Cleaning device for 3D printing equipment and multi-material 3D printing equipment

Abstract

The utility model belongs to the technical field of printing, and relates to a cleaning device for 3D printing equipment and multi-material 3D printing equipment, the cleaning device comprises a body, a flushing part, a liquid inlet assembly and a liquid outlet assembly, the top of the body is concavely provided with a cleaning tank; the flushing part is divided into a flushing area for cleaning a target object; a plurality of flushing holes arranged in an array are formed in the flushing area of the flushing part; a closed liquid inlet cavity is formed between the flushing part and the body in the cleaning tank; and the liquid inlet cavity is communicated with the cleaning tank through the flushing hole. The liquid inlet assembly is provided with a liquid inlet channel communicated with the liquid inlet cavity and used for supplying cleaning liquid to the liquid inlet cavity through the liquid inlet channel. The liquid outlet assembly is provided with a liquid outlet channel communicated with the cleaning tank and used for discharging liquid in the cleaning tank out of the cleaning tank. According to the cleaning device disclosed by the utility model, the target object is flushed in all directions with impact force through the flushing holes which are arranged in an array, so that the target object can be cleaned more quickly and more thoroughly, the probability of cross contamination of printing materials is reduced, and the printing quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to a cleaning device for 3D printing equipment and a multi-material 3D printing equipment. Background Technology

[0002] 3D printing, also known as additive manufacturing, is a type of rapid prototyping technology. It's a technique that uses digital model files as a basis to construct physical objects by printing target materials layer by layer. Taking photopolymer 3D printing as an example, this technology uses liquid resin as the material and computer-controlled ultraviolet light or lasers to solidify the liquid material into a three-dimensional model. It boasts numerous advantages, including fast printing speed, high precision, excellent surface quality, and wide material application, making it one of the fastest-growing and most commercially successful 3D printing technologies. It is now widely used in product prototype manufacturing, performance testing, and design verification in fields such as mold making, automotive, home appliances, medical, dental, jewelry, and other industries, significantly improving the speed of new product development and reducing development costs.

[0003] With the development of 3D printing technology, current 3D printing equipment can utilize various materials to print products with more complex structures or better performance. To achieve multi-material printing, existing photopolymer 3D printing equipment requires switching between different materials. To avoid confusion between different printing materials, leading to cross-contamination and affecting print quality, photopolymer 3D printing equipment for multi-material printing is generally equipped with cleaning or rinsing mechanisms. However, the inventors discovered during actual research and development and practical experience that even with cleaning mechanisms, cross-contamination of printing materials is still likely to occur, resulting in poor cleaning quality. Utility Model Content

[0004] The purpose of this utility model embodiment is to solve the technical problem of poor cleaning quality of semi-finished products or products from existing 3D printing equipment after cleaning by a cleaning mechanism.

[0005] To solve the above-mentioned technical problems, this utility model provides a cleaning device for 3D printing equipment, which adopts the following technical solution:

[0006] The cleaning device for the 3D printing equipment includes:

[0007] The main body has a cleaning groove recessed at the top;

[0008] The rinsing component is divided into rinsing zones for cleaning the target object; the rinsing component has multiple rinsing holes arranged in an array within the rinsing zones; a sealed liquid inlet chamber is formed between the rinsing component and the main body within the cleaning tank; the liquid inlet chamber communicates with the cleaning tank through the rinsing holes.

[0009] The liquid inlet assembly has a liquid inlet channel communicating with the liquid inlet chamber, for supplying cleaning fluid to the liquid inlet chamber through the liquid inlet channel;

[0010] The liquid discharge assembly has a liquid discharge channel communicating with the cleaning tank for discharging liquid from the cleaning tank.

[0011] In some embodiments of this utility model, when the target object is cleaned in the cleaning tank, the orthographic projection of the target object on the rinsing member is located within the rinsing area.

[0012] In some embodiments of this invention, the coverage area of ​​the liquid inlet chamber is larger than the area of ​​the rinsing zone.

[0013] In some embodiments of this utility model, each of the flushing holes forms a flushing channel, and the flushing channel has a communicating inlet and outlet;

[0014] One end of the inlet is connected to the liquid inlet chamber, and the other end is connected to the nozzle;

[0015] When the target object is cleaned in the cleaning tank, the cleaning liquid in the inlet chamber is sprayed out from the nozzle to the target object through the inlet to clean the target object.

[0016] In some embodiments of this utility model, the size of the inlet of each of the flushing holes gradually decreases along the flow direction of the cleaning fluid in the flushing channel;

[0017] And / or, the size of the nozzle of each of the flushing holes gradually decreases along the flow direction of the cleaning fluid in the flushing channel.

[0018] In some embodiments of this utility model, the side of the rinsing member facing the bottom of the cleaning tank of the body is provided with a recessed cavity;

[0019] When the rinsing component is installed at the bottom of the cleaning tank, the bottom and wall of the concave cavity together with the bottom of the cleaning tank form the liquid inlet cavity.

[0020] In some embodiments of this utility model, the flushing hole is formed at the bottom of the concave cavity; the area of ​​the bottom of the concave cavity is larger than the area of ​​the flushing area.

[0021] In some embodiments of this utility model, the liquid inlet assembly is disposed on the flushing member, and the liquid inlet channel of the liquid inlet assembly communicates with the concave cavity;

[0022] And / or, one of the bottom of the rinsing component and the bottom of the cleaning tank is provided with a positioning element, and the other is provided with a positioning groove, wherein when the rinsing component is installed on the body, the positioning element is inserted into the positioning groove.

[0023] To address the aforementioned technical problems, this utility model embodiment also provides a multi-material 3D printing device, employing the following technical solution:

[0024] The multi-material 3D printing equipment includes:

[0025] The base is equipped with multiple liquid tanks; at least two adjacent liquid tanks are used to hold different printing materials.

[0026] A printing platform, used to hold the target printed object; and

[0027] The cleaning device for the above-mentioned 3D printing equipment has a cleaning tank located between two adjacent liquid tanks used to hold different printing materials.

[0028] The cleaning device is used to rinse the target printed object and the printing material on the printing platform with cleaning fluid sprayed from the rinsing hole when the printing platform carries the target printed object to the corresponding position of the rinsing area in the cleaning tank; the target printed object is the semi-finished printed product of the target object of the cleaning device.

[0029] In some embodiments of this utility model, the multi-material 3D printing equipment is a photopolymerization printing equipment.

[0030] Compared with the prior art, the cleaning device for 3D printing equipment and the multi-material 3D printing equipment provided in this embodiment of the invention have the following advantages:

[0031] This 3D printing equipment uses a cleaning device that incorporates a rinsing component within a cleaning tank. This component forms a sealed liquid inlet chamber within the tank, and multiple arrayed rinsing holes connect the liquid inlet chamber and the cleaning tank within the rinsing area of ​​the rinsing component. When the liquid inlet assembly delivers cleaning fluid into the liquid inlet chamber, the fluid flows through the rinsing holes towards the target object located in the rinsing area, rinsing away any uncured printing material. The resulting mixture then flows directly into the cleaning tank and is discharged by the liquid outlet assembly. On one hand, this cleaning device provides comprehensive rinsing of the target object through the arrayed rinsing holes, significantly improving cleaning efficiency and effectiveness. On the other hand, the cleaning fluid exiting through the rinsing holes carries pressure, increasing the cleaning force and ensuring a more thorough cleaning, reducing the likelihood of cross-contamination of printing materials, and ultimately improving both cleaning performance and print quality. Attached Figure Description

[0032] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model or corresponding prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0033] Figure 1 This is a three-dimensional structural schematic diagram of a cleaning device for 3D printing equipment in one example of this utility model;

[0034] Figure 2 yes Figure 1 A three-dimensional cross-sectional view of a cleaning device for 3D printing equipment.

[0035] Figure 3 This is a partial planar sectional view of the rinsing component and the body of a cleaning device for 3D printing equipment in one example of this utility model. The figure shows the liquid flow relationship between a single rinsing hole and the liquid inlet chamber, as well as the optional structure of the rinsing hole.

[0036] Figure 4 yes Figure 1 3D exploded view of a cleaning device for 3D printing equipment;

[0037] Figure 5 This is a three-dimensional structural diagram of the pipeline connection between the rinsing component and the liquid inlet assembly of the cleaning device for 3D printing equipment in one example of this utility model.

[0038] Figure 6 yes Figure 5 A three-dimensional structural diagram of the piping connection between the rinsing components and the liquid inlet assembly of the cleaning device for 3D printing equipment from another perspective;

[0039] Figure 7 This is a three-dimensional structural diagram of a multi-material 3D printing device in one example of this utility model;

[0040] Figure 8 yes Figure 7 An exploded view of a multi-material 3D printing equipment.

[0041] The labels in the attached diagram are as follows:

[0042] 1000. Multi-material 3D printing equipment; 100. Cleaning device; 200. Base; 210. First liquid tank; 220. Second liquid tank; 300. Printing platform; 400. Optical engine;

[0043] 1. Body; 11. Cleaning tank; 12. Positioning components;

[0044] 2. Flushing component; 21. Flushing area; 22. Flushing hole; 221. Flushing channel; 2211. Inlet; 2212. Nozzle; 23. Cavity; 24. Positioning groove;

[0045] 3. Liquid inlet chamber;

[0046] 4. Liquid inlet assembly; 41. Liquid inlet channel; 42. Liquid inlet pipe; 421. Liquid outlet;

[0047] 5. Liquid dispensing assembly; 51. Liquid dispensing channel; 52. Liquid dispensing pipe; 53. Connector; 54. Anti-detachment knob. Detailed Implementation

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.

[0049] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0050] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.

[0051] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] This utility model embodiment provides a cleaning device 100 for 3D printing equipment. The cleaning device 100 is applicable to 3D printing equipment, specifically, to a multi-material 3D printing equipment 1000, and more specifically, to a photopolymerization multi-material 3D printing equipment 1000. Of course, the cleaning device 100 can also be applied to other suitable 3D printing equipment, which will not be listed here.

[0053] like Figure 1 , Figure 2 and Figure 4 As shown, the cleaning device 100 for 3D printing equipment includes a body 1, a rinsing component 2, a liquid inlet assembly 4, and a liquid outlet assembly 5. To clean the target object, a cleaning tank 11 is recessed at the top of the body 1, and the rinsing component 2 is divided into a rinsing area 21 for cleaning the target object. To achieve efficient removal of printing material from the target object, the rinsing component 2 has multiple arrayed rinsing holes 22 within the rinsing area 21. A sealed liquid inlet chamber 3 is formed between the rinsing component 2 and the body 1 within the cleaning tank 11; the liquid inlet chamber 3 communicates with the cleaning tank 11 through the rinsing holes 22. The liquid inlet assembly 4 has a liquid inlet channel 41 communicating with the liquid inlet chamber 3, and the liquid outlet assembly 5 has a liquid outlet channel 51 communicating with the cleaning tank 11. The liquid inlet assembly 4 can supply cleaning liquid to the liquid inlet chamber 3 through the liquid inlet channel 41, and the liquid outlet assembly 5 can discharge liquid from the cleaning tank 11.

[0054] Understandably, when the target object moves into the cleaning tank 11 and is located at the position corresponding to the rinsing area 21 of the rinsing component 2, the cleaning fluid delivered by the liquid inlet assembly 4 to the liquid inlet chamber 3 through the liquid inlet channel 41 can be flushed towards the target object at the top of the rinsing component 2 through the rinsing hole 22 to clean the uncured printing material on the target object. The mixture formed by the cleaning fluid rinsing the target object can directly enter the cleaning tank 11 and finally be discharged out of the cleaning tank 11 through the liquid outlet channel 51 of the liquid outlet assembly 5. In this way, by continuously delivering cleaning fluid into the liquid inlet chamber 3 through the liquid inlet assembly 4 and continuously discharging the mixture in the cleaning tank 11 through the liquid outlet assembly 5, the target object can be continuously cleaned in a cycle. This facilitates the rapid and thorough cleaning of the uncured printing material on the target object and ensures that when the target object enters the next process (such as immersing it in a liquid tank containing another printing material for continued printing) without any uncured printing material adhering to it, cross-contamination of different printing materials is less likely to occur, which is beneficial to improving printing quality. Alternatively, after the printed product is completed, ensure that no uncured printing material adheres to the target object, thereby ensuring the target object is clean and tidy, and reducing waste on the printed product and printing platform 300.

[0055] It should be noted that the target object described herein (not shown in the figures) may include the semi-finished product printed by the printing platform 300 and the printing equipment, or the target object described herein may include the finished product printed by the printing platform 300 and the printing equipment. Furthermore, the cleaning fluid described herein includes, but is not limited to, water or ethanol. The mixture described herein includes at least the cleaning fluid and the uncured printing material on the target object.

[0056] It should also be noted that, specifically in this embodiment, in order to discharge the mixture after cleaning the target object from the cleaning tank 11, as follows: Figure 1 and Figure 2 As shown, the liquid inlet assembly 4 includes a liquid inlet pipe 42, through which the liquid inlet assembly 4 can actively deliver cleaning fluid into the liquid inlet chamber. Correspondingly, the liquid outlet assembly 5 includes a liquid outlet pipe 52, a connector 53, and an anti-detachment knob 54. The liquid inlet pipe 42 is located on one side of the cleaning tank 11, and the liquid outlet pipe 52 is located on the other side of the cleaning tank 11 via the connector 53, so that liquid can enter from one side of the cleaning tank 11 and exit from the other side, thereby facilitating thorough rinsing of the target object and improving the cleaning effect. More specifically, the connector 53 is installed on the other side wall of the cleaning tank 11, and the liquid outlet pipe 52 is inserted into the connector 53 and fixedly installed on the connector 53 by the anti-detachment knob 54.

[0057] In addition, to improve the discharge efficiency of the mixed liquid in the cleaning tank 11, multiple discharge components 5 can be provided, that is, the mixed liquid in the cleaning tank can be discharged simultaneously through multiple discharge components 5.

[0058] In summary, compared with existing technologies, the cleaning device 100 for this 3D printing equipment has at least the following beneficial effects:

[0059] The cleaning device 100 for this 3D printing equipment uses a rinsing component 2 installed within a cleaning tank 11. A sealed liquid inlet chamber 3 is formed between the rinsing component 2 and the main body 1 within the cleaning tank 11. Multiple arrayed rinsing holes 22 are provided in the rinsing area 21 of the rinsing component 2, connecting the liquid inlet chamber 3 and the cleaning tank 11. When the liquid inlet assembly 4 delivers cleaning fluid into the liquid inlet chamber 3, the cleaning fluid in the liquid inlet chamber 3 can be flushed through the rinsing holes 22 towards the target object located in the rinsing area 21 to rinse the uncured printing material on the target object. The resulting mixture can directly enter the cleaning tank 11 and be discharged from the cleaning tank 11 by the liquid outlet assembly 5. On one hand, the cleaning device 100, through the arrayed rinsing holes 22, provides comprehensive rinsing of the target object, significantly improving the cleaning efficiency and effect. On the other hand, when the cleaning fluid of the cleaning device 100 is flushed out from the rinsing hole 22, it can have a certain pressure, which can increase the cleaning force on the target object, so as to clean the target object more thoroughly and improve the cleaning effect and printing quality.

[0060] To enable those skilled in the art to better understand the present invention, the following will be described in conjunction with the appendix. Figures 1 to 6 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0061] In some embodiments of this utility model, when the target object is cleaned in the cleaning tank 11, the orthographic projection of the target object on the rinsing member 2 is located within the rinsing area 21. That is, the entire target object being cleaned is located within the rinsing area 21. Thus, when cleaning the target object, the cleaning fluid flushed out by the rinsing holes 22 in the rinsing area 21 can rinse the target object from all directions. Furthermore, during the cleaning process, there is no need to frequently move the target object, which facilitates thorough cleaning of the target object, and the cleaning operation is simple and reliable.

[0062] In some embodiments of this invention, the coverage area of ​​the liquid inlet chamber 3 is larger than the area of ​​the rinsing area 21. That is, the rinsing area 21 is located within the area occupied by the liquid inlet chamber 3 in the cleaning tank 11. Thus, when the liquid inlet assembly 4 delivers cleaning fluid into the liquid inlet chamber 3, the cleaning fluid contained in the liquid inlet chamber 3 needs to be flushed out from the smaller area of ​​the rinsing area 21 into the cleaning tank 11. This allows the cleaning fluid flushed out of the liquid inlet chamber 3 through the rinsing hole 22 to accumulate greater pressure, which is beneficial for increasing the rinsing pressure of the cleaning fluid. This, in turn, helps to improve the cleaning effect on the target object and reduce the chance of cross-contamination of the printing materials.

[0063] It should be noted that the coverage area mentioned here refers to the area occupied by the liquid inlet chamber 3 at the bottom of the cleaning tank 11.

[0064] In some embodiments of this utility model, in order to flush the cleaning fluid to the target object through the flushing holes 22, each flushing hole 22 of the flushing member 2 is formed with a flushing channel 221, wherein, for example Figure 3 As shown, the rinsing channel 221 has a communicating inlet 2211 and a nozzle 2212. One end of the inlet 2211 communicates with the liquid inlet chamber 3, and the other end of the inlet 2211 communicates with the nozzle 2212. When the target object is cleaned in the cleaning tank 11, the cleaning fluid in the liquid inlet chamber 3 is sprayed from the nozzle 2212 through the inlet 2211 to the target object (see...). Figure 3 The arrows in the liquid inlet chamber 3 and the flushing channel 221 indicate the direction of the cleaning fluid flow, in order to clean the target object.

[0065] Understandably, the inlet 2211 of the flushing channel 221 is the liquid inlet of the flushing hole 22, and the nozzle 2212 of the flushing channel 221 is the liquid outlet of the flushing hole 22.

[0066] Optionally, to allow the cleaning fluid in the inlet chamber 3 to quickly enter each flushing hole 22, such as... Figure 3 As shown, the size of the inlet 2211 of each flushing hole 22 is along the direction of the liquid flow of the cleaning fluid in the flushing channel 221 (see...). Figure 3The direction of liquid flow (indicated by the arrows) in the middle flushing channel 221 gradually narrows. Understandably, the opening size of the inlet 2211 near the liquid inlet chamber 3 is larger than the opening size of the inlet 2211 near the target object, so that the cleaning fluid in the liquid inlet chamber 3 can be quickly guided to each flushing hole 22 through the inlet 2211.

[0067] And / or, optionally, to further increase the pressure of the cleaning fluid ejected from the nozzles 2212 within the rinsing channel 221, the size of the nozzles 2212 of each rinsing hole 22 gradually decreases along the flow direction of the cleaning fluid in the rinsing channel 221. Understandably, the opening size of the nozzle 2212 near the inlet 2211 is larger than the opening size of the nozzle 2212 near the target object, so that the cleaning fluid within the rinsing channel 221 is further concentrated and ejected through the nozzles 2212, allowing for a more thorough cleaning of the target object with a stronger impact force, thus improving the cleaning effect.

[0068] In some embodiments of this utility model, such as Figure 2 and Figure 6 As shown, to simplify the overall structure of the cleaning device 100, the side of the rinsing component 2 facing the bottom of the cleaning tank 11 of the main body 1 (specifically, the side facing away from the target object) is recessed with a cavity 23 (see Figure 1). Figure 6 When the rinsing component 2 is installed at the bottom of the cleaning tank 11, the bottom and wall of the cavity 23 together with the bottom of the cleaning tank 11 form the liquid inlet cavity 3 (see...). Figure 2 ).

[0069] And / or, in some embodiments of this utility model, such as Figure 2 As shown, in order to improve the installation reliability and positional accuracy of the rinsing component 2, a positioning component 12 is provided on one of the bottom of the rinsing component 2 and the bottom of the cleaning tank 11, and a positioning groove 24 is provided on the other. When the rinsing component 2 is installed on the body 1, the positioning component 12 is inserted into the positioning groove 24.

[0070] For example, such as Figure 2 As shown, a positioning groove 24 is provided at the bottom of the flushing component 2 (see figure). Figure 2 and Figure 6 Correspondingly, a positioning element 12 protrudes from the bottom of the cleaning tank 11 (see...). Figure 2 and Figure 4The bottom of the rinsing component 2 is recessed with a cavity 23, and a portion of the bottom of the cavity 23 is provided with multiple arrayed rinsing holes 22, so that the area of ​​the bottom of the cavity 23 is larger than the area of ​​the rinsing area 21. In this way, when the bottom of the rinsing component 2 is placed on the bottom of the cleaning tank 11 with its bottom facing the bottom of the tank, the liquid inlet cavity 3 is formed at the corresponding position of the cavity 23 between the rinsing component 2 and the bottom of the cleaning tank 11. The coverage area of ​​the liquid inlet cavity 3 is larger than the area occupied by the rinsing area 21. Overall, the cleaning device 100 has a simple and reliable structure, which is conducive to the subsequent disassembly, cleaning, and maintenance of the rinsing component 2, and can quickly and thoroughly clean the target object from all directions.

[0071] In some embodiments of this utility model, such as Figure 1 , Figure 2 , Figures 4 to 6 As shown, to simplify the installation structure of the cleaning device 100, the liquid inlet assembly 4 is disposed on the rinsing member 2, and the liquid inlet channel 41 of the liquid inlet assembly 4 communicates with the cavity 23. Specifically, the liquid inlet assembly 4 includes a liquid inlet pipe 42, wherein the liquid outlet 421 of the liquid inlet pipe 42 communicates with the liquid inlet chamber 3 (see Figure 2). Figure 6 The inlet end of the inlet pipe 42 is exposed outside the body 1. Understandably, the inlet pipe 42 of the inlet assembly 4 can be installed on the body 1 through the flushing component 2 and can be installed and removed together with the flushing component 2.

[0072] Based on the above-mentioned cleaning device 100 for 3D printing equipment, such as Figure 7 and Figure 8 As shown, this embodiment of the present invention also provides a multi-material 3D printing device 1000, which includes a base 200, a printing platform 300, and the aforementioned cleaning device 100 for 3D printing equipment. The base 200 is provided with multiple liquid tanks, at least two adjacent liquid tanks being used to hold different printing materials. The printing platform 300 is used to carry the target printed object. The cleaning tank 11 of the body 1 of the aforementioned cleaning device 100 for 3D printing equipment is located between two adjacent liquid tanks used to hold different printing materials. When the printing platform 300 carries the target printed object to the cleaning tank 11 and the corresponding position of the rinsing area 21 of the rinsing component 2, the cleaning device 100 can be used to rinse the target printed object (not shown) and the printing material on the printing platform 300 with cleaning fluid sprayed from the rinsing hole 22.

[0073] It should be noted that the target printed object (not shown in the figure) mentioned here is the semi-finished product of the target object printed by the cleaning device 100.

[0074] For example, such as Figure 7 and Figure 8As shown, one of two adjacent liquid tanks is designated as the first liquid tank 210, and the other as the second liquid tank 220. The printing material contained in the first liquid tank 210 is different from that contained in the second liquid tank 220. To simplify the printing operation and ensure the compact structure of the multi-material 3D printing equipment 1000, the first liquid tank 210, the cleaning tank 11, and the second liquid tank 220 can be arranged in a straight line. The multi-material 3D printing equipment 1000 may also include a moving mechanism (not shown). After the printing platform 300 completes printing in the first liquid tank 210, the printing platform 300 can move the printing semi-finished product to the cleaning tank 11 under the drive of the moving mechanism. When the printing semi-finished product enters the cleaning area 21 of the rinsing part 2, the cleaning device 100... The cleaning fluid delivered to the liquid inlet assembly 4 and the liquid inlet chamber 3 can be flushed upwards through the flushing hole 22 towards the printing semi-finished product and the printing platform 300. After the printing semi-finished product has completely entered the flushing zone 21, it can stop at the corresponding position in the flushing zone 21 and be flushed more thoroughly and comprehensively by the cleaning fluid flushed upwards from the flushing hole 22. After the printing semi-finished product and the printing platform 300 have been flushed, the moving mechanism can drive the printing platform 300 and the printing semi-finished product it carries to move into the second liquid tank 220 to continue the 3D printing of the printing material in the second liquid tank 220.

[0075] In summary, compared with existing technologies, this multi-material 3D printing equipment 1000 has at least the following beneficial effects:

[0076] The multi-material 3D printing equipment 1000 employs the aforementioned cleaning device 100 for 3D printing equipment. A cleaning tank 11 is set between at least two adjacent liquid tanks used to hold different printing materials. A rinsing component 2 is set in the cleaning tank 11 so that the rinsing component 2 and the bottom of the cleaning tank 11 together form a liquid inlet cavity 3. Multiple rinsing holes 22 are arranged in an array in the rinsing area 21 of the rinsing component 2, communicating with the liquid inlet cavity 3 and the cleaning tank 11. Thus, when the printing platform 300 carries the printed semi-finished product from the previous liquid tank to the rinsing area 21 of the cleaning tank 11, the cleaning liquid delivered by the liquid inlet component 4 to the liquid inlet cavity 3 can be flushed upwards from the rinsing holes 22 onto the printing platform 300 and the printed semi-finished product for rapid and all-round rinsing. After rinsing, the printing platform 300 can carry the printed semi-finished product from the cleaning tank 11 to the next liquid tank to continue 3D printing with another printing material.

[0077] Obviously, by using an array of flushing holes 22 to flush out the cleaning fluid with a certain impact force, the printing platform 300 and the printed semi-finished product can be flushed, ensuring that the printing platform 300 and the printed semi-finished product will not have any uncured previous printing material adhering to them before 3D printing with another printing material. This helps to reduce cross-contamination between the two different printing materials, thereby improving the printing effect.

[0078] Optionally, the multi-material 3D printing equipment 1000 can be a photopolymerization printing equipment. Of course, it can also be a multi-material 3D printing equipment 1000 that uses other methods to cure the printing material.

[0079] For example, such as Figure 7 and Figure 8 As shown, taking the multi-material 3D printing equipment 1000 as an example of a photopolymerization printing equipment, the multi-material 3D printing equipment 1000 also includes an optical engine 400, wherein the optical engine 400 is set at the bottom of the base 200 and is used to photopolymerize the printing material on the printing semi-finished products immersed in each liquid tank, so as to achieve layer-by-layer curing of the printing material, thereby finally realizing the 3D printing of the printed product.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A cleaning device for 3D printing equipment, characterized in that, The cleaning device for the 3D printing equipment includes: The main body has a cleaning groove recessed at the top; The rinsing component is divided into rinsing zones for cleaning the target object; the rinsing component has multiple rinsing holes arranged in an array within the rinsing zones; a sealed liquid inlet chamber is formed between the rinsing component and the main body within the cleaning tank; the liquid inlet chamber communicates with the cleaning tank through the rinsing holes. The liquid inlet assembly has a liquid inlet channel communicating with the liquid inlet chamber, for supplying cleaning fluid to the liquid inlet chamber through the liquid inlet channel; The liquid discharge assembly has a liquid discharge channel communicating with the cleaning tank for discharging liquid from the cleaning tank.

2. The cleaning device for 3D printing equipment according to claim 1, characterized in that, When the target object is cleaned in the cleaning tank, the orthographic projection of the target object on the rinsing component is located within the rinsing area.

3. The cleaning device for 3D printing equipment according to claim 1, characterized in that, The area covered by the liquid inlet chamber is larger than the area of ​​the rinsing zone.

4. The cleaning device for 3D printing equipment according to claim 1, characterized in that, Each of the flushing holes forms a flushing channel, and the flushing channel has a communicating inlet and outlet; One end of the inlet is connected to the liquid inlet chamber, and the other end is connected to the nozzle; When the target object is cleaned in the cleaning tank, the cleaning liquid in the inlet chamber is sprayed out from the nozzle to the target object through the inlet to clean the target object.

5. The cleaning device for 3D printing equipment according to claim 4, characterized in that, The size of the inlet of each of the flushing holes gradually decreases along the flow direction of the cleaning fluid in the flushing channel; And / or, the size of the nozzle of each of the flushing holes gradually decreases along the flow direction of the cleaning fluid in the flushing channel.

6. The cleaning device for 3D printing equipment according to claim 1, characterized in that, The rinsing component has a recessed cavity on the side facing the bottom of the cleaning tank of the body; When the rinsing component is installed at the bottom of the cleaning tank, the bottom and wall of the concave cavity together with the bottom of the cleaning tank form the liquid inlet cavity.

7. The cleaning device for 3D printing equipment according to claim 6, characterized in that, The flushing hole is located at the bottom of the concave cavity; the area of ​​the bottom of the concave cavity is larger than the area of ​​the flushing area.

8. The cleaning device for 3D printing equipment according to claim 6, characterized in that, The liquid inlet assembly is disposed on the flushing component, and the liquid inlet channel of the liquid inlet assembly communicates with the cavity; And / or, one of the bottom of the rinsing component and the bottom of the cleaning tank is provided with a positioning element, and the other is provided with a positioning groove, wherein when the rinsing component is installed on the body, the positioning element is inserted into the positioning groove.

9. A multi-material 3D printing device, characterized in that, The multi-material 3D printing equipment includes: The base is equipped with multiple liquid tanks; at least two adjacent liquid tanks are used to hold different printing materials. A printing platform, used to hold the target printed object; and The cleaning apparatus for 3D printing equipment according to any one of claims 1 to 8, wherein the cleaning tank of the main body is located between two adjacent liquid tanks for holding different printing materials; The cleaning device is used to rinse the target printed object and the printing material on the printing platform with cleaning fluid sprayed from the rinsing hole when the printing platform carries the target printed object to the corresponding position of the rinsing area in the cleaning tank; the target printed object is the semi-finished printed product of the target object of the cleaning device.

10. The multi-material 3D printing equipment according to claim 9, characterized in that, The multi-material 3D printing equipment is a photopolymerization printing equipment.

Images