Mechanism for closing a mold in plastic injection-molding machinery that accommodates a large and heavy molding tool
US5547367A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1995 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Feb 2, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/1761
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mechanism for closing a mold in plastic injection-molding machinery that accommodates a large and heavy molding tool (5). One stationary chuck (2) rests machinery's base (1), while another chuck (3) travels on a longitudinally movable carriage (4). Each chuck (2,3) accommodates one half of the mold (5) and is aligned by poles (6) which can extend through the chucks. The carriage has a number of bearing sites (4.4) mounted on its bottom surface proximate to its corners. Suspension crossarms (10.2, 14.2) are rotatably mounted to the bearing sites (4.4). The rear suspension crossarms (10.2, 14.2) are mounted using a shaft (11) which has two eccentric portions (11.1) with opposite eccentricities. The non-eccentric portions (11.2) of the shaft are connected to one another by a torsion rod (12) and are rotatably mounted in the bearing sites (4.4). The rear suspension crossarms (10.2, 14.2) are rotatably mounted on the eccentric portions (11.1) of the shaft (11). Rocking shoes (10.1, 14.1) are mounted, preferably rotatably, to each of the suspension crossarms (10.2, 14.2), preferably in a calotte joint. The rocking shoes (10.1, 14.1) ride on rails of the base (1) of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.