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Die casting mold and improved vent structure used therein

A technology for die-casting molds and discharge channels, which is applied in the field of improvement of die-casting molds, can solve problems such as high additional costs, and achieve the effect of reducing maintenance costs

Inactive Publication Date: 2007-05-02
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This substitution of a pair of ejectors results in high additional costs

Method used

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  • Die casting mold and improved vent structure used therein
  • Die casting mold and improved vent structure used therein
  • Die casting mold and improved vent structure used therein

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Embodiment Construction

[0024] Reference is first made to FIG. 1 which shows a cross-section of a die casting die 10 embodying the invention. The die-casting mold 10 includes a fixed mold part 11 and a movable mold part 12 movable toward and away from the fixed mold part 11 , and a cavity 13 is defined between the fixed mold part and the movable mold part when the die-casting mold 10 is closed. The movable mold part 12 is installed on the mold base 20 of the die-casting machine. While the die-casting mold 10 is held closed, a die-casting part or casting 39 is formed by driving a die punch 14 that reciprocates within a shot cylinder 15 to hydraulically force metal under pressure into the cavity 13 .

[0025] The stationary part 11 has a discharge channel 16 formed in its mating face 26 (FIG. 2). When the mold 10 is closed, the discharge channel 16 extends to communicate with the cavity 13 . In this way, when molten metal is injected into the cavity 13 , the remaining air and / or gas in the cavity 13 ...

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PUM

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Abstract

A die casting mold includes a resistance member (17) disposed in a vent passage (16) to reduce a flow velocity of molten metal as the molten metal advances along the vent passage. The resistant member comprises a plurality of discrete protrusions (24) arranged in staggered relation to one another in both a longitudinal direction and a transverse direction of the vent passage so as to define therebetween a labyrinthine part (34) extending between an inlet side and an outlet side of the vent passage.

Description

technical field [0001] The present invention relates to an improvement to a die casting mold having a chill vent structure which allows air and / or gas to escape from the cavity while preventing The molten metal splashes to the outside of the die-casting mold while inside the cavity. Background of the invention [0002] A die-casting mold having a cooling discharge structure has been disclosed, for example, in Japanese Patent Laid-Open (JP-A) No. 11-151564, wherein the cooling discharge structure allows the remaining Metal is hydraulically injected into the cavity under pressure without splashing unsolidified molten metal. The cooling discharge structure of the disclosed die casting mold will be described below with reference to FIG. 7 . [0003] As shown in FIG. 7, the cooling drain structure includes a cooling drain block 100 consisting of a pair of drain halves or members 102 and 104 secured to a mating pair of die-cast molds 101 and 103, respectively. The vents 102, 10...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/14
CPCB22D17/145
Inventor 原田裕喜西潟幸夫八木国雄
Owner HONDA MOTOR CO LTD