TWI606917B - Full color 3d printing device - Google Patents

Description

Three-dimensional full color composite printing device

The present invention relates to a three-dimensional full-color composite printing device, and more particularly to a three-dimensional full-color composite printing device suitable for a three-dimensional rapid prototyping machine.

3D Printing molding technology, also known as Rapid Prrototyping (RP) technology, is fast, straightforward and fast, and can accurately transform design ideas into functional prototypes or can be manufactured. Directly used parts or finished products, which can quickly evaluate, modify and test the product design, greatly shortening the product development cycle, thus making 3D printing technology popular.

Today's 3D printing and forming technology is in a booming stage, and the rapid prototyping technology used is also different. The rapid prototyping technology currently used in the industry mainly includes the following technologies: Color-Jet Printing , CJP, or Binder Jetting technology, Fused Deposition Modeling (FDM) technology, Stereo Lithography Apparatus (SLA) technology, UV-curable liquid resin molding (Multi-Jet Modeling, MJM) Technology, or Selective Laser Sintering (SLS) technology, etc., but not limited to this.

However, in the above rapid prototyping technology, except for the color-Jet Printing (CJP, or Binder Jetting) technology, which can produce full-color 3D moldings, the other 3D printing and molding technologies cannot be manufactured. Full-color products, therefore, for the 3D printing technology known as the third industrial revolution, is a lack of great product technology, no real full-color products, meaning that human technology returns to a color performance The era of restrictions is a fatal flaw for the 3D printing industry.

This technical bottleneck is mainly because the 3D printing and forming technology utilizes the base layer stacking technology, that is, as shown in Fig. 1, when the 3D molding A is to be manufactured, the main type is first to analyze the type and structure of the A through the computer. The plurality of laminates are divided into A's, and then the laminates indicated by A' are printed in the axial direction of XY by layer-by-layer printing and stacking by the above-mentioned 3D printing and forming techniques. The layers are stacked again so that they are stacked in the Z direction, and finally a semicircular 3D molding as shown in A is formed. Similarly, if the 3D molding B of the conical flask shape shown in Fig. 2 is to be formed, B is also divided into a plurality of laminations shown by B', and then layer-by-layer printing and stack molding are performed to manufacture. A 3D molding B of a conical shape is obtained. However, in many 3D printing and molding technologies, it is impossible to make full-color 3D products, mainly when stacking layer by layer, lacking a print head corresponding to full-color technology.

For example, the conventional Laser Sintering (SLS) technology mainly involves forming a raw material powder layer by layer in a molding tank, and scanning and sintering the laser beam according to the layered profile. The temperature of the molding raw material powder is raised to a melting point to bond the molding raw material powder into a layered structure, and stacked in layers to form a 3D molding. However, in this SLS technology, since the solid molding raw material powder has only a single color, and in the process of layer-by-layer stacking, there is no device capable of performing full-color printing, so the 3D produced by the SLS technology. The molded product can only maintain the original color of the original solid molding raw material powder, and cannot produce a full-color 3D molded product.

Therefore, as far as the industry of 3D printing technology devices is concerned, the technical bottleneck faced by them is the full color performance problem. Therefore, how to make this fatal prior art defect can be improved is the current 3D printing and molding industry. The main subject that is urgently needed to be solved.

The main purpose of this case is to provide a 3D full-color composite printing device capable of implementing full-color 3D printing, which is applied to laser sintering solid powder molding (SLS) technology to implement full-color 3D printing, which can be solved. At present, many 3D printing and molding technologies cannot create a technical bottleneck for full color.

In order to achieve the above object, one of the more broad aspects of the present invention provides a full-color composite printing device, which is suitable for constructing a three-dimensional shaped object formed by a granular powder, comprising: a plurality of shells having at least a separate housing and a further housing, each of the housings having at least one empty chamber, and the at least one separate housing is separated from the other housings by at least one displacement mechanism for displacement; a light source assembly is disposed Providing a laser light source in the empty chamber of the at least one separation housing; at least one color ink, each of the color inks being respectively accommodated in the at least one empty chamber of the other housing; at least one inkjet wafer, Each of the inkjet wafers is disposed on a bottom surface of the other housing, and each of the inkjet wafers has a plurality of nozzles connected to the at least one color ink and driven by the at least one inkjet wafer to eject the at least one inkjet wafer. a color ink; and a molding tray, which is arranged in the construction groove and driven by a lifting base for up-and-down displacement; wherein the at least one displacement mechanism drives the separation housing to displace the light The source component is irradiated onto the granular powder and sintered along a layered cross-sectional profile of the three-dimensional shaped article to form a single cut layer, and the at least one displacement mechanism drives the other housing to be displaced. The plurality of nozzles of the at least one ink-jet wafer in the other housing eject the at least one color ink onto the single-cut layer, and the multiple-repetitive coating is applied to illuminate and form the granular powder by the light source and print the color The ink is applied to the single-cut layer to construct a stacked layer of the three-dimensional shaped article, and a plurality of the stacked layers are repeatedly formed to finally form a full-color three-dimensional molded product.

1‧‧‧Laser Sintering Solid Powder Forming Machine

2‧‧‧Multifunctional composite printing device

20‧‧‧shell

20a‧‧‧Separate housing

20b‧‧‧Other shells

201, 201a, 201b, 201c‧‧ empty room

21‧‧‧Light source components

22‧‧‧Color ink

23‧‧‧Inkjet wafer

231‧‧‧ bottom

24‧‧‧Molding tray

25, 25a, 25b‧‧‧ displacement mechanism

3‧‧‧Base

31‧‧‧Working platform

32‧‧‧ powder supply tank

33‧‧‧ Construction trough

34‧‧‧Roller

35a, 35b‧‧‧ lifting base

36‧‧‧granular powder

37‧‧‧Molded goods

A, B‧‧3D molding

Layered structure of A', B' ‧‧3D moldings

Figure 1 is a schematic diagram of a stacked layer of a conventional 3D molded article.

Figure 2 is a schematic diagram showing the stacking of another conventional 3D molded article.

Fig. 3 is a schematic view showing a preferred embodiment of a three-dimensional full-color composite printing device of the present invention applied to a laser-sintered solid powder molding machine.

FIG. 4 is a schematic view showing the arrangement of the structural separation housing and other housings on the displacement mechanism of the three-dimensional full-color composite printing device of the present invention.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various aspects, and is not to be construed as a limitation.

Please refer to FIG. 3, which is a schematic diagram of a preferred embodiment of a three-dimensional full-color composite printing device for a laser sintered solid state powder forming (SLA) machine. For example, the laser sintered solid state powder forming (SLA) machine 1 includes a three-dimensional full color composite printing device 2 and a base 3 and the like, wherein the three-dimensional full color composite printing device 2 includes a plurality of shells. 20, a light source assembly 21, at least one color ink 22, at least one inkjet wafer 23 and a molding tray 24, having a working platform 31 on the surface of the base 3, and the base 3 is provided with an in-line powder supply slot 32 and the construction groove 33, the powder supply tank 32 is adjacent to the construction groove 33, wherein the components of the casing 20, the light source assembly 21, the color ink 22, and the inkjet wafer 23 of the three-dimensional full-color composite printing device 2 are correspondingly arranged. Above the working platform 31 of the base 3, the forming tray 24 is disposed in the construction groove 33, and the bottom surface of the powder supply tank 32 and the construction groove 33 is composed of movable lifting bases 35a, 35b, which can be adapted The drive device (not shown) is driven to perform the vertical and downward reciprocating lifting operation, whereby the granular powder 36 provided in the powder supply tank 32 and the construction tank 33 is pushed up and down, for example, when laser sintering is to be performed. Before the solid powder molding (SLS) operation, it is lifted by the base 35a. The lifting operation is performed to push the granular powder 36 in the powder supply tank 32 to a height slightly higher than the working platform 31, and then the horizontal displacement of the roller 34 is performed on the working platform 31, thereby further granulating the powder. 36 is moved into the adjacent construction groove 33. At this time, the lifting base 35b of the construction groove 33 is slightly lowered, so that the multi-three-dimensional full-color composite printing device 2 can follow the granular powder 36 in the construction groove 33. The laser sintered solid powder molding (SLS) operation can effectively regulate the powder supply and molding operation of the granular powder 36 by the reciprocating lifting operation of the powder supply tank 32 and the construction tank 33 independently.

In some embodiments, the granulated powder 36 is at least one of a composite plastic powder, a metal powder, and a composite metal powder, but is not limited thereto.

In this embodiment, the plurality of housings 20 of the three-dimensional full-color composite printing device 2 may be composed of at least one of a metal material, a plastic material, and a plastic coated metal material, and the plural The housing 20 can be divided into at least one separate housing 20a and other housings 20b. The at least one separate housing 20a and the other housing 20b are disposed separately from each other, and each housing 20 includes at least one empty chamber 201.

Taking the embodiment as an example, the plurality of housings 20 are divided into a separate housing 20a and another housing 20b. The separation housing 20a has an empty chamber 201a, and the other housing 20b has two empty chambers 201b, 201c. However, the number of the empty chambers 201 separating the housing 20a from the other housings 20b is not limited thereto.

As shown in FIG. 3, the plurality of housings 20 are configured on the at least one displacement mechanism 25 to perform plane displacement in the XY direction, but not limited thereto, for example, the at least one separation housing 20a and The other housings 20b are separated from the at least one displacement mechanism 25, that is, the separation housing 20a and the other housings 20b are commonly arranged on the same displacement mechanism 25 for plane displacement in the XY direction, but due to the separation The housing 20a and the other housings 20b are separately disposed on the same displacement mechanism 25, so that they are respectively displaced in the XY direction at different positions; or, in another embodiment, as in the first embodiment 4, the separation housing 20a is framed on one displacement mechanism 25a for plane displacement in the XY direction, and the other housing 20b is framed on the other displacement mechanism 25b for plane displacement in the XY direction, that is, The separation housing 20a and the other housings 20b are disposed separately from each other on the two displacement mechanisms 25a, 25b for plane displacement in the XY direction, but the system can be changed according to the actual application situation, and is not limited thereto. .

In addition, in other embodiments, as shown in FIG. 3, the plurality of housings 20 may be further configured on at least one displacement mechanism 25 for XYZ three-direction displacement, in other words, the plurality of housings. 20 increases the displacement in the Z direction as shown, and the at least one separating housing 20a and the other housing 20b are detachably and jointly arranged on the same displacement mechanism 25 for XYZ three-direction displacement, The separation housing 20a and the other housing 20b are separately disposed at different positions of the displacement mechanism 25 for XYZ three-direction displacement, or the separation housing 20a can be separately constructed in a displacement mechanism. 25a is used for XYZ three-direction displacement (as shown in FIG. 4), and the other housing 20b can also be separately configured on the other displacement mechanism 25b for XYZ three-direction displacement (as shown in FIG. 4). In other words, the separation housing 20a and the other housing 20b can be detachably disposed on the same displacement mechanism 25, or can be detachably disposed on different displacement mechanisms 25a and 25b, which can be implemented according to actual conditions. Changes are not allowed in this case.

In the embodiment of the present invention, the light source assembly 21 of the three-dimensional full-color composite printing device 2 is disposed in the empty chamber 201a of the separation housing 20a, and provides a laser light source for constructing the groove 33 in the base 3. The granulated powder 36 is irradiated and sintered along a layered cross-sectional profile of the molded article 37, and the temperature of the granulated powder 36 is raised to a melting point to be solidified.

In this embodiment, the at least one color ink 22 of the three-dimensional full-color composite printing device 2 may be black ink or color ink, but is not limited thereto. Each of the color inks 22 is respectively received in the at least one empty chamber 201b, 201c of the other housing 20b.

The at least one inkjet wafer 23 is correspondingly disposed on a bottom surface 231 of the other casing 20b, and each of the inkjet wafers 23 has a plurality of orifices (not shown) communicating with the at least one color ink 22 and being subjected to The at least one inkjet wafer 23 drives the ejection of the at least one color ink 22; in some embodiments, the inkjet wafer 23 can be, but is not limited to, a thermal bubble inkjet wafer, a piezoelectric inkjet wafer, and a micro At least one of the inkjet wafers 23 manufactured by electromechanical (MEMS) processes.

Taking the embodiment of the present invention as an example, in the empty chamber 201b of the other casing 20b, the black color ink 22 is accommodated, and the corresponding inkjet wafer 23 is a black inkjet wafer 23 having a single flow path. The other empty chamber 201c of the other casing 20b is a color ink 22 for accommodating color, and the inkjet wafer 23 corresponding to the color ink 22 is a color inkjet wafer 23 having three flow paths, but not This is limited. In still other embodiments, the at least one inkjet wafer 23 is two inkjet wafers 23 corresponding to the empty chambers 201b, 201c, respectively, and the two inkjet wafers 23 are two-color inkjets having two flow paths. Wafer 23, but not limited thereto.

In addition, in other embodiments, the other housing 20b of the plurality of housings 20 may also have four empty chambers 201 for accommodating four colors of ink 22, four of which accommodate one color ink. In each of the empty chambers 201, the color inks 22 are outputted from the nozzle holes of the corresponding ink-jet wafers 23, and the number of the corresponding ink-jet wafers 23 is also four, and each of them is a single flow path. Color inkjet wafer 23. Of course, the other housing 20b of the housing 20 may also have six empty chambers 201 for accommodating the six color inks 22, and the color inks 22 of the inkjet wafers 23 corresponding thereto output the color inks 22. The number of the inkjet wafers 23 is also six, and they are all monochromatic inkjet wafers 23 having a single flow path. Even the other housings 20b of the housing 20 can have seven for housing seven. The empty chamber 201 of the color ink 22 outputs the color ink 22 from the corresponding orifice of the inkjet wafer 23, and the number of the corresponding inkjet wafers 23 is also seven, and all of them have a single flow path. Monochromatic inkjet wafer 23. It can be seen that the number, arrangement, and type of the empty chamber 201, the color ink 22, and the inkjet wafer 23 in the other housing 20b can be changed according to actual conditions, and is not limited thereto.

As described above, the molding tray 24 of the three-dimensional full-color composite printing device 2 of the present invention is constructed on the lifting base 35b of the construction groove 33 to be displaced in the up-and-down direction as the lifting base 35b is driven, and The molding tray 24 carries a single cut layer that supports the pulverized powder 36 by the light source of the light source unit 21 to solidify the formed three-dimensional molded product 37.

In the present embodiment, the three-dimensional forming process of the full-color three-dimensional composite printing device 2 of the present invention is to first control the separation housing 20a by the displacement mechanism 25 to perform displacement in the XY direction or the XYZ direction. The position of the separation housing 20a corresponds to the construction groove 33 of the base 3, and the light source assembly 21 installed in the separation housing 20a illuminates the granular powder 36 disposed in the construction groove 33 with a light source, so as to be The position of the molding tray 24 to be formed is solidified, and the displacement mechanism 25 controls the other housing 20b to perform displacement in the XY direction or the XYZ direction, so that the inkjet wafer 23 in the other housing 20b is sprayed. The hole corresponds to the position where the granular powder 36 is formed and solidified, and the nozzle is sprayed with the color ink 22 for a predetermined time to adhere to the sintered shaped granular powder 36 to form a single cut layer of the three-dimensional shaped product 37. And passing through the lifting base 35b disposed under the construction groove 33 to control the molding tray 24 to be displaced downward to the height of the other layer of the single layer to be formed, and the compounding operation is performed to irradiate the sintered forming granular powder 36 with the light source assembly 21 and Printing color ink 2 2, on the formed single-cut layer, to construct a stacked layer of three-dimensional shaped articles 37, and thus irradiating the above-mentioned light source to illuminate the sintered shaped granular powder 36 and the printing color ink 22, thereby constructing a plurality of stacked layers, and finally The three-dimensional molded article 37 is solidified and formed into a full color.

In summary, the three-dimensional full-color composite printing device of the present invention can be widely applied to laser sintered solid powder molding (SLS) technology, and the housing of the three-dimensional full-color composite printing device is driven in the XY direction through a displacement mechanism. Displacement, or displacement in the XYZ three directions, to effectively implement the full-color 3D printing, not only can break through the technical bottleneck of the traditional monochrome 3D molding, increase the color simulation and artistry of the 3D molding, and at the same time Conducive to the promotion of full-color 3D printing technology, and make full-color 3D printing technology more popular.

This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

1‧‧‧Laser Sintering Solid Powder Forming Machine

2‧‧‧Multifunctional composite printing device

20‧‧‧shell

20a‧‧‧Separate housing

20b‧‧‧Other shells

201, 201a, 201b, 201c‧‧ empty room

21‧‧‧Light source components

22‧‧‧Color ink

23‧‧‧Inkjet wafer

231‧‧‧ bottom

24‧‧‧Molding tray

25, 25a, 25b‧‧‧ displacement mechanism

3‧‧‧Base

31‧‧‧Working platform

32‧‧‧ powder supply tank

33‧‧‧ Construction trough

34‧‧‧Roller

35a, 35b‧‧‧ lifting base

36‧‧‧granular powder

37‧‧‧Molded goods

Claims (14)

A three-dimensional full-color composite printing device is suitable for constructing a three-dimensional shaped object formed by forming a granular powder, which comprises:
a plurality of housings having at least one separate housing and one other housing, each of the housings having at least one empty chamber, and the at least one separate housing being separated from the other housings by at least one displacement mechanism for performing Displacement
a light source assembly disposed in the empty chamber of the at least one separate housing to provide a laser light source;
At least one color ink, each of the color inks being respectively accommodated in the at least one empty chamber of the other housing;
At least one inkjet wafer, each of the inkjet wafers being disposed on a bottom surface of the other housing, and each of the inkjet wafers has a plurality of nozzles communicating with the at least one color ink and receiving the at least one inkjet The ink wafer is driven to eject the at least one color ink; and a molding tray is arranged in the construction groove, and is driven by a lifting base to perform upward and downward displacement;
Wherein the at least one displacement mechanism drives the separation housing to displace the light source assembly to the granular powder carried on the molding tray, and sinters along a layered cross-sectional profile of the three-dimensional shaped article to form a a single slit layer, and the at least one displacement mechanism drives the other housings to displace the plurality of ink jets disposed in the other housing to eject the at least one color ink onto the single cut layer Applying the light source to sinter the shaped granular powder and printing the color ink on the single cut layer to construct a stacked layer of the three-dimensional shaped article, and repeatedly constructing the plurality of stacked layers, The final solidification forms a full-color three-dimensional molded product. The three-dimensional full-color composite printing device according to claim 1, wherein the separation housing and the other housings of the plurality of housings are jointly arranged on the same displacement mechanism to perform plane displacement in the XY direction. And the separation housing and the other housing are separately disposed at different positions of the displacement mechanism to perform plane displacement in the XY direction. The three-dimensional full-color composite printing device according to claim 1, wherein the separation housing of the plurality of housings is disposed on one of the displacement mechanisms for performing plane displacement in the XY direction, the other housing Then it is constructed on another displacement mechanism to perform plane displacement in the XY direction. The three-dimensional full-color composite printing device according to claim 1, wherein the separation housing of the plurality of housings and the other housings are collectively constructed on the same displacement mechanism for performing XYZ three directions. Displacement, and the separation housing and the other housing are separated from each other at different positions of the displacement mechanism to perform displacement in three directions of XYZ. The three-dimensional full-color composite printing device according to claim 1, wherein the separation housing of the plurality of housings is disposed on one of the displacement mechanisms for XYZ three-direction displacement, the other housing Then it is constructed on another displacement mechanism to perform the displacement of the XYZ three directions. The three-dimensional full-color composite printing device according to claim 1, wherein the plurality of shells are made of at least one of a metal material, a plastic material and a plastic coated metal material. The three-dimensional full-color composite printing device according to claim 1, wherein the inkjet wafer is a thermal bubble inkjet wafer, a piezoelectric inkjet wafer, and a microelectromechanical process inkjet. At least one of the inkjet wafers of the wafer. The three-dimensional full-color composite printing device according to claim 1, wherein the at least one inkjet wafer is two inkjet wafers, respectively, a color inkjet wafer having three flow channels and a single flow channel. Black inkjet wafer. The three-dimensional full-color composite printing device according to claim 1, wherein the at least one inkjet wafer is two inkjet wafers, respectively being two-color inkjet wafers having two flow paths. The three-dimensional full-color composite printing device according to claim 1, wherein the at least one inkjet wafer is four inkjet wafers, respectively, and four monochromatic inkjet wafers having a single flow channel. The three-dimensional full-color composite printing device according to claim 1, wherein the at least one inkjet wafer is six inkjet wafers, respectively, and is six monochrome inkjet wafers having a single flow channel. The three-dimensional full-color composite printing device according to claim 1, wherein the at least one inkjet wafer is seven inkjet wafers, respectively, and is seven monochrome inkjet wafers having a single flow channel. The three-dimensional full-color composite printing device according to claim 1, wherein the at least one color ink is a four-color ink, and is respectively accommodated in the at least one empty chamber of the casing. The three-dimensional full-color composite printing device according to claim 1, wherein the granular powder is at least one of a composite plastic powder, a metal powder and a composite metal powder.