JPH06285823A - Manufacture of inorganic product with pattern and device used therefor - Google Patents

Abstract

PURPOSE:To provide a production equipment of inorganic product with pattern, with which continuous operation can be possible and pattern such as marble or the like can be produced and, at the same time, which is compact as a whole. CONSTITUTION:A first, a second and a third main pipes 7, 8 and 9, through which a plurality of colored slurries are run, are connected with the inlet 23a of a stationary mixer 23, the outlet 23b of which is connected with an enclosed type flash mold 26. The flash mold 26 is divided into an inlet side part and a mold part adjacent to the inlet side part, which is formed to be more shallower toward its depth, under the condition that the depth of the mold part is set to be deeper than the shallow part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a patterned inorganic product on which a marble-like pattern is formed and an apparatus used therefor.

[0002]

2. Description of the Related Art Recently, large-sized color-patterned porcelain plates have been attached to inner and outer walls and floors to enhance the aesthetic appearance of buildings.

Such a large-sized colored patterned porcelain plate has been conventionally manufactured by a dry press molding method. That is, a mixed powder of a base material and a coloring material (pigment) is raised and filled in a lower mold for press molding, and this is pressed to form a multicolored porcelain plate. However, according to this method, since both raw materials are composed of particles, only a speckled granite (granite) pattern can be obtained, and a marble-like pattern cannot be obtained.
Moreover, there is a problem that it takes time and effort to fill the mixed powder into the lower die for press molding. The large-sized colored patterned porcelain plate is also manufactured by an extrusion molding method, but in this method as well, as in the dry press molding method, since the raw material is composed of particles, a marble-like pattern is obtained. There was a problem that it could not be done and it took time to work. However,
If a method for producing a patterned inorganic product with a marble-like pattern that can be continuously operated is developed, various marble-like porcelain plates can be efficiently produced.

[0004]

Therefore, the applicant of the present invention has considered an apparatus shown in FIG. 8 as an apparatus for producing a colored patterned porcelain plate capable of continuous operation and having a marble-like pattern. In this device, three pumps 51, 52 and 53 for pumping colored sludge are connected to pipes 54, 55 and 5 respectively.
6, the ends of the pipes 54, 55, and 56 are branched in a U shape, and the opposing portions 54a, 55a, and 56a of the branched U-shaped pipe portions are formed in the molding die 57. In the state of being arranged in the same direction as the longitudinal direction, the outlets of the portions 54a, 55a, 56a are connected to the inlets of the molding die 57 (the molding die 57 has six inlets). , The colored sludge pressure-fed from the respective pumps 51, 52, 53 is made to flow into the forming die 57 through the respective pipes 54, 55, 56, and the inflowing colored sludge is formed substantially inward in the forming die 57. By straightly moving (see the arrow in FIG. 8), 6 streak patterns are formed in the molding die 57 and cast-molded, and then this molded product is demolded and fired to obtain a colored ceramic plate. It is what is molded. According to this device, each pump 51, 52, 53
The colored sludge pumped from the pipes 54, 55, 5
Since it can be injected into the molding die 57 via 6,
Unlike the dry press molding method described above, it does not take time to fill the mixed powder into the lower mold for press molding, and the work can be performed quickly and easily, and each pump 5
There is an advantage that continuous operation is possible by electrically and automatically controlling 1, 52, 53 and the like. However, this device is large-scaled, and in particular, a space on the front side space of the molding die 57 where a U-shaped pipe portion formed at the tip of each pipe 54, 55, 56 can be arranged is required. Therefore, a large installation area is required.

The present invention has been made in view of such circumstances, and it is possible to continuously operate, and moreover, it is possible to form a pattern such as a marble tone, and further, the entire apparatus is a compact patterned inorganic product. The object of the present invention is to provide a method for producing the above and a device used therefor.

[0006]

In order to achieve the above object, the present invention comprises a step of introducing a plurality of colored sludges into a plurality of flow paths, and a step of semi-mixing the introduced colored sludges together. , The step of press-fitting the semi-mixed sludge into the interior from the inlet side of the sealed flat type, and the step of diffusing this colored sludge pressurized into the surroundings while passing through the side of the flat type inlet A step of flowing the sludge in one direction in a flat mold part,
The first gist is the method for producing a patterned inorganic product including the step of molding the sludge that has flowed into the flat mold portion and the step of demolding the molded article. The passage is connected to the inlet of the semi-mixing means, the outlet of the semi-mixing means is connected to a sealed flat mold, the flat mold is divided into an inlet side part and a subsequent mold part, the flat mold inlet side part A second manufacturing apparatus for a patterned inorganic product in which the mold is formed to have a shallow bottom toward the back and the depth of the mold is set deeper than the shallow bottom.
The summary of

[0007]

That is, in the method for producing a patterned inorganic product of the present invention, a plurality of colored sludges introduced into a plurality of flow paths are semi-mixed together to form a streak-like colored pattern on the semi-mixed sludges. Then, the semi-mixed sludge is pressed into the inside of the sealed flat inlet side, and this pressed colored sludge is diffused to the surroundings while passing through the flat inlet side. This diffused sludge is made to flow in one direction in the flat mold part. Therefore, a plurality of stripe-shaped colored patterns are formed in the flat mold portion, and thus, a marble-like pattern or the like is formed on the obtained molded product.
In addition, since the streaky colored pattern is formed along the press-fitting direction when the sludge is press-fitted into the flat mold part, there is reproducibility in directionality and a plurality of colored sludges are semi-mixed. At this time, the pattern shape can be freely changed by changing the amount or the degree of semi-mixing. Moreover,
In the manufacturing apparatus for a patterned inorganic product of the present invention, a plurality of flow paths for flowing a plurality of colored sludges are connected to an inlet of a semi-mixing means, and an outlet of the semi-mixing means is connected to a hermetic flat mold. Therefore, as compared with the conventional example in which each pump and the molding die are connected via each pipe whose tip is branched in a U shape, the entire device is more compact and continuous production is possible. Is possible. In the present invention, semi-mixing does not mean that a plurality of colored sludges are completely mixed to form a uniform color, but are mixed to the extent that a streak pattern is formed by each colored sludge.

Next, the present invention will be described in detail based on examples.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of an apparatus for manufacturing a colored porcelain plate according to the present invention. In the figure, reference numerals 1, 2 and 3 are rotary displacement type uniaxial eccentric screw pumps, and hoppers 4, 5 and 6 are attached to the pumps 1, 2 and 3, respectively. Then, the first colored slurry is supplied to the hopper 4 attached to the first pump 1, flows into the first pump 1, and is pumped from the first pump 1 to the first main pipe 7 by the pump action. Similarly, the second colored sludge is supplied to the hopper 5 attached to the second pump 2, flows into the second pump 2, and then is pumped from the second pump 2 to the second main pipe 8 by the pump action. Similarly, the third colored sludge is supplied to the hopper 6 attached to the third pump 3, flows into the third pump 3, and is pumped from the third pump 3 to the third main pipe 9 by the pump action.

Each of the main pipes 7, 8 and 9 is equipped with a pressure gauge 10, 11, 12 on the upstream side of the middle portion thereof and a flowmeter 13, 14, 15 on the downstream side thereof. Each pressure gauge 10, 11, 12 and each flow meter 1
Bypass valves 16, 17, and 18 are mounted between 3, 14, and 15, respectively. And each bypass valve 16,
17 and 18 are bypass pipes 19, 20 and 21, respectively.
It is connected to the pumps 1, 2, and 3 via. Each of these main pipes 7, 8 and 9 is connected to the inlet of one merge pipe 22, and the outlet of this merge pipe 22 is connected to the inlet 23 a of the static mixer 23.

As shown in FIG. 2, the static mixer 23 has a right side element 3 in a casing 33 of its main body.
A mixing body constructed by mounting three sets of one set of elements 32 consisting of 2a and the left side element 32b is built in. And the outlet 23b of this static mixer 23
Is connected to a central inlet 26a of a hermetically sealed flat mold 26 via a connecting pipe 24 having a pressure gauge 25 attached to an intermediate portion thereof. In FIG. 1, 28 is a first control panel for controlling the first pump 1, 29 is a second control panel for controlling the second pump 2, and 30 is a third control panel for controlling the third pump 3. is there. Reference numeral 31 is a main control panel that receives signals from the flow meters 13, 14, 15 and the pressure gauge 25 and controls the control panels 28, 29, 30 by these signals. This main control panel 31 evenly passes the colored sludge pumped from the pumps 1, 2 and 3 into the flat mold 26 by passing it through the static mixer 23, and when the sludge is pressed into the flat mold 26. By controlling the pressure, and by detecting a pressure increase in the flat mold 26 by a signal from the pressure gauge 25, each bypass valve 16, 17, 1 is detected when this detection signal reaches a constant value.
8 has the function of opening. 27 is a vacuum pump.

The flat mold 26 is made of a water-permeable resin mold, and comprises an upper mold 35 and a lower mold 36, as shown in FIG. As shown in FIGS. 4 and 5, the lower mold 36 includes an inlet side part 37 and a mold part 38, and the inlet side part 37.
The left and right side surfaces 37a are formed in a shape that expands outwardly from the central inlet 26a toward the mold portion 38 side (that is, in a substantially triangular shape in plan view), and the front end central surface 37c is rearward. It is formed on a downward sloping surface that slopes toward the bottom. Further, the inlet side portion 37 has a bottom surface 37b.
Is formed on the inclined surface which is inclined upward from the central inlet 26a toward the mold portion 38 side, and the rear end edge portion of this inclined surface is formed on the shallow flat surface 39. Further, the mold portion 38 is formed in a recess having a substantially quadrangular shape in a plan view, and a front end surface 38a thereof is formed in a downward inclined surface which is inclined toward the rear side. On the other hand, in the upper die 35, a portion corresponding to the die portion 38 of the lower die 36 is formed in the concave portion 35a, and the front end surface 35b of the concave portion 35a is formed in an upward inclined surface that is inclined toward the rear side.

The colored patterned porcelain plate is manufactured, for example, as follows, using the above-mentioned apparatus. That is, first, the first pump 1 pumps the first base sludge to the first main pipe 7, the second pump 2 pumps the second base sludge to the second main pipe 8, and the third pump 3 pumps the third base sludge. The slurry is pumped to the third main pipe 9. The colored sludges pressure-fed from the pumps 1, 2 and 3 are merged by the confluence pipe 22, and then are pressure-injected into the interior from the inlet 23a of the static mixer 23. Next, the colored slurry pressed into the static mixer 23 is semi-mixed in the static mixer to the extent that a streak pattern as shown in FIG. 6 is formed, for example. The streak-mixed mixed sludge thus semi-mixed and streaked is pressure-fed from the outlet 23b of the static mixer 23, and then pressure-fed into the inside from the central inlet 26a of the flat mold 26. The mixed sludge with a streak press-fitted into the flat mold 26 has an inlet side part 3
While flowing into 7 and passing through the inlet side 37, the inlet side 3
That the bottom surface 37b of 7 is gradually shallow, and
Since both the left and right side surfaces 37a of the inlet side portion 37 gradually expand to the outside, as shown in FIG. 7, they spread to the left and right due to resistance as they approach the mold portion 38, and are divided into several streak patterns. After that, when it passes through the flat surface 39 and flows into the mold portion 38, since the mold portion 38 is formed to be deeper and more uniform than the flat surface 39, it moves substantially straight and extends in parallel. Several streak patterns are formed. At the same time, the slurry in the mold portion 38 is pressed against the inner surface of the mold portion 38 by the casting pressure, and the water permeability of the mold portion 38 is utilized to perform pressure dehydration.

On the other hand, when the flat mold 26 is filled with a predetermined amount of sludge and the internal pressure exceeds a certain value, this is transmitted to the main control panel 31 by the detection signal of the pressure gauge 25, and by the control of the main control panel 31. Each bypass valve 16, 17, 18 is opened. As a result, the colored slurry pressed into the main pipes 7, 8, 9 from the pumps 1, 2, 3 is returned to the pumps 1, 2, 3 via the bypass pipes 19, 20, 21. The molded product thus obtained is released from the mold, fired, and then polished to produce the intended colored patterned porcelain plate.

According to the above construction, a marble-like color pattern is formed vividly on the ceramic plate. Moreover, the above color pattern is
Since it is formed along the press-fitting direction when it is press-fitted into the flat mold 26, since the directionality is reproducible, a similar pattern can be formed. Furthermore, the color pattern is set to the following, that is, changing the pumping amount of each colored slurry pumped from each pump 1, 2, 3, making the pumping amount non-uniform, and Adjusting the viscosity, changing the flow rate balance for each color of the colored slurry, changing the degree of semi-mixing in the static mixer, changing the press-fitting pressure and press-fitting speed into the flat mold 26, The pattern shape can be freely changed by changing the position and shape of the central inlet 26a of the flat mold 26 to change the flow of the slurry in the mold portion 38. In addition, the flow rate and pressure of the pumps 1, 2 and 3 and the colored sludge are electrically controlled so that continuous operation is possible and the pattern has some reproducibility.

In the above embodiment, the inlet of the flat mold 26 is provided at the center (that is, the central inlet 26a is provided), but the present invention is not limited to this, and the inlet may be eccentric. .

[0017]

As described above, according to the present invention, a plurality of streak colored patterns can be formed in the flat mold portion, and thus the obtained molded product has a marble tone or the like. A pattern will be formed. Moreover, in the apparatus for producing a patterned inorganic product of the present invention, a plurality of flow paths for flowing a plurality of colored sludges are connected to the inlet of the semi-mixing means, and the outlet of the semi-mixing means is connected to a sealed flat type. Therefore, as compared with the conventional example in which each pump and the molding die are connected via each pipe whose tip portion is branched in a U-shape, the entire apparatus becomes compact, and moreover, Continuous production is possible.

[Brief description of drawings]

FIG. 1 is an explanatory view of an apparatus for manufacturing a colored patterned porcelain plate of the present invention.

FIG. 2 is an explanatory diagram of a static mixer used in the above apparatus.

FIG. 3 is a cross-sectional view of a main part of a flat type used in the above device.

FIG. 4 is a perspective view of a lower mold of the flat mold.

FIG. 5 is a plan view of the lower mold of the flat mold.

FIG. 6 is an explanatory diagram of a streak pattern formed in the static mixer.

FIG. 7 is an explanatory diagram showing a flow of sludge in the flat mold.

FIG. 8 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 1,2,3 Pumps 7,8,9 Main pipe 23 Stationary mixer 23a Inlet 23b Outlet 26 Flat type 26a Central inlet 37 Inlet side part 38 Type part

Claims (5)

[Claims] 1. A step of introducing a plurality of colored sludges into a plurality of flow paths, a step of semi-mixing the introduced colored sludges together, and a semi-blended inlet side of the semi-mixed sludges. And the step of press-fitting the colored slurry into the inside while passing through the inlet side of the flat mold, and then flowing the diffused slurry in one direction in the flat mold part. ,
A method for producing a patterned inorganic product, comprising: a step of molding the sludge that has flowed into the flat mold portion; and a step of demolding the molded product. 2. The method for producing a patterned mineral product according to claim 1, wherein the semi-mixing of the colored slurry is carried out using a static mixer. 3. A polishing process is performed on a molded product.
Alternatively, the method for producing a patterned inorganic product according to 2. 4. A plurality of flow paths for flowing a plurality of colored sludges are connected to an inlet of the semi-mixing means, an outlet of the semi-mixing means is connected to a hermetically sealed flat mold, and the flat mold is connected to an inlet side portion and subsequent ones. It is divided into a mold part, the inlet side part of this flat mold is formed to have a shallow bottom toward the back, and the depth of the mold part is set deeper than the shallow bottom part. Equipment for manufacturing inorganic products. 5. The apparatus for producing a patterned inorganic product according to claim 4, wherein the semi-mixing means is a static mixer.