Cutter head and knife for cutting sheet material
US4841822A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 1986 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | May 8, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9454
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting head for cutting spread sheet material and using a vertically reciprocating knife achieves a light-weight, low cost, low maintenance and high stroking speed design through a unique combination and arrangement of parts wherein the knife drive motor is isolated from rotation with the knife about the theta axis without using a conventional swivel mechanism. The knife has a leaf spring portion directly connected to the eccentric member, fatigue failure of the leaf spring portion of the blade is inhibited by antivibration stops and by a varying cross-section, a simple sharpener mechanism sharpens the blade on either one or both side faces, and a roller guide restrains the lower portion of the blade to the vertical axis with minimum frictional loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.