DE19548616C2 - Method and device for placing and welding profiles on sheet metal plates - Google Patents

Description

The invention relates to a device for placing and Welding profiles on sheet metal or panels.

In shipbuilding are used to manufacture stiffened sheet metal or of flat panel welding portals used that have a profile transport to the place of placement or a place to be placed Get profile fed and this to the sheet metal plate or Press on the panel to minimize air gaps due to tolerances, by either fixing the profile to the portal and the sheet metal plate is drawn to the profile or the profile on the sheet plate is pressed. Then the profile and the Sheet metal plate by a manually or automatically performed Tack welded together.

Such devices are available in various designs knows. A device is described in DD-WP 73 463, the devices that can be moved on rails in the direction of flow bridge exists. The device bridge is formed from two in parallel running bridge girders, in the middle of which is another girder, which is displaceable in the direction of its longitudinal axis is. At the bottom of this carrier are a number of gripping and Pressure elements arranged with which the profile from a pre Council palette removed and on the sheet metal plate at a previously marked point is pressed.

A trolley is movably mounted on the bridge girder the underside of which is articulated by magnetic or vacuum lifting elements are on both sides of the pressed profile and partially the Pull the sheet metal plate onto the profile. This ensures that the sum of the tension and pressure occurring in the device bridge Forces to tighten the plating or to press the bottom edge of the profile against the plating is zero and the Device bridge is loaded at its maximum by its own weight.

The disadvantage of this device is that during the entire  Welding or stapling the pressure elements are loaded. In addition, tack welding is only carried out manually. Since the Welding technology is not arranged on the device, a separate welding technology can be used. For putting on of profiles on the sheet metal plate is outside the vertical this device is not suitable. The design of the device requires a relatively high level of construction.

DE 27 49 187 describes a device for feeding, position kidneys and messages from profiles for tack welding the Profiles described on panels. This device consists of a horizontally movable, portal-like lifting device with which the profiles by gripping magnets from a ready transported to the welding point on the sheet metal plate become. This is parallel to that between the stands of the portal arranged portal beams a yoke provided. This yoke is vertically movable between the stands and in the longitudinal direction adjustable. Furthermore, the yoke can by means of a ball joint-like connection rotated about a horizontal axis become. This means that profiles can also be slanted onto the sheet metal plate be put on. At the bottom of the yoke are several holding magnets that hold the profile to be welded on Hold on to the sheet metal plate. Foldable profile supports are said to Power failure for the holding magnets the profile against tilting si chern.

A welding frame is also provided on the yoke, on which Lifting magnets arranged to partially lift the sheet metal plate are. In addition, the welding frame has a hydraulic openable, vertically movable pressure roller. This The pressure roller serves the profile partially against that of the Push the lifting magnet down and lift the sheet metal plate to avoid a possible air gap. To avoid of an air gap is thus the profile in the direction pressed the plate and the plate towards the Profiles raised.  

With this device it is achieved that all for the Tack welding on the required compressive forces in the welding frame be taken so that the reaction forces essentially on the relatively small area of the welding frame can be limited. This allows a relatively light construction of Realize welding portal and foundation.

The disadvantage, however, is that the angular alignment of the profiles is very difficult because only in the immediate area of the dist Visible tack weld the required baling pressure existing that is. In the remaining length range, the profiles are only through the holding magnets are held in the lower web area. Therefore is a constant alignment with manual means at the stitching point inevitable. This alignment is now he sword that the pressure roller by the pressurized Hydraulic cylinder is loaded. This step is repeated at each stitching point and thus leads to a significant one Time expenditure.

Prevent the profile from being partially pressed onto the sheet metal plate does not result in a vertical deflection of the profile over the whole te profile length. On the contrary, the vertical dodge will promoted by this point fixation. After finishing This deformation can only be achieved by increasing the stapling process Alignment effort can be compensated.

By separating the portal beam and yoke, the effort is Moving, rotating and very complicated for the vertical stroke and expensive.

Another disadvantage is the Pro version see rotation. Due to a deflection of the hydrauli 's cylinder in the event of rotation and axial displacement of the Profile for fine adjustment of the profile compared to the metal plate te is not a proportionality between the angle of rotation and the cylinder deflection present, d. H. there must be a manual readjustment be made.

An associated welding device is from the description not visible. The tack welding was carried out on the systems Manual execution.  

Then the stiffened in known flow roads Sheet metal plate or the stiffened panel for the fillet weld system clocked, which the profiles and the sheet metal plate with a load-bearing (interrupted or continuous) weld seam ver binds. As a fillet welding system, there are fixed welding pores tals, which are arranged transversely to the flow direction, are provided, with welding equipment for double-sided fillet welding are equipped.

The above devices are disadvantageous in common that the use of very long profiles, e.g. B. <20 m, this Vorrich lines in flow roads reach their capacity limits because the Workplace "put on profile, staple and weld" the Capacity of an entire production line determined.

The state of the art separation of Profilauf and tack welding and subsequent fillet welding brings in addition to a high investment, a number of Problems with themselves. With profiling and tack welding are only the prerequisites for the following manufacturing the construction weld. The stitching must on the one hand so close that even after removal the fixing device the profile at the prescribed angle the sheet metal plate stands and the distance between the tack seams is as small as possible. On the other hand, the stitching should not be allowed run vigorously to comply with regulations to be able to be welded over.

It is an object of the invention, a device of the beginning to improve the type mentioned so that the operations profile put on, tack and / or profile welding more effectively tet that the profile on the sheet metal plate over its entire length horizontally and vertically straight, angularly aligned and is fixed and that the function axial displacement and Rotation of the profile and height adjustment is simplified.  

To solve this problem, a device for mounting and welding of profiles on sheet metal plates or panels, in essentially consisting of two opposite on trolleys fixed supports, between which facilities for welding are arranged which are rotatable about the longitudinal axis and vertically as well as longitudinally movable, and devices for Gripping and holding the profiles, devices for putting on the Profiles on the sheet surface and devices for lifting the Sheet metal plate or the panel to the lower edge of the invention designed in such a way that between the supports one by one defined range rotatable and vertically and axially ver sliding magnetic bar on which a parallel to the magnetic bar trending, with a separate vertical and a separate axial drive provided welding bar is mounted net and that on the underside of the welding bar next to each other other a number of welding torches are attached and that on the Bottom of the magnetic bar we use a number of abutments kende fixing elements are provided. The number of sweats torch corresponds to the maximum profile length to be welded.

It is advantageous that vertically movable on the supports Pallet trucks are arranged with a slewing ring Trunnion with the magnetic bar axially displaceable and swiveling are connected in cash. The axial displacement is done by a arranged on one side of the magnetic bar, the axial drive is in operative connection with the ball slewing ring. At at the ends of the magnetic bar provided rotary actuators, which are even if in operative connection with the ball slewing ring, cause the magnetic bar to pivot.

A feature of the invention is that on the magnetic ball vertical guides at both ends, vertically ver Mobile pallet truck with a pin to hold the welding ball kens are arranged, are attached. The axial displacement the welding bar is carried out by a separately arranged axis alantrieb, in operative connection with the aforementioned pin stands.  

It is further according to the invention that the fixing elements in the knitting richly insulated with the profile fixing plates, which together are electrically connected and at the same time as sweat serve current feedback.

In an embodiment of the invention it is proposed that at the A row of torches next to each other on the bottom of the welding bar units are arranged opposite each other, each burner holding means for positive guidance of the burner unit in has the throat between profile and sheet surface. The The burner unit can be swiveled on the burner holder hung up and on a control curve until just before the throat forced.

An inventive feature is that lifting elements with articulated lifting magnets on the magnetic bar in series opposite are arranged.

The solution according to the invention offers a number of advantages. The device according to the invention is used for preliminary calibration already horizontally and vertically the removal of profiles from the stock range. When putting on the sheet metal plate supports the profile along its entire length Abutment and is placed fully aligned. With that ent the news of the profile falls before the welding process. The necessary time for the process of stiffening sheet metal slabs or panels with profiles can therefore be essential be shortened. This is especially for processing longer profiles (<20 m) of crucial importance.

The invention is illustrated by an embodiment explained. In the accompanying drawings:

Fig. 1 is a front view,

Fig. 2 shows a detail I of Fig. 1,

Fig. 3 is a section AA of Fig. 1,

Fig. 4 shows a detail II of FIG. 3,

Fig. 5 is a schematic representation for welding 1st cycle, weld start,

Fig. 6 is a schematic illustration for welding 1st cycle, weld end,

Fig. 7 is a schematic illustration for welding 2nd cycle, the start of the weld,

Fig. 8 is a schematic illustration for welding 2, cycle end weld,

Fig. 9 shows a schematic representation of the Abschweißens in the form of interrupted fillet welds, the weld cycle 1,

Fig. 10 shows a schematic representation of the Abschweißens in the form of interrupted fillet welds, welding Cycle 2.

The device consists essentially of two opposite lying attached to chassis 1 supports 2 , between which a magnetic bar 5 , on which a parallel to the magnetic bar 5 duri fender welding bar 6 is mounted, is arranged transversely to the direction of flow. On the supports 2 vertically movable lifting carriage 3 are provided, each having a ball slewing ring 16 with a pivot 28 . The pivot 28 protrude into both ends of the magnetic beam 5 and take this over Laufrol len 29 , which are mounted on the pivot 28 above. The lifting truck 3 is driven by means known per se.

On the magnetic bar 5 , vertical guides 7 are fastened at both ends, on which vertically movable lifting trucks 4 are arranged, which are connected to the welding bar 6 via a pin 14 . To drive the pallet truck 4 , a hydraulic cylinder 15 , which is supported on the magnetic bar 5 , is provided.

Both the magnetic bar 5 and the welding bar 6 are axially displaceable. For this purpose, the magnet bar 5 is arranged a hydraulic axial drive 8 on one side, the connection on the pivot pin 28 in operative connection with the ball pivot 16 protrudes. Instead of the hydraulic drive, mechanical or electrical devices are also conceivable. This Axi alantrieb 8 is used when placing the profile 20 on the sheet metal surface. At both ends of the magnetic bar 5 , a hydraulic rotary drive 10 , which is in operative connection with the pivot 28, is also provided. Both Einrich lines are used to adjust the magnetic bar 5 and the welding bar 6 and the gripping and holding elements 12 arranged on them for the profile 20 in a vertical position. On the underside of the magnetic bar 5 , a series of fixing plates 21 are arranged at certain intervals, which can be extended and locked vertically via fixing elements 11 . As the fixing element 11 , both hydraulic working cylinders and self-locking threaded spindles are conceivable. The fixing elements 11 are designed so that they are locked after lightly pressing the profile 20 on the sheet metal plate and thus form an abutment acting over the entire length of the profile 20 ge. The fixing plates 21 also serve as a welding current feedback. It is advantageous to arrange the gripping and holding elements 12 on the outer jacket of the fixing element 11 . At the lower end of the gripping and holding element 12 , a holding magnet 13 is hen vorgese. The gripping and holding elements 12 in connection with the fi xierelemente 11 serve to remove the profile 20 from a supply pallet and press evenly and with low contact pressures across the entire length of the profile against the sheet metal plate or panel.

In addition, lifting elements 19 with articulated lifting magnets 17 are arranged laterally on the magnetic bar 5 in a row. These serve to lift the sheet metal plate to the lower edge of the profile 20 .

The welding bar 6 is also axially displaceable independently of the magnetic bar 5 . For this purpose, an axial drive 9 in the form of a spindle drive is provided on one side of the welding bar 6 , which is in operative connection with the pin 14 . Instead of the spin del drive, an electrical or other mechanical drive is also conceivable. This axial drive 9 is decisive for the speed of the arranged on the welding bar 6 Brennerein units 18th The maximum feed speed of the axial drive bes 9 corresponds to the welding speed and the maximum process path corresponds to the maximum length of the seam to be welded, which can also be a tack weld. The Brennerein units 18 are on the underside of the welding bar 6 next to each other in two opposite rows pivotally suspended in the y-axis. The number of burner units 18 depends on the maximum length of profile 20 to be processed. They are arranged so that they lie between the fixing elements 11 and get into the working position on both sides of the profile 20 . The burner unit 18 is via a control roller 24 , a lifting device 22 and a control cam 23 to the effect. As a lifting device 22 , a pneumatic drive is used in the exemplary embodiment.

The arrangement of welding sources 25 can take place on a support 26 which is fastened on the supports 2 .

The fitting and welding of the profiles 20 is carried out as follows:

The sheet metal plate or the panel is retracted via suitable transport devices into the working area of the device for placing and tack welding the profiles 20 and placed on a building support 27 . The device is set accordingly before, ie the two lifting trucks 3 with the articulated magnetic beam 5 are moved on the supports 2 at profile removal height. The rotary drive 10 is at 0 °, the Axialan drive 8 of the magnetic bar 5 to the zero position and the Axialan drive 9 of the welding bar 6 to the initial position, ie seen 0 mm in the welding direction. The welding bar 6 is in the upper end position.

The device moves in the direction of the profile stock pallet, in which the profiles 20 stand vertically in individual boxes. In the final phase of the movement of the device, the holding magnet 13 moves in an almost horizontal position against the profile 20 in the lowest Profilbe rich. When the holding magnet 13 contacts the profile 20 , the drive of the device is switched off. According to the pro fill length, the corresponding number of holding magnets 13 is activated and the profile 20 is non-positively connected to the device. Then all fixing elements 11 are moved together vertically downwards and locked in this position after reaching the upper edge of the profile 20 . This ensures that a profile 20 aligned over the entire length of the profile is transported for tack welding. The magnetic bar 5 is then moved vertically at the transport height.

The device then moves in the direction of the tear line on the sheet metal plate or panel, the rough position being approached with the aid of a measuring device. Magnetic bar 5 and welding bar 6 are lowered vertically until the profile 20 is at a distance of approximately 10 mm above the sheet metal surface. Now there can be axial positional differences in the longitudinal direction on the sheet metal plate or the panel, skewing of the profile 20 or intentional inclination of the profile 20 by fine alignment by means of the axial drive 8 of the magnetic bar 5 , by rotating the magnetic bar 5 by means of the rotary drive 10 or / and compensated for by tilting the device. The profile 20 is then placed on the sheet metal surface without pressure.

Subsequently, all disposed on the front and rear side of the magnetic beam 5 solenoids 17 are by means of the elements 19 Hubele simultaneously lowered onto the sheet surface, elec tric activated and tightened. If solenoids 17 do not hit the sheet metal surface because the panel is shorter than the working width of the magnetic bar 5 , these solenoids 17 move into the top dead position, ie back to the starting position. Accordingly, only the solenoids 17 that come into contact with the sheet surface are attracted. These lifting magnets 17 are attracted against the fixing elements 11 acting as counter bearings. As a result, the sheet presses on the lower edge of the profile 20 , the profile 20 is pressed with the upper edge against the fixing plates 21 and the air gap between the sheet and the profile 20 is equal to 0.

Now, as can be seen from FIGS . 5 and 9, the first cycle of fillet welding is carried out by drawing an interrupted weld seam from a cycle unit, which is formed in the exemplary embodiment from four pairs of adjacent burner units 18 , the seam length of which can be adjusted and as a tack seam is formed or should be about 500 mm as in the embodiment. For this purpose, the welding bar 6 moves to the lowest position by lowering the pallet truck 4 . The lifting device 22 is retracted and the acti fourth burner units 18 move against the sheet metal surface by gravity. Via the control cam 23 and control roller 24 , the presetting is made to the required torch welding angle, which corresponds to the fillet weld. Shortly before the weld fillet is reached, the control roller 24 is released from the control cam 23 and the burner unit 18 is constantly pressed into the fillet between the sheet and the profile 20 by means of the force of gravity on the y-axis, giving in if necessary The fillet weld is carried out on both sides of the profile 20 simultaneously. For this purpose, the axial drive 9 of the welding bar 6 is switched to the welding speed. After welding, a position of the torch units 18 is reached, as shown in FIG. 6, the welding bar 6 is moved back to the starting position and the next group of torch units 18 is activated. Depending on the number of torch units 18 present and the welding current sources, the welding process is repeated along the profile 20 until there is a continuous, interrupted fillet weld on both sides (see FIG. 9). It is also possible to weld when resetting the welding bar 6 , so that the starting position is reached after two welding movements in opposite directions. The necessary filling of the end craters of the weld seams is achieved by briefly burning the arc after the end of the movement.

Then, as can be seen from FIGS. 7 and 10, the second cycle of fillet welding can take place. For this purpose, the solenoids 17 and the holding magnets 13 are deactivated and moved back into their starting position by means of their actuating devices. In their starting position, the fixing elements 11 are also returned. The magnetic bar 5 is then moved longitudinally until the fixing elements 11 , the gripping and holding elements 12 and the lifting elements 19 are displaced by the welded weld length, i.e. approximately 500 mm, and the area for the fillet weld to be welded is thus cleared. Since the welding bar 6 has also been moved by the aforementioned amount of approx. 500 mm, the welding seams of the 2nd cycle can be welded analogously to the 1st cycle. It should be noted that an overlap is created with the existing weld. The result is a continuous, double-sided fillet seam. The position of the welding bar 6 reached can be seen from FIG. 8.

If it is structurally necessary, the device instead of a continuous fillet weld be welded. The seam length can be smaller or larger be larger than approx. 500 mm, and it can also be a staggered one Acting fillet weld. The weld distance is in both cases variable.

If the profile 20 is completely welded, the device is brought into the starting position and the next profile 20 can be fetched from the supply range.

Claims (11)

1.Device for placing and welding profiles on sheet metal plates or panels, consisting essentially of two opposite supports fixed on bogies, between which devices for welding are arranged, which are rotatable about the longitudinal axis and vertically and longitudinally movable, and devices for Gripping and holding the profiles, devices for placing the profiles on the sheet surface and devices for lifting the sheet metal plate or the panel to the lower edge of the profile, characterized in that between the supports ( 2 ) a rotatable by a certain range and vertically and axially Slidable magnetic bar ( 5 ), on which a parallel to the magnetic bar ( 5 ) running, with a separate vertical and a separate axial drive ver provided welding bar ( 6 ) is mounted, and that on the underside of the welding bar ( 6 ) one next to the other Row welding torches are attached as well on the underside of the magnetic bar ( 5 ) a number of fixing elements ( 11 ) acting as counter bearings are provided. 2. Apparatus according to claim 1, characterized in that on the supports ( 2 ) vertically movable pallet truck ( 3 ) are angeord net, the pivot pin ( 28 ) with the magnetic bar ( 5 ) axially displaceable and pivotable via a ball slewing ring ( 16 ) are connected. 3. Apparatus according to claim 1 and 2, characterized in that the magnetic bar ( 5 ) by an on one side of the magnetic bar ( 5 ) arranged axial drive ( 8 ), which is in operative connection with the ball slewing ring ( 16 ), is axially displaceable. 4. Apparatus according to claim 1 to 3, characterized in that a rotary drive ( 10 ) is provided at both ends of the magnetic bar ( 5 ), which is operatively connected to the ball slewing ring. 5. The device according to claim 1, characterized in that on the magnetic bar ( 5 ) at both ends vertical guides gene ( 7 ), on which vertically movable pallet truck ( 4 ) with a pin ( 14 ) for receiving the welding bar ( 6 ) arranged are attached. 6. Apparatus according to claim 1 and 5, characterized in that the welding bar ( 6 ) by an axial drive ( 9 ) which is operatively connected to the pin ( 14 ) is axially displaceable. 7. The device according to claim 1, characterized in that the fixing elements ( 11 ) in the effective area with the profile ( 20 ) insulated fixing plates ( 21 ), which are electrically connected to each other and simultaneously serve as welding current feedback. 8. Apparatus according to claim 1, 5 and 6, characterized in that a row of burner units ( 18 ) are arranged opposite one another on the underside of the welding bar ( 6 ). 9. The device according to claim 8, characterized in that each burner holder has means for positively guiding the burner unit ( 18 ) in the throat between profile ( 20 ) and sheet metal plate or panel. 10. The device according to claim 9, characterized in that the burner unit ( 18 ) is pivotally suspended on the burner holder and is via a control curve ( 23 ) with control roller ( 24 ) until shortly before the throat is forced. 11. The device according to claim 1, characterized in that lifting elements ( 19 ) with articulated lifting magnets ( 17 ) on the Ma gnetbalken ( 5 ) are arranged in series opposite.