EP0083741B1 - Method and apparatus for making a corrugated structure - Google Patents

Method and apparatus for making a corrugated structure Download PDF

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Publication number
EP0083741B1
EP0083741B1 EP82111389A EP82111389A EP0083741B1 EP 0083741 B1 EP0083741 B1 EP 0083741B1 EP 82111389 A EP82111389 A EP 82111389A EP 82111389 A EP82111389 A EP 82111389A EP 0083741 B1 EP0083741 B1 EP 0083741B1
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EP
European Patent Office
Prior art keywords
web
pressing means
backing
backing web
pressing
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
EP82111389A
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German (de)
French (fr)
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EP0083741A1 (en
Inventor
Otto J. Hofer
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Individual
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Individual
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Priority to AT82111389T priority Critical patent/ATE18370T1/en
Publication of EP0083741A1 publication Critical patent/EP0083741A1/en
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Publication of EP0083741B1 publication Critical patent/EP0083741B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/29—Making webs in which the channel of each corrugation is transverse to the web feed by making use of rods, e.g. co-operating with a toothed cylinder combined with uniting the corrugated web to flat webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/247—Making webs in which the channel of each corrugation is transverse to the web feed by reciprocating members

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 8.
  • Such methods and devices are generally known and customary and are used in the packaging industry for the production of packaging inserts, but also for the production of decorative elements.
  • a method has become known from US-A-3402092 Wiesinger, in which support elements are glued onto a carrier web at regular intervals transversely to the web direction.
  • the carrier web prepared in this way passes a molding station in cycles, at which an upper web is fed from above.
  • Two pressure devices which can be lowered from above, press the top web over the support elements and onto the carrier web, a connection taking place.
  • the two pressure devices are resiliently connected to one another in such a way that first the first and then the second pressure device touches the top web.
  • the support elements remain on the shaft part between the carrier web and the top web, which is obviously a serious disadvantage.
  • the production of the shaft parts becomes complicated and cumbersome because the support elements have to be glued on with a separate device.
  • the shaft parts themselves become too heavy and, due to the complicated manufacturing process, also too expensive. Changing the shaft configuration and the shaft spacing is practically impossible.
  • a manufacturing method for shaft parts has become known in which deformation elements are introduced between the carrier web and the top web, which can be removed again after the deformation of the top web.
  • the top web is deformed using a toothed roller. Before the feed opening of the toothed roller, the deformation elements are placed on the carrier web by hand or with mechanical means not described in detail. The toothed roller deforms the top web around the deformation elements which have to be pulled out again after leaving the toothed roller. Obviously, an efficient production of an endless shaft part is not possible in this way. In addition, holding the deformation elements running along with the two tracks is likely to present considerable difficulties.
  • Another object of the invention is to make the conversion of the production to shaft parts of a different configuration as simple as possible.
  • this object is achieved by a method which has the features of claim 1.
  • the deformation element that can be inserted and retracted laterally on a plane transverse to the feed direction of the two webs solves the difficult problem of deformation of the top web in the simplest way.
  • the deformation takes place directly on the spot above the carrier web, without deformation elements having to be placed or glued to the carrier web in front of the forming station.
  • first the first pressure device and then the second pressure device touches the top web. This causes the upper web to be bent cleanly around the inserted deformation element.
  • the second pressure device is only raised after the first pressure device, so that the upper web is held in place while the deformation element is being pulled back. In this way it is prevented that tensile stresses originating from the inclined upper web can tear open the newly formed shaft.
  • the method according to the invention can be implemented in a particularly simple manner in that both the deformation element and also a first pressure device located behind the deformation element in the feed direction are shifted into their working position, in which the deformation element is located between the carrier web and the top web and the first pressure device counteracts the top web the carrier web presses, and then a second pressure device lying in front of the deformation element in the feed direction is pressed against the top web in such a way that it is stretched or folded over the deformation element and pressed against the carrier web and thereby in each case in at least a section of the pressure area of the deformation elements with the Carrier web is connected.
  • the top web automatically adapts to the length of the feed steps, the configuration of the deformation element and the pressure devices due to the course of the deformation process and can be easily pulled off a roll.
  • the deformation element is first introduced between the top web and the carrier web and, at the same time, the first pressure device is pressed against the top web and the deformation element. This ensures crease-free deformation and in particular also allows the upper web to be deformed in accordance with the surface configuration of the deformation element and pressure devices.
  • the process cycle can be further shortened if each connection point between the top web and the carrier web is acted upon by both the first pressure device and the second pressure device, and if the connection between the top web and the bottom web takes place during the pressing of both pressure devices.
  • This enables z. B. the provisional connection of top web and carrier web in the area of the first pressure device and the subsequent permanent connection in the area of the second pressure device. Since the connection process is particularly time-consuming both when using adhesive or other drying or heat-curing or, in the general way, physically or chemically activatable connection media, as well as with welding processes or similar measures, the time required for each pressing or connection process can be shortened in many cases. In addition, this ensures according to the invention that more time is available for the pressing and connecting process under the first pressing device, since the first pressing device is pressed against the upper web in front of the second pressing device.
  • the connection of top web and carrier web can be carried out very particularly advantageously if a heat-activatable medium is used to produce the connection and if the carrier web and / or top web are heated in the area of the pressing devices during the pressing process.
  • a heat-activatable medium such as. B. thermoplastic adhesives and the like, can either be applied to the carrier web and / or top web during the advance of these, or are already on at least one of the webs. All that is required to connect the top web and carrier web is heating in the region of at least one pressure device. If heating takes place in the area of both pressure devices, it is evident that with the first pressure device a general heating of the adhesive and a provisional connection can be achieved, while in the area of the second pressure device the complete plasticization and permanent connection takes place.
  • stamped connections other folded connections or positive connections and connections with mechanical connecting elements can also be used.
  • Different waveforms can be produced in the simplest way on one and the same shaft part by the invention if the feed step length of a feed step is changed compared to a previous feed step.
  • the adaptation of the upper part or the upper track to the changed configuration takes place automatically.
  • Shaft parts with different wave shapes can also be produced if the surface configuration of the deformation element is changed in at least one deformation step compared to the shape during a preceding deformation step. This can be done e.g. B. achieve that multi-part deformation elements are used, or that different deformation elements are provided, which can be introduced alternately between the top web and carrier web.
  • a deformation of the top web is to be achieved laterally on the deformation element or on the deformation element, this can be achieved particularly simply by pressing the pressure device laterally against the deformation element and / or onto the deformation element. In this way, practically any surface configurations of the top web can be produced.
  • top web is provided with waves or deformations of different heights and / or surface configurations in the transverse direction. This allows the use of the shaft part for packaging parts of different shapes.
  • the invention can be implemented particularly simply by means of a device which has the features in the characterizing part of claim 8. Since the deformation element is an integral part of the device, it can be guided and moved precisely, so that precise wave formation is ensured even when the carrier web is advanced rapidly.
  • the pressure devices which can be activated independently of one another enable the two pressure devices to be set down or withdrawn in the reverse order in each case. This enables the top web to be deformed in an optimally clean manner and protects the newly formed shafts from destruction, in particular caused by frictional forces when the deformation element is pulled back or by tension in the obliquely fed top web.
  • the laterally insertable deformation elements can be changed in an optimally simple manner to produce different shaft part configurations. Because the molding device with the pressure devices lies above the deformation element, the shaping can be carried out on or above the deformation element and the pressing or connecting process of the upper web and carrier web can be achieved.
  • the cyclical control of the pressure devices, the feed arrangement and the deformation element means no difficulties for the person skilled in the art.
  • the sequence control can be mechanical or can be implemented electronically and also hydraulically or pneumatically in a manner known per se.
  • the adjustment of the forming station can be accomplished particularly easily if the feed device has a drive device with an arrangement for the stepless adjustment of the feed path of the feed device. In this way, the feed path of a feed step can be adapted as desired to the configuration of the deformation element.
  • the practical implementation of the invention is particularly simple if the feed device has a holding device for holding the carrier web during the feed movement.
  • the feed device can carry out a simple lifting movement with a front and a rear detent position, the helte device for holding and transporting the carrier web being engaged only during the feed movement, but disengaging in the front detent position, so that the reverse stroke done empty.
  • the latching positions can limit the forward and backward stroke, respectively, and allow the upper web to be deformed and the upper web and carrier web to be connected at the forming station.
  • Both the stroke setting and the formation of sufficient locking positions can be achieved particularly advantageously if a six-link coupling gear with two locking positions is used.
  • the control and adjustment of the feed device can also be designed according to the invention in a particularly finely adjustable and adjustable manner if the drive device has a stepper motor drive with an adjustable pulse number and / or pulse length.
  • the use of the stepper motor has the great advantage that, in a manner known per se, both the feed speed and the feed stroke and the duration of the detent positions can be regulated practically indefinitely.
  • Shaft parts with a different configuration in the transverse direction can be produced particularly easily if at least one of the pressure devices is divided into at least two differently shaped sections and / or at least one of the pressure devices is divided into two approximately adjacent pressure elements with different shapes, and if the deformation element accordingly is divided in the transverse direction into at least two differently shaped sections.
  • z. B. generate shaft parts in which the waves taper or widen in the transverse direction or are divided into gradually increasing or decreasing sections.
  • the adaptability to different wave forms can be further improved if two deformation elements that can be inserted from both sides between the upper web and the carrier web are provided. This also increases the cycle speed, since in this case the deformation elements only have to be inserted half way from both sides.
  • an upper web 2 is connected to a carrier web 3 on a forming station 1.
  • the individual process steps I to VI run as follows: During step I, a first pressure device 4 and a second pressure device 5 are in their working position, in which they press the top web 2 against the carrier web 3 and at the same time bring about the connection of the two webs .
  • An adhesive (not shown) is applied to the carrier web 3, which establishes the connection during the pressing process.
  • a deformation element 6 is located in its working position between the first pressure device 4 and the second pressure device 5 in such a way that the upper web 2 is stretched over the deformation element 6 in a wave-like manner.
  • a lateral stamp 7 presses against the upper web 2 and the second pressing device 5 and thereby causes the upper web 2 to be folded cleanly over the deformation element 6.
  • Method step 11 shows how first the first pressure device 4 is brought out of engagement with the upper web 2 and then the deformation element 6 is laterally withdrawn from the closed shaft section.
  • Method step III shows how the stamp 7 is then also withdrawn, the second pressure device 5 is brought out of engagement with the upper web 2 and at the same time the carrier web 3 by one step further, i. H. is promoted to the right in the drawing.
  • Method step IV shows how the deformation element 6 is then shifted again between the carrier web 3 and the top web 2, and then the first pressing device 4 is pressed into the shaft section in which the second pressing device 5 was located in the previous working step.
  • This double use of a pressure device at the same connection point ensures that, on the one hand, the top web 2 is pressed and held firmly against the carrier web 3, so that during the subsequent intervention of the second pressure device 5 during the method steps V and VI, the top web 2 is held and via the Deformation element 6 can be tensioned without loosening an already established connection of top web 2 and carrier web 3.
  • the double pressure causes an improved connection of the carrier web 3 and the top web 2.
  • Method step V shows how the top web 2 is stretched over the deformation element 6 and thereby deformed.
  • Method step VI shows, analogous to method step I, the pressing and connecting of top web 2 and carrier web 3 by the second pressing device 5. Obviously, the top web 2 is automatically retightened while the carrier web 3 is being advanced, without any special conveying having to take place.
  • the upper web 3 can be pulled off a roll in a manner known per se, the material being able to be guided in loops or over dancer rolls and the like in order to avoid jerky tensile loads during the advance.
  • Figure 2 shows the two pressure devices 4 and 5 on an enlarged scale.
  • the side bevel shown in the drawing allows unimpeded supply of the upper web 2 past the second pressure device 5.
  • the pressure devices 4 and 5 are fastened to two hydraulic press arrangements 10, 11 by means of push rods 8, which in turn are arranged on a frame 9.
  • the molding station 1 lies vertically under the pressure devices 4 and 5 and has a deformation table 12 which is provided with a heating arrangement 13 in the region of the deformation element 6.
  • a motor 14 is provided for laterally displacing the deformation element 6.
  • a feed device 15 with a drive device 16 and a gripper 17 is provided on the forming station 1 in order to convey the carrier web 3 step by step according to FIG. 1 on the forming station 1.
  • a sequence control device 18 is provided which issues the corresponding control commands in the order of the method steps according to FIG. 1 via control lines 19.
  • Such sequence control devices for controlling press arrangements, for. B. via corresponding valves or motors via appropriate switching devices are generally known and do not require further explanation here.
  • the feed device is driven by means of a stepper motor drive which has a pulse generator 21 and a stepper motor 22.
  • the pulse duration and the pulse frequency of the pulse generator 21 are adjustable in a manner known per se, so that both the lifting speed and the stroke length can be set during a feed step of the grippers 17.
  • the feed of the carrier web 3 can be adjusted and adapted as desired.
  • the grippers 17 are pivoted against the carrier web 3 during the forward stroke, so that they grip it and convey it forward.
  • the grippers 17 are lifted off the carrier web 3, so that they are withdrawn empty during the reverse stroke.
  • the Ver pivot the gripper 17 by a magnet arrangement, not shown. Accordingly, during the reverse stroke, the carrier web 3 remains in the feed position last reached, the process sequence according to FIG. 1 taking place.
  • Figure 6 shows two pressure devices 4 and 5 and a deformation element 6 for producing a shaft part with a modified configuration. It is evident that the upper web 2 is not only stretched over the deformation element 6, but is pressed against it by the pressure devices 4 and 5. In this way, the shape shown can be achieved without difficulty.
  • FIG. 7 shows an arrangement with three pressure devices 4, 4a and 5.
  • the first pressure device 4 is first brought into its engaged position. Sodanri is followed by the additional pressure device 4a, which presses the upper web 2 against the deformation element 6. This ensures that the desired formation of edges 23 is achieved and at the same time prevents the upper web from wrinkling, as could be the case if the second pressure device 5 were lowered in front of the additional pressure device 4a. Otherwise, the deformation in the exemplary embodiment according to FIG. 7 proceeds analogously to the process sequence shown in FIG. 1.
  • FIG. 8 shows a modified exemplary embodiment in which the additional pressure device 4a is mechanically connected to the pressure device 5. Nevertheless, the same sequence as in the embodiment according to FIG. 7 also takes place in the embodiment according to FIG. 8. This means that first the first pressure device 4 engages, and then during the downward movement the additional pressure device 4a is pressed against the upper web 2 or the deformation element 6 and that only then does the second pressure device 5 engage.
  • the additional pressure device 4a is mounted on the second pressure device 5 so as to be longitudinally displaceable and is pressed into a lower position by a spring 24, so that the additional pressure device 4a in this deep position first onto the top web 2 or the deformation element 6 presses and then during the further lowering of the second pressing device 5 against the force of the spring 24 is displaced relative to the second pressing device 5.
  • FIG. 9 shows a modified exemplary embodiment, in which the deformation element 6 is provided with a lateral recess 25 in order to achieve a corresponding configuration of the shaft part.
  • the first pressure device 4 is first pressed against the upper web 2 or the deformation element 6.
  • the second pressure device 5 is then lowered and laterally displaced by the stamp 7 and pressed into the depression 25 of the deformation element 6.
  • any side surface configurations of the shaft part can be shaped in the simplest way.
  • FIGS. 10 and 11 a shaft part with shaft sections of different heights is produced.
  • the deformation element 6 is subdivided and has an upper section 6a.
  • FIG. 10 shows a pressing process in which only the lower part of the deformation element 6 is engaged and a lower section of the shaft part is formed accordingly.
  • the upper section 6a of the deformation element 6 is also inserted between the upper web 2 and the carrier web 3, so that a higher shaft part is produced.
  • the introduction of the deformation element 6 with or without the upper section 6a can be controlled in any order by appropriately designing the sequence control device 18 (FIG. 4).
  • FIG. 12 shows a carrier web 3 which is provided with two strips 26 of a thermoplastic adhesive.
  • the carrier web 3 is heated in the area of the heating arrangement 13, which is designed as an electrical resistance heater, so that the adhesive strips 26 are softened and activated.
  • the connection between the carrier web and the top web can be achieved by simple pressing by means of the pressure devices 4 and 5.
  • the heating arrangement 13 is located in the area of both pressure devices 4 and 5, so that the heating of the carrier web 3 in the area of the first pressure device can take place for a relatively short period of time, which leads to a provisional connection of the upper web 2 and carrier web 3 is sufficient. If the still heated carrier web 3 is then transported further in the subsequent method step (FIG. 1) in such a way that the shaft section located under the second pressing device 5 during the first step passes under the first pressing device 4, the still heated connection point of the upper web 2 and carrier web 3 becomes again pressed together, which then ensures a permanent connection.
  • FIG. 13 shows a carrier web 3 which is provided with a continuous coating 27 made of thermoplastic material.
  • the coating 27 serves on the one hand to protect the surface of the carrier web 3, which thereby becomes insensitive to water and moisture. At the same time, however, softening in the area of the connection point with the upper web 2 is achieved by heating by means of the heating arrangement 13 and permanent connection is made possible by pressing on by means of the pressure devices 4 and 5.
  • Figure 14 shows an embodiment, at which the top web 2 consists entirely of thermoplastic material.
  • the connection to the carrier web 3 is achieved by softening in the area of the heating arrangement 13 or the pressure devices 4 and 5.
  • FIG. 15 shows an exemplary embodiment of a shaft part, in which the feed steps of successive sections of the shaft part are enlarged in a ratio of 1: 2 by appropriate actuation of the feed device 15.
  • the shaft part can thus be optimally adapted to the needs of the parts to be packaged.
  • FIG. 16 shows an exemplary embodiment in which two top webs 2a and 2b are arranged on a carrier web 3.
  • the configuration formed by the top web 2a corresponds to the exemplary embodiment according to FIG. 7 and the deformation element 6c and a first pair of pressure devices 4, 5 (not shown) are designed as shown there.
  • the configuration formed by the upper web 2b corresponds to the shaft part according to FIG. 1 and the deformation element 6d and a second pair of pressure devices 4, 5 (not shown) are designed accordingly.
  • both two deformation elements 6c and 6d which can be inserted from opposite sides, and two adjacent pairs of pressure devices 4, 5 are provided for carrying out the deformation process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)
  • Laminated Bodies (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

1. A process for the continuous production of a corrugated member comprising a backing web (3) and a top web (2) which is arranged in a corrugated configuration on the backing web (3), wherein the top web is connected at connecting locations in the region of the depressions which extend transversely with respect to the direction of the web, by the backing web (3) being moved cyclically forwards relative to a shaping station (1) and the top web (2) which is to be connected to the backing web (3) being supplied from a feed means, and by the top web being deformed at the shaping station (1) by means of first and second pressing means (4, 5), over a deforming element (6) disposed between the two webs, and being pressed against the backing web (3) at the connecting locations, characterized in that at the shaping station (1), during a rest phase, a deforming element (6) is inserted laterally between the backing web (3) and the top web (2), that the first pressing means (4) which is downstream of the deforming element (6) in the direction of advance movement is lowered and then the second pressing means (5) which is upstream of the deforming element (6) in the direction of advance movement is lowered, in which operation the top web (2) is deformed and connected to the backing web (3), that the first pressing means (4) is raised and the deforming element (6) is withdrawn laterally, and that then the second pressing means (5) is raised and the backing web (3) is moved on by an advance step, and then the operation at the station begins afresh.

Description

Die Erfindung betrifft ein Verfahren gemäss dem Oberbegriff von Anspruch 1 und eine Vorrichtung gemäss dem Oberbegriff von Anspruch 8. Derartige Verfahren und Vorrichtungen sind allgemein bekannt und gebräuchlich und werden in der Verpackungsindustrie zum Herstellen von Verpackungseinlagen, aber auch für die Herstellung dekorativer Elemente eingesetzt.The invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 8. Such methods and devices are generally known and customary and are used in the packaging industry for the production of packaging inserts, but also for the production of decorative elements.

Durch die US-A-3402092 Wiesinger ist ein Verfahren bekannt geworden, bei dem auf eine Trägerbahn in regelmässigen Abständen quer zur Bahnrichtung Stützelemente aufgeklebt werden. Die derart vorbereitete Trägerbahn passiert taktweise eine Formstation, an der von oben her eine Oberbahn zugeführt wird. Zwei von oben her absenkbare Andruckvorrichtungen pressen die Oberbahn über die Stützelemente und auf die Trägerbahn, wobei eine Verbindung stattfindet. Die beiden Andruckvorrichtungen sind derart federnd miteinander verbunden, dass zuerst die erste und dann die zweite Andruckvorrichtung die Oberbahn berührt. Die Stützelemente verbleiben am Wellenteil zwischen der Trägerbahn und der Oberbahn, was ersichtlicherweise einen schwerwiegenden Nachteil darstellt. Die Herstellung der Wellenteile wird kompliziert und schwerfällig, da die Stützelemente mit einer separaten Vorrichtung aufgeleimt werden müssen. Die Wellenteile selbst werden zu schwer, und, bedingt durch das komplizierte Herstellungsverfahren, auch zu kostspielig. Eine Änderung der Wellenkonfiguration und der Wellenabstände ist praktisch unmöglich.A method has become known from US-A-3402092 Wiesinger, in which support elements are glued onto a carrier web at regular intervals transversely to the web direction. The carrier web prepared in this way passes a molding station in cycles, at which an upper web is fed from above. Two pressure devices, which can be lowered from above, press the top web over the support elements and onto the carrier web, a connection taking place. The two pressure devices are resiliently connected to one another in such a way that first the first and then the second pressure device touches the top web. The support elements remain on the shaft part between the carrier web and the top web, which is obviously a serious disadvantage. The production of the shaft parts becomes complicated and cumbersome because the support elements have to be glued on with a separate device. The shaft parts themselves become too heavy and, due to the complicated manufacturing process, also too expensive. Changing the shaft configuration and the shaft spacing is practically impossible.

Durch die FR-A-1 140649 Imperial Chemical Industries Ltd. ist ein Herstellungsverfahren für Wellenteile bekannt geworden, bei dem Verformungselemente zwischen die Trägerbahn und die Oberbahn eingebracht werden, welche nach der Deformation der Oberbahn wieder entfernt werden können. Bei einem Ausführungsbeispiel für die kontinuierliche Fertigung erfolgt die Deformation der Oberbahn mit Hilfe einer Zahnwalze. Vor der Einzugöffnung der Zahnwalze werden die Verformungselemente von Hand oder mit nicht näher beschriebenen mechanischen Mitteln auf die Trägerbahn aufgelegt. Die Zahnwalze verformt die Oberbahn um die Verformungselemente, welche nach dem Verlassen der Zahnwalze wieder herausgezogen werden müssen. Ersichtlicherweise ist so keine rationelle Fertigung eines endlosen Wellenteils möglich. Ausserdem dürfte das Festhalten der mit den beiden Bahnen mitlaufenden Verformungselemente erhebliche Schwierigkeiten bereiten.By FR-A-1 140649 Imperial Chemical Industries Ltd. A manufacturing method for shaft parts has become known in which deformation elements are introduced between the carrier web and the top web, which can be removed again after the deformation of the top web. In one embodiment for continuous production, the top web is deformed using a toothed roller. Before the feed opening of the toothed roller, the deformation elements are placed on the carrier web by hand or with mechanical means not described in detail. The toothed roller deforms the top web around the deformation elements which have to be pulled out again after leaving the toothed roller. Obviously, an efficient production of an endless shaft part is not possible in this way. In addition, holding the deformation elements running along with the two tracks is likely to present considerable difficulties.

Es ist daher die Aufgabe der Erfindung, die Nachteile des Bekannten zu vermeiden, insbesondere also ein Verfahren und eine Vorrichtung zum Herstellen eines Wellenteils zu schaffen, bei welchem die Verfahrensschritte derart vereinfacht und rationalisiert werden, dass kontinuierlich Wellenteile praktisch beliebiger Oberflächenkonfiguration hergestellt werden können. Eine weitere Aufgabe der Erfindung besteht darin, die Umrüstung der Produktion auf Wellenteile anderer Konfiguration auf möglichst einfache Weise zu gestalten.It is therefore the object of the invention to avoid the disadvantages of the known, in particular to create a method and an apparatus for producing a shaft part, in which the method steps are simplified and rationalized in such a way that shaft parts of practically any surface configuration can be produced continuously. Another object of the invention is to make the conversion of the production to shaft parts of a different configuration as simple as possible.

Diese Aufgabe wird in verfahrensmässiger Hinsicht durch ein Verfahren gelöst, welches die Merkmale von Anspruch 1 aufweist. Das auf einer Ebene quer zur Vorschubrichtung der beiden Bahnen seitlich einsclfiebbare und wieder zurückziehbare Verformungselement löst auf einfachste Weise das schwierige Problem der Deformation der Oberbahn. Die Deformation erfolgt unmittelbar an Ort und Stelle über der Trägerbahn, ohne dass Verformungselemente vor der Formstation auf die Trägerbahn gelegt oder geklebt werden müssen. Beim Absenken der Andruckeinrichtungen berührt zuerst die erste Andruckeinrichtung und dann die zweite Andruckeinrichtung die Oberbahn. Dadurch wird ein sauberes Umbiegen der Oberbahn um das eingeschobene Verformungselement bewirkt. Dagegen wird die zweite Andruckvorrichtung erst nach der ersten Andruckeinrichtung angehoben, so dass während des Zurückziehens des Verformungselementes die Oberbahn festgehalten wird. Auf diese Weise wird verhindert, dass von der schräg zugeführten Oberbahn herrührende Zugspannungen die soeben geformte Welle wieder aufreissen können.In terms of the method, this object is achieved by a method which has the features of claim 1. The deformation element that can be inserted and retracted laterally on a plane transverse to the feed direction of the two webs solves the difficult problem of deformation of the top web in the simplest way. The deformation takes place directly on the spot above the carrier web, without deformation elements having to be placed or glued to the carrier web in front of the forming station. When lowering the pressure devices, first the first pressure device and then the second pressure device touches the top web. This causes the upper web to be bent cleanly around the inserted deformation element. In contrast, the second pressure device is only raised after the first pressure device, so that the upper web is held in place while the deformation element is being pulled back. In this way it is prevented that tensile stresses originating from the inclined upper web can tear open the newly formed shaft.

Besonders einfach lässt sich das erfindungsgemässe Verfahren dadurch realisieren, dass zunächst sowohl das Verformungselement als auch eine in Vorschubrichtung hinter dem Verformungselement liegende erste Andruckeinrichtung in ihre Arbeitsstellung verlagert werden, in welcher das Verformungselement sich zwischen Trägerbahn und Oberbahn befindet und wobei die erste Andruckeinrichtung die Oberbahn gegen die Trägerbahn drückt, und dass sodann eine zweite in Vorschubrichtung vor dem Verformungselement liegende Andruckeinrichtung derart gegen die Oberbahn gedrückt wird, dass diese über das Verformungselement gespannt bzw. gefaltet und gegen die Trägerbahn gedrückt und dabei jeweils in wenigstens einem Abschnitt des Andruckbereichs der Verformungselemente mit der Trägerbahn verbunden wird.The method according to the invention can be implemented in a particularly simple manner in that both the deformation element and also a first pressure device located behind the deformation element in the feed direction are shifted into their working position, in which the deformation element is located between the carrier web and the top web and the first pressure device counteracts the top web the carrier web presses, and then a second pressure device lying in front of the deformation element in the feed direction is pressed against the top web in such a way that it is stretched or folded over the deformation element and pressed against the carrier web and thereby in each case in at least a section of the pressure area of the deformation elements with the Carrier web is connected.

Dadurch wird insbesondere gewährleistet, dass zur Einstellung und/oder Justierung einer bestimmten Konfiguration des Wellenteils in Abhängigkeit vom Verformungselement und/oder den Andruckeinrichtungen lediglich die Länge der Vorschubschritte eingestellt werden muss. Die Oberbahn passt sich aufgrund des Ablaufs des Verformungsprozesses automatisch der Länge der Vorschubschritte, der Konfiguration des Verformungselements sowie der Andruckeinrichtungen an und kann auf einfachste Weise von einer Rolle abgezogen werden. Zweckmässigerweise wird zunächst das Verformungselement zwischen Oberbahn und Trägerbahn eingebracht und gleichzeitig die erste Andruckeinrichtung gegen Oberbahn und Verformungselement gepresst. Dies gewährleistet faltenfreie Verformung und erlaubt insbesondere auch das Verformen der Oberbahn entsprechend der Oberflächenkonfiguration von Verformungselement und Andruckeinrichtungen.This ensures in particular that only the length of the feed steps has to be set in order to set and / or adjust a specific configuration of the shaft part as a function of the deformation element and / or the pressure devices. The top web automatically adapts to the length of the feed steps, the configuration of the deformation element and the pressure devices due to the course of the deformation process and can be easily pulled off a roll. Advantageously, the deformation element is first introduced between the top web and the carrier web and, at the same time, the first pressure device is pressed against the top web and the deformation element. This ensures crease-free deformation and in particular also allows the upper web to be deformed in accordance with the surface configuration of the deformation element and pressure devices.

Der Verfahrenszyklus lässt sich weiter verkürzen, wenn jede Verbindungsstelle zwischen Oberbahn und Trägerbahn sowohl von der ersten Andruckeinrichtung als auch von der zweiten Andruckeinrichtung beaufschlagt wird, und wenn die Verbindung von Oberbahn und Unterbahn dabei während des Andrückens beider Andruckeinrichtungen erfolgt. Dies ermöglicht z. B. die provisorische Verbindung von Oberbahn und Trägerbahn im Bereich der ersten Andruckeinrichtung und die nachfolgende dauerhafte Verbindung im Bereich der zweiten Andruckeinrichtung. Da der Verbindungsvorgang sowohl bei Verwendung von Klebstoff oder anderen trocknenden oder wärmeaushärtenden oder amderweitig physikalisch oder chemisch aktivierbaren Verbindungsmedien, als auch bei Schweissverfahren oder ähnlichen Massnahmen besonders zeitraubend ist, lässt sich dadurch in vielen Fällen der Zeitaufwand pro Andruck- bzw. Verbindungsvorgang verkürzen. Ausserdem ist dadurch erfindungsgemäss sichergestellt, dass für den Andruck- und Verbindungsvorgang unter der ersten Andruckeinrichtung mehr Zeit zur Verfügung steht, da die erste Andruckeinrichtung vor der zweiten Andruckeinrichtung gegen die Oberbahn gepresst wird.The process cycle can be further shortened if each connection point between the top web and the carrier web is acted upon by both the first pressure device and the second pressure device, and if the connection between the top web and the bottom web takes place during the pressing of both pressure devices. This enables z. B. the provisional connection of top web and carrier web in the area of the first pressure device and the subsequent permanent connection in the area of the second pressure device. Since the connection process is particularly time-consuming both when using adhesive or other drying or heat-curing or, in the general way, physically or chemically activatable connection media, as well as with welding processes or similar measures, the time required for each pressing or connection process can be shortened in many cases. In addition, this ensures according to the invention that more time is available for the pressing and connecting process under the first pressing device, since the first pressing device is pressed against the upper web in front of the second pressing device.

Ganz besonders vorteilhaft lässt sich die Verbindung von Oberbahn und Trägerbahn erfindungsgemäss durchführen, wenn ein wärmeaktivierbares Medium zur Herstellung der Verbindung verwendet wird und wenn Trägerbahn und/oder Oberbahn im Bereich der Andruckeinrichtungen während des Andruckvorgangs erwärmt werden. Derartige Medien, wie z. B. thermoplastische Klebstoffe und dergleichen, können dabei entweder während des Vorschubs von Trägerbahn und/oder Oberbahn auf diese aufgebracht werden, oder sich bereits auf wenigstens einer der Bahnen befinden. Zur Verbindung von Oberbahn und Trägerbahn bedarf es dann lediglich der Erwärmung im Bereich wenigstens einer Andruckeinrichtung. Wenn eine Erwärmung im Bereich beider Andruckeinrichtungen erfolgt, lässt sich ersichtlicherweise bei der ersten Andruckeinrichtung zunächst eine generelle Erwärmung des Klebstoffs und eine provisorische Verbindung erreichen, während im Bereich der zweiten Andruckeinrichtung die vollständige Plastifizierung und dauerhafte Verbindung erfolgt.According to the invention, the connection of top web and carrier web can be carried out very particularly advantageously if a heat-activatable medium is used to produce the connection and if the carrier web and / or top web are heated in the area of the pressing devices during the pressing process. Such media, such as. B. thermoplastic adhesives and the like, can either be applied to the carrier web and / or top web during the advance of these, or are already on at least one of the webs. All that is required to connect the top web and carrier web is heating in the region of at least one pressure device. If heating takes place in the area of both pressure devices, it is evident that with the first pressure device a general heating of the adhesive and a provisional connection can be achieved, while in the area of the second pressure device the complete plasticization and permanent connection takes place.

Selbstverständlich lässt sich die Erfindung jedoch auch unter Verwendung von heiss aufgetragenen Verbindungsmedien oder wärmetrocknenden Medien realisieren. Auch sind Stanzverbindungen, andere Faltverbindungen oder formschlüssige Verbindungen sowie Verbindungen mit mechanischen Verbindungselementen anwendbar.Of course, the invention can, however, also be implemented using hot applied connection media or heat drying media. Stamped connections, other folded connections or positive connections and connections with mechanical connecting elements can also be used.

Durch die Erfindung lassen sich auf einfachste Weise unterschiedliche Wellenformen an ein und demselben Wellenteil herstellen, wenn die Vorschub-Schrittlänge eines Vorschubschritts gegenüber einem vorhergehenden Vorschubschritt verändert wird. Die Anspassung des Oberteils bzw. der Oberbahn an die geänderte Konfiguration erfolgt dabei automatisch.Different waveforms can be produced in the simplest way on one and the same shaft part by the invention if the feed step length of a feed step is changed compared to a previous feed step. The adaptation of the upper part or the upper track to the changed configuration takes place automatically.

Auch Wellenteile mit unterschiedlicher Wellenform lassen sich herstellen, wenn die Oberflächenkonfiguration des Verformungselements bei wenigstens einem Verformungsschritt gegenüber der Form während eines vorhergehenden Verformungsschritts verändert wird. Dies lässt sich z. B. dadurch erreichen, dass mehrteilige Verformungselemente verwendet werden, oder dass verschiedene Verformungselemente vorgesehen sind, die abwechselnd zwischen Oberbahn und Trägerbahn eingebracht werden können.Shaft parts with different wave shapes can also be produced if the surface configuration of the deformation element is changed in at least one deformation step compared to the shape during a preceding deformation step. This can be done e.g. B. achieve that multi-part deformation elements are used, or that different deformation elements are provided, which can be introduced alternately between the top web and carrier web.

Sofern auch eine Verformung der Oberbahn seitlich am Verformungselement oder auf dem Verformungselement erreicht werden soll, lässt sich dies besonders einfach dadurch realisieren, dass die Andruckeinrichtung seitlich gegen das Verformungselement und/oder auf das Verformungselement gepresst wird. Auf diese Weise lassen sich praktisch beliebige Oberflächenkonfigurationen der Oberbahn herstellen.If a deformation of the top web is to be achieved laterally on the deformation element or on the deformation element, this can be achieved particularly simply by pressing the pressure device laterally against the deformation element and / or onto the deformation element. In this way, practically any surface configurations of the top web can be produced.

Besonders vorteilhaft ist es, wenn die Oberbahn in Querrichtung mit Wellen bzw. Verformungen unterschiedlicher Höhe und/oder Oberflächenkonfiguration versehen wird. Dies erlaubt den Einsatz des Wellenteils zur Verpackung von Teilen der unterschiedlichsten Form.It is particularly advantageous if the top web is provided with waves or deformations of different heights and / or surface configurations in the transverse direction. This allows the use of the shaft part for packaging parts of different shapes.

Die Erfindung lässt sich besonders einfach mittels einer Vorrichtung realisieren, welche die Merkmale im Kennzeichen von Anspruch 8 aufweist. Da das Verformungselement ein festes Bestandteil der Vorrichtung ist, kann es präzise geführt und bewegt werden, so dass auch bei raschem Vorschub der Trägerbahn eine präzise Wellenbildung gewährleistet ist. Die unabhängig voneinander aktivierbaren Andruckvorrichtungen ermöglichen es, die beiden Andruckvorrichtungen in jeweils umgekehrter Reihenfolge abzusetzen bzw. wieder zurückzuziehen. Dies ermöglicht eine optimal saubere Deformation der Oberbahn und schützt die neu geformten Wellen vor einer Zerstörung, insbesondere verursacht durch Reibungskräfte beim Zurückziehen des Verformungselements oder durch Spannungen in der schräg zugeführten Oberbahn.The invention can be implemented particularly simply by means of a device which has the features in the characterizing part of claim 8. Since the deformation element is an integral part of the device, it can be guided and moved precisely, so that precise wave formation is ensured even when the carrier web is advanced rapidly. The pressure devices which can be activated independently of one another enable the two pressure devices to be set down or withdrawn in the reverse order in each case. This enables the top web to be deformed in an optimally clean manner and protects the newly formed shafts from destruction, in particular caused by frictional forces when the deformation element is pulled back or by tension in the obliquely fed top web.

Die seitlich einschiebbaren Verformungselemente können dabei auf optimal einfache Weise zur Herstellung unterschiedlicher Wellenteil-Konfigurationen verändert werden. Dadurch, dass die Formeinrichtung mit den Andruckvorrichtungen über dem Verformungselement liegt, lässt sich gleichzeitig die Formgebung am bzw. über dem Verformungselement durchführen und der Anspress- bzw. Verbindungsvorgang von Oberbahn und Trägerbahn erreichen. Die taktweise Ansteuerung der Andruckvorrichtungen, der Vorschubanordnung und des Verformungselements bedeutet dabei für den Fachmann keinerlei Schwierigkeiten. Die Folgesteuerung kann mechanisch oder elektronisch und auch hydraulisch oder pneumatisch auf an sich bekannte Weise verwirklicht werden.The laterally insertable deformation elements can be changed in an optimally simple manner to produce different shaft part configurations. Because the molding device with the pressure devices lies above the deformation element, the shaping can be carried out on or above the deformation element and the pressing or connecting process of the upper web and carrier web can be achieved. The cyclical control of the pressure devices, the feed arrangement and the deformation element means no difficulties for the person skilled in the art. The sequence control can be mechanical or can be implemented electronically and also hydraulically or pneumatically in a manner known per se.

Die Justierung der Formstation lässt sich besonders einfach bewerkstelligen, wenn die Vorschubeinrichtung eine Antriebseinrichtung mit einer Anordnung zum stufenlosen Verstellen des Vorschubwegs der Vorschubeinrichtung aufweist. Auf diese Weise lässt sich der Vorschubweg eines Vorschubschritts beliebig der Konfiguration des Verformungselements anpassen.The adjustment of the forming station can be accomplished particularly easily if the feed device has a drive device with an arrangement for the stepless adjustment of the feed path of the feed device. In this way, the feed path of a feed step can be adapted as desired to the configuration of the deformation element.

Die praktische Realisierung der Erfindung ist besonders einfach, wenn die Vorschubeinrichtung eine Halteeinrichtung zum Festhalten der Trägerbahn während der Vorschubbewegung aufweist. Auf diese Weise kann die Vorschubeinrichtung eine einfache Hubbewegung mit einer vorderen und einer hinteren Rastlage durchführen, wobei die Helteeinrichtung zum Festhalten und Transportieren der Trägerbahn nur während der Vorschubbewegung im Eingriff ist, in der vorderen Rastlage jedoch ausser Eingriff kommt, so dass der Rückwärts-Hub leer erfolgt.The practical implementation of the invention is particularly simple if the feed device has a holding device for holding the carrier web during the feed movement. In this way, the feed device can carry out a simple lifting movement with a front and a rear detent position, the helte device for holding and transporting the carrier web being engaged only during the feed movement, but disengaging in the front detent position, so that the reverse stroke done empty.

Zum Antrieb der Vorschubeinrichtung eignen sich ganz besonders Koppelgetriebe mit wenigstens zwei Rastlagen, wie sie z. B. in der Dissertation ETH (Eidgenössische Technische Hochschule Zürich) Nr. 6698 von Guntram Merhar beschrieben sind. Die Rastlagen können dabei jeweils den Vorwärts- bzw. den Rückwärts-Hub begrenzen und erlauben die Verformung der Oberbahn und die Verbindung von Oberbahn und Trägerbahn an der Formstation.To drive the feed device are particularly suitable coupling gear with at least two locking positions, such as z. B. in the dissertation ETH (Eidgenössische Technische Hochschule Zürich) No. 6698 by Guntram Merhar. The latching positions can limit the forward and backward stroke, respectively, and allow the upper web to be deformed and the upper web and carrier web to be connected at the forming station.

Sowohl die Hubeinstellung als auch die Ausbildung zeitlich ausreichender Rastlagen lässt sich besonders vorteilhaft erzielen, wenn ein sechsgliedriges Koppelgetriebe mit zwei Rastlagen verwendet wird.Both the stroke setting and the formation of sufficient locking positions can be achieved particularly advantageously if a six-link coupling gear with two locking positions is used.

Die Steuerung und Justierung der Vorschubeinrichtung lässt sich erfindungsgemäss weiterhin besonders fein regulierbar und einstellbar gestalten, wenn die Antriebseinrichtung einen Schrittmotor-Antrieb mit verstellbarer Impulszahl und/oder Impulslänge aufweist. Die Verwendung des Schrittmotors hat den grossen Vorteil, dass sich in an sich bekannter Weise elektronisch sowohl die Vorschubgeschwindigkeit als der Vorschub-Hub und die Dauer der Rastlagen praktisch unbegrenzt regeln lassen.The control and adjustment of the feed device can also be designed according to the invention in a particularly finely adjustable and adjustable manner if the drive device has a stepper motor drive with an adjustable pulse number and / or pulse length. The use of the stepper motor has the great advantage that, in a manner known per se, both the feed speed and the feed stroke and the duration of the detent positions can be regulated practically indefinitely.

Besonders einfach lassen sich Wellenteile mit unterschiedlicher Konfiguration in Querrichtung herstellen, wenn wenigstens eine der Andruckvorrichtungen in wenigstens zwei unterschiedlich geformte Abschnitte unterteilt ist und/oder wenigstens eine der Andruckvorrichtungen in zwei etwa nebeneinanderliegende Andruck-Elemente mit unterschiedlicher Form unterteilt ist, und wenn das Verformungselement entsprechend in Querrichtung in wenigstens zwei unterschiedlich geformte Abschnitte unterteilt ist. Auf diese Weise lassen sich z. B. Wellenteile erzeugen, bei denen sich die Wellen in Querrichtung verjüngen bzw. verbreitern oder die in stufenweise ansteigende oder abfallende Abschnitte unterteilt sind. Die Anpassbarkeit an verschiedene Wellenformen lässt sich dabei noch weiter verbessern, wenn zwei von beiden Seiten zwischen Oberbahn und Trägerbahn einschiebbare Verformungselemente vorgesehen sind. Dadurch wird auch die Taktgeschwindigkeit erhöht, da die Verformungselemente in diesem Fall von beiden Seiten nur den halben Weg eingeschoben werden müssen.Shaft parts with a different configuration in the transverse direction can be produced particularly easily if at least one of the pressure devices is divided into at least two differently shaped sections and / or at least one of the pressure devices is divided into two approximately adjacent pressure elements with different shapes, and if the deformation element accordingly is divided in the transverse direction into at least two differently shaped sections. In this way, z. B. generate shaft parts in which the waves taper or widen in the transverse direction or are divided into gradually increasing or decreasing sections. The adaptability to different wave forms can be further improved if two deformation elements that can be inserted from both sides between the upper web and the carrier web are provided. This also increases the cycle speed, since in this case the deformation elements only have to be inserted half way from both sides.

Ganz besonders vorteilhaft und einfach lässt sich die Erfindung durch Verwendung von flächigen Bahnen, d. h. einer Trägerbahn und wenigstens einer Oberbahn realisieren, wenn wenigstens eine der Bahnen zumindest abschnittsweise und wenigstens im Oberflächenbereich ein durch Wärmezufuhr aktivierbares Medium zum Verbinden der Bahnen aufweist. Damit lässt sich erreichen, dass im Bereich der Formstation keinerlei Klebstoffauftrag erfolgen muss, was die Taktgeschwindigkeit vergrössert und die Störungsanfälligkeit der Formstation reduziert. Besonders geeignet ist dabei die Verwendung eines thermoplastischen Klebstoffs, der z. B. streifenweise auf die Trägerbahn aufgebracht sein kann. Ganz besonders vorteilhaft ist jedoch die Verwendung eines thermoplastischen Überzugs, der z. B. als Schutzschicht auf der Trägerbahn angebracht sein kann und der gleichzeitig aufgrund seiner thermoplastischen Eigenschaften die Verbindung zwischen Träger- und Oberbahn herstellt. Besonders gute Materialeigenschaften bei einfachster Verarbeitbarkeit ergeben sich, wenn wenigstens eine Bahn vollständig aus einem thermoplastischen, bei Wärmezufuhr erweichenden und mit der anderen Bahn verbindbaren Kunststoffmaterial besteht. Auf diese Weise wird das Auftragen von Klebstoff überflüssig und ausserdem lässt sich durch geeignete Materialwahl ein feuchtigkeitsunempfindliches, formschönes Wellenteil herstellen. Selbstverständlich kann auch die Trägerbahn und/oder die Oberbahn vor oder nach dem Verformungsvorgang auf die für das fertige Wellenteil erforderliche Länge zugeschnitten werden.

  • Figur 1 den schematischen Ablauf eines erfindungsgemässen Verfahrens,
  • Figur 2 die schematische Darstellung von Verformungselement und Andruckeinrichtungen auf einer Formstation mit den Merkmalen der Erfindung,
  • Figur 3 die schematische Darstellung einer Formstation quer zur Bahnrichtung,
  • Figur 4 die Formstation gemäss Figur 3 längs zur Bahnrichtung,
  • Figur 5 die schematische Darstellung einer Vorschubanordnung gemäss Figur 3,
  • Figuren 6 bis 11 verschiedene Ausführungsformen von Andruckeinrichtungen und Verformungselementen jeweils während des Verformungs- und Andruckvorgangs,
  • Figur 12 die schematische Darstellung einer Formstation mit Heizanordnung,
  • Figur 13 eine mit thermoplastischem Material beschichtete Trägerbahn in Verbindung mit einer Oberbahn in vergrössertem Massstab,
  • Figur 14 eine aus thermoplastischem Material bestehende Oberbahn in Verbindung mit einer Trägerbahn in vergrössertem Massstab,
  • Figur 15 die Seitenansicht eines Wellenteils, das mit unterschiedlichen Vorschubschritten hergestellt ist, und
  • Figur 16 die schematische Darstellung des Herstellungsverfahrens eines Wellenteils mit zwei verschiedenen Oberbahnen.
The invention can be implemented particularly advantageously and simply by using flat webs, ie a carrier web and at least one top web, if at least one of the webs has at least in sections and at least in the surface area a medium that can be activated by supplying heat for connecting the webs. This means that there is no need to apply any adhesive in the area of the forming station, which increases the cycle speed and reduces the susceptibility to failure of the forming station. Particularly suitable is the use of a thermoplastic adhesive which, for. B. can be applied in strips to the carrier web. However, the use of a thermoplastic coating which, for. B. can be applied as a protective layer on the carrier web and at the same time creates the connection between the carrier and top web due to its thermoplastic properties. Particularly good material properties with the simplest processability result if at least one web consists entirely of a thermoplastic plastic material that softens when heat is added and can be connected to the other web. In this way, the application of adhesive becomes superfluous and, in addition, a suitable shaft selection can be used to produce a moisture-resistant, shapely shaft part. Of course, the carrier web and / or the top web can also be cut to the length required for the finished shaft part before or after the shaping process.
  • FIG. 1 shows the schematic sequence of a method according to the invention,
  • FIG. 2 shows the schematic representation of the deformation element and pressure devices on a molding station with the features of the invention,
  • FIG. 3 shows the schematic representation of a forming station transverse to the web direction,
  • FIG. 4 the forming station according to FIG. 3 along the web direction,
  • FIG. 5 shows the schematic representation of a feed arrangement according to FIG. 3,
  • FIGS. 6 to 11 different embodiments of pressure devices and deformation elements, each during the deformation and pressure process,
  • FIG. 12 shows the schematic representation of a molding station with a heating arrangement,
  • FIG. 13 shows a carrier web coated with thermoplastic material in connection with an upper web on an enlarged scale,
  • Figure 14 one made of thermoplastic material existing top web in connection with a carrier web on an enlarged scale,
  • Figure 15 is a side view of a shaft part, which is made with different feed steps, and
  • Figure 16 is a schematic representation of the manufacturing process of a shaft part with two different top webs.

Gemäss Figur 1 wird auf einer Formstation 1 eine Oberbahn 2 mit einer Trägerbahn 3 verbunden. Die einzelnen Verfahrensschritte I bis VI laufen dabei wie folgt ab : Während des Schritts I befinden sich eine erste Andruckeinrichtung 4 und eine zweite Andruckeinrichtung 5 in ihrer Arbeitsstellung, in welcher sie die Oberbahn 2 gegen die Trägerbahn 3 pressen und gleichzeitig die Verbindung der beiden Bahnen bewirken. Auf die Trägerbahn 3 ist in nicht dargestellter Weise ein Klebstoff aufgetragen, welcher die Verbindung während des Andruckvorgangs herstellt. Zwischen der ersten Andruckeinrichtung 4 und der zweiten Andruckeinrichtung 5 befindet sich ein Verformungselement 6 derart in seiner Arbeitsposition, dass die Oberbahn 2 wellenartig über das Verformungselement 6 gespannt wird. Ein seitlicher Stempel 7 presst gegen die Oberbahn 2 und die zweite Andruckeinrichtung 5 und bewirkt dabei ein sauberes Falten der Oberbahn 2 über dem Verformungselement 6.According to FIG. 1, an upper web 2 is connected to a carrier web 3 on a forming station 1. The individual process steps I to VI run as follows: During step I, a first pressure device 4 and a second pressure device 5 are in their working position, in which they press the top web 2 against the carrier web 3 and at the same time bring about the connection of the two webs . An adhesive (not shown) is applied to the carrier web 3, which establishes the connection during the pressing process. A deformation element 6 is located in its working position between the first pressure device 4 and the second pressure device 5 in such a way that the upper web 2 is stretched over the deformation element 6 in a wave-like manner. A lateral stamp 7 presses against the upper web 2 and the second pressing device 5 and thereby causes the upper web 2 to be folded cleanly over the deformation element 6.

Verfahrensschritt 11 zeigt, wie zunächst die erste Andruckeinrichtung 4 ausser Eingriff mit der Oberbahn 2 gebracht wird und sodann das Verformungselement 6 seitlich aus dem geschlossenen Wellenabschnitt zurückgezogen wird.Method step 11 shows how first the first pressure device 4 is brought out of engagement with the upper web 2 and then the deformation element 6 is laterally withdrawn from the closed shaft section.

Verfahrensschritt III zeigt, wie daraufhin der Stempel 7 ebenfalls zurückgezogen wird, die zweite Andruckeinrichtung 5 ausser Eingriff mit der Oberbahn 2 gebracht wird und gleichzeitig die Trägerbahn 3 um einen Schritt weiter, d. h. in der Zeichnung nach rechts gefördert wird.Method step III shows how the stamp 7 is then also withdrawn, the second pressure device 5 is brought out of engagement with the upper web 2 and at the same time the carrier web 3 by one step further, i. H. is promoted to the right in the drawing.

Verfahrensschritt IV zeigt, wie daraufhin das Verformungselement 6 wieder zwischen Trägerbahn 3 und Oberbahn 2 verlagert wird, und sodann die erste Andruckeinrichtung 4 in den Wellenabschnitt gepresst wird, in welchem sich beim vorangegangenen Arbeitsschritt die zweite Andruckeinrichtung 5 befunden hat. Durch diesen zweifachen Einsatz einer Andruckeinrichtung an der gleichen Verbindungsstelle wird gewährleistet, dass einerseits die Oberbahn 2 fest gegen die Trägerbahn 3 gepresst und gehalten wird, so dass beim nachfolgenden Eingriff der zweiten Andruckeinrichtung 5 während der Verfahrensschritte V und VI die Oberbahn 2 festgehalten und über das Verformungselement 6 gespannt werden kann, ohne dass eine bereits hergestellte Verbindung von Oberbahn 2 und Trägerbahn 3 dabei gelöst wird. Ausserdem bewirkt der zweifache Andruck eine verbesserte Verbindung von Trägerbahn 3 und Oberbahn 2.Method step IV shows how the deformation element 6 is then shifted again between the carrier web 3 and the top web 2, and then the first pressing device 4 is pressed into the shaft section in which the second pressing device 5 was located in the previous working step. This double use of a pressure device at the same connection point ensures that, on the one hand, the top web 2 is pressed and held firmly against the carrier web 3, so that during the subsequent intervention of the second pressure device 5 during the method steps V and VI, the top web 2 is held and via the Deformation element 6 can be tensioned without loosening an already established connection of top web 2 and carrier web 3. In addition, the double pressure causes an improved connection of the carrier web 3 and the top web 2.

Verfahrensschritt V zeigt, wie die Oberbahn 2 über das Verformungselement 6 gespannt und dabei verformt wird.Method step V shows how the top web 2 is stretched over the deformation element 6 and thereby deformed.

Verfahrensschritt VI zeigt analog Verfahrensschritt I das Anpressen und Verbinden von Oberbahn 2 und Trägerbahn 3 durch die zweite Andruckeinrichtung 5. Ersichtlicherweise wird die Oberbahn 2 während des Vorschubs der Trägerbahn 3 automatisch nachgezogen, ohne dass eine besondere Förderung erfolgen müsste. Die Oberbahn 3 kann dabei in an sich bekannter Weise von einer Rolle abgezogen werden, wobei zur Vermeidung von ruckartigen Zugbeanspruchungen während des Vorschubs in an sich bekannter Weise das Material in Schlaufen oder über Tänzer-Rollen und dergleichen geführt werden kann.Method step VI shows, analogous to method step I, the pressing and connecting of top web 2 and carrier web 3 by the second pressing device 5. Obviously, the top web 2 is automatically retightened while the carrier web 3 is being advanced, without any special conveying having to take place. The upper web 3 can be pulled off a roll in a manner known per se, the material being able to be guided in loops or over dancer rolls and the like in order to avoid jerky tensile loads during the advance.

Figur 2 zeigt die beiden Andruckeinrichtungen 4 und 5 in vergrössertem Massstab. Die aus der Zeichnung ersichtliche seitliche Abschrägung erlaubt ungehinderte Zufuhr der Oberbahn 2 an der zweiten Andruckeinrichtung 5 vorbei.Figure 2 shows the two pressure devices 4 and 5 on an enlarged scale. The side bevel shown in the drawing allows unimpeded supply of the upper web 2 past the second pressure device 5.

Gemäss Figuren 3 und 4 sind die Andruckeinrichtungen 4 und 5 mittels Schubstangen 8 an zwei hydraulischen Pressen-Anordnungen 10, 11 befestigt, die ihrerseits an einem Rahmen 9 angeordnet sind. Die Formstation 1 liegt vertikal unter den Andruckeinrichtungen 4 und 5 und weist einen Verformungstisch 12 auf, der im Bereich des Verformungselements 6 mit einer Heizanordnung 13 versehen ist. Zum seitlichen Verschieben des Verformungselements 6 ist ein Motor 14 vorgesehen.According to FIGS. 3 and 4, the pressure devices 4 and 5 are fastened to two hydraulic press arrangements 10, 11 by means of push rods 8, which in turn are arranged on a frame 9. The molding station 1 lies vertically under the pressure devices 4 and 5 and has a deformation table 12 which is provided with a heating arrangement 13 in the region of the deformation element 6. A motor 14 is provided for laterally displacing the deformation element 6.

Ausserdem ist eine Vorschubeinrichtung 15 mit einer Antriebseinrichtung 16 und einem Greifer 17 an der Formstation 1 vorgesehen, um die Trägerbahn 3 schrittweise gemäss Figur 1 auf der Formstation 1 weiterzubefördern. Zum Ansteuern der Antriebseinrichtung 16, des Motors 14 und der Pressanordnungen 10 und 11 im Takt der Verfahrensschritte gemäss Figur 1 ist eine Folgesteuervorrichtung 18 vorgesehen, welche über Steuerleitungen 19 die entsprechenden Steuerbefehle in der Reihenfolge der Verfahrensschritte gemäss Figur 1 abgibt. Derartige Folgesteuervorrichtungen zur Ansteuerung von Pressen-Anordnungen, z. B. über entsprechende Ventile oder von Motoren über entsprechende Schalteinrichtungen, sind allgemein bekannt und bedürfen hier nicht der näheren Erläuterung.In addition, a feed device 15 with a drive device 16 and a gripper 17 is provided on the forming station 1 in order to convey the carrier web 3 step by step according to FIG. 1 on the forming station 1. To control the drive device 16, the motor 14 and the press assemblies 10 and 11 in time with the method steps according to FIG. 1, a sequence control device 18 is provided which issues the corresponding control commands in the order of the method steps according to FIG. 1 via control lines 19. Such sequence control devices for controlling press arrangements, for. B. via corresponding valves or motors via appropriate switching devices are generally known and do not require further explanation here.

Wie aus Figuren 4 und 5 ersichtlich ist, erfolgt der Antrieb der Vorschubeinrichtung mittels eines Schrittmotor-Antriebs, der einen Impulsgeber 21 und einen Schrittmotor 22 aufweist. Die Impulsdauer und die Impulsfrequenz des Impulsgebers 21 sind dabei in an sich bekannter Weise verstellbar, so dass sowohl die Hubgeschwindigkeit als auch die Hublänge während eines Vorschubschritts der Greifer 17 einstellbar ist. Dadurch kann je nach Form und Konfiguration des herzustellenden Wellenteils der Vorschub der Trägerbahn 3 beliebig justiert und angepasst werden. Wie in Figur 5 schematisch dargestellt ist, werden die Greifer 17 während des Vorwärts-Hubs gegen die Trägerbahn 3 geschwenkt, so dass sie diese ergreifen und vorwärts fördern. Beim Rückwärts-Hub dagegen werden die Greifer 17 von der Trägerbahn 3 abgehoben, so dass sie während des Rückwärts-Hubs leer zurückgezogen werden. Das Verschwenken der Greifer 17 erfolgt durch eine nicht dargestellte Magnetanordnung. Während des Rückwärts-Hubs bleibt demgemäss die Trägerbahn 3 in der zuletzt erreichten Vorschubstellung, wobei der Verfahrensablauf gemäss Figur 1 abläuft.As can be seen from FIGS. 4 and 5, the feed device is driven by means of a stepper motor drive which has a pulse generator 21 and a stepper motor 22. The pulse duration and the pulse frequency of the pulse generator 21 are adjustable in a manner known per se, so that both the lifting speed and the stroke length can be set during a feed step of the grippers 17. As a result, depending on the shape and configuration of the shaft part to be produced, the feed of the carrier web 3 can be adjusted and adapted as desired. As shown schematically in FIG. 5, the grippers 17 are pivoted against the carrier web 3 during the forward stroke, so that they grip it and convey it forward. In the reverse stroke, on the other hand, the grippers 17 are lifted off the carrier web 3, so that they are withdrawn empty during the reverse stroke. The Ver pivot the gripper 17 by a magnet arrangement, not shown. Accordingly, during the reverse stroke, the carrier web 3 remains in the feed position last reached, the process sequence according to FIG. 1 taking place.

Figur 6 zeigt zwei Andruckeinrichtungen 4 und 5 sowie ein Verformungselement 6 zur Herstellung eines Wellenteils mit abgewandelter Konfiguration. Dabei wird ersichtlicherweise die Oberbahn 2 nicht nur über das Verformungselement 6 gespannt, sondern durch die Andruckeinrichtungen 4 und 5 gegen dieses gepresst. Auf diese Weise lässt sich die dargestellte Formgebung ohne Schwierigkeiten erzielen.Figure 6 shows two pressure devices 4 and 5 and a deformation element 6 for producing a shaft part with a modified configuration. It is evident that the upper web 2 is not only stretched over the deformation element 6, but is pressed against it by the pressure devices 4 and 5. In this way, the shape shown can be achieved without difficulty.

Figur 7 zeigt eine Anordnung mit drei Andruckeinrichtungen 4, 4a und 5. Im Verfahrensablauf wird dabei zunächst die erste Andruckeinrichtung 4 in ihre Eingriffstellung gebracht. Sodanri folgt die zusätzliche Andruckeinrichtung 4a, welche die Oberbahn 2 gegen das Verformungselement 6 presst. Auf diese Weise wird gewährleistet, dass die gewünschte Ausbildung von Kanten 23 erreich wird und gleichzeitig vermieden, dass die Oberbahn Falten wirft, wie dies der Fall sein könnte, wenn die zweite Andruckeinrichtung 5 vor der zusätzlichen Andruckeinrichtung 4a abgesenkt würde. Im übrigen verläuft die Verformung beim Ausführungsbeispiel gemäss Figur 7 analog dem in Figur 1 gezeigten Verfahrensablauf.FIG. 7 shows an arrangement with three pressure devices 4, 4a and 5. In the process sequence, the first pressure device 4 is first brought into its engaged position. Sodanri is followed by the additional pressure device 4a, which presses the upper web 2 against the deformation element 6. This ensures that the desired formation of edges 23 is achieved and at the same time prevents the upper web from wrinkling, as could be the case if the second pressure device 5 were lowered in front of the additional pressure device 4a. Otherwise, the deformation in the exemplary embodiment according to FIG. 7 proceeds analogously to the process sequence shown in FIG. 1.

Figur 8 zeigt ein abgewandeltes Ausführungsbeispiel, bei weichem die zusätzliche Andruckeinrichtung 4a mechanisch mit der Andruckeinrichtung 5 verbunden ist. Trotzdem erfolgt auch beim Ausführungsbeispiel gemäss Figur 8 der gleiche Ablauf wie beim Ausführungsbeispiel gemäss Figur 7. Das heisst, dass zunächst die erste Andruckeinrichtung 4 in Eingriff gelangt, dass sodann bei der Abwärtsbewegung die zusätzliche Andruckeinrichtung 4a gegen die Oberbahn 2 bzw. das Verformungselement 6 gepresst wird und dass erst danach die zweite Andruckeinrichtung 5 in Eingriff kommt. Dies wird dadurch bewirkt, dass die zusätzliche Andruckeinrichtung 4a längsverschiebbar an der zweiten Andruckeinrichtung 5 gelagert ist und durch eine Feder 24 in eine untere Position gedrückt wird, so dass die zusätzliche Andruckeinrichtung 4a in dieser tiefen Position zuerst auf die Oberbahn 2 bzw. das Verformungselement 6 drückt und dann während des weiteren Absenkens der zweiten Andruckeitirichtung 5 gegen die Kraft der Feder 24 relativ zur zweiten Andruckeinrichtung 5 verschoben wird.FIG. 8 shows a modified exemplary embodiment in which the additional pressure device 4a is mechanically connected to the pressure device 5. Nevertheless, the same sequence as in the embodiment according to FIG. 7 also takes place in the embodiment according to FIG. 8. This means that first the first pressure device 4 engages, and then during the downward movement the additional pressure device 4a is pressed against the upper web 2 or the deformation element 6 and that only then does the second pressure device 5 engage. This is achieved in that the additional pressure device 4a is mounted on the second pressure device 5 so as to be longitudinally displaceable and is pressed into a lower position by a spring 24, so that the additional pressure device 4a in this deep position first onto the top web 2 or the deformation element 6 presses and then during the further lowering of the second pressing device 5 against the force of the spring 24 is displaced relative to the second pressing device 5.

Figur 9 zeigt ein abgewandeltes Ausführungsbeispiel, bei welchem das Verformungselement 6 mit einer seitlichen Vertiefung 25 versehen ist, um eine entsprechende Konfiguration des Wellenteils zu erreichen. Im Verformungsablauf wird dabei zunächst die erste Andruckeinrichtung 4 gegen die Oberbahn 2 bzw. das Verformungselement 6 gedrückt. Sodann wird die zweite Andruckeinrichtung 5 abgesenkt und durch den Stempel 7 seitlich verschoben und in die Vertiefung 25 des Verformungselements 6 eingepresst. Ersichtlicherweise lassen sich mit der dargestellten Anordnung beliebige seitliche Oberflächen-Konfigurationen des Wellenteils auf einfachste Weise formen.FIG. 9 shows a modified exemplary embodiment, in which the deformation element 6 is provided with a lateral recess 25 in order to achieve a corresponding configuration of the shaft part. In the deformation process, the first pressure device 4 is first pressed against the upper web 2 or the deformation element 6. The second pressure device 5 is then lowered and laterally displaced by the stamp 7 and pressed into the depression 25 of the deformation element 6. Obviously, with the arrangement shown, any side surface configurations of the shaft part can be shaped in the simplest way.

Beim Ausführungsbeispiel gemäss Figuren 10 und 11 wird ein Wellenteil mit unterschiedlich hohen Wellenabschnitten hergestellt. Dazu ist das Verformungselement 6 unterteilt und weist einen oberen Abschnitt 6a auf. Figur 10 einen Anspressvorgang, bei welchem lediglich der untere Teil des Verformungselements 6 in Eingriff ist und dementsprechend ein niederer Abschnitt des Wellenteils geformt wird. Dagegen ist beim Verformungsschritt gemäss Figur 11 auch der obere Abschnitt 6a des Verformungselements 6 zwischen Oberbahn 2 und Trägerbahn 3 eingebracht, so dass ein höheres Wellenteil erzeugt wird. Selbstverständlich lässt sich durch entsprechende Ausbildung der Folgesteuervorrichtung 18 (Figur 4) das Einbringen des Verformungselements 6 mit oder ohne oberen Abschnitt 6a in beliebiger Reihenfolge steuern.In the exemplary embodiment according to FIGS. 10 and 11, a shaft part with shaft sections of different heights is produced. For this purpose, the deformation element 6 is subdivided and has an upper section 6a. FIG. 10 shows a pressing process in which only the lower part of the deformation element 6 is engaged and a lower section of the shaft part is formed accordingly. In contrast, in the deformation step according to FIG. 11, the upper section 6a of the deformation element 6 is also inserted between the upper web 2 and the carrier web 3, so that a higher shaft part is produced. Of course, the introduction of the deformation element 6 with or without the upper section 6a can be controlled in any order by appropriately designing the sequence control device 18 (FIG. 4).

Figur 12 zeigt eine Trägerbahn 3, welche mit zwei Streifen 26 eines thermoplastischen Klebstoffs versehen ist. Im Bereich der Heizanordnung 13, die als elektrische Widerstandsheizung ausgebildet ist, wird die Trägerbahn 3 erwärmt, so dass eine Erweichung und Aktivierung der Klebstoffstreifen 26 erreicht wird. Auf diese Weise kann die Verbindung von Trägerbahn und Oberbahn durch einfaches Anpressen mittels der Andruckeinrichtungen 4 und 5 erreicht werden. Besonders vorteilhaft ist es dabei, dass die Heizanordnung 13 sich im Bereich beider Andruckeinrichtungen 4 und 5 befindet, so dass die Erwärmung der Trägerbahn 3 im Bereich der ersten Andruckeinrichtung während einer relativ kurzen Zeitspanne erfolgen kann, die zu einem provisorischen Verbinden von Oberbahn 2 und Trägerbahn 3 ausreicht. Wenn dann die noch erwärmte Trägerbahn 3 beim darauffolgenden Verfahrensschritt (Figur 1) derart weitertransportiert wird, dass der während des ersten Schritts unter der zweiten Andruckeinrichtung 5 befindliche Wellenabschnitt unter die erste Andruckeinrichtung 4 gelangt, wird die noch erwärmte Verbindungsstelle von Oberbahn 2 und Trägerbahn 3 erneut zusammengepresst, wobei dann eine dauerhafte Verbindung sichergestellt wird.FIG. 12 shows a carrier web 3 which is provided with two strips 26 of a thermoplastic adhesive. The carrier web 3 is heated in the area of the heating arrangement 13, which is designed as an electrical resistance heater, so that the adhesive strips 26 are softened and activated. In this way, the connection between the carrier web and the top web can be achieved by simple pressing by means of the pressure devices 4 and 5. It is particularly advantageous that the heating arrangement 13 is located in the area of both pressure devices 4 and 5, so that the heating of the carrier web 3 in the area of the first pressure device can take place for a relatively short period of time, which leads to a provisional connection of the upper web 2 and carrier web 3 is sufficient. If the still heated carrier web 3 is then transported further in the subsequent method step (FIG. 1) in such a way that the shaft section located under the second pressing device 5 during the first step passes under the first pressing device 4, the still heated connection point of the upper web 2 and carrier web 3 becomes again pressed together, which then ensures a permanent connection.

Figur 13 zeigt eine Trägerbahn 3, welche mit einer durchgehenden Beschichtung 27 aus thermoplastischem Material versehen ist. Die Beschichtung 27 dient einerseits als Schutz der Oberfläche der Trägerbahn 3, die dadurch wasser-und feuchtigkeitsünempfindlich wird. Gleichzeitig wird jedoch durch Erwärmung mittels der Heizanordnung 13 eine Erweichung im Bereich der Verbindungsstelle mit der Oberbahn 2 erreicht und durch das Anpressen mittels der Andruckeinrichtungen 4 und 5 dauerhafte Verbindung ermöglicht.FIG. 13 shows a carrier web 3 which is provided with a continuous coating 27 made of thermoplastic material. The coating 27 serves on the one hand to protect the surface of the carrier web 3, which thereby becomes insensitive to water and moisture. At the same time, however, softening in the area of the connection point with the upper web 2 is achieved by heating by means of the heating arrangement 13 and permanent connection is made possible by pressing on by means of the pressure devices 4 and 5.

Figur 14 zeigt ein Ausführungsbeispiel, bei welchem die Oberbahn 2 vollständig aus thermoplastischem Material besteht. Auch hier wird die Verbindung mit der Trägerbahn 3 durch Erweichen im Bereich der Heizanordnung 13 bzw. der Andruckeinrichtungen 4 und 5 erreicht.Figure 14 shows an embodiment, at which the top web 2 consists entirely of thermoplastic material. Here, too, the connection to the carrier web 3 is achieved by softening in the area of the heating arrangement 13 or the pressure devices 4 and 5.

Dies stellt eine besonders einfache und vorteilhafte Ausbildung eines Wellenteils dar. Einerseits wird dabei das Aufbringen von Klebstoffstreifen 26 erübrigt und anderseits wird die Oberbahn 2 absolut wasserunempfindlich, was in bestimmten Anwendungsfällen wünschenswert sein kann.This represents a particularly simple and advantageous embodiment of a shaft part. On the one hand, there is no need to apply adhesive strips 26, and on the other hand the top web 2 becomes absolutely water-insensitive, which can be desirable in certain applications.

Figur 15 zeigt ein Ausführungsbeispiel eines Wellenteils, bei welchem durch entsprechende Ansteuerung der Vorschubeinrichtung 15 die Vorschubschritte aufeinanderfolgender Abschnitte des Wellenteils im Verhältnis 1 : 2 vergrössert sind. Das Wellenteil lässt sich damit auf optimal einfache Weise an die Bedürfnisse der zu verpackenden Teile anpassen.FIG. 15 shows an exemplary embodiment of a shaft part, in which the feed steps of successive sections of the shaft part are enlarged in a ratio of 1: 2 by appropriate actuation of the feed device 15. The shaft part can thus be optimally adapted to the needs of the parts to be packaged.

Figur 16 zeigt ein Ausführungsbeispiel, bei welchem auf einer Trägerbahn 3 zwei Oberbahnen 2a und 2b angeordnet werden. Die durch die Oberbahn 2a gebildete Konfiguration entspricht dem Ausführungsbeispiel gemäss Figur 7 und das Verformungselement 6c und ein erstes Paar von Andruckeinrichtungen 4, 5 (nicht dargestellt) sind wie dort dargestellt ausgebildet. Dagegen entspricht die durch die Oberbahn 2b gebildete Konfiguration dem Wellenteil gemäss Figur 1 und das Verformungselement 6d und ein zweites Paar von Andruckeinrichtungen 4, 5 (nicht dargestellt) sind entsprechend ausgebildet. Mit anderen Worten sind zur Herstellung des Wellenteils gemäss Figur 16 sowohl zwei von je gegenüberliegenden Seiten einschiebbare Verformungselemente 6c und 6d als auch zwei nebeneinander liegende Paare von Andruckeinrichtungen 4, 5 zur Durchführung des Verformungsvorgangs vorgesehen. Wellenteile in der dargestellten Form, d. h. mit zwei verschiedenen Oberflächen-Konfigurationen, lassen sich selbstverständlich auch durch entsprechende Ausgestaltung der Verformungselemente 6 und der Andruckeinrichtungen 4, 5 in der Weise herstellen, dass eine durchgehende Oberbahn 2 verwendet werden kann. Dies hängt ganz von der gewünschten Formgebung ab.FIG. 16 shows an exemplary embodiment in which two top webs 2a and 2b are arranged on a carrier web 3. The configuration formed by the top web 2a corresponds to the exemplary embodiment according to FIG. 7 and the deformation element 6c and a first pair of pressure devices 4, 5 (not shown) are designed as shown there. In contrast, the configuration formed by the upper web 2b corresponds to the shaft part according to FIG. 1 and the deformation element 6d and a second pair of pressure devices 4, 5 (not shown) are designed accordingly. In other words, for the production of the shaft part according to FIG. 16, both two deformation elements 6c and 6d, which can be inserted from opposite sides, and two adjacent pairs of pressure devices 4, 5 are provided for carrying out the deformation process. Shaft parts in the form shown, i.e. H. With two different surface configurations, it is of course also possible to manufacture the deformation elements 6 and the pressure devices 4, 5 in such a way that a continuous top web 2 can be used. This depends entirely on the desired shape.

Claims (17)

1. A process for the continuous production of a corrugated member comprising a backing web (3) and a top web (2) which is arranged in a corrugated configuration on the backing web (3), wherein the top web is connected at connecting locations in the region of the depressions which extend transversely with respect to the direction of the web, by the backing web (3) being moved cyclically forwards relative to a shaping station (1) and the top web (2) which is to be connected to the backing web (3) being supplied from a feed means, and by the top web being deformed at the shaping station (1) by means of first and second pressing means (4, 5), over a deforming element (6) disposed between the two webs, and being pressed against the backing web (3) at the connecting locations, characterised in that at the shaping station (1), during a rest phase, a deforming element (6) is inserted laterally between the backing web (3) and the top web (2), that the first pressing means (4) which is downstream of the deforming element (6) in the direction of advance movement is lowered and then the second pressing means (5) which is upstream of the deforming element (6) in the direction of advance movement is lowered, in which operation the top web (2) is deformed and connected to the backing web (3), that the first pressing means (4) is raised and the deforming element (6) is withdrawn laterally, and that then the second pressing means (5) is raised and the backing web (3) is moved on by an advance step, and then the operation at the shaping station begins afresh.
2. A process according to claim 1 characterised in that each connecting location between the top web (2) and the backing web (3) is acted upon both by the first pressing means (4) and by the second pressing means (5) and that the top web and the backing web are connected during the pressing operation of the two pressing means.
3. A process according to claim 2 using a heat- activatable agent for connecting the top web and the backing web characterised in that the backing web and/or the top web are heated in the region of at least one pressing means during the pressing operation.
4. A process according to one of claims 1 to 3 characterised in that to produce different corrugation configurations on a corrugated member, the length of an advance stepping movement is varied relative to a preceding advance stepping movement.
5. A process according to one of claims 1 to 4 characterised in that, to produce different corrugation configurations on a corrugated member, the surface configuration of the deforming element (6) is varied in at least one deformation step relative to the shape during a preceding deformation step.
6. A process according to one of claims 1 to 5 characterised in that the top web (2) is laterally pressed against the deforming element (6) by at least one of the pressing means (4, 5).
7. A process according to one of claims 1 to 6 characterised in that at least two top webs (2) in juxtaposed relationship are fed to a backing web (3) and are connected thereto at the shaping station (1).
8. Apparatus for continuously producing a corrugated member comprising a backing web (3) and a top web (2) which is arranged in a corrugated configuration thereon, wherein the top web is connected to the backing web in the region of the respective depressions which extend transversely with respect to the direction of the web, comprising a shaping station (1) past which the backing web (3) can be transported cyclically, and a feed means for the top web (2), as well as two pressing means (4, 5) which are arranged above the shaping station (1) and which can be cyclically lowered on to the top web (2), in particular for carrying out the process according to claim 1, characterised in that the shaping station (1) has a cyclically operating deforming element (6) which can be laterally inserted between the top web (2) and the backing web (3) to form a corrugation section and which can be withdrawn again from the closed corrugation section after the shaping operation, and that the two pressing means (4, 5) are activatable independently of each other.
9. Apparatus according to claim 8 characterised in that there are provided at least two deforming elements (6) which can be inserted individually and/or jointly between the top web (2) and the backing web (3), for the deformation operation.
10. Apparatus according to claim 9 characterised in that the backing web (3) can be transported by an advance means (15) which is provided with a drive means (16) having an arrangement for adjusting the advance distance.
11. Apparatus according to claim 10 characterised in that the advance means (15) has a holding means for retaining the backing web during the advance movement.
12. Apparatus according to claim 10 characterised in that the drive means has a stepping motor drive with an adjustable number of pulses and/or pulse length.
13. Apparatus according to claim 8 characterised in that at least one of the pressing means and/or the shaping station is or are provided with a heating arrangement.
14. Apparatus according to one of claims 8 to 13 characterised in that at least one of the pressing means is provided with an arrangement for applying a lateral pressure against the deforming element.
15. Apparatus according to claim 14 characterised in that there is provided a pressing punch for laterally displacing the pressing means and pressing same against the deforming element.
16. Apparatus according to one of claims 8 to 15 characterised in that for producing corrugated members with a different surface configuration in the transverse direction, at least one of the pressing means is subdivided into at least two sections of different forms, and/or that at least one of the pressing means is subdivided into two substantially juxtaposed pressing elements of different shapes, and that the deforming element is also subdivided in the transverse direction into at least two sections.
17. Apparatus according to one of claims 8 to 16 characterised in that there are provided two deforming elements which can be inserted between the top web and the backing web from both sides.
EP82111389A 1982-01-13 1982-12-08 Method and apparatus for making a corrugated structure Expired EP0083741B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82111389T ATE18370T1 (en) 1982-01-13 1982-12-08 METHOD AND DEVICE FOR MANUFACTURING A SHAFT PART.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH175/82 1982-01-13
CH17582 1982-01-13

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EP0083741A1 EP0083741A1 (en) 1983-07-20
EP0083741B1 true EP0083741B1 (en) 1986-03-05

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EP (1) EP0083741B1 (en)
JP (1) JPS58134733A (en)
KR (1) KR880001938B1 (en)
AT (1) ATE18370T1 (en)
AU (1) AU549348B2 (en)
CA (1) CA1220985A (en)
DE (1) DE3269734D1 (en)

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EP0115746A3 (en) * 1983-02-02 1984-09-26 Interrondo AG Method of manufacturing boxes and boxes made by this method
GB9103378D0 (en) * 1991-02-19 1991-04-03 British Aerospace Progressive moulding and curing of composite materials
JP2008055877A (en) * 2006-09-04 2008-03-13 Ishibashi:Kk Method of manufacturing corrugated cardboard
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AU549348B2 (en) 1986-01-23
CA1220985A (en) 1987-04-28
US4894113A (en) 1990-01-16
ATE18370T1 (en) 1986-03-15
AU9118982A (en) 1983-07-21
DE3269734D1 (en) 1986-04-10
EP0083741A1 (en) 1983-07-20
JPS6343224B2 (en) 1988-08-29
KR880001938B1 (en) 1988-10-04
KR840003068A (en) 1984-08-13
JPS58134733A (en) 1983-08-11

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