Nozzle for a three dimensional printing apparatus
A nozzle for a three-dimensional printing apparatus, comprising a main nozzle body ( 2 ) having an inlet end ( 4 ), an outlet end ( 6 ) and a central conduit ( 8 ) arranged there between, wherein the main nozzle body ( 2 ) is made of an electrically non-conductive body material. The main nozzle body ( 2 ) is provided with an electrically conductive first layer ( 10 ) and/or an electrically non-conductive second layer ( 12 ) arranged around the main nozzle body ( 2 ).
1. A nozzle for a three-dimensional printing apparatus, comprising a main nozzle body having an inlet end, an outlet end and a central conduit arranged there between, wherein the main nozzle body is made of an electrically non-conductive body material, and wherein
the main nozzle body is provided with an electrically conductive first layer configured for induction heating of the main nozzle body and an electrically non-conductive second layer arranged around the main nozzle body, and wherein the electrically non-conductive body material comprises a first glass material, a first ceramic material, a first mineral material, or a combination thereof, and
wherein the electrically conductive first layer and the electrically non-conductive second layer are arranged in non-overlapping side by side fashion in a longitudinal direction of the nozzle, wherein the nozzle further comprises a coil element arranged around the main nozzle body in order to heat the electrically conductive first layer during operation of the nozzle.
2. The nozzle according to claim 1 , wherein the electrically non-conductive body material is at least in part optically transparent and/or at least in part RF transparent.
3. The nozzle according to claim 1 , wherein the electrically conductive first layer comprises a metal or graphite material, or a combination thereof.
4. The nozzle according to claim 1 , wherein the electrically non-conductive second layer comprises a second glass, a second ceramic, a second mineral material, or any combination thereof.
5. The nozzle according to claim 1 , wherein a first sensor actuator element is arranged on an outer surface of the main nozzle body, on an inner surface of the central conduit, or within the electrically non-conductive body material of the main nozzle body.
6. The nozzle according to claim 5 , wherein the first sensor actuator element is a light sensor and/or a light source and/or a thermal sensor.
7. The nozzle according to claim 1 , wherein the nozzle further comprises a second sensor actuator element arranged between the main nozzle body and the electrically conductive first layer and/or the electrically non-conductive second layer.
8. The nozzle according to claim 7 , wherein the second sensor actuator element is a thermal sensor.
9. The nozzle according to claim 1 , wherein the nozzle further comprises a pathway extending through the main nozzle body between the central conduit and an outer surface of the main nozzle body.
10. The nozzle according to claim 9 , wherein the pathway is a secondary conduit or an optical pathway.
11. The nozzle according to claim 1 , wherein the electrically conductive first layer and electrically non-conductive second layer are arranged at the same radial distance from the central conduit.