Sealing die for steel wire mesh reinforced polyethylene composite pipeline

Abstract

The utility model discloses a sealing mould for a steel wire mesh reinforced polyethylene composite pipeline, which relates to the technical field of pipeline moulds and comprises a circular mould body, four sealing ring grooves are arranged on the mould body, and the bottom widths of the four sealing ring grooves from inside to outside are respectively not less than 9mm, not less than 9.5 mm, not less than 12mm and not less than 13mm. The inclined opening depth of the sealing ring groove is 10 mm, the bottom of the sealing ring groove is chamfered, the R angle is 6-8 mm, and the total depth of the sealing ring groove is 16-20 mm; due to the specific size design of the sealing ring groove, it is effectively ensured that the molten polyethylene can evenly and fully wrap the steel wire mesh, the outward protruding phenomenon is effectively avoided, and the appearance quality and the sealing performance of the pipeline are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline molds, and particularly relates to a sealing mold for a steel wire mesh reinforced polyethylene composite pipeline. Background Technique

[0002] In the production process of steel wire mesh reinforced polyethylene composite pipelines, a key link is to ensure that the steel wire mesh can be firmly and effectively re-wrapped in the polyethylene layer after the pipeline is cut. The way of re-sealing can be achieved by heating both ends of the pipeline to melt the polyethylene, and then contacting both ends of the pipeline with the mold, so that the melted polyethylene material is extruded to wrap the exposed steel wire mesh. The existing outer diameters of steel wire mesh reinforced polyethylene composite pipelines are dn75, dn90, dn110, dn160, dn200, dn250, dn315, dn355, dn400, etc. In most cases, pipelines with dn160, dn200, dn250 and dn315 are used more frequently.

[0003] In the current market, although there are various sealing technologies, the commonly used methods often cannot accurately correspond to the actual pipeline sizes. If ordinary plate-shaped molds are used for contact, the polyethylene at both ends of the pipeline is likely to protrude too much, which not only affects the appearance, but also may reduce the sealing performance and pressure-bearing capacity of the pipeline. Therefore, it is very necessary to design a special sealing mold. Content of the Utility Model

[0004] To solve the above problems, the utility model proposes a sealing mold for a steel wire mesh reinforced polyethylene composite pipeline, which includes a circular mold body. Four sealing ring grooves are opened on the mold body. The bottom widths of the four sealing ring grooves from the inside to the outside are not less than 9mm, not less than 9.5mm, not less than 12mm and not less than 13mm respectively. The inclined depth of the sealing ring groove is 10mm, and the bottom of the sealing ring groove is chamfered with an R angle of 6 - 8mm. The total depth of the sealing ring groove is 16 - 20mm.

[0005] Further, the outer diameters of the four sealing ring grooves from the inside to the outside are 160mm, 200mm, 250mm and 315mm respectively.

[0006] Further, the side wall of the sealing ring groove is an inclined plane, and the inclination angle of the inclined plane is 25 degrees.

[0007] Further, a middle through hole is opened at the axis center of the mold body.

[0008] Further, a plurality of mounting holes are also opened at the edge end of the end face of the mold body.

[0009] The beneficial effects of the utility model are as follows:

[0010] By designing a mold body with sealing ring grooves of multiple specifications, it can precisely match common specifications such as ddn160, dn200, dn250, and dn315, significantly improving the accuracy and efficiency of sealing. The specific size design of the sealing ring grooves, including the bottom width, bevel depth, R angle, and total depth, ensures that the molten polyethylene can evenly and fully wrap the wire mesh, effectively avoiding the protrusion phenomenon and improving the appearance quality and sealing performance of the pipeline. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the present utility model.

[0012] Explanation of the reference numerals in the drawings is as follows: 1. Mold body; 2. Sealing ring groove; 3. Middle through-hole; 4. Mounting hole. Detailed Embodiment

[0013] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0014] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0015] The following further describes the present utility model in conjunction with the drawings of the specification:

[0016] A sealing mold for a wire mesh reinforced polyethylene composite pipeline, as Figure 1 shown, includes a circular mold body 1. Four sealing ring grooves 2 are provided on the mold body 1. A middle through-hole 3 is provided at the axis of the mold body 1, and a plurality of mounting holes 4 are also provided at the edge end of the end face of the mold body 1.

[0017] As Figure 1As shown, in this embodiment, the outer diameters of the four sealing ring grooves 2 from the inside to the outside are 160 mm, 200 mm, 250 mm, and 315 mm respectively, so as to adapt to most pipelines. The bottom widths of the four sealing ring grooves 2 from the inside to the outside are not less than 9 mm, not less than 9.5 mm, not less than 12 mm, and not less than 13 mm respectively, so as to adapt to the wall thicknesses of the respective pipelines. The inclined mouth depth of the sealing ring groove 2 is 10 mm, and the bottom of the sealing ring groove 2 is chamfered with an R angle of 6 - 8 mm. The total depth of the sealing ring groove 2 is 16 - 20 mm. The side wall of the sealing ring groove 2 is an inclined plane, and the inclination angle of the inclined plane is 25 degrees.

[0018] The working principle of the present utility model is as follows:

[0019] Firstly, the two ends of the pipeline are locally and precisely heated by a heating plate. The heating temperature and time are precisely controlled according to the melting characteristics of polyethylene to ensure that the polyethylene material melts uniformly, while avoiding a decrease in material performance caused by overheating. During the heating process, the polyethylene at the two ends of the pipeline gradually melts to form a soft molten layer.

[0020] Immediately afterwards, by using the design of the sealing ring groove 2 on the mold body 1, the mold is pressed against the two ends of the pipeline, so that the molten polyethylene uniformly and fully wraps the exposed wire mesh under the action of pressure. The pipeline with corresponding dimensions contacts the sealing ring groove 2 with corresponding dimensions on the mold body 1. The specific dimensions and shape of the sealing ring groove 2 ensure the flow direction and wrapping effect of the molten polyethylene, effectively avoiding the phenomenon of excessive protrusion of polyethylene.

[0021] The middle through hole 3 is provided to provide a passing space or an installation space, so that a rod can be arranged to pass through or be installed in the middle through hole 3 and extend into the pipeline interior to remove the polyethylene adhered to the inner wall of the pipeline after the polyethylene melts.

[0022] The above shows and describes the basic principle, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A wire mesh reinforced polyethylene composite pipe sealing mold, comprising a circular mold body (1), characterized in that: The mold body (1) is provided with four sealing ring grooves (2), the bottom widths of the four sealing ring grooves (2) from the inside to the outside are respectively not less than 9 mm, not less than 9.5 mm, not less than 12 mm and not less than 13 mm, the bevel depth of the sealing ring groove (2) is 10 mm, the bottom of the sealing ring groove (2) is chamfered, the R angle is 6-8 mm, and the total depth of the sealing ring groove (2) is 16-20 mm.

2. The wire mesh reinforced polyethylene composite pipe sealing mold according to claim 1, characterized in that: The outer diameters of the four sealing ring grooves (2) from inside to outside are 160 mm, 200 mm, 250 mm and 315 mm respectively.

3. The wire mesh reinforced polyethylene composite pipe sealing mold according to claim 1, characterized in that: The side wall of the sealing ring groove (2) is an inclined surface, and the inclination angle of the inclined surface is 25 degrees.

4. The wire mesh reinforced polyethylene composite pipe sealing mold according to claim 1, characterized in that: A central through hole (3) is provided at the axis center of the mold body (1).

5. The wire mesh reinforced polyethylene composite pipe sealing mold according to claim 1, characterized in that: The edge of the end surface of the mold body (1) is also provided with a plurality of mounting holes (4).

Images