JPH04261833A - Manufacture of platlike formed object - Google Patents

Abstract

PURPOSE:To remove easily the resin liquid having stayed in the impregnation with resin liquid, while a uniform and correct platelike object is produced. CONSTITUTION:When a fiber bundle G is continuously moved downward, at least a pair of impregnation rods 31, 31 formed in polygonal cross section are rotataed by prescribed angle in each set time and press and nip the fiber bundle G, while the contact surface with the fiber bundle G is changed, and are simultaneously moved in reciprocation, whereby the fiber bundle G is crumpled and its inner part is impregnated with resin liquid. The resin liquid having stayed on one surface of the impregnation rod 31 is removed, when the contact with the fiber bundle is released by the rotation of the impregnation rod 31.

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 product 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 bundle G and is further rubbed between the impregnating table 2 and the plurality of impregnating plates 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. The endless belts 4 and 5 are supported with their inner peripheral surfaces in contact with a large number of mold rollers 12 groups rotatably supported by the upper mold 10 and the lower mold 11, respectively, and the side belts 6 and 7 is the upper mold 10
The inner peripheral surface thereof is engaged with and supported by slat chains 60, 70 which are rotatable by contacting a wheel 14 which is rotatably supported by a fixture 13 that fixes the mold to the lower mold 11. 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 bundles 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 width direction as shown by the arrow in Fig. 4. At the same time, the impregnating plate 3 is configured to reciprocate in the width direction while holding the fiber bundle G between the impregnating table 2 and kneading it (see Japanese Patent Publication No. 50-29751).

[0006]

[Problems to be Solved by the Invention] By the way, when the fiber bundle G to which the resin liquid is attached is rubbed by the impregnating table 2 and the impregnating plate 3, a part of the resin liquid is pushed out to the upstream side of the fiber bundle G and the impregnating table It will ooze out onto 2. Since this resin liquid foams and hardens over time, it is necessary to frequently clean the resin liquid that has oozed out onto the impregnation table 2. However, such cleaning work is performed manually in a narrow space where the fiber bundles are moving above it, which is not only complicated, but also requires a large number of man-hours per operation. This placed a heavy burden on people.

On the other hand, when the cross-sectional size of the plate-shaped molded body S becomes large, it becomes difficult for the resin liquid to penetrate from the inside of the fiber bundle G downward by reciprocating only the impregnation plate 3, and the plate manufactured in such a state The specific gravity of the molded body S was higher at the peripheral edge than at the inside, making it difficult to obtain a molded body S with uniform properties.

For this reason, it is possible to improve the degree of impregnation of the fiber bundle G with the resin liquid by reciprocating the impregnation table 2, but cleaning the impregnation table while reciprocating the impregnation table requires cleaning. In addition to the complexity, there are safety issues.

The present invention has been made in view of these problems, and it is possible to produce a plate-shaped molded product with a uniform specific gravity distribution even if the cross-sectional size is large, and it is also possible to easily clean the stagnant resin liquid. The present invention provides a method for manufacturing a plate-shaped molded body.

0010

[Means for Solving the Problems] The present invention involves continuously advancing a fiber bundle consisting of a large number of long fibers to which a foamed curable resin liquid is attached, from above to below, so that the fiber bundle is directed downward. When the process continues, at least one set of impregnating rods each having a polygonal cross section rotates by a predetermined angle at set time intervals and moves back and forth while holding the fiber bundle while changing the contact surface with the fiber bundle. The method is characterized in that the fiber bundle is impregnated with a resin liquid, and then the fiber bundle impregnated with the resin liquid is led to a molding passage, where the resin liquid is foamed and hardened.

[0011]

[Operation] A fiber bundle made of long fibers such as glass fibers to which a foamed curable resin liquid is attached is made to continuously advance downward. By reciprocating the set of impregnating rods while holding the fiber bundle, the inside of the fiber bundle is impregnated with the resin liquid attached to the fiber bundle. These impregnation rods are rotated by a predetermined angle at set time intervals, and the contact surface with the fiber bundle is sequentially changed to other sides.

[0012] When the fiber bundles are impregnated with the foamed curable resin liquid, the fiber bundles are guided into a molding passage, and the resin liquid is foamed and cured in this molding passage, thereby producing a plate-shaped molded body. be done.

Therefore, the impregnating property of the fiber bundle is improved by rubbing it from both sides with the impregnating rod, and the cleaning operation is made easier because the impregnating rod only needs to be rotated to clean one side of the fiber bundle away from the fiber bundle. It can be carried out.

[0014]

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

[0015] The overall structure of the apparatus was previously explained in the section of the prior art, so a detailed explanation thereof will be omitted.

FIGS. 1 and 2 show a configuration in which a foamed curable resin liquid is applied to a large number of long fibers g, and a fiber bundle G is impregnated with the applied resin liquid. In these figures, reference numerals 21 and 21 are guide gates that have a number of guide holes (not shown) provided at appropriate intervals in the width direction (direction perpendicular to the paper surface of FIG. 1), and are pulled out from a bobbin (not shown). After passing through these guide holes, long fibers g such as glass fibers are guided toward a gate 22 arranged below the guide gates 21, 21. This gate 22
is formed into a ring shape, and a large number of gate holes 22a are provided at its peripheral edge, and the guide gates 21 and 2 described above are provided with a large number of gate holes 22a.
The long fibers g guided from 1 are arranged in the circumferential direction by passing through these gate holes 22a.

Furthermore, a guide cone 23 formed in the shape of an inverted truncated cone with an open upper and lower surface is disposed below the gate 22, and guide cones 23 are arranged in a circumferential manner through the gate hole 22a described above. The long fiber g is the guide cone 23
It is guided through the upper surface opening 23a and advances downward along its inner surface. As these long fibers g proceed downward, they are gradually converged so as to narrow the distance between adjacent long fibers g, and pass through the lower opening 23b of the guide cone 23.

Note that the gate 22 and the guide cone 23
is made of polypropylene with excellent mold releasability and abrasion resistance.

By the way, a rotating shaft 24 is rotatably supported above the center of the guide cone 23, and a foamed hardening resin liquid is applied via a disk 25 at a position spaced apart from the rotating shaft 24 by a predetermined radius. A jetting machine 1 is fixed. This blower 1 is fixed so as to face a position where the long fibers g, which proceed downward to converge along the inner surface of the guide cone 23, are substantially densely packed in a uniform layer. Therefore, the shape of the guide cone 23 is not particularly important as long as the part where the foamed curable resin liquid is sprayed from the ejector 1 toward the long fibers g is closed. Furthermore, the lower surface opening 23b of the guide cone 23 has long fibers g.
is formed at a convergence port where the convergence port converges, and the size of this convergence port changes depending on the size of the molded body S to be manufactured.
Its shape is not limited to circular, but may be angular.

Furthermore, a fiber bundle G formed by the long fibers g passing through the convergence port 23b of the guide cone 23
are pressed and clamped by impregnation rods 31, 31 and 32, 32 via guide rolls 26, 26 which are rotatably supported under the convergence port 23b, and furthermore, the reciprocation of these impregnation rods 31 and 32 As a result of being rubbed by the movement, the resin liquid attached to the fiber bundle G is impregnated into the inside thereof.

These impregnating rods 31 and 32 have a rectangular cross section and are configured to be rotatable about an axis extending in the width direction. Then, by rotating 90 degrees in the direction of the arrow at every set time, the contact surface with the fiber bundle G can be sequentially changed to another side. Therefore, a part of the resin liquid pushed out by the impregnating rods 31 and 32 drips onto the saucer 27 and stays on the upper surface of the impregnating rods 31 and 32, but each of the impregnating rods 31 and 32 rotates. When the fiber bundle G is released from contact with the fiber bundle G, for example, when the side surface where the resin liquid has accumulated is positioned outward, a scraper or brush movable vertically or widthwise is moved (not shown in detail). The resin liquid can be scraped off and cleaned by using mechanical force.Mechanical force can also be used for this cleaning.

In this case, if one of the impregnating rods is configured to be cleaned by stopping the pressing and reciprocating movement, and the other impregnating rod is moved reciprocating while being press-clamped, the fiber bundle G can be impregnated with at least one set of impregnated rods. Since the fiber bundle G is constantly rubbed with a rod, the impregnation of the resin liquid into the fiber bundle G is not interrupted.

The fiber bundle G, which has been impregnated in this way, is then guided into the forming passage 8 with its traveling direction changed to the horizontal direction by the rotatable guide roll 28, in which the resin liquid is foamed and hardened. let

[0024] Therefore, a large number of long fibers g such as glass fibers drawn from a bobbin (not shown) are first guided downward through the guide holes of the guide gates 21, 21, and then passed through the gate 22 disposed below. gate hole 22a
are arranged in the circumferential direction by passing through each
Furthermore, it is guided from the upper surface opening 23a of the guide cone 23 and advances along its inner surface so as to converge toward the lower surface opening 23b. When the long fibers g move downward along the inner surface of the guide cone 23, the gap between them narrows and the ejector 1, which performs a circular motion, moves in a circular motion toward the position where the distance between the long fibers narrows and forms a uniform layer. Resin liquid is sprayed.

After that, the long fibers g pass through the convergence port 23b formed at the lower end of the guide cone 23, and the fiber bundle G formed by convergence is transferred to the impregnated rods 31, 31, 32.
, 32, and at the same time are squeezed by their reciprocating movement and guided to the molding passage 8, where the resin liquid foams and hardens to form the plate-shaped molded body S. Ru.

[0026] In this embodiment, the impregnating rods are formed to have a rectangular cross section and are provided in a plurality of sets, but the impregnating rods are not limited to such a shape and the number of sets. In other words, if the impregnation rod is formed into a more polygonal shape, the internal angle formed by the adjacent side surfaces will be an obtuse angle, and the fiber bundle G will not be cut at the corner during rotation. It can be rotated by a predetermined angle so that the other side surface immediately comes into contact with the fiber bundle G without interrupting the pressing and clamping by the rod. Therefore, since it is not necessary to stop the reciprocating movement of these impregnating rods when cleaning them, it is possible to impregnate the resin liquid with at least one set of impregnating rods.

On the other hand, when multiple sets of impregnated rods are provided,
The fiber bundle G can be arranged so as to be guided along a certain curvature, and the distance between the impregnating rods of each set may be arranged such that the distance between the impregnating rods is narrower as the impregnating rods are located lower. Furthermore, each set of impregnating rods can be arranged in a grid pattern.

Furthermore, in this embodiment, resin liquid is attached to the long fibers g using the guide cone 23, and the resin liquid is guided downward to converge, but other embodiments as shown in FIG. Examples can also be adopted. That is, in this embodiment, the long fibers g are arranged and advanced in layers by a plurality of guide gates 21A, and these layered long fibers are arranged in a plurality of layers arranged corresponding to each layered long fiber. The resin liquid is configured to be sprayed through the spray nozzle 40. Each of the layered long fibers G to which these resin liquids are attached is converged and formed into a fiber bundle G by winding the guide roll 26A, and at the same time is continuously advanced downward. .

Next, the fiber bundle G traveling downward is pressed and clamped from both sides by a pair of impregnating rods 31A, 31A, and is further rubbed by the reciprocating movement of the impregnating rods 31A, 31A, so that the fiber bundle G The resin liquid attached to the surface is impregnated into the inside of the surface.

These impregnated rods 31A, 31A are formed to have a hexagonal cross section, and 6 impregnated rods are formed around an axis extending in the width direction at each set time.
By rotating 0 degrees, the contact surface with the fiber bundle G can be sequentially changed to other sides. Even if the resin liquid pushed out by the impregnating rods 31A, 31A stays in the impregnating rods 31A, 31A, when the impregnating rods 31A, 31A rotate, the resin liquid is scraped off using a scraper or a brush. Can be cleaned.

The fiber bundle G that has been impregnated in this way is then led to the forming passage 8, where the resin liquid is foamed and hardened.

[0032]

As described above, according to the present invention, a fiber bundle consisting of a large number of long fibers to which a resin liquid is attached is made to travel continuously from above to below. At least one set of impregnating rods placed on both sides of the fiber bundle rotate through a predetermined angle every set time to change the contact surface with the fiber bundle while moving back and forth while pressing and clamping the fiber bundle to inject resin liquid into the inside of the fiber bundle. By impregnating the fiber bundle with resin and introducing it into the molding path to produce a molded body, the impregnation of each fiber bundle with the resin liquid is improved, so even if the cross-sectional size is large, a uniform specific gravity distribution can be achieved. It is possible to manufacture molded objects, and at the same time, when the impregnating rod rotates and the other side comes into contact with the fiber bundle, it is possible to clean the resin liquid that has accumulated on the impregnating rod, making cleaning work easier. be able to.

[Brief explanation of the drawing]

[Fig. 1] A partially cutaway side view showing an example of attaching and impregnating long fibers with a resin liquid.

[Figure 2] Plan view of Figure 1

[Fig. 3] A perspective view showing another embodiment in which long fibers are attached to and impregnated with a resin liquid.

[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]

1　Blowout machine 8 Molding passage 21, 21A Gate 22 Guide cone 31, 32, 31A impregnated rod g Long fiber G Fiber bundle S　Plate shaped body

Claims (1)

[Claims] Claim 1: A fiber bundle consisting of a large number of long fibers to which a foamed curable resin liquid is adhered is continuously advanced from above to below, and when this fiber bundle is continuously advanced downward, At least one set of impregnating rods each having a polygonal cross-section rotate by a predetermined angle at set times to change the contact surface with the fiber bundle and move back and forth while holding the fiber bundle, thereby impregnating the fiber bundle with resin liquid. 1. A method for manufacturing a plate-shaped molded article, which comprises: introducing the fiber bundle impregnated with a resin liquid into a molding passage, and causing the resin liquid to foam and harden therein.