3D printing platform and 3D printing device

Abstract

This application provides a 3D printing platform and a 3D printing device. The 3D printing platform includes a support frame, a movable component, a platform assembly, and a limiting component. The movable component is movably connected to the support frame along a first direction. The platform assembly is at least partially disposed between the support frame and the movable component and configured to be clamped. The limiting component is disposed on the support frame or the movable component and movably abuts against the platform assembly to limit the platform assembly at least in a second direction, the second direction intersecting the first direction.

Description

Technical Field

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

[0002] The printing platform of a 3D printing machine needs to be mounted on the Z-axis lifting module of the 3D printing machine via a connecting structure to enable the lifting of the printing platform. However, most current printing platforms are fixed to the connecting structure with screws or other components, making it inconvenient to assemble and disassemble the printing platform from the connecting structure. Utility Model Content

[0003] This application provides a 3D printing platform and 3D printing equipment to solve the problem of inconvenient disassembly and assembly of printing platforms in known technologies.

[0004] In a first aspect, this application provides a 3D printing platform, including a support frame, a movable component, a platform assembly, and a limiting component. The movable component is movably connected to the support frame along a first direction. The platform assembly is at least partially disposed between the support frame and the movable component and configured to be clamped. The limiting component is disposed on the support frame or the movable component and movably abuts against the platform assembly to limit the platform assembly at least in a second direction, the second direction intersecting the first direction.

[0005] In one possible implementation, the 3D printing platform further includes a first elastic element, one end of which is elastically connected to the movable element, the first elastic element being configured to provide an elastic force to the movable element to move toward one side of the support frame.

[0006] In one possible implementation, the limiting component includes a second elastic member, the first end of which is elastically connected to the support frame or the movable member, and the platform component is provided with a limiting groove, the second end of which is engaged in the limiting groove.

[0007] In one possible implementation, along the second direction, the two opposing inner walls of the limiting groove are configured as a first abutting wall and a second abutting wall, both the first abutting wall and the second abutting wall being inclined, and both the first abutting wall and the second abutting wall being configured to abut against the second elastic member.

[0008] In one possible implementation, the 3D printing platform 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.

[0009] In one possible implementation, as the unlocking component moves away from the movable member away from the support frame until it no longer abuts the platform component, the second end of the second elastic member remains engaged within the limiting groove.

[0010] In one possible implementation, the unlocking component includes:

[0011] A rotating shaft is mounted on the support frame, and the extension direction of the rotating shaft is parallel to a third direction, which intersects with the first direction and the second direction.

[0012] The unlocking component has one end that movably abuts against the movable component, and the middle section of the unlocking component is rotatably connected to the pivot.

[0013] In one possible implementation, the platform assembly includes a first platform and a second platform, the first platform and the second platform being at least partially clamped between the support frame and the movable component;

[0014] Along the first direction, the first platform and the second platform can move relative to each other to allow the printed parts formed on the platform assembly to fall off.

[0015] In one possible implementation, the first platform includes a first main body and a first extension, the first extension being connected to the first main body and at least partially clamped between the support frame and the movable member, the limiting component being disposed on the movable member and the limiting component being movably abutting the first extension.

[0016] The first extension is provided in two parts, which are arranged at intervals along a third direction. The third direction intersects the first direction and the second direction. The support frame is at least partially disposed between the two first extensions, and the two first extensions abut against opposite sides of the support frame along the third direction.

[0017] In one possible implementation, the 3D printing platform 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.

[0018] In one possible implementation, along a third direction, the demolding structure is at least located on one side of the first platform and is rotatably connected to the first platform, the second platform is at least partially located on the rotation path of the demolding structure, and the third direction intersects the first direction and the second direction;

[0019] Wherein, based on the rotation of the demolding structure relative to the first platform, the demolding structure can drive the second platform to move relative to the first platform along a first direction.

[0020] Secondly, embodiments of this application also provide a 3D printing device, including a moving component, a material tray component, and the aforementioned 3D printing platform. The moving component is tractively connected to the 3D printing platform to drive the 3D printing platform to move closer to or away from the material tray component along the first direction.

[0021] 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.

[0022] The material tray assembly has a material groove at one end facing the platform assembly, and the first distance between the limiting surface and the end face of the material tray assembly facing the platform assembly is smaller than the second distance between the forming surface and the bottom wall of the material groove.

[0023] The 3D printing platform of this application clamps or releases the platform component by moving a movable part relative to the support frame in a first direction, thereby achieving relative fixation between the platform component and the support frame. This connection method eliminates the need for screws or other fasteners, improving the efficiency of assembling and disassembling the platform component relative to the support frame. Furthermore, this application uses a limiting component to limit the platform component at least in a second direction, preventing the platform component from moving directly relative to the support frame after the movable part releases it. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the 3D printing platform of this application in one embodiment.

[0025] Figure 2 This is a structural schematic diagram of the 3D printing platform of this application from another perspective in one embodiment.

[0026] Figure 3 This is an exploded view of the 3D printing platform of this application in one embodiment.

[0027] Figure 4 for Figure 1 A cross-sectional view of the 3D printing platform along the IV-IV direction.

[0028] Figure 5 This is a schematic diagram of the platform components in one embodiment of the 3D printing platform of this application.

[0029] Figure 6 This is a bottom view of a platform component in one embodiment of the 3D printing platform of this application.

[0030] Figure 7 for Figure 5 A schematic diagram of the structure of the first extension of the 3D printing platform in one embodiment.

[0031] Figure 8 This is a schematic diagram of the 3D printing platform of this application in another embodiment, wherein the 3D printing platform is provided with a demolding structure.

[0032] Figure 9 This is a schematic diagram of the structure of the 3D printing device of this application in one embodiment.

[0033] Figure 10 This is a schematic diagram of the structure of the 3D printing equipment of this application in one embodiment, in which the platform component and the material tray component are in a supporting state.

[0034] Figure 11 for Figure 10 A cross-sectional view of the 3D printing equipment along the X-X direction.

[0035] Figure 12 for Figure 11 A magnified view of a portion of area A corresponding to the 3D printing equipment in the diagram.

[0036] Key component symbols: 200, 3D printing equipment; 100, 3D printing platform; 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; 10, platform assembly; 11, first platform; 111, first main body; 1110, through hole; 112, first extension; 1121, first... 1122. Vertical part; 1123. First horizontal part; 1124. Positioning groove; 1125. Limiting groove; 1126. First demolding hole; 1127. Second demolding hole; 113. Limiting element; 114. Movable cavity; 12. Second platform; 121. Second main body part; 1210. Protrusion; 122. Second extension part; 1221. Second vertical part; 1222. Second horizontal part; 1223. Third demolding hole; 1224. Fourth demolding hole; 13. Demolding structure; 1 31. Rotating handle; 132. First rotating shaft; 133. Second rotating shaft; 14. Clearance; 21. Support frame; 211. Mounting part; 212. Mounting protrusion; 213. First receiving groove; 214. Second receiving groove; 215. Support part; 22. Moving part; 221. First section; 2211. Abutting groove; 2212. First through hole; 2213. Second through hole; 222. Second section; 30. First elastic element; 40. Guide element; 41. Abutting 50. Holding part; 51. Unlocking component; 510. Unlocking part; 52. Rotating hole; 60. Rotating shaft; 61. Limiting component; 61. Second elastic element; 611. Connecting part; 612. Elastic part; 70. Moving component; 71. Driving mechanism; 72. Moving part; 80. Material tray assembly; 81. Material frame; 810. Material trough; 82. Optical module; 83. Release film; 84. Molding cavity; 91. Base; 910. Mounting groove; 92. Frame; 920. Limiting protrusion.

[0037] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0042] like Figures 1 to 3 As shown, and see also Figure 8 This embodiment provides a 3D printing platform 100, applied to a 3D printing device 200. The 3D printing device 200 is applied in the field of photopolymer 3D printing and includes a moving component 70. The 3D printing platform 100 includes a platform component 10, a support frame 21, a movable component 22, and a limiting component 60. The support frame 21 is connected to the moving component 70, and the platform component 10 is relatively fixed to the support frame 21 via the movable component 22, so that the moving component 70 enables the platform component 10 to move.

[0043] 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.

[0044] Platform assembly 10 is configured to be deposited and cured into a printout, the consumable being a resin or other material used in photopolymer printing. Movable member 22 is movably connected to support frame 21 along the first direction Z. Platform assembly 10 is at least partially disposed between support frame 21 and movable member 22 and configured to be clamped, thereby clamping or releasing platform assembly 10 by movement of movable member 22 relative to support frame 21.

[0045] The limiting component 60 is provided on the support frame 21 or the movable part 22. The limiting component 60 actively abuts against the platform component 10 to limit the platform component 10 at least in the second direction Y.

[0046] Thus, the 3D printing platform 100 of this application clamps or releases the platform assembly 10 by moving the movable part 22 relative to the support frame 21 in the first direction Z, thereby achieving relative fixation between the platform assembly 10 and the support frame 21. This connection method eliminates the need for screws or other components for fixation, improving the efficiency of assembly and disassembly of the platform assembly 10 relative to the support frame 21. Furthermore, this application uses a limiting component 60 to limit the platform assembly 10 at least in the second direction Y, preventing the platform assembly 10 from moving directly relative to the support frame 21 after the movable part 22 releases it.

[0047] Please combine Figures 1 to 3 And see Figure 8 In one embodiment, the platform assembly 10 includes a first platform 11 and a second platform 12. One surface of the first platform 11 and one 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 to form 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.

[0048] The support frame 21 extends parallel to the second direction Y. One end of the support frame 21 is connected to the movable component 70, 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 70 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] Please combine Figures 2 to 4In one embodiment, the 3D printing platform 100 further includes a first elastic member 30, one end of which is elastically connected to the movable member 22. The first elastic member 30 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 30, thereby preventing the first platform 11 and the second platform 12 from shaking.

[0054] Furthermore, the 3D printing platform 100 also includes a guide member 40. The extension direction of the guide member 40 is parallel to the first direction Z. One end of the guide member 40 is connected to the support frame 21, and the other end of the guide member 40 passes through the movable member 22. The first elastic member 30 is a compression spring. One end of the first elastic member 30 is elastically connected to the guide member 40, and the other end is elastically connected to the movable member 22.

[0055] 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 40 is fixed to the bottom wall of the second receiving groove 214. A first through hole 2212 is provided on the first section 221, which extends along the first direction Z and penetrates the first section 221. The top end of the guide member 40 protrudes through the first through hole 2212, and the end of the guide member 40 protruding through the first through hole 2212 is provided with a supporting part 41, the outer diameter of which is larger than the outer diameter of the guide member 40.

[0056] 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 30 is sleeved on the outer peripheral surface of the guide member 40 and is elastically compressed between the stepped surface P1 and the supporting part 41.

[0057] In this embodiment, the number of guide members 40 is set to two, and the two guide members 40 are spaced apart along the third direction X. Correspondingly, the number of first elastic members 30 is set to two.

[0058] It is understood that in other embodiments, the number of guide members 40 and first elastic members 30 may also be one or three, or other quantities.

[0059] Please combine Figures 1 to 3 In one embodiment, the 3D printing platform 100 further includes an unlocking component 50, which is movably connected to the support frame 21. The unlocking component 50 is configured to resist the movement of the movable member 22 toward the side away from the support frame 21, so that the movable member 22 moves away from the support frame 21 by the unlocking component 50 overcoming the elastic force applied to it by the first elastic member 30, thereby preventing the movable member 22 from pressing the first platform 11 and the second platform 12 against the support frame 21.

[0060] Specifically, the unlocking component 50 includes an unlocking element 51 and a hinge 52.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] Please combine Figures 3 to 6 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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 force between the platform assembly 10 and the release film 83 of the material tray assembly 80, which can deform the release film 83 and easily cause resin splashing and other problems.

[0074] 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.

[0075] Please combine Figures 3 to 6 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] Please combine Figure 7 And see Figures 1 to 3 In one embodiment, the 3D printing platform 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] Please combine Figures 3 to 6 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] Please combine Figure 8 In another embodiment, the 3D printing platform 100 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] like Figures 9 to 12 As shown, and see also Figure 3This application embodiment also provides a 3D printing device 200, including a moving component 70, a material tray assembly 80, and the aforementioned 3D printing platform 100. The moving component 70 is connected to the support frame 21 of the 3D printing platform 100 to drive the platform assembly 10 of the 3D printing platform 100 to move closer to or away from the material tray assembly 80 along a first direction Z.

[0103] In this embodiment, the moving component 70 includes a drive mechanism 71 and a moving member 72. The drive mechanism 71 is a lead screw linear slide, arranged along the first direction Z, and has a power-off self-locking function. The moving member 72 is tractively connected to the drive mechanism 71, so that the drive mechanism 71 drives the moving member 72 to move up and down along the first direction Z.

[0104] There are two movable components 70, spaced apart along the third direction X. The movable parts 72 of both movable components 70 are connected to the support frame 21, so that the support frame 21 can be moved synchronously by the two movable components 70 along the first direction Z.

[0105] The support frame 21 and the movable part 72 can be connected by fasteners such as screws to achieve a detachable design for the support frame 21.

[0106] In this embodiment, the 3D printing equipment 200 further includes a base 91 and a frame 92. The base 91 is horizontally arranged, and the frame 92 is arranged along a first direction Z, with the bottom end of the frame 92 connected to the base 91. The frame 92 and the base 91 can be integrally formed or detachably connected. Both moving components 70 are mounted on one side of the frame 92 along a second direction Y.

[0107] A limiting protrusion 920 protrudes from the side of the frame 92 facing the moving component 70. The limiting protrusion 920 is located on the lifting path of the unlocking member 51 at the end away from the rotating shaft 52. When the moving component 70 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 920, the moving component 70 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 920 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. In this way, the setting of the limiting protrusion 920 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 920.

[0108] The top surface of the base 91 is provided with a mounting groove 910, and the tray assembly 80 is placed in the mounting groove 910. Limiting members 113 are respectively provided on opposite sides of the two first extensions 112 of the first platform 11. A limiting surface P2 is provided at the end of the limiting member 113 facing the tray assembly 80.

[0109] The tray assembly 80 includes a material frame 81, an optical module 82, and a release film 83. The material frame 81 is placed in a mounting groove 910, and a material groove 810 is formed on the top surface of the material frame 81. The optical module 82 and the release film 83 are placed in the material groove 810, with the release film 83 located on top. The optical module 82 can irradiate photocurable materials such as resin to obtain various cured layers of the desired pattern. After the various cured layers are stacked, a printed part is formed.

[0110] The first distance between the limiting surface P2 and the end face of the material frame 81 facing the platform assembly 10 is less than the second distance between the molding surface P5 and the top surface of the release film 83, so that when the limiting surface P2 and the end face of the material frame 81 facing the platform assembly 10 are abutting, there is a molding cavity 84 between the molding surface P5 and the release film 83.

[0111] 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 80 are limited by the four limiting members 113.

[0112] Optionally, the difference between the first spacing and the second spacing is 0.3mm, that is, the height of the forming cavity 84 is 0.3mm. On the one hand, this ensures that when the platform assembly 10 descends, the limiting member 113 first contacts the upper edge of the material frame 81, preventing the platform assembly 10 from hitting the screen and other structures of the optical module 82 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 81, so that the forming surface P5 and the top surface of the release film 83 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.

[0113] It is understandable that, in addition to the above-mentioned structures, the 3D printing equipment 200 also includes other supporting structures for photopolymerization printing.

[0114] 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 printing platform, characterized in that, include: Support frame; The movable component is movably connected to the support frame along the first direction; A platform component, at least partially disposed between the support frame and the movable member, and configured to be clamped; A limiting component is provided on the support frame or the movable component, the limiting component movably abutting against the platform component to limit the platform component at least in a second direction, the second direction intersecting the first direction.

2. The 3D printing platform as described in claim 1, characterized in that, The 3D printing platform further includes a first elastic element, one end of which is elastically connected to the movable element. The first elastic element is configured to provide an elastic force to the movable element to move toward one side of the support frame.

3. The 3D printing platform as described in claim 2, characterized in that, The limiting component includes a second elastic element, the first end of which is elastically connected to the support frame or the movable element. The platform component is provided with a limiting groove, and the second end of the second elastic element is engaged in the limiting groove.

4. The 3D printing platform as described in claim 3, characterized in that, Along the second direction, the two opposing inner walls of the limiting groove are configured as a first abutting wall and a second abutting wall. Both the first abutting wall and the second abutting wall are inclined and configured to abut the second elastic member.

5. The 3D printing platform as described in claim 3, characterized in that, The 3D printing platform 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.

6. The 3D printing platform as described in claim 5, characterized in that, During the process of the unlocking component moving away from the movable part away from the support frame until it no longer supports the platform component, the second end of the second elastic member is always engaged in the limiting groove.

7. The 3D printing platform as described in claim 5, characterized in that, The unlocking component includes: A rotating shaft is mounted on the support frame, and the extension direction of the rotating shaft is parallel to a third direction, which intersects with the first direction and the second direction. The unlocking component has one end that movably abuts against the movable component, and the middle section of the unlocking component is rotatably connected to the pivot.

8. The 3D printing platform as described in claim 2, characterized in that, The 3D printing platform also includes a guide member, the extension direction of which is parallel to the first direction. One end of the guide member is connected to the support frame, and the other end of the guide member passes through the movable member. One end of the first elastic member is elastically connected to the guide member, and the other end of the first elastic member is elastically connected to the movable member.

9. The 3D printing platform as described in claim 1, characterized in that, The platform component includes a first platform and a second platform, both of which are at least partially clamped between the support frame and the movable component. Along the first direction, the first platform and the second platform can move relative to each other to allow the printed parts formed on the platform assembly to fall off.

10. The 3D printing platform as described in claim 9, characterized in that, The first platform includes a first main body and a first extension. The first extension is connected to the first main body and is at least partially clamped between the support frame and the movable member. The limiting component is disposed on the movable member and the limiting component movably abuts against the first extension. The first extension is provided in two parts, which are arranged at intervals along a third direction. The third direction intersects the first direction and the second direction. The support frame is at least partially disposed between the two first extensions, and the two first extensions abut against opposite sides of the support frame along the third direction.

11. The 3D printing platform as described in claim 9, characterized in that, The 3D printing platform 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.

12. The 3D printing platform as described in claim 11, characterized in that, Along a third direction, the demolding structure is at least located on one side of the first platform, and the demolding structure is rotatably connected to the first platform. The second platform is at least partially located on the rotation path of the demolding structure, and the third direction intersects with the first direction and the second direction. Wherein, based on the rotation of the demolding structure relative to the first platform, the demolding structure can drive the second platform to move relative to the first platform along a first direction.

13. A 3D printing device, characterized in that, The device includes a moving component, a tray assembly, and a 3D printing platform as claimed in any one of claims 1 to 12, wherein the moving component is kinetically connected to the 3D printing platform to drive the 3D printing platform toward or away from the tray assembly along the first direction.

14. 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 material tray assembly has a material groove at one end facing the platform assembly, and the first distance between the limiting surface and the end face of the material tray assembly facing the platform assembly is smaller than the second distance between the forming surface and the bottom wall of the material groove.

Images