CNC controlled plastic welding machine for the heating element butt welding of pipes and fittings out of PE and PP from OD 500 up to OD 1200. The machine version itself corresponds to the manual version. The machine is controlled by means of the CNC 3.0 control unit that is setting new standards with respect to the user-friendliness. The various demands for a modern controlling system are fulfilled due to a data input via barcode reading pencil and memory card system as well as an extended memory for up to 30.000 weldings and the sliding control unit.
In combination with the extremely dynamic servo-drive unit it is possible to realize the shortest change-over times with the smallest tolerances at the same time in order that exact joining ways can be followed besides the precise power regulation as an alternative. A further advantage is the automatic welding cycle via a computer-controlled, as an option pneumatically damped swivelling out of the heating element which nearly eliminates any user’s influences and helps realizing the highest repetitive accuracy.
The clamping tools can be moved towards the inserted planer up to a definitive measure in order that the pipes adjust themselves directly at the planer faces. By this order the weld can be prepared in a way that exact and reproducible measures are maintained after the welding procedure.
During the heating cycle it is possible to melt down the parts from both sides at a certain value well-aimed. Friction streams with a different bead building on both sides, e. g. due to moving the heating elements, are thus eliminated by this procedure.
The drives consist of high dynamics which can be used for extremely short change-over times. They allow the building of exact power ramps without causing an overshooting with the typical power peaks and can maintain the necessary joining force over the course of the whole cooling down period very exactly. As an option the same drives can be used for welding procedures with adjustable and very exact joining way limitations. Hereby a precise geometry is secured after the welding.
The plastic welding with power regulation is very problematic with plastics of low viscosity if well-aimed rest melt values have to be created. On the other hand procedures with joining way limitations have the disadvantage that a tension in the weld already occurs after a short cooling down period by the degeneration of the material’s thermal expansion. A combination of both procedures would be ideal during which a joining way limitation is effected to secure the rest melt in the first part of the cooling down period. It should only be made possible to switch to power regulation after exceeding a certain welding force to be defined.
In combination with the extremely dynamic servo-drive unit it is possible to realize the shortest change-over times with the smallest tolerances at the same time in order that exact joining ways can be followed besides the precise power regulation as an alternative. A further advantage is the automatic welding cycle via a computer-controlled, as an option pneumatically damped swivelling out of the heating element which nearly eliminates any user’s influences and helps realizing the highest repetitive accuracy.
The clamping tools can be moved towards the inserted planer up to a definitive measure in order that the pipes adjust themselves directly at the planer faces. By this order the weld can be prepared in a way that exact and reproducible measures are maintained after the welding procedure.
During the heating cycle it is possible to melt down the parts from both sides at a certain value well-aimed. Friction streams with a different bead building on both sides, e. g. due to moving the heating elements, are thus eliminated by this procedure.
The drives consist of high dynamics which can be used for extremely short change-over times. They allow the building of exact power ramps without causing an overshooting with the typical power peaks and can maintain the necessary joining force over the course of the whole cooling down period very exactly. As an option the same drives can be used for welding procedures with adjustable and very exact joining way limitations. Hereby a precise geometry is secured after the welding.
The plastic welding with power regulation is very problematic with plastics of low viscosity if well-aimed rest melt values have to be created. On the other hand procedures with joining way limitations have the disadvantage that a tension in the weld already occurs after a short cooling down period by the degeneration of the material’s thermal expansion. A combination of both procedures would be ideal during which a joining way limitation is effected to secure the rest melt in the first part of the cooling down period. It should only be made possible to switch to power regulation after exceeding a certain welding force to be defined.