CN111055469A - Forming process and device of flexible composite pipe - Google Patents

Forming process and device of flexible composite pipe Download PDF

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Publication number
CN111055469A
CN111055469A CN201911291113.0A CN201911291113A CN111055469A CN 111055469 A CN111055469 A CN 111055469A CN 201911291113 A CN201911291113 A CN 201911291113A CN 111055469 A CN111055469 A CN 111055469A
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China
Prior art keywords
parts
pipe
cooling
extrusion
cutting
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CN201911291113.0A
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Chinese (zh)
Inventor
宋忠林
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Yanggu Lufa New Material Co ltd
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Yanggu Lufa New Material Co ltd
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Priority to CN201911291113.0A priority Critical patent/CN111055469A/en
Publication of CN111055469A publication Critical patent/CN111055469A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/16—PVDF, i.e. polyvinylidene fluoride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/005—Hoses, i.e. flexible
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0812—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0856—Iron
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention provides a forming process of a flexible composite pipe, which comprises the following steps: a. weighing: weighing the following materials in parts by weight: 300 parts of 200-parts of polyethylene, 20-30 parts of polyvinyl chloride, 15-18 parts of polypropylene, 8-12 parts of polyurethane, 14-22 parts of polyamide, 5-10 parts of polyvinylidene fluoride, 8-10 parts of aluminum powder, 5-10 parts of iron powder, 3-7 parts of nano silicon dioxide powder, 11-15 parts of plasticizer and 13-18 parts of flame retardant; b. extruding: the material is put into a molding extrusion device for extrusion, the temperature of an extrusion cylinder is controlled to be 180 ℃ and the temperature of a template is controlled to be 225 ℃ to obtain a semi-finished pipe; c. and (3) cooling: cooling the extruded pipe with water to harden and shape, and continuously and uniformly drawing out the pipe while cooling; d. cutting: cutting the cooled pipe; e. and (4) checking: and detecting the cut pipe to obtain the finished inner pipe. The invention has the advantage of simple and convenient process.

Description

Forming process and device of flexible composite pipe
Technical Field
The invention belongs to the technical field of composite pipe processing, and relates to a forming process and a device of a flexible composite pipe.
Background
The flexible composite pipe has the advantages of higher corrosion resistance and stronger acid resistance and alkali resistance; the inner wall is smooth and is not easy to scale, the coefficient of the friction resistance is lower, and the application effect in the oil and gas field with high mineralization degree is very ideal; the flexibility is better, and the quality is lighter relatively, and the resistance of carrying fluid is very low, and the bending that can be free in the use in the construction of reality is used, can effectively reduce because the crooked influence of pipeline that relief and address fault lead to, promotes the efficiency of construction of oil gas pipeline, promotes the life of pipeline. In a word, the flexible composite pipe is ideal in application in oil field gathering and transportation and has very obvious application significance.
In the prior art, a forming process of an inner pipe in a flexible composite pipe is not available, and the inner pipe is manufactured only by manual experience, so that the forming process and the device of the flexible composite pipe are necessary.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a forming process of a flexible composite pipe, which has the characteristic of simple and convenient process.
The purpose of the invention can be realized by the following technical scheme: a forming process of a flexible composite pipe is characterized by comprising the following steps:
a. weighing: weighing the following materials in parts by weight: 300 parts of 200-parts of polyethylene, 20-30 parts of polyvinyl chloride, 15-18 parts of polypropylene, 8-12 parts of polyurethane, 14-22 parts of polyamide, 5-10 parts of polyvinylidene fluoride, 8-10 parts of aluminum powder, 5-10 parts of iron powder, 3-7 parts of nano silicon dioxide powder, 11-15 parts of plasticizer and 13-18 parts of flame retardant;
b. extruding: the material is put into a molding extrusion device for extrusion, the temperature of an extrusion cylinder is controlled to be 180 ℃ and the temperature of a template is controlled to be 225 ℃ to obtain a semi-finished pipe;
c. and (3) cooling: cooling the extruded pipe with water to harden and shape, and continuously and uniformly drawing out the pipe while cooling;
d. cutting: cutting the cooled pipe;
e. and (4) checking: and detecting the cut pipe to obtain the finished inner pipe.
The plasticizer in the step a is phthalic diester.
The cooling temperature in the step c is 15-35 ℃.
And d, adopting a pipe fixed-length cutting machine for cutting in the step d.
Correspondingly, the invention also provides a forming extrusion device, which comprises a machine base and is characterized by further comprising an extrusion cylinder, a screw rod, a support and a lifting seat, wherein the extrusion cylinder is horizontally fixed on the machine base, one end of the extrusion cylinder is a closed end, the other end of the extrusion cylinder is an output end, an input port for inputting materials is arranged on the side part of the extrusion cylinder, the input port is close to the closed end of the extrusion cylinder, one end of the screw rod is positioned in the extrusion cylinder and extends to the output end of the extrusion cylinder, the other end of the screw rod penetrates out of the closed end of the extrusion cylinder and is connected with a power motor capable of driving the extrusion cylinder to rotate, the support is fixed on the machine base, the lifting seat is arranged on the support, the lifting seat is connected with a moving structure capable of driving the lifting seat to move up and down, a plurality of templates which are arranged in a straight line from top to bottom are fixed on the lifting seat, any, the quick clamp is arranged between the template and the extrusion cylinder, and the machine base is also provided with a feeding mechanism which can automatically feed materials to the input port.
The moving structure comprises a guide rail, a sliding block, a gear, a rack and a second power motor, the guide rail is vertically fixed on the support, the sliding block is arranged on the guide rail, the rack is vertically fixed on the support and parallel to the guide rail, the second power motor is fixed on the sliding block, an output shaft of the second power motor is horizontally arranged, the gear is fixed at the end of the output shaft of the second power motor, the gear is meshed with the rack, and the lifting seat is fixed on the sliding block.
According to the invention, the gear is driven to rotate by the power motor II, the gear is meshed with the rack, so that the sliding block moves up and down along the guide rail, the sliding block drives the upgrading seat to move up and down, the lifting seat drives the template to move up and down, different templates can be replaced as required, and the template is positioned by the quick clamp, so that different use requirements can be met, and the practicability is high.
And a limiting block is also fixed on the guide rail.
The feeding mechanism comprises a batching box, a track and a movable frame, the drive shaft, feeder sleeve and material pump, the batching box passes through the supporting legs to be fixed on the frame, batching box upper portion has the charge door, the batching box lower part has the discharge gate, discharge gate department sets up the solenoid valve, discharge gate and feeder sleeve one end are linked together, the feeder sleeve other end is linked together with the input port, the material pump sets up on the feeder sleeve, the track passes through the mounting bracket level to be fixed on batching box upper portion, the carriage frame sets up on the track, the carriage frame links to each other with the drive structure that can drive its round trip movement, the vertical rotation of drive shaft sets up at carriage frame middle part, the drive shaft upper end can drive its pivoted motor power three with one and link to each other, the drive shaft lower extreme stretches into the batching box and links to each other with spiral stirring piece, carriage frame one end is installed pusher piece one through.
According to the invention, the driving structure drives the movable frame to move back and forth, the movable frame drives the driving shaft to move back and forth, the driving shaft is driven by the power motor III to rotate, the driving shaft drives the spiral stirring piece to rotate, the spiral stirring piece stirs materials in the batching box, meanwhile, the movable frame drives the pushing piece I and the pushing piece II to move back and forth, the pushing piece I and the pushing piece II push the materials in the batching box back and forth, the materials in the batching box can be quickly and uniformly mixed, the mixed materials are conveyed into the extrusion cylinder through the feeding pipe, and feeding is reliable.
The driving structure comprises a driving shaft, a driven shaft, a main chain wheel, a driven chain wheel, a chain, a power motor four, a torsion spring I, a torsion spring II, a pushing block, a linkage block I, a linkage block II, a collision rod I and a collision rod II, wherein the collision rod I is horizontally fixed at one end of the mounting frame, the collision rod II is horizontally fixed at the other end of the mounting frame, the torsion spring I is sleeved on the positioning rotating shaft I, the linkage block I is fixed on the positioning rotating shaft I, a touch part I and a butting part I are arranged on the linkage block I, the touch part I can be contacted with the collision rod I, a regulating and controlling rod I is also arranged on the linkage block I, one end of the moving frame is also provided with a left limiting rod I and a right limiting rod I which are used for regulating and controlling the rod I to limit, the regulating and controlling rod I is positioned between the left limiting rod I and the right limiting rod I, the torsion spring II is sleeved on the positioning rotating shaft II, the, and touching portion two can contact with collision pole two, still have regulation and control pole two on the linkage piece two, the carriage other end still has and is used for two spacing left gag lever post two and right gag lever post two of regulation and control pole, and regulation and control pole two is located between left gag lever post two and the right gag lever post two, the vertical rotation of driving shaft sets up in mounting bracket one end, the main sprocket is fixed on the driving shaft, the driving shaft tip still can drive its pivoted motor power four with one and link to each other, the vertical rotation of driven shaft sets up at the mounting bracket other end, fix on the driven shaft from the sprocket, the chain cover is established at the main sprocket and from between the sprocket, it fixes on the chain to promote the piece, and promote the piece can with support to lean on a portion one, support to.
In the invention, a driving shaft is driven to rotate by a power motor, the driving shaft enables a chain to rotate, the chain drives a pushing block to rotate, the pushing block is in contact with a first abutting part of a first linkage block, the pushing block drives the first linkage block to move, the first linkage block drives a moving frame to move, the moving frame is driven to move towards one side of the driving shaft, a first abutting part of the first linkage block is in contact with a first collision rod, the first linkage block swings, the first linkage block is separated from the pushing block, the moving frame stops moving, the chain continues to rotate at the moment, the chain drives the pushing block to rotate, the pushing block is in contact with a second abutting part of a second linkage block, the second linkage block drives a second linkage block to move, the second linkage block drives the moving frame to move towards one side of a driven shaft, the second abutting part of the second linkage block is in contact with the second collision rod, the second linkage block swings, and the second linkage block is separated from the pushing block, the movable frame stops moving, so that the movable frame can be driven to move back and forth.
Compared with the prior art, the invention has the advantages that: the inner tube in the flexible composite tube can be manufactured by weighing, extruding, cooling, cutting and inspecting, and the process is simple and convenient.
Drawings
FIG. 1 is a schematic diagram of the process steps of the present invention.
Fig. 2 is a schematic perspective view of the extrusion molding apparatus.
Fig. 3 is a schematic plan view of the moving structure in the present profile extrusion apparatus.
FIG. 4 is a schematic plan view of a portion of the present extrusion molding apparatus removed.
Fig. 5 is a schematic perspective view of a feeding mechanism in the extrusion molding apparatus.
FIG. 6 is a schematic perspective view of the extruder with the feed mechanism removed.
Fig. 7 is a partially enlarged view of a portion a in fig. 6.
Fig. 8 is a partially enlarged view at B in fig. 6.
Fig. 9 is a schematic perspective view of the snap clamp of the extrusion molding apparatus.
In the figure, 1, a machine base; 2. an extrusion cylinder; 2a, an input port; 3. a template; 4. quickly clamping; 5. a support; 6. a limiting block; 7. a rack; 8. a guide rail; 9. a second power motor; 10. a gear; 11. a slider; 12. a lifting seat; 13. a screw; 14. a first power motor; 15. a batching box; 15a, a feed inlet; 15b, a discharge hole; 16. a material pump; 17. a feed pipe; 18. a power motor IV; 19. a main sprocket; 20. a drive shaft; 21. a chain; 22. a movable frame; 23. a track; 24. a driven shaft; 25. a slave sprocket; 26. a mounting frame; 27. a spiral stirring sheet; 28. a drive shaft; 29. pushing a material sheet I; 30. a linkage block I; 30a, a first abutting part; 30b, a first touch part; 30c, a first adjusting and controlling rod; 31. a first collision rod; 32. a pushing block; 33. a second linkage block; 33a and a second abutting part; 33b, a second touch part; 33c, a second adjusting and controlling rod; 34. a third power motor; 35. a collision rod II; 36. pushing the material sheet II; 37. a first left limiting rod; 38. positioning the first rotating shaft; 39. a first torsion spring; 40. a first right limiting rod; 41. positioning a second rotating shaft; 42. a second left limiting rod; 43. and a second right limiting rod.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 9, the molding process of the flexible composite pipe comprises the following steps:
a. weighing: weighing the following materials in parts by weight: 300 parts of 200-parts of polyethylene, 20-30 parts of polyvinyl chloride, 15-18 parts of polypropylene, 8-12 parts of polyurethane, 14-22 parts of polyamide, 5-10 parts of polyvinylidene fluoride, 8-10 parts of aluminum powder, 5-10 parts of iron powder, 3-7 parts of nano silicon dioxide powder, 11-15 parts of plasticizer and 13-18 parts of flame retardant; in this example, materials were weighed: 280 parts of polyethylene, 24 parts of polyvinyl chloride, 16 parts of polypropylene, 9 parts of polyurethane, 15 parts of polyamide, 6 parts of polyvinylidene fluoride, 9 parts of aluminum powder, 7 parts of iron powder, 4 parts of nano silicon dioxide powder, 12 parts of plasticizer and 17 parts of flame retardant;
b. extruding: the material is put into a molding extrusion device for extrusion, the temperature of an extrusion cylinder is controlled to be 180 ℃ and the temperature of a template is controlled to be 225 ℃ to obtain a semi-finished pipe; in the embodiment, the temperature of the extrusion cylinder is controlled at 160 ℃, the temperature of the template is controlled at 215 ℃, and a semi-finished pipe is obtained;
c. and (3) cooling: cooling the extruded pipe with water to harden and shape, and continuously and uniformly drawing out the pipe while cooling;
d. cutting: cutting the cooled pipe;
e. and (4) checking: and detecting the cut pipe to obtain the finished inner pipe.
The plasticizer in step a is a phthalic diester.
The cooling temperature in step c is 15-35 deg.C, and in this example, the cooling temperature in step c is 20 deg.C.
And d, adopting a pipe fixed-length cutting machine for cutting in the step d.
Correspondingly, the invention also provides a forming extrusion device, which comprises a machine base 1, and further comprises an extrusion cylinder 2, a screw 13, a bracket 5 and a lifting seat 12, wherein the extrusion cylinder 2 is horizontally fixed on the machine base 1, and in the embodiment, the extrusion cylinder 2 is horizontally fixed on the machine base 1 in a bolt connection mode; one end of the extrusion container 2 is a closed end, the other end of the extrusion container 2 is an output end, an input port 2a for inputting materials is arranged on the side part of the extrusion container 2, the input port 2a is close to the closed end of the extrusion container 2, one end of a screw 13 is positioned in the extrusion container 2 and extends to the output end of the extrusion container 2, the other end of the screw 13 penetrates out of the closed end of the extrusion container 2 and is connected with a power motor I14 capable of driving the screw to rotate, the support 5 is fixed on the base 1, and in the embodiment, the support 5 is fixed on the base 1 in a welding; the lifting seat 12 is arranged on the bracket 5, the lifting seat 12 is connected with a moving structure capable of driving the lifting seat to move up and down, a plurality of templates 3 which are arranged in a straight line from top to bottom are fixed on the lifting seat 12, in the embodiment, the number of the templates 3 is four, and the templates can be used for forming pipes of different types; any one of the templates 3 can seal the output end of the extrusion cylinder 2, a forming channel for pipe forming is arranged on the template 3, and a quick clamp 4 is arranged between the template 3 and the extrusion cylinder 2, wherein in the embodiment, the quick clamp 4 is an existing product available on the market; the machine base 1 is also provided with a feeding mechanism which can automatically feed materials to the input port 2 a.
The moving structure comprises a guide rail 8, a sliding block 11, a gear 10, a rack 7 and a second power motor 9, the guide rail 8 is vertically fixed on the support 5, the sliding block 11 is arranged on the guide rail 8, the rack 7 is vertically fixed on the support 5, the rack 7 is parallel to the guide rail 8, the second power motor 9 is fixed on the sliding block 11, an output shaft of the second power motor 9 is horizontally arranged, the gear 10 is fixed at the end part of the output shaft of the second power motor 9, the gear 10 is meshed with the rack 7, and the lifting seat 12 is fixed on the sliding block 11.
According to the invention, the gear 10 is driven to rotate by the second power motor 9, the gear 10 is meshed with the rack 7, the sliding block 11 is enabled to move up and down along the guide rail 8, the sliding block 11 drives the upgrading seat to move up and down, the lifting seat 12 drives the template 3 to move up and down, different templates 3 can be replaced as required, and the template 3 is positioned by the quick clamp 4, so that different use requirements can be met, and the practicability is strong.
The guide rail 8 is also fixed with a limiting block 6.
The feeding mechanism comprises a proportioning box 15, a track 23, a movable frame 22, a driving shaft 28, a feeding pipe 17 and a material pump 16, the proportioning box 15 is fixed on the machine base 1 through supporting legs, the upper part of the proportioning box 15 is provided with a feeding port 15a, the lower part of the proportioning box 15 is provided with a discharging port 15b, the discharging port 15b is provided with an electromagnetic valve, the discharging port 15b is communicated with one end of the feeding pipe 17, the other end of the feeding pipe 17 is communicated with an input port 2a, the material pump 16 is arranged on the feeding pipe 17, the track 23 is horizontally fixed on the upper part of the proportioning box 15 through a mounting frame 26, the movable frame 22 is arranged on the track 23, the movable frame 22 is connected with a driving structure capable of driving the movable frame to move back and forth, the driving shaft 28 is vertically arranged in the middle part of the movable frame 22, the upper end of the driving shaft 28 is connected with a, one end of the moving frame 22 is provided with a first material pushing sheet 29 through a first positioning rotating shaft 38, and the other end of the moving frame 22 is provided with a second material pushing sheet 36 through a second positioning rotating shaft 41.
In the invention, the driving structure drives the movable frame 22 to move back and forth, the movable frame 22 drives the driving shaft 28 to move back and forth, the driving shaft 28 is driven to rotate by the third power motor 34, the driving shaft 28 drives the spiral stirring piece 27 to rotate, the spiral stirring piece 27 stirs materials in the batching box 15, meanwhile, the movable frame 22 drives the first material pushing piece 29 and the second material pushing piece 36 to move back and forth, the first material pushing piece 29 and the second material pushing piece 36 push the materials in the batching box 15 back and forth, so that the materials in the batching box 15 can be quickly and uniformly mixed, and the mixed materials are conveyed into the extrusion cylinder 2 through the feeding pipe 17, and the feeding is reliable.
The driving structure comprises a driving shaft 20, a driven shaft 24, a main chain wheel 19, a driven chain wheel 25, a chain 21, a power motor four 18, a first torsion spring 39, a second torsion spring, a pushing block 32, a first linkage block 30, a second linkage block 33, a first collision rod 31 and a second collision rod 35, wherein the first collision rod 31 is horizontally fixed at one end of the mounting frame 26, the second collision rod 35 is horizontally fixed at the other end of the mounting frame 26, the first torsion spring 39 is sleeved on a first positioning rotating shaft 38, the first linkage block 30 is fixed on the first positioning rotating shaft 38, the first linkage block 30 is provided with a first touch part 30b and a first abutting part 30a 30b, the first touch part 30b can be contacted with the first collision rod 31, the first linkage block 30 is further provided with a first regulating and controlling rod 30c, one end of the moving frame 22 is further provided with a first left limiting rod 37 and a first limiting rod 40 for limiting the first regulating and controlling rod 30c, and the first regulating and controlling rod 30c is positioned between the, after the first contact part 30b of the first linkage block 30 is contacted with the first collision rod 31 to enable the first linkage block 30 to swing, the first linkage block 30 is enabled to realize automatic reset under the action of the first torsion spring 39; the second torsion spring is sleeved on the second positioning rotating shaft 41, the second linkage block 33 is fixed on the second positioning rotating shaft 41, the second linkage block 33 is provided with a second touch part 33b and a second abutting part 33a, the second touch part 33b can be in contact with the second collision rod 35, the second linkage block 33 is further provided with a second adjusting and controlling rod 33c, the other end of the moving frame 22 is further provided with a second left limiting rod 42 and a second right limiting rod 43 which are used for limiting the second adjusting and controlling rod 33c, and the second adjusting and controlling rod 33c is located between the second left limiting rod 42 and the second right limiting rod 43; the driving shaft 20 vertically rotates and is arranged at one end of the mounting frame 26, the main chain wheel 19 is fixed on the driving shaft 20, the end part of the driving shaft 20 is further connected with a power motor four 18 capable of driving the driving shaft to rotate, the driven shaft 24 vertically rotates and is arranged at the other end of the mounting frame 26, the driven chain wheel 25 is fixed on the driven shaft 24, the chain 21 is sleeved between the main chain wheel 19 and the driven chain wheel 25, the pushing block 32 is fixed on the chain 21, and the pushing block 32 can be in contact with the first abutting part 30a and the second abutting part 33 a.
In the invention, the driving shaft 20 is driven to rotate by the four power motors 18, the driving shaft 20 drives the chain 21 to rotate, the chain 21 drives the pushing block to rotate, the pushing block 32 is contacted with the abutting part one 30a of the linkage block one 30, the pushing block 32 drives the linkage block one 30 to move, the linkage block one 30 drives the moving frame 22 to move, the moving frame 22 moves towards one side of the driving shaft 20, the first touching part 30b of the linkage block one 30 is contacted with the first collision rod 31, the linkage block one 30 swings, the linkage block one 30 is separated from the pushing block 32, the moving frame 22 stops moving, at the moment, the chain 21 continues rotating, the chain 21 drives the pushing block 32 to rotate, the pushing block 32 is contacted with the abutting part two 33a of the linkage block two 33, the linkage block two 33 drives the moving frame 22 to move, the moving frame 22 moves towards one side of the moving frame 24, the second touching part 33b of the linkage block two 33 is contacted with the second collision rod 35, the second linkage block 33 is swung, the second linkage block 33 is separated from the pushing block 32, the moving frame 22 stops moving, and the moving frame 22 can be driven to move back and forth.
The above components are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (4)

1. A forming process of a flexible composite pipe is characterized by comprising the following steps:
a. weighing: weighing the following materials in parts by weight: 300 parts of 200-parts of polyethylene, 20-30 parts of polyvinyl chloride, 15-18 parts of polypropylene, 8-12 parts of polyurethane, 14-22 parts of polyamide, 5-10 parts of polyvinylidene fluoride, 8-10 parts of aluminum powder, 5-10 parts of iron powder, 3-7 parts of nano silicon dioxide powder, 11-15 parts of plasticizer and 13-18 parts of flame retardant;
b. extruding: the material is put into a molding extrusion device for extrusion, the temperature of an extrusion cylinder is controlled to be 180 ℃ and the temperature of a template is controlled to be 225 ℃ to obtain a semi-finished pipe;
c. and (3) cooling: cooling the extruded pipe with water to harden and shape, and continuously and uniformly drawing out the pipe while cooling;
d. cutting: cutting the cooled pipe;
e. and (4) checking: and detecting the cut pipe to obtain the finished inner pipe.
2. The process of claim 1, wherein the plasticizer in step a is a phthalic diester.
3. The process of claim 1, wherein the cooling temperature in step c is 15-35 ℃.
4. The process according to claim 1, wherein the cutting in step d is performed by a tube length cutting machine.
CN201911291113.0A 2019-12-16 2019-12-16 Forming process and device of flexible composite pipe Pending CN111055469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911291113.0A CN111055469A (en) 2019-12-16 2019-12-16 Forming process and device of flexible composite pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911291113.0A CN111055469A (en) 2019-12-16 2019-12-16 Forming process and device of flexible composite pipe

Publications (1)

Publication Number Publication Date
CN111055469A true CN111055469A (en) 2020-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911291113.0A Pending CN111055469A (en) 2019-12-16 2019-12-16 Forming process and device of flexible composite pipe

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112980082A (en) * 2021-03-22 2021-06-18 浙江地球管业有限公司 Socket joint type polyethylene solid wall drain pipe
CN115592922A (en) * 2022-09-30 2023-01-13 浙江全能丰禾塑业有限公司（Cn） Compact cooling device of composite aluminum-plastic pipe extrusion molding line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112980082A (en) * 2021-03-22 2021-06-18 浙江地球管业有限公司 Socket joint type polyethylene solid wall drain pipe
CN112980082B (en) * 2021-03-22 2022-05-10 浙江地球管业有限公司 Socket joint type polyethylene solid wall drain pipe
CN115592922A (en) * 2022-09-30 2023-01-13 浙江全能丰禾塑业有限公司（Cn） Compact cooling device of composite aluminum-plastic pipe extrusion molding line

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