Thermoforming machine tooling assembly with plug assist tooling

摘要

A plug assist tooling assembly for a roll fed, post trim thermoforming machine in which a spider plate connecting plug assist rods is located below one or more support plates holding a clamping plate having an array of holes formed therein each defining a chamber each receiving a plug assist which chambers are sealed when sheet material is clamped by rings encircling the open top of each chamber to enable air pressure communicating to each chamber to exert forming pressure on the section of sheet material within each clamping ring. The support plates are fixed spaced from one of the main platens by standoffs fixed relative to the support plate or plates and the platen, the spider plate located in the same space.