LCD3D printer and LCD3D printing system

Abstract

The present invention provides an LCD 3D printer and an LCD 3D printing system, which relate to the technical field of 3D printers; the LCD 3D printer comprises a housing, a heat dissipation base, a thermally conductive light shield, a printing platform and a light source assembly; the heat dissipation base is fixedly installed in the housing, the thermally conductive light shield is fixedly installed on the heat dissipation base, the light source assembly is located in the thermally conductive light shield and is arranged on the heat dissipation base, and the printing platform is fixedly installed on the top of the thermally conductive light shield; there is an annular space between the thermally conductive light shield and the housing, a first air inlet and a first air outlet connected to the annular space are provided on the housing, and an air suction member is provided at the first air inlet; a second air inlet is provided on one side wall of the thermally conductive light shield, a second air outlet is provided on the other opposite side wall, and an air exhaust member is provided at the second air outlet. The LCD 3D printing system comprises an LCD 3D printer. The technical effect of improving the service life of the LCD screen is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and in particular to an LCD 3D printer and an LCD 3D printing system. Background Art

[0002] LCD3D printer is a 3D printer that uses light-curing resin molding technology. It is a brand-new concept "LCD selective area light transmission principle" 3D printer. Using the LCD imaging principle, driven by the microcomputer and display driver circuit, the computer program provides image signals, and selective transparent areas appear on the LCD screen. Under the irradiation of ultraviolet light, the image transparent area of ​​the LCD screen has reduced UV light blocking, and in the area where no image is displayed, the ultraviolet light is blocked, and the ultraviolet light that passes through the LCD screen constitutes the ultraviolet light image area. A light-curing liquid resin bearing tank is placed on the surface of the LCD screen. The bottom of the tank is a transparent film. The ultraviolet light passes through the transparent film to irradiate the liquid light-curing resin, so that the resin irradiated by the ultraviolet light produces a curing reaction, and the irradiated liquid resin becomes solid. The opaque part of the LCD screen blocks the ultraviolet light, and the blocked part of the liquid light-curing resin is not irradiated by the ultraviolet light. The part of the resin that is not irradiated remains in liquid state. The cured resin is the molding part of the product manufactured by the 3D printer.

[0003] In the LCD 3D printer in the prior art, the light source lamp beads are welded on the aluminum substrate and then fixed on the printing platform through hexagonal copper columns; the aluminum substrate at the bottom of this structure generates a lot of heat, and the heat emitted by the lamp beads is directly transmitted to the acrylic plate through the air, and then transmitted to the LCD screen through the acrylic plate, which directly affects the service life of the LCD screen.

[0004] Therefore, providing an LCD 3D printer and an LCD 3D printing system with a long service life has become an important technical problem to be solved by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide an LCD 3D printer and an LCD 3D printing system to alleviate the technical problem of short service life of LCD screens in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides an LCD 3D printer, including a housing, a heat dissipation base, a thermally conductive light shield, a printing platform, and a light source assembly;

[0007] The heat dissipation base is fixedly installed in the housing, the thermal conductive light shield is fixedly installed on the heat dissipation base, the light source assembly is located in the thermal conductive light shield and is arranged on the heat dissipation base, and the printing platform is fixedly installed on the top of the thermal conductive light shield;

[0008] There is an annular space between the thermal conductive light shield and the shell, a first air inlet and a first air outlet connected to the annular space are provided on the shell, and an air suction member is provided at the first air inlet;

[0009] A second air inlet is provided on one side wall of the thermally conductive light shield, and a second air outlet is provided on the other opposite side wall. An air exhaust member is provided at the second air outlet.

[0010] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the thermal conductive light shield is in the shape of an annular column, and the upper and lower end surfaces of the thermal conductive light shield are arranged in parallel.

[0011] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a plurality of grooves are provided on an inner wall of the thermally conductive light shield.

[0012] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein an air guide member is provided at the second air outlet, the inlet of the air guide member is connected to the second air outlet, and the outlet of the air guide member is connected to the first air outlet.

[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein an LCD mounting plate is installed on the top of the thermally conductive light shield, and an LCD screen is installed on the LCD mounting plate;

[0014] An LCD adapter plate for connecting to the LCD screen is arranged on the printing platform.

[0015] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the light source assembly comprises an aluminum substrate light source, and the aluminum substrate light source is fixedly mounted on the heat dissipation base;

[0016] The aluminum substrate light source is located in the heat-conductive light shield.

[0017] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned light source assembly also includes a focusing mirror, the focusing mirror is arranged on the heat dissipation base, the focusing mirror is located above the aluminum substrate light source, and the focusing mirror is located in the thermal conductive shade.

[0018] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a threaded column for installing a resin tank is provided on the printing platform, and a nut is screwed onto the threaded column;

[0019] Mounting ears are arranged at two opposite ends of the resin tank, and notches are provided on the mounting ears to match the threaded column.

[0020] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned LCD3D printer also includes a Z-axis assembly, the Z-axis assembly is installed on the shell, and a stage for printing work is installed on the Z-axis assembly.

[0021] In a second aspect, an embodiment of the present invention provides an LCD 3D printing system, including the LCD 3D printer.

[0022] Beneficial effects:

[0023] The invention provides an LCD 3D printer, comprising a shell, a heat dissipation base, a thermal conductive light shield, a printing platform and a light source assembly; the heat dissipation base is fixedly installed in the shell, the thermal conductive light shield is fixedly installed on the heat dissipation base, the light source assembly is located in the thermal conductive light shield and is arranged on the heat dissipation base, and the printing platform is fixedly installed on the top of the thermal conductive light shield; an annular space exists between the thermal conductive light shield and the shell, a first air inlet and a first air outlet connected with the annular space are provided on the shell, and an air suction piece is provided at the first air inlet; a second air inlet is provided on one side wall of the thermal conductive light shield, a second air outlet is provided on the other opposite side wall, and an air exhaust piece is provided at the second air outlet.

[0024] When in use, the light source assembly will illuminate for printing. By installing the light source assembly on the heat dissipation base, the heat generated during the operation of the light source assembly can be transferred to the heat dissipation base, and the heat is further transferred to the thermal hood through the heat dissipation base, so that the heat generated by the light source assembly can be transferred to the maximum extent; and the air suction piece located at the first air inlet on the shell will continuously suck the outside air into the annular space, and the exhaust piece located at the second air outlet will also work. The operation of the exhaust piece can make the thermal hood form a negative pressure state. At this time, the air in the annular space will enter the thermal hood from the second air inlet, and then this part of the air can take away the heat on the thermal hood and the heat in the thermal hood, and be discharged from the second air outlet to the vicinity of the first air outlet, and then discharged from the first air outlet. Through such a setting, the heat generated by the light source assembly can be discharged to the outside of the thermal hood of the shell to the maximum extent, thereby reducing the heat received by the LCD screen set on the printing platform, thereby greatly improving the service life of the LCD screen.

[0025] The present invention provides an LCD 3D printing system, including an LCD 3D printer. The LCD 3D printing system has the above advantages compared with the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of an LCD 3D printer provided by an embodiment of the present invention;

[0028] Figure 2 An exploded schematic diagram of an LCD 3D printer provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the structure of a heat-conducting light shield, a heat dissipation base and a light source assembly in an LCD 3D printer provided in an embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of a thermally conductive light shield, a heat dissipation base and an LCD screen in an LCD 3D printer provided in an embodiment of the present invention.

[0031] icon:

[0032] 100 - housing; 110 - first air inlet; 120 - first air outlet; 130 - air suction member; 140 - circuit board;

[0033] 200 - heat sink;

[0034] 300 - thermal conductive light shield; 310 - second air inlet; 320 - second air outlet; 330 - air exhaust member; 340 - air guide member; 350 - groove; 360 - LCD mounting plate; 370 - LCD screen; 380 - quartz glass;

[0035] 400-printing platform; 410-LCD adapter board;

[0036] 500 - light source assembly; 510 - aluminum substrate light source; 520 - focusing lens;

[0037] 600 - annular space;

[0038] 700 - resin tank; 710 - threaded column; 720 - nut; 730 - notch;

[0039] 800 - Z axis assembly;

[0040] 900 - stage. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0046] See also Figure 1 and Figure 2As shown, the present embodiment provides an LCD 3D printer, comprising a housing 100, a heat dissipation base 200, a thermally conductive light shield 300, a printing platform 400 and a light source assembly 500; the heat dissipation base 200 is fixedly installed in the housing 100, the thermally conductive light shield 300 is fixedly installed on the heat dissipation base 200, the light source assembly 500 is located in the thermally conductive light shield 300 and is arranged on the heat dissipation base 200, and the printing platform 400 is fixedly installed on the top of the thermally conductive light shield 300; there is an annular space 600 between the thermally conductive light shield 300 and the housing 100, and a first air inlet 110 and a first air outlet 120 connected to the annular space 600 are opened on the housing 100, and an air suction member 130 is arranged at the first air inlet 110; a second air inlet 310 is opened on one side wall of the thermally conductive light shield 300, and a second air outlet 320 is opened on the other opposite side wall, and an air exhaust member 330 is arranged at the second air outlet 320.

[0047] When in use, the light source assembly 500 will illuminate for printing. By installing the light source assembly 500 on the heat dissipation base 200, the heat generated during the operation of the light source assembly 500 can be transferred to the heat dissipation base 200, and the heat is further transferred to the thermal shading cover 300 through the heat dissipation base 200, so as to transfer the heat generated by the light source assembly 500 to the greatest extent; and, the air suction member 130 located at the first air inlet 110 on the shell 100 will continuously suck the outside air into the annular space 600, and the exhaust member 330 located at the second air exhaust port 320 will also work, and the exhaust member 330 can work to make the thermal shading cover 3 00 forms a negative pressure state, at this time, the air in the annular space 600 will enter the thermal conductive light shielding hood 300 from the second air inlet 310, and then this part of the air can take away the heat on the thermal conductive light shielding hood 300 and the heat inside the thermal conductive light shielding hood 300, and be discharged from the second exhaust port 320 to the vicinity of the first exhaust port 120, and then be discharged from the first exhaust port 120. Through such an arrangement, the heat generated by the light source assembly 500 can be discharged to the outside of the thermal conductive light shielding hood 300 of the shell 100 to the greatest extent, thereby reducing the heat received by the LCD screen 370 set on the printing platform 400, thereby greatly improving the service life of the LCD screen 370.

[0048] Specifically, when the LCD 3D printer provided in this embodiment starts working, the air suction member 130 and the air exhaust member 330 in the housing 100 start working at the same time. The air suction member 130 and the air exhaust member 330 can both be fans; and those skilled in the art can also select the type and model of the air suction member 130 and the air exhaust member 330 according to actual conditions, such as fans, blowers, etc.

[0049] Among them, when the light source assembly 500 starts to work, the light source assembly 500 will generate a large amount of heat, part of which will be transferred to the thermally conductive shade 300 through the heat dissipation base 200; the other part will be dissipated into the thermally conductive shade 300, and the thermally conductive shade 300 will absorb some of the heat, and the remaining heat will accumulate in the thermally conductive shade 300. Through the joint action of the air suction member 130 and the air exhaust member 330, the air can cool down and dissipate the heat of the outer wall of the thermally conductive shade 300, and the air can enter the thermally conductive shade 300 from the second air inlet 310 and be discharged from the second air outlet 320. During this movement, the air will discharge the heat accumulated in the thermally conductive shade 300, so that the LCD screen 370 set on the thermally conductive shade 300 will not be affected by high temperature, thereby improving the service life of the LCD screen 370.

[0050] It should be noted that other control and auxiliary components such as the circuit board 140 can be installed in the annular space 600 between the shell 100 and the thermally conductive shade 300, and these components are arranged between the first air inlet and the second air inlet. When the air suction member 130 sucks the air outside the shell 100 into the annular space 600, the air with a lower temperature will first cool the circuit board 140 and other control and auxiliary components to ensure the normal operation of these components; then it enters the thermally conductive shade 300 from the second air inlet 310, and then is discharged from the thermally conductive shade 300 under the action of the exhaust member. When the air flows through the thermally conductive shade 300, the air with a lower temperature will dissipate the heat of the thermally conductive shade 300, carry the heat of the thermally conductive shade 300 and discharge it out of the thermally conductive shade 300, and the air can also carry the heat in the space of the thermally conductive shade 300 and discharge it out of the thermally conductive shade 300.

[0051] It should be pointed out that in the prior art LCD 3D printer, the light source assembly 500 is directly placed in the housing 100, and the printing platform 400 is supported by copper pillars; when working for a long time, the light source assembly 500 generates a large amount of heat, which not only damages the LCD screen 370, but also deforms the copper pillars used to support the printing platform 400, which has a fatal impact on the printing accuracy. In this embodiment, the printing platform 400 and the LCD screen 370 are supported by the thermal conductive hood 300, and the thermal conductive hood 300 is continuously cooled by air to ensure that the thermal conductive hood 300 will not be deformed, and the thermal conductive hood 300 has a very large heat dissipation area, which is very easy to perform heat dissipation.

[0052] It should also be pointed out that a mounting groove for installing quartz glass 380 or acrylic plate is provided on the top of the thermal conductive shade 300. The quartz glass 380 or acrylic plate is located below the LCD screen 370 to protect the LCD screen 370 and prevent heat from directly contacting the LCD screen 370 during operation, while preventing the LCD screen 370 from being contaminated by air during the heat dissipation process.

[0053] It should also be pointed out that during operation, the heat of the thermal conductive shading cover 300 is dissipated through the 360-degree wind direction of the annular space 600, and a heat dissipation air duct is also provided that runs through the thermal conductive shading cover 300, so that the temperature of the thermal conductive shading cover 300 is extremely low, and the LCD screen 370 arranged on the thermal conductive shading cover 300 can be cooled.

[0054] See also Figure 3 As shown, in an optional solution of this embodiment, the thermal conductive light shield 300 is in the shape of an annular column, and the upper and lower end surfaces of the thermal conductive light shield 300 are arranged in parallel.

[0055] Specifically, the upper and lower end surfaces of the thermally conductive light shield 300 are arranged in parallel, which can simplify the assembly and debugging of the LCD printer and reduce or even eliminate the need to debug the parallelism between the PCD screen and the light source assembly 500 .

[0056] The heat-conducting light shield 300 is made by CNC precision machining after profile extrusion.

[0057] See also Figure 3 As shown, in an optional solution of this embodiment, a plurality of grooves 350 are formed on the inner wall of the thermal conductive light shield 300 .

[0058] Among them, by providing a plurality of grooves 350 on the thermally conductive light shield 300 to increase the heat absorption area of ​​the thermally conductive light shield 300 , the heat in the thermally conductive light shield 300 can be absorbed to the maximum extent, thereby greatly improving the heat dissipation effect.

[0059] See also Figure 1 and Figure 2 As shown, in an optional solution of this embodiment, an air guide 340 is provided at the second air outlet 320 , an inlet of the air guide 340 is connected to the second air outlet 320 , and an outlet of the air guide 340 is connected to the first air outlet 120 .

[0060] Specifically, by disposing the air guide 340 , it is possible to prevent the hot air exhausted from the thermally conductive light shield 300 from staying in the annular space 600 , and instead the hot air is directly exhausted from the first air outlet 120 .

[0061] The first air outlet 120 has a relatively large size, which is larger than the size of the outlet of the air guide 340 , so that the first air outlet 120 can not only discharge the air in the annular space 600 but also be connected to the outlet of the air guide 340 .

[0062] Specifically, the air guide 340 may be a duct or other mechanism, as long as it can guide the hot air to the first air outlet 120 .

[0063] See also Figure 2 and Figure 4 As shown, in an optional solution of this embodiment, an LCD mounting plate 360 ​​is installed on the top of the thermally conductive light shield 300 , and an LCD screen 370 is installed on the LCD mounting plate 360 ​​; an LCD adapter plate 410 for connecting the LCD screen 370 is provided on the printing platform 400 .

[0064] Specifically, an LCD adapter plate 410 is provided on the printing platform 400. When installing the LCD screen 370, it is only necessary to fix the LCD screen 370 on the thermal conductive shade 300, and then connect the cable of the LCD screen 370 to the LCD adapter plate 410 to complete the installation of the LCD screen 370.

[0065] The LCD adapter board 410 is connected to the control circuit board 140 disposed in the annular space 600 , thereby realizing the operation of the LCD screen 370 .

[0066] See also Figure 2 As shown, in an optional solution of this embodiment, the light source assembly 500 includes an aluminum substrate light source 510 , which is fixedly mounted on the heat dissipation base 200 ; the aluminum substrate light source 510 is located in the thermal conductive light shield 300 .

[0067] Specifically, by providing the aluminum substrate light source 510, when the light source is emitting light, the heat generated by the light source can be quickly transferred to the heat dissipation base 200 and the thermal conductive light shield 300 through the aluminum substrate, thereby dissipating the heat of the light source.

[0068] Furthermore, the thermally conductive light shield 300 absorbs the heat radiated from the light source into the thermally conductive light shield 300 .

[0069] See also Figure 2 As shown, in an optional solution of this embodiment, the light source assembly 500 further includes a focusing mirror 520 , which is disposed on the heat dissipation base 200 , located above the aluminum substrate light source 510 , and located within the thermally conductive light shield 300 .

[0070] Specifically, by disposing the focusing mirror 520 , the aluminum substrate can evenly irradiate the light generated by the light source to the LCD screen 370 , thereby ensuring the uniformity of the light.

[0071] The focusing lens 520 is installed above the aluminum substrate light source 510 through a heat-transferring fixing member, and part of the heat generated by the filter light source will be absorbed by the fixing member and transferred to the heat dissipation base 200, thereby further improving the heat dissipation effect.

[0072] See also Figure 1 and Figure 2 As shown, in an optional scheme of this embodiment, a threaded column 710 for installing the resin tank 700 is provided on the printing platform 400, and a nut 720 is screwed on the threaded column 710; mounting ears are provided at opposite ends of the resin tank 700, and a notch 730 is opened on the mounting ears to cooperate with the threaded column 710.

[0073] Specifically, when installing and replacing the resin tank 700, it is only necessary to loosen the nut 720 and then pull out the resin tank 700 in a horizontal direction. There is no need to unscrew the nut 720 on and off the threaded column 710, which is convenient for the staff to operate.

[0074] See also Figure 1 and Figure 2 As shown, in an optional solution of this embodiment, the LCD 3D printer further includes a Z-axis assembly 800 , which is mounted on the housing 100 , and a stage 900 for printing work is mounted on the Z-axis assembly 800 .

[0075] Specifically, by driving the Z-axis assembly 800 , the stage 900 can move closer to or away from the resin tank 700 , thereby completing the printing work.

[0076] This embodiment provides an LCD 3D printing system, including an LCD 3D printer. The LCD 3D printing system has the above advantages compared with the prior art, which will not be described in detail here.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An LCD 3D printer, characterized in that: include: A housing (100), a heat dissipation base (200), a thermally conductive light shield (300), a printing platform (400), and a light source assembly (500); The heat dissipation base (200) is fixedly installed in the housing (100), the thermal conductive light shield (300) is fixedly installed on the heat dissipation base (200), the light source assembly (500) is located in the thermal conductive light shield (300) and is arranged on the heat dissipation base (200), and the printing platform (400) is fixedly installed on the top of the thermal conductive light shield (300); An annular space (600) is present between the heat-conducting light shield (300) and the shell (100); a first air inlet (110) and a first air outlet (120) in communication with the annular space (600) are provided on the shell (100); and an air suction member (130) is provided at the first air inlet (110); A second air inlet (310) is provided on one side wall of the heat-conducting light shield (300), and a second air outlet (320) is provided on the other opposite side wall, wherein an air outlet (330) is provided at the second air outlet (320).

2. The LCD 3D printer according to claim 1, characterized in that: The thermally conductive light shielding cover (300) is in the shape of an annular column, and the upper and lower end surfaces of the thermally conductive light shielding cover (300) are arranged in parallel.

3. The LCD 3D printer according to claim 2, characterized in that: The inner wall of the heat-conducting light shield (300) is provided with a plurality of grooves (350).

4. The LCD 3D printer according to claim 1, characterized in that: An air guide member (340) is provided at the second air outlet (320), an inlet of the air guide member (340) is communicated with the second air outlet (320), and an outlet of the air guide member (340) is communicated with the first air outlet (120).

5. The LCD 3D printer according to claim 1, characterized in that: An LCD mounting plate (360) is mounted on the top of the heat-conducting light shield (300), and an LCD screen (370) is mounted on the LCD mounting plate (360); An LCD adapter plate (410) for connecting to the LCD screen (370) is arranged on the printing platform (400).

6. The LCD 3D printer according to claim 1, characterized in that: The light source assembly (500) comprises an aluminum substrate light source (510), and the aluminum substrate light source (510) is fixedly mounted on the heat dissipation base (200); The aluminum substrate light source (510) is located inside the thermal conductive light shield (300).

7. The LCD 3D printer according to claim 6, characterized in that: The light source assembly (500) further comprises a focusing mirror (520), wherein the focusing mirror (520) is arranged on the heat dissipation base (200), the focusing mirror (520) is located above the aluminum substrate light source (510), and the focusing mirror (520) is located inside the thermally conductive light shield (300).

8. The LCD 3D printer according to any one of claims 1 to 7, characterized in that: The printing platform (400) is provided with a threaded column (710) for installing the resin tank (700), and a nut (720) is screwed onto the threaded column (710); Mounting ears are arranged at two opposite ends of the resin tank (700), and a notch (730) is provided on the mounting ears to match the threaded column (710).

9. The LCD 3D printer according to any one of claims 1 to 7, characterized in that: It also includes a Z-axis component (800), which is installed on the housing (100), and a stage (900) for printing work is installed on the Z-axis component (800).

10. An LCD 3D printing system, characterized in that: A LCD 3D printer comprising any one of claims 1 to 9.

Images