Continuous winding bamboo fiber reinforced bamboo-plastic composite solid-wall pipe

Abstract

The utility model discloses a continuously wound bamboo fiber reinforced bamboo-plastic composite solid-wall pipe which comprises a spiral bamboo-plastic structure, an injection molding support and a tough plastic layer, and the spiral bamboo-plastic structure and the injection molding support are connected in a clamped mode to serve as a framework support. A tough plastic layer which completely wraps the spiral bamboo-plastic mechanism and the injection molding bracket is coated outside through an injection molding process, so that the pipeline has certain toughness, the pipeline can adapt to the vibration frequency when subjected to a dynamic load so as not to be damaged, the pipeline can be formed through an injection mold, the production cost is saved, and the production efficiency is improved. The injection molding support and the spiral bamboo-plastic mechanism are connected in a clamped mode, the injection molding support can support the spiral bamboo-plastic mechanism, the spiral bamboo-plastic mechanism cannot deform in the injection molding process, spiral rings of the spiral bamboo-plastic mechanism are evenly distributed, and it is ensured that the whole formed pipeline has the good dynamic load resisting capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a continuously wound bamboo fiber reinforced bamboo plastic composite solid wall pipe. Background Art

[0002] At present, urban drainage pipes mainly use a solid wall pipe made of polyethylene (PE). As the pipe diameter increases, the wall thickness needs to be increased accordingly to maintain the mechanical properties of the polyethylene wound solid wall pipe. However, increasing the wall thickness will lead to more raw materials, more difficult production and processing, more transportation costs, and more difficult installation.

[0003] The existing Chinese patent with authorization announcement number CN217301947U discloses a compression-resistant reinforced bamboo-plastic wrapped pipe, including: a pipe layer; and bamboo strips spirally wound in the pipe layer. The bamboo-plastic wrapped pipe is made by adding bamboo strips to a polyethylene-wound solid wall pipe, which can balance the ring stiffness and ring flexibility of the pipe, has excellent mechanical properties, is low in cost, and is green and environmentally friendly.

[0004] The disadvantage of the above-mentioned prior art solution is that when forming a wrapped plastic layer on the outside of the spirally wound bamboo strips, the carbonized bamboo strips need to be wound on the roller of the molding machine and extruded together with the molten polyethylene. The molding machine is required in the production process, and the cost of purchasing production equipment is high. Utility Model Content

[0005] The purpose of the utility model is to provide a continuously wound bamboo fiber reinforced bamboo plastic composite solid wall tube to solve the technical problem that in the prior art, when a wrapped plastic layer is formed on the outside of a spirally wound bamboo strip, the carbonized bamboo strip needs to be wound on the roller of a molding machine and extruded together with molten polyethylene, and a molding machine is needed in the production process, resulting in high cost of production equipment.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] A continuously wound bamboo fiber reinforced bamboo plastic composite solid wall pipe, comprising:

[0008] A tough plastic layer, wherein a spiral bamboo-plastic structure is arranged in the tough plastic layer, wherein the spiral bamboo-plastic structure comprises a spiral bamboo strip arranged in a spiral manner, and a rigid plastic layer is wrapped around the outer side of the spiral bamboo strip;

[0009] The injection molded bracket comprises a symmetrically arranged support ring 1 and a support ring 2, which are arranged in parallel. Support rods are evenly distributed in a ring between the support rings 1 and 2, and slots are evenly distributed along the length direction of the support rods. The support rods are connected to the spiral bamboo plastic structure through the slots.

[0010] As a further solution of the utility model: one end of the support rod is fixedly connected to the first support ring, and the other end of the support rod is fixedly connected to the second support ring.

[0011] As a further solution of the utility model: four support rods are provided.

[0012] As a further solution of the utility model: the spiral bamboo strips are carbonized.

[0013] As a further solution of the utility model: the size of the spiral bamboo strip is 3.2 mm wide and 1.5 mm thick.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model uses a spiral bamboo plastic mechanism and an injection molding bracket to be clamped together as a skeleton support, and then a tough plastic layer that completely wraps the spiral bamboo plastic mechanism and the injection molding bracket is applied through an injection molding process, so that the pipeline has a certain toughness. When the pipeline is subjected to a dynamic load, it can adapt to the vibration frequency and will not be damaged. The spiral bamboo plastic mechanism and the injection molding bracket are clamped together and put into a molding mold. The molding mold includes a tubular sleeve and a cylindrical mold core. The clamped spiral bamboo plastic mechanism and the injection molding bracket are coaxially arranged in the tubular sleeve, and then the cylindrical mold core is coaxially arranged in the injection molding bracket. Molten polyethylene is injected between the tubular sleeve and the cylindrical mold core, so that the polyethylene completely wraps the spiral bamboo plastic mechanism and the injection molding bracket. After the molten polyethylene solidifies, a tough plastic layer is formed. The molding of the pipeline can be realized through the injection mold, saving production costs;

[0016] 2. The utility model clamps the injection molding bracket with the spiral bamboo plastic mechanism, so that the injection molding bracket can support the spiral bamboo plastic mechanism, so that the spiral bamboo plastic mechanism will not be deformed during the injection molding process, and the spiral rings of the spiral bamboo plastic mechanism are evenly distributed, ensuring that the molded pipe as a whole has good dynamic load resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic cross-sectional view of part of the structure of the utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the spiral bamboo plastic mechanism of the utility model;

[0020] Figure 3 This utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the injection-molded bracket of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the connection relationship between the injection molding bracket and the spiral bamboo plastic mechanism of the utility model.

[0023] In the figure: 1. spiral bamboo-plastic mechanism; 11. rigid plastic layer; 12. spiral bamboo strip; 2. injection-molded bracket; 21. support ring 1; 22. support ring 2; 23. support rod; 24. slot; 3. tough plastic layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0025] like Figure 1-Figure 5 As shown, a continuously wound bamboo fiber reinforced bamboo plastic composite solid wall pipe comprises:

[0026] A tough plastic layer 3, wherein a spiral bamboo plastic structure 1 is arranged in the tough plastic layer 3, the tough plastic layer 3 completely wraps the spiral bamboo plastic structure 1, the spiral bamboo plastic structure 1 includes a spirally wound spiral bamboo strip 12, and the outer side of the spiral bamboo strip 12 is wrapped with a rigid plastic layer 11;

[0027] The injection molded bracket 2 includes a symmetrically arranged support ring 1 21 and a support ring 22. The support ring 1 21 and the support ring 22 are arranged in parallel. Support rods 23 are evenly distributed in a ring between the support ring 1 21 and the support ring 22. Card grooves 24 are evenly distributed along the length direction of the support rods 23. The support rods 23 are card-connected with the spiral bamboo plastic structure 1 through the card grooves 24.

[0028] In some specific implementation schemes, one end of the support rod 23 is fixedly connected to the support ring 1 21, and the other end of the support rod 23 is fixedly connected to the support ring 2 22, and four support rods are provided.

[0029] The preparation method of the spiral bamboo-plastic structure 1 is as follows: remove the green skin of the bamboo surface, remove the bamboo gelatin layer, and then cut the bamboo strips longitudinally into sections and enter the winding production line, hot-bend and shape the bamboo strips on a heating screw and initially carbonize them, and combine the shaped spiral bamboo strips with the plastic layer in an appropriate high-temperature atmosphere (different plastic materials have different temperatures required to reach a molten state) for automatic carbonization, so that the bamboo strip fiber layer and the plastic layer are fully combined, wherein the optimal size of the bamboo strips is 3.2 mm wide and 1.5 mm thick. In one embodiment of the utility model, the material of the rigid plastic layer 11 can be polyethylene, polypropylene, polyvinyl chloride, polystyrene, etc.

[0030] The preparation method of the tough plastic layer 3 is: the spiral bamboo plastic mechanism 1 and the injection molding bracket 2 are clamped and placed in a molding mold, the molding mold includes a tubular sleeve and a cylindrical mold core, the clamped spiral bamboo plastic mechanism 1 and the injection molding bracket 2 are coaxially arranged in the tubular sleeve, and then the cylindrical mold core is coaxially arranged in the injection molding bracket 2, and molten polyethylene is injected between the tubular sleeve and the cylindrical mold core, so that the polyethylene completely wraps the spiral bamboo plastic mechanism 1 and the injection molding bracket 2. The tough plastic layer 3 is formed after the molten polyethylene solidifies. In one embodiment of the utility model, the material of the tough plastic layer 3 can be polyethylene, polypropylene, polyvinyl chloride, polystyrene, etc.

[0031] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0032] The spiral bamboo plastic mechanism 1 and the injection molding bracket 2 are mutually clamped as a skeleton support, and then a tough plastic layer 3 is applied to completely wrap the spiral bamboo plastic mechanism 1 and the injection molding bracket 2 through the injection molding process, so that the pipeline has a certain toughness. When the pipeline is subjected to dynamic load, it can adapt to the vibration frequency and will not be damaged. The molding of the pipeline can be realized through the injection mold, saving production costs;

[0033] By clamping the injection molding bracket 2 with the spiral bamboo molding mechanism 1, the injection molding bracket 2 can support the spiral bamboo molding mechanism 1, so that the spiral bamboo molding mechanism 1 will not deform during the injection molding process, and the spiral rings of the spiral bamboo molding mechanism 1 are evenly distributed, ensuring that the molded pipe as a whole has good dynamic load resistance.

[0034] Several embodiments of the utility model are described in detail above, but the embodiments of the utility model are not limited thereto and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A continuously wound bamboo fiber reinforced bamboo plastic composite solid wall pipe, characterized in that: include: A tough plastic layer (3), wherein a spiral bamboo plastic structure (1) is arranged inside the tough plastic layer (3), wherein the spiral bamboo plastic structure (1) comprises a spiral bamboo strip (12) which is spirally wound, and a rigid plastic layer (11) is wrapped around the outer side of the spiral bamboo strip (12); The injection molded support (2) comprises a symmetrically arranged support ring 1 (21) and a symmetrically arranged support ring 2 (22). The support ring 1 (21) and the support ring 2 (22) are arranged in parallel. Support rods (23) are evenly distributed in an annular shape between the support ring 1 (21) and the support ring 2 (22). Clamping grooves (24) are evenly distributed along the length direction of the support rods (23). The support rods (23) are clamped with the spiral bamboo plastic structure (1) through the clamping grooves (24).

2. The continuously wound bamboo fiber reinforced bamboo plastic composite solid wall pipe according to claim 1, characterized in that: One end of the support rod (23) is fixedly connected to the first support ring (21), and the other end of the support rod (23) is fixedly connected to the second support ring (22).

3. The continuously wound bamboo fiber reinforced bamboo plastic composite solid wall pipe according to claim 1, characterized in that: Four support rods are provided.

4. The continuously wound bamboo fiber reinforced bamboo plastic composite solid wall pipe according to claim 1, characterized in that: The spiral bamboo strip (12) is subjected to carbonization treatment.

5. The continuously wound bamboo fiber reinforced bamboo plastic composite solid wall pipe according to claim 1, characterized in that: The dimensions of the spiral bamboo strip (12) are 3.2 mm wide and 1.5 mm thick.

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