DE107077C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

J. G. SCHELTER & GIESECKE in LEIPZIG. Sheet delivery for letterpress presses.

Patented in the German Empire on April 20, 1898.

On delivery devices for letterpress presses, where the printed sheet is last is guided onto the table by sliding bars, it is felt to be a disadvantage that it is these slide bars are rigidly arranged, so that the printed sheets do not interfere with their place the front edges on top of each other and form a fabric that can be cut off smoothly, but as they are prevented by the sliding bars, right up to the front of the table to start up, to build up in a stepped manner and as a result the stack is not straight cuts off, but rather a bevel on its front bezw. rear side suffers.

In order to remedy this inconvenience and a regular overlapping of the The arch boom is one of the ways to achieve arches fed to the delivery table by means of sliding bars Facility given by flicking the slide bars each time before a sheet is on the pile be lifted, and only after this arc has come to rest, put them back on the pile, automatically replenishing themselves as the fabric grows and place higher. In this way one arch like the other must be against the front one Start the bar of the delivery table without being hindered by the slide bars, and. the fabric is layered evenly and straight. The purpose of the present device So, in order to emphasize once again the underlying idea of the invention, regular layering of the sliding bars fed to the table by means of sliding bars To enable sheets on the latter by the fact that the sliding rods open according to the increasing stack thickness of the printed sheets adjust the delivery table automatically.

The invention is illustrated in FIGS. 1 to 5 of the drawings, specifically on a high-speed press with continuously rotating pressure cylinder and stick. Is expressly remarks, the invention DAF on such machines but is not limited, but also good press for ordinary Quick _T can be attached and so on rotating machines like. FIG. 1 shows the boom in side view, FIG. 2 shows it from above and FIGS. 3 to 5 are schematic representations which are intended to show the printing sheet in the individual sections of its movement.

In the figures, the same designations mean the same parts. It designates the frame of A quick press, the B Druckcylinder, C the Gylinderlager further 1 is a screwed-on each of the two Cylinderlager, the superposition of different waves, which do not come further here in question, serving lugs. On both sides of the high-speed press extension pieces 2 are also arranged to accommodate shaft bearings, which are placed in folds 3 of the lugs 1 and combined with them by means of a locking piece 4 'to form a whole, but can also be separated from them as desired. The extension pieces 2 are on the other hand fixed with a roller 5 BEZW. 6 connected to stationary carriage 7, which carries a double ribbon line 21 and 22 moving at the same speed as the cylinder.

The carriage 7 now carries a rotatably arranged in the bearing piece 8 at its left end

Claims (1)

Shaft 9. On this shaft are 10 running down after the delivery table and in sleeves fastened wooden rods 11 firmly arranged. The shaft 9 also carries the firmly connected to it Ratchet wheel 12, in which the locking cone 13 attached to the bearing piece 8 engages. By the Weight of the wooden rods, the ratchet wheel 12 is constantly pressed against the locking cone 13. The shaft 9 is as a result of this together with the wooden rods 11 in their respective positions Locking cone and ratchet wheel held and can then also be adjusted so that the Wooden rods in relation to the table 10 assume a more or less inclined position. The work of the sheet delivery goes in the following way: As soon as the cylinder grippers 14 (Fig. 3 to 5) have released the sheet, which leaves the cylinder with the printed side up, the front edge of the same pushes, supported by the against the cylinder in a known manner extending finger 15, between the ribbon rollers 16 and i6 ^a . As a result, the sheet is grasped by the strip line and the conveyance of the same from the cylinder to the delivery table is now exclusively taken over and carried out by the latter. Only when the bow begins to leave the tape line does it receive further guidance at its front edge by the sliding rods 11. The printed sheet 19 thus first assumes the position shown in Fig. 5, then comes to rest in its full length between the ribbon line (Fig. 4) and is then pushed further and further over the delivery table by the ribbon line, the front part of which is partly guided downwards by the sliding rods 11, partly carried by the air located between it and the delivery table, until at the last moment it leaves the ribbon line completely and gently falls down on the delivery table by gradually displacing the air below it (Fig. 5). As already mentioned, he will be the band leader and the carriage carrying the slide bars through the extension piece 2 (Fig. 1) when the bow boom is actuated firmly connected to the cover piece 1 sitting on the cylinder bearing. That In high-speed presses with a continuously rotating cylinder, however, the cylinder bearing becomes one Back and forth movement of the pressure foundation raised once and then lowered again. These Movement is transmitted to the ribbon line and the Carriage 7 carrying sliding rods, so that it has a rocking motion with every pressure executes around the center 18 of the rollers 5 of the carriage. At the moment in which the cylinder is lowered (FIG. 5) and the printing of the sheet 17 is just beginning, the sheet 19 printed in the last printing period is noticed ^: the delivery table down. At this moment, however, the bars 11 are also raised. As a result, the arch can slide freely away from under them as far as the stop strips 20. Only when the latter has laid down do the rods 11 lower, since the pressure has now ended and the cylinder is raised as a result, and lie with their ends on the arch (FIGS. 3 and 4). So that the ends of the rods 11 rise higher and higher with the growth of the paper stock, but still do not lose their lifting and lowering movement, the ratchet wheel 12, in which the pawl 13, which is seated at a fixed pivot point, engages on the shaft 9 carrying the rods, intended. As a result of this blocking, the shaft g and, at the same time, the rods 11 can only be rotated in the clockwise direction about the axis of the shaft 9, while this shaft is prevented from rotating in the opposite direction by the locking mechanism 12, 13. The ends of the rods 11 can therefore always yield upwards when a new sheet has been placed on the material, whereby they gradually adjust themselves higher and higher with the growth of the paper material, prevented by the locking mechanism from falling back. At the same time, however, regardless of whether they are in a more or less inclined position in relation to the display table, they carry out their oscillating movement with each lowering of the cylinder, i.e. with each pressure. Because as soon as the end of the carriage with the shaft 9 and the rods 11 is lifted, the weight of the rods 11 tries to turn the shaft 9 in the counterclockwise direction and thereby move the locking mechanism 12, 13. Pa τ ε ν τ - A ν s ρ R υ c η: Sheet delivery for letterpress presses, in which the printed sheets are attached to the delivery table are fed by means of sliding rods, characterized in that for the purpose of achieving a regularly stacked stack, the slide bars each time before a sheet is placed on the stack, be raised and at the same time the growing thickness of the stack on the delivery tables adjust automatically accordingly. In addition 3 sheets of drawings.