CN103786326A - Mold for manufacturing double-layer pipe fitting and manufacturing method of double-layer pipe fitting - Google Patents
Mold for manufacturing double-layer pipe fitting and manufacturing method of double-layer pipe fitting Download PDFInfo
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- CN103786326A CN103786326A CN201410013163.3A CN201410013163A CN103786326A CN 103786326 A CN103786326 A CN 103786326A CN 201410013163 A CN201410013163 A CN 201410013163A CN 103786326 A CN103786326 A CN 103786326A
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- pipe fitting
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
- B29C48/9185—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the material
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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
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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
- B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
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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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
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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
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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
- B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
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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
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
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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
- B29C48/92—Measuring, controlling or regulating
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/913—Cooling of hollow articles of tubular films externally
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting 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
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a mold for manufacturing a double-layer pipe fitting. The mold is provided with a feed end and a pipe discharge end, wherein raw materials can be injected from the feed end, and the pipe discharge end is capable of outputting the pipe fitting. The mold comprises an inner core, a shell and a plurality of middle strips, wherein the inner core is cylindrical; the shell surrounds the outer part of the inner core; the shell and the inner core are coaxially arranged at an interval; the plurality of middle strips are distributed at intervals along the peripheral direction of the shell, each middle strip comprises an extension part and a connecting part, the extension parts, the inner core and the shell are arranged at intervals, and the connecting parts are used for connecting the extension parts and the inner wall of the shell, and the extension parts of the middle strips, the inner core and the shell are kept flush at the pipe discharge end of the mold. The invention also discloses a manufacturing method of the double-layer pipe fitting. According to the technical scheme, the middle strips of the mold are used for ensuring that an inner pipe and an outer pipe of the manufactured double-layer pipe fitting are connected to each other by connecting strips, and thus the manufacturing of the double-layer pipe fitting is possible.
Description
Technical field
The present invention relates to pipe fitting production field, particularly, relate to a kind of manufacture method of mould and the double-deck pipe fitting of manufacturing double-deck pipe fitting.
Background technology
At present, in building industry, the use of tubing is greatly universal, major part is individual layer pipe fitting in the market, but because the soundproof effect of individual layer pipe fitting is not very desirable, and quality is hard only, split place's pipe fitting just useless, mostly use in the market thickening tubing or change raw material and solve this problem, but can cause the transportation problems such as inconvenient waste of material is too much, expected afterwards solving the problems referred to above by the use of double-deck pipe fitting, but double-deck pipe fitting create a difficult problem.
Summary of the invention
The object of the invention is to overcome the problem that can not manufacture double-deck pipe fitting, a kind of mould of manufacturing double-deck pipe fitting is provided.
To achieve these goals, the invention provides a kind of mould of manufacturing double-deck pipe fitting, have the feed end that allows raw material to inject, and can export the pipe end that of pipe fitting, described mould comprises: inner core, and this inner core is column; Shell, outside and described inner core that this shell is looped around described inner core arrange coaxially at intervals; And multiple central strip, the plurality of central strip along the circumferential direction of described shell spaced apart distribute, described in each, central strip comprises the extension arranging at intervals with described inner core and shell, and by the connecting portion connected to one another inwall of described extension and described shell; Wherein, the extension of described central strip, inner core and shell keep flushing at the pipe end that goes out of described mould.
Preferably, the compartment between the extension of adjacent two described central strip distributes along the radial direction of described inner core and shell.
Preferably, the inwall of the extension of described central strip and the outer wall of described inner core and described shell keeps the distance substantially equating.
Preferably, on the lateral wall of described inner core, offer Baltimore groove along the axial direction of described inner core.
Preferably, on described inner core, be connected with and the coaxial screw rod for driving described inner core to rotate arranging of described inner core.
The present invention also provides a kind of manufacture method of double-deck pipe fitting, and described manufacture method comprises: S101, plastifies raw material; S102, will be extruded into double-deck pipe fitting by above-mentioned mould through the material of plasticizing; S103, carries out cooling processing to described double-deck pipe fitting.
Preferably, be connected with and the coaxial screw rod for driving inner core to rotate arranging of inner core on inner core, in step S102, screw rod can drive inner core to rotate on the inwall with the pipe fitting in manufacturing and form spirality projection.
Preferably, the temperature of plasticizing is 170-210 ℃, and preferably, the temperature of plasticizing is 180-200 ℃.
Preferably, described cooling method comprises the first cooling processing and the second cooling processing, the method of described the first cooling processing is: the double-deck pipe fitting that described mould is extruded be placed at 70-90 ℃, carry out cooling, preferably, the double-deck pipe fitting that described mould is extruded be placed at 75-85 ℃, carry out cooling; The method of described the second cooling processing is: the double-deck pipe fitting that described mould is extruded be placed at 30-50 ℃, carry out cooling, preferably, the double-deck pipe fitting that described mould is extruded be placed at 35-45 ℃, carry out cooling.
Further preferably, described raw material are selected from following any one compound: polypropylene, polyethylene and poly 1-butene.
Pass through technique scheme, the present invention can be extruded into double-deck pipe fitting by the design of described mould, the central strip of described mould makes can have connection strap to connect between the inner and outer tubes of produced double-deck pipe fitting, described mould has solved the problem that can not manufacture double-deck pipe fitting owing to there is no mould, becomes possibility thereby make to manufacture double-deck pipe fitting.
Other features and advantages of the present invention are described in detail the specific embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with the specific embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of mould of manufacturing double-deck pipe fitting provided by the invention;
Fig. 2 is the structural section figure of a kind of mould of manufacturing double-deck pipe fitting provided by the invention.
Description of reference numerals
1 central strip 2 shells
3 inner core 4 screw rods
5 Baltimore groove 11 extensions
12 connecting portions.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
To achieve these goals, the invention provides a kind of mould of manufacturing double-deck pipe fitting, Fig. 1 is the structural representation of a kind of mould of manufacturing double-deck pipe fitting provided by the invention, and Fig. 2 is the structural section figure of a kind of mould of manufacturing double-deck pipe fitting provided by the invention.As shown in Figure 1, the invention provides a kind of mould of manufacturing double-deck pipe fitting, have the feed end that allows raw material to inject, and can export the pipe end that of pipe fitting, described mould comprises: inner core 3, and this inner core 3 is column; Shell 2, outside and described inner core 3 that this shell 2 is looped around described inner core 3 arrange coaxially at intervals, and shell 2 and inner core 3 are columnar member, and shell 2 is set in the outside of inner core 3; And multiple central strip 1, the plurality of central strip 1 along the circumferential direction of described shell 2 spaced apart distribute, described in each, central strip 1 comprises the extension 11 arranging at intervals with described inner core 3 and shell 2, with by the connecting portion 12 connected to one another inwall of described extension 11 and described shell, described connection can for welding; Wherein, the extension 11 of described central strip 1, inner core 3 and shell 2 keep flushing at the pipe end that goes out of described mould, and concordant extension 11, inner core 3 and the shell 2 that is further understood that central strip 1 of described end face ends on the same cross section of mould.Like this, while using mould of the present invention to carry out injection moulding, cavity between the inwall of the outer wall of inner core 3 and central strip 1 can be extruded and form the inner tube of double-deck pipe fitting, and cavity between the outer wall of central strip 1 and the inwall of shell 2 can be extruded the outer tube that forms double-deck pipe fitting.And the cavity that the compartment between two adjacent central strip 1 forms can be extruded the connecting portion forming between inner and outer tubes.
Pass through technique scheme, the present invention can be extruded into double-deck pipe fitting by the design of described mould, the central strip 1 of described mould makes can connect between the inner and outer tubes of produced double-deck pipe fitting, described mould has solved the problem that can not manufacture double-deck pipe fitting owing to there is no mould, becomes possibility thereby make to manufacture double-deck pipe fitting.
Preferably, the compartment between the extension 11 of adjacent two described central strip 1 distributes along the radial direction of described inner core 3 and shell 2.Because the compartment between the extension 11 of adjacent two described central strip 1 can form the connecting portion of inner and outer tubes after injection moulding completes, therefore, in the present embodiment, the connecting portion of the inner and outer tubes of product pipe fitting distributes the radial direction along described inner core 3 and shell 2.That is to say, the force direction that is subject to of the connecting portion of the connection inner and outer tubes of product pipe fitting is the radial direction by the center of circle, makes the connection of inner and outer tubes more firm.
Further preferably, described central strip 1 is L-shaped, as shown in Figure 2, comprise: extension 11 and connecting portion 12, wherein, described connecting portion 12 is fixed in the inwall of described shell 2 as the minor face of " L " shape, the long limit of 11 conducts of extension " L " shape and inner core 3 and shell 2 arrange at intervals and extend along the axial direction of inner core 3 and shell 2.Extension 11, inner core 3 and the shell 2 of described central strip 1 keeps flushing at the pipe end that goes out of described mould, thereby product pipe fitting can be deviate from for default double-decker going out pipe end.
Preferably, multiple described central strip 1 distribute equably along the circumferential direction of described shell 2.Like this design make the connection inner and outer tubes of product pipe fitting multiple connecting portions stressed evenly, thereby double-deck pipe fitting is difficult for damaging.
Preferably, the inwall of the extension 11 of described central strip 1 and the outer wall of described inner core 3 and described shell 2 keeps the distance substantially equating.Make like this thickness of inner and outer tubes of the double-deck pipe fitting producing substantially the same.Certainly, the extension 11 of central strip 1 also can be set to have different spacing from the outer wall of described inner core 3 and the inwall of described shell 2, and like this, the thickness of the inner and outer tubes of the double-deck pipe fitting producing is also different.Can choose according to actual needs the embodiment through distortion, but various embodiment all falls into protection scope of the present invention.
Preferably, on the lateral wall of described inner core 3, offer Baltimore groove 5 along the axial direction of described inner core 3.Described Baltimore groove 5 can be set to V-shaped groove.The design of described Baltimore groove 5 is in order to manufacture projection on the madial wall of described double-deck pipe fitting, to make bimetallic tube part have inner noise-reducing structure.And this bulge-structure also can be used as the reinforcement of inner tube, the intensity of inner tube is played a role in improving.
Preferably, on described inner core 3, be connected with and the screw rod 4 for driving described inner core 3 to rotate of the coaxial setting of described inner core 3, described affixed can be for using screw carry out affixed.In injection moulding process, can rotate by the inner core 3 that rotarily drives of screw rod 4, thereby above-mentioned Baltimore groove 5 is also rotated.Like this, can on the inwall of product pipe fitting, form spiral projection.In the process of formation spirality projection, raw-material flow velocity can obtain raising.Certainly,, in injection moulding process, also can make inner core 3 keep static.What on the inwall of product pipe fitting, form like this, is the projection of extending along the axis direction of inner tube.Can choose according to actual needs the embodiment through distortion, but various embodiment all falls into protection scope of the present invention.
Preferably, multiple described central strip 1 are evenly distributed along the circumferencial direction of described inner core 3, and the quantity of described central strip 1 can be 8, make the double-deck pipe fitting producing in the situation that not affecting its function, more save material and attractive in appearance.
In one embodiment, the process that described raw material are extruded described double-deck pipe fitting by mould is: described shell 2 is fixed on by screw on the extrusion of cabinet, described shell 2 maintains static, described screw rod 4 drives inner core 3 to rotate, thereby described raw material form the shape of pipe fitting by extrusion.Wherein, noise reduction ring in described Baltimore groove 5 can make to form on the inwall of described double-deck pipe fitting, such design makes double-deck pipe fitting erasure effect better obviously.
In order to realize the object that can manufacture double-deck pipe fitting, the present invention also provides a kind of manufacture method of double-deck pipe fitting, and described manufacture method comprises: S101, plastifies raw material; S102, will be extruded into double-deck pipe fitting by above-mentioned mould through the material of plasticizing; S103, carries out cooling processing to described double-deck pipe fitting.
Preferably, on inner core 3, be connected with and the screw rod 4 for driving inner core 3 to rotate of the coaxial setting of inner core 3.Extrude in the technique of double-deck pipe fitting in the enforcement of step S102, screw rod 4 can drive inner core 3 to rotate and on the inwall with the pipe fitting in manufacturing, form spirality projection.In the process of formation spirality projection, raw-material flow velocity can obtain raising.Certainly, also can in injection moulding process, make as mentioned above inner core 3 keep static, like this, what on the inwall of product pipe fitting, form be the projection of extending along the axis direction of inner tube.
In one embodiment, the temperature of plasticizing is 170-210 ℃, and at this temperature, described pipe fitting can plastify; Further preferably, the temperature of plasticizing is 180-200 ℃, and at this temperature, described raw-material plasticizing effect is better.
Preferably, described cooling method comprises the first cooling processing and the second cooling processing, the method of described the first cooling processing is: the double-deck pipe fitting that described mould is extruded be placed at 70-90 ℃, carry out cooling, preferably, the double-deck pipe fitting that described mould is extruded be placed at 75-85 ℃, carry out cooling, described in be cooled to use cooling spray carry out cooling; The method of described the second cooling processing is: the double-deck pipe fitting that described mould is extruded be placed at 30-50 ℃, carry out cooling, preferably, the double-deck pipe fitting that described mould is extruded be placed at 35-45 ℃, carry out cooling, described in be cooled to use cooler bin carry out cooling.
In one embodiment, the object of described the first cooling processing and the second cooling processing is all the sizing for described double-deck pipe fitting, and twice cooling can guarantee the fully cooling of pipe fitting, thereby has guaranteed the cooling of pipe fitting.
Further preferably, described raw material are selected from following any one compound: polypropylene, polyethylene and poly 1-butene, below any one compound may be used to the production and application of tubing, also all belong to the protection domain of this method.
In one embodiment, the process that described raw material are extruded described double-deck pipe fitting by mould is as described below: raw material are plastified, by being extruded into double-deck pipe fitting through the material of plasticizing by mould, described double-deck pipe fitting is carried out to cooling processing.By the process that is extruded into double-deck pipe fitting by above-mentioned mould through the material of plasticizing be: described shell 2 is fixed on by screw on the extrusion of cabinet, described shell 2 maintains static, described screw rod 4 is affixed with inner core 3, screw rod 4 rotates and drives inner core 3 to rotate, and described raw material form the shape of pipe fitting by extrusion.Wherein, described Baltimore groove 5 can make to form inside spin ring on the inwall of described double-deck pipe fitting.The process that double-deck pipe fitting after cooling processing is assembled comprises: the double-deck pipe fitting after cooling processing is carried out to carbonization spray word; Double-deck outer surface of pipe fittings after spray word is carried out to pad pasting; And the double-deck pipe fitting after packing is cut, encapsulated.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present invention, also can be combined, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. manufacture a mould for double-deck pipe fitting, have the feed end that allows raw material to inject, and can export the pipe end that of pipe fitting, it is characterized in that, described mould comprises: inner core (3), and this inner core (3) is column; Shell (2), outside and described inner core (3) that this shell (2) is looped around described inner core (3) arrange coaxially at intervals; And multiple central strip (1), the plurality of central strip (1) along the circumferential direction of described shell (2) spaced apart distribute, central strip described in each (1) comprises the extension (11) arranging at intervals with described inner core (3) and shell (2), and by the inwall connecting portion connected to one another (12) of described extension (11) and described shell (2); Wherein, the extension of described central strip (1), inner core (3) and shell (2) keep flushing at the pipe end that goes out of described mould.
2. mould according to claim 1, is characterized in that, the compartment between the extension (11) of adjacent two described central strip (1) distributes along the radial direction of described inner core (3) and shell (2).
3. mould according to claim 1 and 2, is characterized in that, the extension (11) of described central strip (1) keeps with the inwall of the outer wall of described inner core (3) and described shell (2) distance substantially equating.
4. mould according to claim 1, is characterized in that, on the lateral wall of described inner core (3), offers Baltimore groove (5) along the axial direction of described inner core (3).
5. mould according to claim 1, is characterized in that, is connected with and the coaxial screw rod (4) for driving described inner core (3) to rotate arranging of described inner core (3) on described inner core (3).
6. a manufacture method for double-deck pipe fitting, is characterized in that, described manufacture method comprises:
S101, plastifies raw material;
S102, will be extruded into double-deck pipe fitting by mould claimed in claim 1 through the material of plasticizing;
S103, carries out cooling processing to described double-deck pipe fitting.
7. manufacture method according to claim 6, it is characterized in that, on described inner core (3), be connected with and the coaxial screw rod (4) for driving described inner core (3) to rotate arranging of described inner core (3), in step S102, described screw rod (4) can drive described inner core (3) to rotate on the inwall with the pipe fitting in manufacturing and form spirality projection.
8. manufacture method according to claim 6, is characterized in that, the temperature of plasticizing is 170-210 ℃, and preferably, the temperature of plasticizing is 180-200 ℃.
9. manufacture method according to claim 6, it is characterized in that, described cooling method comprises the first cooling processing and the second cooling processing, the method of described the first cooling processing is: the double-deck pipe fitting that described mould is extruded be placed at 70-90 ℃, carry out cooling, preferably, the double-deck pipe fitting of described mould being extruded be placed at 75-85 ℃, carry out cooling; The method of described the second cooling processing is: the double-deck pipe fitting that described mould is extruded be placed at 30-50 ℃, carry out cooling, preferably, the double-deck pipe fitting that described mould is extruded be placed at 35-45 ℃, carry out cooling.
10. according to the manufacture method described in any one claim in 6-9, it is characterized in that, described raw material are selected from following any one compound: polypropylene, polyethylene and poly 1-butene.
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| CN201410013163.3A CN103786326A (en) | 2014-01-10 | 2014-01-10 | Mold for manufacturing double-layer pipe fitting and manufacturing method of double-layer pipe fitting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410013163.3A CN103786326A (en) | 2014-01-10 | 2014-01-10 | Mold for manufacturing double-layer pipe fitting and manufacturing method of double-layer pipe fitting |
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| CN103786326A true CN103786326A (en) | 2014-05-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905967A (en) * | 2015-05-23 | 2015-09-16 | 浙江益立胶囊股份有限公司 | Production mold for double-layer enteric hollow capsule |
| CN109808205A (en) * | 2019-02-22 | 2019-05-28 | 湖南沃开新材料科技有限公司 | A kind of device and method of continuous production MULTILAYER COMPOSITE insulating sleeve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1403268A (en) * | 2002-10-04 | 2003-03-19 | 青岛绿华塑料机械有限公司 | Spiral hollow-wall pipe with two flat walls and its once extruding production line |
| CN102049847A (en) * | 2010-11-04 | 2011-05-11 | 东莞市泰至塑料五金有限公司 | PVC-U (Unplasticized Poly Vinyl Chloride) hollow-wall internal-screw sound absorbing tube and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403268A (en) * | 2002-10-04 | 2003-03-19 | 青岛绿华塑料机械有限公司 | Spiral hollow-wall pipe with two flat walls and its once extruding production line |
| CN102049847A (en) * | 2010-11-04 | 2011-05-11 | 东莞市泰至塑料五金有限公司 | PVC-U (Unplasticized Poly Vinyl Chloride) hollow-wall internal-screw sound absorbing tube and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905967A (en) * | 2015-05-23 | 2015-09-16 | 浙江益立胶囊股份有限公司 | Production mold for double-layer enteric hollow capsule |
| CN104905967B (en) * | 2015-05-23 | 2019-04-16 | 浙江益立胶囊股份有限公司 | Production mould for the double-deck enteric hollow capsule |
| CN109808205A (en) * | 2019-02-22 | 2019-05-28 | 湖南沃开新材料科技有限公司 | A kind of device and method of continuous production MULTILAYER COMPOSITE insulating sleeve |
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Application publication date: 20140514 |