Thermoforming machine tooling assembly with plug assist tooling
US6648624B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Apr 14, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/048
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.