KR20190140136A - a 3D printer SLD/DLP of Blade type - Google Patents

Abstract

The purpose of the present invention is to provide a three-dimensional printer blade device (1) which is applied to an SLA/DLP method applied three-dimensional printer to enable a high quality molded article to be manufactured by uniformly dispersing a mixed solution of powder and binder accommodated in a water tank, thereby stably conducting a three-dimensional molding operation. The three-dimensional printer blade device includes: a frame-shaped water tank (2) fixed to a base plate (14) of the three-dimensional printer (10), accommodating the mixed solution therein, and having an accommodation space opened in a lateral direction along which a printing bed (12) enters; a blade (3) disposed on the accommodation space of the water tank (2); and an operating means (4) having the blade (3) fixed thereto, and allowing the blade (3) to perform a linear reciprocating motion on the water tank. The operating means (4) includes: a fixing stand (42) having holding grooves (41), in which upper ends of the water tank (2) are received and guided, formed in bottom surfaces of both ends thereof; and an operating member (43) having a part to which a part of the fixing stand (42) is coupled, and allowing the fixing stand (42) to perform a linear reciprocating motion on the upper ends of the water tank (2) through kinetic energy generated by receiving power.

Description

Blade device for 3D printers {a 3D printer SLD / DLP of Blade type}

The present invention relates to a blade device for a 3D printer in which a mixture of powder and binder is accommodated in a 3D printer to which a SLA / DLP method is applied. More specifically, the 3D molding operation is stable by uniformly dispersing the mixed solution contained in a water tank. According to the present invention relates to a blade device for a 3D printer capable of producing a high-quality molding.

Generally, 3D printers, which are regarded as the most advanced technology of the 21st century, are printers that can produce molded products as they are in solid shapes based on three-dimensional data generated by computer design programs.

These 3D printers use the FDM (FusedDeposition Modeling) method, which pulls out a solid plastic material that melts in a heat like a thread and melts it down little by little. SLS (Slective Laser Sintering) method, which uses functional polymer or metal powder instead of photocurable resin in the SLA method and forms by scanning and solidifying laser beam, irradiates light to the bottom of the storage tank where the photocurable resin is stored There is a DLP (Digital Light Processing) method using the partially hardened principle.

In general, a 3D printer produces a three-dimensional object by outputting and stacking a production material (typically, an ABS resin) to a printing bed through a nozzle supported by an extrusion head.

In Korean Patent Application No. 10-2014-003340 (name: method for manufacturing dental implant prosthesis using a 3D printer / 2014.03.21.), As known in the publication, (a) a plurality of fixtures implanted in the alveolar bone Respectively fastening the links; (b) acquiring a 3D image of an oral environment in which a plurality of links are fastened; (c) designing a three-dimensional shape of the upper prosthesis that is fastened to surround the plurality of links based on the three-dimensional image; And (d) outputting the three-dimensional shape of the designed upper prosthesis to a 3D printer to produce the upper prosthesis. The method for manufacturing a dental implant prosthesis is described.

In addition, Korean Patent Application No. 10-2013-0085893 (name: dental braces manufacturing apparatus using a 3D printer / 2013.07.22.), As known in the publication, as a dental braces manufacturing apparatus using a 3D printer, It stores the scan data that needs to be corrected by the teeth, 3D modeling the tooth model for the scan data using the 3D CAD program loaded 3D model that reflects the correction data under the 3D CAD program A teeth braces design device unit which generates and stores orthodontic data, and completes braces design of a patient based on the 3D orthodontic data; And receiving the dental braces design information of the patient from the dental braces designing unit, and processing the dental braces according to the dental braces design information using a shape memory polymer (SMP) or a titanium alloy (Tialloy). A manufacturing apparatus including a 3D printer apparatus is described.

On the other hand, Korean Patent Application No. 10-2014-0084287 (name: DLP-type 3D printer / 2014.07.07.), As known in the publication, the resin storage tank in which the photocuring resin is stored; A DLP projector disposed below the resin reservoir and irradiating light corresponding to an axial cross-sectional image of a molded article to be molded into the resin reservoir; A molding stage provided to be capable of lifting upwards from a bottom of the resin storage tank and molding a molded product at a lower portion thereof; A projector transfer unit which supports the DLP projector so that the DLP projector is moved in the X-axis direction and the Y-axis direction; An image processing unit for dividing one cross-sectional image of the molded article into a plurality of sections corresponding to a plurality of molding areas to which the DLP projector is transported by the projector transporting unit and supplying the cross-sectional image to the DLP projector; The image processing unit and the projector transfer unit supply a plurality of divided images supplied from the image processing unit to the molding area to which the DLP projector is moved, and project the divided images supplied from each molding area to the resin storage tank. And a control unit for controlling the molding stage.

And in Korean Patent Application No. 10-2015-0062535 (name: 3D printer and 3D shape molding method / 2015.05.04.), As known in the publication, for 3D shape molding, photocurable A tank having a tubular shape to accommodate a solution; A molding stage disposed in the water tank, the molded stage being supported by the light projected onto the photocurable solution, and installed to be liftable with respect to the water tank; And a liquid crystal display device disposed between the light source, which is a light emitting object for curing the photocurable solution, and the water tank, and displaying an image for the three-dimensional shape.

1. Korean Patent Application No. 10-2014-003340 (2014.03.21.) 2. Korean Patent Application No. 10-2013-0085893 (2013.07.22.) 3. Korean Patent Application No. 10-2015-0118538 (2015.08.24.) 4. Korean Patent Application No. 10-2017-0132787 (2017.10.12.)

However, in the conventional 3D printer as described above, when the viscous liquid mixture is accommodated in the water tank, it is not evenly distributed so that the molding process of the molding is stable, there is a problem that a high-quality molding is not realized. .

The present invention has been proposed to solve the above conventional problems, an object of the present invention is applied to the 3D printer SLA / DLP method is applied to evenly disperse the mixed liquid mixed powder and binder contained in the water tank 3D The present invention provides a blade device for a 3D printer that is capable of producing a high-quality molding as the molding operation is performed stably.

In the blade device for 3D printer according to the present invention for achieving the object of the present invention as described above, the blade device for 3D printer is applied to the 3D printer to which the SLA / DLP method is applied to accommodate the mixed liquid mixed powder and binder ; A 'frame'-shaped tank fixed to the base plate of the 3D printer and having an accommodation space accommodated therein and opening laterally in which the printing bed enters; A blade disposed on the accommodation space of the tank; The blade is fixed and movable means configured to linearly reciprocate the blade on the tank; The movable means includes a fixed base formed on both bottom surfaces of the mounting grooves are accommodated and guided by the upper end of the tank; And a movable member configured to couple a portion of the stator to a portion and linearly reciprocate the stator at the top of the tank through the kinetic energy generated by receiving power.

The blade device for 3D printer according to the present invention, which is made in this way, is to distribute the mixed solution contained in the accommodating space of the tank evenly through the blade to be linear reciprocating inside the tank, it has the effect that the 3D molding operation is stable.

Accordingly, it has the effect of producing a high quality 3D molding.

1 and 2 is a schematic illustration showing a 3D printer to which the blade device for a 3D printer according to an embodiment of the present invention is applied.
Figure 3 is a schematic perspective view showing an extract of the blade device for 3D printer according to an embodiment according to the present invention.
4 and 5 is a schematic perspective view showing a movable means applied to the blade device for 3D printer according to the present embodiment.
6 and 7 is a schematic illustration showing an example of a movable member applied to the blade device for 3D printer according to the present embodiment.

Hereinafter, with reference to the accompanying drawings, the blade device for a 3D printer according to a preferred embodiment of the present invention will be described in detail.

Embodiments of the invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

1 to 7 is a view showing a blade device for a 3D printer according to an embodiment according to the present invention, the blade device for a 3D printer 1 according to this embodiment is a 3D printer (SLA / DLP method) is applied ( 10) is applied to the mixture of powder and binder is accommodated to form a 3D molding.

The 3D printer 10 in the above, the blade device (1) according to the present embodiment for receiving a mixed liquid mixed powder and binder; While irradiating the controlled light to the lower part of the water tank 2 constituting the blade device 1 according to the present embodiment through the control means for receiving and controlling the power supply of the power supply unit not shown, while curing the surface of the mixed solution An optical projector 11 for molding; And a printing bed 12 supporting the molded product that is cured by being irradiated with light emitted from the optical projector 11 from the water tank 2.

On the other hand, the lower portion of the water tank 2, it is preferable that a reflecting plate 13 to reflect the light emitted from the optical projector 11 and irradiate to the bottom surface of the water tank (2).

The blade device 1 for 3D printer according to the present embodiment is fixed to the base plate 14 of the 3D printer 10, the mixed liquid is received therein and the opening in the side direction in which the printing bed 12 enters. The tank 2 having a 'frame' shape having a receiving space; A blade 3 disposed on the receiving space of the water tank 2; And a movable means (4) to which the blade (3) is fixed and to cause the blade (3) to reciprocate linearly on the water tank (2).

That is, the mixed solution contained in the receiving space of the water tank 2 is evenly distributed through the blade 3 which is to linearly reciprocate in the inside of the water tank 2, thereby making the 3D molding work stable.

In the blade device 1 for the 3D printer according to the present embodiment as described above, the movable means 4 includes a fixing stand formed on both bottom surfaces of the mounting grooves 41 in which the upper end of the water tank 2 is received. 42); A part of the stator 42 is coupled to a part of the movable member 43 to linearly reciprocate the stator 42 at the top of the tank 2 through kinetic energy generated by receiving power; It is done by

That is, the stator 42 is guided through the mounting groove 41 at the upper end of the water tank 2 through the movable member 43 whose operation is controlled through a control means not shown, so that the linear reciprocating motion is performed. The blade 3 evenly distributes the mixed liquid contained in the water tank 2.

In the above, the blade (3) is made of a 'plate' shaped plate body; In the site located in the receiving space, a plurality of through holes 31 are mixed while the mixed solution is penetrated; In the linear movement of the blade (3) it is preferable to be dispersed while being mixed evenly while the mixed liquid is penetrated through the through holes (31).

Referring to the process of molding a 3D molding through the 3D printer 10 to which the blade device 1 for 3D printer 1 according to the present embodiment made as described above will be described in detail.

First, the mixture is supplied and filled in the receiving space of the water tank 2, and the mounting table 42 is mounted on the upper end of the water tank 2 through the movable member 43 under the control of a control means. ) Is guided through a straight reciprocating movement.

At this time, the mixed liquid contained in the water tank (2) is uniformly dispersed through the blade (3) linearly reciprocating on the receiving space.

The bottom surface of the printing bed 12 is disposed in close contact with the bottom surface (base plate) of the water tank 2 through the moving device 15 constituting the 3D printer 10, and then the water tank 2. The light generated from the optical projector 11 is supplied to the lower portion of the water tank 2 through the control through the reflecting plate 13 and the control means disposed at the lower portion of the) to form a molding having a desired shape into a plurality of divided surfaces. Printing is performed while forming by laminating.

At this time. In the process of printing the molding, while the molding is gradually printed in the vertical form, the mobile device 15 is interlocked so that the printing bed 12 is interlocked while being extended to the upper part of the molding. .

When the molding of the molding is completed through the above process, the molding is separated from the printing bed 12, and then the molding process may be sequentially applied to print another molding.

In the blade device 1 for the 3D printer according to the present embodiment, the rollers are axially coupled to the inner side surfaces of the mounting grooves 41 on the upper outer surfaces of the water tank 2. It is preferable that the guide groove 21 is formed so that 44 are accommodated and slid; According to the binding of the guide groove 21 and the rollers 44, it is most preferable that the stator 42 is prevented from flowing up and down during the linear reciprocating motion, thereby making the dispersion of the mixed liquid more stable.

In the blade device (1) for the 3D printer according to the present embodiment made as described above, the movable member 43 is controlled by the control means for generating a rotational force; A ball screw 46 for forward and reverse rotation on the base plate 14 through the rotational force generated by the motor 45; A screw pipe 47 coupled to the ball screw 46 while passing through the ball screw 46 so as to linearly move in the longitudinal direction of the ball screw 46 when the ball screw 46 is rotated; One end is fixed on a part of the holder 42 and the other end is fixed to the screw pipe 47 so that the linear movement of the holder 42 in the same direction during the linear movement of the screw pipe 47 ( 48); preferably comprises.

That is, according to the interlocking motion of the ball screw 46 and the screw pipe 47, the blade 3 fixed to the fixing table 42 is quietly and precisely linearly moved to make the dispersion of the mixed liquid more stable. Most preferably, it is to be performed.

One embodiment of the present invention described above is merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. . Therefore, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims.

1: blade unit 10: 3D printer
11: optical projector 12: printing bed
13: reflector 14: base plate
15: moving device 2: tank
21: guide groove 3: blade
31: through hole 4: movable means
41: mounting groove 42: holder
43: movable member 44: roller
45: motor 46: ball screw
47: screw tube 48: connecting rod

Claims (1)

In the blade device (1) for the 3D printer is applied to the 3D printer 10 to which the SLA / DLP method is applied to accommodate the mixed liquid mixed powder and binder;
The tank 2 of the 'frame' shape, which is fixed to the base plate 14 of the 3D printer 10 and has an accommodating space accommodated therein and opened in a direction in which the printing bed 12 enters. )Wow; A blade 3 disposed on the receiving space of the water tank 2; And a movable means (4) to which the blade (3) is fixed and to cause the blade (3) to reciprocate linearly on the tank;
The movable means 4,
Mounting grooves (41) formed at both ends of the mounting grooves 41 are received and guided the upper end of the tank (2); A part of the stator 42 is coupled to a part of the movable member 43 to linearly reciprocate the stator 42 at the top of the tank 2 through kinetic energy generated by receiving power; Blade device for 3D printer, characterized in that made.

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