In the daily production of Mitsubishi series printing presses, gripper bar repair is one of the most common issues encountered by press operators and maintenance personnel. These Japanese-made machines are known for high durability and stable ink density, with cylinder diameter designs that balance speed and quality. If not addressed in a timely manner, the consequences can range from compromised registration accuracy and print quality in minor cases, to extended downtime in severe cases.
I. Typical Fault Symptoms: Uneven gripper bite force causing sheet tail-end flapping and unstable registration; worn gripper pads leaving marks on the paper.
II. Common Q&A:
Q1: What is the most common cause of gripper bar repair?
A: Mainly fatigue of gripper springs leading to reduced bite force; worn gripper pads or contamination with ink.
Q2: What should be noted when handling this on Mitsubishi presses?
A: It is necessary to work in conjunction with the MAC automated control system / CCB ink fountain, following standard operating procedures.
Q3: How can recurrence be avoided?
A: Regularly calibrate gripper bite force.
III. Handling Steps:
Use a tension gauge to calibrate each gripper for consistent bite force; replace worn gripper pads and clean them; repair or replace the opening/closing cam; check the straightness of the gripper shaft. The above methods also apply to models such as the D3000, DiaPress, Diamond series, and 3F. For actual operations, refer to the MAC automated control system / CCB ink fountain and on-site conditions. For complex situations, it is recommended to seek professional maintenance assistance through the printm.cn platform.
