EP0408490B1 - Méthode et dispositif pour compter des produits imprimés - Google Patents

Méthode et dispositif pour compter des produits imprimés Download PDF

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Publication number
EP0408490B1
EP0408490B1 EP90810433A EP90810433A EP0408490B1 EP 0408490 B1 EP0408490 B1 EP 0408490B1 EP 90810433 A EP90810433 A EP 90810433A EP 90810433 A EP90810433 A EP 90810433A EP 0408490 B1 EP0408490 B1 EP 0408490B1
Authority
EP
European Patent Office
Prior art keywords
printed products
contact element
contact
printed
conveying direction
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 - Lifetime
Application number
EP90810433A
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German (de)
English (en)
Other versions
EP0408490A2 (fr
EP0408490A3 (en
Inventor
Walter Reist
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.)
Ferag AG
Original Assignee
Ferag AG
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Filing date
Publication date
Application filed by Ferag AG filed Critical Ferag AG
Publication of EP0408490A2 publication Critical patent/EP0408490A2/fr
Publication of EP0408490A3 publication Critical patent/EP0408490A3/de
Application granted granted Critical
Publication of EP0408490B1 publication Critical patent/EP0408490B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M7/00—Counting of objects carried by a conveyor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M2207/00—Indexing scheme relating to counting of objects carried by a conveyor
    • G06M2207/02—Counting of generally flat and overlapped articles, e.g. cards, newspapers

Definitions

  • the present invention relates to a method and a device according to the preambles of the independent claims.
  • the printed products in particular newspapers and magazines, coming from the rotary machine are fed to the further processing stations (for example, inserting devices of primary and main products, addressing and packaging stations, etc.) via suitable conveying means.
  • the further processing stations for example, inserting devices of primary and main products, addressing and packaging stations, etc.
  • suitable conveying means for example, inserting devices of primary and main products, addressing and packaging stations, etc.
  • the high conveying speed e.g.
  • Conventional mechanical counting devices generally have a projecting tongue, which experiences a certain deflection in each case through the upper edges of the printed products conveyed past and springs back into the rest position after passing the upper edge.
  • the number of deflection movements of this tongue is recorded by a counter.
  • the source of the error of such counting devices consists primarily in the fact that, in the case of printed products which are provided with a pre-fold in order to ensure a precisely defined insertion of further printed products, individual printed products are often counted twice, since the tongue is separated by both the main and the Pre-fold is deflected.
  • optoelectronic counters are also known which, for example, use a laser beam to scan the product stream flowing past and are able to recognize the individual printed products on the basis of differences in contrast.
  • accuracy of such counters can be significantly affected by strong light-dark differences on the printed products (photos, etc.)
  • the high costs which often lead to the fact that not all strategically desirable places, are particularly important a counter can be installed.
  • the advantages of the present invention can essentially be seen in the fact that the counter is not based on a passive or static principle, but rather to a certain extent on an active or dynamic principle.
  • the concept is based on the idea that the counting element does not simply "react” as usual, but rather “acts”, which means that the counting element adapts to the varying circumstances of the product flow on its own initiative and the accuracy is considerably increased.
  • the simplicity of the system also enables cost-effective designs.
  • FIGS. 1A, 1B, 1C illustrate the basic idea of the method according to the invention in a schematic manner.
  • a contact element K which is shown in FIG. 1A in its starting position, is moved at a speed v2 which is higher than the conveying speed v1, preferably parallel to the shingled stream, and with the trailing edge (trailing fold) F k of the printed product D k in Brought into contact.
  • This contact is interpreted as a counting pulse by suitable means, which will be discussed in more detail in connection with the following figures, and registered by means of a counter (not shown) (FIG. 1B).
  • FIG. 1C shows the end position of the contact element K, which is offset in the conveying direction by a distance H (stroke of the contact element) with respect to the starting position (FIG. 1A). The contact element is then moved back to its starting position and the counting process starts again.
  • the method described above is an active counting method in which the contact element K is not stationary and is simply deflected by the printed products conveyed past, but rather by an independent movement is brought into suitable contact with the printed products.
  • the behavior of the contact element K must also be matched to this system cycle.
  • the distance S between two successive printed products is subject to certain statistical fluctuations, which also result in a significant source of error in conventional counting methods.
  • the dashed lines show schematically that the majority of the printed products D k , D k + 1 are within a range of ⁇ ⁇ S ( ⁇ S can be, for example, the standard deviation or mean quadratic variance) from the theoretical position (the relations are chosen at random).
  • ⁇ S can be, for example, the standard deviation or mean quadratic variance
  • the contact element K In order to ensure that the contact element K also detects a printed product D ′ k + 1 that is behind the theoretical position by ⁇ S, the contact element K must be controlled in such a way that its forward movement with respect to the normal position of the printed product is triggered with a corresponding delay.
  • the distance b In order for a given printed product to be caught by the contact element K, the distance b must be smaller than the stroke H: H ⁇ a / (1 - v1 / v2)
  • the time cycle of the movement of the contact element K is preferably coupled to the superordinate system cycle T such that the contact element K executes a complete revolution during such a system cycle T.
  • FIG 3B several identical contact elements, for example K1 to K4, are moved at regular intervals on a circular track 61, for example.
  • You will be at an angular velocity ⁇ fixed, substantially transverse to the conveying direction of the printed products axis of rotation 62 rotated.
  • the rotational speed ⁇ and the radius R of the path 61 are chosen so that the tangential speed v2 of the contact elements K1 to K4 in turn is higher than the conveying speed v1 and the individual contact elements K1 to K4 based on a fixed viewer in turn follow in the system cycle T. .
  • FIG. 4 initially shows a simple arrangement for linearly driving the contact element K.
  • This is mounted, for example, on a linearly displaceably mounted slide 1, which is moved back and forth by a crank drive 2 operating in the system cycle.
  • the printed products D located, for example, on a rotating conveyor belt 3 are preferably stabilized by a pressure roller 4 arranged in the region of the contact element K. It has been shown in practical tests that the counting accuracy is improved if this pressure roller 4 is not positioned directly opposite the contact element K, but slightly offset from it.
  • the drive device shown only schematically in FIG. 4 is only to be regarded as a particularly simple one of many possible solutions.
  • the contact means (s) K move on an, for example, circular (open or closed) path (see FIGS.
  • FIG. 5A shows a counting device according to the invention in a section along the conveying direction (indicated by an arrow)
  • FIG. 5B shows the same device from behind in a section transversely to the conveying direction.
  • the contact element is designed as a wedge-shaped shell 10 and slidably mounted on the carriage 1.
  • the former is displaced relative to the carriage 1 in the counter-conveying direction against the force of a return spring 12.
  • FIG. 5A shows the normal position of the contact element 10 in dashed lines and the contact element displaced on the slide in a solid line.
  • a microswitch 13 is actuated, the signal of which is led via a cable 14 to a counter (not shown) and registered there.
  • FIG. 5B shows how the carriage 1 is mounted on rails 11 arranged below the conveying means, while the wedge 10 projects into the plane of the printed products D.
  • the conveying means for the printed products can consist, for example, of two conveyor belts (not shown) arranged in parallel, so that the counting device can be arranged in the space between them.
  • FIGS. 6A and 6B show a further embodiment of the device according to the invention, in which the contact element is designed as a pawl 20 which is rotatably mounted on the slide 1 about an axis 25.
  • This embodiment has the particular advantage that there is no risk that the printed products will be displaced from their position in the scale flow by the contact element will.
  • the pawl 20 shown in FIG. 6A at the moment of first contact with the printed product D is deflected by the latter to such an extent that the printed product is able to slide over it without being displaced (FIG. 6B) when the carriage 1 is advanced relative to the printed product.
  • the deflected pawl 20 is pulled back into the rest position by a return spring 22.
  • the deflection of the pawl is registered in this embodiment by a light barrier arrangement: a light beam emitted by an optical transmitter-receiver element 23 is reflected back by the pawl 20 when it is in the rest position ( Figure 6A) is located, while reflection of the light beam is prevented when deflecting the pawl, which is guided as a counting pulse via a cable 24 to a counter (not shown).
  • the detector 23 can also be designed as a passive light-sensitive element which reacts to the light incident when the pawl is deflected.
  • the contact element is designed as a resilient bracket 30.
  • This embodiment also has the advantage that the bracket is deflected from its rest position (FIG. 7A) by the pressure product D to be detected to such an extent that interference with the product flow is excluded (FIG. 7B).
  • the contact between bracket 30 and printed product D is registered in that an existing magnetic circuit between bracket 30 and detector 33 is temporarily interrupted by the deflection of the bracket, whereupon a corresponding counting pulse is forwarded to a counter 35 via a cable 34.
  • the counter 35 is only indicated schematically here and can be a local, for example electro-mechanical or electronic counter, or a central counter, in particular a computer control.
  • the above-described variants of the device according to the invention merely represent preferred embodiments thereof, and the invention is of course not limited to these.
  • the preferred embodiment with a counting device located below the scale flow was shown in the preceding figures. This corresponds to the preferred arrangement since the trailing edges to be detected thereby rest on the conveying means and thus have a defined height.
  • the counting device it is entirely within the scope of the invention to arrange the counting device above the scale flow, for example if, in a specific case, the scale flow is formed by overlapping printed products.
  • the accuracy to record each printed product twice by moving the contact element at a correspondingly increased speed v2. It is also evident that by arranging these devices at a given point in the production process and coupling them accordingly to a common counter, either the accuracy can be increased by redundancy or the operating frequency of the individual devices can be reduced.
  • the method according to the invention can of course also be used in other cases.
  • the detection of printed products conveyed at irregular time intervals can also be realized with the method according to the invention by, for example, another element (for example a simple light barrier) making a rough detection of the Undertakes print products and accordingly activates the contact element according to the invention at irregular time intervals.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)

Claims (21)

  1. Procédé pour la génération d'impulsions de comptage par des produits imprimés transportés dans un courant d'écailles, caractérisé en ce qu'il consiste en la répétition cyclique des étapes de procédé suivante :
    a) un élément de contact (K) est déplacé à partir d'une position de départ sensiblement dans le sens du déplacement des produits imprimés (D) à une vitesse (v₂) qui est plus grande que celle (v₁) des produits imprimés (D) au moins sur une partie du déplacement ;
    b) l'élément de contact (K) est amené en contact avec le bord postérieur (F) des produits imprimés (D) transportés situé en arrière ;
    c) une impulsion de comptage est produite lors du contact entre l'élément de contact (K) et le bord postérieur (F) d'un produit imprimé (D) ; et
    d) l'élément de contact est ramené à sa position de départ après la génération de l'impulsion de comptage.
  2. Procédé selon la revendication 1, caractérisé en ce que la répétition cyclique se fait en fonction de l'intervalle de temps moyen (T) entre deux produits imprimés successifs (Dk, Dk+1).
  3. Procédé selon l'une ou l'ensemble des revendications précédentes, caractérisé en ce que pendant l'intervalle de temps moyen (T) entre deux produits imprimés successifs (Dk, Dk+1), l'élément de contact (K) est déplacé vers l'avant à partir de sa position de départ sur une distance prédéterminée (H) de façon sensiblement linéaire et parallèle au sens de transport et ramené dans la position de départ après le contact avec le bord postérieur (Fk) d'un produit imprimé (Dk).
  4. Procédé selon la revendication 3, caractérisé en ce que la distance prédéterminée (H) est égale au moins à la somme de la moitié de la distance locale (S/2) entre deux produits imprimés successifs (Dk, Dk+1) plus le double de l'écart-type statistique (2 ΔS) des produits imprimés par rapport à leur position moyenne.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que la vitesse moyenne (v₂) de l'élément de contact (K) par rapport à la distance prédéterminée (H) de son déplacement vers l'avant et vers l'arrière est au moins égale au produit de la vitesse de transport (v₁) des produits imprimés (Dk) et du terme (1 + 4ΔS/S) des produits imprimés (Dk), S désignant l'écart local moyen entre deux produits imprimés successifs (Dk, Dk+1) et ΔS l'écart-type statistique des produits imprimés (Dk) par rapport à leur position moyenne.
  6. Procédé selon l'une ou l'ensemble des revendications 3 à 5, caractérisé en ce que la distance prédéterminée (H) correspond sensiblement à l'écart local (S) moyen entre deux produits imprimés successifs (Dk, Dk+1) et la vitesse moyenne (v₂) de l'élément de contact (K) sensiblement au double de la vitesse de transport (v₁).
  7. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'élément de contact (K) est ramené pendant l'intervalle de temps moyen (T) entre deux produits imprimés successifs (Dk, Dk+1) de sa position de départ à sa position de départ dans le même sens sur une trajectoire fermée.
  8. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce qu'une pluralité d'éléments de contact (K) sont déplacés sur une trajectoire fermée, de telle sorte que leur distance dans le temps par rapport à un point fixe corresponde à l'intervalle de temps moyen entre deux produits imprimés successifs (Dk, Dk+1).
  9. Dispositif pour le comptage de produits imprimés transportés dans un courant d'écailles, caractérisé en ce qu'il comporte un moyen de guidage (11 ; 51 ; 61) disposé dans la zone des produits imprimés (D) et orienté au moins partiellement dans le sens du transport pour un élément de contact (K), des moyens d'entraînement (2) au moyen desquels l'élément de contact (K) peut être déplacé au moins sur une partie du moyen de guidage (11 ; 51 ; 61) dans le sens du transport et plus rapidement que les produits imprimés (D) et peut être amené en contact avec le bord postérieur (Fk) d'un produit imprimé (Dk), des moyens de détection (13 ; 23 ; 33) pour la délivrance d'un signal lors du contact entre l'élément de contact (K) et le bord postérieur (Fk) d'un produit imprimé (D), ainsi que des moyens (14 ; 24 ; 34) pour la transmission du signal à un dispositif de comptage (35).
  10. Dispositif selon la revendication 9, caractérisé en ce que le moyen de guidage (11 ; 51 ; 61) est disposé en-dessous des produits imprimés (D) transportés.
  11. Dispositif selon la revendication 9 ou 10, caractérisé en ce que le moyen de guidage est conçu comme une voie sensiblement droite et parallèle au sens de transport des produits imprimés (D).
  12. Dispositif selon la revendication 11, caractérisé en ce que la voie présente deux rails (11) parallèles l'un à l'autre.
  13. Dispositif selon l'une ou l'ensemble des revendications 9 à 12, caractérisé en ce qu'il est prévu un élément coulissant (1) supporté de manière coulissante sur le moyen de guidage (11), sur lequel l'élément de contact (K) est supporté.
  14. Dispositif selon la revendication 13, caractérisé en ce qu'il est prévu un entraînement par manivelle (2), au moyen duquel l'élément coulissant (1) peut être déplacé vers l'avant sur la voie (11) à partir d'une position de départ sur une distance prédéterminée (H) dans la direction du transport et ramené dans la position de départ.
  15. Dispositif selon l'une quelconque des revendications 13 ou 14, caractérisé en ce que l'élément de contact (10) peut être déplacé d'une position de repos à une position de travail à contre-sens de la direction de transport lors du contact avec un produit imprimé (D) contre la force d'un ressort de rappel (12) sur l'élément coulissant (1).
  16. Dispositif selon l'une quelconque des revendications 13 ou 14, caractérisé en ce que l'élément de contact est conçu comme un cliquet (20) qui peut pivoter d'une position de repos à une position de travail lors du contact avec un produit imprimé (D) autour d'un axe de rotation (25) sensiblement perpendiculaire au patin (1).
  17. Dispositif selon l'une quelconque des revendications 13 ou 14, caractérisé en ce que l'élément de contact est conçu comme un étrier (30) qui peut être dévié d'une position de repos à une position de travail lors du contact avec un produit imprimé (D).
  18. Dispositif selon l'une ou l'ensemble des revendications 15 à 17, caractérisé en ce que le moyen de détection est conçu comme un microrupteur (13) dont l'état de commutation peut être influencé par le passage du moyen de contact (10 ; 20 ; 30) de la position de repos à la position de travail.
  19. Dispositif selon l'une ou l'ensemble des revendications 15 à 17, caractérisé en ce que le moyen de détection est conçu comme un barrage photo-électrique (23) dont l'état de commutation peut être influencé par le passage du moyen de contact (10 ; 20 ; 30) de la position de repos à la position de travail.
  20. Dispositif selon l'une ou l'ensemble des revendications 15 à 17, caractérisé en ce que le moyen de détection présente un circuit magnétique (33) dont l'état peut être influencé par le passage du moyen de contact (10 ; 20 ; 30) de la position de repos à la position de travail.
  21. Dispositif selon l'une ou l'ensemble des revendications 9 à 20, caractérisé en ce que sur le côté du courant d'écailles opposé à l'élément de contact (K) il est prévu un dispositif stabilisateur (4) au moyen duquel les produits imprimés (D) peuvent être fixés dans le courant d'écailles pendant l'opération de comptage.
EP90810433A 1989-07-10 1990-06-14 Méthode et dispositif pour compter des produits imprimés Expired - Lifetime EP0408490B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH256089 1989-07-10
CH2560/89 1989-07-10

Publications (3)

Publication Number Publication Date
EP0408490A2 EP0408490A2 (fr) 1991-01-16
EP0408490A3 EP0408490A3 (en) 1992-06-03
EP0408490B1 true EP0408490B1 (fr) 1994-09-07

Family

ID=4236551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810433A Expired - Lifetime EP0408490B1 (fr) 1989-07-10 1990-06-14 Méthode et dispositif pour compter des produits imprimés

Country Status (4)

Country Link
US (1) US5084906A (fr)
EP (1) EP0408490B1 (fr)
JP (1) JP2868294B2 (fr)
DE (1) DE59007042D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2311397A1 (fr) * 1997-12-30 1999-07-15 Carl Conrad Maeder Dispositif pour compter des objets plans
EP1042732B1 (fr) 1997-12-30 2002-02-27 Ferag AG Dispositif pour compter des objets achemines en une formation a recouvrement
EP1044429B1 (fr) * 1997-12-30 2002-08-07 Ferag AG Dispositif pour compter des produits achemines en une formation a recouvrement
CH691202A5 (fr) * 1999-01-04 2001-05-15 G & E Bouille Sa Fabrique De M Boîte de montre comprenant une parure placée annulairement.
ATE373283T1 (de) * 1999-01-05 2007-09-15 Ferag Ag Nachweisvorrichtung
CN112140721A (zh) * 2020-09-27 2020-12-29 湖北泰友纸业有限公司 一种瓦楞纸板印刷用印刷量自调节计数系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1841711A (en) * 1927-04-11 1932-01-19 Production Meter Company Counting and displacing apparatus
CH652993A5 (de) * 1981-11-10 1985-12-13 Ferag Ag Zaehleinrichtung zum zaehlen von laengs einer foerderbahn bewegten flaechigen erzeugnissen.
CH661810A5 (fr) * 1984-10-12 1987-08-14 Bobst Sa Dispositif pour le comptage d'objets plats disposes en nappe.

Also Published As

Publication number Publication date
US5084906A (en) 1992-01-28
DE59007042D1 (de) 1994-10-13
EP0408490A2 (fr) 1991-01-16
EP0408490A3 (en) 1992-06-03
JPH03115067A (ja) 1991-05-16
JP2868294B2 (ja) 1999-03-10

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