JPS649181B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for adhering FRP tape, and more particularly to a method and apparatus for automatically adhering FRP prepreg tape to a predetermined mold.

FRP prepreg tape (hereinafter referred to as FRP tape) is made by arranging carbon fibers, Kevlar fibers, glass fibers, etc. in a certain direction or forming a fabric, and impregnating this with a thermosetting resin. Recently, this type of FRP tape can be cut as appropriate, laminated in multiple layers into a predetermined mold, and then heated and pressed to obtain a laminate with good dimensional accuracy and excellent strength. For this reason, it has come to be widely used in various applications such as the bodies of automobiles and small ships, and as building materials.

Conventionally, the method for manufacturing such a laminate is to first cut a wrapped FRP tape with a protective sheet made of paper or plastic film attached to one side to a predetermined size, and then cut the cut FRP tape to a predetermined size.
A method has been adopted in which the tape is sequentially pressed against a predetermined mold using an adhesive roll.
In this case, the FRP tape is fed to the adhesive roll without cutting the protective sheet so that the protective sheet can be peeled off continuously, so when pasting the ends of the FRP tape, the FRP tape after cutting is stuck to the mold. will be done. For this reason, FRP after cutting
The tape must be removed from the mold again, especially
When the FRP tape is cut diagonally, the adhesion area becomes larger, which not only makes the work of removing it more troublesome, but also the underlying or adjacent FRP tape that has already been applied to the part of the predetermined mold. This resulted in peeling, which resulted in the problem of deteriorating the quality of the laminate.

Therefore, the present inventors developed the conventional FRP as described above.
In addition to overcoming all the problems of tape attachment work.
As a result of various studies to facilitate the automatic application of FRP tape, we have added an auxiliary roll to the application roll for pressing and adhering the cut FRP tape against the mold, and for separating the FRP tape after cutting. By arranging these auxiliary rolls so that they can come into contact with and separate from the adhering roll, when the cut portion of the FRP tape reaches the adhering roll, the auxiliary roll can be pressed against the adhering roll, and the process after cutting is done. FRP
The tape can be wrapped around the auxiliary roll while being separated from the FRP tape that is pressed and pasted to the mold, and the cut end of the FRP tape can be pressed and pasted with the pasting roll smoothly and reliably. It has been found that the above problems can be solved.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automatic FRP tape application method and apparatus that can automatically apply a continuous FRP tape to a predetermined mold while sequentially feeding and cutting the tape.

In order to achieve the above object, in the present invention, a protective sheet is attached to one side and wrapped.
Sequentially feed out the FRP tape, cut the FRP tape to a predetermined size without cutting the protective sheet, and transfer it to a pasting roll.The pasting roll separates the cut FRP tape from the protective sheet. In the automatic pasting method of FRP tape, which is pressed and pasted to a predetermined mold,
At the timing when the cut part of the FRP tape reaches the pasting roll, an auxiliary roll is brought into contact with the pasting roll, and the FRP tape after the cut part is wound around this pasting roll, and the cut end of the FRP tape by the pasting roll is After completing the pasting of the parts, rewind the protective sheet and stick all of the FRP tape wrapped around the auxiliary roll onto the protective sheet, then attach the cut end of the FRP tape pasted to the protective sheet to the pasting roll. It is characterized by being positioned at the adhesion position.

In the automatic pasting method described above, it is preferable to heat the auxiliary roll and set the adhesive force of the FRP tape to the auxiliary roll to be greater than the adhesive force of the FRP tape to the protective sheet.

Further, in the present invention, when carrying out the automatic pasting method, an FRP tape supply reel for winding the FRP tape with a protective sheet pasted on one side, a feed roll for reversibly feeding out the FRP tape, and a pressing a pair of rolls, a cutting device that cuts only the FRP tape to the specified size without cutting the protective sheet, a heater that heats the FRP tape, and a cutter that separates the cut FRP tape from the protective sheet and cuts it into the specified size. It consists of an adhesive roll that presses and adheres it to the mold, and a take-up roll that winds up and collects the protective sheet, and an auxiliary roll that wraps the FRP tape from the cut part on one side of the adhesive roll can be freely attached and detached. This can be achieved by arranging the

In this case, it is preferable to provide the auxiliary roll with a heating means.

It is also preferable to coat the surface of the auxiliary roll with a non-adhesive substance.

Furthermore, the auxiliary roll comes into contact with the adhesion roll at the timing when the cut part of the FRP tape arrives,
It is preferable that the FRP tape wound around the auxiliary roll is then completely rewound and pasted onto the protective sheet and then separated.

Next, the method for automatically pasting FRP tape according to the present invention will be described in detail below in relation to the apparatus that implements this method.

FIG. 1 is a schematic diagram showing the principle of an automatic pasting device that implements the method of the present invention. That is, the first
In the figure, reference numeral 10 indicates an FRP tape supply reel, and this reel 10 includes an FRP tape 12 with a protective sheet pasted on one side as described later.
is kept wrapped. Below this reel 10, an appropriate number of roll pairs consisting of a feed roll 14 and a pressing roll 16 for sequentially feeding out the FRP tape 12 are provided. Below these pairs of rolls, a cutting device 18, a heater 20, and a pasting roll 22 are sequentially arranged to cut the FRP tape 12 into a predetermined size while pasting it onto a mold 24 having a predetermined shape. Configure.

However, the FRP tape 12 used in this example is made of a prepreg tape made by arranging carbon fibers, Kevlar fibers, glass fibers, etc. in a certain direction or forming a fabric, and impregnating this with a thermosetting resin. A protective sheet 13 made of paper or plastic film is attached to one side of this tape (see FIG. 2). Therefore, in the present invention, the cutting device 18 is
For example, as shown in FIG. 2, a receiving plate 26 made of metal, synthetic resin, or rubber material is attached to the protective sheet 13
By holding the FRP tape with a cutting blade 28 on the FRP tape 12 side and advancing this cutting blade 28 to a predetermined position, the protective sheet 13 can be removed without cutting it.
The structure is such that only the FRP tape 12 can be cut at any angle.

Further, the heater 20 is provided as a means for heating the surface of the FRP tape 12 to increase its adhesive strength and to remove residual air inside. Therefore, the FRP tape 12 that has been given the required adhesive strength in this way is pressed and adhered to a predetermined mold 24 by the adhesive roll 22, but as described above, the protective sheet 13 is Since it is not cut, it is separated after passing through the adhesive roll 22 as shown in FIG. 3, and is appropriately wound on a winding roll 30 and collected. In this case, the winding roll 30
A weak rotational force is always applied in the winding direction of the protective sheet 13, and when the tension of the FRP tape 12 is strong, it rotates in the reverse direction, and when the tension is weak, it rotates in the forward direction.
The configuration is such that the FRP tape 12 does not loosen.

Therefore, in the present invention, an auxiliary roll 32 is provided on the side opposite to the position of the take-up roll 30 provided for winding up and recovering the protective sheet 13 with respect to the pasting roll 22. (See Figure 3). Therefore, this auxiliary roll 32
By contacting the adhesive roll 22 at the timing when the cut portion of the FRP tape 12 reaches the adhesive roll 22, the FRP tape after the cut portion is separated from the FRP tape that is pressed against the mold 24 and pasted. Configure to wrap around. In this case, the auxiliary roll 32 may have a surface temperature ranging from normal temperature to
By maintaining the temperature at 90°C, the adhesive strength of the FRP tape 12 to the auxiliary roll 32 is reduced to the protective sheet 13.
The adhesive force can be made larger than that of the auxiliary roll 32, and the wrapping of the FRP tape 12 around the auxiliary roll 32 can be ensured. Note that the higher the temperature of the auxiliary roll 32 is, the greater the adhesive force to the FRP tape 12 can be. However, on the other hand, the thermal curing reaction of the FRP tape progresses, causing quality problems, so it is not recommended to set the temperature too high. It is not desirable to do so. In addition, the surface of the auxiliary roll 32 is made of a non-adhesive material made of fluorine-based silicone rubber such as tetrafluoroethylene or polychlorinated fluoroethylene (PCTFE) to prevent the thermosetting resin constituting the FRP tape 12 from adhering. Coating is preferable.

As shown in Fig. 1, the automatic FRP tape pasting device having the above-mentioned configuration is connected to a predetermined drive device (not shown), and is connected to the X-axis, Y-axis, Z-axis, and each of these axes. The a-axis, which performs the rotation around the b
Simultaneous control of 6 axes consisting of the axis and c-axis is performed to produce FRP.
By pasting the tapes 12 on a predetermined mold 24 in rows and columns without gaps, a laminate of several to several dozen layers can be constructed. Therefore, control of this automatic pasting device can be realized programmably using known NC control.

Next, a method for automatically pasting an FRP tape using the automatic FRP tape pasting apparatus having the above-described configuration will be explained.

First, a protective sheet 13 was pasted on one side.
The FRP tape 12 is sequentially fed out from the supply reel 10 under the action of the feed roll 14, and is cut by the cutting device 18 into dimensions preset according to a predetermined mold 24. At this time, the protective sheet 13
is transferred to the adhesive roll 22 together with the FRP tape 12 without being cut. Adhesive roll 22
The cut FRP tape 12 is pasted onto a predetermined mold 24 from end to end while being pressed. In this case, for example, as shown in FIG. 4, FRP is applied to the pasting roll 22.
At the timing when the cutting part A of the tape arrives, the auxiliary roll 32 is moved to one side B of the pasting roll 22.
If the auxiliary roll 32 is rotated in synchronization with the adhesion roll 22, the FRP tape 12b after the cut portion A can be peeled off from the protective sheet 13 and wrapped around the auxiliary roll 32. Therefore, the end of the FRP tape 12a pressed and pasted onto the mold 24 with the pasting roll 22 is always cut at the cut portion A.
It can be processed separately from the subsequent FRP tape 12b. In addition, after passing through the pasting roll 22
The protective sheet 13 separated from the FRP tape 12 is continuously wound up by a winding roll 30 (see FIG. 3).

In this way, the FRP is attached by the adhesive roll 22.
When the pressing and pasting of the cut end of the tape 12 is completed, the drive of the feed roll 14 is temporarily stopped, and then the feed roll 14 is driven in the reverse direction. As a result, the FRP tape 12 after the cut portion wound around the auxiliary roll 32 is attached to the protective sheet 13 again. Therefore, it was wound around the auxiliary roll 32.
When all the FRP tapes 12 are adhered to the protective sheet 13, the reverse rotation of the feed roll 14 is stopped, and the auxiliary roll 32 is separated from the application roll 22. Then feed roll 14 again
By driving the FRP tape 12 in normal rotation to position the cut end of the FRP tape 12 at the lower end of the sticking roll 22, preparations for sticking the FRP tape 12 at the next position are completed.

By repeating the above basic operations and sequentially setting the adhesion positions of the FRP tapes 12 by NC control as described above, a laminate having a predetermined shape can be constructed. The laminate thus obtained can be made into a product by heating and curing it under pressure.

As is clear from the above-mentioned embodiments, according to the present invention, it is possible to reliably and quickly perform the work of pasting FRP tapes, particularly the work of pasting the cut ends of continuously fed FRP tapes. As a result, the quality of the laminate can be stabilized. In addition, as well as ensuring reliable pasting of the cut ends, preparation for pasting the FRP tape when moving to the next pasting position is also speeded up, improving the performance of the automatic pasting device. Coupled with the stabilization of quality, it is possible to easily reduce manufacturing costs.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the automatic attachment of FRP tapes described above, but can be immediately applied to automatic attachment means for various double-sided adhesive tapes.
It goes without saying that various other design changes can be made without departing from the spirit of the invention.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram showing the basic principle of an apparatus for carrying out the automatic FRP tape pasting method according to the present invention, and Fig. 2 is a side view showing an embodiment of the FRP tape cutting apparatus shown in Fig. 1. Figures 3 and 3 are configuration diagrams showing the positional relationships of the constituent members constituting the device of the present invention, and Figure 4 is an explanatory diagram of the state of adhesion when the cut ends of the FRP tape are pasted by the device of the present invention. be. 10...FRP tape supply reel, 12...
FRP tape, 13...protective sheet, 14...feed roll, 16...pressing roll, 18...
Cutting device, 20... heater, 22... sticking roll, 24... mold, 26... receiving plate, 28... cutting blade, 30... winding roll, 32... auxiliary roll.

Claims (1)

[Claims] 1. A protective sheet is attached to one side and wrapped.
Sequentially feed out the FRP tape, cut the FRP tape to a predetermined size without cutting the protective sheet, and transfer it to a pasting roll.The pasting roll separates the cut FRP tape from the protective sheet. In the automatic pasting method of FRP tape, which is pressed and pasted to a predetermined mold,
At the timing when the cut part of the FRP tape reaches the pasting roll, an auxiliary roll is brought into contact with the pasting roll, and the FRP tape after the cut part is wrapped around this auxiliary roll, and the cut end of the FRP tape by the pasting roll is After completing the pasting, the protective sheet is rewound and all of the FRP tape wrapped around the auxiliary roll is pasted onto the protective sheet, and then the cut end of the FRP tape pasted on the protective sheet is wrapped around the pasting roll. An automatic method for pasting FRP tape, which is characterized by positioning the tape at the pasting position. 2. The automatic pasting method for FRP tape according to claim 1, which comprises heating the auxiliary roll to set the adhesive strength of the FRP tape to the auxiliary roll to be greater than the adhesive strength of the FRP tape to the protective sheet. 3 An FRP tape supply reel wrapped with FRP tape with a protective sheet attached to one side, and the FRP
A pair of rolls consisting of a feed roll and a pressing roll that feed the tape reversibly, a cutting device that cuts only the FRP tape to a predetermined size without cutting the protective sheet, a heater that heats the FRP tape, and a It consists of an adhesive roll that presses and adheres the FRP tape to a predetermined mold while separating it from the protective sheet, and a take-up roll that winds up and collects the protective sheet. An automatic FRP tape pasting device characterized by an auxiliary roll for wrapping the tape that can be freely approached and separated. 4. In the automatic pasting device according to claim 3, the auxiliary roll is provided with heating means.
Automatic pasting device for FRP tape. 5. The automatic pasting device for FRP tape according to claim 3 or 4, wherein the surface of the auxiliary roll is coated with a non-adhesive substance. 6. In the automatic pasting device according to any one of claims 3 to 5, the auxiliary roll is
Automatic application of FRP tape that is configured to contact the application roll at the timing when the cutting part of the FRP tape arrives, and then separate the FRP tape wound around the auxiliary roll after unwinding and pasting it on the protective sheet. mounting device.