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Vacuum exhaust system for die casting

A technology of vacuum exhaust and vacuum tank, which is applied in the field of vacuum systems, can solve the problems of low pipeline exhaust rate, low efficiency, and long response time of cavity vacuum degree, and achieve the goal of improving exhaust efficiency and reducing vacuum degree response time Effect

Inactive Publication Date: 2011-09-14
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an improved vacuum exhaust system for die-casting to solve the low efficiency problems of the existing vacuum exhaust system, such as the low exhaust rate of the vacuum system pipeline and the long response time of the cavity vacuum degree, and finally achieve obvious Improving the Quality of Vacuum Die Castings

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Embodiment Construction

[0011] The specific structure, working principle and working process of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] A vacuum exhaust system for die-casting provided by the present invention includes a module one 12 and a module two 13. The module one is composed of an impurity separator 3 and a parallel assembly 11, and each group of the parallel assembly consists of a solenoid valve 5 and a The electromagnetic valve is connected in series with a filter 4; the second module includes a vacuum machine 10, a vacuum tank and an accessory 7, and the vacuum machine 10 is assembled from a check valve 8, a vacuum pump and an accessory 9; impurities The separator 3 communicates with the outlet of the mold cavity 1 through the short hose 2, and the vacuum tank and the accessories 7 communicate with the parallel assembly 11 through the long hose 6, and at least two groups of parallel assemblies are connected in parallel.

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Abstract

The invention relates to a vacuum exhaust system for die casting. The vacuum exhaust system is used as peripheral equipment of a die casting machine in vacuum die casting process, and is characterized in that an electromagnetic valve controlling the on-off switching of a vacuum pipeline and a filter connected in series with the electromagnetic valve adopt the mode of multiple parallel connection,so that exhaust capacity is increased; and element groups connected in parallel are arranged near a static template of the die casting machine so as to shorten the length of a pipe between the element groups and a die and increase the reaction of a casting die cavity to vacuum exhaust. The vacuum exhaust system has the advantage of strong exhaust capacity; therefore, exhaust time is shortened after the system is adopted; and the system can obtain a vacuum degree required by vacuum die casting and finally improves the quality of vacuum die casts.

Description

technical field [0001] The invention relates to a vacuum system, which is used in a vacuum die-casting process and is used as peripheral equipment of a die-casting machine realized by the vacuum die-casting process, and belongs to the technical field of mechanical casting. Background technique [0002] Before the mold of the die-casting machine is closed and filled with molten metal, the cavity of the mold is often vacuumed to reduce porosity defects and improve the quality of the casting. However, in the existing vacuum die casting applications, there is generally a shortcoming of insufficient air extraction capacity, that is, it is difficult to achieve a high degree of vacuum within the time required by the process. On the one hand, the existing die-casting vacuum system generally adopts the method of connecting the constant pressure vacuum box and the die-casting mold with a solenoid valve to control the vacuuming action of the mold, and a series of components such as sol...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D17/20
Inventor 熊守美胡泊王柏树
Owner TSINGHUA UNIV
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