EP2897801B1 - Systèmes améliorés d'alignement de rouleaux, et structures associées - Google Patents

Systèmes améliorés d'alignement de rouleaux, et structures associées Download PDF

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Publication number
EP2897801B1
EP2897801B1 EP13839015.8A EP13839015A EP2897801B1 EP 2897801 B1 EP2897801 B1 EP 2897801B1 EP 13839015 A EP13839015 A EP 13839015A EP 2897801 B1 EP2897801 B1 EP 2897801B1
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EP
European Patent Office
Prior art keywords
transfer belt
workpiece
location
cylindrical rollers
belt
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.)
Active
Application number
EP13839015.8A
Other languages
German (de)
English (en)
Other versions
EP2897801B8 (fr
EP2897801A4 (fr
EP2897801A2 (fr
Inventor
Pedro Benito
Jose Manuel Plaja ROIG
Roque NEBOT
Alfredo GIRBES
Ricardo MENDOZA
Mario Kuehn
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.)
Electronics for Imaging Inc
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Electronics for Imaging Inc
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Publication date
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Publication of EP2897801A2 publication Critical patent/EP2897801A2/fr
Publication of EP2897801A4 publication Critical patent/EP2897801A4/fr
Publication of EP2897801B1 publication Critical patent/EP2897801B1/fr
Application granted granted Critical
Publication of EP2897801B8 publication Critical patent/EP2897801B8/fr
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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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/007—Conveyor belts or like feeding devices
    • 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
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the 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
    • B41J25/34—Bodily-changeable print heads or carriages
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/02—Framework
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/17—Cleaning arrangements
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/54—Locking devices applied to printing mechanisms
    • B41J29/58—Locking devices applied to printing mechanisms and automatically actuated
    • 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

Definitions

  • the invention relates to the field of conveyor systems. More particularly, the invention relates to improved transfer belts, roller registration systems, associated structures, and related equipment.
  • Conveyor belt systems have long been used to transfer objects, such as materials, objects, substrates, and workpieces.
  • the transfer belt is suspended between a plurality of rollers, wherein one of the rollers, i.e. a drive roller, is typically connected to a drive mechanism, e.g. a motor, such that rotational movement of the drive mechanism results in rotational movement of the drive roller, which moves the belt with respect to the rollers, providing linear movement.
  • a drive mechanism e.g. a motor
  • Printing systems often use conveyor belt systems to transfer workpieces, such as but not limited to flexible substrates, e.g. paper or film, or rigid substrates, e.g. ceramic tiles.
  • ceramic tiles are arranged upon a conveyor belt, and are moved through a print zone, which typically includes a plurality of print bars, wherein each of the print bar assemblies comprise a plurality of print heads that are arranged to controllably deliver ink onto the tiles as they are moved through the print zone.
  • the required resolution of delivered ink has increased over time, such that the demands for increased accuracy can extend beyond the accuracy with which workpieces can be located and moved, particularly within a manufacturing environment, where workpieces are often required to be accurately moved through one or more print zones during the delivery of ink to the workpieces.
  • some recent transfer belts have been manufactured with internal cables, such as comprising metal, e.g. stainless steel, which are required to be accurately welded. While such transfer belt materials may initially have favorable dimensional specifications, e.g. resistance to elongation, the dimensional stability of such belts is often lost during one or more joining processes, e.g. pressing, clamping and/or welding.
  • US 2003/223786 A1 describes a belt moving device which includes a drive shaft for moving the belt and a drive transfer line for transferring the output torque of a motor to the drive shaft.
  • a marker sensor senses a marker positioned on the belt to thereby determine the position of the belt in the direction of movement.
  • a rotation condition sensor senses the rotation condition of the drive shaft.
  • a first correction information generating circuit generates, based on the output of the marker sensor, correction information for correcting the position of the belt.
  • a second correction information generating circuit generates, based on the output of the rotation condition sensor, correction information for correcting the rotation condition of the drive shaft.;
  • a controller controls the movement of the motor in accordance with the correction information output from the first and second correction information generating circuits.
  • Enhanced roller registration systems and associated structures provide improved registration for a transfer belt that is driven between rollers. Improved belt materials and construction techniques provide improved dimensional stability over prior transfer belts.
  • one or more sensors provide signals that sense one or more workpieces at one or more locations on the transfer belt. The signals are sent to a controller, which is configured to integrate the detected location of the workpieces with one or more processes that are carried out with respect to the workpieces. While the enhanced roller registration system and structures may advantageously be used for a wide variety of conveyors, some current embodiments are adapted to printing systems, such as to deliver ink and/or glazing onto ceramic tiles.
  • Figure 1 is a schematic diagram of an enhanced roller registration system 10.
  • Figure 2 is a side view of an exemplary printing system 80 having an enhanced roller registration system 10 associated therewith.
  • Figure 3 is a plan view of an exemplary printing system 80 having an enhanced roller registration system 10 associated therewith.
  • the exemplary conveyor assembly 14 seen in Figure 1 comprises a transfer belt 18 that extends between a plurality of rollers 16, e.g. 16a, 16b, which are rotatably mounted with respect to a frame structure 12.
  • the exemplary roller registration system 10 seen in Figure 1 provides a simplified view of the system 10.
  • conveyor assembly 14 may further comprise one or more additional rollers, such as a tension roller 52 associated with a tension mechanism 90 ( FIG. 2 , FIG. 3 ), and/or the rollers 16 and transfer belt 18 may further comprise a plurality of teeth that intermesh.
  • the enhanced roller registration system 10 may preferably comprise additional structures and mechanisms to provide improved dimensional tolerances for any of setup, operation, or longevity.
  • the exemplary conveyor assembly 14 seen in Figure 1 is typically operated upon by a drive mechanism 26, which controllably rotates one of the rollers 16, e.g. 16a, thus producing movement 32 of the transfer belt 32, by which one or more workpieces 42, e.g. ceramic tiles 42, are controllably moved, such as to be operated upon at one or more locations with respect to the system 10.
  • a drive mechanism 26 which controllably rotates one of the rollers 16, e.g. 16a, thus producing movement 32 of the transfer belt 32, by which one or more workpieces 42, e.g. ceramic tiles 42, are controllably moved, such as to be operated upon at one or more locations with respect to the system 10.
  • the drive mechanism 26 typically comprises a drive motor 302 ( FIG. 9 ) and a coupling mechanism, e.g. a transfer drive 304 ( FIG. 9 ), wherein the drive motor 302 is controllably powered through a controller 20, e.g. a programmable logic controller (PLC).
  • the drive motor 302 may preferably comprise one or more enhanced structures, to provide highly accurate and repeatable location and movement.
  • the roller registration system may preferably include an encoder 28, such as to provide accurate controlled movement 32 of the transfer belt 18 through the drive mechanism 26.
  • the controller 20 typically comprises one or more processors 22, e.g. 22a-22e, and may also comprise storage 24, e.g. memory, such as for but not limited to storage of any of operating parameters, thresholds, operational history, and/or tracking.
  • the controller is typically configured to control all of the movements and operations in the roller registration system and associated hardware in a printing system 80, such as but not limited to movement of the transfer belt through the drive mechanism 26, and coordinated operations of the printing bars 84, e.g. 84a-84f.
  • a display 34 and user interface 36 are also typically connected to the controller 20, such as to provide input from a user USR, e.g. an operator, and/or to provide information to the user USR.
  • the system 10 may further comprise a communications link 46, through which the controller 20 may preferably be configured to transmit an output signal 48 or receive an input signal 50.
  • the enhanced roller registration system 10 seen in Figure 1 further comprises one or more workpiece sensors 40, e.g. lasers 40, by which the location of a workpiece 42, e.g. a ceramic tile 42, is sensed, whereby one or more operations may accurately be carried out upon the workpiece 42.
  • a workpiece sensors 40 e.g. lasers 40
  • the location of a workpiece 42 e.g. a ceramic tile 42
  • one or more operations may accurately be carried out upon the workpiece 42.
  • a printing system 80 that controllably applies ink 230 ( FIG. 8 ) to a ceramic tile 42 at one or more print bars 84, 84a-84f ( FIG. 2 , FIG. 3 )
  • the controller 20 may control and/or adjust the delivery 224 of ink 230 at one or more print bars 84.
  • System embodiments 10 that comprise one or more workpiece sensors 40 thus provide improved design reproduction on workpieces 42, while reducing waste, and avoiding the delivery 224 of ink 230 to anywhere but the intended location upon a workpiece 42.
  • the conveyor assembly 14 may comprise one or more belt sensors 44, e.g. lasers 44, by which the location of one or more portions of the transfer belt are sensed, such as for any of setup or operation.
  • the belt sensor 44 and controller 20 may preferably be configured to determine if there is a problem, e.g. setup, tension, or longevity, of the transfer belt 18, or if the performance of the transfer belt 18 is acceptable.
  • the exemplary printing system 80 seen in Figure 2 and Figure 3 is configured for printing on ceramic tiles 42, and may preferably comprise one or more workpiece guides 102, upstream of one or more of the print bars 84, such as at the entrance area 108 of the transfer belt 18.
  • the workpiece guides 102 ensure that tiles 42 are in the proper location on the transfer belt 18, e.g. in the middle, and that the tiles 42 are acceptably straight, e.g. within an acceptable threshold.
  • the tiles 42 placed on the transfer belt may not initially be located with a great degree of accuracy, and/or may be twisted, i.e. rotated.
  • the use of multiple workpiece sensors 40 may preferably be used for determining not only the location of a workpiece 42, but also if there is any skew of a workpiece 42, which may also be corrected in real time, i.e. on the fly.
  • the system 10,80 may preferably controllably adjust the delivery 224 of ink 230 for a skewed ceramic tile 42.
  • the system 10,80 may be configured to notify the operator USR, such as through the display 34 or through other visual output or acoustic output, e.g. an alarm 38 ( FIG. 1 ).
  • multiple workpiece sensors 40 may provide location data signals for more than one location within the system, e.g. 80, such that, at any desired moment, the controller 20 can accurately determine where a tile 42 is located, wherein the controller 20 can accurately provide a signal 96 ( FIG. 2 ) to direct one or more of the printing bars 84 to fire 224 the ink 230.
  • the controller 20 is configured to register the location of the workpiece 42, e.g. the tile 42, in conjunction with the known location and motion of the transfer belt 18. Therefore, the enhanced registration system 10 may preferably be configured to link, i.e. join the electronic devices with mechanical devices.
  • the controller 20 determines the location of the workpiece 42.
  • the controller 20 also assures that the transfer belt 18 has not moved, i.e. in relation to the workpiece 42. Otherwise, relative movement between the workpiece 42 and the transfer belt 18 would result in a mistake, due to the resultant misregistration.
  • the exemplary roller registration system 10 and associated printing system 80 seen in Figure 2 and Figure 3 may preferably comprise an enhanced tension adjustment mechanism 90 for the transfer belt 18.
  • a threaded, i.e. guide screw mechanism 92 FIG. 3
  • the tension mechanism 90 typically comprises a pair of guide screws 92, e.g. 92a,92b, on opposing sides of one of the rollers 16, e.g. 16a or 16b.
  • One or both of the guide screws 92 may preferably be adjustable to achieve parallelism between the roller and transfer belt 18, i.e. to achieve 90 degrees between the axis of the roller 16 and the longitudinal axis of the transfer belt 18.
  • a guide screw set 92 associated with a first roller 16, e.g. 16a may be considered a main or primary guide 92, which may be adjustable for parallelism, when the corresponding roller 16 is free for adjustment of any of parallelism or tension, i.e. not locked down, such as when the position of the opposing roller 16, e.g. 16b, is maintained.
  • the opposite roller 16, e.g. 16b may be adjustable for any of parallelism or tension, i.e. not locked down, such as when the position of the opposing roller 16, e.g. 16a, is maintained.
  • the operator USR can then determine when the roller 16 is aligned with the guide 92, which assures that the transfer belt 18 is parallel to the opposing roller 16 and properly aligned with the transfer belt 18.
  • the operator USR may start up the roller registration system 10 in a test mode, such as to confirm that the guide is not getting hot, e.g. from excessive friction. If not, the system 10,80 may be put into or returned to service. If the temperature of the guide increases excessively during testing, the operator or service personnel USR may repeat one or more of the procedures as necessary, and retest.
  • the operator USR may preferably mark 112 both the transfer belt 18 and the guide, and then rotabably move, i.e. advance, the transfer belt 18 from one part of the system to another part of the system, e.g. at opposite ends 108,110, at which time the location of the mark 112 may be determined and compared to the expected location, by which a difference is calculated, e.g. in millimeters.
  • the calculated difference provides an indication as to whether there is any slip in the transfer belt 18, i.e. to confirm that there is no problem with the set up during operation.
  • the owner or operator USR does not typically need to reset the tolerance, as the rollers 16 and transfer belt 18 are dimensionally stable, such as for the expected lifetime of the transfer belt, e.g. which may have a useful lifetime in operation of up to or greater than about two years.
  • the system 10 may preferably comprise a belt sensor 44 ( FIG. 1 ).
  • a known location in the transfer belt 18 may further comprise a marker 114 e.g. such as but not limited to a piece of metal, a magnet, or a chip, such that the marked portion of the transfer belt 18 can be registered as it passes the belt sensor 94.
  • the tolerance may be automatically checked, e.g. based on any of periodically, continuously, or as desired.
  • Such a configuration readily provides one or more readings, without the need to manually mark and check the belt tolerance.
  • the automated configuration may preferably provide remote diagnostics, wherein the data may be sent 50 ( FIG. 1 ) and displayed to a remote location, such as to remotely confirm that the registration system 10 has remained square and parallel, without going onsite.
  • the communication link 46 may preferably be implemented though a wired or wireless port.
  • a printing system 80 at a customer location may preferably be connected, such as through a DSL port, whereby the printing system may be remotely monitored, for any of assistance, service, or remote diagnostics. Therefore, through any of the local controller 20 or through a remote terminal, one or more data processing functions can be implemented, such as to operate the conveyor assembly 14, control the print heads 222 ( FIG. 8 ) and corresponding ink jets.
  • the user or other personnel can establish, implement, and/or update the set up for the printing system 80, such as but not limited to voltages, the transfer belt 18, controlling movement of print bar covers, e.g. up or down, or any combination thereof.
  • a print job 90 such as received from a remote terminal, e.g. an artist or designer, arrives at a main computer 92, which may be associated with the controller 20.
  • the print job 90 comprises a tagged image file format (TIFF) print job 90.
  • TIFF tagged image file format
  • the main computer 92 then typically produces, i.e. RIPs, a raster image file from the received print file 90, through which the main computer 92 makes the separations 94, which are assigned to one or more channels 96 as necessary to print the image.
  • Each of the channels 96 are sent to a corresponding slave computer or processor 98, e.g. 98a-98f associated with each print bar 84, e.g. 84a-84f, for printing respective colors on the workpieces 42.
  • the slave computers or processors 98 may be independent of or integrated with corresponding print bars 84.
  • the different printing bars 84, e.g. 84a-84f are commanded by the respective slave computers 98, whereby by each slave 98, e.g. 98a operates in conjunction with a respective for each print bar 84, 84a, i.e. one channel for each computer 98.
  • the printing system 80 is typically configured to work with the graphics that are loading into the slaves 98.
  • the slave computer connects, e.g. through an HPC card, to each of the print heads 222 ( FIG. 9 ).
  • each print head 222 has a dedicated HPC card, for local processing.
  • Enhanced Transfer Belts for Roller Registration System may comprise conventional transfer belts 18, such as presently available. However, a number of enhancements may preferably be made to improve the transfer belt structures, such as related to any of materials or design, e.g. cross sectional structures and/or seamless construction.
  • Figure 4 is a partial cutaway view 120 of a first exemplary enhanced transfer belt 18a.
  • Figure 5 is a partial cutaway view 140 of a second exemplary enhanced transfer belt 18b.
  • Figure 6 is a partial cutaway view 160 of a third exemplary enhanced transfer belt 18c.
  • Figure 7 is a partial cutaway view 180 of a fourth exemplary enhanced transfer belt 18d.
  • a plurality of cords or cables are located longitudinally within the belt substrate 122, which has an outer surface 124a, and an inner surface 124b opposite the outer surface 124a.
  • the outer surface 124 of the transfer belt is considered to be a work surface, in that it is configured to receive workpieces 42, and faces the print heads 222 ( FIG. 8 ) associated with the print bars 84, e.g. 84a-84f.
  • the inner surface 124b of the transfer belt 18 is considered to be a driven surface, in that it contacts the rollers 16, e.g. 16a, 16b, wherein the inner surface 124b may preferably comprise a continuous plurality of teeth or ridges 130, which are configured to intermesh with corresponding teeth on one or more of the rollers 16.
  • the third exemplary enhanced conveyor belt 18c seen in Figure 6 may have a similar construction to that of the first exemplary enhanced conveyor belt 18a seen in Figure 4 , except that the profile of the outer surface 124a has a series of outward facing ridges 162, such as corresponding to the series of cords 128a.
  • each of the cables 128b comprises a plurality of cable elements 142, in contrast to the single cords 128a seen in Figure 4 and Figure 6 .
  • the fourth exemplary enhanced conveyor belt 18d seen in Figure 7 may have a similar construction to that of the second exemplary enhanced conveyor belt 18b seen in Figure 5 , except that the profile of the outer surface 124a has a series of outward facing ridges 162, such as corresponding to the series of embedded cables 128b.
  • Some current embodiments of the enhanced conveyor belt 18, e.g. 18b, 18d comprise about three to five embedded cables 128b.
  • the structures, materials and seamless construction of the enhanced transfer belts 18, e.g. 18a-18d may preferably be configured to improve the registration accuracy of the enhanced system 10, as compared to prior transfer belts, to provide accurate and repeatable performance in production.
  • the single cords 128a or composite cables 128b may preferably comprise synthetic fiber, e.g. para-aramid synthetic fiber, such as Kevlar®, available through E. I. du Pont de Nemours and Company, of Wilmington, Delaware, United States.
  • Enhanced transfer belts 18 that include para-aramid synthetic fiber cords 128a or composite cables 128b, such as with seamless construction, are highly resistant to changes in dimensions, and avoid problems associated with seamed construction, by preventing dimensional movement of the belt.
  • Such enhanced transfer belts 18 maintain their form, i.e. they don't lose their shape, thus providing a very stable and consistent material for accurately moving the workpieces 42, e.g. ceramic tiles 42.
  • the seamless construction of the enhanced transfer belts retains the resistance to elongation for the enhanced belt material.
  • Figure 8 is a detailed partial perspective view 220 of an exemplary conveyor assembly 14 associated with an enhanced roller registration system.
  • Figure 9 is a detailed view 300 of a drive mechanism 26, end roller 16 and conveyor assembly 14 for an exemplary ceramic tile printing system 80 having an enhanced roller registration system 10 associated therewith.
  • the partial cutaway view of the transfer belt 18 seen in Figure 8 reveals that the conveyor assembly 15 typically comprises a transfer belt support 240 located between the rollers 16, such as to support the weight of workpieces 42, e.g. ceramic tiles 42.
  • the drive motor 302 is preferably chosen to reduce or eliminate electrical noise, e.g. radio frequency (RF) noise, which may otherwise interfere with the operation of the electronics associated with any of the enhanced roller registration system 10 or other components in the print system 80.
  • the drive motor may preferably comprise a brushless motor 302, to provide accurate continuous operation.
  • the encoder 28 FIG. 1
  • the encoder 28 may preferably be chosen to provide accurate continuous operation of the drive motor 302, while reducing or eliminating RF noise.
  • the drive motor 302 may preferably be specified for a wide variety of applications, such as to provide stepped, i.e. start and stop, motion, or continuous motion.
  • the drive mechanism 26 is typically required to transport a large number of ceramic tiles 42, which are commonly large and heavy.
  • the ceramic tile printing system 80 is configured to move the ceramic tiles 42 at a constant velocity, wherein the maximum speed of the transport belt 18 is about five meters per minute.
  • the drive mechanism 26, comprising the drive motor 302 and transfer drive 304 are rated to controllably bring the system up to speed, maintain a constant speed throughout its rated duty cycle, e.g. up to full 100 percent capacity, and bring the system to a stop.
  • the transfer belt 18 is also configured to be adequately strong under all operation conditions, while avoiding deformation or flexing. Similarly, all other hardware associated with the roller registration system 10 and printing system 80 are configured to meet all the operation requirements.
  • the exemplary printing system 80 disclosed herein may preferably be configured to operate with a constant belt velocity
  • the enhanced roller registration system 10 may suitably be configured for other types of operations, such as for systems that may require stepped operation, wherein the drive motor 302 may preferably be configured to be powered on an off.
  • the motor may preferably be controlled with pulse width modulation (PWM).
  • PWM pulse width modulation
  • Some embodiments of the enhanced roller registration system and corresponding system, e.g. printing system 80, are powered through an uninterruptable power supply (UPS), wherein the system buffers the outside current, such as for any of the controller 20, sensors, print bar electronics, associated computers, memories, or other sensitive electronics.
  • UPS uninterruptable power supply
  • the operation of the drive mechanism 26 is controlled through the controller 20, such as for any of start up, operation, and shutdown of the conveyor assembly 14.
  • UPS uninterruptable power supply
  • the printing system 80 can therefore move at a constant rate, independent of incoming power fluctuations, wherein the system can match the electronics and print heads 222.
  • the UPS may preferably be configured to provide sufficient time, such as to switch off the machine production, e.g. to avoid problems with the electronics, the computers, and heads.
  • some components may not be required to be powered by the uninterruptable power supply (UPS).
  • UPS uninterruptable power supply
  • some temperature controls may not be powered by the uninterruptable power supply (UPS), as temperature parameters may not be required to be tracked when a production line associated with the system is stopped.
  • roller registration system is described herein with respect to an exemplary printing system, such as for but not limited to printing upon ceramic tiles, it should be understood that the structures and systems described herein may readily be implemented for a wide variety of conveyor systems.

Landscapes

  • Ink Jet (AREA)
  • Handling Of Sheets (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Rotary Presses (AREA)
  • Control Of Conveyors (AREA)

Claims (15)

  1. Structure d'alignement de rouleaux (10), comprenant un cadre de support (12), au moins deux rouleaux cylindriques (16), dans laquelle au moins l'un des rouleaux cylindriques (16) est fixé de manière rotative au cadre de support (12), une courroie de transfert (18) suspendue entre les au moins deux rouleaux cylindriques (16), un mécanisme d'entraînement (26) destiné à faire tourner de manière contrôlable au moins l'un des rouleaux cylindriques (16), et un moyen de commande (20) comportant au moins un processeur (22), la structure d'alignement de rouleaux (10) comprenant par ailleurs:
    un ou plusieurs capteurs de pièce à traiter (40) par lesquels est détectée l'emplacement d'une pièce à traiter (42), où une ou plusieurs opérations peuvent être réalisées avec précision sur la pièce à traiter (42);
    un codeur (28) destiné à fournir un mouvement contrôlé précis de la courroie de transfert (18) par l'intermédiaire du mécanisme d'entraînement (26); et
    un ou plusieurs capteurs de courroie (44) par lesquels est détecté l'emplacement d'une ou de plusieurs parties de la courroie de transfert (18), pour l'une ou l'autre parmi la configuration ou l'opération;
    dans lequel le codeur (28) code le mouvement de la courroie de transfert (18) et, à la réception d'un signal de localisation (41) du capteur de pièce à traiter (40), le moyen de commande (20) est configuré pour:
    aligner l'emplacement de la pièce à traiter (42) ensemble avec l'emplacement et le mouvement connus de la courroie de transfert (18), et
    intégrer l'emplacement de la pièce à traiter (42) avec un ou plusieurs processus qui sont réalisés en ce qui concerne la pièce à traiter (42).
  2. Structure d'alignement de rouleaux (10) selon la revendication 1, dans laquelle la tolérance est vérifiée automatiquement par les un ou plusieurs capteurs de courroie (44) sur base de l'un ou l'autre parmi périodiquement, en continu ou tel que souhaité.
  3. Structure d'alignement de rouleaux (10) selon la revendication 1, comprenant par ailleurs:
    un mécanisme de réglage de tension (90) comportant une paire de vis de guidage (92a, 92b) sur les côtés opposés de l'un des rouleaux cylindriques (16), destinées à régler l'un ou l'autre parmi le parallélisme ou la tension de la courroie de transfert (18).
  4. Structure d'alignement de rouleaux (10) selon la revendication 1, comprenant par ailleurs:
    une alarme (38) comportant l'une ou l'autre parmi une sortie visuelle ou une sortie acoustique destinée à notifier un opérateur sur base de l'emplacement ou de l'inclinaison d'une ou plusieurs des pièces à traiter détecté par les capteurs de pièce à traiter (40).
  5. Structure d'alignement de rouleaux (10) selon la revendication 1, dans lequel une ou plusieurs barres d'impression (84) sont montées sur le cadre de support (12), dans lequel les pièces à traiter (42) sont des carreaux (42), la structure d'alignement de rouleaux (10) comprenant par ailleurs:
    un ou plusieurs guide-pièce à traiter (102) en amont d'une ou plusieurs des barres d'impression (84) pour assurer que les carreaux (42) se trouvent au bon emplacement sur la courroie de transfert (18).
  6. Système d'impression (80), comprenant un cadre de support (12), au moins deux rouleaux cylindriques (16), dans lequel au moins l'un des rouleaux cylindriques (16) est fixé de manière rotative au cadre de support (12), une courroie de transfert (18) suspendue entre les au moins deux rouleaux cylindriques (16), un mécanisme d'entraînement (26) destiné à faire tourner de manière contrôlable au moins l'un des rouleaux cylindriques (16), une ou plusieurs barres d'impression (84) montées sur le cadre de support (12), et un moyen de commande (20) comportant au moins un processeur (22), le système d'impression (80) comprenant par ailleurs:
    un ou plusieurs capteurs de pièce à traiter (40) par lesquels est détectée l'emplacement d'une pièce à traiter (42), où une ou plusieurs opérations peuvent être réalisées avec précision sur la pièce à traiter (42);
    un codeur (28) destiné à fournir un mouvement contrôlé précis de la courroie de transfert (18) par l'intermédiaire du mécanisme d'entraînement (26); et
    un ou plusieurs capteurs de courroie (44) par lesquels est détecté l'emplacement d'une ou plusieurs parties de la courroie de transfert (18), pour l'une ou l'autre parmi la configuration ou l'opération;
    dans lequel les une ou plusieurs barres d'impression (84) comprennent, chacune, une ou plusieurs têtes d'impression (222) destinées à projeter de l'encre (230) sur les une ou plusieurs pièces à traiter (42) situées sur la courroie de transfert (18);
    dans lequel le codeur (28) code le mouvement de la courroie de transfert (18) et, à la réception d'un signal de localisation (41) du capteur de pièce à traiter (40), le moyen de commande (20) est configuré pour:
    aligner l'emplacement de la pièce à traiter (42) ensemble avec l'emplacement et le mouvement connus de la courroie de transfert (18), et
    intégrer l'emplacement de la pièce à traiter (42) avec un ou plusieurs processus qui sont réalisés en ce qui concerne la pièce à traiter (42).
  7. Système d'impression (80) selon la revendication 6, dans lequel la tolérance est vérifiée automatiquement par les un ou plusieurs capteurs de courroie (44) sur base de l'un ou l'autre parmi périodiquement, en continu ou tel que souhaité.
  8. Système d'impression (80) selon la revendication 6, comprenant par ailleurs:
    un mécanisme de réglage de tension (90) comportant une paire de vis de guidage (92a, 92b) sur les côtés opposés de l'un des rouleaux cylindriques (16), destinées à régler l'un ou l'autre parmi le parallélisme ou la tension.
  9. Système d'impression (80) selon la revendication 6, dans lequel les un ou plusieurs capteurs de pièce à traiter (40) peuvent déterminer l'inclinaison de la pièce à traiter (42), dans lequel la pièce à traiter (42) est un carreau de céramique (42), et dans lequel le système d'impression (80) peut régler de manière contrôlable la délivrance (224) de l'encre (230) pour le carreau de céramique incliné (42).
  10. Système d'impression (80) selon la revendication 6, dans lequel les pièces à traiter (42) sont des carreaux (42), le système d'impression (80) comprenant par ailleurs:
    un ou plusieurs guide-pièce à traiter (102) en amont d'au moins l'une des une ou plusieurs barres d'impression (84) destinés à assurer que les carreaux (42) se trouvent au bon emplacement sur la courroie de transfert (18).
  11. Structure d'alignement de rouleaux (10) selon la revendication 1, dans laquelle la courroie de transfert (18) comprend:
    un substrat de courroie de transfert sans soudure (122) présentant une largeur définie et un axe longitudinal qui est perpendiculaire à la largeur, où le substrat de courroie de transfert sans soudure (122) présente une surface extérieure (124a) et une surface intérieure (124b) opposée à la surface extérieure (124a), la surface extérieure (124a) étant destinée à recevoir et supporter les une ou plusieurs pièces à traiter (42), et où la surface intérieure (124b) est suspendue entre les au moins deux rouleaux cylindriques (16); et
    une pluralité de cordons (128a) ou câbles (128b) continus incorporés longitudinalement dans le substrat de courroie de transfert sans soudure (122).
  12. Structure d'alignement de rouleaux (10) selon la revendication 11, dans laquelle la pluralité de cordons (128a) comprennent une fibre synthétique.
  13. Structure d'alignement de rouleaux (10) selon la revendication 12, dans laquelle la fibre synthétique comprend une fibre de para-aramide.
  14. Structure d'alignement de rouleaux (10) selon la revendication 11, dans laquelle chacun de la pluralité de câbles continus (128b) comprend une pluralité d'éléments de câble (142).
  15. Structure d'alignement de rouleaux (10) selon la revendication 11, dans laquelle une pluralité de dents ou d'arêtes (130) sont définies sur la surface intérieure (124b) du substrat de courroie de transfert sans soudure (122) et engrènent avec les dents correspondantes sur les rouleaux cylindriques (16).
EP13839015.8A 2012-09-21 2013-09-20 Systèmes améliorés d'alignement de rouleaux, et structures associées Active EP2897801B8 (fr)

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EP2897805B1 (fr) 2018-10-24
BR112015006431A8 (pt) 2019-02-12
BR112015006431A2 (pt) 2017-08-08
WO2014047512A3 (fr) 2014-06-19
WO2014047513A2 (fr) 2014-03-27
BR112015006431B1 (pt) 2021-08-03
EP2897805A4 (fr) 2016-11-23
BR112015006429A8 (pt) 2019-02-12
ES1108831Y (es) 2014-08-04
ITMI20130314U1 (it) 2014-03-22
ES2671552T3 (es) 2018-06-07
EP2897801B8 (fr) 2019-10-16
EP2897801A4 (fr) 2017-03-22
ES1108831U (es) 2014-05-08
BR112015006429A2 (pt) 2017-08-08
ITMI20130313U1 (it) 2014-03-22
WO2014047512A2 (fr) 2014-03-27
CN203957550U (zh) 2014-11-26
BR112015006428B1 (pt) 2022-01-25
BR112015006429B1 (pt) 2022-02-22
BR112015006428A2 (pt) 2017-08-08
CN203740459U (zh) 2014-07-30
BR112015006428A8 (pt) 2019-02-12
ES1135032U (es) 2014-12-23
EP2897802B1 (fr) 2018-03-07
EP2897801A2 (fr) 2015-07-29
EP2897802A1 (fr) 2015-07-29
ES2698533T3 (es) 2019-02-05
WO2014047515A1 (fr) 2014-03-27
EP2897805A2 (fr) 2015-07-29
CN203957551U (zh) 2014-11-26
CN203780074U (zh) 2014-08-20
WO2014047513A3 (fr) 2014-05-15
CN203792900U (zh) 2014-08-27
ES1135032Y (es) 2015-09-15
EP2897802A4 (fr) 2016-10-12

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