CN107379539A - A kind of continuous fiber prepreg 3D printing shower nozzle and its 3D printer, Method of printing - Google Patents
A kind of continuous fiber prepreg 3D printing shower nozzle and its 3D printer, Method of printing Download PDFInfo
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- CN107379539A CN107379539A CN201710693358.0A CN201710693358A CN107379539A CN 107379539 A CN107379539 A CN 107379539A CN 201710693358 A CN201710693358 A CN 201710693358A CN 107379539 A CN107379539 A CN 107379539A
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- printing
- continuous fiber
- fiber prepreg
- feeding device
- shower nozzle
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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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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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
- B33Y10/00—Processes of additive manufacturing
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a kind of continuous fiber prepreg 3D printing shower nozzle and its 3D printer, Method of printing, the 3D printing shower nozzle includes rotating mechanism, hold-down support, heat abstractor, heater, guide channel and pinch roller, heat abstractor screw thread is in the lower end of hold-down support, heater is connected to the lower end of heat abstractor, guide channel sequentially passes through hold-down support, heat abstractor and heater, for supplying prepreg downwards, pinch roller is arranged on the lower end of heater, and the both sides of guide channel are distributed in, for being compacted the continuous fiber prepreg of molten state；Hold-down support is provided with feeding device, shearing mechanism and cuts feeding device again, and feeding device is used to provide the power supplied downwards again for feeding device and cutting, and shearing mechanism is used to cut prepreg on demand.The present invention realizes continuous fiber prepreg 3D printing, and improves the bulk strength and interlaminar shear strength of nonmetallic 3D printing, reduces the technical difficulty of continuous fiber prepreg structural member shaping.
Description
Technical field
The invention belongs to continuous fiber prepreg 3D printing technique field, more particularly to plants continuous fiber prepreg 3D printing
Shower nozzle and its 3D printer, Method of printing.
Background technology
3D printing technique in process have increase material, reduce waste of raw materials and it is cost-effective the advantages of.3D
Printing technique combines the different subjects such as material, computer, control, is a kind of based on mathematical model file, successively bonds
Different materials carry out the technology of constructed object.Being divided by material, 3D printing technique can be divided into metal 3D printing and nonmetallic 3D printing,
Nonmetallic materials are mainly some thermoplastic resin materials.Due to the relation of raw material, the part strength of nonmetallic 3D printing is not
It is high, it is impossible to one of directly use, the reason for this is also no technical grade 3D printing non-metallic products.
Thermoplastic resin-based continuous fiber composite material has heat resistance height, toughness compared to traditional thermosets
Good, bending takes that high, Interlaminar shear strengths are good, water absorption rate is low, repeatable the advantages that utilizing by force, therefore, Aeronautics and Astronautics, automobile,
It is used widely in the fields such as military affairs, medical treatment.Thermoplastic resin-based continuous fiber composite material is generally first processed into continuous fiber
Prepreg, then placement head is driven to be molded on mould by multi-degree-of-freemechanical mechanical arm, still, this method cost is high, technology is wanted
Ask high.
There are many scientific research personnel to do many effort to improve the intensity of nonmetallic 3D printing both at home and abroad, pass through mostly
Fused glass pellet 3D printing shower nozzle is improved, continuous fiber and thermoplasticity consumptive material are presoaked and then printed at printing head
Shaping, but this method is because thermoplastic resin heating-up temperature can not be too high, thus, cause Resin Flow bad, Er Qieyou
In the preimpregnation time is short, pressure is small etc. reason so that the preimpregnation degree of continuous fiber is not high, and the part strength of printing shaping does not obtain
Essential raising, the waste of continuous fiber is caused, greatly limit its application and development in 3D printing field.
The content of the invention
In order to solve, nonmetallic 3D printing part strength mentioned above is low and existing continuous lod is nonmetallic
3D printing part strength improves unconspicuous shortcoming, and the invention provides a kind of continuous fiber prepreg 3D printing shower nozzle and its 3D
Printing and, Method of printing, thermoplastic resin base continuous fibers prepreg carrys out machine-shaping by the present invention by the method for 3D printing
Composite material parts, the process technology difficulty of traditional continuous fiber prepreg is reduced, substantially increases nonmetallic 3D printing
Intensity.
Technical scheme is as follows：
A kind of continuous fiber prepreg 3D printing shower nozzle, including hold-down support, heat abstractor, heater, continuous fiber
Prepreg guide channel and some pinch rollers, described heat abstractor is threadedly connected to the lower end of described hold-down support, described to add
Thermal is threadedly connected to the lower end of described heat abstractor, and described guide channel sequentially passes through described hold-down support, institute
The heat abstractor and described heater stated, for supplying continuous fiber prepreg downwards, the pinch roller is arranged on described
The lower end of heater, and it is distributed in the both sides of described guide channel；
Described hold-down support is provided with feeding device, shearing mechanism and cuts feeding device again, described shearing mechanism
It is arranged on described feeding device and cuts between feeding device again；
Wherein, feeding device includes driving gear and pulley, and described driving tooth again for described feeding device and cutting
Wheel and pulley are arranged between described guide channel, there is provided the power of transmission continuous fiber prepreg downwards；Described cutting
Mechanism includes back-moving spring, resets briquetting, cuts the gentle cylinder of blade, the described hold-down support in described guide channel side
On be fixedly connected with described back-moving spring, the other end of described back-moving spring is fixed on described reset briquetting, described
The opposite side of guide channel be provided with described cutting blade, described blade of cutting provides shear strength by described cylinder.
Preferably, it is provided with the described hold-down support positioned at described guide channel both sides and is used to set described confession
Expect device or the described groove for cutting again feeding device.
Preferably, the driving gear described in two is arranged on the groove of described guide channel the same side, and by setting
The timing belt synchronous drive in described hold-down support is put, described pulley is arranged on the groove of described guide channel opposite side
On.
Preferably, described hold-down support is provided with space (the i.e. back-moving spring institute for being used for compressing described reset briquetting
The space at place), described space extends and across described guide channel to opposite side institute from the side wall of described hold-down support
In the side wall for the hold-down support stated.
Preferably, described back-moving spring is set in the side wall in described space；In another side wall in described space
The gap passed through provided with described cutting blade.
Preferably, described heater includes heating mantle, heat transfer compo pipe, and described heat transfer compo pipe is positioned at described
The inner side of heating mantle, the inner side of described heat transfer compo pipe are provided with teflon pipe, are rubbed for reducing.
Preferably, described pinch roller sets the lower end of described heater by leading to mandrel.
Preferably, in addition to rotating mechanism, described steering mechanism are used for the printing path for adjusting 3D printing shower nozzle.This hair
It is bright to also disclose a kind of 3D printer, including above-mentioned 3D printing shower nozzle is installed.
The invention also discloses a kind of Method of printing using above-mentioned 3D printing shower nozzle, comprise the following steps：
(1) the 3D printing shower nozzle described in claim 1~8 is arranged on 3D printer, continuous fiber prepreg passes through
Described guide channel, about 2~8mm is stretched out at described pinch roller, is then described heater, described feeding device
Feeding device provides control power supply again with described cutting；
(2) in the case where described feeding device and the described synchronization for cutting again feeding device supply, through described cutting
Mechanism, now, described shearing mechanism do not receive control signal, are failure to actuate；Described heat abstractor is then passed through, keeps solid
State；Into described heating system, under heating, thermoplastic resin in continuous fiber prepreg is heated melting of being changed into binding
Melt state, by the effect of described pinch roller by the path compacting on demand of the continuous fiber prepreg of molten state in printing bottom plate or
On lower floor's continuous fiber prepreg；
(3) when continuous fiber prepreg printing path direction changes, printing head is in described rotating mechanism
Rotated under effect so that the rotation direction of described pinch roller is parallel with printing path all the time；
(4) when continuous fiber prepreg needs to cut, act described cylinder in the presence of control signal, then
It is delivered on described cutting blade, described cuts cooperation incision disconnection of the blade in described back-moving spring and reset briquetting
Continuous fiber prepreg material, then the retraction of described cutting blade, in the presence of described cutting again feeding device, is continued on；
During printing, repeated rotation step (3) and cutting action (4), that is, complete the printing of high strength composite part on demand.
Compared with prior art, beneficial effects of the present invention are as follows：
First, a kind of continuous fiber prepreg 3D printing shower nozzle of the invention, it is fed again by setting feeding device and cutting short
Device, realize and continuous fiber prepreg is supplied into downwards printing；And in feeding device and cut short to set between feeding device again and cut
Short mechanism, cuts short on demand at any time, and more preferably to print complex-shaped part, and printing head sets and provides steering mechanism, realizes
Accurate control continuous fiber Print direction and printing precision, in addition, setting pinch roller in the exit of heater, there is provided 3D is beaten
The interlaminar shear strength of print；
2nd, continuous fiber prepreg 3D printing method of the invention, the 3D printing of continuous fiber prepreg can be achieved, significantly
Improve existing nonmetallic 3D printing part strength, solve existing continuous fiber 3D printing degree of impregnation it is inadequate caused by intensity carry
The problems such as high less, continuous fiber wastes.
Certainly, any product for implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
Fig. 1 is a kind of schematic cross-section of continuous fiber prepreg of the present invention；
Fig. 2 is a kind of structural representation of continuous fiber prepreg 3D printing shower nozzle of the present invention；
Fig. 3 is a kind of profile of continuous fiber prepreg 3D printing shower nozzle of the present invention；
Fig. 4 is a kind of profile of continuous fiber prepreg 3D printing shower nozzle of the present invention.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this hair
It is bright, rather than limit protection scope of the present invention.Those skilled in the art change according to what the present invention made in actual applications
Enter and adjust, still fall within protection scope of the present invention.
In order to better illustrate the present invention, the present invention is described in detail below with accompanying drawing.
As described in Figure 1, continuous fiber prepreg 11 of the present invention is the thermoplastic resin-based of continuous lod
Composite, its cross sectional shape are circle, including continuous fiber 111 and thermoplastic resin 112, wherein, continuous fiber 111 is carbon
One kind in the fibers such as fiber, glass fibre or Kafra fiber, or the fibre bundle by several fiber composites therein together；
Thermoplastic resin 112 is one kind in the thermoplastic resins such as PLA, ABS, nylon or PEEK.
As shown in figs. 2 to 4, a kind of continuous fiber prepreg 3D printing shower nozzle of the invention, can be attached it to common
On FDM type 3D printers, make continuous fiber prepreg 3D printing shower nozzle code-on-demand migration in print procedure, the 3D printing shower nozzle
It is described including hold-down support 1, heat abstractor 7, heater 8, continuous fiber prepreg guide channel 2 and two pinch rollers 10
Heat abstractor 7 is threadedly connected to the lower end of described hold-down support 1, and the heater 8 is threadedly connected to described radiating dress
7 lower end is put, described guide channel 2 sequentially passes through described hold-down support 1, described heat abstractor 7 and described heating
Device 8, for supplying continuous fiber prepreg 11 downwards, the pinch roller 10 is arranged on the lower end of described heater 8, and divides
Cloth is in the both sides of described guide channel 2, and for being compacted the continuous fiber prepreg 11 of molten state, the present invention preferably will be described
Pinch roller 10 sets the lower end of described heater 8 by leading to mandrel；
Described hold-down support 1 is provided with feeding device 3, shearing mechanism 4 and cuts feeding device 5 again, described cutting
Mechanism 4 is arranged on described feeding device 3 and cut between feeding device 5 again；
Wherein, feeding device 5 includes providing the driving gear 31 (51) of power and carried again for described feeding device 3 and cutting
For guide effect by movable pulley 32 (52), and described driving gear 31 (51) and pulley 32 (52) are arranged on described guiding
Between passage 2, for providing the power of transmission continuous fiber prepreg 11 downwards, described driving gear 31 (51) passes through stepping
Motor obtain continuous driving force, and and by movable pulley 32 (52) coordinate by continuous fiber prepreg 11 on demand downwards supply, therefore, cut
Disconnected feeding device again is synchronized with the movement with feeding device 3 by timing belt 6, continuous fiber prepreg 11 is obtained downward power.
Described shearing mechanism 4 includes back-moving spring 42, resets briquetting 45, cuts blade 43 and cylinder 44, described
Be fixedly connected with described back-moving spring 42 on the described hold-down support 1 of the side of guide channel 2, described back-moving spring 42 it is another
One end is fixed on described reset briquetting 45, and described cutting blade 43, institute are provided with the opposite side of described guide channel 2
The cutting blade 43 stated provides enough shear strengths by described cylinder 44, for cutting continuous fiber prepreg 11.
The present invention, can in order to which by feeding device 3, shearing mechanism 4 and cutting, feeding device 5 is arranged on hold-down support 1 again
A kind of preferably set-up mode of the present embodiment, but not limited to this, the present embodiment is positioned at the described both sides of guide channel 2
Described hold-down support 1, which is provided with, to be used to set described feeding device 3 or the described groove 12 for cutting again feeding device 5,
Driving gear 31 (51) described in two is arranged on the groove 12 of described the same side of guide channel 2, and by being arranged on
The synchronous drive of timing belt 6 for the hold-down support 1 stated, described pulley 32 (52) are arranged on the described opposite side of guide channel 2
On groove 12.
The present embodiment is provided with the described hold-down support 1 between feeding device 5 again in described feeding device 3 and cutting
For compressing the space (i.e. the location of back-moving spring 42) of described reset briquetting 45, described space is from described fixation
The side wall of bearing 1 extends and in the side wall of described guide channel 2 to the hold-down support 1 described in opposite side, ensures to cut
During back-moving spring 42 have enough compression strokes, it is described at this to ensure thoroughly to cut continuous carbon fibre prepreg 11
The upper end of hold-down support 1 is cutting entrance 41 and lower end is to cut outlet 46, and the side wall for cutting entrance 41 is provided with boss, boss
Height should be close proximity to feeding device 3, but do not influence driving gear 31 and the rotation by movable pulley 32.
Described back-moving spring 42 is set in the side wall in described space；Institute is provided with another side wall in described space
The gap that the cutting blade 43 stated passes through.Cut blade 43 and use hard alloy steel blade, cylinder 44 uses minitype cylinder, and carries
For enough shear strengths, to cut continuous fiber prepreg 11.
Described heat abstractor 7 is using the radiating of fin fin, in the fin fin in the side wall of guide channel 2
Boss is set, and the boss face cuts feeding device 5 again, and the height of boss should not influence driving gear 51 and pulley 52 is transported
, should be as close to feeding device 5 again on the premise of dynamic.
Described heater 8 includes heating mantle 81, heat transfer compo pipe 83, and described heat transfer compo pipe 83 is positioned at described
The inner side of heating mantle 81, is coated by it, wherein, temperature sensor 82 is set between heating mantle 81 and heat transfer compo pipe 83, this
Outside, in order to reduce friction, teflon pipe 9 is provided with the inner side of described heat transfer compo pipe 83.
Described heating mantle 81 can be one kind in heating tube, ceramic heat or Electromagnetic Heating etc., described TEMP
Device 82 can be thermistor or thermocouple equitemperature induction mode, and whole heating process is closed-loop control.
A kind of Method of printing using above-mentioned 3D printing shower nozzle of the present invention, comprises the following steps：
(1) above-mentioned 3D printing shower nozzle is arranged on FDM type 3D printers, continuous fiber prepreg 11 is led from described
Passed through to passage 2, about 2~8mm is stretched out at described pinch roller 10, be again then described heater 8, described feed dress
Put 3 and described cutting again feeding device 5 provide control power supply；
(2) in the case where described feeding device 3 and the described synchronization for cutting again feeding device 5 supply, cut through described
Breaking mechanism 4, now, described shearing mechanism 4 do not receive control signal, are failure to actuate；Described heat abstractor 7 is then passed through, is protected
Hold solid-state；Into described heating system 8, under heating, the thermoplastic resin in continuous fiber prepreg, which is heated, to be changed into sticking
The molten state of conjunction, by the effect of described pinch roller 10, the path of the continuous fiber prepreg 10 of molten state on demand is compacted
On printing bottom plate or lower floor's continuous fiber prepreg；
(3) when continuous fiber prepreg printing path direction changes, printing head is in described rotating mechanism
Rotated under effect so that the rotation direction of described pinch roller 10 is parallel with printing path all the time；
(4) when continuous fiber prepreg needs to cut, act described cylinder 44 in the presence of control signal, so
It is delivered to afterwards on described cutting blade 43, described cutting blade 43 is in described back-moving spring 42 and resets matching somebody with somebody for briquetting 45
Under conjunction, the continuous fiber prepreg 11 that solid-state is kept at shearing mechanism 4 is breaking at；Then cut blade 43 to retract, continuous fiber
Prepreg 11 recovers original direct of travel in the presence of back-moving spring 42, and through outlet 46 is cut, dress is fed again cutting
In the presence of putting 5, continue on；
(5) during 3D printing, continuous fiber prepreg 11 is under the movement of printer, according to path and repeat step
(2) activity in printing head, constantly prints composite material parts layer by layer；When running into the position for needing to turn to, repeat
Step (3), is rotated using external rotating mechanism, drives whole printing head to turn an angle；Running into continuous fibre
When dimension needs the position cut, the action described in repeat step (4), continuous fiber is cut.
The continuous fiber prepreg 3D printing method of the present invention, can greatly improve the strong of existing nonmetallic 3D printing
Degree, using the thermoplastic resin based composite material part of 3D printing method construct continuous lod, it can reduce using machinery
Arm processes the cost of continuous fiber prepreg, reduces the technical difficulty of processing continuous fiber composite material part；Meanwhile this hair
Bright continuous fiber prepreg 3D printing shower nozzle, due to being provided with shearing mechanism, steering mechanism and pinch roller, can more accurately be controlled
The Print direction of continuous fiber processed, complex-shaped part is preferably printed, increase the interlaminar shear strength of 3D printing.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (10)
- A kind of 1. continuous fiber prepreg 3D printing shower nozzle, it is characterised in that including hold-down support, heat abstractor, heater, Continuous fiber prepreg guide channel and some pinch rollers, described heat abstractor are threadedly connected under described hold-down support End, the heater are threadedly connected to the lower end of described heat abstractor, and described guide channel sequentially passes through described consolidate Determine bearing, described heat abstractor and described heater, for supplying continuous fiber prepreg downwards, the pinch roller is set In the lower end of described heater, and it is distributed in the both sides of described guide channel；Described hold-down support is provided with feeding device, shearing mechanism and cuts feeding device again, and described shearing mechanism is set Between described feeding device and cutting again feeding device；Wherein, described feeding device and cut again feeding device and include driving gear and pulley, and described driving gear with Pulley is arranged between described guide channel, there is provided the power of transmission continuous fiber prepreg downwards；Described shearing mechanism Including back-moving spring, briquetting, the cutting gentle cylinder of blade are resetted, it is solid on the described hold-down support of described guide channel side The described back-moving spring of fixed connection, the other end of described back-moving spring are fixed on described reset briquetting, led in described Described cutting blade is provided with to the opposite side of passage, described blade of cutting provides shear strength by described cylinder.
- 2. continuous fiber prepreg 3D printing shower nozzle according to claim 1, it is characterised in that positioned at described guiding The described hold-down support of passage both sides, which is provided with, is used to setting described feeding device or described feeding device of cutting again Groove.
- 3. continuous fiber prepreg 3D printing shower nozzle according to claim 2, it is characterised in that the driving tooth described in two Wheel is arranged on the groove of described guide channel the same side, and by being arranged on the timing belt timing belt of described hold-down support Dynamic, described pulley is arranged on the groove of described guide channel opposite side.
- 4. continuous fiber prepreg 3D printing shower nozzle according to claim 1, it is characterised in that on described hold-down support Provided with the space for compressing described reset briquetting, described space extends and across institute from the side wall of described hold-down support In the side wall for the hold-down support described in guide channel to opposite side stated.
- 5. continuous fiber prepreg 3D printing shower nozzle according to claim 4, it is characterised in that described back-moving spring is set In the side wall for putting described space；The gap that described cutting blade passes through is provided with another side wall in described space.
- 6. continuous fiber prepreg 3D printing shower nozzle according to claim 1, it is characterised in that described heater bag Heating mantle, heat transfer compo pipe are included, described heat transfer compo pipe is located at the inner side of described heating mantle, described heat transfer compo pipe Inner side is provided with teflon pipe, is rubbed for reducing.
- 7. continuous fiber prepreg 3D printing shower nozzle according to claim 1, it is characterised in that described pinch roller passes through logical Mandrel sets the lower end of described heater.
- 8. continuous fiber prepreg 3D printing shower nozzle according to claim 1, it is characterised in that also including rotating mechanism, Described steering mechanism is used for the printing path for adjusting 3D printing shower nozzle.
- 9. a kind of 3D printer, it is characterised in that including the 3D printing shower nozzle being provided with described in claim 1~8.
- 10. the Method of printing of a kind of 3D printing shower nozzle using described in claim 1~8, it is characterised in that including following step Suddenly：(1) the 3D printing shower nozzle described in claim 1~8 is arranged on 3D printer, continuous fiber prepreg is described in Guide channel, about 2~8mm is stretched out at described pinch roller, is then described heater, described feeding device and institute Feeding device provides power supply again for the cutting stated；(2) described feeding device and it is described cut again the synchronous supply of feeding device under, through described shearing mechanism, Now, described shearing mechanism does not receive control signal, is failure to actuate；Described heat abstractor is then passed through, keeps solid-state；Into Described heating system, under heating, the heated molten state for being changed into binding of thermoplastic resin in continuous fiber prepreg, lead to The effect for crossing described pinch roller connects the path compacting of the continuous fiber prepreg of molten state on demand in printing bottom plate or lower floor On continuous fiber prepreg material；(3) when continuous fiber prepreg printing path direction changes, effect of the printing head in described rotating mechanism Under rotate so that the rotation direction of described pinch roller is parallel with printing path all the time；(4) when continuous fiber prepreg needs to cut, act described cylinder in the presence of control signal, then transmit Onto described cutting blade, described cuts cooperation incision disconnection continuous fibre of the blade in described back-moving spring and reset briquetting Prepreg is tieed up, then described cutting blade is retracted, and in the presence of described cutting again feeding device, is continued on；Printing When, repeated rotation step (3) and cutting action (4), that is, complete the printing of high strength composite part on demand.
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| CN201710693358.0A CN107379539B (en) | 2017-08-14 | 2017-08-14 | Continuous fiber prepreg 3D printing nozzle, 3D printer and printing method thereof |
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| CN108943719A (en) * | 2018-08-02 | 2018-12-07 | 李慧 | It is a kind of for printing the 3D printer of carbon fiber |
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| JP2020131699A (en) * | 2019-02-18 | 2020-08-31 | 富士ゼロックス株式会社 | Shaping apparatus |
| CN113119446A (en) * | 2021-05-25 | 2021-07-16 | 四川大学 | Continuous fiber reinforced composite 3D printing head with self-cleaning function |
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| JP2022515715A (en) * | 2018-11-29 | 2022-02-22 | インダストリアル コンストルクティーズ サイモンズ ベーフェーベーアー | Equipment and methods for feeding thermoplastic filaments |
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| CN114986939A (en) * | 2022-06-02 | 2022-09-02 | 南京航空航天大学 | Shearing continuous beating mechanism for additive manufacturing of continuous fiber reinforced composite material |
| CN114986889A (en) * | 2022-05-19 | 2022-09-02 | 深圳云疆智造科技有限公司 | 3D prints integrated shower nozzle and 3D printing apparatus |
| CN115042438A (en) * | 2022-06-17 | 2022-09-13 | 南京航空航天大学 | Printing head structure for continuous fiber prepreg wire |
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