In the daily production of Komori series printing presses, gripper bar maintenance is one of the most common issues encountered by press operators and maintenance personnel. These Japanese machines are known for their stability, with mature H-UV drying and automatic registration systems, as well as uniform ink distribution across the ink train. If not addressed in a timely manner, the consequences can range from compromised registration accuracy and print quality to extended downtime in severe cases.
I. Typical Fault Symptoms: Uneven gripper bite force causes sheet tail-end flopping and unstable registration; worn gripper pads leave marks on the paper.
II. Common Q&A:
Q1: What is the most common cause of gripper bar maintenance issues?
A: Primarily, fatigue of the gripper springs leading to reduced bite force, as well as worn gripper pads or contamination with ink.
Q2: What should be noted when handling this on a Komori press?
A: It is necessary to work in conjunction with the PQC Print Quality Control system / KMS console, following standard operating procedures.
Q3: How can recurring problems be avoided?
A: Regularly calibrate the gripper bite force.
III. Handling Procedure:
Use a tension gauge to calibrate each gripper to a consistent bite force.
Replace worn gripper pads and clean them.
Grind or replace the gripper opening/closing cams.
Check the straightness of the gripper shaft.
The above methods are also applicable to models such as the LS440, LS629, Lithrone, GL840, and G40. For actual operations, refer to the PQC Print Quality Control system / KMS console and on-site conditions. In complex situations, it is recommended to contact professional maintenance support through the printm.cn platform.
