EP0993957B1 - Dispositif d'adaptation automatique de la hauteur d'un dispositif d'impression comportant un capteur - Google Patents

Dispositif d'adaptation automatique de la hauteur d'un dispositif d'impression comportant un capteur Download PDF

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Publication number
EP0993957B1
EP0993957B1 EP99120232A EP99120232A EP0993957B1 EP 0993957 B1 EP0993957 B1 EP 0993957B1 EP 99120232 A EP99120232 A EP 99120232A EP 99120232 A EP99120232 A EP 99120232A EP 0993957 B1 EP0993957 B1 EP 0993957B1
Authority
EP
European Patent Office
Prior art keywords
printing
printing head
scanner
head suspension
print head
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
EP99120232A
Other languages
German (de)
English (en)
Other versions
EP0993957A3 (fr
EP0993957A2 (fr
Inventor
Karl-Heinz Dipl.-Ing. Pröstler
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.)
DSP-PRINT-TEC GmbH
Original Assignee
DSP-PRINT-TEC GmbH
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 DSP-PRINT-TEC GmbH filed Critical DSP-PRINT-TEC GmbH
Publication of EP0993957A2 publication Critical patent/EP0993957A2/fr
Publication of EP0993957A3 publication Critical patent/EP0993957A3/fr
Application granted granted Critical
Publication of EP0993957B1 publication Critical patent/EP0993957B1/fr
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
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
    • B41J25/3086—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms with print gap adjustment means between the print head and its carriage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects

Definitions

  • the invention relates to a device for automatically adjusting the height of a printer device (D) arranged above a conveyor with a movably mounted, resilient print head suspension (DA) and a print head holder (DH) for the printer device (D) connected to the print head suspension (DA).
  • DA movably mounted, resilient print head suspension
  • DH print head holder
  • DE 24 52 393 C2 discloses a printing system for applying figures and characters on packages that are brought on a conveyor known.
  • the printing system has u.a. a, adjacent to a conveyor frame on which a print head is arranged, which is adjustable in a direction parallel to the Packgutober Structure level in two mutually perpendicular directions, and in a third, perpendicular to this parallel plane direction and forth guided and forth which is provided with a drive device for this reciprocation.
  • the ink jet printer Printhead is arranged on a carriage which is movably guided in the two mutually perpendicular and parallel to the Packgutober Structure directions and connected for each of these directions of movement with a drive motor. Furthermore, the print head is associated with a surface element that is responsive to surface irregularities of the packaged product surface, which is in communication with a control device. The control device controls the drive motors for the carriage in such a way that the print head is automatically adjusted to an area suitable for printing on the packaged goods.
  • the scanning element by controlling the drive means for moving the print head in the third direction, maintains a preselected distance of the print head from a package surface having surface irregularities.
  • the protruding on the bumper probe element is loaded by a spring which is arranged on a guide shaft.
  • a switch responsive to the load of the spring engages a motor when the set load limits of the spring are reached. If the sensing element does not feel resistance, the minimum spring load is achieved and the motor rotates in the direction in which the printhead is extended. If the probe then encounters resistance, the spring is loaded and the switch shuts off the motor. If the load on the spring rises to the set maximum value, the switch responds again and causes the motor to rotate in the opposite direction, so that the spring is relieved again until the switch switches off the motor.
  • the spring thus controls the fine region and the motor controls the coarse region of the probe element.
  • the switch may be load or motion dependent, and the probe may include a ferromagnetic head that generates a signal as it strikes a steel band.
  • the printing system also detects protruding frame strips and strapping made of steel or plastic and prevents them from falling into the labeling area. Also, the printing of curved and irregular - z. B. convex surfaces - possible, with the print image is perfectly legible by keeping constant the distance between the print head and surface to be printed.
  • a device for printing thin-shelled objects by the pad printing method with at least one clamping device for the objects and at least one pad printing station known.
  • the device has a clamping devices with two opposing jaws, which are each equipped with a pressure ring, each of which can be placed on a pole portion of an egg is.
  • one of the jaws in a slightly loosened clamping position be brought, wherein the clamped egg is rotatable relative to the other jaw. It is also possible that with the help of a clamped, slightly loosened egg contacting straightening jaw, from which the egg is centered when turning and advancing, the egg straighten.
  • the directional jaw consists for example of a slightly concave curved surface, which is designed with a rubber-elastic mass.
  • the tensioning position which is slightly loosened for alignment, is generated by means of a pulling device acting on the clamping jaw.
  • the pulling device may preferably be a fixed Gleitkulisse, slide along the parts of the clamping jaw so that this clamping jaw is pulled over the other slightly outwards, so that the clamping position is relaxed.
  • jigs are mounted on a linear conveyor which passes through several stations in succession, wherein at the beginning of the run an egg feeder and at least one, preferably up to eight tampon printing stations are arranged in the conveyor.
  • a sensor which senses the non-occupation or the presence of a broken egg is arranged in the region through which the clamping device passes after the delivery device and the first tampon printing station.
  • the printing stations are activated via a control device so that they pass the non-existent or damaged eggs provided jigs without printing.
  • DE 195 32 724 A1 discloses a multi-color printing device with a print head containing the printhead, which is arranged in a printing unit known, the print head via a separate drive translationally above the object to be printed is moved, and wherein a Guiding device is provided for the object to be printed.
  • the guide means on a receiving surface for the object to be printed, wherein the object via the guide means in a direction orthogonal to the direction of movement of the printing unit under the printing unit is movable and wherein the distance of the printing unit is adjustable to the receiving surface of the guide device.
  • the drive for the object and the drive for the printing unit are controlled by a common control.
  • the drive of the printing unit is controlled via signals of the drive of the object.
  • the printing unit is thus controlled depending on the presence of an object or depending on the position of the object.
  • a height sensor is provided for the sensor. This sensor automatically detects the height of the object and adjusts the distance of the printing unit to the recording surface. This can be done immediately before the printing process and / or during the printing process. In this way, successively different height objects can be printed, which may also change the height of an object or the printing process can take place in two different levels.
  • DE 34 17 381 A1 discloses a device for automatically adjusting the height of a printer head over a supplied paper web in dependence on the thickness of the supplied paper known.
  • the paper entry does not hinder, the device in the conveying direction of the paper in front of the printer head a feeler roller rests on the supplied paper web on.
  • the sensor roller is resiliently mounted in the direction perpendicular to the conveying direction of the paper web and the sensor roller is connected to a linearly perpendicular to the conveying direction movable holder for the printer head.
  • the feeler roller is pivotable about a pivot point arranged in the direction of extent of the paper web at a relatively great distance from it, in that the connection point between the feeler roller and holder is arranged substantially perpendicularly above the axis of rotation of the feeler roller and as a joint between a pivot arm for the feeler roller and the holder is trained. It is thereby achieved that the amount of movement perpendicular to the conveying direction of the paper is approximately the same at the sensing point determined by the feeler roller and in the pressure range.
  • the feeler roller is pressed elastically against the paper web, wherein the elastic attachment is preferably effected by a spring.
  • the feeler roller presses the paper web firmly against a support pad located below the paper web, preferably a support roller.
  • a reliable and easy delivery is achieved by the pressure.
  • the threading of a new paper web to the printer head is easy, since this only has to be pushed under the feeler roller, which is thereby raised.
  • the printer head is adjustable relative to a by the sensing roller to the respective paper thickness in height above the paper web adjustable holder .
  • the height adjustment can be achieved in that the printer head is adjustable relative to the holder via a slot in the direction perpendicular to the paper web. It can also be provided here appropriate eccentric means.
  • a printing device separates with a scanner, which resiliently presses against the surface to be printed on fragile goods and to carry out a large height adjustment. This is particularly important because the printing industry is a highly advanced, development-friendly industry that is quick to pick up and put into effect any improvements or simplifications.
  • the invention is compared to the known printing systems on the object to design this of such that the printing of curved and irregular -.
  • B. convex surfaces - is possible, the image should be largely undistorted and perfectly legible.
  • the object is achieved by a device which is characterized in that at least the resilient print head suspension (DA) is aligned perpendicular to the conveyor of the surface to be printed, and the print head holder (DH) for the printer device (D) with an integrally formed scanner (A). is configured, and the printing device (D) extends into the scanner (A).
  • the device according to the invention has the advantage that a continuous transition between flat and uneven surfaces to be printed is created in a surprisingly simple manner. Compared to the prior art, the costly effort is low by eliminating a drive means for moving the print head and corresponding distance and position detectors.
  • the print head suspension ensures that the contact force on the surface to be printed is low, so that even against shock-sensitive surfaces can be printed.
  • the distance between the surface to be printed and the print head is small and is also constant, so that the printed image remains largely undistorted even at the transition to the curved surface. Depending on the height difference, it is possible to print exactly over material overlays.
  • the weight of the print head suspension is at least partially compensated by an adjustable tension spring which is arranged above the pressure suspension and which exerts a counterforce.
  • This embodiment of the invention has the advantage that the attenuation of the transient process of the print head suspension is adjustable over a wide range when the scanner abuts the surface to be printed. Damage to the surface to be printed or overshoot of the print head suspension is thereby reliably avoided.
  • the weight of the print head suspension is at least partially offset by a laterally arranged on the print head suspension rocker with associated adjustable compression or tension spring or by a counterweight.
  • An extension of the oscillating arm ensures that, with regard to inevitably existing tolerances in the print head guide, the distortions of the printed image caused by the pivoting remain small and, moreover, are not significant due to the extremely short distance between the print head and the surface to be printed.
  • the scanner has a spherical shape and has a recess for the printing area and a Winkeleinstell noticed on. This is adjustable so that the scanner slides at an acute angle to the surface to be printed.
  • This development of the invention has the advantage that a "smooth sliding" is achieved on the surface to be printed by the rounded on all sides scanner.
  • a direct contact after the printing process regardless of the direction of printing, practically can not take place through a slot beyond the curves.
  • the control device keeps the filling quantity in the print head cartridge of both print heads at the same fill level.
  • FIG. 1a shows a first embodiment of the print head suspension DA according to the invention in the view, wherein the weight of the print head suspension DA is at least partially compensated by an adjustable tension spring ZF arranged above the print head suspension DA which exerts a counterforce.
  • FIG. 2a shows a second embodiment of the print head suspension DA according to the invention, in which the weight of the print head suspension DA is at least partially compensated by a rocker S arranged laterally on the print head suspension DA with an associated adjustable compression or tension spring F or by a counterweight.
  • the printhead holder DH is designed as a movable printhead suspension DA with a molded-on scanner A, wherein the distance between the surface to be printed and the print head DK is low and also constant.
  • a parallelogram or triangular or roller or gear guide can be provided with or without pneumatic drive of the print head suspension DA.
  • the scanner A may be spherically shaped and have a recess AS for the printing area. Furthermore, an angle adjusting device can be provided, which is preferably adjustable such that the scanner A in acute angle slips on the surface to be printed. When impinging on the surface to be printed, the scanner A triggers a switching function for the printing process.
  • the printing device D itself may be an ink jet printer or a laser printer or a digital printer which is in communication with a control device. The control device is connected both to the conveyor and to a storage device containing the imprint (not shown in the drawing).
  • the control device keeps the filling quantity in the printhead cartridge of both print heads DK at the same level.
  • print heads DK are connected in series, which are controlled in parallel by the control device and which in each case print in the product direction or perpendicular to the transport direction.
  • printhead holders DH are or are arranged laterally and / or underneath.
  • the printing system according to the invention is suitable for the direct printing of fragile goods, such as eggs, glass surfaces, and also goods with flat and uneven surface such as cardboard, food, pipes, film wraps, tarpaulins, Rescueumwüllept, pharmaceutical preparations, furniture and similar wood products, tubes, bottles, Balloons, CD-s, data carriers such as floppy disks, chip cards and other suitable.
  • fragile goods such as eggs, glass surfaces, and also goods with flat and uneven surface
  • the printing device is followed by an infrared or UV lamp or a blower.
  • the controller the transport speed of the conveyor and the printing speed to each other synchronously.
  • a rotary encoder / frequency co-ordinator can be provided.
  • At least one air nozzle can be arranged on the scanner A in such a way that an air cushion can be generated between the scanner A and the product surface by overpressure or by suction to the product surface.
  • special inks can be used, which indicate, for example by color change, the state raw or cooked eggs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Common Mechanisms (AREA)
  • Ink Jet (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Facsimile Scanning Arrangements (AREA)

Claims (17)

  1. Dispositif pour l'adaptation automatique de la hauteur d'un dispositif d'imprimante disposé au-dessus d'un dispositif de convoyage (D) avec
    • une suspension de tête d'impression (DA) mobile sur roulement et à ressort élastique, et
    • un support de tête d'impression (DH) pour le dispositif d'impression (D) relié avec la suspension de tête d'impression,
    sachant que
    • au moins la suspension de tête d'impression (DA) à ressort élastique est disposée de façon verticale par rapport au dispositif de convoyage de la surface devant être imprimée, et
    caractérisé par le fait que
    • le support de tête d'impression (DH) pour le dispositif d'impression (D) est configuré avec un détecteur (A) formé et que le dispositif d'impression (D) s'étend jusqu'au détecteur (A).
  2. Dispositif selon la revendication 1, caractérisé par le fait que le poids de la suspension de tête d'impression (DA) est compensé au moins partiellement par un ressort de traction (ZF) pouvant être réglé, disposé au-dessus de la suspension de la tête d'impression et exerçant une force contraire.
  3. Dispositif selon la revendication 1, caractérisé par le fait que le poids de la suspension de tête d'impression (DA) est compensé au moins partiellement par un bras oscillant (S) muni d'un ressort de traction ou de pression (F) réglable, disposé latéralement sur la suspension de bras oscillant ou par un contrepoids.
  4. Dispositif selon la revendication 1, caractérisé par le fait qu'un guidage sous forme de parallélogramme ou de triangle ou à rouleaux ou à roues dentées avec un amortisseur d'oscillations est prévu pour la suspension de tête d'impression (DA).
  5. Dispositif selon la revendication 1, caractérisé par le fait que le détecteur (A) est formé de façon bombée, présente une réservation (AS) pour la zone d'impression et un dispositif de réglage d'angle pouvant être réglé de façon à ce que le détecteur (A) glisse avec un angle aigu sur la surface devant être imprimée.
  6. Dispositif selon la revendication 1, caractérisé par le fait que le détecteur (A) déclenche une fonction d'enclenchement pour le processus d'impression lorsqu'il touche la surface devant être imprimée.
  7. Dispositif selon la revendication 1, caractérisé par le fait que la suspension de tête d'impression (DA) porte au moins deux têtes d'impression (DK) qui sont tenues à la même hauteur par la suspension de tête d'impression (DA).
  8. Dispositif selon la revendication 1, caractérisé par le fait que le dispositif d'impression (D) est une imprimante à jet d'encre, une imprimante laser ou une imprimante numérique qui est en relation avec un dispositif de commande et que le dispositif de commande est relié, tant au dispositif de convoyage qu'au dispositif de réservoir contenant les imprimés.
  9. Dispositif selon la revendication 7 ou 8, caractérisé par le fait qu'afin d'obtenir une vitesse élevée et /ou déclenchement, plusieurs têtes d'impression (DK) sont branchées l'une derrière l'autre, qui sont commandées parallèlement par le dispositif de commande et qui impriment dans chaque cas dans la direction du produit ou verticalement à la direction du transport.
  10. Dispositif selon la revendication 1 ou 8, caractérisé par le fait qu'une(des) tête(s) d'impression (DH) est ou sont disposé(s) latéralement ou en dessous pour l'impression des surface latérale ou de base du produit se trouvant sur le dispositif de convoyage.
  11. Dispositif selon la revendication 1, caractérisé par le fait qu'une lampe infrarouge ou UV ou une soufflerie est disposée derrière le dispositif d'impression (D).
  12. Dispositif selon la revendication 1, caractérisé par le fait qu'au moins un injecteur d'air est disposé sur le détecteur (A) de façon à ce qu'entre le détecteur (A) et la surface du produit, on peut créer sur la surface du produit un coussin d'air par surpression ou une aspiration par sous-pression.
  13. Dispositif selon la revendication 1, caractérisé par le fait que la face inférieure du détecteur (A) présente un renfoncement.
  14. Dispositif selon la revendication 1, caractérisé par le fait que le support de tête d'impression (DH) est suspendu à un bras oscillant (S).
  15. Procédé destiné à employer un dispositif selon la revendication 7 ou 8, caractérisé par le fait que le dispositif de commande maintient le niveau de remplissage dans les cartouches de tête d'impression des deux têtes d'impression (DK) au même niveau.
  16. Procédé destiné à employer un dispositif selon une des revendications précédentes 1 à 14, caractérisé par le fait que le dispositif de commande maintient synchrone l'une par rapport à l'autre la vitesse de transport du dispositif de convoyage et la vitesse d'impression.
  17. Procédé destiné à employer un dispositif selon une des revendications précédentes 1 à 14, caractérisé par l'emploi d'une encre affichant par un changement de couleur le fait que les oeufs sont crus ou cuits.
EP99120232A 1998-10-13 1999-10-11 Dispositif d'adaptation automatique de la hauteur d'un dispositif d'impression comportant un capteur Expired - Lifetime EP0993957B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19847062A DE19847062B4 (de) 1998-10-13 1998-10-13 Vorrichtung zur automatischen Anpassung der Höhe einer oberhalb einer Fördereinrichtung angeordneten Druckeinrichtung mit einem Abtaster
DE19847062 1998-10-13

Publications (3)

Publication Number Publication Date
EP0993957A2 EP0993957A2 (fr) 2000-04-19
EP0993957A3 EP0993957A3 (fr) 2000-12-13
EP0993957B1 true EP0993957B1 (fr) 2006-08-09

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EP99120232A Expired - Lifetime EP0993957B1 (fr) 1998-10-13 1999-10-11 Dispositif d'adaptation automatique de la hauteur d'un dispositif d'impression comportant un capteur

Country Status (4)

Country Link
EP (1) EP0993957B1 (fr)
AT (1) ATE335613T1 (fr)
DE (2) DE19847062B4 (fr)
ES (1) ES2270557T3 (fr)

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CN103419509B (zh) * 2012-05-18 2016-08-03 上海运安制版有限公司 瓷砖数码喷墨系统喷墨头高度自动调节装置
CN103707650B (zh) * 2013-12-02 2015-04-22 国家电网公司 一种槽型指示仪表画盘装置及其画盘方法
CN104057720B (zh) * 2014-06-30 2018-02-06 兰州理工大学 铝锭激光打标专用自动定位机构
CN104354477B (zh) * 2014-09-24 2016-07-13 合肥汉闻数字印刷设备有限公司 一种用于轮胎数字打印机的可移动喷头系统
DE102015202399A1 (de) 2015-02-11 2016-08-11 Heidelberger Druckmaschinen Ag Vorrichtung zum Bedrucken wenigstens eines Bereichs der Oberfläche eines Objekts
DE102016208079A1 (de) * 2015-09-16 2017-03-16 Heidelberger Druckmaschinen Ag Verfahren zur Kollisionsvermeidung, zur Anpassung des Abstandes und zur aktorischen Hubbewegung
CA3043301A1 (fr) * 2016-12-12 2018-06-21 Sicpa Holding Sa Procede et ensemble de marquage
CN112428697B (zh) * 2020-11-13 2021-06-08 武汉先同科技有限公司 一种便携式的彩色打印机
DE102021121195A1 (de) 2021-08-16 2023-02-16 Webasto SE Glasscheibe einer Fahrzeugverglasung mit einer Bedruckung
WO2023147283A1 (fr) * 2022-01-31 2023-08-03 Ranpak Corp. Appareil et procédé d'impression sur un contenant

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Also Published As

Publication number Publication date
EP0993957A3 (fr) 2000-12-13
DE19847062A1 (de) 2001-04-26
DE19847062B4 (de) 2004-03-18
DE59913756D1 (de) 2006-09-21
ES2270557T3 (es) 2007-04-01
ATE335613T1 (de) 2006-09-15
EP0993957A2 (fr) 2000-04-19

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