DE102006057506A1 - Printing material`s e.g. paper, position e.g. lateral position, correcting method for use in e.g. printing material conveying system, involves relatively moving runners in transport direction, and transporting material by runners - Google Patents

Abstract

The method involves gripping a printing material (102) e.g. paper, with a transport unit (104). Runners (106, 108) are relatively moved in a transport direction. The printing material is transported by the runners. The transport unit is rotated in a lateral position correction angular range for correcting a lateral position of the printing material by the runners. A crossmember (120) is translated in a longitudinal direction. The transport unit is rotated out of the lateral position correction angular range to retain correction of the lateral position of the printing material by the runners. Independent claims are also included for the following: (1) a printing material conveying system comprising an electric linear drive (2) an apparatus comprising an electric linear drive (3) a machine for processing a printing material (4) a sheet-processing rotary printing press for lithographic offset printing (5) a sheet-processing punch comprising an apparatus.

Description

The The present invention relates to a method for correcting the lateral position a printing material according to the preamble of claim 1.

Of Furthermore, the present invention relates to the use of a Bedruckstofffördersystems according to claim 7 and a device for correcting the position of a printing material in the lateral direction according to the preamble of claim 9.

From the prior art transport systems for substrates, eg. B. for printing material, known, which transport the sheets by means of an electric linear drive. In this case, the electric linear drive usually comprises on each side of the machine a primary part, which cooperates in a known manner with trained as runners secondary parts. Such a transport system is z. B. in the DE 103 51 619 A1 described.

It is still known, misaligned bow, which z. In Conveying direction, in the lateral direction or in its angular position from a desired position differ, by means of register adjusting devices in their position to correct.

The DE 44 06 740 A1 describes a device for register correction in a sheet-fed press with motor-displaceably arranged sheet holders, which allows a position correction both in the conveying direction and transversely to the conveying direction of the sheet. As actuators for a sheet holder carrying carriage while z. B. linear motors are used. For oblique-arc correction, ie for correcting the angular position of the sheet, this is, before it is detected by the device, aligned on additional leading brands, ie the oblique sheet correction is not possible with the device for register correction alone and without the additional leading brands. A pivoting of the carriage is not described.

The EP 0 907 515 B1 describes a sheet transport system for a rotary printing machine with trained as runners of an electric linear drive, first and second propulsion elements, which drive sheet holding means having sheet transport devices. The sheet-holding means may be secured to a traverse articulated to the propulsion elements. To set the oblique register of the transported sheet, the propulsion elements are independently controllable and controllable, so that the relative position between the propulsion elements can be changed. Correction of the page register of the sheets is not described.

The DE 102 16 758 A1 describes a method for aligning sheets to the side edge with a laterally, ie movable in the axial direction gripper system in a feed cylinder. To Schrägregisterkorrektur are like the DE 44 06 740 A1 additional front marks provided. A pivoting of the gripper system is not described.

The DE 44 16 564 C2 describes a sheet registration device for skew and page register correction by means of three rollers driven by respective stepper motors and circumferentially segmented. A pivoting of the device is not described.

It An object of the present invention is an improved method to correct the lateral position of a substrate to create.

It is another or alternative object of the present invention, an improved method for correcting the lateral position of a To create printing material, the movement of a transport unit for the Printing material also causes the correction of the lateral position.

It Another object of the present invention is an alternative Use of a substrate conveying system to accomplish.

It Another object of the present invention is an improved one Device for correcting the position as substrate in lateral To create direction.

It is another or alternative object of the present invention, an improved device for correcting the position as substrate to create in the lateral direction, the number of required actuators and the associated costs are kept low.

These Tasks are performed according to the invention a method having the features of claim 1, the use of a printing material conveying system with the markers according to claim 7 and a device with the features of claim 9 solved. Advantageous developments of the invention are in the respective dependent claims contain.

An inventive method for correcting the lateral position of a printing material, wherein a transport unit detects the substrate, is characterized in that the transport unit is rotated in a side position correction angle range, wherein the correction of the side position of the printing substrate is carried out and that the transport unit from this side position correction angle range is turned out, taking the correction of the pages position of the printing material is maintained. Before rotating the transport unit in the side position correction angle range, the transport unit is first turned into the side position correction angle range, if not already done. Compared to the prior art, the correction of the lateral position of the printing material is effected in an advantageous manner by rotating the transport unit. The rotation of the transport unit can preferably be achieved by relatively moving two runners of an electric linear drive, which moves the transport unit in a transport direction. This results in the advantage that the already existing actuators, ie the drive of the transport unit, except for moving the printing material and for correcting its position, in particular the lateral position and circumferential position, can be used.

A advantageous development of the method according to the invention for correction the side position and the angular position of the substrate characterized in that the transport unit in the angular position is brought to the substrate and the substrate detects that the transport unit is rotated in the side position correction angle range, whereby the correction of the lateral position of the printing material takes place, and that the transport unit is rotated from the side position correction angle range while maintaining the correction of the page position of the substrate and the correction of the angular position of the printing material is carried out. That caused by the already existing actuators, each other following rotation of the transport unit in two different angular positions (Angular position of the substrate, angle within the lateral position correction angle range) and back in the starting position allows both advantageously Correction of both the lateral position and the angular position. A correction of the position of the printing material in the transport direction is also possible with the actuators to move the substrate.

A advantageous development of the method is characterized characterized in that the transport unit at the beginning of the procedure is in a direction perpendicular to the transport direction starting position and that the transport unit is from the side position correction angle range is rotated to the starting position.

A advantageous development of the method is characterized in that the transport unit comprises a traverse, which when rotating the transport unit in the side position correction angle range in a first angular direction a translation in the longitudinal direction the traverse performs. Advantageously, according to this Continuing the relative longitudinal movement the actuators in a rotational movement of the transport unit and on in a sideways movement the traverse will be converted.

A advantageous development of the method is characterized in that the transport unit comprises a traverse, which when rotating the transport unit from the side position correction angle range in a second angular direction opposite the first angular direction, longitudinal the traverse is translationally stationary. In an advantageous way according to this Continuing the relative longitudinal movement the actuators converted into a rotational movement of the transport unit be with the crossbar in the lateral direction resting.

A advantageous development of the method is characterized characterized in that the transport unit by a relative movement two runners an electric linear drive of a Bedruckstofffördersystems is turned.

A use according to the invention of a printing material conveying system with an electric linear drive, which is a transport unit for a substrate with two runners and a traverse, is characterized in that the Bedruckstofffördersystem for correcting the lateral position of the printing material by a relative movement the two runners is used. Across from In the prior art, the correction of the lateral position of the Substrate not by a lateral, rectified movement the actuators, but can advantageously by a relative movement be effected in the transport direction of the already existing actuators. The substrate conveying system becomes multifunctional according to the invention used: on the one hand for transport, on the other hand for the lateral position correction.

A advantageous development of the use according to the invention for correction the side position and the angular position of the substrate characterized by the fact that the correction by a relative movement the two runners he follows. According to this Training can be by a relative movement in or against the transport direction the already existing actuators both a correction of the lateral position as well as the angular position of the printing material are effected. The Bedruckstofffördersystem is consequently used multifunctionally: on the one hand for transport - on the other hand to the side and Angle position correction.

An inventive device for correcting the position of a printing substrate in the lateral direction, with an electric linear drive, is characterized in that at least two runners of the electric linear drive essenli chen perpendicular to the lateral direction are movable. Advantageously, contrary to the state of the art, the runners acting as actuators are not moved parallel to the lateral direction but perpendicular thereto, preferably in a transport direction of the linear drive.

A advantageous development of the device according to the invention is characterized characterized by that the runners of the electric linear drive are movable relative to each other.

A Substrate processing machine, in particular a printing machine, a sheet-processing rotary printing machine for lithographic Offset printing or a sheet-processing punch stands out a device as described above with reference to the invention.

The Invention as well as other advantages of the invention will become apparent below with reference to the drawings based on preferred embodiments described in more detail.

The Drawings show:

1 a schematic representation of an embodiment of an apparatus for carrying out the method according to the invention for correcting the lateral position;

2 : a schematic representation of the in 1 embodiment shown in the implementation of the method according to the invention;

3 : a schematic representation of the in 1 embodiment shown in the implementation of the method according to the invention;

4 : a schematic representation of the in 1 embodiment shown in the implementation of the method according to the invention;

5 a schematic representation of an embodiment of an apparatus for carrying out the method according to the invention for correcting the lateral and angular position;

6 : a schematic representation of the in 5 embodiment shown in the implementation of the method according to the invention;

7 : a schematic representation of the in 5 embodiment shown in the implementation of the method according to the invention;

8th : a schematic representation of the in 5 embodiment shown in the implementation of the method according to the invention;

9 : a schematic representation of approached in carrying out the method according to the invention of the transport unit angle ranges.

10 : A schematic representation of an embodiment of an apparatus for carrying out the method according to the invention for correcting the lateral and angular position

11 : a schematic representation of the in 10 embodiment shown in carrying out the method according to the invention

12 : a schematic representation of the in 10 embodiment shown in carrying out the method according to the invention

13 : a schematic representation of the in 10 embodiment shown in carrying out the method according to the invention

In The drawings are the same or corresponding features each provided with the same reference numerals.

1 shows an exemplary embodiment of a device 100 a conveyor system 200 for printing material which for carrying out the method according to the invention for correcting the lateral position of a printing substrate 102 , z. B. a paper or cardboard sheet, can be used. The device 100 includes one in the transport direction 105 (x-direction) movable transport unit 104 (in 1 in their starting position 109 located), which on both sides as a runner 106 . 108 trained secondary parts of a primary parts 112 . 114 comprehensive, electric linear drive 110 having. The transport unit 104 includes a crossbar 120 , which holding elements 122 , z. B. clamping or suction pads, for holding the substrate 102 has, and is about fasteners 124 . 126 articulated with the runners 106 . 108 connected. To compensate for the change in the distance between the two runners from each other, the connecting elements 124 . 126 z. B. displaceable in the traverse 120 arranged so that one runner over the other forward or lag behind and the crosshead can be rotated in this way.

As in 1 shown, is the substrate 102 in the lateral direction 130 (axial or y-direction) by an amount .DELTA.y to the target position 132 offset, so that a page register correction, ie a correction of the page position, must be performed.

1 further shows a recording unit 140 , z. As an optical camera or a sensor system with not Pictured, associated Bildverar processing and evaluation system, which is the actual position 134 of the substrate 102 determined and from a comparison with the predetermined target position 132 Correction values for the necessary register correction determined and sent to a control unit 142 transmitted, which the two runners 106 . 108 of the electric linear drive 110 in their movement controls.

2 shows how the substrate 102 from the transport unit 104 , ie of the holding elements 122 the transport unit 104 , is initially recorded. It can be seen, for. B. by the dashed lines shown center line of the substrate 102 that the printing material 102 concerning the middle between the two runners 106 . 108 towards the runner 106 offset by an amount .DELTA.y arranged by the holding elements 122 is detected.

In 3 is shown as the transport unit 104 and the substrate that it covers 102 by a relative movement of the two runners 106 . 108 by an angle Δβ about an axis 150 perpendicular to the plane of movement of the substrate 102 is turned. When turning the transport unit 104 in an angular range, which is referred to as a lateral position correction angle range β ', the correction of the lateral position of the printing material 102 carried out, ie the traverse 120 moves together with the substrate 102 when rotating in the lateral position correction angle range β 'in the lateral direction on one of the two runners 106 . 108 to. It can be seen that the crossbar 120 in 3 opposite to the illustration in 2 towards the runner 108 is shifted laterally by the correction value Δy.

The representation in 4 shows how the transport unit 104 from the lateral position correction angle range β 'about the axis 150 back in one to the direction of transport 105 of the substrate 102 vertical direction is turned. During this rotation of the transport unit 104 is the previously made correction of the page position of the substrate 102 retained by Δy, so the substrate 102 now regarding the middle between the two runners 106 . 108 is aligned correctly, ie is in the page register.

According to the invention, the correction of the lateral position of the printing material 102 by turning or pivoting the transport unit 104 achieved, the traverse 120 moving in a lateral direction towards a runner. When turning back the transport unit 104 According to the invention, the traverse 120 On the other hand, it does not move in the lateral direction, ie it stands still in the lateral direction. In this way, the device for carrying out the method according to the invention advantageously requires only the two runners which are present anyway for transporting the printing stock 106 . 108 of the electric linear drive 110 as actors. On additional actuators, which would be provided only for the lateral orientation, can thus be dispensed with in an advantageous manner.

5 shows an exemplary embodiment of a device 100 a conveyor system 200 for printing material, eg. B. in a printing press, in its starting position 109 , which for carrying out the method according to the invention for correcting the lateral position and the angular position of a printing material 102 can be used. The device 100 corresponds in its structure to the in 1 illustrated device. The substrate 102 is in the lateral direction 130 (axial or y-direction) by an amount Δy and in the angular direction 129 (Oblique or φ-direction) by an angle amount Δφ with respect to the desired position 132 staggered. In addition, the substrate is 102 also in the direction of movement 131 (Longitudinal or x-direction) arranged offset by an amount .DELTA.x. A correction of the position of the printing material 102 in the direction of movement 131 is with the in 1 and in 5 illustrated device in a simple manner by a simultaneous process of the runners 106 . 108 in or against the direction of movement 131 possible.

In addition to correcting the position of the substrate 102 in the direction of movement 131 , ie for the so-called circumferential registration correction, thus a page register correction and a correction of the angular position, ie a so-called oblique arc correction, is required. This is the actual position 134 of the bow 102 using the recording unit 140 determined and as in the in 1 shown example from a comparison with a desired position 132 Correction values are determined for the necessary register corrections and the control unit 142 to control the movement of the two runners 106 . 108 made available.

6 shows how the transport unit 104 and thus the traverse 120 first by a relative movement of the two runners 106 . 108 to each other by a correction angle Δφ in the angular position of the printing material 102 is rotated and how the retaining elements 122 the substrate 102 in the angular position. When capturing the substrate 102 are the traverse 120 and the substrate 102 , ie its leading edge, thus aligned substantially parallel.

The on the recording of the printing material 102 the following process step is in 7 shown. By a further relative movement of the two runners 106 . 108 each other becomes the transport unit 104 and the substrate that it covers 102 by an angle Δβ about the axis 150 is rotated in the side position correction angle range β '(Δβ becomes thereby starting from the position of the traverse 120 in the in 6 determined position determined). This will be the Traverse 120 and the substrate 102 moves in the lateral direction y by Δy and thus corrects the page register.

After the page register correction, as in 8th shown the transport unit 104 back to the transport direction 105 of the substrate 102 vertical position turned (starting position 109 ), wherein the correction of the lateral position of the printing substrate 102 is maintained and the correction of the angular position takes place.

According to the invention, the correction of the lateral position and the angular position of the printing material 102 by turning or pivoting the transport unit 104 achieved, the traverse 120 moving in a lateral direction towards a runner. When turning back the transport unit 104 According to the invention, the traverse 120 On the other hand, it does not move in the lateral direction, ie it stands still in the lateral direction. In this way, the device for carrying out the method according to the invention advantageously requires only the two runners which are present anyway for transporting the printing stock 106 . 108 of the electric linear drive 110 as actors. On additional actuators, which would be provided only for the lateral orientation, can thus be dispensed with in an advantageous manner.

In 9 are shown schematically the correction angle ranges α ', α''andβ', β '', in which the transport unit 104 can be turned. An angular position correction angle Δα for the oblique arc correction is thus, depending on the sign of the correction angle Δφ, in the angular position correction angle range α 'or α ". A page position correction angle Δβ for the page register correction is thus, depending on the sign of the correction value Δy, in the lateral position correction angle range β 'or β ".

Will the transport unit 104 by an angle 0 <| φ | <| α '| or 0 <| φ | <| α '' | rotated, so only the angular position of the transport unit 104 and the traverse 120 , but not the side position of the traverse 120 changed.

Will the transport unit 104 by an angle | α '| <| φ | <| β '| or | α '' | <| φ | <| β '' | rotated, so is after sweeping the limit angle α 'or α''a lateral movement of the traverse 120 and thus initiated a page register correction, ie the angular movement is in a translational lateral movement of the crosshead 120 implemented. At an angle φ = β 'or φ = β''can also be provided a mechanical stop to prevent further rotation.

When turning back the transport unit 104 and the traverse 120 the previously set page register correction is retained.

The page register correction can be carried out such that the printing material of the device according to the invention depending on the lateral offset (left or right) of the printing material in the direction of the rotor 106 or to the runner 108 is moved. In this case, an adjustment movement of the traverse is provided in the angular position correction angle ranges β 'and β ". But it can also be provided that the substrate always only in the direction of one of the two runners 106 or 108 is moved. In this case, an adjustment movement of the traverse in one of the angular position correction angle ranges β 'or β "is sufficient, provided that the traverse is in an off-center side position at the beginning of the process.

The implementation of the rotational movement of the transport unit 104 in a translational movement of the traverse 120 can z. B. over a suitably trained, coupled with the runners and the traverse gear can be achieved.

In the 10 shown device 100 includes one in the transport direction 105 movable transport unit 104 which run on both sides as a runner 106 . 108 having formed secondary parts. The transport unit 104 includes a crossbar 120 , which holding elements 122 , For example, clamping or suction pads, for holding the printing material has and is via a hinge with the connecting elements 124 . 126 connected. The degree of freedom of the rotary joint is located exclusively in the XY plane. To compensate for the change in the distance of the traverse 120 to the runners 106 . 108 are the fasteners 124 . 126 movable in the runners 106 . 108 arranged so that one runner over the other forward or lag behind and the crosshead can be rotated in this way. The connecting elements 124 . 126 be by means of a clamping force in the runners 106 . 108 held in position, leaving the traverse 120 remains in exact position while driving.

For the in 11 shown correction of the angular position, ie a so-called oblique arc correction, a substrate is a defined distance between pressure rollers 160 . 161 the traverse 120 and support elements 170 . 171 the runner 106 . 108 intended. This is a twist of the traverse 120 up to a touch, for example, the pressure roller 160 to the associated support element 170 possible. The twist is by means of forward or lag the runner 106 . 108 realized.

At the in 12 shown correction of the lateral position of the printing material is caused by the relative movement of one of the two runners, eg 106 , the traverse 120 twisted. Is now eg the pressure roller 160 on the support element 170 of the runner 106 and the runner 106 moves further in the direction of movement, the angle of rotation of the traverse increases 120 , The introduced force in the pressure roller 160 must be greater than the clamping force of the connecting element 124 be. If this is the case, the connecting element shifts 124 and thus sets a shifted lateral position of the traverse.

Through the in 13 shown lagging the runner 108 becomes the traverse 120 brought back to its angle-side zero position. Due to the clamping force and no further introduction of forces, the traverse 120 kept in their displaced position.

From the 10 to 13 it can be seen that the lateral distance y2 between Traverse 120 and runners 106 is greater than the lateral distance y1 before the correction process and thus that a lateral displacement has taken place.

100

contraption

102

substrate

104

transport unit

105

transport direction

106 108

Runners / secondary section

109

starting position

110

electrical linear actuator

112 114

primary part

120

traverse

122

retaining element

124 126

connecting element

129

angularly

130

lateral direction

131

movement direction

132

Nominal position

134

Actual position

140

recording unit

142

control unit

150

axis

160 161

capstan

170 171

support element

200

conveyor system

x, y

direction

y1, y2

distance in the lateral direction

Δy, Δx

correction value

φ

angularly

Δφ

correction angle

Δα, Δβ

angle

α ', α' '

Angle position correction angle range

β ', β' '

Lateral position correction angular range

Claims (11)

Method for correcting the lateral position of a printing material, wherein - a transport unit ( 104 ) the printing substrate ( 102 ), characterized in that - the transport unit ( 104 ) is rotated in a lateral position correction angle range (β '), the correction of the lateral position (y) of the printing material ( 102 ) he follows, and - that the transport unit ( 104 ) is rotated from the side position correction angle range (β '), wherein the correction of the lateral position (y) of the printing material ( 102 ) is maintained. Method for correcting the lateral position and the angular position of the printing stock according to claim 1, characterized in that - the transport unit ( 104 ) in the angular position (φ) of the printing substrate ( 102 ) and the printing substrate ( 102 ), - that the transport unit ( 104 ) is rotated in the side position correction angle range (β '), wherein the correction of the lateral position (y) of the printing material ( 102 ), and - that the transport unit ( 104 ) is rotated from the side position correction angle range (β '), wherein the correction of the lateral position (y) of the printing material ( 102 ) and the correction of the angular position (φ) of the printing substrate ( 102 ) he follows. Device according to claim 1, characterized in that - the transport unit ( 104 ) at the beginning of the process in a transport direction ( 105 ) substantially vertical starting position ( 109 ) and that - the transport unit ( 104 ) from the side position correction angle range (β ') to the home position (FIG. 109 ) is rotated. Method according to claim 1, characterized in that - the transport unit ( 104 ) a traverse ( 120 ), which when turning the transport unit ( 104 ) in the side position correction angle range (β ') in a first angular direction, a translation in the longitudinal direction of the traverse ( 120 ). Method according to claim 1, characterized in that - the transport unit ( 104 ) a traverse ( 120 ), which when turning the transport unit ( 104 ) from the lateral position correction angle range (β ') in a second, opposite to the first angular direction angular direction in the longitudinal direction of the traverse ( 120 ) translationally stands still. Method according to claim 1, characterized in that - the transport unit ( 104 ) by a relative movement of two runners ( 106 . 108 ) of an electric linear drive ( 110 ) of a printing material conveying system ( 200 ) is rotated. Use of a printing material conveying system with an electric linear drive, which has a transport unit ( 104 ) for a substrate ( 102 ) with two runners ( 106 . 108 ) and a traverse ( 120 ) for correcting the lateral position (y) of the printing substrate ( 102 ) by a relative movement of the two runners ( 106 . 108 ). Use of a printing material conveying system according to claim 7, for correcting the lateral position (y) and the angular position (φ) of the printing substrate ( 102 ) by a relative movement of the two runners ( 106 . 108 ). Device for correcting the position of a printing material in the lateral direction, with an electric linear drive ( 110 ), characterized in that at least two runners ( 106 . 108 ) of the electric linear drive ( 110 ) are movable substantially perpendicular to the lateral direction (y). Device according to claim 9, characterized in that the runners ( 106 . 108 ) of the electric linear drive ( 110 ) are movable relative to each other. Substrate processing machine, in particular Printing machine, sheet-fed rotary printing machine for lithographic Offset printing or a sheet-processing punch, marked by a device according to claim 9.