Method for manufacturing a roller shutter profile

Abstract

Method for manufacturing a cold-formed roller shutter profile by providing a metal sheet strip with a cold-formed curved contour in a tool, forming lateral hinge eyes on the roller shutter profile in the tool, and creating punched sections at predetermined intervals in the curved area of ​​the cold-formed roller shutter profile.

Description

[0001] The invention relates to a method for producing a rolling grille profile.

[0002] Rolling grilles are often made of steel or aluminum profiles and are used, among other things, as door closures for garages or industrial buildings.

[0003] DE 199 03 803 A1 discloses a rolling grille and a method for producing a rolling grille. According to the method, grille bars are bent using a punch and a die, with connecting links being pushed onto the bars and arranged at predefined intervals. The bars are then pivoted apart to form a rolling grille.

[0004] DE 31 51 629 A1 discloses a curtain for roller doors, roller shutters, blinds or the like, comprising individual metal rods which articulate with one another within a hinge without an articulated axis, wherein above and below a substantially flat visible side of each metal rod, hinge grooves are formed by deformations of its edge zones into claws, wherein the upper claw - with respect to the visible side, in cross-section at least partially curved inwards and having a bend of approximately 180° - lies in the lower hinge groove - formed from a claw which is curved inwards several times - of a metal rod immediately adjacent to this metal rod, wherein the lower claw adjoins the inner leg of an approximately V-shaped bend and this leg is part of the inner wall of the hinge.

[0005] DE 29 02 592 B1 discloses a curtain for roller doors or the like, consisting of metal bars with articulated, interlocking joint connecting means and with openings provided in their vertical walls, into which translucent plastic panes are inserted, which are each held in a form-fitting manner on at least two opposite edge regions of each opening by elements formed integrally with the panes.

[0006] DE 28 08 177 A1 deals with a roller shutter slat, in particular for roller doors, with joint parts running along two longitudinal edges which, when interlocked with two adjacent roller shutter slats, form a joint connection which enables the rotational movement required for rolling up.

[0007] DE 36 38 969 A1 discloses a curtain for roller doors, consisting of horizontal profile bars which are connected to one another in an articulated manner and are provided with window openings and have grooves running longitudinally on their rear side on both sides of the window openings for receiving the edges of translucent, strip-shaped window inserts which can be inserted from the ends of the profile bars, and with locking parts anchored to the profile bars which prevent mutual displacement of adjacent profile bars by means of at least one head covering a profile bar joint and which prevent the window inserts from being pushed out.

[0008] DE 79 27 335 U1 describes a profile slat for roller shutter doors, consisting of a double blunt-angled central section with upper and lower rolled edges of different diameters.

[0009] DE 86 19 414 U1 discloses a rolling grille or similar covering device for door and window openings made of profiles pushed into one another, in particular light metal profiles, each of which is provided on one longitudinal edge with a cross-sectionally hook-like longitudinal formation which forms a joint with a groove profile of the adjoining longitudinal edge of the adjacent profile which partially surrounds it.

[0010] DE 20 2012 001 153 U1 describes a roller shutter profile which consists exclusively of highly transparent material, preferably polycarbonate.

[0011] DE 10 46 295 B1 describes a rolling grille, in particular made of light metal, with parallel cross struts guided in lateral guide rails, each of which has two continuous longitudinal ribs and grooves formed between these and the remaining part of the cross bar, and with connecting webs serving for the articulated connection of adjacent cross bars, which are arranged at intervals between the cross bars and can be inserted with their end parts into a groove of a cross bar from the side when the rolling grille is assembled, and whose spacing can be fixed by means of spacers which can be inserted into the cross bars.

[0012] Finally, the reference "Doris Braselmann: Rolltorprofil 1.1460, In: Ferdinand Braselmann.de - Vielfalt mit Profil (created on May 25, 2018). 2.-Company brochure https: / / jr-tortechnik.de / shop / media / 7e / 35 / a9 / 1702988952 / prospekt_fenster_lamelle_1460.pdf" reveals a roller door profile suitable for single-walled roller doors with increased loads, e.g., due to large door dimensions or high wind loads.

[0013] The aim of the subject matter of the invention is to provide a method for producing a rolling grille profile, in which the rolling grille profiles produced thereafter have the greatest possible stability.

[0014] In addition, a rolling grille profile manufactured using this process is to be protected.

[0015] The aim is achieved by a method for producing a cold-formed rolling grille profile in which a metal sheet strip is provided with a cold-formed curved contour in a tool, lateral hinge eyes are formed on the rolling grille profile in the tool and punched-out sections are produced in the curved area of ​​the cold-formed rolling grille profile with predetermined distances, wherein in the forming stations, in particular the roller stations, different pressure forces are exerted on the rolling grille profile in such a way that the edge areas are compressed more strongly than the central area.

[0016] Advantageous further developments of the method according to the invention can be found in the associated subclaims relating to the method.

[0017] This aim is also achieved by a rolling grille profile for rolling grilles, produced according to the method according to the invention, comprising a curved central region which is provided with a plurality of punched-out sections, wherein hinge eyes are formed on the lateral edge regions of the rolling grille profile.

[0018] Advantageous further developments of the rolling grille profile according to the invention can be found in the corresponding subclaims.

[0019] According to the process, at least the production steps of cold forming and forming the lateral hinge eyes are carried out in a single pass within the same tool. Forming stations, particularly roller stations, are used here.

[0020] It is advantageous if different pressure forces are exerted on the rolling grille profile in the forming stations, in particular the roller stations, in such a way that the edge areas are compacted more strongly than the central area.

[0021] It is further advantageous if, when using rollers as deformation elements, the roll gap in the central area of ​​the rolling grille profiles corresponds approximately to the material thickness of the rolling grille profiles, while in the edge areas the roll gap is reduced by approximately 5 - 20%, in particular 5 - 10%.

[0022] The “punching” processing step can be carried out in the same or a subsequent tool, if required.

[0023] The sheet metal strip is preferably unwound from a coil located upstream of the first tool and passed through the respective stations forming the tool(s) in a continuous process.

[0024] In a subsequent step, the finished and punched rolling grille profile is cut to a specified length using a cutting tool.

[0025] Subsequently, several profiles are operatively connected to form a rolling grille. Plug-like components can be inserted into the free end areas of the hinge eyes if required. If such components are provided, they can be detachably connected, particularly screwed, to the corresponding rolling grille profile.

[0026] These plug-like components can simply form end elements or can be designed as storm hook end pieces, which are positioned in corresponding guides when the rolling grille is wound up and unwound, so that when forces act on the rolling grille during winding up and unwinding, it cannot be torn out of the guides.

[0027] The subject matter of the invention is illustrated by an exemplary embodiment in the drawings and is described as follows. They show: Fig. 1 Schematic diagram of the manufacturing process for rolling grille profiles according to the invention; Fig. 2 and Fig. 3 Schematic representation of the manufacturing process according to the invention; Fig. 4 Cross section through the rolling grille profile according to the invention; Fig. 5 Schematic diagram of different compaction areas of the rolling grille profile; Fig. 6 Representation of several rolling grille profiles that are operatively connected to one another; Fig. 7 Representation of a component designed as a plug; Fig. 8 Illustration of a plug-like component designed as a storm anchor; Fig. 9 Schematic diagram of a rolling grille composed of a large number of rolling grille profiles.

[0028] Fig. Figure 1 shows a schematic diagram of the manufacturing process according to the invention. A production line consisting of several tools 1, 2, 3 is visible. A wound coil 4 is positioned in front of the first tool 1, from which metal strips 5 are unwound in a continuous process (arrow). The first tool 1 contains deformation elements 6 formed by rollers or rolls, which cold-form the metal strip 5 into a predeterminable shape. This is shown in the Fig. 2 and Fig. 3 is shown in more detail. In the follow-up tool 2, sections not visible here are punched out. Using a cutting tool 3', the metal strip 5 is cut to a predefined length, whereby the individually cut roller grille profiles 7 can then be temporarily stored.

[0029] The Fig. 2 and Fig. 3 show in different representations the development of the Fig. 1. The starting material is the metal strip 5, which is cold-formed in the area of ​​the tool 1 (not shown here) over several processing steps to form the final profile 7. First, a curved central region 8 is formed on the metal strip 5 in the area of ​​the tool 1. In subsequent forming steps, so-called hinge eyes 11 are formed in the lateral edge regions 9, 10 of the metal strip within the same tool.

[0030] Fig. Figure 4 shows a schematic diagram of a cross-section through the finished rolling grille profile 7. The central curved area 8 and the lateral eye hinges 11 can be seen.

[0031] Fig. 5 shows a schematic diagram of different compression areas of the rolling grille profile 7 as well as an enlarged detail A. Fig. The deformation elements 6, designed as rollers and shown in Figure 1, are adjusted with regard to the pressure forces exerted on the rolling grille profile 7 in such a way that a predeterminable pressure force is generated in the central region 8, while the edge regions 9, 10 are subjected to a higher contact pressure of the deformation elements 6. The roll gap of the deformation elements 6, designed as rollers, corresponds approximately to the material thickness of the rolling grille profile 7 in the central region 8 of the rolling grille profile 7. In order to achieve a corresponding compaction of the edge regions 9, 10 while simultaneously smoothing the surface, the roll gap is reduced by 5 - 20%, in particular 5 - 10%. This is shown in the enlarged detail A. From the edge regions 9, 10, as in the Fig. 2 to 4 - the hinge eyes 11 are formed. By generating different compression zones 8, 9 in the area of ​​the rolling grille profile 7, a quieter running of the rolling grille profile 7 can be ensured during the subsequent winding and unwinding of a rolling grille door. The dimensions of the different compression zones can be seen in cross-section A. The cross-sectional area 8' is larger than the cross-sectional area 9', which is subject to the higher contact pressure.

[0032] Fig. Figure 6 shows several individual rolling grille profiles 7 operatively connected to one another. Visible here are the punched-out sections 12 introduced using tool 2. The punched-out sections 12 are inserted at a predefined distance within the rolling grille profiles 7. The curved areas 8 are formed here only by webs. Plug-like components 14 are inserted into the free end areas 13 of the respective rolling grille profiles 7, which can be detachably connected, for example, by screwing, to the respective rolling grille profile 7.

[0033] Fig. Figure 7 shows such a component 14 as an individual illustration. Visible are a thickened projection 15 and an elongated section 16, with screw through holes 17 provided in the elongated section 16.

[0034] Fig. 8 shows an alternative component 14', which in this example is designed as a so-called storm hook end piece.

[0035] Fig. 9 shows a schematic diagram of a finished rolling grille 18, which is composed of a plurality of cold-formed rolling grille profiles 7 provided with punched-out portions 12 and can form, for example, a door closure element. List of reference symbols 1 tool 2 tools 3 tools 3' cutting tool 4 coils 5 metal strips 6 Deformation element 7 Rolling grille profile 8 Middle range 8' cross-sectional area middle area 9 Marginal area 9' cross-sectional area edge areas 10 Marginal area 10' cross-sectional area edge areas 11 Hinge eye 12 punched section 13 End area 14 plug-like component 14' alternative component 15 thickened base 16 elongated section 17 Screw through hole 18 rolling grilles

Claims

[1] Method for producing a cold-formed rolling grille profile (7), in which a metal sheet strip (5) is provided with a cold-formed curved contour in a tool (1), lateral hinge eyes (11) are formed on the rolling grille profile (7) in the tool (1) and punched-out sections (12) are produced in the curved region of the cold-formed rolling grille profile (7) at predetermined intervals, wherein in the forming stations, in particular the roller stations, different pressure forces are exerted on the rolling grille profile (7) in such a way that the edge regions (9, 10) are compressed more strongly than the central region (8). [2] Method according to claim 1, characterized by that at least the production steps of cold forming and forming the hinge eyes (11) are carried out in a continuous process within the same tool (1). [3] Method according to claim 1 or 2, characterized bythat the cold forming of the rolling grille profile (7) is brought about by several forming stations arranged one behind the other, in particular roller stations. [4] Method according to one of claims 1 to 3, characterized by that when using rollers as deformation elements (6), the roll gap in the central region (8) of the rolling grille profiles (7) corresponds approximately to the material thickness of the rolling grille profiles (7), while in the edge regions (9, 10) the roll gap is reduced by approximately 5 - 20%, in particular 5 - 10%. [5] Method according to one of claims 1 to 4, characterized by that the metal sheet strip (5) is unwound from a coil (4) located in front of the tool (1). [6] Method according to one of claims 1 to 5, characterized by that the finished rolling grille profile (7) is cut to a predefined length after punching. [7] Method according to one of claims 1 to 6, characterized bythat several rolling grille profiles (7) are brought into operative connection with one another to form a rolling grille (18). [8] Method according to one of claims 1 to 7, characterized by that plug-like components (14,14') are inserted into the free end regions (13) of the hinge eyes (11). [9] Method according to one of claims 1 to 8, characterized by that the plug-like components (14) are detachably connected, in particular riveted, to the associated rolling grille profile (7). [10] Rolling grille profile for rolling grilles (18), manufactured according to the method according to one of claims 1 to 9, comprising a curved central region (8) which is provided with a plurality of punched-out sections (12), hinge eyes (11) being formed on the lateral edge regions (9, 10). [11] Rolling grille profile according to claim 10, characterized bythat plug-like components (14, 14') are inserted into the free end regions (13) of the respective rolling grille profile (7). [12] Rolling grille profile according to claim 11 or 13, characterized by that the components (14,14') are detachably connected, in particular riveted, to the associated rolling grille profile (7). [13] Rolling grille profile according to one of claims 11 to 12, characterized by that the component (14,14') is designed as a storm hook end piece.

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