The Thomas Machines S.a.

The Machines Yvonand Sa

Thomas Bernauer

Eberhard Kertscher

A device for continuously producing drip irrigation tubes comprises an extruding device () for producing a tube body (), a calibrating device (), and a cooling device () for the tube body (). In addition, a feeding device () for feeding dosing elements () into the tube body () and means for joining these dosing elements () to the inner wall of the tube body () are provided. This feeding device is comprised of a pressing element () that is formed by the end area of the guideway () while protruding into the extruded tube body (), and of a pressing member () that can be pressed against the tube body () from the exterior in the vicinity of pressing element (). The calibrating device () is made of a tubular body () whose insertion area () narrows to the desired diameter of the tube body () and whose longitudinally elongated body area () protrudes into the cooling device (). The longitudinally elongated body area () of the tubular body () of the calibrating device () is provided with a recess () into which the pressing member () protrudes so that the pressing and joining process of the dosing elements () against/to the inner wall of the tube body () ensues inside the calibrating device (). This results in the tube body () not cooling too quickly before the joining process, and in an optimal joining to the dosing elements () without requiring the dosing elements to be preheated.

Growing community of inventors

Neuchâtel, Switzerland

Thomas Bernauer