Rotary die cutter
US4331053A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Jul 30, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/4841
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
There is provided a rotary die cutter for effecting a punching and scribing on a sheet which is fed between a die cylinder and an anvil cylinder disposed in parallel with said die cylinder. The die cylinder is adapted to be rotated in a predetermined direction and provided on its peripheral surface with a knife and a scribing rule. The anvil cylinder is adapted to be rotated in the opposite direction to the die cylinder and provided on its peripheral surface with an anvil for receiving the knife and the scribing rule. There is a mechanism for adjusting the clearance between the die cylinder and the anvil cylinder. A blade carrier is disposed adjacent to the anvil cylinder and slidable in the axial direction of the anvil cylinder. A cutting blade capable of cutting the anvil surface is attached to the blade carrier in such a manner as to move toward and away from the axis of the anvil cylinder. A staged gear type speed changing device is interposed between the driving mechanisms for the die cylinder and the anvil cylinder for and is adapted to change the velocity of the anvil cylinder with respect to that of the die cylinder over a plurality of stages at a fine step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.