CN111842421B - Waste weft plain knitted fabric yarn recycling device and method - Google Patents
Waste weft plain knitted fabric yarn recycling device and method Download PDFInfo
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- CN111842421B CN111842421B CN202010666398.8A CN202010666398A CN111842421B CN 111842421 B CN111842421 B CN 111842421B CN 202010666398 A CN202010666398 A CN 202010666398A CN 111842421 B CN111842421 B CN 111842421B
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- 239000002699 waste material Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004064 recycling Methods 0.000 title claims abstract description 38
- 238000004659 sterilization and disinfection Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 14
- 235000013351 cheese Nutrition 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 239000003599 detergent Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
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- 239000003086 colorant Substances 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 230000001954 sterilising effect Effects 0.000 claims description 5
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- 239000000835 fiber Substances 0.000 abstract description 54
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- 230000014759 maintenance of location Effects 0.000 abstract description 6
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- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02H—WARPING, BEAMING OR LEASING
- D02H9/00—Leasing
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B19/00—Unravelling knitted fabrics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/26—Textiles, e.g. towels, beds, cloths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/02—Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Textile Engineering (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Looms (AREA)
Abstract
The invention discloses a device and a method for recycling waste weft plain knitted fabric yarns, and belongs to the technical field of textiles. The recycling device disclosed by the invention comprises: a distraction device and a traction wheel; wherein, the opening device mainly comprises a main shaft, an electric telescopic rod and a clothes supporting rod; the electric telescopic rods are arranged on the main shaft and uniformly dispersed on the main shaft at the same angle; one end of the electric telescopic rod is connected with the clothes supporting rod; the traction wheel is positioned on one side of the strutting device and is provided with a spiral groove. By utilizing the device and the method for recycling the waste weft plain knitted fabric yarns, compared with the yarns before the yarns are torn down, the fiber strength retention rate in the torn yarns is over 90 percent, and the fiber length retention rate in the torn yarns is over 98 percent; and the recycling method can effectively maintain the strength and the length of the fiber and create good conditions for the recycling of subsequent fibers and yarns.
Description
Technical Field
The invention belongs to the technical field of textiles, and relates to a device and a method for recycling waste weft plain knitted fabric yarns.
Background
China is the most populated and largest textile producing country in the world, consuming about 4530 million tons of textile raw material each year. The recovery and reuse of fiber can bring unprecedented environmental benefits to China, including reducing waste, reducing waste of original resources and avoiding excessive pollution. Currently, there are three main methods for recycling waste textiles, namely physical recycling, energy recycling and chemical recycling. Wherein, the physical recovery is to convert the waste textile into fiber through a mechanical process and to spin the fiber into yarn through a fully traceable and transparent production line.
The invention discloses a 'regenerated yarn production process' (CN108842250A), which is used for extracting regenerated cotton, wherein waste textiles with the same color are cut off by a rotary cutter to obtain a waste cloth corner with the length of less than 20 cm; then, spraying water on the waste cloth corners, wetting and stacking; then, conveying the waste cloth corners to a pre-opener for pre-decomposition opening; and finally, feeding the cotton into an opening machine set by using a vibrating cotton homogenizing and feeding cotton box to carry out opening and carding treatment to prepare the regenerated cotton.
The invention discloses a processing method for recycling textile fibers, which washes the textile fibers with clean water once and then dries the washed textile fibers for later use, puts the washed textile fibers into a crusher, keeps the temperature in the crusher at-140-150 ℃, and takes out the cleaned textile fibers for later use after the crushing is finished.
Although the treatment method disclosed in the prior art can recycle waste textiles to a certain extent and avoid resource waste and environmental pollution, when the treatment method disclosed in the prior art is adopted, the waste textiles are cut or crushed, and the length and strength of fibers are greatly damaged.
Therefore, how to break and tear open specific structure fabrics to solve the big damage of fibre performance of traditional breaking and tearing open process becomes the problem that the waste fabrics of physical recovery need to be solved urgently.
Disclosure of Invention
In view of the above, the present invention provides a waste weft plain knitted fabric yarn recycling device, which aims at solving the problems in the prior art. The invention designs a waste weft plain-knitted fabric yarn recycling device aiming at the damage of the traditional breaking to the length and strength of the fiber, so that the fiber strength retention rate in the yarn after the breaking is more than 90 percent, and the fiber length retention rate is more than 98 percent.
In order to achieve the above purpose, the invention provides the following technical scheme:
a waste weft plain knitted fabric yarn recycling device comprises: a distraction device and a traction wheel; wherein the content of the first and second substances,
the opening device mainly comprises a main shaft, an electric telescopic rod and a clothes supporting rod; the electric telescopic rods are arranged on the main shaft and uniformly dispersed on the main shaft at the same angle; one end of the electric telescopic rod is connected with the clothes support rod;
the traction wheel is positioned on one side of the opening device, and a spiral groove is formed in the traction wheel.
Furthermore, the middle shaft of the traction wheel is parallel to the main shaft of the distraction device, the height of the middle shaft of the traction wheel is consistent with that of the main shaft of the distraction device, and the distance between the traction wheel and the central point of the distraction device is 0.3-1.2 m.
Furthermore, the number of the clothes supporting rods is 3-7, and each clothes supporting rod is connected with the main shaft through the electric telescopic rod.
Further, a stepping motor is arranged in the electric telescopic rod and can control the electric telescopic rod to stretch and retract; the electric telescopic rod is provided with 3-6 pairs, and each team the length of the electric telescopic rod is 0.1-0.3 m.
It should be noted that the electric telescopic rod extends or shortens under the action of the stepping motor, the initial position of the electric telescopic rod is short, after the weft plain knitted fabric is sleeved on the clothes supporting rod, the electric telescopic rod supports the clothes under the action of the stepping motor, and the electric telescopic rod can drive the clothes supporting rod to rotate around the main shaft.
Furthermore, the number of the spiral grooves is 2-5 circles, and yarns are wound on the traction wheel along the spiral grooves.
It is worth to say that 2-5 circles of spiral grooves are formed in the traction wheel, and yarns are wound on the traction wheel along the spiral grooves to increase friction force.
The working principle of the waste weft plain knitted fabric yarn recycling device is as follows:
the opening device can open clothes with different sizes; the clothes hanger comprises six clothes supporting rods, wherein each clothes supporting rod is connected with a main shaft through two electric telescopic rods; the initial position of the electric telescopic rod is short, and after the weft plain knitted fabric is sleeved on the clothes support rod, the electric telescopic rod supports the clothes under the action of the stepping motor; the electric telescopic rod drives six clothes supporting rods to rotate around the main shaft; the waste textile of the weft plain knitting is sleeved on the six clothes supporting rods, and the electric telescopic rod is used for supporting the clothes under the action of the stepping motor.
The edge of the weft plain knitted fabric is pulled out to form a thread end, and the weft plain knitted fabric can be separated along the knitting direction or the reverse knitting direction and is separated into yarns under the action of a traction wheel force; and 2 ~ 5 circles of helicla flute are gone up to the traction wheel, and the yarn twines in order to increase frictional force on the traction wheel along the helicla flute.
In addition, the invention also protects a waste weft plain knitted fabric yarn recycling method using the device, which specifically comprises the following steps:
(1) removing the stitches: sleeving the waste weft plain knitted fabric on the unfolding device, then tearing a thread end at the edge of the waste weft plain knitted fabric, and unfolding the waste weft plain knitted fabric into yarns wound on the traction wheel under the action of the force of the traction wheel;
(2) stranding: winding the yarn withdrawn from the traction wheel in the step (1) into hank yarns by a hank former, and counting the length of the hank yarns in the hank yarn winding process;
(3) drying: drying the skein obtained in the step (2), weighing the skein, and calculating the linear density of the skein;
(4) classifying, spooling and packaging: classifying the yarns dried in the step (3) according to color, fineness and raw materials, and preparing hank into cheese by using a hank bobbin winder; finally, packaging and brushing the cheese into a label, and entering a selling link.
Preferably, the recycling method further comprises a pretreatment step; the method comprises the following specific steps:
sorting the waste weft plain knitted fabrics, and classifying according to colors; and washing the classified waste weft plain knitted fabrics with warm water and sterilizing for later use.
Further, the warm water washing step: and (3) putting the classified waste weft plain knitted fabric into warm water at the temperature of 30-50 ℃, and adding a neutral detergent to wash for 35-45 min.
Furthermore, the disinfection adopts steam high-temperature disinfection or ultraviolet disinfection; the disinfection time is 10-20 min.
The invention patent disclosed in the prior art "a regenerated color yarn production process" (CN108842250A) splits waste textiles into fibers, then spins the fibers into yarns, and sequentially cleans the yarns with absolute ethyl alcohol and distilled water; and the invention patent discloses a processing method for reusing textile fiber, which washes the textile fiber by using clean water once. The neutral detergent is used for cleaning, so that stains can be cleaned, and the damage of the detergent to the strength of cotton fibers can be avoided.
In addition, the invention applies to high-temperature sterilization with steam or ultraviolet sterilization, which kills bacteria and viruses and has less damage to the strength of the fiber. The invention patent of 'a regenerated color yarn production process' (CN108842250A) disclosed by the prior art has no special disinfection link, and the invention patent of 'a treatment method for recycling textile fibers' disclosed by the prior art is treated and disinfected by 60Co # gamma ray irradiation, and has potential safety hazard although the strength of the fibers is well reserved.
In addition, the rotating speed of the traction wheel is 3-5 m/min, and the winding linear speed of the hank winder is 500-1500 m/min.
The method for recycling the waste weft plain knitted fabric yarn disclosed by the invention is suitable for the following knitted fabrics:
(1) the method can be suitable for disassembling full cotton weft plain knitted fabric, full polyester staple fiber yarn weft plain knitted fabric, polyester-cotton blended 65/35 staple fiber yarn weft plain knitted fabric, full viscose staple fiber yarn weft plain knitted fabric and the like;
(2) the method can be suitable for disassembling weft plain knitted fabrics formed by yarns with different fineness, and the fineness range of the yarns is 8-60 tex;
(3) the method can be suitable for disassembling ring spinning yarn weft plain knitted fabrics, rotor spinning yarn weft plain knitted fabrics and the like;
(4) the method can be suitable for removing weft plain knitted fabrics, and also can be used for removing weft-knitted double-back fabrics and rib fabrics; the rib fabric can be separated along the edge row in the reverse weaving direction, and the weft plain fabric and the weft-knitted double-reverse side fabric can be separated along the edge row in the weaving direction and the reverse weaving direction.
Compared with the prior art, the invention discloses a device and a method for recycling waste weft plain knitted fabric yarns, which have the advantages that:
1) by utilizing the device and the method for recycling the waste weft plain knitted fabric yarns, compared with the yarns before the yarns are torn down, the fiber strength retention rate in the torn yarns is over 90 percent, and the fiber length retention rate in the torn yarns is over 98 percent; the recycling method can effectively keep the strength and the length of the fiber, and creates good conditions for the recycling of the subsequent fiber and yarn.
2) The waste weft-knitted plain knitted fabric is not cut or crushed but is raveled, yarns with the same color and fineness are lengthened, and the strength and length damage of fibers is small.
3) The waste weft plain knitted fabric yarn recycling device and method do not need to disassemble waste textiles into fibers and spin the fibers, and are simple in specific technological process operation, low in cost and suitable for popularization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a spreading device of the waste weft plain knitted fabric yarn recycling device.
FIG. 2 is a schematic structural view of a traction wheel of the waste weft plain knitted fabric yarn recycling device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-2 in the specification, the invention discloses a waste weft plain knitted fabric yarn recycling device, which specifically comprises the following components: a distraction device 1 and a traction wheel 2; wherein the content of the first and second substances,
the spreader 1 mainly comprises a main shaft 1.1, an electric telescopic rod 1.2 and a clothes supporting rod 1.3; the electric telescopic rods 1.2 are arranged on the main shaft 1.1 and are uniformly dispersed on the main shaft 1.1 at the same angle; one end of the electric telescopic rod 1.2 is connected with the clothes support rod 1.3;
the traction wheel 2 is positioned at one side of the distraction device 1, and the traction wheel 2 is provided with a spiral groove 2.1.
In order to further optimize the technical scheme, the middle shaft of the traction wheel 2 is parallel to the main shaft 1.1 of the distraction device 1 and has the same height, and the distance between the central points of the traction wheel 2 and the distraction device 1 is 0.3-1.2 m.
In order to further optimize the technical scheme, the number of the clothes supporting rods is six, and each clothes supporting rod is connected with the main shaft through an electric telescopic rod.
In order to further optimize the technical scheme, a stepping motor is arranged in the electric telescopic rod 1.2, and the stepping motor can control the electric telescopic rod 1.2 to stretch; the electric telescopic rod 1.2 is provided with 3-6 pairs, and the length of the electric telescopic rod 1.2 of each team is 0.1-0.3 m.
In order to further optimize the technical scheme, the number of the spiral grooves 2.1 is 2-5 circles, and the yarns are wound on the traction wheel along the spiral grooves 2.1.
In addition, the invention also protects a method for recycling waste weft plain knitted fabric yarns by using the device, which specifically comprises the following steps:
(1) removing the stitches: sleeving the waste weft plain knitted fabric on a spreading device, then tearing a thread end at the edge of the waste weft plain knitted fabric, and under the action of a traction wheel force, breaking apart the weft plain knitted fabric into yarns wound on the traction wheel;
(2) stranding: winding the yarn withdrawn from the traction wheel in the step (1) into hank yarns by a hank former, and counting the length of the hank yarns in the hank yarn winding process;
(3) drying: drying the skein obtained in the step (2), weighing, and calculating the linear density of the yarn;
(4) classifying, spooling and packaging: classifying the yarns dried in the step (3) according to color, fineness and raw materials, and preparing hank into cheese by using a hank bobbin winder; finally, packaging and brushing the cheese into a label, and entering a selling link.
In order to further optimize the technical scheme, the method for recycling the waste weft plain-knitted fabric yarns further comprises the following pretreatment steps: sorting the waste weft plain knitted fabrics, and classifying according to colors; and washing the classified waste weft plain knitted fabrics with warm water and sterilizing for later use.
Wherein the warm water washing step: putting the classified waste weft plain knitted fabric into warm water at the temperature of 30-50 ℃, and adding a neutral detergent to wash for 35-45 min; the disinfection adopts steam high-temperature disinfection or ultraviolet disinfection; the disinfection time is 10-20 min.
Further, the rotating speed of the traction wheel is 3-5 m/min, and the winding linear speed of the hank winder is 500-1500 m/min.
In order to further describe the technical scheme disclosed by the invention application and verify the technical effect achieved by the technical scheme, the inventor discloses the following embodiments and carries out the following experiments:
example 1:
a method for recycling waste weft plain knitted fabric yarns specifically comprises the following steps:
(1) sorting out all-cotton weft plain knitted fabrics in the waste textiles, classifying the all-cotton weft plain knitted fabrics according to colors, and then performing a pretreatment process. In the pretreatment process, washing is firstly carried out, the all-cotton weft plain-knit waste textile is washed for 45 minutes by adding neutral detergent into warm water at 30 ℃, and then is sterilized for 20 minutes at high temperature by adopting water vapor for standby.
(2) The disinfected cotton weft plain waste textile is sleeved on the device 1 for opening clothes. The automatic telescopic rod 1.2 can stretch the clothes under the action of the stepping motor. The automatic telescopic rod 1.2 drives six clothes supporting rods 1.3 to rotate around the main shaft 1.1. The waste textile of the weft plain knitting is sleeved on six clothes supporting rods 1.3, and the automatic telescopic rod 1.2 is used for supporting the clothes under the action of the stepping motor.
(3) The edge of the weft plain knitted fabric is pulled out of a thread end, and the weft plain knitted fabric can be separated into yarns under the action of the force of the traction wheel 2 because the weft plain knitted fabric can be separated along the knitting direction or the reverse knitting direction. The rotating speed of the traction wheel is 3m/min, 2-3 circles of spiral grooves 2.2 are formed in the traction wheel 2, and yarns are wound on the traction wheel along the spiral grooves 2.2 to increase friction force. The yarn exiting from the spiral groove 2.2 is wound into skein by a skein-making machine, and the length of the skein is counted in the process of winding the skein.
(4) And weighing the skein after the yarns in one piece of weft plain knitted fabric are disassembled, and calculating the linear density of the yarns. The skeins with the same color, fineness and raw materials are classified into one type, and the skeins are made into cheese by a skein winding machine. The pneumatic connector in the bobbin winder firstly performs pneumatic untwisting on the fibers in the two yarn heads, then performs pneumatic twisting on the fibers, and makes the multi-section skeins into cheese. Wherein the winding linear speed of the winder is 500-900 m/min.
(5) Packaging and brushing the cheese into a label, and entering a selling link.
The fiber strength in the waste textiles and the fibers in the yarns prepared by the method are tested by adopting the fiber monofilament tensile strength test standard ISO 11566 and 1996, and the fiber strength in the yarns prepared by the method is 93.6 percent of the fiber strength in the waste textiles.
The method for testing the length of the cotton fiber of GB T6098-once 2018 is adopted to test the mass weighted average length of the fiber in the waste textile and the yarn prepared by the method, and the length of the fiber in the yarn prepared by the method is 98.3% of the length of the fiber in the waste textile.
Example 2:
a method for recycling waste weft plain knitted fabric yarns specifically comprises the following steps:
(1) sorting out all-polyester weft plain knitted fabrics in the waste textiles, classifying the fabrics according to colors, and then performing a pretreatment process. In the pretreatment process, washing is firstly carried out, a washing agent is added into warm water with the temperature of 40 ℃ of all-cotton weft plain-knit waste textiles for washing for 40 minutes, and then ultraviolet rays are adopted for disinfection in the turning process for 10 minutes for later use.
(2) The disinfected full-polyester weft plain flat-knitted waste textile is sleeved on the device 1 for opening clothes. The automatic telescopic rod 1.2 can stretch the clothes under the action of the stepping motor. The automatic telescopic rod 1.2 drives six clothes supporting rods 1.3 to rotate around the main shaft 1.1. The waste textile of the weft plain knitting is sleeved on six clothes supporting rods 1.3, and the automatic telescopic rod 1.2 is used for supporting the clothes under the action of the stepping motor.
(3) The edge of the weft plain knitted fabric is torn off to form a thread end, and the weft plain knitted fabric can be loosened along the knitting direction or the reverse knitting direction and is loosened into yarns under the action of the force of the traction wheel 2. The rotating speed of the traction wheel is 5m/min, 2-3 circles of spiral grooves 2.2 are formed in the traction wheel 2, and yarns are wound on the traction wheel along the spiral grooves 2.2 to increase friction force. The yarn exiting from the spiral groove 2.2 is wound into skein by a skein-making machine, and the length of the skein is counted in the process of winding the skein.
(4) And weighing the skein after the yarns in one piece of weft plain knitted fabric are disassembled, and calculating the linear density of the yarns. The skeins with the same color, fineness and raw materials are classified into one type, and the skeins are made into cheese by a skein winding machine. The pneumatic connector in the bobbin winder firstly performs pneumatic untwisting on the fibers in the two yarn heads, then performs pneumatic twisting on the fibers, and makes the multi-section skeins into cheese. The winding linear speed of the winder is 700-1500 m/min.
(5) Packaging and brushing the cheese into a label, and entering a selling link.
The fiber strength in the waste textiles and the fibers in the yarns prepared by the method are tested by adopting the fiber monofilament tensile strength test standard ISO 11566 and 1996, and the strength of the fibers in the yarns prepared by the method is 95.6% of the strength of the fibers in the waste textiles.
The method for testing the length of the cotton fiber of GB T6098-once 2018 is adopted to test the mass weighted average length of the fiber in the waste textile and the yarn prepared by the method, and the length of the fiber in the yarn prepared by the method is 98.9% of the length of the fiber in the waste textile.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a waste weft plain knitted fabric yarn recycle device which characterized in that includes: a distraction device and a traction wheel; the opening device mainly comprises a main shaft, an electric telescopic rod and a clothes opening rod; the electric telescopic rods are arranged on the main shaft and uniformly dispersed on the main shaft at the same angle; one end of the electric telescopic rod is connected with the clothes support rod;
the traction wheel is positioned on one side of the opening device, and a spiral groove is formed in the traction wheel;
the middle shaft of the traction wheel is parallel to the main shaft of the distraction device and has the same height, and the distance between the traction wheel and the central point of the distraction device is 0.3-1.2 m;
the number of the clothes supporting rods is 3-7, and each clothes supporting rod is connected with the main shaft through the electric telescopic rod;
a stepping motor is arranged in the electric telescopic rod and can control the electric telescopic rod to stretch; the electric telescopic rods are provided with 3-6 pairs, and the length of each pair of electric telescopic rods is 0.1-0.3 m;
the number of the spiral grooves is 2-5 circles, and yarns are wound on the traction wheel along the spiral grooves.
2. A method for recycling waste weft plain knitted fabric yarns by using the device according to claim 1, which is characterized by comprising the following steps:
(1) removing the stitches: sleeving the waste weft plain knitted fabric on the unfolding device, then tearing a thread end at the edge of the waste weft plain knitted fabric, and unfolding the waste weft plain knitted fabric into yarns wound on the traction wheel under the action of the force of the traction wheel;
(2) stranding: winding the yarn withdrawn from the traction wheel in the step (1) into hank yarns by a hank former, and counting the length of the hank yarns in the hank yarn winding process;
(3) drying: drying the skein obtained in the step (2), weighing, and calculating the linear density of the yarn;
(4) classifying, spooling and packaging: classifying the yarns dried in the step (3) according to color, fineness and raw materials, and preparing hank into cheese by using a hank bobbin winder; finally, packaging and brushing the cheese into a label, and entering a selling link.
3. The method for recycling waste weft plain knitted fabric yarns according to claim 2, characterized by further comprising a pretreatment step; the method comprises the following specific steps:
sorting the waste weft plain knitted fabrics, and classifying according to colors; and washing the classified waste weft plain knitted fabrics with warm water and sterilizing for later use.
4. The method for recycling waste weft plain knitted fabric yarns according to claim 3, characterized in that the warm water washing step: and putting the classified waste weft plain knitted fabric into warm water at the temperature of 30-50 ℃, and adding a neutral detergent to wash for 35-45 min.
5. The method for recycling waste weft plain knitted fabric yarns according to claim 4, characterized in that the disinfection is carried out by steam high-temperature disinfection or ultraviolet disinfection; the disinfection time is 10-20 min.
6. The method for recycling waste weft plain-knitted fabric yarns according to claim 2, wherein the rotating speed of the traction wheel is 3-5 m/min, and the winding linear speed of the hank winder is 500-1500 m/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010666398.8A CN111842421B (en) | 2020-07-10 | 2020-07-10 | Waste weft plain knitted fabric yarn recycling device and method |
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| CN202010666398.8A CN111842421B (en) | 2020-07-10 | 2020-07-10 | Waste weft plain knitted fabric yarn recycling device and method |
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| CN111842421A CN111842421A (en) | 2020-10-30 |
| CN111842421B true CN111842421B (en) | 2022-08-23 |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9885127B2 (en) * | 2010-04-12 | 2018-02-06 | Paradigm One, Llc | Processes for using recycled waste cotton material in producing a textile product and textile products produced from waste cotton material |
| CN102926070B (en) * | 2012-11-12 | 2015-05-13 | 无锡市天然绿色纤维科技有限公司 | Dual mercerized yarn and processing method thereof |
| CN203450943U (en) * | 2013-08-26 | 2014-02-26 | 东华大学 | Automatic sweater unwinder |
| CN105821631A (en) * | 2016-05-10 | 2016-08-03 | 陈小磊 | Portable type detachable clothes drying hanger |
| CN106048873A (en) * | 2016-08-16 | 2016-10-26 | 江苏常朔针纺纱科技有限公司 | Automatic unweaving machine |
| CN106120225B (en) * | 2016-08-30 | 2018-04-13 | 嘉兴市华严花边织造有限公司 | Ribbon unwinder |
| CN106521793A (en) * | 2016-12-20 | 2017-03-22 | 浙江托姿时装有限公司 | Waste yarn recycling device |
| CN208648402U (en) * | 2018-05-31 | 2019-03-26 | 苏州锦湖针织制衣有限公司 | Reclaimer for woollen sweater defect ware yarn |
| CN108708020A (en) * | 2018-07-06 | 2018-10-26 | 苏州市亚澳纤维科技有限公司 | A kind of double-contracting core cellulose fiber yarn and its production technology |
| CN209651610U (en) * | 2019-01-17 | 2019-11-19 | 绍兴舒鑫化纤有限公司 | A kind of collection device of yarn recovery system |
| CN209740403U (en) * | 2019-01-22 | 2019-12-06 | 无锡市佐佑针纺有限公司 | Abandonment knitted fabric recovery unit |
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