EP0003983B1 - Siebdruckverfahren und Vorrichtung zu dessen Durchführung - Google Patents

Siebdruckverfahren und Vorrichtung zu dessen Durchführung Download PDF

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Publication number
EP0003983B1
EP0003983B1 EP79100469A EP79100469A EP0003983B1 EP 0003983 B1 EP0003983 B1 EP 0003983B1 EP 79100469 A EP79100469 A EP 79100469A EP 79100469 A EP79100469 A EP 79100469A EP 0003983 B1 EP0003983 B1 EP 0003983B1
Authority
EP
European Patent Office
Prior art keywords
web
counter
screen printing
pressure roller
doctor
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
Application number
EP79100469A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0003983A1 (de
Inventor
Wilfried Kammann
Gerhard Tiemann
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 EP0003983A1 publication Critical patent/EP0003983A1/de
Application granted granted Critical
Publication of EP0003983B1 publication Critical patent/EP0003983B1/de
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
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0831—Machines for printing webs
    • B41F15/0845—Machines for printing webs with flat screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing

Definitions

  • the invention relates to a screen printing method and a device for batch-wise printing of a web-shaped product guided on a movable base with successive print images, in which the screen printing stencil is moved from an initial position into an end position relative to an associated doctor blade during the printing process in the running direction of the web-based product and the squeegee presses ink through the screen printing stencil onto the material, whereupon the screen printing stencil and squeegee are returned to their relative starting position and in which the continuous, web-shaped material is also guided over a counter-pressure roller arranged on the side of the screen printing stencil facing away from the squeegee and squeegee and counter-pressure roller are moved synchronously against the direction of movement of the web-shaped material or the screen printing stencil during the printing process.
  • FR-PS 1 486 968 does indeed disclose a screen printing method in which the web-shaped printed matter is fed to the printing unit at an acute angle and is led out of it. There is also a counter-pressure roller, which is wrapped on part of its circumference by the printed material, so that the web-shaped printed material is rolled on the screen printing stencil. Moving the web away from the screen printing stencil at an acute angle immediately after applying the printing results in a rapid separation of the stencil and the printed web. This favors the quality of the printed image. In the case of the method according to FR-PS 1 486 968, however, this is at the expense of the possibility of applying the printed images of a stencil to the continuously running web-like material without spacing or even overlapping, despite the batch-wise application of the printed images.
  • the invention has for its object to design the method and apparatus of the type described in the introduction so that on the one hand - as in the case of FR-OS 2 354 879 - printed images can also be applied on a continuously running web without spacing or even overlapping one another, but at the same time there should be the possibility of guiding the web in such a way that after application of the printed image, a perfect separation of the template and the web, which favors the quality of the printed image, takes place as quickly as possible.
  • the invention proposes that the section of the web-like material entering the printing unit via a deflecting roller into the printing unit and the section of the sheet-like material wrapping out of the printing unit from the counter-printing roller along part of its circumference at least in the region , within which the counter pressure roller is displaced during the printing stroke, run parallel to one another and at an acute angle to the essentially horizontally arranged screen printing stencil, and that the screen printing stencil, squeegee and counter pressure roller as well as the deflection roller have printing unit parallel to the ones at least during the printing stroke Sections of the web-shaped material rolled off on the stencil during the printing stroke are moved at an angle to the screen-printing stencil.
  • This procedure takes into account the fact that an inclined removal of the printed web section from the screen printing stencil and the counter-pressure roller when the latter is shifted during the printing process in the horizontal plane would result in a change in the web speed on the screen printing stencil, so that it is necessary for a good print image Synchronicity between the movement of the screen printing stencil on the one hand and the movement of the web on the other hand would not be guaranteed.
  • the invention takes this into account in that the movement of the counter-pressure roller and thus of the entire printing unit takes place parallel to the course of the web-like material, which the latter assumes between the guide elements which guide the web in front of and behind the printing unit.
  • the angle at which the two aforementioned web sections run is advantageously approximately 15 ° with respect to the horizontal or the screen printing stencil.
  • the above-described method can be carried out using a device which is provided with a screen printing stencil which can be moved back and forth with an adjustable stroke, a doctor blade and with a counter-pressure roller which is rotatably arranged on the side of the screen printing template which faces away from the doctor blade, with the doctor blade and counter-pressure roller running in opposite directions during the printing stroke are slidably arranged for screen printing stencil.
  • This device is advantageously designed in such a way that the counter-pressure roller is preceded by a deflection roller and the section of the web-shaped material running off the counter-pressure roller and that portion of the deflection roller which is tapered Section of the web-like material offset from one another, but parallel to one another at an acute angle to the horizontal, and that screen printing stencil and squeegee and counter-pressure roller with deflection roller during the printing stroke are displaceable along a path running parallel to the two sections of the web-like material.
  • This configuration enables the printing unit, in particular the counter-pressure roller, to be displaced during the printing stroke, without the web-like material experiencing a change in its running speed in the region of the screen printing stencil.
  • Doctor blade and counter-pressure roller and optionally deflection roller are expediently carried by a common slide which is guided on guide means which run parallel to the sections of the web-shaped material which run at an acute angle to the screen printing stencil.
  • the screen printing stencil can be carried by a second slide, which is arranged on the slide for squeegee and counter-pressure roller and can be pushed back and forth on guides parallel to the level of the screen printing stencil.
  • the slide for doctor blade and counter-pressure roller is advantageously provided with a cutout within which the guide means for the second slide are arranged.
  • An arrangement has proven to be particularly expedient in which at least two drive or guide rollers, each arranged at a distance from the printing unit, are provided for the web-like material and on which these rollers, as well as the counter-pressure roller and deflection roller, each have drive shafts which are arranged via a common flexible drive means, e.g. B. a chain, are connected to one another in terms of drive, the flexible drive means running parallel to the latter in the region in which it runs in the same direction as the web-like material.
  • a common flexible drive means e.g. B. a chain
  • the stroke of the screen printing stencil and / or that of the squeegee and counter-pressure roller and, if appropriate, the deflection roller can be adjustable.
  • a central drive can be provided for all movable parts of the device.
  • the running speed of the web-like material can be adapted to the speed of the screen printing stencil by means of an adjustable gear which is switched on in the drive transmission for the web-like material.
  • the means for transmitting the drive to the slide for the screen printing stencil and / or the slide for squeegee and counter-pressure roller can be adjusted or exchanged.
  • the device according to the invention can be designed in such a way that, in order to create a plurality of printing stations each having a printing unit, a corresponding number of identical devices follow one after the other, through which the web-like material can be passed in one operation.
  • the number of printing stations depends on the appearance of the resulting overall print image. If this z. B. consists of four different colors, it will normally be necessary to provide four printing stations.
  • two spars 12 are attached in a vertical plane, which are inclined at an angle of approximately 15 ° to the horizontal.
  • other guides and types of arrangement for example two bars next to one another, are also conceivable. It is also possible to provide only one spar or possibly more than two spars.
  • a first carriage 13 is guided so that it can be moved back and forth on the two spars 12.
  • the carriage is provided with eyes or the like 14, which encompass the spars. With the interposition of a cylinder-piston arrangement 15, it carries a doctor blade 16 and two rollers 17 and 18, both of which are driven.
  • the first carriage 13 is provided with two horizontal bars 19, which are arranged within a cutout 20 in the first carriage 13.
  • a second carriage 21 is guided to and fro on both spars 19 and carries a screen printing stencil 23 with the interposition of a cylinder-piston arrangement 22.
  • the arrangement is made in the usual way so that a sieve holder 24 is provided, on which the template 23 is attached adjustable in height.
  • the roller 17 serving as a counter-pressure roller is located directly below the template 23, so that the template fabric, which is slightly elastically deformable in the usual manner, is selected rend the printing process by the doctor blade 16 against the upper vertex of the counter-pressure roller and thus on the web-like print material 25 in the region of the upper vertex of the counter-pressure roller 17 is pressed.
  • the elastic deformability of the stencil fabric may make it possible to dispense with the cylinder-piston arrangement 22, so that the movement of the stencil fabric downwards with the aim of bringing it into contact with the web 25 and the opposite movement of the stencil fabric exclusively by the downward movement of the squeegee 16 or, in the case of upward movement of the squeegee, by the elastic resilience of the stencil fabric, ie using its elastic deformability.
  • the drive of the screen printing device is derived from a main drive shaft 26 which is driven by a motor 28 via a gear 27.
  • a disk 30 is fastened to the shaft 26, which is provided on its side facing the motor 28 with a cam 32, with which a cam roller, a cam or the like 34 cooperates, which or one at one end of a frame 11 at 36 mounted double-armed lever 38 is attached.
  • the second carriage 21 is provided with a vertical slot 40 into which a cam roller 44 or the like carried by the second arm 42 of the lever 38 engages. A pivoting of the lever 38 caused by the curve 32 thus results in a to-and-fro movement of the second slide 21.
  • the course of the curve 32 is selected such that the second carriage 21 and thus the stencil 23 move at a constant speed during the printing process, provided that the speed at which the web 25 is moved corresponds to that of the stencil 23 is adjusted during the pressure stroke.
  • the cam or the like. 44 is attached to the arm 42 in an adjustable manner in the longitudinal direction. With increasing distance of the cam roller 44 from the pivot point 36, the stroke and speed of the second slide 21 and thus the template 23 become greater. With the size of the stroke, the extent of the print image to be applied with a printing process in the longitudinal direction of the web 25 can also be increased.
  • the first carriage 13 is driven by an adjustable crank arm 46 which is rotatably mounted on the disk 30, but on the side facing away from the curve 32 at 48 and carries a curve roller or the like 50 at its free end, which in a in the main carriage 13 located slot 52 engages.
  • the latter runs perpendicular to the spars 12 and thus perpendicular to the path which the carriage 13 travels in the course of its back and forth movement.
  • the effective length of the crank arm between the bearing point 48 and the cam roller 50 can be adjusted, specifically by means of the corresponding adjustability of the bearing point 48 on the disk 30 which is continuously rotatable by the drive shaft 26.
  • a gear 56 is fastened on the drive shaft 26, which drives the drive gear 58 of a variable transmission 59 via a chain or the like 57 (FIG. 3), the output shaft 64 of which via gear 65, chains or the like 66, 68, 70 and co-operating gears 72, 74 and 76 a supply roll 78 from which the web 25 to be printed is unwound, a roll 80 on which the printed web 25 is wound and drives a drive roller 82 by means of which the web 25 is pulled out of the printing unit becomes.
  • the gears 87 and 89 are firmly connected to the shafts supporting the counter pressure roller 17 and the deflection roller 18.
  • the gear 85 is fixedly connected to a shaft carrying a drive roller 88, so that the chain or the like.
  • 86 drives the drive roller 88 as well as the counter-pressure roller 17 and the deflection roller 18.
  • a relative back and forth movement of the two rollers 17 and 18 in the direction of the arrows 67 and 69 thus inevitably has an adaptation of the peripheral speed of these two rollers to the relative speed at which the web 25 is applied during the back and forth movement of the rollers 17 and 18 the lateral surfaces of the two rollers moves, as a result.
  • the arrangement will be such that a slip clutch, not shown in the drawing, is arranged between the gear wheels 72 and 74 on the one hand and the two rollers 78 and 80 on the other hand, because the peripheral speeds of the rollers change as the winding or unwinding takes place 78 and 80 an exact setting of the respectively desired path speeds by the drives assigned to these two rollers is not possible anyway.
  • the speed of the web 25 between the two rollers 78 and 80 which must be adapted to the speed at which the screen printing stencil 23 moves during the printing stroke, is rather determined by the rollers 17, 18, 82 and 88.
  • FIGS. 4A to 4F The process of the printing process during a work cycle is shown in the diagram in FIGS. 4A to 4F.
  • the parts belonging to the printing unit that is to say screen printing stencil 23, squeegee 16, counter-pressure roller 17 and guide roller 18 and, moreover, first carriage 13 and the printing material 25 are shown in the diagram. 4A to 4F
  • reference lines AD with the same size are shown in the printing unit Distances allocated from one another, which make the extent of the movements of the parts of the printing unit, that is to say the carriage 13 with doctor blade 16 and rollers 17 and 18 on the one hand, and the screen printing stencil 23 on the other hand more recognizable.
  • a reference scale 63 is assigned to the web running off the counter-pressure roller 17 in order to illustrate the movement of the web 25
  • Fig.4A shows the position of the parts at the beginning of the work cycle.
  • Screen printing stencil 23 and squeegee 16 are lowered, so that the screen printing stencil 23 lies in the area of the upper vertex of the counter-pressure roller 17 against the 8ahn 25 guided around part of the circumference of the counter-pressure roller 17.
  • the squeegee 16 is shifted downward so that it deforms the template 23 somewhat downward until it abuts the web 25.
  • the carriage 13 with doctor 16 and the two rollers 17 and 18 assumes the left end position.
  • the carriage 13 is moved in the direction of the arrow 67 and the screen printing stencil 23 simultaneously in the direction of the arrow 62, that is to the left, both movements overlapping with respect to the screen printing stencil 23.
  • the length of a printed image in the direction of the longitudinal course of the web 25 should correspond to the length of the scale 63 (0-4).
  • the limits of the print image produced in the penultimate work cycle are identified by the two points 81 and 83.
  • the print image produced in the immediately preceding work cycle is in the region between point 83 and the upper vertex of the counter-pressure roller 17 and corresponds to the distance X in FIG. 4A.
  • Doctor blade 16 and associated counter-pressure roller 17 have moved from the starting position A (FIG. 4A) to the intermediate position B (FIG. 4B) in the course of the first phase of the printing process, both parts being moved counter to the running direction 68 of the web 25.
  • the template 23 is shifted in the opposite direction by a distance which corresponds to approximately half its total stroke, so that the longitudinal section Y of the web 25 printed during this working phase between the point 79 and the top vertex in the working position according to FIG. 4A the counter-pressure roller 17; ag, and now, d. H. in the position of the parts in FIG.
  • FIG. 4C shows the position of the parts at the end of the pressure stroke.
  • Squeegee 16 and stencil 23 have each been moved again approximately by the distance that lies between the working positions according to FIGS. 4A and 4B.
  • Doctor blade 16 with counter-pressure roller 17, which rotates in the direction of arrow 73 during the printing stroke, is located on line C.
  • the screen printing stencil 23 assumes its left end position.
  • the longitudinal section printed in the course of this pressure stroke is denoted by Z and corresponds to the distance 0-4 on the scale 63.
  • the web 25 has been advanced during this entire pressure stroke only by such a distance in the direction of arrow 68 that the triangle marked point 83 is now approximately at the mark 2 of the scale 63.
  • FIG. 4D shows the parts in the position corresponding to FIG. 4C, whereby, however, doctor blade 16 and screen printing stencil 23 are now lifted off web 25 in the direction of arrow 75.
  • the slide 13 then moves back in the direction of the arrow 69.
  • the slide 23 moves back relative to the slide 13.
  • FIG. 4E shows an intermediate position in the course of this stroke of the mutually interacting parts of the printing unit opposite the pressure stroke.
  • the speed at which the carriage 13 is moved back into its starting position in the direction of the arrow 69 is greater than the speed of the web 25 when the printed images are applied without a gap.
  • the resultant Advancement of the squeegee and counter-pressure roller has the consequence that when the parts have reached the position shown in FIG.
  • the length and speed of the strokes performed by the two slides 13 and 21 depend on the setting of the two cam rollers, cams or the like. 44 and 50 relative to the associated recesses 40 and 52.
  • the length of the screen printing stencil 23 and squeegee 16 with counter-pressure roller 17 strokes exerted during the printing process determine the length of the relative total stroke R (FIG. 4A) and thus the dimension of the printed image; n longitudinal direction of the web 25. It follows that when the printed image length changes, at least the stroke of the screen printing stencil 23 or the Carriage 21 must be adjusted accordingly, which in turn results in a change in the speed of the screen printing stencil during the printing process.
  • FIG. 5 shows a screen printing machine with three printing stations 201, 202, 203 and a station 204 in which the labels are punched out.
  • the web 225 to be printed is drawn off from a supply roll 278 and passed through the printing units 201 to 203 and then through the separation station 204 in a continuous run.
  • the base layer of the double-layer web 225 is wound up on a roll 294 after the separation process.
  • the remaining web that remains after the labels have been removed from the printed layer is rolled up on a supply roll.
  • the printing machine shown in Fig. Allows the application of three colors or other coatings.
  • the individual printing stations are designed as described in connection with FIGS. 1 and 2.
  • the individual parts of all printing stations in particular doctor blade 216 with counter-pressure roller and deflection roller 218 on the one hand and screen printing stencil 223 on the other hand, can be moved synchronously with one another, although this is not necessary. Rather, it is possible, for example, to carry out two pressure strokes in one station, while in another station only one pressure stroke is carried out at the same time, the sum of the length of the two pressure strokes in one station being equal to the length of one pressure stroke in the other station. Other combinations of the type are also conceivable.
  • the speed of the train is the same in all stations. However, for reasons of quiet machine operation, it will generally be expedient to have all movable parts run synchronously as far as possible.
  • Counter-pressure rollers 217 and deflection rollers 218 of all stations, guide rollers 282 and 288 as well as rollers between the stations, not shown in the drawing, are expediently driven by a common drive, so that the flexible transmission element 86 of FIG. 3 with all the gearwheels or the like ., the counter-pressure rollers 217 and the guide roller zen 218 of the printing stations and the separation stations are assigned, and the gears of the guide rollers is engaged.
  • the only decisive factor here is also that in the areas within which the counter-pressure rollers 217 and deflection rollers 218 of all stations are moved, the flexible transmission element runs parallel to the web 225, as was described in connection with FIG. 3.
  • each station 201 to 203 can devices, for. B. heat radiator, downstream, through which the applied printed images are dried.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
  • Screen Printers (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP79100469A 1978-03-11 1979-02-19 Siebdruckverfahren und Vorrichtung zu dessen Durchführung Expired EP0003983B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2810690 1978-03-11
DE19782810690 DE2810690A1 (de) 1978-03-11 1978-03-11 Siebdruckverfahren und vorrichtung zu dessen durchfuehrung

Publications (2)

Publication Number Publication Date
EP0003983A1 EP0003983A1 (de) 1979-09-19
EP0003983B1 true EP0003983B1 (de) 1982-05-12

Family

ID=6034209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100469A Expired EP0003983B1 (de) 1978-03-11 1979-02-19 Siebdruckverfahren und Vorrichtung zu dessen Durchführung

Country Status (5)

Country Link
US (1) US4245554A (enrdf_load_stackoverflow)
EP (1) EP0003983B1 (enrdf_load_stackoverflow)
JP (1) JPS54127712A (enrdf_load_stackoverflow)
BR (1) BR7901460A (enrdf_load_stackoverflow)
DE (1) DE2810690A1 (enrdf_load_stackoverflow)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365551A (en) * 1980-08-12 1982-12-28 Letraset Limited Screen printing apparatus
US4509422A (en) * 1982-04-01 1985-04-09 Sakurai Machine Trading Co., Ltd. Paper discharger in cylinder screen printing machine
JPS58151042U (ja) * 1982-04-01 1983-10-11 株式会社桜井製作所 シリンダ−型スクリ−ン印刷機における排紙装置
DE3306241A1 (de) * 1983-02-23 1984-08-23 Gerhard Ing.(grad.) 4800 Bielefeld Klemm Mit gegendruckwalze arbeitende druckmaschine, vorzugsweise siebdruckmaschine
DE3334444A1 (de) * 1983-09-23 1985-04-11 Gerhard 4800 Bielefeld Klemm Siebdruckmaschine
DE3719059C2 (de) * 1987-06-06 1994-02-24 Gerhard Klemm Siebdruckmaschine zum Bedrucken einer Warenbahn
JPS6446227U (enrdf_load_stackoverflow) * 1987-09-17 1989-03-22
DE3738836A1 (de) * 1987-11-16 1989-05-24 Kammann Maschf Werner Verfahren und vorrichtung zum bedrucken von bahnfoermigem material
JPH04361043A (ja) * 1991-06-06 1992-12-14 Riso Kagaku Corp 裏写りを生じない孔版印刷法
AU2003286231B2 (en) 2002-10-30 2008-09-18 Lifescan Scotland Limited Enzyme print humidification in a continuous process for manufacture of electrochemical sensors
CN100379576C (zh) * 2002-10-30 2008-04-09 因弗内斯医疗有限公司 生产电化学传感器的连续过程中酶的印刷湿化
EP1578612B1 (en) 2002-10-30 2007-02-14 Lifescan Scotland Ltd Continuous web process for the manufacture of electrochemical sensors
DE10311219A1 (de) * 2003-03-14 2004-09-30 Werner Kammann Maschinenfabrik Gmbh Verfahren und Vorrichtung zum Bedrucken einer Bahn
WO2009090392A1 (en) 2008-01-18 2009-07-23 Lifescan Scotland Limited Method and system of manufacturing test strip lots having a predetermined calibration characteristic
CN113103732B (zh) * 2021-02-26 2023-04-14 深圳正实自动化设备有限公司 一种led显示器生产用锡膏印刷机及其印刷方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229627A (en) * 1963-08-19 1966-01-18 Erwin P Pollitt Multicolor screen printing press
FR1486968A (fr) * 1966-07-19 1967-06-30 Advance Process Supply Co Perfectionnements à la sérigraphie polychrome
IT956921B (it) * 1972-06-28 1973-10-10 Brasa Umberto Sistema per il registro automatico del nastro di carta su cilindro nella stampa serigrafica in parti colare a piu colori
JPS5170382A (en) * 1974-12-17 1976-06-17 Shiro Ichinose Jidosukuriin purintohoho
US4063503A (en) * 1976-06-14 1977-12-20 Shiro Ichinose Automatic screen printing machine
FR2354879A1 (fr) * 1976-06-16 1978-01-13 Ichinose Shiro Machine automatique d'impression par serigraphie a longueur de rapport reglable
FR2354897A1 (fr) * 1976-06-17 1978-01-13 Peugeot Dispositif pour l'echange rapide d'une batterie d'accumulateur sur un vehicule electrique

Also Published As

Publication number Publication date
JPS54127712A (en) 1979-10-03
US4245554A (en) 1981-01-20
EP0003983A1 (de) 1979-09-19
BR7901460A (pt) 1979-10-09
DE2810690A1 (de) 1979-09-20
DE2810690C2 (enrdf_load_stackoverflow) 1987-10-22
JPS6132983B2 (enrdf_load_stackoverflow) 1986-07-30

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