KR101772997B1 - 3d printing apparatus - Google Patents

Abstract

The present invention provides a 3D printing apparatus which cures a resin by using a light source, wherein the 3D printing apparatus comprises: a molding plate which includes an attachment surface for attaching an object to be molded thereto; an accommodation unit which accommodates a resin, and includes a space allowing the object to be molded to be immersed in the resin; a lower bracket which is joined to the molding plate; an upper bracket which is joined to the lower bracket by a knob; an elevating means which is joined to the upper bracket to raise or lower the lower bracket and the molding plate together; and a grip portion which is fixed to the lower bracket.

Description

[0001] 3D PRINTING APPARATUS [0002]

The present invention relates to a 3D printing apparatus, and more particularly, to a 3D printing apparatus that is easy to maintain.

When a bone such as a skull, a cheek bone, a jaw, or a tooth is partially missing due to an accident or the like, the artificial implant made of artificial material and the support member for artificial implant are inserted into the defect.

These implants are representative of implants. Implants are replacements that restore lost tissue.

Generally, in order to manufacture an implant, a residual portion of a bone body having a defect portion is photographed by a two-dimensional CT, and a model having a shape corresponding to the remaining portion is produced based on the photographed image.

Thereafter, a clay or the like is inserted into a bone defect portion of the model to form a shape corresponding to a bone defect portion, and a bone defect portion formed with a clay or the like is treated with a resin material or the like to manufacture a female type. To make a male figure.

Thereafter, the block is processed on the basis of the block composed of the male mold and the hydroxyapatite block to produce an implant having a desired shape.

However, when the shape of the implant is complicated, it is difficult to manufacture the implant with sufficient dimensional accuracy, and in particular, when the implant has a complex shape pore, implant formation is practically impossible.

In recent years, as an alternative to overcome the above problems, there have been proposed a number of implant manufacturing apparatuses using 3D printers.

As a device for manufacturing implants using 3D printers, there are Fused Deposition Modeling (FDM), Stereo Lithography Apparatus (SLA), Digital Light Processing (DLP), Multi Jet Modeling (MJM), Selective Laser Sintering (SLS) Metal Tooling), LOM (Laminated Object Manufacturing), PolyJet (Photopolymer Jetting Technology), and 3DP (Three Dimensional Printing). Among them, the DLP method having a merit of excellent surface roughness is attracting attention.

The DLP method uses light from the light source of the projector and prints while hardening the photocurable resin. In other words, if the color filter is removed from the projector and the light is emitted, and the screen is illuminated with a sliced single-layer screen, only the portion displayed on the screen is cured with the illuminated light, . However, the DLP method requires not only replacing the photocurable resin accommodated in the water tank every time but also separating or replacing the plate. However, since the user does not have a separate member that can be held by the user during the manual replacement, There is a problem that the operation is difficult.

Japanese Unexamined Patent Publication No. 2003-052804 (Feb. 25, 2003)

Accordingly, a problem to be solved by the present invention is to provide a 3D printing apparatus which is easy to separate and mount at the time of filling or maintenance of a liquid resin.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to an aspect of the present invention, there is provided a 3D printing apparatus for curing a resin with a light source, the apparatus comprising: a molding plate having a mounting surface for mounting a molding object; A lower bracket coupled to the shaping plate, an upper bracket coupled to the lower bracket through a knob, a lower bracket coupled to the upper bracket, a lower bracket coupled to the lower bracket and the shaping plate, Up and down means for vertically moving up and down, and a grip portion fixed to the lower bracket.

The grip portion is coupled to the lower bracket with a grip portion shaft, and the grip portion shaft can be orthogonal to the body portion of the knob.

The grip portion may be installed to rotate in units of 90 degrees around the grip portion shaft.

The grip shaft may be a screw bolt having a thread on the outer circumferential surface.

At least two gripper shafts may be provided.

A non-slip member may be included on the surface of the grip portion.

The details of other embodiments are included in the detailed description and drawings.

The embodiments of the present invention have at least the following effects.

That is, in the 3D printing apparatus according to the embodiments of the present invention, the user can grip and operate the grip portion.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a perspective view showing a state in which a 3D printing apparatus according to an embodiment of the present invention is disposed in a chamber.
2 is a front view of Fig.
3 is an enlarged perspective view of a 3D printing apparatus according to an exemplary embodiment of the present invention.
Fig. 4 shows a sectional view of Fig. 3. Fig.
5 is a front view showing a state in which the grip portion of Fig. 3 is rotated.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is to be understood that the terms comprise and / or comprise are used in a generic sense to refer to the presence or addition of one or more other elements, steps, operations and / or elements other than the stated elements, steps, operations and / It is used not to exclude. And "and / or" include each and any combination of one or more of the mentioned items.

Further, the embodiments described herein will be described with reference to cross-sectional views and / or schematic drawings that are ideal illustrations of the present invention. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are generated according to the manufacturing process. In addition, in the drawings of the present invention, each component may be somewhat enlarged or reduced in view of convenience of explanation. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining a 3D printing apparatus according to embodiments of the present invention.

FIG. 1 is a perspective view showing a state in which a 3D printing apparatus according to an embodiment of the present invention is disposed in a chamber, FIG. 2 is a front view of FIG. 1, and FIG. 3 is an enlarged view of a 3D printing apparatus according to an embodiment of the present invention. Fig.

1 to 3, a 3D printing apparatus according to an embodiment of the present invention includes a molding plate 100, a lower bracket 210, an upper bracket 213, a lifting unit 220, a receiving unit 300 A grip portion 215, and a light source 10, as shown in FIG.

In this embodiment, the 3D printing apparatus may be arranged to be fixed in the chamber 1, and means that the molding object attached to the molding plate 100 by the light emitted from the light source 10 is photocured on a layer basis .

The molding plate 100 may include an attachment surface 100a parallel to the bottom portion 300b of the accommodation portion 300. [ The elevating means 220 is provided so that the molding plate 100 is driven in the vertical direction and the molding plate 100 can be connected to the elevating means 220 through the lower bracket 210 and the upper bracket 213 .

A molding object may be attached to the mounting face 100a of the molding plate 100 and may function to support the molding object when the molding object is cured into a unit molding layer in the liquid resin of the housing portion 300 have. Each time the light is irradiated from the light source 10, the unit forming layer of the molding object placed on the molding plate 100 can be stacked by using the elevating means 220. [ At this time, a separate support structure (not shown) may be formed so that the molding object can be supported by the molding plate 100.

The molding plate 100 may be engaged with the lower bracket 210. The lower bracket 210 may include a fastening member 211 disposed at at least four locations so as to stably support the molding plate 100. The fastening member 211 may be formed of various members according to methods such as bolt connection and hook fastening for joining the molding plate 100 and the lower bracket 210.

Fig. 4 shows a sectional view of Fig. 3. Fig. As shown in FIG. 4, a vertical portion 212 is formed on the upper surface of the lower bracket 210 so as to be coupled to the upper bracket 213. That is, the lower surface of the lower bracket 210 is coupled to the molding plate 100, and the upper surface of the lower bracket 210 is coupled to a vertical portion 212 that stands upright in the vertical direction, and the vertical portion 212 has a flat surface And is connected to an upper bracket 213 formed parallel to the ground. At this time, the knob 230 can be engaged with the upper bracket 213 by the coupling protrusion 232 of the knob body 231 passing through the upper bracket 213 in the thickness direction.

The upper bracket 213 is coupled to the vertical portion 212 through the knob 230 and has a coupling protrusion 232 formed at the end of the knob body 231 and has a locking protrusion (not shown) (Not shown) is formed. Here, the knob 230 rotates in a direction to be engaged or disengaged by the user, and the knob body 231 integrally formed with the knob 230 can be rotated together.

The vertical portion 212 may be provided so that the grip portion 215 is orthogonal to the knob body 231 through the grip portion shaft 216. Therefore, when the knob 230 is to be rotated, the knob 230 can be stably rotated while holding the gripper 215. In addition, a screw thread may be formed on a part of the outer circumferential surface of the grip shaft 216 so as to be screwed to the vertical portion 212. In addition, at least two gripper shafts 216 are provided so that the gripper 215 and the vertical portion 212 can be firmly coupled to each other.

The grip portion 215 is a portion that can be grasped by a user using a hand, and a non-slip portion is formed by using a method of forming a plurality of projections or attaching a non-slip pad on the surface of the grip portion 215, And can be formed into a shape having a predetermined length through an ergonomic design so that the user can grip the handle with stability.

5 is a front view showing a state in which the grip portion of Fig. 3 is rotated. As shown in FIG. 5, when one gripper shaft 216 is provided, the gripper shaft 216 may be rotated around the gripper shaft 216, for example, in units of 90 degrees. Therefore, when the user desires to move the receiving portion 300, the lower bracket 210, and the upper bracket 213 separately, the user can easily grasp various situations such as left-handed or right- Since the gripper 215 is rotated, gripping is facilitated under any circumstances.

When the grip portion 215 is formed so as to be rotatable in units of 90 degrees, protrusions are formed on the outer peripheral surface of the grip portion shaft 216 in the radial direction in units of 90 degrees, and the grip portion shaft 216 penetrates (Not shown) for providing a sense of detent to each of the protrusions is formed on the inner circumferential surface of the through hole (not shown) of the vertical portion 212. The configuration for imparting a sense of dutility using the projection is well-known, and a detailed description thereof will be omitted.

The elevating means 220 moves the molding plate 100 whenever the surface of the molding object is cured by the light irradiated from the light source 10 according to the shape of the molding object, The chemical resin can be moved in the direction of approaching or separating from the light source 10 along the height direction (z direction) of the three-dimensional structure to be printed by the user. In the present embodiment, it is defined that the shaping plate 100 is lifted up and down by the lifting means 220 in both directions along the z direction.

In the area where the photocurable resin is cured in the housing part 300, the uncured photocurable resins are refilled and then irradiated with light from the light source 10 to sequentially form a three- The chemical conversion resin can be cured.

The light source 10 irradiates light for curing the photocurable resin in the accommodating portion 300 while adjusting the irradiation range or the irradiation angle according to the shape of the molding object. In this embodiment, the light emitted from the light source 10 may be composed of ultraviolet (IR), visible light (VR), or a combination thereof.

Preferably, the light may be ultraviolet (UV) light. Since ultraviolet light has a shorter wavelength than other visible light, it is possible to apply a fine pixel by providing a phase-modulation exposure head using ultraviolet light as a light source. However, if the three-dimensional structure can be printed by curing the photocurable resin, any region of light such as electron beam (EB) or visible light can be used.

The liquid resin can be filled in the accommodating portion 300, and in particular, the photo-curing resin can be accommodated as described above, and the space in which the photo-curable resin is cured can be provided. A transparent bottom portion 300b is formed on the lower surface of the receiving portion 300 so that the light emitted from the light source 10 can pass through without interference and the bottom portion 300b is disposed in proximity to the light source 10, Thereby blocking light from entering the lower portion of the receiving portion 300.

On the other hand, the photocurable resin may be a polymer compound that converts from a monomer to a polymer structure through a crosslinking reaction when irradiated with light in the UV region. In particular, a diazo system, an azide system, an acrylic acid system, a polyester system, an epoxy system and the like can be used, and those having physical properties corresponding to the required strength of the stereolithography can be selected. In the case of forming a molding material using a liquid photocurable resin, a separate sensitizer, photoinitiator and the like may be added in order to increase the speed of photo-curing.

In addition, a support (not shown) for supporting the light source 10 may be installed in the lower portion of the accommodating portion 300.

Since the light source 10 emits light in the ultraviolet region in the present embodiment, the photocurable resin accommodated in the accommodating portion 300 in the embodiment of the present invention reacts with light in the ultraviolet region, Curable resin.

Here, when the light source 10 emits an E-beam, the photocurable resin accommodated in the accommodating part 300 may be an electron beam hardening resin, A cured resin which is cured through the light in the visible light region can be applied.

In other words, the light irradiated from the light source 10 and the photocurable resin accommodated in the receiving portion 300 may be provided so as to correspond to each other.

A light control unit (not shown) may be disposed between the storage unit 300 and the light source 10. The light control unit may control the irradiation area of light reaching the accommodation unit 300 by adjusting the amount of light emitted from the light source 10. [ Here, the light control unit may be a shutter that determines the progress of light by entering or leaving the light path of the light emitted from the light source 10.

That is, while the cured photocurable resin is separated from the bottom portion 300b of the accommodating portion 300, the light control portion may completely enter the light path of the light to completely block the progress of the light, The irradiation area of the light can be adjusted by completely or partially entering the light path of the light to adjust the area to be cured according to the shape. At this time, the light control unit is not limited to any means that can control the irradiation area of the light emitted from the light source 10.

In this embodiment, the three-dimensional printing is performed by curing the photocurable resin so as to correspond to the two-dimensional plane to which the light is irradiated, and the process is sequentially repeated to eventually print the three-dimensional structure intended by the user. The surface of the molding object disposed on the mounting surface 100a of the receiving portion 300 is positioned to face the light source 10 so that the photocurable resin in the receiving portion 300 can be cured in a two-dimensional plane.

The area where the photocurable resin is hardened may be the area near the light source 10, that is, the area close to the lower surface of the receiving part 300, more preferably the lowest part inside the receiving part 300.

Accordingly, when the liquid resin stored in the accommodating portion 300 needs to be refilled or the molding plate 100 is detached from the upper bracket 213, 100 and the lower bracket 210 at the same time.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: Light source
100: plastic plate
200: Connection bracket
215:
220:
300:

Claims (6)

A 3D printing apparatus for curing a resin with a light source,
A molding plate having an attachment surface for attaching the molding object;
An accommodating portion accommodating the resin and having a space so that the molding object can be locked in the resin;
A lower bracket coupled to the shaping plate;
An upper bracket coupled to the lower bracket via a knob;
Elevating means coupled to the upper bracket, for elevating and lowering the lower bracket and the shaping plate together; And
And a grip portion fixed to the lower bracket,
Wherein the gripping portion is mounted on the lower bracket to be rotated. The method according to claim 1,
Wherein the gripping portion is coupled to the lower bracket with a grip shaft, and the grip shaft is orthogonal to the body portion of the knob. 3. The method of claim 2,
Wherein the gripping portion is installed to be rotated in units of 90 DEG around the grip portion shaft. 3. The method of claim 2,
Wherein the gripper shaft is a screw bolt having a screw thread on an outer circumferential surface thereof. 5. The method of claim 4,
Wherein at least two gripper shafts are provided. The method according to claim 1,
And a non-slip member on the surface of the gripper.

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