What are the time adjustment methods for offset presses?
The offset time relationship of the offset press is also called the maneuver relationship, which refers to the relative positional relationship between the moving parts. One working cycle is specified as 360°. On the offset press, there is a certain time relationship between the moving parts from the same power source.
Offset time adjustment methods are there?
1. Adjusting the movement time of the machine is mostly realized by changing the position of the control cam. The adjustment method is as follows: hand crank the machine to the specified degree, then release the control cam fixing screw, so that the control cam and the roller are in light contact. Fix the cam;
2. The time adjustment of some offset printing machine parts is realized by changing the circumferential position of the transmission gear. First, shake the machine to the specified position, then watch the time scale meet the requirements. If the requirements are not met, loosen the fixing screws on the gear ( To adjust the time), and then shake the machine (note that the adjusted parts cannot move) to the specified scale and tighten the screws.
3, roller grippers and gripper teeth intersection determination method, when the machine obsolescence, when the time machine and scale are not necessarily accurate and reliable, how to determine the cut-off point of it? We know that the cut-off point is the gripper teeth pad It is closest to the surface of the drum, so it can be tested by the feeler gauge to determine the cutting point. Generally, the offsetting machine sets the cutting point time to the zero point of the whole machine. Therefore, after finding the tangent point, the zero scale should be calibrated, and then the time table can be adjusted according to the specification. other parts of the time.
4. When the offset printing machine and the pre-regulation time relationship adjustment method, when the machine installation or the Feida repair causes the paper feeding device to be far away from the pre-measurement time, the following method can be used to quickly adjust the handover time relationship: first open Feed the paper and the air pump, then punctualize the machine to let Feida send the paper slowly.
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