Mechanical parts ejector for trim press
US5199340A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 1991 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | May 24, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/6484
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus for trimming and ejecting articles integrally thermoformed in a sheet of thermoplastic material from the sheet including a pair of opposed trim dies which will trim parts out of a web of thermoplastic material. Apparatus is provided for pushing the trimmed parts out of the trimming station at a greatly accelerated rate. The apparatus includes a pusher member reciprocally movable in a to-and-fro path of travel between a retracted position and a forward ejecting position. Apparatus is provided for moving the ejector mechanism in the to-and-fro path and includes a toggle linkage mechanism which engages a cam for movement between relatively folded positions on one side of a plane and relatively oppositely folded positions on the opposite side of the plane to rapidly advance and even more rapidly retract the pusher member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.