DE1710524A1 - Stencil station for rotary stencil printing machines - Google Patents

Description

PATENT ADVOCATE ' ^ÜJt1

Dr. ERNST STURM '.., _T , ·, _c "

MUNICH 23 / M ₁ TtI-W / ¹

LEOPO LDSTR. 20 / 1V

Peter Zimmer in Kufstein (Austria)

Stencil station for rotary stencil printing machines

The invention relates to a stencil station for rotary stencil printing machines having a pair of parallel beams running across the blanket, to accommodate machine elements for storage or Guide, support and / or the drive of the cylinder template inserted between the two carriers.

In known stencil stations of this type levers are arranged on the pair of carriers, on which rollers for guidance the cylinder template are stored. The levers with the Guide rollers can be pivoted around the respective carrier axis, whereby an adjustment to different Solenoid diameter is made possible.

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A botation stencil printing machine should if possible Not only should it be suitable for holding cylinder stencils of various diameters, it should also allow adaptation to different template lengths; furthermore, the cylinder template inserted in the machine their position can be corrected in such a way that, for example, in the case of multi-color printing, the print images of several arranged one after the other in the direction of passage of the goods

W cylinder stencils, each of which has a specific color

φ prints, match exactly according to the pattern.

The invention is based on the object of creating a device with which this adjustment and setting the cylinder templates is facilitated. According to the invention, this is achieved in that the pair of supports on the machine frame is arranged adjustable.

fc By horizontally adjusting the pair of supports across

fe to the direction of travel of the web, a simple one succeeds Cross-repeat setting of the inserted cylinder template. By pivoting the carrier pair in a plane parallel to the printing blanket plane, the error cannot be exactly one axially parallel application of the pattern to the template can be corrected, and a height adjustment of the carrier pair may be required to adapt to different template diameters. If the for storage or for guidance, for support or for attachment

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ORiGiNAL i;: GFECTED

drove the machine elements serving the cylinder template The pair of carriers are adjustable in the longitudinal direction of the template, an adaptation to different template lengths is also possible enables «

The invention is based on the drawing by exemplary embodiments explained in more detail, without being limited thereto.

Fig. 1 shows in plan view and Pig. 2 in section according to II-II of FIG. 1 shows an embodiment of a stencil station of a rotary stencil printing machine. Pig. 3 shows in plan view and FIG. 4 in section according to IV-IV another embodiment of a stencil station.

The stencil station according to Pig. 1 and 2 comprises a pair of tone Trögerrohren 1, 2, which associated to the two opposite machines beams 3, 4 and on these ■ and each Sehablonenstation Verbindungsbailcen 3 ^f »4 are guided in the store 5 '. The pair of support tubes 1, 3 SU of a type of frame is united by the two connection bars 3 ¹ »4 ^1. On one side of the machine, the two support tubes 1, 2 are still connected by a sueätzliohee connecting piece 6. Arms 7, in which the two shafts 8, 9 are mounted, are seated on the carrier .röhren I _{1 2.} The guide rollers 10 | are on the shafts 8, 9 11, which is used to guide the cylinder shell

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Blone 12 are used, the rest of which rests between the two carrier tubes 1, 2 on the goods 14 transported by the printing blanket 13. The guide rollers 10 are displaceable along the shafts 8, 9, as a result of which, on the one hand, an adjustment to different template lengths and, on the other hand, possibly also a longitudinal tension of the cylinder template 12 can be achieved. On one shaft 8 also two gear pinion 15> 16 are fixed which serve for the transmission of movement between the two end gears 17 _f 18 of the cylinder template 12th One of the pinions 16 is displaceable and adjustable on the shaft 8.

To adjust the transverse repeat of the cylinder template 12, the pair of support tubes 1, 2 is axially displaced in the bearings 5 in that the connecting ^{piece 6 is displaced with the aid of the spindle 20 mounted on the connecting beam 3 1} and driven by the handwheel 19.

The pair of support tubes 1, 2 can also be pivoted in a plane parallel to the printing blanket plane by a small angular extent, namely in that the connecting beam 4 ¹ is displaceable in the guide bar 21 on the machine beam 4, whereby the pair of frame tubes 1, 2 revolve around the vertical axis 22 rotates. So that this is possible, the nut thread part 23 of the spindle 20 is also rotatably mounted on the connecting piece 6 about the axis 22. The bearing play of the carrier tubes 1, 2 in the bearings 5 is sufficient for

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• the necessary small Versohwenkungen the Irägerrohre 1, 2 from. In addition, the bearings 5 can have an elastically mounted lining. The connecting ^{bar 4 1} is displaced with the aid of a spindle 25 which can be actuated with a handwheel 24.

The height adjustment of the pair of support tubes takes place in the illustrated embodiment in that the W verlaufen- substantially over the whole length of the machine the machine beam 3 to be lifted or lowered 4, WO% by simultaneous height adjustment of the carrier pairs 1, 2 of all the templates stations Masohine entry. In order to adjust the height of the masohine beams 3, 4, the adjustment takes place by means of vertical threaded spindles 26, the nut threads of which are formed in worm wheels 27 which are actuated by worms 28 which sit on shafts 29, 30 running in the longitudinal direction of the machine. Both shafts 29, 30 are driven by a common drive motor 31 via an M transverse shaft 32 and bevel gears 33. |

In order to automate this height adjustment, a squat 34 is attached to the shaft 30, which one per revolution Counter 35 gives a pulse. Between the counter 35 and the motor 31 there is a circuit that turns the motor on

range of a certain, preselected and a certain height adjustment corresponding number of pulses switches off.

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The embodiment according to Pig. 3 and 4 are different differed from that according to Pig. 1 and 2 in that the template holder are designed as bridges 36, 37, which on the two support tubes 1, 2 are attached. One bridge 37 is adjustable on the carrier tubes 1, 2 and enables thus the adaptation to different template lengths and the axial support or longitudinal tension of the cylinder template 12. In addition, the structure and the adjustment device of the stencil station is according to Pig. 3 and 4 equal to that according to Pig. 1 and 2.

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Claims (9)

Patent claims: 1. Stencil station for rotary stencil printing machines with a pair of parallel carriers running across the blanket to accommodate machine elements for the storage or guidance, support and / or the drive of the ^ inserted between the two carriers Cylinder template, characterized in that the pair of supports is adjustable on the machine frame. 2. stencil station according to claim 1, characterized in that the pair of carriers transversely to the direction of passage The web is adjustable and displaceable. 3. Stencil station according to claim 1 or 2, characterized in that the pair of supports can be pivoted adjustably in a plane parallel to the printing blanket ■ plane. M. 4. Sohablonenstation according to one of claims 1 to 3, characterized characterized in that the pair of carriers is adjustable in height. 5. stencil station according to one of claims 1 to 4, daduroh characterized in that the pair of supports is framed by connecting beams arranged on the machine frame. 101842/0382 tig is connected, the two carriers being axially displaceable in bearings on the connecting beams. 6. stencil station according to claim 3> characterized in that the two carriers of the carrier pair have a further connecting piece on one side of the machine, which is firmly connected to the two carriers, on which a nut thread piece for a spindle for the axial ^ Adjustment of the carrier pair is arranged. 7. template station according to claim 5, characterized in that one of the connecting bars arranged on the machine frame is adjustable in the longitudinal direction of the machine. 8. stencil station according to claim 5 to 7, characterized in that that the connecting bar, which can be moved in the longitudinal direction of the machine, is on the ™ connection piece with the nut thread part for the axial ™ position of the pair of supports on the opposite side of the machine is arranged, and that the nut thread part on the additional connecting piece about a vertical axis is rotatable. 9. stencil station according to one of claims 1 to 8, characterized characterized that for height adjustment dee carrier pair one on both sides of the machine, essentially extending over the entire length of the machine Machine beam is arranged adjustable in height. 109842/0382 Blank page