EP0181804B1 - Vorrichtung zur automatischen Winkeleinstellung einer Mehrzahl von rotierenden schaltbaren Maschinenteilen und Maschine, insbesondere Frankiermaschine die eine solche Vorrichtung enthält - Google Patents

Vorrichtung zur automatischen Winkeleinstellung einer Mehrzahl von rotierenden schaltbaren Maschinenteilen und Maschine, insbesondere Frankiermaschine die eine solche Vorrichtung enthält Download PDF

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Publication number
EP0181804B1
EP0181804B1 EP85402059A EP85402059A EP0181804B1 EP 0181804 B1 EP0181804 B1 EP 0181804B1 EP 85402059 A EP85402059 A EP 85402059A EP 85402059 A EP85402059 A EP 85402059A EP 0181804 B1 EP0181804 B1 EP 0181804B1
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EP
European Patent Office
Prior art keywords
indexing
gear
wheel
rotary elements
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85402059A
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English (en)
French (fr)
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EP0181804A1 (de
Inventor
Germain Le Meur
Claude Martin
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D'etude Et De Construction D'appareils De Precision (secap) Ste
Original Assignee
D'etude Et De Construction D'appareils De Precision (secap) Ste
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Publication of EP0181804A1 publication Critical patent/EP0181804A1/de
Application granted granted Critical
Publication of EP0181804B1 publication Critical patent/EP0181804B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • G07B2017/00516—Details of printing apparatus
    • G07B2017/00524—Printheads
    • G07B2017/00548—Mechanical printhead
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19358—Laterally slidable gears
    • Y10T74/19367—Swinging carriage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19698—Spiral
    • Y10T74/19702—Screw and nut
    • Y10T74/19744—Rolling element engaging thread
    • Y10T74/19781—Non-recirculating rolling elements

Definitions

  • the invention relates to automatic angular positioning devices for indexable rotary members of machines, in particular office machines, packaging machines and, more generally, machines where the angular position of one or more members needs to be settled.
  • the invention applies, in particular, to the automatic positioning of the printing rollers, in a postal franking machine, the printing drum of the machine itself constituting a rotary support for the printing rollers, the indexing allows the "enhancement" of the machine for each franking operation.
  • Such a small machine comprises: a frame, a main rotary shaft mounted for rotation in the frame, a printing drum carried by said shaft and in which printing wheels are rotatably mounted on a transverse shaft and carry toothed pinions in engagement, each with a first corresponding rack secured to a rod mounted for longitudinal sliding in said main shaft, while a second longitudinal rack secured to each of said rods is engaged with one of several individual coaxial toothed wheels of enhancement command.
  • each of the rods is controlled by a stepping motor.
  • Each of these stepper motors to be easily accommodated in the machine, must be small and can therefore only provide a low torque. It follows the risk of breakdowns by loss of step when the rods and the wheels are impeded in their movement by the printing ink, which requires frequent cleaning. Furthermore, the axial arrangement of the rods imposes complicated transmissions between them and the printing wheels.
  • the print wheels are positioned by independent gears successively engaged with a toothed wheel.
  • the toothed wheel is rotatably mounted in a carriage movable parallel to the common axis of the pigs and it is controlled by a single stepping motor.
  • the movement of the carriage is ensured by two electromagnets, excited together or separately, to rotate the levers connected to the carriage by an axis transforming the rotation into translation.
  • the number of carriage positions is limited to four, representing the combinations of two two-state electromagnets.
  • the rods are successively controlled by a first stepping motor whose axis slidingly carries a carriage driven transversely by a second stepper motor.
  • the second stepper motor despite its simplicity, is bulky and expensive.
  • the object of the invention is to provide an automatic device for positioning indexable rotary members of a machine, in particular printing knobs for a postage franking machine, which does not have the aforementioned drawbacks of the embodiments mentioned more high.
  • the subject of the invention is also machines, in particular postal franking machines, which include an automatic angular positioning device for indexable rotary members having the characteristics set out in the present application.
  • the postal franking machine shown from the front, as a whole, in FIG. 1, comprises a frame 1 in which is rotatably mounted a main shaft 2 which supports a printing drum 3; the franking folds 4, placed on a table 5 integral with the frame 1, are pushed, one by one, between two drive rollers 6, 7 which lead them between the rotary printing drum 3 and a support roller 8 ; they emerge franked from the machine at the location of arrow 9.
  • the printing drum is driven, each time for one revolution, by a motor to which we will return later.
  • a body 11 includes the device for enhancing the print wheels which is generally designated by 12 and will be described in detail below.
  • the body still contains, in particular, the control and reading members, such as: a keyboard 14, an indicator of the postage value 15, a totalizer of the postage values 16, and a postage meter 17.
  • movements of the various elements of the automatic enhancement device are provided by a stepping electric motor 18 and by an electromagnet (not shown in this figure) in response to the information given on the keyboard, under the control of a set microprocessor electronics and peripherals (not shown) which will not be described in detail, because it is not part of the invention.
  • the main shaft 2 which rotates in two bearings 19, 20 and carries the drum 3 in which are mounted the print wheels 21a, 21b, 21c, 21d , four in number, for example, corresponding to the digit, units, tens, hundreds and thousands of postage values to be made; these knurls are mounted for rotation on an axis 22 orthogonal to the direction of the main shaft 2 and they are integral, respectively, with toothed pinions 23a, 23b, 23c, 23d whose teeth are engaged, respectively, with first racks 24a, 24b, 24c, 24d, integral with longitudinal rods, 25a, 25b, 25c, 25d adapted to slide in corresponding longitudinal grooves cut in the main shaft 2.
  • Each rod such as 25b is provided with a second rack 27b engaged in itself with an indexable rotary member constituted by an individual toothed wheel for enhancement control, 28b (see also Figure 8).
  • an indexable rotary member constituted by an individual toothed wheel for enhancement control, 28b (see also Figure 8).
  • the machine comprises four printing rollers, there are therefore four individual toothed wheels for enhancement control 28a, 28b, 28c, 28d, respectively, but to simplify the representation, in FIG. scale, only three have been shown 28a, 28b, 28c.
  • toothed wheels are mounted idly on an axis 30 fixed transversely in the main shaft 2 in a direction parallel to that of the axis 22 which carries the printing knobs and they are - kept locked in each of their positions, which correspond to numbers in the printing position of the rollers, by locking fingers, such as the finger 31 b (FIG. 6) for the wheel 28b, all these fingers being pivotally mounted on a common transverse axis 32 carried by the shaft main 2 and being resiliently biased against the teeth of the wheels by springs such as 33b.
  • washers 35 are interposed, the outside diameter of which is equal to the bevel diameter of said cogwheels, that is to say the diameter of the circumference which passes through the vertices of their teeth; we will come back to the role of these washers later.
  • a common cogwheel for indexing or enhancement control 37 can be selectively engaged 37 made integral, for example by means of a pin 38 (see in particular FIGS. 6 to 8), of a cylindrical rod for indexing or setting control 39 located in the same transverse geometric plane P1 as the axis of the individual toothed wheels 28a to 28d and parallel to said axis.
  • the rod 39 is mounted, at one of its ends, in a primary rotary indexing or enhancement control shaft 41 (FIGS. 8 and 9) constituted by a cylindrical bushing forming a ball cage 42 and in which it can rotate and slide longitudinally; the amplitude of the sliding movement of the rod 39 is limited by an adjustable stop 40.
  • the primary shaft 41 is mounted in a bearing 44 whose bore has an annular groove 45; the balls are partially engaged in this annular groove as well as in helical grooves 46 formed in the cylindrical surface of the rod 39.
  • the bearing 44 is mounted in a support 47 which can approach or move away from the set of toothed wheels individual enhancement control commands 28a to 28d by a pivoting movement of an axis 48, the two ends of which are respectively mounted in two legs 51, 52 secured to a structure 53 fixed in a removable manner in the frame 1.
  • the other end of the rod 39 can rotate and slide freely in the support 47.
  • the support 47 can pivot under the action of an electromagnet 55 ( Figure 5) carried by the structure 53 and whose movable armature 56 is adapted to push an arm 57 integral with the support 47, against the force of a return spring 58.
  • the amplitude of the oscillating movements of the arm 57 is limited, precisely, by two stop screws to lock nut 61, 62.
  • the common gear wheel for enhancement control 37 is released from the groove 65.
  • the common gear wheel 37 is engaged between the two washers 35 which are located on either side of the individual wheel against which the common wheel is engaged, so that said common wheel 37 and the rod 39 are blocked in translation. It follows that a rotation of the rod 39 is capable of rotating this wheel and, consequently, of indexing the individual toothed wheel and the corresponding printing wheel.
  • means are provided for selectively releasing the finger such as blocking 31 b of the individual wheel considered, as well as safety means for additional blocking, respectively axial and or angular, of the rod 39 and or of the individual toothed wheels.
  • the two cheeks 71, 72 of a yoke 73 are crossed by the enhancement control rod 39 and enclose the common toothed wheel 37; the yoke 73 has a rib 74 permanently engaged in a guide groove which, in this example, consists of the groove 65 in which a tooth of the common toothed wheel can already engage.
  • a protuberance 79 of the yoke 73 in the high position pushes a bent extension, such as 81 b, of the corresponding finger 31 b for example, for immobilizing the selected individual wheel 28b, so as to allow it to d 'be indexed.
  • the electric stepping motor 18 (FIGS. 1, 2, 4) is fixed to a console 83 secured to the frame of the machine and its shaft 84 is connected to the primary shaft 41 by a universal joint, from Oldham or Cardan joint. example, indicated in 85.
  • the drive motor for one revolution of the main shaft 2 which carries the printing drum is indicated at 87.
  • the print wheels 21 a, 21 b, 21 c, 21 d remained at their respective values Va-0, Vb-0, Vc-0 and Vd-0.
  • Va-1, Vb-1, Vc-1 and Vd-1 we will assume that it is now necessary to frank a fold to a different value for which some, at least, of the print wheels must be indexed to a new value.
  • the machine is at rest and the various members of the automatic enhancement control device occupy the positions shown in FIGS. 2 and 3, that is to say that the common gear wheel for enhancement control 37 is out of range of the individual toothed wheels 28a, 28b, 28c, 28d by the fact that the rod 39 occupies its advanced position as far as possible against the stop 40.
  • the electromagnet 55 is not excited, so that the support 47 occupies its low position and that, consequently, a tooth of the common wheel 37 is engaged in the groove 65; it follows that the rod 39, integral with this toothed wheel, is blocked in rotation.
  • the stepping motor 18 is set in motion in the direction and the number of suitable steps to bring the rod 39, then locked in rotation by the common toothed wheel 37, to its advanced position against the stop 40 ( Figures 2 and 3); the common toothed wheel 37 is therefore again away from the group of individual toothed wheels 28a to 28d.
  • the main shaft is rotated for one turn under the action of the motor 87 as soon as the franking fold is introduced into the machine.
  • the counter 17 (FIG. 1) advances by one unit and the total of the values of the envelopes already franked appears in the viewfinder 16.
  • the common toothed wheel 37 for enhancing control is advantageously given a number of teeth equal to 10 and, at the same time time, the axial spacing between the individual toothed wheels 28a to 28d is chosen equal to one tenth of the pitch of the helical grooves 46 of the rod 39, so that the number of steps which the rotor of the motor 18 must rotate is the same for an axial selection operation of an individual toothed wheel only for indexing a tooth of these wheels.
  • the invention can generally be applied to the selection and indexing of moving parts having teeth with which the power take-offs are aligned.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Transmission Devices (AREA)

Claims (9)

1. Vorrichtung zur automatischen Winkeleinstellung einer Mehrzahl von rotierenden schaltbaren Maschinenteilen, mit:
- einem gemeinsamen Schaltsteuer-Zahnrad (37), das mit einem Schaltsteuer-Zylinderschaft (39) fest verbunden ist, der parallel zur Achse der rotierenden schaltbaren Teile (28a, 28b, 28c, 28d) verläuft,
- einer primären Schaltsteuer-Rotationsspindel (41), die aus einer Zylinderbuchse besteht, die einen Käfig für Kugeln (42) bildet, in dessen Bohrung der Schaft zu gleiten und sich zu drehen vermag,
- einem Lager (44) für die primäre Rotationsspindel (41), das von einem ausschließlich in der Richtung der Anordnung der rotierenden schaltbaren Teile (28a, 28b, 28c, 28d) verstellbaren Lagerbock (47) aufgenommen ist, und dessen Bohrung eine Ringnut (45) bildet, wobei die Kugeln (42) teilweise in diese Ringnut sowie in schraubenförmige Nuten (46) eingesetzt sind, welche auf der Zylinderoberfläche des Schafts ausgebildet sind,
- einem elektrischen Schrittmotor (18), dessen Welle (84) drehantreibend mit der primären Schaltsteuer-Rotationsspindel (41) verbunden ist,
- Blockierzapfen (31a, 31 b, 31 c, 31d) die jeweils biegsam gegen die Zähne der rotierenden schaltbaren Teile (28a, 28b, 28c, 28d), diese belastend angelegt sind,
- einer Einrichtung (65) zum zeitweisen Drehblockieren des Schaltungssteuer-Schafts (39),
- einer Einrichtung (35) zum zeitweisen Verschiebeblockieren des Schaltsteuer-Schafts (39),
- einer Einrichtung (73) zum zeitweisen Zurückschieben des Blockierbolzens (31 a, 31 b, 31c, 31d) des ausgewählten, in Eingriff mit dem gemeinsamen Schaltsteuer-Zahnrad (37) befindlichen rotierenden schaltbaren Teils (28a, 28b, 28c, 28d), und zum gleichzeitigen winkelmäßigen Verriegeln der weiteren rotierenden schaltbaren Teile, und
- einer Einrichtung (55, 56, 57, 58) zum Steuern der Verstellungen des Lagerbocks (47), die einen einzigen Elektromagneten umfaßt,

wobei diese Einrichtung dazu ausgelegt ist, den Lagerbock (47) in eine erste Stellung zu verstellen, in welcher die Drehung des Schrittmotors (18) zum Auswählen des zu schaltenden rotierenden Teils (28a, 28b, 28c, 28d) eine Axialverstellung des Schafts (39) und des drehblockierten gemeinsamen Zahnrads (37) auslöst, oder in eine zweite Stellung, in welcher die Drehung des Schrittmotors (18) zum Schalten des ausgewählten rotierenden Teils eine Drehung des Schafts (39) und des verschiebeblockierten gemeinsamen Zahnrads (37) auslöst.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die rotierenden schaltbaren Teile (28a, 28b, 28c, 28d) aus einzelnen, koaxialen Steuer-Zahnrädern zum Werteinstellen von Druckrädern (21 a, 21 b, 21 c, 21 d) einer Postfrankiermaschine bestehen, die umfaßt: ein Gestell (1), eine Hauptdrehspindel (2), die in dem Gestell drehgelagert ist, eine Drucktrommel (3), die von der Spindel getragen ist, und in der die Druckräder (21 a, 21 b, 21 c, 21 d) auf einer Querachse (22) drehgelagert sind und Zahnkammräder (23a, 23b, 23c, 23d) tragen, von denen jedes im Eingriff mit einer entsprechenden ersten Zahnstange (24a, 24b, 24c, 24d) steht, die längsverschieblich in der Hauptspindel gelagert ist, wohingegen eine zweite längsgerichtete Zahnstange (27a, 27b, 27c, 27d) fest mit jeder der ersten Zahnstangen verbunden ist und im Eingriff mit einem der einzelnen koaxialen Werteinstell-Steuerzahnrädern (28a, 28b, 28c, 28d) steht.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zum zeitweisen ausschließlichen Drehblockieren des Schaltsteuer-Schafts (39) aus einer feststehenden Führung (66) besteht, die parallel zu dem Schaltsteuer-Schaft eine Nut (65) aufweist, und in der ein Zahn des gemeinsamen Schaltsteuer-Zahnrads (37) eingreift, wenn jener nicht gegen eines der rotierenden schaltbaren Teile (28a, 28b, 28c, 28d) im Eingriff anliegt.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zum zeitweisen ausschließlichen Verschiebeblockieren des Schaltsteuer-Schafts (39) aus Scheiben (35) besteht, welche zwischen die rotierenden schaltbaren Teile (28a, 28b, 28c, 28d) eingesetzt sind und deren Außendurchmesser dem Frankierdurchmesser der rotierenden Teile entspricht.
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zum zeitweisen Zurückschieben des Blockierbolzens (31 a, 31 b, 31 c, 31 d) der rotierenden schaltbaren Teile (28a, 28b, 28c, 28d), die wahlweise im Eingriff stehen mit dem gemeinsamen Schaltsteuer-Zahnrad (37) sowie zum gleichzeitigen winkelmäßigen Verriegeln der weiteren rotierenden schaltbaren Teile jeweils aus einem Vorsprung (79) besteht, der dazu ausgelegt ist, jeweilige Verlängerungen (81 a, 81 b, 81 c, 81 d) der Blockierbolzen zurückzuschieben, sowie aus Zahnabschnitten (77, 78), die dazu ausgelegt sind, in diejenigen Zähne der rotierenden schaltbaren Teile einzugreifen, mit denen das gemeinsame Schaltsteuer-Zahnrad (37) nicht im Eingriff steht, wobei der Vorsprung und die Zahnabschnitte zu einer Abdeckkappe (73) gehören, deren Seitenteile (71, 72) von dem Schaltsteuer-Schaft (39) durchquert sind und das gemeinsame Schaltsteuer-Zahnrad (37) umschließen, wobei die Abdeckkappe eine Rippe (74) aufweist, die ungehindert ständig in eine Nut (65) einer feststehenden Führung (66) eingreift, die sich parallel zu dem Schaltsteuer-Schaft erstreckt.
6. Vorrichtung nach Anspruch 4 und 5, dadurch gekennzeichnet, daß die Einrichtung zum zeitweisen ausschließlichen Verschiebeblockieren des Schaltsteuer-Schafts (39) zusätzlich die Seitenflächen der Zahnabschnitte (77, 78) umfaßt, die mit entsprechenden Seitenflächen der Scheiben (35) zusammenwirken, welche zwischen den rotierenden schaltbaren Teilen (28a, 28b, 28c, 28d) eingesetzt sind.
7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Verbindung zwischen der primären Schaltsteuer-Spindel (41) und der Welle (84) des Schrittmotors (18) der rotierenden schaltbaren Teile aus einem Kreuzgelenk, wie etwa einem Oldham-Gelenk oder einem Cardangelenk besteht.
8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Anzahl der Zähne des gemeinsamen Schaltsteuer-Zahnrads (37) zehn beträgt, und daß die Ganghöhe der schraubenförmigen Nuten (46) der Verbindung zwischen der primären Schaltungssteuer-Rotationsspindel (41) und der Welle (84) des Schrittmotor (18) das Zehnfache des Abstands zwischen den geometrischen Mittenebenen der beiden benachbarten rotierenden schaltbaren Teile (28a, 28b, 28c, 28d) beträgt.
9. Vorrichtung nach Anspruch 1, gekennzeichnet durch die Verwendung in Postfrankiermaschinen.
EP85402059A 1984-11-05 1985-10-23 Vorrichtung zur automatischen Winkeleinstellung einer Mehrzahl von rotierenden schaltbaren Maschinenteilen und Maschine, insbesondere Frankiermaschine die eine solche Vorrichtung enthält Expired EP0181804B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416785 1984-11-05
FR8416785A FR2572827B1 (fr) 1984-11-05 1984-11-05 Dispositif de positionnement angulaire automatique d'une pluralite d'organes rotatifs indexables de machine, et machine, notamment machine d'affranchissement postal comportant un tel dispositif

Publications (2)

Publication Number Publication Date
EP0181804A1 EP0181804A1 (de) 1986-05-21
EP0181804B1 true EP0181804B1 (de) 1989-01-25

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US (1) US4723486A (de)
EP (1) EP0181804B1 (de)
DE (1) DE3567977D1 (de)
FR (1) FR2572827B1 (de)

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US4598639A (en) * 1984-10-04 1986-07-08 Pitney Bowes, Inc. Postal meter value selector system

Also Published As

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FR2572827B1 (fr) 1986-12-26
US4723486A (en) 1988-02-09
EP0181804A1 (de) 1986-05-21
FR2572827A1 (fr) 1986-05-09
DE3567977D1 (en) 1989-03-02

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