Method for manufacturing airframe of model aircraft by using environment-friendly material and product thereof

Abstract

The invention provides a method for manufacturing an aircraft body of a model aircraft by using an environment-friendly material and a product thereof. Biomass plastic made of the environment-friendly material is prepared, and the biomass plastic is made into a plurality of injection molding parts through an injection molding device; preparing a skin mold, covering the injection molding part with a skin thermal shrinkage film, then putting the injection molding part and the skin thermal shrinkage film into the skin mold, heating the skin mold to enable the skin thermal shrinkage film to tightly cover the outer side of the injection molding part so as to form a skin, and cutting off the redundant skin thermal shrinkage film while forming the skin; the more than one component with the formed skin is combined into a body of the model aircraft; a traditional production mode of complete manual assembly can be replaced, automatic production can be achieved, the productivity can be improved, the manufacturing cost can be reduced, environment-friendly materials are completely used, and Balsam wood can be replaced to reduce consumption of natural resources.

Description

Technical Field

[0001] The present application relates to a method for manufacturing a remote-controlled model aircraft and products thereof, and in particular to a method for manufacturing a model aircraft body using environmentally friendly materials and products thereof. Background Art

[0002] Generally speaking, the airframe of an aircraft (commonly known as an airplane) refers to the skeleton of the aircraft and its mechanical structure, generally including the fuselage, landing gear, tail and wings, but excluding the propulsion system, that is, the complete structure without the engine.

[0003] The most common type of traditional remote control model aircraft is the fixed-wing aircraft. Compared with helicopters with rotor-wing designs, fixed-wing aircraft are easier to control, so fixed-wing aircraft are still the first choice for many beginners of remote control model aircraft. Balsa wood (scientific name: Ochroma pyramidale), also known as balsa tree, grows fast. Because it is brittle and light, with a density of about 0.05 to 0.15, it is easy to process and does not deform. It is the main material traditionally used to make the body of remote control model aircraft.

[0004] The known method of using balsa wood to make the body of a model airplane is basically to cut the balsa wood into many small parts according to the structural drawing of the body of the model airplane, and then assemble and glue these parts made of balsa wood one by one to make the body of the model airplane (such as Figure 1 The fuselage basically includes: a fuselage 10, a tail 11, a rudder 13 and a wing 12. The components constituting the skeleton of the wing 12 can be further subdivided into longitudinal components (including edge strips 121, webs, and stringers 122), transverse components (including ribs 123), and then a skin (mostly made of waterproof paper or plastic film) is pasted on the surface of the fuselage. This process of pasting the skin is commonly known as skinning. At this point, the fuselage of the model aircraft is completed. Finally, electronic devices and power units are configured inside the fuselage to complete the production of the remote control model aircraft.

[0005] During the entire manufacturing process of remote-controlled model aircraft, the production of the aircraft body still relies entirely on manual labor. The large number of balsa wood parts requires a lot of time and steps, and the production speed is slow and requires a lot of manpower. As a result, the cost and selling price of remote-controlled model aircraft made of balsa wood remain high, making it difficult for manufacturers to increase production capacity and increase profits.

[0006] On the other hand, players who have actual experience in operating remote control model airplanes know that remote control model airplanes often collide or fall, and the aircraft body made of balsa wood can easily cause serious damage. The expensive aircraft body will also cause a huge burden for consumers. Summary of the invention

[0007] The technical problem to be solved by the present application is to provide a method for manufacturing the body of a model aircraft using environmentally friendly materials and a product thereof, which has the advantages of increasing production capacity and reducing manufacturing costs.

[0008] In order to solve the above technical problems, the present application proposes a method for making a model aircraft body using environmentally friendly materials. A preferred embodiment of the method of the present application includes the following steps:

[0009] Prepare bioplastics made from environmentally friendly materials;

[0010] Using an injection molding device to form an injection-molded component from the bioplastic, the injection-molded component being one of a plurality of components for constituting a body of a model aircraft;

[0011] Prepare a skin mold, the skin mold comprises an upper mold, a lower mold, and a skin mold cavity, the skin mold cavity is between the upper mold and the lower mold, and the shape of the skin mold cavity is determined by the shape of the predetermined skin of the injection molded part;

[0012] Covering the injection molded component with a skin heat shrink film, and then placing the injection molded component and the skin heat shrink film into a skin mold cavity of a skin mold;

[0013] Heating the skin mold to cause the skin heat shrink film to shrink and tightly cover the outer side of the injection molded part to form a skin;

[0014] Cut off excess skin heat shrink film on injection molded parts; and

[0015] Combining one or more injection-molded parts with formed skins into the fuselage of a model aircraft.

[0016] As a preferred embodiment of the method of the present application, the bioplastic is made of biodegradable plastic or recyclable plastic mixed with natural materials, and the natural materials include: bamboo powder, sugar cane, potato, wheat, cassava, and corn starch.

[0017] As a preferred embodiment of the method of the present application, the bioplastic is made by mixing polylactic acid (PLA) resin and bamboo powder.

[0018] As a preferred embodiment of the method of the present application, the step of heating the skin mold injects hot air into the skin mold cavity, and the skin mold cavity is reserved with an outlet for exhausting the hot air. The heat of the hot air is used to cause the skin heat shrink film to shrink and tightly cover the outside of the injection molded part to form a skin.

[0019] As a preferred embodiment of the method of the present application, the step of cutting off the excess skin heat shrink film on the injection-molded component includes using ultrasonic welding to fuse and adhere the skin heat shrink film to the outer side of the injection-molded component, and configuring cutters on the upper mold and the lower mold, while the upper mold and the lower mold use ultrasonic waves to fuse and adhere the skin heat shrink film to the outer side of the injection-molded component, and using the cutter to cut and remove the excess skin by thermal cutting.

[0020] As a preferred embodiment of the method of the present application, it includes: manufacturing an injection-molded component through a single injection molding action.

[0021] As a preferred embodiment of the method of the present application, it includes: manufacturing an injection-molded component through multiple injection-molding actions performed in sequence and continuously, wherein the multiple injection-molding molds used in the multiple injection-molding actions performed in sequence and continuously are a continuous mold.

[0022] One aspect of the present application includes a fuselage of a model aircraft manufactured by the method described, wherein the fuselage of the model aircraft includes a plurality of injection-molded parts, and the injection-molded parts can be combined with each other to form the fuselage of the model aircraft.

[0023] As a preferred embodiment of the fuselage of the model aircraft manufactured by the method described in the present application, the injection-molded part is a single component formed in one piece.

[0024] As a preferred embodiment of the fuselage of a model aircraft made by the method described in the present application, the injection-molded part is completed by a plurality of components that can be combined with each other through, for example, pins or latches.

[0025] The advantages and effects of this application are: replacing the traditional production method of complete manual assembly can greatly reduce labor production costs, the body of the model aircraft is made entirely of environmentally friendly materials without plastic, which can replace balsa wood and reduce the consumption of natural resources, and combined with injection molding and fully automated production processes and equipment, automated production can increase production capacity and reduce manufacturing costs, creating a win-win situation for producers and consumers.

[0026] The details of other effects and embodiments of the present application are described below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a diagram of the traditional use of balsa wood to make the fuselage of a model aircraft;

[0029] Figure 2 is an action flow chart of an embodiment of the method of the present application;

[0030] Figure 3 It is a schematic diagram of the structure of an embodiment of the fuselage of a model aircraft made by the method of the present application;

[0031] Figure 4 It is a schematic diagram of the structure of another embodiment of the body of a model aircraft made by the method of the present application;

[0032] Figure 5 It is a schematic diagram of the structure of an embodiment of the fuselage of a model aircraft made by the method of the present application, in which the parts that have formed the skin are combined with each other through pins;

[0033] Figure 6A to Figure 6D It is a schematic diagram of continuous actions for implementing the steps of the method of the present application, and exemplarily, the skeleton of the wing component is manufactured through multiple injection molding actions.

[0034] Explanation of symbols

[0035] Prior art

[0036] 10 fuselage 11 tail

[0037] 12 Wing 121 Edge

[0038] 122 Stringer 123 Rib

[0039] 13 Rudder

[0040] This application

[0041] 20 Body parts 201, 202, 203, 204 Components

[0042] 30 Wing parts 31 Main wing

[0043] 32 Aileron 33 Edge

[0044] 34 web 35 upper stringer

[0045] 36 Lower stringers 37 Wing ribs

[0046] 40 Tail Components 50 Rudder Components

[0047] 60 pin 61 snap

[0048] 70 Skin heat shrink film 71 Skin

[0049] B Model aircraft fuselage M1 The first injection molding mold

[0050] M2 Second injection molding mold M3 Third injection molding mold

[0051] M4 skin mold M41 upper mold

[0052] M42 lower mold M43 skin mold cavity

[0053] S1. Prepare bioplastics made from environmentally friendly materials;

[0054] S2. Using an injection molding device to form a bioplastic injection molded part;

[0055] S3. Prepare a skin mold, the skin mold comprises an upper mold, a lower mold, and a skin mold cavity;

[0056] S4. Cover the injection molded component with a skin heat shrink film, and then place the injection molded component and the skin heat shrink film into the skin mold cavity of the skin mold;

[0057] S5. Heating the skin mold to cause the skin heat shrink film to shrink and tightly cover the outside of the injection molded part to form a skin;

[0058] S6. Cut off the excess skin heat shrink film on the injection molded parts; and

[0059] S7. Assembling one or more skinned injection molded parts into a model aircraft fuselage. DETAILED DESCRIPTION

[0060] The positional relationships described in the following embodiments include: up, down, left and right. Unless otherwise specified, they are all based on the directions in which the components are drawn in the drawings.

[0061] The present application proposes a method for manufacturing a model aircraft body using environmentally friendly materials. The model aircraft body includes a plurality of injection-molded components, and the injection-molded components can be combined with each other to form the model aircraft body.

[0062] First see Figure 2 The following is a flow chart of an embodiment of the method of the present application. A preferred embodiment of the method of the present application for making a model aircraft body using environmentally friendly materials includes the following steps:

[0063] S1. Prepare bioplastics made from environmentally friendly materials;

[0064] S2. Using an injection molding device to form a biomass plastic into an injection molded component, the injection molded component is one of the multiple components used to form the body of the model aircraft;

[0065] S3. Prepare a skin mold, the skin mold M4 includes an upper mold M41, a lower mold M42, and a skin mold cavity M43 (see Fig.6D ), the skin mold cavity M43 is between the upper mold M41 and the lower mold M42, and the shape of the skin mold cavity M43 is determined by the shape of the predetermined skin of the injection molded part;

[0066] S4. Cover the injection molded component with a skin heat shrink film 70, and then place the injection molded component and the skin heat shrink film 70 into the skin mold cavity M43 of the skin mold M4;

[0067] S5. Heating the skin mold M4 causes the skin heat shrink film 70 to shrink and tightly cover the outer side of the injection molded part to form a skin 71;

[0068] S6. Cut off the excess skin heat shrink film 70 on the injection molded part; and

[0069] S7. Assemble one or more injection-molded parts that have formed the skin 71 into the body of the model aircraft.

[0070] As a preferred embodiment of the method of the present application, the bioplastic is made of biodegradable plastic or recyclable plastic mixed with natural materials, and the natural materials include: bamboo powder, sugar cane, potato, wheat, cassava, corn starch. As a preferred embodiment of the method of the present application, the bioplastic is a bamboo powder bioplastic made by mixing polylactic acid (PLA) resin and bamboo powder. The bamboo powder bioplastic is basically a material suitable for injection molding by uniformly mixing bamboo powder and resin and melting the bamboo powder and resin under high temperature and high pressure conditions. Adding bamboo powder to the resin can improve the overall strength of the material and can improve the structural strength of the body of the model aircraft.

[0071] A preferred embodiment of the environmentally friendly material used in the present application method can use, for example but not limited to, biomass plastic containing bamboo powder, and then use the injection molding process to make the body of the model aircraft; please refer to Figure 3 1 is a schematic diagram of the structure of an embodiment of a fuselage of a model aircraft made using the method of the present application. In one embodiment, the fuselage B of the model aircraft is first divided into a plurality of different parts, such as a fuselage part 20, a wing part 30 (which can be further divided into a main wing 31, an aileron 32), a tail wing part 40, and a rudder part 50.

[0072] In one embodiment of the method of the present application, a part of the body of the model aircraft is manufactured by a single injection molding operation. In other words, the part of the body of the model aircraft is a single component formed in one piece. In another embodiment of the method of the present application, a part of the body of the model aircraft is completed by a plurality of components that can be combined with each other through, for example, plugs or latches. Figure 4 This is an embodiment. For example, when the fuselage component 20 in the fuselage of a model aircraft is relatively large, the fuselage component 20 is usually divided into a plurality of components 201, 202, 203, 204. These plurality of components 201, 202, 203, 204 are respectively manufactured by injection molding, and then combined with each other by means of, for example, plugs 60 or latches to complete the fuselage component 20.

[0073] In one embodiment of the method of the present application, more than one skinned component can also be combined with each other to form a complete model aircraft body by means of, for example, a plug 60 or a snap 61, for example, a wing component 30 and a fuselage component 20 are combined together (see Figure 5 ).

[0074] In another embodiment of the method of the present application, a certain part of the body of the model aircraft is manufactured through multiple injection molding operations. For some parts with more complex structures, they are manufactured through multiple injection molding operations performed in sequence. In other words, the multiple injection molding molds used in the multiple injection molding operations performed in sequence can be regarded as a continuous mold. Please refer to Figure 6A to Figure 6D An embodiment of the present invention is exemplified in which a wing component 30 is manufactured by multiple injection molding operations.

[0075] like Figure 6A to Figure 6DThe present invention is an embodiment of the present invention: the components constituting the skeleton of the wing component 30 can be roughly divided into longitudinal components (including edge strips 33, webs 34, upper beams 35, and lower beams 36), transverse components (including ribs 37), and skin 71; in a preferred embodiment of manufacturing the skeleton of the wing component 30 by injection molding, the first injection molding mold M1 in a plurality of injection molding actions performed in sequence is used to mold the ribs 37 and edge strips 33 of the transverse components, and then the ribs 37 and edge strips 33 are taken out from the first injection molding mold M1 and moved to the second injection molding mold M2, and the second injection molding mold M2 is used to mold the longitudinal components (such as the webs 34 and the lower beams 36 located at the lower part of the wing component 30), and the longitudinal components are combined with the transverse components at the same time as they are injection molded in the second injection molding mold M2. Together, the transverse member and the longitudinal member are taken out from the second injection molding die M2 and moved to the third injection molding die M3. The third injection molding die M3 is used to mold the uppermost member in the skeleton of the wing 30, such as the upper girder 35 located on the upper part of the wing component 30. Similarly, the upper girder 35 is combined with other members, such as the ribs 37 of the transverse member, the longitudinal member, the upper girder 35 and the lower girder 36 while being injection-molded in the third injection molding die M3; after the above-mentioned multiple injection molding actions performed in sequence are completed, the skeleton of the wing component 30 can be completed; after the skeleton of the wing component 30 is completed, the skin mold M4 is used to complete the bonding and cutting of the skin 71 on the outside of the skeleton of the wing component 30, and the wing 30 component can be completed.

[0076] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present application, and are not intended to limit the implementation methods of the technology of the present application in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present application, but they should still be regarded as technologies or embodiments that are essentially the same as the present application.

Claims

1. A method for making a model aircraft body using environmentally friendly materials, wherein the model aircraft body comprises a plurality of injection-molded parts, and the injection-molded parts can be combined with each other to form the model aircraft body, characterized in that: The method comprises the following steps: Prepare bio-based plastics made from environmentally friendly materials; Using an injection molding device to form an injection-molded component from the bioplastic, the injection-molded component being one of a plurality of components for constituting a body of the model aircraft; Prepare a skin mold, the skin mold comprising an upper mold, a lower mold, and a skin mold cavity, the skin mold cavity is between the upper mold and the lower mold, and the shape of the skin mold cavity is determined by the shape of the predetermined skin of the injection molded part; Covering the injection molded component with a skin heat shrink film, and then placing the injection molded component and the skin heat shrink film into the skin mold cavity of the skin mold; Heating the skin mold to cause the skin heat shrink film to shrink and tightly cover the outer side of the injection molded part to form a skin; Cutting off the excess heat shrink film on the injection molded component; and One or more of the injection-molded parts with formed skins are combined into the fuselage of the model aircraft.

2. The method for making a model aircraft body using environmentally friendly materials according to claim 1, characterized in that: The bioplastic is made of biodegradable plastic or recyclable plastic mixed with natural materials, and the natural materials include: bamboo powder, sugar cane, potato, wheat, cassava, and corn starch.

3. The method for making a model aircraft body using environmentally friendly materials according to claim 1, characterized in that: The bioplastic is made from a mixture of polylactic acid resin and bamboo powder.

4. The method for making a model aircraft body using environmentally friendly materials according to claim 1, characterized in that: The step of heating the skin mold is to inject hot air into the skin mold cavity, and the skin mold cavity is reserved with an outlet for exhausting the hot air. The heat of the hot air is used to cause the skin heat shrink film to shrink and tightly cover the outer side of the injection molded part to form the skin.

5. The method for making a model aircraft body using environmentally friendly materials according to claim 1, characterized in that: The step of cutting off the excess skin heat shrink film on the injection molded component includes using ultrasonic welding to fuse and adhere the skin heat shrink film to the outer side of the injection molded component, and configuring a cutter on the upper mold and the lower mold. While the upper mold and the lower mold use ultrasonic waves to fuse and adhere the skin heat shrink film to the outer side of the injection molded component, the cutter is used to cut and remove the excess skin by thermal cutting.

6. The method for making a model aircraft body using environmentally friendly materials according to claim 1, characterized in that: Also includes: The injection molded part is manufactured through a single injection molding operation.

7. The method for making a model aircraft body using environmentally friendly materials according to claim 1, characterized in that: The invention further comprises: the injection molding component is manufactured by a plurality of injection molding actions which are performed in sequence and continuously, and the plurality of injection molding molds used in the plurality of injection molding actions which are performed in sequence and continuously are a continuous mold.

8. A model aircraft body manufactured by the method of claim 1, characterized in that: The fuselage of the model aircraft includes a plurality of injection molding parts, and the injection molding parts can be combined with each other to form the fuselage of the model aircraft.

9. The body of the model aircraft according to claim 8, characterized in that: The injection molded part is a single component that is molded in one piece.

10. The body of the model aircraft according to claim 8, characterized in that: The injection molding component is completed by a plurality of components that can be combined with each other through plug pins or snaps.

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