CN1555942A

CN1555942A - Mould used for fast production of automobile brake drum casting sand mould

Info

Publication number: CN1555942A
Application number: CNA2004100216036A
Authority: CN
Inventors: 李钟毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-02
Filing date: 2004-01-02
Publication date: 2004-12-22
Anticipated expiration: 2024-01-02
Also published as: CN100333855C

Abstract

A mould for quickly preparing the sand mould used to cast the braking drum of car features that its outer mould is composed of a core-box bottom and a peripheral wall which may be composed of symmetrical two halves or integrated with core-box bottom. Its advantages are high air permeability and high quality of castings.

Description

Produce automobile brake drum casting sand mo(u)ld mould fast

Technical field: the present invention relates to a kind of casting core mould, be mainly used in the making in automobile brake drum internal mold loam core, belong to the casting mould field.

Background technology: at first need in the foundry technology process to make husky mould according to part shape, make the die cavity consistent with the part blank at Sha Mozhong, pouring molten iron obtains the part blank then.Some part inside is hollow mechanism, therefore need be in husky model cavity certain position join and put the loam core, inaccurate if put the position, loam core, then can cause foundry goods defective.The manufacture craft of the husky mould of traditional handicraft, particularly automobile brake drum adopts to be made by hand, and control position, loam core difficulty, casting yield is low, foundry goods allowance is big, and labour intensity is big, work efficiency is low.Chinese patent ZL01214020.1 patent " efficiently, environmental protection, energy-saving mold and pattern for casting tool " has proposed a kind of this type of and has cast the making mould of husky mould, be specially adapted to make automobile brake drum and cast husky mould, but this type of loam core that casts husky mould still mainly makes of conventional method, to workman's technical merit require high, fill out that husky pickup inconvenience, efficient are low, the loam core quality is difficult for ensureing, and the venting quality difference in loam core and easily cause bleb and folder is husky, also cause core shift down during core easily.

Summary of the invention: be to solve the problems referred to above that mo(u)ld core, particularly automobile brake drum mo(u)ld core exist in making, the invention provides a kind of quality be easy to control, get that core is convenient, make efficiency is high, venting quality good, down can core shift during core, workman's technical merit is required low efficient, environmental protection, energy-saving casting core mould.

To achieve these goals, the invention provides following technical scheme: produce automobile brake drum casting sand mo(u)ld mould fast, it is characterized in that mould is made up of core box mould, arbor, the combination of lumens constituent part blank loam core shape of core box mould, there is the positioning through hole that inserts the location for arbor at core box mold bottom center, and the arbor lower end can be useful on the arbor head of location; The core box mould constitutes at vertical symmetrical dimidiation, and core box mould appearance is useful on the card spoke that fixedly ear that they are connected or core box mould be symmetrically distributed with two halves at the bottom of by core box and constitutes jointly, and appearance is useful on the fixedly ear that they are connected; Perhaps be integral structure at the bottom of card spoke and the core box in the core box mould, its card spoke inwall has pattern draft; Perhaps the core box mould constitutes with the entire card spoke on top at the bottom of by the core box of bottom, and its card spoke inwall has pattern draft; Locate by concavo-convex fit structure or alignment pin, locating hole, locating slot socket the upper end at the bottom of card spoke lower end and the core box, and intracavity bottom has corresponding groove at the bottom of the core box, but groove draw-in groove or cotter way; Arbor can be hollow netted, vertical bar shape, irregular cross-like, perhaps tubulose, and its outer tubular wall is held sand with lattice framing or projection, and there are inner flange or outward flange handgrips in the arbor upper end.

Card spoke 2 also can divide body structure by vertical symmetrical dimidiation, and its binding site is that location structure, the appearance of concavo-convex cooperation is useful on the fixedly ear 5 that they are fixing.

1 also can be integral structure at the bottom of card spoke 2 and the core box, and arbor 3 can be hollow or solid construction.Making such as entire die and arbor available metal material, fiberglass, organic synthesis material.

The present invention is owing to adopt the card spoke and the core box bottom die structure of arbor and the easy accessibility have location structure and pickup handle, thus have that the coremaking precision is easy to guarantee, produce core processing ease, the technical merit that does not need to ask the workman, make efficiency height, advantage that can core shift when core is played because of positioning head is arranged in the loam core that obtains; Simultaneously, the loam core degree of packing that obtains is even, steam discharge is even, outward appearance is clean and tidy, makes defectives such as bright and clean, the no burning into sand of cast(ing) surface after the moulding, pore, has significantly reduced allowance, has saved molten iron.

Description of drawings:

Further specify essence of the present invention below in conjunction with accompanying drawing.

Fig. 1 is the cross-sectional schematic of invention mould, and wherein core print (5) is the convex-concave fit structure.

Fig. 2 schematic top plan view of the present invention, wherein the core box mould is the symmetrical two halves of dividing equally.

Fig. 3 is the cross-sectional schematic of invention mould, and wherein core print (5) is directly parallel with core box outer wall wall.

Fig. 4 is the cross-sectional schematic of invention mould, and wherein core print (5) is parallel with core box inwall wall.

The specific embodiment: embodiment 1:(makes automobile brake drum internal mold loam core): as shown in Figure 1, 2, automobile brake drum internal mold loam core mould is made up of core box mould, hollow arbor, the core box mould selects for use card spoke (2) three positions that are symmetrically distributed by (1) at the bottom of the core box and left and right sides two halves to constitute jointly, their combination of lumens forms automobile brake drum internal mold loam core shape, (1) upper end is by concavo-convex fit structure socket at the bottom of card spoke (2) lower end and the core box, the location between at the bottom of concavo-convex fit structure assurance spoke lower end and the core box; (1) intracavity bottom has a groove at the bottom of the core box, with termination, location, shape loam core, locatees when being used to put into die cavity; Bottom centre has one to insert the positioning through hole (6) of location for core print (6) at the bottom of the box, and there are inner flange or outward flange handgrips in arbor head (5), upper end that arbor (3) termination is useful on the location, by this handle arbor (3) of can choosing easily.Core box mould and arbor (3) are selected for use by aluminum alloy materials and are made.

Embodiment 2: fixedlyed connected up and down with card spoke (2) (1) at the bottom of the core box mould was selected core box for use, cuts open in the longitudinal direction symmetry of core box mould, forms left side core box mould and right side core box mould two partly, bad internal mold shape of the combination of lumens shape of core box mould casting hair; In core box dies cavity bottom one groove is arranged, constitute location, loam core core print, locate when being used to put into the loam core; Core box mold bottom center has one to insert the positioning through hole (6) of location for core print (6), and there are inner flange or outward flange handle in core print (5), upper end that arbor (3) termination is useful on the location, by this handle arbor (3) of can choosing easily.The core box mould selects for use iron material to make, and arbor selects for use the wire netting material to make.

Embodiment 3: mould is made up of core box mould, hollow arbor, wherein the card spoke (2) in the core box mould can be fixed to one structure with (1) at the bottom of the core box, core box mould outer wall need not fixedly ear (4), but the core box mould inner wall should have the pattern draft and the handle of 1-5 degree, the internal cavities of core box mould is a mold cavity, there is a positioning through hole for core print (6) insertion location at core box mold bottom center, there are inner flange or outward flange handle in core print (5), arbor (3) upper end that arbor (3) termination is useful on the location, and people can take out arbor (3) easily by this handle.Core box mould and arbor (3) option is made of metal material.

Embodiment 4: mould is made up of core box mould, hollow arbor, and (1) constitutes with the entire card spoke (2) on top at the bottom of the core box of core box mould by the bottom, and its inwall has pattern draft.The hair bad shape of the inner chamber of core box mould for making, there is a positioning through hole (6) for core print (6) insertion location in (1) bottom centre at the bottom of the core box, there are inner flange or outward flange handle in core print (6), upper end that arbor (3) termination is useful on the location, can get core easily by this handle.The upper end is by concavo-convex fit structure socket at the bottom of card spoke lower end and the core box, the location between at the bottom of concavo-convex fit structure assurance spoke lower end and the core box; Intracavity bottom has a groove or alignment pin, locating hole, locating slot socket at the bottom of the core box, with termination, location, loam core, locatees when being used to put into die cavity.The core box mould selects for use timber to make, and arbor is made by metal material.

Claims

1, produces automobile brake drum casting sand mo(u)ld mould fast, it is characterized in that mould is made up of core box mould, arbor, the combination of lumens constituent part blank loam core shape of core box mould, there is the positioning through hole (6) that inserts the location for arbor (3) at core box mold bottom center, and arbor (3) lower end can be useful on the arbor head (5) of location.

2, quick production automobile brake drum casting sand mo(u)ld mould according to claim 1 is characterized in that the core box mould constitutes at vertical symmetrical dimidiation, and core box mould appearance is useful on the fixedly ear (4) that they are connected; Perhaps the card spoke (2) that is symmetrically distributed of (1) and two halves is common at the bottom of by core box constitutes for the core box mould, and appearance is useful on the fixedly ear (4) that they are connected; Perhaps block spoke (2) in the core box mould and be integral structure with (1) at the bottom of the core box, its card spoke (2) inwall has pattern draft; Perhaps the entire card spoke (2) on (1) and top constitutes at the bottom of the core box of core box mould by the bottom, and its card spoke (2) inwall has pattern draft.

3, quick production automobile brake drum casting sand mo(u)ld mould according to claim 1 and 2, it is characterized in that at the bottom of card spoke (2) lower end and the core box that (1) upper end locatees by concavo-convex fit structure or alignment pin, locating hole, locating slot socket, (1) intracavity bottom has corresponding groove at the bottom of the core box, but groove draw-in groove or cotter way.

4, quick production automobile brake drum casting sand mo(u)ld mould according to claim 1 and 2, it is characterized in that arbor (3) can be hollow netted, vertical bar shape, irregular cross-like, perhaps tubulose, its outer tubular wall is held sand with lattice framing or projection, and inner flange or outward flange handgrips are arranged on the arbor (3).

5, quick production automobile brake drum casting sand mo(u)ld mould according to claim 3, it is characterized in that arbor (3) can be hollow netted, vertical bar shape, irregular cross-like, perhaps tubulose, its outer tubular wall is held sand with lattice framing or projection, and inner flange or outward flange handgrips are arranged on the arbor (3).