JPH0773846B2 - Cement product patterning method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for patterning a cement product, and more particularly to a method for patterning a cement product in a so-called pallet extrusion method.

[Conventional technology]

2. Description of the Related Art Conventionally, an inorganic building material in which a roofing material, a building board material and the like are molded from a fiber reinforced cement raw material has been very widely used.

When these building materials are used as exterior materials, the surface may be provided with an uneven pattern due to design requirements.

By the way, as a means for producing these inorganic building materials, a pallet that also serves as a lower mold for molding the back surface of a plate-like cement product is connected in series, and a cement kneaded product is supplied onto the pallet row to obtain the surface shape of the plate-like cement product. Roll and, the pallet extrusion method of shaping by pressing the slipper is known, in the case of this manufacturing method, the uneven surface pattern of the molded product is formed by pressing the slipper formed on the back surface unevenly. To do.

[Problems of conventional technology]

However, in the case of this manufacturing method, the unevenness of the surface of the molded product is only a linear uneven pattern along the flow direction of the pallet, and it is possible to provide a pattern that is intermittent or at random in the flow direction. However, there was a problem that the pattern had to be monotonous.

[Problems to be Solved by the Invention]

In view of the above problems, the present invention provides a method for patterning a cement product, which can easily provide an uneven pattern that is intermittent or uneven in the at random direction in the pallet extrusion molding method in the flow direction of the manufacturing process. It was done for the purpose.

[Technology that has solved the problem]

That is, the method for patterning a cement product of the present invention is such that a pallet also serving as a lower mold for molding the back surface of a plate-like cement product is connected in series, and a cement kneaded product is supplied onto the pallet row,
Roll and the surface shape of the plate-like cement product, in the pallet extrusion method of shaping by pressing the slipper, a plurality of wide slits along the flow direction of the pallet in the slipper are formed in parallel in the width direction, A block body is slidably fitted in the slits in the vertical direction, and each block body is slid vertically in an at random manner with the cross-sectional area of the slipper being always constant, and a molded product is formed on the lower surface of the block body. The feature is that an uneven pattern is added to the surface.

〔Example〕

 Examples of the present invention will be described below.

FIG. 1 is a side view of the apparatus for carrying out the method of the present invention, FIG. 2 is a perspective view of an essential part of the embodiment, and FIG. 3 is a sectional view of the essential part of the embodiment.

According to the method for patterning a cement product of the present invention, a pallet 1 ... 1 also serving as a lower mold for molding the back surface of a plate-like cement product is connected in series, and the pallet 1 ... In the pallet extrusion molding method in which the surface shape of the plate-shaped cement product is shaped by pressing the roll 3 and the slipper 4 in the pallet extrusion method as shown in FIGS. 2 and 3. Flow direction (arrow X)
5, a plurality of wide slits 5 ... 5 are formed parallel to the width direction, and the block bodies 6 ... 6 are slidably fitted in the slits 5 ... 5 so as to be slidable in the vertical direction.
Is slid up and down in an at random manner with the cross-sectional area of the slipper always being constant, and an uneven pattern G'is formed on the surface of the molded product G on the lower surface of the block bodies 6 ... .

In the above, each block body 6 ... 6 can be slidably driven by a drive device 6A ... 6A such as a solenoid or a piston cylinder, and the drive device 6A ... 6A is controlled by the control device 6B so as to satisfy the above condition. Vertical drive control is performed in an at random manner.

In this control, the state where the cross-sectional area of the slipper 4 is always constant means that, for example, when one block body 6 projects from the lower surface of the slipper 4 and the cross-sectional area of the slipper 4 increases by Δd, only this Δd Other block body 6
6 is drawn into the slit 5 and the mutual block bodies 6 ... 6 are controlled to appear and disappear so that the subtraction becomes zero.

[Action]

According to the method of the present invention, irregularities are formed on the surface of the molded product by the block bodies 6 ...

In this case, a concave pattern is formed on the surface of the product G at the portion where the block body 6 projects, and a convex pattern is formed at the portion where the block body 6 is pulled in because the material remains in the slit 5 so as to rise.

Therefore, an at random irregular pattern which is intermittent in the flow direction and whose irregularities are not constant is formed.

Moreover, since the vertical control of the block bodies 6 ... 6 is controlled so that the cross-sectional area is always constant, the cross-sectional area of the cement material side to be compressed is also constant, and the material stays or becomes insufficient due to compression by the slippers. There is nothing to do.

〔effect〕

As described above, according to the present invention, even though a molded product is shaped by a series of flow operations, a complicated uneven pattern having no continuity is formed on the surface of the molded product, which is a product rich in surface design. Can be molded with only one slipper.

Further, since the slipper used in the present invention only needs to be replaced with the slipper of the conventional device, there is an effect that the implementation becomes easy.

[Brief description of drawings]

FIG. 1 is a side view of the apparatus for carrying out the method of the present invention, FIG. 2 is a perspective view of an essential part of the embodiment, and FIG. 3 is a sectional view of the essential part of the embodiment.

Claims (1)

[Claims] 1. A pallet, which also serves as a lower mold for molding the back surface of a plate-like cement product, is connected in series, a cement kneaded product is supplied onto the pallet row, and a surface shape of the plate-like cement product is rolled. In the pallet extrusion molding method of shaping by pressing the slippers, a plurality of wide slits along the pallet flow direction are formed in the slippers in parallel to the width direction, and the block body can be slid vertically in the slits. And slide each block body up and down in an at random manner with the cross-sectional area of the slipper always constant,
A method for patterning a cement product, characterized in that an uneven pattern is formed on the surface of a molded product on the lower surface of a block body.