EP1276616A1

EP1276616A1 - Device for providing a cylinder with a packing and registers

Info

Publication number: EP1276616A1
Application number: EP01937968A
Authority: EP
Inventors: Volker Gerold Rauh
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2000-04-28
Filing date: 2001-04-04
Publication date: 2003-01-22
Also published as: DE10020910A1; AU6375201A; DE10020910B4; US20030101886A1; US6732650B2; WO2001083215A1

Abstract

The invention relates to a device for providing a cylinder with a packing and registers. For positioning register-containing packings (8) on the peripheral surface (4) of cylinders (1) of a rotary printing machine, stops or register pins (12) are used on corresponding fitting strips or supports that are fastened in or on the channel (2) that receives the packing. It is disadvantageous to fasten the pins or fitting strips from the channel side if one wishes to obtain channel openings that are as narrow as possible. The aim of the invention is therefore to allow the register stones to be immobilized against axis-parallel changements of positions without the need of accessing them from the peripheral surface of the cylinder. To this end, the position of the register stones can be changed in the axis-parallel direction of the cylinder and the register stones can be held by a clamping device (13) that can be actuated from the front face of the cylinder.

Description

description

Devices for registering winding of an elevator on a cylinder

The invention relates to devices for register-based winding of an elevator onto a cylinder according to the preamble of claims 1 or 3.

From DE 42 41 588 C2, a side register system for printing forms in an axially parallel gap of the cylinder is known, recesses at the bent ends of the printing form interacting with register pins arranged in the gap. The register pins are firmly connected to insert strips, which are arranged axially parallel in the channel, one above the other, and are individually axially displaceable relative to one another and relative to the cylinder. The displacement takes place for the purpose of lateral adjustment of the printing form in each case via a threaded bolt arranged on the end face of the cylinder, the thread length of which defines the adjustment path.

In a similar manner, DE 197 57 895 C2 shows a one-piece device, but the insert strips are arranged next to one another in the gap and the adjustment range is enlarged by possible intermediate layers between the strip and the support of the screw arranged on the end face.

EP 04 90 179 A1 shows a register part which is detachably arranged on an insert bar and which can be displaced relative to the cylinder-fixed insert bar for adjustment by means of eccentric bolts. To lock against unintentional shifting, the register part, which is provided with elongated holes, is held in place by screws on the base of the insert strip. The cylinder jacket releases and clamps as well as the adjustment through the channel opening. In a similar manner, loosening and clamping in EP 05 35 502 B1 takes place radially by means of screws which are countersunk in the insert strips which are adapted to the curvature of the cylinder jacket. DE 196 00 071 C1 discloses a device for register-oriented winding of an elevator onto the outer surface of a cylinder. The register stones are clamped coming from the lateral surface due to the friction between the end of the register stone itself, which is designed as a conical seat, and a recess in a base body fixed on the cylinder body. The register stones can be inserted discontinuously in different recesses or base bodies in the axial direction.

A device is known from US 54 19 248 A, wherein essentially annular register parts are freely rotatably mounted on an actuating shaft of a tensioning device, and each can be frictionally fixed in the channel by means of a spreading device to be actuated from the channel.

The invention has for its object to provide devices for register-based winding of an elevator on a cylinder.

The object is achieved by the features of claims 1 or 3.

The advantages that can be achieved with the invention are in particular that a variable arrangement and number of register parts in a channel can be arranged almost over the entire length of a bale or variably within the channel over the width of the printing material web or the printing form, regardless of whether it is is a printing press with two, four or even more printing plates or plates arranged side by side in the longitudinal direction.

The axial adjustment path for the register stones is independent of an axial adjustment path of an adjustment spindle or clamping device which can be operated on the end face and is not permanently connected to this.

The continuous, over almost the entire length of the barrel of the cylinder or over The width of the printing path that can be used for the printing form enables adjustment of the register parts to, for example, other web widths of the paper or other printing form formats, for example by simply moving them, without having to insert new parts, in addition to an adjustment in the narrow setting range. The relative, axially parallel, but independent displacement of two or more register parts to one another is also of great advantage. The simple machine and customer-specific positioning and configuration of the register parts on site is particularly advantageous without narrowly defined basic control areas having to be taken into account during the manufacture or assembly of the ducts, even for different series or models.

In a simple manner, the shape and dimensions of the device can be adapted to channel geometries or register devices of existing printing machines for special embodiments, so that retrofitting or retrofitting is possible. It is also possible to replace register parts of different dimensions, to remove them or to equip them in already assembled machines.

Particularly advantageous for cylinders with narrow axially extending channels for receiving the printing forms is that the clamping or loosening of the register parts from outside the printing width of the bale, for. B. from the front of the cylinder. The opening of the channel in the circumferential direction can be kept as narrow as is required, for example, for the insertion of the printing forms, without taking into account any fastening or adjusting means that must be accessible via the channel. The gap width is independent of tools or means for actuating the clamping device. An interruption of the lateral surface of the cylinder, and thus a restriction of the pressure range, for example by countersunk screws spaced from the channel in the circumferential direction, is also avoided.

An embodiment of the invention is shown in the drawing and is in following described in more detail.

Show it:

Figure 1 is a schematic representation of the device for register-based winding an elevator on a cylinder.

2 shows a plan view of a region of a printing form with a recess;

3 shows a side view of a register stone;

4 shows a longitudinal section through the device for register-oriented winding of an elevator onto a cylinder from a view parallel to the channel A.

A cylinder 01, for example a forme cylinder 01 of a rotary printing press, has on its circumference at least one channel 02 extending in the axis-parallel direction with an opening 03 to the lateral surface 04 of the cylinder 01, which is used to receive the ends 06; 07 one or more elevators 08, for example the beveled ends 06; 07 of printing forms 08. In the example, the cylinder 01 is a double-wide forme cylinder 01, i.e. H. in the longitudinal direction of the cylinder 01 on its bale with four printing forms or newspaper pages next to each other, executed.

The forme cylinder 01 has a recess 09, for example a bore 09, in its interior, running in the axis-parallel direction and connected to the channel 02, in which the device for register-wise winding of an elevator 08 on a cylinder 01 is arranged. Channel 02 and bore 09 can be made almost continuously over the entire length of the barrel 01 cylinder. However, two channels 02 and bores 09 can also extend almost over half the length of the bale and possibly in the circumferential direction of the cylinder 01, for example by 180 ° be offset from each other.

In an advantageous embodiment, the channel 02 is designed as a narrow slot 02, i. H. a slot 02 with a width b02 in the circumferential direction of the cylinder 01, which in the area of the lateral surface 04 of the cylinder 01 is slightly larger than a double thickness d08 of the printing form 08 (e.g. b02 = 1 mm) and its opening 03 to the lateral surface 04 has a width b03 of, for example, b03 <3 mm. It extends secant with respect to the lateral surface 04 of the cylinder 01, advantageously on the side of the leading end 06 of the printing form 08 at an acute angle α (for example 20 ° <α <50 °).

The arranged in the bore 09 device for register-oriented winding of an elevator 08 on a cylinder has at least one register part 12, z. B. a register block 12, and a cooperating with this clamping device 13 which extends in the bore 09 in the axis-parallel direction and parallel to the channel 02. l.d.R. several register stones 12 are arranged, for example for the alignment of several printing forms 08 lying next to one another, each with a width b08. In this case, these are arranged side by side in the bore 09 in the longitudinal direction. Advantageously, the register stones 12 and the clamping device 13 are arranged on a support bar 14 which also extends in the longitudinal direction of the bore 09. The support bar 14 can against axial movement and / or pivoting a fuse 16, z. B. have a screw or a pin.

Register stone 12 and clamping device 13 are arranged on the carrier bar 14 or in the bore 09 in such a way that a surface 17 of the register stone 12 with a surface 18 of the clamping device 13 running in the axis-parallel direction and a surface 19 of the register stone 12 facing away from the surface 17 with a surface 21 of the carrier strip 14, which extends in the axis-parallel direction, acts together in a force-locking manner. The register block 12 is in the non-clamped state relative to the clamping device 13 and Carrier bar 14 arranged parallel to the channel 02 changeable. On its surface 22 facing the channel 02, the register stone 12 has a projection 23, for. B. a pin 23 or a nose, which cooperates with a recess 24 in the leading end 06 of the printing forme 08 form-fitting with respect to an axially parallel displacement. The register stone 13 can be designed as a one-piece T-piece, the shape of the projection 23 and that of the recess 24 being matched to one another in a suitable manner. The register block 12 advantageously has a width b12 which is greater than the width b02 of the channel 02, so that when the cylinder 01 rotates, the register blocks 12 are secured against radial ejection by the centrifugal forces generated.

The clamping device 13 has an adjusting means 26 which is actuated by the end face 27 of the cylinder 01 and, as part of a transmission, for example a rotational movement about an axis D running in the longitudinal direction of the cylinder 01 or a translation in the axis-parallel direction into a translation of the surface 18 in formed a direction perpendicular to this axis D. The adjusting means 26 can be an eccentric, cam or profile shaft with a spiral cross section or a threaded spindle, by means of which a wedge connection is made.

The clamping device 13 is designed in the exemplary embodiment as a wedge connection, which via the adjusting means 26, for. B. a threaded spindle 26 can be actuated from the end face 27 of the cylinder 01. It essentially consists of a clamping strip 28 which has the surface 18 and which has a recess 31 on a surface 29 which extends away from the surface 18 and extends in the longitudinal direction, a ball 32 arranged in the recess 31 and the threaded spindle 26 which in a recess 31 and an end face 33 of the terminal block 28 connecting bore 34 is arranged. The bore 34 is at least partially designed with an internal thread and receives the threaded spindle 26. This has, for example, an internal hexagon 36 at its first end and projects with its second end 37 into the recess 31 at least in the clamped state and acts with the ball 32 together.

On its side remote from the end face 33, the recess 31 has an inclined surface 38 which opens towards the surface 29 and opens in the direction of the center of the cylinder 01. This surface 38 interacts with the ball 32 and the cylinder-fixed surface 39 of the bore 09 as a wedge.

Instead of the ball 32, another pressure piece 32, which cooperates with the surface 38 and the cylinder-fixed surface 39 of the bore 09, can be arranged. The inclination of the surface 38 can also be omitted if the pressure piece 32 is wedge-shaped. The threaded spindle 26 as the adjusting means 26, the pressure piece 32 and at least one inclined surface 38 arranged on the pressure piece 32 or the clamping strip 28 together form in the present exemplary embodiment the gear which converts the axial movement into a movement perpendicular thereto. It is advantageous in the embodiment in the manner described that a fine transmission ratio can be set by the choice of the thread pitch of the threaded spindle 26 and by the inclination of the surface 38, and in addition a frictional connection via the thread against unintentional rotation of the threaded spindle 26 can be achieved. In order for the ball 32 to run securely on the surface 38 in the direction of the end face 33 of the clamping strip 28 when the clamping device 13 is released, a spring 41 can be arranged in an axially parallel channel 42 in the surface 38.

It is advantageous to arrange the recess 31 and the pressure piece 32 which is pressed against the surface 39 of the bore 09 in the longitudinal direction of the cylinder 01 between two register stones 12. In the example, the cylinder 01 has two clamping devices 13, each of which can be actuated on the end face, symmetrically to its plane of symmetry S, a total of four register stones 12 are arranged along the length of the bale in the through hole 09 on the through support bar 14 (FIG. 3 shows half of the symmetrical arrangement). If the clamping device 13 and the register stones 12 are not arranged on a support bar 14 but rather directly in the correspondingly shaped recess 09, the surface 19 in the clamped state interacts directly with the surface 39 of the recess 09.

The adjusting means 26 can, for example, also be designed as a camshaft which is mounted in the bore 34 without a thread. However, the embodiment as a threaded spindle 26, which has a cam on its end 37 protruding into the recess 31, is advantageous with regard to a frictional engagement against unintentional resetting of the adjusting means 26. The pressure piece 32 and the inclined surface 38 can be omitted here.

It is important, among other things, that the clamping device 13 is to be actuated from its end face 33, or at least from outside the printing width of the bale, and that the clamping strip 28, when the actuating means 26 is actuated, has a movement almost perpendicular to the longitudinal direction of the bore 09 and / or force component, holding the register stones 12 frictionally between them and a cylinder-fixed surface 21 (or the surface 39 of the bore 09) against axially parallel displacement. In the released state, however, the register stones 12 can be changed or removed independently of one another in the direction parallel to the axis, without the entire clamping strip 28 or carrier strip 14 having to be moved axially. The clamping device 13 and the register stones 12 are moved relative to one another when the register stones 12 are adjusted in the longitudinal direction.

The clamping device 13, in particular the actuating means 26, can also be provided via a corresponding gear (eg bevel gears; not shown) from the non-printing edge area from the lateral surface 04, e.g. B. in the immediate vicinity of the end face 27, can be actuated.

In the circumferential direction, the front end 06 of the printing form 08 can face Surface 22 of the register block 12 form a stop which can be adjusted via the height h43 of a base 43 or the length I23 of the projection 23. A basic setting in the circumferential register can be selected by using register blocks 12 of different dimensions.

The functioning of the device for register-oriented winding of an elevator 08 onto a cylinder 01 is as follows:

In the clamped state, the ball 32 is pressed in the direction of the center of the cylinder 01 between the surface 39 of the bore 09 and the inclined surface 38 and thus presses the clamping strip 28 in one direction with at least one component normal to the surface 39 of the bore 09 , The register stones 12 are thus frictionally connected between the surface 21 of the support bar 14 on the one hand and the surface 18 of the clamping bar 28 on the other side against parallel displacement.

To adjust the device, for example to change the relative spacing of the register stones 12 from one another, the threaded spindle 26 which can be actuated from the end face 27 of the cylinder 01 is pivoted in such a way that the frictional engagement between the terminal strip 28, register stones 12 and carrier strip 14 is released and the register stones 12 against axially parallel displacement are released. For example, by means of a gauge (not shown) introduced into the channel 02, the distances between the register stones 12 can be readjusted. Subsequently, the register stones 12 are again frictionally fixed in their new position by turning the threaded spindle 26. Particularly in the case of double-width cylinders 01, that is to say cylinders 01 which can be occupied in the longitudinal direction with four printing forms 08 lying next to one another for one lying or standing newspaper page, a change in the position of the register stones 12 in the longitudinal direction of the cylinder 01 by half the width b08 is, for example Elevator 08 is required when converting from simple printing forms 08 to so-called panorama plates with an almost double width. An exchange, removal or additional equipping of the device with register stones 12 is also possible in a simple manner, either by loosening the register stones 12 on the front side after loosening the threaded spindle 26, or after additionally releasing the fuse 16, the entire, at least from the terminal strip 28 and register stones 12 existing device from the bore 09 is pulled from the end of the cylinder 01.

LIST OF REFERENCE NUMBERS

01 cylinder, forme cylinder

02 channel, slot

03 opening (02)

04 lateral surface (01)

05 -

06 end, leading (08)

07 end, trailing (08)

08 elevator, printing form

09 recess, bore (01)

10 -

11 -

12 register part, register stone

13 clamping device

14 support strip

15 -

16 fuse

17 surface (12)

18 surface (13)

19 surface (12)

20 -

21 surface (14)

22 surface (12)

23 projection, pin (12)

24 recess (08)

25 -

26 adjusting means, threaded spindle (13)

27 end face (01)

28 terminal block (13) 29 surface (28)

30 -

31 recess (29)

32 ball, thrust piece

33 end face (28)

34 hole (28)

35 -

36 hexagon socket

37 end (26)

38 surface, inclined (31)

39 area (09)

40 -

41 spring (28)

42 channel (28)

43 socket (12)

b02 width (02) b03 width (03) b08 width (08) b12 width (12) d08 thickness (08)

h43 height (43)

I23 length (23)

A axis D axis S plane of symmetry

α angle

Claims

Expectations

1. Device for register-oriented winding of at least one elevator (08) on the lateral surface (04) of a cylinder (01) of a rotary printing press, the device comprising at least one register block (12) which can be changed in the longitudinal direction of the cylinder (01) and a clamping device (13) for has the register block (12), the clamping point of which is arranged within the barrel of the cylinder (01), and by means of which the register block (12) can be fixed against a change in position in the longitudinal direction of the cylinder (01), characterized in that the clamping device (13) from outside the printing width of the barrel of the cylinder (01) is actuatable.

2. Device according to claim 1, characterized in that the register stone (12) can be continuously changed in position by at least half of a width (b08) of the elevator (08) extending in the longitudinal direction of the cylinder (01).

3. Device for register-oriented winding of at least one elevator (08) on the lateral surface (04) of a cylinder (01) of a rotary printing press, the device comprising at least one register stone (12) and the elevator (08) extending in the longitudinal direction of the cylinder (01 ) extending width (b08), characterized in that the register block (12) in the longitudinal direction of the cylinder (01) can be continuously changed in position in at least half of the width (b08) extending in the longitudinal direction of the cylinder (01) ,

4. The device according to claim 3, characterized in that the register block (12) interacts with a clamping device (13) which can be actuated from outside the printing width of the cylinder (01) and by means of which the register block (12) counteracts a change in position in the longitudinal direction of the cylinder (01) can be fixed, and the clamping point is arranged inside the barrel of the cylinder (01).

5. Device according to claims 1 or 3, characterized in that the device has at least two register stones (12) which are arranged side by side in the longitudinal direction of the cylinder (01).

6. Device according to claims 1 or 3, characterized in that a plurality of register stones (12) are arranged to act together with a single clamping device (13).

7. The device according to claim 1 or 4, characterized in that the clamping device (13) from the end face (27) of the cylinder (01) can be actuated.

8. The device according to claim 1 or 4, characterized in that the register stone (12) in the longitudinal direction of the cylinder (01) is independent of a movement of the clamping device (13) in the longitudinal direction of the cylinder (01) in its position can be changed.

9. Device according to claims 5 and 6, characterized in that at least two clamping devices (13) are arranged side by side in the longitudinal direction of the cylinder (01).

10. The device according to claims 1 or 4, characterized in that the clamping device (13) has a with the register block (12) cooperating clamping strip (28) and an adjusting means (26) by means of which the clamping strip (28) in an almost is perpendicular to the longitudinal direction of the cylinder (01) against the register stone (12) or can be removed from this.

11. The device according to claim 10, characterized in that the clamping device (13) as a wedge connection with respect to the terminal strip (28) and register stone (12) is formed, the cylinder-fixed surfaces (21; 39) representing an abutment on both sides and the wedge connection being adjustable by means of the adjusting means (26) on the end face of the cylinder (01).

12. The apparatus according to claim 11, characterized in that the adjusting means (26) is designed as a nearly in the longitudinal direction of the cylinder (01) threaded spindle (26), by means of which the clamping strip (28) via the wedge connection in an almost to the longitudinal direction of the cylinder (01) vertical direction is adjustable.

13. The device according to claim 1 or 3, characterized in that the device in a longitudinal direction of the cylinder (01) extending recess (09) of the cylinder (01) is arranged, wherein a lateral surface (04) and the device connecting, and In the longitudinal direction of the cylinder (01) channel (02) receives a leading (06) and a trailing end (07) of the elevator (08).

14. The apparatus according to claim 13, characterized in that the leading end (06) of the elevator (08) has a recess (24) which cooperates with a projection (23) associated with the register stone (12).

15. The apparatus according to claim 13, characterized in that the channel (02) secant on the circumference of the cylinder (01), advantageously on the side of the leading end (06) of the elevator (08) at an acute angle (α), runs, and that the channel (02) on the lateral surface (04) has a width (b03) of an opening (03) in the circumferential direction of the cylinder (01) that is less than 3 mm.

16. The apparatus according to claim 2 or 3, characterized in that the bale of the cylinder (01) has a width which is at least the width of two lifts (08) arranged side by side in the longitudinal direction of the cylinder (01). equivalent.

17. The apparatus according to claim 2 or 3, characterized in that the bale of the cylinder (01) has a width which corresponds to the width of four lifts (08) arranged side by side in the longitudinal direction of the cylinder (01).

18. The apparatus according to claim 17, characterized in that the register stone (12) can be changed in position by almost half the width of the barrel of the cylinder (01).

19. The apparatus according to claim 13, characterized in that a width (b12) of the register stone (12) is greater than a width (b02) of the channel (02).