CN101240864B - Hollow silencing pipeline molding equipment - Google Patents
Hollow silencing pipeline molding equipment Download PDFInfo
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- CN101240864B CN101240864B CN2008100581729A CN200810058172A CN101240864B CN 101240864 B CN101240864 B CN 101240864B CN 2008100581729 A CN2008100581729 A CN 2008100581729A CN 200810058172 A CN200810058172 A CN 200810058172A CN 101240864 B CN101240864 B CN 101240864B
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- Prior art keywords
- pipeline
- screw
- finding time
- silencing pipeline
- forming equipment
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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
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
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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
- B29C48/03—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
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/363—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using non-actuated dynamic mixing devices
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
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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
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
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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
- B29C48/25—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
- B29C2948/92561—Time, e.g. start, termination, duration or interruption
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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
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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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
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
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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
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a hollow sound absorbing pipeline and its moulding process and equipment. The mouth film of the moulding has a secondary distributaries return frame to make raw material polymerizing and pump via secondary distributaries after via first distributaries polymerizing, so as to form hollow sound absorbing hole on the wall of the pipeline along the pipeline axes. The hollow sound absorbing pipeline can absorb noise generated by rapid flow speed of the flowing material in the pipeline, effectively eliminates the pollution caused by the noise, and makes inner wall of the single pipe smooth, the flowing material in the pipe can smoothing flow and can not form pipe plug, since setting axial hole on the wall of the single pipe, the pipeline has a less material, lower cost, and high strength. The invention effectively recovers harmful gas generated by the process, gets at the root of harm of the waste gas to environment and workers, in addition, the process of the invention can reduce electricl energy consumption and saves cost.
Description
Technical field
The present invention relates to a kind of pipeline and processing method thereof and process equipment, specifically is a kind of hollow silencing pipeline and moulding process and forming equipment.
Background technique
Along with the raising of science and technology development and people's living standard, not only require living conditions to be improved and improve, as live in spaciousness, bright house, but also require to live and good work environment, with fresh air, clean, no flue gas, waste gas, dust pollution, noise free pollutes.Noise in the middle of this mainly refers to the noise that mobile object is produced in factory or the architecture pipe.With regard to present conveyance conduit, mostly be single tube greatly, when its in the process of transport flow object, all can produce bigger noise, and this noise is almost to the sky transmitted out entirely, cause the noise pollution of surrounding environment.The producer that for this reason has is at the big problem of single tube noise, produce double walled ducting or three layers of composite PVC pipe,, have inner wall coarse though can eliminate partly noise, pipeline circulation ability, have some setbacks deficiency, especially consume materials such as easy obstruction, the cost height, problems such as price is expensive are that pipeline user institute is unacceptable, therefore are difficult to apply.
In addition with regard to existing pipeline moulding process and forming equipment, can only process single tube, and in course of working, the energy that is consumed---heat energy is higher, the waste gas severe contamination surrounding environment that is produced, the harm operator are healthy, therefore, be necessary fully to study new pipeline moulding process and forming equipment, to cut down the consumption of energy, improve working environment, safeguard work personnel are healthy.
Summary of the invention
The objective of the invention is to a kind of can effectively abating the noise, inner wall smooth is economized intensity height, the hollow silencing pipeline that cost is low with material.
Another object of the present invention is to provide a kind of forming equipment of hollow silencing pipeline.
The 3rd purpose of the present invention is to provide a kind of moulding process of hollow silencing pipeline.
First purpose of the present invention is finished by following technical proposal: a kind of hollow silencing pipeline is characterized in that being provided with axial hole in the tube wall at interval, thereby effectively absorbs the noise from inwall.
The section configuration of the axial hole in the described tube wall is rectangle or triangle, and perhaps prismatic or polygonal are perhaps oval or circular.
The section configuration of the axial hole in the described tube wall is any one the single shape in ellipse, rectangle, triangle, prismatic, polygonal, the circle, perhaps is the combined shaped more than two kinds at least, to bring into play sound deadening to greatest extent.
Axial hole in the described tube wall is distributed on the tube wall section equably or anisotropically, to bring into play the sound-deadening and noise-reducing effect to greatest extent.
Second purpose of the present invention realizes by following technical proposal: a kind of hollow silencing pipeline forming equipment, comprise tapered twin-screw, the shaping die that links to each other with tapered twin-screw, be provided with set chamber and shunting chamber in the shaping die, it is characterized in that shaping die membrana oralis place is provided with the frame of finding time of second diffluence, so that processed tube wall forms axial hole at interval by being provided with of the frame of finding time.
The described frame of finding time is made of shunting frame and the bar of finding time on it, and the frame of finding time is fixed in the second diffluence chamber by link.
The described bar of finding time is disposed on the shunting frame, and its sectional shape is oval or circular, perhaps rectangle or triangle, perhaps prismatic or polygonal.
The described bar of finding time is that the cross section is any one the single shape in circle, ellipse, rectangle, triangle, prismatic, the polygonal, or the combination of the sectional shape more than at least two kinds.
Described tapered twin-screw is provided with exhaust hole, and this exhaust hole links to each other with waste gas recovering device by exhaust duct, in case the chlorine that produces in the material heating process and other harmful gas pollution on the environment.
The screw thread of described tapered twin-screw is made as seven sections screw threads.
The 3rd purpose of the present invention finished by following technical proposal: a kind of hollow silencing pipeline moulding process, comprise the following steps: that raw material mixes, hot briquetting, cooling and shaping, the finished product traction, finished product cutting, the qualified warehouse-in of Checking of finished products, defective finished product returns the raw material blend step, it is characterized in that hot briquetting is such:
After A, mixed material are sent into tapered twin-screw, in the screw rod rotational speed is under 20～40 commentaries on classics/min conditions, warp successively: 185～195 ℃ in a district, 175～185 ℃ in two districts, 170～180 ℃ in three districts, 160～170 ℃ in four districts, add hot-extrudable 5～10 minutes, stop the heating in He Si district, three districts afterwards, the heat that shearing stress produced by twin-screw is kept plasticization temperature, to reduce power consumption, to heat in the extrusion process simultaneously the waste gas that is produced, exhaust hole on tapered twin-screw and connecting tube are sent into emptying after the processing recovery in the waste gas recovering device;
B, directly enter shaping die, once shunt polymerization earlier, carry out the second diffluence polymerization again and find time, thereby process the pipeline that forms hollow at the tube wall place along the tubing axis at interval through the raw material of tapered twin-screw heating plasticizing.
Hollow silencing pipeline provided by the invention can absorption tube in the noise that produces with tube wall soon because of flow velocity of fluid, effectively eliminate the pollution that this noise causes surrounding environment, and make inner tube wall keep the characteristics of single tube inner wall smooth, make the pipe in fluid can be unblocked, can not form pipe plug, owing to be on the tube wall of single tube, axial hole to be set, not only few with material, cost is low, and intensity height, be that a desirable noise is eliminated pipe, can be widely used in the industrial production and on the building, people can be in quiet work and the living environment.
Hollow silencing pipeline forming equipment provided by the invention, be provided with the second diffluence frame of finding time at shaping die membrana oralis place, make raw material after once shunting polymerization, find time through the second diffluence polymerization again, thereby form the hollow bloop at the tube wall upper edge tubing axis that processes, in addition, owing on tapered twin-screw, be provided with exhaust hole, and pass through connecting tube, exhaust hole is communicated with waste gas recovering device, effectively reclaim the harmful gas that course of working produces, fundamentally solve the harm that this waste gas brings environment and staff.
Hollow silencing pipeline moulding process provided by the invention can stop the heating to third and fourth district after adding the hot-extrudable short period, help cutting down the consumption of energy, recycling simultaneously adds the harmful gas that produces in the hot extrusion process, helps environmental protection, helps the healthy of safeguard work personnel, good product quality with explained hereafter of the present invention, stable performance, defect rate is low, and is few with material, cost is low, strong shock resistance.
Description of drawings
Fig. 1 is the axial sectional view of empty silencing pipeline among the present invention;
Fig. 2 is the present invention's cross-section structure;
Fig. 3, Fig. 4 are respectively the present invention's different cross-section structure;
Fig. 5 is empty silencing pipeline forming equipment structural representation among the present invention;
Fig. 6 is the A-A view of Fig. 5;
Fig. 7 is the B-B view of Fig. 5;
Fig. 8 is the C-C view of Fig. 5;
Fig. 9 is empty silencing pipeline moulding process flow chart among the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Hollow silencing pipeline of the present invention is provided with axial hole 2 in its tube wall 1, at interval as Fig. 1; The section configuration of wherein said axial hole is single ellipse 3, and is evenly distributed on the section, as Fig. 2; The section configuration of described axial hole also can be single rectangle 4, and anisotropically is distributed on the section, as Fig. 3; The section configuration of described axial hole is the combination of triangle 5 and circular 6, and anisotropically is distributed on the section, as Fig. 4.Thereby effectively absorb noise, to bring into play sound deadening to greatest extent from inwall.
Hollow silencing pipeline forming equipment provided by the invention, comprise tapered twin- screw 9,11, the feeding end 8 and the hopper 7 of tapered twin-screw join, so that mixture is through hopper 7, feeding end 8 enters in the tapered twin-screw, D on the tapered twin-screw 11, E, F, the G section is a bringing-up section, finish heating by the electrical heating wire that places this section, the screw thread of tapered twin-screw 11 is set to A, B, C, D ... seven sections screw threads of G, on tapered twin-screw 9, be positioned at E, be provided with waste gas between the F section and discharge through hole 10, this exhaust hole is communicated with the waste gas recovering device of prior art by connecting tube, thereby make the harmful gas that adds the hot extrusion process generation through discharging through hole 10, connecting tube enters and handles back emptying up to standard in the waste gas recovering device, what link to each other with tapered twin-screw discharge end is shaping die 12, be provided with polymerization chamber 14 and shunting chamber 13 in the shaping die 12, shunting frame 15 is installed by support 14 in the center in shunting chamber 13, in the shunting chamber 17 at the membrana oralis place of shaping die 12, be provided with the frame of finding time that constitutes by shunting frame and the bar 18 of finding time on it, the frame of finding time is fixed in the second diffluence chamber 17 by link 16, as Fig. 5, Fig. 6, Fig. 7, Fig. 8, wherein the find time sectional shape of bar 18 is single ellipse, perhaps rectangle or triangle, perhaps prismatic or polygonal perhaps are both above combinations arbitrarily in them.
Hollow silencing pipeline moulding process provided by the invention comprises the following steps:
1, raw material mixes: by existing prescription needed raw material is fully mixed;
2, hot briquetting:
A, after mixed material sent into as shown in Figure 5 tapered twin-screw, in the screw rod rotational speed is under the 20 commentaries on classics/min conditions, warp successively a: district (A) 185 ℃, 175 ℃ in two districts (B), 170 ℃ in three districts (C), 160 ℃ in four districts (D), add hot-extrudable 10 minutes, stop the heating in He Si district, three districts afterwards, keep plasticization temperature by the heat that tapered twin-screw 11 shearing stresses are produced, to reduce power consumption, to heat in the extrusion process simultaneously the waste gas that is produced, exhaust hole 10 on tapered twin-screw and connecting tube are sent into emptying after the processing recovery in the waste gas recovering device;
B, directly enter shaping die, once shunt polymerization earlier, carry out the second diffluence polymerization again, thereby process the pipeline that forms hollow at the tube wall place along the tubing axis at interval through the raw material of tapered twin-screw heating plasticizing;
3, cooling and shaping: the pipeline after adopting existing vacuum cooling method to moulding carries out cooling and shaping;
4, finished product traction: the pipeline traction demoulding after using existing technology with cooling and shaping;
5, finished product cutting: adopt prior art that finished product is cut into Len req, through putting in storage after the assay was approved or dispatching from the factory;
6, underproof finished product turns back to 1 step and participates in the raw material mixing after checking, to make full use of raw material.
Hollow silencing pipeline moulding process provided by the invention, its hot briquetting is:
A, after mixed material sent into as shown in Figure 5 tapered twin-screw, in the screw rod rotational speed is under the 40 commentaries on classics/min conditions, warp successively a: district (A) 195 ℃, 185 ℃ in two districts (B), 180 ℃ in three districts (C), 170 ℃ in four districts (D), add hot-extrudable 5 minutes, stop the heating in He Si district, three districts afterwards, keep plasticization temperature by the heat that tapered twin-screw 11 shearing stresses are produced, to reduce power consumption, to heat in the extrusion process simultaneously the waste gas that is produced, exhaust hole 10 on tapered twin-screw and connecting tube are sent into emptying after the processing recovery in the waste gas recovering device;
B, directly enter shaping die, once shunt polymerization earlier, carry out the second diffluence polymerization again, thereby process the pipeline that forms hollow at the tube wall place along the tubing axis at interval through the raw material of tapered twin-screw heating plasticizing;
All the other steps are identical with embodiment 1.
Claims (6)
1. a hollow silencing pipeline forming equipment comprises tapered twin-screw, and the shaping die that links to each other with tapered twin-screw is provided with set chamber and shunting chamber in the shaping die, it is characterized in that shaping die membrana oralis place is provided with the frame of finding time of second diffluence.
2. hollow silencing pipeline forming equipment according to claim 1 is characterized in that the described frame of finding time is made of shunting frame and the bar of finding time on it, and the frame of finding time is fixed in the second diffluence chamber by link.
3. hollow silencing pipeline forming equipment according to claim 2 is characterized in that the described bar of finding time is disposed on the shunting frame, and the bar sectional shape of finding time is ellipse or circle or polygonal.
4. hollow silencing pipeline forming equipment according to claim 2 is characterized in that the described bar of finding time is a kind of or combination more than at least two kinds in circular, ellipse, the polygonal.
5. hollow silencing pipeline forming equipment according to claim 1, it is characterized in that described tapered twin-screw is provided with exhaust hole, this exhaust hole links to each other with waste gas recovering device by exhaust duct, in case the chlorine that produces in the material heating process and other harmful gas pollution on the environment.
6. hollow silencing pipeline forming equipment according to claim 1 is characterized in that the screw thread of described tapered twin-screw is made as seven sections screw threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100581729A CN101240864B (en) | 2008-03-10 | 2008-03-10 | Hollow silencing pipeline molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100581729A CN101240864B (en) | 2008-03-10 | 2008-03-10 | Hollow silencing pipeline molding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101240864A CN101240864A (en) | 2008-08-13 |
| CN101240864B true CN101240864B (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100581729A Expired - Fee Related CN101240864B (en) | 2008-03-10 | 2008-03-10 | Hollow silencing pipeline molding equipment |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189662A (en) * | 2010-03-20 | 2011-09-21 | 永高股份有限公司 | Hollow sound attenuation spiral pipe extrusion mold |
| CN102252139A (en) * | 2010-05-21 | 2011-11-23 | 南通凯斯特纺织品有限公司 | Sound insulation tube |
| CN103568259A (en) * | 2012-08-10 | 2014-02-12 | 宁波康润机械科技有限公司 | Extrusion die of spiral silencing pipe |
| CN105216270A (en) * | 2015-09-10 | 2016-01-06 | 天水华天集成电路包装材料有限公司 | A kind of integrated circuit packaging tube extrusion moulding mould and production method |
| CN106808621B (en) * | 2016-12-31 | 2019-05-24 | 重庆安特管业有限公司 | A kind of annular modeling pipe mold |
| CN107271078B (en) * | 2017-07-14 | 2020-04-07 | 山东大学 | Fiber grating sensor insert of intelligent plastic pipeline, implantation system and method |
| CN107244055B (en) * | 2017-07-21 | 2023-08-29 | 四川业峰塑业有限公司 | Production system of spiral noise reduction pipe |
| CN110948816B (en) * | 2019-12-21 | 2021-05-18 | 武汉亚联塑业有限公司 | Extruding machine |
| CN113531232B (en) * | 2021-07-19 | 2022-10-28 | 扬州华光新材料股份有限公司 | Processing die of new forms of energy vacuum energy-saving cooling tube |
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2008
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