CN117774260A

CN117774260A - Extrusion device for double-wall corrugated pipe production line

Info

Publication number: CN117774260A
Application number: CN202311694872.8A
Authority: CN
Inventors: 苏雄; 苏光辉
Original assignee: Mangshi Radiance Plastic Technology Co ltd
Current assignee: Mangshi Radiance Plastic Technology Co ltd
Priority date: 2023-12-12
Filing date: 2023-12-12
Publication date: 2024-03-29

Abstract

The invention provides an extrusion device for a double-wall corrugated pipe production line. The double-wall corrugated pipe production line extrusion device comprises: the extrusion device comprises a machine barrel, a mounting shaft, an auger, a connecting seat and a main motor, wherein a feed hopper for adding raw materials into the machine barrel is arranged on the machine barrel, and an anti-blocking mechanism is arranged on the feed hopper; the heating assembly is arranged on the machine barrel and used for heating raw materials in the machine barrel; the extrusion device is provided with a mould assembly for forming molten plastics into a preliminary formed tube shape; the extrusion apparatus is further equipped with two clamping and shaping assemblies for clamping the preliminarily shaped plastic pipe so that its outer wall is corrugated. The extrusion device of the double-wall corrugated pipe production line provided by the invention can disturb the raw materials at the bottom opening of the feed hopper, and has the advantage of avoiding the influence on the quality of the corrugated pipe caused by the blockage of the raw materials.

Description

Extrusion device for double-wall corrugated pipe production line

Technical Field

The invention relates to the technical field of corrugated pipe production, in particular to an extrusion device for a double-wall corrugated pipe production line.

Background

The double-wall corrugated pipe is one new type pipe with annular outer wall and smooth inner wall and is made of mainly polyethylene. Due to the excellent performance and relatively economical cost of double-wall corrugated pipes, the double-wall corrugated pipe is widely popularized and applied in the aspect of being used as a drainage pipeline.

The double-wall corrugated pipe is mainly prepared from raw materials such as high-density polyethylene resin, black master batch particles, calcium carbonate and other auxiliary agents by heating to be in a molten state, extruding the raw materials through extrusion equipment, molding the raw materials through a die, and cooling the raw materials. In actual production, raw materials are pumped into the feed hopper of extrusion equipment through the pumping device, but in actual production, the raw materials in the feed hopper can appear blocking up because of the feed hopper bottom mouth is less to in the barrel that leads to the raw materials to not continuously evenly get into extrusion equipment, thereby can cause the influence to the quality of bellows.

Therefore, there is a need to provide a new extrusion device for a double-wall corrugated pipe production line, which solves the above technical problems.

Disclosure of Invention

The invention provides an extrusion device for a double-wall corrugated pipe production line, which aims to solve the technical problems that when extrusion equipment is used for producing a double-wall corrugated pipe, raw materials can be blocked at the bottom opening of a feed hopper, so that raw material blanking is unsmooth, and the production quality of the corrugated pipe is affected.

The extrusion device of the double-wall corrugated pipe production line provided by the invention comprises: the extrusion device comprises a machine barrel, a mounting shaft, an auger, a connecting seat and a main motor, wherein a feed hopper for adding raw materials into the machine barrel is arranged on the machine barrel, and an anti-blocking mechanism is arranged on the feed hopper; the heating assembly is arranged on the machine barrel and used for heating raw materials in the machine barrel; the extrusion device is provided with a mould assembly for forming molten plastics into a preliminary formed tube shape; the extrusion apparatus is further equipped with two clamping and shaping assemblies for clamping the preliminarily shaped plastic pipe so that its outer wall is corrugated.

Preferably, the installation shaft is rotatably installed in the machine barrel, the packing auger is fixedly installed on the installation shaft, the connecting seat is fixedly installed at one end of the machine barrel, the main motor is fixedly installed on the connecting seat, and an output shaft of the main motor is fixedly connected with one end of the installation shaft.

Preferably, the heating assembly comprises a heating ring and a protective outer cover, the heating ring surrounds the outer wall of the machine barrel, the protective outer cover is fixedly sleeved on the machine barrel, and the heating ring is arranged in the protective outer cover.

Preferably, the die assembly comprises an outer die cylinder and an inner die cylinder, the outer die cylinder is fixedly arranged at one end of the die cylinder, the inner die cylinder is arranged in the outer die cylinder, the inner die cylinder is fixedly connected with one end of the mounting shaft, and a tubular channel blended with plastic extrusion is formed between the outer die cylinder and the inner die cylinder.

Preferably, two the centre gripping shaping subassembly is located respectively directly over the centre gripping section of thick bamboo and under, the centre gripping shaping subassembly includes circulation conveying equipment, fixed mounting has a plurality of fixed blocks on circulation conveying equipment's the metal track, a plurality of equidistant setting of fixed block, a plurality of equal fixed mounting has the shaping anchor clamps on the fixed block, the shaping anchor clamps are semicircle tubular shape, just be equipped with the ripple recess that is used for making preliminary shaping pipe outer wall be the wave form on the inner arc face of shaping anchor clamps.

Preferably, the anti-blocking mechanism comprises a rotating shaft, a plurality of disturbance rods, two chain wheels and a chain, wherein the rotating shaft is rotatably installed in the feeding hopper, two ends of the rotating shaft extend out of the feeding hopper, the disturbance rods are fixedly installed on the rotating shaft, the two chain wheels are fixedly sleeved on one end of the rotating shaft and the installation shaft respectively, and the chain is meshed with the two chain wheels.

Preferably, bearing seats are fixedly arranged on two sides of the feeding hopper, and the rotating shaft is rotationally connected with the two bearing seats.

Preferably, the installation shaft is rotatably sleeved with a supporting ring, a sealing bearing is fixedly installed in the supporting ring, an inner ring of the sealing bearing is fixedly sleeved on the installation shaft, a plurality of supporting rods are fixedly installed on the outer wall of the supporting ring, and the supporting rods are fixedly connected with the inner wall of the machine barrel.

Preferably, the cooling box is further arranged at the downstream of the clamping forming assembly, four cooling assemblies are arranged in the cooling box, the four cooling assemblies are respectively arranged on the inner walls of the two sides, the inner wall of the top and the inner wall of the bottom of the cooling box, the cooling assemblies comprise a mounting pipe and a plurality of nozzles, the mounting pipe is fixedly arranged on the inner wall of the cooling box through a pipe clamp, the nozzles are fixedly arranged on the mounting pipe, one end of the mounting pipe is of a closed structure, the other end of the mounting pipe is connected with a water outlet end of a water pump arranged outside through a pipeline, a drain pipe used for draining is fixedly arranged at the bottom of the cooling box, a valve is arranged on the drain pipe, and an inlet and an outlet are arranged on two sides of the cooling box.

Preferably, the bellows after the cooling tank is further provided with a driving mechanism after driving forming, the driving mechanism comprises two frames, a plurality of driving rollers, a base, a driving motor, a main belt pulley and a plurality of driving belt pulleys, the bottom I of each frame is provided with a plurality of supporting legs, the driving rollers are arranged between the two frames, the driving rollers are provided with tooth grooves meshed with the outer wall ripple of the bellows, the two ends of each driving roller are fixedly provided with a central shaft, the central shafts are in rotary connection with the corresponding frames, the base is fixedly arranged on the supporting legs of each frame, the driving motor is fixedly arranged on the base, the output shafts of the driving motor are fixedly sleeved with the driving belt pulleys respectively, the driving belt pulleys are sleeved with the central shafts of the same end of each driving roller, the central shafts are sleeved with the two driving belt pulleys, the two adjacent central shaft driving belt pulleys are connected through belts, and the main belt pulley is connected with one corresponding driving belt pulley through the belt.

Compared with the related art, the extrusion device of the double-wall corrugated pipe production line has the following beneficial effects:

the invention provides an extrusion device for a double-wall corrugated pipe production line, which comprises:

1. pushing the raw materials falling in the feed hopper through extrusion equipment, heating the raw materials into a molten state through a heating ring, forming the raw materials into a tube shape through a die assembly under extrusion of the extrusion equipment, clamping the plastic tube in a high-temperature state into a corrugated tube through two clamping and forming assemblies, comprehensively cooling the corrugated tube through four cooling mechanisms in a cooling box to harden the corrugated tube, and conveying the cooled and hardened corrugated tube through a driving mechanism;

2. the anti-blocking mechanism can be arranged to disturb the raw materials at the bottom opening of the feed hopper, so that the quality of the corrugated pipe is prevented from being influenced due to the blocking of the raw materials.

Drawings

FIG. 1 is a schematic cross-sectional side view of a preferred embodiment of an extrusion device for a double-wall bellows production line according to the present invention;

FIG. 2 is an enlarged schematic view of portion A shown in FIG. 1;

FIG. 3 is an enlarged schematic view of portion B shown in FIG. 1;

FIG. 4 is an enlarged schematic view of portion C of FIG. 1;

FIG. 5 is a schematic three-dimensional structure of the connecting seat according to the present invention;

FIG. 6 is a schematic diagram showing the front view of the support ring and the support rod according to the present invention;

FIG. 7 is a schematic top view of a forming clamp according to the present invention;

FIG. 8 is a schematic view of a three-dimensional structure of a forming jig according to the present invention;

FIG. 9 is a state diagram of a drive roller driving bellows in the present invention;

FIG. 10 is a schematic side view of the present invention;

fig. 11 is an enlarged schematic view of a portion D shown in fig. 10.

Reference numerals in the drawings: 1. a barrel; 2. a mounting shaft; 3. an auger; 4. a connecting seat; 5. a main motor; 6. a feed hopper; 7. a heating ring; 8. a protective outer cover; 9. an outer mold cylinder; 10. an inner mold cylinder; 11. a circulating conveying device; 12. a metal crawler belt; 13. a fixed block; 14. a forming clamp; 15. a bearing seat; 16. a rotating shaft; 17. a disturbance rod; 18. a sprocket; 19. a chain; 20. a support ring; 21. a support rod; 22. a cooling box; 23. installing a pipe; 24. a nozzle; 25. a drain pipe; 26. a frame; 27. a driving roller; 28. a center shaft; 29. a base; 30. a driving motor; 31. a main pulley; 32. a driving pulley.

Detailed Description

The invention will be further described with reference to the drawings and embodiments.

Referring to fig. 1-11 in combination, fig. 1 is a schematic cross-sectional side view of a preferred embodiment of an extrusion device for a double-wall bellows production line according to the present invention; FIG. 2 is an enlarged schematic view of portion A shown in FIG. 1; FIG. 3 is an enlarged schematic view of portion B shown in FIG. 1;

FIG. 4 is an enlarged schematic view of portion C of FIG. 1; FIG. 5 is a schematic three-dimensional structure of the connecting seat according to the present invention; FIG. 6 is a schematic diagram showing the front view of the support ring and the support rod according to the present invention;

FIG. 7 is a schematic top view of a forming clamp according to the present invention; FIG. 8 is a schematic view of a three-dimensional structure of a forming jig according to the present invention; FIG. 9 is a state diagram of a drive roller driving bellows in the present invention;

FIG. 10 is a schematic side view of the present invention; fig. 11 is an enlarged schematic view of a portion D shown in fig. 10.

The extrusion device of the double-wall corrugated pipe production line comprises: the extrusion equipment comprises a machine barrel 1, a mounting shaft 2, an auger 3, a connecting seat 4 and a main motor 5, wherein a feed hopper 6 for adding raw materials into the machine barrel 1 is arranged on the machine barrel 1, and an anti-blocking mechanism is arranged on the feed hopper 6; a heating assembly for heating the raw materials in the machine barrel 1 is arranged on the machine barrel 1; the extrusion device is provided with a mould assembly for forming molten plastics into a preliminary formed tube shape; the extrusion apparatus is further equipped with two clamping and shaping assemblies for clamping the preliminarily shaped plastic pipe so that its outer wall is corrugated.

The installation shaft 2 is rotatably installed in the machine barrel 1, the packing auger 3 is fixedly installed on the installation shaft 2, the connecting seat 4 is fixedly installed at one end of the machine barrel 1, the main motor 5 is fixedly installed on the connecting seat 4, an output shaft of the main motor 5 is fixedly connected with one end of the installation shaft 2, and raw materials falling in the feed hopper 6 are pushed through extrusion equipment.

The heating assembly comprises a heating ring 7 and a protective outer cover 8, wherein the heating ring 7 surrounds the outer wall of the machine barrel 1, the protective outer cover 8 is fixedly sleeved on the machine barrel 1, the heating ring 7 is arranged in the protective outer cover 8, and a heating area is formed on the machine barrel 1 through the heating ring 7, so that raw materials pushed to the heating area are heated to be in a molten state.

The die assembly comprises an outer die cylinder 9 and an inner die cylinder 10, wherein the outer die cylinder 9 is fixedly arranged at one end of the machine cylinder 1, the inner die cylinder 10 is arranged in the outer die cylinder 9, the inner die cylinder 10 is fixedly connected with one end of the mounting shaft 2, a tubular passage which is fused with plastic for extrusion is formed between the outer die cylinder 9 and the inner die cylinder 10, the molten plastic is extruded by extrusion equipment, a tubular passage which is fused with plastic for extrusion is formed between the outer die cylinder 9 and the inner die cylinder 10, the molten plastic is formed into a tubular shape, and is far away from a heating area, and preliminary natural cooling is obtained.

The two clamping forming assemblies are respectively located right above and right below the inner die cylinder 10, each clamping forming assembly comprises a circulating conveying device 11, a plurality of fixing blocks 13 are fixedly installed on a metal crawler 12 of each circulating conveying device 11, the fixing blocks 13 are arranged at equal intervals, a plurality of forming clamps 14 are fixedly installed on the fixing blocks 13, each forming clamp 14 is in a semicircular column pipe shape, corrugated grooves used for enabling the outer wall of a primary forming pipe to be corrugated are formed in the inner arc surface of each forming clamp 14, and the outer wall of each pipe is clamped through cooperation of the two clamping forming assemblies.

The anti-blocking mechanism comprises a rotating shaft 16, a plurality of disturbance rods 17, two chain wheels 18 and a chain 19, wherein the rotating shaft 16 is rotatably installed in the feed hopper 6, two ends of the rotating shaft 16 extend out of the feed hopper 6, the disturbance rods 17 are fixedly installed on the rotating shaft 16, the two chain wheels 18 are fixedly sleeved on one end of the rotating shaft 16 and the installation shaft 2 respectively, the chain 19 is meshed with the two chain wheels 18, and when raw materials are pushed by extrusion equipment, the raw materials at the bottom opening of the feed hopper 6 can be disturbed by the anti-blocking mechanism, so that the raw materials are prevented from being blocked at the bottom opening of the feed hopper 6.

The bearing seats 15 are fixedly arranged on two sides of the feeding hopper 6, the rotating shafts 16 are rotatably connected with the two bearing seats 15, and the rotating shafts 16 are supported by the bearing seats 15 and stably rotate.

The installation shaft 2 is rotatably sleeved with a support ring 20, a sealing bearing is fixedly installed in the support ring 20, an inner ring of the sealing bearing is fixedly sleeved on the installation shaft 2, a plurality of support rods 21 are fixedly installed on the outer wall of the support ring 20, the support rods 21 are fixedly connected with the inner wall of the machine barrel 1, the support ring 20 and the support rods 21 are used for supporting the installation shaft 2, and the stability of the installation shaft 2 and the inner mold barrel 10 is improved.

The cooling device comprises a clamping forming assembly, and is characterized in that a cooling box 22 is further arranged at the downstream of the clamping forming assembly, four cooling assemblies are arranged in the cooling box 22, the four cooling assemblies are respectively arranged on the inner walls at two sides of the cooling box 22, the inner wall at the top and the inner wall at the bottom, the cooling assemblies comprise a mounting pipe 23 and a plurality of nozzles 24, the mounting pipe 23 is fixedly arranged on the inner wall of the cooling box 22 through a pipe clamp, the plurality of nozzles 24 are fixedly arranged on the mounting pipe 23, one end of the mounting pipe 23 is of a closed structure, the other end of the mounting pipe 23 is connected with the water outlet end of a water pump arranged outside through a pipeline, a drain pipe 25 used for draining is fixedly arranged at the bottom of the cooling box 22, a valve is arranged on the drain pipe 25, and the two sides of the cooling box 22 are provided with an inlet and an outlet through the four cooling mechanisms in the cooling box 22, so that the corrugated pipe can be comprehensively cooled and hardened by rapid cooling.

The lower reaches of cooling tank 22 still is equipped with the bellows after the drive shaping and carries out actuating mechanism, actuating mechanism is including two frames 26, a plurality of drive roller 27, base 29, driving motor 30, main belt pulley 31 and a plurality of drive pulley 32, and two the I bottom of frame 26 all is equipped with a plurality of supporting leg, and a plurality of drive roller 27 all locates two between the frame 26, a plurality of all be equipped with on the drive roller 27 with bellows outer wall ripple engaged tooth's socket, a plurality of the both ends of drive roller 27 are all fixed mounting has axis 28, axis 28 and corresponding frame 26 rotate and are connected, base 29 fixed mounting is in two on the supporting leg of frame 26, driving motor 30 fixed mounting is in on the base 29, main belt pulley 31 fixed sleeve is established on driving motor 30's the output shaft, a plurality of drive pulley 32 respectively fixed sleeve is established in a plurality of drive roller 27 is epaxial 28 with the one end, and this epaxial sleeve is established two drive pulley 32, two belt pulleys 28 are last to be equipped with the toothed groove that meshes with bellows outer wall ripple, two belt pulleys 28 that pass through the connection between two drive pulley 28 and the corresponding bellows after the cooling through the cooling down through the cooling belt 31, can avoid the bellows to receive after the cooling and the cooling down through the corresponding bellows to pass through the connection when the cooling mechanism.

It should be noted that, in the present invention, the circuits, electronic components and modules are all related to the prior art, and those skilled in the art may implement the present invention completely, and it is needless to say that the protection of the present invention does not relate to improvement of software and methods.

The working principle of the extrusion device of the double-wall corrugated pipe production line provided by the invention is as follows:

the scheme is also provided with an electric control cabinet, the electric control cabinet is arranged on the equipment, when the electric control cabinet is used, each electric equipment can be started to operate respectively, the power connection mode of each electric equipment is the prior mature technology, is a well-known technology of the person in the field, and is not redundant;

when the device is used, the heating ring 7 is started to preheat the machine barrel 1, and mixed raw materials such as high-density polyethylene resin, black master batch, calcium carbonate and other auxiliary agents are continuously conveyed into the feed hopper 6 through pumping equipment, and enter the machine barrel 1 from the bottom opening of the feed hopper 6;

the main motor 5 is started to drive the installation shaft 2 to rotate, so that the auger 3 pushes raw materials, and meanwhile, the installation shaft 2 drives the rotating shaft 16 to rotate through the chain wheel 18 and the chain 19, so that the disturbance rod 17 is driven to disturb the raw materials at the bottom opening of the feed hopper 6, the raw materials are prevented from being blocked, and the raw materials are ensured to continuously and uniformly enter the machine barrel 1;

the raw materials move forward under the pushing of the auger 3, pass through the heating area of the heating ring 7, melt the raw materials, extrude out of the tubular channel between the outer mold cylinder 9 and the inner mold cylinder 10 through the extrusion of the auger 3 to form a tubular plastic pipe, and keep away from the heating area to obtain preliminary natural cooling;

the plastic pipe in the high temperature state passes through the clamping forming assembly, the forming clamp 14 is driven by the metal crawler belt 12 to circularly move, and the forming clamp 14 in the upper clamping forming assembly and the lower clamping forming assembly are matched to clamp the outer wall of the plastic pipe in the high temperature state into a corrugated shape;

the corrugated pipe in the corrugated shape passes through the cooling box 22, and the nozzles 24 on the four mounting pipes 23 in the cooling box 22 spray water to the upper side and the lower side of the corrugated pipe, so that the corrugated pipe is cooled and hardened;

the cooled and hardened corrugated pipe passes through the driving rollers 27, and is driven by the driving motor 30, and the driving rollers 27 synchronously rotate under the transmission of the main belt pulley 31, the transmission belt pulley 32 and the belt, so that tooth grooves of the driving rollers 27 are meshed with the corrugations of the outer wall of the corrugated pipe, and the corrugated pipe is conveyed.

the invention provides a double-wall corrugated pipe production line extrusion device, which pushes raw materials falling in a feed hopper 6 through extrusion equipment, heats the raw materials into a molten state through a heating ring 7, forms a pipe shape through a die assembly under extrusion of the extrusion equipment, clamps the plastic pipe in a high-temperature state into a corrugated pipe through two clamping and forming assemblies, comprehensively cools the corrugated pipe through four cooling mechanisms in a cooling box 22, hardens the corrugated pipe, and conveys the cooled and hardened corrugated pipe through a driving mechanism;

and, through setting up anti-blocking mechanism can disturb the raw materials of feeder hopper 6 bottom mouth, avoid the raw materials to block up and cause the quality of bellows to receive the influence.

The device structure and the drawings of the present invention mainly describe the principle of the present invention, and in terms of the technology of the design principle, the arrangement of the power mechanism, the power supply system, the control system, etc. of the device is not completely described, but the specific details of the power mechanism, the power supply system, and the control system thereof can be clearly known on the premise that those skilled in the art understand the principle of the present invention.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. A double-wall bellows production line extrusion device, comprising:

the extrusion device comprises a machine barrel, a mounting shaft, an auger, a connecting seat and a main motor, wherein a feed hopper for adding raw materials into the machine barrel is arranged on the machine barrel, and an anti-blocking mechanism is arranged on the feed hopper;

the heating assembly is arranged on the machine barrel and used for heating raw materials in the machine barrel;

the extrusion device is provided with a mould assembly for forming molten plastics into a preliminary formed tube shape;

the extrusion apparatus is further equipped with two clamping and shaping assemblies for clamping the preliminarily shaped plastic pipe so that its outer wall is corrugated.

2. The double-wall corrugated pipe production line extrusion device according to claim 1, wherein the installation shaft is rotatably installed in the machine barrel, the packing auger is fixedly installed on the installation shaft, the connecting seat is fixedly installed at one end of the machine barrel, the main motor is fixedly installed on the connecting seat, and an output shaft of the main motor is fixedly connected with one end of the installation shaft.

3. The twin-wall bellows production line extrusion apparatus of claim 1, wherein the heating assembly comprises a heating collar and a protective outer cover, the heating collar encircling the outer wall of the barrel, the protective outer cover being fixedly mounted on the barrel, the heating collar being disposed within the protective outer cover.

4. The extrusion device of a double-wall corrugated pipe production line according to claim 1, wherein the die assembly comprises an outer die cylinder and an inner die cylinder, the outer die cylinder is fixedly arranged at one end of the die cylinder, the inner die cylinder is arranged in the outer die cylinder, the inner die cylinder is fixedly connected with one end of the mounting shaft, and a tubular channel which is integrated with plastic extrusion is formed between the outer die cylinder and the inner die cylinder.

5. The extrusion device of a double-wall corrugated pipe production line according to claim 4, wherein two clamping forming assemblies are respectively located right above and right below the inner mold cylinder, each clamping forming assembly comprises a circulating conveying device, a plurality of fixing blocks are fixedly installed on a metal crawler of each circulating conveying device, the fixing blocks are arranged at equal intervals, forming clamps are fixedly installed on the fixing blocks, each forming clamp is in a semicircular column pipe shape, and corrugated grooves for enabling the outer wall of a primary forming pipe to be corrugated are formed in the inner arc surface of each forming clamp.

6. The extrusion device of the double-wall corrugated pipe production line according to claim 1, wherein the anti-blocking mechanism comprises a rotating shaft, a plurality of disturbance rods, two chain wheels and a chain, the rotating shaft is rotatably installed in the feed hopper, two ends of the rotating shaft extend out of the feed hopper, the disturbance rods are fixedly installed on the rotating shaft, the two chain wheels are fixedly sleeved on one end of the rotating shaft and the installation shaft respectively, and the chain is meshed with the two chain wheels.

7. The extrusion device of a double-wall corrugated pipe production line according to claim 6, wherein bearing seats are fixedly arranged on two sides of the feeding hopper, and the rotating shaft is rotatably connected with the two bearing seats.

8. The extrusion device of the double-wall corrugated pipe production line according to claim 1, wherein a supporting ring is sleeved on the installation shaft in a rotating mode, a sealing bearing is fixedly installed in the supporting ring, an inner ring of the sealing bearing is fixedly sleeved on the installation shaft, a plurality of supporting rods are fixedly installed on the outer wall of the supporting ring, and a plurality of supporting rods are fixedly connected with the inner wall of the machine barrel.

9. The extrusion device of a double-wall corrugated pipe production line according to claim 1, wherein a cooling tank is further arranged at the downstream of the clamping forming assembly, four cooling assemblies are arranged in the cooling tank, the four cooling assemblies are respectively arranged on the inner walls at two sides and the inner wall at the top and the inner wall at the bottom of the cooling tank, the cooling assemblies comprise a mounting pipe and a plurality of nozzles, the mounting pipe is fixedly arranged on the inner wall of the cooling tank through a pipe clamp, the nozzles are fixedly arranged on the mounting pipe, one end of the mounting pipe is of a closed structure, the other end of the mounting pipe is connected with a water outlet end of a water pump arranged outside through a pipeline, a drain pipe used for draining water is fixedly arranged at the bottom of the cooling tank, a valve is arranged on the drain pipe, and an inlet and an outlet are arranged at two sides of the cooling tank.

10. The extrusion device of a double-wall corrugated pipe production line according to claim 9, wherein a driving mechanism is further arranged at the downstream of the cooling box and used for driving the formed corrugated pipe, the driving mechanism comprises two frames, a plurality of driving rollers, a base, a driving motor, a main belt pulley and a plurality of driving belt pulleys, a plurality of supporting legs are arranged at the bottom of I of each frame, the driving rollers are arranged between the two frames, tooth grooves meshed with the corrugations of the outer wall of the corrugated pipe are formed in the driving rollers, center shafts are fixedly arranged at two ends of each driving roller, the center shafts are in rotary connection with the corresponding frames, the base is fixedly arranged on the supporting legs of the two frames, the driving motor is fixedly arranged on the base, the main belt pulley is fixedly sleeved on an output shaft of the driving motor, the driving belt pulleys are respectively fixedly sleeved on the center shafts of the same ends of the driving rollers, the driving belt pulleys are sleeved on the center shafts, the two driving belt pulleys are fixedly connected with the driving belt pulleys through belts, and the driving belt pulleys are correspondingly connected with the driving belt pulleys.