CN112895463A - Bamboo-plastic composite 3D printing device - Google Patents
Bamboo-plastic composite 3D printing device Download PDFInfo
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- CN112895463A CN112895463A CN202110074068.4A CN202110074068A CN112895463A CN 112895463 A CN112895463 A CN 112895463A CN 202110074068 A CN202110074068 A CN 202110074068A CN 112895463 A CN112895463 A CN 112895463A
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- feeding
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- lifting
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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
- 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
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
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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
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/314—Preparation
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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
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
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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
- B33Y10/00—Processes of additive manufacturing
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/10—Pre-treatment
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a bamboo-plastic composite 3D printing device which comprises a rack, a sprayer, a driving mechanism and an automatic material changing mechanism, wherein a workbench is arranged at the lower part of the rack, a consumable inductor is arranged on the sprayer, the automatic material changing mechanism comprises a material changing manipulator and a translation mechanism, the translation mechanism comprises a slide rail and a power mechanism, the slide rail is arranged below the workbench, a feeding station is arranged below the workbench, the feeding station is arranged on the slide rail and connected with the power mechanism, and a storage bin is arranged on the rack. When the material sensor senses that the material is exhausted, the power mechanism drives the feeding station to move out of the rack along the sliding rail, then the material changing manipulator takes the consumable tube down from the feeding station, a new consumable tube is changed, and then the power mechanism drives the feeding station to reset, so that the consumable can be continued again. Through the automatic consumable of changing of above-mentioned setting, reduce manual operation, and can avoid artifical neglect, lead to printing process to be delayed, improve printing efficiency and quality.
Description
Technical Field
The invention relates to a 3D printing device, in particular to a bamboo-plastic composite 3D printing device.
Background
Currently, 3D printing technology (3D-printing) is gaining wide attention and interest worldwide. 3D printing technology belongs to one of the fast manufacturing technologies (RPM), a technology commonly used in the modern rapid prototyping industry. Since the first 3D printer appeared in 1986, after 30 years of rapid development and the continuous integration of various high and new technologies, various types of Fused Deposition Modeling (FDM), digital light processing modeling (DLP), stereo lithography modeling (SLA), selective laser sintering modeling (SLS), and living cell biology 3D printers for human bodies have been developed. Compared with the traditional mechanical processing. The 3D printing technology has the advantages of low consumption, energy conservation and the like, and is one of the world research hotspots at present.
The Fused Deposition Modeling (FDM)3D printer occupies the mainstream market of the current 3D printer due to the advantages of simple structure, low cost, easy-to-operate human-computer interface and the like. The principle is that the built-in software of the FDM3D printer automatically reads and layers the 3D model data before printing. After layering, the liquid melted at high temperature is extruded out through a nozzle, and is rapidly condensed and solidified when being cooled after being extruded out, and then a three-dimensional object is formed by swinging of a printing head on an XY plane and downward displacement of a hot bed.
In fused deposition modeling 3D printer, need use the linear consumptive material of winding on the feed cylinder, after the consumptive material uses up, need manual operation to change, 3D printing process is generally longer, and artifical nurse consumes the manpower.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a bamboo-plastic composite 3D printing device, which can automatically replace consumables.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a compound 3D printing device is moulded to bamboo, which comprises a frame, the shower nozzle with be used for removing the actuating mechanism of shower nozzle, the lower part of frame is provided with the workstation, be provided with the consumptive material inductor on the shower nozzle, still include automatic reloading mechanism, automatic reloading mechanism includes the mechanical arm of reloading and sets up the translation mechanism in the frame, translation mechanism includes slide rail and power unit, the slide rail sets up the below at the workstation, the below of workstation is provided with the material loading station, the material loading station sets up on the slide rail and is connected with power unit, be provided with the storage bin in the frame.
As a further improvement of the invention, a feeding mechanism for conveying linear consumables is arranged on the rack, the feeding mechanism comprises a feeding frame, a feeding motor and a feeding wheel set, the feeding motor is fixed on the feeding frame, the feeding wheel set is arranged on the feeding frame and connected with the feeding motor, a feeding hole arranged towards the slide rail is arranged on the feeding frame, a discharging hole is arranged on the top surface of the feeding frame, a guide pipe is arranged on the discharging hole, one end of the guide pipe is connected with the discharging hole, and the other end of the guide pipe is connected with the spray head.
As a further improvement of the invention, the power mechanism comprises a driving motor, a gear and a rack, the driving motor is fixed on the frame, the gear is fixed at the output end of the driving motor, and the rack is fixed at the bottom of the feeding station and meshed with the gear.
As a further improvement of the invention, the driving mechanism comprises at least three groups of lifting arms and a corresponding number of lifting motors, at least three groups of lifting guide rails are arranged on the rack, each group of lifting arms are respectively arranged on the lifting guide rails in a sliding manner, each lifting motor is respectively connected with one group of lifting arms to drive the lifting arms to lift, and the output ends of the lifting arms are connected with the spray head.
As a further improvement of the invention, three groups of lifting arms are provided, the three groups of lifting arms are uniformly arranged between the frame and the spray head, six lifting guide rails are provided, every two lifting arms are uniformly arranged on the periphery of the frame in a group, each group of lifting arms comprises two lifting rods and a lifting frame, the lifting frame is connected with a guide sleeve, the guide sleeve is sleeved on the lifting guide rails, one end of each lifting rod is hinged with the lifting frame, and the other end of each lifting rod is hinged with the spray head.
As a further improvement of the manipulator, the manipulator comprises an underframe, a lifting cylinder, a rotary cylinder and a clamping cylinder, wherein the lifting cylinder is fixed on the underframe, the rotary cylinder is fixed on the output end of the lifting cylinder, the output end of the rotary cylinder is connected with a rotary arm, the clamping cylinder is fixed on the rotary arm, and the output end of the clamping cylinder is provided with a clamping jaw.
As a further improvement of the invention, the top of the frame is provided with a hanging sleeve for positioning the guide tube.
As a further improvement of the invention, the storage bin comprises a support, a chassis, a central column and a positioning column, wherein the support is fixed on the rack, the bottom plate is fixed at the top of the support, the central column is fixed at the center of the top surface of the chassis, and the positioning column is arranged on one side of the central column.
The consumable sensor has the advantages that when the consumable sensor senses that the material is exhausted, the power mechanism drives the feeding station to move out of the rack along the sliding rail, then the consumable cylinder is taken down from the feeding station by the material changing manipulator and replaced by a new consumable cylinder, then the power mechanism drives the feeding station to reset, the consumable can be continued again, after the consumable is replaced, the driving mechanism moves the spray head to the place where the part to be processed is unexpected, the consumable is preheated, and after the preheating is completed, the part is returned to be processed again, so that the processing step of interruption can be continued smoothly after the consumable is replaced, and the consumable sensor is a laser correlation sensor or a pressure sensor. Through the automatic consumable of changing of above-mentioned setting, reduce manual operation, and can avoid artifical neglect, lead to printing process to be delayed, improve printing efficiency and quality.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a structural view of a feeding mechanism;
FIG. 3 is a block diagram of the drive mechanism;
FIG. 4 is a block diagram of a loading station;
fig. 5 is a structural view of the stock bin.
Detailed Description
The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.
Referring to fig. 1 to 5, the compound 3D printing device of bamboo-plastic of this embodiment, including frame 1, shower nozzle 2 and the actuating mechanism who is used for moving shower nozzle 2, the lower part of frame 1 is provided with workstation 3, be provided with the consumptive material inductor on shower nozzle 2, still include automatic reloading mechanism, automatic reloading mechanism includes reloading manipulator 4 and the translation mechanism of setting in frame 1, translation mechanism includes slide rail 51 and power unit, slide rail 51 sets up the below at workstation 3, the below of workstation 3 is provided with material loading station 31, material loading station 31 sets up on slide rail 51 and is connected with power unit, be provided with storage bin 11 in frame 1.
When the material is used up in the inductor of consumptive material, power unit drives material loading station 31 and shifts out frame 1 along slide rail 51, then material change manipulator 4 takes off a consumptive material section of thick bamboo from material loading station 31, change a new consumptive material section of thick bamboo, then, power unit drives material loading station 31 and resets, make the consumptive material can be linked again, the consumptive material is changed and is accomplished the back, actuating mechanism removes shower nozzle 2 to the place of waiting to process the part accident, preheat the consumptive material, preheat the completion back, get back to the reprocessing on the part again, thereby make the consumptive material change the back, the processing step of the interrupt that continues that can be smooth, the consumptive material inductor is laser correlation sensor or pressure sensor.
Through the automatic consumable of changing of above-mentioned setting, reduce manual operation, and can avoid artifical neglect, lead to printing process to be delayed, improve printing efficiency and quality.
As a modified specific embodiment, a feeding mechanism for conveying linear consumables is arranged on the rack 1, the feeding mechanism comprises a feeding frame 61, a feeding motor 62 and a feeding wheel set 63, the feeding motor 62 is fixed on the feeding frame 61, the feeding wheel set 63 is arranged on the feeding frame 61 and connected with the feeding motor 62, and the feeding wheel set 63 is a combination of a gear and a wheel, so that the consumables are extruded and conveyed from the middle of the gear and the wheel. The feeding frame 61 is provided with a feeding hole 64 arranged towards the sliding rail 51, the top surface of the feeding frame 61 is provided with a discharging hole 65, a guide pipe 66 is arranged on the discharging hole 65, one end of the guide pipe 66 is connected with the discharging hole 65, the other end of the guide pipe is connected with the spray head 2, in operation, consumable materials enter the feeding frame 61 from the feeding hole 64, enter the guide pipe 66 from the discharging hole 65 after being driven by the feeding wheel set 63, and finally flow out of the spray head 2.
Set up feed inlet 64 towards slide rail 51, when placing the consumptive material and refueling manipulator 4 moves the consumptive material in to material storage bin 11, through putting angle and the settlement of 4 turned angle of refueling manipulator to the consumptive material, just can be in the consumptive material change back, when making progress work or material rest 61 and being close to, one end is stretched out and is aligned with feed inlet 64, then under power unit's drive, get into feed inlet 64, get into behind the feed inlet 64, through the effect of material loading motor 62 and material loading wheel group 63, it continuously moves to drive the consumptive material, flow out from shower nozzle 2 until melting back.
As a modified specific embodiment, the power mechanism comprises a driving motor 71, a gear 72 and a rack 73, wherein the driving motor 71 is fixed on the frame 1, the gear 72 is fixed at the output end of the driving motor 71, and the rack 73 is fixed at the bottom of the feeding station 31 and meshed with the gear 72.
During operation, the driving motor 71 drives the gear 72 to rotate, and the gear 72 drives the rack 73 and the feeding station 31 to move along the slide rail 51.
As a modified specific embodiment, the driving mechanism includes at least three sets of lifting arms 83 and a corresponding number of lifting motors 81, at least three sets of lifting guide rails 82 are arranged on the frame 1, each set of lifting arm 83 is slidably arranged on the lifting guide rail 82, each lifting motor 81 is connected with one set of lifting arm 83 to drive the lifting arm 83 to lift, and the output end of the lifting arm 83 is connected with the spray head 2.
As an improved specific embodiment, there are three groups of lifting arms 83, the three groups of lifting arms 83 are uniformly arranged between the rack 1 and the spray head 2, six lifting guide rails 82 are provided, two groups of lifting arms 83 are uniformly arranged on the periphery of the rack 1, each group of lifting arms 83 includes two lifting rods 831 and a lifting frame 832, a guide sleeve 833 is connected to the lifting frame 832, the guide sleeve 833 is sleeved on the lifting guide rails 82, one end of each lifting rod 831 is hinged to the lifting frame 832, and the other end of each lifting arm is hinged to the spray head 2. The lifting frame 832 and the lifting motor 81 are driven by a synchronous belt.
When the part is printed to shower nozzle 2, through the synchronous lift or asynchronous lift of three lifting arm 83 of group, can not only adjust the coordinate position of shower nozzle 2, can also adjust the angle of shower nozzle 2 to carry out more meticulous processing to the part, make the machining precision higher.
As a modified specific embodiment, the material replacing manipulator 4 includes a bottom frame 41, a lifting cylinder 42, a rotary cylinder 43 and a clamping cylinder 44, the lifting cylinder 42 is fixed on the bottom frame 41, the rotary cylinder 43 is fixed on the output end of the lifting cylinder 42, the output end of the rotary cylinder 43 is connected with a rotary arm 45, the clamping cylinder 44 is fixed on the rotary arm 45, and the output end of the clamping cylinder 44 is provided with a clamping jaw.
During operation, the lifting cylinder 42 drives the rotary cylinder 43 to lift, the rotary cylinder 43 drives the rotary arm 45 to rotate, and through the cooperation, the clamping cylinder 44 and the clamping jaw can transfer the consumable cylinder between the material storage bin 11 and the feeding station 31, and can also move waste materials to other places through the design of other angles.
As a modified specific embodiment, the top of the frame 1 is provided with a hanging sleeve 9 for positioning the guide tube 66.
Upwards buckle guide tube 66 through hanging cover 9, increase guide tube 66's crooked radian, make that the consumptive material can be more smooth and easy pass through from guide tube 66, reduce transportation process's energy consumption, and enable the consumptive material and keep better form, possess better mechanical properties.
As a modified specific embodiment, the storage bin 11 includes a bracket 111, a chassis 112, a central column 113 and a positioning column 114, the bracket 111 is fixed on the rack 1, the bottom plate is fixed on the top of the bracket 111, the central column 113 is fixed in the center of the top surface of the chassis 112, and the positioning column 114 is arranged on one side of the central column 113.
Through center post 113 and reference column 114 location consumptive material section of thick bamboo, make a consumptive material section of thick bamboo keep fixed angle to make a consumptive material section of thick bamboo remove the back, also can keep better and last work or material rest 61 complex state.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The utility model provides a compound 3D printing device is moulded to bamboo, includes frame (1), shower nozzle (2) and is used for removing the actuating mechanism of shower nozzle (2), the lower part of frame (1) is provided with workstation (3), be provided with consumptive material inductor, its characterized in that on shower nozzle (2): still include automatic reloading mechanism, automatic reloading mechanism includes reloading manipulator (4) and sets up the translation mechanism on frame (1), translation mechanism includes slide rail (51) and power unit, slide rail (51) set up the below in workstation (3), the below of workstation (3) is provided with material loading station (31), material loading station (31) set up on slide rail (51) and are connected with power unit, be provided with storage bin (11) on frame (1).
2. The bamboo-plastic composite 3D printing device of claim 1, wherein: the feeding mechanism for conveying linear consumables is arranged on the rack (1), the feeding mechanism comprises a feeding frame (61), a feeding motor (62) and a feeding wheel set (63), the feeding motor (62) is fixed on the feeding frame (61), the feeding wheel set (63) is arranged on the feeding frame (61) and connected with the feeding motor (62), a feeding hole (64) arranged towards the sliding rail (51) is formed in the feeding frame (61), a discharging hole (65) is formed in the top surface of the feeding frame (61), a guide pipe (66) is arranged on the discharging hole (65), one end of the guide pipe (66) is connected with the discharging hole (65) and the other end of the guide pipe is connected with the spray head (2), and consumables enter the feeding frame (61) from the feeding hole (64) and enter the guide pipe (66) from the discharging hole (65) after being driven by the feeding wheel set (63), finally flows out from the spray head (2).
3. The bamboo-plastic composite 3D printing device of claim 1, wherein: the power mechanism comprises a driving motor (71), a gear (72) and a rack (73), the driving motor (71) is fixed on the rack (1), the gear (72) is fixed at the output end of the driving motor (71), and the rack (73) is fixed at the bottom of the feeding station (31) and meshed with the gear (72).
4. The bamboo-plastic composite 3D printing device of claim 1, wherein: actuating mechanism includes lifting arm (83) of at least three groups and corresponding quantity lifting motor (81), be provided with lifting guide (82) of at least three groups on frame (1), every group lifting arm (83) slide respectively and set up on lifting guide (82), every lifting motor (81) respectively with a set of lifting arm (83) are connected to drive lifting arm (83) lift, the output and shower nozzle (2) of lifting arm (83) are connected.
5. The bamboo-plastic composite 3D printing device of claim 4, wherein: lifting arm (83) have three groups, three groups lifting arm (83) evenly arrange between frame (1) and shower nozzle (2), lift guide (82) have six, and two liang of a set of evenly arrange is every group in the periphery of frame (1) lifting arm (83) include two lifter (831) and crane (832), be connected with guide pin bushing (833) on crane (832), guide pin bushing (833) cover is established on lift guide (82), the one end of lifter (831) with crane (832) articulated, the other end is articulated with shower nozzle (2).
6. The bamboo-plastic composite 3D printing device of claim 1, wherein: reloading manipulator (4) include chassis (41), lift cylinder (42), revolving cylinder (43) and centre gripping cylinder (44), lift cylinder (42) are fixed on chassis (41), revolving cylinder (43) are fixed on the output of lift cylinder (42), be connected with swinging boom (45) on the output of revolving cylinder (43), centre gripping cylinder (44) are fixed on swinging boom (45), be provided with the clamping jaw on the output of centre gripping cylinder (44).
7. The bamboo-plastic composite 3D printing device of claim 2, wherein: the top of the frame (1) is provided with a hanging sleeve (9) for positioning the guide tube (66).
8. The bamboo-plastic composite 3D printing device of claim 1, wherein: the storage bin (11) comprises a support (111), a chassis (112), a central column (113) and a positioning column (114), the support (111) is fixed on the rack (1), the bottom plate is fixed at the top of the support (111), the central column (113) is fixed at the center of the top surface of the chassis (112), and the positioning column (114) is arranged on one side of the central column (113).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074068.4A CN112895463A (en) | 2021-01-19 | 2021-01-19 | Bamboo-plastic composite 3D printing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074068.4A CN112895463A (en) | 2021-01-19 | 2021-01-19 | Bamboo-plastic composite 3D printing device |
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| CN112895463A true CN112895463A (en) | 2021-06-04 |
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| CN202110074068.4A Pending CN112895463A (en) | 2021-01-19 | 2021-01-19 | Bamboo-plastic composite 3D printing device |
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| CN112092370A (en) * | 2020-09-10 | 2020-12-18 | 宁波市欧太金文具有限公司 | 3D printing device capable of automatically changing material and adjusting caliber of nozzle |
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Application publication date: 20210604 |