JP4130513B2 - Feeding device provided in sheet-fed rotary printing press - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a feeding device provided in a sheet-fed rotary printing press according to the premise of claim 1.
[0002]
[Prior art]
A similar delivery device is known from DE 24 30 212 A1. This delivery device has a sorting device that selectively lowers the printed material into two delivery piles. The substrate is subjected to quality control by measurement technology inside the printing press for separation. The substrate is conveyed to the first delivery device by the circulating first chain conveying device. The first feeding device is provided with a paper take-up drum having a holding mechanism, and a second chain conveying device is provided behind the paper take-up drum. The substrate is lowered to the first or second delivery pile depending on the detected quality.
[0003]
From German patent document DE-OS 22 01 217, a sheet feeding device by a unit method for a printing press is well known, and in this device, a substrate is selectively supplied to a normal feeding device or a special feeding device. Is done. This delivery device comprises a substructure unit, a superstructure unit to be stacked and / or a special delivery unit. This special delivery unit has a separate annular chain and a paper cradle suitably provided above the pile area of the superstructure unit. In a further configuration, the delivery pile is provided inside a circulating chain mechanism. In that case, for safety reasons, the sheet is taken out only after the machine has stopped. This unit is provided with a transparent covering so that the upper pile provided in the special delivery unit can be observed. The disadvantage of this device is that the machine must be stopped to remove the sheet from the special delivery unit.
[0004]
A further delivery device for a sheet-fed rotary printing press is known from DE 43 22 324 A1. This device has a unit type structure, for example, a drying device section inside the delivery device is provided as a unit. The feeding device is further provided with a substrate switching device, which is provided as a unit behind the last chain gear in the transport direction of the sheet transport mechanism. The printing waste paper and the test printing paper are separately fed out of the main pile by driving the substrate switching device.
The disadvantage of this device is that the length of the printing press inevitably increases due to the substrate switching device and the pile provided behind the sheet transport mechanism.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a sheet-fed rotary printing press that avoids the disadvantages as described above, and that improves paper take-out particularly in the area of the circulating sheet-feeding mechanism and increases the stability of the feed-out process. It is providing the delivery apparatus provided in.
[0006]
[Means for Solving the Problems]
Such a problem is solved by the constituent elements described in the main claim. Further formation is described in the subclaims.
The advantage of the solution according to the invention is that the printing waste or test paper is lowered into a separate pile (pile system) without interfering with the printing process. This improves the stability of the delivery process. Furthermore, this separate pile can also be used as an auxiliary pile device. A further advantage is that, for example, when a new printing job is received, the printing waste generated at the start of operation can be immediately lowered to a separate pile. Since the test printing paper (or printing waste paper) is lowered to a separate pile of the pile system at any time, the sheet is continuously lowered to the main pile (first or second feeding pile). The operator will not intervene. It is also advantageous that the safety in operating the sheet transport mechanism circulating by the operator is improved. It is also advantageous to form the delivery device in unit form. As a result, a configuration that is advantageous in terms of cost and can be equipped later is possible, and the feeding device can be used generally in a sheet-fed rotary printing press.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The embodiment of the present invention will be described in more detail with reference to FIGS. The figure shows the following.
1 shows a delivery device with a first delivery pile and a paper removal unit;
FIG. 2 shows a delivery device with first and second delivery piles and a paper removal unit;
Figure 3 is a diagram of the paper removal unit;
FIG. 4 is a view showing sheet guidance in the paper removal unit.
[0008]
The printing apparatus 1 in a sheet-fed rotary printing machine, which can also be formed as a processing unit such as a coating unit or other further processing station, but is fed backward in the transport direction with respect to such an apparatus. Is provided. In this case, the printing apparatus 1 comprises a rubber blanket cylinder 2 (this cylinder corresponds to a plate cylinder in the coating unit) and an impression cylinder 4. The inking device and possibly the dampening device will not be described in detail here. The rubber blanket cylinder 2 is functionally connected to the impression cylinder 4 and is provided with a conveyance cylinder 3 for conveying the sheet in front of the impression cylinder 4 in the conveyance direction. If the diameter of the rubber blanket cylinder 2 is 1, the impression cylinder 4 and the transfer cylinder 3 each have a double diameter and two holding bridges.
[0009]
In particular, the feeding device comprises an endless circulating sheet transporting mechanism 5 having a plurality of holding mechanisms 25, and this sheet transporting mechanism 5 has a first sheet guide device 28 which is preferably pressurized. It is suitably configured as a chain transport device. On the outside of the lower belt portion of the sheet transport mechanism 5, there is a cavity 30 that extends over the width of the paper with a slight distance from the sheet transport mechanism 5. 28 is provided inside. In the cavity 30 region of the lower belt portion of the sheet transport mechanism 5, a drum 11 for guiding the sheet is provided below. The drum 11 has at least one holding bridge 26, and the working area of the holding bridge intersects the cavity 30. A pile mechanism 10 is provided below the drum 11 behind the drum for lowering the sheet.
[0010]
The sheet transport mechanism 5 extends beyond the first delivery pile 9 that functions as the main pile. A sheet guide drum 11 is provided in the sheet transport mechanism 5 in front of the first delivery pile 9 in the transport direction. The drum 11 has a double size when the size of the rubber blanket cylinder 2 is 1, and is formed as a drum 11 having two holding bridges 26 arranged symmetrically on the circumference. The drum 11 can be configured to have a diameter of 1 × and a single holding bridge, but has a diameter of 3 × or more and a suitable number symmetrically about the circumference. It is also possible to arrange the bridge 26 so that it can be configured.
[0011]
The drum 11 functions as a switching device for selectively taking out sheets from the circulating sheet transport mechanism 5. For this purpose, the drum 11 is preferably arranged in a horizontally provided part of the sheet transport mechanism 5, and the sheet guided by the drum 11 is lowered to the pile system 10 there. In the simplest form, the pile system 10 is a paper stack or a lattice box for receiving printing waste paper. In the case of further forming, at least stopper means and a paper aligning device are provided in order to form the edges accurately.
[0012]
The first sheet guide device 28 is formed from two parts in the cavity 30 region. The sheet guide device 28 (first portion) provided forward in the sheet conveying direction has a protrusion 33 provided in a comb shape (that is, in a comb shape) with a gap between itself . Similarly, the sheet guide device 28 (second portion) provided on the rear side has a protrusion 33 provided in a comb shape with a gap between itself . Since the protrusions 33 of the two parts of the sheet guide device 28 are provided facing each other, the gap (between the protrusions 33) is integrated into the cavity 30.
[0013]
In such a configuration, the gripping claw of the gripping bridge 26 has a working area 31 when the gripping device penetrates the sheet guide device 28 while the drum 11 rotates in the transport direction 32, particularly when receiving a sheet. It intersects with the gap of the sheet guide device 28 consisting of two parts.
[0014]
In a further preferred configuration, a portion (second portion) of the sheet guide device 28 provided at the rear of the drum 11 has a sheet guide member 29 provided at the front, and this sheet guide member. Is provided across the width of the paper. In such a configuration, the sheet guide member 29 has a protrusion 33 with a gap (integrated in the cavity 30). The sheet guide member 29 is rotatably supported on both sides by a rotary joint 27 fixed to the gantry. During continuous printing, the sheet guide member 29 is horizontally incorporated into a first sheet guide device 28 comprising two parts. When it is necessary to supply the sheet to the pile mechanism 10, the sheet guide member 29 is rotated from the horizontal position to the position 29 '(FIG. 4) and moved in a curvilinear manner to the second sheet guide. It is aligned with the device 20 and assists in the sheet being guided on the drum 11.
[0015]
In a further preferred configuration, the first sheet guide device 28 placed in a horizontal position during continuous printing is formed as a substantially closed sheet guide, for example in unit form. In the cavity 30 region, the circumferential surface of the drum 11 has at least a number of circulating recesses and holding bridges 26 in which the projections 33 of the first part of the first sheet guide device 28 are provided on the circumferential surface of the drum 11. The first sheet guide device 28 is incorporated by projecting into a gap area provided between the mouths. In a simple configuration, these indentations are formed as circulating grooves provided at a distance across the width of the paper, and these distances are approximately equal to the arrangement of the air gaps in the sheet guide device 28.
[0016]
In a further configuration for continuous printing operation, the protruding portion 33 of the sheet guide member 29 also protrudes into the recess of the circumferential surface of the drum 11.
[0017]
The formation of the drum 11 is not limited to a cylindrical circumferential surface. Alternatively, the drum 11 can also be formed by a holding bridge 26 provided symmetrically on the circumference, and these holding bridges are supported on the drum shaft. These supports are preferably made substantially in the form of a secant with respect to the circumference of the drum. In such a formation, the indentation corresponds to a void area provided between the holdings where the holding bridge 26 is disposed. The protruding portion 33 protrudes into these gap regions.
[0018]
In the region of the sheet transport mechanism 5 above the drum 11, for example, a control device 24 such as a rotatable radial cam is provided. The control device 24 activates the holding mechanism 25 that circulates the sheet transport mechanism 5 when necessary, and the holding mechanism 25 is always correlated with the holding bridge 26 of the drum 11. The holding bridge 26, which is correlated with the holding mechanism 25, is also actuated by a pivotable radial cam. For this purpose, an actuating device is provided, for example an actuating cylinder actuated by air pressure, which actuates the radial cam and the retaining bridge 26 of the gripping mechanism 25 and simultaneously the sheet guide member 29 via a connecting gear device.
[0019]
When the sheet is discharged, a second sheet guide device 20 adjacent to the drum 11 with a distance is disposed. The second sheet guide device 20 extends to the pile mechanism 10. An air supply device 21 is suitably provided between the drum 11 and the pile mechanism 10. The second sheet guide device 20 is preferably pressurized by air pressure, for example by air supply.
[0020]
A third sheet guide device 22 is provided opposite to the second sheet guide device 20, and the third sheet guide device is provided between the drum 11 and the pile mechanism 10. The third sheet guide device 22 is preferably pneumatically applied using an air supply / intake mechanism 23.
[0021]
At least the drum 11 and the pile mechanism 10 form a paper removal unit 7. The delivery device is formed of at least a first delivery unit 6 provided in front of the paper removal unit 7 in the transport direction, a paper delivery unit 7 and a second delivery unit 8 provided at the rear.
[0022]
In a further preferred configuration, the paper take-up unit 7 comprises a part of the sheet transport mechanism 5 having a chain transport web and a control device 24.
[0023]
The paper take-up unit 7 preferably has a paper stacking surface 15 for the first feed unit 6 provided at the front and a paper stacking surface 16 for the second feed unit 8 provided at the rear in the side frame region.
[0024]
In a further preferred configuration, the second delivery unit 8 is supported against the ground by the A column 12 and the B column 13, the paper take-up unit 7 is supported at least by the B post 13, and the first feed unit 6 is preferably a paper take-up unit. 7 is supported by the paper stacking surface 15.
[0025]
In the configuration of the delivery device having the first delivery pile 9 and the second delivery pile 17, an intermediate unit 18 having a part of the sheet transport mechanism 5 is provided between the first delivery unit 6 and the paper take-out unit 7. It has been. By configuring the delivery device in a unit type, the intermediate unit 18 can be formed as a drying device section. The embodiment is not limited to the configuration shown in FIG. Alternatively, the paper take-up unit 7 can also be provided in front of the intermediate unit 18 (with the dryer section and / or the second delivery pile 17) in the transport direction.
[0026]
The intermediate unit 18 is supported with respect to the ground by the C column 14 provided forward in the transport direction together with the paper stacking surface 19, and the first delivery unit 6 is also supported by the C column 14 at the same time. In a preferred further formation, the intermediate unit 18 is supported on the paper stacking surface 15 of the paper take-up unit 7.
[0027]
The method of operation is as follows. The sheet fed from the printing apparatus 1 provided in the front is received by the holding mechanism 25 of the sheet transport mechanism 5 and guided by the first sheet guide device 28 in the first delivery unit 6 in the transport direction. . The first delivery unit 6 may be provided with a drying device section and / or a powder device.
[0028]
In the delivery device having the main pile shown in FIG. 1, the sheet guided by the holding mechanism 25 passes through the paper take-out unit 7 and the second delivery unit 8 during the continuous printing operation, and the sheet braking device It is decelerated, supplied to the first delivery pile 9 and lowered to this first delivery pile.
[0029]
When printing waste occurs, when a trial print must be taken out, or when non-stop pile replacement must be performed, the control device 24 is activated, and the sheet is cam-controlled from the holding mechanism 25. It is handed over relative to the holding bridge 26 of the drum 11. Therefore, the sheet guide member 29 is simultaneously rotated from the horizontal position about the axis of the rotary joint 27, and the sheet is guided on the drum 11 by the second sheet guide device 20, and the cavity In the 30 region, the gap for deriving the sheet increases.
[0030]
The drivable drum 11 guides the sheet and passes it through the second sheet guide device 20, the holding bridge 26 releases the sheet, and the sheet is lowered to the pile mechanism 10. The lowering of the sheet is supported by a third sheet guide device 22, which is preferably pneumatically applied.
[0031]
In the delivery device having two main piles shown in FIG. 2, during continuous printing operation, the sheet guided by the holding mechanism 25 passes through the first delivery unit 6 and selectively passes through the intermediate unit 18. The first delivery pile 9 or the second delivery pile 17 is supplied to the corresponding delivery pile 9 or 17 while being decelerated in the sheet braking device, and is lowered to these piles.
[0032]
In the case of non-stop pile replacement, in the formation according to FIG. 1, during the continuous printing operation, the sheet is fed out of the entire feed pile 9 and supplied to the pile mechanism 10 until it is replaced with a new pile.
[0033]
In the arrangement according to FIG. 2, the lowering of the sheet is switched only between the first and second delivery piles, so that the pile 9 or 17 can always be exchanged.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a delivery device including a first delivery pile and a paper removal unit.
FIG. 2 is a schematic configuration diagram of a delivery device including first and second delivery piles and a paper removal unit.
FIG. 3 is a schematic configuration diagram of a paper removal unit.
FIG. 4 is an enlarged view of a main part showing sheet guidance in the paper removal unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Printing apparatus 2 Rubber | gum blanket cylinder 3 Conveyance cylinder 4 Impression cylinder 5 Sheet | seat conveyance mechanism 6 1st delivery unit 7 Paper taking unit 8 2nd delivery unit 9 1st delivery pile 10 Pile mechanism 11 Drum 12 A pillar 13 B pillar 14 C pillar 15 Paper stacking surface 16 Paper stacking surface 17 Second delivery pile 18 Intermediate unit 19 Paper stacking surface 20 Second sheet guide device 21 Air supply device 22 Third sheet guide device 23 Air supply / intake mechanism 24 Control Device 25 Holding mechanism 26 Holding bridge 27 Rotating joint 28 First sheet guide device 29 Sheet guide member 30 Cavity 31 Working region 32 Transport direction

Claims (12)

A sheet transport mechanism that circulates endlessly and supplies the printed sheet to the first delivery pile;
A drum with a holding bridge that functions as a switching device in front of this first delivery pile in the transport direction to selectively take out the sheets;
Control and control device (24), the delivery device provided in the sheet-fed rotary printing machine having a
The drum is disposed adjacent to a lower belt portion of the sheet transport mechanism;
A first sheet guide device having a cavity (30) extending over the width of the paper at a slight distance from the sheet transport mechanism (5) outside the lower belt portion. (28) is provided,
The drum (11) has at least one holding bridge (26) having a working area (31) intersecting the cavity (30);
The sheet is lowered to a pile mechanism (10) provided on the lower rear side of the drum (11),
The control device (24) is provided above the drum (11), and the control device (24) drives a holding mechanism (25) that circulates the sheet transport mechanism (5), so that the holding mechanism (25 ) Is correlated with one of the holding bridges (26) of the drum (11),
The first sheet guide device (28) comprises a first part provided forward in the transport direction, a second part provided rearward, and a cavity part (30) provided therebetween,
First portion of the first leaf paper guide device (28) is provided between the projecting portion provided on the comb-like (33) and the projecting portion (33), incorporated into said cavity (30) have a gap,
The drum (11) has recesses that circulate circumferentially, and at least the protrusion (33) of the first portion of the first sheet guide device (28) protrudes into these recesses. A feeding device provided in a featured sheet-fed rotary printing press.   The drum (11) is provided with a second sheet guide device (20) adjacent to the drum (11) at a predetermined distance when discharging the sheet, and the second sheet guide device is arranged in the pile mechanism ( 10. The delivery device according to claim 1, which extends to 10).   The delivery device according to claim 1, wherein an air supply device (21) is provided between the drum (11) and the pile mechanism (10).   A third sheet guide device (22) is provided to face the second sheet guide device (20), and the third sheet guide device includes the drum (11) and the pile device (10). The delivery device according to claim 2, wherein the delivery device extends between the two. At least the drum (11) and the pile mechanism (10) are provided in the paper removal unit (7),
The said feeding device is formed of at least a first feeding unit (6) provided in front of the paper removal unit (7) and a second feeding unit (8) provided in the rear. The delivery device described in 1. The paper removal unit (7)
A support surface (15) for the first delivery unit (6) provided forward;
Dispensing apparatus according to claim 5 supporting surface (16), characterized in that a for the second feeding unit provided on the rear (8). The second delivery unit (8) is supported by the A column (12) and the B column (13),
The paper take-up unit (7) is supported by at least the B pillar (13);
The delivery device according to claim 6 , wherein the first delivery unit (6) is supported by the support surface (15) of the paper removal unit (7). The delivery device is provided between the first delivery unit (6) and the paper removal unit (7), has a part of the sheet transport mechanism (5), and has a second delivery pile (17). The delivery device according to claim 5 , characterized in that it comprises an intermediate unit (18) in which is provided. The intermediate unit (18) having a support surface (19) is supported by a C column (14) provided forward in the transport direction,
9. The delivery device according to claim 8 , wherein the first delivery unit (6) is supported by the C pillar (14) at the same time. 9. The feeding device according to claim 8 , wherein the intermediate unit (18) is supported by the support surface (15) of the paper removal unit (7).   The second portion of the first sheet guide device (28) is forward of the sheet conveyance direction with a rotary joint (27) extending over the width of the sheet and fixed to the frame. 2. The feeding device according to claim 1, further comprising a sheet guide member (29) rotatably supported. 12. The feeding device according to claim 11 , wherein the sheet guide member (29) has a plurality of comb-shaped protrusions (33).

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