How to determine the parting line of plastic mold holder

Parting line is also called parting line, mainly to see the design requirements and appearance requirements of the product, but also to consider whether the plastic mold processing is feasible and the position of the mold follow-up glue. Plastic mold products in any case will have a more obvious parting line mark, in turn, look at the parting line can know the structure of the mold frame.

Before designing the parting surface, the shape and position of the parting line on the plastic part must first be determined. When the opening direction is determined, it is easier to determine the parting line. Because the projection of the parting line in the direction of the opening mold overlaps with the external contour of the plastic part projected in that direction, a straight line parallel to the direction of the opening mold can be used to move along the external contour of the object projected, and the intersection of the line and the surface of the object at each position can be found.

(1) The line intersects with the surface of the object at a point, then the point is the point on the parting line.

(2) The straight line intersects the surface of the object in a straight line segment, then any point in this straight line segment can be used as a point on the parting line, and the specific determination of which point is a point on the parting line is generally based on the principle of shortest connection with adjacent points. It can also be determined by interactive means.

(3) The straight line and the object intersect at multiple points and multi-segment straight lines, indicating that the intersection of the global approach cone here and the direction of the opening mold is 0, so the core is designed in this area, and the parting line should be determined according to the shape and size of the core.