CN115401931A - Preparation process of glass fiber reinforced pipe - Google Patents
Preparation process of glass fiber reinforced pipe Download PDFInfo
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- CN115401931A CN115401931A CN202211065569.7A CN202211065569A CN115401931A CN 115401931 A CN115401931 A CN 115401931A CN 202211065569 A CN202211065569 A CN 202211065569A CN 115401931 A CN115401931 A CN 115401931A
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007493 shaping process Methods 0.000 claims abstract description 15
- 239000011185 multilayer composite material Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 35
- 238000007906 compression Methods 0.000 claims description 35
- 238000004519 manufacturing process Methods 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 24
- 238000001125 extrusion Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000005096 rolling process Methods 0.000 claims description 16
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 61
- 238000010586 diagram Methods 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Classifications
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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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
-
- 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
- B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
-
- 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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/566—Winding and joining, e.g. winding spirally for making tubular articles followed by compression
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/581—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material
- B29C53/582—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material comprising reinforcements, e.g. wires, threads
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
- B29C53/8016—Storing, feeding or applying winding materials, e.g. reels, thread guides, tensioners
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
- B29C53/8083—Improving bonding of wound materials or layers
-
- 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
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The application discloses a preparation process of a glass fiber reinforced pipe, which comprises the following steps: (1) Respectively extruding the inner layer and the outer layer of the pipe by at least two extruders; (2) Unreeling the prefabricated and molded glass fiber belt, and heating the glass fiber belt to be used as a prefabricated and molded glass fiber belt reinforcing layer, wherein the heating temperature is 150-220 ℃; (3) Compounding and extruding the inner layer of the pipe, the prefabricated glass fiber belt reinforcing layer and the outer layer of the pipe to form a multi-layer composite material; (4) Winding and forming the multilayer composite material to be spiral along the axial direction, mutually welding adjacent parts of the spiral in the winding process, and then cooling and shaping. The multiple layers of the pipeline prepared by the preparation process have good integrity and higher pipeline strength; and moreover, the material is saved, and the energy is saved and the environment is protected.
Description
Technical Field
The invention relates to the technical field of engineering element or part production, in particular to a preparation process of a glass fiber reinforced pipe.
Background
The cable protective sleeve is a novel sleeve material which is popularized and used in power engineering, is required to have the characteristics of flame retardance, high strength, corrosion resistance, heat resistance, insulation, long service life, smooth inner and outer walls, no toxicity, environmental friendliness and the like, and is widely applied to engineering construction such as domestic and foreign power grid construction and transformation, municipal roads, traffic roads and bridges, civil aviation airports and the like.
At present, the plastic pipes required by cable protective sleeves and other similar applications are mainly formed by extrusion molding, and extrusion molding is one of the main forming methods of plastic products. When the pipeline is prepared by adopting an extrusion molding method, raw materials in a molten state are acted by an extruder to form a pipe blank, and the pipe blank is cooled to be molded. However, when the conventional method is used to manufacture a multi-layer pipeline, the integrity of the joint between the multiple layers of the pipeline formed by directly extruding the pipe blank is poor, and the strength is not high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a preparation process of a glass fiber reinforced pipe, wherein the multiple layers of the pipeline prepared by the preparation process have good integrity of combination, and the pipeline has higher strength; and moreover, the material is saved, and the energy is saved and the environment is protected.
The technical scheme adopted by the invention is as follows:
a preparation process of a glass fiber reinforced pipe comprises the following steps:
(1) Respectively extruding the inner layer and the outer layer of the pipe by at least two extruders;
(2) Unreeling the prefabricated forming glass fiber belt, and heating the glass fiber belt to be used as a prefabricated forming glass fiber belt reinforcing layer, wherein the heating temperature is 150-220 ℃;
(3) Compounding and extruding the inner layer of the pipe, the prefabricated glass fiber belt reinforcing layer and the outer layer of the pipe to form a multi-layer composite material;
(4) Winding and forming the multilayer composite material to be spiral along the axial direction, mutually welding adjacent parts of the spiral in the winding process, and then cooling and shaping.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme of the invention, the inner pipe layer, the prefabricated glass fiber tape reinforcing layer and the outer pipe layer are compounded and extruded to form the multilayer composite material, and then are wound for forming, so that the inner pipe layer, the prefabricated glass fiber tape reinforcing layer and the outer pipe layer can be completely compounded together, the overall strength is higher, more than 20% of materials can be reduced under the condition that the pipeline achieves the same strength, and the pipeline is more energy-saving and environment-friendly.
2. The inventor of the invention finds that the strength of the manufactured pipeline is obviously increased by adopting the prefabricated glass fiber tape as the reinforcing layer material of the pipeline, and the prefabricated glass fiber tape is heated to 150-220 ℃ to serve as the reinforcing layer of the prefabricated glass fiber tape, and the reinforcing layer of the prefabricated glass fiber tape is respectively welded and compounded with the inner layer of the pipeline and the outer layer of the pipeline, so that the reinforcing layer of the prefabricated glass fiber tape can be more uniformly distributed between the inner layer of the pipeline and the outer layer of the pipeline, and the overall strength of the manufactured pipeline is further stronger.
In a preferred embodiment of the present invention, the pitch of the spiral formed by winding in step (4) is 10cm or less. So set up, the atress is more dispersed between the adjacent position of heliciform, and the pipeline intensity after the shaping is higher.
As a preferred embodiment of the present invention, in the step (2), a plurality of unwinding rollers are adopted to unwind the preformed glass fiber tape, and one or more unwinding rollers are selected to unwind together according to the thickness requirement of the preformed glass fiber tape layer. Aiming at pipelines with different application requirements in the production process, the thickness of the reinforcement layer of the prefabricated glass fiber belt needs to be adjusted, one or more unwinding rollers can be selected to unwind the prefabricated glass fiber belt simultaneously according to the thickness of the reinforcement layer of the prefabricated glass fiber belt, and the operation of adjusting the thickness of the reinforcement layer of the prefabricated glass fiber belt is very convenient and fast.
As a preferred embodiment of the present invention, in the step (2), a standby unwinding roller corresponding to the plurality of unwinding rollers is further provided, and the standby unwinding roller is activated when the unwinding roller has unwound the preform glass fiber ribbon and needs to be switched or when unwinding fails. The standby unwinding roller is configured, the prefabricated and molded glass fiber belt material on the standby unwinding roller can be quickly started when needed, the production progress is not influenced, and the production efficiency is improved.
As a preferred embodiment of the present invention, the production is performed by using a multilayer clad wound pipe production apparatus comprising:
the forming part comprises a machine base, at least two extruders, a heating source, an extrusion unit and a winding forming roller, wherein the extruders are positioned on the machine base;
the unwinding part comprises a rack and a plurality of unwinding rollers positioned on the rack and is used for unwinding one or more layers of prefabricated and molded glass fiber belts of the winding pipe;
the heating source is used for heating the prefabricated molding glass fiber belt released by the unwinding roller;
the extrusion unit comprises at least two extrusion rollers which are oppositely arranged, the extrusion rollers are used for extruding a pipeline layer of the extruder and extruding a prefabricated forming glass fiber belt which is unreeled and heated by the unreeling roller, and the winding forming roller is used for winding and forming a plurality of layers of extruded materials.
Multilayer cladding winding pipe production facility of this scheme of adoption, beneficial effect lies in:
1. this scheme extrudes the inside pipe layer through two at least extruders, the pipe is outer, unreel prefabricated shaping glass fiber tape through unreeling the winding up roller, prefabricated shaping glass fiber tape is after the heating source heating, the inside pipe layer of extruding with the extruder, the pipe is outer extrudees the roller of extrusion unit and fuses, at last carry out the winding shaping on winding shaping roller, adopt the equipment of this scheme this kind of structure, can be with the inside pipe layer, prefabricated shaping glass fiber tape enhancement layer, the pipe is outer fully fused, the wholeness that combines between the pipeline multilayer is better, the intensity of the pipeline of preparation is higher.
2. The unwinding part is provided with a plurality of unwinding rollers, one or more unwinding rollers can be selected to simultaneously unwind the prefabricated and molded glass fiber belt material according to the thickness requirement of the prefabricated and molded glass fiber belt reinforcing layer in the production process, and the operation of adjusting the thickness of the prefabricated and molded glass fiber belt reinforcing layer is very convenient and fast.
And a rolling mechanism for rolling the surface of the winding part is arranged on one side of the winding forming roller of the machine base. The surface of the winding part can be rolled by the rolling mechanism, so that the inner layer of the pipe, the reinforcing layer of the prefabricated glass fiber tape, the outer layer of the pipe and the adjacent winding part are better welded, and the integrity of the pipeline is better.
As a preferred embodiment of the invention, the rolling mechanism comprises a mounting seat, an adjusting rod and a pressing roller, wherein the adjusting rod is connected to the mounting seat in a sliding manner, the mounting seat is provided with an adjusting rod locking structure, and the pressing roller is rotatably connected to one end of the adjusting rod. According to different wall thicknesses of the pipeline, the position of the adjusting rod can be adjusted, so that the pressing roller can apply proper pressure on the winding and forming part of the pipeline.
As a preferred embodiment of the present invention, the rolling mechanism is further provided with an arc-shaped shroud plate covering the outside of the pressing roller, the length of the arc-shaped shroud plate along the axial direction of the pressing roller is the same as the length of the pressing roller, the arc-shaped shroud plate is internally provided with a first cavity, the first cavity is communicated with the cooling liquid through a pipeline, one side of the arc-shaped shroud plate along the axial direction of the pressing roller is provided with a strip-shaped water outlet seam communicated with the cooling cavity, and the water outlet direction of the strip-shaped water outlet seam is tangential to the surface of the pressing roller. In the pipeline manufacture process, multilayer material twines on the winding shaping roller, the compression roller is exerted pressure outside the pipeline, the pipeline is not complete shaping yet, can produce the adhesion with the compression roller surface, through letting in the cooling water to first cavity, through the outflow of strip shape play water seam, the play water direction of strip play water seam is tangent with the compression roller surface, so the cooling water forms one deck cooling water layer on the compression roller surface, the compression roller is at the in-process on roll-in pipeline surface, can effectively alleviate the problem that produces the adhesion.
As a preferred embodiment of the invention, the middle parts of two sides of the arc-shaped shroud plate, which are vertical to the axial direction of the press roll, are rotatably connected to the adjusting rod;
a second cavity is also arranged in the arc-shaped shroud plate, the second cavity is communicated with a heat source through a pipeline, a scraper which can be attached to the surface of the compression roller is arranged on the other side of the arc-shaped shroud plate along the axial direction of the compression roller, and a row of heating holes are formed in the side of the arc-shaped shroud plate;
the adjusting structure is further arranged and comprises a tension spring and a locking piece, one end of the tension spring is connected to the outer surface of one side, away from the compression roller, of the arc-shaped shroud plate, the other end of the tension spring is connected to the mounting seat, and the tension spring can pull the arc-shaped shroud plate to rotate so that the scraper can be attached to the surface of the compression roller; the locking piece can lock the arc-shaped shroud plate at the position where the strip-shaped water outlet seam is close to the surface of the compression roller.
After using the longer time, the phenomenon of pipeline material adhesion can appear in the compression roller surface inevitable, in this scheme, loosen the locking piece, rotate through extension spring pulling arc shroud and make scraper laminating compression roller surface, simultaneously through letting in the heat source to the second cavity, like hot water, hot steam etc. discharge through one row of heating hole, to the material heating of compression roller surface's adhesion, the material of compression roller surface adhesion can be clear away to the scraper of arc shroud one side, just can clear up in process of production. It is thus clear that this scheme of adoption need not clear up after demolising the part, handles convenient and fast.
As a preferred embodiment of the invention, the locking piece is a locking hook, the locking hook is connected to the adjusting rod through a torsion spring, and a hook groove matched with the locking hook is formed in the outer surface of the side, away from the compression roller, of the arc-shaped shroud plate. The locking piece adopting the structure has simple structure and low cost.
Drawings
FIG. 1 is a schematic structural diagram of a pipe produced by an embodiment of the process for producing a glass fiber reinforced pipe according to the present invention;
FIG. 2 is another schematic diagram of the structure of a pipe made by the process of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along A-A of FIG. 2;
FIG. 4 is a schematic structural diagram of a production facility according to an embodiment of the process for manufacturing a glass fiber reinforced pipe of the present invention;
FIG. 5 is a schematic structural diagram of a rolling mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a rolling mechanism according to an embodiment of a glass fiber reinforced tube manufacturing process of the present invention
FIG. 7 is a schematic structural diagram of a rolling mechanism according to an embodiment of a glass fiber reinforced tube manufacturing process of the present invention
FIG. 8 is a schematic structural diagram of a rolling mechanism according to an embodiment of the present invention.
The reference numerals include: the device comprises a pipe inner layer 1, a prefabricated and molded glass fiber belt reinforcing layer 2, a pipe outer layer 3, a machine base 4, an extruder 5, a heating source 6, an extrusion roller 7, a machine frame 8, a winding molding roller 9, a unreeling roller 10, a standby unreeling roller 11, a mounting seat 12, an adjusting rod 13, a screw rod structure 131, a nut 132, a sliding groove 133, a pressing roller 14, an arc-shaped cover plate 15, a first cavity 151, a strip-shaped water outlet seam 152, a second cavity 153, a heating hole 154, a scraper 155, a pipeline 156, an adjusting structure 16, a tension spring 161, a locking hook 162 and a hook groove 163.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the following examples, the preformed glass fiber tape is a glass fiber tape formed by weaving glass fibers in advance, and the thickness of a single layer is preferably 0.2 to 0.5mm, and the thickness of a part of the preformed glass fiber tape is outside the above range.
The embodiments are substantially as shown in figures 1, 4 and 5 of the accompanying drawings: a preparation process of a glass fiber reinforced pipe comprises the following steps:
(1) Respectively extruding a pipe inner layer 1 and a pipe outer layer 3 by two extruders 5;
(2) Unreeling the prefabricated and molded glass fiber belt, and heating the prefabricated and molded glass fiber belt to be used as a prefabricated and molded glass fiber belt reinforcing layer 2, wherein the heating temperature is 150-220 ℃;
(3) Compounding and extruding a pipe inner layer 1, a prefabricated glass fiber belt reinforcing layer 2 and a pipe outer layer 3 to form a multi-layer composite material;
(4) Winding and forming the multilayer composite material to be spiral along the axial direction, welding adjacent parts of the spiral in the winding process, as shown in figures 2 and 3, wherein the spiral pitch formed by winding and forming is D, and D is less than or equal to 10cm, and then cooling and shaping.
In the step (2), a plurality of unwinding rollers 10 are adopted to unwind the prefabricated glass fiber belt, and one or more unwinding rollers 10 are selected to unwind together to quickly adjust the thickness of the prefabricated glass fiber belt reinforcing layer according to the thickness requirement of the prefabricated glass fiber belt reinforcing layer. In addition, a standby unwinding roller 11 corresponding to the plurality of unwinding rollers 10 is arranged, and when the unwinding rollers 10 unwind the prefabricated glass fiber belt to be switched or the unwinding fails, the standby unwinding rollers 11 are started to be quickly connected.
As shown in fig. 4 and 5, the above-mentioned preparation process is carried out by using a production apparatus of a multi-layer clad winding pipe, and comprises:
the forming part comprises a machine base 4, two extruders 5 positioned on the machine base 4, a heating source 6, an extrusion unit and a winding forming roller 9.
Unreeling the portion, unreeling the portion and including frame 8 and a plurality of unreeling roller 10 that are located frame 8 for unreeling of one deck or multilayer prefabricated shaping glass fiber tape of winding pipe, a plurality of unreeling roller 10 set up in a row in vertical, have shown in the figure to set up two rows of unreeling roller 10, the situation of every 5 unreeling roller 10, and the row number of unreeling roller 10 and the quantity of every row can increase and decrease according to the in service behavior.
In some embodiments, the stand 8 is further rotatably connected with standby unwinding rollers 11 arranged in a row in the vertical direction, and the standby unwinding rollers 11 are arranged on the unwinding roller 10 side.
The heating source 6 is used for heating the prefabricated formed glass fiber belt released by the unwinding roller 10, and the heating source 6 can be an existing industrial air heater or a continuous heating box (the heating box is internally provided with electric heating, heat conduction oil heating, fuel heating and the like).
The extrusion unit comprises at least two extrusion rollers 7 which are arranged oppositely, the extrusion rollers 7 are used for extruding a pipe inner layer 1 of the extruder 5, the unwinding roller 10 unwinds and extrudes the heated prefabricated glass fiber belt and the pipe outer layer 3, the distance between the two extrusion rollers 7 is adjustable, and the extrusion unit is suitable for pipeline production with different wall thicknesses, the structure of the adjustment adopts common prior art, in some embodiments, a plurality of pairs of extrusion rollers 7 which are arranged oppositely can be arranged, and the winding forming roller 9 is used for winding and forming a plurality of layers of extruded materials.
One side of the machine base 4, which is located on the winding forming roller 9, is provided with a rolling mechanism for rolling the surface of the winding part, as shown in fig. 5, the rolling mechanism comprises a mounting seat 12, an adjusting rod 13 and a pressing roller 14, the adjusting rod 13 is connected to the mounting seat 12 through a sliding groove 133 and a sliding rail in a matched and sliding manner, the mounting seat 12 is provided with an adjusting rod locking structure, and the pressing roller 14 is rotatably connected to one end of the adjusting rod 13. In this embodiment, the locking structure is a nut 132 and a screw structure 131, one end of the adjusting rod 13 is the screw structure 131, and the mounting base 12 is rotatably connected with the nut 132 in threaded engagement with the adjusting rod 13.
The use process of the device comprises the following steps:
extruding a tube inner layer 1 and a tube outer layer 3 respectively by using two extruders 5 of a forming part;
determining the number of unwinding rollers 10 starting an unwinding part according to the thickness of a prefabricated and molded glass fiber belt reinforcing layer 2 required by pipelines with different wall thicknesses, unwinding the prefabricated and molded glass fiber belt by using the unwinding rollers 10, and heating the prefabricated and molded glass fiber belt by using a heating source 6 to serve as the prefabricated and molded glass fiber belt reinforcing layer 2, wherein the heating temperature is 150-220 ℃;
extruding and welding the inner pipe layer 1, the prefabricated glass fiber belt reinforcing layer 2 and the outer pipe layer 3 through an extrusion roller 7 of an extrusion unit to form a multi-layer composite material;
and winding the multilayer composite material on a winding forming roller 9 for forming.
In other embodiments, as shown in fig. 6 and 7, the rolling mechanism further includes an arc-shaped shroud plate 15 covering the outside of the pressing roller 14, and the length of the arc-shaped shroud plate 15 along the axial direction of the pressing roller 14 is the same as the length of the pressing roller 14, a first cavity 151 is arranged in the arc-shaped shroud plate 15, the first cavity 151 is communicated with the cooling liquid through a pipeline 156, a strip-shaped water outlet seam 152 communicated with the cooling cavity is formed in one side of the arc-shaped shroud plate 15 along the axial direction of the pressing roller 14, and the water outlet direction of the strip-shaped water outlet seam 152 is tangential to the surface of the pressing roller 14.
In the pipeline manufacture process, multilayer material twines on winding shaping roller 9, compression roller 14 exerts pressure outside the pipeline, the pipeline is not complete shaping yet, can produce the adhesion with compression roller 14 surface, let in the cooling water through outside water pump in pipeline 156 to first cavity 151, the strip goes out water seam 152 and flows out, the play water direction of strip play water seam 152 is tangent with compression roller 14 surface, so the cooling water forms one deck cooling water layer on compression roller 14 surface, compression roller 14 is at the in-process on roll-in pipeline surface, can effectively alleviate the problem that produces the adhesion.
In other embodiments, as shown in fig. 6, 7 and 8, the arc-shaped shroud plates 15 are rotatably connected to the adjusting rods 13 perpendicular to the middle portions of both sides of the axial direction of the press roll 14; a second cavity 153 is further arranged in the arc-shaped shroud plate 15, the second cavity 153 is communicated with a heat source through a pipeline 156, a scraper 155 which can be attached to the surface of the press roll 14 is arranged on the other side of the arc-shaped shroud plate 15 along the axial direction of the press roll 14, and a row of heating holes 154 are formed in the side;
the device is also provided with an adjusting structure 16 which comprises a tension spring 161 and a locking piece, wherein one end of the tension spring 161 is connected to the outer surface of one side, far away from the compression roller 14, of the arc-shaped shroud plate 15, the other end of the tension spring 161 is connected to the mounting seat 12, and the tension spring 161 can pull the arc-shaped shroud plate 15 to rotate so that the scraper 155 can be attached to the surface of the compression roller 14; the locking piece is locking hook 162, and locking hook 162 passes through the torsional spring and connects on adjusting pole 13, and the surface of arc shroud plate 15 keeping away from compression roller 14 one side is equipped with the hook groove 163 that cooperation locking hook 162 card was gone into, and the locking piece can be with arc shroud plate 15 locking in the position that bar goes out water seam 152 and compression roller 14 surface and be close to.
After the pressing roller is used for a long time, the surface of the pressing roller 14 is inevitably adhered to a pipeline material, in the scheme, the locking piece is loosened, specifically, a force is applied to one side of the strip-shaped water outlet seam 152 on the arc-shaped cover plate 15, the locking hook 162 is pulled at the same time, the locking hook 162 is separated from the hook groove 163 of the arc-shaped cover plate 15, then the force applied to the arc-shaped cover plate 15 is loosened, the tension spring 161 pulls the arc-shaped cover plate 15 to rotate, so that the scraper 155 is attached to the surface of the pressing roller 14, meanwhile, a heat source such as hot water and hot steam is introduced into the second cavity 153, the heat source is discharged through the row of heating holes 154 on one side of the arc-shaped cover plate 15, the adhered substance on the surface of the pressing roller 14 is heated, the scraper 155 on one side of the arc-shaped cover plate 15 can remove the adhered substance on the surface of the pressing roller 14, and the cleaning can be performed in the production process. This scheme of adoption need not clear up after demolising the part, handles convenient and fast.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A preparation process of a glass fiber reinforced pipe is characterized by comprising the following steps:
(1) Respectively extruding the inner layer and the outer layer of the pipe by at least two extruders;
(2) Unreeling the prefabricated and molded glass fiber belt, and heating the glass fiber belt to be used as a prefabricated and molded glass fiber belt reinforcing layer, wherein the heating temperature is 150-220 ℃;
(3) Compounding and extruding the inner layer of the pipe, the prefabricated glass fiber belt reinforcing layer and the outer layer of the pipe to form a multi-layer composite material;
(4) Winding the multilayer composite material to form a spiral shape along the axial direction, mutually welding adjacent spiral parts in the winding process, and then cooling and shaping.
2. A process for the preparation of a glass fibre reinforced pipe according to claim 1, characterized in that: the pitch of the spiral formed by winding in the step (4) is less than or equal to 10cm.
3. A process for the preparation of a glass fibre reinforced pipe according to claim 1, characterized in that: in the step (2), a plurality of unwinding rollers are adopted to unwind the prefabricated and formed glass fiber belt, and one or more unwinding rollers are selected to unwind together according to the thickness requirement of the prefabricated and formed glass fiber belt layer.
4. A process for the preparation of a glass fibre reinforced pipe according to claim 3, characterized in that: and (3) in the step (2), standby unwinding rollers corresponding to the plurality of unwinding rollers are also configured, and when the unwinding rollers unwind the prefabricated glass fiber belt to be switched or the unwinding is in failure, the standby unwinding rollers are started.
5. The process for preparing a glass fiber reinforced pipe according to claim 3, wherein the preparation is carried out by using a multilayer cladding winding pipe production device, comprising:
the forming part comprises a machine base, at least two extruders, a heating source, an extrusion unit and a winding forming roller, wherein the extruders, the heating source, the extrusion unit and the winding forming roller are positioned on the machine base;
the unwinding part comprises a rack and a plurality of unwinding rollers positioned on the rack and is used for unwinding one or more layers of prefabricated and molded glass fiber belts of the winding pipe;
the heating source is used for heating the prefabricated molding glass fiber belt released by the unwinding roller;
the extrusion unit comprises at least two extrusion rollers which are oppositely arranged, the extrusion rollers are used for extruding a pipeline layer of the extruder and extruding a prefabricated forming glass fiber belt which is unreeled and heated by the unreeling roller, and the winding forming roller is used for winding and forming a plurality of layers of extruded materials.
6. A process for the preparation of a glass fibre reinforced pipe according to claim 5, characterized in that: and a rolling mechanism for rolling the surface of the winding part is arranged on one side of the winding forming roller of the machine base.
7. The process for preparing a glass fiber reinforced pipe according to claim 6, wherein: the roller pressing mechanism comprises a mounting seat, an adjusting rod and a pressing roller, the adjusting rod is connected to the mounting seat in a sliding mode, the mounting seat is provided with an adjusting rod locking structure, and the pressing roller is connected to one end of the adjusting rod in a rotating mode.
8. The process for preparing a glass fiber reinforced pipe according to claim 7, wherein: the rolling mechanism is further provided with an arc-shaped covering plate covering the outside of the compression roller, the arc-shaped covering plate is the same as the compression roller in length along the axial direction of the compression roller, a first cavity is arranged in the arc-shaped covering plate and is communicated with cooling liquid through a pipeline, a strip-shaped water outlet seam communicated with the cooling cavity is formed in the arc-shaped covering plate along one axial side of the compression roller, and the water outlet direction of the strip-shaped water outlet seam is tangent to the surface of the compression roller.
9. A process for the preparation of a glass fiber reinforced pipe according to claim 8, wherein: the middle parts of two sides of the arc-shaped shroud plate, which are vertical to the axial direction of the press roll, are rotatably connected to the adjusting rod;
a second cavity is also arranged in the arc-shaped shroud plate, the second cavity is communicated with a heat source through a pipeline, a scraper which can be attached to the surface of the compression roller is arranged on the other side of the arc-shaped shroud plate along the axial direction of the compression roller, and a row of heating holes are formed in the side of the arc-shaped shroud plate;
the adjusting structure is further arranged and comprises a tension spring and a locking piece, one end of the tension spring is connected to the outer surface of one side, away from the compression roller, of the arc-shaped shroud plate, the other end of the tension spring is connected to the mounting seat, and the tension spring can pull the arc-shaped shroud plate to rotate so that the scraper can be attached to the surface of the compression roller; the locking piece can lock the arc-shaped shroud plate at the position where the strip-shaped water outlet seam is close to the surface of the compression roller.
10. The process for preparing a glass fiber reinforced pipe according to claim 10, wherein: the locking piece is a locking hook, the locking hook is connected to the adjusting rod through a torsion spring, and a hook groove matched with the locking hook is formed in the outer surface of one side, away from the compression roller, of the arc-shaped shroud plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211065569.7A CN115401931A (en) | 2022-09-01 | 2022-09-01 | Preparation process of glass fiber reinforced pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211065569.7A CN115401931A (en) | 2022-09-01 | 2022-09-01 | Preparation process of glass fiber reinforced pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116001251A (en) * | 2023-03-24 | 2023-04-25 | 山东中水管道工程有限公司 | Production method and production line of wide fiber net reinforced plastic composite pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116001251A (en) * | 2023-03-24 | 2023-04-25 | 山东中水管道工程有限公司 | Production method and production line of wide fiber net reinforced plastic composite pipe |
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