EP2072272B1 - Dispositif de transport pour des produits plats à imprimer - Google Patents

Dispositif de transport pour des produits plats à imprimer Download PDF

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Publication number
EP2072272B1
EP2072272B1 EP20080019554 EP08019554A EP2072272B1 EP 2072272 B1 EP2072272 B1 EP 2072272B1 EP 20080019554 EP20080019554 EP 20080019554 EP 08019554 A EP08019554 A EP 08019554A EP 2072272 B1 EP2072272 B1 EP 2072272B1
Authority
EP
European Patent Office
Prior art keywords
bearing plate
transport device
transport
print
plate
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
EP20080019554
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German (de)
English (en)
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EP2072272A3 (fr
EP2072272A2 (fr
Inventor
Wolfgang Muhl
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.)
Francotyp Postalia GmbH
Original Assignee
Francotyp Postalia 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
Priority claimed from DE102008032804.9A external-priority patent/DE102008032804B4/de
Application filed by Francotyp Postalia GmbH filed Critical Francotyp Postalia GmbH
Publication of EP2072272A2 publication Critical patent/EP2072272A2/fr
Publication of EP2072272A3 publication Critical patent/EP2072272A3/fr
Application granted granted Critical
Publication of EP2072272B1 publication Critical patent/EP2072272B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/12—Sheet holders, retainers, movable guides, or stationary guides specially adapted for small cards, envelopes, or the like, e.g. credit cards, cut visiting cards
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00—Franking apparatus
    • G07B17/00459—Details relating to mailpieces in a franking system
    • G07B17/00467—Transporting mailpieces
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00—Franking apparatus
    • G07B17/00459—Details relating to mailpieces in a franking system
    • G07B17/00508—Printing or attaching on mailpieces

Definitions

  • the invention relates to a transport device for flat goods to be printed according to the preamble of claim 1.
  • the invention is used in microprocessor-controlled printing devices and is suitable for franking machines and other mail processing devices.
  • the invention makes it possible to achieve a small offset of the dots in the printing, which in particular improves the machine readability of an impression of a franked mailpiece.
  • a transport principle with an overhead belt and a bottom-mounted sprung counter-pressure device, between which a mailpiece is clamped, is known from the patent DD 233 101 B5
  • a thermal transfer ribbon is not suitable as a conveyor belt.
  • the thermal transfer ribbon is disposed above a feed table over which the mail pieces are transported horizontally post-downstream.
  • the feed table has openings through which a driven counter-pressure roller passes through the mail item.
  • a transport principle with an overhead conveyor belt and a bottom-mounted sprung counter-pressure device, between which a mailpiece is clamped, is from the European patent EP 1 079 975 B1 (or FR 2790997 ) known.
  • a first transport belt looped between two rollers is arranged above a feed table, over which the mail pieces are transported horizontally.
  • the post-downstream roll of the first conveyor belt is its drive roller.
  • two deflection cylinders are arranged, wherein the one downstream arranged deflection cylinder for adjusting the belt tension is adjustable by means of a screw.
  • the feed table has openings through which pass upstream and downstream ever a spring-loaded counter-pressure roller on the mail item.
  • a second belt passes over these suspended counter-pressure rollers and at least one non-suspended roller and a drive roller of the second conveyor belt.
  • a printing device for an ink-jet franking machine wherein a franking print is printed by means of an ink-jet print head on a mail piece in the case of an approximately horizontal letter transport.
  • the ink jet print head is stationary behind a guide plate in a recess for printing arranged.
  • a transport device is a revolving conveyor belt, which is also arranged on the side of the guide plate.
  • a supporting and pressing device is arranged with a plurality of rollers, so that a fed mail piece between the rollers of the support and pressure device and the circulating conveyor belt is clamped.
  • the device can not avoid skewing the print carrier. Even an insufficiently tensioned conveyor belt or not exactly parallel alignment of the axes of those rollers on which the conveyor belt rotates, carries the aforementioned danger in itself. Due to the large number of roles of support and pressure device latter is very expensive.
  • connection error an offset in the print image (connection error) along a print length in the transport direction can occur, which complicates the machine evaluation of the print image.
  • the force effect of the further pair of rollers post-downstream of the inkjet printhead near the ejection leads to different path lengths and thus in the case of two mutually offset ink-jet printheads to the connection error in the printed image.
  • the print quality demanded in the context of current programs of the postal carriers - for example the Information Based Indicia Program of the USPS - would thus only be achievable with a low printing speed.
  • Another disadvantage is the small thickness of the print carrier, which can be printed by such a simple design printing device.
  • One from the EP 1 170 141 B1 Known device for printing a print carrier in the printing area uses in the power transmission area a driven transport drum and non-driven counter-pressure rollers or alternatively a non-driven counter-pressure conveyor belt.
  • a stationary ink jet printhead prints in the print area the downstream moving print carrier, wherein the ink jet print head is arranged axially to the transport drum.
  • the printing area is preferably about 1 inch and is spaced from the power transmission area, wherein the distance of the farthest pixel from the edge of the transport drum is smaller than the radius of the circumference of the transport drum.
  • the disadvantage is the low approximately linear contact of the mail piece surface to be printed with the transport drum and a spaced feed wheel for mailpieces.
  • the feed wheel is driven by a toothed belt from the transport drum. This causes a ⁇ x offset of the dots in the print image. Othogonal this results in a ⁇ y offset of the dots in the printed image, especially in very large mailpieces.
  • the structure also causes high manufacturing costs.
  • the invention has for its object to develop a transport device in a printing device for flat goods, which ensures a high print quality at a mean throughput of flat goods in cooperation with a microprocessor-controlled printing device.
  • the reliability of the printing device should be as high as possible and the printing offset in the x and y directions should be low.
  • postcards and on the other hand letters of the format C4 or B4 with a mail piece thickness up to 10 mm are to be processed.
  • the conveyor belt should be easy to change.
  • a cost-effective design with simple assembly of a guide and support device for a conveyor belt for transporting the flat goods should allow easy adjustment for adjusting the tape track and ensure safe storage of roles on which the conveyor belt runs.
  • the optimal belt tension should be set automatically.
  • a printing module is arranged counter to the direction of gravity over a printing window in the z direction of a Cartesian coordinate system.
  • a print image is generated by at least one print head.
  • at least one print head of an ink cartridge ejects ink droplets opposite to the z direction in the direction of gravity through the print window.
  • the printing window is arranged on the edge of a conveyor belt in a housing part, wherein the conveyor belt transports a flat good to be printed in the edge region during printing in the transport direction x past the at least one print head. The flat goods are pressed against the force of gravity to the conveyor belt in a support area.
  • a support region is advantageous, which is on both sides of a line, which is centered through the printing window transversely to the transport direction x in the y direction of the Cartesian coordinate system runs, is extended.
  • the conveyor belt is supported on a support plate which is arranged above the support and transport area between a molding plate and a bearing plate of a roller carrier, wherein the support surface of the support plate is larger than the surface of the pressure window, which is adjacent to the support plate.
  • the roller carrier consists of molding plates, the bearing plate, the support plate and a number of rollers for guiding the conveyor belt along a centrally indented oval curve.
  • the conveyor belt is stretched taut in the indented section by means of a tension roller.
  • a pull rod is arranged outside on the bearing plate.
  • the indented portion is at least partially formed for receiving the belly of at least one ink cartridge of a printing module and shaped accordingly.
  • the bearing plate has a surface structure corresponding to a desired bending characteristic and carries at both ends on an inner side a number of spacers for fixing the molding plates and on an outer side clamping means for biasing the bearing plate.
  • the conveyor belt has a width in the y direction of the Cartesian coordinate system which is wider than the width of the printing window.
  • the mailpiece transport device has a flat belt as a conveyor belt, by means of which the guide is improved during transport of the mail pieces.
  • the printing offset in the x-direction and y-direction is less than 100 ⁇ m in both directions.
  • the printhead By projecting the belly of the ink cartridge in the space created by the indentation and by omitting a second printing path for franking strips, the printhead is positioned relatively close to the conveyor belt edge when the printing module has been moved to the printing position. From the latter, the printing module can be moved in a conventional manner into a cleaning and sealing position by transverse movement means transversely to the mail piece transport direction. The cleaning and sealing position can advantageously be arranged close to the conveyor belt. This also reduced the size of the chassis and housing across the mailpiece transport direction.
  • the transport device is detachably mounted on the metal chassis of a drive device.
  • the latter has at least one motor for driving the conveyor belt.
  • the subdivision into a drive device and into a transport device advantageously enables an easily removable and compact transport device.
  • a component of the transport device is the preassembled roller carrier, which is completed with the conveyor belt to the transport device.
  • the roller carrier has at the post-current output end, i. at its right-hand end, a drive roller and a first idler pulley, and at the input end, i. at its left-hand end, an output roller and a second deflection or tensioning roller for a conveyor belt, which is looped in the mounted state by the rollers.
  • a secure storage of the rollers is ensured by the fact that at the ends of the roller carrier two molding plates are provided which are mounted on a bearing plate via spacers, the bearing plate carries at each of its two ends in each case three spacers. Downstream post two shafts and a spacer column are provided as spacers. By the support of two molding plates in three points and a subsequent three-point mounting a stable and torsionsarme storage of the molding plates is achieved via the spacers at the two ends. Although a first and second molding plate is attached via the spacers each at the two ends of the bearing plate, but not on the metal chassis of the printing device.
  • This lack of attachment of the molding plates on the metal chassis and a centrally inserted area to weaken the structure of the bearing plate of the roller carrier allows its deflection under appropriate load on the rollers by a first tensile force F1, which is exerted by the mechanical tension in a mounted conveyor belt.
  • the first tensile stress F1 counteracts an adjustable second tensile force F2, which is applied by a mounted on the outside of the bearing plate tie rod.
  • the metal chassis is designed as a frame with a base plate, with two orthogonally angled side walls and two transverse bars which lie in the frame transversely to the transport direction x for flat goods and are stored in the y-direction depending on an inwardly angled right angle tab of a side wall.
  • the bottom plate, the side walls and the two transverse rods are attached to a rear wall of the frame.
  • the two transverse rods each have at their other end remote from the rear wall a receiving means, for example in each case a receiving bore in the y-direction of their axes or other means.
  • the transport device is received via the aforementioned two receiving means, which are part of the crossbars of the frame and in the y direction, and fastened by means of releasable attachment frontally, for example by means of mounting holes of the crossbars or on the axes with external thread, preferably screwed.
  • a drive shaft is provided parallel to the cross bar, which is respectively mounted in a bearing on the rear wall and the inwardly angled right angle tab of the right side wall of the frame, wherein a drive pinion is fixed to the rear wall remote from the end of the drive shaft.
  • a conveyor belt for example, serves a flat belt.
  • the fixed bearing shafts must not be arranged costly exactly parallel to the axis to each other.
  • the bearing plate does not need to be redesigned at a higher belt tension, because the tensile force F2 exerted by the tie rod compensates for the first tensile stress F1 and thus the deflection with correct adjustment.
  • This advantageously allows a cost-effective and simple construction.
  • FIG. 1 is a plan view of a simplified illustration 1 'of a known transport device of the first type, with the arrangement of rollers and ink cartridges removed for the sake of simplicity.
  • a mail piece 10 ' is pressed by a number of - from above not visible and therefore dashed lines - support strips SL1', SL2 'and SL3' from below to a conveyor belt 2 'and transported during printing in the transport direction x'.
  • the width W1 of the conveyor belt 2 'in the y'-direction ortogonal to the transport direction x' is of the order of magnitude of a printing window 3 'for at least one print head.
  • the mail piece 10 ' is initially pressed by three support strips SL1', SL2 'and SL3' from below to the conveyor belt 2 '.
  • the printing window 3 ' is arranged in a known manner in a - not shown - housing part and is spaced from the support area. Under support area is that area to understand in which the mail piece the mailpiece transport device is pressed. In the course of mailpiece transport, the number of effective support rails decreases as the mailpiece is transported away from the support area. The resulting deteriorated leadership leads to an offset of the mail piece, wherein the offset mail piece drawn in dashed lines and the offset has been exaggerated for better clarity.
  • the support strips are designed as sprung and pressable support wheels or rollers.
  • the center of the printing window 3 ' is indicated by a line 4', which is orthogonal to the transport direction x ', ie in the y'-direction and is spaced in the x'-direction from the support region.
  • FIG. 2 is a plan view of a simplified illustration 1 * of a known transport device of the second type, wherein for the sake of simplicity the arrangement of ink cartridges has also been omitted.
  • a mail item 10 * is pressed from below by a transport drum 2 * from below, by means of only one support bar SL *, which is not visible from above and therefore shown by dashed lines, and transported in the transport direction x * during printing.
  • the width W2 * of the transport drum 2 * in the transverse direction, ie in the y * direction, is greater than that of a printing window 3 * for at least one print head.
  • the support strips are designed as sprung and pressable support wheels or rollers.
  • a driven transport drum and non-driven counter-pressure rollers or alternatively a non-driven counter-pressure conveyor belt is used in the power transmission area.
  • the counter-pressure device consists of a sprung rocker with conveyor belt to increase the support area.
  • the center of the printing window 3 * is indicated by a line 4 *, which also runs through the center of the support area.
  • Their course is orthogonal to the transport direction x *, ie in the y * direction, because the print window 3 * is spaced apart from the support area or counterpressure area only in the y * direction, but not in the x * direction.
  • the offset is at most 110 ⁇ m.
  • FIG. 3 is a plan view of a simplified representation 1 of a transport device of the type proposed shown.
  • the center of the printing window 3 is again indicated by a line 4, which also extends through the middle of a support strip SL3.
  • the conveyor belt 2 of the transport device and the pressure window 3 are adjacent here next.
  • the offset .DELTA.x, .DELTA.y is reduced by another 10 to 30% when the mailpiece 10 is transported in the transport direction x during printing, if further support strips SL1, SL2 and SLn are pressed from below on a mail piece 10 on both sides of the drawn line 4, and when the conveyor belt 2 rests against the top of a support plate.
  • FIG. 4 is a section through a front view of the simplified representation 1 of the transport device according to the in the FIG. 3 proposed type shown.
  • the conveyor belt 2 of the transport device is fed back via a medium-sized roller 5 and a large encoder and deflection roller 6 in a loop.
  • the conveyor belt 2 runs here above and below a support plate 9, which supports the conveyor belt 2 in that section which runs back to the driven medium-sized roller 5.
  • the pulling strand of the conveyor belt is supported by the smooth support plate 9 at least from the middle of the mail piece transporting device in the transporting direction.
  • the small guide roller 8 also serves as a tension roller for tensioning the conveyor belt 2.
  • the non-driven large roller 6 is part of an encoder (not shown).
  • a mail piece 10 is pressed by a number of support strips SL1, SL2, SL3 and SLn from below to the conveyor belt 2 and transported during printing in the transport direction x.
  • the at least one ink cartridge 11 is used in a microprocessor-controlled printing device with a printing window, through which the at least one inkjet printhead 11.2 of the at least one ink cartridge 11 injects ink droplets onto the surface of a mail piece 10 or flat goods to be printed.
  • the x-direction is the transport direction of the mail piece 10 or flat good, which is transported lying on the side not zubetikenden.
  • the y-direction points backwards to the back and z-direction up to the top of the microprocessor-controlled printing device.
  • the Cartesian coordinate system has a transport direction x, a direction orthogonal thereto in relation to gravity as well as a direction y orthogonal to the transport direction x.
  • the - not shown - pressure window is arranged transversely to the support plate 9 in the y direction.
  • the at least one ink cartridge 11 has a forward bulge 11.1 and a downward ink jet print head 11.2.
  • the ink cartridge 11 is arranged in the Cartesian coordinate system so that, in the printing position, the bulge 11.1 of the ink cartridge 11 is moved forward, i. opposite to the transverse direction y and upwards, i. directed against the force of gravity in the direction of transport x orthogonal direction z.
  • FIG. 5 is a perspective view of the printing device with the proposed transport device, with chassis and with print module shown in the print position.
  • the transport device 20B is an integral part of a postage meter machine and is disposed above a mail piece feed table (not shown).
  • the printing module consists of a printing carriage 24, a contacting and driving unit for the ink cartridges and the ink cartridges themselves, which are each equipped with an inkjet printhead.
  • the print carriage 24 is arranged transversely on two transverse rods 271, 272 and can move in the y direction transversely to the mailpiece transport direction (x-direction) are moved within a box-shaped space, which is formed by a metal chassis.
  • the metal chassis consists of a right side wall 25, which merges into a tab 23 which is angled towards the front by 90 °.
  • the metal chassis consists of a left side wall 26, which merges into a tab 29 which is angled towards the front by 90 °.
  • the right side wall 25 and the left side wall 26 are fixed to a rear wall 28. On the rear wall 28, for example by screws via crossbars 271, 272 a simple embodiment of a bearing plate 22 is fixed, which carries a number of rollers on which the flat belt 2 is stretched.
  • the flat belt 2 of the mailpiece transport device has a large transverse rigidity and is guided over two outer by the bearing plate 22 partially concealed pulleys 5 and 6, which are respectively arranged at the ends of the bearing plate and molding plates.
  • the flat belt 2 on the one hand passes under the downwardly facing support surface of the support plate and on the other hand, between the belly of the ink cartridges 11, 12 and the upwardly facing surface of the support plate (not visible) returned.
  • the printing module projects in the printing position partially in the space between the pulleys, with the ink jet heads of the two ink cartridges located outside the transport area - not visible - pressure window.
  • the left side wall 26 has a greater length in the y-direction than the right side wall 25, wherein the angled tab 29 of the left side wall 26 in the x-direction (transport direction) and the angled tab 23 of the right side wall 25 opposite to the x-direction ,
  • the angled tab 23 of the right side wall 25 extends to the molding plate 212 zoom and the angled in the x-direction tab 29 of the left side wall 26 extends to the inside of the bearing plate 22 zoom.
  • the molding plates 211, 212 and the bearing plate 22 are spaced apart according to the width of the flat belt 2.
  • the bearing plate 22 has an inwardly smooth base plate 223 with forwardly bent edge strips 222 and ribs 224 for the purpose of reinforcement and production of sufficient torsional rigidity and tensioning means 225, 226, 227 and 228 and a pull rod 221 on the front in order to absorb the tensile forces which act on the bearing plate 22 during tensioning of the flat belt 2 and to adjust or compensate for the distortion or bending of the bearing plate.
  • the molding plates also have an inwardly smooth base plate.
  • the distance between the molding plates 211, 212 and the bearing plate 22 is - in a manner not shown - on the one hand by the rollers and their bearing axes and on the other hand by the between the mold plates 211, 212 and the bearing plate 22 arranged a support plate (hidden) guaranteed.
  • the molding plates 211, 212, the bearing plate 22, the support plate and the rollers 5, 6 (and hidden rollers 7 and 8) are assembled into a roller carrier.
  • the driven conveyor belt forms a recessed from above oval loop, wherein the indentation is formed by (hidden) additional guide rollers 7, 8 in front of and behind the ink cartridges.
  • the conveyor belt is guided in both directions under the belly of the ink cartridges, wherein the pulling strand of the conveyor belt from the center of the transport device in the transport direction is supported by an opposite to the z-direction, ie downwardly facing smooth support surface.
  • the front wall of the mail piece transport device is designed as a one-sided bearing plate 22 for the deflection rollers and has a metallic pull rod 221, by means of which the counter pull force is applied to the belt tensile force of the flat belt 2.
  • the tie rod is in the x direction, i. to the mailpiece transport direction, arranged in parallel. In this arrangement, the ink cartridges can be removed directly upwards, without having to take a previously provided separate position.
  • the transport device with printing module is used in a microprocessor-controlled printing device, for example in a franking machine, for transporting mail items.
  • a franking machine consists - in a manner not shown - known, inter alia, an electronic part (meters) and the mail piece transport device with an electronic control and a pressure device.
  • the - not shown - from below resiliently pressing against the mailpiece pressure device is below arranged a known feed table.
  • a keyboard and a display unit of the meter are connected to the electronic part in a manner not shown.
  • the electronic control is known on the one hand with an encoder and on the other hand with a motor of the mail piece transport device to the control in - not shown - connected.
  • FIG. 6 shows a perspective view of the proposed transport device and a drive device of the transport device of the printing device from the front right top in exploded view.
  • the drive device 20A of the transport device 20B of the printing apparatus consists of a base plate 31 of a metal chassis and gear and drive means arranged thereon.
  • the latter include at least one gear 32 and a motor 33 with a corresponding power transmission means (not shown).
  • the worm wheel 32 may be replaced by a pulley, toothed belt wheel, or equivalent means.
  • a distance between the gear and drive means and the transport device is bridged by a shaft 233 on the metal chassis, wherein the distance results from the dimensions of the printing device.
  • an ink printing device (not shown) is used which has a printing carriage for a printing module. Then also a - not shown - drive device of the print carriage is arranged on the metal chassis.
  • the metal chassis of the drive device 20A of the transport system of the printing system is designed, for example, as a frame consisting of the base plate 31 with a U-shaped 90 ° inwardly angled side walls 25, 26, wherein a right side wall 25 merges into a tab 23, the Front is angled 90 ° inwards and wherein a left side wall 26 merges into a tab 29 which is angled towards the front by 90 ° inwards.
  • the base plate 31, the right side wall 25 and the left side wall 26 are fixed to a rear wall 28. On the rear wall 28 are, for example fastened by screws, two equal length crossbars 271, 272, which are passed through each a hole 230, 290 in the tab 23, 29 to the front.
  • the crossbars 271, 272 serve on the one hand for guiding the method of printing carriage transversely to the transport direction and on the other hand for fixing the roller carrier of the transport device 20B for - not shown - mail pieces or other flat goods to be printed.
  • the word "flat" refers to the dimension of the commodity in the z-direction of a Cartesian coordinate system.
  • the transport direction is the x-direction.
  • the crossbars 271, 272 are transverse to the transport direction, ie, parallel to the y-direction, and the printing apparatus stands on a table or is arranged above the table in the z-direction within a postage meter or other flat-goods processing apparatus.
  • the roller carrier of the transport device 20B is attached to the crossbars 271, 272 of the frame of the printing device and attached.
  • the mounted on the roller carrier conveyor belt 2 is driven by a drive roller 5, which has an outer toothing at one end.
  • the drive energy is supplied by a drive pinion 232 mounted on a drive shaft 233, which engages with the external teeth as soon as the roller carrier is attached to the transverse rods 271, 272.
  • the drive shaft 233 is rotatably mounted in a first bearing 231 of the tab 23 and in a second bearing 281 of the rear wall 28.
  • the left side wall 26 has a greater length in the y-direction than the right side wall 25, wherein the angled tab 29 of the left side wall 26 in the x-direction (transport direction) and the angled tab 23 of the right side wall 25 opposite to the x-direction ,
  • the roller carrier of the transport device 20B consists of a bearing plate and two molding plates, wherein the molding plates 211, 212 and the bearing plate 22 via spacers (partially hidden) corresponding to the width of the conveyor belt 2 are spaced apart.
  • the angled tab 23 of the right side wall 25 extends to the molding plate 212 zoom and the angled in the x-direction tab 29 of the left side wall 26 extends to the inside of the bearing plate 22nd approach.
  • the molding plate 212 has at the top a first opening 2121 for receiving the drive pinion 232 and an adjacent second opening 2122 for inserting the crossbar 272 of the right tab 23.
  • the bearing plate 22 is in principle like the simple bearing plate after Fig. 5 constructed and has in the upper region openings 2201 and 2202 for releasably securing the bearing plate 22 to the crossbars 271, 272 by means of screws 22011 and 22021. But it has a more complex structure on the front, as the simplified design variant. Alternatively, the attachment via lock washers, split or quite different, but the attachment of the bearing plate 22 remains releasable.
  • a downwardly disposed non-visible spacer to the first molding plate 211 and an upper spacer 208 to the second molding plate 212 is formed as a spacer column.
  • the bearing plate 22 has in the lower or upper region openings 2203 and 2208 for attachment of these spacer columns.
  • press and shrink connections are provided.
  • the spacer pillars may alternatively have holes with an internal thread or pins with an external thread at their ends for attachment by means - not shown - have screws or nuts.
  • the attachment can also be done completely different form and locks.
  • the ends of the spacer columns are adapted and shaped accordingly.
  • a spacer 204 to the first molding plate 211 is formed as a spacer column and also serves as a bearing shaft for a rocker 200.
  • the bearing plate 22 has in the upper part of an opening 2204 for attachment of this spacer column.
  • the spacers are all connected to one bearing plate, with three spacers concentrically arranged at each of the two ends of the bearing plate.
  • two bearing shafts and a spacer column are provided as spacers in each case.
  • the bearing plate 22 has in the central region openings 2205 and 2206 for fixing the bearing shafts of the rollers 5 and 6.
  • the rollers have at their two ends depending on an internally arranged bearing (not visible).
  • needle roller bearings or ball bearings can be used to reduce the rolling resistance.
  • a first deflection roller 8 is arranged next to the driven roller 6 and between a second shaped part plate 212 and the bearing plate 22, a second deflection roller 7 is arranged next to the drive roller 5.
  • the conveyor belt is guided in the form of a loop such that a sufficiently large space is created between the deflection rollers for the pressure module (not shown) moved into a printing position.
  • the first deflection roller 8 is rotatably mounted on the rocker 200, which is mounted space-saving between the first mold part 211 and the bearing plate 22, because at least the molding 211 has a molded-in cavity in the inner wall 210, which is required for movement of the rocker 200, when the conveyor belt is mounted on the roller carrier 20.
  • the bearing plate 22 carries a number of rollers on which the conveyor belt 2 is stretched.
  • the conveyor belt 2 is formed as a flat belt.
  • the flat belt of the mailpiece transport device has a large transverse rigidity and is guided over two outer by the bearing plate 22 partially hidden input and output rollers 5 and 6, which are respectively arranged at the ends of the bearing plate and molding plates. In this case, the flat belt on the one hand passes under the downwardly facing support surface of a support plate 9 and on the other hand, between the pressure module moved in printing position and the upwardly facing surface of the support plate (not visible) returned.
  • the bearing plate 22 has in the zx plane a smooth base plate 2200 with forwardly shaped in the z-direction extending frames 2241, 2242, 2243, 2244 and possibly further - not shown - frames 224i and extending in the x-direction ribs 2221, 2222nd , 2223, 2224 and possibly further - not shown - ribs 222j for the purpose of reinforcement and production of sufficient torsional stiffness and also clamping means 225, 227 and clamping and adjusting means 226, 228 and a pull rod 221 on the front to absorb the tensile forces . which act on the bearing plate 22 during tensioning of the transport belt 2 and adjust or compensate for the distortion or bending of the bearing plate.
  • the ribs 2221 and 2224 form in the region of the gap a forwardly bent edge strip with a shaped weak point 229 of the structure with a reduced width of the upper edge strip, starting on the base plate 2200 from the transition to the first rib 2221 up to the transition to the fourth rib 2224 increases the width of the weak point gradually, wherein the fourth rib 2224 forms the upper edge strip in the region of the intermediate space.
  • embodiments of the bearing plate having a plurality of ribs are possible, with one or more weak points being incorporated at the same or a different location of the structure of the bearing plate to ensure a bending of the bearing plate 22 during clamping of the conveyor belt 2 in a defined manner.
  • the bearing plate 22 carries a first pin with the first opening 2201 for mounting the bearing plate on the first crossbar 271, wherein the pin is disposed on the one hand between the third rib 2223 and fourth rib 2224 and on the other hand between the third rib 2243 and fourth rib 2244.
  • the bearing plate 22 carries a second pin with the second opening 2202 for mounting the bearing plate on the second crossbar 272 on the one hand between the third rib 2223 and fourth rib 2224 and on the other hand between the first rib 2241 and second rib 2242 is arranged.
  • a third opening 2203 for securing the non-visible spacer below is placed in a third pin located between the last and the penultimate frame at the end of the bearing plate 22 and between the first rib 2221 and the second rib 2222.
  • a fourth opening 2204 for attachment of a spacer 204 is placed in a fourth pin located between the last and penultimate frames at the left end of the bearing plate 22 and on the fourth rib 2224 near the penultimate frame is.
  • the first rib 2241 at the right end of the bearing plate 22 carries between the second rib 2222 and third rib 2223 a fifth pin with a fifth opening 2205 for mounting the bearing shaft of the drive roller 5.
  • ribs and ribs of the bearing plate 22 form nodes at their intersections in FIG whose proximity storage of spacers in openings is particularly strong and stable.
  • a sixth pin with a sixth opening 2206 for attachment of the bearing shaft of the driven pulley 6 is placed exactly in the node between the last frame at the left end of the bearing plate 22 and the third rib 2223.
  • a seventh opening 2207 for attaching a bearing shaft of the diverting pulley 7 is placed in a seventh pin disposed between the first divider 2241 and second divider 2242 at the right end of the support plate 22 and between the first rib 2221 and second rib 2222.
  • An eighth opening 2208 for attachment of the spacer 208 is placed in an eighth pin located between the first rib 2241 and second rib 2242 at the right end of the bearing plate 22 and between the third rib 2223 and fourth rib 2224 near the second rib.
  • a ninth opening 2209 for attachment of a locking pin 209 is placed in a ninth pin located between the last and second to last ribs at the left end of the bearing plate 22 and between the third rib 2223 and fourth rib 2224 near the fourth rib 2224.
  • FIG. 7 is a perspective view of the proposed transport device 20B from the top right rear shown in exploded view.
  • the first molding plate 211 has in the zx plane a smooth base plate 2110 on the inside facing the conveyor belt with a cavity 210 of the base plate for a belt tensioning mechanism.
  • the width B 211 depends on the material parameters and is greater at low strength of the material than at high strength.
  • pins with holes are arranged outside the circumference, the base plate 2110 being bounded below by a straight edge strip 2111 and upwardly by a straight edge strip 2112, both having the same width B 211 have and at its one end in the curved edge strip 2115 pass.
  • the upper straight edge strip 2112 drops in the x direction in a step 2117 onto a projection 2118 of width B 211 parallel to the lower edge strip 2111 at the other end of the first molding plate 211.
  • the outer side of the base plate is structured by an outer structure, which in a manner known per se enhances the stability and strength of the molded part plate 211 under load, which occurs in particular when the transport belt 2 is tensioned.
  • the pins with openings are formed on the outside in the y-direction, wherein the pins and the outer structure, the edge strips do not protrude in their width.
  • the pins, outer structure and the width of the edge strips extend parallel to the y-direction, when the molding plate 211 is completed with the bearing plate 22 to the roller carrier 20 is attached to the drive device of the transport device.
  • the openings in the pins are then also parallel to the y-direction.
  • the number of openings of the first and second mold plate 211 and 212 corresponds approximately to the number of openings of the bearing plate 22 for the spacers 203, 204, 206 and 205, 207, 208 and for other components, such as the locking pin 209, etc. and for the - not shown - right crossbar of the drive device of the printing system.
  • the spacers 203, 204, 206 and 205, 207, 208 are fastened to the bearing plate 22 via fastening means 22021, 22041, 22061 and 22051, 22071, 22081.
  • the first molding plate 211 carries a sixth opening 2116 centrally in a pin and the edge strip 2115 which extends around the sixth opening 2116 in a radius, for example, approximately equal to the output roller 6, wherein the sixth opening 2116 for fixing the bearing shaft 206 of the driven pulley 6 is provided.
  • the spacers 203, 204, 206 fastening means 21131, 21141, 21161 are provided for fixing the first molding plate 211.
  • a in the zx plane on the inside facing the conveyor belt smooth base plate 2120 of the second molding plate 212 carries a total of five openings with molded edge strips 2123, 2126 and 2129.
  • the width B 212 extends parallel to the y-direction, when the molding plate 212 with the Bearing plate 22 to the roller carrier 20 is completed attached to the drive device of the transport device. It is envisaged that the first opening 2121 of the second molding plate 212 is formed with a sufficiently large cross section for the drive pinion (not shown) and that the second opening 2122 has a sufficiently large cross section for passing the second transverse rod (not shown).
  • the molded-on edge strip 2123 delimits a fifth opening 2125 and both aforementioned openings 2121 and 2122 downstream, ie in the x-direction and z-direction (upwards) and closes on the one hand with a straight-sided straight edge strip 2126, ie against the x-direction and on the other hand a lower straight edge strip 2129. All edge strips have the same width B 212 , which is dimensioned so that a grip protection is provided to the drive pinion.
  • openings 2125, 2127, 2128 are provided in the second molding plate 212 and fastening means 21251, 21271, 21281 for attachment to the second molding plate 212.
  • the spacers 203, 204, 206 and 205, 207, 208 attached to the bearing plate 22 and a support plate 9 inserted between the loop of the conveyor belt 2 and placed on the bearing plate 22.
  • the support plate 9 has on the conveyor belt 2 side facing a sliding surface, ie on that side of the support plate 9, against which the conveyor belt 2 is pressed over a large area.
  • the sliding surface has a low coefficient of friction in the range 0.1 ⁇ 10 -6 ⁇ ⁇ 0.3 ⁇ 10 -6 between the sliding surface of the support plate and the running side of the conveyor belt 2. This reduces the friction and thus the necessary drive energy used to move the conveyor belt 2 .
  • Different materials can be used to create the sliding surface of the support plate, for example plastic and / or metallic materials.
  • lubricating films may be applied by gluing and / or sliding layers by polishing.
  • the conveyor belt 2 has a rough structure on the outer surface (transport side) and has adhesive properties.
  • a very high coefficient of friction in the range 0.9 ⁇ 10 -6 ⁇ ⁇ 1.3 ⁇ 10 -6 between the transport side and the flat Good is advantageous to transport the letter as possible without slippage, which decides the impression quality influenced.
  • rough structures can additionally be applied or adhesive properties can be generated.
  • a roughening of the mantle surface can be done for example by sandblasting, which advantageously prevents slippage of the conveyor belt 2.
  • partially or completely applied rubber coatings on the mantle surface are suitable.
  • the constructive created by the pulleys high wrap of the conveyor belt 2 to the drive roller 5 is greater than 230 ° and thus additionally prevents the slippage of the conveyor belt.
  • the output roller 6 is provided larger in diameter than the drive roller 5 to be able to introduce up to 10 mm thick flat goods easily into the transport device. By the resulting Flatter wedge angle also reduces the drive energy required when drawing in thicker flat goods.
  • a band tensioning mechanism is designed as a rocker 200.
  • the latter consists of two external angle levers 201 and 202, which are spaced from each other via a center plate 2001 and at one end of the lever arm bearing a bearing shaft 2008 with a guide roller 8.
  • the respective other lever arm of the angle lever 201, 202 is centered at approximately 90 ° and serves for locking together with the locking pin 209.
  • the angle lever 201, 202 carry in the Abwinkel Scheme one opening 2011, 2021 for storage on the formed as a bearing shaft spacer 204th ,
  • rollers 5, 6, 7 and the rocker 200 are plugged onto the spacers 205, 206, 207 and 208 formed as bearing shafts, the conveyor belt 2 is placed on the rollers and then the shaped part plates 211 and 212 with the smooth belt facing the conveyor belt Laid inside and fastened.
  • the rollers 5, 6 and 7 have a running surface with the width B L > B B (width of the conveyor belt) and each have in the middle a needle bearing on both sides. Only the needle bearings 51, 61 and 71 on the back are in the FIG. 7 visible, noticeable.
  • the drive roller 5 additionally has an external toothing 53 which projects into an opening (not visible) of the base plate 2120 of the second shaped part plate 212.
  • the conveyor belt 2 wraps around the arranged on the ends of the roller carrier rollers 5, 6 due to the impressing from above the oval loop pulleys 7, 8.
  • the conveyor belt is guided in both directions under the - not shown - pressure means along, wherein the pulling Run of the conveyor belt from the center of the transport device in the transport direction by the downwardly facing smooth support plate 9 is supported.
  • the rocker 200 is rotatably mounted on the bearing shaft 204 after assembly and disposed between the first molding plate 211 and the bearing plate 22.
  • the bearing plate 22 and the first molding plate 211 both have a cavity 220 and 210 formed on the smooth surface of the base plates 2200 and 2110 facing the conveyor belt. The cavities are required to move the rocker 200 when the conveyor belt is mounted on the roller carrier 20.
  • the roller carrier 20 carries a number of rollers on which the conveyor belt 2 is tensioned by means of the rocker 200, wherein the rocker arm 200 is fixed by means of locking pin 209.
  • the first molding plate 211 has a hole 2119 and the bearing plate 22 has a hole 2209 for passing the locking pin 209.
  • the first and second molding plate 211, 212 may each have a rim of lesser width than the width B 22 of the edge of the bearing plate 22 their ends.
  • the bearing plate has first and second holes 2201 and 2202 for attaching the transport device to the associated drive device. In the area between the two holes, the bending strength of the bearing plate 22 is defined defined by a constructed strengthening and / or weakening of the structure. An increased width of the edge strip 2224 results in a constructed strengthening, and a reduced width of the edge strip in the region of the cavity 229 results in a designed weakening of the structure of the bearing plate 22.
  • the bearing plate 22 has at least one inwardly smooth base plate 2200 with front edge strips bent to reinforce and produce sufficient torsional rigidity, tensioning means 225, (227 hidden) and clamping and adjusting means 226, 228 and a pull rod 221 on the front to the To absorb tensile forces acting on the bearing plate 22 during tensioning of the transport belt 2 and to set or compensate for the distortion or bending of the bearing plate defined. It is advantageous if the drawbar 221 is designed as a hexagon screw.
  • the clamping and adjusting means 226 is as a screw head and the clamping and adjusting means 228 is formed as a nut.
  • a defined deflection of the bearing plate 22 can alternatively be achieved by a specific order and arrangement of several reinforcements and weakenings of the structure of the bearing plate 22.
  • a curve of the deflection of the bearing plate 22 can be achieved according to a certain mathematical function under load. For example, a deflection of the bearing plate 22 with a logarithmic or potential course as well as an absolutely rectilinear uniform course.
  • FIG. 8 is a perspective view of the roller carrier of the transport device from the front right above shown.
  • the roller carrier 20 consists of the bearing plate 22, the first molding plate 211 and the second molding plate 212 and the spacers 203, 204, 206 and 205, 207, 208.
  • the base plate 2110 of the first molding plate 211 has on the conveyor belt inside facing a cylindrical bag 2100, which is arranged in a circle around the spacer 206 and to the left of the cavity 210 for the belt tensioning mechanism. Between the edge strips 2112 and 2115, a top-accessible compartment 214 for an electronic module is incorporated. In the area of the cavity 210 near the compartment 214, a hole 2119 for the locking pin is incorporated in the base plate 2110.
  • the cavity 210 is open to the edge strip 2117 down to the projection 2118, which is arranged parallel to the lower edge strip 2111.
  • the base plate 2120 of the second molding plate 212 has on the inner side facing the conveyor belt a cylindrical pocket 2124 which is arranged in a circle around the spacer 205 and to the left of the first opening 2121 so close that the opening passes into the pocket, while the first 2121 is spaced from the second opening 2122.
  • the pocket 2124 is bounded below by the edge strip 2129 and the first 2121 and the pocket 2124 are bounded to the right and up by the edge strip 2123.
  • the base plate 2120 is bounded to the left by the edge strip 2126.
  • the bearing plate 22 has a post formed upstream post web 224 having a width B 224 that merges seamlessly downward (to the tabletop) with the bottom marginal strip 2221, with the edge strip 2221 bounding the base plate 2200 downwardly and formed forwardly with a width, which rises in the x-direction to the middle.
  • the edge strip 2226 which is up to the middle of the bearing plate, is connected to the support web 224 at the left end of the bearing plate 22 22, the base plate 2200 is limited upward and is also formed forward with a width that increases in the x direction to the middle.
  • the outer edge strips 2221 and 2224 may also be ribs of a forwardly formed structure on the base plate 2200, with the ribs extending in the x direction. Strengthening of the structure is achieved by integrally molded ribs 2221, 2222, 2223 and 2224 and ribs 2241, 2242, 2243, 2244 and 2245 forming a cell structure with the ribs extending in the y direction.
  • honeycomb structure which has sidewalls which are not parallel to the axes of the Cartesian coordinate system, i. which take a different course than described above.
  • a weakening of the structure is incorporated in the edge strip 2224, which limits the base plate 2200 in the middle region of the bearing plate 22 upwards.
  • the weakening is achieved here by a compartment-shaped cavity 229 on the inside of the base plate 2200, which reduces the width of the upper marginal strip and that of the ribs between the second 2242 and third rib 2243 to the width B 229 .
  • weakening of the structure is conceivable in another way, such as reducing the wall thickness of the cell or honeycomb walls in accordance with the material parameters (e.g., Young's modulus).
  • the edge strip 2221 which delimits the base plate 2200 downwards
  • the edge strip 2224 which delimits the base plate 2200 in the middle region of the bearing plate 22 in a post-edge edge strip 2225.
  • the width of the forwardly formed edge strips 2221 and 2224 between the second and first ribs in the x direction from the width B 222 to the width B 22 can be reduced.
  • pins connected to the cell or honeycomb structure are provided with openings 2201, 2202, Bearings of the drive and driven rollers are clamping devices 225 and 227 molded.
  • the pull rod 221 is shown cut on one side to illustrate the position of the opening 2203 and its arrangement in a pin, whereas the position of the opening 2207 and its arrangement is concealed in a pin by the there drawn uncut drawbar 221.
  • the width of the second rib is increased at its two ends and passes into the clamping means 225 and 227, which project beyond the structure to the front and each having an opening for a plug-in in the x-direction drawbar 221 on the front of the bearing plate 22.
  • clamping and adjusting means 226, 228 the drawbar 221 is tensioned on the front in order to absorb the tensile forces acting on the bearing plate 22 during tensioning of the conveyor belt 2. In this way, it is possible to adjust the distortion or bending of the bearing plate defined or compensate.
  • the bearing plate 22 has a honeycomb or cell structure on the front, which contributes to material savings and weight savings, but it is still not flexurally and Torsionsarm designed. On the contrary, it allows a defined deflection.
  • the FIG. 9a shows a plan view of the concave curved in the y direction roller carrier of the transport device.
  • Such a (exaggerated) deflection of the roller carrier 20 is formed with a corresponding load by a force exerted by the pull rod 221 mechanical tension, which is transmitted via the clamping means 225 and 227 on the two ends of the bearing plate 22.
  • the tensioning and adjusting means 226, 228, the tension can be adjusted.
  • the first molding plate 211 and the second molding plate 221 are fixed to the bearing plate 22 via the spacers 203, 204, 206 and 205, 207, 208. This can be done by screws or press-fit.
  • the FIG. 9c shows a schematic representation of the force effect on the bearing plate 22.
  • the first tensile stress F1 which is exerted by the mechanical tension in a mounted conveyor belt on the spacers on the bearing plate 22, counteracts an adjustable second tensile force F2, by a on the outside of the Bearing plate mounted tie rod
  • FIG. 9b shows a plan view of the convexly curved roller carrier of the transport device.
  • Such a (exaggerated) deflection of the roller carrier 20 is formed with a corresponding load on the rollers (not shown) by a mechanical tension of the assembled conveyor belt (not shown).
  • a conveyor belt here is a flat belt used.
  • the unilaterally acting first tensioning force F1 and second tensioning tensioning force F2 cause a deliberate deflection of the bearing plate 22 FIG. 9a or 9b , depending on the belt tension or tension by the tie rod 221.
  • 9a are the left and right fixed spacers, which are designed as bearing shafts for the pulleys, no longer perpendicular and parallel to each other, they tilt inwards. However, those spacers, which are each connected to the same molding, continue to be parallel to each other axis.
  • the flat belt does not find a stable track as long as the belt tensile forces can not be evenly distributed across the belt width. That is, a mounted conveyor belt runs due to the non-axially parallel groups of spacers at the two ends of the bearing plate 22 intentionally to the molding plates.
  • a Gegenzug-device with a threaded tie rod which is arranged externally on the opposite side of the bearing plate side, can be constructed by turning the clamping and adjusting means 226 of the Gewindzugstange 221 a counterforce to the belt tension.
  • the deflection of the bearing plate goes back and can also go in the opposite direction of deflection.
  • the advantages are that no additional adjustable belt track elements must be used and all those bearing shafts simultaneously act as belt track elements on which the rollers run. Likewise, the fixed bearing shafts need not be arranged costly exactly to each other.
  • the bearing plate does not need to be redesigned at a higher belt tension, because the retraction device compensates for the deflection.
  • the bearing plate has firmly pressed in each case three fixed spacers designed as bearing shafts on the left and right end of the bearing plate. These are used to attach the first and second molding plate on the left and right end of the bearing plate frontally (with a screw). This creates a three-point attachment that prevent rotation of the molding plates to the bearing plate.
  • the pulleys are preferably designed crowned or cylindrical and each provided with a chamfer at the edges. They stabilize the track of the conveyor belt in addition to transversely introduced lateral forces and disturbances, which has a direct positive effect on the print quality.
  • the conveyor belt runs faster back to its preset track and facilitates the adjustment and adjustment.
  • the flat belt with fabric insert has a given belt length and tolerance, also a given tensile force for 1% belt elongation, this results in a known belt length. This specifies the center distances of the pulleys on the bearing plate exactly.
  • One of the pulleys is mounted in a rocker. The rocker is pivoted away. When the belt is laid, the rocker is unlocked from its lock and swung away, also are the molding plates, not yet mounted, that easy, the belt can be used. The molded panels are mounted, then the rocker is pivoted back into its lock and automatically tensions the belt to its optimum belt tension. The locking takes place via a plug-in axle.
  • the transport unit is removed from the machine and removed the thru axle for locking the belt tensioner. Subsequently, the molding plates are removed. The belt tensioner swings away and the belt can now be easily changed.
  • the transport unit is assembled again.
  • the drive is activated and the belt track position adjusted by adjusting the counter-pulling device. This can be done by a service technician on site at the customer.
  • the clamping and adjusting means of the pull rod are designed as a screw or nut, with which the tracking of the conveyor belt in a range of 0 to ⁇ 10 mm can be adjusted freely.

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Claims (23)

  1. Dispositif de transport pour des produits plats à imprimer d'un appareil d'impression piloté par microprocesseur, avec une bande transporteuse (2) en appui et entraînée sur des tambours à paliers, ladite bande transporteuse s'étendant sur une certaine largeur dans le sens y d'un système de coordonnées cartésiennes et transportant dans la zone du bord dans le sens x des produits plats à imprimer en les faisant passer pendant l'impression devant au moins une tête d'impression d'un module d'impression, les produits plats étant appuyés dans le sens opposé à la gravitation contre la bande transporteuse (2) dans une zone d'appui, l'appareil d'impression pour l'au moins une tête d'impression (11.2) comportant une fenêtre d'impression (3), qui est agencée au bord de la bande transporteuse (2) dans une partie du boîtier de l'appareil d'impression, le module d'impression étant agencé au-dessus de la fenêtre d'impression (3) dans le sens z du système de coordonnées cartésiennes et dont l'au moins une tête d'impression (11.2) génère une présentation d'impression pendant l'impression dans le sens opposé au sens z dans la direction de la gravitation, et dont
    - la zone d'appui s'étend des deux côtés d'une ligne (4), qui chemine au milieu à travers la fenêtre d'impression (3) transversalement au sens de transport x dans le sens y du système de coordonnées cartésiennes, la bande transporteuse (2) étant soutenue par une plaque d'appui (9), qui est agencée au-dessus de la zone d'appui d'un support de rouleaux (20) entre une plaque moulée (211) et une plaque-support (22), la surface d'appui de la plaque d'appui (9) étant plus grande que la surface de la fenêtre d'impression,
    - le support de rouleaux (20) est constitué de plaques moulées (211, 212), de la plaque-support (22), de la plaque d'appui (9) et d'un nombre de rouleaux (5, 6, 7 et 8) pour le guidage de la bande transporteuse (2) le long d'une courbe ovale médiane renfoncée vers l'intérieur, et dont la bande transporteuse (2) soit bien tendue au niveau de la section renfoncée vers l'intérieur au moyen d'un rouleau-tendeur (8) et dont la section renfoncée vers l'intérieur soit au moins partiellement formée pour la réception du renflement (11.1) d'au moins une cartouche d'encre (11) du module d'impression et
    - que la plaque-support (22) comporte une structure superficielle qui correspond à une caractéristique de flexion souhaitée et qu'aux deux extrémités elle porte sur la partie intérieure un nombre d'entretoises pour la fixation des plaques moulées (211, 212) et sur la partie extérieure des organes tendeurs (225, 227) pour exercer une prétension de la plaque-support (22).
  2. Dispositif de transport selon la revendication 1, caractérisé en ce, que la bande transporteuse (2) soit une courroie plate et qu'elle comporte dans le sens y du système de coordonnées cartésiennes une largeur (W3), qui est plus large que la largeur (b) de la fenêtre d'impression (3).
  3. Dispositif de transport selon la revendication 1, caractérisé en ce, que la courroie plate soit dotée d'une grande rigidité transversale et qu'elle soit guidée par l'intermédiaire de deux rouleaux de guidage extérieurs (5 et 6) qui sont respectivement agencés aux extrémités de la plaque-support (22) et des plaques moulées (211, 212), et dont la courroie plate (2) chemine, d'une part, sous la surface d'appui dirigée vers le bas de la plaque d'appui (9) et, d'autre part, entre une partie du module d'impression et de la surface dirigée vers le haut de la plaque d'appui (9).
  4. Dispositif de transport selon la revendication 1, caractérisé en ce, qu'un module d'impression soit composé d'un chariot d'impression (24), d'une unité de contact et de commande pour les cartouches d'encre et des cartouches d'encre (11, 12) elles-mêmes, lesquelles sont respectivement équipées d'une tête d'impression à jet d'encre, que le chariot d'impression (24) soit agencé avec une mobilité transversale sur des tiges transversales (271, 272) et qu'il puisse être déplacé dans le sens y transversalement au sens de transport d'articles postaux (sens x) dans un espace en forme de caisse, qui est formé par un châssis métallique, dont la paroi latérale droite (25) prend vers l'avant une forme de languette (23), qui est coudée à 90° et qui atteint la plaque moulée (212) et dont la paroi latérale gauche (26) prend vers l'avant une forme de languette (29) qui est coudée à 90° dans le sens x et qui atteint la partie intérieure de la plaque-support (22), de sorte que le module d'impression en position d'impression pénètre partiellement dans l'espace intermédiaire entre les rouleaux de guidage (5, 7, 6, 8) et que les têtes d'impression à jet d'encre des deux cartouches d'encre (11, 12) se trouvent dans la fenêtre d'impression agencée à l'extérieur de la zone de transport.
  5. Dispositif de transport selon les revendications 1 et 4, caractérisé en ce, que soit utilisée au moins une cartouche d'encre (11) dans un appareil d'impression commandé par microprocesseur et disposant d'une fenêtre d'impression, à travers laquelle l'au moins une tête d'impression à jet d'encre (11.2) de l'au moins une cartouche d'encre (11) pulvérise des gouttes d'encre sur la surface à imprimer d'un article postal (10) ou encore d'un produit plat, qui est transporté à l'aide de la courroie plate en position couchée sur la face qui ne doit pas être imprimée.
  6. Dispositif de transport selon les revendications 1, 4 et 5, caractérisé en ce, que le sens x d'un système de coordonnées cartésiennes soit le sens de transport de l'article postal (10) ou du produit plat transporté en position couchée sur la face qui ne doit pas être imprimée, que le sens y soit dirigée vers l'arrière en direction de la face arrière et que le sens z soit dirigé vers la partie haute de l'appareil d'impression piloté par microprocesseur, que la fenêtre d'impression soit agencée transversalement par rapport à la plaque d'appui (9) dans le sens y et que l'au moins une cartouche d'encre (11) comporte un renflement (11.1) dirigé vers l'avant et une tête d'impression à jet d'encre (11.2) dirigée vers le bas.
  7. Dispositif de transport selon les revendications 1 et 4 à 6, caractérisé en ce, que l'appareil d'impression piloté par microprocesseur soit une affranchisseuse.
  8. Dispositif de transport selon la revendication 1, caractérisé en ce, que soit prévu d'une part un premier nombre d'entretoises (203, 204, 206) entre une extrémité de la plaque-support (22) du support de rouleaux (20) et une première plaque moulée (211), qu'un second nombre d'entretoises (205, 207, 208) soit d'autre part prévu entre une autre extrémité de la plaque-support (22) et une seconde plaque moulée (212), que respectivement un organe tendeur (225) et (227) soit monté aux extrémités respectives de la plaque-support (22) du support de rouleaux (20) et soit formé par une tige de traction (221), et que soit transmise une tension de traction mécanique par les organes tendeurs (225) et (227) sur les deux extrémités de la plaque-support (22) pour la flexion définie du support de rouleaux (20) en cas de charge correspondante sur la plaque-support (22), et que soient prévus des organes tendeurs et de réglage (226, 228) de la tige de traction (221), avec lesquels il soit possible de régler la tension de traction.
  9. Dispositif de transport selon les revendications 1 et 8, caractérisé en ce, que les entretoises (203, 204, 206) et (205, 207, 208) soient de conception identique.
  10. Dispositif de transport selon les revendications 1, 8 et 9, caractérisé en ce, que les entretoises (203, 204, 206) et (205, 207, 208) soient toutes conçues identiquement en tant qu'arbres de paliers et que pour le réglage de l'alignement, les entretoises respectives (203, 204, 206) et (205, 207, 208) soient toutes positionnées de telle manière que leurs axes soient parallèles à la même extrémité du support de rouleaux (20).
  11. Dispositif de transport selon les revendications 1 et 8 à 10, caractérisé en ce, que l'entretoise (204) soit conçue en tant qu'arbre de palier pour un basculeur (200) d'un mécanisme de réglage de tension d'une bande transporteuse (2) et que les entretoises (205, 206 et 207) soient conçues en tant qu'arbres de palier pour les rouleaux (5, 6 et 7) de la bande transporteuse (2).
  12. Dispositif de transport selon les revendications 1 et 8 à 11, caractérisé en ce, que le basculeur (200) soit constitué de deux leviers coudés extérieurs (201 et 202), qui sont écartés entre eux par l'intermédiaire d'une plaque médiane (2001) en portant à une extrémité du bras de levier un arbre de palier (2008) avec un rouleaux de renvoi (8), et dont l'autre bras respectif des leviers coudés (201, 202) soit coudé au milieu d'environ 90° et serve d'arrêt en combinaison avec une tige d'arrêt (209), et dont les leviers coudés (201, 202) portent respectivement dans la zone coudée une ouverture (2011, 2021) pour la fonction de palier de l'entretoise (204) conçue en tant qu'arbre de palier.
  13. Dispositif de transport selon la revendication 1, caractérisé en ce, que la plaque-support (22) comporte un premier trou (2201) et un second trou (2202) pour la fixation du dispositif de transport (20B) au dispositif d'entraînement (20A) correspondant, et dont la résistance à la flexion de la plaque-support (22) dans la zone entre les deux trous soit prédéfinie par un renfort et/ou un affaiblissement mécanique(s) de la structure.
  14. Dispositif de transport selon les revendications 1 et 13, caractérisé en ce, que les zones de renfort et/ou d'affaiblissement de la structure soient positionnées côte à côte.
  15. Dispositif de transport selon les revendications 1, 13 et 14, caractérisé par un ordre et un agencement définis de plusieurs renforts et affaiblissements de la structure de la plaque-support (22), de manière à ce qu'une flexion définie de la plaque-support (22) soit atteinte, de sorte qu'en cas de sollicitation par charge le tracé de la flexion de la plaque-support (22) s'effectue selon une fonction mathématique définie.
  16. Dispositif de transport selon les revendications 1 et 13 à 15, caractérisé en ce, qu'il soit rendu possible qu'une flexion de la plaque-support (22) suive un déroulement logarithmique ou potentiel.
  17. Dispositif de transport selon les revendications 1 et 13 à 15, caractérisé en ce, qu'il soit rendu possible qu'une flexion de la plaque-support (22) suive un déroulement absolument rectiligne et uniforme.
  18. Dispositif de transport selon les revendications 1 et 13 à 15, caractérisé en ce, que la plaque-support (22) comporte sur la face avant au moins une plaque de base (2200) lisse vers l'intérieur avec des bordures pliées vers l'avant pour le renfort et la réalisation d'une rigidité torsionnelle suffisante, des organes tendeurs (225, 227) ainsi qu'une tige de traction (221) et des organes tendeurs et de réglage (226, 228) de la tige de traction (221), et qu'on atteigne, grâce à une largeur agrandie d'au moins une bordure (2224), un renfort constructif et, grâce à une largeur réduite de la bordure dans la zone de la cavité (229), un affaiblissement constructif de la structure de la plaque-support (22).
  19. Dispositif de transport selon les revendications 1, 13 à 15 et 18, caractérisé en ce, que la tige de traction (221) soit conçue en tant que vis six-pans.
  20. Dispositif de transport selon les revendications 1, 13 à 15 et 18, caractérisé en ce, que les organes tendeurs et de réglage (226, 228) de la tige de traction (221) soient conçus en tant que vis ou écrou, qui permettent d'ajuster librement l'alignement de la bande transporteuse sur une plage de 0 à ±10 mm.
  21. Dispositif de transport selon les revendications 1 et 13 à 15, caractérisé en ce, que soit conçu un affaiblissement de la structure de la plaque-support (22) par une réduction de l'épaisseur de paroi des parois cellulaires ou encore alvéolaires en accord avec les paramètres des matériaux.
  22. Dispositif de transport selon les revendications 8 à 10, caractérisé en ce, que chacune des deux plaques moulées repose en respectivement trois points sur des entretoises aux deux extrémités de la plaque-support (22), ce qui permet d'atteindre une assise solide et pauvre en torsion des plaques moulées à l'aide des entretoises aux deux extrémités.
  23. Dispositif de transport selon les revendications 8 à 10, caractérisé en ce, qu'une fixation en trois points soit réalisée aux deux extrémités de la plaque-support (22) pour chacune des deux plaques moulées (211, 212).
EP20080019554 2007-12-17 2008-11-07 Dispositif de transport pour des produits plats à imprimer Active EP2072272B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007060788 2007-12-17
DE102008032804.9A DE102008032804B4 (de) 2007-12-17 2008-07-11 Transportvorrichtung für zu bedruckende flache Güter

Publications (3)

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EP2072272A2 EP2072272A2 (fr) 2009-06-24
EP2072272A3 EP2072272A3 (fr) 2014-04-02
EP2072272B1 true EP2072272B1 (fr) 2014-09-17

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010015351U1 (de) 2010-11-11 2011-02-03 Francotyp-Postalia Gmbh Vorrichtung zur Absenkung, Positionierung und Anhebung von Druckelementen eines Druckergeräts
DE202010015354U1 (de) 2010-11-11 2011-02-10 Francotyp-Postalia Gmbh Modular aufgebautes Druckergerät mit einer entnehmbaren kastenförmigen Baueinheit
DE202011108254U1 (de) * 2011-11-24 2011-12-08 Francotyp-Postalia Gmbh Anordnung zum Bedrucken streifenförmiger Druckträger

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144081B (en) 1983-07-23 1987-10-28 Pa Consulting Services Postal franking machines
US5813326A (en) 1994-12-22 1998-09-29 Pitney Bowes Inc. Mailing machine utilizing ink jet printer
US5467709A (en) 1994-12-22 1995-11-21 Pitney Bowes Inc. Mailing machine utilizing ink jet printer
DE19605015C1 (de) 1996-01-31 1997-03-06 Francotyp Postalia Gmbh Vorrichtung zum Bedrucken eines auf einer Kante stehenden Druckträgers
DE19605014C1 (de) 1996-01-31 1997-03-13 Francotyp Postalia Gmbh Vorrichtung zum Bedrucken eines auf einer Kante stehenden Druckträgers
DE19645363C1 (de) 1996-01-31 1998-01-22 Francotyp Postalia Gmbh Vorrichtung zum Bedrucken eines auf einer Kante stehenden Druckträgers
FR2775376B1 (fr) 1998-02-25 2000-09-08 Secap Dispositif d'affranchissement et d'adressage
FR2790997B1 (fr) * 1999-03-16 2001-06-01 Secap Dispositif pour imprimer un signe et machine a affranchir le comportant
DE10032855A1 (de) 2000-07-06 2002-01-17 Francotyp Postalia Gmbh Vorrichtung zum Bedrucken eines Druckträgers
US6585433B2 (en) 2001-03-09 2003-07-01 Pitney Bowes Inc. Print signal generation
US6550994B2 (en) * 2001-07-20 2003-04-22 Pitney Bowes Inc. System for printing information on a mailing medium
JP3825695B2 (ja) 2002-01-11 2006-09-27 マイクロ・テック株式会社 スクリーン印刷機

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EP2072272A3 (fr) 2014-04-02
EP2072272A2 (fr) 2009-06-24

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