Metal inner core carbon fiber tube winding tool

Abstract

The utility model belongs to the technical field of composite material high-pressure pipe manufacturing, and particularly relates to a metal inner core carbon fiber pipe winding tool which comprises a tool body, a metal inner core carbon fiber pipe is fixedly installed on the outer surface of the tool body, the metal inner core carbon fiber pipe comprises a metal pipe and a carbon fiber winding layer, the carbon fiber winding layer is wound on the outer surface of the metal pipe, the tool body comprises a mandrel and a metal expansion sleeve, the metal expansion sleeve is arranged on the outer surface of the mandrel in a sleeving mode, the metal pipe is arranged on the outer surface of the mandrel in a sleeving mode, and the metal pipe and the mandrel are installed through the metal expansion sleeve; according to the utility model, the mandrel and the metal tube do not slide relative to each other, the mandrel and the metal tube have better concentricity, and meanwhile, the mandrel and the metal tube are convenient to demould, so that the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material high-pressure pipe manufacturing, in particular to a metal inner core carbon fiber pipe winding tool. Background Art

[0002] Carbon fiber tubes with metal cores offer exceptional strength and stiffness, performing exceptionally well under tension, compression, and bending forces. They can also significantly reduce structural weight, making them crucial in weight-critical applications such as aerospace.

[0003] Carbon fiber tubes are typically manufactured using a winding process, where a metal tube is placed over a mandrel mounted on the main shaft of a winding machine. The winding machine then drives the tube in a circular motion. However, some existing metal tubes have circular holes within them, which causes the mandrel and tube to slide against each other, preventing the winding machine's rotational motion from being transmitted to the tube. Therefore, a tool for winding carbon fiber tubes with a metal core was proposed to address this issue. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art and solve the problems of mutual sliding and poor concentricity between the existing core shaft and the metal tube, the utility model provides a metal inner core carbon fiber tube winding tool.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows: the utility model discloses a metal inner core carbon fiber tube winding tool, comprising a tool body, the outer surface of which is fixedly mounted a metal inner core carbon fiber tube, the metal inner core carbon fiber tube comprising a metal tube and a carbon fiber winding layer, the carbon fiber winding layer being wound around the outer surface of the metal tube;

[0006] The tool body includes a core shaft and a metal expansion sleeve. The metal expansion sleeve is sleeved on the outer surface of the core shaft. The metal tube is sleeved on the outer surface of the core shaft. The metal tube is installed on the core shaft through the metal expansion sleeve.

[0007] Preferably, the inner and outer walls of the metal expansion sleeve are tightly fitted with the outer circumferential surface of the core shaft and the inner circumferential surface of the metal tube respectively.

[0008] Preferably, the core shaft includes a rib installed on the left end of the core shaft through a connecting assembly, a front support ring is fixedly installed on the left side of the outer surface of the core shaft, and a rear support ring is fixedly installed on the right side of the outer surface of the core shaft.

[0009] Preferably, the rib is movably connected to the core shaft via a connecting assembly.

[0010] Preferably, the connecting assembly includes a threaded rod fixedly connected to the left end of the core shaft, an internally threaded sleeve is threadedly connected to the outer surface of the threaded rod, and the internally threaded sleeve is fixedly connected to the retaining edge.

[0011] Preferably, the inner side wall of the rib is in contact with the left end of the outer surface of the core shaft.

[0012] Preferably, the rib is configured as a ring structure, and the outer diameter of the rib is larger than the outer diameter of the metal tube.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model can prevent relative sliding between the core shaft and the metal tube, and the core shaft and the metal tube have good concentricity. At the same time, the core shaft and the metal tube are easy to demould, thereby reducing labor intensity.

[0015] 2. The rib of the utility model is connected to the threaded rod and the core shaft through an internal threaded sleeve, and the position of the rib can be adjusted by rotating the internal threaded sleeve, so that the tool can adapt to metal pipes of different lengths, meet more usage requirements, and have strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of a partial cross-sectional structure in Example 1;

[0018] Figure 2 This is a schematic diagram of the front view of the tool body in Example 1;

[0019] Figure 3 This is a schematic diagram of the front view structure of the core shaft in Example 1;

[0020] Figure 4 It is a schematic diagram of a partial cross-sectional structure of the core shaft in Example 1;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the metal core carbon fiber tube in Example 1.

[0022] In the figure: 1. Carbon fiber tube with metal inner core; 11. Metal tube; 12. Carbon fiber winding layer; 2. Mandrel; 21. Side rib; 22. Front support ring; 23. Rear support ring; 24. Internally threaded sleeve; 25. Threaded rod; 3. Metal expansion sleeve; 4. Tool body. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figure 1-5 As shown, a metal inner core carbon fiber tube winding tool includes a tool body 4, a metal inner core carbon fiber tube 1 is fixedly mounted on the outer surface of the tool body 4, the metal inner core carbon fiber tube 1 includes a metal tube 11 and a carbon fiber winding layer 12, and the carbon fiber winding layer 12 is wound on the outer surface of the metal tube 11;

[0026] The tool body 4 includes a core shaft 2 and a metal expansion sleeve 3. The metal expansion sleeve 3 is sleeved on the outer surface of the core shaft 2. The metal tube 11 is sleeved on the outer surface of the core shaft 2. The metal tube 11 is installed with the core shaft 2 through the metal expansion sleeve 3. When working, the metal tube 11 can be positioned and sleeved on the outer surface of the core shaft 2 through the core shaft 2 of the tool body 4. After the metal tube 11 is installed in place, the metal expansion sleeve 3 is inserted from one end of the core shaft 2 until the end face of the metal expansion sleeve 3 contacts the metal tube 11, and then the metal expansion sleeve 3 is tightened. Screw until the inner and outer walls of the metal expansion sleeve 3 are in close contact with the outer circumference of the core shaft 2 and the inner circumference of the metal tube 11, thereby providing friction through the metal expansion sleeve 3, so that the core shaft 2 and the metal tube 11 rotate together. When all are assembled in place, the core shaft 2 is placed on the winding machine, and the carbon fiber winding layer 12 is wound onto the metal tube 11 by the winding machine. After the product is cured, it is demoulded and the metal expansion sleeve 3 screws are removed. The metal expansion sleeve 3 can be removed from the core shaft 2, so that the product can be easily and completely removed from the core shaft 2, which is convenient for demoulding.

[0027] The inner and outer walls of the metal expansion sleeve 3 are respectively tightly fitted with the outer circumferential surface of the core shaft 2 and the inner circumferential surface of the metal tube 11; during operation, the metal expansion sleeve 3 provides friction to make the core shaft 2 and the metal tube 11 rotate together.

[0028] The core shaft 2 includes a rib 21 installed on the left end of the core shaft 2 through a connecting assembly, a front support ring 22 is fixedly installed on the left side of the outer surface of the core shaft 2, and a rear support ring 23 is fixedly installed on the right side of the outer surface of the core shaft 2; during operation, the rib 21 plays an axial positioning role on the metal tube 11, and the front support ring 22 and the rear support ring 23 play a radial supporting role on the metal tube 11, thereby facilitating the positioning of the metal tube 11 on the outer surface of the core shaft 2.

[0029] The rib 21 is movably connected to the core shaft 2 via a connecting assembly, which facilitates the adjustment and movement of the rib 21 during operation.

[0030] The connecting assembly includes a threaded rod 25 fixedly connected to the left end of the core shaft 2, and the outer surface of the threaded rod 25 is threadedly connected to an internal threaded sleeve 24, and the internal threaded sleeve 24 is fixedly connected to the rib 21; when working, the rib 21 is threadedly connected to the threaded rod 25 through the internal threaded sleeve 24 to connect with the core shaft 2, and the position of the rib 21 can be adjusted by rotating the internal threaded sleeve 24, so that the tooling can adapt to metal pipes 11 of different lengths, and the tooling can meet more usage requirements and is more practical.

[0031] The inner side wall of the rib 21 is in contact with the left end of the outer surface of the core shaft 2 ; during operation, the rib 21 can be moved from the outer surface of the core shaft 2 to adjust its position.

[0032] Example 2

[0033] See also Figure 1 and Figure 3 As shown, compared with Example 1, as another implementation of the present invention, the rib 21 is arranged into a ring structure, and the outer diameter of the rib 21 is larger than the outer diameter of the metal tube 11; when working, it is convenient for the rib 21 to be movably connected with the threaded rod 25, and it is convenient for the rib 21 to fit and limit the metal tube 11.

[0034] Working principle: first push the metal tube 11 onto the core shaft 2 from one end until it hits the rib 21, and then the metal tube 11 contacts the outer surface of the front support ring 22 and the rear support ring 23 on the core shaft 2, which can ensure the radial positioning between the metal tube 11 and the core shaft 2, and avoid the problem that the contact surface between the metal tube 11 and the core shaft 2 is too large, causing problems such as difficulty in installation and disassembly. Since the rib 21 is threadedly connected to the threaded rod 25 and connected to the core shaft 2 through an internal threaded sleeve 24, the position of the rib 21 can be adjusted by rotating the internal threaded sleeve 24, so that the tooling can adapt to metal tubes 11 of different lengths, and the tooling can meet more usage requirements and is more practical, and then wait for the metal to be installed. After the metal tube 11 is installed in place, the metal expansion sleeve 3 is inserted from one end of the core shaft 2 until the end face of the metal expansion sleeve 3 contacts the metal tube 11, and then the screws on the metal expansion sleeve 3 are tightened until the inner and outer walls of the metal expansion sleeve 3 are in close contact with the outer circumference of the core shaft 2 and the inner circumference of the metal tube 11, thereby providing friction through the metal expansion sleeve 3 to make the core shaft 2 and the metal tube 11 rotate together. When all are assembled in place, the core shaft 2 is placed on the winding machine, and the carbon fiber winding layer 12 is wound onto the metal tube 11 by the winding machine. After the product is cured, it is demoulded and the screws of the metal expansion sleeve 3 are removed. The metal expansion sleeve 3 can be removed from the core shaft 2, so that the product can be easily and completely removed from the core shaft 2, which is convenient for demoulding.

[0035] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A metal inner core carbon fiber tube winding tool, comprising a tool body (4), a metal inner core carbon fiber tube (1) fixedly mounted on the outer surface of the tool body (4), the metal inner core carbon fiber tube (1) comprising a metal tube (11) and a carbon fiber winding layer (12), the carbon fiber winding layer (12) being wound around the outer surface of the metal tube (11); Its characteristics are: The tool body (4) comprises a core shaft (2) and a metal expansion sleeve (3); the metal expansion sleeve (3) is sleeved on the outer surface of the core shaft (2); the metal tube (11) is sleeved on the outer surface of the core shaft (2); and the metal tube (11) is installed with the core shaft (2) through the metal expansion sleeve (3).

2. The metal core carbon fiber tube winding tool according to claim 1, characterized in that: The inner and outer walls of the metal expansion sleeve (3) are respectively tightly fitted with the outer circumferential surface of the core shaft (2) and the inner circumferential surface of the metal tube (11).

3. The metal core carbon fiber tube winding tool according to claim 2, characterized in that: The core shaft (2) includes a retaining edge (21) mounted on the left end of the core shaft (2) through a connecting assembly, a front support ring (22) is fixedly mounted on the left side of the outer surface of the core shaft (2), and a rear support ring (23) is fixedly mounted on the right side of the outer surface of the core shaft (2).

4. The metal core carbon fiber tube winding tool according to claim 3, characterized in that: The retaining edge (21) is movably connected to the core shaft (2) via a connecting assembly.

5. The metal core carbon fiber tube winding tool according to claim 4, characterized in that: The connecting assembly comprises a threaded rod (25) fixedly connected to the left end of the core shaft (2); the outer surface of the threaded rod (25) is threadedly connected to an internal threaded sleeve (24); and the internal threaded sleeve (24) is fixedly connected to the retaining edge (21).

6. The metal core carbon fiber tube winding tool according to claim 5, characterized in that: The inner side wall of the retaining edge (21) is in contact with the left end of the outer surface of the core shaft (2).

7. The metal core carbon fiber tube winding tool according to claim 6, characterized in that: The rib (21) is configured as a ring structure, and the outer diameter of the rib (21) is larger than the outer diameter of the metal tube (11).

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