PPR pipe production line

Abstract

The invention belongs to the technical field of pipe production, and particularly discloses a PPR pipe production line which comprises a machining equipment body, a supporting table is arranged at the front end of the machining equipment body, the machining equipment body comprises a water removal mechanism, and the water removal mechanism is located in front of the machining equipment body. And the water removal mechanism is arranged on the surface of the supporting table and comprises a moving table, a water scraping mechanism is arranged at the middle end of the top of the moving table, and water blowing mechanisms are symmetrically installed on the two sides of the front end of the supporting table. The water removal mechanism is integrated on the supporting table, efficient removal of water on the surface of the pipe is achieved through the three-stage treatment process of adsorption, water scraping and water blowing, meanwhile, the device can also achieve automatic cleaning of the sponge block, the service life is prolonged, and secondary pollution is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe production, and specifically discloses a PPR pipe production line. Background Art

[0002] A PPR pipe production line is a complete set of automated equipment for producing PPR pipes, mainly used for manufacturing pipes in the fields of building water supply and drainage, heating, ventilation and air conditioning, industrial fluid transportation, etc. Due to its characteristics such as corrosion resistance, high temperature resistance, non-toxic and environmental protection, PPR pipes have become one of the most widely used plastic pipes at present. The PPR pipe production line mainly goes through processes such as raw material treatment, extrusion molding, cooling and shaping, traction and conveying, cutting to a fixed length, and finished product treatment. In the process of PPR pipe production, the efficient removal of moisture on the pipe surface is a key link to ensure the quality of subsequent processes.

[0003] In the existing PPR pipe production line, the water removal method for the water-cooled pipes is single, mostly using static adsorption or fixed-angle blowing. There are moisture residue blind spots, and it is difficult to completely remove the moisture on the entire circumferential surface of the pipe. The maintenance of the water removal components is difficult. For example, the sponge blocks used for adsorbing moisture are prone to accumulating impurities and blocking pores after use, resulting in a decline in adsorption performance. Traditional equipment often lacks an automatic cleaning mechanism and requires manual disassembly and cleaning, which is time-consuming and may cause secondary pollution. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a PPR pipe production line to solve the problems in the prior art that the water removal method for the water-cooled pipes is single, mostly using static adsorption or fixed-angle blowing, there are moisture residue blind spots, it is difficult to completely remove the moisture on the entire circumferential surface of the pipe, the maintenance of the water removal components is difficult, for example, the sponge blocks used for adsorbing moisture are prone to accumulating impurities and blocking pores after use, resulting in a decline in adsorption performance, and traditional equipment often lacks an automatic cleaning mechanism and requires manual disassembly and cleaning, which is time-consuming and may cause secondary pollution.

[0005] To achieve the above object, the present invention provides a PPR pipe production line, including a main processing device. A support platform is provided at the front end of the main processing device. The main processing device includes a water removal mechanism. The water removal mechanism is located in front of the main processing device and is arranged on the surface of the support platform. The water removal mechanism is used to remove the moisture on the surface of the pipe. The water removal mechanism includes a moving platform, which is slidably installed above the support platform. A water scraping mechanism is arranged in the middle of the top of the moving platform, and the water scraping mechanism is used to scrape the moisture on the surface of the pipe. Blowing mechanisms are symmetrically installed on both sides of the front end of the support platform. The blowing mechanism includes a positioning frame, which is fixedly installed on the surface of the support platform. A swinging plate is arranged on the top of the positioning frame. A positioning hole is formed in the end face of the swinging plate close to the pipe, and a blowing head is clamped and installed in the positioning hole. When the moving platform moves, it can control the swinging of the swinging plate. A water removal mechanism is arranged behind the support platform. The water removal mechanism includes a sponge block, which is used to adsorb the moisture on the surface of the pipe. When the moving platform moves, it can control the water removal mechanism to remove the moisture on the surface of the sponge block.

[0006] In the above technical solution, preferably, the water scraping mechanism includes two semi-circular blocks. A chute is formed on the surface of the moving platform. The two semi-circular blocks are respectively arranged on both sides of the pipe, and a slider is arranged at the bottom of the semi-circular block and is slidably installed in the chute. A circular ring is formed in the middle after the two semi-circular blocks are butted. The circular ring is movably sleeved on the surface of the pipe, and a silica gel ring is installed inside the circular ring, and the silica gel ring is movably arranged on the surface of the pipe.

[0007] In the above technical solution, preferably, a rotating column is arranged on the top of the positioning frame. The middle end of the swinging plate is fixedly installed on the surface of the rotating column. A clamping groove is formed at the end of the swinging plate far from the pipe, and a positioning column is arranged in the middle of the clamping groove. An L-shaped control plate is movably arranged in the middle of the positioning frame. An activity groove is formed at the top end of the L-shaped control plate, and the clamping groove is movably sleeved on the surface of the positioning column.

[0008] In the above technical solution, preferably, a tail plate is fixedly installed at the front end of the moving platform. The tail plate is movably installed between the two blowing mechanisms. A path groove is formed on the surface of the tail plate, and the path groove is arranged in a wavy shape. A light rod is fixedly installed at the bottom end of the L-shaped control plate, and the surface of the light rod is movably inserted into the path groove. A guiding column is fixedly installed on the surface of the support platform, and the surface of the light rod is movably sleeved on the surface of the guiding column.

[0009] In the above technical solution, preferably, a fixing plate is fixedly installed behind the support table. A through hole is provided through the top of the fixing plate. A second rotating gear ring is rotatably installed at the front end of the fixing plate. The second rotating gear ring is sleeved outside the through hole. Two extending strips are symmetrically installed at the front end of the second rotating gear ring through bolts. An arc-shaped plate is installed on the adjacent surfaces of the two extending strips through bolts. A sponge block is installed on the surface of the arc-shaped plate. The surface of the sponge block is close to the surface of the pipe.

[0010] In the above technical solution, preferably, a support frame is arranged directly below the extending strip. A stepping motor is arranged inside the support frame. A first gear is installed at the output end of the stepping motor. A third gear is rotatably installed on the surface of the fixing plate and below the second rotating gear ring. The top end of the third gear meshes with the second rotating gear ring. The first gear meshes with the bottom end of the third gear.

[0011] In the above technical solution, preferably, a water collecting frame is arranged on the top of the support frame. The water collecting frame is located between the extending strip and the stepping motor.

[0012] In the above technical solution, preferably, a moving plate is movably arranged between the fixing plate and the support table. A through hole is provided through the top of the moving plate. A first rotating ring is rotatably installed at the rear of the moving plate. The first rotating ring is sleeved outside the through hole. Two connecting strips are symmetrically installed at the rear of the first rotating ring through bolts. Auxiliary strips are installed above and below the connecting strips through bolts. A water scraping plate is installed on the end face of the auxiliary strip close to the fixing plate. The water scraping plate is arc-shaped and cooperates with the sponge block. Limiting grooves are provided above and below the extending strip. A limiting strip is installed on the surface of the connecting strip. The limiting strip is movably clamped in the limiting groove.

[0013] In the above technical solution, preferably, a cylinder is arranged inside the support table. The surface of the moving plate is fixedly connected to the rear end of the moving table. The output end of the cylinder is fixedly connected to the moving plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The water removal mechanism of this PPR pipe production line is integrated into the support table. Through a three-stage treatment process of adsorption, water scraping and water blowing, the efficient removal of water on the surface of the pipe is realized. Primary treatment: The sponge block rotates around the axis of the pipe with the second rotating gear ring, covering the entire circumferential surface, avoiding the blind spots of traditional static adsorption, and ensuring no dead angle in water adsorption; Secondary treatment: Two semi-circular blocks are butted to form a ring, and the internal silica gel ring clings to the surface of the pipe. The water droplets are scraped off by the linear movement of the moving table. The flexible material avoids scratching the pipe and is adaptable to different pipe diameters, with strong versatility; Tertiary treatment: The swinging plate drives the blowing head to swing back and forth, forming a fan-shaped blowing trajectory, covering different circumferential areas of the pipe, eliminating the blind spots of blowing at a fixed angle, and ensuring the complete removal of residual water. This is the tertiary treatment; The air cylinder is used as the only power source to drive the moving plate and the moving table to move synchronously, and at the same time link the wiper blade of the water removal mechanism, the semi-circular block of the water scraping mechanism and the swinging plate of the water blowing mechanism, realizing the full-process automation of adsorption, water scraping and blowing, reducing manual intervention and improving production efficiency; When the moving plate moves backward, the wiper blade rotates and translates synchronously with the first rotating ring. Its arc surface continuously squeezes the sponge block to scrape off the water and impurities in the pores. The sewage drips into the water collecting frame, realizing the automatic cleaning of the sponge block, extending its service life and avoiding secondary pollution. Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the main structure of the processing equipment of the present invention; Figure 2 It is a schematic diagram of the structure of the water removal mechanism of the present invention; Figure 3 For the present invention Figure 2 The enlarged view at A in; Figure 4 It is a schematic diagram of the structure of the water removal mechanism from another perspective of the present invention; Figure 5 For the present invention Figure 4 The enlarged view at B in; Figure 6 It is a schematic diagram of the structure of the water removal mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the water removal mechanism from another perspective of the present invention; Figure 8 For the present invention Figure 7 The enlarged view at C in; Figure 9 It is a schematic diagram of the bottom structure of the water removal mechanism of the present invention.

[0016] In the figure: 1. Main body of the processing equipment; 2. Support table; 3. Moving table; 4. Water scraping mechanism; 5. Water blowing mechanism; 6. Water removing mechanism; 7. Slide groove; 8. Semi-circular block; 9. Silicone ring; 10. Tail plate; 11. Path groove; 12. Positioning frame; 13. Swing plate; 14. Positioning hole; 15. Air blowing head; 16. Clamping groove; 17. L-shaped control plate; 18. Activity groove; 19. Smooth rod; 20. Guide post; 21. Moving plate; 22. Fixed plate; 23. First rotating ring; 24. Second rotating gear ring; 25. Connecting strip; 26. Auxiliary strip; 27. Extending strip; 28. Arc-shaped plate; 29. Limit groove; 30. Sponge block; 31. Water scraping plate; 32. Limit strip; 33. Support frame; 34. Water collecting frame; 35. Stepper motor; 36. First gear; 37. Third gear. Detailed implementation manners

[0017] In order to be able to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0018] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed below.

[0019] As Figures 1-9 shown, a PPR pipe production line includes a main body 1 of the processing equipment. A support table 2 is provided at the front end of the main body 1 of the processing equipment. The main body 1 of the processing equipment includes a water removing mechanism. The water removing mechanism is located in front of the main body 1 of the processing equipment and is arranged on the surface of the support table 2. The water removing mechanism is used to remove the moisture on the surface of the pipe. The water removing mechanism includes a moving table 3. The moving table 3 is slidably installed above the support table 2. A water scraping mechanism 4 is provided in the middle of the top of the moving table 3. The water scraping mechanism 4 is used to scrape the moisture on the surface of the pipe. Blowing mechanisms 5 are symmetrically installed on both sides of the front end of the support table 2. The blowing mechanism 5 includes a positioning frame 12. The positioning frame 12 is fixedly installed on the surface of the support table 2. A swing plate 13 is provided at the top of the positioning frame 12. A positioning hole 14 is opened on the end face of the swing plate 13 close to the pipe. An air blowing head 15 is clamped and installed in the positioning hole 14. When the moving table 3 moves, it can control the swing plate 13 to swing. A water removing mechanism 6 is provided behind the support table 2. The water removing mechanism 6 includes a sponge block 30. The sponge block 30 is used to adsorb the moisture on the surface of the pipe. When the moving table 3 moves, it can control the water removing mechanism 6 to remove the moisture on the surface of the sponge block 30. The water removing mechanism of this PPR pipe production line is integrated on the support table 2. Through a three-stage treatment process of adsorption, water scraping and water blowing, efficient removal of the moisture on the surface of the pipe is achieved. At the same time, this device can also automatically clean the sponge block 30, extend its service life and avoid secondary pollution.

[0020] The wiper mechanism 4 includes two semi-circular blocks 8. A chute 7 is formed on the surface of the moving platform 3. The two semi-circular blocks 8 are respectively arranged on both sides of the pipe, and a slider is arranged at the bottom of the semi-circular block 8 and is slidably installed in the chute 7. After the two semi-circular blocks 8 are butted, a circular ring is formed in the middle. The circular ring is movably sleeved on the surface of the pipe. A silica gel ring 9 is installed inside the circular ring. The silica gel ring 9 is movably arranged on the surface of the pipe. The two semi-circular blocks 8 are slidably connected to the chute 7 on the surface of the moving platform 3 through the bottom sliders. When the moving platform 3 slides along the support platform 2, the two semi-circular blocks 8 can move along with the moving platform 3. At this time, the silica gel ring 9 installed inside the circular ring can directly scrape off the water droplets attached to the surface of the pipe, achieving efficient and flexible removal of the moisture on the surface of the pipe, while taking into account the versatility and reliability of the equipment.

[0021] A rotating column is arranged at the top of the positioning frame 12. The middle end of the swing plate 13 is fixedly installed on the surface of the rotating column. A clamping groove 16 is formed at one end of the swing plate 13 away from the pipe. A positioning column is arranged in the middle of the clamping groove 16. An L-shaped control plate 17 is movably arranged in the middle of the positioning frame 12. An activity groove 18 is formed at the top end of the L-shaped control plate 17. The clamping groove 16 is movably sleeved on the surface of the positioning column. By moving the L-shaped control plate 17 up and down, the positioning column can be pushed and pulled, so as to drive the swing plate 13 to swing. Finally, the blowing equipment outside the device can remove the moisture attached to the surface of the pipe through the blowing head 15. The reciprocating swing of the swing plate 13 makes the blowing head 15 form a fan-shaped blowing track, which can cover different circumferential areas of the pipe and eliminate the blind area of blowing at a fixed angle.

[0022] A tail plate 10 is fixedly installed at the front end of the moving platform 3. The tail plate 10 is movably installed between the two water blowing mechanisms 5. A path groove 11 is formed on the surface of the tail plate 10. The path groove 11 is arranged in a wavy shape. A light rod 19 is fixedly installed at the bottom end of the L-shaped control plate 17. The surface of the light rod 19 is movably inserted into the path groove 11. A guide post 20 is fixedly installed on the surface of the support platform 2. The surface of the light rod 19 is movably sleeved on the surface of the guide post 20. When the moving platform 3 slides along the support platform 2, the tail plate 10 is driven to move linearly synchronously. The wavy path groove 11 on the tail plate 10 cooperates with the light rod 19 at the bottom end of the L-shaped control plate 17. During the movement of the tail plate 10, the light rod 19 is squeezed by the inner wall of the path groove 11 and displaces in a direction perpendicular to the moving direction of the moving platform 3. The radial movement of the light rod 19 is restricted by the guide post 20, and it only slides along the axis direction of the guide post 20, thereby pushing the swing plate 13 to swing up and down.

[0023] A fixing plate 22 is fixedly installed at the rear of the support platform 2. A through hole is provided through the top of the fixing plate 22. A second rotating gear ring 24 is rotatably installed at the front end of the fixing plate 22. The second rotating gear ring 24 is sleeved outside the through hole. Two extending strips 27 are symmetrically installed at the front end of the second rotating gear ring 24 through bolts. An arc-shaped plate 28 is installed on the adjacent surfaces of the two extending strips 27 through bolts. A sponge block 30 is installed on the surface of the arc-shaped plate 28. The surface of the sponge block 30 is close to the surface of the pipe. When the second rotating gear ring 24 rotates, the two extending strips 27 fixed to its front end by bolts synchronously make a circular motion around the axis of the pipe, driving the arc-shaped plate 28 and the sponge block 30 to rotate around the surface of the pipe. The surface of the sponge block 30 always remains close to the pipe, continuously adsorbing the residual water on the surface of the pipe during the rotation process to achieve dynamic water removal. The sponge block 30 rotates with the second rotating gear ring 24 and can cover the entire circumferential surface of the pipe, avoiding the blind area of traditional static adsorption and ensuring that there is no dead angle in water adsorption. Moreover, the rotational motion enhances the relative friction between the sponge block and the pipe surface, improving the adsorption efficiency.

[0024] A support frame 33 is provided directly below the extending strip 27. A stepping motor 35 is arranged inside the support frame 33. An output end of the stepping motor 35 is installed with a first gear 36. A third gear 37 is rotatably installed on the surface of the fixing plate 22 and below the second rotating gear ring 24. The top end of the third gear 37 meshes with the second rotating gear ring 24. The bottom end of the first gear 36 meshes with the third gear 37. After the stepping motor 35 is started, the output shaft drives the first gear 36 to rotate. The first gear 36 meshes with the bottom end of the third gear 37 to drive the third gear 37 to rotate. The top end of the third gear 37 meshes with the second rotating gear ring 24, thereby driving the second rotating gear ring 24 to rotate around the axis of the through hole of the fixing plate 22. When the second rotating gear ring 24 rotates, the extending strips 27 fixed to its front end by bolts synchronously make a circular motion, and the two extending strips 27 drive the arc-shaped plate 28 and the sponge block 30 to rotate around the axis of the pipe, making the sponge block 30 fit the surface of the pipe for rotational wiping.

[0025] A water collecting frame 34 is arranged at the top of the support frame 33. The water collecting frame 34 is located between the extending strip 27 and the stepping motor 35. During the process of the sponge block 30 adsorbing the water on the surface of the pipe, the water collecting frame 34 is located directly below the sponge block 30 and can collect the dripping water in a timely manner. At the same time, the water collecting frame 34 also plays a role in protecting the stepping motor 35.

[0026] A moving plate 21 is movably arranged between a fixing plate 22 and a support table 2. A through hole is arranged through the top of the moving plate 21. A first rotating ring 23 is rotatably installed behind the moving plate 21. The first rotating ring 23 is sleeved outside the through hole. Two connecting bars 25 are symmetrically installed behind the first rotating ring 23 through bolts. Auxiliary bars 26 are installed above and below the connecting bars 25 through bolts. A water scraping plate 31 is installed on the end face of the auxiliary bar 26 close to the fixing plate 22. The water scraping plate 31 is arranged in an arc shape and cooperates with a sponge block 30. Limit grooves 29 are opened above and below the protruding strip 27. A limit strip 32 is installed on the surface of the connecting bar 25. The limit strip 32 is movably clamped in the limit groove 29. When the moving plate 21 moves towards the fixing plate 22, the first rotating ring 23 behind it will be driven to approach the sponge block 30 synchronously. The first rotating ring 23 is clamped with the limit groove 29 of the protruding strip 27 through the limit strip 32 and is forced to rotate synchronously with the second rotating gear ring 24. Therefore, while the water scraping plate 31 translates with the moving plate 21, it makes a circular motion around the axis of the pipe, forming a composite motion trajectory of translation and rotation. When the moving plate 21 approaches the fixing plate 22, the arc surface of the water scraping plate 31 gradually fits the surface of the sponge block 30. Due to their synchronous rotation, the arc surface of the water scraping plate 31 continuously squeezes circumferentially along the sponge block 30, and the water and impurities in the pores of the sponge block 30 are scraped off in a specific direction. The water will drip into the water collecting frame 34 below. The clamping structure of the limit strip 32 and the limit groove 29 ensures that the rotation speeds of the first rotating ring 23 and the second rotating gear ring 24 are the same, avoiding misalignment between the water scraping plate 31 and the sponge block 30 caused by a speed difference, and ensuring that the water scraping action accurately acts on the effective area of the sponge block 30. At the same time, since the sponge block 30 is a flexible product, the surface of the water scraping plate 31 does not contact the pipe, and the water scraping plate 31 will not cause scratches on the surface of the pipe during operation.

[0027] A cylinder is arranged inside the support table 2. The surface of the moving plate 21 is fixedly connected to the rear end of the moving table 3. The output end of the cylinder is fixedly connected to the moving plate 21. As a power source, the cylinder moves forward or backward through its output end and directly drives the moving plate 21 fixedly connected to it to move in a straight line along the guiding structure of the support table 2. The moving plate 21 is fixedly connected to the rear end of the moving table 3 through a mechanical connection. Therefore, the moving table 3 moves synchronously with the moving plate 21, forming an overall linkage.

[0028] Working principle: First, when the cylinder drives the moving plate 21 to move backward, the moving plate 21 moves backward with the moving table 3, driving the first rotating ring 23 at the rear to move closer to the fixed plate 22. The first rotating ring 23 is clamped with the limiting groove 29 of the protruding strip 27 through the limiting strip 32 of the connecting strip 25, and is forced to rotate synchronously with the second rotating gear ring 24. While the wiper plate 31 moves backward horizontally with the moving plate 21, due to the clamping of the limiting strip 32 and the limiting groove 29, it rotates synchronously around the axis of the pipe, forming a combined movement of translation and rotation. The arc surface of the wiper plate 31 gradually fits the surface of the sponge block 30, and continuously squeezes the pores of the sponge block 30 during rotation, scraping off the water and impurities therein. The sewage drips into the water collecting frame 34. During the process of the cylinder driving the moving plate 21 to move backward, the moving table 3 also moves backward. The two semi-circular blocks 8 move backward synchronously with the moving table 3 through the bottom sliders. The two semi-circular blocks 8 are butted to form a ring, and the internal silicone ring 9 closely adheres to the surface of the pipe. Through the linear movement of the moving table 3, the water droplets remaining on the surface of the pipe are scraped off. The silicone ring 9 contacts the pipe flexibly to avoid scratching the surface, and the ring structure adapts to pipes of different diameters, with strong versatility. Then, through the linkage of the tail plate 10 and the path groove 11, the tail plate 10 at the front end of the moving table 3 moves backward with the moving table 3. The wavy path groove 11 on its surface cooperates with the optical rod 19 at the bottom end of the L-shaped control plate 17. The wavy contour of the path groove 11 will squeeze the optical rod 19, causing it to slide up and down along the guide post 20, driving the swing plate 13 to swing reciprocally. The L-shaped control plate 17 pushes and pulls the swing plate 13 through the positioning post, causing it to swing in a fan shape around the rotating post, driving the air blowing head 15 to form a fan-shaped blowing trajectory. The external blowing device jets air to the surface of the pipe through the air blowing head 15 to blow off the remaining moisture. The swinging action eliminates the blind area of blowing at a fixed angle, achieving the effect of complete water removal. The pipe passes through the water removal mechanism 6, the wiper mechanism 4, and the water blowing mechanism 5 in sequence, realizing the efficient removal of moisture on the surface of the pipe.

[0029] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A PPR pipe production line, comprising a main processing equipment body (1), characterized in that, A support platform (2) is provided at the front end of the main body (1) of the processing equipment. The main body (1) of the processing equipment includes a water removal mechanism. The water removal mechanism is located in front of the main body (1) of the processing equipment and is arranged on the surface of the support platform (2). The water removal mechanism is used to remove the moisture on the surface of the pipe. The water removal mechanism includes a moving platform (3). The moving platform (3) is slidably installed above the support platform (2). A water scraping mechanism (4) is arranged in the middle of the top of the moving platform (3). The water scraping mechanism (4) is used to scrape the moisture on the surface of the pipe. Blowing mechanisms (5) are symmetrically installed on both sides of the front end of the support platform (2). The blowing mechanism (5) includes a positioning frame (12). The positioning frame (12) is fixedly installed on the surface of the support platform (2). A swing plate (13) is arranged on the top of the positioning frame (12). A positioning hole (14) is formed in the end face of the swing plate (13) close to the pipe. A blowing head (15) is clamped and installed in the positioning hole (14). When the moving platform (3) moves, it can control the swing plate (13) to swing. A water removal mechanism (6) is arranged behind the support platform (2). The water removal mechanism (6) includes a sponge block (30). The sponge block (30) is used to adsorb the moisture on the surface of the pipe. When the moving platform (3) moves, it can control the water removal mechanism (6) to remove the moisture on the surface of the sponge block (30).

2. The PPR pipe production line according to claim 1, characterized in that, The water scraping mechanism (4) includes two semi-circular blocks (8). A chute (7) is formed on the surface of the moving platform (3). The two semi-circular blocks (8) are respectively arranged on both sides of the pipe. The bottom of the semi-circular block (8) is provided with a slider slidably installed in the chute (7). When the two semi-circular blocks (8) are butted, a circular ring is formed in the middle. The circular ring is movably sleeved on the surface of the pipe. A silica gel ring (9) is installed inside the circular ring. The silica gel ring (9) is movably arranged on the surface of the pipe.

3. A PPR pipe production line according to claim 1, characterized in that, A rotating column is arranged on the top of the positioning frame (12). The middle end of the swing plate (13) is fixedly installed on the surface of the rotating column. A clamping groove (16) is formed at the end of the swing plate (13) away from the pipe. A positioning column is arranged in the middle of the clamping groove (16). An L-shaped control plate (17) is movably arranged in the middle of the positioning frame (12). An activity groove (18) is formed at the top end of the L-shaped control plate (17). The clamping groove (16) is movably sleeved on the surface of the positioning column.

4. A PPR pipe production line according to claim 3, characterized in that, A tail plate (10) is fixedly installed at the front end of the moving platform (3). The tail plate (10) is movably installed between the two blowing mechanisms (5). A path groove (11) is formed on the surface of the tail plate (10). The path groove (11) is arranged in a wave shape. A light rod (19) is fixedly installed at the bottom end of the L-shaped control plate (17). The surface of the light rod (19) is movably inserted into the path groove (11). A guide post (20) is fixedly installed on the surface of the support platform (2). The surface of the light rod (19) is movably sleeved on the surface of the guide post (20).

5. A PPR pipe production line according to claim 1, characterized in that, A fixing plate (22) is fixedly installed behind the support table (2). A through hole is provided through the top of the fixing plate (22). A second rotating gear ring (24) is rotatably installed at the front end of the fixing plate (22). The second rotating gear ring (24) is sleeved outside the through hole. Two protruding strips (27) are symmetrically installed at the front end of the second rotating gear ring (24) by bolts. An arc-shaped plate (28) is installed on the adjacent surfaces of the two protruding strips (27) by bolts. A sponge block (30) is installed on the surface of the arc-shaped plate (28). The surface of the sponge block (30) is close to the surface of the pipe.

6. The PPR pipe production line according to claim 5, wherein, A support frame (33) is provided directly below the protruding strip (27). A stepping motor (35) is provided inside the support frame (33). A first gear (36) is installed at the output end of the stepping motor (35). A third gear (37) is rotatably installed on the surface of the fixing plate (22) and below the second rotating gear ring (24). The top end of the third gear (37) meshes with the second rotating gear ring (24). The first gear (36) meshes with the bottom end of the third gear (37).

7. A PPR pipe production line according to claim 6, characterized in that, A water collecting frame (34) is provided at the top of the support frame (33). The water collecting frame (34) is located between the protruding strip (27) and the stepping motor (35).

8. A PPR pipe production line according to claim 5, characterized in that, A moving plate (21) is movably arranged between the fixing plate (22) and the support table (2). A through hole is provided through the top of the moving plate (21). A first rotating ring (23) is rotatably installed at the rear of the moving plate (21). The first rotating ring (23) is sleeved outside the through hole. Two connecting strips (25) are symmetrically installed at the rear of the first rotating ring (23) by bolts. Auxiliary strips (26) are installed above and below the connecting strips (25) by bolts. A water scraping plate (31) is installed on the end face of the auxiliary strip (26) close to the fixing plate (22). The water scraping plate (31) is arranged in an arc shape, and the water scraping plate (31) cooperates with the sponge block (30). Limiting grooves (29) are provided above and below the protruding strip (27). A limiting strip (32) is installed on the surface of the connecting strip (25). The limiting strip (32) is movably clamped in the limiting groove (29).

9. A PPR pipe production line according to claim 8, characterized in that, A cylinder is provided inside the support table (2). The surface of the moving plate (21) is fixedly connected to the rear end of the moving table (3). The output end of the cylinder is fixedly connected to the moving plate (21).

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