EP1211213B1 - 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 a folding apparatus a printing machine and a method for switching a folding apparatus from a collective mode of operation to a simple mode of operation.

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

One way to fold cut signatures is to use a folder with a rotating folding blade comprising a folding cylinder with folding blades, the provided the signature with a fold. The fold is from the folding blades in the direction formed two rotating folding rollers, the signature along the fold at a gap take the fold and pass 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 blades: 2 Adjacent folders and 3 to 2 folders. In a 2 to 1 folder with one rotating folding blades are two folding blades spaced 180 degrees apart 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 blade presses the signature at its center point into the Folding rollers to form a fold. Therefore, in a 2 to 1 folder, there are two Needle sets 180 degrees apart 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. False sword sets act on the midpoint of a signature to close a fold create by pressing the center into a pair of folding rollers.

To increase the number of pages of a product, using folders in one Pressing a method of collecting sheets to a larger product too form. In order to perform the collection of the bow, the folding sword is shut down so that it does not fold into the pressure rollers and the needle, which holds the leading edge of the signature, is not retracted. The decommissioning, the im Collective mode of operation happens, allowing the product to move to a folding cylinder remain so that the folder is equipped with additional sheet, as the folding cylinder performs more turns. When two sheets have been collected from the cylinder, The two sheets can then be released from the needle and based on the Folding blades are folded. The collective mode of operation is the counterpart to simple operating mode, during which the folding blades do not stand still and no Products can stay on the cylinder, leaving each needle at every turn is withdrawn. Switching from collective mode to simple Operating mode or vice versa is called changeover.

A way to move the needles on the folder with a rotating folding blade consists in the use of a rotating cam, on its guideway or Cam track Cam followers scan a cam. The cam followers move along a closed, limited in the radial direction guideway. Subsequently This rotating cam is also called a cam box. Fig. 1 shows the simple one Operating mode in a 3 to 2 folder 10 with a rotating folding blade from the Prior art with a cam box for moving the needles. The cam makes a half turn with each one-third turn of the needles and the cam followers. The needles 1, 2 and 3 are respectively connected to the cam followers 11, 12 and 13 and are activated by these and thus rotate together with these around the axis of Folder, although the cam followers 11, 12, 13 generally the needles 1, 2, 3 due to the structure of the connection are subordinate by a few degrees. The Cam followers 11, 12, 13 and the movement of the rotating cam 20 is below the Folder 10 is displayed for clarity. When a cam follower 11, 12 or 13 hits one of the two raised portions 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 retracted when the cam follower 13 strikes the raised portion 21. The signature 100 is then released from the needle 3, inserted and from the Folding rollers 30 folded. In section B, the needle 2 is retracted when the raised Section 22 (which moves faster than cam follower 12) and cam follower 12 meet each other, 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 applies. The next signature 102 is then released from the needle 1. In Section D, the needle 3 is retracted and the raised portion 22 hits the cam follower 13. The cam followers may comprise two parallel rollers, which in mating grooves slightly offset from each other.

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

FIG. 2 shows a prior art collection mode of operation, the increased one Section 22 has been removed and replaced by a non-elevated section 23. In Section I of Fig. 2, the needle 2 is not retracted when a signature 104 the Falzwalzen 30 happens because the cam follower 12 on the non-elevated portion 23rd that does not actuate the needle 2. One of the folding-swords, based on another Mechanism has been disabled does not perform any further insertion process. So the signature 104 remains on the folder 10 as the signature 105 did previously. As shown in Section II, the signature 105 is replaced by a new second signature 106, when the cam follower 11 reaches the raised portion 21. The needle 1 then releases the leading edge of the signatures 105 and 106. The two signatures 105,106, the right one are then merged, then by the activated folding sword inserted and folded by the folding rollers 30. As shown in Section III the signature 107 still held by the needle 3 on the folding apparatus 30, since not elevated section 23 cam follower 13 happens. The signature 104 comes a new Signature 108; the two are then folded together when they have been inserted are. The needle 2 is retracted at the same time as the cam follower 12 and the raised portion 21 in Section IV meet. The collection process will continue 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. One Operator adjusts the components one by one by hand, i. he exchanges the raised one Section 22 against the non-elevated portion 23 from. In addition, valuable Time will be lost if the parts do not fit properly or are not inserted properly become.

In US 5,797,319 is a drive device for a folding apparatus with a on a Folding blade mounted folding blade described in a printing press. One Drive gear drives a Falzmesserwellenenzahnrad. The drive device comprises Also, a plunger with an intermediate gear between the gear of the Folding blade shaft and the drive gear and a device for moving the Plunger between a first longitudinal position and a second longitudinal position. In the first longitudinal position of the intermediate gear meshes with the Falzmesserwellenenzahnrad, while in the second longitudinal position, the intermediate gear not in register with the Drive gear is. The drive device can also be a cam and a switching ring which operate 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 rotated. The rotation of the cam allows a 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 Retracting the needles during a changeover to prevent, but turns only to the insertion movement. In addition, the device requires a complex Arrangement of the parts.

US 6,093,139 describes a product cutting device for flat material. A first and second cam followers are associated with a respective 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-engaging element on the Surface of a cylinder moves in a direction opposite to the direction of rotation. One another lever, which is assigned to the second cam, opens and closes this product-engaging element. The folder may e.g. in collective mode and / or operated in the simple operating mode. The arrangement after this Patent apparently requires an exchange of the cam to switch between To enable collective operation mode and simple operation mode.

DE 195 30 956 A1 discloses a device for changing over a collecting cylinder from collective production to non-collection production (simple operation mode) on one Folder. Retaining elements for recording signatures on the circumference of the Collecting cylinders are movable by actuators. The actuators are operated by means of a control cam or cam: The control cam has a first Tread on which a movement of the holding elements in the operating mode "non-collecting" generated, and has a second tread, which is a movement of the retaining elements in Operating mode "Collect" generated. The touch rollers, which the contour of the cam follow, can be parked and each one to one of the two treads Be turned control cam, so that vary depending on the operating mode Let operating times of the holding elements realize.

In US 3,865,361 the conversion of a collecting cylinder of a folder of Collective production on non-collection production (simple operation mode) described. The collecting cylinder has holding elements for signatures in the form of holding needles, the operated by means of a scanned by an element control cam with two control surfaces can be. One of the two control surfaces causes the operation of the holding needles for the Non-collection production, the other of the two control surfaces causes the operation of the Holding needles for collective production. To a conversion of the folder to perform the control cam is moved axially relative to the collecting cylinder, so that the The cam scanning element from one of the two control surfaces to the other of the two Control surfaces passes.

It is the object of the present invention, a simplified device and a simplified method for switching a folder from the simple Operating mode to create the collective mode.

This object is achieved according to the invention by a folding apparatus with the features Claims 1 and solved by a method having the features according to claim 13. Further features are contained in the subclaims.

According to the invention, a folding apparatus 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, wherein the holding device is actuated by the at least one cam follower. It is characterized by the fact that the cam a movable segment with a first actuating part and a second Actuating part which are selectively movable in the cam follower path.

In other words, the present invention provides a folder with: a cam having a cam follower path and a movable segment which has a first actuating part and a second part, wherein the first actuating part and the second part is selectively 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, wherein the Holding device is actuated by the at least one cam follower.

The folder advantageously makes it easy to switch from one Collective mode of operation on a simple operating mode in a folder with a rotating folding blade.

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

The cam is preferably a cam box and the first actuating part comprises preferably a raised portion and a corresponding cut-out Section.

The cam preferably has a second raised portion axially fixed in is arranged the cam follower path.

The movable segment may be in the axial direction 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 To allow cam console. The bearing can be moved through a cam segment housing which is activated by the air cylinders.

The folder may further comprise at least one holding needle to hold the movable segment in one of the two positions to lock. Preferably, this has movable element at least two holes to interact with one of at least one holding needle. An air cylinder can actuate the holding needle and to solve.

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

With particular advantage, the folding apparatus according to the invention of a printing press be assigned. In other words, a printing press according to the invention has a folding apparatus 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 of switching a folder from a simple mode of operation to a collective mode of operation, wherein the folder is actuated by the cam and comprises the steps of:

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

Moving the movable segment of the cam such that a non-elevated portion of the moveable segment lies in the cam follower path of the cam to permit adjustment of the folder 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 one Segments in Collective Mode or Simple Mode under Use of a holding needle.

The steps of moving are preferably by an axial Displacement movement of the movable segment executed.

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.

The present invention also preferably provides a method of operating a folder with a rotary folding blade comprising the following steps:

Moving a cam follower about a cam follower path of a cam,

Releasing and holding signature front edges on the folder with a rotating knife in response to movement of the cam followers on the cam follower path, and moving a movable segment of the cam through an actuator to change the cam follower path and the folding blade with the simple folding mode folding blade To switch to collective mode of operation.

Fig. 1

shows a schematic side view of a 3 to 2 folding apparatus with a rotary folding blade of the prior art in the simple production; and

Fig. 2

shows a schematic side view of a 3 to 2 folding apparatus with a rotating folding blade of the prior art in the collection production.

The invention will be described below with reference to the drawings with reference to preferred Embodiments described.

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.

In the drawings show:

Fig. 3

a schematic front view of the cam box of the folding apparatus according to the invention in the simple operating mode,

Fig. 4

a schematic front view of the cam box of Fig. 3 in the collective mode of operation, and

Fig. 5

a schematic rear view of the cam box of FIG. 4th

3 shows a schematic front view of a cam box 200 according to the invention in simple production mode. The cam box 200 may be equipped with a puncture cylinder a 3 to 2 folding device with a rotating folding blade cooperate to the To control movement of the puncturing needle, as with respect to the embodiment of the Prior art is described in Fig. 1 and Fig. 2. The cam box 200 has a raised first portion 210 and a second movable cam segment 201, which in axial direction between a simple production mode position and a Collective production mode position can be moved. The cam segment 201 may be moved within a cam bracket 202 having an upper portion and a lower portion 222 has. The cam segment 201 includes an elevated one Section 211 and a corresponding cut-out section 212, which is shown in FIG Generally shaped in the manner of section 210. An un-elevated section with The bent parts 213, 214 are respectively adjacent to the raised portion 211 and the Section 212 arranged. The curved portion 230, the curved portion 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 another of the signature holding devices of the folder with a rotating Folding blades.

The segment 201 may be between a simple production mode as in FIG. 3 shown where the raised portion 211 and the portion 212 in the path of Cam follower, and a collective production mode as shown in Fig. 4 move where the raised portion 211 and the portion 212 over the path of Cam followers have been pushed out to engage with the cam followers the puncturing needles or other device holding the signature.

To the operating mode from simple production to collective production A pair of first air cylinders 204 activates a pair of levers 205 which then engage A pair of retaining pins 203 is triggered, which is pivotable about a pair of pivot pin 250. The couple Retaining pins 203 in turn releases the cam segment 201. After the cam segment 201 has been released, pushes in a second pair of air cylinders 206 Cam segment housing 207 connected to the cam segment 201. The Cam segment housing 207 is connected to the cam segment 201 by means of a pair Bearings 208 connected (see Fig .. 5, for clarity, the housing 207 not shown), which are mounted on the cam segment 201, and thus pushes the Cam segment in the cam console forward. When the cam segment 201 is the reaches desired position, stops the first pair of air cylinder 204, the lever pair 205th and a pair of springs 209 (see Fig. 5) push the pair of retaining needles 203 into the Cam segment 201, wherein the cam segment 201 in the Collective production mode position is locked.

4 shows a schematic front view of the cam housing 200 in FIG Collect production mode. To the mode of operation of collective production to simple Production, the pair of first cylinders 204 again actuate the pair of levers 205, then remove the pair of needles 203 based on the pivot pin 250 to the To release cam segment 201. After the cam segment has been released, this pulls second pair of air cylinders 206, the cam segment housing 207th Das Cam segment housing 207 pulls on bearing pair 208 (see FIG Cam segment 201 is mounted, and thus moves the cam segment 201 within the Cam console 202 backward. When the cam segment 201 is the desired position reached, the first pair of air cylinder 204 stops to operate the pair of lever 205 and the A pair of springs 209 (see Fig. 5) push the pair of needles 203 into the holes 240 in the Cam segment 201, wherein 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), wherein 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 the simple one Operating mode in collective mode and vice versa.

List of reference numbers

1,2,3

needle

10

folding

11, 12, 13

cam follower

21, 22

elevated section

23

not elevated 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

elevated section

212

cut out section

213, 214

curved section

222

lower section

230

curved section

240

holes

250

Pair of pivot pins

Claims (16)

1. Folding apparatus (10) which can be switched from a collection operation mode to a simple operation mode, having
   a cam (20) with a cam follower path, at least one cam follower in the cam follower path, and at least one retaining mechanism for retaining an edge of a nick, the retaining mechanism being actuated by the or each cam follower (11, 12, 13),
   characterised in that
   the cam comprises a curved section (230) and a segment (201) which is movable relative to the curved section (230), said segment (201) having a section (211) which is elevated relative to the curved section (230) for actuating the or each cam follower (11, 12, 13) and a non-elevated bent section (213, 214) with a radius of curvature similar to that of the curved section (230) of the cam follower path, the movable segment (201) of the cam being movable by an actuating device so that the elevated section (211) and the non-elevated section (213, 214) of the movable segment (201) can be moved selectively into the cam follower path that runs partly along the curved section (230).
2. Folding apparatus (10) according to claim 1, characterised in that the cam (20) is a cam box (200).
3. Folding apparatus (10) according to claim 1 or 2, characterised in that the cam comprises the elevated section (211) and a corresponding recessed section (212).
4. Folding apparatus (10) according to one of the preceding claims, characterised in that the cam comprises a second elevated section (210) which is stationary in relation to the cam follower path.
5. Folding apparatus (10) according to one of the preceding claims, characterised in that the movable segment (201) is axially movable along a cam support (202) of the cam (20).
6. Folding apparatus (10) according to claim 7, characterised in that the folding apparatus (10) further comprises a pair of bearings (208) which fit slots in the cam support (202) to permit movement of the movable segment (201) relative to the cam support (202).
7. Folding apparatus (10) according to one of the preceding claims, characterised in that the folding apparatus (10) further comprises at least one air cylinder (204) for moving the movable segment (201).
8. Folding apparatus (10) according to one of the preceding claims, characterised in that the folding apparatus (10) further comprises at least one retaining pin (203) for locking the movable segment (201) in one of the two positions.
9. Folding apparatus (10) according to claim 8, characterised in that the movable segment (201) comprises at least two holes (240) for cooperating with one of the retaining pins (203).
10. Folding apparatus (10) according to claim 8 or 9, characterised in that the folding apparatus (10) further comprises an air cylinder (204) for actuating the or each retaining pin (203).
11. Folding apparatus (10) according to one of the preceding claims, characterised in that the folding apparatus (10) is a 3-to-2 folding apparatus with a rotary folding blade.
12. Printing press having a folding apparatus (10), characterised by a folding apparatus (10) according to one of the preceding claims.
13. Method of switching a folding apparatus (10) from the simple operation mode to the collecting operation mode, the folding apparatus (10) comprising a cam (20) with a cam follower path, at least one cam follower (11, 12, 13) in the cam follower path and at least one retaining mechanism (203) for retaining an edge of a nick, the retaining mechanism (203) being actuated by the or each cam follower (11, 12, 13),
    characterised by

    moving a movable segment (201) of the cam so that a section (211), elevated relative to a curved section (230), of the segment (201) which is movable relative to the curved section (230) is located in the cam follower path of the cam in order to actuate the minimum of one cam follower (11, 12, 13), so as to allow the folding apparatus (10) to operate in simple mode and

    moving the movable segment (201) of the cam, so that a non-elevated bent section (213, 214) of the movable segment (201) with a radius of curvature similar to that of the curved section (230) of the cam follower path is located in the cam follower path of the cam, so as to allow the folding apparatus (10) to operate in collecting mode.
14. Method according to claim 13, characterised in that the steps of the movement are carried out using air cylinders (204, 206).
15. Method according to claim 13 or 14, characterised in that the step of locking the movable segment (201) in the collecting operation mode or simple operation mode comprises using a retaining pin (203).
16. Method according to claim 13, 14 or 15, characterised in that the steps of the movement are carried out by an axial sliding movement of the movable segment (201).

Images