CN116423838A

CN116423838A - Cleaning module, cleaning equipment and cleaning method

Info

Publication number: CN116423838A
Application number: CN202310243731.8A
Authority: CN
Inventors: 黄贤新; 焦学刚; 赖中武; 钟炯超
Original assignee: Guangzhou Heygears IMC Inc
Current assignee: Guangzhou Heygears IMC Inc
Priority date: 2023-03-13
Filing date: 2023-03-13
Publication date: 2023-07-14

Abstract

The application relates to the technical field of printing piece cleaning, in particular to a cleaning module, cleaning equipment and a cleaning method. The cleaning module comprises a cleaning bin, a first lifting assembly and a blow-drying assembly, wherein the cleaning bin is configured to store cleaning agent and clean a target object; the first lifting assembly enables the target object to enter or leave the cleaning bin and has a cleaning position and a drying position in the up-and-down movement process of the target object; the blow-dry assembly is configured to disperse a cleaning agent on a target located at a blow-dry location by an air flow. The cleaning bin and the drying assembly are integrated, the first lifting assembly drives the target object to finish cleaning at the cleaning position, and then drives the target object to be dried at the drying position to be dried by the drying assembly, so that automatic execution is realized, manual execution is not needed, and harm of the cleaning agent to a human body is reduced. During multi-stage cleaning, the cleaning agent of the previous stage is prevented from polluting the cleaning agent of the next stage, the use of the cleaning agent is reduced, and the safe production management is facilitated.

Description

Cleaning module, cleaning equipment and cleaning method

Technical Field

The application relates to the technical field of printing piece cleaning, in particular to a cleaning module, cleaning equipment and a cleaning method.

Background

At present, the application field of the photo-curing 3D printing technology is wider and wider, and particularly, the photo-curing technology has wide application in the fields of molds, customized commodities, medical jigs, dentistry, handholds, prostheses and the like due to high molding precision. The photo-curing 3D printing technology generally prints layer by layer in a layering and slicing manner when manufacturing a model, a photo-curing material between a printing reference plane and the model is cured to form a pattern curing layer, and the steps are repeated to form a printing structure accumulated by the pattern curing layer on a component platform, wherein the material accumulation molding is performed by utilizing the principle that photosensitive resin is cured after being irradiated by ultraviolet light.

After the 3D printing piece is printed, a lot of liquid resin is adhered to the surface of the 3D printing piece, and the 3D printing piece needs to be cleaned by a cleaning system. The removal process mainly comprises two working procedures of cleaning and blow-drying, the shape of a printing piece is generally complex, the cleaning difficulty is high, the contact time of a resin material and a cleaning agent is limited to a certain extent, the existing process usually needs to be manually executed, and part of application even needs to be manually point-to-point blow-dried through multiple cleaning and blow-drying; the physical friction treatment can remove all residual resin, the efficiency is low, the requirements on the skills and responsibility of operators are quite high, and related cleaning agents have certain harm to human bodies, so that the production management is not facilitated. The existing cleaning scheme mainly comprises two directions of soaking cleaning and spraying cleaning, wherein the spraying cleaning has strong manual dependency and low cleaning efficiency, and the soaking cleaning is mainly used in mass production enterprises. The soaking cleaning needs to consume a large amount of cleaning agents, the cleaning agents mainly adopt organic cleaning agents, and basically belong to inflammable and explosive objects, so that the cleaning agents are high in cost, large in pungent smell, harmful to human bodies, strong in volatility, inflammable and explosive in cleaning agents, dangerous in mass use or storage and potential safety hazard.

Therefore, developing a cleaning module integrating cleaning and drying functions and a cleaning method for reducing the use amount of cleaning agent are of great significance for safe cleaning.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides a cleaning module, cleaning equipment and a cleaning method, so as to solve the technical problems of low cleaning and drying efficiency, large consumption of cleaning agent and unfavorable safety production in the prior art.

In a first aspect, the present application provides a cleaning module comprising:

a cleaning bin configured to store a cleaning agent and clean a target object;

the first lifting assembly is configured to drive the target object to move in the up-and-down direction so as to enable the target object to enter or leave the cleaning bin, and the first lifting assembly is provided with a cleaning position and a drying position in the up-and-down movement process of the target object, wherein the drying position is higher than the cleaning position;

and the blow-drying assembly is configured to disperse the cleaning agent on the target object positioned at the blow-drying position through air flow.

In an alternative embodiment, the first lift assembly includes a first drive member and a first pallet assembly, the first drive member configured to drive the first pallet assembly to reciprocate in a vertical direction.

In an alternative embodiment, the first driver comprises a three-position five-way solenoid valve and a cylinder connected to each other.

In an alternative embodiment, the first drive member comprises an intrinsically safe motor and a synchronous belt which are interconnected.

In an alternative embodiment, the first drive member comprises an intrinsically safe motor and a lead screw assembly interconnected.

In an alternative embodiment, the first pallet assembly comprises a bearing part and a first connecting part, the bearing part is used for directly bearing the target object, the first connecting part is used for connecting the bearing part with the moving part of the first driving piece, the first lifting assembly further comprises a first guide rail extending in the vertical direction, and the first connecting part is in sliding fit with the first guide rail.

In an alternative embodiment, the bearing part is a frame structure with a hollowed-out middle part.

In an alternative embodiment, the blow-drying assembly includes a second driving member configured to drive the nozzle to reciprocate in a horizontal direction, and a nozzle configured to spray an air stream toward the target object.

In an alternative embodiment, the blow-drying assembly further comprises a second connecting portion and a second guide rail extending horizontally, the nozzle is connected with the movable portion of the second driving member through the second connecting portion, and the second connecting portion is in sliding fit with the second guide rail.

In an alternative embodiment, the cleaning bin includes a bin gate with a slit formed at an edge of the bin gate.

In an alternative embodiment, the bin gate is an elastic gate, the elastic gate always has a tendency of closing the cleaning bin under the action of self elastic force, the first supporting plate component comprises a bearing part for directly bearing the target object, the bearing part is provided with a roller, the rotation axis of the roller is parallel to the rotation axis of the elastic gate, and the roller protrudes out of the bottom surface of the bearing part.

In an alternative embodiment, the bottom of the washing compartment is provided with ultrasonic generating means and/or liquid disturbing means.

In alternative embodiments, the liquid perturbation device is a bubbling device, a vortex generating device, a shaking device, or a stirring device.

In an alternative embodiment, the bottom of the washing bin is also provided with a heat sink bin.

In an alternative embodiment, the cleaning module is provided in plurality.

In a second aspect, embodiments of the present application further provide a cleaning apparatus, including:

the main machine unit comprises a frame, a loading and unloading module and a cleaning module provided in the first aspect of the application, wherein a pneumatically driven execution unit is arranged in the main machine unit, and a plurality of stations are arranged on the frame; the feeding and discharging module is provided with at least one and is configured to feed or discharge a target object; the cleaning module is provided with a plurality of cleaning modules and is configured to clean the target object; the pneumatically driven execution unit is configured to perform a preset action on a target object;

A cleaning agent storage unit configured to store a cleaning agent for supplying the cleaning agent to each of the cleaning modules; and

an electrical processing unit configured to control the pneumatically driven execution unit.

In an alternative embodiment, the cleaning apparatus further comprises a cleaning agent recovery module comprising:

the solidification pool is internally provided with an adsorptive filter material, and the adsorptive filter material is configured to promote the local concentration of resin impurities in the cleaning agent and perform primary filtration on the cleaning agent;

the illumination module is configured to illuminate the cleaning agent in the curing pool;

and the sedimentation tank is configured to carry out sedimentation treatment on the filtered cleaning agent.

In an alternative embodiment, the cleaning apparatus further comprises:

and an organic solvent monitoring unit configured to detect the concentration of the organic solvent in the environment and shut down and/or cut off the total power supply if the concentration of the organic solvent exceeds a safety threshold. In a third aspect, an embodiment of the present application further provides a cleaning method, which is implemented by the cleaning apparatus provided in the second aspect of the embodiment of the present application, where the cleaning apparatus is provided with a plurality of cleaning modules, and the cleaning method includes: after one cleaning module cleans the target object, the cleaning agent carried on the target object is dried, and then the target object is conveyed to the next cleaning module for cleaning and drying until all the cleaning modules clean and dry the target object.

In the cleaning module, the cleaning equipment and the cleaning method provided by the embodiment of the application, the cleaning bin and the drying assembly are integrated together, the first lifting assembly drives the target object to be dried at the cleaning position after cleaning is completed, and then the target object is driven to be dried at the drying position by the drying assembly, so that automatic execution is realized, manual execution is not needed, and the harm of the cleaning agent to the human body is reduced. In addition, when the multistage cleaning is finished, the cleaning agent carried on the target object can be dried firstly after the previous stage cleaning is finished, and then enters the next stage cleaning station, so that the multistage cleaning device can realize repeated cleaning and drying, avoid the previous stage cleaning agent from polluting the next stage cleaning agent, reduce the use of the cleaning agent and be beneficial to safe production management.

Drawings

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

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is an exploded view of a cleaning module according to an embodiment of the present disclosure;

FIG. 2 is a longitudinal cross-sectional view of a cleaning module provided in an embodiment of the present application;

FIG. 3 is a cross-sectional view of a cleaning module provided in an embodiment of the present application;

fig. 4 is a schematic perspective view of a cleaning module according to an embodiment of the present application;

FIG. 5 is a schematic view of a tooth model part 3D printed;

fig. 6 is a schematic structural diagram of a first lifting assembly in a cleaning module according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a first lifting assembly cooperating with a cleaning basket in a cleaning module according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a cleaning basket according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a cleaning apparatus according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an electrical appliance processing unit according to an embodiment of the present application;

fig. 11 is an exploded view of a main unit in a cleaning apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a front side of a host unit in the cleaning apparatus according to the embodiment of the present application;

fig. 13 is a schematic structural diagram of a rear side of a host unit in the cleaning apparatus according to the embodiment of the present application;

fig. 14 is a schematic structural diagram of an upper and lower feeding module in the cleaning device according to the embodiment of the present application;

Fig. 15 is a schematic structural diagram of a handling module in a cleaning apparatus according to an embodiment of the present disclosure;

fig. 16 is a schematic diagram of a second structure of the electrical appliance processing unit according to the embodiment of the present application;

fig. 17 is a schematic structural diagram of a cleaning agent recovery module according to an embodiment of the present disclosure;

FIG. 18 is a cross-sectional block diagram of a cleaning agent recovery module provided in an embodiment of the present application;

FIG. 19 is a cross-sectional view of a settling pond of a cleaning agent recovery module provided in an embodiment of the present application;

FIG. 20 is a schematic diagram of another sedimentation tank in the cleaning agent recovery module provided in the embodiment of the present application; and

fig. 21 is a schematic diagram illustrating an operation principle of an organic solvent monitoring unit according to an embodiment of the present application.

Reference numerals:

100. a host unit;

110. a frame; 111. a feeding station; 112. a cleaning station; 113. a blanking station; 114. a second lifting assembly;

120. feeding and discharging modules;

130. a cleaning module; 1301. a first cleaning module; 1302. a second cleaning module; 1303. a third cleaning module;

131. a first lifting assembly; 1311. a first driving member; 1312. a first pallet assembly; 13121. a carrying part; 13122. a first connection portion; 13123. a roller; 1313. a first guide rail;

132. Cleaning a bin;

133. drying the assembly; 1331. a second driving member; 1332. a nozzle; 1333. a second connecting portion; 1334. a second guide rail;

134. a bin gate; 135. an ultrasonic generating device; 136. a liquid perturbation device; 137. a heat dissipation bin; 138. an outer frame;

140. a carrying module; 141. a fourth driving member; 142. mechanical clamping jaws;

150. a cleaning basket; 160. an electric box module; 170. a cleaning agent replenishing device;

200. a detergent storage unit;

300. an electric appliance processing unit; 310. a cabinet body; 320. a strong current module; 321. a main power supply; 330. a partition plate;

400. a cleaning agent recovery module;

410. a curing pool; 411. an adsorptive filter material; 420. an illumination module; 421. an air duct box body; 422. a heat sink; 423. a light source; 424. an air inlet; 425. an air outlet;

430. a sedimentation tank; 431. a bin body; 432. an oil baffle plate; 433. a spoiler; 434. a flow-through channel; 435. an overflow channel; 4361. a first sedimentation bin; 4362. a second sedimentation bin; 4363. a third sedimentation bin; 437. a heating module; 438. a water outlet baffle;

440. a second stage filter module; 450. a three-stage filtering module; 460. a cloth bag filter; 470. a diaphragm pump;

500. an organic solvent monitoring unit; 510. an independent power supply; 520. an organic solvent sensor; 530. a controller; 540. an emergency stop module; 550. a contactor; 560. and a relay.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The cleaning module 130 according to an embodiment of the present application is described below with reference to the accompanying drawings. As shown in fig. 1 to 4, the cleaning module 130 includes a cleaning bin 132, a first elevating assembly 131, and a blow-drying assembly 133, wherein the cleaning bin 132 is configured to store a cleaning agent and clean a target object; the first lifting assembly 131 is configured to drive the object to move up and down so that the object enters or leaves the cleaning bin 132, and has a cleaning position and a drying position during the up and down movement of the object, wherein the drying position is higher than the cleaning position; the blow-dry assembly 133 is configured to disperse the cleaning agent on the target object located at the blow-dry location by the air flow. The cleaning bin 132 of the cleaning module 130 is of a top opening structure, a cleaning space is formed in the cleaning bin 132, after the first lifting assembly 131 receives a target object, the target object is driven to move downwards, so that the target object enters a cleaning position in the cleaning bin 132 and is in a cleaning agent in the cleaning bin 132, after cleaning is completed, the first lifting assembly 131 ascends to drive the target object to leave the cleaning agent in the cleaning bin 132, and a drying position is reached.

In addition, the first lifting assembly 131 drives the object to have a receiving position higher than the drying position during the up-down movement of the object. Specifically, the first lifting assembly 131 can rise to a high-level receiving position, receives the object material directly above the cleaning bin 132, and drives the object material to fall to a low-level cleaning position, the cleaning position is located inside the cleaning bin 132, the object material is cleaned by the cleaning agent in the cleaning bin 132, after the cleaning is finished, the first lifting assembly 131 drives the object material to rise to a middle-level drying position, and the cleaning agent on the surface of the object material is dried by the drying assembly 133.

The cleaning module 130 in this embodiment is in the same place cleaning bin 132 and weathers the subassembly 133 integration, and first lifting assembly 131 drives the target object after the cleaning is accomplished to the cleaning position, drives the target object again and weathers the subassembly 133 by weathering to weathering the position, realizes automatic execution, can also realize that washing is weathered many times, need not to rely on manual execution, reduces the harm of cleaner to the human body, does benefit to safety in production management.

The target object driven by the first lifting component 131 can be the printing piece to be cleaned, or can be the printing piece to be cleaned and a container for loading the printing piece to be cleaned, so as to prevent the printing piece to be cleaned from being damaged due to direct action on the printing piece to be cleaned. The container is preferably a cleaning basket 150 as shown in fig. 8, which allows cleaning liquid to permeate the container to clean the print to be cleaned while carrying the print to be cleaned. Optionally, the cleaning basket 150 is formed by winding and welding stainless steel hollow capillaries and small-diameter wires, so that the quality of cleaning agents can be greatly reduced, the mesh spacing is increased, the cleaning basket is portable in carrying, low in cost and high in drying efficiency, and in addition, the auxiliary support is customized for the cleaning basket 150 to expand, the placing gesture of complex application can be limited, and the cleaning and drying efficiency and quality are improved. Specifically, the cleaning basket 150 can be formed by bending and winding stainless steel wires with the diameter of 4-8mm and matching stainless steel wires with the diameter of less than 1mm, the grid interval is made into a rectangle, the narrow-side interval is not more than 10mm, the small-sized printing piece is ensured to be unable to fall out, the long-side interval can be manufactured according to 30-60mm, and the cleaning agent is ensured to be blown dry to the greatest extent without obstruction. Compared with the basket on the market, the manufacturing cost can be reduced by 30%, the weight can be reduced by more than 50%, and the basket is more convenient to use. In addition, the stainless steel hollow tube is adopted for bending and welding, so that an auxiliary support capable of being inserted into the cleaning basket 150 can be made, a user can conveniently clean the nozzle 1332 with the focus cleaning and drying surface facing the drying assembly 133 when stacking printed pieces, and the cleaning efficiency and quality are improved.

In an alternative embodiment, as shown in fig. 1-4 and 6-7, the first lifting assembly 131 includes a first driver 1311 and a first pallet assembly 1312, the first driver 1311 being configured to drive the first pallet assembly 1312 to reciprocate in a vertical direction. The first pallet assembly 1312 is used for carrying a target object and driving the target object to rise or fall under the force of the first driving member 1311. The first driving member 1311 may be a three-position five-way electromagnetic valve and an air cylinder, which are connected with each other, the air cylinder extends along an up-down direction, two ends of the air cylinder are fixed on the cleaning module 130 through fixing members, the air cylinder is matched with an inductor through the three-position five-way electromagnetic valve, and the air cylinder can stay and lock at any position in a stroke in the up-down direction by utilizing a middle sealing function of the electromagnetic valve, so that the first pallet assembly 1312 and a target object on the first pallet assembly stay at a receiving position, a cleaning position or a drying position. The first pallet assembly 1312 includes a bearing portion 13121 and a first connecting portion 13122, where the bearing portion 13121 is used to directly bear a target, the first connecting portion 13122 is used to connect the bearing portion with a moving portion of the first driving member 1311, and in order to make the up-down movement process more stable, the first lifting assembly 131 further includes a first rail 1313 extending in a vertical direction, and the first connecting portion 13122 is slidably matched with the first rail 1313. The bearing portion 13121 is preferably a frame structure with a hollowed-out middle portion, so that the cleaning agent can pass through the frame structure, the cleaning effect is improved, and the residual cleaning agent can be conveniently discharged after the cleaning is completed. In addition, the first driving piece 1311 may be an intrinsic safety type motor and a synchronous belt that are connected with each other, the intrinsic safety type motor drives the synchronous belt to rotate, and the synchronous belt drives the first supporting plate assembly 1312 to reciprocate in the up-down direction; the first driving member 1311 may further be an intrinsic safety type motor and a screw assembly that are connected to each other, and the rotational motion of the intrinsic safety type motor is converted into linear motion of the screw assembly, and the screw assembly drives the first supporting plate assembly 1312 to reciprocate in the up-down direction.

In an alternative embodiment, as shown in FIGS. 1-3, the wash module 130 further includes an outer frame 138, the outer frame 138 being disposed about the exterior of the wash chamber 132. On the one hand, the outer frame 138 can play a certain role in protecting the cleaning bin 132 and the structure between the outer frame 138 and the cleaning bin 132, on the other hand, the outer frame 138 is used for realizing structural cooperation with the cleaning station 112, and each cleaning module 130 realizes standard butt joint with the cleaning station 112 through the outer frame 138, so that modularization of a physical structure is realized.

In an alternative embodiment, the blow-dry assembly 133 of the cleaning module 130 may be disposed directly in the cleaning bin 132, the blow-dry module being configured to disperse the cleaning agent on the target object by an air flow. Each cleaning module 130 is provided with a set of blow-drying components 133, for example, when three cleaning modules 130 respectively complete pre-cleaning, coarse cleaning and fine cleaning, after the cleaning bin 132 of the first cleaning module 1301 completes pre-cleaning, the target object is blown to the residual cleaning agent on the target object through the blow-drying components 133 on the first cleaning module 1301, and then enters the cleaning bin 132 of the second cleaning module 1302 to perform coarse cleaning, so that the pollution of the coarse cleaning organic cleaning agent in the cleaning bin 132 of the second module can be avoided, after the cleaning bin 132 of the second cleaning module 1302 completes coarse cleaning, the target object is blown to the residual cleaning agent on the target object through the blow-drying components 133 of the second cleaning module 1302, and then enters the cleaning bin 132 of the third cleaning module 1303 to perform cleaning, so that the pollution of the fine cleaning organic cleaning agent in the cleaning bin 132 of the third cleaning module 1303 can be avoided, namely, after the cleaning is completed once, the target object is blown to the next stage, the cleaning agent is prevented from being polluted by the cleaning agent in the cleaning bin 132 of the next stage module with the previous cleaning agent, so that the consumption of clean cleaning agent can be reduced. In addition, after the object finishes the fine cleaning in the cleaning bin 132 of the third cleaning module 1303, the cleaning agent remained on the object is dried by the drying component 133 of the third cleaning module 1303, and then the object is discharged, so that the pollution to the feeding and discharging module or other structures can be avoided.

In an alternative embodiment, as shown in fig. 1-4, the blow-drying assembly 133 includes a second driving member 1331 and a nozzle 1332, the nozzle 1332 being positioned above the cleaning bin 132, the second driving member 1331 being configured to drive the nozzle 1332 to reciprocate in a horizontal direction, the nozzle 1332 being configured to spray an air stream onto a target object. The second drive 1331 includes, but is not limited to, a cylinder, an intrinsically safe motor-driven synchronous belt, or an intrinsically safe motor-driven screw assembly. In the working process, the nozzle 1332 is driven by the second driving piece 1331 to reciprocate above the target object, the cleaning agent on the surface and in the target object is dispersed through the nozzle 1332 by using air flow, the dispersed cleaning agent has two states of gas phase and liquid phase, the gas phase cleaning agent can be pumped to the outside through an exhaust system of the equipment, and the liquid phase cleaning agent can be returned to the inside of the cleaning bin 132 through the drainage of the side wall of the bin body 431 of the cleaning bin 132. The air flow used for dispersing the residual cleaning agent can be compressed air generated by an air compressor, and also can be air flow generated by an ion fan or a safety fan, and the use of the ion fan and the safety fan can reduce the limitation of equipment on low field requirements.

Specifically, the blow-drying assembly 133 further includes a second connecting portion 1333, the second driving member 1331 is fixed on the outer wall of the cleaning bin 132, the nozzle 1332 is connected with the movable portion of the second driving member 1331 through the second connecting portion 1333, and in order to make the movement process more stable, the blow-drying assembly 133 further includes a second guide rail 1334 extending in the horizontal direction, and the second connecting portion 1333 is slidably matched with the second guide rail 1334.

Various cleaning agents can be stored in the cleaning bin 132 of the cleaning module 130 according to the need, and as the 3D printing part is generally complex in shape, the resin material is generally a high-viscosity mixed organic material, the cleaning difficulty is relatively high, and the conventional cleaning scheme mainly comprises soaking cleaning. The cleaning agent in the cleaning bin 132 is generally classified into an organic cleaning agent (such as alcohol, IPA, ethyl acetate, etc.) and a water-based cleaning agent (such as alkaline cleaning agent, emulsifier, etc.), wherein the water-based cleaning agent has low cleaning efficiency, and is generally mainly cleaned by the organic cleaning agent in mass production. This makes it necessary to use a large amount of organic cleaning agent in the cleaning process, and such cleaning agent is basically inflammable and explosive, and has high cost, strong pungent smell, harm to human body, strong volatility of cleaning agent, inflammability and explosiveness, danger in mass use or storage, and potential safety hazard, and serious accident will be caused by a little carelessness, so it is necessary to develop a safety cleaning module 130 for reducing the usage amount of organic cleaning agent. Based on this, in some embodiments of the present application, the cleaning module 130 may be used in combination, for example, the cleaning module 130 includes a first cleaning module 1301, a second cleaning module 1302, and a third cleaning module 1303, wherein the cleaning bin 132 of the first cleaning module 1301 is used to store a water-based cleaning agent, the cleaning bin 132 of the second cleaning module 1302 is used to store a coarse cleaning organic cleaning agent, and the cleaning bin 132 of the third cleaning module 1303 is used to store a fine cleaning organic cleaning agent.

In the working process of the cleaning module 130 in the above embodiment, the first lifting component 131 of the first cleaning module 1301 conveys the target object into the cleaning bin 132 of the first cleaning module 1301, and performs pre-cleaning by using the water-based cleaning agent; then the first lifting assembly 131 of the second cleaning module 1302 conveys the target object into the cleaning bin 132 of the second cleaning module 1302, and performs rough cleaning by rough cleaning organic cleaning agent; then, the first lifting assembly 131 of the third cleaning module 1303 conveys the target object into the cleaning bin 132 of the third cleaning module 1303, and performs a fine cleaning by a fine cleaning organic cleaning agent. The cleaning device is provided with three cleaning modules 130, wherein the first cleaning module 1301 adopts a water-based cleaning agent for cleaning, the water-based cleaning agent can utilize an alkaline inorganic compound as a main raw material of the cleaning agent, the alkaline inorganic compound and esters in the 3D printing material can be subjected to saponification reaction, alcohol and carboxylate can be generated and dissolved in water, the purpose of cleaning is achieved, the subsequent use of an organic cleaning agent can be reduced through the pre-cleaning of the water-based cleaning agent in the first cleaning module 1301, the cost is reduced, the irritation of the cleaning agent is reduced, the use of flammable and explosive raw materials is avoided, and the operation safety of the cleaning process is improved. Optionally, the water-based cleaning agent comprises the following components in parts by mass: 80 to 99.5 percent of water, 0.5 to 20 percent of alkaline inorganic compound, 0 to 19.5 percent of surfactant, 0 to 1 percent of emulsifier and 0 to 1 percent of defoamer. The alkaline inorganic compound and the ester are utilized to carry out saponification reaction, and meanwhile, the surfactant and the emulsifier in the formula of the base cleaning agent can also play roles in dissolution, emulsification and dispersion, so that the surface tension is reduced, most of resin on the surface of a member to be cleaned is removed, and the cleaning effect is improved. In addition, the alkaline inorganic compound and the ester are utilized to carry out saponification reaction, and meanwhile, the surfactant and the emulsifier in the formula of the base cleaning agent can also play roles in dissolution, emulsification and dispersion, so that the surface tension is reduced, most of resin on the surface of a printed part is removed, and the cleaning effect is improved.

The third cleaning module 1303 uses a newly purchased organic cleaning agent to perform fine cleaning, the second cleaning module 1302 uses a recovered organic cleaning agent in the third cleaning module 1303 to perform coarse cleaning, so that the printing element to be cleaned is cleaned in batches, the cleaning effect of the printing element to be cleaned can be improved by cleaning with the organic cleaning agent twice, and since the coarse cleaning organic cleaning agent in the second cleaning module 1302 is recovered from the third cleaning module 1303, the total amount of the organic cleaning agent finally consumed is only measured by the consumption of the third cleaning module 1303, the consumption amount of the organic cleaning agent can be reduced, thereby reducing the capacity of the organic cleaning agent to be stored in the cleaning agent storage module and reducing the safety risk. Alternatively, a valve may be disposed at the bottom of the cleaning module 130 and connected to an external collection bin through a pipe, and when the cleaning agent in the cleaning bin 132 fails, the valve at the bottom of the cleaning module 130 is opened, and the failed cleaning agent is discharged to the external collection bin through the pipe by gravity pressure difference.

In order to verify that the cleaning module 130 in the above embodiment is used in combination with the consumption of the organic cleaning agent, the tooth model parts shown in fig. 5 are used for cleaning test, each batch of cleaning is performed by 20PCS, the consumption of the organic cleaning agent for cleaning each tooth model part is calculated until the surface is clean, and the consumption of the cleaning agent in different schemes is compared. The single-bin cleaning is to use only one cleaning module 130 containing organic cleaning agent to clean the parts, and the three-bin cleaning is to use the first cleaning module 1301, the second cleaning module 1302 and the third cleaning module 1303 in the above embodiment to perform continuous cleaning, where the organic cleaning agent is alcohol, and the water-based cleaning agent includes water and alkaline inorganic compound. By using the basic inorganic compound as the main raw material of the cleaning agent, the basic inorganic compound and the ester can be subjected to saponification reaction to generate alcohol and carboxylate which are soluble in water, so that the cleaning purpose is achieved, and the test results are shown in table 1:

TABLE 1

As can be seen from the above results, in the three-bin cleaning scheme of the present embodiment, the residual alcohol after cleaning by the third cleaning module 1303 can be used for rough cleaning of the second cleaning module 1302, so that only the consumption of the third cleaning module 1303 needs to be calculated, and therefore the cleaning amount of the organic cleaning agent with the same volume can be 2.65 times that of the organic cleaning agent with the same volume, and the consumption of the organic cleaning agent can be greatly reduced.

In an alternative embodiment, as shown in FIGS. 1-4, the cleaning bins 132 of the cleaning module 130 each include a bin gate 134 with a slit formed at an edge of the bin gate 134, the slit typically having a width of 1-3mm. The bin gate 134 is mainly used for realizing the isolation effect of the cleaning agent in the cleaning bin 132 and the blow-drying assembly 133, and is used for reducing the volatilization amount of the cleaning agent, prolonging the service life of the cleaning agent and reducing the safety risk. The second driving piece 1331 drives the nozzle 1332 to move back and forth above the target object, the air flow is used for dispersing the cleaning agent on the surface and in the target object through the nozzle 1332, the liquid phase part of the dispersed cleaning agent is drained through the side wall of the bin body 431 of the cleaning bin 132 and can be accumulated above the bin gate 134, most of the cleaning agent flows back into the cleaning bin 132 through a gap at the edge of the bin gate 134, and a small part of the cleaning agent can remain in the gap, so that the effect of preventing the volatilization of the cleaning agent in the interior can be realized.

The cleaning effect of the technician on the tooth model print of fig. 5 for the cleaning module 130 with the guard against the bin gate 134 and the cleaning module 130 without the guard against the bin gate 134 is compared and the specific test results are shown in table 2 below.

TABLE 2

From the results in table 2, it can be seen that the same volume of organic cleaning agent can achieve a 3.51-fold benefit in cleaning capacity with the cleaning apparatus of the examples of the present application. The organic cleaning agent which means that the equipment needs to store every day is reduced by 2/3, and the safety risk of the organic cleaning agent is greatly reduced.

Specifically, the bin gate 134 may be selected to be a flexible gate that has a tendency to close the cleaning bin 132 under its own elastic force. For example, after the first pallet assembly 1312 is driven by the three-position five-way electromagnetic valve control cylinder to be lifted to the highest receiving position, the first pallet assembly 1312 receives the incoming material object, then moves downwards, the bottom of the first pallet assembly 1312 can overcome the elastic force to push up the elastic door of the cleaning bin 132, the object is placed in the cleaning position inside the cleaning agent, the cleaning agent cleans the object, after cleaning is completed, the first pallet assembly 1312 and the object are driven by the three-position five-way electromagnetic valve control cylinder to be lifted to the middle blow-dry position, after the first pallet assembly 1312 leaves the elastic door position, the elastic door is closed under the action of the elastic force, and the cleaning agent in the cleaning bin 132 is isolated from the object. Alternatively, the bin gate 134 may be selected as an electrically or pneumatically controlled rotating gate, an electrically or pneumatically controlled moving gate, which may increase the corresponding mechanism life. Preferably, as shown in fig. 4 and 5, the bearing portion 13121 of the first pallet assembly 1312 is provided with a roller 13123, the rotation axis of the roller 13123 is parallel to the rotation axis of the elastic door, and the roller 13123 protrudes out of the bottom surface of the bearing portion 13121, so that the roller 13123 contacts the elastic door and pushes the elastic door open during the downward movement of the first pallet assembly 1312, and the roller 13123 can reduce the interference force between the first pallet assembly 1312 and the elastic door, so that the working process is smoother and the damage to the structure is avoided.

In an alternative embodiment, as shown in fig. 2, the bottom of the wash bin 132 is provided with an ultrasonic generating device 135 and/or a liquid perturbation device 136. The ultrasonic generating device 135 is used for generating ultrasonic waves, the liquid disturbing device 136 is used for causing a disturbing effect on the cleaning liquid, and the cleaning liquid is used for realizing the physical scouring effect on the printing piece to be cleaned and improving the cleaning effect. The liquid perturbation device 136 includes, but is not limited to, a bubbling device, a vortex generating device, a shaking device, a centrifuging device, or a stirring device, i.e., the perturbation mode of the liquid perturbation device 136 includes, but is not limited to, at least one of bubbling, vortex, shaking, centrifuging, and stirring. Through adopting the cleaner in this application to wash the resin on the target object, cooperation ultrasonic generator 135 or liquid disturbance device 136 can carry out certain impact to the target object to separate the resin with treating to wash and print the piece more easily, and also be convenient for take away the waste liquid after the cleaner washs under the effect of impact force, can show improvement cleaning performance, shorten the cleaning time.

In an alternative embodiment, as shown in fig. 1-3, the bottom of the purge bin 132 is also provided with a heat sink bin 137. During operation of the cleaning module 130, heat generated by the ultrasonic generator 135 and/or the liquid perturbation device 136 may cause a temperature rise of the cleaning agent, which may damage the printed matter, and may also be an explosion risk, and the purpose of the heat sink 137 is to cool the cleaning agent, so as to control the temperature of the cleaning agent and thereby avoid a safety risk. Specifically, the open-top of cooling bin 137, the bottom of washing bin 132 stretches into inside cooling bin 137, cooling bin 137 and washing bin 132 are all fixed on frame 138, be provided with the backup pad on the inner wall of frame 138, the marginal valgus and the backup pad stromatolite setting of cooling bin 137 opening part, make cooling bin 137 erect in the backup pad, the top of cooling bin 137 is provided with the liquid feeding funnel, the liquid feeding funnel is used for adding heat transfer medium to cooling bin 137 in, cooling bin 137's bottom is provided with the fluid-discharge valve, the fluid-discharge valve is used for discharging the heat transfer medium in the cooling bin 137, thereby make can realize the replenishment and the release of heat transfer medium in the cooling bin 137, still be used for realizing the order of heat transfer medium in the cooling bin 137 when necessary, promote heat exchange efficiency.

In the cleaning process, a large amount of organic solvents are needed, and basically all the solvents belong to inflammable and explosive objects, so that the cleaning agent has high cost, strong pungent smell, strong volatility, inflammability and explosiveness, and has dangerous and potential safety hazards when being used or stored in a large amount. The existing automation technology generally adopts a PLC or other control modules to drive a lifting table, a conveying chain and other transmission mechanisms to carry out loading and unloading, and is matched with an electric gripper and a pneumatic gripper to carry out turnover transportation on products, and then solvent replacement is carried out in modes of pumping and the like. The whole technology needs to use a large number of strong and weak current devices, the traditional explosion-proof scheme can not cover the devices completely if intrinsic safety type devices are adopted, the cost of the devices which can be covered is extremely high, and even if the devices are replaced completely, the automation significance is lost from the dimension of cost benefit. The safety of directly manufactured products is extremely low by combining the existing automation technology and the inflammable and explosive property of cleaning solvents, and major accidents can be caused by slight carelessness, so that the development of the safety cleaning equipment has great significance. Based on this, on the basis of the cleaning module 130 provided in the embodiment of the present application, the embodiment of the present application further provides a cleaning device.

A cleaning apparatus according to an embodiment of the present application is described below with reference to the accompanying drawings. As shown in fig. 9, the cleaning apparatus mainly includes three parts of a host unit 100, a cleaning agent storage unit 200, and an electric appliance processing unit 300.

The main unit 100 is used for executing specific cleaning work, the main unit 100 comprises a rack 110, an loading and unloading module 120 and a cleaning module 130, the main unit 100 is provided with a pneumatically driven execution unit, and the rack 110 is provided with a plurality of stations; the loading and unloading module 120 is provided with at least one and is configured to load or unload the target object; the cleaning module 130 is provided with a plurality of cleaning modules and is configured to clean the target object; the pneumatically driven execution unit is configured to perform a preset action on the target. The cleaning agent storage unit 200 is configured to store cleaning agent, the cleaning agent storage unit 200 is used for providing the cleaning agent to each cleaning module 130, and a communicating vessel type liquid level meter which does not need to be electrified can be arranged on the cleaning agent storage unit 200 so as to be used for detecting the liquid level in the cleaning agent storage unit 200, thereby reducing the safety risk. As shown in fig. 10, the electrical processing unit 300 is configured to control a pneumatically driven execution unit, and the electrical processing unit 300 includes a cabinet 310 and a portion of a strong current module 320 enclosed in the cabinet 310, the strong current module 320 being used to supply power to the host unit 100. The cleaning module 130 is the cleaning module in the foregoing embodiments.

It should be noted that, in some embodiments, the host unit 100, the cleaning agent storage unit 200, and the electrical appliance processing unit 300 may be separately provided as shown in fig. 9; in some embodiments, the host unit 100, the cleaning agent storage unit 200, and the appliance processing unit 300 may be integrally provided together; in some embodiments, any two of the host unit 100, the cleaning agent storage unit 200, and the appliance processing unit 300 may be integrally provided together, and the other separately provided.

The cleaning equipment in the embodiment of the application adopts pneumatic motion control, so that the contact between electricity and solvent is reduced, and the cleaning process of the cleaning equipment is safer. Furthermore, the wiring of the pneumatically driven execution unit is simpler.

In some embodiments, the pneumatically driven execution unit includes a handling module 140, the handling module 140 being configured to handle the object such that the object moves or stays over the stations. Specifically, the carrying module 140 is disposed on the rack 110, and the carrying module 140 carries the object to move above the stations and can stay above any station.

As shown in fig. 15, the handling module 140 includes a fourth driving member 141 and a mechanical gripper 142, the fourth driving member 141 being configured to drive the mechanical gripper 142 to reciprocate in a horizontal direction, the mechanical gripper 141 being configured to grasp or release a target object, the fourth driving member 142 preferably being a cylinder. The mechanical gripping jaw 142 is located above the working position, and is used for gripping the object from the upper part of the previous working position and then releasing the object from the upper part of the next working position. Preferably, the stations are equally spaced, the mechanical clamping jaws 142 of the carrying module 140 are equally spaced, and the fourth driving member 141 drives the plurality of mechanical clamping jaws 142 to move at the same time, and the spacing between the stations is equal to the spacing between the mechanical clamping jaws 142. After each station forms an equidistant multi-station layout, when one mechanical clamping jaw 142 faces to one station, other mechanical clamping jaws 142 can also face to one other station, the mechanical clamping jaw 142 is positioned above each station, when the corresponding object of each station is lifted to the highest position, the mechanical clamping jaws 142 act to grasp the corresponding object, the plurality of mechanical clamping jaws 142 are driven to shift through the same first driving piece 141, the object of the last station can be simultaneously moved to the position of the next station, the corresponding station receives the object after the position is in place, and the mechanical clamping jaws 142 are opened to release the object. Therefore, a plurality of cleaning process lines can work simultaneously, mechanical control is simple, and production efficiency is improved. Preferably, the number of the stations is one more than the number of the mechanical clamping jaws 142, so that the mechanical clamping jaws 142 and each station can be coordinated in an overall manner, for example, the host unit 100 comprises five stations with equal intervals, the carrying module 140 comprises four mechanical clamping jaws 142 with equal intervals, during the working process, the carrying module 140 only needs to control the four mechanical clamping jaws 142 to switch between two position states, in the first position state, the four mechanical clamping jaws 142 respectively face the first four stations, and in the second position state, the four mechanical clamping jaws 142 simultaneously move by a distance of one interval, so that the four clamping jaws respectively face the three later stations.

It should be noted that, in the above embodiment, the handling module of the cleaning apparatus is pneumatically driven, but other actuators of the cleaning apparatus (e.g., the first lifting assembly 131, the blow-drying assembly 133, the liquid disturbing device 136) may be driven by any driving method, including but not limited to pneumatic driving and electric driving.

In some embodiments, the pneumatically driven execution unit further comprises a first lifting assembly 131 in the cleaning module 130, the first lifting assembly 131 being configured to move the target in an up-down direction at the cleaning module. Specifically, after the first lifting assembly 131 receives the target object from the handling module 140, the target object is driven to move downward, so that the target object enters the cleaning bin 132 and is in the cleaning agent in the cleaning bin 132, and after the cleaning is completed, the first lifting assembly 131 is lifted to drive the target object to leave the cleaning agent in the cleaning bin 132. The first elevating assembly 131 includes a first driving member 1311 and a first pallet assembly 1312, the first driving member 1311 being configured to drive the first pallet assembly 1312 to reciprocate in a vertical direction. The first pallet assembly 1312 is used for carrying a target object and driving the target object to rise or fall under the force of the first driving member 1311. The first driving member 1311 is a three-position five-way electromagnetic valve and an air cylinder which are connected with each other, the air cylinder extends along the up-down direction, two ends of the air cylinder are fixed on the cleaning module 130 through fixing members, the air cylinder is matched with an inductor through the three-position five-way electromagnetic valve, and the air cylinder can stay and lock at any position in the up-down direction stroke by utilizing the middle sealing function of the electromagnetic valve, so that the first supporting plate assembly 1312 and a target object on the first supporting plate assembly stay at any position. It should be noted that, in the present embodiment, the first lifting assembly 131 of the cleaning apparatus is pneumatically driven, but other actuators of the cleaning apparatus (such as the blow-drying assembly 133, the liquid perturbation device 136, and the carrying module 140) may be driven by any driving method, including but not limited to pneumatic driving and electric driving.

In some embodiments, the pneumatically driven execution unit further comprises a liquid perturbation device 136 of the washing module 130, the liquid perturbation device 136 being arranged at the bottom of the washing compartment 132. The liquid disturbing device 136 is used for causing a disturbing effect on the cleaning liquid, and the cleaning agent is used for realizing the physical scouring effect on the printing piece to be cleaned, so that the cleaning effect is improved. The liquid perturbation device 136 includes, but is not limited to, a bubbling device, a vortex generating device, a shaking device, or a stirring device, i.e., the perturbation mode of the liquid perturbation device 136 includes, but is not limited to, at least one of bubbling, vortexing, shaking, and stirring. Through adopting the cleaner in this application to wash the resin on the target object, cooperation liquid disturbance device 136 can carry out certain impact to the target object to separate the resin with waiting to wash the printing piece more easily, and also be convenient for take away the waste liquid after the cleaner washs under the effect of impact force, can show improvement cleaning performance, shorten the cleaning time. It should be noted that, in the present embodiment, the liquid disturbing device 136 of the cleaning apparatus is pneumatically driven, but other actuating mechanisms of the cleaning apparatus (such as the first lifting assembly 131, the blow-drying assembly 133, and the carrying module 140) may be driven by any driving method, including but not limited to pneumatic driving and electric driving. .

In some embodiments, the rack 110 is a main body bearing structure of the host unit 100, and the plurality of stations disposed on the rack 110 may further include at least one of a UV light curing station, a drying station, and a heat curing station in addition to at least one of a loading station 111, a plurality of cleaning stations 112, and a discharging station 113. The loading and unloading module 120 is disposed at the loading station 111 and the unloading station 113, the cleaning module 130 is disposed at the cleaning station 112, and the second lifting assembly 114 configured to drive the object to move in the up-down direction is disposed at the loading station 111 and the unloading station 113. As shown in fig. 13, the second lifting assembly 114 is disposed at the feeding station 111 and the discharging station 113, and the second lifting assembly 114 is configured to drive the object to move in the up-down direction, so as to assist the feeding and discharging module 120 to realize the feeding and discharging functions. Specifically, at the feeding station 111, the second lifting assembly 114 is configured to drive the object on the feeding and discharging module 120 to rise from a low position to a high position, and complete docking with the carrying module 140, and the carrying module 140 carries the object to the cleaning module 130 for cleaning; at the blanking station 113, the second lifting assembly 114 is configured to receive the cleaned object conveyed by the conveying module 140 and drive the object to descend from a high position to a low position on the loading and blanking module 120. Optionally, the second lifting assembly 114 includes a third drive member and a second pallet assembly, the third drive member configured to drive the second pallet assembly to reciprocate in a vertical direction. The specific arrangement of the third driving member may refer to the first driving member 1311, the specific arrangement of the second supporting plate assembly may refer to the first supporting plate assembly 1312, and the difference between the two is that the first lifting assembly 131 is disposed on the cleaning module 130, the second lifting assembly 114 is disposed at the feeding station 111 or the discharging station 113, and other specific arrangement modes are referred to each other, which will not be repeated herein.

In some embodiments, the cleaning module 130 includes a cleaning bin 132 and a third lifting assembly, the cleaning bin 132 is an open-top structure, a cleaning space is formed inside the cleaning bin 132, and the cleaning bin 132 is configured to store cleaning agent and clean objects. The third lifting assembly is configured to drive the object to move up and down at the cleaning module. After the third lifting assembly receives the object from the carrying module 140, the object is driven to move downwards, so that the object enters the cleaning bin 132 and is in the cleaning agent in the cleaning bin 132, and after the cleaning is finished, the third lifting assembly is lifted to drive the object to leave the cleaning agent in the cleaning bin 132. The third lifting assembly can be lifted to a high position to receive the object conveyed by the conveying module 140 and located right above the corresponding station, and drive the object to descend into the cleaning module 130, the cleaning module 130 cleans the object, and after the cleaning is finished, the third lifting assembly drives the object to lift to a high position, and the conveying module 140 continues to convey the object to the next station. The third lifting assembly specifically includes a fifth drive member configured to drive the third pallet assembly to reciprocate in a vertical direction and a third pallet assembly. The third supporting plate component is used for bearing the target and driving the target to ascend or descend under the acting force of the fifth driving piece. The fifth driving piece can be an intrinsic safety type motor and a synchronous belt which are connected with each other, the intrinsic safety type motor drives the synchronous belt to rotate, and the synchronous belt drives the third supporting plate component to reciprocate in the up-down direction; the fifth driving piece can also be an intrinsic safety type motor and a screw rod assembly which are connected with each other, the rotation motion of the intrinsic safety type motor is converted into the linear motion of the screw rod assembly, and the screw rod assembly drives the third supporting plate assembly to reciprocate in the up-down direction.

In some embodiments, the pneumatically driven execution unit further comprises a blow-dry assembly 133, the blow-dry assembly 133 being configured to expel cleaning agent on the target object by an air flow. The blow-drying assembly 133 includes a second driving member 1331 and a nozzle 1332, the nozzle 1332 being positioned above the cleaning bin 132, the second driving member 1331 being configured to drive the nozzle 1332 to reciprocate in a horizontal direction, the nozzle 1332 being configured to spray an air stream toward a target object. The second driving member 1331 is preferably a cylinder, and during operation, the nozzle 1332 is driven by the second driving member 1331 to reciprocate above the target object, and air flow is used for dispersing cleaning agent on the surface and in the target object through the nozzle 1332, the dispersed cleaning agent has two states of gas phase and liquid phase, the gas phase cleaning agent can be pumped to the outside through an exhaust system of the device, and the liquid phase cleaning agent can be returned to the inside of the cleaning bin 132 through drainage of the side wall of the bin 431 of the cleaning bin 132. The air flow used for dispersing the residual cleaning agent can be compressed air generated by an air compressor, and also can be air flow generated by an ion fan or a safety fan, and the use of the ion fan and the safety fan can reduce the limitation of equipment on low field requirements. It should be noted that, in the present embodiment, the blow-drying assembly 133 of the cleaning apparatus is pneumatically driven, but other actuators (e.g. the carrying module 140, the first lifting assembly 131, the liquid disturbing device 136) of the cleaning apparatus may be driven by any driving method, including but not limited to pneumatic driving and electric driving.

In some embodiments, the host unit 100 further includes a detergent replenishment device 170, and the detergent replenishment device 170 may be a gravity feed system, an intrinsically safe electric liquid pump, or a pneumatic liquid pump. The cleaning agent replenishment device 170 functions to replenish the cleaning agent in the cleaning agent storage unit 200 into the cleaning bin 132 of the cleaning module 130.

Alternatively, as shown in fig. 13, the cleaning agent replenishing device 170 is selected as an intrinsically safe electric liquid feeding pump or a pneumatic liquid feeding pump, and the cleaning agent in the cleaning agent storage module is directly pumped into the cleaning bin 132 through a pipeline by the driving force of the intrinsically safe electric liquid feeding pump or the pneumatic liquid feeding pump.

Optionally, the cleaning agent replenishing device 170 is a gravity fluid infusion system, the gravity fluid infusion system includes a transfer fluid infusion bin, a vacuum generator, and a fluid level switch, wherein: the transfer liquid adding bin is connected with the cleaning agent storage module through a pipeline, a check valve is arranged at the inlet of the transfer liquid adding bin, and a switch valve is arranged at the bottom of the transfer liquid adding bin; the vacuum generator is configured to reduce the vacuum degree in the transfer liquid adding bin; the liquid level switch is configured to detect whether the liquid level in the transfer liquid storage bin reaches an upper limit. The transfer liquid feeding bin can be made by adopting a customized airtight container, the customized airtight container is communicated with an external cleaning agent storage module through a pipeline, a one-way check valve is arranged at the inlet of the transfer liquid feeding bin, a switch ball valve is arranged at the bottom of the transfer liquid feeding bin, the vacuum degree in the transfer liquid feeding bin is reduced by a vacuum generator, the cleaning agent in the cleaning agent storage module flows into the transfer liquid feeding bin by utilizing the atmospheric pressure difference, the liquid level in the transfer liquid feeding bin is detected by a liquid level switch, whether the liquid level in the transfer liquid feeding bin reaches the upper limit or not is detected by the liquid level switch, after the liquid level switch reaches the upper limit of the liquid level, the vacuum generator is closed, a switch valve at the bottom of the transfer liquid feeding bin is opened, the cleaning agent in the transfer liquid feeding bin is supplemented into a cleaning bin 132 by utilizing the gravity pressure difference, and after the liquid level in the cleaning bin 132 reaches the standard, the switch valve is closed, and the liquid filling is completed. The on-off valve is preferably a ball valve.

In some embodiments, the pneumatically driven execution unit further comprises an exhaust configured to exhaust gas from the host unit 100, thereby reducing the organic solvent content in the working environment and improving safety. It should be noted that, in the present embodiment, the exhaust device of the cleaning apparatus is pneumatically driven, but other actuating mechanisms of the cleaning apparatus (such as the carrying module 140, the first lifting assembly 131, the blow-drying assembly 133, and the liquid disturbing device 136) may be driven by any driving method, including but not limited to pneumatic driving and electric driving.

In some embodiments, as shown in fig. 21, the cleaning apparatus further includes an organic solvent monitoring unit 500, the organic solvent monitoring unit 500 being configured to detect the concentration of the organic solvent in the environment and to shut down and/or cut off the total power supply in case the concentration of the organic solvent 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, where the independent power supply 510 is configured to independently supply power to the organic solvent monitoring unit 500, so that the power supply of the organic solvent monitoring unit 500 is independent of the total power supply 321 of the cleaning device; the organic solvent sensor 520 is used for detecting the concentration of the organic solvent in the environment; the actuator is used to emergency shut down or shut off the mains power 321 in case the concentration of organic solvent exceeds a safety threshold. Through setting up organic solvent monitoring unit 500, can monitor whether the organic solvent in the operational environment exceeds standard to in time handle the dangerous situation that the organic solvent exceeds standard, carry out emergency shutdown or cut off the total power, improve the security.

Optionally, the actuator includes a scram module 540, where the scram module 540 is usually disposed on the host unit 100 and can be triggered manually and automatically, and after the scram module 540 is triggered, the cleaning apparatus is stopped emergently, and the working units of the emergency stop include, but are not limited to, the loading and unloading module 120, the cleaning module 130, the carrying module 140 and the cleaning agent recovery module 400, and when the organic solvent sensor 520 detects that the organic solvent exceeds the safety threshold, the scram module 540 can be triggered directly to act, so that the cleaning apparatus is stopped emergently. Preferably, the actuator may further include a contactor 550 for cutting off the main power 321, and after the emergency stop module 540 is triggered, on the one hand, an emergency stop information signal may be fed back to the controller 530, and on the other hand, the contactor 550 may be directly triggered to act in a loop control manner, so as to cut off the main power 321;

optionally, the actuator includes a relay 560 for switching off the main power 321, and when the organic solvent sensor 520 detects that the organic solvent exceeds the safety threshold, the controller 530 triggers the relay 560 to act in a signal control manner, thereby switching off the main power 321.

It should be noted that the organic solvent sensor 520 may be used to detect various organic solvents that are desired to be detected, including but not limited to alcohol and isopropyl alcohol; when the organic solvents to be detected include a plurality of types, the organic solvent sensor 520 may select one type of sensor capable of detecting a plurality of types of organic solvents at the same time, or may select a plurality of types of sensors capable of detecting a different single organic solvent; the specific installation positions and the number of the organic solvent sensors 520 may also be specifically set according to needs, and the installation positions of the organic solvent sensors 520 are preferably various positions where the organic solvent is easily generated or accumulated and areas with high explosion-proof requirements, including, but not limited to, above the cleaning bin of the cleaning module 130, around the ultrasonic generating device 135 of the cleaning module 130, around the driving mechanism of the first lifting assembly 131, around the carrying module 140, the electric box module 160, around the collecting bin for collecting waste liquid, and on the cabinet 310 of the electric processing unit 300 in which the solvent recovery module 400 is disposed.

In some embodiments, the pneumatically driven execution unit further comprises a pumping device configured to pump the cleaning agent in the cleaning agent storage unit 200 to the cleaning module 130 and to expel the cleaning waste liquid in said cleaning module 130. It should be noted that, in the present embodiment, the pumping device of the cleaning apparatus is pneumatically driven, but other actuating mechanisms of the cleaning apparatus (such as the carrying module 140, the first lifting assembly 131, the blow-drying assembly 133, the liquid disturbing device 136, and the air exhausting device) may be driven by any driving method, including but not limited to pneumatic driving and electric driving.

In some embodiments, the cleaning apparatus further comprises an air supply device configured to supply air to the execution unit, the air supply device including, but not limited to, an air compression apparatus or an air reservoir. The air source device can be independently arranged, an interface for connecting with the air source device is reserved on the cleaning equipment, and the air source device is connected through the interface when in use; the air source device can be integrated with any one of the host unit 100, the cleaning agent storage unit 200 and the electrical appliance processing unit 300.

In some embodiments, as shown in fig. 11 and 12, the host unit 100 includes a rack 110, a loading and unloading module 120, a cleaning module 130, and a handling module 140, and a plurality of stations disposed on the rack 110 include a loading station 111, a plurality of cleaning stations 112, and a unloading station 113; the feeding and discharging modules 120 are provided with at least one, and each feeding and discharging module 120 is detachably arranged at any one of the feeding station 111 and the discharging station 113; the cleaning modules 130 are provided in a plurality, and each cleaning module 130 is detachably arranged at any one of the cleaning stations 112; the handling module 140 is disposed on the frame 110, and the handling module 140 is configured to move the object above the stations and to hold the object above any of the stations.

In some embodiments, the loading and unloading module 120 may be configured to be one, during the working process, the loading and unloading module 120 carrying the object to be cleaned is assembled with the loading station 111, the carrying module 140 carries the object on the loading and unloading module 120 to the position above the cleaning station 112, at this time, the loading and unloading module 120 completes the loading work and is empty, then the loading and unloading module 120 is transferred to the position of the unloading station 113 to be assembled with the unloading station 113, and the carrying module 140 carries the object cleaned by the cleaning module 130 to the position above the unloading station 113, and the loading and unloading module 120 at the position of the unloading station 113 receives and completes the unloading. In some embodiments, the number of the loading and unloading modules 120 may be multiple, in the working process, the loading and unloading modules 120 carrying the objects to be cleaned are assembled with the loading station 111, the unloading modules 120 are assembled with the unloading station 113 in a matched manner, the carrying module 140 carries the objects on the loading and unloading modules 120 at the loading station 111 to the position above the cleaning station 112, after cleaning, the carrying module carries the objects cleaned by the cleaning module 130 to the position above the unloading station 113, and the objects are carried by the loading and unloading modules 120 at the unloading station 113 and the unloading is completed.

In the cleaning apparatus provided in the above embodiment, any one of the cleaning modules 130 may be assembled with any one of the cleaning stations 112, and a person skilled in the art may set the number of assemblies of the cleaning modules 130 and the assembly position of each cleaning module 130 according to needs, and each cleaning module 130 has the same standard interface to be adapted to each cleaning station 112. Taking the cleaning apparatus as an example with three cleaning stations 112, it is illustrated that: in some usage scenarios, only two cleaning modules 130 are needed, and the two cleaning modules 130 can be respectively installed on the two cleaning stations 112; in some usage scenarios, as shown in fig. 3, three cleaning modules 130 are needed, where the three cleaning modules 130 are installed on the three cleaning stations 112 respectively; in some use scenarios, the cleaning modules 130 on different cleaning stations 112 may be interchanged in position as desired.

Specifically, the mechanical clamping jaw 142 of the carrying module 140 is disposed above the feeding station 111, the cleaning station 112 and the discharging station 113, the first lifting assembly 131 is provided with a plurality of lifting assemblies and is respectively disposed above the first cleaning module 1301, the second cleaning module 1302 and the third cleaning module 1303, the second lifting assembly 114 is respectively disposed at the feeding station 111 and the discharging station 113 correspondingly, and the mechanical clamping jaw 142 is used for carrying the object in the horizontal direction above the feeding station 111, the cleaning station 112 and the discharging station 113, so that the object moves from the upper side of one station to the upper side of the other station; the first lifting assembly 131 is used for realizing lifting movement of the target object at the cleaning station 112, so that the target object descends from the upper part of the cleaning bin 132 to the inside of the cleaning bin 132 or ascends from the inside of the cleaning bin 132 to the upper part of the cleaning bin 132; the second lifting assembly 114 is used for realizing lifting movement of the target object at the feeding station 111 and the discharging station 113, so that the target object is fed from the feeding module or discharged from the discharging module. It should be noted that, the carrying module 140, the first lifting component 131 and the second lifting component 114 are cooperatively matched with each other, specifically, after the target object in the feeding module is lifted to a high position by the second lifting component 114, the mechanical clamping jaw 142 of the carrying module 140 above the feeding module 111 is used for controlling the target object, the mechanical clamping jaw 142 carries the target object to the upper side of the first cleaning module 1301, at this time, the first lifting component 131 of the first cleaning module 1301 is lifted to a high position to receive the target object on the mechanical clamping jaw 142, then the first lifting component 131 of the first cleaning module 1301 drives the target object to be lifted to the water-based cleaning agent in the first cleaning module 1301 for cleaning, the first lifting component 131 of the first cleaning module 1301 drives the target object to be lifted to a high position, the mechanical clamping jaw 142 of the first cleaning module 1301 is continuously driven to a high position by the mechanical clamping jaw 142, the first lifting component 131 of the second cleaning module 1302 is lifted to a coarse cleaning in the coarse cleaning machine of the second cleaning module 1302, the first lifting component 131 of the first cleaning module is lifted to a high position by the first lifting component 131 of the second cleaning module 1302, the target object is driven to the third lifting component 1303 is lifted to the high position by the second lifting component 131 of the second cleaning module 1303, the target object is continuously driven to the cleaning module 113 is lifted to the high position by the second lifting component of the first lifting component of the cleaning module is continuously driven to the cleaning object be lifted by the third lifting component 113, and the first lifting component is continuously lifted to the cleaning object is lifted to the cleaning the target object to the cleaning object is lifted to the cleaning object bit side of the cleaning object is continuously lifted by the first lifting component 1303 is continuously lifted to a high position by the first lifting component is continuously driven to the cleaning object is lifted to the cleaning object bit mounted to the cleaning object bit is lifted to the cleaning a high to the cleaning object is lifted to be lifted to the cleaning a high position by the cleaning object is continuously.

In the cleaning device provided by the embodiment of the application, the loading and unloading module 120 and the cleaning module 130 are respectively made into standardized modules, so that the combined installation mode and the number of the modules can be changed according to the requirement of the cleaning process, and the convenience of use and maintenance is greatly improved.

In an alternative embodiment, the loading and unloading module 120 is a movable skip as shown in fig. 14, the movable skip may stack and store a certain number of cleaning baskets 150, a certain amount of printing pieces to be cleaned may be loaded in each cleaning basket 150, the movable skip may be guided along with the rack 110 to push into the loading station 111 for grabbing a target object by the mechanical clamping jaw 142 of the handling module 140, and the movable skip may be guided along with the rack 110 to push into the unloading station 113 for receiving the target object released by the mechanical clamping jaw 142 of the handling module 140; alternatively, in addition to the loading and unloading module 120 using a movable skip, the loading and unloading module 120 may also adopt a structure such as a continuous conveyor belt or a rotary feeding table.

A large number of strong and weak current devices are needed in the cleaning equipment, the traditional explosion-proof scheme cannot be completely covered if intrinsic safety type components are adopted, the cost of the devices which can be covered is extremely high, and even if the devices are completely replaced, the automation significance is lost from the dimension of cost benefit. Based on this, in some embodiments, as shown in fig. 9 and 10, the electrical processing unit 300 independently encapsulates the strong electrical devices with high risk of open fire such as the customized weldment and the heating module into the strong electrical module 320, and only needs to keep part of weak electrical devices such as the low risk sensor in the host unit 100 by docking with the host unit 100 through the pipeline connection, so that the safety risk can be greatly reduced. In some embodiments, as shown in fig. 11-13, the host unit 100 of the cleaning apparatus further includes an electrical box module 160 and a positive pressure exhaust, at least a portion of the weak electrical components are integrated within the electrical box module 160, and at least a portion of the weak electrical components are located within the positive pressure exhaust formed by the positive pressure exhaust. The cleaning module 130 generally mainly adopts an automation mechanism driven by compressed air, and part of weak current elements with low risk, such as an electromagnetic valve, a driver, a position sensor and the like, can be integrated into the customized electric box module 160 according to the functional module partition, and are in butt joint with a corresponding executing mechanism through a quick-plugging pipeline, so that for the electric elements which cannot be packaged in the electric box module 160, the positive pressure exhaust device can adopt compressed air to ensure that the concentration of the peripheral flammable and explosive gas cannot reach a burning and explosion interval, and the safety risk is further reduced. It should be noted that, the weak current element is isolated between the electric box module 160 and the positive pressure exhaust device to ensure that the open fire risk cannot contact with the explosion environment, and the cleaning agent with higher explosion lower limit can be applied, for example, the cleaning agent with lower explosion lower limit is applied to the product requirement, the corresponding weak current element can be replaced with the safety standard element, and the anti-explosion authentication rule of all regions can be adapted.

The water-based cleaning agent after 3D printing is generally recycled in the related art as follows. One is to adopt reverse osmosis membrane filtration, this scheme is with high costs, inefficiency, the filter core is with low life-span, can't meet the demand of automated production; the other is that the cleaning agent obtained by the scheme still contains a certain amount of resin materials (about 1 percent) through light curing treatment and filter element filtration, the cleaning capability is poor, and when the photosensitive resin in the waste liquid is lower than a certain concentration, the photosensitive resin cannot be cured, and the waste liquid cannot be recycled. Therefore, the related technology cannot complete recovery of the water-based cleaning agent with low concentration of the uncured photosensitive resin in the 3D post-printing treatment link.

Based on this, the embodiment of the present application also provides a cleaning agent recovery method for recovering a water-based cleaning agent after cleaning a 3D printing member, and a cleaning agent recovery module 400 for implementing the cleaning agent recovery method is provided in the cleaning apparatus. The cleaning agent recovery method specifically comprises the following steps.

S1, photo-curing treatment.

And (3) carrying out photo-curing treatment on the cleaning agent containing the resin impurities, lifting the local concentration of the resin impurities in the cleaning agent by using an adsorptive filter material in the photo-curing treatment process, and carrying out primary filtration on the cleaning agent by using the adsorptive filter material. The photo-curing treatment is to emit light of a specific wavelength toward the cleaning agent mixed with the uncured photosensitive resin material, and the photosensitive resin material in the cleaning agent is cured to become a solid resin material to be separated from the cleaning agent under the irradiation of the light of the specific wavelength.

The cleaning agent for the cleaning agent recovery method provided by the embodiment of the invention is a water-based cleaning agent for cleaning the 3D printing piece. The water-based cleaning agent can effectively remove residual uncured photosensitive resin material attached to the photo-cured 3D printing piece. The water-based cleaning solution mainly utilizes lipophilic groups in the surfactant to separate residual uncured resin attached to the surface of a printing piece from the printing piece, and forms dispersed micelles in water.

In the related art, although there is a technical scheme of solidifying the resin in the cleaning agent by photo-solidifying and then separating out the resin, the uncured photosensitive resin in the waste liquid cannot be solidified when the concentration is lower than a certain concentration. For example, the concentration of uncured resin itself in the cleaning agent is low, and the cleaning agent cannot be recycled by the photo-curing treatment; for another example, although the concentration of the uncured resin in the cleaning agent is high, as the photo-curing treatment progresses, the resin is continuously cured and precipitated, the concentration of the uncured resin in the cleaning agent gradually decreases, and finally, a part of the resin remains in the cleaning agent and cannot be precipitated by the photo-curing treatment.

In view of this, in the above embodiments, by providing the adsorptive filter material, the uncured resin of low concentration is agglomerated, so that the local concentration of the resin is increased, and the most efficient precipitation by light curing is achieved. Specifically, the adsorptive filter material has developed pores to make it have a large specific surface area, and the surface area per gram of the material is 500-0 square meter, so that it has good adsorption characteristics. The adsorption process can be classified into physical adsorption and chemical adsorption according to the difference of forces between the adsorption filter material molecules and the resin molecules in the adsorption process. In the adsorption process, 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 between the adsorbent filter material and the resin molecules is a chemical bond, it is referred to as chemisorption. The adsorption strength of physical adsorption is mainly related to the physical properties of the adsorptive filter material, and is basically unrelated to the chemical properties of the adsorptive filter material. The van der Waals force is weak, so that the structural influence on the resin molecules is small, the force is the same as the intermolecular cohesive force, the physical adsorption phenomenon can be analogized into a condensation phenomenon, and the chemical property of the resin is still unchanged during the physical adsorption. In the process that the cleaning agent containing the uncured resin flows through the adsorptive filter material, strong physical adsorption action occurs between the uncured resin and the adsorptive filter material, so that the flow velocity of the cleaning agent in the adsorptive filter material is reduced or stopped, no physical adsorption action exists between the water-based cleaning agent and the adsorptive filter material or the physical adsorption action between the water-based cleaning agent and the adsorptive filter material is weak, the flow velocity of the water-based cleaning agent in the adsorptive filter material is high, the concentration of the uncured resin in the cleaning agent in the water-based cleaning agent is increased due to the physical adsorption phenomenon of the adsorptive filter material, and the uncured resin after enrichment is effectively cured and separated in the photo-curing treatment process.

It can be seen that, whether the concentration of the uncured resin in the cleaning agent is low or the concentration of the uncured resin in the cleaning agent gradually decreases with the progress of the photo-curing treatment, the uncured resin in the cleaning agent can be enriched by the adsorptive filter material in the above embodiment, so that the local resin concentration is increased, and the uncured resin is cured and separated out by the photo-curing treatment.

The adsorptive filter material has the function of improving the local concentration of resin impurities in the cleaning agent, and can also perform primary filtering on the cleaning agent, namely, the adsorptive filter material is used for filtering the solidified resin separated out after the photo-solidification treatment.

The skilled person found through research that a great amount of solid impurities can be precipitated after the photo-curing treatment of the above embodiment from the waste liquid of the cleaning agent, and is specifically characterized in that when the content of resin impurities in the initial cleaning agent is 5%, the content of uncured resin impurities in the obtained cleaning agent is usually 3% after the photo-curing treatment without the adsorptive filter material, and when the photo-curing treatment is performed with the adsorptive filter material according to the above example, the content of uncured resin impurities in the obtained cleaning agent can be generally reduced to 1% or less, and the cleaning agent having a lower resin concentration can be treated. In addition, after sedimentation treatment, the content of resin series impurities in the obtained cleaning agent can be generally lower than 0.1%, the main components are only water and cleaning auxiliary additives, conventional cleaning application can be carried out, the discharge treatment cost can be greatly reduced, and if the used cleaning auxiliary additives are non-toxic substances, the obtained cleaning agent can be discharged according to domestic wastewater.

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

Among them, the particle size range of the activated carbon particles is preferably 0.5 to 5mm, mainly for a super absorbent material. The active carbon is a black solid substance which is gasified (carbonized and activated) to form developed pores and takes carbon as a framework structure, and the developed pores enable the active carbon to have a large specific surface area, the surface area of each gram of material is 500-0 square meter, so that the active carbon has good adsorption characteristics, and the true specific gravity of the active carbon is 1.9-2.1. It should be noted that, the adsorption capacity of the activated carbon has a certain relation with the temperature and the water quality, the higher the water temperature is, the stronger the adsorption capacity of the activated carbon is, if the water temperature is higher than 30 ℃, the adsorption capacity reaches the limit, and the adsorption capacity may be gradually reduced; the adsorption capacity of the activated carbon for anionic substances is relatively reduced when the water quality is acidic, and the adsorption capacity of the activated carbon for cationic substances is reduced when the water quality is alkaline. Therefore, the temperature and the pH value of the fluid are unstable, which also affects the adsorption capacity of the activated carbon, and the temperature and the pH value of the cleaning agent need to be controlled during the use process.

Wherein, the medium-high density sponge is mainly aimed at materials with general water absorption. The sponge with medium and high density has a plurality of full holes and excellent adsorption property. The medium-high density sponge referred to in the embodiments of the present application is a sponge having a density of 18 g/cu m or more.

Wherein, the activated carbon cotton is mainly aimed at materials with lower water absorption rate. The active carbon cotton is a product which adopts a polymer bonding material to load active carbon on a non-collodion filter screen substrate, the main component of the active carbon cotton is carbon element, contains a small amount of hydrogen, oxygen and nitrogen groups, the specific surface area can reach 1000-1600 square meters per gram, and the micropore volume accounts for about 80% of the total pore volume.

In addition, the adsorptive filter material may be a combination of a plurality of active carbon particles, a medium-high density sponge and active carbon cotton, for example, an interlayer of active carbon particles may be provided in the medium-high density sponge, and for example, the medium-high density sponge and the active carbon cotton may be alternately laminated. The combination of multiple adsorptive filter materials can realize complementary advantages through different materials, and the adsorption effect is improved.

In some embodiments, the cleaning agent is agitated during the photo-curing process, and the agitation causes turbulence in the cleaning agent liquid, allowing the cleaning agent containing a small amount of residual resin to pass through the staggered capillaries of the adsorptive filter material for maximum separation. S2, conventional filtration. As can be seen from step S1, the adsorptive filter material, in addition to having the effect of increasing the local concentration of resin impurities in the cleaning agent, may also act as a primary filter for the cleaning agent, at least a portion of which precipitation cured resin has been filtered by the filtering adsorptive material during the photo-curing process. The primary purpose of the filtering adsorption material is to raise the local concentration of uncured resin in the cleaning agent through the adsorption effect of the filtering adsorption material, although the filtering pore diameter of the filtering adsorption material cannot be controlled to be extremely low, in general, 80% -90% of cured resin can be filtered out by primary filtering, but still a part of cured resin with low granularity level cannot be filtered out, and when the part of cured resin with low granularity level needs to be filtered out, conventional filtering in the step needs to be adopted for further filtering. It should be noted that, in this step S2, the primary filtering in step S1 is supplemented, and in the case that the filtering effect is good in step S1 or the requirement for the filtering index is not high, this step S2 may not be implemented, that is, step S2 is not an essential step of the cleaning agent recovery method, and a person skilled in the art may choose whether to implement this step S2 according to the need.

In an alternative embodiment, the conventional filtration includes a secondary filtration of the cleaning agent after the primary filtration, wherein the secondary filtration has a filtration accuracy less than that of the primary filtration. The filter accuracy in this application is the pore size of the filter cartridge and is understood to be the size of the largest particles that are allowed to pass through when the cleaning agent passes through the filter material. Preferably, the cleaning agent after the secondary filtration can be subjected to the tertiary filtration, and the filtration precision of the tertiary filtration is smaller than that of the secondary filtration. Of course, further filtering at a later level may be employed as necessary.

The specific filtering mode of the conventional filtering is not limited, and a filtering membrane or filtering cotton can be adopted for filtering, so that macromolecular substances in the cleaning agent are filtered out through the filtering membrane or the filtering cotton, toner in the cleaning agent and components with relatively large molecular weight are filtered out, and in particular, organic matters such as residual resin in the cleaning agent are filtered out. Specifically, the material for filtration is at least one selected from the group consisting of an ultra-permeable membrane, a nano-permeable membrane, a selectively permeable membrane, a polyester fiber filter cotton, a synthetic fiber filter cotton, a glass fiber filter cotton, an activated carbon filter cotton and a sponge.

S3, sedimentation treatment.

And carrying out sedimentation treatment on the cleaning agent, so that impurities with specific gravity greater than that of the cleaning agent are settled below the cleaning agent, and impurities with specific gravity less than that of the cleaning agent float above the cleaning agent, and the cleaning agent in the middle layer is recovered.

The resin cleaning waste liquid usually contains some fillers such as color paste, matt powder, gas silicon and other auxiliary agents, the substances are usually inorganic particles with the diameter of 1-100nm or water-insoluble compounds, the inorganic particles cannot be directly separated out through photo-curing treatment in the recovery process, the physical filtration cost is high, the efficiency is low, the service life of a filter element is short, the secondary cleaning effect of a cleaning agent can be influenced after the content is accumulated, and the problems of the recovery efficiency and the quality of the cleaning waste liquid can be solved to a great extent through sedimentation treatment in the step.

Specifically, the cleaning agent is introduced into the customized sedimentation tank 430, physical layering is achieved through the specific gravity difference between impurities and the cleaning agent, and the cleaning agent is supposed to have a specific gravity of 1, so that particles with specific gravity greater than 1 sink to the bottom in the sedimentation tank 430, lipid with specific gravity less than 1 can float to the liquid level surface, and the cleaning agent in the middle layer is separated for recycling.

In some embodiments, the cleaning agent is heated during the sedimentation process. On one hand, the liquid in the sedimentation tank 430 can accelerate solvent layering by a heating mode, so that the recovery efficiency of the cleaning agent is improved; on the other hand, the cleaning agent with the increased temperature can improve the saponification and emulsification reaction rate, reduce the surface tension, and improve the solubility of the resin to alkaline inorganic compounds, emulsifying agents and the like, so that the concentration of the alkaline inorganic compounds, emulsifying agents and the like is improved, the saponification and emulsification reaction rate is further improved, the viscosity of the resin can be reduced at high temperature, the resin is more easily separated from the surface of a member to be cleaned, and the cleaning difficulty of the resin is greatly reduced.

S4, strong filtration.

Generally, after the treatment of the step S3, the recovered cleaning agent can be used for cleaning the 3D printing member again, so that a better cleaning effect can be achieved, and the cleaning agent after the cleaning again can be continuously recovered through the steps S1-S3, so that the cleaning agent is reciprocally circulated. However, the impurities in the cleaning agent after long-term circulation are difficult to remove and are continuously enriched, and when the requirement on the use situation of the cleaning agent is high, the cleaning agent after the post-treatment in the steps S1-S3 is difficult to be qualified, and the strong filtration in the step S4 is necessary to be adopted for further treatment.

Specifically, after the step of settling the cleaning agent, the recovered cleaning agent in the middle layer is introduced into the bag filter 460 for strong filtration. The cleaning agent flows in from the top end of the filter bag of the bag-type filter 460, flows from the inner surface to the outer surface of the filter bag, and the filtered particulate impurities are trapped in the filter bag. The filter bag is preferably internally provided with active carbon or diatomite and other powerful adsorption powder which is matched with static pressure generated by the height difference to carry out microporous osmosis filtration, so that most impurities which are insoluble in water can be removed, and the liquid level height can be properly increased to pull up the pressure difference so as to improve the filtration efficiency.

In addition, the present step S4 is complementary to the photo-curing treatment and the sedimentation treatment, and when the cleaning agent treated in steps S1 to S3 satisfies the use condition, the present step S4 may not be performed, that is, step S4 is not an essential step of the cleaning agent recovery method, and a person skilled in the art may select whether to perform the present step S4 as needed.

16-20, the cleaning agent recovery module 400 in the cleaning device according to the embodiment of the present application includes a curing tank 410, an illumination module 420 and a sedimentation tank 430, wherein an adsorptive filter material 411 is disposed in the curing tank 410, and the adsorptive filter material is configured to raise a local concentration of resin impurities in the cleaning agent and perform primary filtration on the cleaning agent; the illumination module 420 is configured to illuminate the cleaning agent in the curing tank 410 so as to enable the photosensitive resin in the cleaning agent in the curing tank 410 to be cured and separated out; the settling tank 430 is configured to perform a settling treatment on the filtered cleaning agent.

The illumination module 420, the solidification pool 410 and the sedimentation pool 430 are sequentially arranged from top to bottom, so that the cleaning agent flowing out of the solidification pool 410 can automatically flow into the sedimentation pool 430 by gravity, and power is saved. The illumination module 420 is used for emitting ultraviolet light or visible light, and specific light types and wavelength ranges thereof are specifically determined according to specific objects to be cleaned.

As an alternative embodiment, as shown in fig. 17 to 18, the illumination module 420 includes a duct box 421 for forming a duct, and a radiator 422 and a light source 423 disposed in the duct box 421, where the light source 423 is used to emit ultraviolet light or visible light, and the light emitting direction is directed toward the lower curing pool 410. The air duct box 421 is provided with an air inlet 424 and an air outlet 425, air flow can enter the air duct box 421 through the air inlet 424 by driving of a fan, and is discharged from the air outlet 425 after flowing through the radiator 422, and the radiator 422 and the air duct are used for achieving heat dissipation of the light source 423. The top of the curing pool 410 is opened so that the light emitted from the light source 423 of the illumination module 420 can illuminate, for example, the curing pool 410.

As an alternative embodiment, as shown in fig. 18 to 20, the sedimentation tank 430 includes a tank body 431, an oil baffle 432 and a baffle 433 are provided in the tank body 431, the oil baffle 432 divides the inner space of the sedimentation tank 430 into a plurality of sedimentation tanks, a flow passage 434 is provided at the lower end of the oil baffle 432, an overflow passage 435 is provided above the baffle 433, the overflow passage 435 is higher than the flow passage 434, wherein the oil baffle 432 and the baffle 433 are provided in one-to-one correspondence, the oil baffle 432 and the baffle 433 may be provided in one group or in a plurality of groups, for example, as shown in fig. 19, the oil baffle 432 and the baffle 433 are provided in one group, the oil baffle 432 divides the inner space of the sedimentation tank 430 into a first sedimentation tank 4361 and a second sedimentation tank 4362, and as shown in fig. 20, the oil baffle 432 and the baffle 433 are provided in two groups, and the two oil baffles 432 divide the inner space of the sedimentation tank 430 into a first sedimentation tank 4361, a second sedimentation tank 4362 and a third sedimentation tank 4363 which are provided in sequence. It should be noted that, the through-flow channel 434 may be a hollow structure disposed on the oil baffle 432, or may be a channel formed between the lower end of the oil baffle 432 and the bottom surface of the bin 431, and the overflow channel 435 may be a hollow structure disposed on the baffle 433, or may be a channel between the baffle 433 and the top surface of the bin 431.

The working process and principle of the sedimentation tank 430 are illustrated by taking fig. 20 as an example, the cleaning agent firstly enters the first sedimentation chamber 4361, in the first sedimentation chamber 4361, the particulate matters with the specific gravity greater than that of the cleaning agent sink to the bottom, the lipid matters with the specific gravity smaller than that of the cleaning agent float to the liquid level surface, the oil baffle 432 between the first sedimentation chamber 4361 and the second sedimentation chamber 4362 is higher than the liquid level, so that the lipid matters at the upper layer in the first sedimentation chamber 4361 cannot enter the second sedimentation chamber 4362, the cleaning agent at the middle layer can enter the second sedimentation chamber 4362 through the through-flow channel 434 below the oil baffle 432, the part of the flow baffle 433 opposite to the through-flow channel 434 is of a solid structure, and part of the high-specific gravity particulate matters at the lower layer can be entrained in the cleaning agent entering the second sedimentation chamber 4362, and can slowly climb along with the flow baffle 433 after being blocked by the flow baffle 433 due to the high specific gravity of the self; similarly, in the second sedimentation chamber 4362, the particulate matters with the specific gravity greater than that of the cleaning agent sink to the bottom, the lipid matters with the specific gravity less than that of the cleaning agent float upwards to the liquid level surface, and the oil baffle 432 between the second sedimentation chamber 4362 and the third sedimentation chamber 4363 is higher than the liquid level, so that the lipid matters at the upper layer in the second sedimentation chamber 4362 cannot enter the third sedimentation chamber 4363, the cleaning agent at the middle layer can enter the third sedimentation chamber 4363 through the flow passage 434 below the oil baffle 432, and after a part of the particulate matters are wrapped and entrained in the cleaning agent entering the second sedimentation chamber 4362 and blocked by the baffle 433, the cleaning agent slowly climbs along with the baffle 433 and finally overflows through the baffle 433 from the overflow passage 435; in the first sedimentation chamber 4361, most of the heavy particulate matters and the heavy lipid matters can be separated, the particulate matters and the lipid matters separated in the second sedimentation chamber 4362 and the third sedimentation chamber 4363 are less and less, and the cleaning agent in the middle layer of the third sedimentation chamber 4363 is recovered. It should be noted that, if the lipid material in the final sedimentation chamber can not be separated almost, it is conceivable to directly recover the cleaning agent by providing an overflow port or weir at the liquid surface, or to provide a water outlet baffle 438 similar to the oil baffle 432 to further block the lipid material in the third sedimentation chamber 4363, and then provide an overflow port and weir to recover the cleaning agent; if a certain amount of lipid substances can be separated from the sedimentation bin of the last stage, the lipid substances can be considered to be directly inserted into the cleaning agent in the middle layer through a pipeline, and the cleaning agent is pumped and recovered through a suction pump.

In an alternative embodiment, as shown in fig. 19 and 20, a heating module 437 is also disposed within the settling tank 430. The heating module 437 is preferably arranged in the sedimentation bin of the last stage, heats the cleaning agent, can accelerate layering of liquid in the sedimentation tank 430 in a heating mode, improves the recovery efficiency of the cleaning agent, and meanwhile, the cleaning agent with increased temperature can improve the saponification and emulsification reaction rates, reduce the surface tension and reduce the viscosity of the resin, so that the resin is easier to separate from the surface of a member to be cleaned, and the cleaning difficulty of the resin is greatly reduced.

In an alternative embodiment, the cleaning agent recovery module 400 further includes a secondary filtering module 440, the secondary filtering module 440 is configured to perform secondary filtering on the cleaning agent after primary filtering, the filtering precision of the secondary filtering is smaller than that of the primary filtering, and the secondary filtering module 440 is preferably disposed between the solidification tank 410 and the sedimentation tank 430, so that the cleaning agent flowing out of the solidification tank 410 can flow into the secondary filtering module 440 by gravity. Preferably, the cleaning agent recovery module 400 further includes a tertiary filtration module 450, the tertiary filtration module 450 is configured to perform tertiary filtration on the cleaning agent after secondary filtration, the filtration precision of the tertiary filtration is smaller than that of the secondary filtration, the tertiary filtration module 450 is preferably disposed in the sedimentation tank 430, and may specifically be disposed at the upper portion of the first sedimentation chamber 4361, so that the cleaning agent flowing out of the secondary filtration module 440 may flow into the tertiary filtration module 450 by gravity, and the cleaning agent in the tertiary filtration module 450 may flow into the first sedimentation chamber 4361 by gravity.

In an alternative embodiment, as shown in fig. 16 and 20, the cleaning agent recovery module 400 further includes a cloth bag filter 460, the cloth bag filter 460 being configured to filter the settled cleaning agent with a high efficiency. The inlet of the cloth bag filter 460 is connected with the outlet of the sedimentation tank 430, and the cleaning agent flowing out of the outlet of the cloth bag filter 460 can be pumped into the sedimentation tank 430 for standby through the diaphragm pump 470, and can also be pumped into the cleaning bin 132 through the diaphragm pump 470 for direct utilization.

It should be noted that, the cleaning agent recovery method implemented by the cleaning agent recovery module is the method related to the foregoing cleaning agent recovery method embodiment, and the detailed description thereof will be omitted herein.

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

Experimental example 1 (cleaning ability test of recovered cleaning agent)

And (3) performing photo-curing 3D printing on a black technology Model HP 2.0Gray photosensitive resin (the main component is acrylic resin) by using a black technology UltraCraft A2D device to obtain a structural member serving as a cleaning object. Different cleaning grades are formulated according to the final cleaning effect:

The cleaning grade 4 shows that the cleaning is clean, the surface has no reflection, the sample piece has no adhesion to hands, and details, pits and pipelines have no resin residues;

the cleaning grade 3 shows that no resin residue exists on the outer surface, only slight reflection exists, the surface is slightly sticky, and trace resin exists in the detail part, so that the application requirement can be met;

the cleaning grade 2 indicates that most of the resin on the outer surface is removed, the surface is sticky, and more resin remains in the detail part;

cleaning grade 1 indicates that thicker resin can be accumulated on the foot surface, a layer of resin with thinner surface is left, and a large amount of resin is left in detail;

a cleaning grade of 0 indicates no significant cleaning effect and the resin was not removed effectively.

In the embodiment, a plurality of printing parts are cleaned by selecting a water-based cleaning agent A, the resin content of the cleaned cleaning agent is about 3%, and the cleaned cleaning agent is respectively treated as follows:

(1) Sequentially adopting the photo-curing treatment and sedimentation treatment in the embodiment of the application, and recovering to obtain a cleaning agent B;

(2) The photocuring treatment and the strong filtration of the bag filter 460 in the embodiment of the application are sequentially adopted, and the cleaning agent C is recovered and obtained;

(3) Directly adopts photo-curing treatment, does not use adsorbable filter materials, and recovers and obtains the cleaning agent D.

And respectively adopting a cleaning agent A, a cleaning agent B, a cleaning agent C and a cleaning agent D to ultrasonically clean the structural part of the printer for 3MIN, taking out, cleaning with alcohol for 2MIN, drying with an air gun, and curing to obtain cleaning grades of 4, 3, 4 and 2.

It can be seen that the cleaning agent recovered by directly performing the photo-curing treatment without using the adsorbable filter material cannot meet the application cleaning requirement, and the cleaning agent recovered by the method according to the embodiment of the application can meet the application cleaning requirement, and even approaches 100% to recover the cleaning capability of the cleaning agent.

Experimental example 1 (verification of recovery rate of cleaning agent and precipitate)

Selecting a water-based cleaning agent A to clean a plurality of printing parts, wherein the content of resin in the cleaned cleaning agent is about 1%, and performing the following treatment on the cleaned cleaning agent: sequentially adopting the photo-curing treatment and sedimentation treatment in the embodiment of the application, recovering to obtain a cleaning agent B, and recording the recovery weight; performing strong filtration on the cleaning agent B by adopting a cloth bag type filter 460, recovering to obtain a cleaning agent C and recording the weight; the sewage was rated by taking the cleaning agent B and the cleaning agent C simultaneously, and the results are shown in Table 3 below.

TABLE 3 Table 3

As can be seen from table 3, the cleaning agent recovered by the method of the embodiment of the present application has stable recovery efficiency and less loss.

In an alternative embodiment, as shown in fig. 2 and 16, the cleaning agent recovery module 400 may be disposed in the cabinet 310 of the electrical treatment unit 300, that is, the strong current module 320 and the cleaning agent recovery module 400 are both disposed in the cabinet 310, thereby simplifying the structural units of the system, and in order to achieve water-electricity separation, the strong current module 320 is isolated from the cleaning agent recovery module 400 by the partition 330.

The embodiment of the application also correspondingly protects a cleaning method, which is realized by the cleaning equipment provided by the embodiment of the application, wherein the cleaning equipment is provided with a plurality of cleaning modules, and the cleaning method comprises the following steps: after one cleaning module cleans the target object, the cleaning agent carried on the target object is dried, and then the target object is conveyed to the next cleaning module for cleaning and drying until all the cleaning modules clean and dry the target object. When the multistage cleaning is finished, the cleaning agent carried on the target object can be dried firstly after the previous stage cleaning is finished, and then enters the next stage cleaning station, so that the multistage cleaning device can realize repeated cleaning and drying, avoid the previous stage cleaning agent from polluting the next stage cleaning agent, reduce the use of the cleaning agent and be beneficial to safe production management. In the case where the cleaning apparatus includes a solvent recovery module, the cleaning method further includes the cleaning agent recovery method in the foregoing embodiment of the present application, for example, the cleaning method may include: performing light curing treatment on the cleaning agent containing resin impurities, lifting the local concentration of the resin impurities in the cleaning agent by using an adsorptive filter material in the light curing treatment process, and performing primary filtration on the cleaning agent by using the adsorptive filter material; and carrying out sedimentation treatment on the cleaning agent, so that impurities with specific gravity greater than that of the cleaning agent are settled below the cleaning agent, and impurities with specific gravity less than that of the cleaning agent float above the cleaning agent, and the cleaning agent in the middle layer is recovered. For another example, the cleaning method may further include: after the step of settling the cleaning agent, the recovered cleaning agent in the middle layer is introduced into a cloth bag type filter for strong filtration. Because the cleaning method is implemented based on the cleaning device in the embodiment of the present application, the specific details of the cleaning device in the embodiment of the present application are included in the specific implementation of the cleaning method, and are not described herein again. Because the cleaning method is implemented by the cleaning equipment provided by the embodiment of the application, specific technical feature description and corresponding technical effects of the cleaning method are described in detail with reference to the product implementation mode, and are not repeated here.

In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the present application. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A cleaning module, comprising:

a cleaning bin configured to store a cleaning agent and clean a target object;

the first lifting assembly is configured to drive the target object to move in the up-and-down direction so that the target object enters or leaves the cleaning bin, and the first lifting assembly is provided with a cleaning position and a drying position in the up-and-down movement process of the target object, wherein the drying position is higher than the cleaning position;

a blow-dry assembly configured to disperse a cleaning agent on the target object located at the blow-dry location by an air flow.

2. The cleaning module of claim 1, wherein the first lift assembly comprises a first drive and a first pallet assembly, the first drive configured to drive the first pallet assembly to reciprocate in a vertical direction.

3. The cleaning module of claim 2, wherein the cleaning module is configured to clean the cleaning module,

the first driving piece comprises a three-position five-way electromagnetic valve and an air cylinder which are connected with each other; or (b)

The first driving piece comprises an intrinsic safety type motor and a synchronous belt which are connected with each other; or (b)

The first driving piece comprises an intrinsic safety type motor and a screw rod assembly which are connected with each other.

4. The cleaning module of claim 2, wherein the first pallet assembly includes a carrier portion for directly carrying the target and a first connecting portion for connecting the carrier portion with the moving portion of the first drive member, the first lifting assembly further including a vertically extending first rail, the first connecting portion being in sliding engagement with the first rail.

5. The cleaning module of claim 4, wherein the carrier portion is a frame structure with a hollowed-out middle portion.

6. The cleaning module of claim 1, wherein the blow-dry assembly comprises a second drive configured to drive the nozzle to reciprocate in a horizontal direction and a nozzle configured to spray an air stream against the target.

7. The cleaning module of claim 6, wherein the blow-drying assembly further comprises a second connection portion and a horizontally extending second rail, the nozzle being connected to the movable portion of the second drive member by the second connection portion, the second connection portion being in sliding engagement with the second rail.

8. The cleaning module of claim 2, wherein the cleaning bin comprises a bin gate having a slit formed at an edge thereof.

9. The cleaning module of claim 8, wherein the bin gate is an elastic gate, the elastic gate always has a tendency to close the cleaning bin under the action of self elastic force, the first pallet assembly comprises a bearing part for directly bearing the target object, a roller is arranged on the bearing part, the rotation axis of the roller is parallel to the rotation axis of the elastic gate, and the roller protrudes out of the bottom surface of the bearing part.

10. The cleaning module according to claim 1, characterized in that the bottom of the cleaning bin is provided with ultrasonic generating means and/or liquid disturbing means.

11. The cleaning module of claim 10, wherein the liquid perturbation device is a bubbling device, a vortex generating device, an oscillating device, or a stirring device.

12. The cleaning module of claim 10, wherein the bottom of the cleaning bin is further provided with a heat sink bin.

13. The cleaning module of any one of claims 1-12, wherein the cleaning module is provided in plurality.

14. A cleaning apparatus, comprising:

a host unit comprising a frame, a loading and unloading module and a cleaning module as claimed in any one of claims 1 to 13, wherein a pneumatically driven execution unit is arranged in the host unit, and a plurality of stations are arranged on the frame; the feeding and discharging module is provided with at least one and is configured to feed or discharge a target object; the cleaning module is provided with a plurality of cleaning modules and is configured to clean the target object; the pneumatically driven execution unit is configured to perform a preset action on a target object;

15. The cleaning apparatus of claim 14, further comprising a cleaning agent recovery module, the cleaning agent recovery module comprising:

a solidification pond, in which an adsorptive filter material is arranged, wherein the adsorptive filter material is configured to raise the local concentration of resin impurities in the cleaning agent and perform primary filtration on the cleaning agent;

16. The cleaning apparatus defined in claim 14, further comprising:

and an organic solvent monitoring unit configured to detect the concentration of the organic solvent in the environment and to shut down and/or cut off the total power supply in case the concentration of the organic solvent exceeds a safety threshold.

17. A cleaning method, carried out by a cleaning apparatus according to any one of claims 14-16, provided with a plurality of cleaning modules, comprising: after one cleaning module cleans the target object, the cleaning agent carried on the target object is dried, and then the target object is conveyed to the next cleaning module for cleaning and drying until all the cleaning modules clean and dry the target object.