KR20160024452A

KR20160024452A - 3D printer having multi-nozzle of different diameter

Info

Publication number: KR20160024452A
Application number: KR1020140111186A
Authority: KR
Inventors: 차기룡; 윤광식; 김영형; 조화주; 송호종; 김영태; 조용현; 국연호
Original assignee: 차기룡
Priority date: 2014-08-26
Filing date: 2014-08-26
Publication date: 2016-03-07

Abstract

The present invention relates to a 3D printer having a plurality of nozzles of different diameters for controlling the supplied speed of a thermoplastic laminated material and a laminated material amount, the controller comprising: a controller for receiving commands for forming three- A first nozzle, a second nozzle, and a third nozzle of at least one of extrusion size, color, and type of a laminated material to be extruded according to a command from the controller, An extrusion section for extruding the laminated material, a laminated workbench in which the laminated material is laminated by the extruded section and the printed molding is placed thereon, and an extrusion section for laminating the laminated material in the upper part of the laminated workbench in accordance with the instruction of the control section, X, Y, and Z).

Description

[0001] The present invention relates to a 3D printer having a plurality of nozzles having different diameters,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 3D printer having a plurality of nozzles of different diameters, and more particularly, to a 3D printer having a plurality of nozzles of different diameters for adjusting the feeding rate of a thermoplastic laminated material and the amount of laminated material will be.

Typically, a 3D printer is similar to printing type on a 2D printer. A 2D printer prints a 2D image by ejecting a digitized file onto an inkjet printer, which ejects the ink onto the paper surface. Instead, 3D printers, based on the input design, eject special polymeric materials or metal powders from inkjet printers, stack the materials on top of each other, and then use ultraviolet rays or laser to solidify the material into finished products.

Korean Patent Laid-Open Publication No. 2001-0033833 relates to a method and apparatus for manufacturing a three-dimensional object, and more particularly, to an apparatus for producing a three-dimensional object formed of a plurality of thin preformed sheets, Each sheet being cut by a cutting tool along an outline corresponding to the outline of the individual layer constituted by the sheet in the object.

The apparatus also includes a stripper applicator for cutting the sheet along the individual outline and applying a covering material to one side of the sheet before being joined to the next adjacent sheet on the side, Only the surface of the sheet within the individual outline is joined to the next adjacent sheet after the individual sheet is cut and joined to the next adjacent sheet on the side so that the remaining unjoined portion of the individual sheet that is not in the outline The next adjacent sheet and the three-dimensional object.

However, the above-mentioned conventional technique has a problem in that the shape of the three-dimensionally laminated thin sheets is inferior to the shape of the formed material by melting the material.

Further, there is a problem in that the adhesion strength is lowered due to the difference in the degree of curing of the joint, the separation of the materials and the structural integrity are not achieved, and the strength is weak.

Also, since the conventional apparatus can move only in the X-axis and the Y-axis, there is a restriction on the direction when moving, and thus there is a problem of the accuracy and quality of the appearance of the molding.

Korean Patent Publication No. 2001-0033833

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above and to provide a 3D printer having a plurality of nozzles having different diameters in order to adjust the feeding rate of the thermoplastic laminated material and the amount of the laminated material.

It is another object of the present invention to provide a method of manufacturing a laminated body by which an extruded portion for laminating a laminated material can be moved in three axial directions (X, Y, Z) so as to increase the smooth seam and fineness of the molding, And a 3D printer provided with the 3D printer.

Another object of the present invention is to provide a 3D printer having a plurality of nozzles having different diameters for preventing a small amount of laminated material from leaking out of the nozzles due to a nozzle support to prevent deformation of the molding.

The present invention provides a 3D printer having a plurality of nozzles having different diameters for forming a molding by using the thermoplastic laminated material of the present invention. The 3D printer includes a controller for receiving a command for forming a molding, A first nozzle, a second nozzle, and a third nozzle of at least one of extrusion size, color, and type of a laminated material to be extruded according to a command from the controller, An extrusion section for extruding the laminated material, a laminated workbench in which the laminated material is laminated by the extruded section and the printed molding is placed thereon, and an extrusion section for laminating the laminated material in the upper part of the laminated workbench in accordance with the instruction of the control section, X, Y, and Z).

Further, in the 3D printer having the plurality of nozzles of different diameters according to the present invention,

A replacement motor for replacing the nozzle with a specific nozzle selected from at least one of the plurality of nozzles, a heating unit for melting the laminated material before passing through the plurality of nozzles, And an extrusion motor for providing power for stacking the laminated materials melted by the extruder.

The supply section of the 3D printer having a plurality of nozzles of different diameters according to the present invention is characterized in that the speed at which the laminated material is fed and the amount of the laminated material are controlled in accordance with the instruction of the control section.

The nozzle head of the 3D printer having a plurality of nozzles of different diameters according to the present invention is characterized in that the nozzles are replaced with respect to the rotation axis at the center of the nozzle head when the nozzle head is replaced with a selected one of the plurality of nozzles .

Further, the nozzle head of the 3D printer having a plurality of nozzles of different diameters of the present invention may be arranged such that when a specific nozzle selected among a plurality of nozzles stops operating, a small amount of laminated material leaks from the nozzle to prevent deformation of the molding Characterized in that it comprises a nozzle pedestal.

As described above, the 3D printer having a plurality of nozzles of different diameters according to the present invention has the effect of adjusting the feeding speed of the thermoplastic laminated material and the amount of the laminated material.

According to the 3D printer having a plurality of nozzles having different diameters according to the present invention, it is possible to freely move the extrusion portion for stacking the lamination material in the three axial directions (X, Y, Z) so as to enhance the smooth seam and fine- There is an effect that the material can be laminated.

In addition, according to the nozzle holder of the 3D printer having a plurality of nozzles of different diameters according to the present invention, a small amount of the laminated material leaks from the nozzles, thereby preventing deformation of the molding.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view showing the overall configuration of a 3D printer having a plurality of nozzles of different diameters according to the present invention; Fig.
FIG. 2 is a perspective view of a 3D printer showing a moving part of a 3D printer having a plurality of nozzles of different diameters according to the present invention in detail; FIG.
3 is a side view and a top view showing a nozzle head of a 3D printer having a plurality of nozzles of different diameters according to the present invention in detail;
4 is a side view showing in detail a nozzle configuration of a 3D printer having a plurality of nozzles of different diameters according to the present invention.

Specific features and advantages of the present invention will be described in detail below with reference to the accompanying drawings. The detailed description of the functions and configurations of the present invention will be omitted if it is determined that the gist of the present invention may be unnecessarily blurred.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 3D printer having a plurality of nozzles of different diameters, and more particularly, to a 3D printer having a plurality of nozzles of different diameters capable of controlling a feeding rate of a thermoplastic laminated material and a laminated material amount will be.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view showing the overall configuration of a 3D printer having a plurality of nozzles of different diameters.

As shown in FIG. 1, there is a 3D printer having a plurality of nozzles for making a molding using a thermoplastic laminated material, and a control unit 100 for receiving a command to form a molding by inputting three-dimensional design data .

When the controller 100 receives the 3D design data of the article to be produced by the user, the controller 100 divides the 3D design data received by the controller 100 into a plurality of horizontal layers having a predetermined thickness, The extrusion unit 300 is moved to the same shape as the respective horizontal layer 3D design data on the upper surface of the stacking workbench 400 in the same shape as the horizontal layer 3D design data from the lowest layer among the horizontal layer 3D design data So that the laminated material is laminated.

The control unit 100 includes a supply unit 200 for supplying a stacked material mainly on the command of three-dimensional design data, an extrusion unit 300 for stacking the stacked materials to form a molding, A command is also issued to the moving part 500 which moves the material to be stacked.

In addition, there is a supply unit 200 for supplying the stacked material according to the command of the controller 100. The supply unit 200 is in contact with the extrusion unit 300 and supplies the material to be laminated to the extrusion unit 300.

In addition, the lamination material supplied through the supply part 200 may be a lamination material such as powder type or linear type.

In addition, the supply unit 200 can control the supply rate of the lamination material and the amount of the lamination material in accordance with the command of the control unit 100. [

For example, the feed rate of the lamination material can be controlled quickly or slowly so that the feed rate can be increased so that the lamination material can be laminated quickly, or the feed rate can be decreased so that the lamination material can be laminated slowly.

The extrusion portion 300 having a plurality of nozzles for laminating the thermoplastic laminated material to form a molding according to the command of the controller 100 can prevent the laminated material from leaking from the nozzle from which the laminated material is injected, (Not shown).

The nozzle pedestal 600 is positioned below the nozzles of the plurality of nozzles that have finished the laminated material injection, thereby preventing the remaining laminated material from flowing through the used nozzles.

In addition, the nozzle pedestal 600 may be folded when it is not necessary by using a hinge (not shown).

In addition, the stacking workbench 400, in which the stacking material is stacked by the extrusion unit 300 and the print molding is placed, is formed in a plane having a predetermined area for stacking the stacking materials.

The laminating workbench 400 has a rotation motor 401 for horizontally rotating about a vertical center axis of the plane so that the laminating workbench 400 can be rotated 360 degrees in the left and right directions to shorten the working time.

Further, the laminating workbench 400 may further include a heating unit (not shown) for removing the molding material fixed on the laminating workbench after the laminating material is stacked on the plane, and the manufacturing of the molding material through the lamination of the laminating material After completion, the upper surface of the stacking workbench is heated to a predetermined temperature so that the molding can be easily attached and detached using the heating unit.

The pushing portion 300 for stacking the lamination material on the upper side of the stacking workbench 400 according to the command of the controller 100 is configured to be movable in the three axial directions X, Y, Z by the moving portion .

2 is a perspective view of a 3D printer showing the moving part in detail.

As shown in FIG. 2, it is preferable that the moving unit 500 is moved in the X-axis, the Y-axis, and the Z-axis through a well-known moving method using a servo motor (numerical control) So that a sophisticated molding can be formed by having a wide mobility that can be stacked.

3 is a side view and a top view showing the nozzle head.

As shown in FIG. 3, each of the extrusion units 300 having a plurality of nozzles 302 has different diameters of nozzles, and may be replaced with nozzles 302 having a predetermined diameter, if necessary, have.

Further, at least one of the extrusion size, color, and type of the laminated material to be extruded is selected from among the first nozzle, the second nozzle and the third nozzle to extrude the laminated material.

In addition, when nozzles having different diameters are appropriately used as needed, nozzles having a larger diameter can improve the working speed. In particular, nozzles having a narrow diameter can be used to precisely form a molding requiring precise work.

In addition, the plurality of nozzles 302 commonly use one supply portion, and the nozzle 302 is replaced with a nozzle 302 having a required diameter when the lamination material is injected through the supply portion.

The plurality of nozzles 302 are formed in one nozzle head 301 and the one nozzle head 301 is rotated 360 degrees in the left and right directions about the rotational axis 303 of the nozzle head 301 It is possible that any one of the plurality of nozzles 302 is connected to the supply unit as needed.

3, a plurality of nozzles 302 are arranged, and the rotation axis 303 of the nozzle head is at the center. A plurality of nozzles 302 are arranged at a predetermined distance from the center of the nozzle head 301, It can be seen that the nozzle 302 is disposed.

4 is a side view showing in detail the nozzle configuration of one of a plurality of nozzles having different diameters.

As shown in 300b of FIG. 4, the nozzle head includes a replacement motor 306 so that a plurality of nozzles 302 can be replaced.

4, after the lamination material is supplied by the supply unit, the lamination material is extruded toward the nozzle by the extrusion motor 305, and the extruded lamination material is heated by the instant heating Melted and discharged through the nozzle 302.

Further, when the laminated material is extruded by the extrusion motor 305, it can be configured in the form of a piston motion by an up-down motion. At this time, the extrusion method of the piston motion type can precisely control the amount of the laminated material through the movement in the vertical direction.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken as a limitation of the scope of the present invention. Or modify it. Accordingly, the scope of the present invention should be interpreted by the appended claims to cover many of such variations.

100:
200:
300: extrusion part
301: nozzle head
302: nozzle
303:
304:
305: Extrusion motor
306: Replacement motor
400: laminated workbench
401: Rotary motor
500:
600: Nozzle base

Claims

In a 3D printer having a plurality of nozzles for making a molding using a thermoplastic laminated material,
A controller for inputting three-dimensional design data and issuing an instruction to form a sculpture;
A supply unit for supplying the laminated material according to an instruction of the control unit;
An extrusion unit for selecting one of the first nozzle, the second nozzle, and the third nozzle to extrude the laminated material by at least one of an extrusion size, a color, and a kind of a laminated material extruded according to an instruction of the control unit;
A stacking worktable on which a laminated material is stacked by the extruding unit and on which a printed molding is placed;
And a moving part for moving the extruded part for stacking the laminated material in the three axial directions (X, Y, Z) in the upper part of the stacking workbench according to the command of the control part
A 3D printer having a plurality of nozzles of different diameters.

The method according to claim 1,
The extruder
A nozzle head having a plurality of nozzles having different nozzle diameters;
A replacement motor for replacing at least one of the plurality of nozzles with a selected specific nozzle;
A heating unit for melting the laminated material before passing through the plurality of nozzles;
And an extrusion motor for providing power for stacking the laminated materials melted by the heat generating portion
A 3D printer having a plurality of nozzles of different diameters.

The method according to claim 1,
Wherein the supply unit controls the supply speed of the lamination material and the amount of the lamination material in accordance with an instruction from the control unit
A 3D printer having a plurality of nozzles of different diameters.

3. The method of claim 2,
Wherein when the nozzle head is replaced with a selected one of the plurality of nozzles, the nozzle is replaced around a rotation axis at the center of the nozzle head
A 3D printer having a plurality of nozzles of different diameters.

3. The method of claim 2,
Characterized in that the nozzle head includes a nozzle support for preventing a small amount of the laminated material from leaking from the nozzle to prevent deformation of the molding when the selected one of the plurality of nozzles stops operating.
A 3D printer having a plurality of nozzles of different diameters.