Device to prevent the drying of nozzles of a machine for the preparation of fluid coloring products
AssigneeCorob S.P.A. Con Socio Unico
InventorMarcello Bettini
Life of this patent
Estimating the term…
Abstract
A device to prevent the drying of nozzles of a machine for the preparation of fluid coloring products having a delivery head includes an anti-drying member and an actuation mechanism to take the anti-drying member from an inactive position distant from the delivery head to an operating position in contact with the delivery head. The actuation mechanism includes an actuation lever oscillating with respect to a fixed support and a group of parallelogram levers commanded by the actuation lever and connected to the anti-drying member so as to keep an upper surface of the anti-drying member constantly parallel to the lower surface of the delivery head during the movement from the inactive position to the operating position.
Claims20
A device to prevent the drying of nozzles of a machine for the preparation of fluid coloring products having a delivery head provided with said nozzles, said device comprising an anti-drying member suitable to be selectively taken from an inactive position, in which the anti-drying member is distanced from said delivery head, to an operating position, in which the anti-drying member is in contact with a lower surface of said delivery head, and an actuation mechanism suitable to effect the movement of said anti-drying member from said inactive position to said operating position, wherein said anti-drying member comprises a cup or glass element inside which there is a liquid or an element impregnated with a liquid, and wherein said actuation mechanism comprises an actuation lever oscillating with respect to a fixed support and a group of parallelogram levers commanded by said actuation lever and connected to said anti-drying member so as to keep an upper surface of said anti-drying member constantly parallel to said lower surface of said delivery head during the movement from said inactive position to said operating position;
- wherein when said delivery head is operating, the anti-drying member is maintained in the inactive position with the cup or glass element distanced from the delivery head, and wherein when the delivery head has terminated a delivery step, the anti-drying member is actuated to position the upper surface of said anti-drying member in contact with the lower surface of said delivery head;
- wherein the device further comprises thrust means interposed between said actuation lever and said group of parallelogram levers to apply a predetermined force to said anti-drying member when said anti-drying member is in said operating position, in order to guarantee an airtight seal between said anti-drying member and said delivery head;
- and
- wherein said thrust means comprise at least one thrust lever pivoted on said actuation lever and kept constantly in contact with at least one first lever of said group of parallelogram levers, and an elastic element which connects said at least one thrust lever to said actuation lever.
A device to prevent the drying of nozzles of a machine for the preparation of fluid coloring products having a delivery head provided with said nozzles, said device comprising an anti-drying member suitable to be selectively taken from an inactive position, in which the anti-drying member is distanced from said delivery head, to an operating position, in which the anti-drying member is in contact with a lower surface of said delivery head, and an actuation mechanism suitable to effect the movement of said anti-drying member from said inactive position to said operating position, wherein said anti-drying member comprises a cup or glass element inside which there is a liquid or an element impregnated with a liquid, wherein said actuation mechanism comprises an actuation lever oscillating with respect to a fixed support and a group of parallelogram levers commanded by said actuation lever and connected to said anti-drying member so as to keep an upper surface of said anti-drying member constantly parallel to said lower surface of said delivery head during the movement from said inactive position to said operating position, and wherein at least one thrust lever is pivoted on said actuation lever and is connected thereto via an elastic element such that the at least one thrust lever is kept constantly in contact with at least one first lever of said group of parallelogram levers so as to apply a predetermined force to said anti-drying member when said anti-drying member is in said operating position in order to guarantee an airtight seal between said anti-drying member and said delivery head.
Dependencies are inferred from the claim text.