Multi-edge corrugated pipe production method

Abstract

The invention discloses a multi-edge corrugated pipe production method, and relates to the field of corrugated pipes, the multi-edge corrugated pipe production method comprises a working table, two conveyors are installed at the top end of the working table, a plurality of molds are installed on conveying belts of the conveyors, a center column is fixedly arranged at the top end of the working table, and a sleeve is arranged at the outer end of the center column in a sleeving mode; and a spring is fixedly arranged at the other end of the sleeve. The casing pipe is arranged at the outer end of the central column, in the production process, raw materials cover the outer end of the casing pipe and generate friction with the casing pipe, friction force drives the casing pipe and enables the electrode plates to slide at the outer ends of the resistor strips, the electrode plates and the resistor strips are connected into a circuit, the contact positions of the electrode plates and the resistor strips are different, and the resistance values of the resistor strips in the circuit are different. The friction force of the raw material to the sleeve in the moving process can be intuitively monitored by measuring the resistance value, so that the influence on the production of the multi-edge corrugated pipe due to overlarge friction force is avoided.

Description

Technical Field

[0001] This invention relates to the field of corrugated pipes, specifically a method for producing multi-faceted corrugated pipes. Background Technology

[0002] A corrugated pipe is a special type of pipe with a corrugated surface. Common corrugated pipes are divided into single-wall corrugated pipes and double-wall corrugated pipes. Single-wall corrugated pipes have corrugations on both the inner and outer walls, while double-wall corrugated pipes are generally made of two types of pipes stacked together. The outer wall has corrugations, but the inner wall is smooth.

[0003] The common corrugated pipe cross-section is generally circular, but to meet special needs, the protrusions on some corrugated pipes are also set as polygons, so that the surface of the corrugated pipe has multiple raised ridges. This type of corrugated pipe is also called a polygonal pipe.

[0004] Corrugated pipes are generally made of materials such as rubber and plastic. These raw materials are heated and melted, then extruded into a mold, and after cooling and solidification, they can be formed, such as the corrugated pipe extrusion molding equipment disclosed in CN217729585U.

[0005] The corrugated pipe mold has a central rod in the center. The raw material is wrapped around the outer end of the central rod to form a pipe. During the processing, the raw material and the formed corrugated pipe need to slide on the outer end of the central rod to carry out continuous processing. As a result, the raw material and the corrugated pipe will rub against the surface of the central rod. If the friction is too great, it will directly lead to the failure of corrugated pipe processing. However, the current technology cannot directly detect the magnitude of this friction. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a method for producing multi-faceted corrugated pipes. By installing a sleeve at the outer end of a central column, during production, the raw material covers the outer end of the sleeve and rubs against it. This friction drives the sleeve, causing an electrode plate to slide at the outer end of a resistance strip. The electrode plate and resistance strip are connected to a circuit; the resistance value of the resistance strip varies depending on their contact position. By measuring the resistance value, the magnitude of the frictional force exerted by the raw material on the sleeve during movement can be directly monitored, thus preventing excessive friction from affecting the production of the multi-faceted corrugated pipe. This effectively solves the problems in the prior art.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a method for producing multi-faceted corrugated pipes, comprising the following steps: S1: Connect two injection pipes to the extrusion port of the extruder to deliver two kinds of raw materials respectively. The two raw materials form the outer wall and inner wall of the corrugated pipe respectively. The outer wall material enters the gap between the outer pipe and the inner pipe, and the inner wall material enters the gap between the sleeve and the inner pipe. As the raw materials are continuously injected, the inner wall material is first squeezed out through the open end of the inner pipe and covers the outer end of the sleeve. When it moves to the open end of the outer pipe, the outer wall material is also squeezed out and covers the outer end of the inner wall material. S2: The molds on the two conveyors interlock as the conveyors move, and the raw material extruded from the outer end of the sleeve is filled into the cavity after the molds are interlocked, thus forming the corrugated pipe. The moving speed of the molds is consistent with the moving speed of the raw material at the outer end of the sleeve. S3: The raw material moves at the outer end of the sleeve, while the position of the sleeve remains fixed. Therefore, friction is generated between the raw material and the sleeve. Under the action of friction, the sleeve is driven by the movement of the raw material, causing the sleeve to slide relative to the central column at the outer end of the central column. The movement of the sleeve pulls the spring, causing the spring to be stretched, and the electrode plate on the inner wall of the sleeve also slides at the outer end of the resistor strip. S4: After the raw material is formed at the mold, it passes between the two second cooling components. Cooling water is then introduced into the main pipe through the water guide pipe. The cooling water inside the main pipe enters the branch pipe and is finally sprayed out through the atomizing nozzle. The sprayed water comes into contact with the formed raw material, so that the outer surface of the raw material is initially solidified and formed into a multi-faceted corrugated pipe. S5: After initial shaping, the corrugated pipe enters the circular hole between the base and the cover plate through the second cooling component. The sponge pad on the inner wall of the circular hole contacts the protrusion at the outer end of the corrugated pipe and is squeezed by the protrusion. At the same time, the hose injects cooling water into the cavity. The cooling water in the cavity is absorbed into the sponge pad through the water permeable hole. When the sponge pad is squeezed by the protrusion of the corrugated pipe, the cooling water will flow out and contact the protrusion of the corrugated pipe, and then flow to the concave part of the corrugated pipe. This further cools and shapes the initially shaped multi-faceted corrugated pipe. After cooling is completed, the processing is finished.

[0008] Furthermore, the above-mentioned method for producing multi-faceted corrugated pipes requires the use of a multi-faceted corrugated pipe production device, including a workbench. Two conveyors are installed on the top of the workbench, and multiple molds are installed on the conveyor belts of the conveyors. When the molds on the two conveyors move to the gap between the two conveyors, they can interlock with each other. The two interlocked molds can extrude the raw material into a multi-faceted corrugated pipe shape.

[0009] Furthermore, a central column is fixedly provided at the top of the workbench. One end of the central column passes through the mold between the two conveyors and extends to the other side of the conveyor. A fixing plate is fixedly provided at the other end of the central column. The fixing plate is fixedly provided at the top of the workbench. The outer end of the central column is fitted with a sleeve, and one end of the sleeve is bolted to an end plate, which has a vent hole for ventilation.

[0010] Furthermore, a spring is fixedly provided at the other end of the sleeve, the spring is located at the outer end of the central column, and one end of the spring is fixedly connected to the fixing plate; An electrode plate is embedded in the inner wall of the sleeve, and a resistance strip is embedded in the outer end of the central column. The electrode plate and the outer end of the resistance strip are in contact. When the electrode plate and the resistance strip are connected to the circuit, the resistance value of the resistance strip in the circuit will be different depending on the position of their contact.

[0011] Furthermore, an outer tube is fitted onto the outer end of the sleeve, the outer tube is located between the fixed plate and the conveyor, and an inner tube is fitted onto the outer end of the sleeve, the inner tube is located inside the outer tube and one end of the inner tube is fixedly connected to the inner wall of the outer tube. Two injection tubes connected to the extruder are fixedly provided at the outer end of the outer tube. One of the injection tubes extends into the inner tube and is connected to the inner tube. A sealing ring is fixedly provided on the outer tube, and the inner side of the sealing ring is in contact with the outer end of the sleeve. The bottom end of the outer tube is provided with a pad, and the top end of the outer tube is provided with an arc-shaped pressure plate. The arc-shaped pressure plate is connected to the pad by bolts to clamp and fix the outer tube. The pad is fixedly installed on the top of the workbench.

[0012] Furthermore, the top of the workbench is provided with two second cooling components, which are located on the other side of the conveyor, and one end of the central column and sleeve extends between the two second cooling components; The second cooling assembly includes a main pipe, with vertical plates fixedly installed at both ends of the main pipe. The bottom end of the vertical plate is fixedly connected to the workbench, and a water guide pipe is fixedly installed on the main pipe. Multiple branch pipes are fixedly installed at the top of the main pipe, and an atomizing nozzle is fixedly installed at one end of each branch pipe to atomize the water and spray it out.

[0013] Furthermore, a first cooling component is installed on the top of the workbench. The first cooling component is located on the side of the second cooling component away from the conveyor. The first cooling component includes a base fixedly installed on the top of the workbench, and an arc-shaped cover plate is installed on the top of the base by bolts. The top of the base has a semi-circular groove, which together with the cover plate forms a circular hole. Two sponge pads are fixed on the inner wall of the circular hole, and the two sponge pads are located on the cover plate and the base, respectively.

[0014] Furthermore, the two sponge pads form a cylinder with an inner diameter smaller than the outer diameter of the corrugated pipe protrusion and larger than the outer diameter of the corrugated pipe recess, so that the corrugated pipe protrusion can fully contact the sponge pad. The base and cover plate are both provided with cavities. The inner wall of the circular hole is provided with multiple water-permeable holes. The water-permeable holes on the cover plate and the base are respectively connected to the two cavities, so that the sponge pad can absorb cooling water. Both the base and the cover plate are fixed with flexible hoses, which are connected to the interior of the two cavities respectively, so as to inject water into the cavities.

[0015] Compared with the prior art, the present invention provides a method for producing multi-faceted corrugated pipes, which has the following beneficial effects: By setting a sleeve at the outer end of the central column, during the production process, the raw material covers the outer end of the sleeve and rubs against the sleeve. The friction force moves the sleeve and causes the electrode plate to slide at the outer end of the resistance strip. When the electrode plate and the resistance strip are connected to the circuit, the resistance value of the resistance strip in the circuit will be different depending on the contact position of the two. By measuring the resistance value, the magnitude of the friction force of the raw material on the sleeve during the movement can be directly monitored, thereby avoiding excessive friction force that would affect the production of the multi-faceted corrugated pipe.

[0016] By setting up a first cooling component, after the corrugated pipe has undergone initial cooling and shaping, the protrusion at the outer end of the corrugated pipe contacts and squeezes the sponge pad, causing the cooling water inside the sponge pad to flow out. The cooling water first contacts the protrusion and then the depression, resulting in different cooling efficiencies at the two locations. This allows for different cooling efficiencies to be used based on the thickness of the corrugated pipe, making the cooling effect of the corrugated pipe more uniform. Attached Figure Description

[0017] Figure 1 This is a perspective view of the multi-faceted corrugated pipe production apparatus of the present invention; Figure 2 This is a perspective view of the multi-faceted corrugated pipe production apparatus of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of section A in the middle; Figure 4 This is a cross-sectional view of the first cooling component of the multi-faceted corrugated pipe production apparatus in this invention; Figure 5 This is a perspective view of the second cooling component of the multi-faceted corrugated pipe production apparatus in this invention; Figure 6 This is a perspective view of the mold for the multi-faceted corrugated pipe production device in this invention; Figure 7 This is a perspective view of the conveyor in the multi-faceted corrugated pipe production device of the present invention; Figure 8 This is a three-dimensional sectional view of the outer and inner tubes of the multi-faceted corrugated pipe production device in this invention; Figure 9 For the present invention Figure 8 Enlarged view of section B in the middle; Figure 10 This is a three-dimensional sectional view of the sleeve of the multi-faceted corrugated pipe production device in this invention.

[0018] In the diagram: 1. Workbench; 2. First cooling assembly; 201. Base; 202. Cover plate; 203. Cavity; 204. Water permeable hole; 205. Sponge pad; 3. Second cooling assembly; 301. Vertical plate; 302. Main pipe; 303. Water guide pipe; 304. Branch pipe; 305. Atomizing nozzle; 4. Conveyor; 5. Outer pipe; 6. Fixing plate; 7. Central column; 8. Spring; 9. Sleeve; 10. Mold; 11. Inner pipe; 12. Injection pipe; 13. Electrode plate; 14. Resistance strip; 15. End plate; 16. Vent hole. Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this invention readily understandable, the invention will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] To address the shortcomings of existing technologies, such as Figure 1-10 As shown, the present invention provides a multi-faceted corrugated pipe production device, including a workbench 1. Two conveyors 4 are installed on the top of the workbench 1. Multiple molds 10 are installed on the conveyor belt of the conveyors 4. When the molds 10 on the two conveyors 4 move to the gap between the two conveyors 4, they can engage with each other. The two molds 10 engaged together can compress the raw material into a multi-faceted corrugated pipe shape.

[0021] A central column 7 is fixedly provided at the top of the workbench 1. One end of the central column 7 passes through the mold 10 between the two conveyors 4 and extends to the other side of the conveyor 4. A fixing plate 6 is fixedly provided at the other end of the central column 7. The fixing plate 6 is fixedly provided at the top of the workbench 1. The outer end of the central column 7 is fitted with a sleeve 9, and one end of the sleeve 9 is bolted to an end plate 15. The end plate 15 is provided with a vent hole 16 for ventilation.

[0022] The extruded material moves at the outer end of the sleeve 9 at the same speed as the mold 10. The material at the outer end of the sleeve 9 is also filled into the cavity after the mold 10 is closed, thus forming the corrugated pipe.

[0023] In order to monitor the magnitude of the frictional force of the raw material on the casing 9 in real time, such as Figure 1 , 2As shown in Figures 3, 8, 9, and 10, a spring 8 is fixedly provided at the other end of the sleeve 9. The spring 8 is located at the outer end of the central column 7, and one end of the spring 8 is fixedly connected to the fixing plate 6. An electrode plate 13 is embedded on the inner wall of the sleeve 9, and a resistor strip 14 is embedded on the outer end of the central column 7. The electrode plate 13 and the outer end of the resistor strip 14 are in contact. When the electrode plate 13 and the resistor strip 14 are connected to the circuit, the resistance value of the resistor strip 14 in the circuit will be different depending on the position of their contact.

[0024] The raw material moves at the outer end of the sleeve 9, while the sleeve 9 remains stationary. Therefore, friction is generated between the raw material and the sleeve 9. Under the action of friction, the sleeve 9 is driven by the movement of the raw material, causing the sleeve 9 to slide relative to the central column 7 at the outer end of the central column 7. The movement of the sleeve 9 pulls the spring 8, causing the spring 8 to be stretched. As a result, the electrode plate 13 on the inner wall of the sleeve 9 also slides at the outer end of the resistor strip 14. When the electrode plate 13 and the resistor strip 14 are connected to the circuit, the resistance value of the resistor strip 14 in the circuit will be different depending on the contact position of the two. By measuring the resistance value, the magnitude of the friction force of the raw material on the sleeve 9 during the movement can be directly monitored, thereby avoiding excessive friction that may affect the production of the multi-faceted corrugated pipe.

[0025] In order to extrude the raw material to the outer end of the sleeve 9, such as Figure 1 , 8 As shown, the outer end of the sleeve 9 is fitted with an outer tube 5, which is located between the fixed plate 6 and the conveyor 4. The outer end of the sleeve 9 is fitted with an inner tube 11, which is located inside the outer tube 5 and one end of the inner tube 11 is fixedly connected to the inner wall of the outer tube 5. Two injection pipes 12 connected to the extruder are fixedly provided at the outer end of the outer tube 5. One of the injection pipes 12 extends into the inner tube 5 and is connected to the inner tube 11. A sealing ring is fixedly provided on the outer tube 5, and the inner side of the sealing ring is in contact with the outer end of the sleeve 9. The bottom end of the outer tube 5 is provided with a pad, and the top end of the outer tube 5 is provided with an arc-shaped pressure plate. The arc-shaped pressure plate is connected to the pad by bolts to clamp and fix the outer tube 5. The pad is fixedly set on the top end of the workbench 1.

[0026] Two injection pipes 12 are connected to the extrusion port of the extruder to deliver two different raw materials. These two raw materials form the outer and inner walls of the corrugated pipe, respectively. The outer wall material enters the gap between the outer pipe 5 and the inner pipe 11, while the inner wall material enters the gap between the sleeve 9 and the inner pipe 11. As the raw materials are continuously injected, the inner wall material is first extruded through the open end of the inner pipe 11 and covers the outer end of the sleeve 9. When it moves to the open end of the outer pipe 5, the outer wall material is also extruded and covers the outer end of the inner wall material. After extrusion molding, the bellows needs to be initially cooled and set, such as... Figure 1 , 5As shown, the top of the workbench 1 is provided with two second cooling components 3, which are located on the other side of the conveyor 4. One end of the central column 7 and the sleeve 9 extends between the two second cooling components 3. The second cooling component 3 includes a main pipe 302, with vertical plates 301 fixedly installed at both ends of the main pipe 302. The bottom end of the vertical plate 301 is fixedly connected to the workbench 1, and a water guide pipe 303 is fixedly installed on the main pipe 302. Multiple branch pipes 304 are fixedly installed at the top of the main pipe 302. One end of each branch pipe 304 is fixedly equipped with an atomizing nozzle 305, which atomizes the water and sprays it out.

[0027] After being formed at 10 points in the mold, the raw material passes between two second cooling components 3. Cooling water is then introduced into the main pipe 302 through the water guide pipe 303. The cooling water entering the main pipe 302 enters the branch pipe 304 and is finally sprayed out through the atomizing nozzle 305. The sprayed water comes into contact with the formed raw material, causing the outer surface of the raw material to initially solidify and form a multi-faceted corrugated pipe.

[0028] To ensure more uniform and complete cooling and solidification of the multi-faceted corrugated pipe, such as... Figure 1 , 4 As shown, a first cooling component 2 is installed on the top of the workbench 1. The first cooling component 2 is located on the side of the second cooling component 3 away from the conveyor 4. The first cooling component 2 includes a base 201 fixedly installed on the top of the workbench 1. An arc-shaped cover plate 202 is installed on the top of the base 201 by bolts. The top of the base 201 has a semi-circular groove, which together with the cover plate 202 forms a circular hole. Two sponge pads 205 are fixed on the inner wall of the circular hole, and the two sponge pads 205 are respectively located on the cover plate 202 and the base 201.

[0029] Two sponge pads 205 form a cylinder. The inner diameter of the cylinder is smaller than the outer diameter of the corrugated pipe protrusion and larger than the outer diameter of the corrugated pipe recess, so that the corrugated pipe protrusion can fully contact the sponge pad 205. Both the base 201 and the cover plate 202 have cavities 203 inside. The inner wall of the circular hole has multiple water-permeable holes 204. The water-permeable holes 204 on the cover plate 202 and the base 201 are respectively connected to the two cavities 203, so that the sponge pad 205 can absorb cooling water. Both the base 201 and the cover plate 202 are fixedly equipped with flexible hoses, and the two hoses are respectively connected to the inside of the two cavities 203 to inject water into the cavity 203.

[0030] After initial shaping, the corrugated pipe enters the circular hole between the base 201 and the cover plate 202 through the second cooling component 3. The sponge pad 205 on the inner wall of the circular hole contacts the protrusion at the outer end of the corrugated pipe and is squeezed by the protrusion. At the same time, the hose injects cooling water into the cavity 203. The cooling water in the cavity 203 is absorbed into the sponge pad 205 through the water permeable hole 204. When the sponge pad 205 is squeezed by the protrusion of the corrugated pipe, the cooling water will flow out and contact the protrusion of the corrugated pipe, and then flow to the concave part of the corrugated pipe. In this way, the multi-faceted corrugated pipe after initial shaping is further cooled and shaped. After cooling is completed, the processing can be completed.

[0031] In this cooling method, the squeezed-out cooling water first contacts the protrusions of the corrugated pipe, and then contacts the recesses. For double-walled corrugated pipes, the outer surface is uneven while the inner surface is smooth. Therefore, the thickness of the protrusions is greater than that of the recesses. By cooling in this way, the cooling efficiency of the protrusions is greater than that of the recesses. Different cooling efficiencies are used according to the thickness of the corrugated pipe, so that the cooling effect of the corrugated pipe is more uniform.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A method for producing a multi-faceted corrugated pipe, characterized in that: Includes the following steps: S1: Connect the two injection pipes (12) to the extrusion port of the extruder to deliver two kinds of raw materials respectively. The two kinds of raw materials form the outer wall and inner wall of the corrugated pipe respectively. The outer wall material enters the gap between the outer pipe (5) and the inner pipe (11), and the inner wall material enters the gap between the sleeve (9) and the inner pipe (11). As the raw materials are continuously injected, the inner wall material is first squeezed out through the opening end of the inner pipe (11) and covers the outer end of the sleeve (9). When it moves to the opening end of the outer pipe (5), the outer wall material is also squeezed out and covers the outer end of the inner wall material. S2: The molds (10) on the two conveyors (4) are interlocked as the conveyors (4) move, and the raw material extruded from the outer end of the sleeve (9) is also filled into the cavity after the molds (10) are interlocked, so as to form the corrugated pipe. The moving speed of the molds (10) is consistent with the moving speed of the raw material at the outer end of the sleeve (9). S3: The material moves at the outer end of the sleeve (9), while the position of the sleeve (9) remains fixed. Therefore, friction is generated between the material and the sleeve (9). Under the action of friction, the sleeve (9) is driven by the movement of the material, causing the sleeve (9) to slide relative to the central column (7) at the outer end of the central column (7). The movement of the sleeve (9) pulls the spring (8), causing the spring (8) to be stretched. The electrode plate (13) on the inner wall of the sleeve (9) also slides at the outer end of the resistor strip (14). S4: After the raw material is formed at the mold (10), it passes between the two second cooling components (3) and the cooling water is input into the main pipe (302) through the water guide pipe (303). The cooling water inside the main pipe (302) enters the branch pipe (304) and is finally sprayed out through the atomizing nozzle (305). The sprayed water comes into contact with the formed raw material, so that the outer surface of the raw material is initially solidified and formed into a multi-faceted corrugated pipe. S5: After the initial shaping, the corrugated pipe enters the round hole between the base (201) and the cover plate (202) through the second cooling component (3). The sponge pad (205) on the inner wall of the round hole contacts the protrusion at the outer end of the corrugated pipe and is squeezed by the protrusion. At the same time, the hose injects cooling water into the cavity (203). The cooling water in the cavity (203) is absorbed into the sponge pad (205) through the water permeable hole (204). When the sponge pad (205) is squeezed by the protrusion of the corrugated pipe, the cooling water will flow out and contact the protrusion of the corrugated pipe, and then flow to the concave part of the corrugated pipe. In this way, the multi-faceted corrugated pipe after initial shaping is further cooled and shaped. After cooling is completed, the processing can be completed.

2. The method for producing a multi-faceted corrugated pipe according to claim 1, characterized in that: The above-mentioned multi-faceted corrugated pipe production method needs to be completed by a multi-faceted corrugated pipe production device, including a workbench (1). Two conveyors (4) are installed on the top of the workbench (1). Multiple molds (10) are installed on the conveyor belt of the conveyor (4). When the molds (10) on the two conveyors (4) move to the gap between the two conveyors (4), they can be engaged with each other.

3. The method for producing a multi-faceted corrugated pipe according to claim 2, characterized in that: A central column (7) is fixedly provided at the top of the workbench (1). One end of the central column (7) passes through the mold (10) between the two conveyors (4) and extends to the other side of the conveyor (4). A fixing plate (6) is fixedly provided at the other end of the central column (7). The fixing plate (6) is fixedly provided at the top of the workbench (1). The outer end of the central column (7) is fitted with a sleeve (9), and one end of the sleeve (9) is fitted with an end plate (15) by bolts. The end plate (15) has a vent hole (16) for ventilation.

4. The method for producing a multi-faceted corrugated pipe according to claim 3, characterized in that: The other end of the sleeve (9) is fixedly provided with a spring (8), which is located at the outer end of the central column (7). One end of the spring (8) is fixedly connected to the fixing plate (6). An electrode plate (13) is embedded on the inner wall of the sleeve (9), and a resistor strip (14) is embedded on the outer end of the central column (7). The electrode plate (13) and the outer end of the resistor strip (14) are in contact. When the electrode plate (13) and the resistor strip (14) are connected to the circuit, the resistance value of the resistor strip (14) in the circuit will be different depending on the position of their contact.

5. A method for producing a multi-faceted corrugated pipe according to claim 4, characterized in that: The outer end of the sleeve (9) is fitted with an outer tube (5), the outer tube (5) is located between the fixed plate (6) and the conveyor (4), the outer end of the sleeve (9) is fitted with an inner tube (11), the inner tube (11) is located inside the outer tube (5) and one end of the inner tube (11) is fixedly connected to the inner wall of the outer tube (5); The outer tube (5) is fixedly provided with two injection tubes (12) connected to the extruder. One of the injection tubes (12) extends into the outer tube (5) and is connected to the inner tube (11). A sealing ring is fixedly provided on the outer tube (5), and the inner side of the sealing ring is in contact with the outer end of the sleeve (9). The bottom end of the outer tube (5) is provided with a pad, and the top end of the outer tube (5) is provided with an arc-shaped pressure plate. The arc-shaped pressure plate is connected to the pad by bolts to clamp and fix the outer tube (5). The pad is fixedly set on the top end of the workbench (1).

6. A method for producing a multi-faceted corrugated pipe according to claim 2, characterized in that: The top of the workbench (1) is provided with two second cooling components (3), which are located on the other side of the conveyor (4). One end of the central column (7) and the sleeve (9) extends between the two second cooling components (3). The second cooling component (3) includes a main pipe (302), both ends of which are fixedly provided with vertical plates (301), the bottom end of which is fixedly connected to the workbench (1), and a water guide pipe (303) is fixedly provided on the main pipe (302). The main pipe (302) is fixedly provided with multiple branch pipes (304) at the top end, and an atomizing nozzle (305) is fixedly provided at one end of each branch pipe (304).

7. A method for producing a multi-faceted corrugated pipe according to claim 6, characterized in that: The top of the workbench (1) is equipped with a first cooling component (2), which is located on the side of the second cooling component (3) away from the conveyor (4). The first cooling component (2) includes a base (201) fixedly installed on the top of the workbench (1), and an arc-shaped cover plate (202) is installed on the top of the base (201) by bolts. The top of the base (201) is provided with a semi-circular groove, which together with the cover plate (202) forms a circular hole. Two sponge pads (205) are fixed on the inner wall of the circular hole, and the two sponge pads (205) are located on the cover plate (202) and the base (201) respectively.

8. A method for producing a multi-faceted corrugated pipe according to claim 6, characterized in that: Two sponge pads (205) form a cylinder, the inner diameter of which is smaller than the outer diameter of the corrugated pipe protrusion and larger than the outer diameter of the corrugated pipe recess; The base (201) and the cover plate (202) are both provided with cavities (203), and the inner wall of the circular hole is provided with multiple water-permeable holes (204). The water-permeable holes (204) on the cover plate (202) and the base (201) are respectively connected to the two cavities (203); Both the base (201) and the cover plate (202) are fixed with flexible hoses, and the two flexible hoses are respectively connected to the interior of the two cavities (203).

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