Arrangement for printing machine plate cylinder zero position adjustment
US4635546A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1986 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Mar 4, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F13/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An arrangement for printing machine plate cylinder adjustment to zero position includes an evaluation circuit which is interposed between a potentiometer which issues an electrical signal representative of the instantaneous position of an adjustment transmission driven by a motor, and motor protection devices for the two senses of rotation of the motor. The evaluation circuit includes an A/D converter unit which is connected at its input side with the potentiometer and at its output side via at least one equivalence circuit and a flip-flop with respective AND-gates which are arranged ahead of the motor protection devices and are also connected at their inputs directly to an output of the A/D converter unit, and at least one additional AND-gate which is connected via at least one up-counter with the equivalence circuit. The arrangement further includes an incremental measuring system including a pulse generator having an output connected to a pulse AND-gate and to the further AND-gate, a counter having an input connected to the output of the pulse generator, and a resetting input connected to the output of said pulse AND-gate, and an indication and control device connected at its in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.