Electronically regulated apparatus for coiling springs

Details Electronically regulated apparatus for coiling springs Electronically regulated apparatus for coiling springs

1996-05-10

1998-02-03

Briggs, William R.

Metal working

Plural diverse manufacturing apparatus including means for...

Binding or covering and cutting

72135, 140103, B21F 302

Patent

active

057131155

ABSTRACT:
Described is an electronically regulated coiling apparatus for mattress and upholstery springs comprising essentially a wire draw-in, a wire guidance, a cutting device and a bending device for a wire to be processed, and due to short drive trains equipped with few transfer elements, in particular for the bending device, improved torsional rigidity and flexural strength of the particular drive train is attained. The electronically regulated servomotors used according to the invention can therefore transfer their movement directly onto the bending tools and the drive rollers by interconnecting few transfer elements. This permits bending a wire with decreased tolerances into a corresponding spring.

REFERENCES:
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patent: 4112721 (1978-09-01), Takase
patent: 4444036 (1984-04-01), Shibata et al.
patent: 4594869 (1986-06-01), Matsuoka
patent: 4873854 (1989-10-01), Russell et al.
patent: 4991277 (1991-02-01), Itaya
patent: 5243746 (1993-09-01), Shinichi
patent: 5259226 (1993-11-01), Itaya
patent: 5442944 (1995-08-01), Lu

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