JPS5810201B2 - Molding equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to a molding device.

Forming equipment for forming hydraulic inorganic materials such as cement, gypsum, and calcium silicate into plate shapes has traditionally been a combination of press molding equipment, casting equipment, extrusion molding equipment, paper making equipment, and paper making equipment and press forming equipment. The device is widely known.

A press molding device mixes a hydraulic inorganic material with water to form a slurry, fills it into a lower mold, and pressurizes it with an upper mold and a lower mold to form the slurry.

The casting device injects the above slurry into a mold and molds it.

However, each of these devices had their own drawbacks.

That is, these apparatuses have the problem of not being able to continuously produce molded products and, moreover, discharging a large amount of waste water during molding.

The reason why a large amount of waste water is discharged during molding is as follows.

In other words, when molding slurry using these devices, if the fluidity of the slurry is not good, the slurry will not be filled uniformly into the mold, so a slurry with high moisture content is used. The surplus water is discharged as a large amount of wastewater.

Extrusion molding equipment extrudes hydraulic inorganic material from a die using a screw or the like to form a mold.Although it is possible to make molded products continuously, when making large molded products, the extrusion force reaches every corner of the die. It has the disadvantage that the molding does not spread all over the body and molding defects tend to occur at the corners of the cap.

Furthermore, this device does not allow adjustment of the specific gravity of the molded product, so when it is necessary to adjust the specific gravity of the molded product, it is necessary to adjust the blending ratio of the raw materials.

A paper-making device forms a mixture (slurry) of a hydraulic inorganic material and water into a plate shape using a paper-making felt, etc. A device that combines a paper-making device and a press-forming device uses a paper-making felt to form a mixture (slurry). The raised material is further sandwiched between an upper mold and a lower mold and press-molded.

Although these devices can continuously produce molded products, they are designed to mold a slurry rich in water, so they have the disadvantage that excess water in the slurry is discharged as a large amount of waste water during molding. It had

Furthermore, since these devices are large-scale devices, they also have the disadvantage of high costs.

This invention was made in view of the above circumstances, and includes a lower mold, a moving means for moving the lower mold in one direction, and a means provided above the lower mold so as to be orthogonal to the moving direction of the lower mold. a pressurizing feed roll that presses and hardens the molding material supplied onto the lower mold with the lower mold; The gist of this is a molding device that is equipped with an upper mold that clamps and molds the hardened molding material fed by the pressure feed roll and the lower mold.

That is, this molding apparatus eliminates all the drawbacks of the conventional example.

An embodiment of the molding apparatus of the present invention will now be described with reference to FIG.

In the figure, a belt-shaped lower mold 2 is attached to the entire circumference of a belt conveyor (driven by a chain) 1 that moves in the direction of the arrow, and a pressurized feed roll 3 moves the belt conveyor 1 as shown in the figure. It is positioned above the side 1a, and its axis is orthogonal to the direction of movement of the conveyance side 1a of the belt conveyor 1 (in the direction of the arrow).

The upper die 4 is positioned in front of the pressurized feed roll 3 and is disposed so as to face the lower die 2 on the surface of the conveyance side 1a of the belt conveyor 1.

As shown in the figure, this upper die 4 has one end 4a in sliding contact with the lower peripheral surface 3a of the pressure feed roll 3;
A gap B formed between the pressing surface 5 on the a side and the lower die surface
is set to be approximately the same as the gap C formed between the lowermost end of the pressure feed roll 3 and the surface of the lower mold.

The upper mold 4 is arranged so that the gap formed between the pressing surface 5 on the other end 4b side of the upper mold 4 and the lower mold surface is smaller than the gap B on the one end 4a side. It is inclined so that the gap gradually becomes smaller from the side 4a toward the other end 4b.

The suppression surface 5 of this upper die 4 is smooth.

Note that 6 is a cutting machine, and 7 is a support roll on the conveyance side 1a of the belt conveyor 1.

To mold the molding material using this molding device, the molding material 8 is fed onto the lower mold 2 as shown in the figure.

As a result, due to the movement of the lower mold 2 and the rotation of the pressure feed roll 3, which are caused by the movement of the belt conveyor 1, a constant amount of the molding material 8 is fed to the underside of the pressure feed roll 3, and is pressed together with the lower mold 2. It is pressurized by the pressure feed roll 3 and solidified into a plate shape.

Subsequently, the molding material 9 solidified into a plate shape (plate-shaped solidified molding material) is fed into the lower side of the upper mold 4 by the movement of the lower mold 2 and the rotation of the pressurized feed roll 3, and is then transferred to the lower mold 2. It is sandwiched between the upper die 4 and pressurized to further harden it.

In this case, the gap formed between the pressing surface 5 of the upper die 4 and the lower die surface is smaller on the other end 4b side of the upper die 4;
The plate-shaped solidified molding material 9 is strongly solidified as it is fed to the other end side 4b.

Since the suppression surface 5 of the upper die 4 is smooth,
As the plate-shaped solidified molding material 9 is fed forward between the upper mold 4 and the lower mold 2, its surface smoothness improves.

In this way, the molding material 8 is molded into a plate shape, and the plate-shaped molded product 10 is sent forward from the upper mold 4.

Next, this plate-shaped molded product 10 is cut into a desired length using a cutting machine 6.

In this way, a plate-shaped molded product (not shown) with a smooth surface and a desired length is obtained.

The specific gravity of the plate-shaped molded product 10 can be adjusted by adjusting the roll diameter of the pressure feed roll 3, adjusting the rotation speed of the roll 3 and the moving speed of the belt conveyor 1, and adjusting the upper mold 4 relative to the lower mold 2. can be adjusted by adjusting the slope of

That is, the larger the roll diameter of the pressurized feed roll 3, the larger the rotation speed of the roll 3 relative to the moving speed of the belt conveyor 1, or the greater the slope of the upper mold 4 with respect to the lower mold 2. The more this is done, the greater the specific gravity of the plate-shaped molded product 10 becomes.

When adjusting the specific gravity in this manner, it is easiest and most effective to adjust the specific gravity of the plate-shaped molded product 10 by adjusting the rotation speed of the roll 3 relative to the moving speed of the belt conveyor 1.

A side view of another embodiment of the present invention and a side sectional view of a portion where an upper die is provided are shown in FIGS. 2 and 3, respectively.

That is, this molding device has flanges 12 on both side edges as shown in FIG. 2 instead of the pressure feed roll 3 shown in FIG.
In addition to using a pressurized feed roll 13 formed with a pressure feed roll 13, and instead of the upper mold 4 shown in FIG. 1, as shown in FIG.
4 is used.

The other parts are the same as the molding apparatus shown in FIG.

The molding apparatus of this embodiment has the same functions and effects as the molding apparatus shown in FIG. 1, and also has the advantage of being able to beautifully finish both end surfaces of the plate-shaped molded product 10.

That is, when molding material 8 is molded using the apparatus shown in FIG. 1, both sides of plate-shaped solidified molding material 9 protrude laterally from the side edges of roll 3 and upper mold 4 due to pressure during molding, and are deformed. .

Therefore, the end surfaces on both sides of the obtained plate-shaped molded product 10 are unsightly.

In order to make this beautiful, it is necessary to cut both sides of the plate-shaped molded product 10.

However, in the molding apparatus of this embodiment, the
As shown in the figure, the collar 12 of the roll 13 and the upper die 15
Since the flanges 14 on the side edges of the plate-shaped solid material 9 can be formed to the end surfaces on both sides to make them beautiful, there is no need to do such a thing.

A front view of the components of still another embodiment of the present invention, namely the pressurized feed roll, the upper mold, and the lower mold is shown in FIG. 4.

That is, this molding apparatus uses a pressure feed roll 17 having a constriction on the circumferential surface as shown in FIG. 4 instead of the cylindrical pressure feed roll 3 shown in FIG.
An upper mold 18 and a pressing surface 18 of the upper mold 18 have a cross-sectional shape similar to the cross-sectional shape of the lower half of this pressure feed roll 17.
A lower mold 19 having a surface shape corresponding to the shape of a is used in place of the upper mold 4 and the lower mold 2 in FIG.

The other parts are the same as the molding apparatus shown in FIG.

The molding apparatus of this embodiment has the same functions and effects as the molding apparatus shown in FIG. 1, and also has the advantage of being able to produce a plate-shaped molded product having a corrugated shape.

As described above, the molding apparatus of the present invention moves the lower mold, provides a pressurized feed roll above the lower mold,
An upper mold is provided in front of this pressure feed roll so as to face the lower mold, and the molding material is fed to the underside of the roll by the movement of the lower mold and the rotation of the pressure feed roll, and is then processed by the roll and the lower mold. Because it is pressed to harden, then fed between an upper mold and a lower mold, and molded by being sandwiched between the upper and lower molds, it lacks flowability, which is impossible to mold with conventional press molding equipment or casting equipment. The molding material can be molded continuously.

Therefore, there is no need to mix large amounts of water into the molding material,
Therefore, a large amount of waste water is not generated.

Further, with this molding apparatus, the specific gravity of the molded product can be easily adjusted by adjusting the number of rotations of the pressure feed roll and the sliding speed circle of the lower die.

Moreover, this molding device has a simple structure and is low in cost.

Next, an example of manufacturing a molded article using the molding apparatus of the present invention will be described.

[Manufacturing Example 1] A molding material prepared by mixing each raw material in the following proportions was molded using a molding apparatus shown in FIG.

(Mixing ratio) Portland cement: 100 parts by weight river sand (particle size 2.5 mm or less) 300 parts water
50 In this case, the specifications of the molding device were as follows.

Pressure feeding roll: Made of iron, diameter 170mm, length 30mm
0mm Upper model: Made of iron, length 200mm.

Grading device/200 Belt conveyor speed: 10m/min Gap between pressurized feed roll and lower die: 10mm, and
The rotation speed of the pressurized feed roll was changed as shown in Table 1.

The specific gravity and surface finish of the plate-shaped molded product thus obtained are shown in the same table.

[Manufacturing Example 2] A molding material prepared by mixing each raw material in the proportions shown below was molded using a molding apparatus shown in FIG.

(Mixing ratio) Portland cement = 100 parts by weight asbestos
15 Silica sand (No. 6)
30 Water
70 In this case, the specifications of the molding equipment were as follows.

Pressure feeding roll: wooden, diameter 100mm, length 90mm
0mm Upper model: Made of iron, length 100mm.

Gradient position/100 Belt conveyor speed: 40 m/min Gap between pressure feed roll and lower mold: 5 mm The rotation speed of the pressure feed roll was changed as shown in Table 2.

The specific gravity and surface finish of the thus obtained plate-shaped molded product, which has been molded up to both end faces, are shown in the same table.

[Manufacturing Example 3] The molding material prepared by mixing each raw material in the following proportions was
It was molded using a molding device whose components are shown in the figure.

(Mixing ratio) Portland cement: 100 parts by weight asbestos
: 20 parts by weight silica sand (No. 8)
:10 Water: 70 In this case, the specifications of the molding device were as follows.

Pressure feed roll two wooden Upper model: Made of iron, length 200mm.

Gradient device/400 Belt conveyor speed: 10 m/min Gap between pressure feed roll and lower mold: 6 mm And the rotation speed of the pressure feed roll was set to 1 Orpm.

As a result, a corrugated plate-shaped molded product with a specific gravity of 2.05 and a good surface finish was obtained.

[Brief explanation of drawings]

Fig. 1 is a front view of one embodiment of the present invention, Fig. 2 is a side view of another embodiment, Fig. 3 is a side sectional view of the main parts thereof, and Fig. 4 is a configuration of still another embodiment. FIG. 3 is a front view of the component. DESCRIPTION OF SYMBOLS 1... Belt conveyor, 2... Lower die, 3... Pressure feeding roll, 4... Upper die, 8... Molding material, 9... Platy solidified molding material, 10... Platy molded product.

Claims (1)

[Claims] 1. A lower mold, a moving means for moving the lower mold in one direction, and a moving means provided above the lower mold so as to be perpendicular to the moving direction of the lower mold and supplied onto the lower mold. A pressure feed roll that presses and hardens the molding material with the lower mold, and a pressure feed roll that is provided in front of the pressure feed roll so as to face the lower mold, and is formed by the lower mold and the pressure feed roll. A molding device equipped with an upper mold that clamps and molds the hardened molding material that is sent between the lower mold and the lower mold. 2. The molding according to claim 1, wherein the pressure feeding roll is a pressure feeding roll having ribs formed on both side edges, and the upper die is an upper die having ribs hanging from both side edges. Device.