CN110901117A - Preparation method and detection equipment of MPVE corrugated pipe with compression resistance characteristic - Google Patents
Preparation method and detection equipment of MPVE corrugated pipe with compression resistance characteristic Download PDFInfo
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- CN110901117A CN110901117A CN201910948726.0A CN201910948726A CN110901117A CN 110901117 A CN110901117 A CN 110901117A CN 201910948726 A CN201910948726 A CN 201910948726A CN 110901117 A CN110901117 A CN 110901117A
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- 230000006835 compression Effects 0.000 title claims abstract description 45
- 238000007906 compression Methods 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 56
- 238000000465 moulding Methods 0.000 claims abstract description 47
- 238000005520 cutting process Methods 0.000 claims abstract description 19
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 238000004806 packaging method and process Methods 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 12
- 238000005070 sampling Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 66
- 239000000463 material Substances 0.000 claims description 62
- 238000000034 method Methods 0.000 claims description 27
- 239000004743 Polypropylene Substances 0.000 claims description 20
- 235000021355 Stearic acid Nutrition 0.000 claims description 20
- 239000004595 color masterbatch Substances 0.000 claims description 20
- 239000002274 desiccant Substances 0.000 claims description 20
- 239000000945 filler Substances 0.000 claims description 20
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 20
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 20
- -1 polypropylene Polymers 0.000 claims description 20
- 229920001155 polypropylene Polymers 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 20
- 239000008117 stearic acid Substances 0.000 claims description 20
- 238000000429 assembly Methods 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 238000012669 compression test Methods 0.000 claims description 4
- 239000005341 toughened glass Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000001310 location test Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Images
Classifications
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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
- B29D23/18—Pleated or corrugated hoses
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Abstract
The invention discloses a preparation method and detection equipment of an MPVE corrugated pipe with compression resistance, which comprises the following steps: step S1, weighing the components; step S2, mixing raw materials; step S3, vacuum feeding; step S4, extruding; step S5, molding; step S6, cutting and packaging; step S7, random sampling detection; the MPVE corrugated pipe manufactured by the technical scheme has good structural strength and can generate strong supporting force, the outer wall pipe has better structural strength and better compression resistance characteristic by adding acrylonitrile in the outer wall pipe, and the toughness of the outer wall pipe is not changed by not adding acrylonitrile in the inner wall pipe.
Description
Technical Field
The invention relates to the technical field of corrugated pipe production and detection, in particular to a preparation method and detection equipment of an MPVE corrugated pipe with compression resistance.
Background
The corrugated pipe is a tubular elastic sensitive element which is formed by connecting foldable corrugated sheets along the folding and stretching direction. The corrugated pipe has wide application in instruments and meters, and is mainly used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The corrugated pipe has thin pipe wall and high sensitivity, and the measurement range is from tens of Pa to tens of MPa. Its open end is fixed, its sealed end is in free state, and its elasticity is increased by using auxiliary helical spring or reed. The existing corrugated pipe is mostly made of plastic materials, the existing corrugated pipe is poor in forward pressure resistance due to the fact that few strengthening materials are contained in the existing corrugated pipe, if strengthening materials are added into an outer wall pipe, the strength of the existing corrugated pipe is properly increased, the proportion of the materials in the inner wall pipe is kept unchanged, the existing detection means mostly buries the double corrugated pipe in a soil layer, and the deformation degree of the corrugated pipe is observed through repeated rolling of heavy equipment, so that the pressure resistance of the existing corrugated pipe is recorded.
Disclosure of Invention
The invention aims to solve the problems, designs a preparation method and detection equipment of an MPVE corrugated pipe with compression resistance, and solves the problems that the existing corrugated pipe is mostly made of plastic materials, the reinforcing materials in the existing corrugated pipe are less, so the forward compression resistance is weaker, if the material with the reinforcing properties is added into an outer wall pipe, the strength of the existing corrugated pipe is properly increased, the material proportion of the inner wall pipe is kept unchanged, and the existing detection means is mostly to record the compression resistance by embedding a double corrugated pipe in a soil layer, repeatedly rolling by heavy equipment and observing the deformation degree of the corrugated pipe, so that the operation is complex, the equipment cost is high, the outdoor test environment is poorer, and the obtained experimental structure is inconvenient to record.
The technical scheme of the invention for realizing the aim is as follows: the preparation method of the MPVE corrugated pipe with the compression resistance characteristic comprises the following steps: step S1, weighing the components; step S2, mixing raw materials; step S3, vacuum feeding; step S4, extruding; step S5, molding; step S6, cutting and packaging; step S7, random sampling detection;
s1: weighing various raw materials according to the following mixture ratio by taking the mass fraction as a unit:
the inner wall pipe comprises the following raw materials in proportion: 50-55 parts of polypropylene resin, 5-8 parts of reclaimed materials, 25-28 parts of fixed fillers, 4-6 parts of stearic acid, 3-6 parts of drying agents and 3-7 parts of dark green color master batches;
the outer wall pipe comprises the following raw materials in proportion: 50-53 parts of polypropylene resin, 3-7 parts of acrylonitrile, 5-10 parts of reclaimed materials, 22-25 parts of fixed fillers, 4-5 parts of stearic acid, 3-6 parts of drying agents and 3-4 parts of dark green color master batches;
s2: respectively putting the inner wall pipe raw material and the outer wall pipe raw material weighed in the step S1 into a double mixer for mixing, wherein the raw materials are divided into an inner material and an outer material;
s3: forcibly feeding materials into the feeding machines regularly and quantitatively by vacuum feeding, wherein the rotating speed of the feeding machines is set to be 20-30 r/min, the two feeding machines are used for continuous feeding, and the set weight is 200 kg/h;
s4: putting the mixed materials into a double-cone double-screw extruder, wherein the rotating speed control range is as follows: the outer wall pipe is 26-33 r/min, the inner wall pipe is 16-23 r/min, the melt mixed material is extruded through an extrusion die at the temperature of 203-;
s5: controlling and shaping traction on the extruded and molded tube blank on a molding machine in a segmented manner, and simultaneously carrying out a flaring molding process, wherein the flaring starting length is 90-120mm, the flaring ending length is 320-350mm, the molding machine is provided with at least eight segments of molding processes, the molding speed is set within the range of 400-6500mm, the speed is 88-108M/s, and a cooling fan is arranged at the periphery of the molding machine;
s6: cutting the double-wall corrugated pipe by a cutting machine, and packaging in batches;
s7: and randomly drawing the corrugated pipe for pressure resistance detection.
The inner wall pipe in the step S1 comprises the following raw materials in proportion: polypropylene resin 52, a reclaimed material 7, a fixed filler 26, stearic acid 5, a drying agent 5 and blackish green color master batch 5;
the outer wall pipe comprises the following raw materials in proportion: the composite material comprises 51 parts of polypropylene resin, 5 parts of acrylonitrile, 8 parts of reclaimed materials, 23 parts of fixed fillers, 4 parts of stearic acid, 6 parts of drying agents and 3 parts of dark green color master batch.
In the step S4, the rotation speed of the outer wall tube is controlled to be 28-30 r/min, the rotation speed of the inner wall tube is controlled to be 18-20 r/min, and the melting temperature is 208-.
In the step S5, the flaring start length is further controlled to be 95-100mm, and the flaring end length is further controlled to be 330-335 mm.
The MPVE corrugated pipe detection equipment with the compression resistance characteristic comprises a test bed, wherein the test bed is a rectangular cavity box body, the upper wall surface of the test bed is provided with an opening, and a compression resistance test mechanism is arranged on the test bed;
the compression test mechanism comprises: a pressure generating structure and a bottom support assembly;
the pressure generating structure includes: the device comprises a pair of door-shaped frames with the same structure, a connecting plate, a pair of slide rails with the same structure, a pair of slide blocks with the same structure, a mounting plate, a transverse moving assembly, a pair of hydraulic assemblies with the same structure, a pair of connecting blocks with the same structure, a driving shaft and a press roller;
the pair of door-shaped frames are respectively arranged at two sides of the test bed, the connecting plate is arranged between the pair of door-shaped frames, the pair of slide rails are arranged on the lower wall surface of the connecting plate and are parallel to the test bed, the pair of slide plates are assembled on the pair of slide rails, the mounting plate is arranged on the pair of slide plates, the transverse moving component is arranged on the lower wall surface of the connecting plate and is connected with the mounting plate, the pair of hydraulic components are arranged on the lower wall surface of the mounting plate, the telescopic ends of the hydraulic components are vertically downward, the pair of connecting blocks are arranged on the pair of hydraulic components, a pair of bearing holes with the same structure are formed in the connecting blocks, the driving shaft is arranged in the pair of bearing holes;
the hydraulic assembly includes: the hydraulic control system comprises a pair of fixing seats with the same structure, a pair of sleeves with the same structure, a pair of hydraulic cylinders with the same structure, a pair of insertion rods with the same structure and a hydraulic controller;
the pair of fixing seats are mounted on the lower wall surface of the mounting plate, the pair of sleeves are vertically and downwards mounted on the pair of fixing seats, the pair of hydraulic cylinders are embedded in the pair of sleeves, the pair of insertion rods are vertically mounted in the pair of sleeves and are respectively connected with the telescopic ends of the pair of hydraulic cylinders, the pair of connecting blocks are respectively connected with the end parts of the pair of insertion rods, and the hydraulic controller is mounted on the door-shaped frame.
The lateral movement assembly includes: the pair of fixed blocks, the screw rod and the servo motor are identical in structure;
the pair of fixed blocks are arranged on the connecting plate, the screw rod is movably arranged on the pair of fixed blocks, and the servo motor is arranged on one side of one of the fixed blocks and is movably connected with the end part of the screw rod.
The bottom support assembly includes: the supporting seat comprises a pair of supporting seats with the same structure, a pair of fastening bolts with the same structure and a pair of placing grooves with the same structure;
the pair of supporting seats are respectively installed at two ends in the rectangular cavity of the installation test bed, a pair of first threaded holes with the same structure are formed in the supporting seats, two pairs of second threaded holes matched with the supporting seats are formed in two side wall surfaces of the rectangular cavity of the test bed, the pair of fastening bolts penetrate through the pair of second threaded holes and are in threaded connection with the pair of first threaded holes, and the upper ends of the pair of supporting seats are respectively provided with a placing groove.
The front end and the rear end of the test bed are provided with openings, and high-strength toughened glass is embedded on the openings.
And the pair of sliding plates are in I-shaped structures, and a pair of limiting plates with the same structure are arranged at the edges of the lower openings at the two sides of the pair of sliding rails matched with the sliding plates.
The four corners of the bottom of the test bed are provided with a plurality of support legs with the same structure, the bottom of the test bed is provided with a blanking opening, and a blanking cabin door is inserted into the blanking opening.
The MPVE corrugated pipe manufactured by the technical scheme of the invention has good structural strength and can generate extremely strong supporting force, the outer wall pipe has better structural strength and better compression resistance characteristic by adding acrylonitrile into the outer wall pipe, and the toughness of the outer wall pipe is unchanged by not adding acrylonitrile into the inner wall pipe, so that the compression resistance characteristic is improved, the toughness of the corrugated pipe is not influenced, and the cracking condition is avoided by matching the outer wall pipe and the inner wall pipe, meanwhile, the MPVE corrugated pipe detection equipment with the compression resistance characteristic has simple structure and convenient operation, can well simulate the condition of the corrugated pipe during the compression resistance characteristic test, can continuously adjust the pressure generated in the vertical direction by the pressure generation structure on the equipment, simulates the pressure condition of the equipment with different weights on the buried pipe sections, and simultaneously generates transverse movement by the transverse movement assembly, make its simulation vehicle effect that rolls repeatedly, through the hydraulic controller in the hydraulic pressure subassembly, the pressure that the reaction pneumatic cylinder produced, through this kind of mode, so that take notes the pressure of pneumatic cylinder under the different states, the bottom sprag subassembly, fixed and location test pipe, place its roll-over in the experimentation, the compressive property that has realized the bellows through above structural cooperation detects, can accomplish simultaneously indoors, equipment is simple, convenient experiment, the effectual cost of having saved, and the pressure that produces can be adjusted, the compressive property of bellows under the different pressures of observation that can be better.
Drawings
Fig. 1 is a schematic front sectional structural view of an MPVE corrugated pipe manufacturing method and detection equipment for pressure resistance characteristics according to the present invention.
Fig. 2 is a schematic side view, cross-sectional structural view of the MPVE corrugated pipe manufacturing method and the detection device with the compression resistance of the present invention.
Fig. 3 is a schematic top view of the MPVE corrugated pipe manufacturing method and the detection apparatus with the pressure resistance of the present invention.
Fig. 4 is a schematic structural diagram of a front view pressing state of the MPVE corrugated pipe manufacturing method and the detection device with the pressure resistance characteristic according to the present invention.
Fig. 5 is a schematic side view of a pressing state structure of the MPVE bellows manufacturing method and the detection device with the pressing resistance of the present invention.
Fig. 6 is a schematic view of the bottom view structure of the MPVE corrugated pipe manufacturing method and the detection device with the pressure resistance characteristics according to the present invention.
Fig. 7 is a schematic diagram of a pressure generating structure of the MPVE bellows manufacturing method and the detection device with the pressure resistance characteristic according to the present invention.
Fig. 8 is a partially enlarged structural schematic diagram of the MPVE bellows manufacturing method and the detection device with the pressure resistance characteristics shown in fig. 4 according to the present invention.
In the figure: 1. a test bed; 2. a gantry frame; 3. a connecting plate; 4. a slide rail; 5. a slider; 6. a lateral movement assembly; 7. a hydraulic assembly; 8. mounting a plate; 9. a drive shaft; 10. a compression roller; 11. a supporting seat; 12. fastening a bolt; 13. a placement groove; 14. tempering the glass; 15. a limiting plate; 16. a blanking cabin door; 17. connecting blocks; 6a1, fixed block; 6a2, lead screw; 6a3, servo motor; 7a1, a fixed seat; 7a2, cannula; 7a3, hydraulic cylinder; 7a4, plunger; 7a5, hydraulic controller.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, and as shown in fig. 1 to 8, a method for manufacturing an MPVE corrugated pipe having a compression resistance characteristic includes the steps of: step S1, weighing the components; step S2, mixing raw materials; step S3, vacuum feeding; step S4, extruding; step S5, molding; step S6, cutting and packaging; step S7, random sampling detection; s1: weighing various raw materials according to the following mixture ratio by taking the mass fraction as a unit: the inner wall pipe comprises the following raw materials in proportion: 50-55 parts of polypropylene resin, 5-8 parts of reclaimed materials, 25-28 parts of fixed fillers, 4-6 parts of stearic acid, 3-6 parts of drying agents and 3-7 parts of dark green color master batches; the outer wall pipe comprises the following raw materials in proportion: 50-53 parts of polypropylene resin, 3-7 parts of acrylonitrile, 5-10 parts of reclaimed materials, 22-25 parts of fixed fillers, 4-5 parts of stearic acid, 3-6 parts of drying agents and 3-4 parts of dark green color master batches; s2: respectively putting the inner wall pipe raw material and the outer wall pipe raw material weighed in the step S1 into a double mixer for mixing, wherein the raw materials are divided into an inner material and an outer material; s3: forcibly feeding materials into the feeding machines regularly and quantitatively by vacuum feeding, wherein the rotating speed of the feeding machines is set to be 20-30 r/min, the two feeding machines are used for continuous feeding, and the set weight is 200 kg/h; s4: putting the mixed materials into a double-cone double-screw extruder, wherein the rotating speed control range is as follows: the outer wall pipe is 26-33 r/min, the inner wall pipe is 16-23 r/min, the melt mixed material is extruded through an extrusion die at the temperature of 203-; s5: controlling and shaping traction on the extruded and molded tube blank on a molding machine in a segmented manner, and simultaneously carrying out a flaring molding process, wherein the flaring starting length is 90-120mm, the flaring ending length is 320-350mm, the molding machine is provided with at least eight segments of molding processes, the molding speed is set within the range of 400-6500mm, the speed is 88-108M/s, and a cooling fan is arranged at the periphery of the molding machine; s6: cutting the double-wall corrugated pipe by a cutting machine, and packaging in batches; s7: randomly drawing out the corrugated pipe for compression resistance detection; the inner wall pipe in the step S1 comprises the following raw materials in proportion: polypropylene resin 52, a reclaimed material 7, a fixed filler 26, stearic acid 5, a drying agent 5 and blackish green color master batch 5; the outer wall pipe comprises the following raw materials in proportion: polypropylene resin 51, acrylonitrile 5, reclaimed material 8, fixed filler 23, stearic acid 4, drying agent 6 and blackish green color master batch 3; in the step S4, the rotating speed of the outer wall pipe is further controlled to be 28-30 r/min, the rotating speed of the inner wall pipe is controlled to be 18-20 r/min, and the melting temperature is 208-; further controlling the flaring start length to be set to 95-100mm and the flaring end length to be set to be 330-335mm in the step S5; the MPVE corrugated pipe detection equipment with the compression resistance characteristic comprises a test bed 1, wherein the test bed 1 is a rectangular cavity box body, the upper wall surface of the test bed 1 is provided with an opening, and a compression resistance test mechanism is arranged on the test bed 1; the compression test mechanism comprises: a pressure generating structure and a bottom support assembly; the pressure generating structure includes: the device comprises a pair of door-shaped frames 2 with the same structure, a connecting plate 3, a pair of slide rails 4 with the same structure, a pair of sliders 5 with the same structure, a mounting plate 8, a transverse moving assembly 6, a pair of hydraulic assemblies 7 with the same structure, a pair of connecting blocks 17 with the same structure, a driving shaft 9 and a pressing roller 10; the pair of door-shaped frames 2 are respectively arranged at two sides of the test bed 1, the connecting plate 3 is arranged between the pair of door-shaped frames 2, the pair of slide rails 4 are arranged on the lower wall surface of the connecting plate 3 and are parallel to the test bed 1, the pair of slide plates are assembled on the pair of slide rails 4, the mounting plate 8 is arranged on the pair of slide plates, the transverse moving assembly 6 is arranged on the lower wall surface of the connecting plate 3 and is mutually connected with the mounting plate 8, the pair of hydraulic assemblies 7 are arranged on the lower wall surface of the mounting plate 8, the telescopic ends of the hydraulic assemblies are vertically downward, the pair of connecting blocks 17 are arranged on the pair of hydraulic assemblies 7 and are provided with a pair of bearing holes with the same structure, the driving shaft 9 is arranged in the pair of bearing holes, and the compression roller; the hydraulic assembly 7 comprises: a pair of fixing seats 7a1 with the same structure, a pair of sleeves 7a2 with the same structure, a pair of hydraulic cylinders 7a3 with the same structure, a pair of insertion rods 7a4 with the same structure and a hydraulic controller 7a 5; the pair of the fixed seats 7a1 are mounted on the lower wall surface of the mounting plate 8, the pair of sleeves 7a2 are vertically mounted on the pair of the fixed seats 7a1, the pair of the hydraulic cylinders 7a3 are embedded in the pair of the sleeves 7a2, the pair of the insertion rods 7a4 are vertically mounted in the pair of the sleeves 7a2 and are respectively connected with the telescopic ends of the pair of the hydraulic cylinders 7a3, the pair of the connecting blocks 17 are respectively connected with the ends of the pair of the insertion rods 7a4, and the hydraulic controller 7a5 is mounted on the door type frame 2; the lateral movement assembly 6 comprises: a pair of fixed blocks 6a1, a screw rod 6a2 and a servo motor 6a3 which have the same structure; the pair of fixed blocks 6a1 are mounted on the connecting plate 3, the screw rod 6a2 is movably mounted on the pair of fixed blocks 6a1, and the servo motor 6a3 is mounted on one side of one of the pair of fixed blocks 6a1 and is movably connected with the end part of the screw rod 6a 2; the bottom support assembly includes: a pair of supporting seats 11 with the same structure, a pair of fastening bolts 12 with the same structure and a pair of placing grooves 13 with the same structure; the pair of supporting seats 11 are respectively installed at two ends in a rectangular cavity of the installation test bed 1, a pair of first threaded holes with the same structure are formed in the supporting seats, two pairs of second threaded holes matched with the two threaded holes are formed in two side wall surfaces of the rectangular cavity of the test bed 1, the pair of fastening bolts 12 penetrate through the pair of second threaded holes and are in threaded connection with the pair of first threaded holes, and the upper ends of the pair of supporting seats 11 are respectively provided with a placing groove 13; the front end and the rear end of the test bed 1 are provided with openings, and high-strength toughened glass 14 is embedded on the openings; the pair of sliding plates are in I-shaped structures, and a pair of limiting plates 15 with the same structure are arranged at the lower opening edges at the two sides of the pair of sliding rails 4 matched with the sliding plates; the four corners of the bottom of the test bed 1 are provided with a plurality of support legs with the same structure, the bottom of the test bed is provided with a blanking opening, and a blanking hatch door 16 is inserted into the blanking opening.
The embodiment is characterized by comprising the following steps: step S1, weighing the components; step S2, mixing raw materials; step S3, vacuum feeding; step S4, extruding; step S5, molding; step S6, cutting and packaging; step S7, random sampling detection; s1: weighing various raw materials according to the following mixture ratio by taking the mass fraction as a unit: the inner wall pipe comprises the following raw materials in proportion: 50-55 parts of polypropylene resin, 5-8 parts of reclaimed materials, 25-28 parts of fixed fillers, 4-6 parts of stearic acid, 3-6 parts of drying agents and 3-7 parts of dark green color master batches; the outer wall pipe comprises the following raw materials in proportion: 50-53 parts of polypropylene resin, 3-7 parts of acrylonitrile, 5-10 parts of reclaimed materials, 22-25 parts of fixed fillers, 4-5 parts of stearic acid, 3-6 parts of drying agents and 3-4 parts of dark green color master batches; s2: respectively putting the inner wall pipe raw material and the outer wall pipe raw material weighed in the step S1 into a double mixer for mixing, wherein the raw materials are divided into an inner material and an outer material; s3: forcibly feeding materials into the feeding machines regularly and quantitatively by vacuum feeding, wherein the rotating speed of the feeding machines is set to be 20-30 r/min, the two feeding machines are used for continuous feeding, and the set weight is 200 kg/h; s4: putting the mixed materials into a double-cone double-screw extruder, wherein the rotating speed control range is as follows: the outer wall pipe is 26-33 r/min, the inner wall pipe is 16-23 r/min, the melt mixed material is extruded through an extrusion die at the temperature of 203-; s5: controlling and shaping traction on the extruded and molded tube blank on a molding machine in a segmented manner, and simultaneously carrying out a flaring molding process, wherein the flaring starting length is 90-120mm, the flaring ending length is 320-350mm, the molding machine is provided with at least eight segments of molding processes, the molding speed is set within the range of 400-6500mm, the speed is 88-108M/s, and a cooling fan is arranged at the periphery of the molding machine; s6: cutting the double-wall corrugated pipe by a cutting machine, and packaging in batches; s7: randomly drawing out the corrugated pipe for compression resistance detection; the MPVE corrugated pipe designed according to the method has good structural strength and can generate extremely strong supporting force, acrylonitrile is added into the outer wall pipe, so that the structural strength of the outer wall pipe is better, the outer wall pipe has better compression resistance, and simultaneously no acrylonitrile is added into the inner wall pipe, so that the toughness of the outer wall pipe is unchanged, the compression resistance is improved, the toughness of the corrugated pipe is not influenced, and the cracking condition is avoided, meanwhile, the MPVE corrugated pipe detection equipment with the compression resistance has simple structure and convenient operation, can well simulate the conditions of the corrugated pipe during the compression resistance test, can continuously adjust the pressure generated in the vertical direction through the pressure generation structure on the corrugated pipe, simulate the pressure condition of equipment with different weights on the buried pipe section, and simultaneously generate transverse movement through the transverse movement component, so that the MPVE corrugated pipe simulates the effect of repeated rolling of a vehicle, through the hydraulic controller in the hydraulic pressure subassembly, the pressure that the reaction pneumatic cylinder produced, through this kind of mode, so that take notes the pressure of pneumatic cylinder under the different states, the bottom sprag subassembly, fixed and location test pipe, place its roll-over in the experimentation, the compressive property that has realized the bellows through above structural cooperation detects, can accomplish indoor simultaneously, equipment is simple, convenient experiment, the effectual cost of having saved, and the pressure that produces can be adjusted, the compressive property of bellows under the different pressures of observation that can be better.
All the electrical components in the present application are connected with the power supply adapted to the electrical components through the wires, and an appropriate controller should be selected according to actual conditions to meet the control requirements, and specific connection and control sequences should be obtained.
Example (b): according to the attached drawings 1-8 of the specification, the MPVE corrugated pipe detection equipment with the compression resistance characteristic comprises a test bed 1 serving as an installation main body and a platform, wherein the test bed 1 is a rectangular cavity box body, the upper wall surface of the test bed is provided with an opening, and a compression resistance test mechanism is arranged on the test bed 1; the same stabilizer blade of a plurality of structures is installed in 1 bottom four corners of test bench, and both ends are the opening setting around test bench 1, and inlay the toughened glass 14 that is equipped with high strength on it, conveniently observes the inside experimental conditions, and its bottom has seted up the unloading opening, and the unloading opening cartridge has unloading hatch door 16, and unloading hatch door 16 is used for after experimental the end, spills soil from the below, and convenient clearance, compression test mechanism includes: a pressure generating structure and a bottom support assembly;
as can be seen from fig. 1 to 8 of the specification, the pressure generating structure includes: the device comprises a pair of door-shaped frames 2 with the same structure, a connecting plate 3, a pair of slide rails 4 with the same structure, a pair of sliders 5 with the same structure, a mounting plate 8, a transverse moving assembly 6, a pair of hydraulic assemblies 7 with the same structure, a pair of connecting blocks 17 with the same structure, a driving shaft 9 and a press roller 10, wherein the connecting relation and the position relation are as follows;
the pair of door-shaped frames 2 are respectively arranged at two sides of the test bed 1, the connecting plate 3 is arranged between the pair of door-shaped frames 2, the pair of slide rails 4 are arranged on the lower wall surface of the connecting plate 3 and are parallel to the test bed 1, the pair of slide plates are assembled on the pair of slide rails 4, the pair of slide plates are both in an I-shaped structure, the lower opening edges at two sides of the pair of slide rails 4 matched with the pair of slide rails are provided with a pair of limiting plates 15 with the same structure, the mounting plate 8 is arranged on the pair of slide plates, the transverse moving assembly 6 is arranged on the lower wall surface of the connecting plate 3 and is mutually connected with the mounting plate 8, the pair of hydraulic assemblies 7 are arranged on the lower wall surface of the mounting plate 8, the telescopic ends of the hydraulic assemblies are vertically downward, the pair of connecting blocks 17 are arranged on;
in the specific implementation process, a pair of door-shaped frames 2 are used as installation main bodies of a pressure generating structure and are arranged at two sides of a test bed 1 and are parallel to the axial direction of a test tube, a supporting seat 11 is fixedly connected with the ground, a connecting plate 3 is welded or fixed on the pair of door-shaped frames 2 through a threaded component, a pair of slide rails 4 are arranged on the connecting plate 3 and are parallel to the axial direction of the test tube in the horizontal direction, in the specific implementation process, a transverse component drives a mounting plate 8 to move on the slide rails 4 through a slide block 5, so that the mounting plate 8 can move transversely, a pair of hydraulic components 7 provide downward pressure, in the specific implementation process, the test tube is arranged in a cavity of the test bed 1, a bottom supporting component is clamped, soil with a certain height is buried on the bottom supporting component, the hydraulic components 7 are placed downwards to generate pressure, a driving shaft 9 is driven to generate pressure downwards through a connecting, the compression roller 10 generates pressure on the lower part, and meanwhile, the transverse moving assembly 6 is matched to drive the mounting plate 8 to move, so that the compression roller 10 is driven to move, and the effect generated by repeated rolling through a vehicle after the attached drawings is simulated;
as can be seen from figures 1 to 8 of the present description, the hydraulic assembly 7 comprises: a pair of fixing seats 7a1 with the same structure, a pair of sleeves 7a2 with the same structure, a pair of hydraulic cylinders 7a3 with the same structure, a pair of insertion rods 7a4 with the same structure and a hydraulic controller 7a5, wherein the connection relationship and the position relationship are as follows;
a pair of fixed seats 7a1 are mounted on the lower wall surface of the mounting plate 8, a pair of sleeves 7a2 are vertically mounted on a pair of fixed seats 7a1, a pair of hydraulic cylinders 7a3 are embedded in a pair of sleeves 7a2, a pair of insertion rods 7a4 are vertically mounted in a pair of sleeves 7a2 and are respectively connected with the telescopic ends of a pair of hydraulic cylinders 7a3, a pair of connecting blocks 17 are respectively connected with the ends of a pair of insertion rods 7a4, and a hydraulic controller 7a5 is mounted on the door type frame 2;
the pair of sleeves 7a2 are fixed through the pair of fixing seats 7a1, the inserting rods 7a4 can move up and down in the sleeves 7a2, the telescopic ends of the pair of hydraulic cylinders 7a3 are ejected out to generate downward pressure, the pair of inserting rods 7a4 are driven to generate downward pressure, the pair of connecting blocks 17 are mounted at the ends of the pair of inserting rods 7a4 and are movably connected with the driving shaft 9, and the inserting rods 7a4 and the sleeves 7a2 are mutually attached to offset the transverse pressure while the downward pressure is generated, so that the phenomenon that transverse moment is generated on the hydraulic cylinders 7a3 in the moving process to cause equipment damage is avoided;
as can be seen from fig. 1 to 8 of the specification, the lateral movement assembly 6 comprises: a pair of fixed blocks 6a1, a screw rod 6a2 and a servo motor 6a3 which have the same structure, and the connection relation and the position relation are as follows;
the pair of fixed blocks 6a1 are mounted on the connecting plate 3, the screw rod 6a2 is movably mounted on the pair of fixed blocks 6a1, and the servo motor 6a3 is mounted on one side of one of the pair of fixed blocks 6a1 and is movably connected with the end part of the screw rod 6a 2;
the pair of fixed blocks 6a1 are arranged on the connecting plate 3, the driving end is driven by a driver to drive the screw rod 6a2 to rotate, so that the screw rod is meshed with a threaded hole in the mounting plate 8, the screw rod and the mounting plate are meshed with each other, the mounting plate 8 moves under the action of threads, and the left slide block 5 and the right slide block 5 respectively move in the slide rail 4 to provide moving stability;
as can be seen from the accompanying figures 1-8 of the specification, the base support assembly comprises: a pair of supporting seats 11 with the same structure, a pair of fastening bolts 12 with the same structure and a pair of placing grooves 13 with the same structure, wherein the connection relationship and the position relationship are as follows;
the pair of supporting seats 11 are respectively installed at two ends in a rectangular cavity of the installation test bed 1, two pairs of first threaded holes with the same structure are formed in the supporting seats, two pairs of second threaded holes matched with the two pairs of first threaded holes are formed in two side wall surfaces of the rectangular cavity of the test bed 1, a pair of fastening bolts 12 penetrates through the pair of second threaded holes to be in threaded connection with the pair of first threaded holes, and placing grooves 13 are formed in the upper ends of the pair of supporting seats 11;
the supporting seat 11 is connected to one end of the rectangular cavity through a pair of fastening bolts 12 in a threaded mode, the supporting seat 11 is installed on each of two sides, when a test tube is placed in the rectangular cavity, the test tube is supported and limited through the placing groove 13, the fastening bolts 12 play a role in fixing the supporting seat 11, meanwhile, the supporting seat 11 is convenient to detach and replace, different supporting seats 11 are replaced, the sizes of the placing grooves 13 on the supporting seats are changed, and therefore test tubes with different tube diameters are fixed;
in conclusion, the MPVE corrugated pipe detection equipment with the compression resistance characteristic is simple in structure and convenient to operate, can well simulate the conditions of the corrugated pipe during the compression resistance characteristic test, can continuously adjust the pressure generated in the vertical direction through the pressure generation structure on the corrugated pipe, can simulate the pressure condition of equipment with different weights on the buried pipe section, can generate transverse movement through the transverse movement component 6 to simulate the repeated rolling effect of a vehicle, can reflect the pressure generated by the hydraulic cylinder 7a3 through the hydraulic controller 7a5 in the hydraulic component 7, can conveniently record the pressure of the hydraulic cylinder 7a3 in different states, can conveniently fix and position the test pipe through the bottom support component and the fixed and positioned test pipe, can be placed to roll in the test process, can realize the compression resistance characteristic detection of the corrugated pipe through the matching of the structures, and can be finished indoors at the same time, the equipment is simple, convenient experiment, the effectual cost of having saved, and the pressure that produces moreover can be adjusted, the compressive property of bellows under the different pressures of observation that can be better.
Sample preparation:
comparative example 1: in the specific implementation process, the operation is carried out according to the following steps and proportions:
1. weighing various raw materials according to the following mixture ratio by taking the mass fraction as a unit: the inner wall pipe comprises the following raw materials in proportion: 53 parts of polypropylene resin, 10 parts of reclaimed materials, 25 parts of fixed fillers, 6 parts of stearic acid, 6 parts of drying agents and 7 parts of dark green color master batches; the outer wall pipe comprises the following raw materials in proportion: polypropylene resin 52, acrylonitrile 3, reclaimed material 5, fixed filler 25, stearic acid 5, drying agent 6 and blackish green color master batch 4; 2. respectively putting the weighed inner wall pipe raw materials and outer wall pipe raw materials into a double mixer for mixing, wherein the inner wall pipe raw materials and the outer wall pipe raw materials are divided into an inner material and an outer material; 3. forcibly feeding materials into the feeding machines regularly and quantitatively by vacuum feeding, wherein the rotating speed of the feeding machines is set to be 20-30 r/min, the two feeding machines are used for continuous feeding, and the set weight is 200 kg/h; 4. putting the mixed materials into a double-cone double-screw extruder, controlling the rotating speed of an outer wall pipe to be 28-30 revolutions/min, the rotating speed of an inner wall pipe to be 18-20 revolutions/min, and the melt mixing materials are extruded through an extrusion die under the melt pressure of 208-plus-210 ℃ and 19MPa, wherein the extrusion die is divided into an inner opening die and an outer opening die, the inner opening die and the outer opening die are provided with adjusting screws, and the wall thickness is adjusted according to requirements; 5. controlling and shaping traction on the extruded and molded tube blank on a molding machine in a segmented manner, and simultaneously carrying out a flaring molding process, wherein the flaring starting length is controlled to be 95-100mm, the flaring ending length is controlled to be 330-335mm, the molding machine is provided with at least eight segments of molding processes, the molding speed is set to be 400-6500mm, the speed range is 88-108M/s, and the periphery of the molding machine is provided with a cooling fan; 6. cutting the double-wall corrugated pipe by a cutting machine, and packaging in batches; 7. randomly drawing the corrugated pipe to perform compression resistance detection through the equipment;
comparative example 2: in the specific implementation process, the operation is carried out according to the following steps and proportions:
1. weighing various raw materials according to the following mixture ratio by taking the mass fraction as a unit: the inner wall pipe comprises the following raw materials in proportion: 53 parts of polypropylene resin, 10 parts of reclaimed materials, 25 parts of fixed fillers, 6 parts of stearic acid, 6 parts of drying agents and 7 parts of dark green color master batches; the outer wall pipe comprises the following raw materials in proportion: polypropylene resin 51, acrylonitrile 5, reclaimed material 8, fixed filler 23, stearic acid 4, drying agent 6 and blackish green color master batch 3; 2. respectively putting the weighed inner wall pipe raw materials and outer wall pipe raw materials into a double mixer for mixing, wherein the inner wall pipe raw materials and the outer wall pipe raw materials are divided into an inner material and an outer material; 3. forcibly feeding materials into the feeding machines regularly and quantitatively by vacuum feeding, wherein the rotating speed of the feeding machines is set to be 20-30 r/min, the two feeding machines are used for continuous feeding, and the set weight is 200 kg/h; 4. putting the mixed materials into a double-cone double-screw extruder, controlling the rotating speed of an outer wall pipe to be 28-30 revolutions/min, the rotating speed of an inner wall pipe to be 18-20 revolutions/min, and the melt mixing materials are extruded through an extrusion die under the melt pressure of 208-plus-210 ℃ and 19MPa, wherein the extrusion die is divided into an inner opening die and an outer opening die, the inner opening die and the outer opening die are provided with adjusting screws, and the wall thickness is adjusted according to requirements; 5. controlling and shaping traction on the extruded and molded tube blank on a molding machine in a segmented manner, and simultaneously carrying out a flaring molding process, wherein the flaring starting length is controlled to be 95-100mm, the flaring ending length is controlled to be 330-335mm, the molding machine is provided with at least eight segments of molding processes, the molding speed is set to be 400-6500mm, the speed range is 88-108M/s, and the periphery of the molding machine is provided with a cooling fan; 6. cutting the double-wall corrugated pipe by a cutting machine, and packaging in batches; 7. randomly drawing the corrugated pipe to perform compression resistance detection through the equipment;
comparative example 3: in the specific implementation process, the operation is carried out according to the following steps and proportions:
1. weighing various raw materials according to the following mixture ratio by taking the mass fraction as a unit: the inner wall pipe comprises the following raw materials in proportion: 53 parts of polypropylene resin, 10 parts of reclaimed materials, 25 parts of fixed fillers, 6 parts of stearic acid, 6 parts of drying agents and 7 parts of dark green color master batches; the outer wall pipe comprises the following raw materials in proportion: 50 parts of polypropylene resin, 7 parts of acrylonitrile, 6 parts of reclaimed materials, 22 parts of fixed fillers, 5 parts of stearic acid, 6 parts of drying agents and 4 parts of dark green color master batch; 2. respectively putting the weighed inner wall pipe raw materials and outer wall pipe raw materials into a double mixer for mixing, wherein the inner wall pipe raw materials and the outer wall pipe raw materials are divided into an inner material and an outer material; 3. forcibly feeding materials into the feeding machines regularly and quantitatively by vacuum feeding, wherein the rotating speed of the feeding machines is set to be 20-30 r/min, the two feeding machines are used for continuous feeding, and the set weight is 200 kg/h; 4. putting the mixed materials into a double-cone double-screw extruder, controlling the rotating speed of an outer wall pipe to be 28-30 revolutions/min, the rotating speed of an inner wall pipe to be 18-20 revolutions/min, and the melt mixing materials are extruded through an extrusion die under the melt pressure of 208-plus-210 ℃ and 19MPa, wherein the extrusion die is divided into an inner opening die and an outer opening die, the inner opening die and the outer opening die are provided with adjusting screws, and the wall thickness is adjusted according to requirements; 5. controlling and shaping traction on the extruded and molded tube blank on a molding machine in a segmented manner, and simultaneously carrying out a flaring molding process, wherein the flaring starting length is controlled to be 95-100mm, the flaring ending length is controlled to be 330-335mm, the molding machine is provided with at least eight segments of molding processes, the molding speed is set to be 400-6500mm, the speed range is 88-108M/s, and the periphery of the molding machine is provided with a cooling fan; 6. cutting the double-wall corrugated pipe by a cutting machine, and packaging in batches; 7. randomly drawing the corrugated pipe to perform compression resistance detection through the equipment;
the prepared samples are respectively put into a test bed 1 of a detection device for strength detection, the sample of the comparative example 1 generates deformation under the condition of rolling of about 70 tons when the numerical value of a hydraulic controller 7a5 is 8.2Kn/m2, the sample of the comparative example 1 generates collapse under the condition of forward pressure of about 75 tons when the numerical value of the hydraulic controller 7a5 is 8.2Kn/m2, the forward compressive performance of the sample of the comparative example 2 reaches 9.5Kn/m2, and the sample of the comparative example 3 has higher compressive strength, but the outer wall pipe is more brittle under the condition of the same pressure, and generates fragmentation rather than collapse, so the proportioning effect of the comparative example 2 is better.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (10)
1. The preparation method of the MPVE corrugated pipe with the compression resistance characteristic is characterized by comprising the following steps: step S1, weighing the components; step S2, mixing raw materials; step S3, vacuum feeding; step S4, extruding; step S5, molding; step S6, cutting and packaging; step S7, random sampling detection;
s1: weighing various raw materials according to the following mixture ratio by taking the mass fraction as a unit:
the inner wall pipe comprises the following raw materials in proportion: 50-55 parts of polypropylene resin, 5-8 parts of reclaimed materials, 25-28 parts of fixed fillers, 4-6 parts of stearic acid, 3-6 parts of drying agents and 3-7 parts of dark green color master batches;
the outer wall pipe comprises the following raw materials in proportion: 50-53 parts of polypropylene resin, 3-7 parts of acrylonitrile, 5-10 parts of reclaimed materials, 22-25 parts of fixed fillers, 4-5 parts of stearic acid, 3-6 parts of drying agents and 3-4 parts of dark green color master batches;
s2: respectively putting the inner wall pipe raw material and the outer wall pipe raw material weighed in the step S1 into a double mixer for mixing, wherein the raw materials are divided into an inner material and an outer material;
s3: forcibly feeding materials into the feeding machines regularly and quantitatively by vacuum feeding, wherein the rotating speed of the feeding machines is set to be 20-30 r/min, the two feeding machines are used for continuous feeding, and the set weight is 200 kg/h;
s4: putting the mixed materials into a double-cone double-screw extruder, wherein the rotating speed control range is as follows: the outer wall pipe is 26-33 r/min, the inner wall pipe is 16-23 r/min, the melt mixed material is extruded through an extrusion die at the temperature of 203-;
s5: controlling and shaping traction on the extruded and molded tube blank on a molding machine in a segmented manner, and simultaneously carrying out a flaring molding process, wherein the flaring starting length is 90-120mm, the flaring ending length is 320-350mm, the molding machine is provided with at least eight segments of molding processes, the molding speed is set within the range of 400-6500mm, the speed is 88-108M/s, and a cooling fan is arranged at the periphery of the molding machine;
s6: cutting the double-wall corrugated pipe by a cutting machine, and packaging in batches;
s7: and randomly drawing the corrugated pipe for pressure resistance detection.
2. The method for preparing an MPVE corrugated pipe with compression resistance as claimed in claim 1, wherein the inner wall pipe in step S1 comprises the following raw materials in proportion: polypropylene resin 52, a reclaimed material 7, a fixed filler 26, stearic acid 5, a drying agent 5 and blackish green color master batch 5;
the outer wall pipe comprises the following raw materials in proportion: the composite material comprises 51 parts of polypropylene resin, 5 parts of acrylonitrile, 8 parts of reclaimed materials, 23 parts of fixed fillers, 4 parts of stearic acid, 6 parts of drying agents and 3 parts of dark green color master batch.
3. The method as claimed in claim 1, wherein the step S4 further comprises controlling the rotation speed of the outer wall tube at 28-30 rpm, the rotation speed of the inner wall tube at 18-20 rpm, and the melting temperature at 208-210 ℃.
4. The method as claimed in claim 1, wherein the step S5 further controls the flaring start length to be 95-100mm and the flaring end length to be 330-335 mm.
5. The MPVE corrugated pipe detection equipment with the compression resistance characteristic comprises a test bed (1), and is characterized in that the test bed (1) is a rectangular cavity box body, the upper wall surface of the test bed (1) is provided with an opening, and a compression resistance test mechanism is arranged on the test bed (1);
the compression test mechanism comprises: a pressure generating structure and a bottom support assembly;
the pressure generating structure includes: the device comprises a pair of door-shaped frames (2) with the same structure, a connecting plate (3), a pair of sliding rails (4) with the same structure, a pair of sliding blocks (5) with the same structure, a mounting plate (8), a transverse moving assembly (6), a pair of hydraulic assemblies (7) with the same structure, a pair of connecting blocks (17) with the same structure, a driving shaft (9) and a pressing roller (10);
the pair of door-shaped frames (2) are respectively arranged at two sides of the test bed (1), the connecting plate (3) is arranged between the pair of door-shaped frames (2), the pair of slide rails (4) are arranged on the lower wall surface of the connecting plate (3) and are parallel to the test bed (1), the pair of slide plates are assembled on the pair of slide rails (4), the mounting plate (8) is arranged on the pair of slide plates, the transverse moving assembly (6) is arranged on the lower wall surface of the connecting plate (3) and is mutually connected with the mounting plate (8), the pair of hydraulic assemblies (7) are arranged on the lower wall surface of the mounting plate (8) and the telescopic ends of the hydraulic assemblies are vertically downward, the pair of connecting blocks (17) are arranged on the pair of hydraulic assemblies (7) and are provided with a pair of bearing holes with the same structure, and the driving shaft (9) is arranged in the pair of bearing holes, the compression roller (10) is sleeved on the driving shaft (9);
the hydraulic assembly (7) comprises: a pair of fixing seats (7a1) with the same structure, a pair of sleeves (7a2) with the same structure, a pair of hydraulic cylinders (7a3) with the same structure, a pair of inserted rods (7a4) with the same structure and a hydraulic controller (7a 5);
the pair of fixing seats (7a1) is mounted on the lower wall surface of a mounting plate (8), the pair of sleeves (7a2) is vertically mounted on the pair of fixing seats (7a1) downwards, the pair of hydraulic cylinders (7a3) is embedded in the pair of sleeves (7a2), the pair of insertion rods (7a4) is vertically mounted in the pair of sleeves (7a2) and is respectively connected with the telescopic ends of the pair of hydraulic cylinders (7a3), the pair of connecting blocks (17) is respectively connected with the ends of the pair of insertion rods (7a4), and the hydraulic controller (7a5) is mounted on a door-shaped frame (2).
6. The MPVE bellow detection device of pressure resistant characteristics according to claim 5, characterized in that said transversal movement assembly (6) comprises: a pair of fixed blocks (6a1), a screw rod (6a2) and a servo motor (6a3) which have the same structure;
the pair of fixed blocks (6a1) is mounted on the connecting plate (3), the screw rod (6a2) is movably mounted on the pair of fixed blocks (6a1), and the servo motor (6a3) is mounted on one side of one of the pair of fixed blocks (6a1) and is movably connected with the end part of the screw rod (6a 2).
7. The MPVE bellows test device of claim 5, wherein the bottom support assembly comprises: a pair of supporting seats (11) with the same structure, a pair of fastening bolts (12) with the same structure and a pair of placing grooves (13) with the same structure;
the pair of supporting seats (11) are respectively installed at two ends in a rectangular cavity of the installation test bed (1), a pair of first threaded holes with the same structure are formed in the supporting seats, two pairs of second threaded holes matched with the two pairs of supporting seats are formed in two side wall surfaces of the rectangular cavity of the test bed (1), the pair of fastening bolts (12) penetrate through the pair of second threaded holes to be in threaded connection with the pair of first threaded holes, and placing grooves (13) are formed in the upper ends of the pair of supporting seats (11).
8. The MPVE corrugated pipe detection equipment for the compression resistance property according to claim 5, characterized in that the front end and the rear end of the test bed (1) are arranged in an open manner, and high-strength tempered glass (14) is embedded on the test bed.
9. The MPVE corrugated pipe detection equipment with compression resistance according to claim 5, wherein each pair of sliding plates is in an I-shaped structure, and a pair of limiting plates (15) with the same structure are mounted at the lower opening edges on two sides of a pair of sliding rails (4) matched with the sliding plates.
10. The MPVE corrugated pipe detection equipment with the compression resistance characteristics as claimed in claim 5, wherein a plurality of support legs with the same structure are arranged at four corners of the bottom of the test bed (1), a blanking opening is formed in the bottom of the test bed, and a blanking door (16) is inserted into the blanking opening.
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| CN201910948726.0A CN110901117B (en) | 2019-10-08 | 2019-10-08 | Preparation method and detection equipment of MPVE corrugated pipe with compression resistance characteristic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116604851A (en) * | 2023-07-20 | 2023-08-18 | 河北陕拓节能科技有限公司 | Manufacturing system for polyurethane heat-insulation pipe |
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| CN116604851B (en) * | 2023-07-20 | 2023-09-19 | 河北陕拓节能科技有限公司 | Manufacturing system for polyurethane heat-insulation pipe |
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| CN110901117B (en) | 2021-09-14 |
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Application publication date: 20200324 Assignee: Jiangxi Dehui New Pipeline Manufacturing Co.,Ltd. Assignor: JIANGXI DEYIKANG PIPE INDUSTRY CO.,LTD. Contract record no.: X2024980001680 Denomination of invention: Preparation method and testing equipment for MPVE corrugated pipes with compressive properties Granted publication date: 20210914 License type: Common License Record date: 20240129 |
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Denomination of invention: Preparation method and testing equipment for MPVE corrugated pipes with compressive properties Granted publication date: 20210914 Pledgee: Jiangxi Ruichang Rural Commercial Bank Co.,Ltd. Saihu Branch Pledgor: JIANGXI DEYIKANG PIPE INDUSTRY CO.,LTD. Registration number: Y2024980009004 |