Marking device

The invention discloses a marking device, comprising a marking head, a marking wheel unit disposed under the marking head, and aY-axis moving device disposed between the marking head and the marking wheel unit. The Y-axis moving device enables the marking wheel unit to move along the Y-axis direction of a conveyed glass panel relative to the marking head. Therefore, when marking wheels of the marking wheel unit need to be aligned along the Y-axis, the alignment can be realized through movement of the marking wheel unit relative to the marking head, and thus power consumption is reduced, deformation of equipment caused by weight can be minimized, the precision of a marking procedure can be guaranteed and yield can be improved.