Multi-material tablet 3D printing device

Abstract

The utility model relates to a multi-material tablet 3D (three-dimensional) printing device, which belongs to the technical field of medical instruments and comprises a rack, a forming system, a powder supply system and a liquid spraying system, a fixing plate is fixed in the rack, and a long-strip hole is formed in the fixing plate; the forming system slides in the long-strip-shaped hole along the X axis. The powder supply system comprises a supporting frame and a plurality of powder supply hoppers, and the supporting frame is fixed to the fixing plate. The plurality of powder supply hoppers are fixed on the support frame at intervals along the X-axis direction, and powder leakage holes of the powder supply hoppers can be respectively arranged opposite to the plurality of powder accommodating holes; the liquid spraying system comprises a Y-axis driving mechanism and a plurality of sprayers, the Y-axis driving mechanism is fixed on the rack, and the driving end of the Y-axis driving mechanism reciprocates in the Y-axis direction; the ejectors are fixed to the driving end of the Y-axis driving mechanism at intervals. The 3D printer breaks through the design constraint of single-proportion medicine printing of a traditional 3D printer, is matched with a brand-new medicine spraying and bonding technology, can flexibly proportion various materials, and improves the forming efficiency and the forming effect of tablets.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a multi-material tablet 3D printing device. Background Art

[0002] The tablet 3D printing device is a device that uses 3D printing technology to prepare tablets. It can personalize drugs of different types, dosages, and properties according to the needs of different patients, thereby improving the accuracy and efficacy of drug treatment. The advantage of this technology is that the dosage control of drugs can become very precise. With the continuous development and popularization of 3D printing technology, the application of tablet 3D printing devices in the medical field will become more and more extensive.

[0003] Currently, traditional tablet 3D printing devices primarily consist of a printing system, a powder supply system, a powder spreading system, a Z-axis control system, a fluid control system, a first drive unit, and a second drive unit. The first and second drive units share a set of tracks; the tracks are mounted on the printing platform via a support structure, with the printing surface located below the tracks. The first drive unit drives the print head assembly along the tracks, while the second drive unit drives the powder supply and spreading mechanism along the tracks. In actual pharmaceutical manufacturing, the powder supply and spreading process is controllable, with the print head assembly in the "upper position." During printing, the print head assembly moves down to the "lower position," which improves powder utilization, reduces the risk of nozzle contamination, and increases the lifespan of the print head and tablet printing efficiency.

[0004] However, the tablets printed by the print head of the above-mentioned 3D printing device have a single material ratio and cannot be flexibly adjusted. It is not suitable for small-batch production of complex tablets with multiple materials and multiple liquids, and cannot meet the preparation requirements of most personalized drugs on the market.

[0005] Therefore, how to design a low-cost, low-waste, precise and flexible multi-material tablet 3D printing device is an urgent problem that technicians in this field need to solve. Utility Model Content

[0006] The utility model provides a multi-material tablet 3D printing device, which solves the technical problem that the existing drug 3D printer has a single printing ratio and cannot be flexibly adjusted.

[0007] The utility model solves the above technical problems with the following technical solutions: a multi-material tablet 3D printing device, comprising: a frame, a molding system, a powder supply system and a liquid spraying system.

[0008] The coronal axis of the frame is the X-axis, the sagittal axis is the Y-axis, and the vertical axis is the Z-axis. A fixed plate is fixed inside the frame and the fixed plate is provided with long holes arranged along the X-axis direction; the forming system includes an X-axis drive mechanism, a slide, a forming block, a Z-axis drive mechanism, a lifting plate and a plurality of lifting columns. The X-axis drive mechanism is fixed to the fixed plate and its driving end reciprocates along the X-axis direction; the slide slides in the long holes along the X-axis direction and is fixed to the driving end of the X-axis drive mechanism; the forming block is placed on the top of the slide and a lifting groove is provided on its bottom surface, and a plurality of powder holes are provided at the bottom of the lifting groove; the Z-axis drive mechanism is fixed on the slide and its driving end reciprocates along the Z-axis direction movement; the lifting plate slides back and forth in the lifting groove along the Z-axis direction and its bottom end can press against the driving end of the Z-axis driving mechanism; the plurality of lifting columns slide in the plurality of powder holding holes respectively and their bottom ends are fixed at intervals on the top surface of the lifting plate; the powder supply system includes a support frame and a plurality of powder supply hoppers, and the support frame is fixed on the fixed plate; the plurality of powder supply hoppers are fixed on the support frame at intervals along the X-axis direction and their powder leakage holes can be arranged opposite to the plurality of powder holding holes respectively; the liquid spraying system includes a Y-axis driving mechanism and a plurality of injectors, the Y-axis driving mechanism is fixed on the frame and its driving end reciprocates along the Y-axis direction; the plurality of injectors are fixed at intervals on the driving end of the Y-axis driving mechanism.

[0009] The beneficial effects of the present invention are as follows: breaking through the design constraints of traditional 3D printers for printing medicines in a single ratio, matching a new medicine jetting and bonding technology, firstly using a Z-axis drive mechanism to drive the lifting plate to slide in the lifting slot along the Z-axis direction, since the bottom ends of multiple lifting columns are fixed on the lifting plate at intervals and move in the powder containing holes, the powder capacity can be accurately reserved in the powder containing holes; then using an X-axis drive mechanism to drive the slide to slide along the X-axis direction, since multiple powder supply hoppers are arranged in sequence along the X-axis direction, a variety of different medicine powders can be accurately injected into the powder containing holes of the forming block in sequence, and a variety of medicine powders can be flexibly proportioned to improve the proportioning accuracy of the medicine powder; finally, using a Y-axis drive mechanism to drive multiple injectors to be arranged along the Y-axis direction, respectively spraying liquid medicine into the multiple powder containing holes filled with medicine powder, forming viscous tablets in the multiple powder containing holes.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, an X-axis slider and an X-axis screw hole are fixed on the slide, and the axial direction of the X-axis screw hole is arranged squarely along the X-axis; the X-axis drive mechanism includes an X-axis motor, an X-axis guide rail and an X-axis screw, and the X-axis guide rail is fixed to the fixed plate along the X-axis; the X-axis slider slides on the X-axis guide rail; the X-axis motor is fixed to the fixed plate and its output shaft is arranged along the X-axis direction; the X-axis screw is the driving end of the X-axis drive mechanism, the X-axis screw is arranged along the X-axis direction and fixed on the output shaft of the X-axis motor, and the X-axis screw is threadedly connected to the X-axis screw hole.

[0012] A further beneficial effect of the above method is that by using the X-axis screw threadedly connected to the X-axis screw hole, the position of the slide can be accurately changed along the X-axis direction, so that multiple powder supply hoppers are respectively corresponding to multiple forming blocks, thereby improving the flexibility of material ratio.

[0013] Furthermore, the Z-axis drive mechanism includes a fixed frame, a Z-axis motor, a lifting frame and a top plate, the fixed frame is fixed on the slide; the Z-axis motor is fixed on the fixed frame, the output shaft of the Z-axis motor is arranged along the Z-axis direction and is provided with a thread; the lifting frame slides along the Z-axis direction on the fixed frame and a Z-axis nut is fixed thereon, and the Z-axis nut is threadedly connected to the output shaft of the Z-axis motor; the top plate is the driving end of the Z-axis drive mechanism and is fixed on the lifting frame, the top plate movably extends into the lifting slot and can touch the bottom end of the lifting plate.

[0014] A further beneficial effect of the above method is that the output shaft of the Z-axis motor is threadedly connected to the Z-axis nut of the lifting frame, so that the moving distance of the top plate along the Z-axis direction can be accurately adjusted, and the powder capacity of multiple powder holes can be accurately controlled.

[0015] Furthermore, the top plate and the lifting plate are both made of magnetic materials.

[0016] A further beneficial effect of the above method is that the use of magnetic materials to manufacture the top plate and the lifting plate can reduce the gap between the top plate and the lifting plate and improve the stability of the lifting plate.

[0017] Furthermore, a limiting ring is fixed to the forming block at a notch corresponding to the lifting slot, and a top end of the limiting ring can contact the bottom surface of the lifting plate to limit the lifting plate from leaving the lifting slot.

[0018] Furthermore, the powder supply system further includes a plurality of vibrators, and the plurality of vibrators are respectively fixed on the plurality of powder supply hoppers.

[0019] Furthermore, it also includes a powder scraping system, which includes a powder scraping cylinder, a powder scraping plate and a powder sucker. The powder scraping cylinder is fixed on the support frame and its piston rod moves back and forth along the Z-axis direction; the powder scraping plate is fixed on the piston rod of the powder scraping cylinder and moves back and forth along the Z-axis direction, and the bottom end of the powder scraping plate can be in sliding contact with the top surface of the forming block; the powder sucker is fixed on the support frame and its powder suction port can correspond to the top surface of the forming block.

[0020] The above-mentioned further beneficial effect is that the scraping plate of the scraping cylinder is raised and lowered to scrape away excess powder on the top surface of the forming block. When the scraping plate cannot clean it completely, a powder sucker can be used to suck away excess powder on the top surface of the forming block, thereby improving the ratio accuracy of multi-material tablets.

[0021] Furthermore, it also includes a powder recovery system, which includes a recovery motor, a driving wheel, a passive wheel, a belt and a recovery box, the recovery motor is fixed on the slide and its output shaft is arranged along the Z-axis direction; the axes of the driving wheel and the passive wheel are both arranged along the Z-axis direction and spaced apart along the X-axis direction, the driving wheel is fixed on the output shaft of the recovery motor, and the passive wheel is rotatably connected to the slide; the belt is transmitted in a circular manner on the driving wheel and the passive wheel along the X-axis direction; the top surface of the recovery box is open and a plurality of partitions are fixed inside it, and the plurality of partitions divide the interior of the recovery box into a plurality of collection areas arranged along the X-axis direction, and the bottom end of the recovery box is fixed on the belt and moves back and forth along the X-axis direction.

[0022] The above-mentioned further beneficial effect is: the recycling motor drives the belt to reciprocate along the X-axis direction, thereby changing the position of the recycling box in the X-axis direction. Since multiple independently distributed collection areas are arranged in the recycling box along the X-axis direction, multiple powders can be collected separately, thereby improving the powder recovery efficiency and avoiding mixing of multiple powders.

[0023] The above-mentioned method has the following further beneficial effects: it also includes a guide slide, the top of the recycling box is lower than the top of the forming block; the guide slide is fixed on the slide between the recycling box and the forming block, and the guide slide is arranged downward in a direction from close to the forming block to close to the recycling box.

[0024] Furthermore, a heating lamp is included, which is fixed on the support frame and can correspond to the top surface of the forming block.

[0025] A further beneficial effect of the above method is that the efficiency of forming viscous tablets can be improved by placing heating lamps above the forming blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of a multi-material tablet 3D printing device of the utility model;

[0027] Figure 2 This is a front view structural diagram of a multi-material tablet 3D printing device of the present invention;

[0028] Figure 3 This is an enlarged three-dimensional structural diagram of the fixed plate, forming system, powder supply system, liquid spraying system, powder scraping system and powder recovery system in a multi-material tablet 3D printing device of the present invention;

[0029] Figure 4 This is a three-dimensional enlarged structural diagram of the fixed plate, molding system and powder recovery system in a multi-material tablet 3D printing device of the utility model;

[0030] Figure 5 This is a three-dimensional enlarged structural diagram of the forming system and powder recovery system in a multi-material tablet 3D printing device of the present invention;

[0031] Figure 6 This is a front-view enlarged structural diagram of a molding system and a powder recovery system in a multi-material tablet 3D printing device of the present invention;

[0032] Figure 7 This is a partial enlarged structural diagram of the molding system and powder recovery system in a multi-material tablet 3D printing device of the present invention;

[0033] Figure 8 This is an enlarged bottom-up structural diagram of the assembly of a forming block, a lifting plate, and multiple lifting columns in a multi-material tablet 3D printing device of the present invention;

[0034] Figure 9 This is a schematic diagram of the enlarged structure of the multi-material tablet 3D printing device of the present invention, with the forming block, lifting plate and multiple lifting columns separated from each other;

[0035] Figure 10 This is a three-dimensional enlarged structural schematic diagram of the liquid spraying system in a multi-material tablet 3D printing device of the present utility model.

[0036] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0037] 1. Frame, 2. Molding system, 21. X-axis drive mechanism, 211. X-axis motor, 212. X-axis guide rail, 213. X-axis screw, 22. Slide, 23. Molding block, 231. Lifting slot, 232. Powder hole, 24. Z-axis drive mechanism, 241. Fixed frame, 242. Z-axis motor, 243. Lifting frame, 244. Z-axis nut, 25. Lifting plate, 26. Lifting column, 27. X-axis slider , 28, X-axis screw hole, 3, powder supply system, 31, support frame, 32, powder supply hopper, 33, vibrator, 4, spray system, 41, Y-axis drive mechanism, 42, ejector, 5, fixed plate, 51, long hole, 6, powder scraping system, 61, powder scraping plate, 62, powder absorber, 63, heating lamp, 7, powder recovery system, 71, recovery motor, 72, driving wheel, 73, passive wheel, 74, belt, 75, recovery box. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] like Figure 1 As shown, a multi-material tablet 3D printing device includes: a frame 1, a molding system 2, a powder supply system 3 and a liquid spraying system 4.

[0040] The coronal axis of the frame 1 is the X-axis, the sagittal axis is the Y-axis, and the vertical axis is the Z-axis. A fixed plate 5 is fixed inside the frame 1, and the fixed plate 5 is provided with a long strip hole 51 arranged along the X-axis direction; the molding system 2 includes an X-axis drive mechanism 21, a slide 22, a molding block 23, a Z-axis drive mechanism 24, a lifting plate 25 and a plurality of lifting columns 26. The X-axis drive mechanism 21 is fixed on the fixed plate 5 and its driving end reciprocates along the X-axis direction; the slide 22 slides in the long strip hole 51 along the X-axis direction and is fixed to the driving end of the X-axis drive mechanism 21; the molding block 23 is placed on the top of the slide 22 and a lifting groove 231 is provided on its bottom surface, and a plurality of powder holes 232 are provided at the bottom of the lifting groove 231; the Z-axis drive mechanism 24 is fixed on the slide 22 and its driving end reciprocates along the Z-axis direction reciprocating; the lifting plate 25 slides back and forth in the lifting groove 231 along the Z-axis direction and its bottom end can be pressed against the driving end of the Z-axis driving mechanism 24; multiple lifting columns 26 slide in multiple powder holes 232 respectively and their bottom ends are fixed at intervals on the top surface of the lifting plate 25; the powder supply system 3 includes a support frame 31 and multiple powder supply hoppers 32, and the support frame 31 is fixed on the fixed plate 5; multiple powder supply hoppers 32 are fixed on the support frame 31 at intervals along the X-axis direction and their powder leakage holes can be arranged respectively opposite to the multiple powder holes 232; the liquid spraying system 4 includes a Y-axis driving mechanism 41 and multiple injectors 42, the Y-axis driving mechanism 41 is fixed on the frame 1 and its driving end reciprocates along the Y-axis direction; multiple injectors 42 are fixed at intervals at the driving end of the Y-axis driving mechanism 41.

[0041] like Figure 5 As shown, in some specific embodiments, an X-axis slider 27 and an X-axis screw hole 28 are fixed on the slide 22, and the axial direction of the X-axis screw hole 28 is arranged in a square along the X-axis; the X-axis drive mechanism 21 includes an X-axis motor 211, an X-axis guide rail 212 and an X-axis screw 213, and the X-axis guide rail 212 is fixed on the fixed plate 5 along the X-axis; the X-axis slider 27 slides on the X-axis guide rail 212; the X-axis motor 211 is fixed on the fixed plate 5 and its output shaft is arranged along the X-axis direction; the X-axis screw 213 is the driving end of the X-axis drive mechanism 21, the X-axis screw 213 is arranged along the X-axis direction and fixed on the output shaft of the X-axis motor 211, and the X-axis screw 213 is threadedly connected to the X-axis screw hole 28.

[0042] like Figure 6 As shown, in some specific embodiments, the Z-axis drive mechanism 24 may include a fixed frame 241, a Z-axis motor 242, a lifting frame 243 and a top plate, the fixed frame 241 is fixed on the slide 22; the Z-axis motor 242 is fixed on the fixed frame 241, and the output shaft of the Z-axis motor 242 is arranged along the Z-axis direction and is provided with a thread; the lifting frame 243 slides on the fixed frame 241 along the Z-axis direction and is fixed with a Z-axis nut 244, and the Z-axis nut 244 is threadedly connected to the output shaft of the Z-axis motor 242; the top plate is the driving end of the Z-axis drive mechanism 24 and is fixed on the lifting frame 243, the top plate is movably extended into the lifting slot 231 and can touch the bottom end of the lifting plate 25.

[0043] Specifically, both the top plate and the lifting plate 25 can be made of magnetic materials.

[0044] like Figure 9 As shown, in some specific embodiments, a limiting ring is fixed at the notch of the forming block 23 corresponding to the lifting groove 231, and the top of the limiting ring can contact the bottom surface of the lifting plate 25 to limit the lifting plate 25 from leaving the lifting groove 231.

[0045] like Figure 1 As shown, in some specific embodiments, the powder supply system 3 may further include a plurality of vibrators 33 , and the plurality of vibrators 33 are respectively fixed on the plurality of powder supply hoppers 32 .

[0046] like Figure 2 and Figure 3 As shown, in some specific embodiments, a powder scraping system 6 may also be included, which includes a powder scraping cylinder, a powder scraping plate 61 and a powder sucker 62. The powder scraping cylinder is fixed on the support frame 31 and its piston rod moves back and forth along the Z-axis direction; the powder scraping plate 61 is fixed on the piston rod of the powder scraping cylinder and moves back and forth along the Z-axis direction, and the bottom end of the powder scraping plate 61 can be in sliding contact with the top surface of the forming block 23; the powder sucker 62 is fixed on the support frame 31 and its powder suction port can correspond to the top surface of the forming block 23.

[0047] like Figure 5 and Figure 7 As shown, in some specific embodiments, a powder recovery system 7 may also be included, which includes a recovery motor 71, a driving wheel 72, a driven wheel 73, a belt 74 and a recovery box 75. The recovery motor 71 is fixed on the slide 22 and its output shaft is arranged along the Z-axis direction; the axes of the driving wheel 72 and the driven wheel 73 are both arranged along the Z-axis direction and spaced apart along the X-axis direction, the driving wheel 72 is fixed on the output shaft of the recovery motor 71, and the driven wheel 73 is rotatably connected to the slide 22; the belt 74 is annularly transmitted on the driving wheel 72 and the driven wheel 73 along the X-axis direction; the top surface of the recovery box 75 is open and a plurality of partitions are fixed inside it, and the plurality of partitions divide the interior of the recovery box 75 into a plurality of collection areas arranged along the X-axis direction, and the bottom end of the recovery box 75 is fixed on the belt 74 and moves back and forth along the X-axis direction.

[0048] like Figure 5 and Figure 7 As shown, in some specific embodiments, a guide slide 76 may also be included, and the top of the recovery box 75 is lower than the top of the forming block 23; the guide slide 76 is fixed on the slide 22 between the recovery box 75 and the forming block 23, and the guide slide 76 is arranged downwardly in a direction from close to the forming block 23 to close to the recovery box 75.

[0049] like Figure 2 As shown, in some specific embodiments, a heating lamp 63 may be further included. The heating lamp 63 is fixed on the support frame 31 and may correspond to the top surface of the forming block 23 .

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-material tablet 3D printing device, characterized in that: include: A frame (1), wherein the coronal axis of the frame (1) is the X-axis, the sagittal axis is the Y-axis, and the vertical axis is the Z-axis; a fixing plate (5) is fixed inside the frame (1), and the fixing plate (5) is provided with elongated holes (51) arranged along the X-axis direction; A molding system (2), the molding system (2) comprising an X-axis drive mechanism (21), a slide (22), a molding block (23), a Z-axis drive mechanism (24), a lifting plate (25) and a plurality of lifting columns (26), wherein the X-axis drive mechanism (21) is fixed on the fixed plate (5) and its driving end reciprocates along the X-axis direction; the slide (22) slides along the X-axis direction in the long strip hole (51) and is fixed to the driving end of the X-axis drive mechanism (21); the molding block (23) is placed at the top end of the slide (22) and its The bottom surface is provided with a lifting groove (231), and the bottom of the lifting groove (231) is provided with a plurality of powder containing holes (232); the Z-axis driving mechanism (24) is fixed on the slide (22), and its driving end reciprocates along the Z-axis direction; the lifting plate (25) slides reciprocatingly in the lifting groove (231) along the Z-axis direction, and its bottom end can press against the driving end of the Z-axis driving mechanism (24); the plurality of lifting columns (26) slide in the plurality of powder containing holes (232) respectively, and their bottom ends are fixed at intervals on the top surface of the lifting plate (25); A powder supply system (3), the powder supply system (3) comprising a support frame (31) and a plurality of powder supply hoppers (32), the support frame (31) being fixed on the fixed plate (5); the plurality of powder supply hoppers (32) being fixed on the support frame (31) at intervals along the X-axis direction, and the powder leakage holes thereof can be respectively arranged opposite to the plurality of powder receiving holes (232); A liquid spraying system (4) includes a Y-axis driving mechanism (41) and a plurality of injectors (42). The Y-axis driving mechanism (41) is fixed on the frame (1) and its driving end reciprocates along the Y-axis direction; and the plurality of injectors (42) are fixed at intervals on the driving end of the Y-axis driving mechanism (41).

2. A multi-material tablet 3D printing device according to claim 1, characterized in that: An X-axis slider (27) and an X-axis screw hole (28) are fixed on the slide (22), and the axial direction of the X-axis screw hole (28) is arranged in a square along the X-axis; the X-axis drive mechanism (21) comprises an X-axis motor (211), an X-axis guide rail (212) and an X-axis lead screw (213), and the X-axis guide rail (212) is fixed on the fixed plate (5) along the X-axis; the X-axis slider (27) slides on the X-axis guide rail (212); the X-axis motor (211) is fixed on the fixed plate (5) and its output shaft is arranged along the X-axis direction; the X-axis lead screw (213) is the driving end of the X-axis drive mechanism (21), the X-axis lead screw (213) is arranged along the X-axis direction and fixed on the output shaft of the X-axis motor (211), and the X-axis lead screw (213) is threadedly connected to the X-axis screw hole (28).

3. The multi-material tablet 3D printing device according to claim 1, characterized in that: The Z-axis driving mechanism (24) comprises a fixed frame (241), a Z-axis motor (242), a lifting frame (243) and a top plate, wherein the fixed frame (241) is fixed on the slide (22); the Z-axis motor (242) is fixed on the fixed frame (241), and the output shaft of the Z-axis motor (242) is arranged along the Z-axis direction and is provided with a thread; the lifting frame (243) slides on the fixed frame (241) along the Z-axis direction and is fixed with a Z-axis nut (244), and the Z-axis nut (244) is threadedly connected to the output shaft of the Z-axis motor (242); the top plate is the driving end of the Z-axis driving mechanism (24) and is fixed on the lifting frame (243), and the top plate movably extends into the lifting slot (231) and can contact the bottom end of the lifting plate (25).

4. The multi-material tablet 3D printing device according to claim 3, characterized in that: The top plate and the lifting plate (25) are both made of magnetic materials.

5. The multi-material tablet 3D printing device according to claim 1, characterized in that: A limiting ring is fixed to the notch of the forming block (23) corresponding to the lifting groove (231), and the top end of the limiting ring can contact the bottom surface of the lifting plate (25) to limit the lifting plate (25) from leaving the lifting groove (231).

6. The multi-material tablet 3D printing device according to claim 1, characterized in that: The powder supply system (3) further comprises a plurality of vibrators (33), wherein the plurality of vibrators (33) are respectively fixed on the plurality of powder supply hoppers (32).

7. The multi-material tablet 3D printing device according to claim 1, characterized in that: The invention also includes a powder scraping system (6), wherein the powder scraping system (6) includes a powder scraping cylinder, a powder scraping plate (61) and a powder sucker (62), wherein the powder scraping cylinder is fixed on the support frame (31) and its piston rod reciprocates along the Z-axis direction; the powder scraping plate (61) is fixed on the piston rod of the powder scraping cylinder and reciprocates along the Z-axis direction, and the bottom end of the powder scraping plate (61) can be in sliding contact with the top surface of the forming block (23); the powder sucker (62) is fixed on the support frame (31) and its powder suction port can correspond to the top surface of the forming block (23).

8. The multi-material tablet 3D printing device according to claim 7, characterized in that: The powder recovery system (7) further comprises a powder recovery system (7), the powder recovery system (7) comprising a recovery motor (71), a driving wheel (72), a driven wheel (73), a belt (74) and a recovery box (75), the recovery motor (71) being fixed on the carriage (22) and its output shaft being arranged along the Z-axis direction; the axes of the driving wheel (72) and the driven wheel (73) being arranged along the Z-axis direction and spaced apart along the X-axis direction; the driving wheel (72) being sleeved on the output of the recovery motor (71) The driven wheel (73) is rotatably connected to the slide (22) on the axis; the belt (74) is annularly transmitted on the driving wheel (72) and the driven wheel (73) along the X-axis direction; the top surface of the recovery box (75) is open and a plurality of partitions are fixed inside it, and the plurality of partitions divide the interior of the recovery box (75) into a plurality of collection areas arranged along the X-axis direction; the bottom end of the recovery box (75) is fixed on the belt (74) and moves back and forth along the X-axis direction.

9. The multi-material tablet 3D printing device according to claim 8, characterized in that: The invention also includes a guide slide (76), wherein the top of the recycling box (75) is lower than the top of the forming block (23); the guide slide (76) is fixed on the slide (22) between the recycling box (75) and the forming block (23), and the guide slide (76) is arranged in a downwardly inclined manner from the direction close to the forming block (23) to the direction close to the recycling box (75).

10. The multi-material tablet 3D printing device according to claim 1, characterized in that: It also includes a heating lamp (63), which is fixed on the support frame (31) and can correspond to the top surface of the forming block (23).

Images