CN106891518A - What a kind of chopped carbon fiber and thermoplastic composite mixed aligns processing unit - Google Patents
What a kind of chopped carbon fiber and thermoplastic composite mixed aligns processing unit Download PDFInfo
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- CN106891518A CN106891518A CN201710106058.8A CN201710106058A CN106891518A CN 106891518 A CN106891518 A CN 106891518A CN 201710106058 A CN201710106058 A CN 201710106058A CN 106891518 A CN106891518 A CN 106891518A
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- carbon fiber
- melt
- motor
- thermoplastic composite
- chopped carbon
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
- B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/82—Heating or cooling
- B29B7/823—Temperature control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
Abstract
Align processing unit the present invention relates to what chopped carbon fiber and thermoplastic composite mixed, be mainly used in the 3D printing of carbon fibre material, by chopped carbon fiber and resin material mix and be made it is a kind of can thermoplasticity printing silk material.The device is main, and by hot melt heater, air pressure extrusion device, asymmetric uniform stirrer, short carbon nanometer tube fiber polarization treatment device and automatic wire coiling device, this five devices are constituted, and the wherein uniform mixing of carbon fibre composite and the polarization process of chopped carbon fiber is two main process of material modification.The present invention improves the uniformity coefficient of chopped carbon fiber and composite mixing, ensure that the carbon nano tube structure of chopped carbon fiber aligning form and realize the prefabricated of carbon fiber and thermoplastic composite small dimension silk material in the composite.The prefabricated silk material of 3D printing can improve the mechanical performance of carbon fiber structural part printing precision and carbon fiber structural part.
Description
Technical field
Processing unit is aligned the present invention relates to what a kind of chopped carbon fiber and thermoplastic composite mixed.
Background technology
In recent years, developing rapidly with 3D printing technique, carbon fibre material there has also been new shape form.At present,
There is the influence of impurity in high volume production process due to carbon fiber, therefore the continuous CNT needs more long of production are higher
PROCESS FOR TREATMENT cost, therefore chopped carbon fiber is still in occupation of larger carbon fiber market.
Common 3D printing forming technique has：SLA, FDM technology, SLS technologies, LOM technologies and 3DP technologies etc..Its
Middle FDM is most common technology in 3D printing, because its operating cost is low, print quality is good, forming accuracy is high, material category is more and after
Phase processes the advantage such as simple, thus is widely used.
In order to the chopped carbon fiber for realizing CNT form is manufactured by the form of 3D printing, there is presently no short
The processing method that aligns of the carbon fiber in thermoplastic composite matrix is cut, conventional method is mainly chopped carbon at present
Printed after fiber and thermoplastic composite mixing.Chopped carbon fiber is in thermoplastic composite matrix under current hybrid mode
Middle that anisotropic steric form is presented, the mechanical property of the material of carbon fiber is not good under the spread pattern.
The content of the invention
For the process problem of short carbon nanometer tube fibre space orientation in thermoplastic composite matrix, the purpose of the present invention
Be a kind of chopped carbon fiber and thermoplastic composite mixing be provided align processing unit.The device obtains optimization and changes
The carbon fibre composite silk material of property may be directly applied to high accuracy 3D printing carbon fiber structural functor.It is mainly used in carbon fine
Tie up material 3D printing, by chopped carbon fiber and thermoplastic composite mix and be made one kind can carry out it is thermoplastic 3D
Material.CNT can keep the close-packed arrays form for aligning in silk material after device treatment, can be greatly enhanced 3D
The mechanical performance of the carbon fiber structural part under print form.
To achieve the above object, the present invention is adopted the following technical scheme that：
What a kind of chopped carbon fiber and thermoplastic composite mixed aligns processing unit, including hot melt heater, gas
Pressure extrusion device, asymmetric uniform stirrer, short carbon nanometer tube fiber polarization treatment device and automatic wire coiling device；This sets
Standby all of device is all installed on the table, and workbench requirement has good heat-proof quality, and the work of all of device is equal
By main controller controls and distribution.Five devices of the above are controlled by master controller, set interactive display screen and
Button, user can set the heating-up temperature of material, melt chamber operating air pressure, uniform stirring rotating speed, the intensity of polarized electric field and
The specification of rewinding reel.The parameter given by user, microprocessor carries out calculation process, realizes five devices of the above
Coordination Treatment, is finally completed the silk material preparation process that chopped carbon fiber thermoplastic composite is aligned.
The hot melt heater is made up of melt chamber closure, melt cavity, heating tube and thermocouple, the heating
Installed in the bottom of melt cavity, the temperature of melt cavity is detected pipe by thermocouple, and temperature signal is delivered into master
On controller, be compared to for detection temperature signal and |input paramete to determine whether heating tube needs heating by master controller, melts
Material chamber closure is arranged on the top of melt cavity.Heating the position of heater need to consider the temperature field heat of whole device
Transmittance process, it is to be ensured that the product in melt chamber is completely melt that material is also to be completely melt in unidirectional transfer tube, extrusion conduit goes out
The temperature of mouth position thermoplastic material will be less than glass transition temperature and slightly be solidified into thread so as to parcel collection below.
The air pressure extrusion device is by pneumatic system, silencer, gas path pipe, melt chamber closure, stirring motor, molten
Material cavity, adjust pad, cone mouth guide pin bushing, elastic packing cushion block, wire vent conduit, clamp nut, adjust pad, conduit sealing gasket and
Pneumatic system and melt cavity are realized that gas circuit is connected by switching bend pipe composition, the gas path pipe, and silencer is with the shape of pipe screw thread
Formula is connected on the gas outlet of pneumatic system, and during air pressure is extruded, pneumatic system obtains master controller air pressure control letter
Number, gas pressurized treatment is carried out to melt cavity by gas path pipe, realized by melt chamber closure and chamber sealing cushion for cover circle
The sealing of melt cavity, the axle portion of stirring motor realizes sealing by motor axle sealing ring；The adjust pad is located at melt
Cavity and switching bend pipe between, cone mouth guide pin bushing and switching bend pipe be connected through a screw thread, elastic packing cushion block be located at cone mouth guide pin bushing and
Switching bend pipe between, the wire vent conduit is embedded on clamp nut, clamp nut and switching bend pipe threaded connection, adjust pad and
Conduit sealing gasket is installed between clamp nut and switching bend pipe.Chopped carbon is fine during air pressure extrusion device can realize melt chamber
Peacekeeping thermoplastic composite mixture can continuous decrease, realize that mixture gradual change type receives the equal of asymmetric rabbling mechanism
The composite of even stirring and the molten condition of realizing melt chamber can be with certain flow by polarized electric field and from extruding pipe
Middle extrusion.
The asymmetric uniform stirrer is used by stirring motor, motor fastening bolt and sealing gasket, motor shaft
Sealing ring, the holding screw of motor shaft and shaft coupling junction, shaft coupling, shaft coupling with stirring shaft connection place alignment pin, stir
Mix axle, split pin, asymmetric agitating plate and asymmetric dusting cover orifice plate composition；The stirring motor by bolt at motor fastening and
Sealing gasket is arranged on the closure of melt chamber, and motor axle sealing ring is arranged in the rotating shaft of stirring motor and positioned at melt chamber
In seal cap sealing groove, the rotating shaft of stirring motor and shaft coupling are connected by holding screw, and shaft coupling and agitating shaft are by positioning
Pin is attached, and asymmetric agitating plate and asymmetric dusting cover orifice plate are connected by split pin with agitating shaft.Asymmetric is uniform
Agitating device has the thick stirring hole sizer on upper strata and the asymmetric fine ga(u)ge screen of lower floor；Slightly stir hole sizer and can complete bulk in upper strata
The thick stirring of chopped carbon fiber powder and thermoplastic composite, to avoid the blocking of lower floor's fine ga(u)ge screen.The fine ga(u)ge screen of lower floor is
The hole sizer spread pattern of asymmetric, so as to ensure the mixture of same layer height can be flowed in the whipping process of a cycle
Different fine ga(u)ge screens are crossed, the uniform stirring of chopped carbon fiber and thermoplastic composite just can be so realized.
The short carbon nanometer tube fiber polarization treatment device be by fastening ferrite, electric field transmitting antenna, inductance loop seclusion set,
Electric transmitter base, primary magnetic coil, secondary magnetic coil, master controller and hex bolts composition；It is described fastening ferrite and
Electric field transmitting antenna is connected through a screw thread, and inductance loop seclusion set and electric transmitter base are fastened by hex bolts, primary
Magnetic coil is put installed in inductance loop seclusion and two ends are connected on group controller, and secondary magnetic coil is arranged on fastening ferrite
And a termination another termination master controller of electric field transmitting antenna.Launching high voltage electric field by antenna can realize the short of conduction moment
Carbon fiber polarization process is cut, the distribution of electric-field intensity and field needed for it is specific depends primarily on molten thermoplastic composite material base
The viscosity and flow regime of matter.Just can so realize determining for the chopped carbon fiber under molten condition in thermoplastic composite matrix
Processed to arrangement, and its internal carbon nano-tube fibre is presented linear end to end phenomenon, and this will greatly lift composite wood
The mechanical property of material.
The automatic wire coiling device is by parcel motor, reel axle sleeve, reel, extrusion silk material, parcel device pedestal, axial direction
Shifting block, cylinder, pneumatic system, the first cylinder pipeline and the second cylinder pipeline composition；The parcel motor and reel axle sleeve mistake
It is full of cooperation, reel axle sleeve and reel are attached using interference fits, extrusion silk material is wrapped on reel, and parcel motor is arranged on
On parcel device pedestal, parcel device pedestal is installed on the table, and axial shifting block is arranged on the shaft end of cylinder and axially dials
The shift fork of block is stuck on reel, and cylinder is installed on the table, and the first cylinder pipeline and the second cylinder pipeline are installed in gas
On the air distribution hole of dynamic system and cylinder.The extruded velocity matching of silk material in the rotating speed and extruding pipe of parcel motor.Parcel reel
Axial shuttle speed is determined that its speed is mainly determined by the high-pressure gas flow of pneumatic element by reel specification and drum speed
It is fixed.
It is all that interchangeable simple part is easily by the part that thermoplastic composite material is blocked.Generally,
Thermoplastic composite material during reuse in simple contact part can be heated fusing, and continuous wire vent below will not be made
Cheng Tai great is influenceed, and the rear chopped carbon fiber for stirring will not be produced in the thermoplastic composite matrix of molten condition
Reunite and have influence on extrusion pipeline blocking.
Thermoplastic composite material in chopped carbon fiber and thermoplastic composite can using ABS, PLA, PA,
The thermoplastic composite material such as PE, PP and PVC, and carbon fibre material is mainly chopped carbon fiber.
Compared with prior art, Advantageous Effects of the invention are：
Apparatus of the present invention are realized directly makes silk material by chopped carbon fiber and thermoplastic composite, in order to the later stage by silk material
Being placed directly on the 3D printer of conventional FDM forms carries out the printing of carbon fiber structural part, the compound polarization process mode pole
What the earth improve chopped carbon fiber in composite aligns spatial distribution form, and chopped carbon fiber being capable of head and the tail phase
Connect the fiber continuous type for keeping certain.The present invention can provide the printing original of chopped carbon fiber form for the 3D printer of FDM forms
Material.The device can realize the high-precision carbon fibre material structural member of 3D printing, and the structural member in the fixed in advance of material
There is good mechanical performance after being processed to arrangement.
Brief description of the drawings
Fig. 1 is the structural representation for aligning processing unit of chopped carbon fiber of the present invention and thermoplastic composite mixing
Figure.
Fig. 2 is the structure cutting for aligning processing unit of chopped carbon fiber of the present invention and thermoplastic composite mixing
Figure.
Fig. 3 is the polarization structure for aligning processing unit of chopped carbon fiber of the present invention and thermoplastic composite mixing
Figure.
Fig. 4 is the polarization principles for aligning processing unit of chopped carbon fiber of the present invention and thermoplastic composite mixing
Figure.
Fig. 5 is the system principle for aligning processing unit of chopped carbon fiber of the present invention and thermoplastic composite mixing
Figure.
Specific embodiment
Specific embodiment of the invention is described in detail in conjunction with accompanying drawing.
As shown in Figure 1, Figure 2 and Figure 3, the treatment that aligns of a kind of chopped carbon fiber and thermoplastic composite mixing is filled
Put, it is characterised in that fine including hot melt heater, air pressure extrusion device, asymmetric uniform stirrer, short carbon nanometer tube
Dimension polarization treatment device and automatic wire coiling device；All on workbench 1, workbench 1 is required all of device of the equipment
The work for having good heat-proof quality, all of device is controlled and distribution by master controller 2.
The hot melt heater is made up of melt chamber closure 6, melt cavity 8, heating tube 29 and thermocouple 30, institute
Heating tube 29 is stated installed in the bottom of melt cavity 8, the temperature of melt cavity 8 detected by thermocouple 30, and by temperature
, on master controller 2, be compared to for detection temperature signal and |input paramete to determine heating tube 29 by master controller 2 for signal transmission
Whether heating is needed, and melt chamber closure 6 is arranged on the top of melt cavity 8 to realize insulation effect, if heat insulation effect is not
Substantially, can be in the outer wrapping asbestos of melt cavity 8.
The air pressure extrusion device is by pneumatic system 3, silencer 4, gas path pipe 5, melt chamber closure 6, stirring electricity
Machine 7, melt cavity 8, adjust pad 31, cone mouth guide pin bushing 32, elastic packing cushion block 33, wire vent conduit 28, clamp nut 34, adjustment
Pad 35, conduit sealing gasket 36 and switching bend pipe 37 are constituted, and pneumatic system 3 and melt cavity 8 are realized gas by the gas path pipe 5
Road is connected, and silencer 4 is connected on the gas outlet of pneumatic system 3 in the form of pipe screw thread, pneumatic during air pressure is extruded
System 3 obtains the air pressure control signal of master controller 2, and gas pressurized treatment is carried out to melt cavity 8 by gas path pipe 5, passes through
Melt chamber closure 6 and chamber sealing cushion for cover circle 21 realize the sealing of melt cavity 8, and the axle portion of stirring motor 7 is used by motor shaft
Sealing ring 17 realizes sealing；The adjust pad 31 be located at melt cavity 8 and switching bend pipe 37 between, cone mouth guide pin bushing 32 and switching
Bend pipe 37 is connected through a screw thread, and elastic packing cushion block 33 is located between cone mouth guide pin bushing 32 and switching bend pipe 37, the wire vent conduit
28 are embedded on clamp nut 34, and clamp nut 34 and switching bend pipe 37 are threadedly coupled, and adjust pad 35 and conduit sealing gasket 36 are equal
Between clamp nut 34 and switching bend pipe 37.When air pressure reaches preset value, and ensure that silk material is continuously extruded
When silk material with extrusion just solidifies, master controller 2 will control pneumatic system 3 to realize that pulsing packing is processed.In extrusion,
The thermoplastic composite of molten condition is stabilization circulation in pipeline is extruded.
The asymmetric uniform stirrer is by stirring motor 7, motor fastening bolt and sealing gasket 16, motor shaft
Determined with stirring shaft connection place with the holding screw 18 of sealing ring 17, motor shaft and shaft coupling junction, shaft coupling 19, shaft coupling
Position pin 20, agitating shaft 22, split pin 23, asymmetric agitating plate 24 and asymmetric dusting cover orifice plate 25 are constituted；The stirring motor 7 leads to
Cross bolt and sealing gasket 16 at motor fastening to be arranged on melt chamber closure 6, motor axle sealing ring 17 is arranged on stirring electricity
In the rotating shaft of machine 7 and in the seal groove of melt chamber closure 6, the rotating shaft of stirring motor 7 and shaft coupling 19 pass through clamp screw
Nail 18 is connected, and shaft coupling 19 and agitating shaft 22 be attached by alignment pin 20, asymmetric agitating plate 24 and asymmetric fine mesh
Plate 25 is connected by split pin 23 with agitating shaft 22.The power of rabbling mechanism is provided by stirring motor 7, stirring motor 7
Power passes to agitating shaft 22 by shaft coupling 19, so that asymmetric agitating plate 24 and asymmetric on agitating shaft 22 are thin
The synchronous axial system of sieve tray 25 so that chopped carbon fiber and thermoplastic composite in melt chamber 8 are sufficiently stirred for.
Reference picture 3 and Fig. 4, it is uniform to switching bend pipe 37 end in short carbon nanometer tube fiber polarization treatment device
Chopped carbon fiber and thermoplastic composite mixture carry out high voltage electric field polarization process.In Fig. 3, ferrite 38 and electric field are fastened
Transmitting antenna 39 is attached by screw thread, and inductance loop seclusion set 40 and electric transmitter base 41 are carried out tightly by hex bolts 44
Gu, primary magnetic coil 42 is arranged on inductance loop seclusion set 40 and two ends are connected on group controller 2, and secondary magnetic coil 43 is installed
On fastening ferrite 38 and another termination master controller 2 of a termination electric field transmitting antenna 39.On the interface of controller 2,
One end of secondary coil 43 and conductive antenna 39 are connected, and other end ground connection, primary coil 42 and secondary coil 43 form electromagnetism coupling
Close, and primary coil 42 two ends and pulse ions device connection.Coupling send out effect big under, conductive antenna 39 is used as sun
Pole produces potential higher.Under the electric field action of antenna 39, chopped carbon fiber can polarize moment in the mixture of molten condition,
And end to end linear array state is kept, so as to complete the treatment of isotropic, improve the print performance of extrusion silk material.
Reference picture 4 understands that uniformly chopped carbon is fine for the coupling and circuit form and place of primary coil 42 and secondary coil 43
The polarization spread pattern of the CNT of peacekeeping thermoplastic composite mixture middle short fiber.
Reference picture 3 and Fig. 4 understand, during specific polarization, regulation antenna 39 acts on switching bend pipe 37 end
During the size of electric-field intensity, the gentle flowing velocity extruded of viscosity of comprehensive molten condition thermoplastic composite really
It is fixed, the vector correlation of electric field is determined by optimizing.Must be avoided during the selection of switching bend pipe 37 from conductive gold
Category material is in case the electrostatic screen of the electric field inside occurring.Here switching bend pipe 37 can select some ceramic composites.
With continued reference to Fig. 1 and Fig. 2, the automatic wire coiling device is by parcel motor 9, reel axle sleeve 26, reel 10, extrusion
Silk material 27, parcel device pedestal 11, axial shifting block 12, cylinder 13, pneumatic system 3, the first cylinder pipeline 14 and the second cylinder
Pipeline 15 is constituted；The parcel motor 9 and the interference fit of reel axle sleeve 26, reel axle sleeve 26 and reel 10 are entered using interference fits
Row connection, extrusion silk material 27 is wrapped on reel 10, and parcel motor 9 is arranged on parcel device pedestal 11, parcel device pedestal
11 are arranged on workbench 1, and the shift fork of shaft end and axial shifting block 12 that axial shifting block 12 is arranged on cylinder 13 is stuck in reel 10
On, cylinder 13 is arranged on workbench 1, and the first cylinder pipeline 14 and the second cylinder pipeline 15 are installed in the He of pneumatic system 3
On the air distribution hole of cylinder 13.The rotary power of reel 10 is provided by parcel motor 9, and internal connection exist it is circumferentially positioned to protect
Card torque transmission.The axial reciprocating movement of reel 10 is controlled by axial shifting block 12, axial shifting block 12 and cylinder 13
Bar shaft end carries out the connection of shape face by four aspects, when reel 10 will take out, the realization steering of axial shifting block 12 is stirred by unscrewing
Avoid.Cylinder 13 realizes that gas circuit is connected by the first cylinder pipeline 14 and the second cylinder pipeline 15 and pneumatic system 3.First gas
The cylinder pipeline 15 of earthen pipe road 14 and second constantly switches inlet, outlet road, to realize moving back and forth for reel 10, to ensure silk material 27
Can equably be coiled on reel 10.The rotating speed of parcel motor 9 and the throughput of cylinder 13 are controlled by master controller 2
System, the control of master controller 2 is after silk material characterisitic parameter and reel specification matching primitives are input into by user mutual formula
Realize.
With continued reference to Fig. 2, in melt cavity 8, loading surface is the conical surface, the thermoplastic of so larger to viscosity molten condition
Property composite there is certain guidance quality, the extrusion of thermoplastic composite is internally easily realized in the presence of air pressure.
With continued reference to Fig. 2, in melt cavity 8, it is possible to achieve maximum specification is chopped for diameter 180mm's and 200mm high
The blending space of carbon fiber and thermoplastic composite material, its melt chamber can realize the pre- of 3D printing carbon fibre material structural member
First silk material optimization processing, just can so carry out the shaping of FDM high-precision carbon fibers structural member, and be easily achieved carbon fibre material
The flexibility of shaping.
Reference picture 5, the course of work of whole device is as follows：
Determine the relevant parameter of selected materials（Viscosity under glass transition temperature, the molten condition of thermoplastic composite with
And the mesh number of chopped carbon fiber）, reel specifications parameter and presetting atmospheric pressure value, then by the above parameter pass through keyboard
Or membrane keyboard is input in master controller 2, at this moment interactive display can be shown at parameter value and the computing of the input of master controller 2
The real-time display operating parameter values of reason（Melt chamber air pressure and temperature value, parcel speed and silk material collect length value）.Ginseng is set
After number, the powder stock of chopped carbon fiber and thermoplastic composite is uniformly deposited in melt cavity 8.Then close melt
Chamber closure 6, then clicks the start button of master controller 2, and master controller 2 is powered to heating tube 29, heating tube 29
The Joule heat of generation is thermally conducted in mixing material by melt cavity 8.During heating, the real-time monitoring of thermocouple 30
The temperature of mixing material in melt cavity 8, when the melt temperature of thermoplastic composite is reached, master controller 2 by pair plus
The power supply control of heat pipe 29 is carrying out isothermal holding.Then, master controller 2 is powered to stirring motor 7, so as to by melt cavity 8
In mixing material uniform stirring treatment.It is main by the delay process of master controller 2 and after ensureing mixing material uniform stirring
Controller 2 is powered to pneumatic system 3, and pneumatic system 3 carries out pressurized treatments to melt cavity 8.When the air pressure of melt cavity
When the air pressure value of feedback of sensor reaches preferably extrusion operating air pressure, pneumatic system 3 carries out pressurize treatment to melt cavity 8.
During wire vent, master controller 2 is powered to polarization device, so that electric field transmitting antenna 39 produces polarized electric field,
Polarized electric field causes that the chopped carbon fiber in the thermoplastic compound of the molten condition in switching bend pipe 37 is produced and polarizes and protect
Hold and align.Squeezed from the air pressure of wire vent conduit 28 when the mixed silk material of chopped carbon fiber and thermoplastic compound for having polarized
Go out and by hand by silk material pre-wound out it is a bit of on reel 10 after, master controller 2 carries out PWM tune to parcel motor 9
Speed treatment, so that it is guaranteed that the rotating speed of the parcel motor 9 of setting, parcel motor 9 is with the rotation of movable reel 10 so as to enter to extrusion silk material
Row is collected.At the same time, the control pneumatic system 2 of master controller 2 provides cylinder 13 air pressure and commutation treatment, in the first cylinder tube
The gas circuit commutation of the cylinder pipeline 15 of road 14 and second realizes the axial reciprocating movement of the axial shifting block 12 of the end of cylinder 13, axle
Moved back and forth so as to realize that the silk material of extrusion can be collected equably on reel 10 with movable reel to shifting block 12.Work as silk material
All after extrusion, master controller 2 is closed heat heater, asymmetric uniform stirrer, air pressure extrusion device, short successively
Carbon nano-tube fibre polarization treatment device and automatic wire coiling device.
What chopped carbon fiber of the invention and thermoplastic composite mixed aligns processing unit, can be applied to the above
The high-performance FDM silk materials for being illustrated it is prefabricated, can also be applied to the chopped carbon fiber and thermoplastic composite material for aligning
Expect the extrusion sprinkler design of polarization process.
Claims (6)
1. what a kind of chopped carbon fiber and thermoplastic composite mixed aligns processing unit, it is characterised in that including heat
Molten heater, air pressure extrusion device, asymmetric uniform stirrer, short carbon nanometer tube fiber polarization treatment device and automatic
Parcel device；The all of device of the equipment is all installed in workbench（1）On, workbench（1）It is required that have good heat-proof quality,
The work of all of device is by master controller（2）Control and distribution.
2. what chopped carbon fiber according to claim 1 and thermoplastic composite mixed aligns processing unit, its
It is characterised by, the hot melt heater is by melt chamber closure（6）, melt cavity（8）, heating tube（29）And thermocouple
（30）Composition, the heating tube（29）Installed in melt cavity（8）Bottom, melt cavity（8）Temperature pass through thermocouple
（30）Detected, and temperature signal is delivered to master controller（2）On, master controller（2）By detection temperature signal and input
Parameter is compared to determine heating tube（29）Whether heating, melt chamber closure are needed（6）Installed in melt cavity（8）Top
End.
3. what chopped carbon fiber according to claim 1 and thermoplastic composite mixed aligns processing unit, its
It is characterised by, the air pressure extrusion device is by pneumatic system（3）, silencer（4）, gas path pipe（5）, melt chamber closure
（6）, stirring motor（7）, melt cavity（8）, adjust pad（31）, cone mouth guide pin bushing（32）, elastic packing cushion block（33）, wire vent leads
Pipe（28）, clamp nut（34）, adjust pad（35）, conduit sealing gasket（36）With switching bend pipe（37）Composition, the gas circuit pipe
Road（5）By pneumatic system（3）With melt cavity（8）Realize that gas circuit is connected, silencer（4）It is connected in the form of pipe screw thread pneumatic
System（3）Gas outlet on, air pressure extrude during, pneumatic system（3）Obtain master controller（2）Air pressure control signal,
By gas path pipe（5）To melt cavity（8）Gas pressurized treatment is carried out, by melt chamber closure（6）With chamber sealing cushion for cover
Circle（21）Realize melt cavity（8）Sealing, stirring motor（7）Axle portion pass through motor axle sealing ring（17）Realize sealing；
The adjust pad（31）Positioned at melt cavity（8）With switching bend pipe（37）Between, cone mouth guide pin bushing（32）With switching bend pipe（37）
It is connected through a screw thread, elastic packing cushion block（33）Positioned at cone mouth guide pin bushing（32）With switching bend pipe（37）Between, the wire vent conduit
（28）It is embedded in clamp nut（34）On, clamp nut（34）With switching bend pipe（37）Threaded connection, adjust pad（35）And conduit
Sealing gasket（36）It is installed in clamp nut（34）With switching bend pipe（37）Between.
4. what chopped carbon fiber according to claim 1 and thermoplastic composite mixed aligns processing unit, its
It is characterised by, the asymmetric uniform stirrer is by stirring motor（7）, bolt and sealing gasket at motor fastening（16）、
Motor axle sealing ring（17）, motor shaft and shaft coupling junction holding screw（18）, shaft coupling（19）, shaft coupling and stirring
The alignment pin of shaft connection place（20）, agitating shaft（22）, split pin（23）, asymmetric agitating plate（24）With asymmetric dusting cover orifice plate
（25）Composition；The stirring motor（7）By bolt and sealing gasket at motor fastening（16）Installed in melt chamber closure（6）
On, motor axle sealing ring（17）Installed in stirring motor（7）Rotating shaft on and positioned at melt chamber closure（6）Seal groove
In, stirring motor（7）Rotating shaft and shaft coupling（19）By holding screw（18）Connection, shaft coupling（19）And agitating shaft（22）It is logical
Cross alignment pin（20）It is attached, asymmetric agitating plate（24）With asymmetric dusting cover orifice plate（25）Pass through split pin（23）With stir
Mix axle（22）Connection.
5. what chopped carbon fiber according to claim 1 and thermoplastic composite mixed aligns processing unit, its
It is characterised by, the short carbon nanometer tube fiber polarization treatment device is by fastening ferrite（38）, electric field transmitting antenna（39）, line
Circle separation sleeve（40）, electric transmitter base（41）, primary magnetic coil（42）, secondary magnetic coil（43）, master controller（2）With six
Corner bolt（44）Composition；The fastening ferrite（38）With electric field transmitting antenna（39）It is connected through a screw thread, inductance loop seclusion set
（40）With electric transmitter base（41）By hex bolts（44）Fastened, primary magnetic coil（42）Installed in inductance loop seclusion
Set（40）Go up and two ends are connected on group controller（2）On, secondary magnetic coil（43）Installed in fastening ferrite（38）It is upper and
One termination electric field transmitting antenna（39）Another termination master controller（2）.
6. what chopped carbon fiber according to claim 1 and thermoplastic composite mixed aligns processing unit, its
It is characterised by, the automatic wire coiling device is by parcel motor（9）, reel axle sleeve（26）, reel（10）, extrusion silk material（27）、
Parcel device pedestal（11）, axial shifting block（12）, cylinder（13）, pneumatic system（3）, the first cylinder pipeline（14）And second gas
Earthen pipe road（15）Composition；The parcel motor（9）With reel axle sleeve（26）Interference fit, reel axle sleeve（26）And reel（10）Adopt
It is attached with interference fits, extrudes silk material（27）It is wrapped in reel（10）On, parcel motor（9）Installed in parcel device pedestal
（11）On, parcel device pedestal（11）Installed in workbench（1）On, axial shifting block（12）Installed in cylinder（13）Shaft end and
Axial shifting block（12）Shift fork be stuck in reel（10）On, cylinder（13）Installed in workbench（1）On, the first cylinder pipeline（14）With
And the second cylinder pipeline（15）It is installed in pneumatic system（3）And cylinder（13）Air distribution hole on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110667114A (en) * | 2019-10-17 | 2020-01-10 | 吉林大学 | Integrated printing device and printing method for continuous fiber embedded material |
| CN111923404A (en) * | 2020-03-12 | 2020-11-13 | 西安理工大学 | Plastic powder 3D printing interface enhancing method |
| CN112619807A (en) * | 2020-11-30 | 2021-04-09 | 湖南东映碳材料科技有限公司 | Carbon fiber crushing apparatus |
| CN113018514A (en) * | 2021-04-29 | 2021-06-25 | 承德石油高等专科学校 | Heterogeneous bone tissue engineering scaffold, extrusion assembly and preparation method thereof |
| CN114083734A (en) * | 2021-11-17 | 2022-02-25 | 中国地质大学（北京） | Preparation device and preparation method of oriented conductive composite material |
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| CN114083734A (en) * | 2021-11-17 | 2022-02-25 | 中国地质大学（北京） | Preparation device and preparation method of oriented conductive composite material |
| CN114083734B (en) * | 2021-11-17 | 2022-07-26 | 中国地质大学（北京） | Preparation device and preparation method of oriented conductive composite material |
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