Support table for inspecting and/or orienting an electronic component
A support table ( 1 ) for inspecting and/or orienting electronic components (B) prior to the assembling of a printed circuit board with these components, onto which support table the components, which are initially held at a nozzle end ( 7 ) by means of negative pressure, are set down following release by the nozzle end, wherein the table ( 1 ) has a transparent support plate ( 2 ), preferably a glass plate, and a delimiting edging ( 5, 6 p, 6 z, 12 ) preventing a displacement of a component (B) deposited temporarily on the support plate caused by air exiting the nozzle is provided, and an optical inspection device is arranged below the support table ( 6 u ) and an optical inspection device is arranged above the support table ( 6 o ).
1. A support table ( 1 ) for inspecting and/or orienting electronic components (B) prior to assembly of a printed circuit board with the electronic components, wherein the electronic components are initially held at a nozzle end ( 7 ) by negative pressure and are thereafter set down on the support table following release of the negative pressure and the exiting of air by the nozzle end, the support table ( 1 ) comprising:
a transparent support plate ( 2 );
an auxiliary plate ( 3 ) disposed on the transparent support plate, wherein the auxiliary plate comprises at least one recess ( 4 ) defining a delimiting edging ( 5 , 6 p , 6 z , 12 ) configured to surround the electronic components and prevent a displacement of the electronic components (B) deposited on the transparent support plate by the release of the negative pressure and the exiting of air by the nozzle end;
a lower optical inspection device ( 6 u ) arranged below the support table; and
an upper optical inspection device ( 6 o ) arranged above the support table.
2. The support table ( 1 ) of claim 1 , wherein the delimiting edging ( 5 ) is formed by one or more walls of the at least one recess.
3. The support table ( 1 ) of claim 1 , wherein the auxiliary plate ( 3 ) is transparent.
4. The support table ( 1 ) of claim 1 , wherein the delimiting edging ( 5 , 6 z , 12 ) is substantially circular cylindrical.
5. The support table ( 1 ) of claim 1 , wherein the delimiting edging ( 10 ) is polygonal.
6. The support table ( 1 ) of claim 2 , wherein the one or more walls ( 8 , 9 a . . . d , 10 ) are provided in the auxiliary plate around the at least one recess in order to form the delimiting edging.
7. The support table ( 1 ) of claim 1 , wherein a surface of the delimiting edging ( 5 , 6 z , 12 ) is inclined at an angle relative to normal of a support surface of the support table.
8. The support table ( 1 ) of claim 7 , wherein the angle of inclination lies between −30° and −1° or between +1° and +30°.
9. The support table ( 1 ) of claim 1 , wherein a surface of the delimiting edging ( 5 , 6 z , 12 ) is optically diffusely scattering or non-reflective.
10. The support table ( 1 ) of claim 1 , wherein a surface of the delimiting edging ( 5 , 6 z , 12 ) is roughened.
11. The support table ( 1 ) of claim 1 , wherein the lower optical inspection device and/or the upper optical inspection device comprises a camera.
12. The support table ( 1 ) of claim 1 , wherein the lower optical inspection device and/or the upper optical inspection device comprises a stereoscopic camera.
13. The support table ( 1 ) of claim 1 , wherein the lower optical inspection device and/or the upper optical inspection device comprises a camera operable in accordance with a time-of-flight method.
14. The support table ( 1 ) of claim 11 , wherein the upper optical inspection device is different from the lower optical inspection device.
15. The support table ( 1 ) of claim 1 , wherein the transparent support plate ( 2 ) comprises a glass plate.
16. The support table ( 1 ) of claim 5 , wherein the delimiting edging ( 10 ) is rectangular or square.
17. A support table ( 1 ) for inspecting and/or orienting electronic components (B) prior to assembly of a printed circuit board with the electronic components, wherein the electronic components are initially held at a nozzle end ( 7 ) by negative pressure and are thereafter placed on the support table following release of the negative pressure at the nozzle end, the support table ( 1 ) comprising:
a transparent support plate ( 2 ) disposed on support table ( 1 );
at least one indentation ( 11 ) m the transparent support plate, wherein the at least one indentation defines a delimiting edging ( 12 ) configured to surround the electronic components and prevent a displacement of the electronic components (B) deposited on the support plate by the release of the negative pressure at the nozzle end;
a lower optical inspection device ( 6 u ) arranged below the support table; and
an upper optical inspection device ( 6 o ) arranged above the support table.