DE82127C - - Google Patents

Description

ιιην

IMPERIAL

PATENT OFFICE

The present invention relates to improvements in cylinder printing machines of the im Patent No. 58284 contained type, i. H. on those with a fixed type bed and cylinder rolling over it, which latter only rolls and works during the process, during the However, the decline is recorded. The improvements to this machine are related to a mechanism for moving the cylinder, and also to an application and removal device of the Linprinted resp. printed sheet and finally a mechanism for Movement of the distribution rollers, the application device being influenced in this way that this does not work in certain cases, i. H. an investment does not take place, nevertheless the cylinder wanders back and forth. The construction of the present cylinder printing machine also enables their use for lithographic purposes at any time.

The printing cylinder b (Fig. 1) carries the sectors c on both sides on its axis b ^x. These (also Fig. 9 and 14) are toothed on their rim and each engage with their teeth in a rack a ² , which is attached to the connecting piece a ^{1 of} the machine frame. For lateral guidance, the sectors c rest on flanges a ¹ (FIGS. 1 and 9), which are also firmly attached to the frame. A transverse ^{rod c 4} connects the sectors with each other and at the same time carries the engagement pin of a crank rod d which, by virtue of its connection with the continuously rotating gear wheel e, moves the sectors back and forth so that they ^{roll on the one hand on the toothed racks α 2} , but on the other hand the Cylinder axis b ¹ impart a straight back and forth movement.

The cylinder b receives its rotation during the preliminary or working step partly by a gear wheel b ⁷ loosely seated on the cylinder axis b ¹ , and partly by a gear wheel b ^& which is firmly connected to the cylinder b and which is driven by two toothed racks a ^e arranged on the upper frame a ³ roll; Here the gear wheel b ¹ (Fig. 11) transmits its rotating movement during the preliminary or working process of the cylinder to the latter through a resilient driver £ ⁹ , which, resting against a beveled shoulder b ^{s of} the cylinder, only acts in one direction. If the wheel b ¹ rotates in the other direction (decrease), the cylinder, which is held back by a special locking device, remains in its position without rotating, since the coupling between it and the gear wheel b ¹ is interrupted for so long until the resilient driver b ⁹ as it continues to rotate, sliding through under the projection b ⁸ , reaches its end position (FIG. 2) and now lies against the beveled front edge of the projection b ^a again to rotate the cylinder again during its process to be able to. The locking device of the cylinder indicated above consists of the following:

The cylinder b carries on the other side a gear wheel b ^e (FIGS. 13 and 14), which is firmly connected to it and engages in a second rack a ^{8 seated on the frame.} The toothing of the wheel b ⁶ is interrupted on part of the circumference, except for b ⁶ with α ⁸ during the retraction of the cylinder

To bring intervention. In this position, the angle piece b *, which is cast on b and protrudes slightly beyond the periphery of b ⁶ , points downwards and is clamped between two locking levers i and i ^1. The latter are rotatably bolted to the carriage g and are always pressed upwards by suitable springs. This locking of the cylinder is triggered at the end of the retraction of the cylinder by exerting a pressure to the right on the lever t ¹ , whereby i ^{1 is} lowered and the angle piece b * is released. If the movement is reversed, the cylinder is rotated by the influence of the wheel b ¹ and the resilient driver Z> ° until b ⁶ comes back into engagement with α ⁸ and can now rotate together with the pressure cylinder. When the process is complete, b * comes down again, snaps, after i has been pressed down, between i and V and is held there. So that the elbow does not jump over i ¹ due to the living force inherent in the rotating cylinder, there is also a brake shoe n> which is bolted rotatably to b ⁶ , which, pressed by a spiral spring against the inwardly protruding frame hub g ¹ , grinds on it and acts as a drag brake against the leading movement of the cylinder.

The triggering of the locking device before each operation by the indicated pressure on P will be described in more detail later.

The slide frames g are attached to the cylinder axis on both sides of the machine (FIGS. 1 and 14), which carry the applicator rollers h. The two frames g are connected by a rail g * and provided with friction rollers g ⁵ , which are held in oscillating bearings g ⁶ , the pivot point of which is g * , and are pressed more or less strongly against the flange of bed a ³ by adjusting screws g ~ can, whereby then the pressure cylinder b is pressed against the mold.

An arm g *, which is also placed under the horizontal flange of the frame a ^z , which is bent at right angles, is used to further secure the frame g.

13 and 14 show a modified embodiment of this previously described device with a parallel adjustable bearing g ^e , the pressure of the rollers g ^{5 being} effected by tensioning the spring g ^{11 by} means of a screw g ¹ .

The distribution rollers m ^l (Fig. 1) are moved on the paint table a ⁵ and receive the paint from the ductor roller y. The same are arranged in a frame m , which also carries the filing table η. The frame m is connected by a rod / to the sectors c in such a way that the carriage with the rollers m ¹ makes a shorter path than the cylinder in order not to unnecessarily provide the color table with paint over a longer distance than for Delivery to the applicator roller h is required.

The feeder (Fig. 1, 2, 5, 6, 16 and 17) is attached to the feed table s. This can be rotated around one of its edges and is in the raised position when a sheet of paper is placed on it. Since the table is still inclined in this position, the sheet that has been placed on it would slide down. In order to prevent this, a rail ^{sl is} attached near the movable edge of the table, against which the laid sheet rests.

Is now b on its Hergange into the position shown in Fig. 2 position of the cylinder passes, then the feed table has s lowered due to later-described mechanisms, in such a way the lower edge of DAF of lying thereon sheet on the cylinder comes to rest, wherein at a lowering rod s ⁶ seated springs s ⁹ prevent the arch from sliding down, while likewise springs s ^{10 seated on s 6} press the leading edge of the arch downwards against the cylinder b. The grippers b ^vi then close and clamp the run-off edge of the sheet to the cylinder. The cylinder immediately begins its movement in the direction of arrow n> ⁹ (FIG. I) and pulls the paper off the feed table s as it rolls. In order to bring about the bending of the lower edge of the sheet to be picked up in a reliable manner, a two-armed lever s ^{1 is} movably mounted on both sides of the table S. The front arms of these levers carry a rod s ⁶ near the movable edge of the table, while the rear arms are always pressed against the stops s ^{11 located} on the machine frame ^{by springs s 8 located on the table.} If you now imagine the table s rotated downwards, the rear arms of the levers s ¹ are pushed upwards by the springs s ^a. Since the fulcrum of the lever s ⁷ sits on the movable table and coincides with it, the consequence is that the rod s ⁶ moves downwards faster than the end edge of the table and thus acts on the springs s ⁹ and s ^10, that these influence the trailing edge of the sheet to be created in the manner described above.

The table s is raised and lowered by an eccentric s ⁵ (Fig. 1) by means of the roller lever s ³ and by the arm s ² , which is attached to the feed table, at the moment when the cylinder reaches its end position (Fig. 2) has reached. In order to always bring the cylinder to rest in exactly the same position, it has a recess b ** (Fig. 2), which is located on the

stop r ¹ attached to the frame comes to rest;

The depositing device (Fig. Ι and 8) consists of a fixed claw ρ ¹ and a cooperating with this movable gripper ρ and is used to capture, hold and lay out the printed sheet on a lay-out table n. To be able to lift the paper from the cylinder, is it is necessary to open the gripper b ^{12 beforehand.} For this purpose, the same are attached to the gripper shaft b ² , which protrudes at the outer end of the cylinder b and there carries the lever b ^B (FIG. 3), which again engages with a ratchet lever M. Depending on whether this is in the position shown in FIG. 13 or comes to rest further in the incision of the arm b ^s , the grippers b ^{12 are} open or closed.

At the moment when the cylinder rolls over the document, the grippers are closed until the roller b ^s on the lever i » ⁴ finally comes to a stop 0 (FIGS. 7 and 8) and the gripper opens. As the cylinder moves further, the roller b '° hits the lever p ² and lifts it, so that the same now, as a result of the action of the spring p ^li, snaps forward over the nose ji ³ and the gripper ρ against the fixed claw p ¹ presses. In the meantime, however, the printed paper that has become free when the roll b ^h hits stop 0 has already got between the gripper ρ and claw p ^l and is now held back there. The cylinder now immediately begins its way back and the printed paper is pulled off the same amount and placed on the depositing table η (FIGS. 1 and 2). The latter sits on the frame m of the distribution rollers m ¹ . When the cylinder has reached the rightmost position and the sheet is clamped in the gripper ρ ρ ^λ , the table η is of course also in the extreme right position, but the latter is taken along by the cylinder as the cylinder retreats and slowly under the withdrawn sheet pushed. Thus, the arc length pp by the gripper will released ^1, stöfst a m at the side of the frame-mounted pin m ² to a lever q (FIGS. 1 and 8), which while the previously notched lever p ² back to its position behind the Pushes back nose ^{ρ 3.} As a result, the gripper ρ is now turned down from p ¹ and the sheet is completely released. The table η with the bow falling on it is moved to the right in the next moment.

The shutdown of the pressure is done in the following way:

A lever frame t, which is mounted on the frame in pin t ¹ , is set in oscillating motion by a bolt i ^{3 of} the wheel e.

The lever frame carries at one end of its horizontal rail v ⁴ (Fig. 3 and 4) a rotatable about v ² arm ν, which carries a roller ν ¹ and at the same time still supported by a rod v ³ with a slider v on the rail v ^{4 w} communicates. Two fabric arms t ^l and t ^h (Fig. 1) are attached to the ^{slide, of which the arm ί 4} through the lever b ⁴ (Fig. 13) closes on "the gripper b ¹² and the arm t ^h through the lever i ² . triggering acts on the locking device of the cylinder, once the Stofsarme with the slider v were fed in the direction of the arrow ^10. If such pushing forward does not occur, so the grippers remain b ^l - that have been opened by the delivery device, any open, and As a consequence of this, the locking device b * was not released by the lever i ² i ^l , the pawl b ⁹ , sliding on the bevel of b ^s , must pass under b ^s and the cylinder b starts its passage without closing itself The shifting of the fabric arms i ⁴ and f ⁵ is brought about by turning the arm ν (Fig. 3) by causing the roller ν 'sitting on it to swing the lever frame t against a slant Approach κ ⁵ am. Lever u starts up and thereby ^{pushes the slider v 10} with its fabric arms £ * and t ⁵ forward in the direction of the arrow and brings the latter into the correct position in order to influence the mechanisms already described above. In order to prevent a sheet from being captured in the event of a disruptive incident, turn the stop w ⁵ respectively. the lever u carrying it downwards, so that the roller v ^l simply remains in its position when the lever frame t oscillates and the arm ν is not rotated. The lever u, which is bolted to the frame, rotatable about a pin u * , is raised or lowered by hand by the eccentric u ² with the lever u ^1. A stop m ⁶ on the lever u serves to take up the arm s ^{12 of} the table s when the latter wanted to lower itself as a result of the lever s ³ and eccentric s ^s (FIG. 18). However, this only applies to the lowered position of the lever u, while the arm s ¹² with the raised position of the lever u (Fig. 19) ^{can slide past its stop m 6} , so the table lowers, the fabric arms move outward and the grippers b ¹ - used to hold the bow in place. The fabric arm i ⁵ disengages the locking device of the cylinder, which held it in place during its passage, by pushing the lever P to the right. A toothed arm u ⁴ (Fig. 10), in which a resilient pawl m ³ engages, is used to hold the lever u in various positions.

The device for lithographic purposes shown in FIG. 15 differs from the one previously described only in the arrangement of the moistening devices j and k, but otherwise has completely the same devices as the machine described for letterpress purposes.

Claims (4)

Patent Claims: 1. High-speed cylinder press with fixed type bed and cylinder rolling over it, marked by sectors fc), . which have their fulcrum in the axis (b ^l ) of the printing cylinder and are moved by a crank mechanism in such a way that their toothed rim rolls on a rack (a ² ) fixed to the machine frame, whereby the printing cylinder receives a progressive linear movement. 2. At the under i. claimed a high-speed cylinder press a sheet feeder, characterized by a rod (s ^ J, which is carried by two two-armed levers fs ⁷ rotatably attached to the oscillating feed table) and, as a result of the springs fs ⁸ acting on the levers fs ⁷ ), moves faster than the edge of the rotatable Feed table lowers and springs fs ⁹ ) respectively. fs ¹⁰ ) moved in such a way that the former hold the applied sheet and the latter bend the leading edge of the sheet into a position suitable for entry under the opened gripper. 3. In connection with the sheet feeder mentioned under 2. a mechanism to turn off the sheet feeder while the cylinder maintains its progressive movement, characterized by a swinging lever frame ft), on which the gripper system fb ⁿ ) influencing fabric arm ft ⁴ ") is displaceable is arranged, and by a stop fit ⁵ ) on a lever (u), whereby with the oscillation of the lever frame ft) and the corresponding position of the lever (u) the cuddle arm (t *) is displaced in such a way that it pulls the gripper fb ^li ) closes to grasp the sheet, while after switching over the lever fu) the fabric arm (t *) leaves the gripper fb ¹ -) open and the feed table remains in a raised position, in such a way that the sheet placed on the feed table is not taken with it. 4. On the high-speed cylinder press marked under 1. a sheet depositing device, consisting of: 1 a) from a delivery table (s) moving at the same time as the cylinder (b) _i but slower than this! ■ ': b) from a ratchet lever fp ² ), which, released by a roller fb ⁵ ) of the gripping system fb ^V2 ) , allows the grippers fp) to grasp themselves as a result of the action of the spring fp ¹¹ ) against the claw fp ¹ ) to place a printed sheet, and c) from a lever (q) which releases the gripper fp) from the claw fp ¹ ) at the moment when the delivery table (s) reaches its innermost position. In addition 4 sheets of drawings.