WO2022110477A1

WO2022110477A1 - Light source device for photo-curing 3d printing

Info

Publication number: WO2022110477A1
Application number: PCT/CN2020/140534
Authority: WO
Inventors: 刘辉林; 唐京科; 陈春; 敖丹军; 张晓明; 程敏强
Original assignee: 深圳市创想三维科技有限公司
Priority date: 2020-11-30
Filing date: 2020-12-29
Publication date: 2022-06-02
Also published as: CN214122625U

Abstract

Provided in the present utility model is a light source device for photo-curing 3D printing, the device comprising a light source module, a screen assembly, an adjusting assembly and a reflector, wherein the light source module is used for providing illumination; the illumination provided by the light source module can be projected onto the screen assembly; the adjusting assembly is arranged at an emergent end of the light source module, and an angle of the adjusting assembly relative to the light source module can be adjusted; and the reflector is connected to the adjusting assembly and can reflect the illumination provided by the light source module into the screen assembly. In the light source device for photo-curing 3D printing, the reflector is arranged on the adjusting assembly, the adjusting assembly is arranged at the emergent end of the light source module, the reflector can reflect the illumination provided by the light source module into the screen assembly, and the angle of the adjusting assembly relative to the light source module can be adjusted, such that the assembly error of the light source module can be eliminated, and the reflector can reflect the illumination provided by the light source module into the screen assembly in a concentrated manner.

Description

Light source device for photocuring 3D printing

technical field

The utility model relates to the technical field of LCD photocuring, in particular to a light source device for photocuring 3D printing.

Background technique

With the emergence of black and white LCD screens, the increase in light transmittance makes the service life of LCD screens continue to extend. In the field of photocuring, LCD photocuring technology has obvious advantages in resolution, printing accuracy, molding area and price. However, As the LCD molding area increases, higher requirements are placed on the power, uniformity and collimation of the UV light source. At present, most manufacturers use distributed area exposure splicing technology, which is mainly composed of many UV lamp beads evenly arranged in a row. The disadvantage is that the light path does not fall into the forming area.

Utility model content

Based on this, it is necessary to provide a light source device for photocuring 3D printing in order to solve the technical problem that the light path is not concentrated in the molding area.

A light-curing 3D printing light source device, the light-curing 3D printing light source device comprising:

a light source module, the light source module is used to provide illumination;

a screen assembly, the light provided by the light source module can be projected onto the screen assembly;

an adjustment assembly, the adjustment assembly is disposed at the outgoing end of the light source module, and the angle of the adjustment assembly relative to the light source module can be adjusted;

a reflector, the reflector is connected to the adjustment assembly, and the reflector can reflect the light provided by the light source module into the screen assembly.

In one embodiment, the light-curing 3D printed light source device further includes a first plate body and a second plate body, the first plate body is connected to the second plate body, and one end of the adjustment component slides is connected to the first plate body, and the other end is slidably connected to the second plate body.

In one of the embodiments, the first plate body and the second plate body are provided with adjustment grooves, the adjustment assembly includes a first adjustment member and a second adjustment member, and the first adjustment member can pass through the The adjustment slot is connected to the first plate body, the second adjustment piece can be connected to the second plate body through the adjustment slot, and the first adjustment piece and the second adjustment piece can move in the adjustment slot.

In one of the embodiments, the adjusting member includes a mirror bracket, and the mirror bracket includes a flexible connecting member, a support base and a mounting bracket;

The reflector is mounted on the mounting frame, one end of the first adjusting member is connected to the mounting frame, and the other end passes through the adjusting groove to connect the mounting frame to the first plate body;

The support base is connected to the mounting frame through the flexible connecting piece, the support base can be rotated relative to the mounting frame, one end of the second adjusting member is connected to the support base, and the other end passes through the adjusting member A groove connects the support base to the second plate body. When the second adjustment member drives the support base to move along the extending direction of the adjustment groove, the support base can keep fit on the second plate body. The second plate body.

In one of the embodiments, a flange protrudes from a side of the mounting bracket opposite to the support base, one end of the first adjusting member is connected to the flange, and the other end passes through the adjusting groove, so that the The flange is connected to the first plate body.

In one embodiment, the light-curing 3D printed light source device further includes a third board body and a fourth board body, the third board body is connected to the second board body, and one end of the fourth board body is connected to the third board body, the other end is connected to the first board body, the light source module is connected to the third board body; the fourth board body is provided with an opening, and the screen assembly faces the The opening is installed on the fourth plate body.

In one embodiment, the light source device for light curing 3D printing further includes a fifth board body and a sixth board body, one end of the fifth board body is connected to the first board body, and the other end is connected to the The third plate body, one end of the sixth plate body is connected to the first plate body, the other end is connected to the third plate body, the first plate body, the second plate body, the third plate body The plate body, the fourth plate body, the fifth plate body and the sixth plate body are formed into a box body, and the screen assembly cooperates with the box body to form a fully enclosed structure.

In one embodiment, the light source module includes a substrate and lamp beads, the lamp beads are connected to the substrate, the side of the substrate with the lamp beads is disposed toward the adjustment component, and the lamp beads are used for Provide light.

In one embodiment, the light source module further includes a light shielding plate and a light plate, the light plate is connected to the substrate, the lamp beads are mounted on the light plate, and the light shielding plate is provided with light-transmitting holes , the shading plate is connected to the lamp board, and the light-transmitting hole is used to avoid the light projected by the lamp bead.

In one embodiment, the light source module further includes a light blocking eaves, the light blocking eaves are connected to the substrate, the light blocking eaves are arranged between the light panel and the screen assembly, and the light blocking eaves Used to block the excess light projected by the lamp beads.

In one embodiment, the screen assembly includes an LCD screen, a condensing lens and a glass backing plate, the LCD screen is connected to the condensing lens, the LCD screen is arranged on a side away from the adjustment assembly, the The condensing lens is used to adjust the light provided by the light source module. The glass backing plate is arranged between the LCD screen and the condensing lens. One side of the glass backing plate is connected to the LCD screen, and the other side is connected to the LCD screen. For the condensing lens, the glass backing plate is used for fixing the LCD screen and the condensing lens.

The light-curing 3D printing light source device provided by the utility model comprises a light source module, a screen assembly, an adjustment assembly and a reflector; the light source module is used for providing illumination; the illumination provided by the light source module can be projected to the screen assembly; the adjustment assembly is arranged on the light source module The angle of the adjusting component relative to the light source module can be adjusted at the exit end of the light source module; the reflector is connected to the adjusting component, and the reflector can reflect the light provided by the light source module into the screen component. In the light-curing 3D printing light source device provided by the present invention, the reflector is installed on the adjustment component, and the adjustment component is arranged at the exit end of the light source module. The reflector can reflect the light provided by the light source module into the screen component. Since the adjustment component is relatively opposite to the light source module The angle of the light source module can be adjusted, so that the assembly error of the light source module can be eliminated, so that the reflector can reflect the light provided by the light source module into the screen assembly.

Description of drawings

1 is a schematic diagram of a light source device for photocuring 3D printing provided by an embodiment of the present invention;

2 is a schematic diagram of a partial explosion of a light source device for photocuring 3D printing provided by an embodiment of the present invention;

3 is a schematic diagram of the assembly principle of a light source device for photocuring 3D printing provided by an embodiment of the present invention;

4 is a first schematic diagram of an adjustment component and a reflector in a light-curing 3D printing light source device provided by an embodiment of the present invention;

5 is a second schematic diagram of an adjustment component and a reflector in a light-curing 3D printing light source device provided by an embodiment of the present invention;

Fig. 6 is the partial enlarged view of A place in Fig. 5;

7 is a schematic diagram of the installation of a lamp board and a shading plate in a light-curing 3D printing light source device provided by an embodiment of the present invention;

8 is a schematic diagram of a light source module in a light source device for photocuring 3D printing provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of a box in a light source device for photocuring 3D printing according to an embodiment of the present invention.

Icon: 100-adjustment assembly; 110-reflector; 120-reflector bracket; 121-mounting frame; 122-support seat; 123-flanging; 124-locking piece; 125-locking hole; 126-flexible connecting piece ; 127-fixing hole; 130-first adjusting part; 200-light source module; 210-substrate; 220-lamp bead; 230-lamp board; 231-bump; Light blocking eaves; 260-heat dissipation part; 261-fan; 262-radiator; 270-installation plate; 300-screen assembly; 310-LCD screen; 311-circuit board; 320-condensing lens; 330-glass backing plate; 340 -Tempered glass; 350-AB double-sided silica gel; 400-box; 410-fourth plate; 411-opening; 412-avoidance groove; 420-first plate; 430-third plate; 440-second Board body; 450-inclined board; 460-plywood; 461-wire hole; 470-first connecting plate; 480-adjustment slot; 490-fixing buckle.

Detailed ways:

In order to make the above objects, features and advantages of the present utility model more clearly understood, the specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not subject to the specific embodiments disclosed below. limit.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" ", "radial", "circumferential" and other indicated orientations or positional relationships 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 the indicated A device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connected, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features through an intermediary indirect contact. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or an intervening element may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Referring to FIGS. 1, 2 and 3, FIG. 1 is a schematic diagram of a light-curing 3D printing light source device provided by an embodiment of the present invention; FIG. 2 is a partial explosion of the light-curing 3D printing light source device provided by an embodiment of the present invention Schematic diagram; FIG. 3 is a schematic diagram of the assembly principle of the light-curing 3D printing light source device provided by the embodiment of the present invention. The light source device for light curing 3D printing provided by an embodiment of the present invention includes a light source module 200, a screen assembly 300, an adjustment assembly 100 and a reflector 110; the light source module 200 is used for providing illumination; the illumination provided by the light source module 200 can be projected to the screen assembly 300; the adjustment assembly 100 is disposed at the exit end of the light source module 200, and the angle of the adjustment assembly 100 relative to the light source module 200 can be adjusted; the reflector 110 is connected to the adjustment assembly 100, and the reflector 110 can reflect the light provided by the light source module 200 into the screen assembly 300. In the light-curing 3D printing light source device provided by the present invention, the reflector 110 is installed on the adjustment assembly 100 , and the adjustment assembly 100 is disposed at the exit end of the light source module 200 . The reflector 110 can reflect the light provided by the light source module 200 into the screen assembly 300 . Since the angle of the adjustment assembly 100 relative to the light source module 200 can be adjusted, the assembly error of the light source module 200 can be eliminated, so that the reflector 110 can concentrate the light provided by the light source module 200 into the screen assembly 300 .

Further, the reflector 110 is a front-coated reflector 110 with high reflectance, accurate and no deviation, and can reflect the light provided by the light source module 200 into the screen assembly 300 accurately and without deviation, and the light intensity will not be weakened.

It should be noted that the coating layer of the reflector 110 can be a silver thin film, but not limited to this, and can also be an aluminum thin film, as long as it can reflect the light provided by the light source module 200 into the screen assembly 300 .

Referring to FIGS. 2 , 4 and 5 , FIG. 4 is a first schematic diagram of an adjustment component and a reflector in a light-curing 3D printing light source device provided by an embodiment of the present invention; The second schematic diagram of the adjustment assembly and the reflector in the 3D printed light source device. In one embodiment, the light source device for photocuring 3D printing further includes a first plate body 420 and a second plate body 440 , the first plate body 420 is connected to the second plate body 440 , and one end of the adjustment assembly 100 is slidably connected to the first plate body 440 . The other end of the plate body 420 is slidably connected to the second plate body 440 .

The uncoated side of the mirror 110 is connected to the adjustment assembly 100 , one end of the adjustment assembly 100 is slidably connected to the first plate body 420 , and the other end is slidably connected to the second plate body 440 . The position of the reflector 110 relative to the light source module 200 can be adjusted. By adjusting the position of the adjustment assembly 100 relative to the light source module 200, the position of the reflector 110 relative to the light source module 200 is adjusted, thereby reflecting the light provided by the light source module 200 into the screen assembly 300.

In addition, the two side edges of the first plate body 420 are provided with second connecting plates, the second connecting plates are perpendicular to the first plate body 420, and the first plate body 420 is connected to the second plate body 440 through the second connecting plate on one side. .

Continue to refer to FIG. 2 , FIG. 4 and FIG. 5 , in one embodiment, the first plate body 420 and the second plate body 440 are provided with adjustment grooves 480 , and the adjustment assembly 100 includes the first adjustment member 130 and the second adjustment member. An adjustment member 130 can be connected to the first plate body 420 through the adjustment groove 480, the second adjustment member can be connected to the second plate body 440 through the adjustment groove 480, and the first adjustment member 130 and the second adjustment member can be connected to the adjustment groove Move within 480.

Specifically, the adjusting groove 480 on the first plate body 420 extends along the first direction, the adjusting groove 480 on the second plate body 440 extends along the second direction, and the first adjusting member 130 and the second adjusting member can be positioned in the adjusting groove 480 move in the direction of its extension.

It should be noted that the first direction is a vertical direction, and the second direction is a horizontal direction. For convenience of description, the first direction and the second direction are both described below.

Referring to FIG. 2 , FIG. 4 , FIG. 5 and FIG. 6 , FIG. 6 is a partial enlarged view of A in FIG. 5 . In one embodiment, the adjustment assembly 100 includes a mirror bracket 120, and the mirror bracket 120 includes a flexible connecting member 126, a support base 122 and a mounting bracket 121; the reflection mirror 110 is mounted on the mounting bracket 121, and one end of the first adjustment member 130 is connected to The other end of the mounting bracket 121 passes through the adjustment groove 480 to connect the mounting bracket 121 to the first plate body 420; , one end of the second adjusting member is connected to the support base 122, and the other end passes through the adjusting groove 480 to connect the support base 122 to the second plate body 440. When the second adjusting member drives the support base 122 to move along the extending direction of the adjusting groove 480 , the support base 122 can remain attached to the second plate body 440 .

Specifically, the support base 122 and the mounting frame 121 are connected by the flexible connecting member 126, so that the angle of the support base 122 relative to the mounting frame 121 can be changed. During fixing, the support base 122 can be attached to the second plate body 440 , so that the support base 122 and the second plate body 440 are more tightly fixed.

Wherein, since the first plate body 420 and the second plate body 440 are provided with the adjusting groove 480, the first adjusting member 130 and the second adjusting member can move in the extending direction of the adjusting groove 480. When the second adjusting member moves along the second plate When the extending direction of the adjusting slot 480 in the body 440 drives the mirror bracket 120 to move, the angle of the supporting seat 122 is rotated, so that the supporting seat 122 can be kept in contact with the second plate body 440 , so that the second adjusting member can keep the supporting seat 122 in contact with the second plate body 440 122 and the second plate body 440 are fixed, so that the angle of the reflector 110 relative to the light source module 200 is changed, the optimal angle is adjusted, and the assembly error of the light source module 200 is eliminated and eliminated, so that the adjustment assembly 100 can adjust the light provided by the light source module 200. At the same time, the frame of the mounting frame 121 can shield the refraction of excess light and reduce the influence of excess light on printing.

Further, the support base 122 is provided with a fixing hole 127 having a threaded structure, and the second adjusting member passes through the adjusting groove 480 and the fixing hole 127 in sequence, and is threadedly connected with the fixing hole 127, thereby connecting the support base 122 to the second plate body 440 , so that the second adjusting member drives the support base 122 to move along the extending direction of the adjusting slot 480 .

In addition, the mirror bracket 120 further includes a locking member 124 , the uncoated side of the mirror 110 is connected to the mounting frame 121 , and the locking member 124 is used for locking the reflecting mirror 110 and the mounting frame 121 .

Preferably, the locking member 124 is a bolt, the mounting bracket 121 is provided with a locking hole 125 , and the locking hole 125 has a threaded structure and can be threadedly connected with the locking member 124 . The bolts are screwed into the locking holes 125 along the side of the mounting bracket 121 toward the reflector 110 , wherein the nut on the bolt abuts the edge of the reflector 110 , thereby locking the reflector 110 and the mount 121 .

Further, a rubber gasket is set on the bolt. When the bolt locks the reflector 110 and the reflector bracket 120, one side of the rubber gasket is in contact with the nut, and the other side is in contact with the reflector 110. The rubber gasket While fixing the reflector 110 , friction can be increased to prevent the reflector 110 from deviating relative to the mounting frame 121 , so that the light provided by the light source module 200 cannot be concentratedly reflected into the screen assembly 300 .

Referring to FIGS. 2 , 4 and 5 , in one embodiment, the side of the mounting bracket 121 opposite to the support base 122 protrudes from the flange 123 , one end of the first adjusting member 130 is connected to the flange 123 , and the other end passes through the adjustment The groove 480 connects the flange 123 to the first plate body 420 .

Specifically, the flange 123 is provided with a fixing hole 127 having a threaded structure, and the first adjusting member 130 passes through the adjustment groove 480 and the fixing hole 127 in sequence, and is threadedly connected with the fixing hole 127, thereby connecting the flange 123 to the first plate body 420 , so that the first adjusting member 130 drives the support base 122 to move along the extending direction of the adjusting slot 480 .

Referring to FIG. 1 , FIG. 2 and FIG. 9 , FIG. 9 is a schematic diagram of a box body in a light-curing 3D printing light source device provided by an embodiment of the present invention. In one embodiment, the light source device for photocuring 3D printing further includes a third board body 430 and a fourth board body 410 , the third board body 430 is connected to the second board body 440 , and one end of the fourth board body 410 is connected to the third board body 410 . The other end of the board body 430 is connected to the first board body 420 , and the light source module 200 is connected to the third board body 430 ;

Specifically, the other side of the second connecting plate on the first plate body 420 is connected to the fourth plate body 410 , the third plate body 430 is disposed opposite to the first plate body 420 , and the edges on both sides of the third plate body 430 are provided with a third plate body 430 . A connecting plate 470, the first connecting plate 470 is perpendicular to the third plate body 430, the third plate body 430 is connected to the second plate body 440 through the first connecting plate 470 on one side, and the first connecting plate 470 on the other side is connected on the fourth plate body 410 .

Further, the third board body 430 is provided with a light-passing hole, the light provided by the light source module 200 can pass through the light-passing hole, and the light-passing hole includes a clamping plate 460 and an inclined plate 450, and one side of the inclined plate 450 is connected to the third plate body 430, the other side is connected to the light source module 200, one side of the clamping plate 460 is connected to the inclined plate 450, and the other side is connected to the third plate body 430, wherein the number of the clamping plate 460 is two, the clamping plate 460 and the inclined plate 450 It is surrounded by a light-passing hole, so that the light provided by the light source module 200 can be projected into the adjusting assembly 100 through the light-passing hole.

In addition, the edge of the opening 411 is provided with a boss, the boss is used to carry the screen assembly 300 , and the fourth plate body 410 is further provided with an escape groove 412 , and the escape groove 412 is spaced apart from the opening 411 . When the screen assembly 300 is installed at the opening 411 , the circuit board 311 of the screen assembly 300 can pass through the escape groove 412 and extend into the box body 400 .

Continue to refer to FIG. 1 , FIG. 2 and FIG. 9 , in one embodiment, the light-curing 3D printing light source device further includes a fifth board body and a sixth board body, one end of the fifth board body is connected to the first board body 420 , and the other One end is connected to the third plate body 430, one end of the sixth plate body is connected to the first plate body 420, the other end is connected to the third plate body 430, the first plate body 420, the second plate body 440, the third plate body 430, The fourth plate body 410 , the fifth plate body and the sixth plate body are enclosed to form a box body 400 , and the screen assembly 300 cooperates with the box body 400 to form a fully enclosed structure.

Further, the fifth plate body and the sixth plate body are disposed opposite to each other, and the first plate body 420 , the second plate body 440 , the third plate body 430 , the fourth plate body 410 , the fifth plate body and the sixth plate body are surrounded by A box 400 is formed, in which the screen assembly 300 is installed at the opening 411 of the fourth plate 410, and the light source module 200 is connected to the light through hole of the third plate 430, so that the box 400 is connected to the screen assembly 300 and the light source module. 200 cooperate to form a fully enclosed structure. This arrangement makes the working environment of the light source light path airtight, avoids the influence of dust on the screen assembly 300, and also avoids the influence of dust on the heat dissipation of the light source module 200, and improves the use of the light source module 200. life.

Preferably, the box body 400 is surrounded by a plurality of blackened aluminum plates, and the aluminum plates can conduct the heat inside the box body 400 to the outside, and can block light, so as to avoid the influence of excess light on printing.

Referring to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 8 , FIG. 8 is a schematic diagram of a light source module in a light-curing 3D printing light source device provided by an embodiment of the present invention. In one embodiment, the light source module 200 includes a substrate 210 and lamp beads 220 , the lamp beads 220 are connected to the substrate 210 , and the side of the substrate 210 with the lamp beads 220 is disposed toward the adjustment assembly 100 , and the lamp beads 220 are used to provide illumination.

Specifically, the number of the lamp beads 220 is multiple to form a lamp bead array, and the lamp bead array provides an integral light source, which solves the problem of uneven light intensity in the splicing area between the lamp beads 220 . The lamp bead array is connected to the substrate 210, and the side of the substrate 210 with the lamp bead array is disposed toward the adjustment assembly 100, so that the integrating light source provided by the lamp bead array can be projected to the reflector 110, and then the integrating light source of the reflector 110 is reflected into the screen assembly 300, thus facilitating 3D printing.

Preferably, the lamp bead array adopts a small-angle multi-core array package to ensure uniform illumination in the molding area of a single lamp bead, and at the same time, the multiple lamp bead arrays ensure the light source intensity of the molding area.

In addition, the light source module 200 further includes a mounting plate 270 , the mounting plate 270 is disposed on the side of the substrate 210 facing the fourth plate body 410 , and the mounting plate 270 is connected to the first connecting plate 470 , thereby fixing the light source module 200 and the fourth plate body 410 . Preferably, the first connecting plate 470 disposed at the light-passing hole has a notch, which can avoid the influence on the light projected by the lamp bead 220 .

Referring to FIG. 7 and FIG. 8 , FIG. 7 is a schematic diagram of the installation of a lamp board and a shading plate in a light source device for photocuring 3D printing according to an embodiment of the present invention. In one embodiment, the light source module 200 further includes a light shielding plate 240 and a light plate 230 , the light plate 230 is connected to the substrate 210 , the lamp beads 220 are mounted on the light plate 230 , the light shielding plate 240 is provided with a light transmission hole 241 , and the light shielding plate 240 Connected to the lamp board 230 , the light-transmitting holes 241 are used to avoid the light projected by the lamp beads 220 .

Specifically, the lamp bead array is installed on the lamp board 230, the two edges of the lamp board 230 are provided with spaced protrusions 231, and the two sides of the light shielding plate 240 are spaced with notches. 240 is clamped to the lamp board 230, and at the same time, the side of the bump 231 facing away from the shading plate 240 is provided with a wiring port for wire connection. Preferably, the clamping plate 460 is provided with a wiring hole 461 , and the wiring hole 461 is used to avoid the wires connected to the bump 231 .

Further, the light-shielding plate 240 is provided with light-transmitting holes 241, and the light-shielding plate 240 opposite to each lamp bead 220 is provided with a corresponding light-transmitting hole 241. The light-transmitting holes 241 are used to avoid the light emitted by the lamp beads 220, which can ensure The angle of light emitted by each lamp bead 220 is consistent, and at the same time, the shading plate 240 shields some excess light from the mutual influence between the lamp beads 220, and solves the problem of the mutual interference of the lamp beads 220.

Referring to FIG. 2 , FIG. 3 and FIG. 8 , in the embodiment, the light source module 200 further includes a heat dissipation part 260 , the heat dissipation part 260 is connected to the substrate 210 and is disposed on one side of the lamp board 230 , and the heat dissipation part 260 is used for reducing the lamp beads 220 temperature.

Specifically, the heat dissipation part 260 includes a fan 261, a heat dissipation fin 262 and a heat dissipation hole. The fan 261 is connected to the base plate 210 and is disposed on one side of the light board 230. The heat dissipation fin 262 is disposed on the side of the base plate 210 away from the fan 261. On the base plate 210 and at a position corresponding to the fan 261 , the heat dissipation hole extends along the direction of the heat dissipation fin 262 toward the fan 261 . The fan 261 can timely transfer the heat generated by the lamp beads 220 to the heat sink 262, and then the heat sink 262 dissipates the heat into the air through the heat dissipation holes to realize the heat dissipation of the lamp beads 220, thereby ensuring the life of the lamp bead 220 array.

Preferably, the fan 261 is arranged outside the light-passing hole, and the heat sink 262 and the heat-dissipating hole are also arranged outside the light-passing hole, so as to prevent the fan 261 from bringing the dust from the outside into the box 400 through the heat-dissipating hole, thereby preventing The heating of the lamp beads 220 and the optical devices in the screen assembly 300 cause influences, thereby affecting the printing process.

Referring to FIG. 3 , in one embodiment, the light source module further includes a light blocking eaves 250 , the light blocking eaves 250 are connected to the substrate 210 , the light blocking eaves 250 are arranged between the light plate 230 and the screen assembly 300 , and the light blocking eaves 250 are used for Block excess light projected by the lamp beads 220 .

Specifically, since the lamp beads 220 on the side close to the light source module 200 are relatively close to the light source module 200, a part of the light emitted is reflected by the reflector 110 into the light source module 200, and another part of the light will affect the uniformity of the illumination of the screen assembly 300. The setting of the light blocking canopy 250 can just block the excess light directly projected by the lamp beads 220 into the screen assembly 300, so that all the light sources required by the screen assembly 300 are provided by the light projected by the reflector 110 reflecting the lamp beads 220, which ensures the illumination uniformity and perfect printing effect.

2 and 3, in one embodiment, the screen assembly 300 includes an LCD screen 310 and a condensing lens 320, the LCD screen 310 is connected to the condensing lens 320, the LCD screen 310 is disposed on a side away from the adjustment assembly 100, and the condensing lens 320 It is used to adjust the illumination provided by the light source module 200 .

Specifically, the condensing lens 320 is a Fresnel lens, which can collimate the light projected into the screen assembly 300, so that the light source projected into the LCD screen 310 is parallel light. Driven by the microcomputer and the display screen drive circuit, the computer program provides image signals, so that a selective transparent area appears on the LCD screen 310, wherein under the irradiation of light, the image transparent area of the LCD screen 310 reduces the blocking of ultraviolet light. Small, UV rays are blocked in areas not shown in the image. The parallel light converted by the Fresnel lens passes through the LCD screen 310, and the ultraviolet light forms the ultraviolet light image area. The liquid photocurable resin makes the resin irradiated by ultraviolet light produce a curing reaction, and the irradiated liquid resin becomes a solid state. The opaque part of the LCD screen 310 blocks the ultraviolet light, the liquid photocurable resin in the blocked part is not irradiated by the ultraviolet light, and the part of the resin that is not irradiated remains liquid. The cured resin is the product made by our 3D printer. The forming part is 3D printed.

Referring to FIG. 2, in one embodiment, the screen assembly 300 further includes a glass backing plate 330. The glass backing plate 330 is disposed between the LCD screen 310 and the condensing lens 320. One side of the glass backing plate 330 is connected to the LCD screen 310, and the other side is connected to the LCD screen 310. The side is connected to the condensing lens 320 , and the glass backing plate 330 is used to fix the LCD screen 310 and the condensing lens 320 .

Specifically, the screen assembly 300 further includes AB double-sided silica gel 350 , and the AB double-sided silica gel 350 is used for bonding the LCD screen 310 and the glass backing plate 330 . Among them, the A side of the AB double-sided silicone 350 is optical glue, which is used to bond the LCD screen 310, the B side is silicone, which is used to bond the glass backing plate 330, and the AB double-sided silicone 350 is used to fix the LCD screen 310 on the glass backing board. 330, so that the LCD screen 310 will not move under a large lateral force, which ensures the stability of the screen assembly 300. At the same time, the AB double-sided silicone 350 is easy to operate. When replacing the LCD screen 310, it is only necessary to unfasten the circuit board 311 of the LCD screen 310, lift the LCD screen 310 vertically, and remove the externally bonded AB double-sided silicone 350. The LCD screen 310 can be easily replaced without causing damage to the LCD screen 310.

Further, the fourth plate body 410 is provided with a fixing buckle 490 and a threaded hole. The fixing buckle 490 is composed of a screw and a rubber gasket. For connection, the nut on the screw is in contact with the glass backing plate 330 through the rubber gasket, and the glass backing plate 330 and the condensing lens 320 are fixed on the boss of the opening 411. The rubber gasket protects the glass backing plate 330 and also It can increase the friction force to prevent the glass backing plate 330 from shifting.

In addition, the screen assembly 300 further includes a tempered glass 340, the edge of the LCD screen 310 is provided with a slot, the tempered glass 340 is clamped to the LCD screen 310, and the tempered glass 340 is used to protect the LCD screen 310.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present utility model, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims

A light-curing 3D printing light source device, characterized in that the light-curing 3D printing light source device comprises:

a light source module (200), the light source module (200) is used for providing illumination;

a screen assembly (300), the light provided by the light source module (200) can be projected onto the screen assembly (300);

an adjustment assembly (100), the adjustment assembly (100) is disposed at the exit end of the light source module (200), and the angle of the adjustment assembly (100) relative to the light source module (200) can be adjusted;

A reflector (110), the reflector (110) is connected to the adjustment assembly (100), and the reflector (110) can reflect the light provided by the light source module (200) into the screen assembly (300) ).
The light source device for light curing 3D printing according to claim 1, further comprising a first board body (420) and a second board body (440), the first board body (420) being connected to the A second plate body (440), one end of the adjustment assembly (100) is slidably connected to the first plate body (420), and the other end is slidably connected to the second plate body (440).
The light source device for light curing 3D printing according to claim 2, characterized in that, the first plate body (420) and the second plate body (440) are provided with adjustment grooves (480), and the adjustment component (100) includes a first adjusting piece (130) and a second adjusting piece, the first adjusting piece (130) can be connected to the first plate body (420) through the adjusting groove (480), the The second adjusting member can be connected to the second plate body (440) through the adjusting groove (480), and the first adjusting member (130) and the second adjusting member can be connected to the adjusting groove (480). ) to move within.
The light-curing 3D printing light source device according to claim 3, characterized in that, the adjustment assembly (100) comprises a mirror bracket (120), and the mirror bracket (120) comprises a flexible connector (126), a support seat (122) and mounting bracket (121);

The reflector (110) is mounted on the mounting frame (121), one end of the first adjusting member (130) is connected to the mounting frame (121), and the other end passes through the adjusting groove (480), connecting the mounting bracket (121) to the first plate body (420);

The support base (122) is connected to the mounting frame (121) through the flexible connecting piece (126), the support base (122) can rotate relative to the mounting frame (121), and the second adjusting member One end is connected to the support seat (122), the other end passes through the adjustment groove (480), and the support seat (122) is connected to the second plate body (440), when the second adjustment member When the support base (122) is driven to move along the extending direction of the adjustment groove (480), the support base (122) can keep abutting on the second plate body (440).
The light-curing 3D printing light source device according to claim 4, characterized in that, a flange (123) protrudes from a side of the mounting bracket (121) opposite to the support seat (122), and the first adjustment One end of the piece (130) is connected to the flange (123), and the other end passes through the adjustment groove (480) to connect the flange (123) to the first plate body (420).
The light-curing 3D printing light source device according to claim 2, characterized in that, the light-curing 3D printing light source device further comprises a third board body (430) and a fourth board body (410), the third board body (410) The plate body (430) is connected to the second plate body (440), one end of the fourth plate body (410) is connected to the third plate body (430), and the other end is connected to the first plate body (430). 420), the light source module (200) is connected to the third board body (430); the fourth board body (410) is provided with an opening (411), and the screen assembly (300) faces the opening ( 411) is installed on the fourth plate body (410).
The light-curing 3D printing light source device according to claim 6, wherein the light-curing 3D printing light source device further comprises a fifth board body and a sixth board body, and one end of the fifth board body is connected to the The first plate body (420) has the other end connected to the third plate body (430), one end of the sixth plate body is connected to the first plate body (420), and the other end is connected to the third plate body (420). Plate body (430), the first plate body (420), the second plate body (440), the third plate body (430), the fourth plate body (410), the fifth plate body (410) The board body and the sixth board body are enclosed to form a box body (400), and the screen assembly (300) cooperates with the box body (400) to form a fully enclosed structure.
The light source device for light curing 3D printing according to claim 1, wherein the light source module (200) comprises a substrate (210) and lamp beads (220), and the lamp beads (220) are connected to the substrate (210), the side of the substrate (210) provided with the lamp beads (220) is disposed toward the adjustment assembly (100), and the lamp beads (220) are used to provide light.
The light source device for light curing 3D printing according to claim 8, characterized in that, the light source module (200) further comprises a shading plate (240) and a light plate (230), and the light plate (230) is connected to the The base plate (210), the lamp beads (220) are mounted on the lamp board (230), the light shielding plate (240) is provided with a light transmission hole (241), and the light shielding plate (240) is connected to the light shielding plate (240). The light plate (230) is provided, and the light-transmitting holes (241) are used to avoid the light projected by the lamp beads (220).
The light-curing 3D printing light source device according to claim 9, wherein the light source module further comprises a light-blocking eaves (250), and the light-blocking eaves (250) are connected to the substrate (210), so The light blocking eaves (250) are arranged between the light panels (230) and the screen assembly (300), and the light blocking eaves (250) are used for blocking excess light projected by the lamp beads (220).
The light source device for light curing 3D printing according to claim 1, wherein the screen assembly (300) comprises an LCD screen (310), a condensing lens (320) and a glass backing plate (330), the LCD screen (310) is connected to the condensing lens (320), the LCD screen (310) is arranged on the side away from the adjusting assembly (100), and the condensing lens (320) is used to adjust the light source module (200) ), the glass backing plate (330) is arranged between the LCD screen (310) and the condensing lens (320), and one side of the glass backing plate (330) is connected to the LCD screen ( 310), the other side is connected to the condensing lens (320), and the glass backing plate (330) is used for fixing the LCD screen (310) and the condensing lens (320).