Method and an apparatus for stepwise movement of a reinforcement grid
US4360724A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1980 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Feb 13, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21F27/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to apparatus for and a method of moving a grid (G) longitudinally in stepwise fashion through a multi-spot welding machine by means of an element (5) arranged to engage a transverse rod (D) of the grid at a starting position, move the grid (G) forward through a number of steps at a first mean speed, and thereafter disengage from the rod (D) and return to the starting position at a mean speed greater than the first mean speed. The movement of the element (5) is controlled by a computer (31) so as to return to its starting position if the time required for its return from the position which it would occupy after the next step is greater than a preset maximum standstill time between steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.