JPH04341453A - Folder for web printing machine - Google Patents

Abstract

PURPOSE: To prevent printed products from being pressed between partition plates during discharge, by crossing outer peripheries of fan blades in two fan devices having delivery part of the printed products on a common plane, and providing a device for preventing collision of the top of the blades. CONSTITUTION: A cut cylinder 20 cuts printed products from a web, and a gear transport tape 13 introduces them to respective blades 15, 16 of fan arrangements 17, 18. A guide edge 9 of the printed products moves into a receiving pocket 11 formed by two blades 1, 3, and displaces the top 6 of a fan blade 2 in the direction of a fan blade 1. The top 6 of the fan blade 2 intrudes into a dent 5 formed in the fan blade 1 following the receiving pocket. Then, the next printed product is transported near the top 6, and perfectly moved into a receiving pocket 12 provided for the purpose. The printed product is arranged from the receiving pocket 11, 12 on conveyor belts 26, 27.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding device for web printing presses. More specifically, it relates to a folding device located downstream of a printing press in the transport direction of the printed products.

[0002] A web is fed through a web rotary printing press; after the web has been printed, it is fed into a folding device where processing (folding, cutting and sorting) of the printed product takes place.

The focus of the invention is the delivery of printed products, in which the stream of printed products is guided through a folding device and can be divided into a number of streams of printed products for the purpose of ejecting the printed products. Regarding equipment.

[0004] The delivery of the printed product is rotated in one or more opposite directions, such as a fan device or a fan device that picks up the printed product and places it on a conveyor for further processing. achieved by the device.

[0005]

BACKGROUND OF THE INVENTION U.S. Pat. No. 3,894,479 discloses a method for forming newspaper stacks. Two fan devices are provided, which are supplied alternately with printed products. The distribution of the individual printed products to one of the fan devices is achieved via a diverter which is arranged upstream of the fan device in the flow direction of the printed products.

A number of embodiments of delivery mechanisms for printed products are illustrated and described in US Pat. No. 3,762,697. A fan device for a printed product delivery device is also disclosed therein, which performs a division of the flow of printed products by means of a folding device.

These previously known fan arrangements are of a construction type in which several identical fans are arranged at mutually remote distances along a common axis.

In the last-mentioned patent, two fan devices are provided for one print stream,
The fan devices each alternately supply printed products thereto. In contrast to U.S. Pat. No. 3,894,479, U.S. Pat. do not have. In the latter patent, the distance between the axes of mutually facing fan devices is smaller than the diameter of each of the identical fan devices. The partition plate of the first fan device is arranged so as to be able to branch laterally by the partition plate of the second fan device, so that collision of partition plates arranged facing each other can be prevented. ing. The feeding of the printed product takes place centrally between the parallel axes of the fan arrangement.

Depending on the respective arrangement of the fan devices, the first or second fan device can take over and deliver the incoming printed products.

A disadvantage of the latter structure is that the printed product falls unguided, almost in free fall, into the interior of the respective partition of the fan arrangement. If the printed matter falls without guidance in this way, for example, the printed matter may pass between the partition plates of the fan device that are arranged axially divergent from each other, or it may be pushed between the partition plates. This means that both of these results in damage to the printed product.

[0011]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to eliminate the aforementioned disadvantages of hitherto known devices of this general type, so that the guidance of the web therethrough is optimized. The purpose is to do so.

0012

SUMMARY OF THE INVENTION The present invention provides a folding device for a web printing press with a delivery section for printed products, which consists of two devices, each in opposite directions. each receiving means is rotatable and has a respective receiving means formed with a pocket for receiving the printed product therein, the respective receiving means of each device being rotated the receiving means of both devices are on a collision course with each other so that they can collide at a predetermined position of the endless path, and the collision prevention means are respectively movable along the respective endless paths. The above problems and other problems are solved by being included in the device and being configured to prevent collision at a position between the receiving means of one device and the receiving means of the other device. I was able to do that.

[0013]

According to another aspect of the invention, there is provided a folding device for a web printing press with a delivery section for printed products, the folding device comprising two fan devices, the fan device comprising: , each forming a rotatable body with a generally cylindrical profile and a respective rotating shaft, the rotating shafts being arranged laterally apart from each other, and each fan device having a respective rotating shaft. consisting of a number of impellers with tips located on the outer circumferential surface of the fan device, each pair of mutually adjacent impellers for receiving the printed product between them and inwardly. defining pockets in which the axes of rotation are located apart from each other by a distance less than the sum of the radii of the generally cylindrical rotatable bodies, such that their circumferential surfaces intersect with each other. The fan device has means for protecting the tips of each impeller of the fan from collisions.

According to another aspect of the invention, each of the two fan devices is comprised of a number of adjacent fans spaced apart from each other on a common axis; The respective common axes of each of the devices are arranged parallel to the other common axis, and each fan of one fan device, together with a respective one of the fans of the other fan device, is arranged parallel to the other common axis. arranged in and adjacent to a common plane, each fan comprising an impeller with a tip located on the circumferential surface of the respective fan; The planes intersect with each other within a common plane, and means is provided on the fans for preventing collision of the tips of the respective impellers of the fans disposed within the common plane. There is.

[0015] A system of mutually facing fans offers a number of advantages with respect to paper conveyance and handling of the individual products processed within the folding device, respectively. The fan arrangement thus makes it possible to reliably guide folded products, for example four-page signatures. However, if it is thin, light, compact, or has an open leading edge, it has the problem of flapping during transport (especially at very high speeds).

The folded products picked up by the impeller of one of the fan devices are thus lifted out of the product stream by successive impeller tips of the opposite fan device and are additionally first is moved in the direction of the fan device described in . If required or desired, a minimum spacing is thereby advantageously formed between the folded products in the product stream. This is because the subsequent printed products are ideally picked up directly by the next fan device. Furthermore, the folded product is additionally stabilized.

According to a further special feature of the invention, the impeller of the fan is provided with radial depressions in its outer region, each depression being arranged together with it in a common plane. The tip of the fan's impeller is received inside.

According to an additional feature of the invention, the impeller is formed with a predetermined radius of curvature, and the anti-collision means is provided with an elastic force for each depression formed in the impeller. a resilient cover having a radius of curvature approximately equal to a predetermined radius of curvature of the respective impeller and movable into the respective recess. The advantage derived from this feature is that during the stripping process, ie when being stripped by the fan device, the folded product is not disturbed by or trapped in the depressions.

According to a more detailed feature of the invention, the resilient cover is a leaf spring member.

According to a more detailed feature of the invention, the recess has its greatest depth proximate the free end of the respective impeller tip, and there is an undercut. A cut portion is formed, and the leaf spring member is fixed to each impeller tip at the position of the recess furthest from the free end of each impeller tip, and the leaf spring member is fixed to the respective impeller tip at the position of the recess furthest from the free end of the respective impeller tip. , is bendably received within the undercut portion of the recess.

According to a further feature of the invention, the recess has a depth that is a fraction of the wall thickness of the impeller, and the furthest part of the tip of the impeller has a depth that is equal to the depth of the recess. with a reduced wall thickness approximately corresponding to , so that a contact-free passage can be provided through the respective recess at the farthest part of the impeller tip. In other words, the recess is formed only in one part of the wall thickness of the tip of the impeller, and the corresponding tip part with reduced wall thickness and the facing fan can be engaged without any trouble. It has become.

According to still more detailed features of the invention:
Each pair of fan impellers defines a pocket between and inwardly therein for receiving a printed product;
The folding device also includes means for continuously feeding the stream of cut printed products directly to the fan device, the feeding means consisting of a carrier tape of tape rollers and including a lowermost tape roller. and the lowermost tape roller projects downwardly into the fan to achieve positive variable speed positioning of the printed product within the respective pocket.

According to another feature of the invention, the impeller has a slide-resistant material (such as a foam material or the like) on which damping of the incoming printed product is carried out. ing. This feature makes it possible to brake the folded product in an additional advantageous manner, such that the tips of the respective facing fans can come into contact with the printed product.

According to another feature of the invention, the tip of one impeller of the fan device is moved toward and away from the tip of another impeller of the fan device, respectively. It is now possible.

According to an additional feature of the invention, a slide-resistant material is arranged in the pocket for the printed product, in order to achieve damping of the printed product therein in an advantageous manner. is now possible.

[0026] According to yet another feature of the invention, the need to form a recess in the impeller and the need to correspondingly form the tip of the impeller to be received within the recess is obviated; At least a portion of the tip of the impeller is movably disposed on the impeller and means are provided for activating the movable portion of the tip. In other words, at the peeling position where the signature is peeled off from the device, it is possible to avoid collisions of the respective leading edges. The reason for this is that the tips located in and approaching the overlapping region of the outer circumferential surface of the fan device are movable or pivotable laterally.

According to another aspect of the invention, there is provided in the folding device of the web printing press a delivery section for printed products consisting of two fan arrangements, each of which has a generally cylindrical profile. It forms a rotatable body having a. It also has means for continuously delivering the stream of cut printed products directly to the fan arrangement, the rotatable bodies being arranged along one another and having a substantially cylindrical profile, the rotatable bodies are are also spaced apart by a smaller distance, resulting in the formation of mutually overlapping areas of the outer circumferential surface of the body, each fan device receiving the printed product therein. for the purpose of changing the direction of the printed product, having a number of impellers defined therebetween and each tip extending into an overlapping area of the outer periphery, the tips changing the direction of the printed product; This is delivered directly to the fan device and delivered alternately to the pocket of one fan device and the pocket of the other fan device,
Means are also formed on the fan device to protect the tips of each impeller from collisions.

According to a further feature of the invention, the impeller tips are pivotally connected to the impeller and include means for alternately pivoting the impeller tips; The means are located outside the mutually overlapping regions of their respective outer peripheral surfaces and prevent collisions between the tips of the respective impellers of the respective fan devices.

According to an incidental aspect of the invention, there is provided a folding device for a web printing press, the printing press having a product delivery section consisting of two fan devices, each of which has a rotating each fan device has a distal end located on the outer circumferential surface of the respective fan device. It consists of a number of impellers, each pair of adjacent impellers defining a pocket between them for receiving the printed product therein, and the axis of rotation is generally cylindrical. are located apart from each other by a distance less than the sum of the radii of the rotatable bodies of the contours, so that the outer circumferential surfaces intersect with each other;
The fan device includes means for preventing collision of the tips of each impeller of the fan.

Other features which are considered characteristic of the invention are set forth in the appended claims.

Although the invention is described and illustrated here as being implemented in a folding device for a web printing press, it is in no way to be limited to the details shown. This is because various modifications and structural changes can be made without departing from the spirit of the invention and within the scope and range of equivalence of the claims.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure and method of operation of the present invention, together with additional objects and advantages of the present invention, are described below.
This can best be understood by reading it in conjunction with the following accompanying drawings.

Referring first to the drawings, in particular to FIGS. 1 and 2, there is shown a transport path for printed products.

One or more webs 14 are guided over the former and folded. The folded web 14 is fed from the guide roller 21 to the cutting cylinder 20 through the nip of the upper and lower tension rollers 23 and 22, respectively. The cutting cylinder 20 cuts the printed product from the web. A web separation device 25 is provided between the upper tension roller 23 and the lower tension roller 22.

The cut and folded printed products are then fed by a variable speed conveyor belt or transport tape 13, which is connected to two fan devices or devices 1
7 and 18 may be configured as an accelerator. The variable speed transport tape 13 guides the printed product to the position closest to the impellers 15 and 16 of the fan devices 17 and 18, respectively.

The cooperation of the opposing fans 15 and 16 of fan arrangements 17 and 18, respectively, can be easily seen from FIG. The guiding edge 9 of the printed product is conveyed and suitably accelerated by the variable speed conveying tape until it impinges on the fan impeller 3, which is positioned close to the tip 8 of the fan impeller 3 and just in position to receive the printed product. Hit. and fan 1
5 into a receiving pocket 11 formed by two impellers 1 and 3. The tips 6 of the fan impellers 2 arranged one after the other cause the flow of printed products to be deflected in the direction of the fan impeller 1 from the vertically arriving flow 14 of printed products. This also provides additional stabilization of the printed product.

After the printed product is completely received in the receiving pocket 11, the tip 6 of the fan impeller 2, which had previously been deflected to stabilize the printed product, follows the receiving pocket and the impeller 1 It penetrates into the depression 5 formed therein.

The next printed product is then conveyed by the variable speed tape 13 close to the tip 6 of the fan impeller 2, which previously caused the deflection of the printed product, and into the receiving pocket 12 provided for this purpose. completely moved inside.

The printed products placed in the receiving pockets 11 and 12 are removed from the respective receiving pockets 11 and 12 by means of a non-explanatory conventional stripper in a direction opposite to the direction in which they were inserted into the receiving pockets. It is slid and placed on the conveyor belts 26 and 27.

The collision of the printed product with the walls of the respective recesses 5, 7, 8, which are present approximately laterally, occurs in the receiving pockets 11 and 1.
In order to prevent this collision, a spring member or leaf spring 19 as shown in FIG.
It is provided so as to cover each depression 5, 7, and 10. Although not clearly shown in the drawing, the spring member 19
are suitably connected at one end to the respective impeller 1 to 4 as shown in FIG. 3 and suitably pretensioned. In this state, therefore, the spring element follows the contour of the impeller to which it is attached, without being engaged by points of adjacent impellers. As shown in FIG. 5, the free end of leaf spring member 19 is modified with a suitable bend formed inwardly. The leaf spring element 19 thus becomes received or captured within a suitably undercut portion of the recess located at its end of greater depth. This prevents the free end of the leaf spring member 19 from tangling on the printed product when it enters the receiving pocket.

Instead of the spring member 19, each impeller 1 may be provided with a cutout or notch 5 (FIG. 2).
The notch extends only into the thick part of the impeller 1, as can be seen in FIG. The tip 6 of the impeller 2 located on the opposite side is made one after the other in a similar manner, ie undercut (see FIG. 4). The tip 6 is thus received in the notch 5 of the impeller 1 without colliding with the defined wall of the notch 5. The lowest roller of the tape 13 is the fan 15, 16.
The deep position between the fan pockets 11 allows positive and fast positioning of printed products or signatures to be achieved within the fan pocket 11.

The juxtaposed fans 3 and 4 of the respective fan devices 17 and 18 are clearly illustrated in FIG. juxtaposed fans 15, 16; 29, 30 and 31, 32
are shown clearly disposed in their respective common planes extending perpendicular to the plane of FIG. As shown more clearly in FIG. 2, the tip 28 of the fan impeller 4 engages the notch 10 of the fan impeller 3. If the notch 10 has a cover in the form of an elastic or spring member 19, as shown in FIG.
The fan impeller 4 is at the same time able to push the spring member 19 into the notch 10. In other words, impeller 4 has notch 10
It begins to invade inside.

Fans 15, 1 of fan devices 17 and 18
6, 29, 30, 31 and 32, only 15 and 16 of which are shown in FIG. It is molded from cast plastic material. Of course, they could equally well be formed of other suitable materials, and the pockets and notches could be formed by any suitable machining process. Due to the relatively large diameter of the fan, the receiving pockets 11 and 12 are formed with sufficient depth so that the printed product sliding into the receiving pocket 11 or 12 can travel through a sufficiently long path. on its long path, successively smooth braking can be achieved, for example by using a suitable sliding deceleration material. Shock-absorbing members or crash-buffering members, such as foam materials, can additionally be used at the ends of the receiving pockets;
The guide edge 9 of the printed product is finally and gently braked.

The guiding edge 9 of the printed product arriving at the end of the receiving pocket 11, 12 has a relatively low circumferential speed. This is because the ends of the receiving pockets 11, 12 are located close to the center of the fan. The fixed stripping device, represented by the encircling dashed line above the conveyor belts 26 and 27 in FIG. The device thus collides with the guide edge 9 of the printed product at a slow speed. This ensures that no damage occurs to the guide edge 9, no matter how thin the printing paper is used. The stripping device is arranged at a suitable position along the axis of the fans constituting each fan device, and its position is located in the space between the individual fans of the fan device.

A third embodiment of the fan arrangement is illustrated in FIG. 6, in which each fan arrangement 40, 41 is in effect a cylinder with a pocket formed between the respective impellers. Although not shown in the drawings, a suitable peripheral recess is formed in the surface of the generally cylindrical fan device, which recess accommodates the transport tape and rollers as well as the stripper.

FIG. 7 shows a fourth embodiment of the invention, in which the fan arrangement is in the form of endless belts 51 and 52. Impellers 53, with respective pockets formed therebetween, are supported at selectively spaced apart intervals along the respective endless belts 51 and 52. The alternate delivery of printed products 14 to the respective pockets 54 of the two fan devices 51 and 52, the speed of the respective drive sprockets 53 for the belts, and the spacing of the impellers 53 along the endless belts 51 and 52 are:
Control element for slowing down the transport of the printed product 14. The impeller 53 may be constructed similar to the impellers in previously described embodiments of the invention.

As shown in FIG. 8, FIGS.
Impellers 37, 38 tips 35, 3 of fans 42 and 43, respectively, of fan devices 17' and 18' similar to
6 can be extended, for example, so that incoming printed products or signatures can be diverted into the respective receiving pocket 39, and can be retracted so that possible collisions can be avoided. What should be noted in this regard is that the fan device 17
The outer circumferential surfaces of the fan devices 17' and 18' do not intersect when the tips 35 and 36 of the fan impellers 37 and 38 are retracted.
Gap 5, as seen with and 36 retracted
This means that 0 exists. When the tips 35 of the impellers 37 of the fan 42 are extended, the fan 43
The tips 36 of each of the impellers 38 are retracted. The same is true vice versa. The tip 35 of the fan impeller 37 and the tip 36 of the fan impeller 38 cannot collide. This is because the set of tips of each fan 42 and 43 is never located inside the working circle of the other.

A suitable mechanism for achieving tip lengthening and shortening is diagrammatically illustrated in FIG. The mechanism is pivotally coupled at one end to the pivot point of each of the fan impellers located at one end of the respective fan device. It consists of a linkage rod or push rod 44. The linkage 44 has a cam 4 of suitable contour at one end thereof.
6 and a cam roller 46 which is fixed to a stationary side wall of the machine. Figure 9
As shown in FIG.
The respective tips of all the fan impellers arranged along the axis 8' are connected to each other and can be extended and retracted in unison in accordance with the action of the respective cam followers 44, 45. It is now possible.

Of course, it is also possible to keep the tips 35 and 36 of all the impellers 37 and 38 extended as the fans 42 and 43 rotate. In that case, there is a possibility that the outer peripheral surfaces of the fan devices 17' and 18' formed in this way intersect at the impeller tip portions 35 and 36, respectively. Therefore, only those tips, such as the cam follower 44 and
45 and a cam 46 of suitable profile. The tips of the impellers may be formed with matching depressions, such as depressions 5, 7, 10 in the embodiment of FIG. 2, in which case the blades of fans 42 and 43 of FIG. The wheel tips do not have to be retracted, but must extend only to a position that allows them to cross without colliding.

[Brief explanation of the drawing]

1 is a longitudinal section of a folding device constructed according to the invention, seen from the front; FIG.

FIG. 2 is a partial enlarged view of FIG. 1 showing a delivery device portion of the folding device including two fan devices;

[Fig. 3] A second fan device in which the fan is provided with a spring.
3 is a diagram similar to FIG. 2 of the embodiment; FIG.

FIG. 4 is a schematic diagram of the end of the fan device.

5 is a similar view to FIG. 3, but with a spring in a modified structure, of a second embodiment of the invention; FIG.

FIG. 6 is a perspective view of another embodiment of a fan device, each fan device having a generally cylindrical profile;

7 shows a longitudinal section through a fourth exemplary embodiment of the invention, in which the delivery device includes a device formed as an endless belt; FIG.

8 is a view similar to FIG. 3 of a fifth embodiment of a fan device in which the fan has non-intersecting outer circumferential surfaces and an extendable and retractable impeller tip; FIG.

9 is a view similar to FIG. 4 of a fifth embodiment of a fan device in which the fan has non-intersecting outer circumferential surfaces and an extendable and retractable impeller tip; FIG.

[Explanation of symbols]

5 depression, 6 tip, 7 depression,
8 tip, 9 guide edge, 10 recess,
11, 12 fan pocket, 13 conveyor belt, 14 paper web, 15, 16 fan, 17, 18, 17', 18' fan device, 1
9 spring member, 20 cutting roller, 21
Guide roller, 22, 23 tension roller, 2
4 Former, 25 Separation device, 26,2
7 Conveyor belt, 28 Tip, 29,3
0, 31, 32 fan, 35, 36 tip,
37, 38 impeller, 39 receiving pocket,
42, 43 fan, 44, 45 cam follower, 46 cam, 50 gap

Claims (24)

[Claims] 1. A folding device for a web printing press, comprising a delivery section for printed products with two fan devices, each fan device being spaced apart from each other on a common axis. It is formed from a plurality of adjacent fans, and 2
The common axes of each of the two fan units are arranged parallel to the other common axes, and each fan of one of the fan units is arranged parallel to a respective one of the fans of the other fan unit. arranged with the fans adjacent to and inward of their respective common planes, each fan being formed by an impeller with a tip located at the outer periphery of the respective fan; The outer peripheries intersect with each other within a common plane, and means is provided on the fans to prevent the tips of the respective impellers of the fans disposed within the common plane from colliding. A folding device for a web printing press, characterized in that: 2. The fan impeller is constituted by a recess in its radially outer region, the recess defining the tip of the fan impeller, which is arranged in a respective common plane with the fan. 2. Folding device according to claim 1, characterized in that it is adapted for reception therein. 3. The impeller is formed with a predetermined radius of curvature, and the collision prevention means includes an elastic cover portion for each recess formed in the impeller, The elastic cover portion is characterized in that it has a radius of curvature approximately equal to a predetermined radius of curvature of each impeller, and is capable of bending into each recess.
A folding device according to claim 1. 4. The folding device according to claim 3, wherein the elastic cover portion is a leaf spring member. 5. The recess has its maximum depth proximate to the free end of each impeller tip and defines an undercut therein, and the recess has its maximum depth proximate the free end of each impeller tip and defines an undercut therein, wherein the leaf spring member is a free end secured to each impeller tip at a position of said recess furthest from a free end of said impeller tip and, in turn, bendably received within said undercut portion of said recess; characterized by having a part,
The folding device according to claim 4. 6. The recess is formed only on one side of each impeller of the fan, and the tip of each impeller of another fan is formed correspondingly. 2. Folding device according to claim 1, characterized in that it is adapted to be accommodated in a recess. 7. The recess has a depth that is one part of the wall thickness of the impeller, and the outermost portion of the tip of the impeller is at the depth of the recess. and a substantially correspondingly reduced wall thickness, so as to provide a contact-free passage of the outermost part of the tip of the impeller through the respective recess. The folding device according to claim 6, characterized in that: 8. Each pair of impellers of said fan defines a pocket between them for receiving printed product therein and directs the flow of cut printed product. means for continuously feeding said fan device, said feeding means comprising tape rollers conveying a conveying tape, said lowermost tape projecting downwardly into said fan; rollers to clearly position the printed products within the respective pockets, the lowermost tape roller being laterally passed by the tip portion of reduced wall thickness during rotation of the fan device. 8. Folding device according to claim 7, characterized in that it is located in a position of the passageway adjacent to the folding device. 9. Folding device according to claim 1, characterized in that the impeller has a sliding-resistant material on which it brakes the printed products arriving. 10. A tip of one impeller of the fan device is movable toward and away from a tip of another impeller of the fan device. The folding device according to claim 1. 11. A folding device for a web printing press, in which the printed product delivery part consists of two fan devices, each forming a rotatable body having a substantially cylindrical contour; means for continuously delivering a stream of cut printed products directly to said fan device, the rotatable bodies each having an axis of rotation, said axes of rotation being arranged parallel to each other; are spaced apart from one another by a distance less than the sum of the radii of the bodies of generally cylindrical profile, such that they are formed from mutually overlapping areas of the outer circumferential surface of said bodies; Each fan device has a number of impellers defining therein a pocket for receiving a printed product therein, and the fan device has a plurality of impellers defining a pocket therein for receiving a printed product, and the fan device includes respective tips extending into the wrap region, the fan device being configured to direct the printed product directly onto the fan device into a pocket of one fan device and into a pocket of the other fan device. For a web printing machine, characterized in that printed products are delivered alternately between the inside and outside of the machine, and means for preventing collisions of the tips of the respective impellers are formed on the fan device. folding device. 12. The impeller tips are pivotally coupled to the impeller, and the impeller tips are alternately pivoted from the mutually overlapping regions of the outer peripheral surface. 12. Printed product according to claim 11, characterized in that it has means for dressing, so that collisions between the tips of the respective impellers of the respective fan devices can be prevented. Delivery device. 13. A folding device for a web printing press, comprising:
It has a printed product delivery part consisting of two fan devices each forming a rotatable body with a substantially cylindrical profile and having respective rotation axes arranged parallel to each other. Each of the fan devices is composed of a large number of impellers each having a tip portion, and the tip portion is located on the outer peripheral surface of each fan device, and each of the tip portions is located on the outer circumferential surface of the fan device, and the tip portions are located on the outer circumferential surface of each fan device, and the tip portions are located on the outer peripheral surface of the respective fan devices. The pair defines between them a pocket for receiving a printed product inwardly, and said rotational axes are arranged relative to each other by a distance less than the sum of the radii of the rotatable body of cylindrical profile. located far apart, resulting in
Web printing, characterized in that the outer circumferential surface intersects the fan device, and the fan device has means for preventing collision of the tips of the respective impellers of the fans. Folding device of the machine. 14. A slide-resistant material is arranged in the pocket for receiving a printed product, so that damping of the printed product is realized inside it. Folding device as described. 15. At least a portion of the tip of the impeller is movably disposed on the impeller,
2. The folding device according to claim 1, further comprising means for activating said movable portion of said tip. 16. A folding device for a web printing press with a delivery section for printed products, consisting of two devices each rotatable in opposite directions and with an inner section for receiving the printed products. each receiving means of said device forming a pocket, each receiving means of said device comprising:
each being movable along a respective endless path as said device rotates, said receiving means of both said devices being on a collision course with each other and colliding at a predetermined position of said endless path; 1 of the above devices
characterized in that an anti-collision device for preventing a collision is contained inside each of the devices at said position between one receiving means and the other receiving means of said device, Folding device for web printing presses. 17. Claim 16, characterized in that the device consists of respective fan members, each fan member constituting a rotatable body with a substantially cylindrical profile. Folding device as described. 18. The device according to claim 16, wherein the device comprises a respective fan device, each fan device consisting of a number of fans spaced apart from each other and adjacent to each other. Folding device. 19. Folding device according to claim 16, characterized in that the devices each consist of an endless belt. 20. Folding device according to claim 1, characterized in that the common axes of the two fan devices are arranged substantially parallel to each other. 21. A folding device for a web printing press with a delivery section for printed products, comprising two fan devices each comprising a number of fan impellers with respective tips. The two fan devices are rotatable in opposite directions and have respective receiving means, in which a pocket is formed for receiving the printed product. wherein respective tips of the fan impellers of each of the devices are movable along respective endless paths as the device rotates, and wherein the tips of both of the impellers of the devices are on a collision course with each other. the impeller tip of at least one of the two fan devices collides with the impeller tip of the other of the two fan devices; web printing press, characterized in that the impeller tip of each of the two devices in said position can be prevented from becoming stuck; folding device. 22. The folding device of claim 21, wherein the bendable impeller tip is made of a flexible material. 23. A folding device for a web printing press with a printed product delivery section, consisting of two fan devices, each having a substantially cylindrical profile and each rotating parallel to one another. a rotatable body having a shaft arranged therein, each of the fan devices being comprised of a number of impellers each having a tip located on an outer circumferential surface of each fan device; The pairs of impellers, each adjacent to each other, define between them a pocket for receiving a printed product in their interior, and the axis of rotation is at a radius of the rotatable body of cylindrical profile. the impeller tips of the fan device are alternately extendable by a distance greater than half of the predetermined distance; A folding device for a web printing press, characterized in that it is capable of intercepting incoming printed products and guiding them into the respective pockets. 24. A folding device for a web printing press with a delivery section for printed products, comprising two fan devices, each of the fan devices being spaced apart from each other on a common axis. It is composed of a large number of fans adjacent to each other, and the common axis of each of the two fan devices is
are arranged substantially parallel to each other, and each of said fan devices has a respective fan disposed adjacent to and in a common plane, each of said fans having an impeller. , the impeller having a tip located on the outer peripheral surface of each fan, the tip of the fan impeller of the fan device being movably engaged by an incoming printed product. , and the tips are formed between each impeller and an adjacent impeller of each fan for diverting the printed product into the pocket. Folding device.