Automatic tool centering system for the production of rubber hoses

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  • Manual head adjustment now replaced by automated process
  • Suitable for hose diameters from 3 to 100 mm
  • Short set-up times, retrofitting possible

KraussMaffei Berstorff will exhibit a straight-through extrusion head with hydraulic tool centering system and X-ray measuring device at the upcoming IRC (International Rubber Conference) in Germany. This system will enable rubber hose producers to improve product quality and minimize raw material consumption.

Tool Centering System

ToolCenteringSystem: The straight-through extrusion head with hydraulic tool centering system reduces material consumption (source: KraussMaffei Berstorff )

Short set-up times

The straight-through extrusion head is designed for minimum set-up times and high productivity. In the front head area, the hose wall thickness is adjusted by an axially moveable die as in previous systems. Radial centering is ensured by a hydraulic system that acts on the newly designed die holder, which substantially reduces the setting efforts during start-up and production.

Manual head adjustment now replaced by automated process

Using the X-ray measuring device in combination with the tool centering system, the manual head adjustment is now replaced by an automated process. The device continuously measures the wall thickness, eccentricity and outside diameter of the rubber hose. The hydraulic wall thickness centering system is then adjusted with high precision to one-hundredth of a millimeter.

pipe samples

KraussMaffei Berstorff’s hydraulic tool centering system is suited for hose diameters ranging between 3 and 100 mm (source: KraussMaffei Berstorff)

Retrofitting in existing extrusion lines also possible

The new system saves time and material during equipment set-up and enables continuous production monitoring to reduce wall thickness tolerances. Retrofitting the hydraulic tool centering system in existing hose extrusion lines is also possible.



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