贴片机贴装印刷电路板中供料器的分配问题

Feeder Assignment Problem of Placement Machine Assembling Printed Circuit Board

供料器分配问题是贴片机贴装印刷电路板(PCB)中的一个关键问题,它直接影响贴片机生产效率的高低.针对该问题提出其优化模型,规定一种元器件只能装在一个供料器上,将各个取贴循环中的元器件集合看成一个整体,追求贴片头沿着供料槽从供料器上吸取元器件的移动时间最短.同时基于该模型给出了一种启发式的解决方法,首先将元器件分配组合成各个取贴循环的元器件集合,然后根据这些集合里元器件的贴装位置来分配供料器的位置,使贴片头同时取料的次数尽可能的多.在一台4头贴片机上的相关实验表明,该模型和方法能大幅度地降低生产时间.

Feeder assignment problem is one critical problem of placement machine assembling printed circuit board (PCB). It affects placement machine's product efficiency directly. An optimization model for it was provided, in which, it is constrained that one type of components is contained only by one feeder. In addition, set of components of each pickandplace cycle is regarded as a whole. The object of the model is the minimum moving time of placement heads picking components from feeders along feeder slots. A heuristic algorithm based on the model was presented. Components are divided and grouped into each set of components of each pickandplace cycle, then feeder positions are assigned to make picking simultaneously as much as possible according to the placement positions of these sets of components. Experiments were done on a four head placement machine, which show that they can reduce total assembly time greatly.