CN106915005B - A kind of melt impregnation device reducing rate of fiber breakage - Google Patents
A kind of melt impregnation device reducing rate of fiber breakage Download PDFInfo
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- CN106915005B CN106915005B CN201710308321.1A CN201710308321A CN106915005B CN 106915005 B CN106915005 B CN 106915005B CN 201710308321 A CN201710308321 A CN 201710308321A CN 106915005 B CN106915005 B CN 106915005B
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- cope plate
- lower template
- runner
- height
- curved channel
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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
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
- B29B15/125—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex by dipping
-
- 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
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses the melt impregnation devices for reducing rate of fiber breakage, including lower template, cope plate and the highly automated regulating device of runner；The space that the lower template and cope plate enclose constitutes curved channel and melts chamber；The height that the highly automated regulating device of runner is used to adjust the molten chamber of the curved channel eliminates the curved channel and melts intracavitary shearing field to adapt to different fiber movement speed and melt flow rate.The present invention can melt the height that the parameters adjust automatically curved channels such as the width of chamber melt chamber according to yield, material strip hauling speed and curved channel, it can effectively reduce fracture rate of the fiber in immersion system in the case where guaranteeing not flash, greatly improve the productivity and the quality of production of prepreg；The height that reasonable curved channel melts chamber can be rapidly and accurately adjusted out according to different production requirements, the exchange repeatedly of avoiding device improves production efficiency.
Description
Technical field
The present invention relates to a kind of melt impregnation devices for reducing rate of fiber breakage.
Background technique
In long fibre and continuous fiber reinforced composites melt impregnation technology, in order to realize good fiber
Dispersion and dipping, dipping former are intracavitary using similar sinusoidal bending dipping runner, the dipping runner, improved curved of undaform
Meander road dipping former head etc..All there is certain storage compartment in immersion system used, and continue supply supplement by extruder
Resin melt.When drawing fiber by immersion system, all polymer melts of fiber surrounding are surrounded.In actual production
In, since the hauling speed of fiber is very fast, that there are certain speeds is poor for the flowing velocity of the movement velocity of fiber and melt.Contact is fine
The speed of the melt portion of dimension is maximum, and the speed of the melt portion far from fiber is minimum, and there are higher speed ladders inside melt
Degree, to form shearing field, as shown in Figure 1, the stickiness effect that this shearing field generates will cause fibre bundle from outside to inside, from office
Portion's small range causes production to occur unstable to the fracture process of large area, especially high-speed production when, or even will appear fiber
Complete rupture and the case where shut down.
In addition, extruder revolving speed is fitted sometimes in order to reduce the influence in shearing field and realize that fibre bundle preferably impregnates
Work as raising, but excessively high extruder extruded velocity will cause the excessive flash of immersion system, not only will affect fibre bundle and enter in device
Broadening at mouthful, also influences the quality in device exit prepreg.
Summary of the invention
Present invention aim to address since curved channel melts intracavitary there are shearing field, cause fibre bundle easily disconnected at present
The technical issues of splitting, seriously affecting fibre reinforced composites production efficiency and product properties.
To realize above goal of the invention, the present invention provides a kind of melt impregnation device for reducing rate of fiber breakage, including under
Template, cope plate and the highly automated regulating device of runner；
The space that the lower template and cope plate enclose constitutes curved channel and melts chamber；
The highly automated regulating device of runner is used to adjust the height that the curved channel melts chamber, to adapt to different fibres
Movement velocity and melt flow rate are tieed up, the curved channel is eliminated and melts intracavitary shearing field.
The highly automated regulating device of the runner can control the upper and lower displacement of cope plate, thus to cope plate and lower template it
Between gap value Δ H controlled, Δ H meets following expression:
Wherein, Δ H is the gap value needed between the cope plate adjusted and lower template, mm；H is cope plate bottom surface initial bit
Set height, mm；Q is production line total output, kg/h；F is the fiber quality content of prepreg；ρ is that fusant density is, g/cm3；U
For material strip hauling speed, m/min；W is the width that curved channel melts chamber, mm.
Preferably, the highly automated regulating device of the runner includes: the multiple brackets for being erected in each angle of the lower template；
It is divided into multiple motors of the multiple cradle top；The multiple lead screws being connect with each motor；On each lead screw respectively
It is provided with ball slider and electric machine controller；The control signal output of the electric machine controller is respectively connected to the motor
Control signal input；The electric machine controller can control each motor rotation, to drive each screw synchronous rotation
Turn, and then make each ball slider is synchronous to carry out vertical movement up and down to adjust the height of the cope plate, makes the bending
The height that runner melts chamber changes.
Preferably, scale is indicated on the bracket, the range of the scale is 0-50mm, the lower template top side location pair
Answer zero graduation graticule.
Preferably, the W is determined by following formula:
0.9C×m≤W≤1.1C×m；
Wherein, C is single fiber-bundles spreading width, mm；M is the continuous radical for squeezing out material strip.
Preferably, the bending radius that the curved channel melts runner in chamber is 10-80mm, and every section of arc of curvature corresponding angle is
30-120 °, setting arc of curvature 3-10 in runner.
According to another aspect of the present invention, the highly automated regulating device of the runner is each including being erected in the lower template
Multiple brackets at angle, the multiple motors for being divided into the cradle top, the multiple worm screws being connect with each motor, each snail
The rack slide and electric machine controller being screwed on bar, the control signal output of the electric machine controller are respectively connected to each described
The control signal input of motor, each rack slide are individually fixed in each angle of the cope plate；The electric machine controller
Each motor rotation is controlled, to drive each worm screw synchronous rotary, and then each rack slide is synchronized and carries out
Lower to move vertically to adjust the height of the cope plate, the height for making the curved channel melt chamber changes.
According to a further aspect of the invention, the highly automated regulating device of the runner is each including being erected in the lower template
Multiple brackets at angle, the multiple hydraulic pumps for being divided into the cradle top pass through solenoid directional control valve and section with each hydraulic pump
Multiple elongated cylindrical hydraulic cylinders of valve connection, hydraulic cylinder piston and controller in each elongated cylindrical hydraulic cylinder are flowed, it is described
The control signal output of controller is respectively connected to the control signal input of multiple solenoid directional control valves, each described hydraulic
The cylinder piston is individually fixed in each angle of the cope plate；Each solenoid directional control valve conducting of controller control, to make each
The hydraulic pump respectively drives the flowing of the fluid in each elongated cylindrical hydraulic cylinder, and then drives each hydraulic cylinder piston same
Step carries out vertical movement up and down to adjust the height of the cope plate, and the height for making the curved channel melt chamber changes.
Compared with prior art, the beneficial effects of the present invention are:
The present invention can melt the parameters adjust automatically bending stream such as width of chamber according to yield, material strip hauling speed and curved channel
Road melts the height of chamber, and the movement rate of fiber and the flow rate of melt are synchronous, that is, speed difference is not present, to eliminate fiber institute
The shearing field received can effectively reduce fracture rate of the fiber in immersion system in the case where guaranteeing not flash, greatly improve multiple
The production efficiency and product quality of condensation material；Reasonable curved channel can be rapidly and accurately adjusted out according to different production requirements
The height of molten chamber, the exchange repeatedly of avoiding device improve production efficiency.
Detailed description of the invention
Fig. 1 is shearing field schematic diagram in melt impregnation device of the invention；
Fig. 2 is the overall structure diagram of melt impregnation device of the invention；
Fig. 3 is the lower template structural schematic diagram of melt impregnation device of the invention；
Fig. 4 is melt impregnation device internal cavity runner parameter schematic diagram；
Fig. 5 is melt impregnation relevant parameter schematic diagram.
In figure, lower template 1；Cope plate 2；Bracket 3；Motor 4；Electric machine controller 5；Ball slider 6；Lead screw 7.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in Figures 2 and 3, the melt impregnation device of reduction rate of fiber breakage of the invention, including lower template 1, cope plate
2, bracket 3, motor 4, electric machine controller 5, ball slider 6 and lead screw 7 wherein indicate scale, 1 top surface of lower template position on bracket 3
Set corresponding zero graduation, meter full scale 0-50mm.Bracket 3, motor 4, electric machine controller 5, ball slider 6 and lead screw 7 constitute dress
Set highly automated regulating device.The highly automated regulating device of runner is used to adjust the height that the curved channel melts chamber, with
Different fiber movement speed and melt flow rate are adapted to, the curved channel is eliminated and melts intracavitary shearing field.
Lower template 1 and the cooperation of cope plate 2 constitute curved channel and melt chamber, and curved channel melts chamber parameter as schemed inside immersion system
Shown in 4, it is all H that the molten chamber height value of curved channel is equal with device outer gap value inside device.Runner bending radius is 10-
80mm, every section of bending arc length corresponding angle are between 30-120 °, and setting bending arc length number is 3-10 in runner.
In one embodiment of the invention, the highly automated regulating device of the runner includes being erected in the lower template 1
The output shaft of the bracket 3 of quadrangle, four motors 4 for being divided into 3 top of bracket and each motor 4 passes through shaft coupling and connects
The ball slider 6 and electric machine controller 5 being screwed on four lead screws 7 connecing, each lead screw 7.The control of the electric machine controller 5
Signal output end is respectively connected to the control signal input of four motors 4, and each ball slider 6 is individually fixed in institute
State the quadrangle of cope plate 2.The electric machine controller 5 controls each motor 4 and rotates, to drive the synchronous rotation of each lead screw 7
Turn, and then make each ball slider 6 is synchronous to carry out vertical movement up and down to adjust the height of the cope plate 2, makes described curved
The height that meander road melts chamber changes.
The control signal of electric machine controller output is displacement signal Δ H, specifically, electric machine controller 5 it is built-in about
The following algorithm of displacement signal Δ H: expression formula is as follows:
Wherein, the gap value that Δ H needs to adjust between cope plate 2 and lower template 1, mm；H is that 2 bottom surface of cope plate is initial
The initial scale value of bracket 3 corresponding to position, mm；Production line total output Q (kg/h) is determined according to equipment capacity；Preimpregnation
The fiber quality content F of material determines that value can between 10%-70% according to prepreg tape average fiber mass content produced
It adjusts；Fusant density is ρ (g/cm3), according to resin parameter determine, resin include but is not limited to polyolefin, nylon, polyester,
The thermoplasticity such as POE, PEEK and thermosetting plastics raw material；Material strip hauling speed U (m/min) is big by dragger setting hauling speed
Small, value is adjustable between 1m/min-100m/min；W (mm) is that curved channel melts chamber width.
Referring to Fig. 5, the W is determined by following formula:
0.9C×m≤W≤1.1C×m； (2)
Wherein, C is single fiber-bundles spreading width, mm；M is the continuous radical for squeezing out material strip.
Above-mentioned parameter value is inputted electric machine controller 5 by input panel and run by operator, and electric machine controller 5 is foundation
The operation result control motor 4 of formula (1) rotates respective angles, and driving cope plate 2 vertically moves Δ H distance, and Δ H is timing, electricity
Machine 5 is driven forward cope plate 2 and raises respective distance, and when Δ H is negative, motor 5 is driven reverse cope plate 2 and declines respective distance.
When the present apparatus works, it is first determined known related property parameter and technological parameter in production, including continuously impregnate
Production line total output Q (kg/h)；The glass mass content F of particulate material；Fusant density ρ (g/cm3)；Material strip hauling speed U (m/
min)；Curved channel melts chamber width W (mm).
Curved channel inside immersion system is calculated according to the relationship that device is met and melts chamber width W, later by each parameter
Value input electric machine controller 5, electric machine controller 5 control motor 5 according to above-mentioned built-in algorithm and drive ball-screw adjutant cope plate 2
Adjust suitable height.
As a kind of transformation, the ball screw assembly, in embodiment illustrated in fig. 2 can be substituted by worm couple, that is, lead screw 7
Can be replaced worm screw, ball module 6 can be replaced the rack slide of similar worm gear, curved channel melt the adjustment process of chamber height with
Embodiment shown in Fig. 2 is identical.
It is converted as another kind, motor 4, electric machine controller 5 and the ball screw assembly, in embodiment illustrated in fig. 2 can be by hydraulic
System substitutes, that is, motor 4 can be replaced hydraulic pump, electric machine controller 5 can be replaced controller, and ball screw assembly, is replaceable
For the combination of elongated cylindrical hydraulic cylinder and cylinder inner piston, four hydraulic pumps are set to 3 top of bracket, and each hydraulic pump passes through electromagnetism respectively
Reversal valve and throttle valve are connected to four elongated cylindrical hydraulic cylinders, and hydraulic cylinder piston, control are equipped in each elongated cylindrical hydraulic cylinder
The control signal output of device is respectively connected to the control signal input of four solenoid directional control valves, and each hydraulic cylinder piston is solid respectively
Due to the quadrangle of cope plate 2；Controller controls each solenoid directional control valve conducting, so that it is hydraulic so that each hydraulic pump is distinguished each elongated cylindrical
Fluid flowing in cylinder, and then drive each hydraulic cylinder piston is synchronous to carry out vertical movement up and down to adjust the height of cope plate 2, make
The height that the curved channel melts chamber changes.
The example 1 of fiber glass reinforced polypropylene production is carried out using the present invention:
In fiber glass reinforced polypropylene production, it is desirable that production line total output Q is 500kg/h；Material strip hauling speed U is 50m/
min；Prepreg tape glass fiber content F requires 45% or so；It is 60mm that curved channel, which melts chamber width W, inside equipment therefor.On existing
2 bottom surface initial position of template be 0.5mm when, after inputting corresponding parameter, electric machine controller 5 according to the operation result of formula (2) be+
1.2, the highly automated regulating device driving cope plate 2 of runner raises 1.2mm.Experiment measures prepreg fiber content 44.87%, fine
Tie up fracture rate 0.83%, unidirectional prepreg tape molding gained sample interlaminar shear strength 32.56MP, bending strength 362.13MP.
The example 2 of glass fiber enhanced nylon 66 production is carried out using the present invention:
In glass fiber enhanced nylon 66 production, it is desirable that continuous impregnating prodn. line total output is 450kg/h；Material strip hauling speed
U is 30m/min；The glass fiber content F of particulate material requires 50% or so；Nylon66 fiber fusant density ρ is 1.15g/cm3；Equipment therefor
It is 80mm that internal curved channel, which melts chamber width W,.When existing 2 bottom surface initial position of cope plate is 3mm, after inputting corresponding parameter,
Electric machine controller 5 is -1.7 according to the operation result of formula (2), and the highly automated regulating device driving cope plate 2 of runner reduces
1.7mm.Experiment measures prepreg fiber content 50.27%, rate of fiber breakage 1.02%, sample bent after preimpregnation pelletizing injection molding
Intensity is 345.47MPa, notch impact strength 302.64J/m.
Comparative example 1:
Other conditions are with example 1, the difference is that 2 basal surface position of cope plate keeps initial value 0.5mm, do not use runner
Highly automated regulating device is adjusted.It tests and measures prepreg fiber content 48.96%, rate of fiber breakage 4.69%, unidirectionally
Prepreg tape molding gained sample interlaminar shear strength 29.03MP, bending strength 359.93MP.
Comparative example 2:
Other conditions are with example 2, the difference is that 2 basal surface position of cope plate keeps initial value 3mm, it is not high using runner
Degree self-checking device is adjusted.Experiment measures prepreg fiber content 48.73%, rate of fiber breakage 5.37%.Presoak item
Sample bent intensity is 339.21MPa, notch impact strength 289.45J/m after pelletizing injection molding.
It can be seen that using two production instances of the invention relative to two comparative examples using conventional apparatus, production
The rate of fiber breakage of material out substantially reduces.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (9)
1. a kind of melt impregnation device for reducing rate of fiber breakage, including lower template, cope plate, the lower template and cope plate enclose
The space of synthesis constitutes curved channel and melts chamber, it is characterised in that: the melt impregnation device includes the highly automated adjusting dress of runner
It sets, the highly automated regulating device of runner includes controller, and the controller is built-in with the algorithm about displacement signal, can
The upper and lower displacement for controlling cope plate, to control the gap value Δ H between cope plate and lower template, the table of the algorithm
Up to formula are as follows:
Wherein, Δ H is the gap value needed between the cope plate adjusted and lower template, mm；H is that cope plate bottom surface initial position is high
Degree, mm；Q is production line total output, kg/h；F is the fiber quality content of prepreg；ρ is that fusant density is, g/cm3；U is material
Hauling speed, m/min；W is the width that curved channel melts chamber, mm.
2. the melt impregnation device according to claim 1 for reducing rate of fiber breakage, which is characterized in that the controller is
Electric machine controller, the highly automated regulating device of runner include: the multiple brackets for being erected in each angle of the lower template；Set up separately
In multiple motors of the multiple cradle top；The multiple lead screws being connect with each motor；It is respectively set on each lead screw
There are ball slider and the electric machine controller；The control signal output of the electric machine controller is respectively connected to the motor
Control signal input；The electric machine controller can control each motor rotation, to drive each screw synchronous rotation
Turn, and then make each ball slider is synchronous to carry out vertical movement up and down to adjust the height of the cope plate, makes the bending
The height that runner melts chamber changes.
3. the melt impregnation device according to claim 2 for reducing rate of fiber breakage, which is characterized in that the bracket subscript
There is scale, the range of the scale is 0-50mm, and the lower template top side location corresponds to zero graduation graticule.
4. the melt impregnation device according to claim 1 for reducing rate of fiber breakage, which is characterized in that the W is by following formula
It determines:
0.9C×m≤W≤1.1C×m；
Wherein, C is single fiber-bundles spreading width, mm；M is the continuous radical for squeezing out material strip.
5. the melt impregnation device according to claim 1-4 for reducing rate of fiber breakage, which is characterized in that described
The bending radius that curved channel melts runner in chamber is 10-80mm, and every section of arc of curvature corresponding angle is 30-120 °, is arranged in runner
Arc of curvature 3-10.
6. the melt impregnation device according to claim 1 for reducing rate of fiber breakage, which is characterized in that the controller is
Electric machine controller, the highly automated regulating device of runner include the multiple brackets for being erected in each angle of the lower template, are divided into
Multiple motors of the cradle top, the multiple worm screws being connect with each motor, the rack slide being screwed on each worm screw
With the electric machine controller, the control signal output of the electric machine controller is respectively connected to the control signal of each motor
Input terminal, each rack slide are individually fixed in each angle of the cope plate；The electric machine controller controls each motor
Rotation to drive each worm screw synchronous rotary, and then makes each rack slide is synchronous to carry out vertical movement up and down to adjust
The height for saving the cope plate, the height for making the curved channel melt chamber change.
7. the melt impregnation device according to claim 6 for reducing rate of fiber breakage, which is characterized in that the bracket subscript
There is scale, the range of the scale is 0-50mm, and the lower template top side location corresponds to zero graduation graticule.
8. the melt impregnation device according to claim 1 for reducing rate of fiber breakage, which is characterized in that the runner height
Self-checking device includes the multiple brackets for being erected in each angle of the lower template, is divided into the multiple hydraulic of the cradle top
Pump, the multiple elongated cylindrical hydraulic cylinders being connect by solenoid directional control valve and throttle valve with each hydraulic pump, each long cylinder
Hydraulic cylinder piston and the controller in shape hydraulic cylinder, the control signal output of the controller are respectively connected to multiple institutes
The control signal input of solenoid directional control valve is stated, each hydraulic cylinder piston is individually fixed in each angle of the cope plate；It is described
Each solenoid directional control valve conducting of controller control, so that each hydraulic pump be made to respectively drive each elongated cylindrical hydraulic cylinder
Interior fluid flowing, and then drive each hydraulic cylinder piston is synchronous to carry out vertical movement up and down to adjust the height of the cope plate
Degree, the height for making the curved channel melt chamber change.
9. the melt impregnation device according to claim 8 for reducing rate of fiber breakage, which is characterized in that the bracket subscript
There is scale, the range of the scale is 0-50mm, and the lower template top side location corresponds to zero graduation graticule.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710308321.1A CN106915005B (en) | 2017-05-04 | 2017-05-04 | A kind of melt impregnation device reducing rate of fiber breakage |
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| CN201710308321.1A CN106915005B (en) | 2017-05-04 | 2017-05-04 | A kind of melt impregnation device reducing rate of fiber breakage |
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| CN106915005B true CN106915005B (en) | 2019-04-26 |
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Families Citing this family (2)
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| CN108943774A (en) * | 2018-06-25 | 2018-12-07 | 马鞍山久特新材料科技有限公司 | A kind of pultrusion equipment for macromolecule material product |
| CN109808197B (en) * | 2019-01-30 | 2023-06-27 | 江苏集萃先进高分子材料研究所有限公司 | Continuous fiber reinforced thermoplastic composite material forming device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016345A (en) * | 2005-07-07 | 2007-01-25 | Toshiba Mitsubishi-Electric Industrial System Corp | Resin impregnation apparatus |
| CN103770241A (en) * | 2014-01-25 | 2014-05-07 | 广州金发碳纤维新材料发展有限公司 | Double-faced melt impregnation method and device for continuous long fiber reinforced thermoplastic resin |
| CN205617079U (en) * | 2016-05-12 | 2016-10-05 | 江苏恒神股份有限公司 | Carbon fiber industrialization production drive -by -wire mucilage binding is put |
-
2017
- 2017-05-04 CN CN201710308321.1A patent/CN106915005B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016345A (en) * | 2005-07-07 | 2007-01-25 | Toshiba Mitsubishi-Electric Industrial System Corp | Resin impregnation apparatus |
| CN103770241A (en) * | 2014-01-25 | 2014-05-07 | 广州金发碳纤维新材料发展有限公司 | Double-faced melt impregnation method and device for continuous long fiber reinforced thermoplastic resin |
| CN205617079U (en) * | 2016-05-12 | 2016-10-05 | 江苏恒神股份有限公司 | Carbon fiber industrialization production drive -by -wire mucilage binding is put |
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