CN110042485B - Homogenizing device for large tow drying densification process - Google Patents
Homogenizing device for large tow drying densification process Download PDFInfo
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- CN110042485B CN110042485B CN201910420424.6A CN201910420424A CN110042485B CN 110042485 B CN110042485 B CN 110042485B CN 201910420424 A CN201910420424 A CN 201910420424A CN 110042485 B CN110042485 B CN 110042485B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/04—Supporting filaments or the like during their treatment
- D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/06—Washing or drying
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- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
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Abstract
The invention provides a homogenizing device for a large tow drying and densifying process, which comprises: at least two drying hot rollers (9), wherein the surfaces of the at least two drying hot rollers (9) are wound with the sheet-shaped tows (8), and the at least two drying hot rollers (9) dry the sheet-shaped tows (8); the guide wheel (7) is arranged between the at least two drying hot rollers (9), the peripheral surface of the guide wheel (7) is in tension contact with the lamellar tows (8), the control range of the tension of the tows is 180-550 cN/K, and the thickness of the filament layer of the lamellar tows (8) is uniform; a support structure (10), the guide wheel (7) being mounted on the support structure (10). The guide wheel is adopted to homogenize the thickness of the laminar tows of the sheet, so that the structure is simple and the operation is convenient; the concave guide wheel or the convex guide wheel can be conveniently, flexibly and accurately selected according to the uneven thickness degree of the silk layer, the practicability is good, and the popularization value is high.
Description
Technical Field
The invention belongs to the technical field of fiber production, and particularly relates to a homogenizing device for a large tow drying and densifying process.
Background
The carbon fiber has the characteristics of high specific strength, high specific modulus, heat resistance, corrosion resistance, fatigue resistance, creep resistance and the like, is a high-performance fiber material, and is widely applied to the industries of aerospace, national defense construction, sports and leisure articles, medical appliances and buildings. The carbon fiber can be divided into polyacrylonitrile-based carbon fiber, asphalt-based carbon fiber and viscose-based carbon fiber, wherein the polyacrylonitrile-based carbon fiber has the widest application range, the largest using amount and the fastest development and has absolute advantages in carbon fiber production.
The polyacrylonitrile-based carbon fiber is prepared from polyacrylonitrile fiber through pre-oxidation and carbonization processes. The high-quality polyacrylonitrile fiber is the basis for industrial production of high-performance polyacrylonitrile-based carbon fiber. At present, the mainstream in China is to prepare the polyacrylonitrile fiber by wet spinning, and the high-viscosity dimethyl sulfoxide solution (polymerization solution) of polyacrylonitrile is prepared into the polyacrylonitrile fiber by multistage coagulation bath forming, water washing, hot water drawing, oiling, drying densification, steam drawing and relaxation heat setting processes in sequence.
Chemical fibers often exhibit significant structural differences between the skin and core of the fiber during fiber formation due to the influence of conditions, and this concurrent structure is called a skin-core structure. For as-spun fibers obtained by wet spinning, this feature can remain in the finished fiber and affect its performance. The fiber with the obvious skin-core structure has low strength, and the skin-core structure bears most of load in high-speed stretching, so that the defect is easy to occur, and the breakage rate in the spinning process is increased due to stress concentration. For chemical fibers, the cause of the sheath-core structure is related to the spinning conditions. In contrast to the sheath-core structure, the fiber tow is homogenized, the higher the homogenization, the more uniform the structure of the sheath and the core of the fiber, the smaller the difference, and the better the quality of the fiber.
The preparation of high-performance polyacrylonitrile-based carbon fiber depends on the quality of polyacrylonitrile fiber, and the core of the preparation of high-quality polyacrylonitrile fiber is to control the homogenization degree of the filament bundle.
The homogenization of the tow involves two aspects:
1. the surface layer and the internal structure of single fibers in a bundle of fibers are uniform and have small difference;
2. the space structures among all the single fibers in one bundle of fibers are uniform, and the overall structure difference is small.
The core of the tow homogenization control is the control of the mass transfer and heat transfer of the tow in the spinning process. In the spinning process of small tows (1K, 3K, 6K means that each tow of fiber contains 6000 single fibers), the mass transfer and heat transfer quantity of the tows in unit time is relatively mild, the influence of the evenness degree of the tows on the mass transfer and heat transfer is small, and the difficulty in preparing the polyacrylonitrile fiber with high homogenization degree is small; in the spinning process of large tows (12K, 24K, 48K and the like), the amount of the tows is large, mass and heat transfer in unit time is severe, the influence of the uniformity of the tows on the mass and heat transfer is large, and further the influence on the homogenization degree of the large tows is large. The influence of the mass transfer and heat transfer on the homogenization of the large tows is most prominent in the processes of spinning, solidification, forming and drying densification, wherein the influence of the evenness of the tows on the mass transfer and heat transfer is larger in the process of drying densification, and the influence on the homogeneity of the tows is larger.
The dry densification process is used for removing moisture from the tows, closing pores and increasing the densification degree. In production, the tow is usually subjected to dry densification by using dry hot rolls. The large tow fiber passes through a plurality of groups of rotating drying hot rollers in a flaky layering state, the laminated tow has larger tow width (namely the width of the laminated tow), in order to ensure uniform drying densification degree of the tow, the average thickness of the tow layering of the large tow polyacrylonitrile fiber on the hot rollers is preferably controlled to be 0.1-0.5mm, and the maximum difference of the tow layering thickness is not more than 0.1 mm.
Due to the factors of dimensional accuracy, radial run-out, matching of drying densification processes and the like of the transmission hot roller, the uneven thickness of the lamellar filament bundle layer is easily caused, the thickness difference exceeds 0.1mm, uneven heat transfer is caused by uneven thickness, uneven drying densification degree of different parts of the filament bundle is caused, and the homogenization degree of the whole filament bundle is reduced.
In the field of traditional fiber processing, a rolling method and an air comb blowing method are commonly used for improving the evenness of tows. Wherein the method of rolling adopts the heating hot-rolling to carry out even two-sided rolling to the silk bundle, promotes the homogeneity of silk bundle thickness, is favorable to follow-up processing, but the method of rolling is not applicable to dry densification process, and dry densification process still relates to fiber structure's physical change process, if adopt two-sided rolling, though can promote the silk bundle regularity, nevertheless can influence fibre moisture and get rid of history, the closed physical process of hole, and then influence fiber structure. The air comb blows evenly and neatly, and the blowing process is easy to make tender fiber bundles fluffy and have obvious broken filaments in the spinning process, so that the subsequent process conditions are influenced.
Disclosure of Invention
Therefore, the invention provides the homogenizing device for the large tow drying and densifying process, which aims to solve the technical problem that the thickness of the fiber layer of the large wide layered tow is not uniform in the large tow drying and densifying process.
In order to solve the problems, the invention provides a homogenizing device for a large tow drying and densifying process, which comprises:
the drying device comprises at least two drying hot rollers, at least two drying hot rollers and a drying device, wherein the surfaces of the at least two drying hot rollers are wound with sheet-shaped tows;
the guide wheel is arranged between the at least two drying hot rollers, the peripheral surface of the guide wheel is in tension contact with the lamellar tows, the tow tension regulation and control range is 180 + 550 cN/K, and the thickness of the filament layer of the lamellar tows is uniform;
and the guide wheel is arranged on the supporting structure.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, the guide wheel has different diameters of different sections perpendicular to the axis, the diameter of the section being proportional to the thickness of the layer of filaments of the tow corresponding to said section.
Preferably, the guide wheel is a concave guide wheel, and/or a convex guide wheel, and/or a conical guide wheel.
Preferably, the curvature of the concave arc of the concave guide wheel is inversely proportional to the width of the filament bundle of the laminated filament bundle and is proportional to the difference value of the thickness of the filament layers of the laminated filament bundle; and/or the curvature of the convex arc of the convex guide wheel is inversely proportional to the width of the filament bundle of the laminated filament bundle and is proportional to the difference value of the thickness of the filament layers of the laminated filament bundle.
Preferably, the support structure comprises a support guide bar provided with a height adjustment device, the guide wheel being mounted on the support guide bar.
Preferably, at least one concave guide wheel, at least one convex guide wheel and/or at least one conical guide wheel are movably arranged on the support guide rod through the swing arm assembly.
Preferably, the central angle alpha of the guide wheel corresponding to the contact area of the lamellar tows and the outer peripheral surface of the guide wheel ranges from 15 degrees to 120 degrees.
Preferably, the swing arm assembly comprises a swing arm and a positioning pin, the guide wheel is mounted at one end of the swing arm, the other end of the swing arm is movably mounted on the support guide rod, the swing arm can move along the axial direction of the support guide rod and can rotate around the axis of the support guide rod, the axis of the guide wheel is parallel to the axis of the support guide rod, and the positioning pin is used for fixing the swing arm on the support guide rod.
Preferably, the guide wheel is made of metal materials, and the peripheral surface of the guide wheel is provided with a ceramic coating.
Preferably, both end surfaces of the guide wheel are respectively provided with a width leveling plate protruding out of the outer peripheral surface of the guide wheel.
The homogenizing device for the large tow drying and densifying process provided by the invention has the following beneficial effects:
1. the guide wheel is adopted to homogenize the thickness of the laminar tows of the sheet, so that the structure is simple and the operation is convenient; the concave guide wheel or the convex guide wheel can be conveniently, flexibly and accurately selected according to the uneven thickness degree of the wide silk layer, and the contact tension between the guide wheel and the silk bundle can be conveniently adjusted.
2. The local wearing parts, such as guide wheels with ceramic coatings, of the invention are movably connected and can be replaced at any time according to requirements, thus being convenient for disassembly and maintenance;
3. the method has good effect of controlling the thickness uniformity of the filament layer, effectively controls the thickness uniformity of the filament bundle layer in the drying densification process, and improves the uniformity of the width of the filament bundle, thereby integrally improving the homogenization degree of the filament bundle; good practicability and high popularization value.
Drawings
FIG. 1 is a schematic view of a homogenizer configuration and installation for a large tow dry densification process according to an embodiment of the present invention;
FIG. 2 is a schematic view of a concave arc of a concave idler of an embodiment of the present invention;
FIG. 3 is a schematic view of a convex arc of a convex idler of an embodiment of the present invention;
fig. 4 is a schematic view of a combination of a concave guide wheel and a convex guide wheel according to an embodiment of the present invention.
The reference numerals are represented as:
1. a concave guide wheel; 2. a convex guide wheel; 3. swinging arms; 4. positioning pins; 5. a support guide rod; 6. a height adjustment device; 7. a guide wheel; 8. a lamellar tow; 9. drying the hot roller; 10. a support structure; 11. and (5) a width-homogenizing board.
Detailed Description
Referring to fig. 1 to 4 in combination, an embodiment of the present invention provides a homogenizing device for a large tow dry densification process, including: at least two drying hot rollers 9, wherein the surface of the at least two drying hot rollers 9 is wound with the laminated tows 8, and the laminated tows 8 are dried by the at least two drying hot rollers 9; the guide wheel 7 is arranged between the at least two drying hot rollers 9, the peripheral surface of the guide wheel 7 is in tension contact with the lamellar tows 8, the tow tension regulation and control range is 180-; a support structure 10, and a guide wheel mounted on the support structure 10.
The homogenization device of big silk bundle drying densification process of this embodiment, a drying densification in-process for big silk bundle nascent fiber, big silk bundle is walked around multiunit drying hot-roller 9 with the form of lamella form silk bundle 8, carry out drying densification, adopt guide pulley 7 to carry out the homogenization to the thickness of lamella form silk bundle 8 between drying hot-roller 9, guide pulley 7 is with certain angle, certain tensioning contact is on lamella form silk bundle 8, the compressive force that the part that lamella form silk bundle 8 is thicker receives is greater than thinner part, lamella form silk bundle 8 is under the compressive force effect of difference, the single fiber in the thicker part is spread evenly to thinner part, thereby realize the even and orderly thickness of silk bundle layer. The tow 8 with uniform thickness is wound to the drying hot roller 9 again, and the tow 9 is heated uniformly. The embodiment has the advantages of simple structure, convenient operation, good effect of uniform thickness of the silk bundle layer and great practical value.
In the process of drying and densifying, the tows are tender, the tensioning force needs to be strictly controlled, the tows are damaged due to too large tension, broken tows are generated, and the even and tidy effect is poor due to too small tension, so that the tension regulation and control range of the tows is controlled to be 180-550 cN/K, and the even and tidy effect cannot be realized due to the fact that the tension exceeds 550 cN/K or is less than 180 cN/K through experimental verification.
In this embodiment, the diameter of the different sections of the guide wheel 7 perpendicular to the axis is different and is proportional to the thickness of the filament layer of the filament bundle corresponding to said section. Preferably, the guide wheel 7 can be a concave guide wheel 1, and/or a convex guide wheel 2, and/or a conical guide wheel. The concave guide wheel 1 is shaped by processing an inwards concave circular arc ring groove on the peripheral surface of the cylindrical guide wheel, the convex guide wheel 2 is shaped by additionally arranging an outwards convex circular arc convex ring on the basis of the peripheral surface of the cylindrical guide wheel, the conical guide wheel is shaped like a circular table, the diameters of two end surfaces are different, one end is larger, and the other end is smaller.
The concave guide wheel 1 is suitable for the thickness uniformity of the middle thin laminated filament bundle filament layers with two thick sides, the convex guide wheel 2 is suitable for the thickness uniformity of the middle thick laminated filament bundle filament layers with two thin sides, and the conical guide wheel is suitable for the thickness uniformity of the one side thick laminated filament bundle filament layers with one thin side. In addition, the guide wheel 7 may have other irregular outer peripheral surfaces, such as a convex surface section and a conical surface section.
For the concave guide wheel 1 and the convex guide wheel 2, the curvature of the concave arc of the concave guide wheel 1 is inversely proportional to the width of the filament bundle of the lamellar filament bundle 8 and is proportional to the difference value of the thickness of the filament layer of the lamellar filament bundle 8; and/or the curvature of the convex arc of the convex guide wheel 2 is inversely proportional to the width of the laminated tows 8 and is proportional to the difference of the thicknesses of the filament layers of the laminated tows 8.
Specifically, the larger the lamellar filament bundle 8 is, the larger the values of the widths W of the concave arc and the convex arc are, the larger the value of the depth H of the arc surface is, the larger the value of the radius R of the arc surface is, and the smaller the curvature of the arc surface is. The larger the non-uniform degree of the thickness of the silk layer is, namely the larger the thickness difference value is, the larger the value of the depth H of the arc surface is, the smaller the value of the radius R of the arc surface is, and the larger the curvature of the arc surface is.
After the laminar filament bundle 8 is contacted with the outer peripheral surface of the guide wheel 7, the filament bundle is soft in texture, under the action of tension, the filament bundle is contacted with the outer peripheral surface of the guide wheel 7 on a section of arc surface, the section of arc surface can be called as a contact area, the contact area is displayed as an arc of one end in the projection of the axis of the guide wheel, the included angle of two radial lines respectively passing through the two ends of the arc is equal to the central angle alpha of the guide wheel 7 corresponding to the arc, or called as a filament bundle wrap angle, namely the central angle of the guide wheel 7 corresponding to the contact area. The wrap angle of the tow will also affect the tow leveling effect. The larger the tow wrap angle is, the larger the contact area of the tow and the guide wheel 7 is, and the longer the contact time of the tow at the same position and the guide wheel 7 is, which also means that the guide wheel 7 has longer leveling action time on the tow and better leveling effect. Therefore, in the embodiment, the central angle range of the guide wheel 7 corresponding to the contact area of the sheet-shaped tows 8 and the outer peripheral surface of the guide wheel 7 is 15-120 degrees, and the guide wheel 7 has the best leveling effect on the sheet-shaped tows 8 in the angle range.
In this embodiment the support structure 10 comprises a support guide 5, the support guide 5 being provided with a height adjustment device 6. In actual production, large tow fibers pass through a plurality of groups of rotating drying hot rollers in a sheet-shaped laminating state, the thickness of the filament layer is uniform and needs to be performed between the two drying hot rollers 9, and the guide wheel 7 needs to be arranged between the two drying hot rollers 9. In this embodiment, the guide wheel 7 is movably mounted on the support guide rod 5 of the support structure 10 through the swing arm assembly, the guide wheel 7 contacts the layered tow 8 from bottom to top, and the support guide rod 5 provides tension for the guide wheel 7, so that the guide wheel 7 contacts the surface of the layered tow 8 and generates sufficient pressure for the layered tow 8 to transversely slide and uniformly spread single fibers.
In actual production, a plurality of spinning positions of the lamellar tows 8 are required to be subjected to a drying densification process at the same time, namely, a plurality of bundles of lamellar tows 8 pass through a drying hot roller 9, a plurality of guide wheels 7 can be simultaneously arranged on the supporting guide rod 5, and the thickness of each bundle of lamellar tows 8 is uniform. Considering that the thickness of the filament layer of each layered filament bundle 8 may have different thickness unevenness, such as thin two sides at the back of the middle, thin two sides at the middle, thin one side and thick one side, at this time, a plurality of guide wheels 7 need to be configured in a targeted manner according to the difference of the thickness unevenness of the filament layer, different types of guide wheels 7 such as a concave guide wheel 1, a convex guide wheel 2, a conical guide wheel are configured in a combined manner, and at this time, at least one concave guide wheel 1, and/or at least one convex guide wheel 2, and/or at least one conical guide wheel are mounted on the supporting structure 10.
In the actual production of the large-tow polyacrylonitrile wet spinning, concave, convex and conical guide wheels with different quantities and different parameters can be prepared, and the concave, convex and conical guide wheels can be used according to specific use conditions, such as: the sizes of the tows (12K, 24K, 48K and the like) and the uneven degree of the thickness of the tow layer are flexibly selected.
In this embodiment, the swing arm subassembly includes swing arm 3, locating pin 4, and guide pulley 7 installs the one end at swing arm 3, and the other end of swing arm 3 passes through bearing movable mounting on support guide 5. The swing arm 3 preferably adopts a fan-shaped structure with a larger sectional area at one end and a smaller sectional area at the other end, wherein the end with the larger sectional area is arranged on the support guide rod 5, which is beneficial to improving the stability of the swing arm 3.
In order to ensure the sufficient strength and stability of the supporting structure 10, the swing arm 3 and the supporting guide rod 5 are made of metal materials. The guide wheel 7 is made of metal materials, and a ceramic coating is arranged on the peripheral surface of the guide wheel 7. The ceramic coating on the metal surface is a general name of a heat-resistant inorganic protective layer or a surface film which is coated on the metal surface. The ceramic coating is coated on the surface of the metal to prepare the ceramic coating, which not only has the strength and toughness of the metal, but also has the advantages of high temperature resistance, high temperature oxidation resistance, wear resistance, corrosion resistance and the like of the ceramic material.
The preparation method of the ceramic coating on the metal surface mainly comprises a spraying method (comprising flame spraying, explosion spraying, plasma spraying, line explosion spraying and electric arc spraying), a chemical vapor deposition method, a physical vapor deposition method, an in-situ reaction method and a sol-gel method.
The sheet-shaped tows 8 are required to be as uniform as possible in terms of tow width besides the uniformity in terms of tow layer thickness, the width homogenizing plates 11 protruding out of the outer peripheral surface of the guide wheel 7 are respectively arranged on the two end surfaces of the guide wheel 7, and the width homogenizing plates 11 are erected on the side surfaces of the sheet-shaped tows 8 to laterally homogenize the tow width.
Taking the production of 24k fiber as an example, twelve spinning positions are simultaneously prepared, twelve pseudo-position lamellar tows 8 pass through a drying hot roller 9 simultaneously, wherein six spinning position lamellar tows 8 are thin in the middle and thick at two sides, the average thickness in the middle is 0.08mm, the average thickness at two sides is 0.45mm, the degree of thickness unevenness is serious, the maximum thickness difference is 0.37mm, and the width of lamellar tows is 4cm, then in the leveling process, six concave guide wheels 1 are used, and the arc width of the concave guide wheels is wide: 4.5 cm; depth of arc surface: 1 cm; arc surface radius: 4 cm.
The thickness of the silk layer of the running lamellar silk bundle 8 between the two drying hot rollers 9 is obviously uneven, firstly, the height adjusting device 6 is adjusted, the supporting guide rod 5 is arranged at a proper height, then the positions of the swing arms 3 of the six concave guide wheels 1 on the supporting guide rod 5 are sequentially adjusted, when the swing arm 3 of each concave guide wheel 1 rotates at the position, the concave guide wheels 1 are accurately matched and contacted with the lamellar silk bundle 8, then, the rotating position of the swing arm 3 of each concave guide wheel 1 is adjusted according to the uneven degree of the silk layer thickness of each lamellar silk bundle 8, the lamellar silk bundle 8 is contacted with the concave guide wheel 1 at a proper angle and a proper tension, the thickness of the silk layer is even after the lamellar silk bundle 8 passes through the concave guide wheel 1, and finally, the positioning pin 4 of the swing arm 3 of the concave guide wheel 1 is screwed, and the position and the angle of the swing arm 3 of.
After passing through a homogenizing device in the large tow drying and densification process, the thickness of the silk layer of the layered tow 8 with six spinning position sheets is homogenized, the average thickness of the silk layer is 0.27mm, and the maximum thickness difference of the silk layer is 0.08 mm.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. A leveling device for a large tow drying and densification process, wherein the large tow is a polyacrylonitrile fiber bundle of 12K or more, and the leveling device is characterized by comprising the following components:
at least two drying hot rollers (9), wherein the surfaces of the at least two drying hot rollers (9) are wound with the sheet-shaped tows (8), and the at least two drying hot rollers (9) dry the sheet-shaped tows (8);
the guide wheel (7) is arranged between the at least two drying hot rollers (9), the peripheral surface of the guide wheel (7) is in tension contact with the lamellar tows (8), the control range of the tension of the tows is 180-550 cN/K, and the lamellar tows (8) are uniformly spread to the part with smaller stress of the single fibers with larger stress under the action of differential stress force, so that the thickness of the filament layer of the lamellar tows (8) is uniform;
a support structure (10), on which support structure (10) the guide wheel (7) is mounted;
the central angle alpha of the guide wheel (7) corresponding to the contact area of the lamellar tows (8) and the outer peripheral surface of the guide wheel (7) ranges from 15 degrees to 120 degrees.
2. A homogenizing apparatus for dry densification of large tows as claimed in claim 1, wherein the diameter of the different cross-sections of the guiding wheel (7) perpendicular to the axis is different, the diameter of the cross-section being proportional to the thickness of the filament layer of the tow corresponding to the cross-section.
3. A homogenizing device for the dry densification process of large tows according to claim 2, characterized in that the guide wheel (7) is a concave guide wheel (1), and/or a convex guide wheel (2), and/or a conical guide wheel.
4. A homogenizing device for large tow dry densification process according to claim 3 characterized in that the curvature of the concave arc of the concave guide wheel (1) is inversely proportional to the tow width of the sheet tow (8) and directly proportional to the difference in filament layer thickness of the sheet tow (8); and/or the curvature of the convex arc of the convex guide wheel (2) is inversely proportional to the width of the laminar tows (8) and is proportional to the difference of the thicknesses of the filament layers of the laminar tows (8).
5. A homogenizing apparatus for dry densification of large tows according to claim 3, characterized in that the support structure (10) comprises a support and guide rod (5), the support and guide rod (5) being provided with a height adjusting device (6); the guide wheel (7) is arranged on the support guide rod (5).
6. A homogenizing device for the drying densification process of large tows as claimed in claim 4, wherein the support guide rod (5) is movably provided with at least one concave guide wheel (1), at least one convex guide wheel (2) and/or at least one conical guide wheel through a swing arm assembly.
7. A homogenizing device for the drying and densification process of large tows as claimed in claim 6, wherein the swing arm assembly comprises a swing arm (3) and a positioning pin (4), the guide wheel (7) is installed at one end of the swing arm (3), the other end of the swing arm (3) is movably installed on the support guide rod (5), the swing arm (3) can move along the axial direction of the support guide rod (5) and can rotate around the axis of the support guide rod (5), the axis of the guide wheel (7) is parallel to the axis of the support guide rod (5), and the positioning pin (4) is used for fixing the swing arm (3) on the support guide rod (5).
8. The large tow drying and densification process homogenizing device according to any of claims 1-7, wherein the guide wheel (7) is made of a metal material, and the outer circumferential surface of the guide wheel (7) is provided with a ceramic coating.
9. A homogenizing device for the drying densification process of large tows as claimed in claim 8, wherein the two end faces of the guide wheel (7) are respectively provided with a width homogenizing plate (11) protruding out of the outer peripheral surface of the guide wheel (7).
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| JPS6398426A (en) * | 1986-10-15 | 1988-04-28 | Fuji Heavy Ind Ltd | Heating equipment of roving in winding processing equipment of filament |
| CN2500692Y (en) * | 2001-11-20 | 2002-07-17 | 上海市合成纤维研究所 | Equipment for drying densifying of polyacrylonitrile fibre presoma |
| WO2004113600A1 (en) * | 2003-06-18 | 2004-12-29 | Denki Kagaku Kogyo Kabushiki Kaisha | Drawing method and apparatus |
| JP4128169B2 (en) * | 2004-10-27 | 2008-07-30 | 弘治 大石橋 | Fiber expansion equipment |
| CN202881535U (en) * | 2012-10-19 | 2013-04-17 | 宁波大发化纤有限公司 | Adjusting device of front textile cables of crimper |
| JP2014122449A (en) * | 2012-12-21 | 2014-07-03 | Teijin Ltd | Method for manufacturing widened strand |
| CN205035546U (en) * | 2015-10-16 | 2016-02-17 | 北京合力星新材料技术有限公司 | Carbon fiber expanding unit |
| CN105624874B (en) * | 2016-03-23 | 2018-05-01 | 江苏澳盛复合材料科技有限公司 | A kind of carbon fiber broadening equipment and technique |
| CN106498519B (en) * | 2016-11-16 | 2018-10-30 | 哈尔滨天顺化工科技开发有限公司 | A kind of carbon fibre precursor spinning compacting by drying device |
| CN107904738B (en) * | 2017-11-10 | 2020-02-14 | 河南工业大学 | Large-tow carbon fiber widening and curing integrated preparation technology |
| CN207659584U (en) * | 2017-11-14 | 2018-07-27 | 无锡市鼎麒新材料科技有限公司 | A kind of dry type ultrasonic wave multiply fiber stretching device |
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Effective date of registration: 20230329 Address after: 030100 Jinyi Village, Yangqu County, Taiyuan City, Shanxi Province Patentee after: SHANXI GANGKE CARBON MATERIALS CO.,LTD. Address before: 030001 No. 27 Taoyuan South Road, Shanxi, Taiyuan Patentee before: INSTITUTE OF COAL CHEMISTRY, CHINESE ACADEMY OF SCIENCES |