CN111168992A - Efficient and accurate 3D printing forming device and printing method for thermoplastic energetic material - Google Patents
Efficient and accurate 3D printing forming device and printing method for thermoplastic energetic material Download PDFInfo
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- CN111168992A CN111168992A CN202010007509.4A CN202010007509A CN111168992A CN 111168992 A CN111168992 A CN 111168992A CN 202010007509 A CN202010007509 A CN 202010007509A CN 111168992 A CN111168992 A CN 111168992A
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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
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
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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
-
- 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
Abstract
The invention particularly discloses an efficient and accurate 3D printing forming device and a printing method of an energetic material, and the device comprises a rack, a control unit, an XYZ three-dimensional motion platform, a feeding unit, a printing unit and a forming surface optical detection unit, wherein the XYZ three-dimensional motion platform, the feeding unit, the printing unit and the forming surface optical detection unit are respectively connected with the control unit; the XYZ three-dimensional motion platform is arranged on the bottom plate; the printing unit comprises a finishing nozzle for printing the outline of the layer surface and a quick filling nozzle for filling the inside of the outline, the lower parts of the finishing nozzle and the quick filling nozzle penetrate through a hole on the middle partition plate to be connected with the XYZ three-dimensional motion platform, and the finishing nozzle and the quick filling nozzle are driven to move by the motion of the XYZ three-dimensional motion platform; the feeding unit is used for feeding materials to the printing unit; and the molding surface optical detection unit identifies the defects of the molding surface and repairs the defects by adopting a finishing nozzle according to an identification result. The high-efficiency and high-precision forming of the energetic material can be realized by combining the asynchronous high-efficiency extrusion of multiple spray heads with the intelligent finishing technology of the surface.
Description
Technical Field
The invention relates to the field of 3D printing rapid forming of energetic materials, in particular to a high-efficiency accurate 3D printing forming device and a printing method of a thermoplastic energetic material.
Background
The traditional manufacturing method of the energetic material has the defects of low safety, uneven components, air holes and difficulty in forming the grains with complex shapes, and is not suitable for the development of modern propeller and weapon technologies. The additive manufacturing technology provides a brand new way for manufacturing multilayer and special-shaped grains, and the product has extremely high adaptability and can realize non-mold forming because the forming is not influenced by the shape of parts. The energetic material additive manufacturing technology comprehensively considers the problems of specificity, process applicability, safety and the like of energetic materials, solves the defect of poor adaptability of the traditional energetic material forming process to complex special-shaped explosive columns aiming at the characteristics of an energetic material system, can adapt to energetic material explosive types in various shapes, is controlled by a computer in the whole forming process, has less artificial participation, realizes remote control, can better realize man-machine isolation, ensures the safety of workers to a great extent and saves the manufacturing cost. Therefore, there is a sufficient need to develop an efficient additive manufacturing technique for energetic material complex cavity members.
At present, the research on developing 3D printing of energetic materials is less, and a forming method of an energetic material micro grain based on photocuring is provided in an energetic material ink-jet printing rapid forming device of Chinese patent 201320445175.4, but the specific gravity of the energetic material can be reduced by adding photocuring raw materials in the grain, the charging volume is reduced under the same volume, and meanwhile, in the photocuring rapid forming, laser is used as a curing source for ultraviolet curing, so that a concentrated energy source exists, and the safety coefficient of equipment is lower. Meanwhile, the above patents focus on 3D printing of the miniature grain, and the forming time of the grain with larger size is longer.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention aims to provide a high-efficiency and accurate 3D printing forming device and a printing method of a thermoplastic energetic material, and the high-efficiency and accurate 3D printing forming device and the printing method of the thermoplastic energetic material can meet the requirement of rapid high-accuracy 3D printing forming of energetic grains with large sizes and complex structures.
The invention is realized by the following technical scheme:
the invention discloses an efficient and accurate 3D printing forming device for a thermoplastic energetic material, which comprises a rack, a control unit, an XYZ three-dimensional motion platform, a feeding unit, a printing unit and a forming surface optical detection unit, wherein the XYZ three-dimensional motion platform, the feeding unit, the printing unit and the forming surface optical detection unit are respectively connected with the control unit;
the frame comprises a profile frame, the bottom of the profile frame is provided with a bottom plate, and the profile frame is divided into an upper space for installing the printing unit and the feeding unit and a lower space for serving as a forming chamber by a middle partition plate; the XYZ three-dimensional motion platform is arranged on the side wall of the forming chamber, and the control unit is positioned at the lower part of the rack;
the middle partition plate is provided with a hole for installing a printing unit, the printing unit comprises a finishing nozzle for printing the outline of the surface and a quick filling nozzle for filling the inside of the outline, the lower parts of the finishing nozzle and the quick filling nozzle penetrate through the hole in the middle partition plate to be connected with an XYZ three-dimensional motion platform, and the finishing nozzle and the quick filling nozzle are driven to move by the motion of the XYZ three-dimensional motion platform;
the feeding unit is connected with the printing unit and is used for feeding materials to the printing unit;
the molding surface optical detection unit is arranged at the bottom of the middle partition plate and used for identifying defects of the molding surface.
Preferably, the finishing nozzle is a circular needle with a diameter of 0.2-1.0 mm.
Preferably, the cross-sectional shape of the rapid-fill jet is circular, elliptical, or rectangular, and the nozzle size is 1.0-3.0 mm.
Preferably, heating devices are arranged on one sides of the feeding holes of the fine-trimming spray head and the quick-filling spray head, and temperature sensors are arranged on the spray heads of the fine-trimming spray head and the quick-filling spray head.
Further preferably, the heating device adopts an oil bath to provide a heat source, and the temperature sensor adopts a thermocouple.
Preferably, the machine frame is also provided with a transparent observation door for monitoring the forming process.
Preferably, a heat radiation fan is arranged on the side wall of the rack, and the fan is an explosion-proof fan, so that the real-time cooling function of the printing area can be realized.
The matrix of the thermoplastic energetic material aimed at by the device is a thermoplastic elastomer adhesive, and the rest components are metal fuel, oxidant or explosive and the like, and the thermoplastic energetic material can be used as a propellant grain material of a solid rocket engine or a propellant of a gun or a bullet.
The invention also discloses a method for printing the energetic material by adopting the efficient and accurate 3D printing and forming device for the thermoplastic energetic material, which comprises the following steps:
1) the control unit controls the XYZ three-dimensional motion platform to move to drive the fine repair spray head to move to a working position, the control unit controls the feeding unit to convey the energetic material to the fine repair spray head, and after the fine repair spray head melts the energetic material, the outline of the unit layer is printed at a designated position;
2) after the outline printing is finished, the control unit controls the XYZ three-dimensional motion platform to move to drive the rapid filling nozzle to move to a working position, and the control unit controls the rapid filling nozzle to print the inside of the outline of the unit layer;
4) then, the optical detection unit of the forming surface identifies the defects of the forming surface of the unit layer, and when the identification result has defects, a finishing spray head is adopted to finish the defects;
5) repeating the step 4) until the identification result of the optical detection unit of the molding surface to the molding surface is defect-free, and finishing the printing of the unit layer;
6) repeating the steps 1) to 5) to finish the printing of a plurality of unit layers;
7) and after printing is finished, obtaining the required product.
The invention also discloses a method for printing the energetic material by adopting the efficient and accurate 3D printing and forming device for the thermoplastic energetic material, which comprises the following steps:
1) the control unit controls the XYZ three-dimensional motion platform to move to drive the fine trimming spray head to move to a working position, the control unit controls the feeding unit to convey the energetic material to the fine trimming spray head, and after the fine trimming spray head melts the energetic material, a plurality of layers of outlines are printed at a designated position;
2) after the outer contour printing is finished, the control unit controls the XYZ three-dimensional motion platform to move to drive the rapid filling nozzle to move to a working position, and the control unit controls the rapid filling nozzle to print the interior of the multi-layer contour;
4) then, the optical detection unit of the molding surface identifies the defects of the molding surface, and when the identification result has defects, the finishing spray head is adopted to finish the defects;
5) repeating the step 4) until the identification result of the optical detection unit of the molding surface to the molding surface is defect-free, and finishing printing;
6) repeating the steps 1) to 5) to finish the printing of a plurality of unit layers;
7) and after printing is finished, obtaining the required product.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a high-efficiency accurate 3D printing forming device for a thermoplastic energetic material, which comprises an XYZ three-dimensional motion platform, a feeding unit, a printing unit and a forming surface optical detection unit, wherein the XYZ three-dimensional motion platform, the feeding unit, the printing unit and the forming surface optical detection unit are arranged in a rack, the printing unit comprises a fine trimming spray head and a quick filling spray head, the feeding unit conveys the energetic material to the printing unit, and the spray head melts the energetic material and then prints the energetic material to a specified position. The fine trimming spray head is used for printing the outline of the layer surface, the quick filling spray head is used for filling the inside of the outline, and the traditional printing and forming device is only provided with one spray head, so that the forming efficiency is lower, and the device is only suitable for being made into small sizes. The invention considers that two spray heads are combined, a small spray head forms a fine structure, a large spray head is filled quickly, high efficiency and accuracy can be achieved, and the high-efficiency and high-accuracy forming of energetic materials can be achieved by combining the asynchronous high-efficiency extrusion of multiple spray heads with the intelligent finishing technology of the surface. .
Furthermore, the invention adopts thermoplastic material to replace light-cured material, the material has the characteristics of good heating melting fluidity and good room-temperature cooling formability, curing agent is not required to be added into the raw material, the reduction of effective components is avoided, and simultaneously, external light sources such as laser and the like are not required to initiate curing, so that the stimulation of a concentrated energy source is avoided.
Furthermore, the temperature control unit adopts double-stage temperature control and respectively controls the temperature of the feed inlet and the temperature of the outlet of the nozzle, so that the granular materials fed into the fine-trimming spray head and the quick-filling spray head are better melted, and the forming surface is better.
Furthermore, the temperature control unit adopts the oil bath to provide a heat source, and the temperature at the outlet of the feed inlet and the nozzle is monitored in real time through the thermocouple, so that feedback is provided for the temperature control of the oil bath, and the temperature control effect is achieved.
Furthermore, the printing materials of the fine-trimming spray head and the quick-filling spray head do not need to be prepared into a middle filament shape similar to the traditional FDM process, the limitation on the materials is small, energetic material particles are adopted, other processing links are not needed, and the processing links which possibly cause pollution in pretreatment are reduced.
Furthermore, an observation door is further arranged on the rack, and the observation door can monitor the forming process.
The invention discloses a printing method of a high-efficiency accurate 3D printing forming device using energetic materials. The method is efficient and accurate, can print products with complex shapes, and is high in forming rate.
Drawings
Fig. 1 is a schematic structural diagram of a frame of an efficient and accurate 3D printing and forming device for energetic materials of the present invention;
FIG. 2 is a schematic diagram of a rapid fill nozzle;
FIG. 3 is a schematic view of a finishing nozzle;
FIG. 4 is a schematic overall structure diagram of two printing nozzles of the efficient and accurate 3D printing and forming device for energetic materials according to the present invention;
fig. 5 is a schematic diagram of a printing process of the efficient and accurate 3D printing and forming device for energetic materials of the present invention.
Wherein, 1 is a section bar frame; 2 is a middle clapboard; 3 is an XYZ three-dimensional motion platform; 4 is a bottom plate; 5 is a motor; 6 is a reducer; 7 is a coupling; 8 is a feed inlet; 9 is a screw extrusion structure; 10 is a rapid fill nozzle; 11 is a finishing nozzle; 12 is a printing nozzle; 13 is a feed inlet; 14 is an oil bath box; and 15 is a feeding hopper.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in fig. 1, the efficient and accurate 3D printing and forming device for the thermoplastic energetic material comprises a frame, a general control unit, an XYZ three-dimensional motion platform 3 connected with the general control unit, a feeding unit, a printing unit and a forming surface optical detection unit; the frame comprises a profile frame 1, a bottom plate 4 and a middle clapboard 2, wherein the middle clapboard 2 divides the frame into two parts, the upper space is used for installing a printing unit and a feeding unit, and the lower space is a forming chamber; the XYZ three-dimensional motion platform 3 is arranged on a bottom plate 4, and the overall control unit is positioned at the lower part of the rack; the middle partition plate 2 is provided with a hole for installing a printing unit, the printing unit comprises a fine trimming spray head and a quick filling spray head, the fine trimming spray head is used for printing the outline of the layer surface, and the quick filling spray head is used for filling the inside of the outline; the feeding unit is connected with the printing system and used for feeding materials to the printing unit; the molding surface optical detection unit is arranged on the upper part of the molding chamber and used for identifying the defects of the molding surface and finishing the defects by adopting a finishing nozzle according to an identification result so as to finish the printing of a plurality of unit layers.
As shown in fig. 2 to 3, the finishing nozzle and the fast filling nozzle both comprise a motor 5, a reducer 6, a coupler 7 and a screw extrusion structure 9, the motor 5 is connected with the reducer 6, the reducer 6 is connected with the upper end of the screw extrusion structure 9 through the coupler 7, the finishing nozzle further comprises a finishing nozzle 10, and the lower end of the screw extrusion structure 9 is connected with the finishing nozzle 10; the fine trimming spray head further comprises a quick filling nozzle 11, and the lower end of the screw extrusion structure 9 is connected with the quick filling nozzle 11. The fine-trimming spray head and the quick-filling spray head are printed by adopting a screw extrusion structure 9, the printing material does not need to be prepared into a middle filament shape similar to the traditional FDM process, the limitation on the material is small, energetic material granules are adopted, other processing links are not needed, and the processing links possibly causing pollution in pretreatment are reduced.
The fine trimming nozzle 10 adopts a circular needle head with the diameter of 0.2-1 mm; the characteristic dimension of the rapid filling nozzle 11 is 1.0-3.0mm, and the interface shape of the rapid filling nozzle 11 is round, oval or rectangular.
The feeding unit is an intermittent feeding hopper for feeding a fine trimming spray head and a quick filling spray head, and the feeding is granular materials.
Preferably, the finishing nozzle and the fast filling nozzle are provided with temperature control units, and the temperature control units comprise a primary temperature control unit arranged at the feed inlet and a secondary temperature control unit arranged at the finishing nozzle 10 and the fast filling nozzle 11. The temperature control unit adopts an oil bath to provide a heat source, and the temperature at the outlet of the feed port and the nozzle is monitored in real time through thermocouples.
And a transparent observation door is also arranged on the rack and used for monitoring the forming process.
The rack is also internally provided with safety auxiliary facilities which mainly comprise a cooling fan and the like.
The XYZ three-dimensional motion platform 3 is arranged on the side wall of the forming chamber, and has a structure form that the XY plane motion platform is positioned on a Z axis so as to reduce the inertia of a motion part.
Referring to fig. 4, which is a schematic view of an overall structure of two printing nozzles of the efficient and accurate 3D printing and forming device for energetic materials, 12 is a printing nozzle (a left-side finishing nozzle and a right-side fast filling nozzle); 13 is a feed inlet; 14 is an oil bath box; and 15 is a feeding hopper. The method for printing the explosive column by using the 3D printing and forming device comprises the following specific implementation flows (as shown in fig. 5):
1. before printing, the structure of the explosive column is subjected to model design, and the size and the precision are ensured to be within the allowable range of a printer, for example, the explosive column model is a hollow cylindrical explosive column with the outer diameter of 100mm, the inner diameter of 30mm and the height of 15 mm.
2. And converting the designed grain into a three-dimensional model which can be identified by 3D printing, layering, and importing the exported STL format file into a 3D printing forming machine to prepare for starting printing.
3. The printing apparatus is initialized. The solid energetic material blocks or particles are loaded into the feeding hopper 15, the oil bath heating system is started, the heating temperature is set, and the oil bath tank 14 is heated. After the set temperature is reached, the energetic material is melted and flows into the printing nozzle 12 through the feed inlet 13. The temperature of each temperature control device on the spray head is set, the spray head is preheated, and printing can be started.
4. The printer nozzle starts to work, and the powder columns in the designed shapes are printed in a layer-by-layer overlapping mode. During printing of each layer, the finishing nozzle is firstly used for printing out the outline of the layer, then the fast filling nozzle is used for fast filling the internal outline, the optical detection system of the forming surface is used for identifying the defects of the forming surface, and the finishing nozzle is used for finishing to complete the forming of a plurality of unit layers. Repeating the steps until the formation of the powder column is finished.
Claims (9)
1. The efficient and accurate 3D printing forming device for the thermoplastic energetic material is characterized by comprising a rack, a control unit, an XYZ three-dimensional motion platform (3), a feeding unit, a printing unit and a forming surface optical detection unit, wherein the XYZ three-dimensional motion platform, the feeding unit, the printing unit and the forming surface optical detection unit are respectively connected with the control unit;
the machine frame comprises a profile frame (1), a bottom plate (4) is arranged at the bottom of the profile frame (1), and the profile frame (1) is divided into an upper space for installing a printing unit and a feeding unit and a lower space for serving as a forming chamber by a middle partition plate (2); the XYZ three-dimensional motion platform (3) is arranged on the side wall of the forming chamber, and the control unit is positioned at the lower part of the rack;
the middle partition plate (2) is provided with a hole for installing a printing unit, the printing unit comprises a finishing nozzle for printing the outline of the layer surface and a quick filling nozzle for filling the inside of the outline, the lower parts of the finishing nozzle and the quick filling nozzle penetrate through the hole in the middle partition plate (2) to be connected with an XYZ three-dimensional motion platform (3), and the finishing nozzle and the quick filling nozzle are driven to move by the motion of the XYZ three-dimensional motion platform (3);
the feeding unit is connected with the printing unit and is used for feeding materials to the printing unit;
the molding surface optical detection unit is arranged at the bottom of the middle partition plate (2) and is used for identifying defects of the molding surface.
2. The efficient and accurate 3D printing and forming device for the thermoplastic energetic material as claimed in claim 1, wherein the finishing nozzle is a circular needle with a diameter of 0.2-1.0 mm.
3. The efficient and accurate 3D printing and forming device for the thermoplastic energetic material as claimed in claim 1, wherein the cross-sectional shape of the fast filling nozzle is circular, oval or rectangular, and the size of the nozzle is 1.0-3.0 mm.
4. The efficient and accurate 3D printing and forming device for the thermoplastic energetic material as claimed in claim 1, wherein heating devices are arranged on one side of the feed inlets of the finishing nozzle and the fast filling nozzle, and temperature sensors are arranged on the nozzles of the finishing nozzle and the fast filling nozzle.
5. The efficient and accurate 3D printing and forming device for the thermoplastic energetic material as claimed in claim 4, wherein the heating device adopts an oil bath to provide a heat source, and the temperature sensor adopts a thermocouple.
6. The efficient and accurate 3D printing and forming device for the thermoplastic energetic material as claimed in claim 1, wherein a transparent observation door for monitoring the forming process is further arranged on the machine frame.
7. The efficient and accurate 3D printing and forming device for the thermoplastic energetic material as claimed in claim 1, wherein a heat radiation fan is arranged on the side wall of the rack.
8. The method for printing the energetic material by adopting the efficient and accurate 3D printing and forming device for the thermoplastic energetic material as claimed in any one of claims 1 to 7 is characterized by comprising the following steps:
1) the control unit controls the XYZ three-dimensional motion platform (3) to move to drive the fine repair spray head to move to a working position, the control unit controls the feeding unit to convey the energetic material to the fine repair spray head, and after the fine repair spray head melts the energetic material, the outline of the unit layer is printed at a specified position;
2) after the outline printing is finished, the control unit controls the XYZ three-dimensional motion platform (3) to move to drive the rapid filling nozzle to move to a working position, and the control unit controls the rapid filling nozzle to print the inside of the outline of the unit layer;
4) then, the optical detection unit of the forming surface identifies the defects of the forming surface of the unit layer, and when the identification result has defects, a finishing spray head is adopted to finish the defects;
5) repeating the step 4) until the identification result of the optical detection unit of the molding surface to the molding surface is defect-free, and finishing the printing of the unit layer;
6) repeating the steps 1) to 5) to finish the printing of a plurality of unit layers;
7) and after printing is finished, obtaining the required product.
9. The method for printing the energetic material by adopting the efficient and accurate 3D printing and forming device for the thermoplastic energetic material as claimed in any one of claims 1 to 7 is characterized by comprising the following steps:
1) the control unit controls the XYZ three-dimensional motion platform (3) to move to drive the fine repair spray head to move to a working position, the control unit controls the feeding unit to convey the energetic material to the fine repair spray head, and after the fine repair spray head melts the energetic material, a plurality of layers of outlines are printed at a designated position;
2) after the outer contour printing is finished, the control unit controls the XYZ three-dimensional motion platform (3) to move to drive the rapid filling nozzle to move to a working position, and the control unit controls the rapid filling nozzle to print the inner part of the multi-layer contour;
4) then, the optical detection unit of the molding surface identifies the defects of the molding surface, and when the identification result has defects, the finishing spray head is adopted to finish the defects;
5) repeating the step 4) until the identification result of the optical detection unit of the molding surface to the molding surface is defect-free, and finishing printing;
6) repeating the steps 1) to 5) to finish the printing of a plurality of unit layers;
7) and after printing is finished, obtaining the required product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010007509.4A CN111168992A (en) | 2020-01-04 | 2020-01-04 | Efficient and accurate 3D printing forming device and printing method for thermoplastic energetic material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010007509.4A CN111168992A (en) | 2020-01-04 | 2020-01-04 | Efficient and accurate 3D printing forming device and printing method for thermoplastic energetic material |
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| CN111168992A true CN111168992A (en) | 2020-05-19 |
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| CN202010007509.4A Pending CN111168992A (en) | 2020-01-04 | 2020-01-04 | Efficient and accurate 3D printing forming device and printing method for thermoplastic energetic material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112549541A (en) * | 2020-11-09 | 2021-03-26 | 北京航空航天大学 | Safe composite manufacturing method and device for multifunctional material containing wire |
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2020
- 2020-01-04 CN CN202010007509.4A patent/CN111168992A/en active Pending
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| CN105818374A (en) * | 2014-10-03 | 2016-08-03 | 泰科电子公司 | Three dimensional printing inspection apparatus and method |
| CN108283008A (en) * | 2015-07-09 | 2018-07-13 | 西门子公司 | Method and relevant device for monitoring based on powder bed the process of increasing material manufacturing component |
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| CN112549541A (en) * | 2020-11-09 | 2021-03-26 | 北京航空航天大学 | Safe composite manufacturing method and device for multifunctional material containing wire |
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Application publication date: 20200519 |
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| RJ01 | Rejection of invention patent application after publication |