METHOD AND DEVICE FOR MOLDING FILTER ELEMENT

摘要

A power-driven machine is with fed fan shaped sections of filter cloth and a press action forms transverse corrugations, thereby reducing its radial length. At the next stage wedges are inserted into each corrugation and a pantograph linkage operates flexible straps to bend the filter element around a central mandrel to form a semi-circle. The wedges then move outward under the control of a similar linkage to reform the required contour of the corrugation. The filter element is then ready to be bent in a full circle to complete its fabrication. The machine can be adjusted to produce various sizes of element.