EP2487315A1 - Method for manufacturing a door leaf from metal sheets and door leaf - Google Patents

Abstract

The method involves providing a sheet metal box and a cover plate for forming a box and a cover. A retainer is provided in edge portion of the box or cover plate. The tongue receptacles arranged in edge portion of the box or cover plate for receiving the retainer. The box and cover plate are assembled by bending the retainer in the tongue receptacles to form connecting regions (78). An independent claim is included for door leaf.

Description

The invention relates to a method for producing a door leaf made of metal sheets in box and lid construction and such a door leaf.

The previously available in the market door leaves, in which metal panels are joined together in box and lid design, are usually prepared such that first the box plate and the cover sheet are brought into the desired shape, assembled and fixed together by welding. This is particularly important in fire doors, where a passage of fire and smoke over a certain period of time should be prevented. A firm connection of box and cover plate is therefore very important.

In order to save the welding step, a manufacturing method has been developed in which arranged on box and cover plate rear hooks are moved against each other, so as to fix the sheets together. This procedure is in the unpublished DE 10 2010 044 195.3 described.

The object of the invention is to propose a method for producing a door leaf from metal sheets, which is simple and at the same time compensates for design errors.

This object is achieved by a manufacturing method having the features of claim 1. A corresponding door leaf is the subject of the independent claim.

Advantageous embodiments of the invention are the subject of the dependent claims.

1. a) Bereitstellen eines Kastenbleches und eines Deckelbleches zum Bilden von Kasten und Deckel;
2. b) Vorsehen von Umbiegezungen in wenigstens einem ersten Randbereich von Kasten- oder Deckelblech;
3. c) Vorsehen von Zungenaufnahmen zur Aufnahme der Umbiegezungen in wenigstens einem dem ersten Randbereich zuzuordnenden ersten Randbereich des anderen Blechs;
4. d) Zusammenfügen des Kasten- und Deckelblechs durch Umbiegen der Umbiegezungen in die Zungenaufnahmen unter Bildung von Verbindungsbereichen.

A method of manufacturing a door panel of box and lid metal sheets comprises the following steps:

1. a) providing a box plate and a cover plate for forming box and lid;
2. b) providing Umbiegezungen in at least a first edge region of box or cover plate;
3. c) provision of tongue receptacles for receiving the Umbiegezungen in at least one of the first edge region attributable to the first edge region of the other sheet;
4. d) joining the box and cover sheet by bending the Umbiegezungen in the tongue receivers to form connecting areas.

The outline with letters a), b), c) and d) is chosen purely for the sake of simplicity and does not contain any statement about a particular order. In particular, the order of steps a), b) and c) is arbitrary.

With such a method, the box and cover plate can be easily joined together by after folding the box and cover plate only the Umbiegezungen must be inflected into the tongue recordings. This results in a firm connection between the box sheet and cover sheet and a subsequent fixing step such as welding can be omitted. In order to bend the Umbiegezungen in the tongue recordings, exactly worked Umbiegezungen / tongue recordings are not necessarily required. The Umbiegezungen need only fit somehow in the tongue recordings. The strength and density of the connection of box and cover plate is determined only by the arbitrary number of connection areas. Thus, a suitable as a fire door leaf door leaf can be produced. In this case, prior to step d), for example, gluing of fire protection materials into the box panel may be provided.

Preferably, step b) comprises the step of forming a plurality of substantially parallel to the first edge region extending, parallel punched out. Between the punched out then advantageously creates a projection that is suitable as Umbiegezunge. The more Umbiegezungen be formed, the narrower and stronger the connection between the box and sheet metal cover. The cut-outs may extend both from the edge of the first edge region, as well as spaced from the edge lie in the center of the first edge region. The term "edge region" is therefore to be understood as meaning a region of the metal sheet which extends inwards from the edge of the metal sheet and in which the parallel punched-out portions can be arranged at any distance from the edge.

Advantageously, step c) comprises the step of forming a plurality of recesses having a substantially greater width than the Umbiegezungen. Thus, advantageously also inaccurately formed Umbiegezungen can be inflected into the tongue receivers and it can still be achieved a tight fit between the box plate and cover plate.

In a preferred embodiment, the step of folding at least one corner of the box and cover plate in the form of a curly bracket is performed before step d). By folding the corner of the edge region can be folded over to a lid or a box, advantageously without overlaps in the corner arise, which prevent tight assembly of the box and lid. If the shape of the bend of a curly brace is modeled, created when bending adjacent edge regions, a distance between the edge regions, so that additional elements can be attached to the edge areas, without causing the edges of the edges a disturbing overlap of the elements.

Advantageously, for example, prior to step d), the step of providing a reinforcement device is provided on the first edge region. The reinforcing device is preferably used to stably the folded edge area with the introduced Umbiegezungen or tongue recordings shape. However, the reinforcing device takes in the thickness direction of the metal sheet a certain amount of space, which must be considered when bending the edge region. The formation of the fold is therefore preferably adapted to the thickness of the reinforcing device.

Advantageously, in step d), the Umbiegezungen be bent over more than 130 °. Thus, the Umbiegezungen preferably embrace the inner edges of the tongue receivers and make a close connection between the box plate and cover sheet ago.

After step d), it is advantageous to provide a step of blending the connection regions by means of veneering devices. The veneering devices close the remaining after bending the Umbiegezungen holes in the side region of the door leaf and thus form a visually appealing image and a fully closed door leaf, which can also be used as a fire door panel.

A door leaf has a box and a cover plate, wherein on at least one edge region of box or cover sheet Umbiegezungen and at one of the first edge region to be assigned first edge portion of the other sheet tongue receptacles are formed for receiving the Umbiegezungen, wherein the Umbiegezungen for forming connecting portions in the tongue recesses are inflected.

The tongue receptacles may preferably be formed with play, so that after putting together the box and cover plate, a tool can simply bend the Umbiegezungen in the tongue recordings. A solid mesh of box and cover plate is also given when the tongue receptacles are formed with great play, since the Umbiegezungen embrace the edge portion of the tongue recordings firmly. Thus, a simpler manufacture of the door leaf is possible, in which design errors can be compensated.

Preferably, the Umbiegezungen are inflected at an acute angle of ≤50 ° in the tongue receptacles and thus embrace the edge portion of the tongue recordings closely, so as to create a close connection between the box and cover plate.

Advantageously, the Umbiegezungen are formed on the first edge region by forming each two substantially perpendicular to an edge of the first edge region aligned, parallel punch outs.

Advantageously, the tongue receptacles substantially have a greater width than the Umbiegezungen, so as to create a game when bending the Umbiegezungen.

Preferably, reinforcement means for reinforcing and stabilizing the connection areas are provided in the interior of the door leaf at the first edge area with the tongue receptacles, and / or veneering devices are advantageously provided for blending the connection areas.

In a particularly preferred embodiment, the fold-over tongues and the tongue receivers are formed on a second edge region extending parallel to the first edge region and / or on a third edge region extending perpendicular to the first and second edge regions. Thus, not only at an edge region, there are advantageous close joints between the box and cover sheets but at several edge regions, so that preferably an even stronger connection between the box and cover sheets can be achieved.

Advantageously, a recess is formed on the box and cover plate on a corner formed by the first and third edge region and / or by the second and third edge region. The return allows an overlapping-free bending of the first and third and / or second and third edge region.

Preferably, the recess is formed by a substantially perpendicular to the first and third and / or the second and third edge region Formed bent and / or has substantially the shape of a curly bracket.

Fig. 1

ein erstes Metallblech zum Bilden eines Kastenbleches;

Fig. 2

eine vergrößerte Darstellung eines Teilbereiches des ersten Metallbleches aus Fig. 1 mit Ausnehmungen für eine Schlossvorrichtung;

Fig. 3

eine vergrößerte Darstellung einer Ecke des ersten Metallbleches aus Fig. 1;

Fig. 4

eine erste Ausführungsform einer Umbiegezunge;

Fig. 5

eine zweite Ausführungsform einer Umbiegezunge;

Fig. 6

ein zweites Metallblech zum Bilden eines Deckelbleches;

Fig. 7

eine vergrößerte Darstellung eines Teilbereiches des zweiten Metallbleches mit Ausnehmungen für eine Schlossvorrichtung;

Fig. 8

eine Zungenaufnahme;

Fig. 9

eine vergrößerte Darstellung eines Teilbereiches des zweiten Metallbleches aus Fig. 6 um ein mittleres Türband;

Fig. 10

eine vergrößerte Darstellung eines Teilbereiches des zweiten Metallbleches aus Fig. 6 um ein oberes Türband;

Fig. 11

eine vergrößerte Darstellung eines Teilbereiches des zweiten Metallbleches aus Fig. 6 um ein unteres Türband;

Fig. 12

eine vergrößerte Darstellung eines zweiten Randbereiches des zweiten Metallbleches aus Fig. 6;

Fig. 13

ein aus Kastenblech und Deckelblech zusammengefügtes Türblatt;

Fig. 14

eine Ansicht von der Seite auf einen Türbandbereich des Türblattes aus Fig. 13; und

Fig. 15

eine Schnittansicht durch die Linie A-A im Türbandbereich in Fig. 13.

An embodiment of the invention will be explained in more detail with reference to the accompanying drawings. It shows:

Fig. 1

a first metal sheet for forming a box panel;

Fig. 2

an enlarged view of a portion of the first metal sheet Fig. 1 with recesses for a lock device;

Fig. 3

an enlarged view of a corner of the first metal sheet Fig. 1 ;

Fig. 4

a first embodiment of a Umbiegezunge;

Fig. 5

a second embodiment of a Umbiegezunge;

Fig. 6

a second metal sheet for forming a lid sheet;

Fig. 7

an enlarged view of a portion of the second metal sheet with recesses for a lock device;

Fig. 8

a tongue recording;

Fig. 9

an enlarged view of a portion of the second metal sheet Fig. 6 around a middle door hinge;

Fig. 10

an enlarged view of a portion of the second metal sheet Fig. 6 around an upper door hinge;

Fig. 11

an enlarged view of a portion of the second metal sheet Fig. 6 around a lower door hinge;

Fig. 12

an enlarged view of a second edge region of the second metal sheet Fig. 6 ;

Fig. 13

a door panel assembled from sheet metal and cover sheet;

Fig. 14

a view from the side of a door hinge area of the door leaf Fig. 13 ; and

Fig. 15

a sectional view through the line AA in the door hinge area in Fig. 13 ,

Fig. 1 shows a view of a first metal sheet 10, which is to be bent as a box plate 11 to form a box 12. The first metal sheet 10 has a first edge region 14, a second edge region 16 and a third edge region 18, the first edge region 14 and the second edge region 16 extending parallel to one another and the third edge region 18 perpendicular to the first edge region 14 and the second edge region 16 is arranged.

In the first edge region 14, the first metal sheet 10 has first recesses 20 for inserting a lock device (not shown). In the second edge region 16, the first metal sheet 10 has an upper recess 22a, a middle recess 22b and a lower recess 22c for attaching an upper, a middle and a lower door hinge.

Corners 24, at which the first edge region 14 collides with the third edge region 18 or the second edge region 16 with the third edge region 18, each have a recess 26, which is formed by a fold 28 in the form of a curly bracket.

Along the first, second and third edge region 14, 16, 18 Umbiegezungen 30 are formed. Further, 16 holes 32 are formed for passing bolts in the second edge region.

The Fig. 2 to Fig. 5 show enlarged portions of the first metal sheet 10 from Fig. 1 ,

Fig. 2 shows an enlarged view in the region of the first recesses 20 for introducing a lock device. At an edge 34 of the first metal sheet 10, a lock pocket recess 36 is formed to later accommodate therein, for example, a catch or a bolt. Above and below the lock pocket recess 36, bores 38 are provided to secure therein said members. Spaced to the edge 34, a slot 40 and a receiving hole 42 are provided at the level of the lock pocket recess 36, in the later with the help of further holes 38, a cylinder lock or a handle (not shown) can be screwed.

Fig. 3 shows an enlarged view of the corner 24, where the second edge portion 16 and the third edge portion 18 collide. The fold 28 has essentially the shape of a curly bracket. In this case, the edges 44 of the fold 28 initially run perpendicular to the edge regions 16, 18, then form an outwardly directed bend 46 and meet with a turn perpendicular to the edge regions 16, 18 formed end portion 48 to each other. By dashed lines 50, the line along which the edge portions 16, 18 are folded later, indicated. Due to the shape of the fold 28, the then folded over edge portions 16, 18 do not touch, it creates a space in which additional elements can be introduced.

Fig. 4 shows an enlargement of the arranged at the edge regions 14, 16 and 18 Umbiegezungen 30 in a first embodiment. In this first embodiment are directly on the edge 34 of the edge regions 14, 16, 18 punched-out 52 mounted substantially parallel to each other and run perpendicular to the edge 34. Between these cutouts 52 a Umbiegezunge 30 is then formed by the remaining piece.

Fig. 5 shows a second embodiment of a Umbiegezunge 30. In this case, the punch-outs 52 are not formed by an edge 34 of the edge portion 14, 16, 18, but are within the edge region 14, 16, 18. To form the Umbiegezunge 30 is additionally a connecting web 54 punched out, which connects the two punched 52 with each other. In this embodiment as well, the cutouts 52 extend parallel to one another and perpendicular to the edge 34 of the edge regions 14, 16, 18.

Fig. 6 shows a second metal sheet 56, which is formed here as a cover plate 58 for forming a lid 60. Like the first metal sheet 10, the second metal sheet 56 also has a lock pocket recess 36, a slot 40 and a receiving hole 42 with the corresponding holes 38 for receiving a lock device. Furthermore, the upper, middle and lower recess 22a, 22b, 22c are provided for receiving door hinges with corresponding holes 38 and with bolts 61. At the edge regions 14, 16, 18 square recesses 62 are provided as tongue receptacles 64 for receiving the Umbiegezungen 30.

The FIGS. 7 to 9 show enlarged portions of the second metal sheet 56 from Fig. 6 ,

In Fig. 7 a portion around the first recesses 20 for receiving a lock device is shown. As well as in the first metal sheet 10, a lock pocket recess 36 is provided on the edge 34, at the upper and lower edge bores 38 are introduced for attaching, for example, latch and / or latch. Furthermore, the area has a receiving hole 42 and a slot 40 with associated boreholes 38 into which a handle or a cylinder lock can be introduced.

Equally spaced from the boreholes 38 adjacent the lock pocket recess 36 are square recesses 62 formed in Fig. 8 are shown enlarged. These square recesses 62 are arranged uniformly in the edge regions 14, 16, 18. They are spaced apart from the edge 34 and arranged substantially with a recess edge 66 parallel to the edge 34.

The FIGS. 9, 10 and 11 show enlarged partial views of the central, upper and lower recesses 22a, 22b, 22c with associated bores 38, in which a door hinge can be attached.

Fig. 12 shows an enlarged view of the second edge region 16 between the central recess 22b and the lower recess 22c. In addition to a further borehole 38, the bolt 61 is provided, which engages through one of the holes 32 after joining the first and second metal sheets 10, 56 and stabilizes the resulting door leaf in a frame (not shown).

Fig. 13 shows a formed of the metal sheets 10, 56 door leaf 70. In the recesses 22a, 22b, 22c of the door leaf 70 door hinges 72 are introduced. Via a side region 74 of the door leaf 70, which is formed by the bent-over second edge regions 16, the bolts 61 project to engage in a frame (not shown). By formed perpendicular to the edges of the door panel 70 lines 76 connecting portions 78 are indicated, where the first metal sheet 10 and the second metal sheet 56 are connected to each other by means of the Umbiegezungen 30 and tongue receivers 64.

Fig. 14 shows a view of the side portion 74 of the door leaf 70. Here, within a dashed rectangle, which is to indicate a veneering device 79, a Umbiegezunge 30 is shown, which is bent into a tongue receptacle 64. The Umbiegezunge 30 has a significantly smaller width than the tongue receptacle 64, so that the connection allows a certain play, whereby inaccuracies in the punching of the tongue receivers 64 and the Umbiegezungen 30 can be compensated.

Fig. 15 shows a sectional view through the line AA in Fig. 13 through a connection region 78 on the door leaf 70. In the connection region 78, a reinforcement device 80 is introduced, which statically supports the connection region 78. The Umbiegezunge 30 is bent at an acute angle ≤ 50 ° in the tongue holder 64. The reinforcing device 80 also has a passage 82 in the region in which the folding tongue 30 is bent so that the folding tongue 30 can be bent in behind the reinforcing device 80. Thus, the connection between the first and second metal sheets 10, 56 becomes particularly strong and stable.

By providing a plurality of Umbiegezungen 30 and a plurality of tongue receptacles 64 in the metal sheets 10, 56, the metal sheets 10, 56 can be easily connected to each other by first placed on each other and then the Umbiegezungen 30 are bent into the tongue receivers 64. The connection is tight and firm, so that can be dispensed with a further fixing step, such as welding. Due to the different widths of Umbiegezunge 30 and tongue holder 64 a game is created that compensates errors, for example, during punching. The resulting openings in the side region 74 are covered or sealed by facing devices 79. If 10 fire protection devices inserted inside the door panel, the door panel 10 is also suitable as a fire door panel. The bolts 68 serve for firmly anchoring the door leaf 70 in a frame, not shown.

LIST OF REFERENCE NUMBERS

10

first sheet metal

11

box sheet

12

box

14

first edge area

16

second border area

18

third edge area

20

first recesses

22a

upper recess

22b

middle recess

22c

lower recess

24

corner

26

return

28

fold

30

Umbiegezunge

32

hole

34

edge

36

Mortice recess

38

well

40

Long hole

42

receiving hole

44

edge

46

kink

48

end

50

dashed line

52

punching

54

web

56

second sheet metal

58

cover sheet

60

cover

61

bolt

62

square recesses

64

tongue receiving

66

recess edge

70

door leaf

72

hinge

74

page range

76

line

78

connecting area

79

veneer facility

80

reinforcing device

82

passage

Claims (15)

Method for producing a door leaf (70) of metal sheets (10, 56) in a box and lid construction, comprising the steps: a) providing a box plate (11) and a cover plate (58) for forming the box (12) and lid (60); b) providing Umbiegezungen (30) in at least a first edge region (14) of box or cover plate (11,58); c) providing tongue receivers (64) for receiving the fold-over tongues (30) in at least one first edge region (14) of the other metal sheet to be assigned to the first edge region (14); d) joining the box and cover plate (11, 58) by bending the Umbiegezungen (30) in the tongue receivers (64) to form connecting portions (78). Method according to claim 1,
characterized in that step b) comprises the step of forming a plurality of substantially parallel to a rim (34) of the first edge region (14) extending, parallel punched-out (52). Method according to one of the preceding claims,
characterized in that step c) comprises the step of forming a plurality of recesses (62) having a substantially greater width than the Umbiegezungen (30). Method according to one of the preceding claims,
characterized in that prior to step d) the step of folding at least one corner (24) of the box and cover plate (11, 58) is provided in the form of a curly bracket. Method according to one of the preceding claims,
characterized in that before step d) the step of providing an amplifying means (80) on the first edge region (14) is provided. Method according to one of the preceding claims,
characterized in that step d) comprises the step of bending over the Umbiegezungen (30) by more than 130 °. Method according to one of the preceding claims,
characterized in that, after step d), a step of blending the connecting regions (78) by means of veneering devices (79) is provided. Door leaf (70) with a box and a cover plate (11, 58), wherein at least one edge region (14, 16, 18) of box or cover plate (11, 58) Umbiegezungen (30) and at a first edge region ( 14) of the other sheet tongue receivers (64) are formed for receiving the Umbiegezungen (30) and wherein the Umbiegezungen (30) for forming connecting portions (78) in the tongue receivers (64) are inflected. Door leaf (70) according to claim 8,
characterized in that the Umbiegezungen (30) are bent at an acute angle of ≤ 50 ° in the tongue receivers (64). Door leaf (70) according to one of claims 8 or 9,
characterized in that the Umbiegezungen (30) at the first edge region (14) by forming two substantially perpendicular to an edge (34) of the first edge region (14) aligned, parallel punched out (52) are formed. Door leaf (70) according to one of claims 8 to 9,
characterized in that the tongue receivers (64) substantially have a greater width than the Umbiegezungen (30). Door leaf (70) according to one of claims 8 to 11,
characterized in that in the interior of the door leaf (70) on the first edge region (14) with the tongue receivers (64) an amplifying means (80) for reinforcing the connecting portions (78) is provided and / or that veneering means (79) for blending the connecting portions (78) are provided. Door leaf (70) according to one of claims 8 to 12,
characterized in that Umbiegezungen (30) and the tongue receivers (64) on a parallel to the first edge region (14) extending second edge region (16) and / or on a perpendicular to the first and second edge region (14, 16) extending third edge region (18) are formed. Door leaf (70) according to claim 13,
characterized in that on box and cover plate (11, 58) on a by the first and third edge region (14, 18) and / or by the second and third edge region (16, 18) formed corner (24) has a recess (26 ) is formed. Door leaf (70) according to claim 14,
characterized in that the recess (26) is formed by a substantially perpendicular to the first and third and / or the second and third edge region (14, 16, 18) formed fold (28) and / or substantially the shape of a curly Clamp has.

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