CN218286722U

CN218286722U - Multifunctional material laser-induced light curing molding 3D printer

Info

Publication number: CN218286722U
Application number: CN202221590729.5U
Authority: CN
Inventors: 宋珂炜; 崔悦; 张泽; 孟祥义; 杨国瑞; 林伟业
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-01-13
Anticipated expiration: 2032-06-24

Abstract

The utility model belongs to the technical field of 3D printing equipment, and provides a multifunctional material laser-induced photocuring forming 3D printer, which comprises a machine body shell and a machine body upper plane; a box group is arranged on the upper plane of the machine body, a Z-axis 3D printing platform is arranged above the box group, and an X-axis process switching platform arranged on the shell of the machine body is arranged below the box group; the X-axis process switching platform is provided with a two-axis laser galvanometer system for laser scanning area change; the control system is used for realizing the motion control of the Z-axis 3D printing platform, the motion control of the X-axis process switching platform and the steering control of the two-axis laser galvanometer system; a digital model processing system is also included for recognizing the model file and converting it into a code file that can be recognized by the printer. The X-axis process switching platform is used for realizing high-precision forming of different functional materials, the process is simple, the forming efficiency is high, and 3D printing and manufacturing of multi-material nested models in any complex shapes can be realized.

Description

Multifunctional material laser-induced light curing molding 3D printer

Technical Field

The utility model belongs to the technical field of 3D printing apparatus, concretely relates to 3D printer.

Background

The multi-material functional parts (also called heterogeneous material functional parts) are generally formed by combining a plurality of materials according to a certain distribution rule. The part has excellent characteristics of shape control, material control, controllability and the like, so the part has wide application prospect in the frontier fields of aerospace, precise electronics, wearable equipment, medical engineering, even quantum science and the like. The processing area of the 3D printing technology can be deep into the part, and the accurate control capability is provided for materials accumulated on each point, line and surface in the part, so that the manufacturing potential of the multi-material functional part is realized. Because the traditional 3D printing technology can only be used for manufacturing a single material, and related materials, processes, equipment and even theories need to be proposed to solve the problem of 3D printing and manufacturing of complex multi-material functional parts. Until now, related achievements of multi-material 3D printing technologies have been reported in the scientific research and industrial circles, and more heterogeneous functional material parts, such as color parts, biological models, multifunctional circuit boards, micro sensors, and organizers, etc., are manufactured. However, with the development of science and technology, higher requirements are put forward on the manufacture of multi-material functional parts. In addition, the existing multi-material 3D printing technology and system have the problems of low printing precision, low printing speed, pollution phenomenon among heterogeneous materials, incapability of realizing printing of complex multi-material nested topological parts and the like, so that a more superior multi-material 3D printing method and system need to be provided, and the requirements of the industry are met. Compared with other 3D printing technologies, the photocuring 3D printing technology has higher forming precision. The many materials photocuring 3D printing system that present industry was realized most utilizes DLP's shaping principle, utilizes the line module of digital projection to realize the controllable shape shaping of each layer part promptly, realizes the manufacturing of 3D spare part after the multilayer stack.

However, although DLP process principle can realize the manufacture of multi-material parts, the forming precision of the 3D printing technology depends on the precision and resolution of the digital projection module. In addition, the equipment has the problems of serious occurrence, short service life, equipment redundancy and the like. The SLA photocuring technology for realizing the photocuring resin molding by utilizing laser induction not only has micron-sized manufacturing precision, but also has higher superiority in the aspects of manufacturability and stability. Therefore, the realization of high-precision manufacturing of special-function heterogeneous material parts by using laser needs to be solved urgently so as to improve the processing level in the technical field of intelligent manufacturing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the problem of recording in the technical background, provide a multi-functional material laser lures light curing molding 3D printer.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a multifunctional material laser-induced light-curing molding 3D printer comprises a machine body shell and a machine body upper plane;

a box group is arranged on the upper plane of the machine body, a Z-axis 3D printing platform is arranged above the box group, and an X-axis process switching platform arranged on the shell of the machine body is arranged below the box group;

a two-axis laser galvanometer system for laser scanning area change is arranged on the X-axis process switching platform;

the control system is used for realizing the motion control of the Z-axis 3D printing platform, the motion control of the X-axis process switching platform and the control of the two-axis laser galvanometer system and the box group;

a digital model processing system is also included for recognizing the model file and converting it into a code file recognizable to the printer.

The utility model discloses a preferred embodiment, box group includes material A magazine 5, material A ultrasonic cleaning magazine, hot air drying magazine, material B ultrasonic cleaning magazine and the material B box that plane length direction arranged in proper order on the organism.

The utility model discloses a preferred embodiment, material A magazine 5 and material B box all include the first box body of upper portion open-ended, and the bottom of first box body inside wall is fixed with the FPC film.

The utility model discloses a preferred embodiment, material A ultrasonic cleaning magazine and material B ultrasonic cleaning magazine all include the second box body, and supersonic generator is installed to the bottom of second box body.

The utility model discloses a preferred embodiment, hot air drying magazine includes upper portion open-ended third box body, all installs hot-blast fan on the both sides wall of third box body.

The utility model discloses an optimal implementation mode, Z axle 3D print platform include Z axle driving piece and with the coaxial fixed connection's of Z axle driving piece Z axle ball, be fixed with the fixed block on Z axle ball's the nut seat, fixedly connected with print platform on the fixed block, the vertical sliding connection in both sides of fixed block has Z axle linear guide, Z axle linear guide fixed mounting is parallel to each other with ball on the Z axle module.

The utility model discloses a preferred embodiment, X axle technology switching platform include X axle driving piece and with the X axle ball of the coaxial fixed connection of X axle driving piece, be fixed with the motion palette board on ball screw's the nut seat.

The utility model discloses a preferred embodiment, diaxon laser shakes mirror system includes rotates the speculum of connection on the motion tray, and one side of speculum is provided with the fixing base, installs 405nm wavelength variable power laser instrument and two laser on the fixing base and shakes the control motor that mirror and two laser shaken the mirror.

The utility model discloses a principle and beneficial effect: (1) The utility model adopts a single 405nm variable power laser to realize the light-induced molding of the light-cured resin, realizes the high-precision molding of different functional materials through an X-axis process switching platform, has simple process and high molding efficiency, and can realize the 3D printing and manufacturing of any complex-shaped multi-material nested model; the Z-axis 3D printing platform is coupled with the double-axis laser galvanometer system and then performs coupling motion during material switching, so that the relative topological relation of different material parts in the same part is ensured;

(2) The utility model discloses in, to in the material of difference, set up special ultrasonic cleaning magazine, adopt alcohol as the washing liquid. When the cleaning process is carried out, the printing platform is immersed in the cleaning material box, and the uncured resin is completely dissolved in alcohol under the action of ultrasonic waves, so that the cross contamination among different materials is effectively avoided.

(3) The utility model discloses in, print platform after the washing will carry out drying process. Through the drying of hot-blast fan, can send out remaining in print platform's alcohol can be clean effectively, alcohol sneaks into the material when avoiding printing once more, destroys the original performance of material.

(4) The utility model discloses in, adopt the variable power laser instrument of 405nm, can realize the change of laser instrument power to different characteristics light-cured resin and model structural feature, not only can effectively improve and print efficiency, also improved the universality and the printing precision of material.

(5) The utility model discloses in, provided the many materials digital model processing method of "modeling-assembly-section respectively-combination G code", compensatied the current not enough that lacks many materials 3D section software, also increased the utility model discloses a manufacturability to can realize the manufacturing of arbitrary complicated many materials nested part.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an embodiment of a 3D printer according to an embodiment of the present invention;

fig. 2 is a schematic process diagram of an embodiment of a 3D printing method for a multi-material gradient functional part according to an embodiment of the present invention;

fig. 3 is a process flow diagram of an embodiment of a method for 3D printing of a multi-material gradient functional part according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a sample in an embodiment of the present invention.

Reference numerals in the drawings of the specification include: the device comprises a machine body shell 1, a machine body upper plane 2, a Z-axis 3D printing platform 3, a printing platform 3-1, a fixed block 3-2, a Z-axis linear guide rail 3-3, a Z-axis ball screw 3-4, a Z-axis motor 3-5, an X-axis process switching platform 4, an X-axis linear guide rail 4-1, an X-axis ball screw 4-2, an X-axis motor 4-3, a material A material box 5, a material B material box 6, a material A ultrasonic cleaning material box 7, a material B ultrasonic cleaning material box 8, a hot air drying material box 9, a two-axis laser galvanometer system 10, a 405nm wavelength variable power laser 10-1, a laser galvanometer motor 10-2, a reflector 11, a control system 12, a display and man-machine interaction system 12-1 and a CAD digital model processing system 13.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "transverse", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of 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, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The application provides a multi-functional material laser induced light curing molding 3D printer, shown in basic figures 1-4, including engine body shell and the plane 2 on the engine body that sets up on engine body shell, the bolt fixedly connected with box group on the plane 2 on the engine body, the top of box group is provided with Z axle 3D print platform 3-1, the below of box group is provided with the X axle technology switching platform 4 of installing on engine body shell 1, install the diaxon laser galvanometer system 10 that is used for the regional change of laser scanning on the X axle technology switching platform 4.

The box group comprises a material A box 5, a material A ultrasonic cleaning box 7, a hot air drying box 9, a material B ultrasonic cleaning box 8 and a material B box which are arranged along the length direction of the upper plane 2 of the machine body. In this embodiment, material a magazine 5 and material B magazine all include by metal material make and upper portion open-ended first box body, the bottom bolt fixedly connected with FPC film of first box body inside wall, material a ultrasonic cleaning magazine 7 and material B ultrasonic cleaning magazine 8 all include by metal material make and upper portion open-ended second box body, the bottom screw fixed mounting of second box body has supersonic generator. In this embodiment, the hot air drying material box 9 includes a third box made of metal material and having an upper opening, and hot air fans are installed on two side walls of the third box along the width direction.

In the embodiment, the Z-axis 3D printing platform 3-1 comprises a Z-axis ball screw 3-4 and a Z-axis driving piece which are installed on a machine body shell, the Z-axis driving piece is a Z-axis motor 3-5, an output shaft of the Z-axis motor 3-5 is coaxially and fixedly connected with the ball screw, a fixing block 3-2 is fixedly connected onto a nut seat of the Z-axis ball screw 3-4 through bolts, the printing platform 3-1 is fixedly connected onto the fixing block 3-2 through four bolts, Z-axis linear sliding rails are vertically and slidably connected to two sides of the fixing block 3-2, and the Z-axis linear sliding rails are fixedly connected with the Z-axis ball screw 3-4.

In the embodiment, the X-axis process switching platform 4 comprises an X-axis driving part and an XZ-axis ball screw 3-4, the X-axis driving part is an X-axis motor 3-5, the X-axis ball screw 3-4 is transversely arranged, the X-axis motor 3-5 is fixedly connected with the machine body shell 1, an output shaft of the X-axis motor 3-5 is coaxially and fixedly connected with the X-axis ball screw 3-4, a moving tray is fixedly installed on a nut seat of the X-axis ball screw 3-4 through a bolt, X-axis linear guide rails 3-3 are horizontally connected to two sides of the moving tray in a sliding mode, and the X-axis linear guide rails are fixedly connected with the machine body shell 1.

One side of the motion tray is connected with a rotary reflector, and one side of the reflector is provided with a two-axis laser galvanometer system 10. The two-axis laser galvanometer system 10 comprises a fixed seat, one side of the fixed seat along the width direction is provided with a laser galvanometer motor 10-2, the other side of the fixed seat is fixedly provided with a 405nm wavelength variable power laser 10-1, and the other side of the fixed seat far away from a reflector is provided with another laser galvanometer motor 10-2.

In this embodiment, the system further comprises a control system 12, wherein the control system 12 is an existing computer or the like, and is used for realizing motion control of the Z-axis 3D printing platform 3-1, motion control of the X-axis process switching platform 4, and control of the two-axis laser galvanometer system 10 and the box group; also included is a CAD digital model processing system 13, which is an existing CAD digital model processor, for identifying CAD model files and converting them into G code files that can be identified by the printer, and the control system 12 is electrically connected to the CAD digital model processing system 13. The control system is electrically connected with a display and man-machine interaction system 12-1 to realize the man-machine interaction function.

When printing, firstly, the material composition type of the heterogeneous multifunctional material and the matching relationship between different material topological structures are determined. Second, modeling is performed. Modeling of the multi-material nested part model can be performed in commercial modeling software (UG, solidworks, proE, etc.); respectively establishing different material topological structures in the single heterogeneous material special function part, and storing the topological structures as STL format files; then, different material topological structures of the single heterogeneous material special function part are led into commercial SLA slicing software, and after the heterogeneous material special function part is assembled according to the original topological relation, G code files of the parts which do not pass through the material topological structure are respectively obtained; different materials will label "a", "B" at the head of each layer of the sliced G code, thus serving to distinguish different material properties; and finally, fusing G code files of different materials into a file, and adding a G code for controlling an X-axis process switching program into the G code.

When the printing process is started, the positions of the hardware are required to be adjusted and material parameters are determined, which specifically comprises the following steps:

referring to fig. 1, the distance from the plane of the printing platform 3-1 to the bottom surface of the resin tank (material a box 5 or material B box 6) is adjusted by the Z-axis 3D printing platform 3, so that the focus of the ultraviolet laser is aligned with the bottom surface of the resin tank; wherein, resin material is placed in the resin groove, and the material in each resin groove corresponds to the material that the 3D model of exotic material special function part set for.

Moving a printing plane to a distance between the printing plane and the bottom surface of the material A box 5 or the material B box by controlling the Z-axis 3D printing platform 3-1, wherein the distance is the thickness of one layer of slices (0.01 mm-1 mm); the ultraviolet laser excited by the laser with the wavelength of 405nm and the variable power 10-1 scans the pattern corresponding to the current slice layer under the control of the laser galvanometer motor 10-2 so as to complete the printing of the current layer; if other materials exist in the current layer or the next layer is inconsistent with the current layer, the X-axis process switching platform 4 starts to move, and the material is washed, dried and transferred to the position below a material box 5 made of another material A;

step 4, when a cleaning program needs to be carried out, the X-axis process switching platform 4 moves to the position of the material A ultrasonic cleaning material box 7 or the material B ultrasonic cleaning material box 8, and the Z-axis 3D printing platform 3-1 moves to enable the printing platform 3-1 to be immersed in the material A ultrasonic cleaning material box 7 or the material B ultrasonic cleaning material box 8 filled with alcohol (cleaning liquid); starting an ultrasonic generator, and returning the Z-axis 3D printing platform to the original height after the cleaning time is 1-5 minutes;

when a drying program needs to be carried out, the X-axis process switching platform 4 moves to the position of the hot air drying material box 9, and the Z-axis 3D printing platform 3-1 moves to enable the printing platform 3-1 to move to the middle position of the hot air drying material box 9; and the hot air fan is started to form hot air convection, so that the residual alcohol on the surface of the printing platform 3-1 is volatilized.

Referring to fig. 2 and fig. 3, after the above-mentioned process flows or sub-process flows are circulated and combined many times, the manufacturing of the heterogeneous material parts with special functions can be realized, and after the manufacturing is completed, the 3D printing platform 3-1 is taken down, and after the workpiece is sufficiently cleaned and dried, the manufacturing of the target part can be completed, as shown in the schematic diagram of the sample printed by the process shown in fig. 4.

In this embodiment, the applied material includes all the photo-curing resins with different colors and using ultraviolet light with a wavelength of 405nm as a sensitive source, which may be a common photo-curing resin, a flexible photo-curing resin, an elastic photo-curing resin, a water-washable photo-curing resin, a nylon photo-curing resin, an ABS-like photo-curing resin, an acrylic-like photo-curing resin, or a castable photo-curing resin; the special slurry obtained by modifying the light-cured resin serving as the matrix comprises special conductive light-cured resin, special UV ceramic slurry, special dielectric light-cured resin, special piezoelectric light-cured resin, special luminous light-cured resin and the like.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means 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 do not 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.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multifunctional material laser-induced light-curing molding 3D printer is characterized by comprising a machine body shell and a machine body upper plane;

a two-axis laser galvanometer system for changing a laser scanning area is arranged on the X-axis process switching platform;

the control system is used for realizing the motion control of the Z-axis 3D printing platform, the motion control of the X-axis process switching platform, and the control of the two-axis laser galvanometer system and the box group;

2. The laser-induced light-curing molding 3D printer of multifunctional materials as claimed in claim 1, wherein the set of cartridges comprises a material A cartridge, a material A ultrasonic cleaning cartridge, a hot air drying cartridge, a material B ultrasonic cleaning cartridge and a material B cartridge, which are sequentially arranged along the length direction of the upper plane of the printer body.

3. The multifunctional material laser-induced photocuring molding 3D printer as claimed in claim 2, wherein the material A box and the material B box each comprise a first box body with an upper opening, and an FPC film is fixed at the bottom of the inner side wall of the first box body.

4. The laser-induced light-curing forming 3D printer for multifunctional materials as claimed in claim 3, wherein the material A ultrasonic cleaning box and the material B ultrasonic cleaning box belong to a second box body, and an ultrasonic generator is installed at the bottom of the second box body.

5. The laser-induced light-curing molding 3D printer of multifunctional materials as claimed in claim 4, wherein the hot air drying magazine comprises a third box body with an upper opening, and hot air fans are installed on two side walls of the third box body.

6. The multifunctional material laser-induced photocuring forming 3D printer of claim 5, wherein the Z-axis 3D printing platform comprises a Z-axis driving member and a Z-axis ball screw coaxially and fixedly connected with the Z-axis driving member, a fixing block is fixed on a nut seat of the Z-axis ball screw, the printing platform is fixedly connected onto the fixing block, Z-axis linear guide rails are vertically and slidably connected to two sides of the fixing block, and the Z-axis linear guide rails are fixedly mounted on the Z-axis module and are parallel to the ball screw.

7. The laser-induced light-curing molding 3D printer of multifunctional materials as claimed in claim 6, wherein the X-axis process switching platform comprises an X-axis driving member and an X-axis ball screw coaxially and fixedly connected with the X-axis driving member, and a moving tray plate is fixed on a nut seat of the ball screw.

8. The multifunctional material laser-induced photocuring forming 3D printer of claim 7, wherein the two-axis laser galvanometer system comprises a reflecting mirror rotatably connected to the moving tray, a fixed seat is arranged on the other side of the reflecting mirror, and a 405nm wavelength variable power laser, two laser galvanometers and control motors for the two laser galvanometers are mounted on the fixed seat.