KR101882574B1 - Three-dimension printing apparatus using photocurable resin - Google Patents

Abstract

The present invention relates to a three-dimensional printing apparatus using a photocurable resin capable of easily separating a cured photocurable resin from a bottom surface of a receiving portion by moving a receiving portion containing a photocurable resin along a spiral direction, An accommodating portion provided with light and providing a space through which the photocurable resin accommodated therein is cured; A moving part for moving the photocurable resin cured so that the photocurable resin accommodated in the accommodating part is sequentially cured by the light, in a direction away from the light source; And a separation guide mounted on the receiving part and moving simultaneously with the receiving part along the spiral direction so that the cured photocurable resin is separated from the inner surface of the receiving part.

Description

[0001] THREE-DIMENSION PRINTING APPARATUS USING PHOTOCURABLE RESIN [0002]

The present invention relates to a three-dimensional printing apparatus using a photocurable resin, and more particularly, to a three-dimensional printing apparatus using a photocurable resin, in which a photocurable resin attached to a bottom surface of a receiving portion The present invention relates to a three-dimensional printing apparatus using a photocurable resin which can be easily separated from a bottom surface.

Recently, a 3D printer capable of printing three-dimensional objects as well as a two-dimensional printer has been actively studied.

Here, the three-dimensional printer is a device for manufacturing three-dimensional objects by stacking materials such as polymer (resin) and metal in the form of liquid or powder in a processing-layer-by-layer manner according to design data.

This is derived from Rapid Prototyping (RP), which means rapid prototyping using shapes of laser and powder materials to produce according to 3D CAD. Contrary to Subtractive Manufacturing, which produces stereoscopic materials by cutting or shaving stereoscopic materials using machining or laser.

A variety of three-dimensional printers have been developed so far. Fused Deposition Modeling (FDM) method in which filament-type thermoplastic materials are melted in a nozzle and output in a thin film form, Multi jetting modeling (MJM) method in which wax is simultaneously injected and solidified by ultraviolet rays, DLP (Digital Light Projector) method of shaping light to be shaped into a liquid photocurable resin, And a DLP (Digital Light Processing) method in which the light is projected onto the light guide plate and laminated.

Among them, the DLP method has a merit that the price is low, the work speed is uniform, and the molding speed is relatively fast. In spite of these advantages, there arises a problem that the cured photocurable resin adheres to the inner wall surface of the receiving part during the curing of the photocurable resin and the shape of the cured photocured resin is damaged during the separation.

Therefore, in the case of printing a three-dimensional structure by the DLP method, how to efficiently separate the cured photocurable resin from the inner wall of the receiving part is one of the problems to be solved. .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the problems of the prior art described above, and it is an object of the present invention to provide a method and apparatus for efficiently separating a photocurable resin cured from an inner wall surface of a receiving portion by moving a receiving portion, Dimensional printing apparatus using a photocurable resin.

According to the present invention, the above object can be accomplished by providing a light emitting device comprising: an accommodating portion which is provided with light emitted from a light source and provides a space through which light is cured; A moving part for moving the photocurable resin cured so that the photocurable resin accommodated in the accommodating part is sequentially cured by the light, in a direction away from the light source; And a separation guide mounted on the receiving part and moving simultaneously with the receiving part along a spiral direction so that the cured photocurable resin is separated from the inner surface of the receiving part. Lt; / RTI >

Here, the separation guide may include: a body surrounding the outer surface of the receiving portion; A driving unit connected to one end of the body and configured to move one end of the body along the gravity direction through rotation of the protrusion, the rotation shaft having a protrusion formed on an outer surface thereof; And a pair of sliding parts mounted on the other end of the body, wherein one of the pair of the sliding parts is fixed in position while the other part is sliding on the body when the driving part is in motion.

Preferably, the sliding portion is rotatably mounted on both side edges of the other end of the body.

A case for accommodating the light source, the light control unit, and the separation guide unit therein; And a rail part connected to the inner surface of the case and connected to the sliding part so that the sliding part can slide along the longitudinal direction.

The separation guide may further include a separation preventing part rotatably mounted at both ends of one end of the body so as to prevent the body from separating from the predetermined movement direction and the other end penetrating the outer surface of the case .

The separation guide may further include an elastic member mounted on the separation preventing part and returning the separation guide and the body to an original position by applying an elastic force to the separation preventing part.

In addition, a light sensor unit for measuring light information emitted from the light source; And a controller for receiving optical information from the optical sensor unit and controlling intensity of light emitted from the optical source unit.

Preferably, the restricting portion is detachably connected to the body, and the time when the restricting portion departs from the body is a time when the accommodating portion and the moving portion come into contact with each other.

According to the present invention, there is provided a three-dimensional printing apparatus using a photocurable resin capable of effectively separating a cured photocurable resin from the inner wall surface of a receiving portion while maintaining the shape of the cured photocurable resin.

Further, the intensity of light emitted from the light source can be measured and the intensity of light emitted from the light source can be controlled on the basis of the intensity of the light, thereby effectively curing the photo-curable resin.

In addition, even if the housing part repeatedly moves, the photocurable resin can be accurately returned to the initial position for curing.

The apparatus may further include a restricting portion connected between the case and the body and restricting movement of the accommodating portion by restricting a movement path of the body in a direction close to the case.

FIG. 1 is a view schematically showing a three-dimensional printing apparatus using a photocurable resin according to an embodiment of the present invention,
FIG. 2 is a view schematically showing a moving part in a three-dimensional printing apparatus using the photocurable resin according to FIG. 1,
FIG. 3 is a view schematically showing a separation guide in a three-dimensional printing apparatus using the photocurable resin according to FIG. 1,
FIG. 4 is a view schematically showing a state in which a tilt occurs in a body in a three-dimensional printing apparatus using the photocurable resin according to FIG. 1,
FIG. 5 is a view schematically showing a state where a twist occurs in a body in a three-dimensional printing apparatus using the photocurable resin according to FIG. 1,
FIG. 6 is a view schematically showing a state in which a tilt and a twist are simultaneously generated in a body in a three-dimensional printing apparatus using the photocurable resin according to FIG. 1,
FIG. 7 is a graph schematically showing a change amount of light amount emitted from a light source in a three-dimensional printing apparatus using the photocurable resin according to FIG. 1,
8 is a flowchart illustrating a method of operating a three-dimensional printing apparatus using a photocurable resin according to an embodiment of the present invention.

Hereinafter, a three-dimensional printing apparatus using a photocurable resin according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing a three-dimensional printing apparatus using a photocurable resin according to an embodiment of the present invention.

Referring to FIG. 1, a three-dimensional printing apparatus 100 using a photo-curing resin according to an embodiment of the present invention includes a cured photo-curing resin without deforming the shape of the cured photo- A light guiding part 150, a case 160 and a photosensor part (not shown), which can effectively separate the light source 110, the light control part 120, the accommodating part 130, the moving part 140, And a control unit (not shown).

The light source 110 emits light for curing the photocurable resin.

In an embodiment of the present invention, the light emitted from the light source 110 may be provided by ultraviolet (UV) light. In general, since ultraviolet rays have a wavelength shorter than other visible rays, it is possible to use fine pixels by providing a phase-modulation exposure head using ultraviolet rays as a light source.

However, the present invention is not limited thereto, and any region of light such as electron beam (EB) or visible light may be used as long as the three-dimensional structure can be printed by curing the photocurable resin.

The light control unit 120 is provided between the light source 110 and a receiving unit 130 to be described later and adjusts the irradiation area of the light emitted from the light source 110 to reach the receiving unit 130.

That is, the light adjusting unit 120 is disposed on the optical path of the light emitted from the light source 110 to adjust the irradiation area of the light reaching the receiving unit 130 side.

Meanwhile, in one embodiment of the present invention, the light control unit 120 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 110.

That is, during the separation process of separating the cured photocurable resin from the inner wall surface of the receiving portion 130, the light control portion 120 can completely enter the light path of the light to completely block the progress of the light, In order to adjust the area to be cured, the light control part 120 can adjust the irradiation area of the light completely or partially entering the light path of the light.

Of course, in one embodiment of the present invention, the light control unit 120 is not implemented only by the above-described contents, and it is needless to say that any means capable of adjusting the light irradiation area can be applied.

The accommodating portion 130 accommodates the photocurable resin therein and also provides a space in which the photocurable resin is cured.

Since the light source 110 emits light in the ultraviolet region in the embodiment of the present invention, the photo-curing resin contained in the housing 130 in the embodiment of the present invention may be a light- And is preferably provided with an ultraviolet curing water quality which reacts and cures.

Of course, unlike the embodiment of the present invention, when the light source 110 emits an E-beam, the photocurable resin accommodated in the housing 130 may use an electron beam hardening resin, A cured resin which is cured through the light in the region of the gas ray can be used in the case of emitting light corresponding to the region of the visible light ray from the light source 110.

In other words, the light emitted from the light source 110 and the photocurable resin accommodated in the housing 130 are provided so as to correspond to each other

In the present invention, the three-dimensional printing cures the photo-curable resin corresponding to the two-dimensional plane to which the light is irradiated, and this process is repeated in sequence to finally print the three-dimensional structure intended by the user. Can place the light source 110 on the lower surface so as to cure the photocurable resin in the housing 130 into a two-dimensional plane.

In one embodiment of the present invention, the area where the photocurable resin is hardened is a region close to the light source 110, that is, a region close to the lower surface of the accommodating portion 130, more preferably, ), ≪ / RTI >

2 is a view schematically showing a moving part in a three-dimensional printing apparatus using the photocurable resin according to FIG.

Referring to FIG. 2, the moving unit 140 is for three-dimensionally curing the photocurable resin sequentially, and is movable in the height direction of the three-dimensional shape.

That is, when the photocurable resin is cured by the light emitted from the light source 110, the moving part 140 moves the cured photocurable resin in the gravitational direction, more preferably the height of the three- And moves away from the light source 110 along the direction. Thus, the uncured photocurable resins flow into the area where the photocurable resin is cured in the accommodating part 130, and then the light whose irradiated area is adjusted by the light control part 120 is irradiated, The photo-curable resin is cured sequentially in correspondence with the shape of the dimensional structure.

Meanwhile, according to one embodiment of the present invention, the moving unit 140 is provided to move the cured photocurable resins by attaching the photocurable resins on the lower surface facing the light source 110 while being cured.

That is, at least the lower surface of the moving part 140 is located inside the accommodating part 130, and curing of the photocurable resin occurs in the area between the lower surface of the moving part 140 and the inside lower surface of the accommodating part 130.

The spacing between the lower surface of the moving unit 140 and the lower surface of the receiving unit 130 is determined by considering the intensity of the light emitted from the light source 110, It is preferable that they are spaced apart to such an extent that they can be attached.

It is preferable that the lower surface of the moving part 140 is formed of a material having a higher adhesion force with the photocurable resin than the inner surface of the receiving part 130, which will be described later.

3 is a view schematically showing a separation guide in a three-dimensional printing apparatus using the photocurable resin according to FIG.

Referring to FIG. 3, when the moving unit 140 moves the cured photocurable resin, the separation guide unit 150 may be configured such that the cured photocurable resin is easily separated from the inner wall surface of the receiving unit 130 The sliding portion 155, the separation preventing portion 156, and the elastic member 157 are moved in the direction of the helical direction by moving the receiving portion 130 along the spiral direction. .

The body 151 serves as a main frame of the separation guide unit 150 and is disposed to surround the outer surface of the receiving unit 130. More preferably, the body 151 and the receiving portion 130 are formed to correspond to the outer shape of the receiving portion 130 so that the body 151 and the receiving portion 130 can move integrally.

In an embodiment of the present invention, the body 151 is formed as a plate-like member, and an insertion portion 151a into which the receiving portion 130 can be inserted is formed, but is not limited thereto. For convenience of explanation, it is assumed that the body 151 is disposed parallel to the ground in a state where no tilt or twist occurs.

FIG. 4 is a view schematically showing a state in which a tilt occurs in a body in a three-dimensional printing apparatus using the photocurable resin according to FIG.

4, the driving unit 152 is connected to one end of the body 151 to guide a tilt to one end of the body 151. The driving unit 152 includes a rotary shaft 153 and a rotary shaft 153, A protrusion 154 protruding along the direction is formed.

The rotary shaft 153 of the driving unit 152 is kept in contact with one end of the body 151 and the rotary shaft 153 of the driving unit 152 is rotated so that the projection 151 154 are in contact with each other, one end of the body 151 is inclined downwardly and is defined as a tilt.

The degree of inclination of one end of the body 151 differs depending on the contact position of the protrusion 154 and one end of the body 151. When the protrusion 154 is vertically disposed at one end of the body 151, 151) The tilting of one end becomes the maximum.

Accordingly, the receiving portion 130 also tilts together with the body 151.

The rotating direction of the rotating shaft 153 of the driving unit 152 can be appropriately adjusted and the rotating direction of the rotating shaft 153 and any one of the pair of sliding units 155, It is possible to change the twist direction of the light source 151.

FIG. 5 is a view schematically showing a state where a twist occurs in a body in the three-dimensional printing apparatus using the photocurable resin according to FIG.

5, a pair of the sliding portions 155 is mounted on the other end of the body 151, and when the driving portion 152 moves, more specifically, the projection 154 comes into contact with one end of the body 151 One of the pair is fixed and the other one is slid in the direction toward one end from the other end of the body 151 to generate a twist of the body 151. [

The sliding portion 155 is rotatably mounted on both side edges of the other end of the body 151. The sliding portion 155 is tilted at one end of the body 151, For sliding.

That is, if the sliding portion 155 is rotatably installed on both sides of the other end of the body 151, a negative influence on the tilting of one end of the body 151 can be eliminated.

Also, one of the pair of sliding portions 155 is fixed and the other is slid, thereby rotating the body 151 about the fixed sliding portion 155. Here, the rotational direction of the body 151 is determined depending on which of the pair of sliding parts 155 is fixed, and the directionality thereof can be determined according to the user's intention.

FIG. 6 is a view schematically showing a state in which a tilt and a twist are simultaneously generated in a body in a three-dimensional printing apparatus using the photocurable resin according to FIG.

Referring to FIG. 6, the interlocking process of the driving unit 152 and the sliding unit 155 will be described. When tilting occurs at one end of the body 151 by the protrusion 154 of the driving unit 152 And a twist is generated around the fixed sliding portion 155 at the other end of the body 151.

That is, the body 151 moves along the spiral direction by simultaneously generating tilt and twist, and the receiving part 130 moving simultaneously with the body 151 also moves along the spiral direction.

The reason for moving the accommodating portion 130 along the spiral direction is to effectively separate the cured photocurable resin from the inner bottom surface of the accommodating portion 130. [ That is, the photocurable resin attached to the inner bottom surface of the accommodating portion 130 is separated by separating the shear force and the vertical drag simultaneously. In the case of separating the cured photocurable resin simply by moving the photocurable resin hardened through the moving part 140 or by separating the receiving part 130 from the moving part 140, the shape of the hardened photocurable resin A twist and a tilt are simultaneously applied to the accommodating portion 130 in order to prevent such a damage.

At this time, the sliding portion 155 is provided with at least a portion of the body 151 which is in contact with both side edges of the other side of the body 151. The sliding portion 155 is formed of a material having elasticity, So that it is possible to hold the applied load.

The degree of twist of the body 151 may be smaller than the tilt of the body 151 to minimize the load applied to the connecting portion between the sliding portion 155 and the body 151. [

One end of the body 151 is rotatably mounted on one end of the body 151 and the other end of the body 151 moves through the outer surface of the case 160 Thereby preventing the movement from deviating from the predetermined movement direction.

In other words, the departure preventing portion 156 limits the range of motion of the body 151 and maintains the state in which the body 151 can repeatedly move within this range of motion.

The release preventing portion 156 may be disposed between the escape preventing portion 156 and the case 160 or may be an elastic member that is disposed to be supported by the case 160 through the escape preventing portion 156 157).

That is, when the rotary shaft 153 of the driving unit 152 further rotates in a state where the protruding portion 154 of the driving unit 152 is disposed vertically at one end of the body 151, the elastic member 157 is fixed to the body 151 The contact state between the body 151 and the rotary shaft 153 is maintained by applying an elastic force.

In other words, the tilt of the body 151 is generated by the driving unit 152, but is recovered by the elastic member 157.

On the other hand, the departure prevention portion 156 does not move along the gravity direction but moves in a direction in which the twist is generated. Of course, since twisted displacements are generated very little, they can be seen to move substantially along the direction of gravity.

The case 160 accommodates the light source 110, the light control unit 120, and the separation guide unit 150 therein.

That is, in one embodiment of the present invention, at least the step of curing the photocurable resin is performed inside the case 160, so that the factors that adversely affect the process of curing the photocurable resin unintentionally interfere It can be dispensed.

The case 160 may further include a rail portion 161 connected to the sliding portion 155 of the separation guide portion 150 to allow the sliding portion 155 to slide.

The rail portion 161 extends from the inner wall surface of the case 160 and extends to the sliding portion 155 so that the sliding portion 155 can slide along the longitudinal direction. The rail portion 161 includes a connecting portion 162 and a rail 163).

The connection portion 162 is a member that extends from the inner wall surface of the case 160 and fixes the position of the rail 163.

The rail 163 is a member extending from one end of the body 151 at the other end or in a direction toward one end from the other end (hereinafter referred to as "longitudinal direction"), and is a member to which the sliding portion 155 is slidably mounted.

On the other hand, the rail part 161 is provided in a pair so as to correspond to the pair of sliding parts 155.

6, the limiting unit 170 is connected between the body 151 and the case 160, and in particular, one end connected to the case 160 is a member detachably attached to the case 160 And restricts the movement path of the body 151 in the direction of approaching the case 160.

In one embodiment of the present invention, the limiting portion 170 is provided with a pair of the anti-departure portions 156, one end of which extends through the case 170, The motion path of the motor 170 is limited. This is because the movement path of the body 151 detachably connected to the other end of the restricting portion 170 is also limited and particularly the degree of the proximity of the body 151 to the case 160, To limit the motion path to.

Furthermore, in one embodiment of the present invention, the limiting section 170 may be provided so as to generate an electric current with the body 151. This can be used to determine the initial position of the patterning by measuring the contact state between the receiving portion 130 and the moving portion 140.

More specifically, when tilting occurs only in the body 151 due to contact between the receiving portion 130 and the moving portion 140 due to the movement of the moving portion 140, The contact state between the limiting portion 170 and the body 151 is released.

When the lower surface of the receiving portion 130 and the lower surface of the moving portion 140 come into contact with each other due to the movement of the moving portion 140, a force in the gravity direction is applied to the receiving portion 130, Only tilt occurs.

That is, when the flow of current is interrupted between the body 151 and the restricting part 170 during the movement of the moving part 140 toward the receiving part 130, the tilting 151 This is the case when the inner bottom surface of the receiving portion 130 and the lower surface of the moving portion 140 are in contact with each other.

Accordingly, the timing at which the flow of the current between the body 151 and the restricting portion 170 is interrupted is determined as the initial point of time for patterning, and the moving portion 140 is moved upward by a predetermined height, And the lower surface of the moving part 140 can be spaced apart at regular intervals.

The lower surface of the receiving portion 130 and the lower surface of the moving portion 140 are spaced approximately 25 to 50 占 퐉 and when the moving portion 140 is moved upward by about 50 占 퐉 each time, The lower surface of the photocurable resin cured from the inner bottom surface of the accommodating portion 130 is maintained to be spaced apart at substantially equal intervals.

Of course, the distance between the inner bottom surface of the receiving portion 130 and the lower surface of the moving portion 140 is not limited to this, and can be changed as needed.

The optical sensor unit (not shown) measures information of light emitted from the light source 110. In an embodiment of the present invention, an optical sensor unit (not shown) measures information of light by converting the intensity of light into a voltage.

FIG. 7 is a graph schematically showing a variation amount of light emitted from a light source in a three-dimensional printing apparatus using the photocurable resin according to FIG.

Referring to FIG. 7, since the amount of light emitted from the light source 110 varies with time, the intensity of the light emitted from the light source 110 can be constantly output by measuring the light amount at real time or at predetermined time intervals.

The controller (not shown) receives light information from the optical sensor unit (not shown) and adjusts the intensity of light emitted from the light source 110. The reason for adjusting the intensity of the light emitted from the light source 110 is substantially the same as that described in the above-described optical sensor unit (not shown), so that detailed description is omitted here.

Hereinafter, the operation of one embodiment of the three-dimensional printing apparatus using the photocurable resin will be described.

8 is a flowchart illustrating a method of operating a three-dimensional printing apparatus using a photocurable resin according to an embodiment of the present invention.

Referring to FIG. 8, an operation method of a three-dimensional printing apparatus using a photocurable resin according to an embodiment of the present invention includes an irradiating step S110, a light controlling step S120, a separating step S130, And an iterative step S150.

The irradiating step S110 irradiates the light emitted from the light source 110 to the outer bottom surface of the receiving part 130. [

Here, the light emitted from the light source 110 is selected in accordance with the nature of the photocurable resin, as described above.

According to an embodiment of the present invention, the irradiating step S110 may further include a light measuring step S111 and a light amount controlling step S112.

That is, it is preferable that the intensity of the light radiated from the light source 110 to the receiving portion 130 is kept constant, while the light emitted from the light source 110 changes with time. Accordingly, the light measuring step S111 measures the intensity of the light emitted from the light source 110 in real time or at a predetermined time interval, and the light intensity control step S112 calculates the light intensity based on the variation amount of the light intensity The amount of light emitted from the light source 110 through the control unit (not shown) may be adjusted to maintain the intensity of the light emitted to the receiving unit 130 at a constant level.

The light control step S120 is a step of controlling an irradiation area of light emitted from the light source 110 through the light control unit 120. [ In an embodiment of the present invention, the light control unit 120 is disposed on the optical path so as to block the progress of the light toward the receiving unit 130, but the present invention is not limited thereto.

The separating step S130 is a step of separating the moving part 140 from the receiving part 150 through the tilting and twisting of the body 151, 130 is moved along the spiral direction to separate the photocurable resin attached to the inner bottom surface of the accommodating portion 130 in a cured state.

In the past, it has been common to separate the cured photocurable resin from the inner bottom surface of the accommodating portion 130 by applying the normal force or the shearing stress simply by moving the accommodating portion 130 or the moving portion 140, The problem of the three-dimensional shape of the cured photocurable resin being damaged is considerably generated.

Accordingly, in one embodiment of the present invention, the separation guide 150 may be tilted in a spiral direction, more precisely, a tilt at one end of the body 110, and a pair of sliding portions installed at the other end of the body 110 Thereby moving the receiving part 130 moving simultaneously with the separation guide part 150 through a twist about the other fixed one.

That is, by simultaneously applying a shearing force and a vertical drag to the contact portion between the receiving portion 130 and the cured photocurable resin, the photocurable resin cured without deforming the three-dimensional structure is more effectively transferred to the inner bottom Can be separated from the surface.

The moving step S140 is a step of moving the photocurable resin separated from the inner bottom surface of the accommodating part 130 upward through the moving part 140 through the separating step S130.

Since the three-dimensional printing is performed by curing the accommodating portion 130 in a stepwise manner in the embodiment of the present invention, in the moving step S140, the photocurable resin cured in the accommodating portion 130 is removed from the region where curing occurs And the liquid photocurable resin is allowed to flow into the region where curing occurs.

Here, the interval for moving the photocurable resin cured by the moving part 140 is set such that the bottom surface of the cured photocurable resin is separated from the area where curing occurs, more preferably the bottom surface of the cured photocurable resin The photocuring resin is moved until it comes into contact with the interface of the area where the hardening occurs.

The repeating step S150 is a step of repeating the irradiation step S110 to the moving step S140 until the printing of the three-dimensional structure is completed.

That is, in a state in which the moving step S140 is completed, light is irradiated again to the receiving portion 130 to cure the photocurable resin, and the photocurable resin attached to the inner bottom surface of the receiving portion 130 in a cured state And the photocurable resin that has been cured twice is moved through the moving part 140, and the process is repeated.

As a result, printing of the three-dimensional structure is completed when the repeating step S150 is completed.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: Three-dimensional printing apparatus using photocurable resin
110: light source 120: light control unit
130: accommodating part 140: moving part
150: separation guide part 160: case

Claims (1)

A receiving portion provided with light emitted from a light source and providing a space through which the photo-cured resin accommodated therein is cured;
A moving part for moving the photocurable resin cured so that the photocurable resin accommodated in the accommodating part is sequentially cured by the light, in a direction away from the light source; And
A tilt and a twist are generated in the receiving portion so that the cured photocurable resin is separated from the inner surface of the receiving portion by applying a shearing force and a vertical drag to the cured photocurable resin, And a separating guide portion that moves along the direction of the receiving portion along the direction of the receiving portion.

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