Reinforced polyethylene electric melting pipe fitting and machining method

Abstract

According to the reinforced polyethylene electric melting pipe fitting and the machining method, the machining method for forming the reinforced polyethylene electric melting pipe fitting by embedding a resistance wire into a reinforced polyethylene pipe section is disclosed, the reinforced polyethylene electric melting pipe fitting is connected with a plurality of steel wire winding pipes, and the pressure bearing capacity of the connecting position can be effectively improved; and the steel wire is kept consistent with the steel wire winding pipe. The reinforced polyethylene electric melting pipe fitting is characterized in that the reinforced polyethylene electric melting pipe fitting comprises a polyethylene pipe section, a resistance wire connector, a steel wire layer and a resistance wire, the polyethylene pipe section is of an inner-outer double-layer structure, the steel wire layer is arranged between an inner-layer pipe and an outer-layer pipe, the steel wire layer is formed by spirally winding steel wires on the inner-layer pipe, the outer-layer pipe completely wraps the steel wire layer, and the resistance wire connector is arranged between the inner-layer pipe and the outer-layer pipe. The polyethylene pipe section and the steel wire layer jointly form a reinforced polyethylene pipe section, the resistance wires are embedded in the inner wall of the reinforced polyethylene pipe section and are spirally arranged on the inner wall of the reinforced polyethylene pipe section, and spiral cutting grooves are formed in the inner wall of the reinforced polyethylene pipe section.

Description

Technical Field

[0001] The present invention discloses a reinforced polyethylene electric fusion pipe fitting and a processing method thereof, which relate to a reinforced electric fusion pipe fitting made of polyethylene and a processing method thereof, and belong to the technical field of water supply and drainage, and particularly to a processing method that can form a reinforced polyethylene electric fusion pipe fitting by burying a resistance wire in a reinforced polyethylene pipe section, and connect multiple wire-wound pipes through the reinforced polyethylene electric fusion pipe fitting, thereby effectively improving the pressure-bearing capacity of the connection, and making the pressure-bearing capacity of the connection consistent with that of the wire-wound pipe. Background Art

[0002] The pipe is usually made of PE material, which has the advantage of strong corrosion resistance, but its rigidity and strength are always important issues faced by R&D personnel. At present, the usual way to solve the material problem of the pipe is to start from material research and development, which has a long R&D cycle and high comprehensive cost.

[0003] In order to improve the above problems, the applicant filed a Chinese utility model patent application with publication number CN210153353U and patent name "Wire Wrapped Tube". The wrapped tube improves the structure of the row tube based on the physical level, including: an inner tube extruded by the first hot melt extrusion, an outer tube extruded by the second hot melt extrusion, and a steel wire layer sandwiched between the inner tube and the outer tube. The rigidity and strength of the tube body are enhanced by internal reinforcement ribs, so that the tube body is not easy to deform along the axial direction, greatly reducing the deflection of the tube body along the axial direction, and also has better shear resistance.

[0004] In actual use of pipes, multiple wire wrapped pipes need to be laid end to end in a groove to meet the drainage distance requirements. However, wire wrapped pipes cannot be directly hot-melt welded because of the steel wire wrapped inside the pipe wall. Therefore, polyethylene expansion hot-melt connection, polyethylene electric fusion pipe connection or rubber sealing ring connection are required for end to end connection. However, in the above connection methods, the connection part is made of pure polyethylene material and has a low pressure bearing capacity. The pressure bearing capacity of the connected wire wrapped pipe is lower than the pressure bearing capacity of the wire wrapped pipe itself. If the pressure bearing capacity of the wire wrapped pipe itself is used for water supply and drainage, it is easy to cause the connection to be subjected to excessive pressure and rupture. If the pressure bearing capacity of the connection is used for water supply and drainage, it will cause a waste of drainage capacity of a large section of wire wrapped pipe. Summary of the invention

[0005] In order to improve the above situation, the present invention provides a reinforced polyethylene electric fusion pipe fitting and a processing method, which provides a processing method for forming a reinforced polyethylene electric fusion pipe fitting by burying a resistance wire into a reinforced polyethylene pipe section. By connecting multiple wire-wound pipes through the reinforced polyethylene electric fusion pipe fitting, the pressure-bearing capacity of the connection can be effectively improved to make it consistent with the wire-wound pipe.

[0006] The reinforced polyethylene electric fusion pipe fitting and the processing method of the present invention are realized as follows: The reinforced polyethylene electric fusion pipe fitting of the present invention comprises a polyethylene pipe section, a resistance wire joint, a steel wire layer and a resistance wire, The invention is characterized in that the polyethylene pipe section is an inner and outer double-layer structure, a steel wire layer is arranged between the inner layer pipe and the outer layer pipe, the steel wire layer is formed by spirally winding the steel wire on the inner layer pipe, the outer layer pipe completely covers the steel wire layer, the polyethylene pipe section and the steel wire layer together constitute a reinforced polyethylene pipe section, the resistance wire is buried on the inner wall of the reinforced polyethylene pipe section, and the resistance wire is spirally arranged on the inner wall of the reinforced polyethylene pipe section. Preferably, the inner wall of the reinforced polyethylene pipe section is provided with a spiral groove, and the resistance wire is embedded in the spiral groove. Preferably, the spirally arranged resistance wire has two sections, the two sections of the resistance wire are respectively located at two ends of the reinforced polyethylene pipe section, and the two sections of the resistance wire are connected. Preferably, the inner tube and the outer tube are both formed by hot melt extrusion, the steel wire is embedded in the inner tube, and the inner tube and the outer tube are adhered to each other. Preferably, the distance from the steel wire layer to the inner wall of the polyethylene pipe section is greater than the distance from the steel wire layer to the outer wall of the polyethylene pipe section. The pipe walls at both ends of the reinforced polyethylene pipe section are respectively provided with joint installation holes, and the resistance wire joints are placed in the joint installation holes. The two ends of the reinforced polyethylene pipe section are provided with resistance wire through holes at positions corresponding to the joint installation holes, and the resistance wire passes through the resistance wire through holes and is connected to the resistance wire joint. The present invention also relates to a method for processing a reinforced polyethylene electric fusion pipe fitting, which is characterized in that: a reinforced polyethylene electric fusion pipe fitting is formed by burying a resistance wire in the inner wall of a reinforced polyethylene pipe, and specifically comprises the following steps: (1) Producing reinforced polyethylene pipe sections through hot melt extrusion production lines; (2) Open joint installation holes on the pipe walls at both ends of the reinforced polyethylene pipe section, and open resistance wire penetration holes at positions corresponding to the joint installation holes; (3) Install the reinforced polyethylene pipe section on the CNC machine tool and clamp it so that the reinforced polyethylene pipe section and the machine tool spindle rotate together; (4) Use CNC machine tools to turn the inner circle of the reinforced polyethylene pipe section to ensure the roundness of the inner diameter of the pipe section, in preparation for the subsequent uniform embedding of the resistance wire; (5) Install the wire embedding tool on the feed axis of the CNC machine tool, use the cutting tool to open a spiral groove on the inner wall of the reinforced polyethylene pipe section, embed the resistance wire in the groove, and bury the resistance wire by extrusion to form a reinforced polyethylene electric fusion pipe fitting; (6) Remove the reinforced polyethylene electric fusion pipe fitting from the CNC machine tool, pass the end of the resistance wire through the resistance wire hole into the joint installation hole, and install the resistance wire joint into the joint installation hole and connect it to the resistance wire; The present invention also relates to a wire embedding tool, which comprises a heating component, a groove cutting component and an extrusion component, wherein the groove cutting component is placed on the heating component, the extrusion component is placed on the heating component, and the heating component is installed on a numerically controlled machine tool. The invention is characterized in that the grooving component performs spiral grooving on the reinforced polyethylene pipe section and buries the resistance wire in the groove at the same time, the extrusion component extrude the groove to bury the resistance wire, and the heating component heats the grooving component, so that when the grooving component performs spiral grooving, the polyethylene pipe walls on both sides of the groove soften, and the resistance wire is more easily buried in the groove. At the same time, the extrusion component presses the softened polyethylene pipe walls on both sides of the groove, so that the polyethylene pipe walls can be more tightly melted together to bury the resistance wire, thereby preventing the resistance wire from falling off from the groove and improving the stability of the buried resistance wire. The heating assembly is composed of a hollow heating column, a hollow supporting column, a cutting knife mounting groove, a first wire guide roller, a second wire guide roller, a heating coil and a heat conducting rod. One end of the hollow support column is placed on one end of the hollow heating column, and the hollow support column and the hollow heating column are connected. Preferably, the surface of the hollow heating column is coated with a heat-insulating material, and the wall thickness of one end of the hollow heating column is smaller than the wall thickness of the other end. Preferably, the surface of the hollow support column is coated with a heat-insulating material, and the hollow support column first extends horizontally for a distance from one end to the other end, and then bends and extends obliquely to the other end. A cutter installation slot is formed at the other end of the hollow support column, and the cutter installation slot is connected to the hollow support column. The heating coil is placed in the hollow heating column and connected to the inner wall of the hollow heating column. The heat conducting rod is placed in the hollow heating column. Preferably, the heat conducting rod is located in the heating coil, one end of the heat conducting rod is placed on the inner wall of the other end of the hollow heating column, and the other end of the heat conducting rod extends along the center line of the hollow heating column and the hollow support column to the other end of the hollow support column. The first wire guide roller is rotatably placed on the side wall of the other end of the hollow support column, and the second wire guide roller is rotatably placed on the side wall of one end of the hollow heating column. A connecting groove is provided at the other end of the hollow heating column, and a key groove is provided on the wall of the connecting groove. The hollow heating column is connected to the machine tool feed shaft through the connecting groove and the key groove. The cutting groove assembly is composed of a cutting knife, a resistance wire pressing hole and a resistance wire clamping groove. The cutter can be detachably placed in the cutter installation slot. There is a resistance wire pressing hole on the cutter surface and a resistance wire slot on the side of the cutter. Preferably, the cutting knife is in contact with the heat conducting rod. The extrusion assembly is composed of an extrusion roller and a roller bracket. The extrusion roller is rotatably placed at the other end of the hollow support column through the roller bracket. Preferably, the squeezing roller is located on one side of the cutting knife, and the lowest point of the squeezing roller is higher than the height of the cutting knife tip. Beneficial Effects

[0007] 1. By embedding resistance wire into the reinforced polyethylene pipe section to form a reinforced polyethylene electric fusion pipe fitting to connect multiple wire-wound pipes, the pressure-bearing capacity of the connection can be effectively improved, making it consistent with the wire-wound pipe, and avoiding rupture due to excessive pressure at the connection.

[0008] 2. The cutting knife is heated by the heating coil and the heat conducting rod. The hot knife cuts the groove. The polyethylene pipe walls on both sides of the groove soften, making it easier for the resistance wire to be buried in the groove.

[0009] 3. After the cutting knife is heated, the polyethylene tube wall is hot-cut. The softened polyethylene tube walls on both sides of the groove can be more tightly melted together under the action of the extrusion component to bury the resistance wire, prevent the resistance wire from falling off from the groove, and improve the stability of the buried resistance wire.

[0010] 4. Simple structure and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural diagram of a reinforced polyethylene electric fusion pipe fitting of the present invention; Figure 2 It is a structural schematic diagram of a reinforced polyethylene electric fusion pipe fitting of the present invention; Figure 3 This is a schematic structural diagram of a reinforced polyethylene electric fusion pipe fitting of the present invention, which only shows the structure of the resistance wire joint; Figure 4 It is a three-dimensional structural diagram of a wire embedding cutter of the present invention; Figure 5 It is a structural schematic diagram of a wire embedding cutter of the present invention; Figure 6 This is a schematic diagram of the structure of a wire embedding cutter of the present invention, which only shows the structure of the cutting knife. Attached photos

[0012] The components include: polyethylene pipe section (1), joint installation hole (2), resistance wire joint (3), steel wire layer (4), resistance wire (5), resistance wire perforation (6), hollow heating column (7), hollow support column (8), cutting knife installation groove (9), cutting knife (10), resistance wire pressing hole (11), extrusion roller (12), roller bracket (13), first wire guide roller (14), second wire guide roller (15), machine tool feed shaft (16), connecting groove (17), heating coil (18), heat conducting rod (19), resistance wire slot (20) DETAILED DESCRIPTION

[0013] The present invention discloses a reinforced polyethylene electric fusion pipe fitting comprising a polyethylene pipe section (1), a resistance wire joint (3), a steel wire layer (4) and a resistance wire (5). The invention is characterized in that the polyethylene pipe section (1) is a double-layer structure of inner and outer layers, a steel wire layer (4) is arranged between the inner layer pipe and the outer layer pipe, the steel wire layer (4) is formed by spirally winding steel wires on the inner layer pipe, the outer layer pipe completely covers the steel wire layer (4), the polyethylene pipe section (1) and the steel wire layer (4) together constitute a reinforced polyethylene pipe section (1), the resistance wire (5) is buried on the inner wall of the reinforced polyethylene pipe section (1), and the resistance wire (5) is spirally arranged on the inner wall of the reinforced polyethylene pipe section (1). Preferably, the inner wall of the reinforced polyethylene pipe section (1) is provided with a spiral groove, and the resistance wire (5) is embedded in the spiral groove. Preferably, the spirally arranged resistance wire (5) has two sections, the two sections of the resistance wire (5) are respectively located at two ends of the reinforced polyethylene pipe section (1), and the two sections of the resistance wire (5) are connected. Preferably, the inner tube and the outer tube are both formed by hot melt extrusion, the steel wire is embedded in the inner tube, and the inner tube and the outer tube are adhered to each other. Preferably, the distance between the steel wire layer (4) and the inner wall of the polyethylene pipe section (1) is greater than the distance between the steel wire layer (4) and the outer wall of the polyethylene pipe section (1). The walls of both ends of the reinforced polyethylene pipe section (1) are respectively provided with joint installation holes (2), and the resistance wire joints (3) are placed in the joint installation holes (2). The two ends of the reinforced polyethylene pipe section (1) are provided with resistance wire through holes (6) at positions corresponding to the joint installation holes (2), and the resistance wire (5) passes through the resistance wire through holes (6) and is connected to the resistance wire joint (3). When in use, the ends of the two steel wire wrapped pipes are cleaned and then inserted into the two ends of the reinforced polyethylene electric fusion pipe fittings respectively. The power is turned on and the resistance wire joint (3) is connected to the power supply. The resistance wire (5) generates heat to melt the polyethylene material on the inner wall of the reinforced polyethylene pipe section (1) and the outer wall of the steel wire wrapped pipe. The melted polyethylene materials fuse with each other. Then the power is turned off and the melted polyethylene material gradually cools and solidifies, so that the two steel wire wrapped pipes are firmly connected. The present invention provides a method for processing a reinforced polyethylene electric fusion pipe fitting, which is characterized in that: a resistance wire (6) is buried in the inner wall of the reinforced polyethylene pipe to form the reinforced polyethylene electric fusion pipe fitting, which specifically comprises the following steps: (1) Producing reinforced polyethylene pipe segments (1) by hot melt extrusion production line; Preferably, the reinforced polyethylene pipe section (1) is directly cut from a wire wound pipe. Preferably, the length of the reinforced polyethylene pipe section (1) is between 10 mm and 1000 mm; (2) opening joint installation holes (2) on the pipe walls at both ends of the reinforced polyethylene pipe section (1), and opening resistance wire through holes (6) at positions corresponding to the joint installation holes (2); (3) mounting the reinforced polyethylene pipe section (1) on a CNC machine tool and clamping the reinforced polyethylene pipe section (1) so that the reinforced polyethylene pipe section (1) and the main shaft of the machine tool rotate together; (4) Using a CNC machine tool to turn the inner diameter of the reinforced polyethylene pipe section (1) into a round shape to ensure the roundness of the inner diameter of the pipe section, in preparation for the subsequent uniform embedding of the resistance wire (5); (5) installing a wire embedding tool on an input shaft (16) of a numerical control machine tool, opening a spiral groove on the inner wall of the reinforced polyethylene pipe section (1) by means of a cutting knife (10), embedding a resistance wire (5) in the groove, and embedding the resistance wire (5) by extrusion, thereby forming a reinforced polyethylene electric fusion pipe fitting; (6) Remove the reinforced polyethylene electric fusion pipe fitting from the CNC machine tool, insert the end of the resistance wire (5) into the joint installation hole (2) through the resistance wire through-hole (6), and install the resistance wire joint (3) into the joint installation hole (2) and connect it to the resistance wire (5); Preferably, after the resistance wire connector (3) is installed in the connector installation hole (2) and connected to the resistance wire (5), power is turned on to detect whether there is a poor contact; The wire embedding tool comprises a heating component, a groove cutting component and an extrusion component, wherein the groove cutting component is placed on the heating component, the extrusion component is placed on the heating component, and the heating component is installed on a CNC machine tool. The invention is characterized in that the grooving component performs a spiral grooving on the reinforced polyethylene pipe section (1) and simultaneously buries the resistance wire (5) in the grooving; the extruding component extrude the grooving to bury the resistance wire (5); the heating component heats the grooving component so that when the grooving component performs the spiral grooving, the polyethylene pipe walls on both sides of the grooving soften, making it easier for the resistance wire (5) to be buried in the grooving; and the extruding component presses the softened polyethylene pipe walls on both sides of the grooving so that they can be more tightly fused together to bury the resistance wire (5), thereby preventing the resistance wire (5) from falling out of the grooving and improving the stability of the burying of the resistance wire (5); The heating assembly is composed of a hollow heating column (7), a hollow supporting column (8), a cutting knife mounting groove (9), a first wire guide roller (14), a second wire guide roller (15), a heating coil (18) and a heat conducting rod (19). One end of the hollow support column (8) is placed on one end of the hollow heating column (7), and the hollow support column (8) and the hollow heating column (7) are connected. Preferably, the surface of the hollow heating column (7) is coated with a heat insulating material, and the wall thickness of one end of the hollow heating column (7) is smaller than the wall thickness of the other end. Preferably, the surface of the hollow support column (8) is coated with a heat-insulating material, and the hollow support column (8) first extends horizontally for a distance from one end to the other end, and then bends and extends obliquely to the other end. A cutting knife installation groove (9) is formed at the other end of the hollow support column (8), and the cutting knife installation groove (9) is connected to the hollow support column (8). The heating coil (18) is placed in the hollow heating column (7) and connected to the inner wall of the hollow heating column (7). The heat conducting rod (19) is placed in the hollow heating column (7). Preferably, the heat conducting rod (19) is located inside the heating coil (18), one end of the heat conducting rod (19) is placed on the inner wall of the other end of the hollow heating column (7), and the other end of the heat conducting rod (19) extends along the center line of the hollow heating column (7) and the hollow support column (8) to the other end of the hollow support column (8). The first wire guide roller (14) is rotatably placed on the side wall of the other end of the hollow support column (8), and the second wire guide roller (15) is rotatably placed on the side wall of one end of the hollow heating column (7). The other end of the hollow heating column (8) is provided with a connecting groove (17), a key groove is provided on the groove wall of the connecting groove (17), and the hollow heating column (7) is connected to the machine tool feed shaft (16) through the connecting groove (17) and the matching key groove. The cutting groove assembly is composed of a cutting knife (10), a resistance wire pressing hole (11) and a resistance wire clamping groove (20). The cutting knife (10) is detachably placed in the cutting knife installation groove (9), a resistance wire pressing hole (11) is opened on the cutting knife (10) blade surface, and a resistance wire clamping groove (20) is opened on the side of the cutting knife (10). Preferably, the cutting knife (10) and the heat conducting rod (19) are in contact with each other. The extrusion assembly is composed of an extrusion roller (12) and a roller bracket (13). The squeezing roller (12) is rotatably placed at the other end of the hollow support column (8) via a roller bracket (13). Preferably, the squeezing roller (12) is located on one side of the cutting knife (10), and the lowest point of the squeezing roller (12) is higher than the height of the tip of the cutting knife (10); When in use, the heating coil (18) is connected to a power source and energized, the heating coil (18) heats the heat conducting rod (19), the heat of the heat conducting rod (19) is transferred to the cutting knife (10), so that the cutting knife (10) becomes hot, and at the same time the resistance wire (5) bypasses the first wire guide roller (14) and the second wire guide roller (15), passes through the resistance wire pressing hole (11) on the cutting knife (10), and is then placed in the resistance wire clamping groove (20), so that the resistance wire (5) is located under the cutting knife (10), and the heated cutting knife (10) is driven by a numerically controlled machine tool to spirally cut the reinforced polyethylene pipe section (1), and bury the resistance wire (5) in the groove. During the process of cutting and burying the wire, the extrusion roller (12) rotates to press the softened polyethylene pipe walls on both sides of the groove, squeezes them together, and buries the resistance wire (5) in the groove; The design that the distance between the steel wire layer (4) and the inner wall of the polyethylene pipe section (1) is greater than the distance between the steel wire layer (4) and the outer wall of the polyethylene pipe section (1) can provide space for opening the joint installation hole (2), thereby avoiding damage to the steel wire layer (4) during opening the hole and reducing the pressure-bearing strength of the electric fusion pipe fitting; The joint installation hole (2) cooperates with the resistance wire penetration hole (6) to enable the resistance wire joint (3) to be connected to the resistance wire (5) at both ends of the polyethylene pipe section (1). The resistance wire joint (3) and the polyethylene pipe section (1) are parallel, occupying a small space, reducing the risk of falling off due to collision or extrusion, improving the stability of the connection, and at the same time, not causing damage to the steel wire layer (4) during drilling to reduce the pressure bearing strength of the pipe section; The surface of the hollow heating column (7) is coated with a heat insulating material, and the surface of the hollow supporting column (8) is coated with a heat insulating material, which can play a role in heat preservation, preventing the heat from being lost to the external environment after the heating coil (18) heats the heat conducting rod (19), thereby reducing the heating effect on the cutting knife (10), and thus affecting the quality of the hot knife cutting groove; The design of the wall thickness of one end of the hollow heating column (7) being smaller than that of the other end can isolate the heat transfer between the machine tool feed shaft (18) and the heat conducting rod (19), protect the machine tool feed shaft (16) from the influence of high temperature, and ensure the accuracy and stability of the machine tool; The design of the first wire guide roller (14) and the second wire guide roller (15) working together to guide the resistance wire (5) can reduce the movement resistance of the resistance wire (5), and prevent the resistance wire (5) from being pulled out of the groove due to excessive tension during the process of embedding the groove, thereby affecting the embedding quality; The resistance wire pressing hole (11) cooperates with the resistance wire clamping slot (20) to limit the resistance wire (5), so that the resistance wire (5) can bypass the cutting knife (10) and be placed under the cutting knife (10), thereby reducing the risk of the resistance wire (5) falling off or deviating, and improving the stability of the buried resistance wire (5); The purpose is to form a reinforced polyethylene electric fusion pipe fitting by burying a resistance wire (5) in the reinforced polyethylene pipe section (1), and to connect a plurality of wire-wound pipes through the reinforced polyethylene electric fusion pipe fitting, thereby effectively improving the pressure bearing capacity of the connection and making it consistent with the wire-wound pipe.

[0014] It should be noted that, unless otherwise clearly specified and limited, the terms "placed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection method such as a folding connection, a rivet connection, a pin connection, a bonding connection and a welding connection, or a detachable connection method such as a threaded connection, a snap connection and a hinge connection, or an integral connection, or an electrical connection, or a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] It should be further pointed out that, when describing the above specific embodiments, for the sake of simplicity and clarity, only the differences between the above specific embodiments are described, but those skilled in the art should know that the above specific embodiments themselves are also independent technical solutions.

Claims

1. A method for processing reinforced polyethylene electric fusion pipe fittings, characterized in that: A reinforced polyethylene electric fusion pipe fitting is formed by burying a resistance wire (6) in the inner wall of a reinforced polyethylene pipe, and specifically comprises the following steps: (1) producing a reinforced polyethylene pipe section (1) by a hot melt extrusion production line; (2) opening joint installation holes (2) in the pipe walls at both ends of the reinforced polyethylene pipe section (1), and opening resistance wire through holes (6) at positions corresponding to the joint installation holes (2); (3) mounting the reinforced polyethylene pipe section (1) on a numerically controlled machine tool and clamping the reinforced polyethylene pipe section (1) so that the reinforced polyethylene pipe section (1) and the main shaft of the machine tool rotate together; (4) turning the inner circle of the reinforced polyethylene pipe section (1) by the numerically controlled machine tool to ensure the roundness of the inner diameter of the pipe section , in preparation for the subsequent uniform embedding of the resistance wire (5); (5) installing the wire embedding tool on the CNC machine tool feed shaft (16), using the cutting knife (10) to open a spiral groove on the inner wall of the reinforced polyethylene pipe section (1), and at the same time embedding the resistance wire (5) into the groove, and burying the resistance wire (5) by extrusion to form a reinforced polyethylene electric fusion pipe fitting; (6) removing the reinforced polyethylene electric fusion pipe fitting from the CNC machine tool, passing the end of the resistance wire (5) through the resistance wire through-hole (12) into the joint installation hole (2), and installing the resistance wire joint (3) into the joint installation hole (2) and connecting it with the resistance wire (5).

2. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 1, characterized in that The reinforced polyethylene electric fusion pipe fitting comprises a polyethylene pipe section (1), a resistance wire joint (3), a steel wire layer (4) and a resistance wire (5). The polyethylene pipe section (1) is an inner and outer double-layer structure. A steel wire layer (4) is arranged between the inner pipe and the outer pipe. The steel wire layer (4) is formed by spirally winding steel wires on the inner pipe. The outer pipe completely covers the steel wire layer (4). The polyethylene pipe section (1) and the steel wire layer (4) together constitute a reinforced polyethylene pipe section (1). The resistance wire (5) is buried in the inner wall of the reinforced polyethylene pipe section (1). The resistance wire (5) is spirally arranged on the inner wall of the reinforced polyethylene pipe section (1). The inner wall of the reinforced polyethylene pipe section (1) is provided with a spiral groove. The resistance wire (5) is buried in the spiral groove. The spirally arranged resistance wire (5) There are two sections, the two sections of the resistance wire (5) are respectively located at the two ends of the reinforced polyethylene pipe section (1), the two sections of the resistance wire (5) are connected, the inner layer pipe and the outer layer pipe are formed by hot melt extrusion, the steel wire is embedded in the inner layer pipe, the inner layer pipe and the outer layer pipe are adhered to each other, the distance from the steel wire layer (4) to the inner wall of the polyethylene pipe section (1) is greater than the distance from the steel wire layer (4) to the outer wall of the polyethylene pipe section (1), the pipe walls at both ends of the reinforced polyethylene pipe section (1) are respectively provided with joint installation holes (2), the resistance wire joint (3) is placed in the joint installation hole (2), the two ends of the reinforced polyethylene pipe section (1) are provided with resistance wire through holes (6) corresponding to the joint installation holes (2), the resistance wire (5) passes through the resistance wire through holes (6) and is connected to the resistance wire joint (3).

3. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 1, characterized in that The wire embedding tool comprises a heating component, a grooving component and an extrusion component. The grooving component is placed on the heating component. The extrusion component is placed on the heating component. The heating component is installed on a numerically controlled machine tool. The grooving component performs spiral grooving on the reinforced polyethylene pipe section (1) and embeds the resistance wire (5) into the groove. The extrusion component extrude the groove to embed the resistance wire (5). The heating component heats the grooving component so that when the grooving component performs spiral grooving, the polyethylene pipe walls on both sides of the groove soften, making it easier for the resistance wire (5) to be embedded into the groove. At the same time, the extrusion component presses the groove to embed the resistance wire (5). The softened polyethylene tube walls on both sides of the groove enable the resistance wire (5) to be more tightly melted together to bury the resistance wire (5), thereby preventing the resistance wire (5) from falling out of the cut groove and improving the stability of the resistance wire (5) being buried; the heating component is composed of a hollow heating column (7), a hollow support column (8), a cutter mounting groove (9), a first wire guide roller (14), a second wire guide roller (15), a heating coil (18) and a heat conducting rod (19), one end of the hollow support column (8) is placed on one end of the hollow heating column (7), the hollow support column (8) and the hollow heating column (7) are connected, and the hollow support column ( 8) a cutting knife installation groove (9) is opened at the other end, the cutting knife installation groove (9) is connected to the hollow support column (8), the heating coil (18) is placed in the hollow heating column (7) and connected to the inner wall of the hollow heating column (7), the heat conducting rod (19) is placed in the hollow heating column (7), the first wire guide roller (14) is rotatably placed on the side wall of the other end of the hollow support column (8), the second wire guide roller (15) is rotatably placed on the side wall of one end of the hollow heating column (7), the other end of the hollow heating column (8) is opened with a connecting groove (17), the groove wall of the connecting groove (17) is opened with a key groove, the The hollow heating column (7) is connected to the machine tool feed shaft (16) through a connecting groove (17) and a key groove. The cutting groove assembly consists of a cutting knife (10), a resistance wire pressing hole (11) and a resistance wire clamping groove (20). The cutting knife (10) is detachably placed in the cutting knife installation groove (9). The cutting knife (10) has a resistance wire pressing hole (11) on its blade surface, and a resistance wire clamping groove (20) on its side. The extrusion assembly consists of an extrusion roller (12) and a roller bracket (13). The extrusion roller (12) is rotatably placed on the other end of the hollow support column (8) through the roller bracket (13).

4. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 3, characterized in that The surface of the hollow heating column (7) is coated with a heat-insulating material, and the wall thickness of one end of the hollow heating column (7) is smaller than the wall thickness of the other end.

5. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 3, characterized in that The surface of the hollow support column (8) is coated with a heat-insulating material. The hollow support column (8) first extends horizontally for a distance from one end to the other end, and then bends and extends obliquely to the other end.

6. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 3, characterized in that The heat conducting rod (19) is located inside the heating coil (18), one end of the heat conducting rod (19) is placed on the inner wall of the other end of the hollow heating column (7), and the other end of the heat conducting rod (19) extends along the center line of the hollow heating column (7) and the hollow support column (8) to the other end of the hollow support column (8).

7. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 3, characterized in that The cutting knife (10) is in contact with the heat conducting rod (19).

8. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 3, characterized in that The squeezing roller (12) is located on one side of the cutting knife (10), and the lowest point of the squeezing roller (12) is higher than the height of the tip of the cutting knife (10).

9. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 3, characterized in that The design of the first wire guide roller (14) and the second wire guide roller (15) working together to guide the resistance wire (5) can reduce the movement resistance of the resistance wire (5), and prevent the resistance wire (5) from being subjected to excessive pulling force during the process of being embedded in the groove and being separated from the groove, thereby affecting the embedding quality.

10. A method for processing reinforced polyethylene electric fusion pipe fittings according to claim 3, characterized in that The resistance wire pressing hole (11) cooperates with the resistance wire clamping slot (20) to limit the resistance wire (5), so that the resistance wire (5) can bypass the cutting knife (10) and be placed under the cutting knife (10), thereby reducing the risk of the resistance wire (5) falling off or deviating, and improving the stability of the embedded resistance wire (5).

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