CN110901033A - Core layer foaming thermoplastic plastic pipe interface processing method and product - Google Patents
Core layer foaming thermoplastic plastic pipe interface processing method and product Download PDFInfo
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- CN110901033A CN110901033A CN201911121324.XA CN201911121324A CN110901033A CN 110901033 A CN110901033 A CN 110901033A CN 201911121324 A CN201911121324 A CN 201911121324A CN 110901033 A CN110901033 A CN 110901033A
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- Prior art keywords
- pipe
- wall
- socket
- foamed thermoplastic
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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
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
- B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
-
- 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
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention relates to a method for processing an interface of a core layer foamed thermoplastic plastic pipe, which comprises the following steps: s1, processing one end of the pipe into a socket; and S2, processing the other end of the pipe into a socket. The processing method of the interface of the core layer foamed thermoplastic plastic pipe utilizes a simpler process and less equipment investment to process one end of the pipe into a socket and the other end of the pipe into a spigot, realizes socket connection of the core layer foamed thermoplastic pipe, and has low cost and stable connection.
Description
Technical Field
The invention relates to the technical field of pipe processing, in particular to a method for processing a core layer foamed thermoplastic plastic pipe interface and a product.
Background
The foamed thermoplastic pipe with the core layer consists of three layers, including inner layer, outer layer and middle layer, and has the features of small weight and high rigidity compared with solid wall pipe. The connecting modes of the heat-shrinkable belt are mainly three, namely socket joint connection of a sleeve, welding joint connection of the sleeve and heat-shrinkable belt connection of the sleeve. The production equipment limits the investment of equipment and moulds for producing large-size sleeves, and the equipment and moulds are economic and cost-effective, difficult to connect and construct and high in cost. The mode of welding the joint also needs to be put into large-scale equipment to produce the joint, and needs manual welding, the input is large, the efficiency is low, and the same economic value is not high. The heat shrinkage connection needs to sleeve a heat shrinkage sleeve on an interface after the pipes are connected in order, then the surface of the heat shrinkage sleeve is baked by fire, and the pipe interface is tightly wrapped by shrinkage force of the heat shrinkage sleeve to realize connection.
Disclosure of Invention
The invention provides a method and a product for processing a core layer foamed thermoplastic plastic pipe joint, aiming at solving the problems of difficult processing, high cost, low connection reliability and low efficiency of the existing connection mode of a core layer foamed thermoplastic plastic pipe.
In order to solve the technical problems, the invention provides the following technical scheme:
a core layer foaming thermoplastic plastic pipe interface processing method comprises the following steps:
s1: machining one end of a pipe into a socket, wherein the method comprises the following three steps:
s1.1: heating the inner wall of the pipe by using an inner wall heating device;
s1.2: expanding the inner wall of the heated and softened pipe to the size of the flaring die by using the flaring die after heating;
s1.3: waiting for the pipe to be cooled, and finishing the processing of the socket of the pipe;
s2: the other end of the pipe is processed into a socket, which comprises the following three steps:
s2.1: moving one end of the pipe processed into a socket into an external heating device to heat the outer wall of the pipe;
s2.2: after heating, compressing the outer wall of the heated and softened pipe to the size of a cavity of a pressing mould by using the pressing mould;
s2.3: and (5) waiting for the pipe to be cooled, loosening the pressing die and finishing the processing of the socket of the pipe.
The invention utilizes the simpler process and less equipment investment to process one end of the pipe into the bell mouth and the other end into the spigot mouth, realizes the socket connection of the core layer foamed thermoplastic pipe, and has low cost and stable connection.
Further, in step S1.1, the following steps are included:
s1.1.1: processing the pipe into one end of a socket, and clamping and fixing the end by using an external clamp;
s1.1.2: move inner wall heating device and stretch into the tubular product inner wall, heat the tubular product inner wall, use outer fixture fixed, stability is better.
Further, in step S1.2, the following steps are included:
s1.2.1: removing the inner wall heating device after heating;
s1.2.2: the flaring die is stretched into the inner wall of the pipe, then the flaring mechanism of the flaring die is expanded, the inner wall of the pipe which is heated and softened is expanded to the size of the flaring die, the plasticity after the thermoplastic plastic is heated is utilized, the pipe is better processed, and the processing difficulty is small.
Further, in step S2.2, the following steps are included:
s1.3.1: after the pipe is cooled, the flaring die is contracted, and the pipe is moved away;
s1.3.2: the outer clamp is loosened to complete the processing of the pipe bellmouth, the whole process is very simple, and the processing difficulty is small.
Further, in step S2, the method includes the following steps:
s2.2.1: after heating, the pipe is moved away from the heating device;
s2.2.2: the pipe is inserted into a pressing die, the pressing die shrinks and presses the outer wall of the pipe, the outer wall of the pipe which is heated and softened is compressed to the size of a cavity of the pressing die, the other end of the pipe is processed into a socket by a heating and compressing method by utilizing the plasticity of the heated thermoplastic plastic and the compressibility of a foaming layer according to the material characteristics and the structural characteristics of a product, and the processing mode is simple, low in cost and high in efficiency.
Further, the sequence of step S1 and step S2 can be interchanged, and the machining can be performed according to circumstances, so that the machining method is simple and the machining efficiency is high.
The core layer foamed thermoplastic plastic pipe obtained by the interface processing method of the core layer foamed thermoplastic plastic pipe comprises a main pipe body, a socket and a socket; the socket and the spigot are respectively arranged at two ends of the main pipe body, the connection between the pipes is realized by the connection between the sockets, the mode is simple, and the connection is stable.
Furthermore, the socket inner wall and the socket outer wall are all embedded with sealing rubber rings, so that the connection is stable.
Furthermore, the main pipe body comprises an inner layer, a core layer and an outer layer which are sequentially distributed from inside to outside, the inner layer and the outer layer are solid wall layers, and the core layer is a foaming layer, so that the main pipe body is light in weight, high in rigidity and capable of being better used.
Compared with the prior art, the invention has the following beneficial effects:
according to the material characteristics and the product structure characteristics of the product, one end of the pipe is processed into a socket by using the plasticity of the heated thermoplastic plastic and the compressibility of the foaming layer and a heating and compressing method, and the other end of the pipe is processed into a socket to realize the socket joint connection between the core layer foamed thermoplastic pipes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the interface processing method of a core layer foamed thermoplastic pipe according to the present invention when performing step S1;
fig. 2 is a schematic structural diagram of the interface processing method of a core layer foamed thermoplastic pipe according to the present invention when performing step S2;
fig. 3 is a schematic structural view of a core layer foamed thermoplastic pipe according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention comprises the following steps:
as shown in fig. 1-2, a method for processing an interface of a core layer foamed thermoplastic pipe comprises the following steps:
s1: machining one end of a pipe into a socket, wherein the method comprises the following three steps:
s1.1: heating the inner wall of the pipe by using an inner wall heating device;
s1.2: expanding the inner wall of the heated and softened pipe to the size of the flaring die by using the flaring die after heating;
s1.3: waiting for the pipe to be cooled, and finishing the processing of the socket of the pipe;
s2: the other end of the pipe is processed into a socket, which comprises the following three steps:
s2.1: moving one end of the pipe processed into a socket into an external heating device to heat the outer wall of the pipe;
s2.2: after heating, compressing the outer wall of the heated and softened pipe to the size of a cavity of a pressing mould by using the pressing mould;
s2.3: and (5) waiting for the pipe to be cooled, loosening the pressing die and finishing the processing of the socket of the pipe.
The invention utilizes the simpler process and less equipment investment to process one end of the pipe into the bell mouth and the other end into the spigot mouth, realizes the socket connection of the core layer foamed thermoplastic pipe, and has low cost and stable connection.
In this embodiment, in step S1.1, the following steps are included:
s1.1.1: processing the pipe into one end of a socket, and clamping and fixing the end by using an external clamp;
s1.1.2: move inner wall heating device and stretch into the tubular product inner wall, heat the tubular product inner wall, use outer fixture fixed, stability is better.
In this embodiment, in step S1.2, the following steps are included:
s1.2.1: removing the inner wall heating device after heating;
s1.2.2: the flaring die is stretched into the inner wall of the pipe, then the flaring mechanism of the flaring die is expanded, the inner wall of the pipe which is heated and softened is expanded to the size of the flaring die, the plasticity after the thermoplastic plastic is heated is utilized, the pipe is better processed, and the processing difficulty is small.
In this embodiment, in step S2.2, the following steps are included:
s1.3.1: after the pipe is cooled, the flaring die is contracted, and the pipe is moved away;
s1.3.2: the outer clamp is loosened to complete the processing of the pipe bellmouth, the whole process is very simple, and the processing difficulty is small.
In the present embodiment, in step S2, the following steps are included:
s2.2.1: after heating, the pipe is moved away from the heating device;
s2.2.2: the pipe is inserted into a pressing die, the pressing die shrinks and presses the outer wall of the pipe, the outer wall of the pipe which is heated and softened is compressed to the size of a cavity of the pressing die, the other end of the pipe is processed into a socket by a heating and compressing method by utilizing the plasticity of the heated thermoplastic plastic and the compressibility of a foaming layer according to the material characteristics and the structural characteristics of a product, and the processing mode is simple, low in cost and high in efficiency.
In the present embodiment, the sequence of step S1 and step S2 can be interchanged, and the machining can be performed according to circumstances, so that the machining method is simple and the machining efficiency is high.
As shown in fig. 3, a core layer foamed thermoplastic plastic pipe obtained by using the above method for processing a mouthpiece of a core layer foamed thermoplastic plastic pipe includes a main pipe body, a socket and a spigot; the socket and the spigot are respectively arranged at two ends of the main pipe body, the connection between the pipes is realized by the connection between the sockets, the mode is simple, and the connection is stable.
In this embodiment, the socket inner wall and the socket outer wall are embedded with the sealing rubber ring, and the connection is stable.
In this embodiment, the main pipe body includes inlayer, sandwich layer and the skin that distributes from inside to outside in proper order, and inlayer and skin are solid wall layer, and the sandwich layer is the foaming layer, and weight is little, and the rigidity is high, can use better.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A core layer foaming thermoplastic plastic pipe interface processing method is characterized by comprising the following steps:
s1: machining one end of a pipe into a socket, wherein the method comprises the following three steps:
s1.1: heating the inner wall of the pipe by using an inner wall heating device;
s1.2: expanding the inner wall of the heated and softened pipe to the size of the flaring die by using the flaring die after heating;
s1.3: waiting for the pipe to be cooled, and finishing the processing of the socket of the pipe;
s2: the other end of the pipe is processed into a socket, which comprises the following three steps:
s2.1: moving one end of the pipe processed into a socket into an external heating device to heat the outer wall of the pipe;
s2.2: after heating, compressing the outer wall of the heated and softened pipe to the size of a cavity of a pressing mould by using the pressing mould;
s2.3: and (5) waiting for the pipe to be cooled, loosening the pressing die and finishing the processing of the socket of the pipe.
2. A method of interfitting a foamed thermoplastic tube core as claimed in claim 1, wherein in step S1.1, the method comprises the steps of:
s1.1.1: processing the pipe into one end of a socket, and clamping and fixing the end by using an external clamp;
s1.1.2: and moving the inner wall heating device to extend into the inner wall of the pipe to heat the inner wall of the pipe.
3. A method of interfitting a foamed thermoplastic tube core as claimed in claim 2, wherein in step S1.2, the method comprises the steps of:
s1.2.1: removing the inner wall heating device after heating;
s1.2.2: and stretching the flaring die into the inner wall of the pipe, expanding a flaring mechanism of the flaring die, and expanding the heated and softened inner wall of the pipe to the size of the flaring die.
4. A method of interfitting a foamed thermoplastic tube core as claimed in claim 3, wherein in step S1.3, the method comprises the steps of:
s1.3.1: after the pipe is cooled, the flaring die is contracted, and the pipe is moved away;
s1.3.2: and (5) loosening the outer clamp to finish the processing of the pipe bellmouth.
5. A method of interfitting a foamed thermoplastic tube core as claimed in claim 1, wherein in step S2.2, the method comprises the steps of:
s2.2.1: after heating, the pipe is moved away from the heating device;
s2.2.2: the pipe is inserted into a pressing die, the pressing die shrinks and presses the outer wall of the pipe, and the outer wall of the pipe which is heated and softened is compressed to the size of a cavity of the pressing die.
6. The method for interfitting a core foamed thermoplastic tube according to any one of claims 1 to 5, wherein the sequence of steps S1 and S2 can be interchanged.
7. A foamed thermoplastic tube with a core layer obtained by the method for processing an interface of a foamed thermoplastic tube with a core layer according to claim 6, comprising a main tube body, a socket and a spigot; the bellmouth and the socket are respectively arranged at two ends of the main pipe body.
8. A core foamed thermoplastic pipe according to claim 6 wherein both the socket inner wall and the socket outer wall are embedded with a sealing rubber ring.
9. A core layer foamed thermoplastic pipe according to claim 6, wherein the main pipe body comprises an inner layer, a core layer and an outer layer which are distributed in sequence from inside to outside, both the inner layer and the outer layer are solid wall layers, and the core layer is a foamed layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911121324.XA CN110901033B (en) | 2019-11-15 | 2019-11-15 | Core layer foaming thermoplastic plastic pipe interface processing method and product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911121324.XA CN110901033B (en) | 2019-11-15 | 2019-11-15 | Core layer foaming thermoplastic plastic pipe interface processing method and product |
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| Publication Number | Publication Date |
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| CN110901033A true CN110901033A (en) | 2020-03-24 |
| CN110901033B CN110901033B (en) | 2022-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941860A (en) * | 2020-08-18 | 2020-11-17 | 合肥同源化工科技有限公司 | Manufacturing process of aluminum foil rubber and plastic heat-insulation sleeve |
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| CN111941860B (en) * | 2020-08-18 | 2022-04-05 | 山东聚合管业有限公司 | Manufacturing process of aluminum foil rubber and plastic heat-insulation sleeve |
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| Publication number | Publication date |
|---|---|
| CN110901033B (en) | 2022-03-04 |
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