JPH091518A - Manufacture of tile sheet for pc slab - Google Patents

Abstract

PURPOSE: To reduce the number of parts, and consequently simplify production process and enhance production efficiency by a method wherein tiles are retainingly connected into a sheet by forming foamed layer through the thermal foaming of bead-like foaming agent charged in a mold, within which a plurality of the tiles are arranged. CONSTITUTION: After a plurality of tiles 2, 2 and 2 are arranged within a mold 1, bead-like foaming agent is uniformly filled in the mold. After the foaming agent is filled, the top face of the mold 1 is covered by a cover 4 so as to form a space filled with the foaming agent below the cover 4. Under the state just mentioned above, the mold 1 is heated at about 130-140 deg.C for about 20-30min so as to expand the foaming agent in the space in order to form foamed layer 3A. After that, the cover 4 is removed and a plurality of the tiles 2, 2 and 2 retainingly connected with the foamed layer 3A are separated from the mold 1 and then turned upside down so as to obtain a tile sheet, which is the sheet formed by retainingly connecting a plurality of the tiles 2, 2 and 2 with the foamed layer 3A.

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 tile sheet used for manufacturing a PC plate.

[0002]

2. Description of the Related Art Conventionally, a tile sheet used for manufacturing a PC plate is manufactured by the steps shown in FIGS. 7 to 11, and a manufacturing method thereof will be described first with reference to FIG. In, a plurality of concave portions 51 opened on the upper surface side
a, 51a, 51a and a convex part 51b, 51b projecting upward between the concave parts 51a, 51a are used, and the mold 51 has a plurality of pores 51c, 5 penetrating in the vertical direction.
1c is formed, and the vacuum tube 52 is connected to operate an external vacuum device to form each concave portion 51 of the mold 51.
This mold 51 is constructed so that the inside of a can be depressurized.
A vinyl chloride film 54 is laid on the upper surface of the film, and the film 54 is heated and decompressed to reduce the pressure of the film 5.
4 is brought into close contact with the concave portions 51a and the convex portions 51b to form the film 54 in an uneven shape.

FIG. 8 shows the film molded body 54 of the film thus formed, which is released from the mold 51 and turned upside down. That is, in the film molded body 54, the convex portions 54a are formed by the concave portions 51a, and the concave portions 54b are alternately formed by the convex portions 51b. Using the film molded body 54 formed in this way, as shown in FIG. 9, a plurality of tiles 56, 56, 56 are arranged in a form fitting in a form 55 such that the back foot 56a side is the lower surface. The film molding 54 is covered on the tiles 56, 56, 56 arranged in a large number, and the mold 55 is heated to integrate the film molding 54 with the tiles 56, 56. After that, the film molded body 54 and each tile 56,
56 is unmolded in an integrated state, and the temporary joint material 58, 58 is formed in each recess 54b, 54b, 54b of the film molded body 54, respectively.
When the respective 58 are fitted and reversed, a state as shown in FIG. 10 is obtained, and in this state of FIG.
And the tile sheet 57 like this.
As shown in FIG. 11, the soles 56 of the tiles 56 are transported to another factory and float on the base B.
The PC plate is formed by placing concrete with the a side facing upward and placing the concrete from above the tile 56 in this state. After the placed concrete is cured, the temporary joint material 58 and the film are formed. The molded body 54 is peeled off to complete the PC concrete slab.

As described above, conventionally, in order to manufacture the tile sheet 57 for manufacturing the PC plate, it is necessary to form the film molded body 54 in advance, and the temporary joint material 58 and the like depend on the type of the tile 56. A large number of tiles have to be prepared, and particularly, the tile 56 having large unevenness needs to be molded twice, which is very troublesome and there is a problem that the production efficiency of the tile sheet 57 is very poor.

[0005]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above problems of the prior art, and an object thereof is not to provide a manufacturing method capable of efficiently manufacturing a tile sheet. After arranging the tiles in the mold, a bead-like foaming agent is filled on each arranged tile, and the filled foaming agent is heated and foamed in the mold to form a foam layer. This is to make a sheet by holding and connecting the tiles.

[0006]

[Function] A bead-like foaming agent is filled on a tile in which a plurality of tiles are arranged in a mold, and this is heated and foamed in a mold to easily form a foamed layer. A tile sheet can be obtained by holding and connecting, and the production efficiency of the tile sheet can be extremely enhanced.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In order to manufacture the tile sheet of this example, first, a mold 1 as shown in FIG. 1 is prepared. The mold 1 is formed in a frame shape with an open upper surface, and recesses 1a and protrusions 1b are alternately formed inside. 2 are formed in the plurality of recesses 1a.
As shown in, the tiles 2, 2, and 2 are formed so that they can be fitted from above. Each tile 2
In the mold 1, a plurality of tiles 2, 2, 2 are arrayed by being fitted in the recesses 1a with the back foot 2a on the back side facing downward.

After arranging the plurality of tiles 2, 2, 2 in this way, as shown in FIG. 3, the upper surface of each tile 2, 2, 2 is almost uniformly filled with the foaming agent 3. The foaming agent 3 is in the form of beads, and can be swirled and filled on the upper surface of each tile 2 and can be easily filled on the upper surface of the convex portion 1b.

After the foaming agent 3 has been filled in this way, a lid 4 is provided on the upper surface of the mold 1 as shown in FIG. At this time, a space S filled with the foaming agent 3 is formed below the lid 4. In the state of FIG. 4, the mold 1 is heated at a temperature of about 130 ° C. to 140 ° C. for about 20 to 30 minutes. By this heating, the foaming agent 3 is foamed in the space S, and the foaming layer 3A in which the foaming agent 3 is foamed is formed in the space S.

After that, the lid 4 is removed, and the plurality of tiles 2 and 2 held and connected by the foam layer 3A are released from the mold 1 and turned upside down, and the shape shown in the perspective view of FIG. 6 is obtained. It becomes the tile sheet 5. That is, the tile sheet 5 is one in which a plurality of tiles 2 and 2 are connected and held by a foam layer 3A, and a joint portion 3Ab of the foam layer 3A is formed between the tiles 2 and 2, and the foam layer 3A is It is composed of the plurality of joint portions 3Ab and the base portion 3Aa. Such a tile sheet 5 is transferred to another factory, and concrete is cast from above to the upper surface side of each tile 2, that is, the back foot 2a side to form a PC plate.

As described above, in this embodiment, the foaming agent 3 in the form of beads is filled on the tiles 2 arranged in a plurality and the foaming layer 3A is easily foamed to form a foaming layer 3A. The tiles 2, 2 and 2 can be connected and held, and the joint portion 3Ab can be favorably formed between the tiles 2 and 2. This simplifies the process, and the provisional joint material 58 or the like as in the conventional case can be obtained. It is not necessary, and the number of parts is reduced, and the cost can be significantly reduced.

[0012]

According to the present invention, after arranging a plurality of tiles in a mold, a bead-like foaming agent is filled on each arranged tile, and the filled foaming agent is heated and foamed in the mold to foam. By forming a layer and holding and connecting the plurality of tiles by the foam layer to form a sheet, the number of parts can be reduced and the production process can be simplified as compared with the conventional production method, and the production efficiency is extremely improved. In addition, there is an effect that the cost of the product can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a mold for manufacturing a tile sheet.

FIG. 2 is a cross-sectional configuration diagram showing a state in which a plurality of tiles are arranged in a mold.

FIG. 3 is a cross-sectional configuration diagram in which a foaming agent is filled on a tile in which a plurality of tiles are arranged.

FIG. 4 is a cross-sectional configuration diagram showing a state in which the upper portion is covered with a lid.

FIG. 5 is a cross-sectional configuration diagram showing a state in which a foaming agent is foamed to form a foam layer.

FIG. 6 is a perspective configuration diagram of a tile sheet manufactured by demolding from a mold.

FIG. 7 is a cross-sectional view of a mold for molding a film, showing a conventional manufacturing method.

FIG. 8 is a cross-sectional view of a formed film molded body.

FIG. 9 is a cross-sectional configuration diagram showing a state in which a film molded body is covered on the upper surface on which a plurality of tiles are arranged.

FIG. 10 is a perspective view of a tile sheet having a temporary joint material fitted therein.

FIG. 11 is a cross-sectional configuration diagram showing a state in which a tile sheet is placed on a base.

[Explanation of symbols]

 1 type 1a concave part 1b convex part 2 tile 2a back foot 3 foaming agent 4 lid 3A foam layer 3Aa base part 3Ab joint part 5 tile sheet

Claims (1)

[Claims] 1. A method of manufacturing a tile sheet in which a plurality of tiles are integrated into a sheet shape, wherein the plurality of tiles are arranged in a mold, and a bead-like foaming agent is placed on each arranged tile. P is characterized by filling and foaming the filled foaming agent in a mold by heating to form a foam layer, and holding and connecting the plurality of tiles by the foam layer to form a sheet.
A method for manufacturing a C-plate tile sheet.