注塑成型每一循环中，塑件必须从模具中凹、凸模上脱出，完成脱出塑件的装置

In each cycle of injection molding, the plastic parts must be released from the concave and convex molds in the mold. The device that completes the removal of the plastic parts is called the demoulding mechanism, also known as the ejection mechanism. <br>6.1.1. Design principles The <br>following principles must be followed when designing the demoulding mechanism: <br>(1) Because the plastic tightly holds the punch, the point of action of the ejection force should be as close to the punch as possible; <br>(2) The ejection force should act on the plastic part the largest part of the strength and rigidity, such as reinforcing bars, flanges, thick, etc., but also the active area as large as possible, in order to prevent plastic deformation and damage; <br>(3) to ensure good appearance of plastic parts, the ejection position, should try disposed inside the plastic parts or <br>plastic parts little effect on the appearance of the site; <br>(4) if required ejection portion provided on the base surface when using plastic parts or assembly, does not affect the plastic <br>member size and use, generally jack At the contact with the plastic part, the plastic part is recessed by 0.05∽0.1mm; otherwise, the plastic part will be raised, affecting the flatness of the base surface.

Injection molding in each cycle, the plastic parts must be from the mold on the recess, convex mold off, the completion of the removal of the mold device called the release mechanism, also known as the top out mechanism.<br>6.1.1, Design Principles<br>The release mechanism is designed in accordance with the following principles:<br>(1) Because the plastic shrinks when holding the convex mold, so the top force of the action point should be as close as possible to the convex mold;<br>(2) The top force should act on the most rigid and strong parts of the plastic, such as reinforcing strips, flanges, thick walls, etc., the action area is also as large as possible, to prevent deformation and damage of the plastic parts;<br>(3) In order to ensure a good appearance of the plastic parts, the top position should be located as far as possible inside the plastic parts or<br>The parts where the appearance of the plastic parts has little effect;<br>(4) If the top out site needs to be located on the substrate used or assembled by the plastic, it does not affect the plastic<br>Piece size and use, the general top bar and the plastic parts in contact with the concave into the plastic part 0.05 x 0.1mm;

In each cycle of injection molding, the plastic part must be separated from the concave and convex die of the mold. The device to complete the removal of the plastic part is called the demoulding mechanism, also known as the ejection mechanism.<br>6.1.1 . design principles<br>The design of demoulding mechanism shall follow the following principles:<br>(1) Because the plastic shrinks to hold the punch, the point of action of the jacking force should be as close to the punch as possible;<br>(2) The jacking force shall act on the parts with the largest rigidity and strength of the plastic part, such as the stiffener, flange, thick wall, etc., and the area of action shall be as large as possible to prevent the deformation and damage of the plastic part;<br>(3) In order to ensure a good appearance of the plastic part, the ejection position shall be set inside the plastic part as much as possible or in the opposite direction<br>Parts with little influence on the appearance of plastic parts;<br>(4) If the ejected part needs to be set on the base surface of plastic parts for use or assembly, it will not affect the plastic<br>Dimension and use of parts, generally, plastic parts are recessed at the contact of ejector pin and plastic parts zero point zero five A kind of 0.1mm Otherwise, the plastic parts will bulge, which will affect the flatness of the base surface.<br>