Packaging device

Abstract

The utility model discloses packaging devices which are used for packaging a composite pipeline, the composite pipeline is of a hollow columnar structure, the two packaging devices are arranged and fixed to the two ends of the composite pipeline in a sleeving mode correspondingly, each packaging device comprises a supporting body, a plurality of inner supporting frames and a plurality of outer supporting frames, and the supporting body is a disc piece; the multiple inner supporting frames and the multiple outer supporting frames are arranged on the outer side of the supporting body at intervals in the circumferential direction, the inner supporting frames abut against the inner wall of the composite pipeline, and the outer supporting frames abut against the periphery of the composite pipeline, so that the packaging device is clamped on the composite pipeline. According to the packaging device for the composite pipeline, the composite pipeline in transportation can be effectively protected, and meanwhile the packaging device is simple in structure, low in cost, light in weight, capable of being repeatedly used and beneficial to environmental protection.

Description

Technical Field

[0001] The present application relates to the technical field of composite pipes, and more specifically to a packaging device for composite pipes. Background Art

[0002] During transportation, composite pipes will inevitably be subjected to impact loads from various directions and of different sizes, which will cause unpredictable performance changes in composite pipes. In order to reduce the damage caused by impact and collision to composite pipes during the entire circulation process, ensure their structural integrity, and reduce the economic losses caused by them, impact protection for composite pipes during the entire circulation process is designed. However, most of the impact protection designs in the existing technology are based on the characteristics of the material itself. There is currently no research specifically aimed at adding additional structures for impact protection, and there is also a lack of research on impact protection for composite pipes. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a packaging device for a composite pipe, which can effectively protect the composite pipe during transportation. At the same time, the packaging device has a simple structure, low cost, lightweight and can be reused, which is beneficial to environmental protection.

[0004] To achieve the above-mentioned purpose, the technical means adopted in this application are as follows: a packaging device is provided for packaging a composite pipe, the composite pipe is a hollow cylindrical structure, two packaging devices are provided, and the two packaging devices are respectively mounted and fixed on the two ends of the composite pipe, the packaging device includes a supporting body, a plurality of inner supporting frames and a plurality of outer supporting frames, the supporting body is a disc part, a plurality of inner supporting frames and a plurality of outer supporting frames are arranged at intervals along the circumferential direction on the outside of the supporting body, the inner supporting frames abut against the inner wall of the composite pipe, and the outer supporting frames abut against the outer circumference of the composite pipe, so that the packaging device is clamped on the composite pipe.

[0005] Among them, the inner support frame includes a first connecting part and a first supporting part, the first connecting part is a strip plate, one end of several first connecting parts is fixed on the outer side of the supporting body along the circumferential direction, the first supporting part is fixedly connected to the other end of the first connecting part, and the first supporting part is arranged non-parallel to the first connecting part.

[0006] The first support portion is arranged toward the composite pipe, and the outer surface of the first support portion away from the first connection portion abuts against the inner wall of the composite pipe. The angle between the outer surface of the first support portion abutting against the composite pipe and the axis of the composite pipe is in the range of 2° to 4°.

[0007] Among them, the first connecting part includes two first connecting sections connected to each other, and the two first connecting sections make the first connecting part have a V-shaped structure. The V-shaped opening of the first connecting part is arranged toward the composite pipe, so that when the inner support frame is clamped in the composite pipe, the supporting body is placed in the inner cavity of the composite pipe.

[0008] Among them, the outer support frame includes a second connecting part and a second supporting part, the second connecting part is a strip-shaped plate, one end of several second connecting parts is fixed on the outer side of the supporting body along the circumferential direction, the second supporting part is fixedly connected to the other end of the second connecting part, the second supporting part is non-parallel to the second connecting part, and the second connecting part is spaced apart from the first connecting part.

[0009] The second support portion is arranged toward the composite pipe, and the inner surface of the second support portion close to the second connection portion abuts against the outer periphery of the composite pipe. The angle between the inner surface of the second support portion abutting against the composite pipe and the axis of the composite pipe is in the range of 4° to 6°.

[0010] Among them, in the radial direction of the composite pipe, the distance between the outer sides of the other ends of the two first support parts away from the first connection part is A2, the distance between the inner sides of the other ends of the two second support parts away from the second connection part is B2, the wall thickness of the composite pipe is H, B2-A2=2H.

[0011] Among them, the second connecting part includes two second connecting sections connected to each other, and the two second connecting sections make the second connecting part have a V-shaped structure. The V-shaped opening of the second connecting part is arranged toward the composite pipe, so that when the outer support frame is clamped in the composite pipe, the supporting body is placed in the inner cavity of the composite pipe.

[0012] Among them, four inner support frames and four outer support frames are respectively arranged, and the four inner support frames and the four outer support frames are arranged at intervals from each other and are evenly distributed on the outer periphery of the support body.

[0013] The packaging device is integrally formed through an additive manufacturing process.

[0014] Wherein, the packaging device is made of elastic non-metallic material.

[0015] Wherein, a through groove is arranged on at least one of the supporting body, the plurality of inner supporting frames and the plurality of outer supporting frames.

[0016] The beneficial effects of the present application are as follows: the packaging device of the present application is used to wrap and support the composite pipe in transportation, and the packaging device is arranged at both ends of the composite pipe, which can better resist the impact during transportation, thereby effectively protecting the composite pipe. At the same time, the structure of the packaging device is designed in imitation of the structure of "spider legs", including an inner support frame and an outer support frame arranged at intervals from each other, the inner support frame is used to support the inner wall of the composite pipe, and the outer support frame is used to fix the outer periphery of the composite pipe, which has a good protective effect on the impact that the composite pipe with an annular structure may be subjected to during circulation. The packaging device of the present application has a simple structure, and is designed to be more portable, low-cost, and lightweight. At the same time, compared with traditional packaging protection, the packaging device can be reused, which is beneficial to environmental protection and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the packaging device 10 installed on the composite pipe 20 of the present application;

[0018] Figure 2 It is a schematic structural diagram of the packaging device 10 of the present application;

[0019] Figure 3 It is a schematic plan view of the packaging device 10 of the present application in one view. DETAILED DESCRIPTION

[0020] Upon request, specific embodiments of the present application will be disclosed herein. However, it should be understood that the embodiments disclosed herein are merely typical examples of the present application, which may be embodied in various forms. Therefore, the specific details disclosed herein are not considered to be restrictive, but only as a basis for the claims and as a representative basis for teaching those skilled in the art to apply the present application in various ways in practice in any appropriate manner, including using the various features disclosed herein and combining features that may not be explicitly disclosed herein.

[0021] In a composite pipe used to store compressed air, according to actual application requirements, the composite pipe usually needs to be designed to be several thousand meters in length. Due to the limited technologies of composite pipe manufacturing and transportation, the composite pipe is generally spliced ​​together by several sections of composite pipe body to meet different transportation and storage requirements. The present application provides a packaging device for a composite pipe for the transportation of the composite pipe.

[0022] See also Figure 1 The present application provides a packaging device 10 for packaging a composite pipe 20. The composite pipe 20 is a hollow columnar structure. The packaging device 10 is provided in two pieces. The two packaging devices 10 are respectively mounted and fixed on both ends of the composite pipe 20 to wrap and support the composite pipe 20 to prevent the composite pipe 20 from being bumped during transportation. The packaging device 10 includes a supporting body 11, a plurality of inner supporting frames 12 and a plurality of outer supporting frames 13. The supporting body 11 is a disc. The plurality of inner supporting frames 12 and a plurality of outer supporting frames 13 are circumferentially spaced apart on the outside of the supporting body 11. When the packaging device 10 is sleeved on the end of the composite pipe 20, the circular disc surface of the supporting body 11 is perpendicular to the axis of the composite pipe 20, the inner supporting frame 12 abuts against the inner wall of the composite pipe 20, and the outer supporting frame 13 abuts against the outer periphery of the composite pipe 20, so that the packaging device 10 is clamped at the end of the composite pipe 20. At the same time, the axis of the supporting body 11 and the axis of the composite pipe 20 are located on the same straight line, ensuring that after the packaging device 10 is installed on the composite pipe 20, the center of gravity of the composite pipe 20 remains unchanged.

[0023] Combination Figure 2As shown, the inner support frame 12 includes a first connection portion 121 and a first support portion 122. The first connection portion 121 is a strip plate. One end of a plurality of first connection portions 121 is fixed to the outside of the support body 11 along the circumferential direction. The first support portion 122 is fixedly connected to the other end of the first connection portion 121. The first support portion 122 is arranged non-parallel to the first connection portion 121, so that the plurality of inner support frames 12 are claw-shaped structures on the outside of the support body 11. The first support portion 122 is arranged toward the composite pipe 20. When the packaging device 10 is sleeved on the end of the composite pipe 20, the first support portion 122 is clamped on the inner wall of the composite pipe 20, and the outer surface of the first support portion 122 away from the first connection portion 121 abuts against the inner wall of the composite pipe 20. The first support portion 122 is a wedge-shaped block.

[0024] In one embodiment, the outer surface of the first support portion 122 abutting against the composite pipe 20 is inclined toward the direction close to the composite pipe 20, that is, the outer surface of the first support portion 122 abutting against the composite pipe 20 is inclined toward the direction deviating from the axis of the support body 11, and the angle between the outer surface of the first support portion 122 abutting against the composite pipe 20 and the axis of the composite pipe 20 is in the range of 2° to 4°, so that the packaging device 10 can more effectively resist impact. In another embodiment, the surface of the first support portion abutting against the composite pipe is parallel to the axis of the composite pipe, and the first support portion completely abuts against the inner wall of the composite pipe, as long as the composite pipe can be stably clamped; of course, the angle between the outer surface of the first support portion abutting against the composite pipe and the axis of the composite pipe can also be in other ranges, which is not limited here.

[0025] The first connection portion 121 includes two first connection segments 1211 that are interconnected. The two first connection segments 1211 make the first connection portion 121 have a V-shaped structure. The V-shaped opening of the first connection portion 121 is arranged toward the first support portion 122, that is, the V-shaped opening of the first connection portion 121 faces the composite pipe 20, so that when the inner support frame 12 is clamped in the composite pipe 20, the support body 11 is placed in the inner cavity of the composite pipe 20, avoiding the possibility of collision when the support body 11 protrudes out of the composite pipe 20.

[0026] Combination Figure 2 and Figure 3As shown, a plurality of first connection parts 121 are evenly distributed in the outer circumference of the support body 11, and the outer surfaces of the plurality of first connection sections 1211 close to the support body 11 and away from the composite pipe 20 are all located on the same conical surface, and the outer surfaces of the plurality of first connection sections 1211 away from the support body 11 and away from the composite pipe 20 are all located on the same plane, so that the overall structure of the packaging device 10 is symmetrical and the appearance is beautiful. Among them, the plane where the outer surfaces of the plurality of first connection sections 1211 away from the support body 11 and away from the composite pipe 20 are located is parallel to the circular disk surface of the support body 11, that is, the plurality of first connection sections 1211 away from the support body 11 are all arranged along the radial direction of the support body 11. At the same time, the angle between the conical surface where the outer surfaces of the plurality of first connection sections 1211 close to the support body 11 and away from the composite pipe 20 and the plane where the outer surfaces of the plurality of first connection sections 1211 away from the support body 11 and away from the composite pipe 20 are located is in the range of 110° to 120°, that is, the V-shaped opening angle of the first connection part 121 is in the range of 110° to 120°. In other embodiments, the outer surfaces of the plurality of first connection sections away from the support body and away from the composite pipe may also all be located on another conical surface.

[0027] Continue reading Figure 2 The structure of the outer support frame 13 is similar to that of the inner support frame 12. Specifically, the outer support frame 13 includes a second connection portion 131 and a second support portion 132. The second connection portion 131 is a strip plate. One end of a plurality of second connection portions 131 is fixed to the outer side of the support body 11 along the circumferential direction. The second support portion 132 is fixedly connected to the other end of the second connection portion 131. The second support portion 132 is arranged non-parallel to the second connection portion 131, so that the plurality of outer support frames 13 are claw-shaped structures on the outer side of the support body 11. The second support portion 132 is arranged toward the composite pipe 20, that is, the second support portion 132 is arranged in the same direction as the first support portion 122. When the packaging device 10 is sleeved on the end of the composite pipe 20, the second support portion 132 is clamped on the outer periphery of the composite pipe 20, and the inner surface of the second support portion 132 close to the second connection portion 131 abuts against the outer periphery of the composite pipe 20. Among them, the second support portion 132 is a wedge block, and the second connection portion 131 and the first connection portion 121 are arranged at intervals from each other.

[0028] In one embodiment, the inner surface of the second support portion 132 abutting against the composite pipe 20 is inclined toward the direction close to the composite pipe 20, that is, the inner surface of the second support portion 132 abutting against the composite pipe 20 is inclined toward the direction close to the axis of the support body 11, and the angle between the inner surface of the second support portion 132 abutting against the composite pipe 20 and the axis of the composite pipe 20 is in the range of 4° to 6°, so that the packaging device 10 can better play a fixing role. In another embodiment, the surface of the second support portion abutting against the composite pipe is parallel to the axis of the composite pipe, and the second support portion completely abuts against the outer periphery of the composite pipe, as long as the composite pipe can be stably clamped; of course, the angle between the inner surface of the second support portion abutting against the composite pipe and the axis of the composite pipe can also be in other ranges, which is not limited here.

[0029] The second connection portion 131 includes two second connection segments 1311 that are interconnected. The two second connection segments 1311 make the second connection portion 131 present a V-shaped structure. The V-shaped opening of the second connection portion 131 is arranged toward the second support portion 132, that is, the V-shaped opening of the first connection portion 131 faces the composite pipe 20, so that when the outer support frame 13 is clamped in the composite pipe 20, the support body 11 is placed in the inner cavity of the composite pipe 20, avoiding the possibility of collision when the support body 11 protrudes out of the composite pipe 20.

[0030] Continue to combine Figure 2 and Figure 3 As shown, the plurality of second connection parts 131 are uniformly distributed in the outer circumference of the support body 11, and the outer surfaces of the plurality of second connection sections 1311 close to the support body 11 and away from the composite pipe 20 are all located on the same conical surface, and the outer surfaces of the plurality of second connection sections 1311 away from the support body 11 and away from the composite pipe 20 are all located on the same plane, so that the overall structure of the packaging device 10 is symmetrical and the appearance is beautiful. Among them, the plane where the outer surfaces of the plurality of second connection sections 1311 away from the support body 11 and away from the composite pipe 20 are located is parallel to the circular disk surface of the support body 11, that is, the plurality of second connection sections 1311 away from the support body 11 are all arranged along the radial direction of the support body 11. At the same time, the angle between the conical surface where the outer surfaces of the plurality of second connection sections 1311 close to the support body 11 and away from the composite pipe 20 and the plane where the outer surfaces of the plurality of second connection sections 1311 away from the support body 11 and away from the composite pipe 20 are located is in the range of 110° to 120°, that is, the V-shaped opening angle of the second connection part 131 is in the range of 110° to 120°. In other embodiments, the outer surfaces of the plurality of second connection sections away from the supporting body and away from the composite pipe may also all be located on another conical surface.

[0031] At the same time, the conical surface on which the outer surfaces of the several second connecting sections 1311 close to the supporting body 11 are away from the composite pipe 20 is the same conical surface as the conical surface on which the outer surfaces of the several first connecting sections 1211 close to the supporting body 11 are away from the composite pipe 20, and the plane on which the outer surfaces of the several second connecting sections 1311 away from the supporting body 11 are away from the composite pipe 20 is the same plane as the plane on which the outer surfaces of the several first connecting sections 1211 away from the supporting body 11 are away from the composite pipe 20, which further makes the overall structure of the packaging device 10 symmetrical and beautiful in appearance, while ensuring that the center of gravity of the packaging device 10 is located at the axis center of the supporting body 11.

[0032] In this embodiment, four inner support frames 12 and four outer support frames 13 are respectively provided, and the four inner support frames 12 and the four outer support frames 13 are arranged at intervals from each other and are evenly distributed on the outer periphery of the support body 11, that is, the angle between two adjacent inner support frames 12 and the angle between two adjacent outer support frames 13 are both 90°, and the angle between adjacent inner support frames 12 and outer support frames 13 is 45°, so that the overall structure of the packaging device 10 is symmetrical and the appearance is beautiful, and at the same time, it can effectively resist the impact from all directions that the annular structure may be subjected to during the circulation process. In other embodiments, the inner support frames and the outer support frames can also be set to other numbers, as long as they can meet the tight connection between the packaging device and the composite pipe, and there is no limitation here.

[0033] Furthermore, the support body 11, the first connection portion 121 and the second connection portion 131 are all hollowed out, that is, through grooves are respectively provided on the first connection section 1211 and the second connection section 1311, and a through groove is also provided in the center of the disc of the support body 11, and the through groove in the center of the disc is a through hole, so that the overall weight of the packaging device 10 is lighter, the material is more economical, and the cost is lower. While ensuring the protective effect, the packaging device 10 of this structure is more lightweight and easier to use during transportation. In addition, the packaging device 10 is integrally formed by an elastic non-metallic material and an additive manufacturing process, that is, 3D printing technology, so that the packaging device 10 can be quickly formed, which improves the production efficiency of the packaging device 10 and reduces the production cost. Among them, the elastic non-metallic material can be nylon or the like.

[0034] Preferably, in order to ensure the structural stability and support effectiveness of the packaging device 10, through grooves are opened on several first connecting sections 1211 and several second connecting sections 1311 away from the supporting body 11, and no through grooves are opened on several first connecting sections 1211 and several second connecting sections 1311 close to the supporting body 11.

[0035] Furthermore, in other embodiments, a through slot is provided on any one of the supporting body 11, the plurality of inner supporting frames 12, and the plurality of outer supporting frames 13, which can also reduce the overall weight of the packaging device 10, save materials, and reduce costs.

[0036] Continue to combine Figure 1-Figure 3 As shown, since four inner support frames 12 and four outer support frames 13 are evenly arranged along the circumferential direction, the first connection section 1211 of the inner support frame 12 away from the support body 11 and the second connection section 1311 of the outer support frame 13 away from the support body 11 are arranged along the radial direction of the support body 11, so the relatively arranged inner support frames 12 are located in the same radial direction of the composite pipe 20, and the relatively arranged outer support frames 13 are located in the same radial direction of the composite pipe 20. Figure 3 It is a front view of the packaging device 10 along one of the radial directions of the outer support frame 13. On the two inner support frames 12 located in the same radial direction, the distance between the outer sides of the ends of the two first support portions 122 connected to the first connecting portion 121 is defined as A1, and the distance between the outer sides of the other ends of the two first support portions 122 away from the first connecting portion 121 is defined as A2. Since the outer surface of the first support portion 122 abutting against the composite pipe 20 (i.e., the outer side surface of the first support portion 122) is inclined 2° to 4° away from the axial direction of the support body 11, A1 is not equal to A2, and A1 is smaller than A2. On the two outer support frames 13 located in the same radial direction, the distance between the inner sides of the ends of the two second support portions 132 connected to the second connecting portion 131 is defined as B1, and the distance between the inner sides of the other ends of the two second support portions 132 away from the second connecting portion 131 is defined as B2. Since the inner surface of the second support portion 132 abutting against the composite pipe 20 (i.e., the inner side surface of the second support portion 132) is inclined 4° to 6° toward the axial direction close to the support body 11, B1 and B2 are not equal, and B1 is greater than B2. At the same time, the wall thickness of the composite pipe 20 is defined as H. In one embodiment, A1, A2, B1, B2 and H simultaneously satisfy the following conditions:

[0037] B2-A2=2H and B1-A1>2H

[0038] In the above formula, firstly, B2-A2=2H is satisfied. Since the outer surface of the first support portion 122 abutting against the composite pipe 20 is inclined toward the axial direction deviating from the support body 11, and the inner surface of the second support portion 132 abutting against the composite pipe 20 is inclined toward the axial direction close to the support body 11, it can be concluded that B1-A1>2H, and the value of B1-A1 can be calculated from the aforementioned inclination angle, which will not be elaborated in detail here. The above arrangement, on the one hand, forms a space that can be clamped between the inner support frame 12 and the outer support frame 13. When the packaging device 10 is clamped at the end of the composite pipe 20, the inner support frame 12 abuts against the inner wall of the composite pipe 20, and the outer support frame 13 abuts against the outer periphery of the composite pipe 20, so that the packaging device 10 can be mounted and fixed to the end of the packaging device 10 without additional connectors. On the other hand, this arrangement enables the inner support frame 12 and the outer support frame 13 to be accurately and tightly clamped on the composite pipe 20. When the packaging device 10 is clamped on the end of the composite pipe 20, the wall thickness of the composite pipe 20 can be directly accommodated between the end of the first support portion 122 away from the first connection portion 121 and the end of the second support portion 132 away from the second connection portion 131, thereby avoiding that when B2-A2<2H, the ends of the inner support frame 12 and the outer support frame 13 cause squeezing damage to the inner and outer surfaces of the composite pipe 20; and when B2-A2>2H, the packaging device 10 cannot completely fit and clamp the inner and outer surfaces of the composite pipe 20. After the packaging device 10 is completely wrapped and supported on the composite pipe 20, since the packaging device 10 is made of elastic material, the end of the first support portion 122 close to the first connection portion 121 and the end of the second support portion 132 close to the second connection portion 131 can be completely close to the inner and outer surfaces of the composite pipe 20, thereby achieving a tight connection between the packaging device 10 and the composite pipe 20.

[0039] The packaging device of the present application is used to wrap and support the composite pipe in transportation, and the packaging device is set at both ends of the composite pipe, which can better resist the impact during transportation, thereby effectively protecting the composite pipe. At the same time, the structure of the packaging device 10 is designed in imitation of the structure of a "spider leg", including an inner support frame 12 and an outer support frame 13 that are spaced apart from each other. The inner support frame 12 is used to support the inner wall of the composite pipe 20, and the outer support frame 13 is used to fix the outer periphery of the composite pipe 20, which has a good protective effect on the impact that the annular structure of the composite pipe 20 may be subjected to during the circulation process. The packaging device of the present application has a simple structure, and is designed to be more portable, low-cost, and lightweight. At the same time, compared with traditional packaging protection, the packaging device can be reused, which is beneficial to environmental protection and saves costs.

[0040] The technical content and technical features of the present application have been disclosed above. However, it is understood that, under the creative concept of the present application, those skilled in the art can make various changes and improvements to the above structures and materials, including combinations of technical features disclosed or claimed separately herein, and obviously including other combinations of these features. These variations and / or combinations all fall within the technical field involved in the present application and fall within the protection scope of the claims of the present application.

Claims

1. A packaging device for packaging a composite pipe, It is characterized in that The composite pipe is a hollow cylindrical structure, and two packaging devices are provided. The two packaging devices are respectively sleeved and fixed on the two ends of the composite pipe. The packaging device includes a support body, a plurality of inner support frames and a plurality of outer support frames. The support body is a disc part, and the plurality of inner support frames and the plurality of outer support frames are circumferentially spaced on the outside of the support body. The inner support frames abut against the inner wall of the composite pipe, and the outer support frames abut against the outer circumference of the composite pipe, so that the packaging device is clamped on the composite pipe.

2. The packaging device according to claim 1, It is characterized in that The inner support frame includes a first connecting portion and a first supporting portion, the first connecting portion is a strip-shaped plate, one end of several of the first connecting portions is circumferentially fixed to the outside of the supporting body, the first supporting portion is fixedly connected to the other end of the first connecting portion, and the first supporting portion is non-parallel to the first connecting portion.

3. The packaging device according to claim 2, It is characterized in that The first supporting portion is arranged toward the composite pipe, and an outer surface of the first supporting portion away from the first connecting portion abuts against an inner wall of the composite pipe. An angle between the outer surface of the first supporting portion abutting against the composite pipe and the axis of the composite pipe is in a range of 2° to 4°.

4. The packaging device according to claim 3, It is characterized in that The first connection portion includes two first connection segments connected to each other, and the two first connection segments make the first connection portion have a V-shaped structure. The V-shaped opening of the first connection portion is arranged toward the composite pipe, so that when the inner support frame is clamped in the composite pipe, the support body is placed in the inner cavity of the composite pipe.

5. The packaging device according to claim 2, It is characterized in that The outer support frame includes a second connecting part and a second supporting part, the second connecting part is a strip-shaped plate, one end of a plurality of the second connecting parts is fixed circumferentially to the outside of the supporting body, the second supporting part is fixedly connected to the other end of the second connecting part, the second supporting part is non-parallel to the second connecting part, and the second connecting part is spaced apart from the first connecting part.

6. The packaging device according to claim 5, It is characterized in that The second supporting portion is arranged toward the composite pipe, and an inner surface of the second supporting portion close to the second connecting portion abuts against an outer periphery of the composite pipe. An angle between the inner surface where the second supporting portion abuts against the composite pipe and the axis of the composite pipe is in a range of 4° to 6°.

7. The packaging device according to claim 5, It is characterized in that In the radial direction of the composite pipe, the distance between the outer sides of the two first supporting parts respectively away from the other end of the first connecting part is A2, the distance between the inner sides of the two second supporting parts respectively away from the other end of the second connecting part is B2, the wall thickness of the composite pipe is H, and B2-A2=2H.

8. The packaging device according to claim 6, It is characterized in that The second connecting portion includes two second connecting segments connected to each other, and the two second connecting segments make the second connecting portion have a V-shaped structure. The V-shaped opening of the second connecting portion is arranged toward the composite pipe, so that when the outer support frame is clamped on the composite pipe, the support body is placed in the inner cavity of the composite pipe.

9. The packaging device according to claim 1, It is characterized in that Four inner support frames and four outer support frames are respectively provided, and the four inner support frames and the four outer support frames are arranged at intervals from each other and are evenly distributed on the periphery of the support body.

10. The packaging device according to claim 1, It is characterized in that The packaging device is integrally formed by an additive manufacturing process.

11. The packaging device according to claim 1, It is characterized in that The packaging device is made of elastic non-metallic material.

12. The packaging device according to claim 1, It is characterized in that A through slot is provided on at least one of the support body, the plurality of inner support frames and the plurality of outer support frames.

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