EP1997757A2 - Clamping cone for taking a spindle with a coiled roll of material in a roll changer - Google Patents

Abstract

The cone has an inner cone (1) provided with inner clamping flanges (3), which are distributed on a circumference of the inner cone. The inner cone is fastened to a roller support arm (2) of a roll changer. An outer cone has outer clamping flanges distributed on its circumference, and a hollow cavity of the outer cone extends axially inside of the outer cone. The inner cone is arranged in the hollow cavity of the outer cone. The outer clamping flanges are radially adjustable, where an inner diameter of the hollow cavity is unchangeable.

Description

The invention relates to a clamping cone for receiving a wound roll of material carrying sleeve in a roll changer according to the features of claim 1.

In reel changers with flying reel change an axleless reel seat has proven itself. Here, clamping cones are motor introduced into the sleeves of the material rolls and usually automatically clamped by means of jaws to ensure optimum torque transmission to the sleeve. For different types and widths of material rolls different winding tubes are used in the prior art, which have different inner diameters. For example, 3-inch and 6-inch cores, which are mentioned here by way of example as different types, are widespread.

In order to achieve a good utilization of the machines, it is sometimes necessary to process such different types of material rolls in one or several successive productions. This is especially common in smaller web processing plants or printing plants. So far, different reel changers must be provided in a system to process different types of material rolls, or it is a costly conversion to reel changer required, causing high downtime.

Greater flexibility in the use of the roll changer could be achieved by the use of clamping cones, which are suitable for different types of sleeves.

From the DE 100 56 274 B4 a mandrel is known, which is provided for sleeves with different diameters. This mandrel has in the axial direction one behind the other lying several different sized recordings, which can be brought to bear on the inner circumference of the roll of material and whose diameter is variable in a certain range. The change in the diameter of the recordings is made by clamping jaws, which are adjustable in the radial direction to the outside. For this purpose, designed as a piston actuator is provided with conical piston sections. With axial displacement of the actuator, a radial adjusting movement of the clamping jaws takes place. A disadvantage of this solution is that due to the axial extent of the clamping jaws through the successively arranged recordings, a different control of the roller support arms and a larger (wider) construction of the roll changer is required. In order to be able to take up the largest roll width, the support arms must first be moved apart until the roll of material fits in between. This requires a greater travel than the clamping cones with only one shot.

The DE 34 39 628 A1 discloses a reel, with a spreadable segments having drum, on which an expandable sleeve is attachable to adapt to different coil inner diameter.

The US 2001/0054667 A1 shows a holding mechanism for paper roll tubes with different inner diameter.

The FR 768 300 A shows a clamping shaft for large variants of the diameter.

The invention has for its object to provide a clamping cone for receiving a wound roll of material bearing sleeve in a reel changer.

The object is achieved by the features of claim 1.

The advantages achieved by the invention are, in particular, that the adjustment of the clamping cone for different types of tube material rolls can be done very easily and without major changeover times on the roll changer. Furthermore, the clamping cone has no substantially greater axial extent than the clamping cones previously used, which facilitates threading the uprights. In addition, this can be maintained the previous design and control of the roll changer.

A clamping cone comprises an inner cone and an outer cone which can be attached to it.

The inner cone is designed to accommodate a roll of material of a small first type (3-inch winding tube, sleeve inner diameter 3 inches or 75 mm). It comprises a plurality of circumferentially distributed inner clamping jaws, which are preferably radially adjustable. In a preferred embodiment, four internal clamping jaws are provided.

The outer cone is designed as an adapter and pushed onto the inner cone, so that now a roll of material of a large second type (6-inch winding tube, sleeve inner diameter 6 inches or 150 mm) can be raised. The outer cone preferably also comprises a plurality of outer clamping jaws distributed on its circumference, which are radially adjustable for better sleeve tension. In a preferred embodiment, four outer clamping jaws are provided in the outer cone.

When Aufachsvorgang the different types of rolls of material in the roll changer are each in the clamping cone radially displaceable jaws available, so that an optimal torque transmission is ensured on the clamped roll of material. In this case, the same clamping mechanism can be used in both variants.

The clamping cone is preferably arranged in a reel changer of a rotary printing press.

An embodiment of the invention is illustrated in the drawings and will be described in more detail below.

Fig. 1

einen Innenkonus eines Spannkonus an einem Rollentragarm eines Rollenwechslers in einer Längsschnittdarstellung;

Fig. 2

eine Innenspannbacke des Innenkonus in räumlicher Darstellung;

Fig. 3

einen Außenkonus des Spannkonus in einer räumlichen Darstellung;

Fig. 4

den Außenkonus in einer Längsschnittdarstellung III - III;

Fig. 5

eine perspektivische Darstellung einer Blattfeder eines Blattfederpaketes;

Fig. 6

eine Außenspannbacke des Außenkonus in perspektivischer Darstellung;

Fig. 7

den Spannkonus im zusammengebauten Zustand in einer Längsschnittdarstellung, wobei der Innenkonus mit aufgestecktem Außenkonus gezeigt ist;

Fig. 8

den Spannkonus gemäß Fig. 7 in einer Querschnittsdarstellung VII - VII;

Fig. 9

eine zweite Längsschnittdarstellung VIII - VIII des Innenkonus mit aufgesetztem Außenkonus gemäß Fig. 7;

Fig. 10

den Rollentragarm eines Rollenwechslers mit dem Spannkonus.

Show it:

Fig. 1

an inner cone of a clamping cone on a roller support arm of a roll changer in a longitudinal sectional view;

Fig. 2

an inner clamping jaw of the inner cone in a spatial representation;

Fig. 3

an outer cone of the clamping cone in a spatial representation;

Fig. 4

the outer cone in a longitudinal section III - III;

Fig. 5

a perspective view of a leaf spring of a leaf spring package;

Fig. 6

an outer clamping jaw of the outer cone in perspective view;

Fig. 7

the clamping cone in the assembled state in a longitudinal sectional view, wherein the inner cone is shown with attached outer cone;

Fig. 8

according to the clamping cone Fig. 7 in a cross-sectional view VII - VII;

Fig. 9

a second longitudinal section VIII - VIII of the inner cone with attached outer cone according to Fig. 7 ;

Fig. 10

the roll carrying arm of a roll changer with the clamping cone.

Fig. 1 shows an inner cone 01, which is attached to a roller support arm 02 of a not shown in this view reel changer. The inner cone 01 comprises a plurality of, in particular four, inner clamping jaws 03 distributed on its circumference, which are radially adjustable via a toggle mechanism 04. The toggle mechanism 04 operates in the manner by a control axis 06 is displaced in the axial direction. Adjusting elements 07, which are movably mounted on the adjusting axis 06, engage in bulges 08 of the inner clamping jaws 03 and stretch by sliding along the bulges 08 of the inner clamping jaws 03 like a screen, whereby the inner clamping jaws 03 are moved in the radial direction to the outside.

However, the clamping mechanism can also be embodied in other ways, for example by an axial movement of an actuating piston with conical piston sections, which interact with correspondingly shaped sections of the clamping jaws.

At the in Fig. 1 illustrated embodiment, at least one inner spring 09, z. B. an inner leaf spring 09, in particular inner leaf spring packets 05 between a cone body 11 and the inner jaws 03 are provided to allow a provision of the inner jaws 03 in a radially inner position. This is required to decay the roll of material.

A leaf spring package 05 is z. B. from at least one leaf spring 09 and an additional leaf spring ( Fig. 5 ).

At the free end of the inner cone 01, a centering cap 12 is provided, which facilitates threading of a material sleeve of a roll of material during Aufachsvorgang by their conical shape. An ejector 13, z. B. Auswerferscheibe 13 with a detachable inner part 14 is provided on Rollentragarm 02 to realize an ejector for empty material sleeves, which will be explained later in more detail.

Between the centering cap 12 and the inner clamping jaws 03 is an intermediate ring 15th

Fig. 2 shows a spatial representation of the inner clamping jaw 03. The bulges 08 are already described radial adjustment of the inner clamping jaws 03 by means of the toggle mechanism 04. At the cone base body 11 facing end surfaces of the inner clamping jaw 03 each have a groove 16 is provided, in which the inner leaf springs 09 mounted in the State intervenes. The inner jaws 03 continue to have two holes 17, whose function will be discussed later. The holes 17 are preferably provided with an internal thread. Preferably axially extending webs 18 are provided on the radially outwardly directed surfaces of the inner clamping jaws 03, which are pressed during clamping of a material sleeve in the sleeve body to improve in this way the torque transmission.

The leaf springs 09 and 24 are preferably always installed together as a "spring package" to achieve the provision of all jaws (inner and outer jaws).

In Fig. 3 an outer cone 19 of the clamping cone is shown in a spatial representation. In the outer cone 19 are distributed on the circumference in openings, in particular in slots, z. B. four outer clamping jaws 21 stored. The outer clamping jaws 21 are arranged radially movable in the slots. In the axial direction extending through Holes 22 are used to attach the outer cone 19 on the cone base body 11. The outer cone 19 is preferably formed sleeve-shaped or cup-shaped.

Fig. 4 shows a longitudinal section of the Au ßenkonus 19 along in Fig. 3 indicated section line III - III. The outer cone 19 has an inner cavity 23 which substantially corresponds to the size of the inner cone 01 when the inner clamping jaws 03 are retracted.

The outer clamping jaws 21 are mounted with a radial freedom of movement in the outer cone 19. This storage is realized by dowel pins 26, which are firmly clamped on the one hand in the outer cone 19 and on the other hand engage in a lateral groove 27 of the outer clamping jaw 21. Furthermore, a lateral bore 28, immediately following the lateral groove 27, provided in the outer clamping jaw 21, in which the dowel pin 26 can be knocked from the outside, to allow disassembly of the outer clamping jaws 21, if necessary.

The outer clamping jaws 21 are at their axial ends by at least one outer spring 24, for. B. an outer leaf spring 24, in particular outer leaf spring packets 25, which are arranged between outer cone 19 and outer clamping jaws 21, returned in the radial direction. The outer leaf springs 24 engage in a lateral notch 29, which is provided on the end faces of the outer clamping jaws 21.

In Fig. 5 is a leaf spring package 05, consisting of a leaf spring 09 and another leaf spring shown. The inner leaf spring 09 is preferably made of a spring steel strip and offers a high tensile strength. Due to their bias, the inner clamping jaws 03 are reset when relieved to an inner position. The inner leaf spring 09 is preferably made of a flat metal band, which is biased arcuately. It can also summarized several leaves (spring layers) with different lengths and biases to a leaf spring package which is held together by a common heart bolt and spring clips. By inserted plastic flakes or lubrication with grease, the friction is reduced when the ends of the layers move by length change during compression against each other.

To facilitate "threading" of the inner cone 01 in the outer cone 19, the Au ßenspannbacken 21 on the roller support arm 02 (see Fig. 10 ) facing side on a chamfer 30. The centering cap 12 must be removed for this purpose. The in Fig. 1 shown intermediate ring 15 on the inner cone 01 also advantageously has grooves, not shown, in which the outer clamping jaws 21 slide on pushing the outer cone 19 along.

Fig. 6 shows the outer clamping jaw 21 in a three-dimensional representation. In the radially outward side, the Au ßenspannbacke 21 preferably has two longitudinally extending webs 31, which press into the sleeve material during the clamping process. In the Fig. 6 are also the lateral groove 27 and the lateral bore 28 can be seen, in which the clamping pin 26 engages in the mounted state.

Furthermore, a two-sided lateral notch 29 can be seen, in which engages the outer leaf spring packets 25 in the mounted state. The chamfer 30 at the front of the outer clamping jaw 21 is indicated by the dashed lines. Radially extending continuous fastening bores 32 serve for fastening the outer clamping jaws 21 to the inner clamping jaws 03 in the assembled state of the outer cone 19 on the inner cone 01.

Fig. 5 shows an outer leaf spring 24 of the leaf spring package 25 in a three-dimensional view. This is like the inner leaf spring 09 preferably made of spring leaf steel. The inner leaf spring assembly 05 and the outer leaf spring package 25 each have the provision for resetting the inner clamping jaws 03 and the Outer clamping jaws 21 required bias on.

In Fig. 7 the clamping cone for the inclusion of material rolls of the second type (6 inches) is shown. The outer cone 19 is pushed onto the inner cone 01. The position of the outer cone 19 above the inner cone 01 is fixed via preferably two arranged in the cone body 11 keyways 33. The feather keys 33 are arranged on the front side of the outer cone 19 on the roller support arm 02 facing side. At the same time, the feather keys 33 contribute to the transmission of torque in the operating state of the roll changer. The outer cone 19 has on its side facing the Rollentragarm 02 side of the shape of the key 33 corresponding recess or groove.

The inner clamping jaws 03 are connected to the outer clamping jaws 21 by screws 34 and are now reset simultaneously by the inner leaf springs 09 and the outer leaf springs 24. The radial adjusting mechanism takes place as already in Fig. 1 described by the adjusting axis 06 is displaced in the axial direction, wherein the toggle mechanism 04 actuates the adjusting elements 07. The radial displacement of the inner clamping jaws 03 thus causes a similar radial displacement of the outer clamping jaws 21st

Fig. 8 shows the clamping cone according to Fig. 7 in a cross-sectional view along the section line VII - VII in Fig. 7 , Herein it can be seen that the outer clamping jaws 21 are in the deferred state of the outer cone 19 on the inner clamping jaws 03 in an afflicted with sufficient clearance surface guide, which is a joint operation by the toggle mechanism 04 and a common provision on the inner leaf springs 09 and the outer leaf springs 24th allowed.

The screws 34 lead through the mounting holes 32 of the outer clamping jaws 21, to the already mentioned holes 17 of the inner clamping jaws 03. Der Outer cone 19 is in the embodiment shown about eight screws 36, preferably Allen screws, which extend through the outer cone 19 in the axial direction, attached to the cone body 11.

An inner diameter d23 of the cavity 23 of the outer cone 19 is unchangeable. An outer diameter D11 of the cone base body is in the technical sense (in the tolerances) equal to the inner diameter d23 of the outer cone. The outer cone 19 is preferably immovably fixed to the cone body 11.

This is also in Fig. 9 shown in a longitudinal sectional view. The illustration corresponds to a section along the section line VIII - VIII in Fig. 8 , A screw lock 37 ensures secure attachment of the Au ßenkonus 19 on the cone body 11th

A centering cap 38 is attached to the free end of the outer cone 19. The centering cap 38 also serves as an additional safeguard for the screws 36.

For the realization of the ejector function of the residual sleeve, a second inner part 39 is to be mounted in the ejector 13 prior to assembly of the outer cone 19, which functionally replaces the first inner part 14, which is needed to realize the Auswerferfunktion with exclusively used inner cone 01.

Based Fig. 10 in which the roll support arm 02 of the roll changer is shown with the clamping cone, the function of the sleeve ejector can be explained. In the illustration according to Fig. 10 is the outer cone 19 mounted on the inner cone 01, the clamping cone so set up for receiving a 6-inch sleeve.

The tube ejector is designed as a stationary construction, ie it contains no rotating parts. The tube ejector includes a ring piston 41, shown schematically, which is pneumatically operated. The ejector 13 is with Push rods 42 connected, which rest loosely on the annular piston 41. In pneumatic operation, the annular piston 41 presses on the push rods 42 and moves the ejector 13 in the direction of the free end of the clamping cone, whereby an empty winding tube from the clamping cone (here outer cone 19) is stripped off. After the sleeve ejection, a return of the ejector 13 is preferably carried out by tension springs, not shown, which retract the push rods 42 back to their original position, while the pressure side of the annular piston 41 is vented.

There are provided limit switches in the vicinity of the ejector 13, by which a query of the position of the ejector 13 is realized.

Starting from the inner cone 01 according to Fig. 1 the assembly process of the outer cone 19 will be explained below.

First, the centering cap 12 is removed from the inner cone 01 and the first inner part 14 of the ejector 13 dismantled. In the ejector 13, the second inner part 39 is now to be mounted. Subsequently, the outer cone 19 can be postponed. The position of the outer cone 19 is fixed by the feather keys 33, which engage in two grooves of the outer cone 19. The outer cone 19 is now screwed by eight screws 36 on the cone body 11. The centering cap 38 is then set up and tightened. By the screws 34, the outer clamping jaws 21 are attached to the inner clamping jaws 03.

Via an initiator, not shown, the assembled or disassembled position of the outer cone 19 can be queried. It is therefore always possible to determine at the operator station whether the roll changer is equipped for a 3-inch or 6-inch sleeve.

In a first operating state, the inner clamping jaws 03 are a first type of roller arranged with first sleeve inner diameter (eg 3 inches) supporting. In this first operating state no outer cone 19 is arranged on the inner cone 01. In a second mode of operation, the outer jaws are arranged to carry a second type of reel having a second inner diameter (eg, 6 inches) different from the first inner diameter of the sleeve.

LIST OF REFERENCE NUMBERS

01

inner cone

02

support arm

03

Interior jaw

04

Toggle mechanism

05

Leaf spring assembly

06

adjusting axis

07

actuator

08

bulge

09

Spring, leaf spring, inner

10

-

11

Cone body

12

centering

13

Ejector, ejector disc

14

Inner part, first

15

-

16

groove

17

drilling

18

web

19

outer cone

20

-

21

Outer jaw

22

drilling

23

cavity

24

Spring, leaf spring, outer

25

Leaf spring assembly

26

dowel pin

27

groove

28

drilling

29

notch

30

bevel

31

web

32

mounting hole

33

Adjusting spring

34

screw

35

-

36

screw

37

threadlocking

38

centering

39

Inner part, second

40

-

41

annular piston

42

pushrod

d23

Inner diameter of the cavity of the outer cone

D11

Outer diameter of the cone body

Claims (29)

Clamping cone for receiving a wound roll of material bearing sleeve in a roll changer, wherein an inner cone (01) with a cone base body (11) and with a plurality of inner clamping jaws (03) distributed on the circumference of the inner cone (01), which is fastened to a roll support arm (02) of the roll changer, - wherein an outer cone (19) is arranged with a plurality of outer clamping jaws (21) distributed on its circumference and an inner axially extending cavity (23), - wherein in the cavity (23) of the outer cone (19) of the inner cone (01) is arranged, - Wherein the outer clamping jaws (23) are radially adjustable. Clamping cone according to claim 1, characterized in that the outer clamping jaws (21) are arranged in openings of the outer cone (19). Clamping cone according to claim 2, characterized in that the openings are slots. Clamping cone according to claim 3, characterized in that the outer clamping jaws (21) are arranged radially movable in the slots. Clamping cone according to claim 1, characterized in that the outer cone (19) is sleeve-shaped or cup-shaped. Clamping cone according to claim 1, characterized in that an inner diameter (d23) of the cavity (23) of the outer cone (19) is unchangeable. Clamping cone according to claim 1, characterized in that an inner diameter (d23) of the cavity (23) of the outer cone (19) is equal to an outer diameter (D11) of the cone base body (11). Clamping cone according to claim 1, characterized in that the outer cone (19) immovably fixed to the cone base body (11). Clamping cone according to claim 1, characterized in that in a first operating state, the inner clamping jaws (03) are arranged carrying a first roller type with the first sleeve inner diameter. Clamping cone according to claim 1, characterized in that in a second operating state, the outer clamping jaws (21) are arranged supporting a second roller type with the second sleeve inner diameter. Clamping cone according to claim 9, characterized in that in the first operating state on the inner cone (01) no outer cone (19) is arranged. Clamping cone according to claim 1, characterized in that by adjusting means (06, 07), the inner clamping jaws (03) are displaceable radially outwards and with deferred outer cone (19), the outer clamping jaws (21) via the coupled inner clamping jaws (03) are displaced radially outward , Clamping cone according to claim 1, characterized in that the inner clamping jaws (03) are radially adjustable and are found in a retracted state and in an extended state. Clamping cone according to claim 1, characterized in that the Inner clamping jaws (03) via a toggle lever system (04) radially outward in the extended state are movable. Clamping cone according to claim 1, characterized in that the inner clamping jaws (03) in each case by at least one inner spring (09), which are arranged between the inner clamping jaw (03) and the cone base body (11) are reset by the spring force in the retracted state. Clamping cone according to claim 1, characterized in that end faces the outer clamping jaws (21) in the axial direction a lateral notch (29), in which engages at least one outer spring (24) which is arranged in the outer cone (19). Clamping cone according to claim 15 or 16, characterized in that the inner spring (09) and / or the outer spring (24) as a leaf spring (09, 24) is formed. Clamping cone according to claim 17, characterized in that the inner leaf spring (09) in an inner leaf spring packet (05) and / or the outer leaf spring (24) in a leaf spring packet (25) is arranged. Clamping cone according to claim 1 or 16, characterized in that the outer clamping jaws (21) have a lateral groove (27) into which a in the outer cone (19) arranged clamping pin (26) engages. Clamping cone according to one of claims 1 to 19, characterized in that in the mounted state of the outer cone (19), the outer clamping jaws (21) on the inner clamping jaws (03) of the inner cone (01) are arranged. Clamping cone according to claim 20, characterized in that each of Au ßenspannbacken (21) with the underlying each inner clamping jaw (03) screwed or otherwise connectable. Clamping cone according to one of claims 1 to 21, characterized in that the outer clamping jaws (21) at a free end of the clamping cone and the cavity (23) facing side have a chamfer (30). Clamping cone according to one of claims 1 to 22, characterized in that between the conical base body (11) and the outer cone (19) keyways (33) for fixing the position of the outer cone (19) are arranged. Clamping cone according to one of claims 1 to 23, characterized in that the clamping cone further comprises an initiator which detects the mounted outer cone (19) and sends a status message to an operator. Clamping cone according to one of claims 1 to 24, characterized in that the clamping cone further comprises an ejector (13), which is adapted by an interchangeable inner part (14; 39) to the respectively used inner or outer cone (03; 19), wherein by an axial displacement of the ejector (13) a residual sleeve is stripped from the clamping cone. Clamping cone according to claim 22, characterized in that the actuation of the ejector (13) in the axial direction by a pneumatically operated, in the roller support arm (02) arranged annular piston (42). Clamping cone according to claim 26, characterized in that the end positions of the ejector (13) scanning initiators are arranged. Clamping cone according to claim 26, characterized in that the ejector (13) is designed as an ejector disc (13). Clamping cone according to claim 1, characterized in that the clamping cone is arranged in a reel changer of a web-fed rotary printing press.

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