JPH0462004A - Apparatus for manufacturing body by dry blend - Google Patents

Abstract

PURPOSE:To easily meet the needs for producing various kinds of body in small quantities by storing reference blend powdered materials manufactured in advance in tanks, discharging a fixed amount of the stored materials at a time from the tanks, adding powdered materials of a pigment thereto, and blending both the powdered materials with a dry mixer. CONSTITUTION:Upon automatic measurement of reference blend powdered materials stored in tanks 14 by means of a measuring conveyer 58, said powdered materials are automatically introduced into a mixer 65 by a first conveying and charging means. Provision are made of second tanks 16, 18, in which powdered materials of different kinds from the reference blend powdered materials are store, and a second measuring conveyer for measuring the powdered materials shot out of the second tanks 16, 18. The powdered materials of pigments, which are used in relatively large quantities, are stored in the second tanks 16, 18 and measured by the second measuring conveyer. Accordingly, the discharge and measurement of the reference blend powdered materials and the discharge and measurement of the powdered materials of pigments, which are used in relatively large quantities, can be done at the same time, and both the powdered materials can be simultaneously charged into the mixer. Therefore, in the case where two or more kinds of pigments are used, body of a desired color can be obtained only by additionally adding different kinds of pigments which are only used in very small quantities.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for producing clay for ceramics, and more particularly to an apparatus for producing clay by dry mixing various powders.

(Prior Art) Ceramic products, such as ceramic tiles, are generally manufactured by dry press molding raw clay to form a molded body into a predetermined shape, which is then dried and fired.

This raw material clay has conventionally been produced by wet-pulverizing and mixing pre-crushed various raw materials and pigments with water in a ball mill, and then drying and granulating the mixture with a spray dryer.

(Problem to be solved by the invention) However, when using this method, ball mill,
Due to the large size and large capacity of equipment such as spray dryers, it is necessary to produce a large amount of clay at one time, and therefore it is suitable for cases where it is necessary to produce a wide variety of clay in small quantities with different colors. There was a problem that was difficult.

Furthermore, when clay is manufactured in this manner, a large tank is required to accommodate each color, which poses the problem of occupying a large space.

Generally, in the case of wet pulverization mixing using a ball mill etc. and dry granulation using a spray dryer, the obtained clay is a super-granulated mixture of fine pigment particles and clay particles constituting the matrix. Because of this, the pigment particles are dispersed even inside each granule, so when tiles, etc. are manufactured using this, the color of the product does not change as if it were painted on the surface. There was a problem with the color being shallow.

Means for Solving Problem 1) The apparatus of the present invention was devised to solve such problems, and its gist is (a) a mixer for dry mixing multiple types of powder; (El) a tank that accommodates a reference blended powder in which various raw materials are blended in predetermined ratios, (c) a weighing conveyor that weighs the reference blended powder dropped from the tank, and (d) the weigher. a first conveyance/input means for conveying and charging a certain amount of reference blended powder measured by a conveyor to the mixer; and a second conveyance/input means for conveying an amount corresponding to the predetermined amount and inputting the same into the mixer.

(Operation and Effects of the Invention) In the device of the present invention, a standard blended powder in which various raw materials are mixed in a predetermined ratio is stored in a tank, and the reference blended powder is transferred from this tank onto a weighing conveyor. will be dropped on. The dropped reference blend powder is measured by a measuring conveyor, and when the amount reaches a certain amount, it is fed into the upper mixer conveyed by the first conveying and feeding means including the measuring conveyor.

The standard blend powder is measured using a weighing conveyor.

For example, this can be done by supporting the entire weighing conveyor with a support via a load cell and measuring the load applied to the load cell.

On the other hand, a predetermined amount of pigment powder prepared separately is conveyed to the mixer by a second conveyance and input means, and then the reference mixture powder and the pigment powder are dry mixed inside the mixer. Then, the final clay for ceramics is made.

Incidentally, the second conveyance/input means can also serve as part or all of the first conveyance/input.

In this way, the apparatus of the present invention manufactures a standard blended powder in advance, stores it in a tank, cuts out a certain amount from the tank, adds pigment powder to it, and mixes it with a dry mixer. It is designed to produce clay.

According to the apparatus of the present invention, clay of various colors can be easily obtained by simply adding and mixing various pigment powders to the standard mixed powder, and a wide variety of products can be produced.

It can easily meet the needs of small quantity production.

In addition, in the apparatus of the present invention, at least one large-capacity tank that accommodates the standard mixed powder is sufficient, and there is no need for a large number of tanks to accommodate clay for each color as in the past. .

Therefore, the space occupied by the tank is also reduced, allowing for effective use of narrow spaces.

The apparatus of the present invention is for dry mixing a reference blend powder and a pigment powder. Therefore, by appropriately selecting a mixer, it is possible to form a mold in which the surface of the granule of the base particles is coated with pigment particles. You can get soil. For example, when a tile is press-molded using such clay, when the granules are crushed by the press, the internal color appears on the surface, resulting in a tile with a deep and soft surface color. can be obtained.

The apparatus of the present invention automatically weighs the reference blended powder contained in the tank using the weighing conveyor, and then automatically transports the reference powder into the mixer using the first conveyance/input means. Therefore, the clay can be produced automatically and continuously.

In the present invention, a second tank that accommodates a different type of powder from the reference mixed powder and a second weighing conveyor that weighs the powder dropped from the second tank are provided, and a comparison is made in the second tank. It is possible to accommodate a pigment powder to be used in a desired quantity and to meter it by means of a second metering conveyor.

In this way, the reference blend powder can be cut out and weighed, and the pigment powder used in a relatively large amount can be cut out and weighed at the same time, and then put into the mixer. Therefore, when two or more types of pigments are used, it is convenient that a clay of a desired color can be obtained by separately adding only a very small amount of different types of pigments. Also, if you are adding a very small amount of pigment, you can measure it out in advance and tear the bag and pour in the entire contents when necessary, so that there is no need to measure it when adding the pigment. It's convenient.

(Example) Next, an example in which the present invention is applied to an offshore manufacturing apparatus for ceramic tiles will be described in detail based on the drawings.

In FIGS. 1 to 4, 10 is a frame, and this frame 10 supports a plurality of storage tanks (nine in this case). Six of the nine storage tanks are storage tanks 14 for reference blend powder, and the remaining three are storage tanks 16 for black pigment, storage tank 18 for white pigment, and storage tank 20 for feldspar. be. Among these tanks, the width of the storage tanks 16 and 18 for black and white pigments is set to half the width of the other storage tanks, and in this example, these nine tanks are arranged in two spaces within a rectangular space. arranged in columns.

The standard mixed powder stored in the storage tank 14 is made by mixing various raw materials such as feldspar and clay in a predetermined ratio and granulating it to a predetermined particle size. The input numbers are accommodated using six belt conveyors 21, 22, 24, 26, 28, and 30, numbered first to sixth.

In other words, the standard blended powder, which is pre-blended and granulated outside the device, is
First, it is mounted on the first belt conveyor 21 at a height near the floor surface. This first belt conveyor 21 is provided in an obliquely inclined state, and its starting end portion is housed in a recess 32 formed in the floor surface. A chute 34 having an opening height equal to the floor surface is provided above the starting end side of the first belt conveyor 21.
4, the reference blend powder is loaded onto the first belt conveyor 21.

The reference mixture powder loaded on the first belt conveyor 21 through the chute 34 is conveyed diagonally upward by the first belt conveyor 21, and from the end thereof, the powder is transferred to the second belt conveyor 21 horizontally disposed at an intermediate height position of the frame IO. It is transferred to the belt conveyor 22. The reference blended powder transferred to the second belt conveyor 22 is conveyed a predetermined distance in the horizontal direction by this conveyor 22 and transferred to the third belt conveyor 24.

The third belt conveyor 24, like the first belt conveyor 21, is provided in an obliquely inclined state. This third belt conveyor 24 is connected to the second belt conveyor 22.
The transferred standard blend powder is again conveyed diagonally upward,
Fourth belt conveyor 2 arranged horizontally on frame lo
Transfer the reference blend powder to 6.

As is clear from FIG. 2, this fourth belt conveyor 26 is arranged in a direction perpendicular to the arrangement direction of the storage tanks. On the other hand, below the fourth belt conveyor 26, fifth and sixth belt conveyors 28, 30 are arranged horizontally so as to extend above the storage tanks in each row. Then, the standard adjustment powder transferred to the fourth belt conveyor 26 is conveyed by the conveyor 26 in a direction perpendicular to the arrangement direction of the storage tanks, and the fifth , a sixth belt conveyor 28.30. Further, the reference mixture powder distributed to the fifth and sixth belt conveyors 28.30 is conveyed by these conveyors 28.30 in the direction in which the storage tanks are arranged, and is transferred to each storage tank 14 by each corresponding circuit breaker 38. They are dropped and put into each storage tank 14 as appropriate.

On the other hand, the black and white pigments stored in the storage tanks 16 and 18 are in powder form and serve as base pigments when coloring the standard mixture powder, and are selectively and in relatively large amounts mixed into the standard mixture powder. The packet elevators 40, 42 are used to charge and accommodate each storage tank 16, 18. In addition, the feldspar stored in the storage tank 20 is for false stone spots that make the product surface shine.
The feldspar has a larger particle size than the feldspar mixed into the standard blended powder, and is charged and stored in the storage tank 20 using the packet elevator 44.

That is, on the side of each storage tank 16, 18, 20 (7) lr, there are packet elevators 40, 42.

44 are arranged so as to extend from near the spherical surface to above the frame 10 (see Figure 883). Furthermore, hoppers 46, 48 and shooters 50 are provided at the lower ends of the packet elevators 40, 42, 44, respectively. When the black pigment, white pigment, and feldspar for false stone spots are put into the hoppers 46 and 48 and the chute 50, they are transferred to the corresponding packet elevators 40 and 50.
．． At 42.44, it is transported above the frame IO,
storage tank 1B through shooter 52,
It will be supplied and put in at 18.20. In addition, 54 in FIG. 3 is a hoist for conveying the feldspar.

There is a second outlet at the lower end of the storage tank 14 for the reference blended powder and the storage tank 20 for feldspar.
As shown in the figure, belt feeders 56 are arranged respectively. These belt feeders 56 are for carrying out the contents in the corresponding storage tanks 14 and 20 by their rotational movement, and as shown in FIG. It is being extended. And these belt feeders 5
6 throws the contents carried out from the corresponding storage tanks 14 and 20, that is, the reference blend powder and the feldspar for false stone spots, into the weighing conveyor 58 according to the rotation thereof.

As shown in detail in FIG. 5, the weighing conveyor 58 has a structure in which a conveyor frame 59 holding the belt conveyor is supported by a column 61 via a load cell 60, and Load cells 60 can weigh the loaded items. Here, when the weight of the load on the weighing conveyor 58 reaches a predetermined weight, the belt feeder 56 is stopped and the weighing conveyor 58 is operated, and the load, that is, the reference blend powder and the feldspar for false stone spotting, is removed. , the seventh belt conveyor 6 at the end in the conveying direction as shown in FIG.
It is scheduled to be transferred to 2.

The seventh belt conveyor 62 conveys the standard blended powder (including feldspar for false stone spots) transferred from the weighing conveyor 58 for a predetermined distance in the horizontal direction, and transports the reference blended powder from its terminal end to the eighth belt conveyor. Transferred to 64th. The eighth belt conveyor 64 is for conveying the standard mixed powder obliquely upward to a height almost equal to the opening height of the mixer 65, as shown in FIG. The reference blend powder is transferred from the end to the ninth belt conveyor 66 as shown in FIG. The ninth belt conveyor 66 conveys the reference blend powder transferred from the eighth belt conveyor 64 to its terminal end, and from the terminal end to the mixer supply chute 6.
Step 8: In other words, the reference blend powder is put into the mixer 65.

As shown in FIG. 4, the ninth belt conveyor 66 is arranged with a gentle slope where the terminal end is slightly higher than the starting end. In this example, the weighing conveyor 5
8, @7th, 8th, 9th belt conveyor 62.64.6
6 and the like constitute the first conveyance/input means.

On the other hand, the strain tank 16 for the black and white pigments.
A belt feeder 7 which is longer than the belt feeder 56 is installed at the lower end of the discharge port 18 as shown in Fig. 1M42.
0 is set. At the ends of these belt feeders 70 in the conveying direction, there are double hoppers 72 and 74, respectively.
The belt feeder 70 extends upward from each tank 16.18, and the black and white pigments are fed into the hoppers 72.74, respectively.

As shown in FIG. 1, these hoppers 72 and 74 are each integrally equipped with a small belt feeder 76 at the lower end thereof, and are supported by a frame 80 via a load cell 78. And this makes each hopper 72.74
The weight of the black and white pigments put into the load cell 7
8, and the metered pigment is conveyed from the hoppers 72, 74 by a belt feeder 76. As is clear from this, in this example, each hopper 72, 74, a corresponding belt feeder 76, and a load cell 78 constitute a second weighing conveyor.

A cup conveyor 82 is arranged below the terminal end of each belt feeder 76. This cup conveyor 82
, which transports the pigment dropped and housed in the cup 84 from the belt feeder 76 to the ninth belt conveyor 66, from a lower horizontal part arranged along the floor and one end of this lower horizontal part. A rising part that rises vertically,
It consists of an upper horizontal part that extends horizontally from this rising part to above the ninth belt conveyor 66. As is clear from FIG. 1 and FIG. 882, the cono cup conveyor 82 transfers the black or white pigment charged into the cup 84 at its lower horizontal portion to the ninth belt conveyor 66 along the rising portion and upper horizontal portion. The cup 84 is then inverted and the pigment contained therein is transferred to the ninth belt conveyor 66.

The black and white pigments transferred to the belt conveyor 66 in FIG. 9 are fed into the mixer 65 from the mixer supply chute 68 in accordance with the rotation of the ninth conveyor 66, similarly to the reference blend powder.

Further, the pigment powder for coloring the reference blend powder is transferred to the cup 84 of the cup conveyor 82, as will be described later.
In this example, the powder is manually fed into the lower horizontal section, and, like the black and white pigments, is fed into the mixer 65 via the ninth belt conveyor 66. In this example, the cup conveyor 82. The ninth belt conveyor 66 and the like constitute a second conveyance/input means.

The mixer 65 into which the base pigment, the coloring pigment, the reference mixture powder, and the feldspar for false stone spots are fed is supported by a frame 86 as shown in FIGS. 1 and 4. It is rotatably supported by the wall 88 via a shaft 90. The mixer 12 dry-mixes the reference blend powder and the like introduced above by rotation around the shaft 90 and stirring action of the materials inside the drum around the shaft perpendicular to the shaft 90.

Here, a hopper 92 is disposed below the mixer 65, and the granules, that is, the clay for tiles, which have been dry mixed in the mixer 65, are dropped into the hopper 92 and thrown into the hopper 92. . The clay put into the hopper 92 is transferred to the discharge conveyor 9 as shown in FIG.
4, it is transported to a sub-hopper 96 on the press molding machine side.

Next, the operation of the apparatus of this example will be explained.

First, in a state where the standard blend powder, black pigment, white pigment, and feldspar for false stone spots are stored in each strain tank 14, 16, 18, 20, strain tank 1
The belt feeder 56 of No. 4 is operated, and the reference blend powder stored in the strain tank 14 is transferred to the weighing conveyor 58.
It will be carried out and loaded into the When it is confirmed by the load cell 60 of the weighing conveyor 58 that the loaded amount has reached the scheduled amount, the belt feeders 56 of the strain tanks 14 are stopped and the belt conveyor of the weighing conveyor 58 is activated. By the operation of this belt conveyor, the load (reference blend powder) on the weighing conveyor 58 is transferred to the seventh belt conveyor 62, and from the seventh belt conveyor 62 via the eighth and ninth belt conveyors 64, 66, the mixer 65 is transferred. A transport order is issued.

In addition, when the transporting and charging operation of the standard blend powder is completed,
The belt feeder 56 of the storage tank 20 is activated and a preset amount of feldspar is weighed on the weighing conveyor 58, as with the reference blend powder. Then, as in the case of the reference mixed powder, the feldspar weighed by the weighing conveyor 58 is conveyed and thrown into the mixer 65 via the belt conveyors 62, 64, 66 in sequence. In addition, after performing the measurement operation of the reference blend powder, the operation of weighing the feldspar is performed successively, and after the re-weighing operation is completed, the reference blend powder and the feldspar are simultaneously conveyed and thrown into the mixer 65. You can also.

On the other hand, in parallel with, or before or after the measuring and transporting operation of the reference blend powder and feldspar, black pigment or white pigment and coloring pigment are transported and charged into the mixer 65. That is, one of the belt feeders 70 of the strake tank 16 or 18 is activated, and the hopper 72 or 74 is activated.
One of these base pigments, black or white, is charged and stored. When the load cell 78 detects that the weight of the base pigment charged into the hopper 72.74 has reached the predetermined amount, the operation of the belt feeder 70 is stopped, the belt feeder 76 is activated, and the hopper 72.74 The base pigment inside falls and is accommodated in the cup 84 of the cup conveyor 82. Around this time, a preset amount of coloring pigment is placed in the cup 84 according to the weight of the reference blend powder. It is convenient if the coloring pigment is packaged in bags in the amount to be used in advance, and the bag is torn open and the entire contents are poured into the cup 84 when needed.

When the base pigment and coloring pigment are stored in the cup 84, they are transferred to the ninth belt conveyor 66 according to the operation of the cup conveyor 82, and are transferred from the mixer supply chute 68 to the mixer according to the operation of the ninth belt conveyor 66. 65.

When the reference blend powder, feldspar, black or white base pigment, and coloring pigment are all put into the mixer 65, the mixer 65 is operated and the mixing action disperses and mixes them. As a result, a clay for ceramic tiles consisting of feldspar, a base pigment, and a coloring pigment is obtained.

Incidentally, feldspar and clay were mixed and granulated at a ratio of 60:40 and stored in a storage tank 14 containing standard mixture powder, and 500 kg of the standard mixture powder was extracted from this storage tank 14.
While cutting out the feldspar for false stone spots, store it in a storage tank 20.
Then cut out 65 kg of black base pigment from Strake Tank 16 or 18 or cut out 10 kg of white base pigment, add 2 kg of beige coloring pigment to these, and mix them into mixer 6.
By dry mixing in Step 5, approximately 600 kg of clay having a beige granule surface can be produced.

The plastic material obtained by the mixing action of the mixer 65 is dropped into a hopper 92 and stored therein, and then fed into a sub-hopper 96 on the press-molding machine side by a discharge conveyor 94, and transported from the sub-hopper 96 to the press-molding machine. Then, the tile is press-molded into a predetermined tile shape. This press-molded product is then fired to produce a ceramic tile with a color corresponding to the coloring pigment.

In this manner, the apparatus of this example transfers the reference blend powder, which is prepared by mixing and granulating various raw materials at predetermined ratios, and the feldspar for false stone spots to the storage tank 1 by the corresponding weighing conveyor 58.
4.20, the required amount is cut out from the storage tank 16.18, while the black or white base pigment used in a relatively large amount is cut out from the storage tank 16.18 in the required amount by the second weighing conveyor, and the coloring pigment is added to them in a predetermined ratio. By adding the clay and dry mixing it in a mixer 65, clay for ceramic tiles with a color corresponding to the coloring pigment is manufactured.For this reason, the coloring pigment used in very small amounts is changed. Tiles of different colors can be easily manufactured by simply using this method, and it can easily respond to high-mix, low-volume production.

The mixer 65 uses dry mixing to mix the raw materials, and the fact that changing the clay can be done in a short time is also suitable for high-mix, low-volume production.

In addition, in the device of this example, only the storage tank 14 for the reference blended powder needs to have a large capacity as a whole, so the area occupied by the storage tank as a whole is relatively small, and the space can be used effectively. can.

Furthermore, since the clay finally obtained by the apparatus of this example is one in which the pigment is coated on the surface of the granules (standard blended powder), when the granules are crushed by press molding, the clay is The color of the base material inside the granules appears on the surface, giving the final ceramic tile a deep and soft surface color.

Although the embodiments of the present invention have been described in detail above, the present invention can also be configured in other forms.

For example, the tank for accommodating the reference blended powder may be composed of only one large-capacity tank. In addition, in the previous example, white and black pigments, which are used in relatively large amounts, are automatically measured by a measuring conveyor, but like the coloring pigments in the previous example, they can be measured manually without using an automatic measuring device. It may be added.

Note that these white and black pigments can also be used as they are as coloring pigments.

Further, in the previous example, a case was described in which the present invention was applied to a clay manufacturing device for ceramic tiles, but the present invention can also be applied to other clay manufacturing devices, etc., as long as the present invention does not depart from the gist thereof. It goes without saying that the present invention can be implemented with various modifications based on the knowledge of those skilled in the art.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front explanatory view of a clay manufacturing apparatus which is an embodiment of the present invention, FIG. 2 is a partially cutaway plan view, and FIG. 3 is a partially cutaway left side explanatory view. FIG. 4 is a partially cutaway explanatory view of the right side, and FIG. 5 is an enlarged perspective view showing the main part of the measuring conveyor for reference blended powder of the same device. 14: Storage tank for standard formulation powder 16: Strain tank for black pigment 18: Storage tank for white complexion 20: Storage tank for feldspar 56. 70, 76: Belt feeder 58: Measuring conveyor 60, 78: Load cell 62. 64, 66: Belt conveyor 65: Mixer 68: Mixer supply chute 72.74: Hopper 82 Two-cup conveyor Fig. 3

Claims (3)

[Claims] (1) A mixer that dry mixes multiple types of powder, a tank that accommodates the standard blended powder in which various raw materials are mixed in predetermined proportions, and a meter that weighs the reference blended powder that is dropped from the tank. a measuring conveyor; a first conveying/inputting means for conveying and inputting a certain amount of the reference blended powder measured by the weighing conveyor into the mixer; and a pigment powder prepared separately from the reference blended powder. a second conveyance/input means for conveying an amount corresponding to the measured fixed amount and inputting the same into the mixer; an apparatus for producing clay by dry mixing. (2) Claim characterized in that it includes a second tank that accommodates a different type of powder from the reference mixed powder, and a second weighing conveyor that weighs the powder dropped from the second tank. 1
) A device for producing clay by dry mixing described in . (3) Production of clay by dry mixing according to claim (2), wherein the second tank and the second weighing conveyor are for storing and weighing a different type of pigment from the pigment powder, respectively. Device.