Machinery for automated manufacture of formed wire innerspring assemblies
US6155310A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1998 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Sep 11, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21F33/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Machinery for automated manufacture of formed wire structures such as innerspring assemblies for mattresses and seating and flexible support structures includes one or more coil formation devices configurable to produce generally helical spring coils having a terminal convolution which extends beyond an end of the coil; a conveyor system having a plurality of flights slidably mounted upon a continuous track and connected to a chain and driven by an index driver; a coil transfer machine which removes a row of coils from the conveyor and inserts the coils into an innerspring assembler; an innerspring assembler having first and second sets of coil-engaging dies in a parallel arrangement, each set of dies having an upper row positioned over a lower row, the dies being mounted upon carrier bars which are vertically translated within the innerspring assembler to diverge the upper and lower dies of a set to allow positioning of a row of uncompressed coils between the upper and lower dies, and to converge the upper and lower dies upon a row of coils to compress and thereby securely hold the coils in a row; a coil interconnection device for interconnecting adjacent rows of coils in the firs…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.