Vacuum pumping system for die cavities of die-casting dies

A vacuum system and die-casting mold technology, applied in the field of mechanical equipment, can solve the problems of molten metal easily entering the vacuum pipeline, incomplete vacuuming, complex structure, etc., and achieve the effect of simple structure, low cost, and low difficulty in vacuuming

Active Publication Date: 2014-12-17
诸暨市海禾金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above solution has improved some problems in the existing technology to a certain extent, such as the problem of incomplete vacuuming, but there are still some p...

Method used

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  • Vacuum pumping system for die cavities of die-casting dies
  • Vacuum pumping system for die cavities of die-casting dies
  • Vacuum pumping system for die cavities of die-casting dies

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Embodiment Construction

[0021] like Figure 1-3 As shown, this die-casting mold cavity vacuuming system includes a plurality of die-casting molds 1 with mold cavities 11 . There is a Y-shaped vacuuming channel 2 with one inner port 21 and two outer ports 22 respectively, the inner port 21 is connected with the mold cavity 11, and one outer port 22 of each die-casting mold 1 is respectively connected with a pipe 3, and the other is An external port 22 is respectively connected to a vacuum cylinder 4, each branch pipe 3 is connected in parallel with the main pipe 5 and communicated with one end of the main pipe 5, the other end of the main pipe 5 is communicated with the vacuum tank 51, and the vacuum tank 51 is connected with a vacuum pump. The vacuum device 52, the vacuum pumping device 52 is preferably a vacuum pump, and each vacuum pumping cylinder 4 is slidably provided with a piston body 41 that is mutually sealed with the circumferential inner wall of the vacuum pumping cylinder 4, and the pisto...

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Abstract

The invention relates to a vacuum pumping system for die cavities of die-casting dies. The vacuum pumping system solves the technical problem that the vacuum pumping cost of an existing die cavity is high. The vacuum pumping system comprises a plurality of die-casting dies, wherein a feeding passage, a Y-shaped vacuum pumping passage, a branch pipe, a vacuum cylinder barrel, a main pipe, a vacuum tank and a vacuum pumping device are arranged on each die-casting die, a piston body is arranged in each vacuum pumping cylinder barrel in a sliding mode, each piston rod is connected with a driving mechanism, a vacuum stop valve is arranged between each vacuum pumping passage and the corresponding feeding passage, a main pipe electronic control valve is connected onto each main pipe, a branch pipe electronic control valve and a first one-way valve are respectively connected onto each branch pipe, and a second one-way valve is arranged between each die cavity and the corresponding vacuum pumping cylinder barrel. The vacuum pumping system for the die cavities of the die-casting dies has the advantages that the cost is low, one vacuum pump can realize vacuum pumping of a plurality of die cavities, the vacuum is pumped in a double-choice mode, the vacuum pumping difficulty is low, and molten metal is unlikely to enter vacuum pipelines.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to a die-casting mold cavity vacuuming system. Background technique [0002] Die casting is a forming process in which liquid metal fills the mold cavity at a very high speed under the action of high pressure, and cools and solidifies under the action of pressure to obtain castings. Since the molten metal fills the cavity in a high-speed spray state, most of the gas in the cavity cannot be discharged in time, and is inevitably involved in the molten metal and remains in the die-casting part in the form of pores, resulting in the formation of a relatively large amount of gas in the die-casting part. Serious porosity defects, there are certain problems in the internal quality of the product, in order to improve the internal quality of the product in the die-casting forming technology, avoid most of the gas in the cavity being involved in the molten metal durin...

Claims

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Application Information

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IPC IPC(8): B22D17/20B22D17/14
Inventor 杨乃根杨勇戚欢兴
Owner 诸暨市海禾金属制品有限公司
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