基于PLC和机器视觉的药瓶包装系统设计

Design of Bottle Packaging System Based on PLC and Machine Vision

为提高药瓶灌装生产线药瓶包装单元的工作效率和精度,设计一种融合PLC和机器视觉的工业机器人药瓶包装控制系统。首先,应用以太网构建一个包含汇川PLC、迈科诚机器视觉系统、ABB六轴工业机器人的硬件系统。然后,通过机器视觉完成图像匹配、标定转换、网口通讯,获取药瓶包装标签信息;基于药瓶“装瓶-加盖-贴标”的包装流程进行机器人位置示教,确定运动轨迹。设计了机器人与PLC和机器视觉之间的通讯和控制程序,机器人与PLC点对点连接通信,并通过套接字(Socket)通信与视觉系统发送和接收数据。系统调试结果表明,机器视觉能准确检测标签信息并实时将数据反馈给机器人,在PLC控制下,机器人实现了对药瓶的包装过程控制,系统运行稳定,为实现智能化药瓶包装提供了一种可行方案。

In order to improve the efficiency and accuracy of the bottle packaging unit in the bottle filling production line, a robot of bottle packaging control system based on PLC and machine vision was designed. First, a hardware system including Huichuan PLC, machine vision and ABB six axis industrial robot was constructed by using Ethernet. Then, the information of the drug bottle packaging label was obtained through the machine vision processing flow such as image matching, calibration conversion and network port communication, and the robot teaching was completed based on the drug bottle packaging process of "bottling-capping-labeling" to determine the motion trajectory. The communication and control program between robot and PLC and machine vision was designed, the robot communicated with the PLC point-topoint, and sent and received data with the vision system through Socket communication. The system debugging results show that machine vision can accurately detect the label information and feed back the data to the robot in real time, under the control of PLC, the robot realizes the packaging process. The system runs stably, which provides a feasible scheme for realizing intelligent medicine bottle packaging.