CN202291349U - Die-casting mold with plurality of projected parts on sprue - Google Patents

Abstract

A die-casting mold with a plurality of projected parts on a sprue comprises two crossed thin-wall mold parts for forming mutually crossed thin walls, and is characterized in that: a main body of the sprue of the die-casting mold is located on one of the crossed thin-wall mold parts, moreover, the sprue is provided with the projected parts which are extended from the main body to the other crossed thin-wall mold part, and both the main body and the projected parts are rectangular. The die-casting mold has the beneficial effects that: since the projected parts which are extended from one of the crossed thin-wall mold parts to the other crossed thin-wall mold part are formed on the sprue, the area of the sprue is enlarged, so that the time of sprue closing caused by the solidification of molten metal is correspondingly prolonged, consequently, the molten metal-supplying state can be kept for a longer time, the casting pressure in a cavity can be kept longer by means of the crossed thin-wall mold parts, and thereby the occurrence of solidification contraction is effectively prevented.

Description

A kind of cast gate has the die casting of a plurality of protuberances

Technical field

The utility model relates to a kind of casting device, and especially a kind of cast gate has the die casting of a plurality of protuberances.

Background technology

In the technical field of compression casting, motlten metal is pressed into die cavity through running channel, the gate part of mould, and motlten metal solidifies the back and forms foundry goods.And when die casting has the foundry goods of intersection thin-walled; Often with the design of the cast gate of mould on one of them section of two intersection thin-walleds; And being shaped as of cast gate along the rectangular shape of this thin-wall long and thin and vertical with another thin-walled; As shown in Figure 1, the thin-walled mould part of two intersections of casting die 5 is respectively 6 and 7, and rectangle cast gate 8 is arranged on the thin-walled mould part 6.

Yet during owing to die casting, the solidify position final at motlten metal tends to owing to the solidification shrinkage of metal in the inside of foundry goods formation defective.For fear of generation of defects, people often are arranged to homogeneous thickness with the thin-walled of foundry goods goods as far as possible, and if can't thickness be provided with evenly, then can only implement means such as pressurized.Yet the means of this pressurized have produced serious restriction for everyways such as casting mold, casting pressure and casting times, thereby casting is had a negative impact, and can not well prevent the defective that solidification shrinkage produces simultaneously.

Summary of the invention

The purpose of the utility model promptly be to provide can prevent the solidification shrinkage defective, be used to have and intersect the die casting of foundry goods of thin-walled.

The technical scheme that the utility model adopted is following: a kind of cast gate has the die casting of a plurality of protuberances; Comprise two intersection thin-walled mould parts that are used to form mutual intersection thin-walled; It is characterized in that: the main body of the cast gate of said die casting is positioned on one of them intersection thin-walled mould part, and said cast gate has a plurality of protuberances that extend to another intersection thin-walled mould part from said main body; Said main body and said a plurality of protuberance are rectangular shape.

The beneficial effect of the utility model is; Because a plurality of protuberances that cast gate extends to form to another intersection thin-walled mould part from an intersection thin-walled mould part; Make the cast gate area expand, thereby owing to motlten metal solidifies the corresponding prolongation of time that causes cast gate closed, so can keep the supply state of motlten metal for more time; Also just can make the inner casting pressure of die cavity be able to continue to prolong, thereby effectively prevent the generation of solidification shrinkage through the intersection thinner wall section.

Description of drawings

Fig. 1 is the structural representation of die casting in the prior art;

Fig. 2 is the structural representation that the cast gate of the utility model has the die casting of a plurality of protuberances.

The specific embodiment

Below in conjunction with accompanying drawing 2; The cast gate of describing the utility model in detail has the die casting 1 of a plurality of protuberances; Comprise two intersection thin-walled mould parts 2,3 that are used to form mutual intersection thin-walled; It is characterized in that: the main body 4A of the cast gate 4 of said die casting 1 is positioned on one of them intersection thin-walled mould part 2, and said cast gate 4 has two protuberance 4B, the 4C that extends to another intersection thin-walled mould part 3 from said main body 4A; Said main body 4A and said two protuberance 4B, 4C are rectangular shape.

Claims (1)

1. a cast gate has the die casting of a plurality of protuberances; Comprise two intersection thin-walled mould parts that are used to form mutual intersection thin-walled; It is characterized in that: the main body of the cast gate of said die casting is positioned on one of them intersection thin-walled mould part, and said cast gate has a plurality of protuberances that extend to another intersection thin-walled mould part from said main body; Said main body and said a plurality of protuberance are rectangular shape.

Images