Balcke-durr Aktiengesellschaft

Balke-durr Ag

Peter Denner

Alfred Joekel

Alfred Jockel

Hans Langen

Egon Ernst

An apparatus invention relates to an apparatus for pulling transverse fins onto a plurality of pipes which are arranged fixed in position alongside of each other by means of carriers the ends of which are operatively supported on respective endless carrier-conveyor chains between a working position engaging the fin plates and a disengagement position releasing the fin plates, the carrier being provided with at least one support foot which holds the carrier in the working position. The support foot is supported on support members of a control device which holds the carriers in the working position on the transport path until release of the transverse fins and releases them for swinging depending on the fin spacing and the transverse fins which have already been pulled-on, the point of release moving in a direction opposite the direction of movement of the carrier conveyor chains. In order to reduce the friction and increase the reliability of operation, the fin pull-on path is divided into a transport region and a control region. Furthermore the control device comprises a control side which is arranged at the end of the transport path and on which the carriers support themselves by at least one support foot.

Apparatus for pulling transverse fins onto a plurality of pipes

An apparatus for pulling transverse fins onto a plurality of pipes which are arranged fixed in position alongside of each other by means of carriers the two ends of which are swingably supported on respective endless carrier conveyor chains between a work position engaging the fin plates and a disengagement position releasing the fin plates, the carriers being provided with a support foot which holds the carriers in the work position. The support foot is supported on support members of an endless control chain which extend over the respective length of the pull-on region for the transverse fins and are moved by the control chain opposite the direction of movement of the carrier conveyor chains for the displacement of the point of release of the carriers corresponding to the transverse fins which have already been pulled on. In order to reduce the friction and increase the reliability of operation, at least one control chain is constructed as a three-strand chain the outer strands of which are supported on stationary support rails while its central strand is a direct support for the support feet of the carriers solely in the pull-on region.

A device for producing finned heat transfer tubing of oval cross section by winding one or more continuous metal strips around the tubing in the form of spiral fins, the contact edge of the metal strip being shaped prior to winding to present a hook-shaped ledge with an acute enclosed angle, and the neutral axis for on-edge bending being shifted to the vicinity of the contact edge by applying to the strip a tensile stress and to its upper half additional transverse compression stress, using a stretch roller and a cooperating winding guide. A lathe-like machine semi-automatically winds two metal strips onto successive lengths of oval tubing, using a carriage with two pivotable winding arms and two strip reels.

Method and device for winding spiral fins onto oval tubing

A method and device for producing finned heat transfer tubing of oval cross section by winding one or more continuous metal strips around the tubing in the form of spiral fins, the contact edge of the metal strip being shaped prior to winding to present a hook-shaped ledge with an acute enclosed angle, and the neutral axis for on-edge bending being shifted to the vicinity of the contact edge by applying to the strip a tensile stress and to its upper half additional transverse compression stress, using a stretch roller and a cooperating winding guide. A lathe-like machine semi-automatically winds two metal strips onto successive lengths of oval tubing, using a carriage with two pivotable winding arms and two strip reels.

Growing community of inventors

Ratingen, Germany

Peter Denner