Molding machine and a pattern carrier used therefor

a molding machine and pattern technology, applied in the direction of moulding machines, manufacturing tools,foundry moulding apparatus, etc., can solve the problems of high cost, large and high cost of related facilities, so as to reduce the amount of sand spillage or scraps, the effect of low cost and easy replacemen

Inactive Publication Date: 2006-05-25
SINTOKOGIO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] Another object of this invention is to supply a molding machine and pattern carrier wherein the generation of spills or scraps of sand is reduced, and wherein foundry sand is homogenously compressed at a low cost.
[0007] A further object of this invention is to supply a compact pattern plate carrier with an auxiliary flask that can be easily replaced.

Problems solved by technology

This method has some problems in that since it needs large-sized cylinders the height of a molding machine used for them becomes high and the related facilities, such as a pit, cost a lot accordingly.
This method has also some disadvantages in that since in it, wherein an auxiliary flask on which a molding flask is put is put on the upper part of a pattern plate, the foundry sand thrown into the molding space to fill it must be smoothed prior to compression, so that a lot of spilled sand may be generated, and so that uneven compression or an uneven compressed surface may occur.
Therefore, a lot of time and labor are needed to deal with such disadvantages.
Further, there is also a problem in that to remove the piping of the air cylinder the replacement of the pattern plate carrier with an auxiliary flask is very troublesome.

Method used

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  • Molding machine and a pattern carrier used therefor
  • Molding machine and a pattern carrier used therefor
  • Molding machine and a pattern carrier used therefor

Examples

Experimental program
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first embodiment

[0025] Referring to FIG. 1, now we explain the molding machine of this invention. The molding machine comprises a pattern plate 31 fixed horizontally, a lower subsidiary flask 32 that surrounds the periphery of the pattern plate 31 and that is disposed such that it can be both slid and moved up and down, a molding flask 33 that is disposed above the lower subsidiary flask 32 so as to be moved up and down, an upper subsidiary flask 34 disposed above the molding flask 33 so as to be moved up and down, and the squeeze feet 48 of the compressing means 35, which are disposed so as to be movable up and down above the molding flask 33 such that their ends can reach within an area surrounded by the upper subsidiary flask 34.

[0026] The pattern plate 31 is mounted on the upper surface of a turntable 49, described below. In the upper surface of the pattern plate 31, vent-plugs (not shown) are embedded according to the shape of the pattern plate. The lower subsidiary flask 32, mounted on the tu...

second embodiment

[0033] Now we explain this invention by referring to FIGS. 2-10.

[0034] In FIG. 2, upward flask-setting cylinders 2,2 are mounted on a molding base 1, and a frame 3 for supporting the lifting movement of molding members bridges the rods 2A,2A of the cylinders 2,2. A pattern-replacing device 4 for alternatively transporting a pattern carrier 6,6A (see FIG. 9), on which a pattern plate 5,5A is to be mounted, is disposed above the molding base 1 in a direction perpendicular to the left and right directions of the flask-setting cylinders 2,2. The pattern-replacing device 4 is disposed so as to be movable perpendicular to the face of the drawing by an actuator (not shown).

[0035] A pattern carrier 6,6A, on which a pattern plate 5,5A (an upper and lower pattern plates) is to be mounted, is mounted on both sides of the pattern-replacing device 4 such that the pattern carrier 6,6A is in a raised state by about 5 mm through a spring (not shown), and such that the pattern plate 5,5A is alterna...

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Abstract

In a molding machine, foundry sand thrown into a molding space defined by a pattern plate and flask members is compressed in two steps. Namely, in the first step a lower subsidiary flask is stationary while in the second step the flask is movable. The pattern carrier molding machine comprises a molding base, flask-setting cylinders, a lift-support frame, and a segment-squeeze sand hopper. The auxiliary flask 62 of the compact pattern-plate carrier is installed movably up and down through a plurality of upward oil cylinders 63,63 that are expanded / contracted via special oil cylinders 64,65 operated by outside cylinders 68,69.

Description

RELATED APPLICATIONS [0001] This application is a divisional of U.S. application Ser. No. 10 / 968,999, filed Oct. 21, 2004, which is a divisional of U.S. application Ser. No. 10 / 018,569, filed Dec. 20, 2001 and now U.S. Pat. No. 6,823,929, which is a §371 of PCT / JP01 / 03262 filed Apr. 17, 2001, the contents of all of which are incorporated herein by reference.TECHNICAL FIELD [0002] This invention relates to a method and apparatus for compressing foundry sand in a molding space. It also relates to a molding machine equipped with a flask and a pattern carrier, wherein upper and lower mold halves are alternately molded for each empty mold half carried therein. In particular, it relates to improvement in the pattern plate carrier with an auxiliary flask carried along with a pattern plate. BACKGROUND OF THE INVENTION [0003] Conventionally, foundry sand has been compressed in a molding space formed between a pattern plate and molding flask by having the pattern plate and compressing means a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B22C15/02B22C21/02
CPCB22C15/08B22C21/02
Inventor KANETO, KIMIKAZUHIRATA, MINORUHADANO, YUTAKA
Owner SINTOKOGIO LTD
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