JP2002019075A - Sheet-fed rotary press for multicolor printing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability, sheet guiding, a size of a structure and a connection to logistics. SOLUTION: A sheet-fed rotary press for multicolor printing comprises a sheet conveying means for conveying a printing sheet in a direction of a printing process and in its opposite direction. The rotary press comprises the conveying means having an endless conveyor system to return the sheet. The conveyor system returns the sheet to a side of a sheet feeder at an upper side of the press, and delivers the sheet to a sheet delivery unit mounted in parallel with the feeder. The feeder is coupled to the delivery unit via a pipe conveying system. The press can satisfactorily access compactly and particularly satisfactorily operable by the logistics.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-fed rotary printing press for multicolor printing according to the preamble of claim 1.

[0002]

2. Description of the Related Art In sheet-fed rotary printing presses for multicolor printing, there is an important problem in that printed sheets are transported through all printing device units from a paper feeder to a paper discharger. In a conventional sheet-fed rotary printing press, the individual printing device units are connected to one another by a sheet transport drum.
This has the disadvantage that the printed sheets are always guided more or less rigidly. However, it has already been proposed to provide a chain conveyor system through the sheet-fed rotary printing press. In this case, the printed sheets are received on a gripper carriage in front of the first first printing device unit, which grippers hold immovably on the gripper closure until the sheets are passed on to the delivery system.

[0003]

SUMMARY OF THE INVENTION German Patent No. 39363
No. 45 describes a sheet-fed printing press for multicolor printing. The printing press has a plurality of sequentially rearwardly located printing device units, which are linked together by an endless chain conveyor system.
The gripper bogies of the chain conveyor system are each guided in a wave form along the surface of the double-diameter impression cylinder, and are thus sequentially passed through the printing zones of all the printing device units and further down the first press under the printing press. It is returned to one printing apparatus unit. Printed sheets are passed from the feeder via the front gripper system to the feed drum and from there to the gripper carriage when the gripper carriage is just on the first first impression cylinder. At the end of printing with the last ink, the sheet is guided to the delivery system and delivered there. In this case, the printed sheets undergo a gripper change only to be passed on to the gripper carriage and to the delivery system, but this gripper change does not have any effect on the registration accuracy of the print.

This type of construction has the disadvantage that the printing press is extended over very long sections and requires special preparation for its operation. The printing sheet must be conveyed downward from the level of the paper feeder into the range of the printing unit and further upwardly from this lower side to the level of the paper discharge device. For this reason, a relatively large height difference must be overcome. This requires a transition which takes up considerable space during the sheet guidance. Therefore, the overall configuration is irrational. In addition, over the entire length of the printing press, depending on the number of inks, a greater or lesser number of gripper trucks are not used when returning from the delivery system to the feeder. Furthermore, access to the printing unit is relatively difficult.

[0005] In order to reduce the structural length of the printing press,
It has been proposed to arrange the paper feeder and the paper output device on one side of the printing press. DE PS 933 927 describes a sheet-fed printing press with a delivery chain. This publication relates to a sheet-fed intaglio printing press for one-color printing. Here, in order to improve operability, a paper discharge device is arranged side by side with the paper feed device. The chain conveyor system to the output device is therefore guided in this case in a relatively large arc upwardly beyond the working height of the printing device unit and parallel to the feed table to the output device sheet stack. ing. In this case, at the same time, the printed sheets are turned by the corresponding guidance of the chain conveyor system, so that the printed sheets are placed on the delivery stack with the printed side up. In this manner, the printing unit can be freely accessed from both sides until the sheet is reached, and the operating plane is not increased by a delivery system which is possibly guided along the floor.
This publication does not give any suggestion for such an arrangement in a multicolor printing press. The arrangement described here would not be feasible in a multi-color printing machine and would also be pointless.

[0006] Finally, EP-A-0085751 describes an offset-sheet-fed rotary printing press. A compact construction is achieved here by the printing units being arranged alternately upright and upside down on printing cylinders arranged along horizontal zigzag lines. It is relatively difficult to access the printing device unit of this printing press. Nevertheless, this printing press is still quite long, in which case the adjacent device units, namely the feeder and the output device, require more and more space.

[0007] The object of the invention is therefore to have a reduced structural length and to be able to be used flexibly, with improved sheet guidance, operability and logistic connection.
It is an object of the present invention to provide a sheet-fed rotary printing press according to the preamble of claim 1.

[0008]

This object is achieved by means having the features of claim 1. In this case, it is clear that the individual printing unit can be operated satisfactorily by being freely accessible. Furthermore, each sheet is conveyed on substantially one plane, in which case it is not necessary to convey the sheet from the sheet feeder to the discharger via a large height difference. In addition, a long free section is obtained in the return path on the upper side of the printing unit, which can be used for drying. The operability of the printing press is also improved as a whole by the fact that both stackers are located on one side of the printing press, and thus the logistics, i.e. the loading and unloading of the sheet pile, is integrated in the printing plant. ing. Finally, there is also proposed a configuration for using other printing methods in special printing units other than offset printing, in which case any necessary post-processing can be performed in the return transport range. This achieves a particularly rational configuration for conventional sheet-fed rotary printing presses.

[0009] Variations of the configuration are presented in the dependent claims. The sheet transport means can be embodied as a combination of a chain conveyor system and also as a combination of a sheet transport drum and a chain conveyor system. Further, the arrangement relationship of all the printing apparatus units can be configured for one-sided printing or for backside printing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on the illustrated embodiment.

The sheet-fed rotary printing press shown in FIG. 1 comprises a number of printing device units 1-4. The printing device units 1 to 4 are provided as offset printing device units, each comprising a plate cylinder 6 having one color ink and one dampening solution device, one blanket cylinder 7 and one impression cylinder 8. I have. This configuration is conventional, in which the impression cylinders 8 are connected to one another via a sheet transport drum 9.

The sheet guide elements, ie the impression cylinder 8 and the sheet guide drum 9, are provided with a chain conveyor system 11.
Is connected. The chain conveyor system 11 extends from the last impression cylinder 8 above the printing press units 1 to 4 and is guided here over a sheet-fed rotary printing press at a distance to the elements of the printing press unit. Is returned.

The sheets 10 are singulated one by one from a sheet pile in a sheet feeder 12 and guided on a short feeder 22 and by a front gripper or as shown. As described above, the sheet is directly transferred to the sheet guide drum 9 by the sheet supply drum 17 and then to the first impression cylinder 8. The sheet then travels via the sheet guiding drum 9 and the impression cylinder 8 through all the printing zones of the printing units 1-4. From the impression cylinder 8 of the last printing unit 4, the sheet 10 is passed to the chain conveyor system 11 and is returned by the upper feed side 11B of the chain conveyor system 11 above the sheet-fed rotary printing press. It is. In this case, the sheet 10 is guided in a transport plane by a sheet guiding device. The sheet guide device can be composed of an active sheet guide path including a passive element such as a sheet guide plate or a fan device. When the sheet is returned to the first printing device unit 1, the sheet is returned to the chain conveyor system 11.
To the pile stack of the sheet discharging device 14 and is lowered there.

Since the printing of images in the printing apparatus units 1 to 4 is performed with the image side up, the image side is turned downward when transported on the return-feed side 11 B of the chain conveyor system 11. A dryer can be provided below the return-feed side 11B of the chain conveyor system 11 to enhance the effect of the printing press. In FIG. 1, such a dryer 16 is the feed side 1 of the chain conveyor system 11.
It is assigned to the ascending section of 1B. The drying section can therefore be formed to almost any length.

If a turning device is used between the printing device units of the sheet-fed rotary printing press, in order to achieve a good drying behavior, in addition to the intermediate drying device in the printing device unit, a double-sided drying device is used. Can be provided in the range of the chain conveyor system 11. The sheet 10 is guided along the turning arc 15 in order to correctly lower the surface from the chain conveyor system 11, whereby the printing surface is again turned upward. Furthermore, on the outgoing-feed side 11A, which is leading in the working direction of the sheet-fed rotary printing press, the sheet 10 is guided past the stack of the delivery device 14 and is arranged in a special lifting device. The paper is discharged onto the anti-waste paper pile 18.
This makes it possible, in a simple manner, to automatically change the sheet pile and to separate the test sheet or the old sheet in the delivery device 14.

The parallel arrangement of the paper supply device 12 and the paper discharge device 14 makes it possible to integrate a logistic system (distribution management system) in a particularly advantageous manner. This logistic system includes a supply roller transport path A, a pallet transport system B, and a discharge roller transport path C. The sheet pile is lowered to the supply roller transport path A by the transport means D, and is then supplied to the sheet feeding device 12 by this transport path. For automatic and continuous exchange of sheet piles in the paper feed device 12, a pile exchange device 12A is provided in this case. When the number of sheet piles in the sheet feeding device 12 is reduced, the above-described pile changing device 12 is used.
A, the pallet supporting the pile residue is taken out of the paper feeding device 12 and lowered onto the pallet transport system C, and at the same time, a new sheet pile is fed to the paper feeding device 1.
2. The empty pallet is guided to the paper discharge device 14 on a pallet transport system C that connects the paper supply device 12 to the paper discharge device 14. For this purpose, in FIG. 1, a rotary element C1 is provided, by means of which the pallets are turned and transported in any direction. Pallet transport system C
Also, if more pallets are required in the delivery device 14 than are unloaded from the sheet feeder 12,
A supply device for supplying additional pallets can be provided. The sheet discharging device 14 is, of course, equipped with a suitable automatic pallet changing device.

The pallet transport system C can also be used as a damming section for excess pallets. Furthermore, the pallet transport system C can be provided with an unloading device, whereby pallets with pile residues that are no longer required or with sheet piles that cannot be processed in the feeder 12 or the pile changer 12A. Can be carried out without disturbing the supply and discharge of the pile on the operating side of the sheet-fed rotary printing press.

The pile supply or the pile exchange in the paper feeder 12 and the paper output device 14 can in principle take place on both sides of the logistic system or in all directions, so that the sheet pile is partially Can be reused in the sheet feeding device 12 and the sheet discharging device 14.

From the sheet feeder 12 to the sheet discharger 1
In order to transport the pallets to 4, another transport means can be used instead of a rotary element for transporting the pallets from the sheet feeder 12 to the sheet output device 14.

Advantageously, in this printing press, the logistics is arranged in a center for processing the printing material. However, this arrangement can also be varied within certain limits. In the above-described embodiment of the printing press, an extremely long drying section is obtained while simultaneously improving operability with a short operation distance. The arrangement is selected in such a way that a high stacking height is obtained in the sheet feeder and in particular in the sheet discharger without the use of a support mechanism. At the same time, anti-paper discharge mechanisms are incorporated in the logistics area. If an anti-paper discharge mechanism is used, the automatic pile change in the sheet discharge device 14 is improved by the fact that arbitrarily large gaps are created in the sheet flow during the pile change process. . By completely sealing the sheet feeder 12 and the sheet discharger 14, the operation of the printing technician is performed very well and the separation of the logistics range from the printing range is achieved.

The sheet-fed rotary printing press of FIG. 2 substantially corresponds to the sheet-fed rotary printing press of FIG. This sheet-fed rotary printing press also has a logistic center. In this case, the logistic center is not shown. The difference from the embodiment of FIG. 1 is that in the embodiment of FIG. 2, another working unit 5 is provided following the impression cylinder 8 of the last printing device unit. The sheets 10 are supplied to this working unit by a sheet transport drum 23. If the sheet transport drum 23 is configured in the form of an impression cylinder, a coating unit 24 can be assigned to the printing sheet in order to enhance the quality of both sides with lacquer or other coating material. The sheets are then fed via a further sheet transport drum 23 to the chain conveyor system 11. The last working unit 5 in the form of a transfer drum unit can be formed in a very advantageous manner as an additional working unit. Here, the sheet can be subjected to calendering, in other words, glazing, numbering, perforation, narrow grooving, grooving, cutting, heating, humidification and the like. If the transfer drum unit is used as a duplex printer unit, in some cases, a turning device may not be necessary.
For duplex printing, one of the coating units 24 described above can be used as a flexographic printing unit.

FIG. 3 shows a sheet-fed rotary printing press as described above, which is supplemented with further printing units 30 and 31. These are connected by a chain conveyor system 32 to the last sheet guide drum 9 of the printing unit 4. The printing unit 30, 31 is configured as an upside-down printing unit, in which case the impression cylinder 33 is arranged on the upper side and the transfer cylinder 34 and the plate cylinder 35, together with the ink and dampening unit 36, are located on the lower side. Are located in Printing unit 3 according to the combination shown
In 0, 31 the printed sheet 10 previously printed from the front side
Another multi-color print image is printed from the back side. From the impression cylinder 33 of the printing unit 31 the printed sheets 10 are passed on to a further chain conveyor system 37, which guides the sheets to the chain conveyor system 11 and the chain conveyor system 1
By means of 1, the printed sheet is then discharged onto a sheet discharge device 14. If the printing device units 30 and 31 are not required, the printing sheets can be transferred to the chain conveyor system 32.
Can be transferred directly to the chain conveyor system 11 and returned to the sheet discharge device 14.

Finally, FIG. 4 shows a sheet-fed rotary printing press capable of single-sided and double-sided printing. For this purpose, the second printing device units 41 to 41 having the same function are arranged on the printing device units 1 to 4 known from FIG.
44 are arranged. These printing device units 41
44 are arranged, in particular, such that their sheet running direction is opposite to the running direction of the printing device units 1-4. A chain conveyor system 45 is arranged between the last printing press unit 4 of the lower printing press and the first printing press unit 41 of the upper printing press, which is still the printed sheet. The printing sheet is fed to the upper printing press in order to print the unprinted back side by the printing unit 41-44. In this case, the printed sheets are conveyed with the same gripper edge as in the lower printing presses 1-4. Subsequent to the printing unit 44, a chain conveyor system 11, here shortened, is arranged for discharging printed sheets onto the sheet discharge device 14. The printing press consists of a standard part and is capable of front and back printing in a simple manner without complicated turning devices.

In the above-described configuration of a sheet-fed rotary printing press, the use of a system with a drum device instead of a chain conveyor system is also conceivable. This is related to locational circumstances. All sheet transport means may be constituted by sheet guide means of the mechanical, pneumatic or combined type.
The same can be said for the case where the drying auxiliary means is provided.

Furthermore, in any of the above arrangements, other printing methods can be used, such as direct or indirect flexographic printing, direct or indirect intaglio printing, waterless offset printing or various coating methods. All of these methods can be incorporated into the logistics method described above.

[Brief description of the drawings]

FIG. 1 shows a sheet-fed rotary printing press with a chain conveyor system and logistics.

2 shows the sheet-fed rotary printing press of FIG. 1 with a processing device and a plurality of chain conveyor systems.

3 shows the sheet-fed rotary printing press of FIG. 1 with a cylinder unit.

FIG. 4 shows a sheet-fed rotary printing press for duplex printing.

[Explanation of symbols]

 1, 2, 3, 4 Printer unit 5 Working unit 6 Plate cylinder 7 Blanket cylinder 8 Impression cylinder 9 Sheet transport drum 10 Printing sheet 11 Chain conveyor system 11A Go-feed side 11B Return-feed side 12 Paper feed Apparatus 12A Pile exchange device 14 Paper discharge device 15 Revolved arc-shaped portion 16 Dryer 17 Paper feed drum 18 Anti-old sheet pile 22 Paper feed stand 23 Sheet transport drum 24 Coating unit 30, 31 Printing device unit 32 Chain conveyor system 33 pressure cylinder 34 transfer cylinder 35 plate cylinder 36 inking device and dampening solution device 37 chain conveyor system 41, 42 printing device unit 43, 44 printing device unit 45 chain conveyor system A supply roller transport path B pallet transport system C discharge roller transport Road D Transporting means C1 Rotating means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65H 1/26 B65H 1/26 5/08 5/08 H 5/12 5/12 A 5/22 5 / 22 A (72) Inventor Jens Goebel, Germany 63500 Zelligenstadt Schlafbachweg 1, (72) Inventor Clemens Kammerer Germany 63500 Zelligenstadt Schrifbachbach, Germany 22 F term (reference) 2C020 AA01 AA04 AA12 CA12 2C034 AA12 AA43 3F049 BA22 LA06 LB03 3F101 CA14 CA17 LA06 LB03 3F343 FA02 FB05 FC30 GA01 GB01 HA17 HB04 HC30 KB02 KB17 KB19 LA02 LA13 MB08

Claims (14)

[Claims] At least one sheet feeder, a sheet discharger, a plurality of printing device units and / or working units, and printing sheets in a printing zone of all printing device units. Multicolor, comprising a first sheet transport means for transporting the same through and at least one first endless chain conveyor system provided for transporting printed sheets to a delivery device. In a sheet-fed rotary printing press for printing, a first sheet transport means (8, 9, 23) is arranged below a printing device unit (1-4) or a working unit (5), and prints. On the upper side of the device units (1 to 4), another sheet conveying means (11) provided for conveying the printing sheet in a direction opposite to the direction of progress of the printing process is arranged, and The paper feeding device (12) and the sheet discharging device (14) Alternatively, they are arranged in parallel on the same side of the sheet-fed rotary printing press, and the sheet feeder (12) and the sheet discharger (14) are connected by one common pile transport system. A sheet-fed rotary printing press for multicolor printing. 2. A sheet feeder (12) and a sheet discharger (14) are arranged parallel to each other on the same side of a sheet rotary printing press. ) Are arranged between the first printing device unit (1) and the sheet delivery device (14), in which case a further sheet transport means (11) is provided for the sheet supply device (12). 2. The sheet-fed rotary printing press according to claim 1, wherein the sheet-fed rotary press is guided over a sheet-feeding device. 3. The further sheet transport means is an endless chain conveyor system (11) having a forward-feed side (11A) and a return-feed side (11B), wherein the forward-feed side. (11A) belongs to at least the sheet discharge device (14), and the return-feed side (11
B) is arranged above the printing unit (1-4) or the working unit (5) as a sheet guide part of the chain conveyor system (11), and the printed sheet is returned to the return-feed side (11B). , The sheet delivery device (14) on the side of the sheet feeder (12) of the sheet-fed rotary printing press.
2. The device according to claim 1, wherein the device can be delivered to
Or a sheet-fed rotary printing press according to 2. 4. The first printing device unit (1-4)
At least one work unit (5) formed from a drum and a drum belongs, in which case printed sheets can be delivered from the work unit to the chain conveyor system (11), in which case the work unit (5) ) Is configured as a transfer drum unit, and is provided with a device for performing, for example, coating, perforation, numbering, or the like, or is configured as a double-sided printing device unit. 2. A sheet-fed rotary printing press according to claim 1. 5. The method according to claim 5, wherein the first printing device unit has at least one
One further printing device unit (30, 31) belongs to it, by means of which another printing device unit (30, 31) can print printed sheets from below, and the further printing device unit is It is connected to a sheet-fed rotary printing press by a sheet transport system, in which the sheet transport system prints the printed sheets correctly in a printing device unit (30, 3).
4. The sheet-fed rotary printing press according to claim 1, wherein the sheet-fed rotary printing press is configured to be delivered to 1). 6. A printing unit comprising at least one further, one or more further printing device units (41-44) belonging to the first printing device unit (1-4). A unit arranged in parallel with the first printing device unit (1-4) and belonging to said printing device unit in a direction opposite to the sheet transport direction;
In this case, a sheet transport system is arranged between the first printing device unit (1-4) and the further printing device unit (41-44) so that the printed sheets have the same edge in front. And the further printing device unit (41-44)
4. The sheet-fed rotary printing press according to claim 1, wherein the printing is performed from the back side. 7. A transport device for feeding a sheet pile to a sheet feeder (12) and a transport device for discharging the sheet pile at a sheet delivery device (14). And a sheet feeder (12) and a sheet discharger (1
4) are connected to each other via a conveying device, and the conveyance of at least one pile and / or pallet is performed by directly connecting the sheet feeding device (12) and the sheet discharging device (14). A sheet-fed rotary printing press according to any one of the preceding claims. 8. The transport connection is configured as a pallet transport system (B), said pallet transport system comprising a feed roller transport path (A) guided in a sheet feeder (12) and / or sheets. 8. The sheet-fed rotary printing press according to claim 7, wherein the sheet-fed rotary printing press is connected to a discharge roller transport path (C) guided in a sheet discharge device (14). 9. The pallet transport system (B) includes a device for moving empty pallets and piled pallets, wherein the pallets are buffered, fed and ejected, the transport direction is changed, and the pallets are selectively transported. 9. The sheet-fed rotary printing press according to claim 6, wherein the sheet is fed into or out of a sheet feeder (12) or a sheet discharger (14). 10. The sheet-feeding device (12) and the sheet-discharge device (14) as a structural unit. Sheet-fed rotary printing press. 11. A printing device unit (1-4; 30, 3)
1; 41 to 44) or a lacquering device (9), a flexographic printing device or an intaglio printing device is optionally provided for use in the working unit (5). 11. The sheet-fed rotary printing press according to any one of claims 1 to 10. 12. A chain conveyor system (11; 32, 37; 4) for one or both sides of the printed sheets to be conveyed.
12. The sheet-fed rotary printing press according to claim 1, wherein a drying device (16) is provided parallel to the conveying path (5). 13. The sheet delivery device (14), in the conveying direction of the chain conveyor system (11), preferably approximately above the sheet delivery device (12), in the direction of the anti-fed sheet delivery. 13. The sheet-fed rotary printing press according to claim 1, wherein a device for printing is provided downstream. 14. The printing sheet of a sheet-fed rotary printing press can be fed from a sheet feeder (12), preferably via an elevated feed system. A paper feed table (22) arranged between the sheet pile in the paper feed device (12) and the sheet receiving location of the feed drum (17)
Of the pile changer (12) has a very slight or no slope at all.
2. A system according to claim 1, wherein A) is configured as a residual pile support system that can be brought into and out of the space below the supply plane into the pile area of the sheet feeder. 14. The sheet-fed rotary printing press according to any one of claims 1 to 13.