CS248128B1 - Coloring apparatus with elastic elastic band - Google Patents

Abstract

The solution relates to the printing industry. The purpose of the solution is to ensure uniform and continuous application of ink to the printing form. The above effect is achieved by means of an elastic belt (4) that surrounds a hollow roll-up roller (3). The thickness of the ink layer in the contact zone is adjusted by a system of automatic tension control (9) of the elastic belt (4), connected to two tension rollers (8). The preliminary thickness of the ink layer is adjusted by means of a dosing roller (6), which abuts the take-up roller (5) over its entire width through the elastic belt (4). The discharged ink layer is compacted before the contact zone by a spring-loaded compacting roller (10). This system allows automatic and continuous regulation of the ink supply (7) to the printing form (2), which is clamped on the form roller (1).

Description

248128 3.

BACKGROUND OF THE INVENTION The present invention relates to a coloring and elastic strip which provides a continuous and automatic control of the ink to the printing mold. Conventionally, conventional coloring agents (roller assemblies) are known which, in the wake of the large number of cylinders, required significant enhancement of their dimensions, high energy efficiency and cost of production, as well as impairing their operation. In these apparatuses it is necessary to place complex systems of wiping and distributing rollers, by means of which the unwanted "color relief" is removed, which negatively transfers the display of the printing elements from the mold to the rollers of the dyeer. Furthermore, inking apparatuses with a single roll-up roller are known which have a diameter similar to that of the roll. Small cylinders of a small diameter are disposed around the roll, one of which receives paint from the sleeves and the roll in a continuous, wide, colored layer. Some cylinders have wiper blades that remove "color relief". This "color relief" remains on the winding rolls after contact with the mold placed on the mold cylinder. Another characteristic feature of these dyeers is the silent rotation of the individual cylindrical twins. The color is given from a so-called "funnel", which is created by arranging the two cylinders themselves. The drive of the rollers is individual. The thickness of the dye seam being fed on the mold is controlled by varying the circumferential speed of the rollers in the dyeing machine and by increasing or decreasing the pressing force in these roll pairs.

In the inking funnel formed by the color rollers, there is a rotating steel axis of a circular cross-section that helps to blend the color and thereby eliminate air bubbles. We also match the coloring apparatuses with elastic-elastic bands in which the ink is printed in a wide and continuous color band. Also interesting is the coloring book, which can be used in small-format offset machines. Instead of the classic, the colorist is designed to have a double-sided color tape cassette that is mutually supportive, and from one to the other. This barrel contains only one wound cylinder, which has a porous surface, through which the color passes through the du-axis.

The essence of the proposed coloring camera with elastic elastic band, which engages the wound roller and the tensioning roller is evenly applied to the printing form, and the essence of which is that the two tension rollers are connected to the automatic tension control device, while the spring tension roller is snug. the cylinder and the dispensing roller adheres to the dispensing cylinder. The proposed inking apparatus achieves a uniform and stable application of the color printing form. The ink supply is automatically regulated over the entire printing sheet surface. The entire apparatus is automatically withdrawn from the mold cylinder as the blocking device signal progresses. It provides a high sensitivity of the colorant to changes in the automatic color control system. Only a minimum amount of time is needed to stabilize the work after setting the colorist system or starting the machine. It eliminates the effect of "color relief" on the roll-on roll, encircled by the elastic-elastic band in place of its contact with the press mold in the mold roll. The dyeer has a minimum of energy intensity, a simple construction that allows the Dull Approach to be served.

In the accompanying drawing, the principle diagram of the inking apparatus is shown in a flexible elastic band.

Color 7 is applied to a flexible elastic band 4 in a uniform and wide band. The preliminary color thickness 7 is controlled by means of a feeder roller 6, which over the entire width of the adhering roller 5. The greater the pressing effort of the feeder roller 8, the smaller the thickness of the applied color, and vice versa. The automatic regulation of the dye ridge 7 on the printing mold 2, which is fixed by the mold cylinder 1, is carried out by means of two tension rollers 8 connected to the automatic device at the position of the contact roller 3 encircled by the elastic-elastic band 4 with the mold cylinder 1. To control the tension of the elastic-elastic band 4, the greater the tension, the thinner the color seam at the point of contact and vice versa, the smaller the tension, the greater the seam color. The task of the spring-loaded compaction roller 10 is to compact the color layer over the entire width of the roll roller 3. The pressure rollers 11 press the elastic-elastic strip 4 against the roll-in roller 3 firmly and thereby allow the automatic control of the elastic-elastic strip 4 in the contact zone. . Based on the corresponding signals that proceed to the automatic tension control system. 9, the tension rollers 8 perform corresponding movements, either from each other when a smaller groove of the color seam is required, or to each other, and a larger pitch of the color seam is required. In the event of a failure, the wound cylinder 3, which is covered by the elastic-elastic band 4, is automatically withdrawn from the mold cylinder 1. The transfer of the elastic-elastic band 4 in contact with the zone, the resulting "color relief" is seen in the inking room by The strip 4 is picked up in color 7 at a thickness which is determined by the finishing roller 6.

The present invention has application in sheet, roll offset machines as well as in disk roll rotary machines.

Claims (1)

248128 PRED Μ ET Coloring apparatus with elastic-elastic waistband, which engages the roll-up roller and the tension roller, characterized in that the two-tension rollers (8) are connected to the automatic tension control device (9), which is brought to the left the spring-loaded compaction roller (10) adheres to the tensioning roller (8) and the dosing roller (6) adheres to the take-up roller (5). 1 sheet of drawings