The utility model relates to a kind of pen changing device for
visual identification line drawing
machine, including pen group mounting frame, drawing
brush selection component, inner pen holder component, outer pen holder component and weld drawing
brush;The inner pen holder component has several inner array drawing brushes, outer pen holder component has several outer array drawing brushes, with a line drawing position on pen group mounting frame, the rotation of inner pen holder component or outer pen holder component is realized different inner array drawing
brush or outer array drawing brush switching to line drawing position, and when in line drawing position, weld drawing brush, inner array drawing brush and outer array drawing brush are sequentially distributed, and the cooperation of drawing brush selection component realizes the capture and synchronous action of inner array drawing brush and outer array drawing brush in line drawing position.The pen changing component in the utility model, by the cooperation between drawing brush selection component, inner pen holder component, outer pen holder component and weld drawing brush, the line drawing of three drawing brushes can be realized simultaneously, a plurality of color lines can be sprayed by one action, greatly improve work efficiency.