Dip coating system comprising a device for rotating the article to be treated

1. A dip coating system comprising:

a) at least one dip coating tank which can be filled with a treatment fluid into which the articles to be coated can be dipped;

b) a conveyor system, which can displace the articles to be treated to the at least one dip coating tank, into the interior of the at least one dip coating tank, out of the at least one dip coating tank and away therefrom and comprises:

ba) at least one trolley which has a fastening device which can be rotated around an axis of rotation, to which at least one article can be fastened;

bb) a rotating device with which the fastening device can be rotated in certain sections of the movement path of the at least one trolley;

bc) at least one driven traction chain extending parallel to the movement path of the at least one trolley;

wherein

c) the rotating device comprises

ca) at least one sprocket or gear wheel that can be connected to the fastening device in a rotation-locking manner which is arranged coaxial to the axis of rotation of the fastening device;

cb) at least one rotation chain or rotation gear rack which extends parallel to the movement direction of the at least one trolley with which the sprocket or gear wheel cams, and

further wherein the at least one rotation chain or the rotation gear rack extends in the movement direction of the at least one trolley over a section, in which a rotation movement should take place and in that an adjustable coupling is provided, which in a first rotation direction does not establish a rotation connection between the at least one sprocket or gear wheel and fastening device in a first position and establishes a rotation connection between the at least one sprocket or gear wheel and fastening device in a second position and

the adjustable coupling has a third position, in which a rotation connection is established between the at least one sprocket or gear wheel and the fastening device in a second rotation direction opposed to the first rotation direction.

2. The dip coating system according to claim 1 , wherein the adjustable coupling is actuatable via a coupling rod which cooperates with at least one guide mechanism, which is arranged in a stationary manner at a section of the movement path of the at least one trolley, in which a rotation should take place.

3. The dip coating system according to claim 2 , wherein the at least one guide mechanism can be displaced from a position, in which it cooperates with the coupling rod, into a position, in which the at least one guide mechanism does not cooperate with the coupling rod.

4. The dip coating system according to claim 2 , wherein the coupling rod can be displaced from a position, in which it cooperates with the at least one guide mechanism, into a position, in which the coupling rod does not cooperate with the at least one guide mechanism.

5. The dip coating system according to claim 1 , wherein the at least one rotation chain or the rotation gear rack is provided only in such sections of the movement path of the at least one trolley, at which a rotation should take place.

6. The dip coating system according to claim 1 , wherein the at least one rotation chain is displaceable in the longitudinal direction.

7. The dip coating system according to claim 1 , wherein the at least one rotation chain or rotation gear rack is not displaceable in the longitudinal direction.