| 摘要 |
<p>1. A device for manufacturing flat cables, this device comprising means for continuously supplying a flat sheet (12) of parallel metal wires (F) moving parallelly to themselves according to a "longitudinal" direction towards a "downstream" side of the device, conceived to constitute the conducting cores of the flat cable to be manufactured, two extrusion heads (21, 21') being part of a common extrusion device (G21) for extruding hot plastic material in two bands in order to cover this sheet of wires, two rolls (67, 68) facing each other, on either side of this sheet surrounded by the hot plastic material, so that these rolls compress between them this plastic material and thus ensure, in the interval between the wires, a weld between the plastic material situated on one side of the sheet and that situated on the other side, and means (G15) placed downstream of the rolls for driving the flat cable thus formed, characterized in that the axes of the two rolls, which are calenders (67, 68), are parallel to the sheet (12) and perpendicular to the wires, that each of the extrusion heads comprises two rectilinear lips (24, 24a) for delimiting an extrusion slot parallel to the sheet of wires and perpendicular to the wires, one (24) at least of these lips being adjustable, so that the width of the slot can be adjusted, that at least one of the calender rolls comprises a succession of circular hollow grooves (102) separated by relief ribs (104), the disposition of the grooves corresponding to the distance of the wires in the sheet, that a wire-guide (14), which is disposed downstream of the extrusion slots, is supported by a girder (11) extending from upstream of the two extrusion heads (21, 21'), passing through the interval between the two heads at a distance thereto, without propping on the extrusion heads (21, 21'), this girder being maintained in a self-supporting manner on a rack (18) situated upstream of the extrusion heads (21, 21'), so as to render the position of the wire-guide independent of the deformations of the extrusion heads and to avoid the thermical contact between the wire-guide and these heads.</p> |
