JP3359477B2 - Powder distribution device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, wood chips, wood flour,
The present invention relates to a powder distribution device used when manufacturing a cement board mixed with a wood reinforcing material such as pulp and wood fiber.

[0002]

BACKGROUND OF THE INVENTION For example, a cement board (wood cement board) mixed with a wood reinforcing material such as wood chips, wood flour, pulp, wood fiber and the like.
A four-layer structure having front and back layers and two core layers is provided. In order to manufacture the wood cement board, a dry method or a semi-dry method is used in which a powdery raw material mixture mainly composed of a wood reinforcing material and cement is sprayed on a template to form a mat, and the mat is cured in a compacted state. Applied. In order to manufacture the wood cement board having the four-layer structure, the template is placed on a conveyor and transported, and the surface mat, the first core layer mat, the second core layer mat, and the back are sequentially formed by four forming devices. The layer mat is formed into a four-layer mat. In this case, it is necessary to mix the raw material mixture for the front and back layers and the material for the core layer and distribute them to four forming apparatuses.

[0003]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a conveyor (2) on which a large number of template plates (1) are placed is fed in the direction of an arrow, and a material receiving port is provided.
(3A, 4A, 5A, 6A) Forming device for surface mat
(3) The template (1) is successively introduced into a first core layer mat forming device (4), a second core layer mat forming device (5), and a back layer mat forming device (6). In each forming apparatus (3,4,5,6), the raw material mixture for the front and back layers or the raw material mixture for the core layer is dispersed and deposited on the template (1), and the front and back layer mat, the first core layer mat and the second core are mixed. Form the layer mat.

In order to distribute the raw material mixture to each of the above-mentioned forming devices (3, 4, 5, 6), a distributing device having flaps (7, 9)
(8,10) is placed above the forming device (3,4,5,6),
A pair of front and rear material supply conveyors (11, 12, 13, 14) are arranged immediately below each distribution device (8, 10).
1,12,13,14), drawer conveyors (15,16,17,18) are arranged at the end, and when the flap (7) of the distributor (8) is in a solid line state, it is connected to the distributor (8). raw material mixture R ₁ to be introduced is fed to the forming device of a surface layer mat (3) by the raw material supply conveyor (11) and the extraction conveyor (15), the raw material mixture R ₁ in the case of one-dot chain line state material supply conveyor (11 ,
12) and a draw-out conveyor (15, 16) to supply both a surface mat forming apparatus (3) and a back layer mat forming apparatus (6), and when the flap (7) is in a dotted line state, the raw material mixture R ₁ is supplied to the backing mat forming device (6) by the raw material supply conveyor (12),
The dispensing device (10) of the flap (9) is the raw material mixture R ₂ are the raw material supply conveyor (13) and the first core layer mat by drawer conveyor (17) in the case of solid state is introduced into the distributor (10) Is supplied to the forming device (4)
(9) is the raw material mixture R ₂ is forming apparatus of the first core layer mat by material supply conveyor (13, 14) and the extraction conveyor (17, 18) in the case of one-dot chain line state (4) and a second
It is supplied to both the core layer mat forming device (5),
The flap (9) is the raw material mixture R ₂ in the case of the dotted line state is fed to the forming device of the second core layer mat by material supply conveyor (14) (5). Each forming device (3,
The raw material mixture R ₁ , R ₂ supplied to the raw material scattering conveyor (19, 20, 21, 22) falls on the raw material scattering conveyor (19, 20, 21, 22).
(19,20,21,22) The raw material mixture R ₁ , R _{2 above} is smoothed and loosened by a smoothing group (23,24,25,26) such as a brush, scraper, etc. 19, 20, 21, 22) are spread and deposited on the template (1) from the end, and a mat is formed on the template (1). The flaps (7, 9) are fed to each forming apparatus (3, 4, 5, 6) by a material dispersion conveyor (19,
20,21,22) is controlled by the measured value of the weight and / or thickness of the raw material mixture R ₁ , R ₂ scattered and deposited on each forming apparatus (3,4,5,6). Is set to be formed.

[0005]

Since the above-mentioned raw material mixture contains a wood reinforcing material, lumps due to the entanglement of the wood reinforcing material are liable to be formed, and the above-mentioned conventional flap type powder distributing apparatus (8, 10) is used. In this case, there is a problem that the nodules in the raw material mixture are not sufficiently loosened, and the density and thickness of the formed mat are varied as a result of being scattered and deposited on the mold plate (1).

[0006]

SUMMARY OF THE INVENTION The present invention relates to the above-mentioned conventional problems.
As a means to solveOn a horizontal top surfacePowder R₁,
R_TwoPut ondo itConveyors (27, 28) to be conveyed, and
A (27, 28) and having a vertical axis of rotation.
Or a plurality of rotating brushes (29, 30),OneTimes
Rolling brush (29, 30)Scraped off byConveyor (27,
28) TopsurfacePowder R₁, R_Two Length d in the width direction of ₁ , D
_Two Is the powder R placed on the upper surface of the conveyor (27, 28). ₁ , R
_Two Length D in the width direction of ₁ , D _Two Smaller than
When a plurality of the rotating brushes (29, 30) are placed on the
IseachRotary brush (29,30)ToThe conveyor (27,28)Width direction
alongOffset from each otherPowder to putProvide body distribution device
Things.AlsoRotary brush (29,30)Is theConveyor
(27,28) Can be moved in the width direction on topHoped to be
And the powder R ₁ , R _Two Is a mixture of wood reinforcement
It is desirable that the raw material mixture is a raw material mixture for a cement plate.

[0007]

1 to 4 show an embodiment of the present invention.
Shown in In FIG. 1, a large number of stencils (1) are placed on a conveyor and conveyed in the direction of the arrow to form a surface mat forming device (3), a first core layer mat forming device (4), and a second core layer mat. Forming device (5) and back layer mat forming device (6) are sequentially introduced into the forming plate (1), and are composed of a surface layer mat, a first core layer mat, a second core layer mat, and a back layer mat on the template (1). The mat M having a four-layer structure is formed.

At the upper end of each forming device (3, 4, 5, 6), a material receiving port (3A, 4A, 5A, 6A) is provided, and the material of each forming device (3, 4, 5, 6) is provided. receptacle (3A, 4A, 5A, 6A) raw <br/> material mixture placed on the horizontal upper surface of the raw material supply conveyor (27, 28) to (powder) R _1, R ₂ are distributed, drawers Injected via conveyors (15,16,17,18).

Rotating brushes (29, 30) as shown in FIGS. 3 and 4 are used for distributing and charging the raw material mixtures R ₁ and R ₂ . The rotating brush (29, 30) is connected to the material supply conveyor (27, 2).
8) The raw material supply conveyors (27, 28) are arranged directly above the drawer conveyor (15) of the surface mat forming device (3) and the drawer conveyor (17) of the first core layer mat forming device (4). Frames (31, 32) are supported by brush frames (33, 34) mounted on top.

That is, a pair of upper and lower guide bars (35, 36, 37, 38) is provided horizontally on the brush frame (33, 34), and the guide bars (35, 36, 37, 38) support the brushes. Frame (39,40)
The screw bar (41, 42) is screwed into the brush support frame (39, 40) from the side of the brush support frame (39, 40), and the screw bar (41, 42) is (Four
The brush support frame (39, 40) is driven and rotated by the motor (43, 44) in the width direction shown by the arrow in FIG. 4 by the guide bars (35, 36, 37, 38). Is slidable along the right and left.

A motor (47, 48) is mounted on the brush support frame (39, 40) via a vertical sliding bracket (45, 46), and the motor (47, 48) has a rotating shaft. The shafts (49, 50) of the rotating brushes (29, 30) are connected. In this way, the rotating brushes (29, 30) are rotated by the motors (47, 48), respectively, and the handles (51, 52) of the vertical sliding brackets (45, 46) are rotated to adjust the vertical position. I'm sullen.

Further, a brush cleaning plate (53, 54) is mounted on the brush support frame (39, 40) via a bracket (55, 56), and the brush cleaning plate (53, 54) is an air cylinder. (57, 58) makes contact with or separation from the rotating brush (29, 30). Further, a pair of front and rear inner raw material shielding plates (59, 60) and outer raw material shielding plates (61, 62) are attached to the frame (31, 32), and the inner raw material shielding plates (59, 60) are provided. The opening angle between the inner raw material shielding plate (61, 62) and the outer raw material shielding plate (61, 62) can be adjusted by an adjustment bolt (63). The adjustment smoothes the flow of the raw material mixture R ₁ , R ₂ .

In order to supply the raw material mixtures R ₁ and R ₂ on the raw material supply conveyors (27, 28) to the backing mat forming device (6) and the second core mat forming device (5), At the end of the material supply conveyor (27, 28), a horizontal rotating brush (64, 65) is attached.

In the above structure, the raw material mixture R for the front and back layers
₁ is a raw material mixture R for a core layer on a raw material supply conveyor (27).
₂ is supplied onto a raw material supply conveyor (28) disposed below the raw material supply conveyor (27), and is conveyed in the direction of arrow A in FIGS. 1, 2 and 3.

The rotating brushes (29, 30) slide the brush supporting frame (39, 40) right and left along the guide bars (35, 36, 37, 38) by forward and reverse rotation of the motors (43, 44). Thus, the conveyor (27, 28) is set at a predetermined position in the width direction, and the handle (51, 52) of the vertical sliding bracket (45, 46) is rotated to adjust the vertical position. By rotating the motors (47, 48), the rotating brushes (29, 30) are rotated in the direction of arrow B in FIG. Then the horizontal of the raw material feed conveyor (27, 28)
The raw material mixtures R ₁ and R ₂ placed on the upper surface are scraped off on the draw-out conveyors (15, 17) by the rotating brushes (29, 30) and formed through the draw-out conveyors (15, 17). The raw material mixtures R ₁ , R ₂ are respectively supplied into the raw material receiving ports (3A, 4A) of the apparatus (3, 4), and then the raw material mixture R ₁ , R ₂ is placed on the raw material scattering conveyor (19, 20) in the forming apparatus (3, 4). Fall,
After being smoothed and loosened by the group of brushes (23, 24), the surface mat and the first core layer mat are formed by spreading on the template (1) on the conveyor (2).

The horizontal upper surface of the material supply conveyor (27, 28)
The raw material mixtures R ₁ and R ₂ placed on the
9, 9), the nodules contained in the raw material mixtures R ₁ and R ₂ are loosened. The scattering of the scraped raw material mixture R ₁ , R ₂ around the inner and outer raw material shielding plates (59,
60,61,62). The rotating brush (29, 30)
The raw material mixture R _1, scraping the amount of R ₂ on the conveyor to be overlooked off by the rotating brush (29, 30) shown in FIG. 2
It is proportional to the length d ₁ , d ₂ of the surface raw material mixture R ₁ , R _{2 in} the width direction . Thisゝthe rotating brush (29, 30) successful <br/> the raw material mixture R ₁ of the conveyor upper surface is scraped by the, the width direction of the R ₂
Length d ₁ , d ₂ is the raw material mixture R on the conveyor (27, 28)
₁ and R ₂ are set to be smaller than the width directions D ₁ and D ₂ , respectively. That is, d ₁ <D ₁ and d ₂ <D ₂ . Then, the raw material mixtures R ₁ , R ₂ which were not scraped off by the rotating brushes (29, 30) are in the width direction of D ₁ −d ₁ , D ₂ −d ₂ .
The remaining raw material mixture R ₁ , R ₂ is left on the conveyor (27, 28) in a length (raw material remaining width), and the remaining raw material mixture R ₁ , R ₂ is formed by a rotating brush (64, 65) at the end of the conveyor (27, 28). It is supplied onto the raw material dispersion conveyor (21, 22) of 6) through the drawer conveyor (18, 16). Raw material mixtures R ₁ and R ₂ are supplied onto the forming device (5, 6) in an amount corresponding to the length in the width direction (raw material remaining width) of D ₁ -d ₁ and D ₂ -d _2. .

[0017] Therefore raw <br/> charges each of the weight of the spray conveyor (19, 20, 21, 22) the raw material mixture R ₁ supplied onto, R ₂ each forming device (3, 4, 5, 6) And / or the thickness is detected, the detected value is input to a controller, and the detected value is converted into the amount of movement of the rotating brush (29, 30) in the controller to drive the motor (43, 44) forward or backward. The width direction of the raw material mixture which is rotated and thereby scraped off by the rotating brushes (29, 30)
The lengths d ₁ and d _{2, that} is, the scraping amount are adjusted. In this way, the surface mat, first core layer mat, second core layer mat, and back layer mat can be adjusted to a predetermined weight (kg / m ² ) and / or thickness (mm).

The weight of the mat is detected by, for example, a differential transformer or the like, and the thickness of the mat is detected, for example, photoelectrically. The rotating brushes (29, 30) are cleaned by periodically operating the air cylinders (57, 58) and pressing the brush cleaning plates (53, 54).

The present invention is naturally applicable not only to the distribution of the raw material mixture for the wood cement board, but also to the distribution of powder such as ceramic powder, metal powder, and grain powder. Also, a plurality of rotating brushes may be arranged on one conveyor,
In this case, it is necessary to arrange the rotating brushes so that the scraping positions of the rotating brushes are shifted from each other so that each rotating brush necessarily scrapes the remaining powder.

[0020]

According to the present invention, since the powder on the conveyor is scraped off with a rotating brush and distributed, even if there is a lump in the powder, the lump is loosened by the rotating brush. When it is a raw material mixture for wood cement board,
A mat having a uniform density and thickness is formed on the template.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 4 show an embodiment of the present invention.

FIG. 1 is a schematic side view of a forming apparatus.

FIG. 2 is a plan view of each of upper and lower conveyors.

FIG. 3 is an explanatory view of a rotary brush part longitudinal sectional view.

FIG. 4 is an explanatory view of a cross section of a rotating brush part.

FIG. 5 is a schematic side view of a conventional example.

[Explanation of symbols]

Type 1 plate 3,4,5,6 forming apparatus 3A, 4A, 5A, 6A raw socket 27, 28 raw material supply conveyor 29,30 rotary brush R _1, R ₂ raw material mixture (powder) d _1, d ₂ scraped overlooked Width direction of the raw material mixture
Length D ₁ , D ₂ Width of raw material mixture in the width direction

Claims (3)

(57) [Claims] 1. A consists of a conveyor for conveying by placing the powder on a horizontal upper surface, and one or more rotating brush having a rotation axis in the longitudinal direction are disposed on the conveyor, one times <br /> conveyor upper surface which is scraped off by the rotation brush of the powder
The length in the width direction is the width of the powder placed on the top of the conveyor.
Direction, and when a plurality of the rotating brushes are mounted, each rotating brush is attached to the conveyor.
Powder dispensing apparatus according to claim placement to isosamples shifted each other along the width direction of the " 2. The powder distributing apparatus according to claim 1, wherein said rotating brush is movable on said conveyor in a width direction. 3. The powder distribution device according to claim 1, wherein the powder is a raw material mixture for a cement board mixed with a wood reinforcing material.