DE60422C - Rotary high-speed press - Google Patents

Description

IMPERIAL

PATENT OFFICE.

CLASS 15: printing,

The present invention relates to a rotary printing press, of which FIG the side view shows while

Fig. 2 the tape guide and

Fig. 3 to 6 illustrate the sections of the individual cylinders and the drying apparatus.

Fig. 7 shows the release and release of the pressure cylinders α and a *, as well as the braking device of the same.

As can be seen from Fig. 1, the main parts of the machine, apart from the usual drive mechanisms, consist of the two printing cylinders α and a ¹ , the two typesetting cylinders b and E ?, the two inking units, the drying apparatus, the dirt cylinder with cleaning rollers and the tape guide.

As far as the two pressure cylinders are concerned, the same as can be seen from FIGS. 4 and 5 is similar to that of the ordinary high-speed press, while the two set cylinders are similar to those on rotary machines.

The drying apparatus (Fig. 6) consists of a hollow cast iron box in which three gas pipes are drawn through the length, or on which, if purified petroleum is burned, three burners are screwed, which can be precisely regulated.

The dirt cylinder (Fig. 3) consists of a cylinder with an opening on which A jig is attached to each side to pull up 10 to 12 oil bows (or pinch) to be able to.

The cleaning device consists of two iron rollers, one with a soft one Fabric covered; the same are on top of each other, the top roller with the Dirt cylinder comes into contact while the lower roller is in a basin or Container runs, which is filled with powdered soapstone or the like.

The ribbon line (Fig. 2) consists of one Number of tapes that can be placed depending on the format and have the purpose of the front printing through the dryer, the cleaning cylinder and the reverse printing cylinder to feed.

Fig. 7 shows the mechanisms of the two pressure cylinders which are necessary for the same in and out of the typesetting cylinder, as with the ordinary letterpress press.

The mechanism is as follows:

On the two pressure cylinders are the two tooth segments s and s ^l , which are fastened to the cylinder by means of screws and in which two tooth segments ^. and ^ ¹ intervene. These two tooth segments \ and \ ^l are connected to the eccentrics, which are located on the main shaft, by means of a tie rod. By means of these eccentrics and tie rods, the segments 1 and ^{1 are set} in an oscillating motion, so that the two printing cylinders are rotated and the planed surfaces on the toothed wheels of the printing cylinders come out of their position. The gears of the two printing cylinders then mesh with the gears of the rotating set cylinders, turning them

the printing cylinder until the planed surfaces are again facing the wheels of the set cylinder. During this time, the two toothed segments \ ^ ¹ and the Excenterbewegung virtue of the main shaft again swung back so much, that they returned to the two toothed segments s and can engage s ^first At the end of the movement the braking device also comes into action to arrest the movement of the two pressure cylinders.

The standstill of the pressure cylinder is necessary, so that each time the grippers of the two Printing cylinder can hold another sheet in order to print it, since only a few Sheets can be created and printed, as is done with the usual high-speed press.

As can now be seen from the foregoing; is therefore a periodic one The printing cylinder must be driven because every single sheet is applied to this machine must be, as with ordinary high-speed presses. . ■

As for the operation of the machine, the same is as follows:

The sheet is applied to the application apparatus on the straight printing cylinder α , as on the usual high-speed press, while idle sheets are now applied to the perfecting cylinder. Then the grippers close, the perfecting cylinder make one revolution and then stand still again, on the other hand the two typesetting cylinders remain constantly in motion. At the same time, the cleaning cylinder turned, as did the entire belt system.

It therefore make the sentence cylinder two revolutions, while the face and face Perfecting cylinder only rotates once.

The straight printing sheets now take the path prescribed by the ribbons, namely in such a way that the second sheet runs through the dryer while at the same time the fourth arc goes over the cleaning cylinder; accordingly the first sheet opens the second feed table and is brought into its correct position by a girl, when the tenth sheet is placed on the straight printing cylinder.

The cleaning rollers clean the oil sheet on the cleaning cylinder every time Rotation of the same, so that it does not get smeared on the next straight printing sheet can (or the same smeared), it is therefore the dirt sheet or in this arrangement the dirt roller is saved, and peeling off is also excluded.

Claims (1)

Patent claim: A high-speed rotary press with two constantly rotating typesetting cylinders bb ^l and two periodically stationary printing cylinders aa ^l , in which double-sided printing of individual sheets is effected in such a way that the sheet between the first pair of cylinders α and b receives the straight printing, then by means of a correspondingly periodically moving ribbon line passed through a drying apparatus and a dirt cylinder and then fed to the second pair of cylinders a ¹ and b ^x for generating the reverse printing on such a long path that smearing of the front printing is excluded. In addition 3 sheets of drawings.