CN201565554U

CN201565554U - Sand mold for casing automobile braking disc marks

Info

Publication number: CN201565554U
Application number: CN2009202246227U
Authority: CN
Inventors: 张海燕; 刘玉里; 王军; 崔积暖
Original assignee: SHANDONG LONGJI MACHINERY CO Ltd
Current assignee: SHANDONG LONGJI MACHINERY CO Ltd
Priority date: 2009-08-11
Filing date: 2009-08-11
Publication date: 2010-09-01
Anticipated expiration: 2019-08-11

Abstract

The utility model discloses a sand mold for casing automobile braking disc marks as shown in the accompanying drawing on the right side. The sand mold for casing the automobile braking disc marks is characterized in that a prefabricated sand mold 5 and a sand core 6 are placed in a lower sand mold 8, an upper sand mold 7 is closed for forming a required braking disc die cavity 4, a direct casting passage 1, an inner casting passage 2 and an air outlet 3 which are arranged on the upper sand mold 7 are communicated with the braking disc die cavity 4. During the casting, casting molten iron passes through the direct casting passage 1 and the inner casting passage 2 to be filled into the die cavity 4, the upper sand mold 7 and the lower sand mold 8 are opened after the casting is completed, and a required braking disc blank element can be completed after sand cleaning. After adopting the structure, the utility model has the advantages that because the sand molds have high sharpness, and the character style can be changed into a compact type, so the design requirement that required continuous grooves with sufficient spaces between adjacent grooves can be cast on the contact surface of a product with a wheel rim or continuous grooves are made in the minimum circumferential range of the hole diameter of a bolt hole can be met, in addition, the problems that rejected products of the products can be caused by difficult character loss on the sand molds in the mechanical molding process, the characters are not clear, the back tracing and right-safeguarding functions cannot be met, and the waste is generated through the projection of the products can be eliminated, and the production cost of casting elements is obviously reduced.

Description

The sand mold of casting of automobile brake disc sign

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

(2) background technology: main engine plants are in order to review and right-safeguarding, requirement embodies the uniqueness mark on correlated parts, in the prior art, the sign of casting of automobile brake disc several groups of English of casting or numeral identification (Fig. 2, Fig. 3) near the construction bolt circumference normally when the brake disc user mode and on contacted of the wheel rim, content is generally divided: secure ID, minimum thickness (MIN TH xxxMM).Date of manufacture sign: date and casting heat number (xx xx xx xx).Manufacturer's sign: code name or registration mark figure (xx xx).Secondary manufacturer sign: code name or registration mark figure (xx xx).One-level manufacturer sign: code name or registration mark figure (xx xx).Car model sign: code name (xxxx).Client's rules number sign: code name permanent identification such as (xxxx).Numerous groups casting is identified at and casts out general requirement on the same circumference and take two kinds of structures: the one, and adopt and on circumference, the typefounding groove is made continuous groove structure (Fig. 3), but should be less than bolt hole aperture smallest circumference scope (the matrix annular groove have reduced end face intensity continuously, can not be located on the principal direction of bolt hole week footpath power transmission) by designing requirement annular groove maximum outside diameter; The 2nd, adopt and on circumference, the typefounding groove to be made interrupted groove structure (Fig. 2), can be by designing requirement annular groove maximum outside diameter greater than bolt hole aperture largest circumference scope, but interrupted matrix annular groove must have enough spacings between facing mutually.In order to finish requirement, the existing method that adopts is directly to cast out in casting spill sand mold bottom surface, and the deficiency of its existence is that the type matrix on the sand mold easily falls in the casting process, is difficult for finding to cause product rejection in the mechanization moulding process; The state that the typefounding font size of portioned product casts out under guarantee requiring can not clearly easily be distinguished, does not satisfy the function of reviewing with right-safeguarding, the serious product rejection that causes.

(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 sand mold that satisfies foundry goods outward appearance sign quality and improve the casting of automobile brake disc sign of the yield rate of sand mold in the forming process.

For achieving the above object, the sand mold of the utility model casting of automobile brake disc sign is to realize like this, its improvement is: the casting sand type matrix is divided into two bodies finishes, one is the sand mo(u)ld (Fig. 4 or Fig. 5) with the prefabricated tape identification of precoated sand, another body is the spill sand mold, finish at moulding machine put sand, compacting, the demoulding, after a series of conventional actions of unpacking, the Ministry of worker of core is put into the sand mo(u)ld of prefabricated tape identification in the spill sand mold under sand mold is waited for, finish the mould assembling operation again, promptly finish the sand mold that needs.

Constitute the brake disc die cavity after the upper and lower sand mold mould assembling, promptly finish the shaping work of a brake disc after the cast.

The said structure that the utility model is taked, by increasing this prefabricated sand mo(u)ld, this sand mo(u)ld adopts precoated sand, the raw material sand improves a specification than moulding sand on granularity order number, moulding Grains number adopts 50-100, type matrix Grains number adopts 70-140, guaranteed the clear intensity height of sand mo(u)ld font like this, and can make font become compact, solved and on contacted of brake disc and wheel rim, cast out required interrupted of sign and the groove (Fig. 4 state) of enough spacings is arranged or make continuous recess structure (Fig. 5 state) between facing mutually in bolt hole aperture smallest circumference scope.The advantage of thereupon bringing is in the mechanization moulding process, to have eliminated because of falling the difficult discovery of word on the sand mold and caused the product waste product; Writing is unintelligible, does not satisfy the function of reviewing with right-safeguarding, the product rejection that causes and the waste that produces.

(4) description of drawings:

Fig. 1 is the front view of the utility model sand mold section;

Fig. 2 Fig. 3 is the stereogram after the utility model sand casting;

Fig. 4 Fig. 5 is the stereogram of the utility model sand mold with the prefabricated tape identification sand mo(u)ld of precoated sand.

(5) specific embodiment: shown in Figure 1, the sand mold of this casting of automobile brake disc sign, be to put prefabricated sand mo(u)ld 5 (Fig. 4 or Fig. 5) and core 6 in the sand mold 8 down, close and go up the needed brake disc die cavity 4 of sand mold 7 back formation, the sprue 1 that described upward sand mold 7 is provided with, ingate 2, venthole 3 is communicated with brake disc die cavity 4, during casting, pouring molten iron is by sprue 1, ingate 2 is filled in the die cavity 4, and casting finishes and opens sand mold 7 and 8 up and down, promptly finishes the brake disc blank (Fig. 2 or Fig. 3) that needs after sand removal.

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 sign, it is characterized in that: putting prefabricated sand mo(u)ld (5) and core (6) in the sand mold (8) down, close and go up sand mold (7) back formation needed brake disc die cavity (4), the sprue (1) that described upward sand mold (7) is provided with, ingate (2), venthole (3) is communicated with brake disc die cavity (4).