a solid resin material.

[0135] The cleaning agent recovery method proposed in this invention targets a water-based cleaning agent used for cleaning 3D printed parts. The water-based cleaning agent effectively removes residual uncured photosensitive resin material adhering to the photocured 3D printed parts. The water-based cleaning solution primarily utilizes the lipophilic groups in the surfactant to separate the residual uncured resin adhering to the surface of the printed part from the part, forming dispersed micelles in the water. The cleaning agent after this cleaning method contains a certain amount of uncured resin, which, when exposed to ultraviolet or visible light, undergoes photocuring and precipitates from the water-based cleaning agent.

[0136] While some related technologies exist that use photocuring to solidify the resin in cleaning agents before it precipitates out, this method fails when the concentration of uncured photosensitive resin in the waste liquid falls below a certain level. For example, if the concentration of uncured resin in the cleaning agent is very low, the cleaning agent cannot be recycled through photocuring. Conversely, even if the concentration of uncured resin in the cleaning agent is high, as the photocuring process progresses, the resin continuously solidifies and precipitates out, gradually reducing the concentration of uncured resin in the cleaning agent. Ultimately, some resin will remain in the cleaning agent, which cannot be precipitated out through photocuring.

[0137] Based on this, in the above embodiments, by setting up an adsorbent filter material, low-concentration uncured resin is agglomerated, thereby increasing the local resin concentration and maximizing its efficiency in being cured and precipitated by light. Specifically, the adsorbent filter material has well-developed pores, giving it a large specific surface area, with a surface area of ​​500-0 m² per gram of material, thus exhibiting excellent adsorption characteristics. Based on the different forces between the molecules of the adsorbent filter material and the resin molecules during the adsorption process, the adsorption process can be divided into physical adsorption and chemical adsorption. During adsorption, when the force between the adsorbent filter material and the resin molecules is van der Waals force (or electrostatic attraction), it is called physical adsorption; when the force is a chemical bond, it is called chemical adsorption. The adsorption intensity of physical adsorption is mainly related to the physical properties of the adsorbent filter material and is basically unrelated to its chemical properties. Because van der Waals forces are relatively weak, they have little impact on the structure of resin molecules. This force is similar to intermolecular cohesive forces, so this type of physical adsorption phenomenon can be compared to a cohesion phenomenon. During physical adsorption, the chemical properties of the resin remain unchanged. During the process of cleaning agents containing uncured resin flowing through adsorbent filter materials, a strong physical adsorption reaction occurs between the uncured resin and the adsorbent filter material, causing the flow rate to decrease or stop within the adsorbent filter material. Water-based cleaning agents, on the other hand, have no physical adsorption reaction with the adsorbent filter material, or the physical adsorption reaction between the two is very weak, resulting in a faster flow rate of the water-based cleaning agent within the adsorbent filter material. It is precisely because of this physical adsorption phenomenon of the adsorbent filter material that the concentration of uncured resin in the cleaning agent increases, thereby effectively curing and precipitating this enriched uncured resin during the photocuring process.

[0138] It can be seen that whether the concentration of uncured resin in the cleaning agent is already very low, or the concentration of uncured resin in the cleaning agent gradually decreases as the photocuring process progresses, the adsorption filter material in the above embodiments can be used to enrich the uncured resin in the cleaning agent, increase the local resin concentration, and then cure and precipitate it through photocuring.

[0139] In addition to increasing the local concentration of resin impurities in the cleaning agent, the adsorption filter material can also perform primary filtration of the cleaning agent, that is, filter the cured resin precipitated after photocuring through the adsorption filter material.

[0140] Technicians have discovered through research that the wastewater from cleaning agents, after photocuring treatment according to the above-described embodiments, can precipitate a large amount of solid impurities. Specifically, when the initial cleaning agent contains 5% resin impurities, after photocuring without an adsorbent filter material, the uncured resin impurity content in the resulting cleaning agent is typically around 3%. However, after photocuring with an adsorbent filter material as described in the above embodiments, the uncured resin impurity content in the resulting cleaning agent can typically be reduced to below 1%, making it suitable for cleaning agents with low resin concentrations. Furthermore, after sedimentation treatment, the resin impurity content in the resulting cleaning agent can typically be below 0.1%, with the main components being only water and cleaning additives. This allows for conventional cleaning applications, significantly reducing discharge and treatment costs. If the cleaning additives used are non-toxic substances, the resulting cleaning agent can also be discharged as domestic wastewater.

[0141] In some embodiments, the adsorbent filter material includes, but is not limited to, at least one of activated carbon particles, medium- to high-density sponges, and activated carbon cotton.

[0142] The preferred particle size range for activated carbon is 0.5-5mm, primarily for highly absorbent materials. Activated carbon is a black solid substance with a carbon skeleton structure, formed through gasification (carbonization, activation) to create well-developed pores. Its extensive pores give it a large specific surface area, ranging from 500 to 0 m² per gram, resulting in excellent adsorption properties. The true specific gravity of activated carbon is 1.9 to 2.1. It should be noted that the adsorption capacity of activated carbon is related to temperature and water quality. Higher water temperatures result in stronger adsorption capacity. However, if the water temperature exceeds 30℃, the adsorption capacity reaches its limit and may gradually decrease. When the water is acidic, the adsorption capacity of activated carbon for anions is relatively weakened; when the water is alkaline, its adsorption capacity for cations is weakened. Therefore, unstable fluid temperature and pH levels can also affect the adsorption capacity of activated carbon, requiring control of the temperature and pH of the cleaning agent during use.

[0143] Among them, medium- and high-density sponges are mainly for materials with general water absorption rates. Medium- and high-density sponges have many and full pores, exhibiting excellent adsorption properties. It should be noted that the medium- and high-density sponges referred to in the embodiments of this application are sponges with a density of 18 grams per cubic meter or more.

[0144] Activated carbon cotton is primarily designed for materials with low water absorption. Activated carbon cotton refers to a product where activated carbon is bonded to a non-adhesive cotton filter substrate using a polymer binder. Its main component is carbon, containing small amounts of hydrogen, oxygen, and nitrogen groups. Its specific surface area can reach 1000-1600 m² / g, and its micropore volume accounts for approximately 80% of the total pore volume.

[0145] Furthermore, adsorption filter materials can be combined in various ways, such as activated carbon granules, medium- and high-density sponges, and activated carbon cotton. For example, activated carbon granules can be sandwiched within medium- and high-density sponges, or medium- and high-density sponges can be alternately layered with activated carbon cotton. The combined use of multiple adsorption filter materials allows for complementary advantages among different materials, thereby enhancing the adsorption effect.

[0146] In some embodiments, the cleaning agent is stirred during the photocuring process. This stirring agitates the cleaning agent liquid, allowing the cleaning agent containing a small amount of residual resin to pass through the intricate capillary pores of the adsorbent filter material, achieving maximum separation. S2, Conventional Filtration. As seen in step S1, in addition to increasing the local concentration of resin impurities in the cleaning agent, the adsorbent filter material also performs primary filtration, removing at least a portion of the cured resin precipitated during the photocuring process. The primary purpose of the adsorbent filter material is to increase the local concentration of uncured resin in the cleaning agent through adsorption. Although it also functions as a filter, the pore size of the adsorbent filter material cannot be controlled to an extremely low level. Typically, primary filtration can remove 80%-90% of the cured resin, but some low-particle-size cured resin remains. When it is necessary to remove this portion of low-particle-size cured resin, further filtration using conventional filtration as described in this step is required. It should be noted that step S2 is a supplement to the primary filtration in step S1. If the filtration effect in step S1 is good or the requirements for filtration indicators are not high, step S2 may not be implemented. That is, step S2 is not a necessary step in the cleaning agent recovery method. Those skilled in the art can choose whether to implement step S2 as needed.

[0147] In optional embodiments, conventional filtration includes secondary filtration of the cleaning agent after primary filtration, wherein the filtration precision of the secondary filtration is less than that of the primary filtration. In this application, filtration precision refers to the pore size of the filter element, which can be understood as the maximum particle size allowed to pass through the filter media when the cleaning agent passes through it. Preferably, the cleaning agent after secondary filtration may also undergo tertiary filtration, where the filtration precision of the tertiary filtration is less than that of the secondary filtration. Of course, if necessary, further stages of filtration may be employed as needed.

[0148] The specific filtration method for conventional filtration is not limited. Filter membranes or filter cotton can be used to filter out large molecules in the cleaning agent, removing color powders and components with relatively large molecular weights, especially residual resins and other organic matter. Specifically, the filtration material is selected from at least one of the following: ultra-permeable membranes, nano-permeable membranes, selectively permeable membranes, polyester fiber filter cotton, synthetic fiber filter cotton, glass fiber filter cotton, activated carbon filter cotton, and sponge.

[0149] S3. Settlement treatment.

[0150] The cleaning agent is subjected to a sedimentation process, which causes impurities with a specific gravity greater than the cleaning agent to settle at the bottom of the cleaning agent, while impurities with a specific gravity less than the cleaning agent float to the top of the cleaning agent. The cleaning agent in the middle layer is then recovered.

[0151] Resin-based cleaning wastewater typically contains fillers such as color pastes, matting agents, and silica fumes. These substances are usually inorganic particles with a diameter of 1-100 nm or water-insoluble compounds. During the recycling process, they cannot be directly precipitated through photocuring. Furthermore, physical filtration is costly, inefficient, and has a short filter life. The accumulated content of these substances will affect the secondary cleaning effect of the cleaning agent. The sedimentation treatment in this step can largely solve the problems of cleaning wastewater recycling efficiency and quality.

[0152] Specifically, the cleaning agent is introduced into a customized settling tank 430. Physical stratification is achieved by the difference in specific gravity between impurities and the cleaning agent. Assuming the specific gravity of the cleaning agent is 1, in the settling tank 430, particles with a specific gravity greater than 1 will sink to the bottom, while lipids with a specific gravity less than 1 will float to the surface. The middle layer of cleaning agent can then be separated and recycled.

[0153] In some embodiments, the cleaning agent is heated during the sedimentation process. On the one hand, heating accelerates solvent stratification in the sedimentation tank 430, improving the recovery efficiency of the cleaning agent. On the other hand, the increased temperature of the cleaning agent can increase the saponification and emulsification reaction rate, reduce surface tension, and increase the solubility of the resin for alkaline inorganic compounds, emulsifiers, etc., thereby increasing the concentration of alkaline inorganic compounds, emulsifiers, etc., further increasing the saponification and emulsification reaction rate. High temperature can also reduce the viscosity of the resin, 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.

[0154] S4, powerful filtration.

[0155] Typically, the recovered cleaning agent after step S3 can be reused to clean 3D printed components, achieving good cleaning results. After this second cleaning, the cleaning agent can be recycled through steps S1-S3, and this cycle can be repeated. However, over time, some difficult-to-remove impurities will accumulate in the cleaning agent. When high demands are placed on the cleaning agent's performance, the cleaning agent after steps S1-S3 is insufficient, necessitating further processing with the high-efficiency filtration described in step S4.

[0156] Specifically, after the settling treatment of the cleaning agent, the recovered cleaning agent in the middle layer is passed into a bag filter 460 for intensive filtration. The cleaning agent flows in from the top of the filter bag of the bag filter 460, flowing from the inner surface of the filter bag to the outer surface, and the filtered particulate impurities are trapped inside the filter bag. The filter bag preferably uses highly effective adsorption powders such as activated carbon or diatomaceous earth, combined with the static pressure generated by the height difference, to perform microporous permeation filtration. This can remove most impurities that are insoluble in water, and the filtration efficiency can be improved by appropriately increasing the liquid level and creating a pressure difference.

[0157] It should be noted that step S4 is a supplement to the photocuring and settling treatments. If the cleaning agent after the treatment of steps S1-S3 meets the usage conditions, step S4 may not be performed. That is, step S4 is not a necessary step in the cleaning agent recovery method. Technicians in the field may choose whether to perform step S4 as needed.

[0158] The cleaning agent recovery module 400 in the cleaning equipment of this application embodiment is shown in the attached document. Figure 16-20 As shown, the cleaning agent recovery module 400 includes a curing tank 410, a light irradiation module 420, and a settling tank 430. The curing tank 410 is provided with an adsorbent filter material 411, which is configured to increase the local concentration of resin impurities in the cleaning agent and perform primary filtration of the cleaning agent. The light irradiation module 420 is configured to irradiate the cleaning agent in the curing tank 410 to cause the photosensitive resin in the cleaning agent in the curing tank 410 to solidify and precipitate. The settling tank 430 is configured to perform settling treatment on the filtered cleaning agent.

[0159] The illumination module 420, curing tank 410, and settling tank 430 are arranged sequentially from top to bottom so that the cleaning agent flowing out of the curing tank 410 can flow into the settling 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 determined according to the specific object to be cleaned.

[0160] As an optional implementation method, such as Figure 17-18 As shown, the illumination module 420 includes an air duct housing 421 for forming an air duct, a heat sink 422 and a light source 423 disposed within the air duct housing 421. The light source 423 emits ultraviolet or visible light, with the light emission direction facing the curing tank 410 below. The air duct housing 421 is provided with an air inlet 424 and an air outlet 425. Driven by a fan, airflow can enter the air duct housing 421 through the air inlet 424, flow through the heat sink 422, and exit from the air outlet 425. The heat sink 422 and the air duct are used to dissipate heat from the light source 423. The top of the curing tank 410 is open so that the light emitted by the light source 423 of the illumination module 420 can illuminate the interior of the curing tank 410.

[0161] As an optional implementation method, such as Figure 18-20 As shown, the settling tank 430 includes a chamber 431. An oil baffle 432 and a flow barrier 433 are installed inside the chamber 431. The oil baffle 432 divides the internal space of the settling tank 430 into multiple settling chambers. A flow channel 434 is provided at the lower end of the oil baffle 432, and an overflow channel 435 is provided above the flow barrier 433. The overflow channel 435 is higher than the flow channel 434. The oil baffle 432 and the flow barrier 433 are arranged in a one-to-one correspondence. The oil baffle 432 and the flow barrier 433 can be configured as a single set or multiple sets, for example... Figure 19 As shown, a set of oil baffle 432 and flow deflector 433 is provided. The oil baffle 432 divides the internal space of the settling tank 430 into a first settling chamber 4361 and a second settling chamber 4362. (Further details omitted) Figure 20 As shown, two sets of oil baffles 432 and flow deflectors 433 are provided. The two oil baffles 432 divide the internal space of the settling tank 430 into a first settling chamber 4361, a second settling chamber 4362, and a third settling chamber 4363 arranged sequentially. It should be noted that the overflow channel 434 can be a hollow structure on the oil baffle 432, or a channel formed between the lower end of the oil baffle 432 and the bottom surface of the chamber 431. The overflow channel 435 can be a hollow structure on the flow deflector 433, or a channel between the flow deflector 433 and the top surface of the chamber 431.

[0162] The working process and principle of sedimentation tank 430, Figure 20Taking this as an example, the cleaning agent first enters the first settling chamber 4361. In the first settling chamber 4361, particles with a specific gravity greater than the cleaning agent sink to the bottom, while lipids with a specific gravity less than the cleaning agent float to the surface. The baffle plate 432 between the first settling chamber 4361 and the second settling chamber 4362 is higher than the liquid surface, preventing the lipids in the upper layer of the first settling chamber 4361 from entering the second settling chamber 4362. The cleaning agent in the middle layer can pass through the layer below the baffle plate 432. The flow channel 434 leads into the second settling chamber 4362. The portion of the baffle plate 433 facing the flow channel 434 is a solid structure. The cleaning agent entering the second settling chamber 4362 will carry some heavy particles from the lower layer. Due to their high density, these particles will settle in front of the baffle plate 433 after being blocked by it. The cleaning agent will then slowly rise along with the baffle plate 433 and eventually overflow through the overflow channel 435. Similarly, in the second settling chamber 4362... In chamber 362, particles heavier than the cleaning agent sink to the bottom, while lipids lighter than the cleaning agent float to the surface. The baffle plate 432 between the second and third settling chambers 4362 is higher than the liquid surface, preventing the lipids in the upper layer of the second settling chamber 4362 from entering the third settling chamber 4363. The cleaning agent in the middle layer can enter the third settling chamber 4363 through the flow channel 434 below the baffle plate 432. The cleaning agent entering the second settling chamber 4362... After some particles entrained in the cleaning agent are blocked by the baffle plate 433, the cleaning agent settles in front of the baffle plate 433 and slowly rises with the baffle plate 433, eventually overflowing through the overflow channel 435. In the first settling chamber 4361, most of the high-density particles and low-density lipids can be separated. The particles and lipids separated in the second settling chamber 4362 and the third settling chamber 4363 become less and less. The cleaning agent in the middle layer of the third settling chamber 4363 can be recovered. It should be noted that if almost no lipid substances can be separated in the last settling chamber, an overflow port or overflow weir can be opened at the liquid surface to directly recover the cleaning agent through overflow. Alternatively, a water outlet baffle 438, similar to an oil baffle 432, can be set up to further block lipid substances in the third settling chamber 4363 before setting an overflow port or overflow weir to recover the cleaning agent. If a certain amount of lipid substances can still be separated in the last settling chamber, a pipeline can be directly inserted into the cleaning agent in the middle layer, and the cleaning agent can be sucked up and recovered by a suction pump.

[0163] In alternative implementations, such as Figure 19 and 20As shown, a heating module 437 is also provided inside the settling tank 430. The heating module 437 is preferably located in the last stage settling chamber to heat the cleaning agent. Heating can accelerate the stratification of the liquid in the settling tank 430, improve the recovery efficiency of the cleaning agent, and at the same time, the increased temperature of the cleaning agent can increase the saponification and emulsification reaction rate, reduce surface tension, and 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.

[0164] In an optional embodiment, the cleaning agent recovery module 400 further 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 that of the primary filtration. The secondary filtration module 440 is preferably located between the solidification tank 410 and the settling 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 further includes a three-stage filtration module 450, which is configured to perform a third-stage filtration on the cleaning agent after the second-stage filtration. The filtration accuracy of the third-stage filtration is less than that of the second-stage filtration. The three-stage filtration module 450 is preferably located in the sedimentation tank 430, specifically in the upper part of the first sedimentation chamber 4361, so that the cleaning agent flowing out of the second-stage filtration module 440 can flow into the three-stage filtration module 450 by gravity, and the cleaning agent in the three-stage filtration module 450 can flow into the first sedimentation chamber 4361 by gravity.

[0165] In alternative implementations, such as Figure 16 and 20 As shown, the cleaning agent recovery module 400 also includes a bag filter 460, which is configured to effectively filter the cleaning agent after sedimentation. The inlet of the bag filter 460 is connected to the outlet of the sedimentation tank 430. The cleaning agent flowing out of the outlet of the bag filter 460 can be pumped back into the sedimentation tank 430 for backup by the diaphragm pump 470, or it can be pumped to the cleaning chamber 132 for direct use by the diaphragm pump 470.

[0166] 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 embodiments. For details, please refer to the above embodiments, which will not be repeated here.

[0167] The following describes in further detail the technical effects of the cleaning agent recovery method and the cleaning agent recovery module 400 of this application, with reference to experimental examples.

[0168] Experiment 1 (Cleaning ability test of the recycled cleaning agent)

[0169] Structural parts were 3D printed using HegTech's Model HP 2.0Gray photosensitive resin (mainly acrylic resin) via photopolymerization using HegTech's UltraCraft A2D equipment. These parts were then used as the objects for cleaning. Different cleaning levels were determined based on the final cleaning effect.

[0170] Cleaning level 4 indicates that the surface is very clean, with no shine, the sample is not sticky, and there is no resin residue in the details, dents, and pipes.

[0171] Cleaning grade 3 indicates 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.

[0172] Cleaning level 2 indicates that most of the resin on the outer surface has been removed, the surface is sticky, and there is a lot of resin residue in the details;

[0173] Cleaning grade 1 means that it can remove a thick layer of resin buildup on the top of the foot, leaving a thinner layer of resin on the surface, with a large amount of resin remaining in the details;

[0174] A cleaning rating of 0 indicates no significant cleaning effect and that the resin cannot be effectively removed.

[0175] In this embodiment, water-based cleaning agent A was selected to clean several printed parts. The resin content in the cleaning agent after cleaning was approximately 3%. The cleaning agent after cleaning was then treated as follows:

[0176] (1) The cleaning agent B was recovered by sequentially performing the light curing treatment and sedimentation treatment in the embodiments of this application;

[0177] (2) The cleaning agent C is recovered by sequentially using the photocuring treatment and the high-efficiency filtration of the bag filter 460 in the embodiments of this application;

[0178] (3) Directly use light curing treatment, without using adsorbable filter materials, and recycle cleaning agent D.

[0179] The printer components were ultrasonically cleaned for 3 minutes each using cleaning agents A, B, C, and D, respectively. After removal, they were cleaned with alcohol for 2 minutes, then dried with an air gun and cured. The resulting cleaning grades were 4, 3, 4, and 2, respectively.

[0180] It can be seen that the cleaning agent recovered by direct photocuring without using absorbable filter materials cannot meet the cleaning requirements of the application. The cleaning agent recovered by the method of the present application embodiment can meet the cleaning requirements of the application, and even nearly 100% restores the cleaning ability of the cleaning agent.

[0181] Experimental Example 1 (Verification of Cleaning Agent Recovery Rate and Precipitated Products)

[0182] Several printed parts were cleaned using water-based cleaning agent A. The resin content in the cleaning agent after cleaning was approximately 1%. The cleaning agent was then treated as follows: it was subjected to photocuring and sedimentation treatment as described in the embodiments of this application, and cleaning agent B was recovered and its weight was recorded. Cleaning agent B was then filtered using a bag filter 460 for high-efficiency filtration, and cleaning agent C was recovered and its weight was recorded. Cleaning agents B and C were simultaneously subjected to wastewater rating, and the results are shown in Table 3 below.

[0183] Table 3

[0184]

[0185] As can be seen from Table 3, the cleaning agent recovered using the method of this application embodiment has stable recovery efficiency and low loss.

[0186] In alternative implementations, such as Figure 2 and Figure 16 As shown, the cleaning agent recovery module 400 can be installed inside the cabinet 310 of the electrical processing unit 300, that is, both the high-voltage module 320 and the cleaning agent recovery module 400 are installed inside the cabinet 310, thereby simplifying the structural unit of the system. In order to achieve water and electricity separation, the high-voltage module 320 and the cleaning agent recovery module 400 are isolated by a partition 330.

[0187] This application also protects a cleaning method implemented using the cleaning equipment provided in this application. The cleaning equipment has multiple cleaning modules. The cleaning method includes: after cleaning the target object in one cleaning module, drying the cleaning agent on the target object, and then moving the target object to the next cleaning module for cleaning and drying, until all cleaning modules have completed cleaning and drying the target object. In multi-stage cleaning, after the previous stage of cleaning is completed, the cleaning agent on the target object can be dried first before entering the next stage of cleaning. This allows for multiple cleaning and drying processes, preventing the cleaning agent from the previous stage from contaminating the cleaning agent in the next stage, reducing the use of cleaning agent, and facilitating safe production management. When the cleaning equipment includes a solvent recovery module, the cleaning method also includes the cleaning agent recovery method described in the foregoing embodiments of this application. For example, the cleaning method may include: performing a photocuring treatment on the cleaning agent containing resin impurities; during the photocuring treatment, using an adsorbent filter material to increase the local concentration of resin impurities in the cleaning agent; and performing primary filtration of the cleaning agent through the adsorbent filter material; performing a sedimentation treatment on the cleaning agent, so that impurities with a specific gravity greater than the cleaning agent settle at the bottom of the cleaning agent, and impurities with a specific gravity less than the cleaning agent float at the top of the cleaning agent, and recovering the cleaning agent in the middle layer. Alternatively, the cleaning method may also include: after the sedimentation treatment step, passing the recovered cleaning agent in the middle layer into a bag filter for intensive filtration. Since this cleaning method is implemented based on the cleaning equipment in the embodiments of this application, the specific implementation of the cleaning method includes the specific content in the embodiments of the cleaning equipment of this application, and will not be repeated here. Since this cleaning method is implemented using the cleaning equipment provided in the embodiments of this application, its specific technical features and corresponding technical effects can be specifically described in the product implementation, and will not be repeated here.

[0188] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0189] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0190] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A cleaning module, characterized in that, include: The cleaning chamber is configured to store cleaning agents and clean the target object; The first lifting component is configured to move the target object in the vertical direction so that the target object enters or leaves the cleaning chamber, and has a cleaning position and a drying position during the vertical movement of the target object, wherein the drying position is higher than the cleaning position. A drying assembly is configured to disperse cleaning agent on the target object located at the drying position by airflow; the drying assembly includes a second drive member and a nozzle, the second drive member being configured to drive the nozzle to reciprocate in a horizontal direction, the nozzle being configured to spray airflow onto the target object; The target object is the printed document to be cleaned.

2. The cleaning module according to claim 1, characterized in that, The first lifting assembly includes a first driving member and a first pallet assembly, wherein the first driving member is configured to drive the first pallet assembly to reciprocate in the vertical direction.

3. The cleaning module according to claim 2, characterized in that, The first driving component includes a three-position five-way solenoid valve and a cylinder connected to each other; or The first driving component includes an intrinsically safe motor and a synchronous belt connected to each other; or The first drive unit includes an intrinsically safe motor and a lead screw assembly that are interconnected.

4. The cleaning module according to claim 2, characterized in that, The first pallet assembly includes a support portion and a first connecting portion. The support portion is used to directly support the target object, and the first connecting portion is used to connect the support portion to the moving part of the first drive member. The first lifting assembly also includes a first guide rail extending in a vertical direction, and the first connecting portion slides with the first guide rail.

5. The cleaning module according to claim 4, characterized in that, The supporting part is a frame structure with a hollow center.

6. The cleaning module according to claim 1, characterized in that, The drying assembly further includes a second connecting part and a horizontally extending second guide rail. The nozzle is connected to the movable part of the second drive member through the second connecting part, and the second connecting part slides with the second guide rail.

7. The cleaning module according to claim 2, characterized in that, The cleaning chamber includes a door, and a gap is formed at the edge of the door.

8. The cleaning module according to claim 7, characterized in that, The compartment door is an elastic door, which always tends to close the cleaning compartment under its own elastic force. The first pallet assembly includes a support part for directly supporting the target object. The support part is provided with rollers. The rotation axis of the rollers is parallel to the rotation axis of the elastic door, and the rollers protrude from the bottom surface of the support part.

9. The cleaning module according to claim 1, characterized in that, The bottom of the cleaning chamber is equipped with an ultrasonic generator and / or a liquid agitation device.

10. The cleaning module according to claim 9, characterized in that, The liquid disturbance device is a bubble generating device, a vortex generating device, a vibration device, or a stirring device.

11. The cleaning module according to claim 9, characterized in that, The bottom of the cleaning chamber is also equipped with a heat dissipation chamber.

12. A cleaning device, characterized in that, include: The main unit includes a frame, a loading / unloading module, and a cleaning module as described in any one of claims 1-11. The main unit is equipped with a pneumatically driven execution unit. The frame has multiple workstations. The loading / unloading module has at least one component and is configured to load or unload a target object. The cleaning module has several components 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 is configured to store cleaning agent for supplying the cleaning agent to each of the cleaning modules; as well as An electrical processing unit is configured to control the pneumatically driven actuator.

13. The cleaning equipment according to claim 12, characterized in that, It also includes a cleaning agent recovery module, which comprises: A curing tank is provided with an adsorbent filter material, which is configured to increase the local concentration of resin impurities in the cleaning agent and perform primary filtration of the cleaning agent. The light module is configured to illuminate the cleaning agent in the curing tank. The settling tank is configured to settle the filtered cleaning agent.

14. The cleaning equipment according to claim 12, characterized in that, Also includes: The organic solvent monitoring unit is configured to detect the concentration of organic solvents in the environment and to shut down and / or cut off the main power supply in case the concentration of organic solvents exceeds a safe threshold.

15. A cleaning method, implemented by the cleaning equipment according to any one of claims 12-14, wherein the cleaning equipment is provided with a plurality of cleaning modules, characterized in that, include: After a cleaning module finishes cleaning the target object, the cleaning agent on the target object is blown dry. Then the target object is moved to the next cleaning module for cleaning and drying, until all cleaning modules have completed cleaning and drying the target object.

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