JPS58212916A - Manufacture of fiber reinforced resin circular board - Google Patents

Abstract

PURPOSE:To obtain the titled high strength product containing uniformly distributed reinforcement and having uniform strength and a large content of reinforcement by a method wherein strip-form reinforcement and molding material are supplied in turn to be laminated into the circular space of a bottom force with a specified shape and pressed by a top force. CONSTITUTION:For example, strip-form reinforcement (such as glass-chopped strand) is supplied from the strip-form reinforcement supplier 10 into the above- mentioned circular space 4 of a bottom force 1 where the core bar 3 is provided vertically concentrically about the one end closed cylinder 2 to form the circular space 4 and then thermosetting resin 141 (such as a hardener mixed unsaturated polyester resin etc.) and filler 141' (such as silica sand etc.) are supplied from the molding material supplier 13, 13'. These operations are repeated in turn to supply a necessary amount into the circular space 4, then a top force 15 is inserted into the bottom force 1, pressed, and the material in the space is hardened to obtain the intended product.

Description

[Detailed description of the invention] Conventionally, a flange made of fiber reinforced rice 11tt (hereinafter referred to as FRP
As a method for manufacturing single-stripe sheets such as Fufunji (made by Fufunji), a method has been proposed in which reinforcing materials such as glass mats and glass cloth cut into a predetermined shape are layered with thermosetting resin in a mold and then press-formed. has been done. [, Kaji, E distribution method allows the content of reinforcing material to be higher than 30%, but it has the disadvantage that it takes a very long time to cut the reinforcing material such as glass cloak (my father used cloth). .

My father found that when cutting, there was cutting loss, which resulted in wasted reinforcing material, which increased the cost of the product.

The present invention takes into account the drawbacks of oblique tops, and allows the use of reinforcing materials without waste, making it easy! The purpose of this method is to provide a method for manufacturing an annular plate with excellent AV: quality, and its gist is that six rods are erected concentrically in the center of a cylindrical body with one end closed. A short reinforcing material and a molding material are alternately supplied and layered into the annular space of a lower molding mold having an annular space provided therein, and then an upper molding mold having a predetermined shape is placed in the lower molding mold. The present invention relates to a method for producing an annular plate made of fiber-reinforced resin, characterized by fitting and pressing the annular plate.

The short reinforcing material used in the present invention may be any short reinforcing material, such as glass fiber, carbon fiber, synthetic fiber, etc. Pudostrands are preferably used. The length of the lampshade reinforcing material is 1j. From the viewpoint of formability, it is best not to exceed the width of the annular space of the lower mold for molding, which will be described later, and from the viewpoint of reinforcing effect, the length should not be less than 5K.
It is better to do so.

In addition, the molding materials used in the present invention include, for example, thermosetting resins such as unsaturated polyester resins, epoxy resins, phenol resins, and vinyl ester resins; An example of a method for filling a balloon or the like will be described with reference to the drawings.

FIGS. 1 and 2 are partially cutaway vertical sectional views showing the steps of the present invention.

It is a lower mold for IVi molding, and one end is closed and it is concentrically installed and fixed at the center of the nine cylindrical body 2 *8s3
It is made up of. The 8 rod 3Vc is provided with a large diameter portion 31, a tapered portion 32, and a small diameter portion 33. An annular space 4 with one end open is formed in the eight rods 3.

5#i It is an annular body for demolding, and its outer diameter is approximately equal to or slightly smaller than the inner diameter of the cylindrical body 2, and its inner diameter is approximately equal to or slightly larger than the outer diameter of the large diameter portion 31 of the 8 rod 3. ing.

6.7V'i This is a bottle hole for providing a bolt hole described later, and a plurality of holes with the same circumference -hK are provided at the bottom of the annular body 5 and the cylindrical body 2.

8#'i This is a fixing member for placing the lower mold l for molding, and is fixed to the rotating shaft 9 and provided so as to be freely rotatable.

IO is a short reinforcing material feeding machine that supplies the short reinforcing material 11, and the short reinforcing material 11ij is fed through long fibers (for example, glass roving) 12, and is cut into a cutting machine installed in the body. (not shown) and cut into short pieces.

13 and 13' are molding material supply machines for supplying the molding material 14, for example, thermosetting resin 141 is supplied from the molding material supply machine 13, and filler 141 such as silica sand is supplied from the molding material supply machine 13'. ' is supplied.

Short reinforcing material supply machine lO and molding material supply +fi13.
13' It is fixedly provided at the upper part of the ViQl-shaped space 4. The mold for 15t-1 molding is a circle having a large diameter part 151 that touches the end of the cylindrical body 2 of the lower mold l for the acid mold and a small diameter g1≦152 that fits between the inner circumference of the cylindrical body 2. It is plate-shaped,
A hole equal to lf is provided in the outer diameter of the small diameter portion 33 of the central portion Ktj core rod 3. 16 is a bottle hole into which a bottle 18 is driven to form a bolt hole, and L&! , are provided on the same circumference in alignment with the lower mold l and the bottle hole 6.7 provided in the annular body 5.

(inside the annular space 4 of the lower mold l rotating at a constant speed)
A predetermined amount of short reinforcing strands (glass short strands) 11 is supplied from the C short sleeve gL4A supplying machine IO. Next&
ff Thermosetting resin 1 from molding material feeder 13, 13'
41 (unsaturated polyester resin blended with a curing agent) and photojA agent 141' (after supplying the required amount into the silicon-like position 4,
The lower mold 1 for molding is removed from the fixing member 8, and the upper mold 15 is fitted to the lower mold IK as shown in FIG.
The end of the large diameter part 151 of the cylinder body 2 of the lower mold 1 is
Suppress at the end. Next, the bottle 18 is driven into the bottle holes 16, 6.7 for forming bolt holes, and after hardening, the bottle 18 is pulled out, the pole 17 is removed, the upper mold 15 for molding is removed, and the annular body 5 is used. The lower molding die 1 is removed from the mold to produce a fiber-reinforced resin annular plate having a groove 19 in the inner circumferential direction as shown in FIG.

In the above embodiment, the lower mold l is rotated so that the short reinforcing fibers 11 and the molding material 14) are continuously connected from the feeders 10, 13 and 13' which are fixed in position. However, without rotating the mold l, the feeders 10, 13, and 13' were installed in an annular empty fell.
It is also possible to supply the short reinforcing material and the molding material to the transformer while rotating the upper part of the transformer.

Also, the shape and size of the core 44!3 are based on the inner circumference w1 of the annular plate)
You can use the law as appropriate depending on the situation, for example, Chi j part 1
If 9 is unnecessary, the taper part 32Vi of the 6-bar 3 may not be provided, and if the annular body 5 for demolding is not used, the large diameter portion 31 of the 6-bar may not be provided. .

Father, in the present invention, it is not necessarily necessary to provide bolt holes in the annular plate, and it is possible to apply it to the manufacture of annular plates that do not require bolt holes.In this case, it is possible to form bolt holes in the E-type and lower mold for forming. There is no need to provide a pin hole for
Also, there is no need for a bottle.

The manufacturing method for J and L-shaped plates made of fiber-reinforced resin is as described above, and the short reinforcing material and the molding material H are alternately fed into the mold, so that the reinforcing material is uniformly distributed. The material is distributed and has uniform strength, and since the supplied reinforcing material and molding material H are molded by simply pressing, fluidity is not required, and the content of the reinforcing material is very high.
An annular plate of i is obtained.

Furthermore, since a mold with a simple structure is sufficient, there is an advantage that equipment costs are low.

[Brief explanation of drawings]

Figures 1 and 2 show the steps of the unexploded method -1...
, lower mold for molding, 2... cylindrical body, 3... 6 rods, 11.
... Short reinforcing material, 14... Molding material, 15... Molding mold. Patent applicant: Sekisui Chemical Co., Ltd. Representative Moto Fujinuma Toshio E Okayama Building Blocks Co., Ltd. Representative Toshio Yamaguchi

Claims (1)

[Claims] l In the annular space of an F-shaped molding machine, which has an annular space formed by erecting six rods concentrically in the center of a cylindrical body with one end closed, short reinforcing materials and molding material are alternately placed. A method for producing an annular plate made of fiber-reinforced resin, which comprises supplying and layering the plates, and then fitting a molding mold having a predetermined shape into a lower mold to form a mold under pressure.