JP2022108325A - Polygonal bobbin body, manufacturing method of fiber bundle, and blood purifier - Google Patents

Abstract

To provide a polygonal bobbin body, regardless of a simple structure, highly precisely and highly densely reeling fibers therein and easily keeping the form of an acquired fiber bundle.SOLUTION: A polygonal bobbin body comprises a central part 110, a plurality of extension parts 120, a plurality of connection parts 130, a plurality of take-up parts 140, support parts 150 and fixing parts 151. The plurality of extension parts extend from the central part so as to respectively locate on the same plane, the plurality of connection parts respectively connect the adjacent extension parts to each other, the plurality of take-up parts are respectively disposed at tip portions of the extension parts, the support parts are disposed on surfaces of the connection parts such that longitudinal directions thereof become approximately parallel to the longitudinal directions of the connection parts, where a cross section of each support part on a surface orthogonally crossing the longitudinal direction of the support part has a U-shaped portion, and the fixing parts are disposed on the surfaces of the support parts.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a polygonal winding frame, a yarn bundle manufacturing method, and a blood purifier.

BACKGROUND ART Conventionally, a therapy in which a patient's blood is extracorporeally circulated through a blood purifier to purify the blood is widely known. Blood purifiers include, for example, a hollow fiber type in which a hollow fiber bundle of multiple hollow fibers is built in a case, and a solid fiber type in which a solid fiber bundle of multiple solid fibers is built in, and the like. .

Regarding a blood purifier with a built-in thread bundle that performs the function of adsorbing and separating substances to be removed from the blood, in order to improve the blood purification performance, for example, the number of threads of the thread bundle built into the case is increased. can be considered. However, if the number of threads is simply increased, the diameter of the case of the blood purifier will increase, and there are concerns that the handling in hospital facilities will deteriorate and the physical burden on patients will increase.

In order to suppress the expansion of the case diameter, for example, it is necessary to increase the density of the bundle of yarns contained (the number of yarns per unit area when observing the cross section of the bundle of yarns in the plane perpendicular to the longitudinal direction of the bundle of yarns increase) becomes effective. As a method for obtaining such a high-density yarn bundle, for example, bundling using a bobbin that can wind the yarn under tension is known (Patent Documents 1 to 4). In addition, after the bundled yarn bundle is cut out from the winding frame, it is wrapped with a film and covered with a film for the purpose of maintaining its shape (rolling shape) and protecting the surface such as avoiding foreign matter adhesion and drying. is common.

JP-A-1-189305 JP-A-63-84563 JP 2006-175394 A Japanese Patent Application Laid-Open No. 2009-234680

However, in any of the conventionally known methods of bundling yarns using winding frames of various shapes and structures, it is difficult to maintain the desired shape and density due to slackness and deformation of the obtained yarn bundles. (Patent Documents 1, 2 and 4), or the task of collecting the yarn bundle after winding becomes extremely complicated (Patent Document 3).

In addition, in any of the bundling methods, when trying to avoid the yarn bundle from collapsing during the work of cutting out the obtained yarn bundle, it is required to cover the surface with a film before that. , it was the current situation that the complication of the process was inevitable.

Therefore, the present invention provides a polygonal winding frame that has a simple structure, yet can wind yarn with high accuracy and high density, and easily maintain the shape of the resulting linear yarn bundle. intended to provide

In order to solve the above problems, the present invention includes a central portion, a plurality of extending portions, a plurality of connecting portions, a plurality of winding portions, a support portion, and a fixing portion, and the plurality of extending portions. The portions extend from the central portion so that they are positioned on the same plane, the plurality of connecting portions connect the adjacent extending portions, respectively, and the plurality of winding portions are , and the support portion is arranged on the surface of the connection portion so that its longitudinal direction is substantially parallel to the longitudinal direction of the connection portion, and the support portion a polygonal winding frame, wherein the cross-section of the support in a plane perpendicular to the longitudinal direction of .

ADVANTAGE OF THE INVENTION According to this invention, by using the winding frame body of the simple structure which can be manufactured at low cost, it becomes possible to wind highly linear high-density yarn bundle with high precision. Furthermore, it becomes possible to wind the film around the obtained yarn bundle very simply, and the maintenance of the quality including the form of the obtained yarn bundle can be achieved very easily.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which illustrates one Embodiment of the polygonal winding frame body of this invention, (a) is a front view, (b) is a perspective view. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which illustrates one Embodiment of the winding part with which the polygonal winding frame body of this invention is provided, (a) is a front view, (b) is sectional drawing. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which illustrates one Embodiment of the support part with which the polygonal winding frame body of this invention is provided, (a) is a front view, (b) is an arrow view, (c) is a perspective view. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram illustrating an embodiment of a polygonal winding frame of the present invention, where (a) is a perspective view showing the state before winding the yarn, and (b) is the state after winding the yarn. (c) is a perspective view showing a state in which a film is wound around a wound yarn bundle, and (d) is a perspective view showing a state in which the yarn bundle is cut out from a polygonal winding frame. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration front view illustrating a yarn winding device using a polygonal winding frame of the present invention; FIG. 4 is a schematic configuration diagram illustrating another embodiment of the polygonal winding frame of the present invention, where (a) is a front view and (b) is a perspective view. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of an example of the conventional polygonal winding frame, (a) is a front view, (b) is a perspective view.

FIG. 7 shows a schematic configuration diagram of an example of a conventional polygonal winding frame. The polygonal winding frame 100 has a plurality of extending portions 120 extending from the central portion 110 so as to be positioned on the same plane, and winding portions 140 are arranged at the ends of the extending portions 120, respectively. , and adjacent extension portions are connected to each other by connecting portions 130 .

The polygonal winding frame body of the present invention includes a central portion, a plurality of extending portions, a plurality of connecting portions, and a plurality of winding portions, and the plurality of extending portions are positioned on the same plane. , the plurality of connecting portions connect the adjacent extending portions to each other, and the plurality of winding portions are arranged at the distal end portions of the extending portions, respectively. and a support portion and a fixing portion, wherein the support portion is arranged on the surface of the connection portion such that its longitudinal direction is substantially parallel to the longitudinal direction of the connection portion. and the fixing portion is arranged on the surface of the support portion.

FIG. 1 shows a schematic configuration diagram of a polygonal winding frame according to a first embodiment of the present invention. In this embodiment, the polygonal winding frame has a hexagonal shape with six extending portions 120, six connecting portions 130 and six winding portions 140, respectively. The number of corners of the polygonal winding frame of the present invention is not particularly limited. If so, the overall size of the polygonal bobbin will be large. On the other hand, the smaller the number of corners, the smaller the number of linear yarn bundles that can be obtained, but the smaller the overall size of the polygonal winding frame. The number of corners of the polygonal winding frame may be appropriately selected depending on the production takt time, the size of the equipment, and the like.

Further, in this embodiment, two supporting portions 150 are arranged on each of the connecting portions 130 , and two fixing portions 151 are arranged on each of the supporting portions 150 .

In FIG. 1, a polygonal winding frame 100 has a plurality of extending portions 120 extending from a central portion 110 so as to be positioned on the same plane, and winding portions 140 are provided at the ends of the extending portions 120, respectively. Adjacent extending portions are connected by connecting portions 130, respectively. Furthermore, support portions 150 are arranged on the surfaces of the connecting portions 130 so that their longitudinal directions are substantially parallel to the longitudinal direction of the connecting portions 130 .

It is preferable that the winding section and the support section are configured independently, like the winding section 140 and the support section 150 shown in FIG. Here, "independently configured" means that the winding portion 140 and the support portion 150 are not continuously arranged in contact with each other as shown in FIG. It means that there is a gap 101 for cutting out a yarn bundle from the polygonal winding frame 100 between the supporting portion 150 and the supporting portion 150 .

The central portion 110 is a member for fixing the plurality of extending portions 120, and the extending portions 120 and the connecting portion 130 are members for fixing the winding portion 140 and the support portion 150, respectively. As materials for these members, from the viewpoint of rust prevention, resin, stainless steel, or aluminum is preferable. As the resin, polyacetal resin or polyamide resin is preferable from the viewpoint of machinability and strength.

The plurality of winding parts are members for directly holding the yarn to be wound. As shown in FIG. 1, it is preferable that the plurality of winding parts be arranged at regular intervals around the central part 110 of the polygonal winding frame 100 . By arranging a plurality of winding parts at equal intervals, not only the length of the yarn bundle obtained after cutting is uniform, but also the balance of the force acting on the polygonal winding frame during winding is balanced. The polygonal winding frame is less likely to be damaged. In the case of the polygonal winding frame body 100 shown in FIG. 1, adjacent winding portions 140 are arranged at regular intervals around the central portion 110 . As a result, the angles formed between the adjacent winding portions 140 with the central portion 110 as the apex (that is, the angles formed by the adjacent extending portions) are all 60 degrees.

FIG. 2(a) shows an embodiment of the winding part provided in the polygonal winding frame of the present invention. The winding unit 140 illustrated in FIG. 2A has a winding frame 141 . Since the members represented by the winding frame 141 are provided at the positions forming the corners of the polygonal shape, the yarn can be stably wound into the polygonal shape, and finally the polygonal yarn can be wound. Bundles can be formed.

The shape of the winding frame can be changed as appropriate according to the desired cross section and shape of the yarn bundle. Since the shape of the cross section is generally circular, the shape of the winding frame 141 is U-shaped as shown in FIG. 2(b).

The supporting portion provided in the polygonal winding frame of the present invention suppresses the loosening of the wound yarn in the direction perpendicular to the longitudinal direction of the yarn bundle or in the center direction of the polygonal winding frame. It is a member whose main purpose is to

In order to prevent damage to the wound yarn, it is preferable that the surfaces of the portions of the winding portion and the support portion that come into contact with the wound yarn (through the film described later) be mirror-finished. Appropriate surface treatment may be performed. As materials for these members, resin, stainless steel or aluminum is preferable from the viewpoint of rust prevention, and stainless steel is more preferable from the viewpoint of strength.

The support part provided in the polygonal winding frame of the present invention requires that the cross section of the support part in the plane perpendicular to the longitudinal direction of the support part has a U-shaped portion. By having a U-shaped section as shown in FIG. 3(b), the cross section of the yarn bundle in a plane perpendicular to the longitudinal direction of the yarn bundle can be circular.

It is necessary that the supporting portion is arranged on the surface of the connecting portion so that its longitudinal direction is substantially parallel to the longitudinal direction of the connecting portion. It is preferable that they are arranged so as to be substantially parallel. By arranging them in such a manner, it is possible to reduce the variation in diameter of the wound yarn bundle. Furthermore, after the winding of the yarn is started, the yarn linearly existing between the adjacent winding parts is arranged so as to be in contact with the support part (or the surface of the film described later) over the entire length. is more preferred. By being arranged in such a manner, the supporting portion can support the wound yarn without slackening it. From the same point of view, it is preferable that the length of the supporting portion arranged between the adjacent winding portions is longer.

On the other hand, as shown in FIG. 1 and the like, when a plurality of supporting portions are arranged between adjacent winding portions and there are gaps between the supporting portions, the yarn bundle after winding is cut out. It is possible to measure the outer diameter of the yarn bundle without

A fixing portion is arranged on the surface of the support portion. Adhering portions 151 are arranged on the surfaces of both ends of the supporting portion 150 illustrated in FIG. 3(c). Due to the presence of the fixing portion having the function of fixing the film, it is possible to fix the film securely at a desired position on the supporting portion in advance before winding the thread.

Examples of the fixing portion include an adhesive tape, a porous body, and a self-adsorbing sheet-like body. Here, the "porous body" has a structure that can make the surface negative pressure from the inside (connectable to an external vacuum pump, internal communication path, etc.), and uses the negative pressure state of the surface It is a fixing part that can fix the film by pressing. When the fixing part is a porous body, the degree of fixing can be easily adjusted by adjusting the surface area and the degree of negative pressure. can be easily peeled off, and the porous body itself does not deteriorate even after repeated use. In addition, the "self-adsorbing sheet-like body" is provided with a suction cup layer that can expand the surface after a large number of micropores contract once when the film is pressed, and can create a negative pressure on the surface from the inside. It means a fixing part that can fix the film by using the negative pressure state of. When the fixing portion is a self-adsorbing sheet-like body, not only can the degree of fixing be easily adjusted by adjusting the surface area and degree of fine pore distribution, but also the film adhered to the surface can be easily peeled off. is preferable because the self-adsorptive sheet-like body itself does not deteriorate even after repeated use.

Before starting the winding of the yarn, the film is fixed to the desired position of the supporting part, that is, to the fixing part, and is securely fixed in advance, and after the yarn bundle is bundled, the film is peeled off from the fixing part. Thus, it becomes extremely easy to wrap the film around the surface of the yarn bundle before cutting out the obtained yarn bundle. The length of the film is preferably long enough to cover the entire surface of the yarn bundle after cutting. The strength of the fixing of the film to the fixed part is determined by taking into account the balance between the fact that the film is securely fixed while the yarn is being wound and the fact that the film can be easily peeled off after the yarn bundle is bundled. , may be determined as appropriate.

FIG. 4 is a schematic view of each process from winding yarn using the polygonal winding frame 100 illustrated in FIG. 1 to cutting out the wound yarn bundle. FIG. 4( a ) shows the state before the yarn is wound, in which the film 160 is fixed to each fixing portion 151 of the polygonal bobbin 100 . FIG. 4(b) shows the state after the thread is wound using the polygonal winding frame 100. FIG. FIG. 4(c) shows a state in which the film 160 is wound around the wound yarn bundle 230. FIG. In this state, the surface of the thread bundle 230 can be covered with the film 160 by attaching and fixing one end of the film 160 to the film surface with, for example, an adhesive tape (not shown).

FIG. 4(d) shows a state in which the yarn bundle 230 covered with the film 160 is cut out from the polygonal winding frame 100 to obtain a straight cut yarn bundle 231. FIG. Methods of cutting out the bundle of yarn 230 include, for example, the use of trimming shears or a rotary cutter fitted with a circular blade. When the yarn bundle 230 is cut out to obtain the cut yarn bundle 231, the film 160 wound around the yarn bundle 230 may be cut.

FIG. 5 is a schematic diagram illustrating a winding device that winds yarn using the polygonal winding frame 100 illustrated in FIG. A polygonal winding frame 100 is attached to a winding device 250, and the polygonal winding frame 100 rotates in the direction of an arrow 220 (clockwise direction) shown in FIG. 5 around its central portion. A yarn 200 supplied to the polygonal winding frame 100 is spun from a spinning device (not shown), guided through a traverse device 240 to a winding frame 141, and wound onto the rotating polygonal winding frame 100.

Next, the polygonal winding frame 100 is rotated until a desired number of yarns is obtained to obtain a yarn bundle. The yarn 200 wound here may be a yarn wound on a bobbin in advance. The number of threads 200 supplied at one time may be one or more. The "traverse" performed by the traverse device refers to the function of continuously reciprocating the yarn being wound for a certain length in the Y direction shown in FIG.

In the polygonal winding frame 100 illustrated in FIG. Grooves 102 are provided between the portions 140 respectively. Here, "integrally formed" means that the winding portion 140 and the support portion 150 are formed continuously as shown in FIG. As a method for integrally forming the winding portion and the support portion, for example, a mechanical method such as screwing, welding a metal support portion and a metal winding portion, or welding a resin support portion and a resin bonding, welding, or injection molding with the winding portion 140. Further, the groove portion means a concave shape into which a knife can be inserted in order to cut out the yarn bundle from the polygonal winding frame. In addition, in the polygonal winding frame body of such an embodiment, the fixed portion may be arranged on the surface of the winding portion in addition to the surface of the support portion which is integrally formed.

EXAMPLES The present invention will be specifically described below with reference to examples, etc., but the present invention is not limited to these.

[Example 1]
A yarn winding device having a configuration similar to that of FIG. 5 and a polygonal winding body similar to that of FIG. 1 were used. The length in the longitudinal direction of the support portions provided in the polygonal wound body was 255 mm. A self-adsorption sheet (manufactured by Tokyo Tac Co., Ltd., model: KS non-double-sided) was arranged as a fixing part in the same manner as shown in FIG. 4(a) on each support part. Each self-adhesive sheet had a width of 20 mm and a length of 160 mm, and was adhered to both ends of the supporting part so that the suction cup layer, that is, the self-adsorption surface was exposed.

A polyethylene terephthalate film having a thickness of 50 μm, a length of 255 mm, and a width of 240 mm was fixed to the fixing portions at both ends of the support so that its length direction coincided with the longitudinal direction of the support.

A plurality of solid yarns with a yarn diameter of 100 μm spun from a spinning device are supplied to the winding unit at the same time, and the polygonal winding frame is rotated while traversing to form 211,200 solid yarns. A yarn bundle in the same state as in FIG. 4(b) was obtained. The approximate total length of the yarn bundle between adjacent windings was 320 mm each.

After the yarn bundle was obtained, the film was peeled off from the fixed portion and wound around the yarn bundle to create a state similar to that shown in FIG. 4(c). When the outer diameter of the yarn bundle around which the film was wound was measured at the center between the adjacent wound parts, it was 73.6 mm.

The outer diameter of the yarn bundle was measured using a pyometer (manufactured by Nippon Doki Co., Ltd., model: πM-100). More specifically, after the pyometer is rotated along the outer circumference of the yarn bundle, a pull gauge is attached to one end of the pymeter, and while holding the other end by hand, the pull gauge is pulled by hand until the value reaches 3N and read. The outer diameter of the yarn bundle was obtained by dividing the outer circumference of the yarn bundle by the circumference ratio π.

After that, as shown in FIG. 4(d), cutting scissors (manufactured by Shozaburo Co., Ltd., model: A-280) are inserted into the gap for cutting out the yarn bundle, and the yarn bundle is manually cut out. , to obtain a linear yarn bundle having an approximate total length of 290 mm. When the cross section of the yarn bundle was observed at this time, it was found to be a high-quality cross section without any cracks.

[Comparative Example 1]
A yarn bundle was obtained by winding the yarn under the same conditions as in Example 1, except that the polygonal winding frame was changed to a polygonal winding frame similar to that shown in FIG. The obtained yarn bundle had an outer diameter of 77.0 mm. After that, the yarn bundle was cut out to have the same length as in Example 1, and when its cross section was observed, it was partially torn.

These results are summarized in Table 1. As is clear from Table 1, although the yarn bundle was wound under the same conditions, the yarn bundle wound by the polygonal winding frame of the present invention has a smaller outer diameter and a higher density than the conventional method. I was able to get a nice bundle of yarn. In addition, a film can be very easily wound around the obtained yarn bundle, and the shape of the yarn bundle can be maintained, so that a high-quality yarn bundle with no cracks in the cross section can be obtained. rice field.

100 polygonal winding frame body 101 void 102 groove 110 central portion 120 extending portion 130 connecting portion 140 winding portion 141 winding frame 150 support portion 151 fixing portion 160 film 200 yarn 210 spun from a spinning device direction 220 in which the yarn is pulled out Winding frame rotation direction 230 Yarn bundle 230a Yarn bundle diameter 231 Cut yarn bundle 240 Traverse device 250 Winding device

Claims (5)

comprising a central portion, a plurality of extending portions, a plurality of connecting portions, a plurality of winding portions, a support portion, and a fixing portion;
The plurality of extending portions extend from the central portion so as to be positioned on the same plane,
The plurality of connecting portions connect the adjacent extending portions respectively,
The plurality of winding parts are arranged at the distal ends of the extending parts,
The support portion is arranged on the surface of the connecting portion such that its longitudinal direction is substantially parallel to the longitudinal direction of the connecting portion,
A cross section of the support portion in a plane perpendicular to the longitudinal direction of the support portion has a U-shaped portion,
A polygonal winding frame, wherein the fixed portion is arranged on the surface of the support portion. 2. The polygonal winding frame according to claim 1, wherein said fixing portion is a porous body. 2. The polygonal winding frame according to claim 1, wherein said fixing portion is a self-sucking sheet-like body. A method for producing a yarn bundle, comprising a winding step of winding yarn using the polygonal winding frame according to any one of claims 1 to 3 to obtain a yarn bundle. A blood purifier containing the thread bundle according to claim 4.

Images