EP0683729A1 - Process for controlling a cylinder-type silk screen printing machine. - Google Patents
Process for controlling a cylinder-type silk screen printing machine.Info
- Publication number
- EP0683729A1 EP0683729A1 EP94904948A EP94904948A EP0683729A1 EP 0683729 A1 EP0683729 A1 EP 0683729A1 EP 94904948 A EP94904948 A EP 94904948A EP 94904948 A EP94904948 A EP 94904948A EP 0683729 A1 EP0683729 A1 EP 0683729A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- carriage
- screen
- printing cylinder
- cylinder
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/0804—Machines for printing sheets
- B41F15/0813—Machines for printing sheets with flat screens
- B41F15/0827—Machines for printing sheets with flat screens with a stationary squeegee and a moving screen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
Definitions
- the invention relates to a method for controlling a screen printing cylinder machine, wherein during the printing process a printing cylinder receiving the printing material and driven by a drive motor and a screening carriage traveling over it are moved with synchronized speed with the squeegee lowered onto the screen stencil.
- the invention further relates to a screen printing cylinder machine with a printing cylinder receiving the printing material and driven by a drive motor, a screen trolley traveling over it, a printing squeegee which can be lowered onto the screen stencil and a device for synchronizing the movement of the printing cylinder and the screen frame during the printing process the method described above works.
- the first method makes use of a so-called oscillating cylinder, which has a single toothed wheel on each end face, which is permanently in engagement with the toothed rack attached to the corresponding side of the screening carriage. After the printing process, the cylinder reverses into the starting position in which it receives the next print item, the printing process immediately beginning again.
- a disadvantage of this method is that the oscillating cylinder changes from a rotary movement into the opposite direction without a rest, so that the newly fed printing material must be grasped by the printing cylinder immediately. It happens that the print material is not placed correctly or not optimally on the printing cylinder, which impairs the print quality.
- the second known method tries to avoid this disadvantage in that the synchronization between the printing cylinder and the screening carriage takes place during the forward and reverse travel via two gearwheels on each end face of the printing cylinder.
- the first gearwheel engages with the toothed rack arranged on the relevant side of the screening carriage during the printing process (advance).
- this toothed wheel and the toothed rack are decoupled by the teeth being cut out at the appropriate point on the toothed wheel by milling.
- the rack can run back freely through the stopped gear.
- the return of the screening carriage is effected by a second gear, which is brought into engagement with the toothed rack arranged on the relevant side of the screening carriage during the return. During the return, the first gear is held in place by mechanical means.
- the first gear After returning, the first gear is rotated again and brought into engagement with the rack of the screening carriage, whereby a new printing process begins.
- the two gears are driven by a drive motor. Since the printing cylinder coupled to the first gearwheel always rotates in the same direction and stops during the return of the screening carriage, the printed matter can be applied to the printing cylinder for a sufficient period of time with a corresponding printing speed.
- a disadvantage of the second method is the technically very complex mechanical synchronization of the two gears. This also leads to a correspondingly high one Repair requirement and relatively frequent maintenance of the screen printing cylinder machine.
- the printing speed is restricted by the mechanics. Every increase in the printing speed also leads to a reduction in the downtime of the printing cylinder during the return of the screen carriage, which impairs the exact application of the printing material to the printing cylinder. Overall, the economy of the two methods is very unsatisfactory due to the disadvantages described.
- the present invention has for its object to provide a method for controlling a screen printing cylinder machine, which is characterized by a high print quality and great economy by simple technical means and high printing speeds. It is a further object of the present invention to provide a corresponding screen printing cylinder machine with the advantages mentioned above.
- the printing cylinder and the screening carriage are driven independently of one another and the drive motor of the screening carriage is decoupled from the movement of the screening carriage synchronized with the printing cylinder during the printing process and then the screening carriage during the return drives, whereby the pressure cylinder is brought to a standstill before the end of the return.
- the drive motor of the screening carriage is brought to a standstill during the printing process and the drive motor of the printing cylinder before the return of the screening carriage has ended.
- the drive motor of the printing cylinder which is at a standstill before the return has ended, holds the printing cylinder in this position during this time in which the printing material is applied.
- the printing cylinder and the screen carriage are driven independently of one another, data for setting the printing path and the printing speed are programmed into an electronic control device, stored therein and processed into control signals for the drives and the The respective movement positions of the printing cylinder and of the screen carriage during the printing process are determined by position measuring systems and further processed in the electronic control device for regulating the control signals.
- the above-mentioned advantages are also achieved with this method according to the invention.
- the printing path covered by the screen carriage during the printing process corresponds to a full rotation of the printing cylinder and is adapted to a maximum format size of the printed matter. Therefore, the printing medium is spread out over the entire screen area corresponding to the maximum printing format by the flood doctor blade. The one in the spread the evaporation of the printing medium on the screen surface of the solvents contained in the printing medium leads to environmental pollution.
- the printing squeegees and the flood squeegees are also controlled as a function of the moving position of the screening carriage. This enables a more precise and simple control of the doctoring point of application, regardless of the printing speed.
- the method according to the invention offers the greatest possible flexibility with regard to the printing process.
- a screen printing cylinder machine of the type mentioned at the outset it is provided according to the first solution that two mutually independent drive motors for driving the printing cylinder during the printing process and for driving the screening carriage during the return, a device with which the drive motor of the screening carriage during the printing process (advance of Screening carriage) can be decoupled from the movement of the screening carriage which is synchronized with the printing cylinder, and a device can be used with which the printing cylinder can be brought to a standstill before the return of the screening carriage has ended.
- the drive motor of the screen carriage is coupled to it via a freewheel which decouples the drive motor from the screen carriage in the direction of rotation of the motor shaft, which corresponds to the advance of the screen carriage during the printing process, and the drive motor of the printing cylinder to it coupled to a freewheel which decouples the drive motor from the pressure cylinder in the direction of rotation of the motor shaft, which corresponds to the return of the screening carriage.
- the first freewheel can e.g. located on the hub of the drive motor of the screening carriage and designed as an industrial freewheel. Particularly when, as a device for synchronizing the movement of the printing cylinder and the screening carriage, one on each end face of the printing cylinder
- a screen printing machine of the type mentioned at the outset that two mutually independent drive motors are provided for the printing cylinder and the screening carriage and an electronic control device which has an input unit for data for setting the printing path and the printing speed, an associated programmable computer unit for processing the data in control signals for the drive motors and two control units assigned to the drive motors, which are connected to position measuring systems for the pressure cylinder and the screening carriage.
- rotary pulse encoders are provided as position measuring systems, which are arranged on the pressure cylinder or a drive wheel for the screening carriage.
- glass measuring rods can also be used instead of the rotary pulse encoder.
- any other suitable position measuring system can be considered.
- Fig. 1 is a schematic representation of a screen printing machine
- FIG. 2 shows a schematic illustration of an electronic control device for the screen printing cylinder machine shown in FIG. 1.
- the screen printing cylinder machine shown schematically there essentially consists of a printing cylinder 1 receiving the material to be printed, a screen carriage 2 traveling over it, a squeegee 3 which can be lowered onto the screen stencil and which is raised in the return shown in FIG. 1 is, and a flood knife 4 lowered during the return.
- the pressure cylinder 1 is connected to a drive 7 via a coaxial belt pulley 5 connected to it and a toothed belt 6.
- the pulley 5 has a coaxial rotary pulse generator, which serves as a path measuring system 8 for the arc angle of the printing cylinder which has been traveled from the initial position.
- the sieve carriage 2 runs, reversibly moved by a toothed belt 9, over the pressure cylinder 1.
- the toothed belt 9 is driven in its reversing movement by a drive wheel 10 and runs via a pulley 11.
- the drive wheel 10 has a coaxial rotary pulse generator, which as Position measuring system 12 is used for the distance covered by the screening carriage 2 from the starting position.
- the electronic control device for the screen printing cylinder machine shown in FIG. 1 essentially consists of a memory-programmable computing unit 13 with an input unit 14 and in each case one control unit 15 and 16 for the drive motor 17 of the printing cylinder 1 or drive motor 18 of the screening carriage 2.
- the two drive motors 17 and 18 are controlled as follows:
- the data for the print path and the print speed are read into the computing unit 13 via a keyboard and stored therein.
- the computing unit 13 processes the data into control signals for the drive motors 17 and 18.
- the control signals are fed to the corresponding control units 15 and 16, where they are converted into the corresponding currents and voltages for the drive motors 17 and 18.
- the printing cylinder 1 and the screen carriage 2 are at rest.
- the squeegees 3 and 4 are raised.
- the printing material not shown in the drawing, is placed on the printing cylinder 1.
- the squeegee 3 is lowered onto the screen template of the screen carriage 2, not shown in the drawing.
- the two position measuring systems 8 and 12 transmit the respective movement positions of the printing cylinder 1 and the screening carriage
- control unit 15 and 16 The movement positions are compared in the control units 15 and 16 with the control signals defining the pressure path. If the movement positions correspond to the relevant control signals, a signal is sent from the respective control unit 15 or 16 to the Computing unit 13 transmits, which then outputs a control signal for stopping printing cylinder 1 or screen carriage 2 to control unit 15 or 16.
- the printing process is ended in that the screen carriage 2 stops after reaching the printing path programmed into the computing unit 13 and the printing squeegee 3 is moved upwards.
- the printing cylinder 1 runs in the same direction of rotation until it reaches the starting position.
- the flood doctor 4 is lowered onto the screen template of the screen carriage 2.
- the screen carriage 2 returns immediately after the printing process, it is moved back to the starting position and stopped by a corresponding control signal.
- the flood knife 4 is moved up after stopping.
- the printing process is completed and the next print item is placed on the printing cylinder 1. The printing process then starts again.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Screen Printers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4304399 | 1993-02-13 | ||
DE4304399A DE4304399A1 (en) | 1993-02-13 | 1993-02-13 | Process for controlling a screen printing cylinder machine |
PCT/DE1994/000043 WO1994018008A1 (en) | 1993-02-13 | 1994-01-19 | Process for controlling a cylinder-type silk screen printing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0683729A1 true EP0683729A1 (en) | 1995-11-29 |
EP0683729B1 EP0683729B1 (en) | 1996-09-11 |
Family
ID=6480410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94904948A Expired - Lifetime EP0683729B1 (en) | 1993-02-13 | 1994-01-19 | Process for controlling a cylinder-type silk screen printing machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US5706722A (en) |
EP (1) | EP0683729B1 (en) |
DE (2) | DE4304399A1 (en) |
ES (1) | ES2093518T3 (en) |
WO (1) | WO1994018008A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4444189C2 (en) * | 1994-08-12 | 1999-09-09 | Leipold Xaver F Gmbh & Co Kg | Screen or screen printing machine |
JPH10507696A (en) * | 1994-08-12 | 1998-07-28 | エフ キサフェル ライポルト ゲーエムベーハー ウント コンパニー コマンディトゲゼルシャフト | Stencil or screen printing machine |
DE19703312A1 (en) * | 1997-01-30 | 1998-08-06 | Rk Siebdrucktechnik Gmbh | Process for controlling a screen printing cylinder machine |
US6397742B1 (en) * | 1999-09-30 | 2002-06-04 | Becmar Corporation | Single plane screen printer |
WO2009067779A1 (en) * | 2007-11-30 | 2009-06-04 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Natural Resources Canada | Vapour phase esterification of free fatty acids |
TWI556977B (en) * | 2014-08-21 | 2016-11-11 | Atma Champ Entpr Corp | Servo Drive Roller Screen Printing Machine |
US9352546B2 (en) * | 2014-08-21 | 2016-05-31 | Atma Champ Ent. Corp. | Servo-driven cylinder screen printing machine |
EP2990203B1 (en) * | 2014-08-25 | 2018-08-08 | ATMA Champ Ent. Corp. | Servo-driven screen printing machine. |
CN105437738B (en) * | 2014-08-26 | 2018-02-23 | 东远机械工业(昆山)有限公司 | Servo-drive drum-type screen printer |
US10173413B2 (en) * | 2016-12-12 | 2019-01-08 | Atma Champ Enterprise Corporation | Rotary printing machine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT956921B (en) * | 1972-06-28 | 1973-10-10 | Brasa Umberto | SYSTEM FOR THE AUTOMATIC REGISTRATION OF PAPER TAPE ON CYLINDER IN SERIGRAPHY PRINTING IN MULTI COLOR PARTS |
DE3730409A1 (en) * | 1987-09-10 | 1989-03-23 | Balsfulland Gmbh Maschf Geb | Screen printing machine |
DE3915482C2 (en) * | 1989-05-11 | 1995-01-26 | Stork Mbk Gmbh | Device for angularly synchronous driving of individual printing cylinders of a rotary printing press |
DE4012573A1 (en) * | 1990-04-20 | 1991-10-24 | Gerd Quast | SCREEN PRINTING PLANT |
JP2506222B2 (en) * | 1990-06-26 | 1996-06-12 | 桜精機株式会社 | Plate frame moving device for cylinder screen printing machine |
NL9101176A (en) * | 1991-07-05 | 1993-02-01 | Stork Brabant Bv | SCREENPRINTING DEVICE WITH CONTINUOUS REPORTING OF ROTARY TEMPLATES. |
-
1993
- 1993-02-13 DE DE4304399A patent/DE4304399A1/en not_active Withdrawn
-
1994
- 1994-01-19 WO PCT/DE1994/000043 patent/WO1994018008A1/en active IP Right Grant
- 1994-01-19 US US08/507,220 patent/US5706722A/en not_active Expired - Fee Related
- 1994-01-19 ES ES94904948T patent/ES2093518T3/en not_active Expired - Lifetime
- 1994-01-19 DE DE59400641T patent/DE59400641D1/en not_active Expired - Fee Related
- 1994-01-19 EP EP94904948A patent/EP0683729B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9418008A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4304399A1 (en) | 1994-08-18 |
EP0683729B1 (en) | 1996-09-11 |
ES2093518T3 (en) | 1996-12-16 |
DE59400641D1 (en) | 1996-10-17 |
WO1994018008A1 (en) | 1994-08-18 |
US5706722A (en) | 1998-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3744979C2 (en) | Ink containers for silk screen printing machine | |
EP0544176B1 (en) | Multicolour pad printing machine | |
DE3742129A1 (en) | PRINTING MACHINE | |
DE19636987C2 (en) | Diagnostic device for a rotary printing press | |
DE4037678A1 (en) | SCREEN PRINTING MACHINE | |
EP0683729B1 (en) | Process for controlling a cylinder-type silk screen printing machine | |
DE2402836C2 (en) | Screen printing device with at least two printing stations | |
EP0135618B1 (en) | Screen printer | |
DE4444189C2 (en) | Screen or screen printing machine | |
DE4307733A1 (en) | Printing machine with interchangeable printing heads - enables second head to be prepared for printing whilst first head is in use | |
DE3317981C2 (en) | Printing unit for packaging printing | |
DE3344131C2 (en) | Flexographic printing unit for packaging printing | |
DE4436102C2 (en) | Device for the controlled transfer of printing ink | |
EP0805024B1 (en) | Rotary screen printing machine for printing large images | |
DE1761394B1 (en) | INK UNIT FOR ROTARY PRINTING MACHINES | |
EP0775055B1 (en) | Screen or stencil printing machine | |
DE2610126A1 (en) | Drive mechanism for transfer roller in inking and damping system - cyclically adjusts circumferential roller speed to that of ductor and distribution rollers | |
EP0498012A1 (en) | Flexographic printing machine with auxilliary gear for switching between two driving modes | |
DE4314426A1 (en) | Method for setting the ink quantity in vibrator inking units of printing machines, in particular sheet-fed offset printing machines, and an appropriately designed vibrator inking unit | |
DE2312175B1 (en) | Register adjustment of the forme or plate cylinders on rotary printing machines with central cylinders | |
DE4012292A1 (en) | LIFTER MANUAL GEARBOXES ON COLORING UNITS OF PRINTING MACHINES | |
DE2046467B2 (en) | Device for regulating the drive of screen printing rollers | |
DE2747855C3 (en) | Switching device for adjusting ink body carriers on brush manufacturing machines | |
DE3206812A1 (en) | Ink feed-quantity processor for an inking unit | |
DE4127227A1 (en) | Textile printing - using intermittently advancing flat bed with automatic stencil location and magnetically coordinated scraper motion |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19950727 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19960430 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
REF | Corresponds to: |
Ref document number: 59400641 Country of ref document: DE Date of ref document: 19961017 |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO ROMA S.P.A. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19961021 |
|
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2093518 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20000719 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20000725 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20000728 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20001013 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010119 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010120 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20010119 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010928 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011101 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20020916 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050119 |