User manual HUSKY FL-RRR03A

[. . . ] Rotating Ratchet Ring Advanced Unscrewing Technology Our Rotating Ratchet Ring (RRR) design offers a unique solution for unscrewing closures. In conventional unscrewing molds, the core rotates as the stripper plate moves forward, releasing the closure thread for ejection. [. . . ] COMPLETE MOLD BASE We provide a fully engineered complete mold base-including hydraulic cylinders, air pistons, racks, cams, a hot runner, and the drive system for the ratchet rings. This allows the moldmaker to concentrate on the molding surfaces. MOLD OPERATION Stripper plate Cam follower Bearings Cam Rotating ratchet ring Stationary core Pinion Compressed air Rack Gear Unidirectional clutch Air piston STAGE 1 1. As the mold opens, air pistons move the stripper plate forward, taking up a small space between the cam and cam follower. This provides initial clearance between the core tapers and the rotating ratchet rings. A hydraulic cylinder (not shown) pulls the cams and rack(s), driving a series of pinions. Each pinion drives a cluster of rotating ratchet rings that turn the closures by means of small teeth embedded in the skirt of the closure. The forward movement of the stripper plate maintains this grip as the part is unscrewed. The rate at which the stripper plate moves is controlled by the cam and cam follower design. At the end of the stripper plate movement, compressed air aids in part ejection. STAGE 2 1. Prior to mold close, the air pistons return the stripper plate to close position before the rack/cam mechanism is repositioned. The unidirectional clutch in the pinion's gear allows the rack and cam structure to be reset after the mold closes. All major components are accessible from the front for easy maintenance. www. husky. ca www. hotrunners. com Americas & Asia 288 North Road Milton, Vermont, USA 05468 Toll Free (800) 516 9590 Tel. (802) 859 8000 Fax (802) 859 8321 Europe Hot Runner Mold Building B. P. [. . . ] "Husky" is a trademark owned by Husky Injection Molding Systems Ltd. Other company, product, and service names may be trademarks of their respective owners. [. . . ]