A.Cracteristics of spiral double knife paper cutter            1、 The difference between double rotation paper cutter (upper and lower knives are cut back at the same time) and web cutter (lower knives are fixed and upper knives are cut back):            1. For web cutter, the paper cutting mode is fixed at the lower end and cut back at the upper end. The paper is cut off. The breaking point is at the bottom of the paper. When cutting off, there will be paper wool, paper powder, beveled edge, the thicker the paper, the longer the beveled edge. At the same time, the paper will have flanging phenomenon.            2, This phenomenon has a serious impact on the printing of paper. Paper wool and paper powder will contaminate the printing board of the printing machine, reduce the service life of the printing board, and increase the printing cost. Therefore, most printing factories now leave a margin of about 5mm on one side to cut the flash on the cutting machine when cutting the paper on the web cutting machine, thus increasing manpower and waste. (we calculate that in one year, manpower and paper will be cut The waste is about 300000 yuan), and the double rotation paper cutter (upper and lower knives are cut back at the same time), the paper is cut, the break point is in the middle of the paper, there is no paper powder, paper wool, flanging and other phenomena, the paper is directly on the printer, clean paper will extend the life of the printing board of the printer, at the same time, it will reduce cutting equipment and cutting workers, reduce labor intensity and improve production efficiency.            3, During the paper cutting operation of the web cutter, the paper squareness shall be readjusted from the 1320mm length specification of the previous order to the 787mm length specification of the next order. The time of each adjustment shall be shut down for adjustment in a smooth state, about 15 minutes. If the length is changed more in a day, the time of delay is too much, and the double rotation paper cutter is not required regardless of the length of the paper The adjustment of squareness saves working time and improves efficiency.            4. During the paper cutting operation of the web cutter, 350-400g paper can be cut from the previous order, and the next order can be changed, 120-180g paper can be cut, and the knife needs to be adjusted again. The skilled operator of knife adjustment needs 20 minutes to an hour when the machine is stopped, while the double knife cutter can cut the paper smoothly from the previous order, 400g paper to 150g paper from the next order without knife adjustment.            The double rotation paper cutter starts from the details of production. It can save time and labor for workers, reduce downtime and loss for the company, ensure the smooth operation of production and improve production efficiency.            The traditional paper cutter is hydraulic type and program-controlled type, which is replaced by the web cutter due to the low output. The web cutter meets the needs of customers in a certain period of time. With the increase of high-grade printing machines and the improvement of customers' requirements for paper wool and paper powder, the double rotation paper cutter has been transferred from abroad to China. Chenming, Jiulong, Huatai and other large enterprises have always used the double rotation paper cutter because of the price It costs seven or eight million yuan for an expensive machine, more than 10 million yuan for Pasaban paper cutter in Spain, and nearly 3 million yuan for Chuanjia double rotation paper cutter in Taiwan, so we don't know a lot of customers. Our double rotation paper cutter adopts the same paper cutting method as foreign equipment, makes the equipment localization, and keeps the internationalization of electrical appliances, which just meets the advanced concept and leads the paper market The demand for high-end customers to provide in three to six years after still quite competitive paper cutter. Ensure that you produce or buy first-class quality paper, after cutting to sell to the price of first-class products.