JPH0628849B2 - Forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a forming apparatus used in dry manufacturing of an inorganic molded plate having a concavo-convex pattern formed on the surface thereof, for example.

[Conventional technology]

A conventional example is shown in FIG. In the forming apparatus shown in the figure, (1) is a forming chamber, a conveyor belt conveyor (2) at the bottom of the forming chamber (1)
A template (3) having an uneven pattern (3) A on the surface is arranged on the top,
The template (3) is conveyed in the direction of arrow A by the conveyor belt conveyor (2). A supply belt conveyor (4) is arranged above the template (3), a spraying roll (5) is arranged on the upper side and a cleaning brush (6) is arranged on the lower side at the end of the supply belt conveyor (4). ing. A blower (72) housed in a casing (71) is provided on the template plate (3) conveyance direction side (post-stage side) of the forming chamber (1), and a duct (74) is provided to the blower (72). An air blower consisting of a pair of upper and lower air blow ports (73), (73) that communicate with each other.
(7) is arranged, and the blower ports (73) and (73) are in the forming chamber (1) in the direction opposite to the conveying direction of the template (3) (front side).
The forming chamber (1) has a blower port (73), (7) on the opposite side of the template (3) in the conveying direction.
A circulation path (8) that collects the air blown from 3) and circulates it in the blower (72) is opened, and further inside the forming chamber (1), it faces the blower ports (73), (73). The screen frame (9) is installed so that the tilt angle can be adjusted and the front and rear can be moved.

In the forming device, for example, the mixed powder of cement and wood fibers (10) is conveyed in the arrow B direction on the supply belt conveyor (4), and the arrow C direction at the end of the supply belt conveyor (4). Forming chamber for loosening the mixed powder (10) by the spray roller (5) rotating in the direction of
(1) Drop it from the inner rear stage. Forming chamber
The mixed powder (10) that has fallen into the (1) is blown by the blower (7) of the blower (7).
3), (73) is oriented in the front direction by the wind blown in the direction of arrow D as shown by arrow E, and after being sieved by the sieve frame (9), it is further blown ports (73), (73 Finer powder (10) is selected by the wind blown from () and drops and deposits on the template (3) at the previous stage in the forming chamber (1), resulting in a coarser powder (10). Fall and accumulate on the template (3) at the rear stage in the forming chamber (1). And the coarsest powder (10) remains on the sieve frame (9) and falls from the upper side of the sieve frame (9) as shown by the arrow, and the template (3) at the final stage in the forming chamber (1). Deposit on top. The template (3) is a conveyor belt conveyor (2) as described above.
As it is conveyed from the front side to the rear side in the forming chamber (1), the finest powder is deposited on the template (3) at the lowest position, and the powder with coarser particle size goes up. Will be deposited. Thus, as shown in FIG. 5, the mat (10) A having a structure in which the grain size becomes finer as it goes downward is formed. The mat (10) A has a lower surface as a surface, and the surface of the mat (10) A has a template (3).
Thus, the uneven pattern (3) A derived from is formed.

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional forming apparatus, the convex portion (31) A of the concave-convex pattern (3) A of the template (3) serves as a barrier to the wind blown from the blower (7), and the convex portion (31) A It is difficult to fill the fine mixed powder (10) on the front side, and the coarse mixed powder (10) is exposed to the lower side of the mat (10) A to form the rough surface (11). As a result, there is a problem that a rough portion is formed on the surface of the mat (10) A and the uneven pattern on the surface is not sharply formed.

[Means for Solving the Problems]

The present invention, as a means for solving the above conventional problems,
A template (3) having an uneven pattern (3) A on its surface, a conveying means (2) for conveying the template (3) in a predetermined direction, and a powder placed above the template (3). Distributing means (4), disposed between the template (3) and the powder dispersal means (4) on the template plate (3) conveyance direction side, and the template plate (3) is conveyed in the reverse direction. A main air blower (7) for blowing air, and the template (3) arranged in the lower part on the opposite side to the conveying direction.
(3) The present invention relates to a forming device (1) including an auxiliary air blowing device (7) A for blowing air in the carrying direction.

[Operation] The template (3) is transported in a predetermined direction by the transport means (2), and at the same time, the powder (10) is sprayed on the template (3) by the powder spraying means (4). At this time, the powder (10) is blown from the conveying direction side (the rear side) of the template (3) by the main air blower (7) in the opposite direction (conveying direction) to the conveying direction of the template (3). It is oriented in the front stage and is wind-selected, and finer powder falls on the template (3) in the front stage, and coarser powder falls on the template (3) in the rear stage. The mat (10) B is formed, but the auxiliary blower (7) A is formed from the front side toward the rear side.
The fine powder (10) is oriented in the rearward direction just above the template (3) by the wind blown by. Therefore, the convex portion (31) A of the uneven pattern (3) A of the template (3) is the main blower (7).
Even if it becomes a barrier to the wind blown from, the auxiliary blower (7)
The fine powder (10) is also filled in the front side of the convex portion (31) A by the wind blown from A.

〔The invention's effect〕

Therefore, in the present invention, in the mat to be formed on the template, the lower surface, that is, the surface of the mat is provided with a fine structure by the fine powder, and the particle size becomes coarser by the coarse powder toward the upper part of the mat. Although provided, since there is no part where the fine powder is not filled in front of the convex portion of the uneven pattern of the template, a sharp uneven pattern is formed on the uniform and dense surface of the mat.

〔Example〕

The present invention will be described with reference to an embodiment shown in FIGS. 1 to 3. In the forming apparatus shown in the drawings, (1) is a forming chamber.
At the bottom of (1), a template (3) having an uneven pattern (3) A on the surface is arranged on a conveyor belt conveyor (2), and the template (3) is indicated by an arrow by the conveyor belt conveyor (2). It is transported in the b direction. A supply belt conveyor (4) is arranged above the template (3), a supply brush (5) is arranged on the upper side and a cleaning brush (6) is arranged on the lower side at the end of the supply belt conveyor (4). ing. An air blower (72) housed in a casing (71) on the template plate (3) conveyance direction side (rear side) of the forming chamber (1).
And a main blower (7) consisting of a pair of upper and lower blower ports (73), (73) communicating with the blower (72) via a distribution duct (74), and the blower port (73) is The forming chamber (1) is designed to blow air in the direction (front side) opposite to the direction in which the template (3) is conveyed.
A circulation path (8) for collecting the air blown from the blower port (73) and circulating it to the blower (72) is opened at the front side of the. Further, a duct (74) branched from the distribution duct (74) to the blower (72) is provided in the lower part of the front side of the forming chamber (1).
Auxiliary blower (7) A consisting of blower port (73) A communicating via A
Is arranged, and the blower port (73) A blows air to the rear stage side. The handles (75), (75) A are provided on the air blower opening (73) of the main air blower (7) and the air blower opening (73) A of the auxiliary air blower (7) A.
The air flow control valves (76) and (76) A operated by are installed. Further, in the forming chamber (1), a sieve frame (9) is installed so as to be capable of adjusting the inclination angle and moving back and forth, facing the blower port (73).

In the above forming device, the powder (10) is conveyed in the arrow B direction on the supply belt conveyor (4), and a spraying roll (5) rotating in the arrow C direction at the end of the supply belt conveyor (4). Then, the powder (10) is dropped from the rear stage in the loosening forming chamber (1). The powder (10)
Are, for example, cement, silicic acid-containing substances, curable inorganic powders such as gypsum, wood chips, wood flour, pulp, reinforcing materials such as wood fiber bundles,
A mixture of a small amount of water or the like, for example, if a reinforcing material that is made bulky by branching and / or bending and / or bending is used, loosening of the powder (10) by the spraying roll (5) is extremely difficult. It becomes easier to mold the powder (10) to the template
(3) Can be sprayed evenly on top. The powder (10) that has fallen into the forming chamber (1) is the main blower (7) first.
The air blown from the blower port (73) in the front direction shown by the arrow D is oriented in the front direction as shown by the arrow E, and after being sieved by the sieve frame (9), the blower port (73) Finer powder (10) is selected by the wind blown from the inside of the forming chamber (1)
(3) drops and deposits on the mold plate, and the coarser powder (10) drops and deposits on the template (3) in the lower stage in the forming chamber (1), but at this time, fine powder (10) Is slightly oriented in the rearward direction as indicated by the arrow J by the wind blown in the rearward direction indicated by the arrow G from the blower port (73) A of the auxiliary air blower (7) A immediately above the template (3). And the coarsest powder (10) is the sieve frame
It remains on (9) and falls from the top of the sieve frame (9) as shown by the arrow, and accumulates on the template (3) at the final stage in the forming chamber (1). Since the template (3) is transported from the front stage side to the rear stage side in the forming chamber (1) by the transport belt conveyor (2) as described above, the template on the template (3) is the finest at the bottom. The powder is deposited, and the powder having a coarser particle size is deposited as it goes up. Thus, as shown in FIG. 3, the mat 10 having a structure in which the grain size becomes finer as it goes downward is formed. In the mat (10) B, as described above, the fine powder (10) is directly above the template (3) and the blower port (7) of the auxiliary blower (7) A.
3) As it is oriented in the rearward direction slightly by the wind blown from A, the uneven pattern (3) on the template (3) as shown in Fig. 3
The fine powder (10) is filled also on the front side of the convex portion (31) A of A, and the conventional mat (10) A as shown in FIG.
The rough surface (11) such as is not formed. The mat (10) B is then pressed between the mold plates and cured to cure and become an inorganic molding plate. Normally, a similar forming device is installed upside down in the subsequent stage of the forming device, and the mat is formed.
(10) A mat is further laminated on B. In this case, the mat formed by the above-mentioned reversed forming device has a fine powder on the upper surface, and the particle size of the powder becomes coarser as it goes downward. Have a configuration. In this way, an inorganic molded plate having a rough interior and a dense front and back surfaces can be obtained.
Then, if an uneven pattern is also provided on the template contacting from above the mat, an inorganic molded plate having a sharp uneven pattern on the front and back surfaces can be obtained.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention,
FIG. 1 is a side view for explaining the apparatus, FIG. 2 is a plan view for explaining the apparatus, FIG. 3 is an explanatory view of a state of the formed mat, and FIG.
FIG. 5 is a side view for explaining a conventional apparatus, and FIG. 5 is an explanatory view of a state of a conventional formed mat. In the figure, (1) …… forming chamber (2) …… conveyor belt conveyor, (3) …… template, (3) A …… concave pattern, (4) …… supply belt conveyor, (7) …… Main air blower, (7) A ... auxiliary air blower, (9) ... sieve frame, (10) ... powder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsutomu Sasakihara 12 Shiodome-cho, Minato-ku, Aichi Prefecture, Nichiha Co., Ltd. Zon-Berke Beerund Grading Game. M. Bay. Ha. Und company. In the car game

Claims (1)

[Claims] 1. A template having an uneven pattern on its surface, a conveying means for conveying the template in a predetermined direction, a powder-dispersing means arranged above the template, the template and the powder. A main air blower which is disposed on the template conveying direction side between the spraying means and blows air in the template conveying reverse direction, and a main blower arranged on the lower side of the template conveying reverse direction in the template conveying direction. Forming device comprising an auxiliary air blowing device for blowing air