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EP0073388B1 - Dispositif pour changer le sens de mouvement de lettres et des objets rectangulaires similaires - Google Patents

Dispositif pour changer le sens de mouvement de lettres et des objets rectangulaires similaires Download PDF

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Publication number
EP0073388B1
EP0073388B1 EP82107406A EP82107406A EP0073388B1 EP 0073388 B1 EP0073388 B1 EP 0073388B1 EP 82107406 A EP82107406 A EP 82107406A EP 82107406 A EP82107406 A EP 82107406A EP 0073388 B1 EP0073388 B1 EP 0073388B1
Authority
EP
European Patent Office
Prior art keywords
conveyor
consignments
rollers
conveying
pairs
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
EP82107406A
Other languages
German (de)
English (en)
Other versions
EP0073388A3 (en
EP0073388A2 (fr
Inventor
Gisbert Dr. Burkhardt
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0073388A2 publication Critical patent/EP0073388A2/fr
Publication of EP0073388A3 publication Critical patent/EP0073388A3/de
Application granted granted Critical
Publication of EP0073388B1 publication Critical patent/EP0073388B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B07C1/18—Orientating articles other than in a stream, e.g. turning, deflecting or changing direction
    • 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
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/34—Modifying, selecting, changing direction of displacement
    • B65H2301/341—Modifying, selecting, changing direction of displacement without change of plane of displacement
    • B65H2301/3411—Right angle arrangement, i.e. 90 degrees
    • B65H2301/34112—Right angle arrangement, i.e. 90 degrees changing leading edge

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a generic device is known from DE-B-1 199 697.
  • the mail items are transported either in the direction of their long or in the direction of their short edges.
  • the latter has the advantage that the desired distribution capacity (in letters per unit of time) can be achieved with a lower conveying speed, since then with the same gap between the letters, instead of the length, their height is decisive for the throughput.
  • the initially stacked letters are usually pulled (separated) from the stack in the direction of their long edges, a generic device is required in this case, in which the position or the direction of movement of the letters is changed accordingly.
  • the «first» conveyor section of the device known from the aforementioned patent specification is an upright conveyor section, within which the mail items are guided on a sliding surface that represents the specified reference line in the direction of their long edges against a fixed stop - in their end-of-motion phase, braked by a brush roller - in order to then to be led vertically upwards in the further direction of their right-angled "further” conveyor line, ie in the direction of the short edges of the mail items.
  • the vertical conveying path contains fingers which are arranged at regular intervals and which grip the letter that has come in and is brought to a standstill on its lower longitudinal edge. This device can therefore only be used for synchronous transport. H. the consignments must arrive at the same leading edge distances and in a certain time relationship to the position of the fingers.
  • the invention has for its object to provide a generic device that allows an "asynchronous" sequence of the programs.
  • DE-A-2 743 816 discloses a device for feeding flat conveyors from a first, horizontally running, upright conveying section to a second conveying section, which extends from the first at right angles upwards, in which between the first and second conveying sections is less than 45 ° third conveyor line inclined to the first and second conveyor line is arranged. All conveyor lines work with conveyor belts, which press the conveyor pieces firmly between them, so that when transferring from one conveyor track to the next, the conveyor pieces have to be plucked out of the preceding conveyor track, which easily results in damage to the conveyor pieces. Due to the lack of displaceability of the conveying pieces in the transfer area, their positional adjustment in the target position relative to the subject of the invention is difficult.
  • the substantially horizontal conveying plane of all conveying lines of the device according to the invention is in terms of its problems in contrast to the predominantly vertical conveying (upright conveying) of the conveying pieces in practice, for example also with the postal conveying device known from DE-B-1 116 602.
  • the mail items emerge from the known device by means of an output-side conveyor line parallel to their original input direction (into the input-side conveyor line), ie instead of essentially 90 ° in the device according to the invention, the further transport angle is approximately 0 ° in the known device; only with knowledge of the invention (retrospectively) could this known device be modified to an exit angle of approximately 90 °.
  • the mail items to be processed (letters) 1 are initially in the stack of a separator 2, through which they are individually pulled off to the right in the direction of their long edges and fed upright to a first conveyor line 10.
  • This runs in a first direction and contains at its exit a first conveyor section 10a, in which the mail items are not carried rigidly in the usual manner, but are displaceable, and a conveyor device 10b in front of them.
  • the task of the conveyor 10b is to guide the mailpieces 1 in the first direction I in such a way that their plane ultimately lies essentially horizontally and that one of the long edges moves along a predetermined reference line 11 before entering the conveyor section 10a. Their design therefore depends on the original position in which the mail items enter the device.
  • the conveying device 10b contains a straightening section 3, in which the mail items entering on edge are aligned with their lower long edge at a reference plane 4, and a turning section 5, in which the mail items are recorded immovably and by a predetermined one, in the plane of the mail items and axis parallel to conveying direction I can be turned by 90 °. They are then such that their original lower edge now moves along the reference line 11.
  • a device with the properties of the straightening section 3 is known, for example, from the above-mentioned DE-B-1 116 602. 1 consists of a first endless belt 6, which is guided around a vertical roller 7 and a horizontal roller 8, and an endless belt 6 ', which is adjacent to the former, which is about a vertical roller 7' and one under the Roll 8 lying horizontal roll is guided. In principle, this turning route is known from DE-B-1 234 629.
  • the first conveyor section 10a is explained below with reference to FIGS. 2 to 4. This is followed by a first deflection device 20 with conveyor rollers 21 and 22 (with associated counter-rollers) interacting in pairs, which detect the mail items 1 at the front edge and laterally in a second direction II from the first conveyor section 10a with parallel displacement to the conveying direction of the supplying "first" conveyor line Lead away, which includes an acute angle a ⁇ 45 ° with the first direction I.
  • a second conveyor line 30 runs, from which the mail items that are carried away are detected and the output of which forms a second conveyor section 30 a, in which the mail items are displaceably carried.
  • the device according to the invention contains a second deflection device 40 with conveyor rollers interacting in pairs (roller 23 with associated counter-roller), which capture the mail items at the leading long edge and laterally lead away from the second conveyor section 30a in the further direction 111, which are aligned with the first direction I encloses an angle ⁇ (see also FIG. 7) of essentially 90 ° - which achieves the desired change in the direction of movement of the mail items.
  • FIG. 1 shows, in a further embodiment of the invention, a third conveyor section 50 ', a delay device 60 and a conveyor device 70, the purpose of which is explained below.
  • some mail items 1 are shown in positions characteristic of the mode of operation of the device, wherein a small and a large size mail item is shown as if the mail items were transparent.
  • the task of the conveyor section 10a is to now carry the mail items 1, which have been brought along with a long edge along the reference line 11, so that they can be moved, i.e. so that they can be moved by an additional external force deviating from the previous conveying direction I or the corresponding conveying speed.
  • this is achieved by the following configurations:
  • the conveyor section 10a contains a lower conveyor belt 13, which is guided around a driven roller 12 and on which the mail items 1 rest.
  • Fig. 4 shows a modification in which the belt 15 'is guided with the aid of deflection rollers 17 and 18 and the roller 14' so that it runs parallel to the conveyor belt 13 at a short distance. Although there is generally no contact between the belt 15 'and the mail items, this belt also increases the security of entrainment in the conveying direction I by generating or maintaining a corresponding air flow. In the embodiment according to FIGS. 2 and 3, it is expedient to attach a guide surface 19 over the uncovered end of the conveyor belt 13.
  • the first deflection device 20 contains a plurality of driven conveyor rollers which interact in pairs and which are aligned in accordance with the second conveying direction II. At least two pairs of conveyor rollers 21 and 22 are arranged in the conveying path of the mail items 1 in such a way that they essentially simultaneously detect the front edge of the mail items being brought up. In addition, at least one further pair of conveyor rollers 23 are arranged for engagement on the long edge so that their detection area (i.e. the line on which the rollers touch) is at a small lateral distance d from the reference line 11. If the formats of the mailpieces to be processed are very different, the pairs of conveyor rollers mentioned can be supplemented by further pairs, of which the roller 24 is shown in FIG. 2 with dashed lines.
  • the front edge of the consignment 1 does not run here against a fixed stop, but instead moves into the detection range of the two pairs of the first conveyor section 10a during its movement in the conveying direction I Conveyor rollers 21 and 22, the peripheral speed of which in the second direction II in any case has a considerable speed component in the first direction 1. It is possible to select this conveying speed in such a way that the named speed component is equal to the original conveying speed in the first direction 1. In general, however, the conveying speed of the first deflecting device 20, like that of the second deflecting device 40, is selected empirically in such a way that overall an optimal operating behavior results.
  • the consignment 1 After the detection of its front edge by the conveyor roller pairs 21 and 22, the consignment 1 is forcibly moved laterally out of the conveyor section 10a and with a parallel displacement to the original conveying direction in the direction II. Shortly thereafter, the originally lower long edge also comes into the detection area of the conveyor rollers 23 (or 23 and 24), which support the forwarding of the mail item into the second conveyor line 30.
  • rollers 34, 35 and 36 are arranged in such a way that the incoming mail items are initially recorded relatively rigidly in the region of the roller 35, while they are displaceably carried along in the region of the outlet forming the second conveyor section 30a.
  • the second deflection device 40 consists of three pairs of conveyor rollers 41, 42 and 43 which are arranged such that their detection area (i.e. the connecting straight line of the centers of their contact lines) runs essentially parallel to the reference line 11. As soon as the consignment 1 with its leading long edge comes into this detection area, it is laterally pulled away from the second conveying section 30a by a parallel displacement to the original conveying direction in the third direction 111 by the aforementioned conveying rollers.
  • FIG. 2 shows a third conveyor section 50, which also continues in the third direction III in continuation of the path of the mail items carried away by the deflection device 40 and, according to FIG. 6, consists of two conveyor belts 53 and 54 guided around rollers 51 and 52. These conveyor belts are guided with the aid of a support roller 55 in such a way that the mailpieces fed in are rigidly recorded and also continued.
  • the described two-way deflection of the mail items is generally sufficient to solve the task at hand, it can be advantageous under particularly unfavorable operating conditions - in particular with regard to the nature of the mail items - between the second conveying section 30a and the second deflection device 40 according to FIG. 8 to insert a further deflection device 20a, with pairs of conveyor rollers, which capture the mail items at the leading long edge and laterally move them out of the second conveyor section, parallel to the original conveying direction, in a direction Ila which lies between the directions II and III.
  • the direction Ila thus includes an angle y with the original conveying direction, for which the relationship a ⁇ y ⁇ applies.
  • a further conveyor section would then follow, in which the consignments are slidably carried in the direction Ila.
  • a stop surface 45 in the region of the second deflection device 40 or further deflection device 20a. It is arranged at the position where the short front edge of the mail items 1 is when its long edge is in the detection area of the conveyor roller pairs 41 to 43.
  • This stop may prevent particularly heavy mail items or those with an unfavorable position of the center of gravity from reaching an undesired position due to inertial forces.
  • this stop surface it is possible to design this stop surface as a conveyor belt 48 guided around rollers 46 and 47.
  • the circumferential speed of the conveyor roller pairs 41 to 43 can be chosen to be lower than the conveying speed in the second conveying direction II.
  • the conveyor rollers 21 to 24, 41 to 43 and 61 to 63 of the deflection devices 20, 20a and 40 or the deceleration device 60 must have a surface with a high coefficient of friction and that they can adapt to different letter thicknesses in a known manner .
  • the latter can e.g. can be achieved in that the shaft of the respective lower roller of a pair of rollers is rigid and the shaft of the upper roller is mounted on a rocker arm. It may also be sufficient if the upper rollers are provided with a thick, elastic covering when they are firmly supported.
  • the respective lower rollers can be mounted on a common shaft and the upper rollers individually on rockers or - if they have a thick elastic covering - also on a common shaft.
  • rollers mentioned are generally driven so that the rollers belonging to one and the same deflection device have the same peripheral speed, it would also be possible within the scope of the invention, for. B. to drive the pairs of rollers 21 to 24 of the first deflection device 20 in adaptation to certain working conditions with coordinated, slightly different peripheral speeds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Sorting Of Articles (AREA)

Claims (8)

1. Dispositif pour changer le sens du mouvement de lettres et d'objets rectangulaires similaires (1), arrivant suivant la direction de leurs grands côtés, de façon qu'ils sortent suivant la direction de leurs petits côtés, avec un premier transporteur (10) d'alimentation suivant une première direction (I), dans lequel les objets sont déplacés avec un de leurs grands côtés le long d'une droite de référence prédéterminée (11), et avec un deuxième transporteur (50) évacuant les objets dans une autre direction (3) qui fait avec la première un angle de sensiblement 90°, ledit dispositif étant caractérisé en ce que:
a) le premier transporteur (10) comporte à la sortie une première section (10a) dans laquelle les objets sont entraînés avec translation et dont le plan est sensiblement horizontal;
b) un premier déflecteur (20) est prévu avec des paires de galets transporteurs (21. . . 24) qui saisissent les objets sur leur front avant, puis un grand côté et les évacuent latéralement de la première section transporteuse (10a) avec translation parallèle à la direction du premier transporteur (10), suivant une deuxième direction (II) formant avec la première (I) un angle aigu (a) inférieur ou égal à 45°;
c) un deuxième transporteur (30) suivant la deuxième direction (II) est prévu pour saisir les objets évacués, sa sortie formant une deuxième section transporteuse (30a) dans laquelle les objets sont entraînés avec translation;
d) parmi les galets transporteurs (21... 24),
1) deux paires au moins (21, 22) sont disposées sur le trajet de façon à saisir à peu près simultanément le front avant des objets, et
2) une paire au moins (23, 24) est disposée pour agir sur le grand côté, de façon que sa zone de saisie présente une faible distance latérale (d) à la droite de référence (11); et
e) un deuxième déflecteur (40) est prévu avec d'autres paires de galets transporteurs (41... 43), qui saisissent les objets par leur grand côté et les évacuent latéralement de la seconde section transporteuse (30a) suivant la nouvelle direction (III).
2. Dispositif selon revendication 1, caractérisé par l'insertion des éléments suivants entre la deuxième section transporteuse (30a) et le deuxième déflecteur (40):
a) un nouveau déflecteur (20a) avec des paires de galets transporteurs dont la zone de saisie est sensiblement parallèle à la droite de référence prédéterminée (11) et qui saisissent les objets (1) sur leur grand côté, puis les évacuent latéralement de la deuxième section transporteuse (30a), suivant une troisième direction (iia) située entre la deuxième (II) et la nouvelle (III) direction,
b) une nouvelle section transporteuse, dans laquelle les objets sont entraînés avec translation suivant la troisième direction.
3. Dispositif selon une des revendications 1 ou 2, caractérisé en ce que la première (10a) et la deuxième section transporteuse (30a) comportent chacune une courroie transporteuse (13 ou 33), sur laquelle les objets (1) reposent par leur surface, et une deuxième courroie (15 ou 37), qui est guidée au-dessus de la courroie transporteuse, dont elle recouvre au moins partiellement la longueur, de façon à n'exercer sur les objets qu'une force nulle ou faible.
4. Dispositif selon une quelconque des revendications 1 à 3, caractérisé en ce qu'une surface de butée (45) est disposée au voisinage du deuxième déflecteur (40), à l'endroit où se trouve le front avant des objets (1) quand leur grand côté atteint la zone de saisie des galets transporteurs d'évacuation latérale (41... 43).
5. Dispositif selon revendication 4, caractérisé en ce que la surface de butée est constituée par une courroie transporteuse (48).
6. Dispositif selon une quelconque des revendications 1 à 5, caractérisé par:
a) un troisième transporteur (50') faisant suite à la sortie du transporteur supplémentaire (50) et comprenant une troisième section transporteuse (50a) dans laquelle les objets sont entraînés avec translation;
b) un ralentisseur (60) faisant suite à la troisième section transporteuse (50a), avec des paires de galets transporteurs (61... 63) dont la zone de saisie est perpendiculaire à la nouvelle direction (lll) et dont la vitesse de transport est inférieure à celle du troisième transporteur (50').
7. Dispositif selon revendication 4, caractérisé en ce que la vitesse circonférentielle des paires de galets transporteurs (41... 43) du deuxième déflecteur (40) est inférieure à la composante suivant la nouvelle direction (III) de la vitesse de transport suivant la deuxième direction (II).
EP82107406A 1981-08-29 1982-08-14 Dispositif pour changer le sens de mouvement de lettres et des objets rectangulaires similaires Expired EP0073388B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3134266 1981-08-29
DE3134266A DE3134266C2 (de) 1981-08-29 1981-08-29 Vorrichtung zum Ändern der Bewegungsrichtung von in Richtung ihrer langen Kanten einlaufenden Briefen und ähnlichen rechteckigen Sendungen

Publications (3)

Publication Number Publication Date
EP0073388A2 EP0073388A2 (fr) 1983-03-09
EP0073388A3 EP0073388A3 (en) 1983-04-27
EP0073388B1 true EP0073388B1 (fr) 1986-11-20

Family

ID=6140449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107406A Expired EP0073388B1 (fr) 1981-08-29 1982-08-14 Dispositif pour changer le sens de mouvement de lettres et des objets rectangulaires similaires

Country Status (3)

Country Link
US (1) US4527792A (fr)
EP (1) EP0073388B1 (fr)
DE (2) DE3134266C2 (fr)

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Publication number Priority date Publication date Assignee Title
DE4243986C2 (de) * 1992-12-23 2001-09-13 Gao Ges Automation Org Vorrichtung zum Ändern der Bewegungsrichtung von flachem, rechteckigen Blattgut

Also Published As

Publication number Publication date
DE3134266C2 (de) 1984-11-29
DE3134266A1 (de) 1983-03-17
US4527792A (en) 1985-07-09
EP0073388A3 (en) 1983-04-27
EP0073388A2 (fr) 1983-03-09
DE3274334D1 (en) 1987-01-08

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