CN104149339B - A kind of continuous fiber reinforced composite 3D printer and Method of printing thereof - Google Patents

A kind of continuous fiber reinforced composite 3D printer and Method of printing thereof Download PDF

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Publication number
CN104149339B
CN104149339B CN201410325650.3A CN201410325650A CN104149339B CN 104149339 B CN104149339 B CN 104149339B CN 201410325650 A CN201410325650 A CN 201410325650A CN 104149339 B CN104149339 B CN 104149339B
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China
Prior art keywords
printhead
screw rod
nozzle
plastic wire
composite
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CN201410325650.3A
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Chinese (zh)
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CN104149339A (en
Inventor
田小永
杨春成
曹毅
同治强
张莹莹
李涤尘
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西安交通大学
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Publication of CN104149339A publication Critical patent/CN104149339A/en
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Abstract

A kind of continuous fiber reinforced composite 3D printer and Method of printing thereof, utilize 3D printing technique, bonded composite fiber placement, the 3D achieving resin-based continuous fiber reinforced composite prints, without the need to custom mold in advance and the fiber prepreg tape of anticipating in this process, greatly reduce cost; Meanwhile, adopt the method that 3D prints, control the direction of fortifying fibre in manufactured part better, more easily, more easily obtain that there is the composite material parts customizing mechanical property, the quick manufacture of the composite material parts with labyrinth can be realized; Relative to original technology of fiber placement for composite materials technique, range of application of the present invention is wider, production efficiency is higher.

Description

A kind of continuous fiber reinforced composite 3D printer and Method of printing thereof

Technical field

The present invention relates to fibre reinforced composites 3D printing technique field, be specifically related to a kind of continuous fiber reinforced composite 3D printer and Method of printing thereof.

Background technology

Resin base fiber reinforced composite material, comprise continuous fiber and short fiber reinforced composite, it is high that manufactured part has specific strength, specific modulus is large, material property has designability, corrosion resistance and excellent in durability, thermal coefficient of expansion and the concrete advantage such as close, make resin base fiber reinforced composite material can meet modern structure to greatly across, towering, heavy duty, the needs of high-strength light and under severe conditions job development, therefore in Aero-Space, national defense and military, racing vehicle, the fields such as robot and medical treatment obtain applies more and more widely.3D printing technique refers to that printhead under program, carry out material according to the cross section information of current layer and fill manufacture, and then produce required part fast by cumulative layer by layer, print the free degree preferably because it can manufacture any complex parts and have, in industrial production and daily life, more and more there is actual application value.

But, mode many employings technology of fiber placement for composite materials technology that resin-based long fiber reinforcement composite material part comparatively advanced at present manufactures, namely by the determined laying direction of design of part and overlay thickness requirement, adopt multivariant placement head will organize fiber prepreg yarn bundle or arrowband automatic placement at die surface more, which needs the fiber prepreg material of having anticipated and the high mould of cost, is not suitable for the long fiber reinforcement parts batch manufacture with labyrinth.Simultaneously, also rare 3D printer and the correlative study work that can realize the manufacture of fibre reinforced composites part at home and abroad, do not find ripe continuous fiber reinforced composite 3D printer, therefore which greatly limits 3D printing technique manufactures field development at fibre reinforced composites part.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of continuous fiber reinforced composite 3D printer and Method of printing thereof, both the fiber-wall-element model of continuous fiber reinforced composite part can be printed by control 3D, can obtain again specific mechanical, electricity and hot property, gentlier, more by force, more lasting part, and do not need design, mfg. moulding die, thus greatly reduce cost and manufacturing time, promote the extensive use of fibre reinforced composites.

In order to achieve the above object, the present invention adopts following technical scheme:

A kind of continuous fiber reinforced composite 3D printer, comprise 3D printhead 5,3D printhead 5 is arranged on two-dimension moving platform 11, the below of 3D printhead 5 is provided with workbench 12, workbench 12 is connected with lowering or hoisting gear 21, the left and right link enhancement fiber 1 of workbench 12 and the charging tray 2 of plastic wire material 8, fortifying fibre 1 is sent in 3D printhead 5 through tensioning apparatus 3, fiber guiding duct 4, and plastic wire material 8 is also sent in 3D printhead 5 through plastic wire guide pipe 9;

Described 3D printhead 5 comprises printhead screw rod 6, the outside of printhead screw rod 6 connects printhead screw rod shell 10, the root of printhead screw rod 6 is connected with large drive wheel 16, large drive wheel 16 is by driving belt 15, little drive 14 is connected with printhead stepper motor 13, printhead screw rod 6, the termination of printhead screw rod shell 10 is connected with nozzle 7, printhead screw rod 6 is provided with hollow duct, fortifying fibre 1 is through the hollow duct of fiber guiding duct 4 through printhead screw rod 6, arrive nozzle 7, the root of printhead screw rod shell 10 is provided with plastic wire guide pipe 9, plastic wire material 8 is wrapped on printhead screw rod 6 through plastic wire guide pipe 9, enter into nozzle 7 place, printhead screw rod shell 10 is connected with heater 17 and temperature controller 18 near nozzle 7 place, shear 20 is provided with outside nozzle 7.

The Method of printing of described printer, comprises the following steps:

1) fortifying fibre 1 is from its charging tray 2 in, through tensioning apparatus 3,3D printhead 5 is supplied by fiber guiding duct 4, fortifying fibre 1 is through the hollow duct of printhead screw rod 6, arrive nozzle 7, described fortifying fibre 1 is the composite enhancing fiber of glass fibre, carbon fiber or aramid fiber;

2) plastic wire material 8 is from its charging tray 2s, through the guiding of plastic wire guide pipe 9, through printhead screw rod shell 10, is wrapped on printhead screw rod 6, enters into nozzle 7 place;

3) when carrying out part 3D print job, programme-control two-dimension moving platform 11, drives 3D printhead 5 on table 12, moves according to the cross-section data of current layer model;

4) simultaneously, printhead stepper motor 13 drives printhead screw rod 6 to rotate by little drive 14, driving belt 15, large drive wheel 16, constantly extruded to nozzle 7 place by plastic wire material 8, heater 17 and the temperature controller 18 of middle ensure that plastic wire material 8 is in molten condition;

5) fortifying fibre 1 is mixed to form composite wire material 19 mutually at the plastic wire material 8 of nozzle 7 place and melting, and be extruded from nozzle 7 outlet, composite wire material 19 cools deposition on table 12, due to fortifying fibre 1, there is good toughness and be adhered on workbench 12, therefore, it is possible to constantly pullled out from fiber charging tray 2 along with the motion of two-dimension moving platform 11;

6) when behind the cross section completing the current one deck of model, shear 20 cuts off the composite wire material 19 in nozzle 7 exit, and then, lowering or hoisting gear 21 will to decline a lift height together with workbench 12;

7) step 3 is repeated) ~ step 6), until part completes.

Because 3D printing technique is combined with fibre reinforced composites forming technique by the present invention, control forming direction well, the 3D achieving resin-based continuous fiber reinforced composite prints; Further, without the need to the mould customized in advance and the fiber prepreg tape of anticipating in this process, greatly reduce cost, also reduce process complexity; Meanwhile, the method adopting 3D to print, more accurately can control the direction of fortifying fibre in manufactured part, more easily obtains the composite material parts with customization performance, can realize the quick manufacture of the composite material parts with labyrinth; Certainly, relative to original technology of fiber placement for composite materials technique, this method is not only applicable to the manufacture of heavy parts, is also applicable to the manufacture in enormous quantities of miniature parts, and adaptable scope is more extensive, production efficiency is higher.

Accompanying drawing explanation

Fig. 1 is the structural representation of printer of the present invention.

Fig. 2 is the structural representation of 3D printhead of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention is described in further detail.

With reference to Fig. 1, a kind of continuous fiber reinforced composite 3D printer, comprise 3D printhead 5,3D printhead 5 is arranged on two-dimension moving platform 11, the below of 3D printhead 5 is provided with workbench 12, and workbench 12 is connected with lowering or hoisting gear 21, and the charging tray 2 of fortifying fibre 1 and plastic wire material 8 is placed in the left and right of workbench 12, fortifying fibre 1 is sent in 3D printhead 5 through tensioning apparatus 3, fiber guiding duct 4, and plastic wire material 8 is also sent in 3D printhead 5 through plastic wire guide pipe 9;

With reference to Fig. 2, described 3D printhead 5 comprises printhead screw rod 6, the outside of printhead screw rod 6 connects printhead screw rod shell 10, the root of printhead screw rod 6 is connected with large drive wheel 16, large drive wheel 16 is by driving belt 15, little drive 14 is connected with printhead stepper motor 13, printhead screw rod 6, the termination of printhead screw rod shell 10 is connected with nozzle 7, printhead screw rod 6 is provided with hollow duct, fortifying fibre 1 is through the hollow duct of fiber guiding duct 4 through printhead screw rod 6, arrive nozzle 7, the root of printhead screw rod shell 10 is provided with plastic wire guide pipe 9, plastic wire material 8 is wrapped on printhead screw rod 6 through plastic wire guide pipe 9, enter into nozzle 7 place, printhead screw rod shell 10 is connected with heater 17 and temperature controller 18 near nozzle 7 place, shear 20 is provided with outside nozzle 7.

The Method of printing of described printer, comprises the following steps:

1) with reference to Fig. 1, fortifying fibre 1, from its charging tray 2 in, through tensioning apparatus 3, supplies 3D printhead 5 by fiber guiding duct 4; Composition graphs 2, fortifying fibre 1 is through the hollow duct of printhead screw rod 6, and arrive nozzle 7, described fortifying fibre 1 is the composite enhancing fiber of glass fibre, carbon fiber or aramid fiber;

2) with reference to Fig. 1, plastic wire material 8, from its charging tray 2s, leads through plastic wire guide pipe 9; With reference to Fig. 2, plastic wire material 8, after guiding, pass printhead screw rod shell 10, be wrapped on printhead screw rod 6, enter into nozzle 7 place;

3) with reference to Fig. 1, when carrying out part 3D print job, programme-control two-dimension moving platform 11, drives 3D printhead 5 on table 12, moves according to the cross-section data of current layer model;

4) with reference to Fig. 2, simultaneously, printhead stepper motor 13 drives printhead screw rod 6 to rotate by little drive 14, driving belt 15, large drive wheel 16, constantly extruded to nozzle 7 place by plastic wire material 8, heater 17 and the temperature controller 18 of middle ensure that plastic wire material 8 is in molten condition;

5) fortifying fibre 1 can be mixed to form composite wire material 19 with the plastic wire material 8 of melting mutually at nozzle 7 place, and is extruded from nozzle 7 outlet; With reference to Fig. 1, composite wire material 19 cools deposition on table 12, has good toughness and be adhered on workbench 12 due to fortifying fibre 1, therefore, it is possible to constantly pullled out from fiber charging tray 2 along with the motion of two-dimension moving platform 11;

6) with reference to Fig. 1, when behind the cross section completing the current one deck of model, shear 20 will cut off the composite wire material 19 in nozzle 7 exit, and then, lowering or hoisting gear 21 will to decline a lift height together with workbench 12;

7) step 3 is repeated) ~ step 6), until part completes.

Because 3D printing technique is combined with fibre reinforced composites forming technique by the present invention, control forming direction well, the 3D achieving resin-based continuous fiber reinforced composite prints; Further, without the need to the mould customized in advance and the fiber prepreg tape of anticipating in this process, greatly reduce cost, also reduce process complexity; Meanwhile, the method adopting 3D to print, more accurately can control the direction of fortifying fibre in manufactured part, more easily obtains the composite material parts with customization performance, can realize the quick manufacture of the composite material parts with labyrinth; Certainly, relative to original technology of fiber placement for composite materials technique, this method is not only applicable to the manufacture of heavy parts, is also applicable to the manufacture in enormous quantities of miniature parts, and adaptable scope is more extensive, production efficiency is higher.

Claims (2)

1. a continuous fiber reinforced composite 3D printer, comprise 3D printhead (5), 3D printhead (5) is arranged on two-dimension moving platform (11), the below of 3D printhead (5) is provided with workbench (12), workbench (12) is connected with lowering or hoisting gear (21), the left and right of workbench (12) is connected with the charging tray (2) of fortifying fibre (1) and plastic wire material (8), fortifying fibre (1) is through tensioning apparatus (3), fiber guiding duct (4) is sent in 3D printhead (5), plastic wire material (8) is also sent in 3D printhead (5) through plastic wire guide pipe (9),
Described 3D printhead (5) comprises printhead screw rod (6), the outside of printhead screw rod (6) connects printhead screw rod shell (10), the root of printhead screw rod (6) is connected with large drive wheel (16), large drive wheel (16) is by driving belt (15), little drive (14) is connected with printhead stepper motor (13), printhead screw rod (6), the termination of printhead screw rod shell (10) is connected with nozzle (7), printhead screw rod (6) is provided with hollow duct, fortifying fibre (1) is through the hollow duct of fiber guiding duct (4) through printhead screw rod (6), arrive nozzle (7), the root of printhead screw rod shell (10) is provided with plastic wire guide pipe (9), plastic wire material (8) is wrapped on printhead screw rod (6) through plastic wire guide pipe (9), enter into nozzle (7) place, printhead screw rod shell (10) is connected with heater (17) and temperature controller (18) near nozzle (7) place, shear (20) is provided with outside nozzle (7).
2. the Method of printing of printer according to claim 1, is characterized in that, comprises the following steps:
1) fortifying fibre (1) is from its charging tray (2) in, through tensioning apparatus (3), 3D printhead (5) is supplied by fiber guiding duct (4), fortifying fibre (1) is through the hollow duct of printhead screw rod (6), arrive nozzle (7), described fortifying fibre (1) is the composite enhancing fiber of glass fibre, carbon fiber or aramid fiber;
2) plastic wire material (8) is from its charging tray (2)s, through the guiding of plastic wire guide pipe (9), through printhead screw rod shell (10), be wrapped on printhead screw rod (6), enter into nozzle (7) place;
3) when carrying out part 3D print job, programme-control two-dimension moving platform (11), drives 3D printhead (5) on workbench (12), moves according to the cross-section data of current layer model;
4) simultaneously, printhead stepper motor (13) drives printhead screw rod (6) to rotate by little drive (14), driving belt (15), large drive wheel (16), constantly extruded to nozzle (7) place by plastic wire material (8), heater (17) and the temperature controller (18) of middle ensure that plastic wire material (8) is in molten condition;
5) fortifying fibre (1) can be mixed to form composite wire material (19) with the plastic wire material (8) of melting mutually at nozzle (7) place, and be extruded from nozzle (7) outlet, composite wire material (19) cools deposition on workbench (12), due to fortifying fibre (1), there is good toughness and be adhered on workbench (12), therefore, it is possible to constantly pullled out from fiber charging tray (2) along with the motion of two-dimension moving platform (11);
6) when behind the cross section completing the current one deck of model, shear (20) cuts off the composite wire material (19) in nozzle (7) exit, then, lowering or hoisting gear (21) will to decline a lift height together with workbench (12);
7) step 3 is repeated) ~ step 6), until part completes.
CN201410325650.3A 2014-07-09 2014-07-09 A kind of continuous fiber reinforced composite 3D printer and Method of printing thereof CN104149339B (en)

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