A polishing device for plastic pipe end treatment

Abstract

The application belongs to the technical field of intelligent manufacturing equipment industry, and mainly relates to a polishing equipment for plastic pipe orifice processing. The polishing equipment comprises a main frame body, the main frame body is rotationally connected with a rotating frame, the rotating frame is slidably connected with a sliding block, the rotating frame is rotationally and slidably connected with a sliding frame through the sliding block, the sliding frame is provided with a polishing module for polishing a pipeline, the sliding frame is slidably connected with a connecting frame, the sliding frame is rotationally connected with an adjusting screw which is threadedly connected with the connecting frame, the connecting frame is slidably connected with a supporting spring piece, a first elastic member is arranged between the connecting frame and the supporting spring piece, and the main frame body is provided with a driving module for driving the rotating frame to rotate. The polishing position of the pipeline is supported by the supporting spring piece, the shape of the polishing position of the pipeline is stabilized, the probability of heat deformation at the port of the pipeline to be polished is reduced, and the sealing strength during subsequent pipeline butt joint is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of intelligent manufacturing equipment industry, and particularly relates to a polishing equipment for plastic pipe port treatment. BACKGROUND

[0002] Plastic pipes have been widely applied to various fluid conveying systems in modern industry and civil buildings, including indoor water supply and drainage, outdoor buried pipe network, and industrial environments with corrosive media such as chemical industry and power, due to their light weight, corrosion resistance, and convenient construction. However, although plastic pipes have good chemical stability and long service life, aging, wear, and embrittlement inevitably occur during long-term operation due to factors such as environmental temperature, pressure changes, and external forces. Therefore, individual pipes need to be replaced to ensure the safe and stable operation of the entire conveying system.

[0003] During the replacement of plastic pipes, the treatment of the old pipe port is particularly critical. In order to ensure the sealing performance of the connection part, the inner and outer walls of the pipe port usually need to be polished to remove surface burrs, oxidation layers, and impurities, so as to make them smooth and flat, thereby improving the fitting effect of the sealing ring or adhesive material and preventing leakage. However, during the polishing operation, a large amount of heat will be generated due to friction, causing the local temperature of the pipe port to rise rapidly. For plastic pipes that have already aged and worn to some extent, high temperature can easily cause the material to soften or even deform, resulting in a decrease in the dimensional accuracy of the port and affecting the sealing performance of the subsequent connection. SUMMARY

[0004] In order to overcome the shortcomings mentioned in the background art, the application provides a polishing equipment for plastic pipe port treatment.

[0005] The technical scheme is as follows: a polishing equipment for plastic pipe port treatment, comprising a main frame body, the main frame body is rotationally connected with a rotating frame, the rotating frame is slidingly connected with a sliding block, the rotating frame is rotationally and slidingly connected with a sliding frame through the sliding block, the sliding frame is provided with a polishing module for polishing the pipe, the sliding frame is slidingly connected with a connecting frame, the sliding frame is rotationally connected with an adjusting screw threadedly connected with the connecting frame, the connecting frame is slidingly connected with a supporting spring piece, a first elastic member is arranged between the connecting frame and the supporting spring piece, the main frame body is provided with a driving module for driving the rotating frame to rotate, and the main frame body is provided with a supporting assembly for supporting itself and aligning with the pipe.

[0006] As an improvement of the above-mentioned scheme, the connecting frame is slidingly connected with symmetrically distributed pressing plates, the symmetrically distributed pressing plates are respectively located on both sides of the supporting spring piece, the pressing plates are used for extruding the supporting spring piece to deform, and a second elastic member is arranged between the pressing plates and the connecting frame.

[0007] As the improvement of the above-mentioned scheme, the support spring piece is a hollow structure, and the support spring piece is provided with uniformly distributed heat dissipation fins.

[0008] As the improvement of the above-mentioned scheme, the support assembly comprises an inner shaft, the inner shaft is rotationally connected in the main frame body, the inner shaft is fixedly connected with a main gear, the main frame body is rotationally connected with circumferentially distributed auxiliary gears, the circumferentially distributed auxiliary gears are all engaged with the main gear, and the auxiliary gears are fixedly connected with support rods.

[0009] As the improvement of the above-mentioned scheme, the main frame body is provided with a plugging piece for blocking impurities in the pipeline.

[0010] As the improvement of the above-mentioned scheme, the plugging piece is composed of an inner sleeve, a sealing spring piece, a sealing cloth and an extension rod, the inner sleeve is slidingly connected to the main frame body, the inner sleeve is fixedly connected with a fixed part of the extension rod, the extension end of the extension rod is fixedly connected with the middle part of the sealing spring piece, the inner sleeve and the sealing spring piece are fixedly connected with the sealing cloth, and the main frame body is provided with a control assembly for adjusting the bending degree of the sealing spring piece.

[0011] As the improvement of the above-mentioned scheme, the control assembly comprises a driving piece, the driving piece is fixedly connected to the main frame body, the output shaft of the driving piece is fixedly connected with a rotating roller, and the two ends of the sealing spring piece are both fixedly connected with a pull rope between the rotating roller.

[0012] As the improvement of the above-mentioned scheme, the inner sleeve is fixedly connected with a limiting frame, and the pull rope passes through the limiting frame, so as to uniformly control the bending degree of the sealing spring piece.

[0013] As the improvement of the above-mentioned scheme, the rotating roller is provided with a sliding groove, the inner sleeve is fixedly connected with a clamping block, the clamping block slides in the sliding groove, so that the inner sleeve drives the sealing spring piece to move along the pipeline through the extension rod.

[0014] As the improvement of the above-mentioned scheme, one side of the sealing spring piece is provided with a chamfer, so as to facilitate scraping off the impurities on the inner wall.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The present application supports the polishing position of the pipeline through the support spring piece, stabilizes the shape of the polishing position of the pipeline, reduces the probability of thermal deformation at the port of the pipeline to be polished, and improves the sealing strength during subsequent pipeline butt joint.

[0017] 2. By supporting the spring sheet deformation, it can adapt to the inner and outer walls of pipes of different diameters, and at the same time, the supporting spring sheet supports the area around the polishing position of the pipe, disperses the vibration generated when the pipe is polished, improves the uniformity of pipe polishing, and the inner heat dissipation fin of the supporting spring sheet absorbs the heat generated by pipe polishing, further reducing the probability of pipe deformation.

[0018] 3. By sealing the spring sheet to adapt to the inner lower half of pipes of different diameters, the sealing spring sheet cooperates with the sealing cloth to form a barrier to the lower half of the pipe, blocking the residual liquid in the pipe from flowing to the polishing position, and improving the polishing uniformity of the inner wall of the pipe.

[0019] 4. By pushing the sealing spring sheet forward after it is attached to the pipe, the impurities attached to the bottom of the pipe are scraped off, and the area where the sealing spring sheet is attached after scraping off the impurities from the pipe is improved, improving the sealing strength of the sealing spring sheet to the liquid in the pipe. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0021] Figure 2 is a schematic diagram of the three-dimensional structure of the polishing module and the connecting frame of the present application;

[0022] Figure 3 is a schematic diagram of the three-dimensional structure of the pressing plate of the present application;

[0023] Figure 4 is a schematic diagram of the three-dimensional structure of the main gear and the secondary gear of the present application;

[0024] Figure 5 is a schematic diagram of the three-dimensional structure of the sealing member of the present application;

[0025] Figure 6 is a schematic diagram of the three-dimensional structure of the inner sleeve and the sealing spring sheet of the present application;

[0026] Figure 7 is a schematic diagram of the three-dimensional structure of the sliding groove and the clamping block of the present application.

[0027] Figure label name: 1-main frame body, 2-rotating frame, 3-sliding frame, 4-polishing module, 5-connecting frame, 6-adjusting screw, 7-supporting spring sheet, 8-driving module, 9-first elastic member, 10-pressing plate, 11-second elastic member, 201-inner shaft, 202-main gear, 203-secondary gear, 204-supporting rod, 300-sealing member, 301-inner sleeve, 302-sealing spring sheet, 303-sealing cloth, 304- telescopic rod, 401-driving member, 402-rotating roller, 403-pull rope, 404-limiting frame, 501-sliding groove, 502-clamping block. DETAILED DESCRIPTION

[0028] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0029] In the replacement of plastic pipes, the treatment of the old pipe port is very important. In order to ensure the sealing reliability of the connection part, the inner and outer walls of the port are usually polished to remove burrs, oxide layers and impurities, improve the surface flatness, enhance the adhesion effect of the sealing ring or adhesive, and prevent leakage. However, a large amount of heat will be generated due to friction during polishing, causing the local temperature of the port to rise rapidly. For plastic pipes that have already aged or worn, high temperature can easily cause the material to soften or even deform, thereby affecting the size accuracy and sealing performance of the port.

[0030] Embodiment 1

[0031] The embodiment discloses a polishing equipment for plastic pipe port treatment, which is used for polishing and supporting the pipe port.

[0032] As shown in Figures 1-3 , it comprises a main frame body 1, the main frame body 1 is rotationally connected with a rotating frame 2, the rotating frame 2 is slidingly connected with a sliding block, the rotating frame 2 is rotationally and slidingly connected with a sliding frame 3 through the sliding block, the sliding frame 3 is provided with a polishing module 4 for polishing the pipe, the polishing module 4 is composed of a polishing roller and a servo motor, the servo motor is fixedly connected to the sliding frame 3, the output shaft of the servo motor is fixedly connected with the polishing roller, the sliding frame 3 slides along the sliding block on the rotating frame 2 to adapt to pipes of different diameters, and meanwhile the sliding frame 3 can slide and rotate along the sliding block on the rotating frame 2, so as to adjust the polishing position of the polishing module 4 on the inner wall or the outer wall of the pipe, the sliding frame 3 is slidingly connected with a connecting frame 5, the sliding frame 3 is rotationally connected with an adjusting screw 6 which is threadedly connected with the connecting frame 5, the adjusting screw 6 is used to make the connecting frame 5 slide along the sliding frame 3, the connecting frame 5 is slidingly connected with a supporting spring piece 7, and a first elastic member 9 is arranged between the connecting frame 5 and the supporting spring piece 7, the first elastic member 9 is a tension spring, which is used to dynamically connect the supporting spring piece 7 and the connecting frame 5, make the supporting spring piece 7 and the connecting frame 5 slide relative to each other, and provide a deformation space for the supporting spring piece 7, the main frame body 1 is provided with a driving module 8 for driving the rotating frame 2 to rotate, the driving module 8 is composed of a servo motor, a straight gear and a gear ring, the servo motor is fixedly connected to the main frame body 1, the straight gear is fixedly connected to the output shaft of the servo motor, and the gear ring is fixedly connected to the rotating frame 2, the straight gear is engaged with the gear ring, so that the rotating frame 2 can rotate around the main frame body 1, and the main frame body 1 is provided with a supporting assembly for supporting itself and aligning with the pipe.

[0033] As shown in Figure 2 and Figure 3As shown, the connecting frame 5 is slidingly connected with two symmetrically distributed pressing plates 10, the two symmetrically distributed pressing plates 10 are respectively located on the two sides of the supporting spring piece 7, the pressing plate 10 is used for extruding the supporting spring piece 7 to deform, a second elastic member 11 is arranged between the pressing plate 10 and the connecting frame 5, the second elastic member 11 is a tension spring, which is used for dynamically connecting the supporting spring piece 7 and the pressing plate 10, sliding the supporting spring piece 7 and the pressing plate 10 relative to each other, providing a deformation space for the supporting spring piece 7, the elastic coefficients of the first elastic member 9 and the second elastic member 11 are both greater than the elastic coefficient of the supporting spring piece 7, so that the tensile force of the first elastic member 9 and the second elastic member 11 makes the supporting spring piece 7 deform, the supporting spring piece 7 has a hollow structure, and uniformly distributed heat dissipation fins are arranged in the supporting spring piece 7, which are used for absorbing heat generated at the pipe polishing position, further reducing the probability of pipe deformation due to heat, and the supporting spring piece 7 can be self-adapted to the inner and outer walls of pipes with different diameters by deforming, and the supporting spring piece 7 can support the polishing position of the pipe around the polishing module 4, disperse the vibration generated during pipe polishing, and improve the uniformity of pipe polishing.

[0034] As shown in Figure 1 , Figure 4 and Figure 5 , the supporting assembly comprises an inner shaft 201 rotatably connected in the main frame body 1, the inner shaft 201 is fixedly connected with a main gear 202, the main frame body 1 is rotatably connected with three circumferentially equidistantly distributed auxiliary gears 203, the three circumferentially equidistantly distributed auxiliary gears 203 are all in mesh with the main gear 202, the auxiliary gear 203 is fixedly connected with a supporting rod 204, in the initial state, the supporting rod 204 is folded to one side close to the main frame body 1, by synchronously deflecting the three supporting rods 204 outward and contacting with the inner wall of the pipe, three-point centering and fixing of the device are formed.

[0035] Working principle: when the pipe needs to be maintained and polished, the worker places the device in the pipe, then rotates the inner shaft 201, so that the inner shaft 201 drives the main gear 202 on it to rotate, the main gear 202 drives the three circumferentially distributed auxiliary gears 203 to rotate synchronously, so that the auxiliary gear 203 drives the supporting rod 204 on it to deflect, until the three supporting rods 204 are all in contact with the inner wall of the pipe, at this moment, three-point centering and support are formed, so that the center axis of the main frame body 1 coincides with the center axis of the pipe to be polished, at this moment, the fixing operation of the device is completed.

[0036] When the device is fixed, the preparation work for polishing the pipe is started. Since the polishing module 4 needs to polish the inner and outer walls of the pipe respectively, first, the polishing position is the inner wall of the pipe. The staff controls the sliding frame 3 to slide along the rotating frame 2 and rotates to adjust the position of the polishing module 4, so that the polishing module 4 is attached to the inner wall of the pipe. At this moment, the support spring sheet 7 is located outside the pipe. Then the staff rotates the adjusting screw 6, which drives the connecting frame 5 to slide along the sliding frame 3, so that the connecting frame 5 drives the middle part of the support spring sheet 7 to attach to the outer wall of the pipe to form a support, and the polishing position of the pipe is supported by the support spring sheet 7, which stabilizes the shape of the polishing position of the pipe and reduces the probability of thermal deformation at the port of the pipe, thereby improving the sealing strength during subsequent pipe butt joint.

[0037] When the middle part of the support spring sheet 7 contacts the pipe, the staff continues to rotate the adjusting screw 6, so that the first elastic member 9 starts to stretch. At this moment, the connecting frame 5 drives the two symmetrically distributed pressing plates 10 to move synchronously, so that the two pressing plates 10 press the two sides of the support spring sheet 7 respectively, and the two sides of the support spring sheet 7 are bent inward. In this way, the support spring sheet 7 is completely attached to the outer wall of the pipe, and the support spring sheet 7 supports the polishing position of the pipe in the area, dispersing the vibration generated during polishing of the pipe.

[0038] Similarly, when polishing the outer wall of the pipe, the staff makes the polishing module 4 attached to the outer wall of the pipe, and then rotates the adjusting screw 6 to make the support spring sheet 7 close to the inner wall of the pipe. At this moment, the two ends of the support spring sheet 7 first contact the inner wall of the pipe, and then the staff continues to rotate the adjusting screw 6, so that the adjusting screw 6 drives the middle part of the support spring sheet 7 to attach to the inner wall of the pipe through the connecting frame 5. At this moment, the second elastic member 11 starts to stretch. In this way, the support spring sheet 7 is attached to the inner wall of the pipe. The deformation of the support spring sheet 7 can adapt to the inner and outer walls of pipes of different diameters, and at the same time, the support spring sheet 7 supports the polishing position of the pipe in the area around the polishing module 4, disperses the vibration generated during polishing of the pipe, and improves the uniformity of polishing of the pipe. When the polishing module 4 and the support spring sheet 7 are respectively attached to the inner and outer walls of the pipe, the polishing preparation work of the pipe is completed at this moment.

[0039] When the preparation work for polishing the pipe is completed, the polishing module 4 and the driving module 8 are started, and the inner wall of the pipe is polished. At the same time, the driving module 8 drives the rotating frame 2 to rotate, so that the polishing module 4 rotates synchronously, thereby realizing the polishing of the inner wall of the pipe. In this way, the polishing of the pipe is completed. During this period, the support spring sheet 7 not only supports the polishing position of the pipe to inhibit deformation, but also absorbs the heat generated during polishing of the pipe and dissipates the heat through the internal heat dissipation fins, thereby further reducing the probability of deformation of the pipe.

[0040] After the polishing of the pipeline is completed, the polishing module 4 and the driving module 8 are closed, the rotating adjusting screw 6 is reset, the supporting spring sheet 7 is separated from the pipeline, the first elastic member 9 or the second elastic member 11 is reset, then the worker rotates the inner shaft 201, the inner shaft 201 drives the plurality of supporting rods 204 to be separated from the pipeline through the main gear 202 and the secondary gear 203, then the worker takes out the device from the pipeline, and when the pipeline needs to be maintained and polished again, the above steps are repeated.

[0041] When the pipeline in use is replaced, the polishing treatment of the inner wall of the old pipeline is a key step to ensure the sealing performance of the connection, however, the residual conveying liquid in the pipeline often continuously flows to the polishing area, causing the polishing tool to slip and affecting the polishing uniformity, especially in a long-distance conveying system, the residual liquid is difficult to completely drain in a short time, which further increases the difficulty of the polishing operation and affects the construction quality and efficiency.

[0042] Embodiment 2

[0043] The embodiment discloses a polishing device for plastic pipe mouth treatment, which is further improved on the basis of embodiment 1.

[0044] As shown in Figure 1 , Figure 5 and Figure 6 , the main frame body 1 is provided with a blocking member 300 for blocking impurities in the pipeline, the blocking member 300 is composed of an inner sleeve 301, a sealing spring sheet 302, a sealing cloth 303 and an extension rod 304, the sealing spring sheet 302 has elasticity, and the side of the sealing spring sheet 302 in contact with the pipeline is provided with a rubber pad for improving the sealing strength of the lower half of the pipeline, the inner sleeve 301 is slidingly connected to the main frame body 1, the inner sleeve 301 is fixedly connected with the fixed part of the extension rod 304, and the extension end of the extension rod 304 is fixedly connected with the middle part of the sealing spring sheet 302, so that the sealing spring sheet 302 uniformly adheres to the pipeline from the middle part, the sealing spring sheet 302 with elasticity deforms to adapt to pipelines with different diameters, the inner sleeve 301 and the sealing spring sheet 302 are fixedly connected with the sealing cloth 303, the sealing cloth 303 is in a relaxed state, for adapting to the change of the sealing spring sheet 302, the main frame body 1 is provided with a control assembly for adjusting the curvature of the sealing spring sheet 302, the lower half of the pipeline is adhered by the sealing spring sheet 302, the residual liquid in the pipeline is blocked from flowing to the polishing position, and the polishing uniformity of the inner wall of the pipeline is improved.

[0045] As shown in Figure 5 and Figure 6As shown, the control assembly includes a drive member 401, which is a servo motor, fixedly connected to the main frame body 1. The output shaft of the drive member 401 is fixedly connected with a rotating roller 402. The two ends of the sealing spring sheet 302 are fixedly connected with pull ropes 403 between the rotating roller 402. The connection positions of the two pull ropes 403 with the rotating roller 402 are on the same side of the rotating roller 402. The pull ropes 403 are partially wound on the rotating roller 402 in the initial state, and the sealing spring sheet 302 is in the force storage bending state. The inner sleeve 301 is fixedly connected with a limiting frame 404. The pull ropes 403 pass through the limiting frame 404, which is used to uniformly control the bending degree of the sealing spring sheet 302. The limiting frame 404 is used to guide the running track of the pull ropes 403, so as to ensure that the two ends of the sealing spring sheet 302 are uniformly attached to the inner wall of the pipeline.

[0046] As shown in Figure 7 The rotating roller 402 is provided with a sliding groove 501, and the axial length of the sliding groove 501 is greater than the width of the sealing spring sheet 302, so that the sealing spring sheet 302 can still slide along the pipeline after completely attaching to the inner wall of the pipeline. The inner sleeve 301 is fixedly connected with a clamping block 502, which slides in the sliding groove 501. The clamping block 502 drives the inner sleeve 301 to slide along the main frame body 1 through the sliding groove 501, so that the inner sleeve 301 drives the sealing spring sheet 302 to move along the pipeline through the telescopic rod 304. The side of the sealing spring sheet 302 facing the pipeline port is provided with a chamfer, which is convenient for scraping off the impurities on the inner wall. The impurities attached to the inside of the pipeline are scraped off by the sealing spring sheet 302, and the sealing spring sheet 302 is attached to the area after scraping off the impurities of the pipeline, so as to improve the sealing strength of the sealing spring sheet 302 to the liquid in the pipeline.

[0047] Working principle: when the device is placed in the pipeline, the bottom of the sealing member 300 is attached to the inner bottom of the pipeline, that is, the telescopic end of the telescopic rod 304 is in contact with the inner bottom of the pipeline through the sealing spring sheet 302, and then the device is fixed. When the device is fixed, the telescopic end of the telescopic rod 304 will stretch according to the inner diameter of the pipeline along its fixed part, and adapt to the length of the inner diameter of the pipeline. At this moment, the middle part of the sealing spring sheet 302, that is, the connection position of the telescopic end of the telescopic rod 304 and the sealing spring sheet 302, is attached to the bottom of the pipeline. Then the drive member 401 is started, so that the output shaft of the drive member 401 drives the rotating roller 402 to rotate. The rotating roller 402 rotates to release the two pull ropes 403 wound thereon. With the release of the two pull ropes 403, the two ends of the sealing spring sheet 302 are gradually opened and gradually attached to the inner wall of the pipeline. In this way, the sealing spring sheet 302 is completely attached to the inner wall of the pipeline. At the same time, the sealing cloth 303 automatically adapts to the change of the shape of the sealing spring sheet 302. At this moment, the sealing spring sheet 302 is attached to the lower half of the pipeline and cooperates with the sealing cloth 303 to form a barrier to the lower half of the pipeline, so as to block the residual liquid in the pipeline from flowing to the polishing position, thereby causing the polishing module 4 to polish the bottom of the pipeline, causing the polishing module 4 to polish the bottom of the pipeline unevenly.

[0048] In the process of sealing spring 302 adhering to the inner wall of the pipeline, the output shaft of driving member 401 drives rotating roller 402 to rotate and release the pull rope 403 thereon. In this process, rotating roller 402 will drive the sliding groove 501 thereon to rotate synchronously. The sliding groove 501 drives the inner sleeve 301 to slide along the main frame 1 through the clamping block 502. The inner sleeve 301 drives the sealing spring 302 to move synchronously through the limiting frame 404 and the telescopic rod 304 thereon. The sealing spring 302 gradually adheres to the pipeline to gradually move along the pipeline, so that the sealing spring 302 moves to the port position of the pipeline to scrape off the impurities adhered to the inner wall of the pipeline. When the sealing spring 302 completely adheres to the pipeline, the driving member 401 continues to drive the rotating roller 402 to rotate, so that the sealing spring 302 adheres to the pipeline as a whole, and then scrapes off the impurities at the bottom of the pipeline. The sealing spring 302 stays in the area after scraping off the impurities, thereby improving the sealing strength of the sealing spring 302 to the liquid in the pipeline.

[0049] When the polishing is finished, before rotating the inner shaft 201 to release the fixation of the device, first make the output shaft of the driving member 401 reverse rotation, the rotating roller 402 resets rotation, and the two pull ropes 403 are wound. At the same time, the inner sleeve 301 resets movement, and so on until the sealing spring 302 resets to the initial state. Then, the fixation of the device is released, and the device is taken out of the pipeline. When the pipeline is polished again, the above steps are repeated.

[0050] The above only describes the embodiments of the present application and is not used to limit the present application. Any equivalent replacement within the principles of the present application shall be included in the protection scope of the present application. The contents not described in detail in the present application belong to the prior art known by the technical personnel in the field.

Claims

1. A grinding device for treating the ends of plastic pipes, comprising a main frame (1), wherein a rotating frame (2) is rotatably connected to the main frame (1), a slider is slidably connected to the rotating frame (2), the slider on the rotating frame (2) rotates and is slidably connected to a sliding frame (3), and the sliding frame (3) is provided with a grinding module (4) for grinding pipes, characterized in that, The sliding frame (3) is slidably connected with a connecting frame (5), the sliding frame (3) is rotatably connected with an adjusting screw (6) which is threadedly connected with the connecting frame (5), the connecting frame (5) is slidably connected with a supporting spring piece (7), a first elastic member (9) is arranged between the connecting frame (5) and the supporting spring piece (7), the main frame body (1) is provided with a driving module (8) for driving the rotating frame (2) to rotate, and the main frame body (1) is provided with a supporting assembly for supporting itself and aligning with the pipeline; The main frame body (1) is provided with a blocking member (300) for blocking impurities in the pipeline; The blocking member (300) is composed of an inner sleeve (301), a sealing spring piece (302), a sealing cloth (303) and an extension rod (304), the inner sleeve (301) is slidably connected with the main frame body (1), the inner sleeve (301) is fixedly connected with a fixed part of the extension rod (304), an extension end of the extension rod (304) is fixedly connected with a middle part of the sealing spring piece (302), and the inner sleeve (301) and the sealing spring piece (302) are fixedly connected with the sealing cloth (303), and the main frame body (1) is provided with a control assembly for adjusting the bending degree of the sealing spring piece (302).

2. A polishing apparatus for plastic pipe end treatment according to claim 1, characterized in that, The connecting frame (5) is slidably connected with symmetrically distributed pressing plates (10), the symmetrically distributed pressing plates (10) are respectively located on both sides of the supporting spring piece (7), the pressing plates (10) are used for extruding the supporting spring piece (7) to deform, and a second elastic member (11) is arranged between the pressing plates (10) and the connecting frame (5).

3. A polishing apparatus for plastic pipe end treatment according to claim 1, wherein The supporting spring piece (7) has a hollow structure, and uniformly distributed heat dissipation fins are arranged in the supporting spring piece (7).

4. A polishing apparatus for plastic pipe end treatment according to claim 1, wherein The supporting assembly comprises an inner shaft (201), the inner shaft (201) is rotatably connected in the main frame body (1), the inner shaft (201) is fixedly connected with a main gear (202), the main frame body (1) is rotatably connected with circumferentially distributed auxiliary gears (203), the circumferentially distributed auxiliary gears (203) are all in mesh with the main gear (202), and the auxiliary gears (203) are fixedly connected with supporting rods (204).

5. A polishing apparatus for plastic pipe end treatment according to claim 1, wherein The control assembly comprises a driving member (401), the driving member (401) is fixedly connected with the main frame body (1), an output shaft of the driving member (401) is fixedly connected with a rotating roller (402), and both ends of the sealing spring piece (302) are fixedly connected with pull ropes (403) between the rotating roller (402).

6. A polishing apparatus for plastic pipe end treatment according to claim 5, wherein The inner sleeve (301) is fixedly connected with a limiting frame (404), the pull ropes (403) pass through the limiting frame (404), and the pull ropes (403) are used for uniformly controlling the bending degree of the sealing spring piece (302).

7. A polishing apparatus for plastic pipe end treatment according to claim 6, characterized in that, The rotating roller (402) is provided with a sliding groove (501), the inner sleeve (301) is fixedly connected with a clamping block (502), the clamping block (502) slides in the sliding groove (501), so that the inner sleeve (301) drives the sealing spring piece (302) to move along the pipeline through the extension rod (304).

8. A polishing apparatus for plastic pipe end treatment according to claim 7, characterized in that, The sealing spring (302) is provided with a chamfer on one side, which facilitates the removal of impurities on the inner wall.

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