JP3050770B2 - Side shaping method of inorganic material mat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for shaping a side surface of a raw material mat for an inorganic plate.

[0002]

BACKGROUND OF THE INVENTION In order to manufacture an inorganic plate, for example, a raw material mixture mainly composed of cement and a wood reinforcing material is sprayed on a template to form a mat, and the mat is stacked with the template in a number of stages. A semi-dry method or a dry method of curing and curing by pressing is applied. In the above method, in order to adjust the width of the mat, a rotating brush rotating in a direction opposite to the conveying direction of the mat is brought into contact with the side surface of the mat and brushed to form the side surface, and the density of the side surface is increased and the following is performed. The mat is prevented from collapsing in the pressing step. As the above inorganic plate, there is provided an inorganic plate having a three-layer structure in which the front and back layers have a dense structure and the core layer has a rough structure. In order to manufacture such an inorganic plate having a three-layer structure by a semi-dry method or a dry method, a raw material obtained by mixing a fine wood reinforcing material for a surface layer or a back layer on a formwork is sprayed, and a first mat layer is formed. Is formed, and then a mixture of coarse wood reinforcement for the core layer is sprinkled thereon to form a second mat layer, and then a third mat layer is formed from the same material as the first layer. I do.

[0003]

2. Description of the Related Art Conventionally, in order to manufacture an inorganic plate having a three-layer structure, as shown in FIG. 7, a mat layer (2A, 2A) is formed on a template (1).
After forming a three-layer mat (2) consisting of B, 2C), the sides were brushed with a rotating brush (3) to perform side shaping.

[0004]

In the conventional side shaping method described above, the mat (2) has a large thickness, and the mats (2A, 2C), which are the front and back layers, contain fine wood reinforcement and are dense and rigid. However, it was necessary to make the rotating brush (3) strongly contact the side of the mat (2). When the rotating brush (3) comes into strong contact with the side surface of the mat (2) as described above, both sides of the mat (2) are pushed by the rotating brush (3) and bulge, and thus both sides bulge. When the inorganic mat is manufactured by stacking the mat (2) with the template (1) and pressing and curing to harden it, the product becomes uneven in density in the width direction, and the mat (2) is pressed during pressing. When a large number of stacks are stacked together with the template (1), they tend to tilt in the middle and there is a great risk that the stacked mat (2) will fall.

[0005]

According to the present invention, as a means for solving the above-mentioned conventional problems, the side surface of a mat (12) having three or more layers formed on a template (11) is brushed and shaped. In this case, the mat layer (12A, 12B) up to the second layer is first formed on the template (11) and the side is brushed, and then the third or more mat layers are formed on the mat layer (12A, 12B). It is an object of the present invention to provide a method for shaping the side surface of a raw material mat of an inorganic plate, in which the layer (12C) is formed and the side surface is brushed again.

[0006]

[Function] Up to the second layer of mat layer (12A, 12B) on template (11)
At the stage of forming the first side brush (1
3A) brushing and shaping. In this case, even if the first mat layer (12A) is a dense one made of a raw material mixed with a fine wood reinforcing material, the thickness of the entire mat is smaller than that of the three mats combined, so that the rotating brush
(13A) does not need to be so strongly contacted to the side of the mat, so that there is almost no swelling on both sides of the mat. After the brushing, the third mat layer (12C) is further formed and the side surfaces are again brushed by the second rotating brush (13B). In this case, the surface of the third mat layer (12C) can be flattened even if there are slight swells on both sides up to the second layer, and the third mat layer (12C)
Is mainly brushed, especially the mat layer (1
Even if 2C) is a dense material composed of a mixture of fine wood reinforcement, it is not necessary to make the rotating brush (13B) come into strong contact. Therefore, as a result, almost no bulge is formed on both sides of the mat (12) having the three-layer structure formed and shaped on the side surface.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in FIGS. 1 to 4. A transfer plate (11), which is a template, is moved by a conveyor (14) in a direction indicated by an arrow A in FIG. The first mat layer (12A) is formed on the plate (11). The mat layer (12A) is formed by, for example, spraying an inorganic plate raw material having the following composition to form a dense structure. Portland cement 60% by weight Pearlite 10 〃 Water glass 1.2 パ ラ Paraffin 1 〃 Wood piece 25 〃 (Wood piece: 1 mm or less passing through a mesh of 4 mm) Water 40 〃 Next, a second layer is formed on the mat layer (12A). Matte layer (12B)
Is formed. The mat layer (12B) is formed by spraying an inorganic plate material having the following composition, for example, and has a rough structure. Portland cement 60% by weight Pearlite 10 〃 Water glass 1.2 パ ラ Paraffin 1 〃 Wood piece 25 〃 (Wood piece: 1 to 2 mm in thickness without passing through mesh 10 mm and passing through mesh 4 mm) Water 40 水

After forming the second mat layer (12B), both sides of the mat (12A, 12B) are brushed and shaped by the first rotating brush (13A) as shown in FIG. The rotating brush (13A) is rotated by a motor (15A) through a reduction gear system incorporated in a gear box (16A) in a direction opposite to the mat transfer direction. The first mat layer in the first brushing shaping
(12A) has a dense structure, but the second mat layer (12B)
The rotating brush (13A) does not need to be so strongly contacted because it has a rough structure and is naturally smaller in thickness than the entire three-layer mat. Therefore, the swelling on both sides of the mat is also small.

Next, a raw material having the same composition as the surface layer is sprayed on the second mat layer (12B) to form a third mat layer (12C), and then the second rotary brush is formed as shown in FIG. (13B) Brush and shape the side of the mat (12). At this time, the surface of the third mat layer (12C) is substantially flat, and the first and second mat layers (12A, 12B) are already shaped on the sides by the first rotating brush (13A). Since the brushing shaping by the second rotating brush (13B) is mainly performed on the third mat layer (12C), even if the third mat layer (12C) has a dense structure, Since the brushing shaping is almost one layer, the second rotating brush (13B) does not need to make strong contact with both sides of the mat. The second rotating brush (13B) is also a motor
By (15B), it is rotated in a direction opposite to the mat conveyance direction via a reduction gear system built in the gear box (16B).

The rotating brushes (13A, 13B) are connected to the motors (15A, 15B) via the reduction gear system incorporated in the gearboxes (16A, 16B) as described above. And each gearbox (16A, 1A) as shown in FIG.
6B) is supported by a rotating plate (17) attached to a vertical sliding plate (18) so as to be rotatable left and right about an axis (17A). Has an arc-shaped guide hole (17
B, 17B), and fixing bolts (19, 19) are screwed into the upper and lower sliding plates (18) through the arc-shaped guide holes (17B, 17B). 19), the rotating plate (17) is fixed at a predetermined rotating angle, and thus the side of the rotating brush (13A, 13B) abutting on the mat is positioned from the position along the perpendicular PL. It is possible to adjust to a position inclined by an angle θ shown by a dotted line.

The vertical slide plate (18) is mounted on a support frame (21) suspended from the base frame (20) so as to be vertically slidable. That is, as shown in FIG. 5, a pair of upper and lower female screw blocks (18A, 18A) is fixed to the back surface of the upper and lower sliding plate (18), and a support frame (18A, 18A) is attached to the female screw block (18A, 18A). 21) Bearing
A bolt rod (22) pivotally supported by (21A, 21A) is screwed through, and a handle (22A) is attached to the upper end of the bolt rod (22), and the handle (22A) is inserted through the handle (22A). The bolt rod (22)
The upper and lower sliding plates (18) can be slid up and down by rotating the slidably left and right, and the rotating brushes (13A and 13B) can be slid up and down. As described above, the rotating brush (13A, 13B)
Are mounted so that they can tilt in the left-right direction and move up and down, but as the rotating brushes (13A, 13B) wear, the rotating brushes (13A, 13B) move closer to the mat side. When adjusting the rotation angle of (17) and replacing the rotating brushes (13A, 13B), the rotating brushes (13A, 13B) are moved upward through the upper and lower sliding plates (18).

After brushing and shaping both sides of the mat (12) as described above, as shown in FIG.
Are stacked in a number of stages together with the transfer plate (11), fed to a press machine, pressed and cured to form an inorganic plate. As described above, the surface of the mat (12) is flat and has a substantially uniform thickness in the width direction. Therefore, even if the mats (12) are stacked in many stages, they are stable and do not fall down. The product also has a uniform density in the width direction.

In the above embodiment, the mat has a three-layer structure, but may have a four-layer structure or a multilayer structure having more layers.

[0014]

Thus, in the present invention, when mats are stacked, there is no danger of falling down, and the density of the inorganic plate product becomes uniform in the width direction.

[Brief description of the drawings]

 1 to 4 show one embodiment of the present invention.

FIG. 1 is a plan view of a brushing shaping part.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG. 1;

FIG. 4 is a front view of a brush mounting mechanism.

FIG. 5 is a front view of the brush mounting mechanism with the upper and lower sliding plates omitted.

FIG. 6 is a diagram showing a state in which mats are stacked.

FIG. 7 is a partial sectional view of a conventional brushing shaping.

[Explanation of symbols]

 11 Transfer board (template) 12 Mat 12A First layer mat 12B Second layer mat 12C Third layer mat 13A First rotating brush 13B Second rotating brush 14 Conveyor 15A First motor 15B Second motor

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B28B 11/08 B28B 11/22

Claims (1)

(57) [Claims] When the side of a mat having three or more layers formed on a template is brushed and shaped, first, up to a second layer of mat layer is formed on the template and the sides are brushed and shaped. Forming a third or more mat layer on the mat layer and brushing and shaping the side surface again;