Anti-stick reduced wind hydrophilic roller and tow guiding device

Abstract

The application provides an anti-sticking and winding-reducing hydrophilic roller and a tow guiding device, and relates to the field of tow guiding. The present application discloses an anti-sticking and winding-reducing hydrophilic roller and a tow guiding device, and relates to the field of tow guiding. The water guiding section is provided with micro-texture to obtain hydrophilicity, and the liquid in the guiding section contacted by the tow is guided by capillary action, the water film formed at the position of the guiding section is destroyed, the liquid attached to the roller body in the process of running the tow is reduced, the generation of the hairiness is reduced, the adhesion of the hairiness on the surface of the roller body is reduced, and the winding problem is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tow guiding, in particular to an anti-sticking and winding-reducing hydrophilic roller and a tow guiding device. BACKGROUND

[0002] In the production of textile chemical fibers, the guide roller is a key component in the process of tow conveying, and its main function is to guide the tow to travel and ensure that the tow maintains stable tension and path during processing. The multi-stage washing section is to remove the chemical solvents contained in the tow inside and outside step by step. After the tow is washed with water, the downstream guide roller guides the tow with the washing liquid. When too much water is attached to the guide roller, on the one hand, it will make the surface of the guide roller slippery, reducing the friction between the guide roller and the tow. The reduction of friction may affect the stable travel of the tow, making it prone to deviation or shaking. On the other hand, the fibers inside the tow are prone to cracks due to stress concentration, resulting in lint. When the tow deviates or shakes on the guide roller, the fibers inside the tow may be broken due to mutual friction or collision, producing more lint, which is prone to adhere to the guide roller with surface-attached water, and the winding around the roller is caused by the rotation of the guide roller, resulting in a decrease in product quality.

[0003] A polyester home textile fabric single-sided hydrophilic finishing equipment and method is disclosed in Chinese patent (publication number: CN110130026B), which improves the finishing equipment from the aspect of liquid squeezing device and finishing process, and performs single-sided hydrophilic finishing on pure polyester home textile fabric. The improvement is focused on the hydrophilicity of the fabric, not the finishing of the tow. In the process of conveying the tow, if a drainage groove is directly arranged on the surface of the guide roller, when the speed of the guide roller and the tow is inconsistent, it will cause scraping between the guide roller and the tow, causing damage to the tow, which will increase the lint and exacerbate the problem of lint hooking, resulting in a decrease in the quality of the tow. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art, and to provide an anti-sticking and winding-reducing hydrophilic roller and a tow guiding device. The water guide section and the guide section are selectively arranged on the surface of the roller body. The water guide section is processed with micro-texture to obtain hydrophilicity, and the liquid in the guide section contacted by the tow is drained by capillary action, the water film formed at the position of the guide section is destroyed, the liquid attached to the roller body during the operation of the tow is reduced, the generation of lint is reduced, the adhesion of lint on the surface of the roller body is reduced, and the winding problem is reduced.

[0005] The first purpose of the present application is to provide an anti-sticking and winding-reducing hydrophilic roller, which adopts the following technical scheme:

[0006] The roll body is divided into a water guide section, a guide section and a water guide section along the axial direction, the outer circumferential surface of the guide section is a guide surface for the contact of the fiber bundle, the outer circumferential surface of the water guide section is provided with a first micro-texture area and a second micro-texture area which are continuously distributed along the axial direction of the roll body, the first micro-texture area is located at one end of the water guide section close to the guide section, the first micro-texture area forms a capillary effect from the guide section to the water guide section, and the second micro-texture area forms a hydrophilic surface.

[0007] Further, the first micro-texture area and the second micro-texture area are composed of a groove array processed on the outer circumferential surface of the roll body, the distribution density of the grooves corresponding to the first micro-texture area is greater than the distribution density of the grooves corresponding to the second micro-texture area.

[0008] Further, the cross-sectional size of the grooves corresponding to the first micro-texture area is smaller than the cross-sectional size of the grooves corresponding to the second micro-texture area.

[0009] Further, along the axial direction of the roll body, the first micro-texture area is located between the second micro-texture area and the guide section, and the grooves corresponding to the first micro-texture area are in communication with the grooves corresponding to the second micro-texture area.

[0010] Further, the roll body is matched with a rotating support, the rotating support restricts the position of the roll body to form a cantilever structure, the water guide section and the guide section are located in the cantilever area of the roll body, and a shaft shoulder is arranged between the water guide section and the rotating support.

[0011] Further, along the axial direction of the roll body, for the water guide section located on the side of the guide section away from the rotating support, one end of the second micro-texture area extends to the first micro-texture area, and the other end extends to the end of the roll body.

[0012] Further, along the axial direction of the roll body, for the water guide section located between the guide section and the rotating support, one end of the second micro-texture area extends to the first micro-texture area, and the other end extends to the shaft shoulder of the roll body.

[0013] Further, the axial lengths of the water guide sections on both sides of the guide section are equal.

[0014] The second object of the application is to provide a fiber guide device using the anti-sticking and winding-reducing hydrophilic roll as described in the first object.

[0015] Further, the device further comprises a driving element and a liquid collecting tank, the liquid collecting tank is located below the anti-sticking and winding-reducing hydrophilic roll and receives the liquid discharged from the hydrophilic surface of the anti-sticking and winding-reducing hydrophilic roll, and the driving element is connected to the anti-sticking and winding-reducing hydrophilic roll through a transmission element to drive the rotation of the anti-sticking and winding-reducing hydrophilic roll.

[0016] Compared with the prior art, the application has the advantages and positive effects that:

[0017] (1) In order to solve the problem of hairiness and the problem of hairiness sticking and winding around the roller caused by too much liquid adhering to the surface of the roller during the current tow conveying process, a water guide section and a guide section are selectively arranged on the surface of the roller, the water guide section is processed with micro-texture to obtain hydrophilicity, and the liquid contacted by the tow is guided to the guide section by capillary action, the water film formed at the position of the guide section is destroyed, the liquid adhering to the roller during the operation of the tow is reduced, thereby reducing the generation of hairiness and the adhesion of hairiness on the surface of the roller, and the problem of winding around the roller is reduced.

[0018] (2) The water guide section is divided into a first micro-texture area and a second micro-texture area, the first micro-texture area near the distribution position of the tow is used to form capillary action to absorb the liquid in the distribution area of the tow on the guide section, the liquid is guided to the hydrophilic surface formed in the second micro-texture area to converge, the amount of liquid in the distribution area of the tow is reduced, thereby reducing the adhesion of the hairiness of the tow to the surface of the roller, and the guiding efficiency and the conveying effect are improved.

[0019] (3) The guide section of the roller is a smooth contact surface, which avoids the problem of scratching the tow and hooking the hairiness caused by opening the water guide groove on the guide section, the capillary action of the first micro-texture area is used to realize the adsorption of water, and the excess liquid is directionally drained, thereby reducing the winding around the roller, prolonging the continuous production time, and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application given below, make an explanation of the application, and do not constitute an improper limitation of the application.

[0021] Figure 1 is a schematic view of the anti-sticking and winding reduction hydrophilic roller installed in the tow guide device in embodiments 1 and 2 of the application.

[0022] Figure 2 is a schematic view of the capillary action of the micro-groove array on the surface of the anti-sticking and winding reduction hydrophilic roller in embodiments 1 and 2 of the application.

[0023] In the figure, 1. driving mechanism, 2. roller, 3. tow, 4. reagent tank, 5. liquid collection tank, 6. water guide section, 7. laser processing system, 8. liquid, 9. groove, 10. groove array. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] In a typical embodiment of the application, as shown in Figures 1-2 , an anti-sticking and winding reduction hydrophilic roller is proposed.

[0026] In the textile chemical fiber industry, during the conveying of the fiber bundle 3, the hair generated by the stress concentration and scraping in the fiber bundle 3 adheres to the surface of the guide roller, causing winding accumulation. When the area of the guide roller in contact with the fiber bundle 3 is in the liquid 8, the adhesion of the hair on the guide roller will be aggravated. During the processing of the fiber bundle 3, multiple stages will cause the fiber bundle 3 to be immersed in the liquid 8, resulting in the fiber bundle 3 carrying the liquid 8 to contact the guide roller during the conveying process, such as the washing stage, the drafting stage, the sizing stage, etc. The amount of liquid 8 adhering to the guide roller is relatively large, and the winding problem occurs frequently. Processing the winding will cause the production time to be prolonged. Based on this, the embodiment provides an anti-adhesion and winding reduction hydrophilic roller. The guide section of the roller body 2 is distributed to contact and convey the fiber bundle 3. The water guide section 6 is arranged outside the guide section. The grooves 9 are processed on the water guide section 6 to form the groove array 10. The microtexture formed by the groove array 10 can form a capillary effect and a hydrophilic surface. The liquid 8 carried by the fiber bundle 3 in contact with the guide section is drained, the amount of liquid 8 in the guide section area is reduced, the adhesion of the hair of the fiber bundle 3 on the surface of the guide section of the roller body 2 is reduced, and the winding of the roller is reduced.

[0027] Referring to Figure 1 , the anti-adhesion and winding reduction hydrophilic roller includes a roller body 2. The roller body 2 can be installed on an external rack through a rotating support and connected to a driving mechanism 1. The roller body 2 is driven to rotate by the driving mechanism 1, which meets the bearing and conveying requirements of the fiber bundle 3. The roller body 2 is divided into water guide sections 6, a guide section, and water guide sections 6 along the axial direction, that is, the guide section is located between the two water guide sections 6. The axial length of the water guide section 6 arranged on the two sides of the guide section can be equal. The liquid 8 in the guide section can be guided and discharged through the water guide section 6 on both sides of the guide section, thereby improving the efficiency of discharging the liquid 8.

[0028] The outer circumferential surface of the guide section is a guide surface for the fiber bundle 3 to contact. The outer circumferential surface of the guide section is a smooth surface. The smoothness of the outer circumferential surface of the guide section is not affected by the grooves 9 and the structures such as protrusions arranged on the outer circumferential surface. At the same time, the hair generated by the scraping of the fiber bundle 3 is reduced, and the stability during conveying is ensured.

[0029] The outer circumferential surface of the water guide section 6 is provided with a first microtexture area and a second microtexture area continuously distributed along the axial direction of the roller body 2. The first microtexture area is located at one end of the water guide section 6 close to the guide section. The first microtexture area forms a capillary effect from the guide section to the water guide section 6. The liquid 8 film formed by the liquid 8 carried by the fiber bundle 3 on the guide section is adsorbed by the capillary effect, and the adsorbed liquid 8 is guided to the second microtexture area. The second microtexture area forms a hydrophilic surface. The liquid 8 is gathered into a group and then dripped and discharged, thereby reducing the amount of liquid 8 carried by the fiber bundle 3 in contact with the guide section.

[0030] In the embodiment, as Figure 1As shown, the first micro-texture region and the second micro-texture region are formed by grooves 9 machined on the outer circumferential surface of the roller body 2, the distribution density of the grooves 9 corresponding to the first micro-texture region is greater than the distribution density of the grooves 9 corresponding to the second micro-texture region. The cross-sectional size of the grooves 9 corresponding to the first micro-texture region is smaller than the cross-sectional size of the grooves 9 corresponding to the second micro-texture region.

[0031] The outer circumferential surface of the roller body 2 is machined by the laser machining system 7, and the first micro-texture region and the second micro-texture region are machined with micron-level to sub-micron-level grooves 9. Specifically, picosecond laser or femtosecond laser is used for groove 9 machining, the groove 9 size of the first micro-texture region can be configured to be 5-30 μm, and the groove 9 size of the second micro-texture region can be configured to be 50-100 μm. The grooves 9 can have a rectangular cross-section or other special-shaped cross-section, and the corresponding cross-sectional width is within the above size range, forming a strip or net distribution on the distribution area of the roller body 2 surface.

[0032] Compared with the method of coating a coating on the guide section, the coating avoids contamination of the filament 3, and the liquid 8 collected by the second micro-texture region can be recycled or returned. For example, when the liquid 8 is a chemical solvent, the chemical solvent can be collected and returned to the corresponding reagent tank 4; when the liquid 8 is water, it can be recycled and reused, which is environmentally friendly.

[0033] Figure 2 As shown in the schematic diagram of the capillary action of the groove array 10 of the first micro-texture region of the anti-sticking and winding-reducing hydrophilic roller surface, the sum σ of the surface tension components of the grooves 9 of the first micro-texture region in the direction of the grooves 9 is greater than the sum F of the molecular cohesive forces of the liquid 8, so the liquid 8 is attracted by the hydrophilic surface of the first micro-texture region and the second micro-texture region and flows along the grooves 9. Wherein σ = σ1 + σ2 + … + σ n-1 +σ n , F = F1 + F2 + … + F n-1 +F n .

[0034] As Figure 1 shown, for the installation of the roller body 2, a stepped shaft is formed on the roller body 2, the small-diameter section of the stepped shaft serves as the installation section, and the large-diameter section serves as the main working part to distribute the water guide section 6 and the guide section. The installation section is installed on the rotating support through a bearing to maintain the position of the roller body 2. Specifically, the rotating support constrains the position of the roller body 2 to form a cantilever structure of the roller body 2, and the water guide section 6 and the guide section are located in the cantilever area of the roller body 2. A shaft shoulder is provided between the water guide section 6 and the rotating support, which can serve as the end of one of the water guide sections 6. When the bearing is installed, the shaft shoulder can also serve as the positioning shaft shoulder of the bearing.

[0035] The driving mechanism 1 can adopt a motor, such as a servo motor, a stepping motor, etc. The driving mechanism 1 distributes power to the roller body 2 through a gear box, a synchronous belt mechanism, etc. It can be understood that the same motor can form multiple output ends through a gear box, and simultaneously drive multiple roller bodies 2 to rotate. By configuring the transmission ratio between the gear box and the motor, the rotational speeds of the multiple roller bodies 2 are different, which meets different conveying requirements.

[0036] Along the axial direction of the roller body 2, for the water guide section 6 located on the side of the guide section away from the rotating support, one end of the second micro-texture area extends to the joint with the first micro-texture area, and the other end extends to the end of the roller body 2, which can guide the liquid 8 to the end of the roller body 2 away from the rotating support, and then drop and discharge after gathering the water body into a group.

[0037] Along the axial direction of the roller body 2, for the water guide section 6 located between the guide section and the rotating support, one end of the second micro-texture area extends to the joint with the first micro-texture area, and the other end extends to the shaft shoulder of the roller body 2, which guides the liquid 8 to the shaft shoulder position of the roller body 2, and then drops and discharges after gathering into a group.

[0038] In this embodiment, the axial length of the first micro-texture area is less than the axial length of the second micro-texture area, and the axial length corresponding to the first micro-texture area is close to the width of the single filament bundle 3, which is about 30mm-60mm.

[0039] Although the process targets of different sections and the chemical solvents used are different, the effects of the anti-adhesion and winding reduction hydrophilic roller are similar, that is, to direct and quickly guide the excess liquid 8, reduce the adhesion of the filament bundle 3 to the surface of the roller body 2, reduce winding, prolong continuous production time, and improve production efficiency.

[0040] In this embodiment, the application scenarios of the anti-adhesion and winding reduction hydrophilic roller are described.

[0041] (1) The guide roller of the water washing section adopts the anti-adhesion and winding reduction hydrophilic roller

[0042] The multi-stage water washing section is to remove the chemical solvents contained in the inside and outside of the filament bundle 3 step by step. The first micro-texture area and the second micro-texture area of the water guide section 6 on the surface of the anti-adhesion and winding reduction hydrophilic roller form a multi-stage microstructure, which helps to remove the water on the surface of the running filament bundle 3 in time, avoids the surface of the filament bundle 3 from containing more chemical solvents when it reaches the next stage of the water washing tank, and improves the water washing efficiency.

[0043] (2) The guide roller of the drafting section adopts the anti-adhesion and winding reduction hydrophilic roller

[0044] The drawing section generates a drawing force on the running filament 3 by setting different roller speeds for the same group of rollers 2, thereby improving the orientation of the molecular chains in the filament 3, causing it to lengthen and gain a certain strength. During this process, residual chemical solvents inside the filament 3 are discharged. If not treated in time, the solvent can easily re-adhere to the surface of the running filament 3 as the rollers 2 rotate. Through the capillary action of the water guiding sections 6 on both sides of the guide section of the roller 2, the residual solvent can be guided to the edge of the roller 2 in time, reducing its resistance to the change of the orientation of the molecular chains inside the filament 3.

[0045] (3) The guide rollers in the sizing section are made of anti-sticking, anti-winding, and hydrophilic rollers.

[0046] After the previous process, the filament bundle 3 has been shaped. The sizing process is to increase the hydrophilicity of the surface of the filament bundle 3 and reduce static electricity. This process results in the filament bundle 3 having strong hydrophilicity when it exits the sizing system, and a large amount of sizing agent (hydrophilic solvent) adhering to its surface. The water guiding section 6 on the surface of the roller body 2 facilitates the discharge of the sizing agent, reduces the working pressure of the pressure roller, and reduces the amount of chemical solvent or moisture on the surface of the filament bundle 3 before it enters the next stage (drying).

[0047] Example 2

[0048] In another embodiment of the present invention, such as Figures 1-2 As shown, a filament bundle 3 guiding device is proposed.

[0049] The anti-adhesion and anti-winding hydrophilic roller as described in Example 1 also includes a driving element and a liquid collection tank 5. The liquid collection tank 5 is located below the anti-adhesion and anti-winding hydrophilic roller and receives the liquid 8 discharged from the hydrophilic surface of the anti-adhesion and anti-winding hydrophilic roller. The driving element is connected to the anti-adhesion and anti-winding hydrophilic roller through a transmission element to drive the anti-adhesion and anti-winding hydrophilic roller to rotate.

[0050] The drive mechanism 1 can be an electric motor, such as a servo motor or a stepper motor. The drive mechanism 1 distributes power to the rollers 2 through a transmission mechanism such as a gearbox or synchronous belt. It can be understood that the same motor can have multiple outputs through a gearbox, simultaneously driving multiple rollers 2 to rotate. By configuring the transmission ratio between the gearbox and the motor, the rotational speeds of the multiple rollers 2 can differ to meet different conveying requirements. Alternatively, rollers in the same group can rotate at the same speed, and their rotational direction can be adjusted through gear meshing to meet the conveying direction requirements.

[0051] In this embodiment, a water-guiding section 6 and a guide section are selectively provided on the surface of the roller body 2. The water-guiding section 6 is processed with micro-texture to obtain hydrophilicity, and the liquid 8 in the guide section that the filament bundle 3 contacts is guided by capillary action, which breaks the water film formed at the guide section position, reduces the liquid 8 adhering to the roller body 2 during the operation of the filament bundle 3, thereby reducing the generation of fuzz and the adhesion of fuzz to the surface of the roller body 2, and reducing the problem of fuzz wrapping around the roller.

[0052] The guiding section of the roller body 2 is a smooth contact surface, avoiding the problem of scratching the fiber 3 and hooking the lint caused by opening the water guide groove on the guiding section, using the capillary action of the first micro-texture area to realize the adsorption of the water body, directional drainage of the excess liquid 8, reduce the around roller, prolong the continuous production time, improve the production efficiency.

[0053] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A hydrophilic roller for preventing sticking and winding, characterized in that, The roller body is divided into a water-guiding section, a guide section, and a water-guiding section along the axial direction. The outer circumferential surface of the guide section is a guide surface for the filament bundle to contact. The outer circumferential surface of the water-guiding section is provided with a first micro-textured area and a second micro-textured area continuously distributed along the axial direction of the roller body. The first micro-textured area is located at the end of the water-guiding section near the guide section. The first micro-textured area forms capillary action in the direction from the guide section to the water-guiding section. The second micro-textured area forms a hydrophilic surface. The first microtextured region and the second microtextured region are composed of an array of grooves processed on the outer circumferential surface of the roller. The distribution density of the grooves in the first microtextured region is greater than the distribution density of the grooves in the second microtextured region. The cross-sectional dimension of the groove corresponding to the first microtextured region is smaller than the cross-sectional dimension of the groove corresponding to the second microtextured region; Along the axial direction of the roller body, the first microtextured area is located between the second microtextured area and the guide section, and the groove corresponding to the first microtextured area is connected to the groove corresponding to the second microtextured area.

2. The anti-sticking and anti-winding hydrophilic roller as described in claim 1, characterized in that, The roller body is fitted with a rotating support, which constrains the position of the roller body to form a cantilever structure. The water guiding section and the guide section are located in the cantilever area of ​​the roller body, and a shoulder is provided between the water guiding section and the rotating support.

3. The anti-sticking and anti-winding hydrophilic roller as described in claim 2, characterized in that, Along the axial direction of the roller body, for the water guide section located on the side of the guide section away from the rotating support, one end of the second microtexture area extends to connect with the first microtexture area, and the other end extends to the end of the roller body.

4. The anti-sticking and anti-winding hydrophilic roller as described in claim 2, characterized in that, Along the axial direction of the roller, for the water guide section located between the guide section and the rotating support, one end of the second microtexture area extends to connect with the first microtexture area, and the other end extends to the shoulder of the roller.

5. The anti-sticking and anti-winding hydrophilic roller as described in claim 1, characterized in that, The axial lengths of the water-guiding sections on both sides of the guide section are equal.

6. A filament guide device, characterized in that, The anti-sticking and anti-winding hydrophilic roller as described in any one of claims 1-5 is used.

7. The filament guiding device as described in claim 6, characterized in that, It also includes a drive element and a liquid collection tank, which is located below the anti-adhesion and anti-wrinkle hydrophilic roller and receives the liquid discharged from the hydrophilic surface of the anti-adhesion and anti-wrinkle hydrophilic roller; the drive element is connected to the anti-adhesion and anti-wrinkle hydrophilic roller through a transmission element to drive the anti-adhesion and anti-wrinkle hydrophilic roller to rotate.

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