EP0057810B1 - Appareil d'alimentation en pièces individuelles de matériau plat - Google Patents

Appareil d'alimentation en pièces individuelles de matériau plat Download PDF

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Publication number
EP0057810B1
EP0057810B1 EP82100057A EP82100057A EP0057810B1 EP 0057810 B1 EP0057810 B1 EP 0057810B1 EP 82100057 A EP82100057 A EP 82100057A EP 82100057 A EP82100057 A EP 82100057A EP 0057810 B1 EP0057810 B1 EP 0057810B1
Authority
EP
European Patent Office
Prior art keywords
conveying
feed mechanism
conveyor
sensor
article
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
EP82100057A
Other languages
German (de)
English (en)
Other versions
EP0057810A1 (fr
Inventor
Werner Haug
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.)
Frama AG
Original Assignee
Frama AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Frama AG filed Critical Frama AG
Priority to AT82100057T priority Critical patent/ATE12755T1/de
Publication of EP0057810A1 publication Critical patent/EP0057810A1/fr
Application granted granted Critical
Publication of EP0057810B1 publication Critical patent/EP0057810B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/063—Rollers or like rotary separators separating from the bottom of pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C1/00—Measures preceding sorting according to destination
    • B07C1/02—Forming articles into a stream; Arranging articles in a stream, e.g. spacing, orientating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
    • B43M5/00—Devices for closing envelopes
    • B43M5/04—Devices for closing envelopes automatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/18—Modifying or stopping actuation of separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/20—Acceleration or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/512—Starting; Stopping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1916—Envelopes and articles of mail

Definitions

  • the invention relates to a feed device for individual flat pieces of material from a stacking space to a subsequently arranged device for the individual treatment of the pieces of material, in particular for feeding envelopes to a franking machine, a conveyor track beginning in the stacking space and a retaining device for passing through each of them on the outlet side of the stacking space only a single piece of material is present, the conveyor track has at least two conveyor sections and there is an electrical connection between the subsequently arranged device and the feed device.
  • a feed device of this type is known in which the conveyance is interrupted intermittently by means of a cam control in order to adapt to the intermittent operation of the franking machine.
  • This mechanical control of the feed device makes it impossible to easily adapt to different lengths of work cycles of the franking machine, which result from envelopes of different lengths when franking.
  • the lack of adaptation means that franking is not always possible in the same place of different envelopes and double franking can occur even with particularly long envelopes, since the intermittent deactivation of the funding must be adapted to the smallest possible envelope.
  • the first conveyor section of this known feed device is located below the stacking space and extends into the effective range of the retention device.
  • this first conveyor section conveys the bottom envelope of a stack beyond the retention device, this can be pulled by frictional contact with an envelope lying above it, so that two or more envelopes in an overlapping arrangement simultaneously pass through the feed device, get into the subsequent franking machine and are incorrectly franked The result is.
  • the invention has for its object to improve a feed device of the type mentioned so that a uniform, controlled supply of pieces of material to a subsequently arranged device and thus its proper function is guaranteed.
  • a feed device of the type mentioned at the outset is proposed, which is characterized by two conveyor lines with drives which are independent of one another, the first conveyor line being limited to the stacking space, the second conveyor line beginning at the retaining device and a first sensor being arranged in the conveyor path , which generates a signal for switching off the drive of the first conveyor line when passing the front edge of a piece of material.
  • the feed device can advantageously be designed such that the first sensor, when passing the rear edge of the material piece, receives a signal for reducing the conveying speed generated the second conveyor line, and that a second sensor is provided, which is arranged in the conveyor path at a distance behind the first sensor and when passing the rear edge of the piece of material, a signal to switch off the conveyance of the second conveyor line and to switch on individual treatment of the subsequently arranged device generated.
  • this device After this device has carried out a single treatment, it returns a signal to the feed device by means of a known electrical connection to the feed device, by means of which the feed device starts the conveyance again. In this way it is achieved that the conveying speed of the feed device is exactly matched to the working speed of the subsequently arranged device and that it can work continuously intermittently.
  • a pressure roller driven by the drive of this conveyor line is provided at the end of the second conveyor line, which extends into the region of the subsequently arranged intermittently operating device, so that it is still in contact with the piece of material when this is already conveyed by the conveyor of this subsequently arranged device and the drive of the second conveyor section is switched off.
  • the pressure roller initially contributing to the conveyance then serves as a brake, so that further movement of the piece of material after the conveyance is switched off is prevented by inertial forces.
  • the drawing shows a schematic representation of a partially sectioned side view of a feed device 2 for envelopes, which is coupled to a franking machine 4.
  • connection between the feed device 2 and the franking machine 4 is made mechanically by means of a plug pin 6 running transversely to the conveying direction and electrically by means of an electrical plug connection 8. Since both plug parts of the plug connection 8 are firmly connected to the franking machine or the feed device, the electrical contact results Simultaneously with the establishment of the mechanical connection, in that the plug pin 6 ensures precise alignment and guidance until a latching takes place by means of a pawl 12 engaging in the plug pin 6.
  • the latching mechanism and the electrical connector part associated with the feed device are located in a common flat housing 14 at a distance below the table top 16 of the feed device 2. This distance gives a gap which serves to accommodate the laterally projecting table top 18 of the franking machine 4.
  • a part 19 of the lower wall of the flat housing 14 is pivotable about an axis 20 against the force of a tension spring 22.
  • the pawl 12 is fixedly connected to the wall part 19, so that the tension spring 22 holds the pawl 12 in engagement with a notch of the plug pin 6 which projects laterally from the housing wall 24 of the franking machine.
  • the coupling and detaching of the feed device 2 is very simple and fast possible by this advantageous latching device, since when the housing part 14 of the feeding device 2 protruding in the conveying direction is gripped, the fingertips of the left hand pivot the wall part 19 so that the latch is released and the decoupling can be done by lateral displacement of the feeder relative to the franking machine. Consequently, it is possible to use the franking machine both with and without a feed device.
  • a working cycle is triggered by a mechanical contact 26 which is located at the beginning of the table top 18 of the franking machine.
  • An envelope is placed on the table top 18 transversely to the conveying direction of the franking machine in such a way that it abuts the edge 28 of the table top at which the mechanical contact 26 is located.
  • the position of the mechanical contact 26 thus determines the starting position of an envelope when a franking machine work cycle has expired.
  • the feed movement takes place in the same direction instead of transversely to the conveying path of the franking machine, and the mechanical contact 26 cannot serve to trigger a working cycle of the franking machine 4.
  • the feed device therefore has a sensor 30, for. B. a photocell, which is approximately - based on the conveyor line - arranged in the same place as the mechanical contact 26 of the franking machine.
  • the conveyance of the feed device In order to prevent another envelope from being conveyed immediately before a work cycle of the postage meter machine has ended, the conveyance of the feed device must be interrupted if a work cycle of the postage meter machine 4 has been triggered by the sensor 30. Furthermore is. it is necessary for the reliable functioning of the franking machine that the supplied envelope comes to a standstill or at least is delayed at the beginning of the franking machine, since the subsequent conveying is to be carried out solely by the conveying device of the franking machine, unaffected by a kinetic energy which the envelope received in the feeding device .
  • a further sensor 32 is arranged in front of the sensor 30 on the conveying path of the feed device, which is referred to below as the first sensor, since it is first reached by the envelopes.
  • This first sensor emits a signal for slowing down the conveying speed, so that a standstill at an exactly predetermined point is possible after passing through the second sensor 30.
  • the first sensor 32 can advantageously also serve to switch off the drive M i of a first conveyor section 34 of the feed device 2 when the front edge of an envelope reaches it. This will surely prevent the bottom envelope of a stack of empty or filled envelopes, which is already in conveying contact with the lock roller 38, from being drawn into the stacking space 36 by frictional contact with the envelope lying above it. This frictional contact is greater, the higher the stack in the stacking space 36, whereby unevenness on the envelope could also cause it to be carried away.
  • the conveying members 39-41 of the first conveying section 34 can be switched off independently in various ways.
  • the feed device has two independently operating drive motors M i for the first conveying path and M 2 for the conveying path adjoining in the conveying direction.
  • the first conveyor section 34 is therefore switched off electrically by switching off the motor M i on the basis of a pulse from the sensor 32.
  • the drive connection between the motor M i and the drive rollers 39-41 is indicated schematically in the drawing by a chain line 42 and can be, for example, by a slip-free gear transmission.
  • the shafts of the motors M 1 , M 2 and the various drive rollers extend through the side housing wall 44 which is visible in the drawing and are mounted in it, so that the gears for the drive transmission are, for example, on the other side of the housing wall than the drive rollers.
  • the second bearing point of the rollers is located in a second wall, not visible in the drawing, which is fastened parallel to the housing wall 44 below the conveyor table plate 16.
  • the second conveyor line with the drive motor M z has four driven conveyor rollers 38, 45, 46 and 47, of which two rollers 46, 47 are arranged as pressure rollers above the conveyor table plate 16.
  • the drive connection from the motor M 2 to the rollers is also schematically indicated by a chain line 48.
  • the drive connection from motor Mz to the rollers arranged below the table top 16 takes place without gears via gearwheels, while the further drive connection to the rollers 46, 47 arranged above the table top 16 takes place starting from the roller 45 by means of endless drive belts, of which the drive belt 50 is between the rollers 46, 47 is visible in the drawing.
  • the drive belts allow slippage when overloaded, so they are preferable for safety reasons.
  • the stacking space 36 has a storage wall 52 in the conveying direction transverse to it, the lower edge 54 of which is located at a distance from the slightly inclined conveyor table plate 16, so that only the lower envelopes of a higher stack can move in the conveying direction to the retaining apron 56.
  • the restraint apron is made of a flexible material, e.g. B. made of rubber, and lies with a part on the top of the lock roller 38, which can be additionally pressed elastically to the roller 38 by means of a pressure plate 60 loaded by a spring 58.
  • the pressure plate 60 lies loosely on the bent apron part. In order to prevent the pressure plate 60 from sliding off this apron part, it has a bead 62 at its free end.
  • the width of the retaining apron 56 is, for example, 50 mm, and it is located, for example, at a distance of 8 mm from the housing wall 44 on the right in the conveying direction on which the envelopes are guided on the side.
  • a sliding apron 64 bears against the retaining apron 56.
  • This sliding apron 64 is at its upper end together with the retaining apron on a retaining web 66, e.g. B. by means of three screws arranged side by side, which are indicated by the chain line 68.
  • the holding web 66 forms part of a holding frame 70 which, for. B. is fixed by two screws 72 to the side housing wall 44.
  • the sliding apron 64 consists of a flexible film with a smooth surface, e.g. B. made of silicone paper, and has the task of leading the leading edge of the lower envelopes of a stack to the gap between the lock roller 38 and the adjacent retaining apron 56. Without this sliding apron 64, the front edge of the envelopes on the rubber material of the retaining apron 56 could be given a too high friction effect in order to ensure the further movement of the envelopes.
  • the axes 74, 76 of the two conveyor and pressure rollers 46, 47 arranged above the conveyor table plate 16 are each located at the end of a lever 78, 80 which can be pivoted about an axis 82, 84 fastened to the housing side wall 44.
  • a tension spring 86, 88 engages, which is attached with its upper end to the holding frame 70.
  • the second conveying and pressure roller 47 is located above the table top 18 of the franking machine 4, which is covered by the conveying table top 16 of the feeding device when the feeding device is coupled.
  • This arrangement of the second conveyor and pressure roller has the advantage that the conveyor path of the feed device with conveyor contact is extended to beyond the franking machine. In addition, this arrangement slows down the envelope after Ab switching of the drive M 2 of the second conveyor line in the starting position for a working cycle of the franking machine 4.
  • the conveying roller 92 of the franking machine rises and thus takes over the necessary further transport of the envelope, and since the last roller 47 of the feeding device in the conveying direction still holding the envelope, the conveyor roller 92 of the franking machine exerts a corresponding tensile force on the envelope so that the envelope is under tension or is stretched.
  • a stretching of the envelope which counteracts a compression or accumulation of the envelope, also results from the fact that the second conveying and pressing roller 47 in the conveying direction has a somewhat larger diameter than the first conveying and pressing roller 46, at the same rotational speed due to the drive coupling by means of the endless belt 50.
  • the mode of operation of the feed device in cooperation with the franking machine is explained in more detail below.
  • the envelopes to be fed to the franking machine are placed in the stacking space 36, and envelopes of various thicknesses and lengths can also be inserted in an irregular sequence.
  • the right-hand side edge of the envelopes in the conveying direction is guided through the housing wall 54, while a slide, not shown, is provided for the lateral guidance on the opposite longitudinal side and can be adjusted transversely to the conveying direction to the width of the envelopes.
  • a part of the envelopes lying above is also moved until it is held back with the front edges of the envelopes on the retaining apron 56 or the sliding apron 64.
  • the lock roller 38 arrives with its profiled adhesive surface, e.g. B. made of rubber, in frictional contact with the front edge and underside of the envelope 94 and pulls it into the gap between the lock roller 38 and the retaining apron 56.
  • the envelope 94 is reliably detected and attracted to the pair of conveyor rollers 45, 46. Before this conveyor roller pair 45, 46 is reached, the front edge of the envelope passes a photocell 32, which generates a signal for switching off the drive M i of the first conveyor section 34 and thus restraining the next and later to be conveyed envelope.
  • the upper conveyor roller 46 rises in accordance with the thickness of the envelope and causes a pressure against the lower conveyor roller 45.
  • the conveyance by the conveyor rollers 45, 46 is preferably carried out somewhat faster than through the lock roller 38, so that the envelopes are stretched or a jam is reliably prevented.
  • the second conveyor and pressure roller 47 detects the envelope, also preferably at a somewhat higher conveying speed, and conveys the envelope in the direction of the franking table 18.
  • the latter sends a signal to slow down the conveying speed in the second conveying path by acting on the associated drive M 2 .
  • This slowdown is necessary in order to achieve an immediate standstill in the following, taking into account the inertial forces of the drive system and the envelope being conveyed, when the rear edge of the envelope passes the second sensor 30.
  • this second sensor With its signal, this second sensor causes the motor M 2 to be braked quickly to a standstill by short-circuiting or a countercurrent.
  • a signal is sent to the franking machine 4 for triggering a franking cycle and finally a third signal for restarting the drive M i at a slower conveying speed.
  • the franking machine After the envelope has passed through a certain distance in the franking machine, the franking machine sends a signal via the line 96 indicated by dashed lines to the feed device or its drives M 1 and M 2 for switching on the drives of both conveyor lines to full power, so that the described conveying process repeated for the next envelope.
  • This signal can be generated by a cam-operated switch by the switching cam z. B. is firmly connected to the shaft of the franking head 98 and passes a fixed switch, not shown, when the franking head rotates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Sorting Of Articles (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Advancing Webs (AREA)

Claims (7)

1. Appareil d'alimentation en pièces individuelles de matériau plat, depuis un emplacement d'empilage (36) jusqu'à une installation (4) qui lui fait suite pour le traitement individuel des pièces, permettant en particulier le transport d'enveloppes de lettres jusqu'à une machine à affranchir et comprenant un trajet de transport (34) dont le début se trouve dans la zone d'empilage (36) à la sortie de laquelle se trouve un dispositif de retenue (56, 38) ne laissant sortir qu'une pièce à la fois, le trajet de transport comportant au moins deux secteurs de transport (34, 38,45,47) et l'installation (4) située à la suite ainsi que l'appareil d'alimentation (2) étant reliés par un circuit électrique (96), caractérisé en ce que les deux secteurs de transport (34, 38, 45-47) ont des dispositifs d'entraînement (M1, M2) indépendants l'un de l'autre, le premier secteur de transport (34) étant limité à la zone d'empilage, le deuxième secteur de transport (38, 45, 47) commençant au dispositif de retenue et le dispositif comportant, sur le trajet de transport, un premier appareil détecteur (32) qui, lors du passage du bord antérieur d'une pièce, émet un signal provoquant l'interruption du dispositif d'entraînement (Mi) du premier secteur de transport (34).
2. Appareil d'alimentation selon la revendication 1, caractérisé en ce que ce premier appareil détecteur (32), lors du passage du bord postérieur de la pièce, émet un signal provoquant le ralentissement du transport dans le deuxième secteur de transport (38, 45, 47) et qu'un deuxième appareil détecteur (30), situé sur le trajet de transport à une certaine distance en arrière du premier appareil détecteur (32), émet, lors du passage du bord postérieur de la pièce, un signal provoquant l'arrêt du transport dans le deuxième secteur de transport et la mise en route d'un traitement individuel dans l'installation située à la suite.
3. Appareil d'alimentation selon la revendication 2, caractérisé par une liaison par signaux (96) entre l'installation (4) située à la suite pour le traitement individuel et l'appareil d'alimentation (2) pour le réenclenchement des dispositifs d'entraînement (Mi et Mz) des deux secteurs de transport de l'appareil d'alimentation.
4. Appareil d'alimentation selon la revendication 2, caractérisé en ce que le deuxième secteur de transport comporte plusieurs organes de transport (38, 45, 47), situés les uns derrière les autres dans le sens du transport, qui prennent contact simultanément avec la pièce et dont la vitesse de transport augmente dans le sens du transport.
5. Appareil d'alimentation selon la revendication 2, caractérisé en ce qu'à l'extrémité du deuxième secteur de transport un cylindre d'appui (47), entraîné par le dispositif d'entraînement (Mz) de ce secteur de transport, pénètre dans la zone de l'installation (4) située à la suite et fonctionnant par intermittences, de sorte qu'il est encore en contact avec la pièce alors qu'elle est déjà transportée par le dispositif de transport de cette installation (4) située à la suite et que le dispositif d'entraînement de l'appareil d'alimentation est hors circuit.
6. Appareil d'alimentation selon la revendication 2, caractérisé en ce que l'appareil d'alimentation (2) comporte, au-dessus de la tablette (18) de l'installation (4) située à la suite, une partie en porte-à-faux sous laquelle se trouve, à une certaine distance, une enveloppe (14) qui contient des pièces d'accouplement (12) pour la liaison avec l'installation (4) et une unité de fiches fixe (8), ce qui donne un espace en forme de fente pour le logement d'une partie de la tablette (18) de l'installation (4) située à la suite.
7. Appareil d'alimentation selon la revendication 6, caractérisé en ce qu'une partie de paroi (19) de la paroi inférieure de l'enveloppe (14) constitue un organe de manoeuvre, d'un cliquet de rotation (12) du mécanisme d'accouplement, de sorte que la partie de paroi (19) peut être manoeuvrée par la main portante lors du mouvement d'accouplement de l'appareil d'alimentation (2) à l'installation (4).
EP82100057A 1981-02-10 1982-01-07 Appareil d'alimentation en pièces individuelles de matériau plat Expired EP0057810B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100057T ATE12755T1 (de) 1981-02-10 1982-01-07 Zufuehreinrichtung fuer einzelne flache materialstuecke.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH883/81A CH650995A5 (de) 1981-02-10 1981-02-10 Zufuehreinrichtung fuer einzelne flache materialstuecke.
CH883/81 1981-02-10

Publications (2)

Publication Number Publication Date
EP0057810A1 EP0057810A1 (fr) 1982-08-18
EP0057810B1 true EP0057810B1 (fr) 1985-04-17

Family

ID=4197395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100057A Expired EP0057810B1 (fr) 1981-02-10 1982-01-07 Appareil d'alimentation en pièces individuelles de matériau plat

Country Status (5)

Country Link
US (1) US4573673A (fr)
EP (1) EP0057810B1 (fr)
AT (1) ATE12755T1 (fr)
CH (1) CH650995A5 (fr)
DE (1) DE3263049D1 (fr)

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EP0057810A1 (fr) 1982-08-18
US4573673A (en) 1986-03-04
ATE12755T1 (de) 1985-05-15
CH650995A5 (de) 1985-08-30
DE3263049D1 (en) 1985-05-23

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