Pipe extruder for producing PE water pipe

Abstract

The invention provides a pipe extruder for producing a PE water pipe, and relates to the technical field of pipe manufacturing, the pipe extruder comprises a crushing mechanism, the crushing mechanism comprises a crushing barrel, and a placement rack is arranged on the outer surface of one end of the crushing barrel. According to the invention, through the use of the crushing mechanism, a worker can directly pour an original material into the crushing barrel for crushing, and no additional crushing step is needed. The crushing engine is started to drive the spiral crushing paddle to rotate, so that the material is effectively crushed into small particles. Therefore, time and labor cost are saved, and production efficiency is improved. And due to the application of the hot-melt extrusion mechanism, the material can enter the casting mold mechanism for shaping after being subjected to hot-melt extrusion. And through operation of the rotating rod motor and the transmission belt, the extrusion plate is pushed to move and extrude, so that the material forms a required pipe shape. The hot-melt extrusion process can effectively maintain the uniformity and stability of the material, so that the quality and consistency of the pipe are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe manufacturing, and particularly relates to a pipe extruder for producing PE water pipes. Background Art

[0002] A pipe extruder is a device for manufacturing plastic pipes. It feeds molten and plasticized plastic materials from the feed inlet of the extruder, and through a series of process steps, such as heating, melting, extrusion, and shaping, finally extrudes the plastic materials into pipes with the required shape and size. However, the existing pipe extruders generally adopt separate steps of crushing and hot melt extrusion when extruding pipes. In this way, when the pipe extruder performs hot melt extrusion on the pipes, the staff needs to first take the materials to the crusher for crushing to avoid the problem that the materials are too large to be hot melted. After crushing, the staff needs to transfer the crushed materials to the hot melt extruder for hot melt extrusion. In this way, the participation of the staff in the pipe extrusion process will reduce the pipe extrusion efficiency, thus reducing its practicality in the actual use process. Therefore, we provide a pipe extruder for producing PE water pipes. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies existing in the prior art and improve the working efficiency of the pipe extruder.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: It includes a crushing mechanism. The crushing mechanism includes a crushing barrel. A placement rack is arranged on the outer surface of one end of the crushing barrel. A driving fixed rack is arranged at the end of the crushing barrel far from the placement rack. A crushing motor is arranged on one side of the driving fixed rack. One end of the crushing motor is provided with a spiral crushing paddle. One end of the crushing barrel is provided with a docking pipe. A material pumping machine is arranged at the end of the docking pipe far from the crushing barrel. A material control valve is arranged on one side of the material pumping machine. A material conveying pipe is arranged at the end of the material control valve far from the material pumping machine. A hot melt extrusion mechanism is arranged at the end of the material conveying pipe far from the material pumping machine. The hot melt extrusion mechanism includes a hot melt extrusion chamber. An inlet docking port is arranged on one side of the hot melt extrusion chamber. An extrusion plate is arranged in the hot melt extrusion chamber. A threaded rotating rod is arranged on the extrusion plate. A bearing is arranged on the outer surface of one end of the threaded rotating rod. One end of the threaded rotating rod is provided with a transmission belt. A rotating rod motor is arranged at the end of the transmission belt far from the threaded rotating rod. A casting mechanism is arranged at the end of the hot melt extrusion chamber far from the transmission belt. A cooling mechanism is arranged on the outer surface of the casting mechanism.

[0005] As a preferred embodiment, the outer surface of one end of the crushing barrel is fixed on the placement rack by nesting. One side of the starting fixing rack is fixedly connected to the outer surface of the end of the crushing barrel away from the placement rack. Both ends of the crushing engine are fixedly connected to one side of the two starting fixing racks. One end of the docking pipe is fixedly connected to the end of the crushing barrel away from the starting fixing rack. The end of the docking pipe away from the crushing barrel is docked on the material pumping machine. One end of the material control valve is fixedly connected to one side of the material pumping machine. One end of the material conveying pipe is docked on the end of the material control valve away from the material pumping machine.

[0006] As a preferred embodiment, the end of the material conveying pipe away from the material control valve is docked on the feeding docking port on one side of the hot melt extrusion bin. The extrusion plate is limited to move and extrude in the hot melt extrusion bin. The threaded rotating rod is limited to rotate and adjust in the hot melt extrusion bin. The outer surface of the bearing is fixedly connected in the hot melt extrusion bin. The inner surface of the bearing is fixedly connected to the outer surface of the threaded rotating rod. One end of the transmission belt is docked on the end of the threaded rotating rod near the bearing. The end of the transmission belt away from the threaded rotating rod is docked on one end of the rotating rod motor.

[0007] As a preferred embodiment, the casting mechanism includes an adjusting motor. One side of the adjusting motor is provided with a fixed bottom shell. One end of the adjusting motor is provided with a docking screw rod. The outer surface of the docking screw rod is provided with a fixing plate. One end of the fixing plate is provided with a fixed barrel. One end of the fixed barrel is provided with an adjusting barrel. One side of the adjusting barrel is provided with an adjusting support plate. A balance adjusting rod is arranged on the adjusting support plate and the fixing plate. A spring is arranged between the adjusting support plate and the fixing plate. An anti-slanting rod is arranged in the fixed bottom shell. Support rods are arranged on both sides of the fixed bottom shell.

[0008] As a preferred embodiment, one side of the adjusting motor is fixed on the fixed bottom shell. One end of the docking screw rod is docked on one end of the adjusting motor for rotation. The outer surface of the docking screw rod contacts and rotates with the adjusting support plate. One end of the fixing plate is fixedly connected to the fixed bottom shell. The end of the fixing plate away from the fixed bottom shell is fixedly connected to the outer surface of the adjusting barrel. The inner surface of the adjusting barrel contacts the outer surface of the fixed barrel. One end of the fixing plate is fixedly connected to the outer surface of the fixed barrel.

[0009] As a preferred embodiment, one end of the fixing plate is fixedly connected in the fixed bottom shell. Both ends of the balance adjusting rod are fixedly connected to the fixing plate. One end of the spring is fixedly connected to one side of the adjusting support plate. The end of the spring away from the adjusting support plate is fixedly connected to the fixing plate. Both ends of the anti-slanting rod are fixedly connected in the fixed bottom shell. One end of the support rod is fixedly connected to the fixed bottom shell.

[0010] As a preferred embodiment, the cooling mechanism includes a water pump, an infusion tube is provided on one side of the water pump, a cooling water reservoir is provided at one end of the infusion tube, a discharge tube is provided at one end of the water pump, an infusion transverse tube is provided at one end of the discharge tube, a connecting tube is provided between the two infusion transverse tubes, a protective shell is provided on one side of the infusion transverse tube, and a nozzle is provided in the protective shell.

[0011] As a preferred embodiment, one end of the infusion tube is docked at one side of the water pump, the end of the infusion tube away from the water pump is docked at one side of the cooling water reservoir, one end of the discharge tube is docked at one end of the water pump, the end of the discharge tube away from the water pump is docked at one end of the infusion transverse tube, the connecting tube is docked between the two infusion transverse tubes, both ends of the protective sleeve are fixedly connected to one side of the infusion transverse tube, and one end of the nozzle is fixedly connected in the protective sleeve.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are: 1. In the present invention, through the use of the crushing mechanism, the staff can directly pour the raw material into the crushing barrel for crushing without the need for additional crushing steps. The start-up of the crushing engine can drive the spiral crushing paddle to rotate, effectively crushing the material into small particles. In this way, time and labor costs are saved and production efficiency is improved. The application of the hot melt extrusion mechanism allows the material to enter the casting mechanism for shaping after hot melt extrusion. Through the operation of the rotating rod motor and the transmission belt, the extrusion plate is pushed to move and extrude, so that the material can be formed into the desired pipe shape. This hot melt extrusion process can effectively maintain the uniformity and stability of the material, thereby improving the quality and consistency of the pipe.

[0013] 2. In the present invention, by conveying the hot melt material to the fixed barrel for hot melt fixing, the pipe can maintain a stable shape under the action of the fixed barrel. This ensures the accuracy and consistency of the pipe. Moreover, the design of the fixed barrel enables the pipe to be evenly hot-melted and heated, avoiding quality problems caused by thermal runaway or uneven heating. By adjusting the start of the motor, the docking screw can control the position of the adjusting barrel so that it is nested with the fixed barrel. This nesting design can effectively promote the heat dissipation and cooling process of the pipe. During the cyclic cooling and shaping process of the adjusting barrel and the fixed barrel, the pipe can fully contact the ambient air, quickly cool down and maintain a stable shape. This can improve the cooling efficiency of the pipe and shorten the production cycle.

[0014] 3. In the present invention, the water pump is controlled by a controller to pump the cooling water in the cooling reservoir into the horizontal infusion pipe and spray it into the two horizontal infusion pipes through the connecting pipe. In this way, the coolant can evenly cover the surface of the pipe, effectively improving the cooling efficiency of the pipe. Through physical cooling, the temperature of the pipe drops rapidly, thus accelerating the shaping speed. The cooling water is sprayed on the pipe through the nozzles in the protective housing, further increasing the contact area between the surface area of the pipe and the cooling medium. This method can dissipate heat more effectively, reduce the temperature of the pipe to the required shaping temperature, and thus improve the shaping speed and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a perspective view of a pipe extruder for producing PE water pipes according to the present invention; Figure 2 FIG. is a perspective view of a crushing mechanism of a pipe extruder for producing PE water pipes according to the present invention; Figure 3 FIG. is an exploded perspective view of a crushing mechanism of a pipe extruder for producing PE water pipes according to the present invention; Figure 4 FIG. is a perspective view of a hot melt extrusion mechanism of a pipe extruder for producing PE water pipes according to the present invention; Figure 5 FIG. is a perspective view of a casting mechanism of a pipe extruder for producing PE water pipes according to the present invention; Figure 6 FIG. is a side perspective view of a casting mechanism of a pipe extruder for producing PE water pipes according to the present invention; Figure 7 FIG. is a perspective view of a cooling mechanism of a pipe extruder for producing PE water pipes according to the present invention.

[0016] LEGEND DESCRIPTION: 1. Crushing mechanism; 11. Crushing barrel; 12. Placing rack; 13. Starting fixed rack; 14. Crushing engine; 15. Feeding pump; 16. Material control valve; 17. Feeding pipe; 18. Spiral crushing paddle; 19. Docking pipe; 2. Hot melt extrusion mechanism; 21. Hot melt extrusion chamber; 22. Inlet docking port; 23. Threaded rotating rod; 24. Bearing; 25. Transmission belt; 26. Rotating rod motor; 27. Extrusion plate; 3. Casting mechanism; 31. Adjusting motor; 32. Fixed bottom shell; 33. Docking screw; 34. Fixed plate; 35. Fixed barrel; 36. Adjusting barrel; 37. Adjusting support plate; 38. Balancing adjusting rod; 39. Spring; 310. Anti - tilt rod; 311. Support rod; 4. Cooling mechanism; 41. Water pump; 42. Liquid delivery pipe; 43. Cooling reservoir; 44. Drain pipe; 45. Horizontal liquid delivery pipe; 46. Connecting pipe; 47. Protective housing; 48. Sprinkler head. Detailed implementation manner

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1

[0019] As Figure 1-4As shown in the figure, the present invention provides a technical solution: a pipe extruder for producing PE water pipes, including a crushing mechanism 1. The crushing mechanism 1 includes a crushing barrel 11. A placement rack 12 is provided on the outer surface of one end of the crushing barrel 11. The outer surface of one end of the crushing barrel 11 is fixed on the placement rack 12 by nesting. One end of the crushing barrel 11 away from the placement rack 12 is provided with a driving fixed frame 13. One side of the driving fixed frame 13 is fixedly connected to the outer surface of the end of the crushing barrel 11 away from the placement rack 12. A crushing engine 14 is provided on one side of the driving fixed frame 13. Both ends of the crushing engine 14 are fixedly connected to one side of the two driving fixed frames 13. One end of the crushing engine 14 is provided with a spiral crushing paddle 18. One end of the crushing barrel 11 is provided with a docking pipe 19. One end of the docking pipe 19 is fixedly connected to the end of the crushing barrel 11 away from the driving fixed frame 13. The end of the docking pipe 19 away from the crushing barrel 11 is docked on a material pumping machine 15. A material pumping machine 15 is provided at the end of the docking pipe 19 away from the crushing barrel 11. A material control valve 16 is provided on one side of the material pumping machine 15. One end of the material control valve 16 is fixedly connected to one side of the material pumping machine 15. The end of the material control valve 16 away from the material pumping machine 15 is provided with a material conveying pipe 17. One end of the material conveying pipe 17 is docked at the end of the material control valve 16 away from the material pumping machine 15. A hot melt extrusion mechanism 2 is provided at the end of the material conveying pipe 17 away from the material pumping machine 15. The hot melt extrusion mechanism 2 includes a hot melt extrusion chamber 21. A material inlet docking port 22 is provided on one side of the hot melt extrusion chamber 21. The end of the material conveying pipe 17 away from the material control valve 16 is docked at the material inlet docking port 22 on one side of the hot melt extrusion chamber 21. An extrusion plate 27 is provided in the hot melt extrusion chamber 21. The extrusion plate 27 is limited to move and extrude in the hot melt extrusion chamber 21. A threaded rotating rod 23 is provided on the extrusion plate 27. The threaded rotating rod 23 is limited to rotate and adjust in the hot melt extrusion chamber 21. A bearing 24 is provided on the outer surface of one end of the threaded rotating rod 23. The outer surface of the bearing 24 is fixedly connected in the hot melt extrusion chamber 21. The inner surface of the bearing 24 is fixedly connected to the outer surface of the threaded rotating rod 23. One end of the threaded rotating rod 23 is provided with a transmission belt 25. One end of the transmission belt 25 is docked at the end of the threaded rotating rod 23 near the bearing 24. The end of the transmission belt 25 away from the threaded rotating rod 23 is provided with a rotating rod motor 26. The end of the transmission belt 25 away from the threaded rotating rod 23 is docked at one end of the rotating rod motor 26. A casting mechanism 3 is provided at the end of the hot melt extrusion chamber 21 away from the transmission belt 25. A cooling mechanism 4 is provided on the outer surface of the casting mechanism 3.

[0020] In this embodiment, when the staff uses this pipe extruder to manufacture pipes, first, the raw materials are poured into the crushing barrel 11 for crushing. Before pouring into the crushing barrel 11, the staff needs to start the crushing engine 14 through the controller, so that the crushing engine 14 can drive the spiral crushing paddle 18 to rotate, so that the spiral crushing paddle 18 can crush the materials. The crushed materials enter the pumping machine 15 through the docking pipe 19, and then the material control valve 16 is used to control the discharge amount, and then the materials are transported to the hot melt extrusion mechanism 2 through the material conveying pipe 17 for hot melt extrusion. In this way, the staff does not need an additional crushing step, which improves the practicality of this pipe extruder during actual use.

[0021] Embodiment 2

[0022] As Figure 1-6 shown, the casting mechanism 3 includes an adjusting motor 31. One side of the adjusting motor 31 is provided with a fixed bottom shell 32, and one side of the adjusting motor 31 is fixed on the fixed bottom shell 32. One end of the adjusting motor 31 is provided with a docking screw 33. One end of the docking screw 33 is docked at one end of the adjusting motor 31 for rotation. The outer surface of the docking screw 33 is provided with a fixing plate 34. One end of the fixing plate 34 is fixedly connected to the fixed bottom shell 32. One end of the fixing plate 34 is fixedly connected in the fixed bottom shell 32. One end of the fixing plate 34 is provided with a fixed barrel 35. One end of the fixing plate 34 is fixedly connected to the outer surface of the fixed barrel 35. One end of the fixed barrel 35 is provided with an adjusting barrel 36. One end of the fixing plate 34 away from the fixed bottom shell 32 is fixedly connected to the outer surface of the adjusting barrel 36. The inner surface of the adjusting barrel 36 is in contact with the outer surface of the fixed barrel 35. One side of the adjusting barrel 36 is provided with an adjusting support plate 37. The outer surface of the docking screw 33 is in contact with and rotates on the adjusting support plate 37. A balance adjusting rod 38 is arranged on the adjusting support plate 37 and the fixing plate 34. Both ends of the balance adjusting rod 38 are fixedly connected to the fixing plate 34. A spring 39 is arranged between the adjusting support plate 37 and the fixing plate 34. One end of the spring 39 is fixedly connected to one side of the adjusting support plate 37, and the end of the spring 39 away from the adjusting support plate 37 is fixedly connected to the fixing plate 34. An anti-tilting rod 310 is arranged in the fixed bottom shell 32. Both ends of the anti-tilting rod 310 are fixedly connected in the fixed bottom shell 32. Support rods 311 are arranged on both sides of the fixed bottom shell 32. One end of the support rod 311 is fixedly connected to the fixed bottom shell 32.

[0023] In this embodiment, when the staff uses the pipe extruder to extrude the pipe, the material is extruded through the hot melt extrusion mechanism 2 and then the pipe is molded through the casting mechanism 3. When the staff is molding, the pipe is fixed by hot melt by conveying the hot melt material to the fixed barrel 35. After the fixing is completed, the pipe is circulated and cooled and molded through the adjustment barrel 36 and the fixed barrel 35. The staff can control the start of the adjustment motor 31 through the controller, so that the adjustment motor 31 drives the docking screw 33 to rotate and adjust, so that the adjustment support plate 37 can be adjusted and moved under the action of the docking screw 33, and then the adjustment barrel 36 can be nested with the fixed barrel 35, so that the pipe can be cooled and dissipated, which improves the work efficiency during the pipe extrusion process, thereby further improving the practicality of the pipe extruder in actual use.

[0024] Example 3

[0025] like Figure 1-7 As shown, the cooling mechanism 4 includes a water pump 41, a liquid infusion tube 42 is provided on one side of the water pump 41, one end of the liquid infusion tube 42 is connected to one side of the water pump 41, a cooling water reservoir 43 is provided on one end of the liquid infusion tube 42, one end of the liquid infusion tube 42 away from the water pump 41 is connected to one side of the cooling water reservoir 43, a drainage tube 44 is provided on one end of the water pump 41, one end of the drainage tube 44 is connected to one end of the water pump 41, and one end of the drainage tube 44 is provided with a liquid infusion tube 43. A horizontal tube 45, one end of the drainage tube 44 away from the water pump 41 is connected to one end of the infusion horizontal tube 45, a connecting tube 46 is provided between the two infusion horizontal tubes 45, and the connecting tube 46 is connected between the two infusion horizontal tubes 45. A protective shell 47 is provided on one side of the infusion horizontal tube 45, and both ends of the protective shell 47 are fixedly connected to one side of the infusion horizontal tube 45. A nozzle 48 is provided in the protective shell 47, and one end of the nozzle 48 is fixedly connected to the protective shell 47.

[0026] In this embodiment, when the staff uses the present pipe extruder to extrude and shape the pipe, a cooling mechanism 4 is arranged on the outer surface of the casting mechanism 3, so that when the adjusting barrel 36 and the fixed barrel 35 are nested, the staff can control the water pump 41 through the controller, so that the water pump 41 can transport the cooling water in the cooling water reservoir 43 to the infusion cross pipe 45 through the discharge pipe 44, and infuse the cooling liquid into the two infusion cross pipes 45 through the connecting pipe 46, and finally spray the cooling water through the nozzle 48 in the protective shell 47, so as to physically cool the pipe and increase the shaping speed, thereby further improving the practicality of the present pipe extruder in actual use.

[0027] Working principle: like Figure 1-7As shown in the figure, first, pour the raw materials into the crushing barrel 11 for crushing. Before starting the crushing engine 14, the staff controls its start through the controller, driving the spiral crushing paddle 18 to crush the materials. After crushing, the materials enter the pumping machine 15 through the docking pipe 19. Then, the discharge amount is adjusted through the material control valve 16, and the materials are transported to the hot melt extrusion mechanism 2. In the hot melt extrusion mechanism 2, the materials drive the conveyor belt 25 to rotate through the rotating rod motor 26, pushing the extrusion plate 27 to move and extrude. After extrusion, the materials enter the casting mechanism 3 for shaping. The staff transports the hot melt materials to the fixed barrel 35 for hot melting and fixing, and then performs cyclic cooling and shaping through the adjusting barrel 36 and the fixed barrel 35. Starting the adjusting motor 31 can control the movement of the adjusting support plate 37, nesting the adjusting barrel 36 in the fixed barrel 35. The staff can also control the water pump 41 through the controller, transporting the cooling water from the cooling reservoir 43 to the liquid infusion cross pipe 45, instilling the coolant into the two liquid infusion cross pipes 45 through the connecting pipe 46, and finally spraying the cooling water through the nozzle 48 to physically cool the pipe and improve the shaping speed. The above operations further improve the practicability of this pipe extruder.

[0028] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A pipe extruder for producing PE water pipes, comprising a crushing mechanism (1), characterized in that: The crushing mechanism (1) includes a crushing barrel (11). A placement rack (12) is provided on the outer surface of one end of the crushing barrel (11). A driving fixed rack (13) is provided at the end of the crushing barrel (11) away from the placement rack (12). A crushing engine (14) is provided on one side of the driving fixed rack (13). One end of the crushing engine (14) is provided with a spiral crushing paddle (18). One end of the crushing barrel (11) is provided with a docking pipe (19). A material pumping machine (15) is provided at the end of the docking pipe (19) away from the crushing barrel (11). A material control valve (16) is provided on one side of the material pumping machine (15). A material conveying pipe (17) is provided at the end of the material control valve (16) away from the material pumping machine (15). A hot melt extrusion mechanism (2) is provided at the end of the material conveying pipe (17) away from the material pumping machine (15). The hot melt extrusion mechanism (2) includes a hot melt extrusion chamber (21). A feeding docking port (22) is provided on one side of the hot melt extrusion chamber (21). An extrusion plate (27) is provided in the hot melt extrusion chamber (21). A threaded rotating rod (23) is provided on the extrusion plate (27). A bearing (24) is provided on the outer surface of one end of the threaded rotating rod (23). One end of the threaded rotating rod (23) is provided with a transmission belt (25). A rotating rod motor (26) is provided at the end of the transmission belt (25) away from the threaded rotating rod (23). A casting mechanism (3) is provided at the end of the hot melt extrusion chamber (21) away from the transmission belt (25). A cooling mechanism (4) is provided on the outer surface of the casting mechanism (3).

2. The pipe extruder for producing PE pipes according to claim 1, characterized in that: One end of the outer surface of the crushing barrel (11) is fixed on the placement rack (12) by a nesting method. One side of the driving fixed rack (13) is fixedly connected to the outer surface of the end of the crushing barrel (11) away from the placement rack (12). Both ends of the crushing engine (14) are fixedly connected to one side of the two driving fixed racks (13). One end of the docking pipe (19) is fixedly connected to the end of the crushing barrel (11) away from the driving fixed rack (13). The end of the docking pipe (19) away from the crushing barrel (11) is docked on the material pumping machine (15). One end of the material control valve (16) is fixedly connected to one side of the material pumping machine (15). One end of the material conveying pipe (17) is docked at the end of the material control valve (16) away from the material pumping machine (15).

3. The pipe extruder for producing PE pipes according to claim 1, characterized in that: One end of the material conveying pipe (17) far from the material control valve (16) is butted against the material inlet butting interface (22) on one side of the hot melt extrusion bin (21). The extrusion plate (27) is limited to move and extrude in the hot melt extrusion bin (21). The threaded rotating rod (23) is limited to rotate and adjust in the hot melt extrusion bin (21). The outer surface of the bearing (24) is fixedly connected in the hot melt extrusion bin (21). The inner surface of the bearing (24) is fixedly connected to the outer surface of the threaded rotating rod (23). One end of the transmission belt (25) is butted against one end of the threaded rotating rod (23) adjacent to the bearing (24). The end of the transmission belt (25) far from the threaded rotating rod (23) is butted against one end of the rotating rod motor (26).

4. A pipe extruder for producing PE pipes according to claim 1, characterized in that: The casting mechanism (3) includes an adjusting motor (31). One side of the adjusting motor (31) is provided with a fixed bottom shell (32). One end of the adjusting motor (31) is provided with a butting screw rod (33). The outer surface of the butting screw rod (33) is provided with a fixing plate (34). One end of the fixing plate (34) is provided with a fixed barrel (35). One end of the fixed barrel (35) is provided with an adjusting barrel (36). One side of the adjusting barrel (36) is provided with an adjusting support plate (37). A balance adjusting rod (38) is arranged on the adjusting support plate (37) and the fixing plate (34). A spring (39) is arranged between the adjusting support plate (37) and the fixing plate (34). An anti - skew rod (310) is arranged in the fixed bottom shell (32). Support rods (311) are arranged on both sides of the fixed bottom shell (32).

5. A pipe extruder for producing PE pipes according to claim 4, characterized in that: One side of the adjusting motor (31) is fixed on the fixed bottom shell (32). One end of the butting screw rod (33) is butted against one end of the adjusting motor (31) to rotate. The outer surface of the butting screw rod (33) contacts and rotates with the adjusting support plate (37). One end of the fixing plate (34) is fixedly connected to the fixed bottom shell (32). One end of the fixing plate (34) far from the fixed bottom shell (32) is fixedly connected to the outer surface of the adjusting barrel (36). The inner surface of the adjusting barrel (36) contacts the outer surface of the fixed barrel (35). One end of the fixing plate (34) is fixedly connected to the outer surface of the fixed barrel (35).

6. The pipe extruder for producing PE pipes according to claim 5, wherein: One end of the fixing plate (34) is fixedly connected in the fixed bottom shell (32). Both ends of the balance adjusting rod (38) are fixedly connected to the fixing plate (34). One end of the spring (39) is fixedly connected to one side of the adjusting support plate (37). The end of the spring (39) far from the adjusting support plate (37) is fixedly connected to the fixing plate (34). Both ends of the anti - skew rod (310) are fixedly connected in the fixed bottom shell (32). One end of the support rod (311) is fixedly connected to the fixed bottom shell (32).

7. A pipe extruder for producing PE pipes according to claim 1, characterized in that: The cooling mechanism (4) includes a water pump (41). One side of the water pump (41) is provided with an infusion pipe (42). One end of the infusion pipe (42) is provided with a cooling water reservoir (43). One end of the water pump (41) is provided with a liquid discharge pipe (44). One end of the liquid discharge pipe (44) is provided with a transverse infusion pipe (45). A connecting pipe (46) is arranged between the two transverse infusion pipes (45). One side of the transverse infusion pipe (45) is provided with a protective housing (47). A spray head (48) is arranged in the protective housing (47).

8. A pipe extruder for producing PE pipes according to claim 7, characterized in that: One end of the infusion pipe (42) is butted against one side of the water pump (41). The end of the infusion pipe (42) far from the water pump (41) is butted against one side of the cooling water reservoir (43). One end of the liquid discharge pipe (44) is butted against one end of the water pump (41). The end of the liquid discharge pipe (44) far from the water pump (41) is butted against one end of the transverse infusion pipe (45). The connecting pipe (46) is butted between the two transverse infusion pipes (45). Both ends of the protective housing (47) are fixedly connected to one side of the transverse infusion pipe (45). One end of the spray head (48) is fixedly connected in the protective housing (47).

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