Three-sided paper cutter in the printing industry

Generally, the common knives in paper mills have slitting knives, circular knives, guillotine knives, etc. In actual printing, a combination tool is commonly used, with three straight knives, also known as three-sided paper cutter knives and three-sided trimmer knives. With the continuous improvement of customers' requirements for the quality of printing, paper and printing enterprises have also put forward further requirements for the quality and quality of paper cutting knives.

Shungji three-sided paper cutter knife is generally inlaid with tungsten carbide material, this material is very wear-resistant, but the processing difficulty is high, its various performance indicators are more than 3 times better than high-speed alloy steel knives, the price is higher but the grinding cost is relatively low, so that its comprehensive cost is better than other materials. This kind of tool is made of two parts of the blade and the knife body by high-temperature insertion welding.

Choice of cutting edge Angle

The choice of cutting edge Angle is very important, the smaller the edge Angle α, the sharper the blade; The larger the edge Angle α, the blunter the blade. Generally, the following aspects should be considered for the cutting edge Angle

1). The cut paper, due to the hardness and thickness of the different, thin and soft paper or material cutting, cutting edge Angle should be selected smaller, such as 18-20 degree; When cutting thick and hard cardboard or materials, the cutting edge Angle should be larger, which can also protect the knife edge.

2). The stacking height of the cutting object. When it is higher, the cutting edge Angle should be larger, and in order to ensure the cutting accuracy, we can grind it into two different angles on the bevel of the same blade. This special edge Angle can be adapted to replace a variety of soft and hard material cuts or stacked higher cuts at any time.

3). The cutting speed of the paper cutter, if the cutting speed of the paper cutter is slower, the smaller edge Angle should be selected within the allowed range; If the cutting speed of the paper cutter is faster, a larger edge Angle should be selected.

Shungji standard three-sided paper cutter, like 500 model, 550 model, etc, also support custom-made knives. If further information, please contact us.