The sharpening of a paper cutter
When the paper cutter appears the following situation must change the blade sharpening.
1) The cut has uneven knife marks, that is, there are small gaps at the blade, which are caused by more reasons, in addition to the reasons of the knife itself, it may be because a certain amount of paper is cut or the paper contains impurities.
2) Blunt knife, when the surface layer of the cut appears to pull out or up and down the knife is typical. Because the sharp blade is constantly cutting so that the blade is worn to form a round head, when the cutting knife cuts down, the blade can not cut the paper in time, the cutting knife with pressure and momentum to break through the paper to complete the cutting, the deformation of the upper part of the paper and then restore the deformation of the paper is definitely greater than the paper below the paper, which is what we usually call the "upper and lower knife", seriously affecting the cutting quality. Resulting in inaccurate size, specifications, etc.
3) The cutting quality is poor or the sound is abnormal. In daily work, cutting to master the cutting amount, to frequently change the tool, such as cutting continuous, cutting incision is not smooth, paper hair after cutting adhesion, cutting the shape of the paper is different, and the cutting sound has significant changes, should be replaced and sharpening in time, otherwise not only affect the quality of paper cutting, but also may affect the accuracy and life of the machine.
The sharpening points of the paper cutter
1) The horizontal adjustment of the end sharpening machine, because to ensure the quality of cutting paper, the cutting edge of the paper cutter needs a certain degree of straightness, so the initial installation of the end sharpening machine must adjust the horizontal position, and check regularly, and find that the difference should be corrected in time. At the same time, the position of the sharpening machine and the ground should also be relatively fixed to prevent the shift during the sharpening process, affecting the sharpening accuracy.
2) Coolant, coolant is used to reduce the cutting edge temperature during grinding, to avoid excessive cutting edge temperature resulting in surface heat treatment. Before sharpening the paper cutter each time, pay attention to whether the coolant is sufficient, and check whether the coolant contains precipitated steel chips, and clean up in advance.
3) Other factors, like the grinding wheel is also important, choose the wheel with the proper hardness grade, size, and etc for various cutter material, which can be more efficiency and influence the grinding quality.
More details, please contact Shungji knife.
