JP2005225644A - Traverse guide device for winder, winder, and carbon fiber bundle package manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traverse guide device for a winder capable of stably winding even a flat tape-like fiber bundle into the predetermined yarn width by restricting fluctuation of yarn width, to provide a winder including the same, and to provide a carbon fiber package manufacturing method using the same. <P>SOLUTION: In the guide device for traverse when winding the fiber bundle around a bobbin, at least one of a plurality of guide members for guiding the fiber bundle is supported freely to float, and the guide member can be displaced in a direction for relaxing increase/decrease of tensile force of the fiber bundle with traversing operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a traverse guide device for a winder suitable for a winder of a reinforcing fiber bundle such as a carbon fiber bundle, and in particular, a traverse guide device for a winder capable of winding a fiber bundle with a stable yarn width. And a winder using the same and a method for manufacturing a carbon fiber bundle package.

  Many of the reinforcing fiber bundles typified by carbon fiber bundles and glass fiber bundles are made into so-called prepregs in which the fiber bundles are impregnated with a matrix resin, and then commercialized as fiber-reinforced plastic molded articles. In recent years, with the trend toward weight reduction of the fiber-reinforced plastic molded body, a high-quality prepreg having a small thickness and few thickness spots is being demanded. When manufacturing such a prepreg, it is necessary to spread the reinforcing fiber bundle thinly and widely so as not to impair the quality of the bundle. For this reason, it has become an important issue to wind up the reinforcing fiber bundle as a raw material of the prepreg in a bobbin in a state where the reinforcing fiber bundle is thinly and uniformly spread in advance.

In a typical winder, the fiber bundle is regularly wound in a twill shape by a traverse guide device that reciprocates in parallel with the rotation axis of the winding bobbin. On the other hand, the following techniques are conventionally known as a traverse guide device for winding a flat tape-shaped reinforcing fiber bundle that has been spread thinly in advance with a stable yarn width as described above. That is, a pair of upper guide rollers arranged orthogonal to the rotation axis of the winding bobbin, a pair of lower guide rollers arranged parallel to the rotation axis of the winding bobbin, and a conical guide roller between them And at least one of the upper guide rollers has a drum shape with a concave central portion in the rotation axis direction, and at least one of the lower guide rollers has a drum shape with a drum shape with a central portion in the rotation axis direction swelled. Known (for example, Patent Document 1). In addition, it includes a pair of conical guide rollers whose rotational axes are twisted relative to each other in space, and a parallel guide roller having a rotational axis substantially parallel to the take-up bobbin, and is flattened by the conical guide rollers. A traverse guide device is also known in which a tape-shaped fiber bundle is twisted substantially at a right angle and guided to a parallel guide roller (for example, Patent Document 2).
JP 2001-348166 A JP 10-330038 A

  However, these conventional traverse guide devices have the following drawbacks. That is, the traverse guide device disclosed in Patent Document 1 uses a drum-shaped guide roller to stabilize the traveling yarn path of the fiber bundle, and the yarn width is once narrowed so that the alignment of the single fibers is disturbed, As a result, the yarn width on the fiber bundle package becomes narrow or partial twist occurs in the fiber bundle. Further, in the traverse guide device disclosed in Patent Document 2, the guide roller disposed at the uppermost part has a conical shape, and the fiber bundle is twisted at the same time as the first contact with the conical guide roller. However, the fiber bundle caused a side slip in the width direction, and the fiber bundle was easily twisted. As a result, the yarn width was narrowed and was not stable.

  Accordingly, an object of the present invention is to take into account the drawbacks of the prior art as described above, even for a flat tape-like fiber bundle, a winding capable of stably winding with a predetermined yarn width while suppressing fluctuations in the yarn width. An object of the present invention is to provide a traverse guide device for a take-up machine and a winder including the same, and to provide a method for manufacturing a carbon fiber bundle package using the take-up guide device.

  In order to solve the above problems, a traverse guide device for a winding machine according to the present invention is a guide device that traverses a fiber bundle when it is wound around a bobbin, and a plurality of guide members that guide the fiber bundle. At least one of them is supported in a floating manner, and the guide member is configured so as to be displaceable in a direction that relaxes increase / decrease in fiber bundle tension caused by traversing.

  This traverse guide device for a winder can be applied to a normal fiber bundle, but is particularly suitable when the fiber bundle is a flat tape-like fiber bundle. Among them, as described above, it is suitable for the case of a reinforcing fiber bundle for resin reinforcement, which is a raw material for prepreg, which needs to be spread thinly and widely.

  The floating support of the guide member supported by the floating can be performed by a spring, for example. However, in addition to the spring, floating support by a cylinder device, a balance weight, or an elastic member is also possible.

  A free rotating roller can be used as a guide member for guiding the fiber bundle. A free rotating roller can be used not only for the floatingly supported guide member but also for other guide members.

  The plurality of guide members including the guide member supported in a floating manner include three guide members that are arranged in parallel to each other and sequentially guide the fiber bundle, and the second guide member that guides the fiber bundle is supported in a floating manner. It can be set as the structure currently made. In order to stably reduce or increase or decrease the fiber bundle tension (absorb the fluctuation in tension) in a state where there is no twist or the like, at least three guide members are provided in this way, and the middle guide member is floated and supported. It is preferable to be able to displace the fiber bundle tension in a direction that reduces the increase or decrease. The three guide members that guide the fiber bundle in this order may include a winder pressure roller. In other words, the winder pressure roller may constitute the most downstream guide member, and the guide member that is floated and supported immediately before the guide member may be arranged.

  The winder according to the present invention includes the above-described traverse guide device for a winder.

  Moreover, the manufacturing method of the carbon fiber bundle package which concerns on this invention consists of a method of winding up a carbon fiber bundle with such a winding machine. In this method for manufacturing a carbon fiber bundle package, the carbon fiber bundle can be substantially untwisted. Therefore, it can be set as the package of the fiber bundle for resin reinforcement of a preferable form as a raw material of a prepreg.

  In the present invention, when the flat tape-shaped fiber bundle is traversed during winding, the guide member supported by floating can be displaced in a direction to relax the increase and decrease of the fiber bundle tension, thereby absorbing and suppressing tension fluctuations. The fluctuation of the yarn width accompanying the fluctuation of the tension can be suppressed, and the winding can be stably performed with a predetermined yarn width. As a result, a thin and uniformly spread fiber bundle in a form preferable as a raw material for the prepreg as described above is wound around the bobbin. Further, by using the middle guide member of the three guide members arranged in parallel as the floating support guide member, the traveling fiber bundle can be twisted even when the floating support guide member is displaced. And can be kept in a stable posture, and wound as a preferred untwisted fiber bundle in the form of a package.

  According to the present invention, the increase and decrease in fiber bundle tension immediately before winding can be appropriately mitigated, and fluctuations in the yarn width can be suppressed and stable winding can be performed in a desirable wide and thin uniform form. Become. As a result, it is possible to form a reinforcing fiber bundle having a preferable form as a raw material for the prepreg in the form of a package.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a winding unit of a winding machine provided with a traverse guide device for a winding machine according to an embodiment of the present invention, and a state in which a fiber bundle is wound into a package form. Show. In the figure, 1 indicates a winder, and 2 indicates a traverse guide device for a winder, particularly a plurality of guide members therein. In this embodiment, the fiber bundle 3 is formed of a flat tape-like carbon fiber bundle as described above, and guide members 4 and 5 for guiding the fiber bundle 3 in order from the upstream side in the running direction of the fiber bundle 3. , 6, 7, 8, and 9 are provided. Each guide member is constituted by a free rotating roller. These guide members 4, 5, 6, 7, and 8 are reciprocated with a predetermined width in the traverse direction of FIG. 2 via a traverse guide mechanism (not shown) (in this embodiment, the guide member 9 is Since it is composed of a long winder pressure roller, the guide member 9 is not reciprocated). The traverse is performed with respect to the traverse fulcrum located in the upper part of FIG. 2, and the fiber bundle 3 is wound as a carbon fiber bundle package 11 on a winding bobbin 10 made of a paper tube or the like.

  Among the plurality of guide members, the three guide members 7, 8, 9 on the most downstream side in the traveling direction of the fiber bundle 3 are arranged in parallel to each other, and the middle (second) guide member 8 is among them. Is constituted by the floatingly supported guide member 8 (free rotating roller supported by floating) in the present invention. In this embodiment, the floating support is performed by the spring 12, for example, by supporting both end bearing portions of the free rotating roller constituting the guide member 8 with the spring 12 as the floating support means. As shown in FIG. 1, the direction of the floating support is set in a direction in which the guide member 8 can relax the increase / decrease in the tension of the fiber bundle 3, and the guide member 8 is in this direction according to the tension fluctuation of the fiber bundle 3. As a result, the fluctuation in tension of the fiber bundle 3 is absorbed, and the increase or decrease in tension is alleviated. By using each guide member, especially the guide member 8 that is supported in a floating manner, as a free rotating roller, fluctuations in tension are absorbed more easily and smoothly, and the increase or decrease in tension is alleviated. Further, by arranging the three guide members 7, 8, 9 having the guide member 8 supported in a floating manner in the middle in parallel with each other, even when the guide member 8 is displaced, the running flat tape-like fiber The direction and posture of the bundle 3 are maintained substantially as they are, and no twist is applied to this portion. Therefore, this portion has an optimum configuration for guiding and winding the reinforcing fiber bundle in which a non-twisted state is desired.

  Further, in this embodiment, as described above, the winder pressure that is brought into pressure contact with the package 11 as the guide member 9 located on the most downstream side in the traveling direction of the fiber bundle 3 among the three guide members 7, 8, 9. Although a roller is used, these three guide members 7, 8, and 9 can be arranged on the more upstream side, and in that case, it is not necessary to use a winder pressure roller.

  In this embodiment, the guide member 6 disposed on the upstream side in the traveling direction of the fiber bundle 3 of the guide member 7 is set in a direction extending obliquely with respect to the guide member 7, and further the guide member 5 on the upstream side. 4 are set in a direction parallel to each other and extending obliquely with respect to the guide member 6, and the three guide members 7, 8, 9 and the guide members 4, 5 are orthogonal to each other in a direction different by 90 degrees. Set in the direction). The three guide members 7, 8, 9 arranged in parallel to each other include a winder pressure roller 9, and these guide members 7, 8, 9 are a winding shaft (rotating shaft of the bobbin 10) and They are arranged in parallel.

  In the winder 1 provided with the above-described traverse guide device 2 for winder, the guide member 8 that is supported in a floating manner is displaced in a direction that relaxes the increase and decrease of the tension according to the tension fluctuation of the fiber bundle 3. By doing so, the tension is stably maintained at a uniform tension, whereby the yarn width of the fiber bundle 3 is stably maintained at a uniform width. Therefore, the carbon fiber bundle 3 wound around the package 11 while being maintained in such a state is maintained in a desirable form as a raw material such as a flat tape-like prepreg, and the carbon fiber bundle 3 for resin reinforcement in a desirable form, The package 11 will be provided.

  In the above embodiment, the fiber bundle 3 is a flat tape-like carbon fiber bundle. However, the fiber bundle 3 is not limited to a carbon fiber bundle, and may be another reinforcing fiber bundle (for example, a glass fiber bundle). Not only a fiber bundle but other normal fiber bundles may be used.

  The present invention is particularly applicable to any fiber bundle winder that is required to stably wind a flat tape-shaped fiber bundle without causing fluctuations in the yarn width, and particularly to reinforce a carbon fiber bundle or the like. It is suitable for application to winding a fiber bundle.

It is a schematic side view of the winding part of the winder provided with the traverse guide device for winders according to an embodiment of the present invention. It is a schematic front view of the apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Winding machine 2 Traverse guide apparatus for winding machines 3 Fiber bundle (flat tape-shaped carbon fiber bundle)
4, 5, 6, 7 Guide member 8 Floating supported guide member 9 Guide member (winder pressure roller)
10 Winding bobbin 11 Carbon fiber bundle package 12 Spring as floating support means

Claims (10)

  A guide device for traversing when winding a fiber bundle around a bobbin, wherein at least one of a plurality of guide members for guiding the fiber bundle is supported in a floating manner, and the guide member is a fiber bundle accompanying the traverse. A traverse guide device for a winding machine, wherein the traverse guide device is configured to be able to be displaced in a direction in which an increase or decrease in tension is relaxed.   The traverse guide device for a winder according to claim 1, wherein the fiber bundle is a flat tape-shaped fiber bundle.   The traverse guide device for a winder according to claim 1 or 2, wherein the fiber bundle is a reinforcing fiber bundle for resin reinforcement.   The traverse guide device for a winder according to any one of claims 1 to 3, wherein the floating support is performed by a spring.   The traverse guide device for a winder according to any one of claims 1 to 4, wherein the guide member for guiding the fiber bundle is a free rotating roller.   The plurality of guide members are arranged in parallel to each other, and have three guide members for guiding the fiber bundle in order, and the guide member for guiding the fiber bundle is floatingly supported second. A traverse guide device for a winder according to any one of the above.   The traverse guide device for a winder according to claim 6, wherein the three guide members for guiding the fiber bundle in the order include a winder pressure roller.   A winder including the traverse guide device for a winder according to any one of claims 1 to 7.   The manufacturing method of the carbon fiber bundle package which winds up a carbon fiber bundle with the winding machine of Claim 8.   The method for producing a carbon fiber bundle package according to claim 9, wherein the carbon fiber bundle is substantially untwisted.

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