Pipe extruder for producing PE water pipe with internal spiral flow channel

Abstract

The invention relates to the technical field of extruders, and discloses a pipe extruder for producing an inner spiral flow channel PE water pipe, the pipe extruder comprises a workbench and a middle pipe, one side of the top of the workbench is fixedly provided with an extrusion assembly, and one side of the top of the workbench is slidably provided with a sliding seat. The middle pipe is driven by the positioning assembly to get close to the extrusion assembly, and the middle pipe is located at the extrusion position of the pipe blank, so that the pipe blank which is just extruded can directly sleeve the outer side of the middle pipe, the middle pipe can form inner support at the same time, and a common connecting part of the pipe blank and a traction pipe is formed; the extruder is in contact with waste of a pipe blank in the initial starting stage and is directly sleeved with a standard pipe blank in the follow-up process, the shape of the pipe blank is supported through the middle pipe, the stability of the follow-up traction process is guaranteed, meanwhile, the pipe blank waste makes contact with the middle pipe to form indirect heating, it can be guaranteed that the relative temperature of all the pipes is within the rated range, and the production efficiency is improved. And the stability of traction operation is further ensured.

Description

Technical Field

[0001] This application relates to the field of extruder technology, and in particular to a pipe extruder for producing PE water pipes with an internal spiral flow channel. Background Technology

[0002] The raw material for PE water pipes with internal spiral flow channels is mainly polyethylene. In the production process of PE pipes, a corresponding extruder is used to shear, heat, and extrude the molten material to form a continuous pipe blank. After cooling and shaping, the desired pipe is formed. Existing extruders include a mixing and shearing assembly, an extrusion assembly, a shaping assembly, and a traction assembly. The raw material, after being mixed by the mixing and shearing assembly, is fed into the extrusion assembly, where it is sheared and heated by the screw. It is gradually plasticized into a homogeneous melt through the conveying section, melting section, and mixing section. The melt is extruded through the die of the base assembly to form a pipe blank. With the help of the traction assembly, the pipe blank passes through the shaping assembly, and then is cut to a set length using a cutting machine. Finally, the pipes are stacked to complete the production of the PE pipe.

[0003] In the current extruder, during the start-up phase, the polyethylene material extruded under unstable working conditions is manually discarded until the working pressure, temperature and other parameters of the extrusion assembly reach a stable state. Then, the tube blank is pulled onto the traction tube with a smaller diameter, fitted and pressed to bond and fix it. The traction tube is set inside the shaping assembly and connected to the traction assembly. Before bonding, the traction tube needs to be preheated to ensure that the temperature difference between the traction tube and the tube blank is within the rated range to guarantee the bonding effect. After bonding and fixing, the traction assembly drives the traction tube to move at the rated speed to complete the traction connection of the tube blank.

[0004] However, existing extruders require manual traction of the initial tube blank during operation. The traction assembly needs to be activated synchronously when the tube blank and traction tube are connected. Therefore, multiple experienced workers are required. Furthermore, due to the difficulty in controlling the force of manual gripping, the unshaped tube blank is prone to deformation under excessive pressure, causing deformation before it is connected to the traction tube. This affects the subsequent connection process and can easily lead to traction problems. Using a smaller diameter traction tube reduces the contact area between the traction tube and the tube blank, resulting in a decrease in the bonding area, affecting the connection stability, and making it difficult to complete the traction process. Summary of the Invention

[0005] This application proposes a pipe extruder for producing PE water pipes with an internal spiral flow channel. It has the advantages of ensuring the temperature of each pipe fitting during traction connection and maintaining the shape of the pipe blank, thereby solving the problem that the pipe blank is easily clamped and deformed at high temperature, which is not conducive to the connection with the traction pipe and affects the traction operation.

[0006] To achieve the above objectives, this application adopts the following technical solution: a pipe extruder for producing PE water pipes with an internal spiral flow channel, comprising a worktable and an intermediate pipe. An extrusion assembly is fixedly installed on one side of the top of the worktable, a sliding seat is slidably installed on one side of the top of the worktable, a clamping and pressure applying mechanism is installed on one side of the sliding seat, a moving plate is slidably installed on one side of the top of the sliding seat, an adjusting seat is slidably installed on one side of the moving plate, a positioning mechanism is installed on the top of the adjusting seat, the positioning mechanism is used to position the intermediate pipe, and a shearing mechanism is installed on the top of the adjusting seat.

[0007] The sliding seat, moving plate, and adjusting seat can all be driven by corresponding drive components to move horizontally in a linear fashion to adjust the position of the positioning mechanism and the clamping and pressing mechanism, so that the intermediate tube moves closer to the extrusion component and contacts the waste material of the tube blank. The shearing mechanism is used to shear and remove the waste material, and the intermediate tube is used to simultaneously sleeve and bond with the tube blank and the traction tube.

[0008] Furthermore, the positioning mechanism includes a connecting seat, which is fixedly connected to an adjusting seat. A plurality of guide grooves are provided on one side of the connecting seat. An adjusting plate is rotatably connected to one side of the connecting seat. An adjusting groove is provided on one side of the adjusting plate. An adjusting rod is slidably sleeved on the inner side of the adjusting groove. A support block is fixedly connected to one side of the connecting block. A No. 1 motor is fixedly installed on one side of the connecting seat.

[0009] Furthermore, the adjusting groove is configured as an arc-shaped through groove and the number of grooves is adapted to the number of guide grooves. The position of the adjusting groove corresponds to the position of the guide groove. The distance from different positions of the adjusting groove to the rotation center of the adjusting disc is different. The adjusting rod is slidably sleeved with the guide groove.

[0010] Furthermore, the shearing mechanism includes a transmission gear, which is rotatably mounted on one side of the adjusting seat. A connecting gear ring is rotatably mounted on one side of the adjusting seat, and the connecting gear ring meshes with the transmission gear. A second motor is mounted on one side of the adjusting seat, and the output end of the second motor is connected to the transmission gear via a rotating shaft. The second motor can drive the transmission gear to rotate. A rotating cylinder is fixedly sleeved on one side of the connecting gear ring, and a first cutter is fixedly connected to one side of the rotating cylinder. A second cutter is fixedly connected to the outer side of the connecting seat.

[0011] Furthermore, the clamping and pressing mechanism includes a connecting plate, which is fixedly connected to the sliding seat. A plurality of pressing components are provided on the inner side of the connecting plate. Each pressing component includes a guide cylinder, and a sliding rod is slidably sleeved on the inner side of the guide cylinder. One end of the sliding rod is fixedly connected to an arc-shaped plate.

[0012] Furthermore, a permanent magnet is fixedly installed at one end of the sliding rod located inside the guide cylinder, an electromagnet is fixedly installed on one side of the guide cylinder, and a spring is movably sleeved on one side inside the guide cylinder. The force between the electromagnet and the permanent magnet is a repulsive force, and the magnitude of the repulsive force is greater than the magnitude of the spring force. The curvature of the inner arc surface of the arc plate is adapted to the curvature of the outer wall of the tube blank.

[0013] Furthermore, a fixed cylinder is fixedly connected to one side of the adjusting seat, and an impeller is provided on the inner side of the fixed cylinder. The impeller is coaxially connected to the transmission gear via a rotating shaft. An air inlet is provided on one side of the fixed cylinder, and an air outlet pipe is fixedly connected to the other side of the fixed cylinder. A sealing plate is fixedly connected to one side of the connecting seat.

[0014] Furthermore, a shaping component is fixedly installed on one side of the top of the workbench, a heating component is installed on one side of the shaping component, and a collection box is fixedly installed on the bottom side of the extrusion component.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This application provides a pipe extruder for producing PE water pipes with an internal spiral flow channel. The intermediate pipe is temporarily positioned by a positioning mechanism and driven to approach the extrusion assembly. In the initial stage of the extruder's start-up, it comes into contact with the waste material of the pipe blank and directly sleeves with the qualified pipe blank in the subsequent process. By switching the clamping and pressure-applying mechanism, the sleeve and bonding of the pipe blank and the intermediate pipe are completed at the same time as the pipe blank is extruded. The intermediate pipe is used to support the shape of the pipe blank, ensuring the stability of the subsequent traction process. At the same time, the contact between the waste material of the pipe blank and the intermediate pipe indirectly heats the intermediate pipe, which can ensure that the heating temperature of the intermediate pipe is similar to that of the pipe blank and not too high, thus affecting the bonding effect. This further ensures the stability of the traction operation and does not require the cooperation of multiple workers. During the pressure bonding process, the traction assembly, the extrusion speed of the pipe blank, and the intermediate pipe maintain the same speed, improving the work efficiency.

[0017] 2. The pipe extruder for producing PE water pipes with an internal spiral flow channel provided in this application generates relatively high pressure by synchronously driving the impeller to rotate with a No. 2 motor. The end of the intermediate pipe away from the extrusion assembly is sealed by a sealing plate, so that the high-pressure airflow enters the gap between the intermediate pipe and the die head of the extrusion assembly and then enters the gap between the intermediate pipe and the pipe blank waste, thereby forming a "gas film" to reduce the possibility of the pipe blank waste sticking to the intermediate pipe and further improve the reliability of the extruder. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0019] Figure 1 This is a schematic diagram of the overall structure of this application;

[0020] Figure 2 This is a schematic diagram of the structure of the sliding seat in this application;

[0021] Figure 3 This is a schematic diagram of the structure at the connecting plate of this application;

[0022] Figure 4 This is a schematic diagram of the structure of the regulating disc in this application;

[0023] Figure 5 This is a schematic cross-sectional view of the structure at the intermediate pipe in this application;

[0024] Figure 6 For this application Figure 5 Enlarged view of the structure at point A in the image;

[0025] Figure 7 This is a schematic cross-sectional view of the structure at the fixed cylinder in this application;

[0026] Figure 8 This is a schematic cross-sectional view of the guide tube structure in this application.

[0027] In the diagram: 1. Workbench; 2. Extrusion assembly; 3. Shaping assembly; 4. Billet; 5. Intermediate tube; 6. Traction tube; 7. Sliding seat; 8. Adjusting seat; 9. Connecting seat; 10. Guide groove; 11. Adjusting disc; 12. Adjusting groove; 13. Adjusting rod; 14. Connecting block; 15. Support block; 16. Motor No. 1; 17. Transmission gear; 18. Connecting gear ring; 19. Rotating cylinder; 20. Cutting tool No. 1; 21. Cutting tool No. 2; 22. Motor No. 2; 23. Fixed cylinder; 24. Impeller; 25. Air outlet pipe; 26. Sealing plate; 27. Connecting plate; 28. Guide cylinder; 29. ​​Sliding rod; 30. Permanent magnet; 31. Electromagnet; 32. Arc plate; 33. Heating assembly; 34. Moving plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1, as Figures 1-8 A pipe extruder for producing PE water pipes with an internal spiral flow channel includes a worktable 1. An extrusion assembly 2 is fixedly installed on one side of the top of the worktable 1. The extrusion assembly 2 is used to shear, heat, melt, and extrude the mixed raw materials to form a continuous PE pipe blank 4. A shaping assembly 3 is fixedly installed on the other side of the top of the worktable 1. The shaping assembly 3 is used to cool and shape the pipe blank. (See reference...) Figure 2 A sliding seat 7 is slidably mounted on one side of the top of the worktable 1. The sliding seat 7 is driven to move horizontally relative to the worktable 1 by a drive assembly. The drive assembly corresponding to the sliding seat 7 can be set as an electric push rod, or it can be set as a lead screw linear motion module. (See reference...) Figure 3 A movable plate 34 is slidably provided on one side of the top of the sliding seat 7.

[0030] An adjusting seat 8 is slidably mounted on one side of the movable plate 34. Both the movable plate 34 and the adjusting seat 8 are driven by corresponding drive components. The movable plate 34 can move horizontally relative to the sliding seat 7, and the adjusting seat 8 can move horizontally relative to the movable plate 34. (See reference...) Figure 6 A connecting seat 9 is fixedly connected to one side of the adjusting seat 8. The moving plate 34 is used to drive the connecting seat 9 to move horizontally in the radial direction of the tube blank 4. A guide groove 10 is provided on one side of the connecting seat 9. The guide groove 10 is a through groove and the number is set to several. An adjusting plate 11 is rotatably connected to one side of the connecting seat 9. An adjusting groove 12 is provided on one side of the adjusting plate 11. The adjusting groove 12 is an arc-shaped through groove and the number is adapted to the number of guide grooves 10. The position of the adjusting groove 12 corresponds to the position of the guide groove 10.

[0031] The distance from different positions of the adjusting groove 12 to the rotation center of the adjusting disk 11 is different. An adjusting rod 13 is slidably sleeved on the inner side of the adjusting groove 12. The adjusting rod 13 is slidably sleeved with the guide groove 10. The guide groove 10 extends along the radial direction of the adjusting disk 11. The position of the adjusting rod 13 is within the corresponding area of ​​the adjusting groove 12 and the guide groove 10. When the adjusting disk 11 drives the adjusting groove 12 to rotate relative to the guide groove 10, the inner wall of the adjusting groove 12 abuts against the adjusting rod 13, causing the adjusting rod 13 to slide along the guide groove 10, thereby changing the distance from the adjusting rod 13 to the rotation center of the adjusting disk 11. A connecting block 14 is fixedly connected to one end of the adjusting rod 13. The cross-sectional shape of the adjusting rod 13 is T-shaped. The adjusting rod 13 can slide along the adjusting groove 12 while keeping its axis parallel to the rotation center line of the adjusting disk 11. A support block 15 is fixedly connected to one side of the connecting block 14.

[0032] The side of the support block 15 away from the adjusting plate 11 is arc-shaped. A No. 1 motor 16 is fixedly installed on one side of the connecting seat 9. The output end of the No. 1 motor 16 is connected to the adjusting plate 11 through a rotating shaft. The No. 1 motor 16 is used to drive the adjusting plate 11 to rotate relative to the connecting seat 9. It also includes an intermediate tube 5, which is used to connect with the traction tube 6 and the tube blank 4. The material of the intermediate tube 5 is the same as that of the traction tube 6. The intermediate tube 5 is used to pre-connect with the tube blank 4 and support the tube blank 4 to maintain the cross-sectional shape of the tube blank 4. The inner and outer diameters of the traction tube 6 are equal to the inner and outer diameters of the tube blank 4. The intermediate tube 5 and the traction tube 6 are temporary components. Each time they are used, a new intermediate tube 5 and traction tube 6 need to be replaced to ensure stable bonding.

[0033] A connecting plate 27 is fixedly connected to one side of the sliding seat 7. Several clamping components are arranged on the inner side of the connecting plate 27, and these clamping components are symmetrically arranged about the adjusting plate 11. (See reference...) Figure 8 The clamping assembly includes a guide cylinder 28, with a sliding rod 29 slidably sleeved on the inner side of the guide cylinder 28. The sliding rod 29 has a T-shaped cross-section and can slide axially without disengaging from the guide cylinder 28. A permanent magnet 30 is fixedly installed at one end of the sliding rod 29 located inside the guide cylinder 28, and an electromagnet 31 is fixedly installed on one side of the guide cylinder 28. A spring is movably sleeved on one side inside the guide cylinder 28. The spring is used to push the sliding rod 29 to move and retract into the guide cylinder 28. The force between the electromagnet 31 and the permanent magnet 30 is a repulsive force, and the magnitude of the repulsive force is greater than the magnitude of the spring force. An arc plate 32 is fixedly connected to one end of the sliding rod 29. The arc surface curvature of the inner side of the arc plate 32 is adapted to the curvature of the outer wall of the tube blank 4. The arc plate 32 is used to clamp the corresponding tube blank 4 or traction tube 6.

[0034] A transmission gear 17 is rotatably mounted on one side of the adjusting seat 8. (See reference) Figure 7A connecting gear ring 18 is rotatably mounted on one side of the adjusting seat 8. The connecting gear ring 18 meshes with the transmission gear 17. A second motor 22 is mounted on one side of the adjusting seat 8. The output end of the second motor 22 is connected to the transmission gear 17 via a rotating shaft. The second motor 22 can drive the transmission gear 17 to rotate. A rotating cylinder 19 is fixedly sleeved on one side of the connecting gear ring 18. A first cutter 20 is fixedly connected to one side of the rotating cylinder 19. The first cutter 20 is used for circumferential cutting and tearing of waste materials. A second cutter 21 is fixedly connected to the outside of the connecting seat 9.

[0035] The second cutter 21 is fixed relative to the intermediate tube 5. The second cutter 21 is used to cut and tear waste material that moves axially relative to the intermediate tube 5. The first cutter 20 rotates in conjunction with the second cutter to crush the waste material. A heating assembly 33 is provided on one side of the shaping component 3. The heating assembly can be a resistance wire heating assembly. The heating assembly 33 is used to preheat one end of the traction tube 6. (See reference...) Figure 2 A collection box is fixedly installed on one side of the bottom of the extrusion component 2.

[0036] During the start-up phase of the extruder extruding the internal spiral flow channel PE water pipe, the intermediate pipe 5 is pre-fitted onto the outside of the support block 15 which is in a contracted state. The No. 1 motor 16 starts and drives the adjusting plate 11 to rotate relative to the connecting seat 9. The adjusting plate 11 drives the adjusting groove 12 to rotate, changing the corresponding position of the adjusting groove 12 and the guide groove 10. The inner wall of the adjusting groove 12 abuts against the adjusting rod 13, pushing the adjusting rod 13 to move along the guide groove 10 and approach the intermediate pipe 5 until the adjusting rod 13 cooperates with the connecting block 14 to drive the support block 15 to contact the inner wall of the intermediate pipe 5, thus completing the clamping of the intermediate pipe 5. The traction pipe 6 is then passed through the shaping component 3 and connected to the traction component of the extruder. The end of the traction pipe 6 is preheated by the heating component 33.

[0037] After the traction tube 6 is preheated, the traction assembly moves the traction tube 6 a rated distance and approaches the extrusion assembly 2, so that the heated part extends out of the heating assembly 33. The sliding seat 7 is driven to approach the extrusion assembly 2. The sliding seat 7 drives the moving plate 34 to move. The moving plate 34 drives the adjusting seat 8 to move. The adjusting seat 8 drives the connecting seat 9 to move closer to the extrusion assembly 2. The connecting seat 9, together with the adjusting plate 11, adjusting rod 13, and connecting block 14, drives the support block 15 to approach the extrusion assembly 2, thereby driving the intermediate tube 5 to approach the extrusion assembly 2 until the intermediate tube 5 is about to contact the die head of the extrusion assembly 2, leaving a gap between the intermediate tube 5 and the extrusion assembly 2. The tube blank 4 is extruded from the die head of the extrusion assembly 2. The tube blank 4 is sleeved on the outside of the intermediate tube 5 and moves relative to the intermediate tube 5. The tube blank 4 contacts the intermediate tube 5 to heat the intermediate tube 5, thereby ensuring that the intermediate tube 5 is heated evenly while controlling the heating temperature of the intermediate tube 5, and avoiding the intermediate tube 5 from becoming too hot and collapsing.

[0038] Next, the second motor 22 drives the transmission gear 17 to rotate, which in turn drives the connecting gear ring 18 to rotate. The connecting gear ring 18 drives the rotating cylinder 19 to rotate, which in turn drives the first cutter 20 to rotate. The rotating first cutter 20, in conjunction with the second cutter 21, crushes the waste material. The waste material is thrown off by the rotating cylinder 19 and falls into the collection box. When the qualified tube blank 4 is extruded from the extrusion assembly 2 and completely fitted onto the intermediate tube 5, the driving sliding seat 7 moves, which drives the support block 15 to move. This causes the support block 15 to move the intermediate tube 5 relative to the tube blank 4, so that part of the intermediate tube 5 extends out of the tube blank 4.

[0039] At this time, the moving speed of the adjusting sliding seat 7 is matched with the basic speed of the tube blank 4. At this time, the electromagnet 31 corresponding to the area of ​​the tube blank 4 is activated. The activation of the electromagnet 31, in conjunction with the corresponding permanent magnet 30, drives the corresponding sliding rod 29 to extend out of the guide cylinder 28. The sliding rod 29 drives the arc plate 32 to move. The arc plates 32 on both sides of the tube blank 4 clamp the tube blank 4. At the same time, in conjunction with the intermediate tube 5, the tube blank 4 is restricted from transitional deformation during clamping to avoid wrinkles that would affect subsequent traction. At this time, the first motor 16 drives the support block 15 to reset, removes the clamping and fixing of the intermediate tube 5 by the support block 15, drives the adjusting seat 8 to move relative to the sliding seat 7 in the axial direction of the tube blank 4, and then drives the moving plate 34 to move the adjusting seat 8 in the radial direction of the tube blank 4 to avoid the area where the intermediate tube 5 and the traction tube 6 are connected, thus completing the avoidance.

[0040] Next, when the intermediate tube 5 moves to a point where it is partially fitted inside the traction tube 6, the traction assembly drives the traction tube 6 and the tube blank 4 to move synchronously. The electromagnet 31 corresponding to the traction tube 6 is activated, driving several arc-shaped plates 32 to contact the outer wall of the corresponding traction tube 6, thus fitting the traction tube 6 onto the intermediate tube 5. This completes the connection between the traction tube 6, the tube blank 4, and the intermediate tube 5, all of which have a higher temperature than the intermediate tube 5. This ensures a stable relative temperature difference between the intermediate tube 5, the traction tube 6, and the tube blank 4. Furthermore, by placing the intermediate tube 5 at the extrusion position of the tube blank 4, the freshly extruded tube blank 4 can be directly fitted onto the outside of the intermediate tube 5. This allows the intermediate tube to simultaneously form an internal support and a common connection between the tube blank 4 and the traction tube 6. This ensures the stability of the shape of the tube blank 4 when it is clamped and compressed, thereby ensuring the relative temperature during bonding, i.e., ensuring the magnitude of the pressure applied at the corresponding temperature, as well as ensuring the area of ​​the bonding region and the cross-sectional shape of each tube, ensuring the stability of the bonding and the stability of the traction operation. Subsequently, the electromagnets 31 are de-energized, and the traction assembly independently completes the subsequent traction of the tube blank.

[0041] Example 2, as Figures 1-7Based on implementation one, a fixed cylinder 23 is fixedly connected to one side of the adjusting seat 8. An impeller 24 is provided inside the fixed cylinder 23. The impeller 24 is connected to the transmission gear 17 in a coaxial manner through a rotating shaft. That is, the impeller 24 and the transmission gear 17 rotate synchronously and their axes are collinear. An air inlet is opened on one side of the fixed cylinder 23. An air outlet pipe 25 is fixedly connected to the other side of the fixed cylinder 23. A sealing plate 26 is fixedly connected to one side of the connecting seat 9. The sealing plate 26 is an annular plate. One end of the air outlet pipe 25 extends out of the sealing plate 26 and is located on the side of the sealing plate 26 away from the connecting seat 9.

[0042] During the traction docking process, when the intermediate tube 5 is fitted onto the support block 15, its side wall contacts the sealing plate 26. The sealing plate 26, the connecting seat, and the intermediate tube 5 form a cavity with the opening of the intermediate tube 5. Then, when the waste material is extruded and fitted onto the outside of the intermediate tube 5, the second motor 22 drives the transmission gear 17 to rotate while simultaneously driving the impeller 24 to rotate. The impeller 24 rotates and blows out airflow, forming a relatively high pressure. The high-pressure gas enters the inside of the intermediate tube 5 through the outlet pipe 25. From the inside of the intermediate tube 5, it passes through the gap between the side wall of the intermediate tube 5 and the die head of the extrusion assembly 2, and enters the gap between the tube blank 4 and the intermediate tube 5, thereby forming a "gas film". This reduces the possibility of the waste material of the tube blank 4 sticking to the intermediate tube 5, further improving the reliability of the extruder.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipe extruder for producing PE water pipes with an internal spiral flow channel, comprising a worktable (1) and an intermediate pipe (5), wherein an extrusion assembly (2) is fixedly disposed on one side of the top of the worktable (1), characterized in that, A sliding seat (7) is slidably provided on one side of the top of the workbench (1). A clamping and pressing mechanism is provided on one side of the sliding seat (7). A moving plate (34) is slidably provided on one side of the top of the sliding seat (7). An adjusting seat (8) is slidably provided on one side of the moving plate (34). A positioning mechanism is provided on the top of the adjusting seat (8). The positioning mechanism is used to position the intermediate tube (5). A shearing mechanism is provided on the top of the adjusting seat (8). The sliding seat (7), the moving plate (34) and the adjusting seat (8) can all be driven by the corresponding driving components to move horizontally in a straight line to adjust the position of the positioning mechanism and the clamping and pressing mechanism, so that the intermediate tube (5) moves closer to the extrusion component (2) and contacts the waste of the tube blank (4). The shearing mechanism is used to shear and remove the waste. The intermediate tube (5) is used to simultaneously sleeve and bond with the tube blank (4) and the traction tube (6).

2. The pipe extruder for producing PE water pipes with an internal spiral flow channel according to claim 1, characterized in that, The positioning mechanism includes a connecting seat (9), which is fixedly connected to an adjusting seat (8). A plurality of guide grooves (10) are provided on one side of the connecting seat (9). An adjusting plate (11) is rotatably connected to one side of the connecting seat (9). An adjusting groove (12) is provided on one side of the adjusting plate (11). An adjusting rod (13) is slidably sleeved on the inner side of the adjusting groove (12). A support block (15) is fixedly connected to one side of the connecting block (14). A motor (16) is fixedly installed on one side of the connecting seat (9).

3. The pipe extruder for producing PE water pipes with an internal spiral flow channel according to claim 2, characterized in that, The adjustment groove (12) is set as an arc-shaped through groove and the number is adapted to the number of guide grooves (10). The position of the adjustment groove (12) corresponds to the position of the guide groove (10). The distance from different positions of the adjustment groove (12) to the rotation center of the adjustment disk (11) is different. The adjustment rod (13) is slidably sleeved with the guide groove (10).

4. The pipe extruder for producing PE water pipes with an internal spiral flow channel according to claim 1, characterized in that, The shearing mechanism includes a transmission gear (17), which is rotatably mounted on one side of the adjusting seat (8). A connecting gear ring (18) is rotatably mounted on one side of the adjusting seat (8). The connecting gear ring (18) meshes with the transmission gear (17). A second motor (22) is mounted on one side of the adjusting seat (8). The output end of the second motor (22) is connected to the transmission gear (17) via a rotating shaft. The second motor (22) can drive the transmission gear (17) to rotate. A rotating cylinder (19) is fixedly sleeved on one side of the connecting gear ring (18). A first cutter (20) is fixedly connected to one side of the rotating cylinder (19). A second cutter (21) is fixedly connected to the outside of the connecting seat (9).

5. The pipe extruder for producing PE water pipes with an internal spiral flow channel according to claim 1, characterized in that, The clamping and pressing mechanism includes a connecting plate (27), which is fixedly connected to the sliding seat (7). The inner side of the connecting plate (27) is provided with a plurality of pressing components. The pressing components include a guide cylinder (28), and a sliding rod (29) is slidably sleeved on the inner side of the guide cylinder (28). One end of the sliding rod (29) is fixedly connected to an arc plate (32).

6. The pipe extruder for producing PE water pipes with an internal spiral flow channel according to claim 5, characterized in that, The sliding rod (29) is fixedly provided with a permanent magnet (30) at one end inside the guide cylinder (28). An electromagnet (31) is fixedly provided on one side of the guide cylinder (28). A spring is movably sleeved on one side inside the guide cylinder (28). The force between the electromagnet (31) and the permanent magnet (30) is a repulsive force and the magnitude of the repulsive force is greater than the magnitude of the spring force. The curvature of the inner arc surface of the arc plate (32) is adapted to the curvature of the outer wall of the tube blank (4).

7. The pipe extruder for producing PE water pipes with an internal spiral flow channel according to claim 4, characterized in that, A fixed cylinder (23) is fixedly connected to one side of the adjusting seat (8). An impeller (24) is provided on the inner side of the fixed cylinder (23). The impeller (24) is connected to the transmission gear (17) in a coaxial manner through a rotating shaft. An air inlet is provided on one side of the fixed cylinder (23). An air outlet pipe (25) is fixedly connected to the other side of the fixed cylinder (23). A sealing plate (26) is fixedly connected to one side of the connecting seat (9).

8. The pipe extruder for producing PE water pipes with an internal spiral flow channel according to claim 1, characterized in that, A shaping component (3) is fixedly installed on one side of the top of the workbench (1), a heating component (33) is installed on one side of the shaping component (3), and a collection box is fixedly installed on one side of the bottom of the extrusion component (2).

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