CN214820895U

CN214820895U - Photocuring 3D printing device

Info

Publication number: CN214820895U
Application number: CN202022835068.5U
Authority: CN
Inventors: 刘辉林; 唐京科; 陈春; 敖丹军; 张晓明
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-11-23
Anticipated expiration: 2030-11-30
Also published as: WO2022110554A1

Abstract

The embodiment of the utility model provides a photocuring 3D printing device, it includes: the device comprises a base, a supporting arm, a curing processing table, a light source assembly, a forming platform and a lifting assembly; the supporting arm is connected to the base, the curing processing table is connected to the middle part of the supporting arm, the lifting assembly is connected to the supporting arm, and the forming platform is connected to the lifting assembly; when LCD photocuring action is carried out, the lifting assembly drives the forming platform to descend to the curing processing platform, and the light source assembly processes emitted integral light and then acts on the LCD placed on the curing processing platform. The photocuring 3D printing device of this embodiment, it is through adopting the integral type light source as light source subassembly light source, the light intensity difference between different lamp pearls of solution that can be fine, and the relative light intensity of whole exposure area is even not had sudden change boundary, and its operation is stable, and control accuracy is high, and the photocuring that has solved the LCD screen is with high costs, the poor problem of quality.

Description

Photocuring 3D printing device

Technical Field

The utility model relates to a 3D prints technical field, especially relates to a photocuring 3D printing device.

Background

With the appearance of black and white LCD screens, the service life of the black and white LCD screens is prolonged continuously due to the increase of light transmittance, and the LCD screens have obvious advantages in the fields of resolution, printing precision, molding area and price in the field of photocuring, but the black and white LCD screens have higher requirements on the power, uniformity and collimation of an ultraviolet light source due to the increase of the molding area of the LCD screens. At present, most manufacturers adopt a distributed area exposure splicing technology, namely, a plurality of ultraviolet lamp beads are uniformly arranged in an array mode, and the defects are as follows: the light intensity of the splicing region between the lamp beads is extremely uneven; any damaged lamp bead can cause that one area can not be normally used completely; the difference between the lamp beads causes the optical difference between different areas to have obvious abrupt boundaries.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a photocuring 3D printing device to solve the inhomogeneous poor technical problem who leads to LCD photocuring quality of current light source.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an embodiment of the utility model provides a photocuring 3D printing device, include: the device comprises a base, a supporting arm, a curing processing table, a light source component, a forming platform, a lifting component and a material box; the supporting arm is connected to the base, the curing processing table is connected to the middle part of the supporting arm, the lifting assembly is connected to the supporting arm, the forming platform is connected to the lifting assembly, and the material box is arranged on the curing processing table; when carrying out the photocuring shaping, lifting unit drives the shaping platform descends to solidification processing platform department, the light source subassembly with light emission and pierce through in proper order solidification processing platform, set up in an LCD display screen on the solidification processing platform will the image projection that shows on the LCD display screen is to the silo.

Wherein the light source assembly comprises: the light source comprises an integral light source, a reflector and a collimating lens, wherein light emitted by the integral light source is reflected to the collimating lens through the reflector, and the collimating lens is used for collimating the reflected light.

Wherein the integral light source comprises: the circuit board and the matrix type are distributed and connected with the ultraviolet lamp beads on the circuit board.

Wherein, the reflecting surface of the reflector is provided with a coating layer.

The collimating lens is a Fresnel lens.

The reflecting mirror is connected to the base, the integral light source is connected to the curing workbench, and the collimating lens is connected to the lower table top of the curing workbench.

Wherein, the shaping platform includes: the cantilever is connected with the lifting assembly, the connecting seat is connected with the cantilever, and the curing plate is connected with the connecting seat.

Wherein, the lifting unit includes: the cantilever is connected with the lifting end of the sliding block and the driving mechanism.

Wherein the driving mechanism is a ball screw.

Wherein, the light source subassembly still includes the fin, the integral type light source connect in on the fin, the fin includes: the radiating fin body is provided with a connecting surface for connecting the integral light source, and a light blocking eave is arranged above the connecting surface.

Compared with the prior art, the photocuring 3D printing device of this embodiment, it is through adopting the integral type light source as light source subassembly light source, the light intensity difference between the different lamp pearls of solution that can be fine, and the relative light intensity of whole exposure area evenly does not have sudden change boundary, adopts ball screw to drive the shaping platform simultaneously and goes up and down, and its operation is stable, and control accuracy is high, has solved photocuring with high costs, the poor problem of quality.

The foregoing is a summary of the present invention, and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments, which is provided for the purpose of illustration and understanding of the present invention.

Drawings

Fig. 1 is the utility model discloses a photocuring 3D printing device's overall structure schematic diagram.

Fig. 2 is the utility model discloses a photocuring 3D printing device's side structure schematic diagram.

Fig. 3 is a schematic structural diagram of a cantilever portion of the photocuring 3D printing apparatus of the present invention.

Fig. 4 is a schematic structural diagram of a connecting seat portion of the photocuring 3D printing device of the present invention.

Fig. 5 is the utility model discloses a photocuring 3D printing device's curing plate partial structure schematic diagram.

Fig. 6 is a schematic diagram of a part of the structure of the magazine of the photocuring 3D printing device of the present invention.

Fig. 7 is a schematic view of a light source assembly portion of the light-curing 3D printing device of the present invention.

Fig. 8 is a schematic structural diagram of an integral light source portion of the photocuring 3D printing apparatus of the present invention.

Fig. 9 is a partially exploded view of the integrating light source and the heat sink of the light-cured 3D printing apparatus of the present invention.

Fig. 10 is a schematic side view of the heat sink body of the photo-curing 3D printing apparatus of the present invention.

Fig. 11 is a schematic structural diagram of a light shielding plate part of the photocuring 3D printing apparatus of the present invention.

Fig. 12 is the utility model discloses a photocuring 3D printing device's theory of operation sketch map.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

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

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

1. Referring to fig. 1 to 11, the present embodiment provides a photo-curing 3D printing apparatus, which includes: the device comprises a base 1, a supporting arm 2, a curing processing table 5, a light source assembly 6, a forming platform 4 and a lifting assembly 3; the supporting arm 2 is vertically connected to the base 1, the curing workbench 5 is connected to the middle of the supporting arm 2, the curing workbench 5 is used for placing an LCD and a material box 7 to be processed, the lifting assembly 3 is connected to the supporting arm 2, and the forming platform 4 is connected to the lifting assembly 2; when carrying out the photocuring shaping, lifting unit 3 drives forming platform 4 descends to solidification processing platform 5 department, light source subassembly 6 with light transmission and pierce through in proper order solidification processing platform 5, set up in an LCD display screen 8 on solidification processing platform 5 will the image projection that shows on the LCD display screen 8 is to the silo.

Referring to fig. 7 to 11 again, the light source assembly 6 includes: the light source device comprises an integral light source 62, a reflector 63 and a collimating lens 64, wherein light emitted by the integral light source 62 is reflected to the collimating lens 64 through the reflector 63, the collimating lens 64 is used for collimating the reflected light, and the collimated light is applied to LCD photocuring.

Referring again to fig. 8, the integrating light source 62 includes: circuit board 621 and matrix distribution connect in lamp pearl 622 on the circuit board 621. In this embodiment, the lamp bead 622 is an ultraviolet lamp bead. The lamp bead array that the matrix distributes singly adopts small-angle multicore array encapsulation, guarantees that single lamp bead shaping area illuminance is even, adopts many lamp bead arrays again to guarantee shaping area light source intensity. Wherein, the circuit board 621 is further provided with a plurality of first connection holes 6211.

In order to improve the reflection effect, a coating layer is arranged on the reflection surface of the reflector 63.

In this embodiment, the collimating lens 64 is a fresnel lens.

Referring to fig. 9 and 10 again, the photocuring 3D printing apparatus further includes a heat sink 61, and the integral light source 62 is connected to the heat sink 61.

Specifically, the heat sink 61 includes: the heat sink body 611, the heat sink body 611 has a connection surface 6112 for connecting the integral light source 62, and a light blocking eave 6111 is disposed above the connection surface 6112. The design of the light blocking eaves 6111 above the heat sink body 611 can effectively block the influence of the light source lateral redundant light source on the printing process.

Wherein, an air-cooled or water-cooled channel 6113 is further arranged on the heat sink body 611. The radiating fin adopts water cooling or forced air cooling to reduce lamp pearl array heat and guarantee lamp pearl array life-span.

Referring to fig. 11 again, the photo-curing 3D printing apparatus of the embodiment further includes a light shielding plate 65, a plurality of through holes 651 corresponding to the lamp beads 622 are disposed on the light shielding plate 65, and the light shielding plate 65 is connected to the circuit board 621. The light screen 65 guarantees that each lamp bead 622 emits light at angle consistency, and the light screen 65 shields some excessive light rays which influence each other between the lamp beads 622, so that the problem of mutual interference of the lamp beads is solved.

The light shielding plate 65 is further provided with a second connection hole 652 corresponding to the first connection hole 6211, and the light shielding plate 65 is connected to the circuit board 621 through screws penetrating through the first connection hole 6211 and the second connection hole 652.

Referring to fig. 1 and 2 again, the reflector 63 is connected to the base 1, the reflector 63 is connected to reflect the maximum amount of the ultraviolet light emitted from the integral light source 62 to the fresnel lens, the integral light source 62 is connected to the curing table 5, and the collimating lens 64 is connected to the lower surface of the curing table 5. Specifically, the curing workbench 5 is further provided with a slot 51 for placing the LCD, and the collimating lens 64 is located below the slot 51. And the magazine 7 is located on the upper surface of the LCD.

Wherein the forming table 4 comprises: the lifting device comprises a cantilever 41, a connecting seat 42 and a curing plate 43, wherein the cantilever 41 is connected to the lifting assembly 3, the connecting seat 42 is connected to the cantilever 41, and the curing plate 43 is connected to the connecting seat 42.

Specifically, referring to fig. 3 to 5 again, the suspension 41 includes a rear plate 411, a pair of left and

right plates

412 and 413 extending perpendicularly from the rear plate 411, and a front plate 414 connected between the left and

right plates

412 and 413, wherein an upper edge of the front plate 414 and an upper edge of a front end of the left and

right plates

412 and 413 together form a connecting platform 415. The connection seat 42 includes a top plate 422, a bottom plate 423, and a vertical plate 421 connected between the top plate 422 and the bottom plate 423. The top plate 422 is connected to the connecting table 415, and the connecting base 42 is connected to the suspension arm 41 through the screw 44, and by adjusting the screw 44, the horizontal relative position of the connecting base 42 with respect to the suspension arm 41 can be changed.

The curing sheet 43 includes: the plate body part 431 is connected to a left plate part 432 and a right plate part 433 on the upper plate surface of the plate body part 431, two waist-shaped holes 4321 are respectively formed in the left plate part 432 and the right plate part 433, the left plate part 432 and the right plate part 433 are connected to the bottom 423 of the connecting seat 42 and connected through screws, and the horizontal adjustment of the plate body part 431 is achieved through the matching of the waist-shaped holes 4321 and the screws. When the LCD is cured, the plate portion 431 is lowered by the elevating unit 3 and is deeply inserted into the photosensitive resin in the cassette.

As shown in fig. 1, the lifting assembly 3 includes: a guide rail 32 connected to the support arm 2, a slider 33 slidably connected to the guide rail 32, and a driving mechanism 31 connected to the support arm 2, wherein the suspension arm 41 is connected to the slider 33 and a lifting end of the driving mechanism 31.

In this embodiment, the driving mechanism 31 is a ball screw, which has the advantages of stable operation and high progress. The number of the guide rails 32 is two, and the guide rails are respectively positioned on two sides of the ball screw, so that the running stability of the lifting assembly 3 is further improved.

Wherein, in order to save the processing cost, the supporting arm 2 adopts aluminium or aluminium alloy section.

Compared with the prior art, the photocuring 3D printing device of the embodiment can well solve the light intensity difference among different lamp beads by adopting the integral light source; every lamp pearl can both optically cover whole exposure area, and individual lamp pearl damages and does not influence the complete machine work, and whole exposure area is even not have sudden change boundary to the light intensity, adopts ball screw to drive the shaping platform simultaneously and goes up and down, and its operation is stable, and control accuracy has solved the photocuring of LCD screen and has costed height, the poor problem of quality.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A photocuring 3D printing device, comprising: the device comprises a base, a supporting arm, a curing processing table, a light source component, a forming platform, a lifting component and a material box; the supporting arm is connected to the base, the curing processing table is connected to the middle part of the supporting arm, the lifting assembly is connected to the supporting arm, the forming platform is connected to the lifting assembly, and the material box is arranged on the curing processing table; when carrying out the photocuring shaping, lifting unit drives the shaping platform descends to solidification processing platform department, the light source subassembly with light emission and pierce through in proper order solidification processing platform, set up in the epaxial LCD display screen of solidification processing projects the image that shows on the LCD display screen to the magazine, wherein, the light source subassembly includes: the light source comprises an integral light source, a reflector and a collimating lens, wherein light emitted by the integral light source is reflected to the collimating lens through the reflector, and the collimating lens is used for collimating the reflected light.

2. The photocuring 3D printing device of claim 1, wherein the integral light source comprises: the circuit board and the matrix type are distributed and connected with the ultraviolet lamp beads on the circuit board.

3. The photocuring 3D printing device of claim 1, wherein a coating layer is provided on the reflective surface of the reflector.

4. The photocuring 3D printing device of claim 1, wherein the collimating lens is a fresnel lens.

5. The photo-curing 3D printing device according to claim 1, wherein the reflector is connected to the base, the integral light source is connected to the curing table, and the collimating lens is connected to a lower table of the curing table.

6. The photocuring 3D printing device of claim 1, wherein the shaping platform comprises: the cantilever is connected with the lifting assembly, the connecting seat is connected with the cantilever, and the curing plate is connected with the connecting seat.

7. The photocuring 3D printing device of claim 6, wherein the lifting assembly comprises: the cantilever is connected with the lifting end of the sliding block and the driving mechanism.

8. The photocuring 3D printing device of claim 7, wherein the drive mechanism is a ball screw.

9. The photocuring 3D printing device of claim 1, wherein the light source assembly further comprises a heat sink to which the integrated light source is attached, the heat sink comprising: the radiating fin body is provided with a connecting surface for connecting the integral light source, and a light blocking eave is arranged above the connecting surface.