EP1419898A1 - Stapler used in the collation of printed articles to form printed products - Google Patents

Abstract

Stitching device (1) for producing printed products consisting of wire-stitched printed items comprises an adjustable stitching machine for adjusting a stitch to the thickness of the bound printed item. The stitching machine is connected by adjusting devices to a control (22) forming a measuring device arranged before the stitching machine on a conveying device for measuring the thickness of the printed items or to a control processing stored data of the printed item. Preferred Features: The adjusting devices are connected to a controllable fixed drive device (64) for adjusting the height of the conveying device.

Description

The invention relates to a stapling device for manufacture of printed products from staple-bound printed products, consisting of a conveyor on which folded Print products astride one above the conveyor at least one oscillating driven saddle carriage fortified, to form staple legs a bender and for pushing the clamp legs through the printed products a stapling unit having a driver on the conveyor opposite bending device with adjustable distance trained stapler are fed, and a the wire feed device determining the stitching wire length and an adjustable wire cutter that the stapler assigned.

Staplers of this type are known in saddle stitchers, with which different printed products on a collection line merged into a printed product and then to be stapled to the fold.

With the "Tempo" saddle stitcher from Muller Martini brochure 410 / 9708- are collected on a conveyor Print products during transport through the moving Stapler stapled.

With another, falling under the same tacking principle Saddle stitchers are transported through the conveyor Print products at the end of the conveyor from a subsequent one Conveyor system taken over and accelerated to the stapling position where they are stapled at a standstill and then transported on become.

With a drum saddle stitcher, the printed products are run along a surface line of a rotating around a horizontal axis Conveyed drum and then at a standstill on the rotating Drum stapled by a running stapler.

The object of the invention is a stitching device to create that is capable of making printed matter different Thickness with high reliability, without manual operation the setting means of the affected devices of a stapling device and without affecting the high production output manufacture, even if the printed products in an order of irregular thickness.

According to the invention the object is achieved in that the Adaptation of a staple to the thickness of the bound printed products adjustable stapling machine by means of adjustment means one for measuring the thickness of the printed products in front of the stapling machine measuring device arranged on the conveyor trained control or with a stored data of the Print products processing control is connected.

It is advantageous if the setting means of the stapling machine and the devices assigned to it can be set and adjusted jointly by their own, fixed drive means connected to the control so that an adjustment can be carried out reliably and quickly without causing an interruption in production.
This affects function-controlled individual drives of the stapling machine for a saddle stitcher.

It is useful if the height is adjustable Conveyor device for adjusting the height of the Conveyor device with a controllable, stationary drive means are connected so that this adjustment process at the same time with other controlled conversions can.

The settings or adjustments of the setting means should advantageous during the run of the stapler or one Saddle stitchers, preferably before or after a stitching cycle.

For a device with one according to the thickness of the printed matter adjustable wire feeder can be adjustment means the wire feeder through a staple carriage parallel to its direction of movement Drive shaft of a drive means and one each Associated stapling unit, slidable on the drive shaft attached drive wheel of a gear so that et al flexible cables for the electrical energy supply spared from rapidly changing movements of the staple carriage stay.

It turns out to be a simple and reliable design, though the gear is designed as an angular gear.

A device with a thickness is advantageous of the printed products with adjustable knife holder Wire cutting device formed by adjusting means, the one on the knife holder in an oblique to the direction of movement engaging guideway of the tacking carriage Have driver pin, which is adjustable by a height Guide bar with one of at least one angle-controlled Electric motor connected drive means is.

This enables the knife holder to be driven on cams several stapling units acting on the staple carriage attached cam bar in a guide link of the Guide bar can be driven to oscillate.

Alternatively, in the case of a device with a one according to the Knife holder adjustable in thickness of the printed products Wire cutter, one on the knife holder into one extending obliquely to the direction of movement of the stitching carriage Driver pin engaging the guideway via a lever gear be connected to a drive means.

This can expediently be used as an angle motor controlled electric motor trained drive means with a parallel to the stitching carriage drive-connected to the shaft passing through it and on the shaft one with a cam bar actuating handlebar connected lever to be attached.

In a device according to the invention, with a according to the Thickness of the folding device which can be adjusted, the at least one attached to an adjustable bending beam Bending block, the adjustment means for the sake of simplicity through a gearbox with a drive shaft of a fixed, angle-controlled electric motor be connected.

The electric motor can be determined using a drive controller limited torque can be controlled. created due to a too thick printed product an overload, which too Would cause damage, the electric motor acts like a spring and gives way to the overload.

In this regard, it is useful if the adjustment means a movable on a stationary rack, with the bending beam have drive-connected tooth segment that with one on the drive shaft of a fixed, angle-controlled Electric motor arranged lever arm is coupled.

Provenly, the drive shaft through a tacking carriage pushable in the direction of movement and torque-transmitting shaft-hub connection with the lever arm be connected.

With regard to the height of the thickness of the printed products to be stapled adjustable conveyor that is a chain guide for at least one revolving link chain, to which individual parts of a roof-shaped support are attached , it is advantageous if the chain guide is facing down has extending lifters, which by lever gear the drive shaft are connected.

Angle-controlled are the driving means of the individual devices Electric motors, also called servomotors, intended.

Fig. 1

eine auszugsweise Darstellung eines Sammelhefters im Bereich einer Hefteinrichtung,

Fig. 2

eine Darstellung der Hefteinrichtung des in Fig. 1 veranschaulichten Sammelhefters,

Fig. 3

eine auszugsweise Ansicht von hinten der in Fig. 2 gezeigten Hefteinrichtung,

Fig. 4

eine Seitenansicht eines Heftaggregates der Hefteinrichtung,

Fig. 5

eine Heftklammer,

Fig. 6

eine Darstellung des Heftaggregates von hinten,

Fig. 7

das Heftaggregat von der Vorderseite der Hefteinrichtung,

Fig. 8

einen Schnitt durch den Heftschlitten gemäss VIII-VIII in Fig. 10,

Fig. 9

eine Darstellung der Antriebsvorrichtung der Umbiegevorrichtung,

Fig. 10

einen Schnitt durch die Umbiegevorrichtung gemäss X - X in Fig. 8,

Fig. 11

eine auszugsweise Darstellung der Hefteinrichtung mit bezüglich Fig. 4 alternativen Einstellmitteln der Drahtschneidvorrichtung,

Fig. 12

eine auszugsweise vergrösserte Darstellung der Einstellmittel gemäss Fig. 11 und

Fig. 13

eine Darstellung einer Antriebsvorrichtung zur Höhenverstellung der Fördervorrichtung.

The invention is then explained with reference to the drawing, to which reference is made with regard to all details not mentioned in the description, using an exemplary embodiment. The drawing shows:

Fig. 1

a partial representation of a saddle stitcher in the area of a stapling device,

Fig. 2

2 shows a representation of the stitching device of the saddle stitcher illustrated in FIG. 1,

Fig. 3

2 shows a partial view from behind of the stapling device shown in FIG. 2,

Fig. 4

a side view of a stapling unit of the stapling device,

Fig. 5

a staple,

Fig. 6

a representation of the stapling unit from behind,

Fig. 7

the stapling unit from the front of the stapler,

Fig. 8

10 shows a section through the stitching carriage according to VIII-VIII in FIG. 10,

Fig. 9

a representation of the drive device of the bending device,

Fig. 10

7 shows a section through the bending device according to X - X in FIG. 8,

Fig. 11

4 shows an excerpt of the stitching device with alternative setting means of the wire cutting device with respect to FIG. 4,

Fig. 12

an enlarged view of the setting means according to FIGS. 11 and

Fig. 13

a representation of a drive device for height adjustment of the conveyor.

1 provides excerpts of a saddle stitcher in the stitching area, where a stitching device 1 is arranged on a conveyor device 2. On the conveying device 2, carriers 4 attached to a traction device with a saddle-shaped support 3 are straddled, or printed products collected into printed products 5 are conveyed in the conveying direction F of the stapling device 1, where they are stapled on the fold by the traveling stapling machine. The stapling machine consists of two stapling units 6, 7 and a bending block 8, 9, each associated with the latter, of a bending device 10, all of which are fastened to a stitching carriage 11 driven in an oscillating manner along the conveying device 2. The stapler 1 works according to the machine cycle of the saddle stitcher. The tacking carriage 11 is guided on two rods 13, 14 connected to a machine frame 12.
The operation of the stapling units 6, 7 is described in CH-A-549 443 and is explained here within the scope of the scope of the present invention. The stapling wire 15 is fed to the stapling units 6, 7, clamped between two friction wheels 16, 17 via a wire guide 18 of the required wire section length corresponding to a staple size. The drive of the friction wheels 16, 17 take over two intermeshing gear wheels 19, 20 which are firmly connected to the friction wheels 16, 17 (see FIG. 7).
In order to be able to vary the wire section length for the staples, which are shown in FIG. 5, an electric motor 21 (shown in FIG. 2), which can be controlled in terms of the rotation angle and is arranged in a fixed manner, is required, which on the one hand has one of the friction wheels 19, 20 and on the other hand has a control 22 is connected to the setting of the electric motor 21. With such a solution it can also be avoided that the cables of the energy supplied to the electric motor 21 are not subjected to any wear-promoting movements of the stapling device 1. This affects the structural design of the stitching carriage 11 and the necessary adjustment means. For this purpose, it is proposed below that the electric motor 21 is connected to the machine frame 12 and on the drive shaft 23, which passes through the stitching carriage 11 parallel to its movement, has a bevel gear 24, 25 assigned to each stitching unit 6, 7, which has a drive bevel gear 26 , 27 of the stapling unit 6, 7 forms a bevel gear 28, 29, the drive bevel 26, 27 being located on the shaft 30 of the friction wheel 17 (see FIG. 3). The shaft 30, for example a multi-spline or polygon shaft, has a positive cross-section for driving the bevel gears 24, 25, so that the bevel gears 24, 25 can be displaced thereon. The shaft 30 is supported in bearing blocks 31, 32 of the stapling units 6, 7 which are fixedly connected to the stapling carriage 11 and the bevel gears 24, 25 are roller-supported in the bearing blocks 31, 32. The tacking carriage 11 has side walls, of which the shaft 30 facing the electric motor 21 is penetrated with play. Alternatively, the bearing blocks 31, 32 could also be fastened to the tacking carriage 11.

In order to be able to form a symmetrical staple 33, as shown in FIG. 5, a regular distribution of the wire section required for this, the length of which is determined by the wire feed of the wire feed device, is required.
The wire section fed to the stapling head 34 formed by the bender 35 and driver 36 for a staple 33 ends at a wire cutting device 38 arranged in front of the stapling head 34 in the wire feed direction. The wire section to be deformed into a staple 33 is evenly distributed over the bender 35, so that a staple 33 arises with legs 39 of equal length. Due to the different sizes of a staple 33, the wire cutting device 38 is to be adapted to the staple size in such a way that the wire section comes to lie evenly distributed under the bender. A movable gripper 40 on the stapling head 34 of the stapling unit 6, 7 is also involved, which holds the wire section and positions it for bending. The wire cutting device 38 consists of a knife holder 41 with a wire feed-through 42, at the rear end of which there is a knife 43 which is connected to the retraction movement of the driver 36 and which separates the wire section with the aid of the wire feed-through 42 as a counter knife.

So that the wire section is evenly distributed on the stitching head 34 will, according to the previous or nachgeschoben Wire end, the knife housing 41 is offset so that after the Separation cut by the knife 43 gripped by the gripper 40 cut wire section the stapling position in the stapling head occupies. To perform the stapling process with different wire section length is the knife holder 41 through an obliquely upward guide track 44 trained, in which a driver pin 45 engages the a slide 46 is attached. 4 and 7 is located the knife holder 41 in the position for shortest Wire sections. The slide 46 is in turn designed as a plate and led on all sides. On the back the Slider 46 a drive cam 47, which in a cam bar 48 engages the slide 46 of two knife holders 41 connects. The ends of the cam bar 48 form arms 49, the free ends in a slot-like guide link 51 a guide bar 52 projecting freely rotatable guide rollers 50 have. The guide bar 52 extends below the stapling units 6, 7 and the guide link 51 has a length of at least the path length of the stitching carriage 11 on. At the ends, the guide bar 52 is in each case attached to a support 53, which has an internal thread for a threaded spindle 54 has. The height adjustment of the guide bar 52 provided threaded spindle 54 store in one on the machine frame 12 attached bracket 55 and are with a stationary electric motor 56 drive connected. Depending on the thickness of the printed products 5 to be stapled, the Knife holder 41 of the stapling units 6, 7 via the electric motors 56 adjusted by the controller 22 or to the thickness of the tacked printed product 5 adapted. A change in Height of the guide bar 52 takes place before or after the stapling process of a printed product without the machine cycle there is a delay. Incidentally, 5 'in FIG. 1 a stapled printed product is shown, which then is taken from the edition 3.

An alternative version of the setting means for a knife holder 41 is that in an oblique upward direction extending guide track 44 engaging driver pin 45 over a gear train 56 with a fixed electric motor 57 is connected to the drive (see FIGS. 12 and 13), the drive shaft 58 of the lever gear 56 in turn form-fitting can be formed and thereupon at the end of the stitching slide 11 a one-armed lever 59 can be slidably stuck. A handlebar 60 is connected to the one-armed lever 59 at the other end - as already shown in FIG. 4- on a cam bar 48 is articulated. The cam bar 48 is itself adjustable in height arranged in a guide 93.

2, 8, 9 and 10. The bending device 10 consists of two bending blocks 8, 9, which together on the stitching carriage 11 in accordance with the occurring difference in thickness of the printed products 5 compared to a stitching head 34 by one Bending beam 61 are adjustable and adjustable in height. The bending carrier 61 is, for example, guided vertically on a wedge 62 fastened to the tacking carriage 11 and held on the tacking carriage 11 by means of screws 63, which each penetrate a vertical slot.
The height of the bending blocks 8, 9 is set by an angle-controlled electric motor 64, which is fixed in place on the machine frame 12. This electric motor 64 has a drive shaft 65 which has approximately the width of the stitching carriage 11 and its stroke for stitching. The drive shaft 65 is mounted in the stitching carriage 11 on two spaced stiffening ribs 66. Between the stiffening ribs 66 there is a torque ball bushing 67, which is designed as a displaceable and torque-transmitting shaft-hub connection and transmits the rotational movement of the drive shaft 65 to a sleeve 68, which is mounted on the drive shaft 65 and moves with the tacking slide 11. The sleeve 68 and the drive shaft 65 are mounted together by ball bearings in the stiffening ribs 66. A clamping lever 69 is attached to the ends of the sleeve 66. This clamping lever 69, which can be pivoted by the electric motor 64 and the drive shaft 65, connects, by means of a rod 70, a toothed segment 72 mounted on a parallel shaft 71, which meshes with a toothed rack 73 fastened to the tacking carriage 11. The movements of the drive shaft 65 raise or lower the shaft 71, which is connected to the bending support 61 by bearing blocks 74, and the bending support 61 to a selected dimension, which corresponds approximately to a difference in thickness between two printed products 5. 8 to 10 also refer to the bending device 10 with which the staple wire is closed to the staple via pivotable wings (not visible).

These wings are driven at the head of the bending blocks 8, 9 from a control curve 75, along which through the Stapling carriage movement against the shaft 71 Spring force deflectable pivot lever 76 by a control roller 77 actuated ram 78 guided on both sides of the staple carriage 11. These plungers 78 are connected to shaft 71 by lever 79 connected.

11 and 13 convey an embodiment in which the Conveying device 2 simultaneously with the bending device 10 is adjustable in height. For this purpose, on the drive shaft 65, respectively another clamping lever on both sides of the stitching carriage 11 80 provided on the shaft 65. The conveyor 3 exists from a chain guide 81 on which two revolving link chains 82 are performed. There are individual parts on the chains 82 83 plugged on, which form a roof-shaped support 3. In the 11 and 13 are individual parts falling to one side 83 shown. At the top of the edition 3 form the individual parts 83 a gap through which the bending blocks 8, 9 each be excavated. In the direction of conveyance F of the printed products 5 are in front of the bending blocks 8, 9 and adjustable with these connected, guide elements 84 arranged which the printed products 5 lead to the bending blocks 8, 9. Change this the height of the conveyor 2 takes place by means of lever gear 85, which acts on the chain guide 81 from below. For this, two extend at a distance from the chain guide 81 connected lifters 86 down with a roller 87 on a first lever arm 88 of an angled double lever 89 stand. The approximately 90 ° angled second lever arm 90 is at the free end by a link 91 with the clamping lever 80 connected. The lifters 86 are guided in a frame 92 which is firmly connected to the machine frame 12.

Claims (15)

Stapling device (1) for producing printed products (5, 5 ') from staple-bound printed products, consisting of a conveyor device (2) on which folded printed products astride at least one attached, at least one attached, above the conveyor device (2) to an oscillatingly driven stitching carriage (11). to form staple legs a bender (35) and to pass the staple legs through the printed products a driver (36) having a stapling unit (6, 7 on the conveying device (2) with adjustable spacing opposite bending device (10) are fed to the stapling machine, and one Wire feed device (37) determining the stitching wire length and an adjustable wire cutting device (38) which are assigned to the stitching machine, characterized in that the stitching machine which can be adjusted to adapt a staple to the thickness of the bound printed products is adjusted by means of a means for measuring the thickness of the printed products in front of the Stapling machine on the conveying device (2) arranged control device (22) or with a stored data of the printed products processing control (22) is connected. Device according to claim 1, characterized in that setting means of the stapling machine and the devices (2, 10, 37, 38) assigned to it set together by means of their own stationary drive means (21, 56, 57, 64) connected to the control (22) - and are adjustable. Device according to claim 2, with a height-adjustable conveyor device (2), characterized in that the adjusting means for height adjustment of the conveyor device (2) are connected to a controllable, fixed drive means (64). Device according to one of claims 1 to 3, with a wire feed device which can be adjusted according to the thickness of the printed products (5), characterized in that the setting means of the wire feed device (37) is provided by a drive shaft (30) passing through the stitching carriage (11) parallel to its direction of movement Drive means (21) and in each case a drive wheel (26, 27) of a transmission (28, 29) assigned to a stapling unit (6, 7) and slidably fastened on the drive shaft (30) are formed. Device according to claim 4, characterized in that the wire feed device (37) has two friction wheels (16, 17) driven by a gear train (19, 20) and transporting the wire (15). Device according to one of claims 4 and 5, characterized in that the gear (28, 29) is designed as an angular gear. Device according to one of claims 1 to 6, with a wire cutting device (38) having a knife holder (41) adjustable according to the thickness of the printed products (5), characterized in that the setting means of the wire cutting device (38) one on the knife holder (41) have a guide pin (45) engaging obliquely to the direction of movement of the tacking carriage (11), which is connected by a height-adjustable guide bar (52) to a drive means consisting of at least one angle-controlled electric motor (56). Device according to claim 7, characterized in that a cam bar (48), which acts on drive cams (47) of the knife holders (41) of a plurality of stitching units (6, 7) and is fastened to the stitching carriage (11), in a guide slot (51) of the guide bar (52 ) can be driven to oscillate. Device according to one of claims 1 to 6, with a wire cutting device (38) having a knife holder (41) which can be adjusted according to the thickness of the printed products (5), characterized in that a on the knife holder (41) in an oblique to the direction of movement of the stitching carriage ( 11) extending guideway (44) engaging driver pin (45) is connected via a lever gear (94) to a drive means (57). Device according to claim 9, characterized in that the drive means designed as an electric motor (57) is drive-connected to a shaft (58) passing through the tacking carriage (11) parallel to its direction of movement and on the shaft 58) one with a cam bar (48) which actuates each Handlebar (60) connected lever (59) is attached. Device according to one of claims 1 to 10, with a bending device (10) which can be adjusted according to the thickness of the printed products (5) and which has at least one attached bending block (8, 9) on an adjustable bending support (61), characterized in that the adjusting means are connected by a gear to a drive shaft (65) of a stationary, angle-of-rotation-controlled electric motor (64). Device according to Claim 11, characterized in that the setting means have a toothed segment (72) which is movable on a stationary rack (73) and is connected to the bending carrier (61) in a drive-connected manner and which has a lever arm arranged on the drive shaft (65) of the electric motor (64) (69) is coupled. Device according to claim 12, characterized in that the drive shaft (65) is connected to the lever arm (69) by a displaceable and torque-transmitting shaft-hub connection (67, 68) which penetrates the tacking carriage (11) in the direction of movement. Device according to one of Claims 3 to 13, with a conveyor device (2) which can be adjusted in height to the thickness of the printed products (5) to be stapled and which has a chain guide (81) for at least one revolving link chain (82), on which individual parts (83 ) are attached to a roof-shaped support, characterized in that the chain guide (81) has downwardly extending lifters (86) which are connected to the drive shaft (65) by lever gears (85). Device according to claim 11, characterized in that the electric motor (64) is designed to be drivable with an adjustable torque.

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