JPH0655644A - Resin liquid spray nozzle for plate molded body manufacturing device - Google Patents

Abstract

PURPOSE:To provide a spray nozzle for a plate molded body manufacturing device capable of spraying resin liquid comparatively uniformly on a plurality of fiber bundles made in such a manner that a large number of long fibers are bundled and arranged in a thin layer and made to proceed continuously to an impregnating stage. CONSTITUTION:A large number of long fibers are bundled and arranged in a thin layer, and a plurality of fiber bundles G are made to proceed continuously to an impregnating stage. A plate molded body manufacturing device comprises a spray nozzle for spraying expansion setting resin liquid on the fiber bundles G by reciprocating in the cross direction. Discharge outlets 11a and 11b of the spray nozzle 2 are arranged downwardly at two parts or more with their positions deviated obliquely with respect to the cross direction of the fiber bundles G.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin liquid spray nozzle in a plate-shaped molded body manufacturing apparatus for manufacturing a plate-shaped molded body suitable for building materials and the like.

[0002]

2. Description of the Related Art As a method for manufacturing a plate-shaped molded body by a plate-shaped molded body manufacturing apparatus, for example, as shown in FIG. 8, a plurality of fiber bundles G in which a large number of long fibers g are bundled and arranged in a thin layer are arranged. When the fiber bundles G are continuously advanced toward the impregnation table 1 and are continuously advanced, the fiber bundles G are arranged at least above the uppermost fiber bundle G in a vibrating state. The foaming curable resin liquid is sprayed from the spraying nozzle 2 that reciprocates in the width direction to adhere and permeate to each fiber bundle G, and each fiber bundle G to which the resin liquid has adhered and permeates is arranged above the impregnation table 1. The fiber bundle G is impregnated with the resin liquid by reciprocating in the width direction while being sandwiched by the impregnating plate 3, and the fiber bundle G impregnated with the resin liquid is converged and guided to the molding passage, in which the resin liquid is impregnated. Is a method for producing a plate-shaped molded article by foaming and curing the same. It had been developed by the same person and.
(See Japanese Patent Application No. 3-104426)

[0003]

However, since the conventional spraying nozzle 2 has only one discharge port 4 formed at the tip of the spraying nozzle 2, the fiber bundle is reciprocally moved. When the foaming curable resin liquid is sprayed on G, when the spraying nozzle reverses at both ends a of the fiber bundle G as shown in FIG. Both ends a of G
However, there is a problem that a large amount of the foam curable resin liquid A adheres to the surface of both ends of the fiber bundle G so that it is raised.

Further, when the advancing speed (molding speed) of the fiber bundle G is increased, the interval between the portions not covered with the resin liquid in the advancing direction of the fiber bundle G becomes large, and impregnation is likely to be non-uniform. Further, if the reciprocating speed of the spray nozzle 2 is increased in order to reduce the interval of the resin liquid to be sprayed, there is a problem that the amount of resin at both ends is increased. Therefore, it was not possible to produce a plate-shaped molded product having stable properties.

The present invention has been made in view of the above problems, and its object is to provide a plurality of long fibers bundled in a thin layer and continuously advanced to the impregnation table side. The present invention provides a spraying nozzle in a plate-shaped molded body device capable of spraying a resin liquid relatively uniformly on the fiber bundle.

[0006]

According to the present invention, a plurality of fiber bundles are formed by bundling a plurality of long fibers arranged in a thin layer and continuously advancing to the impregnating table side by reciprocating in the width direction and foaming. In a plate-shaped molded body manufacturing apparatus provided with a spraying nozzle for spraying a curable resin liquid, a configuration in which the discharge port of the spraying nozzle is formed downward and obliquely with respect to the width direction of the fiber bundle is formed at two or more locations. I am doing it.

[0007]

With the above-described structure, the foaming curable resin liquid is sprayed while reciprocating the spray nozzle in the width direction of the fiber bundle, so that both ends of the advancing fiber bundle in the width direction, that is, the spray nozzle is reversed. At the place to be filled, due to the displacement of the discharge port, the foam curable resin liquid is dispersed to some extent without being concentratedly dispersed at one place when the nozzle is reversed,
The resin liquid can be relatively uniformly attached to the fiber bundle.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5, reference numeral 5 denotes a gate used when drawing out the long fiber g from a bobbin (not shown), and these gates 5 are arranged in a plurality of stages at appropriate intervals in the vertical direction. Further, on the downstream side of these gates 5, the impregnation base 1 and a plurality of impregnation plates 3 provided above the impregnation base 1 at appropriate intervals are arranged. Although not shown in detail, these impregnated plates 3 are configured to be capable of reciprocating in the width direction (direction orthogonal to the paper surface in FIG. 2) by a crank mechanism or the like, and vertically movable by a cylinder or the like. . Reference numeral 6 denotes an oscillating device, which is configured as a comb-like body that holds the long fibers g that form the fiber bundle G between the teeth 7a, 7a and is capable of reciprocating in the width direction.

Further, on the upstream side of the impregnating plate 3, the spray nozzles 2 for spraying the foaming curable resin liquid on the plurality of fiber bundles G which are arranged and drawn out from the gates 5 in thin layers. Are arranged, and each of these spraying nozzles 2 is connected to a resin liquid mixing head 8 via a pipe 9. The above-mentioned spray nozzle 2 is shown in FIG.
As shown in FIG. 2, it is a tubular body that is bent downward and has a connecting portion 10 for connecting to a pipe 9 at its base end, and a cylindrical body 11 at the tip of the spray nozzle 2 (see FIGS. 3 to 4). In 2
The discharge ports 11a and 11b formed at the locations are opened downward and are formed so as to be displaced obliquely with respect to the width direction of the fiber bundle G. The discharge ports 11a and 11b communicate with the tubular body.

As shown in FIG. 5, the spray nozzle 2 is formed by branching a tubular body at a position oblique to the width direction of the fiber bundle G to form discharge ports 11a and 11b. Good. Also, the number of discharge ports is not limited to two, three,
Four or more may be formed. The spray nozzle 2
When the resin liquid A is sprayed on the advancing fiber bundle G while reciprocating in the width direction, as shown in FIGS. 6 to 7, is the discharge port 11b and is the resin liquid sprayed from the discharge port 11a. The state of attachment of A to the fiber bundle G is shown (Fig. 6).
(See (a)), as described above, the discharge port 11a and the discharge port 1
The resin liquid A sprayed from the discharge ports 11a and 11b of the spraying nozzle 2 reciprocating with respect to the advancing fiber bundle G is formed because the positions of the resin liquid A and 1b are offset from each other by a predetermined distance (see FIG. 7). At the both ends a of the fiber bundle G, the positions of attachment are displaced (see FIG. 6C). as a result,
The total distribution state of the resin liquid sprayed from the discharge ports 11a and 11b becomes a state like + in the drawing (see FIG. 6B), and is made uniform to some extent. In addition, the resin spraying interval in the traveling direction of the fiber bundle G is also small. It should be noted that although the ejection ports 11a and 11b of the spray nozzle 2 are provided so as to be displaced obliquely with respect to the width direction of the fiber bundle G, they are ejected and attached from both ejection ports 11a and 11b according to the traveling speed of the fiber bundle G. It is advisable to adjust the angle at which the resin liquid is obliquely displaced so that the distance between the fiber bundles G of the resin liquid in the lengthwise direction becomes substantially equal.

The mixing head 8 is attached to the tip of a cylindrical body 13 slidably fitted in a guide rail 12 arranged above the fiber bundle G. And
A flexible pipe (not shown) for supplying a resin liquid is extended to the mixing head 8 inside the cylindrical body 13. In addition, although the spray nozzle 2 is provided corresponding to each fiber bundle G, the resin liquid may be sprayed to the fiber bundle G of a plurality of layers by one spray nozzle 2. In this case, since the lower layer fiber bundle G is less likely to be exposed to the resin liquid than the upper layer fiber bundle G, the number of the lower layer fiber bundles G is gradually reduced to form one long fiber g constituting the fiber bundle G. It may be arranged so that the spray amount per hit is almost uniform. Further, instead of branching the plurality of spraying nozzles 2 from one mixing head 8, a plurality of mixing heads 8 corresponding to the respective spraying nozzles 2 may be provided.

Further, the spray nozzle 2 for each fiber bundle G
As shown in FIG. 2, the positional relationship of 2 is such that the spray nozzles 2 that spray the lower fiber bundles G are closer to the gate 5 side. This is a spray nozzle 2 in which the resin liquid dropped from the upper fiber bundle G is arranged above the lower fiber bundle G.
It is extremely effective in preventing the adherence to. Further, the mounting height of each spray nozzle 2 changes depending on the mounting height of each gate 5, and the amount of change can be adjusted by changing the length of the pipe 9.

[0013]

As described above, according to the resin liquid spraying nozzle in the plate-shaped molded body manufacturing apparatus of the present invention, the discharge port of the spraying nozzle is directed downward while reciprocating in the width direction with respect to the advancing fiber bundle. In addition, since the foaming curable resin liquid is sprayed from the discharge port of the spray nozzle formed at two or more positions that are diagonally displaced with respect to the width direction of the fiber bundle, swelling and adhesion of the resin liquid is suppressed at both ends of the fiber bundle as much as possible. Can also,
The resin spraying interval with respect to the traveling direction of the fiber bundle is also narrowed, and the foam curable resin liquid can be relatively uniformly attached to the fiber bundle. Therefore, it is possible to produce a product having stable properties, and it is easy to deal with the improvement of the molding speed.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment in which a resin liquid is attached to a fiber bundle and impregnated with the resin liquid.

FIG. 2 is a simplified side view of FIG.

FIG. 3 is a front view of a main part showing an example of a spray nozzle.

FIG. 4 is a bottom view of FIG.

FIG. 5 is a cross-sectional view of main parts showing another example of the spray nozzle.

FIG. 6 (a) is a cross-sectional view of the adhered state of the resin liquid sprayed from each discharge port, and FIG. 6 (b) is a cross-sectional view of the combined state of the resin liquid sprayed from each discharge port. 6 (c) is a flat surface of the resin liquid sprayed on the fiber bundle from each discharge port,
It is each explanatory view showing.

FIG. 7 is a plan view showing the positional relationship between the spray nozzle and the fiber bundle according to the present invention during operation.

FIG. 8 is a perspective view of an example in which a resin liquid is attached to and impregnated with a conventional fiber bundle.

FIG. 9 is an explanatory diagram showing a state in which a resin liquid is sprayed by a conventional spray nozzle.

[Explanation of symbols]

 1 Impregnation base 2 Dispersion nozzle 3 Impregnation plate 11a, 11b Discharge port g Long fiber G Fiber bundle

Claims (1)

[Claims] 1. A spraying method in which a foam curable resin liquid is sprayed by reciprocating in the width direction on a plurality of fiber bundles formed by bundling a large number of long fibers arranged in a thin layer and continuously advancing toward the impregnation table side. In a plate-shaped molded body manufacturing apparatus provided with nozzles, the discharge port of the spraying nozzle is formed downward and obliquely with respect to the width direction of the fiber bundle, and the plate-shaped molded body is formed in two or more positions. Resin liquid spray nozzle in manufacturing equipment.