Subsurface gate processing technology

Abstract

The invention discloses a subsurface gate processing technology. The subsurface gate processing technology comprises the following steps that a, an integrated electrode is manufactured according to the gate shape, wherein an electrode head matched with the gate shape is arranged on the integrated electrode; b, the integrated electrode is installed on a machine head of an electric discharge machine, and a gate axis line of a to-be-processed workpiece coincides with an axis line of the electrode head of the integrated electrode; c, according to the initial installation position of the electrodehead of the integrated electrode, processing starting coordinates are determined by the position of a point on the integrated electrode, when processing of the electrode head of the integrated electrode is finished, the electrode head of the integrated electrode is located in a gate, and processing ending coordinates are determined by the position of the point on the integrated electrode; and d, the starting processing coordinates and the ending processing coordinates are input on the electric discharge machine. According to the subsurface gate processing technology, the electrode precision ishigh, the discharge quality is good, processing is convenient, manual clamping and disassembly are omitted, and the degree of automatic production is improved.

Description

technical field [0001] The invention relates to the technical field of processing technology, in particular to a latent gate processing technology. Background technique [0002] Latent gate, also known as tunnel gate, is evolved from point gate. It not only overcomes the shortcomings of point gate mold complexity, but also maintains the advantages of point gate. The latent gate can be set on the side of the movable mold or on the side of the fixed mold. It can be placed on the inner surface or hidden side of the plastic part, it can also be placed on the ribs and columns of the plastic part, and it can also be placed on the parting surface. It is also a simple and easy way to use the ejector rod of the mold to set the gate. The latent gate is generally in the shape of a cone, and forms a certain angle with the cavity, usually 20°-45°, and the gate size can be selected according to the size of the point gate. [0003] The advantages of latent gates are as follows: (1) The ...

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Problems solved by technology

(2) After the product is formed, it will be automatically broken with the plastic part when it is ejected

Its disadvantages are as follows: (1) Since the latent gate sneaks under the parting surface and enters the cavity along an oblique direction, it is difficult to process

(2) Since the shape of the gate is a cone, it is easy to cut off when ejecting, so the diameter should be relatively small, but when dealing with thin-walled products, it is not suitable because the pressure loss is too large and it is easy to condense.

[0004] At present, the processing of the latent glue inlet is processed by the swing angle of the workpiece or the swing angle of the electrode; in the process, it is necessary to manually adjust the gauge of the part or the electrode, and trim the edge of the workpiece, and then process it on the machine. The main defect is that the process is cumbersome. , there are many human interventions and manual operations are more troublesome, and it is not easy to archive

[0005] A Chinese patent (publication number: CN102151919B) discloses a method of electric discharge machining latent gate, which can process latent gate by electric discharge, but in this method, it is necessary to match the pouring direction of the insert with the spark machine The workbenches are perpendicular to each other. Due to the high requirements on the placement position of the inserts, the placement method is difficult, and the final gate accuracy is difficult to be guaranteed.

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