47 when the spindle 51 is rotated by the drive motor 58 fig2 the slide 47 is moved back and forth by it in the directions of arrow 52 the die roller 7 always positively engages the external perimeter of the form block 12 which is placed on the rotary table 5 for this an additional transporting motor 48 not shown in fig5 with a slide connected to it can be provided as described using fig1 and 2 thus movement for the die roller 7 in the directions of arrow 49 toward the rotary table is provided for to prevent tilting of the die roller 7 relative to the rotary table provision can be made for the rotational axis of the die roller 7 itself to be pivotable around a horizontal axis y axis in slide 47 fig6 is a schematic representation of a cross section through the form block 12 and through the opposing part of the die roller 7 in the forming region 85 it can be seen from the drawing that the section 13 is positively held by both a shaped holding fixture on the external perimeter of the form block 12 and by the shaped holding fixture on the external perimeter of.