Application of TS Series AC Servo System in Tobacco Logistics Automated Distribution Equipment - Applications - Stepper Motor AGV Motor Servo Motor Servo Hub Motor Hollysys Motor

The servo motor's function in the entire tobacco logistics line is to accurately place cigarette packs onto the conveyor belt, which then transports them for labeling and boxing. Due to the high conveyor belt speed, the system requires precise spacing between cigarette packs from each lane after placement, demanding an extremely responsive servo motor.

China's tobacco production and sales are uniformly managed and controlled by the state. Tobacco sales at prefecture-level cities and below operate through a demand-driven model where requirements are submitted first, followed by unified distribution by prefecture-level tobacco monopolies. Currently, imported tobacco logistics automated distribution equipment is expensive and delivers suboptimal operational performance. Customers have successfully implemented a 120-channel cigarette conveyor line using 'SenChuang' AC servo products provided by Beijing Hollysys Motor Technology Co., Ltd. After collaborative efforts, this solution met all operational requirements with excellent performance. Subsequently, three additional lines were deployed, receiving highly positive market feedback. Below is an introduction to the application of 'SenChuang' servos in this system.

On the logistics line, 'SenChuang' servos accurately place cigarettes onto conveyor belts for subsequent labeling and boxing. Due to high conveyor belt speeds, the system requires precise spacing between cigarette packs from different channels, demanding extremely fast servo response times.

Typically, a distribution line consists of multiple cigarette channels to handle various types and quantities. A single cigarette channel structure is shown in the figure below:

The servo application is relatively straightforward. The internal velocity mode is selected, controlled by an upper-level PLC. Motor stoppage is triggered when a photoelectric sensor detects push plate 2 reaching its position, prompting the PLC to issue a stop command. This ensures the drive chain rotates exactly half a turn, pushing a complete cigarette pack onto the conveyor belt via push plate 1, while the next pack drops into position for the next PLC command. While the motion process is simple, several critical factors require attention: 1) Setting optimal operating speed - excessive speed damages cigarettes and causes rebound issues, while insufficient speed disrupts production rhythm; 2) Acceleration/deceleration timing - acceleration affects initial velocity, while deceleration determines starting position; 3) Servo gain parameters, which significantly impact performance and require load-based adjustments. Parameter tuning typically follows this sequence: establish speed first, adjust gain, set deceleration for position accuracy, and finally optimize acceleration. Although proper tuning ensures stable operation, variable cigarette types (causing load fluctuations), power supply variations, and mechanical differences may cause jams. While complete elimination of jams is challenging, emergency measures minimize production impact. During jams, servos require protection mechanisms with reset buttons. Most servos require power cycling for recovery after prolonged jams (which clients prohibit). 'SenChuang' servos, modified per client requirements, resolve this issue with adjustable operating time protection. If no stop signal is received within the set timeframe after a motion command, the drive initiates resettable protection. This addresses jams or sensor failures, providing clients with significant convenience and demonstrating 'SenChuang' servo's customization advantages.