JPH01297187A - Method and apparatus for removing foreign matter - Google Patents

Abstract

PURPOSE:To blow away foreign matter without leaving damage on a surface of a plate by applying air to said surface obliquely, by arranging an air blow pipe in parallel to a conveyor for feeding a green sheet such as a building interior (exterior) material in the direction oblique with respect to the feed direction thereof. CONSTITUTION:An air blow pipe is arranged above a conveyor 2 for mounting and feeding a green sheet 9 so as to be parallel to the conveyor 2 in the direction oblique with respect to the feed direction 3 of the conveyor 2. When the green sheet 9 reaches the part below the air blow pipe 4, air 6 blows-off in the direction of 45 deg. with respect to the feed direction 3 from the jet orifices 5 bored in the air blow pipe 4. Further, when the green sheet 9 passes by about half in the longitudinal direction thereof, a turn cylinder 7 is operated to revolve the air blow pipe 4 by 90 deg. so that the air 6 obliquely impinges against the surface of the green sheet 9 at an angle of 45 deg. in the direction reverse to the feed direction of the conveyor 2.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention mainly relates to a method for removing foreign matter that adheres to the surface of a plate material such as an inorganic exterior material or an inorganic interior material during the manufacturing process;
This relates to a device for removing foreign matter, and is widely used mainly in the field of plate processing.

(Prior Art) This kind of conventional technology will be explained based on FIG. 4.

In the diagram, 1-1 is conveyor 1/lf conveyor 14K
Air blow tubes are arranged parallel to each other and perpendicular to the conveying direction +01 of the conveyor 1, and 2) is a brushing roll arranged parallel to the air blow tube V1. Foreign matter on the surface of the green sheet, which is a raw cement board placed on the conveyor 1A, is first blown away with the air jetted from the air blow tube 1. Then, the remaining foreign matter is removed by brushing row/L/l-J.

(Problems to be Solved by the Invention) In the above-mentioned conventional foreign matter removing device, when trying to almost completely remove foreign matter adhering to the surface of the green sheet (E), the air Blow tube 1/N
Air 1 to 1 spouted from and brushing low/l'
l:1. This method had the disadvantage that both the scraping method and the scraping method using IK had to be used in combination, making the entire device bulky. In addition, since it is used for Puffing Roll/L/l-J, maintenance such as replacing and cleaning the Puffing Roll (for Puffing Roll) is required.
There was a problem in that the surface of the green sheet (e) was scratched by the :l.

The present invention eliminates all of the drawbacks of the above-mentioned conventional techniques, and provides society with a highly novel and highly useful method and device for removing foreign matter, thereby contributing to the further advancement and development of this industry. We intend to make a contribution.

(Means for Solving the Problems) The foreign matter removal method of the present invention blows out foreign matter by jetting air obliquely to the conveying direction of a conveyor, and the foreign matter removal device of the present invention is a method that blows away foreign matter by blowing air obliquely to the conveyance direction of a conveyor. , and an air blow tube disposed parallel to the conveyor and obliquely to the conveyance direction of the conveyor.

(Example) Hereinafter, the foreign matter removing device of the present invention will be described in detail based on the example shown in FIG.

The present invention includes a conveyor (2) formed by stretching pet/L' Il+, and a conveyor (2) parallel to and parallel to the conveyor (2).
2)] This is a foreign matter removing device comprising an air glow tube 141 disposed obliquely with respect to the transport direction 31. The air blow pipe (4) has many blow holes 1.
5) is bored, and if necessary, air 161 is emitted from the jet hole 15) at an angle, preferably at 45 degrees, to the surface of the conveyor 12), and at an angle to the conveyance direction of the conveyor (2). The direction is preferably 45°.

In the figure, 17) is a turn cylinder that rotates the air blow tube 141 to change the direction of the ejection hole 15). Again 1
8) is a solenoid valve that opens and closes the valve when sending air from an air compressor (not shown) to the air blow pipe 14).

(How to use) Next, how to use the foreign matter removing device of the present invention will be explained.

From the paper making machine (not shown) to the making roll (not shown)
After that, the green sheet 19), which is a raw cement board formed to a certain thickness, is carried on a conveyor (2), and when it passes under the air glow tube +41, it is passed through the air blow tube. Nozzle hole 15 provided in 141
) Air 161 blows out. Air 161 at this time
The direction in which the air is ejected is oblique to the conveying direction 13 of the conveyor (2), preferably at an angle of 0, so that the air 161 hits the surface of the green sheet 191 obliquely. When the green sheet (9) has passed half of its length, the turn cylinder 177 is actuated to rotate the air blow tube 14) by 90 degrees, and the air 161 is rotated by 90 degrees.
The air 16) is ejected in the opposite direction to the conveyance direction of the conveyor (2), and in a diagonal direction, preferably at an angle of 45°, to the conveyance direction.
so that it hits the surface at an angle.

FIG. 2 is a drawing of a different embodiment of the foreign matter removal device of the present invention, in which the air blow pipes 14) are provided with blow holes 151 so that air +61 is blow out in opposite directions. It is something that exists.

FIG. 3 is a drawing of another different embodiment of the foreign matter removal device of the present invention, in which two air blow pipes 14) are arranged, and one air blow pipe 14) is connected to a conveyor 1.
Air 161 is ejected in the same direction as the conveyance direction 13) of 2), and from the other air blow pipe (4), the conveyor (
The air (61) is ejected in a direction opposite to the transport direction 13 of 2).

(Young fruit of the invention) Since the present invention is configured as described above, claim (1)
By using the described method for removing foreign matter, only the foreign matter can be reliably blown off to the outside of the conveyor without leaving any scratches on the green sheet, for example. Further, when the foreign matter removing device according to claim 27 is used, there is an effect that foreign matter can be blown away with an extremely simple mechanism.

l...Belt, 2...Conveyor, 3...11i feeding direction, 4...Air blow pipe, 5...Blowout hole, 6...
...Air, 7...Turn cylinder, 8...Solenoid valve, 9...Green sheet.

Claims (2)

[Claims] (1) A foreign matter removal method characterized by blowing away foreign matter by jetting air obliquely to the conveying direction of a conveyor. (2) A foreign matter removal device comprising a conveyor and an air blower disposed parallel to the conveyor and obliquely to the conveyance direction of the conveyor.