JP2011088752A - V-groove type rotary guide, carrying method and manufacturing method of yarn material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for preventing sticking of a stain to a groove part of a rotary guide used for carrying a yarn material and efficiently removing the sticking object. <P>SOLUTION: A V-groove type rotary guide is used for carrying the yarn material. The V-groove type rotary guide is provided with a continuous slit in the peripheral direction over the whole periphery of its groove bottom part. The V-groove type rotary guide is formed by communicating a cavity part with the slit by arranging the cavity part over the whole periphery in an intermediate position between the rotational axis and the slit. The V-groove type rotary guide is formed by communicating the cavity part with an external part in a place except for the slit. A method is provided for carrying the yarn material in a state of contacting the slit of the V-groove type rotary guide with a cleaning liquid. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a rotation guide used for conveying a yarn in a manufacturing process or a processing process of the yarn.

  The rotation guide is widely used for the purpose of conveying the yarn, regulating the position, changing the direction, and the like in the process of manufacturing and processing the yarn. On the other hand, impurities such as additives and treatment agents used in these processes, and by-products to be generated are transported together with the yarn, and accumulated by adhering to the groove portion of the rotating guide with which the yarn contacts. There is a case. Such a deposit is problematic in that it reattaches to the newly conveyed yarn and degrades the quality of the yarn. Further, when the groove is filled with deposits, the problem of dropping the yarn from the rotating guide is caused. In order to avoid these problems, it is necessary to stop the conveyance of the yarn and clean the groove of the rotating guide when a predetermined amount of deposit has accumulated in the groove.

  Known methods for continuously removing the deposits on the roller surface include a forced removal method by contact with a rotating brush (Patent Document 1) and a forced removal method by contact with a scraper blade (Patent Document 2). However, in the case of a rotating guide that does not have a driving force, in these methods, there is a possibility that the rotational speed of the rotating guide fluctuates due to the force for removing the deposits and slips between the rotating guide and the conveyed object.

  On the other hand, in order to avoid or reduce the adherence that has been transported with the transported object from adhering to the rotating body, it is conceivable to reduce the contact area between the transported object and the rotating body. In Patent Document 3, in order to prevent an adherent such as a mist or a chemical solution from being conveyed together with a sheet-like object to be conveyed, and to prevent the object to be conveyed from sticking to the surface of the guide roll due to the adhering matter, A technique for reducing the contact area between a sheet-like object and a guide roll by providing a groove is disclosed. However, in this technique, the object to be conveyed is a sheet and not a yarn.

JP-A-8-187469 JP-A-9-78364 JP 2004-72012 A

  As described above, when conveying the yarn using the rotating guide, the technology for avoiding dirt and the like from adhering to the groove of the rotating guide, or the adhering material such as dirt adhering to the groove of the rotating guide. There is no known technique for efficiently removing the. An object of the present invention is to provide a technique for avoiding adhesion of dirt or the like to a groove portion of a rotation guide used for conveying a yarn, or a technique for efficiently removing the attached deposit. .

  The gist of the present invention is a V-groove rotary guide used for conveying a yarn article, and a V-groove rotary guide provided with continuous slits in the circumferential direction over the entire circumference of the groove bottom. In addition, there is a method for conveying the yarn in a state where the slit of the V-groove type rotating guide is in contact with the cleaning liquid.

  According to the present invention, in the manufacturing process and processing process of the yarn, it is possible to avoid adhesion of the deposit to the groove portion of the rotation guide used for conveying the yarn, or to efficiently remove the deposit. can do. This eliminates the need for cleaning the rotating guide or reduces the frequency of cleaning, and enables long-time conveyance, thereby improving productivity.

  In the present invention, the term “yarn” refers to, for example, fibers, ropes, strings, rods, strands, and the like. The constituent of the yarn is not particularly limited, and may be a single component or a plurality of components. As for the form of the yarn, the outermost periphery of the cross section can be a solid or hollow shape with a circular shape. Moreover, what twisted and entangled the multifilament can be mentioned. Furthermore, what formed the porous film in the outer periphery of the hollow cylindrical thing knitted on the braid can be mentioned. The outer diameter of the yarn is not particularly limited, and examples thereof include a yarn having a diameter of about 0.3 mm to 5 mm.

  The V-groove type rotation guide in the present invention is a plate-like object having a structure in which a groove for running the yarn is cut on the outer peripheral side surface portion, with the rotation center axis at the center of the surface of the plate-like object as the center. The one that rotates. Further, the V-groove type of the V-groove type rotation guide means that the shape of the groove portion (that is, the width of the guide) on the cut surface including the rotation center axis (for example, the XX cross section in FIG. 1) It means that the structure becomes narrower in the direction. That is, the V-groove shape does not necessarily mean a V-shape, nor does it mean that the shape of the groove portion on the cut surface is linear. The taper angle of the groove part and the groove width of the groove bottom part are not particularly limited, and are set so as not to hinder the running of the yarn and the rotation of the rotation guide in consideration of the thickness of the yarn being conveyed. Is done.

The material of the surface of the groove part in the V-groove type rotation guide is not particularly limited, and it is coated with various materials such as stainless steel, aluminum, titanium, ceramic, polyethylene, polypropylene, polytetrafluoroethylene, polyetheretherketone and the like. Can be selected according to the required performance.

The groove bottom portion of the V-groove rotation guide refers to a portion closest to the rotation center axis among the groove portions where the yarn travels. For example, it is the portion of the symbol 14 in FIGS.

  In the present invention, the slit is a space having a predetermined width and depth, and is provided adjacent to the groove bottom in the V-groove rotation guide body. When deposits adhere to and accumulate on the bottom of the groove of the V-groove rotation guide, the deposits can move in the direction of the slit, and the slit can also serve as a deposit storage unit. Although the installation direction of a slit is not limited, As a typical example, what was provided toward the rotation center axis direction can be mentioned. In the present invention, the width of each part means the dimension in the thickness direction of the V-groove rotary guide.

  That the slit is provided over the entire circumference refers to a state in which the slit exists along the entire circumference in the rotation direction of the V-groove rotation guide. The slit can be provided continuously in the circumferential direction. For example, in FIG. 1, the slits 8 are continuously provided over the entire circumference.

  The width of the slit is appropriately determined in consideration of the size and viscosity of the deposit, the width of the groove bottom of the V-groove type rotation guide, and the like. If the width of the slit is too narrow, even if the deposit staying at the bottom of the groove moves to the slit, the slit is closed by the deposit, making it difficult to clean with a cleaning liquid. Considering these points, the width of the slit is preferably about 0.1 mm to 4 mm.

  In addition, the width | variety of a slit can be made the same as the groove width of the groove bottom part of a V-groove type rotation guide like FIG. Moreover, as shown in FIG. 7, it can also be made into the width | variety smaller than the groove width of the groove bottom part of a V-groove type | mold rotation guide.

  As shown in FIG. 3, it is preferable that the slit communicates with the outside of the V-groove rotation guide at a place other than the groove bottom. By adopting such a structure, it becomes easy to allow the deposits accumulated inside the V-groove rotary guide to flow out of the V-groove rotary guide.

  In the V-groove rotation guide of the present invention, it is preferable that a cavity is provided over the entire circumference at an intermediate position between the rotation center axis and the slit. The hollow portion is provided over the entire circumference at the intermediate position between the rotation center axis and the slit. The hollow portion corresponds to the slit over the entire circumference in the rotation direction, and the rotation center axis side with respect to the slit. Means that it is provided. Although this cavity can be provided continuously or intermittently, it is preferably provided continuously. For example, in FIG.1 and FIG.2, the cavity part 10 is provided continuously over the perimeter.

  This hollow portion has a role as a reservoir for deposits flowing from the yarn into the slit and also has a role of facilitating washing away deposits. The shape and size of the cavity are not particularly limited, and can be set as appropriate according to the nature and state of the deposit and the liquid used. Enlarging the hollow portion promotes washing away the deposits, and also reduces the weight of the V-groove rotary guide. However, since the strength of the V-groove rotary guide may be reduced by the hollow portion, it is necessary to consider the strength of the V-groove rotary guide when the hollow portion is enlarged.

  In addition, since the hollow portion is appropriately provided as necessary, it is not necessary to provide the hollow portion when a sufficient effect is exhibited with only the slit.

  The position of the bottom of the cavity, that is, the distance between the bottom of the cavity and the rotation center axis can be appropriately changed depending on the type and properties of the deposit. Further, when viewed with respect to one V-groove rotation guide, the distance between the bottom of the cavity and the rotation center axis may be constant or different at each angle of 360 degrees around the rotation center axis. Good.

  Moreover, it is preferable that this cavity part is connected with the exterior in places other than a slit. The reason why the hollow portion communicates with the outside at a portion other than the slit is to allow the deposits accumulated in the V-groove rotary guide to easily flow out of the V-groove rotary guide. It is preferable that the communication portion has a channel cross-sectional area that is equal to or larger than that of the slit. In addition, if the deposit fills up with the deposit and the deposit continues to increase, the deposit may be sent into the cavity and the internal pressure of the cavity may increase. It becomes possible to discharge the gas and liquid existing in the section to the outside more easily.

  Next, a description will be given of a method for transporting the yarn in a state where the slit of the V-groove rotating guide of the present invention is in contact with the cleaning liquid.

  To bring the slit into contact with the cleaning liquid means to bring all or a part of the slit into contact with the cleaning liquid. Examples of the contact method include a method of immersing the V-groove rotary guide in the cleaning liquid and a method of showering the cleaning liquid on the V-groove rotary guide. 9 is in a state in which a part of the slit is immersed in the cleaning liquid, and the V-groove type rotating guide 15 is in a state in which the entire slit is immersed in the cleaning liquid.

  By bringing the cleaning liquid into contact with the slit, the deposits attached to the groove bottom and the slit can be removed by peeling, dissolving, or the like. If the cavity communicates with the outside at a place other than the slit, the cleaning liquid can be flowed from the slit toward the communicating part, or conversely, the cleaning liquid can be flowed from the communicating part toward the slit. Avoidance or removal efficiency of deposits can be increased.

  The cleaning liquid may be any liquid as long as it can avoid adhesion or remove the adhered matter. However, considering the avoidance or removal efficiency of adhesion, the cleaning liquid is soluble in the adhered matter and has an adhesive force. It is preferable that it lowers. Examples of the cleaning liquid include water, an organic solvent capable of dissolving deposits, a mixture of water and an organic solvent, or a mixture thereof. Examples of the organic solvent include dimethylformamide, dimethyl sulfoxide, dimethylacetamide, thiocyanate, nitric acid, zinc chloride, acetone and the like.

  In the wet spinning method and the dry and wet spinning method, the coagulating liquid can be used as a cleaning liquid.

  As a method of supplying the yarn to the V-groove type rotation guide, there is a method in which a driving roll or the like is installed on at least one of the upstream side and the downstream side of the V-groove type rotation guide to cause the yarn item to run at a constant speed. It is done.

The present invention will be described below with reference to the drawings.
Example 1
The V-groove type rotation guide used in this example has the structure shown in FIG. 2, and a slit is provided over the entire circumference of the bottom of the groove. A hollow portion communicating with the slit is provided over the entire space, and the hollow portion communicates with the outside of the V-groove rotary guide. The V-groove rotation guide has a diameter (length D in FIG. 2) of 96 mm and a thickness (length W in FIG. 2) of 16 mm. The diameter of the groove bottom is 80 mm, the groove width of the groove bottom is 1 mm, and the taper angle (angle θ in FIG. 2) of the groove is 80 degrees. The width of the slit is 1 mm, and the depth of the slit is 3 mm. The cavity has a thickness (width) of 8 mm, an outer diameter of 74 mm, and an inner diameter of 58 mm. Further, four communicating portions are provided at 90 ° intervals in the rotation direction, and the hole diameter is 5.5 mm, which communicates with both surfaces.

  This V-groove type rotation guide includes a guide member 2 including a rotation center axis, a guide member 3 not including the rotation center axis, a fastening bolt 7 for fastening them, a bearing 6 for allowing the rotation center axis 5 and the guide member 2 to rotate freely. Have The material of the guide members 2 and 3 is polyether ether ketone, the material of the fastening bolt 7 and the rotation center shaft 5 is stainless steel, and the main material of the bearing is polyether ether ketone.

  Prepare six of these V-groove type rotation guides, and install them in the first coagulation bath and the second coagulation bath, one at each of three locations in the liquid of the coagulation bath, on the liquid surface and on the liquid as shown in FIG. did.

  The spinning process adopted a two-stage spinning method. The double tubular nozzle in the first spinning has a central tube (inner tube) diameter of 2.5 mm, and an outer tube having an inner diameter of 2.8 mm and an outer diameter of 3.3 mm is formed on the outer side thereof. The tips of the inner tube and the outer tube in the discharge direction are substantially in the same plane. The double tubular nozzle in the second spinning has an inner tube diameter of 2.7 mm, an outer tube inner diameter of 3.0 mm, and an outer diameter of 3.7 mm. It protrudes 1.5mm from the tip. A coagulation liquid having the same concentration and temperature was used for both the first spinning and the second spinning. The coagulation bath was an 80 ° C. solution of 5% by mass of N, N-dimethylacetamide and 95% by mass of water. In this embodiment, each coagulation liquid serves as a cleaning liquid for the slit portion.

  First, polyvinylidene fluoride A (manufactured by Atofina Japan, trade name Kyner 301F), polyvinylidene fluoride B (manufactured by Atofina Japan, trade name Kyner 9000HD), polyvinylpyrrolidone (manufactured by ISP, trade name K-90), N, Using N-dimethylacetamide, the compositions of the first film-forming stock solution and the second film-forming stock solution shown in Table 1 were prepared.

  As the first spinning, a polyester multifilament single woven hollow braid (multifilament; total decitex 830/96 filament, 16 beats, hereinafter referred to as braid) is run on the inner tube of the double tubular nozzle, The first film-forming stock solution was supplied to the outer tube. After spinning, the yarn is guided into the first coagulation bath, pulled up from the coagulation bath at a constant speed of 6 m / min through three V-groove rotating guides, and the first porous layer on the outer surface of the braid As a result, a yarn F1 was formed. The outer diameter of the yarn material F1 was approximately 2.4 mm.

  Subsequently, a second spinning was performed. That is, the yarn F1 was run through the inner tube of the double tubular nozzle, and the second film-forming stock solution was supplied to the outer tube of the double tubular nozzle. Thus, the yarn F2 in which the second porous layer was formed on the outer surface of the obtained yarn F1 was obtained. The outer diameter of the yarn F2 was approximately 2.8 mm.

  In this state, continuous spinning for 3 days was carried out. As a result, in both the first spinning and the second spinning, no adhesion or deposition was observed on the V-groove rotating guide installed in the liquid surface. The amount of deposit on the upper V-groove rotary guide is extremely small, and cleaning of the V-groove rotary guide is unnecessary.

(Comparative Example 1)
Spinning was carried out in the same manner as in Example 1 except that the six V-groove rotation guides were changed to the V-groove rotation guides of FIG. 9 having no slits. One hour after the start of spinning, deposits accumulated in the liquid in the first coagulation bath, the liquid level, and the V-groove rotary guide on the bath. Further, after 3 days, the adhering material occupied about 80% of the groove cross section in the V-groove rotary guide in the liquid of the first coagulation bath, so spinning was stopped and each V-groove rotary guide was cleaned.

It is explanatory drawing which looked at the V-groove type rotation guide of this invention from the front. The yarn 4 is traveling in the groove portion of the V-groove rotation guide, and the slit 8, the cavity portion 10, and the communication portion 11 are in contact with the cleaning liquid 9. It is sectional drawing in the XX cross section which passes along the rotation center axis | shaft of the V-groove type | mold rotation guide of FIG. It is a partial expanded sectional view of a groove part periphery which passes along the rotation center axis | shaft of the V groove type rotation guide of this invention. It is a partial expanded sectional view of a groove part periphery which passes along the rotation center axis | shaft of the V groove type rotation guide of this invention. In order to make it easier to see the deposits on the surface, the yarn is displayed somewhat isolated from the V-groove rotation guide. It is a partial expanded sectional view of a groove part periphery which passes along the rotation center axis | shaft of the V groove type rotation guide of this invention. It is a partial expanded sectional view of a groove bottom periphery passing through the rotation center axis of the V groove type rotation guide of the present invention. A slit having the same width as the groove bottom width exists at the groove bottom portion. It is a partial expanded sectional view of a groove bottom periphery passing through the rotation center axis of the V groove type rotation guide of the present invention. A slit having a width smaller than the groove bottom width exists at the groove bottom portion. It is a partial expanded sectional view of the groove part periphery of the V-groove type rotation guide of the prior art example which does not have a slit. FIG. 3 is a schematic diagram illustrating a positional relationship between a V-groove rotary guide and a cleaning liquid in Example 1. The V-groove rotation guide 15 is completely immersed in the cleaning liquid, and the slit of the V-groove rotation guide 16 is partially immersed in the cleaning liquid.

1 V-groove rotation guide 2 Guide member M
3 Guide member S
DESCRIPTION OF SYMBOLS 4 Thread thing 5 Rotation center axis 6 Bearing 7 Fastening bolt 8 Slit 9 Cleaning liquid 10 Cavity part 11 Communication part 12 Cavity part bottom 13 Deposits 14 Groove bottom part 15, 16, 17 V-groove rotation guide 18 Coagulation bath

Claims (5)

  A V-groove rotary guide used for conveying a yarn, wherein a continuous slit in the circumferential direction is provided over the entire circumference of the bottom of the groove.   The V-groove rotation guide according to claim 1, wherein a hollow portion is provided over the entire circumference at an intermediate position between the rotation center axis and the slit, and the hollow portion communicates with the slit.   The V-groove rotation guide according to claim 2, wherein the hollow portion is communicated with the outside at a place other than the slit. The method to convey a thread | yarn thing in the state which made the slit of the V-groove type | mold rotation guide in any one of Claims 1-3 contact the washing | cleaning liquid.   The manufacturing method of the yarn thing which conveys the yarn thing which the coagulating liquid spun using the wet spinning method or the semi-wet spinning method adhered using the V groove type rotation guide in any one of 1-3.

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