CN110293679A - The device and method that electrostatic sub-wire method prepares multiple dimensioned fibre reinforced composites - Google Patents
The device and method that electrostatic sub-wire method prepares multiple dimensioned fibre reinforced composites Download PDFInfo
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- CN110293679A CN110293679A CN201910579766.2A CN201910579766A CN110293679A CN 110293679 A CN110293679 A CN 110293679A CN 201910579766 A CN201910579766 A CN 201910579766A CN 110293679 A CN110293679 A CN 110293679A
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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
- B29C64/141—Processes of additive manufacturing using only solid materials
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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
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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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
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses the device and method that electric sub-wire method prepares multiple dimensioned fibre reinforced composites, device includes rack, molding machine, electrostatic filament dividing device and power spreading device；Electric sub-wire device includes sub-wire platform, the first briquetting sub-wire and the second briquetting, sub-wire platform top offers silk pressing groove, sub-wire platform through-hole and the coaxial arrangement of workbench through-hole, silk pressing groove two sides offer two groups of sub-wire grooves, two groups of sub-wire grooves are oppositely arranged on sub-wire platform through-hole two sides, every group of sub-wire groove includes several sub-wire grooves being parallel to each other, and silk pressing groove floor is hinged with the first briquetting and has the second briquetting；Molding machine includes the molding die and punch-pin of coaxial arrangement, and punch-pin is arranged in molding die.It can be realized the composite material for preparing multiple dimensioned fiber, it can while continuous fiber and chopped firbre reinforced composite are prepared, preparation method and process continuously, quickly and efficiently, can combine the performance characteristics of continuous fiber and chopped firbre reinforced composite.
Description
Technical field
The invention belongs to technical field of composite preparation, and in particular to a kind of electrostatic sub-wire method prepares multiple dimensioned fiber and increases
The device and method of strong composite material.
Background technique
In the composite, reinforcement is the main substance for improving basis material mechanical property, and wherein fiber is to act on most
Obviously, most widely used a kind of reinforcing material.Fibre reinforced composites are divided into continuous fiber according to fiber different shape
Enhance composite material and chopped firbre reinforced composite, and in the conditions such as matrices of composite material and enhancing interfacial structure property
Under unanimous circumstances, continuous fiber length is longer, and content is higher, and Strengthening and Toughening effect is more obvious.However, continuous in actually preparation
During fibre reinforced composites, easily cause uneven fiber dispersion, material internal generation hole and fiber that group occurs
It is poly-, influence the Strengthening and Toughening effect of fiber.Continuous fiber is generally unidirectional array in enhancing composite material, and can only increase certain
The intensity in one direction, to influence the reinforcing effect and application range of composite material.Opposite chopped strand is in enhancing composite wood
Being typically in disorderly arranged, prepared composite materials property in material to be in is isotropism, but its fiber volume contains
It measures and is also easy to produce stress concentration at lower, fiber ends, while staple fiber is unable to control the equivalent degree of orientation of continuous fiber, weaken
The humidification of fiber, causes the mechanical properties such as intensity, the rigidity of short fiber reinforced composite to can not show a candle to similar long fibre
Enhance comprehensive performance of the composite material under same fiber volume fraction.So to fibre length, content and machine direction
Controllability is the important parameter that fibre reinforced composites must be taken into consideration from optimization performance perspective.
Currently, the common preparation method for preparing fibre reinforced composites has impregnating slurry technique, pre-shaping blank, pressure
Diafiltration, electrophoretic deposition moulding process, direct oxidation deposition etc., and fiber-reinforced composite material prepared by these preparation methods
Material, is easy to crack in intrinsic silicon and stomata, destroys the globality of composite material, and cannot prepare simultaneously multiple dimensioned
Fibre reinforced composites constrain the purpose for realizing the enhancing of multiple dimensioned directional fiber, can not combine continuous fiber with
The advantages of short fiber reinforced composite, to limit the overall performance of fibre reinforced composites.
Summary of the invention
To solve the above-mentioned problems, the present invention provides the devices that electric sub-wire method prepares multiple dimensioned fibre reinforced composites
And method may be implemented to prepare more rulers simultaneously in the case where taking into account the preparation characteristic of continuous fiber and chopped firbre reinforced composite
Spend fibre reinforced composites.
In order to achieve the above objectives, a kind of electrostatic sub-wire method of the present invention prepares the dress of multiple dimensioned fibre reinforced composites
It sets, including rack, is equipped in rack for carrying out molding molding machine to fibre reinforced composites, is used for from bottom to top
The electrostatic filament dividing device of sub-wire is carried out to fiber and is used for molding machine middle berth powder body power spreading device；The electricity sub-wire device
Including sub-wire platform, the first briquetting sub-wire and the second briquetting, sub-wire platform top offers powdering groove, offers in powdering groove point
Silk platform through-hole, the sub-wire platform through-hole and the coaxial arrangement of workbench through-hole, it is recessed that powdering groove two sides are relatively set with two groups of sub-wires
Slot, two groups of sub-wire grooves are oppositely arranged on sub-wire platform through-hole two sides, and every group of sub-wire groove includes several points being parallel to each other
Silk groove, powdering groove floor are hinged with the first briquetting and have the second briquetting；The molding machine includes the molding of coaxial arrangement
Mold and punch-pin, the punch-pin are arranged in molding die.
Further, rack includes lead screw, and the power spreading device includes funnel, gear and rotary shaft, spiral shell on the lead screw
Line is connected with fixed frame, and fixed frame can move horizontally on lead screw, and the funnel is fixed on fixed frame lower end, and the gear is set
It sets in funnel, tangent with the inner wall on two inclined-planes of funnel on the outside of gear, the gear and rotary shaft are connected by key, described
Rotary shaft one end is stretched out outside funnel to be connected with power device.
Further, hopper side walls offer the mounting hole for passing through rotary shaft, and the diameter of the mounting hole is less than tooth
The outer diameter of wheel.
Further, molding die and punch-pin are installed on lifting platform, are provided on the lifting platform from bottom to top
One support plate, the second support plate and third support plate are fixed with guide rail in the first support plate, and the guide rail upper end is fixed with third
Support plate is equipped with sliding block on guide rail, and sliding block can be fixed on sliding block along guide rail axial direction straight reciprocating motion, the second support plate
On, sliding block is driven by linear motor；It is provided with molding die in third support plate, is provided with punch-pin in the second support plate, at
Pattern tool, punch-pin are coaxially disposed with the sub-wire platform through-hole of sub-wire platform, and when sliding block drives punch-pin to rise, punch-pin outer surface with
Molding die inner surface is engaged.
Further, workbench is installed, the workbench roof offers workbench through-hole, electrostatic on the bottom plate of rack
Sub-wire device is fixed on the roof of workbench.
Further, the diameter of sub-wire groove is 1mm~3mm.
Further, the spacing of sub-wire groove is 7mm~10mm.
A kind of method that electrostatic sub-wire method prepares fibre reinforced composites, this method are based on dress described in claim 1
It sets, comprising the following steps:
The thickness of step 1, the upper surface for making punch-pin and molding die upper surface at a distance of one layer of composite material；
Step 2 moves horizontally fixed frame, when fixed frame moves to sub-wire device side, rotary shaft is made to start to drive
Gear rotation, drives the powder in funnel to start to leak out, and spreads and spill to the upper surface of punch-pin, that is, starts powdering movement；
Step 3, when fixed frame moves at the sub-wire device other side, so that rotary shaft is stopped operating, funnel stop discharging,
Terminate powdering movement；
Mass of fibers is divided into multi beam by step 4, and is placed in different sub-wire grooves, and the first briquetting is pressed in fiber
Surface is powered to the first briquetting, and fiber is because with like charges and then completion side sub-wire；
Second briquetting is pressed on the side fiber that sub-wire is completed by step 5, and the first briquetting is powered off and lifted, the
Two briquettings are powered；Then the first briquetting is put down, one layer of fiber sub-wire, that is, sub-wire is completed in the power-off of the second briquetting；
Step 6 carries out precompressed to the continuous fiber of powder and completion electrostatic sub-wire in molding die, will exceed simultaneously
The continuous fiber of forming die portions is cut off, that is, completes the preparation of one layer of fibre reinforced composites；
The requirement of step 7, basis to fiber volume fraction, repeats step 4- step 6, until reaching the sub-wire effect of setting
Fruit so far obtains one layer of composite material；
Step 8 moves down punch-pin, and the upper surface and molding die upper surface for making the composite material being laid on punch-pin are at a distance of one
The thickness of layer composite material；
Step 9 repeats step 3 to 8, until reaching the required composite material number of plies and Fiber In Composite Material volume content.
Further, to the supply voltage being powered in the power supply and step 5 of the energization of the second briquetting to the first briquetting in step 5
It is equal.
Compared with prior art, the present invention at least has technical effect beneficial below, and electrostatic sub-wire method quickly prepares more
In the device of scale fibre reinforced composites, powdering funnel can be used and prepare chopped strand composite material, using powdering funnel
Continuous fiber composite material is prepared with electrostatic filament dividing device, can be realized the composite material for preparing multiple dimensioned fiber
To prepare continuous fiber and chopped firbre reinforced composite, while achievable chopped strand and continuous fiber simultaneously, prepared
Cheng Lianxu；The sub-wire process of single fiber can be rapidly completed using electrostatic sub-wire method；Prepare this mistake of fibre reinforced composites
Cheng Gaoxiao.The performance characteristics of continuous fiber and chopped firbre reinforced composite can be combined.
Further, the diameter for the through-hole across rotary shaft that hopper side walls open up is less than the outer diameter of gear, prevents
Composite material powder flows out gear from gear gap when rotated.
It is proposed by the present invention a kind of using electrostatic sub-wire method, when preparing continuous fiber reinforced composite materials, by pressure
The number of size of current and electrostatic sub-wire that block applies realizes volume content and fleece-laying of the continuous fiber in basis material
The control of angle, effect of fibrous orientation angles are realized by control size of current, so that the electrically charged quantity of single fiber institute is different, thus
Reach fiber subtended angle, i.e. the distance between fiber and fiber, can be completed without other processing to continuous fiber in composite material
Controllable arrangement, to reach to the controllable and composite property controllable of the volume content of Fiber In Composite Material；?
When preparing chopped firbre reinforced composite, by the way that the rotation speed of gear and the rotation speed of lead screw is arranged, to reach
The preparation requirement of chopped firbre reinforced composite.
Further, in step 6, to the supply voltage of the first briquetting energization in the power supply and step to the energization of the second briquetting
It is equal.Identical voltage keeps the sub-wire effect of the two sides of mass of fibers identical.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2 is apparatus of the present invention main view；
Fig. 3 is the explosive view of power spreading device；
Fig. 4 is the explosive view of sub-wire device；
Fig. 5 is the structural schematic diagram of molding machine；
Fig. 6 is the process that an electrostatic sub-wire method prepares continuous fiber；
Fig. 7 is the process that secondary electrostatic sub-wire method prepares continuous fiber；
In attached drawing: 1, bottom plate, 2, workbench, 3, sub-wire platform, 4, briquetting I, 5, briquetting II, 6, pin, 7, molding die, 8, convex
Mould, 9, lifting platform, 10, fixing piece, 11, gear, 12, fixing piece, 131, first support, 132, second support, 14, fixed frame,
15, shaft coupling, 16, rotary shaft, 17, motor, 18, funnel, 19, lead screw, 20, nut, 21, bolt, 22, groove, 31, sub-wire platform
Through-hole, 32, powdering groove, 33, sub-wire groove, 23, connector, 100, power spreading device, 200, sub-wire device, 300, molding dress
It sets, the 91, first support plate, the 92, second support plate, 93, third support plate, 94, guide rail, 95, sliding block.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance or the quantity for implicitly indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be bright
Show or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple " contain
Justice is two or more.In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, art
Language " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or
It is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition
The concrete meaning of above-mentioned term in the present invention.
Referring to Figures 1 and 2, a kind of device that electrostatic sub-wire method prepares multiple dimensioned fibre reinforced composites include rack,
It is used to prepare the power spreading device 100 of short fiber reinforced composite, the downside of power spreading device 100, which is provided with, is used to prepare controllable row
The electrostatic filament dividing device 200 of cloth continuous fiber, electrostatic filament dividing device downside are provided with for entire fibre reinforced composites
Molding machine 300.
Referring to Fig. 2, rack includes bottom plate 1, and first support 131 and second support 132, bottom plate 1 are vertically installed on bottom plate 1
The junction of two brackets is provided with fixing piece 10, fixing piece 10, by bolt 20 and nut 21 simultaneously with bottom plate 1 and two
Bracket is fixedly connected, i.e., bottom plate 1 is fixedly connected with bracket by fixing piece 10.Water between first support 131 and second support 132
It is flat to be provided with lead screw 19, and 19 one end of lead screw is fixedly connected with the fixing piece 12 of first support 131, nut 20 and bolt 21, Gu
Determining part 12 is T shape fixing piece, and the other end of lead screw 19 is coaxially connected by shaft coupling 15 and the output shaft of motor 17, on lead screw 19
It is threadedly coupled fixed frame 14, after starting motor 17, motor 17 and shaft coupling 15 drive lead screw 19 to rotate, and the rotation of lead screw 19 drives solid
Determine frame 14 to move horizontally, motor 17 is fixed in second support 132；Fluted 22 are opened up on bottom plate 1, are fixed with work in groove 22
Make platform 2, lifting platform 9 is fixed on the bottom of workbench 2；
Referring to Fig. 3, power spreading device 100 includes fixed frame 14, gear 11, rotary shaft 16 and funnel 18,18 two side ends of funnel
It is provided with cross through hole, with gear 11, the coaxial assembly of rotary shaft 16, the inner wall phase in gear 11 outside and two inclined-planes of funnel 18
It cuts, 16 outside of rotary shaft and 11 fit inside of gear；14 bottom of fixed frame is fixed there are two connector 23, on each connector 23
It is uniformly distributed there are two cylindrical hole, 18 both ends of funnel are opened up altogether there are four cylindrical hole, cylindrical hole and leakage on connector 23
Four cylindrical holes on bucket 18 coaxially assemble, and are fixedly connected using nut 20 with bolt 21 between connector 23 and funnel 18；
Gear 11 is mounted on the big end of funnel 18, and the cylindrical hole of 18 two side portions of funnel and gear 11 are coaxial, rotary shaft 16 and tooth
The coaxially assembly of wheel 11, and be engaged at the step in rotary shaft 16 at the step of the groove part of 11 inner wall of gear；Work
2 upper surface of platform offers workbench through-hole, and sub-wire platform 3, and workbench through-hole and sub-wire platform through-hole are fixedly installed on workbench 2
31 coaxial arrangements；
Referring to Fig. 4, electrostatic filament dividing device 200 includes sub-wire platform 3,4 sub-wire of the first briquetting and the second briquetting 5, in sub-wire platform 3
Portion offers sub-wire platform through-hole 31, and powdering groove 32 and sub-wire groove 33 are offered at 3 upper surface of sub-wire platform, and powdering groove 32 is
Cross, sub-wire groove 33 are bar shaped, and the bottom surface of powdering groove 32 and sub-wire groove 33 flushes.Pass through two in powdering groove 32
Pin 6 is hinged with the first briquetting 4 and the second briquetting 5.First briquetting 4 and there is the second briquetting 5 to be oppositely arranged on 31 liang of sub-wire platform through-hole
Side.Workbench through-hole diameter sub-wire platform through-hole 31 and identical.First briquetting, 4 sub-wire and the second briquetting 5 are made of an electrically conducting material, the
One briquetting, 4 sub-wire and the second briquetting 5 and power electric connection.
Referring to Fig. 5, molding machine 300 includes molding die 7, punch-pin 8 and lifting platform 9, is arranged from bottom to top on lifting platform 9
There are the first support plate 91, the second support plate 92 and third support plate 93, be fixed with guide rail 94 in the first support plate 93, on guide rail 94
End is fixed with third support plate 93, is equipped with sliding block 95 on guide rail 94, sliding block 95 can along the axial straight reciprocating motion of guide rail 94,
Second support plate 92 is fixed on sliding block 95, and sliding block 95 is driven by linear motor.Shaping mould is provided in third support plate 93
Have 7, punch-pin 8, the cylindrical sub-wire platform through-hole with sub-wire platform 3 of molding die 7, punch-pin 8 are provided in the second support plate 91
31 are in same axis, and when sliding block 95 drives punch-pin 8 to rise, 8 outer surface of punch-pin is contacted with 7 inner surface of molding die matches
It closes.8 upper surface of punch-pin is located in sub-wire platform through-hole 31.
Wherein, the diameter range of sub-wire groove 33 is determined by the diameter and individual fiber diameter of fibre bundle, herein
Diameter range is 1mm -3mm.The spacing range of sub-wire groove 33 by voltage swing, every bundle fiber silk when electrostatic sub-wire diameter
Size and the last desired sub-wire effect reached are determined that spacing optimized scope here is 7-10mm.
Preferably, 18 two sides through-hole diameter of funnel is less than the outside diameter of gear, prevents the composite material powder when rotated of gear 11
It is flowed out from 11 gap of gear.The diameter of sub-wire platform through-hole 31, the cylindrical hole diameter of workbench and molding die internal diameter phase
Together；Above-mentioned all bolts, nut structure are identical.When connecting bracket and bottom plate 1, contacted at stud base and rack groove.
A kind of method that electrostatic sub-wire method prepares continuous fiber reinforced composite materials, comprising the following steps:
Step 1 installs above-mentioned apparatus；
Step 2, starter make punch-pin 8 be moved to 8 upper surface of punch-pin and 7 upper surface phase of molding die using lifting platform 9
Away from stop motion after at one layer of thickness of composite material；
Step 3, starting motor 17, shaft coupling 15 and lead screw 19 start to rotate, drive fixed frame 14 to move horizontally, work as fixation
When frame 14 moves to powdering 32 side of groove, band moving gear 11 is rotated by the motor driven rotary shaft 16 of peripheral hardware, drives leakage
The powder of composite material in bucket 18 starts to leak out, that is, starts powdering movement；According to the rotation speed of rotary shaft 16, can control
The discharge of fibre reinforced composites mixed powder, and prepare the thickness of single layer short fiber reinforced composite；
Step 4, at the other side that fixed frame 14 moves to powdering groove 32 when, so that rotary shaft 16 is stopped operating, funnel
18 stop discharging, that is, terminate powdering movement；
A branch of reinforced phase fiber to be added is divided into three beams and is placed in parallel the three of 3 upper surface of sub-wire platform by step 5
In a sub-wire groove 33, the first briquetting 4 is pressed in filament surface, according to one layer of fiber count requirement, electricity is set to the first briquetting 4
Compressive Strength is simultaneously powered, and for fiber filament because completing side sub-wire in turn with like charges, i.e. sub-wire effect is as shown in Figure 6；
Step 6 puts down the second briquetting 5, is pressed on the fiber filament for having divided side, and the first briquetting 4 is powered off and lifted, if
It sets identical voltage and is powered to the second briquetting 5；Then the first briquetting 4 is put down, it is fine to complete one-time continuous for the power-off of the second briquetting 5
Tie up sub-wire；
Step 7, the continuous fiber to the mixed-powder in molding die 7 and after the completion of electrostatic sub-wire carry out precompressed, together
When will exceed molding die 7 size part continuous fiber cutting, that is, complete one layer of fibre reinforced composites system
It is standby.
The requirement of step 8, basis to fiber volume fraction, repeats step 5-7, until reaching preset sub-wire effect, imitates
Fruit is as shown in fig. 7, obtain one layer of composite material；
Step 9 moves down punch-pin 8, makes the upper surface for the composite material being laid on punch-pin 8 and 7 upper surface phase of molding die
Away from stop motion after at one layer of thickness of composite material；
Step 10 repeats step 3 to 8, until reach the required composite material number of plies and Fiber In Composite Material volume content,
Complete the preparation to fibre reinforced composites.
In step 5, apply size of current according to briquetting, be same charge on each fiber band, is i.e. electric current is bigger, fine
Charge is more in dimension, and the repulsive force between fiber and fiber is bigger, and the fibre number for falling on circular hole on powdering groove 32 is also got over
It is few, to control the content of continuous fiber in composite material, i.e., by control size of current, to reach different sub-wire effects
Fruit.
In step 3, when the material placed in funnel is the mixture of chopped strand and powder, the fiber reinforcement of preparation
Composite material is the fibre reinforced composites of one layer of chopped strand, one layer of continuous fiber.
When preparing chopped firbre reinforced composite, comprising the following steps:
Step 1-4 is identical with a kind of method that electrostatic sub-wire method prepares continuous fiber reinforced composite materials, repeats no more；Step
In rapid 3, the material placed in funnel is the mixture of chopped strand and powder；
Step 5 carries out precompressed to the mixture of chopped strand and powder, then moves down punch-pin 8, makes to be laid on punch-pin 8
Composite material upper surface and 7 upper surface of molding die at one layer of thickness of composite material after stop motion；
Step 3- step 5 is repeated, until reach the required composite material number of plies and Fiber In Composite Material volume content, i.e., it is complete
The preparation of pairs of fibre reinforced composites.
The present invention can not only efficiently, rapidly prepare continuous fiber reinforced composite materials and short fiber reinforced composite,
Realize the purpose for preparing multiple dimensioned fibre reinforced composites；Used electrostatic sub-wire method is compound in preparation continuous fiber reinforcement
In materials process, the clouding and doubling phenomena of fibre bundle can be effectively eliminated and reduced by control size of current, efficiently
The volume content for adjusting Fiber In Composite Material is realized to the controllability for preparing fibre reinforced composites mechanical property, tool
There is practical, easy to operate feature.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (9)
1. the device that a kind of electrostatic sub-wire method prepares multiple dimensioned fibre reinforced composites, which is characterized in that described including rack
It is equipped with from bottom to top in rack for carrying out molding molding machine (300) to fibre reinforced composites, for fiber
It carries out the electrostatic filament dividing device (200) of sub-wire and is used for molding machine (300) middle berth powder body power spreading device (100)；It is described
Electric sub-wire device (200) includes sub-wire platform (3), the first briquetting (4) sub-wire and the second briquetting (5), and sub-wire platform (3) top offers
Powdering groove (32), sub-wire platform through-hole (31) is offered in powdering groove (32), and the sub-wire platform through-hole (31) and workbench are logical
Hole coaxial arrangement, powdering groove (32) two sides are relatively set with two groups of sub-wire grooves, and two groups of sub-wire grooves are oppositely arranged on
Sub-wire platform through-hole (31) two sides, every group of sub-wire groove include several sub-wire grooves (33) being parallel to each other, powdering groove (32) bottom
Face is hinged with the first briquetting (4) and has the second briquetting (5)；The molding machine (300) includes the molding die (7) of coaxial arrangement
With punch-pin (8), punch-pin (8) setting is in molding die (7).
2. a kind of electrostatic sub-wire method according to claim 1 prepares the device of multiple dimensioned fibre reinforced composites, special
Sign is that the rack includes lead screw (19), and the power spreading device (100) includes funnel (18), gear (11) and rotary shaft
(16), it is threaded with fixed frame (14) on the lead screw (19), fixed frame (14) can move horizontally on lead screw (19), institute
It states funnel (18) and is fixed on fixed frame (14) lower end, the gear (11) is arranged in funnel (18), on the outside of gear (11) and leaks
The inner wall on two inclined-planes of bucket (18) is tangent, and the gear (11) and rotary shaft (16) are connected by key, the rotary shaft (16)
One end is stretched out funnel (18) and is connected outside with power device.
3. a kind of electrostatic sub-wire method according to claim 2 prepares the device of multiple dimensioned fibre reinforced composites, special
Sign is that funnel (18) side wall is offered for the mounting hole across rotary shaft (16), and the diameter of the mounting hole is less than
The outer diameter of gear (11).
4. a kind of electrostatic sub-wire method according to claim 1 prepares the device of multiple dimensioned fibre reinforced composites, special
Sign is that the molding die (7) and punch-pin (8) are installed on lifting platform (9), sets from bottom to top on the lifting platform (9)
It is equipped with the first support plate (91), the second support plate (92) and third support plate (93), the first support plate is fixed with guide rail on (91)
(94), guide rail (94) upper end is fixed with third support plate (93), is equipped on guide rail (94) sliding block (95), sliding block (95) energy
Enough along the axial straight reciprocating motion of guide rail (94), the second support plate (92) is fixed on sliding block (95), and sliding block (95) passes through straight line
Motor driven；It is provided with molding die (7), is provided in the second support plate (92) punch-pin (8) in third support plate (93), formed
Sub-wire platform through-hole (31) coaxial arrangement with sub-wire platform (3) of mold (7), punch-pin (8), and when sliding block (95) drive punch-pin (8)
When rising, punch-pin (8) outer surface is engaged with molding die (7) inner surface.
5. a kind of electrostatic sub-wire method according to claim 1 prepares the device of multiple dimensioned fibre reinforced composites, special
Sign is, is equipped with workbench (2) on the bottom plate (1) of the rack, and workbench (2) roof offers workbench through-hole,
Electrostatic filament dividing device (200) is fixed on the roof of workbench (2).
6. a kind of electrostatic sub-wire method according to claim 2 prepares the device of multiple dimensioned fibre reinforced composites, special
Sign is that the diameter of the sub-wire groove (33) is 1mm~3mm.
7. a kind of electrostatic sub-wire method according to claim 1 prepares the device of multiple dimensioned fibre reinforced composites, special
Sign is that the spacing of the sub-wire groove (33) is 7mm~10mm.
8. a kind of method that electrostatic sub-wire method prepares fibre reinforced composites, this method is based on device described in claim 1,
Characterized by comprising the following steps:
The thickness of step 1, the upper surface for making punch-pin (8) and molding die (7) upper surface at a distance of one layer of composite material；
Step 2 moves horizontally fixed frame (14), when fixed frame (14) moves to sub-wire device (200) side, makes rotary shaft
(16) start band moving gear (11) to rotate, the powder in funnel (18) is driven to start to leak out, and spread and spill to the upper table of punch-pin (8)
Face starts powdering movement；
Step 3, when fixed frame (14) moves at sub-wire device (200) other side, so that rotary shaft (16) is stopped operating, funnel
(18) stop discharging, terminate powdering movement；
Mass of fibers is divided into multi beam by step 4, and is placed in different sub-wire grooves (33), and the first briquetting (4) is pressed in fibre
Dimension table face is powered to the first briquetting (4), and fiber is because with like charges and then completion side sub-wire；
Second briquetting (5) is pressed on the side fiber that sub-wire is completed by step 5, and the first briquetting (4) are powered off and lifted,
Second briquetting (5) is powered；Then the first briquetting (4) is put down, the second briquetting (5) power-off, that is, completes one layer of fiber sub-wire and divides
Silk；
Step 6 carries out precompressed to the continuous fiber of powder and completion electrostatic sub-wire in molding die (7), will exceed simultaneously
The continuous fiber of molding die (7) part is cut off, that is, completes the preparation of one layer of fibre reinforced composites；
The requirement of step 7, basis to fiber volume fraction, repeats step 4- step 6, until reach the sub-wire effect of setting, until
This, obtains one layer of composite material；
Step 8 moves down punch-pin (8), makes the upper surface and molding die (7) upper surface of the composite material being laid on punch-pin (8)
At a distance of the thickness of one layer of composite material；
Step 9 repeats step 3 to step 8, until reaching the required composite material number of plies and Fiber In Composite Material volume content.
9. the method that a kind of electrostatic sub-wire method according to claim 8 prepares fibre reinforced composites, which is characterized in that
It is equal to the supply voltage in the power supply and step 5 of the second briquetting (5) energization to the first briquetting (4) energization in step 5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277338A (en) * | 2020-09-30 | 2021-01-29 | 陕西科技大学 | Device and method for efficiently reinforcing composite material by continuous fibers at any angle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277338A (en) * | 2020-09-30 | 2021-01-29 | 陕西科技大学 | Device and method for efficiently reinforcing composite material by continuous fibers at any angle |
| CN112277338B (en) * | 2020-09-30 | 2022-04-26 | 陕西科技大学 | Device and method for efficiently reinforcing composite material by continuous fibers at any angle |
| US11529772B2 (en) | 2020-09-30 | 2022-12-20 | Shaanxi University Of Science & Technology | Apparatus and method for efficiently preparing multi-directional continuous fiber-reinforced composite material |
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