Device for a roller body of a rotation roller and method for manufacturing the device, printing roller adapter and printing roller

A printing roller adapter, comprising:

• an outer hollow body having a cylindrical shape and comprising an internal cavity;
• an inner body having a cylindrical shape and provided in an assembly with the outer hollow body in the internal cavity of the outer hollow body;
• a centering device configured for centrally positing the inner body in the internal cavity during installation of the assembly, wherein the centering device comprises a spacer;
• and
• a material bridge in opposing end sections of the assembly, wherein for the material bridge the following is provided:
• the material bridge is formed by a filler material, which is applied and cured in a space at the end sections of the assembly between an inner surface of the outer hollow body and an outer surface of the inner body, wherein the spacer is provided in a side end section of the assembly in the space and wherein the filler material at least partially fills in a cavity of the spacer;
• the material bridge is extending through the cavity of the spacer;
• the material bridge is extending through openings in a wall of the spacer, whereby the openings on the inner surface of the outer hollow body and on the outer surface of the inner body are arranged opposite each other;
• the material bridge is provided in contact with the inner surface of the outer hollow body and the outer surface of the inner body;
• the material bridge is fully formed between the inner surface of the outer hollow body and the outer surface of the inner body;
• and
• the material bridge forms a dimensionally stable connection between the hollow body and the inner body in the assembly.

A method for manufacturing a device for a roller body of a rotation roller, comprising:

• providing an outer hollow body having a cylindrical shape and comprising an internal cavity;
• providing an inner body having a cylindrical shape;
• producing an assembly in which the inner body is positioned in the internal cavity of the outer hollow body, whereby a centering device comprising a spacer is applied for arranging the inner body in the internal cavity in a position providing a distance between the inner body and the outer hollow body;
• and
• producing a material bridge in opposing end sections of the assembly, wherein producing the material bridge comprises:
• forming the material bridge by a filler material, which is applied and cured in a space at the end sections of the assembly between an inner surface of the outer hollow body and an outer surface of the inner body, wherein the spacer is provided in a side end section of the assembly in the space and wherein the filler material at least partially fills in a cavity of the spacer;
• wherein the material bridge extends through the cavity of the spacer;
• wherein the material bridge extends through openings in a wall of the spacer, whereby the openings on the inner surface of the outer hollow body and on the outer surface of the inner body are arranged opposite each other;
• wherein the material bridge contacts the inner surface of the outer hollow body and the outer surface of the inner body;
• wherein the material bridge is fully formed between the inner surface of the outer hollow body and the outer surface of the inner body;
• and
• wherein the material bridge forms a dimensionally stable connection between the hollow body and the inner body in the assembly.