CN110861333B - Preparation method and detection equipment of MPVE corrugated pipe with high impact resistance characteristic - Google Patents
Preparation method and detection equipment of MPVE corrugated pipe with high impact resistance characteristic Download PDFInfo
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- CN110861333B CN110861333B CN201910948960.3A CN201910948960A CN110861333B CN 110861333 B CN110861333 B CN 110861333B CN 201910948960 A CN201910948960 A CN 201910948960A CN 110861333 B CN110861333 B CN 110861333B
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000009863 impact test Methods 0.000 claims abstract description 25
- 230000000670 limiting effect Effects 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 239000000725 suspension Substances 0.000 claims description 37
- 239000000463 material Substances 0.000 abstract description 55
- 239000002994 raw material Substances 0.000 abstract description 34
- 238000000034 method Methods 0.000 abstract description 29
- 238000005520 cutting process Methods 0.000 abstract description 18
- 239000004925 Acrylic resin Substances 0.000 abstract description 15
- 229920000178 Acrylic resin Polymers 0.000 abstract description 15
- 238000001816 cooling Methods 0.000 abstract description 14
- 238000001125 extrusion Methods 0.000 abstract description 14
- 238000007493 shaping process Methods 0.000 abstract description 14
- 238000002156 mixing Methods 0.000 abstract description 13
- 238000004806 packaging method and process Methods 0.000 abstract description 10
- 229920013716 polyethylene resin Polymers 0.000 abstract description 9
- 239000004698 Polyethylene Substances 0.000 description 15
- -1 polyethylene Polymers 0.000 description 13
- 229920000573 polyethylene Polymers 0.000 description 13
- 235000021355 Stearic acid Nutrition 0.000 description 12
- 239000004595 color masterbatch Substances 0.000 description 12
- 239000002274 desiccant Substances 0.000 description 12
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 12
- 239000000945 filler Substances 0.000 description 12
- 238000000465 moulding Methods 0.000 description 12
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 12
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 12
- 239000008117 stearic acid Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000007547 defect Effects 0.000 description 8
- 239000000155 melt Substances 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000010865 sewage Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004154 testing of material Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation method and detection equipment of an MPVE corrugated pipe with high impact resistance, which comprises the following operation steps: step S1, proportioning raw materials; step S2, blending materials; step S3, dosing; step S4, extrusion molding; step S5, cooling and shaping; step S6, cutting the pipe; step S7, impact detection; and S8, packaging and leaving factory, wherein the ratio of polyethylene resin to acrylic resin is adjusted to produce the MPVE corrugated pipe with high impact resistance, the produced pipe is detected with high impact resistance, a limiting fixing mechanism on an operation table is matched to perform auxiliary fixing on the sample pipe, so that the influence on the test result caused by the shaking and deviation of the pipe in the impact test process is reduced, the pipe is subjected to impact test through an adjustable impact test mechanism arranged on the operation table, and the test result is collected and processed, so that the structure is simple.
Description
The invention relates to the technical field of MPVE corrugated pipes, in particular to a preparation method and detection equipment of an MPVE corrugated pipe with high impact resistance.
Background
The PE corrugated pipe, namely the plastic protective sleeve extruded and formed by polyethylene material, is called the corrugated pipe because its inside and outside are the annular ripple, play a role in protecting the cable from being damaged, the wearability is good, the characteristic such as being corrosion-resistant, wear-resisting and aging-resistant, green, so the PE corrugated pipe is also commonly used as the sewage branch pipe, the double-walled corrugated pipe is a new light tubular product taking high density polyethylene as raw materials, have light in weight, high pressure resistant, good toughness, constructing the characteristics such as being fast and long-lived, etc., its excellent pipe wall structural design, compared with tubular product of other structures, the cost is greatly reduced, and because connect convenient, reliable, get the wide application at home and abroad, substitute concrete pipe and cast iron pipe in a large number, the wide application is buried and drained and discharged underground in municipal works, residential quarters; pre-burying a pipeline on the expressway; irrigation and water delivery and drainage of the farmland; chemical engineering and mines are used in the fields of fluid transportation and the like.
However, although the existing polyethylene corrugated pipe has good toughness, the existing polyethylene corrugated pipe has the defects of insufficient rigidity and fast oxidation, the polyvinyl chloride corrugated pipe has good rigidity and poor toughness, and the defects of the pipe are overcome by the appearance of the MPVE double-wall corrugated pipe.
Disclosure of Invention
The invention aims to solve the problems, designs a preparation method and detection equipment of the MPVE corrugated pipe with high impact resistance, solves the defects of insufficient rigidity and quicker oxidation of the existing polyethylene corrugated pipe although the existing polyethylene corrugated pipe has good toughness, the polyvinyl chloride corrugated pipe has good rigidity but poor toughness, the defects of the pipe are overcome by the MPVE double-wall corrugated pipe, the main application field is the double-wall corrugated pipe for rain and sewage in the municipal field, and the polyvinyl chloride corrugated pipe can also be used as a protective sleeve pipe, an industrial drainage pipe and a sewage discharge pipe in the communication field, however, in the prior art, the detection of the high impact resistance characteristic of the MPVE corrugated pipe is simple, the drop hammer impact test is mostly adopted, and special equipment is not used for detecting the high-impact resistance characteristic of the MPVE corrugated pipe, fragments are easy to splash in the detection process, and certain potential safety hazards exist.
The technical scheme of the invention for realizing the aim is as follows: the preparation method of the MPVE corrugated pipe with high impact resistance comprises the following operation steps: step S1, proportioning raw materials; step S2, blending materials; step S3, dosing; step S4, extrusion molding; step S5, cooling and shaping; step S6, cutting the pipe; step S7, impact detection; step S8, packaging and leaving factory;
step S1: preparing raw materials of the outer wall pipe, wherein the mixture ratio is as follows: 33-48% of polyethylene resin, 32-45% of acrylic resin, 3-4% of recycled materials, 7-8% of fixed fillers, 3-4% of stearic acid, 4-6% of drying agents, 3-5% of dark green color master batches and 4-7% of talcum powder; preparing inner wall tube raw materials: 33-47% of polyethylene, 36-46% of acrylic resin, 3-4% of recycled materials, 7-8% of fixed fillers, 3-4% of stearic acid, 4-6% of drying agents, 3-5% of dark green color master batches and 4-7% of talcum powder;
step S2: respectively mixing the outer wall pipe raw material and the inner wall pipe raw material, and putting the raw material prepared in the step S1 into a double mixer for mixing, wherein the raw material is divided into an inner material and an outer material;
step S3: forcibly feeding materials into the feeding machines regularly and quantitatively by a vacuum feeding machine, wherein the rotating speed of the feeding machines is set to be 24-30 r/min, the two feeding machines are used for continuously feeding materials, and the set weight is 270-280 kg/h;
step 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 28-33 r/min, the inner wall pipe is 19-23 r/min, and the melt mixed material is extruded through an extrusion die at the temperature of 200-210 ℃ and the melt pressure of 19MPa, 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;
step S5: controlling and shaping traction on the extruded and molded tube blank on a forming machine in a segmented mode, simultaneously carrying out a flaring molding process, wherein the flaring starting length is 90-110mm, the flaring ending length is 340-360mm, the forming machine is provided with at least eight segments of molding processes, the molding speed is set between 500-6000mm, the speed range is 95-100m/s, and cooling and shaping are carried out on the molded pipeline through a cooling machine;
step S6: cutting the formed corrugated pipe material by a cutting machine, and stacking the cut corrugated pipe material after the cutting is finished;
step S7: randomly picking a certain number of MPVE corrugated pipes from the produced corrugated pipes, and detecting the high-impact resistance characteristic of the MPVE corrugated pipes through detection equipment;
step S8: and packaging the finished product and leaving the factory after the corrugated pipe is detected to be qualified.
In the step S1, raw materials of the outer wall pipe are prepared, and the mixture ratio is as follows: 36% of polyethylene resin, 37% of acrylic resin, 4% of recycled materials, 7% of fixed fillers, 3% of stearic acid, 4% of drying agents, 5% of dark green color master batch and 4% of talcum powder; preparing inner wall tube raw materials: 35% of polyethylene, 38% of acrylic resin, 4% of a recycle material, 7% of a fixed filler, 3% of stearic acid, 4% of a drying agent, 5% of dark green color master batch and 4% of talcum powder.
In step S3, the rotation speed of the feeders is set to 27 rpm, two feeders are continuously feeding, and the set weight is 270 kg/h.
And S4, putting the mixed materials into a double-cone double-screw extruder, and controlling the rotating speed of the double-cone double-screw extruder, wherein the outer wall pipe is 31 revolutions per minute, and the inner wall pipe is 21 revolutions per minute.
In the step S7, 8 MPVE corrugated pipes with a length of 1m are selected and placed in the detection equipment to perform detection of high impact resistance characteristics.
The detection equipment for the MPVE corrugated pipe with the high impact resistance characteristic comprises a support frame and an operation table, wherein the operation table is arranged on the support frame, a limiting and fixing mechanism is arranged on the operation table, an adjustable impact testing mechanism is arranged on the operation table and is positioned on one side of the limiting and fixing mechanism, and an auxiliary protection mechanism is arranged on the side wall of the operation table;
spacing fixed establishment includes: the cushion block and a pair of limiting and fixing structures with the same structure;
the operating platform is provided with a rectangular groove, the cushion block is embedded in the rectangular groove, and the pair of limiting and fixing structures are respectively arranged at the two ends of the cushion block;
the adjustable impact testing mechanism comprises: the device comprises a suspension, a lifting adjusting structure, a drop hammer control structure and a hammer head;
the suspension is arranged on the operating platform and located on one side of the cushion block, the lifting adjusting structure is arranged on the side wall of the suspension, the drop hammer control structure is arranged on the lifting adjusting structure, and the hammer head is clamped on the drop hammer control structure;
the auxiliary guard mechanism includes: two pairs of protection plates with the same structure and a protection plate control structure;
the protection plates with the same structures are arranged on the side wall of the operating platform respectively, the two pairs of protection plates are connected with each other, are in rectangular sleeve structures and are movably connected with the side wall of the operating platform, and the protection plate control structures are arranged on the support frame and are connected with the protection plates.
Spacing fixed knot constructs includes: the fixing groove, the pair of arc plates with the same structure, the connecting block, the spring and the pair of rubber strips with the same structure;
the fixed groove is arranged on one side of the cushion block, the arc-shaped plates are connected with the side walls of the fixed groove through pin shafts respectively, the connecting block is arranged above the fixed groove, two side wall surfaces are hinged with one end of each arc-shaped plate, the spring is arranged in the fixed groove, one end of the spring is connected with the lower side wall surface of the fixed groove, and the other end of the spring is connected with the lower end surface of the connecting block.
The lift adjustment structure includes: the device comprises a first servo motor, a threaded rod, a pair of limiting grooves with the same structure, a moving block, a threaded sleeve and a scale;
the first servo motor is arranged on the operating platform in the vertical direction and located in the suspension, the threaded rod is arranged in the suspension, two ends of the threaded rod are respectively movably connected with the suspension and connected with the driving end of the first servo motor, the limiting grooves are arranged in the suspension and located on two sides of the threaded rod, two ends of the moving block are sleeved in the limiting grooves, a first through hole is formed in the center of the moving block, the threaded sleeve is embedded in the first through hole and spirally sleeved on the threaded rod, and the scale is arranged on the side wall of the suspension.
The drop hammer control structure includes: the device comprises a fixed plate, a first electric push rod, a slide rail, a slide block, a special-shaped plate and a pair of V-shaped rods with the same structure;
the fixed plate is arranged on the side wall of the moving block, a U-shaped groove is formed in one side of the fixed plate, the first electric push rod is arranged on the fixed plate in the horizontal direction, the driving end of the first electric push rod is opposite to the U-shaped groove, the sliding rail is arranged on the fixed plate, the sliding block is sleeved on the sliding rail and is connected with the movable end of the first electric push rod, the special-shaped plate is of a Y-shaped structure, one end of the special-shaped plate is connected with the sliding block, the V-shaped rods are arranged on the fixed plate respectively and are connected with the fixed plate through a pin shaft, one end of each V-shaped rod is provided with a long round hole, the other two ends of the special-shaped plate are sleeved in the long round holes in the V-shaped rods respectively, and the other ends of the V-shaped rods are provided with gaskets.
The guard plate control structure includes: the guide rail mechanism comprises a pair of chutes with the same structure, a pair of guide rails with the same structure, a straight pin screw rod module and a fixed block;
the pair of sliding grooves are respectively arranged on the front side wall surface of the supporting frame, the pair of guide rails are respectively arranged on two ends of the inner side wall surface of the protection plate and are respectively sleeved in the pair of sliding grooves, the straight pin screw rod module is arranged on the front side wall surface of the supporting frame, and the fixed block is arranged on the protection plate and is connected with the movable end of the straight pin screw rod module.
The MPVE corrugated pipe with high impact resistance is produced by adjusting the ratio of polyethylene resin to acrylic resin, the produced pipe is detected with high impact resistance, when detecting, the sample pipe is placed on an operation table, and is matched with a limit fixing mechanism on the operation table to perform auxiliary fixing on the sample pipe, so that the influence of shaking and deviation of the pipe on a test result in an impact test process is reduced, the pipe is subjected to impact test through an adjustable impact testing mechanism arranged on the operation table, and the test result is collected and processed, the structure is simple, and meanwhile, in the test process, the auxiliary protection mechanism is matched to protect a test space, so that the problem that the existing polyethylene corrugated pipe is good in toughness is solved, but have the defect that rigidity is not enough, the oxidation is faster, and polyvinyl chloride bellows rigidity is good, but toughness is poor, the defect of above-mentioned tubular product has been compensatied in the appearance of MPVE double-walled bellows, the main field of use is the rain of municipal administration field, the double-walled bellows is used to sewage, can also use the protective sleeve of communication field, industry drainage, blow off pipe, but the detection to the high impact resistant characteristic of MPVE bellows among the prior art is comparatively simple, mostly adopt the mode of drop hammer impact test to carry out, do not have professional equipment to carry out the high impact resistant characteristic's of MPVE bellows detection, and produce the fragment easily in the testing process and splash, have the problem of certain potential safety hazard.
Drawings
Fig. 1 is a schematic front view structure diagram of the manufacturing method of the MPVE corrugated pipe with high impact resistance and detection equipment according to the present invention.
Fig. 2 is a schematic diagram of a partially enlarged structure of the method for manufacturing the MPVE corrugated tube with high impact resistance and high resistance and the detection device in fig. 1.
Fig. 3 is a left-view structural schematic diagram of the manufacturing method of the MPVE corrugated tube with high impact resistance and the detection device of the present invention.
Fig. 4 is a schematic top view of the manufacturing method of the MPVE corrugated tube with high impact resistance and the detection device according to the present invention.
Fig. 5 is a schematic diagram of a right-view structure of the manufacturing method of the MPVE corrugated tube with high impact resistance and the detection device of the present invention.
Fig. 6 is a schematic view of a partially enlarged structure of a position a of the detection device and the method for manufacturing the MPVE corrugated tube with high impact resistance.
Fig. 7 is a schematic view of a partial enlarged structure of a b position of the detection device and the method for manufacturing the MPVE corrugated tube with high impact resistance.
Fig. 8 is a schematic view of a partial enlarged structure of the position c of the detection device and the method for manufacturing the MPVE corrugated tube with high impact resistance.
Fig. 9 is a schematic diagram of a local enlarged structure of a d position of the method for manufacturing the MPVE corrugated tube with high impact resistance and detection equipment according to the present invention.
Fig. 10 is a schematic front view structural diagram of the manufacturing method of the MPVE corrugated tube with high impact resistance and the detection device of the invention in the lifting state of the auxiliary protection mechanism.
In the figure: 1-a support frame; 2-an operation table; 3-cushion block; 4-suspension; 5-a hammer head; 6-protection plate; 7-fixing grooves; 8-arc-shaped plates; 9-connecting blocks; 10-a spring; 11-rubber strips; 12-a first servo motor; 13-a threaded rod; 14-a limiting groove; 15-a moving block; 16-a threaded sleeve; 17-a scale; 18-a fixed plate; 19-a first electric push rod; 20-a slide rail; 21-a slide block; 22-a profiled sheet; 23-V shaped rods; 24-a chute; 25-a guide rail; 26-straight pin screw rod module; and 27, fixing blocks.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, and as shown in fig. 1 to 10, a method for manufacturing an MPVE corrugated tube with high impact resistance characteristics includes the following steps: step S1, proportioning raw materials; step S2, blending materials; step S3, dosing; step S4, extrusion molding; step S5, cooling and shaping; step S6, cutting the pipe; step S7, impact detection; step S8, packaging and leaving factory; step S1: preparing raw materials of the outer wall pipe, wherein the mixture ratio is as follows: 33-48% of polyethylene resin, 32-45% of acrylic resin, 3-4% of recycled materials, 7-8% of fixed fillers, 3-4% of stearic acid, 4-6% of drying agents, 3-5% of dark green color master batches and 4-7% of talcum powder; preparing inner wall tube raw materials: 33-47% of polyethylene, 36-46% of acrylic resin, 3-4% of recycled materials, 7-8% of fixed fillers, 3-4% of stearic acid, 4-6% of drying agents, 3-5% of dark green color master batches and 4-7% of talcum powder; step S2: respectively mixing the outer wall pipe raw material and the inner wall pipe raw material, and putting the raw material prepared in the step S1 into a double mixer for mixing, wherein the raw material is divided into an inner material and an outer material; step S3: forcibly feeding materials into the feeding machines regularly and quantitatively by a vacuum feeding machine, wherein the rotating speed of the feeding machines is set to be 24-30 r/min, the two feeding machines are used for continuously feeding materials, and the set weight is 270-280 kg/h; step 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 28-33 r/min, the inner wall pipe is 19-23 r/min, and the melt mixed material is extruded through an extrusion die at the temperature of 200-210 ℃ and the melt pressure of 19MPa, 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; step S5: controlling and shaping traction on the extruded and molded tube blank on a forming machine in a segmented mode, simultaneously carrying out a flaring molding process, wherein the flaring starting length is 90-110mm, the flaring ending length is 340-360mm, the forming machine is provided with at least eight segments of molding processes, the molding speed is set between 500-6000mm, the speed range is 95-100m/s, and cooling and shaping are carried out on the molded pipeline through a cooling machine; step S6: cutting the formed corrugated pipe material by a cutting machine, and stacking the cut corrugated pipe material after the cutting is finished; step S7: randomly picking a certain number of MPVE corrugated pipes from the produced corrugated pipes, and detecting the high-impact resistance characteristic of the MPVE corrugated pipes through detection equipment; step S8: and packaging the finished product and then leaving the factory after the corrugated pipe is detected to be qualified, wherein in the step S1, raw materials of the outer wall pipe are prepared, and the mixture ratio is as follows: 36% of polyethylene resin, 37% of acrylic resin, 4% of recycled materials, 7% of fixed fillers, 3% of stearic acid, 4% of drying agents, 5% of dark green color master batch and 4% of talcum powder; preparing inner wall tube raw materials: 35% of polyethylene, 38% of acrylic resin, 4% of recycled materials, 7% of fixed fillers, 3% of stearic acid, 4% of drying agents, 5% of dark green color masterbatch and 4% of talcum powder, wherein in the step S3, the rotating speed of the feeding machines is set to be 27 revolutions per minute, the two feeding machines are used for continuous feeding, the set weight is 270kg/h, in the step S4, the mixed materials are placed into a double-cone double-screw extruder, the rotating speed is controlled, the outer wall pipe is 31 revolutions per minute, the inner wall pipe is 21 revolutions per minute, in the step S7, 8 MPVE corrugated pipes with the length of 1m are selected and placed into detection equipment, and high-impact resistance characteristic detection is carried out.
6. High resistant MPVE bellows's of anti characteristic of impact check out test set, including support frame 1 and operation panel 2, operation panel 2 install in on the support frame 1, install spacing fixed establishment on the operation panel 2, install adjustable impact testing mechanism on the operation panel 2, and be located spacing fixed establishment one side, installed supplementary protection machanism on the 2 lateral walls of operation panel, spacing fixed establishment includes: cushion 3 and a pair of spacing fixed knot that the structure is the same construct, the rectangular channel has been seted up on the operation panel 2, cushion 3 inlays the dress in the rectangular channel, it is a pair of spacing fixed knot constructs to install respectively in 3 both ends positions of cushion, impact testing mechanism includes with adjustable: the device comprises a suspension 4, a lifting adjusting structure, a drop hammer control structure and a hammer head 5, wherein the suspension 4 is arranged on the operating platform 2 and is positioned on one side of the cushion block 3, the lifting adjusting structure is arranged on the side wall of the suspension 4, the drop hammer control structure is arranged on the lifting adjusting structure, and the hammer head 5 is clamped on the drop hammer control structure;
the auxiliary guard mechanism includes: two pairs of guard plates 6 and backplate control structure that the structure is the same, two pairs the guard plate 6 that the structure is the same is installed respectively on 2 lateral walls of operation panel, and two pairs interconnect between the guard plate 6, be rectangle nested structure and with 2 lateral wall swing joint of operation panel, guard plate 6 control structure install in on the support frame 1, and with the backplate is connected, spacing fixed knot constructs and includes: fixed slot 7, a pair of arc 8, connecting block 9 that the structure is the same, spring 10 and a pair of rubber strip 11 that the structure is the same, fixed slot 7 install in 3 one sides of cushion, it is a pair of arc 8 respectively with 7 lateral walls of fixed slot adopt the round pin hub connection, connecting block 9 install in 7 tops of fixed slot, and both sides wall respectively with a pair of 8 one ends of arc are articulated each other, spring 10 install in fixed slot 7, and one end with 7 downside wall of fixed slot are connected, and the other end with the terminal surface is connected under connecting block 9, the lift adjustment structure includes: first servo motor 12, threaded rod 13, a pair of spacing groove 14, movable block 15, thread bush 16 and scale 17 that the structure is the same, first servo motor 12 install on operation panel 2 along the vertical direction, and be located in suspension 4, threaded rod 13 install in suspension 4, and both ends respectively with suspension 4 swing joint, and with the drive end of first servo motor 12 is connected, a pair of spacing groove 14 install respectively in suspension 4, and be located threaded rod 13 both sides, movable block 15 both ends suit is in a pair of spacing groove 14, first through-hole has been seted up on the movable block 15 central point, thread bush 16 inlays to be adorned in the first through-hole, and the spiral suit is on threaded rod 13, scale 17 installs on the suspension 4 lateral wall, the drop hammer control structure includes: the special-shaped plate 22 is of a Y-shaped structure, one end of the special-shaped plate 22 is connected with the sliding block 20, the pair of V-shaped rods 23 are respectively arranged on the fixed plate 18 and respectively connected with a pin shaft of the fixed plate 18, one end of each of the pair of V-shaped rods 23 is respectively provided with a long round hole, the other two ends of the special-shaped plate 22 are respectively sleeved in the long round holes of the V-shaped rods 23, a gasket is arranged at the other end of each of the pair of V-shaped rods 23, and the guard plate control structure comprises: the protective plate comprises a pair of chutes 24 with the same structure, a pair of guide rails 25 with the same structure, a straight pin screw rod module 26 and a fixed block 27, wherein the chutes 24 are respectively arranged on the front side wall surface of the support frame 1, the guide rails 25 are respectively arranged on two ends of the inner side wall surface of the protective plate 6 and are respectively sleeved in the chutes 24, the straight pin screw rod module 26 is arranged on the front side wall surface of the support frame 1, and the fixed block 27 is arranged on the protective plate 6 and is connected with the movable end of the straight pin screw rod module 26.
The implementation scheme is characterized by comprising the following operation steps: step S1, proportioning raw materials; step S2, blending materials; step S3, dosing; step S4, extrusion molding; step S5, cooling and shaping; step S6, cutting the pipe; step S7, impact detection; step S8, packaging and leaving factory; step S1: preparing raw materials of the outer wall pipe, wherein the mixture ratio is as follows: 33-48% of polyethylene resin, 32-45% of acrylic resin, 3-4% of recycled materials, 7-8% of fixed fillers, 3-4% of stearic acid, 4-6% of drying agents, 3-5% of dark green color master batches and 4-7% of talcum powder; preparing inner wall tube raw materials: 33-47% of polyethylene, 36-46% of acrylic resin, 3-4% of recycled materials, 7-8% of fixed fillers, 3-4% of stearic acid, 4-6% of drying agents, 3-5% of dark green color master batches and 4-7% of talcum powder; step S2: respectively mixing the outer wall pipe raw material and the inner wall pipe raw material, and putting the raw material prepared in the step S1 into a double mixer for mixing, wherein the raw material is divided into an inner material and an outer material; step S3: forcibly feeding materials into the feeding machines regularly and quantitatively by a vacuum feeding machine, wherein the rotating speed of the feeding machines is set to be 24-30 r/min, the two feeding machines are used for continuously feeding materials, and the set weight is 270-280 kg/h; step 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 28-33 r/min, the inner wall pipe is 19-23 r/min, the melt mixed material is extruded through an extrusion die at the temperature of 200 plus materials and 210 ℃ and under the melt pressure of 19MPa, 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; step S5: controlling and shaping traction on the extruded and molded tube blank on a forming machine in a segmented mode, simultaneously carrying out a flaring molding process, wherein the flaring starting length is 90-110mm, the flaring ending length is 340-360mm, the forming machine is provided with at least eight segments of molding processes, the molding speed is set between 500-6000mm, the speed range is 95-100m/s, and cooling and shaping are carried out on the molded pipeline through a cooling machine; step S6: cutting the formed corrugated pipe material by a cutting machine, and stacking the cut corrugated pipe material after the cutting is finished; step S7: randomly picking a certain number of MPVE corrugated pipes from the produced corrugated pipes, and detecting the high-impact resistance characteristic of the MPVE corrugated pipes through detection equipment; step S8: packaging the finished product and leaving the factory after the corrugated pipe is detected to be qualified; high resistant MPVE bellows's of anti characteristic of impact check out test set, including support frame 1 and operation panel 2, operation panel 2 is installed on support frame 1, has installed spacing fixed establishment on operation panel 2, has installed adjustable impact testing mechanism on operation panel 2, and is located spacing fixed establishment one side, has installed supplementary protection machanism on the 2 lateral walls of operation panel, and spacing fixed establishment includes: the cushion block 3 and a pair of limiting and fixing structures with the same structure; the operating platform 2 is provided with a rectangular groove, the cushion block 3 is embedded in the rectangular groove, and the pair of limiting and fixing structures are respectively arranged at the two ends of the cushion block 3; impact testing mechanism includes with adjustable: a suspension 4, a lifting adjusting structure, a drop hammer control structure and a hammer head 5; the suspension 4 is arranged on the operating platform 2 and is positioned on one side of the cushion block 3, the lifting adjusting structure is arranged on the side wall of the suspension 4, the drop hammer control structure is arranged on the lifting adjusting structure, and the hammer head 5 is clamped on the drop hammer control structure; the auxiliary protection mechanism comprises: two pairs of protection plates 6 with the same structure and protection plate control structures; two pairs of protection plates 6 with the same structure are respectively arranged on the side wall of an operation table 2, the two pairs of protection plates 6 are mutually connected, are in a rectangular sleeve-shaped structure and are movably connected with the side wall of the operation table 2, a control structure of the protection plates 6 is arranged on a support frame 1 and is connected with the protection plates, the preparation method and the detection equipment of the MPVE corrugated pipe with the high impact resistance characteristic produce the MPVE corrugated pipe with the high impact resistance characteristic by adjusting the proportion of polyethylene resin and acrylic resin, and carry out the detection of the high impact resistance characteristic on the produced pipe, when in detection, the sample pipe is placed on the operation table, and is matched with a limit fixing mechanism on the operation table to carry out auxiliary fixation on the sample pipe, thereby reducing the influence on the test result caused by the shaking deviation of the pipe in the impact test process, and through an adjustable impact test mechanism arranged on the operation table, the pipe is subjected to impact test, test results are collected and processed, the structure is simple, meanwhile, in the test process, an auxiliary protection mechanism is matched to protect a test space, the defects that although the existing polyethylene corrugated pipe is good in toughness, insufficient in rigidity and fast in oxidation are overcome, the polyvinyl chloride corrugated pipe is good in rigidity and poor in toughness, the defects of the pipe are overcome due to the appearance of the MPVE double-wall corrugated pipe, the main application field is the double-wall corrugated pipe for rain and sewage in the municipal field, and the protective sleeve, industrial drainage and sewage pipe in the communication field can also be used, but in the prior art, the detection on the high impact resistance characteristic of the MPVE corrugated pipe is simple, the drop hammer impact test mode is mostly adopted, special equipment is not used for detecting the high impact resistance characteristic of the MPVE corrugated pipe, and fragments are easy to splash in the detection process, has certain potential safety hazard.
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): MPVE corrugated tubing was produced according to the following method and operating steps:
step S1, preparing raw materials of the outer wall pipe, wherein the raw materials comprise the following components in percentage by weight: 36% of polyethylene resin, 37% of acrylic resin, 4% of recycled materials, 7% of fixed fillers, 3% of stearic acid, 4% of drying agents, 5% of dark green color master batch and 4% of talcum powder; preparing inner wall tube raw materials: 35% of polyethylene, 38% of acrylic resin, 4% of a recycle material, 7% of a fixed filler, 3% of stearic acid, 4% of a drying agent, 5% of dark green color master batch and 4% of talcum powder; step S3, dosing; step S4, extrusion molding; step S5, cooling and shaping; step S6, cutting the pipe; step S7, impact detection; step S8, packaging and leaving factory;
step S2, blending materials: respectively mixing the outer wall pipe raw material and the inner wall pipe raw material, and putting the raw material prepared in the step S1 into a double mixer for mixing, wherein the raw material is divided into an inner material and an outer material;
step S3, dosing: forcibly feeding materials into the feeding machines regularly and quantitatively by a vacuum feeding machine, wherein the rotating speed of the feeding machines is set to be 27 r/min, the two feeding machines are used for continuous feeding, and the set weight is 270 kg/h;
step S4, extrusion molding: 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 31 r/min, the inner wall pipe is 21 r/min, the melt mixed material is extruded through an extrusion die at the temperature of 200-plus-210 ℃ and the melt pressure of 19MPa, 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;
step S5, cooling and shaping: controlling and shaping traction on the extruded and molded tube blank on a forming machine in a segmented mode, simultaneously carrying out a flaring molding process, wherein the flaring starting length is 90-110mm, the flaring ending length is 340-360mm, the forming machine is provided with at least eight segments of molding processes, the molding speed is set between 500-6000mm, the speed range is 95-100m/s, and cooling and shaping are carried out on the molded pipeline through a cooling machine;
step S6, cutting the pipe: cutting the formed corrugated pipe material by a cutting machine, and stacking the cut corrugated pipe material after the cutting is finished;
step S7, impact detection: selecting 8 MPVE corrugated pipes with the length of 1m from the produced corrugated pipes, placing the selected corrugated pipes into detection equipment, and detecting the high-impact resistance characteristic;
step S8, packaging and leaving factory: and packaging the finished product and leaving the factory after the corrugated pipe is detected to be qualified.
As can be seen from the description and the accompanying fig. 1-10, the detecting apparatus in step S7 includes a supporting frame 1 and an operating platform 2, the operating platform 2 is installed on the supporting frame 1, a limiting fixing mechanism is installed on the operating platform 2, an adjustable impact testing mechanism is installed on the operating platform 2 and located on one side of the limiting fixing mechanism, an auxiliary protection mechanism is installed on a side wall of the operating platform 2, and the limiting fixing mechanism includes: cushion 3 and the same spacing fixed knot of a pair of structure construct, its position relation and relation of connection are as follows, have seted up the rectangular channel on the operation panel 2, and cushion 3 inlays the dress in the rectangular channel, and a pair of spacing fixed knot construct is installed respectively on 3 both ends positions of cushion, and the impact testing mechanism with adjustable the aforesaid includes: suspension 4, lift adjustment structure, drop hammer control structure and tup 5, its positional relationship and relation of connection as follows, suspension 4 install on operation panel 2, and be located 3 one sides of cushion, lift adjustment structure installs on 4 lateral walls of suspension, drop hammer control structure installs on lift adjustment structure, 5 joints of tup are in the structural on the control of dropping hammer, above-mentioned supplementary protection machanism includes: two pairs of protection plates 6 with the same structure and a protection plate control structure, the position relation and the connection relation are as follows, the two pairs of protection plates 6 with the same structure are respectively arranged on the side wall of the operation platform 2, the two pairs of protection plates 6 are mutually connected and are in a rectangular sleeve-shaped structure and are movably connected with the side wall of the operation platform 2, the protection plate 6 control structure is arranged on the support frame 1 and is connected with the protection plate, when in use, the sample pipe is placed on the operation table 2, and is matched with the limit fixing mechanism on the operation table 2 to perform auxiliary fixing on the sample pipe, further reducing the influence of the shaking deviation of the pipe on the test result in the impact test process, and through the adjustable impact test mechanism arranged on the operating platform 2, the pipe is subjected to impact test, test results are collected and processed, the structure is simple, and meanwhile, in the test process, an auxiliary protection mechanism is matched to protect a test space;
as can be seen from fig. 1 to 7 in the specification, in the specific implementation process, the limiting fixing structure includes: the pipe material testing device comprises a fixed groove 7, a pair of arc plates 8 with the same structure, a connecting block 9, a spring 10 and a pair of rubber strips 11 with the same structure, wherein the fixed groove 7 is arranged on one side of a cushion block 3, the pair of arc plates 8 are respectively connected with the side wall of the fixed groove 7 through pin shafts, the connecting block 9 is arranged above the fixed groove 7, two side wall surfaces of the connecting block 9 are respectively hinged with one ends of the pair of arc plates 8, the spring 10 is arranged in the fixed groove 7, one end of the spring 10 is connected with the lower side wall surface of the fixed groove 7, the other end of the spring is connected with the lower end surface of the connecting block 9, when the pipe material testing device is used, the pipe material is placed in the pair of arc plates 8, and under the action of gravity, the pipe material applies pressure to the connecting block 9 in the pair of arc plates 8, so that the connecting block 9 moves towards the fixed groove 7 of the lower part and compresses the spring 10 below the pipe material, and further drives the arc plates 8 on two ends of the connecting block 9, rotating along the rotating pin position on the fixed groove 7, clamping and limiting the pipe, and performing the next experiment;
as can be seen from fig. 1 to 8 of the specification, in the implementation process, the lifting adjusting structure includes: a first servo motor 12, a threaded rod 13, a pair of limit grooves 14 with the same structure, a moving block 15, a threaded sleeve 16 and a scale 17, wherein the position relation and the connection relation are as follows, the first servo motor 12 is arranged on the operation platform 2 along the vertical direction and is positioned in the suspension 4, the threaded rod 13 is arranged in the suspension 4, two ends of the threaded rod 13 are respectively movably connected with the suspension 4 and are connected with the driving end of the first servo motor 12, the pair of limit grooves 14 are respectively arranged in the suspension 4 and are positioned at two sides of the threaded rod 13, two ends of the moving block 15 are sleeved in the pair of limit grooves 14, a first through hole is arranged at the central position of the moving block 15, the threaded sleeve 16 is embedded in the first through hole and is spirally sleeved on the threaded rod 13, the scale 17 is arranged on the side wall of the suspension 4, when in use, a power switch is turned on, the first servo motor 12 in the suspension 4 is started, the driving end of the first servo motor 12 is controlled to rotate, the threaded rod 13 on the driving end of the first servo motor 12 is driven to rotate, the threaded rod 13 rotates to drive the moving block 15 sleeved on the threaded rod to be capable of adjusting the position in the vertical direction along the limiting groove 14 under the limiting effect of the threaded sleeve 16, and then the height position of the hammer 5 is adjusted according to the scale on the scale 17; after the preparation work is finished, starting the guard plate control structure, lifting the guard plate 6, starting the drop hammer control structure to drop the hammer after the guard plate 6 is lifted in place, impacting the sample pipe, and recording a corresponding test result by a worker;
as can be seen from fig. 1 to 9 of the specification, in the implementation process, the drop hammer control structure includes: a fixed plate 18, a first electric push rod 19, a slide rail 20, a slide block 21, a special-shaped plate 22 and a pair of V-shaped rods 23 with the same structure, wherein the fixed plate 18 is arranged on the side wall of the moving block 15, one side of the fixed plate 18 is provided with a U-shaped groove, the first electric push rod 19 is arranged on the fixed plate 18 along the horizontal direction, the driving end of the first electric push rod is opposite to the U-shaped groove, the slide rail 20 is arranged on the fixed plate 18, the slide block 21 is sleeved on the slide rail 20 and is connected with the movable end of the first electric push rod 19, the special-shaped plate 22 is in a Y-shaped structure, one end of the special-shaped plate 22 is connected with the slide block 21, the pair of V-shaped rods 23 are respectively arranged on the fixed plate 18 and are respectively connected with the fixed plate 18 through pin shafts, one ends of the pair of V-shaped rods 23 are respectively provided with a long round hole, the other two ends of the special-shaped plate 22 are respectively sleeved in the long round holes on the V-shaped rods 23, the other ends of the pair of V-shaped rods 23 are respectively provided with a gasket, when the special-shaped plate hammer is used, the first electric push rod 19 can be started, the expansion of the movable end of the first electric push rod 19 is controlled, the movable end of the first electric push rod 19 is expanded, the sliding block 21 on the movable end of the first electric push rod 19 is driven to move towards the left side along the sliding rail 20, the sliding block 21 pushes the special-shaped plate 22 to move towards the left side, the left end of the special-shaped plate 22 slides in the long round holes at the ends of the pair of V-shaped plates, the left end of the pair of V-shaped rods 23 is pushed to move back to the left, the hammer head 5 loses control, falls freely and impacts a pipe.
As can be seen from fig. 1 to 10 of the specification, in the implementation process, the guard plate control structure includes: a pair of chutes 24 with the same structure, a pair of guide rails 25 with the same structure, a straight pin screw module 26 and a fixed block 27, wherein the chutes 24 are respectively arranged on the front side wall surface of the support frame 1, the guide rails 25 are respectively arranged on the two ends of the inner side wall surface of the protection plate 6 and are respectively sleeved in the chutes 24, the straight pin screw module 26 is arranged on the front side wall surface of the support frame 1, the fixed block 27 is arranged on the protection plate 6 and is connected with the movable end of the straight pin screw module 26, when in use, the straight pin screw module 26 on the support frame 1 is started to control the movable end of the straight pin screw module 26 to move upwards, the fixed block 27 on the movable end of the straight pin screw module 26 is driven to move upwards, the protection plate 6 is pushed to move upwards under the limiting action of the chutes 24 and the guide rails 25, and the whole testing environment is protected, and finishing the work.
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 (3)
1. The detection equipment for the MPVE corrugated pipe with the high impact resistance characteristic comprises a support frame (1) and an operation table (2), and is characterized in that the operation table (2) is arranged on the support frame (1), a limiting and fixing mechanism is arranged on the operation table (2), an adjustable impact testing mechanism is arranged on the operation table (2) and is positioned on one side of the limiting and fixing mechanism, and an auxiliary protection mechanism is arranged on the side wall of the operation table (2);
spacing fixed establishment includes: the cushion block (3) and a pair of limiting and fixing structures with the same structure;
a rectangular groove is formed in the operating platform (2), the cushion block (3) is embedded in the rectangular groove, and the pair of limiting fixing structures are respectively arranged at the two ends of the cushion block (3);
the adjustable impact testing mechanism comprises: the device comprises a suspension (4), a lifting adjusting structure, a drop hammer control structure and a hammer head (5);
the lift adjustment structure includes: a moving block (15);
the suspension (4) is arranged on the operating platform (2) and located on one side of the cushion block (3), the lifting adjusting structure is arranged on the side wall of the suspension (4), the drop hammer control structure is arranged on the lifting adjusting structure, and the hammer head (5) is clamped on the drop hammer control structure;
the auxiliary guard mechanism includes: two pairs of protection plates (6) with the same structure and protection plate control structures;
the two pairs of protection plates (6) with the same structure are respectively arranged on the side wall of the operating platform (2), the two pairs of protection plates (6) are mutually connected, are in a rectangular sleeve-shaped structure and are movably connected with the side wall of the operating platform (2), and the control structures of the protection plates (6) are arranged on the support frame (1) and are connected with the protection plates;
spacing fixed knot constructs includes: the fixing device comprises a fixing groove (7), a pair of arc-shaped plates (8) with the same structure, a connecting block (9), a spring (10) and a pair of rubber strips (11) with the same structure;
fixed slot (7) install in cushion (3) one side, it is a pair of arc (8) respectively with fixed slot (7) lateral wall adopts the round pin hub connection, connecting block (9) install in fixed slot (7) top, and both sides wall respectively with a pair of arc (8) one end is articulated each other, spring (10) install in fixed slot (7), and one end with fixed slot (7) downside wall is connected, and the other end with the terminal surface is connected under connecting block (9), the hammer control structure that falls includes: the device comprises a fixed plate (18), a first electric push rod (19), a slide rail (20), a slide block (21), a special-shaped plate (22) and a pair of V-shaped rods (23) with the same structure;
the fixed plate (18) is arranged on the side wall of the moving block (15), a U-shaped groove is formed in one side of the fixed plate (18), the first electric push rod (19) is arranged on the fixed plate (18) along the horizontal direction, the driving end of the first electric push rod is opposite to the U-shaped groove, the sliding rail (20) is arranged on the fixed plate (18), the sliding block (21) is sleeved on the sliding rail (20) and is connected with the movable end of the first electric push rod (19), the special-shaped plate (22) is of a Y-shaped structure, one end of the special-shaped plate (22) is connected with the sliding block (21), the pair of V-shaped rods (23) are respectively arranged on the fixed plate (18) and are respectively connected with the fixed plate (18) through a pin shaft, one ends of the pair of V-shaped rods (23) are respectively provided with a long round hole, and the other two ends of the special-shaped plate (22) are respectively sleeved in the long round holes in the V-shaped rods (23), and a gasket is arranged at the other end of each pair of V-shaped rods (23).
2. The apparatus for testing MPVE corrugated tubing with high impact resistance characteristics as claimed in claim 1, wherein said elevation adjustment structure further comprises: the device comprises a first servo motor (12), a threaded rod (13), a pair of limit grooves (14) with the same structure, a threaded sleeve (16) and a scale (17);
the first servo motor (12) is arranged on the operating platform (2) in the vertical direction and located in the suspension (4), the threaded rod (13) is arranged in the suspension (4), two ends of the threaded rod are respectively movably connected with the suspension (4) and connected with a driving end of the first servo motor (12), the pair of limiting grooves (14) are respectively arranged in the suspension (4) and located on two sides of the threaded rod (13), two ends of the moving block (15) are sleeved in the pair of limiting grooves (14), a first through hole is formed in the center of the moving block (15), the threaded sleeve (16) is embedded in the first through hole and spirally sleeved on the threaded rod (13), and the scale (17) is arranged on the side wall of the suspension (4).
3. The apparatus for testing an MPVE bellows of high impact resistance characteristics as claimed in claim 1, wherein said fender control structure comprises: a pair of chutes (24) with the same structure, a pair of guide rails (25) with the same structure, a straight pin screw rod module (26) and a fixed block (27);
the pair of sliding grooves (24) are respectively arranged on the front side wall surface of the support frame (1), the pair of guide rails (25) are respectively arranged on two ends of the inner side wall surface of the protection plate (6) and are respectively sleeved in the pair of sliding grooves (24), the straight pin screw rod module (26) is arranged on the front side wall surface of the support frame (1), and the fixing block (27) is arranged on the protection plate (6) and is connected with the movable end of the straight pin screw rod module (26).
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| CN201910948960.3A CN110861333B (en) | 2019-10-08 | 2019-10-08 | Preparation method and detection equipment of MPVE corrugated pipe with high impact resistance characteristic |
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| CN110861333A (en) | 2020-03-06 |
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Application publication date: 20200306 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 high impact resistance and resistance characteristics 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 high impact resistance and resistance characteristics Granted publication date: 20210914 Pledgee: Jiangxi Ruichang Rural Commercial Bank Co.,Ltd. Saihu Branch Pledgor: JIANGXI DEYIKANG PIPE INDUSTRY CO.,LTD. Registration number: Y2024980009004 |