Device for coating an object with a silicone coating

1 . A device ( 1 ) for coating an object ( 2 ) with a silicone coating ( 3 ), comprising at least one processing station ( 4 ) with a processing region ( 5 ) for accommodating the object ( 2 ), at least one silicone spray nozzle ( 6 ) for applying silicone ( 9 ) to at least one surface region ( 7 ) of the object ( 2 ) such that a silicone coating ( 3 ) results, at least one optical sensor ( 8 ) for monitoring a quality of the silicone coating ( 3 ) by identifying silicone ( 9 ), the at least one optical sensor ( 8 ) having an identification region ( 10 ), in which the at least one optical sensor ( 8 ) can identify silicone ( 9 ) and which is aligned with the processing region ( 5 ), and at least one compressed air nozzle ( 11 ) directed at the identification region ( 10 ) of the at least one optical sensor ( 8 ) in order to flush the identification region ( 10 ) with compressed air.

2 . The device ( 1 ) as claimed in claim 1 , wherein the silicone spray nozzle ( 6 ) is arranged on a base ( 12 ) of the processing station ( 4 ) and directed upward such that silicone ( 9 ) is able to be sprayed into the processing region ( 5 ) from below by the silicone spray nozzle ( 6 ), the processing station ( 4 ) having guide means ( 15 ) for relative movement between the processing station ( 4 ) and the object ( 2 ) which are configured such that the silicone spray nozzle ( 6 ) is introducible into a cylindrical body ( 13 ) of the object ( 2 ) through an open end ( 14 ) in order to coat an inner surface ( 16 ) of the object ( 2 ) with silicone ( 9 ).

3 . The device ( 1 ) as claimed in claim 1 , wherein guide means ( 15 ) for introducing the object ( 2 ) into the processing station ( 4 ) are configured to bring about a guided movement ( 17 ) of the object ( 2 ) through the processing region ( 5 ), during which a distance ( 18 ) of the object ( 2 ) from a base ( 12 ) of the processing station ( 4 ) is changed continually during a process of spraying silicone ( 9 ) using the silicone spray nozzle ( 6 ) in order to bring about a uniform application of the silicone coating ( 3 ) on the at least one surface region ( 7 ) of the object ( 2 ).

4 . The device ( 1 ) as claimed in claim 1 , wherein the at least one optical sensor ( 8 ) is arranged above a base ( 12 ) of the processing station ( 4 ) to a side of the processing region ( 5 ), and the identification region ( 10 ) is aligned at least partly horizontally for identifying silicone ( 9 ) in the processing region ( 5 ).

5 . The device ( 1 ) as claimed in claim 4 , wherein the at least one optical sensor ( 8 ) has a two-part form with a sensor transmitter ( 19 ) and a sensor receiver ( 20 ), the processing region ( 5 ) being arranged between the sensor transmitter ( 19 ) and the sensor receiver ( 20 ) and the identification region ( 10 ) having a linear form from the sensor transmitter ( 19 ) to the sensor receiver ( 20 ) and extending through the processing region ( 5 ).

6 . The device ( 1 ) as claimed in claim 1 , wherein the at least one optical sensor ( 8 ) is configured to identify light at a wavelength in a range between 400 nanometers and 800 nanometers.

7 . The device ( 1 ) as claimed in claim 1 , wherein the at least one optical sensor ( 8 ) is configured to identify water components in silicone ( 9 ).

8 . The device ( 1 ) as claimed in claim 1 , wherein the at least one compressed air nozzle ( 11 ) is arranged above a base ( 12 ) of the processing station ( 4 ) to a side of the processing region ( 5 ) and directed at the identification region ( 10 ) of the at least one optical sensor ( 8 ).

9 . The device ( 1 ) as claimed in claim 1 , wherein at least one compressed air nozzle ( 11 ) is directed at at least one sensor component ( 21 ) of the at least one optical sensor ( 8 ).

10 . The device ( 1 ) as claimed in claim 1 , wherein at least two opposing sensor components ( 21 ) are arranged above a base ( 12 ) of the processing station ( 4 ) to a side of the processing region ( 5 ), the processing region ( 5 ) being arranged between the sensor components ( 21 ), and the device ( 1 ) having at least two compressed air nozzles ( 11 ), with a respective compressed air nozzle ( 11 ) being fastened to a mount ( 22 ) of one of the sensor components ( 21 ) and being directed at another one of the sensor components ( 21 ).

11 . A method including the following steps:

a) providing the device ( 1 ) as claimed in claim 1 ;

b) cleaning the at least one optical sensor ( 8 ) using compressed air from the at least one compressed air nozzle ( 11 );

c) introducing an object ( 2 ) into the processing region ( 5 );

d) cleaning the object ( 2 ) using compressed air from the at least one compressed air nozzle ( 11 );

e) applying the silicone coating ( 3 ) to at least one surface region ( 7 ) of the object ( 2 ), silicone ( 9 ) of the silicone coating ( 3 ) being provided by the at least one silicone spray nozzle ( 6 ); and

f) monitoring a quality of the silicone coating ( 3 ) using the at least one optical sensor ( 8 ) by identifying silicone ( 9 ) during and/or after step e).

12 . The method as claimed in claim 11 , wherein water on the optical sensor ( 8 ) and on the object ( 2 ) is removed in step b) and step d) using the compressed air from the at least one compressed air nozzle ( 11 ) and wherein the at least one optical sensor ( 8 ) identifies water components in the silicone ( 9 ) in step f).