CN220183455U - Deflector roll combination suitable for carbon fiber tow is tied in a bundle - Google Patents
Deflector roll combination suitable for carbon fiber tow is tied in a bundle Download PDFInfo
- Publication number
- CN220183455U CN220183455U CN202321565436.6U CN202321565436U CN220183455U CN 220183455 U CN220183455 U CN 220183455U CN 202321565436 U CN202321565436 U CN 202321565436U CN 220183455 U CN220183455 U CN 220183455U
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- China
- Prior art keywords
- valley
- arc
- tows
- guide roller
- carbon fiber
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 29
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 27
- 239000010439 graphite Substances 0.000 claims abstract description 27
- 238000003763 carbonization Methods 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 abstract description 7
- 239000000835 fiber Substances 0.000 abstract description 6
- 239000002657 fibrous material Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Inorganic Fibers (AREA)
Abstract
In the pre-oxidation stage of carbon fiber tows, the tows travel in an S shape in a pre-oxidation furnace, are required to be reversely guided for a plurality of times by the guide rollers, and a pre-oxidation bundling roller with smoothly connected peak parts and valley parts is adopted; in the graphite fiber tow graphite carbonization stage, a graphite carbonization bundling roller with a valley part having an optical axis section with a certain width is adopted to flatten the tows in respective grooves, so that the tows can be quickly carbonized in a high-temperature environment and fully infiltrated with various liquids in the subsequent working procedures; the guide roller combination selects guide rollers with different groove shapes to carry out 'forced isolation' on the tows in different stages of the carbonization process through the fiber material tows, reduces friction between the tows and the roller surface, reduces abrasion on the surfaces of the tows, avoids the phenomenon of tow doubling, and provides guarantee for production of high-performance carbon fiber products meeting the requirements.
Description
Technical Field
The utility model relates to the field of carbon fiber preparation, in particular to a guide roller combination suitable for carbon fiber tow bundling.
Background
In the prior art, when the carbon fiber precursor is carbonized, purified water without metal ions is used for bundling carbon fibers, and then preoxidation is carried out in air at 180-280 ℃, and the process mainly comprises the steps of dehydrogenating and cyclizing polyacrylonitrile under the action of heat and oxygen to obtain the preoxidized fiber. And carbonizing at high and low temperatures in inert atmosphere at 300-1000 ℃ and 1100-1600 ℃, further decomposing the pre-oxidized fiber at high temperature, further breaking the main chain and the side chain, and finally forming the high-performance carbon fiber with the disordered layer graphite structure and containing more than 95% of carbon. And drawing at 2000-3000 deg.c in inert atmosphere and with drawing ratio of 1.01-1.06 to obtain graphite fiber with three-dimensional ordered graphite structure. The resulting carbon fiber and graphite fiber tows are transported through a number of drawing rolls and godet rolls.
In the conveying process, as the carbon fiber tows are slender, the tows and the roller surface can generate friction, so that the surfaces of the tows are damaged, meanwhile, the two sides of the tows are scattered and crossed to generate a doubling phenomenon, and the strength and the rigidity of the fiber materials are reduced, so that a guide roller with a new structure is required to be designed, and the strength and the rigidity of the fiber materials are ensured.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the guide roller combination for the carbon fiber tow bundling, which has simple structural design, small friction between the tow and the roller surface during processing and no yarn doubling phenomenon.
The technical problem to be solved by the utility model is realized by the following technical scheme that the guide roller combination suitable for collecting carbon fiber tows comprises a pre-oxidation bundling roller and a graphite carbonization bundling roller; the preoxidation bundling roller comprises a guide roller body I, wherein a plurality of arc-shaped grooves which are distributed at equal intervals are formed in the outer circumferential surface of the guide roller body I, arc-shaped concave valley parts I are formed in the arc-shaped grooves, and corresponding guide roller bodies I adjacent to the valley parts I are arranged to be arc-shaped convex peak parts I; the peak part I is provided with an extending end extending towards the adjacent valley part I, the valley part I is provided with an extending end extending towards the adjacent peak part I, and the extending end of the peak part I is smoothly connected with the extending end of the valley part I; the graphite carbonization bundling roller comprises a guide roller body II, wherein a plurality of trapezoid grooves which are distributed at equal intervals are formed in the outer circumferential surface of the guide roller body II, concave valley parts II are formed in the trapezoid grooves, and corresponding guide roller bodies II adjacent to the valley parts II are arranged to be convex peak parts II; the middle section of the peak part II is provided with an optical axis section I, two ends of the optical axis section I are provided with arc-shaped connecting surfaces I extending towards the adjacent valley part II, and the arc-shaped connecting surfaces I are smoothly connected with connecting slope surfaces extending towards the valley part II; the middle section of the valley part II is provided with an optical axis section II, two ends of the optical axis section II are provided with arc-shaped connecting surfaces II extending towards the adjacent peak part II, and the arc-shaped connecting surfaces II are smoothly connected with the other end of the connecting slope.
The distance from the peak point I of the pre-oxidation bundling roller to the bottom point I of the valley part is 2-4 times of the diameter of the filament bundle.
The radius of the circular arc of the peak part I and the valley part I of the preoxidation bundling roller is 1-2 times of the diameter of the tow.
The distance from the surface of the optical axis section I of the peak part II of the graphite carbonization bundling roller to the surface of the optical axis section II of the valley part II is 2-4 times of the diameter of the filament bundle.
The width of the optical axis section II of the valley part II of the graphite carbonization bundling roller is 1-3 times of the diameter of the tow.
The curvature of the arc-shaped connecting surface I and the arc-shaped connecting surface II of the peak part II and the valley part II of the graphite carbonization bundling roller is 0.5-1.
The guide roller combination for bundling carbon fiber tows has the advantage that the inclined included angle formed by two connecting slopes in one trapezoid groove of the graphite carbonization bundling roller is 20-24 degrees.
Compared with the prior art, the guide roller combination adopts guide rollers with different groove shapes to carry out 'forced isolation' on the tows through different stages of the carbonization process of the fiber material tows, reduces friction between the tows and the roller surface, reduces abrasion on the surfaces of the tows, avoids the phenomenon of tow doubling, and provides guarantee for producing high-performance carbon fiber products meeting the requirements.
Drawings
FIG. 1 is a schematic diagram of a pre-oxidized cluster roll;
FIG. 2 is a schematic diagram of a graphite carbonization cluster roller structure;
FIG. 3 is an enlarged view of a portion of FIG. 1A;
FIG. 4 is an enlarged view of a portion of I in FIG. 2;
in the drawing, the guide roller body I, 2, the arc-shaped groove, 3, the valley part I, 4, the peak part I, 5, the guide roller body II, 6, the trapezoid groove, 7, the peak part II, 8, the valley part II, 9, the connecting slope surface, 71, the optical axis section I, 72, the arc-shaped connecting surface I, 81, the optical axis section II, 82 and the arc-shaped connecting surface II.
Detailed Description
The following further describes the specific technical solutions of the present utility model, so that the purpose, technical solutions and advantages of the embodiments of the present utility model will be more apparent to those skilled in the art to further understand the present utility model, and the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments, but not limitations on the claims thereof. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1 referring to fig. 1 and 2, a guide roller combination suitable for carbon fiber tow gathering includes a pre-oxidized gathering roller and a graphite carbonized gathering roller.
The preoxidation bundling roller comprises a guide roller body I1, a plurality of arc-shaped grooves 2 which are distributed at equal intervals are formed in the outer circumferential surface of the guide roller body I1, arc-shaped grooves 2 are provided with arc-shaped concave valley portions I3, and corresponding guide roller bodies I1 adjacent to the valley portions I3 are arranged to be arc-shaped convex peak portions I4.
The peak portion I4 is provided with the extension end that extends towards adjacent valley portion I3, and valley portion I3 is provided with the extension end that extends towards adjacent peak portion I4, and peak portion I4 extension end and valley portion I3 extension end slick and sly are connected.
In the guide roller combination for bundling carbon fiber tows according to embodiment 2 and embodiment 1, referring to fig. 3 and 4, the graphite carbonization bundling roller includes a guide roller body ii 5, a plurality of trapezoid grooves 6 arranged at equal intervals are provided on the outer circumferential surface of the guide roller body ii 5, the trapezoid grooves 6 are provided with concave valleys ii 8, and the corresponding guide roller body ii 5 adjacent to the valleys ii 8 is provided with convex peaks ii 7.
The peak portion II 7 middle section sets up to optical axis section I71, and optical axis section I71 both ends are equipped with the arc joint face I72 that extends towards adjacent valley portion II 8, and arc joint face I72 slick and sly is connected with the connection slope 9 that extends towards valley portion II 8.
The middle section of the valley part II 8 is provided with an optical axis section II 81, two ends of the optical axis section II 81 are provided with arc-shaped connecting surfaces II 82 extending towards the adjacent peak parts II 7, and the arc-shaped connecting surfaces II 82 are smoothly connected with the other ends of the connecting slopes 9.
In example 3, the guide roller combination for bundling carbon fiber tows described in example 1 was used, and the distance from the peak of peak portion i 4 to the bottom of valley portion i 3 of the pre-oxidation bundling roller was 2-4 times the diameter of the tows.
The arc radius of the peak part I4 and the valley part I3 of the preoxidation bundling roller is 1-2 times of the diameter of the filament bundle.
In example 4, the guide roller combination for carbon fiber tow bundling described in example 2, the distance from the surface of the optical axis section I71 of the peak part II 7 to the surface of the optical axis section II 81 of the valley part II 8 of the graphite carbonization bundling roller is 2-4 times the diameter of the tow.
The width of an optical axis section II 81 of the valley part II 8 of the graphite carbonization bundling roller is 1-3 times of the diameter of the filament bundle.
The curvatures of the arc-shaped connecting surface I72 and the arc-shaped connecting surface II 82 of the peak part II 7 and the valley part II 8 of the graphite carbonization bundling roller are 0.5-1.
The inclined included angle formed by two connecting slopes 9 in one trapezoid groove 6 of the graphite carbonization bundling roller is 20-24 degrees.
When the carbon fiber pre-oxidation device is used, in the carbon fiber tow pre-oxidation stage, the tow moves in an S shape in a pre-oxidation furnace, reverse guiding is needed to be carried out for many times through a guide roller, and a pre-oxidation bundling roller with a peak part I4 and a valley part I3 in smooth connection is adopted; in the graphite fiber tow graphite carbonization stage, a graphite carbonization bundling roller with a valley part II 8 having a certain width optical axis section II 81 is adopted to flatten the tows in the respective grooves, so that the tows can be quickly carbonized in a high-temperature environment and fully infiltrated with various liquids in the subsequent working procedures; the guide roller combination selects guide rollers with different groove shapes to carry out 'forced isolation' on the tows in different stages of the carbonization process through the fiber material tows, reduces friction between the tows and the roller surface, reduces abrasion on the surfaces of the tows, avoids the phenomenon of tow doubling, and provides guarantee for production of high-performance carbon fiber products meeting the requirements.
Claims (7)
1. The utility model provides a deflector roll combination suitable for carbon fiber tow collection bundle which characterized in that:
comprises a preoxidation bundling roller and a graphite carbonization bundling roller;
the preoxidation bundling roller comprises a guide roller body I, wherein a plurality of arc-shaped grooves which are distributed at equal intervals are formed in the outer circumferential surface of the guide roller body I, arc-shaped concave valley parts I are formed in the arc-shaped grooves, and corresponding guide roller bodies I adjacent to the valley parts I are arranged to be arc-shaped convex peak parts I; the peak part I is provided with an extending end extending towards the adjacent valley part I, the valley part I is provided with an extending end extending towards the adjacent peak part I, and the extending end of the peak part I is smoothly connected with the extending end of the valley part I;
the graphite carbonization bundling roller comprises a guide roller body II, wherein a plurality of trapezoid grooves which are distributed at equal intervals are formed in the outer circumferential surface of the guide roller body II, concave valley parts II are formed in the trapezoid grooves, and corresponding II adjacent to the valley parts II are arranged as convex peak parts II; the middle section of the peak part II is provided with an optical axis section I, two ends of the optical axis section I are provided with arc-shaped connecting surfaces I extending towards the adjacent valley part II, and the arc-shaped connecting surfaces I are smoothly connected with connecting slope surfaces extending towards the valley part II;
the middle section of the valley part II is provided with an optical axis section II, two ends of the optical axis section II are provided with arc-shaped connecting surfaces II extending towards the adjacent peak part II, and the arc-shaped connecting surfaces II are smoothly connected with the other end of the connecting slope.
2. The guide roller assembly for a carbon fiber tow bundle according to claim 1, wherein:
the distance from the peak point of the peak part I to the bottom point of the valley part I of the pre-oxidation bundling roller is 2-4 times of the diameter of the filament bundle.
3. The guide roller combination suitable for bundling carbon fiber tows according to claim 1 or 2, wherein:
the arc radiuses of the peak parts I and the valley parts I of the pre-oxidation bundling roller are 1-2 times of the diameter of the filament bundle.
4. The guide roller assembly for a carbon fiber tow bundle according to claim 1, wherein:
the distance from the surface of the optical axis section I of the peak part II of the graphite carbonization bundling roller to the surface of the optical axis section II of the valley part II is 2-4 times of the diameter of the filament bundle.
5. The guide roller assembly for a carbon fiber tow bundle according to claim 1 or 4, wherein:
the width of the optical axis section II of the valley part II of the graphite carbonization bundling roller is 1-3 times of the diameter of the filament bundle.
6. The guide roller assembly for a carbon fiber tow bundle according to claim 1 or 4, wherein:
the curvature of the arc-shaped connecting surface I and the arc-shaped connecting surface II of the peak part II and the valley part II of the graphite carbonization bundling roller is 0.5-1.
7. The guide roller assembly for a carbon fiber tow bundle according to claim 1, wherein:
the inclined included angle formed by two connecting slopes in one trapezoid groove of the graphite carbonization bundling roller is 20-24 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321565436.6U CN220183455U (en) | 2023-06-19 | 2023-06-19 | Deflector roll combination suitable for carbon fiber tow is tied in a bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321565436.6U CN220183455U (en) | 2023-06-19 | 2023-06-19 | Deflector roll combination suitable for carbon fiber tow is tied in a bundle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220183455U true CN220183455U (en) | 2023-12-15 |
Family
ID=89104137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321565436.6U Active CN220183455U (en) | 2023-06-19 | 2023-06-19 | Deflector roll combination suitable for carbon fiber tow is tied in a bundle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220183455U (en) |
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2023
- 2023-06-19 CN CN202321565436.6U patent/CN220183455U/en active Active
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