JPH0784046B2 - Laminating equipment for prepreg - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prepreg laminating apparatus for laminating prepregs to form a prepreg laminated sheet.

[0002]

2. Description of the Related Art Composite materials are widely used for aircraft parts, machine structural parts and sports / leisure products. This composite material is formed by laminating prepreg impregnated with epoxy resin, etc. on reinforcing fibers such as carbon fiber, glass fiber, boron fiber, etc. to form a prepreg laminated sheet, and cutting this prepreg laminated sheet into a shape suitable for the product. Then, a prepreg laminated material is formed. Then, a product such as a composite material is manufactured by subjecting the prepreg laminated material to processing such as bending and then pressing and heating. The laminating method is roughly classified into a manual method and a machine automated method, but the laminating methods are almost the same.

The manual laminating method which is the basis of the laminating method will be described with reference to FIG. The prepreg 1 is usually spread on one side on a release paper 2 that has been impregnated with silicon, and the prepreg tape 3 composed of the release paper 2 and the prepreg 1 is wound around a core tube 4a and is used as a raw material for the prepreg. The roll 4 is formed (see FIGS. 5A and 5B). First, the prepreg tape 3 is pulled out from the prepreg raw roll 4 and cut into a predetermined size and shape. After that, the release paper 2 is peeled off from the prepreg tape 3 (see FIG. 5C), and the release paper 2 is peeled off. The prepreg 1 thus obtained is laminated on a laminate surface material 5 made of a plastic sheet or the like which is used as a substrate for lamination and is peeled off later. And
Further, a predetermined number of prepregs 1 are laminated on the prepreg 1 by changing the direction of the fibers (for example, 45 °, 90 °, etc.) (see FIG. 5 (d)), and the prepreg 1 is laminated on the laminated surface material 5. Form a laminated sheet. Then, the prepreg laminated sheet is cut into a predetermined shape without cutting the laminated surface material 5, and then the laminated surface material 5 is peeled from the prepreg laminated sheet to form the prepreg laminated material 6 (FIG. 5).
(See (e)). Then, the prepreg laminated material 6 is bent, pressed and heated to form a mold material 7 as shown in FIG.

As a device for laminating the prepreg 1, a device as shown in FIGS. 7 and 8 is known.

In this laminating apparatus 8, the prepreg raw fabric roll 4 is mounted on the unwinding portion 9, the prepreg tape 3 of the prepreg raw fabric roll 4 is laid over the idler roll 10 and the laminating roll 11, and the release paper 2 is peeled off. The prepreg 1 is spread on the laminated surface material 5, and the release paper 2 is wound around the winding unit 13 via the detachable feeding device 12. Then, at the time of stacking, the feeding device 12 is in a non-driving state, the release paper 2 is pulled by the winding portion 13, the stacking device 8 is moved to the left with respect to the stacking surface material 5, the prepreg tape 3 is pulled out, and the idler roll 10 moves. The detection device 14 near the downstream side detects the side position of the princess leg tape 3,
The servo motor 15 of the correction device 16 having the unwinding part 9, the idler roll 10 and the servo motor 15 is controlled by the control device 17 so that the side part of the prepreg tape 3 is at a fixed position with respect to the laminating roll 11, The unwinding portion 9 and the idler roll 10 of the correction device 16 are moved in a direction orthogonal to the running direction of the tape 3 to correct the tape. In this way, the prepreg tape 3 held at a fixed position with respect to the laminating roll 11 is pressed and spread on the laminating surface material 5 by the laminating roll 11 to laminate the prepreg 1 and the release paper 2 is taken up by the winding section 13. It has become.

[0006]

However, when laminating is performed by the laminating apparatus 8 described above, the prepreg original roll 4 is used.
As shown in FIG. 6, the winding shape may be shifted to, for example, a bamboo shoot state. Therefore, if stacking is performed in this state, as shown in FIG. The gap (s) between the prepreg 1 and the prepreg 1 becomes large and exceeds the allowable value of the gap (s) or overlaps with each other. Therefore, the correction device 16 performs the correction. However, since the correction device 16 is located at a position distant from the laminating roll 11, even if the correction device 16 makes a correction at the position of the laminating roll 11, the correction device 16 is displaced again to form a gap ( s) may occur and may not be completely corrected. Therefore, the defective prepreg 1 must be manually peeled off and manually re-laminated, and the prepreg 1 is highly adhesive and thus is difficult to peel off. However, once peeled off, there was a problem that the adhesive strength was lowered and the lamination strength of the prepreg laminated sheet was lowered.

In view of the above, the present invention has an object to provide a prepreg laminating apparatus in which the side portions of the prepreg tape can be always held at a constant position with respect to the laminating roll when laminating the prepregs. It was made as.

[0008]

To achieve the above object, in the present invention, a prepreg tape composed of a prepreg and a release paper is unwound from the unwinding portion, and the release paper is peeled off from the prepreg tape and wound up. In the laminating apparatus of the prepreg, which winds the prepreg separated from the release paper and presses the prepreg separated from the release paper while relatively moving the laminating roll provided in the laminating head with respect to the portion to be laminated, in the unwinding unit. A side position detecting device of the prepreg tape provided in the vicinity of the laminating roll between the laminating roll and a suction port for adsorbing the prepreg tape is formed in the peripheral surface in the vicinity of the side position detecting device and the axis line is formed. And a prepreg tape side position correction device having a suction roll movable in a direction, and a side position correction is performed by a signal from the side position detection device. It is characterized in that the device has to be held in a fixed position the sides of the prepreg tape with respect to laminating roll is moved in the axial direction.

[0009]

In the above apparatus, the side position position of the prepreg tape is detected by the side position detecting device of the prepreg tape provided near the laminating roll, and the prepreg tape is located near the side position detecting device and the laminating roll. A side position correcting device having a suction roll for sucking the tape moves and corrects the suction roll so that it is located at a fixed position with respect to the laminating roll. Therefore, the modified prefreg tape is
Since it is immediately pressed against the layered part by the laminating roll,
The prepregs adjacent to each other are laminated without a gap.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIGS. 1 to 4, omitting the same components as those of the prior art.

The laminating device 8 comprises a correction device 50 and a detection device 1.
4 and.

The correction device 50 is provided on the upstream side of the laminating roll 11, has a suction roll 19, a servomotor 15, and a vacuum pump or a suction pump 20.
Has a light projector 21, a light receiver 22 provided between the suction roll 19 and the laminating roll 11, and a control device 17.

As shown in FIGS. 3 and 4, the suction roll 19 has a pipe shaft 23, an inner drum 24 and an outer drum 25. One end of the pipe shaft 23 is blind, and the threaded portion 26 of the servomotor 15 is connected to the other end.
The pipe shaft 23 is provided with a plurality of suction ports 27 (five in this embodiment) in a line in the axial direction. The pipe shaft 23 is supported by support members 28, 28, and is moved only in the axial direction by the servomotor 15. Then, these supporting members 28 are fixed to a laminated attachment (not shown).

The inner drum 24 is provided on the outer side of the pipe shaft 23, and side plates 29 constituting the inner drum 24 are provided at both ends in the axial direction. Are combined. A rectangular opening 30 is formed on the peripheral surface of the inner drum 24 corresponding to the position where the outer drum 25 adsorbs the prepreg tape 3, and the outer drum 25 has a suction port 31 for adsorbing the prepreg tape 3. Open only the other suction port 3
By closing 1 the suction efficiency is improved.

The outer drum 25 is rotatably and closely fitted to the outer side of the inner drum 24, and has a large number of suction ports 31 formed on its peripheral surface. Then, side plates 32 forming the outer drum 25 are provided at both ends of the outer drum 25 in the axial direction, and outer rings of bearings 33 are mounted on these side plates 32. The inner rings of these bearings 33 are mounted on the pipe shaft 23.

Support members 28, 28 for the pipe shaft 23 are also provided.
As shown in FIG. 2, a plurality of holes 34 are formed in the circumferential direction in the approximate center, and a cavity 35 having a predetermined length in the axial direction is formed so as to surround the holes 34. The sleeve member 36 is fitted. Then, a pipe member 37 that connects the vacuum pump or the suction pump 20 is connected to the space 35. The light projector 21 of the detection device 14 uses a light emitting diode or a semiconductor laser as a light source, and the light receiver 22 uses a photodiode or a charge-coupled device. Further, the projector 21 and the light receiver 22 are provided so as to face each other so as to sandwich the prepreg tape 3 from the thickness direction in order to detect one position of the side portion of the prepreg tape 3, and the projector 21 and the light receiver 22 are provided. The control device 17 is electrically connected to the control device 17, and the control device 17 is electrically connected to the servo motor 15 and the vacuum pump or the suction pump 20.

Next, the operation of the prepreg laminating apparatus will be described.

First, the correction device 50 and the detection device 14 are turned on.
Set to N, then turn on the vacuum pump or suction pump 20.
Then, the prepreg tape 3 is run on the laminating roll 11. Then, the position of the side portion of the prepreg tape 3 is detected by the light projector 21 and the light receiver 22 of the detection device 14, and if this position is deviated from the predetermined position of the laminating roll 11, the servo motor 15 is operated. And the suction roll 19 is moved, and the prepreg tape 3 adsorbed to the suction roll 19 is moved to a position where the side part thereof coincides with the reference position of the laminating roll 11. Since the suction roll 19 is provided in the vicinity of the upstream side of the laminating roll 11, the side position of the prepreg tape 3 on the laminating roll 11 can be corrected quickly. Therefore, the prepreg 1 is laminated on the laminated surface material 5 without shifting.

[0019]

As described above, the prepreg laminating apparatus according to the present invention is provided with the side position detecting device for the prepreg tape in the vicinity of the laminating roll between the unwinding portion and the laminating roll. Since a prepreg tape side position correcting device having a suction roll formed on the peripheral surface for adsorbing the prepreg tape in the vicinity of is formed and movable in the axial direction, the prepreg tape corrected by the correcting device is provided. Is immediately corrected on the laminating roll and the lateral position of the prepreg tape on the laminating roll can always be kept accurate. Therefore, the prepregs that are adjacent to each other can be laminated with a constant gap. Since the movement of the side portion of the prepreg tape in the axial direction is performed while the prepreg tape is sucked by the suction roll, the laminated surface of the prepreg tape is not scratched and the adhesive strength is reduced. Nor. Moreover, since these are simple structures, they have an excellent effect that they operate accurately with few failures and can be made inexpensive.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view showing an embodiment of a prepreg laminating apparatus according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a vertical cross-sectional view of a suction roll.

FIG. 4 is a vertical sectional view taken along line AA of FIG.

FIG. 5 is a perspective view showing steps of a method of laminating prepregs.

FIG. 6 is a plan view showing a winding state and an unwinding state of a prepreg original fabric roll.

FIG. 7 is a side view of a conventional prepreg laminating apparatus.

FIG. 8 is a plan view of FIG.

[Explanation of symbols]

 8 Laminating Device 9 Unwinding Part 11 Laminating Roll 13 Winding Part 14 Detection Device 16 Correction Device 19 Suction Roll 21 Projector 22 Light Receiver 31 Suction Port 50 Correction Device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location C08J 5/24 7310-4F G05B 23/02 302 7531-3H // B29K 105: 06

Claims (1)

[Claims] 1. A prepreg tape composed of a prepreg and a release paper is unwound from an unwinding portion, the release paper is peeled off from the prepreg tape and wound in a winding portion, and the prepreg separated from the release paper is laminated head. In a prepreg laminating apparatus for laminating by pressing the laminating roll provided in the relative position with respect to the portion to be laminated, in a prepreg tape provided in the vicinity of the laminating roll between the unwinding portion and the laminating roll. A prepreg tape side position having a side position detecting device and a suction roll which is provided in the vicinity of the side position detecting device and is formed with a suction port for adsorbing the prepreg tape on the peripheral surface and is movable in the axial direction. And a prepreg for a laminating roll by moving the side position correcting device in the axial direction in response to a signal from the side position detecting device. Laminating device of the prepreg, characterized in that so as to hold the sides of the flop at a fixed position.