SU782882A1 - Apparatus for applying coatings - Google Patents

Description

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The invention relates to a technique of coating and can be used in the application of adhesive undercoats, heat-shielding, paintwork and other coatings on the surface of 5 cylindrical articles, mainly of aviation, rocket and other equipment.

A device for coating cylindrical articles is known, containing a spreading element mounted on a rod. with the possibility of reciprocating movement relative to the product from the drive with the help of rollers, 15 interacting with rod G}. A disadvantage of this device is the thickness variation of the resulting coating due to the uneven movement of the spray elements.

It is also known a coating device comprising a spray gun mounted on one end of a rod mounted in guides with the possibility of reciprocating movement from a drive, a material feed mechanism to the spray gun, kinematically connected with a spray motion drive and an installation mechanism and moving items- jq

LI 2j. The last device is closest to that described.

A disadvantage of this device is its low productivity, since after coating the spray guns with a rod return to their original position, making a soft stroke.

The purpose of the invention is to increase productivity by eliminating idling of the actuator movement of the sprayer and improving the quality of the coating.

To achieve this goal, a coating device containing a spray gun mounted on one end of a rod, mounted in rails with a possibility of reciprocating movement from the drive, a material feed mechanism to the spray gun, kinematically connected with the drive of the dissolver, and an installation and movement mechanism the product is equipped with an additional spray mounted on the other end of the rod, and the mechanism for installing and moving products is made in the form of drums located on both sides s from the spray boom

782882 Ha FIG. 1 shows a general view of the device; in fig. 2 is a view along arrow A in FIG. 3 - knot. The coating device contains sprays 1 and 2 mounted on the ends of the rod 3, mounted for reciprocating movement from a drive comprising a motor 4 with a gearbox, gear 5 and a gear rail b connected to the rod 3. The device includes a material feed mechanism containing tanks 7 for material, connected through shut-off valves 8 to cylinders 9, (in which pistons 10 are installed. Pistons 10 are kinematically connected to gear 5 by means of screws 11 with nuts - gear 12 and sprockets 13. Mechanism of Mother's & pipes equipped with G4 hoses for feeding material to sprayers 1 and 2 and mounted on frame 15. The device is equipped with a mechanism for installing and moving products, made in the form of drums — oboy 16 and 17, located on both sides of the boom. equipped with a rotation mechanism, made, for example, in the form of a motor 18 and a Maltese cross 19. An engine 20 with a gearbox 21 connected by a chain gear 22 with an asterisk 23, integral with gear 24, is provided for rotating the product during coating. mounting on the drum shaft 16 (1 for transmitting rotation from the pinion gear 25, 24 are provided, the clutch 26, gear 27 and gear 28, koto pa is fixed on each product. For the installation of the products, roller rollers 29 are provided, which can be made driven. To turn off the rotation of the products and those in the drum 16, 17), the pneumatic cylinder 3 is installed with the rod 31. To change the feed of the material, a mechanism is provided containing a rack 32, roller 3t3, a copier 34. A gear-gear 12 is in engagement with the rack 32. The device works the next time. The coatings and dividers 35 are loaded into drum-wheels on the support rollers 29. When the engine 18 is turned on, the turning drums turn on, transferring the product to the working area of the nozzles 1 and 2. In the tanks 7, the cover material is poured. One of the cylinder 9 is filled with material, for which the piston 10 is retracted upwards. When this shut-off valve 8 is open. After the cylinder is filled with material, the valve 8 closes. The rods with the 3 nozzles are retracted to the initial position. The piston 10 in the other cylinder 18 is lowered down. When the device is turned on, the boom 4 with the sprays begins to move from the initial position along the product 35. In this case, only the boom 3c by the sprays moves and the material feed mechanism does not move. Product 35 is driven to rotate. Rotation to it is transmitted from engine 20 with gearbox 21 through chain transmission 22 to sprocket 23 and through gear 24 to gear 25, clutch 26 and gear 27 to gear 28. To load products 35 during device operation (while rotating products), it is possible to turn off the mechanism of rotation of the product L by means of a pneumatic cylinder 30 with a rod 31, which once again WIDES the coupling 26. Continuous rotation of the products 35 is necessary when applying and drying coatings. Applied material by the pressure of the piston 10 from the cylinder is fed through the hose 14 to the sprayer 1. Material is applied to the first product, at this time the piston 10 of the second cylinder 9 rises up and sucks the material. The movement of the rod 4 is carried out by the drive of the reciprocating movement and occurs from the engine 4 with the gearbox to the gear 5. and the rail 6. The drive is reciprocating. the movement of the rod 3 is kinematically associated with the material feed mechanism. The rotation is transmitted through a chain drive with sprockets 13, screws 11 and nut gears 12 on pistons 10. Pistons 10 move progressively in cylinders 9, squeezing the material to sprayer 1 or 2. As soon as possible. The SRI barbell 3 of the final position OHai receives a return movement. The first cylinder 9 is made of material from the tank 7. At this time, the piston 10 moves down the material from the second cylinder 9 through the hose 14 to the sprayer 2. The material is applied to the product installed in the drum-holder 17. When the bar 3 reaches the extreme feed position the material on the spray gun 2 is terminated. The drum 16 is rotated and a new product is installed opposite the sprayer 1. The process of supplying and applying the material is repeated, and coating is carried out on all the products that are installed in the drums-clips 16 and 17.. Then, if necessary, subsequent layers of the coating or article are removed and new ones are installed. If the article 35 has a diameter shrinkage (expansion) (nozzles, nozzles, etc.), then a copier 34 is mounted on the rod 3, which controls the flow of material. Feed change mechanism

works as follows. The roller 33 slides along the bar 3. When the roller 33 rolls onto the copier, the rail 32 rotates the gear-nut 12. When the gear-nut 12 rotates, the movement of the pistons 10 speeds up or slows down and this changes (increases or decreases) the flow of material to the nozzles 1 and 2

The device makes it possible to use the idle stroke of the drive for displacing spreaders and, as a result, increase the productivity almost twice. The use of a drum clip to install an article allows for an increase in the productivity of the device, especially if it is necessary to apply several layers of a coating with an intermediate layer between the applied layers. The coating is dried on a drum with product rotation, and then a subsequent layer is applied. The use of a mechanism to disable the rotation of the product allows the loading and unloading of products into the operation mode of the device, and this reduces the auxiliary time. The use of a mechanism to change the material feed reduces the material consumption and improves the quality of the applied coating.

The described device provides a high-performance process for 782882

Carrying quality coating on the product.

Claims (2)

1. Gots v.A. Technique painting internal surfaces. M., Mechanical Engineering, 1971, p. 106-111. . 2. USSR author's certificate 0 No. 508274, class B 05 B 13/04, 06.03.72 (prototype). ; i; - .. v., "- H,.; ... l,, / g - .k., - ". .  v / Vidk X and gig.2 Rygl