JPH01139209A - Manufacture of coagulating molded product - Google Patents

Abstract

PURPOSE:To eliminate the possibility of forming voids in the inner section of a coagulating molded product, make the inner section not oxidized and hard to absorb water content and manufacture a coagulating molded product of superior hardness and strength by kneading water, aggregates, and a coagulating agent and preventing air from mixing with in respective processes of pouring the material into a mold. CONSTITUTION:The method for manufacturing a coagulating molded product consisting of water, aggregates and a coagulating agent to solidify said materials. The inner section of a kneading device 100 in the vacuum state is vacuumized by a pump 116 after water, aggregates and the coagulating agent are put into said kneading device. The materials are kneaded inside the vacuumized kneading device 100 to form a mixture. Next, a mold 302 is disposed inside a strinking device 304 and then the inside of said strinking device is vacuumized. Said mixture is packed in the mold 302 inside the vacuumized strinking device 304. Then, the mold 302 packed with the mixture is taken outside the strinking device, and the mixture is cured and solidified. The air mixed into the inside of the mixture is removed in the inner section of the vacuumized kneading device and also the air in not mixed newly into the inner section of the mixture.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for producing a solidified molded product.

[Prior art and its problems] Decorative ceramic tiles and bricks are known as conventional solidified molded products. However, since ceramic tiles are molded and fired using clay as the main raw material,
When firing clay in a climbing kettle or tunnel kettle, the product may be deformed, making it impossible to produce tiles of the desired size.Also, there are restrictions on the size of the kettle, making it impossible to produce large tiles. Another problem is that the clay used as a raw material is limited to special clay. Furthermore, similar problems exist with bricks made from clay.

Therefore, in order to solve the above problems, the applicant first
We have invented a coagulant that forms coagulated molded products that can be used for a variety of purposes, such as interior and exterior materials for buildings, in place of ceramic tiles and bricks.

The method of manufacturing solidified molded products using this coagulant is to knead the coagulant with water and aggregate, mold it into the desired shape, and cure it in air, especially in a steam constant temperature. After curing, it is possible to produce a good solidified molded product.

The feature of this method for manufacturing solidified molded products is that there is no need for molding and firing, so the product does not deform, and furthermore, large plate-shaped products can be formed. In addition, the aggregates used are not limited to clay, but also sand, gravel, mine slag, domestic waste, etc.
It has the characteristic that sludge, industrial waste, etc. can also be used. Furthermore, the produced solidified molded product is characterized by its surface being as smooth as tiles or glass, and having strength greater than that of concrete.

To briefly explain an example of the manufacturing method of the above coagulant, 48% each of alumina and calcium, 1% each of magnesium, iron, and titanium, 0.1% each of zirconium and tungsten, and 0.1% each of boron, vanadium, zinc, and strontium are omitted. Knead in the same proportions to make a total of 100%, and make this mixture 14
Manufactured by firing at temperatures between 00 and 1450 degrees.

However, when mixing water, aggregate, and coagulant, if air is mixed in the mixture, the following problems occur. In other words, heat is generated by the flow resistance caused by kneading, and this heat partially evaporates water, creating incomplete solidified parts inside the solidified molded product, and air bubbles remain, which deteriorates the hardness and strength of the solidified molded product. In addition, there is a problem that the resistance during stirring is large.

Furthermore, if air is present during casting, air will be trapped between the mixture and the mold, and air craters will be formed on the surface of the solidified molded product, resulting in a defective product. Furthermore, as described above, the air bubbles create air holes inside the solidified molded product, which oxidizes the inside of the solidified molded product and increases water absorption, which adversely affects the hardness and strength of the solidified molded product.

The present invention maximizes the characteristics of coagulated molded products manufactured using the coagulant invented by the applicant by preventing air from mixing in each step of kneading aggregate, water, and coagulant and pouring it into a mold. The aim is to provide a manufacturing method that brings out the best possible results.

[Means for Solving the Problems] The present invention provides a method for producing a solidified molded product comprising water, aggregate, and a coagulant for solidifying these, comprising: the water, aggregate, and coagulant. After charging the mixture into the kneading device, the inside of the kneading device was evacuated, and the input material was kneaded to form a mixture inside the kneading device in a vacuum state, and the mold was placed inside the casting device. After that, the inside of this casting equipment is evacuated, the mixture is filled into a mold inside the vacuum casting equipment, and the mold filled with the mixture is taken out of the casting equipment and poured The mixture is cured and solidified outside the equipment.

[Operation] By kneading water, aggregate, and coagulant to form a mixture inside the kneading device in a vacuum state, the air mixed inside the mixture is removed to the outside, and Air will not be newly mixed inside the mixture. As a result, since there is little flow resistance during kneading, no heat is generated, so water does not partially evaporate and bubbles are less likely to remain.

Moreover, since the mold is filled with the mixture and molded inside the casting device in a vacuum state, air is not mixed between the mold and the mixture and in the mixture. Therefore, air craters are not formed on the surface of the solidified molded product, and air holes are not formed inside the solidified molded product, so that the inside is not oxidized and water is not easily absorbed.

Example] Hereinafter, one embodiment of the present invention will be described based on the drawings.

The device for producing a solidified molded product formed from a coagulant, water, and aggregate includes a kneading device (100) and a measuring device (2,0).
0), a pouring device (300), and a curing device (not shown).

This manufacturing process is as follows.

Inside the kneading device (100), the coagulant, water, and aggregate are stirred and kneaded to form a mixture. A predetermined amount of the mixture is measured by a measuring device (200) and placed in a pouring device (aOO).
send to Inside the casting device (300), the mixture is filled into a mold 1302) and molded into a desired shape. Thereafter, the mold (302) filled with the mixture is taken out of the casting device (300) and cured in a steam constant temperature curing chamber to solidify the mixture and produce a solidified molded product.

As shown in Fig. 1, two weighing devices (20G) are arranged above the pouring device (300),
Two kneading devices (100) and (10
0) is placed.

Two kneading devices (100) and two measuring devices (200) are installed at the same time in two molds (302).
This is to increase the efficiency of manufacturing solidified molded products by filling them with a mixture. In addition, a kneading device (100) and a measuring device (2
00) is not a particular problem.

As shown in FIG. 1, the kneading device (100) is connected to the pouring device (
Two units are placed on a holding stand (102) placed above the unit (300). The holding member (10B) is attached to this holding base (102
), and a kneading tank (108) is provided inside this holding member (10B).

As shown in Figures 3 to 5, the kneading tank (108)
has a cylindrical shape with a bottom, and has an airtight structure that allows the inside to be kept in a vacuum state.

A tank opening (110) is provided at the top of the kneading tank (108).
) and an air port (112). Tank opening (1
10) serves as an inlet for aggregate, water, and coagulant, and an outlet for the mixture, and an air port (112) serves as an inlet for the aggregate, water, and coagulant, and an outlet for taking out the mixture.
08) Provided to vent the air inside.

As shown in FIG. 7, the air port (112) is connected to a vacuum pump (118) via a flexible vibrator (114).
are connected.

As shown in Fig. 3, the tank opening (110) and the air port (112) are provided with valves (11B) (lda 0), and by tightening the valves (118) and (120), the kneading tank ( 108)- is kept airtight.

The upper end of a rotating shaft (122) passing through the interior of the kneading tank (108) coaxially with the shaft center is rotatably attached to the holding member (10B), and the lower end is attached to the kneading tank (108) so as to be rotatable.
8) has reached near the bottom.

A cutting spatula (124) is attached to the lower end of the rotating shaft (122),
Push down slightly above this cutting blade (124)
2B), and the cutting blade (124) and push-down blade (12B) rotate together with the rotating shaft (122).

On the inner wall of the kneading tank (108), a plurality of push-up spatula (128) are provided in a row protruding in the height direction of the inner wall, and the rows of push-up spatula (128) are spaced at predetermined intervals in the circumferential direction. They have multiple rows.

The holding member (10B) consists of four frame members (132) arranged to vertically surround the kneading tank (108) and a support frame member (134).

The support frame material (134) is connected to the vertical frame material (132).
) is formed so as to surround the kneading tank (10B) near the center thereof, and is rotatably attached to the support leg (104) at the central fulcrum (13B). As a result, the kneading tank (108) is connected to the support frame material (134).
) can be rotated in the vertical direction around the fulcrum (13B),
The tank opening (110) at the top of the kneading tank (108) is rotated downward to discharge the mixture.

As shown in FIG. 5, a tank gear (130) is provided in the circumferential direction at the center of the outer peripheral wall of the kneading tank (108), and on the other hand, both vertical frame members (132) are provided with the kneading Tank gear (130) provided on the outer peripheral wall of the tank (108)
Frame gears (138) (138) that mesh with the frame gears (138) are provided. One of these frame material gears (13B) is a frame material gear (132).
) is rotated by the motor (140) provided in the frame gear (13g), and the tank gear (1
30) and the kneading tank (10B) rotates.

Bearings (142) are interposed between the upper and lower parts of the kneading tank (10g) and the holding member (toe), so that the kneading tank (108) can rotate smoothly without moving in the vertical direction.

As shown in Figure 1, the measuring device (20Q) is connected to the pouring device (
300), and the weighing hopper (202)
, a vacuum valve for the weighing hopper (204), and a swing clamp cylinder (20B).

A desired amount of the mixture sent from the kneading device (100) is measured by a measuring hopper (202), and the desired amount is pumped to the casting device (300) by a swing clamp cylinder (20B). In this case, a weighing hopper (202) and a swing clamp cylinder (20
Since the vacuum valve (204) is interposed between the swing clamp cylinder (20(i)), the part for pumping the mixture below the swing clamp cylinder (20(i)) is kept airtight.

As shown in FIG. 1, the pouring device (300) has a pouring chamber (
304), a vacuum pump (306), and an accumulation device (30g) provided inside the casting chamber (304). It becomes more.

The pouring chamber (304) has a cylindrical shape and is placed on the floor with the axial direction lying on the side. The casting chamber (304) of this embodiment is
A trolley carrying a mold (302) for molding the mixture (
310) is large enough to accommodate two units at the same time. At both ends of the casting chamber (304), an airtight door (312) for carrying in the cart (310) and an airtight door (314) for carrying out the car are provided. Set up room (30
4) The interior can be kept airtight.

As shown in FIG. 7, the casting chamber (304) has an air port (3
1G) is provided, and a vacuum pump (30[1i) is connected to this air port (31t3) via a pipe (358).

A rail (318) for carrying the cart (atO) into the casting chamber (304) is laid so as to penetrate inside the casting chamber (304).

The rail (318) is removable at the end of the casting chamber (304) so that the two airtight doors (312) and (314) can be opened and closed, and as shown in FIG.
12) is closed, the external rail (318a) of the pouring chamber (304) is bent downward at the bending point (320), and there is no problem in opening and closing the airtight doors (312) and (314). .

When moving the trolley (310), the rail (318a)
) horizontally with the support rod (322), and open the casting chamber (304).
) is connected to the rail (318b) laid inside. To remove the support rod (322) from the rail (318a), rotate the removal rod (324) to remove the support rod (322).
falls down.

As shown in FIG. 8, a pallet (328) is placed on the cart (atO) via a spring (32B), and a mold (302) is placed on this pallet (328). A pie break (33) is attached to the bottom of the pallet (328).
0) to vibrate the mold (302) via the spring (32B).

The mixture is placed in the upper part of the casting chamber (3Q4).
04) There are two input ports (332) for feeding into the interior.

Above the inside of the casting chamber (304), there is an accumulation device (for temporarily accumulating the mixture sent from the input port (332)
308) are installed.

As shown in FIG. 8, an upper rail (336) is laid on a rail stand (334) projecting from the inner wall of the casting chamber (304). An admixture storage trolley (338) moves on this upper rail (336).

As shown in FIG. 6, an accumulation storage (340) for accumulating the admixture is provided on the storage cart (338), and the above-mentioned input port (332) is provided at the upper part of this storage storage (340). An opening (342) is provided to receive the admixture fed thereinto. Further, a supply port (34G) extending obliquely upward is provided at the lower part of the front wall (344) of the storage chamber (340), and this supply port (348) supplies the mixture to the mold (302).
). This supply port (348)
A second supply port (348) is bendably connected to the tip of the mold (348). The supply port (302) comes into contact with the mounting surface (302a) of the supply port (302).
34B) and the second supply port (348) are formed to be slightly smaller than the width of the mold (302).

A pumping device (350) for pumping the mixture through the supply port (346) is provided at the front inside the storage chamber (340).

The rear wall (352) of the storage (340)
) When the amount of the mixture inside decreases, it moves forward and pushes the mixture to the front where the pumping device (350) is located. The method for sliding the rear wall (352) in the front-back direction is as follows. Attach the threaded rod (85) from the rear of the rear wall (352).
4) is rotatably protruded, and the tip of this threaded rod (354) is connected to a moving device (358). Mobile device (3
5B), the rear wall (352) is moved in the front-back direction by rotating and moving the threaded rod (354) in the axial direction. Further, this moving device (35B) also serves as means for moving the storage cart (338).

The process of producing a solidified molded product using the above apparatus will be described below.

First, examples of the types and kneading ratios of three types of raw materials, coagulant, aggregate, and water, are shown below.

The coagulant is made by kneading 48% each of alumina and calcium, 1% each of magnesium, iron, and titanium, 0.1% each of zirconium and tungsten, and approximately the same ratio of boron, vanadium, zinc, and strontium to make a total of 100%. %, and the mixture is fired at 1,400 to 1,450 degrees.

In this embodiment, blast furnace slag is used as the aggregate.

The coagulant and aggregate are kneaded in a ratio of 3=7, and water is added in an amount of 20% based on the total amount of the coagulant and aggregate.

As shown in Figure 3, the position of the holding member (10B) is fixed relative to the support leg (104) so that the tank opening (110) and air port (112) of the kneading tank (108) are facing upward. , the valve (118) of the tank opening (110) is opened, and the three types of raw materials, water, aggregate, and coagulant, in the above proportions are introduced into the kneading tank (108).

After closing the valve (118) of the tank opening (110), the vacuum pump (11B) is operated to evacuate the air inside the kneading tank (108) through the air port (112) to create a vacuum. The reduced pressure inside this kneading tank (108) is 60To
R or so is preferable. After evacuating the inside of the kneading tank (108), close the valve (120) of the air port (112),
Remove the flexible pipe (114) from the air vent (112).

The kneading tank (108) is rotated around its axis by the motor (140), and the raw materials introduced into the kneading tank (108) are stirred and kneaded. In this case, the raw material located in the center inside the kneading tank (tOS) is
2B) and then stirred towards the inner wall by a rotating cutting spatula (124). The raw material sent to the vicinity of the inner wall of the bottom is sent to the upper center of the kneading tank (108) by a rotating push-up bell (128), and sent downward again by a push-down bell (126). As described above, as the raw materials circulate inside the kneading tank (108), the three types of raw materials, aggregate, water, and coagulant, are stirred and kneaded to form a mixture.

In this way, since the three types of raw materials, aggregate, water, and coagulant, are stirred and kneaded in a vacuum, there is no air mixed inside the mixture, and there is no air mixed inside the raw materials at the beginning. removed externally. As a result, since there is little flow resistance during kneading, no heat is generated, so water does not partially evaporate and bubbles are less likely to remain.

After rotating the kneading tank (108) for a certain period of time to form a mixture, stopping the rotation of the kneading tank (108),
Connect the pipe (114) to the air port (112) and send air from the vacuum pump (11B) to the kneading tank (108).
bring the inside pressure to the same pressure as the atmosphere. Next, support legs (104
) by rotating the holding member (toe) around the fulcrum (13B) of the kneading tank (108).
) is in the lower position (Fig. 4),
Fix it in that state, and hold the valve (110) at the tank opening (110).
118), the mixture is taken out from the kneading tank (108), and the mixture is transferred to the weighing hopper (202) of the weighing device (200).
Input into.

Next, open the airtight door (312) for carrying in the casting chamber (304), connect the rails (31g) inside and outside of the casting chamber (304), and move the trolley (atO) carrying the mold (302). It is housed inside the casting chamber (304). Once the trolley (310) has been accommodated, the rail (318a) is removed and the airtight loading door (312) is opened.
, then operate the vacuum pump (30B),
Air is removed from the air port (310) to create a vacuum inside the casting chamber (304). This reduced pressure inside the kneading tank (1
As with the inside of 08), about 60 Tor is preferable.

The opening of the storage cart (33B) is moved directly below the input port (332>. In this case, as shown in FIG.
The storage position of the cart (310) is set so that the lower end opening of the common supply port (348) is located in front of the mounting surface of the mold (302). Note that the second supply port (348) is configured to prevent the second supply port (348) from contacting the peripheral wall of the mold (302).
34B) is once bent upward at the bending point of the supply port (34B), and after the mold (302) is accommodated, the second supply port (34g) is bent downward and the mold is removed. (302) is brought into contact with the mounting surface.

The moving device (35B) moves the rear wall (352) to the rearmost position to maximize the capacity of the storage (340). A metering device (200) measures the amount of mixture necessary to form a solidified molded product into a swing clamp cylinder (200).
0B) to the storage (340).

After pumping the mixture to the storage (340), the storage (340) is completed.
340) Move the internal pumping device (350) to pump the mixture to the supply port (84B).

While moving the storage cart (338) from the front of the mold (302) to the rear, the entire mold (302) is filled with the mixture from the second supply port (34B) to a uniform thickness.

This allows the mixture to be shaped into the required shape. Further, the mold (302) is vibrated by a pie break (330) so that the mixture is filled to a uniform thickness.

By molding the mixture in a vacuum, air craters are not formed on the surface of the solidified molded product, and air holes are not formed inside the solidified molded product, so that the inside is not oxidized and does not easily absorb water.

The mixture inside the storage chamber (340) is supplied to the mold (302) and the amount decreases, so the rear wall (352) is moved forward to push the mixture to the front of the storage chamber (340). ,
The mixture is always fed from the pumping device (350).

After filling the mold (302) with the mixture, the pressure feeding device (
350) and bend the second supply port (34B) upward again. After air is fed into the pouring device (304) through the air port (318) and brought to the same pressure as the atmosphere, the two airtight doors (312) and (314) are opened. Connect the inside and outside rails (318) of the pouring chamber (304), and open the airtight door for unloading (31).
4) Take out the two carts (310) from the opening.

In addition, two carts (310) carrying empty molds (302) are sent into the casting chamber (304) through the opening of the airtight door (312) for carrying in, and the mixture is poured in the same manner as above. Fill.

As shown in FIG. 2, the mold (302) filled with the mixture inside the pouring chamber (304) is moved by moving the rail (31B) outside the pouring device (304) and moving the mold (302) into the pouring device (400). The mixture is stopped at , and the filled mixture is meshed to increase the strength of the solidified molded product.

The mold (302) that has been screened is again placed on the rail (302).
318) Move the top and stop at the lining device (500) to line the screen. Backing is carried out in the atmosphere since a smooth surface finish is not required, but when producing an exterior material that requires smooth surfaces on both sides, lining is also carried out in a vacuum.

The lined mold (302) is cured and hardened in the air in a steam constant temperature chamber for a while to form a solidified molded product.

[Effects of the Invention] According to the method for producing a solidified molded product according to the present invention, since the kneading is carried out in a vacuum, water does not partially evaporate and bubbles are unlikely to remain in the mixture. In addition, since the casting is done in a vacuum, there are no air holes inside the solidified molded product, which prevents the inside from being oxidized and makes it difficult for water to absorb, making it possible to obtain a solidified molded product with excellent hardness and strength. Since air craters are not formed during the process, high-quality solidified molded products can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a side view of the pouring device, measuring device, and kneading device with some parts cut out, Fig. 2 is a plan view showing the manufacturing process of the present invention, and Fig. 3 is
A partially cutaway side view of the kneading device, FIG. 4 is a side view of the kneading device with the kneading tank tilted, FIG. 5 is a plan view of the kneading device, and FIG. 6 is a main part of the storage device. An enlarged sectional view, FIG. 7 is a plan view of the driving device, and FIG. 8 is a longitudinal sectional view of the driving device. Explanation of symbols 100... Kneading device 116... Vacuum pump 302... Molding mold 304... Casting device 306... Vacuum pump No. Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A method for manufacturing a coagulated molded product comprising water, aggregate, and a coagulant for solidifying these, the method comprising putting the water, aggregate, and coagulant into a kneading device. After that, the inside of this kneading device is evacuated, and the input materials are kneaded to form a mixture inside the kneading device in a vacuum state. After placing the mold inside the casting device, the inside of this casting device is is evacuated, the mixture is filled into a mold inside the casting equipment in a vacuum state, the mold filled with the mixture is taken out of the casting equipment, and the mixture is cured outside the casting equipment. A method for producing a solidified molded product characterized by solidification.