Digital printing roller

• Main Authors: XI HONGBING, LIU HAO, YU QI, WANG XIAODONG, ZONG BING
• Format: Patent
• Language: Chinese; English
• Published: 03.04.2013
• Subjects: LINING MACHINES; PERFORMING OPERATIONS; PRINTING; PRINTING MACHINES OR PRESSES; STAMPS; TRANSPORTING; TYPEWRITERS

The invention relates to a digital printing roller which is characterized in that a gripper mechanism adopts a gripping tooth and vacuum nozzle combined structure; a plurality of gripping teeth extending in the axial direction of the roller are mounted at the front end of the roller and are used for occluding the front end of paper; a plurality of vacuum nozzles extending in the axial direction of the roller are arranged at the tail part of the roller and are used for adsorbing the tail end of paper; and the roller adopts an axial and circumferential breadth adjustable structure. As to the paper, the printing roller receives paper from a paper transmitting roller through the gripping teeth, when the tail end of paper passes through a joint point, the nozzles at the tail part of the roller adsorb paper, and then an automatic paper tail end spreading mechanism is used for controlling the vacuum nozzles to rotate to enable air suction surfaces of the vacuum nozzles to deflect towards two sides to flatten paper,