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KR101781182B1 - 3d printer with improved resin flow structure for output plate - Google Patents

3d printer with improved resin flow structure for output plate Download PDF

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Publication number
KR101781182B1
KR101781182B1 KR1020160000925A KR20160000925A KR101781182B1 KR 101781182 B1 KR101781182 B1 KR 101781182B1 KR 1020160000925 A KR1020160000925 A KR 1020160000925A KR 20160000925 A KR20160000925 A KR 20160000925A KR 101781182 B1 KR101781182 B1 KR 101781182B1
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South Korea
Prior art keywords
water tank
printer
bolt
motor
type screw
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KR1020160000925A
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Korean (ko)
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KR20170081906A (en
Inventor
오해성
김준오
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주식회사 덴티스
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Publication of KR20170081906A publication Critical patent/KR20170081906A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/40—Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 3D printer, and more particularly, to a photo-curing 3D printer that smoothes resin and bubble flow and drop-out during the printing of a molding.
To this end, the present invention provides a photocurable 3D printer comprising: a water tank for containing a photocurable resin whose bottom is formed of a transparent plate; And an output plate disposed on the upper portion of the water tank and having an opening groove formed on an adhesive surface for adhering an output molding formed by the photo-curable resin, thereby improving the resin flow of the output plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a photocurable 3D printer having an output plate with improved resin flow,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 3D printer, and more particularly, to a photo-curing 3D printer that smoothes resin and bubble flow and drop-out during the printing of a molding.

Three-dimensional printers were developed to produce prototypes before delivering products. To see if there are any problems with the actual products, 3D printers were used to produce the same prototypes as actual products, instead of actual products, saving cost and time. Since we can identify the problem of the actual product, we started to use it in large companies and factories.

In such a three-dimensional printer, a three-dimensional shape modeled through software such as a CAD system is converted into slice data divided into a plurality of thin cross-sectional layers, and then a plate-like sheet is formed by using the sliced data. The rapid prototyping method has been developed as a method of molding a sheet in the form of a plate.

Such rapid prototyping methods include a rapid prototyping method using powder using gypsum or nylon powder, a rapid prototyping method using a plastic liquid using a liquid (resin) dissolving a photo-curable plastic, a method of using a solid It can be divided into a rapid prototyping method using a plastic thread.

Among them, the rapid prototyping method using a plastic liquid is a method in which light is irradiated to a water tank containing a photo-curing resin, and a photo-curable resin to which light is irradiated is hardened according to the shape of the light to produce a thin plate- There is a liquid surface method and a free liquid surface method.

In the regulating liquid surface method, light is irradiated from the bottom of the water tank having a bottom surface formed of a transparent plate, and the bed is placed in the water tank to cure the resin in the water tank. Then, a resin-coated cured product is laminated by transferring upwardly the cured resin-coated bed. In the case of the regulating liquid surface method, when the size of the molding is large or the shape is not monotonous, the bed is squeezed as the bed is conveyed upward, so that a supporting stand capable of supporting the molding should be formed. And there is a problem that much care is required when removing the support.

2 is a view showing a structure of a hinge and a tilting driving apparatus for tilting in the 3D printer of FIG. 1, and FIG. 2 is a view showing the structure of a hinge and tilting driving apparatus for tilting in the 3D printer of FIG. 1, 3 is a view showing a structure of a planar output plate used for attaching an output in the 3D printer of Fig.

As shown in Fig. 1, a conventional regulated liquid surface type light-curing 3D printer has a structure in which light is irradiated from a lower portion of a water tank having a bottom surface formed of a transparent plate, the bed is placed in a water tank, And a laminate is formed by forming a resin cured product while transferring the bed with the cured resin cured product upward. Then, in order to release the molding from the bed, the transparent plate is tilted to release the molding.

As shown in FIGS. 2A and 2B, in order to tilt the plate to easily release the molding after the completion of printing, either side of the plate connects the hinge to the fixed support, In order to tilt the other side of the plate, the shaft of the linear motor is fixed in the vertical direction, and the linear motor is driven to vertically up and down to tilt the plate.

However, the conventional tilting structure of the regulated liquid surface type photocurable 3D printer uses a screw-type shaft-integrated linear DC motor. However, there is a problem that the DC motor needs to be replaced with a DC motor when the component is worn. There is a problem that control is limited.

In addition, in a state where the motor body is fixed, the screw shaft is moved vertically up and down to tilt the plate fixed to the shaft. It is difficult for the linear DC motor shaft to accurately convey and control the distance in the form of a spiral triangular thread, There is a problem that this is expensive.

2 (a), the plate-fixed hinge portion is often used as a general hinge, so that a general hinge has to be simple in structure and low in price, And it is vulnerable to wear when it is not used for a long time.

In addition, a planar output plate is used for attaching an output in a photo-curable 3D printer. As shown in Fig. 3, there is a problem that a sculpture, which is an output of a photo-curable 3D printer, frequently drops in the output plate. This is disadvantageous in that the flow of resin (solution) between the output plate and the release tanks is not smooth during the tilting operation, so that the bubbles formed in the tiles are not removed, adversely affecting the output molding.

Korean Registered Patent No. 10-1407060 (registered on June 05, 2014)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a photo-curing 3D printer which smoothes out resin and bubble flow and ejection during printing of a sculpture through an output plate processed in an inverted 'E' .

In addition, a sight having an improved tilting structure that realizes natural operation when tilting the water tank, improves durability and precision due to accurate tilting and efficient driving force transmission, reduces component wear due to frequent use of the tilting drive, It is intended to provide a 3D printer.

To this end, the present invention provides a photocurable 3D printer comprising: a water tank for containing a photocurable resin whose bottom is formed of a transparent plate; And an output plate disposed on the upper portion of the water tank and having an opening groove formed on an adhesive surface for adhering an output molding formed by the photo-curable resin, thereby improving the resin flow of the output plate.

Preferably, the open groove has an inverted 'E' shape.

According to another embodiment of the present invention, there is provided a photocurable 3D printer comprising: a water tank for containing a photocurable resin whose bottom is formed of a transparent plate; An output plate disposed on the upper portion of the water tank and having an opening groove formed on an adhesive surface for adhering an output molding formed by the photo-curable resin; A water tank receiving bed located on the lower surface of the water tank to seat the water tank; A light source for irradiating ultraviolet light at the bottom of the water tank; And a bolt type screw inserted into the nut type body and fixed to the lower end so as to rotate the bolt type screw so that the nut type body is inserted into the nut type body, And a tilting driving unit configured to include a motor for moving the upper and lower portions, whereby the resin flow of the output plate can be improved.

Preferably, the bolt-type screw is removably attachable to the step motor.

Preferably, the motor is a stepping motor, and the bolt-type screw may have a trapezoidal thread.

Preferably, the open groove has an inverted 'E' shape.

According to another embodiment of the present invention, there is provided a photocurable 3D printer, comprising: a water tank for containing a photocurable resin whose bottom is composed of a transparent plate; An output plate disposed on the upper portion of the water tank and having an opening groove formed on an adhesive surface for adhering an output molding formed by the photo-curable resin; A water tank receiving bed located on the lower surface of the water tank to seat the water tank; A light source for irradiating ultraviolet light at the bottom of the water tank; A fixed hinge portion pivotally connected to a support portion fixed to one side of the water tray mounting bed; A bolt type screw inserted into the nut type body and a bolt type screw fixed to the lower end so as to rotate the bolt type screw to vertically move the nut type body, And a tilting driving unit configured to include a motor for driving the output plate.

Preferably, the open groove has an inverted 'E' shape.

Preferably, the fixed hinge portion may include a shaft hinge portion spaced from both sides and fixed to the system, the shaft hinge portion having a center hinge hole formed therein; A shaft fixing part spaced apart from the lower surface of the water tray mounting bed inside the both shaft hinges and having through holes at the center thereof; And a pivot shaft inserted and connected to the hinge hole of the both shaft hinge portion and the through hole of the shaft fixing portion.

Preferably, a bearing may be provided around the hinge hole of the shaft hinge portion.

Preferably, the bolt-type screw is removably mountable to the step motor, and the motor is a step motor, and the bolt-type screw may be formed with a trapezoidal thread.

According to the present invention as described above, the open groove is formed in the bonding surface of the output plate to smooth the flow of the resin solution, and the resin of the bubble-like shape can be brought into contact with the side surface to firmly attach the output molding, .

In addition, it has a merit of realizing a natural operation when tilting the water tank, enhancing durability and precision due to accurate tilting and efficient driving force transmission, reducing parts wear due to frequent use of the tilting drive unit, and repairing in case of failure.

In addition, in the tilting structure, the fixed hinge portion is rotated by the fixed hinge portions on both sides with one shaft, thereby improving the durability and precision by improving the vulnerability of abrasion by a plurality of reciprocating rotations for a long time, To provide a sculpture.

1 is a schematic diagram of a printing method of a conventional regulated liquid surface type photocurable 3D printer,
FIG. 2 is a view showing a structure of a hinge and tilting driving apparatus for tilting in the 3D printer of FIG. 1,
FIG. 3 is a diagram illustrating a bubble flow in the output plate in a planar output plate and a tilting operation in the 3D printer of FIG. 1,
4 is a diagram illustrating a structure of a photocurable 3D printer having an inverse E-shaped structure according to a preferred embodiment of the present invention,
FIG. 5 is a view showing a bubble flow in the output plate during a tilting operation in a photocurable 3D printer having an inverted-E-shaped structure in FIG. 4,
6 is a diagram illustrating a structure of a tilting driving unit applied to a photocurable 3D printer having an improved tilting structure according to another embodiment of the present invention,
7 is a diagram illustrating a structure of a tilting driver 300 applied to a photocurable 3D printer having an improved tilting structure according to another embodiment of the present invention,
8 is a view illustrating a structure of a fixed hinge portion of a photocurable 3D printer having an improved tilting structure according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish it, will be described with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. The embodiments are provided so that those skilled in the art can easily carry out the technical idea of the present invention to those skilled in the art.

In the drawings, embodiments of the present invention are not limited to the specific forms shown and are exaggerated for clarity. Also, the same reference numerals denote the same components throughout the specification.

The expression "and / or" is used herein to mean including at least one of the elements listed before and after. Also, singular forms include plural forms unless the context clearly dictates otherwise. Also, components, steps, operations and elements referred to in the specification as " comprises "or" comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

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

FIG. 4 is a diagram illustrating the structure of a photocurable 3D printer having an inverse E-shaped structure according to a preferred embodiment of the present invention, and FIG. 5 is a cross- Fig. 7 is a view showing the bubble flow in the output plate.

4 and 5, a photocurable 3D printer according to an embodiment of the present invention includes a water tank 100 for storing a photocurable resin having a bottom as a transparent plate; A water tank mounting bed 150 positioned on the lower surface of the water tank 100 to seat the water tank 100; A light source 200 for irradiating ultraviolet light at the bottom of the water tank 100; And a motor 350 for moving the water tray mounting bed 150 up and down. At this time, the output plate 600 is disposed on the upper part of the water tank and has an inverted E-shaped adhesive surface for adhering the output molding formed by the photo-curable resin. For example, the bubble removing groove may be formed in the adhesive surface formed at the lower portion of the output plate 600 so that the lower surface of the output plate may have an inverted 'E' shape . As described above, bubble removing grooves are formed to improve the flow of resin and bubble dropout during 3D printer output, and it can be formed in various shapes such as a grid pattern as well as an inverted 'E' shape.

As shown in FIG. 5, when the tilting is performed, bubble dropping is facilitated between the bubble removing grooves, and the bubble-removing resin is contacted to the side surface to suppress the uncured layer of the photocurable resin, thereby improving the perfection of the output molding .

As described above, in the conventional tilting operation, the flow of the resin solution between the output plate and the water tank is not smooth due to the output molding of the photo-curable 3D printer, so that the bubbles formed inside are not removed and the output is adversely affected, However, in the present invention, the flow of the resin solution becomes smooth by forming the bubble-removing grooves of the output plate, and the resin of the bubble-like shape is brought into contact with the side surface, so that the output molding product can be firmly adhered to improve the completeness of the output product .

6 is a diagram illustrating a structure of a photocurable 3D printer having an improved tilting structure according to another embodiment of the present invention. As shown in FIG. 6, a photocurable 3D printer according to an embodiment of the present invention includes a water tank 100 containing a photocurable resin having a bottom formed of a transparent plate; An output plate (600) located on the top of the water tank and having an inverted E-shaped bonding surface for adhering an output molding formed by the photocurable resin; A water tank mounting bed 150 positioned on the lower surface of the water tank 100 to seat the water tank 100; A light source 200 for irradiating ultraviolet light at the bottom of the water tank 100; A nut type body 310 hingedly connected to a lower side of a lower surface of the water settlement bed 150, a bolt type screw 330 inserted into the body, and a bolt type screw And a motor 350 for rotating the nut-type body 310 up and down by rotating the tilting drive unit 300. The tilting drive unit 300 includes:

6, a photocurable 3D printer according to an embodiment of the present invention includes a water tank 100 for storing a photocurable resin having a bottom formed of a transparent plate, The ultraviolet light is irradiated to the water tank 100 from the light source 200 according to the printing information in accordance with the printing information so that the resin is cured in a thin printing layer unit and the cured layers are stacked to complete the molding . The tilting drive unit 300 is provided so as to tilt the water tray mounting bed 150 supporting the water tank 100 in either direction in order to release the molding in the water tank 100 after the molding product is completed by layer printing . In addition, bubble removing grooves can be formed on the adhesive surface formed on the lower surface of the output plate 600 so that bubbles are removed. The lower surface of the output plate is formed into an inverted 'E' shape . As described above, bubble removing grooves are formed to improve the flow of resin and bubble dropout during 3D printer output, and it can be formed in various shapes such as a grid pattern as well as an inverted 'E' shape.

In this manner, unlike the conventional tilting structure of the photocurable 3D printer, the nut type body 310 fixed to the water tray mounting bed 150 is rotated by the rotation of the fixed bolt type screw 330, The tilting operation of the water tub 100 can be realized by realizing the natural operation of the water tub 100 by tilting the water tub 100 by tilting the water tub 100 by moving vertically up and down by being fastened to the bolt type screw 330, Provided is a photo-curing 3D printer having an improved tilting structure that improves precision, reduces component wear due to frequent use of the tilting driver (300), and can be easily repaired in case of failure.

7 is a diagram illustrating a structure of a tilting driver 300 applied to a photocurable 3D printer having an improved tilting structure according to another embodiment of the present invention. 6, the tilting driving unit 300 applied to the photocurable 3D printer according to another embodiment of the present invention differs from the conventional DC linear motor 350 in that the linear shaft moves, The nut type body 310 hingedly connected to the water receiving tray 150 by a hinge is downwardly tilted while being moved vertically up and down.

The bolt-type screw 330 and the nut-type body 310 of the tilting drive unit 300 according to another embodiment of the present invention can be mounted and dismounted on the motor 350, Can be replaced. In other words, unlike the conventional DC linear motor 350, which is formed integrally with the screw, the nut type body 310 and the bolt type screw 330 can be easily replaced, and the cost is very low .

The motor 350 of the tilting driver 300 according to another embodiment of the present invention preferably uses a stepping motor 350. Unlike the linear DC motor 350 having a tilting structure applied to a conventional photocurable 3D printer, it can be precisely controlled and has a very low cost.

In the step motor 350, strong permanent magnets are arranged in the circumferential direction of the rotor at regular intervals, and are arranged in the axial direction as teeth. The permanent magnet has a structure in which an N pole and an S pole are arranged alternately with a gap corresponding to half of the width of the permanent magnet, thereby forming a circle (not shown).

More specifically, the two coils W1 and W2 are wound on the stator made by stacking the iron plates. They form two pole pairs, with the N and S poles of each pole pair designed to face each other. And the teeth integrated in the stator are distributed to function as a pole wheel (not shown)

The step motor 350 functions as a synchronous motor 350 when the pulse is continuously applied in a continuous manner so that the armature rotates in synchronism with the stator magnetic field so that precise control can be performed and the tilting angle control of the tilting drive unit 300 can be finely controlled It is possible to do. The 3D printer according to the embodiment of the present invention including the tilting driving unit 300 can remove the finished sculpture from the water tub 100 safely and cleanly without damaging it, do.

The bolt type screw 330 of the tilting driving part 300 applied to the photocurable 3D printer according to another embodiment of the present invention can be attached to and detached from the step motor 350 on one side, As the formed structure, it is preferable that the threads are formed in a trapezoidal shape.

7, a trapezoidal thread is inserted into the nut-shaped body 310, and the nut-shaped body 310 is moved along the trapezoidal thread, some of which are vertically moved, It is possible to increase the accuracy of tilting angle control by forming a stop section.

The continuous moving structure, such as a thread of a general spiral or triangular structure, causes backlash, which is a mechanical error that may occur between movement and stoppage, which degrades the precision of the control. However, the trapezoidal shape Is advantageous in that backlash can be largely reduced and precise control is possible along with driving of the stepping motor 350 because the moving structure and the stopping section are partitioned. The step motor 350 and the screw of the trapezoidal shape can easily control the moving speed and the moving distance of the vertical upper and lower chambers, so that the tilting angle can be easily controlled and precise control can be performed.

It is also possible for the trapezoidal screw thread to function as a shock absorbing structure of the physical water tank 100 in which the screw is naturally released from the screw when the motor 350 is excessively lifted up to a specified distance or more.

8 is a view illustrating the structure of a fixed hinge part 400 of a photocurable 3D printer having an improved tilting structure according to another embodiment of the present invention. As shown in FIG. 8, the curing 3D printer according to another embodiment of the present invention comprises: a water tank 100 for containing a photocurable resin having a bottom formed of a transparent plate; An output plate (600) located on the top of the water tank and having an inverted E-shaped bonding surface for adhering an output molding formed by the photocurable resin; A water tank mounting bed 150 positioned on the lower surface of the water tank 100 to seat the water tank 100; A light source 200 for irradiating ultraviolet light at the bottom of the water tank 100; A fixed hinge part (400) pivotally connected to a supporting part fixed to one side of the water tray mounting bed (150); A nut type body 310 fixed to the other side of the water tray mounting bed 150 by a hinge, a bolt type screw 330 inserted into the body and a bolt type screw 330 fixed to the lower side, And a tilting driver 300 configured to rotate the nut-type body 310 to move the nut-type body 310 up and down.

Hereinafter, the configuration except for the fixed hinge part 400 is the same as that of the embodiment shown in Figs. 6 and 7, and a description thereof will be omitted.

As shown in FIG. 8, the fixed hinge unit 400 according to another embodiment of the present invention is a hinge structure on the opposite side of the tilting drive unit 300, and is a structure in which the system is pivotally fixed. In other words, the watertight seating bed 150 supporting the water tank 100 can be tilted by being pivotally fixed on one side and vertically moved up and down on the other side.

The conventional structure of the fixed hinge unit 400 of the photocurable 3D printer is advantageous in that the cost is low using a general hinge, but the durability against frequent reciprocating rotation is very low and is not precise.

According to another embodiment of the present invention, there is proposed a structure in which durability and precision can be improved by having a central axis and a hinge on both sides to rotate. As shown in FIG. 8, the fixed hinge part 400, which is applied to the embodiment of the present invention, includes a shaft hinge part 410 fixed to the system and spaced apart from both sides and having a hinge hole at the center thereof; A shaft fixing part 430 spaced apart from the lower surface of the water tray mounting bed 150 inside the both shaft hinge parts 410 and having through holes at the center thereof; And a pivot shaft 450 inserted into the through hole of the shaft fixing part 430 and connected to the hinge hole of the both shaft hinge part 410. That is, the structure in which the pivot shaft 450 mounted on both the shaft hinges 410 rotates to rotate the water tray mounting bed 150 at all times, instead of a conventional hinge structure that rotates around a single hinge axis at the central portion I suggest.

More specifically, the fixed hinge unit 400 is provided with a shaft fixing unit 430 spaced apart from both sides of the lower surface of the water tray mounting bed 150 and having a through hole at its center, And a pivot shaft 450 inserted into the through hole of the shaft fixing part 430 and connected to the hinge hole of the both shaft hinge parts And the shaft fixing part 430 fixed to the rotation shaft 450 and the water tray mounting bed 150 are rotated.

The connection between the pivot shaft 450 and the hinge hole is preferably a connection structure of the bearing 415 because the abrasion due to the reciprocal rotation and the position accuracy are much better than the conventional hinge structure.

That is, in the tilting structure according to the embodiment of the present invention, the fixed hinge part 400 is pivoted by the fixed hinge part 400 on both sides with one axis to improve the vulnerability of abrasion by a plurality of reciprocating rotations for a long time, And a structure capable of increasing precision.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100: water tank, 150: water tank mounting bed, 200: light source,
310: nut type body, 330: bolt type screw, 350: motor, 300: tilting driving part
400: fixed hinge portion, 410: shaft hinge portion, 415: bearing,
430: shaft fixing unit, 450: rotating shaft, 600: output plate

Claims (14)

In a photocurable 3D printer,
A water tank for containing a photocurable resin having a bottom formed of a transparent plate;
An output plate disposed on the upper portion of the water tank and having an opening groove formed on an adhesive surface for adhering an output molding formed by the photo-curable resin;
A water tank receiving bed located on the lower surface of the water tank to seat the water tank;
A light source for irradiating ultraviolet light at the bottom of the water tank; And
A bolt type screw having a screw thread formed in a trapezoidal shape thread and inserted into the nut type body; and a bolt type screw fixed to a lower end of the bolt type screw, And a tilting driver configured to rotate the bolt-type screw to move the nut-type body up and down,
The bolt-type screw is removably attachable to the motor,
Wherein the nut-shaped body moves along the thread according to the control of the motor to divide the moving section and the stationary section.
The method according to claim 1,
Characterized in that said open groove has an inverted 'E' shape.
The method according to claim 1,
Characterized in that the motor is a stepper motor.
In a photocurable 3D printer,
A water tank for containing a photocurable resin having a bottom formed of a transparent plate;
An output plate having an opening formed in an upper portion of the water tank and having an inverted 'E' shape on an adhesive surface for adhering an output molding formed by the photocurable resin;
A water tank receiving bed located on the lower surface of the water tank to seat the water tank;
A light source for irradiating ultraviolet light at the bottom of the water tank;
A fixed hinge portion pivotally connected to a support portion fixed to one side of the water tray mounting bed;
A bolt type screw having a screw thread formed in a trapezoidal shape and the screw thread is inserted into the nut type body, and a bolt type screw fixed to the lower end of the bolt type screw, And a tilting driver configured to rotate the bolt-type screw to move the nut-type body up and down,
The bolt-type screw is removably attachable to the motor,
Wherein the nut-shaped body moves along the thread according to the control of the motor to divide the moving section and the stationary section.
5. The method of claim 4,
The fixed hinge portion includes:
A shaft hinge portion which is spaced apart from both sides and fixed to the system and has a hinge hole at the center thereof;
A shaft fixing part spaced apart from the lower surface of the water tray mounting bed inside the both shaft hinges and having through holes at the center thereof; And
And a pivot shaft inserted and connected to the through hole of the shaft fixing part and the hinge hole of the both shaft hinge parts.
6. The method of claim 5,
Characterized in that a bearing is provided around the hinge hole of the shaft hinge portion.
5. The method of claim 4,
Characterized in that said open groove has an inverted 'E' shape.
5. The method of claim 4,
Characterized in that the motor is a stepper motor.
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