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IN SET-UP MODE: 35. Stroke the ejectors forward and backward a few times to make sure they function properly and nothing is binding or squealing. 36. Wipe off any dirt or grease you may have deposited on the machine and clear the area of your tools and equip- ment. If you want to maintain a clean work environment, lead by example. The above procedure ensures that the mold is securely fastened to the platens and will not shift or loosen during produc- tion. But there is one final step to consider, which will help prevent premature tool wear and rejected parts. On occasion you might hear the leader pins hit the bushings when you slowly close the mold. This is not uncommon when hanging a mold that doesn't have a lifting strap or interlocks that help verti- cally align the two mold halves. To correct ABOUT THE AUTHORS: John Bozzelli is the founder of Injection Molding Solutions (Scientific Molding) in Midland, Mich., a provider of training and consulting services to injection molders, including LIMS, and other specialties. Contact john@scientificmolding.com; scientificmolding.com. Ernie Di Siro is the Molding Manager for Nordson EFD LLC, a proprietary injection molder. He has 40 years of injection molding experience – starting out as a machine operator. Contact ernie.disiro@nordsonefd.com Jim Fattori is a third-generation injection molder with more than 40 years of molding experience. He is the founder of Injection Mold Consulting LLC, and is also a project engineer for a large, multi-plant molder in New Jersey. Contact jim@injectionmoldconsulting.com; injectionmoldconsulting.com. John Klees is a retired plastics specialist with more than 40 years of processing, part and mold design and construction expertise. Piotr Witaszek is the plant manager for LMT-Mercer Group, Inc., a custom injec- tion molder with multiple facilities. He has 25 years of injection molding experience, starting out as a machine operator. Contact pwitasek@lmtproducts.com. The general procedure outlined here requires the pump to be turned on and off repeatedly. This and all other applicable safety requirements must be observed. © Branson Ultrasonics Corporation 2017. The Emerson logo is a trademark and service mark of Emerson Electric Co. Emerson offers a wide array of Branson-brand advanced solutions for superior plastics-joining, metal-welding, and precision-cleaning equipment. Through Branson's line of advanced ultrasonic welding, as well as leading-edge laser, vibration welding, and more, Emerson technologies assure you of: • The right solution for your specifi c application through our process-neutral approach • Application experience and technical expertise • The world's premier resource for plastics-joining technologies • True global support and rapid-response service BransonUltrasonics.com Americas 203-796-0400 l Europe 49-6074-497-0 Asia 86-21-3781-0588 Unmatched experience in material-joining technologies Blendtec case study available upon request. Unmatched experience Blendtec case study the problem, the mold half attached to the moving platen should be "re-hung" with a slight amount of lift or pre-load from the hoist. This usually helps, but does not solve the root cause, which is platen tilt. Platen tilt will be the subject of a future article. (If readers think anything should be added here, the authors would like to hear from them.) @plastechmag 55 Plastics Technology M O L D M O U N T I N G