Automatic Printing Blanket Changing Mechanism
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Solution Overview
Problem
Current printing technologies for sheet-shaped materials, particularly in metal-depositing machines, face challenges with time-consuming and labor-intensive processes for changing printing forms and blankets, especially with softer materials like rubber blankets that wear out quickly due to sheet metal edges, leading to inefficiencies and increased costs.
Innovation Solution
A printing unit design for sheet-fed printing machines that incorporates automatic or semi-automatic systems for changing printing forms and blankets, featuring a forme cylinder with a printing forme changing device and a transfer cylinder with a printing blanket changing device, utilizing an S-shaped transport path for efficient and secure mounting of printing blankets on cylinders, reducing manual intervention and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual changing of printing blankets is used, then personnel can install blankets, but the process is time-consuming and labor-intensive
Solution Approach 1:
The printing press system performs blanket installation and removal automatically without external personnel intervention. The robot end effector manipulates blankets through automated sequences, making the system self-sufficient for blanket maintenance operations.
Solution Approach 2:
Manual mechanical operations by personnel are replaced with an automated robot system equipped with a specialized end effector. The robot uses programmed mechanical sequences to handle blanket installation, removing the need for manual labor in this repetitive task.
2Manufacturing precision
If softer printing blankets are used, then printing quality improves, but wear from sheet metal edges increases
Solution Approach 1:
The system implements automated blanket replacement when wear occurs. Used blankets are removed and discarded, while new blankets are installed automatically by the robot system, ensuring continuous operation with optimal printing quality without manual intervention for blanket replacement.
3Productivity
If automated blanket changing is implemented, then changing speed increases, but device complexity increases
Solution Approach 1:
The robot end effector serves multiple functions: it grasps and manipulates both printing formes and blankets, performs installation and removal operations, and adapts to different cylinder positions. This multi-functional design consolidates what could be separate complex systems into a single versatile automated unit.
Data Source
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AI summary
The invention relates to a printing unit (02) for printing sheet-shaped printing material (B) having a printing unit cylinder (13) which is configured as a forme cylinder (13), a printing unit cylinder (14) which is configured as a transfer cylinder (14), and an impression cylinder (17) which forms a printing point with the transfer cylinder (14) during operation and comprises holding means (29) for the sheet transport on the circumference, wherein the forme cylinder of the printing unit (02) is assigned an automatic or partially automatic printing forme changing device (34) for changing a cover (19) which is configured as a printing forme (19), wherein the transfer cylinder (14) of the printing unit (02) is assigned a printing blanket changing device (37) for automatically or at least partially automatically changing a cover (24) which is formed by way of a printing blanket (24).