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Semi Automatic Assembly Machine for “Bonnell“ springs

Operation of the machine without any use of compressed air.

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Semi Automatic Assembly Machine, Model BL-80 for “Bonnell“ type innersprings, computerized (PLC controlled) and in a working width of up to 2000 mm (King size).




The machine forms fully automatically the top and bottom helicals to combine Bonnell type innersprings directly into a spring unit. Both helicals are automatically trimmed on all four laterals without any wastage of helical wire. Special devices allow for a quick change-over to a different unit width.


Technical specifications:  
Spring wire gauge:


standard 2.1 mm   -   2.4  mm
other sizes are possible
Helical wire gauge: 1.3 mm   -   1.4  mm
Spring diameter inside:


69 mm   -    85 mm
(gradually adjustable) 
Spring heights: 70  mm   -   180 mm
Working width: 2000 mm
Output / Production:  

Depending on the skill of the operator, normally up to approx. 45‘000 springs

per 8 hours shift.