CN101053994B - Online flared method for HDPE heavy caliber double walls corrugated pipe - Google Patents
Online flared method for HDPE heavy caliber double walls corrugated pipe Download PDFInfo
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- CN101053994B CN101053994B CN200710038881A CN200710038881A CN101053994B CN 101053994 B CN101053994 B CN 101053994B CN 200710038881 A CN200710038881 A CN 200710038881A CN 200710038881 A CN200710038881 A CN 200710038881A CN 101053994 B CN101053994 B CN 101053994B
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- wall
- corrugated pipe
- expanding
- inner layer
- online
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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
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The present invention discloses an online expanding method for HDPE double-wall corrugated pipe with a large calibre and the expanding die thereof. The method comprises the steps of that: 1. the external wall material of the corrugated pipe is lifted and blown to the expanding die by means of the inner layer gas; 2. the external wall of the corrugated pipe is adsorbed on the expanding die by meansof the vacuum of the expanding die; 3. the internal wall of the corrugated pipe is blown and adhered to the external wall; 4. the internal wall and the external wall of the corrugated pipe form a sealed chamber, the air release valve of the inner layer gas is opened, and the inner layer gas is increased, when the internal wall adhered to the eternal wall, the inner layer gas is discharged. In thepresent invention, the process for removing the inner layer at the expanding position by a special tool is eliminated, the equipment investment is reduced, the production process is simplified, the production cost is reduced; the wall thickness at the expanding position of the corrugated pipe is increased and is composed by adhering the internal wall with the external wall, so that the strength is improved and is adapted to the strength requirement of socket joint between segments, the sealing after socket joint is rigorous; besides, the problem of that the expanding bell mouth is hard to beadhered is solved.
Description
Technical field
Relate generally to plastic tube bellow flare technical field of the present invention relates to the online flared method of a kind of HDPE large-caliber double-wall bellow especially.
Background technology
In recent years, the plastic conduit industry of China obtains development at a high speed, and application constantly enlarges, and has become one of industry important in the national economy, is described as the blood vessel in the city, more and more receives the concern of governments at all levels and relevant departments.Simultaneously, national relevant policies guiding makes plastic conduit further be applied." Tenth-Five Year Plan of national chemical building material industry and development planning outline in 2010 ", the Ministry of Construction " apply and limit the technology that bans use of about the issue＜Ministry of Construction〉bulletin " associated documents such as (No. the 218th, the Ministry of Construction) have proposed the application and the developing goal of various plastic conduits.Having determined that plastic conduit is applied should reach following target: by 2010, plastic conduit occupation rate of market in national various pipes reaches more than 60%, wherein: building water supply 80% adopts plastic tube, construction drainage pipeline 80% adopts plastic tube, building rain-water drainage pipeline 70% adopts plastic tube, and wiring architecture threading protecting pipe 90% adopts plastic tube, and urban water supply pipeline 70% adopts plastic tube, cities and towns drainage pipeline 50% adopts plastic tube, and town gas pipe 60% adopts plastic tube.Country's problem of paying much attention to build a conservation-minded society, energy-conservation, water saving, material-saving, " four joints " work that saves land promote that plastic conduit has bigger application market.The many chances such as middle grid design that increase reusing sewage in pipe network improving, sewage disposal, the building will promote further applying of plastic conduit greatly.
The technical merit of present domestic plastic conduit and the gap of developed countries are just progressively dwindled, and the kind that has has reached the advanced level of developed country.Because the HDPE large-caliber double-wall bellow is the new product of plastic conduit industry, its enlarging technology if interbed gas can not be discharged fully, will cause horn mouth not paste in actual production process, influence the tubing service property (quality), can cause whole tubing to scrap when serious.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of HDPE large-caliber double-wall bellow online flared method, to solve the deficiencies in the prior art.
Technical problem solved by the invention can realize by the following technical solutions:
The online flared method of a kind of HDPE large-caliber double-wall bellow is characterized in that, comprises the steps:
1. by interbed gas the bellows external wall material is held up and blow to the enlarging module;
2. enlarging module vacuum is adsorbed on the bellows outer wall on the enlarging module;
3. by internal layer gas the bellows inwall is blown afloat and stick outer wall;
4. bellows inwall and outer wall form seal chamber, interbed gas vent valve is opened, and strengthened internal layer gas, and inwall is when sticking outer wall, and interbed gas is discharged by the inserts on the enlarging module.
The employed enlarging module of flared method described in the present invention comprises the two halves annular die, and its inwall is provided with annular projection, and outer wall is provided with installed part, and described annular projection sidewall is provided with at least one inserts.
For interbed gas safety is got rid of, at least one sidewall of described annular projection is provided with inserts.
The online tubing that just can make the double-walled plastic film capicitor of direct socket joint between section and the section of the present invention, what adopt is double-walled enlarging forming technique, than single wall enlarging, after saving material tubing rolling off the production line, will be with the technology of special equipment with the excision of the internal layer of enlarging place, reduce the equipment input, simplified production technology, reduced production cost; Because the wall thickness of tubing enlarging place of plastic film capicitor is made of internal layer and outer fitting together, thereby increased the wall thickness of enlarging place, intensity increases, and is applicable to fully in use to the socket joint requirement of strength between section and the section, seal tightly the construction quality height behind the socket joint.Behind enlarging forming module safety inserts, solved the problem that the enlarging horn mouth does not paste.
Description of drawings
Fig. 1 is a bellow flare view of the present invention.
Fig. 2 is a flaring die block structure schematic diagram of the present invention.
The specific embodiment
Technological means, the creation characteristic of realizing for the present invention that gets over, reach purpose and effect is easy to understand,, further set forth the present invention below in conjunction with concrete diagram.
Fig. 1 is the schematic diagram of bellow flare state, online flared method of the present invention, after bellows outer wall runner 2 is extruded the material of fusion by extruder during enlarging by the mouth mould, hold up by the material of interbed gas fusion, forming module 1 is provided with a lot of and vacuumizes seam, lean on the vacuum suction mode that the material of fusion is adsorbed on cooling forming on the forming module, 3 is bellows inwall runner, inwall adopts the air-pressure forming mode, by internal layer gas the material of fusion is blown afloat and to stick in type outer wall, the shape of enlarging module is a tubing enlarging shape.When outer wall enlarging end, bellows inwall and outer wall form the cavity of a sealing, at this moment interbed gas vent valve are opened, and strengthen internal layer gas, and inwall is venting interbed gas when sticking outer wall, forms complete enlarging.
In order to make the very complete discharge of interbed gas, be provided with special enlarging module, it comprises two halves annular die 8, and semicircular mould 8 inwalls are provided with annular projection 4, and outer wall is provided with installed part 5, it in the present embodiment square fastener, so that it is installed on the make-up machine, annular projection 4 sidewalls are provided with at least one inserts, and inserts can be arranged on the two side of annular projection 4, as in the present embodiment at the equal inserts in annular projection 4 two sides, as inserts 6 and 7 (inserts on another sidewall is not shown).
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. the online flared method of HDPE large-caliber double-wall bellow is characterized in that, comprises the steps:
1]. by interbed gas the picking-up of bellows external wall material is blowed to the enlarging module;
2]. enlarging module vacuum is adsorbed on the bellows outer wall on the enlarging module;
3]. by internal layer gas the bellows inwall is blown afloat and to stick outer wall;
4]. bellows inwall and outer wall form seal chamber, interbed gas vent valve is opened, and strengthened internal layer gas, and inwall is when sticking outer wall, and interbed gas is discharged by the inserts on the enlarging module.
2. flared method as claimed in claim 1 is characterized in that: described enlarging module comprises the two halves annular die, and the inwall of described two halves annular die is provided with annular projection, and outer wall is provided with installed part, and described annular projection sidewall is provided with at least one inserts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710038881A CN101053994B (en) | 2007-03-30 | 2007-03-30 | Online flared method for HDPE heavy caliber double walls corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710038881A CN101053994B (en) | 2007-03-30 | 2007-03-30 | Online flared method for HDPE heavy caliber double walls corrugated pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101053994A CN101053994A (en) | 2007-10-17 |
| CN101053994B true CN101053994B (en) | 2010-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710038881A Active CN101053994B (en) | 2007-03-30 | 2007-03-30 | Online flared method for HDPE heavy caliber double walls corrugated pipe |
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| Country | Link |
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| CN (1) | CN101053994B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358033B (en) * | 2011-06-16 | 2014-06-25 | 浙江拱东医疗科技有限公司 | Stretching forming device for local area of plastic tube |
| CN102514190B (en) * | 2011-12-08 | 2014-05-07 | 安徽国通高新管业股份有限公司 | Sectional forming control method for flaring of PE double-wall corrugated pipe with large caliber |
| CN104552912B (en) * | 2014-11-21 | 2016-09-21 | 长园电子（东莞）有限公司 | A kind of clamping and feeding mechanism of double-wall pipe sealing cap equipment |
| CN104476762B (en) * | 2014-11-21 | 2017-03-01 | 长园电子（东莞）有限公司 | A kind of double-wall pipe sealing cap equipment |
| CN111037902B (en) * | 2019-06-04 | 2021-08-24 | 安徽富通塑业科技有限公司 | Flaring segmented forming control method for large-diameter PE double-wall corrugated pipe |
| CN111037869A (en) * | 2019-06-04 | 2020-04-21 | 安徽富通塑业科技有限公司 | HDPE large-caliber double-wall corrugated pipe online flaring method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515402A (en) * | 2003-08-26 | 2004-07-28 | 甘国工 | Method for forming integrated double-wall bell socket of plastic corrugated pipe forming machine and its equipment |
-
2007
- 2007-03-30 CN CN200710038881A patent/CN101053994B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515402A (en) * | 2003-08-26 | 2004-07-28 | 甘国工 | Method for forming integrated double-wall bell socket of plastic corrugated pipe forming machine and its equipment |
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| Publication number | Publication date |
|---|---|
| CN101053994A (en) | 2007-10-17 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Address after: 201319 No. 999 East Cambridge Road, Nanhui District, Shanghai Patentee after: Ad pipeline (Shanghai) Co.,Ltd. Address before: 201319 No. 999 East Cambridge Road, Nanhui District, Shanghai Patentee before: Shanghai ERA Building Material Development Co.,Ltd. |