EP3063015B1 - Device for stapling printed products and stapling head - Google Patents

Description

The invention relates to a device for, preferably automatic, stapling of printed products, with a stapling head for driving a staple through a printing product back and with a bender for bending the open ends of the staple.

Furthermore, the invention relates to a stapling head for a device for stapling printed products.

Devices of the type in question for stapling printed products, such as brochures, magazines, brochures, catalogs and the like, have been known from practice for years. Only by way of example on the EP 1 629 992 A1 which discloses a method of stapling printed products and a corresponding stapler. According to local disclosure individual sheets are collected on the gathering chain of a saddle stitcher to print products and saddle-shaped promoted to a stapler.

The known device has a stapling head and a bender. The stapling head is arranged above the collecting chain and the Umbieger below this. There is a gap between the two so that the printed products to be printed can be conveyed between them and stapled. The staple used for stapling is formed in the stapling head of the stapler, which has a driver and a bender in a conventional manner. Specifically, the stapling head in a conventional manner, a wire is fed, which is withdrawn from a roll. From this wire, a corresponding piece is cut off and this is bent with the bender in a substantially U-shaped, wherein the staple back is rectilinear. With the driver, this U-shaped piece is driven as a staple in the printed product to be stapled. The driven by the printed product staple is closed with the Umbieger. The Umbieger works here with the stapling head and has flaps with which the clip is closed.

A problem with the known device is that the stapling head encompassed by the device is only suitable for stapling printed products with conventional staples. Conventional staples are essentially U-shaped staples having a straight back portion. The known stapling head or the known device is fixed to a single type of stapling, namely stapling with conventional staples.

Furthermore, devices or stapling heads for devices are known from practice, with which a stapling of printed products with eyelet clips is possible. The known devices are designed exclusively for Ringösenheftung due to their specialized structure.

In principle, the stapling of, preferably folded, printed products can take place within an inline system of a digital printing press. The stapling takes place after collecting and collating the printed products within the inline system of the digital printing press. For this purpose, the inline system has a stitching station, in which successive folded sheets are stapled by means of a staple. Serve stapling heads, which are located above the collection point, and counterparts, namely Umbieger, which is located below the collection point. The clincher bends over the free ends of the staple pierced by the fold sheet so that the staple is closed.

In the known devices for stapling printed products is particularly disadvantageous that - depending on the type of stapling head integrated in the device - only a single specified by the stapling head type of stapling is provided, ie either a stapling with ring eyelet stapling or stapling with conventional U shaped staples. Consequently, each has a complete system for stapling with U-shaped staples and a system for the Stitching with ring eyelet staples are kept. This is particularly costly and inefficient.

Furthermore, stapling devices are known from practice, wherein - depending on the application requirements - the complete stapling head can be exchanged in the system. It is a considerable disadvantage that an exchange of the complete stapling head is very complex, complicated and time-consuming.

Furthermore, from the publications BE 417 726 A . BE 527 593 A and DE 10 2008 005 014 A1 Devices for stapling printed products known. BE 417 726 A discloses the preamble of claim 1. The present invention is therefore the object of a device and a stapling head of the type mentioned in such a way and further that with structurally simple means a flexible and efficient use of the device, in particular with a view to providing different types Stapling, with the least possible set-up time is possible.

According to the invention the above object is solved by the features of claim 1.

The above object is further achieved by a stapling head having the features of claim 15.

In accordance with the invention, it has been recognized that it is of considerable advantage if, with regard to a variable and flexible use of a stapling device, in particular for the provision of different stapling, as few components of the device as possible require a conversion or an exchange. According to the stapling head is modular, wherein the stapling head comprises a driving tool and a driving tool holder for modular assembly with the driving tool. The driving tool is modularly replaceable on the driving tool holder fixable and used for driving a, possibly preformed, staple in the printing product back of a printed product. Thus, in the context of retrofitting the device for providing a different type of stapling, ie a stapling, for example to take place with a differently shaped or shaped staple, only to change the driving tool. This is fast and easy to carry out due to the modular design of the stapling head.

Consequently, a device for stapling printed products and a stapling head for a corresponding device are indicated, wherein with structurally simple means a flexible use of the device with little set-up time is possible, in particular with a view to providing different types of staples with different staples.

Advantageously, the supply of a staple wire can be done either via a wire spool / roll or a magazine with pre-punched wire or pieces of wire. It is conceivable that in the driving tool bending means are provided for forming the wire, which preform the staple to be expelled, for example as a conventional staple or as Ringösenheftklammer. Furthermore, it is conceivable that preformed staples, conventional or with eyelet, are already provided in a magazine.

In a particularly advantageous manner, the driving tool may be formed at least partially substantially plate-shaped. Thus, a space-saving design with sufficient stability can be realized. It is conceivable that the driving tool tapers in cross section in the direction of the underside for acting on the staple. Conveniently, an upper part of the drive piece could be formed with a greater thickness or plate thickness than a lower part in the direction of the underside. Thus, a secure and stable attachment can be realized in the driving tool holder, which is substantially connected / coupled to the upper part of the driving tool. The lower part of the driving tool can be made correspondingly narrow by a tapering configuration, so that in the area of the staple loading, the staple supply of, for example, preformed staples, possibly from a storage magazine, can be realized in a structurally simple manner. According to the invention, the driving tool is inserted or installed via a tongue-and-groove system in the stapling head or in the driving tool holder. In this case, for example, the driving tool holder may be designed such that the driving tool is at least partially pushed in for receiving the driving tool holder. Thus, a stable and secure mounting of the driving tool is possible. For this purpose, the driving tool holder can be designed as a substantially parallelepiped-shaped hollow body, so that the driving tool can be inserted or inserted at least partially into the hollow body. To form the tongue and groove connection between the driving tool and the driving tool holder, the driving tool could have a lateral recess, which cooperate with correspondingly formed above guide parts of the driving tool holder, for example in the form of a projection, positively. Furthermore, the projection could - for the formation of the spring - also be formed on the drive train and the recess - to form the groove - be formed on the inner wall of the hollow designed driving tool holder. Conveniently, the driving tool is positively connected to the driving tool holder or at least partially hineinschiebbar in this, so that a simple and secure positioning for coupling the driving tool and the driving tool holder is ensured.

In a further advantageous manner, the driving tool may have at least one opening for attachment to the driving tool holder. This can be coupled with the driving tool holder in a simple manner, the driving tool, wherein a vertically moving during a stapling operation driving tool holder transmits its movement to the driving tool. It is conceivable that is provided as an opening or as a passage or as a recess a non-circular cross-section opening / recess, so that when providing only an opening or recess a rotation of the driving tool is avoided relative to the driving tool holder. Furthermore, expediently two or more openings or recesses - each with a non-circular and / or round cross-section - may be provided so that rotation is prevented and / or improved stability and power transmission to the driving tool is ensured.

In view of a simple and stable fixation of the driving tool in the stapling head, the driving tool can be positioned or held by means of a preferably extending over the horizontal width of the driving tool, carrier and at least one bolt on the driving tool holder. In this case, the carrier may extend only over a part of the width of the driving tool. In a particularly advantageous manner, the at least one bolt may be formed as a projection of the carrier, which engages in a recess of the driving tool for, preferably vertical, fixing. The carrier is fixed immovably in the vertical direction on the driving tool holder. Furthermore, it is conceivable that the carrier comprises one or more openings, which are arranged substantially congruently over corresponding openings of the driving tool and / or the driving tool holder, so that the driving tool is held on the driving tool holder via bolts. The bolt (s) may be firmly connected to the carrier and merely pushed into the respective openings of the driving tool and / or the driving tool holder.

In a further advantageous manner, the carrier can be locked by a locking means on the driving tool holder. In this case, the locking means on the carrier and on the driving tool holder attack directly. Thus, a release of the driving tool from the driving tool holder is effectively avoided as long as the locking means ensures a locked state. Alternatively or additionally, it is conceivable that a locking means engages directly on the driving tool and thus locks the driving tool on the driving tool holder. Furthermore, it is conceivable that a plurality of locking means are provided for securing the driving tool on the driving tool holder.

With regard to a simple and repeated conversion of the stapling head, the locking means may be formed as a releasable connection means. It is conceivable that as a locking means a screw, for example, a thumbscrew, a spring lock, a latch and / or a quick release, etc. is provided. Thus, a quick change mechanism is provided in a sophisticated manner, which allows a quick and easy retooling of the stapling head.

To provide a locking device which is as easy as possible to operate, the locking means can be designed to be motorized. For example, a locking aid can be realized by means of motor and spindle.

Conveniently, the motorized locking means can be operated via the software of the device or its software control. Consequently, a connection of the locking means and thus the realized locking mechanism can be provided to the software / machine software of the device to control the locking via a control panel.

Advantageously, the driving tool in the region of the locking means may comprise a recess and / or a through opening or a passage, wherein the recess and / or the opening is formed such that the locking means is arranged without contact relative to the driving tool. Thus, the recess may for example be formed at the edge of the driving tool, so that the driving tool can be pulled out after a release from the stapling head or from the fixation in the stapling head.

With regard to a diverse and flexible field of application of the device, the drive tool holder can be equipped with different driver modules as a driving tool, wherein the different driver modules can each be provided to act on differently driven or differently preformed staples. In this case, the side of a driver module, which serves for loading and expelling the staple, be determined for a specially shaped and preformed staple. Depending on the application, in particular due to the modular design of the stapling head, the driver module suitable for the currently desired staple form can be inserted into the stapling head in a simple manner, namely by fixing or fastening to the driving tool holder.

In an advantageous embodiment, as a driving tool for equipping the driving tool holder, a driver module for acting on or for driving a, preferably preformed, staple be provided with a straight-shaped back part. Such a staple corresponds to a well-known conventional stapling with staples having a substantially U-shaped configuration. After the two legs of the staple have been driven by the driving tool through the printed product to be stapled, the leg passed are closed by a Umbieger or Umbiegemitteln.

Furthermore, as a driving tool for equipping the driving tool holder, a driver module for acting on or driving a, preferably preformed, staple can be provided with a ring eyelet in the back part of the staple. For this purpose, the driving tool at its serving to act on the staple underside, preferably a Beaufschlagungskante, a recess so that the driving tool is adapted to the stapled Ringösenklammmer in a suitable manner.

In a particularly advantageous manner, depending on the desired staple type, the corresponding driver module can be used modularly as a driving tool in the driving tool holder.

In an advantageous embodiment, a detection device for identifying the driving tool or a driver module can be provided. For example, the driving tool holder may include a detecting device that identifies the inserted and locked driving tool. For this purpose, the driving tool can have suitable coding means, which can detect or decode the detection device of the driving tool holder. In this case, electromagnetic and / or mechanical detection devices for identifying the driving tool are conceivable. The driving tool could, for example, be equipped with an RFID chip that is read by an RFID reader as a detection device for identifying the driving tool. By identifying the respective driving tool used in the tool holder, it is possible that any required basic settings that are to be set for different driving tools are automatically carried out by the device.

Fig. 1

in einer schematischen Ansicht, teilweise, ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung,

Fig. 2

in einer schematischen Ansicht ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung, wobei gegenüber Fig. 1 das Treibwerkzeug ausgetauscht ist,

Fig. 3

in einer schematischen Seitenansicht ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung,

Fig. 4

in einer schematischen Draufsicht ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung;

Fig. 5

in einer perspektivischen Ansicht ein weiteres Ausführungsbeispiel eines Treibwerkzeugs und

Fig. 6

in einer perspektivischen Ansicht ein Ausführungsbeispiel eines erfindungsgemäßen Heftkopfs mit einem Treibwerkzeughalter, in den das Treibwerkzeug aus Fig. 5 eingesetzt ist.

There are now various possibilities for designing and developing the teaching of the present invention in an advantageous manner. For this purpose, on the one hand to the claims subordinate to claim 1 and on the other hand to refer to the following explanation of preferred embodiments of the invention with reference to the drawings. In conjunction with the explanation of the preferred embodiments of the invention with reference to the drawings, generally preferred embodiments and developments of the teaching are explained. In the drawing show

Fig. 1

in a schematic view, partially, an embodiment of a device according to the invention,

Fig. 2

in a schematic view of an embodiment of a device according to the invention, wherein opposite Fig. 1 the driving tool is replaced,

Fig. 3

in a schematic side view of an embodiment of a device according to the invention,

Fig. 4

in a schematic plan view of an embodiment of a device according to the invention;

Fig. 5

in a perspective view of another embodiment of a driving tool and

Fig. 6

in a perspective view of an embodiment of a stapling head according to the invention with a driving tool holder, in which the driving tool Fig. 5 is used.

Fig. 1 shows a schematic view of an embodiment of a device according to the invention. The device for automatically stapling printed products comprises a stapling head for driving a staple a Druckprodukter back and with a bender for bending the open ends of the staple. The stapling head is modular, wherein the stapling head - according to the embodiment of Fig. 1 - Includes a driving tool 1 and a driving tool holder 2, wherein the driving tool holder 2 is equipped with the driving tool 1. The driving tool 1 is interchangeably fixed to the driving tool holder 2. For this purpose, locking bolts 3 are mounted on a cross member 4 as a carrier and are used together with the cross member 4 for attachment of the driving tool 1 on the driving tool holder 2. Furthermore, a groove / feather key connection is provided on the driving tool 1 and the driving tool holder 2, whereby the driving tool 1 in the driving tool holder 2 is inserted or inserted. In this case, the driving tool 1 each side a groove 5, in each of which engages a key formed on the tool holder feather for guiding. For fixing in the vertical direction a spring lock is provided which can be activated or deactivated via the push button 6.

After releasing the spring detent via the push button 6, the driving tool 1 can be pulled out of the driving tool holder 2 via the groove / feather key connection and optionally replaced by another driving tool. The driving tool 1 according to Fig. 1 serves with its loading edge 7 for acting on a preformed, conventional staple with a straight staple spine for collection in a Druckprodukterückücken.

Fig. 2 shows in a schematic view of another embodiment of a device according to the invention, wherein in contrast to the embodiment of Fig. 1 a driving tool 8 is inserted into the driving tool holder 2 for acting on a ring eyelet clip. The driving tool 8 has a recess 9 in the loading edge, which is adapted with respect to a ring eyelet of a ring eyelet clip.

Fig. 3 shows a schematic side view of an embodiment of a device according to the invention. The device shown in part comprises a stapling head with a driving tool holder 2, in which a driving tool 1 is inserted, with a modular coupling via a groove / feather key connection. For this purpose, the driving tool 1 according to the embodiment FIG. 3 a groove 5 on. The driving tool 1 is fixed in the driving tool holder 2 in the horizontal direction. To lock the fixation in the vertical direction a spring lock with a spring 10 is provided, which is actuated by a push button 6. In this case, the traverse 4 can be moved with the locking pin 3 via a guide pin 11. By moving the cross member 4 in the cavity 12, the locking pin 3 can be removed from the recesses of the driving tool 1 and thus the locking of the driving tool 1 are solved in the driving tool holder 2.

Fig. 4 shows a schematic plan view of an embodiment of a device according to the invention, wherein a driving tool 1 is inserted into a driving tool holder 2. The driving tool 1 is fixed via a traverse 4 and locking pin 3 on the tool holder 2 in the vertical direction. The locking takes place via a spring lock comprising a spring 10, wherein the spring lock via a push button 6 can be actuated. By pressing the push button 6, the cross member 4 and thus the locking pin 3 can be moved over the guide pin 11. By moving the cross member 4 in the cavity 12, the locking pin 3 can be removed from the recesses 13 of the driving tool 1 and thus solve the locking of the driving tool 1 in the driving tool holder 2, so that driving tool 1 from the driving tool holder 2 is removable. The driving tool 1 comprises on two opposite sides in each case a groove 5 which cooperate with feather keys of the tool holder 2 for guidance.

Fig. 5 shows in a perspective view of an embodiment of a driving tool 14. The driving tool 14 includes recesses 13 for locking or fixing via corresponding locking bolts of the driving tool receiving the driving tool holder. The driving tool 14 may be formed as a driver module for driving a conventional staple in a Durckprodukterücken or as a driver module for driving a Ringösenheftklammer in a Druckprodukter. The driving tool 14 has - each side - a projection as a feather key 15. The feather keys 15 serve to engage in a corresponding groove in the driving tool holder. through an upper stop, the height adjustment when inserting into the driving tool holder can be regulated.

Fig. 6 shows in a perspective view of an embodiment of a stapling head according to the invention with a driving tool holder 2, in which the driving tool 14 - Fig. 5 - is installed. The driving tool holder 2 according to the embodiment Fig. 6 has a groove for guiding the feather key 15 of the driving tool 14. The drive tool holder of the stapling head takes over a mechanical or electrical drive, a force from above into the driving tool 14 for expelling the staple or for driving the staple in the Druckprodukterücken before. It is conceivable that the driving tool 14 a, possibly from the driving tool 14 extendable driver with Beschaufschlagungskante 7 or with respect to a ring eyelet adapted Beaufschlagungskante with recess having.

The supply of a staple wire can be done either via a wire spool or a magazine with pre-cut wire. It is conceivable that in the driving tool bending means are provided for forming the wire, which preform the staple to be expelled, for example as a conventional staple or as Ringösenheftklammer. Furthermore, it is conceivable that preformed staples, conventional or with eyelet, are already provided in a magazine.

According to Fig. 6 the driving tool 14 is locked in the vertical direction by means of bolts which protrude into the recesses 13. Furthermore, the driving tool 14 can also be fastened in the driving tool holder 2 via electrical or other mechanical components. The driving tool 14 has a loading edge or a loading edge with a recess, depending on the type of staple to be driven. Furthermore, detents via the feather key 15 on the driving tool holder 2 are possible.
With regard to further advantageous embodiments of the device according to the invention, reference is made to avoid repetition to the general part of the specification and to the appended claims.

Finally, it should be expressly understood that the above-described embodiments of the device according to the invention are only for the purpose of discussion of the claimed teaching, but not limit these to the embodiments.

LIST OF REFERENCE NUMBERS

1

driving tool

2

Driving tool holder

3

locking bolt

4

traverse

5

groove

6

push-button

7

Beaufschlagungskante

8th

driving tool

9

recess

10

feather

11

guide pins

12

cavity

13

recess

14

driving tool

15

Adjusting spring

Claims (15)

1. Device for stapling printed products, preferably automatically, comprising a stapling head for driving a staple through the back of a printed product, and a bending means for bending the open ends of the staple,
   the stapling head being modular, the stapling head comprising a driving tool (1, 8, 14) and a driving tool holder (2) to be equipped with the driving tool (1, 8, 14), the driving tool (1, 8, 14) being able to be fixed to the driving tool holder (2) so as to be replaceable,
   characterised in that the driving tool (1, 8, 14) can be inserted or installed in the stapling head or in the driving tool holder (2) of the stapling head by means of a tongue and groove system.
2. Device according to claim 1, characterised in that the driving tool (1, 8, 14) is substantially planar.
3. Device according to either claim 1 or claim 2, characterised in that the driving tool (1, 8, 14) can be inserted/installed in the stapling head or in the driving tool holder (2) of the stapling head in the vertical direction by means of a tongue and groove system.
4. Device according to any one of claims 1 to 3, characterised in that the driving tool (1, 8, 14) comprises at least one opening or recess (13) for fastening said driving tool to the driving tool holder (2).
5. Device according to any one of claims 1 to 4, characterised in that the driving tool (1, 8, 14) is held on the driving tool holder (2) by a support, preferably extending over the width of the driving tool (1, 8, 14), and at least one bolt.
6. Device according to any one of claims 1 to 5, characterised in that the support and/or the driving tool (1, 8, 14) may be locked in position on the driving tool holder (2), preferably directly, by a locking means.
7. Device according to claim 6, characterised in that the locking means is designed as a detachable connecting means, in particular as a screw connection, wing screw, spring detent, locking catch, quick release mechanism, etc.
8. Device according to either claim 6 or claim 7, characterised in that the locking means is motorised.
9. Device according to any one of claims 6 to 8, characterised in that the locking means can be controlled by software.
10. Device according to any one of claims 6 to 9, characterised in that the driving tool (1, 8, 14) comprises a recess or opening in the region of the locking means, the opening or recess being designed such that the locking means does not come into contact with the driving tool (1, 8, 14).
11. Device according to any one of claims 1 to 10, comprising a plurality of different driving tools, each of which can be considered a driver module, and wherein the driving tool holder (2) can be equipped with different driver modules as a driving tool (1, 8, 14), wherein the different driver modules are each intended for acting on or driving differently formed staples.
12. Device according to any one of claims 1 to 11, characterised in that a driver module for acting on or driving a, preferably preformed, staple comprising a rectilinear rear part is provided as the driving tool (1, 8, 14), and/or
    in that a driver module for acting on or driving a, preferably preformed, staple comprising a ring eyelet is provided as the driving tool (1, 8, 14).
13. Device according to any one of claims 1 to 12, characterised in that, according to the desired type of staple, the corresponding driver module can be inserted in a modular manner into the driving tool holder (2) as a driving tool (1, 8, 14).
14. Device according to any one of claims 1 to 13, characterised in that a detection device is provided for identifying the driving tool (1, 8, 14).
15. Stapling head, in particular for a device for stapling printed products according to any one of claims 1 to 14, comprising a driving tool (1, 8, 14) and a driving tool holder (2) to be equipped with the driving tool (1, 8, 14), the driving tool (1, 8, 14) being fixed to the driving tool holder (2) in a modular manner and so as to be replaceable,
    characterised in that the driving tool (1, 8, 14) can be inserted or installed in the driving tool holder (2) by means of a tongue and groove system.

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