CN202279892U - Continuous fiber bundle dispersing device - Google Patents
Continuous fiber bundle dispersing device Download PDFInfo
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- CN202279892U CN202279892U CN2011204310691U CN201120431069U CN202279892U CN 202279892 U CN202279892 U CN 202279892U CN 2011204310691 U CN2011204310691 U CN 2011204310691U CN 201120431069 U CN201120431069 U CN 201120431069U CN 202279892 U CN202279892 U CN 202279892U
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Abstract
The utility model discloses a continuous fiber bundle dispersing device. A fiber bundle is unwound by an unwinding roller and is tensioned by a pneumatic expansion device, and then the fiber bundle is maintained in a dispersion state by means of a guide roller, and the fiber bundle is rolled by a winding roller at last. The pneumatic expansion device includes a triangular area, trapezoid areas, and blower fans; the triangular area is composed of an upper plate and a lower cover plate, stripe-shaped air inlets are arranged on the upper cover plate along the central line of a isosceles triangle, and the lower cover plate is a solid plate; the trapezoid areas are symmetrically distributed at the two sides of the triangular area, the bottom edges are respectively connected to the waist parts of the triangular area, and grate screens are arranged at the connection parts; the upper bottom edges of the trapezoid areas are connected to the blower fans, grid leaves are arranged at the connection parts of the blower fans and the trapezoid areas, and the two blower fans are exactly the same. The dispersing device provided can disperse the non-twisting continuous fiber bundle into continuous filaments to reduce the fracture rate of fibers.
Description
Technical field
The present invention relates to a kind of composite process equipment, especially a kind of device that can fully disperse continuous tow.
Background technology
At present, the dispersion of fibre bundle is mainly mechanical dispersion, also has some pneumatic dispersal devices both at home and abroad, like U.S. Pat 5057338.In U.S. Pat 5057338, its expansion equipment is because device is comparatively simple, in expansion process; Air is flowing in and forms turbulent flow in the whole die cavity; Fibre bundle is trembled in die cavity, because the filament diameter is less, the carbon fiber filament diameter is approximately 7 μ m; The glass fibre filament diameter is approximately 17 μ m, causes the filament surface abrasion easily and then destroys fracture.
Summary of the invention
Tremble and cause fracture, the deficiency high, the present invention that a kind of continuous tow dispersing device is provided in order to overcome the prior art fiber the fibre damage rate; Can non-twist continuous tow be dispersed into continuous filament or monofilament band and not cause the damage of monofilament; Can satisfy Metal Substrate, polymer matrix composites that the preparation carbon fibers/fiberglass strengthens, and the new preparation technology of C/C composite needs, apparatus structure is simple; Runnability is reliable, and is simple to operate, cost is low.
The technical solution adopted for the present invention to solve the technical problems is: comprise emptying roller, pneumatically spreading device, guide rollers and material receiving roller.Fibre bundle keeps dispersity through guide rollers, at last by the material receiving roller rolling by after putting down and be pulled through the pneumatically spreading device on the emptying roller.Said pneumatically spreading device comprises delta, step sector and blower fan.Delta is a cavity that the perspective plane is an isosceles triangle, is made up of upper cover plate and lower cover, and the chamber inner height is 1-5mm.The strip air inlet of arranging along the isosceles triangle center line is arranged on the upper cover plate, the wide 100 μ m of air inlet, long 1-3mm, adjacent two air inlets be spaced apart 1mm.Each air inlet of upper cover plate is symmetrically distributed along the center line of isosceles triangle, and corresponding base, the open area that forms of outermost two air inlets and the length ratio on triangle base be 40-60%, and lower cover is real plate.Step sector is two cavitys that the perspective plane is an isosceles trapezoid, and chamber inner height and delta are consistent.Two step sectors are symmetrically distributed in the delta both sides, and the base of two step sector isosceles trapezoids is connected with the waist of delta isosceles triangle respectively, is provided with the castor net in the junction.The place, base connects blower fan on step sector, and blower fan and step sector junction are provided with the grid leaf, and two blower fans are identical.
Described castor net is a metallic plate; Evenly be placed with the through hole of crosswise opening on it; The crosswise opening is intersected at its length center by two orthogonal limits and forms, and the width on each bar limit is 30-100 μ m, and length is 1-3mm; Adjacent two crosswise openings respectively have a limit on same straight line, and the spacing on these two limits is 1-3mm.
Described grid leaf is to enclose in rectangle a meter font grid blade is arranged in the frame, and the interior frame length that rectangle is enclosed frame is 10cm, and interior width of frame is trapezoidal inner chamber height, and the grid blade height is 20mm.
Corresponding drift angle place, described delta base is provided with a yarn inlet, and yarn inlet can be adjusted to cylindric or flat.
Described triangle waist length is 20-60cm, and step sector waist length is 60-100cm.
Described emptying roller and material receiving roller all are cylindrical roll shaft; Guide rollers is cylindrical roll shaft, and the center diameter is greater than the two ends diameter, and two ends are connected with the center of circle of a disk respectively, seamlessly transits between cylindrical roll shaft and the disk, and the width of guide rollers is identical with the base width of delta.
After fibre bundle gets into the pneumatically spreading device,, therefore can start the expansion internal cavities and form a negative pressure because the blower fan of both sides continues exhausting.At this moment, be the balance that keep-ups pressure, extraneous air can get into cavity, and gas mainly gets into from three positions: yarn inlet, strip air inlet and fibre bundle are pulled out the outlet of pneumatically spreading device.The air that gets into cavity from the strip air inlet disperses fibre bundle from vertical direction, direction is reverse from the air of fiber outlet along pulling disperses fibre bundle.The tension force of supposing given fibre bundle is certain, and then the negative pressure that produces of air gives filament tension force radially and must satisfy certain geometrical relationship, that is:
In the formula, α is the delta drift angle, F
fBe the tension force of fibre bundle, F
aFor air gives filametntary tension force.Under air force and pulling force acting in conjunction, filament just is broken up into film like.
The invention has the beneficial effects as follows: 1, reasonable in design, functional strong, the raw material damage ratio is low.2, the present invention can be dispersed into non-twist continuous tow continuous monofilament shape.3, in the process of the dispersion of this device; Owing to adopted upper cover plate and ladder cavity, can learn through calculating formula (1) and (2), when fiber reaches identical pulling speed and dispersion effect; Air gives filametntary tension force and decreases; The flowing velocity that is air reduces, and has reduced the filament effect of trembling, thereby has reduced the fracture rate of fiber to a certain extent.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of pneumatically spreading device;
Fig. 3 is a castor net sketch map;
Fig. 4 is a grid leaf sketch map;
Fig. 5 is the guide rollers sketch map;
Fig. 6 is the upper cover plate sketch map;
Among the figure: 1-emptying roller, 2-aeroelastic separators, 3-yarn inlet, 4-step sector.5-grid leaf, 6-castor net, 7-blower fan, 8-guide rollers, 9-delta, 10-upper cover plate, 11-material receiving roller, 12-strip air inlet, 13-cross air inlet, 14-grid blade.
The specific embodiment
The distribution of fortifying fibre in matrix in the composite, with matrix material to combine be the key factor of decision composite each item performance; Apparatus of the present invention can not cause under the prerequisite of damage maximized to monofilament; Continuous fibre bundle is disperseed into continuous filament or monofilament shape, and the surface treatment of follow-up fiber or equipment of preimpregnated material manufacture are used altogether.
The course of work of device is as shown in Figure 1, comprises emptying roller 1, pneumatically spreading device 2, guide rollers 8 and material receiving roller 11.Glass fiber bundle Tex-1200 (Tex-2400, Tex-4800);, high-temperature wash is wound on the emptying roller after removing the surface resin drying; Fibre bundle keeps dispersity through guide rollers, at last by the material receiving roller rolling by after putting down and be pulled through the pneumatically spreading device on the emptying roller.
As shown in Figure 2, said pneumatically spreading device comprises delta 9, step sector 4 and blower fan 7.Fibre bundle gets into delta through flat yarn inlet 3, and delta is a cavity that the perspective plane is an isosceles triangle, is made up of upper cover plate 10 and lower cover.As shown in Figure 6, the strip air inlet of arranging along the isosceles triangle center line 12 is arranged on the upper cover plate 10, adjacent two air inlets be spaced apart 1mm.Each air inlet of upper cover plate is symmetrically distributed along the center line of isosceles triangle, and lower cover is real plate.Step sector is two cavitys that the perspective plane is an isosceles trapezoid, and chamber inner height and delta are consistent.Two step sectors are symmetrically distributed in the delta both sides, and the base of two step sector isosceles trapezoids is connected with the waist of delta isosceles triangle respectively, is provided with castor net 6 in the junction.The place, base connects blower fan on step sector, and blower fan and step sector junction are provided with grid leaf 5, and two blower fans are identical.At this moment: the length of the projection waist of delta is 20cm (or 40cm, 60cm); The width of guide rollers be 15cm (or 30cm, 45cm); Radian is 5 degree; Triangle and trapezoidal inner chamber height are 1.6cm; The length of the projection waist of step sector be 60cm (or 80cm, 100cm); Bar shaped air inlet width 100 μ m, length 1mm, spacing 1mm; It is 40% of base length that the corresponding base, zone of air inlet is arranged on the delta upper cover plate; The wind speed that blower fan provides be 0.26m/min (or 0.35m/min, 0.56m/min).Under the situation of negative pressure, fiber can be dispersed into (30cm, 45cm) the film band of width into 15cm under the speed of 0.7m/min; Keep dividing the silk width through guide rollers, finally receive on the material receiving roller subsequent use.
As shown in Figure 3, described castor net 6 is a metallic plate, evenly is placed with the through hole 13 of crosswise opening on it, and the width of cross air inlet is 100 μ m, and length is 1mm, spacing 1mm.
As shown in Figure 4, described grid leaf 5 is to enclose in rectangle a meter font grid blade 14 is arranged in the frame, and grid leaf inside casing is of a size of 10cm*1.6cm; The grid blade height is 20mm.
Described emptying roller and material receiving roller all are cylindrical roll shaft; Guide rollers is cylindrical roll shaft, and is as shown in Figure 5, and the center diameter is greater than the two ends diameter, and the two ends disk that is connected respectively, seamlessly transits between cylindrical roll shaft and the disk, and the width of guide rollers is identical with the base width of delta.
Claims (6)
1. continuous tow dispersing device; Comprise emptying roller, pneumatically spreading device, guide rollers and material receiving roller; It is characterized in that: fibre bundle keeps dispersity through guide rollers, at last by the material receiving roller rolling by after putting down and be pulled through the pneumatically spreading device on the emptying roller; Said pneumatically spreading device comprises delta, step sector and blower fan; Delta is a cavity that the perspective plane is an isosceles triangle, is made up of upper cover plate and lower cover, and the chamber inner height is 1-5mm; The strip air inlet of arranging along the isosceles triangle center line is arranged on the upper cover plate, the wide 100 μ m of air inlet, long 1-3mm, adjacent two air inlets be spaced apart 1mm; Each air inlet of upper cover plate is symmetrically distributed along the center line of isosceles triangle, and corresponding base, the open area that forms of outermost two air inlets and the length ratio on triangle base be 40-60%, and lower cover is real plate; Step sector is two cavitys that the perspective plane is an isosceles trapezoid; And chamber inner height and delta are consistent; Two step sectors are symmetrically distributed in the delta both sides, and the base of two step sector isosceles trapezoids is connected with the waist of delta isosceles triangle respectively, is provided with the castor net in the junction; The place, base connects blower fan on step sector, and blower fan and step sector junction are provided with the grid leaf, and two blower fans are identical.
2. continuous tow dispersing device according to claim 1; It is characterized in that: described castor net is a metallic plate, evenly is placed with the through hole of crosswise opening on it, and the crosswise opening is intersected at its length center by two orthogonal limits and forms; The width on each bar limit is 30-100 μ m; Length is 1-3mm, and adjacent two crosswise openings respectively have a limit on same straight line, and the spacing on these two limits is 1-3mm.
3. continuous tow dispersing device according to claim 1; It is characterized in that: described grid leaf is to enclose in rectangle a meter font grid blade is arranged in the frame; The interior frame length that rectangle is enclosed frame is 10cm, and interior width of frame is trapezoidal inner chamber height, and the grid blade height is 20mm.
4. continuous tow dispersing device according to claim 1 is characterized in that: corresponding drift angle place, described delta base is provided with a yarn inlet, and yarn inlet is cylindric or flat.
5. continuous tow dispersing device according to claim 1 is characterized in that: described triangle waist length is 20-60cm, and step sector waist length is 60-100cm.
6. continuous tow dispersing device according to claim 1 is characterized in that: described emptying roller and material receiving roller all are cylindrical roll shaft; Guide rollers is cylindrical roll shaft, and the center diameter is greater than the two ends diameter, and two ends are connected with the center of circle of a disk respectively, seamlessly transits between cylindrical roll shaft and the disk, and the width of guide rollers is identical with the base width of delta.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204310691U CN202279892U (en) | 2011-11-03 | 2011-11-03 | Continuous fiber bundle dispersing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204310691U CN202279892U (en) | 2011-11-03 | 2011-11-03 | Continuous fiber bundle dispersing device |
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| Publication Number | Publication Date |
|---|---|
| CN202279892U true CN202279892U (en) | 2012-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204310691U Withdrawn - After Issue CN202279892U (en) | 2011-11-03 | 2011-11-03 | Continuous fiber bundle dispersing device |
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| Country | Link |
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| CN (1) | CN202279892U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505242A (en) * | 2011-11-03 | 2012-06-20 | 西北工业大学 | Continuous fiber bundle dispersing device |
| CN103451755A (en) * | 2013-08-31 | 2013-12-18 | 连云港鹰游纺机有限责任公司 | Air handling unit used for carbon fiber precursors |
-
2011
- 2011-11-03 CN CN2011204310691U patent/CN202279892U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505242A (en) * | 2011-11-03 | 2012-06-20 | 西北工业大学 | Continuous fiber bundle dispersing device |
| CN102505242B (en) * | 2011-11-03 | 2013-11-27 | 西北工业大学 | Continuous fiber bundle dispersing device |
| CN103451755A (en) * | 2013-08-31 | 2013-12-18 | 连云港鹰游纺机有限责任公司 | Air handling unit used for carbon fiber precursors |
| CN103451755B (en) * | 2013-08-31 | 2015-08-26 | 江苏鹰游纺机有限公司 | For the air processor of carbon fibre precursor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120620 Effective date of abandoning: 20131127 |
|
| RGAV | Abandon patent right to avoid regrant |