SU806144A1 - Apparatus for applying soating on articles - Google Patents

Description

(54) DEVICE FOR COATING THE PRODUCT

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The invention relates to a device for applying a protective coating on a product by dipping with the subsequent removal of excess coating material and can be used in various industries, in particular in the radio-radio industry for varnishing printed circuit boards.

A device for coating products contains a container for a coating material, a device for securing products, a mechanism for lowering products into a container, and a mechanism for rotating products.

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The disadvantage of this device is that when coating is applied, strong splashing into the environment occurs.

The purpose of the invention is to prevent the coating material from splashing into the environment.

This goal is achieved by the fact that in a device for applying coatings on products containing a container for a coating material, a device for securing products, a mechanism for lowering products into a container and a mechanism affect the products,

the container is installed with the possibility of simultaneous rotation with the product immersed in it and is made of three compartments: working, backup and intermediate, with the working compartment separated from the backup compartment by a partition, the height of which corresponds to the level of product coverage, and the intermediate compartment is located

0 above the working and reserve, is connected by a tube to the lower part of the working compartment and is separated from the working and backup compartments by a partition, which forms a window for the overflow of the coating material from the working to the backup compartment to the intermediate one.

FIG. 1 schematically shows a device in reserve; in fig.

0 2 - section A-A in FIG. 1 in FIG. 3 shows a section BB in FIG. 2

The device contains a frame 1 with a crosspiece 2 located on it, to which a mechanism is attached

5 lowering boards 3, made in the form of a pneumatic cylinder. The clutch 4 interconnects movably the current of the pneumatic cylinder 3 and the fixture 5 for securing the products, with the plate 6 installed in it in the clamp 7,

A capacity of 8 s is installed on the platform 9. The capacity of 8 consists of three compartments: working compartment Q Reserve b, intermediate C. Transit compartment C is located above the work area and the backup € and is connected to the lower part of the working compartment through a tube and is separated from the working compartment O and the backup fc by a partition forming a window for the overflow of the coating material from the working CJ and backup b to the top wall of the intermediate compartment C compartments in the intermediate. The working compartment O is separated from the backup b by a partition f, the height of which corresponds to the level of coverage of the product,

The platform 9 rests on the roller of the rotation mechanism 10 with the electric motor 11. Under the platform-9 there is a mechanism for raising and lowering the container with the coating material, made in the form of a pneumatic cylinder 12. In the pneumatic cylinder 12 there is a brake disk 13. A fixture 5 for fixing products is connected to the platform 9 a translational pair consisting of a slider 14 and a guide 15. A stop ring 17 is fixed on the centering rod 16.

The device works as follows.

A device 6 is inserted into the clamp 5 into the fixture 5 for fixing the products. The pneumatic cylinder 12 lifts the platform 9 with the capacity 8 fixed on it until it stops in the ring 17. The pneumatic cylinder 3 lowers the plate 6 into the working compartment Q of the tank 8. After holding sufficiently for wetting the surface to be covered, the pneumatic cylinder 12 lowers the platform 9 with the capacity 8 onto the roller of the rotation mechanism 10, the electric motor 11 is turned on and the platform 9 rotates, the capacity 8, the fixture 5 for fastening the products c. the board installed in it is 6,

The material of the coating from the working compartment O and the reserve b of the container 8 under the action of centrifugal forces passes through the window C to the intermediate compartment C. At the same time, the excess varnish from the board 6 is dropped onto the walls of the tank 8 at a relative speed of 0.1-0.05 m / s, i.e. only the radial velocity obtained by a drop of varnish when the board 6 is rotated and not enough to spray the varnish. The rotation time of the board 6 is determined by the thickness of the lacquer coating required by the technology, after its expiration the electric motor 11 is turned off and the brake disk 13 is pressed by the pneumatic cylinder 12 to the platform 9.

The braking process of the platform 9, the tank 8 and the device

5 for fastening products. At the beginning of deceleration, the pneumatic cylinder 3 pulls the plates 6 out of the working compartment and capacity 8. As the speed of rotation of capacity 8 decreases, the lacquer from the intermediate compartment G flows down the tube ot into the working compartment a. The material of the coating in the working compartment a rises to the level corresponding to the height of the partition wall f of the compartment indicated by the arrow in the drawing and further

flows through the partition into the backup compartment ij, since the level of the coating material in the working deferral. automatically restored and maintained before coating new

5 fees. The coated board 6 with the clamp 7 is removed from the fixture 5 for securing the products and a new board is inserted in its place. The pneumatic cylinder 12 removes the brake disc 13

0 from platform 9. The device is ready for applying the coating material to the inherited boards. .

The use of the proposed device allows the coating to be applied.

5 on the boards to a predetermined level, while ensuring good quality of the coating, eliminates the splashing of varnish in the tank, and it also provides the ability to use the device in automatic lines.

Claims (1)

1. USSR author's certificate No. 542565, cl. B 05 C 3/02, 1974 (prototype).