CN110978495A - Collaborative 3D printing device is beaten to cantilever type more - Google Patents
Collaborative 3D printing device is beaten to cantilever type more Download PDFInfo
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- CN110978495A CN110978495A CN201911408380.1A CN201911408380A CN110978495A CN 110978495 A CN110978495 A CN 110978495A CN 201911408380 A CN201911408380 A CN 201911408380A CN 110978495 A CN110978495 A CN 110978495A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/112—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/245—Platforms or substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
Abstract
The invention discloses a cantilever type multi-printing-head cooperative 3D printing device which comprises a supporting frame, wherein the supporting frame is formed by fixing a bottom frame, an upright post and a top frame, a printing platform is arranged on the bottom frame, a motion load platform capable of moving up and down along the upright post is arranged above the printing platform, the motion load platform is of a rectangular frame structure, at least one cantilever mechanism capable of performing two-dimensional motion on an X-Y plane is arranged on the motion load platform, and a printing head and a feeding mechanism connected with the printing head are arranged on each cantilever mechanism; the motion load platform, the cantilever mechanisms and the printing heads are respectively connected with an electronic control unit, and the electronic control unit is used for controlling the up-and-down movement of the motion load platform, the two-dimensional movement of each cantilever mechanism and the switch of each printing head. The invention can effectively improve the printing speed, and can realize quick and batch production especially for large-scale printed products.
Description
Technical Field
The invention belongs to the technical field of 3D printing, and particularly relates to a cantilever type multi-printing-head cooperative 3D printing device.
Background
The 3D printing technology, also called additive manufacturing technology, is a manufacturing method that adds material point by point, line by line, and plane by plane to form a three-dimensional complex structure part. Due to the unique process characteristics, the 3D printing material is almost suitable for manufacturing any type of material, and the commonly used 3D printing material is nylon, gypsum material, aluminum material, titanium alloy, stainless steel, rubber and other materials. There are also a number of 3D printing techniques for different morphologies of materials, Fused Deposition (FDM), laser sintering (DMLS), light curing (DLP), etc. Wherein fused deposition technique (FDM) is one of the mainstream techniques of 3D printing at present. The FDM printing principle is that meltable materials are heated and melted in a printing head channel, the materials are extruded out of a spray head with fine nozzles through a feeding mechanism, the nozzles move in an X-Y plane according to a preset program to form a stacking layer with a certain thickness, and meanwhile the nozzles move in a Z direction, so that the melted materials are deposited on the solidified materials on the upper layer, and the three-dimensional entity is formed by stacking the layers. The printing of complex or large models is long in time consumption, high in cost and low in efficiency, and cannot meet the requirements of rapid and batch production.
The basic structure of the existing FDM 3D printer is that a printing head is fixed on a cross sliding rail to move on an X-Y plane, and a printing platform is lifted along a Z axis to move on a three-dimensional space. However, due to the mutual interference of the movement tracks of the printing heads, only one of the printing heads can effectively work in unit time, and the purpose of simultaneous printing cannot be realized, so that the multi-printing-head printer has no substantial improvement on the printing speed except for realizing multi-material printing or multi-color printing.
Aiming at the defects of low speed and low efficiency of the current printer, a brand new framework needs to be designed urgently, so that the printing speed is effectively improved.
Disclosure of Invention
The invention provides a cantilever type multi-printing-head cooperative 3D printing device which can effectively improve the printing speed and particularly realize rapid and batch production of large-scale printed parts.
A3D printing device with multiple cantilever type printing heads in cooperation comprises a supporting frame, a printing platform, a motion load platform moving up and down along a Z axis, a cantilever mechanism capable of performing two-dimensional motion on an X-Y plane, a printing head mounting platform fixed at one end of a cantilever and moving along the cantilever, a Z axis motion mechanism driving the motion load platform and an electronic control unit;
the supporting frame is formed by fixing a bottom frame, an upright post and a top frame, and the printing platform is arranged on the bottom frame; the motion load platform can move up and down along the upright post; the motion load platform is of a rectangular frame structure; the single cantilever mechanism is arranged on the motion load platform; the printing nozzle mounting platform is used for mounting a printing nozzle and a feeding mechanism;
the electronic control unit is used for controlling the lifting motion of the motion load platform, the X-Y plane motion of the cantilever mechanisms, the cooperative work among the plurality of cantilever mechanisms and the printing control of the printing head.
The motion load platform, the cantilever mechanisms and the printing head are respectively connected with the electronic control unit, the electronic control unit is of a modular structure, the number of modules can be increased or decreased according to the cantilever mechanisms, and the electronic control unit controls the up-and-down movement of the motion load platform, the two-dimensional motion of each cantilever mechanism and the execution instruction to control the cantilever mechanisms to print in order.
The 3D printing device provided by the invention abandons a frame structure of the existing printer, and adopts a cantilever structure to drive the printing head to realize two-dimensional planar motion in the X-Y direction. According to the multi-printing-head 3D printing device, each printing head has an independent structure and is not interfered with each other, so that the multi-printing-head 3D printing device can perform collaborative printing, independent printing and multi-material printing. The printing heads work simultaneously, the printing speed can be increased in multiples, and the printing head has extremely important significance for realizing rapid and batch production.
The cantilever mechanism is fixed on a frame of the motion load platform, one end of the cantilever above the printing platform is provided with a printing head mounting platform, and the other end of the cantilever can be provided with a balancing weight which is equivalent to the weight of the printing head. The cantilever can do two-dimensional motion on an X-Y plane.
And a heating device is arranged at the bottom of the printing platform, so that the model is conveniently heated and cured in the printing process.
The printing platform is fixedly connected with the bottom frame through the leveling knobs, and each edge of the printing platform corresponds to the two leveling knobs and is used for adjusting the level of the printing platform and facilitating replacement of the printing platform.
The electronic control unit has a modular structure, has good expansibility, can increase or decrease the number of the cantilevers within a certain range, and can control the cantilever mechanism to print orderly according to the increase or decrease number of the cantilever mechanism by executing instructions.
The number of the cantilever mechanisms is one or even, and the specific number is adjusted according to the size of the printing device, the size of the model and the expansion capability of the electronic control unit. The number of which is such that the sum of the working areas of the print heads covers the printing area of the printer and that the working areas of adjacent print heads have a certain overlap.
Except for a single-head printer, the number of the cantilevers is preferably even, and the cantilevers are preferably increased or decreased in pairs when increased or decreased.
Preferably, each frame of the motion load platform is provided with a cantilever mechanism.
Among the above-mentioned 3D printing device, Z axle motion drives motion load platform up-and-down motion, provides the displacement in the Z direction for 3D prints. According to different printing requirements, Z-axis motion has two designs: designing a first mode, wherein a printing platform is fixed, and a moving load platform with a cantilever mechanism moves along a Z axis; and designing II, fixing the cantilever mechanism in the Z-axis direction, and driving the printing platform to move along the Z axis by the Z-axis movement mechanism.
Preferably, the large 3D printing device adopts a first design and the small equipment selects a second design.
Aiming at the second design, the invention provides a cantilever type multi-printing-head cooperative 3D printing device, which is characterized by comprising a supporting frame, a moving load platform, a printing platform moving up and down along a Z axis, a cantilever mechanism capable of performing two-dimensional motion on an X-Y plane, a printing head mounting platform fixed at one end of a cantilever and moving along the cantilever, a Z axis movement mechanism driving the printing platform and an electronic control unit;
the supporting frame is formed by fixing a bottom frame, an upright post and a top frame, and the printing platform can move up and down along the upright post; the motion load platform is of a rectangular frame structure; the single cantilever mechanism is arranged on the motion load platform; the printing nozzle mounting platform is used for mounting a printing nozzle and a feeding mechanism;
the electronic control unit is used for controlling the lifting motion of the printing platform, the X-Y plane motion of the cantilever mechanisms, the cooperative work among the cantilever mechanisms and the printing control of the printing head.
The printing platform is driven by four Z-axis motion mechanisms, each Z-axis motion mechanism comprises a Z-axis drive motor fixed on the bottom frame and a Z-axis lead screw connected with an output shaft of the Z-axis drive motor, and four corners of the Z-axis printing platform are respectively provided with internal threads matched with the corresponding Z-axis lead screws.
The 3D printing device with the cantilever type multi-printing head in cooperation has multiple printing functions. The method comprises the following steps: 1. printing independently using any one of the print heads; 2. the multiple printing heads are independently used for printing a plurality of models or producing the same model in batches, and each model can be printed in multiple models by using different materials; 3. the multiple printing heads cooperatively perform single model printing of multiple materials; 4. multiple print heads print in tandem.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, each printing head can work independently and do not interfere with each other, and the plurality of printing heads can be effectively utilized to work cooperatively to print simultaneously, so that the printing time is greatly shortened, the printing efficiency is improved, and the possibility is provided for realizing rapid and batch production of large-scale printed parts. In addition, the printing device is not limited to printing of different materials or a single model, but is also suitable for printing of multiple materials, for example, for workpieces needing a large amount of support, the printing of main materials can be realized by planning a path, and meanwhile, the printing of the support materials is carried out in non-interfering areas, so that the printing time is greatly shortened.
Drawings
Fig. 1 is a schematic overall structure diagram of a 3D printing apparatus with a cantilever-type multi-printhead cooperation according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a moving load platform and a cantilever mechanism in embodiment 1 of the present invention;
fig. 3 is a schematic view of the subareas when the cooperative printing is performed by the printing apparatus 3 of embodiment 1.
Detailed Description
The invention will be described in further detail below with reference to the drawings and examples, which are intended to facilitate the understanding of the invention without limiting it in any way.
Example 1
As shown in fig. 1 and 2, the 3D printing device with the cantilever type multi-print head cooperation comprises a supporting frame, the supporting frame is formed by fixing a bottom frame 101, a vertical column 102 and a top frame 103, a printing platform 201 is arranged on the bottom frame 101, a motion load platform 303 capable of moving up and down along the vertical column 102 is arranged above the printing platform 201, the motion load platform 303 is of a rectangular frame structure, and a cantilever mechanism capable of performing two-dimensional motion on an X-Y plane is arranged on each frame of the motion load platform 303.
The motion load platform 303 is driven by four Z-axis motion mechanisms, each Z-axis motion mechanism comprises a Z-axis drive motor 301 fixed on the bottom frame 101 and a Z-axis screw 302 connected with an output shaft of the Z-axis drive motor 301, and four corners of the motion load platform 303 are respectively provided with internal threads matched with the corresponding Z-axis screw 302.
The cantilever mechanism comprises a cantilever 401 vertically arranged on the frame of the motion load platform 303, and a printing head 403 is arranged at one end of the cantilever 401 positioned in the frame of the motion load platform 303; each frame of the motion load platform 303 is provided with a sliding chute 304, and the bottom of the cantilever 401 is provided with a movable sliding block 402 matched with the sliding chute 304, so that the cantilever 401 can move horizontally along the corresponding frame; a horizontal driving motor 404 and a horizontal lead screw 405 connected with an output shaft of the horizontal driving motor 404 are fixed at one end of the cantilever 401 outside the frame of the moving load platform 303, and the other end of the horizontal lead screw 405 is in threaded connection with the movable slider 402 and is used for driving the cantilever 401 to translate perpendicular to the corresponding frame.
The motion load platform 303, the cantilever mechanisms, and the print heads 403 are connected to an electronic control unit for controlling the up and down movement of the motion load platform 303, the two-dimensional movement of each cantilever mechanism, and the switching of each print head 403, respectively. The electronic control unit has a modular structure, has good expansibility, can increase or decrease the number of the cantilevers 401 within a certain range, and can execute instructions to control the cantilevers 401 to perform ordered printing.
The number of the cantilevers 401 operating simultaneously during printing can be adjusted according to the size of the printer and the size of the model, preferably, the number of the cantilevers 401 is even except for single-head printing, and preferably, the cantilevers are increased or decreased in pairs.
In this embodiment, the printing platform 201 has a flat surface and a heating device at the bottom. The printing platform 201 is fixedly connected with the bottom frame 101 through the leveling knobs 202, and each edge of the printing platform 201 corresponds to two leveling knobs 202, so that the printing platform 201 can be adjusted to be horizontal before printing is started, and meanwhile, the printing platform is convenient to replace.
In the present embodiment, four print heads are used, having the functions of:
1. printing independently using any one of the print heads;
2. the multiple printing heads are independently used, a plurality of models are printed or the same model is produced in batches, and different materials can be used for each model;
3. the multiple printing heads cooperatively perform single model printing of multiple materials;
4. multiple print heads print in tandem.
The embodiment also provides a subarea printing method for printing by using the printing device, which comprises a method for dividing the area and a printing mode for the overlapped area.
As shown in fig. 3, for a symmetrically-distributed four-print-head 3D printing device, a workpiece is divided into four print areas in equal area, adjacent areas are overlapped, and the width of the overlapped area is slightly larger than the maximum width of the print head, so that mutual interference during printing is avoided. The independently completed regions are referred to as independent zones.
The overlapped area is printed in a rotation printing mode, and the printing sequence is circularly printed as follows:
the first layer printing sequence is: the first print head prints a zone 1, a 1-2 overlap region, and a 1-2-3-4 overlap region; the second print head prints the overlap region of the sub-regions 2 and 2-3, the third print head prints the overlap region of the sub-regions three and 3-4, and the fourth print head prints the overlap region of the sub-regions four and 4-1;
the second layer printing sequence is: the first printing head prints the overlapped area of the subareas 1 and 4-1; the second print head prints the overlap region of the subareas 2 and 1-2 and the overlap region of 1-2-3-4, the third print head prints the overlap region of the subareas three and 2-3, and the fourth print head prints the overlap region of the subareas four and 3-4;
the third layer printing sequence is: the first printing head prints the overlapped area of the subareas 1 and 1-2; the second printhead prints the overlap region of zone 2 and 2-3, the third printhead prints the overlap region of zone three and 3-4 and the overlap region of 1-2-3-4, the fourth printhead prints the overlap region of zone four and 4-1;
the second layer printing sequence is: the first printing head prints the overlapped area of the subareas 1 and 4-1; the second print head prints the overlap region of the sub-regions 2 and 1-2, the third print head prints the overlap region of the sub-regions three and 2-3, the fourth print head prints the overlap region of the sub-regions four and 3-4 and the overlap region 1-2-3-4;
in order to prevent the cantilevers from interfering with each other, the printing area of each layer of printing heads starts to print from the overlapping area, for example, the first printing head of the first layer is responsible for the printing work of the first independent area, the 1-2 overlapping area and the 1-2-3-4 overlapping area, the initial printing point is selected to start to print the 1-2-3-4 overlapping area near the vertex of the third independent printing area, then the 1-2 overlapping area is printed, then the first independent printing area is printed step by step until the boundary of the 4-1 overlapping area, and the printing is finished.
The subarea printing method is characterized in that the model is divided into a plurality of areas according to the size of the model, the layout of the cantilever printing heads and the printing range of each printing head, each area is allocated with one printing head to independently print, a certain overlapping area is formed in adjacent subareas, and the preferable width of the overlapping area is 1/10-1/5 of the subarea. The overlap area is interlayer printed by two print heads in turn. Preferably, the number of print heads is even, and the sub-areas are preferably regular areas with equal areas.
By adopting the subarea printing method, the plurality of printing heads can be effectively utilized to cooperatively work and print simultaneously, so that the printing time is greatly shortened, the printing efficiency is improved, and the possibility is provided for realizing rapid and batch production of large-scale printed parts.
Example 2
As an explanation of embodiment 2 of the present invention, only differences from embodiment 1 will be explained below.
In the 3D printing apparatus of embodiment 1, the Z-axis movement mechanism drives the movement load platform 303 to move up and down, so as to provide Z-directional displacement for 3D printing, which is relatively suitable for a large 3D printing apparatus.
For small-sized printing equipment, a mode that the moving load platform 303 is fixed and the printing platform is driven by the Z-axis moving mechanism to move up and down can be adopted, so that displacement in the Z direction is provided for 3D printing. The method comprises the following specific steps:
the utility model provides a collaborative 3D printing device is beaten to cantilever type more, includes braced frame, braced frame is fixed by bottom frame, stand and top frame and forms.
The bottom frame is provided with a printing platform which can move up and down along the upright post, and the printing platform is provided with a Z-axis movement mechanism. A moving load platform fixed with the upright post is arranged above the printing platform, cantilever mechanisms capable of performing two-dimensional movement on an X-Y plane are arranged on the moving load platform, a printing head mounting platform is arranged at one end of each cantilever mechanism, and the original printing head and the feeding mechanism are used.
The printing platform, the cantilever mechanisms and the printing heads are respectively connected with an electronic control unit, and the electronic control unit is used for controlling the up-down movement of the printing platform, the X-Y plane movement of each cantilever mechanism, the cooperative work among the plurality of cantilever mechanisms and the switch of each printing head.
The embodiments described above are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions and equivalents made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. A3D printing device with a cantilever type multi-printing head in cooperation is characterized by comprising a supporting frame, a printing platform, a motion load platform moving up and down along with a Z axis, a cantilever mechanism capable of moving in two dimensions on an X-Y plane, a printing head mounting platform fixed at one end of a cantilever and moving along with the cantilever, a Z axis motion mechanism driving the motion load platform and an electronic control unit;
the supporting frame is formed by fixing a bottom frame, an upright post and a top frame, and the printing platform is arranged on the bottom frame; the motion load platform can move up and down along the upright post; the motion load platform is of a rectangular frame structure; the single cantilever mechanism is arranged on the motion load platform; the printing nozzle mounting platform is used for mounting a printing nozzle and a feeding mechanism;
the electronic control unit is used for controlling the lifting motion of the motion load platform, the X-Y plane motion of the cantilever mechanisms, the cooperative work among the plurality of cantilever mechanisms and the printing control of the printing head.
2. The 3D printing apparatus with cantilever type multi-printhead cooperation according to claim 1, wherein the cantilever mechanism is fixed on the frame of the moving load platform, the cantilever has a printhead mounting platform at one end above the printhead, and a weight block with the weight equivalent to that of the printhead is mounted at the other end.
3. The cantilevered multi-printhead cooperative 3D printing apparatus according to claim 1, wherein the printing platform has a heating function.
4. The cantilevered multi-printhead cooperative 3D printing device according to claim 1, wherein the printing platform has a quick leveling knob.
5. The 3D printing apparatus with cantilever type multi-print head cooperation according to claim 1, wherein the electronic control unit has a modular structure, and can execute instructions to control the cantilever mechanism to print in order according to the increase and decrease number of the cantilever mechanism.
6. The cantilever type multi-print-head cooperative 3D printing device according to claim 1, wherein the number of the cantilever mechanisms is one or even number, and the specific number is adjusted according to the size of the printing device, the size of the model and the expansion capability of the electronic control unit.
7. A3D printing device with multiple cantilever type printing heads in cooperation is characterized by comprising a supporting frame, a motion load platform, a printing platform moving up and down along with a Z axis, a cantilever mechanism capable of moving in two dimensions on an X-Y plane, a printing head mounting platform fixed at one end of a cantilever and moving along with the cantilever, a Z axis motion mechanism for driving the printing platform and an electronic control unit;
the supporting frame is formed by fixing a bottom frame, an upright post and a top frame, and the printing platform can move up and down along the upright post; the motion load platform is of a rectangular frame structure; the single cantilever mechanism is arranged on the motion load platform; the printing nozzle mounting platform is used for mounting a printing nozzle and a feeding mechanism;
the electronic control unit is used for controlling the lifting motion of the printing platform, the X-Y plane motion of the cantilever mechanisms, the cooperative work among the cantilever mechanisms and the printing control of the printing head.
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Cited By (4)
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| CN112942838A (en) * | 2021-01-28 | 2021-06-11 | 浙江迅实科技有限公司 | 3D printing process method for super-large building |
| KR20210157888A (en) * | 2020-06-22 | 2021-12-29 | 주식회사 류진랩 | 3d printing system |
| CN114211746A (en) * | 2021-11-11 | 2022-03-22 | 康硕(德阳)智能制造有限公司 | 3D printing assembly, printing platform and leveling method of platform |
| GB2613020A (en) * | 2021-11-22 | 2023-05-24 | Generative Parametrics Ltd | A method of, and apparatus and system for, determining regions for an additive manufacturing system |
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| CN209022448U (en) * | 2018-07-18 | 2019-06-25 | 广东奥仕智能科技股份有限公司 | The 3D printer of more nozzle printings |
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| KR102439679B1 (en) * | 2020-06-22 | 2022-09-02 | 주식회사 류진랩 | 3D printing system |
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