| 摘要 |
Device and method for manufacturing of concrete tile bonnets showing a collar at one end by extrusion of a crude concrete mass onto pallets (3) which are conveyed past an extrusion unit (4) comprising a movable packing block (4.5), a cross roll unit (5) being arranged after the extrusion unity (4) and comprising a cross roll (5.1) that is rotary around an axle extending in the direction of motion of the pallets (3) and that is caused to move in a course above the pallet (3) in contact with the crude, extruded upper side of the tile bonnet and that then imparts to the tile bonnet an upper side with at least one collar protruding from the upper side. |
