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Casting mould structure capable of pulling core firstly and then ejecting

A core-pulling and mold-first technology, applied in the field of core-pulling and then ejecting the mold structure, can solve the problems of increasing product stress, increasing core rod wear, increasing demolding force, etc., reducing production costs, reducing friction, reducing effect of stress

Active Publication Date: 2016-02-03
安徽熠辉新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some products with a larger mass, such as a product with a mass of 500g, have a longer molding time due to the larger mass of the product. When the product is cooled, the shrinkage is relatively large. If the mandrel is tight, the release force between the product and the mandrel will increase, thereby increasing the friction between the mandrel and the product, which will increase the wear of the mandrel during demoulding, reduce the life of the mandrel, and increase The internal stress of the product affects the performance and life of the product. In severe cases, the product may crack during molding, which directly leads to the scrapping of the product

Method used

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  • Casting mould structure capable of pulling core firstly and then ejecting
  • Casting mould structure capable of pulling core firstly and then ejecting
  • Casting mould structure capable of pulling core firstly and then ejecting

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Embodiment Construction

[0022] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Such as figure 1 , 2 As shown in and 3, the mold structure includes a frame 10 and a movable mold 20, a fixed mold 30, a movable mandrel 40, a top plate 50 and a hydraulic cylinder 60 arranged on the frame.

[0024] Described frame 10 comprises the work platform 11 of top, the base plate 12 of below and the connecting rod 13 that is used to connect described work platform 11 and base plate 12, and described work platform 11 is used for supporting fixed mold 30, and described base plate 12 is used for In order to support the hydraulic cylinder 60, the working platform 11 is also connected with a guide support plate 14 through a vertical strut 15, the guide support plate 14 cooperates with the guide post 51 through a guide sleeve, and the guide post 51 is fixedly connected with the top plate 50, so The top plate improves the stability o...

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Abstract

The invention provides a casting mould structure capable of pulling a core firstly and then ejecting. The casting mould structure comprises a rack as well as a movable mould, a fixed mould, a movable core rod, an ejector board and a hydraulic cylinder which are arranged on the rack, wherein the movable mould and the fixed mould are arranged up and down; the movable mould and the fixed mould are in mutual contact and form a mould cavity; when the mould works, molten metal is firstly poured into the mould cavity from a sprue of the movable mould, and then, the ejector board is pulled down by virtue of the hydraulic cylinder to drive the movable core rod to move downwards and separate from a through hole of a product, so that shrinkage stress is released; after a product is molded, the movable mould and the product are ejected sequentially through a top mould rod and an ejector rod; and the casting mould structure is suitable for mould opening of the product with the through hole, so that the product with the through hole is prevented from a cracking phenomenon during mould opening.

Description

technical field [0001] The invention relates to the technical field of casting molds, in particular to a core-pulling and then ejecting mold structure for casting molds. Background technique [0002] When the product developed by the casting mold is opened, if the product contains a through hole, generally the movable mold is directly removed first, and then when the product is ejected with the ejector rod, the through hole is separated from the mandrel, thereby completing Mold opening operation. However, some products with a larger mass, such as a product with a mass of 500g, have a longer molding time due to the larger mass of the product. When the product is cooled, the shrinkage is relatively large. If the mandrel is tight, the release force between the product and the mandrel will increase, thereby increasing the friction between the mandrel and the product, which will increase the wear of the mandrel during demoulding, reduce the life of the mandrel, and increase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/06
Inventor 段聪翀黄佰成许明叶应钧
Owner 安徽熠辉新材料有限公司
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