ES2278957T3 - METHOD OF CRIMPING FOR THE OPENING OF AN EDGE TO SPRAY OF A PIECE BY FOLDING BY ROLLERS WITH AT LEAST TWO STAGES OF FOLDING. - Google Patents

Abstract

Procedure for the folding of an edge to be crimped of a piece to be machined by folding by rollers with at least two stages of folding, in which an edge to be crimped (2) of a first piece of sheet metal construction (3) of the piece to be machined is crimped with the aid of a crimping device (1) around an edge (59) of a second sheet metal construction part (4) of the piece to be It is going to be machined, because a folding roller (10), mounted rotatably on a mobile driven useful unit of an arm of an articulated arm robot, depending on the pressure roller, is rolled by the pressure supply and with a determined angular position along and in support on the edge to be set for its folding, and because a support roller (11) associated with the folding roller (10) and arranged facing in relation to the edge that it will be set, as well as mounted on the rotating unit and useful (9) in the sector of the folding roller (10), which has a rotating bearing tread edge (16) on the periphery, it is rolled with this rotating rolling edge (16) in the course of a stage folding along a folding line (22) of the edge to be crimped (2), characterized in that the two sheet metal construction pieces (3, 4) are introduced before the folding stages at least in the sector of the edge to be crimped (2) in a folding bed (8) of the crimping device and held together, and because then the support roller (11), before a folding of the edge to be crimping (2) of the first sheet metal construction part (3), it is supported with its supporting rolling edge (16) on the edge to be crimped (2), so that, in the course of the first folding stage, the folding line (22) is carried out by the bearing tread (16) moving with the folding roller (10), in the form of a n folding edge with precise positioning.

Description

Crimping method for the dejection of a edge to be crimped of a piece by folding by rollers with at minus two stages of folding.

The invention relates to a method for the dejection of an edge to be set in one piece, by folding by rollers with at least two stages of folding according to the introductory part of claim 1. Such method can be consulted in the document JP-A-01249222.

A crimping device known for the abatement of an edge to be crimped by Rollers (EP 0525 759 B1) comprises a useful unit, which is scrollable in a controlled way with the help of an arm robot articulate. A folding roller is located rotatably in the unit of tools and can be rolled in case of pressure input and with a certain angular position along, and leaning on, the edge to be set for dejection.

The piece to be machined with the edge that it will be set and folded approximately 90º before the process folding is introduced into a folding plate for fixing the piece to be machined and for the support of all the edge length to be set. In addition, it has been represented here the manufacture of a union coupling between two pieces of sheet metal construction, with the reason that, with the process of folded, the edge to be set of a construction piece sheet metal is folded around an edge of the second sheet metal construction piece.

The folding process is done in this case in two stages, due to the fact that the folding roller cylindrical is guided under pressure with an angle of attack on the edge to be set, so that it is still down 45º in the course of a first stage of folding starting from the edge that It will be crimped and folded 90º. Finally, the folding roller cylindrical is swung with its axis of rotation for a second folding stage, so that the edge to be set is completely folded 180º for a final folding.

During this folding process, it starts, by consequently, of a piece to be machined, for which the edge to be set made available has already been folded previously 90º and regardless of the folding process by rollers Thanks to this pre-folding, the line of folding and the bending edge of the edge to be crimped are already formed before the folding process using rollers and their position is determined. Therefore, for the process of folded by two-stage consecutive roller, the edge that going to be crimped is folded back around the folding line already predefined. However, with this device, it is not possible, starting from a piece edge that will be machined not folded previously, in a first folding stage, form a line of clean folding, with a precise and predefined position, since in this case, a line of folding not held against the pressure of the folding roller at principle of the folding process.

It is also known a device manufacture of a coupling coupling (EP 0 904 167 B1), with relation to which an edge to be set is folded 180º by treatment, because a reinforcement piece is joined during the joining a roof of a motor vehicle in the sector of a cut of practicable roof. At the same time, folding the sheet metal flange or, as the case may be, of the edge to be set, it must be made on a predefined folding line of dimensions precise. The coupling is made in this case by folding processes with the help of filling slides and of folding jaws faces.

In addition, a crimping device is known for the dejection of an edge to be set by folding by rollers, for which a series of folding rollers are arranged with different angular positions one behind others in a useful unit. This crimping device serves for the dejection of an edge to be set in one piece of sheet for a stable edge of the edge of a piece that is going to 180º machining. Edge edge of stable edge flange it serves here as support for the formation of a folding line corresponding determined. This device is not suitable for the joining couplings of the sheet metal parts with approximately the same sheet thicknesses and approximately the same folding behavior, since, during folding by rollers, both the edges that will be crimped sheet metal part as the edge of the other sheet metal edge They would be twisted indefinitely.

The task of the invention is to perfect a crimping device of the type mentioned in introduction, of so that for a folding process of various stages, starting of a flat marginal area of a piece to be machined, in In the course of a first stage of folding, a line of precise folding and predefined dimensions with a position to the corresponding dimensions of the edge that is going to set.

The task is solved by the characteristics of claim 1

The procedure allows to obtain that the line of folded during training lean in precise position while opposing the folding roller by support roller edges associated, in order to obtain a folding edge Correct and clean corresponding. Therefore, a line of linear straight folding can be formed mainly with precision. The fold lines curved from the predefined curves They are equally advantageous.

The folding process is easily achievable, quickly and with little expense with the help of an arm robot articulate.

Advantageously, the axes of rotation of the folding rollers and rotation axes of the support rollers they are located at a transversal level in relation to the edges that are they will be set, so that the support points of the roller folding and supporting roller on the edges to be crimping are directly opposite.

To allow an insertion of the edge that goes to be set between the folding roller and the support roller, preferably, it has been proposed to rotate the support roller rotating and the folding roller with controlled displacement on the tool unit. For this purpose, the folding roller is mounted rotating on a carrier part of folding rollers, with the so that the folding roller carrier piece is movable  by control, with the help of a control mechanism, from a base position with a reciprocal separation between a roller folding and a support roller in an operating position in which the folding roller and the edge of the support roller are located on the edge to be set.

In an appropriate manner, the folding roller is approximated with a linear offset movement of the roller support, with a guide carriage structure, which is movable by means of an electronic and / or hydraulic and / or pneumatic drive. The support roller can be developed in the form of a disk, preferably flat and in the form of a double cone, in order to that the rotating edge then directly forms the edge of the support rollers Preferably, the folding roller is made cylindrically in the area of its surface of rolling, with a corresponding rolling surface width to the width of the edge to be set, which allows to obtain A good folding result. Mainly for training in shape of double cones of the support roller, it is possible to use a cone surface opposite the rolling surface of the roller also folded as a support surface for the edge that It will be set during the folding process. A flat support on the support roller in addition to the support on the edge of the roller Support is not, however, necessary for each use.

The folding process is carried out below to any test according to claim 2, so that in the course of a first stage of folding, the rolling surface adjacent to the folding roller with an angular position of approximately 30º for the corresponding folding of the edge that going to be set at 30º is commonly guided with the support roller to along the edge to be set. With the help of the robot articulated arm, for a second stage of folding, the unit of useful and scrollable by means of a control, so that the surface adjacent rolling of the folding roller with one position angle of approximately 60º for a new folding of the edge that it will be set at 60º it is commonly guided with the support roller on the edge to be set. After these two stages of folding, the folding line and the folding edge are formed being stable in the predefined type, so that, usually for the other folding stages, it is no longer necessary no support on the folding edge by a roller edge of support in simultaneous rotation. Another dejection of the edge that going to set, for example to a total of 180º, you can then be carried out according to claim 3, by means of another tool unit guided by a robot with a folding roller cylindrical known in itself.

Properly, there is a combination to from a cylindrical folding roller and a roller conical folding that lengthen outwards, which are used one after the other in the four stages of folding: the roller Cylindrical folding is used in the course of a third and a fourth stages for the dejection of the edge to be set up to 90º or, depending on the case, 120º. The conical folding roller, with a cone angle preferably 45 °, is then used in the course of a fifth and sixth stages for a abatement to a total of 150º or, as the case may be, for folding 180º end. The cylindrical folding roller and the roller Conical folding are located opposite the tool unit and, functionally, they are approximated by the articulated arm robot, in function of need and in its operating position, of edge to be set.

The invention is explained in more detail with the Help of a drawing.

Sample:

Fig. 1 a schematic representation of a first stage of the procedure to bring down an edge that is going to crimping a piece to be machined by folding rollers with a crimping device,

Fig. 2 a schematic representation of a second stage of the procedure in the course of which the edge that it is going to be set it is demolished 30º supplementary.

Fig. 3 a schematic representation of a third stage of the procedure, in the course of which the edge that is going to be set is shot down approximately 90º in relation to the initial position,

Fig. 4 a schematic representation of a fourth stage of the procedure, in the course of which the edge that is going to be set is shot down at approximately 120º in relation to the initial position,

Fig. 5 a schematic representation of a fifth stage of the procedure, in the course of which the edge that it is going to be set is shot down approximately 150º in relation to the initial position,

Fig. 6 a schematic representation of a sixth and final stage of the procedure, in the course of which the edge to be set is 180 ° full down, and

Fig. 7 a representation of the principle of a crimping device robot.

In Fig. 1, a crimping device 1 is schematically represented to bring down an edge that is going to set 2 of a first sheet metal construction part 3 around of an edge 5 of a second sheet metal construction part 4 by folding by rollers. In this case, the first piece of sheet metal construction 3 and the second sheet metal construction piece 4 form, for example, a frame of a practicable roof cut, for which the edge 5 of the second sheet metal construction piece 4, when the edge to be set 2 of the first piece of construction 3 is dejected, forms a wall 6 of a channel 7, as see in particular in Fig. 6, about which edge that is going to be set 2 is completely set around the edge 5 of the second sheet metal construction part 4.

The first piece of sheet metal construction 3 and the second sheet metal construction piece 4 together form a piece to be machined and are kept in a folding bed 8 of the folding device 1.

The individual folding stages for the production of the piece to be machined set, illustrated in fig. 6, are represented in Figs. 1 to 6 and are addressed with more details below:

A mobile and powered tool unit 9, and illustrated in fig. 1, is a constituent part of an arm of robot 25, schematically represented in fig. 7, from a robot of articulated arm. In the mobile driven tool unit 9, find a rotary mounted folding roller 10, while pressure roller, which, by means of pressure and with a defined angular position, can be rolled along and in support on the edge to be set 2 for dejection.

In addition, as it is equally visible in particular in fig. 7, a support roller 11 mounted rotatably as an element of support, which is located on the tool unit 9, is arranged in the folding roller sector 10 and is located in relation to the edge to be set 2 opposite to the folding roller 10.

The support roller 11 is made in shape of disk, as well as flat-shaped double cone, while the folding roller 10 in the area of its rolling surface 12 It has a cylindrical shape with a surface width of rolling corresponding to the width of the edge to be set. A rotation axis of the folding roller 13 and an axis of rotation of the support roller 14 are located at a transverse level in relation to the direction of advance of the edge to be set 2.

The support roller 11 is rotatably mounted fixed by means of a carrier arm 26 on the tool unit 9, while the folding roller 10 is rotatably mounted on a carrier part of the folding roller 15. The carrier arm 26 and the folding carrier 15 forms an assembly that has a Approximate U shape. The carrier part of the folding roller 15 mobile is mounted on the tool unit 9 and, with the help of a control mechanism not shown here, is scrollable by drive from a base position to a position of operation shown in fig. 1, in which the roller of folded 10 with its cylindrical rolling surface 12 and the roller of support 11 with the edge of the support roller 16 rest on the edge to be set. As seen in figs. 1 and 2, the edge to be set 2 is locked on the fold line 22 between a conical surface 23 of the support roller 11 and the rolling surface 12 of the folding roller 10.

The carrier part of the folding roller 15 it is preferably mounted by means of a car structure of guide 24, for a linear displacement, on the tool unit 9 and is adjustable with the help of an electronic drive and / or Hydraulic and / or pneumatic.

As can also be seen in fig. 1, the edge of support roller 16 in the course of the first folding stage is rolled leaning along the edge folding line that It will be set 2 for its formation in precise position. At course of this first folding stage, the rolling surface 12 of the folding roller 10 is guided - with an angular position of approximately 30º for a corresponding folding of the edge that it will be set at 30º- along with the support roller 11 along of the edge to be set 2.

Finally, the useful unit 9, as seen in fig. 2, is driven by drive, so that in the course of a second stage of folding, the rolling surface 12 adjacent to the folding roller is guided - with an angular position of approximately 60º for a new folding of the edge that is going to set at 60º- together with the support roller 11 along the edge to be set 2.

As seen in figs. 3 to 6, for another folding of the edge to be set to a total of 180 °, instead of the tool unit 9, hereafter another, second, tool unit 17 guided by robot is provided, which has a roller cylindrical folding 18 and a conical folding roller 19 that extend towards the
Exterior.

As seen in fig. 3 and 4, an area of adjacent bearing 20 of the cylindrical folding roller 18 is guided from a given angular position relative to the position initial origin of the edge to be set 2, in the course of a third stage of folding (fig. 3), of 90º and in the course of a fourth folding stage (fig. 4) of 120º.

Then, finally, as seen in fig. 5 and 6, an adjacent race surface 21 of the folding roller conical 19 is guided in an angular position in the course of a fifth stage of folding (fig. 5) of 150º and in the course of a sixth folding stage (fig. 6) of 180º. Thus the dejection occurs and a coupling coupling between the first piece can be produced of sheet metal construction 3 and the second construction piece of sheet 4.

Claims (3)

1. Procedure for folding a border that is going to be set of a piece that is going to be machined by folding by rollers with at least two folding stages, in which a edge to be set (2) of a first piece of construction sheet metal (3) of the piece to be machined is set with the support of a crimping device (1) around an edge (59) of a second sheet metal construction part (4) of the piece that it will be machined, because a folding roller (10), mounted rotary on a mobile driven tool unit of an arm of a articulated arm robot, depending on the pressure roller, is rolled by the pressure input and with an angular position determined along and in support on the edge that is going to set for dejection, and because a support roller (11) associated with the folding roller (10) and arranged opposite with relation to the edge to be set, as well as rotating mounted on the tool unit (9) in the folding roller sector (10), which has a rotating bearing tread (16) on the periphery, it is rolled with this rolling edge rotary (16) in the course of a folding stage along a folding line (22) of the edge to be crimped (2), characterized because the two pieces of sheet metal construction (3, 4) are introduced before the folding stages at least in the edge sector to be set (2) in a folding bed (8) of the crimping device and are held together, and because then the support roller (11), before a dejection of the edge to be set (2) of the first sheet metal construction part (3), is supported by its edge bearing race (16) on the edge to be crimped (2), of so that, in the course of the first stage of folding, the line of Folding (22) is performed by the bearing tread (16) moving with the folding roller (10), in the form of an edge folding with a precise position. 2. Method according to claim 1, characterized in that, in the course of a first folding stage, the adjacent rolling surface (12) of the folding roller (10) is guided with an angular position of approximately 30 ° for a folding corresponding of the edge to be crimped, 30º, together with the support roller (11) along the edge to be crimped
(2 and because the tool unit (9) is driven movable, so that, in the course of a second stage of folded, the adjacent rolling surface (12) of the roller folding (10) is guided with an angular position of approximately 60º for a new dejection of the edge to be set at 60º together with the support roller (11) along the leading edge to be set (2). 3. Method according to claim 2, characterized in that for a new dejection of the edge that is going to set to 180º total, another tool unit is planned (17) guided by robot, with a cylindrical folding roller (18) and a conical folding roller (19) that extend outwards, which are usable in the course of four other folding stages, so that, the adjacent rolling surface (20) of the cylindrical folding roller (18) in a given angular position with relation to the initial position of origin of the edge to be crimping (2) is guided in the course of a third stage of folding of 90º and in the course of a fourth stage of folding of 120º, and because the adjacent rolling surface (21) of the conical folding roller (19), in an angular position, in the course of a fifth stage of folding, is guided 150º and in the course of a sixth stage of folding of 180º.