Automatic dispensing system for liquid samples
View Patent ↗Automatic system for precisely dispensing small quantities of colorings with individual pumping for each receptacle (canisters). Each canister ( 6 ) has a stirring blade ( 2 ). Fastened to the bottom ( 6 ) is a corrugated tube ( 41 ), the inlet channel for the pump ( 50 ). A spider connects the shafts of the blade ( 2 ) and is driven in rotation by a direct-current motor ( 43 ). Several pumps ( 50 ) connect to hoses ( 42 ) leading to the dispensing nozzles ( 8 ). Each nozzle ( 8 ) has staggered holes for the interference fitting of the dispensing hoses ( 42 ). A semi-circular movement mechanism comprises four arms ( 12 and 13 ) that articulate side supports ( 9 and 11 ) and move a receptacle support ( 44 ). An electronic circuit board ( 51 ) has a customizable resolution for each pump, precisely adjusting the dispensed fluid. An electronic processing and communication device provides the human-machine interface.
1 . An automatic dispensing system for liquid samples comprising:
at least one independently-driven hydraulic circuit, with various a plurality of canister reservoirs ( 6 ) with a lid ( 1 ) and pumps ( 50 ) which transfer paint to end reservoirs, wherein each of the canister reservoirs ( 6 ) has a pump ( 50 ), a tube ( 41 ) and a dispensing hose ( 42 ) which connects to the holes of a nozzle ( 8 ), under which there is positioned a paint reservoir and, in a front part of fairing, electric buttons are positioned to turn on and turn off and, also, an emergency button, an integrated electronic processing and communication device that receives electric power coming from a source and an electronic board ( 51 ) which manages a mechanism of a cup ( 47 ) and motors of each pump ( 50 ), precisely adjusting the quantity of fluid dosed and having a software residing in the board ( 51 ) which sends commands to the pumps ( 50 ), characterized in that the pumps ( 50 ) of each of the canister reservoirs ( 6 ) are of a progressive cavity type pump ( 50 ) and the tubes ( 41 ) are corrugated;
the nozzle ( 8 ) having a mechanism prescribing a semicircular movement comprising a cup support ( 44 ), on which there are connected two straight joints of rear arms ( 12 ) and two straight joints of front rear arms ( 13 ), two right ( 11 ) and left ( 9 ) supports and a support cup ( 47 ), into which the canister ( 6 ) is fitted, comprising a sponge and a sealing ring ( 48 ) and a sponge cup ( 49 );
a mechanism for eccentrically stirring the canisters ( 6 ) comprising a plate with various cutouts ( 14 ), the movement of which is driven by a continuous current stirring motor ( 43 ) with a pawl ( 18 ) on its shaft that tangentially pushes a pin ( 15 ) making it rotate;
the center of the bottom face of the canisters ( 6 ) having a hole with a thread where an inner tube ( 5 ) is vertically mounted having the same height as the canister ( 6 ) where a metal rod ( 7 ) is loosely mounted with a thread at the top end which is fastened onto a stirring blade ( 2 );
the electronic board ( 51 ) manages closing sensors of the cup mechanism ( 47 ) and provides input for the sensors;
the software residing in the board ( 51 ) controls a man-machine interface (S 1 ), a frontend (S 2 ), a backend (S 3 ), a calibration method (S 4 ) of dispensing data and a communication means (S 6 ) for sending to the control board ( 51 ).
2 . The system of claim 1 , wherein the software performs the calibration (S 4 ) by interpolating the dispensing data selected from pulse, speed, acceleration, time, reverse pulses, ideal mass, measured mass and deviation.
3 . The system of claim 1 , wherein the communication (S 6 ) of the backend (S 3 ) with the control board ( 51 ) uses point-to-point topology.
4 . The system of claim 3 , wherein the communication (S 6 ) of the backend (S 3 ) with the control board ( 51 ) uses modbus RTU protocol.
5 . The system of claim 1 , further comprising a tablet that has a connection with the control boards ( 51 ) through wireless protocols, such as bluetooth and wi-fi.
6 . The system of claim 1 , wherein the electronic processing and communication device has a connection with the control boards ( 51 ) through USB cables.
7 . The system of claim 6 , wherein the electronic processing and communication device can be a tablet, a notebook or a mini PC.
8 . The system of claim 1 , wherein the control board ( 51 ) can carry out individual or simultaneous dispensing in more than one pump, pursuant to the dispatch of data from the backend—S 3 .
9 . The system of claim 1 , wherein the control board ( 51 ) utilizes specific drivers (H 17 ) for controlling the movement of the pump motors.
10 . The system of claim 1 , further comprising an electronic device for determining the time it controls the stirring, receives the alternating current (H 5 ), counts the time between the stirring drives, drives the motor (H 7 ) using a relay, a continuous current 24V cable connects the source and a common input relay (COM), a stirring motor cable being connected to a normally closed (NC) of the relay when the time stipulated by the device has passed and drives the relay powering the stirring motor for the programmed time and returns to a normal position.
11 . The system of claim 1 , wherein the stirring motor (H 11 ) is used to move a mechanism that stirs the dyes, having two drive cables, one of the cables is connected directly to the negative of the source, the second cable is connected to a normally closed pin of an electronic device relay for determining the stirring time.
12 . The system of claim 1 , wherein an electronic device for determining the time is a timer.