How do we determine the parting line?

Update:03-09-2020
Summary:The parting line is also called the parting line, which mainly depends on the design requirements and appearance require...

The parting line is also called the parting line, which mainly depends on the design requirements and appearance requirements of the product, but also considers

whether the processing is feasible and the position of the mold to follow up the glue. No matter how the plastic product is parted, there will be more obvious parting line marks. On the other hand, you can know the structure of the mold by looking at the parting line. The following Dragon Resources tells you how to determine the parting line:
Determination of parting line.


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


(1) The straight line intersects the surface of the object at a point, then this 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 on this straight line segment can be used as a point on the parting line, and specifically determine which point is the point on the parting line. Generally, it is the adjacent point The shortest point connection is the principle. It can also be determined interactively.
(3) The straight line intersects the object at multiple points and multiple straight line segments, indicating that the intersection of the global approach cone and the mold opening direction is 0, so the core-pulling is designed in this area, and the parting line should be determined according to the shape and size of the core-pulling .