CN112721090B - Production process of flange connection double-wall corrugated pipe - Google Patents
Production process of flange connection double-wall corrugated pipe Download PDFInfo
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- CN112721090B CN112721090B CN202011418139.XA CN202011418139A CN112721090B CN 112721090 B CN112721090 B CN 112721090B CN 202011418139 A CN202011418139 A CN 202011418139A CN 112721090 B CN112721090 B CN 112721090B
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- Prior art keywords
- flange
- solid
- wave crest
- corrugated pipe
- wall corrugated
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
Abstract
The invention provides a production process of a flange connection double-wall corrugated pipe, which comprises the following steps of: (1) adding raw materials to an extruder; (2) When the flange solid wave crest module is extruded and molded, the speed of the molding machine and the extruder is changed, and the flange solid wave crest module is fully extruded with raw materials to form a flange solid wave crest; (3) cooling, sizing and cutting to a fixed length; (4) trimming the cut edge trimmer; (5) After the trimming, connecting screw holes are drilled on the solid peaks of the flange. According to the flange connection double-wall corrugated pipe, a flaring module is not required to be adopted in production, and continuous and automatic production of the pipe body can be realized only by controlling the speeds of the extruder and the forming machine to form a flange entity wave crest.
Description
Technical Field
The invention belongs to the technical field of production of double-wall corrugated pipes, and particularly relates to a production process of a flange connection double-wall corrugated pipe.
Background
The double-wall corrugated pipe is a novel pipe with an annular structure outer wall and a smooth inner wall, and has been developed from a single variety to a complete product series through more than ten years of development and perfection, and the production process and the use technology are very mature.
The pipe bodies of the traditional double-wall corrugated pipes are connected by adopting bell and spigot joints, namely the pipe production needs a flaring module. And the bell and spigot connection generally adopts connection modes such as rubber ring connection, electric melting socket connection, thermal shrinkage sleeve connection, electric melting belt connection and the like, however, the connection modes have poor sealing performance and high construction environment requirements, and when water is conveyed, water is easy to ooze out from the connection part of the double-wall corrugated pipe, so that the use is not facilitated.
Accordingly, there is a need to provide a new double-wall bellows production process to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a production process of a flange connection double-wall corrugated pipe, which comprises the following steps:
(1) Adding raw materials into an extruder;
(2) When the flange solid wave crest module is extruded and molded, the speed of the molding machine and the extruder is changed, and the flange solid wave crest module is fully extruded with raw materials to form a flange solid wave crest;
(3) Cooling, sizing and cutting to a fixed length;
(4) Trimming the cut edge trimmer;
(5) After the trimming, connecting screw holes are drilled on the solid peaks of the flange.
Preferably, the method further comprises the following steps: cutting and trimming the flange entity wave crests at the two ends of the pipe body to enable the cross sections of the flange entity wave crests at the two ends of the pipe body to be square.
Preferably, the method further comprises the following steps: and producing the flange connecting pipe by adopting an injection molding machine, wherein a flange connecting ring is arranged on the surface of the flange connecting pipe, and a connecting screw hole is arranged in the flange connecting ring.
Preferably, the method further comprises the following steps: processing solid short peaks or solid notch peaks:
(1) Processing solid short wave crest: the wave crest of the flange connection double-wall corrugated pipe, which is close to the solid wave crest of the flanges at the two ends, is also in a solid wall structure, and the wave crest is trimmed by a cutting machine so that the height of the wave crest is lower than that of the flange connection screw hole;
(2) Processing the solid notch crest: the peak of the flange connection double-wall corrugated pipe, which is close to the solid peaks of the flanges at the two ends, is also of a solid wall structure, and the peak is trimmed by a cutting machine, so that a notch is formed in the peak.
The beneficial effects of the invention are as follows:
1. according to the flange connection double-wall corrugated pipe, a flaring module is not required to be adopted in production, and continuous and automatic production of the pipe body can be realized only by controlling the speeds of the extruder and the forming machine to form a flange entity wave crest.
2. The flange connection double-wall corrugated pipe produced by the invention has the advantages of simple structure, convenient connection, high pipeline connection strength and good sealing performance.
Drawings
FIG. 1 is a schematic view of a flange-connected double-wall bellows;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic diagram of the structure of a solid short peak;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
FIG. 5 is a schematic view of a structure in which connection is made without using a flange connection pipe;
in the figure: 1. a first double-wall bellows body; 2. a peak; 3. a trough; 4. a nut; 5. a metal gasket; 6. a physical crest A; 7. a connecting hole A; 8. a flange connecting ring A; 9. a threaded rod A; 10. A flange connecting ring B; 11. a connecting hole B; 12. a physical peak B; 13. a threaded rod B; 14. a solid notch peak; 15. a flange connecting pipe; 16. a seal ring; 17. a second double-walled bellows body; 18. circular arc-shaped notch; 19. a solid short peak A; 20. and a solid short peak B.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
As shown in fig. 1-2, a flange connection double-wall corrugated pipe comprises a first double-wall corrugated pipe body and a second double-wall corrugated pipe body, and further comprises a flange connection pipe, wherein the surfaces of the first double-wall corrugated pipe body and the second double-wall corrugated pipe body are sequentially provided with integrally formed wave crests (the wave crests are hollow wave crests generally) from left to right, wave troughs are arranged among the wave crests, an entity wave crest A is arranged at the position, close to the second double-wall corrugated pipe body, of the first double-wall corrugated pipe body, an entity wave crest B is arranged at the position, close to the first double-wall corrugated pipe body, of the second double-wall corrugated pipe body, a flange connection ring A and a flange connection ring B are arranged on the flange connection pipe, a plurality of pairs of connection holes A are formed in the entity wave crest A and the flange connection ring B along the axial direction, the entity wave crest A and the threaded rod B are equal in number, and the logarithm of the connection holes A are equal in number. The threaded rod A sequentially penetrates through each pair of connecting holes A in the solid wave crest A and the flange connecting ring A, nuts are used for tightening at two ends of the threaded rod A to fixedly connect the first double-wall corrugated pipe body and the flange connecting pipe, the threaded rod B sequentially penetrates through each pair of connecting holes B in the solid wave crest B and the flange connecting ring B, and nuts are used for tightening at two ends of the threaded rod B to fixedly connect the second double-wall corrugated pipe body and the flange connecting pipe. The flange connecting pipe comprises a connecting section A and a connecting section B, wherein the connecting section A is positioned in the first double-wall corrugated pipe body, the connecting section B is positioned in the second double-wall corrugated pipe body, the joint of the first double-wall corrugated pipe body and the flange connecting pipe is provided with a sealing ring, and the joint of the flange connecting pipe and the second double-wall corrugated pipe body is provided with a sealing ring.
In this embodiment, metal gaskets are further disposed at two ends of the threaded rod a and the threaded rod B. And the cross sections of the solid wave crest A, the solid wave crest B, the flange connecting ring A and the flange connecting ring B are square.
The peak of the first double-wall corrugated pipe body, which is close to the solid peak A, and the peak of the second double-wall corrugated pipe body, which is close to the solid peak B, are solid notch peaks, namely arc notches (trapezoid notches and triangular notches are formed in the solid peaks), and the lowest position of the arc notches is lower than the lowest position of the nut. The arc-shaped notch is arranged to facilitate the fixed installation of the threaded rod A and the threaded rod B.
When in installation, the sealing ring is firstly placed at the joint of the first double-wall corrugated pipe body and the flange connecting pipe, and then the solid wave crest A and the connecting hole A in the flange connecting ring A are aligned. The installer then inserts threaded rod a into connecting hole a for threaded connection, and the installer then places the metal gasket outside the connecting hole, and then the installer fixes metal gasket and threaded rod a with the nut to fix first double-walled bellows body and flange connecting pipe. And the flange connecting pipe and the second double-wall corrugated pipe body are fixed in the same method.
Meanwhile, the peak of the first double-wall corrugated pipe body close to the solid peak a may be a solid short peak a, and the peak of the second double-wall corrugated pipe body close to the solid peak B is also a solid short peak B, wherein the height of the solid short peak a is lower than the height of the highest position of the threaded rod a, and the height of the solid short peak B is lower than the height of the highest position of the threaded rod B. See in particular figures 3 and 4.
The production process of the flange connection double-wall corrugated pipe comprises the following steps of:
(1) Adding raw materials into an extruder;
(2) When the flange solid wave crest module is extruded and molded, the speed of the molding machine and the extruder is changed, and the flange solid wave crest module is fully extruded with raw materials to form a flange solid wave crest;
(3) Cooling, sizing and cutting to a fixed length;
(4) Trimming the cut edge trimmer;
(5) After trimming, drilling a connecting screw hole on the peak of the flange entity;
(6) Cutting and trimming the flange entity wave crests at the two ends of the pipe body to enable the cross sections of the flange entity wave crests at the two ends of the pipe body to be square.
(7) And producing the flange connecting pipe by adopting an injection molding machine, wherein a flange connecting ring is arranged on the surface of the flange connecting pipe, and a connecting screw hole is arranged in the flange connecting ring.
(8) Processing solid short peaks or solid notch peaks:
A. processing solid short wave crest: the wave crest of the flange connection double-wall corrugated pipe, which is close to the solid wave crest of the flanges at the two ends, is also in a solid wall structure, and the wave crest is trimmed by a cutting machine so that the height of the wave crest is lower than that of the flange connection screw hole;
B. processing the solid notch crest: the peak of the flange connection double-wall corrugated pipe, which is close to the solid peaks of the flanges at the two ends, is also of a solid wall structure, and is trimmed by a cutting machine, so that a notch (the notch is a circular arc notch or a trapezoid notch or a triangle notch) is formed in the peak.
The flange connection pipe is not used for connection, and the two flange connection double-wall corrugated pipes can be directly connected by using the solid wave crest A and the solid wave crest B at the two ends of the pipe body, and the concrete is shown in fig. 5.
The production process of the flange connection double-wall corrugated pipe comprises the following steps of:
(1) Adding raw materials into an extruder;
(2) When the flange solid wave crest module is extruded and molded, the speed of the molding machine and the extruder is changed, and the flange solid wave crest module is fully extruded with raw materials to form a flange solid wave crest;
(3) Cooling, sizing and cutting to a fixed length;
(4) Trimming the cut edge trimmer;
(5) After the trimming, connecting screw holes are drilled on the solid peaks of the flange.
(6) Processing solid short peaks or solid notch peaks:
A. processing solid short wave crest: the wave crest of the flange connection double-wall corrugated pipe, which is close to the solid wave crest of the flanges at the two ends, is also in a solid wall structure, and the wave crest is trimmed by a cutting machine so that the height of the wave crest is lower than that of the flange connection screw hole;
B. processing the solid notch crest: the peak of the flange connection double-wall corrugated pipe, which is close to the solid peaks of the flanges at the two ends, is also of a solid wall structure, and is trimmed by a cutting machine, so that a notch (the notch is a circular arc notch or a trapezoid notch or a triangle notch) is formed in the peak.
The foregoing description is only exemplary embodiments of the present invention and is not intended to limit the scope of the present invention, and all simple and equivalent substitutions made by the present specification and drawings, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (4)
1. A production process of a flange connection double-wall corrugated pipe is characterized by comprising the following steps of: the method comprises the following steps:
(1) Adding raw materials into an extruder;
(2) When the flange solid wave crest module is extruded and molded, the speed of the molding machine and the extruder is changed, and the flange solid wave crest module is fully extruded with raw materials to form a flange solid wave crest;
(3) Cooling, sizing and cutting to a fixed length;
(4) Trimming the cut edge trimmer;
(5) After the trimming, connecting screw holes are drilled on the solid peaks of the flange.
2. The process for producing a flange-connected double-wall corrugated pipe according to claim 1, wherein: the method also comprises the following steps: cutting and trimming the flange entity wave crests at the two ends of the pipe body to enable the cross sections of the flange entity wave crests at the two ends of the pipe body to be square.
3. The process for producing a flange-connected double-wall corrugated pipe according to claim 1, wherein: the method also comprises the following steps: and producing the flange connecting pipe by adopting an injection molding machine, wherein a flange connecting ring is arranged on the surface of the flange connecting pipe, and a connecting screw hole is arranged in the flange connecting ring.
4. The process for producing a flange-connected double-wall corrugated pipe according to claim 1, wherein: the method also comprises the following steps: processing solid short peaks or solid notch peaks:
(1) Processing solid short wave crest: the wave crest of the flange connection double-wall corrugated pipe, which is close to the solid wave crest of the flanges at the two ends, is also in a solid wall structure, and the wave crest is trimmed by a cutting machine so that the height of the wave crest is lower than that of the flange connection screw hole;
(2) Processing the solid notch crest: the peak of the flange connection double-wall corrugated pipe, which is close to the solid peaks of the flanges at the two ends, is also of a solid wall structure, and the peak is trimmed by a cutting machine, so that a notch is formed in the peak.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418139.XA CN112721090B (en) | 2020-12-07 | 2020-12-07 | Production process of flange connection double-wall corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418139.XA CN112721090B (en) | 2020-12-07 | 2020-12-07 | Production process of flange connection double-wall corrugated pipe |
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| Publication Number | Publication Date |
|---|---|
| CN112721090A CN112721090A (en) | 2021-04-30 |
| CN112721090B true CN112721090B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011418139.XA Active CN112721090B (en) | 2020-12-07 | 2020-12-07 | Production process of flange connection double-wall corrugated pipe |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113459549A (en) * | 2021-06-28 | 2021-10-01 | 康命源(京山)新材料科技发展有限公司 | Production process of semi-ring loop connection double-wall corrugated pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691897A (en) * | 2009-08-18 | 2010-04-07 | 谢志树 | Injection plastic double-wall corrugated pipe and manufacturing method thereof |
| KR20110059314A (en) * | 2009-11-27 | 2011-06-02 | 안정복 | A flange type plastic corrugated pipe |
| CN102278342A (en) * | 2011-06-28 | 2011-12-14 | 北京航空航天大学 | Method for bonding carbon fiber pipe with metal flanges internally and externally |
| CN211118211U (en) * | 2019-11-18 | 2020-07-28 | 安徽万方管业集团有限公司 | Connecting joint of HDPE double-wall corrugated pipe |
-
2020
- 2020-12-07 CN CN202011418139.XA patent/CN112721090B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691897A (en) * | 2009-08-18 | 2010-04-07 | 谢志树 | Injection plastic double-wall corrugated pipe and manufacturing method thereof |
| KR20110059314A (en) * | 2009-11-27 | 2011-06-02 | 안정복 | A flange type plastic corrugated pipe |
| CN102278342A (en) * | 2011-06-28 | 2011-12-14 | 北京航空航天大学 | Method for bonding carbon fiber pipe with metal flanges internally and externally |
| CN211118211U (en) * | 2019-11-18 | 2020-07-28 | 安徽万方管业集团有限公司 | Connecting joint of HDPE double-wall corrugated pipe |
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| CN112721090A (en) | 2021-04-30 |
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