EP1598210A1

EP1598210A1 - Gathering and stitching machine for brochures

Info

Publication number: EP1598210A1
Application number: EP20050102775
Authority: EP
Inventors: Rolf Böttcher; Lutz Richter; Andreas Steinert; Siegmar Tischer
Original assignee: Heidelberger Druckmaschinen AG
Current assignee: Heidelberger Druckmaschinen AG
Priority date: 2004-05-04
Filing date: 2005-04-08
Publication date: 2005-11-23
Also published as: US20050248076A1; CN1693092A; DE102004021958A1; CN1693097B; US7451969B2; JP2005319803A

Abstract

In order to optimize the effort involved in converting a saddle stitcher, which initially transports steadily transported booklets (30, 30 ') step by step to a stitching station (24) and then into an output station (29), machine components affected by process-relevant geometric parameters during a job change and a reference component Assigned to sensors (46) which deliver the phase positions of the machine components defining signals and a signal processing controller (48) matches the phase angles to at least one of the parameters that the leaflets (30; 30 ') centered in the output station (29) reach. <IMAGE>

Description

The invention relates to a saddle stitcher for brochures with a Dispensing station, machine components which a stapler, a Continuous conveyor, feeder for feeding the continuous conveyor with signatures operatively oscillating, controllable finger comprehensive Finger rail system for the step-by-step transport of the brochures and a Finger-actuating finger actuation gear include, and with Drive means for the machine components.

Saddle stitchers of this kind were made by the
Brehmer Buchbindereimaschinen GmbH, Leipzig, under the
Type designation ST300 sold. They represent an alternative to saddle stitchers, in which the brochures are transported by means of a continuous conveyor in the form of a gathering chain arrangement up to an output station following a stitching station, and have the advantage with respect to the quality of stapling that the stitching at standstill Brochures are done. However, this advantage must be paid for with a relatively large outlay for changing over when a process-relevant geometric parameter of the brochures is changed, with such a conversion also requiring a considerable amount of mechanical engineering knowledge from the executing personnel.

In this respect, the invention has the object, a saddle stitcher of educate the aforementioned type so that this with the least possible Expenditure can be converted when moving from an order to a follow-up order Process-relevant geometric parameters of the brochures changes.

To solve this problem, the above-mentioned saddle stitcher equipped with a reference component and selected another of the machine components associated sensors, which Phases of the reference component and those of the selected Give signals defining machine components, and with a the Signals processing and on the selected machine components acting control which the phase angles of the selected Machine components such on at least one process relevant The geometric parameters of the brochures match that the brochures in the output station are aligned substantially center-oriented.

As process - relevant geometrical parameters the back length of the Brochures and their thickness into consideration. The said vote of Phase angles of individual machine components on at least one of these Parameter, preferably on a change in the back length of Brochures in case of a change of order is required in this respect usually on said output station a Beschnittstation with a Previous feeder follows the stapled leaflets across previously determined by the continuous conveyor and fingerguard system Feed direction feeds front and side cutters. The Side cutters are symmetrical to the longitudinal center of the mentioned Feeder adjustable and thus require the correct execution of the Cropped section of the foot and a middle-oriented orientation of the Brochures in the feeder preceding dispensing station.

With noticeable thickness differences of the brochures of two different Orders also recommends a corresponding adjustment of the phase position another machine component.

On each affected by the vote of the phasing Machine components will be discussed in more detail later.

The features of the invention are the attached drawings and the Reference is made to the following explanations.

In the figures shows:

Fig. 1: a saddle stitcher for brochures in a simplified representation with investors, a stitching station and a subsequent output station as well as with transport means not shown here in detail, which conveyed by the investors signatures to the stitching station and then to the output station,
Fig. 2: a stitching station comprising the portion of the transport means, comprising a continuous conveyor and a subsequent operatively oscillating Fingerleistensystem with controllable fingers,
Fig. 3: the kinematic interaction of the continuous conveyor and the finger strip system,
Fig. 4: the delivery of brochures of different back lengths from the continuous conveyor to the finger strip system,
Fig. 5: a block diagram for a coordination of the phase positions of selected machine components of the saddle stitcher on a process-relevant geometric parameters of the brochures,
Fig. 6: the influence of the thickness of the brochures on the function of the finger strip system,
Fig. 7: the functional interaction of the continuous conveyor and the finger strip system with different thicknesses of the brochures,
Fig. 8: a brochure taken by the finger strip system in a schematic representation of a section transverse to the transport direction of the brochures and a machine component in the form of a finger actuator for driving the fingers of the finger strip system,
Fig. 9: Details of the finger actuation transmission according to FIG. 8 in a view in the direction of the arrow IX in FIG. 8.

The machine components of the saddle stitcher of FIG. 1 include in present embodiment, three investors 10, 12, 14, each one Signature 16, 18, 20 to a continuous conveyor 34 not shown here in detail to hand over. The signatures 16 stacked and superimposed in this way, 18, 20 together form a brochure 30, which as before the forming Paperback, in a transport direction according to the arrow P along a Transport and stitching line 22 is transported along the investor 10, 12, 14 and beyond a stitching station 24 to an output station 29th extends. The stitching station 24 includes in the present embodiment two stitching heads 26 and a respective thereof assigned, in Fig. 1 not recognizable Umbieger, which by means of stapling heads 26 in the stapled Brochures 30 bent Drahtklammem 27 bend and that the Legs of Drahtklammem 27, which penetrates the brochures 30 to have.

The Umbieger form together with the stitching heads 26 and not shown Devices for producing the wire clamps 27 a Machine component in the form of a stapler.

The dispensing station 29 in the present embodiment comprises a Machine component in the form of a not shown Ejector Sword and Scales 29.1. The ejector sword engages the respective fold break the stapled copies 32, this lifts from the Transport and stitching line 22 and passes them to the Auslegebänder 29.1, by means of which the stapled copies 32 in the direction of arrow T on be transported, and preferably in the direction of a Cutting-device.

From the stitching station 24 upstream with respect to the transport direction According to arrow P, a measuring station 33 is provided, in which the thickness of the stapling brochures 30 is determined.

The continuous conveyor 34 is endless in the present embodiment operationally formed collecting chain formed on which Driver 34.2 are arranged, which in this case astride the Collective chain passed signatures 16, 18, 20 and finally to hefty leaflets 30 in front of him.

Fig. 2 shows a stitching station 24 comprehensive section of the transport and Stapling line 22 again. In this section ends a Transporttrum 34.1 of the designed as a gathering chain continuous conveyor 34 and further transport The leaflet 30 is carried out stepwise by means of an operational oscillating Fingerleistensystems 36. This is in Fig. 2 only shown schematically. It includes an anvil strip 36.1 to Endeavor to booklet brochures 30 and a together with the Anvil bar 36.1 oscillating finger bar 36.2. At the finger bar 36.2 are controllable finger 36.3 arranged. The fingers 36.3 are so far controllable, as they are in the direction of the anvil strip 36.1 and in the opposite direction pivotally hinged to the finger bar 36.2, in Swivel direction is biased on the anvil strip 36.1 and under the Effect of a control bar 36.4 in particular from the anvil bar 36.1 away are pivotable. The fingers 36.3 are at their control bar 36.4 facing ends preferably provided with freely rotatable rollers 36.5, which with an adjustment of the control bar 36.4 in the direction of the finger bar 36.2 or roll in the opposite direction on the control bar 36.4. On the control of the fingers 36.3 and the control bar 36.4 will be later discussed in more detail.

For the oscillating movement of the finger strip system 36, this is to a Coupling coupling of a linkage 38 articulated, which in turn by means of a Crank drive 40 is driven. For operating the crank mechanism 40 and thus for the oscillating movement in the form of the finger strip system 36 trained machine component provided drive means in the present embodiment of a also for actuating the Stapling heads 26 provided stitching machine drive 42 shown (see Fig. 5).

In Fig. 2, the crank mechanism 40 is shown in its extended position, which a Crank angle of 0 degrees is attributed. In this stretched position that will turn Fingerleisteensystem 36 its direction of movement and moves to the Reaching the top layer of the crank mechanism 40 in the arrow 44th indicated direction, in which also the Transporttrum 34.1 of Continuous conveyor 34 moves.

In any case, at said crank angle of 0 degrees and at least up to a certain crank angle - in the present embodiment of 16 degrees - are the anvil bar 36.1 and the finger bar 36.2 one hand and the transport run 34.1 of the continuous conveyor 34 overlaps, so that the Anvil strip 36.1 a positionally appropriate on the Transporttrum 34.1 located Paperback 30 and the fingers 36.3 of the finger bar 36.2 this Pamphlet 30 can press against the anvil strip 36.1. This is done at matching speeds of the finger strip system 36 and the Continuous conveyor 34 - in the present embodiment at a Crank angle of 16 degrees, thus defining a grip point.

As indicated in FIG. 3, the speed v36 of the Fingerleisteensystem 36 at said crank angle of 16 degrees the Speed v34 of Transporttrumes 34.1 of the continuous conveyor 34 reached. This is the predestined operating state for the assumption of a correct position on the continuous conveyor 34 positioned brochure 30 by the Fingerleistensystems 36, by pressing the fingers 36.3 against the Anvil strip 36.1.

As can also be seen from FIG. 3, the speed v36 of the Fingerleistensystems 36 a sine curve-like course and has the present embodiment at a crank angle of 183 degrees their Zero-passage in the top layer of the crank mechanism 40. At this crank angle is now the one for a storage of previously by the finger strip system 36th taken brochure 30 on the transport and stapling line 22 predestined Operating state reached. The zero crossing thus defines one Drop point. The filing is done in particular by lifting the towards on the anvil bar 36.1 biased fingers 36.3 of the Anvil strip 36.1.

After zero crossing of speed v36 of Finger strip system 36 in the top layer of the crank mechanism 40 returns Fingerleisteensystem 36 its direction of movement and finally takes again an overlapping position corresponding to the crank angle 0 degrees with the Transporttrum 34.1 of the continuous conveyor 34, that is the starting point for another cycle of the type described above.

The finger strip system 36 thus transports one from the continuous conveyor 34 inherited brochure step by step with a stride, the one stretch corresponds to the gripping point starting to reach the storage point is covered.

One in a cycle of the finger strip system 36 from the continuous conveyor 34 taken and after a first step on the transport and Stapling line 22 filed brochure 30 is in the subsequent cycle emeut vom Fingergrade system 36 detected and a second time to said Step length transported further. For a respective brochure 30 is repeated This process until after the stapling the output station 29th has reached.

As already mentioned and indicated in Fig. 4, the brochures 30 in the Output station 29 be aligned center-oriented. In the further course becomes Although still apparent that and how the finger strip system 36 with respect to a shift of the storage point can be influenced, the achievable However, magnitude of the shift is for adaptation to a process relevant geometric parameters in the form of the back length of Papers 30 not sufficient.

From the synopsis of Figures 2 and 4 results while maintaining the Phasing of the crank mechanism 40 for a conversion of a format with the Back length L1 on a format with the back length L2 of the brochure 30 the Need for a phase adjustment of the continuous conveyor 34 against the Crankshaft 40, from which further the need for a Phase adjustment of the investors 10, 12, 14 relative to the crank mechanism 40 or relative to the continuous conveyor 34 results.

Namely, the traversed by the finger strip system 36, in Fig. 4 indicated steps with the step size S mentally in reverse Direction, starting from the output station 29 towards the continuous conveyor 34th covered, it becomes clear that with a back length L2 the Leaflets 30 shorter by one delta length L backlash than one Back length L1, the driver 34.2 of the continuous conveyor 34 by half of Back length difference delta L shifted in the transport direction according to arrow 44 Need to become. The phase position of the continuous conveyor 34 must therefore by one half the back length difference Delta L corresponding angle in Transport direction can be adjusted according to arrow 44.

As indicated in Fig. 5, so far selected machine components - Here the continuous conveyor 34 and the investors 10, 12, 14 - and one as Reference component serving machine component in the form of Stapling machine, more precisely that driven by stapler drive 42 Crankshaft 40 sensors 46 associated with which the phase angles of the Reference component and the selected machine components deliver defining signals. These signals are in a controller 48 processed, which on the selected machine components - here the Continuous conveyor 34 and the investors 10, 12, 14 - acts and the phase angles of the selected machine components so on the process-relevant geometric parameters in the form of the back length of example otherwise of the same type of brochures 30, that the brochures 30 in the Output station 29 are aligned center-oriented.

A not only approximate but in fact middle-oriented remaining Alignment at a job change will - as in the course clarified - but achieved without further measures only if only the geometric parameter of the back length changes.

As further indicated in Fig. 5, are in a particularly advantageous manner the selected machine components - here the continuous conveyor 34 and the Feeder 10, 12, 14 - for the action of the controller 48 via Couplings 50 connected to their drive means, wherein the present Embodiment as a drive means for the investors 10, 12, 14 of Stapling machine drive 42 and as a drive means for the continuous conveyor 34 a separate conveyor drive 52 are provided and preferably the Stapling machine drive 42 and the conveyor drive 52 as servo drives are formed.

For sharing the stapler drive 42 for operation the finger strip system 36 via the crank mechanism 40 and the feeder 10, 12, 14 are - as indicated in Fig. 5 - the corresponding Machine components gear 54, 56 upstream. Accordingly can in principle also be moved to the operation of the continuous conveyor 34, that is, as a drive means for this can also be the stapler drive 42nd be used when between this and the continuous conveyor 34, or Preferably, the continuous conveyor 34 upstream clutch 50, a transmission is provided.

Among the clutches 50 are in addition to physically available, such as For example, electromagnetic clutches, logical connections of the Control 48 understood with one of the drive means, as in a preferred embodiment provided in the case of the conveyor drive 52 is.

The controller 48 acts via the clutches 50 on the selected Machine components, in such a way that they each of the disengages selected machine components from their drive means and at correspondingly changed phase position of the respective drive means again individually to these couples.

With only change of the back length as process-relevant Parameter in a job change, the controller 48 causes the coupling the selected machine components, here the investor 10, 12, 14 and the continuous conveyor 34 to the associated drive means - here the Stapling machine drive 42 and the conveyor drive 52 - in such a modified Phases that aligned the brochures 30 centered in the Exit station 29 arrive.

As already mentioned and now with reference to Figures 6 and 7 in conjunction explained with Fig. 2, the thickness of the brochures proves to be another Process-relevant geometric parameters. This results for one Order change, in which both the back length and the thickness of the Brochures 30 change in the event that the to adjust the phase selected machine components only the investors 10, 12, 14 and the Continuous conveyors 34 include that the orientation of the brochures 30 in the Dispensing station only remains substantially centered.

Grasping the brochures 30 by the finger strip system 36 and the Laying the same on the reaching into the delivery station 29 transport and Stapling line 22 is on the recognizable in Fig. 2 control bar 36.4 and a another machine component in the form of a control bar 36.4 actuating finger-operated transmission 58 (see FIGS. 8 and 9). accomplished, which will be discussed in more detail later.

FIG. 6 shows a finger 36.3 of the finger strip system 36 in FIG Interaction with the control bar 36.4 and with brochures different thicknesses in different operating states a, b, c, d in schematic representation of which rolling on the control bar 36.4 Role 36.5 and the suggestion of an articulated connection 36.6 with the Finger bar 36.2 reveals. At a respective one of the earlier explained cycles of the finger strip system 36 performs the control bar 36.4, starting from a first level N1, first a hub with a Stroke length H toward a second level N2 off to one of Papers 30 at the time of agreement of amount and direction of Velocity v36 of finger-grip system 36 at speed v34 the continuous conveyor 34, that is explained in the earlier Gripping point, by means of biased in the direction of the anvil strip 36.1 Finger 36.3 to press the anvil bar 36.1, so from this Gripping point on - in operating state a - the step-by-step transport of the brochure takes place by means of the finger strip system 36. Just before reaching the stride length of the stepwise transport, the control bar leads 36.4 a hub again the stroke length H, starting from the second level N2 on the first Level N1 back out to the progressively transported paperback 30 to a Storage time - in operating state b - release, in which the Speed v36 of the brochure 30 transporting Fingerleisteensystem 36 reaches its zero passage - in the present Embodiment at a crank angle of the finger strip system 36th actuated crank mechanism 40 of 183 degrees (see FIG. 3).

The lift from the second level N2 to the first level N1 leads the Control bar 36.4 against the action of towards the anvil bar 36.1 existing bias of the fingers 36.3 off. The strokes of the Control bar 36.4 these are by means of a cam follower arrangement impressed, which will be discussed in more detail later.

In Fig. 6 is schematically the continuous conveyor 34 with one of its drivers 34.2 is reproduced and with the line D1 is a thin brochure 30 'and with the Line D2 a thick brochure 30 indicated (see also Fig. 7). Of the Operating state a is to be understood as that in which the finger 36.3 under its bias during the stroke of the control bar 36.4 from level N1 to the level N2 in the illustrated gripping point, that is, in agreement of Amount and direction of the speed v34 of the continuous conveyor 34 and the Speed v36 of the finger strip system 36, one by means of the Continuous conveyor 34 zoom brought thick brochure 30 to the anvil bar 36.1 presses. This operating state now remains until the Control bar 36.4 during its stroke from level N2 to level N1 against the bias of the finger reached 36.3 in one in the operating state b Release time in which the speed v36 of the brochure 30 transporting finger strip system 36 has its zero-crossing and then again in the overlapped with the continuous conveyor 34 position returns to start a next cycle.

Are said cam follower assembly and its operation for the Keep the stroke movement of the control bar 36.4 and the above operations with a thin paperback 30 'repeated, the result is a the operating state a corresponding operating state c - brochure clamped - visible to a later date, since with retained stroke of the control bar 36.4 the finger 36.3 reaches the thin booklet 30 'later than the thick one Brochure 30. The operating state d corresponding to the operating state d however, comes earlier, since the finger 36.3 during the Hubs of the control bar 36.4 from level N2 to level N1 can be seen earlier from the thin paperback 30 'stands out as from a thick.

To brochures 30 or 30 'with particularly stringent requirements for their To staple and crop quality, operating conditions a and c at the same time at the beginning of a transport step and the Operating conditions b and d at the same time at the end of this Transport step can be achieved. This would result in addition to a correct Trim also always correct position of the wire clamps 27th

FIG. 7 shows the result of a compromise solution in which It is ensured that brochures 30 and 30 ', ie those different Thick but equal back length only in the output station 29 fact aligned in a center-oriented manner. So it is indeed the thickness-dependent Shift of the gripping point, that is the time interval of Operating conditions a and c - thick brochure 30 in the area of the continuous conveyor 34 clamped and thin brochure 30 'clamped in the region of the continuous conveyor 34 - but accepted by a corresponding thickness-dependent Phase shift of the already mentioned earlier Machine components in the form of the finger actuator 58 for this provided that in the output station 29, the storage of brochures different thickness always in the same place, and indeed centered takes place, wherein, as shown in FIG. 7, the gripping point in Case of the thin brochure 30 'opposite to that in the case of the thick Brochure 30 moves in the transport direction according to arrow 44 and in the Stapling station 24 still different stapling positions of the brochures 30 and 30 ' result.

In the figures 8 and 9 is an embodiment of the Fingerbetätigungsgetriebe reproduced 58, which explained the Strokes of the control bar 36.4 controls. As already mentioned, includes this is a cam follower arrangement. This includes two rotatable with a Drive shaft 60 connected cams.

As shown schematically in Fig. 9, this drive shaft 60 at present embodiment via a gear 54 of the Stapler drive 42 driven. A first control cam 58.1 serves the Control of the clamping of the brochures 30 and 30 'in Fingerguard system 36 and a second control cam 58.2 causes the release the previously clamped in the finger strip system brochures 30 and 30 '. The Phases of the two cams 58.1 and 58.2 are preferred to a average thickness of the brochures 30 and 30 'set. Against the Cams 58.1 and 58.2 are each a curve follower 58.3 and 58.4 employed, each having a pivot arm and a freely rotatably mounted thereto Include curve follower role, which is operatively connected to the respectively associated Cams 58.1 and 58.2 unrolls. The swivel arm of the cam 58.1 employed curve follower 58.4 is in a frame-fixed pivot bearing 58.5 recorded while deviating from the swing arm of the Control cam 58.2 - to control the release of the previously in Fingerleistensystem 36 clamped brochures 30, 30 '- associated Kurvenfolgers 58.3 pivotally received in a bearing plate 58.6, the in turn, with respect to the drive shaft 60 rotatably supported by this.

The respective cam follower 58.3 and 58.4 is with a handlebar 58.7 to a the two cam followers 58.3 and 58.4 common rocker 58.8 articulated, which preferably by means of an elongated bearing sleeve on a for Transport and stitching line 22 parallel tilting shaft 58.9 is mounted and preferred a plurality of arms, which the bearing sleeve with the Connect control bar 36.4. The cam follower 58.3 - whose cam 58.2 for controlling the intermittent storage of the brochures 30, 30 'on the transport and Stapling line 22 and provided for their release in the output station 29 is, as a result of its articulation with respect to the drive shaft 60th rotatable bearing plate 58.6 in the circumferential direction of the cam 58.2 adjustable with respect to this. This is the already explained, of the thickness the brochures 30, 30 'dependent phase adjustment of Fingerbetätigungsgetriebes 58 feasible. For adjustment of the phase position can a hinged to the bearing plate 58.6, lockable pull and Push rod 58.10 are provided.

In a particularly advantageous manner, the adjustment of the phase position for different thicknesses automatically by connection of the Finger Actuator 58 representing machine component to the Control 48, which is designed to also the phase of the Fingerbetätigungsgetriebes 58 to process defining signals and the Phasing of this machine component so on the geometric Parameters of the thickness of the brochures 30, 30 'vote that the Brochures 30, 30 'are center-aligned in the output station 29.

For the delivery of the phase positions of the finger actuation gear 58 defining signals is again associated with the controller 48 Sensor 46 is provided, for example, emits a signal when the Curve follower 58.3 leaves an inner detent track 58.2 'of the control cam 58.2.

To adjust the phase position of the finger actuator 58 come Among other things, a bearing plate 58.6 twisting spindle drive assembly or corresponding gear transmission and a corresponding drive into consideration.

In the example shown in Figures 8 and 9 is a gear transmission provided such that a bearing bush of the bearing plate 58.6 with a Sprocket is provided which meshes with an adjusting pinion 58.1, which by means of an actuated by the controller 48 actuator 58.12 is rotatable.

With the corresponding adjustment of the phase position of the Finger actuation gear 58 depending on the thickness of Brochures 30, 30 'manage their center-oriented storage regardless of the Thickness in the cover layer of the crank mechanism 40.

If, during a job change, process-relevant geometric Change parameters in the form of back length and thickness of the brochures, Thus, the described phase adjustments on both the continuous conveyor 34th and investors 10, 12, 14 as well as the Fingerbetätigungsgetriebe 58 are made, d. H. it's all of these Machine components to assign the said sensors 46, and it is one of whose signals - which phases of these machine components define - to provide processing control 48 which the phase angles of all these machine components so tunes to the two parameters, that the brochures 30, 30 'of the new order centered in the Exit station 29 arrive.

LIST OF REFERENCE NUMBERS

10: investor
12: investor
14: investor
16: signature
18: signature
20: signature
22: Transport and stapling line
24: finisher
26: stapling head
27: wire clamp
29: output station
29.1: delivery belt
30: thick brochure
30 ': thin brochure
32: stapled copy
33: Measuring station
34: Continuous conveyors
34.1: Transporttrum the continuous conveyor 34
34.2: takeaway
36: Finger roll system
36.1: anvil strip
36.2: finger bar
36.3: finger
36.4: control bar
36.5: role
36.6: articulated connection
38: coupling gear
40: crankshaft
42: Staplers drive
44: arrow
46: sensor
48: control
50: clutch
52: conveyor drive
54, 56: transmission
58: Fingering gear
58.1: first cam
58.2: second control curve
58.2: inner detent track of the cam 58.2
58.3: cam follower
58.4: cam follower
58.5: pivot bearing
58.6: bearing plate
58.7: handlebars
58.8: rocker arm
58.9: tilting shaft
58.10: Pull and push rod
58.11: intermediate gear
58.12: actuator
60: drive shaft
a, b, c, d: Operating conditions of a finger 36.3
D1; D2: Thickness of the brochure 30, 30 '
H: Hub of the control bar 36.4
L1, L2: back length
N1: 1. Level of the control bar 36.4
N2: 2. Level of the control bar 36.4
P: Arrow, transport direction
S: increment
T: arrow
v34: Speed of the continuous conveyor 34
v36: Speed of the Finger Strip System 36
Delta L: Back length difference

Claims

Saddle stitcher for brochures, with

an output station,

Machine components, which

a stapler,

a continuous conveyor,

Feeder for feeding the continuous conveyor with signatures,

an operationally oscillating, controllable finger comprehensive finger strip system for the stepwise transport of the brochures

and a finger actuating the finger actuating gear comprise, and with

Drive means for the machine components,

marked by
a further sensor (46) associated with the machine components serving as reference component and outputting signals defining the phase positions of the reference component and the selected machine components, and a controller (48) processing the signals and acting on the selected machine components, which control the phase angles of the selected machine components in such a way agrees with at least one process-relevant geometric parameter of the brochures (30, 30 ') that the brochures (30, 30') in the delivery station (29) are oriented essentially center-oriented.
A saddle stitcher according to claim 1,
characterized in that in the case of tuning the phasing of the selected machine components to the spine length of the booklets (30; 30 '), the selected machine components comprise the continuous conveyor (34) and the feeders (10, 12, 14).
A saddle stitcher according to claim 1,
characterized in that in the case of tuning the phase angles of the selected machine components to the spine length and the thickness of the booklets, the selected machine components include the continuous conveyor (34), the feeders (10, 12, 14) and the finger actuation gear (58).
A saddle stitcher according to claim 1,
characterized. in that the drive means for the selected machine components comprise clutches (50) by means of which each of these machine components can be individually coupled to a drive and that the control (48) is linked to the clutches (50).
A saddle stitcher according to claim 4,
characterized in that the investors (10, 12, 14) can be coupled to a common drive.