CN109056155B - Fiber cloth twill weaving process - Google Patents
Fiber cloth twill weaving process Download PDFInfo
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- CN109056155B CN109056155B CN201811200899.6A CN201811200899A CN109056155B CN 109056155 B CN109056155 B CN 109056155B CN 201811200899 A CN201811200899 A CN 201811200899A CN 109056155 B CN109056155 B CN 109056155B
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/267—Glass
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
Abstract
The invention discloses a fiber cloth twill weaving process, which comprises the following steps: warping, sizing, drawing-in and weaving. The process adopts an air jet loom to adjust the twill cloth woven by the multi-arm opening, and has the advantages of high gram weight, high breaking strength and good flexibility; the soaking time with resin is short, the product quality can meet the customer requirements, and the high-end application field of the glass fiber cloth can be met. Meanwhile, the process can improve the running efficiency of the weaving machine, reduce the workload and improve the efficiency.
Description
Technical Field
The invention relates to the field of weaving, in particular to a twill weaving process of fiber cloth.
Background
The glass fiber cloth has wide application and can be used in the fields of Teflon, glass fiber reinforced plastic cloth, fire-proof plate base cloth and the like. With the development of production, the development and use fields of glass fiber cloth are wider.
The warp yarns of the loom shaft for weaving the glass fiber cloth electronic cloth by the air jet loom adopted in the prior industry are conventional G-series yarns, the difficulty of weaving the glass fiber cloth with high breaking strength and short cloth surface infiltration time is high, a thick yarn counting machine is required for producing the high breaking strength yarn by the air jet loom, large vibration parts are easy to wear, the cloth surface quality is affected, and the equipment operation efficiency is low; and the cost is high, the labor force is increased, the shutdown and startup time is increased, and the efficiency is influenced.
At present, glass fiber cloth with high gram weight, high breaking strength and good flexibility is generally woven by using a rapier loom, warp yarns of a loom beam are made of glass fiber yarns and twisted into plied yarns, the uneven yarn length is easy to occur when the plied yarns are twisted, and the friction of the glass fiber yarns in the production process of one doubling twister is increased, so that the cloth cover quality is greatly influenced. Moreover, the soaking time of the glass fiber yarns in the arrow shaft machine production is longer than that of the twill cloth produced by an air jet machine, and if the cloth with slow impregnation is encountered, the adhesion of the resin is poor, so that the performance of the circuit board is influenced.
Disclosure of Invention
The present invention is directed to solving the problems described above. The twill weaving process for the fiber cloth adopts an air jet loom, adjusts the twill cloth woven by the multi-arm opening, and has the advantages of high gram weight, high breaking strength and good flexibility; the soaking time with resin is short, the product quality can meet the customer requirements, and the high-end application field of the glass fiber cloth can be met; meanwhile, the process can improve the running efficiency of the weaving machine, reduce the workload and improve the efficiency.
According to one aspect of the invention, a fiber cloth twill weaving process is provided, which comprises the following steps:
a warping process: pulling a certain number of arranged cop tubes to a machine head from a creel and coiling the cop tubes on a warp beam;
sizing: leading out warp yarns on the warp beam by using a sizing machine, and immersing the warp yarns into the size for sizing;
drawing-in process: sequentially enabling the sized warp yarns to pass through a dropper, a harness wire and a reed;
weaving: the method comprises the steps of adopting an air jet loom, setting the opening time of the air jet loom to be 355-360 degrees, setting the height of a palm frame to be 12.8-13.4 cm and the leveling time to be 345-355 degrees, adjusting the multi-arm opening of the air jet loom, and weaving warp yarns and weft yarns one over the other.
In the weaving process, the weft insertion angle of the beginning and the end is set to be 90 +/-10-210 +/-10 degrees, and the injection angle and the closing angle of the main nozzle and the auxiliary nozzle are set simultaneously.
Wherein the injection angle and the closing angle of the main nozzle are 90-210 degrees;
the auxiliary nozzles are 6 groups, wherein the spraying angle and the closing angle of the first group of auxiliary nozzles are 90-210 degrees, the spraying angle and the closing angle of the second group of auxiliary nozzles are 110-220 degrees, the spraying angle and the closing angle of the third group of auxiliary nozzles are 140-235 degrees, the spraying angle and the closing angle of the fourth group of auxiliary nozzles are 165-245 degrees, the spraying angle and the closing angle of the fifth group of auxiliary nozzles are 185-255 degrees, and the spraying angle and the closing angle of the sixth group of auxiliary nozzles are 205-265 degrees.
Wherein in the weaving process, the beating-up angle is 175-185 degrees, the let-off tension is 30-60 kg, and the weft density teeth are 12-14T.
In the sizing process, the linear speed of a sizing machine is set to be 70-80 m/min, the sizing rate is 2 +/-0.5%, the temperature of the sizing machine is 320-340 ℃, and the pressure of a squeezing roller is 14-22 kN.
In the warping process, the single yarn tension of the cop is set to be 20-30N, and the winding tension is set to be 1500-2500N.
Wherein, still include the following step before the warping process:
a twisting process: unwinding and winding the fiber precursor from a filament barrel to a cop barrel under the tension of 15-30N, and twisting into a cop form.
The fiber used in the twill weaving process of the fiber cloth is glass fiber, carbon fiber, bamboo fiber, cotton yarn or chemical fiber.
Wherein, when the fiber is glass fiber, the method also comprises the following steps before the twisting process:
a wire drawing process: and coating the surface of the glass fiber with a sizing agent.
In the twisting step, the twisting direction is Z twist or S twist, and the twist number is 28-35 twist.
Wherein the cop is conditioned for 12-24 hours between the twisting step and the warping step.
The twill weaving process of the fiber cloth is different from the prior art, adopts an air jet loom, and can weave by adopting glass fiber, carbon fiber, bamboo fiber, cotton yarn or chemical fiber. Taking glass fiber as an example, the method specifically comprises the following steps:
a twisting process: and unwinding and winding the glass fiber precursor from the fiber barrel to a cop barrel under the tension of 15-30N, and twisting into a cop form. The twisting direction can be divided into Z twisting and S twisting, and the twist is 28-35 twisting; preferably 28 twists.
Because the moisture absorption of the glass fiber yarn is low, the water content of the glass fiber yarn in the twisting process is low and is only 0.07 percent. In order to avoid the phenomenon that the cop is in a loop-off state during unwinding, in actual production, when the cop which is just produced is used, the cop of a corresponding variety needs to be conditioned for 12-24 hours, the moisture regain of the cop is ensured, then the cop is fed for production, and defects caused by the loop-off yarn breakage are reduced.
A warping process: according to the requirements of the width of the cloth and the warp density, a certain number of arranged cop yarns are pulled to a machine head from a creel and are reeled on a beam. Setting single yarn tension of 20-30N and winding tension of 1500-2500N according to the density type of the tubular yarn; the warp yarns are tightly wound on a certain number of warp beams in parallel by a warping machine, so that the warp yarns have uniform tension. The tension can prevent broken yarn from being wound into the warp beam, and the warp beam is not driven by the machine to rotate at a high speed to rub to damage warp yarns; in addition, the tension of the warp yarn can be maintained in a stable state of +/-1.5% during the stopping, accelerating and high-speed running of the machine.
Meanwhile, the broken yarn induction detection is carried out on the working procedure, and if the broken yarn is detected in the production process, the broken yarn induction detection can stop automatically if the broken yarn is broken by the broken yarn and loose yarn twisting of the cop. Meanwhile, a hairiness detector is arranged for monitoring, so that the condition of yarn hairiness in the batch can be monitored more accurately, and the method is favorable for controlling abnormal mass flow and exposing the next process. And finishing the production of the beam, judging by an operator according to the quality information description in the production process, and the like.
Sizing: and (3) leading out warp yarns on a warp beam by using a sizing machine, immersing the warp yarns into the size, combining the size with high concentration and low viscosity, and applying PVA and PEG size with low polymerization degree to perform high-pressure sizing. Wherein the linear speed of the sizing machine is 70-80 m/min, the sizing rate is 2 +/-0.5%, the temperature of the sizing machine is 320-340 ℃, and the pressure of a press roll is 14-22 kN. Preferably, the linear speed of the sizing machine is 80m/min, the sizing rate is 2 +/-0.5%, the temperature of the sizing machine is 330 ℃, and the pressure of the press roll is 17-19 kN. The parameter setting can ensure that the warp can be quickly dried after being immersed in the slurry, the tension of the warp is uniformly wound on the beam, the beam for weaving is excellent, and the quality abnormity of the cloth surface is reduced.
And meanwhile, the broken yarn sensing detection is carried out on the sizing process. And if yarn breakage caused by unwinding of the warp beam is sensed, the yarn is automatically stopped, and secondary supervision is realized. And judging the beam of knitting according to the requirement by an operator, and transferring the beam of knitting quality information to the next procedure.
Drawing-in process: the warp yarns sequentially pass through a dropper, heddles and a reed according to a method specified by twill fabric process requirements, wherein the specification of the reed is used according to the production process requirements, and the reed is different in width and variety. And (5) after the drawing-in is finished, checking whether the drawing-in is wrong according to the staggering of the upper and lower heald frames.
Weaving: an air jet loom is adopted, and according to five mechanisms of the loom, a shedding mechanism, a weft insertion mechanism, a beating-up mechanism, a let-off mechanism and a winding mechanism, the five mechanisms are mutually matched to complete a complete action. And (3) weaving on a collar shaft, guiding a shaft, threading and twisting selvage yarns according to the required varieties, adjusting a multi-arm opening by a weaving machine, and weaving on the upper part and the lower part. Regular fixed length inspection and confirmation are carried out on the cloth cover quality, and the abnormal defects are recorded on the cloth roll information sheet, so that the subsequent cropping judgment and the like are facilitated.
Wherein, the process parameters are set as follows: opening time is 355-360 degrees, the height of a palm frame is 12.8-13.4 cm, and leveling time is 345-355 degrees; setting the starting and ending weft insertion angle to be 90 +/-10-210 +/-10 degrees, the beating-up angle to be 175-185 degrees, the let-off tension to be 30-60 kg and the weft density teeth to be 12-14T; preferably, the opening time is 360 °, the leveling time is 350 °, and the beating-up angle is 180 °.
While also setting the injection angle and closing angle of the primary nozzle and the secondary nozzle. The injection angle and the closing angle of the main nozzle are 90-210 degrees; the number of the auxiliary nozzles is 6, the injection angle and the closing angle of the first group of auxiliary nozzles are 90-210 degrees, the injection angle and the closing angle of the second group of auxiliary nozzles are 110-220 degrees, the injection angle and the closing angle of the third group of auxiliary nozzles are 140-235 degrees, the injection angle and the closing angle of the fourth group of auxiliary nozzles are 165-245 degrees, the injection angle and the closing angle of the fifth group of auxiliary nozzles are 185-255 degrees, and the injection angle and the closing angle of the sixth group of auxiliary nozzles are 205-265 degrees.
In the weaving process, the parameters are set in consideration of the texture and the interweaving points of the fiber cloth, and the twill fiber cloth finally woven by adopting the parameters has high breaking strength and quick infiltration time, and can achieve the effect equivalent to or even better than that of twill woven twill cloth. The twill cloth woven by selecting excessively high or excessively low technological parameters has poor performance, and simultaneously, the cloth cover defects and the like are more likely to occur.
Packaging and warehousing: and judging according to the contrast standard of the weaving information description condition of the cloth roll sheet, checking the information, packaging and warehousing.
In the case of weaving using glass fibers as a raw material, a sizing agent may be applied to the surface of the fibers before the twisting step. The sizing agent can effectively lubricate the surface of the glass fiber, can integrate hundreds of glass fiber monofilaments into one bundle, and can change the surface state of the glass fiber, so that the requirement on the processing performance of the subsequent process of the precursor can be met. The glass fiber can be glass fiber G series yarn.
Compared with the prior art, the twill weaving process for the fiber cloth has the following beneficial effects:
(1) the process solves the problems that the air jet loom can not produce the glass fiber cloth with high breaking strength, quick infiltration time and high gram weight.
(2) The fiber cloth woven by the process has the advantages of low air permeability, high impregnation speed, high breaking strength and the like, is wider in application range, and can meet the requirements of different customers on products.
(3) The invention also solves the technical problems that when the arrow shaft machine weaves the glass fiber cloth with high gram weight and high breaking strength, the yarn length is uneven when twisting the stranded yarn, and the friction of the glass fiber yarn has great influence on the cloth cover quality.
Other characteristic features and advantages of the invention will become apparent from the following description of embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention, in which like reference numerals are used to designate like elements, and the drawings in the following description are some, but not all embodiments of the invention, and will enable one of ordinary skill in the art to make and use the invention.
FIG. 1 shows a schematic step diagram of a fiber cloth twill weaving process according to the present invention;
FIG. 2 shows a front view of a fiber cloth woven according to the fiber cloth twill weaving process of the present invention;
figure 3 shows a cross-sectional view of a fiber cloth woven according to the fiber cloth twill weaving process of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The invention discloses a twill weaving process of fiber cloth, which takes glass fiber G series yarns as an example and comprises the following steps:
a wire drawing process: coating a sizing agent on the surface of the glass fiber G series yarn;
a twisting process: unwinding and winding fiber precursor from a filament barrel to a cop barrel under the tension of 15-30N, and twisting the fiber precursor into a cop form; the twisting direction is Z twist or S twist, and the twist number is 28 twist.
A warping process: pulling a certain number of arranged cone yarns from a creel to a machine head, coiling the cone yarns on a warp beam, and setting the tension of single yarns to be 20-30N and the winding tension to be 1500-2500N;
sizing: leading out warp yarns on a warping shaft by using a sizing machine, and sizing the warp yarns in a sizing liquid; the linear speed of the sizing machine is 70-80 m/min, the sizing rate is 2 +/-0.5%, the temperature of the sizing machine is 320-340 ℃, and the pressure of a pressing roller is 14-22 kN;
drawing-in process: sequentially passing the warp through a dropper, a harness wire and a reed;
weaving: adopting an air jet loom, setting a start and end weft insertion angle of 90 +/-10-210 +/-10 degrees, an opening time of 355-360 degrees, a beating-up angle of 175-185 degrees, a let-off tension of 30-60 kg, a palm frame height of 12.8-13.4 cm, weft density teeth of 12-14T and a leveling time of 345-355 degrees; and setting the injection angle and the closing angle of the main nozzle and the auxiliary nozzle, and interweaving warp yarns and weft yarns into cloth. Preferably, the opening time is 360 °, the beat-up angle is 180 °, and the leveling time is 350 °.
The injection angle and the closing angle of the main nozzle are 90-210 degrees; the number of the auxiliary nozzles is 6, the injection angle and the closing angle of the first group of auxiliary nozzles are 90-210 degrees, the injection angle and the closing angle of the second group of auxiliary nozzles are 110-220 degrees, the injection angle and the closing angle of the third group of auxiliary nozzles are 140-235 degrees, the injection angle and the closing angle of the fourth group of auxiliary nozzles are 165-245 degrees, the injection angle and the closing angle of the fifth group of auxiliary nozzles are 185-255 degrees, and the injection angle and the closing angle of the sixth group of auxiliary nozzles are 205-265 degrees.
Specific examples of the fiber cloth twill weaving process according to the present invention are listed below.
TABLE 1 specific Process parameters for the examples
Test example
Test example 1
The specific process parameters of the twill weaving process are researched through experiments, and the performances of products under different process parameters are respectively compared. Table 2 shows the process parameters during weaving of the comparative example.
Table 2 comparative example process parameters
| Parameter(s) | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 |
| Winding tension (N) | 1400 | 2700 | 1200 | 3000 |
| Sizing machine linear velocity (m/min) | 68 | 80 | 60 | 85 |
| Sizing percentage (%) | 1.2 | 2.8 | 2 | 1.4 |
| Slasher temperature (. degree. C.) | 115 | 110 | 260 | 380 |
| Squeezing roll pressure (kN) | 16 | 24 | 10 | 20 |
| Initial angle of weft insertion (°) | 92 | 95 | 85 | 100 |
| Opening time (°) | 340 | 330 | 340 | 350 |
| Beating-up angle (°) | 170 | 180 | 185 | 165 |
| Palm frame height (cm) | 13.2 | 12.8 | 12 | 15 |
| Weft density tooth (T) | 15 | 12.4 | 11 | 16 |
| Hedging time (°) | 340 | 355 | 340 | 350 |
Table 3 shows the comparison of the technical indexes of the twill fabrics of comparative example and examples 1 to 4 of the present invention.
TABLE 3 comparison of technical indexes of twill cloth
As can be seen from the comparative data in Table 3, the breaking strength and the impregnation time of the twill glass fiber cloth produced by adopting the twill weaving process parameters of the invention are obviously superior to those of the comparative example.
Test example 2
A plurality of batches of the glass fiber fabrics are respectively extracted, and the impregnation time of the plain weave glass fiber fabrics woven by the air jet loom and the impregnation time of the twill weave glass fiber fabrics woven by the process are compared, and are specifically shown in table 4.
TABLE 4 comparison of impregnation time of plain weave and twill weave fiberglass cloth
| Test batches | Plain weave fiberglass cloth | Twill weave glass fiber cloth |
| 1 | 13′66″ | 13′95″ |
| 2 | 16′ | 14′22″ |
| 3 | 16′33″ | 14′34″ |
| 4 | 15′33″ | 14′67″ |
| 5 | 15′52″ | 14′81″ |
| 6 | 15′71″ | 13′68″ |
| 7 | 14′65″ | 14′52″ |
| 8 | 16′14″ | 13′87″ |
| 9 | 15′80″ | 14′63″ |
| 10 | 16′14″ | 14′45″ |
It can be seen that the impregnation time of the twill weave glass fiber cloth produced by the twill weaving process is obviously shorter than that of plain weave glass fiber cloth.
Test example 3
Meanwhile, the twill glass fiber cloth woven by the air jet loom is compared with the twill glass fiber cloth woven by an arrow shaft machine. See table 5 for details.
TABLE 5 twill comparison of different looms
From the comparison, the twill cloth woven by the air jet loom of the invention is obviously superior to the twill cloth woven by an arrow shaft machine in breaking strength under the condition that the gram weight and the thickness reach the design values, and the impregnation time of the twill cloth woven by the arrow shaft machine with resin is far shorter than that of the twill cloth woven by the arrow shaft machine.
In conclusion, the twill weaving process for the fiber cloth provided by the invention adopts the air jet loom to adjust the twill woven by the multi-arm opening, and has the advantages of high gram weight, high breaking strength and good flexibility; the soaking time with resin is short, the product quality can meet the customer requirements, and the high-end application field of the glass fiber cloth can be met; meanwhile, the process can improve the running efficiency of the weaving machine, reduce the workload and improve the efficiency.
The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A fiber cloth twill weaving process is characterized by comprising the following steps:
a warping process: pulling a certain number of arranged cop tubes to a machine head from a creel and coiling the cop tubes on a warp beam; setting the single yarn tension of the cop to be 20-30N, and the winding tension to be 1500-2500N;
sizing: leading out warp yarns on the warp beam by using a sizing machine, and immersing the warp yarns into the size for sizing;
drawing-in process: sequentially enabling the sized warp yarns to pass through a dropper, a harness wire and a reed;
weaving: adopting an air jet loom, setting the opening time of the air jet loom to be 355-360 degrees, setting the height of a palm frame to be 12.8-13.4 cm, setting the heald leveling time to be 345-355 degrees, setting the beating-up angle to be 175-185 degrees, setting the warp let-off tension to be 30-60 kg, and setting the weft density teeth to be 12-14T; adjusting the multi-arm opening of the air jet loom, and weaving the warp yarns and the weft yarns one above the other;
in the weaving process, setting the weft insertion angle of the beginning and the end to be 90 +/-10 degrees-210 +/-10 degrees, and simultaneously setting the injection angle and the closing angle of the main nozzle and the auxiliary nozzle; the injection angle and the closing angle of the main nozzle are 90-210 degrees; the number of the auxiliary nozzles is 6, the spraying angle and the closing angle of the first group of auxiliary nozzles are 90-210 degrees, the spraying angle and the closing angle of the second group of auxiliary nozzles are 110-220 degrees, the spraying angle and the closing angle of the third group of auxiliary nozzles are 140-235 degrees, the spraying angle and the closing angle of the fourth group of auxiliary nozzles are 165-245 degrees, the spraying angle and the closing angle of the fifth group of auxiliary nozzles are 185-255 degrees, and the spraying angle and the closing angle of the sixth group of auxiliary nozzles are 205-265 degrees;
the fiber used in the twill weaving process of the fiber cloth is glass fiber G series yarn.
2. The fiber cloth twill weaving process according to claim 1, wherein in the slashing process, the linear speed of a slasher is set to be 70-80 m/min, the sizing rate is 2 +/-0.5%, the temperature of the slasher is 320-340 ℃, and the pressure of a press roll is 14-22 kN.
3. The fiber cloth twill weaving process according to claim 1, characterized by further comprising the following steps before the warping process:
a twisting process: unwinding and winding the fiber precursor from a filament barrel to a cop barrel under the tension of 15-30N, and twisting into a cop form.
4. The process of weaving a fiber cloth twill according to claim 3, further comprising the following steps before the twisting step:
a wire drawing process: and coating the surface of the glass fiber with a sizing agent.
5. The fiber cloth twill weaving process according to claim 4, wherein the cop is conditioned for 12 to 24 hours between the twisting step and the warping step.
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