CN104097326B - A kind of fibre reinforced composites multiple degrees of freedom 3D printer and Method of printing thereof - Google Patents

A kind of fibre reinforced composites multiple degrees of freedom 3D printer and Method of printing thereof Download PDF

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Publication number
CN104097326B
CN104097326B CN201410325554.9A CN201410325554A CN104097326B CN 104097326 B CN104097326 B CN 104097326B CN 201410325554 A CN201410325554 A CN 201410325554A CN 104097326 B CN104097326 B CN 104097326B
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China
Prior art keywords
screw rod
printhead
freedom
silk
composite
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CN201410325554.9A
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Chinese (zh)
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CN104097326A (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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Abstract

A kind of fibre reinforced composites multiple degrees of freedom 3D printer and Method of printing thereof, make use of the motility of mechanical hand, such that it is able to carry out 3D printing with arbitrarily angled and arbitrary motion track, the 3D printhead installed on it, the 3D that can either carry out high intensity short fiber reinforced composite prints, the continuous long stapled splicing of resin base and braiding can also be carried out, thus produce continuous fiber reinforced composites structure, the present invention can accurately control reinforcing fiber orientation of fiber in composite material parts in 3D print procedure, can realize that there is specific mechanical, the electrically and thermally quick manufacture with labyrinth composite material parts of performance;Simultaneously, without custom mold in advance and the fiber prepreg tape anticipated during Gai, it be applicable not only to the manufacture of heavy parts, also be adapted for the high-volume manufacture of miniature parts, greatly reduce manufacturing cost and production cycle, promote the extensive application of composite material parts further.

Description

A kind of fibre reinforced composites multiple degrees of freedom 3D printer and Method of printing thereof

Technical field

The present invention relates to fiber reinforcement 3D printing technique field, be specifically related to a kind of fiber reinforcement Composite multiple degrees of freedom 3D printer and Method of printing thereof.

Background technology

Fibre reinforced composites are due to its high specific strength, high ratio modulus, resistance to ablation and anti-erosion In the present age, manufacturing industry gains universal acceptance etc. series of advantages, have become as modern industry, especially It is that the one of space flight and aviation, national defense and military, racing vehicle, robot and medical field is important Structure material, its development is the rapidest.In recent years, various manufacture technology of composite material are met the tendency And give birth to, wherein, fiber placement manufactures at Aeronautics and Astronautics contour performance composite material parts In application obtained the extensive concern of all circles.Technology of fiber placement for composite materials forming technique is 20 Century 70 grows up as to fiber winding and the reform of automated tape-laying technology A kind of full-automatic composites processing technology, is also that development in recent years is the fastest, the highest the answering of efficiency One of condensation material automatic forming manufacturing technology, has that speed of production is very fast, product quality compares The advantages such as stable, reliability is high.

But, although technology of fiber placement for composite materials technology eliminates conventional composite materials manufacturing process In fibrage problem, the lay of complex-curved structure can be realized, but this technique have to Having the mould customized in advance, and the manufacturing cost of large mold is expensive, meanwhile, fiber placement fills Standby extremely complex, it is generally required to expensive electron beam or laser solidify as thermal source, This manufacturing cost resulting in equipment itself is the highest, has been further pulled up fiber placement technique institute The price of composite material parts of preparation, and fiber placement technique is only suitable for regular surfaces composite wood Material structure lay shapes, and is difficulty with the manufacture with 3 D complex structural composite material part, Significantly hinder fibre reinforced composites to be applied in widely field.

Summary of the invention

In order to overcome the shortcoming of above-mentioned existing composite formed technology, it is an object of the invention to A kind of fibre reinforced composites multiple degrees of freedom 3D printer and Method of printing thereof are provided, use 6DOF work platforms realizes the 3D in 3 D auto space and prints, it is possible to achieve material is to appoint Meaning angle and arbitrary motion track carry out deposition and realize 3D printing manufacture, and it can install warp The 3D printhead of particular design, it is possible to carry out the 3D of high intensity short fiber reinforced composite Print, it is also possible to the 3D printing that can carry out the splicing of continuous resin base long fibre and braiding is installed Head, thus produce the composite material structure of continuous lod, meanwhile, use the method 3D can be accurately controlled and print technique, it is achieved fibre reinforced composites part medium-length fibre The controlled manufacture of orientation, it is thus achieved that the composite material parts of specific mechanical property, with traditional handicraft phase Ratio, can be greatly reduced again manufacturing cost and time, improve production efficiency and economy.

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

A kind of fibre reinforced composites multiple degrees of freedom 3D printer, including 3D printhead 7, 3D printhead 7 is connected on six degree of freedom mechanical hand 13, six degree of freedom mechanical hand 13 and meter Calculation machine 14 connects, the outside shear 18 that is provided with of 3D printhead 7, shear 18 and meter Calculation machine 14 connects, and is provided with movable working platform 1, movable working platform below 3D printhead 7 1 is connected by levelling bolt 2 thereon and heating base plate 3, and heating base plate 3 connects above to be had Print platform 4;

Described 3D printhead 7 includes screw rod 9, is provided with hollow duct, screw rod in screw rod 9 9 are externally connected with screw rod shell 8, and screw rod 9, the termination connection of screw rod shell 8 have nozzle 12, The root connection reducer 16 of screw rod 9, decelerator 16 is connected with motor 15, screw rod The root of shell 8 connects a material guide pipe 6, the silk material 5 guiding by silk material guide pipe 6 Being wrapped on screw rod 9, continuous resin base long fibre 10 is after tensioner 11 tensioning, logical Cross the hollow duct of screw rod 9, arrive nozzle 12, screw rod shell 8 and the junction of nozzle 12 It is provided with heater 17.

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

1) get out movable working platform 1, adjust levelling bolt 2 thereon, make levelling bolt Heating base plate 3 and print platform 4 on 2 are in the relevant position below 3D printhead 7, Heating base plate 3 to be energized to proceed by preheating;

2) 3D if carried out short fiber reinforced composite prints, then silk material 5 is in advance The short fiber reinforced composite made, now only need to be by this material by silk material guide pipe The guiding of 6 is supplied in 3D printhead 7, and is wrapped on screw rod 9;

3) 3D if carried out continuous resin base long fiber reinforcement composite prints, then silk Material 5 is plastic wire material, needs also exist for being supplied to this material by the guiding of silk material guide pipe 6 In 3D printhead 7, through screw rod shell 8, and it is wrapped on screw rod 9, also needs meanwhile By continuous resin base long fibre 10 after tensioner 11 tensioning, it is supplied to 3D printhead 7, through the hollow duct of its screw rod 9, arrive nozzle 12;

4) 3D printhead 7 is connected on six degree of freedom mechanical hand 13, six degree of freedom mechanical hand 13 model datas exported according to computer 14, drive 3D printhead 7 according to respective paths Move in three dimensions;

5) simultaneously, the motor 15 on 3D printhead 7 constantly exports rotary motion, warp Crossing decelerator 16 drives screw rod 9 to rotate, by the silk material 5 being wound around on screw rod 9 and company The continuous continuous feeding forward of resin base long fibre 10, melting through heater 17, finally from Being extruded at nozzle 12, cooling is deposited on print platform 4;

6) when six degree of freedom mechanical hand 13 distance to be carried out sky jumps motion or performs to stop appointing During business, computer 14 is signaled to shear 18, and shear 18 will cut off nozzle The material in 12 exits;

7) through above procedure, complete the multivariant 3D of part and print, when work completes Time, part is moved to post-processing station together along with movable working platform 1.

The Method of printing of the present invention has six-freedom degree, make use of the motility of mechanical hand, from And 3D printing can be carried out with arbitrarily angled and arbitrary motion track, the 3D that it can be installed Printhead 7, the 3D that can either carry out high intensity short fiber reinforced composite prints, it is possible to To carry out the continuous long stapled splicing of resin base and braiding, thus produce continuous lod tree Resin-based composite structure.The method carried due to the present invention can carry out multivariant 3D prints, and therefore, it can be precisely controlled 3D and prints fibre reinforced composites part The orientation of middle fiber, can obtain specific mechanical, electrically and thermally performance, gentlier, higher, more hold Long part;Meanwhile, should during without custom mold in advance and the fiber anticipated Prepreg tape, greatly reduces manufacturing cost and the production cycle of composite material parts.

Accompanying drawing explanation

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

Fig. 2 is the structural representation of 3D printhead 7 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 fibre reinforced composites multiple degrees of freedom 3D printer, including 3D Printhead 7,3D printhead 7 is connected on six degree of freedom mechanical hand 13, six degree of freedom machinery Hands 13 and computer 14 connect, and 3D printhead 7 is outside is provided with shear 18, shears dress Put 18 and computer 14 connect, be provided with movable working platform 1 below 3D printhead 7, can Mobile working platform 1 is connected by levelling bolt 2 thereon and heating base plate 3, heats base plate 3 Connect above and have print platform 4;

With reference to Fig. 2, described 3D printhead 7 includes screw rod 9, is provided with hollow in screw rod 9 Duct, screw rod 9 is externally connected with screw rod shell 8, and screw rod 9, the termination of screw rod shell 8 connect There is nozzle 12, the root connection reducer 16 of screw rod 9, decelerator 16 and motor 15 Connecting, the root of screw rod shell 8 connects a material guide pipe 6, and silk material 5 is guided by silk material The guiding of pipe 6 is wrapped on screw rod 9, and continuous resin base long fibre 10 is through tensioner 11 After tensioning, by the hollow duct of screw rod 9, arrive nozzle 12, screw rod shell 8 and nozzle The junction of 12 is provided with heater 17.

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

1) with reference to Fig. 1, get out movable working platform 1, adjust levelling bolt 2 thereon, The heating base plate 3 on levelling bolt 2 and print platform 4 is made to be in below 3D printhead 7 Relevant position, give heating base plate 3 be energized to proceed by preheating;

2) with reference to Fig. 2, the 3D if carried out short fiber reinforced composite prints, then silk material 5 is the short fiber reinforced composite made in advance, now only this material need to be passed through silk The guiding of material guide pipe 6 is supplied in 3D printhead 7, and is wrapped on screw rod 9;

3) beat with reference to Fig. 2, the 3D if carried out continuous resin base long fiber reinforcement composite Print, then silk material 5 is plastic wire material, needs also exist for this material leading by silk material guide pipe 6 To being supplied in 3D printhead 7, through screw rod shell 8, and it is wrapped on screw rod 9, with Time, also need continuous resin base long fibre 10 after tensioner 11 tensioning, be supplied to 3D printhead 7, through the hollow duct of its screw rod 9, arrives nozzle 12;

4) being connected on six degree of freedom mechanical hand 13 with reference to Fig. 1,3D printhead 7, six certainly The model data exported according to computer 14 by degree mechanical hand 13, drives according to respective paths 3D printhead 7 moves in three dimensions;

5) with reference to Fig. 2, meanwhile, the motor 15 on 3D printhead 7 constantly exports rotation Transhipment is dynamic, drives screw rod 9 to rotate through decelerator 16, will be wound around the silk on screw rod 9 Material 5 and the continuous feeding forward of resin base long fibre 10 continuously, melting through heater 17 Melting, be finally extruded at nozzle 12, cooling is deposited on print platform 4;

6) with reference to Fig. 1, when six degree of freedom mechanical hand 13 distance to be carried out sky jumps motion or holds During row stopping task, computer 14 is signaled to shear 18, and shear 18 will Cut off the material in nozzle 12 exit;

7) through above procedure, complete the multivariant 3D of part and print, when work completes Time, part is moved to post-processing station together along with movable working platform 1.

The Method of printing of the present invention has six-freedom degree, make use of the motility of mechanical hand, from And 3D printing can be carried out with arbitrarily angled and arbitrary motion track, the 3D that it can be installed Printhead 7, the 3D that can either carry out high intensity short fiber reinforced composite prints, it is possible to To carry out the continuous long stapled splicing of resin base and braiding, thus produce continuous lod tree Resin-based composite structure.Owing to method proposed by the invention can carry out multivariant 3D prints, and therefore, it can accurately control in 3D print procedure reinforcing fiber at composite wood The orientation of fiber in material part, it is possible to achieve there is having of specific mechanical, electrically and thermally performance multiple The quick manufacture of miscellaneous structural composite material part;Meanwhile, without custom mold in advance during being somebody's turn to do And the fiber prepreg tape anticipated, it is applicable not only to the manufacture of heavy parts, also is adapted for The high-volume manufacture of miniature parts, greatly reduces manufacturing cost and production cycle, further Promote the extensive application of composite material parts.

Claims (2)

1. a fibre reinforced composites multiple degrees of freedom 3D printer, including 3D printhead (7), it is characterised in that: 3D printhead (7) is connected on six degree of freedom mechanical hand (13), Six degree of freedom mechanical hand (13) and computer (14) connect, and 3D printhead (7) is outside to be set Shear (18), shear (18) and computer (14) is had to connect, 3D printhead (7) lower section is provided with movable working platform (1), and movable working platform (1) passes through tune thereon Plain screw (2) and heating base plate (3) connect, and heating base plate (3) connects above printing Platform (4);
Described 3D printhead (7) includes that screw rod (9), screw rod are provided with hollow hole in (9) Road, screw rod (9) is externally connected with screw rod shell (8), screw rod (9), screw rod shell (8) Termination connects nozzle (12), the root connection reducer (16) of screw rod (9), decelerator (16) being connected with motor (15), the root of screw rod shell (8) connects has a material to lead To pipe (6), silk material (5) is wrapped in screw rod (9) by the guiding of silk material guide pipe (6) On, continuous resin base long fibre (10), after tensioner (11) tensioning, passes through screw rod (9) hollow duct, arrives nozzle (12), screw rod shell (8) and nozzle (12) Junction is provided with heater (17).
A kind of fibre reinforced composites multiple degrees of freedom 3D the most according to claim 1 The Method of printing of printer, it is characterised in that comprise the following steps:
1) get out movable working platform (1), adjust levelling bolt thereon (2), make tune Heating base plate (3) and print platform (4) on plain screw (2) are in 3D printhead (7) relevant position of lower section, is energized to proceed by preheating to heating base plate (3);
2) 3D if carried out short fiber reinforced composite prints, then silk material (5) is pre- The short fiber reinforced composite first made, now only need to be guided this material by silk material The guiding of pipe (6) is supplied in 3D printhead (7), and is wrapped on screw rod (9);
3) 3D if carried out continuous resin base long fiber reinforcement composite prints, then silk Material (5) is plastic wire material, needs also exist for passing through this material the guiding of silk material guide pipe (6) It is supplied in 3D printhead (7), through screw rod shell (8), and is wrapped in screw rod (9) On, also need continuous resin base long fibre (10) through tensioner (11) tensioning meanwhile After, it is supplied to 3D printhead (7), through the hollow duct of its screw rod (9), arrives spray Mouth (12);
4) 3D printhead (7) is connected on six degree of freedom mechanical hand (13), six degree of freedom The model data that mechanical hand (13) exports according to computer (14), drives according to respective paths 3D printhead (7) moves in three dimensions;
5) simultaneously, the constantly output of the motor (15) on 3D printhead (7) rotates fortune Dynamic, drive screw rod (9) to rotate through decelerator (16), will be wound around on screw rod (9) Silk material (5) and continuously resin base long fibre (10) constantly feeding forward, through heating Melting of device (17), is finally extruded from nozzle (12), and it is flat that cooling is deposited on printing On platform (4);
6) when six degree of freedom mechanical hand (13) distance to be carried out sky jumps motion or performs stopping During task, computer (14) is signaled to shear (18), shear (18) The material in nozzle (12) exit will be cut off;
7) through above procedure, complete the multivariant 3D of part and print, when work completes Time, part is moved to post-processing station together along with movable working platform (1).
CN201410325554.9A 2014-07-09 2014-07-09 A kind of fibre reinforced composites multiple degrees of freedom 3D printer and Method of printing thereof CN104097326B (en)

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