Locking device for an injection molding machine
US8337196B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2011 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Apr 11, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/6735
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A locking device, releasably securing a tie bar to a platen, includes a housing with a bearing surface affixed to the platen coaxial with the tie bar, and a rotatable lock nut received in the housing and comprising: an inner bore with radial elements engaging the tie bar to transfer an axial clamp load to the lock nut, the elements defining an engagement portion along a lock nut first axial extent; an outer surface with at least a first step face abutting the bearing surface to transfer the axial damp load to the platen, the step face having a first radially outer extent; and a narrowing section having a second axial extent from a first position having a first diameter proximate the step face to a second position having a second lesser diameter spaced axially towards a second platen, the first diameter being less than the first radially outer extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.