CN203459664U - Aluminium alloy wheel low pressure casting split-type top die - Google Patents

Abstract

The utility model relates to an aluminium alloy wheel low pressure casting split-type top die, and belongs to the field of aluminium alloy casting dies. The top die is formed by a die core (1) and a die body (2). A parting surface is designed as a plane and corresponds to a flange inclined plane of a wheel; a phi 20 gas hole (9), a phi 20 push-out hole (10), a phi 12 wind hole (5) and a die core cooperation end face (7) are arranged in/on the die core (1); a phi 12 wind hole (6) and a cooperation end face (8) of the die body are arranged in/on the die body (2); and the inner diameter of the cooperation end face (8) of the die body is 3 mm bigger than the that of the die core end face (7). The beneficial effects of the top die are that by changing die cores of different structures, different products of wheels which are different in offset distance and flange diameter but same in appearance and form can be achieved, time for machining work is shortened, use ratio of metal is increased, and production cost is reduced.

Description

The split type backform of a kind of aluminum-alloy wheel low pressure casting

Technical field

The utility model relates to the split type backform of a kind of aluminum-alloy wheel low pressure casting, belongs to low-pressure casting die of aluminium alloy wheel field.

Background technology

Existing low-pressure casting die of aluminium alloy wheel is all that a mould is produced a blank, product if there is a plurality of offset distances of blank and different flange diameter, has two schemes at present, and scheme one is to select the product of offset distance minimum to carry out Mold Making, cast a blank, with a blank, obtain the product of a plurality of different offset distances by mach mode, this kind of scheme, while producing the product of large offset distance, scraps during machining amount is large, long processing time, cutter is easy to wearing and tearing, and using rate of metal is low; Scheme two is to classify according to offset distance phase extent, then according to classification results, makes the mould of different offset distances, finally by machine-tooled method, obtains final product.This kind of scheme, has wasted mold materials, has increased die manufacturing cost.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of low pressure casting split type backform, improves using rate of metal and the machined efficiency of the different offset distance products of a moulding.The split type backform of a kind of aluminum-alloy wheel low pressure casting specifically.

The technical solution of the utility model: the split type backform of a kind of aluminum-alloy wheel low pressure casting, is characterized in that: be slit into core rod and die body two parts in the punishment of wheel flange incline position.Core rod is provided with φ 20 steam vents, φ 20 jogger holes, φ 12 wind holes and core rod counterface.Wherein, φ 20 steam vents and venting plug; φ 20 ejects hole and top stem casing is little matched in clearance.Die body is provided with die body counterface and φ 12 wind holes, and wherein, the counterface internal diameter of die body is greater than core rod counterface internal diameter 3mm, and the 12 wind holes of the φ on die body communicate with the φ 12 wind holes of core rod, and object is cooling thermal center, improves the mechanical performance of foundry goods.Core rod and die body adopt seam and pin location, and bolt is formed by connecting, the blank of touching common formation wheel with bed die and the limit of low pressure casting, then form final product by machined and spraying coating process.

The utility model has the advantage of: the design of ingenious backform split-type structural can be according to different offset distances, different flange diameter but the wheel of same appearance and modeling are realized by changing the core rod of different structure.Such structure, has reduced mach scrap rate, has shortened machined man-hour, and has improved the utilization rate of metal; Core rod and die body adopt facet compacting to coordinate, and have guaranteed parting place non-trimming; Core rod is provided with steam vent, and wind hole and eject hole, when meeting and ejecting foundry goods, can be discharged the gas in die cavity smoothly, can also carry out cooling to the thermal center at place, wheel flange inclined-plane.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation.

Fig. 2 is mold insert structure schematic diagram.

Fig. 3 is the structural representation of die body.

In accompanying drawing: 1, core rod, 2, die body, 3, venting plug, 4, top stem casing, 5, φ 12 wind holes (core rod), 6, φ 12 wind holes (die body), 7, core rod counterface, 8, die body counterface, 9, φ 20 steam vents, 10, φ 20 ejects hole.

Concrete embodiment

Below in conjunction with accompanying drawing and example, the utility model is further described.

As shown in Figure 1, the split type backform of a kind of aluminum-alloy wheel low pressure casting, is a part for low-pressure casting die of aluminium alloy wheel, matches form the blank of aluminum-alloy wheel with bed die and Bian Mo.By machined and spraying coating process, form final product again.Core rod in Fig. 1 (1) carries out parting with die body (2) at place, wheel flange inclined-plane, and die joint adopts facet compacting to coordinate, and die joint is of a size of 4mm-7mm.Core rod (1) and die body (2) adopt seam and pin location, and screw removably connects.

As shown in Figure 2, in core rod (1), be provided with φ 20 steam vents (9), φ 20 ejects hole (10), φ 12 wind holes (5) and counterface (7), described φ 20 steam vents (9) and the little matched in clearance of venting plug (3), object is that the gas in die cavity is discharged to die cavity smoothly.Described φ 20 ejects hole (10) and the little matched in clearance of top stem casing (4), is convenient to the foundry goods demoulding smoothly.Described counterface is comprised of R2 fillet and plane.The wind hole (5) of described φ 12, arrange according to the practical structures of wheel, object is the thermal center of cooling foundry goods.

As shown in Figure 3, be provided with the wind hole (6) of counterface (8) and φ 12 in die body (2), described die body counterface (8) internal diameter is greater than core rod counterface (7) internal diameter 3mm.Described φ 12 wind holes (6) will communicate with the φ 12 wind holes (5) of core rod, carry out the thermal center of cooling foundry goods.

Claims (1)

1. the split type backform of aluminum-alloy wheel low pressure casting, is characterized in that: described split type backform is comprised of core rod (1) and die body (2) two parts, and parting Surface Design is the place, flange inclined-plane of plane and corresponding wheel.

Images