DE262281C

DE262281C -

Info

Publication number: DE262281C
Application number: DENDAT262281D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- M 262281 -■ KLASSE 15 <Z. GRUPPE- M 262281 - ■ CLASS 15 <Z. GROUP

HEINRICH BORCHERS in HAMBURG.HEINRICH BORCHERS in HAMBURG.

Patentiert im Deutschen Reiche vom 25. November 1910 ab.Patented in the German Empire on November 25, 1910.

Es sind bereits Farbband- und Schablonendruckmaschinen bekannt geworden, welche mit selbsttätigen Bogenanlegern versehen sind, bei denen aber keine Vorrichtung vorhanden ist, um den Bogenstapel nach Ergreifen des obersten Bogens dem Einfluß der Bogenhebevorrichtungen zu entziehen, weshalb bei diesen Anlegern mitunter auch mehrere Blätter gleichzeitig angelegt werden.There are already ribbon and stencil printing machines known, which with automatic sheet feeders are provided, but where no device is available, around the sheet pile after gripping the top sheet under the influence of the sheet lifting devices to withdraw, which is why these investors sometimes have several sheets at the same time be created.

ίο . Demgegenüber hat die vorliegende Erfindung eine Bogenzuführvorrichtung zum Gegenstand, durch welche die Bogen einzeln der Maschine zugeführt werden, indem die übrigen auf dem Bogenstapeltisch liegenden Bogen dem Einfluß der Bogenhebevorrichtung entzogen werden, während beim Erschöpfen des Papierstapels eine selbsttätige Ausschaltung der Bogenzuführvorrichtung erfolgt. Das wird erreicht, indem der in bekannter Weise bewegliche Bogenstapeltisch während der Drehung der Trommel gehoben und gesenkt wird und auch eine gleichartige Bewegung der Druckwalze erfolgt. Durch das allmähliche Abnehmen des Bogenstapels werden dabei infolge höheren Hubes des Bogenstapeltisches Vorrichtungen in Tätigkeit versetzt, welche schließlich eine Ausschaltung der die Bogen anlegenden und gegen die Trommel drückenden Mittel bewirken.
Die Zeichnung veranschaulicht die Erfindung, welche hier an einer Druckmaschine angeordnet dargestellt ist.ίο. In contrast, the present invention relates to a sheet feeding device by means of which the sheets are fed individually to the machine by removing the remaining sheets lying on the sheet stacking table from the influence of the sheet lifting device, while the sheet feeding device is automatically switched off when the paper stack is exhausted. This is achieved in that the sheet stacking table, which can be moved in a known manner, is raised and lowered during the rotation of the drum and a similar movement of the pressure roller also takes place. As a result of the gradual removal of the stack of sheets, devices are put into action as a result of the higher stroke of the sheet stacking table, which finally cause the means which apply the sheets and press against the drum to be switched off.
The drawing illustrates the invention, which is shown here arranged on a printing press.

Fig. ι zeigt die Zuführvorrichtung in Seitenansicht, Fig. Ι shows the feed device in side view,

Fig. 2, 3, 4 die bekannte Bewegung des Bogens in schematischer Darstellung.2, 3, 4 the known movement of the sheet in a schematic representation.

In einem Rahmen 1 liegt die Trommel auf der Achse 2^a, beiderseitig mit Exzentern versehen, deren Stangen 8^a mit dem Hebelpaar 9 in Verbindung stehen. In diesen Hebeln 9 ist die Druckwalze 10 gelagert, so daß sie periodisch von der Drucktrommel durch die Exzenter 8 bzw. deren Stangen 8^a entfernt und durch Zug der Federn 26 wieder angezogen wird. Die Stellung der Achse der Walze 10 zur Trommel wird durch die Schrauben 26^Λ am Rahmen 1, die Gegendruckkraft durch die Federn 26 bestimmt. Es sind also Lage und Druckkraft der Walze 10 beiderseitig regelbar.In a frame 1, the drum 2 is on the axis ^a, mutually provided with eccentrics, the rods ^8a are in communication with the pair of levers. 9 In these levers 9, the pressure roller 10 is mounted so that it is periodically removed from the printing drum by the eccentric 8 or the rods 8 ^a and tightened again by pulling the springs 26. The position of the axis of the roller 10 relative to the drum is determined by the screws 26 ^Λ on the frame 1, the counter-pressure force by the springs 26. The position and pressure force of the roller 10 can therefore be regulated on both sides.

Ferner sitzt auf der Achse 2^a eine Segment-Scheibe 11, die auf einen mit einer Rolle ausgerüsteten Hebel 12 einwirkt. Die Rolle läuft auf dem Umfang der Scheibe 11 und wird gegen sie durch die Feder 13 gedrückt, welche dadurch den Hebel 12 stets nach oben zieht. An dem Hebel 12 sitzt eine Stange 14, welche außer durch ihre Aufhängung noch durch eine Feder 15 mit ihm verbunden ist. Die Ruhestellung der Stange 14 wird von der am Rahmen sitzenden Stellschraube 17 bestimmt. Die Gq Stange 14 hat unten einen Zahn Ι4^α, welcher in einen Zahnbogen 19 des Bogenstapeltisches 20 eingreift, also bei der Abwärtsbewegung des Hebels 12 den Papiertisch niederdrückt. Der Bogenstapeltisch, bei 21 gelagert, hat das Bestreben, durch die Feder 23 sich gegen die ^Furthermore, a segment disk 11 is seated on the axis 2a and acts on a lever 12 equipped with a roller. The roller runs on the circumference of the disc 11 and is pressed against it by the spring 13, which thereby always pulls the lever 12 upwards. On the lever 12 there is a rod 14 which, in addition to its suspension, is also connected to it by a spring 15. The rest position of the rod 14 is determined by the adjusting screw 17 located on the frame. The Gq rod 14 has a tooth Ι4 ^α at the bottom, which engages in a toothed arch 19 of the sheet stacking table 20, that is, when the lever 12 moves downward, it depresses the paper table. The sheet stacking table, stored at 21, has the tendency to by the spring 23 against the

Claims

To put sheet lifting roller 24, which receives a continuous rotation from the cord pulley 25. The mode of operation is as follows: When the drum 2 rotates, the levers 9, in which the pressure roller 10 rests, are moved up and down with the aid of the eccentric 8 so that the latter rests temporarily against the drum. At the same time, the lever 12 is guided up and down by the segment disk 11, so that during the downward movement the rod 14 engages with the tooth 14 ″ in the dental arch 19 and depresses the sheet stacking table 20 after the sheet lifting roller 24 has lifted a sheet on the sheet stacking table in a known manner When the roller 24 is rotated further, the sheet lies over it and its end reaches between the drum 2 and the pressure roller 10, which now press against each other so that the sheet is printed and counted 12, the projection 16 then pushes against the adjusting screw 17, so that the rod 14 is swung out to the right in order to emerge from the dental arch 19. The spring 15 then pulls the rod 14 to the left again during the subsequent downward movement, so that the tooth 14a again engages in the dental arch 19 and again depresses the sheet stacking table 20. This means that when the sheet supply is exhausted, an automatic stripping process processing of the sheet feeding device takes place, whereby the pressure roller is also protected from soiling, the following device is made: The levers 9, which are pulled up by the springs 26, have pins 27 at the end, via which hooks 28 arranged on both sides can grip when the levers 9 are in the low position, and the lever 14 also has a pin 14 * at the bottom, over which a hook 28'T can grip (also in the low position) when the rod 29 carrying these two hooks moves by the action of a spring 30 shifts left. The displacement is prevented as long as a hook 32 of the rod 29 is in engagement with a hook lever 31. This hook lever, movable in the bearing 18, comes with its hook or with the adjusting screw 33 sitting on it into engagement with a pin zoa on the sheet stacking table 20 as soon as the sheet supply is running low, since the table is then lifted higher by the spring 23 , so 5; that he lifts the lever 31, whereby the tooth 32 comes free. Immediately the hooks 28 grip over the pins 27 and hooks 28 ″ over the pins 14 ^ of the rod 14, thus holding down the pair of levers 9 and also the rod 14 6 <. This ensures that neither the pressure roller 10 can press against the drum, The sheet lifting roller 24 still comes into contact with the table or the sheets that have remained on it. 6; The following should also be said about the effect of the roller 24: When the sheet stacking table or the sheets lying on it are pressed against the lifting roller 24, the sheets are pushed against each other (see Fig . 2, 3, 4) rolled, and since 7c tends to pull off more than one sheet through adhesion, the table must be pressed down so that the next sheet b (or several adhering sheets) can come loose by this (b) then 7; again stretches and only one arc α is lifted from the lifting roller 24, namely the top one. Godfathers τ-An Proverbs:

1. Sheet feeding device for ribbon and stencil printing machines with a sheet lifting roller, characterized in that the sheet stacking table (20) after each lifting of the topmost Arc through the lifting roller (24) through one of a segment disc (11) of the Drum shaft controlled rod. (14) is lowered by the latter with an appendix (14 ") presses against a toothed arch (19) of the sheet stacking table (20).

2. sheet feeding device according to claim I, characterized in that at Exhaustion of the sheet supply on the sheet stacking table (20) due to the larger stroke of the the latter (20) a spring-influenced locking rod (29) is released, which with two Hook (28, 28 ") is equipped, one (28) of which the carrier (9) of the printing roller io < (10) locks in the lowered position while the other hook (28 ") locks the rod (14) so that the paper feed is turned off.

1 sheet of drawings.