The cutting accuracy of the paper cutter is an important factor to measure the quality of a paper cutter. A high-precision paper cutter is a high-quality paper cutter.
To make the edge of the cut paper smooth, it is necessary to ensure that the blade of the cutter is sharp and the angle of sharpening is appropriate. When cutting soft paper, the blade sharpening angle should be 16 °; when cutting cardboard and kraft paper, the blade sharpening angle should be 20 °; when cutting common printing paper, the blade The sharpening angle is preferably 21 °.
The cutting accuracy of the paper cutter is very important for the quality of paper products. According to some existing production conditions, the quality of the product has a great relationship with the operation mode of the paper cutter and whether the equipment is adjusted properly. It is very necessary.
In normal production, it is not difficult to find that the cutting accuracy of paper products is one of the defects caused by the daily quality performance of products. After performing observation and research, it was found that in addition to the improper operation of the paper cutter, there is another reason that the debugging has not been done well. This is mainly because the precision adjustment of the equipment is very patient and meticulous. Only when the calibration is in place can we produce better and more accurate paper products.
How to make the cutter of the paper cutter more durable?
First, pay attention to whether the paper cutter has the deviation of the sliding knife, and whether the cutting accuracy reaches the required standard.
Second, we must pay attention to the safety index of the paper cutter, and what protective measures are available to make the operator safer.
Third, the choice of the angle of the cutting edge of the paper cutter is also very important. The cutting quality and effect are reflected in the cutting blade and sharpening process.
Fourth, it is recommended to buy products that use motor components with mechanical brakes, which can avoid the dangerous situation of "sliding knife".
Fifth, the stability of the operation of each part of the paper cutter, the reliability of the overall quality and performance.
Sixth, the sensitivity and flexibility of each button of the operating platform of the paper cutter, and the size of the noise.
The choice of the blade sharpening angle, the quality of the sharpening, and the blade sharpening gap time affect the flatness and smoothness of the cutting edge of the paper. The general blade angle is 19 °. If the cut paper is hard, you need to To increase the angle of the blade, if you want to improve the quality of the blade, you must ensure that the coolant is sufficient to avoid the edge annealing. Before cutting, you can polish the blade with oilstone and apply soap and paraffin on the blade. , This can not only improve the sharpness and smoothness of the cutting edge, but also extend the service life of the cutting edge, and the quality of the finished product is better.
The reason why the chip collapse occurs in actual operation is because the operator shortens the sharpening time and the coolant is insufficient, causing the edge of the blade to anneal and narrow the width. The nut must be adjusted during installation to make the blade cut into the pad If the blade is not adjusted well and the cutting depth is too deep, it will cause chipping.
When the hydraulic paper cutter is cutting, sometimes there is no phenomenon when the secondary pressure of the paper press appears, which is very easy to cause the scrap to be scrapped due to size deviation, resulting in great waste. So, what is the reason for this problem? How to solve it?
There are two main reasons for this problem. The first reason is due to the improper adjustment of the pressure relay of the hydraulic system, and it has been activated when the foot pressure test; the second reason is because of a relay Due to the poor K5 contact, the K5 relay controls a solenoid valve coil, and this solenoid valve is controlled by the high-pressure hydraulic oil into the cylinder of the paper press, so that the paper press operates.
By replacing K5, and adjusting the pressure relay to the secondary pressure of the paper presser, it only acts when the pressure relay is not operated when the foot pressure test is pressed. Finally, the top screw is locked after the adjustment is completed, and then try again. You will find that the fault still disappears.