KR20150117723A - Three-dimensional printer having a smooth finishing tool device - Google Patents

Abstract

The present invention relates to a three-dimensional printer having a device part for a finish process, and, more specifically, to a three-dimensional printer having a device part for a finish process that can perform a smooth finish process on the surface of a 3d-laminated printing sculpture. The 3D printer, which stacks print sculptures by using thermoplastic material for lamination, comprises: a control unit wherein 3D design data are input and divided into a plurality of horizontal layers; a compress unit wherein the thermoplastic material for lamination is stacked in the shape of the 3D design data divided by the control of the control unit; and a lamination unit wherein print sculptures which are formed from the material arranged in layers in the compress unit are settled, a finish unit wherein the surfaces of the print sculptures, which are settled on the upper side of the lamination unit, are smoothed as a final process and a location movement unit which operates depending on the control of the control unit to move the compress unit and finish unit towards the multi-axis (X, Y, Z) directions.

Description

THREE-DIMENSIONAL PRINTER HAVING A SMOOTH FINISHING TOOL DEVICE WITH FINE FINISHING TOOL DEVICE

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 3D printer having a finishing tool portion, and more particularly, to a 3D printer having a finishing tool portion capable of finishing the surface of a print molding to be laminated in three dimensions.

In recent years, 3D printers capable of three-dimensionally stacking three-dimensionally shaped objects have been spreading. These 3D printers enable the development of pre-production prototypes inexpensively and quickly, and are also being applied to the production of small quantities of various products. In a typical 3D printer, three-dimensional modeling is divided into a plurality of horizontally dividing layers at regular intervals, and layers are stacked (printed) on the respective divided layers to produce a layered three-dimensional molding.

Figure 1 shows a typical 3D print print molding 10 as disclosed in U.S. Patent No. 8,123,999 wherein the surfaces 12, 14, 16 and 18 of the printed molding 10 have horizontal (Stair-Stepping Effect).

Even today's high-performance 3D printers can not smoothly process the surface of the printed sculpture so that the stair laminating effect does not appear in the horizontal direction, and the roughly stacked sculptured state is visually visible. A high performance 3D printer having a lamination height of 0.1 mm has a problem in that it has the same luster and surface as a plastic product molded from a mold.

Accordingly, in order to smoothly process the surface roughness caused by the step laminating effect generated in the conventional 3D printer, the surface of the printed molding using a thermoplastic material is heat treated by a heat source such as laser or hot air to melt the surface, Acrylonitrite Butadiene Styrene (VLP) resin coatings were developed by vapor polishing by exposure to a chemical vapor of a solvent such as acetone.

However, the conventional heat treatment melting method can not finely finish the surface of the molding, and the steam polishing using the acetone vapor can not finely finish the surface of the molding, There has been a problem of generating toxic gas.

1. US registered patent US 8,123,999 B2 (Feb. 28, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a 3D printer having a finish machining tool part capable of finishing an outer surface (surface) without performing a fusing heat treatment or a steam polishing treatment on the surface of a print molding, .

Another object of the present invention is to provide a 3D printer having a finish machining tool part capable of adjusting the finishing form of the outer surface (surface) according to the use purpose (industrial use, education use) of the 3D printer or the user setting.

In order to achieve the above object, a 3D printer having a finishing tool according to the present invention is a 3D printer for laminating a print molding using a thermoplastic laminated material. The 3D printer includes a plurality of horizontal layers, A laminated work table on which a compressor for stacking a thermoplastic laminated material in a shape of a 3D design data divided according to an instruction of the controller and a printed molding formed by stacking a laminated material by the extruder is seated, And a position shifting unit for shifting the extruder and the processing tool unit in the direction of the multi-axis (X, Y, Z) under the control of the control unit, in order to finish the surface of the print molding placed on the upper surface .

The extruder further includes an extruded stem portion driven in three axial directions (X, Y1, Z1), a laminated material extruding motor coupled to the extruded stem portion, and a heat source for melting the laminated material supplied by the laminated material extruding motor And an extruding tip portion for extruding the laminated material melted by the heat generating portion.

Further, the machining tool unit may include a tool base driven in three axial directions (X, Y2, Z2), a tool rotation motor coupled to a lower end of the tool base, a horizontal rotation axis coupled to a rotation axis of the tool rotation motor, And a grinding tool coupled to the grinding wheel to grind the surface of the print molding.

The stacking workbench further includes a vertical rotation unit including a motor for horizontally rotating the plane on a top surface and a center axis perpendicular to the plane.

In addition, the position shifting unit may include a plurality of stepper motors for individually feeding the extruder and the machining tool unit along the X axis, the Y axis, and the Z axis.

The apparatus may further include a temperature control unit for heating or cooling the temperature of the work space between the stacking workbench and the position shifting unit.

Further, the present invention is characterized by further comprising a conveying conveyor for conveying the print molding, which is laminated and formed on the upper surface of the stacking workbench, to the outside of the work space.

As described above, according to the 3D printer provided with the finishing tool portion according to the present invention, the surface of the laminated print molding can be finely processed through a machining tool portion, ) Can be produced.

Further, according to the 3D printer provided with the finishing tool portion according to the present invention, it is possible to control the shape of the finishing process (removal of the sharp portion for education) according to the use purpose (industrial use, education use) It is effective.

Figure 1 is a perspective view of a typical printed molding of a conventional 3D printer.
2 is a block diagram of a 3D printer with a finishing tool according to the present invention;
3 is a view showing lamination using an extruder of a 3D printer provided with a finishing tool part according to the present invention.
4 is a view showing the operation of a nozzle and a machining tool portion of a 3D printer provided with a finishing tool portion according to the present invention.
FIG. 5 is a conceptual diagram comparing before and after the surface machining of a printed molding laminated by a 3D printer equipped with a finishing tool according to the present invention. FIG.
FIG. 6 is a flowchart showing a method of dividing 3D design data according to a second embodiment of a 3D printer having a finishing tool according to the present invention. FIG.
7 is a view showing a lamination of a laminated material according to Embodiment 2 of a 3D printer provided with a finishing tool portion according to the present invention.
8 is a view showing a lamination of a laminated material according to Embodiment 3 of a 3D printer provided with a finishing tool portion according to the present invention.
9 is a view showing the inclination of a stacking workbench according to Embodiment 3 of a 3D printer provided with a finishing tool portion according to the present invention.
10 is a block diagram according to Embodiment 4 of a 3D printer provided with a finishing tool portion according to the present invention.
11 is a view showing a plane of a stacking workbench according to Embodiment 5 of a 3D printer provided with a finishing tool portion according to the present invention.
12 is a view showing an extruder according to Embodiment 6 of a 3D printer provided with a finishing tool portion according to the present invention.
13 is a block diagram according to Embodiment 7 of a 3D printer having a finishing tool portion according to the present invention.

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

FIG. 2 is a block diagram of a 3D printer equipped with a finishing tool according to the present invention, FIG. 3 is a view showing a lamination using an extruder of a 3D printer having a finishing tool according to the present invention, Fig. 5 is a view showing the operation of the nozzle and the machining tool part of the 3D printer with the finishing tool part according to the invention, 6 is a flowchart showing a method of dividing 3D design data according to Embodiment 2 of a 3D printer provided with a finishing tool portion according to the present invention, and Fig. 7 is a flowchart showing a method of finishing machining tool according to the present invention, FIG. 8 is a view showing the stacking of the laminated material according to the second embodiment of the 3D printer provided with the part 9 is a view showing the tilting of the stacking workbench according to the third embodiment of the 3D printer provided with the finishing tool portion according to the present invention, and Fig. 10 is a view showing the tilting of the stacking workbench according to the present invention 11 is a view showing a plane of a stacking workbench according to Embodiment 5 of a 3D printer provided with a finishing tool portion according to the present invention 12 is a view showing an extruder according to Embodiment 6 of a 3D printer provided with a finishing tool portion according to the present invention, and Fig. 13 is a perspective view of a 3D printer according to Embodiment 7 of the present invention having a finishing tool portion according to the present invention Block diagram.

2 is a block diagram of a 3D printer 100 having a finishing tool part 140 according to the present invention. As shown in the block diagram, the present invention includes a stacking workbench 110, a stacked material storage container 120, The controller 160 includes an extruder 130, a machining tool 140, a position shifter 150 and a controller 160. The controller 160 controls the 3D design data 170 (modeling data) And controls the extruder 130 according to the input 3D design data 170 to stack the laminate material 122 on the upper surface of the laminate workbench 110.

More specifically, when the control unit 160 receives the 3D design data 170 of an article to be produced by the user, the controller 160 converts the 3D design data 170 received by the controller 160 into a plurality of horizontal layers having a predetermined thickness The 3D design data 170 is divided and the 3D design data 170 is divided into the horizontal layer 3D design data (sectional shape data) in order from the lowest layer among the plurality of divided horizontal layer 3D design data on the upper surface of the stacking workbench 110 The extruder 130 moves in the same shape as the respective horizontal layer 3D design data (cross-sectional shape data), thereby stacking the lamination material 122.

In addition, it is preferable that the thickness of each horizontal layer 3D design data (cross-sectional shape data) is set to be the same as the thickness to be laminated through the extruder 130.

FIG. 3 is a view illustrating a lamination using an extruder of a 3D printer provided with a finishing tool according to an embodiment of the present invention. The lamination process will be described below with reference to FIG. 2 or FIG.

The laminate material is transferred from one side of the 3D design 170a divided by the horizontal layer through the extruder 130 as shown in 302 for lamination, such as the 3D design 170a, (122) are stacked to produce a single layered print molding (PO).

The moving path (lamination direction, moving angle, moving speed) of the extruder 130 for stacking the lamination path 130a of the lamination material 122, PO laminated through the extruder 130, that is, the lamination material 122, The X-axis and the Y-axis (including Z-axis transport during the formation of the next layer) are fed to the extruder 130 in accordance with the control signal of the controller 160, (122) are stacked.

As described above, when the stacking of the 3D design 170a divided into one horizontal layer is completed, the extruder is moved to the Z (more detailed) shape in the shape of the 3D design 170b (not shown) Z1) and stacked on the upper surface of the 3D design 170a divided into the stacked horizontal layers.

In order to move the extruder 130 as described above, the extruder 130 includes an X-axis, a Y-axis, and a Z-axis transfer unit (not shown), and the transfer unit may include a well known servo motor It is preferable that the X-axis, the Y-axis, and the Z-axis are conveyed through the used conveyance method.

The stacking stage 110 includes a plane 114 on which a print molding PO formed through the extruder 130 is stacked and the plane 114 is formed by initial deposition of the lamination material 122 (Not shown) for heating the laminated material 122 to a predetermined temperature in accordance with the laminated material 122.

The plane 114 of the stacking workbench 110 may further include a vertical rotation unit 112 having a built-in motor so as to be horizontally rotatable about a vertical axis B located at the center, The working time can be shortened by spraying the lamination material 122 through the extruder 130 while rotating the plane 114 through the vertical rotation part 112 as described above.

More specifically, when the cross-sectional shape to be laminated or the print molding object (PO) to be laminated has a circular shape (like the movement path 130b) or a curved shape with respect to the vertical axis B as shown in 302, The laminate material 122 is laminated in the circular shape 130b through the extruder 130 while rotating the laminate material 112 around the vertical axis B in the horizontal direction.

Accordingly, the stacking speed can be increased by shortening the distance and the movement time of the extruder 130 in the X and Y axes, and the rotation of the vertical rotation unit 112 about the vertical axis B can be realized by the 3D design data The control unit 160 controls the 3D design data so that the portion that can be stacked in the circular shape 130b is centered on the vertical axis B when the controller 160 receives the 3D design data and converts the 3D design data into a plurality of horizontal 3D- So as to be laminated.

The working space part 116 is formed by partially or entirely enclosing the space between the stacking workbench 110 and the position shifting part disposed at the upper part of the stacking workbench 110, It is preferable that the temperature is controlled by a temperature control unit 118 capable of controlling the cold temperature so as to rapidly cool or harden the printed molding material PO at a predetermined temperature.

In order to automate the operation of the 3D printer 100 or improve the productivity, a conveying conveyor (not shown) for transferring the laminated workpieces PO to the outside of the work space 116 is provided on the upper surface of the stacking workbench 110 (Not shown).

The laminated material storage container 120 is disposed in close proximity to the stacking workbench 110 to store the laminated material 122. In the case of implementing various colors, the plurality of laminated material housings 120, And may further include a container 120.

The laminated material 122 is preferably made of a thermoplastic engineering plastic powder such as PC (Poly Carbonate), ABS (Acrylonitrile Butadiene Styrene) or PC-ABS resin having excellent impact strength. However, other thermoplastic resin materials It is possible.

In addition, an inorganic pigment, an organic pigment, or the like of a metal oxide may be blended in the laminate material 122 for a printed molding (PO) of various colors.

The extruder 130 includes an extruded stem portion 132 driven in three axial directions X, Y1 and Z1 to stack the printed molding objects PO, A heating section 136 for melting the lamination material 122 supplied by the lamination material extrusion motor 132 and a heating section 136 for melting the lamination material 122 melted by the heating section 136 are extruded And a plurality of extruders 130 are provided in accordance with the color to realize various colors of the print molding PO.

The laminated material extrusion motor 132 draws the laminated material 122 through the hose connected to the laminated material storage container 120 and pushes the laminated material 122 toward the heating portion 136. The extruded laminated material 122 is heated by the heating portion 136, Instantly melted and discharged through the extruder tip portion 138.

4 is a side view of a 3D printer with a finish machining tool according to an embodiment of the present invention, showing an extruder 130 and a machining tool 140, 401 is a side view, and 402 is a plan view.

As described above, when the stacking of the printed molding objects PO is completed, the surface of the printed molding object PO is processed along the outline of the 3D design data 170 initially input through the processing tool unit 140 .

More specifically, the processing tool unit 140 is a tool (not shown) driven in three axial directions (X, Y, Z) for finishing (postprocessing) the surface of the printed molding material PO which has been laminated and cured by the extruder 130 A tool rotation motor 144 coupled to the lower end of the tool rest 142, a horizontal rotation shaft 146 coupled to the rotation shaft of the tool rotation motor 144, And a grinding tool 148 for grinding the surface of the print molding PO. The tool rotation motor 144, the horizontal rotation shaft 146, the grinding tool 148 and the like are vertically formed , And a machining angle changing servomotor (not shown), and may be inclined at various angles within 180 degrees (180 degrees below the horizontal line) as in A.

That is, the surface of the print molding PO can be processed in the horizontal direction, or the surface of the print molding PO can be processed in the oblique direction or the vertical direction.

The extruder is capable of moving in the X axis through the X axis transfer line 151 and is capable of transferring the Y axis Y1 through the Y axis transfer line 152a, The X-axis movement is possible through the transfer line 151, and the Y-axis Y2 transfer is possible through the Y-axis transfer line 152b.

That is, the extruder 130 and the machining tool 140 share an X-axis (X-axis transfer line 151), and an independent separate Y (not shown) for Y-axis and Z- Axis and a Z-axis (more specifically, a Y1 axis, a Y2 axis, a Z1 axis, and a Z2 axis having different transfer lines).

When the stacking of the print workpieces PO is completed, the extruder 130 returns to the outline (initial position) along the X-axis transfer line 151 as shown by the arrows, And approaches the print molding (PO) through the X-axis and the Y-axis.

Therefore, the extruder 130 and the machining tool 140 may not collide with each other while sharing the same X-axis.

The tool rotating motor 144 coupled to the lower end of the tool rest 142 rotates the horizontal rotating shaft 146 and rotates the grinding tool 148 coupled to the end of the horizontal rotating shaft 146 ) Is processed.

At this time, a pressure sensor, a touch sensor, or the like may be further included at the end of the horizontal rotary shaft 146, or may be processed to a predetermined pressure through a pressure sensor, a touch sensor, or the like.

The position shifting unit 150 is configured to move the processing tool unit 140 and the extruder 130 along the X axis transfer line 151 and the Y axis transfer lines 152a and 152b and the Z axis transfer line And a plurality of stepper motors for independently feeding multiple axes (X-axis, Y-axis, Z-axis), and the stepper motor is coupled to a driving frame (not shown) of an LM guide (Linear Motion Guide).

Further, an encoder (Encoder) capable of grasping an absolute position can be mounted on each stepper motor or LM guide (Linear Motion Guide) to communicate with the controller 160.

As described above, the machining tool 140 and the extruder 130, which are capable of three-axis feed, can move and work (laminate or process) in an oblique direction by combining two or more axial feeds as well as respective axial feeds have.

The control unit 160 includes an extruder 130, a processing tool unit 140, and a position shifting unit 150. The extruder 130 is formed of a hardware such as a PC (Personal Computer) or a PLC (Programmable Logic Controller) And a program for controlling the extruder 130, the machining tool 140 and the position shifter 150 so that the shape of the print molding PO can be stacked and finished, and a control program for controlling them are mounted .

In addition, the 3D design data 170 may be generated by designing a printed molding (PO), converting the 3D model into 3D data, transmitting the data on-line to the controller 160, or outputting the model in an off- And is not particularly limited as data.

The machining tool 140 may further include a turret (not shown), and may be exchanged with another rotating tool such as a drill, an end mill, or a tap through the turret under the control of the controller.

FIG. 5 is a conceptual diagram comparing before and after smooth finishing according to an embodiment of the present invention. FIG. 5 (a) shows the shape of the input 3D modeling data (outline 171 of the 3D design) (b) shows the process of stacking the printed sculptures PO and the outline 171 of the 3D design, (c) shows the process of finishing the surface of the printed sculpture PO by the machining tool part 140 smoothly Respectively.

More specifically, a surface of the surface of the printed molding object PO protruding from the outline 171 of the 3D design is processed through the processing tool portion 140, and may be processed into an outline shape as shown in (a) only a predetermined amount of protruding portions as shown in FIG.

For example, when high precision is required, the printed molding objects PO as shown in (b) may be made larger than the outline 171 of the 3D design by a predetermined thickness when stacking the printed molding objects PO, This is to prevent the surface from being bent due to the groove 171b generated in the laminating process.

In addition, the control unit 160 controls the machining tool unit 140 so as to more smoothly (smoothly) process the sharp portion and roughness having a predetermined angle or less in the outline 171 of the 3D design for educational purposes, This is to ensure that children with weak skin are not injured by sharp edges or rough surfaces.

Further, the size of the stacked printed molding objects PO, which further includes a 3D scanner or a laser, is directly measured to compare the projection amount of the surface with the 3D design data 170 through the control unit 160, It may be machined through the machining tool part 140.

The 3D printer having the finishing tool portion having the features as described above may further include some or all of the configurations as in the following Embodiments 2 to 7 including the first preferred embodiment, And Examples 2 to 7 are as follows.

6 shows a method of dividing 3D design data 170 according to a second embodiment of a 3D printer having a finishing tool according to the present invention. In the first embodiment, the controller 160 in the first embodiment has a predetermined thickness In addition to the method of dividing the 3D design data 170 into a plurality of horizontal layers, the 3D design data 170 may be divided into a horizontal portion, a vertical portion, a straight line (diagonal line) portion having a predetermined angle, The data 170 may be further divided.

An extruder for stacking the laminated materials according to a straight portion (diagonal portion) and a curved portion having a horizontal portion, a vertical portion, a predetermined angle, of the 3D design data 170 divided by the controller 160 is controlled Or vertically, with a straight line (diagonal line) having a predetermined angle, or along a curved line so as to have higher quality and higher productivity by rotating the plane of the stacking workbench where the lamination material is stacked The optimum transport path is calculated, and the extruder, the stacking workbench, the plane, the machining tool, and the like are controlled.

That is, the control unit 160 controls the 3D design data 170 or each of the divided horizontal 3D design data (sectional shape data) without calculating the moving path along the 3D design data 170 or each divided horizontal layer 3D design data The 3D 3D design data (cross-sectional shape data) is divided into a horizontal portion, a vertical portion, a straight line (diagonal line) portion having a predetermined angle, and a curved portion to calculate a movement path, and control operations along the calculated movement path There are features.

7 is a view showing a laminate of a laminated material according to a second embodiment of a 3D printer having a finishing tool according to the present invention. Horizontal layer 3D design data (sectional shape data) as shown in (a) (B) in the laminating method according to Example 1, and laminated in the same manner as in (c) in the laminating method according to the second embodiment.

In addition, the horizontal layer 3D design data (sectional shape data) as shown in (d) is laminated in the form of (e) in the lamination method according to the first embodiment, and in the lamination method according to the second embodiment f).

More specifically, when the length of the horizontal portion 170a of the horizontal layer 3D design data (cross-sectional shape data) is longer than the length of the vertical portion 170b as shown in (a) The laminated material is laminated as shown in (c).

As another example, if the horizontal layer 3D design data (cross-sectional shape data) is diagonally shaped as shown in (d), it is stacked in a diagonal direction as shown in (f).

(C) and (f) constituting the surface appearance of the laminate in the longitudinal direction according to the above-described Embodiment 2 can be made to have a more beautiful appearance than the case of (b) and (e) .

8 or 9 shows a tilt of a stacking and stacking workbench of a laminate material according to Embodiment 3 of a 3D printer provided with a finishing tool portion according to the present invention and shows the outline of a 3D design as shown in FIG. In the case of stacking the lamination materials through the 3D design data having the plan views as shown in (171) and (b), when the laminate material has the longitudinal outer shape of the upper and lower diagonal lines as in 171a, The laminated material can be laminated in the longitudinal direction of the diagonal line as in (d) according to the third embodiment. Thus, the laminated material can be laminated so as to have a more beautiful appearance as in the second embodiment.

In order to stack in the above-described manner, the extruder is transported in the X-axis direction and the Y-axis or Z-axis direction in the X-axis direction by the movement path as in 171b of Embodiment 1. In the case of Embodiment 3, The laminate material is laminated after tilting (tilting) the plane 122 of the stacking workbench where the printed molding objects PO are stacked.

The plane 122 of the above-described stacking workbench can be rotated (b) about the Y axis as well as the rotation (a) about the Z axis described in Embodiment 1, and the Y axis rotation (b) It is preferable that the rotation stepper motor (not shown) rotates at a predetermined angle under the control of the control unit.

When the plane 122 of the stacking workbench can be rotated and tilted as described above, the control unit controls the amount of rotation of the Y-axis rotating stepper motor (not shown) or the inclination angle of the plane 122 of the stacking workbench PO) and the center axis c of the plane 122 of the inclined stacking workbench.

In the third embodiment, the laminate material 122 is horizontally laminated on one side of the printed molding material PO tilted through the inclination of the plane 122 as described above to form a shape as shown in Figs. 7 (a) and 7 (d) .

10 is a block diagram according to Embodiment 4 of a 3D printer equipped with a finishing tool according to the present invention. Unlike the embodiment 1, the plane 122 of the stacking workbench where the print workpieces PO are stacked is Y And the extruder 130 for stacking the lamination material 122 may be a form capable of only the Z-axis and X-axis feed.

More specifically, the Z-axis of the extruder 130 for laminating the lamination material 122 is conveyed to the upper portion of the plane 122 of the stacking workbench through the combination of the X-axis conveyance and the Y-axis conveyance of the plane 122 of the stacking workbench The Y-axis transfer of the plane 122 of the stacking workbench is performed by using the same stepper motor and LM guide (Linear Motion Guide) as the X-axis and Y- And the Y axis transport direction of the extruder 130 according to the first embodiment is made in the opposite direction (-Y axis direction) when the plane 122 of the stacking workbench is transported.

The fourth embodiment may further include the machining tool part 140 of the first embodiment and the machining tool part 140 may have the same structure as that of the first embodiment except that the extruder 130 and the machining tool part 140 are the same X-axis transfer lines can be shared.

11 shows a plane 122 of a stacking workbench according to Embodiment 5 of a 3D printer provided with a finishing tool portion according to the present invention and Example 5 shows a plane 122 of the stacking workbench according to Embodiment 3 And the Y-axis transfer of the plane 122 of the stacking workbench of the fourth embodiment.

More specifically, in the 3D printer provided with the finishing tool portion according to the fifth embodiment, the plane 122 of the stacking workbench can be rotated (b) not only in the rotation (a) but also in the Y axis , The plane 122 of the stacking workbench is capable of Y-axis feed along the Y-axis feed line 152 as in the fourth embodiment.

As described above, the plane 122 of the stacking workbench according to the fifth embodiment can rotate (b) and Y-axis about the Y-axis as well as the rotation (a) about the Z- The Y-axis rotation b is performed as the Y-axis rotation stepper motor (not shown) rotates at a predetermined angle under the control of the control unit, and the Y-axis rotation is performed by the Y-axis transfer stepper motor As shown in FIG.

12 shows an extruder according to Embodiment 6 of a 3D printer provided with a finishing tool portion according to the present invention. Unlike Embodiment 1 in which a laminate material storage container 120 is separately provided, a laminate material storage container 120) may be integrally formed with the extruder.

More specifically, the extruder according to the sixth embodiment includes a plurality of stacked material receiving containers (not shown) for receiving the laminated material 122 in close proximity to the above-described laminated workbench 110 120 are integrally formed with an extruder 130 for injecting the laminated material 122 and fill the interior of the cylinder 200 with the laminated material 122 to be used through the inlet 201.

The laminated material 122 filled in the cylinder 200 is discharged and stacked through the extruder tip portion 138 provided at the end of the cylinder 200 by the pressurization by the pressing means 202.

In addition, any one of the cylinder 200 and the extruder tip portion 138 may further include a heating unit (not shown), so that the laminated material 122 filled in the cylinder 200 is heated and melted .

Also, the pressing means 202 may be configured in the form of a piston which is pressed by a general upward / downward motion as in (a) under the control of the control section, or may be pressurized It is most preferable that the shape of the piston using the screw coupling as shown in (b) is capable of more precisely controlling the upward / downward movement of the pressing means for pressing the laminated material 122 .

When the laminated material storage type extruder as described above is used, the material does not leak due to the fixed pressure of the inside of the closed cylinder when the movement of the pressing means is stopped as shown in (c) It is possible to precisely spray the material, so that it is possible to stack the print molding of higher quality.

13 is a block diagram according to Embodiment 7 of a 3D printer provided with a finishing tool according to the present invention. A 3D printer having a finishing tool according to Embodiment 7 is provided with a grip portion 211 It is possible to selectively grasp the extruder 130 or the machining tool 140 located in the turret (automatic tool change 210).

More specifically, the gripping section 211 is capable of gripping the extruder 130 and the machining tool section 140 by using a chuck (tool chuck) which can feed the X axis, the Y axis, and the Z axis, And the extruder 130 and the machining tool part 140 are located in the turret 210.

The rotation amount of the turret 210 is controlled by a stepper motor that can be rotated (C) under the control of the controller 160.

The gripper 211 is moved to the upper portion of the turret 210 under the control of the controller 130. The turret 210 is controlled by the control unit 130 and the lower portion of the gripper 211, And the laminate material 122 is stacked on the plane 122 of the stacking workbench after the gripper 211 grasps the extruder 130. In this case,

After the stacking is completed, the gripper 211 moves to the upper portion of the turret 210 under the control of the controller 130 to place the extruder 130 on the turret 210, The grip portion 211 is rotated to grip the machining tool portion 140 and the grip portion 211 grasps the machining tool portion 140 and processes the surface of the print machining object PO.

The turret 210 may include a plurality of extruders having different nozzle sizes or a plurality of machining tool portions having other machining tools such as drills, taps, saw blades, etc., as well as the extruder 130 and the machining tool 140 The grip portion 211 may be configured to selectively grasp the laminated material 122 in accordance with the use according to the control of the controller 160 so that the laminated material 122 and the surface of the printed molding PO can be processed.

Various modifications of the technical features included in the first to seventh embodiments as well as the first to seventh embodiments are possible.

For example, when Embodiment 4 and Embodiment 6 are combined, the plane (122 in FIG. 10) of the stacking workbench where the print molding objects (PO) are stacked is capable of Y-axis transfer, And an extruder (Fig. 12) can be configured as a 3D printer capable of being transported in the Z axis and the X axis.

As another example, when the sixth embodiment and the seventh embodiment are combined, a plurality of stacked material storage type extruders and a processing tool part are located in the turret, and a plurality of stacked material storage types The surface of the print molding workpiece PO is processed while selectively grasping or replacing any one of a plurality of processing tool parts located in the turret after laminating the print molding objects PO while selectively grasping or replacing any one of the extruders.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art without departing from the scope of the present invention. The scope of the invention should therefore be construed in light of the claims set forth to cover many of such variations.

PO: Printed sculpture
100: 3D printer 110: Lamination workbench
112: vertical rotation part 114: plane
116: work space part 118: temperature control part
120: laminated material storage container 122: laminated material
130: extruder 132: extruded stem part
134: laminated material extrusion motor 136:
138: extrusion tip
140: machining tool part 142: tool stand
144: tool rotation motor 146: horizontal rotation axis
148: Grinding tool 150: Position shifting part
X, Y, Z1, Z2, B: (multi-axis drive) Stepper motor
160: control unit 170: 3D design data
171: Outline of 3D design
200: cylinder 201: inlet
202:
210: Turret
211:

Claims (7)

A 3D printer for laminating a print molding using a thermoplastic laminated material,
A controller for receiving 3D design data and dividing the 3D design data into a plurality of horizontal layers;
An extruder for stacking the thermoplastic laminated material in the shape of the 3D design data divided according to the command of the controller;
A stacking worktable on which a print molding formed by stacking a stacking material by the extruder is seated;
A processing tool portion for finishing the surface of the print molding that is seated on the upper surface of the stacking workbench;
And a position shifting unit for shifting the extruder and the processing tool unit in the multi-axis direction (X, Y, Z) from the upper part of the stacking workbench under the control of the control unit
A 3D printer equipped with a finishing tool part.
The method according to claim 1,
The extruder includes an extrusion stem portion driven in three axial directions (X, Y1, Z1);
A laminated material extrusion motor coupled to the extruded stem portion;
A heating unit for melting the laminated material supplied by the laminated material extrusion motor;
And an extruded tip portion for extruding the molten laminated material by the heat generating portion
A 3D printer equipped with a finishing tool part.
The method according to claim 1,
Wherein the machining tool section is driven in three axial directions (X, Y2, Z2);
A tool rotation motor coupled to a lower end of the tool rest;
A horizontal rotation shaft coupled to a rotation axis of the tool rotation motor;
And a grinding tool coupled to the tip portion of the horizontal rotary shaft for grinding the surface of the print molding
A 3D printer equipped with a finishing tool part.
The method according to claim 1,
Wherein the stacking workbench includes a plane surface rotatable on an upper surface thereof;
And a vertical rotation unit including a motor for horizontally rotating the plane about a central axis perpendicular to the plane
A 3D printer equipped with a finishing tool part.
The method according to claim 1,
Wherein the position shifting unit includes a plurality of stepper motors for individually feeding the extruder and the machining tool unit in the X axis, the Y axis, and the Z axis
A 3D printer equipped with a finishing tool part.
The method according to claim 1,
And a temperature control unit for heating or cooling the temperature of the work space between the stacking workbench and the position shifting unit
A 3D printer equipped with a finishing tool part.
The method according to claim 1,
Further comprising a conveying conveyor for conveying the print molding, which is laminated and formed on the upper surface of the stacking workbench, to the outside of the work space
A 3D printer equipped with a finishing tool part.

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