EP0802054B1 - Verfahren und Vorrichtung zum Bedrucken von selbsttragenden Einzelobjekten - Google Patents

Verfahren und Vorrichtung zum Bedrucken von selbsttragenden Einzelobjekten Download PDF

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Publication number
EP0802054B1
EP0802054B1 EP97103616A EP97103616A EP0802054B1 EP 0802054 B1 EP0802054 B1 EP 0802054B1 EP 97103616 A EP97103616 A EP 97103616A EP 97103616 A EP97103616 A EP 97103616A EP 0802054 B1 EP0802054 B1 EP 0802054B1
Authority
EP
European Patent Office
Prior art keywords
printing
article
print image
individual print
individual
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 - Lifetime
Application number
EP97103616A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0802054A3 (de
EP0802054A2 (de
Inventor
Hans-Dieter Niestrath
Norbert Rohwetter
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.)
Werner Kammann Maschinenfabrik GmbH and Co KG
Original Assignee
Werner Kammann Maschinenfabrik GmbH and Co KG
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.)
Filing date
Publication date
Application filed by Werner Kammann Maschinenfabrik GmbH and Co KG filed Critical Werner Kammann Maschinenfabrik GmbH and Co KG
Publication of EP0802054A2 publication Critical patent/EP0802054A2/de
Publication of EP0802054A3 publication Critical patent/EP0802054A3/de
Application granted granted Critical
Publication of EP0802054B1 publication Critical patent/EP0802054B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0863—Machines with a plurality of flat screens mounted on a turntable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/10—Machines for multicolour printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/10—Screen printing machines characterised by their constructional features
    • B41P2215/11—Registering devices
    • B41P2215/112—Registering devices with means for displacing the frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/50—Screen printing machines for particular purposes
    • B41P2215/55—Screen printing machines for particular purposes for printing compact discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/50—Printing presses for particular purposes
    • B41P2217/55—Printing presses for particular purposes for printing compact discs

Definitions

  • the invention relates to a method and an apparatus for Printing of self-supporting single objects, in particular such objects, the extent of which is perpendicular to the at least one an area to be printed generally relative is small. It can be z.
  • the changeover requires the setting of the printing units on the print image of each the following lots, which are very well trained in today's machines Operating personnel if a printed image with good Quality should be made. The requirements the quality of the printed image is getting bigger.
  • EP 0488092 B1 describes a screen printing machine for printing on web-like material is known, in which on the web-shaped Material attached registration marks monitored by a camera become.
  • the screen printing stencils are adjustable and also equipped with servomotors that have a Calculator depending on those detected by the camera Positions of the registration marks are controllable.
  • the setting the screen printing stencils depending on the position of registration marks on the printed matter is of no importance falling relief when converting printing presses to Episode.
  • the quality that can be achieved does not match the requirements common in many cases today.
  • WO 95/00336 discloses a method and a device for Control or regulation of operations of a printing technology Machine in which this consists of two individual print images existing overall print image by an image recording device recorded and used to obtain actual values is used to register deviations determine that then by appropriate Control or regulation of a register setting device used become.
  • the invention is therefore based on the object of a method according to the preamble of claim 1 and a device according to the preamble of claim 9 or 11 modify that a quick changeover, as far as possible should be done automatically, is possible and also a good one Quality of the generally multicolored printed image achieved can be.
  • a major advantage of the invention is that it the printed image and thus the immediate result of the printing process recorded and this result as a benchmark for the assessment of quality used, the latter essentially is determined by the fact that the individual print images on the object are correctly positioned and therefore all individual print images complement each other in an optimal way to the overall print image.
  • the screen printing stencils required for the new lot in the usual way so far, essentially manually, roughly align. The time required for this is proportional low.
  • the fine alignment i.e. the exact coordination of the individual screen printing stencils on the object and so that the individual print images to each other is done automatically, namely about the capture of the print image by the camera system and the comparison of the determined actual print image or the position of the same with the stored target print image.
  • the creation of the target print image or the storage of the same poses no difficulty. So it is possible one after the other enter the individual print images into the computer, the also combined into the resulting overall print image can be.
  • the individual print images can, for example, in Form of the usual slides are present on the screen printing stencil are to be transferred. These slides can be recorded individually by the camera, whereby only ensured via existing registration marks or the like must be that when recording each slide a defined one Takes position. But it is also easily possible the individual print images in the form of digital data below Using a floppy disk or the like in the memory of the computer to enter.
  • the The actual position of the individual print image from the target position is not the position of the printing unit, but that of the following object for carrying out the printing process accordingly to change.
  • screen printing method it would also be possible when using screen printing method.
  • Target position After adjusting the actual position of each individual print image to it Target position can be printed on the following objects without further ongoing comparison between the actual position and Target position are carried out. This will generally be easily possible when printing small batch sizes, since the risk that the actual position of the changes one or another single print image, proportionately is low.
  • the camera systems available today for monitoring of printed images are able to differentiate colors and thus when capturing the overall print image that results from composed of several individual print images, each a specific one Select single print image, which then with the the target print image assigned to it can be compared in the computer can.
  • Such camera systems "resolving" the overall print image are particularly useful for monitoring ongoing production Suitable because they allow only one camera, which then only takes the overall print image to get by.
  • the basic frame of the device shown in Fig. 1 carries a circular ring-shaped table 12 around a vertical axis is gradually rotatable and for holding and Transporting the individual objects to be printed 14 serves at which in this case are CDs.
  • the transport table 12 is provided with brackets 16 which are coaxial with Drive shaft of the table 12 arranged close to the periphery thereof are.
  • the individual objects to be printed are accordingly along a circular transport path towards of the arrow 18 from a pick-up station I to a pick-up station VI transported between which the treatment stations are located.
  • the objects to be printed are marked by known devices associated with table 12 and are not related to the invention, in each in the receiving station I holder 16 inserted.
  • the removal station VI that which is located there in each case printed object using a also not removal device shown removed from the holders.
  • the device is equipped with four screen printing units 20, 21, 22, 23 provided, of which only the template frame in Fig. 1 26 and the screen printing stencil carried by it 27 are shown.
  • FIGS. 5-10 A currently preferred embodiment of a screen printing unit is shown schematically on a larger scale in FIGS. 5-10.
  • the screen printing stencil 27 and squeegee head 32 Printing unit is on two columns 25 of the machine frame 10 guided up and down movable. 5 in particular shows that the printing unit has an upwardly extending vertical Plate 29 which is connected to the machine frame and carries at its upper end a console 30 on which a support rod 31 for the doctor head 32 horizontally displaceable is stored.
  • the support rod 31 is by four Rollers 33 held and guided with an approximately V-shaped profiled lateral surface are provided and with corresponding side limits of the handrail interact.
  • the Back and forth movements of the support rod 31 and thus the doctor head 32 are driven by a suitable Gear 34 causes which meshes with a rack 35, the firmly connected to the top of the support rod 31 is.
  • first carriage 38 On the underside of the console 30 are two guide rails 36 attached, the V-shaped on their facing sides Cutouts are provided.
  • profiled strips 37 which are carried by a first carriage 38.
  • the latter is in the direction of the X axis, i.e. perpendicular to the image plane of FIG. 5, adjustable by a first servomotor 39, the Spindle 40 is fixedly connected to the first carriage 38.
  • the first actuator 39 is supported by a plate 41 which is firmly connected to the frame 10 of the device.
  • the first carriage 38 carries two guide rails on its underside 42, which correspond to the guide rails 36 are profiled and serve to guide two strips 43, which are profiled according to the strips 37.
  • the last 43 are carried by a second carriage 44, which in Direction of the Y axis, that is, in relation to the circular one Transport path of the machine according to FIG. 1, radially within the Guide rails 42 can be pushed back and forth and thus adjustable is.
  • the spindle 46 on first carriage 38 is attached.
  • the first servomotor 39 effected displacement of the first carriage 38 takes place essentially transverse to the longitudinal course of the spindle 46 of the second servomotor 45. This spindle 46 is on the first carriage 38 attached.
  • the second carriage 44 carries two guide rails on the underside 47, corresponding to the guide rails 36 and 42 for first and second carriages 38 and 44 are profiled, however, they run in a circular arc.
  • a third carriage 48 is guided, the lateral limits according to the profile of the guide rails 47 are V-shaped in cross section.
  • the third carriage 48 At the bottom of the third carriage 48 there is essentially one horizontally cantilevered support member 49 fixed, which carries the screen frame 26.
  • the arrangement is made so that the radius of the two guide rails 47th formed arcuate third guide through the center of the screen goes through.
  • the connection is between cantilevered support member 49 for the screen frame 26 and the third carriage 48 form-fitting, so that a Movement of the screen frame 26 relative to the third slide 48 not possible.
  • the setting of the third carriage 48 relative to it second carriage 44 is carried by a third Actuator 51 which is attached to the second carriage 44 and whose spindle 52 has a pin 53 at its free end connected is.
  • the latter can be rotated about a vertical axis in a rear extension 54 of the projecting bracket 49 stored for the screen frame 26.
  • the rotatable bearing is required because the adjustment of the third slide takes place along a circular arc section.
  • a swivel Attaching the third servomotor 51 to the second carriage 44 is not necessary because of the extent of the adjustment is very small, is a maximum of a few mm, and thus the amount of displacement which the pin 53 at one Adjustment of the third slide 48 experiences accordingly is small and in the area of elastic deformability Spindle 52 is.
  • the frame 26 with the screen printing stencil 27 located therein corresponding to the respective requirements in the directions of arrows 77, 78; 92, 93; 52, 55, i.e. linear in two perpendicular to each other standing directions and additionally by means of a Swivel movement.
  • doctor head 32 Since the doctor head 32 is carried by the console 30, the with is connected to the base frame 10 of the machine, the doctor head takes 32 to those that take place essentially in the horizontal plane Adjustment movements of the screen printing stencil not part.
  • the removal station VI is assigned a camera system such that that the object with the overall print image before it out the holder is removed, captured by the camera 58 becomes. It is of course also possible for the camera system to provide a special station in the direction of rotation 18 of the Plates 12 is arranged in front of the removal station VI, if this is necessary for reasons of space requirements, for example should be.
  • Figure 2 shows that the output of the Camera system connected to a computer 62 via a line 60 to which a screen 64 is assigned, on which the respective printed image can be visually displayed can. In the computer 62 the actual position of the camera 58 recorded print image with the one stored in the computer Target position of this print image compared.
  • each individual print images to be applied can enter the computer's memory in such a way that the slides corresponding to the individual print images 68 placed on a light table or the like. 69 and are recorded successively by a camera 70, the each positive on the light table 69 in a defined Is oriented towards the camera so that all of the latter recorded target positions also in relation to each other are set.
  • the sequential single print images are fed to the computer 62 via lines 71, 72 and stored in it.
  • the intermediary Screen 74 is only used to record what is recorded Make single print images visible.
  • the respective slide can 68 After being captured by the camera 70, the respective slide can 68 then in the usual way to produce the respective Print image of the screen printing template 27 are used.
  • the initial setting of the screen printing stencils of the Printing units can have any one instead of objects corresponding replacement-shaped objects used if this is advantageous for cost reasons, so that the "real" objects are only then introduced into the device if all printing units are set correctly. It may also be advantageous for initial setting the screen printing stencils two or more printing processes perform, the template gradually, so after each printing process to a certain extent, from the actual position is brought into the target position. Whether for this initial setting requires several adjustment steps are, can also depend on the size of the difference between the actual position and target position depend.
  • FIG. 11 to 14 is a device for printing on flat individual objects such as credit cards, phone cards or the like.
  • Such cards have a thickness of z. B. 0.6 mm. They are printed using the offset printing process, although it is not excluded that additional other printing processes, e.g. Screen printing, for use come.
  • the offset printing process allows by application of a high resolution raster print the application of detailed print images in many colors and shades.
  • Figure 11 shows that the device is essentially one linear structure has such that the to be printed Objects at one end of the machine from a magazine facility 100 are fed and after passing through several printing stations and other treatment stations on the other end of a collecting device 102 and there the other Treatment or use. Because with this Performance example two objects in pairs by the Device is transported and treated (Fig. 13) the distance between the two devices 100 and 102 bridged by two parallel transport tracks 104, 106 which several successive different transport devices can have. For this and regarding Other features are referred to DE 19534827, whose Disclosure content is included in this application.
  • the device is provided with several offset printing stations, of which, in FIG. 11 of the drawing, stations I, II, III and IV are shown. This can be done in the printing station I applied a primer on the cards whereas at least in some of the following printing stations Single print images with specific colors and one certain patterns are applied and all individual print images complement each other to form an overall print image.
  • an impression cylinder 110 is arranged below the Impression cylinder 108, which the two cards printed in one operation supports during printing, which during the printing process between passed through the two cylinders 108 and 110 in the usual manner become.
  • the impression cylinder 108 is more common Way provided with a printing blanket 112, which is an ink application obtained from a plate cylinder 114 (FIG. 12).
  • the impression cylinder with at least one in provided essentially radially arranged stamp, the opposite the outer surface of the impression cylinder protrudes somewhat and during the printing of those that do not have the cavity Side of the card engages in this cavity.
  • each card 116 of the pair of cards to be printed simultaneously in the transport direction 118 through a pair of belts 120, 122 into an alignment station for the following printing process is transported.
  • a suction bar 124 is arranged, the one with suction openings 126 provided upper boundary surface 128 in a short distance below the level of the transporting Straps 120a, 120b; 122a, 122b.
  • the alignment station everyone of the two transport tracks 104, 106 is an alignment rail 130, 132 assigned to their respective pair of bands facing side carries a guide surface 134, 136.
  • This surface is V-shaped in cross section, like this 14 in particular.
  • the suction strips 124 end in the direction of transport 118 just before the transverse to the direction of transport 118 running plane, in which the guide rails 130, 132 begin.
  • the guide rails each arranged on the outside, i.e. on the side of a pair of belts 120 or 122, which turned away from the other pair of belts is.
  • the pairs of belts 120, 122 end approximately at half the length of the associated guide rails 130 and 132, respectively.
  • Each of the two guide rails 130, 132 is on a mounting rail 138 attached, parallel to the corresponding Guide rail runs and on the machine frame 140 by one vertical axis 142 is pivotally attached.
  • the pivot axis 142 thus runs essentially perpendicular to the main plane of the cards in the transport path 104 or 106 116.
  • Each mounting rail 138 is two servomotors 144, 146 assigned such that the axis of rotation 142 between the two servomotors or the spindles 148, 150 of the same, which are connected to the respective mounting rail 138.
  • each transport track 104, 106 is a double-armed guide finger 152, 154 is provided, which is parallel to the axis 142, vertical axis 156 is pivotable. Every leader finger 152, 154 is on one arm with one on each assigned card 116 provided directed extension 158, which, as can be seen in particular in FIG. 14, likewise provided with a V-shaped guide surface 160 is. The other arm of each guide finger 152, 154 becomes acted upon by a spring 162 such that the arm with the Guide surface 160 against a longitudinal edge of the respectively assigned Card 116 is pressed, as shown in particular in FIG. 13 reveals.
  • the transport device 164 is with two levers controlled by a cam disc 170 172, 174 and a parallelogram carrying the carriers 166, 168 176 provided.
  • cam 170 When driven by cam 170 essentially carry the reciprocating movements in transport direction 118 and opposite to it and downward and upward movements, whereby the drivers when moving against the transport direction 118 below the level of the on belt pairs 120, 122 lying cards 116.
  • Carriers 166, 168 In the top position of the Carriers 166, 168 are located between each two timing belts 120a, 120b and 122a, 122b.
  • Fig. 11 shows that the printed objects before leaving the Device go through a control station V, with a camera system not shown in detail and the other in Provided in connection with Fig. 2 described devices is a comparison of the actual print image or the actual position the same with the target print image or the target position enable the same.
  • the computer of this station V is via lines 184 to those in the individual printing stations associated positioning stations, the servomotors can be designed as conventional stepper motors connected.
  • the two transported towards the printing station Cards 116 are so through the respective pair of belts 120, 122 moved far in the direction of transport 118 that its rear boundary edge 186 behind each in the direction of transport Suction bar 124 is located and thus the driver 166 bw. 168 at the end of its movement against the transport direction 118 moving upward behind the respective card 116 can grab this in his subsequent move in the upper position shown in Figs. 12 and 13 in Advance transport direction 118 in the direction of the printing unit.
  • the card is assigned by the respective one Belt pair 120 or 122 transported so far that the front edge 178 is approximately in the area of the associated Guide finger 152, 154 is located.
  • the die Carriers 166, 168 carrying transport device 164 always executes the same movements as through curves 170 are set by positioning the Driver 166 or 168 by the respective actuator also the position of the map 116 can be set which this is relative to the circumference of the printing cylinder 108 or to it located blanket 112 occupies.
  • a particular orientation of the card 116 with respect to it Elevation is not necessary because of the V-shaped Design of the guide surfaces on the guide rail and thus cooperating guide finger in any case in the card Deepest of the V-shaped recess of both parts is held.
  • the positive connection between card and guide caused by the latter also prevents under the influence of the Driver 166 or 168 forces exerted on the light card the card can make an uncontrolled movement.
  • Guide rail and cooperating leadership fingers is a forced operation, which is effective until the card from Printing unit, ie the two rollers 108, 110 detected and from the guidance formed by the guide rail and guide finger is pulled out.
  • the driver therefore needs 166, 168 in Transport direction 118 to perform only one stroke, which is about the Half of the length of the card 116 corresponds to the transport direction.
  • the basic setting of the printing unit may be chosen so that the arrangement of the printed image on the printing blanket 112 of the printing cylinder 108 is slightly inclined the guide rail 130 or 132 requires such that the distance of the guide rail in the horizontal plane from the Center axis of the transport track 104 or 106 in the transport direction 118 increases slightly. 13 would this means that the distance between the two guide rails 130, 132 or the guide surfaces 134, 136 in the transport direction 118 increases slightly. This ensures that after transportation by the respective carrier 166 or 168 and thereby the alignment of the card 116 in any case maintains its position when it is through the two Rollers 108, 110 of the printing unit from the guide rail and guide finger formed guide is pulled out.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Screen Printers (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Record Information Processing For Printing (AREA)
EP97103616A 1996-04-15 1997-03-05 Verfahren und Vorrichtung zum Bedrucken von selbsttragenden Einzelobjekten Expired - Lifetime EP0802054B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19614740 1996-04-15
DE19614740A DE19614740A1 (de) 1996-04-15 1996-04-15 Verfahren und Vorrichtung zum Bedrucken von selbsttragenden Einzelobjekten

Publications (3)

Publication Number Publication Date
EP0802054A2 EP0802054A2 (de) 1997-10-22
EP0802054A3 EP0802054A3 (de) 1998-03-11
EP0802054B1 true EP0802054B1 (de) 2001-05-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103616A Expired - Lifetime EP0802054B1 (de) 1996-04-15 1997-03-05 Verfahren und Vorrichtung zum Bedrucken von selbsttragenden Einzelobjekten

Country Status (4)

Country Link
US (1) US5899143A (zh)
EP (1) EP0802054B1 (zh)
CN (1) CN1112289C (zh)
DE (2) DE19614740A1 (zh)

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DE4401900C2 (de) * 1994-01-24 1998-07-09 Heidelberger Druckmasch Ag Verfahren zur Steuerung einer Druckbildlage auf einem Bogen in einer Bogendruckmaschine
US5591773A (en) * 1994-03-14 1997-01-07 The Trustees Of Columbia University In The City Of New York Inhibition of cataract formation, diseases resulting from oxidative stress, and HIV replication by caffeic acid esters
DE4432371B4 (de) * 1994-09-12 2004-12-09 Heidelberger Druckmaschinen Ag Verfahren zum Drucken und Weiterverarbeiten von Nutzen
CN1235353C (zh) * 2001-03-16 2006-01-04 三菱电机株式会社 便携信息终端、无线通信系统和链接确立方法

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DE59703532D1 (de) 2001-06-21
EP0802054A3 (de) 1998-03-11
CN1112289C (zh) 2003-06-25
US5899143A (en) 1999-05-04
DE19614740A1 (de) 1997-10-16
CN1168319A (zh) 1997-12-24
EP0802054A2 (de) 1997-10-22

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