Plastic Injection Molding Lifter

Designing of lifter used for internal undercut in injection mold.

Plastic injection molding lifter. Common structures and types of the lifters as shown in the following figure. This design is the same as movable mold lifter but the power comes from the clamping force of plastic parts to the lifter and spring. The body and the forming parts. If main insert use harden up steel then lifter need azotizing process.

The maximum slope a 15 of the lifter the friction surface of the lifter is nitriding. Sometimes there are some features on b side of surface and they create interference in mold separation features like snaps dog house etc they are in internal undercut region. Base can install several lifters. So a lifter needs to be employed in those areas.

Generally speaking a lifter generally consists of two parts. 3 plates mold abs injection process ejector ejector block ejectors gate design good mold design guidelines guide pin hoist ring holding pressure hot runner hot sprue cold runner industrial development trending injection mold company injection molding gate injection pressure latch lock lifter lifting eyebolt main insert size mold adhesion mold. Plastic injection molding process. The lifters for plastic injection mold.

If the width less than 12mm use lifter with base 2 lifter with base stop block steel 738. Lifters are critical components that impact tool maintenance repair and injection molding. In this case we raised the lifter the opposite of pre load to compensate. The lifter also needs to add guide pin and guide bush.

Mold lifter design lifter material if main inserts use pre harden steel then lifter use 1 2344 for plastic injection mold. Design considerations materials used wear surfaces. Leave a comment mold design by jackie. Square part sticking issues fitting spotting and timing preload.

Buddy helper pins deflection shape round vs. Mechanical injecion mold slide design standards hydraulic injecion mold slide design standards injection mold lifter standard injection mold design. The lifter structure shown in the figure below can be used. The plastic pressure was deflecting the lifter shank and pushing the lifter down during the injection process.