CN116200879B - Yarn forming device and method for melt-blown fibers - Google Patents
Yarn forming device and method for melt-blown fibers Download PDFInfo
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- CN116200879B CN116200879B CN202310071746.0A CN202310071746A CN116200879B CN 116200879 B CN116200879 B CN 116200879B CN 202310071746 A CN202310071746 A CN 202310071746A CN 116200879 B CN116200879 B CN 116200879B
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- 239000000835 fiber Substances 0.000 title claims abstract description 206
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 38
- 238000007664 blowing Methods 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims description 31
- 239000000155 melt Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims 3
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000002657 fibrous material Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000009987 spinning Methods 0.000 description 11
- 239000002121 nanofiber Substances 0.000 description 6
- 206010020112 Hirsutism Diseases 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001523 electrospinning Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010040 friction spinning Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007378 ring spinning Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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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
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
-
- 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
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
本发明公开了一种熔喷纤维的成纱装置及方法，涉及熔喷纤维材料技术领域；熔喷纤维的成纱装置，包括熔喷装置，还包括接收装置、剥取装置、切割装置、分条器和加捻成纱装置；熔喷纤维的成纱方法，包括以下步骤：将喷出的熔喷纤维形成薄状纤维层，将薄状纤维层切割为薄状纤维条，将薄状纤维条包卷形成圆柱状纤维条，将圆柱状纤维条旋转加捻成纱线；本发明中装置及方法实现了对熔喷纤维纱的连续制备，原料适用范围广，设备操作简单。
The invention discloses a melt-blown fiber yarn-forming device and method, and relates to the technical field of melt-blown fiber materials; the melt-blown fiber yarn-forming device comprises a melt-blowing device, and also comprises a receiving device, a stripping device, a cutting device, a slitting device and a twisting yarn-forming device; the melt-blown fiber yarn-forming method comprises the following steps: forming a thin fiber layer from the sprayed melt-blown fibers, cutting the thin fiber layer into thin fiber strips, wrapping the thin fiber strips into cylindrical fiber strips, and rotating and twisting the cylindrical fiber strips into yarns; the device and method of the invention realize continuous preparation of melt-blown fiber yarns, have a wide range of raw material applications, and are simple to operate.
Description
Technical Field
The invention belongs to the field of melt-blown fiber materials, and particularly relates to a yarn forming device and method for melt-blown fibers.
Background
The melt-blown fiber has extremely large length-diameter ratio, and the melt-blown fiber is processed into a product with the advantages of high specific surface area, high porosity, unique capillary structure and the like, and is widely applied to the fields of filtration, antibiosis, adsorption, biomedical, intelligent textiles and the like.
So far, the micro-nano fiber exists in an unordered fiber felt form, and the application of the micro-nano fiber is severely limited because of the defects of single fiber form, poor orientation degree, low mechanical property and the like, which cause the difficulty of secondary processing. If the micro-nano fiber can be processed into yarns and fabrics, the application range of the micro-nano fiber can be greatly widened. The patent CN 106835417 describes a spinning method of attaching micro-nano fibers on the surface of a core yarn to make a core yarn. Patent CN 106637542 describes a combination of a melt blowing device and a conventional spinning device, and the micro-nano fiber felt is transported as slivers to the conventional spinning device to twist into yarn, such as a roving frame, a ring spinning frame, a friction spinning machine, etc. The modification of an electrospinning apparatus to spin twist an electrospun web into a single yarn is described in patent CN 106555276. The method has the defects of low yarn yield, incapability of large-scale production and the like. In order to solve the problems, the invention provides a device and a method for continuously spinning superfine fiber yarns in batches.
Disclosure of Invention
In order to achieve the above purpose, the invention adopts the following technical scheme:
The yarn forming device for melt-blown fibers comprises a melt-blowing device, a receiving device, a stripping device, a cutting device, a sliver separator and a twisting yarn forming device;
the melt-blowing device is used for blowing out melt-blown fibers;
the receiving device is arranged at one side of the melt-blowing device and is used for receiving melt-blown fibers sprayed by the melt-blowing device to be adsorbed on the surface of the melt-blown fibers to form a continuous thin fiber layer;
The stripping device is arranged below the receiving device and is used for stripping the continuous thin fiber layer from the surface of the receiving device;
the cutting device is arranged below the stripping device and is used for receiving the continuous thin fiber layer and cutting the continuous thin fiber layer into thin fiber strips;
the slitting device is arranged below the cutting device and is used for receiving the thin fiber strips and outputting the thin fiber strips into cylindrical fiber strips in a wrapping mode;
The twisting yarn forming device is arranged below the sliver separator and is used for driving the cylindrical fiber sliver to rotate and twist into yarn for storage.
Preferably, the receiving device comprises a cylindrical receiving roller, the surface of the receiving roller is provided with uniformly arranged holes, negative pressure is generated inside the receiving roller, and negative pressure adsorption is formed on the surface through the holes; the receiving roller adsorbs melt-blown fibers on the surface of the receiving roller through self rotation to form a continuous thin fiber layer.
The main function of the negative pressure ensures that the melt-blown fiber is cooled and formed in time and attached to the surface of the receiving roller. The meltblown fibers are not attracted to the interior of the receiving roll because the receiving roll is held in rotation during the process and only the head end of the meltblown fibers are drawn into the openings as the receiving roll rotates, forming a mat or film with other meltblown fibers attached to the surface of the receiving roll.
Preferably, the stripping device adopts a stripping roller to strip the thin fiber layer from the surface of the receiving roller.
Preferably, the cutting device comprises a circular cutter head and a rotating shaft, wherein the circular cutter head is arranged on the rotating shaft, and the rotating shaft rotates to drive the circular cutter head to rotate so as to cut the thin fiber layer into thin fiber strips;
Preferably, the cutting device further comprises at least two gauge rings, the gauge rings are arranged between the circular ring cutterheads, and the distance between the adjacent circular ring cutterheads can be set by changing the gauge rings with different lengths, and the distance range is 0.1-55 mm; the width of the fiber strips can be realized by adjusting the distance between two adjacent circular cutter heads according to the process requirement, and the method is used for preparing melt-blown fiber yarns with different counts after twisting by cutting the thin fiber layers into different numbers of thin fiber strips.
Preferably, a plurality of channels are symmetrically arranged on two sides of the inside of the slitting device, each channel is in a truncated cone shape, the diameter of a channel inlet above the channel is larger than that of a channel outlet below the channel, and the design of wide inlet and narrow outlet of the channel can enable a thin fiber strip entering flat and thin to be wrapped and output in a cylindrical shape;
Selecting a corresponding sliver separator to ensure that the fiber sliver can smoothly enter the sliver separator and the output fiber sliver is in a wrapped state, wherein the fiber sliver comprises the number of channels in the sliver separator, the inner diameter value of the channel inlet and the inner diameter value of the channel outlet; the number of the channels in the sliver separator can be in one-to-one correspondence with the number of the cut fiber slivers, and a plurality of fiber slivers can also be in correspondence with one channel and are used for twisting a plurality of cylindrical fiber slivers at the same time so as to twist the cylindrical fiber slivers into a plurality of yarns; the inner diameter of the channel inlet in the striping machine ranges from 2 mm to 60mm, and the inner diameter of the channel outlet ranges from 1mm to 30mm. For effecting the wrapping of a single thin sliver to form a single cylindrical sliver for the preparation of a single strand of yarn, or the simultaneous wrapping of multiple thin slivers to form multiple cylindrical slivers for the preparation of a multi-strand yarn
Preferably, the twisting yarn forming device comprises a yarn guide tube and a swivel, wherein the yarn guide tube is obliquely arranged on the swivel, the included angle alpha between the yarn guide tube and the swivel is 5-85 degrees, and the smaller the alpha value is, the larger the torque for twisting yarns is; the swivel is driven by external device to rotate, and the swivel is arranged above the storage cylinder, and the swivel is not contacted with the storage cylinder, so that the swivel does not rotate along with the storage cylinder.
Preferably, the twisting yarn forming device further comprises a yarn carrying plate, a spring and a storage cylinder; the yarn carrying plate is arranged below the swivel, the yarn carrying plate is in sliding connection with the storage cylinder, one end of the spring is connected with the bottom of the yarn carrying plate, and the other end of the spring is connected with the bottom inside the storage cylinder. The yarn carrying plate is in sliding connection with the storage cylinder, so that the yarn carrying plate slowly descends along with more yarns on the yarn carrying plate, spinning is stopped after the yarns reach a set value, and spinning is restarted again after a new yarn cylinder is replaced.
The storage cylinder rotates to drive the yarn carrying plate to rotate, the storage cylinder rotates at a certain speed, and meanwhile, the storage cylinder drives the yarn carrying plate to rotate at a certain rotating speed, so that yarns are stored on the yarn carrying plate according to a certain rule, yarn guide tube specifications, swivel rotating speed parameters, rotating speed parameters of the storage cylinder and the like meeting the requirements are selected according to the fineness and the technological requirements of spun yarns, and yarns designed for spinning are started to run and stored on the yarn carrying plate according to a certain rule;
According to the yarns with different count ranges, the yarn guide tube is provided with different specifications, the rotating speed of the rotating ring not only influences the twist of the yarns, but also determines the key of storage molding of the yarns according to the rotating speed ratio of the rotating ring to the storage cylinder, and the rotating speed ratio ranges from 1 to 100, preferably from 5 to 40.
Preferably, the yarn forming device for melt-blown fibers further comprises a pair of rollers arranged between the cutting device and the sliver separator, the pair of rollers being used for clamping the cut thin fiber sliver and conveying the thin fiber sliver to the upper part of the sliver separator.
Preferably, the yarn forming device for melt-blown fibers further comprises a sliver hook, a compression roller and a sliver roller, wherein the sliver roller is arranged below the sliver separator, the compression roller is arranged on the upper side of the sliver roller, the sliver hook is arranged below the sliver roller, and the twisting yarn forming device is arranged below the sliver hook.
A method of forming a yarn of meltblown fibers comprising the steps of:
S1, forming a thin fiber layer by using sprayed melt-blown fibers;
s2, cutting the thin fiber layer into thin fiber strips;
s3, wrapping the thin fiber strips to form cylindrical fiber strips;
and S4, rotating and twisting the cylindrical fiber strips into yarns.
Preferably, in the step S2, the thin fiber layer is uniformly cut into thin fiber strips with the same width;
adjusting the cutting quantity of the thin fiber strips, wherein the cutting quantity of the thin fiber strips is inversely proportional to the width of the thin fiber strips;
The thin fiber layer is cut into thin fiber strips with different numbers, and the thin fiber strips are twisted to prepare melt-blown fiber yarns with different counts.
Preferably, in the step S3, the single thin fiber rod is wrapped to form a single cylindrical fiber rod, and then the single cylindrical fiber rod is rotationally twisted to form a single yarn;
Or wrapping a plurality of thin fiber strips simultaneously to form a plurality of cylindrical fiber strips, and twisting the cylindrical fiber strips simultaneously and twisting the cylindrical fiber strips with each other to form a multi-strand yarn.
Advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
(1) The device realizes continuous preparation of melt-blown fiber yarns, has wide application range of raw materials and simple equipment operation;
(2) According to the invention, melt-blown fiber yarns with different counts can be continuously prepared by twisting according to the control of the dividing width of the fiber strips, the fineness of the yarns is uniform, and the range of the spinnable count is large;
(3) The device can twist single fiber strips into yarns, and simultaneously twist a plurality of fiber strips to form a plurality of yarns;
(4) The yarn coil prepared by the device and the method is placed on the yarn carrying plate, the yarn capacity is large, and the yarn storage tension is small.
Drawings
FIG. 1 is a schematic view of the overall structure of a yarn forming device for melt blown fibers of the present invention;
fig. 2 is a schematic diagram of a receiving device according to the present invention;
FIG. 3 is a schematic view of a cutting device according to the present invention;
FIG. 4 is a schematic diagram of a slitter according to the present invention;
Fig. 5 is a schematic structural view of the twisting yarn forming device in the present invention.
Reference numerals: 1. a melt blowing device; 2. a thin fibrous layer; 3. a receiving device; 4. a stripping device; 5. a cutting device; 6. a roller pair; 7. a slitting device; 8. a guide bar hook; 9. a press roller; 10. a yarn guiding roller; 11. twisting yarn forming device; 12. a circular cutter head; 13. a gauge ring; 14. a rotation shaft; 15. a channel inlet; 16. a channel outlet; 17. yarn guiding tube; 18. a swivel; 19. yarn carrying plate; 20. a spring; 21. and (5) storing a cylinder.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments.
Example 1: referring to fig. 1-5, a yarn forming device for melt-blown fibers comprises a melt-blowing device 1, a receiving device 3, a stripping device 4, a cutting device 5, a sliver separator 7 and a twisting yarn forming device 11;
The melt blowing device 1 is used for blowing melt blown fibers;
the receiving device 3 is arranged at one side of the melt-blowing device 1 and is used for receiving the melt-blown fibers sprayed by the melt-blowing device 1 to be adsorbed on the surface of the melt-blown fibers to form a continuous thin fiber layer 2;
The receiving device 3 comprises a cylindrical receiving roller, the surface of the receiving roller is provided with uniformly arranged holes, negative pressure is generated inside the receiving roller, and negative pressure adsorption is formed on the surface through the holes; the receiving roller adsorbs melt-blown fibers on the surface of the receiving roller through self rotation to form a continuous thin fiber layer;
The main function of the negative pressure ensures that the melt-blown fiber is cooled and formed in time and attached to the surface of the receiving roller. The meltblown fibers are not attracted to the interior of the receiving roll because the receiving roll is held in rotation during the process and only the head end of the meltblown fibers are drawn into the openings as the receiving roll rotates, forming a mat or film with other meltblown fibers attached to the surface of the receiving roll.
The stripping device 4 is arranged below the receiving device 3 and is used for stripping the continuous thin fiber layer 2 from the surface of the receiving device 3; the stripping device 4 uses a stripping roller to strip the thin fiber layer 2 from the surface of the receiving roller.
A cutting device 5 is arranged below the stripping device 4 for receiving the continuous thin fibre layer 2 and cutting it into thin fibre strips;
the cutting device 5 comprises a circular cutter 12, a gauge ring 13 and a rotating shaft 14, wherein the circular cutter 12 is arranged on the rotating shaft 14, the gauge ring 13 is arranged between the adjacent circular cutters 12, and the circular cutter 12 is driven to rotate through the rotation of the rotating shaft 14 to cut the thin fiber layer 2 into thin fiber strips.
The roller pair 6 is arranged between the cutting device 5 and the sliver separator 7, and the roller pair 6 is used for clamping the cut thin fiber sliver and conveying the cut thin fiber sliver to the upper part of the sliver separator 7.
The roller pair 6 ensures that the thin fiber layer 2 maintains a certain tension when being cut by the cutting device 5, thereby ensuring the cutting quality; the thin sliver, which is flattened and thin after cutting, is manually introduced into the passage inlet 15 in the sliver separator 7 before spinning starts, which operation is part of the spinning joint operation.
The sliver separator 7 is arranged below the cutting device 5 and is used for receiving the thin fiber sliver and outputting the thin fiber sliver into a cylindrical fiber sliver in a wrapping mode;
The inside both sides symmetry of divides strip ware 7 arranges a plurality of passageways, and every passageway is the round platform shape, and the passageway entry 15 diameter above the passageway is greater than the passageway exit 16 diameter below the passageway, and the design that the passageway width is advanced narrow and is gone out can make to get into the flat and thin form fibrid package and export with cylindric fibrid.
The yarn guiding roller 10 is arranged below the sliver separator 7, the compression roller 9 is arranged on the upper side of the yarn guiding roller 10, the yarn guiding hook 8 is arranged below the yarn guiding roller 10, and the twisting yarn forming device 11 is arranged below the yarn guiding hook 8; the sliver guide hook 8, the press roller 9 and the sliver guide roller 10 are matched to convey the cylindrical fiber sliver wrapped by the sliver separator 7 to the position above the yarn guide tube 17.
The twisting yarn forming device 11 is used for driving the cylindrical fiber strips to rotate and twist into yarns for storage.
The twisting yarn forming device 11 comprises a yarn guide tube 17, a swivel 18, a yarn carrying plate 19, a spring 20 and a storage barrel 21, wherein the yarn guide tube 17 is obliquely arranged on the swivel 18, and an included angle between the yarn guide tube 17 and the swivel 18 is an included angle alpha. The yarn carrying plate 19 is arranged below the swivel 18, the yarn carrying plate 19 is in sliding connection with the storage cylinder 21, one end of the spring 20 is connected with the bottom of the yarn carrying plate 19, and the other end of the spring is connected with the bottom inside the storage cylinder 21, so that the yarn carrying plate 19 slowly descends along with more and more yarns on the yarn carrying plate 19, spinning is stopped after the yarns reach a set value, and spinning is restarted again after a new yarn cylinder is replaced; the rotation of the storage drum 21 drives the yarn carrier 19 to rotate.
The swivel 18 is driven to rotate by an external device, the swivel 18 is disposed above the storage cylinder 21, and the swivel 18 is not in contact with the storage cylinder 21, so that the swivel 18 does not rotate with the storage cylinder 21; the storage drum 21 rotates at a certain speed, and meanwhile, the storage drum 21 drives the yarn carrying plate 19 to rotate at a certain rotation speed, so that yarns are stored on the yarn carrying plate 19 according to a certain rule.
The basis weight of the thin fiber layer 2 is 60g/m 2, and the specific parameters of the yarn forming device of the melt-blown fiber are set as follows:
The distance between two adjacent ring cutterheads 12 is 5mm, the number of channels in the slivers 7 corresponds to the number of fiber strips one by one, the width of a channel inlet 15 is 6mm, the width of a channel outlet 16 is 3mm, the rotating speed of a yarn guiding roller 10 is 20m/min, the rotating speed of a rotating ring 18 is 6000r/min, the rotating speed of a storage cylinder 21 is 200r/min, a yarn guiding tube 17 with the inner diameter of 4mm is selected, and the included angle alpha between the yarn guiding tube 17 and the rotating ring 18 is 24 degrees, so that melt blown fiber yarns are spun.
The test yarn count is 350tex, the yarn breaking strength is 489cN/tex, the yarn thickness is uniform, and the evenness is: 10.8%, 20% coarse and fine material.+ -. 50% hairiness and 0.
Example 2 differs from example 1 in that:
The basis weight of the thin fiber layer 2 is 60g/m 2, and the specific parameters of the yarn forming device of the melt-blown fiber are set as follows:
The distance between two adjacent ring cutterheads 12 is 2mm, the number of channels in the slivers 7 corresponds to the number of fiber strips one by one, the width of a channel inlet 15 is 3mm, the width of a channel outlet 16 is 1mm, the rotating speed of a yarn guiding roller 10 is 15m/min, the rotating speed of a rotating ring 18 is 5000r/min, the rotating speed of a storage cylinder 21 is 200r/min, a yarn guiding tube 17 with the inner diameter of 2mm is selected, and the included angle alpha between the yarn guiding tube 17 and the rotating ring 18 is 45 degrees, so that melt blown fiber yarns are spun.
The test yarn count is 158tex, the yarn breaking strength is 259cN/tex, the yarn thickness is uniform, and the evenness is: 12.7%, 335 for coarse detail.+ -. 50% and 0 for hairiness.
Example 3 differs from example 1 in that:
the basis weight of the thin fiber layer 2 is 80g/m 2, and the specific parameters of the yarn forming device of the melt-blown fiber are set as follows:
the distance between two adjacent ring cutterheads 12 is 5mm, and the ratio of the number of channels in the slitting device 7 to the number of fiber strips is 1:2, namely 2 fiber strips enter a channel at the same time, the width of the channel inlet 15 is 12mm, the width of the channel outlet 16 is 5mm, the rotating speed of the yarn guiding roller 10 is 45m/min, the rotating speed of the rotating ring 18 is 7000r/min, the rotating speed of the storage cylinder 21 is 350r/min, the yarn guiding tube 17 with the inner diameter of 8mm is selected, and the included angle alpha between the yarn guiding tube 17 and the rotating ring 18 is 35 degrees, so that a plurality of yarns are spun.
The test yarn count is 880tex, the yarn breaking strength is 815cN/tex, the yarn thickness is uniform, and the evenness is: 8.7%, 15% coarse and fine material and 0 hairiness.
Example 4 differs from example 1 in that:
The basis weight of the thin fiber layer 2 is 40g/m 2, and the specific parameters of the yarn forming device of the melt-blown fiber are set as follows:
The distance between two adjacent ring cutterheads 12 is 15mm, the number of channels in the slivers 7 corresponds to the number of fiber strips one by one, the width of the channel inlets 15 is 16mm, the width of the channel outlets 16 is 6mm, the rotating speed of the yarn guiding roller 10 is 45m/min, the rotating speed of the rotating ring 18 is 4500r/min, the rotating speed of the storage cylinder 21 is 300r/min, the yarn guiding tube 17 with the inner diameter of 7mm is selected, the included angle alpha between the yarn guiding tube 17 and the rotating ring 18 is 29 degrees, and melt-blown fiber yarns are spun.
The test yarn count is 675tex, the yarn breaking strength is 713cN/tex, the yarn thickness is uniform, and the evenness is: 9.3%, 19% coarse and fine material.+ -. 50% hairiness and 0.
Based on examples 1-4, it can be seen that in examples 1 and 2, the same fixed weight thin fiber layer is cut into different numbers of thin fiber strips, and the thin fiber strips are twisted to prepare melt-blown fiber yarns with different counts, and the larger the distance between two adjacent ring cutterheads 12 is, the larger the yarn breaking strength is; examples 1,2, and 4 were all used to make single yarns and example 3 was used to make multi-ply yarns.
A method of forming a yarn of meltblown fibers comprising the steps of:
step S1, forming a thin fiber layer 2 by using sprayed melt-blown fibers;
S2, cutting the thin fiber layer 2 into thin fiber strips;
uniformly cutting the thin fiber layer into thin fiber strips with the same width;
adjusting the cutting quantity of the thin fiber strips, wherein the cutting quantity of the thin fiber strips is inversely proportional to the width of the thin fiber strips;
The thin fiber layer is cut into thin fiber strips with different numbers, and the thin fiber strips are twisted to prepare melt-blown fiber yarns with different counts.
S3, wrapping the thin fiber strips to form cylindrical fiber strips;
wrapping the single thin fiber sliver to form a single cylindrical fiber sliver for preparing single-strand yarns; or wrapping a plurality of thin fiber strips simultaneously to form a plurality of cylindrical fiber strips for preparing multi-strand yarns;
s4, rotating and twisting the cylindrical fiber strips into yarns;
Respectively twisting the single cylindrical fiber strips in a rotary mode to form single yarns; or a plurality of cylindrical fiber strips are twisted simultaneously and twisted with each other to form a multi-strand yarn.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A yarn forming device for melt-blown fibers, which comprises a melt-blowing device (1) and is characterized by also comprising a receiving device (3), a stripping device (4), a cutting device (5), a sliver separator (7) and a twisting yarn forming device (11);
The receiving device (3) is arranged at one side of the melt-blowing device (1) and is used for receiving melt-blown fibers sprayed by the melt-blowing device (1) to be adsorbed on the surface of the melt-blown fibers to form a continuous thin fiber layer (2);
The stripping device (4) is arranged below the receiving device (3) and is used for stripping the continuous thin fiber layer (2) from the surface of the receiving device (3);
the cutting device (5) is arranged below the stripping device (4) and is used for receiving the continuous thin fiber layer (2) and cutting the continuous thin fiber layer into thin fiber strips;
The cutting device (5) comprises a circular cutter head (12) and a rotating shaft (14), wherein the circular cutter head (12) is arranged on the rotating shaft (14), and the rotating shaft (14) rotates to drive the circular cutter head (12) to rotate so as to cut the thin fiber layer (2) into thin fiber strips;
The sliver separator (7) is arranged below the cutting device (5) and is used for receiving the thin fiber sliver and outputting the thin fiber sliver into cylindrical fiber sliver in a wrapping mode;
A plurality of channels are symmetrically arranged on two sides of the inside of the slitting device (7), each channel is in a truncated cone shape, and the diameter of a channel inlet (15) above the channel is larger than that of a channel outlet (16) below the channel;
Wrapping the single thin fiber strips to form single cylindrical fiber strips, and rotationally twisting the single cylindrical fiber strips to form single yarns;
or wrapping a plurality of thin fiber strips simultaneously to form a plurality of cylindrical fiber strips, and twisting the cylindrical fiber strips simultaneously and twisting the cylindrical fiber strips mutually to form a plurality of yarns;
the twisting yarn forming device (11) is arranged below the sliver separator (7) and is used for driving the cylindrical fiber sliver to rotate and twist into yarn for storage;
The twisting yarn forming device (11) comprises a yarn guide tube (17) and a swivel (18), wherein the yarn guide tube (17) is obliquely arranged on the swivel (18), and the swivel (18) is driven to rotate by an external device.
2. A device for forming yarns of meltblown fibers according to claim 1, characterized in that the receiving means (3) comprise a cylindrical receiving drum, the surface of which is provided with evenly arranged openings, the interior of which is provided with negative pressure and through which negative pressure suction is formed on the surface; the receiving roller adsorbs melt-blown fibers on the surface of the receiving roller through self rotation to form a continuous thin fiber layer.
3. A device for forming yarns of meltblown fibers according to claim 1, characterized in that the cutting device (5) further comprises spacer rings (13), the number of ring cutter discs (12) being at least two, the spacer rings (13) being arranged between adjacent ring cutter discs (12), the spacing between adjacent ring cutter discs (12) being provided by changing spacer rings (13) of different lengths.
4. A device for forming yarns of meltblown fibers according to claim 1, characterized in that the twisted yarn forming device (11) further comprises a yarn carrier plate (19), springs (20) and a storage drum (21); yarn carrying plate (19) set up in swivel (18) below, yarn carrying plate (19) and cylinder (21) sliding connection, yarn carrying plate (19) bottom is connected to spring (20) one end, and the other end is connected in the inside bottom of cylinder (21), cylinder (21) rotation drive yarn carrying plate (19) are rotatory.
5. A method of forming a melt blown fiber using the yarn forming device of any one of claims 1 to 4, comprising the steps of:
Step S1, forming a thin fiber layer (2) by using the sprayed melt-blown fibers;
s2, cutting the thin fiber layer (2) into thin fiber strips;
s3, wrapping the thin fiber strips to form cylindrical fiber strips;
and S4, rotating and twisting the cylindrical fiber strips into yarns.
6. A method of forming a yarn of meltblown fibers as set forth in claim 5, wherein,
In the step S2, uniformly cutting the thin fiber layer (2) into thin fiber strips with the same width;
adjusting the cutting quantity of the thin fiber strips, wherein the cutting quantity of the thin fiber strips is inversely proportional to the width of the thin fiber strips;
The thin fiber layer (2) is cut into thin fiber strips with different numbers, and the thin fiber strips are twisted to prepare melt-blown fiber yarns with different counts.
7. The method of claim 5, wherein in step S3, the individual thin fiber strands are wrapped to form individual cylindrical fiber strands, and the individual cylindrical fiber strands are then spun and twisted to form individual yarns;
Or wrapping a plurality of thin fiber strips simultaneously to form a plurality of cylindrical fiber strips, and twisting the cylindrical fiber strips simultaneously and twisting the cylindrical fiber strips with each other to form a multi-strand yarn.
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