CN108527840A - Twist continuous fiber fusion sediment 3D printing wire feeder and application - Google Patents
Twist continuous fiber fusion sediment 3D printing wire feeder and application Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
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Abstract
The invention discloses a kind of twisting continuous fiber fusion sediment 3D printing wire feeder and applications, the printing wire feeder, including top are equipped with the charging basket and printing wire feeding head of main feed mouth, and printing wire feeding head is located at the bottom of charging basket, it is connected with power plant, printing wire feeding head includes：Bowl-shape wire feeding head main body, be arranged wire feeding head main body inner wall groove and the passive rotation component in wire feeding head body outer wall is set, spinning nozzle is arranged in the end of the wire feeding head main body, and passive rotation component is connected with power plant；The present invention can be used for fiber twisting, prepare the base type of the 3D products for the continuous fiber reinforced composite materials that layer upon layer is formed.Present invention process is simple, efficient, has both been suitble to single-piece or small lot production, also is adapted for a large amount of printers and is carried out at the same time high-volume 3D printing production, has broad application prospects.
Description
Technical field
The present invention relates to a kind of twisting continuous fiber fusion sediment 3D printing wire feeders.
Background technology
3D printing, also referred to as increasing material manufacturing, be according to the data of three-dimensional CAD being pre-designed, by 3D printing equipment,
Successively increase material to manufacture the technology of three-dimensional objects.
Compared with traditional manufacturing technology, 3D printing need not manufacture mold in advance, it is not necessary to which removal is a large amount of in the fabrication process
Material also can be obtained by final products without going through complicated casting, forging, welding procedure, therefore, can be in production
It realizes structure optimization, save material and saves the energy.
Currently, 3D printing technique is usually used in new product development, rapid prototyping, single-piece and parts in small batch manufacture, complex shape
The manufacture of shape part, the design of mold and manufacture etc. are also suitable for the manufacture, configuration design inspection, assembly inspection of difficult-to-machine material
Test with Rapid reverse engineering etc..This high-new manufacturing technology based on material stacking method of 3D printing receives both at home and abroad increasingly
Extensive concern, will facilitate a kind of novel mode of production, have vast potential for future development.
3D printing technique has 3DP technologies, FDM melt-laminated molding technologies, SLA stereolithography techniques, the constituencies SLS
Laser sintered, DLP laser forming technologies and UV UV molding technologies, technology difference material therefor are then entirely different.
Wherein, fusion sediment (Fused Deposition Modeling, FDM) molding mechanical structure is most simple, if
Meter is also easiest to, and manufacturing cost and maintenance cost are also minimum, therefore FDM has become most popular 3D in the world today and beats
Print technology.Currently, the material applied to FDM techniques is substantially polymer, moulding material be generally PLA, PCL, PHA, PBS,
PA, ABS, PC, PS, POM, PVC, PP etc..
Compared with staple fiber, long fiber reinforcement composite material, continuous fiber reinforced composite materials are due to excellent power
, physics, anticorrosion antiwear and the performances such as antifatigue, in necks such as space flight and aviation, national defense and military, racing vehicle, robot and medical treatment
Domain shows huge application prospect.But using lay technology composite product is made in continuous fiber by conventional method, is needed
The processes such as pre-preg, dipping, molded, post-processing, technical process is complicated, of high cost, and is not suitable for parts with complex structures
Manufacture, cannot meet industrialization production requirements well.
Patent CN105172144A discloses the multistage wire feed print head of continuous fiber reinforced composite materials 3D printing, packet
The fiber duct for being fixed on level-one heat block upper surface (center) is included, fiber duct inner duct forms fiber channel, level-one larynx
Pipe is fixed on level-one heat block both sides, and level-one trunnion inner duct forms level-one inner duct, and high molecular material is worn from level-one inner duct
It crosses into level-one heat block melt chamber；Level-one heat block is fixed on above two level heat block, and two level trunnion is fixed on two level and adds
Heat block both sides, two level trunnion inner duct form two level inner duct, and high performance thermoplastic is passed into from two level inner duct
In two level heat block melt chamber；To be analogized with this identical structure, final all heat blocks are fixed on above final stage heat block,
Nozzle is fixed on final stage heat block lower surface, using multistage wire feed print head, well carries out continuous fiber with basis material
Multistage cladding, obtains the continuous fiber reinforced composite materials part with good comprehensive performance.
Blemish in an otherwise perfect thing, due to realizing that multistage cladding, fiber duct are designed in center, therefore every time can only be into a branch of company
Continuous fiber：If 1) using different fibers, due to the dipping sex differernce of fiber, multiple fiber compound tense may be by one
Definite limitation；2) same fiber, when fiber consumption is larger, it is contemplated that print speed, dipping effect may beat certain discount.
Patent CN105599302A discloses a kind of continuous fiber fusion sediment 3D printing method and application, will be continuous fine
Dimension is coextruded into 3D printing silk with polymer, and imported into fusion sediment 3D printer, heats molten polymer, continuous fine
Dimension is squeezed out with the polymer of melting by the nozzle of the printer, and layer upon layer forms continuous fiber reinforced composite materials production
Product.The invention solves multiple fiber Complex Problem by porous print head, and is coextruded by single screw rod and ensures dipping, mix
Close effect.Also it is exactly that continuous fiber is coextruded by single screw rod, following two problems may be brought：1) extrusion may be made
At the damage of a part of continuous fiber, mechanical performance is influenced；2) after continuous fiber is added, polymer malt viscosity increases, single spiral shell
Bar needs higher temperature to ensure mobility, and the decomposition that may be caused a part of auxiliary agent, impregnate object influences product smell；Together
When, continuous fiber is coextruded with polymer, and there is no give full play to the advantage of 3D printing.
Invention content
The object of the present invention is to provide one kind can twisting continuous fiber fusion sediment 3D printing wire feeder and application, with
Overcome defect of the existing technology.
The fibers melt deposition 3D printing wire feeder of the present invention that be used for that can continuously twist, including top are set
There are the charging basket and printing wire feeding head of main feed mouth, the printing wire feeding head is arranged in the bottom of the charging basket, and and power
Device is connected；
The printing wire feeding head includes：Groove in wire feeding head main body inner wall is arranged in bowl-shape printing wire feeding head main body
With the passive rotation component in wire feeding head body outer wall is set, spinning nozzle is arranged in the end of the wire feeding head main body, described
Passive rotation component be connected with power plant；
The twisting continuous fiber fusion sediment 3D printing wire feeder can be used for fiber twisting, prepare layer upon layer
The base type of the 3D products of the continuous fiber reinforced composite materials of formation.
Compared with prior art, the present invention has the advantages that：
Among continuous fiber is introduced into fusion sediment 3D printing by the present invention, the high temperature of conventional melt coextrusion is avoided
It decomposes, ensures the compatibility of fiber and matrix by dipping, the cohesive force between fiber is improved by twisting, improves fiber
Enhance the intensity of composite material, obtain low cost, it is low distribute, the continuous fibre that high-quality, high intensity, physical and chemical performance are excellent
Tie up fusion sediment 3D printing product, can both be fabricated to the industrial model such as aerospace, military project national defence, automobile, machinery,
Parts or product can also be fabricated to the product closely bound up with people's food, clothing, housing and transportation, as bicycle, sports goods,
Daily necessities, dress ornament etc. preferably meet multi-functional, high parameter, complexity, the social development demand of customization, can obtain
Than functional 3D printing product of traditional FDM 3D printings higher intensity higher modulus, production technology of the invention is relatively simple,
Process is few, production efficiency is high, required equipment is few, at low cost, has both been suitble to single-piece or small lot production, also has been adapted for a large amount of printers
It is carried out at the same time high-volume 3D printing production, is had broad application prospects.
Description of the drawings
Fig. 1 is the fibers melt deposition 3D printing wire feeder structural schematic diagram being used for that can continuously twist.
Fig. 2 is charging basket overlooking structure diagram.
Fig. 3 is printing wire feeding head structural schematic diagram.
Fig. 4 is sectional view along A-A in Fig. 3.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention is described in detail.
Referring to Fig. 1 and Fig. 2, the fibers melt deposition 3D printing wire feed dresses of the present invention that be used for that can continuously twist
It sets, including top is equipped with the charging basket 1 of main feed mouth 107 and printing wire feeding head 2, the printing wire feeding head 2 are arranged described
The bottom of charging basket 1, and be connected with such as motor of power plant 3；
Preferably, the top of the charging basket 1 is column 1055, and lower part is hollow centrum 105, the printing
Wire feeding head 2 is arranged by rotating member 205 such as bearing at the spinning nozzle 206 of 105 end of centrum；
Preferably, referring to Fig. 2, the charging basket 1 includes shell 101 and vertical clapboard 102, and the vertical clapboard 102 is vertical
It is arranged in the charging basket 1, both sides and bottom edge are connected with the inner wall of the charging basket 1, and vertical clapboard 102 is interior with charging basket 1
It is size chamber 103 between wall, is polymer melt chamber 106 between vertical clapboard 102, the bottom edge of vertical clapboard 102 is equipped with out wire hole
104, the top of size chamber 103 is equipped with size entrance 109；
The aperture for going out wire hole 104 is 1-2mm；
D：H=4~6：1；H：H1=1:1.1~1.2；
D is the internal diameter of shell 101, and H is the height of column, and H1 is the height of centrum；
Referring to Fig. 3 and Fig. 4, the printing wire feeding head 2 includes：
Bowl-shape wire feeding head main body 201, be arranged 201 inner wall of wire feeding head main body groove 202 and be arranged in wire feeding head master
The passive rotation component 203 of 201 outer wall of body such as gear, spinning nozzle 204 are arranged in the end of the wire feeding head main body 201, institute
The passive rotation component 203 stated is connected with power plant 3；The depth of the groove 202 is 3-5mm；Preferably, described
Groove 202 be centripetal diminution horn mouth slot；A diameter of 1-3mm of spinning nozzle 206；201 internal diameter 5-10mm of main body；
Preferably, the upper end of the power plant 3 is sleeved on outside the centrum 105, is equipped with sealing structure between the two
Part 204；
Preferably, the quantity of the vertical clapboard 102 is 2~10 pieces, and the quantity of the groove 202 is 2~10,
And the quantity of vertical clapboard 102 is identical as the quantity of groove 202；
The twisting continuous fiber fusion sediment 3D printing wire feeder can be used for fiber twisting, prepare layer upon layer
The base type of the 3D products of the continuous fiber reinforced composite materials of formation, application process include the following steps：
(1) by polymer, the mixture of coloring agent and other auxiliary agent melts, pass through extrusion device, such as twin-screw extrusion
Machine squeezes out, and polymer melt chamber 106 is sent by main feed entrance 107；
The auxiliary agent that other described auxiliary agents are known in the art, as in toughener, antioxidant or coloring agent it is a kind of with
On；
(2) infiltration chamber agent 103 is sent into size melting extrusion；
(3) continuous fiber is sent into size chamber from the fiber entry 107 on size chamber top respectively, and from lower part
Go out after wire hole 104 is pierced by, meanwhile, starting the power plant 3, fiber is twisted in printing 2 horizontal direction of wire feeding head rotation,
Polymer melt in polymer melt chamber 106 has wrapped up the fiber after twisting, the fiber from the lower end of printing wire feeding head 2
Outlet is pierced by, and obtains the 3D printing composite wire 7 of continuous lod, and layer upon layer forms continuous lod composite wood
Expect product base type；
In step (1), the residence time of the mixture is 30-100s；
In step (3), the residence time of the continuous fiber is 0.6-1s；
In step (4), the rotary speed of printing 2 horizontal direction of wire feeding head is 5-10r/min；
The weight percent dosage of each component is：
The sum of percentage of each component is 100%；
The one kind or more of the polymer in PLA, PCL, PHA, PBS, PA, ABS, PC, PS, POM, PVC, PP
" alloy " of kind composition, or " alloy " or mixture of other polymer or several polymer composition are selected as needed, it can
Using the product of sinopec, South Korea SK, Tao Shi Du Pont, France Arkema etc.；
The continuous fiber is glass fibre, ceramic fibre, metallic fiber, Kafra fiber, aramid fiber, nylon fibre
Dimension, polyethers fiber, polyester fiber, carbon fiber, graphite fibre, graphene fiber, carbon nano-tube fibre, acetate fiber, bave
In it is one or more, or according to actual needs, using continuous fiber made of other materials, the monofilament of the fiber is straight
Diameter is 10-20 μm, and fibre bundle is generally 1200-2400tex, or is fabricated to the wire rod of other diameters as needed.
Size used such as PP maleic anhydride grafts；
The ethylene-octene copolymer 8150 of toughener used such as Tao Shi；
[β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol ester of the antioxidant such as four or phosphorous acid
One or more of three (2,4- di-tert-butyl-phenyls) esters；
The coloring agent such as one or more of black B P3200 or titanium dioxide；
Obtained product base type, using the method including heating, catalysis, cross-linking radiation, by continuous fiber and adjuvant
Or/and matrix is combined closely, and continuous fiber reinforced composite materials product is made in blank, then uses side well known in the art
Method carries out entity assembling, connection, heat treatment, surface treatment, obtains the product of continuous fiber fusion sediment 3D printing, described
Known method can refer to method disclosed in CN201610035818.
The twist principle of the present invention is as follows：
Fiber after being impregnated by impregnating agent enters printing wire feeding head 2, by the melt packet of charging basket 1 by going out wire hole 104
While wrapping up in, due to print wire feeding head 2 rotation, melt simultaneously rotate cause fiber mutually to wind, be twisted, then due to
The pressure of the pushing of melt, the fiber of twisting and the melt being wrapped in outside the fiber of twisting are sprayed from spinning nozzle.
Embodiment 1
Using the device of Fig. 1~Fig. 4.
Device structure parameter：
The aperture for going out wire hole 104 is 1mm；D：H=4：1；H：H1=1:1.1；
D is the internal diameter of shell 101, and H is the height of column, and H1 is the height of centrum；
The depth of groove 202 is 3mm, and groove 202 is the horn mouth slot of centripetal diminution；A diameter of 3mm of spinning nozzle 206；
201 internal diameter 5mm of main body；
The quantity of vertical clapboard 102 is 4 pieces, and the quantity of groove 202 is 4；
Technological parameter：
200 ± 20 DEG C of melt chamber temperature, 180 ± 20 DEG C of size
Raw material：(weight)
It is the ethylene-octene copolymer 8150 of Tao Shi that PP, which uses the PPBX3500 of South Korea SK, toughener, and size is
The PP maleic anhydride grafts of Bondyram, continuous fiber are glass fibre, using the continuous fiber T838 in Mount Taishan, toughener
Using the ethylene-octene copolymer 8150 of Tao Shi, antioxidant is four [β-(3,5- di-t-butyl -4- hydroxyls of BASF AG
Phenyl) propionic acid] pentaerythritol ester；Coloring agent is Cabot black B P3200；
Application process：
(1) polymer, the mixture of toughener and coloring agent melt are squeezed out by double screw extruder and is sent into polymerization
Object melt chamber 106, residence time 30s
(2) infiltration chamber agent 103 is sent into size melting extrusion；
(3) continuous fiber is sent into size chamber from the fiber entry 107 on size chamber top respectively, and from lower part
Go out after wire hole 104 is pierced by, meanwhile, starting the power plant 3, fiber is twisted in printing 2 horizontal direction of wire feeding head rotation,
Polymer melt in polymer melt chamber 106 has wrapped up the fiber after twisting, the fiber from the lower end of printing wire feeding head 2
Outlet 108 is pierced by, and obtains the 3D printing composite wire 7 of continuous lod, and layer upon layer formation continuous lod is compound
Material product base type；Wherein：The residence time of continuous fiber is 1s, and the rotary speed of printing 2 horizontal direction of wire feeding head is 5r/
min；
To test its mechanical property, several test samples are had printed；(i.e. by gained sample and traditional static FDM methods
Method of the same race printing, but torque jet does not rotate), the obtained long glass fiber reinforced MODIFIED PP of conventional twin screw extruding pelletization method
Sample carries out the contrast test (test result is averaged, similarly hereinafter) of mechanical property, and detailed comparison result is as shown in table 1.
1 3D printing product of table (10% glass) mechanical property compares
From table 1：The sample tensile strength obtained using traditional 3D printing method is low, and uses obtained by the present invention
Sample tensile strength, 12% or so improved than traditional 3D printing method, than using double-screw extruding pelletizing sample
It is high by 21% or so；The sample bending modulus obtained using traditional 3D printing method is low, and uses the obtained sample of the present invention
Bending modulus, it is higher by 14% than traditional 3D printing method, it is higher by 25% than using the sample of double-screw extruding pelletizing.
In addition, due to the effect of twisting, using the transverse and longitudinal shrinkage ratio static state 3D printing of the obtained sample of the present invention
Sample is balanced, provides new resolving ideas for the warpage issues of continuous fiber product, has broad application prospects.
Embodiment 2
Using the device of Fig. 1~Fig. 4.
Device structure parameter：
The aperture for going out wire hole 104 is 2mm；D：H=6：1；H：H1=1:1.2；
D is the internal diameter of shell 101, and H is the height of column, and H1 is the height of centrum；
The depth of groove 202 is 5mm, and groove 202 is the horn mouth slot of centripetal diminution；A diameter of 1mm of spinning nozzle 206；
201 internal diameter 10mm of main body；
The quantity of vertical clapboard 102 is 6 pieces, and the quantity of groove 202 is 6；
Technological parameter：
200 ± 20 DEG C of melt chamber temperature, 180 ± 20 DEG C of size
Raw material：(weight)
It is the ethylene-octene copolymer 8150 of Tao Shi that PP, which uses the PPBX3500 of South Korea SK, toughener, and size is
The PP maleic anhydride grafts of Bondyram, continuous fiber are glass fibre, using the continuous fiber T838 in Mount Taishan, antioxidant
For phosphorous acid three (2,4- di-tert-butyl-phenyls) ester of BASF AG；Coloring agent is Clariant titanium dioxide；
Application process：
(1) by polymer, the mixture of filler, toughener, tackifier, other auxiliary agents and coloring agent melt, by double
Screw extruder squeezes out and is sent into polymer melt chamber 106, residence time 100s
(2) infiltration chamber agent 103 is sent into size melting extrusion；
(3) continuous fiber is sent into size chamber from the fiber entry 107 on size chamber top respectively, and from lower part
Go out after wire hole 104 is pierced by, meanwhile, starting the power plant 3, fiber is twisted in printing 2 horizontal direction of wire feeding head rotation,
Polymer melt in polymer melt chamber 106 has wrapped up the fiber after twisting, the fiber from the lower end of printing wire feeding head 2
Outlet 108 is pierced by, and obtains the 3D printing composite wire 7 of continuous lod, and layer upon layer formation continuous lod is compound
Material product base type；Wherein：The residence time of continuous fiber is 1s, and the rotary speed of printing 2 horizontal direction of wire feeding head is
10r/min；
To test its mechanical property, several test samples are had printed；(i.e. by gained sample and traditional static FDM methods
Method of the same race printing, but torque jet does not rotate), the obtained long glass fiber reinforced MODIFIED PP of conventional twin screw extruding pelletization method
Sample carries out the contrast test (test result is averaged, similarly hereinafter) of mechanical property, and detailed comparison result is as shown in table 2.
2 3D printing product of table (10% glass) mechanical property compares
From table 1：Sample tensile strength, bending modulus and the impact obtained using 3D printing method of the present invention is strong
Degree, under conditions of 10% glass, all than traditional 3D printing method, extruding pelletization method higher, comprehensive performance is more preferable.
In addition, due to the effect of twisting, using the transverse and longitudinal shrinkage ratio static state 3D printing of the obtained sample of the present invention
Sample is more balanced.Compared with case 1, in the system of 10% glass fiber content, as twisting degree improves, transverse and longitudinal shrinking percentage
Difference is reduced, it was demonstrated that product warpage degree can be improved by changing twisting degree, be the warpage of continuous fiber product
Problem provides new resolving ideas, has broad application prospects.
It should be understood that for those of ordinary skills, can be improved or be become according to the above description
It changes, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (11)
1. twisting continuous fiber fusion sediment 3D printing wire feeder, which is characterized in that be equipped with main feed mouth (107) including top
Charging basket (1) and printing wire feeding head (2), the printing wire feeding head (2) is arranged in the bottom of the charging basket, and is filled with power
(3) are set to be connected；
The printing wire feeding head (2) includes：Bowl-shape wire feeding head main body (201) is arranged in wire feeding head main body (201) inner wall
Groove (202) and setting are at the passive rotation component (203) of wire feeding head main body (201) outer wall, the end of the wire feeding head main body
Portion is equipped with spinning nozzle (204).
2. twisting continuous fiber fusion sediment 3D printing wire feeder according to claim 1, which is characterized in that described
The top of charging basket is column (1055), and lower part is hollow centrum (105).
3. twisting continuous fiber fusion sediment 3D printing wire feeder according to claim 2, which is characterized in that described
Printing wire feeding head is arranged by rotating member (205) at the spinning nozzle (206) of described centrum (105) end.
4. twisting continuous fiber fusion sediment 3D printing wire feeder according to claim 3, which is characterized in that described
Charging basket includes shell (101) and vertical clapboard (102), and the vertical clapboard (102) is vertically set in the charging basket (1), and two
Side and bottom edge are connected with the inner wall of the charging basket, are size chamber (103), vertical clapboard between vertical clapboard and the inner wall of charging basket
(102) it is polymer melt chamber (106) between, the bottom edge of vertical clapboard is equipped with out wire hole (104), the top of size chamber (103)
Equipped with size entrance (109).
5. twisting continuous fiber fusion sediment 3D printing wire feeder according to claim 4, which is characterized in that described
The aperture for going out wire hole 104 is 1-2mm；
D：H=4~6：1；H：H1=1:1.1~1.2；
D is the internal diameter of shell 101, and H is the height of column, and H1 is the height of centrum.
6. twisting continuous fiber fusion sediment 3D printing wire feeder according to claim 1, which is characterized in that described
Passive rotation component (203) is connected with power plant 3, and the upper end of the power plant is sleeved on outside the centrum, and two
Containment member is equipped between person.
7. twisting continuous fiber fusion sediment 3D printing wire feeder according to claim 1~6 any one of them, feature exists
In the depth of the groove (202) is 3-5mm；The groove 202 is the horn mouth slot of centripetal diminution；Spinning nozzle 206
A diameter of 1-3mm；201 internal diameter 5-10mm of main body.
8. twisting continuous fiber fusion sediment 3D printing wire feeder according to claim 7, which is characterized in that described
The quantity of vertical clapboard 102 is 2~10 pieces, and the quantity of the groove 202 is 2~10, and the quantity and groove of vertical clapboard 102
202 quantity is identical.
9. twisting continuous fiber fusion sediment 3D printing wire feeder using claim 1~8 any one of them, prepare layer by layer
Accumulate the method for the base type of the 3D products of the continuous fiber reinforced composite materials formed, which is characterized in that include the following steps：
(1) polymer, the mixture of coloring agent and other auxiliary agent melts are squeezed by extrusion device, such as double screw extruder
Go out, polymer melt chamber is sent by main feed entrance；
(2) infiltration chamber agent is sent into size melting extrusion；
(3) continuous fiber is sent into size chamber from the fiber entry on size chamber top respectively, and is worn from the wire hole that goes out of lower part
Go out, meanwhile, start the power plant, printing wire feeding head horizontal direction rotation twists fiber, in polymer melt chamber 6
Polymer melt wrapped up the fiber after twisting, be pierced by, obtain continuous fine from the fiber outlet of lower end of printing wire feeding head
The 3D printing composite wire of enhancing is tieed up, and layer upon layer forms continuous fiber reinforced composite materials product base type.
10. according to the method described in claim 9, it is characterized in that, in step (1), the residence time of the mixture is
30-100s；
In step (3), the residence time of the continuous fiber is 0.6-1s；
In step (4), the rotary speed of printing 2 horizontal direction of wire feeding head is 5-10r/min.
11. method according to claim 9 or 10, which is characterized in that the weight percent dosage of each component is：
The sum of percentage of each component is 100%；
One or more compositions of the polymer in PLA, PCL, PHA, PBS, PA, ABS, PC, PS, POM, PVC, PP
" alloy "；
The continuous fiber is glass fibre, ceramic fibre, metallic fiber, Kafra fiber, aramid fiber, nylon fiber, gathers
One in ether fiber, polyester fiber, carbon fiber, graphite fibre, graphene fiber, carbon nano-tube fibre, acetate fiber, bave
Kind is a variety of, or according to actual needs, and using continuous fiber made of other materials, the filament diameter of the fiber is 10-
20 μm, fibre bundle is generally 1200-2400tex, or is fabricated to the wire rod of other diameters as needed；
Size used is PP maleic anhydride grafts；
Toughener used is ethylene-octene copolymer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113561483A (en) * | 2020-04-27 | 2021-10-29 | 中国科学院福建物质结构研究所 | Twisted two-component material part and preparation method thereof based on 3D printing |
| CN115891149A (en) * | 2022-11-03 | 2023-04-04 | 青岛理工大学 | Multi-continuous-fiber-twisting reinforced composite material 3D printer and printing method thereof |
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