Haven dual-blade shear cutoffs are prevalent in the automotive brake and fuel line industry. There are two models to choose from; Model #801 (single axis) and Model #803 (dual-axis). Each model can be fed from stick or coil; coil being the dominant method. Cut length control can be either fixed tube stop or by servo feed roll.
In this Case Study, the Model #803, fed from coil, was specified to satisfy volume requirements. In order to maximize the feed speed of this machine, Haven recommends using a loop accumulator to balance the uncoiling action to the cutoff feed rates. In this case, the customer did not have the floor space for the accumulator. Haven engineers had to design a powered un-coiler with variable speed capability that would automatically adjust to infinite length setups. The unwinding motion needed to be smooth; no jerking of the material and no speed reduction due to longer lengths (maximum 2000mm). The resultant design combined variable speed drive control with an electronic speed feedback system. This compact package, allowed the un-coilers to be placed relatively close to the cutoff, reducing overall floor spare. Other features in this cut-to-length line included, electronic vision splice detection, servo feed and length control, and splice scrap separation.
Results: Innovation and proper use of available technologies, enables Haven to offer solutions for a wide variety of applications. Haven’s flexibility, both mechanically and electronically, demonstrates the breadth and depth of our capabilities. Haven is a full service, turnkey supplier to the tube processing industry.