Apparatus for blow molding
US4155696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1978 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Mar 8, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C49/70
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process and apparatus for blow-molding hollow bodies in a mold having half-molds which are closed along a mold joint during blow molding and are laterally displaced with respect to one another to open the mold for removal of the formed hollow body. The half-molds are shaped to form a concave bottom on the hollow body and when the half-molds are opened they impose a translation movement on the hollow body. A plug is formed at the bottom of the hollow body during molding which plug is seized by pincers prior to the opening of the mold such that the hollow body is supported by the pincers during mold opening. The pincers are displaced during mold opening, in translation parallel to the plane of the mold joint, over a distance at least equal to that imposed on the hollow body by the half-molds during opening of the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.