3D printing rack and 3D printing equipment

Abstract

The utility model provides a 3D printing rack and 3D printing equipment, the 3D printing rack comprises a moving assembly, a connecting assembly and a base, the moving assembly comprises a first mounting seat, a transmission structure and a moving part, the transmission structure is connected to the first mounting seat, and the transmission structure is in transmission connection with the moving part and used for driving the moving part to move in the first direction; the connecting assembly is configured to be connected with the platform assembly; the base is configured to be connected with the tray assembly; wherein the moving part is configured to be detachably connected with any one of the connecting assembly and the base, and the first mounting seat is configured to be detachably connected with the other one of the connecting assembly and the base.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and more particularly to a 3D printer frame and 3D printing equipment. Background Technology

[0002] Photopolymer 3D printing equipment generally consists of a lifting device, a printing platform, and a material tray. Currently, most photopolymer 3D printing equipment on the market falls into two categories: one where the lifting device drives the printing platform to rise and fall, and the other where the lifting device drives the material tray to rise and fall. The lifting devices in both types of photopolymer 3D printing equipment can only be connected to either the printing platform or the material tray, resulting in an overly fixed printing mode that cannot meet the diverse market demands of current photopolymer 3D printing equipment. Utility Model Content

[0003] This application provides a 3D printer frame and 3D printing equipment to solve the problem of fixed printing modes of printing platforms in known technologies.

[0004] In a first aspect, this application provides a 3D printer frame, including a moving component, a connecting component, and a base. The moving component includes a first mounting base, a transmission structure, and a moving member. The transmission structure is connected to the first mounting base and drives the moving member to move along a first direction. The connecting component is configured to connect a platform assembly. The base is configured to connect a material tray assembly. The moving member is configured to be detachably connected to either the connecting component or the base, and the first mounting base is configured to be detachably connected to the other of the connecting component and the base.

[0005] In one possible implementation, both the first mounting base and the movable component are provided with a first connecting structure, and both the connecting component and the base are provided with a second connecting structure.

[0006] The first connecting structure of the movable component is detachably connected to the second connecting structure of either the connecting component or the base, and the first connecting structure of the first mounting base is detachably connected to the second connecting structure of the other of the connecting component and the base.

[0007] In one possible implementation, the first connection structure is a first connection hole provided on the first mounting base and the movable member, and the second connection structure is a second connection hole provided on the connection assembly and the base.

[0008] The 3D printer frame also includes fasteners that pass through the first connection hole and the second connection hole, and the fasteners are configured to thread into the first connection hole and the second connection hole.

[0009] In one possible implementation, the first mounting base and the movable member are further provided with a first positioning hole, and the connecting assembly and the base are further provided with a second positioning hole.

[0010] The 3D printer frame also includes a positioning element, which passes through the first positioning hole and the second positioning hole.

[0011] In one possible implementation, the transmission structure includes a transmission element and a transmission pair, wherein the transmission element is connected to the first mounting base;

[0012] The 3D printer frame also includes a drive assembly, which is tractively connected to the transmission member and provides driving force to the transmission member. The transmission member is tractively connected to the transmission pair. Based on the driving force, the transmission member drives the transmission pair to move along the first direction. The moving member is detachably connected to the transmission pair.

[0013] In one possible implementation, the number of the movable components is set to two, and the movable parts of the two movable components are detachably connected to one of the connecting component and the base, and the first mounting bases of the two movable components are detachably connected to the other of the connecting component and the base;

[0014] The 3D printer frame also includes a drive assembly, which is driveably connected to the transmission structure of the two moving components.

[0015] In one possible implementation, the connection component includes:

[0016] A support frame is detachably connected to the movable component or the first mounting base;

[0017] The movable component is movably connected to the support frame along the first direction;

[0018] The platform component is at least partially disposed between the support frame and the movable member and configured to be clamped.

[0019] In one possible implementation, the 3D printer frame further includes a limiting component disposed on the support frame or the movable member, the limiting component movably abutting against the platform component to limit the platform component at least in a second direction intersecting the first direction.

[0020] In one possible implementation, the 3D printer stand further includes an unlocking component movably connected to the support frame, the unlocking component being configured to resist the movable element moving toward a side away from the support frame.

[0021] Secondly, embodiments of this application also provide a 3D printing device, including a platform component, a tray component, and the aforementioned 3D printer frame. Along the first direction, the platform component and the tray component are spaced apart, and a moving component in the 3D printer frame is configured to drive one of the platform component and the tray component to move closer to or away from the other.

[0022] In one possible implementation, the platform assembly is configured to deposit and cure consumables into a printout, the platform assembly including a first platform and a second platform, the first platform and the second platform being configured to move relative to each other in a first direction for removing the printout formed on the platform assembly.

[0023] In one possible implementation, the 3D printing apparatus further includes a demolding structure that is drively connected to one of the first platform and the second platform, and along the first direction, the demolding structure is configured to drive one of the first platform and the second platform to move relative to the other.

[0024] In one possible implementation, the base has a mounting groove on the side near the platform assembly, and the tray assembly includes:

[0025] Release film is disposed within the mounting groove;

[0026] A material frame is connected to one end of the base near the platform assembly. The material frame is configured to press the release film onto the base. The material frame is arranged around the release film and the material frame and the release film together form a material groove.

[0027] In one possible implementation, the release film includes a film portion and a frame portion, the frame portion being disposed around the outer peripheral surface of the film portion, and the frame portion being integrally formed with the film portion;

[0028] The frame portion is clamped between the material frame and the base, and the membrane portion is formed by surrounding the inner peripheral wall of the material frame with the side surface of the platform assembly to form the material trough.

[0029] In one possible implementation, the tray assembly further includes a first pressure ring and a second pressure ring, which are spaced apart along the first direction, and the frame portion of the release film is clamped between the first pressure ring and the second pressure ring;

[0030] Along the first direction, the first pressure ring and the second pressure ring are clamped between the base and the material frame.

[0031] In one possible implementation, the sidewall of the platform assembly is provided with a limiting member, the limiting member having a limiting surface at one end facing the tray assembly, and the platform assembly having a forming surface at one end facing the tray assembly.

[0032] The first distance between the limiting surface and the end face of the material frame near the platform assembly is less than the second distance between the forming surface and the release film.

[0033] In one possible implementation, the tray assembly further includes:

[0034] A screen assembly is located within the mounting slot, and along the first direction, the screen assembly is disposed on the side of the release film away from the platform assembly;

[0035] A light source assembly is located within the mounting groove, and along the first direction, the light source assembly is spaced apart on the side of the screen assembly away from the release film.

[0036] In one possible implementation, the 3D printing equipment further includes a circuit assembly connected to the end of the base away from the platform assembly, the circuit assembly being electrically connected to the light source assembly and the screen assembly;

[0037] The base has a heat dissipation structure at the end away from the platform component, and the heat dissipation structure is arranged around the circuit component.

[0038] In one possible implementation, the light source assembly includes a plurality of light-emitting elements, and the plurality of light-emitting elements are distributed in an array.

[0039] In one possible implementation, the light source assembly further includes a first lens, which includes a lens base and a plurality of lens protrusions. The lens base is disposed on the light-emitting side of the light-emitting element, and the plurality of lens protrusions are distributed in an array on the side of the lens base away from the light-emitting element, and the plurality of lens protrusions are arranged in a one-to-one correspondence with the plurality of light-emitting elements.

[0040] In the 3D printer frame of this application, the movable component can be detachably connected to either the connecting component or the base, and the first mounting base can be detachably connected to the other of the connecting component and the base. This allows for selective connection of the movable component to either the connecting component or the base, enabling the platform component or the tray component to move via the movable component. This provides the 3D printer frame with two mounting methods, thus allowing the 3D printing equipment using this frame to have two different printing modes, increasing the versatility of the 3D printing equipment. Furthermore, when switching printing modes is required, simply invert the movable component and then install the platform component and tray component in the corresponding positions; there is no need to change the positions of the platform component and tray component, further improving the installation of the 3D printer frame. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the 3D printing device of this application in one embodiment.

[0042] Figure 2 for Figure 1 The diagram shows a 3D printing device in one embodiment, with the moving component in an inverted state.

[0043] Figure 3 This is a schematic diagram of the structure of the 3D printer frame of this application in one embodiment.

[0044] Figure 4 This is an exploded view of the 3D printer stand of this application in one embodiment.

[0045] Figure 5 for Figure 4 A magnified view of a portion of area A corresponding to the 3D printer stand.

[0046] Figure 6 This is an exploded view of another embodiment of the 3D printer stand of this application.

[0047] Figure 7 This is a schematic diagram of the platform component of the 3D printing device of this application in one embodiment.

[0048] Figure 8 This is a structural schematic diagram of the platform component of the 3D printing device of this application from another perspective in one embodiment.

[0049] Figure 9 This is an exploded view of the connection component of the 3D printing device of this application in one embodiment.

[0050] Figure 10 for Figure 7 A cross-sectional view of the platform components along the I-I direction.

[0051] Figure 11 This is an exploded view of the platform component of the 3D printing device of this application in one embodiment.

[0052] Figure 12 This is a bottom view of the platform component of the 3D printing device of this application in one embodiment.

[0053] Figure 13 for Figure 9 A schematic diagram of the structure of the first extension of the 3D printing equipment in one embodiment.

[0054] Figure 14 This is a schematic diagram of the 3D printing device of this application in another embodiment, wherein the 3D printing device is provided with a demolding structure.

[0055] Figure 15 This is an exploded view of the tray assembly in one embodiment of the 3D printing equipment of this application.

[0056] Figure 16 This is an exploded view of a portion of the material tray assembly in one embodiment of the 3D printing equipment of this application.

[0057] Figure 17 This is a cross-sectional schematic diagram of the tray assembly in one embodiment of the 3D printing equipment of this application.

[0058] Figure 18 for Figure 17 A magnified view of area B corresponding to the 3D printing equipment in the diagram.

[0059] Figure 19 This is a schematic diagram of the light source assembly in one embodiment of the 3D printing device of this application.

[0060] Figure 20 This is a schematic diagram showing the distribution of light-emitting elements in one embodiment of the 3D printing equipment of this application.

[0061] Figure 21 This is a layered schematic diagram of the light source assembly in one embodiment of the 3D printing device of this application.

[0062] Figure 22This is a schematic diagram of the circuit assembly installation of the 3D printing equipment according to one embodiment of this application. Key component symbols: 200, 3D printing equipment; 100, 3D printer frame; Z, first direction; Y, second direction; X, third direction; P1, step surface; P2, limiting surface; P3, first forming surface; P4, second forming surface; P5, forming surface; P6, first supporting wall; P7, second supporting wall; 1, first connecting structure; 101, first connecting hole; 102, first positioning hole; 2, second connecting structure; 201, second connecting hole; 202, second positioning hole; 3, first elastic element; 4, guide element; 4001, supporting part; 5, fastener; 6, positioning element; 7, first mounting hole; 8, second mounting hole; 9, bottom shell; 10, platform assembly; 11, first platform; 111. First main body; 1110, through hole; 112, first extension; 1121, first vertical part; 1122, first horizontal part; 1123, positioning groove; 1124, limiting groove; 1125, first demolding hole; 1126, second demolding hole; 113, limiting member; 114, movable cavity; 12, second platform; 121, second main body; 1210, protrusion; 122, second extension; 1221, second vertical part; 1222, second horizontal part; 1223, third demolding hole; 1224, fourth demolding hole; 13, demolding structure; 131, rotating handle; 132, first rotating shaft; 133, second rotating shaft; 14, gap; 20, connecting assembly; 21, support frame; 211 1. Mounting part; 212. Mounting protrusion; 213. First receiving groove; 214. Second receiving groove; 215. Support part; 22. Movable part; 221. First section; 2211. Support groove; 2212. First through hole; 2213. Second through hole; 222. Second section; 30. Moving assembly; 31. First mounting base; 32. Transmission structure; 321. Transmission component; 322. Transmission pair; 33. Movable part; 34. Second mounting base; 35. Guide shaft; 40. Material tray assembly; 401. Material trough; 402. Liquid level sensor; 403. Second sealing ring; 404. First sealing ring; 405. Connecting base; 41. Base; 410. Support protrusion; 411. Mounting groove; 412. Base plate ; 4120, Air outlet; 413, Heat dissipation cavity; 414, Heat dissipation fins; 415, Airflow channel; 416, Fan; 417, Wiring space; 42, Material frame; 421, Through cavity; 422, Supporting protrusion; 423, Second sealing groove; 424, Guide groove; 43, Release film; 431, Film part; 432, Frame part; 4320, First through hole; 44, Locking structure; 441, Rotating part; 442, Supporting part; 45, First pressure ring; 451, Second through hole; 452, Inclined groove; 453, Pressure ring part; 454, First holding protrusion; 46, Second pressure ring; 461, Connecting post; 462, Second holding protrusion; 47, Screen assembly; 471, Screen substrate; 472, Printing screen;4720, First conductive sheet; 473, Protective film; 48, Light source assembly; 481, Heat sink; 482, Lamp holder; 4820, Second conductive sheet; 483, Light-emitting element; 4831, First light-emitting group; 48310, First light-emitting element; 4832, Second light-emitting group; 48320, Second light-emitting element; 484, Second lens; 485, First lens; 4851, Lens base; 4852, Lens protrusion; 486, Light shield; 49, Heat sink; 491, Pressing protrusion; 4910, First sealing groove ; 492. Heat dissipation vent; 50. Unlocking component; 51. Unlocking part; 510. Rotating hole; 52. Rotating shaft; 60. Limiting component; 61. Second elastic element; 611. Connecting part; 612. Elastic part; 70. Frame; 71. Top plate; 710. Limiting protrusion; 72. Mounting plate; 73. Side plate; 74. Base plate; 80. Circuit assembly; 81. Circuit board; 82. Third conductive sheet; 90. Drive assembly; 91. Drive element; 92. Drive wheel; 93. Transmission wheel; 94. Transmission belt; 95. Tensioning structure.

[0063] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0064] The following description will refer to the accompanying drawings to provide a more complete picture of the present application. The drawings illustrate exemplary embodiments of the present application. However, the present application may be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components.

[0065] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the application. As used herein, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Furthermore, when used herein, “comprising” and / or “including” and / or “having,” integers, steps, operations, components, and / or components, but does not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components, and / or groups thereof.

[0066] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Furthermore, unless expressly defined herein, terms such as those defined in a general dictionary should be interpreted as having the same meaning as they have in the relevant art and in the content of this application, and will not be interpreted as having an idealized or overly formal meaning.

[0067] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0068] like Figure 1 and Figure 2 As shown, this application embodiment provides a 3D printing device 200, including a platform assembly 10, a material tray assembly 40, and a 3D printer frame 100. The platform assembly 10 and the material tray assembly 40 are spaced apart, and the moving component 30 in the 3D printer frame 100 is configured to drive one of the platform assembly 10 and the material tray assembly 40 toward or away from the other.

[0069] The 3D printing equipment 200 is used in the field of photopolymer 3D printing. The material tray assembly 40 stores photopolymer materials such as resin. The platform assembly 10 and the material tray assembly 40 can be brought close together to form a chamber for resin curing and molding, so that the resin is cured and molded on the platform assembly 10.

[0070] like Figures 1 to 3 As shown, this embodiment also provides a 3D printer frame 100, which is applied to the above-mentioned 3D printing equipment 200.

[0071] For ease of reading, this application introduces a first direction Z, a second direction Y, and a third direction X to describe the embodiments of this application. The first direction Z, the second direction Y, and the third direction X can be three non-parallel straight lines in space; further, the first direction Z, the second direction Y, and the third direction X can be three mutually perpendicular directions in a three-dimensional coordinate system (a three-dimensional Cartesian coordinate system). In subsequent embodiments, the first direction Z is described as the Z-axis direction of the three-dimensional coordinate system, the second direction Y is the Y-axis direction of the three-dimensional coordinate system, and the third direction X is the X-axis direction of the three-dimensional coordinate system.

[0072] The 3D printer stand 100 includes a moving component 30, a connecting component 20, and a base 41. The moving component 30 includes a first mounting base 31, a transmission structure 32, and a moving member 33. The transmission structure 32 is connected to the first mounting base 31 and drives the moving member 33 to move along a first direction Z. Along the first direction Z, the moving member 33 is spaced apart from the first mounting base 31, and the moving member 33 can move closer to or further away from the first mounting base 31 under the drive of the transmission structure 32.

[0073] The connecting component 20 is configured to connect to the platform component 10, and the base 41 is configured to connect to the tray component 40. The movable component 33 is configured to be detachably connected to either the connecting component 20 or the base 41, and the first mounting base 31 is configured to be detachably connected to the other of the connecting component 20 and the base 41.

[0074] Thus, in the 3D printer frame 100 of this application, the movable component 33 can be detachably connected to either the connecting component 20 or the base 41, and the first mounting base 31 can be detachably connected to the other of the connecting component 20 and the base 41. This allows for selective connection of the movable component 33 to either the connecting component 20 or the base 41, enabling the platform component 10 or the tray component 40 to move via the movable component 33. This provides the 3D printer frame 100 with two mounting methods, thereby allowing the 3D printing equipment 200 using the 3D printer frame 100 to have two different printing modes, increasing the versatility of the 3D printing equipment 200. Furthermore, when switching printing modes is required, simply invert the movable component 30 and then install the platform component 10 and the tray component 40 in the corresponding positions; there is no need to change the positions of the platform component 10 and the tray component 40, improving the installation convenience of the 3D printer frame 100.

[0075] Please combine Figures 3 to 6 In one embodiment, along the first direction Z, the first mounting base 31 and the movable member 33 are spaced apart, and the movable member 33 is located above the first mounting base 31.

[0076] The transmission structure 32 includes a transmission member 321 and a transmission pair 322. The transmission member 321 is connected to the first mounting base 31. The transmission member 321 drives the transmission pair 322 to move along the first direction Z. The movable member 33 is detachably connected to the transmission pair 322 so that the movable member 33 can move along the first direction Z with the transmission pair 322.

[0077] In this embodiment, the transmission structure 32 is a lead screw linear slide. The transmission member 321 is a lead screw, and the extension direction of the transmission member 321 is parallel to the first direction Z. The bottom end of the transmission member 321 is rotatably connected to the first mounting base 31. The moving assembly 30 also includes a second mounting base 34, which is spaced apart along the first direction Z on the side of the moving member 33 away from the first mounting base 31. The top end of the transmission member 321 is rotatably connected to the second mounting base 34. The transmission pair 322 is a lead screw sleeve, which is sleeved on the transmission member 321 and threadedly engaged with it. When the transmission member 321 rotates, it drives the transmission pair 322 to slide along the extension direction of the transmission member 321.

[0078] The transmission pair 322 and the moving part 33 are detachably connected by bolts or screws to facilitate the assembly and disassembly of the moving part 33 and the transmission pair 322.

[0079] It is understood that in other embodiments, the transmission structure 32 may also be other devices such as a cylinder slide.

[0080] Furthermore, the first mounting base 31 and the movable component 33 are each provided with a first connecting structure 1, and the connecting component 20 and the base 41 are each provided with a second connecting structure 2.

[0081] The first connecting structure 1 of the movable component 33 is detachably connected to the second connecting structure 2 of either the connecting component 20 or the base 41, and the first connecting structure 1 of the first mounting base 31 is detachably connected to the second connecting structure 2 of the other of the connecting component 20 and the base 41, so that the position of the movable component 30 can be adjusted according to actual needs.

[0082] In this embodiment, the first mounting base 31 is located below the second mounting base 34. The connecting assembly 20 is connected to the movable member 33 through the first connecting structure 1 and the second connecting structure 2, and the base 41 is connected to the first mounting base 31 through the first connecting structure 1 and the second connecting structure 2. At this time, the connecting assembly 20 moves closer to or further away from the base 41 along the first direction Z under the drive of the movable member 33, that is, the platform assembly 10 moves closer to or further away from the tray assembly 40 along the first direction Z.

[0083] When the working mode of the 3D printing equipment 200 needs to be adjusted, the moving component 30 is flipped so that the first mounting base 31 is positioned above the second mounting base 34. The connecting component 20 is connected to the first mounting base 31 via the first connecting structure 1 and the second connecting structure 2, and the base 41 is connected to the moving component 33 via the first connecting structure 1 and the second connecting structure 2. At this time, the base 41 moves closer to or further away from the connecting component 20 along the first direction Z under the action of the moving component 33, thus enabling the tray assembly 40 to move closer to or further away from the platform assembly 10 along the first direction Z.

[0084] Please combine Figures 3 to 6 In one embodiment, the first connecting structure 1 is a first connecting hole 101 provided on the first mounting base 31 and the movable member 33. The second connecting structure 2 is a second connecting hole 201 provided on the connecting assembly 20 and the base 41.

[0085] The 3D printer frame 100 also includes a fastener 5, which passes through the first connecting hole 101 and the second connecting hole 201. The fastener 5 is a bolt or other component, and the first connecting hole 101 and the second connecting hole 201 are threaded holes. The fastener 5 is configured to engage with the first connecting hole 101 and the second connecting hole 201 in a threaded manner.

[0086] Specifically, along the second direction Y, the first connecting hole 101 is formed on the front side of the first mounting base 31 and the movable member 33. Along the second direction Y, the second connecting hole 201 passes through the connecting assembly 20 and the base 41. In this way, the user can install and remove the fastener 5 from the front side of the 3D printer frame 100, which facilitates user operation.

[0087] In this embodiment, the first mounting base 31 and the movable member 33 have two first connecting holes 101, which are spaced apart along the first direction Z. Correspondingly, the connecting assembly 20 and the base 41 also have two second connecting holes 201, which are spaced apart along the first direction Z, and the spacing between the two second connecting holes 201 is the same as the spacing between the two first connecting holes 101.

[0088] Furthermore, the first mounting base 31 and the movable component 33 are also provided with a first positioning hole 102, which is located between the two first connecting holes 101. The connecting assembly 20 and the base 41 are also provided with a second positioning hole 202, which is located between the two second connecting holes 201. The position of the first positioning hole 102 relative to the two first connecting holes 101 is the same as the position of the second positioning hole 202 relative to the two second connecting holes 201.

[0089] The 3D printer frame 100 also includes a positioning element 6, which is a pin or similar component, and the positioning element 6 passes through the first positioning hole 102 and the second positioning hole 202. Along the second direction Y, the first positioning hole 102 is located on the front side of the first mounting base 31 and the movable component 33. Along the second direction Y, the second positioning hole 202 passes through the connecting assembly 20 and the base 41, facilitating user installation and removal of the fastener 5 from the front side of the 3D printer frame 100, thus simplifying user operation.

[0090] It is understood that, in other embodiments, the number and relative positions of the first connecting hole 101, the second connecting hole 201, the first positioning hole 102, and the second positioning hole 202 can be selected according to actual design requirements.

[0091] Please combine Figures 3 to 6 In one embodiment, the 3D printer rack 100 further includes a frame 70. The frame 70 includes a top plate 71, a bottom plate 74, side plates 73, and a mounting plate 72.

[0092] The side plate 73 is a flat plate structure, and the direction of the normal of the side plate 73 is parallel to the second direction Y. Along the first direction Z, the top plate 71 and the bottom plate 74 are respectively connected to the top and bottom of the side plate 73. There are two mounting plates 72, and along the third direction X, the two mounting plates 72 are respectively connected to the left and right sides of the side plate 73.

[0093] The top plate 71, bottom plate 74, side plate 73, and mounting plate 72 can be detachably connected by screws or other components, or they can be integrally molded.

[0094] The mounting plate 72 is approximately U-shaped to enclose a U-shaped cavity. There are two movable components 30, each located within a separate U-shaped cavity, which are protected by the mounting plate 72. The opening of the mounting plate 72 faces forward along the second direction Y, allowing the user to easily install and remove the movable components 30 from the front of the 3D printer frame 100.

[0095] The movable parts 33 of the two movable components 30 are detachably connected to one of the connecting component 20 and the base 41, and the first mounting bases 31 of the two movable components 30 are detachably connected to the other of the connecting component 20 and the base 41.

[0096] In this embodiment, the first mounting base 31 is connected to the side of the base plate 74 near the top plate 71, and the second mounting base 34 is connected to the side of the top plate 71 near the base plate 74.

[0097] Both the first mounting base 31 and the second mounting base 34 have first mounting holes 7, and both the base plate 74 and the top plate 71 have second mounting holes 8. Both the first mounting holes 7 and the second mounting holes 8 are threaded holes. The first mounting holes 7 on the first mounting base 31 can be used in conjunction with the second mounting holes 8 on the base plate 74 and the top plate 71 to connect the first mounting base 31 to the base plate 74 or the top plate 71 using bolts or other components. Similarly, the first mounting holes 7 on the second mounting base 34 can be used in conjunction with the second mounting holes 8 on the base plate 74 and the top plate 71 to connect the second mounting base 34 to the base plate 74 or the top plate 71 using bolts or other components, thereby enabling the movable assembly 30 to be installed either forwards or backwards.

[0098] In this embodiment, the moving component 30 further includes a guide shaft 35. The guide shaft 35 is cylindrical in shape, and its extension direction is parallel to the first direction Z. Along the second direction Y, the guide shaft 35 is spaced apart on the rear side of the transmission member 321. The two ends of the guide shaft 35 are respectively connected to the first mounting base 31 and the second mounting base 34, and the guide shaft 35 passes through the moving member 33 to guide the moving member 33 to slide.

[0099] Please combine Figures 3 to 6 In one embodiment, the 3D printer frame 100 further includes a drive assembly 90, which is driveably connected to a transmission member 321 and provides driving force to the transmission member 321. The transmission member 321 is driveably connected to a transmission pair 322, and based on the driving force, the transmission member 321 drives the transmission pair 322 to move along a first direction Z.

[0100] The drive assembly 90 is connected to the transmission structure 32 of the two moving assemblies 30 to provide driving force to the two transmission structures 32 simultaneously, thereby driving the connecting assembly 20 to move synchronously through the two moving parts 33.

[0101] In this embodiment, the drive assembly 90 is mounted on the side of the base plate 74 away from the top plate 71. The bottom end of the transmission member 321 extends out of the first mounting base 31 and is connected to the drive assembly 90 for transmission.

[0102] The drive assembly 90 includes a drive member 91, a drive wheel 92, two transmission wheels 93, a transmission belt 94, and a tensioning structure 95. One end of each of the two transmission members 321 protruding from the first mounting base 31 is coaxially connected to one of the two transmission wheels 93. The drive member 91 is a motor, etc., and is mounted on the base plate 74. The drive end of the drive member 91 is coaxially connected to the drive wheel 92. The drive wheel 92 is connected to the two transmission wheels 93 via the transmission belt 94, thereby driving the two transmission wheels 93 to rotate via the drive member 91. The two transmission wheels 93 then drive the two transmission members 321 to rotate.

[0103] The tensioning structure 95 is a spring tensioning device that can keep the transmission belt 94 taut, ensuring stable and reliable transmission.

[0104] Please combine Figures 7 to 9 In one embodiment, the connecting component 20 includes a support frame 21 and a movable element 22.

[0105] The second connecting hole 201 and the second positioning hole 202 are both provided on the support frame 21, so that the support frame 21 can be detachably connected to the movable member 33 or the first mounting base 31, and the movable member 22 is movably connected to the support frame 21 along the first direction Z. The platform assembly 10 is at least partially disposed between the support frame 21 and the movable member 22 and configured to be clamped, so that the clamping or loosening of the platform assembly 10 can be achieved by the movement of the movable member 22 relative to the support frame 21.

[0106] In this embodiment, the platform assembly 10 includes a first platform 11 and a second platform 12. One side surface of the first platform 11 and one side surface of the second platform 12 together form the molding surface P5 of the platform assembly 10. The consumable can be cured on the molding surface P5 and formed into a printed part. Along the first direction Z, the first platform 11 and the second platform 12 can move relative to each other to allow the printed part formed on the molding surface P5 of the platform assembly 10 to fall off.

[0107] The support frame 21 extends parallel to the second direction Y. One end of the support frame 21 is connected to the movable component 30, which drives the support frame 21 to move up and down along the first direction Z. Along the first direction Z, the movable member 22 is movably connected to the support frame 21, allowing the movable member 22 to move relative to the support frame 21 along the first direction Z. The first platform 11 and the second platform 12 are at least partially clamped between the other end of the support frame 21 away from the movable component 30 and the movable member 22. Thus, when the movable member 22 moves towards the support frame 21 along the first direction Z, it presses the first platform 11 and the second platform 12 against the support frame 21, fixing them relatively to each other. When the movable member 22 moves away from the support frame 21 along the first direction Z, it moves away from the first platform 11 and the second platform 12 and no longer presses them against the support frame 21, allowing the first platform 11 and the second platform 12 to be removed from the support frame 21.

[0108] In this embodiment, the support frame 21 is generally rectangular in shape. A weight-reducing groove is provided at the center of the support frame 21, and the weight-reducing groove penetrates the support frame 21 along the first direction Z to reduce the weight of the support frame 21. Along the first direction Z, a first receiving groove 213 is provided on the top surface of the support frame 21, and the first receiving groove 213 penetrates the support frame 21 along the third direction X.

[0109] The movable part 22 is roughly "I" shaped and includes a first section 221 and two second sections 222. The first section 221 extends parallel to a third direction X, and the two second sections 222 are respectively connected to both ends of the first section 221. The two second sections 222 extend parallel to a second direction Y, and the two second sections 222 are integrally formed with the first section 221.

[0110] The first section 221 is accommodated within the first receiving groove 213. Along the second direction Y, the opposite sides of the first section 221 abut against the inner walls of both sides of the first receiving groove 213 to limit the movement of the movable member 22 along the second direction Y. Both second sections 222 are located outside the first receiving groove 213, and along the third direction X, the two second sections 222 abut against the opposite sides of the support frame 21 to limit the movement of the movable member 22 along the third direction X.

[0111] Thus, when the movable part 22 presses the first platform 11 and the second platform 12 against the support frame 21, the movable part 22 is limited in the second direction Y and the third direction X, preventing the movable part 22 from shaking and causing the first platform 11 and the second platform 12 to fail to be pressed.

[0112] Please combine Figures 7 to 10In one embodiment, the 3D printer frame 100 further includes a first elastic member 3, one end of which is elastically connected to the movable member 22. The first elastic member 3 is configured to provide an elastic force to the movable member 22 to move toward one side of the support frame 21, so that the movable member 22 presses the first platform 11 and the second platform 12 against the support frame 21 under the action of the elastic force of the first elastic member 3, thereby preventing the first platform 11 and the second platform 12 from shaking.

[0113] Furthermore, the 3D printer frame 100 also includes a guide member 4. The extension direction of the guide member 4 is parallel to the first direction Z. One end of the guide member 4 is connected to the support frame 21, and the other end of the guide member 4 passes through the movable member 22. The first elastic member 3 is a compression spring. One end of the first elastic member 3 is elastically connected to the guide member 4, and the other end is elastically connected to the movable member 22.

[0114] Specifically, the bottom wall of the first receiving groove 213 is provided with a second receiving groove 214, which extends along the first direction Z and does not penetrate the support frame 21. The bottom end of the guide member 4 is fixed to the bottom wall of the second receiving groove 214. A first through hole 2212 is provided on the first region 221, which extends along the first direction Z and penetrates the first region 221. The top end of the guide member 4 protrudes through the first through hole 2212, and the end of the guide member 4 protruding through the first through hole 2212 is provided with a supporting part 4001, the outer diameter of which is larger than the outer diameter of the guide member 4.

[0115] The cross-sectional shape of the first perforation 2212 is trapezoidal, so as to form a stepped surface P1 between two sections with different inner diameters of the first perforation 2212. The first elastic member 3 is sleeved on the outer peripheral surface of the guide member 4 and is elastically compressed between the stepped surface P1 and the supporting part 4001.

[0116] In this embodiment, the number of guide members 4 is set to two, and the two guide members 4 are spaced apart along the third direction X. Correspondingly, the number of first elastic members 3 is set to two.

[0117] It is understood that in other embodiments, the number of guide member 4 and first elastic member 3 may also be set to one or three or other quantities.

[0118] Please combine Figures 7 to 9 In one embodiment, the 3D printer frame 100 further includes an unlocking component 50, which is movably connected to the support frame 21. The unlocking component 50 is configured to abut against the movable member 22 and move it away from the support frame 21. This allows the movable member 22 to overcome the elastic force exerted on it by the first elastic member 3 and move away from the support frame 21, thereby preventing the movable member 22 from pressing the first platform 11 and the second platform 12 against the support frame 21.

[0119] Specifically, the unlocking component 50 includes an unlocking element 51 and a hinge 52.

[0120] The rotating shaft 52 is cylindrical in shape, and its extension direction is parallel to the third direction X. The rotating shaft 52 is connected to the support frame 21. The support frame 21 is provided with a mounting part 211, the extension direction of which is parallel to the third direction X, and both ends of the mounting part 211 are respectively connected to the inner walls of the two sides of the weight reduction groove. Along the first direction Z, the height of the top surface of the mounting part 211 is lower than the height of the bottom wall of the first receiving groove 213.

[0121] The top surface of the mounting part 211 is provided with two mounting protrusions 212. The two mounting protrusions 212 are spaced apart along the third direction X. The rotating shaft 52 is located between the two mounting protrusions 212, and the two ends of the rotating shaft 52 are respectively connected to the two mounting protrusions 212.

[0122] The unlocking member 51 is elongated, and its extension direction is parallel to the second direction Y. The unlocking member 51 has a rotating hole 510 extending along the third direction X. A rotating shaft 52 passes through the rotating hole 510, allowing the unlocking member 51 to rotate around its axis. One end of the unlocking member 51 movably abuts against the movable member 22, while the other end is a free end. Applying external force to the free end of the unlocking member 51 can drive it to rotate around the rotating shaft 52, thereby causing the unlocking member 51 to move away from the movable member 22 and away from the support frame 21.

[0123] In particular, the rotating hole 510 is located approximately at the end of the unlocking member 51 near the movable member 22, which can save effort.

[0124] Along the second direction Y, the first section 221 has a retaining groove 2211 on the side near the unlocking member 51. Along the first direction Z, the depth of the retaining groove 2211 is greater than the thickness of the unlocking member 51, so that the free end of the unlocking member 51 can move up and down within the retaining groove 2211. After the free end of the unlocking member 51 contacts the top wall of the retaining groove 2211, it pushes the movable member 22 upward.

[0125] Please combine Figures 9 to 12 In one embodiment, one of the first platform 11 and the second platform 12 is provided with a protrusion 1210, and the other of the first platform 11 and the second platform 12 is provided with a through hole 1110. Along the first direction Z, the protrusion 1210 is movably disposed in the through hole 1110.

[0126] In this embodiment, along the first direction Z, the top surface of the first platform 11 is provided with a movable cavity 114, and the second platform 12 is movably disposed within the movable cavity 114, so that the second platform 12 can move relative to the first platform 11 along the first direction Z. A through hole 1110 is provided on the bottom end surface of the first platform 11 along the first direction Z, and a protrusion 1210 is provided on the end face of the second platform 12 near the bottom wall of the movable cavity 114.

[0127] The bottom surface of the first platform 11 is designated as the first molding surface P3, and the end face of the protrusion 1210 away from the second platform 12 is designated as the second molding surface P4.

[0128] When the movable component 22 presses the first platform 11 and the second platform 12 against the support frame 21, the first forming surface P3 and the second forming surface P4 are flush, so that the two together constitute the forming surface P5 of the platform assembly 10, that is, the consumable can be accumulated on the first forming surface P3 and the second forming surface P4 at the same time. Thus, when the second platform 12 moves upward or downward relative to the first platform 11 in the first direction Z, the first forming surface P3 and the second forming surface P4 are no longer coplanar, and the printed part will be resisted by the first forming surface P3 or the second forming surface P4, causing the printed part to detach from the forming surface P5.

[0129] It is understood that in other embodiments, the protrusion 1210 may also be provided on the first platform 11, and correspondingly, the through hole 1110 may be provided on the second platform 12. The specific locations of the protrusion 1210 and the through hole 1110 can be selected according to actual design requirements.

[0130] It is understood that in other embodiments, the first platform 11 may be configured to move relative to the second platform 12 along the first direction Z.

[0131] In this embodiment, the through hole 1110 is elongated, and the shape of the protrusion 1210 is adapted to the shape of the through hole 1110. Multiple through holes 1110 are arranged in an array. The number of protrusions 1210 is the same as the number of through holes 1110, and each protrusion 1210 corresponds to one through hole 1110.

[0132] Specifically, a gap 14 is provided between the outer peripheral surface of the protrusion 1210 and the inner peripheral surface of the through hole 1110. The existence of the gap 14 allows consumables such as resin to flow back through the gap 14 during the lifting and lowering process of the platform assembly 10, thereby increasing the resin filling speed and improving the printing speed. In addition, the setting of the gap 14 can also prevent negative pressure from forming in the inner cavity of the printed part when printing hollow cylinders or other printed parts. During demolding, the negative pressure can cause excessive adsorption between the platform assembly 10 and the release film 43 of the material tray assembly 40, which can deform the release film 43 and easily cause resin splashing and other problems.

[0133] It is understood that in other embodiments, the through hole 1110 and the protrusion 1210 may also be circular or other shapes, and their specific shapes can be selected according to actual design requirements. In addition, the number and distribution of the through hole 1110 and the protrusion 1210 can also be selected according to actual design requirements.

[0134] Please combine Figures 9 to 12 In one embodiment, the first platform 11 includes a first main body 111 and a first extension 112. The first extension 112 is connected to the first main body 111 and is at least partially clamped between the support frame 21 and the movable member 22.

[0135] The first main body 111 is generally flat, and a through hole 1110 is provided on the bottom end face of the first main body 111 and penetrates through the first main body 111. The first extension 112 is generally L-shaped and includes a first vertical part 1121 and a first horizontal part 1122. The extension direction of the first vertical part 1121 is parallel to the first direction Z, and the bottom end of the first vertical part 1121 is connected to the top end face of the first main body 111. The extension direction of the first horizontal part 1122 is parallel to the third direction X, and one end of the first horizontal part 1122 is connected to the top end of the first vertical part 1121. The other end of the first horizontal part 1122 is clamped between the support frame 21 and the movable member 22.

[0136] Specifically, along the third direction X, support portions 215 protrude from opposite sides of the support frame 21. Along the first direction Z, the thickness of the support portion 215 is less than the thickness of the support frame 21. The end of the first horizontal portion 1122 away from the first vertical portion 1121 is placed on the top surface of the support portion 215, and the support portion 215 provides support for the first horizontal portion 1122.

[0137] The number of first extensions 112 is set to two, and the two first extensions 112 are spaced apart along the third direction X, forming the aforementioned movable cavity 114 between the two first extensions 112. The support frame 21 is at least partially disposed between the two first extensions 112, and the two first horizontal portions 1122 of the two first extensions 112 are respectively placed on the top surfaces of the two support portions 215.

[0138] Thus, the number of the first extension 112 and the support 215 is set to two, which can simultaneously press the first platform 11 from the left and right sides along the third direction X, making the force on the first platform 11 more uniform and preventing the risk of tilting due to uneven force on the left and right sides. In conjunction with the limiting component 60, automatic leveling is achieved, avoiding the errors that are easy to occur when manually leveling.

[0139] Furthermore, when the two first horizontal portions 1122 of the two first extension portions 112 are respectively placed on the top surfaces of the two support portions 215, the two first horizontal portions 1122 respectively abut against the opposite sides of the support frame 21 along the third direction X, so as to achieve the limiting of the first platform 11 in the third direction X.

[0140] Please combine Figure 13 And see Figures 8 to 9 In one embodiment, the 3D printer frame 100 further includes a limiting component 60. The limiting component 60 is disposed on the support frame 21 or the movable member 22, and the limiting component 60 movably abuts against the first platform 11 to limit the first platform 11 at least in the second direction Y.

[0141] The limiting component 60 includes a second elastic member 61, the first end of which is elastically connected to the movable member 22. The first platform 11 is provided with a limiting groove 1124, and the second end of the second elastic member 61 is engaged in the limiting groove 1124.

[0142] Specifically, the second section 222 of the movable component 22 is provided with a second through hole 2213, which penetrates the second section 222 along the first direction Z. The second elastic component 61 is a spring plunger, which includes a connecting part 611 and an elastic part 612 connected in sequence along the first direction Z. The connecting part 611 is cylindrical in shape, and the elastic part 612 is hemispherical in shape, and the elastic part 612 is made of elastic material such as silicone. The connecting part 611 passes through the second through hole 2213, and the connecting part 611 and the second through hole 2213 are threaded together to thread the connecting part 611 onto the second section 222.

[0143] A limiting groove 1124 is provided on the first horizontal part 1122 of the first platform 11. The limiting groove 1124 is located on the top surface of the area where the first horizontal part 1122 overlaps with the support part 215. The top end of the elastic part 612 is connected to the connecting part 611, and the bottom end of the elastic part 612 extends out of the second through hole 2213 and is held in the limiting groove 1124.

[0144] As the movable component 22 moves away from the support frame 21 under the action of the unlocking component 50 until it no longer supports the first platform 11, the elastic part 612 of the second elastic component 61 is always held in the limiting groove 1124. So that when the first platform 11 is no longer clamped, the presence of the second elastic component 61 ensures that there is still a certain connection between the first platform 11 and the movable component 22, preventing the first platform 11 from immediately sliding and falling after the movable component 22 is lifted.

[0145] The limiting groove 1124 is approximately "V" shaped. Along the second direction Y, the two opposing inner walls of the limiting groove 1124 are configured as a first abutting wall P6 and a second abutting wall P7, both of which are configured to abut the second elastic member 61. The first abutting wall P6 and the second abutting wall P7 are both inclined and are set at an included angle to facilitate guiding the elastic part 612 into or out of the limiting groove 1124.

[0146] Thus, the first platform 11 is limited in the second direction Y by the supporting action of the first supporting wall P6 and the second supporting wall P7 on the elastic part 612. When it is necessary to remove the first platform 11, the first platform 11 can be pushed directly in the second direction Y, so that the elastic part 612 overcomes the limiting action of the limiting groove 1124 and leaves the limiting groove 1124, thereby smoothly pushing the first platform 11 away from the support part 215 in the second direction Y. At the same time, the second platform 12 is located in the movable cavity 114 of the first platform 11. After the first platform 11 is removed, the second platform 12 is also removed from the support frame 21 simultaneously. In addition, the setting of the limiting component 60 can provide position feedback to enhance the human-computer interaction function. The user can first fix the position of the platform component 10 through the limiting component 60, and then achieve the leveling of the platform component 10 with the clamping action of the support frame 21 and the movable part 22, so that printing can be performed without additional leveling work.

[0147] In this embodiment, a limiting protrusion 710 protrudes from the side of the top plate 71 facing the moving component 30. The limiting protrusion 710 is approximately "L"-shaped and is located on the lifting path of the end of the unlocking member 51 away from the rotating shaft 52. When the moving component 30 drives the support frame 21 to move upward, the support frame 21 drives the unlocking member 51 to move upward. When the unlocking member 51 abuts against the limiting protrusion 710, the moving component 30 continues to drive the support frame 21 to move upward. The end of the unlocking member 51 away from the rotating shaft 52 is resisted by the limiting protrusion 710 and rotates downward, thereby causing the end of the unlocking member 51 near the rotating shaft 52 to rotate upward. This, in turn, lifts the movable member 22 through the unlocking member 51, so that the movable member 22 no longer presses the platform component 10 against the support frame 21. Thus, the setting of the limiting protrusion 710 can serve as the zero position of the 3D printing equipment 200, so that the movable member 22 can be automatically unlocked through the limiting protrusion 710.

[0148] Please combine Figures 9 to 11 In one embodiment, the second platform 12 includes a second main body 121 and a second extension 122. The second main body 121 is generally flat and is placed horizontally. The second extension 122 is connected to the top surface of the second main body 121 and is at least partially clamped between the support frame 21 and the movable member 22.

[0149] Specifically, the second extension 122 is approximately T-shaped and includes a second vertical portion 1221 and a second horizontal portion 1222. The extension direction of the second vertical portion 1221 is parallel to the first direction Z, and the bottom end of the second vertical portion 1221 is connected to the top surface of the second main body portion 121. The extension direction of the second horizontal portion 1222 is parallel to the third direction X, and the bottom surface of the middle section of the second horizontal portion 1222 is connected to the top surface of the second vertical portion 1221. One end of the second horizontal portion 1222 is placed on the top surface of the support portion 215 to support the second horizontal portion 1222.

[0150] The second extension 122 is provided in two parts, spaced apart along a third direction X. Along the third direction X, the two second extensions 122 are located on opposite sides of the support frame 21, and the adjacent ends of the second horizontal portions 1222 of both second extensions 122 are placed on the top surface of the support 215. Furthermore, the adjacent ends of the second horizontal portions 1222 of the two second extensions 122 abut against opposite sides of the support frame 21 along the third direction X, thereby limiting the second platform 12 in the third direction X.

[0151] The top surface of the first extension 112 is provided with a positioning groove 1123. Along the third direction X, the end of the second horizontal part 1222 away from the support frame 21 extends into the positioning groove 1123 and abuts against the side wall of the positioning groove 1123, so as to further realize the limiting of the second platform 12 in the third direction X.

[0152] Furthermore, along the second direction Y, the opposite sides of the second horizontal portion 1222 extending into the positioning groove 1123 respectively abut against the side walls of the positioning groove 1123 along the second direction Y, thereby limiting the second platform 12 in the second direction Y. Thus, when the movable part 22 no longer presses the second platform 12 against the support frame 21, the second platform 12 is supported by the support portion 215, and the second platform 12 is limited in both the second direction Y and the third direction X, ensuring that the second platform 12 will not slide directly after the movable part 22 is released from its clamping state. Moreover, this limiting method of the second platform 12 does not affect the assembly and disassembly of the second platform 12; when removing the first platform 11, the second platform 12 can still be removed from the support frame 21 simultaneously with the first platform 11.

[0153] Specifically, along the first direction Z, the positioning groove 1123 penetrates the top surface of the first extension 112, so that the second platform 12 can move upward along the first direction Z and leave the first platform 11.

[0154] Please combine Figure 14In another embodiment, the 3D printing device 200 further includes a demolding structure 13, which is drively connected to one of the first platform 11 and the second platform 12. Along the first direction Z, the demolding structure 13 is configured to drive one of the first platform 11 and the second platform 12 to move relative to the other.

[0155] Along a third direction X, a demolding structure 13 is at least disposed on one side of the first platform 11, and the demolding structure 13 is rotatably connected to the first platform 11. The second platform 12 is at least partially located on the rotation path of the demolding structure 13. Based on the rotation of the demolding structure 13 relative to the first platform 11, the demolding structure 13 can drive the second platform 12 to move relative to the first platform 11 along a first direction Z.

[0156] In this embodiment, the number of demolding structures 13 is set to two. Along the third direction X, the two demolding structures 13 are respectively located on opposite sides of the first platform 11, and both demolding structures 13 are rotatably connected to the first platform 11.

[0157] The demolding structure 13 includes a rotating handle 131, a first rotating shaft 132, and a second rotating shaft 133. The extension directions of both the first rotating shaft 132 and the second rotating shaft 133 are parallel to a third direction X. Along a second direction Y, the first rotating shaft 132 and the second rotating shaft 133 are spaced apart. Along the third direction X, the rotating handle 131 is located on the side of the first vertical portion 1121 away from the second vertical portion 1221.

[0158] The first vertical portion 1121 has a first demolding hole 1125 and a second demolding hole 1126, which penetrate the first vertical portion 1121 along the third direction X. The second vertical portion 1221 has a third demolding hole 1223 and a fourth demolding hole 1224, which penetrate the second vertical portion 1221 along the third direction X. Along the second direction Y, the first demolding hole 1125 and the second demolding hole 1126 are spaced apart, and the third demolding hole 1223 and the fourth demolding hole 1224 are also spaced apart.

[0159] The first demolding hole 1125 is circular, the second demolding hole 1126 is elongated and extends along the first direction Z. The third demolding hole 1223 is elongated and extends along the first direction Z. The fourth demolding hole 1224 is circular.

[0160] One end of the first rotating shaft 132 passes through the third demolding hole 1223 and the first demolding hole 1125 in sequence and is then connected to the rotating handle 131. One end of the second rotating shaft 133 passes through the fourth demolding hole 1224 and the second demolding hole 1126 in sequence and is then connected to the rotating handle 131. In addition, the other ends of the first rotating shaft 132 and the second rotating shaft 133 both abut against the second vertical part 1221.

[0161] Thus, the second demolding hole 1126 and the third demolding hole 1223 are designed as elongated strips, providing space for the first rotating shaft 132 and the second rotating shaft 133 to move in the first direction Z. Therefore, by rotating the rotating handle 131, the second platform 12 can be raised or lowered relative to the first platform 11 in the first direction Z, thereby enabling rapid demolding of the printed part.

[0162] Please combine Figures 15 to 18 In one embodiment, the tray assembly 40 includes a tray frame 42 and a release film 43. A base 41 is detachably connected to a movable member 33, and a mounting groove 411 is provided on the side of the base 41 near the platform assembly 10 along the first direction Z. The tray frame 42 is detachably connected to one end of the base 41 near the platform assembly 10, and a through cavity 421 is provided through the tray frame along the first direction Z. The release film 43 is at least partially disposed within the mounting groove 411, and is clamped between the tray frame 42 and the base 41. The surface of the release film 43 facing the platform assembly 10 and the inner peripheral wall of the tray frame 42 form a tray groove 401.

[0163] The base 41 is generally square in shape and can be connected to the movable part 33 by screws or other components. The mounting groove 411 extends downward from the top surface of the base 41, and the depth of the mounting groove 411 is less than the height of the base 41. The outer diameter of the material frame 42 is smaller than the inner diameter of the mounting groove 411, so that the material frame 42 can be partially placed in the mounting groove 411.

[0164] Furthermore, the tray assembly 40 also includes a first pressure ring 45 and a second pressure ring 46. Along the first direction Z, the first pressure ring 45 and the second pressure ring 46 are spaced apart, and the release film 43 is clamped between the first pressure ring 45 and the second pressure ring 46. Specifically, along the first direction Z, the first pressure ring 45 and the second pressure ring 46 are clamped between the base 41 and the material frame 42.

[0165] Specifically, both the first pressure ring 45 and the second pressure ring 46 are annular structures. The second pressure ring 46 is placed on the top surface of the base 41, supported by the base 41, and surrounds the opening of the mounting groove 411. The first pressure ring 45 is placed above the second pressure ring 46, and the inner diameters of the first pressure ring 45 and the second pressure ring 46 are the same.

[0166] The release film 43 includes a film portion 431 and a frame portion 432. The frame portion 432 is disposed around the outer peripheral surface of the film portion 431, and the frame portion 432 is integrally formed with the film portion 431, so as to facilitate the direct installation of the release film 43 through the frame portion 432, thereby improving the installation and removal efficiency of the release film 43.

[0167] The frame portion 432 is clamped between the first pressure ring 45 and the second pressure ring 46. The film portion 431 is generally curved and extends into the second pressure ring 46. The bottom of the material frame 42 passes through the first pressure ring 45 and is pressed against the release film 43. The surface of the film portion 431 facing the platform assembly 10 and the inner peripheral wall of the material frame 42 form a material groove 401.

[0168] Specifically, the bottom outer peripheral surface of the material frame 42 is provided with a plurality of abutting protrusions 422, which are spaced apart around the outer peripheral surface of the material frame 42. The top opening of the first pressure ring 45 is provided with a plurality of inclined grooves 452, which are inclined and used to accommodate the abutting protrusions 422. When the abutting protrusions 422 are accommodated within the inclined grooves 452, the abutting protrusions 422 abut against the first pressure ring 45, applying a downward force along the first direction Z and a radial outward force along the first pressure ring 45, thereby ensuring the stability of the first pressure ring 45 installation.

[0169] The top surface of the second pressure ring 46 has a plurality of connecting posts 461 protruding from it, and the plurality of connecting posts 461 are evenly spaced around the opening of the second pressure ring 46. The frame portion 432 has a plurality of first through holes 4320, each corresponding to one of the connecting posts 461, and the first through holes 4320 penetrate the frame portion 432 along the first direction Z. The first pressure ring 45 has a plurality of second through holes 451, each corresponding to one of the connecting posts 461, and the second through holes 451 penetrate the first pressure ring 45 along the first direction Z. The connecting posts 461 pass through their corresponding first through holes 4320 and second through holes 451, thereby limiting the release film 43.

[0170] In this embodiment, a pressure ring portion 453 protrudes from the bottom end face of the first pressure ring 45. The pressure ring portion 453 surrounds the opening of the first pressure ring 45 and is integrally formed with the first pressure ring 45. The pressure ring portion 453 is located inside the second pressure ring 46 and abuts against the inner circumferential surface of the second pressure ring 46.

[0171] A first retaining protrusion 454 protrudes from the outer peripheral surface of the pressure ring portion 453, and the first retaining protrusion 454 surrounds the outer peripheral surface of the pressure ring portion 453. A second retaining protrusion 462 protrudes from the inner peripheral surface of the second pressure ring 46, and the second retaining protrusion 462 surrounds the inner peripheral surface of the second pressure ring 46. Along the first direction Z, the first retaining protrusion 454 and the second retaining protrusion 462 are spaced apart, and the frame portion 432 is clamped between the first retaining protrusion 454 and the second retaining protrusion 462, further improving the stability of the connection between the first pressure ring 45, the second pressure ring 46 and the release film 43, and ensuring that the release film 43 still has relatively good installation stability when screws or other components are not used to install the release film 43.

[0172] Specifically, a second sealing groove 423 is provided around the outer circumference of the bottom of the material frame 42, and a second sealing ring 403 is installed in the second sealing groove 423. The second sealing ring 403 is clamped between the outer circumference of the material frame 42 and the inner circumference of the pressure ring part 453 to prevent resin leakage in the material groove 401.

[0173] In this embodiment, the tray assembly 40 further includes a locking structure 44, which movably abuts against the end of the material frame 42 away from the base 41. The locking structure 44 is configured to press the material frame 42 against the base 41.

[0174] The locking structure 44 includes a rotating member 441 and a holding member 442. The rotating member 441 is arranged along the first direction Z, and its bottom end is rotatably connected to the base 41. The holding member 442 is connected to the top end of the rotating member 441, and the holding member 442 can rotate with the rotating member 441 until the holding member 442 is partially located above the material frame 42. The holding member 442 holds the material frame 42 in the first direction Z, thereby pressing the material frame 42 against the base 41. Thus, the holding member 442 achieves relative fixation of the material frame 42, the first pressure ring 45, the release film 43, the second pressure ring 46, and the base 41 in the first direction Z.

[0175] Thus, when it is necessary to remove the release film 43, the retaining member 442 can be rotated until it no longer presses against the material frame 42, and then the material frame 42 and the first pressure ring 45 can be removed before the release film 43 can be removed. Compared with the threaded connection structure, this improves the efficiency of removing and installing the release film 43.

[0176] In this embodiment, a liquid level sensor 402 is installed on the material frame 42 to detect the height of the resin in the material tank 401. Flow guide grooves 424 are provided at the four corners of the material frame 42, and the flow guide grooves 424 are inclined to guide the resin in the material tank 401 to flow out.

[0177] Please combine Figure 17 And see Figure 13 and Figure 14In one embodiment, limiting members 113 are respectively provided on opposite sides of the two first extensions 112 of the first platform 11. The limiting member 113 has a limiting surface P2 at one end facing the tray assembly 40. The first distance between the limiting surface P2 and the end face of the material frame 42 facing the platform assembly 10 is smaller than the second distance between the molding surface P5 and the top surface of the release film 43, so that when the limiting surface P2 abuts against the end face of the material frame 42 facing the platform assembly 10, there is a molding cavity between the molding surface P5 and the release film 43.

[0178] Specifically, the number of limiting members 113 is set to four. Two limiting members 113 are provided on one first extension 112, and the other two limiting members 113 are provided on another first extension 112. In addition, the two limiting members 113 located on the same first extension 112 are spaced apart along the second direction Y, so that the platform assembly 10 and the tray assembly 40 are limited by the four limiting members 113.

[0179] Optionally, the difference between the first spacing and the second spacing is 0.3mm, that is, the height of the forming cavity is 0.3mm. On the one hand, this ensures that when the material tray assembly 40 rises, the limiting member 113 first contacts the upper edge of the material frame 42, preventing the platform assembly 10 from hitting the release film 43 and other structures and causing damage. On the other hand, it ensures that the limiting members 113 of the platform assembly 10 are pressed tightly on the material frame 42, so that the forming surface P5 and the top surface of the release film 43 are forcibly restricted in position, leaving only the minimum thickness space, in order to ensure the success rate of the printed parts after forming and reduce printing failures caused by leveling.

[0180] It is understood that in other embodiments, the difference between the first spacing and the second spacing may also be other values ​​such as 0.2mm or 0.4mm.

[0181] Please combine Figures 17 to 21 And see Figure 15 In one embodiment, the tray assembly 40 further includes a screen assembly 47 and a light source assembly 48. The light source assembly 48 emits light, which passes through the screen assembly 47 and irradiates a photocurable material such as resin, thereby obtaining various cured layers of the desired pattern. The various cured layers are stacked to form a printed part.

[0182] Both the screen assembly 47 and the light source assembly 48 are located in the mounting groove 411. Along the first direction Z, the screen assembly 47 is located on the side of the release film 43 away from the platform assembly 10, and the light source assembly 48 is located at intervals on the side of the screen assembly 47 away from the release film 43.

[0183] In this embodiment, the screen assembly 47 includes a screen substrate 471, a printing screen 472, and a protective film 473. The screen substrate 471 is located within the mounting groove 411 and is detachably connected to the base 41. The printing screen 472 is disposed on the side of the screen substrate 471 near the release film 43, and is supported by the screen substrate 471. The screen substrate 471 is made of glass to ensure that light can penetrate it. The protective film 473 is affixed to the side of the printing screen 472 away from the screen substrate 471. The protective film 473 is a tempered glass film that protects the surface of the printing screen 472 and prevents damage to it.

[0184] The inner peripheral wall of the mounting groove 411 is provided with a support protrusion 410. The screen base 471 is placed on the top surface of the support protrusion 410 so that the support protrusion 410 supports the screen base 471. In addition, when the screen base 471 is placed on the support protrusion 410, a cavity is formed between the screen base 471 and the bottom wall of the mounting groove 411 for the installation of the light source assembly 48.

[0185] The outer contour of the protective film 473 extends beyond the outer contour of the printing screen 472 to ensure that the protective film 473 can completely cover the printing screen 472.

[0186] Furthermore, the tray assembly 40 also includes a heat sink 49, which may be made of a thermally conductive material such as aluminum. The heat sink 49 surrounds the outer periphery of the base 41, and the heat sink 49 and the base 41 are detachably connected. For example, the heat sink 49 and the base 41 are connected by bolts or other components, and the heat sink 49 and the base 41 are locked together in the first direction Z.

[0187] The heat sink 49 is thermally coupled to the light source assembly 48 to dissipate heat from the light source assembly 48. A pressing protrusion 491 is provided on the inner circumferential surface of the heat sink 49. The pressing protrusion 491 is located on the side of the protective film 473 away from the printing screen 472, and it abuts against the portion of the protective film 473 that extends beyond the printing screen 472, thereby pressing the protective film 473 and the printing screen 472 firmly onto the screen base 471. Furthermore, the screen base 471 is supported by a support protrusion 410, and the entire screen assembly 47 can be pressed against the support protrusion 410 by the pressing protrusion 491, thereby limiting the position of the screen assembly 47.

[0188] The tray assembly 40 also includes a first sealing ring 404. A first sealing groove 4910 is provided on the side of the pressing protrusion 491 near the protective film 473. The first sealing ring 404 is disposed in the first sealing groove 4910 and is clamped between the pressing protrusion 491 and the area of ​​the protective film 473 that extends beyond the printing screen 472, thereby preventing resin leakage from flowing into the printing screen 472.

[0189] In this embodiment, the light source assembly 48 includes a plurality of light-emitting elements 483 arranged in a matrix. Along the first direction Z, the light source assembly 48 also includes a heat sink 481, a lamp holder 482, a second lens 484, and a first lens 485 arranged sequentially. The heat sink 481 is fixed in the mounting groove 411 and is thermally coupled to the heat sink base 49. The lamp holder 482 is mounted on the top surface of the heat sink 481, and the plurality of light-emitting elements 483 are arrayed on the top surface of the lamp holder 482. The first lens 485 and the second lens 484 allow light emitted by the light-emitting elements 483 to pass through and can straighten the light.

[0190] In this embodiment, the light-emitting element 483 is generally rectangular in shape, and multiple light-emitting elements 483 are distributed in a honeycomb pattern. Under the control of a control device, some of the light-emitting elements 483 can operate. When printing a specific shaped printing layer is required, the light-transmitting and non-light-transmitting areas of the screen assembly 47 need to be adjusted. The control device can adjust the light-emitting elements 483 corresponding to the light-transmitting area to emit light towards the light-transmitting area, and control the light-emitting elements 483 not corresponding to the light-transmitting area to stop operating. This achieves zoned operation of the light source assembly 48, eliminating the need for all light-emitting elements 483 to emit light simultaneously. This reduces unnecessary power consumption and heat dissipation caused by the light-emitting elements 483 being constantly lit, and also increases the lifespan of the light source assembly 48.

[0191] The plurality of light-emitting elements 483 include a plurality of first light-emitting groups 4831 and a plurality of second light-emitting groups 4832. Along the second direction Y, the plurality of first light-emitting groups 4831 are arranged sequentially at intervals, and a second light-emitting group 4832 is provided between any two adjacent first light-emitting groups 4831. Along the third direction X, each first light-emitting group 4831 includes a plurality of first light-emitting elements 48310 arranged sequentially at intervals, and each second light-emitting group 4832 includes a plurality of second light-emitting elements 48320 arranged sequentially at intervals. Specifically, along the second direction Y, any one second light-emitting element 48320 is located between two adjacent first light-emitting elements 48310.

[0192] The first lens 485 includes a lens base 4851 and a plurality of lens protrusions 4852. Along the first direction Z, the lens base 4851 is disposed on the side of the light-emitting element 483 away from the lamp holder 482. The plurality of lens protrusions 4852 are arrayed on the side of the lens base 4851 away from the light-emitting element 483. The plurality of lens protrusions 4852 are arranged one-to-one with the plurality of light-emitting elements 483, so that the light emitted by each light-emitting element 483 is projected onto the corresponding lens protrusion 4852, so that the light emitted by each light-emitting element 483 can be straightened by the corresponding lens protrusion 4852, thereby improving the uniformity and collimation of the beam formed by the light emitted by the plurality of light-emitting elements 483.

[0193] Thus, the light source assembly 48 of this application, by providing multiple arrayed light-emitting elements 483, can improve the uniformity of the light emitted by the light source assembly 48. Furthermore, this application also provides multiple arrayed lens protrusions 4852, with each lens protrusion 4852 corresponding to one of the multiple light-emitting elements 483. This ensures that the light emitted by each light-emitting element 483 is projected onto the corresponding lens protrusion 4852, improving the collimation of the light emitted by each light-emitting element 483 and reducing the divergence angle of each light-emitting element 483. This further improves the collimation of the light emitted by the light source assembly 48 and enhances printing accuracy. Furthermore, the multiple first light-emitting elements 48310 and multiple second light-emitting elements 48320 in any adjacent first light-emitting group 4831 and second light-emitting group 4832 are staggered, so that the multiple light-emitting elements 483 are distributed in a honeycomb pattern. Compared with the multiple light-emitting elements 483 being distributed in a rectangular pattern, this distribution method adopted in this application can avoid obvious dark lines between the light spots emitted by each light-emitting element 483 due to the dispersion of light, which would affect the printing accuracy.

[0194] The second lens 484 is disposed between the light-emitting element 483 and the lens base 4851. The second lens 484 can be a polarizing lens. For example, a polarizing film is attached to a glass substrate to form the second lens 484, thereby reducing or eliminating surface reflection and other phenomena of light emitted by the light-emitting element 483.

[0195] Along the first direction Z, the projections of multiple light-emitting elements 483 onto the lamp holder 482 are located within the range of the projection of the second lens 484 onto the lamp holder 482, so as to ensure that the light emitted by each light-emitting element 483 passes through the second lens 484 before being directed to the first lens 485.

[0196] In this embodiment, along the first direction Z, the end of the light-emitting element 483 away from the lamp holder 482 abuts against the second lens 484, making the thickness of the entire light source assembly 48 smaller, reducing the volume and heat of the light source assembly 48, and improving the heat dissipation efficiency of the light source assembly 48.

[0197] Furthermore, the light source assembly 48 also includes a light-shielding member 486, which surrounds the outer peripheral surface of the second lens 484. The light-shielding member 486 is made of an opaque material and is generally a hollow columnar structure with openings at both ends. The second lens 484 is disposed inside the light-shielding member 486 so that external light is blocked from entering the second lens 484, ensuring that the light passing through the second lens 484 and striking the first lens 485 is emitted by the light-emitting member 483, thus preventing external light from affecting the light emission effect of the light source assembly 48.

[0198] Please combine Figure 22 And see Figure 15 , Figures 17 to 19In one embodiment, the tray assembly 40 further includes a circuit assembly 80. A heat dissipation cavity 413 is provided at the end of the base 41 away from the material frame 42. The circuit assembly 80 is disposed in the heat dissipation cavity 413 and is electrically connected to the screen assembly 47 and the light source assembly 48.

[0199] Along the second direction Y, the inner wall of one side of the heat sink 49 is spaced apart from the inner wall of one side of the adjacent base 41, forming a wiring space 417 between them. The wiring space 417 connects the mounting groove 411 and the heat dissipation cavity 413.

[0200] A first conductive sheet 4720 is provided on the printing screen 472, and a second conductive sheet 4820 is provided on the lamp holder 482. Both the first conductive sheet 4720 and the second conductive sheet 4820 have an "L"-shaped structure. One end of the first conductive sheet 4720 is electrically connected to the printing screen 472, and the other end is electrically connected to the circuit assembly 80. One end of the second conductive sheet 4820 is electrically connected to the lamp holder 482, and the other end is electrically connected to the circuit assembly 80, so that the circuit assembly 80, located in different chambers, can supply power to the screen assembly 47 and the light source assembly 48. This method of separating the circuit assembly 80 from the screen assembly 47 and the light source assembly 48 can avoid the circuit assembly 80 generating high temperatures during operation, which would affect the normal operation of the screen assembly 47 and the light source assembly 48.

[0201] Specifically, the circuit assembly 80 includes a circuit board 81 and a third conductive plate 82. The circuit board 81 is mounted on the bottom wall of the heat dissipation cavity 413, and the third conductive plate 82 extends along the second direction Y to near the wiring space 417. There are two third conductive plates 82. One end of the third conductive plate 82 is electrically connected to the circuit board 81, and the other end is electrically connected to the first conductive plate 4720. The other third conductive plate 82 is electrically connected to the circuit board 81, and the other end is electrically connected to the second conductive plate 4820.

[0202] In this embodiment, the bottom wall of the heat dissipation cavity 413 is provided with a plurality of heat dissipation fins 414. The heat dissipation fins 414 are made of thermally conductive material and are thermally coupled to the base 41, enabling the heat generated by the base 41 to be transferred to the heat dissipation fins 414. The plurality of heat dissipation fins 414 are arranged parallel to each other and spaced apart, so as to form an airflow channel 415 between any two adjacent heat dissipation fins 414. When cold air flows through the airflow channel 415, the cold air will carry away the heat on the heat dissipation fins 414 that form the airflow channel 415.

[0203] Multiple heat dissipation fins 414 are arranged around the circuit assembly 80 to improve the heat dissipation effect of the circuit assembly 80. For example, the multiple heat dissipation fins 414 are divided into two groups along the third direction X, and the two groups of heat dissipation fins 414 are arranged at intervals, with the circuit assembly 80 located between the two groups of heat dissipation fins 414.

[0204] The airflow channel 415 extends parallel to the third direction X. One end of the airflow channel 415 passes through the base 41 along the third direction X, and the other end is equipped with a fan 416. The fan 416 is mounted on the base 41 and is a centrifugal fan. The inlet end of the fan 416 is positioned along the third direction X towards one end of the airflow channel 415, and the outlet end of the fan 416 is positioned downwards along the first direction Z, so that the hot airflow formed by carrying away heat from the heat dissipation fins 414 is discharged from the bottom of the 3D printing equipment 200. Furthermore, along the third direction X, a heat dissipation vent 492 is provided on one side of the heat sink 49. The heat dissipation vent 492 extends from the outer surface of the heat sink 49 to its inner cavity, allowing cold air from outside the heat sink 49 to enter the airflow channel 415 through the heat dissipation vent 492, thereby carrying away heat from the heat dissipation fins 414 and completing the heat dissipation of the base 41.

[0205] Specifically, the bottom end of the base 41 is provided with a base plate 412, which is detachably connected to the base 41, thereby sealing the heat dissipation cavity 413. The base plate 412 is provided with an air outlet 4120, which penetrates the base plate 412 along the first direction Z, and is positioned towards the air outlet end of the fan 416, so that the fan 416 can guide the hot air leaving the airflow channel 415 to be discharged from the air outlet 4120.

[0206] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. A 3D printer stand, characterized in that, include: A movable component includes a first mounting base, a transmission structure, and a movable member. The transmission structure is connected to the first mounting base and is throttle-connected to the movable member for driving the movable member to move along a first direction. The connection component is configured to connect to the platform component. The base is configured to connect to the tray assembly; The movable component is configured to be detachably connected to either the connecting component or the base, and the first mounting base is configured to be detachably connected to the other of the connecting component and the base.

2. The 3D printer stand as described in claim 1, characterized in that, Both the first mounting base and the movable component are provided with a first connecting structure, and both the connecting component and the base are provided with a second connecting structure. The first connecting structure of the movable component is detachably connected to the second connecting structure of either the connecting component or the base, and the first connecting structure of the first mounting base is detachably connected to the second connecting structure of the other of the connecting component and the base.

3. The 3D printer stand as described in claim 2, characterized in that, The first connection structure is a first connection hole provided on the first mounting base and the movable part; the second connection structure is a second connection hole provided on the connection assembly and the base. The 3D printer frame also includes fasteners that pass through the first connection hole and the second connection hole, and the fasteners are configured to thread into the first connection hole and the second connection hole.

4. The 3D printer stand as described in claim 2, characterized in that, The first mounting base and the movable component are further provided with a first positioning hole, and the connecting component and the base are further provided with a second positioning hole; The 3D printer frame also includes a positioning element, which passes through the first positioning hole and the second positioning hole.

5. The 3D printer stand as described in claim 1, characterized in that, The transmission structure includes a transmission component and a transmission pair, wherein the transmission component is connected to the first mounting base; The 3D printer frame also includes a drive assembly, which is tractively connected to the transmission member and provides driving force to the transmission member. The transmission member is tractively connected to the transmission pair. Based on the driving force, the transmission member drives the transmission pair to move along the first direction. The moving member is detachably connected to the transmission pair.

6. The 3D printer stand as described in claim 1, characterized in that, The number of the movable components is set to two, and the movable parts of the two movable components are detachably connected to one of the connecting component and the base, and the first mounting bases of the two movable components are detachably connected to the other of the connecting component and the base; The 3D printer frame also includes a drive assembly, which is driveably connected to the transmission structure of the two moving components.

7. The 3D printer frame as described in claim 1, characterized in that, The connection component includes: A support frame is detachably connected to the movable component or the first mounting base; The movable component is movably connected to the support frame along the first direction; The platform component is at least partially disposed between the support frame and the movable member and configured to be clamped.

8. The 3D printer stand as described in claim 7, characterized in that, The 3D printer frame also includes a limiting component, which is disposed on the support frame or the movable component. The limiting component movably abuts against the platform component to limit the platform component at least in a second direction, which intersects with the first direction.

9. The 3D printer stand as described in claim 7, characterized in that, The 3D printer stand also includes an unlocking component movably connected to the support frame, the unlocking component being configured to resist the movable part moving away from the support frame.

10. A 3D printing device, characterized in that, The device includes a platform assembly, a tray assembly, and a 3D printer carriage as claimed in any one of claims 1 to 9, wherein the platform assembly and the tray assembly are spaced apart along the first direction, and a moving component in the 3D printer carriage is configured to drive one of the platform assembly and the tray assembly toward or away from the other.

11. The 3D printing equipment as described in claim 10, characterized in that, The platform assembly is configured to deposit and cure consumables into a printed part. The platform assembly includes a first platform and a second platform, which are configured to move relative to each other in a first direction for removing the printed part formed on the platform assembly.

12. The 3D printing equipment as described in claim 11, characterized in that, The 3D printing equipment also includes a demolding structure, which is drively connected to one of the first platform and the second platform. Along the first direction, the demolding structure is configured to drive one of the first platform and the second platform to move relative to the other.

13. The 3D printing equipment as described in claim 10, characterized in that, The base has a mounting groove on the side near the platform assembly, and the tray assembly includes: Release film is disposed within the mounting groove; A material frame is connected to one end of the base near the platform assembly. The material frame is configured to press the release film onto the base. The material frame is arranged around the release film and the material frame and the release film together form a material groove.

14. The 3D printing equipment as described in claim 13, characterized in that, The release film includes a film portion and a frame portion, the frame portion being disposed around the outer peripheral surface of the film portion, and the frame portion being integrally formed with the film portion; The frame portion is clamped between the material frame and the base, and the membrane portion is formed by surrounding the inner peripheral wall of the material frame with the side surface of the platform assembly to form the material trough.

15. The 3D printing equipment as described in claim 14, characterized in that, The tray assembly further includes a first pressure ring and a second pressure ring. Along the first direction, the first pressure ring and the second pressure ring are spaced apart, and the frame portion of the release film is clamped between the first pressure ring and the second pressure ring. Along the first direction, the first pressure ring and the second pressure ring are clamped between the base and the material frame.

16. The 3D printing equipment as described in claim 13, characterized in that, The platform component has a limiting member on its side wall, and the limiting member has a limiting surface at one end facing the material tray component, and the platform component has a forming surface at one end facing the material tray component. The first distance between the limiting surface and the end face of the material frame near the platform assembly is less than the second distance between the forming surface and the release film.

17. The 3D printing equipment as described in claim 13, characterized in that, The tray assembly also includes: A screen assembly is located within the mounting slot, and along the first direction, the screen assembly is disposed on the side of the release film away from the platform assembly; A light source assembly is located within the mounting groove, and along the first direction, the light source assembly is spaced apart on the side of the screen assembly away from the release film.

18. The 3D printing equipment as described in claim 17, characterized in that, The 3D printing equipment also includes a circuit assembly connected to the end of the base away from the platform assembly, and the circuit assembly is electrically connected to the light source assembly and the screen assembly; The base has a heat dissipation structure at the end away from the platform component, and the heat dissipation structure is arranged around the circuit component.

19. The 3D printing equipment as described in claim 17, characterized in that, The light source assembly includes multiple light-emitting elements, and the multiple light-emitting elements are distributed in an array.

20. The 3D printing equipment as described in claim 19, characterized in that, The light source assembly further includes a first lens, which includes a lens base and a plurality of lens protrusions. The lens base is located on the light-emitting side of the light-emitting element, and the plurality of lens protrusions are arranged in an array on the side of the lens base away from the light-emitting element, and the plurality of lens protrusions are arranged in a one-to-one correspondence with the plurality of light-emitting elements.

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