EP1211213A2 - Device and method for switching between collection operation mode and simple operation mode of a folding apparatus - Google Patents

Abstract

The folding machine has a cam with a cam follower which controls a holder for the edges of the signatures. For operating in single copy mode raised sections (210, 211) are inserted into the path of the cam follower, while for collating lower sections (213, 214) with the same radius of curvature as the path of the cam follower are inserted into it. An Independent claim is included for a method for changing a folding machine from single copy to collating mode as described above.

Description

The present invention relates to printing presses and, more particularly, to a folder a printing press.

Web-fed rotary printing machines print on a continuous web of material, e.g. made of paper. In a folder of a printing machine, the continuous web is then in one Cutting unit cut and folded in signatures.

One way to fold cut signatures is to use a folder with a rotating folding knife that includes a folding cylinder with folding swords, the provide the signature with a fold. The fold is directed from the fold swords towards two rotating folding rollers formed, the signature along the fold at a nip grasp, fold and pass on the folded product, e.g. to one Disk unit.

Chapter 6 (pages 136 to 154) of the book "Newspaper Presses" by William Braasch describes the two basic versions of folders with rotating folding knives: 2 Permit folders and 3 to 2 folders. In a 2 to 1 folder with one rotating folding knives are two folding swords spaced 180 degrees on the Folding cylinder arranged. A signature is held by needles that are 90 degrees in front of the Falzschwertanordnung are arranged, and if the center of the signature the When folding rollers are reached, the folding sword presses the signature into the middle of the signature Folding rollers to form a fold. So there are two in a 2 to 1 folder Needle sets spaced 180 degrees to hold the edges of the products to be folded arranged. In a 3 to 2 folder, three sets of needles are offset by 120 degrees arranged. Folded sword sets act on the center of a signature to make a fold by pressing the center point into a pair of folding rollers.

To increase the number of pages in a product, folders are used in one Printing machine a method of collecting sheets to make a larger product form. In order to be able to collect the sheets, the folding sword is used shut down so that it does not fold into the pressure rollers and the needle, that holds the leading edge of the signature is not withdrawn. The decommissioning, which in Collective mode of operation happens, allowing the product to be on a folding cylinder remain so that the folder is equipped with additional sheets, as the folding cylinder executes further rotations. When two sheets have been collected from the cylinder, the two sheets can then be released from the needle and used the Folded swords are folded. The collective mode is the counterpart to simple operating mode during which the folding knives do not stand still and none Products can stay on the cylinder so that every needle with every turn is withdrawn. Switching from collective mode to simple Operating mode or vice versa is called changeover.

A way of moving the needles on the folder with a rotating folder consists in the use of a rotating cam, on its guideway or Cam track scan a cam. The cam followers move along a closed guideway limited in the radial direction. Subsequently this rotating cam is also known as a cam box. Fig. 1 shows the simple Operating mode in a 3 to 2 folder 10 with a rotating folder from the State of the art with a cam box for moving the needles. The cam does half a turn for every one-third turn of the needles and cam followers. The needles 1, 2 and 3 are connected to the cam followers 11, 12 and 13, respectively are activated by these and thus rotate together with them about the axis of the Folder, although the cam followers 11, 12, 13 generally the needles 1, 2, 3 are a few degrees behind due to the structure of the connection. The Cam follower 11, 12, 13 and the movement of the rotating cam 20 is under the Folder 10 shown for clarity. If a cam follower 11, 12 or 13 meets one of the two raised sections 21 or 22 in the cam box, the respective needle 1, 2 or 3 is withdrawn. Thus, in section A of FIG. 1 the needle 3 is retracted when the cam follower 13 hits the raised portion 21. The signature 100 is then released from the needle 3, inserted and by the Folding rollers 30 folded. In section B, the needle 2 is withdrawn when the increased Section 22 (which moves faster than cam follower 12) and cam follower 12 meet and the next signature 101 is released, inserted and folded. In section C, the needle 1 is retracted when the cam follower 12 on the Section 21 hits. The next signature 102 is then released by the needle 1. In Section D, the needle 3 is retracted and the raised section 22 hits the cam follower 13. The cam followers can comprise two parallel rollers, which in related grooves run slightly offset to each other.

To switch to the collective mode, the operator sets one of the Folded swords off, the machine stops and removes one of the raised cam sections 21, 22 and replace it with a non-raised section. Since the cam box and moving the cam followers, it has generally not been possible to get one automatic switching between collective operating mode and simple operating mode to enable.

Fig. 2 shows a collection mode of operation from the prior art, the increased Section 22 was removed and replaced with a non-raised section 23. In Section I of FIG. 2 does not retract the needle 2 when a signature 104 is Folding rollers 30 happen because the cam follower 12 is on the non-raised portion 23 hits who does not operate the needle 2. One of the folding swords, based on another Mechanism has been deactivated, no further insertion process is carried out. So signature 104 remains on folder 10, as signature 105 previously did. As shown in section II, a new second signature 106 is added to the signature 105, when the cam follower 11 reaches the raised portion 21. The needle 1 then releases the leading edge of signatures 105 and 106. The two signatures 105,106 that are correct have been merged, are then activated by the folded sword inserted and folded by the folding rollers 30. As shown in Section III the signature 107 continues to be held by the needle 3 on the folder 30 since the elevated section 23 happens cam follower 13. A new one is added to signature 104 Signature 108; the two are then folded together when inserted are. The needle 2 is withdrawn at the same time as the cam follower 12 and the raised section 21 meet in section IV. The collecting process continues in this way.

Switching from a simple to a collective operation using a Cam box as shown in Figs. 1 and 2, however, is time consuming and complicated. On The operator changes the components individually by hand, i.e. he exchanges the elevated one Section 22 against the non-raised section 23. It can also be valuable Time is lost if the parts do not fit properly or are not inserted correctly become.

In US 5,797,319 is a drive device for a folder with one on one Folding knife shaft attached folding knife described in a printing press. On Drive gear drives a folding knife shaft gear. The drive device comprises also a plunger with an intermediate gear between the gear of the Folding knife shaft and the drive gear and a device for moving the Plungers between a first longitudinal position and a second longitudinal position. In the in the first longitudinal position, the intermediate gear meshes with the folding blade shaft gear, while in the second longitudinal position the intermediate gear is not in register with the Drive gear is. The drive device can also have a cam and a switching ring comprise, which are put into operation in response to an axial movement of the plunger become. During the outward movement of the plunger, caused by a Coil spring is caused, the cam track is touched by the needle, causing the Cam circuit is made to rotate. The rotation of the cam enables one further outward axial translational movement of the plunger as the needle slidably engages various portions of the cam track as it continues to rotate. A first stop in the cam track corresponds to the plunger in the first longitudinal position and a second stop in the cam track corresponds to the plunger in the second longitudinal position.

The device according to the above patent does not address the problem that To prevent retraction of the needles during a changeover, but turns only the insertion movement. In addition, the device requires a complex one Arrangement of parts.

US 6,093,139 (which is not necessarily prior art to this application describes a product cutter for flat material. A first and second cam followers are assigned to a corresponding first and second cam and move a lever and another lever around a first and a second Pivot axis. Due to the first cam, a product-encompassing element is created on the Surface of a cylinder moved in a direction opposite to the direction of rotation. On another lever, which is assigned to the second cam, opens and closes this product-reaching element. The folder can e.g. in collective mode and / or be operated in simple operating mode. The arrangement according to this Patent apparently requires replacement of the cam to switch between Allow collective operating mode and simple operating mode.

It is the object of the present invention a simplified device and a simplified procedure for switching a folder from the simple Operation mode to create the collective operation mode.

This object is achieved according to the invention by a folder with the features according to Claims 1 and / or solved by a method with the features according to claim 14. Further features are contained in the subclaims.

According to the invention, a folder with a cam has a cam follower path, at least one cam follower in the cam follower path and at least one Holding device for holding an edge of a signature, wherein the holding device of which at least one cam follower is actuated. It is characterized in that the cam is a movable segment with a first actuating part and a second Has actuating part which are optionally movable in the cam follower path.

einer Nocke mit einem Nockenstößelpfad und einem bewegbaren Segment, welches einen ersten Betätigungsteil und einen zweiten Teil umfasst, wobei der erste Betätigungsteil und der zweite Teil wahlweise in den Nockenstößelpfad bewegbar sind,

mindestens einem Nockenstößel in dem Nockenstößelpfad; und

mindestens einer Haltevorrichtung zum Halten einer Kante einer Signatur, wobei die Haltevorrichtung von dem mindestens einen Nockenstößel betätigt wird.

In other words, the present invention provides a folder comprising:

a cam with a cam follower path and a movable segment, which comprises a first actuating part and a second part, the first actuating part and the second part being optionally movable in the cam follower path,

at least one cam follower in the cam follower path; and

at least one holding device for holding an edge of a signature, the holding device being actuated by the at least one cam follower.

The folder advantageously allows easy switching from one Collective operating mode to a simple operating mode in a folder with one rotating folding knife.

The first actuating part preferably comprises a raised section and the second Part is a non-raised curved section with a curved radius that corresponds to one Main portion of the cam follower path corresponds.

The cam is preferably a cam box and includes the first actuating part preferably a raised section and a corresponding cut out Section.

The cam preferably has a second raised section which is axially stationary in the cam follower path is arranged.

The movable segment can move axially along a cam bracket of the cam be moved. A pair of bearings preferably pass through slots in the Cam console to control the movement of the movable segment in relation to the Allow cam console. The bearing can be moved through a cam segment housing activated by the air cylinders.

The folder can further comprise at least one holding needle to the lock movable segment in one of two positions. Preferably that movable element has at least two holes to cooperate with one of the at least one holding pin. An air cylinder can actuate the holding needle and to solve.

The folder is preferably a 3 to 2 folder with a rotating folder.

The folder of a printing press according to the invention can be particularly advantageous be assigned. In other words, a printing press according to the invention has a folder according to the invention.

Bewegen eines bewegbaren Segments der Nocke, so dass ein erhöhter Abschnitt des bewegbaren Segments in einem Nockenstößelpfad liegt, um ein Einstellen des Falzapparats auf den einfachen Betriebsmodus zu ermöglichen, und

Bewegen des bewegbaren Segments der Nocke, so dass ein nicht erhöhter Abschnitt des bewegbaren Segments in dem Nockenstößelpfad der Nocke liegt, um ein Einstellen des Falzapparats auf den Sammelbetriebsmodus zu ermöglichen.

The present invention also provides a method for switching a folder from a simple operating mode to a collective operating mode, the folder being operated by the cam and comprising the following method steps:

Moving a movable segment of the cam so that a raised portion of the movable segment lies in a cam follower path to enable the folder to be set to the simple mode of operation, and

Moving the movable segment of the cam so that a non-raised portion of the movable segment lies in the cam follower path of the cam to allow the folder to be set to the collection mode of operation.

The steps of moving are preferably performed automatically using Air cylinder executed.

The method preferably includes the step of locking the movable Segments in the collective operating mode or the simple operating mode under Use a holding pin.

The steps of moving are preferably axial Movement movement of the movable segment carried out.

Bewegen eines Nockenstößels um einen Nockenstößelpfad einer Nocke,

Lösen und Halten von Signaturenvorderkanten auf dem Falzapparat mit einem rotierenden Messer in Abhängigkeit von der Bewegung der Nockenstößel auf dem Nockenstößelpfad, und

Bewegen eines bewegbaren Segments der Nocke durch eine Betätigungsvorrichtung, um den Nockenstößelpfad zu verändern und den Falzapparat mit dem rotierenden Falzmesser vom einfachen Betriebsmodus auf Sammelbetriebsmodus umzustellen.

Fig. 1

zeigt eine schematische Seitenansicht eines 3 zu 2-Falzapparats mit einem rotierenden Falzmesser aus dem Stand der Technik bei der einfachen Produktion; und

Fig. 2

zeigt eine schematische Seitenansicht eines 3 zu 2-Falzapparats mit einem rotierenden Falzmesser aus dem Stand der Technik bei der Sammelproduktion.

Die Erfindung wird nachfolgend mit Bezug auf die Zeichnungen anhand bevorzugter Ausführungsformen beschrieben.

The present invention also provides a method for operating a folding apparatus with a rotating folding blade, which comprises the following method steps:

Moving a cam follower around a cam follower path of a cam,

Loosening and holding signature leading edges on the folder with a rotating knife depending on the movement of the cam followers on the cam follow path, and

Moving a movable segment of the cam through an actuator to change the cam follower path and to change the folder with the rotating folder from simple mode to collective mode.

Fig. 1

shows a schematic side view of a 3 to 2 folder with a rotating folder from the prior art in simple production; and

Fig. 2

shows a schematic side view of a 3 to 2 folder with a rotating folder from the prior art in the collective production.

The invention is described below with reference to the drawings based on preferred embodiments.

Fig. 3

eine schematische Frontansicht des Nockenkastens des erfindungsgemäßen Falzapparats im einfachen Betriebsmodus,

Fig. 4

eine schematische Frontansicht des Nockenkastens aus Fig. 3 im Sammelbetriebsmodus, und

Fig. 5

eine schematische Rückansicht des Nockenkastens aus Fig. 4.

The drawings show:

Fig. 3

1 shows a schematic front view of the cam box of the folder according to the invention in simple operating mode,

Fig. 4

is a schematic front view of the cam box from Fig. 3 in the collection mode, and

Fig. 5

3 shows a schematic rear view of the cam box from FIG. 4.

3 shows a schematic front view of a cam box 200 according to the invention in simple production mode. The cam box 200 can have a pin cylinder a 3 to 2 folder with a rotating folder to work together Control movement of the puncture needle, as in relation to the embodiment according to the State of the art from FIG. 1 and FIG. 2 is described. The cam box 200 has one raised first section 210 and a second movable cam segment 201, which in axial direction between a simple production mode position and one Collective production mode position can be moved. The cam segment 201 can be moved within a cam console 202, which has an upper section and a lower portion 222. The cam segment 201 comprises an elevated one Section 211 and a corresponding cut section 212, which in the Generally shaped in the manner of section 210. A not raised section with the curved parts 213, 214 is next to the raised portion 211 and the Section 212 arranged. The curved section 230, the curved section 210 and the curved segment 201 form the rotating track of the cam box 200 to interact with the cam followers to activate the puncture needles or others the signature-holding devices of the folder with a rotating Folding blades.

The segment 201 can be between a simple production mode as in FIG. 3 shown where the raised section 211 and section 212 are in the path of the Cam followers are located, and a collective production mode as shown in Fig. 4 move where the raised section 211 and section 212 over the path of the Cam followers have been pushed out to activate with the cam followers the puncture needles or other devices holding the signature.

To change the operating mode from simple production to collective production switch, a pair of first air cylinders 204 activates a pair of levers 205, which then turn on A pair of holding needles 203 releases, which is pivotable about a pair of pivot pins 250. The couple Holding needles 203 in turn release cam segment 201. After the cam segment 201 has been released, a second pair of air cylinders 206 is inserted Cam segment housing 207, which is connected to the cam segment 201. The Cam segment housing 207 is paired with cam segment 201 Bearings 208 connected (see FIG. 5, the housing 207 not for clarification is shown), which are fastened on the cam segment 201, and thus expresses this Cam segment in the cam console forwards. If the cam segment 201 the reached the desired position, the first pair of air cylinders 204 stops, the pair of levers 205 to activate and a pair of springs 209 (see FIG. 5) presses the pair of holding needles 203 into the Cam segment 201, the cam segment 201 in the Collective production mode position is locked.

4 shows a schematic front view of the cam housing 200 in Collect production mode. To change the operating mode from bulk production to simple To switch production, the pair of first cylinders 204 again actuates the pair of levers 205, which then remove the pair of needles 203 using the pivot pins 250 to To release cam segment 201. After the cam segment has been released, this pulls second pair of air cylinders 206 the cam segment housing 207. Das Cam segment housing 207 pulls on the bearing pair 208 (see FIG. 5), which on the Cam segment 201 is attached and thus moves the cam segment 201 within the Cam console 202 backwards. When the cam segment 201 the desired position reached, the first pair of air cylinders 204 stop operating the pair of levers 205 and that Pair of springs 209 (see FIG. 5) presses the pair of needles 203 into the holes 240 in the Cam segment 201, the cam segment 201 in the simple Operating mode position is locked.

FIG. 5 shows a schematic rear view of the cam box 200, as shown in FIG (Collective mode), the cam housing 207 is not shown. The couple Bearing 208 and the pair of springs 209 are visible.

The present invention enables automatic switching from simple Operating mode to collective operating mode and vice versa.

List of reference numbers

1,2,3

needle

10

folding

11, 12, 13

cam follower

21, 22

raised section

23

not raised section

30

folding rollers

102, 104, 105, 106, 107, 108

signature

200

cam box

201

second movable cam segment

202

cam console

203

Pair of holding needles

204

Pair of first air cylinders

205

Pair of levers

206

second pair of air cylinders

207

Cam segment housing

208

Pair of bearings

209

Pair of feathers

210

first elevated section

211

raised section

212

cut out section

213, 214

curved section

222

lower section

230

curved section

240

holes

250

Pair of pivot pins

Claims (18)

Folder with
a cam with a cam follower path, at least one cam follower in the cam follower path and at least one holding device for holding an edge of a signature, the holding device being actuated by the at least one cam follower,
characterized in that the cam is a movable segment with a first actuator and
has a second actuating part, which are optionally movable in the cam follower path. Folding apparatus according to claim 1,
characterized in that the first actuating part comprises a raised section (210, 211) and the second part is a non-raised curved section (213, 214) with a curve radius similar to a main section of the cam follower path. Folding apparatus according to claim 1 or 2,
characterized in that the cam is a cam box (200). Folding apparatus according to claim 1, 2 or 3,
characterized in that the first actuating part comprises a raised section (210, 211) and a corresponding cut-out section (212). Folding apparatus according to one of the preceding claims,
characterized in that the cam includes a second raised portion (211) that is stationary with respect to the cam follower path. Folding apparatus according to one of the preceding claims,
characterized in that the movable segment is axially displaceable along the cam bracket (202) of the cam. Folding apparatus according to one of the preceding claims,
characterized in that the folder further comprises a pair of bearings (208) that pass through the slots in the cam bracket (202) to allow movement of the movable segment with respect to the cam bracket (202). Folding apparatus according to one of the preceding claims,
characterized in that the folder further comprises at least one air cylinder (204) for moving the movable segment. Folding apparatus according to one of the preceding claims,
characterized in that the folder further comprises at least one holding needle (203) for locking the movable segment in one of the two positions. Folding apparatus according to claim 9,
characterized in that the movable segment comprises at least two holes (240) for cooperation with one of the holding needles (203). Folding apparatus according to one of the preceding claims,
characterized in that the folder further comprises an air cylinder (204) for switching the at least one holding needle (203). Folding apparatus according to one of the preceding claims,
characterized in that the folder is a 3 to 2 folder with a rotating folder. Printing machine with a folder,
marked by
a folder according to one of the preceding claims. Method for switching a folder from the simple operating mode to the collective operating mode, the folder being operated by a cam,
marked by Moving a movable segment of the cam so that a raised portion (210, 211) of the movable segment lies in the cam follower path of the cam to enable a simple mode of operation of the folder, and Moving the movable segment of the cam so that a non-raised portion of the movable segment lies in the cam follower path of the cam to enable a collective mode of operation of the folder. The method of claim 14
characterized in that the moving steps are carried out using air cylinders (204, 206). A method according to claim 14 or 15,
characterized in that the step of locking the movable segment in the collection mode or simple mode comprises using a holding pin (203). The method of claim 14, 15 or 16,
characterized in that the steps of moving are carried out by an axial sliding movement of the movable segment. Method for operating a folder with a rotating folder
marked by
the following process steps: Moving a cam follower around a cam follower path of a cam; Releasing and holding the leading edges of signatures on the folder with a rotating folder depending on the cam follower moving on the cam follower path; and Moving a movable segment of the cam through an actuator to change the cam follower path and to switch the folder from simple mode to collective mode with a rotating knife.

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