Leveling and calendering machine for PVC (polyvinyl chloride) lining of cement socket pipe

Abstract

The invention belongs to the technical field of pipe fitting processing, and discloses a cement socket pipe lining PVC leveling and calendering machine which comprises a leveling and calendering machine frame assembly, the rear end of the leveling and calendering machine frame assembly is provided with a socket pipe inner supporting arm assembly used for conducting inner supporting on different cement socket pipes, and the leveling and calendering machine frame assembly is provided with an inner supporting arm assembly. In order to guarantee the leveling and calendering effect on PVC of the cement socket pipe lining, the lining leveling arm assembly is used for carrying out annular moving leveling and calendering and self-rotating leveling and calendering on the cement socket pipe lining, and the leveling and calendering effect on PVC of the cement socket pipe lining is guaranteed; by means of the double-layer rotating structure, rotation leveling and calendaring of the cement socket pipe lining are achieved again while the cement socket pipe lining is subjected to ring moving rolling, and by means of the mode, ring moving leveling and calendaring and rotation leveling and calendaring of the cement socket pipe lining are achieved through the lining leveling roller.

Description

Technical Field

[0001] This invention belongs to the field of pipe processing technology, specifically relating to a PVC leveling and calendering machine for cement socket pipes. Background Technology

[0002] Cement socket pipes, as a common type of pipe connection, are widely used in municipal drainage, water conservancy projects, cable sheathing, and other fields. To improve the corrosion resistance, sealing performance, and fluid flow efficiency of their inner walls, they are often lined with a layer of plastic materials such as PVC (polyvinyl chloride). However, during the lining process, PVC materials are prone to defects such as unevenness, bubbles, and wrinkles, which affect the performance and service life of the pipes.

[0003] Currently, the leveling and polishing of PVC linings in cement socket pipes is mostly done manually or semi-mechanized, which presents the following technical problems:

[0004] Poor leveling effect: Traditional processes rely on manual scraping or simple roller pressing, which makes it difficult to achieve uniform and comprehensive inner wall leveling. Especially for large-diameter or long pipes, the treatment effect is inconsistent, and quality problems such as unevenness and obvious seams are easily left behind.

[0005] Low efficiency: Manual operation is labor-intensive and inefficient, unable to meet the needs of large-scale engineering applications, and has poor quality stability and high rate of repetitive work.

[0006] Insufficient adaptability: Existing equipment often struggles to adapt to sockets with different diameters and curvatures, especially lacking adaptive calendering and spacing adjustment functions for the inner lining of the pipe, resulting in poor equipment versatility.

[0007] Limited functionality: Most existing equipment only has a single leveling or calendering function, lacking an integrated design of heating pretreatment and leveling and calendering, which affects the final treatment effect and bonding strength.

[0008] Complex structure and difficult maintenance: Although some mechanized equipment has a certain degree of automation, its complex structure, cumbersome adjustment and high maintenance cost make it difficult to promote its use.

[0009] Therefore, there is an urgent need for a specialized device that integrates heating, leveling, and polishing, has adaptive pipe diameter adjustment function, and is easy to operate and highly efficient, in order to improve the quality and construction efficiency of PVC lining in cement socket pipes. Summary of the Invention

[0010] To address the problems mentioned in the background section, this invention provides a PVC leveling and calendering machine for cement socket pipes, featuring a dual-rotor leveling and calendering mechanism.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a PVC leveling and calendering machine for cement socket pipe lining, comprising a leveling and calendering machine frame assembly, wherein a socket pipe inner support arm assembly for internal support of different cement socket pipes is provided at the rear end of the leveling and calendering machine frame assembly, and a leveling heating chamber assembly for heating the cement socket pipe lining is provided at the front end of the leveling and calendering machine frame assembly; multiple sets of lining leveling arm assemblies for roller pressing the cement socket pipe lining are provided on the side of the leveling heating chamber assembly away from the socket pipe inner support arm assembly; the lining leveling arm assemblies perform circumferential leveling and calendering and rotational leveling and calendering on the cement socket pipe lining; and an adjustment component for adjusting the leveling and calendering spacing is provided on the lining leveling arm assembly.

[0012] In a preferred embodiment of a PVC leveling and calendering machine for cement socket pipe lining, the leveling and calendering machine frame assembly includes a calendering arm, a side frame and a mounting plate are fixedly installed at the rear end of the calendering arm, a seat cover is fixedly installed at the front end of the calendering arm, a push spring is sleeved on the front end of the calendering arm, a rotating end plate is rotatably installed at the front end of the seat cover, a first drive motor is fixedly installed at the rear end of the rotating end plate, and a central gear is installed on the output shaft of the first drive motor.

[0013] In a preferred embodiment of a PVC leveling and calendering machine for cement socket pipe lining, the socket pipe inner support arm assembly includes an inner support arm ring, a plurality of arm ring side frames are fixedly provided on one side of the inner support arm ring, an inner support main arm is rotatably provided on the arm ring side frame, a movable wheel is provided at the top of the inner support main arm, and an auxiliary support arm is hinged in the middle of the inner support main arm.

[0014] The leveling heating chamber assembly includes a fixed toothed ring, a heating chamber is fixedly disposed on the outer wall of the fixed toothed ring, and a heating rod is fixedly disposed on the inner wall of the heating chamber.

[0015] In a preferred embodiment of a PVC lining leveling and calendering machine for cement socket pipes, the lining leveling arm assembly includes a lining leveling main arm and a leveling roller support arm. A main arm gear is fixedly installed at the rear end of the lining leveling main arm, and a main arm end frame is fixedly installed at the front end of the lining leveling main arm. A limiting end frame is fixedly installed at the front end of the main arm end frame via a lateral support arm. A T-shaped sliding groove is opened on the lining leveling main arm. A second drive motor is fixedly installed at the rear end of the limiting end frame. An lining leveling roller is installed at the top of the leveling roller support arm, and a toggle arm is fixedly installed at the bottom of the leveling roller support arm. A T-shaped slider is fixedly installed at the rear end of the leveling roller support arm.

[0016] In a preferred embodiment of a PVC leveling and calendering machine for cement socket pipe lining, the adjusting component includes an adjusting wheel, on which an adjusting arc groove is formed.

[0017] In a preferred embodiment of a PVC leveling and calendering machine for cement socket pipes, the inner support arm ring slides linearly back and forth on the calendering machine arm, the end of the auxiliary support arm away from the inner support main arm is rotatably mounted on the side frame, and the two ends of the push spring abut against the seat cover and the inner support arm ring respectively. Through the push of the push spring on the inner support arm ring, the multiple inner support main arms on the inner support arm ring form a buffer inner support arm structure on the inner wall of the cement socket pipe.

[0018] In a preferred embodiment of a PVC leveling and calendering machine for cement socket pipes, the fixed tooth ring is fixed on the end face frame of the seat cover away from the calender arm.

[0019] In a preferred embodiment of a PVC leveling and calendering machine for cement socket pipes, the leveling roller support arm slides linearly within a T-shaped groove via a T-shaped slider. The pitch adjustment wheel is mounted on the output shaft of a second drive motor. The actuating arm on the leveling roller support arm is inserted into the pitch adjustment arc groove. Through the synchronous actuation of multiple actuating arms via multiple pitch adjustment arc grooves on the pitch adjustment wheel, the inner lining leveling rollers at the top of the multiple leveling roller support arms form a leveling and calendering roller structure with adjustable spacing within the cement socket pipe.

[0020] In a preferred embodiment of a PVC leveling and calendering machine for cement socket pipe lining, the rear end of the lining leveling main arm is rotatably mounted on a rotating end plate, the fixed gear ring, the main arm gear and the center gear are on the same longitudinal plane, the main arm gear is located between the center gear and the fixed gear ring, one side of the main arm gear meshes with the inner wall of the fixed gear ring, and the other side of the main arm gear meshes with the center gear.

[0021] In a preferred embodiment of a PVC lining leveling and calendering machine for cement socket pipes, the lining leveling arm assembly forms a circumferential and self-rotating structure on the leveling and calendering machine frame assembly through the meshing of the main arm gear with the fixed gear ring and the center gear. The rear end of the calendering arm is fixed to the existing traction equipment by a mounting plate and bolts.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. When the present invention is placed inside the cement socket pipe, the second drive motor first drives the pitch adjustment wheel to rotate. At this time, the multiple pitch adjustment arc grooves on the pitch adjustment wheel form an inward retraction force on the leveling roller support arm through the actuating arm. In this way, the spacing of multiple inner lining leveling rollers on the inner lining leveling arm assembly can be adjusted, thereby facilitating the placement of the present invention inside the cement socket pipe.

[0024] 2. In order to ensure the leveling and calendering effect of the PVC lining of the cement socket pipe, the lining leveling arm assembly of the present invention performs circumferential leveling and calendering and rotational leveling and calendering on the lining of the cement socket pipe. Through the double-layer rotating structure of the present invention, while realizing the circumferential rolling of the lining of the cement socket pipe, the rotational leveling and calendering of the lining of the cement socket pipe is realized again. In this way, the lining leveling roller realizes both circumferential leveling and calendering and rotational leveling and calendering of the lining of the cement socket pipe.

[0025] 3. The rear end of the leveling and calendering frame assembly of the present invention is provided with a socket pipe inner support arm assembly for internal support of different cement socket pipes. In this way, the stability of the leveling and calendering of the inner wall of the cement socket pipe by multiple sets of inner lining leveling arm assemblies is ensured, and an effective support is provided for leveling and calendering. At the same time, the support of the socket pipe inner support arm assembly of the present invention is achieved by the thrust of the push spring. When encountering cement socket pipes of different diameters, the automatic extension and retraction of the push spring realizes the adaptive support of the socket pipe inner support arm assembly in cement socket pipes of different diameters. Attached Figure Description

[0026] Figure 1 This is a perspective view of the present invention;

[0027] Figure 2 This is an exploded view of the present invention;

[0028] Figure 3 This is a perspective view of the leveling and calendering machine frame assembly of the present invention;

[0029] Figure 4 This is a perspective view of the inner support arm assembly of the socket tube of the present invention;

[0030] Figure 5 This is a perspective view of the leveling heating chamber assembly of the present invention;

[0031] Figure 6 This is a perspective view of the inner lining leveling arm assembly and the spacing adjustment assembly of the present invention.

[0032] Figure 7 This is a perspective view of the inner lining leveling arm assembly of the present invention;

[0033] Figure 8 This is a perspective view of the distance adjustment component of the present invention.

[0034] In the diagram: 100. Leveling and calendering machine frame assembly; 101. Calendering machine arm; 102. Side frame; 103. Mounting base; 104. Push spring; 105. Seat cover; 106. First drive motor; 107. Rotating end plate; 108. Center gear; 200. Socket tube inner support arm assembly; 201. Inner support arm ring; 202. Arm ring side frame; 203. Inner support main arm; 204. Moving wheel; 205. Auxiliary support arm; 300. Leveling heating chamber assembly; 301. Fixed gear ring. 302. Heating chamber; 303. Heating rod; 400. Lining leveling arm assembly; 401. Lining leveling main arm; 402. Main arm gear; 403. Main arm end frame; 404. Lateral support arm; 405. Lining leveling roller; 406. Leveling roller support arm; 407. T-shaped slider; 408. Actuating arm; 409. T-shaped slide groove; 410. Limiting end frame; 411. Second drive motor; 500. Adjustment assembly; 501. Adjustment wheel; 502. Adjustment arc groove. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-8 As shown, the present invention provides a PVC leveling and calendering machine for cement socket pipe lining, including a leveling and calendering machine frame assembly 100. The rear end of the leveling and calendering machine frame assembly 100 is provided with a socket pipe inner support arm assembly 200 for internal support of different cement socket pipes, and the front end of the leveling and calendering machine frame assembly 100 is provided with a leveling heating chamber assembly 300 for heating the cement socket pipe lining. On the side of the leveling heating chamber assembly 300 away from the socket pipe inner support arm assembly 200, multiple sets of inner lining leveling arm assemblies 400 are provided for rolling and flattening the cement socket pipe lining. The inner lining leveling arm assemblies 400 perform circumferential leveling and calendering and self-rotation leveling and calendering on the cement socket pipe lining. The inner lining leveling arm assemblies 400 are provided with a spacing adjustment assembly 500 for adjusting the leveling and calendering spacing.

[0037] In a preferred embodiment, please refer to Figure 3The leveling and calendering machine frame assembly 100 includes a calendering machine arm 101. A side frame 102 and a mounting plate 103 are fixedly installed at the rear end of the calendering machine arm 101. A seat cover 105 is fixedly installed at the front end of the calendering machine arm 101. A push spring 104 is sleeved on the front end of the calendering machine arm 101. A rotating end plate 107 is rotatably installed at the front end of the seat cover 105. A first drive motor 106 is fixedly installed at the rear end of the rotating end plate 107. A central gear 108 is installed on the output shaft of the first drive motor 106.

[0038] In this embodiment, the rear end of the calender arm 101 is fixed to the existing traction equipment by a mounting plate 103 and bolts.

[0039] In a preferred embodiment, please refer to Figure 4 The socket tube inner support arm assembly 200 includes an inner support arm ring 201. Multiple arm ring side frames 202 are fixedly installed on one side of the inner support arm ring 201. An inner support main arm 203 is rotatably installed on the arm ring side frame 202. A movable wheel 204 is installed on the top of the inner support main arm 203, and an auxiliary support arm 205 is hinged in the middle of the inner support main arm 203.

[0040] In this embodiment, the inner support arm ring 201 slides linearly back and forth on the calender arm 101, and the auxiliary support arm 205 is rotatably mounted on the side frame 102 at one end away from the inner support main arm 203.

[0041] In this embodiment, the two ends of the push spring 104 abut against the seat cover 105 and the inner support arm ring 201, respectively.

[0042] In this embodiment, the inner support arm ring 201 is pushed by the push spring 104, and the multiple inner support main arms 203 on the inner support arm ring 201 form a buffer inner support arm structure on the inner wall of the cement socket pipe.

[0043] In a preferred embodiment, please refer to Figure 5 The leveling heating chamber assembly 300 includes a fixed toothed ring 301, a heating chamber 302 is fixedly disposed on the outer wall of the fixed toothed ring 301, and a heating rod 303 is fixedly disposed on the inner wall of the heating chamber 302.

[0044] In this embodiment, the fixed tooth ring 301 is fixed on the end face frame of the seat cover 105 away from the calender arm 101.

[0045] In a preferred embodiment, please refer to Figure 7The inner lining leveling arm assembly 400 includes an inner lining leveling main arm 401 and a leveling roller support arm 406. The rear end of the inner lining leveling main arm 401 is fixedly provided with a main arm gear 402, and the front end of the inner lining leveling main arm 401 is fixedly provided with a main arm end frame 403. The front end of the main arm end frame 403 is fixedly provided with a limiting end frame 410 through a lateral support arm 404. A T-shaped slide groove 409 is provided on the inner lining leveling main arm 401. A second drive motor 411 is fixedly provided at the rear end of the limiting end frame 410. An inner lining leveling roller 405 is provided at the top of the leveling roller support arm 406, and a toggle arm 408 is fixedly provided at the bottom of the leveling roller support arm 406. A T-shaped slider 407 is fixedly provided at the rear end of the leveling roller support arm 406.

[0046] In this embodiment, the leveling roller support arm 406 slides linearly within the T-shaped groove 409 via the T-shaped slider 407.

[0047] In this embodiment, the rear end of the lining leveling main arm 401 is rotatably mounted on the rotating end plate 107.

[0048] In this embodiment, the fixed gear ring 301, the main arm gear 402, and the center gear 108 are on the same longitudinal plane, and the main arm gear 402 is disposed between the center gear 108 and the fixed gear ring 301.

[0049] In this embodiment, one side of the main arm gear 402 meshes with the inner wall of the fixed gear ring 301, and the other side of the main arm gear 402 meshes with the center gear 108. Through the meshing of the main arm gear 402 with the fixed gear ring 301 and the center gear 108, the inner lining leveling arm assembly 400 forms a circumferential and self-rotating structure on the leveling and calendering frame assembly 100.

[0050] In a preferred embodiment, please refer to Figure 8 The pitch adjustment assembly 500 includes a pitch adjustment wheel 501, on which a pitch adjustment arc groove 502 is provided.

[0051] In this embodiment, the pitch adjustment wheel 501 is mounted on the output shaft of the second drive motor 411.

[0052] In this embodiment, the actuating arm 408 on the leveling roller support arm 406 is inserted into the pitch groove 502.

[0053] In this embodiment, by synchronously moving multiple actuating arms 408 through multiple adjustable grooves 502 on the adjustable wheel 501, the inner lining leveling rollers 405 at the top of multiple leveling roller support arms 406 form a leveling and calendering roller structure with adjustable spacing inside the cement socket pipe.

[0054] The working principle of this invention is as follows: Existing PVC leveling and calendering equipment for cement socket pipe linings is cumbersome to adjust because the existing leveling and calendering rollers require both circumferential motion and spacing adjustment, making the equipment complex to use. The need for both circumferential motion and spacing adjustment results in an overly complex and cumbersome structure, hindering maintenance and use. In contrast, this invention provides a leveling heating chamber assembly 300 with multiple sets of lining leveling arm assemblies 400 on the side away from the socket pipe inner support arm assembly 200, which roll and flatten the cement socket pipe lining. Each lining leveling arm assembly 400 has an adjusting component 500 for adjusting the leveling and calendering spacing. Specifically, the leveling roller support arm 406 is adjusted via a T-shaped slider 407. The device slides linearly within the groove 409. The pitch adjustment wheel 501 is mounted on the output shaft of the second drive motor 411. The actuating arm 408 on the leveling roller support arm 406 is inserted into the pitch adjustment arc groove 502. Through the synchronous actuation of the multiple actuating arms 408 by the multiple pitch adjustment arc grooves 502 on the pitch adjustment wheel 501, the inner lining leveling rollers 405 at the top of the multiple leveling roller support arms 406 form a leveling and calendering roller structure with adjustable spacing inside the cement socket tube. Specifically, when the device is placed inside the cement socket tube, the pitch adjustment wheel 501 is first driven to rotate by the second drive motor 411. At this time, the multiple pitch adjustment arc grooves 502 on the pitch adjustment wheel 501 generate an inward actuating force on the leveling roller support arm 406 through the actuating arm 408. In this way, the spacing of the multiple inner lining leveling rollers 405 on the inner lining leveling arm assembly 400 is adjusted, thereby facilitating the placement of the invention inside the cement socket tube.

[0055] Based on the above, in order to ensure the leveling and calendering effect of the PVC lining of the cement socket pipe, the lining leveling arm assembly 400 of this invention performs circumferential leveling and calendering and rotational leveling and calendering on the PVC lining of the cement socket pipe. Through the double-layer rotating structure of this invention, while realizing the circumferential rolling of the PVC lining of the cement socket pipe, it also realizes the rotational leveling and calendering of the PVC lining of the cement socket pipe. Specifically, the rear end of the lining leveling main arm 401 is rotatably mounted on the rotating end plate 107. The fixed gear ring 301, the main arm gear 402 and the center gear 108 are on the same longitudinal plane. The main arm gear 402 is located between the center gear 108 and the fixed gear ring 301. One side of the main arm gear 402 meshes with the inner wall of the fixed gear ring 301, and the other side of the main arm gear 402 meshes with the center gear 108. Through the meshing of the main arm gear 402 with the fixed gear ring 301 and the center gear 108, the lining leveling arm assembly 400 performs circumferential leveling and calendering and rotational leveling and calendering on the PVC lining of the cement socket pipe. The lining leveling arm assembly 400 forms a circumferential and self-rotating structure on the leveling and calendering frame assembly 100. In actual use, the first drive motor 106 drives the central gear 108 to rotate. At this time, the central gear 108 meshes with the main arm gear 402 to drive multiple sets of lining leveling arm assemblies 400. Since the fixed gear ring 301 is fixed, and the outer side of the main arm gear 402 meshes with the inner side of the fixed gear ring 301, when the main arm gear 402 rotates, the outer side of the main arm gear 402 forms a circumferential meshing structure on the inner side of the fixed gear ring 301. At the same time as the circumferential meshing, the main arm gear 402 itself also forms a self-rotating structure. In this way, the circumferential and self-rotating drive of multiple lining leveling rollers 405 on the lining leveling arm assembly 400 is realized, thereby realizing the circumferential leveling and calendering and self-rotating leveling and calendering of the cement socket pipe lining by the lining leveling rollers 405.

[0056] Based on the above, in order to ensure the support placement of the present invention within the cement socket tube, the rear end of the leveling and calendering machine frame assembly 100 of the present invention is provided with a socket tube inner support arm assembly 200 for internal support of different cement socket tubes. Specifically, the inner support arm ring 201 slides linearly back and forth on the calendering machine arm 101, and the auxiliary support arm 205 is rotatably mounted on the side frame 102 at one end away from the inner support main arm 203. The two ends of the push spring 104 respectively abut against the seat cover 105 and the inner support arm ring 201. Through the push of the push spring 104 on the inner support arm ring 201, the multiple inner support main arms 203 on the inner support arm ring 201 form a buffer inner support arm structure on the inner wall of the cement socket tube. In actual use, through the push of the push spring 104 on the inner support arm ring 201, the inner support arm ring 201 is supported on the calendering machine arm. When the calender arm 101 slides backward, the inner support arm ring 201 drives the inner support main arm 203 to move backward. Since the auxiliary support arm 205 limits the middle arm of the inner support main arm 203, the moving wheels 204 at the top of the multiple inner support main arms 203 form an extended inner support structure on the inner wall of the cement socket pipe. In this way, the stability of the multiple sets of inner lining leveling arm assemblies 400 in leveling and calendering the inner wall of the cement socket pipe is ensured, and at the same time, an effective support is provided for leveling and calendering. Meanwhile, the support of the socket pipe inner support arm assembly 200 of the present invention is achieved by the thrust of the push spring 104. When encountering cement socket pipes of different diameters, the automatic extension and retraction of the push spring 104 realizes the adaptive support of the socket pipe inner support arm assembly 200 in cement socket pipes of different diameters.

[0057] It should be noted that the rear end of the calender arm 101 of the present invention is fixed to the existing traction equipment by mounting plate 103 and bolts. At the same time, during traction, the leveling heating chamber assembly 300 is set on the front side of the inner lining leveling arm assembly 400. The leveling heating chamber assembly 300 performs heating pretreatment on the PVC inner lining of the cement socket pipe before leveling and calendering, thereby facilitating the subsequent leveling and calendering of the inner lining leveling arm assembly 400.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PVC leveling and calendering machine for cement socket pipe lining, comprising a leveling and calendering machine frame assembly (100), characterized in that: The rear end of the leveling and calendering frame assembly (100) is provided with a socket tube inner support arm assembly (200) for internal support of different cement socket tubes, and the front end of the leveling and calendering frame assembly (100) is provided with a leveling heating chamber assembly (300) for heating the cement socket tube lining. On the side of the leveling heating chamber assembly (300) away from the socket tube inner support arm assembly (200), multiple sets of inner lining leveling arm assemblies (400) for rolling and flattening the cement socket tube lining are provided. The inner lining leveling arm assembly (400) performs circumferential leveling and calendering and self-rotation leveling and calendering on the cement socket tube lining. The inner lining leveling arm assembly (400) is provided with a spacing adjustment assembly (500) for adjusting the leveling and calendering spacing.

2. The PVC leveling and calendering machine for cement socket pipe lining according to claim 1, characterized in that: The leveling and calendering machine frame assembly (100) includes a calendering arm (101), a side frame (102) and a mounting plate (103) are fixedly installed at the rear end of the calendering arm (101), a seat cover (105) is fixedly installed at the front end of the calendering arm (101), a push spring (104) is sleeved on the front arm body of the calendering arm (101), a rotating end plate (107) is rotatably installed at the front end of the seat cover (105), a first drive motor (106) is fixedly installed at the rear end of the rotating end plate (107), and a central gear (108) is installed on the output shaft of the first drive motor (106).

3. A PVC leveling and calendering machine for cement socket pipe lining according to claim 2, characterized in that: The socket tube inner support arm assembly (200) includes an inner support arm ring (201), a plurality of arm ring side frames (202) are fixedly provided on one side of the inner support arm ring (201), an inner support main arm (203) is rotatably provided on the arm ring side frame (202), a moving wheel (204) is provided on the top of the inner support main arm (203), and an auxiliary support arm (205) is hinged in the middle of the inner support main arm (203); The leveling heating chamber assembly (300) includes a fixed toothed ring (301), a heating chamber (302) is fixedly disposed on the outer wall of the fixed toothed ring (301), and a heating rod (303) is fixedly disposed on the inner wall of the heating chamber (302).

4. A PVC leveling and calendering machine for cement socket pipe lining according to claim 3, characterized in that: The lining leveling arm assembly (400) includes an lining leveling main arm (401) and a leveling roller support arm (406). The rear end of the lining leveling main arm (401) is fixedly provided with a main arm gear (402), and the front end of the lining leveling main arm (401) is fixedly provided with a main arm end frame (403). The front end of the main arm end frame (403) is fixedly provided with a limit end frame (410) through a lateral support arm (404). The lining leveling main arm (401) is provided with a T-shaped slide groove (409). The rear end of the limit end frame (410) is fixedly provided with a second drive motor (411). The top of the leveling roller support arm (406) is provided with an lining leveling roller (405), and the bottom of the leveling roller support arm (406) is fixedly provided with a toggle arm (408). The rear end of the leveling roller support arm (406) is fixedly provided with a T-shaped slider (407).

5. A PVC leveling and calendering machine for cement socket pipe lining according to claim 4, characterized in that: The pitch adjustment assembly (500) includes a pitch adjustment wheel (501), on which a pitch adjustment arc groove (502) is formed.

6. A PVC leveling and calendering machine for cement socket pipe lining according to claim 5, characterized in that: The inner support arm ring (201) slides linearly back and forth on the calender arm (101). The auxiliary support arm (205) is rotatably mounted on the side frame (102) at one end away from the inner support main arm (203). The two ends of the push spring (104) abut against the seat cover (105) and the inner support arm ring (201) respectively. Through the push spring (104) pushing the inner support arm ring (201), the multiple inner support main arms (203) on the inner support arm ring (201) form a buffer inner support arm structure on the inner wall of the cement socket pipe.

7. A PVC leveling and calendering machine for cement socket pipe lining according to claim 6, characterized in that: The fixed toothed ring (301) is fixed on the end face frame of the seat cover (105) away from the calender arm (101).

8. A PVC leveling and calendering machine for cement socket pipe lining according to claim 7, characterized in that: The leveling roller support arm (406) slides linearly in the T-shaped groove (409) via the T-shaped slider (407). The pitch adjustment wheel (501) is mounted on the output shaft of the second drive motor (411). The actuating arm (408) on the leveling roller support arm (406) is inserted into the pitch adjustment arc groove (502). Through the synchronous actuation of the multiple actuating arms (408) by the multiple pitch adjustment arc grooves (502) on the pitch adjustment wheel (501), the inner lining leveling rollers (405) at the top of the multiple leveling roller support arms (406) form a leveling and calendering roller structure with adjustable spacing in the cement socket tube.

9. A PVC leveling and calendering machine for cement socket pipe lining according to claim 8, characterized in that: The rear end of the inner lining leveling main arm (401) is rotatably mounted on the rotating end plate (107). The fixed gear ring (301), the main arm gear (402) and the center gear (108) are on the same longitudinal plane. The main arm gear (402) is located between the center gear (108) and the fixed gear ring (301). One side of the main arm gear (402) meshes with the inner wall of the fixed gear ring (301), and the other side of the main arm gear (402) meshes with the center gear (108).

10. A PVC leveling and calendering machine for cement socket pipe lining according to claim 9, characterized in that: Through the meshing of the main arm gear (402) with the fixed gear ring (301) and the center gear (108), the inner lining leveling arm assembly (400) forms a circumferential and self-rotating structure on the leveling and calendering frame assembly (100), and the rear end of the calendering arm (101) is fixed to the existing traction equipment by the mounting plate (103) and bolts.

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