CN210208554U - Gravity casting mold for wheel alloy hub - Google Patents

Abstract

A wheel alloy hub gravity casting mold comprising: the lower die, the first side die, the upper die and the second side die are closed to form a cavity of a hub casting and form an annular runner, the lower die is arranged above the lower die seat, a sprue spreader is arranged at the center of the lower die, a first blind riser fixed on the upper die is arranged right above the spreader cone, the spreader cone and the first blind riser form an inner cavity, the second side die is provided with a runner with an upper opening, the runner is used for injecting aluminum water, a slag collecting bag is communicated with the lower side surface of the runner through a pouring channel, the slag collecting bag is communicated with an annular pouring channel of the die, the lower end surface of the upper die is provided with a plurality of spokes along the circumferential direction, respectively establish a second blind riser in the both sides of spoke, second blind riser outer end and mould annular are watered and are communicated with each other, and second blind riser inner communicates with each other with the mould inner chamber, the utility model discloses aluminium water flow is big, and the feeding is effectual, reduces the qualification rate of heat festival and improvement wheel hub foundry goods.

Description

Gravity casting mold for wheel alloy hub

Technical Field

The utility model relates to an automobile wheel hub makes technical field, specifically is a wheel alloy wheel hub gravity casting mould.

Background

The aluminum alloy has lower melting point and good casting performance, and the gravity casting part and the low-pressure casting product are widely applied to a plurality of fields of automobiles, motorcycles, motors, communication, hardware tools and the like, and particularly, the application of products with large wall thickness is more.

The casting method of the aluminum alloy hub mainly comprises gravity casting and low-pressure casting, wherein the gravity casting refers to a process of injecting molten metal into a casting mold under the action of earth gravity, and also comprises the step of weighing and casting, aluminum water is injected into the gravity-cast hub from a side mold and then flows to the center of a cavity through an annular flow passage, and the aluminum water can pass through a spoke area of the hub.

The inventor finds in the process of creating this embodiment that if the spokes of the hub are thin, the difficulty with this construction for the casting process is that the spokes tend to solidify prematurely, leaving other parts without feeding channels, creating casting defects; the thin spokes have small diameter, the flow of molten aluminum is affected, and if the thickness of the whole casting is not uniform, the thin portions of the material are cooled first, which results in thermal joints at two sides of the thin spokes, and the thermal joints exist, so that deformation or cracking is generated in the areas during cooling, and the yield is reduced.

Disclosure of Invention

The utility model aims at providing a wheel alloy wheel hub gravity casting mould just in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose: a wheel alloy hub gravity casting mold comprising: the lower mould, first side mould, go up mould and second side mould, the lower mould first side mould go up the mould with the closed die cavity that forms the wheel hub foundry goods of second side mould forms the annular and waters.

The lower die is arranged above the lower die base, a sprue spreader is arranged at the center of the lower die, a first blind riser fixed on the upper die is arranged right above the sprue spreader, and the sprue spreader and the first blind riser form an inner cavity.

The second side mould is equipped with the chute of upper shed, the chute is used for pouring into the aluminium water, the collection cinder ladle through water with the downside of chute is linked together, the collection cinder ladle communicates with each other with the annular of mould is watered.

The lower end face of the upper die is provided with a plurality of spokes along the circumferential direction, two sides of each spoke are respectively provided with a second blind riser, the outer end of each second blind riser is communicated with the annular pouring channel of the die, and the inner end of each second blind riser is communicated with the inner cavity of the die.

Preferably, in order to facilitate demolding, the side wall of the second blind riser is provided with a draft angle of 2-5 degrees.

Advantageous effects

The utility model has the advantages that: the utility model discloses aluminium water flow is big, and the feeding is effectual, reduces the heat festival and improves the qualification rate of wheel hub foundry goods, reduces advantages such as manufacturing cost of enterprise.

Drawings

Fig. 1 is a schematic view of the utility model with the mold disassembled;

FIG. 2 is a schematic structural view of an upper mold of the present invention;

fig. 3 is a schematic view of the mold of the present invention in a closed state;

in the figure: 1-a heat preservation furnace, 11-a charging opening, 12-a fixed rod and 13-a first filter screen;

2-lower die, 21-sprue bush;

3-a spreader cone;

4-a first side mold;

5-first blind riser;

6-upper die, 61-second blind riser, 62-spoke;

7-slag collection bag;

8-a launder;

9-second side die.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. It should be noted that, in the following description, the words "front", "back", "left", "right", "upper" and "lower" are used, the words "left", "right", "upper" and "lower" refer to directions in the drawings, the words "front" and "back" refer to directions toward or away from the geometric center of a specific component, respectively, and in combination with the drawings in the embodiments of the present invention, the technical solution in the embodiments of the present invention is clearly and completely described, it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments.

Example 1

Referring to fig. 1 to 3, a gravity casting mold for wheel alloy hubs includes: the lower die 2, the first side die 4, the upper die 6 and the second side die 9 are closed to form a cavity of a hub casting and form an annular runner, the lower die 2 is arranged above the lower die base 1, the lower die center is provided with a sprue spreader 3, a first blind riser 5 fixed on the upper die 6 is arranged right above the sprue spreader 3, and the sprue spreader 3 and the first blind riser 5 form an inner cavity.

The second side mould 9 is provided with a runner 8 with an upper opening, the runner 8 is used for injecting molten aluminum, the slag collecting bag 7 is communicated with the lower side surface of the runner 8 through a pouring channel, the slag collecting bag 7 is communicated with the annular pouring channel of the mould, the molten aluminum is injected from the upper opening of the runner 8, flows through the short pouring channel and then enters the slag collecting bag 7, and finally flows into the mould cavity through the annular pouring channel.

The lower end face of the upper die 6 is provided with a plurality of spokes 62 along the circumferential direction, two sides of each spoke 62 are respectively provided with a second blind riser 61, the outer end of each second blind riser 61 is communicated with the annular pouring gate of the die, the inner end of each second blind riser 61 is communicated with the inner cavity of the die, the second blind riser 61 increases the aluminum water throughput, the spokes are prevented from being solidified prematurely, other parts are prevented from losing feeding channels, the qualification rate is improved, in order to facilitate die drawing, the side wall of each second blind riser 61 is provided with a certain die drawing inclination, and the die drawing inclination is 2-5 degrees.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (2)

1. A wheel alloy wheel hub gravity casting mould which characterized in that includes: the wheel hub casting die comprises a lower die (2), a first side die (4), an upper die (6) and a second side die (9), wherein the lower die (2), the first side die (4), the upper die (6) and the second side die (9) are closed to form a cavity of a wheel hub casting and form an annular pouring channel;

the lower die (2) is arranged above the lower die base (1), a shunting cone (3) is arranged at the center of the lower die, a first blind riser (5) fixed on the upper die (6) is arranged right above the shunting cone (3), and the shunting cone (3) and the first blind riser (5) form an inner cavity;

the second side die (9) is provided with a runner (8) with an upper opening, the runner (8) is used for injecting molten aluminum, the slag collecting bag (7) is communicated with the lower side surface of the runner (8) through a pouring channel, and the slag collecting bag (7) is communicated with an annular pouring channel of the die;

the lower end face of the upper die (6) is provided with a plurality of spokes (62) along the circumferential direction, two sides of each spoke (62) are respectively provided with a second blind riser (61), the outer end of each second blind riser (61) is communicated with the annular pouring gate of the die, and the inner end of each second blind riser (61) is communicated with the inner cavity of the die.

2. A wheel alloy hub gravity casting mold as in claim 1, wherein: and the side wall of the second blind riser (61) is provided with a 2-5-degree draft angle.

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