DE7208019U - DEVICE FOR CONNECTING TWO EDGES AT LEAST ONE PLASTICALLY DEFORMABLE PLATE, IN PARTICULAR METAL SHEET - Google Patents

Description

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DIPL-ING. H. FINK PATENTANWALT · 7300 ESSLINGEN (NECKAR) · HIN THE BU RGSTR ASSE

Polentonwall flNK D 7300 Ettlingen (Neckar). Hindanburgslroße 44

March 1, 1972 Br P 5975

Xaver L i ρ ρ ', 7091 Tannhausen, Aalen district

"Device for connecting two edges of at least one plastically deformable plate, in particular sheet metal"

'The invention relates to a device for connecting two abutting edges at least one plastically deformable Plate, in particular sheet metal, in which one of the edges has two spaced apart and each in bevels of about 90 ° each bent in the same direction and the other edge additionally bent in the opposite direction and has a bevel at about 90 ° further away from the end of the plate, with different pairs of deformation members, one of which is a pair of deformation members for bending of the free end of the triple beveled edge is used and one of the deformation organs of this pair has a groove for this purpose having sloping wall. The invention also relates to a method for connecting two abutting edges of the plate.

When connecting two abutting edges by folding, the previously bent free end has to be applied

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the end of the other edge show that the bent free end is compressed after the bending process, during which the fold is to be, springs back and at least hampers the compression of the fold. It was therefore necessary to have one switch on additional operation that brings the bent free end into a position in which it springs back can no longer hinder the next work step.

The present invention aims to eliminate the operation which is necessary to avoid the spring back of the free end saves the necessary action on it. This object is achieved in that a another pair of deformation members for angling between two folds closest to the center of the plate Located area for applying the previously bent free end to the end of the other end is used, including one of the Deformation members a groove with an inclined wall and the other deformation member a wedge-like, cooperating with the groove Has bead, and that again another pair of deformation members is used to compress the fold, including one of the deformation members a groove with an inclined wall and the other deformation member a wedge-like, with the groove has cooperating bead. By bending the one closest to the center of the plate between two Folded area, the previously bent free end is brought into a position in which it springs back is prevented, so that the next operation, which serves to compress the fold, from the previously bent free End can go on unhindered.

A method for connecting two abutting edges of at least one plastically deformable plate, in particular Sheet metal, wherein the free end of the triple beveled edge is bent, is characterized in that at Bending in the end of one edge opposite the end of the

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March 1972 Br ti 1. 5975 f P.

the other edge in its end position at the same time of the "two edges "adjacent area lying between two folds is bent away from the free end to be bent into its end position and that the bent end together with parts of the two edges running parallel to it at the in the preceding Work step bent, at both edges between two folds lying area is created.

Further advantageous features emerge from the description and the drawing. In this is a device for Connecting two abutting edges of two flat metal sheets as an embodiment of the subject matter of Invention shown schematically. Show it

Fig. 1 is a side view,

Fig. 2 the edges of two sheets in the initial state,

Fig. 3 is a section along line III-III in Fig. 1 with inserted, sheets prepared according to Fig. 2,

Fig. 4 to 6 sections according to the lines IV-IV, V-V and VI-VI in Fig. 1 with correspondingly deformed sheets.

On a frame 1 there are four pairs of rollers 2 to 9 in terms of height adjustable and rotatable. The rollers of a roller pair are positively connected to one another by means of gear wheels. In each case one of the rollers of a roller pair can be driven by means of a chain from the adjacent roller pair, with each a chain only connects two adjacent pairs of rollers. One of the rotatable with the rollers 2 to 9 connected gears is rotatably connected to a drive motor. The rollers 2 to 9 are therefore each with can be driven at the same speeds.

2 shows, in cross section, two metal sheets 11 and 12 to be connected to one another. The sheet metal 11 has three bevels 13 to 15 by an angle of 90 ° in each case, with the bevels 14

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and 15 in the same direction and the fold 13 in the opposite direction has turned. The sheet metal 12 has two bevels 16 and 17, each bent in the same direction. Foldings 13, 14 and 16, 17, and preferably also 14, are equidistant from one another. The free ends of the Sheets 11 and 12 are denoted by 18 and 19 and between Areas with 21, 22 and 23 respectively, lying on the folds. The lengths of the free ends are slightly shorter than the distances of the folds 13, 14; 16, 17 and 14, 15. The sheets 11 and 12, with the exception of the folds, can be flat or around a be bent parallel to the folds axis. It is also possible for those provided with bevels 13 to 17 Sheets 11, 12 during the folding of their edges 19, 21, 22 and 18, 23 to bend about an axis which is perpendicular to the areas 21 and 23 in FIG. The finished fold can therefore be a finished tube parallel to its longitudinal axis, ring-shaped run around its circumference or helically on its circumference.

With the help of the rollers 2, 3, the free end 19 is one Angled between 15 and 80 °, in particular 30 and 60 °. For this purpose, the roller 3 has an annular groove 27 arranged between two flanges, an inclined wall 28 and a Wall 29 running perpendicular to the axis of rotation. The roller is cylindrical.

At the next step, the free end 19 is shown in FIG. 4 applied to the free end 18 and the portions 21 are, ° ·> in particular 30 and 60 ° bent at an angle between 15 and 75 toward the plate 11. For this purpose, the roller 4 has an annular groove 30 with an inclined wall and with a wall 32 extending perpendicular to the axis of rotation, the wall 31 resting against the area 21 and the wall 32 resting against the area 22.

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The roller 5 had an annular bead 33, its inclined surface on the area 23 and its wall 35 running perpendicular to the axis rests against the free end 19. The reels 4 and 5 have also Plansche 3 & and 37, of which the flange 36 the wall 32 resting on the region 22 and delimiting the annular groove 30.

Because of the bending of the area 23, the free end 19 engages at an acute angle and is therefore springing back prevented. In addition, the wall 32 ensures that when the free end 19 is bent in by the roller 5, the area 22 is not printing in the direction of platen 4.

The pair of rollers 6, 7 is used to lay the free ends 18, 19 and the area 22 parallel to the areas 21 and 23 and for placing the free end 19 on the area 23. For this purpose, the roller 6 has an annular groove 41 with an inclined one Wall 42 and the roller 7 a cooperating with the annular groove 41 Annular bead 43 with a corresponding sloping wall. The rollers 6 and 7 also have ring flanges 45 and 46.

In the next step, the cylindrical Rollers 8 and 9 of the pallet perpendicular to the metal sheets 11 and 12 posed.

While the annular groove 27 of the roller 3 on one side of the to machining parts 18, 19, 21, 22, .23, the annular grooves 30 and 41 of the rollers 4 and 6 are on the other Page.

Instead of using rollers, the sheet metal edges can also be deformed in the manner described above with the aid of embossing tools or the like will. Only embossing tools are used to deform the sheet metal edges used, additional conveyor rollers are required.

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Claims (1)

August 19, 1975 Z P 5975 Protection claims 1. Device for connecting adjacent edges at least a plastically deformable plate, in particular sheet metal, the edges essentially opposite the other sheet metal parts are raised vertically and with the first edge two additional arranged in the same direction and at a distance Has bevels of about 90 ° and the second edge with an additional 90 ° bevel the first edge up to last fold is applied, with different pairs of deformation bodies, of which a first, for bending the edge end of the first edge serving pair of deformation bodies a region lying closest to the rest of the sheet metal part the beveled edges adapted first deformation body and one on the side of the rest of the sheet metal part having a pressing part has a second deformation body, one of the deformation bodies being parallel to the rest of the sheet metal part Having wall, characterized in that one for the remaining bending of the edge end of the first edge and a second pair of deformation bodies (4, 5) serving to bend the two raised edge sections at an angle is provided, of which a first deformation body (4) has a wedge-like ■ bead (34, 35) on the working surface and of which one second deformation body (5) with a cooperating with the wedge Inclined (31) is provided, wherein one of the two deformation bodies has a wall (32) perpendicular to the axis at a distance from the wall of the bead that is parallel to it. 2, device according to claim 1, characterized in that that a third pair of deformation bodies (6, 7) serving to compress the fold is provided, of which the first deformation body (6) on its from the rest -2- 7? 08019 1/15/76 - 2 - 19, August 1975 Z P 5975 Sheet metal part facing away from an inclined wall (42) and of which the second deformation body (7) one has an inclined surface parallel to the inclined wall of the first deformation body (6). 3. Apparatus according to claim 1 or 2, characterized in that the deformation body (2 to 9) as Rollers are formed. 9 1/15/76