JP2011202300A - Filament bundle grasping mechanism, apparatus and method for producing filament bundle using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and apparatus for producing a filament bundle, which, in producing a filament bundle, prevents catch of filaments at a joint of a filament bundle cover, damage such as break or cut caused by the catch and reduction in quality of filament bundle and yield.SOLUTION: The filament bundle grasping mechanism includes covering at least a part of the outer peripheral surface of the filament bundle 1 obtained by bundling a prescribed number of filaments, handling the filament bundle in which the filament bundle guide surface of the filament bundle cover 3 in contact with the outer circumference of the filament bundle is contacted with and separated from the outer peripheral surface of the filament bundle in at least three directions toward approximately central directions.

Description

  The present invention relates to a yarn bundle gripping mechanism, and a yarn bundle manufacturing apparatus and method using the same.

  Conventionally, as to a manufacturing method for cutting a yarn bundle wound around a winding frame, a part of the yarn bundle 1 wound around the winding frame 2 is covered with a yarn bundle cover 3 as shown in FIGS. In general, a method is known in which the yarn bundle 1 is loaded into a cylindrical yarn bundle container 40 after the end of the yarn bundle cover 3 is cut by the cutter 4 (see, for example, Patent Document 1). .

  However, in such a method, since the yarn bundle cover 3 comes into contact with the yarn bundle 1 from two directions, the yarn is caught at the joint between the guides in the yarn bundle cover 3 when gripped. It may be lost. This is particularly noticeable when the yarn bundle 1 is a bulky material, when the wound yarn bundle 1 has a distorted cross-sectional shape, or when the yarn has a fineness. If the yarn bundle container 5 is loaded in this state, the pinched yarn is unnecessarily pulled, and breaks or breaks and is damaged, leading to a reduction in yarn bundle quality and a reduction in yield.

JP 2006-198513 A

An object of the present invention is to solve the above-described problems of the prior art, in which the yarn is caught at the joint of the yarn bundle cover, resulting in damage such as broken or broken yarn, and yarn. It is an object of the present invention to provide a yarn bundle manufacturing method and a manufacturing apparatus that can prevent a reduction in bundle quality and yield.

In order to achieve the above object, the present invention has the following configuration.
1. A yarn bundle having a yarn bundle cover having a yarn bundle guide surface that can be contacted and separated from the outer circumferential surface, covering at least a part of the outer circumferential surface of the yarn bundle formed by bundling a predetermined number of yarns. In the gripping mechanism, the yarn bundle gripping mechanism is characterized in that the yarn bundle guide surface can contact the outer peripheral surface of the yarn bundle in a substantially central direction from at least three directions.
2. Among the yarn bundle guide surfaces, the yarn bundle guide surface capable of contacting the yarn bundle from at least one direction can be contacted in advance at a point where the yarn bundle guide surfaces contacting the yarn bundle from the other two directions intersect. 2. The yarn bundle gripping mechanism according to 1 above, wherein
3. 3. The yarn bundle gripping mechanism according to 1 or 2, wherein a plurality of the yarn bundle guide surfaces are provided in the longitudinal direction of the yarn bundle.
4). The radius of the arc that contacts the outer periphery of the yarn bundle on the yarn bundle guide surface changes at least partially in accordance with the shape of the yarn bundle in the longitudinal direction of the yarn bundle gripping mechanism. 4. The yarn bundle gripping mechanism according to any one of 3 above.
5. 5. A yarn bundle manufacturing apparatus using the yarn bundle gripping mechanism according to any one of 1 to 4 above.
6). 6. A method for manufacturing a yarn bundle, which is performed using the yarn bundle gripping mechanism described in 5 above.

  According to the present invention, as described below, it is possible to obtain a high-quality yarn bundle that is free from damage such as breakage or breakage of the yarn.

It is the schematic which shows an example of the yarn bundle processing apparatus which manufactures the yarn bundle by this invention. FIG. 2 is a plan view of the periphery of a yarn bundle cover 3 when FIG. 1 is viewed from the AA direction. It is the side view (right view) which looked at FIG. 2 from the BB direction. FIG. 3 is a diagram showing the next operation of FIG. FIG. 5 is a diagram illustrating the next operation of FIG. 4. It is a figure which shows the operation | movement following FIG. FIG. 7 is a right side view of FIG. 6. It is the elements on larger scale of FIG. It is the figure which expand | deployed the relationship of the outer periphery of the yarn bundle 1 in FIG. 8, and the contact surface of each guide at the point C2. It is a perspective view which shows an example of a guide. It is the figure which showed the relationship of the contact surface when using the guide which increased the contact area. It is the figure showing the DF cross section of FIG. It is the schematic which shows an example of the yarn bundle processing apparatus which manufactures the yarn bundle by this invention, and shows the place which cut | disconnects a yarn bundle. It is the schematic which shows an example of the yarn bundle processing apparatus which manufactures the yarn bundle by this invention. It is a right view of FIG. It is a figure which shows the operation | movement following FIG. It is a figure which shows the operation | movement following FIG. It is a figure which shows the operation | movement following FIG. It is the schematic which shows an example of the manufacturing method of the conventional yarn bundle. It is the figure showing the HH cross section of FIG.

  The present invention relates to a method and an apparatus for manufacturing a yarn bundle such as a synthetic fiber. Hereinafter, examples of the best embodiment of the present invention will be described with reference to a predetermined number of hollow fibers used for blood filtration or water filtration. Based on the example which manufactures the bundled yarn bundle, it demonstrates referring drawings.

  FIG. 1 shows a yarn bundle processing apparatus for manufacturing a yarn bundle according to an embodiment of the present invention. A yarn bundle 1 is wound on a winding frame 2 by winding a predetermined number of yarns on a winding bundle winding device (not shown). After forming, the winding frame 2 is shown installed on the support shaft 5 of the yarn bundle processing device.

  In the vicinity of the yarn bundle 1, a yarn bundle cover 3 that covers and handles at least a part of the outer circumferential surface of the yarn bundle, and a cutting blade 4 that cuts an outer portion of the yarn bundle 1 that is not covered by the yarn bundle cover 3 are installed. Has been.

  The yarn bundle cover 3 and the cutting blade 4 are supported by a driving device (not shown) and a guide that is a yarn bundle guide surface so that the yarn bundle cover 3 and the cutting blade 4 can freely come into contact with and separate from the outer circumferential surface of the yarn bundle 1.

  FIG. 2 is a plan view of the periphery of the yarn bundle cover 3 viewed from the AA direction in FIG.

  Moreover, the side view seen from the BB direction in FIG. 2 is shown in FIG.

  The guide 11 a and the guide 11 b have arc-shaped yarn bundle guide surfaces 18 a and 18 b and introduction portions 19 a and 19 b, respectively, and a plurality of guides 11 a and 11 b are installed in the longitudinal direction of the yarn bundle 1.

  Each of the guide 11a and the guide 11b is connected to the arm 13 by a bar 12 and is supported by the arm 10 and a gear 14 so as to be freely opened and closed.

  An opening / closing cylinder 15 is installed on the support 10, and its tip is connected to the arm 13.

  As described above, when the open / close cylinder 15 is operated, the guides 11a and 11b are opened and closed.

  On the other hand, a plurality of inner guides 11d and a plurality of outer guides 11c are installed between the guides 11a and 11b. In the example of FIG. 3, there are two places each.

  The inner guide 11 d is fixed to the support 10.

  Further, the outer guide 11 c is connected to a turning cylinder 16 installed on the support body 10 via a link arm 17.

  As described above, the yarn bundle gripping mechanism 50 is configured. However, the yarn bundle gripping mechanism according to the present invention does not necessarily include the link arm, the turning cylinder, or the like, and the yarn bundle guide surface of the yarn bundle cover acts as a yarn bundle by mechanical or electrical action. It has a mechanism that can contact and disengage.

  Using such a yarn bundle gripping mechanism 50, the order in which the guide that is the yarn bundle guide surface is brought into contact with the outer peripheral side of the yarn bundle 1 in the substantially central direction will be described with reference to FIGS. 2 and 4 to 7. explain.

  In FIG. 2, a predetermined distance is provided between the yarn bundle cover 3 and the yarn bundle 1 wound around the winding frame 2. Next, the yarn bundle cover 3 is brought close to the yarn bundle by a driving device and a guide guide (not shown). This state is shown in FIG.

  Here, only the inner guide 11d is brought into contact with the outer circumferential surface of the yarn bundle 1 in the substantially central direction.

  Next, as shown in FIG. 5, the turning cylinder 16 is operated 180 degrees clockwise about the turning center 32 (on the paper), and the outer guide 11 c is turned 180 degrees via the link arm 17, so that the yarn bundle 1 is brought into contact.

  As shown in FIG. 5, the outer guide 11c and the inner guide 11d are in contact with the yarn bundle 1 from two directions.

  Next, as shown in FIG. 6, the open / close cylinder 15 is operated to bring the guides 11 a and 11 b into contact with the yarn bundle 1 via the arm 13, the gear 14, and the bar 12.

  FIG. 7 shows a side view of the state of FIG. The outer surface of the yarn bundle 1 is almost covered, and the respective guides are in contact with the outer peripheral surface of the yarn bundle 1 substantially in the center direction.

  FIG. 8 shows a partially enlarged view of the vicinity of the guides 11a and 11b in FIG.

  The guides 11a and 11b, the outer guide 11c, and the inner guide 11d are in contact with each other from the four directions on the substantially entire circumference of the yarn bundle 1 while overlapping.

  The points C1 and C2 where the guides 11a and 11b overlap are points where the inclined surfaces of the guides intersect each other in the process of closing the guides 11a and 11b, and are the points where the yarns are most easily sandwiched.

  Accordingly, when this portion is previously contacted and restricted by the thread bundle guide surface from at least one direction, that is, when the outer guide 11c and the inner guide 11d are regulated and contacted in an R shape as shown in FIG. Even in the case where the constituting yarn is a bulky material, or when the cross-sectional shape of the wound yarn bundle 1 is not a circular diameter but is distorted, or in the case of a yarn having a small fineness, the yarn It is possible to contact without interposing.

  Note that the radius r0 of the arc that each guide abuts may be appropriately selected according to the winding state of the yarn bundle 1, the delivery condition to the next process, and the like, which is usually substantially the same as the cross-sectional radius of the yarn bundle 1. preferable.

  Even when the yarn bundle 1 is drawn up, that is, when the contact radius r0 of the guide is smaller than the cross-sectional radius of the yarn bundle 1, the points C1 and C2 where the guides 11a and 11b overlap as described above are removed in advance. Since the guide 11c and the inner guide 11d are regulated and contacted in an R shape, the guide 11c and the inner guide 11d can be similarly contacted without pinching the yarn.

  In one embodiment of the present invention, the outer guide 11c and the inner guide 11d are installed in two places, but the length is not limited to this, and the length of the yarn bundle cover 3, the diameter of the yarn bundle 1, and the winding state For example, it may be changed by three or more locations.

  FIG. 9 is a diagram in which the relationship between the outer periphery of the yarn bundle 1 in FIG. 8 and the contact surface between each guide is developed at point C2.

  In FIG. 9, the horizontal axis represents the distance in the longitudinal direction of the yarn bundle 1, and the vertical axis represents the phase of the outer periphery of the yarn bundle and the contact area of each guide with diagonal lines.

  Further, contact areas by the guides 11a and 11b, the outer guide 11c, and the inner guide 11d are indicated by 11as, 11bs, 11cs, and 11ds, respectively.

  The ratio of the total contact area of the guide with respect to the area of the outer periphery of the yarn bundle (L × 2πr0 in FIG. 9) in the entire length L of the yarn bundle cover 3 is the winding state of the yarn bundle 1, the delivery condition to the next process, It may be appropriately selected depending on the above, and is usually preferably 30% to 50%.

  In addition, when the yarn bundle 1 is very bulky, for example, when the yarn bundle 1 is composed of a thread that has been subjected to strong winding, the shape of the guides 11a and 11b shown in FIG. b), it is possible to grip the yarn bundle 1 at the opposite phase portions of 11as and 11bs shown in FIG. 9, and the area of the outer periphery of the yarn bundle in the entire length L of the yarn bundle cover 3 (in FIG. 9, As shown in FIG. 11, the ratio of the total contact area of the guide to L × 2πr0) is increased to 50% to 80% as shown in FIG. It becomes possible to contact.

The abutting radius r0 in FIG. 8 may be constant in the longitudinal direction of the yarn bundle 1 as described above, but in FIG. 12 showing a DF cross section of FIG. As shown, the yarn bundle cover 3 may be gradually enlarged from near the center toward both ends. In this case, it is preferable to enlarge from 1/3 to 1/8 of the entire length L of the yarn bundle cover. However, the yarn bundle cover is not limited to this and may be loosely enlarged from the center of the yarn bundle cover toward both ends.
Further, when the enlargement ratio of the contact radius r0 and the contact radius r4 at both ends is expressed as (r4 / r0-1)%, 3% to 10% is preferable, and the contact radii r1 to r3 in the middle are linear. Interpolation is preferable, but the present invention is not limited to this, and may be appropriately selected depending on the winding state, winding shape, winding diameter, and the like of the yarn bundle 1.

  By doing so, even if the center of the yarn bundle 1 and the center of the yarn bundle cover 3 are misaligned, the yarn bundle 1 can be brought into contact without being pinched or damaged, and the yarn bundle quality and step can be improved. It is possible to prevent the accumulation from decreasing.

  After covering at least a part of the yarn bundle 1 with the yarn bundle cover 3 without pinching or damaging the yarn as described above, the cutting blade 4 is rotated by a motor (not shown) as shown in FIG. The cutting blade 4 is brought close to the yarn bundle 1 and the yarn bundle cover 3 by a driving device and a guide guide (not shown), and a part of the yarn bundle 1 is cut out. The yarn bundle 1 cut out in the yarn bundle cover 3 is sent to the next step, and is extracted from the yarn bundle cover 3 and assembled.

  When the next yarn bundle 1 is cut out, the winding frame 2 is rotated by a predetermined angle by the support shaft 5 and a motor (not shown), and the yarn bundle cover 3 is again approached to the yarn bundle 1 remaining in the winding frame 2.・ Abut and cut out sequentially.

  On the other hand, the following is also preferable as another form of the yarn bundle gripping mechanism 50.

  FIG. 14 shows another form of the yarn bundle cover 3 viewed from the AA direction in FIG.

  FIG. 15 is a right side view of FIG.

  The chuck cylinder 20 allows the operation block 22 to be opened and closed freely by flowing pressurized air through a pressure port (not shown), and a plate 21 that supports the yarn bundle cover 3 is installed from a fixed portion of the chuck cylinder 20. Yes.

The guides 23 a and 23 b have an arc-shaped yarn bundle guide surface corresponding to the yarn bundle 1, a plurality of guides 23 a and 23 b are installed in the longitudinal direction of the yarn bundle 1, and are fastened to the plate 21.
The guides 24 a and 24 b have arcuate yarn bundle guide surfaces corresponding to the yarn bundle 1, and a plurality of guides 24 a and 24 b are installed in the longitudinal direction of the yarn bundle 1, and are swingable with respect to the guides 23 a and 23 b by the shaft 27. It is supported by.
Further, one ends of the guides 24 a and 24 b are connected by a shaft 26 and engage with the operation block 22.
The guides 25a and 25b have an arc-shaped yarn bundle guide surface corresponding to the yarn bundle 1, and are installed in the longitudinal direction of the yarn bundle 1, and are swingable with respect to the guides 24a and 24b by the shaft 30. It is supported by.
In addition, a shaft 31 is installed in a part of the guides 25a and 25b, and a link 28 engaged with the shaft 31 and a shaft 29 installed in the guides 23a and 23b are engaged.
The sequence in which the yarn bundle gripping mechanism 50 configured as described above is brought into contact with the yarn bundle 1 will be described with reference to FIGS. 14 and 16 to 18.
In FIG. 14, the yarn bundle cover 3 and the yarn bundle 1 are installed at a predetermined distance.
The yarn bundle cover 3 is supported by a driving device and a guide guide (not shown) so that the yarn bundle cover 3 can freely come into contact with and separate from the yarn bundle 1.
In FIG. 16, the yarn bundle cover 3 is moved toward the yarn bundle 1 by a driving device and a guide guide (not shown), and a part thereof is in contact.
Next, compressed air is caused to flow through the pressure port of the chuck cylinder 20, and the operation blocks 22 each move outward, and torque is applied to the guides 24 a and 24 b through the shaft 26 to start closing.
When the guides 24a and 24b start to close, torque is also applied to the guides 25a and 25b through the shaft 30, and the guides 25a and 25b start to close due to the action of the link 28.
This state is shown in FIG.
Here, the tip portions of the guides 25a and 25b have already overlapped, so that the yarns constituting the yarn bundle 1 can be abutted thereafter without missing any yarn.
Further, the operation blocks 22 are moved outward, and the guides 24a, 24b, 25a, and 25b cover the outer surface of the yarn bundle 1, and are all in contact with each other. This state is shown in FIG.
In this case, even if the yarn constituting the yarn bundle 1 is a bulky material, or even if the wound yarn bundle 1 has a distorted cross-sectional shape instead of a circular diameter, or a yarn having a fineness. Even if it is a strip, since the guides 23a, 23b, 24a, 24b, 25a, and 25b abut toward the center of the yarn bundle 1, the yarn is not pinched or broken between the guides. A good yarn bundle 1 can be obtained.
After covering at least a part of the yarn bundle 1 with the yarn bundle cover 3 without pinching or damaging the yarn as described above, the yarn bundle 1 and the yarn bundle cover 3 are brought into contact with a cutting blade (not shown). And part of the yarn bundle 3 is cut out. The yarn bundle 1 cut out in the yarn bundle cover 3 is sent to the next step, and is extracted from the yarn bundle cover 3 and assembled.
The chuck cylinder 20 is an air cylinder that uses compressed air. However, the present invention is not limited to this, and the object of the present invention can be achieved even by using an electric motor such as a stepping motor or a servo motor. . Further, the link mechanism is used so that the yarn bundle cover 3 can be opened and closed by only one operation of the chuck cylinder 20. However, the link mechanism is not caught by this, and a motor or the like is individually loaded around the rotation axis of each guide. The object of the present invention can also be achieved by opening and closing while electrically synchronizing.

The present invention is preferably applied to the production of a yarn bundle in which a predetermined number of hollow fibers used for blood filtration, water filtration, and the like are bundled, but the scope of application thereof is limited to these, such as production of all yarn bundles such as brushes. It is not a thing.

1: Thread bundle 2: Winding frame 3: Thread bundle cover 4: Cutting blade 5: Support shaft 10: Support bodies 11a, 11b, 11c, 11d: Guide 12: Bar 13: Arm 14: Gear 15: Opening / closing cylinder 16: Swivel cylinder 17: Link arm 20: Chuck cylinder 21: Plate 22: Operation block 23a, 23b: Guide 24a, 24b: Guide 25a, 25b: Guide 26, 27: Shaft 28: Links 29, 30, 31: Shaft 32: Swing Center 40: Yarn bundle container 50: Yarn bundle gripping mechanism

Claims (6)

A yarn bundle having a yarn bundle cover having a yarn bundle guide surface that can be contacted and separated from the outer circumferential surface, covering at least a part of the outer circumferential surface of the yarn bundle formed by bundling a predetermined number of yarns. In the gripping mechanism, the yarn bundle gripping mechanism is characterized in that the yarn bundle guide surface can contact the outer peripheral surface of the yarn bundle in a substantially central direction from at least three directions. Among the yarn bundle guide surfaces, the yarn bundle guide surface capable of contacting the yarn bundle from at least one direction can be contacted in advance at a point where the yarn bundle guide surfaces contacting the yarn bundle from the other two directions intersect. The yarn bundle gripping mechanism according to claim 1. The yarn bundle gripping mechanism according to claim 1 or 2, wherein a plurality of the yarn bundle guide surfaces are provided in a longitudinal direction of the yarn bundle. The radius of an arc that contacts the outer periphery of the yarn bundle on the yarn bundle guide surface is at least partially changed in accordance with the shape of the yarn bundle in the longitudinal direction of the yarn bundle gripping mechanism. 4. The yarn bundle gripping mechanism according to any one of items 1 to 3. A yarn bundle manufacturing apparatus using the yarn bundle gripping mechanism according to any one of claims 1 to 4. A method for manufacturing a yarn bundle, which is performed using the yarn bundle gripping mechanism according to claim 5.

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