Active differential pressure balancing device for high-precision die drawing assembly

Abstract

The invention discloses an active differential pressure balancing device for a high-precision die drawing assembly. The active differential pressure balancing device comprises a bidirectional pressurization rapid reversing mechanism, a self-pre-tightening demolding pressurization mechanism, a pressurization casting mechanism, a gas extrusion mechanism and a sliding extrusion mechanism. The invention belongs to the technical field of die drawing assistance, and particularly relates to an active differential pressure balancing device for a high-precision die drawing assembly. Through the pressurization casting mechanism and the self-pre-tightening demolding pressurization mechanism, the casting pressure can be increased through pressurization of the pressurization casting mechanism, so that the structure is tighter, the quality is higher, a product can be ejected out of a mold through pressurization of the self-pre-tightening demolding pressurization mechanism, negative pressure is avoided, and the production efficiency is improved. Through the bidirectional pressurization rapid reversing mechanism, the pressurization modes of the self-pretightening demolding pressurization mechanism and the pressurization casting mechanism can be switched, and the steps of mold closing and demolding are controlled.

Description

technical field [0001] The invention belongs to the technical field of drafting assistance, and specifically refers to an active differential pressure balancing device for high-precision drafting components. Background technique [0002] When using a mold for casting, it is generally necessary to design a draft angle. The reason for designing the draft angle is mainly to reduce the difficulty of demoulding, which is mainly reflected in the following two points: [0003] A: Prevent frictional resistance on the surface of the product and the mold during demoulding; [0004] B: Prevent negative pressure in the product and the cavity at the bottom of the mold during demoulding. [0005] However, the design of the draft angle will also bring a lot of disadvantages. First of all, if the product itself has no slope, the cast blank must undergo secondary machining with a large amount of cutting to become the shape marked on the drawing; this not only causes The waste of processing...

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Problems solved by technology

[0007] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a method that can solve the problem of large resistance during the drafting process without designing the draft angle, and has the functions of pressurized casting and pressurized demoulding. A high-precision active pressure balance device for drafting components; by improving the precision of the inner wall, it can not only effectively reduce the frictional resistance of the draft, but also reduce or omit the finishing step, which is very effective when combined with pressurized casting. Helps improve the surface quality of molded products

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