Printing apparatus

Abstract

The utility model provides printing equipment which comprises a lifting platform, a printing device and a printing device, the lifting platform comprises a forming platform, and at least part of the forming platform comprises a net-shaped filtering structure; the medicine cylinder body comprises a medicine cylinder platform and a medicine cylinder configured to contain medicine liquid, the forming platform moves up and down in the medicine cylinder in the first direction, at least part of the medicine cylinder platform is hollow, at least part of the medicine cylinder penetrates through the hollow, and an ultrasonic device is arranged on the inner wall of the medicine cylinder; the scraper device is located on the medicine cylinder platform, the scraper device comprises a scraper and two opposite sliding parts, and the scraper is configured to move along the sliding parts. According to the printing equipment, bubbles in the liquid medicine can be eliminated in the whole 3D printing process, the quality of the liquid medicine in the curing process and the cleanliness of the liquid medicine are improved, and therefore high-quality 3D printing is achieved.

Description

Technical Field

[0001] This application relates primarily to the field of 3D printing, and more particularly to a printing device. Background Technology

[0002] In industrial 3D printing, the environment cannot be completely enclosed like in small-scale 3D printing equipment. During the entire process, the immersion of the printing platform in the printing liquid introduces air, causing bubbles in the liquid and resulting in defects in the printed product. In automated printing, a support column immerses the printing platform in the printing liquid in a tank for printing. After printing, the platform is removed from the tank. This frequent immersion and removal of the printing platform, due to its perforated mechanical design, introduces air with each immersion, creating bubbles that affect the quality of the printing liquid during curing and produce defects. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a printing device that can eliminate air bubbles in the liquid material throughout the 3D printing process, improve the quality and cleanliness of the liquid material during the curing process, thereby achieving high-quality 3D printing.

[0004] To address the aforementioned technical problems, this application provides a printing device, comprising: a lifting platform, the lifting platform including a forming platform, wherein at least a portion of the forming platform includes a mesh filter structure; a medicine cylinder body, the medicine cylinder body including a medicine cylinder platform and a medicine cylinder configured to hold liquid medicine, the forming platform moving up and down within the medicine cylinder in a first direction, at least a portion of the medicine cylinder platform being hollow, at least a portion of the medicine cylinder passing through the hollow, wherein an ultrasonic device is provided on the inner wall of the medicine cylinder; and a scraper device located on the medicine cylinder platform, the scraper device including a scraper and two opposing sliding parts, the scraper being configured to move along the sliding parts.

[0005] Optionally, the lifting platform also includes a support back plate placed along the first direction. One side of the support back plate includes a drive device, and the forming platform is located below the drive device. The drive device is configured to drive the forming platform to move up and down in the medicine cylinder along the first direction. The other side of the support back plate also includes a fixing plate, which is mounted on the medicine cylinder platform.

[0006] Optionally, the molding platform includes a mother molding platform and a daughter molding platform located above the mother molding platform. The mesh filter structure is located on the mother molding platform. The two sides of the mother molding platform extending outward from the lifting platform include a first connecting part and a second connecting part. The side of the mother molding platform near the lifting platform includes a third connecting part. The driving device includes a first connecting column, a second connecting column, and a third connecting column. The first connecting column is fixedly connected to the first connecting part, the second connecting column is fixedly connected to the second connecting part, and the third connecting column is fixedly connected to the third connecting part.

[0007] Optionally, the driving device of the lifting platform includes multiple slide rails fixed to the support back plate, multiple sliding connecting parts connected to the slide rails and moving up and down relative to the slide rails in a first direction, and a sliding connecting plate located between the sliding connecting parts and connected to the sliding connecting parts, wherein the first connecting column and the second connecting column are fixedly connected to the sliding connecting parts, and the third connecting column is fixedly connected to the sliding connecting plate.

[0008] Optionally, the drive unit includes a drive motor and a first coupling, the first coupling being fixedly connected to the forming platform.

[0009] Optionally, the scraper device further includes a first connector, which includes two opposing first support portions, a first support plate located at the lower end of the two first support portions, a first support rod located between the two first support portions and fixedly connected to the first support portions, a first conveyor belt pulley, and a drive pulley, wherein the first support rod is fixedly connected to the first conveyor belt pulley and the first drive pulley.

[0010] Optionally, the scraper device further includes a plurality of second connectors, each of which includes two opposing second supports, a second support plate located at the lower end of the two second supports, a second support rod located between the two second supports and fixedly connected to the second supports, and a second conveyor belt pulley, wherein the second support rod is fixedly connected to the second conveyor belt pulley.

[0011] Optionally, the scraper device further includes a pulley drive mechanism, which includes a drive rod and a drive section, with the drive rod located inside the drive section and at least a portion of the drive rod extending out of the drive section.

[0012] Optionally, the scraper device further includes a first conveyor belt, a second conveyor belt, and a third conveyor belt, wherein the first conveyor belt is located between the first connector and one of the second connectors, wherein one end of the first conveyor belt is fitted onto the first conveyor belt pulley of the first connector, and the other end of the first conveyor belt is fitted onto the second conveyor belt pulley of the second connector; the second conveyor belt is located between the two second connectors, wherein both ends of the second conveyor belt are respectively fitted onto the second conveyor belt pulleys of the second connectors; the third conveyor belt is located between the pulley drive mechanism and the first connector, wherein one end of the third conveyor belt is fitted onto the portion of the drive rod extending out of the drive part, and the other end of the third conveyor belt is fitted onto the drive pulley of the first connector.

[0013] Optionally, the scraper device further includes a plurality of scraper rails, at least one scraper rail being located below the first conveyor belt and fixedly connected to the first connector and at least one second connector, and at least one scraper rail being located below the second conveyor belt and between the two second connectors.

[0014] Optionally, the scraper includes a scraper section and a first scraper connecting section and a second scraper connecting section located at both ends of the scraper section. The first scraper connecting section and the second scraper connecting section each include a first part and a second part. The second part includes a first side plate, a second side plate, and a third side plate located between the first side plate and the second side plate. The first side plate of the first scraper connecting section is connected to the first conveyor belt, and the first side plate of the second scraper connecting section is connected to the second conveyor belt. A slide rail connecting section that cooperates with the scraper slide rail is provided below the second side plate. The slide rail connecting section is configured to slide along the scraper slide rail following the conveyor belt. The third side plate is fixedly connected to the first part.

[0015] Optionally, the first part of the first scraper connection includes a negative pressure interface and an air extraction port, and the scraper device is connected to an external negative pressure device through the negative pressure interface.

[0016] Optionally, the mesh filter structure is hydrophobic.

[0017] Optionally, the mesh filter structure includes multiple pores, each pore ranging in size from 20 mesh to 80 mesh.

[0018] Compared to existing technologies, the printing equipment proposed in this application utilizes an ultrasonic device to break down large air bubbles formed when the lifting platform is immersed in the liquid medicine each time it enters the liquid medicine tank. Furthermore, a mesh filter structure with multiple holes is incorporated into the mother molding platform, allowing the liquid medicine to pass through while simultaneously blocking air bubbles. Additionally, the printing equipment includes a scraper device that smooths out any remaining liquid medicine after each application, and utilizes negative pressure and an air extraction port at the first scraper connection to remove air bubbles. This three-layered bubble-eliminating structure eliminates air bubbles in the liquid medicine throughout the 3D printing process, improving the quality and cleanliness of the liquid medicine during curing, thus achieving high-quality 3D printing. Attached Figure Description

[0019] The accompanying drawings are included to provide a further understanding of this application; they are incorporated into and constitute a part of this application. The drawings illustrate embodiments of this application and, together with this specification, serve to explain the principles of this application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a printing device according to one embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of a lifting platform of a printing device according to one embodiment of this application;

[0022] Figure 3 This is a partial structural schematic diagram of a mesh filter structure of a printing device according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of the main body of the medicine tank of a printing device according to one embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the structure of a scraper device of a printing apparatus according to an embodiment of this application;

[0025] Figure 6 This is a partial structural schematic diagram of a scraper device of a printing apparatus according to an embodiment of this application. Detailed Implementation

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0027] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In addition, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application's specification may have been chosen by the applicant according to his or her judgment, and their detailed meanings are explained in the relevant sections of this description. Moreover, this application should be understood not only through the actual terms used, but also through the meaning implied by each term.

[0032] This application refers to Figures 1-6 A printing device 10 is proposed, wherein, Figure 1 This is a schematic diagram of the overall structure of the printing device 10. Figure 2 This is a schematic diagram of the lifting platform of the printing device in printing device 10. Figure 3 A partial structural schematic diagram of the mesh filter structure included on the forming platform in the printing device 10 is shown. Figure 4 This is a schematic diagram of the main structure of the medicine vat of the printing device 10. Figure 5This is a schematic diagram of the scraper device of the printing equipment 10. Figure 6 A partial structural schematic diagram of the scraper device of the printing apparatus 10 is shown.

[0033] Reference Figure 1 The printing device 10 includes a lifting platform 11, a medicine tank body 12, and a scraper device 13. The various structures included in the printing device 10 will now be further described in conjunction with other accompanying drawings. First, for clearer reference... Figure 2 The lifting platform 11 of the printing device 10 includes a support back plate 21 placed along the first direction Y. One side of the support back plate 21 includes a drive device 22 and a forming platform 23 located below the drive device 22. The drive device 22 is configured to drive the forming platform 23 along the first direction Y in the medicine tank 41 (see reference). Figure 4 The back plate 21 can move up and down within the container. The other side of the support back plate 21 also includes a fixing plate 24, which is mounted on the medicine vat platform 42 (see reference). Figure 4 )superior.

[0034] Furthermore, refer to Figures 1-3 The molding platform 23 includes a mother molding platform 231 and a daughter molding platform 232 located above the mother molding platform 231. A mesh filter structure 233 is located on the mother molding platform 231. The two sides of the mother molding platform 231 extending outward from the lifting platform 11 include a first connecting portion 234 and a second connecting portion 235. The side of the mother molding platform 231 closest to the lifting platform 11 includes a third connecting portion 236 (see reference). Figure 1 The drive device 22 includes a first connecting post 237, a second connecting post 238 and a third connecting post 239, wherein the first connecting post 237 is fixedly connected to the first connecting part 234, the second connecting post 238 is fixedly connected to the second connecting part 235, and the third connecting post 239 is fixedly connected to the third connecting part 236.

[0035] On the other hand, the driving device 22 of the lifting platform 11 includes a plurality of slide rails 31 fixed on the support back plate 21, a plurality of sliding connecting parts 32 connected to the slide rails 31 and moving up and down relative to the slide rails 31 in the first direction Y, and a sliding connecting plate 33 located between the sliding connecting parts 32 and connected to the sliding connecting parts 32, wherein the first connecting column 237 and the second connecting column 238 are fixedly connected to the sliding connecting parts 32, and the third connecting column 239 is fixedly connected to the sliding connecting plate 33.

[0036] In this embodiment, the driving device 22 includes a drive motor 34 and a first coupling 35, which is fixedly connected to the molding platform 23. During the 3D printing process, the driving device 22 drives the sliding connection part 32 to move up and down along the slide rail 31. The sliding connection part 32 drives the sliding connection plate 33 to move up and down along the first direction Y. Since the first connecting column 237 and the second connecting column 238 are fixedly connected to the sliding connection part 32, and the third connecting column 239 is fixedly connected to the sliding connection plate 33, and the first connecting column 237, the second connecting column 238 and the third connecting column 239 are respectively fixedly connected to the first connecting part 234, the second connecting part 235 and the third connecting part 236 on the molding platform 23, the above structure can achieve the driving effect of the driving device 22 to move the molding platform 23 up and down.

[0037] Further reference Figure 3 A mesh filter structure 233 is provided on the mother molding platform 231. In this preferred embodiment, the mesh filter structure 233 can be made of hydrophobic metal or plastic material, and the mesh filter structure 233 includes multiple holes 36, each hole 36 having a size ranging from 20 mesh to 80 mesh, such as 20 mesh, 30 mesh, 40 mesh, 50 mesh, 60 mesh, 70 mesh, and 80 mesh. Through the hole structure 36 on the mesh filter structure 233, the liquid medicine is not blocked from entering the molding platform 23, while most of the air bubbles present in the liquid medicine are eliminated when the liquid medicine enters the molding platform 23, thereby eliminating most of the air bubbles entering the molding platform 23 and further improving the quality of the liquid medicine during the curing process.

[0038] Now combined Figure 1 as well as Figure 4 This section describes the main body 12 of the medicine container in the printing device 10. For more details, please refer to... Figure 4 The main body 12 of the medicine tank includes a medicine tank platform 42 and a medicine tank 41 for holding liquid medicine. The driving device 22 drives the forming platform 23 to move up and down in the medicine tank 41 along the first direction Y. In this embodiment, the middle area of ​​the medicine tank platform 42 is hollow S1, and the medicine tank 41 passes through the hollow S1. The inner wall of the medicine tank 41 is provided with an ultrasonic device 43.

[0039] In this embodiment, since air is introduced into the liquid each time the molding platform 23 is immersed in the liquid, forming large bubbles, an ultrasonic device 43 is installed on the inner wall of the liquid tank 41. The ultrasonic device 43 releases ultrasound each time the molding platform 23 is immersed in the liquid, breaking the large bubbles formed when the molding platform 23 is immersed in the liquid into small bubbles. The small bubbles can be further eliminated by the mesh filter structure 233, which can greatly improve the bubble elimination rate and further improve the quality of the liquid solidification.

[0040] We will continue to combine Figure 1 as well as Figures 5-6The scraper device 13 in the printing device 10 is described. The scraper device 13 is located on the medicine tank platform 42 and includes a scraper and two opposing sliding parts. The scraper is configured to move along the sliding parts.

[0041] A clearer reference Figure 5 The scraper device 13 includes a first connector 51, which includes two opposing first support portions 52, a first support plate 53 located at the lower end of the two first support portions 52, a first support rod 54 located between the two first support portions 52 and fixedly connected to the first support portions 52, a first conveyor belt pulley 55, and a first drive pulley 56. The first support rod 54 is fixedly connected to the first conveyor belt pulley 55 and the first drive pulley 56.

[0042] Continue to refer to Figure 5 The scraper device 13 also includes a plurality of second connectors 61. Each second connector 61 includes two opposing second support portions 62, a second support plate 63 located at the lower end of the two second support portions 62, a second support rod 64 located between the two second support portions 62 and fixedly connected to the second support portions 62, and a second conveyor belt pulley 65. The second support rod 64 is fixedly connected to the second conveyor belt pulley 65. The scraper device 13 also includes a pulley drive mechanism 66. The pulley drive mechanism 66 includes a drive rod 67 and a drive portion 68. The drive rod 67 is located inside the drive portion 68 and at least a portion of the drive rod 67 extends out of the drive portion 68.

[0043] Continue to refer to Figure 5 The scraper device 13 also includes a first conveyor belt 71, a second conveyor belt 72, and a third conveyor belt 73. The first conveyor belt 71 is located between the first connecting member 51 and one of the second connecting members 61. One end of the first conveyor belt 71 is fitted onto the first conveyor belt pulley 55 of the first connecting member 51, and the other end of the first conveyor belt 71 is fitted onto the second conveyor belt pulley 65 of the second connecting member 61. The second conveyor belt 72 is located between the two second connecting members 61, and both ends of the second conveyor belt 72 are respectively fitted onto the second conveyor belt pulley 65 of the second connecting member 61. The third conveyor belt 73 is located between the pulley drive mechanism 66 and the first connecting member 51, and one end of the third conveyor belt 73 is fitted onto the portion of the drive rod 67 extending out of the drive part 68, and the other end of the third conveyor belt 73 is fitted onto the first drive pulley 56 of the first connecting member 51.

[0044] Further, continue to refer to Figure 5 The sliding part of the scraper device 13 also includes two opposing scraper slide rails 74. In this embodiment, one scraper slide rail 74 is located below the first conveyor belt 71 and is fixedly connected to the first connector 51 and at least one second connector 61, while the other scraper slide rail 74 is located below the second conveyor belt 72 and is located between the two second connectors 61.

[0045] On the other hand, continue to refer to Figure 5 The scraper includes a scraper portion 81 and a first scraper connecting portion 82 and a second scraper connecting portion 83 located at both ends of the scraper portion 81. The first scraper connecting portion 82 and the second scraper connecting portion 83 each include a first part 84 and a second part 85. The second part 85 includes a first side plate 86, a second side plate 87, and a third side plate 88 located between the first side plate 86 and the second side plate 87. The first side plate 86 of the first scraper connecting portion 82 is connected to the first conveyor belt 71, and the first side plate 86 of the second scraper connecting portion 83 is connected to the second conveyor belt 72. A slide rail connecting portion 89 that cooperates with the scraper slide rail 74 is provided below the second side plate 87. The slide rail connecting portion 89 is configured to slide on the scraper slide rail 74 following the conveyor belt. The third side plate 88 is fixedly connected to the first part 84.

[0046] Through the aforementioned connection, when the pulley drive mechanism 66 drives the drive rod 67 to rotate, the third conveyor belt 73 will drive the first support rod 54 to rotate, thereby driving the first conveyor belt pulley 55 to rotate. When the first transmission belt pulley 55 rotates, it will drive the first conveyor belt 71 to rotate, thereby driving the opposite second conveyor belt pulley 65 to rotate. A connecting coupling 69 is included between the two second connecting members 61. The connecting coupling 69, driven by the second conveyor belt pulley 65, will drive the second conveyor belt pulley 65 of the other end of the second connecting member 61 to rotate, thereby driving the second conveyor belt 72 to rotate. The synchronous transmission of the first conveyor belt 71 and the second conveyor belt 72 enables the scraper section 81 and scraper slide rail 74 to move.

[0047] Furthermore, refer to Figure 6 The first part 84 of the first scraper connection 82 includes a negative pressure interface 91 and an air extraction port 92. The scraper device 13 is connected to an external negative pressure device (not shown) through the negative pressure interface 91. The scraper device 13 can smooth the liquid after each curing, and at the same time, the negative pressure provided by the first scraper connection 82 can completely eliminate air bubbles.

[0048] The printing device proposed in this application utilizes an ultrasonic device to break down large air bubbles formed when the lifting platform is immersed in the liquid medicine, reducing them to smaller bubbles each time the lifting platform enters the medicine tank. Furthermore, a mesh filter structure with multiple holes is incorporated into the master molding platform, allowing the liquid medicine to pass through while simultaneously blocking air bubbles. Additionally, the printing device includes a scraper device to smooth out any remaining liquid medicine after each application, and utilizes negative pressure by incorporating a negative pressure interface and an air extraction port at the first scraper connection point to remove air bubbles.

[0049] The printing equipment provided in this application can eliminate large air bubbles through an ultrasonic device, isolate small air bubbles through a mesh filter, and further eliminate all remaining air bubbles through negative pressure. The combined three-layer air bubble elimination structure can eliminate air bubbles in the printing solution throughout the 3D printing process, solving the product manufacturing defects caused by air bubbles in existing industrial applications, achieving continuous automated production, solving the problem of air damaging the printing effect of the printing solution during the plate changing process in existing automated processes, improving the quality and cleanliness of the printing solution during the curing process, and thus achieving high-quality 3D printing.

[0050] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0051] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0052] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0053] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of scope in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0054] Although this application has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, any changes or modifications to the above embodiments within the essential spirit of this application will fall within the scope of the claims of this application.

Claims

1. A printing device, characterized in that, include: A lifting platform, the lifting platform including a forming platform, wherein at least a portion of the forming platform includes a mesh filter structure; The main body of the medicine tank includes a medicine tank platform and a medicine tank configured to hold liquid medicine. The forming platform moves up and down in the medicine tank along a first direction. At least a portion of the medicine tank platform is hollow, and at least a portion of the medicine tank passes through the hollow. The inner wall of the medicine tank is provided with an ultrasonic device. A scraper device is located on the medicine cylinder platform. The scraper device includes a scraper and two opposing sliding parts, the scraper being configured to move along the sliding parts.

2. The printing device as described in claim 1, characterized in that, The lifting platform also includes a support back plate placed along the first direction. One side of the support back plate includes a driving device. The forming platform is located below the driving device. The driving device is configured to drive the forming platform to move up and down in the medicine cylinder along the first direction. The other side of the support back plate also includes a fixing plate, which is mounted on the medicine cylinder platform.

3. The printing device as described in claim 2, characterized in that, The molding platform includes a mother molding platform and a daughter molding platform located above the mother molding platform. The mesh filter structure is located on the mother molding platform. The mother molding platform has two sides extending outward from the lifting platform, each including a first connecting portion and a second connecting portion. The side of the mother molding platform closest to the lifting platform includes a third connecting portion. The driving device includes a first connecting column, a second connecting column, and a third connecting column. The first connecting post is fixedly connected to the first connecting part, the second connecting post is fixedly connected to the second connecting part, and the third connecting post is fixedly connected to the third connecting part.

4. The printing device as described in claim 3, characterized in that, The driving device of the lifting platform includes multiple slide rails fixed to the support back plate, multiple sliding connecting parts connected to the slide rails and moving up and down relative to the slide rails in a first direction, and a sliding connecting plate located between the sliding connecting parts and connected to the sliding connecting parts, wherein... The first connecting post and the second connecting post are fixedly connected to the sliding connecting part, and the third connecting post is fixedly connected to the sliding connecting plate.

5. The printing device as described in claim 2, characterized in that, The driving device includes a drive motor and a first coupling, which is fixedly connected to the forming platform.

6. The printing device as described in claim 1, characterized in that, The scraper device further includes a first connector, which includes two opposing first support portions, a first support plate located at the lower end of the two first support portions, a first support rod located between the two first support portions and fixedly connected to the first support portions, a first conveyor belt pulley, and a drive pulley. The first support rod is fixedly connected to the first conveyor belt pulley and the first drive pulley.

7. The printing device as described in claim 6, characterized in that, The scraper device further includes a plurality of second connecting members, each of which includes two opposing second support portions, a second support plate located at the lower end of the two second support portions, a second support rod located between the two second support portions and fixedly connected to the second support portions, and a second conveyor belt pulley, wherein the second support rod is fixedly connected to the second conveyor belt pulley.

8. The printing apparatus as described in claim 7, characterized in that, The scraper device further includes a pulley drive mechanism, which includes a drive rod and a drive section. The drive rod is located inside the drive section and at least a portion of the drive rod extends out of the drive section.

9. The printing apparatus as described in claim 8, characterized in that, The scraper device further includes a first conveyor belt, a second conveyor belt, and a third conveyor belt, wherein The first conveyor belt is located between the first connector and one of the second connectors, wherein one end of the first conveyor belt is sleeved on the first conveyor belt pulley of the first connector, and the other end of the first conveyor belt is sleeved on the second conveyor belt pulley of the second connector. The second conveyor belt is located between the two second connectors, wherein the two ends of the second conveyor belt are respectively sleeved on the second conveyor belt pulleys of the second connectors; The third conveyor belt is located between the pulley drive mechanism and the first connector, wherein one end of the third conveyor belt is sleeved on the portion of the drive rod that extends out of the drive part, and the other end of the third conveyor belt is sleeved on the drive pulley of the first connector.

10. The printing apparatus as described in claim 9, characterized in that, The scraper device further includes multiple scraper slide rails, at least one of the scraper slide rails being located below the first conveyor belt and fixedly connected to the first connector and at least one second connector, and at least one scraper slide rail being located below the second conveyor belt and between two second connectors.

11. The printing apparatus as claimed in claim 10, characterized in that, The scraper includes a scraper section and a first scraper connecting section and a second scraper connecting section located at both ends of the scraper section. Both the first scraper connecting section and the second scraper connecting section include a first part and a second part. The second part includes a first side plate, a second side plate, and a third side plate located between the first side plate and the second side plate. The first side plate of the first scraper connection part is connected to the first conveyor belt, and the first side plate of the second scraper connection part is connected to the second conveyor belt. A slide rail connection part that cooperates with the scraper slide rail is provided below the second side plate. The slide rail connection part is configured to slide along the scraper slide rail with the conveyor belt. The third side plate is fixedly connected to the first part.

12. The printing apparatus as claimed in claim 11, characterized in that, The first part of the first scraper connection includes a negative pressure interface and an air extraction port, and the scraper device is connected to an external negative pressure device through the negative pressure interface.

13. The printing apparatus according to any one of claims 1 to 12, characterized in that, The mesh filter structure is hydrophobic.

14. The printing apparatus as claimed in claim 13, characterized in that, The mesh filter structure includes multiple pores, each pore being between 20 mesh and 80 mesh in size.

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