JPH04261832A - Manufacture of platelike formed object - Google Patents

Abstract

PURPOSE:To produce the platelike formed object which has the uniform distribution of specific gravity and large cross sectional size. CONSTITUTION:A plurality of fiber bundles G in which a number of long fibers (g) are bundled and arranged into a thin layer-shape, are continuously moved to an impregnation table 2, and in the movement, foamable and curable resin liquid is sprayed on each fiber bundle G from the spray nozzle 22 moved in reciprocation in width direction, and is stuck to the bundle. The fiber-bundle G to which resin liquid is stuck, is pressed and nipped by an impregnation plate 3, and is moved in reciprocation in width direction, whereby the fiber bundle G is impregnated with resin liquid. Then the fiber bundle impregnated with resin liquid is guided to a forming path 8, and a platelike formed object is produced by foaming and curing the resin liquid.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a plate-shaped molded article suitable for use as a building material.

0002

[Prior Art] Conventionally, reinforcing fiber materials such as glass fibers are impregnated with a foamed curable resin liquid, and the reinforcing fiber materials are arranged in a tapered shape with a tapered tip and continuously advanced into a molding path. The applicant has produced a plate-shaped molded body suitable for building materials by foaming and curing the resin liquid in the resin. First, the manufacturing apparatus for this plate-shaped molded body will be explained based on FIGS. 4 and 5.

When glass fiber bundles G are continuously pulled out from a large number of bobbins and are arranged in a thin and wide state, when a foaming hardening resin liquid such as polyurethane is jetted from the jetting machine 1, the fibers are The foamed curable resin liquid is applied to the fiber bundles G, and is further squeezed between the impregnating table 2 and the impregnating plate 3, thereby impregnating the inside of each fiber bundle G with the foamed curable resin liquid. Such a fiber bundle G is guided into a forming path 8 surrounded by endless belts 4, 5 and side belts 6, 7 whose inner peripheral surfaces are locked by slat chains 60, 70, and the endless belt 4, 5 and side belts 6, 7
progress with Endless belts 4 and 5 are upper mold 1
The inner peripheral surfaces thereof are in contact with and supported by a group of mold rollers 12 that are rotatably supported on the upper mold 10 and the lower mold 11. A wheel 1 rotatably supported by a fixture 13 fixed to a
A slat chain 60 that is rotatable in contact with 4,
The inner circumferential surface thereof is locked and supported by the belt 70, and as a result, the endless belts 4, 5 and the side belts 6, 7 can be easily rotated.

As a result, when the fiber bundle G is pulled by the tensioning machine 15, the foam curable resin liquid contained in the fiber bundle G is transferred to the endless belts 4, 5, the side belts 6,
Foaming and curing are performed during the progress in contact with step 7. During foaming, there are endless belts 4, 5 and side belts 6, 7 around the fiber bundle G, and the endless belt 4
, 5 are in contact with the mold rollers 12, and slat chains 60, 70 are engaged with the inner peripheral surfaces of the side belts 6, 7, so that the foamed resin liquid flows outside the molding passage 8. I can't go out. Therefore, endless belt 4
, 5 and the outer surfaces of the side belts 6, 7, a plate-shaped molded body S can be manufactured.
(See Publication No. 36414).

[0005] Furthermore, in order to produce a homogeneous plate-shaped molded body S, the foamed curable resin liquid jetted from the jetting machine 1 is used as a fiber bundle G.
It is necessary to spread the foam curable resin evenly on the fiber bundle G and impregnate the foam curable resin liquid adhered by the spraying into the fiber bundle G. For this purpose, the jetting machine 1 is moved back and forth in the horizontal direction as shown by the arrow in Fig. 4. At the same time, the impregnating plate 3 is held against the impregnating table 2 and moved back and forth in the lateral direction to rub the impregnating plate 3 (see Japanese Patent Publication No. 50-29751).

[0006]

[Problems to be Solved by the Invention] However, when the cross-sectional size of the plate-shaped molded body S increases, the resin liquid tends to
Since it is difficult for the plate-like molded body S to be impregnated from the inside downward, the specific gravity of the plate-shaped molded body S manufactured in such a state is higher at the peripheral edge compared to the inside, and the molded body S with homogeneous properties
was difficult to obtain.

The present invention has been made in view of these problems, and provides a method for manufacturing a plate-shaped molded body that can produce a plate-shaped molded body with a large cross-sectional size and a uniform specific gravity distribution. It is.

[0008]

[Means for Solving the Problems] The present invention involves continuously advancing a plurality of fiber bundles in which a large number of long fibers are bundled and arranged in a thin layer toward an impregnating table; At this time, the spraying nozzles placed above each of the fiber bundles are moved back and forth in the width direction, and the foamed curable resin liquid is sprayed from each spraying nozzle onto each fiber bundle so that the resin liquid adheres to the fiber bundles. An impregnating plate placed above the impregnating table holds each layered fiber bundle and moves it back and forth in the width direction, impregnating the fiber bundle with resin liquid, and converging the fiber bundles impregnated with the resin liquid. The resin liquid is then introduced into a molding passage, where the resin liquid is foamed and hardened.

[0009]

[Operation] Fiber bundles formed by bundling reinforcing materials such as glass fibers are arranged in a thin layer. A plurality of layers of fiber bundles arranged in layers in this manner are prepared, and each layer of fiber bundles is continuously advanced toward the impregnation table. Then, while the layered fiber bundles are traveling, a foamed curable resin liquid is sprayed onto each fiber bundle from a spray nozzle that is disposed above each fiber bundle and moves back and forth in the width direction so that it adheres to each fiber bundle. Next, each fiber bundle with the resin liquid attached is collected on an impregnation table, and an impregnation plate placed above moves back and forth while pressing the fiber bundles, so that the resin liquid is inside the fiber bundles. It can be impregnated up to. When the fiber bundle is impregnated with the foamed curable resin liquid in this way, the fiber bundle is guided to the molding passage, where the resin liquid is foamed and hardened, producing a plate-shaped molded body. .

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0011] The overall configuration of the apparatus was previously explained in the section of the prior art, so detailed explanation thereof will be omitted.

FIGS. 1 to 3 show a structure in which a foamed curable resin liquid is applied to a fiber bundle G, and the fiber bundle G is impregnated with the applied resin liquid. In each of these figures, 2
Reference numeral 1 denotes gates used to draw out the long fibers g from a bobbin (not shown), and these gates 21 are arranged in multiple stages at appropriate intervals in the vertical direction. Further, on the downstream side of these gates 21, an impregnating table 2 and a plurality of impregnating plates 3 provided above the impregnating table 2 at appropriate intervals are arranged. Although not shown in detail, these impregnated plates 3 are configured to be able to reciprocate in the width direction (horizontal direction in FIG. 2) using a crank mechanism or the like, and to be able to move up and down in the vertical direction using a cylinder or the like.

On the other hand, on the upstream side of the above-mentioned impregnation plate 3, there is a spray nozzle 22 for spraying a foamed curable resin liquid onto a plurality of fiber bundles G pulled out from each gate 21 in a thin layered manner. are arranged, and each of these spray nozzles 22 is connected to a mixing head 23 for resin liquid via a pipe 24. The spraying nozzle 22 is bent downward and has a tapered escape hole 22a at its tip, and has a connecting portion 2 with a pipe 24 at its base end.
It is composed of a tubular body provided with 2b. Further, the mixing head 23 is attached to the tip of a cylindrical body 26 that is slidably inserted into a guide rail 25 disposed above the fiber bundle G. Inside the cylindrical body 26, a flexible pipe 27 for supplying the resin liquid is connected to the mixing head 23.
It has been extended to

When the resin liquid is sprayed by the spray nozzle 22, the resin liquid is spouted into the tubular body constituting the spray nozzle 22 in the same direction as the resin liquid discharged from the escape hole 22a. It is also possible to form a large number of discharge holes or slits. Further, instead of having a plurality of spray nozzles 22 branched from one mixing head 23, a plurality of mixing heads 23 corresponding to each spray nozzle 22 may be provided.

By the way, each fiber bundle G in this embodiment
As shown in FIG. 3, the positional relationship of the spraying nozzles 22 with respect to the fiber bundles G is such that the spraying nozzles 22 that spray the fiber bundles G in the lower layer are closer to the gate 21 side. This is extremely effective in preventing the resin liquid dripping from the fiber bundle G in the upper layer from adhering to the spray nozzle 22 arranged above the fiber bundle G in the lower layer. Further, the mounting height of each spray nozzle 22 changes depending on the mounting height of each gate 21, and the amount of change can be adjusted by changing the length of the pipe 24.

Therefore, when the fiber bundles G arranged in thin layers are pulled out from each gate 21,
A foamed curable resin liquid is sprayed onto each layered fiber bundle G from the spray nozzle 22 while the fiber bundle G is in progress. Each fiber bundle G to which the resin liquid has been attached is guided to the impregnating table 2, and is pressed and clamped by the impregnating plate 3 provided above the impregnating table 2, and at the same time is moved back and forth in the width direction of the impregnating plate 3. It gets rubbed due to movement. As a result, the resin liquid attached to each fiber bundle G is
Even the inside of the fiber bundle G is impregnated. Next, each fiber bundle G is impregnated with a resin liquid and pulled out from the impregnation table 2 and guided to a forming passage 8, where the resin liquid foams and hardens to form a plate-shaped molded body S. be done.

[0017]

As described above, according to the method for manufacturing a plate-shaped molded article of the present invention, when a plurality of fiber bundles made of a large number of long fibers are bundled and arranged in a thin layer are continuously advanced, each of them A foamed curable resin liquid is sprayed and adhered to the fiber bundles through a spray nozzle that moves back and forth in the width direction, and the impregnated plates sandwich each fiber bundle to which the resin liquid has been applied and move them back and forth in the width direction. By impregnating the fiber bundle with the resin liquid, it is possible to uniformly spread the foaming curable resin liquid to the fiber bundle and impregnate the inside of the fiber bundle, so even if the cross-sectional size is large. Even if there is such a problem, it is possible to produce a plate-shaped molded body with a uniform specific gravity distribution.

[Brief explanation of the drawing]

[Figure 1] A perspective view showing the process of attaching and impregnating a fiber bundle with resin liquid.

[Figure 2] Front view of Figure 1

[Figure 3] Side view of Figure 1

[Fig. 4] Overall perspective view showing an outline of a manufacturing apparatus for a plate-shaped molded body

[Fig. 5] Cross-sectional view showing a forming path in a plate-shaped molded body manufacturing device

[Explanation of symbols]

2 Impregnation table 3 Impregnated board 8 Molding passage 22 Spraying nozzle 23 Mixing head 25 Guide rail g Long fiber G Fiber bundle S　Plate shaped body

Claims (1)

[Claims] Claim 1: A plurality of fiber bundles in which a large number of long fibers are bundled and arranged in a thin layer are continuously advanced toward an impregnation table,
As these fiber bundles move continuously, the spraying nozzles placed above each of the fiber bundles are moved back and forth in the width direction, and the foamed curable resin liquid is sprayed from each spraying nozzle onto each fiber bundle. An impregnating plate placed above the impregnating table holds each layer of fiber bundles with resin liquid and moves them back and forth in the width direction to impregnate the fiber bundles with resin liquid. A method for manufacturing a plate-shaped molded article, which comprises converging fiber bundles impregnated with a liquid and guiding them to a molding passage, in which a resin liquid is foamed and hardened.