JP2001334453A - Roughing method and device in roughing process of decorative laminated sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roughing method and its device in a roughing process of a decorative laminated sheet capable of setting the length of bristles uniform by polishing the tip of a rotating brush without detaching the rotating brush from a roughing device and without stopping the roughing works. SOLUTION: In this roughing method roughing the base material surface traveling on a conveyer by scrubbing it with the rotating brush, a polishing tool provided in parallel to the axial direction of the rotating brush is brought in contact with the rotating brush, polishes the brush tip by rotating the rotating brush, and at the same time roughs the base material by scrubbing. This roughing device comprises conveyer for carrying the base material, the rotating brush roughing the base material surface traveling on the conveyer by scrubbing, and the polishing tool provided in parallel to the axial direction of the rotation brush and coming into contact along the face long side direction of the brush roll.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for manufacturing a decorative board.

[0002]

2. Description of the Related Art Conventionally, as a method for producing a building material having a decorative layer on the surface of an inorganic base material such as a cement plate or a calcium silicate plate, a method described in JP-A-63-270577 has been proposed. Have been.

[0003] That is, in this manufacturing method, a polyurethane-based sealer is applied to the surface of an inorganic base material to perform a sealer treatment on the base material. The layer is provided on the substrate surface.

[0004]

By the way, in this method, before applying the polyurethane-based sealer to the surface of the inorganic base material, the surface is roughened with a rotating brush to improve the adhesion of the sealer. After applying the sealer, the application surface is roughened with a rotating brush to improve the adhesion between the sealer-treated layer and the decorative layer.

However, since it is necessary to prepare decorative boards having different widths as building materials having a decorative layer, the surface of a base material having a different width is roughened by a rotating brush for decorative painting.

[0006] As described above, the tip of the brush is worn at the portion where the rotating brush rubs against the substrate, but the portion that does not rub off the width of the substrate is not worn. Therefore, there may be a step in the surface length direction of the brush roll between the rotating brush and a portion that does not rub. In particular, after successively roughening a narrow inorganic base material, if the wide inorganic base material is roughened with a rotating brush, between the center of the base material and the brush tip of the rotating brush, A gap is formed, so that the central portion of the substrate surface cannot be rubbed and the surface cannot be uniformly roughened.

For this reason, the tip of the brush is cut or polished with a cutter or grindstone while the rotary brush is mounted on a lathe and rotated, and the length of the brush of the rotary brush having a step (length of bristle feet) However, it is necessary to stop the surface roughening device and remove the rotating brush.

Further, in the same manner as when the inorganic substrate is roughened by the rotating brush of the surface roughening device, the flat plate on which the sandpaper is stuck is flown onto the conveyor of the surface roughening device, thereby obtaining the sandpaper. While the brush tip of the rotating brush is polished to make the length of the bristle uneven evenly, while sanding the tip of the rotating brush with sandpaper, an inorganic base is used. There is a problem that the surface cannot be roughened by flowing the material.

In view of such circumstances, the present invention polishes the brush tip of the rotating brush and removes the fluff without removing the rotating brush from the roughening device or stopping the roughening operation. It is an object of the present invention to provide a method and an apparatus for roughening a decorative board in a roughening step in which the lengths can be made uniform.

[0010]

Means for Solving the Problems To achieve such an object, a roughening method in the step of roughening a decorative board according to the first aspect of the present invention (hereinafter referred to as "claim 1").
Surface roughening method) is a polishing tool provided in parallel to the axial direction of the rotating brush in a method of roughening the surface of a base material running on a conveyor by rubbing the surface with a rotating brush. Is brought into contact with the rotating brush, the rotating brush is rotated to polish the brush tip, and the surface of the base material is rubbed with the rotating brush to roughen the surface.

A roughening device in the step of roughening a decorative plate according to the second aspect of the present invention (hereinafter referred to as a "roughening device of the second aspect") transports a substrate. A conveyor, a rotating brush that rubs the surface of a base material running on the conveyor to roughen the surface, and a polishing tool that is provided in parallel with the axial direction of the rotating brush and contacts along the surface length direction of the brush roll. It is characterized by the following.

In the present invention, the substrate is not particularly limited, and examples thereof include inorganic cured products such as calcium silicate plate and cement plate mixed with reinforcing fibers.

In the roughening step, the rotating brush used is a brush filament formed by mixing 20 to 40% of abrasive grains of silicon carbide or aluminum oxide with a synthetic resin such as nylon or the like. Many are planted and used.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings. 1 and 2 show an embodiment of a surface roughening apparatus used in a surface roughening step of manufacturing a decorative board according to the present invention.

As shown in FIG. 1, the surface roughening device comprises a transport roll conveyor 1, a rotary brush 2 rotating in the direction of arrow s above the roll conveyor 1, and a rotary brush 2
And a polishing tool 3 provided with a roll-shaped grindstone 31 provided in parallel with the axis of.

In the rotating brush 2, a large number of brushes 22 are implanted on a roll peripheral surface of a roll body 21 having a diameter of 150 mm to form a brush roll 22a. The brush 22 is made of nylon and abrasive grains of silicon or aluminum oxide.
４０40% A brush filament having a wire diameter of 2.0 mm mixed therein is cut so as to have a hair length of 75 mm. Rotary brush 2 with brush 22 implanted
Is a brush roll 22a having a diameter of 300 mm and a surface length of 1
It is 300 mm.

The polishing tool 3 comprises a roll-shaped grindstone 31 and a grindstone 3.
A dust collecting cover 32 covers the periphery of the dust collecting duct 1, and a dust collecting duct 33 is attached to a connection port 34 outside the dust collecting cover 32. The roll-shaped grindstone 31 is provided in parallel with the axis of the rotating brush 2 so as to be in contact with the surface length of the rotating brush 2, and 1 to 1 in the direction v opposite to the rotating direction s of the rotating brush 2.
It rotates at a rotation speed of 000 rpm.
In addition, the dust collection port 35 of the dust collection cover 32 is almost open to the brush roll 22a.

The grindstone 31 is assembled integrally with the cover 32 so that the grindstone 31 can be moved in the center axis direction w of the rotating brush 2 while checking the degree of wear of the brush 22. Further, as shown in FIG. 2, the surface length L of the grindstone 31 is the same as the surface length M of the rotating brush 2, and slides by reciprocating in the width axis direction x.

Next, an embodiment of the roughening method of the present invention using the roughening apparatus shown in FIGS. 1 and 2 will be described.
A surface of a flat substrate 11 made of calcium silicate mixed with reinforcing fibers is subjected to a sealer treatment and a sealer-treated substrate (hereinafter, referred to as “treated substrate”) 10 on which a sealer layer 12 is formed is supplied onto the conveyor 1. Flow in the direction of arrow f.

Next, while rotating the rotating brush 2,
The brush roll 22 a is applied to the entire surface of the processing substrate 10, and the entire surface of the sealer layer 12 of the processing substrate 10 is rubbed against the tip of the brush 22 to roughen the surface.

At this time, the roll-shaped grindstone 31 of the polishing tool 3 comes into contact with the brush roll 22a of the rotating brush 2 and moves in the reverse direction v.
And reciprocate in the width axis direction x. In this manner, the tip of the brush 22 at the unused portion m of the rotating brush 2 can be polished.

The polishing dust is received by the dust collecting cover 32 from the dust collecting port 35 and is collected via the dust collecting duct 33 in a dust collecting box provided with a suction device (not shown). Then, the sealer layer 12 is coated with a clear paint or the like on the roughened substrate surface 10a and cured to obtain a decorative plate having a glossy layer or the like on the surface.

According to this roughening method, when the surface of the flat base material 11 made of calcium silicate mixed with reinforcing fibers is roughened by rubbing with a rotating brush, the surface is provided in parallel with the axial direction of the rotating brush 2. The polishing tool 3 is brought into contact with the rotating brush 2,
Since the rotating brush 2 is rotated to polish the brush tip, the length of the bristle of the rotating brush 2 can be made uniform. Therefore, it is not necessary to remove the rotating brush 2 from the roughening device and to stop the roughening operation, thereby improving the productivity.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific embodiment is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if present, it is included in the present invention.

For example, in the above embodiment, the surface length L of the grindstone 31 is set to be the same as the surface length M of the rotating brush 2;
1 is 100 to 30 times longer than the surface length M of the rotating brush 2.
It may be longer by 0 mm. In this case, the grindstone 31 may not be reciprocated in the width axis direction x, but may be reciprocated to maintain the polishing surface of the grindstone 31 uniformly.

In addition, the tip of the brush 22 of the rotary brush 2 is polished by rotating the roll-shaped grindstone 31.
The irregular brush tip may be scraped off so as to contact the peripheral surface of the brush.

Further, the surface of the flat base material 11 is subjected to a sealer treatment to roughen the surface of the sealer-treated base material 10 on which the sealer layer 12 is formed. The surface may be roughened, or a DAP impregnated paper may be laminated on the surface of the base material subjected to the sealer treatment to obtain a decorative layer laminate, and before applying a clear paint to the surface of the substrate of the laminate. The surface may be roughened.

[0028]

According to the first aspect of the present invention,
In a surface roughening method in which the surface of a base material traveling on a conveyor is rubbed and roughened by a rotating brush, a polishing tool provided in parallel with an axial direction of the rotating brush is brought into contact with the rotating brush, and the rotating brush is rotated. The surface of the substrate is roughened by rubbing the surface of the base material with a rotating brush, and the surface of the substrate is roughened by the rotating brush. The length of the bristle feet can be made uniform by polishing the cut portion. Therefore, it is possible to continuously roughen the substrate without removing the rotating brush from the roughening device or stopping the roughening operation.

According to a second aspect of the present invention, there is provided a roughening apparatus for conveying a substrate, a rotating brush for rubbing the surface of the substrate traveling on the conveyor to roughen the surface, and a rotating brush parallel to the axial direction of the rotating brush. And a polishing tool that comes in contact with the brush roll along the surface length direction. Can be polished. Therefore, when used for the production of decorative boards, the operating rate of the roughening step is improved, and the production cost is reduced.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing one embodiment of a roughening method and a roughening method in a roughening step of a decorative plate of the present invention.

FIG. 2 is a schematic plan view illustrating one embodiment of the above.

[Description of Signs] 1 Conveyor 10 Base material 2 Rotary brush 22 Brush 22a Brush roll 3 Polishing tool 31 Grinding stone 32 Cover

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Ken Otokura 210 Furutoshuku, Okayama-shi, Okayama Pref.

Claims (2)

[Claims] In a method of roughening a surface of a base material running on a conveyor by rubbing the surface with a rotating brush, a polishing tool provided in parallel to an axial direction of the rotating brush is brought into contact with the rotating brush. A roughening method in a roughening step of a decorative plate, characterized in that the rotating brush is rotated to polish the brush tip and to rub the substrate surface with the rotating brush to roughen the surface. 2. A conveyor for transporting a substrate, a rotary brush for rubbing the surface of the substrate running on the conveyor to roughen the surface, and a roller provided in parallel to the axial direction of the rotary brush and extending in the surface length direction of the brush roll. And a polishing tool that comes into contact with the surface of the decorative board.