CN201244659Y

CN201244659Y - Sand mold for casting automobile brake disk

Info

Publication number: CN201244659Y
Application number: CNU2008200279679U
Authority: CN
Inventors: 张海燕; 刘玉里; 王军; 孙亚顺
Original assignee: SHANDONG LONGJI MACHINERY CO Ltd
Current assignee: SHANDONG LONGJI MACHINERY CO Ltd
Priority date: 2008-09-08
Filing date: 2008-09-08
Publication date: 2009-05-27
Anticipated expiration: 2018-09-08

Abstract

The utility model discloses a sand mould for casting an automobile brake disc, which is mainly characterized in that an upper and a lower brake disc mould cavities (1) are both connected with two inner cavities, wherein, the two inner cavities are formed by abutting an upper sand mould and a lower sand mould, and the upper and the lower brake disc mould cavities (1) are formed by an upper sand core (2), a separating sand core (4) and a lower sand core (7); a downsprue (6) arranged above the upper sand mould between the two inner cavities is communicated with the upper and the lower brake disc mould cavities (1) through an upper and a lower inner spruces (5); and a vent hole (3) arranged above the upper sand mould is communicated with vent holes of the upper sand core (2), the separating sand core (4) and the lower sand core (7) which are connected with the inner cavities. Compared with the prior art, the two inner cavities are both provided with an upper and a lower one-piece brake disc casting mould cavity structures, so each group of sand moulds can cast four brake discs simultaneously, and the production efficiency can be obviously improved and the labor intensity of workers can be lowered; the ratio of the required molten iron for casting feeder heads to the required molten iron for casting brake discs drops by 50 percent, the utilization rate of the sand mould can be improved, and the casting production cost can be effectively reduced.

Description

The sand mold of casting of automobile brake disc

(1) technical field: the utility model relates to the cast moulding tool; Be specifically related to a kind of sand mold of casting of automobile brake disc.

(2) background technology: the sand mold of casting of automobile brake disc in the prior art normally constitutes two brake disc die cavities that are the spacing arrangement by involutory joining of upper and lower sand mold.It exists not enough: the one, and two brake disc production efficiencys of every group of sand casting are low, increased operator's labour intensity; The 2nd, the ratio that the required molten iron of casting pressing port takies casting brake disc required molten iron is big, usually about 10% and the casting sand utilization rate low, increased the Foundry Production cost.

(3) summary of the invention: at the deficiency that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of enhancing productivity, and reduces the sand mold of the casting of automobile brake disc of labour intensity and production cost.

For achieving the above object, the sand mold technical scheme of the utility model casting of automobile brake disc is achieved in that the core that comprises upper and lower sand mold and place its inner chamber; Its improvement is: form in two inner chambers that are the spacing arrangement in involutory joining of upper and lower sand mold, be connected with the upper and lower brake disc die cavity that core, isolation core and following core constitute; Above the sand mold, be provided with sprue and be communicated with upper and lower brake disc die cavity between described two inner chambers by upper and lower ingate; The venthole that described upward sand mold is provided with above is communicated with last core, isolation core and the following core venthole that its inner chamber joins.

The utility model is by being equipped with the casting mold cavity structure of upper and lower disjunctor at above-mentioned two inner chambers, realized that every group of sand mold can cast four brake discs simultaneously.Compare with prior art, obviously enhance productivity and reduced working strength of workers; The ratio that the required molten iron of casting pressing port takies the required molten iron of casting brake disc has descended 50%, and has improved the utilization rate of molding sand, has reduced the Foundry Production cost effectively.

(4) description of drawings: Fig. 1 is a sectional front view of the present utility model;

Fig. 2 is the amplification stereogram of the utility model casting brake disc blank.

(5) specific embodiment: Fig. 1-shown in Figure 2.The sand mold of this casting of automobile brake disc comprises upper and lower sand mold and places the core of its inner chamber; Form in two inner chambers that are the spacing arrangement in involutory joining of upper and lower sand mold, all be connected with the upper and lower brake disc die cavity 1 that core 2, isolation core 4 and following core 7 constitute; Above the sand mold, be provided with sprue 6 and be communicated with upper and lower brake disc die cavity 1 between described two inner chambers by upper and lower ingate 5; Be provided with venthole 3 above the described last sand mold, be communicated with (shown in Figure 1) with last core, isolation core 4 and the following core venthole that its inner chamber joins.During the utility model work, the casting molten iron enters in four brake disc die cavities 1 by upper and lower ingate 5 through sprue 6.Casting finishes, and eliminates the molding sand of upper and lower sand mold, can finish four conjuncted automobile brake disc cast blank spares (shown in Figure 2).

The above only is a preferred implementation of the present utility model.Be noted that for the person of ordinary skill of the art; under the prerequisite that does not break away from the principle of the invention; need not other technical characterictic that the process creative work just can be associated; can also make some modification and/or improvement; these variations obviously all should be considered as equivalent feature, all belong within the protection domain of the utility model patent.

Claims

1, a kind of sand mold of casting of automobile brake disc comprises upper and lower sand mold and places the core of its inner chamber; It is characterized in that: form in two inner chambers that are the spacing arrangement in involutory joining of upper and lower sand mold, all be connected with the upper and lower brake disc die cavity (1) that core (2), isolation core (4) and following core (7) constitute; Above the sand mold, be provided with sprue (6) and be communicated with upper and lower brake disc die cavity (1) between described two inner chambers by upper and lower ingate (5); The venthole (3) that described upward sand mold is provided with above is communicated with last core, isolation core (4) and the following core venthole that its inner chamber joins.