EP2291269B1 - Variable window position in punched film cutter - Google Patents

Abstract

A film cutter arrangement for a cutter roller is provided, and punched film cutters for producing cutouts have a cutting edge. The film cutter arrangement and the punched film cutters are attached to a lateral surface of the cutter roller magnetically and/or by vacuum. The punched film cutters can be variably positioned relative to the format film cutters in axial and circumferential directions of the cutter roller by adapter elements.

Description

Technical area

In processing machines, in particular processing machines, which are used for the production of envelopes of all formats with cut-out window, foil knives with fixed window position and foil knife with variable window position are used. Due to the foil knives protruding above the surface of a cylinder, depending on the format, e.g. of an envelope window in various positions cut out.

State of the art

Out US Pat. No. 6,766,733 B1 is a replaceable foil knife known. The foil knife disclosed therein is one with which a variable window position can be produced. The variability of the arrangement of the window position, however, relates only in the axial direction. At the US Pat. No. 6,766,733 B1 Known solution is a window cutout for cutting a window in a fabric, such as a sheet of paper, by means of Einhängestiften (pins) in the axial direction attached to different positions. This means that the window opening can be variably cut in the axial direction with respect to the envelope to be processed.

DE 199 25 612 A1 refers to a rotatable knife roller. This is preferably used for the production of letter envelope blanks. The rotatable knife roller comprises at least one rotatably mounted on a rotatable shaft roller body part, in the peripheral surface magnetic elements are arranged in rows, wherein at least one foil knife is provided which has a thin, flexible base plate made of a magnetically permeable material on the at least one integrally formed sharp cutting edge protrudes. This is formed into a predetermined cutting shape, wherein the base plate has a front and a rear edge and two opposite side edges and the foil knife is held flat by means of the magnetic elements on the peripheral surface.

In the roll body part holding and positioning pins are arranged in series. These protrude at a height h radially out of the peripheral surface, which corresponds approximately to a thickness d _{1 of} the base plate, wherein in the base plate in a front edge adjoining the front region a number of cutting edge aligned slots are aligned, the Width b corresponds to a width b _{1 of} the holding and positioning pins. These protrude into the slots, so that the foil knife in the region of a slot length axially displaceable and implementable, seen in the circumferential direction of the second body part, however, is firmly and reproducibly positioned.

In the two solutions outlined above according to US Pat. No. 6,766,733 B1 such as DE 199 25 612 A1 These are solutions in which the respectively disclosed foil knives are arranged fixedly with regard to their window position to be produced. Each time the contour or window position is changed, a complete new format sheet window is required. Even with format foil knives, where an axial adjustment is possible, a new window foil knife is required for radial position change. In addition, it deserves to be noted that usually separate cutting stations are required for the format cut and for the window cut.

Disclosure of the invention

The present invention is based on the solutions of the prior art, the object of the flexibility to cut differently shaped envelopes - to give an example - to allow with foil knives on only one magnetic cylinder, in particular in the positioning of auszuschchnenden window.

According to the invention, the window position in which an envelope window is to be cut out in a specific format within the format section is to be changed in the axial and radial (x, y) direction. For this purpose displaceable window foil knives are mounted, which is done by means of a Pinleisten principle. This means that already existing and used window film knife with corresponding openings for the Einhängepins (see, eg DE 109 25 612 A1 ) can be used.

Depending on the version of the format knife used, the pin bar of the magnet roller is used or pins are used on the format foil knife.

The placement of the window foil knife can be done within a recess of the format foil knife. The recess is e.g. in the area of the format mirror in almost the entire cutting area, if the contour cutting edge can only be positioned on film knives designed as side strips.

The variability of axial window positions results from the consistent application of the Pinleiste principle. The variability of the radial window position is achieved by means of prefabricated adapter plates. The orientation of these adapter plates is carried out either by means of the above-mentioned Pinleistenprinzips or by applying to a lower recess edge of the format film knife.

By means of the adapter plates, a grid can be covered at radial positions. Other radial positions can be achieved by shortening the adapter plates.

The cylinders on processing machines, in which, for example, all formats of envelopes can be produced, are designed as magnetic cylinders, ie have permanent magnetic properties. These magnetic properties of the lateral surface of the cylinder allows the fixation of format foil knives and window foil knives supported by magnetic force. In order reliably to fix the format foil knives as well as the variable axial and radial positions on the lateral surface window foil knife on the lateral surface of the cylinder, these are usually subjected to negative pressure. For this purpose, the entire lateral surface of a cylinder is crossed by a number of holes, of which, for example, in rows and segments extend a number of openings to the lateral surface of the cylinder. If individual segments are subjected to negative pressure, the format foil knives or window foil knives are held in their predetermined position on the circumference of the cylinder so that centrifugal forces occurring at high rotational speeds can be absorbed, ie both the format foil knives and the window foil knives reliably on the circumference of the cylinder being held. The format foil knives and the window foil knives are held on the circumference of the knife roll primarily due to the magnetic force; the negative pressure of the knife roller acts in relation to the fixation of the format film knife and the or used window foil knife rather supportive. By pressurizing the knife roller envelopes are kept during transport, for example, are held by pressurized with vacuum suction openings which are formed when cutting the envelopes Papierschnippel and fixed by the acted upon with negative pressure openings and later discharged from the transport path.

Following the solution proposed according to the invention, the window foil knives can be attached to already existing pin strips of the format foil knives used. It may be both an immediate hooking of a window foil knife to a corresponding pin bar, e.g. be performed on an inner edge of a format sheet knife; In addition, the use of different width and circumferentially longer trained adapter or embossing plates is possible, so that within a cut-out area of a format foil knife, the window foil blade is fixed in any axial or circumferential direction. In addition to formed in different configurations adapter plates, the window foil can also be fixed by adapter strips on the circumference of the cylinder. The adapter strips can be attached both magnetically and under pressure on the lateral surface of the cylinder. The negative pressure is particularly recommended at higher rotational speeds, i. high production speeds due to the high centrifugal forces occurring during operation.

In addition to the direct orientation of the window foil knife used in each case, the adapter plates used can either also be aligned by means of Pinleistenprinzips or fixed by applying it to one of the cut edges of the format film knife in position. Due to the different configuration of adapter plates, e.g. can be formed as cuboidal or strip-shaped embossing or adapter plates, all current window positions can be achieved on all popular formats of envelopes to be produced window positions within a recess of a format foil knife.

Preferably, a set of adapter strips or adapter plates is used, so that the window foil blades can be easily and quickly converted to the new axial or radial position of the window position when converting a format to be processed.

Brief description of the drawings

With reference to the drawing, the invention will be described below in more detail.

Figur 1

einen Schnitt durch eine Messerwalze mit Unterdruckversorgungsbohrungen und Unterdrucköffnungen in der Mantelfläche der Messerwalze,

Figur 2

einen Teilschnitt eines Walzenkörperteiles einer Messerwalze mit aufgebrachtem Folienmesser,

Figur 3

einen Satz Adapterbleche in unterschiedlichen Konfigurationen zur Festlegung unterschiedlicher Axial- bzw. Radialpositionen eines Fensterfolienmessers,

Figur 4

ein Fensterfolienmesser befestigt mittels eines Adapterbleches in einer Aussparung eines Formatfolienmessers mit Pin-Nocken,

Figur 5

ein zweiteiliges Formatfolienmesser mit an der Pinleiste eines Magnetzylinders eingehängtem Adapterblech samt Folienmesser,

Figur 6

ein geteilt ausgebildetes Formatfolienmesser mit in Umfangsrichtung verlängertem Adapterblech, an dem ein Fensterfolienmesser aufgenommen ist,

Figur 7

ein Formatfolienmesser mit Pin-Nocken und mit Aussparung, in die ein Folienmesser mittels eines Adapterbleches befestigt ist,

Figur 8

ein Formatfolienmesser mit Aussparung mit in die Aussparung eingelassenem Fensterfolienmesser, welches über ein streifenförmiges Adapterblech gestützt an der nachlaufenden Aussparungskante in Position gehalten ist,

Figur 9

ein Formatfolienmesser mit zwei in dessen Aussparung vorgesehenen Fensterfolienmessern, von denen eines in die Pinleiste des Magnetzylinders und das andere über ein streifenförmiges Adapterblech ähnlich wie in Figur 8 positioniert ist,

Figur 10

ein Formatfolienmesser mit in einer Aussparung eingelassenen Fensterfolienmessern in unterschiedlichen Positionen und,

Figur 11

ein Formatfolienmesser mit drei in einer Aussparung angeordneten Fensterfolienmessern, von denen eines unmittelbar in die Pinleiste eingehangen ist, ein weiteres mittels eines Adapterbleches in der Aussparung fixiert ist, und ein drittes Fensterfolienmesser über ein streifenförmiges Adapterblech an einer Aussparung abgestützt ist.

It shows:

FIG. 1

a section through a knife roller with vacuum supply holes and vacuum openings in the lateral surface of the knife roller,

FIG. 2

a partial section of a roll body part of a knife roller with attached foil knife,

FIG. 3

a set of adapter plates in different configurations for defining different axial or radial positions of a window foil blade,

FIG. 4

a window foil knife fastened by means of an adapter plate in a recess of a format foil knife with pin cams,

FIG. 5

a two-part format foil knife with adapter plate hung on the pin bar of a magnetic cylinder, including foil cutter,

FIG. 6

a divided trained format foil knife with circumferentially extended adapter plate, on which a window foil knife is received,

FIG. 7

a format foil knife with pin cam and with recess, in which a foil knife is fixed by means of an adapter plate,

FIG. 8

a format foil knife with a recess with a window foil knife inserted in the recess, which is held in position on the trailing edge of the recess via a strip-shaped adapter plate,

FIG. 9

a format foil knife with two provided in the recess window foil blades, one of which in the pin bar of the magnetic cylinder and the other via a strip-shaped adapter plate similar to in FIG. 8 is positioned

FIG. 10

a format foil knife with recessed window foil blades in different positions and,

FIG. 11

a format foil knife with three arranged in a recess window foil knives, one of which is mounted directly in the pin strip, another is fixed by means of an adapter plate in the recess, and a third window foil knife is supported via a strip-shaped adapter plate at a recess.

variants

FIG. 1 shows in sectional view essential parts of a knife roller and their storage.

FIG. 1 is to remove a knife roller 10, the bearing 14 and its essential parts in a sectional view, but without a foil knife and without serving for the attachment and alignment of a foil knife parts.

The knife roller 10 comprises a support shaft 12, which is supported by means of bearings 14 in machine frames 16 and driven by a gear 18 or directly via a servo motor. Between the machine frames 16, a cylindrically shaped roll body part 20 is rotatably mounted on the support shaft 12, on whose lateral surface 22 in rows 74 juxtaposed suction openings 24 are arranged. In the roller body part 20, suction channels 26 are arranged parallel to the axis at a distance from an axis of rotation of the knife roller 10 and are in air-conducting communication with the suction openings 24. On the front side on the roll body part 20, a suction air control valve 28 is arranged, which is mounted by means of a spacer and centering sleeve 30 rotatably mounted on the frame wall 16. The Saugluftsteuerventil 28 has two separate, concentric with each other arranged Saugluftkanäle 32, which fresh air ducts 34 are arranged downstream. The Saugluftkanäle 32 are connected via a Saugluftzuführung 36 with a not shown suction air source. From the suction air ducts 32, the suction air ducts can be acted upon with suction air via a suction and transport angle region. For Saugluftsteuerventil 28 toward a 3/3-way valve 38 is assigned in the roll body part 20 in each of the suction channels 26. With the 3/3-way valve 38, a suction channel 26 is shut off or via a through bore 40 with the Saugluftsteuerkanälen 32 connectable. The suction air ducts 32 each have a fresh air duct 34 downstream, from where a reduction of the negative pressure in the suction channels 26 and the suction openings 24 which are formed in the lateral surface 22 of the knife roller 10, takes place.

FIG. 2 shows the arrangement and attachment of a foil knife on the roll body part of a rotating in the rotating knife roll.

A format foil knife 54 is magnetically held on the lateral surface 22 of the rotating in the direction 52 rotating cutter roller 10. The format film knife 54 includes a thin base plate 56. The base plate 56 of the format film knife 54 is preferably made of a magnetically permeable material in a small thickness. The base plate 56 of the format foil knife 54 includes a leading edge 60 and a trailing edge 62. On the base plate 56 of the format foil knife 54 is disposed at least one integral sharp cutting edge 58 which defines a particular cutting shape, e.g. for making an envelope, for example.

In the format film knife 54 openings 64 are arranged, which are in air-conducting connection with the suction openings 24. The sectional view according to FIG. 2 shows areas covered by the base plate 56 of the format foil knife 54 in the lateral surface 22 and not provided with openings 64.

Viewed in the direction of rotation 52 of the knife roller 10, in a front area 60 adjoining the front area 70, slot-shaped openings 68 are made in the base plate 56. The slot-shaped openings 68 extend (see the illustration according to FIGS Figures 3-11 ) substantially in rows next to each other at a leading edge, for example of window film blades 78, as will be described in more detail below.

On the lateral surface 22 of the knife roller 10 at least one row of positioning pins (pins) 66 is arranged, which protrude radially with a height from the lateral surface 22 of the roller body part 20. This height corresponds approximately to the thickness of the base plate 56 of the format film knife 54 to be fixed. The holding and positioning pins 66 are likewise arranged in a row in circumferential segments on the lateral surface 22 of the knife roller 10.

On the lateral surface 22 of the roller body part 20 are shown in the sectional view in FIG. 2 In addition, magnetic elements 50 are arranged in rows, wherein each one row alternates with a row 74 of Saugluftöffnungen 24.

For positionally accurate positioning and fixing a format sheet knife 54 on the lateral surface 22 of the roll body part 20, this is at the holding and positioning pin 66 - FIG. 2 shown - hooked so that the holding and positioning pins 66 protrude into the slot-shaped openings 68 at the front edge 60 of the format foil knife 54. During the hanging process, the format foil knife 54 in the region of a slot length of the slot-shaped openings 68 in the x-direction, ie in the axial direction, to a limited extent displaceable. Greater axial displacements are achievable by translating the format foil blade 54 in the row 74 of the retaining and locating pins 66. After the hanging process, the format foil knife 54 is positively fixed in the circumferential direction by means of the holding and positioning pins 66 reaching into the slot-shaped openings 68 and fixed non-positively on the lateral surface 22 of the roll body part 20 of the knife roller 10 by means of the magnetic elements 50. Thus, even with difficult cutting conditions, a displacement of the format film blade 54 on the lateral surface 22 of the knife roller 10 is not possible.

The representation according to FIG. 3 is a set of adapter elements to take.

As shown in the illustration FIG. 3 can be seen, comprises a set of adapter elements as shown in FIG FIG. 3 For example, a square shaped adapter element 74, at its front edge adjacent slot-shaped openings 68 are provided for hanging in suspension pins 66 (pin cam). At the trailing end, ie the trailing edge of the adapter elements 74 as shown in FIG FIG. 3 , Are also arranged in rows juxtaposed holding and positioning pins 66. Furthermore, the set comprises adapter elements 74, 76 as shown in FIG FIG. 3 strip-shaped adapter elements 76. These are designed in a length L and can be designed in different widths B ₁ and B ₂ .

The in FIG. 3 Exemplary illustrated adapter elements 74 and 76 have in common that they are made of a magnetically permeable material and of course in other than in the in FIG. 3 shown geometries, ie other than rechteckförnig, square or strip-shaped may be formed.

With reference to the below described in more detail FIGS. 4 to 11 will the functioning of the in FIG. 3 exemplified set of adapter elements described in more detail. In these Figures 4-11 is the knife roller 10 according to the FIGS. 1 and 2 merely indicated.

FIG. 4 shows, for example, an integrally formed format foil knife 54 with a recess.

As shown in the illustration FIG. 4 can be seen, the recess 84 is bounded by a boundary 86. The format foil meter 54 according to the top view in FIG FIG. 4 is designed according to the curvature of the lateral surface 22 of the knife roller 10 and includes in addition to the leading front edge 60, the trailing edge 62. The format foil knife 54 according to the plan view in FIG. 4 is integrally formed. In the region of the front edge 60, the already mentioned slot-shaped openings 68, with which the format foil knife is attached to holding and positioning pins 66 which are formed on the lateral surface 22 of the knife roller 10, extend in a row shape.

As FIG. 4 shows are located at the boundary 86, which is parallel to the front edge 60 of the format film blade 54, the holding and positioning pins 66. In this, as in FIG. 4 At the leading edge of the rectangular shaped adapter element 74, this has the slot-shaped openings 68, while at the trailing end of the adapter element 74 as shown in FIG FIG. 4 , are formed in series adjacent holding and positioning pins 66. In this formed on the trailing edge of the adapter element 74 holding and positioning pin 66, the slot-shaped openings 68 are mounted on the front edge of the window film blade 78. Both the rectangular shaped adapter element 74 and the window foil blade 78 are characterized by the in FIG. 2 shown magnets 50 which are arranged in a row on the lateral surface 22 next to each other, and the alternately applied to the rows of magnetic elements 50, row-like juxtaposed suction openings 24 actively supported by negative pressure and so fixed to the lateral surface 22 of the knife roller 10. This ensures that both the adapter elements 74, the adapter element 74 as shown in FIG FIG. 4 , as well as the window film knife 78 positioned by this even at higher rotational speeds reliably and safely held on the lateral surface 22 of the knife roller 10 and remain fixed.

FIG. 4 further shows that the window foil knife 78 may include a peripheral cutting edge 58 that defines a window cutout 82. Along the boundary 86 of the recess 84 suction openings 80 are formed. Both the cutting edge 58 of the window film knife 78 and the cutting edge 58 of the format film knife 54 defines a format cut knife contour on the one hand of the envelope to be transported, on the other hand cut out the window cutout 82. Thus, the format film window within the cutting edge 58, the suction openings that fix the Fensterschnippel by reference numerals 80.2 indicated. With respect to the cutting edge 58, suction ports 80 are out of the format cutter blade contour defined by the cutting edge 58 of the size film blade 54. The suction openings 80 outside the cutting edge 58 serve to transport lateral Schnippelstreifen, while lying within the cutting edge 58 of the size film blade 54 suction openings 80.1 are used to transport the envelopes on the knife roller 10.

The representation according to FIG. 5 is a multi-part trained format foil knife, which includes a first blade portion 88 and a second blade portion 90. The facing edges 86 of the first knife part 88 and the second knife part 90 define the recess 84. The cutting edges 58, which are arranged on the knife parts 88, 90 and are integrally connected to the base plate of the respective knife parts 88, 90, define a cutting contour, so that an envelope, For example, an envelope can be cut out of a sheet-like material, such as a paper or a cardboard sheet.

Each of the two blade parts 88 and 90 comprises the front edge 60 with row-shaped recesses 68, furthermore the rear edge 62 without slot-shaped recesses.

As shown in the illustration FIG. 5 As can be seen, the adapter element 74 with its formed at the front edge, arranged in rows slot-shaped openings 68 in holding and positioning pins 66, which are formed in this case on the lateral surface 22 of the knife roller 10, mounted.

At the trailing edge of rechteckfömig trained adapter element 74, which is preferably made of a magnetically permeable material, there are arranged in rows holding and positioning pins 66. In turn, the slot-shaped openings 68 are at the leading edge of the Window film knife 78 mounted. This comprises a circumferentially formed cutting edge 58 which defines a recess indicated by reference numeral 82, which is introduced via the window film knife 58, for example in an envelope, ie a window envelope.

Alternatively to the representation according to FIG. 5 If the adapter element 74 shown there has a relatively short extension in the Y direction, it can also be made longer, cf. in particular embodiment according to FIG. 6 ,

The representation according to FIG. 6 is also a two-piece trained foil knife 54 refer. Analogous to the representation according to FIG. 5 Both blade parts 88 and 90 comprise front edge 60 and trailing edges 62. Slot-shaped openings 68 extend in the region of leading edges 60 in both blade parts 88 and 90, respectively.

As shown in the illustration FIG. 6 can be removed, is in the circumferential direction, that is received in Y-length extending adapter element 74. This has at its leading edge a number of adjacent slot-shaped openings 68 formed. These are suspended for example in holding and positioning pins 66 on the lateral surface 22 of the knife roller 10. At the trailing end of the longer extending in the Y direction adapter element 74 is a number of holding and positioning pins 66. In this slot-shaped openings 68 of the front edge of the window film blade 78 are mounted. Depending on the length, ie extension in the Y direction (circumferential direction) of the adapter element 74, the X or Y position of the window film blade 78 with respect to the edges 86 of the recess 84 is determined between the first blade part 88 and the second blade part 90 of the format film window 54th

The X position of the format sheet window 78 may be e.g. by wrapping the window film blade 78 to the holding and positioning pin 66 at the trailing end of the adapter element 74 are made. Another possibility for positioning the window film blade 78 results from the fact that the adapter element 74 fixing this is in turn being suspended on the holding and positioning pin 66 on the lateral surface 22 of the knife roller 10 in the X direction.

This depends on the distance of the borders 86 and on the processing requirements.

The representation according to FIG. 7 is to take a one-piece format film window 54. This also includes the front edge 60 and the rear edge 62. The recess 84 of the one-piece format foil knife 54 is defined by the boundaries 86. As FIG. 7 shows, within the recess 84, the window foil blade 78 is fixed by the adapter member 74. The adapter element 74 is mounted with its slot-shaped openings 68 in the holding and positioning pins 66, which are located at the boundary 86 of the recess 84 on the side which is parallel to the front edge 60 and parallel to the two trailing edges 62. At the trailing edge of the adapter element 74, the window foil blade 78 is mounted with its slot-shaped openings 68 in the holding and positioning pins 66. This in FIG. 7 Window film knife 78 shown also shows a circumferentially formed cutting edge 58, which limits the recess 82, ie, the introduced into the sheet material window opening, such as an envelope or an envelope window.

With reference numeral 80, 80.1 suction openings are referred to, which lie in the integrally formed format foil knife 54. All located within the cutting edge 58 of the Fonnatfolienmessers 54 suction ports 80.1 serve the transport of the blank, ie the sheet from which the envelope contour is cut, while all lying outside the cutting edge 58 suction ports 80 serve the Schnippeltransport. In the FIG. 7 Suction openings 80.2 lying within the window cutout 82 serve to transport the cutout window cutout of the window cutout 82.

From the illustration according to FIG. 8 is an integrally executed format sheet gauge 54, which has a recess 84 within which a window film blade 78 is positioned by means of a strip-shaped adapter element 76.

As FIG. 8 shows, the window foil blade 78 in contrast to the embodiments described above according to the FIGS. 4 to 7 not in holding and positioning pin 66 (pin cam) mounted, but magnetically or by negative pressure on the lateral surface 22 of the knife roller 10 according to the FIGS. 1 and 2 fixed. This in FIG. 8 Window foil knives 78 positioned in the recess 84 are positioned by the adapter strip 76 with respect to the boundary 86 running parallel to the trailing edge 62. This has a length L or a width B ₁ , cf. Representation according to FIG. 3 ,

Due to the effect of embedded in the lateral surface 22 magnetic elements 50 and the negative pressure of the lateral surface 22 of the knife roller 10, both the adapter element 76 and the window foil blade 78 are fixed. This has analogous to the embodiments shown above, the circumferential cutting edge 58, which limits the recess 82. Also in FIG. 8 illustrated, positioned by the adapter member 76 window foil knife 78 has slot-shaped juxtaposed openings 68 at its front edge. In addition to the fixation by applying vacuum to the lateral surface 22 and for fixing by embedded in the lateral surface 22 magnetic elements 50, which could in FIG. 8 represented by the strip-shaped adapter member 76 positioned window foil blade 78 are also mounted with its slot-shaped openings 68 when using a correspondingly configured adapter element in the holding and positioning pins 76, see. the above embodiments.

The representation according to FIG. 9 is also to be taken from an integrally formed format film knife having a split front edge 60 and a continuously formed trailing edge 62.

The one-piece format foil knife 54 delimits the recess 84, which is framed laterally by a boundary 86. Analogous to the above according to FIG. 8 already outlined variant is located within the recess 84 at its parallel to the trailing edge 62 extending portion of the boundary 86, the adapter element 76 in strip form. The length of the strip-shaped adapter element 76 is denoted by L, whose width is B ₁ . By this strip-shaped adapter member 76, the window foil blade 78 is fixed with respect to the Y direction. A fixation in the X direction is achieved by the action of the magnetic elements 50 embedded in the lateral surface 22 or by the negative pressure on the lateral surface 22 of the knife roller 10.

Furthermore, the illustration according to FIG. 9 can be seen that another window foil blade 78 is suspended in holding and positioning pins 76 on the lateral surface 22 of the knife roller 10. At the in FIG. 9 shown window foil knife 78 may be the previously in connection with the embodiments according to the FIGS. 4 to 8 designated window foil blade 78 act. Its displacement in the X direction is possible by simply hanging on the holding and positioning pin 76. The window foil blade 78 is fixed primarily by magnetic force; the negative pressure of the lateral surface 22 has a supporting effect.

In contrast to the embodiments described above according to the FIGS. 4 to 8 are in the recess 84 according to the embodiment in FIG. 9 several, namely 2 window film knife 78 positioned. These are fixed on the holding and positioning pin 66 (pin cam), the magnetic force and the negative pressure of the knife roller 10, or on the magnetic force and the negative pressure of the knife roller 10.

Due to the illustrated variable positionability in the Y-direction (circumference), as in the X-direction (axial direction), windows in envelopes, for example, can be made in arbitrary positions.

FIG. 10 shows a further embodiment of an integrally formed format film knife.

As FIG. 10 The integrally formed format foil knife 54 comprises the leading edge 60 and the trailing edge 62. These extend continuously in the X direction, ie in the axial direction with respect to the knife roller 10. In the integrally formed format foil knife 54 is a recess 84 which is from the boundary 86 is limited. As further out FIG. 10 As can be seen, for example, a first of the three window foil knives 78 arranged in the recess 84 is fixed via the strip-shaped adapter element 76. This is executed in a length L and in a width B ₂ , cf. Representation according to FIG. 3 , The window film knife 78 also includes at its leading end the slot-shaped openings 68, which applies to all of the three located in the recess 84 window film knife 78. Another of the window film blade 78 is mounted with its slot-shaped openings 68 in holding and positioning pins 66 at the trailing end of the adapter element 74. This hangs on a pin strip of holding and positioning pins 66 on the circumference of the knife roller 10th

For reasons of common parts use, the three in FIG. 10 Window foil knives 78 used in the recess 84 are identical and can be arranged in the manner shown at different positions with respect to the axial direction (Y coordinate) and the circumferential direction (X coordinate) in the recess 84 of the integrally formed format foil knife 54. Analogous to the above-mentioned embodiments, the three are also in the recess 84 according to the embodiment in FIG. 10 shown window foil knife 78 on the one hand by the magnetic elements 50 embedded in the lateral surface 22 are magnetically fixed and, on the other hand, subjected to negative pressure on the lateral surface 22 of the knife roller 10 by applying negative pressure to the suction openings 24 as shown in FIGS FIGS. 1 and 2 attached.

Within the cutting edge 58 are the suction openings 80.1, which serve to transport the blank, whereas the outside of the cutting edge 58 of the size film blade 54 suction openings 80 serve to remove the snippets formed during cutting.

FIG. 11 shows a format sheet knife 54, the front edge 60 is formed divided and the trailing edge 62 is continuous. In the integrally formed format foil knife 54, the recess 84 is bounded by the boundary 86.

In the lower half of the recess 84 of the one-piece format foil knife 54 there are three window foil knives 78. One of the window foil knives 78 is positioned with the aid of the strip-shaped adapter element 76 in the circumferential direction (Y direction). The or the window foil blade 78 are fixed in the X direction by magnetic force, optionally by negative pressure of the lateral surface 22 of the knife roller 10.

Another, second window foil blade 78, also provided with a circumferential cutting edge 58, is mounted with its slot-shaped openings on holding and positioning pins 66 at the trailing end of the adapter element 74. This in turn has at its leading end also in a row next to each other arranged slot-shaped openings 68 which are connected to in FIG. 11 not shown holding and positioning pins 66 are fixed. Also, this further window foil blade 78 is fixed by hanging in a formed on the lateral surface 22 of the knife roller 10 series of holding or positioning pin 66 by the action of the magnetic force of the magnetic elements 50 and by the action of the negative pressure.

Finally, another third window foil blade 78 is in turn fixed by being hooked into the strip or row of holding and positioning pins 76 formed on the lateral surface 22 of the knife roller 10, by the action of the magnetic force and by the negative pressure of the lateral surface 22 of the knife roller 10.

The representation according to FIG. 11 can be further seen that the integrally formed format foil knife 54 can accommodate at least three identical window foil blade 78. Of course, in the upper half of the bounded by the boundary 86 recess 84 more window foil blade 78 can be accommodated. Depending on the size of the recess 82, which is to be produced in each case, larger or smaller window foil diameter 78 as in the preceding embodiments according to the FIGS. 4 to 11 shown, find use.

LIST OF REFERENCE NUMBERS

10 knife roll 76 strip-shaped adapter element 12 carrier wave 78 Window film knife 14 camp 80 suction opening 16 machine frame 80.1 Suction opening for transport 18 gear 80.2 Suction opening Schnippelentfernung 20 Roll body part 82 pane 22 lateral surface 84 recess 24 suction opening 86 boundary 26 suction 88 first knife part 28 control valve 90 second knife part 30 Distance and centering bush 32 Saugluftkanäle 34 Fresh air ducts 36 Saugluftzuführung 38 3/3-way valve 40 Through Hole 50 magnetic elements 52 direction of rotation 54 Format foil cutter 56 baseplate 58 cutting edge 60 leading edge 62 trailing edge 64 breakthrough 66 Holding and positioning pins 68 slotted opening 70 front area 72 line 74 adapter element

Claims (11)

1. Foil-blade arrangement (54, 78, 88, 90) in particular for a blade roller (10) with window foil blades (78) and format foil blades (54, 88, 90) for producing window cutouts (82), wherein the window foil blades (78) are provided with a cutting edge (58) and the foil-blade arrangement (54, 88, 90) and the window foil blades (78) are fastened magnetically and/or under the action of negative pressure on a lateral surface (22) of the blade roller (10), characterized in that the window foil blades (78) can be positioned in a variable manner in relation to the format foil blades (54, 88, 90) in the axial and circumferential directions of the blade roller (10) by adapter elements (74, 76).
2. Foil-blade arrangement (54, 78, 88, 90) according to Claim 1, characterized in that the adapter elements (74, 76) are configured in strip form (L, B₁, B₂) and/or in rectangular form.
3. Foil-blade arrangement (54, 78, 88, 90) according to Claim 1, characterized in that the adapter elements (74, 76) comprise cutting edges (58) and/or slot-like openings (68) and/or retaining and positioning pins (66).
4. Foil-blade arrangement (54, 78, 88, 90) according to Claim 1, characterized in that the format foil blades are configured in one (54) or more (88, 90) parts and comprise at least one aperture (84) which is bounded by peripheries (86).
5. Foil-blade arrangement (54, 78, 88, 90) according to Claims 3 and 4, characterized in that the aperture (84) is bounded by the periphery (86) on which are located retaining and positioning pins (66) which engage in slot-like openings (68) of the adapter elements (74).
6. Foil-blade arrangement (54, 78, 88, 90) according to Claim 1, characterized in that the adapter elements (74, 76) are configured as a set of adapter elements (74, 76) in various geometries (L, B₁), (L, B₂) and have slot-like openings (68) along one edge, preferably the leading edge.
7. Foil-blade arrangement according to Claim 1, characterized in that the adapter elements (74, 76) are produced from magnetically permeable material.
8. Foil-blade arrangement according to Claim 1, characterized in that the slot-like openings (68) run along a front edge of the adapter elements (74).
9. Foil-blade arrangement according to Claim 1, characterized in that, within the aperture (84), the position of the window foil blades (78) in the circumferential direction (Y direction) is defined by adapter elements (76) supported on the periphery (86).
10. Foil-blade arrangement according to Claim 1, characterized in that, within the aperture (84), the position of the window foil blades (78) in the circumferential direction (Y direction) is defined by adapter elements (74) which are provided with slot-like openings (68)' which, in turn, are fitted in retaining and positioning pins (66).
11. Foil-blade arrangement according to Claim 1, characterized in that the window foil blades (78) have an interrupted or an all-round cutting edge (58).

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