CN201524772U

CN201524772U - Vertical even core

Info

Publication number: CN201524772U
Application number: CN2009202412119U
Authority: CN
Inventors: 陈祖侃; 张艺民; 王建功; 唐为农
Original assignee: Taicang Linfei Foundery Co Ltd
Current assignee: Taicang Linfei Foundery Co Ltd
Priority date: 2009-10-30
Filing date: 2009-10-30
Publication date: 2010-07-14
Anticipated expiration: 2019-10-30

Abstract

The utility model discloses a vertical even core which comprises an even core body and an even core head used for supporting the even core body, wherein the even core head is in a conical shape so as to be conveniently located in the mould closing process, the diameter of the even core head at the upper part of the even core body is smaller than that of the even core body, and a circle of plane is formed at the periphery of the even core head of the connecting part of the even core head at the upper part and the even core body, therefore, in the mould closing process, loose sands generated by friction between the even core head and an upper sand mould can accumulate on the plane and can not drop in a mould cavity, thereby preventing sand holes from being formed on the inner wall of cast holes and ensuring the quality of castings.

Description

A kind of vertical mud core

Technical field

The utility model relates to a kind of mould that guarantees dimensional accuracy and casting quality, is specifically related to a kind of vertical mud core.

Background technology

In the prior art, to the blowhole on the foundry goods horizontal plane, commonly used carrying to cod or place vertical mud core form.Use carries cods, and then positioning accuracy is not high, presses when avoiding mould assembling and collapses, so the reservation fash is thicker.Place vertical mud core, the mud core print is tapered, and tapered slope forms guiding surface, the positioning accuracy in the time of can improving top box, reduce the thickness of fash, but the mud core print can produce friction with top box during mould assembling, causes drop, and loose sand is gone in the die cavity along the outer surface landing of mud core print, when casting, loose sand remains in the blowhole inwall, forms sand hole, reduces the quality of foundry goods.

Summary of the invention

The purpose of this utility model is to provide a kind of vertical mud core that forms a circle plane around the mud core print, and the loose sand that this plane falls in the time of can piling up mould assembling prevents that loose sand from falling into die cavity.

In order to reach above purpose, the technical solution adopted in the utility model is: a kind of vertical mud core, comprise mud core body, be used to support the mud core print of described mud core body, described mud core print is tapered, the diameter of the mud core print on described mud core body top is littler than the diameter of described mud core body, forms a circle plane in the mud core print and the described mud core body joint on described top around this mud core print.

The width on a described circle plane is 40mm.

Because the utility model has adopted above technical scheme, its advantage is: the mud core print is tapered, the location of mud core print when making things convenient for mould assembling, by around the mud core print, having formed a circle plane, during mould assembling, fricative loose sand can be piled up in the plane between mud core print and the last sand mold, can not fall in the die cavity like this, prevent to form sand hole, guaranteed casting quality at the blowhole inwall.

Description of drawings

Accompanying drawing 1 is for forming the schematic diagram of core shell of the present utility model.

The specific embodiment

Further set forth concrete structure of the present utility model below in conjunction with accompanying drawing.

Referring to shown in Figure 1, the vertical mud core that core hull shape among Fig. 1 becomes, comprise mud core body 1, be used to support the mud core print 2 of mud core body 1, mud core print 2 is placed in the core print seat on the sand mold, and this vertical mud core is used to form the blowhole on the foundry goods horizontal plane, and mud core print 2 is tapered, this tapered slope matches with inclined-plane on the core print seat, by the guide effect on inclined-plane, be convenient to mud core print 2 and enter in the core print seat, improve the positioning accuracy of mud core print 2.The mud core print 2 on mud core body 1 top is up-small and down-big, and the diameter of the mud core print 2 on mud core body 1 top is littler than the diameter of mud core body 1, forms a circle plane in top mud core print 2 and mud core body 1 joint around mud core print 2.The width on this circle plane is 40mm, and when sand mold mould assembling up and down, the mud core print 2 on top produces friction with core print seat on the last sand mold, the loose sand that forms can be deposited on the mud core print 2 circle plane on every side, can not fall into die cavity, prevent to form sand hole, guarantee casting quality at the blowhole inwall.The mud core print 2 of mud core body 1 bottom is tapered equally, up big and down small, and the diameter of mud core print 2 maximums is identical with the diameter of mud core body 1, and mud core body 1 is placed in down in the core print seat of sand mold by the mud core print 2 of bottom.

Claims

1. vertical mud core, comprise mud core body, be used to support the mud core print of described mud core body, described mud core print is tapered, it is characterized in that: the diameter of the mud core print on described mud core body top is littler than the diameter of described mud core body, forms a circle plane in the mud core print and the described mud core body joint on described top around this mud core print.

2. a kind of vertical mud core according to claim 1 is characterized in that: the width on a described circle plane is 40mm.