Multipurpose planar and three-dimensional multi-material mixed printing device

Abstract

According to the multi-purpose planar and three-dimensional multi-material mixed printing device, the axial driving mechanism drives the feeding mechanism and the optical printing system to correspondingly move relative to the forming platform, so that planar printing and / or three-dimensional printing can be carried out according to printing requirements, and the practicability is high; in addition, the two feeding modules are correspondingly arranged on the two sides of the optical printing system, and the printing efficiency can be improved.

Description

[Technical field]

[0001] The present invention relates to the technical field of additive manufacturing, and in particular to a multi-purpose planar and three-dimensional multi-material mixed printing device. [Background technology]

[0002] 3D printing technology is based on a computer three-dimensional design model, which is decomposed into several layers of plane slices by software. Then, the CNC molding system uses laser beams, hot melt nozzles and other methods to stack and bond powdered, liquid or filamentary metals, ceramics, plastics, cell tissues and other materials layer by layer, and finally stack and mold to produce physical products. The 3D printer is the core equipment of 3D printing. It is a complex mechatronics system that integrates machinery, control and computer technology. It is mainly composed of subsystems such as high-precision mechanical systems, CNC systems, injection systems and molding environments. In contrast to the "subtractive manufacturing technology" of traditional manufacturing, 3D printing follows the principle of addition, that is, the principle of "layer-by-layer stacking". It no longer requires traditional tools, fixtures and machine tools, and can realize the integration of design and manufacturing, thereby greatly reducing production costs and shortening processing cycles, improving the utilization rate of raw materials and energy, reducing the impact on the environment, and realizing the design and manufacturing of complex structure products. The density of molded products is also more uniform.

[0003] Different types of rapid prototyping systems have different forming principles and system characteristics due to the different forming materials used. However, they are all based on the principle of discrete stacking, that is, layered manufacturing and layer-by-layer stacking. The basic process is: first design a three-dimensional model using computer software, then discretize the three-dimensional digital model into surfaces, lines and points, and then stack them in layers through 3D printing equipment, and finally turn it into a three-dimensional physical object.

[0004] With the rise of 3D printing technology, 3D printing is used in more and more places. Due to the limitations of existing printing devices, only one material can be printed at a time. In particular, when a printed object consists of multiple color materials, it is often necessary to print in steps, which has a great impact on the connection and printing speed.

[0005] In addition, in the field of two-dimensional printing, the main emphasis is on printing format, printing materials and printing efficiency, and it is difficult to produce three-dimensional patterns. Inkjet printing is usually used more often, which causes limitations in printing materials. In the field of three-dimensional printing, it is mainly limited by the singleness of printing materials.

[0006] Therefore, the present invention is studied and proposed in view of the above problems. [Summary of the invention]

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a multi-purpose two-dimensional, three-dimensional multi-material mixed printing device, which drives the feeding mechanism and the optical printing system to move correspondingly relative to the forming platform through an axial driving mechanism, that is, it can perform two-dimensional printing and / or three-dimensional printing according to printing requirements, and has high practicality; in addition, by arranging two feeding modules on both sides of the optical printing system respectively, the printing efficiency can be improved.

[0008] The present invention is achieved through the following technical solutions:

[0009] A multi-purpose two-dimensional and three-dimensional multi-material mixed printing device, comprising:

[0010] frame;

[0011] A molding platform 1, wherein the molding platform 1 is arranged on a frame;

[0012] A feeding mechanism 2, the feeding mechanism 2 comprising at least two groups of feeding modules 21 movable relative to the forming platform 1 and spaced apart along the X-axis or Y-axis direction of the frame;

[0013] An optical printing system 3, the optical printing system 3 is movable relative to the molding platform 1 and is located between two adjacent feeding modules 21;

[0014] An axial drive mechanism includes an X-axis drive mechanism 4 for driving the feeding mechanism 2 and the optical printing system 3 to move along the X-axis direction of the frame, a Y-axis drive mechanism 5 for driving the feeding mechanism 2 and the optical printing system 3 to move along the Y-axis direction of the frame, and a Z-axis drive mechanism 6 for driving the feeding mechanism 2 and the optical printing system 3 to move along the Z-axis direction of the frame.

[0015] As described above, in the multi-purpose two-dimensional and three-dimensional multi-material mixed printing device, the frame is also provided with a distance sensor 7 for measuring the thickness of the printing material layer laid on the forming platform 1.

[0016] As described above, in the multi-purpose two-dimensional and three-dimensional multi-material mixed printing device, a lifting drive mechanism 22 is provided between each of the feeding modules 21 and the frame.

[0017] As described above, in a multi-purpose two-dimensional and three-dimensional multi-material mixed printing device, the feeding module 21 includes a feeding bin 211, a feeding port 212 is provided at the lower end of the feeding bin 211, and at least one feeding channel 213 for conveying printing materials and connected to the feeding port 212 is provided on the feeding bin 211.

[0018] As described above, in the multi-purpose two-dimensional and three-dimensional multi-material mixed printing device, the feed bin 211 is provided with a scraper 214 for flattening the printing material laid on the molding platform 1 by the feed mechanism 2 .

[0019] As described above, a multi-purpose flat and three-dimensional multi-material mixed printing device, the Y-axis driving mechanism 5 includes a Y-axis sliding seat 52 that can slide along the Y-axis direction of the frame, and a Y-axis linear driving motor 51 for driving the Y-axis sliding seat 52 to slide along the Y-axis direction of the frame is provided between the Y-axis sliding seat 52 and the frame, and the stator of the Y-axis linear driving motor 51 is laid on the frame along the Y-axis direction of the frame, and the mover of the Y-axis linear driving motor 51 is relatively fixedly connected to the Y-axis sliding seat 52; the X-axis driving mechanism 4 is arranged on the Y-axis sliding seat 52, and the Z-axis driving mechanism 6 is configured to be driven by the X-axis driving mechanism 4.

[0020] As described above, a multi-purpose flat and three-dimensional multi-material mixed printing device is provided with a Y-axis guiding mechanism 8 between the Y-axis sliding seat 52 and the frame, and the Y-axis guiding mechanism 8 includes a Y-axis guide rail 81 provided on the frame and extending along the Y-axis direction of the frame, and a Y-axis slider 82 provided on the Y-axis sliding seat 52 and slidingly matched with the Y-axis guide rail 81.

[0021] As described above, a multi-purpose flat and three-dimensional multi-material mixed printing device is provided with a buffer mechanism 9 between the corresponding end of the Y-axis sliding seat 52 and the frame, and the buffer mechanism 9 includes a buffer provided on the frame and used for buffering cooperation with the corresponding end of the Y-axis sliding seat 52.

[0022] As described above, a multi-purpose flat and three-dimensional multi-material mixed printing device, the Z-axis driving mechanism 6 includes a Z-axis substrate 64 that can move along the Z-axis direction of the frame and a Z-axis driving motor 61 that is relatively fixedly connected to the driving end of the X-axis driving mechanism 4, the motor shaft of the Z-axis driving motor 61 is co-movably connected with a Z-axis transmission screw 62, and a Z-axis slider 63 is slidably provided on the Z-axis transmission screw 62, and the Z-axis slider 63 is relatively fixedly connected to the Z-axis substrate 64; the feeding mechanism 2 and the optical printing system 3 are located on the Z-axis substrate 64.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. During printing, the X-axis driving mechanism and the Y-axis driving mechanism cooperate to drive the feeding mechanism and the optical printing system to move accordingly, thereby realizing plane printing on the forming platform. The X-axis driving mechanism, the Y-axis driving mechanism and the Z-axis driving mechanism drive the feeding mechanism and the optical printing system to move accordingly, thereby realizing three-dimensional printing on the forming platform. That is, the present invention can perform plane printing and / or three-dimensional printing according to printing requirements, and realize the functions of two-dimensional and three-dimensional printing at the same time, and has the characteristics of high practicality and convenient printing.

[0025] 2. The present invention arranges two feeding modules at intervals along the X-axis direction of the frame, and places the optical printing system between the two feeding modules. When printing is moved from the left side of the molding platform to the right side, the feeding module on the right side lays the printing material on the molding platform, and then the optical printing system irradiates the printing material on the molding platform accordingly to obtain a 2D solidified layer; when printing is moved from the right side of the molding platform to the left side, the feeding module on the left side lays the printing material on the molding platform, and then the optical printing system irradiates the printing material on the molding platform accordingly to obtain a 2D solidified layer, thereby improving printing efficiency.

[0026] 3. In order to ensure printing accuracy and printing quality, the frame is also provided with a distance sensor for measuring the thickness of the printing material layer laid on the forming platform.

Brief Description of the Drawings

[0027] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0028] Figure 1 It is one of the three-dimensional diagrams of the present invention.

[0029] Figure 2 It is the second stereogram of the present invention.

[0030] Figure 3 It is the front view of the present invention.

[0031] Figure 4 It is a three-dimensional diagram of the Z-axis driving mechanism in the present invention.

[0032] Figure 5 It is an exploded view of the Z-axis driving mechanism in the present invention.

[0033] Figure 6 It is a three-dimensional diagram of the feeding module in the present invention.

[0034] Figure 7 It is a schematic diagram of the printing forming process of the present invention. [Specific implementation method]

[0035] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] like Figure 1-7 As shown, the present invention provides a multi-purpose two-dimensional and three-dimensional multi-material mixed printing device, comprising:

[0037] frame;

[0038] A molding platform 1, wherein the molding platform 1 is arranged on a frame;

[0039] A feeding mechanism 2, the feeding mechanism 2 comprising at least two groups of feeding modules 21 movable relative to the forming platform 1 and spaced apart along the X-axis or Y-axis direction of the frame;

[0040] An optical printing system 3, the optical printing system 3 is movable relative to the molding platform 1 and is located between two adjacent feeding modules 21;

[0041] Axial drive mechanism, the axial drive mechanism includes an X-axis drive mechanism 4 for driving the feeding mechanism 2 and the optical printing system 3 to move along the X-axis direction of the frame, a Y-axis drive mechanism 5 for driving the feeding mechanism 2 and the optical printing system 3 to move along the Y-axis direction of the frame, and a Z-axis drive mechanism 6 for driving the feeding mechanism 2 and the optical printing system 3 to move along the Z-axis direction of the frame. During printing, the X-axis drive mechanism and the Y-axis drive mechanism cooperate to drive the feeding mechanism and the optical printing system to move accordingly, so that ultra-large plane printing can be realized on the molding platform. The X-axis drive mechanism, the Y-axis drive mechanism and the Z-axis drive mechanism drive the feeding mechanism and the optical printing system to move accordingly, so that three-dimensional printing can be realized on the molding platform. That is, the present invention can perform plane printing and / or three-dimensional printing according to printing requirements, and realize the functions of two-dimensional and three-dimensional printing at the same time, and has the characteristics of high practicality and convenient printing; in addition, the printing molding method of the present invention that drives the feeding mechanism 2 and the optical printing system 3 to move relative to the molding platform 1 through the axial drive mechanism can ensure that the solidified layer is firmly bonded to the molding platform, so that it has the characteristics of molding large-size 3D printing equipment.

[0042] The present invention arranges two feeding modules at intervals along the X-axis direction of the frame, and places the optical printing system between the two feeding modules. When printing is moved from the left side of the molding platform to the right side thereof, the feeding module on the right side lays the printing material on the molding platform, and then the optical printing system irradiates the printing material on the molding platform accordingly to obtain a 2D solidified layer; when printing is moved from the right side of the molding platform to the left side thereof, the feeding module on the left side lays the printing material on the molding platform, and then the optical printing system irradiates the printing material on the molding platform accordingly to obtain a 2D solidified layer, thereby improving printing efficiency.

[0043] Furthermore, the optical printing system 3 includes a light source, a light modulation module 31 for converting graphic information emitted by the light source into a light pattern, and an imaging lens assembly 32 for focusing the light pattern of the light modulation module 31 onto a molding platform; the imaging lens assembly can enhance the pixel points of the light pattern of the light modulation module to improve the high contrast of each layer of the image during 3D printing, thereby improving the overall 3D printing quality and success rate.

[0044] In order to improve printing efficiency and printing quality, the light modulation module is a light modulation device such as DLP or LCD or OLED or LCOS or MicroLED, etc. The imaging lens assembly is an imaging focusing lens, etc.

[0045] like Figure 1-5 As shown, in order to ensure printing accuracy, the frame is also provided with a distance sensor 7 for measuring the thickness of the printing material layer laid on the forming platform 1. In this embodiment, the distance sensor 7, the optical printing system 3 and the feeding module 21 are all located on the Z-axis substrate 64. During printing, the distance sensor 7 measures the thickness of the printing material laid on the forming platform, and the Z-axis driving mechanism 6 performs real-time follow-up printing according to the distance value read by the distance sensor 7, ensuring high precision of the single-layer printing layer.

[0046] like Figure 4 , 5 As shown, a lifting drive mechanism 22 is provided between each of the feeding modules 21 and the frame. Figure 7 As shown, when printing from the left side of the molding platform to the right side, the feeding module on the right side lays the printing material on the molding platform, and then the optical printing system irradiates the printing material on the molding platform accordingly to obtain a 2D solidified layer (the feeding module on the left side is lifted by the lifting drive mechanism 22); when printing from the right side of the molding platform to the left side, the feeding module on the left side lays the printing material on the molding platform, and then the optical printing system irradiates the printing material on the molding platform accordingly to obtain a 2D solidified layer (the feeding module on the right side is lifted by the lifting drive mechanism 22), avoiding interference and affecting printing, and ensuring normal printing. Preferably, the lifting drive mechanism 22 is a lifting drive cylinder.

[0047] A feeding guide mechanism is provided between each of the feeding modules 21 and the frame, and the feeding guide mechanism includes a feeding guide rod which is arranged on the Z-axis substrate 64 of the frame and extends along the Z-axis direction of the frame, and a feeding sleeve which is provided on the feeding bin body 211 of the feeding module 21 and can be slidably mounted on the feeding guide rod, which is not marked in the figure.

[0048] like Figure 4-6 As shown, the feeding module 21 includes a feeding bin 211, a feeding port 212 is provided at the lower end of the feeding bin 211, and at least one feeding channel 213 for conveying printing materials and communicating with the feeding port 212 is provided on the feeding bin 211. In this embodiment, there are three feeding channels 213, and the conveying ports of the three feeding channels 213 are all communicated with the feeding port 212, or the conveying ports of the three feeding channels 213 are independent of each other. Among them, the three feeding channels 213 can convey the same printing material, and can also convey different printing materials.

[0049] like Figure 4-6As shown, in order to improve the printing quality, the feed bin 211 is provided with a scraper 214 for flattening the printing material laid on the molding platform 1 by the feed mechanism 2. Figure 6 As shown, a mounting slot for mounting a scraper 214 is provided on the side wall of the feed bin body 211, and an adjustment lock hole is provided on the scraper 214. A locking screw is passed through the adjustment lock hole for locking the scraper 214 relative to the feed bin body 211. In this embodiment, the scraper 214 can be adjusted to slide relative to the mounting slot by tightening the locking screw.

[0050] like Figure 1 , 2 As shown, the Y-axis driving mechanism 5 includes a Y-axis sliding seat 52 that can slide along the Y-axis direction of the frame, and a Y-axis linear driving motor 51 is provided between the Y-axis sliding seat 52 and the frame for driving the Y-axis sliding seat 52 to slide along the Y-axis direction of the frame, and the stator of the Y-axis linear driving motor 51 is laid on the frame along the Y-axis direction of the frame, and the mover of the Y-axis linear driving motor 51 is relatively fixedly connected to the Y-axis sliding seat 52; the X-axis driving mechanism 4 is provided on the Y-axis sliding seat 52, and the Z-axis driving mechanism 6 is configured to be driven by the X-axis driving mechanism 4. The Y-axis linear driving motor 51 used in this embodiment has the characteristics of high precision, high acceleration, high speed, high responsiveness, low noise, high stability, and low wear. Among them, the X-axis driving mechanism 4 is the same as the Y-axis driving mechanism 5, and will not be repeated here.

[0051] like Figure 1 , 2 As shown, a Y-axis guiding mechanism 8 is provided between the Y-axis sliding seat 52 and the frame. The Y-axis guiding mechanism 8 includes a Y-axis guide rail 81 provided on the frame and extending along the Y-axis direction of the frame, and a Y-axis slider 82 provided on the Y-axis sliding seat 52 and slidingly cooperating with the Y-axis guide rail 81, which can make the Y-axis sliding seat 52 slide more stably and smoothly, and avoid shaking that affects the printing effect.

[0052] like Figure 1 , 2 As shown, a buffer mechanism 9 is provided between the corresponding end of the Y-axis sliding seat 52 and the frame, and the buffer mechanism 9 includes a buffer provided on the frame and used for buffering with the corresponding end of the Y-axis sliding seat 52, which can buffer the Y-axis sliding seat 52, avoid the corresponding end of the Y-axis sliding seat 52 from being damaged by direct rigid collision with the frame, and extend the service life. In the present invention, an X-axis guide mechanism and a buffer assembly are provided between the X-axis driving mechanism 4 and the frame, respectively, wherein the X-axis guide mechanism is the same as the Y-axis guide mechanism 8, and the buffer assembly is the same as the buffer mechanism 9, which will not be repeated here.

[0053] like Figure 1-5As shown, in order to improve the printing efficiency, the Z-axis driving mechanism 6 includes a Z-axis base plate 64 that can move along the Z-axis direction of the frame and a Z-axis driving motor 61 that is relatively fixedly connected to the driving end of the X-axis driving mechanism 4. The motor shaft of the Z-axis driving motor 61 is co-movably connected with a Z-axis transmission screw 62, and a Z-axis slider 63 is slidably provided on the Z-axis transmission screw 62. The Z-axis slider 63 is relatively fixedly connected to the Z-axis base plate 64; the feeding mechanism 2 and the optical printing system 3 are located on the Z-axis base plate 64. When it is necessary to adjust the spacing between the feeding port 212, the optical printing system 3 and the molding platform 1, the forward or reverse rotation of the Z-axis driving motor 61 can be controlled to drive the Z-axis slider 63 to drive the Z-axis base plate 64 to rise or fall accordingly along the Z-axis direction of the frame through the Z-axis transmission screw 62, and the adjustment is convenient, fast and stable.

[0054] The frame is also provided with a molding chamber, and the molding platform 1 is located inside the molding chamber to prevent the 3D printed components on the molding platform from collapsing, which is not indicated in the figure.

Claims

1. A multi-purpose plane, three-dimensional multi-material mixed printing device, characterized in that include: frame; A molding platform (1), wherein the molding platform (1) is arranged on a frame; A feeding mechanism (2), the feeding mechanism (2) comprising at least two groups of feeding modules (21) movable relative to the forming platform (1) and spaced apart along the X-axis or Y-axis direction of the frame; An optical printing system (3), the optical printing system (3) being movable relative to the molding platform (1) and being located between two adjacent feeding modules (21); An axial drive mechanism, the axial drive mechanism comprising an X-axis drive mechanism (4) for driving the feeding mechanism (2) and the optical printing system (3) to move along the X-axis direction of the frame, a Y-axis drive mechanism (5) for driving the feeding mechanism (2) and the optical printing system (3) to move along the Y-axis direction of the frame, and a Z-axis drive mechanism (6) for driving the feeding mechanism (2) and the optical printing system (3) to move along the Z-axis direction of the frame.

2. According to claim 1, a multi-purpose two-dimensional and three-dimensional multi-material mixed printing device is characterized in that The frame is also provided with a distance sensor (7) for measuring the thickness of a layer of printing material laid on the forming platform (1).

3. According to claim 1, a multi-purpose two-dimensional and three-dimensional multi-material mixed printing device is characterized in that A lifting drive mechanism (22) is provided between each of the feeding modules (21) and the frame.

4. According to claim 1, a multi-purpose two-dimensional and three-dimensional multi-material mixed printing device is characterized in that The material supply module (21) comprises a material supply bin (211), a material supply port (212) being provided at the lower end of the material supply bin (211), and at least one material supply channel (213) for conveying printing materials and communicating with the material supply port (212) being provided on the material supply bin (211).

5. According to claim 4, a multi-purpose two-dimensional and three-dimensional multi-material mixed printing device is characterized in that The material supply bin (211) is provided with a scraper (214) for flattening the printing material laid on the molding platform (1) by the material supply mechanism (2).

6. A multi-purpose two-dimensional, three-dimensional, multi-material mixed printing device according to any one of claims 1 to 5, characterized in that The Y-axis driving mechanism (5) comprises a Y-axis sliding seat (52) capable of sliding along the Y-axis direction of the frame, a Y-axis linear driving motor (51) for driving the Y-axis sliding seat (52) to slide along the Y-axis direction of the frame is arranged between the Y-axis sliding seat (52) and the frame, the stator of the Y-axis linear driving motor (51) is laid on the frame along the Y-axis direction of the frame, and the mover of the Y-axis linear driving motor (51) is relatively fixedly connected to the Y-axis sliding seat (52); the X-axis driving mechanism (4) is arranged on the Y-axis sliding seat (52), and the Z-axis driving mechanism (6) is configured to be driven by the X-axis driving mechanism (4).

7. A multi-purpose two-dimensional and three-dimensional multi-material mixed printing device according to claim 6, characterized in that A Y-axis guide mechanism (8) is provided between the Y-axis sliding seat (52) and the frame, and the Y-axis guide mechanism (8) comprises a Y-axis guide rail (81) provided on the frame and extending along the Y-axis direction of the frame, and a Y-axis slider (82) provided on the Y-axis sliding seat (52) and guidingly slidingly matched with the Y-axis guide rail (81).

8. The multi-purpose two-dimensional and three-dimensional multi-material mixed printing device according to claim 6, characterized in that A buffer mechanism (9) is provided between the corresponding end of the Y-axis sliding seat (52) and the frame, and the buffer mechanism (9) comprises a buffer provided on the frame and used for buffering cooperation with the corresponding end of the Y-axis sliding seat (52).

9. A multi-purpose two-dimensional and three-dimensional multi-material mixed printing device according to any one of claims 1 to 6, characterized in that The Z-axis driving mechanism (6) comprises a Z-axis substrate (64) that can move along the Z-axis direction of the frame and a Z-axis driving motor (61) that is relatively fixedly connected to the driving end of the X-axis driving mechanism (4); the motor shaft of the Z-axis driving motor (61) is co-movably connected to a Z-axis transmission screw (62); a Z-axis slider (63) is slidably provided on the Z-axis transmission screw (62); and the Z-axis slider (63) is relatively fixedly connected to the Z-axis substrate (64); the feeding mechanism (2) and the optical printing system (3) are located on the Z-axis substrate (64).

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