FDM 3D打印机自动衔接送丝装置设计

Design of Automatic Connection and Wire Feeding Device for FDM 3D Printer

FDM 3D打印机用尽一卷耗材后,需要人工更换新的耗材,为了使3D打印机供料与换料系统自动化,达到新旧耗材自动精确衔接的目的,采用锥齿轮组控制同轴向上的正反旋转方向的机械传动方法,设计出了一种自动衔接送丝装置。通过传感器识别耗材用尽与否来改变编码电机的转动方向,实现新旧耗材衔接,并保持下位机与3D打印机实时通信,结合打印机的打印状态保证自动衔接送丝装置的运行动作与FDM 3D打印机的动作同步,辅助打印机执行打印任务。试验结果表明,设计的装置能够取代人工值守更换耗材,提高3D打印机的自动化程度,同时避免3D打印机因材料耗尽而影响到打印模型质量的问题,较大程度地提高了FDM 3D打印机的打印质量和打印效率,具有较好的市场应用价值。

After the FDM 3D printer runs out of one volume of consumables,it is necessary to manually replace the new consumables.In order to make the feeding and reloading system of the 3D printer automatic and achieve the goal of automatic and accurate connection between the new and old consumables,an automatic connecting wire feeding device is designed by using the mechanical transmission method of bevel gear group to control the positive and negative rotation direction in the same axis direction.The device can change the rotation direction of the coding motor by identifying whether the consumables are used up or not,realize the connection between the new and the old consumables,and keep the real-time communication between the lower computer and the 3D printer,combined with the printing state of the printer to ensure the operation of the automatic link wire feeder and the action of the FDM 3D printer synchronization,to assist the printer to perform the printing task.The experimental results show that the device can replace the manual duty to change consumables,improve the automation level of 3D printer,and avoid the problem that the 3D printer runs out of materials,which will affect the quality of the printing model,to improve the printing quality and efficiency of FDM 3D printer,it has a good market application value.