DE19642831C2 - Method and device for applying self-adhesive protective film to bodies - Google Patents

Description

The invention relates to a method and an apparatus for Application of self-adhesive protective film on bodies for the dispatch of vehicles.

In the series production of many car manufacturers, the driving witnesses are prepared for dispatch in such a way that they do not Damage, especially that the painting due to storage and weather conditions are not affected. Be for the transfer of customers by train or even ship transport necessary, so you have the vehicles with wax protection layer covered, which is removed before customer delivery had to become. The residue-free removal of the protective wax was not just a labor-intensive job, it was stressful also people and the environment because of the solutions used tel. That is why the body has recently been adopted due to self-adhesive foils during transport protect. Because this type of protection is not only very effective, but also relatively expensive, you don't just have it as Protection during transport, but also as protection during the vehicle assembly provided and accordingly the protective film be before final assembly of the vehicle, d. H. immediately after applied the body paint.

The protective film should be free of wrinkles and bubbles be brought in because of wrinkles or blisters after a certain storage time can form a microclimate, which ever by paint type and color u. U. can lead to visible traces.  

JP 6-255 873 A shows a device for automated Application of self-adhesive protective film on bodies, at the side next to the driveway of the vehicles to be glued A guide tower with vertical guides was installed in a fixed position is. The actual application device is on it balanced and vertically drivable up and down movable guided. The move on the guide tower in vertical guides Liche device comprises a driven unwinding device with supply roll for the film with several deflecting rollers and a so-called dancer roller, which are mounted in side cheeks. The Unwinding device can pull the film according to a peel process - the dancer roll rises - without tension keln and track. The film end of the unwinder is in a dedicated, pliers-shaped retaining strip held with crenellated recesses. Also in fe The assignment to the unwinder is a cut off direction provided with a transverse knife. Of the Unwinder protrudes from a horizontal boom that extends across the route of the vehicles and across their width stretches. At the bottom there are a first and a second Gripping bar movably arranged in guide rails, the first, gripping bar facing away from the roller due to a drive controls and defines movable and the second, in close proximity stood to the holding bar of the unwinder Gripping bar is only passive and can be moved over a short distance. The first gripping bar comprises a carrier on which three fernge Operates gripping tongs that are attached to the film Pinch the end of the pliers in three discrete locations and hold it mechanically at certain points. The grippers of the first gripping bar can pass through the second gripping bar down into the crenellated recesses in the retaining strip drive and take over the held film end there. In order to the first gripping bar passed through the second gripping bar Ren, and thus the film reflected during the withdrawal phase be pulled past the second gripping bar without standing there are openings in the second gripping bar attached through which the gripping pliers of the first gripping bar  can drive through. Secondly, only at the ends of the second gripping bar each a strong swiveling gripping finger seen that from the edge of the film web down to its sticky Swing the underside around and pinch it at the edge can. By moving the first gripping bar to the end of the boom towards the film from the self-propelled supply roll span peeled off without tension, the film between through the cheeks of the open holding bar and on the underside gliding past the second gripping bar. As soon as enough film is deducted, both the retaining bar and the the side gripper of the second gripping bar under the under closed continuous film, so that the hold on. In addition, the film between the closed NEN gripping or holding bars by means of the cutting device cut off. The first gripping bar now moves in the direction towards the end of the boom, causing the cut piece of film is averaged over the vehicle along the boom. Here drags the movable gripping bar over the detected and out stretched film piece with the other gripping bar, due to an elastic movement resistance of the second gripping bar a certain tension is built up in the film. Well now by lowering the boom along the guide tower averaged and stretched piece of film on a horizontal surface of the vehicle are lowered. After opening the two The cantilever bars can be raised to the starting position become. In the known device, the film is through the Grip bars at one end only at two and at the other end only at three Points recorded and when taking over the piece of film between initially take over the two gripping bars without tension men. The mentioned internal stress of the film is only after Cut the film between the two relative to each other movable gripping bars separately and retrofitted and maintain when lowering. Because of this is a wrinkle-free stretching and depositing of the film on the body cried very questionable. A wrinkle and bubble free application of Protective film is very important, however.  

JP 6-254 451 A also deals with the mechanized Apply self-adhesive protective film to car bodies. A The film web is first laid flat on an air-permeable, especially designed and circulating support track designed there fixed by vacuum, the adhesive side of the film after at the top, i.e. away from the base. From the laid out flat The film sheeting will then be the required film cuts according to the body parts to be covered with egg ner separated laser cutting system. Then the Foil cuts indirectly with the interposition of a turn device or directly by a handling robot taken over and glued to the assigned body part. However, it can in the foil taken over by the handling robot no tensile stress can be built up. Rather, it is recorded film piece tension-free and limp, so that it do not apply to the body without wrinkles and bubbles leaves.

Based on this state of the art, it is the task of the He finding, the application process or the corresponding method further training in such a way that the quality of the Ap application with regard to freedom from bubbles and wrinkles brought protective film improved and paint damage far avoided and personnel costs saved can.

This task is invented with regard to the application method according to the method with the features of claim 1 and with respect to the device by the device with the Features solved according to claim 20.

Then the mechanization of the film application to the Body a certain rectangular piece of protective film from a supply roll using a robot-guided Tensioning frame, preferably with suction legs, on the non-adhesive tendency page recorded, deducted from the supply roll and ded cut. Before applying the foil cut to the checks  series will be tear lines in the Be rich of accessories with a heated, mechanically along Defined contour lines guided serrated from the not adhesive foil side perforated. Only then will it be like this prepared protective film stretched out without creases in the stenter frame from the handling robot to the associated surface area lowered in position, created bubble-free and with one Scraper bar pressed. In this way, al le surface areas glued over. In the area of accessories become protective film parts along the perforated tear lines deducted and the areas cut out so as to fit the assembly.

In an expedient embodiment of the invention, the first loosely applied foils all pressed together. In the area the protective film is cut through and the Cut edges in the gap area with a rotating brush pressed.

Further expedient embodiments of the invention can Subclaims are taken; otherwise the invention based on an exemplary embodiment shown in the drawing les explained below; show:

Fig. 1 shows the lay-out of a production line for automated, standard gluing of passenger cars in plan view,

Fig. 2 shows an enlarged detail of the basic working stations of the production line 1 is also shown in FIG., In plan view,

Fig. 3 and 4 are side view (FIG. 3) and top view (Fig. 4) to a device for demand-supply holding and peeling of protective film from a supply roll,

Fig. 5 is a detail view of a squeegee from the Einrich processing of Fig. 3 and 4 for holding the film vorauslau fenden end, facing the direction of the normal un tenliegende, saugwirksame side of the squeegee,

Fig. 6 is a robot-guided tensioning frame for the automated handling of a cut from the supply Folienzu section,

Fig. 7 is a cross-sectional showing through the leading-side suction bar of the clamping frame of FIG. 6 taken along section line VII-VII, additional gripper elements,

Fig. 8, the suction of the chute for holding the leading end film tail in registered opposition to the leading end of the suction clamping frame according to Fig. 6,

Fig. 9 is a longitudinal view of the station for the gluing of the Da ches in the stage where the stretched held ready in the clamping frame from the film sheet hanging Perforati is processed onsroboter,

Fig. 10 is a stretched in a tenter frame with different cut Folienzu retracted therein Perforati onslinien,

FIGS. 11 and 12 are two different side views of a Tan-the perforating tool, which can be placed äquidi stante perforation in the stretched bereitge maintained protective film simultaneously two,

Fig. 13 is a double tool for perforating double or mono-perforation,

Fig. 14 is a perspective view of a displaceable body lie cross portal with a vertically movable foil blade for pressing the applied Schutzfo,

Fig. 15 shows a cross section through the coating bar of the portal shown in FIG. 14 taken along section line XV-XV, and

Fig. 16 is a side view of a robot-guided double tool for measuring the position and for freeing joints as well as pressing the edges of the protective film.

Before the device for automated gluing of the body 1 is dealt with in detail, the method according to the invention for film application is first described in more detail with reference to the drawings.

The self-adhesive protective film 23 provided in supply rolls 21 is automatically applied to certain, preferably the horizontal surfaces of car bodies 1 in the customary notchback version. In principle, it is possible to apply the protective film 23 to the fully assembled vehicle or at any other point in time during the final assembly of the vehicle on the body 1 . However, since the applied protective film 23 already offers some protection of the paint against assembly-related damage during assembly, the protective film 23 is applied to the freshly painted bodies 1 according to the illustrated embodiment, which then run into the final assembly with the protective film 23 . Also, a sticker on the side surfaces of doors, preferably the front doors used particularly often during assembly and in particular the driver's door is before geous. Whether the protective film 23 is now applied before, during or after assembly, in any case the film has to be cut out in places of accessories.

For automated film application, a measured piece of film is pulled from the film supply by a robot-guided clamping frame 37 and transferred into the clamping frame 37 without creases and under a certain internal tension. In these from stretched and, thanks to the tensioning frame 37, almost like a rigid workpiece handleable foil blank 44 are in front of the Foli enapplikation with a likewise robot-guided Perforati tion Tool correct position of perforations in the Folienzu cut down 44 that a montage conditional remove limited hours ter film regions by tearing along the Perforationslini s enable. Only then is the film blank 44 provided with the perforation lines lowered by the stenter robot 35 in the correct position on the associated surface part of the body 1 and pressed onto it without any folds or bubbles.

In detail, the following process steps are provided: The leading end of the protective film 23 , starting from the supply roll 21 , is fixed and provided in such a way defined and wrinkle-free that the film end 26 is at least partially accessible on the non-adhesive side 24 . During the peeling, the protective film 23 is continuously treated antistatically in a freely stretched span, so that the film cuts 44 can later also be applied to the body surface without any problems up to the edge. The aforementioned end 26 of the protective film 23 on the non-adhesive side is taken over by the stenter frame, from the stenter frame robot 35 in the pulling direction a guided first suction bar 38 and loosening the film 23 from the supply bracket.

Now a size-matched to a surface portion tes rectangular piece of protective film 23 from the supply roll 21 is pulled off and stretched out as long as the piece of film still adheres to the supply. A trailing, second squeegee 39 of the clamping frame 37 is placed on the non-adhesive side of the stretched-out protective film 23 and also holds the film 23 there by switched vacuum. As a result, the pulled-off ne piece of film is clamped in the clamping frame 37 and at the same time a new stock-side film end 26 is held on the supply holder again. By means of suitable constructive measures during the unwinding of the protective film 23 , it is ensured that the film layers of the winding have different adhesion to one another and despite different winding diameters that the protective film 23 is removed from the supply roll 21 with constant tension. A transverse knife cuts the peeled, already held in the clamping frame 37 th piece of film from the supply.

The tenter frame robot 35 holds the now freely movable film blank 44 in a manner appropriate to the work and defines the position of the perforation robot 50 which, in the freely stretched film blank 44, the required tear lines 45 , 45 ', 45 "from the non-adhesive film side by means of a heated toothed washer 55 or a heated one perforated, crown-like perforation stamp.

The film blank 44 pretreated in this way is now aligned by the clamping frame menrobot 35 to the associated surface section 3 , 4 , 5 of the body 1 provided in a defined manner, lowered onto it and applied to it in the stretched-out and perforated state. When the film 23 is applied to the curved body surface, the tension of the film cut 44 held on the edge is increased. So that it does not tear at the tear lines, the edge clamping is reduced to a lower value in this transfer phase, so that the film edge can slide out of the edge clamping with a low tensile stress in the film blank 44 . The protective film 23 is then pressed by means of a slidable and elastic scraper strip 67 . Advantageously, all the surface parts to be protected are first loosely covered with protective film 23 and then all film sections are pressed on in a uniform process.

In the area of glued joints 6 , the film 23 can be cut by means of a robot-guided knife, the cutting edges being pressed on with a rotating brush 87 . The protective film parts in the area of attachments, which are disruptive during the subsequent assembly, are pulled off along the perforated tear lines, preferably manually.

With regard to a simple and residue-free removal of the protective film 23 after use, ie when the vehicle is delivered to the customer, the adhesive property 25 of the protective film 23 is deliberately designed to be lower than that of normal pressure-sensitive adhesive strips in packaging technology. However, to ensure that the protective film 23 does not come loose when driving - it is also possible to carry out trial and short transfer drives in the film-glued state - the edges of the protective film 23 lying in the direction of travel are secured separately by a transverse adhesive strip with higher adhesion. These security strips are attached after complete application of the protective film 23 in one of the downstream manual work stations 17 . It is in those cases in which the film blank 44 on the longitudinal edges of the protective film 23 must be secured to the body 1 with a securing strip - e.g. B. when gluing doors - also think bar to merge this security strip immediately with the protective film 23 on the reel stand 20 and to handle and apply this film composite ge together.

After a lot of protective film 23 is consumed in a standard film coating of vehicle bodies 1 , it is advisable to provide an automatic roll change in the rolls stand 20 for the protective film 23 and roll the stock 21 so large, that is, as much protective film 23 in each a supply roll 21 that a supply roll 21 is sufficient for the need for a complete shift.

The production line shown in FIG. 1 10 for auto mated, standard gluing of passenger cars has a plurality of transport moderately linked workstations 12 to 17, through which the are conveyed adherend, position on the conveying carriage 11 defines fixed bodies 1 cyclically. In the individual workstations 12 , 13 , 14 and 16 according to FIG. 2 with work to be carried out automatically, the bodies 1 are fixed in a defined position within a certain tolerance range indirectly via the conveyor slides 11 and fixing devices provided in the stations. In between there are workstations with manual work in which a defined position fixation is not necessary. The individual workstations are spaced by the length of a body series 1 plus a range of motion and safety areas.

The notchback body 1 contains several horizontal upper surface areas, namely bonnet 3 with adjacent parts of the fenders, boot lid 4 also with adjacent fender gel areas and the roof 5 . The protective film 23 to be applied thereon is stored in supply rolls 21 of different widths R, which are held for processing in corresponding roll stands 20 , 20 ', 20 ". In the horizontally mounted supply roll 21 , the non-adhesive side 24 faces outwards the supply roll 21 peeled off protective film 23 over a small, movably mounted deflection roller - dancer roller 22 - the protective film 23 is guided to a suction bar 27 on which the film end 26 is held on the non-adhesive side - with the adhesive side 25 facing downwards.

The protective film 23 is more or less statically charged for various reasons, which disrupts automated processing and film application. Therefore, the protective film 23 is antistatic when removing from the supply roll 21 be. This can be done by a grounded contact rod made of electrically highly conductive material across the entire width of the film on the non-adhesive side. In order Staer Kere electric charges to 23 entfer NEN rapidly from the protective film, ionized air can be applied to the protective film 23 ge bubbles, which compensates for the charge of the film 23 are.

Experience has shown that the individual layers within the winding compound of the supply roll 21 adhere more firmly to one another in the inner winding layers than in the outer winding layers. This leads to an increase in the trigger voltage as the supply roll 21 becomes smaller. On the other hand, however, the protective film 23 should be taken over with a constant film tension in the tenter 37 . To compensate for any interference, he mentioned dancer roller 22 is provided, which is mounted on a rocker 31 - in relation to the supply roll 21 - radially movable and can be pressed onto the circumference of the supply roll 21 by means of a pressure cylinder 32 with adjustable force. In addition, the dancer roller 22 can be braked by means of a brake, not shown, with a braking torque that can be adjusted in a controlled manner. Such a brake can, for. B. as axially loaded Lamellenbrem se or as a conical brake inside the dancer roller 22 is brought under. Due to the adjustable force with which the dancer roller 22 is pressed against the supply roll 21 and due to the moment with which it is braked on the other hand, regardless of changes in the diameter and the layer adhesion of the supply roll 21, a consistently high pulling force and thus a constant transfer voltage can be ensured in the protective film 23 . As a result, good conditions for a constant application result of the protective film 23 can be created.

The supply rolls 21 are advantageously designed in terms of their size to meet the need for a complete shift, so that only one roll change is required per shift. In addition, a device for an automatic roller lenwechsel is provided, which is designed such that when the last piece of film is used by the old supply roll 21, the new supply roll 21, which is kept on standby, is automatically put into use and its leading film end 26 is placed on the suction bar 27 becomes. Such a role change l device is not shown in the illustrated game Ausführungsbei. It is therefore only mentioned that in place of the fixed individual storage of a supply roll 21 is on both sides provided in the roll stand 20 each have a rocker mounted centrally at the ends of a respective supply roll 21 is rotatably supported. Of these two supply rolls 21 , one is in the position of use - as shown in the example - is positioned, whereas the other supply roll 21 is kept ready for the length of the rocker. Furthermore, in the device for an automated transfer of the foils of the 26 to the suction bar 27, a swinging along with the rocker arm is provided, which extends with a rod over the roll lenwidth. To prepare for an automatic roll change, the film end 26 with the adhesive side of the protective film 23 is applied manually to this rod. When changing roles then this bracket is pivoted from below to the squeegee 27 , which takes over the film end 26 of the new supply roll 21 before.

Depending on the production numbers per shift and depending on the cycle time when film application, supply rolls 21 , which are sufficient for one working layer, are so heavy that they can no longer be stored or handled on their outer circumference, because the films 23 would otherwise have pressure points and the Wrapping flat spots would be obtained, which would impair proper processing. Rather, film rolls 21 of this weight or diameter class - the film width here has no decisive influence - must always be picked up in the center with special dishes and stored in separate racks. For this purpose, the rollers 21 must be supplied with a metal mandrel, which remains with her from the manufacture of the winding to the consumption of the roller 21 and must be returned to the manufacturer after consumption.

The mentioned roll stand 20 are in the two Beklebesta tions 12 and 13 for the hood and trunk lid or for the roof. For each surface section 3 , 4 , 5 to be glued, a stenter robot 35 , 35 ', 35 ''is also provided, which has the usual six axes of movement and is freely programmable. The reel stand 20 and stenter robot 35 for the hood 3 on the one hand and the reel stand 20 'and stenter robot 35 ' for the boot lid 4 on the other hand are arranged in the same work station 12 . For the film application on the roof 5 , a separate work station 13 is provided. A freely programmable, preferably six-axis perforation robot 50 or 50 'is also arranged in each adhesive work station 12 and 13 . To be precise, these are arranged above the body 1 for reasons of space in such a way that the working space of the perforation robot 50 , 50 'comes to lie approximately centrally in the work station 12 , 13 . The perforation robot 50 , 50 'can be attached to the ceiling construction of the hall or suspended from a portal, or it can be mounted on the side of a vertical mounting surface - wall-mounted - for example on the wall of the hall, on a pylon rising from the hall floor or on a console attached to the hall ceiling or wall.

On the roller stands 20 , 20 ', the leading end 26 of the protective film 23 is defined and held in position by the squeegee 27 and provided in such a manner that the foil end 26 on the non-adhesive side 24 is at least partially accessible. The stator-side squeegee 27 is perforated on its underside 28 and can be vacuumed with suction or be ventilated, so that the adhesive effect of the squeegee 27 can be canceled if necessary and in a targeted manner. The facing in the pull-off direction a of the film 23 loading edge of the suction bar 27 is contoured in a crenellated manner, the projections 29 also being perforated on the underside for effective suction. As a result, the protective film 23 can be securely held right up to the foil end 26 ; nevertheless, the immediate film end 26 is accessible from the top in the area between the projections 29 .

Furthermore, egg ne device 30 for right-angled cutting of peeled protective film 23 is provided in the immediate vicinity of the suction bar 27 . This cutting device 30 consists essentially of a transverse to the film web duri Fende guide bar in which a knife mechanically guided and -. B. is driven by a pneumatic cylinder via a cable. A one-off transverse movement of the knife in the guide bar reliably detaches a piece of film that has been removed from the supply on the suction bar 27 . With regard to knife wear - the protective film 23 must be cut with a small cutting force, ie without the risk of wrinkles - a simple and quick knife change must be ensured by appropriate structural design. An automatable knife change or a knife with a longer service life due to better knife material and / or due to a displaceable blade with increased wear reserve (displaceable long blade or rotatable circular knife) could be advantageous.

The stenter robots 35 , 35 ', 35 ''carry on their Arbeitsar men 36 , 36 ', 36 '' each a to the size of the surface area 3 , 4 , 5 matched, rectangular Spannrah men 37 , the two opposite Has suction strips 38 , 39 arranged on the long sides for holding a film blank 44 , specifically a leading suction strip 38 and a trailing suction strip 39 . The individual suction strips 38 , 39 can be switched on or ventilated via separate vacuum lines 46 or 46 '.

The leading in the pulling direction a suction bar 38 of the clamping frame 37 is on the long side facing away from the inside of the frame - matching the crenellated contour of the stand-side suction bar 27 - also contoured. Namely, the projections 40 of the tenter frame squeegee 38 can be immersed between the gaps of the standard suction bar 27 until they come into contact with the protective film 23 . At the leading suction bar 38 le diglich the end faces 41 of the projections 40 are perforated ge suction effective and can be subjected to negative pressure. In the film takeover, the end faces of these frame-side projections 40 between the projections 29 of the stand-side suction bar 27 are lowered and brought into contact with the accessible areas of the film 26 , whereby the ready-made film end 26 is taken over by the tenter 37 .

The projections 29 of the upright suction bar 27 are narrower (width b) than the projections 40 of the stenter suction bar 38 , which are formed with a width B. The narrow projections 29 only need to hold the film end 26 in a wrinkle-free manner, whereas the wide projections 40 of the Spannrah men suction strip 38 have to transmit the high pull-off forces of the self-adhesive protective film 23 from the supply roll 21 . To increase the pneumatic holding force of the stenter suction guide 38 , the bores of the holding surfaces on the contact side are countersunk over a large area. It has to be taken into account here that the film 23 can only be pulled off the supply roll 21 due to the self-adhesion with great effort. In order to be able to hold the foil end 26 securely on the stenter suction squeegee 38 when pulling it off, this is provided with pivotable gripping means 43 for additionally holding the protective film 23 verses. The flap-like gripping means 43 - driven by swivel cylinders 49 - can be swiveled about a swivel axis 48 and can be placed under prestress on the end face 41 of the projections 40 which can be pressurized.

To take a film blank 44 from the roll stand 20 , the clamping frame 37 is placed transversely to the protective film 23 , that is to say vertically in the case of game, with the leading suction strip 38 on the protective film 23 or the suction strip 27 on the stand side, that the end faces 41 of the frame-side projections 40 between the gaps of the stand-side squeegee 27 and put on the non-adhesive side 24 of the film 23 . Now the leading squeegee 38 is struck with vacuum and the gripping means 43 are closed so that they lie on the adhesive side 25 of the film end 26 received . The stand-side suction bar 27 is now ventilated, so that the film end 26 is free there. By parallel Fortbe because of the leading squeegee 38 of the stenter 37 away from the stand 20 by means of the stenter robot 35 , a measured length of film 23 is deducted from the roll 21 , where at the same time the stenter 37 is pivoted in the direction of the horizontal, so that towards the end of the deduction and pivoting movement, the trailing squeegee 39 of the clamping frame 37 bears against the film 23 . In this state, the second frame-side suction bar 39 and the ständersei term suction bar 27 are next to each other at a close distance. Both neighboring suction strips 27 and 39 are - as long as the film 23 is still under the tension of pulling off - strikes with vacuum and then the cutting device 30 is actuated, so that a film blank 44 is stretched out in the stenter 37 and taken over by the stenter 37 . During the film cut through the film 23 on both sides of the cutting device 30 is held securely by suction strips 39 and 27 , so that there is no risk of wrinkling caused by the force effect of the moving film separating knife. After cutting from a new film end 26 is available on the stand-side squeegee 27 for a new takeover situation defined and wrinkle-free.

In practical operation, it can never be completely ruled out that the stenter robot 35 collides with the bulky stenter 37 somewhere, especially during the setup phase of the robot 35 or when any maintenance work is carried out in the system. Smaller collisions are usually survived by the robot 35 and essentially also by the clamping frame 37 without damage, but the clamping frame 37 can warp due to a small collision. In order to be able to compensate for such slight deformations, the suction strips 38 and 39 are adjustably held on the clamping frame 37 . They are visually parallel to each other and to the target plane of the clamping frame 37 adjustable and must be adjustable with respect to we at least two spatial directions for this purpose. In addition, the flat sides of the two sowing strips 38 , 39 which are decisive for the film layer must be able to be adjusted in alignment with one another; it must also be able to einju to a certain extent the circumferential position. This type of multiple adjustability of the clamping frame suction strips 38 , 39 is not shown in the drawings. If major damage to the stenter 37 - regardless of the type or cause - occur, the entire stenter 37 must be replaced quickly, so that there are no long production interruptions. All mechanical connections between the tenter 37 and the robot arm 36 and all lines must therefore be quickly separated and closed again. Of course, for such a damage or repair, an orderly stenter 37 with all accessories must be laid out in the access area of stenter robot 35 .

So that at the end of the transfer phase of the film blank 44 from the stenter 37 to the - curved - body surface the mechanical tension in the film 23 is not too great and the risk of a film tear along the tear lines is avoided, the film edge slides out of the edge holder of the film 23 provided. This is realized in the suction strips 38 and 39 by a stepped reduction in the adhesive negative pressure. Namely, the suction chambers of the suction strips 38 , 39 are only partially ventilated via a bypass line that can be controlled in time, but remain connected to the vacuum source, so that outside air is sniffed in and a vacuum value with reduced adhesive effect in the suction strip 38 , 39 is established . By appropriate dimensioning of the bypass cross-section, the adhesive effect in the transfer phase of the film 23 can be influenced in such a way that the film edge slides down from the suction strip 38 , 39 while the film tension is still tolerable.

The approximately centrally of and above the body 1 is arranged in the Beklebestationen 12 and 13 with their working space perfora tions robots 50, 50 'carry at their working arm 51, a perfo rationswerkzeug, with the tear lines 45, 45', 45 '' is in the tens of the stenter frame robot 35 to be held blank cut 44 to be perforated. For this purpose, the perforation tool has at least one circular, freely rotatable toothed disk 55 , which is toothed on the outer circumference, made of metal, preferably made of a corrosion-resistant steel, with a thickness of approximately 1 to 2 mm. The toothed disk 55 protrudes only with its toothed outer circumference between thermally insulated skids 56 which slide along it when the film cut 44 is perforated and limit the depth of penetration T of the toothed disk 55 into the protective film 23 . In übri gene region, the serrated disc 55 is surrounded tool with little axial clearance of heat-conducting and aufgeheiztem material of the perforation, so that can be transmitted over these zones heat energy in the serrated disc 55th In the kenscheibe Zac behind the region lying in the perforating a heater is arranged in the form of a heating cartridge for controlled temperature heating of the serrated disc 55 exact 57th For example, the toothed disk 55 should be heated to a constant temperature in the range from 120 to 180 ° C. with a temperature fluctuation of ± 2 degrees. The optimal height of the toothed washer temperature depends on the film 23 - material, film thickness - and on the working speed and has to be empirically optimized in some cases. The perforation tool is in the embodiment of FIGS . 10 and 11 as a tandem tool with two parallel jagged ben 55 formed ben 55 formed. Two equidistant tear lines 45 , 45 'can thus be placed in the protective film 23 at the same time.

Fig. 13 shows a multi-tool as a perforation tool with a mono-perforation 53 and a perforation tandem 52nd The tools 52 and 53 can be brought into the operative position alternatively and alternatively, so that either a single tear line 45 '' or two equidistant tear lines 45 , 45 'can be placed in the protective film 23 . The mono-perforation tool 53 can be advanced by means of a lifting cylinder in front of the tandem tool 52 , so that it is effective in this position indicated by dash-dotted lines. The tandem tool 52 is operative in the retracted position shown in full lines.

It is even advisable already in the tandem-perforation tool 52 of FIGS. 11 and 12, one of the two serrated discs 55 along the lines of Fig. 13 between two Endpo sitions to store displaceable, wherein in one end position both sprockets 55 and the The associated skids 56 are the same and the toothed wheels 55 are offset in height in the other end position. In the setting with positionally identical toothed wheels 55 , two equidistant tear lines can be drawn, whereas, when the toothed wheels are set at different heights, only the exposed toothed wheel becomes effective; Mono tear lines can be laid in this setting. The advantage of such a perforation tool is not only a reduced construction effort, but above all in a compact design, which is particularly important when perforating the cut-out within a clamping frame 37 film blanks 44 is particularly important.

Thus, the distance of the tear lines 45, 45 which-perforating tool 52 can be adjusted ', 45' 'the part of the Tan, it is expedient if the support kenscheiben at least one of the two Zac 55 is fixed in different distance layers to the other serrated disc 55 in tandem tool 52 . This can e.g. B. done by shims or by screwing using elongated holes.

Due to frequent and not insignificant temperature swans of the heated perforation tool - heating at Ar start of work, cooling down during work breaks - exists the risk of screw connections on this tool becoming loose and this leads to interference. Therefore the screw connections either stable in temperature in the area of the perforation tool executed and secured against thermal loosening or the workpiece division and the screw connections - as far as this is constructively possible - in one area be shifted, in which a heating of the perforation stuff does not occur.  

In order to be able to continue working quickly in the event of any damage to a perforation tool, the connections of the tool 52 to the robot arm 51 are simple and are optimized with regard to rapid detachability and mountability. The same also applies to the line connections to the tools, which are designed as plug connections. Of course, at least one intact perforation tool must be readily available for each perforation robot 50 , 50 '.

Since the Perforationsroboter 50, but also the cutting-open executes rotations 80 spatially complicated movements and strong arm and hand, are leading to the robot tools lines highly stressed. In order to minimize the risk of a line defect, it is expedient to provide rotary transmitters for the individual lines at the articulation points, the axes of which are parallel or concentric to the respective axes of the robot arm 51 .

For reliable perforation of the film 23 , the formation of the toothed circumference of the toothed disk 55 of the perforation tool is important. Namely, several teeth 58 of about 3 to 8 mm circumferential extent are attached to the circumference of the toothed disk, which are spaced apart from one another by deeply cut tooth gaps 59 . The tooth gaps 59 jump back behind the skids 56 of the tool. As a result, only the teeth 58 are perforated in the protective film 23 . At the front and rear end of each tooth 58 of the toothed disk 55 , a pointed mandrel 60 of at least about 2 mm radial extension is formed, and the tooth back between the two mandrels 60 of a tooth is provided with an edge-like sharpening 61 . The width Z of the tooth gaps 59 on the circumference of the toothed disk 55 at the height of the skids 56 is approximately 1 to 3 mm. This measure determines the length of the remaining cross sections in the perforated film 23 . In some cases, this measure must also be optimized through trials. On the one hand, the remaining cross sections after perforating must not be too small, so that the perforated film 23 can still be processed safely, ie can be further perforated and can also be handled safely. Ande hand, the residual cross-sections should be small enough so that the assembly due to remove pieces of film along the tear lines 45 to demolish also reliable without dissolves or at tearing the remaining film 23 of the body 1 tear.

For perforating self-contained contour lines of small dimensions, e.g. B. small circles, rectangles or the like can also kro nenike shaped, also heatable perforation stamp can be used. The spiked ring is expediently shaped Lich Lich as the toothed disk 55th The serrated rim is at least on the outside surrounded by a stop ring that remains cold, which is set back by a certain amount in relation to the tips of the serrations and limits the depth of immersion of the serrated rim in the film 23 , that is to say defines the degree of perforation. Applications for such smaller, self-contained contour lines are cutouts for smaller accessories such as antennas, wash water nozzles, door handles, company emblems or the like.

In the pressing station 14 attached to the gluing stations 12 and 13 and a safety intermediate intermediate empty station 15 , the perforated and loose but folds freely applied to the body 1 foil blanks 44 are pressed together onto the surface parts, which improves their adhesion. For this purpose, in the pressing station 14 in the longitudinal direction to the vehicle body 1 on a Bo denführung 76 displaceable and provided with a corresponding to drive portal 65 is provided, which spans the vehicle body rie 1 . Within the opening of the portal 65 he stretches horizontally an elastic and slidable screed 67 across the entire width of the vehicle, which is roughly adapted in shape to the cross-sectional contour of the surface areas to be glued. For contour adjustment, the scraper bar 67 is composed of a straight, central bar section 68 and of two mirror-image inclined side bar sections 69 and 69 '. The scraper bar 67 is in a vertical guide 66 Verkantungssi cher - right against left - up and down movable, while maintaining its set inclination to the longitudinal axis of the vehicle (see Fig. 15). In addition, the portal 65 is operating with a Huban equipped for Steichleiste 67, with the coating strip 67 lifted and carefully to the body 1 abge can be lowered. In the lowered to the body 1 To stand the screed 67 at any height with a defined force loosely on the vehicle body 1 and thus presses the films 23 to the body 1 . This pressing force results from the gravity of the dead weight of the scraper bar 67 and any additional weights accommodated in the vertical guide. The coating bar 67 can casually to follow when traveling along the Portales 65 on the body 1 of the longitudinal contour of the body. 1

In the illustrated embodiment, the supporting part of the scraper bar 67 is formed by an angle profile 70 , to which a rigid felt strip of approximately 15 mm in thickness and approximately 20 cm in width is screwed. A plastic strip 74 made of a fiber-reinforced elastic plastic is inserted between the angle profile 70 and the felt strip 73 to stiffen the felt, the exposed side of the plastic strip 74 being toothed like a comb through a plurality of closely adjacent incisions 75 and thus being reduced in its compliance on the exposed edge . In addition, the scraper bar 67 can also twist more easily in space and thus adapt to different body-side contours more easily.

To press the protective film 23 , the portal 65 begins at the front, indicated by dash-dotted lines in FIG. 2, starting position. There, the scraper bar 67 is lowered at the front onto the body 1 , and the portal 65 travels in the longitudinal direction to the rear with a weighted screed bar 67 , which rests loosely on the body 1, over the fixed body 1 and thus presses on the loosely applied protective film 23 . When the end of the hood 3 has been reached, the portal 65 raises the moldings 67 to the roof level and carefully lowers them again at the beginning of the roof 5 ; pressing continues on the roof foil. At the transition from the roof 5 to the boot lid 4 , the scraper bar 67 is again carefully implemented and the pressing process is continued there as well. Towards the end of the trunk lid 4 , the scraper bar is raised completely, and the portal 65 moves back with the screed bar 67 raised to the starting position indicated by dash-dotted lines and waits there with the screed bar 67 raised for the next body 1 .

Following the pressing station 14 , a Aufschneidestati on 16 is provided, in which taped joints 6 can be cut out automatically to movable parts of the body. In this station 16 , another freely programmable industrial robot - slicing robot 80 - with six degrees of freedom for the robot arm 81 and a further, seventh movement axis for moving the slicing robot 80 along the floor guide 89 is arranged. Not only because of the measurement task, but also because of the front and rear of the body 1 be sensitive, glued joints 6 , where the film 23 has to be cut, the slicing robot 80 is equipped with the travel axis 89 called GE.

At the working arm 81, a pivotable into various working positions dual die 82/83 is mounted. When transferring the bodies 1 from station to station, the actual position of the bodies 1 diffuses despite a mechanical fixation of the conveyor carriage 11 on the side and longitudinal stops on the station side in a tolerance range which is inadmissibly large for the cutting of the joints 6 . These positional tolerances of the body 1 are still superimposed on certain intrinsic tolerances of the body 1 itself, which are in fact considerably smaller than the positional tolerances, but are not completely negligible when the joints are cut free. Therefore, before the joints 6 of the body 1 are cut free , their exact actual position in relation to the slicing robot 80 must first be determined at a few body points at the front and rear. This measurement of the actual position of the joints 6 can be done by a stationary three-dimensional measuring system.

In the exemplary embodiment shown, this actual position determination of the joints 6 is likewise carried out by the slicing robot 80 itself, which in this case works as a measuring robot. The effective in the egg nen pivot position of the double tool part is accordingly designed as a measuring tool 82 with which the exact actual position of the body 1 or the joints 6 can be detected in relation to the slicing robot 80 . The tool part, which becomes effective in the other pivoting position of the double tool, is designed as a cutting and pressing tool 83 , which has a knife 84 for severing the protective film 23 in the joint area and a rotating brush 87 for pressing the cut edges. The rotating brush 87 can be driven by an electric motor 88 via a speed-reducing angular gear.

The knife 84 is suspended transversely to the cutting and moving direction by means of a leaf spring 85 , so that it may follow the positional deviations of the joint 6 from the robot-provided guide track. On the other hand, so that the knife 84 cannot move to the side to an unacceptable extent, the range of motion is restricted by a pair of stop arms 86 spanning the knife 84 on both sides, the range of motion being able to be predetermined by adjusting screws 92 . When the knife 84 is inserted into the joint 6 , however, a clear position of the knife 84 must be ensured and the freedom of movement must be eliminated. Therefore, the stop arms 86 , which can be pivoted about a pivot axis 91, can be moved together by means of a small pneumatic cylinder 90 which engages with a spreading wedge on the opposite lever and the knife 84 can be clamped between them in a defined position, which happens temporarily during the insertion of the knife 84 into a joint 6 .

Also in connection with the cutting tool 83, it should be mentioned that with a view to efficient work, a quick change of the knives 84 must be possible because these are subject to wear due to the large lengths of film to be cut. Measures to increase the tool life are also expediently used here, such as better knife material, hard coating of the cutting edge or higher wear reserve, for example by using rotatable circular knives. For the sake of completeness in connection with this robot tool it should be mentioned again that it must be replaced quickly in the event of damage and that all connections of a mechanical, electrical or fluidic type must be designed accordingly. Also, the measuring tool 82 alone should be able to be replaced quickly within the double tool 82/83.

With the system described, bodies 1 of different vehicle types in the production mix can be covered with protective films 23 without further ado, if slight additional equipment is provided in the stations for this purpose. Namely, at least in the first workstation an automatically working type recognition must be installed, which drives a data carrier carried with the body 1 and determines the body type from it. For example, this can be done by a barcode label carried on the body 1 and by a barcode reader in the entrance area of the workstation. In principle, other information carriers are also suitable for this. This information can be clocked step by step through the Ar beitslinie with the clocking of the bodies 1 from workstation to workstation. In a suitable manner, the body type located in the station must be fed into the robot controller of each work station. In addition, a program selection for the treatment of the different body types must be kept ready in the robot controls, which can be changed quickly and automatically.

To make the production line more flexible with regard to a production mix, the width of the clamping frames 37 , 37 'and 37 ''need not necessarily be changeable; in this respect, they can be designed for the widest body type. In the case of narrower bodies 1 , the protective film 23 then extends somewhat more into the side wall, which is harmless. If one wants to avoid this, it would when used under differently wide films 23 of different widths checks series 1, the suction strips 27, 38, 39 provided in the edge region with switchable to chambers so that the vacuum to different widths can be effective. In order to be able to operate under different lengths of surface areas with the same clamping frame 37 , the rear squeegee 39 of the clamping frame 37 can expediently be moved into different positions by means of an actuating cylinder, so that different frame lengths can be set.

With notchback limousines, three surface parts are usually to be protected, namely bonnet 3 , roof 5 and boot lid 4 , which can differ in width and / or length for different body types. In combi sedans, the roof is significantly longer, so that this extension is poorly achieved by extending the tenter 37 who can. However, since the trunk lid is no longer required for Combi limousines, if mixed production is also required for Combi limousines, it is advisable to overlap the longer roof of Combi limousines with two film sections - starting from the back to the front - and the Clamping frame 37 for roof and boot lid for the usual notchback limousines to use.

Claims (45)

1. A method for applying self-adhesive protective film ( 23 ) on surface parts ( 3 , 4 , 5 ) of bodies ( 1 ) of passenger cars, the protective film ( 23 ) being provided in the form of at least one supply roll ( 21 ), the roll width ( R) in each case to a side length which is coordinated to protect the surface areas ( 3 , 4 , 5 ), with the following steps:

• - Pulling off a measured piece of film from the supply roll ( 21 ) by means of a rigid inside itself, by a clamping frame men robot ( 35 , 35 ', 35 '') guided clamping frame ( 37 ) and taking over the removed, measured piece of film in the Tensioning frame ( 37 ) while maintaining the inherent tension in the film piece that occurs when pulling off, and then cutting off the tensioned film piece to form a film blank ( 44 ),
• - Introducing tear lines ( 45 , 45 ', 45 '') through a perforation tool ( 52 ) guided by a perforation robot ( 50 , 50 ') into the film blank held in the clamping frame ( 37 ) and defined in relation to the perforation robot ( 50 , 52 ) 44 ),
• - Subsequent to the perforation, lowering the perforated film blank ( 44 ) to the intended upper surface area ( 3 , 4 , 5 ) of the body ( 1 ) by the clamping frame robot ( 35 , 35 ', 35 '') and fold and bubble-free pressing of the film blank ( 44 ).

2. The method of claim 1, wherein

• a) the leading, from the supply roll ( 21 ) outgoing en de ( 26 ) of the protective film ( 23 ) is defined and wrinkle-free held and provided such that the film nende ( 26 ) on the non-adhesive side ( 24 ) is at least be accessible ,
• b) the provided end of the supply side ( 26 ) of the protective film ( 23 ) on its non-adhesive side ( 24 ) by a mechanical in the pulling direction (a) guided first suction bar ( 38 ) of the clamping frame ( 37 ) and the protective film ( 23 ) from one Provision bracket ( 27 ) is released,
• c) a size of a surface section ( 3 , 4 , 5 ) matched, rectangular piece of film of the protective film ( 23 ) is pulled off from the supply roll ( 21 ) and is stretched out while still in a state adhering to the supply,
• d) a at a certain distance from the first squeegee ( 38 ) and with it the clamping frame ( 37 ) forming the second squeegee ( 39 ) on the non-adhesive side ( 24 ) of the stretched protective film ( 23 ) and thereby the peeled gene piece of film the clamping frame ( 37 ) is clamped, and then the new stock-side film end ( 26 ) is taken over on the preparation holder ( 27 ) and the peeled film piece is cut off from the supply to form a film blank ( 44 ),
• e) the tear lines ( 45 , 45 ', 45 '') in the area of the later position of add-on parts by means of a heated serrated washer ( 55 ) guided mechanically along defined contour lines in the film blank ( 44 ) kept freely stretched from the non-adhesive film side ( 24 ) be perforated here,
• f) the blank ( 44 ) stretched out and perforated in the tenter frame ( 37 ) is aligned and lowered onto the associated surface area ( 3 , 4 , 5 ) of the positionally provided body ( 1 ) and placed thereon,
• g) the film blank ( 44 ) is then pressed on by means of a slidable and elastic scraper strip ( 67 ),
• h) the protective film ( 23 ) is cut through in the area of taped joints ( 6 ) and the cut edges are pressed on with a rotating brush ( 87 ),
• i) Protective film parts in the area of attachments along the perforated tear lines ( 45 , 45 ', 45 '') are removed and disposed of, with the remaining protective film ( 23 ) being cut out for installation.

3. The method according to claim 1 or 2, wherein the protective film ( 23 ) is applied to freshly painted bodies ( 1 ), which finally run into the final assembly. 4. The method according to claim 1 or 2, wherein the peeled protective film ( 23 ) is antistatic be before its further processing, ie is freed of any static charge. 5. The method according to claim 1 or 2, wherein regardless of any changes in diameter of the supply roll ( 21 ) or liability fluctuations of the protective film ( 23 ) in the supply roll, the protective film ( 23 ) from the supply roll ( 21 ) is removed with a constant tension. 6. The method according to claim 2, wherein the position-defined and fold-free holding and providing the leading, from the supply roll ( 21 ) outgoing film end ( 26 ) of the protective film ( 23 ) on its non-adhesive side ( 24 ) by means of a switchable and disconnectable, along a holding suction bar ( 27 ) effective negative pressure takes place, at least in some areas a detectable edge strip of protective film ( 23 ) is left overhanging the holding suction bar ( 27 ). 7. The method according to claim 1 or 2, wherein the clamping frame ( 37 , 37 ', 37 '') for unclamping and handling the film blank ( 44 ) by a freely programmable industrial robot ( 35 , 35 ', 35 '') with at least five degrees of freedom the movement is led. 8. The method according to claim 2, wherein the removal of the protective film ( 23 ) from the stationary supply roll ( 21 ) by the robot-guided stenter ( 37 , 37 ', 37 ''), namely by moving the first suction bar ( 38 ) away in parallel Before the supply roll ( 21 ) and the supply bracket ( 27 ). 9. The method according to claim 1 or 2, wherein the cutting off of the removed piece of film from the supply takes place by means of a guided ( 30 ), transverse knife. 10. The method of claim 1 or 2, wherein the perforation of the tear lines ( 45 , 45 ', 45 '') in the freely stretched film blank ( 44 ) by a freely programmable induction robot ( 50 , 50 ') with at least five degrees of freedom Movement takes place. 11. The method according to claim 1 or 2, wherein when a film blank ( 44 ) held in the clamping frame ( 37 , 37 ', 37 '') is applied to the associated surface section ( 3 , 4 , 5 ), the holding force with which the clamping frame ( 37 , 37 ', 37 '') holds the film blank ( 44 ), is reduced in such a way that the held edges of the film blank ( 44 ) slide out of the edge clamping under the increasing tension of the film blank ( 44 ) during application. 12. The method according to claim 2, wherein, in repetition of steps a) to f) with respect to the other parts of the surface ( 3 , 4 , 5 ) to be coated, all of the surface parts ( 3 , 4 , 5 ) of the body ( 1 ) are covered with protective film ( 23 ) in a defined position, and the pressing of the film blanks ( 44 ) only then takes place uniformly for all over-glued surface parts ( 3 , 4 , 5 ) by means of an elastic coating strip ( 67 ) which extends over the entire width of the vehicle. 13. The method according to claim 1 or 2, wherein in bodies of notchback sedans, the protective film ( 23 ) for the hood ( 3 ) and for the boot lid ( 4 ) simultaneously and zeitver sets for film application to the roof ( 5 ) are applied. 14. The method according to claim 1 or 2, wherein protective film ( 23 ) is also applied to the side surfaces of doors. 15. The method according to claim 12, wherein the elastic scraper strip ( 67 ) relative to the body ( 1 ) under approximately constant pressing force in the longitudinal direction is slid over the body ( 1 ). 16. The method according to claim 2, wherein the severing of the protective film ( 23 ) in the area of taped joints ( 6 ) and the pressing of the cut edges by a freely programmable industrial robot ( 80 ) with at least five degrees of freedom of movement. 17. The method according to claim 16, wherein prior to severing the protective film ( 23 ) in the area of taped joints ( 6 ) and pressing the cut edges first the actual position of the joints ( 6 ) of the body ( 1 ) within the working space of the induction robot ( 80 ) measured and the relative position of the joints ( 6 ) to the industrial robot ( 80 ) is fed into the robot controller. 18. The method according to claim 1 or 2, wherein in the area of the fenders and doors projecting film sections on the body rie ( 1 ) are left. 19. The method according to claim 1 or 2, wherein the protective film parts in the area of accessories along the perforated tear lines ( 45 , 45 ', 45 '') are manually removed from the bodies ( 1 ). 20. Device for the automated serial application of self-adhesive protective film ( 23 ) on substantially horizontally extending surface portions ( 3 , 4 , 5 ) of freshly painted, from add-on parts still free bodies ( 1 ) of passenger cars, in particular for carrying out the method according to claim 1, with

• - A roll stand ( 20 , 20 ', 20 '') for a supply roll ( 21 ) of the protective film ( 23 ) in which the leading end ( 26 ) of the protective film ( 23 ) is defined in such a position and wrinkle-free that it can be firmly held and provided that the film end ( 26 ) is at least partially accessible on the non-adhesive side ( 24 ), and in which a device ( 30 ) for cutting off the protective film ( 44 ) that has been removed is provided,
• - A freely programmable stenter robot ( 35 , 35 ', 35 '') with at least five degrees of freedom of movement for each surface section ( 3 , 4 , 5 ) of different sizes, on its working arm ( 36 , 36 ', 36 '') Rectangular clamping frame ( 37 ) which is matched to the size of the surface area ( 3 , 4 , 5 ) to be glued and has suction strips ( 38 , 39 ) arranged on two opposite longitudinal sides for pulling off the protective film ( 23 ) from the supply roll ( 21 ) and is arranged for holding a foil blank ( 44 ) while maintaining the residual stress occurring when the film is pulled off,
• - A freely programmable perforation robot ( 50 , 50 ') with at least five degrees of freedom of movement, at the Ar beitsarm ( 51 ) a perforation tool with a heatable serrated disc ( 55 ) for perforating tear lines ( 45 , 45 ', 45 '') in one by the stenter robot ( 35 , 35 ', 35 '') la defined to the perforation robot ( 50 , 50 ') a stretched film blank ( 44 ) is arranged,
• - A in the longitudinal direction to the body ( 1 ) displaceable, the body ( 1 ) spanning portal ( 65 ), in which an extending over the entire width of the vehicle, the shape of the surface parts to be glued ( 3 , 4 , 5 ) adapted, elastic , slidable scraper strip ( 67 ) is movably guided in the vertical direction, which can be pressed onto the body ( 1 ) with a certain force.

21. The apparatus of claim 20, wherein a freely programmable slicing robot ( 80 ) is provided with at least five degrees of freedom of movement, on the working arm ( 81 ) a cutting and pressing tool ( 83 ) is attached, which a knife ( 84 ) for severing the protective film ( 44 ) in the area of taped joints ( 6 ) and a rotating brush ( 87 ) for pressing the cut edges. 22. The apparatus according to claim 21, wherein the cutting and pressing tool ( 83 ) can be pivoted into different working positions and is combined with a further tool, namely a measuring tool ( 82 ), which in a pivoting position than with the measuring tool ( 82 ) A dual tool that becomes effective for the actual position detection of the exact relative position of the joints ( 6 ) to be cut to the body ( 1 ) within the working space of the slicing robot ( 80 ) and in the other swivel position with the cutting and pressing Tool ( 83 ) is effective. 23. The apparatus of claim 20, wherein the device is in the form of a plurality of work stations (12 to 17) supply line comprising Ferti is formed (10) through which the adherend, mounted on the conveying carriage (11) bodies (1) cyclically hindurchförderbar and in the individual workstations (12 to 17) can be fixed within a certain tolerance range, the individual workstations (12 to 17) to the length of a body (1) plus a one freedom of movement between adjacent vehicle bodies (1) creating spaced to set distance. 24. The device according to claim 20, wherein a roller stand ( 20 , 20 ', 20 '') and a stenter robot ( 35 , 35 ', 35 '') are provided for each surface section ( 3 , 4 , 5 ) to be glued , and wherein in each of such adhesive work stations ( 12 , 13 ) with a stenter robot ( 35 , 35 ', 35 '') a perforation robot ( 50 , 50 ') is also arranged. 25. The apparatus of claim 24, wherein in notchback sedans the roller stand ( 20 ) and stenter robot ( 35 ) for the hood ( 3 ) on the one hand and the reel stand ( 20 ') and stenter robot ( 35 ') for the boot lid ( 4 ) to the other in the same workstation ( 12 ) are arranged. 26. The apparatus of claim 24, wherein the perforation robot ( 50 , 50 ') above the body ( 1 ) in the work station ( 12 , 13 ) are arranged such that their working space extends approximately centrally above the body ( 1 ). 27. The apparatus of claim 20, wherein the vehicle body series ( 1 ) spanning portal ( 65 ) with the stroke-movable led scraper strip ( 67 ) is provided for pressing the glued-on foil cuts ( 44 ) in a separate pressing work station ( 14 ), which is only arranged after the robot-equipped Bekle work stations ( 12 , 13 ). 28. The apparatus of claim 27, wherein at least one empty station ( 15 ) is provided for - due to malfunction - manual work to be carried out between the robotic patched work stations ( 12 , 13 ) and the pressing work station ( 14 ). 29. The apparatus of claim 20, wherein

• - In the roll stand ( 20 ) a suction bar ( 27 ) for position-defined and wrinkle-free holding and providing the front end ( 26 ) of the protective film ( 23 ) is attached, with its perforated suction-effective underside ( 28 ) on the non-adhesive, overhead side ( 24 ) the protective film ( 23 ) attacks,
• - The limiting edge of the suction bar ( 27 ) facing the device ( 30 ) for cutting is contoured in a crenellated manner, the projections ( 29 ) also being perforated on the underside so that the protective film ( 23 ) is securely held right up to the end of the film ( 26 ), but is accessible from the top in the area between the projections ( 29 ),
• - The leading in the pulling direction (a) suction bar ( 38 ) of the tensioning frame ( 37 ) on the long side facing away from the inside of the frame is also contoured such that the projections ( 40 ) of the tensioning frame suction bar ( 38 ) between the gaps of the upright suction bar ( 27th ) can be immersed until they come into contact with the protective film ( 23 ),
• - Only those in the film takeover with the accessible areas of the stand-ready film end ( 26 ) coming into contact end faces ( 41 ) of the projections ge ( 40 ) of the tenter frame squeegee ( 38 ) are perforated with suction and can be subjected to negative pressure.

30. The device according to claim 29, wherein the projections ( 29 ) of the upright suction bar ( 27 ) are narrower (width b) than the projections ( 40 ) of the tenter frame suction bar ( 38 , width B). 31. The device according to claim 20, wherein in the roll stand ( 20 , 20 ', 20 '') an antistatic rail for deriving any static charges of the protective film ( 23 ) is arranged, the protective film ( 23 ) in the region of a freely stretched film touches trums. 32. Apparatus according to claim 20, wherein in the roll stand ( 20 , 20 ', 20 '') a receptacle for at least two supply rolls ( 21 ) is provided, one of which is in use and the other is in readiness, and wherein when complete Ver consumption of the supply roll ( 21 ) in use, the supply roll ( 21 ) held ready is automatically interchangeable with the empty roll. 33. Apparatus according to claim 20, wherein in the reel stand ( 20 , 20 ', 20 '') a protective film ( 23 ) deflecting dancer roller ( 22 ) is arranged, which is slidably mounted in approximately radial direction with respect to the supply roll ( 21 ) and can be pressed against the circumference of the supply roll ( 21 ) with controllable force. 34. Apparatus according to claim 20, wherein the dancer roller ( 22 ) is provided with a braking device. 35. Apparatus according to claim 20, wherein the supply of protective film ( 23 ) wound into a supply roll ( 21 ) is dimensioned approximately for the need for a working layer. 36. Apparatus according to claim 29, wherein the tenter frame suction strip ( 38 ) leading in the pulling direction has pivotable gripping means ( 43 ) for additionally holding the protective film ( 23 , 44 ) on the end face ( 41 ) of the projections ( 40 ) which can be pressurized under prestress ) is provided. 37. Apparatus according to claim 20, wherein the clamping frame suction bars ( 38 , 39 ) are held in the clamping frame ( 37 , 37 ', 37 '') so as to be adjustable with respect to two directions parallel to the plane of the clamping frame. 38. Apparatus according to claim 20, wherein the two opposite clamping frame suction strips ( 38 , 39 ) in the clamping frame ( 37 , 37 ', 37 '') can be changed automatically with respect to their mutual distance. 39. Apparatus according to claim 20, wherein the negative pressure acting on the clamping frame suction strips ( 38 , 39 ) due to a controllable bypass of a holding value securely holding onto the edge of the received film blank ( 44 ) only slides on the edge under the application voltage fixed sliding value can be reduced. 40. Apparatus according to claim 20, wherein the perforation tool ( 52 ) for perforating tear lines ( 45 , 45 ', 45 '') in the stretched film blank ( 44 ) has the following features:

• at least one circular, freely rotatable toothed washer ( 55 ) made of metal with a thickness of approximately 1 to 2 mm is provided on the outer circumference,
• - The serrated washer ( 55 ) protrudes only with its toothed outer circumference between skids ( 56 ) which slide along the perforation of the film blank ( 44 ) and limit the depth of penetration (T) of the serrated disk ( 55 ) in the film cut ( 44 ) ,
• - in the covered region of the serrated disc (55) is within the perforating tool (52) a heating device (57) disc for controlled temperature heating of the exact teeth (55) are arranged.

41. Apparatus according to claim 40, wherein the perforation tool ( 52 ) is designed as a tandem tool with two heated toothed disks ( 55 ) arranged parallel to one another in such a way that at the same time two equidistant tear lines ( 45 , 45 ') can be placed in the film blank ( 44 ) are. 42. Apparatus according to claim 40 or 41, wherein the perforating tool ( 52 ) is designed as a multiple tool with at least two parallel parallel serrated washers ( 55 ), one of which is slidably mounted between two end positions and coupled to a displacement drive, such that that either one toothed washer ( 55 ) in the one end position and two toothed washers ( 55 ) is or are effective in the other end position, so that either an individual tear line ( 45 '') or at the same time two equidistant tear lines ( 45 , 45 ') can be placed in the film blank ( 44 ). 43. The apparatus of claim 40, wherein

• - Arranged on the circumference of the toothed disk ( 55 ) are a number of teeth ( 58 ) of approximately 3 to 8 mm circumferential extent, delimited by tooth gaps ( 59 ) that spring back behind the skids ( 56 ) and that penetrate into the film blank ( 44 ) and perforate.
• - At the front and rear end of each tooth ( 58 ) of the toothed disk ( 55 ), a pointed mandrel ( 60 ) of at least about 2 mm radial extension is formed,
• - The between the two mandrels ( 60 ) of a tooth ( 58 ) be sensitive tooth back ( 59 ) is sharpened like a blade ( 61 ),
• - The width (Z) of the tooth gaps ( 59 ) on the circumference of the toothed washer ( 55 ) at the height of the skids ( 56 ) is about 1 to 3 mm.

44. The apparatus of claim 40, wherein the toothed disc ( 55 ) consists of a corrosion-resistant steel. 45. Apparatus according to claim 40, wherein the toothed disk ( 55 ) can be heated to a constant temperature in the range from 120 to 180 ° C.