CS235219B1 - Coloring apparatus with continuous and automatic color control - Google Patents

Abstract

The invention relates to the printing industry. The purpose of the invention is to ensure continuous and automatic adjustable ink supply to the printing form. The stated purpose is achieved by means of an endless elastic belt (1), which is set in motion by means of a supply drum (2). The speed of the endless elastic belt (1) is the same as the peripheral speed of the form roller (12). The ink is rolled onto the form by means of one spring-loaded roll (5). The required amount of ink from the ink tray (4) is fed by means of a mechanism for automatic ink supply regulation, which consists of spacing elements (6), adjusting micrometric screws (8) and microdrives (7). This automatic regulation system allows for continuous regulation of the ink supply in individual zones of the ink tray. The ink tray also includes a tension roller (9) with a scraper blade (11). The function of this mechanism is to tension the endless elastic belt (1) and, using a scraper blade (11), remove the paint from the endless elastic belt (1) that has remained on it after passing through the contact zone, thereby removing the "color relief". Apart from the printing industry, the invention cannot be used in other sectors.

Description

3, 4, 235219

BACKGROUND OF THE INVENTION The present invention relates to a coloring apparatus with a continuous and automatically controllable ink supply for printing. Currently, conventional coloring apparatuses (roller assemblies) are known which, due to the large number of rollers, have required a significant increase in their size, high energy demand and cost to produce them, such as impairing their operation. In these apparatuses, it is desirable to place a complex system of spreader rollers that obviates the unwanted "color relief" which negatively transfers the display of the printing elements from the mold to the inking rollers. Furthermore, inking apparatuses with a single wound roll are known to have a diameter similar to that of the mold roll. Small diameter cylinders are disposed around the roll, one of which receives color from the pickup roller in a continuous, wide, colored layer. Some cylindrical scraper blades remove "color relief". This "color relief" remains on the rollers after contacting them with the mold placed on the mold roll. Another characteristic of these dyeers is the opposing rotation of the individual cylindrical pairs. The color comes from the so-called "funnel", which is created by arranging the pair of rollers themselves. Impellers is individual. The coarse feed of the paint seam is controlled by varying the relative speeds of the ink rollers and by increasing the pressing effort in these roll pairs. In the inking funnel formed by the ink rollers, there is a loosely rotating steel bar of circular cross-section which helps to blend the color and thereby remove the air bubbles from it. Coloring apparatuses with a resilient-elastic strip are also known in which the ink is applied in a wide and continuous strip. Also interesting is the coloring book, which can be used in small-format offset machines. A cartridge with a double-sided tape is designed to replace the classic color, which transfers one roller to the other. This coloring bar contains only one roll-up roller, with a porous coating in which the color passes through the hollow.

The essence of the proposed coloring camera with continuous and automatically controllable ink supply with elastic elastic band and single sprung wound roll is to uniformly apply the ink to the printing mold and is characterized by being left of the feed drum providing movement of the automatic feed control mechanism. dyes consisting of spacing elements on the outside, adjacent to the inking dye, actuated by the micrometer setting micrometer screws and the tensioning roller to which the scraper blade adheres.

The proposed coloring apparatus achieves a uniform and stable application of the ink to the printing form. The ink supply is automatically regulated to the entire printform area even to the outermost locations of the mold. The entire apparatus is automatically turned off when the signal from the locking device is advanced. High color sensitivity of the coloring agent to changes in the automatic color control system is ensured. Only a minimum of time is required to stabilize the work after setting up the dyeer's system or running the machine. The effect of "color relief" on the infeed roller is avoided. The dyeer has a minimum energy intensity, a simple construction, allowing easy access for the operator.

In the accompanying drawing, a schematic diagram of the inking apparatus is shown by a continuous and automatically controllable ink supply.

The color is passed through a continuous coloring process 4 by means of an endless elastic band 1 onto a mold cylinder 12 on which the printing mold is fixed. The transfer of the color of the zlastic strip 1 to the mold cylinder 12 is accomplished by means of one wound cylinder 5 which is spring-loaded and has a coating of elastic material. The circumferential velocity at the point of contact of the wound roll 5 of the aform roll 12 is the same and is provided by a separate drive of the feed spindle 2 which is coated with the elastic layer 3 due to the increase in the contact strength. automatic color control, consisting of spacing elements 6, adjustment micrometer screws 8 and micro drives 7.

The signals that advance to the micro-drives 7 are transmitted to the spacing elements 6. The non-final elastic strip 1 encircles the spacing elements 8 and thereby forms the necessary film which is transmitted by the wound roll 5 to the mold roll form 12. This way, the color transfer to the mold is automatically regulated. The signals to the microphones 7 proceed from a separate electronic device (microcomputer), the purpose of which is to compare the measured quantities with the order and automatically, after processing the data, send a signal to the automatic color control mechanism. The tensioning of the endless elastic strip 1 is effected by a tensioning roller 3 with a tensioning mechanism 10. The wiping blade 11 is pressed against the tensioning roller 9, the purpose of which is to wipe the color from the endless elastic band 1 after passing through the contact zone. the endless elastic band 1 in the dyeing line 4 is always "clean" and only takes up the amount of color that allows the adjustable profile to be removed in the automatic color control mechanism.

The proposed coloring book allows you to use

Claims (1)

F R E D Μ Ε T Inkjet machine with continuous and automatically adjustable color supply with elastic-elastic strip and single spring-loaded roller, characterized in that the elastic-elastic strip (1) embraces the supply drum (2), a mechanism for automatic regulation of color supply, , from the outside, adjacent to the inking unit (4), controlled by adjusting micrometer screws (8j connected to the micro-drives (7) and the tensioning roller (9), to which the scraper blade (11) adjoins.