CN109532010A - A kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing device and method - Google Patents
A kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing device and method Download PDFInfo
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- CN109532010A CN109532010A CN201910072673.0A CN201910072673A CN109532010A CN 109532010 A CN109532010 A CN 109532010A CN 201910072673 A CN201910072673 A CN 201910072673A CN 109532010 A CN109532010 A CN 109532010A
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- temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/165—Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
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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
-
- 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
Abstract
A kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing device and method, it is characterized in that varied angle swing mechanism lower end connects and carries print head, the interior setting of print head unreels and winding wheel, the multipair self-lubricating contact heating electrode roller of stepped distribution is arranged in the lower end of the unreeling wheel, it is equipped with the principal voltage roller and varied angle secondary voltage roller with plate contact in print head end, it is each to be provided with temperature and tension sensor between electric roller and voltage roller.The present invention realizes the second grade printing shaping of conventional thermosetting multiple material for the first time, and the molding that can answer material component for labyrinth thermosetting property provides technical solution, greatly improves the quality and shaping efficiency of 3D printing same with thermosetting compound material.
Description
Technical field
The present invention relates to a kind of carbon fibers to answer material forming technique, and especially a kind of carbon fiber answers material 3D printing forming technique,
Specifically a kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing device and method.
Background technique
The usage amount of advanced same with thermosetting compound material has become the key index for measuring aircraft advance, but China flies
The multiple material dosage of row device also far lags behind existing external advanced aircraft.Limit the important technical bottleneck of multiple material dosage first is that multiple
Material manufacturing technology, existing multiple material manufacture use " laying-solidification-processing " three step autofrettages.This method manufacturing process is complicated, efficiency
Low, the period is long, and energy consumption is high.
Currently, in view of the above-mentioned problems, existing unit and mechanism propose thermoplastic composite 3D printing device and method,
However current thermoplastic composite is also difficult to reach the interlayer and boundary strength of conventional thermosetting polymer matrix composites.Needle
For thermosetting resin based composites, certain soaking time is needed since resin crosslinks to react, and 3D printing technique
Composite material must be made to realize complete molding within extremely short grade time second, therefore current thermosetting property answers the 3D printing of material also
It is difficult to realize in complete meaning.For example, to disclose a kind of thermosetting property compound for patent of invention CN106739006A, CN107738441A
Material 3D printer and its Method of printing actually disclose a kind of method of automatic fiber placement+oven post-cure, and material is not implemented
Second grade molding；In another example patent of invention CN108381908A discloses a kind of same with thermosetting compound material 3D printing process,
The 3D printing method of actually a kind of photosensitive resin based composites by ultraviolet light irradiation；In another example patent of invention
CN201721206902.6 discloses a kind of thermosetting resin based composites 3D printing device, solid using low energy electron beam irradiation
Change composite material, achieves the molding of quick crosslinking curing, which solves the problems, such as that this has a potential technical advantage, but due to
Equipment investment is expensive, and Radiation Exposure is cumbersome, it is difficult to large-scale promotion；Currently, there are also part reports by utilizing laser, electricity
The methods of beamlet, infrared radiation, heat gun realize the heated at high speed of partial points, but this kind of high energy beam concentrates the heating company of being difficult to realize
The long-time heat preservation of continuous riding material, therefore traditional high-performance thermosetting polymer matrix composites are difficult to realize within grade time second
It is fully cured.So up to now, also fail to any method and can use high-performance thermosetting resin base and answer material realize that 3D is beaten
Print.
Applicant team protects a kind of side for solidifying composite material using carbon fiber itself synthesis electrical loss fever early period
Method (publication number CN201710975475.6), this method is for the solidification after the completion of large-scale composite material laminate laying forming
Process, may be implemented high quality, high efficiency, low energy consumption solidification.If however the above-mentioned method applied to laminate is directly answered
For in same with thermosetting compound material 3D printing forming process, although quick temperature-rise period may be implemented, since resin is anti-
It answers or is crosslinked and need a period of time, therefore can not realize in-situ solidifying within grade time second.Therefore the present invention proposes a kind of carbon fiber
Multiple material varied angle electrical loss self-heating 3D printing devices and methods therefor, to realize the 3D of high-performance thermosetting polymer matrix composites
Printing.
Summary of the invention
Shaping speed is slow when the purpose of the present invention is answering material 3D printing for existing carbon fiber, and it is in situ to cannot achieve second grade
The problem of solidification, invents a kind of carbon fiber and answers material varied angle electrical loss self-heating 3D printing device and method, it utilizes carbon fiber
The conductive characteristic of itself is inputted by the contact electric energy of multilevel voltage roller so that carbon fiber answer material can be completed in print head it is more
The segmentation non-isothermal heating of grade dynamic transmission fiber, finally feeding realizes that thermosetting property carbon fiber answers the 3D printing of material again, is able to achieve
Stablize, reliably by carbon fiber prepreg Multi-stage heating, so that it is being realized second grade solidification after heating electrode, roller, with complete
The 3D printing process of material is answered at carbon fiber.
Technical solution of the present invention first is that:
A kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing device, including print head, it is characterised in that described beats
Print head is mounted on the lower part of varied angle swing mechanism 1, which is connected to the support tip of movement executing mechanism
It and with the vertical line of principal voltage roller 12 and plate contact point is to swing axis；The print head includes that carbon fiber is answered material tow and unreeled
2, winder roller 3, receipts lining paper roller 7, directive wheel 8, multistage self-lubricating conduction roller 9, tension controller 10, fiber cutting apparatus
11, principal voltage roller 12, secondary voltage roller 6 and temperature sensor 5, multistage self-lubricating conduction roller (9), which is arranged, answers material silk in carbon fiber
The lower part of Shu Fangjuan 2, winder roller 3 and receipts lining paper roller 7 are split in 8 two side of directive wheel, and directive wheel 8 answers material silk close to carbon fiber
Shu Fangjuan 2 arranges that the mandrel of self-lubricating conduction roller 9 and principal voltage roller 12 is fixed in printhead body, and principal voltage roller 12
Positioned at printhead body lowest part and be in contact with panel, the exit side that secondary voltage roller 6 is mounted on principal voltage roller 12 is multiple material
Interlayer provides compaction force；Tension controller 10, which is mounted on, is easy to happen the turning point loosened or two supports in material transmit process
In the farther away section of roller spacing, contactless temperature sensor 5 be mounted in printhead body to by conductive roller 9,
The material surface temperature of secondary voltage roller 6 and principal voltage roller 12 carries out real-time monitoring and feeds back to voltage controller, controls each section of electricity
Carbon fiber answers the spontaneous heating temperature of material between roller；Fiber cutting apparatus 11 is mounted between principal voltage roller 12 and secondary voltage roller 6 and uses
Material is answered in the thermosetting property carbon fiber of the printing shaping to second grade in-situ solidifying to cut off.
The varied angle swing mechanism 1 is by the way of electric-machine directly-driven, and the angle of rotation is according to phase in print track
The angle of adjacent both ends interpolation straight line, and continuous and stable rotates when variable angle occurs in interpolation straight line, the principal voltage
Roller and plate contact point are in the central point of varied angle rotation, secondary voltage roller moment in varied angle rotary course always
Be in contact with the composite material section printed and utilize spring 4 provide compaction effort, with carbon fiber answer material do not occur slide rub
It wipes.
The carbon fiber answer material tow unreel 2 mainly in have lining paper and isolation film material prepreg,
Winder roller 3, receipts lining paper roller 7 are arranged at an angle, guarantee that fiber without hindrance can enter with diaphragm and lining paper removing
In the conductive roller 9 of stepped arrangement, winder roller 3 and receipts lining paper roller 7 are connected with motor, and motor drives winder roller 3
With receive lining paper roller 7, and then drive carbon fiber to answer material tow and unreel 2 and persistently rotate and unreel.
The conductive roller 9 is self-lubricating contact heating electricity roller, it using the good conductor copper sleeve of electricity as main body,
It is provided with several uniformly distributed contact holes in the main body, is inlaid with graphite block in hole, the barrel contacts are in metal support mandrel, mandrel
It is fixed in the bearing hole in printhead body, is connected on the outside of metal core axle and pulls out formula transmission cable fastly, cable is metal core axle
Electric current is passed to, forms electric pathway after continuous fiber and barrel contacts, the volume resistance of the segment of fiber on each electric pathway is greater than certainly
Lubricating contact formula heats the summation of the contact resistance of electric roller.
The temperature sensor 5 is non-contact temperature sensor: multiple groups non-contact temperature sensor constitutes temperature prison
Survey feedback device, temperature sensor 5 is arranged in the multistage heating area of formation temperature gradient, temperature sensor 5 with it is band-like
Prepreg is not in contact, and every group of two sensors are respectively placed in prepreg two sides, the two in tow sides thermometric simultaneously, and
Temperature controller is fed back to, for temperature controller by real time temperature compared with target temperature, the adaptive temperature signal of generation is sent to different electricity
Pressure controller, voltage controllers at different levels increase or reduce the input voltage in each pair of electrode, and it is flat that whole device is constantly in dynamic
The state of weighing apparatus.
Carbon fiber prepreg is discharged in a manner of pulling under tension controller effect, and tension controller is located at band-like prepreg
It being easy to happen in the turning point loosened and the two support farther away sections of roller, controller main composition part is tensioning wheel,
Bearing up pulley can be moved forward and backward in one direction.
The fiber cutting apparatus is arranged between principal voltage roller and secondary voltage roller, and ultrasonic knife chip cutting method can be used
Fiber is cut, cutting process does not influence normal print process.
The winder roller 3 and lining paper roller 7 one of all can be installed or be fitted into.
Technical solution of the present invention second is that:
A kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing method, it is characterised in that includes the following steps:
Step 1: laying prepares and preliminary feeding: organic solvent cleaning printing panel surface uniformly coats release agent, guarantees material strip
It insulate between printing panel, material strip end is first fed into 3D printing module；After carbon fiber answers material removal film, sequentially entrance is in
The multipair self-lubricating contact heating electricity roller of ladder-like distribution；
Step 2: tensioning material strip and setting temperature program: according to the mobile tensioning wheel of the elastic situation of band, guaranteeing that material strip is in tensioning
State；According to used material system, temperature control curve between electric rollers at different levels is set, detects the position of feedback device, really
Definitely really acquire material strip temperature of each section；
Step 3: examine each electric pathway on-off signal: the cable that pulls out fastly that every group of electrode is drawn is respectively connected to multi-input direct current electricity
Source, temperature controller at different levels, current controller draw the signal output end that cable is respectively connected to computer, are passed through stimulus, protect
It demonstrate,proves and is normally connected between electric rollers at different levels；
Step 4: setting print track: being sliced the print code for obtaining carbon fibre composite by 3D printing geometrical model, leads to
It crosses postpositive disposal and generates the final print code with varied angle printing and adaptive temperature control, beaten using data transmission media importing
During printing equipment is set, print routine preparation is carried out；
Step 5: applying pressure and start to print: moved using printing equipment Z-direction to apply force of impression, starting printing dress to material strip
It sets, starts successively to print according to the shape being pre-designed；
Step 6: demoulding and finishing: after demoulding, cutting finishing being carried out to it according to the profile of designed component, obtains final carbon fiber
Tie up composite element.
The force of impression of the print head is 0.6Mpa.
The beneficial effects of the present invention are:
The present invention realizes the second grade printing shaping of conventional thermosetting multiple material for the first time, can answer material component for labyrinth thermosetting property
Molding provides technical solution, greatly improves the quality and shaping efficiency of 3D printing same with thermosetting compound material.
Detailed description of the invention
Fig. 1 is that a kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing principle of device schematic diagram.
Fig. 2 is copper-graphite self-lubricating contact heating electrode schematic diagram.
Fig. 3 is a kind of multiple material varied angle electrical loss self-heating 3D printing device shape assumption diagram of specific implementation.
In figure: 1, swing mechanism；2, unwinding device；3, winder roller；4, spring；5, non-contact temperature sensor；6,
Secondary voltage roller；7, lining paper roller is received；8, guide roller；9, multistage self-lubricating conduction roller；10, tension modulator；11 cutting dresses
It sets；12, principal voltage roller；13, graphite self-lubricating roller；14, self-lubricating roller mandrel；15, cable is pulled out fastly.
Specific embodiment
Below in conjunction with drawings and examples, the present invention is described in further detail.Following embodiments are merely to illustrate this
Certain implementation special cases of invention, the protection scope being not intended to restrict the invention.In addition, after the present invention discloses, art technology
Personnel based on the principle that carbon fiber in the present invention answers material varied angle electrical loss self-heating 3D printing device make any modification or
Variation, belongs to the range of protection defined in the claim of this application book.
As shown in Figs. 1-2.
A kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing device, including print head, the print head peace
Mounted in the lower part of varied angle swing mechanism 1, which is connected to the support tip of movement executing mechanism and with master
The vertical line of voltage roller 12 and plate contact point is to swing axis；The print head includes that carbon fiber answers material tow and unreels 2, winder
Roller 3 receives lining paper roller 7, directive wheel 8, multistage self-lubricating conduction roller 9, tension controller 10, fiber cutting apparatus 11, master
Voltage roller 12, secondary voltage roller 6 and temperature sensor 5, the winder roller 3 and lining paper roller 7 can be installed all or install it
One of.Multistage self-lubricating conduction roller 9 is arranged in carbon fiber and answers the lower part that material tow unreels 2, winder roller 3 and receipts lining paper roller
Wheel 7 is split in 8 two side of directive wheel, and directive wheel 8 answers material tow close to carbon fiber and unreels 2 arrangements, self-lubricating conduction roller 9 and main electricity
The mandrel of pressure roller 12 is fixed in printhead body, and principal voltage roller 12 is located at the lowest part of printhead body and connects with panel
Touching, secondary voltage roller 6 are mounted on the exit side of principal voltage roller 12 and provide compaction force for multiple material interlayer；Tension controller 10 is mounted on material
It is easy to happen in material transmit process in the turning point loosened or the two support farther away sections of roller spacing, contactless temperature
Sensor 5 is mounted in printhead body to the material surface temperature by conductive roller 9, secondary voltage roller 6 and principal voltage roller 12
It carries out real-time monitoring and feeds back to voltage controller, carbon fiber answers the spontaneous heating temperature of material between each section of control electric roller；Fiber is cut
Disconnected device 11 is mounted on the thermosetting property carbon between principal voltage roller 12 and secondary voltage roller 6 for the printing shaping to second grade in-situ solidifying
Fiber is answered material and is cut off.As shown in Figure 1, the angle that the varied angle swing mechanism 1 by the way of electric-machine directly-driven, rotates
Angle of the degree according to adjacent both ends interpolation straight line in print track, and continuous and stable when variable angle occurs in interpolation straight line
Rotation, the principal voltage roller and plate contact point are in the central point of varied angle rotation always, and the secondary voltage roller is becoming
The moment is in contact with the composite material section printed and spring 4 is utilized to provide compaction effort in angle rotary course, with carbon fiber
It ties up multiple material and sliding friction does not occur.The carbon fiber answers material tow and unreels 2 mainly in answering with lining paper and isolation film
Condensation material prepreg, winder roller 3 are received lining paper roller 7 and are arranged at an angle, guarantee fiber can it is without hindrance with diaphragm and
Lining paper removing enters in the conductive roller 9 of stepped arrangement, and winder roller 3 and receipts lining paper roller 7 are connected with motor, motor band
Dynamic winder roller 3 and lining paper roller 7 is received, and then drives carbon fiber to answer material tow and unreel 2 and persistently rotate and unreel.The conduction
Roller 9 is self-lubricating contact heating electricity roller, it is provided with several using the good conductor copper sleeve of electricity as main body in the main body
It is evenly distributed with contact hole, is inlaid with graphite block in hole, the barrel contacts are fixed in printhead body in metal support mandrel, mandrel
Bearing hole in, pull out formula transmission cable fastly as shown in Fig. 2, being connected on the outside of metal core axle, cable be metal core axle pass to electric current,
Electric pathway is formed after continuous fiber and barrel contacts, the volume resistance of the segment of fiber on each electric pathway is greater than self-lubricating and contacts
Formula heats the summation of the contact resistance of electric roller.The temperature sensor 5 is non-contact temperature sensor: multiple groups are contactless
Temperature sensor constitutes temperature monitoring feedback device, and temperature sensor 5 is arranged in the multistage heating area of formation temperature gradient
Interior, temperature sensor 5 is not in contact with band-like prepreg, and every group of two sensors are respectively placed in prepreg two sides, and the two exists
Tow sides thermometric simultaneously, and feeds back to temperature controller, temperature controller by real time temperature compared with target temperature, generation it is adaptive
Temperature signal is sent to different voltage controllers, and voltage controllers at different levels increase or reduce the input voltage in each pair of electrode, whole
A device is constantly in the state of dynamic equilibrium.Carbon fiber prepreg is discharged in a manner of pulling under tension controller effect,
Force controller is located at band-like prepreg and is easy to happen in the turning point loosened and the two support farther away sections of roller, controller master
Wanting composition part is tensioning wheel, and tensioning wheel can be moved forward and backward in one direction.The fiber cutting apparatus is arranged in main electricity
Between pressure roller and secondary voltage roller, ultrasonic knife chip cutting method can be used and cut fiber, cutting process does not influence normal print process.
First band should be pulled out from let off roll 2 when use around main piezoelectricity roller 12 and secondary 6 lower part of piezoelectricity roller is pressed in after breast wheel.
Details are as follows:
As shown in Figure 1, the present invention is using print head-plate contact point, varied angle swing mechanism is arranged as axis in axis vertically upward
1, which is connected between movement executing mechanism and electrical loss self-heating 3D printing module, and setting carbon fiber is multiple in the module
Material tow unreels 2, winder roller 3, lining paper roller 7 is received, after carbon fiber answers material removal film, sequentially into stepped distribution
Multipair self-lubricating contact heating electricity roller 9, multipair electricity roller realize that layer-by-layer, stepped heating, each electricity roller mandrel are fixed on institute
The wall surface for stating module is easy to happen the turning point loosened or the two support farther away sections of roller spacing in material transmit process
Tension controller 10 is inside installed, is equipped with the principal voltage roller 12 and varied angle secondary voltage roller 6 with plate contact in print head end,
The pair pressure roller can planar do varied angle up and down in axis, contact with multiple material always, provide compacting for multiple material interlayer
Power, each electricity roller are that the different location carbon fiber being in contact with it answers the multipair controllable voltage of material input, and temperature monitoring feedback device is real
When monitoring prepreg temperature and feed back to voltage controller, control the spontaneous heating temperature that carbon fiber between each section of electric roller answers material, most
It realizes that carbon fiber answers second grade curing molding of material during 3D printing eventually, is equipped with fiber cutting apparatus 11 between the electricity roller,
Cutoff process is done when the printing of big angle commutates with multilayer printing.
Example 1.
A kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing device, as shown in Figure 1, the device includes pendulum
Motivation structure 1, isolation film wrap-up 3, heats electric roller 9, principal voltage roller 12, secondary voltage roller 6 and lining paper receipts at unwinding device 2
Winding apparatus 7, the carbon fiber are answered material prepreg and are crimped on unwinding device 2, are made not beat by the movement of entire printing equipment
Print multiple material persistently to pull out with multiple material has been printed, be printed on the table by predetermined shape, meanwhile, isolation film wrap-up 3 and
Lining paper wrap-up 7 in the same direction answer material segmentation to carbon fiber and add by the asynchronous material of matching collected after multiple material strips, the electric roller 9 of heating
Heat.
As shown in Fig. 2, 13 main body of copper-graphite self-lubricating contact heating electricity roller is the good conductor copper sheathing of electricity
Tin, it is provided with several uniformly distributed contact holes in main body, graphite block is embedded in hole, sleeve is directly contacted with metal support mandrel 14,
The two produces relative sliding, and graphite and copper play electric action, and wherein graphite plays lubricating action again, and the electric current of voltage roller comes
Mandrel on the bearing hole for being fixed on 3D printing module siding is connected on the outside of metal core axle and pulls out formula transmission cable 15 fastly,
It is passed through electric current on cable, forms electric pathway, the volume electricity of the segment of fiber on each electric pathway after continuous fiber and barrel contacts
Resistance, greater than the summation of the contact resistance of self-lubricating contact heating electricity roller, so as to by generated joule energy maximum limit
Degree gathers in each segment of fiber, realizes that " second grade " reaches solidification temperature needed for carbon fiber answers material.
By the way of electric-machine directly-driven, the angle of rotation takes adjacent two in print track the varied angle swing mechanism
The angle of interpolation straight line is held, and continuous and stable rotates when variable angle occurs in interpolation straight line, realizes that tape-shaped carbon fiber is multiple
Material surface does not generate fold, the internal smooth transition for not generating additional stress, during the principal voltage roller and plate contact point be
Heart point, the secondary voltage roller rotate about during varied angle, and the moment is in contact with the composite material section printed and mentions
For compaction effort, material is answered with carbon fiber, sliding friction does not occur.
The carbon fiber answers material tow and unreels winder roller mainly in the composite material for having lining paper and isolation film
Prepreg, lining paper winding roller and film take-up roller arrange at an angle, guarantee fiber can it is without hindrance with diaphragm and
Lining paper removing, continual to enter in ladder-like electric roller, lining paper winding rolling axle is driven by stepper motor, and motor drives lining
Paper winds roller rotation, and the lasting rotation that driving fiber answers material raw material collection roller unreels.
The main body of the self-lubricating contact heating electricity roller is the good conductor copper sleeve of electricity, is provided in main body several equal
Cloth contact hole, graphite block is embedded in hole, and sleeve is contacted with metal support mandrel, and mandrel is fixed on the 3D printing module wall
It is connected on the bearing hole of plate, on the outside of metal core axle and pulls out formula transmission cable fastly, electric current, continuous fiber and set are passed through on cable
Electric pathway is formed after cylinder contact, the volume resistance of the segment of fiber on each electric pathway is greater than self-lubricating contact heating electricity roller
Contact resistance summation, so as to which generated joule can be gathered to greatest extent in each segment of fiber.
Temperature monitoring feedback device is made of multiple groups non-contact temperature sensor, is arranged in formation temperature gradient
In multistage heating area, sensor is not in contact with band-like prepreg, and every group is made of two sensors, in the feeding process,
The two feeds back to temperature controller in prepreg tow sides while thermometric, and temperature controller compared with target temperature, gives birth to real time temperature
At adaptive temperature signal be sent to different voltage controllers, voltage controllers at different levels increase or reduce defeated in each pair of electrode
Enter voltage, whole device is made to be constantly in the state of dynamic equilibrium, is i.e. heating temperature is answered in carbon fiber always warm needed for material solidification
Small range is floated about degree.
The carbon fiber prepreg is discharged in a manner of pulling under tension controller effect, i.e., tension controller is located at band-like
Prepreg is easy to happen in the turning point loosened and the two support farther away sections of roller, and controller main composition part is tensioning
Wheel, tensioning wheel can be moved forward and backward in one direction, and when prepreg somewhere is got loose, tensioning wheel can be to loosening opposite direction
It is mobile, to keep the tensioning state of prepreg.
The fiber cutting apparatus is arranged between principal voltage roller and secondary voltage roller, and ultrasonic knife chip cutting method can be used
Fiber is cut, cutting process does not influence normal print process.The carbon fiber answer material prepreg be it is band-like by carbon fiber yarn,
The materials such as epoxy resin, release paper by film, hot pressing, cooling, overlay film, the composite material that techniques are process, the band such as batch
Wide 1mm-20mm, thickness 0.1mm.
Example 2.
A kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing method, and the method is the specifically used dress
The step of setting,
Step 1: laying prepares and preliminary feeding: organic solvent cleaning printing panel surface uniformly coats release agent, guarantees material strip
It insulate between printing panel, material strip end is first fed into 3D printing module, carbon fiber is loaded on unwinding device 2 and answers material preimpregnation
Material, carbon fiber, which answers material prepreg, should penetrate 3D printing device before starting printing.
Step 2: tensioning material strip and setting temperature program: according to the mobile tensioning wheel of the elastic situation of band, guaranteeing that material strip is in
Tensioning state；According to used material system, temperature control curve between electric rollers at different levels is set, the position of feedback device is detected
It sets, it is ensured that accurate acquisition material strip temperature of each section.
Step 3: examining each electric pathway on-off signal: the cable that pulls out fastly that every group of electrode is drawn is respectively connected to multi-input direct current
Power supply, temperature controller at different levels, current controller draw the signal output end that cable is respectively connected to computer, are passed through stimulus,
Guarantee normally to be connected between electric rollers at different levels.
Step 4: the printing generation for obtaining carbon fibre composite setting print track: is sliced by 3D printing geometrical model
Code generates the final print code with varied angle printing and adaptive temperature control by postpositive disposal, utilizes data transmission media
It imports in printing equipment, carries out print routine preparation.
Step 5: applying pressure and start to print: moved using printing equipment Z-direction to apply pressure, starting printing dress to material strip
It sets, the prepreg being crimped on unwinding device 2 peels off upper surface isolation film by isolation film wrap-up 3 first, is then passed through and adds
Thermoelectricity roller 9, exposed carbon fiber answer material and are in contact with electric roller；Heating voltage roller 13 is led to respectively by the external formula cable 15 that pulls out fastly
Enter electric current, size of current is respectively 0.5A and 1A, and after primary heating, carbon fiber answers material prepreg contact principal voltage roller
12, here, finally, prepreg that is cured and attaching on the table is compacted by secondary voltage roller 6, pressure size is
0.6MPa, swing mechanism 1 can drive print module to do the curvilinear motion of smooth steady, to meet the precision of final finished and outer
It sees and requires.
Step 6: demoulding and finishing: after demoulding, cutting finishing being carried out to it according to the profile of designed component, is obtained final
Carbon-fiber Reinforced Plastics Component.
Example 3.
As shown in figure 3, the present embodiment is a kind of specific varied angle electrical loss self-heating 3D printing device, the laying pressure
Roller mechanism includes secondary pressure roller 16, main pressure roller 17, pressure roller rocker arm 18 and spring 19, and described device housing bottom is provided with through-hole, described
Through-hole is internally provided with main pressure roller 17, and a pressure roller rocker arm 18, the pressure roller rocker arm is respectively arranged in the outer two sides of described device housing chamber
18 one end connecting springs 19, the pressure roller rocker arm 18 are provided with secondary pressure roller 16 far from spring one end.The carbon fiber composite
Expect 3D printing head, it is characterised in that: the electrode roller set includes heating electrode roll unit, the heating electrode roll unit
Including graphite copper sheathing 20 and threaded mandrel 1, described device shell backboard is provided with threaded hole, the internal whorl of the threaded hole
It is provided with threaded mandrel 1, optical axis of the mandrel on the inside of device housing is rotatablely installed the graphite copper sheathing 20, described to add
The quantity of thermode roller units is at least 5.The overlay film lining paper guide roller group includes guiding roller unit, and the rod guiding is single
Member includes nylon roller 22, and threaded mandrel 5 23, corresponding position is provided with threaded hole, the threaded hole on described device shell backboard
Internal screw thread is provided with threaded mandrel 5 23, and five middle-end of threaded mandrel is rotatably equipped with nylon roller 22, the guide roller list
First quantity is at least four.The material strip strainer includes rubber rollers 24, mandrel 2 25, threaded mandrel 4 26, the screw thread heart
Axis 3 27 is tensioned rocker arm 28, and electromagnetic damper 29 and gear drive 30, described device shell backboard are provided with threaded hole one,
The internal whorl of the threaded hole one is provided with threaded mandrel 3 27, and 3 27 middle-end of threaded mandrel is provided with tensioning rocker arm
28,28 middle-end of tensioning rocker arm is fixedly connected with electromagnetic damper 29, the gear drive 30 and the electromagnetic damping
Device 29 is fixedly mounted, and the rocker arm is provided with through-hole far from 3 27 one end of threaded mandrel, is provided with mandrel 2 25 in the through-hole,
The mandrel 2 25 is fixedly connected with gear drive 30 far from described device shell one end, and 2 25 middle-end of mandrel fixes 16
Rubber rollers 24 are installed, described device shell backboard and 2 25 motion path corresponding position of mandrel are provided with sliding slot, the dress
It sets shell backboard and is provided with threaded hole two, the threaded hole two is internally provided with threaded mandrel 4 26, in the threaded mandrel 4 26
End is rotatably equipped with rubber rollers 24.The supporting mechanism includes bearing 31, cushion block 32 and the support of bearing 33, described device shell
Two sides are respectively fixedly connected with a cushion block 32, and the cushion block 32 inlays the inner ring of connection bearing 31, the axis far from device housing side
Hold the outer ring that bracket inlays connection bearing 33.The material strip jack includes rewinding disk 38, discharge plate 39, shaft 40, band biography
Motivation structure 41, DC speed-reducing 42, the shell backboard middle part are fixedly installed with DC speed-reducing 42, and the direct current slows down
One end of motor 42 is fixedly connected with belt driver 41, and the belt driver other end is fixedly connected with shaft 40, described
Shell corresponding position is provided with sliding slot, and the rewinding disk 38 embeds electromagnetic damper, and the electromagnetic damper through-hole, which is fixedly connected, to be turned
Axis, the electromagnetic damping outer wall are fixedly connected with rewinding disk 38, and 40 middle-end of shaft is rotatablely installed a discharge plate 39.The revolution
Mechanism includes ring flange 34, electric slip ring 35, stepper motor 36 and electric machine support 37, and described device case top is fixedly connected with a method
Blue disk 34 is provided with through-hole at 34 rotating shaft of ring flange, and the through-hole is fixedly connected with 36 shaft of a stepper motor, the stepping
36 shaft of motor rolls one electric slip ring 35 of installation, and an electric machine support 37 is fixedly mounted in the motor bottom.In the electric slip ring 35
Layer outlet and each threaded mandrel 1, the DC speed-reducing 42 and the stepper motor 36 are electrically connected, the electricity
35 outer layer outlet of slip ring and external control devices are electrically connected.
Part that the present invention does not relate to shows and has technology identical or can be realized by using the prior art.
Claims (10)
1. a kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing device, including print head, it is characterised in that described
Print head is mounted on the lower part of varied angle swing mechanism (1), which is connected to the branch of movement executing mechanism
It supports end and is to swing axis with the vertical line of principal voltage roller (12) and plate contact point；The print head includes that carbon fiber answers material
Tow unreels (2), winder roller (3), receives lining paper roller (7), directive wheel (8), multistage self-lubricating conduction roller (9), tension control
Device (10), fiber cutting apparatus (11), principal voltage roller (12), secondary voltage roller (6) and temperature sensor (5) processed, multistage self-lubricating
Conductive roller (9) setting answers the lower part that material tow unreels (2) in carbon fiber, and winder roller (3) and receipts lining paper roller (7) are split
(8) two side of directive wheel, directive wheel (8) answers material tow close to carbon fiber and unreels (2) arrangement, self-lubricating conduction roller (9) He Zhu electricity
The mandrel of pressure roller (12) is fixed in printhead body, and principal voltage roller (12) is located at the lowest part and and panel of printhead body
It is in contact, secondary voltage roller (6) is mounted on the exit side of principal voltage roller (12) and provides compaction force for multiple material interlayer；Tension controller
(10) it is mounted on and is easy to happen in material transmit process in the turning point loosened or the two support farther away sections of roller spacing, it is non-
The temperature sensor (5) of contact is mounted in printhead body to by conductive roller (9), secondary voltage roller (6) and principal voltage
The material surface temperature of roller (12) carries out real-time monitoring and feeds back to voltage controller, and carbon fiber answers material between controlling each section of electric roller
Spontaneous heating temperature；Fiber cutting apparatus (11) is mounted between principal voltage roller (12) and secondary voltage roller (6) for quickly solid
The thermosetting property carbon fiber for changing printing shaping is answered material and is cut off.
2. carbon fiber according to claim 1 answers material varied angle electrical loss self-heating 3D printing device, it is characterised in that: institute
The varied angle swing mechanism (1) stated by the way of electric-machine directly-driven, insert according to adjacent both ends in print track by the angle of rotation
The angle of straight line is mended, and continuous and stable rotates when variable angle occurs in interpolation straight line, the principal voltage roller and panel
Contact point be in always varied angle rotation central point, the secondary voltage roller in varied angle rotary course the moment with printed
Composite material section be in contact and utilize spring (4) provide compaction effort, answer material with carbon fiber and sliding friction do not occur.
3. carbon fiber according to claim 1 answers material varied angle electrical loss self-heating 3D printing device, it is characterised in that institute
The carbon fiber stated answers material tow and unreels (2) mainly in the material prepreg for having lining paper and isolation film, winder roller
(3), lining paper roller (7) are received to arrange at an angle, guarantees that fiber without hindrance can enter ladder with diaphragm and lining paper removing
In the conductive roller (9) of shape arrangement, winder roller (3) and receipts lining paper roller (7) are connected with motor, and motor drives winder roller
(3) and lining paper roller (7) are received, and then drives carbon fiber to answer material tow and unreel (2) and persistently rotates and unreel.
4. carbon fiber according to claim 1 answers material varied angle electrical loss self-heating 3D printing device, it is characterised in that: institute
The conductive roller (9) stated is self-lubricating contact heating electricity roller, it is using the good conductor copper sleeve of electricity as main body, the main body
On be provided with several uniformly distributed contact holes, be inlaid with graphite block in hole, in metal support mandrel, mandrel is fixed on to be beaten the barrel contacts
It printing in the bearing hole in head main body, is connected on the outside of metal core axle and pulls out formula transmission cable fastly, cable is that metal core axle passes to electric current,
Electric pathway is formed after continuous fiber and barrel contacts, the volume resistance of the segment of fiber on each electric pathway is greater than self-lubricating and contacts
Formula heats the summation of the contact resistance of electric roller.
5. carbon fiber according to claim 1 answers material varied angle electrical loss self-heating 3D printing device, it is characterised in that temperature
Spending sensor (5) is non-contact temperature sensor: multiple groups non-contact temperature sensor constitutes temperature monitoring feedback device, temperature
Degree sensor (5) is arranged in the multistage heating area of formation temperature gradient, and temperature sensor (5) is not sent out with band-like prepreg
Raw contact, every group of two sensors are respectively placed in prepreg two sides, and the two feeds back to temperature control in tow sides while thermometric
Device, temperature controller is by real time temperature compared with target temperature, and the adaptive temperature signal of generation is sent to different voltage controllers, respectively
Step voltage controller increases or reduces the input voltage in each pair of electrode, and whole device is constantly in the state of dynamic equilibrium.
6. carbon fiber according to claim 1 answers material varied angle electrical loss self-heating 3D printing device, it is characterised in that: carbon
Fiber prepreg material is discharged in a manner of pulling under tension controller effect, and tension controller is located at band-like prepreg and is easy to happen pine
In de- turning point and the two support farther away sections of roller, controller main composition part is tensioning wheel, and tensioning wheel can be one
It is moved forward and backward on a direction.
7. carbon fiber according to claim 1 answers material varied angle electrical loss self-heating 3D printing device, it is characterised in that: institute
The fiber cutting apparatus stated is arranged between principal voltage roller and secondary voltage roller, and ultrasonic knife chip cutting method can be used and cut fiber,
Cutting process does not influence normal print process.
8. carbon fiber according to claim 1 answers material varied angle electrical loss self-heating 3D printing device, it is characterised in that: institute
The winder roller (3) and lining paper roller (7) stated one of all can be installed or are fitted into.
9. a kind of carbon fiber answers material varied angle electrical loss self-heating 3D printing method, it is characterised in that include the following steps:
Step 1: laying prepares and preliminary feeding: organic solvent cleaning printing panel surface uniformly coats release agent, guarantees material strip
It insulate between printing panel, material strip end is first fed into 3D printing module；After carbon fiber answers material removal film, sequentially entrance is in
The multipair self-lubricating contact heating electricity roller of ladder-like distribution；
Step 2: tensioning material strip and setting temperature program: according to the mobile tensioning wheel of the elastic situation of band, guaranteeing that material strip is in tensioning
State；According to used material system, temperature control curve between electric rollers at different levels is set, detects the position of feedback device, really
Definitely really acquire material strip temperature of each section；
Step 3: examine each electric pathway on-off signal: the cable that pulls out fastly that every group of electrode is drawn is respectively connected to multi-input direct current electricity
Source, temperature controller at different levels, current controller draw the signal output end that cable is respectively connected to computer, are passed through stimulus, protect
It demonstrate,proves and is normally connected between electric rollers at different levels；
Step 4: setting print track: being sliced the print code for obtaining carbon fibre composite by 3D printing geometrical model, leads to
It crosses postpositive disposal and generates the final print code with varied angle printing and adaptive temperature control, beaten using data transmission media importing
During printing equipment is set, print routine preparation is carried out；
Step 5: applying pressure and start to print: moved using printing equipment Z-direction to apply force of impression, starting printing dress to material strip
It sets, starts successively to print according to the shape being pre-designed；
Step 6: demoulding and finishing: after demoulding, cutting finishing being carried out to it according to the profile of designed component, obtains final carbon fiber
Tie up composite element.
10. according to the method described in claim 9, it is characterized in that the force of impression of the print head is 0.6Mpa.
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| CN201910072673.0A CN109532010B (en) | 2019-01-25 | 2019-01-25 | Carbon fiber composite material variable-angle electric loss self-heating in-situ curing device and method |
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| CN113459501A (en) * | 2021-06-16 | 2021-10-01 | 华中科技大学 | Complex bearing part forming device based on fused deposition technology |
| CN114211858A (en) * | 2021-12-24 | 2022-03-22 | 西安增材制造国家研究院有限公司 | Three-dimensional forming system of metal thin strip based on piezoelectric coupling control |
| CN114348784A (en) * | 2022-01-05 | 2022-04-15 | 中国航空制造技术研究院 | Torque transmitter and tow releasing mechanism |
| CN114407351A (en) * | 2022-01-24 | 2022-04-29 | 乐清市智能装备与制造研究院 | Continuous fiber hybrid reinforced thermoplastic matrix composite material additive manufacturing equipment |
| CN116198110A (en) * | 2023-02-02 | 2023-06-02 | 中国科学院福建物质结构研究所 | Printing device and printing method for reducing 3D printing stress of continuous fiber reinforced composite material on line |
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