Analysis of Hole and Groove Elements on the Front and Back of Injection Molded Parts

When analyzing the front and back holes and groove elements of injection molded parts, the shape, position, direction and size of the "hole and groove" on the front and back of the injection molded part in the drawing should be dug out first, which can be divided into the following kind.
① The through hole (phase) and blind hole (groove) in the pattern of the injection molded part whose front and back axes are consistent with the opening and closing directions of the injection mold should be found.
② Find out the small-sized screw holes on the front and back of the injection molded parts and the small-sized screw holes and screws of the metal parts embedded in the injection parts. The through holes (slots) and blind holes (slots) in which the axis of the front and back of the injection molded parts are inclined to the opening and closing directions of the injection mold should be found.
④ Find out the large-sized screw holes and screws on the front and back of the injection molded part. If the direction of the hole, groove and screw hole is parallel to the direction of opening and closing the mold, whether it is the hole in the fixed mold part or the moving mold part In general, the fixed core can be used to form the groove and the groove, while the threaded hole is formed by the threaded core or threaded insert, and then the core is pulled and reset by using the opening and closing movement of the mold. ; It can also be molded with loose blocks, which can be demoulded together with the injection molded parts, and then the loose blocks can be taken out manually; the vertical core-pulling mechanism can also be used for core-pulling and reset after molding, but the specific situation still needs to be analyzed in detail , in order to determine under what circumstances the injection mold is the correct choice to use fixed cores, inserts and loose blocks, or to use vertical core-pulling mechanisms for molding.

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