Testing equipment for MPVE bellows with high extrusion resistance

Abstract

The invention discloses a method for preparing an MPVE corrugated pipe with high extrusion resistance, comprising the following operating steps: step S1, raw material preparation; step S2, raw material mixing; step S3, quantitative feeding; step S4, extrusion molding; step S5, cooling and shaping; step S6, pipe cutting; step S7, extrusion detection; step S8, packaging and shipment. The invention produces MPVE corrugated pipes by adjusting the proportion of grafted polyethylene resin and polyvinyl chloride resin, and detects the high extrusion resistance of the produced pipes. During the detection, an auxiliary feeding mechanism is used to automatically feed sample pipes, and the sample pipes can be automatically fed to an operating table, and an extrusion test mechanism on the operating table is used to perform an extrusion test on the pipes, and the test results are collected and processed. The invention has a simple structure and a high degree of automation.

Description

Technical Field

[0001] The invention relates to the technical field of MPVE corrugated pipes, and in particular to a preparation method and a detection device for an MPVE corrugated pipe with high extrusion resistance. Background Art

[0002] At present, there are many kinds of large-diameter pipes used for underground drainage and sewage disposal, and each has its own defects. For example, PVC-U double-wall corrugated pipes have poor low-temperature brittleness and the product diameter is limited to 600mm; PE double-wall corrugated pipes have low rigidity and are easy to deform, requiring a large amount of backfill work, which can easily cause road collapse; concrete pipes have a short service life, are prone to corrosion and leakage, and require a large amount of installation and transportation work; steel pipes are expensive and easy to corrode, requiring a large amount of installation and transportation work. In view of this, in-depth research was conducted on the above-mentioned issues, which led to the creation of this case. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems. A preparation method and detection equipment of an MPVE corrugated pipe with high extrusion resistance are designed to solve the problems of existing large-diameter sewage pipes such as poor low-temperature brittleness, low rigidity, easy deformation, large backfill volume, and easy road collapse. The detection equipment can be used to quantitatively detect the high extrusion resistance of the MPVE corrugated pipe, thereby judging the toughness and strength of the MPVE corrugated pipe.

[0004] The technical solution of the present invention to achieve the above-mentioned purpose is: a method for preparing an MPVE corrugated pipe with high extrusion resistance, comprising the following steps: step S1, raw material preparation; step S2, raw material mixing; step S3, quantitative feeding; step S4, extrusion molding; step S5, cooling and shaping; step S6, pipe cutting; step S7, extrusion detection; step S8, packaging and delivery;

[0005] Step S1: preparing raw materials for the outer wall tube: grafted polyethylene resin 35%-45%, polyvinyl chloride resin 40%-50%, recycled material 3%-4%, fixed filler 6%-8%, stearic acid 3%-4%, desiccant 3%-6%, dark green masterbatch 3%-5%, talc 5%-7%; preparing raw materials for the inner wall tube: grafted polyethylene resin 33%-47%, polyvinyl chloride resin 35%-45%, recycled material 3%-4%, fixed filler 6%-8%, stearic acid 3%-4%, desiccant 3%-6%, dark green masterbatch 3%-5%, talc 5%-7%;

[0006] Step S2: Mix the outer wall tube raw material and the inner wall tube raw material respectively, and put the raw materials prepared in step S1 into a double mixer for mixing, which is divided into two types: inner and outer;

[0007] Step S3: Feed the material into the feeder regularly and quantitatively through the vacuum feeder. The speed of the feeder is set to 24-28 rpm. The two feeders are used for continuous feeding, and the set weight is 260kg / h-280kg / h.

[0008] Step S4: putting the mixed materials into a double-cone twin-screw extruder, with a speed control range of 29-32 rpm for the outer wall tube and 18-22 rpm for the inner wall tube, and molten mixed materials are extruded through an extrusion die at 200-210°C and a melt pressure of 19 MPa. The extrusion die is divided into an inner die and an outer die. The inner and outer dies are provided with adjusting screws to adjust the wall thickness according to demand;

[0009] Step S5: the tube blank after extrusion molding is pulled by segmented control on the molding machine, and the expansion molding process is performed at the same time. The expansion starting length is 90-110mm, and the expansion ending length is 340-360mm. The molding machine is provided with at least eight molding processes, and the molding speed is set between 500-6000mm, and the speed range is 95-100m / s. The formed pipe is cooled and shaped by a cooling machine;

[0010] Step S6: cutting the formed corrugated pipe material by a cutting machine, and stacking it after cutting;

[0011] Step S7: randomly selecting a certain number of the produced corrugated pipes and testing their high extrusion resistance characteristics through a testing device;

[0012] Step S8: After the bellows are tested and qualified, the finished product is packaged and shipped out;

[0013] The raw materials for the outer wall pipe are selected, among which grafted polyethylene resin accounts for 37%, polyvinyl chloride resin accounts for 40%, recycled material accounts for 3%, fixed filler accounts for 6%, stearic acid accounts for 3%, desiccant accounts for 3%, dark green masterbatch accounts for 3% and talc accounts for 5%; the raw materials for the outer wall pipe are selected, among which grafted polyethylene resin accounts for 35%, polyvinyl chloride resin accounts for 42%, recycled material accounts for 3%, fixed filler accounts for 6%, stearic acid accounts for 3%, desiccant accounts for 3%, dark green masterbatch accounts for 3% and talc accounts for 5%.

[0014] In step S3, the rotation speed of the feeder is set to 25 rpm, and the two feeders are continuously fed, and the set weight is 260 kg / h.

[0015] In step S4, the mixed materials are placed into a double-cone twin-screw extruder, and the rotation speed is controlled to be 30 rpm for the outer wall tube and 20 rpm for the inner wall tube.

[0016] In step S5, the starting length of the expansion is 90 mm, and the ending length of the expansion is 340 mm.

[0017] A detection device for an MPVE corrugated pipe with high extrusion resistance, comprising a support frame and an operating table, wherein the operating table is mounted on the support frame, an auxiliary feeding mechanism is mounted on one side of the operating table, an auxiliary fixing mechanism is mounted on the operating table, and a pressure testing mechanism is mounted above the auxiliary fixing mechanism;

[0018] The auxiliary feeding mechanism includes: a conveyor belt, a grabbing control structure and a pushing feeding structure;

[0019] The conveyor belt is installed on one side of the operating table, the grabbing control structure is installed on one end of the conveyor belt, and the pushing feeding structure is installed on one end of the conveyor belt and connected to the grabbing control structure;

[0020] The pushing feeding structure comprises a pair of pushing parts with the same structure, the pair of pushing parts are respectively installed on the two side walls of the operating table, and the pushing parts comprise: a fixing frame, a first hydraulic cylinder and a connecting block;

[0021] The fixing frame is installed on the side wall of the conveyor belt, the first hydraulic cylinder is installed in the fixing frame in the horizontal direction, and the movable end extends out of the fixing frame, and the connecting block is embedded on the movable end of the first hydraulic cylinder;

[0022] The grabbing control structure comprises a pair of grabbing parts with the same structure, the pair of grabbing parts are respectively mounted on the pair of pushing parts and connected to the connecting block; the grabbing part comprises: an auxiliary frame, a first electric push rod and a pneumatic clamp;

[0023] The auxiliary frame is mounted on the connecting block, the first electric push rod is mounted on the auxiliary frame in a horizontal direction, and the pneumatic clamp is embedded on the movable end of the first electric push rod.

[0024] The auxiliary fixing mechanism comprises: a flip clamping structure and an auxiliary unloading structure;

[0025] The flip clamping structure comprises a pair of flip limiter components with the same structure, which are respectively installed on the operating table and their positions correspond to each other; a pair of rectangular grooves with the same structure are opened on the operating table and their positions correspond to each other; the flip limiter components are embedded in the rectangular grooves;

[0026] The flip limit assembly includes: a first servo motor, a rotating wheel and an arc-shaped buckle plate;

[0027] The first servo motor is installed in the rectangular groove, the rotating wheel is embedded on the driving end of the first servo motor, and one end of the arc-shaped buckle plate is embedded on the rotating wheel and located in the rectangular groove;

[0028] The auxiliary unloading structure includes a pair of push unloading parts with the same structure, a pair of square through holes with the same structure are opened on the lower end surface of the operating table, and the pair of push unloading parts are respectively embedded in the pair of square through holes; the push unloading part includes: a suspension, a second electric push rod, a second hydraulic cylinder and a push plate;

[0029] The suspension is embedded in the square through hole, and the upper end is fixedly connected to the operating table, the second electric push rod is installed in the suspension along the vertical direction, the second hydraulic cylinder is installed on the movable end of the second electric push rod along the horizontal direction, and the push plate is embedded on the movable end of the second hydraulic cylinder.

[0030] The pressure testing mechanism comprises: a portal frame, a movable plate, a pressure plate, a power control structure and a data measurement structure;

[0031] The portal frame is installed on the operating table, the movable plate is installed on the portal frame and is movably connected to the inner walls on both sides of the portal frame, the pressing plate is installed in the portal frame and is located below the movable plate, the power control structure is installed on both ends of the portal frame and is respectively connected to the movable plate and the pressing plate, and the data measurement structure is installed on the pressing plate;

[0032] The power control structure includes: a pair of limit sliding parts and a lifting control part with the same structure; the pair of limit sliding parts are respectively installed on the inner wall surface of the door frame and connected to the moving plate, and the lifting control part is installed on the lower side of the operating table, penetrates the operating table, and is connected to the moving plate and the pressure plate;

[0033] The position-limiting sliding part comprises a slide groove and a sliding block. The slide groove is embedded on the inner wall surface of the door frame. The sliding block is sleeved in the slide groove and connected to the moving plate.

[0034] The lifting control unit includes: a second servo motor, a bracket, a rotating shaft, a pair of first bevel gears with the same structure, and a pair of threaded rotating components with the same structure;

[0035] The second servo motor is installed on the lower side wall of the operating table, the bracket is installed on the lower side wall of the operating table and is located on one side of the second servo motor, the rotating shaft is sleeved in the bracket, a pair of the first bevel gears are respectively embedded on both ends of the rotating shaft, and a pair of the threaded rotating components respectively penetrate the operating table, the pressure plate and the moving plate, and are respectively movably connected with the pair of the first bevel gears;

[0036] The threaded rotating assembly comprises: a rotating shaft, a second bevel gear, a first threaded sleeve, a telescopic rod and a threaded rod;

[0037] The rotating shaft passes through the operating table, the second bevel gear is embedded in the lower end of the rotating shaft and meshes with the first bevel gear, the first threaded sleeve is embedded in the movable plate, one end of the telescopic rod is arranged on the lower side wall of the movable plate, and the other end is connected to the pressing plate, the threaded rod spirally passes through the first threaded sleeve, the lower end of the threaded rod is connected to the rotating shaft, and the upper end of the threaded rod is movably connected to the lower side wall of the portal frame.

[0038] The data measurement structure includes: a pressure measuring part and a height measuring part; the pressure measuring part is installed on the pressing plate and connected to the lower side wall of the moving plate, and the height measuring part is installed on the side wall of the pressing plate;

[0039] The pressure measuring unit includes: a pressure sensor, a signal collecting module and a signal transmitting module;

[0040] The pressure sensor is mounted on the pressing plate and in contact with the lower wall of the moving plate, the signal collecting module is mounted on the pressing plate and connected to the pressure sensor, and the signal transmitting module is mounted on one side of the signal collecting module and connected to the signal collecting module;

[0041] The height measuring part comprises: a limiting frame, a limiting roller and a measuring ruler;

[0042] The limit frame is installed on the side wall of the pressure plate, the limit roller is embedded in the limit frame, and both ends are movably connected to the limit frame respectively, and the measuring ruler is inserted in the limit frame and fits with the limit roller.

[0043] The preparation method and detection equipment of the MPVE corrugated pipe with high extrusion resistance characteristics made by the technical solution of the present invention, the preparation method and detection equipment of the MPVE corrugated pipe with high extrusion resistance characteristics, produce the MPVE corrugated pipe by adjusting the proportion of grafted polyethylene resin and polyvinyl chloride resin, and detect the high extrusion resistance characteristics of the produced pipes. During the detection, the auxiliary feeding mechanism is used to automatically feed the sample pipe, and the sample pipe can be automatically fed to the operating table, and the auxiliary fixing mechanism on the operating table is used to assist in fixing the pipe to be tested. , thereby reducing the shaking and deviation of the pipe during the extrusion test and affecting the test results, and through the pressure testing mechanism on the operating table, the pipe is extruded and tested, and the test results are collected and processed. It has a simple structure and a high degree of automation, and the MPVE corrugated pipe produced has good toughness and high strength, which solves the problems of existing large-diameter sewage pipes such as poor low-temperature brittleness, low rigidity, easy deformation, large backfilling volume, and easy road collapse. In addition, the detection equipment can be used to quantitatively detect the high extrusion resistance characteristics of the MPVE corrugated pipe, thereby judging the toughness and strength of the MPVE corrugated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the main structure of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device according to the present invention.

[0045] Figure 2 This is a schematic diagram of the main cross-sectional structure of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device according to the present invention.

[0046] Figure 3 This is a side structural schematic diagram of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device according to the present invention.

[0047] Figure 4 It is a schematic diagram of the side cross-sectional structure of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device according to the present invention.

[0048] Figure 5 This is a schematic diagram of the top view of the structure of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device according to the present invention.

[0049] Figure 6 This is a schematic diagram of the partially enlarged structure of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device according to the present invention.

[0050] Figure 7 This is a schematic diagram of the a-position enlarged structure of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device described in the present invention.

[0051] Figure 8 This is a schematic diagram of the amplified structure of the b position of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device according to the present invention.

[0052] Fig. 9 This is a schematic diagram of the c-position enlarged structure of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a detection device according to the present invention.

[0053] Fig.10 This is a schematic diagram of the structure of a method for preparing an MPVE corrugated pipe with high extrusion resistance and a pressure testing mechanism of a testing device under a downward pressure state as described in the present invention.

[0054] In the figure: 1-support frame; 2-operating table; 3-conveyor belt; 4-fixed frame; 5-first hydraulic cylinder; 6-connecting block; 7-auxiliary frame; 8-first electric push rod; 9-pneumatic clamp; 10-first servo motor; 11-rotating wheel; 12-arc buckle plate; 13-suspension; 14-second electric push rod; 15-second hydraulic cylinder; 16-push plate; 17-gantry frame; 18-moving plate; 19-pressing plate; 20-second servo motor; 21-bracket; 22-rotating shaft; 23-first bevel gear; 24-rotating shaft; 25-second bevel gear; 26-first threaded sleeve; 27-second threaded sleeve; 28-threaded rod; 29-pressure sensor; 30-signal collection module; 31-signal transmission module; 32-limiting frame; 33-limiting roller; 34-measuring ruler. DETAILED DESCRIPTION

[0055] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-10As shown, a method for preparing an MPVE corrugated pipe with high extrusion resistance comprises the following steps: step S1, raw material preparation; step S2, raw material mixing; step S3, quantitative feeding; step S4, extrusion molding; step S5, cooling and shaping; step S6, pipe cutting; step S7, extrusion detection; step S8, packaging and delivery; step S1: preparing raw materials for the outer wall pipe: grafted polyethylene resin 35%-45%, polyvinyl chloride resin 40%-50%, recycled material 3%-4%, fixed filler 6%-8%, stearic acid 3%-4%, desiccant 3%-6%, dark green masterbatch 3%-5%, talcum powder 5%-7%; preparing raw materials for the inner wall pipe: grafted polyethylene resin 3 3%-47%, polyvinyl chloride resin 35%-45%, recycled material 3%-4%, fixed filler 6%-8%, stearic acid 3%-4%, desiccant 3%-6%, dark green masterbatch 3%-5%, talcum powder 5%-7%; Step S2: Mix the outer wall tube raw materials and the inner wall tube raw materials respectively, put the raw materials prepared in step S1 into the double mixer for mixing, which is divided into internal and external two types; Step S3: Through the vacuum feeder, force feed the feeder at a fixed time and quantity, the speed of the feeder is set to 24-28 rpm, the two feeders are continuous feeding, and the set weight is 260kg / h-280kg / h; Step S4: Mix the mixed materials Put it into a double-cone twin-screw extruder, and its speed control range is: 29-32 rpm for the outer wall tube and 18-22 rpm for the inner wall tube, and the molten mixture is extruded through an extrusion die at 200-210°C and a melt pressure of 19MPa. The extrusion die is divided into an inner die and an outer die. The inner and outer dies are provided with adjusting screws to adjust the wall thickness according to demand; Step S5: The tube blank after extrusion molding is segmented and controlled to be shaped and pulled on the molding machine, and the expansion molding process is performed at the same time. The expansion starting length is 90-110mm, and the expansion ending length is 340-360mm. The molding machine is provided with at least eight molding processes, and the molding speed is set at 500-6000mm. The speed range is 95-100m / s, and the formed pipe is cooled and shaped by a cooling machine; step S6: the formed corrugated pipe is cut by a cutting machine, and the corrugated pipe is stacked after cutting; step S7: a certain number of corrugated pipes are randomly selected from the produced corrugated pipes, and their high extrusion resistance characteristics are tested by testing equipment; step S8: after the corrugated pipe is tested and qualified, the finished product is packaged and shipped out, and the outer wall pipe raw materials are selected, of which grafted polyethylene resin accounts for 37%, polyvinyl chloride resin accounts for 40%, recycled materials account for 3%, fixed fillers account for 6%, stearic acid accounts for 3%, desiccant accounts for 3%, dark green masterbatch accounts for 3% and talcum powder accounts for 5%;The raw materials for the outer wall tube are selected, wherein the grafted polyethylene resin accounts for 35%, the polyvinyl chloride resin accounts for 42%, the recycled material accounts for 3%, the fixed filler accounts for 6%, the stearic acid accounts for 3%, the desiccant accounts for 3%, the dark green masterbatch accounts for 3% and the talcum powder accounts for 5%. The speed of the feeder in step S3 is set to 25 rpm, and the two feeders are continuously fed, and the set weight is 260 kg / h. In step S4, the mixed materials are put into a double-cone twin-screw extruder, and the speed is controlled to be 30 rpm for the outer wall tube and 20 rpm for the inner wall tube. In step S5, the starting length of the flaring is 90 mm, and the ending length of the flaring is 340 mm. An MPVE corrugated tube with high extrusion resistance The pipe detection equipment comprises a support frame 1 and an operating table 2, wherein the operating table 2 is mounted on the support frame 1, an auxiliary feeding mechanism is mounted on one side of the operating table 2, an auxiliary fixing mechanism is mounted on the operating table 2, and a pressure testing mechanism is mounted above the auxiliary fixing mechanism; the auxiliary feeding mechanism comprises: a conveyor belt 3, a grabbing control structure and a push feeding structure; the conveyor belt 3 is mounted on one side of the operating table 2, the grabbing control structure is mounted on one end of the conveyor belt 3, the push feeding structure is mounted on one end of the conveyor belt 3 and is connected to the grabbing control structure; the push feeding structure comprises a pair of push parts with the same structure, the pair of push parts are respectively mounted on the two side walls of the operating table 2, and the push feeding structure comprises a pair of push parts with the same structure, the push parts are respectively mounted on the two side walls of the operating table 2, and the push feeding structure comprises a pair of push parts with the same structure, and the push parts are respectively mounted on the two side walls of the operating table 2. The pushing part includes: a fixed frame 4, a first hydraulic cylinder 5 and a connecting block 6; the fixed frame 4 is installed on the side wall of the conveyor belt 3, the first hydraulic cylinder 5 is installed in the fixed frame 4 along the horizontal direction, and the movable end extends out of the fixed frame 4, and the connecting block 6 is embedded in the movable end of the first hydraulic cylinder 5; the grabbing control structure includes a pair of grabbing parts with the same structure, a pair of the grabbing parts are respectively installed on a pair of the pushing parts, and are connected to the connecting block 6; the grabbing part includes: an auxiliary frame 7, a first electric push rod 8 and a pneumatic clamp 9; the auxiliary frame 7 is installed on the connecting block 6, the first electric push rod 8 is installed on the auxiliary frame 7 along the horizontal direction, and the pneumatic clamp 9 is embedded in the first electric push On the movable end of the rod 8, the auxiliary fixing mechanism includes: a flip clamping structure and an auxiliary unloading structure; the flip clamping structure includes a pair of flip limit assemblies with the same structure, and the pair of flip limit assemblies are respectively installed on the operating table 2, and the positions correspond to each other; a pair of rectangular grooves with the same structure are opened on the operating table 2, and the positions correspond to each other; the flip limit assembly is embedded in the rectangular groove; the flip limit assembly includes: a first servo motor 10, a rotating wheel 11 and an arc-shaped gusset plate 12; the first servo motor 10 is installed in the rectangular groove, the rotating wheel 11 is embedded on the driving end of the first servo motor 10, and one end of the arc-shaped gusset plate 12 is embedded on the rotating wheel 11 and is located in the rectangular groove;The auxiliary unloading structure includes a pair of push unloading parts with the same structure, a pair of square through holes with the same structure are opened on the lower end surface of the operating table 2, and the pair of push unloading parts are respectively embedded in the pair of square through holes; the push unloading part includes: a suspension 13, a second electric push rod 14, a second hydraulic cylinder 15 and a push plate 16; the suspension 13 is embedded in the square through holes, and the upper end is fixedly connected to the operating table 2, the second electric push rod 14 is installed in the suspension 13 along the vertical direction, the second hydraulic cylinder 15 is installed on the movable end of the second electric push rod 14 along the horizontal direction, and the push plate 16 is embedded in the second electric push rod 14. Installed on the movable end of the second hydraulic cylinder 15, the pressure testing mechanism includes: a portal frame 17, a movable plate 18, a pressure plate 19, a power control structure and a data measurement structure; the portal frame 17 is installed on the operating table 2, the movable plate 18 is installed on the portal frame 17, and is movably connected to the inner walls of both sides of the portal frame 17, the pressure plate 19 is installed in the portal frame 17 and is located below the movable plate 18, the power control structure is installed on both ends of the portal frame 17, and is respectively connected to the movable plate 18 and the pressure plate 19, and the data measurement structure is installed on the pressure plate 19; the movable The force control structure includes: a pair of limit sliding parts and a lifting control part with the same structure; the pair of limit sliding parts are respectively installed on the inner wall surface of the door frame 17 and connected to the moving plate 18, and the lifting control part is installed on the lower side of the operating table 2, passes through the operating table 2, and is connected to the moving plate 18 and the pressure plate 19; the limit sliding part includes a slide groove and a slider, the slide groove is embedded on the inner wall surface of the door frame 17, the slider is set in the slide groove, and is connected to the moving plate 18, the lifting control part includes: a second servo motor 20, a bracket 21, a rotating shaft 22, a pair of structures The first bevel gear 23 with the same structure and a pair of threaded rotating components with the same structure; the second servo motor 20 is installed on the lower side wall of the operating table 2, the second servo motor 20 is installed on the lower side wall of the operating table 2, the bracket 21 is installed on the lower side wall of the operating table 2 and is located on one side of the second servo motor 20, the rotating shaft 22 is sleeved in the bracket 21, a pair of the first bevel gears 23 are respectively embedded on both ends of the rotating shaft 22, a pair of the threaded rotating components respectively penetrate the operating table 2, the pressing plate 19 and the moving plate 18, and are respectively movably connected with the pair of the first bevel gears 23;The threaded rotating assembly includes: a rotating shaft 24, a second bevel gear 25, a first threaded sleeve 26, a telescopic rod 27 and a threaded rod 28. The rotating shaft 24 passes through the operating table 2. The second bevel gear 25 is embedded on the lower end of the rotating shaft 24 and meshes with the first bevel gear 23. The first threaded sleeve 26 is embedded on the moving plate 18. One end of the telescopic rod 27 is installed on the lower side wall of the moving plate 18, and the other end is connected to the pressing plate 19. The threaded rod 28 spirally passes through the first threaded sleeve 26. The lower end of the threaded rod 28 is connected to the rotating shaft 24. The upper end of the threaded rod 28 is movably connected to the lower side wall of the portal frame 17. The data measurement structure includes: a pressure measuring part and a height measuring part; the pressure measuring part is installed on the pressing plate 19 and connected to the lower side wall of the moving plate 18. The height measuring part is installed on the side wall of the pressing plate 19; the pressure measuring part includes: a pressure sensor 29, a signal collecting module 30 and a signal transmitting module 31; the pressure sensor 29 is installed on the pressing plate 19 and contacts the lower wall of the moving plate 18, the signal collecting module 30 is installed on the pressing plate 19 and connected to the pressure sensor 29, the signal transmitting module 31 is installed on one side of the signal collecting module 30 and connected to the signal collecting module 30; the height measuring part includes: a limit frame 32, a limit roller 33 and a measuring ruler 34; the limit frame 32 is installed on the side wall of the pressing plate 19, the limit roller 33 is embedded in the limit frame 32, and the two ends are respectively movably connected to the limit frame 32, and the measuring ruler 34 is inserted in the limit frame 32 and fits with the limit roller 33. ;

[0056] The present embodiment is characterized in that it includes the following operation steps: step S1, raw material preparation; step S2, raw material mixing; step S3, quantitative feeding; step S4, extrusion molding; step S5, cooling and shaping; step S6, pipe cutting; step S7, extrusion detection; step S8, packaging and delivery; step S1: preparation of raw materials for outer wall tube: grafted polyethylene resin 35%-45%, polyvinyl chloride resin 40%-50%, recycled material 3%-4%, fixed filler 6%-8%, stearic acid 3%-4%, desiccant 3%-6%, dark green masterbatch 3%-5%, talc 5%-7%; preparation of raw materials for inner wall tube : grafted polyethylene resin 33%-47%, polyvinyl chloride resin 35%-45%, recycled material 3%-4%, fixed filler 6%-8%, stearic acid 3%-4%, desiccant 3%-6%, dark green masterbatch 3%-5%, talc 5%-7%; Step S2: respectively mix the raw materials of the outer wall tube and the raw materials of the inner wall tube, put the raw materials prepared in step S1 into the double mixer for mixing, which is divided into two types: inner and outer; Step S3: through the vacuum feeder, force feed the feeder at a fixed time and quantity, the speed of the feeder is set to 24-28 rpm, and the two feeders are continuous feeding, The set weight is 260kg / h-280kg / h; Step S4: Put the mixed materials into a double-cone twin-screw extruder, and the speed control range is: 29-32 rpm for the outer wall tube and 18-22 rpm for the inner wall tube, and the molten mixed materials are extruded through an extrusion die at 200-210°C and a melt pressure of 19MPa. The extrusion die is divided into an inner die and an outer die. The inner and outer dies are provided with adjusting screws to adjust the wall thickness according to the demand; Step S5: The tube blank after extrusion molding is segmented and controlled to be shaped and pulled on the molding machine, and the expansion molding process is carried out at the same time, and the expansion starts The length is 90-110mm, the expansion end length is 340-360mm, the forming machine is provided with at least eight forming processes, the forming speed is set between 500-6000mm, the speed range is 95-100m / s, and the formed pipe is cooled and shaped by a cooling machine; Step S6: the formed corrugated pipe is cut by a cutting machine, and the corrugated pipe is stacked after cutting; Step S7: a certain number of corrugated pipes are randomly selected from the produced corrugated pipes, and their high extrusion resistance characteristics are tested by the testing equipment; Step S8: after the corrugated pipe is tested and qualified, the finished product is packaged and shipped;The preparation method and testing equipment of the MPVE corrugated pipe with high extrusion resistance characteristics, by measuring the proportion of grafted polyethylene resin and polyvinyl chloride resin, produce the MPVE corrugated pipe, and test the high extrusion resistance characteristics of the produced pipes. During the test, the auxiliary feeding mechanism is used to automatically feed the sample pipes, and the sample pipes can be automatically fed to the operating table, and the auxiliary fixing mechanism on the operating table is used to assist in fixing the pipes to be tested, thereby reducing the shaking and deviation of the pipes during the extrusion test and affecting the test results. The pressure testing mechanism on the operating table is used to perform an extrusion test on the pipes, and the test results are collected and processed. The structure is simple, the degree of automation is high, and the MPVE corrugated pipes produced have good toughness and high strength, which solves the problems of poor low-temperature brittleness, low rigidity, easy deformation, large backfilling engineering, and easy road collapse of existing large-diameter sewage pipes. The high extrusion resistance characteristics of the MPVE corrugated pipe can be quantitatively tested by the testing equipment, so as to judge the toughness and strength of the MPVE corrugated pipe. ;

[0057] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0058] Embodiment: According to the following steps, an MPVE corrugated pipe with high extrusion resistance is produced, and the specific operation steps are as follows:

[0059] Step S1: preparing raw materials for the outer wall tube: grafted polyethylene resin 37%, polyvinyl chloride resin 40%, recycled material 3%-4%, fixed filler 6%-8%, stearic acid 3%-4%, desiccant 3%-6%, dark green masterbatch 3%-5%, talc 5%-7%; preparing raw materials for the inner wall tube: grafted polyethylene resin 35%, polyvinyl chloride resin 42%, recycled material 3%-4%, fixed filler 6%-8%, stearic acid 3%-4%, desiccant 3%-6%, dark green masterbatch 3%-5%, talc 5%-7%;

[0060] Step S2: Mix the outer wall tube raw material and the inner wall tube raw material respectively, and put the raw materials prepared in step S1 into a double mixer for mixing, which is divided into two types: inner and outer;

[0061] Step S3: Feed the material into the feeder regularly and quantitatively through the vacuum feeder. The speed of the feeder is set to 25 rpm. The two feeders are used for continuous feeding, and the set weight is 260 kg / h.

[0062] Step S4: putting the mixed materials into a double-cone twin-screw extruder, with a speed control range of 30 rpm for the outer wall tube and 20 rpm for the inner wall tube, and extruding the molten mixed materials through an extrusion die at 200°C and a melt pressure of 19 MPa. The extrusion die is divided into an inner die and an outer die. The inner and outer dies are provided with adjusting screws to adjust the wall thickness according to demand;

[0063] Step S5: the tube blank after extrusion molding is tracted in sections on the molding machine for shaping and traction, and the expansion molding process is performed at the same time. The expansion starting length is 90 mm, and the expansion ending length is 340 mm. The molding machine is provided with at least eight sections of molding processes, and the molding speed is set at 4500 mm / s and the speed is 95 m / s. The formed pipe is cooled and shaped by a cooling machine;

[0064] Step S6: cutting the formed corrugated pipe material by a cutting machine, and stacking it after cutting;

[0065] Step S7: Randomly select a certain number of corrugated tubes from the produced corrugated tubes, and test their high extrusion resistance characteristics through testing equipment.

[0066] Step S8: After the bellows are tested and found to be qualified, the finished product is packaged and shipped out.

[0067] Attached to the instruction manual Figure 1-10It can be seen that in the specific implementation process of the extrusion test in step S7, 8 1m long pipes are selected and placed on the conveyor belt 3 in the detection equipment of the MPVE corrugated pipe with high extrusion resistance, and the first electric push rod 8 on the auxiliary frame 7 is controlled to expand, and the pneumatic clamp 9 on the active end of the first electric push rod 8 is pushed to move toward the pipe to be tested, and the side wall of the pipe is grasped and fixed by the pneumatic clamp 9. After grasping, the active end of the first hydraulic cylinder 5 on the fixed frame 4 is controlled to expand, and the connecting block 6 is pushed to move toward the operating table 2, and the pipe is moved. Go to the operating table 2 on the support frame 1, control the auxiliary fixing mechanism on the operating table 2 to clamp the pipe, the auxiliary fixing mechanism includes: a flip clamping structure and an auxiliary unloading structure; the above-mentioned flip clamping structure includes a pair of flip limit components with the same structure, and the pair of flip limit components are respectively installed on the operating table 2, and the positions correspond to each other; a pair of rectangular grooves with the same structure are opened on the operating table 2, and the positions correspond to each other; the flip limit component is embedded in the rectangular groove, and the flip limit component includes: a first servo motor 10, a rotating wheel 11 and an arc-shaped buckle plate 12, and its position The relationship and connection relationship are as follows: the first servo motor 10 is installed in the rectangular groove, the rotating wheel 11 is embedded on the driving end of the first servo motor 10, and one end of the arc-shaped gusset plate 12 is embedded on the rotating wheel 11 and is located in the rectangular groove. When in use, the first servo motor 10 is started to control the driving end of the first servo motor 10 to rotate, drive the rotating wheel 11 on its driving end to rotate, and drive the arc-shaped gusset plate 12 on the rotating wheel 11 to turn up, clamp and fix the pipe, and control the pressure testing mechanism to press down. The above-mentioned pressure testing mechanism includes: a door frame 17, a moving plate 18, and a pressure plate 19. A power control structure and a data measurement structure, and the positional relationship and connection relationship are as follows: a portal frame 17 is mounted on the operating table 2, a movable plate 18 is mounted on the portal frame 17, and is movably connected to the inner walls of both sides of the portal frame 17, a pressing plate 19 is mounted in the portal frame 17, and is located below the movable plate 18, a power control structure is mounted on both ends of the portal frame 17, and is respectively connected to the movable plate 18 and the pressing plate 19, and a data measurement structure is mounted on the pressing plate 19, wherein the power control structure includes: a pair of limit sliding parts and a lifting control part with the same structure;A pair of limit sliding parts are respectively installed on the inner wall surface of the door frame 17 and connected to the moving plate 18. The lifting control part is installed on the lower side of the operating table 2 and penetrates the operating table 2, and is connected to the moving plate 18 and the pressure plate 19. The limit sliding part includes a slide groove and a slider. The slide groove is embedded in the inner wall surface of the door frame 17. The slider is set in the slide groove and connected to the moving plate 18. The above-mentioned lifting control part includes: a second servo motor 20, a bracket 21, a rotating shaft 22, a pair of first bevel gears 23 with the same structure, and a pair of threaded rotating components with the same structure. The position relationship and connection relationship are as follows: the second servo motor 20 is installed on the lower wall surface of the operating table 2, and the second servo The servo motor 20 is installed on the lower side wall of the operating table 2, the bracket 21 is installed on the lower side wall of the operating table 2 and is located on one side of the second servo motor 20, the rotating shaft 22 is set in the bracket 21, and a pair of first bevel gears 23 are respectively embedded on both ends of the rotating shaft 22, and a pair of threaded rotating components respectively penetrate the operating table 2, the pressing plate 19 and the moving plate 18, and are respectively movably connected with the pair of first bevel gears 23, wherein the threaded rotating components include: a rotating shaft 24, a second bevel gear 25, a first threaded sleeve 26, a telescopic rod 27 and a threaded rod 28, and their positional relationship and connection relationship are as follows: the rotating shaft 24 penetrates the operating table 2, and the second bevel gear 25 is embedded in The lower end of the rotating shaft 24 is meshed with the first bevel gear 23, the first threaded sleeve 26 is embedded in the moving plate 18, one end of the telescopic rod 27 is arranged on the lower side wall of the moving plate 18, and the other end is connected to the pressing plate 19, the threaded rod 28 spirally penetrates the first threaded sleeve 26, the lower end of the threaded rod 28 is connected to the rotating shaft 24, the upper end of the threaded rod 28 is movably connected to the lower side wall of the portal frame 17, the height measuring part is arranged on the side wall of the pressing plate 19, and its position relationship and connection relationship are as follows, the pressure measuring part includes: a pressure sensor 29, a signal collection module 30 and a signal transmission module 31, and its position The relationship and connection relationship are as follows: the pressure sensor 29 is installed on the pressing plate 19 and contacts the lower side wall of the moving plate 18; the signal collecting module 30 is installed on the pressing plate 19 and connected to the pressure sensor 29; the signal transmitting module 31 is installed on one side of the signal collecting module 30 and connected to the signal collecting module 30; the height measuring part includes: a limit frame 32, a limit roller 33 and a measuring ruler 34, and the position relationship and connection relationship are as follows: the limit frame 32 is installed on the side wall of the pressing plate 19, the limit roller 33 is embedded in the limit frame 32, and the two ends are respectively movably connected to the limit frame 32, and the measuring ruler 34 is inserted in the limit frame 32 and fits with the limit roller 33;

[0068] When in use, start the second servo motor 20, control the driving end of the second servo motor 20 to rotate, drive the rotating shaft 22 on the bracket 21 to rotate, drive the first bevel gear 23 on the rotating shaft 22 to rotate, the first bevel gear 23 rotates to drive the second bevel gear 25 on the lower end of the rotating shaft 24 meshing therewith to rotate, the second bevel gear 25 rotates to drive the rotating shaft 24 to rotate, thereby driving the threaded rod 28 on the rotating shaft 24 to rotate, the threaded rod 28 rotates to drive the movable plate 18 to move downward along the slide grooves and sliders on both sides of the portal frame 17 under the limiting action of the first threaded sleeve 26, so that the lower side wall of the pressing plate 19 faces the pipe to be extruded, at this time, the pressure sensor 29 between the movable plate 18 and the pressing plate 19 senses the pressure signal and sends the corresponding electrical signal to the signal collection module 30, the electrical signal received by the signal collection module 30 is amplified by the signal transmission module 31 and sent to the central controller for storage, the pressure changes at each stage during the extrusion process are recorded, and the corresponding pressure values ​​are obtained, which are compared with the existing data indicators to determine the high extrusion resistance characteristics of the MPVE corrugated pipe. , start the auxiliary unloading structure, the auxiliary unloading structure includes a pair of top-pushing unloading parts with the same structure, a pair of square through holes with the same structure are opened on the lower end surface of the operating table 2, and the pair of top-pushing unloading parts are respectively embedded in the pair of square through holes; the top-pushing unloading part includes: a suspension 13, a second electric push rod 14, a second hydraulic cylinder 15 and a push plate 16, and their positional relationship and connection relationship are as follows: the suspension 13 is embedded in the square through hole, and the upper end is fixedly connected to the operating table 2, the second electric push rod 14 is arranged in the suspension 13 along the vertical direction, and the second hydraulic cylinder 15 is arranged along the water The push plate 16 is mounted on the movable end of the second hydraulic cylinder 15. When in use, the second electric push rod 14 in the suspension 13 is started, and the movable end of the second electric push rod 14 expands, pushing the second hydraulic cylinder 15 thereon to move upward, and the second hydraulic cylinder 15 is pushed up to the plane above the operating table 2, and the movable end of the second hydraulic cylinder 15 is controlled to expand, and the push plate 16 on the movable end of the second hydraulic cylinder 15 pushes the waste flattened after the test off the operating table 2. Repeating the above actions can perform continuous testing.

[0069] According to the specific operating steps in the embodiment, the produced MPVE corrugated pipe is subjected to an extrusion test, and the test results are recorded. The pipe is pressed to more than 50% of the inner diameter without breaking or stratification, ensuring that the flow is sustained and unobstructed.

[0070] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A detection device for an MPVE corrugated pipe with high extrusion resistance, comprising a support frame (1) and an operating table (2), characterized in that: The operating table (2) is mounted on the support frame (1), an auxiliary loading mechanism is mounted on one side of the operating table (2), an auxiliary fixing mechanism is mounted on the operating table (2), and a pressure testing mechanism is mounted above the auxiliary fixing mechanism; The auxiliary feeding mechanism comprises: a conveyor belt (3), a grabbing control structure and a pushing feeding structure; The conveyor belt (3) is installed on one side of the operating table (2), the grabbing control structure is installed on one end of the conveyor belt (3), and the pushing feeding structure is installed on one end of the conveyor belt (3) and is connected to the grabbing control structure; The pushing and feeding structure comprises a pair of pushing parts with the same structure, the pair of pushing parts are respectively installed on the two side walls of the operating table (2), and the pushing parts comprise: a fixing frame (4), a first hydraulic cylinder (5) and a connecting block (6); The fixed frame (4) is mounted on the side wall of the conveyor belt (3); the first hydraulic cylinder (5) is mounted in the fixed frame (4) along the horizontal direction, and the movable end extends out of the fixed frame (4); and the connecting block (6) is embedded on the movable end of the first hydraulic cylinder (5); The grabbing control structure comprises a pair of grabbing parts with the same structure, the pair of grabbing parts are respectively arranged on the pair of pushing parts and connected to the connecting block (6); the grabbing part comprises: an auxiliary frame (7), a first electric push rod (8) and a pneumatic clamp (9); The auxiliary frame (7) is mounted on the connecting block (6), the first electric push rod (8) is mounted on the auxiliary frame (7) in a horizontal direction, and the pneumatic clamp (9) is embedded on the movable end of the first electric push rod (8); The auxiliary fixing mechanism comprises: a flip clamping structure and an auxiliary unloading structure; The flip clamping structure comprises a pair of flip limit assemblies with the same structure, the pair of flip limit assemblies are respectively installed on the operating table (2) and their positions correspond to each other; the operating table (2) is provided with a pair of rectangular grooves with the same structure and their positions correspond to each other; the flip limit assemblies are embedded in the rectangular grooves; The flip limit assembly comprises: a first servo motor (10), a rotating wheel (11) and an arc-shaped buckle plate (12); The first servo motor (10) is installed in the rectangular groove, the rotating wheel (11) is embedded on the driving end of the first servo motor (10), and one end of the arc-shaped buckle plate (12) is embedded on the rotating wheel (11) and is located in the rectangular groove; The auxiliary unloading structure comprises a pair of push unloading parts with the same structure, a pair of square through holes with the same structure are opened on the lower end surface of the operating table (2), and the pair of push unloading parts are respectively embedded in the pair of square through holes; the push unloading parts comprise: a suspension (13), a second electric push rod (14), a second hydraulic cylinder (15) and a push plate (16); The suspension (13) is embedded in the square through hole, and the upper end is fixedly connected to the operating table (2); the second electric push rod (14) is vertically installed in the suspension (13); the second hydraulic cylinder (15) is horizontally installed on the movable end of the second electric push rod (14); and the push plate (16) is embedded in the movable end of the second hydraulic cylinder (15); It also includes a pressure testing mechanism, which includes: a portal frame (17), a moving plate (18), a pressing plate (19), a power control structure and a data measurement structure; The portal frame (17) is mounted on the operating table (2); the movable plate (18) is mounted on the portal frame (17) and is movably connected to the inner walls of both sides of the portal frame (17); the pressing plate (19) is mounted in the portal frame (17) and is located below the movable plate (18); the power control structure is mounted on both ends of the portal frame (17) and is respectively connected to the movable plate (18) and the pressing plate (19); and the data measurement structure is mounted on the pressing plate (19); The power control structure comprises: a pair of limit sliding parts and a lifting control part with the same structure; the pair of limit sliding parts are respectively installed on the inner wall surface of the door frame (17) and connected to the moving plate (18); the lifting control part is installed on the lower side of the operating table (2), penetrates the operating table (2), and is connected to the moving plate (18) and the pressure plate (19); The position-limiting sliding part comprises a slide groove and a slider, the slide groove is embedded in the inner wall surface of the door frame (17), the slider is sleeved in the slide groove and connected to the moving plate (18); The lifting control unit comprises: a second servo motor (20), a bracket (21), a rotating shaft (22), a pair of first bevel gears (23) with the same structure, and a pair of threaded rotating components with the same structure; The second servo motor (20) is mounted on the lower side wall of the operating table (2); the bracket (21) is mounted on the lower side wall of the operating table (2) and is located on one side of the second servo motor (20); the rotating shaft (22) is sleeved in the bracket (21); a pair of the first bevel gears (23) are respectively embedded on both ends of the rotating shaft (22); a pair of the threaded rotating components respectively penetrate the operating table (2), the pressure plate (19) and the moving plate (18), and are respectively movably connected to the pair of the first bevel gears (23); The threaded rotating assembly comprises: a rotating shaft (24), a second bevel gear (25), a first threaded sleeve (26), a telescopic rod (27) and a threaded rod (28); The rotating shaft (24) passes through the operating table (2); the second bevel gear (25) is embedded on the lower end of the rotating shaft (24) and meshes with the first bevel gear (23); the first threaded sleeve (26) is embedded on the movable plate (18); one end of the telescopic rod (27) is arranged on the lower side wall of the movable plate (18) and the other end is connected to the pressing plate (19); the threaded rod (28) spirally passes through the first threaded sleeve (26); the lower end of the threaded rod (28) is connected to the rotating shaft (24); and the upper end of the threaded rod (28) is movably connected to the lower side wall of the portal frame (17); The data measurement structure comprises: a pressure measuring part and a height measuring part; the pressure measuring part is mounted on the pressing plate (19) and connected to the lower side wall surface of the moving plate (18); the height measuring part is mounted on the side wall of the pressing plate (19); The pressure measuring unit comprises: a pressure sensor (29), a signal collecting module (30) and a signal transmitting module (31); The pressure sensor (29) is mounted on the pressing plate (19) and in contact with the lower wall surface of the moving plate (18); the signal collecting module (30) is mounted on the pressing plate (19) and connected to the pressure sensor (29); the signal transmitting module (31) is mounted on one side of the signal collecting module (30) and connected to the signal collecting module (30); The height measuring part comprises: a limiting frame (32), a limiting roller (33) and a measuring ruler (34); The limiting frame (32) is installed on the side wall of the pressure plate (19), the limiting roller (33) is embedded in the limiting frame (32), and both ends are movably connected to the limiting frame (32), and the measuring ruler (34) is inserted into the limiting frame (32) and fits with the limiting roller (33).

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