Device for production of drip irrigation tubes

A device for producing a drip irrigation tube, comprising an extrusion apparatus for extrusion of a tube body made of a thermoplastic synthetic material, a device for inserting metering elements in the extruded tube body, a roller for pressing and connecting the metering elements in the tube body, calibrating devices for adjusting the extruded tube body to the desired outer shape, cooling devices for cooling of the extruded tube body with coolant, and a drilling device for making outlet holes in the vicinity of the metering elements for permitting the passage of water, wherein the roller is disposed in a pre-cooling chamber and is provided with a sensor which upon lifting of the roller during passage of a metering element emits a signal to a control unit which emits a signal to the drilling device, and wherein a further chamber is disposed following the pre-cooling chamber, the drilling device is disposed in the further chamber, a main cooling chamber is disposed after the further chamber, and the calibrating device is inserted between the further chamber and the main cooling chamber.