EP0044880A1 - Slat for roller shutter or for a multi-section overhead door; installation and method for making such a slat - Google Patents

Abstract

1. Slat for a roller shutter or multi-section over-head door comprising a hollow section (2; 92, 93) formed from two sheet metal shells (7, 8) of which the hollow space (3) is filled with a heat-insulating material having hinge elements (5, 6) provided on the longitudinal sides of the hollow section, and having two slots (9) which extend, next to the two hinge elements, along the length of the slat and which are bounded by side-pieces (12) which are bent in towards the hollow space, characterised by the following features : (a) the slots (9) are located on the broad side of the inner sheet metal shell (7) of the slat, (b) the slots (9) are bridged by narrow cross-pieces (11) formed by breaks in the slots, (c) the side-pieces (12) of the slots (9) have, on the hollow space side at the root of the bend, notches (15) which extend parallel to the slot.

Description

The invention relates to a door leaf for a ceiling link or roller door consisting of a hollow profile formed by two sheet metal shells, the cavity of which is filled with a heat-insulating mass, with joint elements provided on the long sides of the hollow profile, and with two next to the two joint elements over the length of the Gates extending columns, which are bounded by legs bent towards the cavity side.

Such a door leaf is known (DE-OS 27 35 899). In this known door leaf, the two sheet metal shells are provided with bends on their long sides provided with the joint elements. In the area of the bends there is a gap between the two sheet metal shells, through which a cold bridge is avoided. The gap is bridged by a plastic membrane that has a low thermal conductivity. The two sheet metal shells are held together in that the heat-insulating foam mass engages behind the bends.

DE-OS 27 35 899 can not be seen how the known door leaf is to be made, but it is obvious that the assembly of the two sheet metal. shelling, the attachment of the joint elements and the application of the plastic membrane are labor-intensive and time-consuming and are not suitable for a continuous manufacturing process.

The invention has for its object to design the door leaf of the type described above so that it is suitable for a continuously running automatic manufacturing process.

• a) die Spalte befinden sich auf einer Breitseite des Torblattes,
• b) die Spalte sind von schmalen Stegen überbrückt,
• c) die Spalte sind von U-förmig aufeinanderzulaufenden zur Hohlraumseite eingebogenen Schenkeln begrenzt, die auf der Hohlraumseite an die Biegewurzel parallel zum Spalt verlaufende Kerben aufweisen.

The object is achieved according to the invention by the following features:

• a) the gaps are on a broad side of the door leaf,
• b) the gaps are bridged by narrow bars,
• c) the gaps are delimited by legs which are bent toward one another in a U-shape and are bent toward the cavity side and which have notches running parallel to the gap on the cavity root on the bending root.

Characteristic a) makes it possible to press in the gaps by means of cutting rollers, while the door leaf is supported with the other side against the pressure of the split rollers by simple contact, for example on a lower belt, without the need for special holding means to be carried. This is not possible if, as in the known door leaf, the gaps are provided on the long sides provided with the joint elements.

Feature b) prevents the part of the sheet metal shell in question, which is located between the gaps, from being bent by the deformation pressure of the splitting rollers; moreover, this part cannot fall off the heat-insulating mass when the adhesive strength decreases.

Feature c) also contributes to the production of the gaps by a chipless pressing in by means of splitting rollers, which are particularly suitable for a continuously running automatic manufacturing process.

To manufacture the door leaf according to the invention, the sheet metal shell to be provided with the gaps can be attached next to the two on the inside of the cavity Notches each in the middle between the notches on the side facing away from the cavity, another notch can be made. This further notch makes it easier to press in the gap with the splitting rollers.

A preferred embodiment of the method for producing the door leaves according to the invention provides that two metal strips, which are wound on metal strip rolls, are drawn off from an infeed frame and are formed in a two-tier roll forming machine to form the hollow metal profile. In this roll forming machine, one of the strips is provided with the beads and the notches located therein.

In a further roll forming machine, the undersides of the pre-profiled strips are then pressed together by pressure rollers and their upper sides are held apart by an expanding lug or an expanding roller. In the vicinity of this expanding tool, the outlet nozzle of a plastic foam machine is attached, through which a curable plastic foam material, for example polyurethane, is filled between the belts. This plastic foam mass is the heat-insulating material. After the plastic foam mass has been filled in, the metal strips are pressed together at the top in the roll-forming machine and fastened to one another, for example, by appropriate bending.

In order to prevent or compensate for warping or twisting of the metal strips closed to form a hollow profile, the closed metal strips pass through an alignment section before they are passed on to the curing section in which the plastic cures.

At the end of the curing section there is a length measuring device that controls an automatic cutting machine. The cutting machine is equipped with a floating saw, which allows the moving metal strip to be cut into individual metal hollow profiles of the desired length. In order to avoid a jam inside this saw, the sawn-off individual pieces are pulled out of the cutting machine at an accelerated rate.

To form a roller door curtain, the individual cut metal hollow profiles with their joint elements must be pushed together. For this purpose, an automated method is provided according to the invention. According to this method, a hollow metal profile is gripped by a lifting pliers at both ends and moved into a position lower by the width of this hollow metal profile. In this lower position, it is then gripped and held in place by holding forceps. After the holding tongs have been accessed, the lifting tongs move back into their upper position so that they are ready for operation again. The next following hollow metal profile is then inserted by means of corresponding drive rollers with its lower joint element into the upper joint element of the previous hollow metal profile. This last arrived hollow metal profile is then gripped by the lifting pliers so that this cycle can be repeated.

According to a further embodiment of the method according to the invention, the nested metal hollow profiles are laterally guided to a milling system by means of a cross conveyor belt. In this milling system, slots are milled into the heat-insulating compound filling the cavity on the end faces of the hollow metal profiles, so that end pieces with their mounting lugs can be attached to these slots. These end pieces are pressed on in a subsequent process step. After the press sen of the end pieces are completed the individual door leaves, which are already pushed together to form a roller door curtain. Then the interlocking door leaves are wound into a bale. At the same time, paper is inserted between the individual layers of the door leaves to protect the door leaves against scratching. This paper is pulled off a roll of paper.

The device used to carry out the manufacturing method according to the invention is provided in connection with the individual exemplary embodiments, insofar as this does not already result from the description of the manufacturing method.

The invention will now be described and explained in more detail with reference to preferred exemplary embodiments and the figures.

• Fig. 1 einen Querschnitt durch ein erfindungsgemäßes Torblatt,
• Fig. 2 die mit den Kerben und Sicken versehene Wandung des Torblatts vor dem Eindrücken der Spalte,
• Fig. 3 die zu einem Gelenk ineinandergeschobenen Ober- bzw. Unterseiten zweier erfindungsgemäßer Torblätter,
• Fig. 4 verschiedene Ausbildungsarten der erfindungsgemäß vorgesehenen Spalte,
• Fig. 5 und 6 Metallbänder, die zwischen den Rollen einer Rollenformmaschine vorprofiliert werden,
• Fig. 7 das Einfüllen einer Kunststoffschaummasse zwischen die vorprofilierten Bänder,
• Fig. 8 das Eindrücken der erfindungsgemäß vorgesehenen Spalte,
• Fig. 9 und 10 das Einlaufgerüst einer für die Durchführung eines Endlos-Verfahrens geeigneten Herstellungsvorrichtung,
• Fig. 11 und 12 eine erste Rollenformmaschine zur Vorprofilierung der Metallbänder,
• Fig. 13 und 14 eine Vorrichtung zum Spreizen der Oberseiten der Metallbänder und zum Einfüllen von Kunststoffschaummasse sowie eine zweite Rollenformmaschine,
• Fig. 15 und 16 eine Längenmeßeinrichtung, eine Vorrichtung zum Eindrücken der Spalte sowie eine Antriebsvorrichtung und einen nachfolgenden Ablängautomaten,
• Fig. 17 und 18 eine Vorrichtung zum automatischen Ineinandersetzen der einzelnen Metallhohlprofile,
• Fig. 19 das Ineinanderschieben der Metallhohlprofile,
• Fig. 20 das Überführen der ineinandergesetzten Metallhohlprofile zu einer Fräsvorrichtung und einer Vorrichtung zum Aufpressen der Endstücke sowie einer Aufwickelvorrichtung und
• Fig. 21 das Aufpressen der Endstücke auf ein Metallhohlprofil.

Show it

• 1 shows a cross section through a door leaf according to the invention,
• 2 shows the wall of the door leaf provided with the notches and beads before the column is pressed in,
• 3 the upper and lower sides of two door leaves according to the invention pushed into one another to form a joint,
• 4 different types of training of the column provided according to the invention,
• 5 and 6 metal strips, which are pre-profiled between the rolls of a roll forming machine,
• 7 the filling of a plastic foam mass between the pre-profiled strips,
• 8 the indentation of the column provided according to the invention,
• 9 and 10, the inlet scaffold one for the through operation of a production device suitable for an endless process,
• 11 and 12 a first roll forming machine for pre-profiling the metal strips,
• 13 and 14 a device for spreading the tops of the metal strips and for filling in plastic foam mass and a second roll molding machine,
• 15 and 16 a length measuring device, a device for pressing in the gaps and a drive device and a subsequent cutting machine,
• 17 and 18 a device for automatically interlocking the individual metal hollow profiles,
• 19 the nesting of the metal hollow profiles,
• 20 shows the transfer of the nested metal hollow profiles to a milling device and a device for pressing on the end pieces as well as a winding device and
• Fig. 21 the pressing of the end pieces on a metal hollow profile.

1 shows a cross section through a door leaf 1 according to the invention. It consists of a hollow metal profile which is formed by two interlocking lamella leaves 20, 21. These lamella blades 20, 21 have different strengths. The lamella leaf 20, which formed the outer shell of the profile body, has the greater wall thickness because it has to have the necessary stability and tensile strength of the door leaf. The thinner lamella leaf 21 forms the cavity wall 7 lying on the inside of the gate. In this cavity wall 7 beads 13 are fitted, within which the gaps 9 run. The gaps 9 are delimited by two legs 12 bent into the cavity 3. The bending edge of the legs 12 runs along the notches 15. The column 9 are in close to the narrow sides of the cavity 10, so that as large a part of the cavity wall as possible. 7 lies isolated. The cavity 3 of the door leaf is filled with a heat insulating mass.

2 shows that two pairs of notches 15 are provided on the surface 17 of the wall 7 facing the cavity 3 to form the gaps 9. On the opposite surface 18 of the cavity wall 7, a further, deeper notch 16 is made centrally between the two notches 15 of each pair. All three notches 15, 16 are located within a bead 13 which protrudes toward the cavity 3. If a tool is pressed into the notch 16, the notch 16 tears open to a gap 9, as shown in FIG. 1.

On their long sides, the lamella blades 20, 21 are bent into one another in the manner of a claw, so that they form joint elements 5, 6. Fig. 3 shows how two articulated elements of two door leaves interlock.

4 shows a perspective view of a door leaf according to the invention. In the upper part, an embodiment is shown in which the column _? 9 are bridged by individual, narrow webs 11. These narrow webs bring about a mechanically firm connection of the cavity wall 7 facing the interior of the gate to the joint elements. It can also be seen that the gaps 9 lie within a bead 13. The gaps 9 are delimited by legs 12 which are bent inwards to the cavity 3. The lower part shows that the gap 9 can also be continuous.

To produce a door leaf according to the invention in an endless process, an inlet scaffold 30, on which there are two metal tape rolls 31, 32, metal tapes 33, 34 removed. This inlet scaffold is shown in FIGS. 10 and 11. The metal strips 33, 34 are drawn off from the infeed stand via rollers 302, 303 of a roller stand 301. The belts are rotated through 90 ° and drive rollers 38, which are arranged at the entrance of a two-tier roll forming machine 35, are driven. The thinner metal strip 33 runs through a beading station, in which it is provided with a continuous beading by appropriately designed rollers 39. The notching station, in which the metal strip 33 is provided with the notches 15, 16 shown in FIG. 2, is located behind the beading station. The notches are pressed there with the aid of rollers 37 which are equipped with cutting edges. The metal strips 33, 34 are then pre-profiled in subsequent rollers 36. This is shown in FIGS. 5 and 6. The metal strips then arrive at a second roll forming machine 40, which is shown in more detail in FIGS. 13 and 14. At the inlet of this second roll forming machine 40 there are pressure rollers 41, in which the undersides of the pre-profiled strips 33 _J 34 are pressed together. This is shown in more detail in FIG. 7. The second roll forming machine 40 also has an expanding roller 42, with which the upper sides of the pre-profiled strips 33, 34 are kept spread. This makes it possible to fill in polyurethane liquid as the heat-insulating material 4 with an outlet nozzle 51 of a polyurethane foam machine projecting between the belts 33, 34. Behind the filling station for the polyurethane liquid there are closing rollers 43, with which the upper sides of the pre-profiled bands 33, 34 are closed and the upper sides and undersides of these bands are bent into one another to form claw-shaped joint elements 5, 6 and thereby fastened to one another. At the end of the second roll forming machine 40 there is a profile straightening device 60 which compensates and corrects distortions of the profile formed from the strips 33 _J 34. From the second roll forming machine, the strips closed to form a hollow profile then reach a curing section 62. This curing section 62 is shown schematically in the left part of FIGS. 15 and 16. From the curing section, the endless hollow profile formed from the metal strips 33, 34 passes into a length measuring device 70. This length measuring device is used to control the cutting machine 80, with which the endless profile is sawn into individual pieces. The length measuring device is equipped with a spring-loaded measuring wheel running on the profile and with length and piece counters. The endless profile then passes from the length measuring device into a splitting station 75, in which the notches 16 to columns 9 are opened with splitting rollers 76. The indentation of the column is clarified in FIG. 8. The profile is held by a counter roller 78 when the split roller 76 presses in the column 9. The split roller 76 can be lifted off the cavity wall 7 of the profile, so that individual gaps with webs 11 lying between them can be produced. Behind the splitting station is a scaffolding 77 which advances the endless profile to a cutting machine 80. This cutting machine 80 is used for the flying cutting of the endless profile. For this purpose, it is equipped with a flying saw 81, which is located on a saw carriage 82. The control of this cut-to-length slide or the flying saw takes place with the length measuring device 70. The arrangement of the length measuring device, splitting station, driving frame and cutting machine is shown in FIGS. 15 and. 16 shown. The individual, cut-off profile bodies are acceleratedly pulled out of the cut-to-length machine by a drive frame 85 and conveyed via guide rollers 86 into a mounting device 91. This assembly device 91 is used to automatically interleave the cut Me tall hollow profiles. The last inserted metal hollow profile 92 is gripped by a lifting pliers 94. This lifting clamp 94 then moves to a lower position, which is exactly the width of the metal hollow profile 92 lower than the entry position. In this lower position, the metal hollow profile 92 is then gripped by holding pliers 92. The next metal hollow profile 93 is now introduced into the assembly device from the driving frame 85. This hollow metal profile 93 is with its lower joint element 6 in the upper. Walking element 5 of the previously inserted metal hollow profile 92 is inserted. The excess kinetic energy of the hollow metal profile 93 is due to the damping. of a hinged stop 99 received and destroyed. After the metal hollow profile 93 has been pushed in, the lifting pliers 94 bring it into the lower position in which the metal hollow profile 92 was previously located. Then the lifting tongs 94 move back into their upper position, while the metal hollow profile 93 is gripped by the holding tongs 95. Another profile can now be inserted. The arrangement of the drive frame 85, guide rollers 86 and the mounting device 91 is shown in more detail in FIGS. 17 and 18. FIG. 19 illustrates the interlocking of the hollow metal profiles 92 and 93. The holding pliers 95 are shown schematically by two rods which are pressed against the profile 92.

If the individual profiles are not to be pushed into one another, but are to be packed individually, the lifting and holding tongs are not operated, the stop 99 is folded away, so that the individual profiles reach the roller table 114 from the drive roller 98.

The further procedure is shown in FIG. 20. In the left part of FIG. 20, the assembly device 91 with the holding pliers 95 and between two positions displaceable lifting clamp 94 recognizable. The nested profiles slide over a fold-down slope 102 onto a cross conveyor belt 100. The slope can be operated with a pneumatic cylinder 103. The cross conveyor belt 100 can be operated in cycles. It guides the nested profiles one after the other into a milling system 104. In this milling system, a slot is milled on both sides of the profile from above and below. The cross conveyor belt 100 then conveys the individual profiles to a preassembly station, in which an end piece 22 is pushed onto a slide rail on both sides from a magazine. In a further device these end pieces 22 are then pressed so that their mounting lugs 23 snap into the slots 19. After this assembly of the end pieces, the individual hollow metal profiles have become finished door leaves. These door leaves are already pushed together to form a roller door curtain, so that no further processing operations are necessary. The adjacent door leaves are wound up into a bale 25 in a winding station 110. A paper web is inserted between the individual layers of the bale 25 and is pulled off a paper roll 112.

When the last profile of a tank is assembled and has left the area of the assembly tongs and the next tank to be manufactured has a different length of the door leaves, the assembly with the holding tongs, lifting tongs and damping stop is used in the assembly device. retracted to the new specified bar length. This rod length is also the length measuring device and and. thus entered the cutting machine. At the same time, the number of cycles of the cross conveyor belt 100 and the number of cycles of the milling system and the press-on system for the end pieces is shortened, so that there is a distance between the outgoing and the newly incoming tank. Once the escaping tank assembles its end pieces., the milling system and the system for pressing the end pieces onto the new length dimension of the tank are also retracted.

Claims (31)

1. Door leaf for a ceiling link or roller door, consisting of a hollow profile formed by two sheet metal shells, the cavity of which is filled with a heat-insulating mass with joint elements provided on the long sides of the hollow profile and with two gaps that extend next to the two joint elements over the length of the door leaf , which are delimited by legs bent towards the cavity side, characterized by the following features. a) the column (9) are on a broad side of the door leaf, b) the gaps (9) are bridged by narrow webs (11) formed by gap interruptions, c) the legs (12) of the column (9) have notches (15) running on the cavity side on the bending root parallel to the gap. 2. A method for producing a door leaf according to claim 1, characterized in that in the sheet metal shell (7) to be provided with the gaps next to the two notches (15) to be made on the cavity side. A further notch (16) is made in the center between the notches (15) on the side facing away from the cavity. 3. The method according to claim 2, characterized in that from two on a runner (30) mounted metal strip rolls (31, 32) metal strips (33, 34) are withdrawn and in a two-tier roll forming machine (35) to form a metal hollow profile '(2 ) are formed and that one of the bands (33) is provided with the three notches (15, 16). 4. The method according to claim 3, characterized in that in a subsequent second roll forming machine (40) the underside of the pre-profiled strips (33, 34) are pressed together by means of pressure rollers (41) and their upper sides are held apart, and that between the metal strips (33, 34) heat insulating material (4) is filled. 5. The method according to claim 4, characterized in that the spreading apart is carried out by means of a spreading roller (42) or a spreading nose. 6. The method according to claim 4 or 5, characterized in that between the bands (33, 34) a curable plastic foam mass (4), in particular polyurethane foam, is filled. 7. The method according to any one of claims 4 to 6, characterized in that in the second roll forming machine (40) after filling the heat-insulating material (4), the metal strips (33, 34) on their upper side by means of closing rollers (43) pressed together and against each other be attached. 8. The method according to any one of claims 3 to 7, characterized in that the metal strips (33, 34) are bent into a claw shape on their top and bottom. 9. The method according to claim 8, characterized in that the metal strips (33, 34) pass through an alignment section (60). 10. The method according to claim 7, characterized in that the joined metal strips (33, 34) pass through a curing section (62). 11. The method according to any one of claims 7 to 10, characterized in that the metal strips (33, 34) joined to form a hollow profile pass through a length measuring device (70). 12. The method according to any one of claims 4 to 11, characterized in that in a splitting device (75), the gap (9) with splitting rollers (76) are pressed. 13. The method according to claim 11, characterized in that from the assembled metal strips (33, 34) existing hollow profile in one of the length measuring device (70) controlled cutting machine (80), which is provided with a flying saw (81), to individual Hollow metal profiles of predetermined length is cut. 14. The method according to claim 13, characterized in that the individual cut metal hollow profiles (2) are pulled out of the cutting machine (80) at an accelerated rate compared to the speed of travel of the metal strips (33, 34). 15. The method according to claim 13 or 14, characterized in that the cut metal hollow profiles (2) in an assembly device (91) with their joint elements (5, 6) are pushed into one another. 16. The method according to claim 15, characterized in that a) the last inserted metal hollow profile (92) is inserted after insertion by lifting pliers (94) at both ends and then moved to a position lower by the width of the metal hollow profile (2), b) that this hollow metal profile (92) is gripped and held in this lower position by holding pliers (95), the lifting pliers being opened, c) that the lifting tongs (94) are moved into their upper position, d) that a further hollow metal profile (93) is inserted with its lower joint element (6) into the upper joint element (5) of the last inserted hollow metal profile (92), e) and that the process steps a) to d) are repeated until a desired number of hollow metal profiles are nested. 17. The method according to any one of claims 14 to 16, characterized in that the nested metal hollow profiles (92, 93) are guided to a milling system (104) -that each of the metal hollow profiles on both sides at its ends with slots (19) which in the protrude heat-insulating mass (4) is provided, and that in a further pressing system (106) end pieces (22) with their mounting lugs (23) are pressed. 18. The method according to claim 16 or 17, characterized in that the nested and with end pieces (22) provided door leaves (1) are wound up by a winding device (110) into a bale (25). 19. Apparatus for carrying out a method according to one of claims 2 to 17, characterized by an inlet stand (30) with two metal strip rollers (31, 32) lying thereon, a roller-forming machine provided with drive rollers (35), which match the shape of the door leaf slats to be formed (21, 22) adapted form rollers (36) and notch rollers (37) to form the notches (15, 16) and rollers (39) to form the beads (13). 20. Device for performing a method according to one of claims 4 to 17, characterized by a second roll forming machine (40) with lower pressure rollers (41) for pressing together the underside of the belts (33, 34), with an expanding nose and / or an expanding roller ( 42), with closing rollers (43) for closing the metal strips (33, 34), these closing rollers (43) being arranged behind the expanding roller or expanding lug (42), and through a straightening section (60) attached to the end of the roller forming machine (40) to align the joined bands (33, 34). 21. The apparatus according to claim 20, characterized by a polyurethane foam machine (50), the outlet nozzle (51) between the lower pressure rollers (41) and the closing rollers (43) of the second roll molding machine (40) is attached. 22. The device according to one of claims 19 to 21, characterized by a hardening section (62) provided with sliding and supporting rollers (63, 64). 23. Device according to one of claims 19 to 22, characterized in that a splitting station (75) equipped with one or more splitting rollers (76) is provided for pressing in the gaps (9). 24. Device according to one of claims 19 to 23, characterized in that a length measuring device (70) for measuring the continuous profile length is provided. 25. The apparatus according to claim 24, characterized in that an automatic cutting machine (80) is provided which has a flying saw (81) provided with a movable saw carriage (82) and with a profile vice, and which can be controlled by the length measuring device (70) . 26. The apparatus according to claim 25, characterized in that a driving device (85) for pulling out the cut metal profiles (2) from the cutting machine is available. 27. The apparatus according to claim 25 and 26, characterized in that an automatic assembly device (91) for interlocking the joint elements (5, 6) of the cut metal hollow profiles (2) is provided, which is provided with lifting pliers (94) which can be moved between two positions and holding pliers (95). 28. The apparatus according to claim 27, characterized in that a foldable run-off slope (96) and a cyclically controllable cross conveyor belt (100) for transporting the nested metal hollow profiles are available. 29. The device according to claim 28, characterized in that a milling device (104) for milling slots in the lateral end faces of the hollow metal profiles and an arrangement (1O6) for pressing end pieces (23) is present. 30. The device according to claim 28 or 29, characterized in that a winding device (110) for winding the nested door leaves is present. 31. The device according to claim 30, characterized in that a paper roll (112) is present, the paper web is gripped by the winding device (110) and placed between the layers of door leaves.

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