CN108973163A - A kind of fiber reinforced thermolplastic composite material impregnation mold - Google Patents
A kind of fiber reinforced thermolplastic composite material impregnation mold Download PDFInfo
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- CN108973163A CN108973163A CN201810947821.4A CN201810947821A CN108973163A CN 108973163 A CN108973163 A CN 108973163A CN 201810947821 A CN201810947821 A CN 201810947821A CN 108973163 A CN108973163 A CN 108973163A
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0061—Moulds or cores; Details thereof or accessories therefor characterised by the configuration of the material feeding channel
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a kind of fiber reinforced thermolplastic composite material impregnation molds, including being equipped with into the die cavity body of fine channel and melt flow channel, being detachably arranged the die head of outlet for closing the die cavity body and being mounted on the intracorporal S type dipping flow channel component of die cavity, the die cavity body includes lower mold body and the upper die body that is removably attached in the lower mold body, the S type dipping flow channel component includes the more convex surface rollers being removably attached in the die cavity, and the spacing between two neighboring convex surface roller is adjustable；Along the direction of travel of fiber impregnation process, the convex surface direction of the convex surface roller is arranged alternatively up and down.The preparation of continuous fiber reinforced thermoplastic composite material or long fiber reinforced thermoplastic composites can be realized without replacing unitary mould in fiber reinforced thermolplastic composite material impregnation mold provided by the invention.
Description
Technical field
The present invention relates to dip forming mould applications, and in particular to a kind of fiber reinforced thermolplastic composite material dipping
Mold.
Background technique
With era development and social progress, fiber reinforcement thermosetting composite material can not meet the ring of people's growing interest
It protects, Ke Xunhuanliyong green idea.People gather sight coke in the exploitation of fiber reinforced thermolplastic composite material, from short fibre
Dimension enhancing composite material arrives continuous fiber reinforced composite materials to long fiber reinforcement composite material again, and fibre length steps up,
Material property has also obtained tremendous raising.The mechanical property of continuous fiber reinforced composite materials has reached general fibre strengthening material
5~8 times of material.Fiber reinforced thermolplastic composite material with it can be recycled, low-density have both excellent mechanical performance and again
It is grown rapidly by favor, corresponding manufacturing technology is also constantly improved and improved.
Long fiber reinforced thermoplastic composites (LFT) flourish at home, especially obtain in auto industry field
To tremendous development, such as front end frame, door module, bumper, mud guard, bottom backplate, instrument board, armrest support product.
Continuous fiber reinforced thermoplastic composite material (CFRTP) is because its fibre length is longer, higher performance is LFT product
Supplement continues and upgrades.In passenger car field, realization is used in combination to mould Dai Gang, such as front end with LFT material as supporting material
Frame, door module, chair framework, foot pedal, center armrest, standby cover plate etc.；In commercial vehicle field, anticollision can be prepared into
Plate, car body, side skirt etc..CFRTP tool has been widely used, and has carried out promoting at home and trial production is with wide
Market prospects and application space.
The technique of production LFT and CFRTP mainly has powder infusion, coating dipping and melt impregnation both at home and abroad at present.Wherein,
Melt impregnation refer to fibre bundle through exhibition yarn under some tension or be combined after expanding yarn processing with the resin melt of melting and
It is impregnated.
As 102218829 A of Publication No. CN Chinese patent literature in disclose a kind of continuous/long fiber reinforcement thermoplastic
Property composite material impregnation mold and its application method, technical requirements are to be provided with fiber impregnation runner in body, fiber leaching
The top of stain runner connects seal wire block, is provided with sub-wire hole on seal wire block, sub-wire hole is connected with fiber impregnation runner, body side
Portion is equipped with dipping melt feed inlet, and dipping melt feed inlet is communicated with fiber impregnation runner.Continuous fiber is through point on seal wire block
Wire hole enters impregnation mold and contacts with the thermoplastic resin of melting, through annular ripple revolving body mandrel and external surface shape therewith
Annular, corrugated between identical body cavity inner wall impregnate runner, and fibre bundle is forced expansion, dispersion, realizes resin pair
The dipping of fiber.In above-mentioned technical proposal, though refer to that the mold can be used for continuous fiber/long fiber reinforcement thermoplastic composite material
The production of material, but continuous fiber reinforced thermoplastic composite material and long fiber reinforced thermoplastic composites are morphologically deposited after all
In bigger difference, the design scheme of corresponding mouth mold is not referred in this scenario.In addition, continuous fiber reinforced thermoplastic composite material
It there is difference on fiber content and thickness with long fiber reinforced thermoplastic composites, the dipping runner of fiber is inevitable
It needs to adjust, and produces two kinds of different materials of form with identical dipping runner in the program, it is caused the result is that must
So there is a kind of performance of material that preferable effect is not achieved.Therefore, do not make any adjustment in mold dipping runner and do not propose to close
In the case where managing die mold desing, it is not particularly suited for producing two distinct types of composite material simultaneously.
It is for another example disclosed in the Chinese patent literature of Publication No. CN 103847042A a kind of for continuous fiber and resin
The particular manufacturing craft of synthesis, including fiber impregnation mold and resin extruded mechanism；Fiber impregnation mold includes upper die and lower die；Upper mold
Include three areas, respectively feed zone, Dilvar zone, adjustment area along the continuous fiber direction of motion with the cavity of lower die cooperation, wherein
The gap of feed zone is 3-10mm, and there are three trough and two wave crests for tool；The angle that trough and wave crest are formed is 120-150
Degree；The gap of Dilvar zone is 1-3mm, and tool is 100-120 there are three the angle that trough and two wave crests, trough and wave crest are formed
Degree；The gap for adjusting area is 0.3-1mm, and the angle of generally " V " font, two bevel edges formation of " V " font is
80-110 degree.The technical solution can solve the technical problem for how making the resin distribution in continuous fiber surface uniform.However,
The particular manufacturing craft of the technical solution is simply possible to use in continuous fiber and resins synthesis.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of fiber reinforced thermolplastic composite material impregnation mold, nothings
Unitary mould, which need to be replaced, can be realized continuous fiber reinforced thermoplastic composite material or long fiber reinforced thermoplastic composites
Preparation.
Specific technical solution is as follows:
A kind of fiber reinforced thermolplastic composite material impregnation mold, including being equipped with the die cavity into fine channel and melt flow channel
Body, the die head for being detachably arranged outlet for closing the die cavity body and it is mounted on the intracorporal S type dipping runner of die cavity
Component, the die cavity body include lower mold body and the upper die body that is removably attached in the lower mold body；
The S type dipping flow channel component includes the more convex surface rollers being removably attached in the die cavity, two neighboring
Spacing between convex surface roller is adjustable；
Along the direction of travel of fiber impregnation process, the convex surface direction of the convex surface roller is arranged alternatively up and down.
S type dipping flow channel component is arranged in the present invention in the die cavity body of impregnation mold, and impregnates each runner group by adjusting S type
The spacing of convex surface roller in part, to adapt to produce different types of fiber reinforced thermolplastic composite material.
Preferably, described to be designed in lower mold body into fine channel, melt flow channel and S type dipping flow channel component；Under described
The length of die body is 50~1000mm, and width is 50~1000mm.
The melt flow channel is connected with rack-style melt distribution mold or branch type melt distribution mold, between melt flow channel
Gap uses 1~3mm, and with vertical plane there are 0~2 ° of gradient, runner forms certain melt pressure by wide constriction.According to melt
Flow select specific gap.
Preferably:
The convex surface roller includes roll body and the rectangle fixing end on the roll body both ends, and the abaculus is equipped with and institute
State the compatible stepped groove of rectangle fixing end or rectangular channel；
The contour line of the cross section of the roll body includes straight line and the circular arc line that is connected with the straight line.
Further preferably, the height of the convex surface roller is 5~10mm, and the corresponding diameter of the circular arc line is 10~50mm.
If by way of stepped groove, for fixing the rectangle fixing end on the roll body both ends, list can be used in the abaculus
The mode of stepped groove (being denoted as unilateral abaculus) is arranged in side, and the side that bilateral is respectively provided with stepped groove (being denoted as bilateral abaculus) can also be used
Formula；The rectangle fixing end on the roll body both ends is embedded in and is fixed by two neighboring abaculus corresponding stepped groove.
Preferably, the length of the abaculus is 12~80mm, and width is 10~40mm.
Preferably, stepped hole compatible with screw is additionally provided on the abaculus, and solid by screw and the lower mold body
Even.
Preferably:
The screw hole that a row is equally spaced along the direction of travel with the first spacing, every piece of institute are equipped in the lower mold body
The length for stating abaculus is equal to first spacing.
By screw and the screw hole, the abaculus can be fixedly connected in the lower mold body.
Preferably:
The S type dipping flow channel component further includes the limited block for being inserted between adjacent two pieces of abaculus, the limited block
Length be first spacing integral multiple.
By being added or removing the limited block, the spacing that may be implemented between two neighboring convex surface roller is adjusted, and then is adjusted
The contact length for saving fiber impregnation tension and fiber and convex surface roller roll surface plays key to the conversion production of LFT and CFRTP
Property effect.
Preferably:
LFT composite material is combined using big spacing convex surface roller, facilitates melt and overmolded.CFRTP composite material is because of fibre
Dimension hplc is high, thickness is thin, effect of impregnation is high, need to be combined using small spacing convex surface roller, to reach the infiltration of high-content fiber and dispersion
Purpose.
For preparing continuous glass fibre reinforced polyamide composite material, because continuous glass fibre enhances thermoplastic composite
The glass fiber content of material requirements is high, and amount of resin is few, and melt pressure is relatively small, by the way that at least 2 groups of convex surface rollers are arranged, and using contracting
Short convex surface roller spacing increases tension to enhance impregnation pressure and fiber degree of scatter.As melt tightening runner reduces, melt exists
The area filling, melt Fast Filling fibre gap remove gas side by side, form through die head, can prepare with a thickness of 0.2~0.6mm fibre
The continuous fiber reinforcement polyamide prepreg tape that dimension hplc is 50~70%.
For preparing continuous glass fiber reinforced polypropylene composite material, because continuous glass fibre enhances thermoplastic composite
The glass fiber content of material requirements is high, and amount of resin is few, and melt pressure is relatively small, while melt polypropylene viscosity is big, passes through setting
At least 2 groups of convex surface rollers, and convex surface roller spacing reinforcing fiber tension and melt cavity are shortened using gradual change type, prevent fiber because of tension
It is excessive and be broken.As melt tightening runner reduces, melt is in the area filling, the degasification side by side of melt Fast Filling fibre gap
Body is formed through die head.It is pre- that the continuous fiber reinforced polypropylene for being 50~70% with a thickness of 0.2~0.6mm fiber content can be prepared
Soak band.
For preparing long glass fiber reinforced polypropylene composite material, because long glass fibres enhances thermoplastic composite
Middle resin content is high, and melt pressure is relatively large, while melt polypropylene viscosity is big, to guarantee that fiber can be infiltrated, and can quilt
Uniformly cladding, causes resin to fluctuate at undaform so should be avoided and tension fluctuation occur, it is proposed that uses equidistant formula convex surface roller
Arrangement.As melt tightening runner reduces, melt removes gas in the area filling, melt Fast Filling fibre gap side by side, passes through
Mouth mold molding.The long fibre particle that fiber content is 20~50% can be prepared.
In the present invention, for the die cavity body configured with die head described in one group, die head described in described one group includes more than two classes
The die head of type.
Preferably:
Die head described in described one group includes continuous fiber reinforced thermoplastic composite material die head, including die body, with it is described
First melt of the outlet of die cavity body tightens runner and tightens the depanning flat mouth that runner is connected to first melt；
It further include die lip tabletting, fine adjustment screw.
It is further preferred:
The tabletting with a thickness of 5~20mm, width is 10~30mm；
The fine adjustment screw uses M6~M24, reaches adjustment continuous fiber reinforced thermoplastic composite wood by adjusting screw
The uniformity of media sheet thickness；
The melt tightens runner, and gradient existing for slope surface and horizontal plane is 15~45 °, and runner, which tightens, establishes melt pressure
Power facilitates the gas excluded in melt and impregnates fiber again；
The gap of the depanning flat mouth is that 0.5~1.5mm selects clearance distance according to different surface density demands
It selects.
Preferably:
Die head described in described one group includes long fiber reinforced thermoplastic composites die head, including die body and the mould
Second melt of the outlet of cavity tightens runner and tightens the depanning round mouth that runner is connected to second melt.
It is further preferred:
It is 15~45 ° that the melt, which tightens gradient existing for its slope surface of runner and horizontal plane, and runner, which tightens, establishes melt pressure
Power facilitates melt coating on fiber；
The aperture of the depanning round mouth is that 2~6mm selects aperture according to the content demand of different fibers.
Compared with prior art, the present invention has the advantage that
The present invention provides a kind of universal fiber reinforced thermolplastic composite material impregnation molds, whole without replacing
In the case where mold, realizes that the production mould of LFT and CFRTP shares, equipment investment and place of production investment can be saved.
The present invention impregnates flow channel component by the way that S type is arranged in the die cavity body of impregnation mold, and impregnates and flow by adjusting S type
The spacing of convex surface roller in road component, reaches very good dipping effect；Especially for different basis materials, as PP, PA,
PPS etc. finds best infiltration angle and convex roller arc contact surface length according to different viscosities feature, and technique for fixing parameter into
Row production reduces because different matrix causes to repeat die sinking and repairs a die, reaches best dipping effect.
Impregnation mold of the invention is designed using combination-inlaying formula structure, once there is big face in convex surface roller or out die orifice
Product abrasion, can fast implement replacement, and saving largely repairs a die the period.
Detailed description of the invention
Fig. 1 is the perspective view that fiber reinforced thermolplastic composite material impregnation mold of the invention omits upper die body；
Fig. 2 is at the center of impregnation mold along mold longitudinal sectional drawing；
Fig. 3 is the edge of impregnation mold along mold longitudinal sectional drawing；
The perspective view, left view and main view of convex surface roller are from top to bottom followed successively by Fig. 4；
The sectional view of one-sided groove abaculus, bilateral groove abaculus and limited block is from top to bottom followed successively by Fig. 5；
From top to bottom be followed successively by Fig. 6 the enhancing thermoplastic composite mouth mold of continuous glass-fiber in embodiment 1 perspective view,
Main view and sectional view along the direction C-C；
The combination of S type dipping flow channel component in embodiment 1 is provided in Fig. 7；
The combination of S type dipping flow channel component in embodiment 2 is provided in Fig. 8；
The perspective view of long glass fiber reinforced thermoplastic composite mouth mold, master in embodiment 3 are from top to bottom followed successively by Fig. 9
View and sectional view along the direction C-C；
The combination of S type dipping flow channel component in embodiment 3 is provided in Figure 10；
In formula:
1- upper die body, 2- lower mold body, 3- die head；
21- is into fine channel, 22- melt flow channel, 23- convex surface roller, 24- abaculus, 25- limited block, 26- screw hole, and 31- is continuously fine
Dimension enhancing thermoplastic composite die head, 32- long fiber reinforced thermoplastic composites die head；
231- roll body, 232- rectangle fixing end, 241- stepped groove, 242- stepped hole.311- die body, the contracting of the first melt of 312-
Tight runner, 313- depanning flat mouth, 314- die lip tabletting, 315- fine adjustment screw, 321- die body, the second melt of 322- tighten runner,
323- depanning round mouth.
Specific embodiment
1 continuous glass fibre reinforced polyamide composite material of embodiment
Referring to attached drawing, fiber reinforced thermolplastic composite material impregnation mold of the invention includes die cavity body and one group of mould
Head；Die cavity body is made of upper die body 1 and lower mold body 2, and die head 3 is removably mountable to the exit of die cavity body, is used for closed die
Cavity.
The length of upper die body 1 is that 800mm, width 700mm are connected with a thickness of 30mm by hexagon socket head cap screw and lower mold body 2
It connects.
The length and width of lower mold body 2 is identical with upper die body 1, with a thickness of 80mm.Lower mold body 2 is equipped with into fine channel 21
With melt flow channel 22 and be mounted on die cavity intracorporal S type dipping flow channel component；A row is additionally provided in lower mold body 2 along fiber impregnation
The screw hole 26 that the direction of travel of process is equally spaced.
S type dipping flow channel component is arranged in close to the outlet side of die cavity body, including several convex surface rollers 23, several abaculus 24
And several limited blocks 25.
Convex surface roller 23 is fixed in die cavity, the rectangle fixing end 232 including roll body 231 and on 231 both ends of roll body.Roller
231 length of body is 600mm, and the contour line of cross section includes straight line and the circular arc line that is connected with straight line.Rectangle fixing end 232
Cross section be in rectangle, length 30mm, width 15mm.
Abaculus 24 is equipped with the stepped groove 241 being adapted to rectangle fixing end phase 232, the stepped groove of two neighboring abaculus 24
241 is staggered relatively, and the groove being combined into is adapted with the shape of the cross section of rectangle fixing end 232.It can adopt as the case may be
The mode of stepped groove (being denoted as bilateral abaculus) is respectively provided with the mode or bilateral of unilateral setting stepped groove (being denoted as unilateral abaculus).It is embedding
It is additionally provided with stepped hole 242 on block 24, abaculus 24 can be consolidated using screw by the screw hole 26 on stepped hole 242 and lower mold body 2
Surely it is connected in lower mold body 2.The length of abaculus 24 is equal to the spacing of screw hole in lower mold body 2.
Limited block 25 is for being inserted between adjacent two pieces of abaculus 24, and the length is the integral multiples of 24 length of abaculus.By adding
Enter or remove limited block, the spacing that may be implemented between two neighboring convex surface roller is adjusted.
Continuous fiber reinforced thermoplastic composite material die head 31 is used in the present embodiment, continuous fiber reinforced thermoplastic is multiple
Condensation material tightens runner 312, depanning flat mouth 313, die lip tabletting 314 and fine tuning spiral shell including die body 311, the first melt with die head 31
Silk 315.
First melt tightens runner 312 and is connected to respectively with the outlet of die cavity body and depanning flat mouth 313.
Its length of die lip tabletting 314 620mm, width 15mm, one long side are connected with die head ontology, two sides not with die head
Ontology is connected, and fine adjustment screw is facilitated to carry out gap adjustment.
Fine adjustment screw 315 uses M12 × 35.
In the present embodiment, continuous glass fibre, which is passed through into fine channel 21, enters impregnation mold, and polyamide melt is through melt flow channel
22 enter impregnation mold, and after mixing, fiber and polyamide melt impregnate flow channel component, this implementation by S type under draw
The combination of S type dipping flow channel component is shown in Fig. 7 in example.Keep impregnation zone length constant, a combination thereof are as follows: first lower convex surface
Roller is divided into 2 unilateral abaculus and 1 long limited block between second upper convex surface roller；Convex surface under second upper convex surface roller and third root
Roller is fixed by single bilateral abaculus；Convex surface roller is divided into 2 unilateral abaculus and 1 short limit between the 4th upper convex surface roller under third root
Position block；4th upper convex surface roller and the 5th lower convex surface roller are fixed by single bilateral abaculus.The size of each component is listed in the following table 1
In.
Table 1
Because the glass fiber content that continuous glass fibre enhancing thermoplastic composite requires is high, amount of resin is few, melt pressure phase
To smaller, the spacing (at least 2 groups) by shortening convex surface roller increases tension to enhance impregnation pressure and fiber degree of scatter.With
Melt is tightened runner and is reduced, and melt removes gas side by side, form through die head 3 in the area filling, melt Fast Filling fibre gap,
It can prepare with a thickness of 0.2~0.6mm, the continuous fiber reinforcement polyamide prepreg tape that fiber content is 50~70%.
2 continuous glass fiber reinforced polypropylene composite material of embodiment
Impregnation mold in the same manner as in Example 1 is used in the present embodiment, difference is only that the group of S type dipping flow channel component
Conjunction mode is different, is specifically shown in Fig. 8, keeps impregnation zone length constant, a combination thereof are as follows: first lower convex surface roller to second it is convex
2 unilateral abaculus and 1 long limited block are divided between the roller of face；2 lists are divided between convex surface roller under second upper convex surface roller to third root
Side abaculus；Convex surface roller is to being divided into 2 unilateral abaculus under third root between the 4th upper convex surface roller；4th is gone up convex surface roller and the 5th
Lower convex surface roller is fixed by single bilateral abaculus.The size of each component is identical with embodiment 1.
Because the glass fiber content that continuous glass fibre enhancing thermoplastic composite requires is high, amount of resin is few, melt pressure phase
To smaller, while melt polypropylene viscosity is big, by gradual change type shorten convex surface roller spacing (at least 2 groups) reinforcing fiber tension and
Melt cavity, protection fiber are broken because of overtension.As melt tightening runner reduces, melt is in the area filling, melt
Fast Filling fibre gap removes gas side by side, forms through die head.The continuous fiber reinforcement that fiber content is 50~70% can be prepared
Polypropylene prepreg tape.
3 long glass fiber reinforced polypropylene composite material of embodiment
Long fiber reinforced thermoplastic composites die head 32, long fiber reinforcement thermoplastic composite material are used in the present embodiment
Material tightens runner 322 with die head 32 including die body 321, with the second melt of the outlet of die cavity body and contracts with the second melt
The depanning round mouth 323 that tight runner 322 is connected to.
The structure of die cavity body is in the same manner as in Example 1, and difference is only that the combination of S type dipping flow channel component is different,
It is specifically shown in Figure 10, keeps impregnation zone length constant, a combination thereof are as follows: first lower convex surface roller is divided between second upper convex surface roller
2 unilateral abaculus and 1 short limited block；2 unilateral abaculus are divided under second upper convex surface roller to third root between convex surface roller；Third
Convex surface roller is to being divided into 2 unilateral abaculus under root between the 4th upper convex surface roller；4th upper convex surface roller and the 5th lower convex surface roller are by 2
A unilateral side abaculus is fixed.
Because resin content is high in long glass fibres enhancing thermoplastic composite, melt pressure is relatively large, while poly- third
Alkene melt viscosity is big, to guarantee that fiber can be infiltrated, and can uniformly be coated, be caused so should be avoided and tension fluctuation occur
Resin is fluctuated at undaform, is arranged by equidistant formula convex surface roller.As melt tightening runner reduces, melt in the area filling,
Melt Fast Filling fibre gap removes gas side by side, forms through die head.
Claims (8)
1. a kind of fiber reinforced thermolplastic composite material impregnation mold, including being equipped with the die cavity into fine channel and melt flow channel
Body, the die head for being detachably arranged outlet for closing the die cavity body and it is mounted on the intracorporal S type dipping runner of die cavity
Component, the die cavity body include lower mold body and the upper die body that is removably attached in the lower mold body, it is characterised in that:
The S type dipping flow channel component includes the more convex surface rollers being removably attached in the die cavity, two neighboring convex surface
Spacing between roller is adjustable；
Along the direction of travel of fiber impregnation process, the convex surface direction of the convex surface roller is arranged alternatively up and down.
2. fiber reinforced thermolplastic composite material impregnation mold according to claim 1, it is characterised in that:
The convex surface roller includes roll body and the rectangle fixing end on the roll body both ends, and the abaculus is equipped with and the square
The compatible stepped groove of shape fixing end or rectangular channel；
The contour line of the cross section of the roll body includes straight line and the camber line that is connected with the straight line.
3. fiber reinforced thermolplastic composite material impregnation mold according to claim 1, it is characterised in that:
The abaculus is equipped with stepped hole compatible with screw, and is connected by screw and the lower mold body.
4. fiber reinforced thermolplastic composite material impregnation mold according to claim 1, it is characterised in that:
The screw hole that a row is equally spaced along the direction of travel with the first spacing is equipped in the lower mold body, every piece described embedding
The length of block is equal to first spacing.
5. fiber reinforced thermolplastic composite material impregnation mold according to claim 4, it is characterised in that:
The S type dipping flow channel component further includes the limited block for being inserted between adjacent two pieces of abaculus, the length of the limited block
Degree is the integral multiple of first spacing.
6. fiber reinforced thermolplastic composite material impregnation mold according to claim 1, it is characterised in that:
For the die cavity body configured with die head described in one group, die head described in described one group includes the die head of more than two types.
7. fiber reinforced thermolplastic composite material impregnation mold according to claim 6, it is characterised in that:
Die head described in described one group includes continuous fiber reinforced thermoplastic composite material die head, including die body and the die cavity
First melt of the outlet of body tightens runner and tightens the depanning flat mouth that runner is connected to first melt；
It further include die lip tabletting, fine adjustment screw.
8. fiber reinforced thermolplastic composite material impregnation mold according to claim 6, it is characterised in that:
Die head described in described one group includes long fiber reinforced thermoplastic composites die head, including die body and the die cavity body
The second melt of outlet tighten runner and tighten the depanning round mouth that runner is connected to second melt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947821.4A CN108973163B (en) | 2018-08-20 | 2018-08-20 | Impregnation die for fiber reinforced thermoplastic composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947821.4A CN108973163B (en) | 2018-08-20 | 2018-08-20 | Impregnation die for fiber reinforced thermoplastic composite material |
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| CN108973163B CN108973163B (en) | 2020-07-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808197A (en) * | 2019-01-30 | 2019-05-28 | 江苏集萃先进高分子材料研究所有限公司 | A kind of continuous fiber reinforced thermoplastic composite material molding machine |
| CN111113719A (en) * | 2019-12-27 | 2020-05-08 | 上海普利特复合材料股份有限公司 | Fiber impregnation die with adjustable tension and low material stagnation amount |
| WO2021036045A1 (en) * | 2019-08-26 | 2021-03-04 | 山东格瑞德集团有限公司 | Specialized pressurizing pre-impregnation die head for fiber-reinforced plastic sheet extruder |
| CN112847924A (en) * | 2021-01-07 | 2021-05-28 | 中广核俊尔(浙江)新材料有限公司 | Low-emission, low-fiber-floating, low-warpage and ultra-dispersed long glass fiber polyamide composite material and preparation method thereof |
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| CN113789628A (en) * | 2021-10-15 | 2021-12-14 | 江西省纳米技术研究院 | Cambered surface roller for flattening fibers, fiber flattening device and application thereof |
| CN114770978A (en) * | 2022-04-15 | 2022-07-22 | 哈尔滨工业大学 | Device and method for preparing composite material rib by using thermoplastic fiber reinforced resin-based prepreg tape |
| CN114770978B (en) * | 2022-04-15 | 2024-04-12 | 哈尔滨工业大学 | Device and method for preparing composite material rib by using thermoplastic fiber reinforced resin-based prepreg tape |
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