KR101953085B1 - Three-dimensional Printer with apparatus which create digital hologram - Google Patents

Abstract

The present invention relates to a three-dimensional printer having a digital hologram device, a laser generating device is installed on the sidewall of a three-dimensional printer of a laminated molding method, and projecting a three-dimensional image on the output bed in the laser generating device to predict the output Generating stereoscopic images allows the user to visually check the expected data of the output and has a digital hologram device to provide a technique to more intuitively compare how the output matches the expected data using a side wall camera. By providing a three-dimensional printer, the user of the three-dimensional printer can more intuitively determine the size and error of the model to be printed when the user prints.

Description

Three-dimensional Printer with apparatus which create digital hologram

The present invention relates to a three-dimensional printer having a digital hologram device, and more particularly, by installing a laser generating device on the side wall of a three-dimensional printer of the laminated molding method, the three-dimensional image is projected on the output bed in the laser generating device By creating an expected stereoscopic image of the printout, which allows the user to visually see the printout of the printout and provides a technique to more intuitively compare how the printout matches the predicted data using the sidewall camera. It is a three-dimensional printer with a hologram device.

In the recent prototype development stage, three-dimensional printing technology for printing a three-dimensional shape of an object at a simple and low cost has been spotlighted when manufacturing a prototype or producing a small quantity of a large variety of products.

Three-dimensional printing analyzes the three-dimensional shape of an object through a three-dimensional graphic design program, generates a combination of two-dimensional cross-sectional shape data, and then uses raw materials such as thermoplastics such as ABS and PLA according to the two-dimensional cross-sectional shape data information. It is a technology to realize the three-dimensional shape of the object by forming on the output bed in various ways.

Three-dimensional printing includes FDM (Fused Deposition Modeling) or FFF (Fused Filament Fabrication), which realizes three-dimensional shape by extruding raw materials and sequentially stacking them on the output bed. There are various types such as SLS (Selective Laser Sintering) method that realizes three-dimensional shape, and SLA (Stereolithography Apparatus) method that projects a laser beam into a tank containing a liquid photocurable resin.

The 3D printer using the conventional FDM method or the FFF method, which is a laminated molding method, uses a method of extruding a raw material directly onto an output bed, but the object to be output is directly obtained by photographing it with a 3D scanner or the like. If the output is not outputted, it is not intuitive to know what size the output is until the output is output, and only the size information of the model displayed in the program or the 3D modeling file provided by the computer program or application Only through

In addition, in order to check how much the finished model matches the original model to be pulled out, the user needs to check the model with the eyes or use auxiliary tools such as vernier calipers and scales. There was discomfort.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and is intended to provide a technique for enabling a user of a three-dimensional printer to visually check the expected data of the output.

Another object of the present invention is to provide a technique that can be used to more intuitively compare how the output matches the expected data using the internal side wall camera of the three-dimensional printer.

As a means for solving the above-described technical problem, by installing a laser generating device on the inner side wall of the three-dimensional printer, the three-dimensional image is projected on the output bed in the laser generating device to project the expected three-dimensional image of the output on the top of the output bed Generating provides technology that allows the user to more intuitively see the expected finished shape of the printout.

In addition, it provides a technology that can determine whether the output was originally intended by comparing the image of the three-dimensional image projected using the internal side wall camera and the output of the output is completed and compared with each other.

Using the present invention, when the user of the 3D printer executes the output, the size and error of the model to be output can be more intuitively determined.

1 is a block diagram according to an embodiment of the present invention.
2 is a digital hologram technology processing step according to an embodiment of the present invention.
3 is a schematic diagram of comparison between an output model and a hologram image according to an exemplary embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention.

In addition, when a part is said to "include" or "include" a certain component, it means that it may further include other components, without excluding other components unless otherwise stated.

Hereinafter, the three-dimensional printer method using the lamination method as described above will be described as an example. However, the present invention is not limited to the lamination method, and may be used in other three-dimensional printers in various modified forms.

1 is a block diagram according to an embodiment of the present invention.

1, the three-dimensional printer with a digital hologram device according to the present invention is a three-dimensional printer main body 100, digital hologram processing device (not shown), hologram restoration device 200, camera 220 And a processor, and more particularly, the three-dimensional printer body includes an output nozzle unit (not shown), an output bed unit 110, and a driver 120.

2 is a digital hologram technology processing step according to an embodiment of the present invention.

Referring to FIG. 2, when a computer issues an output command to a three-dimensional printer, first, data of a model to be output from the digital hologram processing apparatus to the three-dimensional printer is loaded, and the computer-generated hologram is generated using the imported model data. Create Since the generation of computer-generated holograms does not play an important role in the components of the present invention, the description is omitted here. The hologram data of the generated output model is sent to the hologram decompression device 200 to prepare a display on the three-dimensional printer.

Before projecting the hologram data of the output model obtained by the above-described process, the driving unit 120 of the 3D printer lowers the output bed unit 110 to the lowest end. When the output bed unit 110 descends to the lowest end, the camera 220 attached to the side wall and the rear and front of the three-dimensional printer stores the image of the output bed unit 110 at the place where each is attached. When image storage is completed, the hologram restoration apparatus 200 projects the hologram data of the above-described output model without changing the size on the output bed unit 110. The user can see the hologram data of the projected output model three-dimensionally from any direction of the three-dimensional printer, and in this process, the user can roughly predict how large and how the model will be printed. . Before the designated projection time of the hologram data of the output model is finished, the hologram data of the output model is stored as the image 310 by using the side wall of the three-dimensional printer and the camera 220 attached to the rear and front. According to the exemplary embodiment, in the case of a three-dimensional printer having no side wall, an auxiliary mechanism capable of fixing the camera 220 by being coupled to the driving unit 120 or the outer frame may be needed to capture the side image.

When the projection time is over, the operation of the hologram restoration apparatus 200 is stopped and thus the hologram data of the output model disappears from the top of the output bed unit 110. Afterwards, the driving unit 120 moves the output bed unit 110 back to an upper standby state, and generates an output model through the operation of a normal three-dimensional printer.

3 is a schematic diagram of comparison between an output model and a hologram image according to an exemplary embodiment of the present invention.

When the output of the model is completed, the driving unit 120 lowers the output bed unit 110 to the lowest end again. When the output bed descends to the bottom end, the side wall and the camera 220 attached to the rear and the front store the image 300 of the output model. At this time, the image data 310 of the three-dimensional hologram previously stored is compared with the outline of the output 320 in the state where the image data 300 of the output model just photographed is crossed (320). Check the output. The printed model may be checked for abnormalities in the output due to malfunctions during printing or poor quality due to the printer's performance limitation. According to an exemplary embodiment, when an error exceeds a certain level during the comparison of the outline, the user may be notified by using a warning phrase in software or light or sound in the 3D printer itself.

In the above, specific embodiments have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and those skilled in the art may make various changes without departing from the spirit of the technical idea of the invention as set forth in the claims below. .

100: three-dimensional printer main body 110: output bed unit
120: drive unit 200: hologram recovery device
210: generated hologram 220: camera
300: image data of the output model 310: image data of the three-dimensional hologram
320: difference between the image data of the three-dimensional hologram and the image data of the output model

Claims (5)

In a three-dimensional printer having a digital hologram device,
A digital hologram processing apparatus which holograms a three-dimensional model to be output;
A hologram restoring apparatus for scanning a hologram completed by the digital hologram processing apparatus on an upper portion of an output bed unit of a 3D printer;
A camera which is restored by the hologram restoring apparatus and which photographs the hologram scanned on the output bed unit before the output of the 3D printer and the model of which the output is completed, and stores the image as image data;
A processor for checking output quality by comparing the image of the model on which the output is completed by the three-dimensional printer with the image of the hologram scanned on the output bed unit before output;
If the difference between the image of the hologram scanned on the output bed unit before the output and the image of the image of the output complete model is significant, the processor checks the output quality and provides an error message that can be notified by light or sound. Three-dimensional printer with a digital hologram device comprising a.





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