CN202741691U

CN202741691U - Planar sand bottom box for casting resin sand

Info

Publication number: CN202741691U
Application number: CN 201220313900
Authority: CN
Inventors: 黄慧; 王�琦; 张俊杰
Original assignee: 黄慧
Priority date: 2012-07-02
Filing date: 2012-07-02
Publication date: 2013-02-20
Anticipated expiration: 2022-07-02

Abstract

The utility model relates to the technical field of a planar sand bottom box for casting resin sand, which is characterized by consisting of an annular sand box frame, a sand box belt welded on the lower part of the annular sand box frame, a refractory brick cast on the sand box belt and resin sand filled on the refractory brick. The planar sand bottom box provided by the utility model has the advantages that the structure of the planar sand bottom box for casting resin sand effectively reduces the dosage of the resin sand to avoid the sand dropping phenomenon cased by bad hardening of the resin sand due to over thickness of the sand box, the sand box belt skeleton is welded on the bottom part of the annular sand box frame, the refractory brick is built by refractory mortar, the refractory brick on the bottom part of the sand box can not only resist against thermal impact, but also completely bear the weight of a sand core on the upper part of the planar sand bottom box, besides, the casting sand box filed in the resin sand of the planar sand bottom box utilizing the structure can be immediately moved away, so that the production efficiency is greatly improved.

Description

Resin sand casting plane sand under casing

Technical field

The utility model belongs to a kind of casting sandbox, is specifically related to a kind of resin sand casting plane sand under casing.

Background technology

In the resin sand casting, because core assembly process has and not usually be used by the advantages such as restriction of casting structure and sandbox size, the technological process of general core assembly process be produce a plane sand with sandbox first at the bottom of, then core assembly at the bottom of the sand of plane is imbedded floor sand behind the outer race cope of fuse.

Owing to being the benchmark of core assembly at the bottom of the sand of plane and carrying all cores, therefore require at the bottom of the sand of plane smooth solid, preparation method at the bottom of the sand of plane is to put the sandbox of sandbox band at platform at present, then put into resin sand, mould turnover after the resin sand sclerosis, at the bottom of the plane sand that this method is produced usually because the not good generation drop phenomenon of resin sand sclerosis, do sandbox very thickly in order to prevent only having of drop phenomenon, waste a large amount of resin sands, also affected production efficiency owing to resin sand firm time length can not make sandbox remove simultaneously.

Summary of the invention

The purpose of this utility model provides high, the simple to operate resin sand casting plane sand under casing of a kind of production efficiency.

The purpose of this utility model realizes by following technical proposals:

A kind of resin sand casting of the present utility model is characterized in that by the ring-shaped sand box-frame with plane sand under casing, is welded on the sandbox band of ring-shaped sand box-frame bottom, builds casting and forms at this refractory brick above sandbox band and the resin sand that is filled in above the described refractory brick.

The height of described refractory brick is 1/2 or 2/3 of ring-shaped sand box-frame height.

The utility model has the advantages that:

Owing to adopted above-mentioned resin sand casting plane sand under casing structure, effectively reduced the use amount of resin sand, thereby avoided doing very thickly because of sandbox, the not good generation drop phenomenon of resin sand sclerosis, simultaneously because at ring-shaped sand box-frame bottom welding sandbox band skeleton, and build refractory brick with fire clay, the refractory brick of the bottom of its sandbox not only can prop up thermal shock, and the weight that can bear sand under casing top, plane core fully, adopt in addition the plane sand under casing of this structure, casting sandbox behind the casting resin sand can be removed at once, thereby has improved productivity ratio widely.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

The specific embodiment

Below in conjunction with the description of drawings specific embodiment of the present utility model.

As shown in Figure 1 and Figure 2, a kind of resin sand casting plane sand under casing of the present utility model, it is characterized in that by ring-shaped sand box-frame 1, be welded on the sandbox band 2 of ring-shaped sand box-frame bottom, build casting and form with the resin sand 4 that is filled in above the described refractory brick 3 at this refractory brick 3 above sandbox band 2, strike off after resin sand is filled and just formed plane of the present utility model sand under casing; The height of described refractory brick 3 of the present utility model is 1/2 or 2/3 of ring-shaped sand box-frame 1 height.The resin sand of compared with prior art filling can be done very thinly, has not only saved a large amount of resin sand, but also has effectively avoided the generation of drop phenomenon, thereby improved widely productivity ratio.

Claims

1. a resin sand casting is characterized in that by the ring-shaped sand box-frame with plane sand under casing, is welded on the sandbox band of ring-shaped sand box-frame bottom, builds casting and forms at this refractory brick above sandbox band and the resin sand that is filled in above the described refractory brick.

2. resin sand according to claim 1 is cast with plane sand under casing, and the height that it is characterized in that described refractory brick is 1/2 or 2/3 of ring-shaped sand box-frame height.