JPH03213306A - Patterning method for cement product - Google Patents

Abstract

PURPOSE:To form easily recessed and projected pattern at random in the flowing direction of manufacturing process by forming a plurality of wide slits running along the flowing direction of pallets are formed in parallel in the width direction on slippers and sliding block bodies up and down at random in the slits in the state that the sectional area of the slippers is slways constant. CONSTITUTION:A plurality of wide slits 5 along the flowing direction (arrow mark X) of pallets 1 are formed in parallel in the width direction on slippers 4, and block bodies 6 are fitted in the slits 5 slidably in the up and down direction. Respective block bodies 6 are slidably driven by a driving device 6A such as a solenoid, a piston cylinder or the like, and also said driving device 6 is controlled in the up and down drive at random to satisfy the given conditions by a control device. For instance, in the case that one block body 6 projects from the lower surface of a slipper 4 and the sectional area of the slipper 4 is increased because of said projection, other block bodies 6 are pushed into the slits 5 by said increased area to offset the discrepancy to zero.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for patterning cement products, and more particularly to a method for patterning cement products using a so-called bullet extrusion method.

[Conventional technology]

BACKGROUND ART Conventionally, inorganic building materials formed from fiber-reinforced cement raw materials have been very widely used for roofing materials, building board materials, and the like.

When these building materials are used as exterior materials, irregularities may be added to the surface due to design requirements.

By the way, as a means of manufacturing these inorganic building materials, a series of bullets that also serve as lower molds for forming the back surface of plate-shaped cement products are connected, and a cement mixture is supplied onto the rows of bullets to determine the surface shape of the plate-shaped cement products. The Tsukret extrusion molding method is known, in which the molded product is shaped by the pressure of a roll and a slipper. In this manufacturing method, the uneven pattern on the surface of the molded product is formed exclusively by the pressure of a slipper whose back surface is made uneven. I can go.

[Problems with the prior art] However, with this manufacturing method, the unevenness on the molded surface is only a linear pattern of unevenness along the flow direction of the bullet, and the unevenness is discontinuous or random in the flow direction. Unable to add a pattern, monotonous unevenness'l
! There was a problem that forced me to go with Mr. A.

[Problem to be solved by the invention]

In view of the above-mentioned problems, the present invention aims to provide a patterning method for cement products that can easily create an uneven pattern that is discontinuous or irregular in the flow direction of the manufacturing process using the bullet extrusion method. It was done for a purpose.

[Technology that led to solving the problem]

That is, the method for patterning a cement product of the present invention involves connecting a series of bullets that also serve as lower molds for forming the back surface of a plate-shaped cement product, supplying a cement mixture onto the row of bullets, and
The surface shape of the plate-shaped cement product is shaped by the pressure of a roll and a slipper (in the bullet extrusion molding method, a plurality of wide slits are formed in the slipper in parallel to the width direction along the flow direction of the bullet, A block body is slidably fitted in the slit so that it can be slid in the vertical direction, and each block body is slid up and down in an at random manner with the cross-sectional area of the slipper always being constant, and the molded product is formed on the bottom surface of the block body. It is characterized by having an uneven pattern on its surface.

[Example〕 The present invention will be explained in detail below.

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

The patterning method for cement products of this invention involves connecting a series of balenototos, which also serve as lower molds for forming the back surface of plate-shaped cement products, and mixing cement from a hopper 2 onto one row of balenototos. In the bullet extrusion molding method, in which a material S is supplied and the surface shape of the plate-shaped cement product is shaped by the pressure of the roll 3 and the slipper 4, the slipper 4 is coated with a parentototo, as shown in FIGS. 2 and 3. A plurality of wide slits 5...5 are formed parallel to the width direction along the flow direction of the bow (arrow
6 is slidably fitted in the vertical direction, and each block body 6...6 is slid up and down in an at random manner with the cross-sectional area of the slipper always being constant, and the block body 6...
・Uneven pattern G on the bottom surface of molded product 0.

It is structured so that the following information is attached.

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 further, this drive device 6A...
6A is vertically controlled by the control device 6B in a random manner so as to satisfy the above-mentioned conditions.

Note that in this control, the state in which the cross-sectional area of the slipper 4 is always constant means that, for example, when one block body 6 protrudes from the bottom surface of the slipper 4 and the cross-sectional area of the slipper 4 increases by Δd due to this protrusion, the cross-sectional area of the slipper 4 increases by Δd. Other block body 6
is drawn into the slit 5, and the mutual appearance and retraction of the block bodies 6...6 is controlled so that the difference becomes zero.

[Effect]

According to the method of the present invention, the surface of the molded product is made uneven by the block bodies 6 . . . 6 which are vertically controlled in an at random manner.

In this case, a concave pattern is formed on the surface of the product 0 in the part where the block body 6 protrudes, and a convex pattern is formed in the part where the block body 6 is retracted because the material remains in the slit 5 in a raised manner.

Therefore, a random uneven pattern is formed which is discontinuous in the flow direction and has irregularities.

In addition, since the vertical control of the block bodies 6...6 is performed so that the cross-sectional area is always constant, the cross-sectional area on the cement material side to be compressed is also constant, and the material does not stagnate due to compression by the slipper. , there may be a shortage.

〔effect〕

As explained above, in this invention, although a molded product is shaped through a series of assembly operations, an irregular pattern with no continuous pattern is formed on the surface of the product, and the surface design pattern is enriched. The product can be molded using only one S'J collar.

Furthermore, the slippers used in the present invention can be easily implemented since they only need to be replaced with the slippers of the conventional device.

[Brief explanation of drawings]

Fig. 1 is a side view of the apparatus for carrying out the method of the present invention, and Fig. 2 is an oblique view of the main parts of the embodiment. J! 3 are sectional views of essential parts of the embodiment. r:aU:I

Claims (1)

[Claims] (1) Connect a series of pallets that also serve as lower molds for forming the back surface of plate-shaped cement products, supply cement mixture onto the row of pallets, and shape the surface shape of the plate-shaped cement products by using rolls and slippers. In a pallet extrusion molding method in which shaping is performed by pressing, a plurality of wide slits are formed in the slipper in parallel to the width direction along the flow direction of the pallet,
A block body is slidably fitted in the slit so that it can be slid in the vertical direction, and each block body is slid up and down in an at random manner with the cross-sectional area of the slipper always being constant, and the molded product is formed on the bottom surface of the block body. A method for adding patterns to cement products, which is characterized by adding an uneven pattern to the surface.