SU1031529A1 - Apparatus for applying coatings - Google Patents

Description

2. The device according to claim 1, which is designed so that, in order to expand its technological capabilities, the rack is mounted in guide rails that can be rotated relative to the axis of the spindle screw (provided with a lock of its position relative to the caliper).

The invention relates to devices for coating, mainly by spraying, surfaces of parts such as rotation bodies and to find application in various fields of engineering, in particular in power engineering for mechanized coating of special compositions on the shells and the bottoms of pressure vessels. A device for coating is known, which contains a mechanism for moving a spray gun, made in the form of a carriage mounted on an endless chain with two asterisks, and a slide mechanism for changing the direction of carriage 1. The disadvantage of this device is the absence of mechanisms in its design that ensure uniform coating on the surfaces of parts by continuous step-by-step movement of the sprayer. This leads to a deterioration in the quality of the coating and limits the technological capabilities of the devices. Closest to the proposed technical essence and achievable effect is a device for coating, which contains a rotatable actuator table for securing the part, a carriage with a spray gun mounted on a support, a carriage movement mechanism kinematically associated with the table rotation drive, and an adjustment knot spray position 2. The presence of a step-by-step mechanism in the device allows for a more stable coating rate. However, stepping is a discontinuous process, which adversely affects performance and, moreover, the devices do not provide for the possibility of painting cylindrical surfaces. The purpose of the invention is to improve the performance of the device by ensuring the continuity of the painting process when processing cylindrical surfaces. This goal is achieved by having a coating device comprising a rotatable actuator table for securing a part, a spray gun carriage mounted on a support, a carriage movement mechanism kinematically connected with a table rotation drive and a spray position adjustment unit connected by a shaft to the table and mounted on its end parallel to the plane of the table with a slide with guides, while the carriage support is made in the form of a rack mounted in slide rails parallel to the y, and the movement mechanism — in the form of a drive sprocket fixed on the shaft, located in the guide supports of the tension sprocket and mounted in a rack parallel to the shaft of the spindle with a driven sprocket, spanned along with the drive and tension sprockets, and the spray carriage mounted on running screw. In order to expand the technological capabilities of the device, the rack is mounted in slide rails with a rotational angle relative to the axis of the spindle and is provided with a lock for its shaft relative to the slide,. FIG. 1 shows the device, the main view; in fig. 2 - the same, side view; in fig. 3 shows a section A-A in FIG. in FIG., k is a section BB in FIG. 2; Fig. 5 shows the assembly 1 in Fig.. The coating device comprises a table 1 for securing a part, with the shaft 2 being connected to the central part by means of a key 3.

At the end of the shaft 2 parallel to the plane of the table 1, a support 1 is fixed with guides 5. In the guides 5 there is a support, made in the form of a stand 6 parallel to the shaft 2, on which the carriage 7c is mounted with a spray 8,

The device contains a carriage movement mechanism, made in the form of a drive sprocket 9 fixed on the shaft of the sprocket 10 sprocket mounted in the guide rails and mounted in the rack 6 parallel to the shaft 2 of the winding screw 11 with the sprocket 12 driven, swept together with the drive 9 and the sprocket 10 sprockets chain 13. In this case, the carriage 7 with a spray 8 is mounted on the lead screw 11.

The drive gear 9 has end cams 1t interacting with the coupling half 15 fixed on the shaft 2 with the possibility of axial movement and pivoted with an external spring 1b.

The cam 12 and the tension 10 star (and mounted in the guides 5 of the slide k in the sliders 17 and 18, which are mounted in the guides 5 with the possibility of movement.

The tension of the chain 13 is produced by tensioning sprockets 19 mounted on the sliders 20 mounted in the housings 21 for movement by means of a screw gear 22,

Driving sprocket 12 has a cam end coupling half 23, at certain moments in contact with coupling half 2, installed with the possibility of axial movement on the shaft. 25 motor gearbox 26 mounted on the upper part of the bracket 27, which is rigidly fixed in the slider 17.

The rack 6 has a clip 28 in its upper suit and can rotate with in the slider 17 relative to the bracket 27 with the possibility of fixing its position with the lock 29 in the slots 30 made in the holder 28.

In the rack 6, a retainer 31 with a locking bar 32 is mounted in the lower part. In the lower part of the lead screw 11 there is a spline projection 33 cooperating with the retainer bar socket 32.

The device is mounted on the portal 3, having guides 35, on which with the possibility of moving

a carriage 36 is installed with guides 37. In the guides, the caliper A of the device is movably mounted.

The coating device operates as follows.

The shell 38 is mounted on the turntable 1 and centered. The inclusion of the drive portal 3 set over the shell. Moving the carriage 36 and the caliper (the shaft 2 is centered with the turntable 1, the key 3 is aligned with the turntable jack and enters into it in such a way that the rotation of the table causes the rotation of the shaft 2 with the same angular speed.

The atomizer 8 is installed at a certain distance from the surface (in the inner surface shown in Fig. 1 and the positions is processed) of the shell as follows.

Tensioning sprockets 19 are retracted from chain 13, the chain is disengaged from the driving sprocket 9, the sliders 17 and 18 are installed in such a way that the necessary technological gap is provided between the sprayer 8 and the shell surface. Again, the chain 13 is again engaged with the sprocket 9 , and tension sprockets 19 are applied to the chain and create the necessary tension,

Then the spray gun 8 is set in the working position vertically, while the driven sprocket 12 is connected to the gearmotor 26 by means of cam half couplings 2 and 23, the gear is transmitted through sprocket 12 to the spindle 11, which rotates the carriage 7 with a spray gun 8 to the working position, while the end cams And sprockets 9 are slipping relative to the end cams of the half-coupling 15

After the spray gun 8 is installed in its working position, the gearmotor is turned off, the cam half couplings 23 and 2 are disconnected. At the same time, the rotation of the table 1 and the supply of the mixture for coating to the sprayer 8 are turned on. The rotation from the turntable 1 is transmitted through shaft 2, coupling half 15, sprocket 9 and chain 13 to sprocket 12, which causes the screw to rotate 11, because the number of sprocket teeth 9 and 12 for one revolution of the table 1, the screw 11 also makes one revolution, while moving the carriage 7c with the spray gun 8 by one thread pitch, thus ensuring the continuity of the surface coating process — bypassing. If it is necessary to apply a coating on the outer surface of the cage without removing it from the table, the following operations are performed. When the table is stopped, the caliper rises up along the guides 37 of the carriage 36, providing output from the shell of the shaft 2 and the pillar 6 with the sprayer 8. The latch 29 is taken out of the socket 30, while simultaneously turning on the latch 31 the retaining strip 32 comes into contact with the splined protrusion 33 and fixes the lead screw 11 with respect to the stand 6, and consequently, the holder 28. By connecting the cam half couplings 23 and 24 and turning on the gear motor 26, the sleeve 28 is rotated 180 ° until the second socket 10 and 30 are aligned with the lock 29 by a command from the final release (not azan /, after which the said retainer inserts into the socket and fixes the yoke relative to the bracket 27, and consequently, the slide 17, simultaneously turning on the locking 31 unlocks the lead screw 11. After that, the caliper h is lowered down, ensuring the spray gun 8 is installed in the required vertical position. The implementation in the proposed device for coating the feeder sprayer with the possibility of its smooth adjustment for various sizes of parts allows for a continuous cycle of application coatings and, consequently, improve device performance. In addition, the technological capabilities of the device are expanded, since coating is provided on both the internal and the surface of the product.

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Claims (2)

1. A device for applying coatings, comprising a rotary table from the drive for securing the part, a carriage with a spray mounted on a support, a carriage moving mechanism kinematically connected to the table rotation drive, and a spray position adjustment unit, characterized in that, for the purpose of to increase the productivity of the device by ensuring the continuity of the coloring process when processing cylindrical surfaces, it is equipped with a shaft connected to the central part of the table and parallel to its end about the table plane with a support with guides, while the carriage support is made in the form of a stand installed in the support guides parallel to the shaft, and the movement mechanism is in the form of a drive sprocket mounted on the shaft, located in the support guides _of the tension sprocket and installed7 in the rack parallel to the shaft of the lead screw with a driven sprocket, which is covered by a chain together with the drive and idler sprockets, and the carriage with the spray gun is mounted on the lead H screw. L 2. The device according to π. 1, characterized in that, in order to expand its technological capabilities, the stand is mounted in guiding calipers * with the possibility of rotation about the axis of the screw and is equipped with a latch for its position relative to the caliper.