Wireworking – Joining wire – Electric welding
Patent
1999-03-30
2000-11-21
Larson, Lowell A.
Wireworking
Joining wire
Electric welding
140 71R, B21F 2710
Patent
active
061488739
ABSTRACT:
A suitable automatically operating apparatus is proposed for producing reinforcing cages for rectangular pipes made of concrete. Longitudinal-wire sections, which are parallel to the pipe axis, are held together in a framework. The latter essentially comprises a perforated frame, which cannot be moved in the longitudinal direction, and a receiving frame, which can be displaced relative to the perforated frame. Rectilinear transverse-wire sections, angles or bent brackets are welded onto the longitudinal-wire configuration, to be precise onto the respective side surfaces of the longitudinal-bar configuration in a freely selectable manner. Fitting apparatuses which can be displaced perpendicularly with respect to the longitudinal-wire sections are used for this purpose. In addition to the wire thickness, it is also possible to select the spacings between the transverse-wire sections provided in each case. In the example, the framework can be rotated about a vertical axis on a carousel, in each case two mutually opposite fitting apparatuses interacting with two welding apparatuses arranged transversely thereto. The necessary transverse-wire sections are finished off in each case during the welding operation. The completed reinforcing cages are removed, and inserted one inside the other, by crane.
REFERENCES:
patent: 3579259 (1971-05-01), Kato
patent: 5446254 (1995-08-01), Ritter et al.
Kinberg Robert
Larson Lowell A.
MBK Maschinenbau GmbH
Spencer George H.
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