Mold clamping mechanism of molding machine
US6626658B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/1764
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A ball spline nut is provided in each of tie bar penetrating holes formed in a moving platen constituting a mold clamping mechanism of an injection molding machine. On the other hand, a portion of a tie bar one end of which is fixed to a stationary platen, engaging with the tie bar penetrating hole in the moving platen, is made a ball spline shaft. Since there is no clearance between the ball spline shaft and the ball spline nut engaging therewith, in mold clamping and mold releasing processes, the posture of a movable mold attached to the moving platen with respect to a stationary mold attached to the stationary platen is always kept constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.