EP0379977B1 - Cable drum - Google Patents

Cable drum Download PDF

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Publication number
EP0379977B1
EP0379977B1 EP90101024A EP90101024A EP0379977B1 EP 0379977 B1 EP0379977 B1 EP 0379977B1 EP 90101024 A EP90101024 A EP 90101024A EP 90101024 A EP90101024 A EP 90101024A EP 0379977 B1 EP0379977 B1 EP 0379977B1
Authority
EP
European Patent Office
Prior art keywords
drum
wall
circumferential
circumferential wall
guide groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90101024A
Other languages
German (de)
French (fr)
Other versions
EP0379977A1 (en
Inventor
Michael Dipl.-Ing. Hörmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marantec Antriebs und Steuerungstechnik GmbH and Co KG
Original Assignee
Marantec Antriebs und Steuerungstechnik GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Marantec Antriebs und Steuerungstechnik GmbH and Co KG filed Critical Marantec Antriebs und Steuerungstechnik GmbH and Co KG
Publication of EP0379977A1 publication Critical patent/EP0379977A1/en
Application granted granted Critical
Publication of EP0379977B1 publication Critical patent/EP0379977B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18Constructional details
    • B65H75/26Arrangements for preventing slipping of winding
    • B65H75/265Reels with grooves or grooved elements inhibiting aligned or orderly winding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D15/00Corrugating tubes
    • B21D15/04Corrugating tubes transversely, e.g. helically
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28Other constructional details
    • B66D1/30Rope, cable, or chain drums or barrels
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05DHINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/60Spring drums operated only by closure members
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Type of wing
    • E05Y2900/132Doors

Definitions

  • the invention relates to a drum for receiving a cable of an actuation and / or weight compensation device for a door leaf on its outer surface, which has a helically progressing guide groove in the drum circumferential and drum axis directions, into which the wound rope is guided in a single layer, the drum shell wall of which is a sheet metal, in which the guide groove is pressed in such a way that the sheet metal in the region of the drum casing wall, seen in the cross section through the drum axis, is formed in an essentially undulating manner, the troughs appearing on the outer casing surface having the cross section of the guide groove and which the troughs of the inner surface of the jacket facing the drum axis are radially opposite the raised zones between the adjacent groove windings.
  • the invention also relates to a method for producing such a drum.
  • Such drums are used in particular for ropes that are part of an actuation and / or weight compensation device for a door leaf, especially one that is moved overhead and consists of links that are articulated in succession in the direction of movement.
  • drums provided with guide grooves for the rope are circular-cylindrical, conical or alternatively from a circular-cylindrical shape to a conical shape, in the context of the conical shape a progressive increase in the diameter can be provided, so that a corresponding spring force line can be compensated for by the differently increasing diameter of the cable turns.
  • Such drums are known, specifically in the form of cast parts, in particular die-cast parts, also made of light metal alloys. The manufacture of such drums is thus complex and their weight is still relatively high even in the case of cast aluminum.
  • a known drum of the type mentioned - DE-C-393583 - is provided with a jacket made of sheet metal, in which the helically progressing guide groove for receiving the rope is pressed or rolled.
  • This sheet metal jacket has to be supported on the drum shaft by means of side walls or the like leading to the shaft, if necessary by means of a support body, so that a correspondingly large number of parts to be connected with one another is required with corresponding handling effort.
  • the invention has for its object to provide a drum of the type in question, which is easier and cheaper to manufacture and may also be lighter than those according to the prior art.
  • this object is achieved according to the invention in that one of the drum end walls is formed in one piece with the sheet of the drum shell wall and also in one piece with the shaft shell formed from the sheet of the drum shell wall in the axial direction thereof to hold on to the Has drum penetrating shaft.
  • drum shell wall of the guide groove formation for the rope is integrally formed with a drum end wall and this adjoining axle hub, so that, if necessary, only the other drum end wall - preferably with an integral subsequent hub hub - is provided as an additional part for forming the drum.
  • the production takes place without cutting in a pressing process, which causes flow deformation of the sheet. This results in an essentially undulating shape in the longitudinal section through the drum axis in the region of the drum casing wall.
  • the drum jacket wall with the one drum end wall along with the associated axle hub is made from a sheet metal which is converted from an essentially flat starting shape into the drum shape by flow deformation. Radially protruding, integrally adjoining collars can be formed on the two end edges of the drum shell wall. The production then proceeds in such a way that the sheet metal in the area of this drum front wall or in a radially inner one Area held in the processing machine and is preferably set in rotation about the axis of the drum to be manufactured via this holding engagement.
  • the molding tool acting on the sheet metal rotate about this drum axis and to keep the sheet metal stationary, but preferably the sheet metal is set in rotation, while at least the molding tool acting on the outer surface of the drum shell wall to be formed does not rotate about the drum axis.
  • the direct attack of such a tool, between which and the sheet metal a relative movement takes place, is usually carried out via one or more rolling elements in order to avoid a frictional attack.
  • the molding tool has at least one tool part which engages on the outer surface of the drum casing wall to be formed.
  • the pressure tool part carries out a feed corresponding to the pitch of the helical guide groove in the drum axis direction depending on the relative speed between the sheet and the stamping tool.
  • the die which is arranged coaxially to the drum axis, can rotate together with the sheet metal at the same speed.
  • a further embodiment can work with a set of rollers consisting of profiled rollers engaging on the outside and inside of the drum shell wall, which can be moved towards one another and are guided in their entirety following the guide groove pitch with a movement component in the drum axis direction, in such a way that the sheet metal region of the drum shell wall which is accommodated therebetween is coordinated of slope and peripheral speed is formed with the guide groove.
  • a set of rollers consisting of profiled rollers engaging on the outside and inside of the drum shell wall, which can be moved towards one another and are guided in their entirety following the guide groove pitch with a movement component in the drum axis direction, in such a way that the sheet metal region of the drum shell wall which is accommodated therebetween is coordinated of
  • a - in particular essentially flat - sheet metal disk into the drum shape with a insofar to carry out separate front tool with which the sheet is first converted into the shape of the circular cylindrical, conical or successively circular cone-shaped drum shell wall, while subsequently the guide groove and optionally the front collar and the like are formed in one or in a separate subsequent operation, the latter also in the latter first pressing process can be formed.
  • the contour of the circular cylindrical or conical wall profile of the drum shell preferably corresponds approximately to the longitudinal section connecting line in the outer, inner or intermediate peripheral region of the waveform of the guide groove profile of the drum shell wall to be produced.
  • different relative speeds can be provided, for example, first of all, with a high relative speed or rotational speed of the sheet metal part, the shaping of the drum shell wall contour and then, at a slower speed, the stamping of the guide groove.
  • the part of the mold which characterizes the formation of the guide groove can be made without regard to a rough shaping of the sheet in the axial direction, up to the formation of profile rolls, one of which is arranged coaxially to the drum axis and has the negative profile of the guide groove course on its outer surface and whose other from the radially outside on the preformed sheet metal profile roller has the appearance on the outer surface of the drum shell wall guide groove web profile, with the drum radius, so that a in the drum axis direction movement component of such a grooved molded part is unnecessary. If we are talking about profile here, then in the sense of a line following the surface of the profile in the longitudinal direction.
  • embossing work that forms the guide groove formation can also be carried out with other shaping tools as described above, for example with the aid of a roller set.
  • the three exemplary embodiments shown in the drawing are each based on a drum, as can be seen in the basic structure from FIG. in which one of the end walls is integrally formed with the drum shell wall. This corresponds to the manufacture of the drum from an approximately flat sheet metal disc by attacking a pressing tool which is guided from this end face in the axial direction to the other end face edge of the drum, taking into account the guide groove course to be formed in the region of the drum shell wall.
  • the drum designated as a whole by 1, has a drum casing wall 2 which, in the drawing, integrally merges into an end wall 3 on the left-hand side, while at the axially opposite side end region it has a separate, i.e. is not completed in one piece with the end wall 4 provided on the drum jacket wall 2.
  • the end face wall 3, which is formed in one piece with the jacket wall 2, has an axle hub 5, which is formed in one piece with the end face wall 3 and can be formed in the course of the pressing process.
  • This is possible, for example, in that a flat sheet-metal washer is gripped by a turning tool in the mouth area encompassed by the axle hub 5, whereupon a pressing tool is moved in the axial direction of the drum from the clamping point and forms the circular-cylindrical wall of the axle hub 5.
  • This is then followed by the end face wall 3 without any compression deformation, whereupon the further cladding is formed.
  • a Matrix which supports the front side wall 3 from the inside of the drum in a manner not shown and has the negative contour on its outside of the jacket, which is shown on the inside of the jacket wall 2 due to the course of the guide grooves, as will be explained in more detail below.
  • a pressing tool engaging the sheet metal disk is then tracked following the contour of the outer surface of the drum shell wall 2 and taking into account the gradient of the guide groove course with radial and axial pressure following the die contour in such a way that the guide groove course results.
  • the separate end wall made of sheet metal can also be equipped with a hub extension 6, which can optionally also be formed in one piece by pressing on the end wall 4.
  • the axle hub 5 is penetrated by a screw 7, which is screwed into a bore in the hollow axis, not shown, of a shaft carrying a weight compensation torsion spring, so that the drum is axially and non-rotatably connected to the hollow hub.
  • a similar screw device can also be provided in the area of the hub extension 6.
  • the axle hub 5 and / or the hub extension 6 can also be designed as separate parts to be connected to the sheet, for example made of die-cast, especially when high torques are to be transmitted.
  • the drum casing wall 2 is provided with a helical guide groove 8, the groove formation of which serves to accommodate a rope (not shown) on the outer surface 9 of the drum casing wall 2.
  • the guide groove 8 is pressed into the sheet of the drum shell wall 2 with flow deformation, so that the wall 2 seen in longitudinal section in a material and weight-saving manner roughly wavy course, as can be seen from the upper half of Figure 1.
  • the troughs 10 appearing on the outer surface of the wall 2 form the receiving areas of the guide groove windings for the engagement of the rope (not shown), while the inner surface 12 of the drum shell wall 2 seen from the drum axis 11 has troughs 13 which, viewed in the radial direction, have the Outer surface 9 lie opposite zones 14, which separate the troughs 10 of the guide groove windings from one another.
  • the wave troughs 10 and raised zones 14 which can be seen from the upper cross-sectional illustration in FIG. 1 merge into closed peripheral regions in the course of the course of the guide grooves 8.
  • the drum jacket wall 2 is provided on the side edge 17 adjoining the one-piece front wall 3 with a radially projecting collar 15, which correspondingly laterally delimits the receiving area of the drum jacket wall 2 for the rope and the one-piece transition between the jacket wall 2 and the front wall 3 forms.
  • the axially opposite side edge 18 is also formed in the form of a collar 16 projecting radially outward and serves to fasten the separately formed end wall 4.
  • this end wall 4 is provided with the collar 16 of the side edge by spot welds 19 distributed over the circumference 18 of the drum shell wall 2 firmly connected. In this way, the drum is supported on both ends of the hollow shaft, not shown.
  • FIG. 2 shows a partial section of the upper right connection area between the drum jacket wall 2 and the separate end wall 4, which illustrates another type of connection instead of welding.
  • the radially projecting collar 16 ' is longer and, after the separate end face 4 has been applied, is flanged around its peripheral edge 21, which flanging is denoted by 20.
  • This flanging can be designed to be continuous over the circumference or to be carried out separately in sections distributed over the circumference.
  • Figure 3 shows a partial section corresponding to Figure 2, in which the connection of the side edge 18 with the outer peripheral edge 21 'of the separate end wall 4 is accomplished with the aid of pressure-forming formations 22 distributed over the circumference.
  • the pressure-forming formations 22 are carried out from the peripheral edge 21 'of the end wall 4 in the collar 16' of the side edge 18 of the drum shell wall 2, so that there are projecting areas towards the axial center of the drum.
  • the peripheral edge 21 'of the end wall 4 and the collar 16' are slightly bent axially as seen from the axial center of the drum outwards.
  • the collar 16 ⁇ also has an axially projecting centering edge for receiving the end wall 4.
  • the drum shown in its entirety in FIG. 1 is used to hold a rope that is connected to its end running from the drum is fastened to an overhead door leaf in order to create a weight compensation device for the door leaf with the aid of a torsion spring which engages non-positively on the hollow shaft, which is connected in a rotationally fixed manner to the drum, as is known in the prior art.
  • the drum is designed in the form of a circular cylinder in a first region 23, which is followed by a conical region 24 which, seen from the circular-cylindrical region 23, is formed with a progressively increasing diameter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

Drum for receiving a cable, in particular in connection with the movement of a door leaf, which drum is provided on its lateral surface with a guide groove which is designed in such a manner as to proceed helically in the circumferential and axial direction of the drum and into which the wound cable is correspondingly received by being guided in a single layer. For a simple and inexpensive production of the drum, it is designed in such a way that at least the lateral wall consists of a metal sheet into which the guide groove is impressed, and is produced in its entirety by a cold extrusion process. <IMAGE>

Description

Die Erfindung betrifft eine Trommel für die Aufnahme eines Seiles einer Betätigungs- und/oder Gewichtsausgleichseinrichtung für ein Torblatt auf ihrer Mantelaußenfläche, die eine in Trommelumfangs- und Trommelachsrichtung schraubenförmig fortschreitend ausgebildete Führungsrille aufweist, in die das aufgewickelte Seil einlagig geführt aufgenommen ist, deren Trommelmantelwandung aus einem Blech besteht, in welches die Führungsrille derart eingedrückt ist, daß das Blech im Bereich der Trommelmantelwandung im durch die Trommelachse gelegten Querschnitt gesehen im wesentlichen wellenförmig verlaufend ausgeformt ist, wobei die an der Mantelaußenfläche in Erscheinung tretenden Wellentäler den Querschnitt der Führungsrille aufweisen und die an der der Trommelachse zugewandten Mantelinnenfläche vorhandenen Wellentäler den erhabenen Zonen zwischen den angrenzenden Rillenwindungen radial gegenüberliegen. Desgleichen betrifft die Erfindung ein Verfahren für die Herstellung einer solchen Trommel. Solche Trommeln werden insbesondere für Seile verwendet, die Teil einer Betätigungs- und/oder Gewichtsausgleichseinrichtung für ein Torblatt sind, vor allem ein solches, das über Kopf bewegt wird und aus in Bewegungsrichtung aufeinanderfolgenden, aneinander angelenkten Gliedern besteht.The invention relates to a drum for receiving a cable of an actuation and / or weight compensation device for a door leaf on its outer surface, which has a helically progressing guide groove in the drum circumferential and drum axis directions, into which the wound rope is guided in a single layer, the drum shell wall of which is a sheet metal, in which the guide groove is pressed in such a way that the sheet metal in the region of the drum casing wall, seen in the cross section through the drum axis, is formed in an essentially undulating manner, the troughs appearing on the outer casing surface having the cross section of the guide groove and which the troughs of the inner surface of the jacket facing the drum axis are radially opposite the raised zones between the adjacent groove windings. The invention also relates to a method for producing such a drum. Such drums are used in particular for ropes that are part of an actuation and / or weight compensation device for a door leaf, especially one that is moved overhead and consists of links that are articulated in succession in the direction of movement.

Je nach der Kraft-Weg-Charakteristik des auszuführenden Bewegungsvorganges und insbesondere derjenigen einer für den Gewichtsausgleich vorgesehenen Feder sind solche mit Führungsrillen für das Seil versehene Trommeln kreiszylindrisch, konisch oder aber von einer kreiszylindrischen Form in eine konische Form übergehend ausgebildet, wobei im Rahmen der Konusform ein progressiver Anstieg des Durchmessers vorgesehen sein kann, so daß eine entsprechende Federkraftlinie durch den unterschiedlich anwachsenden Seilwindungsdurchmesser kompensiert werden kann.Depending on the force-displacement characteristic of the movement process to be carried out and in particular that of a spring provided for weight compensation, such drums provided with guide grooves for the rope are circular-cylindrical, conical or alternatively from a circular-cylindrical shape to a conical shape, in the context of the conical shape a progressive increase in the diameter can be provided, so that a corresponding spring force line can be compensated for by the differently increasing diameter of the cable turns.

Solche Trommeln sind bekannt, und zwar in Ausbildung als Gußteile, insbesondere Druckgußteile, auch aus Leichtmetall-Legierungen. Damit ist die Herstellung solcher Trommeln aufwendig und ihr Gewicht auch bei Aluminiumgußausführung noch relativ hoch.Such drums are known, specifically in the form of cast parts, in particular die-cast parts, also made of light metal alloys. The manufacture of such drums is thus complex and their weight is still relatively high even in the case of cast aluminum.

Eine bekannte Trommel der eingangs genannten Art - DE-C-393583 - ist mit einem Mantel aus Blech versehen, in den die schraubenförmig fortschreitende Führungsrille für die Aufnahme des Seiles eingepresst oder eingewalzt ist. Dieser Blechmantel muß - gegebenenfalls über einen Tragkörper - mittels zur Welle hin führenden Seitenwandungen oder dergleichen an der Trommelwelle abgestützt werden, so daß eine entsprechend große Anzahl von miteinander zu verbindenden Teilen mit entsprechendem Handhabungsaufwand erforderlich ist.A known drum of the type mentioned - DE-C-393583 - is provided with a jacket made of sheet metal, in which the helically progressing guide groove for receiving the rope is pressed or rolled. This sheet metal jacket has to be supported on the drum shaft by means of side walls or the like leading to the shaft, if necessary by means of a support body, so that a correspondingly large number of parts to be connected with one another is required with corresponding handling effort.

Es ist desweiteren bekannt, - US 4,055,976 - Hohlkörper aus einem anfangs flächigen Material durch sogenanntes Drücken herzustellen, wobei ein Drückwerkzeug in axialer und gegebenenfalls auch radialer Verstellung das um eine Achse rotierend angetriebene Werkstück in axialer Richtung bleibend verformt. Wenn auch komplizierte Formgebungen möglich sein sollen, sind Drückerzeugnisse mit einem formgebundenen axialen Vorschub des Drückwekzeugs in Abhängigkeit von der Drehzahl des Werkstückes nicht bekannt geworden.It is also known to produce hollow bodies from an initially flat material by so-called pressing, with a pressing tool permanently and axially deforming the workpiece rotatingly driven about an axis in the axial direction. If complicated shapes are also to be possible, press products with a form-linked axial advance of the press tool depending on the speed of the workpiece have not become known.

Der Erfindung liegt die Aufgabe zugrunde, eine Trommel der in Rede stehenden Art zur Verfügung zu stellen, die sich einfacher und billiger herstellen läßt und gegebenenfalls auch leichter ist als diejenigen nach dem Stand der Technik.The invention has for its object to provide a drum of the type in question, which is easier and cheaper to manufacture and may also be lighter than those according to the prior art.

Ausgehend von einer Trommel der eingangs genannten Art wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß eine der Trommelstirnseitenwandungen einstückig mit aus dem Blech der Trommelmantelwandung gebildet ist und eine ebenfalls einstückig mit aus dem Blech der Trommelmantelwandung in axialer Richtung davon abstrebend ausgeformte Achsnabe zur Halterung an einer die Trommel durchgreifenden Welle aufweist.Starting from a drum of the type mentioned, this object is achieved according to the invention in that one of the drum end walls is formed in one piece with the sheet of the drum shell wall and also in one piece with the shaft shell formed from the sheet of the drum shell wall in the axial direction thereof to hold on to the Has drum penetrating shaft.

Erfindungsgemäß ist die Trommelmantelwandung der Führungsrillenausbildung für das Seil einstückig mit einer Trommelstirnseitenwandung und an diese anschließender Achsnabe ausgeformt, so daß gegebenenfalls nur noch die andere Trommelstirnseitenwandung - vorzugsweise mit daran einstückig anschließender weiterer Achsnabe - als zusätzliches Teil zur Bildung der Trommel vorgesehen ist. Die Herstellung erfolgt spanlos in einem Drückvorgang, der eine Fließverformung des Bleches bedingt. Dabei ergibt sich im durch die Trommelachse gelegten Längsschnitt im Bereich der Trommelmantelwandung eine im wesentlichen wellenförmig verlaufende Ausformung.According to the drum shell wall of the guide groove formation for the rope is integrally formed with a drum end wall and this adjoining axle hub, so that, if necessary, only the other drum end wall - preferably with an integral subsequent hub hub - is provided as an additional part for forming the drum. The production takes place without cutting in a pressing process, which causes flow deformation of the sheet. This results in an essentially undulating shape in the longitudinal section through the drum axis in the region of the drum casing wall.

In besonders bevorzugter Ausführung ist die Trommelmantelwandung mit der einen Trommelstirnseitenwandung nebst zugeordneter Achsnabe aus einem Blech hergestellt, das aus einer im wesentlichen ebenflächigen Ausgansgestalt durch Fließverformen in die Trommelgestalt überführt ist. Dabei können an den beiden Stirnseitenkanten der Trommelmantelwandung radial abstehende, einstückig anschließende Kragen ausgebildet werden. Die Herstellung geht dann so vor sich, daß das Blech im Bereich dieser Trommelstirnseitenwandung bzw. in einem radial inneren Bereich in der Bearbeitungsmaschine gehalten und vorzugsweise über diesen Halteeingriff in Umdrehung um die Achse der zu fertigenden Trommel versetzt wird. Es ist grundsätzlich möglich, das an dem Blech angreifende Formwerkzeug um diese Trommelachse drehend auszubilden und das Blech ortsfest zu halten, vorzugsweise wird jedoch das Blech in Umdrehung gesetzt, während zumindest das an der Außenfläche der zu bildenden Trommelmantelwandung angreifende Formwerkzeug nicht um die Trommelachse rotiert. Der unmittelbare Angriff eines solchen Werkzeuges, zwischen dem und dem Blech eine Relativbewegung stattfindet, wird dabei in der Regel über einen oder mehrere Rollkörper ausgeführt, um insoweit einen Reibangriff zu vermeiden.In a particularly preferred embodiment, the drum jacket wall with the one drum end wall along with the associated axle hub is made from a sheet metal which is converted from an essentially flat starting shape into the drum shape by flow deformation. Radially protruding, integrally adjoining collars can be formed on the two end edges of the drum shell wall. The production then proceeds in such a way that the sheet metal in the area of this drum front wall or in a radially inner one Area held in the processing machine and is preferably set in rotation about the axis of the drum to be manufactured via this holding engagement. It is fundamentally possible to make the molding tool acting on the sheet metal rotate about this drum axis and to keep the sheet metal stationary, but preferably the sheet metal is set in rotation, while at least the molding tool acting on the outer surface of the drum shell wall to be formed does not rotate about the drum axis. The direct attack of such a tool, between which and the sheet metal a relative movement takes place, is usually carried out via one or more rolling elements in order to avoid a frictional attack.

Das Formwerkzeug weist wenigstens ein Werkzeugteil auf, das an der Außenfläche der zu bildenden Trommelmantelwandung angreift. Je nach Blechmaterial, geforderter Genauigkeit, Fertigungsgeschwindigkeit, maschineller Ausrüstung der Formmaschine und dergleichen kann es vorteilhaft oder notwendig sein, das Blech zuminidest im Zuge der Führungsrillenausformung im Bereich der Trommelmantelwandung zwischen zwei Werkzeugteilen aufzunehmen, die hinsichtlich der Führungsrillen-Positivausbildung an der Außenfläche und deren Negativausbildung an der Innenfläche der Trommelmantelwandung aneinander angepaßt bzw. entsprechend profiliert sind. Beispielsweise kann man eine an ihrer Mantelaußenfläche das Negativprofil der Führungsrille aufweisende, koaxial zur Trommelachse angeordente, der Innenzylinder- und/oder -konusform angepaßt ausgebildete Matrize vorsehen, gegen welche das Blech durch ein an der Außenfläche angreifendes Druckwerkzeugteil zu bewegt und dem Profilverlauf der Führungsrille folgend ausgeprägt wird.The molding tool has at least one tool part which engages on the outer surface of the drum casing wall to be formed. Depending on the sheet material, the required accuracy, production speed, mechanical equipment of the molding machine and the like, it may be advantageous or necessary to take the sheet at least in the course of the guide groove formation in the region of the drum shell wall between two tool parts, which have a positive formation on the outer surface with regard to the guide groove formation and its negative formation are matched to one another on the inner surface of the drum shell wall or are correspondingly profiled. For example, one can provide a die on its outer surface, which has the negative profile of the guide groove, is arranged coaxially to the drum axis and is adapted to the inner cylinder and / or cone shape, against which the sheet metal is moved by a pressure tool part engaging on the outer surface and follows the profile profile of the guide groove is pronounced.

Das Druckwerkzeugteil vollführt dabei einen der Steigung der schraubenförmigen Führungsrille entsprechenden, in Trommelachsrichtung erfolgenden Vorschub in Abhängigkeit von der Relativgeschwindigkeit zwischen Blech und Prägewerkzeug. Die koaxial zur Trommelachse angeordnete Matrize kann dabei zusammen mit dem Blech mit derselben Drehzahl umlaufen. Eine weitere Ausführung kann mit einem Rollensatz aus außenflächig und innenflächig an der Trommelmantelwandung angreifenden profilierten Rollen arbeiten, die aufeinander zu versetzbar und in ihrer Gesamtheit der Führungsrillensteigung folgend mit einer Bewegungskomponente in Trommelachsrichtung zwangsgeführt sind, derart, daß der jeweils dazwischen aufgenommene Blechbereich der Trommelmantelwandung nach Abstimmung von Steigung und Umfangsgeschwindigkeit mit der Führungsrille ausgeformt wird. Anstelle von z.B. nur das Profil einer Windung bzw. das Negativprofil des dazwischen ausgebildeten Steges aufweisenden Rollen können auch Walzen mit zwei oder mehr in Trommelachsrichtung aufeinanderfolgenden Führungsrillen-Steg-Profilen bzw. deren Negativausbildungen verwendet werden, wobei die Vorschubgeschwindigkeit und das Durchmesserverhältnis von Trommel und Walzen entsprechend aufeinander abgestimmt ist. In anderer Ausführung können mehrere in Achsrichtung aufeinanderfolgende Rollen vorgesehen sein, was auch für die Zusammenarbeit von Rollen und Matrize entsprechend gilt. Des weiteren kann ein und dasselbe Formwerkzeug bzw. Werkzeugteil mehrfach nacheinander an der Trommelmantelfläche angreifend über diese hinweggeführt werden.The pressure tool part carries out a feed corresponding to the pitch of the helical guide groove in the drum axis direction depending on the relative speed between the sheet and the stamping tool. The die, which is arranged coaxially to the drum axis, can rotate together with the sheet metal at the same speed. A further embodiment can work with a set of rollers consisting of profiled rollers engaging on the outside and inside of the drum shell wall, which can be moved towards one another and are guided in their entirety following the guide groove pitch with a movement component in the drum axis direction, in such a way that the sheet metal region of the drum shell wall which is accommodated therebetween is coordinated of slope and peripheral speed is formed with the guide groove. Instead of e.g. only the profile of a turn or the negative profile of the rollers having a web formed therebetween can also be used with two or more guide groove-web profiles or their negative designs successive in the drum axis direction, the feed speed and the diameter ratio of the drum and rollers being matched accordingly is. In another embodiment, a plurality of rolls which follow one another in the axial direction can be provided, which also applies correspondingly to the cooperation between rolls and die. Furthermore, one and the same molding tool or tool part can be guided over the drum jacket surface several times in succession, attacking it.

Es kann des weiteren vorteilhaft oder notwendig sein, die Verformung einer - insbesondere im wesentlichen ebenen - Blechscheibe in die Trommelform mit einem insoweit gesonderten Vorwerkzeug durchzuführen, mit welchem das Blech zunächst in die Gestalt der kreiszylindrischen, konischen oder aufeinanderfolgend kreiskonusförmigen Trommelmantelwandung überführt wird, während darauffolgend in einem oder in einem gesondert folgenden Arbeitsgang die Führungsrille und gegebenenfalls die stirnseitigen Kragen und dergleichen ausgeformt werden, welch letztere auch im ersten Drückvorgang ausgebildet werden können. Die Kontur des kreiszylindrischen bzw. konusförmigen Wandungsverlaufs des Trommelmantels entspricht dabei vorzugsweise etwa der Längsschnitt-Verbindungslinie im äußeren, inneren oder dazwischen liegenden Peripheriebereich der Wellenform des herzustellenden Führungsrillenverlaufs der Trommelmantelwandung. Bei einem solchen aufeinanderfolgenden Herstellen zunächst der Trommelwandungskontur und dann der Einprägung der Führungsrille können unterschiedliche Relativgeschwindigkeiten vorgesehen sein, beispielsweise zunächst mit hoher Relativgeschwindigkeit bzw. Umlaufgeschwindigkeit des Blechteiles das Ausformen der Trommelmantelwandungskontur und daran anschließend mit langsamerer Geschwindigkeit das Einprägen der Führungsrille.It can furthermore be advantageous or necessary to deform a - in particular essentially flat - sheet metal disk into the drum shape with a insofar to carry out separate front tool with which the sheet is first converted into the shape of the circular cylindrical, conical or successively circular cone-shaped drum shell wall, while subsequently the guide groove and optionally the front collar and the like are formed in one or in a separate subsequent operation, the latter also in the latter first pressing process can be formed. The contour of the circular cylindrical or conical wall profile of the drum shell preferably corresponds approximately to the longitudinal section connecting line in the outer, inner or intermediate peripheral region of the waveform of the guide groove profile of the drum shell wall to be produced. In such a sequential manufacture of the drum wall contour and then the indentation of the guide groove, different relative speeds can be provided, for example, first of all, with a high relative speed or rotational speed of the sheet metal part, the shaping of the drum shell wall contour and then, at a slower speed, the stamping of the guide groove.

In einem solchen Fall kann der die Führungsrillenausbildung prägende Formwerkzeugteilbereich ohne Rücksicht auf eine in Achsrichtung erfolgende Grobausformung des Bleches getroffen werden, und zwar bis hin zu einer Ausbildung von Profilwalzen, deren eine koaxial zur Trommelachse angeordnet ist und an ihrer Außenmantelfläche das Negativprofil des Führungsrillenverlaufs aufweist und deren andere von radial außen her an dem vorgeformten Blech angreifende Profilwalze das an der Außenfläche der Trommelmantelwandung in Erscheinung tretende Führungsrillen-Steg-Profil aufweist, und zwar mit dem Trommelradius ausgebildet, so daß eine in Trommelachsrichtung weisende Bewegungskomponente eines solchen Rillen-Prägeformteils entbehrlich ist. Wenn hier von Profil die Rede ist, dann im Sinne einer der Profiloberfläche in Längsschnittrichtung folgenden Linie.In such a case, the part of the mold which characterizes the formation of the guide groove can be made without regard to a rough shaping of the sheet in the axial direction, up to the formation of profile rolls, one of which is arranged coaxially to the drum axis and has the negative profile of the guide groove course on its outer surface and whose other from the radially outside on the preformed sheet metal profile roller has the appearance on the outer surface of the drum shell wall guide groove web profile, with the drum radius, so that a in the drum axis direction movement component of such a grooved molded part is unnecessary. If we are talking about profile here, then in the sense of a line following the surface of the profile in the longitudinal direction.

Selbstverständlich sind auch ausgehend von dieser vorkonturierten Walzenausgestaltung vorzunehmende Prägearbeiten, die die Führungsrillenausbildung ausformen, mit anderen Formwerkzeugen wie vorgeschildert ausführbar, beispielsweise also mit Hilfe eines Rollensatzes.Of course, starting from this precontoured roller configuration, embossing work that forms the guide groove formation can also be carried out with other shaping tools as described above, for example with the aid of a roller set.

Bei Herstellen der Trommel durch Drücken mit einer an die Trommelmantelwandung einstückig anschließenden Stirnwandung läßt sich ein an der inneren Oberfläche des Mantels angreifendes Werkzeug ohne weiteres durch die bzw. eine der offenen Stirnseiten entfernen. Dies gilt auch für eine koaxial zur Trommelachse angeordnete Matrize, die dann aufgrund des schraubenförmigen Führungsrillenverlaufes aus dem fertigen Formling herausgedreht werden kann. Dabei ist entsprechendes Spiel vorhanden, weil eine Restrückfederung des Bleches gegenüber der Matrize praktisch unvermeidbar ist.When the drum is manufactured by pressing with an end wall that is integral with the drum shell wall, a tool engaging on the inner surface of the shell can be easily removed through the or one of the open end faces. This also applies to a die arranged coaxially to the drum axis, which is then due to of the helical guide groove course can be unscrewed from the finished molding. There is a corresponding amount of play because a residual spring back of the sheet compared to the die is practically unavoidable.

Diese und weitere bevorzugte Ausführungen der Erfindungen ergeben sich aus den Unteransprüchen, insbesondere unter Bezugnahme auf die in der Zeichnung wiedergegebenen Ausführungsbeispiele, deren nachfolgende Beschreibung die Erfindung näher erläutert. Es zeigen:

Figur 1
eine Seitenansicht eines Ausführungsbeispieles einer Trommel mit einstückig an die Trommelmantelwandung anschließender Trommelstirnseitenwandung, in der oberen Hälfte als Längsschnittbild durch die Trommelachse, und zwar lediglich hinsichtlich der Kontur der geschnittenen Wandungsbereiche;
Figur 2
ein Teilschnittbild der Verbindung zwischen der gesonderten Stirnseitenwandung und dem anschließenden Seitenrandbereich der Trommelmantelwandung entsprechend Figur 1 in anderer Ausführung;
Figur 3
ein Teilschnittbild entsprechend Figur 2 in nochmals abgewandelter Ausführung.
These and other preferred embodiments of the inventions result from the subclaims, in particular with reference to the exemplary embodiments shown in the drawing, the following description of which explains the invention in more detail. Show it:
Figure 1
a side view of an embodiment of a drum with the drum front wall adjoining the drum jacket wall, in the upper half as a longitudinal sectional view through the drum axis, and only with regard to the contour of the cut wall regions;
Figure 2
a partial sectional view of the connection between the separate end face wall and the adjoining side edge region of the drum shell wall according to FIG. 1 in another embodiment;
Figure 3
a partial sectional view corresponding to Figure 2 in a modified version.

Den drei in der Zeichnung wiedergegebenen Ausführungsbeispielen liegt jeweils eine Trommel zugrunde, wie sie vom grundsätzlichen Aufbau her aus Figur 1 ersichtlich ist, d.h. bei der eine der Stirnseitenwandungen mit der Trommelmantelwandung einstückig ausgebildet ist. Dies entspricht der Herstellung der Trommel aus einer etwa ebenen Blechscheibe durch Angriff eines Drückwerkzeuges, das von dieser Stirnseite her in Achsrichtung auf die andere Stirnseitenberandung der Trommel geführt wird, und zwar unter Berücksichtigung des auszubildenden Führungsrillenverlaufes im Bereich der Trommelmantelwandung.The three exemplary embodiments shown in the drawing are each based on a drum, as can be seen in the basic structure from FIG. in which one of the end walls is integrally formed with the drum shell wall. This corresponds to the manufacture of the drum from an approximately flat sheet metal disc by attacking a pressing tool which is guided from this end face in the axial direction to the other end face edge of the drum, taking into account the guide groove course to be formed in the region of the drum shell wall.

Die insgesamt mit 1 bezeichnete Trommel weist eine Trommelmantelwandung 2 auf, die in der Zeichnung zur linken Seite hin einstückig in eine Stirnseitenwandung 3 übergeht, während sie am axial entgegengesetzten Seitenendbereich mit einer gesonderten, d.h. nicht einstückig mit der Trommelmantelwandung 2 vorgesehenen Stirnseitenwandung 4 abgeschlossen ist.The drum, designated as a whole by 1, has a drum casing wall 2 which, in the drawing, integrally merges into an end wall 3 on the left-hand side, while at the axially opposite side end region it has a separate, i.e. is not completed in one piece with the end wall 4 provided on the drum jacket wall 2.

Die einstückig mit der Mantelwandung 2 ausgebildete Stirnseitenwandung 3 weist eine Achsnabe 5 auf, die einteilig mit der Stirnseitenwandung 3 ausgebildet ist und mit im Zuge des Drückvorganges ausgeformt werden kann. Dies ist beispielsweise dadurch möglich, daß eine ebene Blechsscheibe in dem von der Achsnabe 5 umgriffenen Mündungsbereich von einem Drehwerkzeug gegriffen wird, woraufhin ein Drückwerkzeug in Achsrichtung der Trommel von der Einspannstelle aus bewegt wird und die kreiszylindrische Wandung der Achsnabe 5 ausformt. Daran schließt sich dann ohne Drückverformung die Stirnseitenwandung 3 an, woraufhin die weitere Mantelausformung erfolgt. Zu diesem Zwecke ist eine Matrize vorgesehen, die in nicht dargestellter Weise die Stirnseitenwand 3 von der Innenseite der Trommel her abstützt und an ihrer Mantelaußenseite die Negativekontur aufweist, die sich aufgrund des Führungsrillenverlaufes an der Innenseite der Mantelwandung 2 zeigt, wie dies noch näher erläutert werden wird. Ein an der Blechsscheibe angreifendes Drückwerkzeug wird sodann der Kontur der äußeren Oberfläche der Trommelmantelwandung 2 folgend und unter Berücksichtigung der Steigung des Führungsrillenverlaufes mit radialem und axialem Druck der Matrizenkontur folgend derart nachgeführt, daß sich der Führungsrillenverlauf ergibt. Wie aus Figur 1 ersichtlich, kann auch die gesonderte Stirnseitenwandung aus Blech mit einem Nabenansatz 6 ausgestattet sein, der gegebenenfalls auch durch Drückverformen an der Stirnseitenwandung 4 einstückig ausgeformt sein kann. Die Achsnabe 5 ist von einer Schraube 7 durchgriffen, die in eine Bohrung in der nicht dargestellten Hohlachse einer eine Gewichtsausgleichs-Torsionsfeder tragenden Welle eingeschraubt ist, so daß die Trommel axial und verdrehfest mit der Hohlnabe verbunden wird. Ein ähnliche Schraubeneinrichtung kann auch im Bereich des Nabenansatzes 6 vorgesehen sein. Die Achsnabe 5 und/oder der Nabenansatz 6 können auch als gesonderte, mit dem Blech zu verbindende Teile, beispielsweise aus Druckguß ausgebildet sein, vor allem wenn hohe Drehmomente zu übertragen sind.The end face wall 3, which is formed in one piece with the jacket wall 2, has an axle hub 5, which is formed in one piece with the end face wall 3 and can be formed in the course of the pressing process. This is possible, for example, in that a flat sheet-metal washer is gripped by a turning tool in the mouth area encompassed by the axle hub 5, whereupon a pressing tool is moved in the axial direction of the drum from the clamping point and forms the circular-cylindrical wall of the axle hub 5. This is then followed by the end face wall 3 without any compression deformation, whereupon the further cladding is formed. For this purpose, a Matrix is provided, which supports the front side wall 3 from the inside of the drum in a manner not shown and has the negative contour on its outside of the jacket, which is shown on the inside of the jacket wall 2 due to the course of the guide grooves, as will be explained in more detail below. A pressing tool engaging the sheet metal disk is then tracked following the contour of the outer surface of the drum shell wall 2 and taking into account the gradient of the guide groove course with radial and axial pressure following the die contour in such a way that the guide groove course results. As can be seen from FIG. 1, the separate end wall made of sheet metal can also be equipped with a hub extension 6, which can optionally also be formed in one piece by pressing on the end wall 4. The axle hub 5 is penetrated by a screw 7, which is screwed into a bore in the hollow axis, not shown, of a shaft carrying a weight compensation torsion spring, so that the drum is axially and non-rotatably connected to the hollow hub. A similar screw device can also be provided in the area of the hub extension 6. The axle hub 5 and / or the hub extension 6 can also be designed as separate parts to be connected to the sheet, for example made of die-cast, especially when high torques are to be transmitted.

Wie die untere Hälfte der Seitenansicht in Figur 1 und oberhalb der Trommelachse 11 das Schnittbild erkennen läßt, ist die Trommelmantelwandung 2 mit einer schraubenförmigen Führungsrille 8 versehen, deren zur Aufnahme eines nicht dargestellten Seiles dienende Rillenausbildung an der Außenfläche 9 der Trommelmantelwandung 2 in Erscheinung tritt. Die Führungsrille 8 wird in das Blech der Trommelmantelwandung 2 unter Fließverformung eingedrückt, so daß in material- und gewichtssparender Weise die Wandung 2 im Längsschnitt gesehen einen etwa welligen Verlauf erhält, wie dies aus der oberen Hälfte der Figur 1 ersichtlich ist. Die an der Außenfläche der Wandung 2 in Erscheinung tretenden Wellentäler 10 bilden die Aufnahmebereiche der Führungsrillenwindungen für den Eingriff des nicht dargestellten Seiles, während die von der Trommelachse 11 her gesehen innere Oberfläche 12 der Trommelmantelwandung 2 Wellentäler 13 aufweist, die in Radialrichtung gesehen den hinsichtlich der Außenfläche 9 erhabenen Zonen 14 gegenüberliegen, die die Wellentäler 10 der Führungsrillenwindungen voneinander trennen. Die aus der oberen Querschnittsdarstellung der Figur 1 ersichtlichen Wellentäler 10 und erhabenen Zonen 14 gehen im Zuge des Verlaufs der Führungsrillen 8 ineinander zu geschlossenen Umfangsbereichen über.As the lower half of the side view in FIG. 1 and above the drum axis 11 shows the sectional view, the drum casing wall 2 is provided with a helical guide groove 8, the groove formation of which serves to accommodate a rope (not shown) on the outer surface 9 of the drum casing wall 2. The guide groove 8 is pressed into the sheet of the drum shell wall 2 with flow deformation, so that the wall 2 seen in longitudinal section in a material and weight-saving manner roughly wavy course, as can be seen from the upper half of Figure 1. The troughs 10 appearing on the outer surface of the wall 2 form the receiving areas of the guide groove windings for the engagement of the rope (not shown), while the inner surface 12 of the drum shell wall 2 seen from the drum axis 11 has troughs 13 which, viewed in the radial direction, have the Outer surface 9 lie opposite zones 14, which separate the troughs 10 of the guide groove windings from one another. The wave troughs 10 and raised zones 14 which can be seen from the upper cross-sectional illustration in FIG. 1 merge into closed peripheral regions in the course of the course of the guide grooves 8.

Nach links hin gesehen ist die Trommelmantelwandung 2 an der an die einstückig ausgebildete Stirnseitenwandung 3 anschließende Seitenkante 17 mit einem radial vorstehenden Kragen 15 versehen, der den Aufnahmebereich der Trommelmantelwandung 2 für das Seil seitlich entsprechend begrenzt und den einstückigen Übergang zwischen der Mantelwandung 2 und der Stirnseitenwandung 3 bildet. Die axial gesehen gegenüberliegende Seitenkante 18 ist ebenfalls in Form eines Kragens 16 radial nach außen vorstehend ausgebildet und dient der Befestigung der gesondert ausgebildeten Stirnseitenwandung 4. Im Ausführungsbeispiel gemäß Figur 1 ist diese Stirnseitenwandung 4 durch über den Umfang verteilte Punktschweißstellen 19 mit dem Kragen 16 der Seitenkante 18 der Trommelmantelwandung 2 fest verbunden. Auf diese Weise wird die Trommel beidstirnseitig an der nicht dargestellten Hohlwelle abgestützt.Seen to the left, the drum jacket wall 2 is provided on the side edge 17 adjoining the one-piece front wall 3 with a radially projecting collar 15, which correspondingly laterally delimits the receiving area of the drum jacket wall 2 for the rope and the one-piece transition between the jacket wall 2 and the front wall 3 forms. The axially opposite side edge 18 is also formed in the form of a collar 16 projecting radially outward and serves to fasten the separately formed end wall 4. In the exemplary embodiment according to FIG. 1, this end wall 4 is provided with the collar 16 of the side edge by spot welds 19 distributed over the circumference 18 of the drum shell wall 2 firmly connected. In this way, the drum is supported on both ends of the hollow shaft, not shown.

In Figur 2 ist ein Teilschnitt des oberen rechten Verbindungsbereiches zwischen der Trommelmantelwandung 2 und der gesonderten Stirnseitenwandung 4 wiedergegeben, der eine andere Verbindungsart anstelle des Schweißens verdeutlicht. Im Bereich der Seitenkante 18 der Trommelmantelwandung 2 ist der radial abragende Kragen 16′ länger ausgebildet und nach Aufbringen der gesonderten Stirnseite 4 um deren Umfangskante 21 herumgebördelt, welche Umbördelung mit 20 bezeichnet ist. Diese Umbördelung kann über den Umfang hinweg durchgehend ausgebildet oder aber in über den Umfang verteilten Abschnitten getrennt ausgeführt sein.FIG. 2 shows a partial section of the upper right connection area between the drum jacket wall 2 and the separate end wall 4, which illustrates another type of connection instead of welding. In the region of the side edge 18 of the drum shell wall 2, the radially projecting collar 16 'is longer and, after the separate end face 4 has been applied, is flanged around its peripheral edge 21, which flanging is denoted by 20. This flanging can be designed to be continuous over the circumference or to be carried out separately in sections distributed over the circumference.

Figur 3 gibt einen der Figur 2 entsprechenden Teilschnitt wieder, in welchem die Verbindung der Seitenkante 18 mit der äußeren Umfangskante 21′ der gesonderten Stirnseitenwandung 4 mit Hilfe von über den Umfang verteilten Druckfügungsausbildungen 22 bewerkstelligt ist. Im dargestellten Ausführungsbeispiel sind die Druckfügungsausbildungen 22 von der Umfangskante 21′ der Stirnseitenwandung 4 her in den Kragen 16˝ der Seitenkante 18 der Trommelmantelwandung 2 ausgeführt, so daß sich zur axialen Trommelmitte hin gesehen vorspringende Bereiche ergeben. Um das Auf- und Ablaufen des Seiles nicht zu behindern, sind die Umfangskante 21′ der Stirnseitenwandung 4 und der Kragen 16˝ leicht axial von der axialen Mitte der Trommel her gesehen nach außen abgebogen. Der Kragen 16˝ weist darüber hinaus eine in axialer Richtung abstehende Zentrierkante für die Aufnahme der Stirnseitenwandung 4 auf.Figure 3 shows a partial section corresponding to Figure 2, in which the connection of the side edge 18 with the outer peripheral edge 21 'of the separate end wall 4 is accomplished with the aid of pressure-forming formations 22 distributed over the circumference. In the illustrated embodiment, the pressure-forming formations 22 are carried out from the peripheral edge 21 'of the end wall 4 in the collar 16' of the side edge 18 of the drum shell wall 2, so that there are projecting areas towards the axial center of the drum. In order not to hinder the up and down of the rope, the peripheral edge 21 'of the end wall 4 and the collar 16' are slightly bent axially as seen from the axial center of the drum outwards. The collar 16˝ also has an axially projecting centering edge for receiving the end wall 4.

Die insoweit in ihrer Gesamtheit in Figur 1 wiedergegebene Trommel dient der Aufnahme eines Seiles, das mit seinem von der Trommel ablaufenden Ende an einem überkopf bewegbaren Torblatt befestigt ist, um mit Hilfe einer an der nicht dargestellten, mit der Trommel verdrehfest verbundenen Hohlwelle kraftschlüssig angreifenden Torsionsfeder eine Gewichtsausgleichseinrichtung für das Torblatt zu schaffen, wie dies im Stand der Technik bekannt ist. Zum Ausgleich der Kraft-Weg-Charakteristik der Torsionsfeder ist im vorliegenden Ausführungsbeispiel die Trommel in einen ersten Bereich 23 kreiszylinderförmig ausgebildet, woran sich ein konischer Bereich 24 anschließt, der von dem kreiszylindrischen Bereich 23 aus gesehen mit progressiv ansteigendem Durchmesser ausgebildet ist.The drum shown in its entirety in FIG. 1 is used to hold a rope that is connected to its end running from the drum is fastened to an overhead door leaf in order to create a weight compensation device for the door leaf with the aid of a torsion spring which engages non-positively on the hollow shaft, which is connected in a rotationally fixed manner to the drum, as is known in the prior art. To compensate for the force-displacement characteristic of the torsion spring, in the present exemplary embodiment, the drum is designed in the form of a circular cylinder in a first region 23, which is followed by a conical region 24 which, seen from the circular-cylindrical region 23, is formed with a progressively increasing diameter.

Claims (17)

  1. A drum for receiving a rope of an actuating and/or weight-balancing device for a door leaf on its outer circumferential surface, which drum has, in its circumferential and axial direction, a screw-like spiral guide-groove (8), in which the wound-up rope, guided in one layer, is received, and whose circumferential wall (2) consists of a metal sheet into which the guide groove (8) is pressed such that within the region of the circumferential wall (2) of the drum, when viewed in cross-section through the drum axis (11), the sheet metal is constructed so as to extend in a substantially wave-like manner, the wave troughs appearing on the circumferential outer surface (9) providing the cross-section of the guide groove (8) and the wave troughs (10) present on the circumferential inner surface (12), facing the drum axis (11), being positioned radially opposite the elevated zones (14) between the adjoining groove windings, characterised in that one of the drum end walls (3) is formed from the sheet metal of the circumferential wall (2) of the drum so as to be integral with said circumferential wall and has a hub (5) for supporting a shaft passing through the drum, said hub also being formed from the sheet metal of the circumferential wall (2) of the drum so as to be integral with said circumferential wall and extending away from said circumferential wall in the axial direction.
  2. A drum according to Claim 1, characterised in that the circumferential wall (2) of the drum is provided, on the end edges (17, 18), with radially projecting, integrally adjoining collars (15, 16), and is made of a metal sheet converted from a substantially flat initial shape (metal disc) into the circumferential shape by means of flow deformation (pressing).
  3. A drum according to either Claim 1 or 2, characterised in that at least one of the drum end walls (4) is in the form of a separate metal disc which is secured to the adjoining side edge (18 or collar 16) of the circumferential wall (2) of the drum.
  4. A drum according to Claim 3, characterised in that the separate drum end wall (4) is secured to the side edge (18 or collar 16) of the circumferential wall (2) of the drum by welding, more particularly by spot-welding (19) distributed over the circumference.
  5. A drum according to Claim 3, characterised in that the separate drum end wall (4) is secured by flanging (20) the side edge (18 or collar 16) of the circumferential wall (2) of the drum over the outer circumferential edge (21) of the drum end wall (4).
  6. A drum according to Claim 3, characterised in that the separate end wall (4) is secured to the side edge (18 or collar 16') of the circumferential wall (2) of the drum by pressure joining (22), more particularly distributed over the circumference.
  7. A drum according to one of Claims 1 to 6, characterised in that the circumferential wall (2) of the drum is circular-cylindrical, conical or circular-cylindrical and conical in two successive portions (23) (24) in the axial direction of the drum.
  8. A drum according to Claim 7, characterised in that the cone (24), when viewed in the axial direction of the drum, is constructed with a progressively increasing diameter.
  9. A drum according to one of Claims 1 to 8, characterised in that the sheet metal is made of steel, stainless steel or refined alloy steel and/or is surface-treated, for example galvanised.
  10. A process for producing a drum according to one of Claims 1 to 9, characterised in that a metal disc and a moulding tool pressingly engaging on said disc are moved, relative to each other, at least in the circumferential direction with respect to the drum axis, using at least one tool part, such that as a result of this pressing action, initially the hub is formed with a circular-cylindrical cross-section and then, after leaving a disc portion as an end wall extending substantially in the radial plane, the drum wall is formed with an axially spiral guide groove, said drum wall having a larger diameter than the hub.
  11. A process according to Claim 10, characterised in that the metal disc is connected to a lathe tool within the region of one end wall of the drum to be machined, said lathe tool rotating the sheet disc about the drum axis, relative to the moulding tool, following the moulding action.
  12. A process according to Claim 10 or 11, characterised in that the sheet disc is initially pressed into the drum shape by a pilot tool part of the moulding tool movable initially in or additionally in the direction of the drum axis and then provided with the screw-guide groove by means of an embossing tool.
  13. A process according to one of Claims 10 to 12, characterised in that the circumferential wall of the drum is received between two profile mill cutters, one of which provides the guide groove path to be embossed on the outside of the circumferential wall of the drum and the other on the undulatory path appearing on the inside face of the drum wall and may be operated as a roller rotating so as to be axially parallel to the drum axis or as a die arranged coaxially to the drum axis.
  14. A process according to one of Claims 10 to 12, characterised in that the moulding tool is used with a moulding die engaging on one circumferential drum face, preferably on the circumferential drum inner face of the sheet metal and a moulding tool part engaging on the other face of the circumferential drum wall, said moulding tool part being displaced, in relation to the sheet metal, in the axial direction of the drum according to the gradient of the screw-like groove path.
  15. A process according to one of Claims 10 to 12, characterised in that the moulding tool is used together with a set of rollers engaging on either side of the circumferential wall of the drum, which rollers are movable backwards and forwards at right angles to the drum axis and are displaced, in relation to the sheet metal, in the axial direction of the drum according to the gradient of the screw-like groove path.
  16. A process according to one of Claims 10 to 15, characterised in that the moulding tool or at least one of its parts embossing the guide groove is guided several times over the circumferential wall of the drum so as to engage thereon repeatedly, or that a plurality of moulding tools or moulding tool parts embossing the guide groove are successively guided over the circumferential wall of the drum so as to engage thereon embossingly.
  17. A process according to one of Claims 10 to 16, characterised in that the correspondingly open end of the circumferential wall member is provided with a disc-shaped metal sheet which is connected, within the region of its outer periphery, with the associated end border or the collar of the circumferential wall of the drum provided there, for example, by means of welding, flanging or pressure joining, whereby the end may be provided with hub shoulders optionally formed by pressing.
EP90101024A 1989-01-27 1990-01-18 Cable drum Expired - Lifetime EP0379977B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3902496 1989-01-27
DE3902496A DE3902496A1 (en) 1989-01-27 1989-01-27 DRUM FOR RECEIVING A ROPE

Publications (2)

Publication Number Publication Date
EP0379977A1 EP0379977A1 (en) 1990-08-01
EP0379977B1 true EP0379977B1 (en) 1994-06-01

Family

ID=6372952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101024A Expired - Lifetime EP0379977B1 (en) 1989-01-27 1990-01-18 Cable drum

Country Status (7)

Country Link
EP (1) EP0379977B1 (en)
JP (1) JP2754070B2 (en)
AT (1) ATE106358T1 (en)
CA (1) CA2008302A1 (en)
DE (2) DE3902496A1 (en)
DK (1) DK0379977T3 (en)
ES (1) ES2054105T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3959403A4 (en) * 2019-04-26 2023-04-19 Engineered Hardware, LLC Drive drum for overhead doors

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WO1997011021A1 (en) * 1995-09-20 1997-03-27 Hitachi, Ltd. Crane and rope changing method
JPH10121873A (en) * 1996-10-23 1998-05-12 Hisahiro Igarashi Balance type shutter and balance device thereof
WO2008077400A1 (en) 2006-12-22 2008-07-03 Vkr Holding A/S A winding reel and a screening device
ITTO20130365A1 (en) * 2013-05-07 2013-08-06 Kite Gen Res Srl PERFECTED PULLEY FOR HIGH EFFICIENCY WINCH.
DE102017128163A1 (en) * 2017-11-28 2019-05-29 Liebherr-Components Biberach Gmbh Cable drum and method for its production
US20210167585A1 (en) * 2019-12-01 2021-06-03 Anthony Pickart Unitary fastener and cable guidance devices for helicopter block pulleys and methods of assembly and use
CN113148885A (en) * 2020-12-30 2021-07-23 上海凯波水下工程有限公司 Marine winch and ship
CN113387231B (en) * 2021-05-21 2023-02-03 明创慧远(长沙)矿山设计研究院有限公司 Wireless remote control cable winch equipment

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DE172215C (en) *
US1429491A (en) * 1920-10-27 1922-09-19 Davidson Arthur Pulley
DE393583C (en) * 1922-11-08 1924-04-12 Georg Schoenborn Rope drum
DE645076C (en) * 1935-08-15 1937-05-21 Demag Akt Ges Winding drum
CH282493A (en) * 1950-08-24 1952-04-30 Werhonig Heinrich Method for manufacturing a rope drum.
FR1373178A (en) * 1963-08-14 1964-09-25 M A G Materiels Agra Improved threading process by roller embossing, means of its production and elements obtained by this process
FR1527259A (en) * 1966-05-16 1968-05-31 Vulcan Electrics Proprietary L Method and machine for the manufacture of flexible pipes
FR1542144A (en) * 1967-10-31 1968-10-11 Calumet & Hecla Apparatus for forming helical corrugations in flexible metal pipes
US4055876A (en) * 1976-06-07 1977-11-01 Scovill Manufacturing Company Slider for invisible-type slide fastener
JPS54108343A (en) * 1978-02-15 1979-08-24 Hitachi Ltd Drum for hoist
DE2943846A1 (en) * 1979-10-31 1981-05-14 Walter 4150 Krefeld Staudenmaier Garage door counterbalancing mechanism - has rope falls supporting load and counterweight reeved round separate pulley sections
US4484613A (en) * 1981-10-01 1984-11-27 Walter Timoschuk Wire drum for door

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3959403A4 (en) * 2019-04-26 2023-04-19 Engineered Hardware, LLC Drive drum for overhead doors

Also Published As

Publication number Publication date
ES2054105T3 (en) 1994-08-01
JPH02233499A (en) 1990-09-17
EP0379977A1 (en) 1990-08-01
DE3902496A1 (en) 1990-08-09
JP2754070B2 (en) 1998-05-20
DE59005847D1 (en) 1994-07-07
CA2008302A1 (en) 1990-07-27
ATE106358T1 (en) 1994-06-15
DK0379977T3 (en) 1994-06-20

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