JPH02184414A - Molding of composite material - Google Patents

Abstract

PURPOSE:To enable outline cutting to be easily performed by making specific jigs and tools unnecessary by a method wherein semihardened fiber reinforced plastics are laminated on a mold surface, an excess thickness of the laminated material is cut by moving an edge face of an edge tool along a different level side face, a stiffening plate being in contact with the different level side face and having a contact surface along an outer edge side surface of the laminated material is installed, and said shape is hardened by pressurizing and heating. CONSTITUTION:Laminated materials 16 are piled on upper surfaces, opposed side surfaces, and lower surfaces of opposed mandrels 11, 11. In that case, an edge part of the laminated materials 16 is protruded from a side wall 13 of a groove 12. Tools of a cutter knife 17 or the like are moved along the side wall 13, and the edge part of the laminated materials 16 protruded from the side wall 10 are cut. Then an edge forming parts 14 are fit in the groove part 12. Thereafter, cowl plates 15, 15 are respectively set to the edge surface forming parts 14, 14 on the upper face side and the lower face side. Then, they are vacuum packed, and are hardened by pressurizing and heating with an autoclave to perform molding. In that case, flange edge face forming parts 14 are pushed onto the side wall 13 and a bottom wall by pressurizing, and position is performed by those surfaces.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a composite material forming method H'' in which fiber-reinforced plastics are laminated and cured by applying pressure and heating.

(Prior Art) Composite materials made of fiber-reinforced plastics are lightweight and have high strength, so they are widely used as structural members for aircraft. Conventionally, there have been multiple methods for forming this composite material. The uncured composite H material is loaded into the mold -L formed to match the shape of the i-shrine, and the material is vacuum-back molded.
A method of heat curing in an autoclave is known.

(Problem to be solved by the invention) By the way, in the conventional molding method 1 (joint) described in "-", after molding, a router bit (for example, JP-A-57-1
07718) to cut the outer shape of the cured molded product with the excess thickness A/J shape. For this reason, special tools such as routers and tracing molds are required, and l
'There was a problem in that the number of man-hours required for JJ increased.

In addition, there were problems in that dust harmful to the human body was generated, and there was also the possibility of problems such as delamination.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a method for forming a composite material, which allows easy cutting of the outer shape without requiring special jigs and tools.

(L stage for solving the problem) The present invention has been made to solve the above problem, and the present invention is made by laminating fiber-reinforced plastic on the mold surface and curing it by pressurizing and heating. In the method, a mold having a stepped side surface cut out from the mold surface along the outer edge side of a molded product to be molded is prepared, and a semi-hardened fiber reinforced plastic is applied to the mold surface. Laminate the layers, move the blade surface of the knife along the stepped side surface, cut the excess thickness of the layered product, and then cut the excess thickness on the stepped side surface! A contact plate is attached to the laminate and angles the abutment IIIJ along the outer edge side 1J of the laminate, and is cured by applying pressure and heating 7.

Further, the stepped side surface is a side surface of a groove formed in the mold surface, and the contact plate is adapted to engage with the groove.

(Function) The present invention provides a composite material molding method in which i-fiber-reinforced plastic is laminated on a mold surface and cured by applying pressure and heating. <f>
A semi-hardened fiber-reinforced plastic is laminated on the mold surface, and the J plane of the cutter is moved along the stepped side surface to cut the excess thickness of the laminate and abut against the stepped side surface. , and a contact plate is attached to the abutting surface along the outer edge side of the laminate and cured by applying pressure and heating, and the step side is the side surface of the groove formed on the mold surface. because there is,
The flexible laminate can be cut into pieces using a common tool such as a utility knife. In addition, since the blade can be guided by the side surface of stage J2, the human influence during cutting work can be reduced (Jl), and the cutting viscosity can be improved.
Not only can it be cooled, but it can also be easily worked on. In addition, since the end face is formed using a backing plate,
It is possible to improve the quality of the end face of the molded product.

This eliminates the need for cutting after curing.
Therefore, the jigs and tools of the router 1 model 9 and the equipment for dust treatment can be made unnecessary.

(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 7.

FIGS. 1 to 4 show a molding method using a ■ cross-section wing ossicle mold.

Reference numerals 11 and 11 in the figure indicate a pair of mandrels (mold bodies) each having a substantially rectangular cross section. This mandrel 11.1
Each of the upper and lower ends of 1 is filled with 12.12 mm.
, 12.12 are formed, and the inner side wall 13 of this groove 12 is formed at the outer edge of the laminate to be molded. Flange end face forming parts 14 14 14 1.4 are fitted into these four grooves, respectively, protruding from the top and bottom surfaces.

Also, disposed on the upper and lower flange end face forming parts 14.14 of the mandrel 11 at a predetermined distance from the mandrel are cowl plates ti5, 1.5 for forming the flange outer surface.

In order to perform molding using such a mold, first, as shown in FIG. 1, opposing mandrels 1].

]] Laminated body 16 is laminated on the upper surface, the opposing side surface, and the lower surface. At this time, the end of the laminate [6] protrudes from the side wall [3] of the groove 12.

Next, as shown in FIG.
．． 11 are set at a predetermined interval, and additional lamination is performed on the upper and lower surfaces of both mandrels. It should be noted that here, the number of additional layers to be stacked differs depending on the setting π1. Thereafter, a general tool such as a cutter knife 17 is moved along the side wall 13 to cut the end of the stacked body 16 protruding from the side wall 1B.

Next, as shown in FIG. 3, the end face molding part 4 is fitted into the groove 12. Note that in the steps shown in FIGS. 2 and 3, after cutting the four ends of the laminate 16,
4 end molded parts] 4° groove 12. Alternatively, after cutting one end of the laminate 6, the end face molded part] 4 is fitted to the iF;
Cutting and fitting may be repeated at three locations.

Next, install cowl brakes 1-15.15 on the top side,
Finish the end face on the bottom side and set it on part 14.14.

After that, perform a vacuum hack and pressurize in an autoclave.
Heat [7] to harden and mold. At this time, the flan end face forming part 14 is pressed against the side wall [3] and bottom wall [8] of the groove by pressure, and is positioned by these surfaces.

In the above embodiment, the inner side wall 3 of the groove 12 is formed at the outer edge of the molded product, and the cutter 17 is moved along the side wall 3 before curing to form the laminate. 6 is cut, so it is a flexible laminate]6
If you want to cut something, use a cutter knife 17
You can use common overrides such as In addition, since the material can be guided by the side wall 3, the human influence in the cutting operation P13 can be reduced by ()1,
It is possible to change the cutting viscosity and also to work on the container. In addition, some uncut edges and cuts caused by the inclination of the cutter 17 with respect to the side wall 13 are regulated by the flan end face molding parts, and are compensated for by resin flow due to heating during curing, and the quality after curing will not be affected. There aren't many.

Further, the cutting shape can be freely set within a range that can be followed by the cutting tool used, thus expanding the freedom of design.

For this reason, cutting work after curing is no longer necessary.
Therefore, it is possible to eliminate the need for jigs and tools such as a profiling mold for the router 3 and equipment such as dust treatment.

Furthermore, the work required after curing can be reduced.
The causes of defects can be reduced.

Next, other embodiments will be described.

FIG. 5 shows an example of application to the external shape of a plate-like part and the clear cut of the opening, in which a side wall 23 is cut into the upper surface 22 of the mandrel 21 by 1 inch from the upper surface 22 to the
, and a groove 24 or step portion 2 including this side wall 23
5 and end face molding parts 26° and 27 are engaged with each other. Then, along the side wall 23, a cutter knife 28', 1
'J is moved to cut the laminate 29.

FIG. 6 shows an example of application to a part having a C cross section, in which a "1" plate-shaped end face molded part 3 is used depending on the cutting shape. Also in this case, by moving the cutter 33 along the do surface of the mandrel 32, the laminate 3
Make the 4th cut.

FIG. 7 shows an example of providing extra thickness on the outer periphery of a numerical part.
indicates a part for end face molding. Then, the side wall 44 serving as the cutting surface is moved to 45 by the adjustment shim 43, and the cutter 46 etc. -Ctl cut.

〔Effect of the invention〕

As explained above], in the present invention, it is possible to cut the laminate in a flexible state into nine cuts, and therefore a general tool such as a cutter knife can be used. In addition, since the blade can be guided, the cutting tool I1
1 degree can be improved. From such a thing,
No cutting work required after curing. Therefore, the effect that extra jigs and tools and dust treatment etc. can be eliminated can be obtained.

4. IRI 'I' explanation of drawings Figures 1 to 4 are molding b using an I-section wing ossicle mold.
Fig. 5 is a sectional view showing an example of applying the present invention to cutting the outer shape and opening of a plate-shaped part, and Fig. 6 is an application of a part having a C cross section. An example is a small cross-sectional view, and FIG. 7 is a cross-sectional view showing an application example in which extra thickness is provided on the outer periphery of a plate-shaped component.

] Tomantrel, 12. N Iη, 13. Extended wall, ] 1 14 Flange end face forming parts, ] 5. Cowl plate, 16. Laminated body, ] 7. Cutter knife, 21.
・・Mandrel 25・・Step part, 26.27・・Parts for end face forming, 2
8. Cutter knife, 2 laminate, 31. End face forming part, 32. Mandrel, 3B. Cutter, 34.
・Laminated body, 41... Mandrel, 42. End face forming parts, 43. J, J straightening shim, 44. 45... Side wall, 46...
・Cutter

Claims (1)

[Claims] 1. In a composite material molding method in which fiber-reinforced plastic is laminated on a mold surface and cured by applying pressure and heating, a mold is placed on the mold surface along the outer edge side of the molded product to be molded. A mold having a stepped side surface cut down from the surface is prepared, semi-hardened fiber reinforced plastic is laminated on the mold surface, and the blade surface of the cutter is moved along the stepped side surface to remove the excess thickness of the laminate. A method for forming a composite material, comprising: cutting the composite material, attaching a contact plate having a contact surface that contacts the stepped side surface and along the outer edge side surface of the laminate, and curing by applying pressure and heating. 2. The method for molding a composite material according to claim 1, wherein the stepped side surface is a side surface of a groove formed in the mold surface, and the contact plate is engaged with the groove.