KR102291768B1 - 3d printing equipment - Google Patents

Abstract

The present invention provides a mixing heating unit that heats while dispersing a light-curable liquid material filled in a bottle-shaped container; A 3D printer that receives a photo-curable liquid material from the container to the water tank and irradiates light to the photo-curable liquid material in the water tank to output a three-dimensional molded product from the water tank; and a mixing heating unit and a 3D printing device including a controller electrically connected to the 3D printer.

Description

3D Printing Equipment {3D PRINTING EQUIPMENT}

The present invention relates to a 3D printing apparatus that facilitates a 3D printing operation by dispersing and heating a photocurable liquid material filled in a bottle-shaped container before the 3D printing operation.

In general, a 3D printer refers to an apparatus for manufacturing a three-dimensional molded product by using additive manufacturing technology (AMT), out of methods such as milling, cutting, and assembling. Here, the three-dimensional molded article is formed by repeatedly irradiating a laser or ultraviolet light to the photocurable liquid material in a water tank in a 3D printer and curing the photocurable liquid material for each light irradiation.

In addition, the photocurable liquid material includes a photoinitiator and is a resin that reacts with light when irradiated with laser light or ultraviolet light to cause a phase change to a solid state. Therefore, even if the 3D printer is installed in a narrow space outside of the existing manufacturing line, it is suitable for small quantity production of various kinds based on various additive manufacturing technology and can be customized, so it is attracting attention for its usefulness in the medical field.

However, since the photocurable liquid material is made by mixing a resin, a photoinitiator, and a pigment, etc., and then filled in a bottle-shaped container and sold for a long time, when stored for a long time in the vicinity of a 3D printer or in a storage warehouse, the difference in specific gravity between the resin, the photoinitiator, and the pigment Due to the natural separation of the resin, photoinitiator and pigment inside the container.

The separated resin, photoinitiator, and pigment must be mixed before being supplied to the water tank during 3D printing and react with light in the water tank to form a three-dimensional molded product, but when not mixed during 3D printing, it is individually applied to the three-dimensional molding The external aesthetics of the three-dimensional molded object are lowered incompatible with the initial design purpose of the three-dimensional molding.

In order to prevent the natural separation of the contents of the photocurable liquid material, the prior art provides a mixing tool for dispersing the photocurable liquid material in the container provided around the 3D printer and a heating tool provided in the 3D printer to heat the photocurable liquid material in the container. start

Here, the mixing tool and the heating tool require separate power consumption inside and outside the 3D printer during 3D printing and require a lot of time to disperse and heat the photocurable liquid material in the container. On the other hand, the 3D printer is similarly disclosed as a prior art in Korean Patent Application Laid-Open No. 10-2019-0030327 and Korean Patent Publication No. 10-1966829.

Korean Patent Publication No. 10-2019-0030327 Korean Patent Publication No. 10-1966829

The present invention has been devised to solve the problems of the prior art, and in order to facilitate the 3D printing operation, the 3D suitable for reducing the work flow for the dispersion and heating of the photocurable liquid material filled in the bottle-shaped container and minimizing the power consumption An object of the present invention is to provide a printing device.

A 3D printing apparatus according to the present invention includes: a mixing heating unit for heating while dispersing a light-curable liquid material filled in a bottle-shaped container; a 3D printer receiving the photocurable liquid material from the container to the water tank and irradiating light to the photocurable liquid material in the water tank to output a three-dimensional molded product from the water tank; and a controller electrically connected to the mixing heating unit and the 3D printer, wherein the controller receives power from the outside for a 3D printing operation to electrically control at least one of the mixing heating unit and the 3D printer characterized in that

The mixing heating unit may include a rotation motor for rotating the container; a rotating barrel for inserting the rotating shaft of the rotating motor from one closing part to rotationally fixing the rotating shaft to the one side closing part and accommodating the vessel at the other opening part to surround the vessel in a cylindrical shape; And it may include permanent magnets located on both sides of the rotating barrel.

The rotary motor may include a microcomputer that stores the number of rotations and the heating temperature of the rotary cylinder according to the diameter of the container.

The rotary tube, the inner passage and outer tube forming a concentric circle; Between the inner tube and the outer tube, along the curvature of the inner tube or the outer tube, with a plurality of heating layers located in the central region of the inner tube or the outer tube, located in both edge regions of the inner tube or the outer tube a conductive band electrically connected to the plurality of heating layers; And it is located on the outer tube may include an induced electromotive force line that crosses or parallels the magnetic force lines of the permanent magnet during the rotation of the rotating tube.

The inner tube and the outer tube may pass through the magnetic force lines of the permanent magnet, and the inner tube may surround the bottle body in the container and expose the bottle cap to the outside of the inner tube.

When the induced electromotive force line has one guide line on the outer tube and repeatedly extends the guide line in a 'ㄹ' shape along the longitudinal direction of the outer tube, the guide line is, the inner tube or the outer tube a first connecting line connected to a conductive strip located in an edge region of the barrel; And it may include a second connecting line connected to the conductive band located in the other edge region of the inner tube or the outer tube.

The induced electromotive force line has two guide lines on the outer tube and repeats in a 'L' shape along the longitudinal direction of the outer tube to extend the individual guide lines, and closes the two guide lines on the outer circumferential surface of the outer tube. When connecting to, the two guide lines, a first connecting line connected to a conductive band located in one edge region of the inner tube or the outer tube; And it may include a second connecting line connected to the conductive band located in the other edge region of the inner tube or the outer tube.

The induced electromotive force line has two guide wires on the outer tube and repeats in a 'L' shape along the longitudinal direction of the outer tube to extend the individual guide wires, and connect the two guide wires to each other on the outer circumferential surface of the outer tube. spaced apart from each other, and the plurality of heating layers are divided into a first heating layer group and a second heating layer group that are electrically isolated from each other, and the conductive strip is located at one edge region of the inner tube or the outer tube, A first conductive band and a second conductive band connected to the first heating layer group and the second heating layer group, and the other edge region of the inner tube or the outer tube, the first heating layer group and the first heating layer group When it has a third conductive band and a fourth conductive band connected to the second heating layer group, the guide line includes the first conductive band and the second conductive band located in the one edge region of the inner tube or the outer tube. a first connecting line connected to the band and a second connecting line; and a third connecting line and a fourth connecting line connected to the third conductive band and the fourth conductive band located in the other edge region of the inner tube or the outer tube.

The induced electromotive force line is on the rotating cylinder through a change in the number of lines of magnetic force of the permanent magnet that intersects the occupied area of the individual 'c' shape in the 'd' shape when the rotating cylinder is rotated between the two permanent magnets. Forming an induced current, the heating layer may be supplied with the induced current from the induced electromotive force line to generate heat.

The guide wire may be fixed to the outer circumferential surface of the outer tube through an adhesive.

The permanent magnet, when viewed from the outer circumferential surface of the rotary tube, along the convex curve of the rotary tube, has a concave curve toward the outer circumferential surface of the rotary tube or may have a flat shape toward the outer circumferential surface of the rotary tube .

The 3D printer, SLA (stereolithography apparatus) method or DLP (digital light processing) method to the body portion for irradiating the light to the tank; The water tank and the actuator spaced apart from each other on the body portion; and a connecting rod and an output plate that are sequentially arranged from the actuator toward the water tank and move up and down relative to the actuator.

The output plate may separate the three-dimensional molded article from the water tank by attaching the three-dimensional molded article to a surface facing the photocurable liquid material while in contact with the photocurable liquid material when the light is repeatedly irradiated to the water tank. .

The controller may be electrically connected to the rotating motor in the mixing heating unit, and the body and the actuator in the 3D printer.

The 3D printing apparatus according to the present invention is provided with a mixing heating unit around the 3D printer in order to facilitate the 3D printing operation, and a rotating barrel having an induced electromotive force line between two permanent magnets in the mixing heating unit is positioned and rotated The bottle-shaped container is forcibly inserted into the barrel, and the rotating barrel and the container are rotated using a rotating motor to disperse the photocurable liquid material in the container, and the induced electromotive force lines of the rotating barrel and the magnetic force lines of the permanent magnet are separated during the rotation of the rotating barrel. It crosses to generate an induced current in the induced electromotive force line, and uses the induced current of the induced electromotive force line to heat the container by heating a plurality of heating layers in the rotating barrel. can be reduced and power consumption can be minimized.

The 3D printing apparatus according to the present invention includes a mixing heating unit, a 3D printer, and a controller in order to facilitate a 3D printing operation, and at least one of a mixing heating unit and a 3D printer by receiving power from the outside during a 3D printing operation in the controller electric control, dispersing and heating the photocurable liquid material in the container using a rotating barrel in the mixing and heating unit, and photocurable liquid material in a water tank regardless of the seasons without using a heating tool during 3D printing in 3D printer Since it is possible to output a three-dimensional molded product by preventing the solidification of the material, it is possible to reduce the work flow for dispersion and heating of the photocurable liquid material filled in the container, and to minimize power consumption.

1 is a schematic diagram showing a 3D printing apparatus according to the present invention.
FIG. 2 is a perspective view showing a mixing heating unit in the 3D printing apparatus of FIG. 1 .
3 is a perspective view showing the intersection of the magnetic force lines of the permanent magnet and the induced electromotive force lines of the rotating barrel in the mixing heating unit of FIG. 2 .
4 is a perspective view showing the rotary tube of FIG. 3 partially cut away.
FIG. 5 is a schematic diagram showing a first modified example of the induced electromotive force line of FIG. 3 .
FIG. 6 is a schematic diagram showing a second modified example of the induced electromotive force line of FIG. 3 .
7 and 8 are schematic diagrams illustrating a method of using the 3D printing apparatus of FIG. 1 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention set forth below refers to the accompanying drawings, which show by way of illustration specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. In the drawings, like reference numerals refer to the same or similar functions in various aspects, and the length, area, thickness, and the like may be exaggerated for convenience.

Hereinafter, in order to enable those of ordinary skill in the art to easily practice the present invention, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram showing a 3D printing apparatus according to the present invention, FIG. 2 is a perspective view showing a mixing heating unit in the 3D printing apparatus of FIG. 1, and FIG. 3 is a magnetic force line and rotation of a permanent magnet in the mixing heating unit of FIG. It is a perspective view showing the crossing state of the induced electromotive force lines of the barrel.

In addition, FIG. 4 is a perspective view showing the rotary tube of FIG. 3 partially cut away, FIG. 5 is a schematic diagram showing a first modified example of the induced electromotive force line of FIG. 3, and FIG. 6 is an induced electromotive force line of FIG. It is a schematic diagram showing a second modified example.

1 to 6 , the 3D printing apparatus 190 according to the present invention includes a mixing heating unit 110 , a 3D printer 170 , and a controller 180 . When viewed schematically, the mixing heating unit 110 heats while dispersing the light-curable liquid material filled in a bottle-shaped container ( 210 in FIG. 7 ).

The 3D printer 170 receives the photocurable liquid material from the container 210 to the water tank 130 and irradiates light to the photocurable liquid material of the water tank 130 to output a three-dimensional molded product from the water tank 130 . The controller 180 is electrically connected to the mixing heating unit 110 and the 3D printer 170 .

Here, the controller 180 electrically controls at least one of the mixing heating unit 110 and the 3D printer 170 by receiving power from the outside for the 3D printing operation. When looking in more detail, the mixing heating unit 110, includes a rotary motor 8, a rotary barrel 93, and permanent magnets 104, 108, as shown in FIG.

The rotary motor 8 rotates (R) the rotary cylinder 93 and the container 210 . The rotary cylinder 93 is formed by inserting the rotary shaft 4 of the rotary motor 8 from the one-side closure part (50 in FIG. 4) to rotate and fix the rotary shaft 4 to the one-side closure part 50, and the container 210 ) is received in the other opening (G in FIG. 2) to surround the container 210 in a cylindrical shape. The permanent magnets 104 and 108 are located on both sides of the rotating barrel 93 .

Here, the rotary cylinder 93 heats the container 210 through the rotation R of the rotary cylinder 93 . The rotation motor 20 includes a microcomputer that stores the number of rotations and the heating temperature of the rotation tube 93 according to the diameter of the container 210 . The rotary tube 93 is, as shown in FIGS. 3 and 4, an inner tube 10, a plurality of heating layers 20, a conductive strip 30, an outer tube 40, and an induction It includes an electromotive force line 83 .

The inner cylinder 10 and the outer cylinder 40 form a concentric circle between the permanent magnets 104 and 108 as shown in FIG. 3 . The plurality of heating layers 20 are formed between the inner tube 10 and the outer tube 40 along the curve of the inner tube 10 or the outer tube 40 , the inner tube 10 or the outer tube 40 . is located in the central area of

The conductive strip 30 is, between the inner tube 10 and the outer tube 40, along the curve of the inner tube 10 or the outer tube 40, the amount of the inner tube 10 or the outer tube 40 It is located in the edge region and is electrically connected to the plurality of heating layers 20 . The induced electromotive force line 83 is located on the outer cylinder 40 and crosses or parallels the magnetic force lines B of the permanent magnets 104 and 108 when the rotating cylinder 93 rotates.

The inner cylinder 10 and the outer cylinder 40 pass the magnetic force lines B of the permanent magnets 104 and 108 . As shown in FIG. 8 , the inner barrel 10 surrounds the bottle body 204 in the container 210 and exposes the bottle cap 208 to the outside of the inner barrel 10 . The induced electromotive force line 83 has one guiding wire 61 on the outer tube 40 as shown in FIG. 3 and repeats the 'D' shape along the longitudinal direction of the outer tube 40 to induce the guiding wire 61. When extending, the guide line 61 includes a first connecting line 71 and a second connecting line 72 .

Here, the first connecting line 71 is connected to the conductive strip 30 positioned at one edge of the inner tube 10 or the outer tube 40 . The second connecting line 72 is connected to the conductive strip 30 located in the other edge region of the inner tube 10 or the outer tube 40 . Alternatively, the induced electromotive force line 86 of FIG. 5 is a first modification of the induced electromotive force line 83 of FIG. 3 and is described as follows.

The induced electromotive force line 86 has two guide wires 63 and 65 on the outer tube 40 and repeats in a 'L' shape along the longitudinal direction of the outer tube 40 to form individual guide wires 63 or 65 ) and connecting the two guide lines 63 and 65 on the outer circumferential surface of the outer tube 40 in a closed curve, the two guide lines 63 and 65 are, the first connecting line 73 and the second connecting line (75). The first connecting line 73 is connected to the conductive strip 30 positioned at one edge of the inner tube 10 or the outer tube 40 .

The second connecting line 75 is connected to the conductive strip 30 positioned at the other edge region of the inner tube 10 or the outer tube 40 . Here, the two guide wires 63 , 65 are electrically connected to each other between the inner tube 10 and the outer tube 40 . The inner tube (10 in FIG. 4), a plurality of heating layers (20 in FIG. 4), the conductive strip 30, the outer tube 40, and the induced electromotive force line 86 are the rotary tube 96. make up Similarly, the induced electromotive force line 89 in FIG. 6 is a second variant of the induced electromotive force line 83 in FIG. 3 and is described below.

That is, the induced electromotive force line 89 has two guide wires 67 and 69 on the outer tube 40 and repeats in a 'L' shape along the longitudinal direction of the outer tube 40 to form individual guide wires 67 or 69) and when the two guide wires 67 and 69 are spaced apart from each other on the outer circumferential surface of the outer tube 40, the plurality of heating layers 20 of 4 are also electrically isolated from each other. It is divided into a layer group and a second heating layer group (not shown in the drawing).

In addition, the conductive strip (30 in FIG. 4) is located in one edge region of the inner tube 10 or the outer tube 40, the first conductive strip connected to the first heating layer group and the second heating layer group; A second conductive strip (not shown in the drawing), and a third conductive strip and a third conductive strip located in the other edge region of the inner tube 10 or the outer tube 40 and connected to the first heating layer group and the second heating layer group 4 It has a conductive strip (not shown in the drawing).

The two guide lines 67 and 69 are a first connecting line 76 and a second connecting line connected to a first conductive band and a second conductive band positioned at one edge of the inner tube 10 or the outer tube 40 . a connecting line 78 , and a third connecting line 77 and a fourth connecting line 79 connected to the third and fourth conducting strips positioned in the other edge region of the inner tube 10 or the outer tube 40 . do.

Here, the two guide wires 67 , 69 are electrically isolated from each other between the inner tube 10 and the outer tube 40 . The inner tube (10 in FIG. 4 ), the first and second heating layer groups, the first to fourth conductive strips, the outer tube 40 , and the induced electromotive force line 89 connect the rotary tube 99 . make up

The induced electromotive force line (83 in Fig. 3 or 86 in Fig. 5 or 89 in Fig. 6) is in the 'D' shape when the rotating cylinder 93 or 96 or 99 is rotated between the two permanent magnets 104 and 108. The induced current (i1 or i1 in FIG. 3 or i2 in FIG. 5 or i3 & i4 in FIG. 6) are formed.

The plurality of heating layers 30 in FIG. 4 or the plurality of heating layers 30 in FIG. 5 or the first and second heating layer groups in FIG. 6 are induced current i1 from the induced electromotive force line 83 or 86 or 89 or i2 or i3 & i4) are supplied and heat is generated. The guide wires (61 in FIG. 3 or 63 & 65 in FIG. 5 or 67 & 69 in FIG. 6) are fixed to the outer peripheral surface of the outer cylinder 40 through an adhesive.

The permanent magnets 104 and 108 follow the convex curvature of the rotating barrel 93 or 96 or 99 when viewed from the outer peripheral surface of the rotating barrel 93 or 96 or 99. It may have a concave curve toward the outer circumferential surface or may have a flat shape toward the outer circumferential surface of the rotary cylinder (93 or 96 or 99).

Meanwhile, the 3D printer 170 includes a body portion 120 , a water tank 130 , an actuator 140 , a connecting rod 150 , and an output plate 160 . The body 120 irradiates light to the water tank 130 by a stereolithography apparatus (SLA) method or a digital light processing (DLP) method. The water tank 130 and the actuator 140 are spaced apart from each other on the body portion 120 .

The water tank 130 contains a photocurable liquid material. The connecting rod 150 and the output plate 160 are sequentially arranged from the actuator 140 toward the water tank 130 to relatively move up and down (D) with respect to the actuator 140 . The output plate 160 separates the three-dimensional molded article from the water tank 130 by attaching the three-dimensional molded article to the surface facing the photocurable liquid material while in contact with the photocurable liquid material when the water tank 130 is repeatedly irradiated with light. .

The controller 180 is electrically connected to the rotation motor 8 in the mixing heating unit 110 , and the light irradiation unit of the body 120 and the motor unit of the actuator 140 in the 3D printer 170 .

7 and 8 are schematic diagrams illustrating a method of using the 3D printing apparatus of FIG. 1 . Here, FIGS. 7 and 8 will be described with reference to FIGS. 1 to 4 .

7 and 8 , the 3D printing apparatus 190 may be prepared as shown in FIG. 1 . The 3D printing apparatus 190 includes a mixing heating unit 110 , a 3D printer 170 , and a controller 180 . The mixing heating unit 110 , the 3D printer 170 , and the controller 180 have been sufficiently described with reference to FIGS. 1 to 4 .

Next, external power may be applied to the controller 180 of the 3D printing apparatus 190 . The controller 180 may electrically control at least one of the mixing heating unit 110 and the 3D printer 170 for a 3D printing operation. To simplify the present invention, it is assumed that the controller 180 sequentially operates the mixing heating unit 110 and the 3D printer 170 .

Here, the mixing and heating unit 110 has two permanent magnets 104 and 108 on both sides of the rotating tub 93 together with the rotating motor 8 and the rotating tub 93 that are sequentially arranged. Next, a bottle-shaped container 210 may be prepared. The container 210 includes a bottle body 204 filled with a photocurable liquid material and a bottle cap 208 that shields the bottle body 204 from the outside.

Subsequently, the container 210 may be inserted into the mixing heating unit 110 . More specifically, in the mixing and heating unit 110 , the bottle body 204 of the container 210 may be forcibly inserted into the rotating barrel 93 . Subsequently, to rotate the rotating barrel 93 , the rotating motor 8 may be driven using the controller 180 .

The rotary motor 8 rotates the rotary barrel 93 and the container 210 at the same time using the rotary shaft 4 which is rotationally fixed to the rotary barrel 93 . During the rotation of the rotary barrel 93, the induced electromotive force line 83 of the rotary barrel 93 reacts with the magnetic force lines B of the permanent magnets 104 and 108 to generate an induced current i1 in the induction wire 61. ) is generated.

The induced current i1 flows to the plurality of heating layers 20 via the first connecting line 71 and the conductive band 30 or the second connecting line 72 and the conductive band 30 . The plurality of heating layers 20 are supplied with the induced current i1 to generate heat to heat the container 210 . Here, the container 210 disperses the photocurable liquid material through the rotation of the rotating barrel 93 and heats the photocurable liquid material through the heat of the heating layer 20 .

Subsequently, the container 210 may be separated from the mixing heating unit 110 . After the bottle cap 208 is separated from the bottle body 204 of the container 210 , the photocurable liquid material may be supplied from the bottle body 204 to the water tank 130 . Thereafter, the 3D printer 170 may be driven using the controller 180 .

The 3D printer 130 may irradiate light to the water tank 130 using the light irradiation unit of the body portion 120 . While the light irradiation unit repeatedly irradiates light to the water tank 130 , the output plate 160 moves up and down along the actuator 140 through the connecting rod 150 while performing a vertical movement (D) of the water tank 130 . The three-dimensional molding is outputted from the water tank 130 by contacting the photocurable liquid material.

4; axis of rotation, 8; rotation motor
93; Rotating kegs, 104 &108; permanent magnet
110; mixing heating unit, G; opening
R; rotation

Claims (14)

a mixing heating unit that heats while dispersing the light-curable liquid material filled in the bottle-shaped container;
a 3D printer receiving the photocurable liquid material from the container to the water tank and irradiating light to the photocurable liquid material in the water tank to output a three-dimensional molded product from the water tank; and
A controller electrically connected to the mixing heating unit and the 3D printer,
The controller is
Electrically controlling at least one of the mixing heating unit and the 3D printer by receiving power from the outside for a 3D printing operation,
The mixing heating unit,
a rotation motor for rotating the container;
a rotary cylinder which inserts the rotary shaft of the rotary motor from one closure part to rotationally fix the rotation shaft to the one side closure part and accommodates the container in the other opening part to surround the container in a cylindrical shape; and
Permanent magnets located on both sides of the rotating barrel,
The rotating barrel,
an inner tube and an outer tube forming a concentric circle;
Between the inner tube and the outer tube, along the curvature of the inner tube or the outer tube, with a plurality of heating layers located in the central region of the inner tube or the outer tube, located in both edge regions of the inner tube or the outer tube a conductive strip electrically connected to the plurality of heating layers; and
Including an induced electromotive force line that is located on the outer cylinder and crosses or parallel to the magnetic force lines of the permanent magnet during the rotation of the rotating cylinder.
delete According to claim 1,
The rotary motor is
A 3D printing device comprising a microcomputer that stores the number of rotations and the heating temperature of the rotary barrel according to the diameter of the container.
delete According to claim 1,
The inner passage and the outer tube,
passing the lines of magnetic force of the permanent magnet,
The inner barrel,
Surrounding the bottle body in the container and exposing the bottle cap to the outside of the inner barrel, 3D printing device.
According to claim 1,
When the induced electromotive force line has a single guiding line on the outer tube and repeatedly extends the guide line in a 'ㄹ' shape along the longitudinal direction of the outer tube,
The guide line is
a first connecting line connected to a conductive band located in an edge region of the inner tube or the outer tube; and
A 3D printing apparatus comprising a second connecting line connected to a conductive strip located in the other edge region of the inner tube or the outer tube.
According to claim 1,
The induced electromotive force line has two guide wires on the outer tube and repeats in a 'ㄹ' shape along the longitudinal direction of the outer tube to extend the individual guide lines, and closes the two guide lines on the outer circumferential surface of the outer tube. When connecting with
The two guide lines are
a first connecting line connected to a conductive band located in an edge region of the inner tube or the outer tube; and
A 3D printing apparatus comprising a second connecting line connected to a conductive strip located in the other edge region of the inner tube or the outer tube.
According to claim 1,
The induced electromotive force line has two guide wires on the outer tube and repeats in a 'L' shape along the longitudinal direction of the outer tube to extend the individual guide wires, and connect the two guide wires to each other on the outer circumferential surface of the outer tube. away from it,
The plurality of heating layers are divided into a first heating layer group and a second heating layer group that are electrically isolated from each other,
The conductive strip is located at one edge region of the inner tube or the outer tube, and a first conductive strip and a second conductive strip connected to the first heating layer group and the second heating layer group, and the inner tube or When it has a third conductive band and a fourth conductive band located in the other edge region of the outer tube and connected to the first heating layer group and the second heating layer group,
The guide line is
a first connecting line and a second connecting line connected to the first conductive band and the second conductive band located in the one edge region of the inner tube or the outer tube; and
A 3D printing apparatus comprising a third connecting line and a fourth connecting line connected to the third conductive band and the fourth conductive band located in the other edge region of the inner tube or the outer tube.
9. The method according to any one of claims 6 to 8,
The induced electromotive force line is
An induced current is formed on the rotating cylinder through a change in the number of lines of magnetic force of the permanent magnet that intersects the occupied area of the individual 'c' shape in the 'ㄹ' shape when the rotating cylinder is rotated between the two permanent magnets,
the heating layer,
3D printing device, which is heated by receiving the induced current from the induced electromotive force line.
9. The method according to any one of claims 6 to 8,
The guide line is
The 3D printing device is fixed through an adhesive to the outer circumferential surface of the outer barrel.
According to claim 1,
The permanent magnet is
When viewed from the outer peripheral surface of the rotating barrel,
Along the convex curvature of the rotating barrel, having a concave curve toward the outer peripheral surface of the rotating barrel or having a flat shape toward the outer peripheral surface of the rotating barrel, 3D printing apparatus.
According to claim 1,
The 3D printer is
a body portion for irradiating the light to the water tank by a stereolithography apparatus (SLA) method or a digital light processing (DLP) method;
The water tank and the actuator spaced apart from each other on the body portion; and
A 3D printing apparatus comprising a connecting rod and an output plate that are sequentially arranged from the actuator toward the water tank and move up and down relative to the actuator.
13. The method of claim 12,
The output board is
When the light is repeatedly irradiated to the water tank,
3D printing apparatus for separating the three-dimensional molding from the water tank by attaching the three-dimensional molding to a surface facing the photocurable liquid material while in contact with the photocurable liquid material.
According to claim 1,
The controller is
A rotary motor in the mixing heating unit, and electrically connected to the body and the actuator in the 3D printer, 3D printing device.

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