Computer control for glassware forming machine
US4402721A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1979 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Jun 28, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/13
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An I. S. glassware forming machine is controlled by a minicomputer in which a stored sequence of events is accessibly stored in memory such that the identity and condition of a plurality of solenoid valves is programmed to occur at predetermined times in each cycle of the machine. The feeder provides a once per feeder cycle input to the minicomputer and a function generator produces trigger pulses each millisecond so that a factor Q can be calculated to relate these trigger pulses to fractional portions of the cycle, and hence to the event timings stored in memory. The sequence of events stored in memory comprise a threaded list of elements, each of which has four parts. The first part comprises the fractional part of the cycle at which the particular event is to occur and the last part the address of the next succeeding element. The second part contains information to be interpreted for display on an operator's console, and to permit orderly access to the information contained in the four word element. The third part contains the identity of a particular output, and its desired condition (on/off).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.