EP1182018A1 - Apparatus and method to automatic cut the open sides of bound printed matters - Google Patents

Abstract

The device has a plurality of cutting stations (B, C) and a transport device (7) for transporting a printed product (31) from a first (A) to a second (B) and from the second (B) to a third (C) Cutting station. The printed products (31) are trimmed in each cutting station (A, B, C) with a fixed knife (1, 2, 3) on one of the three open side edges. The cutting stations (A, B, C) are preferably each provided with adjustable positioning means (21-24) with which the printed products (31) are positioned and aligned in the individual stations (A, B, C). Changing the format is very easy and possible without changing the stamp and cutting unit. All formats can be squeezed over large areas for perfect cuts. <IMAGE>

Description

The invention relates to a device for automatic trimming the open side edges of bound printed products according to the preamble of claim 1.

A device of this type is known as "Merit S "from Muller-Martini AG. This is a so-called Three-knife trimmer in a cutting station Knife aligned for the transport direction for the front cut and two spaced apart in the direction of transport aligned knife for the head and foot cut. The print products to be trimmed are fed with conveyor belts fed to the cutting station and precisely aligned in it. The printed products are positioned using a press stamp pressed. The baling pressure is adjusted pneumatically. The cutting takes place against cutting strips made of plastic.

So that a perfect cut quality even with books a thickness of, for example, 4 cm is ensured for the "Merit S" the printed products with the press stamp in the squeezed essentially over the entire format. The press stamp is therefore format-specific. When changing a Formats, a new press stamp must be installed. This Furnishing is therefore only suitable for series production. For the production of short runs or individual products with different formats every time you change formats the stamps changed and the cutting units can be adjusted to adapt to the format. Short runs or single products can not with this facility be processed economically.

EP 0 842 746 A is a trimming device of the open side edges of bound printed products become, in each of which two printed products to be processed positioned on a rotatable jig become. The open side edges are cut one after the other with a knife, after a cut the Print products are rotated. The printed products are here only squeezed in a comparatively small area. With this facility too, the format should change Press punches can be replaced when an impression is made the whole format should be done.

The invention has for its object a device mentioned type to create a perfect cut quality when trimming books and brochures and which are also suitable for short runs and individual products suitable. The task is with a generic facility solved according to claim 1. In the device according to the invention and the three-sided trimming is carried out according to the method according to the invention of a book not in a cutting station, but sequentially in several staggered cutting stations carried out. The pressing device of each cutting station and in particular the press stamp can be of a maximum format be set up. For printed products with a smaller one The stamp can format the printed product in the appropriate format Cutting station not in this cutting station project pages to be processed without disadvantages. Without change the press stamp can thus be pressed and all printed products be trimmed to the maximum format or a smaller one Format. A change of format is therefore a change the press stamp is not required. Because every cutting station only one knife needed, these massive knives can each have a fixed position and therefore do not have to are difficult to adjust.

The processing of any sequence of book sizes in succession is then particularly economical and high Performance possible if according to a further development of the invention Stops for positioning and aligning the cutting print products in the individual cutting stations are adjustable. Such adjustment is from measure to measure possible, so that any sequence can be done with little effort of book sizes can be processed one after the other. Preferably according to a development of the invention Change in book thickness absorbed by spring-loaded press stamps. If the book thickness changes, the press stamps must be changed not be adjusted to the thickness of the printed products.

Another advantage of the device according to the invention is seen that the order of the cuts chosen arbitrarily and can therefore be aligned to the printed product. Head, foot and front cuts can thus be made in any order be performed. The cutting stations can be in be arranged in a line one after the other. However, there are also other arrangements possible. In particular, the cutting stations be arranged so that, for example, printed products with the smallest format or printed products with the largest format straight through the cutting stations can be. The corresponding printed products, for example print products with the smallest format then only minimally to the side in the individual stations be aligned. The arrangement of the individual cutting stations can thus be tailored to the needs of the user become. The cutting stations can be offset, for example to each other or arranged so that the printed products passed through the cutting stations at an angle to the spine become. The printed products are then each one their corners aligned with stops.

Further advantageous features result from the dependent ones Claims, the description below and the Drawing.

Fig. 1

schematisch eine räumliche Ansicht einer erfindungsgemässen Einrichtung,

Fig. 2

eine Draufsicht auf die Einrichtung gemäss Fig. 1,

Fig. 3

eine Seitenansicht der Einrichtung gemäss Fig. 1,

Fig. 4

eine Draufsicht auf eine Einrichtung gemäss einer Variante,

Fig. 5

eine Draufsicht auf eine Einrichtung gemäss einer weiteren Variante, und

Fig. 6

schematisch eine räumliche Ansicht einer erfindungsgemässen Einrichtung gemäss einer weiteren Variante.

Exemplary embodiments of the invention are explained in more detail below with reference to the drawing. Show it:

Fig. 1

schematically a spatial view of a device according to the invention,

Fig. 2

2 shows a plan view of the device according to FIG. 1,

Fig. 3

2 shows a side view of the device according to FIG. 1,

Fig. 4

a plan view of a device according to a variant,

Fig. 5

a plan view of a device according to another variant, and

Fig. 6

schematically a spatial view of an inventive device according to another variant.

The device shown in FIGS. 1 to 3 has one horizontally aligned cutting table 6 three in a line cutting stations A, B and C arranged one behind the other. Each cutting station has a knife 1, 2 or 3, which in in a known manner to carry out a cut vertically is driven and has a lower cutting edge 4, with a cutting bar 5 attached to the cutting table 6 or a lower knife works together.

Each station A, B and C is stamped with 13, 14 or 15 provided, the means for pressing, not shown here is vertically movable. The one pressed downwards Pressure is preferably with springs not shown here cushioned. The drive of press punches is known to the specialist known.

The device has a transport device 7 that a Endless conveyor belt 12 has that around a drive roller 10 and around a deflecting roller 11 is placed and as can be seen essentially as wide as the press punches 13, 14 and is 15. The upper run of the conveyor belt 12 runs above the cutting table 6 and under the press punches 13, 14 and 15. Between the deflection roller 11 and the knife 1 is a fixed Bar 43 arranged which is part of the cutting table 6 forms, but outside the area of the transport device 7 lies. The transport direction of the transport device 7 is indicated in FIG. 1 by arrows 32 and 37. It therefore takes place in Fig. 1 from top right to bottom left.

Each cutting station A, B and C each has a sling 16, 17 and 18 respectively. These funds each have the underside several pins 19 arranged at a distance from one another, the underside just above the upper run of the conveyor belt 12 ends. The slings 16, 17 and 18 are each in the Transport direction of the transport device 7 and in the opposite direction steplessly with drive means not shown here and individually adjustable. Reach through at station A. the pins 19 each have a slot 20 of the press ram 13. The stop means 16 can thus in the area of the press ram 13 can be adjusted. The slings 17 and 18 are located each seen in the transport direction in front of the press ram 14 or 15.

The cutting stations B and C also each have slides 21 and 22 or 23 and 24, as shown in particular in FIG. 2. These slides 21 to 24 are each not individually here shown drive means in the directions of the double arrows 33 to 36 slidable. The slides 21 to 24 are each between the punch 14 and 15 and the upper run of the Conveyor belt 12 arranged. They each have one Push rod and a positioning part running transversely to it on. In Fig. 2 is the push rod using the example of the slider 23 with 23a and the positioning part with 23b. The Fig. 3 clearly shows how the slide 21 to 24 between each the upper run 12a and the press rams 14 and 15 respectively is. The slider 21 to 24 could also by others Means of transport and especially replaced by conveyor belts become.

To trim a printed product 31, this is done according to Fig. 1 in the direction of arrow 32 by means of a not shown here Transport device, for example a conveyor belt, fed to the first cutting station A. The knife 1 is not lifted off the cutting bar 5. The printed product 31 is fed to station A in such a way that its bound back on the sling 16 and thus on the pin 19th is applied and aligned with this. It's in aligned position at least in some areas on the Transport device 7. When positioning and aligning of the printed product 31 on the lifting means 16 is self-evident also the punch 13 raised. Is the printed product 31 positioned and aligned, so it is with the press stamp 13 pressed and then a front cut performed by a stroke of the knife 1. The lifting gear 16 determine the position of the front cut. For another Format are the slings 16 accordingly in the directions of the double arrow 44 shifted.

After the front cut has been made, the press ram 13 raised and by means of the transport device 7 Transported the printed product 31 to the second cutting station B, it is finally stopped on the sling 17. With the slides 21 and 22, the printed product 31 'is transverse to Transport direction of the transport device 7 shifted and positioned and aligned to perform the foot cut. The punch 14 and the knife 2 are in contrast to Fig. 1 raised. Is the printed product 31 'positioned and aligned, it is pressed with the press ram 14 and the foot cut is made by a stroke of the knife 2 executed.

If the product 31 'has been processed in the cutting station B, so the punch 14 is raised and by means of Transport device 7, the printed product 31 'to the third and last cutting station C. Here is the Printed product 31 'stopped at the slings 18. The Knife 13 and the press ram 15 are raised here. through the slider 23 and 24 becomes the printed product 31 'for the Head cut positioned and aligned. By pressing with the punch 15 and by a stroke of the knife 13 the head cut performed. The printed product 31 '' is now on trimmed the three open side edges and is lifted after of the punch 15 by means of the transport device 7 in Direction of arrow 37 of another transport device or fed to another processing station.

Three printed products 31 can be simultaneously in the device be circumcised. The cutting stations A, B and C can thus a printed product 31, 31 'at the same time and in cycles or 31 '' edit. The performance is therefore comparable to the known devices of this type. The printed products 31, 31 'and 31' 'can easily have different formats exhibit. For example, the printed product 31 '' could essentially have the format of the press ram 15. in this connection would only have to adjust the slide 23 and 24 the format of the printed product 31 '' are aligned. The Stroke of the knife 3 and also the mode of operation and arrangement of the Press stamp 15 need not be changed.

4 differs from the embodiment 1 to 3 essentially by the arrangement from cutting stations A ', B' and C 'as well as training a conveyor belt 12 '. The cutting stations B 'and C' are in the direction of transport of the conveyor belt 12 ' the cutting station A 'laterally offset. According to is Correspondingly designed cutting table 6 'is provided. The Purpose of this offset arrangement of the cutting stations B 'and C 'is that a printed product 31' '' with a very small Format with only very short alignment and positioning movements can be cut. The transport route of the printed product 31 '' 'is therefore essentially linear. The transport device As can be seen, 7 'is comparatively narrow and only takes a portion of the cutting table 6 ' on. The knives 1 ', 2' and 3 'are also preferably fixed arranged. Aligning and positioning the printed product 1 '' 'is done by moving the sling gear 16 ', 17' and 18 'and by adjusting the slide 21', 22 ', 23 'and 24'.

5 are cutting stations A ″, B '' and C '' arranged so that printed products 31, 31 'and 31' ' at an angle to a spine 45 through the cutting stations A ", B" and C "are guided. The printed products 31, 31 'and 31' 'are respectively over a corner 46, 46' and 46 '' aligned with sliders 25 to 30. A transport device 7 '' consists of two spaced apart Conveyor belts 12 ''. The feeding of the printed products 31 to this device takes place in the direction of arrow 31 a conveyor belt 8 and thus, as can also be seen at an angle to the transport direction 42 of the transport device 7 ''. Outsourcing takes place using a conveyor belt 9 in the direction of arrow 41. The correspondingly inclined Shifting the slide is with double arrows for example 39 and 40 specified. This version has the advantage that the stations A '', B '' and C '' for positioning and alignment only two sliders 25 and 26 or 27 and 28 or 29 and 30 required. Additional slings are not required. The positioning device is at this version is particularly simple.

6 is also used as a cutting base a cutting table 6 '' 'is provided, which is horizontal here is aligned but also inclined to the horizontal could. A first cutting station A '' 'is with a knife 1 '' ', a press stamp 47 and for transport and positioning with a unit 51 of a transport device 50 provided. With these sliders it becomes a to be trimmed Printed product (not shown) with the stamp 47 raised and raised knife 1 '' 'positioned for the head cut. For the cut, press ram 47 and knife 1 '' ' lowered. For the stroke of the knife 1 '' 'there are only two indicated cranks 48 provided. The feeding of the Printed products are made with a transport device, not shown here in the direction of arrow 49.

After the head cut is made, the printed product by means of the transport device 50, which consists of two units 51 and 52, each with a lower band 53 and an upper band 54 is transported to a second cutting station B '' ', where with a knife 2 '' 'after positioning the front cut is carried out. For positioning in one Direction, the unit 52 can be used, which the Printed product between the upper belt 54 and the lower belt 53 clamped and preferably driven independently of the unit 51 is. The upper bands 54 of the two units 51 and 52 can be raised. The pressing takes place by means of a Press stamp 55.

The foot cut is made in a third cutting station C '' carried out, which has a knife 3 '' 'with cranks 48 is moved vertically. The cutting station C '' 'works with the Press stamp 55 of the cutting station B '' 'and also the unit 52 can be used for positioning for the foot cut. After the foot cut is made, the printed product 57 with a transport device, not shown here ejected in the direction of arrow 56. The printed product 57 is thus with a head cut 58, a front cut 59 and provided a foot cut 60. The federal government will 61 with this Version not used for positioning.

Claims (10)

Device for automatically trimming the open side edges of bound printed products (31) such as books or brochures, with a cutting station (A) which has a cutting device with at least one knife (1) which can be driven in a vertical plane to extend the printed products (31) and a positioning device , with which the printed products (31) can be positioned on a cutting table (16) on each side edge for a cut and with a press device (13) with which the positioned printed products (31) can be pressed off essentially over the entire format for the cut , characterized in that further cutting stations (B, C) and a transport device (7, 50) for the transport of a printed product (31) each from a first (A) to a second (B) and from the second (B) to one third (C) cutting station are provided and that the printed products (31) in each cutting station (A, B, C) with a fixed knife (1, 2, 3) to one r of the three open side edges can be trimmed. Device according to claim 1, characterized in that the cutting stations (A, B, C) each have slides (21-24) with which the printed products (31) can be positioned and aligned in the individual stations (A, B, C) , Device according to claim 1 or 2, characterized in that at least one knife, preferably all three knives (1, 2, 3) have fixed positions. Device according to one of claims 1 to 3, characterized in that the second cutting station (B) and the third cutting station (C) each have at least one slide (21, 22; 23, 24) with which the printed products (31) for the Alignable cut. Device according to one of claims 1 to 4, characterized in that the printed products (31) are aligned at least in one of the cutting stations (A, B, C) on the bound side edge against stops (16, 17, 18). Device according to claim 5, characterized in that at least one stop (16) is adjustable transversely to the extent of the edge to be cut. Device according to one of claims 1 to 6, characterized in that a knife (1 ''') for the head cut and a further knife (3''') for the foot cut are arranged parallel and at a distance from one another. Device according to claim 7, characterized in that the further knife (3 ''') and a third knife (2''') for the front cut are arranged at an angle to one another. Method for automatically trimming the open side edges of bound printed products (31) such as books or brochures using a cutting device with at least one press device (13), a cutting table (6), knives (1-3) and positioning means (21-24, 51, 52 ) for positioning the printed products (31), the pressing device (13) pressing the printed products (31) essentially over the entire format, characterized in that the printed products (31) one after the other in one of three cutting stations (A, B, C ) are trimmed on an open side edge and that they are positioned for the cut in each station (A, B, C). A method according to claim 9, characterized in that after a first cut , the printed products (31) are transported in a first cutting station (A) to the second cutting station (B) and are displaced therein in a direction transverse to the transport direction (44) and thereby with respect to a knife (2nd ) is positioned, which extends in said transport direction (44).

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