CN102601969A - Mould and process for one-mould-double-output forming of polypropylene random copolymer pipes - Google Patents
Mould and process for one-mould-double-output forming of polypropylene random copolymer pipes Download PDFInfo
- Publication number
- CN102601969A CN102601969A CN201210066327XA CN201210066327A CN102601969A CN 102601969 A CN102601969 A CN 102601969A CN 201210066327X A CN201210066327X A CN 201210066327XA CN 201210066327 A CN201210066327 A CN 201210066327A CN 102601969 A CN102601969 A CN 102601969A
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- China
- Prior art keywords
- mould
- shunting
- extruder
- moulds
- diameter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
- B29C48/695—Flow dividers, e.g. breaker plates
- B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
- B29C48/71—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows for layer multiplication
-
- 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
- B29C48/695—Flow dividers, e.g. breaker plates
- B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
- B29C48/705—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows in the die zone, e.g. to create flow homogeneity
-
- 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
-
- 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
-
- 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
- B29C2948/92961—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A mould for one-mould-double-output forming of polypropylene random copolymer pipes comprises a distributing mould and two forming moulds. The distributing mould comprises an upper mould and a lower mould which are integrally connected by a bolt, a main runner and two outwards inclined sub-runners are formed inside the upper mould and the lower mould which are symmetric, the forming moulds are D25S4.0-type pipe moulds, and the distributing mould is arranged among an extruder and the two forming moulds. A process for one-mould-double-output forming of the polypropylene random copolymer pipes adopts sectioned heating, the temperature of the distributing mould ranges from 155 DEG C to 185 DEG C, and the production speed ranges from 8.5m/min to 11.5m/min. The mould and the process have the advantages that the mould is simple in structure, the process is easy to implement, a screw is extended by the forming moulds, material flow is sufficiently homogenized, production stability is further improved, the heating temperature of the process is reduced, the performance of the pipes is ensured, the productivity of the PP-R (polypropylene) pipes can be improved by 85%-95% by the aid of the distributing mould, and obvious economic and social benefits are achieved.
Description
Technical field
The present invention relates to the technology of preparing of polypropylene pipe, particularly a kind ofly be used for that random copolymerization polypropylene pipe one mould is two to go out forming mould and technology.
Background technology
Random copolymerization polypropylene pipe (being the PP-R pipe) is that Europe is in the novel plastic pipeline product of the Application and Development nineties in 20th century; PP-R pipe is except having the characteristics such as general plastic tube is in light weight, corrosion-resistant, non-scaling, also have good heat resistance, heat preservation energy-saving, non-toxic sanitary, easy for installation, connect advantages such as reliable.Its excellent cost performance makes it become the maximum a kind of water supply line of employing in the present house ornamentation engineering.
PP-R tubing is produced through extruding processing, and domestic each big production firm has more stable moulding process at present, but ubiquity the problem that production efficiency is low, the extruder production capacity fails to give full play to.If improve line speed in process of production merely, problems such as tube wall thickness fluctuation, performance reduction can appear again, and cause production stability to descend.
Be head it off; We grope through scrap build and test of many times; Designed and developed that an a kind of mould is two to go out PP-R tubing extrusion molding mould and technology, utilized a set of equipment and mould can produce two PP-R simultaneously and manage, effectively improved the integrated production capacity of PP-R tubing.
Summary of the invention
The objective of the invention is to above-mentioned existing problems; Provide a kind of and be used for that random copolymerization polypropylene pipe one mould is two to go out forming mould; This mould is into two structures that go out, and has found out a cover production technology to this mould simultaneously, make produce easy to implement; And can under the prerequisite that guarantees pipe performance and production stability, significantly improve the integrated production capacity of PP-R tubing, have tangible economic benefit and social benefit.
Technical scheme of the present invention:
A kind ofly be used for that random copolymerization polypropylene pipe one mould is two to go out forming mould; Constitute by shunting mould and two moulds; The shunting mould is the cuboid of being made up of measure-alike upper die and lower die, and the four corners position of upper die and lower die is respectively equipped with four dowel holes and four positioning through hole, and patrix is provided with fixed via; Counterdie is provided with fixing threaded hole; Upper die and lower die connect as one and form in inside a sprue and two outward-dipping runners and are symmetrical set through bolt, two sides of shunting mould respectively are provided with a thermocouple temperature control hole, and the front and rear surfaces of shunting mould is respectively equipped with the screw that is connected with mould with extruder; Mould adopts D25S4.0 type pipe mold, comprises outer die body, conveyor screw, anterior plug, rear portion plug; The shunting mould is arranged between extruder and two moulds; The merging core material outlet centering of its sprue and extruder is also fixed through bolt and extruder adpting flange, and two runners are fixed with the material inlet centering of two moulds and through bolt and mould adpting flange respectively.
The sprue diameter of said shunting mould is 40-70mm, and two runner point diameters are 35-58mm, and the rear end diameter is 32-55mm, and the length of two runners is 160-200mm, and angle is the 60-70 degree.
The diameter of said upper die and lower die locating hole is 15-20mm, and patrix fixing hole diameter is 12.5mm, and the counterdie fixing threaded hole is M12, and the diameter of connector bolt penetration hole is 12-15mm.
The total length of said mould is 280-420mm, and wherein spirochetal length is 90-115mm, and diameter is 35-50mm.
A kind of said two technologies that go out moulding of random copolymerization polypropylene pipe one mould that are used for, its parameter is set to:
1) extruder barrel feeding section temperature is 150-170 ℃, and melt zone and homogenizing zone temperature are 160-185 ℃, and the extruder moment of torsion is 95-115Nm;
2) the shunting mold temperature is 155-185 ℃;
3) every sleeve forming mould is divided into two sections heating, and the first section temperature that is positioned at the conveyor screw position is 175-190 ℃, and the second section temperature that is positioned at the plug position is 185-200 ℃, and speed of production is 8.5-11.5m/min.
Advantage of the present invention is: this mould structure is simple; Technology is easy to implement, and materials flow gets into two moulds by the shunting mould respectively after the shunting mould is divided into two; After conveyor screw shunting homogenizing; Plug and outside form the material runner between the die body, last extrusion molding, the shunting mould can guarantee stable extrusion pressure through the appropriate design of flow diameter and length; Mould prolongs conveyor screw, thereby has guaranteed the abundant homogenizing of materials flow, and production stability is further improved.Technological temperature reduces 8-15 ℃, and making to strengthen at die pressure has slightly with residence time of material that plasticizing rate keeps stablizing under the prerequisite of increase, thereby the performance of tubing is guaranteed.In sum, the present invention can improve PP-R tubing production capacity 85%-95% at pipe performance with producing under the stable prerequisite, has tangible economic benefit and social benefit.
Description of drawings
Fig. 1 is that the shunting mould is overlooked the sectional structure sketch map.
Fig. 2 is a shunting mould front elevational schematic.
Fig. 3 is that mould is overlooked the sectional structure sketch map.
Among the figure: 1. shunting upper mould 2. is shunted the material inlet 14. extruder adpting flanges 15. mould adpting flanges of merging core material outlet 13. moulds of lower moulds 3. positioning through hole 4. bolts 5. sprues 6. runners 7. thermocouple temperature control holes 8. outer die body 9. conveyor screws 10. anterior plug 11. rear portion plugs 12. extruders
The specific embodiment
Embodiment:
A kind ofly be used for that random copolymerization polypropylene pipe one mould is two to go out forming mould; Constitute by shunting mould and two moulds; The shunting mould is the cuboid of being made up of measure-alike patrix 1 and counterdie 2, and the four corners position of patrix 1 and counterdie 2 is respectively equipped with four alignment pins and four positioning through hole 3, and patrix 1 is provided with fixed via; Counterdie 2 is provided with fixing threaded hole; Patrix 1 connects as one and forms in inside a sprue 5 with two outward-dipping runners 6 and be symmetrical set through bolt 4 with counterdie 2, two sides of shunting mould respectively are provided with a thermocouple temperature control hole 7, and the front and rear surfaces of shunting mould is respectively equipped with the screw that is connected with mould with extruder; Mould adopts D25S4.0 type pipe mold, comprises outer die body 8, conveyor screw 9, anterior plug 10, rear portion plug 11; The shunting mould is arranged between extruder and two moulds; Its sprue 5 is fixed with merging core material outlet 12 centerings of extruder and through bolt and extruder adpting flange 14, and two runners 6 are also fixing through bolt and mould adpting flange 15 with material inlet 13 centerings of two moulds respectively.
Among this embodiment, the sprue diameter of shunting mould is 52mm, and two runner point diameters are 42mm, and the rear end diameter is 38mm, and the length of two runners is 175mm, and angle is 65 degree; The diameter of upper die and lower die locating hole is 16mm, and patrix fixing hole diameter is 12.5mm, and the counterdie fixing threaded hole is M12, and the diameter of connector bolt penetration hole is 13mm, and bolt is M12, and quantity is 10; The total length of mould is 320mm, and wherein spirochetal length is 102mm, and diameter is 40mm.
The said two technologies that go out moulding of random copolymerization polypropylene pipe one mould that are used for, its parameter is set to:
1) extruder barrel feeding section temperature is 155 ℃, and melt zone and homogenizing zone temperature are 165 ℃, and the extruder moment of torsion is 102Nm;
2) the shunting mold temperature is 170 ℃;
3) every sleeve forming mould is divided into two sections heating, and the first section temperature that is positioned at the conveyor screw position is 180 ℃, and the second section temperature that is positioned at the plug position is 195 ℃, and speed of production is 9.8m/min.
During use, the material after extruder plasticizing gets into the shunting mould, through two go out the runner shunting after, overlap the PP-R moulds through two respectively, can make the material of fusion be extruded into PP-R tubing.
Claims (5)
1. one kind is used for that random copolymerization polypropylene pipe one mould is two to go out forming mould; It is characterized in that: constitute by shunting mould and two moulds; The shunting mould is the cuboid of being made up of measure-alike upper die and lower die; The four corners position of upper die and lower die is respectively equipped with four dowel holes and four positioning through hole; Patrix is provided with fixed via, and counterdie is provided with fixing threaded hole, and upper die and lower die connect as one and form in inside a sprue and two outward-dipping runners and are symmetrical set through bolt; Two sides of shunting mould respectively are provided with a thermocouple temperature control hole, and the front and rear surfaces of shunting mould is respectively equipped with the screw that is connected with mould with extruder; Mould adopts D25S4.0 type pipe mold, comprises outer die body, conveyor screw, anterior plug, rear portion plug; The shunting mould is arranged between extruder and two moulds; The merging core material outlet centering of its sprue and extruder is also fixed through bolt and extruder adpting flange, and two runners are fixed with the material inlet centering of two moulds and through bolt and mould adpting flange respectively.
2. be used for according to claim 1 is said that random copolymerization polypropylene pipe one mould is two to go out forming mould; It is characterized in that: the sprue diameter of said shunting mould is 40-70mm; Two runner point diameters are 35-58mm; The rear end diameter is 32-55mm, and the length of two runners is 160-200mm, and angle is the 60-70 degree.
3. be used for according to claim 1 is said that random copolymerization polypropylene pipe one mould is two to go out forming mould; It is characterized in that: the diameter of said upper die and lower die locating hole is 15-20mm; Patrix fixing hole diameter is 12.5mm; The counterdie fixing threaded hole is M12, and the diameter of connector bolt penetration hole is 12-15mm.
4. be used for according to claim 1 is said that random copolymerization polypropylene pipe one mould is two to go out forming mould, it is characterized in that: the total length of said mould is 280-420mm, and wherein spirochetal length is 90-115mm, and diameter is 35-50mm.
5. one kind is used for the two technologies that go out moulding of random copolymerization polypropylene pipe one mould according to claim 1, it is characterized in that parameter is set to:
1) extruder barrel feeding section temperature is 150-170 ℃, and melt zone and homogenizing zone temperature are 160-185 ℃, and the extruder moment of torsion is 95-115Nm;
2) the shunting mold temperature is 155-185 ℃;
3) every sleeve forming mould is divided into two sections heating, and the first section temperature that is positioned at the conveyor screw position is 175-190 ℃, and the second section temperature that is positioned at the plug position is 185-200 ℃, and speed of production is 8.5-11.5m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066327XA CN102601969A (en) | 2012-03-14 | 2012-03-14 | Mould and process for one-mould-double-output forming of polypropylene random copolymer pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066327XA CN102601969A (en) | 2012-03-14 | 2012-03-14 | Mould and process for one-mould-double-output forming of polypropylene random copolymer pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102601969A true CN102601969A (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210066327XA Pending CN102601969A (en) | 2012-03-14 | 2012-03-14 | Mould and process for one-mould-double-output forming of polypropylene random copolymer pipes |
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| CN (1) | CN102601969A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260308A (en) * | 2014-08-29 | 2015-01-07 | 辽宁程威塑料型材有限公司 | Co-extrusion forming method for plastic profile and sealing rubber strip |
| CN104456409A (en) * | 2014-11-10 | 2015-03-25 | 桐乡市佳盛塑料制品有限公司 | LED lampshade and extrusion forming device thereof |
| CN109291403A (en) * | 2018-10-23 | 2019-02-01 | 苏州金纬管道科技有限公司 | The double extruders out of one mould |
| WO2021017511A1 (en) * | 2019-08-01 | 2021-02-04 | 安徽森泰木塑集团股份有限公司 | Extruder die and wood plastic extruder having same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0586109A2 (en) * | 1992-08-11 | 1994-03-09 | Sumitomo Chemical Company, Limited | Polypropylene compositions and films thereof |
| JP3113013B2 (en) * | 1991-11-13 | 2000-11-27 | 三井化学株式会社 | Molding method for syndiotactic polypropylene |
| CN201120712Y (en) * | 2007-10-31 | 2008-09-24 | 佛山市南海易乐工程塑料有限公司 | Engineering plastic special-shaped section bar extruding-forming device |
| CN201249515Y (en) * | 2008-06-16 | 2009-06-03 | 新疆天业（集团）有限公司 | Plastic pipe extrusion die with high-speed extrusion, large caliber and thin wall |
| CN101791850A (en) * | 2010-04-13 | 2010-08-04 | 张家港联冠新材料有限公司 | One-mould multi-discharge extruding pipe mould head for super high molecular weight polyethylene |
-
2012
- 2012-03-14 CN CN201210066327XA patent/CN102601969A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3113013B2 (en) * | 1991-11-13 | 2000-11-27 | 三井化学株式会社 | Molding method for syndiotactic polypropylene |
| EP0586109A2 (en) * | 1992-08-11 | 1994-03-09 | Sumitomo Chemical Company, Limited | Polypropylene compositions and films thereof |
| CN201120712Y (en) * | 2007-10-31 | 2008-09-24 | 佛山市南海易乐工程塑料有限公司 | Engineering plastic special-shaped section bar extruding-forming device |
| CN201249515Y (en) * | 2008-06-16 | 2009-06-03 | 新疆天业（集团）有限公司 | Plastic pipe extrusion die with high-speed extrusion, large caliber and thin wall |
| CN101791850A (en) * | 2010-04-13 | 2010-08-04 | 张家港联冠新材料有限公司 | One-mould multi-discharge extruding pipe mould head for super high molecular weight polyethylene |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260308A (en) * | 2014-08-29 | 2015-01-07 | 辽宁程威塑料型材有限公司 | Co-extrusion forming method for plastic profile and sealing rubber strip |
| CN104456409A (en) * | 2014-11-10 | 2015-03-25 | 桐乡市佳盛塑料制品有限公司 | LED lampshade and extrusion forming device thereof |
| CN109291403A (en) * | 2018-10-23 | 2019-02-01 | 苏州金纬管道科技有限公司 | The double extruders out of one mould |
| WO2021017511A1 (en) * | 2019-08-01 | 2021-02-04 | 安徽森泰木塑集团股份有限公司 | Extruder die and wood plastic extruder having same |
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Application publication date: 20120725 |