JP2964848B2 - Yarn bundle loading method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an artificial kidney for removing waste products in blood by dialysis or filtration, and a hollow fiber filtration membrane separator for use in a purifying apparatus for drinking water, etc. And a method of loading a hollow fiber filtration membrane assembly (hereinafter, referred to as a “fiber bundle”) into a separator case.

[0002]

2. Description of the Related Art Conventionally, in a process of manufacturing a hollow fiber filtration membrane separator, a process of loading a yarn bundle into a separator case is disclosed in Japanese Patent Application Laid-Open No. 60-54711. A method is employed in which a sheet is wound around the bundle to converge the thread bundle, then inserted into the case together with the wound sheet, and then only the sheet is removed from the case while holding one end of the thread bundle.

[0003] However, since all of these methods are performed manually, extra hygiene considerations such as sterilization of exposed parts of the body in order to maintain a sterile condition are required, and the production efficiency is poor due to poor work efficiency. There is a problem that the cost is high due to the low performance.

As a method for inserting a yarn bundle into a case to solve such problems as hygiene and high cost, Japanese Patent Application Laid-Open No.
As disclosed in Japanese Patent No. 80463, there has been proposed a method of automatically inserting a workpiece by a mechanical device while avoiding a manual operation as much as possible. That is, a thread bundle guide tube is provided at the upper end of the case in the vertical state, the thread bundle is put into the guide tube, and the inside of the case is suctioned and decompressed while the lower end of the case is sealed, so that the yarn bundle is reduced. This is a method in which suction is performed into the case while descending along the guide tube, and then lowered and inserted.

In this method, since the insertion of the yarn bundle into the case is a suction operation by decompression, the hand is hardly touched directly with the yarn bundle, so that the problem of hygiene is improved.

As another yarn bundle insertion method improved in terms of hygiene problems and production efficiency as described above, Japanese Patent Laid-Open Publication No.
As disclosed in JP-A-1-86906 and JP-A-63-242307, a method of interposing a bag or a tubular member has been proposed. In the former method, a yarn bundle having a binding portion at one end is introduced into a hollow cylindrical bag provided with a lead-out means at a lower end,
After inserting them into the case, it is a method of extracting only the bag from the case using the lead-out means provided at the lower end of the bag.

In the latter method, a tubular member is inserted into a case in advance, a thread bundle is inserted into the case by the guide, and the tubular member is removed from the case.

In these methods, since the yarn bundle is inserted into the case using a bag or a tubular member, the method is sanitary, has relatively high work efficiency, and has high productivity.

[0009]

However, the prior art having such a structure has the following problems. That is, in the method of providing the guide cylinder, the yarn bundle sealing the upper end of the case is a hollow fiber,
Complete sealing was not possible, so it took a long time to depressurize the inside of the case, productivity was very poor, and the hollow fiber bundles fed into the guide cylinder were not converged in a large diameter state. As it is, it is squeezed while being suctioned down to the inner diameter of the case at the outlet end of the guide tube, and the hollow fiber bundle has a single yarn that is damaged and damaged at the outlet end of the guide tube. There is a problem.

Further, in the method using a bag, when the bag is removed from the case, a binding portion provided at one end of the yarn bundle is stopped at a throat portion of the case so that the yarn bundle is not discharged at the same time. It is stopped. Therefore, it is not applicable to the insertion of a yarn bundle having no tying portion, and if the insertion of such a yarn bundle is intentionally performed by this method, an extra tying portion, which is essential, must be provided. Therefore, there is a problem that the cost is increased. In addition, when a high-density yarn bundle is inserted into the case by way of a cylindrical member, the yarn bundle becomes bulky and the yarn bundle is squeezed at the throat portion of the case or at the entrance of the cylindrical member. There is also a problem that the single yarn of the yarn bundle is damaged at the corner of the section. Furthermore, since a large amount of bags are consumed, industrial waste is a problem as well as cost increases.

The present invention has been made in view of such circumstances, and is sanitary and does not damage single yarns of a yarn bundle.
It is another object of the present invention to provide a yarn bundle loading method for smoothly inserting a yarn bundle into a case without generating industrial waste and automatically inserting a yarn bundle with high productivity.

[0012]

The present invention has the following configuration in order to achieve the above object. That is, the invention according to claim 1 is a method of loading a yarn bundle into a cylindrical case, wherein the yarn bundle is inserted from a front part to a deep part in a sheet-like material formed in a cylindrical shape in advance, The sheet-like material containing the yarn bundle is squeezed radially from the periphery to the inner diameter of the case or less, and a front portion of the sheet-like material is inserted into the case with the squeezed state, The thread bundle is pushed toward the front of the sheet-like material to a position where the leading end of the thread bundle protrudes from the end of the case. Only the object is extracted from the case.

According to a second aspect of the present invention, in the method for loading a yarn bundle into a cylindrical case, the yarn bundle is inserted into a sheet-like material formed in a cylindrical shape in advance, and the yarn bundle is inserted into the cylindrical case. The sheet-like object having the built-in is narrowed down to the inner diameter of the case in the radial direction from the periphery, and the case, in which the sheet-like cylindrical object having a smaller friction coefficient than the inner peripheral surface of the case is previously embedded, is closed at the end of the yarn bundle. In a state where the thread bundle is squeezed, the thread bundle is pushed out in the opening direction of the case containing the tubular object to a position where the tip of the thread bundle projects from the end of the case, and the tip of the thread bundle is And extracting only the cylindrical object from inside the case while holding the case.

According to a third aspect of the present invention, in the method according to the first or second aspect, a plurality of cord-like bands are wound around the outer periphery of the sheet-like material, and the yarn bundle is inserted. By pulling in the string-like band in the state, the sheet-like material is rolled up and the yarn bundle is narrowed.

The invention described in claim 4 is the same as the claim 2.
In the method described in (1), after the yarn bundle is loaded into the case, the extracted tubular article is inserted into the next case and reused.

[0016]

The operation of the present invention is as follows. That is,
According to the first aspect of the present invention, the yarn bundle is inserted and loaded into the case in a state where the yarn bundle is squeezed radially from the periphery to below the inner diameter of the case via a sheet-like material formed in advance in a tubular shape. Therefore, when inserting a yarn bundle larger than the inner diameter of the case into the case, the yarn bundle can be smoothly inserted into the case, and by inserting a part of the sheet-like material deep inside the case. Since the sheet serves as a guide for the yarn bundle, it is possible to prevent the single yarn on the outer periphery of the yarn bundle from being damaged by forcibly pushing the yarn bundle into the case.

According to the second aspect of the present invention, the yarn bundle is narrowed down to the inner diameter of the case in a radial direction from the periphery through the sheet-like material formed in a cylindrical shape in advance, and the cylindrical material is previously drawn. Push it into the built-in case. Then, after the yarn bundle is loaded into the cylindrical object in the case, only the cylindrical object is extracted, so that the yarn bundle can be smoothly inserted into the case,
In addition, since the yarn bundle is inserted into a cylindrical object having a smaller coefficient of friction than the inner peripheral surface of the case, damage to the single yarn of the yarn bundle due to friction with the inner surface of the case can be prevented.

According to the third aspect of the present invention, a plurality of cord-like bands are wound around the outer periphery of the sheet-like material, and the cord-like band is pulled in with the thread bundle inserted, whereby the wound sheet-like material is wound. The object can be rolled deeper, i.e., into a smaller diameter. Accordingly, the yarn bundle inserted into the sheet-like material is narrowed down to a high density by the sheet-like material being wound into a small diameter. Conversely, when the string-like band is loosened, the outer shape of the rolled-up sheet greatly expands due to the elastic force of the sheet-like material, and the thread bundle is restored to a state where it can be easily inserted therein.

According to the fourth aspect of the present invention, the cylindrical member previously inserted into the case is pulled out of the case after the thread bundle is pushed into the case, inserted into the next case, and reused repeatedly. Therefore, no industrial waste such as the bag described above is generated, and the cost can be suppressed.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to the drawings. First Embodiment A first embodiment of the yarn bundle loading method according to the present invention will be described with reference to FIG. FIG. 1 shows a yarn bundle W of the first embodiment.
It is a figure showing the loading procedure. In the drawing, reference numeral 1 denotes a yarn bundle W
Is a thread bundle narrowing-down unit for narrowing the thread to a small diameter, a cylindrical sheet-like material 2a, a plurality of string-like materials 3a wound at least once around the outer circumference at equal intervals, and both ends of the string-like material 3a And a pair of fixed bars 4 for supporting the same. Note that the sheet-like material 2a is opened with its inner diameter larger than the maximum outer diameter of the yarn bundle W in a state where the string-like material 3a is loosened, and its length is approximately twice as long as the yarn bundle W. The string 3a is wound around the insertion portion of the thread bundle W.

Next, a procedure for loading the yarn bundle W into the case 8 will be described. (1) First, as shown in FIG.
"a" is in a standby state in which the cord 3a on the outer periphery is loosened and opened. In this state, the yarn bundle supply means 5 conveys the yarn bundle W near the opening of the sheet-like material 2a.

(2) Next, as shown in FIG.
The thread bundle W is converted into the string-like material 3 of the sheet-like material 2a by the insertion member 6.
a is inserted all the way to the back where it is wound. Then, the insertion member 6 is retracted and returned, and the case 8 is conveyed to the vicinity of the opening of the sheet-like material 2a by a conveying means (not shown), and waits.

(3) Next, while pulling the cord-like band 3a wound around the outer periphery of the sheet-like material 2a via the fixing bar 4, the sheet-like material 2a is wound up to narrow the yarn bundle W. Then, in a state where the sheet-like material 2a is narrowed down to the inner diameter of the case 8 or less, the case 8 is advanced to the sheet-like material 2a side, and the sheet-like material 2a is taken in as shown in FIG. . The case 8 is a sheet-like material 2a.
Should be taken in at least 80%.

(4) In this state, the pushing-out member 7 provided on the side (left side in the figure) of the yarn bundle narrowing-down section 1 is advanced toward the case 8 so that the yarn bundle W in the narrowed state can be moved. The thread bundle W is moved into the case 8 and pushed out to a position where the leading end of the thread bundle W projects from the end of the case 8 as shown in FIG.

(5) After the case 8 is gripped by the gripping means 9 and the leading end of the yarn bundle W is gripped by the gripping means 10, both of them are moved toward the gripping means 10 at the same speed. The case 8 in which the yarn bundle W is loaded is obtained by pulling out from the sheet-like material 2a fixed to the yarn bundle narrowing-down section 1. In this way, the yarn bundle W can be smoothly loaded into the case 8 without being damaged.

Thereafter, the extruding member 7 is retracted, the string-like band 3a is loosened, the narrowing of the sheet-like material 2a is released, and the next yarn bundle W is conveyed near the opening of the sheet-like material 2a. 1A, and the above operation is repeated thereafter.

Second Embodiment A second embodiment of the yarn bundle loading method according to the present invention will be described with reference to FIG. FIG. 2 is a diagram showing a procedure for loading the yarn bundle W of the second embodiment. In the figure, portions denoted by the same reference numerals as those in the first embodiment described above have the same configuration, and thus detailed description is omitted here. Hereinafter, a procedure for loading the yarn bundle W into the case 8 will be described.

(1) As shown in FIG. 2 (A), the yarn bundle narrowing section 20 removes the sheet-like material 2b previously wound into a cylindrical shape and loosens the string-like band 3a as in the first embodiment. It is in a standby state released by. In this state,
The thread bundle W is inserted into the sheet material 2b by the insertion member 6. The sheet-like material 2b is close to the length of the yarn bundle W.

(2) Next, while pulling the cord-like band 3a wound around the outer periphery of the sheet-like material 2b via the fixing bar 4, the sheet-like material 2b is wound into the case 8
Narrow down to below the inner diameter of. On the other hand, after the insertion member 6 is retracted, the case 8 containing the tubular object 30 is conveyed to the vicinity of the opening of the sheet-like object 2b in advance and made to stand by.

The cylindrical object 30 is, as shown in FIG.
For example, a film-like sheet 32 wrapped so that both end portions are overlapped with each other is formed into a tip portion 31a of a resin-made guide member 31.
4, or a cylindrical film member 34 which is mostly divided around a cylindrical net portion 35 made of synthetic fiber, is attached to the distal end portion 31a of the guide portion 31, as shown in FIG. It is constructed by wearing.

Since the inner peripheral portion 33 of the guide member 31 is tapered in a tapered shape from the distal end opening along the distal end portion 31a at the other end, the yarn bundle W is formed by the tapered inner peripheral portion 33.
Is smoothly inserted into the tubular object 30 while being guided. In addition, the friction coefficient of the inner peripheral surface of the inner peripheral portion 33, the inner peripheral surface of the film-like sheet 32, and the inner peripheral surface of the tubular mesh portion 35 is much smaller than the friction coefficient of the inner peripheral surface of the case 8. In the form of, for example, a matte-finished film or a film-like material coated with a material having a low coefficient of friction such as Teflon, the frictional resistance received when the yarn bundle passes is reduced. .

Further, a film-like sheet 32 wound around and fixed to the front end portion 31a, and a tubular film member 34
Is, for a root outer diameter D smaller than the inner diameter of the case 8,
The outer diameter d of the tip is further reduced, and the cylindrical object 30 is
It is configured to be inserted smoothly into

(3) With the yarn bundle W narrowed down, FIG.
As shown in (C), the pushing member 7 provided behind the yarn bundle narrowing portion 20 is advanced toward the case 8 to
The yarn bundle W is inserted into the cylindrical object 30 of FIG. Then, the end portion of the yarn bundle 3 protruding from the case 8 is gripped by the fixing member 9.

(4) Next, the guide portion 31 of the tubular object 30 is gripped by the support member 11 and held at that position. on the other hand,
By moving the case 8 and the thread bundle W in the same manner as in the first embodiment, only the cylindrical object 30 is extracted from the case 8 and the case 8 in which the thread bundle W is loaded is obtained.

Thereafter, the string-like band 3a is loosened to release the sheet-like material 2b.
Is released, the next yarn bundle W is supplied near the opening of the sheet-like material 2b, and the sheet 2b enters a standby state. On the other hand, the extracted tubular object 30 is inserted into the case 8 into which the yarn bundle W is inserted next, and is reused. Thereafter, the above operation is similarly repeated.

Third Embodiment A third embodiment of the yarn bundle loading method according to the present invention will be described with reference to a perspective view of the yarn bundle narrowing section 40 shown in FIG. It should be noted that the third embodiment relates to another yarn bundle narrowing-down means of the first embodiment or the second embodiment, and the description of the other means is omitted.

As shown in the figure, the yarn bundle narrowing section 40
A polyester film 2e (with a thickness of about 50 μm) whose inner peripheral surface is rolled into a cylindrical shape so that both ends overlap, and a stainless steel thin plate 2c which is similarly rolled into a cylindrical shape around its outer periphery ( A thickness of about 200 μm), a stainless steel wire 3b (3 mm in diameter) wound around the outer periphery at least once at even intervals, and a pair of fixed bars 4 supporting both ends thereof. By pulling the wire 3b through the thin plate 2c, the thin plate 2c and the film 2e in the thin plate 2c are further deeply wound, that is, by reducing the winding diameter, the yarn bundle W is narrowed down.

The film 2e narrowed down by the wire 3b has a low rigidity, so that even if the wire 3b is loosened,
When the original state is not recovered or when the recovery is slow, another film material (for example, about 200 μm thick) may be attached to the outer peripheral surface of the film 2e.

Further, since the life of both the thin plate 2c and the wire 3b is longer if the frictional resistance is lower, the surface of the wire 3b may be coated with an oil agent or coated with Teflon. Alternatively, it is effective to attach a film or plate a low friction material to the outer peripheral surface of the thin plate 2c.

[0040]

As is apparent from the above description, according to the first aspect of the present invention, the yarn bundle is radially moved from the surroundings to the inner diameter of the case through the sheet-like material formed in advance. When the thread bundle is inserted into the case, the thread bundle can be smoothly inserted into the case even when the thread bundle larger than the inner diameter of the case is inserted into the case. By inserting a part of the material deep inside the case, the sheet serves as a guide for the yarn bundle, and the yarn bundle slides on the surface of the sheet having much lower frictional resistance than the inner surface of the case. It is moved and inserted, so that the thread bundle is forcibly pushed into the case without damaging the single yarn on the outer periphery of the yarn bundle, and can be performed efficiently, and without the operator directly touching the yarn bundle. Hygienically mount the case Operation becomes possible.

Further, according to the second aspect of the present invention, the yarn bundle is narrowed down to the inner diameter of the case from the periphery in a radial direction through the previously formed sheet-like material, and the yarn bundle is previously formed into a cylindrical shape. Push things into the case. Then, after the yarn bundle is loaded into the cylindrical object in the case, only the cylindrical object is extracted, so that the single yarn of the yarn bundle is not damaged due to friction with the inner surface of the case and the production efficiency is improved smoothly. The yarn bundle can be loaded into the yarn.

According to the third aspect of the present invention, a plurality of cord-like bands are wound around the outer periphery of the sheet-like material, and the sheet-like material is wound in by pulling in the string-like band with the thread bundle inserted. The sheet can be wound deeper, i.e., into a smaller diameter. Therefore, the yarn bundle inserted into the sheet
Since the sheet-like material can be wound into a small diameter, narrowing down can be easily performed at a high density, and practical application as a production device can be easily realized at low cost.

According to the fourth aspect of the present invention, the tubular article used in the second aspect is not disposable but is repeatedly used many times, so that the cost can be reduced. No industrial waste is generated.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a procedure for loading a yarn bundle into a case according to a first embodiment of a yarn bundle loading method according to the present invention.

FIG. 2 is a schematic view showing a procedure for loading a yarn bundle into a case according to a second embodiment.

FIG. 3 is a perspective view showing an example of a cylindrical object used in the second embodiment.

FIG. 4 is a perspective view showing an example of a cylindrical object used in the second embodiment.

FIG. 5 is a schematic perspective view showing a state in which a yarn bundle is inserted into a yarn bundle narrowing-down unit according to a third embodiment.

[Explanation of symbols]

 1, 20, 40: thread bundle narrowing-down section 2a, 2b: sheet-like material 2c: thin plate 2e: film 3a, 3b: string-like band 8: case 30: tubular material W: thread bundle

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-126137 (JP, A) JP-A-63-242307 (JP, A) JP-A-61-86906 (JP, A) JP-A-60-1985 80463 (JP, A) JP-A-60-54711 (JP, A) JP-A-60-82104 (JP, A) JP-A-5-305220 (JP, A) JP-A-62-171710 (JP, A) (58) Field surveyed (Int.Cl. ⁶ , DB name) B01D 63/02 A61M 1/18

Claims (4)

(57) [Claims] 1. A method for loading a yarn bundle into a cylindrical case, comprising: inserting the yarn bundle from a front part to a deep part in a sheet-like material formed in advance in a cylindrical form; The sheet-like material is squeezed in the radial direction from the periphery to the inner diameter of the case or less, and the front portion of the sheet-like material is inserted into the case in the squeezed state.Then, the thread bundle in the sheet-like material is In the front direction of the sheet-like material, extrude the tip of the thread bundle to a position where it protrudes from the end of the case. While grasping the tip of the thread bundle and the case, only the sheet-like material is inserted into the case. A yarn bundle loading method characterized by extracting from a thread bundle. 2. A method for loading a yarn bundle into a cylindrical case, comprising: inserting the yarn bundle into a sheet-like material formed in a tubular shape in advance; In the radial direction, the case is further narrowed down to the inner diameter of the case. Extruding the yarn bundle in the opening direction of the case containing the tubular object to a position where the end of the yarn bundle protrudes from the end of the case, and while grasping the end of the yarn bundle and the case, A yarn bundle loading method, wherein only a cylindrical object is extracted from the case. 3. The method according to claim 1, wherein a plurality of cord-like bands are wound around the outer periphery of the sheet-like material, and the cord-like band is pulled in with the thread bundle inserted. A yarn bundle loading method, wherein the sheet-like material is wound up to narrow the yarn bundle. 4. The method according to claim 2, wherein, after the yarn bundle is loaded into the case, the extracted tubular material is inserted into the next case and reused. Thread bundle loading method.