CS223072B1 - Side-charge mechanism for aligning paper sheets while moving them - Google Patents

Abstract

The invention relates to the printing industry. The purpose of the invention is to laterally align sheets of paper in the printing industry on letterpress and offset sheet-fed printing machines according to the side pad, as well as the pad of the front pads, while moving the aligned sheet of paper along the feeder table of the feeding system and further to enable the rear edge of the aligned sheet of paper to be accelerated at the same time. The stated purpose (Fig. 1) is achieved by means of rotatably mounted leveling rollers (4j, over which the leveled sheet of paper advances. This sheet is pressed against the leveling rollers (4) by balls (5). Cyclic rotation of the frame (7) with the leveling rollers (4j is carried out by means of an adjusting micromotor (10). Its rotation is controlled by an impulse that proceeds from the photoresistor (13). After the lateral leveling of the sheet, as well as its leveling according to the front pad, the rear edge of the leveled sheet of paper is accelerated by means of the same leveling rollers (4), which at this stage of the cycle are turned in the direction of feeding the paper sheets. In addition to the printing industry, the invention cannot be used in other industries.

Description

223072 3 4

In the printing industry, the invention solves the lateral sheet paper weights of the side sheets as well as the front cartridges, while allowing the paper sheet to be aligned with the feeding system of the feeding system and to simultaneously accelerate the back of the aligned paper sheet. At present, side-loading mechanisms are known which begin to equalize the yoke up to the stopping and alignment of the forward cartridges. These mechanisms are planted and stretched according to the alignment method. In the thrust mechanisms, the sheet is pushed by the thrust thumb to bring the tabs up to the side hub. Although these mechanisms are simple, they use the solo, as the accuracy of sheet alignment decreases with greater format and higher speed. In the case of "macaque" paper, the sapod often avoids, crouches and does not reach the side charge due to the thrust of the thumb and friction between the interstage and conveyor belts.

If the paper is "hard", with increased speed, the sheet, under the influence of accelerating sildostuje, beyond the unbounded side position. In the pull-type mechanisms, a rubberized roller is pressed for a year to press the sheet into the toothed bar by means of a flexible cam. This gear rack moves its sheet to the side load. After this, the rubberized roller lifts and releases the follow-up sheet to the front cartridges. Known is also the mechanism of the lateral liner to straighten the sheets of paper for their movement, which consists of a lateral alignment to which the moving hook sits obliquely placed friction pairs, which consist of smooth roller rollers with bristles.

This mechanism does not allow the rear edge of the sheet to be accelerated and a special front hub mechanism is required for the leveler by the front edge.

The essence of the proposed side-loading mechanism for aligning the sheets of the sheet during their movement is characterized by the fact that it consists of rotatably mounted alignment rollers which are mounted in a frame which is rigidly connected to the adjusting micromotor; spring balls and a flexible supply bria-del 'is supplied. By this mechanism, the efficiency of the sheet-fed printing machine delivery system is increased and, ultimately, the performance thereof is increased. Furthermore, there is no need for a reclosing mechanism and vibration, which is actually a system of gripper catches, is achieved by forcing the sheets to be pressed directly to the side fronts, which, in comparison with the two-fold transfer of sheets This mechanism is characterized by small dimensions and low material consumption, has a simple construction and low dynamic stress on the alignment rollers, and is easy to operate. The mechanism allows the back edge of the aligned paper sheet to be accelerated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational view of the mechanism of the invention. FIG. 2 shows a plan view of the right sidewall mechanism. Naobr. 3 is a sectional view taken along line A-A of the right sidewall mechanism. Paper sheet 1 (Fig. 1j is conveyed to the loading table mechanism by means of conveyor belts 2 on the loading table 2, on the alignment rollers 4 which are rotatable in the frame 7. This frame 7 is also pivoted on the bearing 8. Frame 7 is mounted in When the sheet 1 reaches this zone, it will begin to align laterally to the right side shell 12, which is fixed in the loading table 2. Sheet 1 interrupts the beam rays emanating from the light source 14 (FIG. 3) on the photoresistor 13. The resulting pulse is converted to an adjusting motor 10 which rotates the alignment rollers 4 by an angle α to a straight position. At this time, sheet 1 is aligned according to the front hubs 11 mounted on the press cylinder 24 (Fig. 1) and the right side hub 12. After final alignment of the sheet 1, the forward edge catches the catches 18 on the pressure cylinder 24.

The alignment according to the front cartridges 11a is due to the higher speed of the sheet 1 than the print cylinder 24. After the sheet 1 is captured in the catches 18, the rear edge of the sheet 1 starts to accelerate due to the greater speed of the alignment rollers 4. During this hatching, sheet 1 is avoided on a quantity bounded by the stop 17 (FIG. 1). The displacement of the sheet 1 of paper from the zone of the right side shell 12 gives rise to an impulse of the resistor 13 (FIG. 3) which is transferred to the adjusting micromotor 10. The compensating rollers 4 are turned backwards from the straight line to the angle a and are ready to align the following sheet 1 of paper. The next cycle repeats. The drive of the compensating rollers 4 is carried out by means of a flexible drive shaft 20 from the manifold 19 (FIG. 3). The reliability of the lateral alignment of the sheets 1 depends on the adjustment of the compression force of the springs 8 to the pressure balls 5 by means of adjusting screws. This effort is set for each type of paper to be printed. This control mechanism is coupled with the right side charge 12a by a light source 14 with a photoresistor 13 in the holder 15 (FIG. 2), the side charge 12 with the light source 14 and the photodepository

Claims (3)

SUBJECT A side-loading mechanism for aligning the sheets of paper as they move, characterized in that it consists of rotatably mounted alignment rollers (4), which are supported in a frame (7j) which is fixedly connected to the adjusting micromotor (10), (4) the pressure balls (5) with springs (6) abut and a flexible supply shaft (20) is applied.