JPH115140A - Cleaning equipment for pattern plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb and remove effectively the molding sand sticking on a pattern plate without blowing off the sand around even if the pattern plate has the deep unevenness by arranging at the lower part of the manifold, many of the suspended sucking nozzles in succession corresponding to the length of unevenness of aforesaid plate. SOLUTION: A carrier 2 loading a pattern plate 1 with the molding sand travels on a roller conveyor 3 stops at a cleaning position and a precise position is set. An absorption fan 11 and a cylinder 6 are operated to make the absorption nozzle carry out their work. The carrier 2 stops when the absorbing nozzles 13, 13 and the like are lowered and the lower part of a cover material 12 touches around the upper parts of the pattern plate 1. The lower end of the many absorbing nozzles 13, 13 are positioned corresponding to the surfaces of the pattern plate, so that they absorb and remove the sticking mold sand. The absorbed and removed mold sand is exhausted by an absorbing fan 11 after being sucked by a manifold 8, an absorbing pipe 9 and a bellows shaped pipe 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing and cleaning molding sand adhering to the surface of a pattern plate after a sand mold is formed.

[0002]

2. Description of the Related Art Conventionally, removal of molding sand adhering to the surface of a pattern plate after molding a sand mold is generally performed by blowing a molding air onto a surface of a pattern plate by blowing compressed air. It is a target.

[0003]

In the cleaning of the pattern plate in which the molding air is blown to blow off the molding sand as described above, the molding sand is scattered around and the working environment is deteriorated, and the deep pocket is formed. There is a problem that the foundry sand entering into the part where is not able to be easily removed simply by turning at the same position even if the compressed air is sprayed. The present invention has been made in view of the above problems, and an object of the present invention is to provide a cleaning device that can reliably remove molding sand from a pattern plate having deep irregularities without scattering molding sand around. And

[0004]

In order to achieve the above object, a pattern plate cleaning apparatus according to the present invention is provided with a gantry provided above a roller conveyor for transporting a carrier on which a pattern plate is mounted. The manifold is suspended via a cylinder so as to be able to move up and down, the manifold is connected to a suction fan via a telescopic tube, and an opening corresponding to the upper peripheral edge of the pattern plate is provided at the lower peripheral edge of the manifold at the lower end. At the same time, a cover member whose upper end is closed by the lower surface of the manifold to form an inverted U-shaped cross section as a whole is attached, and a number of suction nozzles having a length corresponding to the irregularities of the pattern plate are connected and suspended below the manifold. It is characterized by having done.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. Above a roller conveyor 3 that conveys a carrier 2 on which a pattern plate 1 is fitted and mounted, a gantry 5 supported by legs 4 is provided. The gantry 5 is provided with a cylinder 6 facing downward, and a manifold 8 is fixed to a tip of a piston rod 7 of the cylinder 6. The upper part of the manifold 8 is connected to a suction fan 11 via a suction pipe 9 and a bellows pipe 10 as a telescopic pipe. The upper part of the manifold 8 expands and contracts as the manifold 8 moves up and down to maintain a communication state. I have. A cover member having an opening at the lower end on the outer peripheral edge of the lower end of the manifold 8 corresponding to the upper peripheral edge of the pattern plate 1 and closing the upper end with the lower surface of the manifold 8 to form an inverted U-shaped cross section as a whole. 12 are attached. Further, a number of suction nozzles 13, 13 having a length corresponding to the irregularities of the pattern plate 1 are suspended from the lower portion of the manifold 8, and the cover member 12 is in contact with the upper surface of the pattern plate 1. At this time, the lower ends of the suction nozzles 13 are located at a slight distance from the pattern plate 1 and are formed so as to be entirely uneven. The lower end of the cover member 12
It is bent inward to improve the adhesion to the pattern plate 1.

The operation of the apparatus having the above-described structure will be described. The carrier 2 on which the pattern plate 1 on which the casting sand has adhered after the molding operation is moved on the roller conveyor 3 and stopped at the pattern plate cleaning position as shown in FIG. Next, the suction fan 11 is operated to operate the suction nozzles 13, 13 via the bellows tube 10, the suction tube 9, and the manifold 8 to operate the suction nozzles 13, and the cylinder 6 is operated to operate the manifold 8, the cover member 12,
The suction nozzles 13 and 13 are lowered to bring the lower end of the cover member 12 into contact with the peripheral edge of the upper surface of the pattern plate 1 and stop. Thereby, the lower ends of the many suction nozzles 13 and 13 are positioned in a state corresponding to the uneven surface of the pattern plate 1,
The adhering foundry sand is removed by suction. The suction-removed molding sand is sucked by the suction fan 11 from the manifold 8, the suction pipe 9, and the bellows pipe 10, and is discharged. When the casting sand is removed by suction, the upper surface of the pattern plate 1 is sealed by the cover member 12 so that a large amount of air does not flow from the outside and the suction nozzles 13 and 13 are moved to the surface of the pattern plate 1. The suction function works effectively. Next, the cylinder 6 is operated in reverse to raise the manifold 8, the cover member 12, the suction nozzles 13, 13 and the like, and the operation of the suction fan 11 is stopped to return to the state shown in FIG. 3 and the molding work is performed again. Hereinafter, the above operation is repeated. In the above embodiment, the bellows tube 10 is used as the telescopic tube, but the same effect can be obtained even with a flexible hose connected to the take-up / draw-out device.

[0007]

According to the present invention, as is apparent from the above description, a vertically movable manifold having a plurality of suction nozzles having a length corresponding to the uneven surface of the pattern plate is connected to the suction fan via a telescopic tube or the like. In addition, the outer periphery of the suction nozzle is provided with a cover member that defines a closed space by contact with the pattern plate, so that the molding sand adhered to the pattern plate is not blown around and has a pattern with deep irregularities. Even a plate is effectively sucked and removed, which significantly contributes to cleaning of the pattern plate.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pattern plate 2 Carrier 3 Roller conveyor 5 Stand 6 Cylinder 8 Manifold 9 Suction tube 10 Bellows tube 11 Suction fan 12 Cover member 13 Suction nozzle

Claims (3)

[Claims] 1. A carrier 2 on which a pattern plate 1 is mounted.
A frame 5 is provided above the roller conveyor 3 for conveyance, and a manifold 8 is suspended from the frame 5 via a cylinder 6 so as to be able to move up and down. The manifold 8 is connected to a suction fan 11 via a telescopic tube. A cover member 12 having an opening corresponding to the periphery of the upper surface of the pattern plate 1 at the lower end outer peripheral edge of the manifold 8 and closing the upper end with the lower surface of the manifold 8 to form an inverted U-shaped cross section as a whole. And a suction nozzle 1 having a length corresponding to the unevenness of the pattern plate 1 below the manifold 8.
A pattern plate cleaning apparatus characterized in that a large number of units 3 and 13 are suspended. 2. A pattern plate cleaning apparatus according to claim 1, wherein said telescopic tube is a bellows tube. 3. The pattern plate cleaning device according to claim 1, wherein said telescopic tube is a flexible hose connected to a take-up / draw-out device.