CA1119460A - Inking unit arrangement in a rotary offset printing machine - Google Patents
Inking unit arrangement in a rotary offset printing machineInfo
- Publication number
- CA1119460A CA1119460A CA000289015A CA289015A CA1119460A CA 1119460 A CA1119460 A CA 1119460A CA 000289015 A CA000289015 A CA 000289015A CA 289015 A CA289015 A CA 289015A CA 1119460 A CA1119460 A CA 1119460A
- Authority
- CA
- Canada
- Prior art keywords
- cylinder
- rollers
- numbering
- inking
- offset printing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Rotary Presses (AREA)
- Printing Methods (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The specification describes an inking unit arrangement in an in-line rotary offset printing machine for the inking of a numbering cylinder disposed in an offset printing unit. The arrangement does not include an offset printing unit. However it does include two application rollers provided for the inking of the numbering cylinder which are connected to the ink duct by way of a chain of inking rollers, thereby utilizing the roller mountings provided in the offset printing unit for the inking and damping units.
The specification describes an inking unit arrangement in an in-line rotary offset printing machine for the inking of a numbering cylinder disposed in an offset printing unit. The arrangement does not include an offset printing unit. However it does include two application rollers provided for the inking of the numbering cylinder which are connected to the ink duct by way of a chain of inking rollers, thereby utilizing the roller mountings provided in the offset printing unit for the inking and damping units.
Description
This invention relates to an inking unit arrangement in an in-line rotary offset printing machine, for the linking of a numbering cylinder disposed in an offset printing unit.
Certain printers using multicolour rotary offset printing machines in an in-line arrangement require their own numbering printing units. If the numbering printing units had to be produced in large numbers, a special printing unit would be designed for them. This however requires additional expense, for example for new side frames, so that there would be no price advantage for the customer.
It has already been attempted to replace the plate cylinder by a blanket inking cylinder, and to provide a numbering cylinder instead of the previous blanket cylinder.
The damping unit is put out of action and the inking unit inks the blanket inking cylinder, which in turn transfers the ink to the numbering cylinder. Since the blanket inking cylinder and the numbering cylinder have the same diameter and are driven at the same speed, the numbers to be inked always encounter the rubber inking cylinder at the same position. Consequently not only is the blanket on this cylinder damaged, but the quality of inking also suffers.
Consequently, with this known solution clean inking is not ensured. Furthermore, the same technical expenditure is necessary as for a normal offset printing unit.
The problem underlying the invention is that of providing a simple, inexpensive arrangement of inking unit rollers for the uniform and accurate inking of a numbering cylinder which is installed in an offset printing unit it-stead of the rubber cylinder, while making the greatest possible use of inking and damping unit parts already 1 existing in -the printing unit, -together with the appextaining drive, controls, and so on.
According to the invention the problem is solved in that the numbering cylinder is disposed in place of the blanket cylinder, that no plate cylinder is disposed in the offset printing unit, and that two application rollers are provided for the inking of the numbering cylinder and are connected to the ink duct by way of a chain of inking rollers, utilizing roller mounti.ngs provided in the ofEset printing unit for the inklng and damping units. The essential advan-tage of this solution consists in that while using serially produced printing units parts, such as side walls and the like, the plate cylinder, part of the inking unit, and parts of the damping unit are not required. No constructional expense for the new construction of special printing unit is entailed.
Furthermore, the uniform appearance of the individual printing unit of a machine does not suffer. In to the:life Q~
of an inking drum, the life of the application rollers is not limited by the diameter of the plate cylinder.
According to the invention an advantageous development consists in that, viewing ~rom the originally provided offset printing unit in the direction of rotation of -the plate cylinder provided, the first ink application roller and the appertaining direct inking roller line, four intermediate ro:Llers, and two application rollers lying ayainst the numbering cylinder form a chain of inking rollers, three of the intermediate rollers being mounted in the mounting of three existing damping rollers. In addition to the saving of a number of parts, another advantage of this solution is that the drive parts provided for driving these roll~rs can 1 still be used wi-thouk modification, and that no changes have ~o be made to the side walls, the gear quards, or the impression engagement and throw-off means.
In a slightly modified embodiment of the invention the chain of inking rollers consists of the direct inking roller line, the first two application rollers (viewed in the dixection of rqtation of the plate cylinder provided)l -two intermediate rollers, and two application rollers on the numbering cylinder, the last intermediate roller lying against the two application rollers. With a smaller numher of inking unit rollers a chain of inking rollers independent of the damping unit provided is formed and can be adapted to any type of inking unit.
Examples of embodiment of the invention are illustrated diagrammatically in the drawings, in which:
Figure 1 is a side view of an inking unit arrangement utilizing the damping roller mountings provided, and Figure 2 is a side view of the inking unit arrangement in which th~ inking rollers are disposed independently of the damping roller mounting provided.
Between the side frames 1 of an offset printing unit disposed in line with other ofset printing units the sheet to be printed is fed by means of transfer drums 2, 3 to the impression cylinder 4, on which it is printed ln known manner. Thereupon the sheet is passed on to the next transfer drum and thence to the other printing units or to the delivery means.
Instead of the blanket cylinder normally fitted, a numbering cylinder 6 is provided in Figure 1. The pla-te 3~ cylinder 7 normally provided is dispensed with, and in its 1 place the drive wheel on the outside of the side frame 1 is simply mounted on a bearing pin~ The sheets to be printed receive their impression direct from the numbering cylinder between the impression cylinder 4 and the numbering cylinder 6.
The numbering cylinder 6 is inked by means of the duct roller 8 already provided in the offset printing unit, together with the ink duct 9, the lifter roller 10, the distributor rollers 11, 12, 13 with the interposed inking rollers 14, and the first ink application roller 15 (viewing in the direction of rotation of the plate cylinder 7 provided).
Thereupon the ink is transferred by way of four intermediate rollers 16, 17, 18, 19 to two application rollers 20, 21 lying against the numbering cylinder 6. The three inter-mediate rollers 17, 18 and 19 in this arrangement are mounted in the mountings of three existing damping rollers, the intermediate roller 18 being provided as ink distributor roller.
Of the chain of inking rollers described, the rollers 16, 20 and 21 with their mountings are thus additionally installed between the side frames 1. On the other hancl, the plate cylinder 7, the inking unit rollers 22 shown in clot-and-dash lines above it, and the two damping uni~ rollers 23 together with the water fountain are dispensed with. The elimination of the inking unit rollers 22 also provides the advantage of excellent accessibility to the numbering cylinder.
The offset printing unit shown in Figure 2 is likewise provided with the transfer drums 2, 3 the impression cylinder 4, the transfer drum 5, and the numbering cylinder 6 instead of the blanket cylinder. Here again no plate cylinder 4~
1 7 is disposed between the side frame 1. The chain of inking rollers consists of the rollers 8, 10, 11, 12, 13 and 14, while the rollers 15 can be supplemented by the second ink application roller 15' (viewing in the direction of rotation ~o~the existing plate cylinder 7). The two ink application rollers 15, 15' lie against the intermediate roller 24, and the latter in turn lies against the intermediate rolller 25. The intermediate roller 25 transfers the ink to two application rollers 26, 27 which in turn ink the number~ng units on the numbering cylinder 6. The intermediate roller 25 may be driven as distributor cylinder., Because o~ its~
mounting it is advantageous in this arrangement for it to be disposed approximately in the middle of the existing plate cylinder. Instead of two application rollers 20, 21 or 26, ~ 27, it is also possible for one or more application rollers ; to be used in each oase or special printing work.
In the arrangement shown In Figure 2 the plate ~
cylinder 7, the ink~ng unit roller 22 shown in dot-and-dash lines and the complete damping unit 24 are also dispensed ;;
with. In return, the rollers 24, 25, 26 and 27 are added between the side frames.
Since in the examples of construction of a numbering printing ~mit illustràted there is a saving of a number of parts in comparison with a normal offset printing unit, there is a considerable cost advantage for series production.
It should also be borne in mind that no additional costs for patterns for castings are incurred.
~ .
.
Certain printers using multicolour rotary offset printing machines in an in-line arrangement require their own numbering printing units. If the numbering printing units had to be produced in large numbers, a special printing unit would be designed for them. This however requires additional expense, for example for new side frames, so that there would be no price advantage for the customer.
It has already been attempted to replace the plate cylinder by a blanket inking cylinder, and to provide a numbering cylinder instead of the previous blanket cylinder.
The damping unit is put out of action and the inking unit inks the blanket inking cylinder, which in turn transfers the ink to the numbering cylinder. Since the blanket inking cylinder and the numbering cylinder have the same diameter and are driven at the same speed, the numbers to be inked always encounter the rubber inking cylinder at the same position. Consequently not only is the blanket on this cylinder damaged, but the quality of inking also suffers.
Consequently, with this known solution clean inking is not ensured. Furthermore, the same technical expenditure is necessary as for a normal offset printing unit.
The problem underlying the invention is that of providing a simple, inexpensive arrangement of inking unit rollers for the uniform and accurate inking of a numbering cylinder which is installed in an offset printing unit it-stead of the rubber cylinder, while making the greatest possible use of inking and damping unit parts already 1 existing in -the printing unit, -together with the appextaining drive, controls, and so on.
According to the invention the problem is solved in that the numbering cylinder is disposed in place of the blanket cylinder, that no plate cylinder is disposed in the offset printing unit, and that two application rollers are provided for the inking of the numbering cylinder and are connected to the ink duct by way of a chain of inking rollers, utilizing roller mounti.ngs provided in the ofEset printing unit for the inklng and damping units. The essential advan-tage of this solution consists in that while using serially produced printing units parts, such as side walls and the like, the plate cylinder, part of the inking unit, and parts of the damping unit are not required. No constructional expense for the new construction of special printing unit is entailed.
Furthermore, the uniform appearance of the individual printing unit of a machine does not suffer. In to the:life Q~
of an inking drum, the life of the application rollers is not limited by the diameter of the plate cylinder.
According to the invention an advantageous development consists in that, viewing ~rom the originally provided offset printing unit in the direction of rotation of -the plate cylinder provided, the first ink application roller and the appertaining direct inking roller line, four intermediate ro:Llers, and two application rollers lying ayainst the numbering cylinder form a chain of inking rollers, three of the intermediate rollers being mounted in the mounting of three existing damping rollers. In addition to the saving of a number of parts, another advantage of this solution is that the drive parts provided for driving these roll~rs can 1 still be used wi-thouk modification, and that no changes have ~o be made to the side walls, the gear quards, or the impression engagement and throw-off means.
In a slightly modified embodiment of the invention the chain of inking rollers consists of the direct inking roller line, the first two application rollers (viewed in the dixection of rqtation of the plate cylinder provided)l -two intermediate rollers, and two application rollers on the numbering cylinder, the last intermediate roller lying against the two application rollers. With a smaller numher of inking unit rollers a chain of inking rollers independent of the damping unit provided is formed and can be adapted to any type of inking unit.
Examples of embodiment of the invention are illustrated diagrammatically in the drawings, in which:
Figure 1 is a side view of an inking unit arrangement utilizing the damping roller mountings provided, and Figure 2 is a side view of the inking unit arrangement in which th~ inking rollers are disposed independently of the damping roller mounting provided.
Between the side frames 1 of an offset printing unit disposed in line with other ofset printing units the sheet to be printed is fed by means of transfer drums 2, 3 to the impression cylinder 4, on which it is printed ln known manner. Thereupon the sheet is passed on to the next transfer drum and thence to the other printing units or to the delivery means.
Instead of the blanket cylinder normally fitted, a numbering cylinder 6 is provided in Figure 1. The pla-te 3~ cylinder 7 normally provided is dispensed with, and in its 1 place the drive wheel on the outside of the side frame 1 is simply mounted on a bearing pin~ The sheets to be printed receive their impression direct from the numbering cylinder between the impression cylinder 4 and the numbering cylinder 6.
The numbering cylinder 6 is inked by means of the duct roller 8 already provided in the offset printing unit, together with the ink duct 9, the lifter roller 10, the distributor rollers 11, 12, 13 with the interposed inking rollers 14, and the first ink application roller 15 (viewing in the direction of rotation of the plate cylinder 7 provided).
Thereupon the ink is transferred by way of four intermediate rollers 16, 17, 18, 19 to two application rollers 20, 21 lying against the numbering cylinder 6. The three inter-mediate rollers 17, 18 and 19 in this arrangement are mounted in the mountings of three existing damping rollers, the intermediate roller 18 being provided as ink distributor roller.
Of the chain of inking rollers described, the rollers 16, 20 and 21 with their mountings are thus additionally installed between the side frames 1. On the other hancl, the plate cylinder 7, the inking unit rollers 22 shown in clot-and-dash lines above it, and the two damping uni~ rollers 23 together with the water fountain are dispensed with. The elimination of the inking unit rollers 22 also provides the advantage of excellent accessibility to the numbering cylinder.
The offset printing unit shown in Figure 2 is likewise provided with the transfer drums 2, 3 the impression cylinder 4, the transfer drum 5, and the numbering cylinder 6 instead of the blanket cylinder. Here again no plate cylinder 4~
1 7 is disposed between the side frame 1. The chain of inking rollers consists of the rollers 8, 10, 11, 12, 13 and 14, while the rollers 15 can be supplemented by the second ink application roller 15' (viewing in the direction of rotation ~o~the existing plate cylinder 7). The two ink application rollers 15, 15' lie against the intermediate roller 24, and the latter in turn lies against the intermediate rolller 25. The intermediate roller 25 transfers the ink to two application rollers 26, 27 which in turn ink the number~ng units on the numbering cylinder 6. The intermediate roller 25 may be driven as distributor cylinder., Because o~ its~
mounting it is advantageous in this arrangement for it to be disposed approximately in the middle of the existing plate cylinder. Instead of two application rollers 20, 21 or 26, ~ 27, it is also possible for one or more application rollers ; to be used in each oase or special printing work.
In the arrangement shown In Figure 2 the plate ~
cylinder 7, the ink~ng unit roller 22 shown in dot-and-dash lines and the complete damping unit 24 are also dispensed ;;
with. In return, the rollers 24, 25, 26 and 27 are added between the side frames.
Since in the examples of construction of a numbering printing ~mit illustràted there is a saving of a number of parts in comparison with a normal offset printing unit, there is a considerable cost advantage for series production.
It should also be borne in mind that no additional costs for patterns for castings are incurred.
~ .
.
Claims (3)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An in-line rotary printing machine convertible for use in one of the modes consisting of an offset printing mode and numbering mode, said printing machine comprising a frame member having sidewalls and when used in the offset mode, includes a printing cylinder, a blanket cylinder and an ink supply and dampening system for said plate cylinder, said ink supply and dampening system including an ink duct, a first set of rollers in contact with one another to transfer ink from said ink duct to the application rollers of said plate cylinder, said rollers, said plate cylinder and said blanket cylinder being rotatably mounted between said sidewalls; said plate cylinder and said blanket cylinder being removed when said machine is to be used in the numbering mode with a numbering cylinder replacing said blanket cylinder, at least 3 additional rollers being inserted between said sidewalls for connecting said ink supply to said numbering cylinder with two of these rollers being application rollers in contact with said numbering cylinder.
2. An in-line rotary printing machine as claimed in claim 1 wherein 4 rollers are added, one of which is secured in place of said plate cylinder and the forth roller interconnects the application rollers of said plate cylinder when used in the offset mode, with said roller secured in place of said plate cylinder which in turn contacts the application rollers os said numbering cylinder whereby a chain of rollers is established for connecting said ink supply with said numbering cylinder.
3. An in-line rotary printing machine as claimed in claim 1 wherein when used in the numbering mode, 3 rollers are added inclusive of the two application rollers of said numbering cylinder with the third roller connecting said ink supply to a number of rollers of said dampening system which are in contact with the application rollers of said numberinmg cylinder to connect said ink supply to said numbering cylinder by a chain of rollers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2657610A DE2657610B2 (en) | 1976-12-18 | 1976-12-18 | Numbering printing unit of an offset rotary printing press |
| DEP2657610.3 | 1976-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1119460A true CA1119460A (en) | 1982-03-09 |
Family
ID=5995959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000289015A Expired CA1119460A (en) | 1976-12-18 | 1977-10-19 | Inking unit arrangement in a rotary offset printing machine |
Country Status (12)
| Country | Link |
|---|---|
| JP (3) | JPS5377709A (en) |
| AT (1) | AT372649B (en) |
| CA (1) | CA1119460A (en) |
| CH (1) | CH625747A5 (en) |
| CS (1) | CS215005B2 (en) |
| DE (1) | DE2657610B2 (en) |
| ES (1) | ES232482Y (en) |
| FR (1) | FR2374164A1 (en) |
| GB (1) | GB1579068A (en) |
| IT (1) | IT1117133B (en) |
| NL (1) | NL167899C (en) |
| SE (1) | SE416031B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3006100C2 (en) * | 1979-06-13 | 1984-02-02 | Ryobi Ltd., Fuchu, Hiroshima | Offset printing machine |
| JPS56149659U (en) * | 1980-04-07 | 1981-11-10 | ||
| DE3329331A1 (en) * | 1983-08-13 | 1985-03-07 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | PRINT WORK WITH SHORT INK |
| DE3413159C2 (en) * | 1984-04-07 | 1986-09-18 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Sheet-fed rotary offset printing machine for the production of one-sided multi-color printing or double-sided printing |
| DE3535693A1 (en) * | 1985-10-05 | 1987-04-09 | Roland Man Druckmasch | MULTICOLOR SHEET OFFERING ROTARY PRINTING MACHINE |
-
1976
- 1976-12-18 DE DE2657610A patent/DE2657610B2/en not_active Ceased
-
1977
- 1977-09-28 CH CH1186277A patent/CH625747A5/en not_active IP Right Cessation
- 1977-09-29 AT AT0695477A patent/AT372649B/en not_active IP Right Cessation
- 1977-10-19 CA CA000289015A patent/CA1119460A/en not_active Expired
- 1977-10-19 GB GB43497/77A patent/GB1579068A/en not_active Expired
- 1977-11-03 NL NL7712127A patent/NL167899C/en not_active IP Right Cessation
- 1977-11-16 CS CS777553A patent/CS215005B2/en unknown
- 1977-12-02 ES ES1977232482U patent/ES232482Y/en not_active Expired
- 1977-12-16 IT IT69823/77A patent/IT1117133B/en active
- 1977-12-16 JP JP15229977A patent/JPS5377709A/en active Pending
- 1977-12-16 FR FR7738036A patent/FR2374164A1/en active Granted
- 1977-12-19 SE SE7714446A patent/SE416031B/en unknown
-
1981
- 1981-04-28 JP JP1981060783U patent/JPS6321417Y2/ja not_active Expired
- 1981-04-28 JP JP1981060782U patent/JPS6321416Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2657610A1 (en) | 1978-06-22 |
| JPS6321416Y2 (en) | 1988-06-13 |
| JPS6321417Y2 (en) | 1988-06-13 |
| GB1579068A (en) | 1980-11-12 |
| DE2657610B2 (en) | 1978-09-28 |
| CH625747A5 (en) | 1981-10-15 |
| AT372649B (en) | 1983-10-25 |
| IT1117133B (en) | 1986-02-10 |
| JPS5377709A (en) | 1978-07-10 |
| SE416031B (en) | 1980-11-24 |
| CS215005B2 (en) | 1982-06-25 |
| FR2374164B1 (en) | 1984-10-05 |
| NL167899C (en) | 1982-02-16 |
| SE7714446L (en) | 1978-06-19 |
| ES232482Y (en) | 1978-06-01 |
| ATA695477A (en) | 1983-03-15 |
| NL7712127A (en) | 1978-06-20 |
| ES232482U (en) | 1978-02-01 |
| JPS56171235U (en) | 1981-12-17 |
| FR2374164A1 (en) | 1978-07-13 |
| JPS571650U (en) | 1982-01-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |