High-speed tufting machine_the principle and application of toothbrush tufting machine

Currently, the electric control system structure of toothbrush tufting on the market is mainly divided into single-chip control system or CNC numerical control system. Among them, the control system of the single-chip microcomputer is mainly based on the integrated supporting services of the automation system manufacturer, and the independent research and development of the toothbrush equipment manufacturer is supplemented. Most of the CNC numerical control systems with better performance are imported brands such as Delta's PUTNC-H2P and Europe and Japan. CNC numerical control is important to control the axis pulse command signal to achieve servo drive, usually four-axis control output. Delta's CNC can be realized with only two-axis output. The other two axes of Zhongda's servo can be completed by DuLi. The toothbrush tufting machine requires the system to be able to It is enough to realize the two-axis interpolation operation. The four sets of servo drive models are Zhongda's B series ASDA-B AC servo system, with a power of 400W and a variety of function controls for driving. The spindle motor inverter model is Zhongda's VFD-S, with a power of 400W. Toothbrush tufting machinery debugging points: The difficulty of the solution development is the joint debugging of the electromechanical system, and the important thing is the adjustment of the servo gain. Among the four servo axes, X-axis and Y-axis are relatively stable due to the relatively stable mechanical inertia of the screw drive structure, and debugging is relatively easy, and the bandwidth can generally be adjusted to more than 130HZ. The Z-axis of the flap is a rotating axis, and high-speed rotation has centrifugal force. If the bandwidth is simply set high, the motor will vibrate when it starts and stops. At this time, the position smoothing filter parameter can be turned on to clear the vibration. Relatively speaking, the mechanical structure of the cam mechanism of the U-axis for hair removal makes debugging and comparison difficult. In addition, the mechanical rigidity of the U-axis is not good. When the motor is running, the inertia ratio changes greatly, and the motor output current changes greatly, so the parameters cannot be adjusted. Well, when the motor is running from side to side, the shaft will either vibrate or squeal, or it will be sluggish. For this, it is necessary to apply the resonance suppression function of the B series ASDA-B AC servo system. It is the principle of resonance suppression for system gain with resonance. When the low-pass filter starts to increase from 0, the B.W. will become smaller and smaller. Although the resonance problem is solved, the system response bandwidth and phase boundary are also reduced, and the system will become more unstable. If the resonance frequency can be known, the band rejection filter can directly eliminate the resonance. It is usually known how much resonance suppression is, and the effect of using a band rejection filter is better than a low-pass filter. However, if the resonance frequency will drift with time or other factors, and the drift is too far, then it is not suitable to use a band rejection filter . The problem caused by the operation of the U-axis of the equipment under the name is that the resonance point is floating. The effect of using the P2-25 low-pass filter is better. The parameter is set to be large. In addition, the position accuracy requirement of this axis is not too high, so the problem is solved .