Some design mistakes for injection molding
Using sharp corners and edges. Sharp corners and edges can cause stress concentration, which can lead to part failure. It is best to round off corners and edges whenever possible.
Not adding a draft. The draft is a slight taper that is added to the vertical surfaces of a part to make it easier to remove from the mold. If the draft is not added, the part may stick to the mold and be difficult to remove.
Using uneven wall thicknesses. Uneven wall thicknesses can cause warpage and other defects in the molded part. It is best to keep wall thicknesses as uniform as possible.
Creating undercuts. Undercuts are areas of the part that cannot be reached by the mold's ejector pins. This can make it difficult or impossible to remove the part from the mold. If undercuts are necessary, they should be minimized.
Not considering the mold design. The design of the mold can have a significant impact on the quality of the molded part. It is important to work with a mold designer who has experience with injection molding to ensure that the mold is designed correctly.
By avoiding these common design mistakes, you can help to ensure that your injection molded parts are of high quality and meet your customer's expectations.
