Extruder for water pipe processing

Abstract

The invention relates to the technical field of water pipe machining, and particularly discloses a water pipe machining extruder which comprises a device table, an extruder body is installed on the device table, an annular frame is coaxially and correspondingly arranged at the discharging end of the extruder body, an annular rack is coaxially and rotationally arranged on the annular frame, and a plurality of first supports are detachably installed on the annular rack; a telescopic mechanism is fixed to the first support, a positioning mechanism is controlled on the telescopic mechanism in a telescopic mode, a first driving mechanism used for driving the annular frame to move horizontally is arranged on the extruder body, a second driving mechanism used for driving the annular rack to rotate is arranged on the annular frame, and a plurality of second supports can be detachably installed on the annular rack. And a clamping mechanism is arranged on the second bracket. According to the invention, the working efficiency can be effectively improved, the manual operation is reduced, the possible safety and health hidden dangers are further reduced, and the stability of the process standard can be effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of water pipe processing technology, and more particularly to an extruder for water pipe processing. Background Technology

[0002] The extruder is the core equipment in water pipe production. It is mainly used to process plastic raw materials into various types of pipes through processes such as heating, plasticizing, extrusion, and cooling. The plastic raw materials include PE, PPR, and PVC. The working principle of the extruder is generally based on the mechanical conveying and thermoplasticizing action of the screw, combined with subsequent molding processes to complete the pipe manufacturing.

[0003] In the initial startup phase of a water pipe extrusion production line, the initial pipe blank extruded from the extruder die typically requires manual intervention. This includes: first, cleaning any remaining unplasticized material from the extrusion end; then, manually guiding the cleaned pipe blank into the inner hole of a vacuum sizing sleeve to connect with the subsequent automatic traction device for continuous production. This manual operation presents significant safety and health hazards: firstly, the high-temperature melt (typically exceeding 170°C) can easily cause burns to operators; secondly, PVC material may decompose at high temperatures, releasing hydrogen chloride gas, posing a potential hazard to the respiratory system and health of on-site personnel.

[0004] Therefore, in order to solve such problems, we propose an extruder for water pipe processing. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and to propose an extruder for water pipe processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An extruder for processing water pipes includes a device platform on which an extruder body is mounted. The discharge end of the extruder body is coaxially corresponding to an annular frame. An annular rack is coaxially rotatably mounted on the annular rack. Multiple first supports are detachably mounted on the annular rack. A telescopic mechanism is fixed on the first support. A positioning mechanism is used to control the telescopic movement of the telescopic mechanism. The extruder body is provided with a first driving mechanism for driving the ring frame to move horizontally, and the ring frame is provided with a second driving mechanism for driving the ring rack to rotate. Multiple second supports can also be detachably installed on the ring rack, and the second supports are provided with clamping mechanisms.

[0007] Preferably, the outlet end of the extruder body is provided with a vacuum sizing box body, the outlet end of the extruder body is used to extrude high-temperature soft tube blanks, and the corresponding end of the vacuum sizing box body can extend a shaped cold tube.

[0008] Preferably, the telescopic mechanism includes a first electric telescopic rod, which is fixedly connected to a first bracket. The telescopic end of the first electric telescopic rod is fixed with a mounting seat, and the orientation of the telescopic end of the first electric telescopic rod is offset from the center of the ring frame.

[0009] Preferably, the positioning mechanism includes a bent plate fixedly connected to the mounting base. One end of the bent plate is bent toward the extruder body, and the edge of this end is provided with a scraper head. The scraper head is inclined and corresponding to the end face of the mounting base.

[0010] Preferably, the positioning mechanism further includes a second electric telescopic rod fixedly connected to the mounting base. The telescopic end of the second electric telescopic rod is fixed with a positioning plate. The positioning plate is bent, and one edge of the positioning plate is flush with one end of the bent plate corresponding to the blade head. This end of the positioning plate is inclined towards the blade head.

[0011] Preferably, the positioning plate is made of metal, can be bent elastically, and has springs connected to both ends, with the springs located at the bends of the positioning plate.

[0012] Preferably, the inner ring areas of the annular frame and the annular toothed rack are the same, and the inner ring areas of both the annular frame and the annular toothed rack are larger than the cross-sectional area of ​​the end face of the extruder body at the discharge end.

[0013] Preferably, the first drive mechanism includes two electric push rods, which are symmetrically fixedly installed on both sides of the extruder body. The two electric push rods are horizontally arranged, and the two telescopic ends of the two electric push rods are fixedly connected to the drive ring frame.

[0014] Preferably, the second driving mechanism includes a drive motor, a support is fixed to the outer edge of the ring frame, the drive motor is fixedly mounted on the support, and a gear is coaxially fixed to the drive motor, the gear meshing with the ring rack.

[0015] Preferably, the clamping mechanism includes a second bracket, which can be detachably and fixedly connected to an annular rack. A U-shaped frame is fixed on the second bracket. A threaded rod is provided on one side of the U-shaped frame. The threaded rod passes through the U-shaped frame and is rotatably connected to a U-shaped clamping block. The two ends of the U-shaped clamping block slide through the other end of the U-shaped frame. An air suction head or a high-pressure air gun head can be clamped between the U-shaped clamping block and the U-shaped frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting an annular frame corresponding to the extruder body and by setting adjustable bending plates and positioning plates on the annular frame, can replace manual cleaning and traction operations, effectively reducing manual operation and thus effectively reducing the safety and health hazards that may exist in manual operation. At the same time, it can also effectively improve work efficiency and effectively ensure the stability of process standards.

[0017] 2. This invention can be used for auxiliary operation in equipment production and maintenance. It can achieve efficient close-range exhaust gas extraction during production, effectively reducing health risks to personnel. It can also achieve uniform cleaning operation during maintenance, effectively improving work efficiency. Attached Figure Description

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

[0019] Figure 1 This is the front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is an isometric view of the present invention; Figure 4 This is a schematic diagram of the structure of the bending plate and positioning plate of the present invention; Figure 5 This is a schematic diagram of the structure of the second support of the present invention; Figure 6 for Figure 5 A magnified view of a section at point A in the middle; Figure 7 This is a schematic diagram of the scraper head of the present invention during a cleaning operation; Figure 8 This is a schematic diagram of the structure for performing the extrusion operation on the positioning plate of the present invention.

[0020] In the diagram: 1. Device platform; 2. Extruder body; 3. Ring frame; 4. Ring rack; 5. First support; 6. Second support; 7. Vacuum sizing box body; 8. High-temperature soft tube blank; 9. Shaped cold tube; 10. First electric telescopic rod; 11. Mounting base; 12. Bending plate; 13. Shovel head; 14. Second electric telescopic rod; 15. Positioning plate; 16. Spring; 17. Electric push rod; 18. Drive motor; 19. Gear; 20. Equipment platform; 21. U-shaped frame; 22. Threaded rod; 23. U-shaped clamping block. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figures 1-8 An extruder for water pipe processing includes a platform 1 on which an extruder body 2 is mounted. The platform 1 serves to stably mount and set the extruder body 2. The extruder body 2 of this application can be a single-screw / twin-screw extruder of model DWC-2000, suitable for HDPE / PP / PVC materials, with an extrusion capacity of 500–900KG. A ring frame 3 is coaxially corresponding to the discharge end of the extruder body 2. A ring-shaped rack 4 is coaxially rotatably mounted on the ring frame 3, i.e., the ring-shaped rack 4 is connected to the ring frame 3 through a ring-shaped ball bearing turntable. The ring-shaped rack 4 can rotate about the center of the ring frame 3. Multiple first supports 5 are detachably mounted on the ring-shaped rack 4. A telescopic mechanism is fixed on the first support 5, and a positioning mechanism controls the telescopic movement. Figure 3 , Figure 7 and Figure 8 All of them contain partial schematic diagrams of the extruder body 2.

[0023] The extruder body 2 is provided with a first drive mechanism for driving the ring frame 3 to move horizontally, the ring frame 3 is provided with a second drive mechanism for driving the ring rack 4 to rotate, and the ring rack 4 can also be detachably mounted with multiple second supports 6, and the second supports 6 are provided with clamping mechanisms.

[0024] As a technical optimization of the present invention, a vacuum sizing box body 7 is provided at the discharge end of the extruder body 2, and the vacuum sizing box body 7 is supported by the equipment platform 20. It can be an existing device, model GC-DJX160, capable of vacuum sizing for 120mm pipe diameter. The discharge end of the extruder body 2 is used to extrude a high-temperature soft tube blank 8. When the extruder body 2 is started, it needs to be preheated to extrude any residual plasticized material before extrudeing the high-temperature soft tube blank 8, typically at a temperature higher than 170°C. The corresponding end of the vacuum sizing box equipment body 7 can extend a shaping cold tube 9. The shaping cold tube 9 is a cooled and formed pipe, which is used to connect with the high-temperature soft tube blank 8. That is, the high-temperature soft tube blank 8 is fitted onto the shaping cold tube 9. The diameter of the high-temperature soft tube blank 8 is larger than that of the shaping cold tube 9. After fitting, the end of the high-temperature soft tube blank 8 is pinched into a cone shape (the cone angle is about 30 degrees), so that the end of the high-temperature soft tube blank 8 is tapered and attached to the surface of the shaping cold tube 9. Then, by moving the shaping cold tube 9, the high-temperature soft tube blank can be connected to the high-temperature soft tube blank 8. The high-temperature soft tube blank 8 is inserted into the inner hole of the sizing sleeve of the vacuum sizing box equipment body 7 (the diameter of the inner hole of the sizing sleeve is 0.5–1 mm larger than the diameter of the shaped cold tube 9). Then, the vacuum pump is turned on simultaneously, and the lubricating brush is dipped in water to apply water to the outer wall of the high-temperature soft tube blank 8 to reduce frictional resistance. This guides the high-temperature soft tube blank 8 to be pushed horizontally through the sizing sleeve. After insertion, the vacuum pump makes the high-temperature soft tube blank 8 adhere to the inner wall of the sizing sleeve. Then, the system can be switched to fully automatic mode, and the tube passes through the spray water tank, traction machine, cutting machine, and turning rack / winding machine in sequence.

[0025] As a technical optimization of the present invention, the telescopic mechanism includes a first electric telescopic rod 10, which is fixedly connected to a first bracket 5. A mounting base 11 is fixed to the telescopic end of the first electric telescopic rod 10. The orientation of the telescopic end of the first electric telescopic rod 10 deviates from the center of the annular frame 3, that is, the telescopic end of the first electric telescopic rod 10 does not point towards the center of the annular frame 3. The first electric telescopic rod 10 can precisely control the telescopic movement of the mounting base 11.

[0026] As a technical optimization of the present invention, the positioning mechanism includes a bent plate 12 fixedly connected to the mounting base 11. One end of the bent plate 12 is bent towards the extruder body 2, and a scraper head 13 is provided on the edge of this end. The scraper head 13 is inclined and corresponding to the end face of the mounting base 11. The scraper head 13 faces the end of the extruder body 2 and can make parallel contact with the end of the extruder body 2. The scraper head 13 can perform cleaning and scraping treatment on the end of the extruder body 2 by moving.

[0027] As a technical optimization of the present invention, the positioning mechanism further includes a second electric telescopic rod 14 fixedly connected to the mounting base 11. A positioning plate 15 is fixed to the telescopic end of the second electric telescopic rod 14. The positioning plate 15 is bent, with one edge of the positioning plate 15 flush with one end of the corresponding scraper head 13 of the bent plate 12, and this end of the positioning plate 15 tilted towards the scraper head 13. The second electric telescopic rod 14 can precisely control the movement of the positioning plate 15. By controlling the movement of the positioning plate 15, the second electric telescopic rod 14 can change the distance between the positioning plate 15 and the bent plate 12, thereby enabling the positioning plate 15 and the bent plate 12 to cooperate and achieve a clamping and positioning effect. Furthermore, when the positioning plate 15 moves away from the bent plate 12, the scraper head 13 of the bent plate 12 can then perform normal scraping operations.

[0028] The first electric telescopic pole 10 and the second electric telescopic pole 14 are both existing telescopic drive devices, which can be set to be driven by an electric motor or pneumatically for telescopic extension and retraction.

[0029] As a technical optimization of the present invention, the positioning plate 15 is made of metal, such as stainless steel, i.e., the positioning plate 15 is in the form of a thin stainless steel sheet. The positioning plate 15 can be elastically bent and deformed, and springs 16 are connected to both ends of the positioning plate 15, with the springs 16 located at the bends of the positioning plate 15. The springs 16 increase the elastic restoring force of the positioning plate 15, ensuring the tensile strength of the positioning plate 15. The elastic bending of the positioning plate 15 provides a certain buffering effect, enabling it to provide cushioning protection when used in conjunction with the bending plate 12 for clamping operations. Furthermore, the positioning plate 15 is controlled by the second electric telescopic rod 14 to continuously approach the bending plate 12. The bottom of the positioning plate 15 first contacts the surface of the bending plate 12. Then, as the positioning plate 15 continuously approaches the bending plate 12, the positioning plate 15 bends accordingly and slides down along the surface of the bending plate 12. It can slide past the scraper head 13 to achieve the scraping operation of the scraper head 13. That is, when the scraper head 13 is scraping, there may be material adhering to the surface. The approach and squeezing of the positioning plate 15 can achieve the scraping of the adhering material.

[0030] As a technical optimization of the present invention, the inner ring areas of the annular frame 3 and the annular rack 4 are the same, and the inner ring areas of both the annular frame 3 and the annular rack 4 are larger than the cross-sectional area of ​​the discharge end of the extruder body 2. The annular frame 3 will not affect the use of the extruder body 2.

[0031] As a technical optimization of the present invention, the first driving mechanism includes two electric push rods 17, which are symmetrically fixedly installed on both sides of the extruder body 2. The two electric push rods 17 are horizontally arranged, and both telescopic ends of the two electric push rods 17 are fixedly connected to the driving ring frame 3. The two electric push rods 17 can achieve synchronous start-up through the existing control system, realizing the forward and backward movement of the ring frame 3. It is not limited to using two electric push rods 17; one electric push rod 17 can also be used, and the other can be a regular telescopic rod.

[0032] As a technical optimization of the present invention, the second driving mechanism includes a drive motor 18. A support is fixed to the outer edge of the ring frame 3, and the drive motor 18 is fixedly mounted on the support. A gear 19 is coaxially fixed to the drive motor 18, and the gear 19 meshes with the annular rack 4. The drive motor 18 controls the rotation of the gear 19, thereby controlling the rotation of the annular rack 4. Three or more positioning mechanisms can be provided on the annular rack 4. When the annular rack 4 rotates, it can first rotate 120 degrees clockwise and then 120 degrees counterclockwise. At this time, the movement trajectory of the three positioning mechanisms can satisfy the circumferential coverage effect. Furthermore, the 120-degree rotation will not affect the wiring of related equipment, such as the wiring of the first electric telescopic rod 10 and the second electric telescopic rod 14. The rotation angle should not exceed 180 degrees and can be set between 120 and 180 degrees.

[0033] As a technical optimization of the present invention, the clamping mechanism includes a second bracket 6, which is detachably and fixedly connected to an annular rack 4. A U-shaped frame 21 is fixed on the second bracket 6. A threaded rod 22 is provided on one side of the U-shaped frame 21. The threaded rod 22 is threaded through the U-shaped frame 21 and rotatably connected to a U-shaped clamping block 23. The two ends of the U-shaped clamping block 23 slide through the other end of the U-shaped frame 21. The U-shaped clamping block 23 and the U-shaped frame 21 can clamp and set an air suction head or a high-pressure air gun head. That is, by rotating the threaded rod 22, the threaded rod 22 can push the U-shaped clamping block 23 closer to the other end of the U-shaped frame 21, thereby clamping the object between them. Rubber pads can be provided on the opposite sides of the other ends of the U-shaped clamping block 23 and the U-shaped frame 21. The air suction head is used to connect with an existing exhaust system, which can achieve the effect of negative pressure adsorption of waste gas and discharge the waste gas through the exhaust system. The high-pressure air gun head connects to the existing air compressor, enabling high-pressure air blowing. High-pressure air blowing allows for cleaning during maintenance.

[0034] Those skilled in the art should understand from the above examples that the electrical equipment used in implementing the above technical solutions can be precisely controlled using a programmable PLC controller, and all such electrical equipment can be purchased from the market.

[0035] In the current invention, during the initial startup of the extruder body 2, the equipment is preheated. Afterwards, the initial tube blank extruded from the die head of the extruder body 2 typically requires manual intervention. This includes: first, cleaning the insufficiently plasticized material remaining at the extrusion end; then, manually pulling the cleaned tube blank and guiding it into the inner hole of the vacuum sizing sleeve to connect with the subsequent automatic traction device for continuous production. The present invention avoids this manual intervention. The cleaning of the insufficiently plasticized material remaining at the extrusion end is achieved by simultaneously controlling the horizontal movement of the ring frame 3 via two electric push rods 17, and controlling the scraper head 13 to make parallel contact with the extrusion end of the extruder body 2. During this process, the first electric telescopic rod 10 corresponding to the scraper head 13 can control the overall movement of the scraper head 13, ensuring the position of the scraper head 13 relative to the insufficiently plasticized material remaining at the extrusion end. Figure 7The scraper head 13 is positioned close to the extrusion end. The drive motor 18 then controls the gear 19 to rotate, which in turn rotates the annular rack 4. By controlling the scraper head 13 to rotate 120 or 130 degrees, multiple scraper heads 13 can scrape away any remaining unplasticized material at the extrusion end. Then, two electric push rods 17 control the multiple scraper heads 13 to separate from the extrusion end of the extruder body 2. The drive motor 18 then controls the multiple scraper heads 13 to rotate and reset. The two electric push rods 17 again control the multiple scraper heads 13 to make parallel contact with the extrusion end of the extruder body 2. Subsequently, the scraper heads 13 are controlled to rotate again for scraping. By repeating the above operations, the scraping of waste material can be performed repeatedly without manual removal, effectively ensuring safety.

[0036] Furthermore, during the aforementioned scraping operation, the corresponding second electric telescopic rod 14 controls the positioning plate 15 to move away from the bending plate 12, thereby ensuring that the scraper head 13 of the bending plate 12 can perform the scraping operation normally, ensuring that the positioning plate 15 does not affect the scraper head 13. After the scraping operation is completed, the second electric telescopic rod 14 again controls the positioning plate 15 to move closer to the bending plate 12. The bottom of the positioning plate 15 first contacts the surface of the bending plate 12, and then, as the positioning plate 15 moves closer to the bending plate 12, the positioning plate 15 bends accordingly and slides down along the surface of the bending plate 12, and can slide past the scraper head 13 to achieve the scraping operation on the scraper head 13. That is, after the scraper head 13 is scraped, there may be material adhering to its surface. The approach and squeezing of the positioning plate 15 can achieve the scraping of the adhering material, thus achieving a convenient and automatic cleaning effect, effectively improving efficiency, reducing labor, and improving safety.

[0037] Subsequently, this application enables the cleaned high-temperature soft tube blank 8 to be pulled and guided into the inner hole of the sizing sleeve of the vacuum sizing box equipment body 7. The specific operation is as follows: First, ensure that the positioning plate 15 is far away from the bending plate 12. Then, through the control of two electric push rods 17 and the corresponding first electric telescopic rod 10, the gap between the positioning plate 15 and the bending plate 12 is aligned with the edge of the high-temperature soft tube blank 8. Subsequently, the corresponding second electric telescopic rod 14 controls the movement of the positioning plate 15, bringing it closer to the bending plate 12. This allows the positioning plate 15 and the bending plate 12 to cooperate, achieving the effect of clamping and positioning the high-temperature soft tube blank 8. Figure 3 As shown, as the high-temperature soft tube blank 8 is extruded at a uniform speed, the two electric push rods 17 also extend at the same speed, causing the positioning plate 15 and the bending plate 12 to move synchronously, ensuring a synchronous clamping effect on the high-temperature soft tube blank 8. Then, the high-temperature soft tube blank 8 moves and is fitted onto the corresponding shaped cold tube 9. The positioning plate 15 and the bending plate 12 are then controlled to release their clamping of the high-temperature soft tube blank 8, and the positioning plate 15 and the bending plate 12 are controlled to come into contact with each other and move to the outside of the high-temperature soft tube blank 8, as shown. Figure 8As shown, the subsequent telescopic movement of the two electric push rods 17 and the first electric telescopic rod 10 causes the sides of multiple positioning plates 15 to continuously squeeze the high-temperature soft tube blank 8. Simultaneously, the rotation of the annular rack 4 is controlled, allowing the multiple positioning plates 15 to uniformly push around the outside of the high-temperature soft tube blank 8, ultimately shaping the end of the high-temperature soft tube blank 8 into a cone shape (with a cone angle of approximately 30 degrees). This ensures that the end of the high-temperature soft tube blank 8 is conically attached to the surface of the shaped cold tube 9. Then, by moving the shaped cold tube 9, the high-temperature soft tube blank 8 is pulled into the inner hole of the sizing sleeve of the vacuum sizing box equipment body 7. Simultaneously, the vacuum pump is activated, guiding the high-temperature soft tube blank 8 horizontally through the sizing sleeve. After insertion, the vacuum pump causes the high-temperature soft tube blank 8 to adhere to the inner wall of the sizing sleeve. The system can then switch to fully automatic mode, enabling normal pipeline production operations. The lifting operation requires no manual intervention, effectively improving work efficiency, ensuring stable process standards, and reducing safety risks for workers.

[0038] This application can be used for auxiliary operation in equipment production and maintenance. During normal production, two second supports 6 can be installed on the annular rack 4. The corresponding U-shaped clamping block 23 and U-shaped frame 21 can clamp and set the suction pipe head, which faces the center of the annular rack 4. The suction pipe head is connected to the existing exhaust system, which can achieve the effect of negative pressure adsorption of waste gas and exhaust the waste gas through the exhaust system. The annular rack 4 can rotate 180 degrees clockwise and 180 degrees counterclockwise, so that the suction effect is comprehensive. The whole can achieve efficient suction operation at close range and effectively reduce the pollution of waste gas discharge. During equipment maintenance, multiple second supports 6 can be installed, and a high-pressure air gun head can be clamped between the U-shaped clamping block 23 and the U-shaped frame 21. The high-pressure air gun head faces the center of the annular rack 4. The high-pressure air gun head is connected to the existing air compressor to achieve the effect of high-pressure air blowing. High-pressure air blowing can be used to perform air blowing cleaning operations during maintenance, such as light blowing on the surface of the screw of the extracted extruder body 2. The annular rack 4 can rotate 180 degrees clockwise and 180 degrees counterclockwise to achieve a comprehensive light blowing operation around the entire area, effectively improving work efficiency.

[0039] The above operations effectively reduce manual labor, thereby significantly lowering potential safety and health hazards associated with manual operations. For example, they reduce the risk of burns to operators from high-temperature molten metal and efficiently extract hydrogen chloride gas, effectively reducing potential harm to the respiratory system and health of on-site personnel. Simultaneously, they effectively improve work efficiency and ensure the stability of process standards.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An extruder for water pipe processing, comprising a device platform (1), characterized in that, The device platform (1) is equipped with an extruder body (2), and the discharge end of the extruder body (2) is coaxially corresponding to an annular frame (3). The annular frame (3) is coaxially rotatably provided with an annular rack (4). Multiple first supports (5) are detachably installed on the annular rack (4). A telescopic mechanism is fixed on the first support (5), and a positioning mechanism is provided for telescopic control on the telescopic mechanism. The extruder body (2) is provided with a first driving mechanism for driving the ring frame (3) to move horizontally, and the ring frame (3) is provided with a second driving mechanism for driving the ring rack (4) to rotate. The ring rack (4) can also be detachably mounted with multiple second supports (6), and the second supports (6) are provided with clamping mechanisms.

2. The extruder for water pipe processing according to claim 1, characterized in that, The extruder body (2) is provided with a vacuum sizing box body (7) at the discharge end. The discharge end of the extruder body (2) is used to extrude high-temperature soft tube blanks (8). The corresponding end of the vacuum sizing box body (7) can extend a shaping cold tube (9).

3. The extruder for water pipe processing according to claim 1, characterized in that, The telescopic mechanism includes a first electric telescopic rod (10), which is fixedly connected to the first bracket (5). The telescopic end of the first electric telescopic rod (10) is fixed with a mounting seat (11), and the orientation of the telescopic end of the first electric telescopic rod (10) deviates from the center of the ring frame (3).

4. The extruder for water pipe processing according to claim 3, characterized in that, The positioning mechanism includes a bent plate (12) fixedly connected to the mounting base (11). One end of the bent plate (12) is bent toward the extruder body (2), and the edge of this end is provided with a scraper head (13). The scraper head (13) is inclined to the end face of the mounting base (11).

5. An extruder for water pipe processing according to claim 4, characterized in that, The positioning mechanism also includes a second electric telescopic rod (14) fixedly connected to the mounting base (11). The telescopic end of the second electric telescopic rod (14) is fixed with a positioning plate (15). The positioning plate (15) is bent. One edge of the positioning plate (15) is flush with one end of the bent plate (12) corresponding to the blade head (13). This end of the positioning plate (15) is inclined toward the blade head (13).

6. An extruder for water pipe processing according to claim 1, characterized in that, The positioning plate (15) is made of metal and can be bent elastically. Springs (16) are connected to both ends of the positioning plate (15), and the springs (16) are set at the bends of the positioning plate (15).

7. An extruder for water pipe processing according to claim 1, characterized in that, The inner ring areas of the ring frame (3) and the annular rack (4) are the same, and the inner ring areas of the ring frame (3) and the annular rack (4) are both larger than the cross-sectional area of ​​the discharge end of the extruder body (2).

8. An extruder for water pipe processing according to claim 1, characterized in that, The first drive mechanism includes two electric push rods (17), which are symmetrically fixed on both sides of the extruder body (2). The two electric push rods (17) are horizontally arranged, and the two telescopic ends of the two electric push rods (17) are fixedly connected to the drive ring frame (3).

9. An extruder for water pipe processing according to claim 1, characterized in that, The second drive mechanism includes a drive motor (18), a support is fixed on the outer edge of the ring frame (3), the drive motor (18) is fixed on the support, and a gear (19) is fixed on the drive motor (18) coaxially, the gear (19) meshes with the ring rack (4).

10. An extruder for water pipe processing according to claim 1, characterized in that, The clamping mechanism includes a second bracket (6), which can be detachably and fixedly connected to the annular rack (4). A U-shaped frame (21) is fixed on the second bracket (6). A threaded rod (22) is provided on one side of the U-shaped frame (21). The threaded rod (22) is threaded through the U-shaped frame (21) and rotatably connected to a U-shaped clamping block (23). The two ends of the U-shaped clamping block (23) slide through the other end of the U-shaped frame (21). The U-shaped clamping block (23) and the U-shaped frame (21) can clamp and set the suction pipe head or high-pressure air gun head.

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