CN1557619A - Method and device for long fibre filling reinforced plastic injection moulding - Google Patents
Method and device for long fibre filling reinforced plastic injection moulding Download PDFInfo
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- CN1557619A CN1557619A CNA2004100186134A CN200410018613A CN1557619A CN 1557619 A CN1557619 A CN 1557619A CN A2004100186134 A CNA2004100186134 A CN A2004100186134A CN 200410018613 A CN200410018613 A CN 200410018613A CN 1557619 A CN1557619 A CN 1557619A
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- extruder
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Abstract
After adding long fiber and plastic in different sections of continuously operating extruder, full mixing and plasticizing, the mixture is fed to front end of intermittently operating injection apparatus and injected with the plunger into molding cavity inside the mold locking mechanism. The process has no melt storing and thus lower long fiber breaking possibility and raised product performance.
Description
Technical field
The invention belongs to what plastics molding process and apparatus field thereof, relate to a kind of (can be become what endless such as natural or staple fibre etc.) long fibre and fill the reinforced plastics injection moulding method, specially refer to the required mechanical device of this method of enforcement.
Background technology
Plastics performances such as its mechanical strength, impact resistance and dimensional stability after long fibre is filled enhancing can have in various degree with factors such as fibre length, content, technological method for processing to be increased.But by the what long fibre have light weight, easily plastics system crisp, after being filled adds mobile characteristics such as relatively poor in man-hour, its process technology and equipment are constantly developed, especially injection moulding.
The length that is disclosed is lower than the injection molding technique and the equipment thereof of 1 millimeter long fibre filled plastics system, just like Japan Patent JP 08142120, and JP08142139, it is described that the spy opens 2003-181877.U.S. Pat 5773042 discloses a kind of Coinjection molding apparatus of long fibre filled plastics system of 3 to 4.25 millimeters long.
Studies have shown that long more as the fibre length of filling reinforce, the mechanical strength of its plastic products etc. are good more, the machine-shaping difficulty is also big more certainly.On October 25th, 2000 was to November 1, held in per 3 years at Dusseldorf ,Germany (D ü sseldorf) in the 15th the international plastic, rubber fair of world scale maximum once and put on display a kind of compounding injection (mo(u)lding) machine (exhibition booth 14-C/17), be used for producing (being tending towards endless) long fiber reinforced plastics goods, but this machine compounding device can not turn round continuously, the Products Quality less stable, molding cycle is longer.Simultaneously, put on display a kind ofly in plunger advancement injection and pressure maintaining period at exhibition booth 15-C/24, the compounding device stops the compounding injection (mo(u)lding) machine of continuous operation between can be not.Its compounding device is homodromal double screw extruder, in plunger advancement injection and goods pressure maintaining period, the melting charge that is successively produced by extruder enters in the hold-up tank between an extruder and the plunger type injection device, that be connected by the materials flow pipe, when injection and pressurize end and plunger retreat, melting charge in the hold-up tank begins to be pressed in the plunger type injection device, is injected in the dies cavity by plunger again.But this device melt pressure fluctuation is bigger, and melt need pass in and out the melt hold-up tank in the process, so that the quality stability of final injection molded article is relatively poor.
U.S. Pat 2001048170 discloses the process units notion that a kind of long fibre strengthens injected articles forming method and three kinds of forms, use these devices, the system flow resistance is bigger in process, and long fibre is easier to be fractureed, and product strength can not reach ideal value.
Summary of the invention
One aspect of the present invention relates to a kind of long fibre and fills the reinforced plastics injection moulding method, relates to the mechanical device of implementing this forming method on the other hand.
Related forming method, comprise that the charging aperture (3) in double screw extruder (1) adds with plastics or its mixture, and the auxilliary charging aperture (6) of long fibre in being arranged on the fusion section of fuselage/screw rod adds, and the side feed opening (41) of other fillers between charging aperture and auxilliary charging aperture adds.Plastics or mixture are at first under rotary screw drives continuously, advance toward heading, progressively melt, mix with long fibre at the fusion section, contain and enter holding of extruder after long stapled mixture experience plastifying fusion and the homogenizing and send section, the all big what of the fuselage internal diameter of this section and screw rod external diameter and melt volume space or etc. the fuselage internal diameter and the screw rod external diameter of what fusion section, after obtaining further hot homogenizing, rotates under the drive in this section mixture at screw rod, mozzle by coupling arrangement, enter injection device, by the quick injection moulding mold cavity of plunger, through pressurize cooling aftershaping.Between injection, pressurize, cooling procedure in the extruder work of not stopping work, screw rod rotates running continuously, constantly produces melt, and makes it collect in to hold and send in the section.
Mechanical device involved in the present invention is extruding-injection (mo(u)lding) machine of an injection device of equipment, that is: comprise that can make melt continuously for one has a main charging aperture, at least one auxilliary charging aperture, at least one is for vacuumizing or the extruder of the fuselage of natural exhaust outlet, it adjoins the fuselage internal diameter/screw rod external diameter of the fuselage internal diameter/screw rod external diameter of fusion section front end more than or equal to the fusion section, directly be less than or equal to footpath at the bottom of the screw rod of fusion section at the bottom of the screw rod, there is one can move forward and backward and in one with the injection device of the plunger of melt injection moulding dies cavity, the jockey that the melting charge that extruder is produced imports the plunger type injection device and the two front end is connected.
Another kind of mechanical device involved in the present invention is extruding-injection (mo(u)lding) machine of a plurality of injection devices of equipment, that is: comprise that can make melt continuously for one has a main charging aperture, at least one auxilliary charging aperture, at least one is for vacuumizing or the extruder of the fuselage of natural exhaust outlet, it adjoins the fuselage internal diameter/screw rod external diameter of the fuselage internal diameter/screw rod external diameter of fusion section front end more than or equal to the fusion section, directly be less than or equal to footpath at the bottom of the screw rod of fusion section at the bottom of the screw rod, at least two respectively contain one and can move forward and backward and with the injection device of the plunger of melt injection moulding dies cavity, the jockey that the melting charge that extruder is produced imports the plunger type injection device and the two front end is connected.
Description of drawings
Fig. 1 is the mechanical device front schematic view of only equipping an injection device that method involved in the present invention is implemented in expression.
Fig. 2 is the mechanical device schematic top plan view that a plurality of injection devices of equipment of method involved in the present invention are implemented in expression.
The specific embodiment
Long fibre involved in the present invention is filled the specific embodiment of reinforced plastics injection moulding method and device for carrying out said thereof, is described in detail as follows with reference to accompanying drawing:
With reference to Fig. 1:
After mechanical device reaches predetermined temperature, processing and forming begins, charging aperture (3) in extruder (1) adds with plastics or its mixture, and the auxilliary charging aperture (6) of long fibre (31) in the fusion section that is arranged on fuselage (4)/screw rod (5) that is looped around on the long fibre axle (30) adds, and the side feed opening (41) of other fillers between charging aperture and auxilliary charging aperture adds.Plastics or mixture are at first at continuous rotary screw (5,9) drive down, advance, progressively melt toward heading, mix with long fibre (31) at the fusion section, mixture experiences at escape vents (51) or/and (8) are subjected to vacuum extractor (not shown) or natural exhaust.Enter holding of extruder after plastifying fusion and the homogenizing and send section (9,10), after obtaining further hot homogenizing, rotates under the drive in this section mixture at screw rod, enter the space (14) of injection device (2) by the unlimited connection mozzle (12) of switch part (13), and promote to move behind the plunger (15), melting charge amount until space (14) reaches the required injection of goods (and pressurize) amount, switch part this moment (16) opens wide, switch part (13) is closed, by driving cylinder (21,22) actuation plunger (15) is injected into the mould (17 of matched moulds with the melting charge of lining, space (14), 18) die cavity, curing molding after pressurize cooling again, clamping apparatus (25) is opened and to be ejected goods subsequently, again matched moulds and repeat identical mechanical action together, then continuous operation of extruder (1) with injection device (2), constantly produce melt, and make it collect in to hold and send in the section.When injection pressurize or cooling end, promptly switch part (13) is when opening again, and these melting charges are constantly clamp-oned injection device (2) by hookup (12), begin another repetitive cycling molding cycle.
With reference to Fig. 2:
After mechanical device reaches predetermined temperature, processing and forming begins, charging aperture (3) in extruder (1) adds with plastics or its mixture, and the auxilliary charging aperture (6) of long fibre (31) in the fusion section that is arranged on fuselage (4)/screw rod (5) that is looped around on the long fibre axle (30) adds, and the side feed opening (41) of other fillers between charging aperture and auxilliary charging aperture adds.Plastics or mixture are at first at continuous rotary screw (5,9) drive down, advance, progressively melt toward heading, mix with long fibre (31) at the fusion section, mixture experiences at escape vents (51) or/and (8) are subjected to vacuum extractor (not shown) or natural exhaust.Enter holding of extruder after plastifying fusion and the homogenizing and send section (9,10), after obtaining further hot homogenizing, rotates under the drive in this section mixture at screw rod, enter the space (14) that unlimited connection mozzle (12A) enters injection device (2) by water conservancy diversion part (13), and promote to move behind the plunger (15), melting charge amount until space (14) reaches the required injection of goods (and pressurize) amount, switch part this moment (16) opens wide, switch part (13) is closed, by driving cylinder (21,22) actuation plunger (15) is injected into the mould (17 of matched moulds with the melting charge of lining, space (14), 18) die cavity, through pressurize cooling back curing molding, clamping apparatus (25) unlatching subsequently ejects goods again, again matched moulds and repeat identical mechanical action together with injection device (2).
Open wide simultaneously at switch part (16), water conservancy diversion part (13) is opened to connecting mozzle (12B), melting charge enters injection device (62), reach the required injection of goods (and pressurize) amount until the melting charge amount, switch part this moment (66) opens wide, be injected into the mould (77 of matched moulds by driving cylinder (63) actuation plunger (65), 78) die cavity, curing molding after pressurize cooling again, clamping apparatus (75) is opened and to be ejected goods subsequently, again matched moulds and repeat identical mechanical action together with injection device (62).
Claims (9)
1. one kind comprises that by a kind of at least one can load and unload, close the clamping apparatus that opens mould, extruder, at least one plunger type injection device, the melting charge that extruder is produced imports the plunger type injection device and makes the mechanical device of the coupling arrangement that the two front end is connected, long fibre is filled the injection molding method of reinforced plastics, it is characterized in that:
A) after mechanical device reaches predetermined temperature, the charging aperture that plastics or its mixture is constantly added extruder, and long fibre is constantly added the auxilliary charging aperture that is arranged on extruder fusion section, the side feed opening of other fillers between charging aperture and auxilliary charging aperture adds
B) plastics or its mixture advance through the extruder screw drive of rotation continuously, mix with long fibre at extruder fusion section,
C) contain that long stapled plastics system further plastifies at the fusion section, fusion, by or be not deflated after, enter to hold and send section to obtain further hot homogenizing,
D) melting charge directly enters the plunger type injection device from extruder by coupling arrangement, and by the dies cavity that is in the mold closing state in the injection piston injecting lock mould device, pressurize cooling aftershaping, die sinking ejects goods again,
E) in injection and pressurize or goods cooling procedure, constantly the melting charge that produces collects in to hold and send section.And when this process finishes, constantly clamp-oned injection device by hookup.
2. mechanical device as claimed in claim 1 is characterized in that: but its clamping apparatus possesses the template of at least two installation forming moulds, is all-hydraulic latching mode or hydraulic drive toggle clamping mechanism or electronic driven type.
3. mechanical device as claimed in claim 1, it is characterized in that: its extruder is to comprise at least one screw rod, or in the same way or antidromous twin-screw, one have a main charging aperture, at least one auxilliary charging aperture, at least one is for vacuumizing or the machine of the fuselage of natural exhaust outlet.
4. mechanical device as claimed in claim 3 is characterized in that: it adjoins the fuselage internal diameter/screw rod external diameter of the fuselage internal diameter/screw rod external diameter of fusion section front end more than or equal to the fusion section.
5. mechanical device as claimed in claim 3 is characterized in that: it adjoins footpath at the bottom of the screw rod that directly is less than or equal to the fusion section at the bottom of the screw rod of fusion section front end region section.
6. mechanical device as claimed in claim 3 is characterized in that: the longitudinal center line of the center line of mozzle and extruder fuselage is non-perpendicular in its hookup.
7. mechanical device as claimed in claim 3 is characterized in that: the screw rod running of its extruder is by motorized motions.
8. mechanical device as claimed in claim 1 is characterized in that: the injection piston in its plunger type injection device by electronic or hydraulic pressure not according to or drive according to melt pressure in the cross-head and to move forward and backward.
9. mechanical device as claimed in claim 1 is characterized in that: the materials flow director switch part in its hookup is by electronic, pneumatic, machinery or hydraulic-driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100186134A CN1307035C (en) | 2004-01-14 | 2004-01-14 | Method and device for long fibre filling reinforced plastic injection moulding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100186134A CN1307035C (en) | 2004-01-14 | 2004-01-14 | Method and device for long fibre filling reinforced plastic injection moulding |
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| Publication Number | Publication Date |
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| CN1557619A true CN1557619A (en) | 2004-12-29 |
| CN1307035C CN1307035C (en) | 2007-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100186134A Expired - Fee Related CN1307035C (en) | 2004-01-14 | 2004-01-14 | Method and device for long fibre filling reinforced plastic injection moulding |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069543A (en) * | 2009-11-20 | 2011-05-25 | 合肥杰事杰新材料有限公司 | Method for preparing bicycle frame from long-fiber reinforced thermoplastic composite material through on-line direct molding |
| CN101422955B (en) * | 2007-11-02 | 2012-08-22 | 联塑(杭州)机械有限公司 | Two-segment type ejection device |
| CN105109000A (en) * | 2015-09-25 | 2015-12-02 | 苏州聚冠复合材料有限公司 | Glass fiber guiding device of double-screw extruder |
| CN105415617A (en) * | 2015-12-09 | 2016-03-23 | 镇江亿清复合材料有限公司 | Injection molding equipment used for resin material forming |
| CN102601916B (en) * | 2012-03-15 | 2016-05-04 | 大连吉润高新技术机械有限公司 | A kind of intelligent high-capacity extrusion shaper group |
| CN105690686A (en) * | 2016-04-25 | 2016-06-22 | 宁波伯乐智能装备有限公司 | Carbon fiber forming device |
| CN106003547A (en) * | 2016-06-07 | 2016-10-12 | 坤闻企业管理咨询（上海）有限公司 | Integrated type injection molding machine capable of mixing and modifying and integrated type injection molding method |
| CN107139496A (en) * | 2017-06-28 | 2017-09-08 | 广州新超纵灯饰配件有限责任公司 | A kind of counterweight and its injection preparation method |
| CN109203405A (en) * | 2018-08-17 | 2019-01-15 | 山东泰氏新材料科技有限责任公司 | A kind of method that the online reinforced polypropylene of long fibre is directly molded |
| CN109333966A (en) * | 2018-11-20 | 2019-02-15 | 上海公元建材发展有限公司 | A kind of production of FRPP reinforcement tubing extrusion molding mould and production method |
| CN110962294A (en) * | 2019-12-27 | 2020-04-07 | 马丽玲 | Mounting structure of injection molding extrusion head |
| CN111132809A (en) * | 2017-10-16 | 2020-05-08 | 克劳斯玛菲科技有限公司 | Single-screw plasticizing unit for producing a fiber-containing plastic melt having a fiber supply device |
| CN113459466A (en) * | 2018-08-17 | 2021-10-01 | 山东泰氏新材料科技有限责任公司 | Production device and process for online reinforcing polypropylene material by using continuous long fibers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4024994C2 (en) * | 1990-08-07 | 1995-08-24 | Krauss Maffei Ag | Device for loading injection molding and extruder units |
| DE19859472A1 (en) * | 1998-12-22 | 2000-11-30 | Krauss Maffei Kunststofftech | Process for the production of injection molded parts reinforced with long fibers |
| US20010048181A1 (en) * | 2000-03-03 | 2001-12-06 | Shah Suresh Deepchand | Method and apparatus for producing reinforced thermoplastic composites |
-
2004
- 2004-01-14 CN CNB2004100186134A patent/CN1307035C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101422955B (en) * | 2007-11-02 | 2012-08-22 | 联塑(杭州)机械有限公司 | Two-segment type ejection device |
| CN102069543A (en) * | 2009-11-20 | 2011-05-25 | 合肥杰事杰新材料有限公司 | Method for preparing bicycle frame from long-fiber reinforced thermoplastic composite material through on-line direct molding |
| CN102069543B (en) * | 2009-11-20 | 2014-06-18 | 合肥杰事杰新材料股份有限公司 | Method for preparing bicycle frame from long-fiber reinforced thermoplastic composite material through on-line direct molding |
| CN102601916B (en) * | 2012-03-15 | 2016-05-04 | 大连吉润高新技术机械有限公司 | A kind of intelligent high-capacity extrusion shaper group |
| CN105109000A (en) * | 2015-09-25 | 2015-12-02 | 苏州聚冠复合材料有限公司 | Glass fiber guiding device of double-screw extruder |
| CN105415617A (en) * | 2015-12-09 | 2016-03-23 | 镇江亿清复合材料有限公司 | Injection molding equipment used for resin material forming |
| CN105690686A (en) * | 2016-04-25 | 2016-06-22 | 宁波伯乐智能装备有限公司 | Carbon fiber forming device |
| CN106003547A (en) * | 2016-06-07 | 2016-10-12 | 坤闻企业管理咨询（上海）有限公司 | Integrated type injection molding machine capable of mixing and modifying and integrated type injection molding method |
| CN107139496A (en) * | 2017-06-28 | 2017-09-08 | 广州新超纵灯饰配件有限责任公司 | A kind of counterweight and its injection preparation method |
| CN111132809A (en) * | 2017-10-16 | 2020-05-08 | 克劳斯玛菲科技有限公司 | Single-screw plasticizing unit for producing a fiber-containing plastic melt having a fiber supply device |
| CN111132809B (en) * | 2017-10-16 | 2022-02-22 | 克劳斯玛菲科技有限公司 | Single-screw plasticizing unit for producing a fiber-containing plastic melt having a fiber supply device |
| CN109203405A (en) * | 2018-08-17 | 2019-01-15 | 山东泰氏新材料科技有限责任公司 | A kind of method that the online reinforced polypropylene of long fibre is directly molded |
| CN113459466A (en) * | 2018-08-17 | 2021-10-01 | 山东泰氏新材料科技有限责任公司 | Production device and process for online reinforcing polypropylene material by using continuous long fibers |
| CN109333966A (en) * | 2018-11-20 | 2019-02-15 | 上海公元建材发展有限公司 | A kind of production of FRPP reinforcement tubing extrusion molding mould and production method |
| CN110962294A (en) * | 2019-12-27 | 2020-04-07 | 马丽玲 | Mounting structure of injection molding extrusion head |
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| CN1307035C (en) | 2007-03-28 |
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