KR102542807B1 - 3D printer - Google Patents

Abstract

The 3D printer according to the present invention includes a frame in which multiple parts are embedded and providing a lamination work area for photocurable resin, and a plurality of resin transfer units fixed to the frame to apply and transfer different photocurable resins to a transfer film, and , A bed assembly that is rotatably installed on the frame and forms an output product by alternately laminating photocurable resin transported by a plurality of resin transfer units on a bed, and a bed installed between a plurality of resin transfer units within a rotation radius of the bed assembly It is characterized in that it is configured to include a washing unit for washing the lower surface of the output stacked on one side of the assembly.

Description

3D printer {3D printer}

The present invention relates to a 3D printer, and more particularly, a plurality of resin transfer units for applying and transferring a photocurable resin to a transfer film, and a single bed assembly on which the photocurable resin is stacked, but the bed assembly rotates It relates to a 3D printer configured to enable molding by stacking photocurable resin alternately from a plurality of resin transfer units.

The present invention relates to a 3D printer capable of multi-material laminate molding by supplying different photocurable resins to a plurality of resin transfer units.

The present invention relates to a 3D printer having a washing unit below a bed on which a photocurable resin is laminated and molded to remove foreign substances and oil from the bottom of the photocurable resin, thereby improving the quality of the output and improving the bonding strength of each layer.

The present invention relates to a 3D printer capable of maximizing cleaning efficiency by cleaning while moving a cleaning gauze soaked in a cleaning solution and fundamentally blocking the inflow of contaminants.

The present invention relates to a 3D printer capable of maximizing space efficiency by minimizing a volume by configuring a light irradiation unit to be integrally coupled with a bed assembly to rotate together with the bed assembly.

The present invention relates to a 3D printer capable of exhibiting optimal cleaning performance according to the type of photocurable resin or working environment by preparing various cleaning solutions in a cleaning unit.

The present invention relates to a 3D printer capable of reducing environmental pollution by providing a resin separator at one side of a resin transfer unit to separate a photocurable resin from a transfer film.

3D printer refers to a device that prints the three-dimensional shape of the real thing, that is, a sculpture, based on a three-dimensional drawing made with a computer program. Deposition Modeling) method, DLP (Digital Light Processing) method using liquid raw materials, and SLS (Selective Laser Sintering) method using powder-type raw materials.

Among them, the DLP (Digital Light Processing) method divides the output into a plurality of layers in a 3D CAD environment, converts them into picture data, and then projects high-resolution projection light from a DLP projection device (light source device) onto a photocurable resin to create a single layer. It acts to stack photocured outputs one by one, and since the projected light hardens one layer of photocurable resin, the output speed is fast and it is easy to implement fine shapes, so it is widely used in recent years.

For example, Korean Patent Registration No. 10-1647799 has a structure of a cartridge for a DLP-type 3D printer in which a water tank accommodating cured resin is detachably cartridgeized as shown in FIG. 1 to effectively prevent cured resin from contacting the human body. has been initiated.

In addition, Korean Patent Publication No. 10-2016-0135551 discloses a structure of a high-speed 3D printer provided with a separator so that a cured monolayer cured by light does not adhere to the light-transmitting plate and maintains an isolated state, as shown in FIG. 2. .

However, since the prior art of FIGS. 1 and 2 can only laminate a single photocurable resin, it is difficult to manufacture an output product having various physical properties.

Accordingly, Korean Patent Registration No. 10-1628944 has a plurality of material trays each containing different photocurable resins and having a light-transmitting bottom, as shown in FIG. 3, to produce composite material 3D printing. A device is disclosed.

However, the prior art of FIG. 3 has the advantage of being able to produce a composite material molded product by laminating different materials, but does not have a cleaning means, so foreign substances or oil may be present at the interface where different photocurable resins are bonded, resulting in durability. this may deteriorate.

Accordingly, Korean Patent Registration No. 10-2293846 includes a rotation module to quickly form a 3D three-dimensional object using multiple materials as shown in FIG. 4, and a cleaning module for cleaning the cured resin material stacked on the output module. A 3D printer for outputting multi-materials configured to include is disclosed.

However, in the prior art of FIG. 4, since the washing module and the plurality of water tank modules are rotated by the rotating module, and the output module and the light source module are fixed to the main body module, the cleaning or output is determined by the rotation of the rotating module, so that productivity is improved. There is a problem with deterioration.

In addition, the cleaning module has a structure in which the output unit 121 is washed by immersing the output unit 121 in the cleaning unit 171 containing the cleaning liquid. When washing multiple times, the cleaning unit 171 is contaminated, so there is an inconvenience in that the cleaning liquid must be replaced frequently. If not, contaminants may be included in the output, which is undesirable because quality and durability are deteriorated.

An object of the present invention is to solve the problems of the prior art as described above, and a plurality of resin transfer units for transferring and applying a photocurable resin to a transfer film are provided, and a single bed assembly in which the photocurable resin is laminated is provided. , To provide a 3D printer in which the bed assembly is configured to be rotatable so that the photocurable resin can be laminated and molded alternately from a plurality of resin transfer units.

Another object of the present invention is to provide a 3D printer capable of multi-material laminate molding by supplying different photocurable resins to a plurality of resin transfer units.

Another object of the present invention is to provide a washing unit on the lower side of the bed where the photocurable resin is laminated and molded to remove foreign matter and oil from the bottom of the photocurable resin, thereby improving the quality of the output and improving the bonding strength of each layer. 3D It's about providing a printer.

Another object of the present invention is to provide a 3D printer capable of maximizing the cleaning efficiency by cleaning while moving the cleaning gauze soaked in the cleaning solution and fundamentally blocking the inflow of contaminants.

Another object of the present invention is to provide a 3D printer capable of maximizing space efficiency by minimizing the volume by configuring the light irradiation unit to be integrally coupled with the bed assembly to rotate like the bed assembly.

Another object of the present invention is to provide a 3D printer capable of exhibiting optimal cleaning performance according to the type of photocurable resin or working environment by preparing various cleaning solutions in the cleaning unit.

Another object of the present invention is to provide a 3D printer capable of reducing environmental pollution by providing a resin separator on one side of the resin transfer unit to separate the photocurable resin from the transfer film.

The 3D printer according to the present invention includes a frame in which multiple parts are embedded and providing a lamination work area for photocurable resin, and a plurality of resin transfer units fixed to the frame to apply and transfer different photocurable resins to a transfer film, and , A bed assembly that is rotatably installed on the frame and forms an output product by alternately laminating photocurable resin transported by a plurality of resin transfer units on a bed, and a bed installed between a plurality of resin transfer units within a rotation radius of the bed assembly It is characterized in that it is configured to include a washing unit for washing the lower surface of the output stacked on one side of the assembly.

One side of the bed assembly is characterized in that a light irradiator for curing the photocurable resin is integrally coupled and rotates in conjunction.

The washing unit includes a washing container providing a washing space for accommodating and washing the bed, a washing gauze transported through the washing space, and a washing liquid selectively supplying washing liquids having different viscosities to the washing gauze. It is characterized in that it is configured to include a supply unit and a washing liquid replenisher for replenishing washing liquid to the washing liquid supplier.

The washing liquid supplier includes a washing liquid storage tank for storing the washing liquid, a washing liquid applicator for applying a washing liquid to the washing gauze by rolling in the washing liquid storage tank, and a washing liquid applicator and washing gauze by lifting the washing liquid storage tank. It is characterized in that it is configured to include a cleaning lifter that selectively contacts, and a scraper provided to be able to adjust the separation distance to the washing liquid applicator to control the amount of washing liquid applied to the washing gauze.

The resin transfer unit includes a film transfer machine for transporting the transfer film, a resin storage tube for storing the photocurable resin and supplying the photocurable resin through the transfer film, and a coating amount of the photocurable resin installed on one side of the resin storage tube and applied to the transfer film. It is characterized in that it is configured to include a resin applicator for controlling.

It is characterized in that a resin separator for separating the remaining photocurable resin from the transfer film via the bed assembly is provided on one side of the resin transfer unit.

The resin separator includes a blade for separating the remaining photocurable resin in line contact with the transfer film, a resin collector for guiding and storing the separated photocurable resin, and providing heat to the resin collector to cure the photocurable resin. It is characterized in that it is configured to include a heater to limit.

In the present invention, a plurality of resin transfer units for applying and transferring a photocurable resin to a transfer film are provided, and a single bed assembly on which the photocurable resin is laminated is provided, but the bed assembly is configured to be rotatable, so that from a plurality of resin transfer units It is configured to be molded by alternately laminating a photocurable resin.

In addition, since different photocurable resins can be supplied to a plurality of resin transfer units, multi-material laminate molding is possible, and thus, outputs having various physical properties can be manufactured.

In addition, by providing a washing unit below the bed on which the photocurable resin is laminated and molded to remove foreign substances and oil from the bottom of the photocurable resin, the quality of the output and the bonding strength of each layer can be improved.

In addition, the cleaning gauze with the cleaning liquid can be washed while moving to maximize the cleaning efficiency, and the inflow of contaminants can be fundamentally blocked.

In addition, the light irradiation means can be integrally coupled with the bed assembly to maximize space efficiency by minimizing the volume by configuring it to rotate with the bed assembly.

In addition, by preparing various cleaning liquids in the cleaning unit, it is possible to exhibit optimal cleaning performance according to the type of photocurable resin or working environment.

In addition, environmental pollution can be reduced by providing a resin separator at one side of the resin transfer unit to separate the photocurable resin from the transfer film.

1 is a schematic diagram showing the structure of a cartridge for a DLP-type 3D printer disclosed in Korean Patent Registration No. 10-1647799.
Figure 2 is a schematic diagram showing the structure of a high-speed three-dimensional printer disclosed in Korean Patent Publication No. 10-2016-0135551.
Figure 3 is a schematic diagram of a composite material 3D printing device disclosed in Korean Patent Registration No. 10-1628944.
Figure 4 is a schematic diagram of a 3D printer for multi-material output disclosed in Korean Patent Registration No. 10-2293846.
Figure 5 is a perspective view showing the appearance of the 3D printer according to the present invention.
Figure 6 is a perspective view showing the internal structure by removing the cover from the 3D printer according to the present invention.
7 is a perspective view showing a state in which the bed assembly, which is one component of the 3D printer according to the present invention, is rotated.
8 is a perspective view showing detailed configurations of a bed assembly and a washing unit, which are one component in the 3D printer according to the present invention.
9 is a longitudinal sectional view showing detailed configurations of a bed assembly and a washing unit, which are one component in the 3D printer according to the present invention.
10 is an enlarged cross-sectional view of part “A” of FIG. 9 showing a detailed configuration of a washing unit, which is one component of the 3D printer according to the present invention;
11 is an enlarged cross-sectional view showing the action of a washing unit, which is one component in the 3D printer according to the present invention.
Figure 12 is a partially enlarged cross-sectional view showing the action of a resin separator, which is one component in the 3D printer according to the present invention.

Hereinafter, the configuration of the 3D printer 100 according to the present invention will be described with reference to attached FIG. 5 .

5 is a perspective view showing the appearance of the 3D printer 100 according to the present invention.

Prior to this, the terms or words used in this specification and claims should not be interpreted in a conventional and dictionary sense, and the inventor may appropriately define the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents that can replace them at the time of the present application. It should be understood that there may be waters and variations.

As shown in the drawing, the 3D printer 100 according to the present invention is a device for producing an output object (refer to reference numeral P in FIG. Light is irradiated while transferring, and at this time, the bed 131 on which the output material P is stacked is raised and lowered in the upward / downward direction to form a gradually thicker output material P on the lower surface of the bed 131. DLP ( Digital Light Processing) method 3D printer.

The lower exterior of the 3D printer 100 is formed by the frame 102 and the cover 104, and a number of parts are embedded therein.

In addition, a lamination work area is provided on the upper side of the frame 102 so that the lamination output of the output object P is continuously performed. That is, transparent windows 106 are provided in front and behind the frame 102, and the light irradiated upward from the light irradiator 150, which will be described below, passes through the transparent window 106 to cure and cure the photocurable resin. Stacking of the output objects P becomes possible.

In addition, the 3D printer 100 can be formed in the form of a composite material by alternately stacking different photocurable resins while separately storing and supplying them. are placed in parallel

The resin transfer unit 120 is fixedly installed on the frame 102 and transfers different photocurable resins to the transfer film 121, has the same shape and function, and is to be supplied to the transfer film 121. The photocurable resin can be variously changed and applied.

In the embodiment of the present invention, the resin transfer unit 120 is configured as a pair, and a bed assembly 130 is installed between the pair of resin transfer units 120.

The bed assembly 130 is rotatably installed on the frame 102 and alternately laminates the photocurable resin transported by the pair of resin transfer units 120 on the bed 131 to output the output P. , By rotating clockwise or counterclockwise in the state shown in FIG. 5 so that the bed 131 is located on the upper side of the resin transfer unit 120, the output of the output material P is possible.

A washing unit 140 is installed below the bed assembly 130, more specifically, between the pair of resin transfer units 120. The cleaning unit 140 is installed between the resin isounits within the rotation radius of the bed assembly 130 to wash the lower surface of the molded article stacked on the lower surface of the bed 131.

That is, the bed assembly 130 operates to alternately stack the outputs P through the pair of resin transfer units 120, but foreign substances and organic solvents remain on the lower surface of the outputs P during this process can do.

Therefore, before stacking different photocuring resins, the washing unit 140 acts to wash the lower surface of the output material P, thereby blocking the inflow of foreign substances into the output material P and increasing the bonding strength of the interface.

The washing unit 140 rotates by applying the washing liquid to the washing gauze 141, and when the bed 131 descends, it stops moving and contacts the washing gauze 141 with the washing liquid as if stamping, so that the foreign matter is for washing It is removed by the action of moving to the gauze 141.

A detailed configuration of the 3D printer 100 will be described with reference to FIGS. 6 and 7 attached below.

6 is a perspective view showing the internal structure by removing the cover 104 from the 3D printer 100 according to the present invention, and FIG. 7 shows a bed assembly 130, which is one component of the 3D printer 100 according to the present invention ) A perspective view showing a rotated state is shown.

As shown in the drawing, a light irradiator 150 is provided at the center of the lower side of the frame 102 . The light irradiator 150 irradiates light upward to cure the photocurable resin, is integrally coupled with the bed assembly 130, and rotates in conjunction with the rotation of the bed assembly 130 will do

Therefore, the light irradiator 150 rotates in conjunction with the single bed assembly 130 even if a plurality of resin transfer units 120 are provided, so that it is provided as a single bed assembly 130.

A bed assembly 130 is installed at the center of the frame 102 . The bed assembly 130 is installed in a form in which a lower portion is located inside the cover 104 and a portion of the central portion of the frame 102 passes through and is exposed.

And the bed assembly 130 is configured to include a bed 131 in which the output (P) is laminated in the downward direction, the bed 131 is configured to be liftable.

A rotation guide plate 132 is installed below the bed assembly 130 . The rotation guide plate 132 is configured to guide the upper side to rotate while the lower side is fixed, and the rotation guide plate 132 receives rotational force from the rotation motor 134 in the same state as in FIG. 6 and FIG. 7 can rotate together.

In addition, the bed assembly 130 may be rotated clockwise in the state shown in FIG. 6 according to the direction of rotation of the rotary motor 134 .

A support 152 for supporting the above-described light irradiator 150 is coupled to the upper side of the rotation guide plate 132, and when the top rotates with respect to the rotation guide plate 132, the light irradiator 150 rotates as shown in FIG. Together with the support 152, it is possible to rotate in the same direction as the bed 131.

Since the resin transfer unit 120 is provided in the same shape one by one before and after the bed assembly 130, the configuration will be described based on the resin transfer unit 120 located in front of the bed assembly 130.

The resin transfer unit 120 includes a film transfer machine 122 for transferring the transfer film 121, a resin storage container 124 for storing the photocurable resin and supplying the photocurable resin through the transfer film 121, and the resin It is configured to include a resin applicator 126 installed on one side of the storage box 124 to control the amount of photocurable resin applied to the transfer film 121.

The film feeder 122 serves to rewind the film feeder 122 located in the opposite direction while winding and unwinding the transfer film 121 multiple times, and the transfer film 121 to the upper surface of the frame 102. ), the photocurable resin is applied, and the transfer film 121 coated with the photocurable resin is located on the lower side of the bed 131, so that it can be stacked due to the action of the light irradiator 150. .

Accordingly, the resin container 124 is disposed on the path along which the transfer film 121 moves. That is, the resin container 124 is located on the upper side of the frame 102, but the bottom of the space where the photocurable resin is stored is configured to be spaced apart from the upper surface of the frame 102.

After the transfer film 121 is inserted into the spaced gap, the transfer film 121 penetrates in the right direction as shown in FIG. 6 and is then wound around another film transfer machine 122 on the right side.

Therefore, the photocurable resin stored in the resin container 124 may be applied to the upper surface of the transfer film 121 .

Meanwhile, when the photocurable resin is applied to the transfer film 121, thickness control may be required. And it is preferable to increase the quality of the output (P) to be controlled to a certain thickness.

To this end, a resin applicator 126 is installed on the right side of the resin container 124, that is, at the outlet of the transfer film 121.

The resin applicator 126 acts to apply the photocurable resin by generating a gap higher than the thickness of the transfer film 121 when the transfer film 121 escapes through the right side of the resin reservoir 124, , it is configured to be able to control the coating thickness of the photocurable resin by allowing the height dimension of the gap to be varied.

Accordingly, a gap adjuster 128 is installed in the resin applicator 126 to adjust the size of the gap on the right side of the resin container 124. The gap adjuster may be configured to adjust the gap during rotation, and it is of course possible to change and apply various adjustment methods within the range of finely adjusting the size of the gap.

A washing liquid replenisher 143 is provided on the right side of the upper surface of the frame 102 . The washing liquid replenisher 143 stores a large amount of washing liquid and additionally supplies the washing liquid to the washing unit 140. To correspond, a pair of washing liquid replenishers 143 were installed.

A resin separator 190 is installed on the lower right side of the frame 102 . The resin separator 190 passes through the resin applicator 126, the photocurable resin is applied, and the transfer film 121 transported is in contact with the bed 131, and a part of it is laminated and removed, and then the remaining photocurable resin is applied It is a configuration for scraping and storing the photocurable resin from the transferred film 121.

The detailed configuration of the resin separator 190 will be described in detail below, and the detailed configuration of the washing unit 140 will be described with reference to attached FIGS. 8 to 11 .

8 is a perspective view showing the detailed configuration of the bed assembly 130 and the washing unit 140, which are one component in the 3D printer 100 according to the present invention, and FIG. 9 shows the 3D printer 100 according to the present invention A longitudinal cross-sectional view showing the detailed configuration of the bed assembly 130 and the washing unit 140, which are one component, is shown, and FIG. 10 shows details of the washing unit 140, which is one component in the 3D printer 100 according to the present invention. An enlarged cross-sectional view of “A” part of FIG. 9 showing the configuration is shown, and FIG. 11 shows an enlarged cross-sectional view showing the operation of the washing unit 140, which is one component in the 3D printer 100 according to the present invention.

As shown in the drawing, the washing unit 140 uses a washing liquid from the lower side of the bed 131 when the bed 131 of the bed assembly 130 is positioned between the pair of resin transfer units 120 to clean the output material P. It is a configuration that cleans the bottom surface.

To this end, the washing unit 140 includes a washing container (reference numeral 142 in FIG. 10) providing a washing space for accommodating and washing the bed 131, and a washing gauze 141 that is transferred to pass through the washing space and a washing liquid supplier 145 for selectively supplying washing liquids having different viscosities to the washing gauze 141, and a washing liquid replenisher 143 for replenishing washing liquid to the washing liquid supplier 145.

The washing container 142 has a box shape with an open top and a shallow depth having a larger area than the lower surface of the bed 131, and an elastic member E having an elastic restoring force such as a sponge is embedded therein. .

Therefore, as shown in FIG. 10, when the bed 131 is lowered while the washing gauze 141 on the upper surface is stopped, the washing gauze 141 is moved by the elastic member E as shown in FIG. In a state of being elastically supported in an upward direction, it comes into contact with the lower surface of the output material P formed on the lower side of the bed 131 to be washed.

The washing gauze 141 passes through the upper part of the frame 102 by the rotation of the pair of conveying rollers 144 and acts to be wound to the lower side of the frame 102 again, and in the embodiment of the present invention, Paper with a durability of is applied as a material.

The washing gauze 141 is transported in the direction of the arrow shown in FIG. 8, and the washing gauze 141 guided to the upper side of the frame 102 passes through the lower side of the washing container 142 and is guided upward to wash It moves so as to pass through the upper side of the container 142 .

In addition, the washing gauze 141 receives the washing liquid from the washing liquid supplier 145 before reaching the lower side of the washing container 142 and has washing ability.

That is, in the embodiment of the present invention, the washing liquid supplier 145 is configured to provide a washing liquid having viscosity to the washing gauze 141, and the washing liquid may be variously changed to have different viscosities.

In addition, the washing liquid supplier 145 may provide non-viscosity water to the washing gauze 141, and for this purpose, the washing liquid supply unit 145 is provided in plurality.

That is, the washing liquid supplier 145 may be provided with a washing liquid supply 145 spraying a washing liquid having low or no viscosity downward to the upper left side of the washing container 142 and applying the washing liquid to the washing gauze 141 as shown in FIG. 10 . In addition, a plurality of washing liquid suppliers 145 for supplying a washing liquid having viscosity may be provided at the lower right side of the washing container 142 .

More specifically, when the viscosity of the washing liquid is high, it is difficult to apply evenly to the washing gauze 141 by spraying, so it is forcibly applied in the same manner as shown on the right side of FIG. Like the washing liquid supplier 145, it is possible to supply the washing liquid in a spraying manner in a downward direction.

As described above, a detailed configuration of the forced application type washing liquid supply unit 145 located on the right side among various types of washing liquid supply units 145 will be described with reference to FIG. 10 .

As shown in the drawing, the washing liquid supplier 145 includes a washing liquid storage tank 146 for storing the washing liquid, and a washing liquid applicator 147 for applying the washing liquid to the washing gauze 141 by rolling in the washing liquid storage tank 146 ), and a washing lifter 148 that selectively contacts the washing liquid applicator 147 and the washing liquid gauze by lifting the washing liquid storage tank 146, and the washing liquid applicator 147 is provided with an adjustable separation distance It is configured to include a cleaning gauze 141 and a scraper 149 for adjusting the amount of washing liquid applied.

The washing liquid storage tank 146 has an upwardly opened space, and the washing liquid is stored therein. In addition, a washing liquid applicator 147 is rotatably installed inside the washing liquid storage tank 146 . In the embodiment of the present invention, the washing liquid applicator 147 rotates counterclockwise, and the washing liquid having viscosity during rotation goes up along the outer surface of the washing liquid applicator 147 and is buried with the washing gauze 141 located on the upper side. will be able to

The washing liquid storage tank 146 is configured to be able to move up and down by the washing lifter 148 located at the lower side. The washing lifter 148 is configured to allow the washing liquid applicator 147 having the washing liquid applied on the outer surface to come into contact with the washing gauze 141 while rotating. As a result, only one of the two can provide the washing liquid to the washing gauze 141.

A scraper 149 is installed on the inner right side of the washing liquid storage tank 146. The scraper 149 is configured to supply a certain amount by removing the washing liquid as if scraping it off when the washing liquid is excessively applied to the outer surface of the washing liquid applicator 147 due to viscosity.

On the other hand, as the 3D printer 100 laminates the photocurable resin to form the output product P, the remaining photocurable resin may be generated without becoming the output product P.

In addition, if such a photocurable resin is transferred and stored while being attached to the transfer film 121, it may become an environmental pollutant when discarded.

Therefore, the resin separator 190 is further provided in the 3D printer 100.

Hereinafter, a detailed configuration of the resin separator 190 will be described with reference to FIG. 12 attached thereto.

12 is a partially enlarged cross-sectional view showing the action of the resin separator 190, which is one component in the 3D printer 100 according to the present invention.

As shown in the drawing, the resin separator 190 is configured to separate and store the photocurable resin on the outer surface of the transfer film 121 wound by the film transfer unit 122, one for each of the resin transfer units 120. are placed

In addition, the resin separator 190 includes a blade 192 for separating the remaining photocurable resin in line contact with the transfer film 121, a resin collector 194 for guiding and storing the separated photocurable resin, and the resin collector It is configured to include a heater 196 that provides heat to 194 to limit curing of the photocurable resin.

The blade 192 is configured in a plate shape having a larger width than the width of the transfer film 121 and is arranged to make line contact with the outer surface of the transfer film 121 . Therefore, when the transfer film 121 moves to the film transfer machine 122, the blade 192 scrapes off the remaining photocurable resin on the outer surface of the transfer film 121 and receives it to the upper surface to the right, which is the downward inclined direction. be able to guide you.

In addition, a guide groove 193 is recessed on the upper surface of the blade 192 so that the photocurable resin separated from the transfer film 121 can be guided along the slope without falling in the forward/backward direction. The guide groove 193 is formed wide on the upper side and narrows toward the bottom so that it can be connected to the upper side of the resin collector 194.

A resin collector 194 is disposed below the blade 192. The resin collector 194 has a cylindrical shape with an upward opening, and performs a function of receiving and storing photocurable resin that falls while moving in a downward slope to the right along the guide groove 193 of the blade 192.

A heater 196 may be further provided at one side of the resin recovery unit 194. The heater 196 provides heat so that the photocurable resin collected in the resin recovery device 194 does not harden. can be moved to

The scope of the present invention is not limited to the embodiments exemplified above, and many other modifications based on the present invention will be possible for those skilled in the art within the above technical scope.

100. 3D printer 102. Frame
104. cover 106. transparent window
120. Resin transfer unit 121. Transfer film
122. Film transporter 124. Resin storage box
126. Resin coating machine 130. Bed assembly
131. Bed 132. Rotation guide plate
134. Rotation motor 140. Washing unit
141. Gauze for washing 142. Washing container
143. Washing liquid replenisher 144. Transfer roller
145. Washing liquid supply 146. Washing liquid storage tank
147. Washing liquid applicator 148. Washing lifter
149. scraper 150. light irradiator
152. Support 190. Resin Separator
192. Blade 193. Guide groove
194. Resin recovery machine 196. Heater
198. Vent E . elastic member
P. output

Claims (7)

delete delete delete A frame equipped with multiple parts and providing a lamination work area for photocurable resin, a plurality of resin transfer units fixedly installed on the frame and transferring different photocurable resins to the transfer film, and rotatably installed on the frame A bed assembly for forming an output product by alternately stacking the photocurable resin transported by a plurality of resin transfer units on a bed, and a light irradiator integrally coupled to the bed assembly and rotating in conjunction with each other to cure the photocurable resin, the bed assembly A washing unit installed between a plurality of resin transfer units within the rotation radius of the bed to wash the lower surface of the output stacked on the bed, and a resin separator for separating the remaining photocurable resin from the transfer film passing through the bed assembly at one side of the resin transfer unit It is composed of,
The washing unit includes a washing container providing a washing space for accommodating and washing the bed, a washing gauze transported through the washing space and adopting paper, and a washing liquid having a different viscosity to the washing gauze. It is configured to include a washing liquid supplier supplying a washing liquid, an elastic member for elastically supporting the washing gauze inside the washing container, and a washing liquid replenisher for replenishing the washing liquid to the washing liquid supplier,
The washing liquid supplier,
A washing liquid storage tank for storing washing liquid;
A washing liquid applicator for applying the washing liquid to the washing gauze by rolling in the washing liquid storage tank;
A washing lifter for selectively contacting the washing liquid applicator and the washing gauze by lifting the washing liquid storage tank;
It is configured to include a scraper provided to be able to adjust the separation distance to the washing liquid applicator and to control the amount of washing liquid applied to the washing gauze,
The washing gauze rotates in a state in which the washing liquid having viscosity is applied, stops when the bed descends, and when in contact with the lower surface of the output of the bed, in a state in which it is elastically supported in the upward direction by the elastic member, the viscosity of the washing liquid removes foreign substances from the output 3D printer, characterized in that for moving and removing.
The method of claim 4, wherein the resin transfer unit,
A film conveyor for conveying the conveying film;
A resin storage tube that stores photocurable resin and supplies it through a transfer film;
3D printer, characterized in that it comprises a resin applicator installed on one side of the resin reservoir to control the amount of photocurable resin applied to the transfer film.
delete The method of claim 5, wherein the resin separator,
A blade for separating the remaining photocurable resin in line contact with the transfer film;
A resin recovery device for guiding and storing the separated photocurable resin;
3D printer, characterized in that it comprises a heater for limiting the curing of the photocurable resin by providing heat to the resin recovery unit.

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