Apparatus for and method of controlling temperature in plastic compression molding machine
US5108672A · kind A · utility
7Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Jun 27, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/7285
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The temperatures of structural members of a plastic compression molding machine are controlled so that the socket-and-spigot gap between the dies is maintained at a constant size or so that changes in the socket-and-spigot gap between the dies is maintained below an allowable limit. Working oil for the lift cylinder is passed through passages in at least the bolster, the slide, and the frame. A temperature controller can include heat exchangers and/or flow-rate control valves to control the temperature and/or flow rate of the portion of the working oil to be circulated through the respective structural member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.