Modular lozenge manufacturing system

By using modularly designed powder feeding gate and powder storage gate, the problem of powder replenishment and separation in existing 3D printing equipment is solved, enabling rapid powder replenishment and separation, reducing equipment costs and improving tablet production efficiency.

CN117064754BActive Publication Date: 2025-11-04MERDURY BIOPHARMACEUTICAL CORP
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202310940992.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2023-06-28
Filing Date
2023-07-28
Publication Date
2025-11-04
Estimated Expiration
2043-07-28

AI Technical Summary

Technical Problem

Existing 3D printing tablet equipment suffers from slow movement speed due to the large size and heavy weight of the powder collection box, and the need for multiple powder collection boxes increases manufacturing costs, affecting tablet production efficiency. Furthermore, the inability to replace or disassemble different types of powder leads to mixing and affects the results.

Method used

The modular design includes a powder dispensing gate and a powder storage gate. The positioning components and control unit enable rapid replenishment and separation of powder, reducing equipment costs and improving production efficiency.

Benefits of technology

It enables rapid replenishment and separation of medicine powder, avoids mixing, reduces equipment costs, and improves tablet production efficiency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117064754B_ABST
    Figure CN117064754B_ABST
Patent Text Reader

Abstract

The present application is a modular tablet manufacturing system, comprising: a machine body; at least one powder falling gate body and the machine body are mutually arranged and have a powder falling accommodation space; and at least one powder storage gate body is connected to the powder falling gate body, and the powder storage gate body has a plurality of powder storage spaces and each powder storage space is respectively provided with a powder outlet assembly at the bottom, and a plurality of powder storage control units are arranged in the powder storage gate body to drive an outlet linkage assembly to open and close the powder outlet assembly, and the medicine powder in the powder storage space can fall into the powder falling accommodation space of the powder falling gate body to supplement the medicine powder in the powder falling accommodation space. Therefore, the modular tablet manufacturing system can quickly supplement the medicine powder, and can solve the problem that the existing technology needs to set enough powder storage space to store a large amount of medicine powder, which causes the moving speed of the printing equipment to slow down and the tablet production efficiency to be poor, thereby achieving the effect of reducing the equipment cost and improving the tablet production efficiency.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present application relates to a modular tablet manufacturing system capable of quickly replenishing medicine powder and configuring a medicine powder gate according to requirements, thereby reducing equipment cost and improving tablet manufacturing efficiency. BACKGROUND

[0002] With the rapid development of technology, the manufacturing method of tablets has changed from the traditional mold method to the current 3D printing technology. Through computer-aided 3D printing technology, general tablets are manufactured by stacking medicine powder layer by layer.

[0003] However, the existing 3D printing equipment for printing tablets must place the medicine powder in a powder collecting box. The powder collecting box is mainly combined with a printing device containing a nozzle. Therefore, during the powder falling and printing processes, the powder collecting box and the printing device are operated synchronously. In particular, during the printing process, the printing device moves at a high speed to meet the printing requirements. In order to store a large amount of medicine powder, the powder collecting box of the printing device needs to have sufficient powder storage space. Therefore, the volume of the powder collecting box needs to be relatively large, and the weight of the powder collecting box becomes heavy, which leads to a slow moving speed of the printing device and poor tablet production efficiency.

[0004] Moreover, many tablets are composed of multiple components. Therefore, more powder collecting boxes are needed to accommodate different components of medicine powder. The number of powder collecting boxes of the printing device on the market needs to be set according to the maximum number of components of the tablets. This will increase the manufacturing cost of the printing device. The powder collecting boxes cannot be replaced or disassembled according to the types of medicine powder, which leads to a slow moving speed of the printing device and the occurrence of the condition of empty powder collecting boxes.

[0005] Therefore, how to solve the above problems and deficiencies of the prior art is an urgent research and improvement direction for the inventors and related manufacturers in this industry. SUMMARY

[0006] The main purpose of the present application is to provide a modular tablet manufacturing system capable of quickly replenishing medicine powder and configuring a medicine powder gate according to requirements, thereby reducing equipment cost and improving tablet manufacturing efficiency.

[0007] The secondary purpose of the present application is to provide a modular tablet manufacturing system capable of effectively separating the types of medicine powder and printing to avoid the mixing of medicine powder and affecting the effect of tablets.

[0008] To achieve the above purpose, the specific technical solutions of the present application are as follows:

[0009] A modular tablet manufacturing system, characterized by comprising:

[0010] a body, the body is provided with at least one set of plates; and

[0011] a plurality of powder falling gates, the powder falling gates are mutually arranged with the set of plates, and a powder falling accommodation space is formed in the powder falling gates, and a powder falling passage is formed at the bottom of the powder falling gates.

[0012] Further, at least one powder storage gate is further included, the powder storage gate is connected with the powder falling gate, and the powder storage gate has a plurality of partitions, and a plurality of powder storage spaces are separated by the partitions, a powder outlet assembly is arranged at the bottom of each powder storage space, a plurality of powder storage control units are arranged in the powder storage gate to control the powder outlet assemblies respectively, the body can drive the powder falling gate to move below the powder storage gate, and a medicine powder in the powder storage space can fall into the powder falling accommodation space of the powder falling gate to replenish the medicine powder in the powder falling accommodation space.

[0013] Further, at least one powder outlet linkage assembly is further arranged in the powder storage gate, and the powder storage control units drive the powder outlet linkage assemblies to open and close the powder outlet assemblies respectively.

[0014] Further, at least one positioning assembly is arranged on the body, and at least one counter-positioning assembly is arranged on the powder storage gate, when the body drives the powder falling gate to move below the powder storage gate, the positioning assembly and the counter-positioning assembly are mutually positioned, so that the medicine powder in the powder storage space can fall into the powder falling accommodation space of the designated powder falling gate.

[0015] Further, at least one first connecting part is arranged on the side of the set of plates, and at least one first counter-connecting part is arranged on the side of the powder falling gate and is mutually arranged with the first connecting part.

[0016] Further, a first guide groove is formed on the side of the first connecting part, a first guide edge is formed on the side of the first counter-connecting part, and the first guide edge depends on the first guide groove.

[0017] Further, at least one second connecting part is arranged on the side of the set of plates, and at least one second counter-connecting part is arranged on the side of the powder falling gate and is mutually arranged with the second connecting part.

[0018] Further, a second guide groove is formed on the side of the second connecting part, a second guide edge is formed on the side of the second counter-connecting part, the second guide edge depends on the second guide groove, at least one counter-connecting hole is formed on the second counter-connecting part for a pull rod, and the pull rod is controlled by a control member to move forward and backward and is arranged in or separated from the counter-connecting hole.

[0019] Further, at least one stirring driving assembly is arranged on the other side of the powder falling gate relative to the group of plates, and at least one stirring roller is arranged in the powder falling accommodation space of the powder falling gate, and the stirring roller is arranged in the stirring driving assembly.

[0020] Further, at least one powder falling driving assembly is arranged on the other side of the powder falling gate relative to the group of plates, and at least one powder falling roller is arranged in the powder falling accommodation space of the powder falling gate, and the powder falling roller is arranged in the powder falling driving assembly, and the powder falling roller is arranged in front of the powder falling opening.

[0021] Further, at least one powder falling gate assembly is arranged on the top of the powder falling accommodation space of the powder falling gate, and at least one powder falling interval assembly is arranged on the side of the powder falling gate assembly.

[0022] Further, a powder pressing assembly is arranged on the front side of the machine body, and the powder pressing assembly is arranged at the position of the powder falling opening.

[0023] Through the above design scheme, the present application can bring the following beneficial effects:

[0024] 1. The powder can be quickly supplemented, and the powder gate can be configured according to requirements, so as to reduce the equipment cost and improve the efficiency of the medicine pill manufacturing.

[0025] 2. The types of medicine powder can be effectively separated and printed, so as to avoid the mixing of the medicine powder and affect the effect of the medicine pill. BRIEF DESCRIPTION OF DRAWINGS

[0026] The present application will be further described below in combination with the drawings and specific embodiments:

[0027] Figure 1 It is a system schematic diagram of the modular medicine pill manufacturing system of the present application.

[0028] Figure 2 It is a machine body schematic diagram of the modular medicine pill manufacturing system of the present application.

[0029] Figure 3 It is a machine body and powder falling gate partial schematic diagram of the modular medicine pill manufacturing system of the present application.

[0030] Figure 4 It is a machine body and powder falling gate partial schematic diagram of the modular medicine pill manufacturing system of the present application.

[0031] Figure 5 It is a powder storage gate schematic diagram of the modular medicine pill manufacturing system of the present application.

[0032] Figure 6 It is another powder storage gate schematic diagram of the modular medicine pill manufacturing system of the present application.

[0033] Figure marked description: 1-modular tablet manufacturing system; 2-machine body; 21-group plate; 211-first group joint; 2111-first guide groove; 212-second group joint; 2121-second guide groove; 22-positioning assembly; 23-stirring drive assembly; 231-stirring adapter; 24-falling powder drive assembly; 241-falling powder adapter; 25-control; 26-pull rod; 27-powder pressing assembly; 3-falling powder gate body; 31-first docking part; 311-first guide edge; 32-second docking part; 321-second guide edge; 322-docking hole; 33-falling powder containing space; 34-falling powder gate assembly; 35-falling powder spacing assembly; 36-stirring roller; 37-falling powder roller; 38-stirring linkage; 39-falling powder opening; 4-powder storage gate body; 41-alignment assembly; 42-baffle; 43-powder storage space; 44-powder storage powder outlet assembly; 45-powder storage control unit; 46-powder outlet linkage assembly; 47-powder storage spacing assembly. DETAILED DESCRIPTION

[0034] In order to better understand the purpose, structure and function of the present application, the modular tablet manufacturing system of the present application is further described in detail below in combination with the drawings.

[0035] First, please refer to Figure 1 The system schematic diagram of the modular tablet manufacturing system of the present application is shown, and it can be clearly seen from the figure that the modular tablet manufacturing system 1 comprises a machine body 2 and at least one falling powder gate body 3 and at least one powder storage gate body 4.

[0036] The machine body 2 is a 3D pharmaceutical printing device, and at least one group plate 21 is arranged on the machine body 2. In this embodiment, two group plates 21 are arranged on the machine body 2, and one of the group plates 21 is arranged at the center of the machine body 2, and the other group plate 21 is arranged on one side of the machine body 2. The falling powder gate body 3 is arranged on the machine body 2, and in this embodiment, the falling powder gate body 3 is arranged between the two group plates 21, and the falling powder gate body 3 is arranged on both sides of the group plate 21. The powder storage gate body 4 is connected to the falling powder gate body 3 during use, wherein the powder storage gate body 4 can be arranged above the falling powder gate body 3, or the powder storage gate body 4 and the falling powder gate body 3 can be arranged horizontally.

[0037] Please refer to Figure 2As shown, it is a schematic diagram of the body of the modular tablet manufacturing system of the present application, wherein the body 2 is provided with at least one positioning assembly 22, which can be a mechanism positioning or an infrared emitter. In addition, the group plate 21 of the body 2 is provided with at least one first set of interfaces 211 and at least one second set of interfaces 212. In this embodiment, the first set of interfaces 211 and the second set of interfaces 212 are arranged on one side of the group plate 21 opposite to the other group plate 21, and the first set of interfaces 211 and the second set of interfaces 212 are also arranged on one side of the group plate 21 opposite to the center group plate 21. The first set of interfaces 211 is formed with a first guide groove 2111, and the second set of interfaces 212 is formed with a second guide groove 2121. The first guide groove 2111 and the second guide groove 2121 are V-shaped grooves. In addition, the group plate 21 of the body 2 at the center position is provided with at least one stirring driving assembly 23 and at least one powder falling driving assembly 24 on the other side of the powder falling shutter 3. The body 2 is provided with a control member 25 (as shown in Figure 3 ) and a pull rod 26 connected to the control member 25. In addition, the front side of the body 2 is provided with a powder pressing assembly 27 below the powder falling shutter 3.

[0038] Please refer to Figure 3 and Figure 4 , which are a partial schematic diagram and a partial exploded schematic diagram of the body and the powder falling shutter of the modular tablet manufacturing system of the present application. The powder falling shutter 3 and the group plate 21 are arranged in pairs. In this embodiment, the powder falling shutter 3 is provided with at least one first docking portion 31 and at least one second docking portion 32 on the two sides. The first docking portion 31 is arranged in pairs with the first set of interfaces 211, and the second docking portion 32 is arranged in pairs with the second set of interfaces 212. In addition, the first docking portion 31 is formed with a first guide edge 311, which is attached to the first guide groove 2111, so that the first docking portion 31 and the first set of interfaces 211 are arranged in pairs. The second docking portion 32 is formed with a second guide edge 321, which is attached to the second guide groove 2121, so that the second docking portion 32 and the second set of interfaces 212 are arranged in pairs. In addition, the second docking portion 32 is formed with at least one docking hole 322, which is arranged in pairs with the pull rod 26. The pull rod 26 is controlled by the control member 25 to move forward and backward and to be arranged in pairs or separated from the docking hole 322.

[0039] Again, the powder falling gate body 3 is internally formed with a powder falling accommodation space 33, and at least one powder falling gate assembly 34 is arranged at the top of the powder falling accommodation space 33, and at least one powder falling spacing assembly 35 is arranged at the side of the powder falling gate assembly 34, which is a powder falling baffle. In addition, at least one stirring roller 36 and at least one powder falling roller 37 are arranged in the powder falling accommodation space 33. In this embodiment, two sets of stirring rollers 36 are arranged in the powder falling accommodation space 33, and one end of the upper stirring roller 36 is arranged with a stirring adapter 231 of the stirring driving assembly 23, which can be directly arranged or arranged by a gear. In this embodiment, it is arranged by a gear to drive the stirring roller 36 to rotate, and the other end of the upper stirring roller 36 is arranged with a stirring connecting piece 38 and one end of the lower stirring roller 36, so that the upper stirring roller 36 can be controlled to rotate by the stirring driving assembly 23, and the lower stirring roller 36 is driven to rotate by the upper stirring roller 36. In addition, the powder falling roller 37 is arranged with a powder falling adapter 241 of the powder falling driving assembly 24, which can be directly arranged or arranged by a gear. In this embodiment, it is arranged by a gear to drive the stirring roller 36 to rotate, and the powder falling roller 37 is arranged in front of the powder falling port 39, and the powder falling port 39 is arranged at the position of the powder falling port 39. When the powder falls, the height of the powder falling port 39 is higher than the powder falling port 39, and when the powder is pressed, the height of the powder falling port 39 is lower than the powder falling port 39.

[0040] Again, please refer to Figure 5As shown, the powder storage gate of the modular tablet manufacturing system is shown in the schematic diagram, wherein the powder storage gate 4 is provided with at least one alignment assembly 41, which can be a mechanism alignment or an infrared reflection element. The powder storage gate 4 has a plurality of partitions 42, and the interior of the powder storage gate 4 is divided into a plurality of powder storage spaces 43 by the partitions 42. The powder storage gate 4 is provided with a powder storage and discharging assembly 44 at the bottom of each powder storage space 43. The powder storage and discharging assembly 44 is arranged at the powder discharging port of the powder storage space 43. The powder storage and discharging assembly 44 can be a gate, a ratchet wheel, a worm gear, etc. The powder storage gate 4 is provided with a powder storage control unit 45 in each powder storage space 43. The powder storage control unit can control the opening and closing of the powder discharging port of the powder storage space 43 by the powder discharging linkage assembly. In this embodiment, the powder storage gate 4 is also provided with a powder discharging linkage assembly 46 in each powder storage space 43. The powder discharging linkage assembly 46 is arranged with the powder storage control unit 45, and the powder discharging linkage assembly 46 is in contact with the powder storage and discharging assembly 44. The powder storage control unit 45 drives the opening and closing of the powder storage and discharging assembly 44 by the powder discharging linkage assembly 46. The powder storage gate 4 is also provided with at least one powder spacing assembly 47 on the side of the powder storage and discharging assembly 44. The powder spacing assembly 47 is a powder baffle.

[0041] Before the operation of the tablet manufacturing system, different numbers of powder falling gates 3 can be arranged according to the ingredient requirements of the tablets. Different powders can be arranged in each powder falling gate 3. The powder falling gate 3 can be directly arranged on the assembly plate 21 of the machine body 2, so that the first docking part 31 and the first assembly part 211 are arranged with each other, and the second docking part 32 and the second assembly part 212 are arranged with each other. The first docking part 31 and the first assembly part 211, and the second docking part 32 and the second assembly part 212 respectively have the guide structure, so that the powder falling gate 3 can be directly arranged vertically on the machine body 2 from the top, and quickly assembled on the machine body 2 through the first docking part 31 and the first assembly part 211, and the second docking part 32 and the second assembly part 212. Then the control member 25 controls the pull rod 26 to arrange the docking hole 322, so that the powder falling gate 3 can be quickly assembled on the machine body 2, and at the same time, the effect of avoiding the mixing of powders and affecting the effect of tablets can be achieved. Conversely, if the powder falling gate 3 needs to be replaced, the control member 25 can control the pull rod 26 to separate from the docking hole 322, and then the powder falling gate 3 can be directly taken out from the assembly plate 21, so that the powder falling gate 3 can be quickly disassembled and assembled on the machine body 2, and the powder falling gate 3 can be quickly disassembled and replaced according to the ingredient requirements, and the effect of reducing the cost of equipment and improving the efficiency of tablet manufacturing can be achieved.

[0042] Yet, the powder containing space 33 of the powder gate 3 contains medicine powder, and different medicine powder can be set in the powder gates 3 according to the composition requirement of the medicine pills, and when the medicine pill manufacturing system needs to print medicine powder, the control host can control the moving position of the machine body 2, and can control the stirring driving assembly 23 to drive the rotating speed of the stirring roller 36 in the powder containing space 33, and can control the powder driving assembly 24 to drive the rotation of the powder roller 37 to drop the medicine powder into the powder outlet 39, so as to achieve the effect of accurately controlling the powder amount of each powder gate 3.

[0043] In addition, if the medicine powder in the powder gate 3 on the machine body 2 needs to be supplemented, the control host can control the machine body 2 to move to below the powder storage gate 4, and different medicine powder is set in each powder storage space 43 in the powder storage gate 4, so that when the control host controls the machine body 2 to move to below the powder storage gate 4, the powder gate 3 can be moved to below the powder storage space 43 that needs to be supplemented with medicine powder, and the positioning between the machine body 2 and the powder storage gate 4 is positioned by the positioning assembly 22 and the alignment assembly 41, so that the powder gate 3 that needs to be supplemented with medicine powder can be accurately moved to below the powder storage space 43 that can be supplemented with medicine powder.

[0044] After the powder gate 3 that needs to be supplemented with medicine powder is moved to below the powder storage space 43 that can be supplemented with medicine powder, the powder storage outlet assembly 44 of the powder storage space 43 that can be supplemented with medicine powder is attached to the powder gate assembly 34 of the powder gate 3 that needs to be supplemented with medicine powder, and the control host can control the powder storage control unit 45 of the powder storage space 43 that can be supplemented with medicine powder to start the powder outlet linkage assembly 46, so that the powder outlet linkage assembly 46 slowly pushes the powder storage outlet assembly 44, so that the powder storage outlet assembly 44 is opened, and at the same time that the powder storage outlet assembly 44 is opened, the powder storage outlet assembly 44 simultaneously pushes the powder gate assembly 34, so that the powder storage space 43 that can be supplemented with medicine powder is connected to the powder containing space 33 that needs to be supplemented with medicine powder, and the medicine powder in the powder storage space 43 directly falls into the powder containing space 33, thereby the modular medicine pill manufacturing system 1 can quickly supplement medicine powder, thereby solving the problem that in the prior art, sufficient powder storage space needs to be provided to store a large amount of medicine powder, resulting in slow movement of the printing equipment and low efficiency of medicine pill production, thereby achieving the effects of reducing equipment cost and improving medicine pill production efficiency.

[0045] and wherein the powder storage control unit 45 activates the powder outlet linkage assembly 46, and the powder outlet linkage assembly 46 pushes the powder outlet assembly 44 of the powder storage at the same time, the powder outlet assembly 44 of the powder storage simultaneously opens the powder storage side shutter, and the powder storage side shutter engages the powder falling side shutter, so that when the medicine powder in the powder storage space 43 falls into the powder falling accommodation space 33, the powder storage side shutter and the powder falling side shutter can block the dust or the medicine powder flying out formed by the falling medicine powder.

[0046] and wherein after the medicine powder in the powder falling accommodation space 33 is filled, the control host can control the powder storage control unit 45 of the refillable powder storage space 43, so that the powder storage control unit 45 activates the powder outlet linkage assembly 46, and the powder outlet linkage assembly 46 pulls back the powder outlet assembly 44 of the powder storage, so that the powder outlet assembly 44 of the powder storage returns to the original position and closes the powder storage space 43, and when the powder outlet assembly 44 of the powder storage returns to the original position, the powder falling shutter assembly 34 can also return to the original position and close the powder falling accommodation space 33 by the elastic force.

[0047] Please refer to Figure 6 The powder storage shutter 4 is shown in another schematic diagram of the modular medicine pill manufacturing system of the present application, wherein the internal volume of the powder storage space 43 in the powder storage shutter 4 gradually decreases from front to back, and a slope is formed at the bottom of the powder storage shutter 4, and the bottom of each powder storage space 43 is also provided with the powder outlet assembly 44, which closes the powder storage space 43, so that the powder storage space 43 can conveniently fall the medicine powder into the powder falling accommodation space 33 by the slope.

Claims

1. A modular lozenge manufacturing system, characterized by The application comprises: a body provided with at least one set of plates; and a plurality of powder falling gates, which are arranged with the set of plates, and each of the powder falling gates is provided with a powder falling accommodation space and a bottom provided with a powder falling opening; the body is provided with at least one positioning assembly, and the powder falling gate is provided with at least one counter-positioning assembly, and when the body drives the powder falling gate to move below the powder falling gate, the positioning assembly and the counter-positioning assembly are positioned with each other, so that the medicine powder in the powder storage space can fall into the powder falling accommodation space of the designated powder falling gate. the set of plates is provided with at least one first set of interfaces on the side, and the powder falling gate is provided with at least one first counter-interface arranged with the first set of interfaces; the side of the first set of interfaces is provided with a first guide groove, and the side of the first counter-interface is provided with a first guide edge, and the first guide edge is attached to the first guide groove; the set of plates is provided with at least one second set of interfaces on the side, and the powder falling gate is provided with at least one second counter-interface arranged with the second set of interfaces; the side of the second set of interfaces is provided with a second guide groove, and the side of the second counter-interface is provided with a second guide edge, and the second guide edge is attached to the second guide groove, and the second counter-interface is provided with at least one counter-hole for a pull rod, and the pull rod is controlled by a control member to move forward and backward and arrange or separate the counter-hole; the set of plates is provided with at least one stirring driving assembly on the other side relative to the powder falling gate, and the powder falling gate is provided with at least one stirring roller in the powder falling accommodation space, and the stirring roller is arranged with the stirring driving assembly; the set of plates is provided with at least one powder falling driving assembly on the other side relative to the powder falling gate, and the powder falling gate is provided with at least one powder falling roller in the powder falling accommodation space, and the powder falling roller is arranged with the powder falling driving assembly, and the powder falling roller is arranged in front of the powder falling opening.

2. The modular lozenge manufacturing system of claim 1, wherein: The application further comprises at least one powder storage gate arranged with the powder falling gate, and the powder storage gate is provided with a plurality of partitions and a plurality of powder storage spaces separated by the partitions, and the bottom of each powder storage space is provided with a powder outlet assembly, and the powder storage gate is provided with a plurality of powder control units for controlling the powder outlet assembly, and the body can drive the powder falling gate to move below the powder storage gate, and the medicine powder in the powder storage space can fall into the powder falling accommodation space of the powder falling gate to supplement the medicine powder in the powder falling accommodation space.

3. The modular lozenge manufacturing system of claim 2, wherein: The powder storage gate is further provided with at least one powder outlet linkage assembly, and the powder control unit drives the powder outlet linkage assembly to open and close the powder outlet assembly.

4. The modular lozenge manufacturing system of claim 2, wherein: The powder storage gate is further provided with at least one powder spacing assembly on the side of the powder outlet assembly, and the powder falling gate is provided with at least one powder falling gate assembly on the top of the powder falling accommodation space, and at least one powder spacing assembly is arranged on the side of the powder falling gate assembly.

5. The modular lozenge manufacturing system of claim 1, wherein: The body is provided with a powder pressing assembly arranged at the position of the powder falling opening.

Citation Information

Patent Citations

  • Powder laying system and 3D printer

    CN107839228A

  • Three-dimensional printing of personalized pills

    WO2020145898A1