DE19613942B4 - painting equipment - Google Patents

Abstract

painting equipment for sheetfed rotary printing presses, consisting of a sheet-guiding Pressure cylinder (5) and a painting cylinder (16) in the so-called Siebenuhrstellung, wherein the painting cylinder (16) one with a Dipping roller (15) and a metering roller (13) forming a Lackauftragwerk Paint application roller (12) is assigned and the paint application roller (12) an on-and off device (18) and the painting cylinder (16) a Assigned to switching on and off device (17), characterized in that that the paint application roller (12) the painting cylinder (16) on the plant side assigned and the arrival and Abstelleinrichtung (18) of the paint application roller (12) as a two-stage on-demand and off-take facility with a first and Abstellhub and a the arrival and Abstellhub the painting cylinder (16) adequate subsequent second arrival and Abstellhub is formed.

Description

The The invention relates to a painting device for sheet-fed rotary printing presses according to the preamble of the claim.

• – bei Druckunterbrechung muss die Lackauftragwalze zuerst vom Offsetzylinder abgestellt werden, nachdem sich die Lackplatte freilackiert hat ist die Abstellung des Lackierzylinders vom Druckzylinder möglich;
• – bei Druckbeginn muss die Lackauftragwalze zuerst an den Lackierzylinder angestellt werden, nachdem die Lackplatte voreinlackiert wurde ist die Anstellung des Lackierzylinders an den Druckzylinder möglich.

Bogenoffsetrotationsdruckmaschinen are usually composed of several printing units or from multiple printing units and at least one designed as a paint coating coating device and a feeder and a display. The printing units consist of a sheet-guiding printing cylinder, at least one transfer drum, a covered with a rubber blanket cylinder and a printing plate covered with a printing plate cylinder and the paint towers to achieve identity, from a printing cylinder, at least one acting as a transfer drum or delivery drum and drum with a a varnish plate or a rubber blanket which acts as a varnish plate and which is identical to the offset cylinder ( DE 394 15 71 C2 ). On the paint plate by means of a Lackauftragwerkes, consisting of a coating plate contacting the paint application roller, a circulating in a trough and standing in contact with the paint application roller immersion roller and a dipping roller associated metering roller, paint applied. The connection of the center of printing form cylinder and offset cylinder of the printing unit and the connection of the centers of application roller and painting cylinder of the paint tower are arranged in printing machines with cylinders in five o'clock position in the same direction. In the case of the five o'clock position, the angle of the catheter enclosed by the cathodes of a triangle formed by the center points of the printing cylinder, the offset cylinder and the printing plate cylinder or the varnish application roller is in the direction of rotation of the printing cylinder. Due to this geometric arrangement, the arrival and Abstell movement of the plate cylinder and the procedural conditional arrival and Abstellbewegung the paint application roller over the provided with an arrival and Abstelleinrichtung eccentric mounting of the offset cylinder is feasible ( DD 243 007 A1 ). The procedural conditional on and Abstellbewegung the paint application roller must meet the following conditions

• - When pressure is interrupted, the paint application roller must first be turned off the offset cylinder, after the paint plate has been released, the shutdown of the painting cylinder from the printing cylinder is possible;
• - At the start of printing the paint application roller must first be employed on the painting cylinder, after the paint plate was pre-painted, the employment of the painting cylinder is possible to the impression cylinder.

at Printing presses whose cylinders are in the so-called. Siebenuhrstellung (Kathetenwinkel of the centers of impression cylinder, offset cylinder and plate cylinder spanned triangle is opposite to the direction of rotation of the printing cylinder) is arranged, the position of the paint application roller deviates relatively relative to the painting cylinder and the position of the printing forme cylinder relative to Offsetzylinder from each other. The procedural conditional On and off the paint application roller is not for this reason to realize more with the mentioned means.

From the DE 43 22 791 A1 a painting device is known in which the painting cylinder is arranged in the above-mentioned position to the printing cylinder. At the painting cylinder is a paint application roller, here referred to as metering, employed. This is associated with two applicator rollers. The paint application roller can be pivoted by means of a setting eccentric into positions relative to the application rollers, in which either the transfer of the coating to the surface of the metering roller is interrupted or takes place according to various delivery principles.

These solution can not contribute to the procedural and shutdown of the paint application roller in painting on printing machines to realize with seven o'clock position of the cylinder.

task The invention is therefore the creation of a painting on Presses with seven o'clock position of the cylinders when realized the procedural conditional on and off the paint application roller.

According to the invention Task solved by the patent claim.

following the invention is based on an embodiment explained in more detail.

In show the drawings

1 Sheetfed rotary printing press with paint tower

2 On and off device for applicator rollers.

In 1 is a sheetfed offset rotary press with a feeder 1 , a printing unit 2 a paint tower 3 and a display 4 shown.

The printing unit 2 contains a sheet-guiding impression cylinder 5 , a transfer drum 6 , an offset cylinder 7 , a printing plate cylinder 8th , an inking unit 9 and a dampening unit 10 , The printing cylinder 5 , the offset cylinder 7 and the plate cylinder 8th are arranged in seven o'clock position, ie the catheter angle α of the triangle formed by the centers of the printing cylinder, the offset cylinder and the printing plate cylinder is opposite to that in FIG 1 indicated by an arrow direction of rotation of the printing cylinder.

The paint tower 3 also contains a printing cylinder 5 and a transfer drum 6 , where the transfer drum 6 is designed as an output drum.

Furthermore, the paint tower contains a painting cylinder 16 which is in the bearings of the offset cylinder 7 is used. The painting cylinder 16 is a paint job 11 assigned, which from a paint application roller 12 , a metering roller 13 and one in a trough 14 revolving dipping roller 15 consists.

The painting cylinder 16 is, since it is inserted into the bearing of the offset cylinder, relative to the impression cylinder 5 arranged in a quasi seven-o'clock position, ie he would with a fik tive printing forme cylinder analogous to the printing unit 2 form a seven o'clock position.

Because in a paint tower 3 a printing form cylinder 8th does not exist is the cylinder position impression cylinder 5 / varnishing 16 referred to as quasi seven o'clock position.

The paint application roller 12 is next to the fictional printing cylinder 8th in the direction of the investor 1 ie on the plant side; in the direction of the investor 1 , the offset cylinder 7 assigned.

In 2 is the described cylinder arrangement of the paint tower in quasi seven-o'clock position including the arrival and Abstelleinrichtung for the paint application roller 12 shown.

To clarify the quasi seven o'clock position was one in printing units 2 existing and in paint towers 3 non-existent printing form cylinder 8th inserted in dashed lines.

The painting cylinder 16 is with an arrival and Abstelleinrichtung painting cylinder 17 connected.

The paint application roller 12 is an attachment and Abstelleinrichtung lacquer application roller 18 assigned.

The arrival and Abstelleinrichtung paint application roller 18 is designed as a two-stage on-and off device and includes a first pneumatic cylinder 19 and a second pneumatic cylinder 20 ,

The first pneumatic cylinder 19 serves the on and off of the paint application roller 12 from the painting cylinder 16 ; the second pneumatic cylinder 20 is a Nachführzylinder whose stroke is identical with assumed leverage of 1 with the path of the painting cylinder in the direction of paint applicator roller.

• – Betriebsart Leerlackieren Lackauftragwalze 12 wird vom Lackierzylinder 16 durch Betätigung beider Pneumatikzylinder 19; 20 abgestellt (strichpunktierte Darstellung in 2); nach dem Abstellen und dem sog. Leerlackieren der Lackplatte wird der Lackierzylinder 16 vom Druckzylinder 5 abgestellt (strichpunktierte Darstellung in 2).
• – Betriebsart Voreinlackieren/Lackieren Lackauftragwalze 12 ist durch Betätigung des ersten Pneumatikzylinders 19 bei Nichtbetätigung des zweiten Pneumatikzylinders 20 an den abgestellten Lackierzylinder 16 angestellt (gestrichelte Darstellung in 2), der Lackierzylinder 16 wird voreinlackiert, danach erfolgt durch Betätigung der An- und Abstelleinrichtung Lackierzylinder 17 und Betätigung des zweiten Pneumatikzylinders 20 die Anstellung des Lackierzylinders 16 mit angestellter Lackauftragwalze 12 an den Druckzylinder 5, wobei die Pressung zwischen Lackauftragwalze und Lackierzylinder infolge der Identität des Hubes der Lackauftragwalze und des Hubes des Lackierzylinders in Richtung der Lackauftragwalze nicht verändert wird. Damit ist die Betriebsart Lackieren erreicht (ausgezogene Darstellung in 2).

With the contact and Abstelleinrichtung paint application roller 18 the following operating variants can be realized

• - Empty varnishing mode varnish application roller 12 is from the painting cylinder 16 by actuating both pneumatic cylinders 19 ; 20 turned off (dot-dashed representation in 2 ); after stopping and the so-called. Blank painting the paint plate is the Lackierzylinder 16 from the printing cylinder 5 turned off (dot-dashed representation in 2 ).
• - Pre-lacquering / varnishing operating mode 12 is by pressing the first pneumatic cylinder 19 when not operating the second pneumatic cylinder 20 at the parked painting cylinder 16 Employed (dashed line in 2 ), the painting cylinder 16 is pre-painted, then done by actuation of the arrival and Abstelleinrichtung painting cylinder 17 and actuation of the second pneumatic cylinder 20 the employment of the painting cylinder 16 with employed paint application roller 12 to the printing cylinder 5 wherein the pressure between the paint application roller and the painting cylinder is not changed in the direction of the paint application roller due to the identity of the stroke of the paint application roller and the stroke of the coating cylinder. This completes the painting mode (solid representation in 2 ).

To adjust the pressure between the varnish applicator roller and the parked varnishing cylinder, use a first operating spindle 21 set.

The pressure between the varnish applicator roller and the employed varnishing cylinder is controlled by a second operating spindle 22 set.

1

investor

2

printing unit

3

coater

4

display

5

pressure cylinder

6

Transfer drum

7

offset cylinder

8th

Plate cylinder

9

inking

10

dampening

11

Varnishing plant

12

Lacquer application roller

13

metering

14

trough

15

dipping roller

16

varnishing

17

At- and Abstellinrichtung painting cylinder

18

At- and Abstelleinrichtung paint application roller

19

first pneumatic cylinder

20

second pneumatic cylinder

21

first operating spindle

22

second operating spindle

Claims (1)

Painting device for sheet-fed rotary printing presses, consisting of a sheet-guiding printing cylinder ( 5 ) and a painting cylinder ( 16 ) in the so-called seven o'clock position, the painting cylinder ( 16 ) one with a dipping roller ( 15 ) and a metering roller ( 13 ) a Lackauftragwerk forming paint application roller ( 12 ) and the paint application roller ( 12 ) an on and off device ( 18 ) and the painting cylinder ( 16 ) an on and off device ( 17 ), characterized in that the lacquer application roller ( 12 ) the painting cylinder ( 16 ) are assigned on the plant side and the on / off device ( 18 ) of the paint application roller ( 12 ) as a two-stage on and off device with a first arrival and Abstellhub and the arrival and Abstellhub the painting cylinder ( 16 ) is formed adequately subsequent second arrival and Abstellhub.