For a printing press, a paper cutter is an essential machine used to cut paper before and after printing. The paper cutting machine is easy to operate and has no special requirements for the environment. As long as the power supply is supplied, it can work normally. After prolonged use, the paper cutting machine may encounter some problems, such as the paper cutting machine not moving, abnormal sound, and the paper feeder not moving. Some users have reported to us that new paper cutting knives, knives, and blades will all experience collapse issues.

Below, the author provides a brief analysis of the reasons for the breakage of the paper cutting blade of the paper cutting machine.

The selection of blade grinding angle, blade grinding quality, and blade grinding gap time affect the flatness and smoothness of paper edge cutting. The general blade angle is 19 °. If Paper Cuttings belongs to hard paper, the angle of blade must be increased. In order to improve the grinding quality of blade, sufficient coolant must be ensured during grinding to avoid edge annealing, and the blade must be grinded with an oilstone before cutting. Applying soap and paraffin on the blade not only improves the sharpness and smoothness of the blade, but also prolongs its service life and improves the quality of the finished cutting product.

The reason for the actual operation is that the operator shortened the grinding time and the coolant was insufficient, resulting in edge annealing. To reduce the width, the nut must be adjusted during installation to make the blade cut into the pad blade. If the nut is not adjusted properly and cut too deeply, it will cause the blade to collapse.