In recent years, there has been a major technical breakthrough in the field of transmission components, mainly reflected in the adoption of rolling friction balls instead of traditional mechanical friction transmission mode. Although the traditional mechanical friction is simple in structure and low in price, the friction coefficient is very large, which will cause the defects of large transmission resistance and low working efficiency.
In order to overcome the great obstacle of operation, the motor used to drive the screw rod and guide rod is designed with great power, which directly consumes more power and energy. Applying the rolling mode of ball to the screw rod and guide rod can greatly reduce the transmission resistance, save energy and improve the precision and efficiency of transmission. The representative product of this high-precision transmission technology is the ball screw, especially in the field of corrugated packaging machinery.
In the field of corrugated packaging machinery, a large number of high-precision ball screws are selected as the representative model of line pressing paper separator. The main function of this machine is to cut the formed corrugated cardboard into strips according to the specifications set by users. Because the cardboard will be printed in the later process, it is required to realize the function of depressing line on this machine.
According to its specifications, the line pressing paper machine can be divided into four knives and six lines, five knives and eight lines, six knives and ten lines, etc. The number of cutting knives is proportional to the configuration of the line pressing wheel, and it is not arbitrarily combined. The more the number of knives and wires, the more complicated the mechanical design. Because each slitting knife and thread pressing wheel should automatically adjust the axial position of different specifications input by users, each knife and thread pressing wheel is equipped with a set of axial moving systems (including screw drive and shaft guide sleeve, etc.).
In the previous design, the screw drive and shaft guide sleeve could only adopt mechanical sliding friction, which caused great resistance and low efficiency of the drive. In view of the application requirements of high-speed production line, the line pressing paper separator has been redesigned, and a large number of ball screws with low resistance and high precision are used in the new machine, so it can meet the replacement requirements of high-speed paperboard specifications.
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