Three-dimensional printer

Abstract

The utility model relates to a three-dimensional printer which comprises a printing platform assembly used for receiving materials extruded by a printing head assembly, and the printing platform assembly is provided with a first side and a second side which are oppositely arranged; the first lifting assembly is hinged to the first side of the printing platform assembly; the second lifting assembly is hinged to the second side of the printing platform assembly; the first driving assembly is in transmission connection with the first lifting assembly and used for driving the first lifting assembly to move in the first direction; the second driving assembly is in transmission connection with the second lifting assembly and used for driving the second lifting assembly to move in the first direction; the first driving assembly and the second driving assembly can drive the first lifting assembly and the second lifting assembly correspondingly so as to adjust the included angle between the printing platform assembly and the printing head assembly. The included angle between the printing platform assembly and the printing head assembly can be adjusted, support-free printing is achieved, use is more convenient, the printing efficiency is improved, and the printing cost and the demolding difficulty are reduced.

Description

Technical Field

[0001] This application relates to the field of stereoscopic printing, and in particular to a stereoscopic printer. Background Technology

[0002] In fused deposition modeling (FDM), thermoplastic filament is melted by a heated printhead assembly and deposited layer by layer onto a printing platform assembly to form a three-dimensional model.

[0003] In related technologies, the printhead assembly can only print perpendicular to the print platform assembly. If a model with a certain tilt angle to the print platform assembly is to be printed, a support assembly must be added to the print platform assembly. The printhead assembly prints the tilted part of the model onto the support assembly, which not only reduces printing efficiency and increases printing costs, but also increases the difficulty of demolding. Utility Model Content

[0004] This application provides a 3D printer that enables supportless printing, making it more convenient to use, improving printing efficiency, reducing printing costs, and simplifying demolding.

[0005] The 3D printer provided in this application includes:

[0006] A printing platform assembly for receiving material extruded from a printhead assembly, the printing platform assembly having a first side and a second side disposed opposite to each other;

[0007] The first lifting component is hinged to the first side of the printing platform component;

[0008] The second lifting component is hinged to the second side of the printing platform component;

[0009] A first drive assembly, transmissionally connected to the first lifting assembly, is used to drive the first lifting assembly to move along a first direction; and

[0010] The second drive assembly is connected to the second lifting assembly and is used to drive the second lifting assembly to move along the first direction;

[0011] The first driving component and the second driving component can drive the first lifting component and the second lifting component respectively to adjust the angle between the printing platform component and the print head component.

[0012] In some embodiments, the first lifting assembly includes two first lifting parts, which are respectively hinged to the printing platform assembly and symmetrically arranged at both ends of the first side of the printing platform assembly.

[0013] The first driving component is used to drive the two first lifting parts to move synchronously along the first direction, or the first driving component is used to drive the two first lifting parts to move separately along the first direction.

[0014] In some embodiments, the first lifting part includes a first body and two first connecting arms respectively connected to the first body, the two first connecting arms being spaced apart in the third direction to form a first mounting groove, and the printing platform assembly including a first hinge part hinged in the first mounting groove.

[0015] The first hinge portion has first clearance grooves on both sides in the third direction, and the first connecting arm is inserted into the corresponding first clearance groove.

[0016] In some embodiments, the first drive assembly includes two first transmission parts extending along the first direction, and the two first transmission parts are connected to the two first lifting parts in a one-to-one transmission connection.

[0017] The first driving assembly further includes a first driving part connected to the two first transmission parts. The first driving part is used to drive the two first transmission parts to rotate synchronously around the first direction, so that the two first lifting parts move synchronously along the first direction; or, the first driving assembly further includes two first driving parts, which are connected one-to-one with the two first transmission parts. The two first driving parts are used to drive the corresponding first transmission parts to rotate around the first direction, so that the two first lifting parts move along the first direction respectively.

[0018] In some embodiments, the second lifting assembly includes a second lifting section hinged to the middle of the second side of the printing platform assembly.

[0019] In some embodiments, the second drive assembly includes a second transmission part and a second drive part, the second transmission part extending along the first direction and being drively connected to the second lifting part, the second drive part being connected to the second transmission part, and the second drive part being used to drive the second transmission part to rotate about the first direction, so that the second lifting part moves along the first direction.

[0020] In some embodiments, the second lifting assembly includes two second lifting parts, which are respectively hinged to the printing platform assembly and symmetrically arranged at both ends of the second side of the printing platform assembly;

[0021] The second drive component is used to drive the two second lifting parts to move synchronously along the first direction, or the second drive component is used to drive the two second lifting parts to move separately along the first direction.

[0022] In some embodiments, the second drive assembly includes two second transmission parts extending along the first direction, and the two second transmission parts are connected to the two second lifting parts in a one-to-one transmission connection.

[0023] The second drive assembly further includes a second drive unit connected to the two second transmission units. The second drive unit is used to drive the two second transmission units to rotate synchronously around the first direction, so that the two second lifting units move synchronously along the first direction. Alternatively, the second drive assembly further includes two second drive units, which are connected one-to-one with the two second transmission units. The two second drive units are used to drive the corresponding second transmission units to rotate around the first direction, so that the two second lifting units move along the first direction respectively.

[0024] In some embodiments, the second lifting part includes a second body and two second connecting arms respectively connected to the second body, the two second connecting arms being spaced apart in the third direction to form a second mounting groove, and the printing platform assembly including a second hinge part hinged in the second mounting groove;

[0025] The second hinge portion has second clearance grooves on both sides in the third direction, and the second connecting arm is inserted into the corresponding second clearance groove.

[0026] In some embodiments, the printing platform component includes:

[0027] The base portion is hinged to the first lifting assembly and the second lifting assembly, respectively;

[0028] A printing panel for receiving the material, the printing panel being rotatably connected to the base; and

[0029] The third drive unit is used to drive the printing panel to rotate around the central axis of the printing panel.

[0030] In some embodiments, the printing panel includes a platform plate and a medium layer covering the surface of the platform plate, the medium layer being used to receive the material;

[0031] The base includes a heat-conducting plate, a heating element, and a seat arranged sequentially along the first direction, wherein the heat-conducting plate is attached to the platform plate, and the seat is hinged to the first lifting assembly and the second lifting assembly respectively.

[0032] In some embodiments, the printing platform assembly includes a printing panel having a printing surface for receiving the material, the normal direction of the printing surface having an angle between the normal direction of the printing surface and the extrusion direction of the printhead assembly, the angle being 0°-60°.

[0033] In some embodiments, the 3D printer further includes a motion component and a frame component;

[0034] The motion component is used to drive the printhead assembly to move along a second direction and / or a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other;

[0035] The frame assembly includes a first frame portion extending along the first direction, a second frame portion extending along the second direction, a third frame portion extending along the third direction, and a connecting portion connecting the first frame portion, the second frame portion, and the third frame portion.

[0036] The motion component is mounted on the connecting part.

[0037] In some embodiments, the connecting portion includes an integrally formed body and a mounting bracket;

[0038] The body has an outer side and an inner side that are arranged opposite to each other;

[0039] The mounting bracket is formed on the inner side of the body and is used to mount the motion component;

[0040] The first frame portion, the second frame portion, and the third frame portion are detachably connected to the outside of the main body.

[0041] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: The 3D printer includes: a printing platform assembly for receiving the material extruded by the print head assembly, the printing platform assembly having a first side and a second side disposed opposite to each other; a first lifting assembly hinged to the first side of the printing platform assembly; a second lifting assembly hinged to the second side of the printing platform assembly; a first driving assembly drivenly connected to the first lifting assembly for driving the first lifting assembly to move along a first direction; and a second driving assembly drivenly connected to the second lifting assembly for driving the second lifting assembly to move along the first direction. Through the embodiments of this application, the first driving assembly and the second driving assembly can drive the first lifting assembly and the second lifting assembly respectively, so that the first lifting assembly and the lifting assembly have a height difference in the first direction, that is, so that the first side and the second side of the printing platform assembly have a height difference in the first direction, thereby making the printing platform assembly tilted relative to the print head assembly to achieve unsupported printing. The angle between the printing platform assembly and the print head assembly can be adjusted by the first driving assembly and the second driving assembly, making it more convenient to use, improving printing efficiency, reducing printing costs and demolding difficulty. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the 3D printer according to an embodiment of this application;

[0043] Figure 2 for Figure 1 A schematic diagram of a 3D printer from another perspective;

[0044] Figure 3 for Figure 1 A partial structural diagram of the 3D printer is shown;

[0045] Figure 4 for Figure 3 A schematic diagram of a 3D printer from another perspective;

[0046] Figure 5 for Figure 3 The cross-sectional view of the 3D printer shown;

[0047] Figure 6 This is a partial structural diagram of the 3D printer according to an embodiment of this application;

[0048] Figure 7 for Figure 1 A partial structural diagram of the 3D printer is shown;

[0049] Figure 8 for Figure 7 A partial structural diagram of the 3D printer is shown;

[0050] Figure 9 for Figure 8An enlarged view of the structure of a connecting part in the 3D printer shown;

[0051] Figure 10 for Figure 9 Another perspective view of the connecting part shown;

[0052] Wherein: 1-Printing platform assembly (101-First side, 102-Second side, 103-Base part (1031-Heat-conducting plate, 1032-Heating element, 1033-Seat body), 104-Printing panel part (1041-Media layer, 1042-Platform plate, 1043-Printing surface), 105-Third drive part, 106-First hinge part (1061-First clearance groove), 107-Second hinge part (1071-Second clearance groove)), 2-First lifting assembly (201-First lifting part (2011-First main body, 2012-First connecting arm, 2013-First mounting groove)), 3-Second lifting assembly (301-Second lifting part (3011-Second main body, 301...)). 2-Second connecting arm, 3013-Second mounting slot), 4-First drive assembly (401-First transmission part), 5-Second drive assembly (501-Second transmission part), 6-Print head assembly, 7-First rotating shaft, 8-First guide assembly (801-First guide part), 9-Second rotating shaft, 10-Second guide assembly (1001-Second guide part), 11-Motion assembly (1101-Belt, 1102-Idler pulley), 12-Frame assembly (1201-First frame part, 1202-Second frame part, 1203-Third frame part, 1204-Connecting part (12041-Body (120411-Outer side, 120412-Inner side), 12042-Mounting bracket)). Detailed Implementation

[0053] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0054] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0056] Please refer to Figures 1 to 6 This application embodiment of a 3D printer includes a printing platform assembly 1, a first lifting assembly 2, a second lifting assembly 3, a first drive assembly 4, and a second drive assembly 5. The printing platform assembly 1 receives material extruded from the printhead assembly 6 and has a first side 101 and a second side 102 disposed opposite to each other. The first lifting assembly 2 is hinged to the first side 101 of the printing platform assembly 1. The second lifting assembly 3 is hinged to the second side 102 of the printing platform assembly 1. The first drive assembly 4 is driveably connected to the first lifting assembly 2 and drives the first lifting assembly 2 to move along a first direction. The second drive assembly 5 is driveably connected to the second lifting assembly 3 and drives the second lifting assembly 3 to move along the first direction. The first drive assembly 4 and the second drive assembly 5 can respectively drive the first lifting assembly 2 and the second lifting assembly 3 to move, thereby adjusting the included angle α between the printing platform assembly 1 and the printhead assembly 6.

[0057] In this embodiment, the first driving component 4 and the second driving component 5 can drive the first lifting component 2 and the second lifting component 3 respectively, so that the first lifting component 2 and the lifting component have a height difference in the first direction. That is, the first side 101 and the second side 102 of the printing platform component 1 have a height difference in the first direction, thereby making the printing platform component 1 tilted relative to the print head component 6. The print head component 6 can directly print a model with a certain tilt angle between itself and the printing platform component 1 on the printing platform component 1, realizing supportless printing. The included angle α between the printing platform component 1 and the print head component 6 can be adjusted by the first driving component 4 and the second driving component 5, making it more convenient to use, improving printing efficiency, reducing printing costs and demolding difficulty.

[0058] As an example, the printhead assembly 6 can extrude material along a first direction, which is a vertical direction, i.e., the Z-direction. The first drive assembly 4 and the second drive assembly 5 can respectively drive the first lifting assembly 2 and the second lifting assembly 3, so that the first lifting assembly 2 and the second lifting drive assembly are at the same height, thereby making the first side 101 and the second side 102 of the printing platform assembly 1 at the same height, and thus making the printing platform assembly 1 parallel to the horizontal plane, i.e., making the printing platform assembly 1 perpendicular to the first direction. Please refer to... Figures 1 to 4The first drive assembly 4 and the second drive assembly 5 can also drive the first lifting assembly 2 and the second lifting assembly 3 respectively, so that the first lifting assembly 2 and the second lifting assembly 3 are at different heights, thereby placing the first side 101 and the second side 102 of the printing platform assembly 1 at different heights, and thus making the printing platform assembly 1 tilted relative to the horizontal plane. The included angle α between the printing platform assembly 1 and the printhead assembly 6 can be adjusted according to the actual situation through the first drive assembly 4 and the second drive assembly 5.

[0059] It should be noted that in other embodiments, the printhead assembly 6 can extrude material in other directions, which can be set according to the actual situation, and will not be elaborated here.

[0060] In some implementation methods, please refer to Figure 2 , Figure 3 and Figure 6 The first lifting assembly 2 includes two first lifting parts 201, which are respectively hinged to the first side 101 of the printing platform assembly 1 and symmetrically arranged at both ends of the first side 101 of the printing platform assembly 1. The first driving assembly 4 drives the two first lifting parts 201 to move synchronously along a first direction, meaning that both ends of the first side 101 of the printing platform assembly 1 are always at the same height. Alternatively, the first driving assembly 4 drives the two first lifting parts 201 to move separately along the first direction, meaning that the two ends of the first side 101 of the printing platform assembly 1 can be at different heights, further increasing the tilt angle adjustment range of the printing platform assembly 1.

[0061] As one implementation method, please refer to Figure 5 and Figure 6 The first lifting part 201 includes a first main body 2011 and two first connecting arms 2012. The two first connecting arms 2012 are respectively connected to the first main body 2011, and the two first connecting arms 2012 are spaced apart in a third direction to form a first mounting groove 2013. The printing platform assembly 1 includes a first hinge part 106 hinged in the first mounting groove 2013, thereby effectively improving the connection stability and preventing relative movement between the printing platform assembly 1 and the first lifting part 201.

[0062] As an example, please refer to Figure 5 and Figure 6 Two first clearance grooves 1061 can be provided on the first hinge portion 106. The two first clearance grooves 1061 are provided on both sides of the first hinge portion 106 in the third direction, and the first clearance grooves 1061 are correspondingly provided with the first connecting arms 2012. The first connecting arms 2012 are inserted into the corresponding first clearance grooves 1061. The first rotating shaft 7 passes through the two first connecting arms 2012 and the first hinge portion 106 in the third direction.

[0063] As one implementation method, please refer to Figure 2 , Figure 3 and Figure 6 The first drive assembly 4 includes two first transmission parts 401, which are parallel and spaced apart, and extend along a first direction. Each first transmission part 401 corresponds to a first lifting part 201, with one first transmission part 401 being drively connected to one of the first lifting parts 201, and the other first transmission part 401 being drively connected to the other first lifting part 201. For example, the first transmission part 401 can be a lead screw, and the first lifting part 201 can include a lead screw nut. When the first transmission part 401 rotates around its own axis, the corresponding first lifting part 201 rises or falls along the first direction.

[0064] In some examples, the first drive assembly 4 may include a first drive unit (not shown) connected to two first transmission units 401 respectively. The printing platform assembly 1 can rotate relative to the first lifting unit 201 about a first rotating shaft 7 parallel to the first side 101. When the first drive unit is working, it can drive the two first transmission units 401 to rotate synchronously about a first direction, thereby causing the two first lifting units 201 to move synchronously along the first direction, so that the two ends of the first side 101 of the printing platform assembly 1 are always at the same height.

[0065] In other examples, the first drive assembly 4 may include two first drive units, each corresponding to one of the two first transmission units 401. One first drive unit is connected to one of the first transmission units 401, and the other first drive unit is connected to the other first drive unit. The two first drive units are used to drive the corresponding first transmission units 401 to rotate around a first direction, so that the two first lifting units 201 can move along the first direction respectively. This allows the two ends of the first side 101 of the printing platform assembly 1 to be at the same height or not at the same height, depending on the actual situation, which will not be elaborated here. As an example, the first lifting unit 201 can be connected to the printing platform assembly 1 via a universal joint, which is prior art and will not be elaborated here.

[0066] As an example, the first drive unit can be a motor.

[0067] In some implementation methods, please refer to Figure 2 , Figure 3 and Figure 6The 3D printer may also include a first guide assembly 8. The first guide assembly 8 may include two parallel and spaced-apart first guide portions 801, each extending along a first direction, and the two first guide portions 801 are slidably connected to two first lifting portions 201 in a one-to-one correspondence. The first lifting portion 201 can slide along the corresponding first guide portion 801.

[0068] In some implementation methods, please refer to Figure 1 , Figure 3 and Figure 4 The second lifting assembly 3 includes a second lifting part 301, which is hinged to the middle of the second side 102 of the printing platform assembly 1. As an example, the printing platform assembly 1 may include two first lifting parts 201 and one second lifting part 301, which not only has a simple structure but also can stably support the printing platform assembly 1.

[0069] As one implementation method, please refer to Figure 1 , Figure 3 and Figure 4 The second drive assembly 5 includes a second transmission part 501 and a second drive part (not shown). The second transmission part 501 extends along a first direction and is driveably connected to the second lifting part 301. The second drive part is connected to the second transmission part 501 and is used to drive the second transmission part 501 to rotate around the first direction, thereby allowing the second lifting part 301 to move along the first direction. As an example, the second transmission part 501 can be a lead screw, the second lifting part 301 can include a lead screw nut, and the second drive part can be a motor. When the second drive part drives the second transmission part 501 to rotate around its axis, the second lifting part 301 rises and falls along the first direction.

[0070] As an example, please refer to Figure 1 , Figure 3 and Figure 4 The 3D printer may also include a second guide assembly 10. The second guide assembly 10 may include two parallel and spaced-apart second guide portions 1001, which extend along a first direction and are simultaneously slidably connected to a second lifting portion 301. The second lifting portion 301 may slide along the two second guide portions 1001.

[0071] The second transmission unit 501 is disposed between the two second guide units 1001.

[0072] In some implementation methods, please refer to Figure 6The second lifting assembly 3 includes two second lifting parts 301, which are respectively hinged to the second side 102 of the printing platform assembly 1 and symmetrically arranged at both ends of the second side 102 of the printing platform assembly 1. As an example, the printing platform assembly 1 may include two first lifting parts 201 and two second lifting parts 301, which can more stably support the printing platform assembly 1 and more accurately adjust its tilt angle. The second driving assembly 5 is used to drive the two second lifting parts 301 to move synchronously along a first direction, meaning that both ends of the second side 102 of the printing platform assembly 1 are always at the same height. Alternatively, the second driving assembly 5 is used to drive the two second lifting parts 301 to move separately along the first direction, meaning that the two ends of the second side 102 of the printing platform assembly 1 can be at different heights, further increasing the tilt angle adjustment range of the printing platform assembly 1.

[0073] As one implementation method, please refer to Figure 6 The second drive assembly 5 includes two second transmission parts 501, which are parallel and spaced apart, and extend along a first direction. Each second transmission part 501 corresponds to a second lifting part 301, with one transmission part 501 drivingly connected to one of the second lifting parts 301, and the other transmission part 501 drivingly connected to the other second lifting part 301. For example, the second transmission part 501 can be a lead screw, and the second lifting part 301 can include a lead screw nut. When the second transmission part 501 rotates around its own axis, the corresponding second lifting part 301 rises or falls along the first direction.

[0074] In some examples, the second drive assembly 5 may include a second drive section connected to two second transmission sections 501 respectively, allowing the printing platform assembly 1 to rotate relative to the second lifting section 301 about a second rotating shaft 9 parallel to the second side 102. When the second drive section is in operation, it can drive the two second transmission sections 501 to rotate synchronously about a first direction, thereby causing the two second lifting sections 301 to move synchronously along the first direction, ensuring that both ends of the second side 102 of the printing platform assembly 1 are always at the same height.

[0075] In other examples, the second drive assembly 5 may include two second drive units, each corresponding to one of the two second transmission units 501. One second drive unit is connected to one of the second transmission units 501, and the other second drive unit is connected to the other second drive unit. The two second drive units are used to drive the corresponding second transmission units 501 to rotate around a first direction, so that the two second lifting units 301 can move along the first direction respectively. This allows the two ends of the second side 102 of the printing platform assembly 1 to be at the same height or not at the same height, depending on the actual situation, which will not be elaborated here. As an example, the second lifting unit 301 can be connected to the printing platform assembly 1 via a universal joint, which is prior art and will not be elaborated here.

[0076] As an example, the second drive unit can be a motor.

[0077] As an example, please refer to Figure 6 The 3D printer may also include a second guide assembly 10. The second guide assembly 10 may include two parallel and spaced-apart second guide portions 1001, which extend along a first direction and are slidably connected to two second lifting portions 301 in a one-to-one correspondence. The second lifting portions 301 may slide along the corresponding second guide portion 1001.

[0078] As one implementation method, please refer to Figure 5 and Figure 6 The second lifting part 301 includes a second main body 3011 and two second connecting arms 3012. The two second connecting arms 3012 are respectively connected to the second main body 3011, and the two second connecting arms 3012 are spaced apart in a third direction to form a second mounting groove 3013. The printing platform assembly 1 includes a second hinge part 107 hinged in the second mounting groove 3013, thereby effectively improving the connection stability and preventing relative movement between the printing platform assembly 1 and the second lifting part 301.

[0079] As an example, please refer to Figure 5 and Figure 6 Two second clearance grooves 1071 can be provided on the second hinge portion 107. The two second clearance grooves 1071 are provided on both sides of the second hinge portion 107 in the third direction, and the second clearance grooves 1071 are correspondingly provided with the second connecting arms 3012. The second connecting arms 3012 are inserted into the corresponding second clearance grooves 1071. The second rotating shaft 9 passes through the two first connecting arms 2012 and the second hinge portion 107 in the third direction.

[0080] In some implementation methods, please refer to Figures 1 to 6The printing platform assembly 1 includes a base portion 103, a printing panel portion 104, and a third drive portion 105. A first side 101 of the base portion 103 is hinged to a first lifting assembly 2, and a second side 102 of the base is hinged to a second lifting assembly 3. The printing panel portion 104 is used to receive materials and is rotatably connected to the base portion 103. The third drive portion 105 drives the printing panel portion 104 to rotate about its central axis.

[0081] In this embodiment, the printing platform assembly 1 can be tilted relative to the print head assembly 6, and the distance between the printing platform assembly 1 and the print head assembly 6 is adjustable. In addition, the printing panel portion 104 of the printing platform assembly 1 can rotate around the central axis of the printing panel portion 104, further improving the printing accuracy.

[0082] As an example, the third drive unit 105 can be a motor.

[0083] As one implementation method, please refer to Figure 5 The printing panel 104 includes a medium layer 1041 and a platform plate 1042 arranged sequentially in a first direction. The medium layer 1041 is fixed to the surface of the platform plate 1042 and is used to receive materials. The medium layer 1041 not only ensures good adhesion between the printed model and the printing panel 104, but also allows the object to be easily removed from the printing panel 104 after printing, while protecting the platform plate 1042 from damage. The base 103 includes a heat-conducting plate 1031, a heating element 1032, and a seat 1033 arranged sequentially in a first direction. The heat-conducting plate 1031 is attached to the platform plate 1042 and is used to conduct the heat generated by the heating element 1032 to the printing panel 104. The seat 1033 is hinged to the first lifting assembly 2 and the second lifting assembly 3, that is, the first hinge portion 106 and the second hinge portion 107 are provided on both sides of the seat 1033 in the third direction.

[0084] As an example, the platform plate 1042 can be made of spring steel, the dielectric layer 1041 can be made of polyetherimide (PEI), and the heat-conducting plate 1031 can be made of aluminum. Alternatively, the platform plate 1042, the dielectric layer 1041, and the heat-conducting plate 1031 can also be made of other materials, which can be set according to the actual situation, and will not be elaborated here.

[0085] In some implementation methods, please refer to Figure 4The printing panel 104 has a printing surface 1043 for receiving materials. The normal direction of the printing surface 1043 has an angle α with the extrusion direction of the print head assembly. The angle α can be 0°-60°. Models with a certain tilt angle between the printing platform assembly 1 and the printing platform assembly 1 can be printed directly, realizing supportless printing.

[0086] In some implementation methods, please refer to Figure 1 , Figure 2 and Figure 7 The 3D printer also includes a motion component 11. The motion component 11 can drive the printhead assembly 6 to move along at least one of a second direction and a third direction. The first direction, the second direction, and the third direction are perpendicular to each other, thereby further improving printing accuracy.

[0087] As one implementation method, please refer to Figure 1 and Figure 2 The first drive assembly 4 and the second drive assembly 5 can drive the first lifting assembly 2 and the second lifting assembly 3 to move respectively, adjusting the angle between the printing platform assembly 1 and the print head assembly 6. The third drive unit 105 can drive the printing panel 104 to rotate around the central axis of the printing panel 104, and the motion assembly 11 can drive the print head assembly 6 to move along at least one of the second and third directions, thereby flexibly adjusting the relative position and angle between the print head assembly 6 and the printing platform assembly 1, greatly improving printing accuracy and printing efficiency.

[0088] In some implementation methods, please refer to Figure 1 , Figure 2 ,as well as Figures 7 to 10 The 3D printer also includes a frame assembly 12. The frame assembly 12 includes a first frame portion 1201, a second frame portion 1202, and a third frame portion 1203. The first frame portion 1201 extends along a first direction, the second frame portion 1202 extends along a second direction, and the third frame portion 1203 extends along a third direction. The frame assembly 12 also includes a connecting portion 1204, which connects the first frame portion 1201, the second frame portion 1202, and the third frame portion 1203 into a single unit. Furthermore, the connecting portion 1204 can also be used to mount a motion assembly 11.

[0089] In this embodiment, the connecting part 1204 is both a connector for the outer frame of the 3D printer and an internal functional component for installing the motion assembly 11. It integrates multiple functions, which not only simplifies the structure and reduces costs, but also makes assembly easier.

[0090] As one implementation method, please refer to Figure 9 and Figure 10The connecting part 1204 is an integral structure, comprising an integrally formed body 12041 and a mounting bracket 12042. The body 12041 has an outer side 120411 and an inner side 120412 disposed opposite to each other. The mounting bracket 12042 is formed on the inner side 120412 of the body 12041 and is used to mount the motion component 11. A first frame part 1201 is detachably connected to the outer side 120411 of the body 12041, a second frame part 1202 is detachably connected to the outer side 120411 of the body 12041, and a third frame part 1203 is detachably connected to the outer side 120411 of the body 12041.

[0091] As an example, the first frame portion 1201, the second frame portion 1202 and the third frame portion 1203 can be connected to the body 12041 by fasteners such as screws.

[0092] As an example, the connecting part 1204 can be an injection molded part, or the connecting part 1204 can be a die-cast part, or the connecting part 1204 can be other integrally molded parts, which can be set according to the actual situation, and will not be elaborated here.

[0093] As an example, the first frame portion 1201, the second frame portion 1202, and the third frame portion 1203 can be profiles, or the first frame portion 1201, the second frame portion 1202, and the third frame portion 1203 can also be other structures, which can be set according to the actual situation, and will not be elaborated here.

[0094] As one implementation method, please refer to Figure 1 , Figure 2 and Figure 7 The motion assembly 11 includes a belt 1101, a fourth drive unit (not shown), and an idler pulley 1102. The belt 1101 is connected to the printhead assembly 6. The fourth drive unit is mounted on the connecting part 1204 and can drive the belt 1101 to move, thereby moving the printhead assembly 6 along at least one of a second direction and a third direction. The idler pulley 1102 is mounted on the connecting part 1204 and is used to tension the belt 1101.

[0095] As an example, the fourth drive unit can be a motor.

[0096] It should be noted that the motion component 11 in this embodiment can be the prior art, and the installation of the fourth drive unit and the idler wheel 1102 can be the prior art, which will not be described in detail here.

[0097] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above embodiments merely illustrate preferred implementations of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. Stereolithography printer, characterized in that, The application relates to a printing platform assembly, comprising: a printing platform assembly for receiving material extruded by a printing head assembly, the printing platform assembly having a first side and a second side arranged oppositely; a first lifting assembly hinged to the first side of the printing platform assembly; a second lifting assembly hinged to the second side of the printing platform assembly; a first driving assembly drivingly connected to the first lifting assembly for driving the first lifting assembly to move in a first direction; and a second driving assembly drivingly connected to the second lifting assembly for driving the second lifting assembly to move in the first direction; wherein the first driving assembly and the second driving assembly are capable of driving the first lifting assembly and the second lifting assembly respectively to adjust an included angle between the printing platform assembly and the printing head assembly. The first lifting assembly comprises two first lifting parts hinged to the printing platform assembly and symmetrically arranged at two ends of the first side of the printing platform assembly.

2. The stereoprinter of claim 1 wherein, The first driving assembly is configured to drive the two first lifting parts to move synchronously in the first direction, or the first driving assembly is configured to drive the two first lifting parts to move respectively in the first direction. The first lifting part comprises a first main body and two first connecting arms connected to the first main body, the two first connecting arms are arranged in a third direction perpendicular to the first direction to form a first mounting slot, and the printing platform assembly comprises a first hinge part hinged to the first mounting slot.

3. The stereolithography printer of claim 2, wherein, The first hinge part is provided with a first avoiding slot on both sides in the third direction, and the first connecting arm is inserted into the corresponding first avoiding slot. The first driving assembly comprises two first driving parts extending in the first direction, and the two first driving parts are drivingly connected to the two first lifting parts one by one.

4. The stereoprinter of claim 2 wherein, The first driving assembly further comprises a first driving part connected to the two first driving parts, and the first driving part is configured to drive the two first driving parts to rotate synchronously in the first direction so that the two first lifting parts move synchronously in the first direction; or the first driving assembly further comprises two first driving parts connected to the two first driving parts one by one, and the two first driving parts are configured to drive the corresponding first driving parts to rotate in the first direction so that the two first lifting parts move respectively in the first direction. The second lifting assembly comprises a second lifting part hinged to the middle of the second side of the printing platform assembly.

5. The stereolithography printer of claim 2, wherein, The second driving assembly comprises a second driving part and a second driving part, the second driving part extends in the first direction and is drivingly connected to the second lifting part, and the second driving part is connected to the second driving part, and the second driving part is configured to drive the second driving part to rotate in the first direction so that the second lifting part moves in the first direction.

6. The stereolithography printer of claim 5, wherein, ​ 7. The stereoprinter of claim 2 wherein, The second lifting assembly comprises two second lifting parts, which are respectively hinged to the printing platform assembly and symmetrically arranged at two ends of the second side of the printing platform assembly; The second driving assembly is configured to drive the two second lifting parts to move synchronously in the first direction, or the second driving assembly is configured to drive the two second lifting parts to move respectively in the first direction.

8. The stereoprinter of claim 7 wherein, The second driving assembly comprises two second transmission parts extending in the first direction, and the two second transmission parts are in one-to-one transmission connection with the two second lifting parts. The second driving assembly further comprises a second driving part connected to the two second transmission parts, and the second driving part is configured to drive the two second transmission parts to rotate synchronously in the first direction, so as to drive the two second lifting parts to move synchronously in the first direction; or the second driving assembly further comprises two second driving parts connected to the two second transmission parts in one-to-one correspondence, and the two second driving parts are respectively configured to drive the corresponding second transmission parts to rotate in the first direction, so as to drive the two second lifting parts to move respectively in the first direction.

9. The stereoprinter according to any one of claims 5 to 8, characterized in that The second lifting part comprises a second main body and two second connecting arms respectively connected to the second main body, and the two second connecting arms are arranged in a second mounting groove formed in a third direction perpendicular to the first direction. The second hinge part is provided with a second avoiding groove on both sides in the third direction, and the second connecting arm is inserted into the corresponding second avoiding groove.

10. The stereoprinter of claim 1 wherein, The printing platform assembly comprises: a base part hinged to the first lifting assembly and the second lifting assembly; a printing panel part configured to receive the material, the printing panel part being rotatably connected to the base part; and a third driving part configured to drive the printing panel part to rotate about a central axis of the printing panel part.

11. The stereolithography printer of claim 10, wherein, The printing panel part comprises a platform plate body and a medium layer covering a surface of the platform plate body, and the medium layer is configured to receive the material; The base part comprises a heat-conducting plate body, a heating body and a seat body arranged in sequence in the first direction, wherein the heat-conducting plate body is attached to the platform plate body, and the seat body is hinged to the first lifting assembly and the second lifting assembly.

12. The stereoprinter of claim 1 wherein, The printing platform assembly comprises a printing panel part having a printing surface configured to receive the material, and a normal direction of the printing surface and an extrusion direction of the print head assembly form an included angle, and the included angle is 0°-60°.

13. The stereoprinter of claim 1 wherein, The stereoscopic printer further comprises a motion assembly and a frame assembly; The motion assembly is configured to drive the print head assembly to move in a second direction and / or a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other in pairs. The frame assembly comprises a first frame part extending along the first direction, a second frame part extending along the second direction, a third frame part extending along the third direction, and a connecting part connecting the first frame part, the second frame part and the third frame part; The movement assembly is mounted on the connecting part.

14. The stereoprinter of claim 13, wherein, The connecting part comprises a one-piece body and a mounting bracket; The body has an outer side and an inner side arranged oppositely; The mounting bracket is formed on the inner side of the body and used for mounting the movement assembly; The first frame part, the second frame part and the third frame part are respectively detachably connected to the outer side of the body.

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