CN106757435B - M-shaped hot drafting device for carbon fiber precursor production - Google Patents
M-shaped hot drafting device for carbon fiber precursor production Download PDFInfo
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- CN106757435B CN106757435B CN201611175033.5A CN201611175033A CN106757435B CN 106757435 B CN106757435 B CN 106757435B CN 201611175033 A CN201611175033 A CN 201611175033A CN 106757435 B CN106757435 B CN 106757435B
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- holding roller
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- box
- drafting
- carbon fiber
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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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
Abstract
The invention discloses an M-shaped hot drafting device for producing carbon fiber precursors, and belongs to the technical field of carbon fiber processing equipment. The steam drafting device comprises a solvent tank and a drafting box communicated with the solvent tank. The drawing box comprises a plurality of groups of holding roller sets and spraying pipes; each group of holding roller group comprises an upper layer, a middle layer and a lower layer which are distributed in an M shape. The distance between the axis of the middle layer holding roller and the axes of the adjacent upper layer holding roller and the lower layer holding roller in the horizontal direction is smaller than the diameter of the two adjacent holding rollers. The bottom of the solvent tank is provided with a heating pipe, the upper part of the solvent tank is provided with a sealing cover, and sealing devices are arranged outside the outlet and the inlet of the fiber tows. The rotating speed of the holding roller in the drafting box is gradually increased along the moving direction of the fiber tows. The steam drafting device has the advantages of small occupied space, large holding force, strong drafting performance and the like.
Description
Technical Field
The invention relates to a method and belongs to the technical field. An M-shaped hot drafting device for producing carbon fiber precursors belongs to the technical field of carbon fiber processing equipment.
Background
The carbon fiber is an inorganic polymer fiber with carbon content of more than 90 percent, has the characteristics of high temperature resistance, friction resistance, corrosion resistance, electric conduction, heat conduction and the like of common carbon materials, and also has the characteristics of softness, processability, light weight, large specific strength and the like, thereby being widely applied to the fields of military affairs, textiles, sports equipment, chemical engineering, medical instruments, mechanical processing and the like. After the polymer stock solution is solidified and formed into the birth fiber, the birth fiber is washed, drafted, dried, densified and oiled, and the filament bundle enters a steam drafting machine for drafting again so as to increase the orientation degree and the crystallinity degree of the filament bundle and enhance the physical and mechanical properties of the filament bundle.
Therefore, steam drafting is a very critical link in the carbon fiber production process. However, the existing steam drafting equipment has the problems of unstable operation, poor sealing property, large fluctuation of steam and temperature in the equipment, insufficient holding force in the drafting, easy occurrence of broken filament problem, low production efficiency and the like, thereby causing the poor physical property of the produced carbon fiber.
Disclosure of Invention
In order to solve the technical problems of small holding force of carbon fiber steam drafting, unstable drafting environment, high broken filament rate and the like in the prior art, the invention provides an M-shaped hot drafting device for producing carbon fiber precursors, which adopts the following technical scheme:
an M-shaped hot drafting device for producing carbon fiber precursors is characterized by comprising a solvent tank 2 and a drafting box 1 communicated with the solvent tank 2;
the drawing box 1 comprises a plurality of groups of holding roller sets and a spray pipe 12;
each group of holding roller sets comprises an upper layer, a middle layer and a lower layer of holding rollers 11 which are distributed in an M shape;
the distance between the axis of the middle layer holding roller 11 and the axes of the adjacent upper layer holding roller 11 and the lower layer holding roller 11 in the horizontal direction is smaller than the diameter of the adjacent two holding rollers 11;
the bottom of the solvent tank 2 is provided with a heating pipe 21, the upper part of the solvent tank 2 is provided with a sealing cover, and sealing devices are arranged outside the outlet and the inlet of the fiber tows 7
The rotational speed of the holding roller 11 in the drawing box 1 is gradually increased in the direction of movement of the fiber tow 7.
Preferably, the shower pipe 12 is positioned outside the wrap angle of the upper and middle layer grip rollers 11.
Preferably, 2-4 groups of holding roller sets are arranged in the drafting box 1.
More preferably, each set of the grip rollers in the draft box 1 is composed of five grip rollers, wherein the upper and lower layers are two grip rollers, and the middle layer is one grip roller.
More preferably, at least one holding roller 11 in each group of the drafting boxes 1 is a power roller; and a power shaft of the power roller is connected with a gear box 4 positioned on the outer side of the drafting box 1, the gear box 4 is connected with a power device 5, and the power device 5 is connected with a control device 6.
More preferably, a sensor 14 is arranged in the drafting box 1 corresponding to the upper, middle and lower layers of holding rollers.
More preferably, said sensor 14 is interlocked with the control device 6.
Preferably, the solvent tank 2 is provided with a solvent outlet at the leading-in end of the fiber tows 7 and a solvent inlet at the leading-out end of the fiber tows 7; a heating pipe 21 is arranged at the bottom of the solvent tank 2; a heating control valve 23 interlocked with the control device 6 is arranged at the inlet of the heating pipe 21; and a solvent control valve 24 interlocked with the control device 6 is arranged outside the solvent inlet.
Preferably, a cavity for circulating the heat-conducting medium is arranged inside the holding roller 11.
Preferably, an aluminum silicate cotton heat insulation layer with the thickness of 100mm is arranged in the drafting box 1.
Compared with the prior art, the invention has the following beneficial effects:
according to the hot drafting device provided by the invention, five holding rollers are arranged in the drafting box, and through setting the positions of the holding rollers, the wrap angle of the fiber tows is greatly increased, the contact between the tows and the holding rollers is increased, and the broken filament rate is effectively reduced. Meanwhile, the holding force of the fiber tows is effectively increased, and the drafting multiple of the fiber tows is provided.
The hot drafting device provided by the invention can effectively keep the stability of environmental conditions such as temperature, humidity and the like in equipment, and greatly reduce the influence of temperature and humidity fluctuation in the drafting process on fiber tows.
Drawings
FIG. 1 is a schematic view showing the structure of an M-type steam drawing device in a preferred embodiment of the present invention.
FIG. 2 is a schematic side view of a steam drawing device of M type in a preferred embodiment of the present invention.
FIG. 3 is a schematic front view of the drafting box in a preferred embodiment of the present invention.
In the figure: 1, a drafting box; 2, a solvent tank; 3, a guide roller; 4, a gear box; 5, a power device; 6, a control device; 7, fiber tows; 11, a grip roller; 12, a spray pipe; 13, a box door; 14, a sensor; 15, a baffle plate; 21, heating a pipe; 22, a sealing cover; 23, heating the control valve; 24, a solvent control valve; 121, a main tube; 122, a spray head.
Detailed Description
The present invention will be described in further detail with reference to the attached drawings, but the following detailed description is not to be construed as limiting the invention.
FIG. 1 is a schematic view showing the structure of an M-type steam drawing device in a preferred embodiment of the present invention. FIG. 2 is a schematic side view of a M-type steam drawing device. Fig. 3 is a schematic front view of the drafting box. The dotted line position is the solvent level, the arrow a direction is the advancing direction of the fiber tow 7, and the arrow B is the flow direction of the solvent.
As can be seen from fig. 1 to 3, the steam drawing device is composed of a drawing box 1, a solvent tank 2, a guide roller 3, a gear box 4, a power device 5 and a control device 6. Wherein, be equipped with two sets of holding roller sets in the draft box 1, every group holds the roller set and is equipped with five holding rollers 11, and the well upper portion of two sets of holding roller sets is separated through the baffle 15 that is located draft box 1 middle part. The five grip rollers 11 in each group are arranged in three layers, with two upper layers, one middle layer, and two lower layers. The distance between the axis centers of the middle holding roller 11 and the two adjacent holding rollers 11 in the horizontal direction is smaller than the diameter of the holding roller 11, so that each holding roller 11 has a larger wrap angle. The fiber silk fibroin 7 enters through the lower holding roller 11, sequentially bypasses the upper holding roller, the middle holding roller, the upper holding roller and the lower holding roller, and is led out, and the whole body is M-shaped. And a spray pipe 12 with a spray head facing the holding roller 11 is arranged at the wrap angle of the upper holding roller. Meanwhile, a spraying pipe is also arranged at the wrap angle of the middle holding roller 11, and the spraying pipe is directed to the wrap angle of the holding roller 11. Each holding roller is a hot roller, and a cavity (not shown) for steam or heat conducting oil to flow through is arranged in the holding roller and is communicated with an external heat source. Wherein, the middle holding roller 11 positioned in the middle of each group of holding roller sets is a driving roller. The rotating shaft of the holding roller is connected with a gear box 4, the gear box 4 is connected with a power device 5, and the power device 5 can adopt a motor. The power device 5 is connected with the control device 6 to realize the interlocking control of the rotating speed of the active holding roller 11. The spray pipe 12 is provided with a main pipe 121 connected to a container or pipe for containing a solvent, and spray heads 122 linearly arranged along the axial direction of the main pipe 121. The direction in which the nozzle 122 is directed is the position in which the holding roller 11 wraps the fiber tow 7. The spray head 12 corresponding to the upper layer holding roller 11 points downwards or obliquely downwards to the holding roller, and the spray head corresponding to the middle layer holding roller points upwards to the holding roller.
And sensors 14 for monitoring temperature and pressure are correspondingly arranged at positions corresponding to the upper, middle and lower layers of holding rollers in each group of holding roller groups. The sensor 14 is interlocked with the control device 6 to collect temperature and pressure information inside the steam draft box 1. A box door 13 is provided at the front of the draft box 1 to facilitate maintenance. The whole drafting box 1 is provided with a heat-insulating layer to prevent high temperature in the drafting box 1 from leaking.
The advancing direction of the fiber tows 7 is from right to left as shown by an arrow A, and the rotating speed of the right holding roller group is smaller than that of the left holding roller group, so that the fiber tows 7 are stretched. And a baffle 15 inserted into the liquid level is arranged between the two holding roller groups to reduce the fluctuation of the solvent system caused by the different rotating speeds of the holding rollers 11. The entire draw box 1 can be fixed by brackets on the rectangular top, on the wall or in the lower solvent tank 2.
Guide rollers 3 for guiding the fiber tow 7 are provided at both ends of the solvent tank 2. The bottom of the solvent tank 2 is provided with a heating pipe 21, and the heating pipe 21 can adopt a steam pipeline or an electric heating coil. A heating control valve 23 interlocked with the control device 6 is provided at the inlet end of the heating pipe 21 to control the temperature of the solvent in the solvent tank 2. Meanwhile, a solvent outlet is arranged at the leading-in end (right end) of the fiber silk fibroin 7, and a solvent inlet is arranged at the leading-out end of the fiber silk fibroin 7, so that the moving direction of the fiber silk fibroin 7 is opposite to the flowing direction of the solvent. A solvent control valve 24 interlocked with the control device 6 is provided outside the solvent inlet port to control the volume and flow rate of the solvent fed into the solvent tank 2.
In the using process, the temperature in the steam drafting box 1 can be controlled by the heating pipe and the holding roller 11 in a combined mode, and the pressure in the box body is increased by spraying solvent steam or liquid steam into the steam drafting box 1. The temperature and pressure information inside the draft box 1 can be fed back to the control device 6 through the sensor 14, thereby realizing the interlocking control of the temperature and pressure inside the draft box.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. An M-shaped hot drawing device for producing carbon fiber precursors is characterized by comprising a solvent tank (2) and a drawing box (1) communicated with the solvent tank (2);
the drafting box (1) comprises a plurality of groups of holding roller sets and spraying pipes (12), the spraying pipes (12) are positioned on the outer sides of wrap angles of the holding rollers (11) on the upper layer and the middle layer, and each spraying pipe is provided with a main pipe connected with a container for containing a solvent and spray heads linearly distributed along the axial direction of the main pipe;
each group of holding roller sets comprises an upper layer, a middle layer and a lower layer of holding rollers (11) which are distributed in an M shape, each holding roller (11) is a hot roller, and a cavity for heat-conducting medium to circulate is formed in the holding roller;
the distance between the axis of the holding roller (11) at the middle layer and the axes of the holding rollers (11) at the adjacent upper layer and lower layer in the horizontal direction is smaller than the diameter of the two adjacent holding rollers (11);
a heating pipe (21) is arranged at the bottom of the solvent tank (2), a sealing cover is arranged at the upper part of the solvent tank (2), and sealing devices are arranged outside the outlet and the inlet of the fiber tows (7);
along the moving direction of the fiber tows (7), the rotating speed of a holding roller (11) in the drafting box (1) is gradually increased; a baffle (15) inserted below the liquid level is arranged between the two holding roller sets;
each group of holding roller set in the drafting box (1) consists of five holding rollers, wherein the upper layer and the lower layer are two holding rollers, and the middle layer is one holding roller.
2. The M-type hot drawing device for carbon fiber precursor production according to claim 1, wherein 2-4 holding roller sets are arranged in the drawing box (1).
3. The hot drawing device of M type for carbon fiber precursor production according to claim 2, wherein at least one holding roller (11) in the drawing box (1) is a power roller; the power shaft of the power roller is connected with a gear box (4) positioned on the outer side of the drafting box (1), the gear box (4) is connected with a power device (5), and the power device (5) is connected with a control device (6).
4. The M-type hot drawing device for carbon fiber precursor production according to claim 3, wherein a sensor (14) is arranged in the drawing box (1) corresponding to the upper, middle and lower holding rollers.
5. M-type hot-drawing device for carbon fiber strand production according to claim 4, characterized in that said sensor (14) is interlocked with the control device (6).
6. The M-type hot-drawing device for carbon fiber precursor production according to claim 3, wherein the solvent tank (2) is provided with a solvent outlet at an inlet end of the fiber tow (7) and a solvent inlet at an outlet end of the fiber tow (7); a heating pipe (21) is arranged at the bottom of the solvent tank (2); a heating control valve (23) interlocked with the control device (6) is arranged at the inlet of the heating pipe (21); and a solvent control valve (24) interlocked with the control device (6) is arranged outside the solvent inlet.
7. The M-type hot drawing device for carbon fiber precursor production according to claim 1, wherein the drawing box (1) is provided with a 100mm thick insulating layer of aluminum silicate wool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611175033.5A CN106757435B (en) | 2016-12-19 | 2016-12-19 | M-shaped hot drafting device for carbon fiber precursor production |
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| CN201611175033.5A CN106757435B (en) | 2016-12-19 | 2016-12-19 | M-shaped hot drafting device for carbon fiber precursor production |
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| CN106757435A CN106757435A (en) | 2017-05-31 |
| CN106757435B true CN106757435B (en) | 2020-08-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108048923B (en) * | 2018-01-29 | 2024-02-09 | 浙江龙赛尔纤维科技有限公司 | Sealed cabin for loycell filament drawing washing machine |
| JP7063639B2 (en) * | 2018-01-29 | 2022-05-09 | Ｔｍｔマシナリー株式会社 | Spinning and stretching equipment |
| CN110725039A (en) * | 2018-07-17 | 2020-01-24 | 北京同益中新材料科技股份有限公司 | Polyethylene fiber drafting equipment |
| CN109234883A (en) * | 2018-09-21 | 2019-01-18 | 东华大学 | 6 high strength yarn multistage drafting device and method of polyamide fibre |
| CN113445139B (en) * | 2021-08-27 | 2022-12-23 | 浙江佳燕日用品有限公司 | Manufacturing device of sterilizing and inflammation diminishing baby wet tissue |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011202A (en) * | 2010-12-03 | 2011-04-13 | 西安航科等离子体科技有限公司 | Rinsing and hot drawing device for fibre tow spinning |
| CN104178790A (en) * | 2014-08-19 | 2014-12-03 | 中复神鹰碳纤维有限责任公司 | Carbon fiber surface treatment method and treatment device |
| CN205133820U (en) * | 2015-11-12 | 2016-04-06 | 荣成复合材料有限公司 | Carbon fiber processing is with draft machine |
| CN205133827U (en) * | 2015-11-12 | 2016-04-06 | 荣成复合材料有限公司 | Carbon fiber drawing machine |
| CN105568431A (en) * | 2014-10-15 | 2016-05-11 | 西安艾菲尔德复合材料科技有限公司 | Carbon nanofiber composite material and preparing method thereof |
| CN105568432A (en) * | 2014-10-14 | 2016-05-11 | 中国石油化工股份有限公司 | Device and method for producing low-dispersion coefficient carbon fibers |
| CN105624812A (en) * | 2014-10-27 | 2016-06-01 | 中国石油化工股份有限公司 | Method for hot water drawing polyacrylonitrile fibers |
| CN206467341U (en) * | 2016-12-19 | 2017-09-05 | 哈尔滨天顺化工科技开发有限公司 | A kind of M type hot gas spring devices produced for carbon fibre precursor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63275718A (en) * | 1987-05-06 | 1988-11-14 | Mitsubishi Rayon Co Ltd | Production of high-tenacity carbon fiber |
| JP2004060069A (en) * | 2002-07-25 | 2004-02-26 | Toho Tenax Co Ltd | Polyacrylonitrile-based carbon fiber, and method for producing the same |
-
2016
- 2016-12-19 CN CN201611175033.5A patent/CN106757435B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011202A (en) * | 2010-12-03 | 2011-04-13 | 西安航科等离子体科技有限公司 | Rinsing and hot drawing device for fibre tow spinning |
| CN104178790A (en) * | 2014-08-19 | 2014-12-03 | 中复神鹰碳纤维有限责任公司 | Carbon fiber surface treatment method and treatment device |
| CN105568432A (en) * | 2014-10-14 | 2016-05-11 | 中国石油化工股份有限公司 | Device and method for producing low-dispersion coefficient carbon fibers |
| CN105568431A (en) * | 2014-10-15 | 2016-05-11 | 西安艾菲尔德复合材料科技有限公司 | Carbon nanofiber composite material and preparing method thereof |
| CN105624812A (en) * | 2014-10-27 | 2016-06-01 | 中国石油化工股份有限公司 | Method for hot water drawing polyacrylonitrile fibers |
| CN205133820U (en) * | 2015-11-12 | 2016-04-06 | 荣成复合材料有限公司 | Carbon fiber processing is with draft machine |
| CN205133827U (en) * | 2015-11-12 | 2016-04-06 | 荣成复合材料有限公司 | Carbon fiber drawing machine |
| CN206467341U (en) * | 2016-12-19 | 2017-09-05 | 哈尔滨天顺化工科技开发有限公司 | A kind of M type hot gas spring devices produced for carbon fibre precursor |
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