阅读说明：本技术 一种柔性可调的lcd3d打印机屏幕隔热系统及lcd3d打印机 (Flexible adjustable LCD3D printer screen heat insulation system and LCD3D printer ) 是由 余水晶 范涛 贺琦 周保根 于 2021-07-29 设计创作，主要内容包括：一种柔性可调的LCD3D打印机屏幕隔热系统,包括液晶屏、屏幕安装板,散热风扇,矩阵光源,散热基板及安装底座,所述液晶屏安装在所述屏幕安装板上,所述矩阵光源安装在所属散热基板上,并固定在所述液晶屏的正下方,所述屏幕安装板安装在所述安装底座的上方,所述散热基板安装在所述安装底座的下方,其中:还包括柔性可调的屏幕隔热系统。通过使用本发明,可以从根源上减少了LCD3D打印机的液晶屏在打印过程中吸收到的热量,然后再配合散热风扇进行散热,可以有效地达到减低屏幕温度,延长屏幕使用寿命的目的。(A flexible and adjustable screen heat insulation system of an LCD3D printer comprises a liquid crystal screen, a screen mounting plate, a heat radiation fan, a matrix light source, a heat radiation substrate and a mounting base, wherein the liquid crystal screen is mounted on the screen mounting plate, the matrix light source is mounted on the heat radiation substrate and fixed under the liquid crystal screen, the screen mounting plate is mounted above the mounting base, and the heat radiation substrate is mounted below the mounting base. By using the invention, the heat absorbed by the liquid crystal screen of the LCD3D printer in the printing process can be radically reduced, and then the heat is radiated by matching with the radiating fan, so that the aims of reducing the screen temperature and prolonging the service life of the screen can be effectively achieved.)

1. The utility model provides a flexible adjustable LCD3D printer screen thermal insulation system which characterized in that includes: the liquid crystal display panel comprises a liquid crystal display, a screen mounting plate, a cooling fan, a matrix light source, a cooling base plate and a mounting base, wherein the liquid crystal display is mounted on the screen mounting plate, the matrix light source is mounted on the cooling base plate and fixed under the liquid crystal display, the screen mounting plate is mounted above the mounting base, and the cooling base plate is mounted below the mounting base.

2. The flexible adjustable screen insulation system for LCD3D printers according to claim 1, wherein the insulation board is installed in parallel between the matrix light source and the liquid crystal screen, and the coverage area of the insulation board is flexible adjustable.

3. The screen heat insulation system of the LCD3D printer with adjustable flexibility as claimed in claim 1, wherein the control device can calculate the area of the heat insulation board to be unfolded according to the range of the non-transparent area on the liquid crystal screen during the printing process of each layer of the LCD3D printer.

4. The screen thermal insulation system for the LCD3D printer with adjustable flexibility as claimed in claim 1, wherein the driving device can receive the command from the control device to drive the thermal insulation board to extend and contract in the horizontal direction so as to cover the area outside the transparent area of the liquid crystal screen.

5. The LCD3D printer screen heat insulation system with adjustable flexibility of claim 1, wherein the heat dissipation fan comprises an upper layer and a lower layer, the upper layer heat dissipation fan is responsible for dissipating heat of a space above the heat insulation plate, and the lower layer heat dissipation fan is responsible for dissipating heat of a space below the heat insulation plate.

6. An LCD3D printer, characterized in that it comprises a flexible adjustable LCD3D printer screen insulation system as claimed in any one of claims 1 to 5.

Technical Field

The invention relates to the technical field of 3D printers, in particular to a screen heat insulation system of a flexible and adjustable LCD3D printer and an LCD3D printer.

Background

The LCD3D printer is a 3D printer using the principle of liquid resin photocuring molding, and uses the LCD imaging technology of a liquid crystal screen, under the drive of a computer and a display screen driving circuit, a three-dimensional model is firstly dispersed into a layer-by-layer plane graph by a computer program, then the display screen driving circuit controls a liquid crystal screen, the designated position of the screen is converted into a transparent area (other areas still keep lightproof black) corresponding to the plane graph, so that an ultraviolet light source below the liquid crystal screen can penetrate through the liquid crystal screen to irradiate the liquid resin above the transparent area, and the resin is cured to become solid. And the lightproof area of the liquid crystal screen shields ultraviolet rays in the non-curing area, so that the resin at other positions still keeps liquid state, and the required product is finally obtained by stacking layer by layer. The light source that LCD used is mostly the very big high frequency ultraviolet light of radiant energy, and the LCD screen can absorb a large amount of heats under its continuous irradiation, leads to the temperature to rise, and the temperature range that the LCD screen allows is basically between 0~50, if be higher than this temperature range, the life-span of LCD screen shortens by a wide margin during meeting, even scrap.

In order to solve the problem of high temperature of the liquid crystal screen and prolong the service life of the liquid crystal screen, the LCD printer is provided with various cooling systems. At present, two types are commonly used, one type is air cooling, and a fan is used for accelerating the air flow around the screen and taking away partial heat of the screen; the other is water cooling, a cooling plate with a liquid flow channel is arranged below the screen, and the heat of the liquid crystal screen is absorbed through a cooling medium. However, the above method has the following problems: the air cooling mode utilizes air flow, but the heat conduction coefficient of the air is very low, so that the heat absorbed by the screen cannot be timely transferred to the air and taken away; the heat conduction is fast by utilizing a water cooling mode, but the complicated flow channel structure and flowing liquid medium processed in the cooling plate inevitably cause the deflection of the projection angle when ultraviolet light passes through the cooling plate, thereby influencing the size precision of curing.

In addition, the two modes are passive heat dissipation, namely, after the screen absorbs a large amount of heat, the heat of the screen is reduced through various ways. Therefore, how to change the passive remediation mode is to move the heat dissipation of the technical gravity center after the liquid crystal screen absorbs heat and increases the temperature to the stage of absorbing heat and increasing the temperature of the liquid crystal screen, and to radically and directly reduce the heat absorbed by the liquid crystal screen, so that the screen maintains a lower temperature, which is an important technical problem to be solved by technical personnel in the field.

Disclosure of Invention

The invention aims to provide a flexible and adjustable LCD3D printer screen heat insulation system and an LCD3D printer, which can reduce high-frequency ultraviolet light irradiated on a liquid crystal screen to the maximum extent in the printing process, reduce the heat absorbed by the liquid crystal screen from the source, and then cooperate with a heat dissipation device to dissipate heat, so as to effectively improve the technical problems of poor heat dissipation effect caused by heat absorption and cooling in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a flexible and adjustable screen heat insulation system of an LCD3D printer comprises a liquid crystal screen, a screen mounting plate, a heat radiation fan, a matrix light source, a heat radiation substrate and a mounting base, wherein the liquid crystal screen is mounted on the screen mounting plate, the matrix light source is mounted on the heat radiation substrate and fixed under the liquid crystal screen, the screen mounting plate is mounted above the mounting base, and the heat radiation substrate is mounted below the mounting base.

Further, the heat insulating board is installed in parallel between the matrix light source and the liquid crystal panel, and the spreading area of the heat insulating board is flexibly adjustable.

Further, the control device can calculate the area of the heat insulation board to be unfolded according to the range of the non-transparent area of the liquid crystal screen in the process of printing each layer of the LCD3D printer.

Further, the driving device can receive an instruction sent by the control device, and drive the thermal insulation board to extend and contract in the horizontal direction so as to cover the area outside the transparent area of the liquid crystal screen.

Further, the heat dissipation fan comprises an upper layer and a lower layer, the upper layer fan is responsible for dissipating heat of the space above the heat insulation plate, and the lower layer fan is responsible for dissipating heat of the space below the heat insulation plate.

The invention aims to provide an LCD3D printer which comprises the flexible and adjustable screen heat insulation system.

Compared with the prior art, the flexible adjustable screen heat insulation system provided by the invention changes the defect that no matter what size of model is printed by the traditional LCD3D printer, the whole liquid crystal screen is completely exposed above the matrix light source and continuously irradiated by high-frequency ultraviolet light in the whole process, so that the temperature of the liquid crystal screen is too high. The shielding area of the heat insulation system is flexibly adjustable, automatic telescopic change can be realized according to different sizes of non-transparent areas of the liquid crystal screen during printing of each layer, only ultraviolet rays in the transparent areas can be irradiated onto the liquid crystal screen, and high-frequency ultraviolet rays in other non-forming areas are blocked by the screen heat insulation system, so that heat energy absorbed by the liquid crystal screen in the printing process is reduced fundamentally, and then the heat energy is matched with a cooling fan to dissipate heat, so that the purposes of reducing the temperature of the screen and prolonging the service life of the screen can be effectively realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an overall front view of an embodiment of the present invention.

FIG. 2 is an overall isometric view of an embodiment of the present invention.

Fig. 3 is an internal structure diagram (hidden housing and liquid crystal panel mounting board) of the embodiment of the invention.

FIG. 4 is a schematic structural diagram of the flexible adjustable thermal insulation system according to the embodiment of the invention.

FIG. 5 is a cross-sectional view A-A in FIG. 1 (when a large-size model is cured, red is the actual size of the liquid crystal panel, the middle irregular filling area is the area of the layer to be cured, and the green area is the shielding range of the thermal insulation plate).

FIG. 6 is a cross-sectional view taken along line A-A in FIG. 1 (when the small-size model is cured, red is the actual size of the liquid crystal panel, the middle irregular filling area is the area of the layer to be cured, and the green area is the shielding range of the heat-insulating plate).

FIG. 7 is a control logic diagram of a flexible adjustable insulation system according to an embodiment of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Referring to fig. 1 to 6, the present embodiment provides a flexible and adjustable LCD3D printer screen heat insulation system, which includes a liquid crystal screen 1, a screen mounting plate 4, a heat dissipation fan 3, a matrix light source 8, a heat dissipation substrate 9 and a mounting base 2, wherein the liquid crystal screen 1 is mounted on the screen mounting plate 4, the matrix light source 8 is mounted on the heat dissipation substrate 9 and fixed under the liquid crystal screen 1, the screen mounting plate 4 is mounted above the mounting base 2, the heat dissipation substrate 9 is mounted under the mounting base 2, and the flexible and adjustable screen heat insulation system 7 is further included, and the screen heat insulation system 7 includes a control device 12, a driving device 11 and a heat insulation board 10.

Further, the heat insulation board 10 is installed in parallel between the matrix light source 8 and the liquid crystal panel 1, and the coverage area of the heat insulation board 10 is flexibly adjustable.

Further, the control device 12 of the screen thermal insulation system 7 can calculate the area to be covered by the thermal insulation board 10 according to the range of the transparent area on the liquid crystal screen during the printing process of each layer of the LCD3D printer.

Further, the driving device 11 of the heat insulation system 7 can receive a pulse command sent by the control device 12, and drive the heat insulation board 10 to extend and contract in the horizontal direction so as to cover the non-transparent area of the liquid crystal panel 1, which does not participate in curing molding.

Further, the heat dissipation fan 3 comprises an upper layer and a lower layer, the upper layer fan 5 is responsible for dissipating heat of the space above the heat insulation board 10, and the lower layer fan 6 is responsible for dissipating heat of the space below the heat insulation board 10.

The invention aims to provide an LCD3D printer, which comprises the screen heat insulation system 7 capable of being flexibly adjusted.

The control logic of the screen thermal isolation system 7 during printing is shown in FIG. 7: when each layer of resin is cured, the control system 12 of the screen heat insulation system 7 firstly reads the image data of the layer provided by the computer program, reversely obtains the size of the non-transparent area of the liquid crystal screen 1, compares the size with the current stretching state of the heat insulation plate 10 to see whether the shielding requirement is met, if the shielding requirement is not met, outputs a pulse instruction to the driving device 11, and after receiving the instruction, the driving device 11 rotates forwards or backwards to drive the heat insulation plate 10 to correspondingly stretch or contract so that the heat insulation plate 10 finishes shielding the non-transparent area of the liquid crystal screen 1.

In the subsequent process of curing the layer of resin, only the transparent area of the liquid crystal screen 1 is exposed to the irradiation of the matrix light source 8, the high-frequency ultraviolet light passes through the transparent area of the liquid crystal screen 1 and irradiates on the liquid resin to complete the curing of the resin, and the high-frequency ultraviolet light and the heat carried by the high-frequency ultraviolet light in other non-transparent areas are blocked below the heat insulation plate 10 and cannot irradiate on the liquid crystal screen 1, so that the heat absorbed by the liquid crystal screen 1 in the curing process is reduced to the greatest extent. Finally, heat above and below the heat insulation plate 10 is respectively transferred to the outside of the machine through the upper-layer cooling fan 5 and the lower-layer cooling fan 6, so that the purposes of reducing the temperature of the liquid crystal screen 1 and prolonging the service life of the liquid crystal screen are achieved.

In this embodiment, the heat-insulating plate 10 is composed of 4 separate heat-insulating plates, and extends and contracts from four directions, front, back, left, and right, below the liquid crystal panel 1 simultaneously, so as to shield the non-transparent area of the liquid crystal panel 1, and other numbers of heat-insulating plates may be used for combination, so as to achieve the same effect.

The present embodiment provides an LCD3D printer including a flexible adjustable LCD3D printer screen thermal shield system. The LCD3D printer has the above advantages over the prior art and will not be described in detail herein.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.