CN113878907A - Method for manufacturing HDPE double-layer trapezoidal rib winding pipe - Google Patents

Method for manufacturing HDPE double-layer trapezoidal rib winding pipe Download PDF

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Publication number
CN113878907A
CN113878907A CN202111098141.8A CN202111098141A CN113878907A CN 113878907 A CN113878907 A CN 113878907A CN 202111098141 A CN202111098141 A CN 202111098141A CN 113878907 A CN113878907 A CN 113878907A
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hdpe
hole
pipe
double
rib
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洪武荣
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Fujian Xiangyunkechuang New Pipe Industry Technology Co ltd
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Fujian Xiangyunkechuang New Pipe Industry Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The invention provides a method for manufacturing a HDPE double-layer trapezoidal rib winding pipe, which comprises the following steps: HDPE double-layer single-hole trapezoidal rib winding pipes; 1) continuously producing a single-hole PP corrugated pipe with an isosceles trapezoid cross section; 2) the single-hole PP corrugated pipe passes through a coating die, and HDPE melt is extruded by the coating die to coat the single-hole PP corrugated pipe to form a HDPE single-hole trapezoidal rib strip; 3) the HDPE single-hole trapezoidal rib strip is drawn to a hot drum mould to be synchronously wound with the HDPE bottom strip: heating and pressing the edges of the lower parts of the bottom belt and the single-hole trapezoidal rib belt material to integrally form an HDPE trapezoidal rib winding pipe body and bell sockets at two ends of the HDPE trapezoidal rib winding pipe body; 4) superposing and winding the HDPE single-hole trapezoidal rib winding pipe body; synchronously winding the second layer of HDPE single-hole trapezoidal rib strip and the HDPE bottom strip to ensure that the cross sections of the upper and lower layers of rib pipes are arranged in a shape like a Chinese character 'pin'; scheme II: HDPE double-layer double-hole trapezoidal rib winding pipe. The high-ring rigidity requirement of the DN 1600-DN 3000 large-diameter plastic drain pipe can be realized.

Description

Method for manufacturing HDPE double-layer trapezoidal rib winding pipe
Technical Field
The invention relates to a method for manufacturing an HDPE double-layer trapezoidal rib winding pipe.
Background
The existing plastic drainage pipe is limited in manufacturing process and cost, so that the existing plastic drainage pipe is rarely applied to large-diameter plastic drainage pipes (DN 2000-4000), and cement pipes and ductile cast iron pipes are mainly used in the prior art; the traditional product is not an environment-friendly product, and can cause pollution; the pipeline is easy to block due to the defects of the product, and the construction is difficult due to the heavy weight of the pipeline; because the requirement for treating the pipe base is high, the large-caliber cement pipe or the nodular cast iron pipe needs to be connected with a pipe pier in the construction process, and the construction cost is increased.
Disclosure of Invention
The invention aims to provide a method for manufacturing a HDPE double-layer trapezoidal rib winding pipe, which can meet the requirement of high ring rigidity of DN 1600-DN 3000 large-caliber plastic drainage pipes.
The invention is realized by the following scheme: the manufacturing method of the HDPE double-layer trapezoidal rib winding pipe comprises the following production steps:
1) continuously producing a PP corrugated pipe with an isosceles trapezoid cross section on corrugated pipe production equipment, and rolling and packaging for later use;
2) enabling the PP corrugated pipe with the isosceles trapezoid cross section to pass through a coating die, extruding an HDPE melt coating layer to coat the PP corrugated pipe by the coating die, and forming an HDPE single-hole isosceles trapezoid rib strip;
3) HDPE haplopore isosceles trapezoid rib strip is drawn to a set of hot cask mould on, twines with the HDPE base band is synchronous on the cask mould: heating and pressing the bottom belt and the edges of the lower parts of the single-hole isosceles trapezoid rib belt materials to integrally form an HDPE trapezoid rib winding pipe body and socket blank bodies at two ends of the HDPE trapezoid rib winding pipe body;
4) on the trapezoidal rib winding body of HDPE haplopore that forms, add the winding again: under the action of heating equipment, after the surface of the pipe body reaches a welding state, synchronously winding a second layer of HDPE single-hole isosceles trapezoid rib strip and an HDPE bottom strip to enable the cross sections of the upper layer of rib pipe and the lower layer of rib pipe to be arranged in a shape like a Chinese character 'pin', and forming an HDPE double-layer single-hole trapezoid rib winding pipe;
5) and cutting the socket blank bodies at the two ends of the HDPE double-layer single-hole trapezoidal rib winding pipe to form a qualified bell mouth and a qualified faucet.
The second scheme is as follows: the manufacturing method of the double-layer trapezoidal rib winding pipe comprises the following production steps:
1) continuously producing single-hole PP corrugated pipes with trapezoidal cross sections on corrugated pipe production equipment, and rolling and packaging for later use;
2) two single-hole trapezoidal PP corrugated pipes which are arranged in a mirror image manner, wherein two adjacent vertical edges of the PP corrugated pipes are bonded by glue to form a double-hole PP corrugated pipe, the double-hole PP corrugated pipe passes through a coating die, and the temperature of the coating die is 220-230 ℃; extruding HDPE melt by a coating die to coat the double-hole PP corrugated pipe to form an HDPE double-hole trapezoidal rib strip;
3) drawing the HDPE double-hole trapezoidal rib strip onto a group of hot barrel molds, wherein the temperature of the barrel molds is about 200 ℃; winding synchronously with the HDPE bottom belt on a barrel mould: heating and pressing the bottom belt and the edges of the lower parts of the double-hole trapezoidal rib belt materials to integrally form an HDPE trapezoidal rib winding pipe body and socket blank bodies at two ends of the HDPE trapezoidal rib winding pipe body;
4) on the trapezoidal rib winding body of HDPE that forms, add the winding again: under the action of heating equipment, after the surface of the pipe body reaches a welding state, synchronously winding a second layer of HDPE double-hole trapezoidal rib strip and an HDPE bottom strip to ensure that the cross sections of the upper layer of rib pipe and the lower layer of rib pipe are arranged in a shape like a Chinese character 'pin', so as to form an HDPE double-layer double-hole trapezoidal rib winding pipe;
5) and forming qualified bell sockets by using the bell socket blanks at two ends of the HDPE double-layer double-hole trapezoidal rib winding pipe through cutting equipment.
The HDPE double-layer trapezoidal rib winding pipe has the advantages that the HDPE double-layer trapezoidal rib winding pipe is formed by superposing the melt-extruded trapezoidal rib strip and the bottom belt in a double-layer mode and integrally forming the HDPE double-layer trapezoidal rib winding pipe with the bell and spigot, the cross sections of the HDPE double-layer trapezoidal rib winding pipe are arranged in a shape like a Chinese character 'pin', and the inertia moment of the cross sections is maximized; the characteristic of high elastic modulus of the PP material can be fully utilized, and the two factors act together to greatly improve the ring stiffness of the pipe; the method is used for producing the large-caliber plastic drain pipe with the size of 1600-3000 mm.
Drawings
FIG. 1 is a perspective view of a HDPE double-layer single-hole trapezoidal rib wound pipe according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of fig. 1.
FIG. 3 is a perspective view of a two HDPE double layer double hole trapezoidal rib wound pipe of an embodiment of the present invention.
Fig. 4 is a cross-sectional view of fig. 3.
FIG. 5 is a schematic cross-sectional view of a single-hole trapezoidal rib strip and a HDPE base strip of the present invention.
FIG. 6 is a schematic cross-sectional view of a dual-hole trapezoidal rib strip and a HDPE base strip of the present invention.
In fig. 5 and 6: HDPE melt coating; 2. the cross section of the PP corrugated pipe is isosceles trapezoid; HDPE base tape. In fig. 2: 4. a socket; 5. a socket; the Chinese character pin is arranged in a shape like a Chinese character pin; 7. the cross section of the PP corrugated pipe is a left right trapezoid; 8. the cross section is right trapezoid PP corrugated pipe.
Detailed Description
As shown in fig. 1, 2, and 5, one of the embodiments of the present invention: HDPE double-layer single-hole trapezoidal rib winding pipes.
The manufacturing method of the HDPE double-layer single-hole trapezoidal rib winding pipe comprises the following production steps:
1) continuously producing a PP corrugated pipe with an isosceles trapezoid cross section on corrugated pipe production equipment, and rolling and packaging for later use;
2) the PP corrugated pipe 2 with the isosceles trapezoid cross section passes through a coating die, and the temperature of the coating die is 220-230 ℃; extruding an HDPE melt coating layer 1 to coat a PP corrugated pipe by using a coating die to form an HDPE single-hole isosceles trapezoid rib strip;
3) HDPE haplopore isosceles trapezoid rib strip is drawn to the cask mould of a set of hot attitude on, cask mould temperature about 200 degrees, twines with the HDPE base band is synchronous on the cask mould: heating and pressing the bottom belt and the edges of the lower parts of the single-hole isosceles trapezoid rib belt materials to integrally form an HDPE trapezoid rib winding pipe body and socket blank bodies at two ends of the HDPE trapezoid rib winding pipe body;
4) on the trapezoidal rib winding body of HDPE haplopore that forms, add the winding again: under the action of heating equipment, after the surface of the pipe body reaches a welding state, synchronously winding a second layer of HDPE single-hole isosceles trapezoid rib strip and an HDPE bottom strip 3, and arranging the cross sections of an upper layer of rib pipe and a lower layer of rib pipe in a shape like a Chinese character 'pin' 6 to form an HDPE double-layer single-hole trapezoid rib winding pipe;
5) and cutting the socket blank bodies at the two ends of the HDPE double-layer single-hole trapezoidal rib winding pipe to form a qualified bell mouth 4 and a socket 5.
As shown in fig. 3, 4 and 6, the second embodiment of the present invention: the HDPE double-layer double-hole trapezoidal rib winding pipe manufacturing method comprises the following production steps:
1) continuously producing PP corrugated pipes with right trapezoid cross sections on corrugated pipe production equipment, wherein the PP corrugated pipes comprise a left right trapezoid PP corrugated pipe 7 with a left right trapezoid cross section and a right trapezoid PP corrugated pipe 8 with a right trapezoid cross section, and rolling and packaging the PP corrugated pipes for later use;
2) two adjacent vertical edges of the two right-angle trapezoidal PP corrugated pipes which are arranged in a mirror image manner are bonded by glue to form a double-hole PP corrugated pipe, the double-hole PP corrugated pipe passes through a coating die, and the temperature of the coating die is 220-230 ℃; extruding HDPE melt by a coating die to coat the double-hole PP corrugated pipe to form an HDPE double-hole trapezoidal rib strip;
3) HDPE diplopore trapezoidal rib strip is drawn to the cask mould of a set of hot attitude on, and cask mould temperature is about 200 degrees, twines with the HDPE bottom tape is synchronous on the cask mould: heating and pressing the bottom belt and the edges of the lower parts of the double-hole trapezoidal rib belt materials to integrally form an HDPE trapezoidal rib winding pipe body and socket blank bodies at two ends of the HDPE trapezoidal rib winding pipe body;
4) on the trapezoidal rib winding body of HDPE that forms, add the winding again: under the action of heating equipment, after the surface of the pipe body reaches a welding state, synchronously winding a second layer of HDPE double-hole trapezoidal rib strip and an HDPE bottom strip to ensure that the cross sections of the upper layer of rib pipe and the lower layer of rib pipe are arranged in a shape like a Chinese character 'pin', so as to form an HDPE double-layer double-hole trapezoidal rib winding pipe;
5) and cutting the socket blank bodies at the two ends of the HDPE double-layer double-hole trapezoidal rib winding pipe to form qualified sockets.
The table shows the detection report of HDPE double-layer single-hole trapezoidal rib winding pipe with the diameter of 2000mm for inspection:
table one: HDPE double-layer single-hole trapezoidal rib winding pipe detection report (2000mm)
Figure BDA0003269776920000031
Figure BDA0003269776920000041
Table ii is a report of HDPE double-layer double-hole trapezoidal rib winding pipe with diameter of 1600mm for inspection:
table two: HDPE double-layer double-hole trapezoidal rib winding pipe detection report (1600mm)
Figure BDA0003269776920000051
Figure BDA0003269776920000061
And the third table is a detection report of HDPE double-layer double-hole trapezoidal rib winding pipes with the diameter of 3000mm for inspection:
table three: HDPE double-layer double-hole trapezoidal rib winding pipe detection report (3000mm)
Figure BDA0003269776920000062
Figure BDA0003269776920000071
Through multiple tests, the PP corrugated pipe with the rectangular cross section, the PP corrugated pipe with the circular cross section or the PP corrugated pipe with the triangular cross section has lower pressure resistance than the PP corrugated pipe with the trapezoidal cross section, so that the PP corrugated pipe with the trapezoidal cross section with the strongest pressure resistance is selected to produce the trapezoidal ribs. The HDPE double-layer single-hole trapezoidal rib winding pipe or the HDPE double-layer double-hole trapezoidal rib winding pipe is made of the trapezoidal PP corrugated pipe, the diameter of the winding pipe can be made to be 1600mm, 2000mm and 3000mm, and the requirement for high ring rigidity of the large-diameter plastic drain pipe can be met.
Tests also show that the double-layer single-hole circular rib winding pipe manufactured by the PP corrugated pipe with the circular cross section has the advantages that after the 'article' shape is superposed, the circular rib on the upper layer can sink into the two circular ribs on the bottom layer for a distance, so that the height of the circular rib after the 'article' shape is superposed can be smaller than the sum of the diameters of the two circular ribs; after the product-shaped double layers of the trapezoidal ribs are overlapped, the trapezoidal ribs on the upper layer are just overlapped on the two trapezoidal ribs on the bottom layer, the thickness of the pipe wall is just equal to the height of the two trapezoidal ribs plus the thickness of the two bottom belts, namely the thickness of the pipe wall made of the same number of raw materials is larger than that of the pipe wall made of the product-shaped double layers of the circular ribs. The conclusion is that the HDPE double-layer single-hole trapezoidal rib winding pipe or the HDPE double-layer double-hole trapezoidal rib winding pipe is made of the trapezoidal PP corrugated pipe, and the ring stiffness is optimal.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (2)

1. A method for manufacturing a HDPE double-layer trapezoidal rib winding pipe is characterized by comprising the following production steps:
1) continuously producing a PP corrugated pipe with an isosceles trapezoid cross section on corrugated pipe production equipment, and rolling and packaging for later use;
2) a PP corrugated pipe (2) with an isosceles trapezoid cross section passes through a coating die, and an HDPE melt coating layer (1) is extruded by the coating die to coat the PP corrugated pipe to form an HDPE single-hole isosceles trapezoid rib strip;
3) HDPE haplopore isosceles trapezoid rib strip is drawn to a set of hot cask mould on, twines with the HDPE base band is synchronous on the cask mould: heating and pressing the bottom belt and the edges of the lower parts of the single-hole isosceles trapezoid rib belt materials to integrally form an HDPE trapezoid rib winding pipe body and socket blank bodies at two ends of the HDPE trapezoid rib winding pipe body;
4) on the trapezoidal rib winding body of HDPE haplopore that forms, add the winding again: under the action of heating equipment, after the surface of the pipe body reaches a welding state, synchronously winding a second layer of HDPE single-hole isosceles trapezoid rib strip and an HDPE bottom strip (3), and arranging the cross sections of an upper layer of rib pipe and a lower layer of rib pipe in a shape like a Chinese character 'pin' (6) to form an HDPE double-layer single-hole trapezoid rib winding pipe;
5) and cutting the socket blank bodies at the two ends of the HDPE double-layer single-hole trapezoidal rib winding pipe to form a qualified bell mouth (4) and a socket (5).
2. A method for manufacturing a HDPE double-layer trapezoidal rib winding pipe is characterized by comprising the following production steps:
1) continuously producing PP corrugated pipes with right trapezoid cross sections on corrugated pipe production equipment, wherein the PP corrugated pipes comprise a left right trapezoid PP corrugated pipe (7) with a left right trapezoid cross section and a right trapezoid PP corrugated pipe (8) with a right trapezoid cross section, and rolling and packaging the PP corrugated pipes for later use;
2) two adjacent vertical edges of the two right-angle trapezoidal PP corrugated pipes which are arranged in a mirror image manner are bonded by glue to form a double-hole PP corrugated pipe, the double-hole PP corrugated pipe passes through a coating die, and an HDPE melt is extruded by the coating die to coat the double-hole PP corrugated pipe to form an HDPE double-hole trapezoidal rib strip;
3) the HDPE diplopore trapezoidal rib strip is drawn to a group of hot drum moulds, twines with the HDPE bottom band is synchronous on the drum mould: heating and pressing the bottom belt and the edges of the lower parts of the double-hole trapezoidal rib belt materials to integrally form an HDPE trapezoidal rib winding pipe body and socket blank bodies at two ends of the HDPE trapezoidal rib winding pipe body;
4) on the trapezoidal rib winding body of HDPE that forms, add the winding again: under the action of heating equipment, after the surface of the pipe body reaches a welding state, synchronously winding a second layer of HDPE double-hole trapezoidal rib strip and an HDPE bottom strip to ensure that the cross sections of the upper layer of rib pipe and the lower layer of rib pipe are arranged in a shape like a Chinese character 'pin', so as to form an HDPE double-layer double-hole trapezoidal rib winding pipe;
5) and cutting the socket blank bodies at the two ends of the HDPE double-layer double-hole trapezoidal rib winding pipe to form qualified sockets.
CN202111098141.8A 2021-09-18 2021-09-18 Method for manufacturing HDPE double-layer trapezoidal rib winding pipe Pending CN113878907A (en)

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Application Number Priority Date Filing Date Title
CN202111098141.8A CN113878907A (en) 2021-09-18 2021-09-18 Method for manufacturing HDPE double-layer trapezoidal rib winding pipe

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Application Number Priority Date Filing Date Title
CN202111098141.8A CN113878907A (en) 2021-09-18 2021-09-18 Method for manufacturing HDPE double-layer trapezoidal rib winding pipe

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CN113878907A true CN113878907A (en) 2022-01-04

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Application Number Title Priority Date Filing Date
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