A method for making high-elastic bread yarn and its matching equipment

Abstract

The invention discloses a method for making a high-elastic bread yarn, comprising the following steps: S1 yarn spinning: after installing an elastic yarn tube in a yarn storage disk spindle, the elastic yarn passes through a spindle core and a wire guide tube, then the elastic yarn is sequentially led through an upper drafting roller, a shaping hot box and a lower drafting roller, and finally the thread end of the elastic yarn is introduced into a tube installed on a winding roller to complete the yarn spinning; S2 double twisting machine debugging: the spindle speed is set to 4000rpm, the twist is set to 0-100 twists, the roller ratio is set to 65%-85%, the winding ratio is set to 68-87%, the shaping hot box temperature is set to 160-200℃, and the rotation speed of the upper drafting roller is set to 60m / min-85m / min; S3 machine startup; S4 yarn deboiling: after running the double twisting machine, the physical properties of the elastic yarn are changed, so that the yarn wound on the tube meets the specifications of the high-elastic bread yarn, and finally the high-elastic bread yarn is removed from the tube.

Description

Technical Field

[0001] The invention relates to the field of textiles, in particular to a method for making high-elastic bread yarn and matching equipment thereof. Background Art

[0002] When the existing direct dyeing two-for-one twisting machine (hereinafter referred to as the two-for-one twisting machine) is used to twist the yarn, the yarn tube must first be placed in the yarn storage disk spindle for twisting; the twisted yarn is pulled by the upper drafting roller from top to bottom into the setting hot box of the existing two-for-one twisting machine for elastic setting; the set yarn is pulled by the lower drafting roller and then introduced into the tube of the winding roller.

[0003] The existing two-for-one twisting machine is only suitable for FDY and DTY twisting, and is not suitable for high elastic loose products. Therefore, the existing two-for-one twisting machine combined with the existing production process and flow can only produce ordinary twisted yarn, but cannot produce the polyester high elastic (imitation nylon) bread yarn required by the market.

[0004] In view of this, the inventor conducted in-depth research on the existing two-for-one twisting machine, and thus the present invention was produced. Summary of the invention

[0005] The purpose of the present invention is to provide a method for producing high-elastic bread yarn and its matching equipment, which can efficiently produce high-elastic bread yarn by using an existing two-for-one twisting machine in combination with matching processing equipment.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A method for producing high-elastic bread yarn comprises the following steps:

[0008] S1 Yarn spinning: After installing the elastic yarn tube in the yarn storage disk, pass the elastic yarn through the spindle core and the wire guide tube, then lead the elastic yarn through the upper drafting roller, the shaping hot box and the lower drafting roller in sequence, and finally lead the thread end of the elastic yarn into the tube installed on the winding roller to complete the yarn spinning;

[0009] S2 debugging of the two-for-one twister: the spindle speed is set to 4000rpm, the twist is set to 0-100 twists, the roller ratio is set to 65%-85%, the winding ratio is set to 68-87%, the setting temperature of the hot box is set to 160℃-200℃, and the speed of the upper drafting roller is set to 60m / min-85m / min;

[0010] S3 start-up operation: After setting the parameters of the two-for-one twister, run the two-for-one twister;

[0011] S4 Yarn unbobbing: After running the two-for-one twister, the physical properties of the elastic yarn are changed, so that the yarn wound on the tube meets the specifications of the high-elastic bread yarn, and finally the high-elastic bread yarn is removed from the tube.

[0012] Further, the overfeed ratio between the upper drafting roller and the lower drafting roller is 15-35%.

[0013] Furthermore, the yarn mover on the two-for-one twister moves once every 10 mm.

[0014] Furthermore, the spindle tension of the spindle disc on the two-for-one twisting machine is adjusted to 0.2CN / dtex.

[0015] Furthermore, the unwinding angle of the twisting balloon on the two-for-one twister is 360 degrees.

[0016] Furthermore, the upper drafting roller and the lower drafting roller are both belt-type rollers, and the pressure of the upper drafting roller and the lower drafting roller on the elastic wire is 0.7 to 1 kgf / m^2.

[0017] By adopting the above technical scheme, the method for making a high-elastic bread yarn of the present invention adjusts the overall process parameters so that the temperature of the shaping hot box matches the speed of the upper drafting roller and the lower drafting roller, so as to achieve the purpose of making the elastic yarn present a relaxed state; through the instant high-temperature shaping of the shaping hot box, the elastic yarn undergoes physical changes in the hot box, so that the unstable state of the polymer chain inside the elastic yarn becomes a stable state of orderly arrangement. The elastic yarn has an original length of 1 meter before entering the hot box, and can be stretched to a length of 1.3 meters after elastic shaping. Through this process, the physical properties of the original elastic yarn meet the requirements of polyester (imitation nylon) high-elastic bread yarn.

[0018] Another solution provided by the present invention is:

[0019] The supporting equipment of the method for making high-elastic bread yarn, the upper drafting roller and the lower drafting roller are the supporting equipment of the method for making high-elastic bread yarn, the upper drafting roller includes an upper active roller and an upper driven belt assembly that can be pressed against or away from the upper active roller, and the elastic wire in S1 is led between the upper active roller and the upper driven belt assembly; the lower drafting roller includes a lower active roller and a lower driven belt assembly that can be pressed against or away from the lower active roller, and the elastic wire in S1 is led between the lower active roller and the lower driven belt assembly.

[0020] Furthermore, the upper driven belt assembly includes an upper belt and an upper curved rod hinged to the frame of the two-for-one twister, the upper curved rod is equipped with two upper belt rollers, and the two upper belt rollers are cooperatively installed in the upper belt; the lower driven belt assembly includes a lower belt and a lower curved rod hinged to the frame of the two-for-one twister, the lower curved rod is equipped with two lower belt rollers, and the two lower belt rollers are cooperatively installed in the lower belt.

[0021] Furthermore, the upper driven belt assembly also includes an upper spring member capable of increasing the pressure of the upper belt on the upper active roller, and the two ends of the upper spring member are respectively fixed on the frame of the two-for-one twister and the upper curved rod; the lower driven belt assembly also includes a lower spring member capable of increasing the pressure of the lower belt on the lower active roller, and the two ends of the lower spring member are respectively fixed on the frame of the two-for-one twister and the lower curved rod.

[0022] Furthermore, the length of the tube is 26CM-28CM, and the diameter of the tube is 10CM-13CM.

[0023] The above technical solution adopts the existing two-for-one twisting machine in combination with the upper drafting roller and the lower drafting roller of the present invention to efficiently produce high-elastic bread yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the enlarged structure of the upper drafting roller and the lower drafting roller of the present invention.

[0026] Description of labels:

[0027] Yarn storage tray 1 Elastic yarn 2

[0028] Upper drafting roller 3 Upper active roller 31

[0029] Upper driven belt assembly 32 Upper belt 321

[0030] Upper curved rod 322 Upper belt roller 323

[0031] Upper spring part 33 Forming hot box 4

[0032] Lower drafting roller 5 Lower active roller 51

[0033] Lower driven belt assembly 52 Lower belt 521

[0034] Lower curved rod 522 Lower belt roller 523

[0035] Lower spring 53 Winding roller 6

[0036] Tube 7 High elastic bread yarn 8

[0037] Wire mover 9 DETAILED DESCRIPTION

[0038] In order to further explain the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] The present invention provides a method for producing high-elastic bread yarn, such as Figure 1 and2 As shown, the following steps are included:

[0040] S1 Yarn spinning: After installing the elastic yarn tube in the spindle of the yarn storage disk 1, the elastic yarn 2 passes through the spindle core and the yarn guide tube, that is, the yarn drawing operation of the yarn storage disk 1 is completed, and then the elastic yarn 2 is sequentially drawn through the upper drafting roller 3, the shaping hot box 4 and the lower drafting roller 5, and finally the thread end of the elastic yarn 2 is introduced into the tube 7 installed on the winding roller 6, and the elastic yarn 2 is wound around the tube 7 for five turns, and then the tube rack is put down to complete the yarn spinning;

[0041] S2 debugging of the two-for-one twister: the spindle speed is set to 4000rpm, the twist is set to 0-100 twists, the roller ratio is set to 65%-85%, the winding ratio is set to 68-87%, the setting temperature of the hot box is set to 160℃-200℃, and the speed of the upper drafting roller is set to 60m / min-85m / min;

[0042] S3 start-up operation: After setting the parameters of the two-for-one twister, run the two-for-one twister;

[0043] S4 yarn unbobbing: After running the two-for-one twister, the physical properties of the elastic yarn 2 are changed, so that the yarn wound on the tube 7 meets the specifications of the high-elastic bread yarn 8, and finally the high-elastic bread yarn 8 is removed from the tube 7.

[0044] The method for making a high-elastic bread yarn of the present invention adjusts the overall process parameters so that the temperature of the shaping hot box 4 matches the speed of the upper drafting roller 3 and the lower drafting roller 5, so as to achieve the purpose of making the elastic yarn 2 present a relaxed state; through the instant high-temperature shaping of the shaping hot box 4, the elastic yarn 2 undergoes physical changes in the hot box, so that the unstable state of the polymer chain inside the elastic yarn 2 is changed into a stable state of orderly arrangement. The elastic yarn 2 has an original length of 1 meter before entering the hot box, and can be stretched to a length of 1.3 meters after elastic shaping. Through this process, the physical properties of the original elastic yarn 2 meet the requirements of polyester (imitation nylon) high-elastic bread yarn 8.

[0045] The spindle back pressure of the spindle on the two-for-one twisting machine is adjusted to 1.5kgf / m^2, and the spindle back pressure of the spindle is adjusted from the conventional 2.5kgf / m^2 to 1.5kgf / m^2, so that the appearance of the two-for-one twisted elastic yarn 2 is soft to meet the specifications of the bread yarn and the requirements of subsequent yarn dyeing.

[0046] The overfeed rate between the upper drafting roller 3 and the lower drafting roller 5 is 1%. The yarn shifter 9 on the two-for-one twister moves once every 10 mm. The spindle tension of the spindle disc on the two-for-one twister is adjusted to 0.2CN / dtex. The unwinding angle of the twisting balloon on the two-for-one twister is 360 degrees. The process parameters are adjusted so that the produced yarn is more in line with the process requirements of polyester (imitation nylon) high elastic bread yarn 8.

[0047] The upper drafting roller 3 and the lower drafting roller 5 are both belt-type rollers, and the pressure of the upper drafting roller 3 and the lower drafting roller 5 on the elastic yarn 2 is 0.7 to 1 kgf / m^2. Due to the process requirements, the overfeed rate between the upper drafting roller 3 and the lower drafting roller 5 is 1%. The use of conventional overfeeding rollers cannot stably wrap the elastic yarn 2. The use of belt-type rollers can meet the process requirements while stably conveying the elastic yarn 2, and the pressure of the upper drafting roller 3 and the lower drafting roller 5 on the elastic yarn 2 is 0.7 to 1 kgf / m^2, which can stably convey the elastic yarn 2 without damaging the elastic yarn 2.

[0048] Another technical solution provided by the present invention is an upper drafting roller 3 and a lower drafting roller that are matched with the above-mentioned high-elastic bread yarn production method. Figure 1 and 2 As shown:

[0049] The upper drafting roller 3 includes an upper active roller 31 and an upper driven belt assembly 32 that can be pressed against or away from the upper active roller 31. The elastic wire 2 in S1 is led between the upper active roller 31 and the upper driven belt assembly 32. The upper driven belt assembly 32 includes an upper belt 321 and an upper curved rod 322 with one end hinged to the frame of the two-for-one twisting machine. The other end of the upper curved rod 322 is rotatably mounted with two upper belt rollers 323, and the two upper belt rollers 323 are cooperatively mounted in the upper belt 321. The upper driven belt assembly 32 also includes an upper spring member 33 that can increase the pressure of the upper belt 321 on the upper active roller 31. The two ends of the upper spring member 33 are respectively fixed to the frame of the two-for-one twisting machine and the upper curved rod 322. The pressure of the upper belt 321 on the elastic wire 2 is 0.7 to 1 kgf / m^2.

[0050] The lower drafting roller 5 comprises a lower active roller 51 and a lower driven belt assembly 52 which can be pressed against or away from the lower active roller 51. The elastic yarn 2 in S1 is led between the lower active roller 51 and the lower driven belt assembly 52. ​​The lower driven belt assembly 52 comprises a lower belt 521 and a lower curved rod 522 which is hinged to the frame of the two-for-one twisting machine at one end. The other end of the lower curved rod 522 is rotatably mounted with two lower belt rollers 523, and the two lower belt rollers 523 are cooperatively mounted in the lower belt 521.

[0051] The lower driven belt assembly 52 also includes a lower spring member 53 capable of increasing the pressure of the lower belt 521 on the lower active roller 51, and the two ends of the lower spring member 53 are respectively fixed to the frame of the twister and the lower curved rod 522. The pressure of the elastic yarn 2 of the lower belt 521 is 0.7 to 1 kgf / m^2.

[0052] The length of the tube 7 is 26CM-28CM, and the diameter of the tube 7 is 10CM-13CM. The large-volume tube of this specification is used to meet the physical property requirements of the high-elastic bread yarn 8, so that the high-elastic bread yarn 8 is easier to remove from the tube 7 and meet the requirements of subsequent dyeing.

[0053] The existing two-for-one twisting machine combined with the upper drafting roller 3 and the lower drafting roller of the present invention can efficiently produce the high-elastic bread yarn 8.

[0054] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made thereto by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A method for producing high-elastic bread yarn, characterized in that: The steps include: S1 Yarn spinning: After installing the elastic yarn tube in the yarn storage disk, pass the elastic yarn through the spindle core and the wire guide tube, then lead the elastic yarn through the upper drafting roller, the shaping hot box and the lower drafting roller in sequence, and finally lead the thread end of the elastic yarn into the tube installed on the winding roller to complete the yarn spinning; S2 debugging of the two-for-one twister: the spindle speed is set to 4000rpm, the twist is set to 0-100 twists, the roller ratio is set to 65%-85%, the winding ratio is set to 68-87%, the setting temperature of the hot box is set to 160℃-200℃, and the speed of the upper drafting roller is set to 60m / min-85m / min; S3 start-up operation: After setting the parameters of the two-for-one twister, run the two-for-one twister; S4 Yarn unbobbing: After running the two-for-one twister, the physical properties of the elastic yarn are changed, so that the yarn wound on the tube meets the specifications of the high-elastic bread yarn, and finally the high-elastic bread yarn is removed from the tube; The overfeed rate between the upper drafting roller and the lower drafting roller is 15%-35%; The wire mover on the two-for-one twister moves once every 10 mm; The spindle tension of the spindle disc on the two-for-one twister is adjusted to 0.2CN / dtex; The unwinding angle of the twisting balloon on the two-for-one twister is 360 degrees; The upper drafting roller and the lower drafting roller are both belt-type rollers, and the pressure of the upper drafting roller and the lower drafting roller on the elastic wire is 0.7 to 1 kgf / m^2.

2. According to the supporting equipment of the method for making high-elastic bread yarn according to claim 1, the upper drafting roller and the lower drafting roller are supporting equipment of the method for making high-elastic bread yarn, characterized in that: The upper drafting roller includes an upper active roller and an upper driven belt assembly that can be pressed against or away from the upper active roller, and the elastic wire in S1 is led between the upper active roller and the upper driven belt assembly; the lower drafting roller includes a lower active roller and a lower driven belt assembly that can be pressed against or away from the lower active roller, and the elastic wire in S1 is led between the lower active roller and the lower driven belt assembly.

3. The supporting equipment of the method for making high-elastic bread yarn according to claim 2 is characterized in that: The upper driven belt assembly includes an upper belt and an upper curved rod hinged to the frame of the two-for-one twister, the upper curved rod is equipped with two upper belt rollers, and the two upper belt rollers are cooperatively installed in the upper belt; the lower driven belt assembly includes a lower belt and a lower curved rod hinged to the frame of the two-for-one twister, the lower curved rod is equipped with two lower belt rollers, and the two lower belt rollers are cooperatively installed in the lower belt.

4. The supporting equipment of the method for making high-elastic bread yarn according to claim 3 is characterized in that: The upper driven belt assembly also includes an upper spring component capable of increasing the pressure of the upper belt on the upper active roller, and the two ends of the upper spring component are respectively fixed to the frame of the two-for-one twister and the upper curved rod; the lower driven belt assembly also includes a lower spring component capable of increasing the pressure of the lower belt on the lower active roller, and the two ends of the lower spring component are respectively fixed to the frame of the two-for-one twister and the lower curved rod.

5. According to claim 2, the supporting equipment for the method for making high-elastic bread yarn further comprises the tube, characterized in that: The length of the tube is 26CM-28CM, and the diameter of the tube is 10CM-13CM.

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