Liquid crystal screen heat dissipation assembly of LCD photocuring 3D printer

Abstract

The utility model relates to a liquid crystal screen heat dissipation assembly of a liquid crystal display (LCD) photocuring 3D printer, which comprises a 3D printer body and an LCD arranged in the 3D printer body, and further comprises bearing glass used for supporting the LCD, the bearing glass is arranged in the 3D printer body, the top end face of the bearing glass is a smooth face, the bottom end face of the bearing glass is a frosted layer, and the top end face of the bearing glass is provided with a heat dissipation layer. A transparent oil coating is arranged on the bottom end surface of the frosted layer; and the cooling device is installed in the 3D printer body, and the output end of the cooling device faces the transparent oil coating. The cooling device is combined with the frosted layer, the surface area of the frosted layer is hundreds of times of that of a smooth surface, and under the action of the cooling device, the area of the frosted layer receiving the action of the cooling device is hundreds of times of that of the smooth surface relative to the smooth surface, that is, the heat dissipation effect of the combination of the frosted layer and the cooling device is hundreds of times of that of the smooth surface; therefore, the LED lamp has a good heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a liquid crystal screen heat dissipation component of an LCD light-curing 3D printer. Background Art

[0002] In the field of 3D (Three Dimensional) printing technology, rapid prototyping technology can be divided into many categories according to the materials used and the forming methods, among which the most common is photo-curing rapid prototyping. The principle of photo-curing is to use the characteristics of photosensitive resin in a fluid state to undergo polymerization under light, and irradiate the light source according to the cross-sectional shape of the object to be formed, so as to solidify the resin in a fluid state.

[0003] The upper limit of the operating temperature of the LCD screen of the LCD screen heat dissipation component of the existing LCD light-curing 3D printer is 65°C. However, for 3D printers with higher printing efficiency requirements, the temperature of each layer of resin is higher than 75°C, and the high-energy irradiation of the UV light source (ultraviolet curing light source) will cause the heat accumulation of the LCD screen to exceed 65°C. Long-term use will reduce the life of the LCD screen or even damage it, affecting the normal use of the 3D printer. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a liquid crystal screen heat dissipation component for an LCD light-curing 3D printer, which solves the technical problem in the prior art that poor heat dissipation effect leads to heat accumulation on the LCD liquid crystal screen, thereby reducing its service life or even damaging it.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] A liquid crystal screen heat dissipation component of an LCD light-curing 3D printer, comprising a 3D printer body and an LCD liquid crystal screen installed in the 3D printer body, and further comprising:

[0009] A bearing glass for supporting the LCD screen, the bearing glass being installed in the 3D printer body, the top end surface of the bearing glass being a smooth surface, and the bottom end surface being a frosted layer;

[0010] The bottom end surface of the frosted layer is provided with a transparent oil coating;

[0011] A cooling device is installed in the 3D printer body, and an output end of the cooling device faces the transparent oil coating.

[0012] Preferably, the frosted layer has a plurality of grooves recessed toward the supporting glass, and the depth of the grooves is 0.05 mm to 0.3 mm.

[0013] Preferably, the thickness of the load-bearing glass is 5 mm to 30 mm.

[0014] Preferably, it also includes a connection layer for connecting the LCD screen and the bearing glass, and the connection layer is a transparent layer.

[0015] Preferably, the connecting layer is a transparent adhesive layer, and the thermal conductivity of the transparent adhesive layer is greater than 0.5 W / (m° C.).

[0016] Preferably, the cooling device is a heat dissipation fan.

[0017] Preferably, it also includes a UV light source for illuminating the molding surface of the printed part, wherein the UV light source is installed in the 3D printer body and is placed below the transparent oil coating.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] The utility model combines a cooling device with a frosted layer, and the surface area of ​​the frosted layer is several hundred times that of the smooth surface. Under the action of the cooling device, relative to the smooth surface, the area of ​​the frosted layer receiving the action of the cooling device is several hundred times that of the smooth surface. In other words, the heat dissipation effect of the combination of the frosted layer and the cooling device is one hundred times that of the smooth surface. Therefore, the utility model has a good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the LCD screen heat dissipation assembly of the LCD light-curing 3D printer of the utility model;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0023] [Description of Reference Numerals]

[0024] 1: Forming platform; 2: Resin pool; 3: LCD screen; 4: Carrying glass; 41: Frosted layer; 42: Transparent oil coating; 5: UV light source; 6: Cooling device; 7: 3D printer body; 8: Connection layer; 9: Printed part. DETAILED DESCRIPTION

[0025] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0026] Example

[0027] like Figures 1-2 As shown, a liquid crystal screen heat dissipation component of an LCD light-curing 3D printer includes a 3D printer body 7, an LCD liquid crystal screen 3 installed in the 3D printer body 7, a bearing glass 4 and a cooling device 6. The bearing glass 4 is used to support the LCD liquid crystal screen 3, and the bearing glass 4 is connected to the 3D printer body 7. The top end surface of the bearing glass 4 is a smooth surface, and the bottom end surface is a frosted layer 41. The bottom end surface of the frosted layer 41 is provided with a transparent oil coating 42. The output end of the cooling device 6 faces the transparent oil coating 42, and the cooling device 6 is fixed to the 3D printer body 7.

[0028] In the prior art, the glass used to support the LCD screen 3 is a smooth flat glass, while the glass in the present invention is a supporting glass 4 with a frosted layer 41 sprayed on the bottom end surface. The surface area of ​​the frosted layer 41 of the supporting glass 4 is several hundred times that of the smooth surface. Under the action of the same cooling device 6, the cooling effect received by the surface of the frosted layer 41 is several hundred times that of the smooth surface, that is, the heat dissipation effect of the frosted layer 41 is several hundred times that of the smooth surface. Therefore, the present invention can improve the heat dissipation effect by spraying the frosted layer 41 on the bottom end surface of the supporting glass 4, thereby preventing the LCD screen 3 from being overheated due to energy accumulation, thereby affecting the normal use of the 3D printer.

[0029] In this embodiment, the frosted layer 41 coated on the bottom end surface of the bearing glass 4 is sprayed with sand of 290-310 meshes, and a transparent oil layer 42 is coated after the frosted layer 41 is sprayed to increase the transparency of the frosted layer 41. Although the light transmittance of the bearing glass 4 is reduced after sandblasting, the light transmittance after coating the transparent oil layer 42 is relatively increased, which can allow the light of the UV light source 5 to pass through and can meet the requirements of the molding surface of the printed part 9 for the curing light.

[0030] like Figure 1 As shown, further, the frosted layer 41 has a plurality of grooves concave toward the supporting glass 4, and the depth of the grooves is 0.05 mm to 0.3 mm. Since the frosted layer 41 is formed by high-speed spraying of 290-310 mesh sand onto the supporting glass 4, the frosted layer 41 is uneven due to the action of the sand, and the grooves are also caused by the action of the granular sand. The transparent oil layer 42 is only a very thin layer, which will not fill the grooves caused by the granular sand. The frosted layer 41 is still an uneven surface, so its surface area is much larger than the surface area of ​​the smooth surface. Combined with the cooling device 6, it has a good heat dissipation effect.

[0031] like Figure 1 As shown, the thickness of the supporting glass 4 is 5 mm to 30 mm. During the sandblasting process of the frosted layer 41, the supporting glass 4 is fragile and needs to have a certain thickness to prevent it from breaking.

[0032] like Figure 1 As shown, the LCD screen heat dissipation assembly of the LCD light-curing 3D printer also includes a connecting layer 8 for connecting the LCD screen 3 and the supporting glass 4, and the connecting layer 8 is a transparent layer. The connecting layer 8 is a transparent adhesive layer, and the thermal conductivity of the transparent adhesive layer is greater than 0.5W / (m°C). In this embodiment, the connecting layer 8 used is completely transparent AB organic silicone.

[0033] like Figure 1 As shown, the cooling device 6 is a heat dissipation fan, and may also be other devices capable of providing cooling air, as long as it can cool the supporting glass 4 .

[0034] like Figure 1 As shown, the LCD screen heat dissipation assembly of the LCD light-curing 3D printer also includes a molding platform 1, a resin pool 2, and a UV light source 5 for irradiating the molding surface of the printed part 9. The molding platform 1 and the resin pool 2 are both installed in the 3D printer body 7, the resin pool 2 is placed on the top of the LCD screen 3, the molding platform 1 is placed above the resin pool 2, and the UV light source 5 is placed below the transparent oil coating and fixed on the 3D printer body 7. The light of the UV light source 5 is imaged through the mask of the LCD screen 3 to irradiate and cure the printed material, and the printed part 9 is gradually formed at the bottom of the molding platform 1.

[0035] Specifically, the carrier glass 4 and the frosted layer 41 form frosted glass, and the transparency of the frosted glass coated with the transparent oil coating 42 is reduced by about 20% compared with the transparency of the smooth flat glass. Although the transparency of the frosted glass is reduced, the energy of the UV light source 5 is accumulated on the frosted glass, but the energy accumulation of the UV light source 5 is far less than the increase in the heat dissipation effect of the frosted glass. Therefore, the overall heat dissipation still has a good effect compared with the prior art.

[0036] When in use, the light from the UV light source 5 is transmitted through the mask of the LCD screen 3 to image and irradiate the printed material for curing. At the same time, the cooling fan blows air toward the bottom end surface of the supporting glass 4 to cool it and extend the service life of the LCD light-curing 3D printer.

[0037] In the description of the present utility model, it should be understood that 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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.

[0039] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0041] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A liquid crystal screen heat dissipation assembly of an LCD light-curing 3D printer, comprising a 3D printer body (7) and an LCD liquid crystal screen (3) installed in the 3D printer body (7), characterized in that: Also includes: A supporting glass (4) for supporting the LCD screen (3), wherein the supporting glass (4) is installed in the 3D printer body (7), the top end surface of the supporting glass (4) is a smooth surface, and the bottom end surface is a frosted layer (41), The bottom end surface of the frosted layer (41) is provided with a transparent oil coating (42); A cooling device (6), wherein the cooling device (6) is installed in the 3D printer body (7), and the output end of the cooling device (6) faces the transparent oil coating (42).

2. The LCD screen heat dissipation assembly of the LCD light-curing 3D printer according to claim 1, characterized in that: The frosted layer (41) has a plurality of grooves which are recessed toward the supporting glass (4), and the depth of the grooves is 0.05 mm to 0.3 mm.

3. The LCD screen heat dissipation assembly of the LCD light-curing 3D printer according to claim 1, characterized in that: The thickness of the supporting glass (4) is 5 mm to 30 mm.

4. The LCD screen heat dissipation assembly of the LCD light-curing 3D printer according to claim 1, characterized in that: It also comprises a connection layer (8) for connecting the LCD screen (3) and the supporting glass (4), wherein the connection layer (8) is a transparent layer.

5. The LCD screen heat dissipation assembly of the LCD light-curing 3D printer according to claim 4, characterized in that: The connecting layer (8) is a transparent adhesive layer, and the thermal conductivity of the transparent adhesive layer is greater than 0.5 W / (m° C.).

6. The LCD screen heat dissipation assembly of the LCD light-curing 3D printer according to claim 1, characterized in that: The cooling device (6) is a heat dissipation fan.

7. The LCD screen heat dissipation assembly of the LCD light-curing 3D printer according to claim 1, characterized in that: It also includes a UV light source (5) for illuminating the molding surface of the printed part (9), wherein the UV light source (5) is installed in the 3D printer body (7), and the UV light source (5) is placed below the transparent oil coating (42).

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