EP1619155B1 - Adjustment device for a folding cylinder - Google Patents

Description

The invention relates to an adjusting device for a folding cylinder for controlling folding products leading organs.

From the US 5,846,177 a mechanical adjusting device for a folding machine cylinder is known in which a spindle via a chain link moves a lever element, which then adjusted via a cam, the outer wall of the folding cylinder, thus making a circumferential adjustment of the folding cylinder. A disadvantage of this device is that the adjusting movement only has to be done mechanically "by hand".

From the US 5,443,437 is driven by an electric motor actuator for a folder cylinder known in which the electric motor via threaded wheels performs a radial spacing adjustment between Punkturnadeln and jaws. A disadvantage of this device is that the adjusting movement causes only a radial adjustment of the Falzwerkfunktionseinheiten.

The invention has for its object to provide a ferneinstellbare actuator of the type mentioned, which makes it possible to adjust with the same basic structure folded products leading organs in the circumferential direction of the folding cylinder or in the radial direction.

According to the invention, this is achieved by means of a linkage which is adjustable in length by means of an actuator arranged in the folding mechanism cylinder and an actuating member which is articulated on the output side to the linkage and is rotatably mounted about the axis of the folding cylinder actuator which drives the folding products.

Such a configuration offers the further advantage that it is independent of the main drive of the folding cylinder.

According to one embodiment of the invention, the rod has a rotatable and non-displaceably mounted in the longitudinal direction of the spindle with an external thread part, wherein the male threaded part engages in a threaded bushing, which is coupled by means of a bolt with the actuator. This embodiment moves the adjustment movement in a threaded connection. Therefore, an extremely sensitive adjustment is possible

Preferably, the actuator has an output shaft on which a bevel gear is mounted, which meshes with at least one mounted on a spindle further bevel gear and the further bevel gear drives the spindle.

This results in a space-saving design for transmitting the driving force to the length-adjustable spindle.

Advantageously, power supply to the actuator fixed to the shaft of the folding cylinder associated slip ring are provided which cooperate with a mounted on a fixed wall of the folding power supply contacts and the power supply contacts are arranged liftable from the slip rings. This embodiment prevents wear of the power supply contacts during operation of the folder cylinder.

Further features and advantages will become apparent from the additional dependent claims and a description of three embodiments with reference to the drawing.

Figur 1

einen Längsschnitt durch einen Falzwerkszylinder,

Figur 2

eine Stirnansicht eines Teiles des Zylinders nach Figur 1,

Figur 3

schematisch eine Stromabschaltvorrichtung,

Figur 4

einen Längsschnitt durch einen Falzwerkszylinder eines zweiten Ausführungsbeispiels,

Figur 5

eine Stirnansicht von Teilen des Zylinders nach Figur 4 und

Figur 6

eine Stirnansicht eines Falzwerkszylinders einer dritten Ausführungsform.

On this shows:

FIG. 1

a longitudinal section through a folder cylinder,

FIG. 2

an end view of a part of the cylinder after FIG. 1 .

FIG. 3

schematically a power shutdown device,

FIG. 4

a longitudinal section through a folder cylinder of a second embodiment,

FIG. 5

an end view of parts of the cylinder after FIG. 4 and

FIG. 6

an end view of a folding cylinder of a third embodiment.

The FIGS. 1 and 2 refer to a folding cylinder designed as a collecting cylinder of the folding unit of a web-fed rotary printing press.

In FIG. 1 is the folding cylinder with 1 and the driving shaft designated 2. Within the folding cylinder 1 an actuator 3 is permanently installed. The actuator is designed here as an electric motor. On an output shaft 4 of the actuator 3, a bevel gear 5 is firmly attached. With the bevel gear 5 kännt another bevel gear 6, which is fixedly mounted on a spindle 7. The spindle 7 is rotatably but non-displaceably mounted in the longitudinal direction by means of two bearings 8 on a fixedly connected to the cylinder 1 support bushing 9. The spindle 7 has an external thread part 10, which engages in a threaded bushing 11. The thread is self-locking. On the threaded bush 11, a projection 12 is provided with a bore into which a bolt 13 engages. The parts 7 to 13 form a linkage for transmitting the adjusting movement, as best of FIG. 2 can be seen. In FIG. 1 the parts 3 to 13 are shown laid in the cutting plane. The bolt 13 is firmly seated on an actuator 14 which is rotatably mounted on the cylinder 1 about its axis AA by means of a bearing 15. The disk-shaped actuator 14 carries on its outer periphery a ring gear 16. With the ring gear 16 mesh a number of pinions, z. B. 17. Each pinion 17 is seated on a shaft which is mounted with shaft portions 18 on the cylinder 1. The shaft further has at least two eccentric shaft sections 19, which engage in a tubular carrier 20. Between the two shaft portions 19 there is a connecting portion 21. At each tubular support 20, a bar 22 is provided which carries the circumferential segments 23. By the rotation of the shaft 18, 19, 21 move the eccentric shaft portions 19 the carrier 20 and thus the circumferential segments in the radial direction.

Between the circumferential segments 23 also puncture needles 24 and folding blade 25 are arranged in a conventional manner.

FIG. 2 shows the circumferential segment 23 in its maximum radially outwardly extended position. This position is used to process very thin folded products, so for example smaller advertising sheets. In order to set the circumferential segments in a position for normal thick folded products, as indicated schematically by the peripheral segment 26, or for processing very thick folded products, as indicated by the peripheral segment 27, the actuator 3 is turned on. About the bevel gears 5, 6, the spindle 7 is then rotated. This has the consequence that the external thread part 10 screwed into the threaded bushing 11 further, and therefore shortens the length of the linkage. This movement is implemented via the bolt 13 in a rotary movement of the actuator 14. As a result of the ring gear 16 on the outer circumference of the actuator 14, the eccentric shaft portions 19 is thereby rotated via each pinion 17. Thus, the circumferential segment 23 is moved in the radial direction via the tubular support 20. Since all circumference segments 23 are arranged the same, the circumference of the folding cylinder changes uniformly. The position of the peripheral segments 26, 27 in FIG. 2 is therefore only indicated to show the extent to which a radial change in the diameter of the folding cylinder is possible.

To ensure that upon rotation of the eccentric shafts 21 of the tubular support 20 executes only a radial movement, the one end of a guide rod 28 is firmly connected to two adjacent tubular supports 20. The guide rod 28 is designed to be split for assembly to to set the exact distance. However, other means for straight-line radial guidance of the circumferential segments 23 may be used.

Since the threaded connection between the threaded portion 10 and the threaded bushing 11 is self-locking, all parts, in particular the circumferential segments 23 remain after adjustment by the actuator 3 in position. The actuator 3 therefore only needs to be switched on for a short time. It therefore remains switched off during the operation of the folding cylinder 1.

Since the support sleeve 9 is on the one hand firmly mounted on the cylinder 1 and on the other hand firmly connected to the bearings 8, the actuator 14 is taken over the linkage 7 to 13 of the actuator 14 during operation of the folding cylinder 1.

To power is on a side wall 30 of the folding unit, such as FIG. 1 shows, by means of carriers 31, a slip ring housing 32 firmly attached. The slip ring housing 32 receives a slip ring carrier 33 which is fixedly connected to the shaft 2. The slip ring carrier 33 has a plurality of separate, in the axial direction one behind the other lying single slip rings. Each single slip ring is a power supply contact. z. B. 34, 35 assigned. The number of power supply contacts depends on the number of individual lines required. All individual slip rings together, the current is supplied via a terminal 36. The individual lines are combined and fed to the actuator 3 via a guided through the shaft 2 and the cylinder 1 manifold 37. In order to avoid a permanent grinding of the power supply contacts 34, 35 on the individual slip rings, the contacts 34, 35 are executed by the individual slip rings switched off. In the embodiment, a shaft 38 with a plurality of eccentric cam 39, 40 is provided for this purpose. By rotation of the shaft 38, the current feeders 34, 35 are lifted from the slip rings 33. In operation of the cylinder 1 thus the power supply is interrupted at this point to avoid unnecessary wear of the power supply contacts 34, 35.

The FIGS. 4 and 5 refer to a folding jaw cylinder designed as a jaw cylinder 50, which in turn can be preset to folding products of different thickness. On the cylinder 50, in turn, an actuator 51 is fixedly mounted, the bevel gear 52 with two bevel gears 53, 54 meshes. Each bevel gear 53, 54 is seated on a spindle 55, 56 which is rotatably mounted by means of a respective bearing 80, 81 but secured against longitudinal displacement. Each spindle 55, 56 carries an external thread part 57, 58, which is screwed into a respective threaded bushing 59, 60. Each threaded bushing 59, 60 is provided with a lug 61, 62, in the bore of which a bolt 63 or 64 engages.

The bolt 63 is fixedly connected to a disk-shaped actuating member 65 rotatably mounted about the axis A-A of the cylinder 50. The actuator member 65 is fixedly connected via webs not shown with a arranged at the other end of the cylinder 50 further actuator member 67. At the two actuator parts 65, 67 for each movable folding flap 68 each have an axis 69 is mounted. The axis 69 carries outside of the actuator member 67 has a roller 71 which cooperates with a arranged on a side wall 70 control cam 73 for opening and closing the movable jaw 68.

The bolt 64 passes through an opening 74 in the actuator part 65 and is firmly connected to a further actuator part 75. The actuator member 75 is connected via at least one cross member 76 with another actuator member 77 in connection. Both actuator parts 75, 77 are rotatably mounted about the axis A-A of the cylinder 50. On the cross member 76 50 fixed jaws 78 are mounted in the operation of the cylinder.

If the actuator 51 is turned on, the bevel gears 53, 54 are taken over the bevel gear 52. These therefore rotate again the spindles 55, 56 and thus their external thread parts 57, 58, which, depending on the direction of rotation, screw into the threaded bushes 59, 60 or turn out of these something. As a result of this movement, the bolts 63, 64 and thus the actuators 65, 67 and 75, 77 moves. As a result, the initial position of the movable jaws 68 and the fixed jaws 78 is adjusted in the circumferential direction of the folder cylinder.

During operation of the folding cylinder 50, in turn, the bearings 80, 81, the spindles 55, 56 and thus the two rods are taken along via the support bushing 79 connected to this cylinder. This rotational movement is transmitted via the bolts 63, 64 to the actuators 65, 67 and 75, 76, 77. During this movement, the movable jaws 68 are actuated via the roller 71 and the control cam 73 in a manner known per se.

While in the arrangement according to FIG. 4 and 5 for presetting the movable and fixed jaws an actuator is provided, shows FIG. 6 in that two actuators can also be provided for this purpose. In this case, one actuator acts on a bevel gear 90 and the other actuator on a bevel gear 91. The bevel gear 90 drives via the spindle 92, the threaded portion 93 and the threaded bushing 94 a bolt 95 for the one actuator. Similarly, the bevel gear 91 via the spindle 96, the threaded portion 97 and the threaded bush 98 drives the bolt 99 for the other actuator. The further embodiment agrees with the arrangement according to the FIGS. 4 and 5 match. This arrangement allows individual adjustment of both the fixed and the movable jaw.

Claims (14)

1. An adjusting device for a folding-unit cylinder for activating parts that guide folded products, characterised by a linkage system (7 to 13; 55, 57, 59, 61, 63; 56, 58, 60, 62, 64), which can be adjusted longitudinally by means of an adjusting drive (3, 51) arranged in the folding-unit cylinder (1, 50), and an adjusting part (14, 65, 67; 75, 77), which is articulated on the linkage system on the driven side, is rotatably mounted about the axis of the folding-unit cylinder and activates the parts guiding folded products so that adjustment of the parts guiding folded products is effected with the same basic structure of the adjusting device either in the circumferential direction or in the radial direction of the folding-unit cylinder.
2. An adjusting device according to claim 1, characterised in that the linkage system has a spindle (7, 55, 56, 80, 81, 92, 96) that is rotatable and mounted so that it cannot be displaced in the longitudinal direction and has an externally threaded portion (10, 57, 58, 93, 97), and the externally threaded portion engages in a threaded bushing (11, 59, 60, 94, 98) which is coupled to the adjusting part (14, 65, 67, 75, 77) by means of a pin (13, 63, 64, 95, 99).
3. An adjusting device according to claim 2, characterised in that the threaded connection between the externally threaded portion (10, 57, 58, 93, 97) and the threaded bushing (11, 59, 60, 94, 98) is formed in a self-locking manner.
4. An adjusting device according to at least one of the preceding claims, characterised in that the adjusting drive (3, 51) has a driven shaft (4) set on which there is a bevel gear (5, 52) that mates with at least one further bevel gear (6, 53, 54) set onto a spindle (7, 55, 56), and the further bevel gear drives the spindle (7, 55, 56, 90, 91, 92, 96).
5. An adjusting device according to at least one of the preceding claims, characterised in that the adjusting drive (3, 51) is formed as an electric motor.
6. An adjusting device according to at least one of the preceding claims, characterised in that provided to supply power to the adjusting drive (3) there are slip rings (33) that are fixedly connected to the shaft (2) of the folding-unit cylinder (1) and cooperate with [a] power-supplying contacts (34, 35) provided on a fixed wall (30) of the folding unit, and the power-supplying contacts are arranged so that they can be lifted off from the slip rings.
7. An adjusting device according to claim 6, characterised in that a shaft (38) are [sic] provided that has eccentrics (39, 40) lifting the power-supplying contacts (34, 35) off from the slip rings (33).
8. An adjusting device according to at least one of the preceding claims, characterised in that the adjusting part (14) is provided with an outer toothed ring (16), and into the toothed ring there engages a respective pinion (17) that drives a shaft which is mounted on the folding-unit cylinder (1) with shaft sections (18), engages in a tubular carrier (20) with eccentric shaft sections (19) and has a connecting section (21) between the shaft sections (19), and the tubular carrier carries radially extensible parts guiding folded products.
9. An adjusting device according to claim 8, characterised in that in each case two carriers (20) are fixedly connected together by means of a guide rod (28) for securement against torsion.
10. An adjusting device according to claim 8 or 9, characterised in that the parts guiding folded products are formed as circumferential sections (23) of a collecting cylinder.
11. An adjusting device according to one of claims 1 to 7, characterised in that the adjusting part (75, 76, 77) is fixedly connected to a part (78) that guides folded products and is adjustable in the circumferential direction.
12. An adjusting device according to claim 11, characterised in that the part guiding folded products is formed as a fixed folding-jaw portion (78).
13. An adjusting device according to one of claims 1 to 7, characterised in that each adjusting part (65, 67) bears the swivel axis (69) of a part (68) gripping folded products for guidance.
14. An adjusting device according to claim 13, characterised in that the part gripping the folded products is formed as a folding jaw (68).

Images