JPH03120941U

JPH03120941U -

Info

Publication number: JPH03120941U
Application number: JP2754790U
Authority: JP
Priority date: 1990-03-16
Filing date: 1990-03-16
Publication date: 1991-12-11
Anticipated expiration: 2005-03-16
Also published as: JPH0713895Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示す一部切欠断
面正面図、第２図は本考案の第２実施例を示す一
部切欠断面正面図である。６……吹出口、７……フレーム、８……カバー
、９……シリンダ、９ａ……ピストンロツド、１
０……弁、１１，３１……ブラケツト、１２，３
３……圧縮コイルばね、１８……模型板、１９…
…鋳枠、３２……ロツド、３４……カラー。 FIG. 1 is a partially cutaway sectional front view showing a first embodiment of the present invention, and FIG. 2 is a partially cutaway sectional front view showing a second embodiment of the present invention. 6...Air outlet, 7...Frame, 8...Cover, 9...Cylinder, 9a...Piston rod, 1
0...Valve, 11,31...Bracket, 12,3
3... Compression coil spring, 18... Model board, 19...
...Cast flask, 32...rod, 34...color.

Claims

[Claims for Utility Model Registration] 1. After casting molding sand is placed in a molding flask 19 placed on a model plate 18 with a vent hole, compressed air is blown onto the surface of the molding sand and allowed to flow through the molding sand. This is a compressed air blowing device for green mold making equipment, which pre-compresses foundry sand by discharging it from the flask, and then compresses the foundry sand with a squeeze plate to mold a green mold, the air blowing device having an upper end opening of the flask 19. A surface plate-like frame 7 is provided which can be closed and has a compressed air outlet 6 transparent thereto facing the upper end opening of the flask 19, and a cover which together with the frame 7 forms a compressed air storage tank is provided on the frame 7. A cylinder 9 is mounted on the cover 8 in an airtight manner with the air outlet 6 located inside, and a cylinder 9 is mounted on the cover 8, the piston rod 9a of which penetrates the ceiling wall of the cover 8 in an airtight manner and capable of vertically sliding.
A valve 10 capable of closing the air outlet 6 is elastically supported at a lower position of the piston rod 9a by a compression coil spring that allows it to move up and down a required distance and has a repulsive force of a required magnitude. A compressed air blowing device for green molding equipment, characterized in that it is installed in a state in which 2. A valve 10 capable of closing the air outlet 6 is attached to the lower part of the piston rod 9a so as to be movable up and down a required distance via a bracket 11, and further,
The green molding according to claim 1, characterized in that a compression coil spring 12 having a repulsive force of a required magnitude is wound around a position between the lower end of the piston rod 9a and the lower surface of the bracket 11. Compressed air blowing equipment in equipment. 3. A bracket 31 is fixed to the lower part of the piston rod 9a, and a rod 32 is attached to this bracket 31.
, 32 are mounted so as to be movable up and down, and a compression coil spring 33 having a repulsive force of a required magnitude is wound around a position above the bracket 31 on each rod 32, and the air outlet 6 is attached to the lower end of each rod 32. A valve 10 that can be closed is fixed, and each rod 32 is
2. The compressed air blowing device for green molding equipment according to claim 1, further comprising a collar (34) of a required length installed at a position between said bracket (31) and said valve (10).