GB1565766A – Printing machine
– Google Patents
GB1565766A – Printing machine
– Google Patents
Printing machine
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Info
Publication number
GB1565766A
GB1565766A
GB935378A
GB935378A
GB1565766A
GB 1565766 A
GB1565766 A
GB 1565766A
GB 935378 A
GB935378 A
GB 935378A
GB 935378 A
GB935378 A
GB 935378A
GB 1565766 A
GB1565766 A
GB 1565766A
Authority
GB
United Kingdom
Prior art keywords
roller
ink
drive shaft
main drive
transfer roller
Prior art date
1977-03-11
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
Application number
GB935378A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polygraph Leipzig Kombinat Veb
Original Assignee
Polygraph Leipzig Kombinat Veb
Priority date (The priority date 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 date listed.)
1977-03-11
Filing date
1978-03-09
Publication date
1980-04-23
1978-03-09
Application filed by Polygraph Leipzig Kombinat Veb
filed
Critical
Polygraph Leipzig Kombinat Veb
1980-04-23
Publication of GB1565766A
publication
Critical
patent/GB1565766A/en
Status
Expired
legal-status
Critical
Current
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Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
B41F—PRINTING MACHINES OR PRESSES
B41F31/00—Inking arrangements or devices
B41F31/004—Driving means for ink rollers
B—PERFORMING OPERATIONS; TRANSPORTING
B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
B41F—PRINTING MACHINES OR PRESSES
B41F31/00—Inking arrangements or devices
B41F31/15—Devices for moving vibrator-rollers
B—PERFORMING OPERATIONS; TRANSPORTING
B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
B41P2213/40—Auxiliary devices or processes associated with the drives
B41P2213/42—Vibration-dampers for machine parts
Description
(54) PRINTING MACHINE
(71) We, VEB POLYGRAPH LEIPZIG KOMBINAT FijR, POLYGRAPHISCHE
MASCHINEN UND AUSRijSTUNGEN of 705 Leipzig, Zweinaundorfer Strasse 59,
German Democratic Republic, a corporation organised under the laws of the German
Democratic Republic do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
The present invention relates to a printing apparatus.
In known printing apparatus comprising vibrator inking mechanisms, a vibrator roller bears briefly against a slowly rotating ink pick-up roller and then against a first ink transfer roller rotating with the speed of printing. The vibrator roller, which is not driven on its own, is entrained by the ink pick-up roller during the transfer of a more or less narrow ink stripe by friction. After the movement stroke, the vibrator roller bears against the first ink transfer roller. In this instant, the energy requirement for the instantaneous acceleration of the vibrator roller has the effect of a shock which leads to a series of unpleasant phenomena reducing the quality of printing.
Measures, such as those disclosed in the US-PS 3 002 451, according to which the drive connection between the printing cylinders and the rollers of inking mechanism takes place relatively elastically by way of roller chains or the like. merely provide a certain damping of the above mentioned drive shock.
To avoid the shock as far as possible, an inking mechanism has become known through the disclosure of DT-OS 2 031 504, in which a motor is provided for acceleration of the vibrator roller. The vibrator roller is accelerated during the movement stroke by a special driving roller disposed in frictional connection with it so far that the shock loading arising at the instant of the contact of the first ink transfer roller is brought to a minimum in the inking mechanism.
Disadvantages of the disclosure of DT-OS 2 031 054 are the high technical expenditure and that the driving roller associated with the vibrator roller lies outside the ink flow and so acts as an undesired ink storage. Thereby. the inking mechanism becomes sluggish for necessary corrections of inking quantities and inking profiles. i.e. variations of setting at the ductor blade etc. become effective on the printed product only after a considerable time.
To remedy this defect, US-PS 3 688 696 discloses a motor, which drives the vibrator roller through two V-belts, and which is switched on when the vibrator roller lifts off from the duct roller. The speed of the motor is so controlled during the stroke motion of the vibrator roller that the vibrator roller has a relatively high peripheral speed before it touches the first ink transfer roller. Associated with the motor is a tachometer which switches off the motor on the attainment of a predetermined rotational speed. Likewise the high technical expenditure is disadvantageous. With normal running speeds of modern rotary printing machines, a working cycle at the vibrator lasts only about 0.5 seconds. The acceleration phase, thus the time of the vibrator motion between the ink pick-up roller and the first ink transfer roller, lies in the region of tenths of a second. From this, a high loading. above all of the motor, may occur and therefore a high fault liability.
A printing machine comprising an ink pick-up roller for picking up ink from a supply thereof, an ink transfer roller spaced from the ink pick-up roller. a vibrator roller displaceable between the ink pick-uproller and the ink transfer roller to transfer ink from the ink pick-up roller to the ink transfer roller. and an ink distributor roller drivable from a main drive shaft and operably connected to the ink transfer roller by a further roller rotatable by friction between its peripheral surface and respectively the peripheral surface of the ink transfer roller and the peripheral surface of distributor roller, wherein the ink transfer roller is drivably connected to the main drive shaft independently of the drive connection to the distributor roller.
At least the peripheral surface of the further roller may be provided by a layer comprising rubber.
The printing machine may further comprise a cam to displace the vibrator roller between the ink pick-up roller and the ink transfer roller. the cam being drivably connected to the main drive shaft independently of the drive connection to the distributor roller.
The ink pick-up roller may be drivably connected to the main drive shaft independently of the drive connection to the distributor roller.
The cam and the ink transfer roller may be drivably connected by common transmission means to the main drive shaft.
The ink pick-up roller and the ink transfer roller may be drivably connected by common transmission means to the main drive shaft.
An embodiment of the present invention will now be more particularly described by way of example and with reference to the accompanying drawings in which:
Figure I shows a schematic illustration of a part of the upper half of a first form and inner form printing mechanism of a rotary roller offset printing machine,
Figure 2 shows a schematic illustration of the drive of the mechanism shown in Figure 1, and
Figure 3 shows a side elevation of the drive shown in Figure 2.
Referring now to the accompanying drawings, rubber blanket cylinders 3 and 4 are arranged above and below a web 2 and their respective plate cylinders 5 and 6 are arranged between the walls of the machine frame 1. An inking mechanism is associated with each of the plate cylinders 5 and 6. The ink held by an ink wall 7 is transferred by an ink pick-up roller 8 stripe by stripe to a vibrator roller 11 which is moved to and fro by means of a cam 9 and a cam roller 10 and from which the ink is transferred to a first ink transfer roller 12 and then by way of a first rubber roller 13. distributor rollers 14. further rubber rollers 13 and applicator rollers 15 to printing plates of the plate cylinders 5 and 6.
Figure 2 shows the driving wheel trains for the various rollers. Only those rollers up to the uppermost distributor roller 14 are driven from the main drive shaft 16 by way of the rubber blanket cylinder driving gear wheels 4′ and 3′, the plate cylinder driving gear wheels 5′ and 6′ and the distributor roller driving gear wheels 14′.
The first ink transfer roller 12 and the cam 9 are driven through driving gear wheels 12′ and 9′ and shaft 17 independently of the rollers 3 and 4. 5 and 6, and 14 from the main drive shaft 16.
In place of the translation gears of cone and spurwheels. the separate drive may take place by way of chain drives or toothed belts.
In place of a motor 18 in the dirvie of the ink pick-up roller 8, the ink roller may also be driven independently of the rollers 3 and 4. 5 and 6. and 14 by driving gear wheel 8′ connected for example with the cam driving gear wheel 9′.
Advantages of the embodiment described by way of example above are that the high expenditure for the attainment of the extremely brief high acceleration of the vibrator roller during the vibratory motion is avoided. that the increase in turning moment conducted away into the main drive shaft by reason of the relationships of its size to the stiffness of the drive shaft can lead to no disturbances influencing the quality of printing and that the turning moment shock is so greatly reduced by the arising slip and the elasticity of the transmitting rubber roller that no excitations of oscillation any longer arise in the further inking mechanism and thereby also in the printing cylinders.
WHAT WE CLAIM IS:
1. A printing machine comprising an ink pick-up roller for picking up ink from a supply thereof, an ink transfer roller spaced from the ink pick-up roller. a vibrator roller displaceable between the ink pick-up roller and the ink transfer roller to transfer ink from the ink pick-up roller to the ink transfer roller and an ink distributor roller drivable from a main drive shaft and operably connected to the ink transfer roller by a further roller rotatable by friction between its peripheral surface and respectively the peripheral surface of the ink transfer roller and the peripheral surface of distributor roller, wherein the ink transfer roller is drivably connected to the main drive shaft independently of the drive connection to the distributor roller.
2. A printing machine as claimed in claim 1. wherein at least the peripheral surface of the further roller is provided by a layer comprising rubber.
3. A printing machine as claimed in either claim 1 or claim 2, further comprising a cam to displace the vibrator roller between the ink pick-up roller and the ink transfer roller, the
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (7)
**WARNING** start of CLMS field may overlap end of DESC **. main drive shaft and operably connected to the ink transfer roller by a further roller rotatable by friction between its peripheral surface and respectively the peripheral surface of the ink transfer roller and the peripheral surface of distributor roller, wherein the ink transfer roller is drivably connected to the main drive shaft independently of the drive connection to the distributor roller. At least the peripheral surface of the further roller may be provided by a layer comprising rubber. The printing machine may further comprise a cam to displace the vibrator roller between the ink pick-up roller and the ink transfer roller. the cam being drivably connected to the main drive shaft independently of the drive connection to the distributor roller. The ink pick-up roller may be drivably connected to the main drive shaft independently of the drive connection to the distributor roller. The cam and the ink transfer roller may be drivably connected by common transmission means to the main drive shaft. The ink pick-up roller and the ink transfer roller may be drivably connected by common transmission means to the main drive shaft. An embodiment of the present invention will now be more particularly described by way of example and with reference to the accompanying drawings in which: Figure I shows a schematic illustration of a part of the upper half of a first form and inner form printing mechanism of a rotary roller offset printing machine, Figure 2 shows a schematic illustration of the drive of the mechanism shown in Figure 1, and Figure 3 shows a side elevation of the drive shown in Figure 2. Referring now to the accompanying drawings, rubber blanket cylinders 3 and 4 are arranged above and below a web 2 and their respective plate cylinders 5 and 6 are arranged between the walls of the machine frame 1. An inking mechanism is associated with each of the plate cylinders 5 and 6. The ink held by an ink wall 7 is transferred by an ink pick-up roller 8 stripe by stripe to a vibrator roller 11 which is moved to and fro by means of a cam 9 and a cam roller 10 and from which the ink is transferred to a first ink transfer roller 12 and then by way of a first rubber roller 13. distributor rollers 14. further rubber rollers 13 and applicator rollers 15 to printing plates of the plate cylinders 5 and 6. Figure 2 shows the driving wheel trains for the various rollers. Only those rollers up to the uppermost distributor roller 14 are driven from the main drive shaft 16 by way of the rubber blanket cylinder driving gear wheels 4′ and 3′, the plate cylinder driving gear wheels 5′ and 6′ and the distributor roller driving gear wheels 14′. The first ink transfer roller 12 and the cam 9 are driven through driving gear wheels 12′ and 9′ and shaft 17 independently of the rollers 3 and 4. 5 and 6, and 14 from the main drive shaft 16. In place of the translation gears of cone and spurwheels. the separate drive may take place by way of chain drives or toothed belts. In place of a motor 18 in the dirvie of the ink pick-up roller 8, the ink roller may also be driven independently of the rollers 3 and 4. 5 and 6. and 14 by driving gear wheel 8′ connected for example with the cam driving gear wheel 9′. Advantages of the embodiment described by way of example above are that the high expenditure for the attainment of the extremely brief high acceleration of the vibrator roller during the vibratory motion is avoided. that the increase in turning moment conducted away into the main drive shaft by reason of the relationships of its size to the stiffness of the drive shaft can lead to no disturbances influencing the quality of printing and that the turning moment shock is so greatly reduced by the arising slip and the elasticity of the transmitting rubber roller that no excitations of oscillation any longer arise in the further inking mechanism and thereby also in the printing cylinders. WHAT WE CLAIM IS:
1. A printing machine comprising an ink pick-up roller for picking up ink from a supply thereof, an ink transfer roller spaced from the ink pick-up roller. a vibrator roller displaceable between the ink pick-up roller and the ink transfer roller to transfer ink from the ink pick-up roller to the ink transfer roller and an ink distributor roller drivable from a main drive shaft and operably connected to the ink transfer roller by a further roller rotatable by friction between its peripheral surface and respectively the peripheral surface of the ink transfer roller and the peripheral surface of distributor roller, wherein the ink transfer roller is drivably connected to the main drive shaft independently of the drive connection to the distributor roller.
2. A printing machine as claimed in claim 1. wherein at least the peripheral surface of the further roller is provided by a layer comprising rubber.
3. A printing machine as claimed in either claim 1 or claim 2, further comprising a cam to displace the vibrator roller between the ink pick-up roller and the ink transfer roller, the
cam being drivably connected to the main drive shaft independently of the drive connection to the distributor roller.
4. A printing machine as claimed in any one of the preceding claims, wherein the ink pick-up roller is drivably connected to the main drive shaft independently of the drive connection to the distrbutor roller.
5. A printing machine as claimed in either claim 3 or claim 4, wherein the cam and the ink transfer roller are drivably connected by common transmission means to the main drive shaft.
6. A printing machine as claimed in either claim 4 or claim 5, wherein the ink pick-up roller and the ink transfer roller are drivably connected by common transmission means to the main drive shaft.
7. A printing machine substantially as hereinbefore described with reference to the accompanying drawings.
GB935378A
1977-03-11
1978-03-09
Printing machine
Expired
GB1565766A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DD19779477A
DD132253A1
(en)
1977-03-11
1977-03-11
COLOR FACTORY DRIVE
Publications (1)
Publication Number
Publication Date
GB1565766A
true
GB1565766A
(en)
1980-04-23
Family
ID=5507641
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB935378A
Expired
GB1565766A
(en)
1977-03-11
1978-03-09
Printing machine
Country Status (5)
Country
Link
DD
(1)
DD132253A1
(en)
DE
(1)
DE2808856C2
(en)
FR
(1)
FR2383017A1
(en)
GB
(1)
GB1565766A
(en)
SU
(1)
SU943013A1
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2233281A
(en)
*
1989-06-22
1991-01-09
Polygraph Leipzig
Inking mechanism for a rotary printing machine
Families Citing this family (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE3121962A1
(en)
*
1981-06-03
1982-12-23
Heidelberger Druckmaschinen Ag, 6900 Heidelberg
GRINDING ROLLER DRIVE AT THE INK OF OFFSET ROTATION PRINTING MACHINES
DE4231260C2
(en)
*
1992-09-18
1996-05-23
Heidelberger Druckmasch Ag
Print drive for ink transport rollers of a rotary printing machine
DE19515077B4
(en)
*
1995-04-28
2005-07-28
Heidelberger Druckmaschinen Ag
Process for imaging a printing form on a printing form cylinder in a printing unit of a rotary printing press with an inking unit
DE19516085C2
(en)
*
1995-05-03
2003-07-24
Koenig & Bauer Ag
Ink and dampening system
DE19715614B4
(en)
*
1997-04-15
2005-06-02
Man Roland Druckmaschinen Ag
Inking unit for a rotary printing machine
FR2921583B1
(en)
*
2007-10-02
2010-04-30
Goss Int Montataire Sa
LIQUID DISTRIBUTION UNIT AND CORRESPONDING OFFSET PRINTING PRESS
DE102008023716A1
(en)
*
2008-05-15
2009-11-26
Manroland Ag
Printing unit of a printing press
Family Cites Families (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE252381C
(en)
*
DE740190C
(en)
*
1941-04-24
1943-10-14
Koenig & Bauer Schnellpressfab
Drive for series rotary printing machines
US2425529A
(en)
*
1944-09-14
1947-08-12
Goss Printing Press Co Ltd
Inking mechanism for printing presses
FR920022A
(en)
*
1946-01-14
1947-03-25
Harris Seybold Potter Co
Improvements to inkwells for printing presses
FR1025717A
(en)
*
1949-10-26
1953-04-20
Winkler Maschf
Adjustable Ink Printing Machine
FR1025177A
(en)
*
1950-09-26
1953-04-13
Portable lighting device, especially for musical instruments
US2891473A
(en)
*
1957-01-07
1959-06-23
Time Inc
Inking mechanism
US3002451A
(en)
*
1959-10-05
1961-10-03
Ghormley Engineering And Mfg C
Ink distributing means for printing press
US3590735A
(en)
*
1969-08-26
1971-07-06
Harris Intertype Corp
Ductor roll accelerating mechanism
US3688696A
(en)
*
1970-05-08
1972-09-05
Harris Intertype Corp
Motorized ductor roll
US3698313A
(en)
*
1970-06-25
1972-10-17
North American Rockwell
Means for oscillating and silencing a ductor roller in a printing press
GB1366228A
(en)
*
1972-01-26
1974-09-11
Strachan & Henshaw Ltd
Ink feed alternating current generators
DE2222581B1
(en)
*
1972-05-09
1973-11-15
Heidelberger Druckmasch Ag
INKING UNIT FOR OFFSET ROTARY MACHINES
DD120154A1
(en)
*
1975-05-05
1976-06-05
1977
1977-03-11
DD
DD19779477A
patent/DD132253A1/en
unknown
1977-12-21
FR
FR7738677A
patent/FR2383017A1/en
active
Granted
1978
1978-02-28
SU
SU787770116A
patent/SU943013A1/en
active
1978-03-01
DE
DE19782808856
patent/DE2808856C2/en
not_active
Expired
1978-03-09
GB
GB935378A
patent/GB1565766A/en
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2233281A
(en)
*
1989-06-22
1991-01-09
Polygraph Leipzig
Inking mechanism for a rotary printing machine
GB2233281B
(en)
*
1989-06-22
1993-06-16
Polygraph Leipzig
Inking mechanism for a rotary printing machine
Also Published As
Publication number
Publication date
DD132253A1
(en)
1978-09-13
FR2383017A1
(en)
1978-10-06
DE2808856A1
(en)
1978-09-14
FR2383017B1
(en)
1984-06-22
SU943013A1
(en)
1982-07-15
DE2808856C2
(en)
1984-04-05
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Legal Events
Date
Code
Title
Description
1980-07-30
PS
Patent sealed
1989-11-08
PCNP
Patent ceased through non-payment of renewal fee
