Articulated robot arm and printing method using the same

1. An articulated robot arm capable of laser printing, the articulated robot arm comprising:

a communicator configured to receive beverage order information;

a grip part configured to grip and move a cup;

an articulation part having one side coupled to the grip part, the articulation part comprising a plurality of articulation units;

a controller configured to control operations of the grip part and the articulation part; and

a laser beam irradiation unit provided on at least a partial area of the grip part and configured to irradiate a laser beam to print the beverage order information on the cup,

wherein the laser beam irradiation unit comprises a distance measurement unit configured to measure a focal length of a laser beam, and

the controller is further configured to allow the focal length measured in real time by the distance measurement unit to be fixed while the laser beam irradiation unit irradiates a laser beam, wherein the focal length is a distance between the laser beam irradiation unit and a surface of a printing area.

2. The articulated robot arm of claim 1 , further comprising an image sensor unit configured to scan the cup and detect the printing area based on a reference gray scale value.

3. The articulated robot arm of claim 2 , wherein the controller is further configured to control at least one of the articulation part and the grip part to allow the laser beam irradiation unit to be positioned close to the printing area.

4. The articulated robot arm of claim 2 , wherein the image sensor unit is further configured to determine a material or printability of the cup based on an image of the cup, and

the laser beam irradiation unit is further configured to adjust an intensity of the laser beam based on the material of the cup.

5. The articulated robot arm of claim 2 , wherein the image sensor unit is further configured to determine whether an object or an entity is present in an irradiation area of the laser beam irradiation unit, and

the controller is configured to stop the laser irradiation of the laser beam irradiation unit when it is determined that the object or the entity is present in the irradiation area of the laser beam irradiation unit.

6. The articulated robot arm of claim 2 , wherein the image sensor unit further comprises an auxiliary recognition unit configured to recognize a check area of the cup, and

the laser beam irradiation unit prints on the check area recognized by the auxiliary recognition unit.

7. The articulated robot arm of claim 1 , further comprising a water supply unit configured to receive and discharge external water,

wherein the controller is further configured to control operations of the grip part and the articulation part to use a beverage making accessory device according to a making recipe based on the beverage order information received by the communicator.

8. The articulated robot arm of claim 1 , wherein the beverage order information includes at least one of an ordered beverage name, a beverage size, an order recipe, an orderer's name, and an orderer's request.

9. The articulated robot arm of claim 1 , wherein, when the grip part grips the cup and moves the cup to a placement spot, the laser beam irradiation unit prints the beverage order information.

10. The articulated robot arm of claim 1 , wherein, when a beverage is being made in a beverage making accessory device, the laser beam irradiation unit prints the beverage order information on the cup.

11. The articulated robot arm of claim 1 , wherein the laser beam irradiation unit further comprises an opening and closing part configured to perform an opening and closing operation to be inserted into the grip part during a non-operation.

12. A printing method using an articulated robot arm capable of laser printing, the printing method comprises:

a receiving operation of receiving beverage order information;

a gripping and moving operation of gripping and moving a cup by using a grip part and an articulation part;

a printing operation of printing the beverage order information on the cup using a laser; and

a printing area detection operation of scanning the cup and detecting a printing area based on a reference gray scale value.

13. The printing method of claim 12 , wherein, in the printing area detection operation, the articulated robot arm is positioned close to the printing area.

14. The printing method of claim 12 , wherein the printing operation comprises:

a distance measurement operation of measuring a focal length of a laser; and

a laser beam irradiation operation of allowing the focal length measured in real time by a distance measurement unit to be fixed while a laser beam is irradiated, wherein the focal length is a distance between the laser beam irradiation unit and a surface of the printing area.

15. The printing method of claim 12 , wherein the printing area detection operation comprises determining a material or printability of the cup based on an image of the cup through image sensing, and

the printing operation comprises adjusting an intensity of a laser beam based on the material of the cup.

16. The printing method of claim 12 , wherein the printing operation comprises determining whether an object or an entity is present in an irradiation area of a laser beam, and stopping a laser beam irradiation when it is determined that the object or the entity is present in the irradiation area of the laser beam.

17. The printing method of claim 12 , further comprising:

a recipe determination operation of determining a making recipe based on the received beverage order information; and

an accessory device determination operation of determining a beverage making accessory device to be used according to the making recipe, and determining an order of use of the beverage making accessory device.

18. The printing method of claim 12 , wherein the beverage order information includes at least one of an ordered beverage name, a beverage size, an order recipe, an orderer's name, and an orderer request.