EP0175886B1 - Method and arrangement for welding together the ends of rolled strips of finite lengths to form a strip of an infinite length during further processing of the strip - Google Patents

Method and arrangement for welding together the ends of rolled strips of finite lengths to form a strip of an infinite length during further processing of the strip Download PDF

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Publication number
EP0175886B1
EP0175886B1 EP85109708A EP85109708A EP0175886B1 EP 0175886 B1 EP0175886 B1 EP 0175886B1 EP 85109708 A EP85109708 A EP 85109708A EP 85109708 A EP85109708 A EP 85109708A EP 0175886 B1 EP0175886 B1 EP 0175886B1
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EP
European Patent Office
Prior art keywords
strip
coil
clamping
welding
drive
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
EP85109708A
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German (de)
French (fr)
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EP0175886A1 (en
Inventor
Klaus Angerer
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.)
Siemens AG
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Siemens AG
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Application filed by Siemens AG filed Critical Siemens AG
Priority to AT85109708T priority Critical patent/ATE48098T1/en
Publication of EP0175886A1 publication Critical patent/EP0175886A1/en
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Publication of EP0175886B1 publication Critical patent/EP0175886B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, 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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C49/00—Devices for temporarily accumulating material

Definitions

  • the invention relates to a method according to the preamble of claim 1 and an arrangement for carrying out the method according to the preamble of claim 6.
  • Such a method and a device for carrying it out is known from DE-C-2934115.
  • the moving strip material is then temporarily brought into the form of a strip roll and stored, and then removed again from the wound state for continuous further processing or treatment, the strip lengths to be welded being recorded in their end and beginning areas and then jointly from opposite sides can be wound in two layers on a reel in the same direction.
  • the drum-shaped reel consists of two halves, which contain the welding device, so that the welding process can be carried out while the drum is rotating.
  • This method has compared to the previously practiced methods, in which the moving strip material had to be temporarily stored in the form of a strip wrap in one layer on a large drum, but which also required a so-called inlet twist section and an outlet twist section of relatively great length were the advantage that its space requirement is significantly less.
  • this method does not require a single drum. Rather, a continuous process over a longer period of time requires a number of drums changing in their positions and also also requires a buffer section for accommodating the strip material which arises when the drums are regrouped.
  • the object of the invention is to further reduce the technical and spatial outlay required for the above-described method.
  • the advantage achieved thereby consists primarily in the fact that the relatively complicated two-part drum construction and the relatively complex regrouping of such drums can be dispensed with, as can an additional band buffer.
  • An arrangement for carrying out the method according to the invention is characterized in claim 6.
  • This arrangement has the advantage that, because of the relatively large drum diameter of the single storage drum, the welding device is not spatially restricted and is relatively easily accessible. For the rest, the arrangement is constructed so that it manages with simple, appropriately controlled rotary drives that are unchanged in their mutual position. In particular, the omission of the regrouping drives results in a considerable simplification of the technical outlay and thus also the susceptibility to malfunction of such a system.
  • a laser welding device as a welding device, such as is described in EP-A-0101 016.
  • a so-called film seam welding device described in DE-C-3011144 is proposed as a further advantageous welding device.
  • Fig. 1 The arrangement described in Fig. 1 has a disc-shaped, mounted in its central axis mounting plate 1.
  • a number of rollers 2 are rotatably mounted about horizontal axes, the axes of which are parallel to the axis of rotation of the mounting plate 1 and which at one end the mounting plate 1 and at its other end on a mounting ring 3 (Fig. 2) are mounted radially.
  • hydraulic cylinders 4 are assigned to each roller axis on both bearing sides, which enable an individual radial displacement for each roller within corresponding recesses 5 in the mounting plate 1 and the mounting ring 3.
  • a reel dome 11 driven by a further electric motor 10 is arranged, the axis of rotation of which coincides with the central axis of the drive shaft 6 of the roller ring.
  • the reel dome 11 with the reel drive motor 10 can be hydraulically extended from the center of rotation with means (not shown) for taking up and introducing new supply coils.
  • the welding device 12 is arranged in the space between the reel dome 11 and the rollers 2 of the roller ring 9, the welding device 12 is arranged.
  • This consists of a support 13, which can be moved by spindles 14 in the direction of the central axis of the drive shaft 11 by a support drive 15.
  • the spindles 14 are rotatably mounted below the rollers 2 on the mounting plate 1 and the mounting ring 3.
  • the support 13 works in conjunction with a clamping device 16, which is described in more detail in FIG. 5.
  • the support 13 includes a pivotable planer 68 and the last deflecting mirror 18 of a laser welding arrangement, the energy beam generator 19 of which is located outside the arrangement and the beam 20 of which passes through the drive shaft 6 designed as a hollow shaft, via a first deflecting mirror 21 in the direction of the welding device 12 and through one second deflecting mirror 22 in the direction of the support 13 and from there is finally directed by the last deflecting mirror 18 onto the weld.
  • All of the control functions to be coordinated for the control of the process sequence, both for the commissioning and for the control of the drive units and the sensors, are carried out via control modules by a control computer 24 in accordance with the control program input to it.
  • the drive motor 25 for the roller ring 9, via the control line 26, the drive motor 27 for the reel mandrel 11 of the supply coil 23 via the control line 28, the support drive 15 via the control line 29, the two proximity switches 30, 31 for the support drive via the control lines 32, 33, the motor 34 for the feed drive roller 35 via the control line 36, the drive motor 37 for the exit driver roller 38 via the control line 39, the energy beam generator 19 via the control lines 39, the electrohydraulic converter 8 via the control line 40 and the Electrohydraulic energy converters 42 are connected via the control line 41 to control modules 43 to 52 connected to a central control computer 24. This is connected via a further control line 53 to the central computer (not shown) of the processing system.
  • a supply coil 23 is first introduced into the center of the roller ring 9 with the aid of the reel dome 11, so that it assumes the position shown schematically in FIG. 2. Then the reel drive motor 10 is put into operation until the beginning of the supply coil passes through the funnel-shaped guide plates 54, 55 between the feed drive roller 35 and the feed pressure roller 56. Then the reel drive motor is switched off and the hydraulic cylinder 57 of the feed pressure roller 56 is put into operation, so that the beginning of the supply coil is clamped between the feed driver roller 35 and the feed pressure roller 56.
  • the drive motor 34 of the feed drive roller 35 is switched on, so that the belt between the open feed jaws 58 and the also open output jaws 59 passes between the output drive roller 38 and the output pressure roller 60.
  • the hydraulic cylinder 61 of the exit pressure roller 60 is actuated, the hydraulic cylinder 57 of the feed pressure roller 56 is released and the drive motor 37 of the exit driving roller 38 is switched on, so that the belt - possibly via further guide means, not shown - between two rollers of the roller ring got outside.
  • the outgoing strip start is fed by a gripper (not shown) to the still stationary processing system (also not shown).
  • the roller ring is put into a rotational movement in the same direction as the winding direction of the supply coil 23 and opposite to the direction of movement of the strip by starting up its drive motor 25, so that the strip is wound on the outside of the supply coil 23 onto the roller ring and forms a storage coil 62 there.
  • the hydraulic cylinders 4 of each roll are actuated via the hydraulic-electrical converter 8 in such a way that the respective roll moves in the direction of the pivot point Layer by layer can yield so much that the individual layers are wound against each other against a desired pressure.
  • the drive motor 25 remains switched on in this direction of rotation until the tape is almost unwound from the supply coil 23 and reaches the feed drive roller 35.
  • the energy beam generator 19 of the laser welding device is switched on and at the same time the support drive 15 is moved in the opposite direction of rotation, so that the laser beam is guided over the sheet metal edges with the aid of the deflecting mirrors 21, 22 and 18 and a focusing device (not shown) and welded.
  • the support drive 15 and the energy beam generator 19 are switched off by a corresponding pulse from the proximity switch 31, the support drive 15 is switched on again in the opposite direction of rotation and the planing tool 68 is pivoted back into its working position.
  • the notching tool 68 is adjusted by means not shown so that it now planes the weld seam.
  • the proximity switch 30 again interrupts the support drive 15.
  • the hydraulic cylinders 64, 65, 66, 67 are relieved, so that the clamping jaws 58, 59 open.
  • the drive motor 37 of the exit drive roller 38 is switched on and the direction of rotation of the drive motor 25 of the roller ring is reversed, so that the roller ring rotates clockwise again and the tape located on the supply coil is in turn wound onto the roller cage via the roller 62 as a storage coil. This process continues until the end of the strip has left the supply coil and has reached the feed drive roller 35. Then the process already described is repeated.
  • the dimensions of the system and the speeds are chosen so that the storage coil is completely unwound after the completion of each processing operation.
  • the principle of the method is therefore to transfer the contents of a storage coil with a small diameter, during the processing process to a storage coil of considerably larger diameter concentrically surrounding the storage coil, to weld both coils while the storage coil is running and to insert a new storage coil.
  • a sufficiently large annular space between the two coils for accommodating the clamping and welding device, and on the other hand there is sufficient time for the welding process to be carried out.
  • FIGS. 1 and 2 can be modified in such a way that the supply coil 23 is not wound around the outside of the roller ring, but rather against the inside. This makes it possible to arrange the roller ring fixed.
  • the supply coil 23 is unwound and the tape is applied with the aid of the clamping and welding device which executes a rotational movement about the central axis of the roller ring.
  • the basic structure of this arrangement can be seen from FIGS. 3 and 4.
  • the rollers 2 are in turn rotatable about their central axis on the one hand on a mounting plate 74 and on the other hand on a mounting ring 75, both of which are firmly anchored.
  • the deflecting mirrors 21 and 22 are arranged in the edges of these beam channels and direct the energy beam onto the deflecting mirror 18, which guides it in the direction of the weld seam.
  • the motor 25 for the angle arm of the clamping and welding device 12, 16 is put into operation and now moves it clockwise around the central axis of the arrangement, so that the storage coil is unwound. Meanwhile, a new supply coil is retracted and the motor 10 is switched on, so that the supply coil also rotates clockwise at such an angular speed that the beginning of the band through the funnel-shaped sliding plates 54, 55 into the clamping and welding device rotating in the same direction in that described Way can be threaded. The welding device is then actuated in the manner described, so that the strip edges are welded.
  • the motor 25 is stopped and put into operation again in the opposite direction of rotation (counterclockwise), so that with the help of the exit driver roller 38 with the pressure roller 60 the supply coil is unwound and the storage coil is in turn wound against the inside of the roller ring. This process is repeated accordingly, so that continuous operation is ensured.
  • some of the rollers 2 of the roller ring (9) can be arranged to be radially movable either against spring pressure or by corresponding positive adjustment.
  • the formation of the storage coil 62 takes place either by winding the tape stored on the supply coil 23 onto the outer circumference of the rotatable roller ring 9 (FIG. 1) or by applying the tape to the inside of the fixed roller ring 9 (FIG. 3 ).
  • these arrangements can be used with the corresponding methods. If these material properties are not available, these methods described above can lead to difficulties insofar as the band contracts to form a polygon on the roller ring 9 in the arrangement according to FIG. 1 or the first layer of the supply coil does not overlap the arrangement according to FIG creates the entire circumference on the rollers 2 of the roller ring 9.
  • FIG. 7 a so-called form-forming roller cage (FIG. 7), in which rollers 79 which have the same width as the rollers 2 around them, so are arranged so that the storage coil 62 is guided and shaped between the roller rings formed by the rollers 2 and the rollers 79.
  • the rollers 2 of the roller ring 9 are in turn radially displaceable, so that the space available between the two roller rings mentioned above can be adapted to the winding diameter of the storage coil.
  • FIG. 7 form-forming roller cage
  • auxiliary drum 80 which is fixedly connected to the clamping and welding device 12, 16 and is rotatably mounted concentrically to the idler ring 9, the cylinder of which surrounds the space for the supply coil and the clamping and welding device, the width of which is that of the Carrier roller ring 9 corresponds and whose diameter is smaller by the thickness of the auxiliary coil 92 than the smallest inner diameter of the roller ring of the supporting roller drum and which has a slot for the passage of the rolled strip at the level of the exit driving roller 38 of the clamping device 16.
  • the cross section of the arrangement shown in FIG. 10 shows the drive mechanism of the concentrically arranged functional elements.
  • the motor 10 drives the coiler mandrel 11, which is mounted on one side in the front bearing 82 and in the rear bearing 83, via a multiple spline shaft 81.
  • the auxiliary drum 80 which is mounted concentrically to the reel dome 11 via a bearing bush 84, is driven concentrically to the reel dome by a motor 85 via a pinion-ring gear transmission 86.
  • the roller ring 9 of the support rollers 2 is fastened to a support ring 91 which is concentrically rotatably mounted on the bearing bush 84 of the auxiliary drum 80. This support ring is driven by a motor 87 via a pinion gear transmission 88.
  • a positioning disk 89 is fastened thereon, which can be displaced in the axial direction by such a stroke by hydraulic cylinders 90 that center deviations of the strip running off the supply coil can be corrected.
  • the support rollers 2 are moved radially in the direction of the axis of rotation by means not shown by such amounts that the storage coil can build up inwards (FIG. 8).
  • the aforementioned drive motors are stopped and the reel mandrel 11 is fed a new supply coil.
  • the welding process begins with the auxiliary drum 80 stationary.
  • the further processing system and the drive motor 87 for the roller ring 9 are put into operation in the opposite direction of rotation.
  • FIGS. 7 to 10 Another advantage of the arrangement shown in FIGS. 7 to 10 is that the welding process can be carried out even when the welding device is at a standstill.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Metal Rolling (AREA)
  • Laser Beam Processing (AREA)

Abstract

The average winding diameter of a finite roller band length wound on a supply coil is increased by having the roller band rewound from the supply coil to a storage coil of a larger than the winding diameter, which encloses the supply coil concentrically. During the uncoiling of the band stored on the storage coil for purposes of a continuous manufacturing operation, a welding device is arranged in the annular area between the external diameter of the supply coil and the internal diameter of the storage coil and welds the band trailing end of the storage coil together with the band and leading end of the supply coil. The contents of the supply coil are then taken over by the storage coil, and while this material is uncoiled, a further supply coil is inserted and its leading edge welded to the end of the storage coil.

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Anspruchs 1 und eine Anordnung zur Durchführung des Verfahrens nach dem Oberbegriff des Anspruchs 6.The invention relates to a method according to the preamble of claim 1 and an arrangement for carrying out the method according to the preamble of claim 6.

Um das Weiterbearbeiten oder -behandeln von in endlichen Längen zu sogenannten Coils gewickelten Metallbändern unterbrechungsfrei durchführen zu können, ist es notwendig, diese endlichen Bandlängen miteinander zu verschweißen, ohne dabei den kontinuierlich ablaufenden Weiterverarbeitungsprozeß zu unterbrechen. Um dies zu erreichen, ist es notwendig, das sich kontinuierlich bewegende Bandmaterial in einer solchen Länge abzuspeichem, daß die Verarbeitungsanlage während des Schweißvorganges aus dem Speicher kontinuierlich weiterbedient werden kann.In order to be able to carry out the further processing or treatment of metal strips wound into finite lengths into so-called coils without interruption, it is necessary to weld these finite strip lengths to one another without interrupting the continuously running further processing process. In order to achieve this, it is necessary to store the continuously moving strip material in such a length that the processing system can be operated continuously from the memory during the welding process.

Ein solches Verfahren und eine Vorrichtung zu dessen Durchführung ist aus der DE-C-2934115 bekannt. Danach wird das sich bewegende Bandmaterial zeitweise in die Form eines Bandwickels gebracht und gespeichert, sowie anschließend wieder aus dem Wickelzustand zur kontinuierlichen Weiterverarbeitung oder -behandlung abgezogen, wobei die jeweils zu verschweißenden Bandlängen in ihrem End- und Anfangsbereich erfaßt und dann von entgegengesetzten Seiten her gemeinsam im gleichen Drehsinn doppellagig auf einen Bandhaspel aufgewickelt werden. Die trommelförmigen Bandhaspel bestehen dabei aus zwei Hälften, welche die Schweißvorrichtung enthalten, so daß der Schweißvorgang während der Trommeldrehung durchgeführt werden kann. Dieses Verfahren hat gegenüber den vorher praktizierten Verfahren, bei denen das sich bewegende Bandmaterial zeitweise in Form eines Bandwickels einlagig auf einer großen Trommel gespeichert werden mußte, bei dem aber zusätzlich noch jeweils eine sogenannte Einlauf-Twiststrecke und eine Auslauf-Twiststrecke von relativ großer Länge benötigt wurden, den Vorteil, daß sein Raumbedarf erheblich geringer ist. Allerdings kommt man bei diesem Verfahren nicht mit einer einzigen Trommel aus. Ein kontinuierlicher Ablauf über längere Zeit erfordert vielmehr eine Anzahl von in ihren Positionen wechselnden Trommeln und benötigt außerdem auch noch eine Pufferstrecke für die Aufnahme des beim Umgruppieren der Trommeln anfallenden Bandmaterials.Such a method and a device for carrying it out is known from DE-C-2934115. The moving strip material is then temporarily brought into the form of a strip roll and stored, and then removed again from the wound state for continuous further processing or treatment, the strip lengths to be welded being recorded in their end and beginning areas and then jointly from opposite sides can be wound in two layers on a reel in the same direction. The drum-shaped reel consists of two halves, which contain the welding device, so that the welding process can be carried out while the drum is rotating. This method has compared to the previously practiced methods, in which the moving strip material had to be temporarily stored in the form of a strip wrap in one layer on a large drum, but which also required a so-called inlet twist section and an outlet twist section of relatively great length were the advantage that its space requirement is significantly less. However, this method does not require a single drum. Rather, a continuous process over a longer period of time requires a number of drums changing in their positions and also also requires a buffer section for accommodating the strip material which arises when the drums are regrouped.

Der Erfindung liegt die Aufgabe zugrunde, den für das vorbeschriebene Verfahren erforderlichen technischen und räumlichen Aufwand weiter zu verringern.The object of the invention is to further reduce the technical and spatial outlay required for the above-described method.

Diese Aufgabe ist in verfahrenstechnischer Hinsicht durch die im Patentanspruch 1 angegebene Erfindung gelöst.In terms of process engineering, this object is achieved by the invention specified in patent claim 1.

Der dadurch erzielte Vorteil besteht vor allem darin, daß auf die relativ komplizierte zweiteilige Trommelkonstruktion sowie auf das relativ aufwendige Umgruppieren solcher Trommeln ebenso verzichtet werden kann, wie auf einen zusätzlichen Bandpuffer.The advantage achieved thereby consists primarily in the fact that the relatively complicated two-part drum construction and the relatively complex regrouping of such drums can be dispensed with, as can an additional band buffer.

Eine Anordnung zur Durchführung des erfindungsgemäßen Verfahrens ist im Patentanspruch 6 gekennzeichnet. Bei dieser Anordnung ergibt sich der Vorteil, daß wegen des relativ großen Trommeldurchmessers der einzigen Speichertrommel die Schweißvorrichtung räumlich nicht eingeengt und relativ gut zugänglich ist. Im übrigen ist die Anordnung so aufgebaut, daß sie mit einfachen, entsprechend gesteuerten und in ihrer gegenseitigen Lage unveränderten Drehantrieben auskommt. Insbesondere der Wegfall der Umgruppierungsantriebe bewirkt eine erhebliche Vereinfachung des technischen Aufwandes und damit auch der Störanfälligkeit einer solchen Anlage.An arrangement for carrying out the method according to the invention is characterized in claim 6. This arrangement has the advantage that, because of the relatively large drum diameter of the single storage drum, the welding device is not spatially restricted and is relatively easily accessible. For the rest, the arrangement is constructed so that it manages with simple, appropriately controlled rotary drives that are unchanged in their mutual position. In particular, the omission of the regrouping drives results in a considerable simplification of the technical outlay and thus also the susceptibility to malfunction of such a system.

Nach einem Weiterbildungsmerkmal der Erfindung gemäß Patentanspruch 10 wird vorgeschlagen, als Schweißgerät eine Laserschweißeinrichtung zu benutzen, wie sie etwa in der EP-A-0101 016 beschrieben ist.According to a further development feature of the invention according to claim 10, it is proposed to use a laser welding device as a welding device, such as is described in EP-A-0101 016.

Als ein weiteres vorteilhaftes Schweißgerät wird nach Patentanspruch 11 eine in der DE-C-3011144 beschriebene sogenannte Foliennahtschweißeinrichtung vorgeschlagen.According to claim 11, a so-called film seam welding device described in DE-C-3011144 is proposed as a further advantageous welding device.

Diese Schweißeinrichtungen haben den Vorteil, daß es mit ihnen auf besonders einfache Weise möglich ist, die Schweißenergie praktisch verlustfrei an die Schweißnaht zu bringen und gleichzeitig eine so saubere Schweißnaht zu produzieren, daß sich das Nacharbeiten entweder ganz vermeiden oder auf einen einzigen Arbeitsgang reduzieren läßt.These welding devices have the advantage that it is possible with them in a particularly simple manner to bring the welding energy to the weld seam practically without loss and at the same time to produce such a clean weld seam that the reworking can either be avoided entirely or reduced to a single operation.

Es ist im übrigen mit der vorgeschlagenen Anordnung auch möglich, die Schweißvorrichtung in einem Winkel zur Zentralachse anzuordnen, so daß die Schweißnaht etwas schräg zur Transportrichtung des Bandes verläuft. Dies kann je nach Weiterverarbeitungsverfahren von Fall zu Fall vorteilhaft sein.It is also possible with the proposed arrangement to arrange the welding device at an angle to the central axis, so that the weld seam is somewhat oblique to the direction of transport of the strip. Depending on the processing method, this can be advantageous on a case-by-case basis.

Ausführungsbeispiele der Erfindung werden anhand von Zeichnungen in folgenden näher erläutert. Es zeigen :

  • Fig. 1 eine Anordnung mit umlaufendem Rollenkränz für den Speichercoil und daran befestigter Schweißvorrichtung in Vorderansicht ;
  • Fig. 2 einen Querschnitt durch die Anordnung nach Fig. 1 in der Ebene der Zentralachse ;
  • Fig. 3 eine Anordnung mit feststehendem Rollenkranz und um die Zentralachse drehbarer Schweißvorrichtung in Vorderansicht;
  • Fig. 4 einen Querschnitt durch die Anordnung nach Fig. 3 in der Zentralachsebene ;
  • Fig. 5 eine Vorderansicht der Klemm- und Schweißvorrichtung ;
  • Fig. 6 eine schematische Darstellung der elektronischen Steuervorrichtung für die Anordnungen nach den Figuren 1 und 3 ;
  • Fig. 7 eine Anordnung mit umlaufendem Rollenkranz, einem außen um diesen herum konzentrisch angeordneten feststehenden Formbildungs-Rollenkranz, eine innen konzentrisch drehbar angeordnete Hilfstrommel mit daran befestigter Schweiß-und Klemmvorrichtung ;
  • Fig. 8 die Anordnung nach Fig. 7 mit fertig gewickeltem Vorratscoil ;
  • Fig. 9 die Anordnung nach Fig. 7 mit fertig gewickeltem Hilfscoil und
  • Fig. 10 einen Querschnitt durch die Anordnung nach Fig. 7.
Embodiments of the invention are explained in more detail with reference to drawings in the following. Show it :
  • Figure 1 shows an arrangement with a rotating roller ring for the storage coil and welding device attached to it in a front view.
  • FIG. 2 shows a cross section through the arrangement according to FIG. 1 in the plane of the central axis;
  • 3 shows an arrangement with a fixed roller ring and welding device rotatable about the central axis in a front view;
  • 4 shows a cross section through the arrangement according to FIG. 3 in the central axis plane;
  • Fig. 5 is a front view of the clamping and welding device;
  • 6 shows a schematic illustration of the electronic control device for the arrangements according to FIGS. 1 and 3;
  • Fig. 7 shows an arrangement with circumferential roller ring, a fixed form-forming roller ring arranged concentrically around the outside, one rotating concentrically on the inside bar arranged auxiliary drum with welding and clamping device attached to it;
  • 8 shows the arrangement according to FIG. 7 with the supply coil completely wound;
  • Fig. 9 shows the arrangement of FIG. 7 with the auxiliary coil completely wound and
  • 10 shows a cross section through the arrangement according to FIG. 7.

Die in Fig. 1 beschriebene Anordnung besitzt eine scheibenförmige, in ihrer Zentralachse gelagerte Halterungsplatte 1. Am äußeren Umfang dieser Platte ist eine Anzahl um Horizontalachsen drehbar gelagerter Rollen 2 angeordnet, deren Achsen zur Drehachse der Halterungsplatte 1 parallel liegen und die an ihrem einen Ende an der Halterungsplatte 1 und an ihrem anderen Ende an einem Halterungsring 3 (Fig. 2) radial verschiebbar gelagert sind. Um diese Radialverschiebung zu ermöglichen, sind jeder Rollenachse an beiden Lagerungsseiten Hydraulikzylinder 4 zugeordnet, die eine für jede Rolle individuelle Radialverschiebung innerhalb entsprechender Ausnehmungen 5 in der Halterungsplatte 1 und des Halterungsringes 3 ermöglichen. Diese Hydraulikzylinder sind über auf der Antriebswelle 6 der Halterungsplatte 1 angeordnete selbstnachstellende Gleitringe 7 mit einem hydro-elektrischen Wandler 8 verbunden. Im Drehzentrum der von der Halterungsplatte 1, den Rollen 2 und dem Halterungsring 3 sowie der Antriebswelle 6 gebildeten Rollenkranz 9 ist ein von einem weiteren Elektromotor 10 angetriebener Haspeldom 11 angeordnet, dessen Drehachse sich mit der Zentralachsä der Antriebswelle 6 des Rollenkranzes deckt. Der Haspeldom 11 mit dem Haspelantriebsmotor 10 sind mit nicht dargestellten Mitteln zum Aufnehnen und Einbringen neuer Vorratscoils hydraulisch aus dem Drehzentrum ausfahrbar.The arrangement described in Fig. 1 has a disc-shaped, mounted in its central axis mounting plate 1. On the outer periphery of this plate a number of rollers 2 are rotatably mounted about horizontal axes, the axes of which are parallel to the axis of rotation of the mounting plate 1 and which at one end the mounting plate 1 and at its other end on a mounting ring 3 (Fig. 2) are mounted radially. In order to enable this radial displacement, hydraulic cylinders 4 are assigned to each roller axis on both bearing sides, which enable an individual radial displacement for each roller within corresponding recesses 5 in the mounting plate 1 and the mounting ring 3. These hydraulic cylinders are connected to a hydro-electric converter 8 via self-adjusting slide rings 7 arranged on the drive shaft 6 of the mounting plate 1. In the center of rotation of the roller ring 9 formed by the mounting plate 1, the rollers 2 and the mounting ring 3 and the drive shaft 6, a reel dome 11 driven by a further electric motor 10 is arranged, the axis of rotation of which coincides with the central axis of the drive shaft 6 of the roller ring. The reel dome 11 with the reel drive motor 10 can be hydraulically extended from the center of rotation with means (not shown) for taking up and introducing new supply coils.

In dem Raum zwischen dem Haspeldom 11 und den Rollen 2 des Rollenkranzes 9 ist die Schweißvorrichtung 12 angeordnet Diese besteht aus einem Support 13, der von Spindeln 14 in Richtung der Zentralachse der Antriebswelle 11 von einem Supportantrieb 15 bewegbar ist. Die Spindeln 14 sind unterhalb der Rollen 2 an der Halterungsplatte 1 und dem Halterungsring 3 drehbar gelagert. Der Support 13 arbeitet in Verbindung mit einer Klemmvorrichtung 16, die in Fig. 5 näher beschrieben ist. Der Support 13 beinhaltet einen schwenkbaren Hobel 68 sowie den letzten Umlenkspiegel 18 einer Laserschweißanordnung, deren Energiestrahlerzeuger 19 sich außerhalb der Anordnung befindet und deren Strahl 20 durch die als Hohlwelle ausgebildete Antriebswelle 6 hindurch über einen ersten Umlenkspiegel 21 in Richtung auf die Schweißvorrichtung 12 und durch einen zweiten Umlenkspiegel 22 in Richtung auf den Support 13 und von dort durch den letzten Umlenkspiegel 18 schließlich auf die Schweißnaht gelenkt wird. Sämtliche für die Steuerung des Verfahrensablaufes zu koordinierenden Steuerfunktionen sowohl für die Inbetriebsetzung wie für die Steuerung der Antriebsaggregate und die Sensoren werden über Steuerbausteine von einem Steuerrechner 24 entsprechend dem ihm eingegebenen Steuerprogramm vorgenommen. Dabei sind der Antriebsmotor 25 für den Rollenkranz 9, über die Steuerleitung 26, der Antriebsmotor 27 für den Haspeldorn 11 des Vorratscoils 23 über die Steuerleitung 28, der Supportantrieb 15 über die Steuerleitung 29, die beiden Näherungsschalter 30, 31 für den Supportantrieb über die Steuerleitungen 32, 33, der Motor 34 für die Einzugs-Treiberrolle 35 über die Steuerleitung 36, der Antriebsmotor 37 für die Austritts-Treiberrolle 38 über die Steuerleitung 39, der Energiestrahlerzeuger 19 über die Steuerleitungen 39, der elektrohydraulische Wandler 8 über die Steuerleitung 40 und der elektrohydraulische Energiewandler 42 über die Steuerleitung 41 mit an einem zentralen Steuerrechner 24 angeschlossenen Steuerbausteine 43 bis 52 verbunden. Dieser ist über eine weitere Steuerleitung 53 an den nicht dargestellten zentralen Rechner der Verarbeitungsanlage angeschlossen.In the space between the reel dome 11 and the rollers 2 of the roller ring 9, the welding device 12 is arranged. This consists of a support 13, which can be moved by spindles 14 in the direction of the central axis of the drive shaft 11 by a support drive 15. The spindles 14 are rotatably mounted below the rollers 2 on the mounting plate 1 and the mounting ring 3. The support 13 works in conjunction with a clamping device 16, which is described in more detail in FIG. 5. The support 13 includes a pivotable planer 68 and the last deflecting mirror 18 of a laser welding arrangement, the energy beam generator 19 of which is located outside the arrangement and the beam 20 of which passes through the drive shaft 6 designed as a hollow shaft, via a first deflecting mirror 21 in the direction of the welding device 12 and through one second deflecting mirror 22 in the direction of the support 13 and from there is finally directed by the last deflecting mirror 18 onto the weld. All of the control functions to be coordinated for the control of the process sequence, both for the commissioning and for the control of the drive units and the sensors, are carried out via control modules by a control computer 24 in accordance with the control program input to it. The drive motor 25 for the roller ring 9, via the control line 26, the drive motor 27 for the reel mandrel 11 of the supply coil 23 via the control line 28, the support drive 15 via the control line 29, the two proximity switches 30, 31 for the support drive via the control lines 32, 33, the motor 34 for the feed drive roller 35 via the control line 36, the drive motor 37 for the exit driver roller 38 via the control line 39, the energy beam generator 19 via the control lines 39, the electrohydraulic converter 8 via the control line 40 and the Electrohydraulic energy converters 42 are connected via the control line 41 to control modules 43 to 52 connected to a central control computer 24. This is connected via a further control line 53 to the central computer (not shown) of the processing system.

Die Funktion der Anordnung nach den Figuren 1, 2 und 5 wird im folgenden beschrieben. Vor dem Inbetriebsetzen der Verarbeitungsanlage wird zunächst ein Vorratscoil 23 mit Hilfe des Haspeldoms 11 in das Zentrum des Rollenkranzes 9 eingeführt, so daß es die in Fig. 2 schematisch dargestellte Position einnimmt. Dann wird der Haspelantriebsmotor 10 so lange in Betrieb gesetzt, bis der Anfang des Vorratscoils durch die trichterförmigen Leitbleche 54, 55 zwischen die Einzugs-Treiberrolle 35 und die Einzugs-Andrückrolle 56 gelangt. Dann wird der Haspelantriebsmotor ausgeschaltet und der Hydraulikzylinder 57 der Einzugs-Andrückrolle 56 in Betrieb gesetzt, so daß der Anfang des Vorratscoils zwischen der Einzugs-Treiberrolle 35 und der Einzugs-Andrückrolle 56 festgeklemmt wird. Dann wird der Antriebsmotor 34 der Einzugs-Treiberrolle 35 eingeschaltet, so daß das Band zwischen den geöffneten Einzugs-Spannbacken 58 und den ebenfalls geöffneten Austritts-Spannbacken 59 zwischen die Austritts-Treiberrolle 38 und die Austritts-Andrückrolle 60 gelangt. Danach wird der Hydraulikzylinder 61 der Austritts-Andrückrolle 60 betätigt, der Hydraulikzylinder 57 der Einzugs-Andrückrolle 56 gelöst und der Antriebsmotor 37 der Austritts-Treiberrolle 38 eingeschaltet, so daß das Band - eventuell über weitere, nicht dargestellte Führungsmittel - zwischen zwei Rollen des Rollenkranzes nach außen gelangt. Gleichzeitig wird der nach außen ausgetretene Bandanfang von einem nicht dargestellten Greifer der ebenfalls nicht dargestellten, noch stillstehenden Verarbeitungsanlage zugeführt. Nun wird der Rollenkranz durch Inbetriebsetzen seines Antriebsmotors 25 in eine dem Wickelsinn des Vorratscoils 23 gleichgerichteten und der Bewegungsrichtung des Bandes entgegengesetzten Drehbewegung versetzt, so daß das Band vom Vorratscoil 23 außen auf den Rollenkranz gewickelt wird und dort einen Speichercoil 62 bildet. Nach dem Aufwickeln der ersten Lage werden die Hydraulikzylinder 4 jeder Rolle über den hydraulisch-elektrischen Wandler 8 derart betätigt, daß die jeweilige Rolle in Richtung zum Drehpunkt hin Lage für Lage soviel nachgeben kann, daß die einzelnen Lagen gegen einen gewünschten Druck untereinander gewickelt werden. Der Antriebsmotor 25 bleibt so lange in dieser Drehrichtung eingeschaltet, bis das Band vom Vorratscoii 23 nahezu abgewickelt ist und die Einzugs-Treiberrolle 35 erreicht. Dann wird seine Drehzahl verlangsamt und schließlich die Drehrichtung umgekehrt, bis das Bandende den Schlitz zwischen den Einzugs-Spannbacken 58 und den Austritts-Spannbacken 59, also die Bearbeitungs-und Schweißebene erreicht hat. Dann wird der Motor 37 unterbrochen und die Hydraulikzylinder 64, 65 der Austritts-Spannbacken werden mit einem solchen Druck betätigt, daß das Bandende zwischen diesen Backen eingeklemmt ist. Zu diesem Zeitpunkt ist die Winkelgeschwindigkeit des Bandendes gleich der Bandgeschwindigkeit und der Speichercoil 62 wird abgewickelt. Dann wird in der bereits beschriebenen Weise ein weiterer Vorratscoil auf den Haspeldom 11 aufgesetzt und ins Zentrum des Rollenantriebes 9 eingeführt. Sodann wiederholt sich der Vorgang des Einführens des Coilanfanges bei umlaufender Klemm- und Schweißvorrichtung in deren Einzugs-Treiberrollenpaar 35, 56 deren Antriebsmotor 34 nach Beendigung des Andrückvorganges solange betätigt wird, bis der Bandanfang des neuen Vorratscoils durch die geöffneten Einzugs-Spannbacken 58 wiederum in den Bearbeitungsschlitz zwischen die Einzugs-Spannbacken 58 und die Austritts-Spannbacken 59 gelangt und das Bandende des vorangegangenen Coils berührt. Danach werden die Hydraulikzylinder 66 und 67 der Einzugs-Spannbacken 58 mit einem solchen Druck betätigt, daß diese den Coilanfang festklemmen. Dann wird der in der rechten Endstellung (Fig.2) befindliche Support 13 durch Einschalten des Supportantriebes 15 betätigt, so daß dieser mit seinem Hobelwerkzeug 68 die beiden aneinanderliegenden Kanten der eingespannten Bleche parallel hobelt und der Supportantrieb 15 nach dem Erreichen der Endstellung des Supports 13 vom Näherungsschalter 30 unterbrochen wird. Dabei gelangen die Späne in den Auffangbehälter 63. Gleichzeitig klappt das Hobelwerkzeug, das um den Drehpunkt 69 im Uhrzeigersinn schwenkbar ist, mit nicht dargestellten Mitteln aus der Arbeits- in eine Ruheposition. Danach werden die Hydraulikzylinder 64, 65, 66, 67 vom hydraulisch-elektrischen Wandler 42 derart umgesteuert, daß alle vier Spannbacken durch die Parallelogramm-Hebel 70, 71, 72, 73 gegeneinander bewegt werden, bis die beiden plangehobelten Blechkanten wiederum aneinanderliegen. Danach werden der Energiestrahlerzeuger 19 des Laserschweißgerätes eingeschaltet und gleichzeitig der Supportantrieb 15 in entgegengesetzter Drehrichtung bewegt, so daß der Laserstrahl mit Hilfe der Umlenkspiegel 21, 22 und 18 und einer nicht dargestellten Fokussiereinrichtung über die Blechkanten geführt wird und diese verschweißt. Sobald der Support 13 seine andere Endstellung erreicht, werden der Supportantrieb 15 und der Energiestrahlerzeuger 19 durch einen entsprechenden Impuls des Näherungsschalters 31 ausgeschaltet, der Supportantrieb 15 in umgekehrter Drehrichtung wieder eingeschaltet und das Hobelwerkzeug 68 wieder in seine Arbeitsstellung geschwenkt. Gleichzeitig wird das Hobeiwerkzeug 68 mit nicht dargestellten Mitteln so eingestellt, daß es nunmehr die Schweißnaht planhobelt. Nach dem Erreichen der anderen Endstellung unterbricht der Näherungsschalter 30 wiederum den Supportantrieb 15. Nach dem vollsltändigen Abwickeln des auf dem Rollenkranz befindlichen Speichercoils 62 werden die Hydraulikzylinder 64, 65, 66, 67 entlastet, so daß die Spannbacken 58, 59 öffnen. Gleichzeitig werden der Antriebsmotor 37 der Austritts-Treiberrolle 38 eingeschaltet und die Drehrichtung des Antriebsmotor 25 des Rollenkranzes umgesteuert, so daß sich der Rollenkranz wieder im Uhrzeigersinn dreht und das auf dem Vorratscoil befindliche Band wiederum über die Rolle 62 als Speichercoil auf den Rollenkäfig aufgewickelt wird. Dieser Vorgang wird solange fortgesetzt, bis das Bandende den Vorratscoil verlassen und die Einzugs-Treiberrolle 35 erreicht hat. Danach wiederholt sich der bereits beschriebene Vorgang. Die Abmessungen der Anlage und die Geschwindigkeiten werden dabei so gewählt, daß der Speichercoil nach Beendigung jedes Bearbeitungsvorganges jeweils vollständig abgewickelt ist.The function of the arrangement according to Figures 1, 2 and 5 is described below. Before the processing system is started up, a supply coil 23 is first introduced into the center of the roller ring 9 with the aid of the reel dome 11, so that it assumes the position shown schematically in FIG. 2. Then the reel drive motor 10 is put into operation until the beginning of the supply coil passes through the funnel-shaped guide plates 54, 55 between the feed drive roller 35 and the feed pressure roller 56. Then the reel drive motor is switched off and the hydraulic cylinder 57 of the feed pressure roller 56 is put into operation, so that the beginning of the supply coil is clamped between the feed driver roller 35 and the feed pressure roller 56. Then the drive motor 34 of the feed drive roller 35 is switched on, so that the belt between the open feed jaws 58 and the also open output jaws 59 passes between the output drive roller 38 and the output pressure roller 60. Then the hydraulic cylinder 61 of the exit pressure roller 60 is actuated, the hydraulic cylinder 57 of the feed pressure roller 56 is released and the drive motor 37 of the exit driving roller 38 is switched on, so that the belt - possibly via further guide means, not shown - between two rollers of the roller ring got outside. At the same time, the outgoing strip start is fed by a gripper (not shown) to the still stationary processing system (also not shown). Now the roller ring is put into a rotational movement in the same direction as the winding direction of the supply coil 23 and opposite to the direction of movement of the strip by starting up its drive motor 25, so that the strip is wound on the outside of the supply coil 23 onto the roller ring and forms a storage coil 62 there. After the first layer has been wound up, the hydraulic cylinders 4 of each roll are actuated via the hydraulic-electrical converter 8 in such a way that the respective roll moves in the direction of the pivot point Layer by layer can yield so much that the individual layers are wound against each other against a desired pressure. The drive motor 25 remains switched on in this direction of rotation until the tape is almost unwound from the supply coil 23 and reaches the feed drive roller 35. Then its speed is slowed down and finally the direction of rotation is reversed until the strip end has reached the slot between the pull-in jaws 58 and the outlet jaws 59, that is to say the machining and welding level. Then the motor 37 is stopped and the hydraulic cylinders 64, 65 of the outlet clamping jaws are actuated with such a pressure that the end of the band is clamped between these jaws. At this time, the angular velocity of the tape end is equal to the tape speed and the storage coil 62 is unwound. Then, in the manner already described, a further supply coil is placed on the reel dome 11 and inserted into the center of the roller drive 9. Then the process of inserting the beginning of the coil is repeated with the rotating clamping and welding device in its retraction driver roller pair 35, 56 whose drive motor 34 is actuated after the pressing process has ended until the beginning of the band of the new supply coil is opened again by the opened retracting jaws 58 in the Machining slot between the pull-in jaws 58 and the outlet jaws 59 reaches and touches the strip end of the previous coil. Then the hydraulic cylinders 66 and 67 of the pull-in jaws 58 are actuated with such a pressure that they clamp the beginning of the coil. Then the support 13 located in the right end position (FIG. 2) is actuated by switching on the support drive 15, so that the planer tool 68 planes the two adjacent edges of the clamped sheets in parallel and the support drive 15 after reaching the end position of the support 13 is interrupted by the proximity switch 30. The chips reach the collecting container 63. At the same time, the planing tool, which can be pivoted clockwise about the pivot point 69, folds out of the working position into a rest position by means not shown. Then the hydraulic cylinders 64, 65, 66, 67 are reversed by the hydraulic-electric converter 42 in such a way that all four clamping jaws are moved against one another by the parallelogram levers 70, 71, 72, 73 until the two plane-planed sheet metal edges are again against one another. Then the energy beam generator 19 of the laser welding device is switched on and at the same time the support drive 15 is moved in the opposite direction of rotation, so that the laser beam is guided over the sheet metal edges with the aid of the deflecting mirrors 21, 22 and 18 and a focusing device (not shown) and welded. As soon as the support 13 reaches its other end position, the support drive 15 and the energy beam generator 19 are switched off by a corresponding pulse from the proximity switch 31, the support drive 15 is switched on again in the opposite direction of rotation and the planing tool 68 is pivoted back into its working position. At the same time, the notching tool 68 is adjusted by means not shown so that it now planes the weld seam. After reaching the other end position, the proximity switch 30 again interrupts the support drive 15. After the storage coil 62 on the roller ring has been completely unwound, the hydraulic cylinders 64, 65, 66, 67 are relieved, so that the clamping jaws 58, 59 open. At the same time, the drive motor 37 of the exit drive roller 38 is switched on and the direction of rotation of the drive motor 25 of the roller ring is reversed, so that the roller ring rotates clockwise again and the tape located on the supply coil is in turn wound onto the roller cage via the roller 62 as a storage coil. This process continues until the end of the strip has left the supply coil and has reached the feed drive roller 35. Then the process already described is repeated. The dimensions of the system and the speeds are chosen so that the storage coil is completely unwound after the completion of each processing operation.

Das Prinzip des Verfahrens besteht also darin, den Inhalt eines Vorratscoils mit kleinem Durchmesser, während des Verarbeitungsprozesses in einen den Vorratscoil konzentrisch umgebenden Speichercoil erheblich größeren Durchmessers zu übertragen, beide Coils während des Ablaufens des Speichercoils zu verschweißen und einen neuen Vorratscoil einzubringen. Dabei entsteht zum einen ein genügend großer ringförmiger Raum zwischen den beiden Coils für die Unterbringung der Klemm- und Schweißvorrichtung und zum anderen steht genügend Zeit für die Abwicklung des Schweißvorganges zur Verfügung.The principle of the method is therefore to transfer the contents of a storage coil with a small diameter, during the processing process to a storage coil of considerably larger diameter concentrically surrounding the storage coil, to weld both coils while the storage coil is running and to insert a new storage coil. On the one hand, there is a sufficiently large annular space between the two coils for accommodating the clamping and welding device, and on the other hand there is sufficient time for the welding process to be carried out.

Das bisher beschriebene Funktionsprinzip nach den Figuren 1 und 2 läßt sich dahingehend abwandeln, daß der Vorratscoil 23 nicht außen um den Rollenkranz herum, sondern innen anliegend gewickelt wird. Dadurch besteht die Möglichkeit, den Rollenkranz feststehend anzuordnen. Dabei geschieht das Abwickeln vom Vorratscoil 23 und das Anlegen des Bandes mit Hilfe der eine Rotationsbewegung um die Zentralachse des Rollenkranzes ausführenden Klemm- und Schweißvorrichtung. Der prinzipielle Aufbau dieser Anordnung ist aus den Figuren 3 und 4 zu erkennen. Die Rollen 2 sind wiederum um ihre Zentralachse drehbar einerseits an einer Halterungsplatte 74 und andererseits an einem Halterungsring 75 befestigt, die beide fest verankert sind. Demgegenüber ist die Klemm- und Schweißvorrichtung gemäß Fig. an einem Winkelarm 76 angeordnet, der mit einer zentralen Antriebswelle 77 verbunden ist. Diese Antriebswelle wird vom Motor 25 angetrieben. Die Antriebswelle 74, der radiale Teil des Winkelarmes 76 und die Spindel 78 sind für den Durchtritt des vom Energiestrahlerzeuger 19 kommenden Energiestrahls hohl. Die Umlenkspiegel 21 und 22 sind in den Kanten dieser Strahlenkanäle angeordnet und lenken den Energiestrahl auf den Umlenkspiegel 18, der ihn in Richtung auf die Schweißnaht führt. Bei dieser Gestaltung der Anordnung ergibt sich folgender Verfahrensablauf : Zunächst wird wiederum bei stillstehender Verarbeitungsanlage der Anfang eines wie beschrieben in das Zentrum des Rollenkranzes eingeführten Vorratscoils durch die Klemmvorrichtung mit Hilfe der Austritts-Treiberrollen 38 in Verbindung mit der Andruckrolle 60 zwischen zwei geeignete Kranzrollen hindurch nach außen geführt und mit nicht dargestellten Mitteln der Verarbeitungsanlage zugeleitet. Dann wird die Klemm- und Schweißvorrichtung 76 in eine Drehbewegung entgegengesetzt zum Uhrzeigersinn versetzt, wobei die Austritts-Treiberrolle 38 die erste Lage des Speichercoils innen an die Rollen 2 des Rollenkranzes anlegt und dann Lage an Lage anlegend den Speichercoil wickelt Wenn das Ende des Vorratscoils die Schweißnaht erreicht hat, werden die bereits beschriebenen Funktionen ausgelöst und die Verarbeitungsanlage beginnt zu laufen. Gleichzeitig wird der Motor 25 für den Winkelarm der Klemm- und Schweißvorrichtung 12, 16 in Betrieb gesetzt und bewegt diese nunmehr im Uhrzeigersinn um die Zentralachse der Anordnung, so daß der Speichercoil abgewickelt wird. Währendessen wird ein neuer Vorratscoil eingefahren und der Motor 10 eingeschaltet, so daß sich der Vorratscoil ebenfalls im Uhrzeigersinn mit einer solchen Winkelgeschwindigkeit dreht, daß der Bandanfang durch die trichterförmigen Gleitbleche 54, 55 in die sich in gleicher Richtung drehende Klemm- und Schweißvorrichtung in der beschriebenen Weise eingefädelt werden kann. Danach wird die Schweißvorrichtung in der beschriebenen Weise betätigt, so daß die Bandkanten verschweißt werden. Nach vollständigem Ablauf des Speichercoils wird der Motor 25 stillgesetzt und in umgekehrter Drehrichtung (entgegen dem Uhrzeigersinn) wieder in Betrieb genommen, so daß mit Hilfe der Austritts-Treiberrolle 38 mit Andrückrolle 60 der Vorratscoil abgewickelt und als Speichercoil wiederum innen gegen den Rollenkranz gewickelt wird. Dieser Vorgang wiederholt sich entsprechend, so daß ein kontinuierlicher Betrieb sichergestellt ist Um den sich beim Abwickeln des Speichercoils verringernden Außendurchmesser des Speichercoils auszugleichen, können einige der Rollen 2 des Rollenkranzes (9) entweder gegen Federdruck oder durch entsprechende Zwangsverstellung radial beweglich angeordnet sein.The previously described functional principle according to FIGS. 1 and 2 can be modified in such a way that the supply coil 23 is not wound around the outside of the roller ring, but rather against the inside. This makes it possible to arrange the roller ring fixed. The supply coil 23 is unwound and the tape is applied with the aid of the clamping and welding device which executes a rotational movement about the central axis of the roller ring. The basic structure of this arrangement can be seen from FIGS. 3 and 4. The rollers 2 are in turn rotatable about their central axis on the one hand on a mounting plate 74 and on the other hand on a mounting ring 75, both of which are firmly anchored. In contrast, the clamping and welding device according to FIG. 1 is arranged on an angle arm 76 which is connected to a central drive shaft 77. This drive shaft is driven by the motor 25. The drive shaft 74, the radial part of the angle arm 76 and the spindle 78 are hollow for the passage of the energy beam coming from the energy beam generator 19. The deflecting mirrors 21 and 22 are arranged in the edges of these beam channels and direct the energy beam onto the deflecting mirror 18, which guides it in the direction of the weld seam. This configuration of the arrangement results in the following procedure: First, once the processing system has come to a standstill, the beginning of a supply coil, as described, is introduced into the center of the roller ring by the clamping device with the aid of the outlet driver rollers 38 in connection with the pressure roller 60 between two suitable ring rollers guided outside and fed to the processing plant with means not shown. Then the clamping and welding device 76 is set in a counterclockwise rotation, the exit drive roller 38 applying the first layer of the storage coil to the inside of the rollers 2 of the roller ring and then applying the storage coil layer by layer when the end of the supply coil coils the Has reached the weld seam, the functions already described are triggered and the processing system begins to run. At the same time, the motor 25 for the angle arm of the clamping and welding device 12, 16 is put into operation and now moves it clockwise around the central axis of the arrangement, so that the storage coil is unwound. Meanwhile, a new supply coil is retracted and the motor 10 is switched on, so that the supply coil also rotates clockwise at such an angular speed that the beginning of the band through the funnel-shaped sliding plates 54, 55 into the clamping and welding device rotating in the same direction in that described Way can be threaded. The welding device is then actuated in the manner described, so that the strip edges are welded. After the storage coil has run out completely, the motor 25 is stopped and put into operation again in the opposite direction of rotation (counterclockwise), so that with the help of the exit driver roller 38 with the pressure roller 60 the supply coil is unwound and the storage coil is in turn wound against the inside of the roller ring. This process is repeated accordingly, so that continuous operation is ensured. In order to compensate for the outer diameter of the storage coil, which is reduced when the storage coil is being unwound, some of the rollers 2 of the roller ring (9) can be arranged to be radially movable either against spring pressure or by corresponding positive adjustment.

Bei den bisher beschriebenen Anordnungen geschieht die Bildung des Speichercoils 62 entweder durch Aufwickeln des auf dem Vorratscoils 23 gespeicherten Bandes auf den äußeren Umfang des drehbaren Rollenkranzes 9 (Fig. 1) oder durch Anlegen des Bandes an die Innenseite des feststehenden Rollenkranzes 9 (Fig. 3). Unter bestimmten Voraussetzungen, bei denen vor allem die Materialeigenschaften des Bandes eine Rolle spielen, sind diese Anordnungen mit den entsprechenden Verfahren anwendbar. Sind diese Materialeigenschaften nicht vorhanden, können diese vorbeschriebenen Verfahren insofern zu Schwierigkeiten führen, als sich das Band bei der Anordnung nach Fig. 1 auf dem Rollenkranz 9 zu einem Vieleck zusammenzieht oder bei der Anordnung nach Fig. sich die erste Lage des Vorratscoils nicht über den gesamten Umfang an die Rollen 2 des Rollenkranzes 9 anlegt. Um die Anordnung auch in diesen Fällen anwenden zu können, wird die Anordnung nach Fig. 1 durch einen sogenannten Formbildungs-Rollenkäfig ergänzt (Fig. 7), bei dem Rollen 79, welche die gleiche Breite aufweisen wie die Rollen 2 um diese herum, so angeordnet sind, daß der Speichercoil 62 zwischen den durch die Rollen 2 und die Rollen 79 gebildeten Rollenkränzen geführt und geformt wird. Dabei sind die Rollen 2 des Rollenkranzes 9 wiederum radial verschiebbar, so daß der zur Verfügung stehende Raum zwischen den beiden vorgenannten Rollenkränzen dem Wickeldurchmesser des Speichercoils angepaßt werden kann. Darüber hinaus besitzt die Anordnung nach Fig. 7 eine mit der Klemm- und Schweißvorrichtung 12, 16 fest verbundene, konzentrisch zum Tragrollenkranz 9 drehbar gelagerte Hilfstrommel 80, deren Zylinder den Raum für den Vorratscoil und die Klemm- und Schweißvorrichtung umgibt, deren Breite derjenigen des Tragrollenkranzes 9 entspricht und deren Durchmesser um die Dicke des Hilfscoils 92 geringer ist als der kleinste Innendurchmesser des Rollenkranzes der Tragrollentrommel und der in Höhe der Austritts-Treiberrolle 38 der Klemmvorrichtung 16 einen Schlitz zum Durchtritt des Walzbandes aufweist.In the arrangements described so far, the formation of the storage coil 62 takes place either by winding the tape stored on the supply coil 23 onto the outer circumference of the rotatable roller ring 9 (FIG. 1) or by applying the tape to the inside of the fixed roller ring 9 (FIG. 3 ). Under certain conditions, in which the material properties of the strip play a role, these arrangements can be used with the corresponding methods. If these material properties are not available, these methods described above can lead to difficulties insofar as the band contracts to form a polygon on the roller ring 9 in the arrangement according to FIG. 1 or the first layer of the supply coil does not overlap the arrangement according to FIG creates the entire circumference on the rollers 2 of the roller ring 9. In order to be able to use the arrangement in these cases as well, the arrangement according to FIG. 1 is supplemented by a so-called form-forming roller cage (FIG. 7), in which rollers 79 which have the same width as the rollers 2 around them, so are arranged so that the storage coil 62 is guided and shaped between the roller rings formed by the rollers 2 and the rollers 79. The rollers 2 of the roller ring 9 are in turn radially displaceable, so that the space available between the two roller rings mentioned above can be adapted to the winding diameter of the storage coil. In addition, the arrangement according to FIG. 7 has an auxiliary drum 80 which is fixedly connected to the clamping and welding device 12, 16 and is rotatably mounted concentrically to the idler ring 9, the cylinder of which surrounds the space for the supply coil and the clamping and welding device, the width of which is that of the Carrier roller ring 9 corresponds and whose diameter is smaller by the thickness of the auxiliary coil 92 than the smallest inner diameter of the roller ring of the supporting roller drum and which has a slot for the passage of the rolled strip at the level of the exit driving roller 38 of the clamping device 16.

Der in Fig. 10 dargestellte Querschnitt der Anordnung zeigt den Antriebsmechanismus der konzentrisch angeordneten Funktionselemente. Dabei treibt der Motor 10 über eine Vielfachnutwelle 81 den im vorderen Lager 82 und im hinteren Lager 83 einseitig gelagerten Haspeldorn 11 an. Die Hilfstrommel 80, die über eine Lagerbuchse 84 auf dem Haspeldom 11 zu diesem konzentrisch gelagert ist, wird von einem Motor 85 über ein Ritzel-Zahnkranz-Getriebe 86 konzentrisch zum Haspeldom angetrieben. Der Rollenkranz 9 der Tragrollen 2 ist an einem Tragring 91 befestigt, der auf der Lagerbuchse 84 der Hilfstrommel 80 konzentrisch drehbar gelagert ist. Dieser Tragring wird von einem Motor 87 über ein Ritzel-ZahnradGetriebe 88 angetrieben. In der Nähe des hinteren Lagers 83 des Haspeldoms 11 ist auf diesem eine Positionierungsscheibe 89 befestigt, die von Hydraulikzylindem 90 in axialer Richtung um einen solchen Hub verschiebbar ist, daß Mittenabweichungen des vom Vorratscoil ablaufenden Bandes korrigiert werden können.The cross section of the arrangement shown in FIG. 10 shows the drive mechanism of the concentrically arranged functional elements. The motor 10 drives the coiler mandrel 11, which is mounted on one side in the front bearing 82 and in the rear bearing 83, via a multiple spline shaft 81. The auxiliary drum 80, which is mounted concentrically to the reel dome 11 via a bearing bush 84, is driven concentrically to the reel dome by a motor 85 via a pinion-ring gear transmission 86. The roller ring 9 of the support rollers 2 is fastened to a support ring 91 which is concentrically rotatably mounted on the bearing bush 84 of the auxiliary drum 80. This support ring is driven by a motor 87 via a pinion gear transmission 88. In the vicinity of the rear bearing 83 of the reel dome 11, a positioning disk 89 is fastened thereon, which can be displaced in the axial direction by such a stroke by hydraulic cylinders 90 that center deviations of the strip running off the supply coil can be corrected.

Ausgehend von der Anordnung nach den Figuren 1, 2, 3 und 4 und nach Vollzug des dort beschriebenen Einfädelungsvorganges des vom Vorratscoil 23 durch die Klemmvorrichtung 16 und den Schlitz der Hilfstrommel 80 durch zwei Rollen 2 des Tragrollenkranzes hindurch nach außen der Verarbeitungsanlage zugeführten Bandanfangs werden der Antriebsmotor 10 für den Haspeldorn 11, der Motor 37 für die Austritts-Treiberrolle 38 und der Antriebsmotor 87 für den Rollenkranz 9 der Tragrollen 2 in Betrieb gesetzt und derart gesteuert, daß das Band gegen die Formbildungsrollen 79 gelegt wird. Während dieses Einspeichervorganges zur Bildung eines Speichercoils 62 bewegen sich der Rollenkranz 9 und die Hilfstrommel 80 synchron. Mit fortschreitendem Einspeichervorgang werden die Tragrollen 2 mit nicht dargestellten Mitteln um solche Beträge radial in Richtung auf die Drehachse bewegt, daß sich der Speichercoil nach innen aufbauen kann (Fig. 8). Sobald das Band vollständig vom Vorratscoil abgelaufen ist, d. h. das Bandende den Bearbeitungsschlitz zwischen den Spannbacken 58, 59 erreicht hat, werden die vorgenannten Antriebsmotoren stillgesetzt und dem Haspeldorn 11 ein neuer Vorratscoil zugeführt. Nach dessen Einfädeln in die Klemm- und Schweißvorrichtung 12, 16 in der bereits beschriebenen Weise beginnt der Schweißvorgang bei stehender Hilfstrommel 80. Gleichzeitig werden die Weiterverarbeitungsanlage und der Antriebsmotor 87 für den Rollenkranz 9 in umgekehrter Drehrichtung in Betrieb gesetzt. Durch den von der Weiterverarbeitungsanlage ausgeübten Bandzug in Verbindung mit dem sich 5 in Abwickelrichtung drehendem Rollenkranz 9 wird der eine Teil des auf dem Speichercoil 62 gespeicherten Bandes der Verarbeitungsanlage, der andere Teil auf die in Ruhe befindliche Hilfstrommel 80 aufgewickelt, so daß auf dieser ein Hilfscoil 92 entsteht, wenn der Speichercoil 62 vollständig abgewickelt ist (Fig. 9). Gleichzeitig werden die Tragrollen 2 wieder radial nach außen geführt, so daß der ursprüngliche Zustand zum Aufbau eines folgenden Speichercoils wieder hergestellt ist. Unmittelbar nach Ablauf des Speichercoils 62 und beendetem Schweißvorgang wird der Motor 85 entgegen der vorigen Drehrichtung in Betrieb gesetzt, so daß der Hilfscoil 92 von der die Hilfstrommel 80 in die Verarbeitungsanlage läuft. Nach dem Abbau des Hilfscoils 92 wird die Drehrichtung des Motors 85 für die Hilfstrommel 80 umgekehrt und gleichzeitig der Motor 87 für den Rollenkranz 9 eingeschaltet. Nun bewegen sich der Rollenkranz 9 und die Hilfstrommel 80 wieder synchron, so daß ein neuer Speichercoil in der beschriebenen Weise bei gleichzeitigem Ablauf des Bandes zur Verarbeitungsanlage gebildet werden kann. Der beschriebene Vorgang wiederholt sich im folgendem kontinuierlich.Proceeding from the arrangement according to FIGS. 1, 2, 3 and 4 and after completion of the threading process described there, from the supply coil 23 through the clamping device 16 and the slot of the auxiliary drum 80 through two rollers 2 of the idler roller ring outside of the processing system fed to the beginning of the belt, the drive motor 10 for the reel mandrel 11, the motor 37 for the exit drive roller 38 and the drive motor 87 for the roller ring 9 of the support rollers 2 are put into operation and controlled in such a way that the belt is placed against the forming rollers 79 . During this storage process to form a storage coil 62, the roller ring 9 and the auxiliary drum 80 move synchronously. As the storage process progresses, the support rollers 2 are moved radially in the direction of the axis of rotation by means not shown by such amounts that the storage coil can build up inwards (FIG. 8). As soon as the strip has completely run off the supply coil, ie the end of the strip has reached the processing slot between the clamping jaws 58, 59, the aforementioned drive motors are stopped and the reel mandrel 11 is fed a new supply coil. After threading it into the clamping and welding device 12, 16 in the manner already described, the welding process begins with the auxiliary drum 80 stationary. At the same time, the further processing system and the drive motor 87 for the roller ring 9 are put into operation in the opposite direction of rotation. Due to the tape tension exerted by the further processing system in connection with the roller ring 9 rotating in the unwinding direction, one part of the tape of the processing system stored on the storage coil 62, the other part is wound onto the auxiliary drum 80 which is at rest, so that an auxiliary coil is placed on it 92 arises when the storage coil 62 is completely unwound (FIG. 9). At the same time, the idlers 2 are guided radially outward again, so that the original condition for building a subsequent storage coil is restored. Immediately after the storage coil 62 has ended and the welding process has ended, the motor 85 is started in the opposite direction of rotation, so that the auxiliary coil 92 from which the auxiliary drum 80 runs into the processing system. After dismantling the auxiliary coil 92, the direction of rotation of the motor 85 for the auxiliary drum 80 is reversed and at the same time the motor 87 for the roller ring 9 is switched on. Now the roller ring 9 and the auxiliary drum 80 move synchronously again, so that a new storage coil can be formed in the manner described while the belt is running to the processing system. The process described is repeated continuously in the following.

Ein weiterer Vorteil der in den Fig. 7 bis 10 dargestellten Anordnung besteht darin, daß der Schweißvorgang selbst bei stillstehender Schweißvorrichtung ausgeführt werden kann.Another advantage of the arrangement shown in FIGS. 7 to 10 is that the welding process can be carried out even when the welding device is at a standstill.

Claims (11)

1. A method for welding rolled strips of finite lengths to form continuous strips during the manufacturing or treatment process, in which, by means of a clamping and welding device (12, 16), the end of a preceding finite strip length is welded in each case with the beginning of a subsequent finite strip length, in that, prior to the commencement of the welding, a section of the preceding strip is detected with the aid of electrical scanning and control means (24, 43 to 52) and wound onto the store (62) in such a length that the strip stock, which during the welding is drawn from the wound state into the further processing or treatment plant (processing plant), is sufficient to allow for continuous further operation during the welding process, characterised in that the mean winding diameter of the finite rolled strip length wound onto a stock coil (23) is increased in that the rolled strip is unwound from the stock coil (23) onto a storage coil (62), which concentrically surrounds the stock coil (23) and which has a larger mean winding diameter, and in that during the unwinding of the strip stored on the storage coil (62) for the processing of said strip, the clamping and welding devices (12, 16), which are arranged in the annular space between the outer diameter of the stock coil (23) and the inner diameter of the storage coil (62) and which are stationary relative to the storage coil (62) for the duration of the welding, weld the strip end of the storage coil to the strip beginning of the stock coil.
2. A method according to claim 1, characterised in that when a two-part storage coil is used having a main storage coil (62) which can be wound onto the outside of a rotatable roller ring (9) and an auxiliary storage coil (92) which is arranged between the main storage coil and the stock coil (23) concentric to the former and which is securely connected to the clamping and welding device, for welding two strips with the clamping and welding device (12, 16) inoperative, the strip is firstly wound from the stock coil (23) through the slot of an auxiliary cylinder (80) as a main storage coil (62) onto the roller ring (9) rotating in synchronism with the auxiliary cylinder and then one section of the stored strip is supplied from the main storage coil to the further processing or treatment plant and the other section is wound onto the auxiliary storage coil (92), which is stationary during the welding process and for the insertion of the subsequent stock coil (23) is then unwound and supplied to the processing plant.
3. A method according to claim 1, characterised in that
after the insertion of the stock coil (23), the beginning of its strip winding is introduced with the aid of the coil drive (10) into the guide means of the clamping and welding device (12, 16) until it is grasped by the latter's draw-in drive rollers (35),
the latter then supply the rolled strip through the open clamping jaws of the clamping device (16) to delivery drive rollers (38) associated therewith, which guide the strip between two rollers (2) of the rotatable roller ring (9) arranged concentrically around the stock coil towards the outside, so that the strip beginning can be supplied to the still stationary processing plant and can be grasped by the latter,
the roller ring (9) and the clamping and welding device (12, 16) mechanically connected therewith is imparted with the aid of its drive motor (25) with a rotational movement in the same direction as the direction of winding of the stock coil (23) and in the opposite direction to the direction of movement of the strip towards the processing plant, so that the strip is wound from the stock coil (23) onto the outside of the roller ring (9) as a storage coil (62) until the strip end of the storage coil (62) reaches the draw-in drive rollers (35) and the angular velocity of the roller ring (9) is then reduced until the edge of the strip end is level with the welding path
the clamping jaws (59) facing away from the draw-in side of the guide means are then closed with a simultaneous interruption of the roller drive (25),
the processing plant and the roller drive (25) are then set in operation in the direction in which the strip is drawn,
a further stock coil (23) is then introduced into the centre of the roller ring (9) and the beginning of the strip is introduced with the aid of the coil drive (10) into the guide means (54, 55) of the clamping and welding device (12, 16) until it is grasped by the latter's draw-in drive rollers (25), which guide the strip until it comes into contact with the strip end of the preceding storage coil.
then with a simultaneous interruption of the drive motor (34) of the draw-in drive roller (35), the clamping jaws (58) facing the draw-in side are closed and the drive motor (15) of a support (13) bearing the planing or milling tool (68, 69) associated with the welding device (12) in the edging direction is set in operation for the duration of one stroke,
after the completion of the stroke movement, the clamping jaws (58, 59) are pushed together to enclose the gap produced between the strips during planing or milling and the drive motor (15) of the support (13) driving the welding device (12) in the edging direction is set in operation for the duration of a welding stroke,
at the end of the welding process, the clamping jaws (58, 59) are opened and the direction of rotation of the roller ring (9) is reversed,
shortly before the unwinding of the stock coil (23) is completed, the drive motor (25) of the roller ring (9) is firstly switched off and then switched on again in the opposite direction of rotation and its rotational speed is thereby controlled in such a manner that the strip beginning of the storage coil (62) slowly runs through the opened clamping device (16) until the edge of the strip end is level with the welding path, whereupon the clamping jaws (59) facing away from the draw-in side close with a simultaneous adaptation of the angular velocity of the roller drive motor (25) to the transportation velocity of the strip,
after the insertion of a new stock coil (23), whose strip beginning is again introduced with the aid of the coil drive motor (10) via the guide means (54, 55) of the clamping and welding device (12, 16) into the clamping and welding device (12, 16) until it is grasped by the latter's draw-in rollers (35), which guide the strip beginning further until it comes into contact with the strip end of the preceding storage coil,
after completion of the welding process, the clamping jaws (58, 59) are opened and the drive motor (25) of the roller ring (9) is set in operation in the original direction of rotation until shortly before completion of the unwinding of the storage coil (23) and
this procedure is repeated after each insertion of a new stock coil (23).
4. A method according to claim 1, characterised in that
after the insertion of the stock coil (23), the beginning of the strip winding is introduced by the coil drive into the guide means (54, 55) of the clamping and welding device (12, 16) until the strip beginning is grasped by the latter's up-take drive rollers (35),
the latter then supply the rolled strip through the opened clamping jaws (58, 59) of the clamping and welding device (12, 16) to the latter's delivery drive roller (38), which guides the strip between two rollers (2) of the stationary roller ring (9) towards the outside, so that the strip beginning can be supplied to the still stationary processing plant and can be grasped by the latter,
meanwhile, the clamping and welding device (12, 16) is imparted with the aid of its drive motor (25) with a rotational movement in the same direction as the direction of winding of the stock coil (23) and the direction of movement of the strip towards the processing plant and the strip is pressed with the aid of the motor-driven delivery drive roller (38) as a storage coil against the inside of the rollers (2) of the roller ring (9) and is layered here until the strip end of the storage coil (23) reaches the driver roller (38) and the rotational movement is retarded until the strip end lies in the welding path,
the clamping jaws (39) facing away from the draw-in side of the guide means are then closed with a simultaneous interruption of the drive motor (25) of the clamping and welding device (12, 16),
the processing plant and the drive motor (25) of the clamping and welding device (12, 16) are then set in operation in the opposite direction to the movement of the strip,
after the positioning of a further stock coil on the mandrel (11), the former's strip beginning is again introduced with the aid of the coil drive (10) into the guide means (54, 55) of the clamping and welding device (12, 16) until it is grasped by the latter's draw-in drive roller (35), which guides the strip beginning until it comes into contact with the strip end of the preceding storage coil,
then, with a simultaneous interruption of the drive motor (34) of the draw-in drive roller (35), the clamping jaws (59) facing the draw-in side are closed and the drive motor (15) of a support (13) bearing the planing or milling tool (68) associated with the welding device (12) in the edging direction is set in operation for the duration of one stroke,
after completion of the stroke movement, the clamping jaws (58, 59) are pushed together to enclose the gap produced between the strips during planning or milling and the drive motor of the support (13) driving the welding device (12) in the edging direction is set in operation for the duration of a welding stroke,
after completion of the welding process, the clamping jaws (58, 59) are opened and the rotational movement of the drive motor (15) of the clamping and welding device (12, 16) is retarded and then reversed,
shortly before the unwinding of the stock coil (23) is completed the drive motor (15) of the clamping and welding device (12, 16) is firstly retarded and then further operated in the opposite direction, its angular velocity being controlled in such a manner that the strip end of the stock coil (23) slowly passes through the open clamping device (16) until the edge of the strip end is level with the welding path, the clamping jaws (59) facing away from the draw-in side subsequently closing with a simultaneous adaptation of the angular velocity of the clamping and welding device (12, 16) to the delivery velocity of the strip,
after the positioning of a new stock coil (23) on the mandrel (11), the former's strip beginning is again introduced with the aid of the coil drive (10) via the guide means (54, 55) of the clamping and welding device (35) into the clamping and welding device (12, 16) until it is grasped by the latter's draw-in drive roller (35), which guides the strip beginning until it comes into contact with the strip end of the preceding storage coil,
after completion of the welding process, the clamping jaws (58, 59) are opened and the drive motor (25) of the clamping and welding device (12, 16) is set in operation in the reverse direction of rotation and the latter's delivery drive roller (38) is set in operation until shortly before completion of the unwinding of the stock coil (23) and
this procedure is repeated after each positioning of a new stock coil (23).
5. A method according to claim 2, characterised in that
after the insertion of the stock coil (23), the beginning of its strip winding is introduced with the aid of the coil drive (10) into the guide means (54, 55) of the clamping and welding device (12, 16) until the strip beginning is grasped by the latter's draw-in drive rollers (35),
the latter then supply the rolled strip, through the open clamping jaws (58, 59) of the clamping device (16) to the delivery drive rollers (38, 60), which guide the strip through the slot of an auxiliary drum (80), which is securely connected with the clamping and welding device (12, 16) and which is arranged concentrically around the stock coil (23), between two rollers (2) of the roller ring (9) arranged concentrically around the auxiliary drum of the storage drum towards the outside, so that the strip beginning can be supplied to the still stationary processing plant and can be grasped by the latter,
the roller ring (9) of the storage drum is coupled with the auxiliary drum (80) and is imparted with the aid of the drive motor (57) with a rotational movement in the same direction as the direction of winding of the stock coil (23) and in the opposite direction to the direction of travel of the strip towards the processing plant, so that the strip is wound from the stock coil (23) onto the outside of the roller ring (9) of the storage drum as a storage coil (62) until the strip end of the storage coil (62) reaches the draw-in drive rollers (35, 56) and the angular velocity of the roller ring (9) is then reduced until the edge of the strip end is level with the welding path,
the clamping jaws (59) facing away from the draw-in side of the guide means are then closed with simultaneous interruption of the roller drive (25),
the processing plant and the roller drive (25) are then set in operation in the drawing direction of the strip with a simultaneous uncoupling of the roller drive (25) from the auxiliary drum (80), with the auxiliary drum stationary, so that one section of the storage coil (62) is supplied to the processing plant and the other section is wound onto the outer casing of the auxiliary drum (80),
a further stock coil (23) is then introduced and the strip beginning is introduced with the aid of the coil drive (10) into the guide means (54, 55) of the clamping and welding device (12, 16) until it is grasped by the latter's draw-in drive rollers (35, 56), which guide it until it comes into contact with the strip end of the preceding storage coil,
then, with a simultaneous interruption of the drive motor (54) of the draw-in drive roller (35), the clamping jaws (58) facing the draw-in side are closed and the drive motor (15) of the support (13) driving the planing and milling tool (68) associated with the welding device (12) in the edging direction is set in operation for the duration of one stroke.
after completion of the stroke movement, the clamping jaws (58, 59) are pushed together to enclose the gap produced between the strips during planing and milling and the drive motor of the support (13) driving the welding device (12) in the edging direction is set in operation for the duration of the welding stroke,
the clamping jaws (58, 59) are opened after completion of the welding process,
after completion of the unwinding of the stock of the roller ring (9) onto the auxiliary drum (80), the direction of rotation of the drive motor (87) of the roller ring (9) is set in operation in the opposite direction so as to unwind the strip stock arranged on the auxiliary drum (80),
after the unwinding of the strip stock on the auxiliary drum (80), the roller ring (9) and the auxiliary drum (80) are again coupled with one another and their drive is set in operation in the opposite direction for the formation of a new storage coil,
shortly before completion of the unwinding of the storage coil, the drive motor (87) of the roller ring (9) and the drive motor (87) of the auxiliary drum (80) are switched off, the auxiliary drum (80) is uncoupled from the roller ring (80) and stopped,
the drive motor (97) of the roller ring (9) is then set in operation again in the reverse direction and its rotational speed is controlled in such a manner that the strip end of the storage coil slowly runs through the open clamping device (16) until the edge of the strip end is level with the welding seam, the clamping jaws (59) facing away from the draw-in side then closing with a simultaneous adaptation of the angular velocity of the roller drive to the transportation velocity of the strip,
after the introduction of a new stock coil (23), whose strip beginning is again introduced with the aid of the coil drive (10) via the guide means (54, 55) of the clamping and welding device (12, 16) into the clamping and welding device (12, 16) until it is grasped by the latter's draw-in drive rollers (35), which guide the strip beginning until it comes into contact with the strip end of the preceding storage coil,
after completion of the welding process the clamping jaws (58, 59) are opened and the drive motor (87) of the roller ring (9) is set in operation in the original direction of rotation shortly before completion of the unwinding of the storage coil and
this procedure is repeated after each positioning of a new stock coil (23).
6. A device for welding rolled strips of finite lengths to form continuous strips during the manufacturing or treatment process, comprising a clamping and welding device (12, 16) for welding the end of a preceding finite strip length with the beginning of a subsequent finite strip length, and comprising electrical scanning and control means (24 ; 43 to 52), by means of which, prior to the commencement of welding, a section of the preceding strip is detected and wound onto the store (62) in such a length that the strip stock, which during the welding is drawn from the wound state into the further processing or treatment plant (processing plant), is sufficient to allow for continuous further operation during the welding process, characterised in that a disc- shaped retaining plate (1) and a retaining ring (3) of equal diameter are provided, between which, distributed over the peripheral circumference, the axes of rollers are secured, which rollers are horizontally rotatable about said axes, so that a roller ring is formed, and a holding mandrel (11) is arranged in a removable manner with its axis of rotation congruent to the central axis of the roller ring for receiving a rolled strip coil (23), which is mounted on said holding mandrel so as to be rotatable by a drive means (10), in that in the annular space between the roller ring and the holding mandrel (11), a clamping and welding device (12, 16) is arranged for welding the rolled strip ends of two successive rolled strips, comprising draw-in drive rollers (35, 56), delivery drive rollers (38, 60) and clamping means (58, 59) for bringing the rolled strip ends together, a planing and milling device (68, 69) which is movable in the direction of the ends for the cutting processing of the edges brought together, and a welding device (18 to 22) for welding the ends, a control computer (24) controlling the electromotive drive means for the relative rotational movement - which can be adjusted according to the direction of rotation and angular velocity - of the roller ring (1, 2), the clamping and welding device (12, 16) and/or the rolled strip coil (23) about the central axis and as a function thereof for the actuation of the clamping means (58, 59) and for the advance movement of the planing or milling device (15) and the welding device (18 to 22) as a function of the length of the rolled strip stored on the coil and the roller ring and of the rolled strip velocity predetermined by the processing plant, in such a manner that the welding of the rolled strip ends is finished before the rolled strip length stored in each case has completely run off.
7. A device according to claim 6, characterised in that the roller ring (1, 2, 3) with the clamping and welding device (12, 16) secured thereon is driven so as to be displaceable in both rotational directions and is provided with delivery drive rollers (38, 60), which guide the rolled strip which has unwound from the stock coil from the inner chamber of the roller ring between two rollers towards the outside, so that with a rotation of the roller ring in the opposite direction to the direction of travel of the rolled strip, the latter can be wound onto the outside of the roller ring as a storage coil and the roller axes are mounted so that they can be displaced radially under spring pressure or compulsorily controlled until maximum thickness of the storage coil, so that the outer diameter of the roller ring can be adapted to the winding thickness of the storage coil.
8. A device according to claim 6, characterised in that, with the roller ring (1, 2, 3) stationary, the clamping and welding device (12, 16) is driven in both rotational directions with the centre of the roller ring as the axis of rotation, so that with the aid of the delivery drive rollers (38, 60) the rolled strip unwound from the stock coil and guided between two rollers of the roller ring towards the outside is wound as a storage coil onto the inside of the rollers.
9. A device according to any one of claims 6 to 8, characterised in that a roller ring (9) mounted concentrically to the central axis of the device and comprising rollers (2), which are distributed over the peripheral circumference of said roller ring and which rotate about horizontal axes, and a holding mandrel (11), which is rotatable with the aid of a drive means (28) about the central axis, for receiving a rolled strip coil (23), which can be pushed onto said holding mandrel, are provided and the roller ring (9) is concentrically surrounded by a stationary shaping roller cage (79) having such an internal diameter that there is space for the storage coil (62) between the roller ring (9) and the roller cage (79), in that in the annular space between the holding mandrel (11) and the roller ring (9) an automatically rotatable auxiliary drum (80) is arranged concentrically to the roller ring and has such an outer diameter that an auxiliary storage coil (92) can be accommodated in the space between the auxiliary drum (80) and the roller ring (9) and a clamping and welding device (12, 16) for welding the rolled strip ends of two successive rolled strips is secured inside the auxiliary drum (80), said clamping and welding device (12, 16) comprising draw-in drive rollers (35, 36), delivery drive rollers (38, 60) and clamping means (58, 59) for guiding the rolled strip ends together a planing and milling device (68, 69), which is displaceable in the direction of said rolled strip ends for the cutting processing of the edges guided together, and a welding device (18 to 22) for welding the ends, the auxiliary drum (90) being provided with a slot for guiding through the rolled strip emerging from the clamping and welding device (12, 16), in that the roller ring (9) is driven by a drive means (87) and the auxiliary drum (80) with the clamping and welding device (12, 16) secured thereon is driven by a drive means (85) in both rotational directions and both drive means can be coupled with one another, so that whilst the rolled strip is being stored on the roller ring (9), the auxiliary drum (80) is coupled with the drive of the roller ring and during the welding process'for the take over of the stored rolled strip from the roller ring (9) onto the auxiliary drum (80) the latter is uncoupled from the drive means (87) of the roller ring (9) and can be fixed in a desired position and the delivery rollers (38, 60) guide the rolled strip unwound from the stock coil (62) through the slot in the auxiliary drum (80) and between two rollers of the roller ring (9) towards the outside, so that when the roller ring (9) and auxiliary drum (80) are coupled and are rotated in the opposite direction to the direction of travel of the rolled strip, the latter can be wound onto the outside of roller ring (9) as a storage coil (62) and the roller axes of the rollers (2) are mounted so that they can be displaced radially against spring pressure or positively controlled until maximum thickness of the storage coil (62), so that the outer diameter of the roller ring (9) can be adapted to the winding thickness of the storage coil (62), a control computer (24) controlling the electromotive drive means and/or coupling means for the drive rollers (35, 56 and 38, 60) and the relative rotational movements - which can be adjusted according to the direction of rotation and angular velocity - of the roller ring (9), auxiliary drum (80) with the clamping and welding device (12, 16) and the rolled strip coil (23) about the central axis and as a function thereof for the actuation of the clamping means (58, 59) and for the advance movement of the planing or milling device (15) and the welding device (18 to 22) as a function of the length of the rolled strip stored on the roller ring (9) and the auxiliary drum (80) and of the rolled strip velocity predetermined by the processing plant, in such a manner that the welding of the rolled strip ends is finished before the rolled strip, length stored in each case has completely run off.
10. A device according to any one of claims 6 to 9, characterised in that a laser welding device is used as the welding device, whose energy beam generator (19) is disposed outside of the device and whose energy beam (20) is guided coaxially into the inside of the device and is deflected into the welding path by deflector mirrors, the last of which can be displaced in the direction of the welding seam.
11. A device according to any one of claims 6 to 9, characterised in that an electric welding device is used as a welding device comprising two rollers as electrodes above and below the strips which are to be welded and a foil strip, which runs off the stock rollers and is supplied to the electrode rollers is arranged as a welding material between the strip and one electrode roller in each case.
EP85109708A 1984-08-17 1985-08-02 Method and arrangement for welding together the ends of rolled strips of finite lengths to form a strip of an infinite length during further processing of the strip Expired EP0175886B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109708T ATE48098T1 (en) 1984-08-17 1985-08-02 METHOD AND ARRANGEMENT FOR WELDING ROLLING STRIPS OF FINITE LENGTH TO ENDLESS STRIPS DURING THE FURTHER PROCESSING PROCESS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843430209 DE3430209A1 (en) 1984-08-17 1984-08-17 METHOD AND ARRANGEMENT FOR WELDING ROLLING TAPES IN FINAL LENGTH TO ENDLESS TAPES DURING THE PROCESSING PROCESS
DE3430209 1984-08-17

Publications (2)

Publication Number Publication Date
EP0175886A1 EP0175886A1 (en) 1986-04-02
EP0175886B1 true EP0175886B1 (en) 1989-11-23

Family

ID=6243222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109708A Expired EP0175886B1 (en) 1984-08-17 1985-08-02 Method and arrangement for welding together the ends of rolled strips of finite lengths to form a strip of an infinite length during further processing of the strip

Country Status (6)

Country Link
US (1) US4626655A (en)
EP (1) EP0175886B1 (en)
JP (1) JPS6156733A (en)
AT (1) ATE48098T1 (en)
DD (1) DD238957A5 (en)
DE (2) DE3430209A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863091A (en) * 1987-03-18 1989-09-05 Quality Tubing, Inc. Method and apparatus for producing continuous lengths of coilable tubing
US4895011A (en) * 1989-03-20 1990-01-23 Ceeco Machinery Mfg. Co. Inc., Ltd. Continuously balanced apparatus for storing and dispensing elongate materials
DE4111431C2 (en) * 1991-04-09 1994-09-22 Hymmen Theodor Gmbh Method and device for producing endless steel strips
US5636811A (en) * 1995-02-17 1997-06-10 Crowther; David Strapping reclaimer
US5992726A (en) * 1998-01-08 1999-11-30 Iron Bay Apparatus and method for setting welding run-off tabs in a coil end joiner
US6244494B1 (en) 1999-06-11 2001-06-12 Iron Bay, Inc. Apparatus and method for leveling the clamping surface to provide proper heat sink for narrow strips in coil end joiner
US6824230B2 (en) 2001-09-12 2004-11-30 O'sullivan Industries, Inc. Corner computer workcenter
CN116692556B (en) * 2023-07-19 2024-05-10 索罗曼(广州)新材料有限公司 Titanium flat bar winding method and device

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US2892921A (en) * 1959-06-30 Method of and apparatus for edge welding sheet material
US2066569A (en) * 1935-10-29 1937-01-05 Robert E Kinkead Means and method for welding strips end to end
DE946864C (en) * 1954-05-10 1956-08-09 Huettenwerke Ilsede Peine Ag Device for joining a large number of red hot rolling bars
US2919343A (en) * 1958-03-20 1959-12-29 Magnetic Heating Corp Welding of strips
US3310255A (en) * 1964-11-09 1967-03-21 Sendzimir Inc T Spiral looper
US3782662A (en) * 1971-02-24 1974-01-01 Armco Steel Corp Simplified strip accumulation
JPS51137637A (en) * 1975-05-23 1976-11-27 Ishikawajima Harima Heavy Ind Method and device for butt welding
DE2546585C3 (en) * 1975-10-17 1981-04-16 Varta Batterie Ag, 3000 Hannover Process for the production of galvanic elements with negative electrodes made of lithium or calcium
DE2934115C2 (en) * 1979-08-23 1981-10-22 Angerer, Klaus, 8551 Röttenbach Method and device for storing endless metal strips from finite lengths of rolled strip
US4288042A (en) * 1979-09-11 1981-09-08 Tadeusz Sendzimir Variable capacity strip accumulator rotatable on a horizontal axis
DE3005610A1 (en) * 1980-02-15 1981-08-20 Klaus 8551 Röttenbach Angerer METHOD AND DEVICE FOR FULLY CONTINUOUS OPERATION OF ROLLING MILLS AND / OR TREATMENT LINES
DE3230595A1 (en) * 1982-08-17 1984-02-23 Siemens AG, 1000 Berlin und 8000 München METHOD FOR WELDING ENDLESS METAL TAPES
JPH0218644A (en) * 1988-07-06 1990-01-22 Hokuriku Nippon Denki Software Kk Cache memory control system

Also Published As

Publication number Publication date
US4626655A (en) 1986-12-02
DD238957A5 (en) 1986-09-10
ATE48098T1 (en) 1989-12-15
DE3574347D1 (en) 1989-12-28
DE3430209A1 (en) 1986-02-27
EP0175886A1 (en) 1986-04-02
JPS6156733A (en) 1986-03-22

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