SU1577865A1 - Arrangement for applying coating on internal surface of articles - Google Patents

Abstract

The invention relates to devices for spraying and applying liquids on the inner surface of products and can be used for applying coatings on the inner surface of products. The aim of the invention is to improve the uniformity of coating products with a variable cross-sectional length, which is achieved by the implementation of the driving element 6 of the carriage movement mechanism in the form of a pulley with a mirror-symmetrical profile varying in length, one part of which is made with the left helical groove 11, and the other is with the right helical groove 12, with one end 13 of the flexible element laid in one of the helical grooves 11 and fixed to the pulley at its beginning, and the other end 14 of the flexible element fixed to the pulley at the beginning of the other screw grooves 12. 3 yl.

Description

t (2) 4427381 / 23-05

(22) 04/05/88 (46) 07.15.90. Bul No. 26

(71) Research Institute with Experimental Machine-Building Plant of Scientific-Production Association Spectr

(72) A. B. Kozlov, P. V. Myzgina, G. A. Henrich and. M. B. Muratova (53) 667.661.2 (088.8)

(56) USSR author's certificate. No. 818663, cl. B 05 B 13/06, 1979

(54) DEVICE FOR COATING THE INTERNAL SURFACE OF PRODUCTS

(57) The invention relates to devices for spraying and applying.

liquids on the inner surface of products. The aim of the invention is to improve the uniformity of coating products with a variable cross-sectional length, which is achieved by the implementation of the driving element 6 of the carriage movement mechanism in the form of a pulley with a mirror-symmetrical profile varying in length, one part of which is made with the left helical groove 11, and the other is with the right screw groove 12, with one end 13 of the flexible element laid in one of the screw grooves and fixed to the pulley at its beginning, and the other end 14 of the flexible element fixed to the pulley at the beginning of the other screw New groove 12 .. 3 Il.

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The invention relates to devices for spraying and applying liquids on the surfaces of products and can be used for coating the inner surface of products.

The aim of the invention is to improve the uniformity of the coating of products with varying length of the inner diameter.

Fig. 1 shows schematically the proposed device for applying a coating on the inner surface of products; Figures 2 and 3 show the pulley of the carriage movement mechanism;

The device contains a carriage 2 mounted on the guide 1, a boom 3 with a spray head 4 is mounted on the carriage 2, the carriage 2 is equipped with a gear, including an electric motor 5, a driving 6 and a tension 7 rotating elements and a flexible element 8 (rope ), connected by vodka 9 to the carriage 2, the electric motor 5 is connected to the driving element 6 by means of a reversible mechanism 10 the leading element 6 is made in the form of a pulley with a change in the length of the mirror-shaped profile. One part of the profile is made with a left screw groove 11, and the other with a right screw groove 12. One end 13 of the flexible element 8 is laid in one of the screw grooves 1 1 and fixed to the pulley at the beginning of the groove. The other end 14 of the flexible element 8 is fixed to the pulley at the beginning of the other helical groove 12. The drive rollers 16 are used to install and rotate the workpiece 15,

The device works as follows.

The workpiece 15 is mounted on the rollers 16 and includes a drive for their rotation (not shown). An electric motor 5 is turned on, which drives the driving element 6 through a reversing mechanism 10. When the driving element 6 rotates, the flexible element 8 winds up from one half of the pulley and winds up onto the other half, it is subsequently led out of one helical groove 11 and inserted into the other a screw groove 12, The carriage 2 coupled with the flexible element 6 is moved along the guide G and inserts the rod 3 with the spray head 4 inside the workpiece 15.

Include the flow of material to the spray head 4 and in the process

its longitudinal movement and rotation of the product 15 is carried out by coating. The speed of movement of the spray head 4 automatically varies in accordance with the diameter

5 pulley in place of the gathering of the flexible element 8. When performing sections of the pulley with a variable outer diameter, inversely proportional to the change in the internal diameter of the sections

0 the article to be rolled, provides the necessary increase in the speed of movement of the spray head while reducing its cross section in the coating area and

5 a decrease in its speed of movement with an increase in the size of the product, which ensures an increase in the uniformity of the coating,

0 Ф ° РмУла inventions

The device for coating the inner surface of the products, containing

an ell carriage mounted on

there is a boom with a spray head and a carriage movement mechanism, including a drive with driving and tensioning rotating elements and

"Q we sew them with a flexible element connected to a carriage, characterized in that, in order to improve the uniformity of the coating of products with variable inner diameter,

The driving element of the carriage movement mechanism is made in the form of a pulley with a mirror-symmetrical profile varying in length, one part of which is made with a left screw groove and the other with a right screw groove, with one end of the flexible element laid into one of the helical grooves and attached to the pulley at its beginning, and the other end of the flexible element is attached to the pulley in

 start another screw groove.

50

Claims (1)

Claim A device for applying a coating to the inner surface of products comprising a carriage mounted on a guide, a rod with a spray head mounted on it, and a carriage moving mechanism including a drive with a driving and tensioning rotating elements and a flexible element covering them connected to the carriage, characterized in that ,. 'in order to increase the uniformity of coverage of products with a varying inner diameter along the length, the leading element of the carriage movement mechanism is made in the form of a pulley with a varying length not a mirror-symmetric profile, one part of which is made with a left helical groove, and the other with a right helical groove, with one end. the flexible element is laid in one of the helical grooves and mounted on the pulleys. ve at its beginning, and the other end of the flexible element is mounted on a pulley at the beginning of another helical groove.