JPS6045565B2 - Manufacturing method of extrusion molded plate with reinforced wire mesh - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves extruding asbestos cement, gypsum, and other similar raw materials using an extrusion molding machine;
The present invention relates to a method for producing an extrusion-molded plate in which a reinforcing wire mesh is interposed in a desired layer (wall thickness depth) of the extrusion-molded plate.

Recently, building materials made of asbestos cement, gypsum, and similar raw materials have been manufactured by extrusion molding using an extrusion molding machine.

The advantage of producing a molded plate using this extrusion molding machine is that a molded product with a desired cross-sectional shape can be easily obtained by appropriately replacing the die of the extrusion molding machine. However, on the other hand, such extruded products are inferior in terms of strength and impact resistance compared to conventional products made of homogeneous raw materials reinforced with reinforcing bars, so improvements in these properties have been desired for use as construction materials. Desirable properties for construction materials made from asbestos-cement, concrete, and gypsum materials are light weight, high strength and dimensional accuracy after hardening, and excellent fire resistance. For example, the material must have shape retention to a degree that does not cause damage.

The present invention has been proposed for the purpose of providing a method for manufacturing an extrusion-molded board containing reinforcing wire mesh in order to obtain an extrusion-molded board as a construction member that satisfies the above conditions. When producing extrusion-molded plates by extrusion-molding raw materials, the upper wall has a curved inclined groove for introducing reinforcing wire mesh that opens internally over the entire width of the upper wall, and the inner surface of the upper wall on the side where the cap is attached near the opening. A discharge pipe equipped with a plurality of reinforcing wire mesh guiding protrusions over its entire width is used, and at the same time, the raw material is forced into the discharge pipe by an extrusion molding machine, and the reinforcing wire mesh is inserted into the discharge pipe through the curved inclined groove. The reinforcing wire mesh was fed at a predetermined speed and introduced into the mouth together with the raw material while being pressed against each of the guide protrusions by the raw material, and the reinforcing wire mesh was strongly held by the compression force and extrusion force of the raw material by the extruder. The present invention relates to a method for manufacturing an extrusion-molded plate containing reinforcing wire mesh, which is characterized in that the extrusion molded plate is extruded from a die in a state in which the plate is extruded from a die.

Hereinafter, the present invention will be specifically explained with reference to the accompanying drawings.

In Fig. 1, reference numeral 1 denotes a discharge pipe section of an extrusion molding machine, and the inner circumferential surface of the discharge pipe section 1 is formed into a tapered shape as shown in the figure. are installed in a replaceable manner.

(In FIG. 1, they are shown integrally for simplicity of drawing.) 3 is a die in the drawing direction (dice) of the discharge pipe 1 at a suitable location slightly forward of the upper wall of the discharge pipe portion 1. direction towards the 2nd side)
The groove 3 is a curved sloping groove that is inclined toward , and is provided over its entire width. The reinforcing wire mesh 4 has a width that allows it to pass through the inclined groove 3 and the die 2. Reference numeral 5 denotes a plurality of reinforcing wire mesh guiding protrusions which are provided on the inner wall 1a near the joint of the discharge pipe section 1 with the die 2, as shown in FIG. The reinforcing wire mesh 4 fed into the discharge pipe section 1 is introduced into the die 2 while being guided by the projections 5 on its upper surface.

In the figure, 6 indicates a well-known core (middle ball) for forming the hollow part B in the product, and 7 indicates the product. An example of the discharge pipe section of an extrusion molding machine for carrying out the method of the present invention is as follows:
With the configuration as described above, the present invention is implemented as follows.

When the extrusion molding machine starts operating and the raw material A such as asbestos cement is press-fitted into the discharge pipe section 1, the reinforcing wire mesh 4 is inserted into the discharge pipe at a predetermined speed through the inclined groove 3 of the discharge pipe section 1. It is sent into section 1.

Then, the reinforcing wire mesh 4 moves toward the die 2 along a plurality of reinforcing wire mesh guide protrusions 5 protruding from the inner wall 1a of the discharge pipe section 1. In this case, the reinforcing wire mesh 4 moves toward the die 2 side. 1, the raw material A presses against each protrusion 5 and progresses in an orderly manner, and the raw material A passes through the mesh of the reinforcing wire mesh 4. The raw material A flows through the concave grooves 5'' (see Fig. 2) between the protrusions, and is forced into the die 2 through the opening at the tip of the discharge pipe section 1, and is then processed by the extruder.
The reinforcing wire mesh 4 is strongly held within the raw material by the compressive force and extrusion force acting on it, and is extruded from the die 2 to continuously form a molded product 7 reinforced by the reinforcing wire mesh 4. . The reinforcing wire mesh 4 can be interposed at a desired position within the upper wall of the molded product 7 by appropriately setting the height of the reinforcing wire mesh guiding protrusion 5 . Furthermore, in this case, since the reinforcing wire mesh 4 moves while being pressed by the raw material A against the plural reinforcing wire mesh guide projections 5, the width of the projections 5 and the width of the concave groove 5'' are set appropriately. In some cases, the reinforcing wire mesh 4 is formed by the raw material A fed under pressure by the extrusion molding machine.
It is possible to easily prevent the material from being inserted into the raw material in a mispositioned state due to damage or deformation. In summary, the present invention has a curved inclined groove for introducing a reinforcing wire mesh that opens the inside over the entire width of the upper wall at an appropriate position, when extruding a raw material using an extrusion molding machine to manufacture an extrusion molded plate, and A discharge pipe is provided with a plurality of reinforcing wire mesh guide protrusions along its entire width on the inner surface of the upper wall on the side where the mouthpiece is attached in the vicinity of the above-mentioned opening, and at the same time, raw materials are force-fed into the discharge pipe by an extrusion molding machine, and at the same time, the above-mentioned curved slope The reinforcing wire mesh is fed into the discharge pipe through the groove at a predetermined speed, and the reinforcing wire mesh is introduced into the mouthpiece along with the raw material while being pressed against each of the guide protrusions by the raw material, and is subjected to the compression force and extrusion force of the raw material by the extrusion molding machine. Therefore, according to the present invention, the gist is a method for producing an extrusion molded plate containing a reinforcing wire mesh, which is characterized in that the reinforcing wire mesh is extruded from a die while being strongly held.
Practical effects such as the ability to easily produce extruded plates that meet the performance requirements as architectural components: light weight, high strength after curing, high dimensional accuracy, excellent fire resistance, and good shape retention against impact. can be mentioned.

[Brief explanation of the drawing]

Fig. 1 is a schematic vertical cross-sectional view of the discharge pipe section (including the mouthpiece) of an extrusion molding machine used for carrying out the present invention, and Fig. 2 is a cross-section perpendicular to the plane of the paper of the reinforcing wire mesh guiding protrusion shown in Fig. 1. FIG. 3 is a perspective view of the product. 1: Discharge pipe section, 2: Mouthpiece (dice), 3: Curved inclined groove,
4: Reinforced wire mesh, 5: Reinforced wire mesh guide protrusion, 5'': Concave structure between each protrusion 5, 6: Core, 7: Molded product, A: Raw material, B
:Hollow part.

Claims (1)

[Claims] 1. When manufacturing an extrusion-molded plate by extruding raw materials using an extrusion molding machine, the upper wall has a curved slanted groove for introducing reinforcing wire mesh that opens inward over the entire width at an appropriate location, and a base near the opening. A discharge pipe equipped with a plurality of reinforcing wire mesh guide protrusions over its entire width is used on the inner surface of the upper wall on the installation side, and at the same time, the raw material is pumped into the discharge pipe by an extrusion molding machine, and reinforced via the curved inclined groove. The wire mesh is fed into the discharge pipe at a predetermined speed, and while the reinforcing wire mesh is pressed by the raw material against each of the guide protrusions, it is introduced into the mouth together with the raw material, and the reinforcing wire mesh is compressed by the compression force and extrusion force of the raw material by the extrusion molding machine. A method for manufacturing an extrusion-molded plate with reinforced wire mesh, characterized by extruding it from a die while strongly holding it.