JPS6125519B2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an FRP tape cutting device,
In particular, the present invention relates to an automatic cutting device that cuts FRP prepreg tape into predetermined dimensions when automatically pasting the 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 has been cut as appropriate, laminated and pasted into a predetermined mold in multiple layers, and then heated and pressed to obtain a laminate with good dimensional accuracy and excellent strength. Because of the fact that
It has come to be widely used for various purposes 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, it is desirable to feed the FRP tape to the adhesive roll without cutting the protective sheet so that the protective sheet can be peeled off continuously. Also,
When cutting FRP tape, from the viewpoint of workability,
It is necessary to cut the FRP tape quickly and appropriately while it is being fed out, and it is also necessary to be able to arbitrarily change the cutting angle depending on the attachment position to a predetermined mold.

Therefore, as mentioned above, the present inventors developed an FRP
As a result of various studies in order to obtain a device that satisfies all the requirements for automatic tape cutting, we found that the receiving plate and the cutting blade are arranged facing each other with a predetermined distance apart, and the cutting blade is moved forward. When cutting FRP tape, an adjustment member is provided that can set the distance between the blade tip and the receiving plate to be slightly smaller than the thickness of the protective sheet, and the cutting blade is further connected to the required reciprocating drive device via a link mechanism. At the same time, by attaching a rotary drive device to the cutting blade, the cutting blade can be quickly reciprocated to a predetermined cutting position of the FRP tape being transported to cut only the FRP tape, and the cutting angle can be set arbitrarily. We have successfully developed an automatic cutting device that satisfies all of the above requirements.

Therefore, an object of the present invention is to cut an FRP tape with a protective sheet attached to one side while sequentially transporting the tape without cutting the protective sheet.
To provide an automatic FRP tape cutting device that can quickly cut only the FRP tape and can arbitrarily set the cutting angle.

In order to achieve the above object, in the present invention, a receiving plate is disposed on the protective sheet side of the FRP tape with a protective sheet pasted on one side, and a receiving plate is placed opposite to the receiving plate in a predetermined position with respect to the FRP tape. Cutting blades are arranged at intervals, an adjustment member is provided that can adjust the distance between the cutting blades and the receiving plate during cutting, and a reciprocating drive device for cutting the cutting blades and a cutting angle of the cutting blades are provided. It is characterized by being attached with a rotation drive device for setting.

In the automatic cutting device described above, the adjusting member includes a holder that holds the cutting blade, and a stopper that protrudes from a part of the holder in parallel with the cutting blade and comes into contact with the receiving plate. It is preferable to position the stopper so that the distance between the stopper and the receiving plate is slightly smaller than the thickness of the protective sheet.

Further, the reciprocating drive device can be configured such that a holder that holds the cutting blade is coupled to one end of a link mechanism, and this link mechanism is driven by a cylinder device. Alternatively, the reciprocating drive comprises:
The holder holding the cutting blade may be coupled to one end of a crank mechanism, and the crank mechanism may be driven by a rotary drive motor.

On the other hand, a rotary drive device is constructed by connecting a holder that holds a cutting blade to a reciprocating drive device via a rotatable connecting rod, and connecting the rotating shaft of a rotary drive motor to this connecting rod via a gear mechanism. It is suitable if

Further, it is preferable that the holder holding the cutting blade be pivotably attached to the reciprocating drive device.

Next, embodiments of the automatic cutting device for FRP tape according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 and FIG. 2 are schematic explanatory diagrams showing the basic principle of the device of the present invention and the basic configuration of one embodiment thereof. That is, in FIG. 1, reference numeral 10 is
This FRP tape 10 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 11 made of paper or plastic film is attached to the side surface of the tape. configured like this
In the present invention, as a device for cutting the FRP tape 10, first, a receiving plate 12 made of a metal material is placed in contact with the protective sheet 11, and the cutting blade 14 is placed on the receiving plate 12 at a predetermined distance from the FRP tape 10. Place it opposite. The receiving plate 12 is preferably a metal plate with a smooth surface, and it is particularly effective if the surface is plated with hard metal. In addition, receiving plate 1
2 is usually fixedly held in a predetermined position by a frame 16.

However, the cutting blade 14 is reciprocated by a reciprocating drive device to be described later, thereby cutting the FRP.
Cut the tape. In this case, the cutting edge of the cutting blade 14 is inserted a distance S from the adhesive surface of the protective sheet 11 attached to one side of the FRP tape 10 to a distance slightly inside the protective sheet 11, as shown by the broken line. The FRP tape 10 can be cut without cutting the protective sheet 11. The value of this distance S is the thickness of the protective sheet 11,
It is determined by the material of the receiving plate 12, and when the receiving plate 12 is made of a metal plate, S=0.01 to 0.1 mm. For example, when using the protective sheet 12 with a thickness of 0.1 mm, good cutting results were obtained when S=0.04 to 0.06 mm.

FIG. 2 is a mechanical explanatory diagram showing an embodiment of a reciprocating drive device for performing a suitable cutting operation of the cutting blade 14 described above. That is, in this embodiment, a toggle link mechanism 18 is used, and a piston rod 24 of a hydraulic or pneumatic cylinder device 22 is coupled to a driving point 20 of the toggle link mechanism 18. Further, one output end 26 of the pair of output ends 26 and 28 of the toggle link mechanism 18 is pivotally fixed to the frame 16 via an appropriate bracket,
The other output end 28 is connected to the cutting blade 1 via a link 30.
Connect with 4.

With this configuration, when the piston rod 24 is driven in the X direction under the action of the cylinder device 22 with respect to the toggle link mechanism 18, the driving point 20 of the toggle link mechanism 18 is moved to the horizontal position 20'.
During this period, the cutting blade 14 rapidly reciprocates in the Y direction and Y' direction, and the toggle link mechanism 1
By adjusting the moving distance of the cutting blade 14 based on the displacement of 8, automatic cutting of the FRP tape 10 can be smoothly achieved as shown in FIG. Furthermore, when cutting the next time, by driving the piston rod 24 in the X' direction, the same automatic cutting of the FRP tape 10 as described above can be achieved.

FIG. 3 is a mechanical explanatory diagram showing another embodiment of a reciprocating drive device for performing a suitable cutting operation of the cutting blade 14 described above. That is, in this embodiment, a crank mechanism 32 is used, and this crank mechanism 32 is coupled to a rotary drive motor 34, and its output end 36 is coupled to the cutting blade 14 via a link 30.

With this configuration, if the rotary drive motor 34 is driven once in the R direction, the cutting blade 14
The reciprocating motion in the Y direction and Y′ direction is performed quickly,
As in the previous embodiment, automatic cutting of the FRP tape 10 can be smoothly achieved.

Therefore, in the present invention, the above-mentioned cutting blade 1
The basic configuration is a reciprocating drive device that performs the cutting operation of 4, and an adjustment member for setting the appropriate cutting position of the cutting blade 14 with respect to the FRP tape 10 and the protective sheet 11, and an arbitrary cutting angle of the cutting blade 14. It is configured in combination with a rotary drive device that can be set. A specific example of the structure of the apparatus of the present invention is shown in FIGS. 4 and 5. That is, in this embodiment, the reciprocating drive mechanism is constructed by combining the toggle link mechanism and cylinder device shown in FIG. 2. In addition,
For convenience of explanation, the same reference numerals are given to the same components as those shown in FIGS. 1 and 2, and detailed explanation thereof will be omitted.

4 and 5, reference numeral 40 indicates a holder for holding the cutting blade 14, and the tip of the cutting blade 14 is placed at a predetermined position on both ends of the holder 40 against the FRP tape 10 and the protective sheet 11. Stoppers 42, 42 for positioning are provided protrudingly. Therefore, the tips of the stoppers 42, 42 are located closer to the protective sheet 11 than the tip of the cutting blade 14.
By projecting the protective sheet 11 by the amount obtained by subtracting the allowable cutting distance S of the protective sheet 11 from the thickness of the protective sheet 11, the protective sheet 11 can be prevented from being cut when the stoppers 36, 36 are in contact with the receiving plate 12.
The FRP tape 10 can be cut smoothly.

The holder 40 is a connecting rod 4 that is rotatably held.
4 through a hinge 46 so as to be swingable in the direction of the arrow F. The connecting rod 44 is surrounded and held by a first sleeve 48 that is integrated in the rotational direction and can slide in the axial direction, and further fixed against movement in the axial direction and held rotatably with respect to the first sleeve 48. 2. It is held on the frame 16 via a sleeve 50. Therefore, the holder 34
is rotatably supported in the direction of arrow E via a connecting rod 44 and a first sleeve 48. Therefore, as shown in FIG. 4, by connecting the drive shaft of the rotary drive motor 56 to the first sleeve 48 via a gear mechanism including a sector gear 52, a gear 54, etc., the rotary drive motor 56 can be rotated. Under the action, the cutting angle of the cutting blade 14 with respect to the FRP tape 10 can be arbitrarily set.

On the other hand, the other end of the connecting rod 44 has a bearing 58.
Connect the link 30 via. Therefore, if this link 30 is coupled to the piston rod 24 of the cylinder device 22 via the toggle link mechanism 18,
The cutting operation of the cutting blade 14 can be achieved in a manner similar to the mechanism shown in FIG.

As mentioned above, in this embodiment, in order to maintain the gap between the tip of the cutting blade 14 and the receiving plate 12 at an optimum value, the stoppers 42, 42 are provided protruding from the holder 40, but the toggle link mechanism 18 is not aligned in a straight line. When the gap becomes the minimum, the receiving plate 1 at this time becomes
The pressing force of the stoppers 42, 42 against the cylinder device 22 is infinite, so a very large force is generated. Therefore, if the abutting positions of the stoppers 42, 42 and the receiving plate 12 are incorrectly set, a large force will be applied to the frame 16, which may deform it. Therefore, it is preferable to provide a position-adjustable bracket 60 as a means for fixing the toggle link mechanism 18 to the frame 16 as a means for adjusting the abutment position between the stoppers 42 and the receiving plate 12. Furthermore, as a safety device against the generation of excessive pressing force, the bracket 60 is fixed to the frame 16 via an elastic member 62 such as a spring or a disc spring.
can be absorbed into.

Further, in this embodiment, since the holder 40 is swingably connected to the connecting rod 44, even if the receiving plate 12 is deformed, the cutting blade 1 is moved along this deformed surface.
4 comes into contact with each other without cutting the protective sheet 11.
The FRP tape 10 can be cut appropriately. As described above, it is preferable to use a metal plate as the receiving plate 12, but it is also possible to use a synthetic resin plate such as polyethylene (1 to 3 mm thick) or a rubber plate (2 to 5 mm thick). It is also possible to do so.
However, in this case, care must be taken because the setting of the gap between the cutting blade 14 and the receiving plate 12 is significantly different from that in the case of a metal plate.

As is clear from the above, the automatic cutting device for FRP tape according to the present invention continuously feeds out the FRP tape together with the protective sheet, and sequentially cuts and supplies the FRP tape into predetermined dimensions without cutting the protective sheet. Therefore, it can be suitably applied to an automatic pasting device that constitutes a laminate of FRP tapes. That is, FIG. 6 shows a schematic configuration diagram of an automatic pasting device, in which an FRP tape 10 with a protective sheet 11 pasted on one side is shown.
an FRP tape supply reel 70 for winding the above-mentioned
A roll pair consisting of a feed roll 72 that reversibly feeds out the FRP tape 10 and a pressing roll 74, an automatic cutting device 76 according to the present invention, a heater 78, and a cut FRP tape 10 are separated from the protective sheet 11. It consists of an adhesive roll 82 that presses and adheres the protective sheet 11 to a predetermined mold 80, and a take-up roll 84 that winds up and collects the protective sheet 11.
This is a combination of auxiliary rolls 86 on which the tape is wound, which can be freely approached and separated.

The automatic pasting device configured in this way is connected to a predetermined drive device (not shown), and is connected to the X-axis, Y-axis,
The FRP tape 10 is pasted vertically and horizontally on a predetermined mold 80 without any gaps by simultaneously controlling six axes consisting of the a-axis, the a-axis, the b-axis, and the c-axis that rotate around these axes, the Z-axis, and each of these axes. However, a laminate having several to several tens of layers can be constructed. Therefore, control of this automatic pasting device can be realized programmatically using known NC control.

Various preferred embodiments of the present invention have been described above, and the automatic cutting device for FRP tape according to the present invention not only speeds up the cutting operation and can arbitrarily select the cutting angle, but also cuts the protective sheet. Since the cutting position of the blade can also be adjusted, it is possible to improve cutting accuracy and cutting performance as an automatic cutting device for various FRP tapes.

Further, the present invention is not limited to the embodiments described above, and it goes without saying that various design changes can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing the basic principle of the automatic cutting device for FRP tape according to the present invention, FIG. 2 is a mechanical explanatory diagram showing an example of the basic configuration of the device of the present invention,
FIG. 3 is a mechanical explanatory diagram showing another embodiment of the basic configuration of the device of the present invention, and FIGS. 4 and 5 show specific examples of the configuration of the device of the present invention, and FIG. 4 is a side view;
FIG. 5 is a sectional view taken along the line -- in FIG. 4, and FIG. 6 is a schematic explanatory diagram of an automatic FRP tape pasting device showing an application example of the device of the present invention. 10...FRP tape, 11...protective sheet,
12... pedestal, 14... cutting blade, 16... frame, 18... toggle link mechanism, 20... driving point, 22... cylinder device, 24... piston rod, 26... output end, 28... Output end, 30...
... Link, 32 ... Crank mechanism, 34 ... Rotation drive motor, 36 ... Output end, 40 ... Holder,
42... Stopper, 44... Connection rod, 46... Hinge, 48... First sleeve, 50... Second sleeve, 52... Sector gear, 54... Gear, 56
... Rotary drive motor, 58 ... Bearing, 60
... Bracket, 62 ... Elastic member, 70 ...
FRP tape supply reel, 72... Feed roll, 74... Pressing roll, 76... Automatic cutting device, 78... Heater, 80... Mold, 82...
Pasting roll, 84... winding roll, 86... auxiliary roll.

Claims (1)

[Claims] 1. For an FRP tape with a protective sheet pasted on one side, a receiving plate is arranged on the protective sheet side, and a cutting blade is provided facing the receiving plate and spaced apart from the FRP tape by a predetermined distance. and an adjusting member made of an elastic member such as a disc spring or a spring that can adjust the distance between the cutting blade and the receiving plate during cutting, and a reciprocating drive device for cutting the cutting blade and a reciprocating drive device for the cutting blade. Continuously running FRP characterized by being equipped with a rotary drive device that sets the cutting angle
Automatic tape cutting device. 2. In the automatic cutting device according to claim 1, the adjustment member includes a holder that holds a cutting blade, and a stopper that is provided on a part of the holder to protrude in parallel with the cutting blade and comes into contact with a receiving plate. An automatic FRP tape cutting device that continuously travels, wherein the stopper is positioned so that the distance between the tip of the cutting blade and the receiving plate is slightly smaller than the thickness of the protective sheet. 3. In the automatic cutting device according to claim 1, the reciprocating drive device is configured such that a holder that holds a cutting blade is coupled to one end of a link mechanism, and this link mechanism is driven by a cylinder device. Automatic cutting device for FRP tape that runs continuously. 4. In the automatic cutting device according to claim 1, the reciprocating drive device is configured such that a holder for holding a cutting blade is coupled to one end of a crank mechanism, and the crank mechanism is driven by a rotary drive motor. Automatic cutting device for FRP tape that runs continuously. 5. In the automatic cutting device according to any one of claims 1 to 4, the rotary drive device connects the holder that holds the cutting blade to the reciprocating drive device via a rotatable connecting rod, This is an automatic FRP tape cutting device that runs continuously by connecting the rotating shaft of a rotary drive motor to this connecting rod via a gear mechanism. 6. In the automatic cutting device according to any one of claims 3 to 5, the holder holding the cutting blade is pivotally connected to the reciprocating drive device and moves continuously. Automatic cutting device for FRP tape.