JPH03213307A - Manufacture of light-weight tile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The second invention relates to a method for manufacturing lightweight roof tiles.

[Conventional technology] Slate tiles in the form of flat plates have been widely used as conventional cement tiles, but due to their thin thickness, there are complaints that they do not provide a solid window when roofed. In order to solve these problems, so-called thick roof tiles, which have a rich surface undulation, such as Japanese or Western roof tiles, have been formed using cement raw materials.

Because this thick tile is formed into a shape with many surface undulations, it is not suitable for mass production using conventional extrusion molding or dry methods, and generally extrusion pallet molding is used as a molding method.

This extrusion pallet forming is as shown in Fig. 2, by supplying the cement mixed wire material S to a hopper H, and aligning the holes 7) P...P, which will become a mold in the shape of the back of the tile, at the bottom of the hopper H. At the same time, the material S is supplied to the surface of the pallet by gravity, and the barre 7) is transferred in the lateral direction, and the tile surface is shaped by a slipper B provided on the side surface of the tile H in this transfer direction. However, it has the advantage that it shapes the shape of tiles, making it possible to continuously manufacture tiles of considerable thickness.

[Problems with the prior art] However, in the case of the above manufacturing method, the material supplied onto the barrel is compressed and supplied only by the weight of the material deposited above it, so it is later compressed and shaped by a slipper. However, there was a problem in that the density of the shaped body could not be sufficiently increased, resulting in insufficient strength.

Therefore, it is necessary to increase the thickness of the tile to be formed in order to ensure strength against cracking of the tile during construction, thereby increasing the weight of the tile.

[Problems solved by the invention]

In view of the above-mentioned problems, the present invention has been made with the object of providing a method for producing lightweight roof tiles, which is similar to the above-mentioned production method, but can significantly increase the strength of the roof tiles and produce lightweight roof tiles. .

[Technology to solve problems]

That is, the method for manufacturing a lightweight roof tile of the present invention involves arranging pallets that serve as molds for the back side of the tiles in a row, and supplying materials to the pallets while extruding and supplying a cement mixture from a kneading extruder onto the pallets. Transfer at a speed synchronized with the speed, press a slipper that forms the top surface of the tile onto the pallet, pressurize the cement raw material into the pallet, shape the top surface of the tile, and then cut the forming material into lengths of the pallet. It is characterized by being cured and hardened in accordance with conventional methods.

〔Example〕

Next, the present invention will be explained in detail.

FIG. 1 is a side sectional view of an apparatus for carrying out the method of the invention.

The method for producing a lightweight roof tile of the present invention involves arranging paresotots 1, which serve as molds for the back surface of the tiles, in a row, and extruding and feeding a cement mixture S onto the paresotots 1 from a kneading extruder 2. The pallet 1 is transferred at a speed synchronized with the material supply speed, and the slipper 3 that forms the top surface of the tiles is pressed onto the pallet 1, and the cement raw material is pressure-filled into the pallet 1 and the top surface of the tiles is The process consists of shaping, then cutting the forming raw material into pallet lengths using a cutter 4, and then curing and hardening according to a conventional method.

(Function) In this invention, the cement raw material S is supplied from the kneading extruder 2.

Therefore, when the raw material is discharged from the extruder, its density is sufficiently increased and a dense cement matrix can be formed.

Further, since the shaping slipper 3 fills the cement raw material into the pallet and shapes the surface shape of the shaped body, the surface shape can be shaped very well.

After this step, the product is cured at high temperatures and pressures in an autoclave or the like in the same manner as in the past.

〔effect〕

As explained above, this invention is configured so that the cement raw material supplied on the pallet is supplied from a kneading extruder instead of a hopper, so that the structure of the cement mixture can be made extremely dense. As a result, even if the thickness of the tile is reduced, it can still be made with the same strength as conventional tiles, and it becomes possible to manufacture tiles that are lighter in weight by the amount of jade.

Incidentally, when comparing the weights of roof tiles manufactured according to the present invention and tiles manufactured by conventional extrusion pallet molding, which exhibit the same strength, the weight of the tiles manufactured according to the present invention was approximately 60% lighter than that of the conventional tiles. .

[Brief explanation of drawings]

FIG. 1 is a side sectional view of an apparatus for implementing the method of the present invention, and FIG. 2 is a conceptual diagram showing a conventional extrusion pallet forming method. : Hahiki and 9 no

Claims (1)

[Claims] (1) pallets that serve as molds for the back side of the tiles are arranged in a line butt against each other, and while extruding and supplying the cement mixture from a kneading extruder onto the pallets, the pallets are transferred at a speed synchronized with the material supply speed; A slipper that forms the top surface of the tile is pressed onto the pallet, and the cement raw material is pressure-filled into the pallet, and the top surface of the tile is shaped.Then, the forming raw material is cut into lengths of the pallet, and thereafter cured and hardened according to a conventional method. A method for producing lightweight roof tiles characterized by: