SU776648A1 - Apparatus for applying coating plates - Google Patents

Description

but the axes of the inner surface of the cylinder, i.e., do not form geometrical points of points equidistant from the axis of the cylinder and the heater, and therefore the drying of the applied photosensitive layer is uneven (the plate parts farther from the heater are dried for a longer time). In the manufacture of photosensitive material on a cardboard or paper Podlolsk, due to the uneven drying time, the material warps.

2. When a statically fixed plate is dried, a uniformly applied photosensitive emulsion under the action of its own weight flows down from the surface of the substrate from the top edge downwards, which leads to a different thickness of the applied and dried coating in the photosensitive material.

3. When drying a photosensitive emulsion deposited on a substrate, heat is transferred through the air, the partition, the workpiece and the heat transfer surface of the heater. It is known that air is one of the best heat insulators, therefore, obviously, the transfer of heat from the heater to the product is difficult and time-consuming, which reduces the productivity of the installation.

. 4. The complexity of the design solution drive installation.

The purpose of the invention is to ensure uniformity over the thickness of the applied and dried coating, improving the performance of the device and simplifying its design.

This goal is achieved by the fact that in a device for coating plastiii, containing means for positional movement of the plates in the form of a rotary table, spaced around its circumference and equipped with pushers for unloading the plates, cylinders with shanks, driving the reciprocating movement of the pushers, driving the rotation of the cylinders and installed with the possibility of reciprocating movement inside the cylinders along their axes; electric heaters for drying plates and a spray gun according to the invention In addition, it is equipped with coupling couplings connected to a rotational drive of cylinders and mounted on cylinder shanks located in spraying and drying zones, and stops interacting with one of the clutch discs in the plates loading and unloading zones.

In addition, the electric heaters are driven by their rotation.

FIG. 1 shows the proposed device, a vertical section; in fig. 2 - view A of FIG. one; in fig. 3 is a view according to B. FIG. one; in fig. 4 shows a section bb of FIG. one.

The device for coating comprises means for positional movement of the plates 1 in the form of a rotary table 2, located around its circumference and equipped with pushers 3 for unloading the plates 1 cylinders 4 with shanks 5, drive 6 reciprocating movement of pushers 3, drive 7 rotating the cylinders 4 and mounted with the possibility of reciprocating movement inside the cylinders 4 along their axes electric heaters 8 for drying the plates 1 and the spray gun 9.

Cylinders 4 are mounted on a table 2 in rolling bearings (not shown in the drawings).

The drive 7 of the rotation of the cylinders 4 is connected to coupling couplings consisting, for example, of two friction disks 10 and I.

The disk 10 mounted for movement relative to the axis of rotation of the cylinder 4 along the guide key 12, is pressed by the spring 13 against the disk I, made in the form of a driven transmission pulley by a flexible link, for example a V-belt 14, from the drive 7 and mounted on rolling bearings.

The SL5OKIT drive 7 is ideal for rotating the table 2 and rotating the cylinders 4 through the drive pulley 15.

Couplings are mounted on shanks 5 of cylinders 4 located in the spray and dry zones.

In addition, the device is equipped with stops 16, interacting with one of the disks 10 coupling clutch in the areas of loading and unloading plates 1.

For reciprocating movement of the sprayer 9, a guide 17 serves, and for heaters 8, a guide 18, and the electric heaters 8 are provided with a drive 19 for their rotation.

Heaters 8 in cross section (perpendicular to the axis of rotation) can be made with a geometry that provides for vortex movement of air in the cylinder.

The device works as follows.

The cylinder 4 with the treated flexible plate 1 is set to position I and the actuator 7 of the table 2 is turned on. The cylinder 4 with the plate 1 moves to the position C, where the heater 8 for the preliminary drying of the plates 1 is inserted inside it. After drying, the heater 8 is removed From cylinder 4 and the latter is moved to position III, where sprayer 9 is introduced into it to apply the photosensitive layer. Table 2 then moves to positions IV and V, in which the coating is dried using rotary heaters 8.

At positions II, 111, IV and V, the cylinders 4 with the plates I rotate.

The centrifugal force that arises during rotation presses the machined plate 1 uniformly over the inner surface of the cylinder 4, while simultaneously moving returnable inside the cylinder 4 along its axis the atomizer 9 covers the surface of the plate 1 with a uniform layer of photosensitive emulsion, and during drying the rotary heaters 8 located inside the cylinder 4 plates 1 are uniformly dried, excluding the emulsion run-off from their surface. The evaporating moisture is removed from the inner cavity of the cylinder 4 by the heater 8, which has a cross-sectional geometry that creates a vortex motion of the air medium of the cylinder 4.

After the stand, the table 2 is moved to position VI, where the product is ejected from the cylinder 4 by reciprocating the pusher 3 from the drive 6.

The cylinders 4 at position I and II, respectively, for loading the plates into cylinders 4, stop automatically from the engagement of the friction disks 10 of the clutch with stops 16, the disengaging disks 10 with the disks 11.

During the rotation of the cylinders 4, in which the plates 1 are placed, due to the centrifugal force, the surface of the processed plate 1 becomes the geometric position of the points relative to the axis of the atomizer 9 and the heaters 8, which ensures a uniform thickness of the applied and dry coating. The presence of the actuator 19 rotation of the heaters 8, having in cross-section geometry, creating a vortex movement of air in the cylinder 4,

allows to intensify the drying process of the applied layer.

Claims (2)

1. A device for coating the plates, comprising means for positional movement of the plates in the form of a rotary table, arranged around its circumference and provided with pushers for unloading plates cylinders with shanks, driving the reciprocating movement of the pushers, driving the cylinders and mounted with the possibility of reciprocating inside the cylinders along their axes, electric heaters for the plates and a sprayer, in order to ensure uniformity in thickness applied and dried coating, improving the performance of the device and simplifying its design; it is equipped with coupling couplings connected to a rotational drive of cylinders and mounted on cylinder shafts located in the spray zones and drying, and stops interacting with one of the clutch discs in zones loading and unloading plates. 2. The device according to p. 1,. Distinguishing the fact that the electric heaters are driven by their rotation. Sources of information taken into account in the examination 1. USSR author's certificate number 264913, cl. At 05C 1/02, 08/13/68. 2. USSR author's certificate number 579030, cl. B 05B 13/02, B 05C 1/02, 06/22/76 (prototype).