DE371606C - Rotary rubber printing machine for printing wooden panels and other rigid materials - Google Patents

Description

GERMAN EMPIRE

[TO IB LlQTH E EK

ISSUED MARCH 16, 1923

REICH PATENT OFFICE

PATENT LETTERING

- M 371606 - CLASS 15 d GROUP 22

(C 29363 XIl] I ₅ d)

Viktor Eugene Louis Chauvette in Paris.

Rotary rubber printing machine for printing wooden panels and other rigid materials. Patented in the German Empire on July 9, 1920.

According to the Union Treaty of June 2, 1911, priority is due to this application of the application in France of July 18, 1919.

The present invention relates to a

Machine for printing on wooden panels or other rigid materials that are used for printing not in a spinning motion around you

Cylinder can be pulled. The new

Press prints after Gummiumdruckverfahren, ie by means of a transfer cylinder which is covered with a rubber layer ". It has a plate cylinder ² J ₃ of its circumference as

Farbverreibefläche is formed, a transfer cylinder lying under this and a under the latter, which is moved back and forth, which after every back and forth! What happened in Rest position remains.

• The invention is shown in an exemplary embodiment in the drawing, although it shows:
Fig. Ι a front view of the machine,

ίο Fig. 2 the corresponding side view Fig.i.

The cylinder ^ carries a pressure plate P. It is rotated by the transfer cylinder C by means of the ring gears L and 0. The cylinder C itself is set in motion by the transmission gear Q, R, S and T. The drive wheel is £ 7.

Due to the porosity of the wood, it is necessary the printing ink is very strong

ao to carry, for which it must be very thick. This is why it is on the plate cylinder a Farbverreibefläche provided, which has a twice larger surface than the Printing plate showing the lithographic drawing

as voltage P carries. This plate P therefore only takes up a third of the cylinder circumference A. When the cylinder A rotates, the plate runs past the feeder M and the adjacent inking unit E.

As the cylinder A rotates, the plate P prints on the rubber covering B attached to the cylinder C , which in turn prints the wooden panel lying on the printing table D when it rotates. The printing table D is moved in the horizontal direction in the following manner. When advancing, ie while pressing, it is brought forward by the connection with two toothed racks V, which are mounted on each side, by means of the toothed circular arcs F, the arcs of which correspond to one third of the circumference of the cylinder C. As soon as these tooth bridges have reached the end of their run, the printing table is not advanced any further.

He hits against springs and remains immobile. Another toothed arch G, which is stored next to the one arch F, on one side of the transfer cylinder, then comes into connection with a gear H, which itself rotates the gear / and the gear J, which are both mounted on the same shaft. Since the gear / is in connection with the rack K , which is mounted under the printing table, j

this returned to its first position. !

The printing table then remains immobile until the sheet F comes back, that is, by the third third of the revolution of the transfer cylinder C. This period of time is used to insert the printing piece, allowing it to hit three stops, two at the front and one at the front the side is. Since it is important to keep the wooden board immobile in order to exclude any movement during printing, it is sucked onto the printing table in a known manner. This can happen, for example, as follows. The printing table D is hollow and has holes penetrated on the surface. It is connected by a valve to a flexible tube Y , through which it is in communication with a container X. In this a vacuum is created by a pump operated by the machine. As soon as the wooden board is in its position, the valve is automatically opened by a lever arm, which creates a vacuum in the printing table and thus pneumatically holding the wooden board on the printing table. When the printing is finished, the printing table, arriving at the end of its run, actuates another valve, which lets in air and thus releases the wooden panel. Two small steel supports then lie in front of the wooden panel and hold it in place while the printing table, as it returns to its first position, slides under the wooden panel. The latter then falls on an inclined plane and comes from there onto the receiving table.

Claims (2)

Patent Claims: 1. Rubber rotary printing machine for printing wooden panels and others , rigid materials, characterized by a plate cylinder (A) designed on two thirds of its circumference as an ink distribution surface, a transfer cylinder (C) underneath and a flat, reciprocating printing table below this, which is in the rest position after every back and forth movement persists. 2. Rubber rotary printing machine according to claim 1, characterized in that 10; On the axis of the transfer cylinder, wheels (F) that are toothed on a third of its circumference and a wheel (G) that is also toothed on a third of its circumference are arranged, the toothing in the latter wheel (G) being connected to the third toothing of the former wheels, so that a third of the cylinder circumference remains toothless and the printing table comes to a standstill after every back and forth 11; passage is brought about. 1 sheet of drawings.