JPH115204A - Molding equipment for hydraulic inorganic molded products - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To suction excess water in a hydraulic inorganic composition,
Provided is a molding apparatus for a hydraulic inorganic molded article that does not stain the surface of the molded article and impair the appearance of the molded article with water accumulated in a gap between an upper mold and a mold, even in a dehydrating molding apparatus. SOLUTION: A pair of molds 1, 2 which can be opened and closed, and a first
The mold 1 surrounds the outer periphery of the mold 1 and comprises a first mold 1 and a mold frame 3 slidable in the opening / closing direction of the first mold 1 in a state where the first mold 1 and the second mold 2 are closed. In a molding apparatus in which a cavity for supplying a hydraulic inorganic composition is formed and at least one suction hole 5 is provided on a mold surface of the first mold 1, compressed air is supplied to a mold frame 3. An opening 7 and an exhaust port 8 are provided, and the outer peripheral surface of the first mold 1 that slides with the mold frame 3 has a downward gradient toward the inner surface of the first mold 1.
2 with the compressed air supply port 7 and the exhaust port 8
Is provided with a concave groove 9 communicating with the groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for molding a hydraulic inorganic molded article.

[0002]

2. Description of the Related Art Conventionally, hydraulic inorganic molded products mainly composed of water, cement and the like and, if necessary, added with reinforcing fibers, are usually formed by a pair of molds that can be opened and closed, such as tiles. In such a molding, at least one air supply port is provided on the mold surface of one of the molds, and the water is sucked from the suction hole to make the cement water-squeezable. A mortar molded product manufacturing apparatus is known (JP-A-59-4).
No. 8106).

As shown in FIG. 8, the above-mentioned molded article manufacturing apparatus surrounds the upper mold a and the lower mold b, which can be opened and closed, and the outer periphery of the upper mold a, and slides the upper mold a in the opening and closing direction. The upper mold a is configured to be movable up and down with respect to the lower mold b.

When the upper mold a and the lower mold b are closed, a plurality of vacuum suction holes are formed on the lower surface of the upper mold a so that the hydraulic inorganic composition d can be filled, pressurized, and squeezed under low pressure. e is provided, and excess water in the filled hydraulic inorganic composition is drained through the vacuum suction hole e, discharged through the water extraction passage e, dewatered, and dewatered. Is obtained.

[0005]

When a molded article is obtained in this apparatus for producing molded articles, most of the surplus water is discharged from the water passage e, but a part of the water is shown in FIG. As described above, it is accumulated in the gap between the upper mold a and the mold c (f in the figure), and when the mold c moves up and down, it travels along the sliding surface between the upper mold a and the mold c to form a molded product g. There is a drawback that the surface is stained and the appearance is impaired.

[0006] The present invention solves the above-mentioned problems, and in a molding apparatus for sucking and dewatering excess water in a hydraulic inorganic composition, water collected in a gap between an upper mold and a mold frame can be used. It is another object of the present invention to provide a hydraulic inorganic molded article molding apparatus which does not stain the surface of the molded article and impair the appearance.

[0007]

According to the first aspect of the present invention, there is provided an apparatus for molding a hydraulic inorganic molded article, comprising: a pair of molds capable of being opened and closed;
A hydraulic inorganic composition comprising a first mold and a mold frame slidable in the opening and closing direction of the first mold and surrounding the outer periphery of the first mold, wherein the first mold and the second mold are closed. In a molding apparatus in which a cavity for supplying the first mold is formed and at least one suction hole is provided in a mold surface of the first mold, a compressed air supply port and an exhaust port are provided in the mold, The outer peripheral surface of the first mold that slides with the mold has a downward slope toward the inner surface of the first mold, and communicates with the compressed air supply port and the exhaust port in a state where the mold is closed. A groove is provided.

The molding apparatus for hydraulically molded inorganic molded articles according to the second aspect of the present invention includes a pair of molds that can be opened and closed, and surrounds the outer periphery of the first mold and is slidable in the opening and closing direction with the first mold. And a cavity for supplying the hydraulic inorganic composition in a state where the first mold and the second mold are closed, and at least a mold surface of the first mold is provided. In a molding apparatus provided with one suction hole, a concave groove communicating with the suction hole is provided on the outer peripheral surface of the first mold that slides with the mold frame.

According to a third aspect of the present invention, there is provided an apparatus for molding a hydraulic inorganic molded article, comprising: a pair of molds capable of being opened and closed; a mold surrounding the first mold and being slidable in the opening and closing direction of the first mold; And a cavity for supplying the hydraulic inorganic composition in a state where the first mold and the second mold are closed, and at least a mold surface of the first mold is provided. In the molding apparatus provided with one suction hole, a concave groove is provided on the outer peripheral surface of the first mold that slides with the mold, and the groove is provided below the concave groove in the inner surface direction of the first mold. A drain hole having a downward slope and communicating with the cavity is provided.

[0010] In the present invention 1 to 3, the hydraulic mineral composition includes a hydraulic inorganic substance which is hardened by a hydration reaction of cement, gypsum, calcium silicate, etc .; And water as needed, and mineral fibers, inorganic fibers such as glass fibers, animal and plant fibers, synthetic fibers, semi-synthetic fibers, organic fibers such as recycled fibers, and aggregates as necessary. Sand, gravel, etc., a quick setting agent, a pigment and the like.

According to the first to third aspects of the present invention, a draining plate having a number of small holes communicating with the suction holes is provided on the surface of the cavity of the first mold for uniformly sucking water from the entire cavity. May be provided. Further, a filter cloth which is permeable to water and impervious to a hydraulic inorganic composition other than water may be provided on the surface of the draining iron plate.

(Function) The apparatus for molding a hydraulic inorganic molded article according to the first aspect of the present invention includes a pair of molds that can be opened and closed, and surrounds the outer periphery of the first mold and moves in the opening and closing direction of the first mold. A mold for slidably forming a cavity for supplying the hydraulic inorganic composition in a state where the first mold and the second mold are closed, and a mold surface of the first mold. In a molding apparatus provided with at least one suction hole, the mold has a compressed air supply port and an exhaust port, and the outer peripheral surface of the first mold that slides with the mold has a 1 has a downward slope toward the inner surface direction of the mold, and is provided with a concave groove communicating with the compressed air supply port and the exhaust port in a state where the mold is closed. When sucking the excess water of
The water that has entered the gap between the upper mold and the mold without entering the suction hole accumulates in the concave groove, and after sucking the water, by supplying compressed air from the compressed air supply port, from the exhaust port. Since it is discharged together with the compressed air, the surface of the molded product is not stained.

According to a second aspect of the present invention, there is provided a molding apparatus for a hydraulic inorganic molded article, which includes a pair of molds that can be opened and closed, surrounds the outer periphery of the first mold, and is slidable in the opening and closing direction of the first mold. And a cavity for supplying the hydraulic inorganic composition in a state where the first mold and the second mold are closed, and at least a mold surface of the first mold is provided. In the molding apparatus provided with one suction hole, the outer peripheral surface of the first die, which slides on the mold, is provided with a groove communicating with the suction hole. When excess water in the hydraulic inorganic composition is sucked, water that has entered the gap between the upper mold and the mold without entering the suction hole accumulates in the concave groove and is discharged through the suction hole. Therefore, the surface of the molded article is not stained.

According to a third aspect of the present invention, there is provided an apparatus for molding a hydraulic inorganic molded article, comprising: a pair of molds capable of being opened and closed; a mold surrounding the outer periphery of the first mold; And a cavity for supplying the hydraulic inorganic composition in a state where the first mold and the second mold are closed, and at least a mold surface of the first mold is provided. In the molding apparatus provided with one suction hole, a concave groove is provided on the outer peripheral surface of the first mold that slides with the mold, and the groove is provided below the concave groove in the inner surface direction of the first mold. Since it has a downward slope and a drain hole communicating with the cavity is provided,
When sucking excess water in the hydraulic inorganic composition, water that has entered the gap between the upper mold and the mold without entering the suction hole,
Since it accumulates in the concave groove, enters the cavity through the drain hole, and is discharged through the suction hole, it does not stain the surface of the molded product.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing one example of a molding apparatus for a hydraulic inorganic molded article of the present invention 1, and shows a state in which a mold is split after molding is completed.

In FIG. 1, reference numeral 1 denotes an upper die which is a first die;
2 is a lower mold as a second mold, 3 is a mold frame, 4 is a hydraulic inorganic molded body, 5 is a suction hole provided in the upper mold 1, 6 is a draining iron plate, 7 is a compressed air supply port, 8 is The exhaust port 9 is a concave groove.

The mold for forming a hydraulic inorganic molded article is a pair of molds 1 and 2 that can be opened and closed, and surrounds the outer periphery of the upper mold 1 and is slidable in the opening and closing direction with the upper mold 1. And the formed mold 3. The molded article 4 to be molded for supplying the hydraulic inorganic composition in a state where the upper mold 1 and the lower mold 2 are closed.
A cavity (not shown) corresponding to the above shape is formed.

The upper surface of the upper mold 1 is provided with a plurality of suction holes 5 and 5 communicating with a suction device (not shown). It is designed to suck and drain water. The mold surface of the upper mold 1 is provided with a drainer iron plate 6 having a number of small holes communicating with the suction holes 5.

A pressurized air supply port 7 and an exhaust port 8 are provided in the mold 3, and the outer peripheral surface on which the upper mold 1 slides with the mold 3 has a downward slope toward the inner surface of the upper mold 1. Groove 9 is provided.

FIG. 2 is a partial cross-sectional view showing the compressed air supply port 7 and the concave groove 9 in an enlarged manner, showing a state in which the mold of the hydraulic inorganic molded article molding apparatus of FIG. 1 is closed. As shown in FIG. 2, the concave groove 9 having a downward slope toward the inner surface of the upper mold 1 communicates with the compressed air supply port 7 with the molds 1 and 2 closed.

FIG. 3 is a partial cross-sectional view showing a state in which the mold of the apparatus for molding a hydraulic inorganic molded article in FIG. As shown in FIG. 3, the concave groove 9 having a downward slope toward the inner surface direction of the upper mold 1 communicates with the exhaust port 8 in a state where the molds 1 and 2 are closed.

The groove 9 has a width of 2 to 8 mm and a depth of 5 to 5 mm.
20 mm, the angle [theta] forming a downward gradient is 89 to 10 [deg.], And the entire surface of the upper die 1 is provided at a position 5 to 30 mm from the lower end of the sliding surface between the upper die 1 and the mold frame 3. In addition,
Part of the concave groove 9 may be provided over the cavity surface.

In order to obtain a molded article using the hydraulic inorganic molded article molding apparatus of the present invention 1, a drainer iron plate 6 is attached to the cavity surface of the upper mold 1 and then lowered by a pressing mechanism (not shown) to lower the mold. 2, the cavity is formed, and a sufficient amount of the hydraulic inorganic composition to fill the inside of the cavity is injected by using a supply pump from a tank (not shown).

After the hydraulic inorganic composition is pressed into the cavity, the air in the suction hole 5 provided in the upper mold 1 is exhausted by a suction machine (not shown), and the inside of the suction hole 5 is evacuated. Then, surplus water of the hydraulic inorganic composition supplied into the cavity is discharged from a small hole in the draining iron plate 6 through the suction hole 5 and a drain hole (not shown) provided at an appropriate place.

At this time, the water that has entered the gap between the upper mold 1 and the mold frame 3 is stored in the concave groove 9 having a downward gradient toward the inner surface of the upper mold. Thereafter, when compressed air is supplied to the compressed air supply port 7 provided on one side of the mold 3, the water stored in the concave groove 9 communicating with the compressed air supply port 7 is provided on the other side of the form 3. The air is discharged together with the compressed air from the exhaust port.

FIG. 4 is a longitudinal sectional view showing an example of a molding apparatus for a hydraulic inorganic molded article according to the second embodiment of the present invention, and shows a state in which the mold is opened after the completion of molding.

In FIG. 4, 11 is an upper mold as a first mold, 12 is a lower mold as a second mold, 13 is a mold frame, 14 is a hydraulic inorganic molded body, and 15 is an upper mold 11. Provided suction holes, 16 is a draining iron plate, and 19 is a concave groove.

As shown in FIG. 4, the same as the first embodiment of the present invention except that a concave groove 19 communicating with the suction hole 15 is provided on the outer peripheral surface of the upper mold 11 sliding on the mold frame 13. It is.

FIG. 5 shows a state in which the mold of the apparatus for molding a hydraulic inorganic molded article shown in FIG.
9 is a partial cross-sectional view showing a portion 9 in an enlarged manner. As shown in FIG. 5, the concave groove 19 communicates with the suction hole 15 via the discharge hole 18.

The groove 19 has a width of 2 to 8 mm and a depth of 5 mm.
２０20 mm, 5 mm from the lower end of the sliding surface between upper mold 11 and mold frame 13
It is provided around the entire outer periphery of the upper mold 11 at a position of about 30 mm. Note that a part of the concave groove 19 may be provided over the cavity surface. The discharge hole 18 has an inner diameter of 5 to 20 mm.

In order to obtain a molded article using the hydraulic inorganic molded article molding apparatus of the second invention, the hydraulic inorganic composition is pressed into the cavity in the same manner as described in the first invention. By setting the inside of the suction hole 15 in a reduced pressure state, surplus water of the hydraulic inorganic composition supplied into the cavity is discharged in the direction of arrow B.

At this time, the water that has entered the gap between the upper mold 11 and the mold frame 13 flows into the concave groove 19 along the inner surface of the upper mold 11 in the direction of arrow A in FIG. The water that has flowed into the concave groove 19 is sucked into the suction hole 15 through the discharge hole 18 and is discharged in the direction of arrow C in FIG. 5 together with the water discharged in the direction of arrow B in FIG.

FIG. 6 is a longitudinal sectional view showing an example of a molding apparatus for a hydraulic inorganic molded article according to the third aspect of the present invention, and shows a state in which the mold is opened after the completion of molding.

In FIG. 6, reference numeral 21 denotes an upper die which is a first die, 22 denotes a lower die which is a second die, 23 denotes a mold, 24 denotes a hydraulic inorganic molded product, and 25 denotes an upper die 21. Provided suction holes, 26 is a draining iron plate, 28 is a drain hole, and 29 is a concave groove.

As shown in FIG. 6, the mold 23 of the upper mold 21
A concave groove 29 is provided on the outer peripheral surface which slides, and a drain hole 28 having a downward gradient toward the inner surface direction of the upper die 21 and communicating with the cavity is provided below the concave groove 29. Except for this point, the third embodiment is the same as the first embodiment.

FIG. 7 shows the closed state of the mold of the apparatus for molding a hydraulic inorganic molded article of FIG.
9 is a partial cross-sectional view showing a portion 9 in an enlarged manner. As shown in FIG. 7, a drain hole 28 is provided below the concave groove 29,
It communicates with the cavity through a small hole provided in the draining iron plate 26.

The groove 29 has a width of 2 to 8 mm and a depth of 5 mm.
Up to 20 mm, 5 mm from the lower end of the sliding surface between the upper mold 21 and the mold frame 23
It is provided around the entire outer periphery of the upper mold 21 at a position of about 30 mm. Note that a part of the concave groove 29 may be provided over the cavity surface. The drain hole 28 has an inner diameter of 5 to 20 mm.

In order to obtain a molded article using the hydraulic inorganic molded article molding apparatus of the present invention 3, after the hydraulic inorganic composition is pressed into the cavity in the same manner as described in the above-mentioned present invention 1, By setting the inside of the suction hole 25 in a reduced pressure state, surplus water of the hydraulic inorganic composition supplied into the cavity is discharged.

At this time, the water 27 that has entered the gap between the upper mold 21 and the mold frame 23 is stored in the concave groove 29, and further flows out of the discharge hole 28 in the direction of arrow D in FIG. Through a small hole in the iron plate 26, it is sucked into the suction hole 25 and discharged.

[0040]

The molding apparatus for a hydraulic inorganic molded article according to the present invention 1 to 3 is constructed as described above, and is a molding apparatus for sucking excess water in the hydraulic inorganic composition and dewatering it. Even if there is water accumulated in the gap between the upper mold and the mold,
It does not stain the surface of the molded product and impair the appearance.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an example of a molding apparatus for a hydraulic inorganic molded article of the present invention 1, showing a state in which a mold is split.

FIG. 2 shows a state in which the mold of the molding apparatus of FIG. 1 is closed;
It is a fragmentary sectional view which expands and shows the part of a compressed air supply port and a groove.

FIG. 3 shows a state in which the mold of the molding apparatus of FIG. 1 is closed;
It is a partial sectional view which expands and shows the part of an exhaust port and a groove.

FIG. 4 is a longitudinal sectional view showing one example of a molding apparatus for a hydraulic inorganic molded article of the present invention 2, showing a state in which a mold is split.

5 shows a state in which the mold of the molding apparatus of FIG. 4 is closed,
It is a partial sectional view which expands and shows the part of a suction hole and a concave groove.

FIG. 6 is a longitudinal sectional view showing one example of a molding apparatus for a hydraulic inorganic molded article of the present invention 3, showing a state where a mold is split.

7 shows a state in which the mold of the molding apparatus of FIG. 1 is closed,
It is a partial sectional view which expands and shows the part of a drainage hole and a concave groove.

FIG. 8 is a longitudinal sectional view showing an example of a conventional molding apparatus for a hydraulic inorganic molded article, showing a state before molding.

FIG. 9 is a partially cutaway cross-sectional view showing one example of a conventional molding apparatus for hydraulically molded inorganic molded products, showing a state after molding.

[Explanation of symbols]

 1, 11, 21 First mold (upper mold) 2, 12, 22 Second mold (lower mold) 3, 13, 23 Mold 4, 14, 24 Hydraulic inorganic molded body 5, 15, 25 Suction hole 7 Compressed air supply port 8 Exhaust port 9, 19, 29 Groove 28 Drainage hole

Claims (3)

[Claims] The first mold includes a pair of molds that can be opened and closed, and a mold frame that surrounds the outer periphery of the first mold and is slidable in the opening and closing direction of the first mold. In a molding apparatus, a cavity for supplying a hydraulic inorganic composition is formed in a state where the mold and the second mold are closed, and the mold surface of the first mold has at least one suction hole. The compressed air supply port and the exhaust port are provided in the mold, and the outer peripheral surface of the first mold that slides with the mold has a downward gradient toward the inner surface of the first mold, A molding device for a hydraulic inorganic molded product, wherein a concave groove communicating with the compressed air supply port and the exhaust port is provided when the mold is closed. 2. A first mold comprising: a pair of molds which can be opened and closed; and a mold frame which surrounds the outer periphery of the first mold and is slidable in the opening and closing direction of the first mold. In a molding apparatus, a cavity for supplying a hydraulic inorganic composition is formed in a state where the mold and the second mold are closed, and the mold surface of the first mold has at least one suction hole. And of the first type,
A molding device for a hydraulic inorganic molded article, characterized in that a concave groove communicating with the suction hole is provided on an outer peripheral surface that slides on a mold frame. 3. A first mold comprising: a pair of molds capable of being opened and closed; and a mold frame surrounding an outer periphery of the first mold and slidable in the opening and closing direction of the first mold. In a molding apparatus, a cavity for supplying a hydraulic inorganic composition is formed in a state where the mold and the second mold are closed, and the mold surface of the first mold has at least one suction hole. And of the first type,
A concave groove is provided on the outer peripheral surface that slides with the mold, and a drain hole having a downward slope toward the inner surface direction of the first mold and communicating with the cavity is provided below the concave groove. A molding apparatus for a hydraulic inorganic molded article, characterized in that: