CN111300793A - RTP tubular product cladding mould - Google Patents
RTP tubular product cladding mould Download PDFInfo
- Publication number
- CN111300793A CN111300793A CN201911329013.2A CN201911329013A CN111300793A CN 111300793 A CN111300793 A CN 111300793A CN 201911329013 A CN201911329013 A CN 201911329013A CN 111300793 A CN111300793 A CN 111300793A
- Authority
- CN
- China
- Prior art keywords
- connecting flange
- extruder
- cladding
- vacuum chamber
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005253 cladding Methods 0.000 title claims abstract description 38
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000011247 coating layer Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 12
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- 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
-
- 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
- B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
- B29C48/146—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration in the die
-
- 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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an RTP pipe cladding die which comprises a cladding piece inner pipe, a mouth die, a core die, a converging sleeve, a spiral distributor, an inner heater, a pressing plate, a connecting flange, an extruder connecting flange and a vacuum chamber, wherein the inner pipe is arranged in the cladding piece inner pipe; the mouth mold and the core mold are both horn-shaped, the core mold is arranged below the inner side of the mouth mold, the converging sleeve is arranged below the mouth mold, and the core mold, the spiral distributor and the connecting flange form a closed vacuum chamber; the inner pipe penetrates into a vacuum chamber of the coating die through a connecting flange, and meanwhile, the coating layer raw material enters the vacuum chamber through an extruder connecting flange connected with an extruder and is coated on the inner pipe. The technical scheme of the invention has simple structure, can tightly combine the cladding material with the inner pipe, has good cladding effect, improves the production efficiency and ensures the continuous and stable production.
Description
Technical Field
The invention belongs to the field of reinforced thermoplastic pipe processing equipment, and particularly relates to an RTP pipe cladding die.
Background
The Reinforced Thermoplastic Pipe (RTP) is developed in the early nineties of the last century and mainly comprises a three-layer structure, wherein the inner layer and the outer layer are made of materials above PE80, and the middle layer is a reinforced belt formed by compounding reinforced materials. Compared with the common plastic composite pipe, the RTP has the characteristics of high pressure resistance, good toughness, convenience in installation and laying, low comprehensive cost and the like, realizes the roll packaging transportation and construction of medium-large-diameter high-pressure pipes, has long continuous length of each roll, greatly reduces the connection joints between the pipes, greatly improves the construction speed compared with a fixed-length pipeline, greatly reduces the transportation and construction cost, and is widely applied to the fields of petroleum transportation and natural gas transportation. At present, RTP pipes produced by the prior art are mostly prepared by coating thermoplastic inner pipes with coating materials, and one of key parts for manufacturing the RTP pipes is a production mould. The RTP pipe coating die in the prior art mainly has the following technical defects that on one hand, the coating effect is poor, and after the RTP pipe coating die is used for a period of time, a coating layer is easy to separate from an inner pipe; on the other hand, the production speed is further limited to be improved, so that the improvement of the production efficiency is also influenced.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an RTP tube cladding mold, which overcomes the disadvantages of the prior art, has a simple structure, can tightly bond a cladding material with an inner tube, has a good cladding effect, improves production efficiency, and ensures continuous and stable production.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a RTP tubular product cladding mould, includes cladding piece inner tube, its characterized in that: the pipe cladding die comprises a mouth die, a core die, a converging sleeve, a spiral distributor, an internal heater, a pressing plate, a connecting flange, an extruder connecting flange and a vacuum chamber;
the mouth mold and the core mold are both horn-shaped, the core mold is arranged below the inner side of the mouth mold, the converging sleeve is arranged below the mouth mold, the mouth mold is fixedly connected with the converging sleeve through a pressing plate, the spiral distributor is cylindrical and is arranged inside the converging sleeve, the lower end of the spiral distributor is fixedly connected with the converging sleeve, the connecting flange is arranged below the spiral distributor, and the core mold, the spiral distributor and the connecting flange form a closed vacuum chamber; an inner heater is arranged on the side wall of the vacuum chamber;
an opening is formed in the middle of the upper end of the mouth mold, a cladding part outlet is formed in the upper end of the core mold, a vacuum pump connecting port is formed in the side wall of the connecting flange, and the vacuum pump is externally connected with the vacuum pump through the vacuum pump connecting port;
the extruder connecting flange is arranged on the side wall of the confluence sleeve, one end of the extruder connecting flange is connected with the extruder, and the other end of the extruder connecting flange is connected with the side wall of the confluence sleeve; the raw material of the coating layer enters a vacuum chamber through an extruder connecting flange connected with an extruder to be coated on the inner pipe.
And the side wall of the connecting flange is also provided with a vacuum meter for measuring the vacuum degree in the vacuum chamber.
In the technical scheme, when the vacuum die works, the vacuum chamber is pumped into a vacuum state by the vacuum pump connected with the vacuum pump connector, the vacuum degree in the vacuum chamber is controlled by the vacuum meter on the connecting flange, when the vacuum condition is achieved, the inner pipe is pulled by the tractor and penetrates into the vacuum chamber of the cladding die through the connecting flange, meanwhile, the cladding material enters the vacuum chamber from the extruder through the connecting flange of the extruder, the vacuum chamber is heated by the inner heater, the cladding material is tightly combined with the inner pipe at the core die, and finally the cladding material is pulled out through the cladding piece outlet at the upper end of the core die. The invention overcomes the defects of the prior art, has simple structure, can tightly combine the cladding material with the inner pipe, has good cladding effect, improves the production efficiency and ensures the continuous and stable production.
Drawings
FIG. 1 is a front view of an RTP tube cladding mold of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural diagram of a die in an RTP pipe cladding die of the present invention;
FIG. 5 is a schematic structural diagram of a core mold in an RTP pipe cladding mold according to the present invention;
fig. 6 is a schematic structural diagram of a spiral distributor in an RTP tube cladding mold according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, an RTP tube cladding mold according to the present invention is further described in detail below with reference to the drawings and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As can be seen from fig. 1 to 6, an RTP tube coating mold of the present embodiment includes a coating inner tube 10, a die 1, a core mold 2, a flow-joining sleeve 3, a spiral distributor 4, an internal heater 5, a pressure plate 6, a connecting flange 7, an extruder connecting flange 8, and a vacuum chamber 9.
As can be seen from fig. 3, 4 and 5, the die 1 and the core 2 of this embodiment are both in a horn shape, the core 2 is installed below the inner side of the die 1, the collecting sleeve 3 of this embodiment is installed below the die 1, the die 1 is fixedly connected with the collecting sleeve 3 through the pressing plate 6, the spiral distributor 4 of this embodiment is in a cylindrical shape and is installed inside the collecting sleeve 3, the lower end of the spiral distributor 4 is fixedly connected with the collecting sleeve 3, the connecting flange 7 of this embodiment is installed below the spiral distributor 4, and the core 2, the spiral distributor 4 and the connecting flange 7 of this embodiment form a closed vacuum chamber 9; the side wall of the vacuum chamber 9 is provided with an internal heater 5 for heating the vacuum chamber 9.
The mouth mold 1 of the present embodiment is provided with an opening 11 at the upper end thereof, the core mold 2 is provided with a covering outlet 21 at the upper end thereof, and the connecting flange 7 of the present embodiment is provided with a vacuum pump connecting port 71 on the side wall thereof, and is externally connected to a vacuum pump through the vacuum pump connecting port 71. The connecting flange 7 of this embodiment is also provided with a vacuum gauge 72 on the side wall thereof for measuring the degree of vacuum in the vacuum chamber 9.
An extruder connecting flange 8 of the embodiment is installed on the side wall of the confluence sleeve 3, one end of the extruder connecting flange 8 is connected with an extruder, and the other end is connected with the side wall of the confluence sleeve 3; the raw material of the coating layer enters a vacuum chamber 9 through an extruder connecting flange 8 connected with an extruder and is coated on an inner pipe 10.
In this embodiment, during operation, the vacuum pump connected to the vacuum pump connection port 71 first vacuums the vacuum chamber 9, and the vacuum gauge 72 on the connection flange 7 is used to control the vacuum degree in the vacuum chamber 9, when the vacuum condition is reached, the inner tube 10 is drawn by the drawing machine and penetrates into the vacuum chamber 9 of the cladding mold through the connection flange 7, and meanwhile, the cladding material enters the vacuum chamber 9 through the extruder connection flange 8 by the extruder, and is heated by the internal heater 5, the cladding material is tightly combined with the inner tube 10 at the core mold 2, and finally is drawn out through the cladding outlet 21 at the upper end of the core mold 2. This embodiment simple structure can make cladding material and inner tube combine closely, and the cladding is effectual, has improved production efficiency, has guaranteed the continuous stable of production and has gone on.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. An RTP pipe cladding mould, includes cladding inner tube (10), its characterized in that: the pipe cladding die comprises a mouth die (1), a core die (2), a confluence sleeve (3), a spiral distributor (4), an internal heater (5), a pressing plate (6), a connecting flange (7), an extruder connecting flange (8) and a vacuum chamber (9);
the mouth mold (1) and the core mold (2) are both horn-shaped, the core mold (2) is installed below the inner side of the mouth mold (1), the converging sleeve (3) is installed below the mouth mold (1), the mouth mold (1) is fixedly connected with the converging sleeve (3) through a pressing plate (6), the spiral distributor (4) is cylindrical and is installed on the inner side of the converging sleeve (3), the lower end of the spiral distributor (4) is fixedly connected with the converging sleeve (3), the connecting flange (7) is installed below the spiral distributor (4), and the core mold (2), the spiral distributor (4) and the connecting flange (7) form a closed vacuum chamber (9); an inner heater (5) is arranged on the side wall of the vacuum chamber (9);
an opening (11) is formed in the middle of the upper end of the mouth mold (1), a cladding part outlet (21) is formed in the upper end of the core mold (2), a vacuum pump connecting port (71) is formed in the side wall of the connecting flange (7), and a vacuum pump is externally connected through the vacuum pump connecting port (71);
the extruder connecting flange (8) is arranged on the side wall of the converging sleeve (3), one end of the extruder connecting flange (8) is connected with the extruder, and the other end of the extruder connecting flange is connected with the side wall of the converging sleeve (3); the raw material of the coating layer enters a vacuum chamber (9) through an extruder connecting flange (8) connected with an extruder and is coated on an inner pipe (10).
2. An RTP tube cladding die according to claim 1, wherein: and a vacuum meter (10) is further mounted on the side wall of the connecting flange (7) and used for measuring the vacuum degree in the vacuum chamber (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329013.2A CN111300793A (en) | 2019-12-20 | 2019-12-20 | RTP tubular product cladding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329013.2A CN111300793A (en) | 2019-12-20 | 2019-12-20 | RTP tubular product cladding mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111300793A true CN111300793A (en) | 2020-06-19 |
Family
ID=71150760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911329013.2A Pending CN111300793A (en) | 2019-12-20 | 2019-12-20 | RTP tubular product cladding mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111300793A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486016A (en) * | 1973-09-26 | 1977-09-14 | Mitsui Petrochemical Ind | Method of and apparatus for treating the outer surface and inner surface of a pipe of a thermoplastic resinous material produced by extrusion |
| CN2931078Y (en) * | 2006-06-06 | 2007-08-08 | 施经东 | Vacuum outer cover co-squeeze die |
| CN205202141U (en) * | 2015-11-18 | 2016-05-04 | 郁世超 | Take vacuum -exhaust's effective cladding mould of hot winding |
| CN106493965A (en) * | 2016-10-21 | 2017-03-15 | 北京化工大学 | A kind of continuously elongated device and method for strengthening composite plastic pipe |
| CN110421819A (en) * | 2019-07-23 | 2019-11-08 | 南昌大学 | A kind of wire and cable clad extrusion die and method |
| CN211492765U (en) * | 2019-12-20 | 2020-09-15 | 安徽巴瑞挤出设备有限公司 | RTP tubular product cladding mould |
-
2019
- 2019-12-20 CN CN201911329013.2A patent/CN111300793A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486016A (en) * | 1973-09-26 | 1977-09-14 | Mitsui Petrochemical Ind | Method of and apparatus for treating the outer surface and inner surface of a pipe of a thermoplastic resinous material produced by extrusion |
| CN2931078Y (en) * | 2006-06-06 | 2007-08-08 | 施经东 | Vacuum outer cover co-squeeze die |
| CN205202141U (en) * | 2015-11-18 | 2016-05-04 | 郁世超 | Take vacuum -exhaust's effective cladding mould of hot winding |
| CN106493965A (en) * | 2016-10-21 | 2017-03-15 | 北京化工大学 | A kind of continuously elongated device and method for strengthening composite plastic pipe |
| CN110421819A (en) * | 2019-07-23 | 2019-11-08 | 南昌大学 | A kind of wire and cable clad extrusion die and method |
| CN211492765U (en) * | 2019-12-20 | 2020-09-15 | 安徽巴瑞挤出设备有限公司 | RTP tubular product cladding mould |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |