Methods of severing plastic between blow molds in a rotary blow molding machine
US3932572A · kind A · utility
0Cited by
10References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1974 |
| Grant date | Jan 13, 1976 |
| Priority date | — |
| Expiry date | Jun 19, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C49/50
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Plastic is cleanly severed between closely adjacent inner sections of radially operable blow molds in a rotary molding machine during mold opening by means of a wiper blade on the trailing face of the inner section of one mold angularly projecting toward and having its rear edge engaging the forward face of the next succeeding inner mold section, each such inner section being spring mounted and arranged because of the mold-opening cam configuration, to spring outwardly such that the rear edge of the blade slides along the forward face of the succeeding mold to consistently shear the plastic between such edge and such forward face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.