EP1060880A2 - Threading device for a rotary printing machine. - Google Patents

Abstract

The device has a guide unit (2) and a feed triangle (1), which is fixed to one end of the length of paper (3). The feed triangle is releasably connected to the guide unit along the whole of a first side at given fixing points, using hooks and eyes or a zip or slide fastener. The feed triangle may be made of a reinforced textile material, with the fibre running parallel or perpendicular to the hypotenuse of the triangle.

Description

The present invention relates to a device for pulling a web of material into a rotary printing press according to the preamble of claim 1.

Schlange" bezeichnet wird. Derartige Verbindungselemente sind im allgemeinen als ein Dreieck ausgebildet. Die durch die Spannung der Bahn über ihre Breite hervorgerufenen seitlichen Belastungen wirken hauptsächlich auf den Scheitel des Dreiecks, an dem es mit der Führungseinrichtung verbunden ist. Durch diese seitlichen Belastungen besteht die Gefahr, dass sich die Materialbahn von dem Verbindungselement löst, dass sich Falten bilden oder dass die Bahn reißt.Web feed devices usually require the connection of a web of material to a guide device, which is generally referred to below

Such connecting elements are generally designed as a triangle. The lateral loads caused by the tension of the web across its width act mainly on the apex of the triangle at which it is connected to the guide device. The lateral loads result from this Danger that the material web detaches from the connecting element, that folds form or that the web breaks.

In addition, the connection of the triangle with the guide device is in this respect difficult than the triangle to avoid misalignment and / or Path shifts are aligned with the transport path of the material web got to. It is known to close the triangles at their apex with the guide device connect. As a result, the triangle can be rotated to a certain extent, which means that the Path at the triangle difficult. Since the triangle is not along the transportation path of the Material web is attached, alignment of the triangle with the web is difficult to to reach. In addition, it is not easy to close the edge of the triangle like this position that it coincides with the edge of the web.

These problems are exacerbated by the following factors: First, the Machine operators only have a small amount of space on the roll stand, and secondly, they have to instead of one work flat surface on a curved surface formed by the paper roll.

In US 5,039,742 is a conventional device for connecting a material web described with a guide device in which a flexible attached to the web Pull section is attached to a feed element by means of fastening clamps.

Accordingly, it is an object of the present invention to provide an apparatus for Feeding a web of material into a rotary printing press through which the Disadvantages described known devices of the prior art eliminated and a loosening of the material web, wrinkling in the web and tearing of the web prevented and the alignment of the feed triangle with respect to the transport path of the Material web and work in the limited space, especially in the Area of the curved surface formed by the paper roll can be facilitated.

This object is solved by the features of claim 1.

Further features of the invention emerge from the subclaims.

An inventive device for pulling a web into a Rotary printing press, which is a triangle that has one side with a predetermined length, a bottom and a hypotenuse, and a Includes the guide device is characterized in that the guide device for Guiding the feed triangle and the material web essentially along the entire predetermined length of one side of the triangle can be attached to this.

According to a further embodiment of the invention, a number of Fastening points are provided at which the triangle on the Guide device attached along the entire length of one side of the feed triangle becomes. In this way, the attachment points facilitate their predetermined position firstly, the alignment of the feed triangle and secondly, make it easy Attach and detach the feed triangle.

The feed triangle is preferably made of a reinforced material similar to one Fiberglass mat. The mat can, for example, be made of a rectangular mesh arranged fabric fibers exist. Since the material can be rough, it can also be one Have coating that prevents damage to the web on contact becomes. Conceivable materials for the mat contain z. B. aramid or carbon fibers. The Coating can e.g. B. from a polymer such. B. rubber or neoprene. At the preferred embodiment of the invention is part of the fibers in a first Grain direction parallel to the hypotenuse of the triangle, and a another part of the fibers, which is primarily the fixation of the first fibers in the Direction parallel to the hypotenuse of the triangle, but otherwise almost none Contribution to the absorption of the railway forces caused by the railway is in Arranged essentially perpendicular to the first fibers. By such The arrangement of the fibers creates a multitude of quadrilaterals that are parallel Fiber strands can be defined. The strands serve to reinforce the structure of the Triangle between the attachment points of the triangle on the guide device and the area where the web is attached to the triangle. In this way, one better shift of the load on the guide element and avoidance of one Displacement of the path causing rotation of the feed triangle reached.

In addition, a can be found on the underside of the feed triangle in close proximity to the web Stiffening attachment can be provided as a reinforcement along the width of the web works and prevents the web from slipping and wrinkling. The essay can preferably be designed to be flexible in the direction of transport of the web, so that it during the web feed can be bent around rollers. A preferred material for the stiffening insert is, for example, a polymer; the stiffening attachment can however, it can also be made of metal, provided that it does not come into contact with the rollers Leaves traces. For example, B. a thermoplastic, Delrin or nylon. The essay is preferably attached to the feed triangle such that it is an integral part is the same. The attachment can have a gap through which the web is threaded can to attach them to the triangle. The web can, for example, through the Gap pulled and then to itself with preferably double-sided adhesive tape be attached. The attachment can be used to prevent damage to the web Gap preferably have a rounded edge.

Alternatively, a terminal strip arrangement can also be arranged on the underside of the feed triangle be arranged by means of which the web is attached to the triangle. The Terminal strip arrangement can include terminal strips with a rounded cross-section, so preventing the web from tearing.

In a further embodiment of the invention, the triangle on the Guide device over in a row and preferably parallel to Guide device on the triangle arranged eyelets are attached. The eyelets can be in hooks arranged on the guide device, which the eyelets during of the web feed. The hooks can be designed such that they slide off the eyelets from the hooks are not possible during web feed. The hooks can also have an opening and closing function through which they hold the eyelets. The Effect is similar to that of a zipper. It can be provided that the Connection of the hooks with the eyelets for fastening the triangle to the Guiding device takes place automatically via an external device, for example in that the hooks are widened with the help of part of the device the eyelets are then placed over the hook, and then bent back in such a way that they jam the eyelets. The external Activation device can be used, for example, to fasten the triangle in the area of the roll stand and continue to remove the triangle on Folder can be arranged.

Instead of attaching the triangle using hooks and eyes, you can use one a further advantageous embodiment of the invention, a zipper is also provided his. This offers the advantage that - with a correspondingly small distance between the Teeth of the zipper - serves as an additional reinforcement. Also has a Zipper basically has a certain flexibility and is easy to open and close. It can also be a device for automatic fastening and Removal of the triangle can be provided, the zipper z. B. in the area the roll changer closes automatically and automatically in the area of the folder opens again.

In an advantageous development of the attachment described above by hooks and eyes can be used to attach the feed triangle to the guide device Attachment device can be provided, for example, a first section Guide the hook and a second guide section to hang the eyelets into the Can include hooks. A gap can preferably be formed in the first guide section through which the hooks can run.

The hanging device can be used to efficiently attach the feed triangle to the Guide device can be used without the eyelets manually in the associated hook must be hooked. Through the hanging device must Initiation of the fastening process only the first eyelet can be hooked in manually.

This hanging device is used to automatically insert a variety of eyelets into the the corresponding hook and so the triangle along one side on the Fasten the guide device. With the help of the device it is also possible that Remove the triangle. It can also be used with automatic unwinding devices for pulling in the feed triangle or take-up devices for removal and Interact storage of the feed triangle.

A method according to the invention for pulling a material web into a Rotary press includes the following steps: Deploy one Feed triangle, one side with a given length and one bottom has, attaching the web to the underside of the feed triangle and attaching the Retraction triangle along a guide device along substantially the entire predetermined length of the side of the feed triangle for guiding the feed triangle and the train.

The step of attaching the feed triangle to the guide device can in particular consist of the side of the triangle at given To attach attachment points to the guide device. The side of the Feed triangles can, for example, by means of hooks and eyes or a zipper can be removably attached to the guide device.

An additional step of the method involves providing one Stiffening attachment on the underside of the feed triangle and attaching the Material web at the feed triangle by threading the web through a gap in the Reinforcement attachment. Then the material web is preferably made using an adhesive glued to itself.

Alternatively, the method can also include the following step: providing one Terminal strip arrangement on the underside of the triangle, attach the material web to the underside of the feed triangle by clamping the material web on Retraction triangle using the terminal block arrangement. The terminal strips of the Terminal strip arrangement can be attached using screws or clamps.

In addition, it can also be provided that the hooks by means of a first Guide section of a suspension device and the eyelets by means of a second guide section of the suspension device can be hooked into the hook.

The features of the present invention will become apparent in the following description preferred embodiments in connection with the accompanying, below listed drawings explained in more detail.

Fig. 1

eine teilweise, schematische Draufsicht einer erfindungsgemäßen Bahneinzugsvorrichtung mit einem Einzugsdreieck, das an einer Führungseinrichtung und einer Materialbahn befestigt ist;

Fig. 2

eine detaillierte Draufsicht eines als eine Gewebematte ausgebildeten Einzugsdreiecks;

Fig. 3a

eine teilweise Draufsicht des an der Materialbahn befestigten Einzugsdreiecks;

Fig. 3b

eine teilweise, vergrößerte Draufsicht eines Abschnitts des in Fig. 3a gezeigten Einzugsdreiecks ohne Materialbahn;

Fig. 3c

einen Querschnitt in der in Fig. 3 gezeigten Pfeilrichtung entlang der Linie III-III;

Fig. 4a

eine teilweise Draufsicht eines mittels Haken und Ösen an der Führungseinrichtung befestigen Einzugsdreiecks;

Fig. 4b

eine teilweise, vergrößerte Draufsicht eines Abschnitts des in Fig. 4a gezeigten Einzugsdreiecks mit der Führungseinrichtung;

Fig. 4c

eine weitere teilweise, vergrößerte, perspektivische Schnittansicht, in der die Haken und Ösen näher gezeigt sind;

Fig. 5

eine teilweise Draufsicht des mittels eines Reißverschlusses an der Führungseinrichtung befestigen Einzugsdreiecks;

Fig. 6a

eine verkleinerte Draufsicht auf das mit einer Klemmleistenanordnung an der Materialbahn befestigte Einzugsdreieck;

Fig. 6b

eine Seitenansicht des in Fig. 6a gezeigten Einzugsdreiecks mit Klemmleistenanordnung und Materialbahn;

Fig. 6c

eine Querschnittsansicht der Klemmleisten, des Einzugsdreiecks und der Bahn;

Fig. 7a

eine Seitenansicht des Einzugsdreiecks, der Führungseinrichtung und der Einhängevorrichtung;

Fig. 7b

eine teilweise, vergrößerte Seitenansicht des Einzugsdreiecks, der Führungseinrichtung und der Einhängevorrichtung;

Fig. 7c

eine Schnittansicht des ersten Führungsabschnitts der Einhängevorrichtung; und

Fig. 7d

eine Rückansicht des ersten Führungsabschnitts.

Show it:

Fig. 1

a partial, schematic plan view of a web feed device according to the invention with a feed triangle, which is attached to a guide device and a material web;

Fig. 2

a detailed plan view of a triangle formed as a fabric mat;

Fig. 3a

a partial plan view of the feed triangle attached to the material web;

Fig. 3b

a partial, enlarged plan view of a portion of the feed triangle shown in Figure 3a without material web.

Fig. 3c

a cross section in the arrow direction shown in Figure 3 along the line III-III.

Fig. 4a

a partial plan view of a retraction triangle attached to the guide device by means of hooks and eyes;

Fig. 4b

a partial, enlarged plan view of a portion of the triangle shown in Figure 4a with the guide means.

Fig. 4c

another partial, enlarged, perspective sectional view, in which the hooks and eyes are shown in more detail;

Fig. 5

a partial plan view of the retraction triangle fastened to the guide device by means of a zipper;

Fig. 6a

a reduced plan view of the retraction triangle attached to the material web with a terminal strip arrangement;

Fig. 6b

a side view of the draw-in triangle shown in Figure 6a with terminal block arrangement and material web.

Fig. 6c

a cross-sectional view of the terminal strips, the feed triangle and the web;

Fig. 7a

a side view of the feed triangle, the guide device and the hanging device;

Fig. 7b

a partial, enlarged side view of the feed triangle, the guide device and the hanging device;

Fig. 7c

a sectional view of the first guide portion of the suspension device; and

Fig. 7d

a rear view of the first guide section.

Fig. 1 shows a first embodiment of a device according to the invention Feeding a material web into a rotary printing machine. The device comprises a triangle 1, which is attached to a track 3 and a guide device 2. The triangle 1 shown in the overall view in FIG. 1 is in the manner of Guide device 2 attached that it in the direction indicated by the arrow can be performed and forms a support for the web 3. A stiffening attachment 4 creates additional support across the width of web 3 and serves as a fastening interface between the web 3 and the triangle 1.

Fig. 2 shows the orientation of the reinforcement of the feed triangle 1, i. H. the in Essentially parallel to the hypotenuse 7 of the triangle 1 and essentially orthogonal to the hypotenuse 7 of the triangle 1 reinforcing fibers of the Mat material. The triangle 1 is made of a fabric mat. For distribution the tensile load 8 caused by the web tension has a reference to the mat the hypotenuse 7 of the triangle 1 parallel fiber direction 5 and one with respect to Hypotenuse 7 of the triangle 1 orthogonal fiber direction 6. The mat is preferably made of a glass fiber-like material, e.g. B. carbon fiber reinforced Plastic, manufactured.

In Fig. 3a reinforcement and fastening arrangements of the triangle 1 are closer shown. The draw-in triangle 1 is connected to the material web 3 via a stiffening attachment 4 connected. The stiffening attachment 4 is by means of an adhesive and / or Sewing connected to the triangle 1, which is indicated by the seam 9. The Web 3 is threaded through a gap 10 and preferably by means of double-sided Adhesive tape 11 glued to itself. In Fig. 3b the gap 10 is without a threaded web shown. As shown in Fig. 3c, the gap 10 has an edge portion 12 from one rounded material on which a cut of the web due to the thin Material of the stiffening attachment 4 counteracts.

In Fig. 4a is a hook and eye arrangement 13 for attaching the triangle 1 the guide device 2 shown. The triangle 1 is along the length of a Side attached to the guide device 2. As shown in Fig. 4b, an eyelet 14 in hooked a hook 15. In Fig. 4c it can be seen that the hook 15 one in Transport direction of the material web 3 facing bent section 16 includes which the eyelet 14 is held on the hook 15 and a slipping of the Retraction triangle 1 prevented by the guide device 2 when the web at Pulling in under tension. The shape of the hook 15 allows advantageously Way also a simple removal of the triangle 1 after the completion of Feed process.

5 is a zipper arrangement according to the invention for fastening the Feed triangle 1 shown. The zipper 17 shown in this figure has same function as the hook and eye arrangement 13. The zipper 17 is with Adhesive 18 and / or by sewing (seam 19) on the guide device 2 and the Triangle 1 attached. The position of the adhesive 18 and the seam 19 with respect to the Zipper 17 can of course also reverse to the arrangement shown his. Of course, both attachments can also be made by adhesive or by Sewing is done.

6a shows an attachment of the draw-in triangle 1 to the web 3 according to the invention by means of a terminal block arrangement 20. As shown in FIG. 6b, the Terminal strip assembly 20 two terminal strips 21, 22, between which the Feed triangle 1 and the material web 3 are clamped. The terminal strips 21, 22 are for example by means of preferably countersunk screws 23 arranged in grooves and / or clamps 24 clamped together. As shown in Fig. 6c, the Terminal strips 21, 22 preferably have a convex cross section.

7a is a side view of the triangle 1 and the guide device 2. Zum Fastening the triangle 1 on the guide device 2 is an inventive External hooking device is provided, which attaches the triangle 1 to the Guide device 2 enables each eyelet 14 to be manually inserted individually into the associated hook 15 must be hooked.

The attachment device comprises for attaching the feed triangle 1 to the Guide device 2 has a first guide section 25 for the triangle 1 and a second guide section 26 for the guide device 2. As shown in Fig. 7b the first guide portion 25 aligns the eyelets 14 relative to the hooks in the manner 15 from that the end of the hook 15 can be passed through the eyelets 14. Again Drawing can also be seen, the guide device 2 during this Process held by the second guide 26 in its predetermined guide path. In Fig. 7c and 7d is shown how a hook 15 during the threading process by a gap 27 formed in the first guide section 25 runs. After hanging the eyelets 14 into the hook 15, the triangle 1 and the guide device 2 are parallel aligned so that the eyelet 14 is hooked onto the hook 15. This way, a Slipping of the triangle 1 from the guide device 2 during the Rail transport prevented.

List of reference numbers

1

Feed triangle

2nd

Management facility

3rd

Material web

4th

Stiffening attachment

5

parallel grain

6

orthogonal fiber direction

7

Feed triangle hypotenuse

8th

burden

10th

gap

11

duct tape

12th

Edge section

13

Hook and eye arrangement

14

Eyelets

15

hook

16

curved section

17th

zipper

18th

adhesive

19th

Sewn

20th

Terminal block arrangement

21

Terminal block

22

Terminal block

23

Screws

24th

Clamps

25th

first management section

26

second guide section

27

gap

Claims (15)

Device for pulling a material web (3) into a web-fed rotary printing press, with a feed triangle (1) having a first side of a predetermined length and a hypotenuse, to which the leading end of the material web (3) can be fastened, and with a guide device (2),
characterized, that the feed triangle (1) is detachably connected to the guide device (2) substantially along the entire predetermined length of the first side of the feed triangle (1). Device according to claim 1,
characterized, that the first side of the draw-in triangle (1) can be fastened to the guide device (2) at predetermined fastening points. Device according to one of the preceding claims,
characterized, that the draw-in triangle (1) can be fastened to the guide device (2) by means of hooks (15) and eyelets (14). Device according to one of claims 1 or 2,
characterized, that the draw-in triangle (1) can be fastened to the guide device (2) by means of a zipper (17). Device according to one of the preceding claims,
characterized, that the feed triangle (1) is made of a reinforced material. Device according to one of the preceding claims,
characterized, that the feed triangle (1) consists of a fabric material. Apparatus according to claim 6,
characterized, that the fabric material of the draw-in triangle (1) contains fibers running essentially parallel to the hypotenuse (7). Device according to claim 7,
characterized, that the fabric material additionally contains fibers running essentially perpendicular to the hypotenuse (7). Device according to one of the preceding claims,
characterized, that the feed triangle (1) consists of a fiberglass-like material. Device according to one of the preceding claims,
characterized, that the feed triangle (1) consists of a coated, rough material. Device according to one of the preceding claims,
characterized, that on the underside of the feed triangle (1) there is a stiffening attachment (4) which is flexible in the transport direction of the material web (3) and via which the material web (3) can be fastened to the feed triangle (1). Device according to claim 11,
characterized, that a gap (10) is formed on the stiffening attachment (4), through which the leading end of the material web (3) can be passed for attachment to the feed triangle (1). Device according to one of claims 1 to 10,
characterized, that the material web (3) is fastened to the feed triangle (1) by means of a terminal strip arrangement (20). Device according to claim 3,
characterized, that an external hooking device (13) is provided, which comprises a first guide section (25) for hooking in the eyelets (14) and a second guide section (26) for guiding the hooks (15), and via which the guide device (2) in the Is performed in such a way that the eyelets (14) are automatically hooked into the hooks (15). Device according to claim 14,
characterized, that the external hooking device (13) is arranged in the area of the roll changer of the printing press.

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