Mucus bionic fish skin and preparation method thereof

Abstract

The invention provides mucus bionic fish skin and a making method thereof, and belongs to the technical field of bionics. The problems that in the prior art, circulation and discharge of mucus cannot be better achieved, and due to the fact that bionic fish skin is asymmetric in the left-right direction, manufacturing of the bionic fish skin is complex and troublesome in the prior art are solved. The device comprises an outer contour and a mucus supply structure, the outer contour comprises an upper surface fish skin and a lower surface fish skin, the edges of the upper surface fish skin and the lower surface fish skin are fixedly connected and define a containing cavity, the mucus supply structure is located in the containing cavity, the lower surface fish skin is provided with a conveying pipeline, the inlet end of the conveying pipeline is connected with the mucus supply structure, and the outlet end of the conveying pipeline is connected with the mucus supply structure. The outlet end is communicated with the outside. The tail end pipeline is in direct contact with the external water environment, it is guaranteed that mucus flowing in from the main pipeline seeps out at a proper speed, the fish skin can be manufactured in a personalized mode, and the manufacturing mode is simple and efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of bionics, and in particular relates to a mucus bionic fish skin and a manufacturing method thereof. Background Art

[0002] In the field of bionic fish skin, as far as the existing technology is concerned, there are many studies on bionic fish skin. Many scientific research institutions have developed various types of bionic fish skin and their manufacturing processes, and have achieved major breakthroughs in appearance, physical properties, and especially drag reduction. However, there are currently few experiments based on bionic fish models to study viscoelastic fluids. Realizing the release and storage functions of viscoelastic fluids can make artificial bionic fish close to real fish, creating a good equipment foundation for subsequent diving operations. In the existing technology, there is no better way to realize the circulation and discharge of mucus, and because the bionic fish skin is asymmetrical on the left and right, the production of bionic fish skin in the existing technology is complicated and troublesome. Summary of the invention

[0003] In view of this, in order to solve the problem that there is no better way to realize the circulation and discharge of mucus in the prior art, and the bionic fish skin is complicated and troublesome to make in the prior art due to the left-right asymmetry of the bionic fish skin, the present invention proposes a mucus bionic fish skin and a method for making the same.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A mucus bionic fish skin comprises an outer contour and a mucus supply structure. The outer contour comprises an upper surface fish skin and a lower surface fish skin. The upper surface fish skin and the lower surface fish skin are fixedly connected at their edges and surrounded by a receiving cavity. The mucus supply structure is located in the receiving cavity. The lower surface fish skin is provided with a transport pipeline. The inlet end of the transport pipeline is connected to the mucus supply structure, and the outlet end is communicated with the outside.

[0006] As a preferred solution of the above mucus bionic fish skin, the mucus supply structure includes a mucus storage box and a water pump, the input end of the water pump is connected to the mucus storage box, and the output end of the water pump is connected to the transport pipeline.

[0007] As a preferred solution of the above-mentioned mucus bionic fish skin, the transport pipeline includes a main pipeline, multiple branch pipelines and multiple terminal pipelines, the multiple branch pipelines are arranged at intervals and are all connected to the main pipeline, each branch pipeline is connected to multiple terminal pipelines, the diameter of the terminal pipeline is smaller than the diameter of the branch pipeline, and the terminal pipeline is connected to the outside.

[0008] As a preferred solution of the above mucus bionic fish skin, the upper surface fish skin and the lower surface fish skin are both made of polydimethylsiloxane material.

[0009] As a preferred solution of the above mucus bionic fish skin, the upper surface of the fish skin is a smooth curved surface.

[0010] As a preferred solution of the above-mentioned mucus bionic fish skin, the upper surface fish skin is divided into a left upper epidermis and a right upper epidermis, and the left upper epidermis and the right upper epidermis are asymmetrical; the lower surface fish skin is divided into a left lower epidermis and a right lower epidermis, and the left lower epidermis and the right lower epidermis are asymmetrical.

[0011] The present invention also provides a method for preparing mucus bionic fish skin, which is used to prepare the mucus bionic fish skin, and the specific steps include:

[0012] Using 3D printing technology, a left upper surface fish skin mold, a right upper surface fish skin mold, a left lower surface fish skin mold, and a right lower surface fish skin mold are manufactured; the left lower surface fish skin mold and the right lower surface fish skin mold are both provided with a pipeline forming groove;

[0013] The left upper surface fish skin mold is poured, shaped and cured to obtain the left upper epidermis; the right upper surface fish skin mold is poured, shaped and cured to obtain the right upper epidermis; the left lower surface fish skin mold is poured, shaped and cured to obtain the left lower epidermis; the right lower surface fish skin mold is poured, shaped and cured to obtain the right lower epidermis;

[0014] The upper epidermis of the left part and the upper epidermis of the right part are bonded to obtain the upper surface fish skin; the lower epidermis of the left part and the lower epidermis of the right part are bonded to obtain the lower surface fish skin;

[0015] Punch the terminal duct through the fish skin on the lower surface;

[0016] The upper surface fish skin and the lower surface fish skin are bonded to obtain the outer contour of the mucus bionic fish skin.

[0017] As a preferred solution of the above-mentioned method for making the mucus bionic fish skin, the fish skin mold on the upper surface of the left part includes two first extraction surfaces, the two first extraction surfaces are spaced apart by a first set distance at the midline along the length direction, and the edges on the left side of the midline of the two first extraction surfaces are caulked and fixed; the fish skin mold on the lower left surface includes a second extraction surface and a third extraction surface, the second extraction surface has the same structure as the first extraction surface, the second extraction surface and the third extraction surface are spaced apart by a second set distance at the midline along the length direction, the edges on the left side of the midline are caulked and fixed, and the third extraction surface is provided with a pipeline forming groove.

[0018] As a preferred solution of the above-mentioned method for making the mucus bionic fish skin, the pipeline forming groove includes a main pipeline forming groove and a plurality of branch pipeline forming grooves, and the plurality of branch pipeline forming grooves are all connected to the main pipeline forming groove.

[0019] As a preferred solution of the above-mentioned method for making the mucus bionic fish skin, the cross-section of the channel forming groove is trapezoidal.

[0020] Compared with the prior art, the mucus bionic fish skin and the preparation method thereof provided by the present invention have the following beneficial effects:

[0021] 1. The present invention provides a mucus bionic fish skin. The design of the mucus bionic fish skin includes the exudation space and exudation mode of the mucus in the fish skin. The inspiration comes from the blood circulation system in the human body. The overall mucus penetration model is designed with the main road as the main part and the peripheral divergent small pipes as the auxiliary part. Through the two holes on both sides of the fish's head, the internal pipe is connected to the mucus transport pipe of the whole fish skin, so that the left and right sides are separated for transportation and penetration, and the main pipe finally returns to the tail of the bionic fish. In addition to the main road circulation, the end of the branch pipe next to it is designed as an open design, and a porous end pipe with a smaller diameter is opened in the branch pipe. The end pipe directly contacts the space of the external water environment to ensure that the mucus flowing in from the main pipe is exuded at an appropriate speed.

[0022] 2. The present invention provides a mucus bionic fish skin and a method for making the same. The method for making the mucus bionic fish skin is that the upper surface fish skin and the lower surface fish skin are divided into a left part and a right part from the midline along the length direction, and the left part and the right part of the upper surface fish skin and the lower surface fish skin are asymmetrical. Therefore, when making the fish skin, the upper surface fish skin and the lower surface fish skin are divided into left and right parts, respectively, and then bonded. The method is mainly to print the mold by 3D, pour the mold, splice, open the terminal pipe, and finally bond to form a set of personalized customized fish skin, and the method is simple and efficient.

[0023] 3. The main reference directions of the source of the present invention are: First, the blood circulation of the human body, with the heart as the power core, supplies blood to the whole body and realizes the circulation of blood at the same time. However, in organs such as the kidney, potential energy is generated due to the concentration difference of the solution, which pushes certain substances in the blood to cross the capillary membrane to reach the area outside the blood vessel, realizes the exchange of substances, and through the supplement of the thick mucus stored in the bionic fish body, the concentration in the circulating liquid rises and the circulation is realized. Second, based on the principle of 3D printing, combined with the existing model, a set of 3D printing technology is designed to make a flexible bionic fish skin with micro holes. Combining the above two ideas, we propose to add capillary channels with capillary distribution in the fish skin, add a water pump in the bionic fish body to realize the supply of mucus, and when transporting inside the fish skin, the concentrated solution in the channel freely diffuses outside the bionic fish body, and the whole body circulatory system is used to make the surface of the bionic fish continuously wrapped in mucus. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a structural schematic diagram of a fish skin mold on the upper surface of the left part in the method for making mucus bionic fish skin provided by a specific embodiment of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the fish skin mold on the upper surface of the right part in the method for making the mucus bionic fish skin provided by a specific embodiment of the present invention;

[0027] Figure 3 It is a structural schematic diagram of a fish skin mold on the lower surface of the left part in the method for making mucus bionic fish skin provided by a specific embodiment of the present invention;

[0028] Figure 4 It is a structural schematic diagram of a fish skin mold on the lower surface of the right part in the method for making mucus bionic fish skin provided by a specific embodiment of the present invention.

[0029] In the figure:

[0030] 1. First extraction surface; 2. Fourth extraction surface; 3. Third extraction surface; 4. Sixth extraction surface; 5. Pipeline forming groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] The main reference directions of the source of the present invention are: First, the blood circulation of the human body, with the heart as the power core, supplies blood to the whole body and realizes the circulation of blood at the same time. However, in organs such as the kidney, potential energy is generated due to the concentration difference of the solution, which pushes certain substances in the blood to cross the capillary membrane to reach the area outside the blood vessel, realizes the exchange of substances, and through the supplement of the concentrated mucus stored in the bionic fish body, the concentration in the circulating liquid rises, and the circulation is realized. Second, based on the principle of 3D printing, combined with the existing model, a set of 3D printing technology is designed to make a flexible bionic fish skin with micro holes. Combining the above two ideas, we propose to add capillary channels with capillary distribution in the fish skin, add a water pump in the bionic fish body to realize the supply of mucus, and when transporting inside the fish skin, the concentrated solution in the channel freely diffuses outside the bionic fish body, and the whole body circulatory system is used to make the surface of the bionic fish continuously wrapped in mucus.

[0036] See also Figure 1-4 To describe this embodiment, the present invention provides a mucus bionic fish skin and a method for making the same, wherein the mucus bionic fish skin comprises an outer contour and a mucus supply structure, wherein the outer contour comprises an upper surface fish skin and a lower surface fish skin, wherein the upper surface fish skin and the lower surface fish skin are fixedly connected at their edges and are surrounded by a accommodating cavity, wherein the mucus supply structure is located in the accommodating cavity, and wherein a transport pipeline is provided on the lower surface fish skin, wherein an inlet end of the transport pipeline is connected to the mucus supply structure, and an outlet end thereof is communicated with the outside.

[0037] Optionally, the transport pipeline includes a main pipeline, multiple branch pipelines and multiple terminal pipelines, the multiple branch pipelines are arranged at intervals and are all connected to the main pipeline, each branch pipeline is connected to multiple terminal pipelines, the diameter of the terminal pipeline is smaller than the diameter of the branch pipeline, and the terminal pipeline is connected to the outside.

[0038] It can be understood that the terminal pipe is a micro hole, that is, a capillary channel that can simulate capillaries. The mucus passes through the main pipe, the branch pipe and the terminal pipe in sequence. The terminal pipe can connect the mucus with the outside world to ensure that the mucus flowing in from the main pipe seeps out at an appropriate speed. The outside world is the water environment outside the mechanical fish.

[0039] Optionally, the mucus supply structure includes a mucus storage tank and a water pump, wherein an input end of the water pump is connected to the mucus storage tank, and an output end of the water pump is connected to a transport pipeline.

[0040] Optionally, the upper surface fish skin and the lower surface fish skin are both made of polydimethylsiloxane material. Polydimethylsiloxane (PDMS), also known as dimethyl silicone oil, is a kind of silicone rubber, odorless, highly transparent, heat-resistant, cold-resistant, waterproof, low surface tension, thermally conductive, and has a light transmittance of 100%, and has excellent physical properties. PDMS is a viscous liquid when it is not solidified. When a curing agent is added, it gradually solidifies as the temperature rises. Most underwater bionic materials use PDMS as the main material, mainly to utilize its excellent physical properties.

[0041] Optionally, the upper surface of the fish skin is a smooth curved surface.

[0042] Optionally, the upper surface fish skin is divided into a left upper epidermis and a right upper epidermis, and the left upper epidermis and the right upper epidermis are asymmetrical; the lower surface fish skin is divided into a left lower epidermis and a right lower epidermis, and the left lower epidermis and the right lower epidermis are asymmetrical.

[0043] The present invention also provides a method for preparing mucus bionic fish skin, which is used to prepare the mucus bionic fish skin, and the specific steps include:

[0044] S1: Using 3D printing technology, a left upper surface fish skin mold, a right upper surface fish skin mold, a left lower surface fish skin mold, and a right lower surface fish skin mold are made; the left lower surface fish skin mold and the right lower surface fish skin mold are both provided with a pipeline forming groove 5.

[0045] The upper surface fish skin and the lower surface fish skin are divided into a left part and a right part along the center line along the length direction. The left part and the right part of the upper surface fish skin and the lower surface fish skin are asymmetrical. Therefore, during production, the upper surface fish skin and the lower surface fish skin are divided into left and right parts and are produced separately and then glued together.

[0046] The fish skin mold on the upper surface of the left part is only cast on its left part; the fish skin mold on the upper surface of the right part is only cast on its right part; the fish skin mold on the lower surface of the left part is only cast on its left part; and the fish skin mold on the lower surface of the right part is only cast on its right part.

[0047] Optionally, the pipeline forming groove 5 includes a main pipeline forming groove 5 and a plurality of branch pipeline forming grooves 5 , and the plurality of branch pipeline forming grooves 5 are all connected to the main pipeline forming groove 5 .

[0048] Optionally, the cross section of the pipeline forming groove 5 is trapezoidal.

[0049] The pipe forming groove 5 is used to form a main pipe and a branch pipe.

[0050] S2: pouring, shaping and curing the fish skin mold on the upper surface of the left part to obtain the upper epidermis of the left part; pouring, shaping and curing the fish skin mold on the upper surface of the right part to obtain the upper epidermis of the right part; pouring, shaping and curing the fish skin mold on the lower surface of the left part to obtain the lower epidermis of the left part; pouring, shaping and curing the fish skin mold on the lower surface of the right part to obtain the lower epidermis of the right part.

[0051] like Figure 1-4 As shown, optionally, the fish skin mold on the upper surface of the left part includes two first extraction surfaces 1, the two first extraction surfaces 1 are spaced a first set distance apart at the midline along the length direction, and the edges of the two first extraction surfaces 1 located on the left side of the midline are caulked and fixed; the fish skin mold on the lower left surface includes a second extraction surface and a third extraction surface 3, the second extraction surface has the same structure as the first extraction surface 1, the second extraction surface and the third extraction surface 3 are spaced a second set distance apart at the midline along the length direction, the edges located on the left side of the midline are caulked and fixed, and the third extraction surface 3 is provided with a pipeline forming groove 5.

[0052] Similarly, the fish skin mold on the upper surface of the right part includes two fourth extraction surfaces 2, the two fourth extraction surfaces 2 are spaced apart by a first set distance at the midline along the length direction, and the edges of the two fourth extraction surfaces 2 located on the left side of the midline are caulked and fixed; the fish skin mold on the lower right surface includes a fifth extraction surface and a sixth extraction surface 4, the fifth extraction surface has the same structure as the fourth extraction surface 2, the fifth extraction surface and the sixth extraction surface 4 are spaced apart by a second set distance at the midline along the length direction, the edges located on the left side of the midline are caulked and fixed, and the sixth extraction surface 4 is provided with a pipeline forming groove 5.

[0053] The upper surface fish skin is a smooth curved surface, which is clamped by two first extraction surfaces 1, and the gap in the middle position of the first extraction surface 1 is 3mm, and then the other three sides located at one side of the middle position are caulked, and the width of each first extraction surface 1 is 2mm, and then uncured silicone rubber is poured between the two first extraction surfaces 1 to shape and solidify. The above is the preparation method of the left part of the upper surface fish skin, and the preparation of the lower surface fish skin has more production of transport pipelines relative to the upper surface fish skin, and the transport pipeline is "depicted" in the 3rd extraction surface 3 to form a groove 5, and the groove type is a trapezoid, and the depth is 3mm, and the lower surface fish skin is obtained by clamping the second extraction surface and the third extraction surface 3 identical with the first extraction surface 1, and the middle position of the second extraction surface and the third extraction surface 3 is 5mm apart, and the other three sides on the left side of the middle position are caulked equally, and then the uncured silicone rubber is poured into the model to shape, and the left part of the lower surface fish skin is prepared.

[0054] S3: Bond the upper epidermis of the left part and the upper epidermis of the right part to obtain the upper surface fish skin; bond the lower epidermis of the left part and the lower epidermis of the right part to obtain the lower surface fish skin. Use strong glue for bonding, the strong glue should be waterproof, and ensure that the fish skin is well sealed.

[0055] S4: Open the terminal channel on the lower surface fish skin.

[0056] The design of the fish skin includes the space and method for the mucus to seep out of the fish skin. Inspired by the blood circulation system in the human body, an overall mucus penetration model is designed with the main trunk as the main part and the peripheral small pipes as the auxiliary part. Through the two holes on both sides of the fish's head, the internal pipes are connected to the mucus transport pipes of the whole fish skin, so that the left and right sides can be transported and infiltrated separately, and the main pipe finally returns to the bionic fish tail. In addition to the main road circulation, the end of the branch pipe is designed to be open, and a porous end pipe with a smaller diameter is opened in the branch pipe. The end pipe directly contacts the external water environment to ensure that the mucus flowing in from the main pipe seeps out at an appropriate speed.

[0057] S5: Bonding the upper surface fish skin and the lower surface fish skin to obtain the outer contour of the mucus bionic fish skin.

[0058] Obviously, the embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. It is not necessary and impossible to exhaustively list all the embodiments here.

Claims

1. A mucus bionic fish skin, characterized in that: It includes an outer contour and a mucus supply structure. The outer contour includes an upper surface fish skin and a lower surface fish skin. The edges of the upper surface fish skin and the lower surface fish skin are fixedly connected and surrounded by a accommodating cavity. The mucus supply structure is located in the accommodating cavity. The lower surface fish skin is provided with a transport pipeline. The inlet end of the transport pipeline is connected to the mucus supply structure, and the outlet end is connected to the outside.

2. The mucus bionic fish skin according to claim 1, characterized in that: The mucus supply structure includes a mucus storage box and a water pump, wherein the input end of the water pump is connected to the mucus storage box, and the output end of the water pump is connected to the transport pipeline.

3. The mucus bionic fish skin according to claim 1, characterized in that: The transport pipeline includes a main pipeline, multiple branch pipelines and multiple terminal pipelines. The multiple branch pipelines are arranged at intervals and are all connected to the main pipeline. Each branch pipeline is connected to multiple terminal pipelines. The diameter of the terminal pipeline is smaller than the diameter of the branch pipeline, and the terminal pipeline is connected to the outside.

4. The mucus bionic fish skin according to claim 1, characterized in that: The upper surface fish skin and the lower surface fish skin are both made of polydimethylsiloxane material.

5. The mucus bionic fish skin according to claim 1, characterized in that: The upper surface of the fish skin is a smooth curved surface.

6. The mucus bionic fish skin according to claim 1, characterized in that: The upper surface fish skin is divided into a left upper epidermis and a right upper epidermis, and the left upper epidermis and the right upper epidermis are asymmetrical; the lower surface fish skin is divided into a left lower epidermis and a right lower epidermis, and the left lower epidermis and the right lower epidermis are asymmetrical.

7. A method for making mucus bionic fish skin, characterized in that: For making the mucus bionic fish skin according to any one of claims 1 to 6, the specific steps include: Using 3D printing technology, a left upper surface fish skin mold, a right upper surface fish skin mold, a left lower surface fish skin mold, and a right lower surface fish skin mold are manufactured; the left lower surface fish skin mold and the right lower surface fish skin mold are both provided with a pipeline forming groove (5); The left upper surface fish skin mold is poured, shaped and cured to obtain the left upper epidermis; the right upper surface fish skin mold is poured, shaped and cured to obtain the right upper epidermis; the left lower surface fish skin mold is poured, shaped and cured to obtain the left lower epidermis; the right lower surface fish skin mold is poured, shaped and cured to obtain the right lower epidermis; The upper epidermis of the left part and the upper epidermis of the right part are bonded to obtain the upper surface fish skin; the lower epidermis of the left part and the lower epidermis of the right part are bonded to obtain the lower surface fish skin; Punch the terminal duct through the fish skin on the lower surface; The upper surface fish skin and the lower surface fish skin are bonded to obtain the outer contour of the mucus bionic fish skin.

8. The method for making the mucus bionic fish skin according to claim 7, characterized in that: The fish skin mold on the upper surface of the left part comprises two first extraction surfaces (1), the two first extraction surfaces (1) are spaced apart by a first set distance at the midline along the length direction, and the edges on the left side of the midline of the two first extraction surfaces (1) are caulked and fixed; the fish skin mold on the lower left surface comprises a second extraction surface and a third extraction surface (3), the second extraction surface has the same structure as the first extraction surface (1), the second extraction surface and the third extraction surface (3) are spaced apart by a second set distance at the midline along the length direction, the edges on the left side of the midline are caulked and fixed, and the third extraction surface (3) is provided with a pipeline forming groove (5).

9. The method for making the mucus bionic fish skin according to claim 7, characterized in that: The pipeline forming groove (5) comprises a main pipeline forming groove (5) and a plurality of branch pipeline forming grooves (5), and the plurality of branch pipeline forming grooves (5) are all connected to the main pipeline forming groove (5).

10. The method for making the mucus bionic fish skin according to claim 7, characterized in that: The cross section of the pipe forming groove (5) is trapezoidal.

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