JPH07182B2 - Molding material spraying device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a spraying device for a molding material such as a hard wood chip cement board.

[Prior Art] As described in JP-A-60-44428, a hard wood chip cement board is prepared by mixing a cement composition with a wood material that has been fragmented and water, and then applying a molding material to the spreader. It is formed into a predetermined shape by being sprayed on a fixed plate on the forming conveyor, and is often used as a building material.

At this time, the spraying device supplies a mixture of wood flakes and cement with a mixer, supplies it on the supply conveyor, quantifies it with a slat conveyor and a leveling brush roll, and then installs it on the end side of the supply conveyor. It is supposed to be scattered on the side of the scraping molding conveyor with a brush roll.

In the actual production line of hard wood chip cement board, the first and second spraying devices are arranged adjacent to each other along the molding conveyor, and the first spraying device sprays the surface layer material on the surface plate, and Two
In the spraying device, the core layer material is sprayed on the surface layer material to be laminated.

[Problems to be Solved by the Invention] However, in the related art, although the molding material is dispersed by the flight brush rolls that configure the spraying device, the molding material that is dispersed by the flight brush rolls can be used as a fixed plate. It is very difficult to disperse it uniformly over the entire range.

It is an object of the present invention to uniformly disperse a molding material supplied on a supply conveyor on the molding conveyor when the molding material is sprayed on the molding conveyor.

[Means for Solving the Problem] The present invention according to claim 1 is installed at a terminal end side of a supply conveyor in a molding material spraying device for spraying a molding material supplied onto a supply conveyor onto the molding conveyor. The first flight brush roll that scrapes off and spreads the molding material on the supply conveyor, and stands upright in the molding material spraying direction by the first flight brush roll, and receives the molding material sprayed by the first flight brush roll. And a second flight brush roll which is installed below the guide plate and receives the molding material falling from the guide plate and scatters it on the molding conveyor. Is.

According to the present invention as set forth in claim 2, an endless circumferential belt device is erected in the molding material spraying direction by the first flight brush roll, and the belt portion of the belt device facing the first flight brush roll is used as a guide plate. Use the first belt device
An adhering matter scraping device is additionally provided on the belt portion on the side opposite to the flight brush roll.

[Operation] According to the present invention described in claim 1, there is the following operation.

The molding material supplied on the supply conveyor is
It is scraped off by the flight brush roll toward the guide plate side, and sprayed so as to be substantially uniformly dispersed on the guide plate. Then, the molding material dispersed so as to be substantially uniformly dispersed on the guide plate is dropped so as to have a substantially uniform thickness on the guide plate, and then is dispersed so as to be uniformly dispersed on the molding conveyor by the second flight brush roll. To be done.

That is, the molding material is first dispersed by the first flight brush roll so as to be substantially uniformly dispersed on the guide plate, and then is dispersed on the molding conveyor by the second flight brush roll through the guide plate. Therefore, the dispersion on the molding conveyor can be made more uniform.

According to the present invention described in claim 2, the following effects are obtained.

When a part of the molding material adheres to the guide plate and impairs the smoothness of the guide plate, the effect of substantially uniform dispersion of the molding material by the guide plate is impaired. However, the belt of the belt device that constitutes the guide plate is rotated,
Since the deposits on the belt are scraped off by the scraping device, a smooth guide plate can always be used, and uniform dispersion of the molding material on the molding conveyor can be ensured.

[Embodiment] FIG. 1 is a schematic view showing a first embodiment of the present invention, and FIG. 2 is a schematic view showing a second embodiment of the present invention.

(First Example) As shown in FIG. 1, a hard wood chip cement board production line 10 is prepared by mixing a slab 12 on a molding conveyor 11 with a wood material that has been fragmented into a cement composition and water. A spraying device 20 is provided for spraying the formed molding material.

The spraying device 20 includes a mixer device 21 that creates the molding material, and supplies the molding material created by the mixer 21 to the starting end portion of the supply conveyor 22. The molding material supplied to the supply conveyor 22 is quantified by being leveled to a predetermined uniform height by the slat conveyor 23 and the smoothing brush roll 24 while being sent to the end portion of the supply conveyor 22.

The spraying device 20 is provided with a first flight brush roll 25 on the terminal side of the supply conveyor 22, and the first flight brush roll 25 scrapes and spreads the molding material on the supply conveyor 22. A guide plate 26 is erected in the direction in which the first flight brush roll 25 spreads the molding material, and the guide plate 26 receives the molding material scattered by the first flight brush roll 25 and drops it. Further, a second flight brush roll 27 is installed below the guide plate 26, and the second flight brush roll 27 receives the molding material falling from the guide plate 26, and on the surface plate 12 on the molding conveyor 11. Sprinkle on.

28 is a brush roll for scraping off adhering substances for the supply conveyor 22.

In the actual hard wood chip cement board production line 10, first and second sprayers having the same structure as the sprayer 20 are arranged adjacent to each other along the molding conveyor 11, and the first sprayer is a fixed plate. The surface layer material is sprinkled on the surface 12, and the second spreading device sprinkles the core layer material on the surface layer material to stack them. Then, on the surface plate 12, a molding material having a predetermined shape composed of the surface layer material and the core layer material is molded.

Next, the operation of the first embodiment will be described.

The molding material supplied onto the supply conveyor 22 is first scraped off by the first flight brush roll 25 toward the guide plate 26 side, and scattered so as to be substantially uniformly dispersed on the guide plate 26. Then, the molding material sprayed so as to be substantially uniformly dispersed on the guide plate 26 drops on the guide plate 26 with a substantially uniform thickness, and is then uniformly dispersed on the molding conveyor 11 by the second flight brush roll 27. It is sprinkled so that it can be forced.

That is, the molding material is first sprayed by the first flight brush roll 25 so as to be substantially evenly dispersed on the guide plate 26, and then is passed through the guide plate 26 to the second flight brush roll.
Since it is sprayed on the molding conveyor 11 by 27, the dispersion on the molding conveyor 11 can be made more uniform.

(Second Embodiment) A difference of the spraying device 30 of FIG. 2 from the above-mentioned spraying device 20 is that an endless belt device 31 is erected in the direction in which the first flight brush roll 25 spreads the molding material, and a belt device 31 is provided. The belt portion 31A facing the first flight brush roll 25 is used as the guide plate 26, and the adhering matter scraping brush roll 32 is attached to the belt portion 31B of the belt device 31 opposite to the first flight brush roll 25. It is in.

According to the second embodiment, the following operation is provided in addition to the operation of the first embodiment.

When a part of the molding material adheres to the guide plate 26 and impairs the smoothness of the guide plate 26, the molding material by the guide plate 26 described in the operation of the first embodiment is substantially uniform. The dispersion effect will be impaired. Therefore, in the present embodiment, the belt of the belt device 31 constituting the guide plate 26 is rotated, and the adhered matter on the belt is scraped off by the brush roll 32.
Guide plate 26 that is always smooth as it is scraped off by
It is possible to ensure uniform dispersion of the molding material on the molding conveyor 11.

[Effect of the Invention] As described above, according to the present invention, when the molding material supplied on the supply conveyor is sprayed on the molding conveyor, the molding material can be uniformly dispersed on the molding conveyor.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a first embodiment of the present invention, and FIG. 2 is a schematic diagram showing a second embodiment of the present invention. 11 …… Molding conveyor, 20 …… Spraying device, 22 …… Supply conveyor, 25 …… First flight brush roll, 26 …… Guide plate, 27 …… Second flight brush roll, 30 …… Spraying device, 31… … Belt device, 32… Brush roll for scraping adherents.

Claims (2)

[Claims] 1. A molding material spraying device for spraying a molding material supplied on a supply conveyor onto a molding conveyor, wherein the molding material is disposed on the terminal end side of the supply conveyor and scrapes off the molding material on the supply conveyor. 1 flight brush roll, a guide plate that is erected in the direction in which the molding material is scattered by the first flight brush roll, and is installed below the guide plate that receives and drops the molding material that is scattered by the first flight brush roll. And a second flight brush roll that receives the molding material falling from the guide plate and scatters it on the molding conveyor. 2. A belt device of an endless winding shape is erected upright in a direction in which a molding material is dispersed by the first flight brush roll, and a belt portion of the belt device facing the first flight brush roll is used as a guide plate. The sprinkling device for a molding material according to claim 1, wherein an adhering substance scraping device is additionally provided on a belt portion opposite to the first flight brush roll.