Opening device of a fiber bundle

Abstract

A fiber bundle opening device includes a horizontal vibration unit comprising a plurality of horizontal vibration chambers configured to apply horizontal vibration to the fiber bundle according to the type of fiber bundle, wherein the horizontal vibration rollers have various shapes. The opening efficiency of the fiber bundle can be increased in the opening device by applying horizontal vibration to the fiber bundle through the plurality of horizontal vibration rollers, according to the type of fiber bundle.

Description

Background (a) Technical field

[0001] The present invention relates to an opening device for a fiber bundle, and more specifically to an opening device for a fiber bundle which is capable of maximizing the efficiency of the fiber opening by arranging different vibrating rollers according to a type of fiber. (b) Description of the related technique

[0002] In recent years, a composite material has been developed that surpasses the strength of a metal and the lightness and malleability of a plastic material. For example, the composite material can include fiber-reinforced plastic (FRP) and carbon fiber-reinforced plastic (CFRP).

[0003] The above composite material is a modern composite, which is a lightweight structural material with high strength and high elasticity using a fiber (carbon or glass fiber) as a reinforcing material, and exhibits excellent material characteristics.

[0004] When producing composite materials that use carbon or glass fibers, a process is needed to open the fiber bundle and spread it out. This opening process is especially important for fiber bundles containing a large number of fibers.

[0005] There are different types of fiber bundles. Specifically, since glass fibers are denser than carbon fibers, the opening effect using compressed air or vertical vibration is relatively low compared to carbon fibers. Conversely, carbon fibers have a lower specific gravity than glass fibers, and the opening effect using compressed air or vertical vibration is relatively high compared to glass fibers, but a compaction phenomenon occurs between individual fibers. Consequently, the need for an opening process and device that address the specific characteristics of each fiber has increased.

[0006] From US 2003 / 0 057 585 A1, an opening device for fiber bundles with a horizontal vibration device is already known, which has a large number of horizontal vibration rollers, whereby the horizontal vibration rollers can have different shapes.

[0007] The above information disclosed in this background section is only intended to enhance understanding of the background of the invention and may therefore include information that is not prior art and is already known to a person skilled in the art in this country with ordinary knowledge. overview

[0008] It is an object of the present invention to provide an opening device for fiber bundles made of composite material for the transport of the staple fibers by vibrating rollers.

[0009] The problem is solved by an opening device having the features of claim 1. Advantageous further developments are found in the dependent claims.

[0010] In particular, an opening device according to the invention comprises a horizontal vibration device having a plurality of horizontal vibration rollers configured to apply a horizontal directional vibration to the fiber bundle according to a type of fiber bundle, wherein the horizontal vibration rollers have different shapes. Furthermore, the opening device has a width controller provided at a lower current region of the horizontal vibration device to influence the width of the fiber bundle, wherein the width controller comprises: a base plate; guide walls provided on both sides of the base plate to guide the fiber bundle; and guide plates each coupled to the guide walls by a hinge.One of the many horizontal vibration rollers can have a first horizontal vibration roller which has a cylindrical shape in which a diameter gradually decreases in one direction of an outer circumference from a center thereof.

[0011] Another of the many horizontal vibration rollers can have a second horizontal vibration roller which has a cylindrical shape in which a diameter gradually decreases in one direction from an outer circumference of a center therein.

[0012] Another of the multiple horizontal vibration rollers can have a third horizontal vibration roller, which has a cylindrical shape and the same diameter.

[0013] Another of the multiple horizontal vibration rollers can have a fourth horizontal vibration roller, which has a cylindrical shape, has the same diameter, and has projections and recesses formed on an outer circumference of the fourth horizontal vibration roller.

[0014] If the fiber bundle is a carbon fiber, the horizontal directional vibration is applied to the fiber bundle in the order of the first horizontal vibration roll, the second horizontal vibration roll, and the third horizontal vibration roll.

[0015] The radius of curvature of an outer circumference of the second horizontal vibration roller is larger than the radius of curvature of an outer circumference of the first horizontal vibration roller.

[0016] If the fiber bundle is an optical fiber, the horizontal directional vibration is applied to the fiber bundle in the sequence of the third horizontal vibration roll, the first horizontal vibration roll, and the fourth horizontal vibration roll.

[0017] The width controller can also include a ruler to indicate the opening amount of the guide plate.

[0018] The opening device of a fiber bundle may further include a horizontal vibration device which is provided at an upper current region of the horizontal vibration device to apply the horizontal directional vibration to the fiber bundle.

[0019] The opening device of a fiber bundle may further include an air supply device which is provided at an upper flow region of the horizontal vibration device to blow compressed air into the fiber bundle.

[0020] The air supply device may include a fan to generate compressed air; and an air control valve to influence the amount of air supplied by the fan.

[0021] In accordance with the opening device of a fiber bundle according to an exemplary embodiment of the present invention as described above, the opening effect of the fiber bundle can be increased by applying horizontal vibrations to the fiber bundle by means of a plurality of horizontal vibration rollers according to a type of fiber bundle.

[0022] Furthermore, the manufacturing quality can be improved by influencing the width of an open fiber bundle using the width controller when a prepreg is manufactured after the opening process. Brief description of the characters

[0023] In the following detailed description, only certain exemplary embodiments of the present invention are shown and described for illustrative purposes. Fig. Figure 1 is a schematic view showing an opening device of a fiber bundle according to an exemplary embodiment of the present invention. Fig. Figure 2 is a schematic view showing an opening device of a fiber bundle according to a further exemplary embodiment of the present invention. Fig. 3A and Fig. Figure 3B shows an air supply device according to an exemplary embodiment of the present invention. Fig. 4A and Fig. Figure 4B shows a vertical vibration device according to an exemplary embodiment of the present invention. Fig. 5A and Fig. Figure 5B shows a first horizontal vibration roller according to an exemplary embodiment of the present invention. Fig. 6A and Fig. Figure 6B shows views of a second horizontal vibration roller according to an exemplary embodiment of the present invention. Fig. 7A and Fig. Figure 7B shows a third horizontal vibration roller according to an exemplary embodiment of the present invention. Fig. 8A and Fig. Figure 8B shows a fourth horizontal vibration roller according to an exemplary embodiment of the present invention. Fig. 9A and Fig. Figure 9B are top views showing a width controller of an exemplary embodiment of the present invention. Detailed description of the embodiments

[0024] The present invention is described in more detail below with reference to the accompanying figures, which illustrate exemplary embodiments of the present invention. As those skilled in the art will notice, the described embodiments can be modified in various ways without departing from the spirit and scope of the present invention.

[0025] For the purpose of clearly describing an exemplary embodiment of the present invention, parts not related to the description are omitted. The same reference numerals are used throughout the specification to refer to identical or similar parts.

[0026] The terminology used herein serves solely to describe certain embodiments and is therefore not intended to limit the invention in any way. As used herein, the singular forms "a" and "the" are to include the plural forms unless otherwise clearly indicated by the context. Furthermore, it should be understood that the terms "includes" and / or "comprehensive," when used in this description, indicate the presence of the aforementioned features, numbers, steps, operations, elements, and / or components / parts, but do not exclude the presence or addition of one or more features, numbers, steps, operations, elements, components / parts, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the related items listed.

[0027] Additionally, terms such as "unit", "-er", "-or", and "module", which are described in the description, refer to units for processing at least one function and can be implemented by hardware components and software components or combinations thereof.

[0028] Furthermore, for better understanding and to simplify the description, the size and thickness of each configuration shown in the drawings are optionally shown; the present invention is not limited to the drawings shown, and the thickness is exaggerated for the clarity of a plurality of parts and areas.

[0029] It should be noted that the term "vehicle" or "vehicle-" or other equivalent terms as used herein include motor vehicles in general, such as passenger cars including sports utility vehicles (SUVs), buses, trucks, various utility vehicles, watercraft including a variety of boats and ships, aircraft and the like, and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other vehicles powered by alternative fuels (for example, fuel derived from sources other than petroleum). As referenced herein, a hybrid vehicle is a vehicle that has two or more sources of propulsion, such as both gasoline-powered and electric-powered vehicles.

[0030] Furthermore, the control logic of the present invention can be implemented as non-volatile, computer-readable media on a computer-readable medium comprising executable program instructions that are executed by a processor, controller, or the like. Examples of computer-readable storage media include, without limitation, ROM, RAM, compact disc (CD)-ROMs, magnetic tapes, floppy disks, flash drives, smart cards, and optical data storage devices. The computer-readable recording medium can also be decentralized in network-connected computer systems, so that the computer-readable medium is stored and executed in a distributed manner, e.g., by a telematics server or a controller area network (CAN).

[0031] An opening device for a fiber bundle according to an exemplary embodiment of the present invention is described below in detail with reference to the accompanying figures.

[0032] As shown in the various embodiments of the Fig. 1 and Fig. 2, the opening device of a fiber bundle according to exemplary embodiments of the present invention includes an air supply device 100, a vertical vibration device 200, a horizontal vibration device 300, and a width controller 400.

[0033] In the opening device of the fiber bundle, the air supply device 100, the vertical vibration device 200, the horizontal vibration device 300, and the width controller 400 can be arranged in this order according to a movement sequence of the fiber bundle.

[0034] The fiber material used for the fiber bundle can be a carbon fiber bundle or a glass fiber bundle. For example, the fiber bundle can be fed through a pair of vertically arranged transfer rollers (not shown).

[0035] The fiber bundle, which is fed through the transmission rollers, runs through the air supply device 100.

[0036] Fig. Figure 3A is a side view showing an air supply device according to an exemplary embodiment of the present invention, and Fig. Figure 3B is a front view showing the air supply device according to the exemplary embodiment of the present invention.

[0037] As shown in the Fig. 3A-3B includes the air supply device 100, a fan 110 to blow compressed air onto the fiber bundle, and an air control valve 120 to influence the amount of air expelled by the fan 110. In this case, the height of the fan 110 can be regulated.

[0038] A user can regulate the desired intensity and amount of compressed air supplied to the fiber bundle by regulating the height of the fan 110, and by regulating the amount of air output by the fan 110, using the air control valve 120.

[0039] The compressed air emitted by the air supply device 100 preferably collides with the fiber bundle, causing the fiber bundle to bend and widen in a lateral direction. The fiber bundle is primarily opened due to the force in the lateral direction.

[0040] The fiber bundle, which runs through the air supply device 100, is fed to the vertical vibration device 200.

[0041] Fig. Figure 4A is a side view showing a vertical vibration device according to an exemplary embodiment of the present invention, and Fig. Figure 4B is a front view showing the vertical vibration device according to the exemplary embodiment of the present invention.

[0042] As shown in Fig. 4A-4B includes the vertical vibration device 200, a vertical vibration roller 210 to transfer the fiber bundle, and a vertical motor 220 to transmit a drive torque to the vertical vibration roller 210.

[0043] The vertical vibration roller 210 is moved upwards and downwards by the vertical motor 220 in a predetermined time period and collides with the fiber bundle which runs through an upper side of the vertical vibration roller 210 in a predetermined time period.

[0044] When the fiber bundle collides with the vertical vibration roller 210, the tension in the fiber bundle increases, and the bending force of the fiber bundle is increased. Conversely, when the fiber bundle does not collide with the vertical vibration roller 210, the tension in the fiber bundle is reduced, thus reducing the bending force of the fiber bundle.

[0045] In this way, the tension of the fiber bundle is changed, thus altering its bending coefficient. Consequently, a force is applied to the fiber bundle in a lateral direction, causing it to open.

[0046] The fiber bundle, which passes through the vertical vibration unit 200, is fed to the horizontal vibration unit 300. The horizontal vibration unit 300 contains a multitude of horizontal vibration rollers, which have different shapes. In this case, the multitude of horizontal vibration rollers can be arranged differently according to the type of fiber bundle.

[0047] First, the shapes of the multitude of horizontal vibration rollers are described in detail.

[0048] Fig. Figure 5A is a top view showing a first horizontal vibration roller according to an exemplary embodiment of the present invention, and Fig. Figure 5B is a sectional view showing the first horizontal vibration roller according to the exemplary embodiment of the present invention.

[0049] As shown in Fig. 5A-5B can be one of the plurality of horizontal vibration rollers, a first horizontal vibration roller 310 having a cylindrical shape with a diameter that decreases stepwise in the direction of an outer circumference from a center. In particular, the first horizontal vibration roller 310 can have a cylindrical shape with a convexly protruding center. In other words, as shown in Fig. 5B, the outer circumference of the first horizontal vibration roller 310 can have an elliptical shape based on a cross-sectional view.

[0050] The first horizontal vibration roller 310 has a hole at its center, and a first shaft (not shown) can be inserted into this central hole. The first shaft receives energy from a separate drive source (not shown) and is moved in a horizontal direction (for example, the latitude direction) for a predetermined period. Consequently, the first horizontal vibration roller 310 is moved in the horizontal direction, thus applying vibration to the fiber bundle in the horizontal direction.

[0051] As shown in Fig. 1. A pair of first guide rollers 320 can be provided on a lower section of the first horizontal vibrating roller 310. The fiber bundle passes through the first horizontal vibrating roller 310 and the pair of first guide rollers 320, so that a predetermined amount of tension is applied to the fiber bundle. While the tension is applied to the fiber bundle, force is applied to the fiber bundle by a horizontal directional vibration of the first horizontal vibrating roller 310, thus opening the fiber bundle.

[0052] In this case, since the first horizontal vibration roller 310 has a center with a convex cylindrical shape, a central section of the fiber bundle is bent compared to the front right and left ends of the fiber bundle. Consequently, a bundled fiber bundle is opened.

[0053] Fig. Figure 6A is a top view showing a second horizontal vibration roller according to an exemplary embodiment of the present invention, and Fig. Figure 6B is a cross-sectional view showing the second horizontal vibration roller according to the exemplary embodiment of the present invention.

[0054] As shown in the Fig. 6A-6B, another of the plurality of horizontal vibration rollers can be a horizontal vibration roller 330 which has a cylindrical shape in which a diameter is gradually reduced in the direction of an outer circumference from a center, and blocking walls 334 are formed at both ends of the second horizontal vibration roller 330. In particular, the second horizontal vibration roller 330 can have a center which has a convexly projecting cylindrical shape. In other words, as shown in Fig. 6B, an outer circumference 332 of the second horizontal vibration roller 330 can have an elliptical shape based on a cross-sectional view.

[0055] In this case, it is preferred that the radius of curvature R2 of an outer circumference 332 of the second horizontal vibration roller 330 is larger than the radius of curvature R1 of an outer circumference 332 of the first horizontal vibration roller 330. In particular, the outer circumference 332 of the second horizontal vibration roller 330 is more smoothly shaped than the outer circumference 332 of the first horizontal vibration roller 330.

[0056] The center of the second horizontal vibration roller 330 has a hole, and a second shaft (not shown) can be inserted into the center hole of the second horizontal vibration roller 330. The second shaft receives energy from a separate drive source (not shown) and is moved in a horizontal direction (for example, latitude) for a predetermined period of time. Consequently, the second horizontal vibration roller 330 is moved in the horizontal direction, so that vibration is applied to the fiber bundle in the horizontal direction.

[0057] As shown in Fig. 1. A pair of second guide rollers 340 can be provided on a lower section of the first horizontal vibrating roller 330. The fiber bundle runs between the second horizontal vibrating roller 330 and the pair of second guide rollers 340, so that a predetermined amount of tension is applied to the fiber bundle. When tension is applied to the fiber bundle, force is applied to the fiber bundle by a horizontal directional vibration of the second horizontal vibrating roller 330, thus opening the fiber bundle.

[0058] Fig. Figure 7A is a top view showing a third horizontal vibration roller according to an exemplary embodiment of the present invention, and Fig. Figure 7B is a cross-sectional view showing the third horizontal vibration roller according to the exemplary embodiment of the present invention.

[0059] As shown in Fig. 7A-7B, another of the multiple horizontal vibration rollers can be a third horizontal vibration roller 350, which has a cylindrical shape with the same diameter. In particular, as shown in Fig. 7B, the outer circumference of the third horizontal vibration roller 350 can have a straight shape.

[0060] The center of the third horizontal vibration roller 350 has a hole, and a third shaft (not shown) can be inserted into the center hole of the third horizontal vibration roller 350. The third shaft receives energy from a separate drive source (not shown) and is moved in a horizontal direction (for example, latitude) for a predetermined period of time. Consequently, the third horizontal vibration roller 350 is moved in the horizontal direction, so that vibration is applied to the fiber bundle in the horizontal direction.

[0061] As shown in Fig. 1. A pair of third guide rollers 360 can be provided on a lower section of the third horizontal vibrating roller 350. The fiber bundle runs between the third horizontal vibrating roller 350 and the pair of third guide rollers 360, so that a predetermined amount of tension is applied to the fiber bundle. In a state where tension is applied to the fiber bundle, force is applied to the fiber bundle by a horizontal vibration of the third horizontal vibrating roller 310, so that the fiber bundle opens.

[0062] Fig. Figure 8A is a top view showing a fourth horizontal vibration roller according to an exemplary embodiment of the present invention, and Fig. Figure 8B is a cross-sectional view showing the fourth horizontal vibration roller according to the exemplary embodiment of the present invention.

[0063] As shown in Fig. 8 The further of the plurality of horizontal vibration rollers can be a fourth horizontal vibration roller 370, which has a cylindrical shape with the same diameter, wherein projections and recesses are formed on an outer circumference of the fourth horizontal vibration roller 370, and blocking walls 374 are formed at both ends of the fourth horizontal vibration roller 370.

[0064] In particular, as shown in Fig. 8B, the outer circumference of the fourth horizontal vibration roller 370 has a straight shape. In this case, projections and recesses are formed on the outer circumference of the fourth horizontal vibration roller 370 (see designation “Z” of the Fig. 8B).

[0065] The center of the fourth horizontal vibration roller 370 has a hole, and a second shaft (not shown) can be inserted into the center hole of the fourth horizontal vibration roller 370. The fourth shaft receives power from a separate drive source (not shown) and is moved in a horizontal direction (for example, latitude) for a predetermined time period. Thus, the fourth horizontal vibration roller 370 is moved in the horizontal direction, so that vibration is applied to the fiber bundle in the horizontal direction.

[0066] As shown in Fig. 2. A pair of fourth guide rollers 380 can be provided on a lower section of the fourth horizontal vibrating roller 370. The fiber bundle runs between the fourth horizontal vibrating roller 370 and the pair of fourth guide rollers 380, so that a predetermined amount of tension is applied to the fiber bundle. In a state where tension is applied to the fiber bundle, force is applied to the fiber bundle by a horizontal directional vibration of the fourth horizontal vibrating roller 370, so that the fiber bundle opens.

[0067] The opening device of a fiber bundle is then described in detail according to a specific type of fiber.

[0068] First, a case is described in which the fiber bundle is a carbon fiber. In a case of carbon fiber, as shown in Fig. 1, in the plurality of horizontal vibration rollers, a first horizontal vibration roller 310, a second horizontal vibration roller 330, and a third horizontal vibration roller 350 are arranged in this order, so that the plurality of horizontal vibration rollers apply horizontal directional vibration to the fiber bundle.

[0069] Since the carbon fiber has a lower specific weight than that of the glass fiber, the opening effect due to the air supply device 100 and the vertical vibration device 200 is greater than that of the glass fiber, however, a compaction phenomenon of the fiber bundle is greater than that of the glass fiber.

[0070] Accordingly, compaction of the fiber bundle is solved by first applying horizontal directional vibration to the fiber bundle by the first horizontal vibration roller 310, which has an outer circumference with a relatively small radius of curvature, and secondly applying horizontal directional vibration to the fiber bundle by the second horizontal vibration roller 330, which has an outer circumference with a relatively large radius of curvature, and finally applying horizontal directional vibration to the fiber bundle by the third horizontal vibration roller 350, which has a flat outer circumference, so that the opening efficiency can be increased while damage to the fiber is minimized.

[0071] Next, a case is described where the fiber bundle is an optical fiber. In an optical fiber case, as shown in Fig. 2, in the multitude of horizontal vibration rollers, a third horizontal vibration roller 350, a first horizontal vibration roller 310, and a fourth horizontal vibration roller 370 are arranged in this order, so that the multitude of horizontal vibration rollers apply horizontal directional vibration to the fiber bundle.

[0072] Since the glass fiber has a higher specific gravity than the carbon fiber, the opening effect due to the air supply device 100 and the vertical vibration device 200 is less than that of the carbon fiber.

[0073] Therefore, to improve the opening effect of the fiber bundle, first, after a uniform shear force is applied to the fiber bundle by the third horizontal vibrating roller 350, which has a flat outer circumference, any compaction of the fiber bundle is released by the first vibrating roller 310, which has an outer circumference with a small radius of curvature. Finally, when vibration is applied to the flat outer circumference by the fourth horizontal vibrating roller 370, which has projections and recesses, any remaining compaction between the fibers of the fiber bundle can be released.

[0074] In contrast to carbon fiber, the compaction between fibers of the fiber bundle becomes hard after compressed air is applied to the glass fiber by the air supply device, when horizontal directional vibration is applied to the fiber bundle by a vibrating roller which has an outer circumference with a small radius of curvature.

[0075] Since the specific gravity of the optical fiber is high, the opening effect is not significant due to the compressed air. Consequently, when horizontal vibration is applied to the fiber bundle by a horizontal vibration roller with an outer circumference exhibiting a small radius of curvature, in a compressed state, the fiber is split, thus impairing the opening effect. Therefore, the horizontal vibration roller is arranged in the sequence described above to increase the opening efficiency of an optical fiber bundle.

[0076] The width controller is then described in detail with reference to the attached figures.

[0077] Fig. Figure 9A is a top view showing a width controller according to an exemplary embodiment of the present invention, and Fig. Figure 9B is a side view showing the width controller according to the exemplary embodiment of the present invention.

[0078] As shown in Fig. 9A-9B, the width controller 400 is a device arranged so that the fiber bundle, which is opened when passing through the horizontal vibration device 300, is ejected with a desired width.

[0079] On the contrary, after the fiber bundle is opened, it is advantageous to collect the fiber bundle with a predetermined width in order to produce the prepreg. Therefore, there is a need to collect the fiber bundle with a predetermined width using the width controller 400.

[0080] The width controller 400 includes a base plate 410, guide walls 420 provided on both sides of the base plate to guide the fiber bundle, and a guide plate 430 connected to the guide wall by a hinge. In this case, a ruler 440 can be provided on the base plate 410 to indicate the opening value of the guide plate 430.

[0081] The guide plate 430 is coupled to the guide wall 420 via a joint, so that the opening amount of the guide plate 430 is set by operation of the user or a separate drive torque. Consequently, the user can control the fiber bundle to be output at a desired width.

[0082] In this case, the width of the fiber bundle can be precisely adjusted by a ruler 440, which is formed on the base plate 410.

Claims

[1] Opening device of a fiber bundle comprising a horizontal vibration device (300) which has a plurality of horizontal vibration rollers which are configured to apply a horizontal directional vibration to the fiber bundle according to a type of fiber bundle, wherein the horizontal vibration rollers have different shapes, further comprising: a width controller (400) which is provided at a lower current region of the horizontal vibration device (300) to influence a width of the fiber bundle, where the width controller (400) has: a base plate (410); Guide walls (420) which are provided on both sides of the base plate (410) to guide the fiber bundle; and Guide plates (430), each of which is coupled to the guide walls (420) by a joint. [2] Opening device according to claim 1, wherein one of the plurality of horizontal vibration rollers has a first horizontal vibration roller (310) which has a cylindrical shape in which a diameter in one direction of an outer circumference is gradually reduced from a center thereof. [3] Opening device according to claim 2, wherein a further plurality of horizontal vibration rollers has a second horizontal vibration roller (330) which has a cylindrical shape in which a diameter in one direction of an outer circumference is gradually reduced from a center thereof. [4] Opening device according to claim 3, wherein a further plurality of horizontal vibration rollers comprises a third horizontal vibration roller (350) which has a cylindrical shape which has the same diameter. [5] Opening device of a fiber bundle according to claim 4, wherein a further plurality of horizontal vibration rollers comprises a fourth horizontal vibration roller (370) which has a cylindrical shape having the same diameter and has projections and recesses formed on an outer circumference of the fourth horizontal vibration roller (370). [6] Opening device according to claim 5, wherein the fiber bundle is a carbon fiber, wherein the horizontal directional vibration is applied to the fiber bundle in the sequence of the first horizontal vibration roller (310), the second horizontal vibration roller (330), and the third horizontal vibration roller (350). [7] Opening device according to claim 6, wherein a radius of curvature of an outer circumference of the second horizontal vibration roller (330) is larger than a radius of curvature of an outer circumference of the first horizontal vibration roller (310). [8] Opening device according to claim 5, wherein if the fiber bundle is an optical fiber, the horizontal direction vibration is applied to the fiber bundle in a sequence of the third horizontal vibration roller (350), the first horizontal vibration roller (310), and the fourth horizontal vibration roller (370). [9] Opening device according to claim 1, wherein the width controller (400) further comprises a ruler (440) to indicate an opening amount of the guide plate (430). [10] Opening device according to claim 1, further comprising a horizontal vibration device (300) which is provided at an upper current region of the horizontal vibration device (330) to apply the horizontal directional vibration to the fiber bundle. [11] Opening device according to claim 10, further comprising an air supply device (100) which is provided at an upper flow region of the horizontal vibration device (300) to blow compressed air into the fiber bundle. [12] Opening device according to claim 11, wherein the air supply device (100) comprises: a fan (110) to generate compressed air; and an air control valve (120) to influence an amount of air from the fan (110).

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