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The basic structure of the plastic mold 2010-10-15
The basic structure of the plastic mold By the overall functional structure can be divided into: molding system, injection system, exhaust system, cooling system, ejection system, etc. One. Gating system: Definition: injection machine nozzle from the mold cavity until the plastic started to flow channel. The shunt from the main channel ﹑ ﹑ gate and cold slug composition. Related to some Chinese and English CAV.NO the first few numbers runner mold nest RUNNER GATE gate CAVITY cavity (A). Mainstream said: 1. Definition: sprue from the injection machine nozzle is in contact with the mold parts, the to the shunt until this paragraph. 2. Design considerations: (1). Main channel of the face shape is usually round. (2). In order to facilitate mold release, main channel are generally produced with a pitch, but if the main channel at the same time through the multi-block board, be sure to pay attention to each sub-departments and regions, the slope of the hole and the hole size. (3). Main channel design according to the size of the flow characteristics of plastic materials to be (4). Main channel used in the design of most of the cone. (Such as icons) production to the attention of: A. small end diameter D2 = D1 (0.5 ~ 1mm) B. small end radius is R2 = R1 (1 ~ 2mm) (Where R1 D1 ﹑ exports were shot injection machine and injection head and the diameter of the ball radius)
