CN111421812A - Rapid forming process for unmanned aerial vehicle stock bin - Google Patents
Rapid forming process for unmanned aerial vehicle stock bin Download PDFInfo
- Publication number
- CN111421812A CN111421812A CN202010205994.6A CN202010205994A CN111421812A CN 111421812 A CN111421812 A CN 111421812A CN 202010205994 A CN202010205994 A CN 202010205994A CN 111421812 A CN111421812 A CN 111421812A
- Authority
- CN
- China
- Prior art keywords
- unmanned aerial
- aerial vehicle
- bin
- printing substrate
- printing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- 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]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/028—Angle tools
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/02—Deburring or deflashing
- B29C37/04—Deburring or deflashing of welded articles, e.g. deburring or deflashing in combination with welding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
- B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/04—Polyesters derived from hydroxycarboxylic acids
- B29K2067/046—PLA, i.e. polylactic acid or polylactide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3076—Aircrafts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
Abstract
The invention relates to the field of unmanned aerial vehicle manufacturing, and particularly discloses a rapid forming process for an unmanned aerial vehicle bin, wherein the rapid forming process for the unmanned aerial vehicle bin is characterized in that 3D printing is carried out by adopting an FDM (fused deposition modeling) process, so that the time for manufacturing a mold is saved, the manufacturing period is short, the processing cost is low, meanwhile, a fiber reinforcing material is bonded and coated on the surface of a 3D printing substrate by adopting a bonding agent, the structural strength is improved, rapid processing can be realized, an anti-aging protection is realized by carrying out surface chemical treatment on the surface of the substrate and spraying and coating anti-ultraviolet gloss oil to form an anti-ultraviolet coating, and; the product prepared by the invention is light in weight, is suitable for small-batch and single-batch production, and solves the problems of low product structural strength and easy brittle fracture and deformation after long-term exposure to strong light in the small-batch production of the existing unmanned aerial vehicle bin forming method.
Description
Technical Field
The invention relates to the field of unmanned aerial vehicle manufacturing, in particular to a rapid forming process for an unmanned aerial vehicle bin.
Background
Containers are products that are often used in mechanical and chemical plants. The unmanned aerial vehicle bin is used as a container product, can be used in plant protection unmanned aerial vehicles and agricultural unmanned aerial vehicles, and has great significance for fertilization and pesticide application operations. At present, most of conventional unmanned aerial vehicle bins are formed by adopting a process scheme that polyethylene is adopted for blow molding or plastic sucking and then welding, a mold needs to be manufactured, the requirement on processing equipment is high, the conventional unmanned aerial vehicle bins are suitable for mass production and are not suitable for small-batch and single-batch production, and meanwhile, products produced by blow molding or plastic sucking are heavier in weight. To small batch production and unmanned aerial vehicle customization development field, the product is mostly singleton or small batch production, in agricultural unmanned aerial vehicle feed bin design process, requires that feed bin subassembly quality is light, and mechanical strength is high, and toughness is high, takes place the difficult fracture of deformation, requires low cost simultaneously, and the delivery date is short, and disposable input low cost generally adopts 3D printing technique to carry out direct manufacturing. If adopt 3D to print and carry out direct preparation, then unmanned aerial vehicle feed bin structural strength under the equal quality is lower, exposes for a long time and easily brittle failure warp under the highlight.
However, the above technical solutions have the following disadvantages in practical use: the existing unmanned aerial vehicle bin forming method has the problems that the structural strength of the unmanned aerial vehicle bin is low and the unmanned aerial vehicle bin is easy to crack and deform after being exposed to strong light for a long time in small-batch production.
Disclosure of Invention
The embodiment of the invention aims to provide a rapid forming process for an unmanned aerial vehicle bin, and aims to solve the problems that the existing unmanned aerial vehicle bin forming method in the background art is low in product structural strength and easy to crack and deform after being exposed to strong light for a long time in small-batch production.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions: the utility model provides an unmanned aerial vehicle feed bin rapid prototyping technology, include following step:
1)3D printing of a substrate: 3D printing is carried out on the base material according to the shape to be formed of an unmanned aerial vehicle bin by adopting the existing FDM (Fused Deposition Modeling) process to obtain a 3D printing base body;
2) chemical treatment and coating of the fibrous reinforcement: carrying out surface chemical treatment on the 3D printing substrate, then bonding and coating the 3D printing substrate subjected to surface chemical treatment with an adhesive to form a fiber reinforced material, and then cutting off redundant flash to obtain the 3D printing substrate with a fiber reinforced layer;
3) coating a rich resin layer: coating the surface of the 3D printing substrate with the fiber reinforced layer with the adhesive in the step 2) to form a resin-rich layer, and then polishing the surface until the surface roughness Ra is not less than 0.8 mu m to obtain a polished 3D printing substrate; specifically, the adhesive may be coated on the inner surface and/or the outer surface of the 3D printing substrate with the fiber reinforced layer;
4) spraying an oil paint layer: spraying nitro paint on the surface of the polished 3D printing substrate to obtain a 3D printing substrate with a paint layer; specifically, a nitro paint is sprayed on the inner surface and/or the outer surface of the polished 3D printing substrate;
5) spraying an ultraviolet-resistant coating: spraying anti-ultraviolet gloss oil on the surface of the 3D printing substrate with the paint layer to form an anti-ultraviolet coating, standing for 24 hours in a cool environment, finishing a workpiece, and obtaining the unmanned aerial vehicle bin; specifically, the ultraviolet-resistant varnish may be sprayed on the inner surface and/or the outer surface of the 3D printing substrate with the paint layer.
As a further proposal of the invention, the matrix material can be selected from thermoplastic materials such as P L A (Polylactic acid) or ABS (acrylonitrile Butadiene styrene) plastics and the like.
As a still further scheme of the invention: the 3D printing substrate further comprises a step of physical surface treatment before surface chemical treatment, wherein the physical surface treatment is to remove burrs and supporting structures on the surface of the 3D printing substrate by using a file and sharp-nose pliers.
As a still further scheme of the invention: the surface chemical treatment is to brush 1-2 times of chloroform (the purity is more than 99%) on the inner surface and the outer surface of the 3D printing substrate by using a brush, naturally dry the substrate in a ventilation environment after each brushing, and after drying, the surface of the 3D printing substrate is covered by a film-like substance, and if no cornea covering is mounted, the coating needs to be supplemented, and the specific brushing amount is selected according to the requirement, which is not limited herein.
Specifically, chloroform is sprayed on the inner surface and the outer surface of the 3D printing substrate to serve as chemical polishing liquid, after burrs and supporting structures on the surface of the 3D printing substrate are removed by matching with physical surface treatment, sharp burrs on the surface are further removed, and the anti-brittle fracture performance of the 3D printing substrate in the vertical direction is enhanced by utilizing the solubility of the chemical polishing liquid.
The surface chemical treatment uses chloroform, and has good solubility in polylactic acid. Therefore, the surface of the polylactic acid is dissolved by brushing chloroform on the surface of the 3D printing substrate, the interlayer gap is filled with the chloroform dissolved with the polylactic acid, the chloroform has extremely strong volatility, and after the chloroform volatilizes, the polylactic acid is deposited in the interlayer gap, so that the adhesion surface between material layers is increased, and the strength of the printing material is further improved.
As a still further scheme of the invention: the fiber reinforced material can be one or more of glass fiber, carbon fiber, aramid fiber and the like; specifically, the aramid fiber can be Kevlar, which is an aramid fiber material product developed by Dupont of America.
As a still further scheme of the invention: the fiber reinforced material is carbon fiber cloth and/or glass fiber cloth.
Preferably, the fiber reinforcing material adopts 3K plain woven carbon fiber cloth with the thickness of 0.111 mm.
As a still further scheme of the invention: the number of the coating layers for bonding and coating is 1-3, and according to the stress conditions of different parts, 3 layers are laid on the part with larger stress, and 1-2 layers are laid on the part without stress.
As a still further scheme of the invention: the adhesive used in the adhesive coating comprises the following raw materials in parts by weight: 90-110 parts of epoxy resin, 9-11 parts of acetone and 22-26 parts of curing agent.
As a still further scheme of the invention: the preparation method of the adhesive used in the adhesive coating comprises the following steps: weighing the epoxy resin and the acetone according to the proportion, stirring and mixing uniformly, adding the curing agent, and stirring fully and uniformly for later use.
Specifically, the epoxy resin can be a product with a product model of WSP6101 of New materials of the Neisseria herbeckiana chemical industry Co., Ltd, and the curing agent can be an epoxy resin curing agent with a product model of E-999.
Preferably, the adhesive used for adhesive coating comprises the following raw materials in parts by weight: 100 parts of epoxy resin, 10 parts of acetone and 25 parts of curing agent.
As a still further scheme of the invention: the specific method for bonding and coating comprises the steps of pasting the fiber reinforced material on the surface of a 3D printing substrate subjected to surface chemical treatment layer by using an adhesive, pressing the fiber reinforced material by a brush to enable the content of the adhesive to be uniform, removing bubbles, standing for 24 hours in a dry environment, and removing redundant flash by using an art designer knife or an electric angle grinder after primary curing.
As a still further scheme of the invention: 3D prints still including the step of 3D modeling, and is concrete, carries out 3D modeling through 3D modeling software such as SolidWorks, Unigraphics NX to treat the unmanned aerial vehicle feed bin of shaping, utilizes software curved surface thickening function, carries out thickening to unmanned aerial vehicle feed bin internal surface, obtains an unmanned aerial vehicle feed bin model that the wall thickness is at 0.8-1.5mm, spreads into the 3D printer after handling model file section to choose for use matrix material to carry out 3D and print.
As a still further scheme of the invention: the basic process of 3D printing is an existing 3D printing molding process, and specific operating parameters and the like are selected according to requirements, which are not limited herein and generally relate to specific materials and product requirements.
As a still further scheme of the invention: and the resin-rich layer is obtained by coating a layer of the adhesive on the surface of the primarily cured 3D printing substrate with the fiber reinforced layer again, and standing for 30-36 hours for curing after coating.
As a still further scheme of the invention: and in the polishing, No. 400, No. 600, No. 800 and No. 1000 water-milled sand paper are respectively used for sequentially polishing the surface of the resin-rich layer, and a pneumatic polishing machine or manual polishing can be adopted to ensure that the surface is smooth and has no protrusion, and the surface roughness Ra is not less than 0.8 mu m.
As a still further scheme of the invention: the spray-on nitro paint was prepared using a nitro paint from japan county corporation (product model C33) and a nitro oily solvent from japan county corporation (product model T104) in a ratio of 1: 2-2.2, and then spraying the surface of the polished 3D printing substrate by using a paint spray gun for 2-3 times at intervals of 20-30 min.
As a still further scheme of the invention: the ultraviolet-resistant varnish for spraying was prepared by using an ultraviolet-resistant varnish (product model GX113) from Japan county and a nitro oily solvent (product model T104) from Japan county in a ratio of 1: 2-3, spraying the surface of the 3D printing matrix with the paint coating for 2-3 times at intervals of 20-30min, standing in a cool environment, and naturally drying at a low temperature to obtain an anti-aging, smooth and bright-colored product outer surface, so that the anti-aging performance of the unmanned aerial vehicle bin is improved.
Specifically, epoxy resin in a composite material formed by the adhesive and the fiber reinforced material and polylactic acid used for 3D printing have the problems of long-time exposure, aging and brittleness, and the outer surface of a product with aging resistance, smoothness and bright color is obtained by spraying ultraviolet resistant gloss oil containing an ultraviolet absorbent.
It should be noted that, the composite material that adhesive and fiber reinforcement constitute has better mechanical properties, but to the more complicated condition in part surfaces such as unmanned aerial vehicle feed bin, the shaping is comparatively difficult, and the cost is also comparatively expensive simultaneously. Therefore, the composite material is used on the surfaces of parts such as an unmanned aerial vehicle bin and the like as a mechanical enhancement layer, the difficult problem of complex part forming is avoided, and meanwhile due to the addition of the composite material, the parts obtain expected mechanical properties.
As a still further scheme of the invention: the rapid forming process of the unmanned aerial vehicle bin is applied to production of thermoplastic material products.
As a still further scheme of the invention: unmanned aerial vehicle feed bin prints the base member including the D that is used for constituting the cavity, 3D prints the base member outside and has set gradually fiber reinforcement layer, rich resin layer, paint layer and ultraviolet resistance coating.
Compared with the prior art, the invention has the beneficial effects that:
the rapid forming process for the unmanned aerial vehicle bin provided by the embodiment of the invention can be used for preparing the unmanned aerial vehicle bin, 3D printing is carried out by adopting FDM process, the time for manufacturing a mould is saved, the manufacturing period is short, the equipment requirement is low, the processing cost is low, the purpose of reducing the structural weight can be realized by reducing the filling rate, meanwhile, the structural strength is improved by adopting an adhesive to adhere and coat a fiber reinforced material on the surface of a 3D printing matrix, the rapid processing can be realized, the surface of the matrix material is subjected to surface chemical treatment, and the ultraviolet-resistant gloss oil is sprayed and coated to form an ultraviolet-resistant coating, so that the anti-aging protection is realized, and the brittle; the product prepared by the invention is light in weight, is reduced by one third compared with the traditional mode, is suitable for small-batch and single-room production, solves the problems of low product structural strength and easy brittle fracture and deformation after being exposed to strong light for a long time in the small-batch production of the existing unmanned aerial vehicle bin forming method, and has wide market prospect.
Drawings
Fig. 1 is a schematic structural diagram of an unmanned aerial vehicle bunker provided in an embodiment of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 schematically illustrates a surface partial schematic view before and after surface chemical treatment of a 3D printing substrate in an unmanned aerial vehicle silo preparation process according to an embodiment of the present invention.
In the figure: 1-unmanned aerial vehicle stock house; 2-3D printing a substrate; 3-a fiber-reinforced layer; 4-a resin rich layer; 5-paint layer; 6-ultraviolet resistant coating.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention. In order to make the technical solution of the present invention clearer, process steps and device structures well known in the art are omitted here.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
The utility model provides an unmanned aerial vehicle feed bin rapid prototyping technology, unmanned aerial vehicle feed bin rapid prototyping technology include following step:
1)3D printing of a substrate: 3D printing is carried out on the base material according to the shape to be formed of an unmanned aerial vehicle bin by adopting the existing FDM process, so that a 3D printing base body is obtained;
2) chemical treatment and coating of the fibrous reinforcement: carrying out surface chemical treatment on the 3D printing substrate, then bonding and coating the 3D printing substrate subjected to surface chemical treatment with an adhesive to form a fiber reinforced material, and then cutting off redundant flash to obtain the 3D printing substrate with a fiber reinforced layer;
3) coating a rich resin layer: coating the surface of the 3D printing substrate with the fiber reinforced layer with the adhesive in the step 2) to form a resin-rich layer, and then polishing the surface until the surface roughness Ra is not less than 0.8 mu m to obtain a polished 3D printing substrate; the polishing is to sequentially polish the surface of the resin-rich layer by using No. 400, No. 600, No. 800 and No. 1000 water-milled sand paper, so that the surface is smooth and has no protrusion, and the surface roughness Ra is not less than 0.8 mu m;
4) spraying an oil paint layer: spraying nitro paint on the surface of the polished 3D printing substrate to obtain a 3D printing substrate with a paint layer;
5) spraying an ultraviolet-resistant coating: and spraying ultraviolet-resistant gloss oil on the surface of the 3D printing substrate with the paint layer to form an ultraviolet-resistant coating, standing for 24 hours in a cool environment, finishing a workpiece, and obtaining the unmanned aerial vehicle bin.
In the embodiment of the invention, the matrix material is polylactic acid. The fiber reinforced material adopts 3K plain woven carbon fiber cloth with the thickness of 0.111 mm.
In the embodiment of the present invention, the basic process of 3D printing is an existing 3D printing and forming process, and specific operating parameters and the like are selected according to requirements, which are not limited herein and generally relate to specific materials and product requirements. Surface chemical treatment uses the brush to be in 3D prints the inside and outside surface of base member and applies 1 chloroform (purity is greater than 99%) on a brush, dry naturally in the ventilation environment after applying paint the completion every time, it is visible after drying 3D prints the base member surface and is covered with glued membrane material, finds that it need not mend the brush to have cornea dress cover, through right 3D prints the inside and outside surface spraying chloroform of base member as chemical polishing liquid, removes in cooperation physical surface treatment behind burr and the bearing structure on 3D printing base member surface, further gets rid of surperficial sharp-pointed burr to utilize the solubility reinforcing of chemical polishing liquid 3D prints the anti brittle failure performance of base member in the vertical direction.
The surface chemical treatment uses chloroform, and has good solubility in polylactic acid. Therefore, the surface of the polylactic acid is dissolved by brushing chloroform on the surface of the 3D printing substrate, the interlayer gap is filled with the chloroform dissolved with the polylactic acid, the chloroform has extremely strong volatility, and after the chloroform volatilizes, the polylactic acid is deposited in the interlayer gap, so that the adhesion surface between material layers is increased, and the strength of the printing material is further improved.
In the embodiment of the invention, the number of the coating layers of the bonding coating is 3, and the adhesive used in the bonding coating is prepared from the following raw materials: 90g of epoxy resin, 9g of acetone and 22g of curing agent. The specific method for bonding and coating comprises the steps of pasting the fiber reinforced material on the surface of a 3D printing substrate subjected to surface chemical treatment layer by using an adhesive, pressing the fiber reinforced material by a brush to enable the content of the adhesive to be uniform, removing bubbles, standing for 24 hours in a dry environment, and removing redundant flash by using an art designer knife or an electric angle grinder after primary curing.
In the present example, the spray-applied nitro-paint was prepared using a mixture of a nitro-paint from japan county corporation (product model C33) and a nitro-oily solvent from japan county corporation (product model T104) in a ratio of 1: 2, and then spraying the ground 3D printing substrate surface with a paint spray gun 2 times at 20min intervals.
In the examples of the present invention, the spray ultraviolet-resistant gloss oil was prepared using an ultraviolet-resistant gloss oil (product model GX113) from japan county corporation and a nitro oily solvent (product model T104) from japan county corporation in a ratio of 1: 2, then the 3D printing substrate surface with the paint coating is sprayed for 2 times at intervals of 20min, and then the substrate is stood in a cool environment to obtain the outer surface of an anti-aging, smooth and colorful product, so that the anti-aging performance of the unmanned aerial vehicle bin is improved.
Example 2
The utility model provides an unmanned aerial vehicle feed bin rapid prototyping technology, unmanned aerial vehicle feed bin rapid prototyping technology include following step:
1)3D printing of a substrate: 3D modeling is carried out on an unmanned aerial vehicle bin through 3D modeling software such as SolidWorks and Unigraphics NX, thickening is carried out on the inner surface by utilizing a software curved surface thickening function, an unmanned aerial vehicle bin model with the wall thickness of 0.8mm is obtained, a model file is sliced and then is transmitted into a 3D printer, 3D printing is carried out on a substrate material selected, namely, the substrate material is subjected to 3D printing according to the shape to be formed of the unmanned aerial vehicle bin by adopting the existing FDM process, and a 3D printing substrate is obtained;
2) physical surface treatment: removing burrs and supporting structures on the surface of the 3D printing substrate by using a file and sharp-nose pliers;
3) chemical treatment and coating of the fibrous reinforcement: carrying out surface chemical treatment on the 3D printing substrate subjected to the physical surface treatment, then bonding and coating the 3D printing substrate subjected to the surface chemical treatment with an adhesive to form a fiber reinforced material, and then cutting off redundant flash to obtain a 3D printing substrate with a fiber reinforced layer; the surface chemical treatment is to brush chloroform (with the purity of more than 99%) for 2 times on the inner surface and the outer surface of the 3D printing substrate by using a brush, naturally dry the substrate in a ventilated environment after each brushing, and after the drying, the surface of the 3D printing substrate is covered by a film-like substance, and the fact that no cornea is covered by a covering substance needs to be brushed is found, wherein the specific brushing amount is selected according to the requirement, and is not limited, the chloroform is sprayed on the inner surface and the outer surface of the 3D printing substrate to serve as a chemical polishing solution, after burrs and a supporting structure on the surface of the 3D printing substrate are removed by matching with physical surface treatment, sharp burrs on the surface are further removed, and the anti-brittle fracture performance of the 3D printing substrate in the vertical direction is enhanced by using the solubility of the chemical;
4) coating a rich resin layer: coating the surface of the 3D printing substrate with the fiber reinforced layer with the adhesive in the step 2) to form a resin-rich layer, and then polishing the surface until the surface roughness Ra is not less than 0.8 mu m to obtain a polished 3D printing substrate;
5) spraying an oil paint layer: spraying nitro paint on the surface of the polished 3D printing substrate to obtain a 3D printing substrate with a paint layer;
6) spraying an ultraviolet-resistant coating: and spraying ultraviolet-resistant gloss oil on the surface of the 3D printing substrate with the paint layer to form an ultraviolet-resistant coating, standing for 24 hours in a cool environment, finishing a workpiece, and obtaining the unmanned aerial vehicle bin.
In the embodiment of the invention, the substrate material is ABS plastic. The fiber reinforced material adopts aramid fiber cloth with the thickness of 0.111 mm. The number of the coating layers of the bonding coating is 1, and the adhesive used in the bonding coating is prepared from the following raw materials: 110g of epoxy resin, 11g of acetone and 26g of curing agent. The specific method for bonding and coating comprises the steps of pasting the fiber reinforced material on the surface of a 3D printing substrate subjected to surface chemical treatment layer by using an adhesive, pressing the fiber reinforced material by a brush to enable the content of the adhesive to be uniform, removing bubbles, standing for 24 hours in a dry environment, and removing redundant flash by using an art designer knife or an electric angle grinder after primary curing. And in the polishing, No. 400, No. 600, No. 800 and No. 1000 water-milled sand paper are respectively used for sequentially polishing the surface of the resin-rich layer, and a pneumatic polishing machine or manual polishing can be adopted to ensure that the surface is smooth and has no protrusion, and the surface roughness Ra is not less than 0.8 mu m.
In the present example, the spray-applied nitro-paint was prepared using a mixture of a nitro-paint from japan county corporation (product model C33) and a nitro-oily solvent from japan county corporation (product model T104) in a ratio of 1: 2.2, and then spraying the ground 3D printing substrate surface with a paint spray gun 3 times at intervals of 30min each time.
In the examples of the present invention, the spray ultraviolet-resistant gloss oil was prepared using an ultraviolet-resistant gloss oil (product model GX113) from japan county corporation and a nitro oily solvent (product model T104) from japan county corporation in a ratio of 1: 3, then the 3D printing substrate surface with the paint coating is sprayed for 3 times at intervals of 30min, and then the substrate is stood in a cool environment to obtain the outer surface of an anti-aging, smooth and colorful product, so that the anti-aging performance of the unmanned aerial vehicle bin is improved.
Example 3
The utility model provides an unmanned aerial vehicle feed bin rapid prototyping technology, unmanned aerial vehicle feed bin rapid prototyping technology include following step:
1)3D printing of a substrate: 3D modeling is carried out on an unmanned aerial vehicle bin through 3D modeling software such as SolidWorks and Unigraphics NX, the inner surface of the bin is thickened by utilizing the curved surface thickening function of the software to obtain an unmanned aerial vehicle bin model with the wall thickness of 1mm, a model file is sliced and then is transmitted into a 3D printer, a base material is selected for 3D printing, namely, the base material is subjected to 3D printing according to the shape to be formed of the unmanned aerial vehicle bin by adopting the existing FDM process to obtain a 3D printing base body;
2) physical surface treatment: removing burrs and supporting structures on the surface of the 3D printing substrate by using a file and sharp-nose pliers;
3) chemical treatment and coating of the fibrous reinforcement: carrying out surface chemical treatment on the 3D printing substrate, then bonding and coating the 3D printing substrate subjected to surface chemical treatment with an adhesive to form a fiber reinforced material, and then cutting off redundant flash to obtain the 3D printing substrate with a fiber reinforced layer;
4) coating a rich resin layer: coating the surface of the 3D printing substrate with the fiber reinforced layer with the adhesive in the step 2) to form a resin-rich layer, and then polishing the surface until the surface roughness Ra is not less than 0.8 mu m to obtain a polished 3D printing substrate;
5) spraying an oil paint layer: spraying nitro paint on the surface of the polished 3D printing substrate to obtain a 3D printing substrate with a paint layer;
6) spraying an ultraviolet-resistant coating: and spraying ultraviolet-resistant gloss oil on the surface of the 3D printing substrate with the paint layer to form an ultraviolet-resistant coating, standing for 24 hours in a cool environment, finishing a workpiece, and obtaining the unmanned aerial vehicle bin.
In the embodiment of the invention, the matrix material is polylactic acid. The fiber reinforced material adopts the alternate combination of glass fiber cloth and carbon fiber cloth.
In the embodiment of the present invention, the basic process of 3D printing is an existing 3D printing and forming process, and specific operating parameters and the like are selected according to requirements, which are not limited herein and generally relate to specific materials and product requirements. Usually, polylactic acid is selected as the matrix material (density of 1.2-1.3 g/cm)3) The FDM fused deposition 3D printing machine is a fully-closed type 3D printing machine (a manufacturer is Guangzhou best-setting United technology company), the feeding size is 1.75mm of polylactic acid filament materials, the machine printing parameters are set to be 50 ℃ of hot bed temperature, 220 ℃ of printing temperature, 60-80mm/s of printing speed, 15% -100% of filling density, 0.1-0.2mm of printing layer thickness and 0.8-2.0mm of printing wall thickness, the polylactic acid filament materials are dried for 2-4 hours in a 50 ℃ constant temperature environment and then are loaded into the 3D printing machine, and a 3D printing substrate is obtained through printing according to the parameters.
In the embodiment of the invention, the surface chemical treatment is to brush 2 times of chloroform (with a purity of more than 99%) on the inner and outer surfaces of the 3D printing substrate by using a brush, naturally dry the substrate in a ventilated environment after each brushing, and after the substrate is dried, the surface of the 3D printing substrate is covered by a film-like substance, and the substrate is not covered by a cornea, the specific brushing amount is selected according to the requirement, and is not limited, chloroform is sprayed on the inner and outer surfaces of the 3D printing substrate to serve as a chemical polishing solution, after burrs and a supporting structure on the surface of the 3D printing substrate are removed by matching with physical surface treatment, sharp burrs on the surface are further removed, and the anti-brittle failure performance of the 3D printing substrate in the vertical direction is enhanced by using the solubility of the chemical polishing solution.
In the embodiment of the invention, the number of the coating layers of the bonding coating is 3. The adhesive used in the bonding and coating is prepared from the following raw materials: 100kg of epoxy resin, 10kg of acetone and 25kg of curing agent. The specific method for bonding and coating comprises the steps of pasting the fiber reinforced material on the surface of a 3D printing substrate subjected to surface chemical treatment layer by using an adhesive, pressing the fiber reinforced material by a brush to enable the content of the adhesive to be uniform, removing bubbles, standing for 24 hours in a dry environment, and removing redundant flash by using an art designer knife or an electric angle grinder after primary curing.
In the embodiment of the invention, the polishing is to sequentially polish the surfaces of the resin-rich layers by using No. 400, No. 600, No. 800 and No. 1000 water-milled sand paper, and a pneumatic polisher or manual polishing can be adopted to ensure that the surfaces are smooth and have no protrusions, and the surface roughness Ra is not less than 0.8 mu m.
In the present example, the spray-applied nitro-paint was prepared using a mixture of a nitro-paint from japan county corporation (product model C33) and a nitro-oily solvent from japan county corporation (product model T104) in a ratio of 1: 2, and then spraying the surface of the polished 3D printing substrate with a paint spray gun for 3 times at intervals of 30 min.
In the examples of the present invention, the spray ultraviolet-resistant gloss oil was prepared using an ultraviolet-resistant gloss oil (product model GX113) from japan county corporation and a nitro oily solvent (product model T104) from japan county corporation in a ratio of 1: 3, then the 3D printing substrate surface with the paint coating is sprayed for 3 times at intervals of 30min, and then the substrate is stood in a cool environment to obtain the outer surface of an anti-aging, smooth and colorful product, so that the anti-aging performance of the unmanned aerial vehicle bin is improved.
Example 4
The unmanned aerial vehicle bin 1 prepared by the unmanned aerial vehicle bin rapid prototyping process in embodiment 3 is adopted, and specifically, fig. 1-2 schematically illustrate a schematic structural view of the unmanned aerial vehicle bin 1 prepared by the unmanned aerial vehicle bin rapid prototyping process according to the embodiment of the invention.
Wherein, unmanned aerial vehicle feed bin 1 prints base member 2 including the 3D that is used for constituting the cavity, 3D prints 2 outsides of base member and has set gradually fiber reinforcement layer 3, rich resin layer 4, paint layer 5 and ultraviolet resistance coating 6.
Further, in the embodiment of the invention, a plant protection unmanned aerial vehicle is provided, and the plant protection unmanned aerial vehicle comprises the unmanned aerial vehicle bin.
In an embodiment of the present invention, in the surface chemical treatment of the rapid prototyping process for an unmanned aerial vehicle storage bin in embodiment 3, a brush is used to brush chloroform (with a purity greater than 99%) on the inner and outer surfaces of the 3D printing substrate for 2 times, the brush is naturally dried in a ventilation environment after each brushing, it is seen that the surface of the 3D printing substrate is covered with a film-like substance after drying, it is found that no covering object for coating a cornea needs to be additionally brushed, a specific brushing amount is selected according to a requirement, and is not limited herein. Fig. 3 schematically illustrates a partial schematic surface view before and after surface chemical treatment of a 3D printing substrate in an unmanned aerial vehicle bin preparation process according to an embodiment of the present invention, where fig. 3 (a) is a schematic surface view before surface chemical treatment, fig. 3 (b) is a schematic surface view after surface chemical treatment, and a chloroform layer is applied to dissolve a polylactic acid surface, and the chloroform layer gap is filled with the chloroform dissolved polylactic acid, and the chloroform has a very high volatility, and after the chloroform is volatilized, the polylactic acid is re-precipitated and deposited in the layer gap. The surface chemical treatment uses chloroform, and has good solubility to polylactic acid, so that the surface of the polylactic acid is dissolved by brushing chloroform on the surface of the 3D printing substrate, and after the chloroform is volatilized, the polylactic acid is deposited in gaps between layers, so that the adhesion surface between the material layers is increased, and the strength of the printing material is further improved.
Example 5
Compared to example 4, the same as example 4 except that the fibrous reinforcing material was aramid fiber.
Example 6
The same as example 4 except that the fiber-reinforced material was glass fiber cloth, carbon fiber cloth and aramid fiber cloth, which were alternately used in combination, was used as compared with example 4.
Comparative example 1
The unmanned aerial vehicle bin is prepared according to the technical scheme that in the prior art, polyethylene is adopted for blow molding or plastic uptake and then welding.
Performance testing
The rapid forming process of the unmanned aerial vehicle bin in the embodiment 4 is compared with the existing forming process of blowing or sucking the polyethylene and then welding in the comparative example 1, meanwhile, the prepared unmanned aerial vehicle bin is subjected to strength performance detection and comparison, and the specific result is shown in table 1.
Table 1 comparative results table
As can be seen from table 1, the rapid forming process for the unmanned aerial vehicle bin provided by the embodiment of the invention has the following beneficial effects that the rapid forming process for the unmanned aerial vehicle bin can be used for preparing the unmanned aerial vehicle bin, 3D printing is performed by adopting the FDM process, the time for manufacturing a mold is saved, the manufacturing period is short, an injection molding machine and a plastic sucking machine are not needed, the equipment requirement is low, the weight of a product prepared by the rapid forming process is light, one third of the weight is reduced compared with the traditional mode, the rapid forming process is suitable for small-batch and single-batch production, the problems that the product structural strength is low in the small-batch production and the product is easy to crack and deform after being exposed to strong light for.
It should be noted that, in order to reduce the processing cost, shorten the manufacturing period, and combine the actual production requirements of the plant protection unmanned aerial vehicle stock bin (the requirements on the product size precision are not high, and the requirements on the stock bin thickness are not high), the FDM fused lamination molding scheme is adopted to establish the 3D printing substrate of the unmanned aerial vehicle stock bin, and 3D printing can achieve the purpose of reducing the structural weight by reducing the filling rate because the filling rate of the substrate material can be adjusted by itself; in order to improve the structural strength of the product, the fiber reinforced material is bonded and coated on the surface of the 3D printing substrate by adopting the adhesive, so that the structural strength is improved, the rapid processing can be realized without a die, the cost is reduced, and the manufacturing period is shortened; in order to solve the problems of easy brittle fracture and aging resistance of a 3D printing substrate material, the surface of the substrate material is subjected to surface chemical treatment, and an ultraviolet-resistant coating is formed by spraying and coating ultraviolet-resistant gloss oil, so that the anti-aging protection is realized, and the substrate material is not easy to brittle fracture.
It needs to be further explained that, although the FDM process can also be adopted to perform the integral 3D printing according to the shape to be formed of the unmanned aerial vehicle bin, the operation is simple and convenient, but the product has a heavy weight, is limited by the inherent defects of the 3D printing, has a low structural strength, and is easily brittle and deformable after being exposed to strong light for a long time; the composite material (namely the composite material formed by the adhesive and the fiber reinforced material) can be integrally processed, so that the composite material is light in weight, good in mechanical property and not easy to crack, but high in cost, long in manufacturing period, difficult to realize complex curved surfaces, and further increases the cost due to the need of a mold; according to the embodiment of the invention, the 3D printing and the composite material are combined and processed, the original integral unmanned aerial vehicle bin is layered, different processing modes are adopted for different functional layers, and the short-period and low-cost development is realized in the field of single piece or small batch of plant protection unmanned aerial vehicle bins.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (8)
1. The utility model provides an unmanned aerial vehicle feed bin rapid prototyping technology which characterized in that, unmanned aerial vehicle feed bin rapid prototyping technology include following step:
1)3D printing is carried out on the base material according to the shape to be formed of an unmanned aerial vehicle bin by adopting an FDM (frequency division multiplexing) process, so that a 3D printing base body is obtained;
2) carrying out surface chemical treatment on the 3D printing substrate, then bonding and coating the 3D printing substrate subjected to surface chemical treatment with an adhesive to form a fiber reinforced material, and then cutting off redundant flash to obtain the 3D printing substrate with a fiber reinforced layer;
3) coating the adhesive on the surface of the 3D printing substrate with the fiber reinforced layer to form a resin-rich layer, and then polishing the surface to obtain a polished 3D printing substrate;
4) spraying nitro paint on the surface of the polished 3D printing substrate to obtain a 3D printing substrate with a paint layer;
5) and spraying ultraviolet-resistant gloss oil on the surface of the 3D printing substrate with the paint layer to form an ultraviolet-resistant coating, so as to obtain the unmanned aerial vehicle bin.
2. The rapid unmanned aerial vehicle bin molding process of claim 1, wherein the base material is polylactic acid or ABS plastic.
3. The unmanned aerial vehicle bin rapid prototyping process of claim 1, wherein said 3D printed substrate further comprises a physical surface treatment step prior to the surface chemical treatment.
4. The rapid unmanned aerial vehicle bin molding process according to claim 1, wherein the surface chemical treatment is to brush chloroform on the inner surface and the outer surface of the 3D printing substrate and dry the substrate.
5. The rapid prototyping process in unmanned aerial vehicle bin of claim 1, wherein the fiber reinforcement material is one or more of glass fiber, carbon fiber or aramid fiber.
6. The rapid forming process for the unmanned aerial vehicle bin according to claim 1, wherein the adhesive used for the adhesive coating comprises the following raw materials in parts by weight: 90-110 parts of epoxy resin, 9-11 parts of acetone and 22-26 parts of curing agent.
7. An unmanned aerial vehicle storage bin manufactured by the unmanned aerial vehicle storage bin rapid prototyping process as defined in any one of claims 1-6.
8. The unmanned aerial vehicle feed bin of claim 7, wherein the unmanned aerial vehicle feed bin comprises a 3D printing substrate for forming the cavity, and a fiber reinforced layer, a resin rich layer, a paint layer and an ultraviolet-resistant coating are sequentially arranged on the outer side of the 3D printing substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010205994.6A CN111421812A (en) | 2020-03-23 | 2020-03-23 | Rapid forming process for unmanned aerial vehicle stock bin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010205994.6A CN111421812A (en) | 2020-03-23 | 2020-03-23 | Rapid forming process for unmanned aerial vehicle stock bin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111421812A true CN111421812A (en) | 2020-07-17 |
Family
ID=71548522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010205994.6A Withdrawn CN111421812A (en) | 2020-03-23 | 2020-03-23 | Rapid forming process for unmanned aerial vehicle stock bin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111421812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665123A (en) * | 2021-09-18 | 2021-11-19 | 夏季风 | Mold-free forming process for preparing unmanned aerial vehicle part |
-
2020
- 2020-03-23 CN CN202010205994.6A patent/CN111421812A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665123A (en) * | 2021-09-18 | 2021-11-19 | 夏季风 | Mold-free forming process for preparing unmanned aerial vehicle part |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103963319B (en) | A kind of matrix material adds prepreg/Resin Film Infusion curing molding method altogether of muscle wallboard | |
| WO2016127521A1 (en) | Method for manufacturing composite product made of short-fibre reinforced thermosetting resin by means of 3d printing | |
| CN105153638B (en) | A kind of glass reinforced plastic and its method for making sculpture | |
| CN105216345B (en) | RTM global formation orthogonal stiffenerses structure member (cover)s and its manufacture method | |
| CN103407175B (en) | A kind of integral forming method of fiber-reinforced resin matrix compound material wing box | |
| CN105984154A (en) | Forming method of U-shaped beam type composite part | |
| CN104766934B (en) | A kind of preparation method of sandwich structure for lightweight battery case | |
| CN106232314B (en) | Fibre reinforced composites molded product and its manufacturing method | |
| CN105922703B (en) | A kind of thin-walled foam interlayer structure compound material antenna house preparation method | |
| CN108891040B (en) | Manufacturing method of composite horizontal tail wing of small and medium-sized unmanned aerial vehicle | |
| CN101725464A (en) | Method for making vane of wind-driven generator by adopting ultra-high strength polyethylene fiber composites | |
| CN102230448A (en) | Wind power generator blade of bamboo fibre reinforced composite material and manufacture method thereof | |
| CN106828967A (en) | Full-height foaming structure multi-rotor unmanned aerial vehicle manufacture method | |
| CN103897347A (en) | Thermosetting resin composition, and prepreg and laminated board prepared from the resin composition | |
| CN110216902B (en) | Net size RTM (resin transfer molding) forming method for metal rudder core and resin matrix composite material | |
| CN109703057A (en) | A kind of composite product autoclave molding technique covering, and preparation method thereof | |
| CN111421812A (en) | Rapid forming process for unmanned aerial vehicle stock bin | |
| CN103935042A (en) | Manufacturing method for hollow rotor of unmanned aerial vehicle and hollow rotor | |
| CN104497484B (en) | A kind of preparation method of 3 D weaving rubber coating carbon fibre reinforced composite | |
| CN110588018A (en) | Coating forming method of in-mold gel coat for wind driven generator blade and wind driven generator blade forming method | |
| JP2009012441A (en) | Method for manufacturing fiber-reinforced resin molded article capable of recycling | |
| CN111055517B (en) | XPS extruded sheet inner core and epoxy resin composite material glider wing and preparation method thereof | |
| CN110774615B (en) | Construction method for vacuum plastic-suction forming of glass fiber reinforced plastic theme prop | |
| CN106985421A (en) | A kind of production technology of integrally formed full carbon fibre hub | |
| CN104149362A (en) | Integrated molding and manufacturing method of megawatt wind power cabin cover by pouring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200717 |