Roller type laying device and method for reducing yarn hairiness in sizing and drying process

Abstract

The present application relates to a kind of roller type sticking device and method for reducing sizing hairiness in sizing drying process, comprising several pre-drying cylinders and combined drying cylinders arranged upstream and downstream along the moving direction of sizing, a hairiness sticking roller is arranged on the downstream side of pre-drying cylinder, the hairiness sticking roller is parallel to the pre-drying cylinder, both ends of the hairiness sticking roller are connected to a bracket respectively, the hairiness sticking roller is drivingly connected to a driving motor, and the hairiness sticking roller rotates under the driving of the driving motor.The present application uses the hairiness sticking roller to stick the hairiness on the surface of sizing with a certain moisture regain, so that the hairiness is bonded with the viscous sizing on the surface of sizing, thereby sticking on the surface of sizing, and further controlling the amount of hairiness on the surface of sizing during the drying process after the sizing leaves the sizing tank, further reducing the amount of hairiness on the surface of finished sizing, and improving the quality of sizing.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textiles, and particularly relates to a roller type sticking device and method for reducing sizing hairiness in the sizing and drying process. BACKGROUND

[0002] After sizing, part of the sizing liquid is coated on the surface of the yarn body, which can effectively stick the hairiness, thereby improving the wear resistance of the yarn surface and increasing the weaving efficiency. With the increase of the speed of air jet looms and rapier looms and the production demand for high-count and high-density fabrics, the requirements for the yarn performance during weaving are also increasing. If the sizing hairiness is too much, it will not only increase the breakage rate and reduce the weaving efficiency, but also easily form defects on the fabric surface, thereby affecting the fabric quality.

[0003] At present, the sizing hairiness can be reduced from three aspects, i.e., the original yarn, the sizing liquid and sizing: (1) the sizing hairiness of the original yarn can be reduced by improving the spinning process and adding additional devices; (2) the sizing hairiness can be effectively reduced by selecting environmentally friendly sizing materials with good sizing film performance and high adhesion; and (3) the sizing process quality can be improved by means such as pre-wetting, double sizing tank, immersion and pressure sizing type, high-pressure sizing, wet division, post-waxing, etc., so as to reduce the sizing hairiness.

[0004] On the sizing machine, the sizing yarn leaves the sizing roller with a constant sizing moisture content, which is generally about 140%, i.e., the sizing liquid accounts for about 1.4 times the dry weight of the original yarn. After the sizing yarn enters the drying room and contacts the drying cylinder, the sizing liquid evaporates with the water vaporization until the sizing yarn is dried to the specified sizing moisture content.

[0005] Under the current process, after the sizing yarn leaves the sizing tank, there is no way to further control the amount of hairiness on the surface of the sizing yarn. Therefore, under the current technical level, it is difficult to further reduce the amount of hairiness on the surface of the sizing yarn. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a roller type sticking device for reducing sizing hairiness in the sizing and drying process, so as to solve the technical problem that the amount of hairiness on the surface of the sizing yarn cannot be further controlled after the sizing yarn leaves the sizing tank.

[0007] To solve the above technical problem, the technical solution adopted by the present application is that the roller type sticking device for reducing sizing hairiness in the sizing and drying process comprises a plurality of pre-drying drying cylinders and a merging drying cylinder arranged upstream and downstream along the moving direction of the sizing yarn, a hairiness sticking roller is arranged on the downstream side of the pre-drying drying cylinder, the hairiness sticking roller is parallel to the pre-drying drying cylinder, the two ends of the hairiness sticking roller are connected to a support respectively, the hairiness sticking roller is in transmission connection with a driving motor, and the hairiness sticking roller rotates under the driving of the driving motor.

[0008] As a preferred embodiment, the drive motor is fixedly connected to a base, a drive pulley is fixedly connected to the output shaft of the drive motor, a driven pulley is fixedly sleeved on the hair-attaching roller, and the drive pulley and the driven pulley are connected by a synchronous belt drive.

[0009] As a preferred embodiment, the base is fixedly connected to a bracket via a support beam. The base has multiple elongated holes, the arrangement of which is perpendicular to the axial direction of the output shaft of the drive motor, and the major diameter direction of each elongated hole is also perpendicular to the axial direction of the output shaft of the drive motor. The base is adjustablely connected to the support beam using bolts, which pass through the elongated holes and are threadedly connected to the support beam.

[0010] As a preferred embodiment, the hair-feathering roller includes a tubular roller sleeve and a roller shaft coaxially inserted inside the roller sleeve. Both ends of the roller sleeve are rotatably connected to the roller shaft via bearings, and the bearings are fixedly connected to the roller shaft. Both ends of the roller shaft extend outside the roller sleeve, and both ends of the roller shaft are detachably fixedly connected to two brackets. The passive pulley is fixedly sleeved on the outer wall of one end of the roller sleeve.

[0011] As a preferred embodiment, each of the brackets is fixedly connected to a connecting seat on the side facing the roller shaft. The connecting seat has an assembly hole that mates with the end of the roller shaft. The connecting seat also has a locking hole that is perpendicular to the assembly hole and communicates with the assembly hole. A set screw is threaded into the locking hole. The two ends of the roller shaft are respectively inserted into the assembly holes on the two brackets and locked by the set screw.

[0012] As a preferred embodiment, the outer surface of the roller sleeve is made of an anti-stick material.

[0013] A further technical problem to be solved by the present invention is to provide a method for reducing the hairiness of sized yarn during the sizing and drying process, thereby solving the technical problem that the amount of hairiness on the surface of the sized yarn cannot be further controlled after it leaves the sizing tank.

[0014] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for reducing yarn hairiness during the sizing and drying process, comprising the following specific steps:

[0015] a. The sized yarn is dried using a roller-type applicator that reduces yarn hairiness during the sizing and drying process. The rotation direction and speed of the hair applicator roller are controlled by a drive motor to keep the total friction length within the range of 0 to 500 mm.

[0016] b. Obtain the hairiness quality index of the sized yarn after it has been subjected to the hairiness-adhesive roller by using a hairiness quality detection device.

[0017] c. By adjusting the temperature of the pre-drying drum, the moisture regain when the sized yarn comes into contact with the hairy roller is changed. Based on the changing trend of the sized yarn hair quality, the adjustment of the pre-drying drum temperature is guided until the yarn hair quality reaches the optimal level.

[0018] d. Further adjust the rotation speed of the driving motor, change the total friction length, according to the change trend of the sizing yarn hairiness quality, feedback guide the adjustment of the rotation speed of the driving motor, until the yarn hairiness quality reaches the optimum.

[0019] As a preferred solution, in the step a, the total friction length refers to the total length of the friction effect of the hair laying roller on the yarn. Let L represent the total friction length, the unit is mm; r represents the radius of the hair laying roller, the unit is mm; θ represents the surrounding angle of the hair laying roller and the sizing yarn when the sizing yarn is in contact with the hair laying roller, the unit is °; v g represents the surface linear speed of the laying roller, the unit is mm / s; v s represents the sizing yarn speed, the unit is mm / s, then the calculation method of L is as follows:

[0020] a. When v g and v s are in the same direction, and v g >v s :

[0021]

[0022] b. When v g and v s are in the same direction, and v g ≤v s :

[0023]

[0024] c. When v g =0:

[0025]

[0026] d. When v g and v s are in opposite directions:

[0027]

[0028] The beneficial effects of the present application are: the present application utilizes the hair laying roller to carry out laying treatment on the surface hair of the sizing yarn with a certain moisture regain, so that the hair is bonded with the viscous sizing liquid on the sizing yarn surface, thereby being laid on the sizing yarn surface, and further controlling the sizing yarn surface hair amount during the drying process after the sizing yarn is separated from the sizing tank, further reducing the finished sizing yarn surface hair amount, and improving the sizing yarn quality.

[0029] The present application further utilizes the roller type sticking device to reduce the sizing yarn hairiness in the sizing drying process to dry, simultaneously adjusts the turning and rotating speed of the hairiness sticking roller, adjusts the temperature of the pre-drying drying cylinder, adopts the hairiness quality detection device to detect the sizing yarn hairiness quality, and guides the adjustment of the pre-drying drying cylinder temperature through the detection result, and finally realizes the optimization of the sizing yarn hairiness quality. BRIEF DESCRIPTION OF DRAWINGS

[0030] The specific embodiments of the present application will be further described in detail below in combination with the drawings, in which:

[0031] Figure 1 is a structural diagram of the roller type sticking device for reducing the sizing yarn hairiness in the sizing drying process according to the present application;

[0032] Figure 2 is a specific assembly structure diagram of the hairiness sticking roller according to the present application;

[0033] Figure 3 is a partial sectional structure diagram of the hairiness sticking roller according to the present application;

[0034] Figure 4 is an enlarged view of B part in Figure 3 ;

[0035] Figure 5 is an enlarged view of A part in Figure 2 ;

[0036] Figure 6 is a partial sectional structure diagram of the connecting seat shown in Figure 5 ;

[0037] Figures 1-6 : 1, sizing yarn, 2, pre-drying drying cylinder, 3, combined drying cylinder, 4, hairiness sticking roller, 4a, roller sleeve, 4b, roller shaft, 4c, bearing, 5, support, 6, driving motor, 7, base, 8, driving pulley, 9, driven pulley, 10, synchronous belt, 11, support beam, 12, long hole, 13, connecting seat, 14, assembly hole, 15, locking hole, 16, locking screw, 17, anti-sticking material. DETAILED DESCRIPTION

[0038] The specific embodiments of the present application will be further described in detail below in combination with the drawings, in which:

[0039] Example 1:

[0040] As Figures 1-6The illustrated roller sticking device for reducing sizing yarn hairiness in the sizing drying process comprises a plurality of pre-drying cylinders 2 and a combining drying cylinder 3 arranged along the downstream direction of the moving sizing yarn 1, a hairiness sticking roller 4 arranged on the downstream side of the pre-drying cylinder 2, the hairiness sticking roller 4 being parallel to the pre-drying cylinder 2, both ends of the hairiness sticking roller 4 being connected to a bracket 5, the hairiness sticking roller 4 being in transmission connection with a driving motor 6, and the hairiness sticking roller 4 being rotated by the driving motor 6.

[0041] In the embodiment, the pre-drying cylinder 2 and the combining drying cylinder 3 and their assembly manners are conventional technical means, and the pre-drying cylinder 2 and the combining drying cylinder 3 are usually rotatably connected to the frame, thus the specific assembly structure is not described herein.

[0042] In the embodiment, the driving motor 6 is fixedly connected to a base 7, a driving pulley 8 is fixedly connected to the output shaft of the driving motor 6, a driven pulley 9 is fixedly sleeved on the outer wall of one end of a roller sleeve 4a of the hairiness sticking roller 4, and the driving pulley 8 and the driven pulley 9 are in transmission connection through a synchronous belt 10. The synchronous belt 10 transmission can effectively improve the driving precision of the driving motor 6 on the rotating linear speed of the hairiness sticking roller 4, and the driving motor 6 is preferably a servo motor or a stepping motor. The high-precision rotating linear speed of the hairiness sticking roller 4 can ensure the consistency of the hairiness sticking effect of the hairiness sticking roller 4 on the sizing yarn surface.

[0043] In the embodiment, the base 7 is fixedly connected to the bracket 5 through a support beam 11, a plurality of long holes 12 are formed in the base 7, the arrangement direction of the plurality of long holes 12 is perpendicular to the axial direction of the output shaft of the driving motor 6, the long diameter direction of each long hole 12 is also perpendicular to the axial direction of the output shaft of the driving motor 6, the base 7 is adjustably connected to the support beam 11 through bolts, and the bolts are in threaded connection with the support beam 11 through the long holes 12.

[0044] Since the long holes 12 are formed in the base 7, when the bolts are loose, the position of the base 7 can be finely adjusted to facilitate the assembly of the synchronous belt 10, adjust the tension of the synchronous belt 10, and further ensure the synchronous transmission effect of the synchronous belt 10.

[0045] As shown in Figure 3 and Figure 4 The hairiness sticking roller 4 comprises a tubular roller sleeve 4a and a roller shaft 4b coaxially inserted into the roller sleeve 4a, both ends of the roller sleeve 4a are rotatably connected to the roller shaft 4b through bearings 4c, the bearings 4c are fixedly connected to the roller shaft 4b, both ends of the roller shaft 4b protrude out of the roller sleeve 4a, both ends of the roller shaft 4b are detachably fixedly connected to the two brackets 5, and the driven pulley 9 is fixedly sleeved on the outer wall of one end of the roller sleeve 4a.

[0046] The surface of the hairiness sticking roller 4 can be contaminated by the size liquid to form a hard size film after long-term use, which can increase the friction between the size yarn 1 and the surface of the hairiness sticking roller 4, and cause the surface wear of the size yarn 1. Therefore, the hairiness sticking roller 4 is regularly disassembled, cleaned and replaced. The roller sleeve 4a is rotationally connected to the roller shaft 4b, so that the two ends of the roller shaft 4b can be detachably connected to the support 5, thereby providing a technical basis for improving the convenience of disassembling and assembling the hairiness sticking roller 4.

[0047] As shown in Figure 5 and Figure 6 , one connecting seat 13 is fixedly connected to one side of each support 5 towards the roller shaft 4b. An assembly hole 14 is formed in the connecting seat 13 and matched with the end of the roller shaft 4b. A locking hole 15 is also formed in the connecting seat 13 and perpendicular to the assembly hole 14 and communicated with the assembly hole 14. A locking screw 16 is threadedly connected in the locking hole 15. The ends of the roller shaft 4b are respectively inserted into the assembly holes 14 in the two supports 5 and locked by the locking screw 16. When the hairiness sticking roller 4 needs to be disassembled and replaced, the locking screw 16 is loosened and the ends of the roller shaft 4b are pulled out of the assembly holes 14. In order to ensure that the roller shaft 4b can be pulled out of the assembly hole 14, the actual depth of the assembly hole 14 can be greater than twice the insertion depth of the roller shaft 4b.

[0048] In addition, the connecting seat 13 can also be detachably connected to the support 5 by bolts as shown in Figure 6 . The hairiness sticking roller 4 is disassembled by separating the connecting seat 13 from the support 5.

[0049] In order to reduce the possibility of contamination of the surface of the hairiness sticking roller 4 and as long as possible to prolong the maintenance cycle of the hairiness sticking roller 4, the outer surface of the roller sleeve 4a in the embodiment is coated with an anti-adhesion material 17 as shown in Figure 4 . The anti-adhesion material 17 can effectively reduce the adhesion effect of the size liquid on the surface of the hairiness sticking roller 4. The anti-adhesion material 17 is layered on the outer surface of the roller sleeve 4a.

[0050] The specific working process of the embodiment 1 is shown in the embodiments 2 and 3.

[0051] Embodiment 2:

[0052] The method for reducing the hairiness of the size yarn in the sizing and drying process comprises the following specific steps:

[0053] a. The size yarn is dried by using the roller sticking device for reducing the hairiness of the size yarn in the sizing and drying process as described in the embodiment 1. The direction and speed of the hairiness sticking roller 4 are controlled by the driving motor 6, and the total friction length is controlled in the range of 0-500 mm.

[0054] b. The hairiness quality index of the size yarn after the action of the hairiness sticking roller is obtained by the hairiness quality detection device.

[0055] c. By regulating the pre-drying cylinder temperature, the moisture regain of the sizing yarn when contacting the hair flattening roller is changed, according to the change trend of the sizing yarn hairiness quality, the regulation of the pre-drying cylinder temperature is fed back and guided until the sizing yarn hairiness quality reaches the optimum.

[0056] d. Further regulating the rotating speed of the driving motor, the total friction length is changed, according to the change trend of the sizing yarn hairiness quality, the regulation of the rotating speed of the driving motor is fed back and guided until the sizing yarn hairiness quality reaches the optimum.

[0057] Embodiment 3:

[0058] The method for reducing the sizing yarn hairiness in the sizing and drying process comprises the following specific contents:

[0059] On the basis of the above-mentioned embodiment 2, the embodiment further provides the calculation method of the total friction length. The total friction length in the above-mentioned embodiment 2 refers to the total length of the friction of the hair flattening roller to the yarn. Let L represent the total friction length, the unit is mm; r represents the radius of the hair flattening roller, the unit is mm; θ represents the surrounding angle of the hair flattening roller and the sizing yarn when contacting the hair flattening roller when the sizing yarn is static, the unit is °; v g represents the surface linear speed of the hair flattening roller, the unit is mm / s; v s represents the linear speed of the sizing yarn, the unit is mm / s, then the calculation method of L is as follows:

[0060] a. When v g and v s are in the same direction, and v g >v s :

[0061]

[0062] b. When v g and v s are in the same direction, and v g ≤v s :

[0063]

[0064] c. When v g =0:

[0065]

[0066] d. When v g and v s are in the opposite directions:

[0067]

[0068] The hairiness testing device used in Embodiment 2 and Embodiment 3 is YG173A yarn hairiness tester.

[0069] To verify the effect of the present application, the sizing hairiness test results are provided as reference in this embodiment.

[0070] The parameter settings of this test: the control group and the test group both use 14.6 tex yarn, and the sizing is performed on an XSY617-700 type sizing tester. The sizing parameters are set as follows: pre-pressing pressure 12 kN, high-pressure 8 kN, speed 10 m / min. In this embodiment, the hairiness sticking roller in the hairiness sticking device of the first test group has a diameter of 64 mm, the hairiness sticking roller and the speed ratio is 1 (the hairiness sticking roller linear speed is consistent with the sizing yarn speed), and the sizing yarn contacting the hairiness sticking roller has a moisture regain of 40%, 30%, 20%, 15%, and 10% respectively; the hairiness sticking roller in the hairiness sticking device of the second test group has a diameter of 64 mm, and the surrounding angle between the sizing yarn and the hairiness sticking roller in static state is 116.9°, the sizing yarn contacting the hairiness sticking roller has a moisture regain of 20%, and the hairiness sticking roller and the speed ratio is 1 (same direction), 0.5 (same direction), 0 (same direction), 0.25 (opposite direction), 0.5 (opposite direction), and 1 (opposite direction) respectively. The sizing liquid used is PVA-0588 with a mass fraction of 5%, and the sizing temperature is 50°.

[0071] Among them, the hairiness test results about the sizing yarn and the hairiness sticking roller contacting moisture regain are as follows:

[0072] In this test, the test item-moisture regain can be changed by adjusting the pre-drying cylinder temperature in step c, and the moisture regain can be measured by resistance method or capacitance method, preferably capacitance method, and the best is not contacting sizing yarn 1. The technology solution disclosed in the patent with the patent name of "sizing moisture regain detection system" (patent number: 2 00510026664.6) can be used to detect the moisture regain of the sizing yarn near the upstream side of the hairiness sticking roller 4.

[0073]

[0074] The hairiness test results about the sizing yarn and the hairiness sticking roller rubbing length are as follows:

[0075]

[0076] From the above test results, it can be seen that when the pre-drying cylinder 2 temperature and the driving motor 6 speed are adjusted, the hairiness sticking effect of the sizing yarn surface will be affected, therefore, the present application can further control the sizing yarn 1 surface hairiness during the drying process after the sizing yarn 1 is separated from the sizing trough, further reduce the sizing yarn 1 surface hairiness, and improve the sizing yarn 1 quality.

[0077] The above embodiments only illustrate the principles and effects of the present application, and some applied embodiments, but are not intended to limit the present application; it should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A method for reducing the yarn hairiness in the process of sizing and drying, characterized in that, It comprises the following specific steps: a. The sizing drying process is carried out by using the roller type sticking device to reduce the sizing yarn hairiness, the turning and rotating speed of the hairiness sticking roller is controlled by the driving motor, the total friction length is controlled in the range of 0-500mm; b. The hairiness quality index of the sizing yarn after the action of the hairiness sticking roller is obtained by the hairiness quality detection device; c. The pre-drying cylinder temperature is adjusted, the moisture regain of the sizing yarn when contacting with the hairiness sticking roller is changed, the adjustment of the pre-drying cylinder temperature is guided according to the change trend of the sizing yarn hairiness quality until the yarn hairiness quality reaches the optimum; d. The rotating speed of the driving motor is further adjusted, the total friction length is changed, the adjustment of the rotating speed of the driving motor is guided according to the change trend of the sizing yarn hairiness quality until the yarn hairiness quality reaches the optimum. The roller type sticking device for reducing the sizing yarn hairiness in the sizing drying process comprises a plurality of pre-drying cylinders (2) and a combined drying cylinder (3) arranged upstream and downstream along the moving direction of the sizing yarn (1), a hairiness sticking roller (4) is arranged on the downstream side of the pre-drying cylinder (2), the hairiness sticking roller (4) is arranged parallel to the pre-drying cylinder (2), the two ends of the hairiness sticking roller (4) are connected to a support (5) respectively, the hairiness sticking roller (4) is drivingly connected with a driving motor (6), and the hairiness sticking roller (4) rotates under the driving of the driving motor (6). The total friction length in step a refers to the total length of the friction action of the hairiness sticking roller on the yarn.

2. A method of reducing sizing yarn hairiness during the sizing and drying process as claimed in claim 1 wherein, Let L represent the total friction length in mm; r represent the radius of the hair laying roller in mm; θ represent the angle of the wrap of the yarn with the hair laying roller at rest in °; v g represents the surface speed of the hair laying roller in mm / s; v s represents the speed of the yarn in mm / s, then the calculation method of L is as follows: a. when v g with v s the same direction, and v g > v s : b. when v g with v s the same direction, and v g ≤ v s : c. when v g = 0: d. when v g with v s direction opposite:

3. A method of reducing sizing yarn hairiness during the process of sizing and drying as claimed in claim 1 wherein, The driving motor (6) is fixedly connected to a base (7), a driving pulley (8) is fixedly connected to the output shaft of the driving motor (6), a driven pulley (9) is fixedly sleeved on the hairiness sticking roller (4), and the driving pulley (8) and the driven pulley (9) are drivingly connected through a synchronous belt (10).

4. A method of reducing sizing yarn hairiness during the sizing and drying process as claimed in claim 3 wherein, The base (7) is fixedly connected with a support (5) through a support beam (11), a plurality of long holes (12) are formed in the base (7), the arrangement direction of the plurality of long holes (12) is perpendicular to the axial direction of the output shaft of the driving motor (6), the long diameter direction of each long hole (12) is also perpendicular to the axial direction of the output shaft of the driving motor (6), the base (7) is adjustably connected to the support beam (11) through bolts, and the bolts are threadedly connected with the support beam (11) through the long holes (12).

5. A method of reducing sizing yarn hairiness during the sizing and drying process as claimed in claim 3 wherein, The hairiness sticking roller (4) comprises a tubular roller sleeve (4a) and a roller shaft (4b) coaxially inserted into the roller sleeve (4a), the two ends of the roller sleeve (4a) are rotatably connected with the roller shaft (4b) through bearings (4c), the bearings (4c) are fixedly connected to the roller shaft (4b), the two ends of the roller shaft (4b) extend out of the roller sleeve (4a), the two ends of the roller shaft (4b) are detachably fixedly connected with the two supports (5), and the driven pulley (9) is fixedly sleeved on the outer wall of one end of the roller sleeve (4a).

6. A method of reducing sizing yarn hairiness during the sizing and drying process as claimed in claim 5 wherein, One side of any of the brackets (5) towards the roller shaft (4b) is fixedly connected with a connecting seat (13), the connecting seat (13) is provided with an assembly hole (14) matched with the end of the roller shaft (4b), the connecting seat (13) is also provided with a locking hole (15) perpendicular to the assembly hole (14) and communicated with the assembly hole (14), the locking hole (15) is threadedly connected with a locking screw (16), the two ends of the roller shaft (4b) are respectively inserted into the assembly holes (14) in the two brackets (5) and locked by the locking screw (16).

7. A method of reducing sizing yarn hairiness during the sizing and drying process as claimed in claim 5 wherein, The outer surface of the roller sleeve (4a) is made of anti-sticking material (17).

Images