DE590864C - Machine for the production of multiple prints one behind the other and one next to the other of similar print images on a printing plate mounted on a cylinder - Google Patents

Description

GERMAN EMPIRE

ISSUED AIH JANUARY 12, 1934

REICH PATENT OFFICE

PATENT LETTERING

JVi 590864 CLASS 15c GROUP

Hatsujiro Hamada in Tokyo

Patented in the German Empire on January 25, 1931

The invention relates to a machine for producing multiple consecutive and juxtaposed transfer printing of similar print images on a printing plate, the is clamped on a cylinder.

On machines of this type, where the original is on a platen, has already been proposed to rotate the pattern of the original, in the axial direction Take up displaceable transfer rollers and transfer them to the pressure plate of the stationary cylinder.

The invention is now concerned with the object, also of flat original printing plates according to this principle, to produce transfers that are next to one another several times in a row, without reaching significantly larger machine dimensions and without other operational and structural defects to have to accept.

This object is achieved according to the invention in that the flat original printing plate is transverse is movable to the transmission segment and together with this in the axial direction of the transfer segment rests slidably on a carriage, which for acceptance - the original print image through the transfer segment of this inevitably in one Direction is taken, but automatically into its starting position after the print image has been accepted returns.

Further characteristics of the invention emerge from the drawing, on which an example Embodiment of the invention is shown schematically. It represent

Fig. Ι a plan view of the machine with partially cut parts,

Fig. 2 is a diagrammatic view, also partially in section,

Fig. 3 partly a front view, partly a section along the line III-III of Fig. 1, and

Fig. 4 shows a cross section along the line IV-IV of Fig. 3Γ.

The cylinder 1 carries the empty printing plate 2 to be treated. It is mounted on the shaft 3 in such a way that it can rotate with the shaft, but that it can also be rotated independently of it, so that it can be set rotatably without turning shaft 3 rotates with it. The shaft 3 is mounted in the machine frame 4. In order to achieve the desired rotatability, the disk 5 is attached to the shaft 3, which is provided with lateral projections 5 ^a , in which a worm 6 is mounted. When the disk 5 is rotated, the worm 6, which meshes with an annular worm wheel 7, is therefore carried along. This carries in its interior four bevel gears 8, which are in engagement with two bevel gears 9 and 10, of which the bevel gear 9 is attached to a projection of the cylinder 1, the other on the disc 5 (Fig. 3 and 4). So when the shaft 3 rotates, the disk 5, the worm wheel 7, the bevel gears 8 connected to it run with it

Bevel gears 9 and 10 and thus the cylinder ΐ um; But the cylinder 1 can be rotated independently of the shaft 3 by rotating the worm 6 because the bevel gears 8 to 10 form a differential gear. The pressure plate 2 rests tightly on the circumference of the cylinder 1 and is fastened in a known manner with its ends easily removable in a cylinder indentation i ^a , which extends from one end to the other end of the cylinder.

A cylinder segment 11, which has the same diameter as the cylinder 1, is arranged next to the cylinder 1 and carries a cover 12 made of rubber, rubber or the like on its circumference. The cylinder segment 11 is on the shaft 13 fastened in such a way that it can rotate with the shaft, but can also slide along it . The position of the parts to one another is such that when the cylinder 1 rotates, the elevator 12 comes into rolling contact with the pressure plate located on the cylinder 1. On the shaft 13 of the cylinder segment 11 there is also a worm wheel x6, which also rotates with the shaft 13, but can also slide along it. It is in engagement with the worm 17, which ^{is mounted in arms 14 s} of one cheek 14 ⁰ and can be rotated by means of the handwheel 18. The position of the worm wheel 16 relative to the cheek 14 ° is secured ^{by the flange i6 ffi.}

'If the handwheel 18 is rotated, it rotates the shaft 13 and thus also the shaft 3, because the gear 19 of the shaft 3 is in engagement with which is seated on the shaft 13 gear 20. The elevator 12 then rolls Cylinder segment 11 on the surface of the cylinder 1. The carriage 14 can, as mentioned, to be moved on the bed 15 in the direction of the cylinder axis 3. For this the screw 21, which can be rotated in the frame 4

■ * 5 is mounted on projections 14 ° on the underside of the carriage 14 engages and a handwheel 22 wears.

For the original printing plate 24, a carrier 23 is provided which rests on the carriage 25 and on this parallel to the shaft 13 in the longitudinal direction by means of the guide groove 23 ° and the guide rail 25 ° back and forth. slide here can. In guide grooves 23 ^ of the carrier 23 slidably grip the cheeks 14 "- of the slide 14 a, in such a way that the elevator 12 of the cylinder segment 11 in contact with the Original printing plate 24 lying on the carrier 23 comes when the cylinder segment 11 is turned by turning the handwheel 18, as Fig. 2 shows.

The carriage 25 rests on supports 27 which are fastened to the frame 4. On the supports 27, the carriage 25 can move transversely to the shaft 13 by means of the guide rails 25 ″ and the guide grooves 27 ^{s (FIG. 2).} It is held in its forward rest position by the toothed sectors 28, cooperating with gear racks 25 ^d, which are provided on the underside of the carriage 25th The toothed sectors 28 sit on the shaft 29 and are under the influence of helical springs 30, so that when the carriage 25 is moved backwards, the springs 30 are tensioned, which therefore move the carriage 25 back into its original front position when released.

On the shaft 13, after their ends to also sit toothed sectors 26, each of which cooperates with a rack ^b $ 2, which are arranged at the side edges of the carriage 25th On the side of the toothed sectors 26 facing towards the center of the machine, there is a respective stop 26 "in such a way that it comes together with a corresponding stop 25 ° on the corresponding side of the racks 25" before the sector teeth engage in the teeth of the racks 25 ¹ takes place, for the purpose that the engagement of the teeth when rotating the sectors 26 proceeds properly.

When the shaft 13 is rotated by the handwheel 18, the toothed sectors 26 are initially rotated towards the front; The carriage 25 with the carrier 23 and the original printing plate lying on it is therefore moved backwards as soon as the toothing of the sectors 26 engages in the racks 25 ″ as it continues to rotate. The elevator 12 then comes into contact with the original printing plate 24; After the cylinder segment 11 has run over the original printing plate 24, the pattern of the sectors 26 disengages from the toothed racks 25 ^{6 again when the shaft 13 is rotated further} the carriage 25 with the original pressure plate 24 automatically returns forwards as a result of the action of the springs 30. If the cylinder segment 11 is now rotated further, the elevator 12 rolls on the cylinder surface, ie on the pressure plate 2, the cylinder ι over the Gears 19 and 20 is rotated from the shaft 13, so that the pattern of the elevator 12 on the printing plate 2 over he wears.

The position of the cylinder segment 11 against the cylinder 1 can move in the longitudinal direction for the purpose of cooperation by means of the handwheel 22 of the shaft 21 can be adjusted; by the screw 6 can be described in the above Way the position of the cylinder 1 in the circumferential direction with respect to the cylinder segment

Ii to be changed. It can be seen that in this way, by way of the offset method of an original printing plate from a pattern several times in a row and side by side regularly can be transferred to a second printing plate.

Both on the shaft 3 of the cylinder 1 as Also on the shaft 13 of the cylinder segment 11 there is a graduation

xo disk 31 or 32. On a hub of the cylinder ι sits a pointer 33, while a pointer 34 adjustable by means of the screw 35 on the Shaft 13 is arranged. These display devices are used to determine the relative position the cylinder 1 and cylinder segment 11 - to make visible.

Claims (4)

Patent claims: i. Machine for the production of multiple consecutive and adjacent Transfer printing of similar print images on a printing plate clamped on a cylinder, in which a rotatable, axially displaceable transfer segment has the pattern of an original printing plate receives and transfers to the pressure plate of the stationary cylinder, thereby characterized in that the planar original printing plate (24) is transverse to the transfer segment (11) is movable and together with this rests displaceably in the axial direction of the transfer segment on a carriage (25), which is used to remove the original print image through the transmission segment (11) of this inevitably in one direction is taken, but automatically into its starting position after the print image has been accepted returns. 2. Machine according to claim 1, characterized in that both on the toothed segments (26) connected to the transmission segment (11) and on the toothings (25 ^s ) of the carriage (25) for the carrier (23) holding the original printing plate (24) ), with which they cooperate, additions suggest ⁴ S (26 ^s, 25 ° are provided), which lie against each other before the engagement of the teeth takes place. 3. Machine according to claim 1 and 2, characterized in that the carriage (25) for the original printing plate (24) holding the carrier (23) by spring-loaded (30) standing tooth segments (28), which in on the underside of the carriage ( 25) seated racks (25 ⁰ ) engage, is moved back into its starting position when the toothing between the carriage (25) and the toothed segments (26) of the transmission segment (11) is out of engagement. 4. Machine according to claim 1 to 3, characterized by display devices, which the position of the printing plate cylinder (1) with respect to the transfer segment (11) and from two graduated discs (31, 32) and pointers (33, 34) are made in pairs next to each other on the two cylinder shafts (3, 13) sit and of which the pointer (34) on the shaft (13) of the transmission segment is adjustable. 1 sheet of drawings