A Constant Tension Control System Based on Motor Torque

Abstract

The invention discloses a constant tension control system based on motor torque, comprising a bottom box, the top of the bottom box is fixedly connected with a transmission box, and the left side of the top of the inner surface of the transmission box is rotatably connected with a coil reel. The rear end of the central axis of the roll material reel runs through the transmission box and extends to the back of the transmission box. The present invention relates to the technical field of laser marking equipment. The constant tension control system based on motor torque measures and calculates the remaining radius of the coil material on the coil material drum by setting the encoder, and uses this data to control the rotation speed of the servo motor, so that the coil material is pulled out during the whole process of printing , the tension of the coil can be kept constant, which can avoid the problem of tearing the coil, and the two rubber rollers can be synchronized through the cooperation of the first driven pulley, the second driven pulley and the second belt Turning can avoid the problem that the traction torque will change exponentially, save the trouble of later adjustment, and can also give an alarm in time to remind the coil material to be replaced.

Description

technical field [0001] The invention relates to the technical field of laser marking equipment, in particular to a constant tension control system based on motor torque. Background technique [0002] Laser marking technology is one of the largest application fields of laser processing. Laser marking is a method of partially irradiating the workpiece with a high-energy-density laser to vaporize the surface material or undergo a chemical reaction of color change, thereby leaving a permanent mark. A marking method. Laser marking can print various characters, symbols and patterns, etc., and the character size can range from millimeters to microns, which has special significance for product anti-counterfeiting. Laser marking is characterized by non-contact processing, which can be marked on any special-shaped surface without deformation and internal stress on the workpiece. It is suitable for marking metal, plastic, glass, ceramics, wood, leather and other materials. Lasers can...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a constant tension control system based on motor torque, which solves the problem that when the coil material changes from large to small due to the constant feeding resistance of the driven wheel in the process of using the driving wheel to feed. , the traction torque will change exponentially, resulting in the need to manually adjust the reverse torque of the driven wheel after a period of time; the driving wheel and the driven wheel are always used to rotate and feed at the same angular velocity, so that the linear speed will be the same during the change of the diameter of the coil. Changes occur, resulting in the problem of tension and breakage of famous brand paper

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