CN112626659A - Production method of low-strength low-elongation semi-dull chinlon 6FDY crystal yarn - Google Patents

Production method of low-strength low-elongation semi-dull chinlon 6FDY crystal yarn Download PDF

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Publication number
CN112626659A
CN112626659A CN202011449085.3A CN202011449085A CN112626659A CN 112626659 A CN112626659 A CN 112626659A CN 202011449085 A CN202011449085 A CN 202011449085A CN 112626659 A CN112626659 A CN 112626659A
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crystal
image information
low
yarns
dull
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CN202011449085.3A
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Inventor
龚剑兵
刘蓉
聂善龙
章再稳
张国伟
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JIANGSU WENFENG CHEMICAL FIBER GROUP CO LTD
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JIANGSU WENFENG CHEMICAL FIBER GROUP CO LTD
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Priority to CN202011449085.3A priority Critical patent/CN112626659A/en
Priority to PCT/CN2021/072462 priority patent/WO2022121087A1/en
Publication of CN112626659A publication Critical patent/CN112626659A/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • 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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The invention relates to a production method of low-strength low-elongation semi-dull chinlon 6FDY crystal yarn, which comprises the following steps: cooling and solidifying the melt extruded from the spinneret plate into nascent fiber by a cold air device of a side blowing wire window; further cooling the nascent fiber in a channel, and pre-networking the nascent fiber into filament bundles through oiling by an oil nozzle and a pre-networking device; the tows form certain stretching through a godet GR1 and a godet GR2 which are integrated on a winding machine, and then are controlled to the required winding tension through a godet GR 3; and finally, after the yarn bundle is added with the net by a net device, guiding the yarn bundle into a winding machine for package forming, and winding to obtain a finished product spinning cake, namely the low-strength low-elongation semi-dull nylon 6FDY crystal yarn. The product processed by the invention is between dazzling bright and dark full dull, and can effectively realize the novel nylon fiber with smooth hand feeling, stiff suspension, uniform step holes, clear cloth holes, transparency, air permeability, moderate brightness, rich elasticity, softness, comfortable wearing and other style characteristics of the crystal yarn fabric.

Description

Production method of low-strength low-elongation semi-dull chinlon 6FDY crystal yarn
Technical Field
The invention relates to the technical field of chemical fiber nylon filament production, in particular to a production method of low-strength low-elongation semi-dull nylon 6FDY crystal yarn.
Background
Crystal yarn (english name: voile or crystal yarn), which is often referred to by the skilled person as glass yarn or voile (voile). The early crystal yarn raw material is a fabric made of pure cotton or partial polyester filament yarn, and is a thin and transparent fabric woven by using a plain weave structure. With the continuous pursuit of high-quality life of people, more and more crystal yarn fabrics use part of nylon filaments as raw materials to improve the grade and the wearing comfort degree of the fabrics.
The chinlon filament is mainly applied to the crystal yarn fabric by the excellent performances of wear resistance, easy dyeing, softness, good moisture absorption and good drapability, so that the crystal yarn fabric has the advantages of thin and thin texture, thin and sparse density, smooth hand feeling, stiff draping, uniform step holes, clear cloth holes, transparency, good air permeability, high elasticity, comfortable wearing and the like. The crystal yarn with a certain nylon content is mainly used for manufacturing summer shirt skirt and pyjamas, and can also be used for manufacturing headkerchief, face yarn, base cloth for embroidery, table lamp shade, curtain and other clothing materials.
The chinlon filament used for the crystal yarn generally appears with the full-dull characteristic, which opens up a certain market at the initial stage of the formation of the crystal yarn, but the original full-dull crystal yarn is not suitable for the requirements of people on thousands of postures of clothes as people pursue the gorgeous, bright, noble, fashionable and high-quality living concepts. In particular, young people are more expecting to have a flower and branch exhibition without glaring and dark or dull light.
Disclosure of Invention
In order to solve the technical problems, the invention provides a production method of low-strength low-elongation semi-dull chinlon 6FDY crystal yarn, a processed product is between dazzling bright and dark full dull, and novel chinlon fibers with characteristics of smooth hand feeling, stiff suspension, uniform step holes, clear cloth holes, transparency, ventilation, brightness, elasticity, comfort in wearing and the like of a crystal yarn fabric can be effectively realized, and the technical scheme of the production method of the low-strength low-elongation semi-dull chinlon 6FDY crystal yarn provided by the invention is as follows:
the embodiment of the invention discloses a production method of low-strength low-elongation half-dull chinlon 6FDY crystal yarn, which comprises the following steps:
taking a semi-dull nylon-6 slice as a raw material, adding the slice into a dry slice bin protected by nitrogen, and falling into a feeding section of a spinning screw extruder through self weight;
the screw extruder is used for heating and melting the semi-dull nylon-6 slices into a melt at the set temperature of each zone of the screw under the rotation of a machine head motor, and the melt is rotationally propelled towards the tail of the machine;
the melt is pushed to the tail and then is pressed into a spinning manifold downwards through a tail flange and a bent pipe;
the melt fed into the spinning box is metered by metering pumps distributed to each spinning position, filtered and pressurized by a spinning component at each spinning position, and then extruded by a spinneret plate at the bottom of the component;
cooling and solidifying the melt extruded from the spinneret plate into nascent fiber by a cold air device of a side blowing wire window;
further cooling the nascent fiber in a channel, and pre-networking the nascent fiber into filament bundles through oiling by an oil nozzle and a pre-networking device;
the tows form certain stretching through a godet GR1 and a godet GR2 which are integrated on a winding machine, and then are controlled to the required winding tension through a godet GR 3;
and finally, after the yarn bundle is added with the net by a net device, guiding the yarn bundle into a winding machine for package forming, and winding to obtain a finished product spinning cake, namely the low-strength low-elongation semi-dull nylon 6FDY crystal yarn.
In any of the above schemes, preferably, the positive pressure range of the nitrogen protection in the dry slice bin is: 0.1bar-0.3bar, the nitrogen consumption of each bin is 0.25m3H, purity: 99.9 percent.
In any of the above schemes, the temperature set in each zone of the screw extruder is controlled between 250 ℃ and 265 ℃, and the spinning temperature in the spinning box body is controlled between 251 ℃ and 253 ℃.
In any of the above schemes, preferably, the spinneret orifice of the spinneret plate is in a shape of a line, the arrangement shape of the spinneret orifice is in a shape of a dislocation type, and the length-width ratio of the line is (12-16): 1.
in any scheme, the preferable air speed of the cross air blow is 0.50-0.60 m/s, the temperature is 16-18 ℃, the humidity RH is 85-95%, the air blow pressure is 500-600 Pa, and the distance between the upper oiling nozzle and the spinneret plate is more than or equal to 500 mm.
In any of the schemes, the spinning winding speed is 4600m/min, the speed of a godet GR1 is 4200m/min-3300m/min, the speed of a godet GR2 is 4600m/min-4650m/min, the speed of the godet GR3 is 4590m/min-4640m/min, the network pressure is 0.08MPa-0.25MPa, and the speed difference between the godets GR3 and GR2 is 5m/min-15 m/min; the temperature of the godet GR2 is between 150 ℃ and 170 ℃.
In any of the above schemes, the speed ratio of the godet GR2 to the godet GR1 is preferably divided into three:
combine one 4625 m/min: 4000m/min, corresponding to a draw ratio of 1.16;
combination two 4625 m/min: 3750m/min, corresponding to a draw ratio of 1.23;
combination III is at 4625 m/min: 3300m/min, corresponding to a draw ratio of 1.40.
In any of the above schemes, the preferable production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn is as follows: the method also comprises a method for inspecting the low-strength low-elongation half-dull chinlon 6FDY crystal yarn, and the method comprises the following steps:
acquiring image information of crystal yarns in real time;
analyzing and comparing the acquired image information of the crystal yarns, if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, sending an alarm and a stop command, and if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns, continuing working.
In any of the above schemes, the preferable production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn is as follows: the method further comprises the steps of storing the acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
In any of the above schemes, the preferable production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn is as follows: still include the verifying attachment to low strong low half extinction polyamide fibre 6FDY crystal yarn that stretches, verifying attachment includes:
the acquisition module is used for acquiring image information of the crystal yarns in real time;
the analysis and judgment module is used for analyzing and comparing the acquired image information of the crystal yarns, sending an alarm and stop instruction if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, and continuing working if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns;
and the storage and verification module is used for storing the acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
Compared with the prior art, the low-strength low-elongation half-dull chinlon 6FDY crystal yarn production method has the advantages that the processed product is between dazzling bright and dark full dull, and the novel chinlon fiber with smooth hand feeling, stiff suspension, uniform step holes, clear cloth holes, transparency, air permeability, brightness, elasticity, wearing comfort and other style characteristics of the crystal yarn fabric can be effectively realized.
Drawings
The drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
FIG. 1 is a schematic diagram of a production method of low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to the invention.
FIG. 2 is a flow chart of a detection method in the production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn.
FIG. 3 is a schematic diagram of a testing device in the production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn.
Reference numerals:
1. a first side panel; 2. a second side panel; 3. a first support assembly; 31. a first support bar; 32. a stop lever; 33. a first cylinder; 34. a second roller shaft; 4. a first roller shaft; 5. an upper hot air pipeline; 6. an upper roll shaft; 7. a lower roll shaft; 9. a second support assembly; 91. a second support bar; 92. a third roller shaft; 93. a card slot; 10. a first drive assembly; 101. a first cylinder; 102. a connecting rod; 11. a conveyor chain; 12. a second driving section; 121. a second motor; 122. a second speed reducer; 13. a lower hot air pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in figure 1, the embodiment of the invention discloses a preparation method of a production method of low-strength low-elongation half-dull chinlon 6FDY crystal yarn, which comprises the following steps:
step 1: the semi-dull nylon-6 chip is added into a dry chip bin with nitrogen protection, falls into a feeding section of a spinning screw extruder through self weight, and is protected by nitrogen in the dry chip binThe positive pressure is: 0.1bar, nitrogen consumption per silo 0.25m3H, purity: 99.9 percent;
step 2: the screw extruder is used for heating and melting the semi-dull nylon-6 slices into a melt at the set temperature of each zone of the screw under the rotation of a machine head motor, and the melt is rotationally propelled towards the tail of the machine;
and step 3: the melt is pushed to the tail and then is downwards pressed into a spinning box body through a tail flange and a bent pipe, the set temperature of each area of a screw extruder is controlled at 250 ℃, and the spinning temperature in the spinning box body is controlled at 251 ℃;
and 4, step 4: the melt fed into the spinning box is metered by metering pumps distributed to spinning positions, filtered and pressurized by spinning components of the spinning positions, and extruded by a spinneret plate at the bottom of the components, the spinneret orifice of the spinneret plate is in a linear shape, the arrangement shape of the spinneret plate is in a dislocation shape, and the length-width ratio of the linear shape is 12: 1;
and 5: cooling and solidifying the melt extruded from the spinneret plate into nascent fiber by a cold air device of a side blowing silk window, wherein the side blowing air speed is 0.50m/s, the temperature is 16 ℃, the humidity is RH 85%, the air supply pressure is 500Pa, and the distance between an oil feeding nozzle and the spinneret plate is 500 mm;
step 6: further cooling the nascent fiber in a channel, and pre-networking the nascent fiber into filament bundles through oiling by an oil nozzle and a pre-networking device;
and 7: the tows form certain stretching through a godet GR1 and a godet GR2 which are integrated on a winding machine, and then are controlled to the required winding tension through a godet GR 3;
and 8: finally, after being networked by a networking device, the tows are guided into a winding machine for package forming, and the yarns are wound into finished yarn cakes, namely the low-strength low-elongation semi-dull nylon 6FDY crystal yarns, wherein the spinning winding speed is 4600m/min, the speed of a godet GR1 is 4200m/min, the speed of a godet GR2 is 4600m/min, the speed of a godet GR3 is 4590m/min, the network pressure is 0.08MPa, and the speed difference between the godet GR3 and the godet GR2 is 5 m/min; the temperature of the godet GR2 is 150 ℃, and the speed ratio of the godet GR2 to the godet GR1 is divided into three parts: combine one 4625 m/min: 4000m/min, corresponding to a draw ratio of 1.16; combination two 4625 m/min: 3750m/min, corresponding to a draw ratio of 1.23; combination III is at 4625 m/min: 3300m/min, corresponding to a draw ratio of 1.40;
and step 9: the method for inspecting the low-strength low-elongation half-dull chinlon 6FDY crystal yarn comprises the following steps (as shown in figure 2):
acquiring image information of crystal yarns in real time;
analyzing and comparing the acquired image information of the crystal yarns, if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, sending an alarm and stopping instruction, and if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns, continuing working;
step 10: the method comprises the steps of storing acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
As shown in FIG. 3, in the invention, the production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn comprises the following steps: still include the verifying attachment to low strong low half extinction polyamide fibre 6FDY crystal yarn that stretches, verifying attachment includes:
the acquisition module is used for acquiring image information of the crystal yarns in real time;
the analysis and judgment module is used for analyzing and comparing the acquired image information of the crystal yarns, sending an alarm and stop instruction if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, and continuing working if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns;
and the storage and verification module is used for storing the acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
Example 2
As shown in figure 1, the embodiment of the invention discloses a preparation method of a production method of low-strength low-elongation half-dull chinlon 6FDY crystal yarn, which comprises the following steps:
step 1: the semi-dull nylon 6 slice is used as a raw material, the slice is added into a dry slice bin with nitrogen protection, the slice falls into a feeding section of a spinning screw extruder through self weight, and the positive pressure range of the nitrogen protection in the dry slice bin is as follows: 0.2bar, nitrogen consumption per silo 0.25m3H, purity: 99.9 percent;
step 2: the screw extruder is used for heating and melting the semi-dull nylon-6 slices into a melt at the set temperature of each zone of the screw under the rotation of a machine head motor, and the melt is rotationally propelled towards the tail of the machine;
and step 3: the melt is pushed to the tail and then is downwards pressed into a spinning box body through a tail flange and a bent pipe, the set temperature of each area of a screw extruder is controlled to be 260 ℃, and the spinning temperature in the spinning box body is controlled to be 252 ℃;
and 4, step 4: the melt fed into the spinning box is metered by metering pumps distributed to spinning positions, filtered and pressurized by spinning components of the spinning positions, and extruded by a spinneret plate at the bottom of the components, the spinneret orifice of the spinneret plate is in a linear shape, the arrangement shape of the spinneret plate is in a dislocation shape, and the length-width ratio of the linear shape is 15: 1;
and 5: cooling and solidifying the melt extruded out of the spinneret plate into nascent fibers by a cold air device of a side blowing silk window, wherein the side blowing air speed is 0.55m/s, the temperature is 17 ℃, the humidity is RH 90%, the air supply pressure is 550Pa, and the distance between an oil applying nozzle and the spinneret plate is 600 mm;
step 6: further cooling the nascent fiber in a channel, and pre-networking the nascent fiber into filament bundles through oiling by an oil nozzle and a pre-networking device;
and 7: the tows form certain stretching through a godet GR1 and a godet GR2 which are integrated on a winding machine, and then are controlled to the required winding tension through a godet GR 3;
and 8: finally, after a networ is added, the tows are led into a winding machine for package forming, and finished product spinning cakes are formed by winding, namely, low-strength low-elongation semi-dull nylon 6FDY crystal yarns, wherein the spinning winding speed is 4600m/min, the speed of a godet GR1 is 4000m/min, the speed of a godet GR2 is 4630m/min, the speed of the godet GR3 is 4600m/min, the network pressure is 0.1MPa, and the speed difference between the godet GR3 and the godet GR2 is 10 m/min; the temperature of the godet GR2 is 160 ℃, and the speed ratio of the godet GR2 to the godet GR1 is divided into three parts: combine one 4625 m/min: 4000m/min, corresponding to a draw ratio of 1.16; combination two 4625 m/min: 3750m/min, corresponding to a draw ratio of 1.23; combination III is at 4625 m/min: 3300m/min, corresponding to a draw ratio of 1.40;
and step 9: the method for inspecting the low-strength low-elongation half-dull chinlon 6FDY crystal yarn comprises the following steps (as shown in figure 2):
acquiring image information of crystal yarns in real time;
analyzing and comparing the acquired image information of the crystal yarns, if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, sending an alarm and stopping instruction, and if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns, continuing working;
step 10: the method comprises the steps of storing acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
As shown in FIG. 3, in the invention, the production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn comprises the following steps: still include the verifying attachment to low strong low half extinction polyamide fibre 6FDY crystal yarn that stretches, verifying attachment includes:
the acquisition module is used for acquiring image information of the crystal yarns in real time;
the analysis and judgment module is used for analyzing and comparing the acquired image information of the crystal yarns, sending an alarm and stop instruction if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, and continuing working if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns;
and the storage and verification module is used for storing the acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
Example 3
As shown in figure 1, the embodiment of the invention discloses a preparation method of a production method of low-strength low-elongation half-dull chinlon 6FDY crystal yarn, which comprises the following steps:
step 1: use 6 sections of semi-dull polyamide fibre as the raw materials, add this section to the dry section feed bin that has nitrogen protection in, fall into the feeding section of spinning screw extruder through the dead weight, the malleation of nitrogen protection in the dry section feed bin is: 0.3bar, the nitrogen consumption per silo is 0.25m3H, purity: 99.9 percent;
step 2: the screw extruder is used for heating and melting the semi-dull nylon-6 slices into a melt at the set temperature of each zone of the screw under the rotation of a machine head motor, and the melt is rotationally propelled towards the tail of the machine;
and step 3: the melt is pushed to the tail and then is downwards pressed into a spinning box body through a tail flange and a bent pipe, the set temperature of each area of a screw extruder is controlled at 265 ℃, and the spinning temperature in the spinning box body is controlled at 253 ℃;
and 4, step 4: the melt fed into the spinning box is metered by metering pumps distributed to spinning positions, filtered and pressurized by spinning components of the spinning positions, and extruded by a spinneret plate at the bottom of the components, the spinneret orifice of the spinneret plate is in a linear shape, the arrangement shape of the spinneret plate is in a dislocation shape, and the length-width ratio of the linear shape is 16: 1;
and 5: cooling and solidifying the melt extruded out of the spinneret plate into nascent fibers by a cold air device of a side blowing silk window, wherein the side blowing air speed is 0.60m/s, the temperature is 18 ℃, the humidity is RH 95%, the air supply pressure is 600Pa, and the distance between an oil feeding nozzle and the spinneret plate is 700 mm;
step 6: further cooling the nascent fiber in a channel, and pre-networking the nascent fiber into filament bundles through oiling by an oil nozzle and a pre-networking device;
and 7: the tows form certain stretching through a godet GR1 and a godet GR2 which are integrated on a winding machine, and then are controlled to the required winding tension through a godet GR 3;
and 8: finally, after a networker is added with a net, the tows are guided into a winding machine for package forming, and the yarns are wound to form finished yarn cakes, namely low-strength low-elongation semi-dull nylon 6FDY crystal yarns, wherein the spinning winding speed is 4600m/min, the speed of a godet GR1 is 3300m/min, the speed of a godet GR2 is 4650m/min, the speed of the godet GR3 is 4640m/min, the net pressure is 0.25MPa, and the speed difference between the godet GR3 and the godet GR2 is 15 m/min; the temperature of the godet GR2 is 170 ℃, and the speed ratio of the godet GR2 to the godet GR1 is divided into three parts: combine one 4625 m/min: 4000m/min, corresponding to a draw ratio of 1.16; combination two 4625 m/min: 3750m/min, corresponding to a draw ratio of 1.23; combination III is at 4625 m/min: 3300m/min, corresponding to a draw ratio of 1.40;
and step 9: the method for inspecting the low-strength low-elongation half-dull chinlon 6FDY crystal yarn comprises the following steps (as shown in figure 2):
acquiring image information of crystal yarns in real time;
analyzing and comparing the acquired image information of the crystal yarns, if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, sending an alarm and stopping instruction, and if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns, continuing working;
step 10: the method comprises the steps of storing acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
As shown in FIG. 3, in the invention, the production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn comprises the following steps: still include the verifying attachment to low strong low half extinction polyamide fibre 6FDY crystal yarn that stretches, verifying attachment includes:
the acquisition module is used for acquiring image information of the crystal yarns in real time;
the analysis and judgment module is used for analyzing and comparing the acquired image information of the crystal yarns, sending an alarm and stop instruction if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, and continuing working if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns;
and the storage and verification module is used for storing the acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
Compared with the prior art, the low-strength low-elongation half-dull chinlon 6FDY crystal yarn production method has the advantages that the processed product is between dazzling bright and dark full dull, and the novel chinlon fiber with smooth hand feeling, stiff suspension, uniform step holes, clear cloth holes, transparency, air permeability, brightness, elasticity, wearing comfort and other style characteristics of the crystal yarn fabric can be effectively realized.
By arranging the method for inspecting the low-strength low-elongation semi-dull chinlon 6FDY crystal yarn, the processed chinlon fiber can be inspected in real time, the quality of a product is ensured, and when the product has a quality problem, the machine can be stopped in time, so that the further loss of the product is avoided;
the image information of the crystal yarns is acquired and stored in real time, the image information of the crystal yarns is compared with the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier for verification, if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, an alarm and stop instruction is sent, if the image information of the crystal yarns acquired is matched with the image information of the crystal yarns set in advance, the crystal yarns continue to work, products after being checked can be further verified, and the quality of the products is guaranteed.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A production method of low-strength low-elongation semi-dull chinlon 6FDY crystal yarn is characterized by comprising the following steps: the method comprises the following steps:
taking a semi-dull nylon-6 slice as a raw material, adding the slice into a dry slice bin protected by nitrogen, and falling into a feeding section of a spinning screw extruder through self weight;
the screw extruder is used for heating and melting the semi-dull nylon-6 slices into a melt at the set temperature of each zone of the screw under the rotation of a machine head motor, and the melt is rotationally propelled towards the tail of the machine;
the melt is pushed to the tail and then is pressed into a spinning manifold downwards through a tail flange and a bent pipe;
the melt fed into the spinning box is metered by metering pumps distributed to each spinning position, filtered and pressurized by a spinning component at each spinning position, and then extruded by a spinneret plate at the bottom of the component;
cooling and solidifying the melt extruded from the spinneret plate into nascent fiber by a cold air device of a side blowing wire window;
further cooling the nascent fiber in a channel, and pre-networking the nascent fiber into filament bundles through oiling by an oil nozzle and a pre-networking device;
the tows form certain stretching through a godet GR1 and a godet GR2 which are integrated on a winding machine, and then are controlled to the required winding tension through a godet GR 3;
and finally, after the yarn bundle is added with the net by a net device, guiding the yarn bundle into a winding machine for package forming, and winding to obtain a finished product spinning cake, namely the low-strength low-elongation semi-dull nylon 6FDY crystal yarn.
2. The production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 1, characterized by comprising the following steps: the positive pressure range of the nitrogen protection in the dry slice bin is as follows: 0.1bar-0.3bar, the nitrogen consumption of each bin is 0.25m3H, purity: 99.9 percent.
3. The production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 2, characterized by comprising the following steps: the temperature of each zone of the screw extruder is controlled between 250 ℃ and 265 ℃, and the spinning temperature in the spinning box body is controlled between 251 ℃ and 253 ℃.
4. The production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 3, characterized by comprising the following steps: the spinneret orifice of the spinneret plate is in a shape of a straight line, the layout shape of the spinneret orifice on the spinneret plate is in a dislocation shape, and the length-width ratio of the straight line is (12-16): 1.
5. the production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 4, comprising the following steps of: the method is characterized in that: the air speed of the cross-blown air is between 0.50 and 0.60m/s, the temperature is between 16 and 18 ℃, the humidity RH is between 85 and 95 percent, the air supply pressure is between 500 and 600Pa, and the distance between the upper oiling nozzle and the spinning plate is more than or equal to 500 mm.
6. The production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 5, comprising the following steps of: the method is characterized in that: the spinning winding speed is 4600m/min, the speed of a godet GR1 is 4200m/min-3300m/min, the speed of a godet GR2 is 4600m/min-4650m/min, the speed of the godet GR3 is 4590m/min-4640m/min, the network pressure is 0.08MPa-0.25MPa, and the speed difference between the godet GR3 and the godet GR2 is 5m/min-15 m/min; the temperature of the godet GR2 is between 150 ℃ and 170 ℃.
7. The production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 6, comprising the following steps: the method is characterized in that: the speed ratio of the godet GR2 to the godet GR1 is divided into three parts:
combine one 4625 m/min: 4000m/min, corresponding to a draw ratio of 1.16;
combination two 4625 m/min: 3750m/min, corresponding to a draw ratio of 1.23;
combination III is at 4625 m/min: 3300m/min, corresponding to a draw ratio of 1.40.
8. The production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 7, which comprises the following steps: the method is characterized in that: the method also comprises a method for inspecting the low-strength low-elongation half-dull chinlon 6FDY crystal yarn, and the method comprises the following steps:
acquiring image information of crystal yarns in real time;
analyzing and comparing the acquired image information of the crystal yarns, if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, sending an alarm and a stop command, and if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns, continuing working.
9. The production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 8, comprising the following steps of: the method is characterized in that: the method further comprises the steps of storing the acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
10. The production method of the low-strength low-elongation half-dull chinlon 6FDY crystal yarn according to claim 9, comprising the following steps of: the method is characterized in that: still include the verifying attachment to low strong low half extinction polyamide fibre 6FDY crystal yarn that stretches, verifying attachment includes:
the acquisition module is used for acquiring image information of the crystal yarns in real time;
the analysis and judgment module is used for analyzing and comparing the acquired image information of the crystal yarns, sending an alarm and stop instruction if the acquired image information of the crystal yarns is not matched with the preset image information of the crystal yarns, and continuing working if the acquired image information of the crystal yarns is matched with the preset image information of the crystal yarns;
and the storage and verification module is used for storing the acquired image information of the crystal yarns in real time, comparing and verifying the image information of the crystal yarns acquired later according to the image information of the crystal yarns stored earlier, sending an alarm and stop instruction if the image information of the crystal yarns acquired later is not matched with the image information of the crystal yarns stored earlier, and continuing working if the image information of the crystal yarns acquired is matched with the preset image information of the crystal yarns.
CN202011449085.3A 2020-12-09 2020-12-09 Production method of low-strength low-elongation semi-dull chinlon 6FDY crystal yarn Withdrawn CN112626659A (en)

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JP4253049B2 (en) * 1997-11-26 2009-04-08 旭化成ケミカルズ株式会社 Heat-resistant polyamide fiber and method for producing the same
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CN107402222A (en) * 2017-09-07 2017-11-28 苏州艾乐蒙特机电科技有限公司 A kind of spinning equipment the end of a thread scanning software
CN111118638B (en) * 2020-01-10 2022-01-28 长乐力恒锦纶科技有限公司 Production method of chinlon 6FDY full-dull crystal yarn

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Application publication date: 20210409