Reinforced flaring plastic corrugated pipe and forming mold thereof
By designing reinforcement sections and transition sections in plastic bellows and setting sealing rings between the socket and the socket, the problems of flaring are easily deformed and gap blocked, and high-strength connection and sealing are achieved.
Patent Information
- Application Number
- CN202422608268.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-28
AI Technical Summary
The existing plastic double-wall corrugated pipe has low flaring strength, is prone to deformation during storage and transportation, and is prone to gaps when the socket is connected to the flaring, causing blockage.
A reinforced flared plastic corrugated pipe is designed, including a body tube and a flared pipe arranged integrally. The crests and troughs are arranged alternately on the outer wall of the body tube. The flared pipe is composed of multiple reinforcement sections and transition sections. Multi-layer annular reinforcement ribs are provided. When the socket and the socket are connected, the first peak and horizontal angle between the horizontal is 35°-40°, and a sealing ring is set between the socket and the socket.
The structural strength of the flared tube is improved, the flared deformation is avoided, the seamless connection between the socket and the socket is achieved, the debris accumulation and blockage are prevented, and the sealing of the connection is enhanced.
Smart Images
Figure CN223153016U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plastic double-wall corrugated pipes, and in particular relates to a reinforced expanded plastic corrugated pipe and a forming die thereof. Background Art
[0002] HDPE double-wall corrugated pipes are widely used in municipal drainage, sewage engineering, farmland irrigation, drainage engineering and other fields.
[0003] Plastic double-wall corrugated pipes are widely used in municipal drainage, sewage engineering, agricultural irrigation, diversion engineering and other fields due to their light weight, smooth inner wall, low flow resistance, high pressure bearing and corrosion resistance.
[0004] The conventional plastic double-wall corrugated pipe connection method is to use the flare (also known as the socket) and the spigot to fit together and install a sealing ring between the two. After producing the entire plastic double-wall corrugated pipe with a spigot and flare, it is necessary to cut off part of the pipe to form a spigot pipe and a socket pipe to achieve the connection size required by the customer, and then insert the spigot part into the socket to complete the construction.
[0005] The advantage of this connection method is that it is simple and easy to construct. It only requires placing a rubber sealing ring at a predetermined position of the finished plastic pipe and then connecting the pipe spigot and flared end.
[0006] However, according to market feedback, this connection method has the following two main defects in use:
[0007] 1. The flaring (socket) strength is low, and the flaring of the above connection method is easy to deform during storage and transportation, affecting the quality of the pipe;
[0008] 2. The socket cannot be inserted to the bottom, and there is a gap between the bottom of the socket crest and the inner wall of the flared mouth, which will accumulate debris and cause pipe blockage. Especially in the sewage pipe, there may be branches, wires and other debris embedded in the gap, causing more debris to accumulate and block the pipe, increasing the cost of inspection and maintenance.
[0009] In order to solve the problems of low flaring strength of double-wall corrugated pipes in the prior art and deformation of the flaring caused by flaring and plugging in the double-wall corrugated pipes, it is necessary to improve the structure of the traditional plastic double-wall corrugated pipe. Accordingly, the traditional molding module cannot produce new plastic corrugated pipes, so it is necessary to improve the traditional corrugated pipe molding module in order to mold new plastic double-wall corrugated pipes. Summary of the invention
[0010] The first technical problem to be solved by the utility model is to provide a reinforced expanded plastic corrugated pipe to solve the problem that the expanded mouth of the double-wall corrugated pipe connected during use is easy to deform.
[0011] To solve the above first technical problem, the present utility model adopts the following technical solutions:
[0012] A reinforced flared plastic corrugated pipe, comprising a main pipe and a flared pipe integrally provided. The main pipe includes an inner wall and an outer wall, and wave crests and wave troughs are alternately arranged on the outer wall; the flared pipe includes a first main pipe flaring transition section, a short reinforcing section, a long reinforcing section, and a second main pipe flaring transition section connected in sequence; during use, the part to be cut is cut off, and the part to be cut sequentially includes a part of the main pipe and the first main pipe flaring transition section; after cutting off the part to be cut, the flared pipe forms a socket, and a part of the main pipe forms a spigot, and the spigot is inserted into the socket; the part of the main pipe forming the spigot is defined as an insertion section, the first wave crest of the insertion section facing the socket is defined as the first wave crest, and the included angle between the side wall of the first wave crest facing the socket and the horizontal direction is α, and the α is 35° to 40°.
[0013] Furthermore, a sealing ring is arranged between the wave trough of the spigot and the socket.
[0014] Furthermore, one end of the first main pipe flaring transition section is connected to the main pipe, the other end is connected to the short reinforcing section, the long reinforcing section is connected to the short reinforcing section through a reinforcing transition section, the other end of the long reinforcing section is connected to the second main pipe flaring transition section, and the other end of the second main pipe flaring transition section is connected to the main pipe; the inner diameter of the first main pipe flaring transition section gradually increases from the wave trough of the main pipe to the short reinforcing section; the inner diameter of the second main pipe flaring transition section gradually increases from the wave trough of the main pipe to the long reinforcing section; the inner diameter of the reinforcing transition section gradually decreases from the short reinforcing section to the long reinforcing section; first annular reinforcing ribs are arranged on the outer walls of the first main pipe flaring transition section, the reinforcing transition section, and the second main pipe flaring transition section; second annular reinforcing ribs are arranged on the outer wall of the short reinforcing section; there are a plurality of third annular reinforcing ribs and a plurality of fourth annular reinforcing ribs on the outer wall of the long reinforcing section, and the cross sections of the third annular reinforcing ribs and the fourth annular reinforcing ribs are trapezoidal; two of the third annular reinforcing ribs are respectively defined as the third annular reinforcing rib A and the third annular reinforcing rib B, and a plurality of the fourth annular reinforcing ribs are arranged between the third annular reinforcing rib A and the third annular reinforcing rib B.
[0015] Furthermore, the cross-sectional width of the third annular reinforcing rib is greater than the cross-sectional width of the fourth annular reinforcing rib.
[0016] Furthermore, the cross section of the first annular reinforcing rib is arc-shaped.
[0017] Furthermore, the cross section of the second annular reinforcing rib on the outer wall of the short reinforcing section is a rectangular cross section.
[0018] Furthermore, a draft angle facilitating demolding is provided on the inner wall of the long reinforcing section.
[0019] Furthermore, the long reinforcing section successively includes a first reinforcing section, a sealing section, and a second reinforcing section. The first reinforcing section is connected to the reinforcing transition section, and the second reinforcing section is connected to the second main body flaring transition section. The long reinforcing section between the third annular reinforcing rib A and the third annular reinforcing rib B is defined as the sealing section. As the same technical concept, the second technical problem to be solved by the present invention is to provide a forming die for a reinforced flared plastic corrugated pipe for manufacturing a reinforced flared plastic corrugated pipe.
[0020] To solve the above second technical problem, the present invention adopts the following technical solutions:
[0021] A forming die for a reinforced flared plastic corrugated pipe for producing the reinforced flared plastic corrugated pipe as described above. The forming die includes: a plurality of main body module groups for forming the main body pipe and a plurality of flaring module groups for forming the flared pipe. The cavity of the main body module group includes alternately arranged annular convex rings and annular concave rings. The annular convex rings form the troughs of the main body pipe, and the annular concave rings form the peaks of the main body pipe. The annular concave ring forming the first peak is defined as the first annular concave ring. The cavity of the flaring module group includes: a first transition section cavity for forming the first main body flaring transition section, a short reinforcing section cavity for forming the short reinforcing section, a reinforcing transition section cavity for forming the reinforcing transition section, a long reinforcing section cavity for forming the long reinforcing section, and a second transition section cavity for forming the second main body flaring transition section.
[0022] Furthermore, the first transition section cavity and the second transition section cavity are arranged as a first tapered pipe cavity. A plurality of arc-shaped inner concave rings for forming the first annular reinforcing rib are provided in the first tapered pipe cavity. The reinforcing transition section cavity is arranged as a second tapered pipe cavity. The arc-shaped inner concave ring for forming the first annular reinforcing rib is provided in the second tapered pipe cavity. A rectangular inner concave ring for forming the second annular reinforcing rib is provided on the inner wall of the short reinforcing section cavity. A first trapezoidal inner concave ring for forming the third annular reinforcing rib and a second trapezoidal inner concave ring for forming the fourth annular reinforcing rib are provided on the inner wall of the long reinforcing section cavity.
[0023] After adopting the above technology, the beneficial effects of the present invention are:
[0024] The reinforced flared plastic corrugated pipe of the present utility model comprises a main pipe and a flared pipe which are integrally arranged. The main pipe includes an inner wall and an outer wall, and wave crests and wave troughs are arranged alternately on the outer wall; the flared pipe includes a first main pipe flared transition section, a short reinforcement section, a long reinforcement section, and a second main pipe flared transition section which are connected in sequence; during use, a to-be-cut part is cut off, and the to-be-cut part sequentially includes a part of the main pipe and the first main pipe flared transition section; after cutting off the to-be-cut part, the flared pipe forms a socket, a part of the main pipe forms a spigot, and the spigot is inserted into the socket; the part of the main pipe that forms the spigot is defined as an insertion section, the first wave crest of the insertion section facing the socket is defined as the first wave crest, and the included angle between the side wall of the first wave crest facing the socket and the horizontal direction is α, and α is 35°-40°.
[0025] The overall structural strength of the reinforced flared plastic corrugated pipe of the present utility model is high, especially the structural strength of the flared pipe is improved, and deformation of the flared pipe during use is avoided. It effectively solves the problems of low flaring strength of ordinary pipes and easy deformation during storage and transportation. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a schematic longitudinal sectional structure view of the reinforced flared plastic corrugated pipe of the present utility model;
[0027] Figure 2 is Figure 1 a partial enlarged view of the F area in
[0028] Figure 3 is a schematic structure view of the reinforced flared plastic corrugated pipe of the present utility model during connection and use;
[0029] Figure 4 is a schematic structure view of the forming die of the reinforced flared plastic corrugated pipe of the present utility model;
[0030] Figure 5 is a schematic structure view when a pair of opposite modules of the forming die of the super reinforced flared plastic corrugated pipe of the present utility model are closed;
[0031] Figure 6 is Figure 4 a schematic enlarged structure view of the flaring module group in
[0032] Figure 7 is Figure 4 a schematic enlarged structure view of the insertion section module in
[0033] In the figure: 1. Main body pipe; 11. Wave crest; 111. First wave crest; 12. Wave trough; 13. Insertion section; 2. Flared pipe; 21. First main body flaring transition section; 22. Short reinforcement section; 23. First reinforcement section; 24. Sealing section; 25. Second reinforcement section; 26. Second main body flaring transition section; 27. Reinforcement transition section; Q. Portion to be cut; 3. Sealing ring; A. Main body module group; a. Insertion section module; B. Flaring module group; 41. Annular convex ring; 42. Annular concave ring; 43. First annular concave ring; 51. First transition section cavity; 511. Arc-shaped concave ring; 52. Short reinforcement section cavity; 521. Rectangular concave ring; 53. First reinforcement section cavity; 531. First trapezoidal concave ring; 54. Sealing section cavity; 541. Second trapezoidal concave ring; 55. Second reinforcement section cavity; 56. Second transition section cavity; 57. Reinforcement transition section cavity; 6. Vacuum extraction channel; 7. Connecting groove; 8. Suction groove; 10. First annular reinforcement rib; 20. Second annular reinforcement rib; 30. Third annular reinforcement rib; 301. Third annular reinforcement rib A; 302. Third annular reinforcement rib B; 40. Fourth annular reinforcement rib. Specific embodiments
[0034] The technical solution of the present utility model will be described in detail below in conjunction with the drawings and specific embodiments to further understand the purpose, solution and efficacy of the present utility model, but it is not intended to limit the scope of protection of the appended claims of the present utility model.
[0035] As Figure 1 . Figure 2 , and Figure 3 collectively shown, a reinforced flared plastic corrugated pipe includes an integrally provided main body pipe 1 and a flared pipe 2. The main body pipe 1 includes an inner wall and an outer wall, and wave crests 11 and wave troughs 12 are alternately arranged on the outer wall.
[0036] The flared pipe 2 includes a first main body flaring transition section 21, a short reinforcement section 22, a long reinforcement section, and a second main body flaring transition section 26 that are connected in sequence.
[0037] During use, the portion to be cut Q is cut off. The portion to be cut Q sequentially includes a part of the main body pipe 1 and the first main body flaring transition section 21.
[0038] After cutting off the portion to be cut Q, the flared pipe 2 forms a socket, and a part of the main body pipe 1 forms a spigot, and the spigot is inserted into the socket.
[0039] The part of the main pipe 1 that forms the socket is defined as the insertion section 13. The first peak of the insertion section 13 facing the socket is defined as the first peak 111. The included angle between the side wall of the first peak 111 facing the socket and the horizontal direction is α, and α is 35° - 40°. The first peak 111 is arranged obliquely, which can achieve seamless insertion of the socket and spigot of the pipe, and can be inserted to the bottom, so as to solve the problem that there are gaps between the bottom of the first peak 111 of the socket and the inner wall of the flared opening, and debris accumulates to block the pipeline.
[0040] Preferably, a sealing ring 3 is provided between the trough of the socket and the socket. The setting of the sealing ring 3 eliminates the phenomena of leakage and seepage.
[0041] One end of the first main pipe flared transition section 21 is connected to the main pipe 1 (the upper main pipe in the drawing), and the other end is connected to the short strengthening section 22. The long strengthening section is connected to the short strengthening section 22 through the strengthening transition section 27. The other end of the long strengthening section is connected to the second main pipe flared transition section 26, and the other end of the second main pipe flared transition section 26 is connected to the main pipe 1 (the lower main pipe in the drawing).
[0042] The inner diameter of the first main pipe flared transition section 21 gradually increases from the trough of the main pipe 1 to the short strengthening section 22.
[0043] The inner diameter of the second main pipe flared transition section 26 gradually increases from the trough of the main pipe 1 to the long strengthening section.
[0044] The inner diameter of the strengthening transition section 27 gradually decreases from the short strengthening section 22 to the long strengthening section.
[0045] The connection between the above-mentioned pipe sections gradually transitions in pipe diameter size, avoiding stress concentration, thereby avoiding pipeline cracking and improving the overall strength of the pipe.
[0046] The outer wall of the first main pipe flared transition section 21, the strengthening transition section 27 and the second main pipe flared transition section 26 is provided with a first annular reinforcing rib 10. Preferably, the cross-section of the first annular reinforcing rib 10 is circular arc-shaped. Different from the ordinary double-wall corrugated pipe flared opening, the width and thickness of the first annular reinforcing rib 10 are increased, making its strength higher.
[0047] The outer wall of the short strengthening section 22 is provided with a second annular reinforcing rib 20. Preferably, the cross-section of the second annular reinforcing rib 20 on the outer wall of the short strengthening section 22 is a rectangular cross-section. The setting of the second annular reinforcing rib 20 can not only enhance the strength of the flared opening, prevent the flared opening from deforming, but also avoid the deformation and cracking of the flared opening during insertion.
[0048] Preferably, there are a plurality of third annular reinforcing ribs 30 and a plurality of fourth annular reinforcing ribs 40 on the outer wall of the long reinforcing section. The cross-sections of the third annular reinforcing ribs 30 and the fourth annular reinforcing ribs 40 are trapezoidal. Among them, two of the third annular reinforcing ribs 30 are respectively defined as the third annular reinforcing rib A 301 and the third annular reinforcing rib B 302, and several fourth annular reinforcing ribs 40 are arranged between the third annular reinforcing rib A 301 and the third annular reinforcing rib B 302.
[0049] Further preferably, the cross-sectional width of the third annular reinforcing rib 30 is greater than the cross-sectional width of the fourth annular reinforcing rib 40.
[0050] Reinforcing ribs are respectively arranged on the first main body flare transition section 21, the short reinforcing section 22, the reinforcing transition section 27, the long reinforcing section and the second main body flare transition section 26 of the flared pipe 2, which improves the structural strength of the flared pipe 2 and avoids deformation of the flared pipe 2 during plug-in use.
[0051] Preferably, a draft angle for facilitating demolding is provided on the inner wall of the long reinforcing section.
[0052] Further preferably, the long reinforcing section sequentially includes a first reinforcing section 23, a sealing section 24, and a second reinforcing section 25. The first reinforcing section 23 is connected to the reinforcing transition section 27, and the second reinforcing section 25 is connected to the second main body flare transition section 26. The long reinforcing section between the third annular reinforcing rib A 301 and the third annular reinforcing rib B 302 is defined as the sealing section 24.
[0053] The reinforced flared plastic corrugated pipe of the present utility model has high flaring strength, and the flare is not easily deformed after plug-in connection, so that the sealing during plug-in is not tight, resulting in water leakage at the pipe joint.
[0054] Such as Figure 4 、 Figure 5 、 Figure 6 、and Figure 7 As shown together, the present utility model also discloses a forming mold for a reinforced flared plastic corrugated pipe for producing a reinforced flared plastic corrugated pipe.
[0055] The forming mold includes: a plurality of main body module groups A for forming the main body pipe 1 and a plurality of flaring module groups B for forming the flared pipe 2.
[0056] The cavity of the main body module group A includes alternately arranged annular convex rings 41 and annular concave rings 42. The annular convex rings 41 form the wave troughs of the main body pipe 1, and the annular concave rings 42 form the wave peaks of the main body pipe 1. The annular concave ring 42 for forming the first wave peak 111 is defined as the first annular concave ring 43. The main body module group A includes an insertion section module a for forming the insertion section 13, and the first annular concave ring 43 is located on the insertion section module a.
[0057] The cavity of the flaring module group B includes: a first transition section cavity 51 for forming the first main body flaring transition section 21, a short strengthening section cavity 52 for forming the short strengthening section 22, a strengthening transition section cavity 57 for forming the strengthening transition section 27, a long strengthening section cavity for forming the long strengthening section, and a second transition section cavity 56 for forming the second main body flaring transition section 26.
[0058] Preferably, the first transition section cavity 51 and the second transition section cavity 56 are arranged as a first tapered tube cavity, and a plurality of arc-shaped concave rings 511 for forming the first annular reinforcing ribs 10 are arranged in the first tapered tube cavity. The strengthening transition section cavity 57 is arranged as a second tapered tube cavity, and an arc-shaped concave ring 511 for forming the first annular reinforcing ribs 10 is arranged in the second tapered tube cavity.
[0059] A rectangular concave ring 521 for forming the second annular reinforcing ribs 20 is arranged on the inner wall of the short strengthening section cavity 52.
[0060] A trapezoidal concave ring one 531 for forming the third annular reinforcing ribs 30 and a trapezoidal concave ring two 541 for forming the fourth annular reinforcing ribs 40 are arranged on the inner wall of the long strengthening section cavity.
[0061] Preferably, the long strengthening section cavity includes a first strengthening section cavity, a sealing section cavity, and a second strengthening section cavity that are connected in sequence. The first strengthening section cavity is used for forming the first strengthening section, the sealing section cavity is used for forming the sealing section, and the second strengthening section cavity is used for forming the second strengthening section. The trapezoidal concave ring one 531 for forming the third annular reinforcing ribs 30 is arranged on the inner walls of the first strengthening section cavity and the second strengthening section cavity, and the trapezoidal concave ring two 541 for forming the fourth annular reinforcing ribs 40 is arranged on the inner wall of the sealing section cavity.
[0062] Combined Figure 4 、 Figure 5 、and Figure 6 、and Figure 7 As shown jointly, during molding, the inner cavity formed by the closing of two opposite modules is the mold inner cavity for forming the reinforced flared plastic corrugated pipe. A plurality of air suction grooves 8 and vacuum pumping channels 6 are arranged in each module inner cavity. The plurality of air suction grooves 8 and the vacuum pumping channels 6 are communicated through communication grooves 7. The cavity of the molding module is communicated with the vacuum pumping channels 6, and the vacuum pumping channels 6 are connected to an external vacuum pump (not shown in the figure). When the reinforced flared plastic corrugated pipe is molded, the inner cavity needs to be evacuated so that the outer wall blank of the reinforced flared plastic corrugated pipe is adsorbed on the inner wall of the molding cavity to form a corrugated shape.
[0063] During operation, the molding module runs along a closed annular track and circulates in sequence, so as to continuously produce the reinforced flared plastic corrugated pipe.
[0064] The reinforced flared plastic corrugated pipe formed by the forming die of the utility model greatly improves the strength of the flared pipe. Moreover, it has the advantages of simple structure and convenient installation. Only this die needs to be installed on the ordinary double-wall corrugated pipe production line, and there is no need to replace other parts.
[0065] The technical features named with serial numbers involved in this specification (such as the third annular reinforcing rib A, the third annular reinforcing rib B, the first reinforcing section, the second reinforcing section, etc.) are only used to distinguish each technical feature, and do not represent the positional relationship, installation sequence, working sequence, etc. between each technical feature.
[0066] In the description of this specification, it should be understood that the orientation or positional relationship described by "outer wall", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the utility model.
[0067] The utility model is not limited to the above embodiments. All kinds of improvements made based on the concept, principle, structure and method of the utility model are within the protection scope of the utility model.
Claims
1. A reinforced flared plastic corrugated pipe, comprising a main pipe and a flared pipe integrally provided, the main pipe comprising an inner wall and an outer wall, and the outer wall being provided with alternately arranged wave crests and wave troughs; characterized in that, the flared pipe comprises a first main pipe flaring transition section, a short reinforcing section, a long reinforcing section, and a second main pipe flaring transition section connected in sequence; in use, a part to be cut is cut off, and the part to be cut sequentially comprises a part of the main pipe and the first main pipe flaring transition section; after cutting off the part to be cut, the flared pipe forms a socket, and a part of the main pipe forms a spigot, and the spigot is inserted into the socket; a part of the main pipe forming the spigot is defined as an insertion section, and the first wave crest of the insertion section facing the socket is defined as the first wave crest, and the included angle between the side wall of the first wave crest facing the socket and the horizontal direction is α, and the α is 35° to 40°.
2. The reinforced flared plastic corrugated pipe according to claim 1, wherein A sealing ring is arranged between the wave trough of the spigot and the socket.
3. The reinforced flared plastic corrugated pipe according to claim 1, characterized in that, One end of the first main pipe flaring transition section is connected to the main pipe, the other end is connected to the short reinforcing section, the long reinforcing section is connected to the short reinforcing section through a reinforcing transition section, the other end of the long reinforcing section is connected to the second main pipe flaring transition section, and the other end of the second main pipe flaring transition section is connected to the main pipe; the inner diameter of the first main pipe flaring transition section gradually increases from the wave trough of the main pipe to the short reinforcing section; the inner diameter of the second main pipe flaring transition section gradually increases from the wave trough of the main pipe to the long reinforcing section; the inner diameter of the reinforcing transition section gradually decreases from the short reinforcing section to the long reinforcing section; The outer walls of the first main pipe flaring transition section, the reinforcing transition section, and the second main pipe flaring transition section are provided with first annular reinforcing ribs; The outer wall of the short reinforcing section is provided with second annular reinforcing ribs; The outer wall of the long reinforcing section has a plurality of third annular reinforcing ribs and a plurality of fourth annular reinforcing ribs, and the cross sections of the third annular reinforcing ribs and the fourth annular reinforcing ribs are trapezoidal; two of the third annular reinforcing ribs are respectively defined as the third annular reinforcing rib A and the third annular reinforcing rib B, and a plurality of the fourth annular reinforcing ribs are arranged between the third annular reinforcing rib A and the third annular reinforcing rib B.
4. The reinforced flared plastic corrugated pipe according to claim 3, characterized in that, The cross-sectional width of the third annular reinforcing rib is greater than the cross-sectional width of the fourth annular reinforcing rib.
5. The reinforced flared plastic corrugated pipe according to claim 3, characterized in that, The cross section of the first annular reinforcing rib is arc-shaped.
6. The reinforced flared plastic corrugated pipe according to claim 3, characterized in that, The cross section of the second annular reinforcing rib on the outer wall of the short reinforcing section is a rectangular cross section.
7. The reinforced flared plastic corrugated pipe according to claim 3, characterized in that, The inner wall of the long reinforcing section is provided with a draft angle for facilitating demolding.
8. The reinforced flared plastic corrugated pipe according to claim 3, characterized in that, The long reinforcing section sequentially comprises a first reinforcing section, a sealing section, and a second reinforcing section, the first reinforcing section is connected to the reinforcing transition section, and the second reinforcing section is connected to the second main pipe flaring transition section; the long reinforcing section between the third annular reinforcing rib A and the third annular reinforcing rib B is defined as the sealing section.
9. A forming die for a reinforced flared plastic corrugated pipe, characterized in that, For producing the reinforced flared plastic corrugated pipe as described in claims 1 to 8, the molding die comprises: a plurality of main module groups for molding the main pipe and a plurality of flaring module groups for molding the flared pipe; The cavity of the main body module group includes alternately arranged annular convex rings and annular concave rings. The annular convex rings form the troughs of the main body pipe, and the annular concave rings form the peaks of the main body pipe; the annular concave ring that forms the first peak is defined as the first annular concave ring; The cavity of the flaring module group includes: a first transition section cavity that forms the first main body flaring transition section, a short strengthening section cavity that forms the short strengthening section, a strengthening transition section cavity that forms the strengthening transition section, a long strengthening section cavity that forms the long strengthening section, and a second transition section cavity that forms the second main body flaring transition section.
10. The forming die for the reinforced flared plastic corrugated pipe according to claim 9, wherein, The first transition section cavity and the second transition section cavity are arranged as a first conical pipe cavity. A plurality of arc-shaped inner concave rings for forming the first annular reinforcing ribs are provided in the first conical pipe cavity. The strengthening transition section cavity is arranged as a second conical pipe cavity, and the arc-shaped inner concave ring for forming the first annular reinforcing rib is provided in the second conical pipe cavity; Rectangular inner concave rings for forming the second annular reinforcing ribs are provided on the inner wall of the short strengthening section cavity; Trapezoidal inner concave ring one for forming the third annular reinforcing rib and trapezoidal inner concave ring two for forming the fourth annular reinforcing rib are provided on the inner wall of the long strengthening section cavity.