SU925410A2 - Automatic painting apparatus - Google Patents

Description

(54) AUTOMATIC PAINTING DEVICE

one

The invention relates to systems for automatic painting of products, is intended primarily for automating the painting process by spraying paints and varnishes, different in 5 colors and compositions, and is an improvement of the known device described in the ed. St. № 713594.

According to the main author. St. No. 713594, an automatic painting device 10 containing a sprayer, the cavity of which communicates with paint and solvent containers through pipes with pneumatically controlled shut-off valves, and a compressed air supply system in the tank 15 and is equipped with an air distributor with cavities, one of which communicates with containers for paints, and the second with a container for solvents, the pipe of the solvent supply water communicating with the pipe for supplying paint through the nozzle fl.

The disadvantage of this device is that the solvent during washing is discharged into the working space of the chamber and 25 then through ventilation to the atmosphere.

In cases where the paint is produced by one type of paint and varnish material, this disadvantage is not significant. When is the color bound 30

with frequent changes of colors and types of paint, it becomes essential, since the solvent for washing is most often required 3-4 times more than the volume of pipelines.

The purpose of the invention is to reduce solvent losses when flushing the device.

To achieve the goal automatic painting device for auth. St. No. 713594 according to the invention is provided with a container for collecting the spent solvent and a drain pipe with an additional shut-off valve connected to this container and the paint supply lines.

The drawing shows a diagram of the device.

The automatic painting device comprises a spray gun 1, the cavity of which communicates with the containers 2 and 3 for paints through a pipe 4, pneumatically controlled shut-off valves 5 and 6, and pipelines 7. and 8. The solvent container 9 is connected to the cavity of the atomizer 1 through line 10 with a pneumatic control valve 11.

The device also comprises an air distributor 12 with cavities, one of which is in communication via hose 13 with containers 2 and 3, and the second through hose 14 with capacity 9.

Air supply system 15 is provided for supplying compressed air to the air distributor 12.

The device is equipped with a tank 16 for collecting the spent solvent and a drain pipe 17 with an additional shut-off valve 18 connected to this tank and pipes 4, 7 and 8.

The device works as follows.

When compressed air is supplied through the air distributor 12 into the container 2 (or 3) for Paint, the latter, with the shut-off valve 5 (or 6, respectively) open, enters the spray gun 1 to color the products. At the end of the painting cycle with a single lacquer material, the diffuser 12 is turned into a position that allows the solvent to flow, the tanks 2 and 3 communicate with the atmosphere, and pressure is created in the tank 9.

With the valve b (or 5) open, paint is returned from the pipelines to the tank from which it was supplied, after which valve 6 (or 5) closes and valve 18 opens, allowing the spent solvent to flow into the tank 16.

The duration of the wash and the volume of solvent are determined experimentally for each type of paintwork material.

At the end of the flushing cycle, the valve 18 closes, the air diffuser Il2 is turned to

paint delivery, and the paint cycle is repeated with another paintwork material.

The solvent left in the pipeline 4 after flushing is used to flush the spray nozzle 1.

The spent solvent can be sent to the ink compartment to dilute the inks used. With this organization of work, not only the emission of solvent into the atmosphere, but also its actual losses can also be minimized.

The application of the proposed device can give an economic effect in the amount of 1,100 rubles. in year.

Claims (1)

1. USSR author's certificate No. 713594, cl. B 05 B 13/00, 1977 (prototype).