EP0881149B1 - Machine de liage d'objets avec un dispositif de tensionnement opérant en fonction de la hauteur des objets - Google Patents

Machine de liage d'objets avec un dispositif de tensionnement opérant en fonction de la hauteur des objets Download PDF

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Publication number
EP0881149B1
EP0881149B1 EP98108211A EP98108211A EP0881149B1 EP 0881149 B1 EP0881149 B1 EP 0881149B1 EP 98108211 A EP98108211 A EP 98108211A EP 98108211 A EP98108211 A EP 98108211A EP 0881149 B1 EP0881149 B1 EP 0881149B1
Authority
EP
European Patent Office
Prior art keywords
looping
strap
height
tensioning
machine according
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
EP98108211A
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German (de)
English (en)
Other versions
EP0881149A1 (fr
Inventor
Roland Schwede
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.)
SMB Schwede Maschinenbau GmbH
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SMB Schwede Maschinenbau GmbH
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Publication date
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Application filed by SMB Schwede Maschinenbau GmbH filed Critical SMB Schwede Maschinenbau GmbH
Publication of EP0881149A1 publication Critical patent/EP0881149A1/fr
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/22—Means for controlling tension of binding means

Definitions

  • the invention relates to a strapping machine for strapping objects, like product stacks from magazines, magazines or any other any batch goods, such as packages, e.g. B. shipping boxes u.
  • a strapping machine for strapping objects, like product stacks from magazines, magazines or any other any batch goods, such as packages, e.g. B. shipping boxes u.
  • packages e.g. B. shipping boxes u.
  • Such a strapping machine is e.g. B. from the older German patent application DE 196 02 579 A1 known.
  • This strapping machine points in addition to those notoriously available with such equipment Components such as machine frame, work table, belt guide frame for Guide the strapping around the object to be strapped as loose Loop, shooting device for shooting the strapping in the tape guide frame and return device for returning the Strapping tape from the strap guide frame and to put on the Strapping around the object to be strapped also a stack height dependent Tensioning device for tightening the strapping around the object.
  • a back tension dependent on the stack height in this Context is advantageous because the strapping band the product stack hold together tightly, but the tightening is all the more pronounced must be, the softer, d. H.
  • the back tensioning device In the back tensioning device according to the aforementioned older patent application is an elaborate mechanical construction for stack height dependent Adjustment of the back tension provided. So there is one pivotable link lever with a control link available, the over a mechanical scanning of the stack height of the product stack is adjustable is.
  • the mechanical scanning device is e.g. B. one Lever transmission mechanism between the press beam, the one to be strapped Stack compressed before applying the strapping, and the pivoting link lever with a control link.
  • the latter operated a control lever for a clamping lever on the back tension generating Clamping lever of the back tensioning device is pivoted.
  • the control lever controls the clamping lever so that the stack height decreases blocking the clamping device to fix the strapping increasingly delayed and the tensioning of the strapping is reduced.
  • the object of the invention based on a strapping machine with object height dependent To create back tension with reduced mechanical effort greater flexibility in the object-dependent setting of the back tension brings with it.
  • a height detection device for the strapping Object provided.
  • the sensor is a control device coupled, by means of the back tension on the back tensioning device is adjustable.
  • This control device can, for example are a timing control that a drive roller pair for the strapping is activated for a certain time and the strapping so that it contracts by a certain back tension.
  • the control device a motor control for a torque adjustable DC motor, which with the help of the controller Strapping tightens with a certain tension.
  • a Force-dependent back tension can also be set using an electronically adjustable Torque clutch can be realized when reaching a certain, electronically adjustable clamping force can be triggered.
  • the back tension is therefore based on an appropriate design of the characteristic function practically arbitrarily adjustable and to the respective circumstances of the objects to be strapped. So that can be an inventive Strapping machine by selecting the appropriate Identification function can be adapted to different customer specifications.
  • the Invention of the tensioning path of the strapping but also the tensioning force be defined as parameters in the identification function. This sets up depends primarily on the type of control device for the back tensioning device and the latter itself.
  • the identification function can be a continuous function. So that's one stepless adjustment of the back tension depending on the object height possible. It should be noted that this is a relatively accurate resolution of the sensor and adjustability of the back tension on the back tensioning device must be possible to the characteristic function in the form of a continuously variable Make full use of the continuous characteristic curve and implement its accuracy to be able to.
  • the characteristic function is therefore preferred from a practical point of view be a step function. This means that objects are for certain object height ranges with a fixed value of the return travel or the Tensioning force are strapped. The sequence of steps does not necessarily have to be be steadily increasing or decreasing, if this is practical require.
  • the sensor is advantageously an ultrasonic sensor, which is arranged in the upper horizontal strut of the tape guide frame and from there senses the height of the object passing beneath it.
  • An advantageous development of the strapping machine according to the invention refers to an interface for transmitting one for the Object height representative signal using the height detection device won to external devices.
  • the strapping machine into a packaging line into the strapping machine
  • Integrated height detection device for others Handling of the object can be used, such as. B. the control of a non-contact printhead for subsequent labeling the top of the object.
  • the return control of the strapping can be adjusted to the object height. So that's a significant one Time advantage in the return process compared to the prior art to reach. The latter provides for this regardless of the object height Strapping for retrieval from the strap guide frame always for to transport a constant time using the pair of conveyor rollers. At very high objects, the belt lays down very early during the return cycle around the object so that the remaining conveyance time of the return device is practically "given away". With a height detection for the Object and a corresponding adjustment of the return time can immediately then the actual clamping process take place, so that the cycle time for one Strapping is optimally adapted to the object height.
  • object recognition can be undertaken.
  • the sensor recognizes, for example, the course of the one facing it Surface of the object and can have the appropriate coordinates compare with saved coordinates of a certain object and thus recognize this. On this basis, one can do this Object function assigned to selected and a corresponding Back tension can be made.
  • the strapping machine has one Rollers 1 mounted machine frame 2 on which a work table 3 is attached is.
  • the work table 3 has conveyor belts (not shown), by means of which the objects to be strapped - e.g. B. a magazine stack 4 in Fig. 1 or a shipping box 5 in Fig. 2 - in the strapping position the work table 3 can be transported.
  • a turntable can also be integrated in the work table 3, as can be found in EP 0 445 429 B1.
  • the drive roller pair 11 with its drive motor 13 and the motor 14 thus serves as a common insertion and return device for the strapping 7 (Fig. 3).
  • the back tensioning device 10 shown schematically in FIGS. 1 to 3 has a rubberized tension pulley 15 with a curved pressure rail 16 cooperates.
  • the latter represents a wrap angle of the strapping 7 of about 90 ° around the tension pulley 15 and a tight one Frictional contact between tensioning roller 15 and strapping 7 is secure. This allows a rotation of the tension roller 15 with the help of its drive motor 17 a high tensile force for retensioning the strapping 7 around the object 4, 5 to be strapped.
  • a back tension dependent on the object height for the object to be strapped To enable 4, 5 is a height detection device on the strapping machine 18 provided, the structure of which is shown schematically in FIG. 3 is shown.
  • This includes a non-contact ultrasonic sensor 19, the center of the upper horizontal strut 20 of the tape guide frame 6 is arranged.
  • His club-like measuring field 21 is vertically behind directed below towards the work table 3 and thus covers the top 22 of the objects to be strapped 4, 5.
  • 5 representative signal that Processable by the control device 23 for the tensioning device 10 is.
  • control device 23 accesses a storage device 24 to, in which one or more identification functions for the back tension of the Strapping 7 are stored depending on the object height H.
  • Control device 23 and storage device 24 can be used together with the motor control 14 - and of course other machine control groups - based on a programmable logic controller or microprocessor control will be realized.
  • Fig. 4 The basis of Fig. 4 is the fact that for the back tension the back tension path x of the strapping 7 as a parameter in the identification function is set.
  • "Rückspannweg x" means the distance over which to the return of the strapping 7 with the help of the drive roller pair 11 then the tension roller 15 the strapping 7 further in Direction of arrow 25 according to FIG. 3 pulls.
  • the control device 23 receives the height H via the ultrasonic sensor 19 of the object 4, 5 to be strapped.
  • the tensioning device works 10, for example with the characteristic function K1, increases with increasing Object height H the backward travel x up to a maximum of 200 mm with an object height of 500 mm.
  • Such a continuous linear function is suitable for example for magazine stack 4 (Fig. 1) because such stacks of magazines are becoming increasingly compressible with higher heights and thus for a tight tensioning of the strapping 7 a high one Return path is required.
  • the characteristic functions K3 and K4 give continuous, but not linear characteristic functions again, due to attempts for a product-dependent optimal strapping found and entered in the storage device can be.
  • the characteristic function K5 is a continuous function, the slope of which, however Characteristic functions K1 to K4 is opposite. This in turn can result a specially necessary treatment of the goods to be strapped, the only requires a very small back tension path for large stack heights H, while for very low objects a very large back tension path x is selected becomes.
  • Characteristic function K5 can be used.
  • the amount of data that is generated by the control and storage device 23, 24 is to be mastered, limited and correspondingly simpler interpretations these devices 23, 24 can also be used with step functions be worked for the identification function, as is done by the identification function K6 is indicated in Fig. 4. So with this identification function for an object height between 0 and 100 mm with a tensioning path x of 10 mm, with an object height between 100 and 200 mm with a back tension x of 50 mm, with an object height between 200 and 300 mm with a Clamping distance x of 100 mm etc. worked. As from the above Explanations can also be derived with the help of the invention Strapping machine and its height detection device also a kind Object detection can be made. If on a strapping machine e.g. B.
  • the control device 23 with the Motor controller 14 for the drive roller pair 11 coupled so that the Actuation time for the drive roller pair adapted to the product height and thus the strapping time has to be optimized for each object.
  • the drive roller pair 11 by the engine control 14 only put into operation for a short time, after which the actual back tensioning can be done.
  • a low object becomes a longer run of the drive roller pair 11 may be necessary to the strapping before the actual tensioning to place the object.
  • an interface device 26 is also shown in FIG whose help is the values obtained by the height detection device 18 passed on to other external devices via the object height.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Claims (10)

  1. Machine de liage pour lacer des objets, tels que des piles de produits, paquets et analogue, comprenant
    un bâti de machine (2);
    une table de travail (3);
    un cadre de guidage (6), disposé sur la table de travail (3), pour guider, comme boucle lâche, un ruban de liage (7) autour de l'objet à lacer disposé sur la table de travail (3) dans le cadre de guidage (6);
    un dispositif d'insertion (11) pour insérer le ruban de liage dans le cadre de guidage (6);
    un dispositif de retour (11) pour retirer le ruban de liage (7) hors du cadre de guidage (6) et pour placer le ruban (7) autour de l'objet à lacer (4, 5); et
    un dispositif de tensionnement (10) pour raidir le ruban de liage (7) autour de l'objet (4, 5),
    caractérisée par
    un dispositif de détection de hauteur (18) pour l'objet à lacer (4, 5), qui comprend
    un détecteur sans contact pour la palpation de la hauteur (H) de l'objet; et
    une unité de commande (23), y couplé, pour le dispositif de tensionnement (10) pour ajuster le tensionnement en fonction de la hauteur de l'objet; et
    une unité de mémoire (24) pour mémoriser au moins une fonction caractéristique (K1 à K6) du tensionnement en fonction de la hauteur (H) de l'objet, l'unité de commande (23) accédant à la fonction caractéristique (K1 à K6) dans l'unité de mémoire (24) pour ajuster le tensionnement.
  2. Machine de liage selon la revendication 1, caractérisée en ce que, comme tensionnement, la longueur de tensionnement (x) du ruban de liage (7) est fixée comme paramètre dans la fonction caractéristique (K1 à K6).
  3. Machine de liage selon la revendication 1, caractérisée en ce que, comme tensionnement, une force de tensionnement, qui agit sur le ruban de liage (7), est fixée comme paramètre dans la fonction caractéristique.
  4. Machine de liage selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la fonction caractéristique (K1 à K5) est une fonction continue.
  5. Machine de liage selon l'une quelconque des revendication 1 à 3, caractérisée en ce que la fonction caractéristique (K6) est une fonction discontinue.
  6. Machine de liage selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le détecteur (19) est un détecteur ultrasonore.
  7. Machine de liage selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le détecteur (19) est disposé dans l'entretoise horizontale supérieure (20) du cadre de guidage (6).
  8. Machine de liage selon l'une quelconque des revendications 1 à 7, caractérisée par un interface (26) pour la transmission à des appareils externes d'un signal représentatif de la hauteur de l'objet (H).
  9. Machine de liage selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le dispositif de détection de hauteur (18) est couplé au dispositif de tensionnement (11, 14, 18) de telle sorte que la commande du tensionnement du ruban de liage (7) soit ajustée à la hauteur de l'objet (H).
  10. Machine de liage selon l'une quelconque des revendications 1 à 9, caractérisée en ce qu'une reconnaissance des objets est réalisable à l'aide du dispositif de détection de hauteur (18).
EP98108211A 1997-05-27 1998-05-06 Machine de liage d'objets avec un dispositif de tensionnement opérant en fonction de la hauteur des objets Expired - Lifetime EP0881149B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722066A DE19722066A1 (de) 1997-05-27 1997-05-27 Umreifungsmaschine zum Umreifen von Objekten mit einer objekthöhenabhängigen Rückspanneinrichtung
DE19722066 1997-05-27

Publications (2)

Publication Number Publication Date
EP0881149A1 EP0881149A1 (fr) 1998-12-02
EP0881149B1 true EP0881149B1 (fr) 2000-03-22

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ID=7830582

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EP98108211A Expired - Lifetime EP0881149B1 (fr) 1997-05-27 1998-05-06 Machine de liage d'objets avec un dispositif de tensionnement opérant en fonction de la hauteur des objets

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Country Link
US (1) US6003438A (fr)
EP (1) EP0881149B1 (fr)
DE (2) DE19722066A1 (fr)

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CN105711880A (zh) * 2015-11-04 2016-06-29 安庆市芊芊纸业有限公司 一种纸杯外壁件成品包装检测系统
CN105466377A (zh) * 2015-12-23 2016-04-06 广东长盈精密技术有限公司 尺寸检测装置
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Also Published As

Publication number Publication date
DE19722066A1 (de) 1998-12-03
US6003438A (en) 1999-12-21
DE59800104D1 (de) 2000-04-27
EP0881149A1 (fr) 1998-12-02

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