Abstract:
The inventive axis or roller body on the basis of at least one first thermoplastic material which is processable in an injection molding process, which incorporates the respective desired qualities, whereby this axis or this roller body has at least one first element (1) which has the function of a roller, and has at least one second element (2) which has the function of the support, and possibly includes at least one driving element (3) , at least one stabilizing element (4), at least one function and/or constructional element (5), such as cams, keyways, grooves, levers, pins, bolts, bore holes, dogs, and at least one third element (6), which contributes to the improving and simplification of the squeezing off during the injection process, is characterized in that the respective desired number of said first elements (1) is completely or in part encased by at least one second thermoplastic material which is processable in an injection molding process and includes the respective required qualities, and that the respective thermoplastic materials form together an adhesive or cohesive or mechanical bond attained by the injection molding process, and whereby this bond has been arrived at without the aid of additional materials or outer influences.
Abstract:
The machine comprises: a mobile rest plane for tiles on which the tiles transit in a predetermined advancement direction; a decorating apparatus which comprises a plurality of cylinders, located above the mobile rest plane; means for setting the plurality of cylinders in rotation each about an axis thereof, and with a predetermined stagger of one of the plurality of cylinders with respect to others of the plurality of cylinders. The means for setting the plurality of cylinders in rotation employ a mechanical transmission of drive to the plurality of cylinders which comprises a driven gear coaxially and solidly associated to each of the plurality of cylinders. The driven gears are drawn in rotation, with couplings allowing no relative dragging, by a chain and have diameters which are different from diameters of the plurality of cylinders to which they are solidly constrained. A relative position between any two of the plurality of cylinders is adjustable in a predetermined direction corresponding to an advancement direction of the mobile rest plane so that an angular stagger can be adjusted by means of simple displacements of one cylinder with respect to others.