EP4090480B1 - Agrafeuse pour métal - Google Patents

Agrafeuse pour métal Download PDF

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Publication number
EP4090480B1
EP4090480B1 EP21700736.8A EP21700736A EP4090480B1 EP 4090480 B1 EP4090480 B1 EP 4090480B1 EP 21700736 A EP21700736 A EP 21700736A EP 4090480 B1 EP4090480 B1 EP 4090480B1
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EP
European Patent Office
Prior art keywords
punching
punching tool
tool
mpa
lie
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.)
Active
Application number
EP21700736.8A
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German (de)
English (en)
Other versions
EP4090480C0 (fr
EP4090480A1 (fr
Inventor
Melanie INGENDOH
Manuel Bendler
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.)
SMS Group GmbH
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SMS Group GmbH
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Publication date
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Application granted granted Critical
Publication of EP4090480C0 publication Critical patent/EP4090480C0/fr
Publication of EP4090480B1 publication Critical patent/EP4090480B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
    • B21C47/247—Joining wire or band ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/034—Joining superposed plates by piercing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding

Definitions

  • the present invention relates to a stapling machine for connecting an end section of an outgoing metal strip to a start section of an incoming metal strip for a continuously operated strip system, as is typically used in metal strip treatment or metal strip finishing plants.
  • the present invention relates to a strip system comprising the stapling machine according to the invention and a method for connecting an end section of an outgoing metal strip to a start section of an incoming metal strip in a continuously operated strip system.
  • stitching machines are used to maintain the continuous belt movement and connect the new metal belt to the outgoing metal belt in the infeed area of the belt system.
  • different types of connection can be used, such as clinching, gluing, welding or punching. Specialists are often familiar with corresponding stitching machines from the state of the art.
  • punched connections also known as stitching.
  • Such stapling machines have a single stapling tool built into the stapling machine in a single or double row design.
  • stitching can generally be used for metal strips up to a thickness of 6 mm.
  • the stapling tools have technologically unsuitable parameters, since they are typically designed for the minimum metal strip thicknesses to be stapled.
  • the present invention is therefore based on the object of providing a stitching machine of the type described at the outset, which can be used for a larger range of thicknesses and/or strengths without having the disadvantages known from the prior art. Furthermore, the object of the present invention is to provide an improved method for connecting an end section of an outgoing metal strip to a start section of an incoming metal strip in a continuously operated strip system.
  • the object is achieved by a stapling machine having the features of claim 1 and a method having the features of claim 6.
  • a stitching machine for a continuously operated strip system for connecting the end section of an outgoing metal strip to the beginning section of an incoming metal strip, which has a first punching tool and a second punching tool.
  • the first punching tool is designed to connect the metal strips to one another when their thicknesses are in a first thickness range and/or their strengths are in a first strength range.
  • the second punching tool is designed to connect the metal strips to one another when their thicknesses are in a second thickness range and/or their strengths are in a second strength range, wherein both thickness ranges and/or strength ranges differ from one another.
  • the first thickness range is 0.2 to 2.5 mm and the second thickness range is 2.0 to 3.5 mm.
  • the first strength range is 20 MPa to 250 MPa for aluminum or an alloy thereof, and 100 MPa to 350 MPa for steel and the second strength range is 200 MPa to 600 MPa for aluminum or an alloy thereof, and 300 MPa to 1000 MPa for steel.
  • metal strips with a first thickness range and/or a first strength range are connected to one another with a first punching tool and metal strips with a second thickness range and/or a second strength range are connected to one another with a second punching tool, wherein both thickness ranges and/or strength ranges differ from one another.
  • the two different punching tools mean that the right punching tool can be selected and used to meet the connection requirements, depending on the thickness of the strip to be stapled and/or the strength of the metal strips to be joined. This not only has a positive effect on the quality of the cutting edges, but also protects the punching tool used.
  • stitching is used as the type of connection.
  • Stitching is a specific punching process in which a positive connection between the two metal strips is created by creating a punching geometry and subsequent stretching.
  • the connection by means of stitching seams can advantageously be carried out in one row or, more preferably, in two rows.
  • the metal strips to be joined together are aluminium strips or steel strips.
  • the first punching tool has a first punching pattern and the second punching tool has a second punching pattern, whereby both punching patterns differ from one another.
  • the punching patterns are different punching geometries that are punched into the corresponding metal strip, for example aluminum or steel, using the punch and the die. Due to the different punching patterns that the two punching tools have, the punching tools can be optimally designed for the respective metal strips, so that the stapling machine according to the invention can be used for a larger range of materials.
  • the first punching tool has a first cutting gap and the second punching tool has a second cutting gap that differs from the first cutting gap.
  • This also has a beneficial effect on the usability of the stapling machine, since the punching tools can thus be optimally designed specifically for the range of materials to be stapled.
  • the stapling machine according to the invention is designed in such a way that the tool change between the first and the second punching tool is fully automatic. This makes it possible to carry out the tool change while the belt is running. It is therefore not necessary to stop the entire belt process line of the belt system.
  • both punching tools are arranged in a punching tool cassette.
  • the punching tool cassette can preferably be moved within the stapling machine using a displacement device.
  • the stapling machine has, for example, a motor and a rack that interacts with the punching tool cassette and allows the tool to be changed quickly.
  • the punching tool cassette is arranged in the stapling machine in such a way that one punching tool is arranged in a punching position and the other in a parking position.
  • the punching tool in the punching position is exchanged for the other stored punching tool by the shifting device of the stapling machine shifting the punching tool cassette accordingly.
  • the punching tool stored in the parking position is advantageously protected from damage by means of wear plates.
  • the arrangement of the punching tools in a punching tool cassette thus enables improved and faster tool changes, so that the effort for the entire tool change process is reduced.
  • the tool change preferably takes place while the belt is running between two stitch seams.
  • the tool change can take place while the belt is at a standstill.
  • each of the punching tools is designed with a blow-off by means of compressed air and/or a tool lubrication.
  • a further aspect of the present invention also relates to a belt system comprising the stapling machine according to the invention.
  • FIG. 1 a stitching machine 1 for connecting the end section of an outgoing metal strip with the beginning section of an incoming metal strip for a continuously operated strip system is shown, as typically used in metal strip treatment or metal strip finishing plants. In the present illustration, the metal strips are not shown, only the strip path B is indicated.
  • the stapling machine 1 comprises a first punching tool 20, which is designed to connect metal strips whose thicknesses lie in a first thickness range, preferably in the range of 0.2 to 2.5 mm, to one another, and a second punching tool 30, which is designed to connect metal strips whose thicknesses lie in a second thickness range, preferably 2 to 3.5 mm, to one another, wherein both thickness ranges differ from one another.
  • the two punching tools 20, 30 are arranged in a punching tool cassette 80, which can be moved within the stapling machine 1 by means of a displacement device 60, so that the first punching tool 20 can be arranged in a punching position 50 and the second punching tool 30 in a parking position 70 within the stapling machine 1.
  • the stapling machine 1 has a motor (not shown) and a rack 10, which interacts with the punching tool cassette 80 and allows for rapid tool changes.
  • each of the punching tools 20, 30 has a corresponding punch and a die (not shown).
  • the punch and die of the first punching tool 20 differ from the second punching tool 30, ie the first punching tool 20 has a first punching pattern and the second punching tool has a second punching pattern.
  • the punches and dies of the respective punching tools 20, 30 also have different cutting gaps.
  • the respective punching tool 20, 30 located in the punching position 50 is operated hydraulically in the embodiment of the stapling machine 1 shown here.
  • the stapling machine 1 comprises a hydraulic unit 40, which is arranged in the lower part of the stapling machine 1.
  • the first punching tool 20 is arranged in the punching position 50 within the stapling machine 1.
  • the second punching tool 30 is accordingly arranged on the tape inlet side and outside the stapling machine 1 in the punching tool cassette 80 in a storage position and is protected from possible damage by means of a wear plate 51.
  • the displacement device 60 is provided for a tool change between the first and second punching tools 20, 30, which allows a fully automatic tool change.
  • the tool change can preferably be carried out during belt operation between two stitch seams or when the belt is at a standstill.
  • the first punching tool 20 is moved out of the punching position 50 and into the storage position.
  • the punching tool cassette 80 is moved by means of the displacement device 60 until the first punching tool 20 is arranged on the belt outlet side, while the second punching tool 30 reaches the punching position 50.
  • a wear plate 71 is also provided on the belt outlet side, which protects the first punching tool 20 from possible damage.
  • the first punching tool 20 is designed to connect the metal strips to one another when their strengths are in a first strength range, wherein the second punching tool 30 is then designed to connect the metal strips to one another when their strengths lie in a second strength range, with the two strength ranges being different from each other.
  • the first strength range can be 20 MPa to 250 MPa and the second strength range 200 MPa to 600 MPa.
  • the first strength range can be 100 MPa to 350 MPa and the second strength range 300 MPa to 1000 MPa.
  • FIG 2 a variant of the punching tool cassette 80 is shown.
  • This comprises a cover plate 81 to which several T-bars 82 are attached.
  • the punching tool cassette 80 is held in the stapler 1 by means of the T-bars 82 and is guided via the rack 10 ( Fig. 1 ) are moved.
  • the punching tool cassette 80 is moved to the correct end position via stop elements 83 arranged on the cover plate 81, which is checked by a limit switch (not shown).
  • the two punching tools 20, 30 are attached below the cover plate 81.
  • each of the punching tools 20, 30 comprises several runners 84, which, for example, move when the punching tool cassette 80 is moved into a lifting slab 11 ( Fig. 1 ). If the lower tool part of the respective punching tool 20, 30 does not follow the lowering of the lifting slab 11 due to gravity after a stapling process, the lower tool part is pulled back into the lower end position by the lifting slab 11 through this connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Punching Or Piercing (AREA)

Claims (8)

  1. Agrafeuse (1) pour relier une extrémité arrière d'une bande métallique sortante avec une extrémité avant d'une bande métallique entrante pour une installation de bande fonctionnant en continu, comprenant :
    - un premier outil de poinçonnage (20), conçu pour relier les bandes métalliques lorsque leurs épaisseurs se situent dans une première plage d'épaisseurs et/ou lorsque leurs résistances se situent dans une première plage de résistances, et
    - un deuxième outil de poinçonnage (30), conçu pour relier les bandes métalliques lorsque leurs épaisseurs se situent dans une deuxième plage d'épaisseurs et/ou leurs résistances se situent dans une deuxième plage de résistances, les deux plages d'épaisseurs et/ou de résistances étant différentes,
    les deux outils de poinçonnage (20, 30) étant disposés dans une cassette d'outils de poinçonnage (80), et la cassette d'outils de poinçonnage (80) étant déplaçable au moyen d'un dispositif de déplacement (60) à l'intérieur de l'agrafeuse (1), de sorte que le premier outil de poinçonnage (20) puisse être placé dans une position de poinçonnage (50) et le deuxième outil de poinçonnage (30) dans une position de stationnement (70) en dehors de l'agrafeuse (1), ou inversement,
    caractérisé en ce que
    le type de liaison utilisé est le stitching, et
    le premier outil de poinçonnage (20) présente un premier écart de coupe et le deuxième outil de poinçonnage (30) présente un deuxième écart de coupe, différent du premier.
  2. Agrafeuse (1) selon la revendication 1, où la première plage d'épaisseurs est de 0,2 à 2,5 mm et la deuxième plage d'épaisseurs est de 2,0 à 3,5 mm.
  3. Agrafeuse (1) selon la revendication 1 ou 2, où la première plage de résistances est de 20 MPa à 250 MPa pour l'aluminium et de 100 MPa à 350 MPa pour l'acier, et la deuxième plage de résistances est de 200 MPa à 600 MPa pour l'aluminium et de 300 MPa à 1000 MPa pour l'acier.
  4. Agrafeuse (1) selon l'une des revendications précédentes, où le premier outil de poinçonnage (20) présente un premier motif de poinçonnage et le deuxième outil de poinçonnage (30) présente un deuxième motif de poinçonnage, les deux motifs de poinçonnage étant différents.
  5. Installation de bande comprenant une agrafeuse (1) selon l'une des revendications 1 à 4.
  6. Procédé pour relier une extrémité arrière d'une bande métallique sortante avec une extrémité avant d'une bande métallique entrante dans une installation de bande fonctionnant en continu, où
    - les bandes métalliques, lorsque leurs épaisseurs se situent dans une première plage d'épaisseurs et/ou leurs résistances se situent dans une première plage de résistances, sont reliées avec un premier outil de poinçonnage (20), et
    - les bandes métalliques, lorsque leurs épaisseurs se situent dans une deuxième plage d'épaisseurs et/ou leurs résistances se situent dans une deuxième plage de résistances, sont reliées avec un deuxième outil de poinçonnage (30), les deux plages d'épaisseurs et/ou de résistances étant différentes, et les deux outils de poinçonnage (20, 30) étant disposés dans une cassette d'outils de poinçonnage (80), qui est déplaçable à l'intérieur de l'agrafeuse (1), caractérisé en ce que
    le type de liaison utilisé est le stitching et le changement d'outil entre le premier outil de poinçonnage (20) et le deuxième outil de poinçonnage (30) s'effectue de manière entièrement automatique, le premier outil de poinçonnage (20) présentant un premier écart de coupe et le deuxième outil de poinçonnage (30) présentant un deuxième écart de coupe, différent du premier.
  7. Procédé selon la revendication 6, où le changement d'outil s'effectue en cours de fonctionnement de la bande entre deux coutures de stitching.
  8. Procédé selon l'une des revendications 6 ou 7, où la liaison par coutures de stitching s'effectue en une seule rangée ou de préférence en deux rangées.
EP21700736.8A 2020-01-16 2021-01-14 Agrafeuse pour métal Active EP4090480B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020200510.9A DE102020200510A1 (de) 2020-01-16 2020-01-16 Heftmaschine
PCT/EP2021/050747 WO2021144394A1 (fr) 2020-01-16 2021-01-14 Agrafeuse

Publications (3)

Publication Number Publication Date
EP4090480A1 EP4090480A1 (fr) 2022-11-23
EP4090480C0 EP4090480C0 (fr) 2024-11-20
EP4090480B1 true EP4090480B1 (fr) 2024-11-20

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ID=74187297

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Application Number Title Priority Date Filing Date
EP21700736.8A Active EP4090480B1 (fr) 2020-01-16 2021-01-14 Agrafeuse pour métal

Country Status (5)

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US (1) US11931791B2 (fr)
EP (1) EP4090480B1 (fr)
CN (1) CN114945433B (fr)
DE (1) DE102020200510A1 (fr)
WO (1) WO2021144394A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114151A (en) * 1961-05-25 1963-12-17 Production Machinery Corp Strip stitcher
EP0927600B1 (fr) * 1997-12-26 2005-04-06 Murata Kikai Kabushiki Kaisha Presse

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE668721C (de) 1933-11-18 1938-12-09 Fritz Grah Dipl Ing Maschine zum Aneinanderheften von Blechen, Metallbaendern o. dgl.
DE1123879B (de) * 1960-01-05 1962-02-15 Thyssen Huette Ag Verfahren und Anlage zur kontinuierlichen Entzunderung von Breitband in einer Durchlaufbeizanlage
DE1962129A1 (de) 1969-12-11 1971-06-24 Secor Ab Vorrichtung zum Verbinden von Metallblechbaendern
US3670398A (en) 1970-02-13 1972-06-20 Carl H Minton Method and apparatus for joining strip ends employing a stitcher assembly
IT1124987B (it) 1979-11-16 1986-05-14 Giovanni Giasini Ppocedimento e macchina per l'esecuzione delle giunzioni testa-coda di nastri metallici di spessore sottile
EP0648556B1 (fr) * 1990-05-01 1997-08-27 Amada Company Limited Dispositif de changement de matrice
EP1504896B1 (fr) * 2001-12-25 2008-12-10 Institute of Technology Precision Electrical Discharge Work's Procede et systeme de production de lamines
JP5474889B2 (ja) * 2011-08-09 2014-04-16 中外炉工業株式会社 ストリップ材接続装置
DE102012108161B4 (de) * 2012-09-03 2016-09-22 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren und Vorrichtung zum Verbinden von Metallbändern
EP2948259A1 (fr) * 2013-01-22 2015-12-02 ANDRITZ Sundwig GmbH Dispositif permettant de relier des produits plats métalliques entrant successivement dans une installation de traitement de bandes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114151A (en) * 1961-05-25 1963-12-17 Production Machinery Corp Strip stitcher
EP0927600B1 (fr) * 1997-12-26 2005-04-06 Murata Kikai Kabushiki Kaisha Presse

Also Published As

Publication number Publication date
CN114945433B (zh) 2025-05-13
EP4090480C0 (fr) 2024-11-20
US20230064480A1 (en) 2023-03-02
WO2021144394A1 (fr) 2021-07-22
CN114945433A (zh) 2022-08-26
EP4090480A1 (fr) 2022-11-23
US11931791B2 (en) 2024-03-19
DE102020200510A1 (de) 2021-07-22

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