Internal support mechanism for HDPE double-wall corrugated pipe machining

Abstract

This invention relates to the field of HDPE double-wall corrugated pipe processing technology, specifically to an internal support mechanism for HDPE double-wall corrugated pipe processing. The mechanism includes a support cylinder with at least two arc-shaped clamping plates symmetrically and slidably connected through its top and bottom walls. A drilling anti-deviation component is provided on the side of the arc-shaped clamping plates near the inner cavity of the HDPE double-wall corrugated pipe end face. This component includes an arc-shaped groove formed on the outer wall of the arc-shaped clamping plate, with a main positioning plate slidably connected to the inner cavity of the groove. A main positioning hole is formed through the center of the main positioning plate. An auxiliary positioning plate, fixedly connected to the main positioning plate, is provided on the side of the arc-shaped clamping plate away from the inner cavity of the HDPE double-wall corrugated pipe end face. The auxiliary positioning plate has auxiliary positioning holes that correspond one-to-one with the main positioning holes. This invention, by setting up the drilling anti-deviation component, facilitates ensuring the overall drilling accuracy of the equipment. Furthermore, this invention allows for adaptive adjustment of the drilling position of the HDPE double-wall corrugated pipe according to the user's actual needs.

Description

Technical Field

[0001] This invention relates to the field of HDPE double-wall corrugated pipe processing technology, specifically to the internal support mechanism for HDPE double-wall corrugated pipe processing. Background Technology

[0002] HDPE double-wall corrugated pipe is a new type of lightweight pipe made of high-density polyethylene. It features light weight, high pressure resistance, good toughness, fast construction, and long service life. Its excellent pipe wall structure design significantly reduces costs compared to other pipe structures.

[0003] In the production, manufacturing, and installation of HDPE double-wall corrugated pipes, it is usually necessary to drill holes or grooves on the outer peripheral wall of the pipe ends. In the existing technology, a utility model patent with publication number CN217552524U, entitled "An Auxiliary Device for Drilling HDPE Double-Wall Corrugated Pipes," includes a corrugated pipe body and an auxiliary support assembly. The auxiliary support assembly is inserted into one end of the corrugated pipe body. The auxiliary support assembly includes a support base, a support column, a rear connecting cover, a support cylinder, and a guide block. The support cylinder is hollow. The device features a tubular structure. An auxiliary support assembly supports and fixes the corrugated pipe body, and a support cylinder within the assembly provides low-level support to the ends of the corrugated pipe body. This prevents the ends of the corrugated pipe body from deforming and becoming out of round under the pressure of drilling, ensuring drilling quality. Additionally, two support blocks are installed inside the support cylinder, which, when lifted by a bidirectional telescopic cylinder, tightly support and abut against the corrugated parts of the corrugated pipe body, effectively preventing deformation and out-of-roundness at the corrugated parts and further ensuring drilling quality.

[0004] This patent uses a bidirectional telescopic cylinder to lift and tightly support the corrugated part of the corrugated pipe body, effectively preventing deformation and loss of roundness of the corrugated part of the corrugated pipe body, and further ensuring the drilling quality; however, the equipment of this patent still has the following technical defects in use: (1) This patent uses the relative movement of two support blocks to facilitate the internal support of the HDPE double wall corrugated pipe, and through the through hole in the middle of the support block, it is beneficial to the subsequent drilling work. However, since the HDPE double wall corrugated pipe is a non-transparent pipe, it is inconvenient for the staff to accurately determine the drilling position of the HDPE double wall corrugated pipe, which easily causes the actual drilling position of the equipment to deviate, thereby reducing the drilling accuracy of the equipment; (2) The drilling position of this patent is a fixed position, and the two support blocks cannot be rotated. If the drilling position of the equipment needs to be adjusted, the HDPE double wall corrugated pipe needs to be re-fixed. The overall operation steps are relatively complicated, which makes it inconvenient to adjust the drilling position of the equipment according to the actual needs of the user. Summary of the Invention

[0005] The purpose of this invention is to provide an internal support mechanism for the processing of HDPE double-wall corrugated pipes.

[0006] The technical problem solved by this invention is:

[0007] (1) The existing equipment has low overall drilling accuracy due to the lack of a drilling anti-offset component;

[0008] (2) The existing equipment is not convenient to adapt the drilling position of HDPE double wall corrugated pipe to the actual needs of users.

[0009] This invention can be achieved through the following technical solution: An internal support mechanism for processing HDPE double-wall corrugated pipes includes a support cylinder. At least two arc-shaped clamping plates are symmetrically and slidably connected through the top and bottom walls of the support cylinder. A perforated anti-deviation component is provided on the side of the arc-shaped clamping plate near the inner cavity of the HDPE double-wall corrugated pipe end face. The perforated anti-deviation component includes an arc-shaped groove formed on the outer wall of the arc-shaped clamping plate. A main positioning plate is slidably connected to the inner cavity of the arc-shaped groove. A main positioning hole is formed through the center of the main positioning plate. An auxiliary positioning plate is provided on the side of the arc-shaped clamping plate away from the inner cavity of the HDPE double-wall corrugated pipe end face, and is fixedly connected to the main positioning plate. An auxiliary positioning hole, corresponding one-to-one with the main positioning hole, is formed through the center of the auxiliary positioning plate. A first anti-slip pad and a second anti-slip pad are respectively installed on the side of the main positioning plate and the auxiliary positioning plate used to clamp the HDPE double-wall corrugated pipe. The first and second anti-slip pads are preferably rubber pads. The cooperation of the first and second anti-slip pads prevents damage to the outer surface of the HDPE double-wall corrugated pipe when clamping it.

[0010] A further technical improvement of the present invention is that an adjustment component is provided at the center of one side of the supporting cylinder to facilitate the sliding of the main positioning plate and the auxiliary positioning plate. The adjustment component includes a fixed column fixedly connected to the center of one side of the supporting cylinder. The outer peripheral wall of the fixed column is respectively fixedly sleeved with a first rotating cylinder and a second rotating cylinder fixedly connected to the main positioning plate and the auxiliary positioning plate. When the main positioning plate or the auxiliary positioning plate is slid, the corresponding first rotating cylinder and second rotating cylinder will rotate at a certain angle. Through the independent setting of the first rotating cylinder and the second rotating cylinder, it is convenient to adaptably slide the main positioning plate and the auxiliary positioning plate according to the actual use requirements.

[0011] A further technical improvement of the present invention is that: a first transmission plate and a second transmission plate are fixedly installed on the outer peripheral walls of the first rotating drum and the second rotating drum, respectively, and the inner cavities of the first transmission plate and the second transmission plate are provided with adapting components for adjusting the height of the auxiliary positioning plate.

[0012] A further technical improvement of the present invention is that: the adapting component includes a linkage block slidably connected to the inner cavity of the first transmission plate or the second transmission plate, the linkage block is fixedly connected to the auxiliary positioning plate, and a connecting spring fixedly installed on the inner wall of the first transmission plate or the second transmission plate is fixedly connected to the linkage block. By adjusting the height of the auxiliary positioning plate, it is convenient to limit the outer wall of the HDPE double-wall corrugated pipe to be drilled.

[0013] A further technical improvement of the present invention is that the linkage block is fixed to the first transmission plate or the second transmission plate by a positioning pin.

[0014] A further technical improvement of the present invention is that: a connecting plate is slidably connected to the side of the first transmission plate or the second transmission plate away from the auxiliary positioning plate, the connecting plate is fixedly connected to the linkage block, and a positioning block assembly is fixedly installed on the side of the connecting plate near the first rotating cylinder or the second rotating cylinder, and a positioning groove that cooperates with the positioning block assembly is opened on the outer peripheral wall of the fixed column.

[0015] A further technical improvement of the present invention is that a collection drawer for collecting waste is slidably connected to the bottom end of the inner cavity of the arc-shaped clamping plate.

[0016] A further technical improvement of the present invention is that: the inner cavity of the supporting cylinder is provided with a driving assembly for the relative movement of the two arc-shaped clamping plates. The driving assembly includes an internal gear ring rotatably connected to the inner cavity of the supporting cylinder, and the inner cavity of the supporting cylinder is rotatably connected with a first gear having the same number as the arc-shaped clamping plates. The outer wall of the internal gear ring is slidably connected with a rack that meshes with the first gear, and the rack is fixedly connected to the arc-shaped clamping plates.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This invention facilitates stable clamping of the inner wall of HDPE double-wall corrugated pipe through the relative movement of two arc-shaped clamping plates. After clamping, the position of the main positioning plate in the two arc-shaped clamping plates is adjusted according to the actual drilling position required by the equipment. During adjustment, the auxiliary positioning plate allows the user to easily observe whether the drilling position is aligned, thus ensuring the drilling accuracy of the equipment. At the same time, the indicator marks engraved on the outer wall of the supporting cylinder further ensure the overall drilling accuracy of the equipment. After the drilling position is aligned, the positioning pin is removed, and the elastic force of the connecting spring makes the auxiliary positioning plate fit tightly against the outer wall of the HDPE double-wall corrugated pipe, thus facilitating its outer wall limitation. The movement of the auxiliary positioning plate facilitates the synchronous movement of the connecting plate, and the movement of the connecting plate facilitates the positioning block assembly to enter the corresponding positioning groove in the inner cavity of the fixed column, thus facilitating the position limitation of the first or second transmission plate. Stable clamping of the inner and outer walls of the HDPE double-wall corrugated pipe facilitates subsequent drilling work, and the alignment adjustment of the drilling position further ensures the drilling accuracy of the equipment, making it convenient to use.

[0019] 2. This invention allows for convenient and adaptive adjustment of the perforation position of HDPE double-wall corrugated pipes according to the user's actual needs. During adjustment, the first or second transmission plate is slid to make the main positioning plate slide synchronously. While the first or second transmission plate is sliding, the auxiliary positioning plate on it is also slid synchronously, thereby enabling the equipment to conveniently meet the user's needs and be easy to use. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a side view of the supporting cylinder structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the telescopic component of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the arc-shaped clamping plate of the present invention;

[0025] Figure 5 For the present invention Figure 4 A magnified view of a section at point A in the middle;

[0026] Figure 6 This is a side view of the structure of the present invention;

[0027] Figure 7 For the present invention Figure 6 A magnified view of a section at point B in the middle;

[0028] Figure 8 This is a partial structural diagram of the fixing column of the present invention.

[0029] In the picture:

[0030] 1. Adjustable telescopic rod; 11. Support plate;

[0031] 2. Support cylinder; 21. Internal gear ring; 22. First gear; 23. Rack; 24. Mounting plate; 25. Telescopic component; 251. Outer sleeve; 252. Inner sleeve; 253. Support spring; 26. External gear ring; 27. Second gear; 28. Rotating rod;

[0032] 3. Arc-shaped clamping plate; 31. First anti-slip pad; 32. Arc-shaped groove; 33. Strip groove; 34. Main positioning plate; 35. Synchronizing block; 36. Main positioning hole; 37. Collection drawer; 38. Discharge hole;

[0033] 4. Fixed column; 41. First rotating drum; 42. Second rotating drum; 43. First transmission plate; 44. Second transmission plate; 45. Sliding groove; 46. Connecting spring; 47. Linkage block; 48. Auxiliary positioning assembly; 481. Auxiliary positioning plate; 482. Second anti-slip pad; 483. Auxiliary positioning hole; 49. Connecting plate; 410. Positioning block assembly; 411. Positioning groove;

[0034] 5. Directional signs;

[0035] 6. Positioning pin. Detailed Implementation

[0036] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0037] Please see Figure 1 As shown, the internal support mechanism for HDPE double-wall corrugated pipe processing includes a support cylinder 2 disposed on the inner side of the end face of the HDPE double-wall corrugated pipe. Support plates 11 are fixedly installed on both sides of the support cylinder 2. An adjustable telescopic rod 1 is fixedly installed at the bottom end of the support plate 11. The height of the support cylinder 2 can be easily adjusted by adjusting the telescopic rod 1, thereby facilitating the adaptation to different installation heights of HDPE double-wall corrugated pipes.

[0038] Please see Figure 1 As shown, the top and bottom walls of the supporting cylinder 2 are symmetrically and slidably connected with at least two arc-shaped clamping plates 3 for supporting the corrugations on the inner wall of the HDPE double-wall corrugated pipe.

[0039] Please see Figure 1 As shown, the arc-shaped clamping plate 3 has a first anti-slip pad 31 installed on the side near the inner wall of the HDPE double-wall corrugated pipe.

[0040] Please see Figure 1-2 As shown, the inner cavity of the supporting cylinder 2 is provided with a driving assembly that causes the two arc-shaped clamping plates 3 to move relative to each other. The driving assembly includes an internal gear ring 21 rotatably connected to the inner cavity of the supporting cylinder 2. The inner cavity of the supporting cylinder 2 and located in the inner cavity of the internal gear ring 21 is rotatably connected with a first gear 22, the same number as the arc-shaped clamping plates 3. The first gear 22 meshes with the internal gear ring 21. The outer wall of the internal gear ring 21 is slidably connected with a rack 23 that meshes with the first gear 22. One side of the rack 23 is fixedly connected to a mounting plate 24 that is fixedly connected to the arc-shaped clamping plate 3. The rack 23 is fixedly connected to the mounting plate 24.

[0041] Please see Figure 2As shown, the inner cavity of the supporting cylinder 2 is provided with a linkage component that causes the outer gear ring 26 to rotate. The linkage component includes a second gear 27 that is rotatably connected to the inner cavity of the supporting cylinder 2 and meshes with the outer gear ring 26. The rotating rod 28 in the second gear 27 passes through the supporting cylinder 2 and extends to the outside of the supporting cylinder 2.

[0042] Please see Figure 2-3 As shown, telescopic components 25 are provided between the arc-shaped clamping plate 3 and the supporting cylinder 2 and on both sides of the mounting plate 24. The telescopic component 25 includes an outer sleeve 251 fixedly connected to the inner cavity of the supporting cylinder 2, an inner sleeve 252 fixedly connected to the arc-shaped clamping plate 3 and slidably connected to the inner cavity of the outer sleeve 251, and a support spring 253 fixedly installed on the inner wall of the outer sleeve 251 and fixedly connected to the inner sleeve 252.

[0043] Please see Figure 4 As shown, the arc-shaped clamping plate 3 has an arc-shaped groove 32 on one side near the inner wall of the HDPE double-wall corrugated pipe. The inner cavity of the first anti-slip pad 31 has a connecting groove that communicates with the arc-shaped groove 32. The two inner side walls of the arc-shaped groove 32 are slidably connected to the main positioning plate 34. The inner cavity of the main positioning plate 34 has a main positioning hole 36. The number of main positioning holes 36 can be a single one, which is located at the center of the main positioning plate 34. The number of main positioning holes 36 can also be two or more, which are evenly distributed in the inner cavity of the main positioning plate 34. The inner cavity of the arc-shaped clamping plate 3 has multiple discharge holes 38 that cooperate with the main positioning holes 36.

[0044] More specifically, the diameter of the discharge hole 38 is slightly larger than the diameter of the main positioning hole 36, thereby facilitating the entry of waste material into the inner cavity of the discharge hole 38.

[0045] Please see Figure 4 As shown, the bottom end of the inner cavity of the arc-shaped clamping plate 3 is slidably connected to a collection drawer 37 for receiving waste material in the discharge hole 38.

[0046] Please see Figure 4 As shown, two synchronization blocks 35 are symmetrically fixedly connected to both sides of the main positioning plate 34, and strip grooves 33 for sliding of the synchronization blocks 35 are provided through both sides of the outer wall of the arc-shaped clamping plate 3.

[0047] Please see Figure 5-7As shown, a first transmission plate 43 and a second transmission plate 44 are fixedly connected to one side of two synchronous blocks 35 near the end face of the HDPE double-wall corrugated pipe, respectively. An adjustment assembly is provided on the outer wall of the support cylinder 2 to facilitate the sliding of the first transmission plate 43 and the second transmission plate 44. The adjustment assembly includes a fixed column 4 fixedly connected to the center of the outer wall of the support cylinder 2. A first rotating cylinder 41 and a second rotating cylinder 42 are rotatably connected to the outer peripheral wall of the fixed column 4, respectively. The first transmission plate 43 is fixedly connected to the outer peripheral wall of the first rotating cylinder 41, and the second transmission plate 44 is fixedly connected to the second rotating cylinder 42.

[0048] Please see Figure 6 As shown, the outer edge of the arc-shaped clamping plate 3 is engraved with an indicator mark 5 indicating the sliding angle of the first transmission plate 43 and the second transmission plate 44.

[0049] Please see Figure 5 As shown, each of the first transmission plate 43 and the second transmission plate 44 is provided with an auxiliary positioning assembly 48 for clamping the outer wall of the HDPE double-wall corrugated pipe. The auxiliary positioning assembly 48 includes two auxiliary positioning plates 481 that are slidably connected to one side of the first transmission plate 43 and the second transmission plate 44. A second anti-slip pad 482 is fixedly installed on the side of the two auxiliary positioning plates 481 that is close to the outer wall of the HDPE double-wall corrugated pipe. The inner cavity of the two auxiliary positioning plates 481 is provided with auxiliary positioning holes 483 that correspond one-to-one with the main positioning holes 36. The inner cavity of the second anti-slip pad 482 is provided with through holes that correspond one-to-one with the auxiliary positioning holes 483.

[0050] Please see Figure 5 As shown, a linkage block 47 is fixedly connected to one side of each of the two auxiliary positioning plates 481. The inner cavity of the first transmission plate 43 or the second transmission plate 44 is provided with a sliding groove 45 for the linkage block 47 to slide. A connecting spring 46 fixedly connected to the linkage block 47 is fixedly installed on the inner wall of the sliding groove 45.

[0051] Please see Figure 1 , 4 As shown in Figure 5, the linkage block 47 is fixed to the first transmission plate 43 or the second transmission plate 44 by a positioning pin 6.

[0052] Please see Figure 6-8 As shown, a connecting plate 49 that is fixedly connected to the linkage block 47 is slidably connected to the other side of the first transmission plate 43 or the second transmission plate 44. A positioning block group 410 is fixedly installed on the side of the connecting plate 49 near the first transmission plate 43 or the second transmission plate 44. Positioning grooves 411 that cooperate with the positioning block group 410 are evenly opened on the outer peripheral wall of the fixing column 4.

[0053] In use, the entire device is transported to the designated work location. The height of the device is first adjusted according to the height of the HDPE double-wall corrugated pipe. After adjustment, the supporting cylinder 2 is placed inside the end face of the HDPE double-wall corrugated pipe. The height is then adjusted according to the diameter of the HDPE double-wall corrugated pipe. During adjustment, the rotating rod 28 is rotated to make the second gear 27 rotate synchronously. The second gear 27 drives the outer gear ring 26 to rotate through meshing. The rotation of the outer gear ring 26 drives the inner gear ring 21 fixedly connected to it to rotate. The inner gear ring 21 drives the two first gears 22 to rotate through meshing. When the first gears 22 rotate, the two racks 23 meshing with the first gears 22 move relative to each other through meshing. The relative movement of the two racks 23 makes the arc-shaped clamping plate 3 stably clamp the inner side of the end face of the HDPE double-wall corrugated pipe.

[0054] After clamping the inner side of the HDPE double-wall corrugated pipe end face, the position of the main positioning plate 34 in the two arc-shaped clamping plates 3 can be adjusted according to the actual drilling position required by the equipment. During adjustment, the first transmission plate 43 or the second transmission plate 44 is slid to make the main positioning plate 34 slide synchronously. At the same time as the first transmission plate 43 or the second transmission plate 44 slides, the auxiliary positioning plate 481 on it slides synchronously. The auxiliary positioning plate 481 makes it easy for the user to observe whether the drilling position is aligned. At the same time, the indicator mark 5 engraved on the outer wall of the supporting cylinder 2 facilitates further... To ensure the overall drilling accuracy of the equipment, after the drilling position is aligned, the positioning pin 6 is removed. Through the elastic force of the connecting spring 46, the auxiliary positioning plate 481 is made to fit tightly against the outer wall of the HDPE double-wall corrugated pipe, thus facilitating its outer wall limitation. The movement of the auxiliary positioning plate 481 facilitates the synchronous movement of the connecting plate 49. The movement of the connecting plate 49 facilitates the positioning block group 410 to enter the corresponding positioning groove 411 in the inner cavity of the fixed column 4, thereby facilitating the position limitation of the first transmission plate 43 or the second transmission plate 44, which is beneficial to the subsequent drilling work of the equipment.

[0055] After the position of the main positioning plate 34 is adjusted, drilling can be performed. When drilling, the brick used to drill the hole first passes through the auxiliary positioning plate 481 and then through the HDPE double-wall corrugated pipe and the main positioning plate 34 in sequence. The waste generated during the drilling process will enter the inner cavity of the collection drawer 37 through the discharge hole 38. After drilling, the waste can be discharged by sliding the collection drawer 37.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An internal support mechanism for processing HDPE double-wall corrugated pipes, comprising a support cylinder (2), wherein at least two arc-shaped clamping plates (3) are symmetrically and slidably connected through the top and bottom walls of the support cylinder (2), characterized in that: The arc-shaped clamping plate (3) is provided with a perforation anti-deviation component on the side of the inner cavity of the HDPE double-wall corrugated pipe end face. The perforation anti-deviation component includes an arc-shaped groove (32) opened on the outer wall of the arc-shaped clamping plate (3). The inner cavity of the arc-shaped groove (32) is slidably connected to a main positioning plate (34). The center of the main positioning plate (34) is provided with a main positioning hole (36). The side of the arc-shaped clamping plate (3) away from the inner cavity of the HDPE double-wall corrugated pipe end face is provided with an auxiliary positioning plate (481) fixedly connected to the main positioning plate (34). The center of the auxiliary positioning plate (481) is provided with an auxiliary positioning hole (483) that corresponds one-to-one with the main positioning hole (36). The center of one side of the support cylinder (2) is provided with an adjustment component to facilitate the sliding of the main positioning plate (34) and the auxiliary positioning plate (481). The adjustment component includes a fixed column (4) fixedly connected to the center of one side of the support cylinder (2). The outer peripheral wall of the fixed column (4) is respectively fixedly sleeved with a first rotating cylinder (41) and a second rotating cylinder (42) fixedly connected to the main positioning plate (34) and the auxiliary positioning plate (481). The outer peripheral walls of the first rotating drum (41) and the second rotating drum (42) are respectively fixedly installed with a first transmission plate (43) and a second transmission plate (44). The inner cavities of the first transmission plate (43) and the second transmission plate (44) are provided with an adapting component for adjusting the height of the auxiliary positioning plate (481). The adaptor includes a linkage block (47) that is slidably connected to the inner cavity of the first transmission plate (43) or the second transmission plate (44). The linkage block (47) is fixedly connected to the auxiliary positioning plate (481). The inner wall of the first transmission plate (43) or the second transmission plate (44) is fixedly connected to a connecting spring (46) that is fixedly installed with the linkage block (47).

2. The internal support mechanism for processing HDPE double-wall corrugated pipes according to claim 1, characterized in that, The linkage block (47) is fixed to the first transmission plate (43) or the second transmission plate (44) by a positioning pin (6).

3. The internal support mechanism for processing HDPE double-wall corrugated pipes according to claim 1, characterized in that, A connecting plate (49) is slidably connected to the side of the first transmission plate (43) or the second transmission plate (44) away from the auxiliary positioning plate (481). The connecting plate (49) is fixedly connected to the linkage block (47). A positioning block group (410) is fixedly installed on the side of the connecting plate (49) near the first rotating cylinder (41) or the second rotating cylinder (42). The outer peripheral wall of the fixed column (4) is provided with a positioning groove (411) that cooperates with the positioning block group (410).

4. The internal support mechanism for processing HDPE double-wall corrugated pipes according to claim 1, characterized in that, The bottom end of the inner cavity of the arc-shaped clamping plate (3) is slidably connected to a collection drawer (37) for collecting waste.

5. The internal support mechanism for processing HDPE double-wall corrugated pipes according to claim 1, characterized in that, The inner cavity of the supporting cylinder (2) is provided with a driving assembly that enables the two arc-shaped clamping plates (3) to move relative to each other. The driving assembly includes an internal gear ring (21) rotatably connected to the inner cavity of the supporting cylinder (2). The inner cavity of the supporting cylinder (2) is rotatably connected with the same number of first gears (22) as the arc-shaped clamping plates (3). The outer wall of the internal gear ring (21) is slidably connected with a rack (23) that meshes with the first gear (22). The rack (23) is fixedly connected to the arc-shaped clamping plates (3).

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