EP1378475A2 - Draw roller with adjustable drawing ring - Google Patents

Abstract

The traction roll pulls webs (8) of web material (e.g. paper). it has at least one traction ring (11a, 11b) on at least part of the roll circumference. The traction ring or rings can be displaced on the traction roll. There may be a setting device by which the position of at least one traction ring on the roll can be adjusted.

Description

The present invention relates to a pulling roller for pulling or transporting of sheet material, which is used for example in rotary printing presses for the Newspaper printing or the production of akzidenz-like printed products used can be.

For transporting a web, such as a printed paper web in one Folder of a rotary printing machine, pull rollers are used, the side arranged pulling rings should run in the unprinted edge region of the web. Usually are two coupled by a drive rollers each provided with two pull rings, which in pairs are in operative connection with each other and by a rotary motion for a Train to the train and thus ensure a transport of the train.

Are webs with different width, for example, different paper widths for Different formats of printed products are used, so the draw roller must be with be adapted to the arranged thereon pull rings.

From EP 0 140 015 A2 a roller with tension rings is known, wherein for changing the Position of a pull ring is replaced by a set of semi-cylindrical inserts and is replaced by another set of semi-cylindrical inserts in which the Traction rings are arranged at other positions. For this purpose, the staked inserts removed from the lateral surface of the draw roller and new inserts are clamped. According to EP 0 140 015 A2, the previously required time duration can be used for the corresponding time Change in the roller can be reduced from about one day to about 15 minutes.

It is an object of the present invention to provide a draw roll for drawing to propose sheet material with pull rings, which quickly and easily different web widths can be adjusted.

This object is solved by the subject matters of the independent claims. advantageous Embodiments emerge from the subclaims.

The draw roller according to the invention is advantageously an approximately cylindrical body and can be used for pulling sheet material. On a part of the Roll circumference are arranged at least one and preferably two or more pull rings, which can come into contact with the train to be transported. Often the Pull rings positioned on the draw roller so that they are in a blank and the Example white border area of a train to be transported can run. According to the invention, at least one pull ring is arranged on the draw roller in such a way that it rests on the pull roll Pull roller preferably be moved in the axial direction of the tension roller on the surface can. An applied on at least a portion of the circumference of the draw roller pull ring can According to the invention, for example via a mounted on an adjusting bearing on the Zugwalze be held and preferably with respect to the roller z. B. by a groove or other suitable elements to be secured against rotation, so that a rotational movement of the Zugwalze be implemented in a rotation of resting on the tension roller pull ring can and, for example, transferred to a standing in contact with the pull ring web can be. The pull ring according to the invention preferably in the axial direction of Traction roller to be moved without replacing elements of the draw roller itself Need to become.

Advantageously, two, three, four or more pull rings are provided on a tension roller, wherein adjusted at least one pull ring, so for example in the axial direction on the draw roller can be moved. Advantageously, two or even all pull rings on the Pull roller be attached, that these can be adjusted or moved. General can on a tension roller both slidably mounted or adjustable, as well as non-adjustable and be arranged on the roller fixed fixed pull rings, for example.

The position of the at least one arranged on the tension roller adjustable pull ring can advantageously by acting from the outside on the tension roller adjusting respectively. For example, the adjusting device may have a threaded spindle, which is preferably arranged axially parallel to the axis of rotation of the tension roller, so that over a Rotation of the threaded spindle, which preferably with a sliding thread or a screw connection cooperates, directly or indirectly, for example, under Use of sliding elements or sleeves and bearings on the draw roller arranged pull ring can be moved on the draw roller. To drive the Threaded spindle can be arranged in or outside the tension roller motor or a manually operable element, such. B. a handwheel, be provided so that one of the motor or handwheel generated rotary motion at least one or more on the Pull roller arranged pull rings individually or together in the same or opposite Direction can be moved.

Furthermore, it is possible, the position of a pull ring by a direct Move movement to change. For example, a rod directly or indirectly to Example of a sleeve and bearing with the arranged on the tension roller pull ring be connected so that a displacement of the rod in a displacement of the preferred rotated against the pull roller mounted pull ring along the draw roller implemented can be. For displacement of the rod, for example, a hydraulic or pneumatic device, such. B. a pneumatic piston, a manually operable element, or an acting on the rod z. B. electromagnetic device, such as For example, a motor or an electromagnet can be used.

The arranged on the tension roller at least one sliding pull ring can according to preferred embodiments so both on a rotating element, such as For example, a threaded spindle, and / or a sliding element, such as For example, a sliding rod to be moved on the draw roller, so that it is no longer necessary to perform mechanical work on the draw roller itself to To change the position of a pull ring on the draw roller, so for example the pull ring to move in the axial direction of the tension roller.

Advantageously, a measuring and / or display element, such as a Position indicator for indicating the position of the pull ring on the roller at or outside the Be provided effective range of the tension roller, with which the determined position of a Zugringes displayed on the draw roller and measured and z. B. for an automatic Position adjustment can be used.

In another aspect, the invention relates to a system with at least two rollers, wherein at least one of the preferably two rollers at least one pull ring which, as described above, is arranged adjustably on the roller.

The rollers are preferably provided in pairs and are z. B. in operative connection, so that the rollers z. B. be brought by a pivoting of a roller in a position can be, in which the central or rotational axes of the rollers are approximately parallel to each other and a web can be guided between the rollers and / or the tension rings.

In this case, one or both rollers can be mounted in a stationary and / or pivotable manner, so that For example, a path between a non-pivotable and one on the not pivotable roller pivoting draw roller can be guided or transported.

In this case, advantageously, a drive for driving at least one and preferably for Driving two or more draw rollers may be provided, so that the draw rollers to each other can be driven synchronously to a safe transport or a defined To ensure tension of the guided between the tension rollers web.

Advantageously, the draw roller with at least one invention adjustable pull ring in the printing industry, for example for transporting a paper web at a former used.

In another aspect, the invention relates to a method of fitting a tension roller to various conditions of use, in particular for adjusting the Position of at least one pull ring on a draw roller, the pull ring directly on the Drawing roller, preferably moved on the surface and in the axial direction of the draw roller becomes.

Figur 1a

eine schematische Ansicht der Position von auf einer Zugwalze gelagerten Zugringen zum Führen von einem Falztrichter zugeführten Papierbahnen unterschiedlicher Breite;

Figur 1b

eine Seitenansicht der in Figur 1a gezeigten Anordnung

Figur 2

eine mögliche Anordnung zweier Zugwalzen zum Führen einer Bahn;

Figur 3

einen mit einer Gewindespindel verstellbaren auf einer Zugwalze gelagerten Zugring;

Figur 4

einen durch eine Stange auf einer Zugwalze verschiebbaren Zugring;

Figur 5a

eine Vorrichtung zum Verstellen der Positionen von Zugringen auf mehreren Zugwalzen; und

Figur 5b

eine Draufsicht auf die in Figur 5a gezeigte Vorrichtung.

The present invention will be described by way of example with reference to the accompanying drawings. Show it:

FIG. 1a

a schematic view of the position of mounted on a tension roller pull rings for guiding supplied from a former other webs of different widths;

FIG. 1b

a side view of the arrangement shown in Figure 1a

FIG. 2

a possible arrangement of two tension rollers for guiding a web;

FIG. 3

a threaded spindle adjustable on a tension roller mounted pull ring;

FIG. 4

a sliding by a rod on a tension roller pull ring;

FIG. 5a

a device for adjusting the positions of pull rings on a plurality of draw rollers; and

FIG. 5b

a plan view of the device shown in Figure 5a.

Figures 1a and 1b show two formers 6 and 7, which one or more Paper webs 8 are supplied. The paper webs 8 are initially over a Funnel roller 9 out before they rest on the respective folder 6, 7 and the in Figure 1b dashed longitudinal fold over the respective funnel 6 and 7 at the Position of the funnel tip 10 is formed. The longitudinally folded endless paper webs 8 form after the funnels 6, 7 a so-called bundle 5. As shown in Figure 1b, the run Paper webs 8 always preferably center on the funnel tip 10, when a fold in the middle the paper web is to be generated. If a paper web has the width 2 x B1, then the in 1a, the right pull ring of the draw roller (not shown) in FIG the right edge portion of the paper web 8 at the position 11.0, while the left Pull ring is arranged in the position designated 11.1, so that both pull rings 11.0 and 11.1 can run in the unprinted edge region of the folded half web. Will one Forming hopper 6, 7 but fed a paper web 8 with the smaller width 2 x B2, so must the left pull ring is moved from position 11.1 to position 11.2 to move the web in to lead unprinted edge area. The arranged in position 11.0 pull ring remains while z. B. in the same position on the funnel tip 10th

As can be seen from Figure 1b, the draw rollers 4, on which the pull rings are arranged after the respective funnels 6 and 7 respectively.

Figure 2 shows an embodiment with a fixed for example in the walls of a Printing press or folding device mounted draw roller 4.1 and one at a Swivel arm 12 mounted adjustable draw roller 4.2, which on the draw roller 4.1 can be pivoted. Both draw rollers 4.1 and 4.2 can with a drive be coupled with each other for example via a gear transmission or by means of toothed belt and are in operative connection.

On one or both draw rollers 4.1 and 4.2 at least one pull ring 11 is rotationally fixed and axial slidably mounted, as shown in Figure 3. A threaded spindle 16 is rotatable and stationary stored in a wall 18 and screwed into a threaded sleeve 15. A geared motor 17 is connected to the threaded spindle 16 and, for example, also on the wall 18th appropriate. With the geared motor 17 can act on the threaded spindle 16 Rotational motion are generated. The threaded spindle 16 holds over the non-rotatably mounted sliding threaded sleeve 15 and connected to the threaded sleeve 15 axially slidable the pull rollers 4.1 and 4.2 surrounding sleeves 14 on the sleeves 14th arranged rolling bearings 13 and connected to the bearings 13 pull rings 11a and 11b on the respective draw rollers 4.1 and 4.2 in the position shown in Figure 3.

The pull rings 11a and 11b are thus axially displaceable on the rollers 4.1 and 4.2 but rotatably supported relative to the respective draw rollers 4.1 and 4.2, i. a rotation of Pull rolls 4.1 and 4.2 is applied to each of the pull rings 11a and 11b thereon transfer.

If the position of the tension rings 11a and 11b on the tension rollers 4.1 and 4.2 is to be changed, so can be transmitted via a geared motor 17 to the threaded spindle 16 Rotary movement mounted on the threaded spindle 16 and engaging in the thread Threaded sleeve 15 are moved in the axial direction of the draw rollers 4.1 and 4.2. The Threaded sleeve 15 is fixedly connected to the axially displaceable sleeves 14 and transmits an axial displacement movement on the sleeves 14, of which a sliding movement can be transmitted to the respective pull rings 11a and 11b via the rolling bearings 13, so that the pull rings 11a and 11b along the axial direction of the respective draw rollers 4.1 and 4.2 can be moved.

Thus, by simply driving the geared motor 17, the position of one on one Pull roller 4.1 or 4.2 lying Zugringes 11a and 11b, for example, at a Production change automatically be adjusted without the replacement or Installation work on the tension roller must be performed.

Instead of the motor 17, a handwheel 19 (shown in dashed lines) may also be provided be so that the position of the pull rings 11a and 11b and outside the effective range of Pull rollers 4.1 and 4.2 can be changed. Advantageously, this can be a Position indicator be provided so that the pull rings 11 a and 11 b exactly on one desired position can be positioned on the respective draw rollers 4.1 and 4.2.

Alternatively, instead of a rotatable threaded spindle 16 and a rod 20 for Example, via a thread or be attached directly to the threaded sleeve 15, as in Fig. 4th shown. For example, the rod 20 may be coupled to a pneumatic piston 21, so that via a control of the pneumatic piston 21 via the rod 20, the position at least one pull ring 11a and 11b are moved on the draw rollers 4.1 and 4.2 can.

In general, with the device according to the invention more than the example specified two positions of the pull rings can be adjusted, wherein advantageous Position detection devices, ie z. B. known position sensors can be used can to measure the position of a pull ring on a draw roller and z. B. automatically adjust.

It can z. B. also one or more pull rings on one or more rollers independently be adjusted from each other.

FIGS. 5a and 5b show an embodiment in which threaded spindles 16 a plurality of draw rollers by means of a coupling, for example via a toothed belt 22 or a chain together via a single drive means 17, such as a Adjusting motor or a handwheel, can be adjusted so that the construction of the device simplified and the setting and the operation of several draw rollers are synchronized can.

Claims (11)

Drawing roller for drawing sheet material with at least one on at least part of the roll circumference arranged pull ring (11), characterized in that the at least one pull ring (11) on the draw roller (4) is displaceably mounted. Draw roller according to claim 1, wherein at least two pull rings (11) on the draw roller (4) are provided and one or more pull rings on the draw roller (4) displaceable are stored. Device with a draw roller according to claim 1 or 2, wherein an adjusting device (13-17, 19-21) is provided, with which the position of at least one pull ring (11) can be adjusted on a draw roller (4). Device with a draw roller according to claim 3, wherein the adjusting device a Has threaded spindle (16). Device with a draw roller according to claim 3, wherein the adjusting device a Rod (20). Device according to one of claims 3 to 5, wherein the adjusting device a Motor (17), an electromagnetic, hydraulic or pneumatic device (21). System with at least two draw rollers, wherein at least one draw roller (4) after a of claims 1 or 2 is formed. A system according to claim 7, wherein at least two draw rollers (4) are mutually opposed are provided opposite. System according to one of the two preceding claims, wherein at least one Pull roller (4) is stored stationary and / or pivotable. System according to one of claims 7 to 9 with at least one device according to one of claims 3 to 6. Method for adapting a draw roller (4) to various conditions of use, wherein at least one pull ring (11) arranged on the draw roller (4) on the draw roller (4) can be moved.

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