JP2004099226A - Creel device and yarn doubling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the need for retreating yarn packages from working positions when the yarn packages are exchanged and improve productivity. <P>SOLUTION: A creel device includes a frame on which two or more yarn packages are mounted and a direction change guide changing a running direction of extracted yarn so that the yarn extracted from the yarn packages is doubled in one direction. The direction change guide is disposed advanceably to the frame and is such constituted as to be arranged on the upstream side of a yarn group doubled in one direction and on both sides of the yarn group. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention manufactures a unidirectional prepreg by drawing out reinforcing fiber yarns from a number of packages wound with reinforcing fiber yarns such as carbon fibers, aligning them in a direction parallel to each other in a sheet form, and impregnating a resin. The present invention relates to a creel device suitable for such a case and a yarn aligning device provided with such a creel device.
[0002]
[Prior art]
The unidirectional prepreg used in the molding of FRP draws reinforcing fiber yarns from a number of packages around which reinforcing fiber yarns such as carbon fibers are wound, aligns them in one direction in parallel with each other in a sheet form, and impregnates the resin. Manufacture by doing. A creel device and a yarn aligning device are used for producing such a unidirectional prepreg.
[0003]
Now, as the creel device, a gantry on which a plurality of yarn packages are mounted is provided, and the plurality of yarn packages are formed in a step-like shape when viewed from the front and the plane, and adjacent yarn packages are arranged. However, for example, there has been known an apparatus which is mounted so as to overlap with each other by half. Such a creel device is arranged and used on the upstream side of a group of yarns aligned in one direction and on an extension of the group of yarns (for example, see Patent Document 1).
[0004]
[Patent Document 1]
However, such a conventional creel device needs to be arranged on the upstream side of the yarn group aligned in one direction and on the extension of the yarn group, and therefore, the yarn package is required. When replacing the creel, the creel device must be temporarily evacuated from the use position, and there is a problem that productivity is poor.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to solve the above-described problems of the above-described conventional creel device, and it is not necessary to retreat from a use position when replacing a yarn package, and it is possible to improve productivity, and It is an object of the present invention to provide a yarn drawing and aligning device provided with such a creel device.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention relates to a gantry on which a plurality of yarn packages are mounted, and the progress of the yarn to be drawn so that the yarn drawn from the yarn package is aligned in one direction. There is provided a creel device having a direction changing guide for changing a direction, and further comprising a direction changing guide provided so as to be able to advance to a gantry. The redirection guide preferably comprises a guide roll for the yarn to be drawn from the yarn package. In addition, the direction change guide may be advanced so as to be parallel to the yarn alignment direction, or may be advanced obliquely.
[0007]
The present invention also provides a yarn aligning device in which such a creel device is arranged on the upstream side of a group of yarns aligned in one direction and on one side or both sides of the yarn group. I will provide a.
[0008]
The creel device and the yarn aligning device of the present invention draw out reinforcing fiber yarns from a number of packages around which reinforcing fiber yarns such as carbon fibers are wound, and align the yarns in a direction parallel to each other and in a sheet shape, thereby forming a resin. It is suitable for producing a unidirectional prepreg by impregnation.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2, the creel device has a gantry 3 on which a plurality of thread packages 2 around which a thread 1 is wound are mounted obliquely inward. The gantry 3 is provided with a direction changing guide 5 having a guide roll 4 for the yarn 1 drawn from the yarn package 2. The direction changing guide 5 can be advanced to the gantry 3 so as to be oblique to the direction in which the yarns 1 are aligned. Such a creel device is arranged on the upstream side of the later-described yarn group 6 and on both sides of the yarn group 6.
[0010]
3 and 4, the direction changing guide 5 is attached to a stand 9 independent of the stand 3. A motor 12 is mounted on the gantry 9, and a drive wheel 10 and a driven wheel 11 connected to the motor 12 are mounted on the bottom, and the direction is changed as the gantry 3 travels on the rail 13. The guide 5 advances obliquely with respect to the direction in which the yarns 1 are aligned as shown in FIG.
[0011]
Referring again to FIG. 1, the yarn 1 pulled out from the yarn package 1 and aligned in one direction by the direction change guide 5 is aligned in pitch by a comb 7 to form a yarn group 6, and is conveyed to a transport roll 8. The height is made uniform, and it is conveyed to the next process.
[0012]
In this manner, the creel device having the direction changing guide for changing the traveling direction of the drawn-out yarn is provided so as to be able to advance to the gantry, and is disposed on the upstream side of the yarn group and on the side of the yarn group. By doing so, it is not necessary to temporarily retreat the creel device from the use position when exchanging the yarn package, and the productivity is improved.
[0013]
In the above description, the yarn package may be mounted on the gantry at equal intervals in the vertical direction, or may be mounted in a staggered manner. Also, the yarn package is mounted obliquely inward as shown in FIGS. 1 and 2, but mounting in such a posture is because the trajectory of the drawn-out yarn is less than that of the yarn package. The reason for this is to prevent the thread from falling off the shoulder or fuzzing at the time of pulling out by keeping the vertical line perpendicular to the package surface at the center in the axial direction within approximately ± 5 °.
[0014]
The direction changing guide can be advanced so as to be parallel to the direction in which the yarn 1 is aligned, as shown by a two-dot chain line in FIGS. However, in this case, depending on the type of the yarn 1 and the like, the yarn that particularly enters the comb 7 may be damaged or fuzzed. Therefore, as shown by the solid line in FIGS. 1 and 2, it is preferable that the yarn 1 is advanced obliquely to the alignment direction of the yarn 1 so that the yarn 1 is substantially parallel. At this time, it is preferable that the yarn 1 always lightly contact the teeth of the comb 7 because the yarn path is stabilized. Note that, when the diverting guide 5 is advanced obliquely, as shown in FIG. 1, it is preferable that the direction change guide 5 be configured to rotate the other end with one end on the side of the yarn group 6 as a fulcrum.
[0015]
The creel device can be arranged on the upstream side of the yarn group 6 and on any one side of the yarn group 6. The arrangement on one side or both sides may be selected according to the number of yarn packages that can be mounted on the creel device, the number of yarns required by the yarn group, and the like. Further, if the yarn packages are arranged on both sides and one of them is used and the other is used as an empty creel device to replace or prepare the yarn package, the productivity can be further improved.
[0016]
FIG. 5 shows a state in which a unidirectional prepreg is manufactured using the yarn aligning apparatus of the present invention. The pitch is adjusted by the comb 7 and the height is adjusted by the plurality of transport rolls 8. The yarn group 6 is passed through the introduction roll 15 after the sizing agent attached to the yarn 1 is softened by the heater 14. Then, the matrix resin is sandwiched from above and below by two release papers 16 coated with the matrix resin and preheated by the heater 17, and then the matrix resin on the release paper 16 is transferred to and impregnated into the thread group 6 by the impregnation roll 18. Thereafter, the release paper on the upper side is removed through the lead-out roll 19, and the obtained unidirectional prepreg is wound together with the release paper on the lower side to form a roll body 20.
[0017]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the creel apparatus which provided the direction change guide which changes the advancing direction of the yarn pulled out from a yarn package so that it can advance freely with respect to a gantry is the upstream side of the yarn group aligned in one direction. In addition, by arranging the creel device on the side of the yarn group, it is not necessary to temporarily retreat the creel device from the use position when replacing the yarn package, and the productivity can be greatly improved.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a creel device and a yarn aligning device according to an embodiment of the present invention.
FIG. 2 is a schematic plan view showing a main part of a creel device according to one embodiment of the present invention.
FIG. 3 is a schematic perspective view showing a main part of a creel device according to one embodiment of the present invention.
FIG. 4 is a schematic front view showing a main part of a creel device according to one embodiment of the present invention.
FIG. 5 is a schematic flow chart showing a state in which a unidirectional prepreg is manufactured using the creel device and the yarn aligning device of the present invention.
[Explanation of symbols]
1: yarn 2: yarn package 3: gantry 4: guide roll 5: direction changing guide 6: yarn group 7: comb 8: transport roll 9: gantry 10: drive wheel 11: driven wheel 12: motor 13: rail 14: Heater 15: Introducing roll 16: Release paper 17: Heater 18: Impregnating roll 19: Outgoing roll 20: Roll body of unidirectional prepreg

Claims (8)

A gantry on which a plurality of yarn packages are mounted, and a direction changing guide for changing the traveling direction of the yarn to be drawn, so that the yarn drawn from the yarn package is aligned in one direction, In addition, a creel device having a direction changing guide provided so as to be able to advance to the gantry. The creel device according to claim 1, wherein the diverting guide comprises a guide roll of yarn to be drawn from the yarn package. The creel device according to claim 1, wherein the direction changing guide is advanced so as to be parallel to the yarn alignment direction. The creel device according to claim 1, wherein the direction changing guide is advanced so as to be oblique to the yarn alignment direction. A yarn pulling arrangement in which the creel device according to any one of claims 1 to 4 is arranged on the upstream side of the yarn group aligned in one direction and on one side of the yarn group. apparatus. A yarn pulling and aligning device comprising the creel device according to any one of claims 1 to 4 arranged upstream of the yarn group aligned in one direction and on both sides of the yarn group. A method for producing a unidirectional prepreg, comprising a step of aligning reinforcing fiber yarns in a sheet shape in parallel with each other using the yarn aligning device according to claim 5. A unidirectional prepreg manufactured by the method of claim 7.

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