CN104369285B - The melt impregnation Apparatus and method for of continuous fiber reinforced thermoplastic resin - Google Patents
The melt impregnation Apparatus and method for of continuous fiber reinforced thermoplastic resin Download PDFInfo
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- CN104369285B CN104369285B CN201410692330.1A CN201410692330A CN104369285B CN 104369285 B CN104369285 B CN 104369285B CN 201410692330 A CN201410692330 A CN 201410692330A CN 104369285 B CN104369285 B CN 104369285B
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- die head
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Abstract
The invention discloses the melt impregnation Apparatus and method for of a kind of continuous fiber reinforced thermoplastic resin.The melt impregnation equipment of continuous fiber reinforced thermoplastic resin, including head and distributor；Head includes a fixing die head and two movable die heads；Fixing die internal has to be placed and the cavity of connection above-mentioned two activity die head, becomes X-shaped in the middle of this cavity；The outer end squarely of each movable die head, intermediate ends triangularity, top are arc；Above-mentioned two activity die head wherein first movable die head middle and upper part has the first dipping runner, middle and lower part and fixing die head gapless with fixing die head；Second movable die head middle and upper part has the second dipping runner with fixing die head gapless, middle and lower part with fixing die head.The present invention can solve how to make continuous fiber impregnate complete, melt pressure and flow equalization, and continuous fiber is dispersed in dipping runner, tension force is controlled, reduce the technical problem of fiber secondary damage.
Description
Technical field
The present invention relates to a kind of thermoplastic resin molded technical field, particularly to a kind of continuous fiber reinforced thermoplastic tree
The melt impregnation method and apparatus of fat.
Background technology
Continuous fiber reinforced thermoplastic resin is a kind of with thermoplastic resin as matrix, reinforcing fiber unidirectional array and continuously
For preparing the intermediate of composite, have a wide range of applications in fields such as traffic, automobile, oil, natural gas or buildings.
Especially in automotive field, continuous fiber reinforced thermoplastic resin can draw through the mouth die of given shape, pelletizing is long
Fiber reinforcement pellet, then form long fiber reinforcement product through secondary injection molding, extensively replace the various metals of automotive interior
Structural member, such as front-end module, seat support, instrument board framework and door-plate module etc., reaches to mould Dai Gang, reduces discharging the mesh of environmental protection
's.But in actual production process, usually affect the dipping of continuous tow due to the unreasonable of melt impregnation device structure
Effect, frequently even occurs broken strip etc. to produce abnormal phenomenon, is substantially reduced yield and the quality of product.
As: a kind of long fiber reinforced plastics production fiber disclosed in the patent application of Publication No. CN101695873A
Tow fuse dipping die head, this equipment uses has medium-altitude contact godet and noncontact godet pair, reinforcing fiber silk
Radial expansion and the plastic melt of bundle are lost toward the Radial Flow of fibre bundle, the friction reducing fibre single thread.At full melt
Die cavity in, fibre bundle tension force draw under alternately walk around contact godet circle drum body, between noncontact godet pair
Gap passes, and circle drum body promotes to be towed the fibre bundle slipping over its curved surface to both sides Quick Extended, increases fibre bundle and moulds
The contact surface of material melt；Noncontact godet evokes melt eddy flow, presses to through godet the fibre bundle between slit, promotes
Plastic melt, toward fibre bundle Radial Flow, improves dipping effect.But in actual applications, this equipment maximum has a problem in that not
Resin melt can be controlled evenly into die cavity, it is impossible to make whole cavity pressure keep stable, the wind that local pressure is too high
Danger is strengthened, and also therefore is difficult to reach preferable dipping effect.
The shaping of a kind of fiber reinforced thermoplastic resin disclosed in the patent application of Publication No. CN102107536A sets
Standby, this equipment is that the mode using fiber duct is passed through pending fiber so that often bundle long fibre can be along independent
Advance in direction, it is to avoid the interference between fibre bundle；Use pre-fluffy and pre-heating system, and add the jockey pulley of special shape, protect
Demonstrate,prove long stapled dipping effect, introduce resin melt runner in the downside of fibre bundle, and use resin melt from the bottom up to enter
Material mode.But in the device, melt is emerged from long-fiber bundle one side, melt is difficult to be coated with wetting fibre bundle comprehensively, and melt
The most unified Distribution system of flow channel, it is difficult to ensure that the melt pressure in whole die cavity more equalizes with consistent so that continuously
When by impregnating equipment, easily there is the ripple of broken strip or fiber content due to the fluctuation of resin melt flow in long-fiber bundle
Dynamic.
A kind of continuous fiber reinforced thermoplastic resin shaping disclosed in the patent application of Publication No. CN102848489A is used
Melt impregnation head, be provided with inside head melt distribution runner and dipping runner, melt distribution runner each discharging opening lead to
Crossing discharge roller to be connected with dipping runner, the two ends of dipping runner are respectively provided with the access road of fibre bundle turnover and export logical
Road, is respectively provided with least one set jockey pulley, wherein, discharge roller between access road and discharge roller, between exit passageway and discharge roller
For connecting melt distribution runner and dipping runner, play a transition role.Melt impregnation equipment before this equipment is relative is the most relatively
Big improvement, but still come with some shortcomings.First, resin melt is to emerge on the downside of discharge roller equally, it is difficult to be coated with leaching comprehensively
Profit fibre bundle, there is one side and first infiltrate in each fiber, the inhomogeneities of infiltration after opposite side；Secondly, this equipment is by discharge roller
Summit meet as fiber and resin the place of infiltration, owing to the summit of discharge roller is at crest, tension force is maximum, although permissible
Reinforcing fiber dipping effect, but add the risk of fibrous fracture, it is susceptible to the phenomenon of broken strip；Again, this equipment is by resin
Melt outlet is divided into two, and allows long-fiber bundle that twice infiltration successively occurs, and the melt resistance of two runners is different, may make
Become the inhomogeneities of melt feeding, cause bigger dipping difference, finally affect fiber content and product appearance.
Summary of the invention
It is an object of the invention to provide the melt impregnation equipment of a kind of continuous fiber reinforced thermoplastic resin, solve how to make
Continuous fiber impregnates complete, melt pressure and flow equalization, and continuous fiber is dispersed in dipping runner, tension force is controlled
System, the technical problem of minimizing fiber secondary damage.
Further object is that a kind of melt impregnation method that continuous fiber reinforced thermoplastic resin is provided, solve
Certainly how to make continuous fiber impregnate complete, melt pressure and flow equalization, continuous fiber is dispersed, tension force in dipping runner
Controlled, reduced the technical problem of fiber secondary damage.
The melt impregnation equipment of continuous fiber reinforced thermoplastic resin, including head and distributor；Head includes one admittedly
Cover half head and two movable die heads；Fixing die internal has to be placed and the cavity of connection above-mentioned two activity die head, this cavity
Middle one-tenth X-shaped；The outer end squarely of each movable die head, intermediate ends triangularity, top are arc；Above-mentioned two activity
Die head wherein first movable die head middle and upper part has the first dipping runner with fixing die head, and middle and lower part is with fixing die head continuously
Gap；Second movable die head middle and upper part has the second dipping runner with fixing die head gapless, middle and lower part with fixing die head；First
Individual movable die internal has the first melt distribution runner, the above-mentioned first melt distribution stream of hot melt spout alignment of distributor
Road.
It is respectively provided with a hole in the middle of described first movable die head and second movable die head.
The height on the top on the left of described first melt distribution runner forms gap structure less than the height on the top on right side.
Also there is above the outer end of described first movable die head and intermediate ends intersection a second melt distribution runner,
This second melt distribution runner is in the opposite side of the first dipping runner；One it also is provided with equally at this second melt distribution runner
Distributor.
The melt impregnation method of continuous fiber reinforced thermoplastic resin, comprises the steps:
A, continuous fiber are entered by the first dipping runner between first movable die head and fixing die head, are then passed through
Fixing die head middle cavity position, finally flows out from the second dipping runner between second movable die head and fixing die head；
B, thermoplastic melt go out in above-mentioned two dipping flow passage through the branch flow passage at different levels of two distributors, leaching
Stain runner forms airtight cavity, and thermoplastic melt carries out two-sided dipping to continuous fiber；
C, through melt impregnation continuous fiber between second movable die head and fixing die head second dipping runner
Flow out.
The invention has the beneficial effects as follows: each discharging opening of melt distribution runner is connected with dipping runner, so can control
Discharge pressure makes to obtain safe dipping by the continuous fiber of preimpregnation；Dipping runner forms closed chamber after populated hot-melt resin
Body, thus reduce and air contact, and the corrugated centre-to-centre spacing of S that formed of the inner arc of two movable die heads of adjustable or
Person's Wave crest and wave trough regulates the tension force of continuous fiber in process of production, thus can solve how to make continuous fiber impregnate
Entirely, melt pressure and flow equalization, continuous fiber be uniformly dispersed in dipping runner, tension force is controlled.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the melt impregnation equipment of continuous fiber reinforced thermoplastic resin, wherein eliminates the work on the right
Dynamic model head；
Fig. 2 is the schematic diagram of two movable die heads；
Fig. 3 is the schematic diagram of distributor and dipping runner；
Fig. 4 is partial enlarged drawing at the A in Fig. 3；
Fig. 5 is the schematic diagram of distributor；
Fig. 6 is the left side schematic diagram of distributor；
1. heads in figure, 11. fix die head, 111. cavitys, 12. movable die heads, 121. outer ends, in the middle of 122.
End, 123. tops, 124. first dipping runners, 125. second dipping runners, 126. first melts distribution runners, 127.
Second melt distributes runner, 128. first movable die heads, 129. second movable die head, 2. distributor, 3. continuous fibers, 4. squeezes
Go out machine.
Detailed description of the invention
Refer to Fig. 1 to Fig. 6, the melt impregnation equipment of the continuous fiber reinforced thermoplastic resin in figure, including a machine
1 and two distributors 2.Head 1 is mainly used for the dipping providing internal cavities for continuous fiber, and distributor 2 is used for spraying
Going out molten resin makes continuous fiber be impregnated.Head 1 and distributor 2 are integral type structure, make the melt impregnation of continuous fiber 3
Processing integration, disposal molding.
Head 1 includes a fixing die head 11 and two movable die heads 12.Fixing die head 11 is in use all the time
Remaining stationary as, it is mainly used for installation activity die head 12.For installation activity die head 12, the internal processing of this fixing die head 11
Have and place and the cavity of connection above-mentioned two activity die head 12, in the middle of this cavity, become X-shaped.The outer end of each movable die head 12
121 squarelys, intermediate ends 122 triangularity, top 123 are arc；Square structure is mainly used in the level fortune of continuous fiber 3
Go and facilitate thermoplastic melt that continuous fiber 3 is impregnated；Intermediate ends 122 triangularity and top 123 camber are main
For regulation at the tension force of continuous fiber 3, thus can solve how to make continuous fiber 3 impregnate completely, melt pressure and flow
Equilibrium, continuous fiber 3 are uniformly dispersed in dipping runner, and tension force is controlled.Above-mentioned two activity die head 12 wherein first
Movable die head 128 middle and upper part and fixing die head 11 have the first dipping runner 124, middle and lower part and fixing die head 11 gapless；The
Two movable die head 129 middle and upper parts have the second dipping runner with fixing die head 11 gapless, middle and lower part with fixing die head 11
125；First movable die head 128 inside has the first melt distribution runner 126, and the hot melt spout alignment of distributor 2 is above-mentioned
First melt distribution runner 126, such first dipping runner 124 forms airtight cavity after populated hot-melt resin, thus subtracts
Less and air contact.Adjustment activity die head 12 for convenience is in the position within fixing die head 11, especially first activity
Process a hole in the middle of die head 128 and second movable die head 129, carry out the most as required moving outwardly or inwardly.
In order to buffer the dipping process of continuous fiber 3 and heatmeltable resin, make top on the left of the first melt distribution runner 126 especially
Highly form gap structure less than the height on the top on right side.Above-mentioned is to carry out single-side impregnated to continuous fiber 3, in order to even
Continuous fiber 3 carries out two-sided dipping, also sets especially above the outer end 121 of first movable die head 128 and intermediate ends 122 intersection
Having a second melt distribution runner 127, this second melt distribution runner 127 is in the opposite side of the first dipping runner 124；?
This second melt distribution runner 127 also is provided with a distributor 2 equally.
The structure of distributor 2 is prior art, and it has multiple branch flow passage, and its structure refers to Publication No.
The patent of CN102848489A.Molten resin in distributor uses extruder 4 to extrude.
The process that continuous fiber is impregnated by the said equipment comprises the steps: that first continuous fiber 3 is by first work
The first dipping runner 124 between dynamic model head 128 and fixing die head 11 enters, and is then passed through fixing die head 11 middle cavity 111
Position, finally flows out from the second dipping runner 125 between second movable die head 129 and fixing die head 11；Then thermoplasticity
Melt goes out in above-mentioned two dipping flow passage through the branch flow passage at different levels of two distributors 2, and dipping runner is formed airtight
Cavity, thermoplastic melt carries out two-sided dipping to continuous fiber 3；Eventually pass the continuous fiber 3 of melt impregnation from second work
The second dipping runner 125 between dynamic model head 129 and fixing die head 11 flows out.
Claims (4)
1. the melt impregnation equipment of continuous fiber reinforced thermoplastic resin, it is characterised in that: include head and distributor；Head bag
Include a fixing die head and two movable die heads；Fixing die internal has to be placed and the sky of connection above-mentioned two activity die head
Chamber, becomes X-shaped in the middle of this cavity；The outer end squarely of each movable die head, intermediate ends triangularity, top are arc；On
Stating two movable die heads wherein first movable die head middle and upper part and have the first dipping runner with fixing die head, middle and lower part is with fixing
Die head gapless；Second movable die head middle and upper part has the second dipping with fixing die head gapless, middle and lower part with fixing die head
Runner；First movable die internal has the first melt distribution runner, and the hot melt spout alignment above-mentioned first of distributor melts
Body distribution runner.
2. according to the melt impregnation equipment of the continuous fiber reinforced thermoplastic resin described in claim 1, it is characterised in that:
It is respectively provided with a hole in the middle of described first movable die head and second movable die head.
3. according to the melt impregnation equipment of the continuous fiber reinforced thermoplastic resin described in claim 1, it is characterised in that:
The height on the top on the left of described first melt distribution runner forms gap structure less than the height on the top on right side.
4. according to the melt impregnation equipment of the continuous fiber reinforced thermoplastic resin described in claim 1, it is characterised in that:
Also have above the outer end of described first movable die head and intermediate ends intersection one second melt distribution runner, this second melt
Body distribution runner is in the opposite side of the first dipping runner；A distributor it also is provided with equally at this second melt distribution runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692330.1A CN104369285B (en) | 2014-11-27 | 2014-11-27 | The melt impregnation Apparatus and method for of continuous fiber reinforced thermoplastic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692330.1A CN104369285B (en) | 2014-11-27 | 2014-11-27 | The melt impregnation Apparatus and method for of continuous fiber reinforced thermoplastic resin |
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| Publication Number | Publication Date |
|---|---|
| CN104369285A CN104369285A (en) | 2015-02-25 |
| CN104369285B true CN104369285B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410692330.1A Active CN104369285B (en) | 2014-11-27 | 2014-11-27 | The melt impregnation Apparatus and method for of continuous fiber reinforced thermoplastic resin |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815870A (en) * | 2019-08-26 | 2020-02-21 | 山东格瑞德集团有限公司 | Special pressurizing preimpregnation die head for fiber reinforced plastic sheet machine |
| CN111844521B (en) * | 2020-06-19 | 2022-07-08 | 哈尔滨工业大学 | Melt impregnation device and preparation method of continuous fiber reinforced thermoplastic prepreg tape |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0513927B1 (en) * | 1991-05-16 | 1995-12-06 | Shell Internationale Researchmaatschappij B.V. | Resin-impregnation of fibers |
| BR112012011531B1 (en) * | 2009-12-09 | 2019-08-20 | Toray Industries, Inc | METHOD FOR PRODUCING A LONG FIBER SPINNING FABRIC |
| CN102848489A (en) * | 2012-09-26 | 2013-01-02 | 金发科技股份有限公司 | Continuous melting dipping machine head and method for forming long fiber reinforced thermoplastic resin |
| CN204249147U (en) * | 2014-11-27 | 2015-04-08 | 陶小弟 | The melt impregnation equipment of continuous fiber reinforced thermoplastic resin |
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Effective date of registration: 20190808 Address after: 318000 Huajing Mingyuan Building, Jiaojiang District, Taizhou City, Zhejiang Province, Room 1603, Unit 1 Patentee after: Huang Fuhe Address before: 215427 No. 2-191, West Ring Road, Huangjing Town, Taicang City, Suzhou City, Jiangsu Province Co-patentee before: Li Panpan Patentee before: Tao Xiaodi |
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