Fiber reinforced composite pipe injection molding joint

Abstract

The utility model discloses a fiber reinforced composite pipe injection molding joint, and relates to the field of composite pipe injection molding joint devices. The fiber reinforced composite pipe injection molding connector comprises a composite pipeline, an injection molding connector body is arranged at the end of the composite pipeline, and the injection molding connector body comprises a thick pipe head and a thin pipe head; a core layer is arranged in the composite pipeline, the thin pipe head is connected to the peripheral wall of the injection molding connector body in a sleeving mode, the thick pipe head is connected to the peripheral wall of the core layer in an inserted mode, and the thick pipe head is fixedly connected with the core layer. According to the fiber-reinforced composite pipe injection molding connector, the injection molding connector body is fixedly connected to the end of the composite pipe in a hot melting mode, the end face of a pipeline can be sealed so that it can be guaranteed that the end face of the pipeline does not leak water, it can also be guaranteed that a medium does not permeate into the pipeline wall when the pipeline is conveyed, and meanwhile butt welding hot melting connection is directly adopted during pipeline connection; independent pipeline connecting pieces can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipe injection-molded joints, in particular to a fiber-reinforced composite pipe injection-molded joint. Background Art

[0002] Fiber reinforced composite pipe is a composite material pipe formed by winding, molding or pultrusion of reinforcing fiber materials, such as glass fiber, carbon fiber, aramid fiber, etc., with matrix materials.

[0003] The existing fiber-reinforced composite pipes cannot be tightly connected and fixed through pipe connectors, and there will be very small gaps, which may easily cause the medium to penetrate through the gaps and cause damage to the entire pipe.

[0004] The reason for this problem is that the current fiber reinforced composite pipes are limited in length and are connected to each other through pipe connectors when in use. Since the connectors and the fiber reinforced composite pipes are made of different materials, the two are not easy to connect tightly, and there will be very small gaps on the end faces of the composite pipes. As a result, when transporting media, the media will penetrate through the gaps, which can easily lead to damage to the entire pipeline. In view of the shortcomings of the existing technology, we propose a fiber reinforced composite pipe injection molding joint to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a fiber-reinforced composite pipe injection molding joint, which solves the problem that the current fiber-reinforced composite pipe cannot be tightly connected and fixed through pipe connectors, and there will be very tiny gaps, which may easily cause the medium to penetrate through the gaps and cause damage to the entire pipeline.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a fiber reinforced composite pipe injection joint, comprising an injection joint body, the injection joint body comprising a thick pipe head and a thin pipe head, the thin pipe head is located on one side of the thick pipe head and extends along the axis;

[0007] The end of the injection-molded joint body is connected with a composite pipe;

[0008] The composite pipe is provided with a core layer, a fiber reinforcement layer and a protective layer in sequence from the inside to the outside;

[0009] The thick pipe head is fixedly connected to the core layer.

[0010] Preferably, the core layer, the fiber reinforcement layer and the protective layer are stacked in sequence to form a tubular structure.

[0011] Preferably, the length of the core layer is greater than the lengths of the fiber reinforcement layer and the protective layer.

[0012] Preferably, the thick tube head and the thin tube head are integrally formed.

[0013] Preferably, the thin tube head is sleeved and fixed on the end side of the protective layer.

[0014] Preferably, the inner diameter of the core layer is equal to the inner diameter of the thin tube head.

[0015] The utility model discloses a fiber reinforced composite pipe injection molding joint, which has the following beneficial effects: the fiber reinforced composite pipe injection molding joint, by hot-melt fixing the connection of the injection molding joint body at the end of the composite pipe, can not only seal the end face of the pipe to ensure that the end face of the pipe does not leak, but also ensure that the medium does not penetrate into the pipe wall during pipeline transportation, and at the same time, butt welding hot-melt connection is directly adopted when connecting the pipes, which can reduce separate pipe connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of the composite pipe of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the injection-molded connector body of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the composite pipe and the injection-molded joint body of the utility model.

[0020] In the figure: 1, composite pipe; 101, core layer; 102, fiber reinforcement layer; 103, protective layer; 2, injection molded joint body; 201, thin pipe head; 202, thick pipe head. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The embodiment of the present application provides a fiber-reinforced composite pipe injection molding joint, which solves the problem that the current fiber-reinforced composite pipe cannot be tightly connected and fixed through a pipe connector, and there will be very small gaps, which may easily cause the medium to penetrate through the gaps and cause damage to the entire pipe.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The utility model embodiment discloses a fiber reinforced composite pipe injection molding joint.

[0025] According to the attached Figure 1-3 As shown, a fiber reinforced composite pipe injection molding joint includes a composite pipe 1. The composite pipe 1 is mainly a composite material formed by winding, molding or pultrusion of reinforcing fiber materials such as glass fiber, carbon fiber, etc. with a matrix material. The composite pipe has the characteristics of high strength, good corrosion resistance and durability. The fiber reinforced composite pipe can meet the needs of modern structures developing towards large spans, heights, heavy loads, light weight and high strength, and working under harsh conditions. At the same time, it can also meet the requirements of the industrial development of modern construction and is increasingly widely used in various civil buildings, bridges, highways, oceans, hydraulic structures, underground structures and other fields.

[0026] An injection-molded joint body 2 is provided at the end of the composite pipe 1, and the injection-molded joint body 2 includes a thick pipe head 202 and a thin pipe head 201;

[0027] An injection-molded joint body 2, the injection-molded joint body 2 comprising a thick tube head 202 and a thin tube head 201, the thin tube head 201 being located on one side of the thick tube head 202 and extending along the axis;

[0028] The end of the injection-molded joint body 2 is connected to a composite pipe 1;

[0029] The composite pipe 1 is provided with a core layer 101, a fiber reinforcement layer 102 and a protective layer 103 in sequence from the inside to the outside;

[0030] The thick pipe head 202 is fixedly connected to the core layer (101). By sleeve-fitting the thick pipe head 202 and the thin pipe head 201 on the end side of the composite pipe 1 and fixing them by hot-melt, the sealing of the connection of the composite pipe 1 can be increased to ensure that the end face of the pipe does not leak, and avoid the situation that when the pipe is transporting the medium, the medium easily penetrates into the pipe wall, causing the pipe to be damaged and the protective effect to be reduced.

[0031] The outer peripheral wall of the core layer 101 is fixedly connected with a fiber reinforced layer 102 and a protective layer 103 in sequence. The fiber reinforced layer 102 is the main supporting layer of the composite pipe 1, which makes the pipe have the advantages of high layer strength, good toughness, and high temperature resistance. The protective layer 103 can not only increase the aesthetics of the pipe appearance, but also improve the UV resistance of the pipe, thereby increasing the service life of the composite pipe 1.

[0032] The length of the core layer 101 is greater than that of the fiber-reinforced layer 102 and the protective layer 103 , so as to facilitate better sleeve fixing with the injection-molded joint body 2 and increase the tightness between the two.

[0033] The thick pipe head 202 and the thin pipe head 201 are fixedly connected, and the thin pipe head 201 is sleeved and fixed on the end side of the protective layer 103. The injection-molded joint body 2 is fixed by hot-melting the core layer 101 and the end of the protective layer 103 on the composite pipe 1, which can not only seal the end face of the pipe to ensure that the end face of the pipe does not leak, but also ensure that the medium does not penetrate into the pipe wall during pipeline transportation. At the same time, butt welding and hot-melt connection are directly adopted when connecting the pipes, which can reduce separate pipe connectors and save costs.

[0034] When the utility model is used, firstly, the fiber reinforcement layer 102 and the protective layer 103 on the end face of the composite pipe 1 are removed by 5mm to 20mm, so that the length of the core layer 101 is longer than the cross-section of the fiber reinforcement layer 102 and the protective layer 103, and then the pipe end is fed into the injection molding machine by 50mm to 200mm, and the pipe is preheated according to the feeding length, and finally the pipe end is sequentially sleeved on the outer peripheral wall of the core layer 101 and the protective layer 103 for hot-melt fixing, so that the connection of the pipe is completed.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fiber-reinforced composite pipe injection molding joint, comprising an injection molding joint body (2), characterized in that: The injection-molded joint body (2) comprises a thick tube head (202) and a thin tube head (201), wherein the thin tube head (201) is located on one side of the thick tube head (202) and extends along the axis; The end of the injection-molded joint body (2) is connected to a composite pipe (1); The composite pipe (1) is provided with a core layer (101), a fiber reinforcement layer (102) and a protective layer (103) in sequence from the inside to the outside; The thick tube head (202) is fixedly connected to the core layer (101).

2. A fiber reinforced composite pipe injection molding joint according to claim 1, characterized in that: The core layer (101), the fiber reinforcement layer (102) and the protective layer (103) are stacked in sequence to form a tubular structure.

3. A fiber reinforced composite pipe injection molding joint according to claim 2, characterized in that: The length of the core layer (101) is greater than the lengths of the fiber reinforcement layer (102) and the protective layer (103).

4. The fiber-reinforced composite pipe injection molding joint according to claim 1, characterized in that: The thick tube head (202) and the thin tube head (201) are integrally formed.

5. The fiber-reinforced composite pipe injection molding joint according to claim 2, characterized in that: The thin tube head (201) is sleeved and fixed on the end side of the protective layer (103).

6. The fiber-reinforced composite pipe injection molding joint according to claim 1, characterized in that: The inner diameter of the core layer (101) is equal to the inner diameter of the thin tube head (201).

Images