JPH055776B2 - - Google Patents

Description

Detailed Description of the Invention The present invention uses clay as the main material, and forms a continuous band by continuous extrusion, then dries, glazes, and fires the clay.
This invention relates to a device for obtaining long ceramic plates by cutting them into regular lengths.

Generally, roof tiles and roof tiles are subject to shrinkage, cracking, and deformation during firing, so no equipment for producing long tiles has been available on the market. In other words, continuous manufacturing of elongated building materials using porcelain has not been practiced at all.

The present invention addresses these technical requirements by:
To provide a manufacturing device in which drying, heating, glazing, firing, and cutting are arranged in series and can continuously manufacture long plates having the same physical properties as before in a short time. It is something.

EMBODIMENT OF THE INVENTION Below, one Example of the continuous manufacturing apparatus of the long ceramic plate based on this invention is described in detail using drawings. FIG. 1 is an explanatory diagram showing a typical example of the above device. In the figure, 1 is clay made by mixing several kinds of raw materials, and is supplied to a kneading machine 3 via a belt conveyor 2. In addition, clay 1
is a natural product, and its components differ depending on the region where it is produced, and these features and weaknesses are offset to obtain a specific mixed clay. An example of Clay 1 is potter's stone, feldspar, kaolinite, hallosite, metahalosite, Kibushi clay, Frogme clay, etc., which are crushed and kneaded by adding water. Note that iron may be removed from this clay 1 using a magnet. 4 is a vacuum forming machine that continuously extrudes plates having cross sections as shown in FIGS. 2a and 2b. 5
The conveyor table is composed of one type of conveyor table, for example, a truck 6 or a conveyor 7 as shown in FIGS. 3a and 3b, and has fire resistance so as not to be deformed even at about 1300 degrees Celsius. In addition,
The conveyor is formed into a continuous belt via a link 7a, and is configured to be able to rotate by being wound around a driving wheel and a driven wheel (not shown), and the cart circulates on a rail to be described later. be. Reference numeral 8 denotes a first high-frequency heating machine that dries the continuous body of a predetermined shape sent out from the vacuum forming machine 4 by using low-energy high-frequency waves. In particular, the molded clay 1 contains about 20% water (weight ratio), so if you remove this all at once, it will cause cracks and explosions, and the product will no longer be produced. This is a process to do so. 9 is for drying mainly the surface layer of the continuous body A formed by the tunnel dryer, and 10 is for drying the surface of the elongated body A formed by the secondary high-frequency heating machine in a state where the surface has been dehydrated to some extent. , is a process that more efficiently dehydrates internal moisture. The frequency is dehydration time, clay 1
It varies depending on the type of clay, but the general frequency is microwave, for example 915MHz to 2450MHz, and the synergistic effect with long infrared rays generated from feldspar, quartz, etc. in the clay 1 allows for faster irradiation. Inside,
It dehydrates even the outer layer. In addition, at this time, it is preferable that a wide emission wavelength band can be formed in the composition of the clay 1. 11 is a continuous molded product A using a heating machine
12 is a glazing machine that applies glaze to the decorative surface of the continuous molding band A. Application methods include spraying, rolling, dipping, etc. 13 is a preheater for drying the glaze to some extent,
Normally, it dries to the point where it won't stick to your fingers. 14 is a tunnel furnace configured to gradually heat the continuous compact, sinter it in a temperature range of about 1000 to 1250°C, and then slowly cool it. The time is 3 to 24 hours. The tunnel furnace 14 mainly uses heavy oil, electricity, or gas as fuel, and when firing in a short time, it is necessary to select various conditions based on the material itself. 1
Reference numeral 5 designates a cutter for cutting the continuous molded body A into regular lengths, and a traveling cutter having a diamond blade is preferable. Reference numeral 16 denotes a conveyor for sending the fixed-length long body A cut by the cutter 15 to a packaging line (not shown), and is set at a speed faster than the line speed of the tunnel furnace 14. .
Reference numeral 17 designates a rail to place and guide the continuous molded product A on the trolley 6 from the exit of the vacuum forming machine 4 to the exit of the tunnel furnace 14, and at the same time, the trolley 6 is separated from the continuous molded product A at the exit of the tunnel furnace 14. It has a return line 17a sent to the outlet of the vacuum forming machine 4.

What has been described above is the continuous manufacturing apparatus for long ceramic plates according to the present invention, which is equipped with a control section (not shown) for centrally controlling each device, infrared rays,
Far-infrared rays can also be used for heating. Also,
Reference numeral 18 denotes a device for cutting each device when a defective product occurs in the middle of each device.

As described above, the apparatus for continuously manufacturing long ceramic plates according to the present invention has the great feature of being able to continuously manufacture long ceramic plates. Furthermore, there is an advantage that long ceramic plates can be manufactured in a shorter time by causing the feldspar, etc. of the clay composition to generate heat through the heat source of the heating machine. Furthermore, it has the feature of being able to significantly reduce energy consumption compared to conventional methods.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a typical example of a continuous production device for long ceramic plates according to the present invention, Figs. 2 a and b are perspective views showing an example of a long ceramic plate, and Figs. 3 a and b are carts. , is an explanatory diagram showing an example of a conveyor. 1... Clay, 3... Kneading machine, 4... Vacuum forming machine, 8... High frequency heating machine, 12... Glazing machine, 14
...Tunnel furnace, A...Continuous molded body, A'...Long ceramic plate.

Claims (1)

[Claims] 1. A clay feeder that feeds clay made of pottery stone, feldspar, silica, etc. on a belt conveyor, etc.; a kneader that mixes the supplied clay; a vacuum forming machine attached to the outlet of the kneader; A primary high-frequency heating machine that dries the continuous molded body sent out from the molding machine, a tunnel dryer that dries the continuous molded body sent out from the heating machine, and a main part of the continuous molded body sent out from the tunnel dryer. A second high-frequency heating machine that dries the center part, a heating machine that supplies warm air to the continuous molded body sent out from the high-frequency heating machine, and a glaze applied to the continuous molded body fed from the heating machine. A glazing machine that applies a glaze, a preheater that dries the glaze of a continuous molded body fed from the glazing machine to a certain extent, a tunnel furnace that sequentially fires the continuous molded body that is fed from the preheater, and the tunnel furnace. The vacuum forming machine is constructed by linearly arranging a traveling cutter that cuts the fired continuous molded body sent out from the cutter into a fixed length, and a conveyor that transports the long ceramic plate cut into the fixed length by the cutter. A continuous production device for long ceramic plates, characterized in that a continuous molded body is transported between a tunnel furnace and a tunnel furnace on a continuous rail.