Patent ID: 9630362
Date: 2017-04-25
CPC Classifications: B29C,B29L,B33Y

Claim:
1. A printing head module, adapted to dispense a first modeling material and a second modeling material layer by layer on a base to form a three-dimensional (3-D) object, the printing head module comprising: a driving gear; a first unidirectional gear, engaged with a first side of the driving gear; a first idler gear, engaged with the first unidirectional gear; a second unidirectional gear, engaged with a second side of the driving gear opposite to the first side; a second idler gear, engaged with the second unidirectional gear; and a bi-directional motor, connected to the driving gear to selectively drive the driving gear to rotate along a first direction and a second direction to drive the first unidirectional gear and the second unidirectional gear to rotate simultaneously, wherein when the driving gear is driven to rotate along the first direction, only the second unidirectional gear drives the second idler gear to rotate to feed the second modeling material, when the driving gear is driven to rotate along the second direction, only the first idler gear is driven to rotate to feed the first modeling material.