DE2801637A1 - METHOD AND DEVICE FOR REPAIRING DAMAGED PANELS - Google Patents

Description

The invention relates to a method for mending damaged panels by producing a repair point regular boundaries into which a prefabricated repair panel adapted to the repair site is inserted and is firmly connected to it by the limits on the one hand and the adjacent edges of the repair panel on the other hand are provided with opposing profiled grooves according to the German federal patent 25 OO 036. The invention also relates to a device by performing this method.

The method that has become known from the main application has proven itself well in practice and is widely used been. Only the holder of the repair plate in the repair point with the aim of opening the slot for filling the Keeping filler as wide as possible everywhere along the boundaries of the repair site turned out to be in the practical implementation of the process as a very time-consuming process step. The adjustment of the Repair plate in the repair area was made as carefully as possible so that the shear forces transmitted The filler is distributed equally as possible at all points of the boundary.

In addition, the use of the casting gauge and the manufacture the laminate layer in coated plastic sheets turned out to be very time-consuming. It must be the corresponding casting gauges are kept ready for the respective repair site. In addition, the casting gauge must in particular be pressed against the plate in a special way when the plate is standing upright, this requires a special one Contraption. Finally, prohibits the use of a

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Gießlehre the simultaneous processing of the two opposing plate surfaces.

The object of the present invention is therefore to improve the method of the type mentioned in the introduction so that the adjustment of the repair plate in the repair site can be made easily and safely and the use a casting gauge is spared.

This object is achieved in that the Edges of the repair plate are guided loosely on the boundaries of the repair point when filling in the filler and the filler is filled into the profile space through at least one opening.

By guiding the edges on the boundaries of the repair area care has been taken to ensure that the profile space along the boundary of the repair point is largely everywhere has the same dimensions. The filler can therefore be distributed largely evenly over the entire provil space, without too much filler collecting at individual points of the profile space, while the filler at other points is so thinly distributed that it cannot safely transmit the shear forces that occur after hardening. Because of these In many cases, the configuration of the profile space is sufficient to arrange a single filling opening for the whole Profile space. In other cases, several filling openings are provided in order to promote the distribution of the filler and to speed up the filling process.

According to a preferred embodiment of the invention in the adjoining areas of the repair plate and the repair site a recess in the depth of a Laminate layer introduced, a laminate layer applied in the area of the recess and its edges and the on the Laminate layer adhering to the edges of the recess is removed down to the surface of the plate or repair plate.

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28Ü1637

In this way, it is possible to provide the repair site very quickly with a layer of laminate that tightly and flush with the surface of the repair site Plate or repair plate connects. Because the filling of the groove and the production of the laminate layer in two from each other takes place in separate operations, the use of a very time-consuming and not very precise The casting gauge to be used can be dispensed with. Eventually, in this way it becomes possible to do the repair point at the same time to provide a layer of laminate on both sides of the plate. This allows the laminate layer on both sides of the Cure the panel at the same time, significantly reducing the total time it takes to complete the repair.

According to a further preferred embodiment of the invention has a device for performing the method, a cutting tool of small wall thickness for producing the Repair parts and is with one of the ones to be repaired Plate provided with independent free guide. With this cutting tool, a very fine cut can be made to cut out the damaged area. This creates a relatively narrow slot between the edges of the Repair point removed core, which encloses the damaged point and the boundaries of the repair point. This makes it possible to use this core as a template for recording the repair disk. The strenght of the line for marking the repair plate is thereby. dimensioned so that they are the width of when sawing out the core resulting slot corresponds.

Further details of the invention emerge from the following detailed description and the accompanying drawings, in which a preferred embodiment of the invention for example is illustrated.

In the drawings show:

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Figure 1: a cross section through a damaged plate with an inserted cutting edge,

Figure 2: a cross section through a plate with inserted side milling cutter,

FIG. 3: a cross section through a repair point according to the section line I-I in FIG. 4,

FIG. 4: a plan view of a repair point with an inserted repair plate,

FIG. 5: a side view of a repair site with an attached milling machine,

FIG. 6: a plan view of a plate with an in

the side milling cutter used at the repair site,

FIG. 7: a cross section through a repair point on an enlarged scale,

FIG. 8: a plan view of a plate with an inserted repair plate and an attached milling cutter, and FIG

FIG. 9: a cross section along the cutting line

IX-IX in Figure 8 with inlaid laminate layer, attached plane and attached cutting tool.

A plate 1 has broken out irregularly in the area of damage 5. With the aid of a narrow cutting edge 106, a repair point 7 adapted to the formation of the damage is milled out around the damage 5
is large that all breaklines 8 within the
Repair point 7 are.

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This has straight boundaries 9 in accordance with the design of the cutting edge 106, which are in accordance with the Forming the damage 5 extend through the plate 1.

To produce a groove 10, a side milling cutter 11 with outwardly curved cutting edges 12 is now through the Repair point 7 out so that the due to the processing with the cutting edge 106 perpendicular to the plane of the plate 1 extending boundaries 9 are machined in accordance with the cutting edges 12 of the side milling cutter 11. Included care must be taken that the side milling cutter 11 is guided in such a way that the outer point of the cutting edge 12 is approximately in the central plane of the plate 1 runs.

The side cutter 11 is dimensioned so that from him The groove produced is narrower than the thickness of the plate 1 corresponds. In this way it is ensured that even after the side cutter 11 has been used, guide edges 150 in the area of the plate surface 151 or Plate lower surface 152 remain, the edges of which extend perpendicular to the plate surface from those of the Plate surface 151 or plate base 152 adjacent Parts of the rectilinear boundary 9 are formed. For example, the side cutter 11 is semicircular curved cutting edges 12 formed, then the diameter of the cutting edges

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12 formed circle around the thickness of the plate surface 151 or plate lower surface 152 formed guide edges 15o smaller than the thickness of the plate 1.

After the repair parts 7 has been prepared in the manner that it is provided with the groove Io over its entire circumference, a repair plate adapted to the repair point 7 is then made 13 manufactured. This is prepared in a similar way as the repair parts 7, so that its edge 14 with a groove 15, which protrudes into the repair plate 13. Care must be taken that the groove Io of the plate 1 and the Groove 15 of repair plate 13 are as mirror-inverted as possible, so that they can jointly form a profile space 16, the cross section of which has halves that are axially symmetrical to one another, the axis of symmetry in the direction of the rectilinear delimitation 9 runs. However, it is also conceivable to form the profile space 16 with two grooves Io, 15, the cross-sections of which are from one another is different. In any case, it will be considered advantageous to form the two grooves Io, 15 in such a way that the smallest cross section as far as possible in the plate 1 or Repa ^ raturplatte 13 is, while the larger part of the cross section in the direction of the leading edge 15o or the edge

14 extends. In this way, the profile space 16 has in the area the collision of the leading edge 15o with the edge 14 its largest cross-section. For example, the two grooves Io and

15 have a cross-section with a circular arc-shaped boundary, so that together they form a profile space 16, the Cross-section is designed so that its boundaries on the plate surface 151 or plate lower surface 152 to the Upper or lower surface 19, 20 of the repair plate 13 furthest approach. In any case, however, the groove 15 must be made in the repair plate 13 so that on the surface 19 or Lower surface 2o a piece of the edge 14 is retained in a straight line. This edge 14 is acted upon with guide pieces 153 and 154 at Fitting the repair plate 13 in the repair point 7 the guide edges 15o, so that the repair plate 13 in a loose Snug fit in the repair point 7 is performed,

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At at least one filling point 155 in the area of the mutually acting guide edges 15o and guide pieces 153, a hole 156 is provided through which a filler 157 is filled into the profile space 16 in the liquid or plastic state will. This hole 156 is expediently designed as a bore that is introduced into the profile space 16. Appropriately the hole 156 lies in the region of the guidance of the guide pieces 153, 154 on the guide edges 15o. But it is It is also possible to drill the hole from any other point on the plate upper or lower surface 151, 152 or the upper or lower surface 19, 2o to advance into the profile space 16.

Through this hole 156, the filler 157 is in the profile space 16 filled. Care must be taken that the filler 157 covers the entire profile space 16 as uniformly as possible fills. In order to ensure that no voids are formed in the profile space 16, where the filler 157 encases the profile space 16 does not fill sufficiently, for example, several filling points 155 can be located on the circumference of the repair point 7 are provided. In addition, this can be very significant, particularly in the case of fast-curing fillers 157 arrive to press the filler into the Profilxaum 16 with a considerable excess pressure. This overpressure should be all the greater The more viscous the filler 157 is at the time of filling. To apply the filling pressure, a Press 158 are placed on the hole 156, the displaceable piston 159 of which the filler 157 in the direction of the profile space 16 presses out of the press 158. To see that the profile space 16 is completely filled, can be at an outlet hole as far away as possible from the filling point 155 16o the emergence of the filler 157 after the entire profile space 16 has been filled can be observed. If from this Exit bore 16o the filler 157 exits without bubbles, it can be assumed that the profile space is sufficient is filled. In order to prevent the filler 157 emerging from the outlet bore 16o from spreading over substantial parts of the To distribute plate 1 or repair plate 13, a riser funnel can be provided in the area of the outlet bore 16o.

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After the filler 157 has cured, there can be shear forces transferred in the area of the abutting guide edges 150 and guide pieces 153, 154. To be as smooth as possible To obtain surface in the area of the hole 156 or the outlet bore 160, the filler 157 is as possible separated from the surface 152 or 19 while still in the plastic state.

Since the repair plate on the leading edges 150 only very is loosely guided, it cannot be ruled out that the filler 157 may be displaced when the profile space 16 is filled between the leading edges 150 pushes out. In the hardened state, it forms one over the leading edges 150 uplifting breakline that can only be removed with great difficulty. In addition, it binds poorly with a laminate layer that may still be applied to the repair site away. For this reason, it has proven to be expedient to remove the filler from the repair site while it solidifies take off. In this case, parts of the filler 157 can also be drawn out of the profile space 16, which are attached to the the repair site uplifting bead adhere. For this reason, it has proven to be useful to use the repair point masking off at least one side with a film that seals the joint so tightly that the filler 157 can't push out of her. In addition, it is advisable to mask the joint on both sides of the panel, like this that only the filling openings or an optionally provided riser funnel for the entry or exit of the Filler 157 is available. Since the filler 157 escapes from the profile space on both sides of the plate 16 is prevented, it can be assumed that the Profile space 16 is completely filled with filler 157. The masking that is tight against the discharge of the filler 157 the joint is not so airtight that it may become in the profile space 16 under the influence of the incoming filler 157 forming air pockets can escape from it.

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After the profile space 16 has been filled, the filler 157 hardens so quickly that the masking is subsequently removed can be without the filler 157 adhering to it, which under the influence of the filling pressure from the profile space presses outwards against the adhesive film.

Appropriately, the repair plate 13 is after a Template made so that it can be fitted into the repair site 7 as precisely as possible. It turned out to be shown advantageous for the production of the repair point 7 on the one hand and the repair plate 13 on the other hand use the same template. However, it is also possible to produce a coherent section from the repair point 7 cut out, which includes the entire damage 5. The edges of this cutout are then used as a template used for the manufacture of the repair panel. Because when cutting out the cutout a narrow edge Is used, there is only a small difference in size between the cutout on the one hand and the repair site 7 on the other hand. This difference in size is compensated for, for example, by using of the cutout as a template for the production of the repair plate 13, a drawing device is used that the The difference in size between the cutout on the one hand and the repair point 13 on the other hand is taken into account. In addition In many cases, a thick drawing pencil is sufficient, with the cutting device attached to the outer edge of the pen when making the repair panel to be led.

To guide the side milling cutter 11, a guide 166 is provided on a drive 165 of the side milling cutter 11 With the help of the side milling cutter 11, the groove is in the middle of the wall forming the repair site 7 runs. For this purpose, the guide 166 is designed as a disk 167, the plane of which is coplanar to the plane of the Plate 1 runs. This disk 1 has in its center a ötxung 168 through which the side milling cutter 11 in Direction on the plate 1 protrudes.

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The disk 167 is supported on the drive 165 with arms 169, of which, for example, four on the circumference of the disk can be distributed. They open into a holder 170 which is fastened on the drive 165. Supports during milling the disc 167 on the face of the plate 1 facing it. The side milling cutter 11 protrudes so far the opening 168 in the direction of the plate 1 through that the cutting edge 12 exactly in the middle of the plate 1 forming wall thickness runs. Since, depending on the design of the repair point 7, a substantial part of the disk 167 is on the front surface of the plate 1 rests, is with a safe guidance of the side cutter during the entire milling process 11 to be expected in the middle area of the panel thickness.

In addition, the side cutter 11 is also equipped with a second Guide 171 is provided, with the help of which it is guided on the guide edges 150 of the repair point 7. This second Guide 171 can be designed, for example, as a sleeve that is placed on the guide edges 150 during milling rests. The milling cutter 11 rotates in this sleeve, so that a safe guidance of the milling cutter 11 on the guide edges 150 takes place without the rotating cutter shank resting on the guide edges 150 and possibly damaging them. This sleeve can either only be on the drive 165 facing side of the cutting edge 12 may be provided. But it is also possible to use the side milling cutter 11 with a corresponding To provide sleeve on the side of the cutting edge 12 opposite the drive 165. Finally can the second guide 171 is also formed in a different manner which enables the side milling cutter 11 to be supported on the edge of the repair site 7. What matters is only that a constant guide surface acts evenly on this edge. If it is possible, the milling cutter 11 slightly on the edge of the repair site 7 lead, it can slide directly on the guide edges 150 with the cutter shank

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In a plate 1 with a cover layer 175 is after The filler 157 hardens in the region of the repair point 150, a process that runs parallel to the guide edges 150 Well 176 in both plate 1 and repair plate 13 introduced. In the area of this recess 176 the cover layer 175 is removed by a milling cutter 177, so that the carrier material located under the cover layer 175 178 of both the panel 1 and the repair panel 13 is exposed. The recess 176 is attached so that it protrudes halfway onto the plate 1 and half onto the repair plate 13. The width of the recess is 176 dimensioned so that a laminate layer 179 to be introduced into it can bond well with the carrier material 178.

After the recess 176 has been made, its edges are 180, 181 provided with a separating layer 182, 183, which After the laminate layer 179 has been applied, the edges 180, 181 can easily be detached from the cover layer 175. As a separating layer 182, 183, for example, an adhesive film is used. The laminate layer is then placed in recess 176 179 introduced in several layers until it has reached the height of the cover layer 175 in its central area. Included To achieve a good edge finish, the laminate layer 179 is chosen to be so wide that its lateral Boundary edges on the edges 180, 181 of the recess rests.

While the laminate layer 179 is still hardening, it will with detached from the separating layer 182, 183 with a special knife 185. This remains on top layer 175 for the time being be liable. The special knife 185 used for this purpose has, for example, a disc-shaped cutting edge with an infinite Cutting edge 186-'on. The disc-shaped cutting edge is rotatably mounted in a corresponding holder 187. Only after the laminate layer has completely hardened 179 becomes the separating layer 182, 183 from the cover layer 175 replaced. This creates right next to the

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on the repair site 7 applied laminate layer 179 the reference level to which the repair site 7 after Applying the laminate layer 179 must be leveled.

A plane 188 is preferably used for leveling purposes, which is provided with guides 189 on its lower part facing the plate 1. These 189 guides slide during hobein on the cover layer 175, which is caused by the removal of the separating layer 182, 183 immediately adjacent to the glued-on laminate layer has arisen. A planing knife 190 is provided in the planer 188, the cutting edge of which is 191 is aligned to the level of the guides 189. As the plane 188 moves forward onto its "top layer." 175 acting on guides 189, the cutting edge 186 cuts the laminate layer to the level of those surrounding it Cover layer 175. The planing knife is expediently rotatably mounted in the planer 188 and designed as a cutting roller, their cutting edges 191 from a roller body 192 stick out. The planer 188 is guided on one Handle 193 attached to plane 188. After planing off the existing after inserting the laminate layer 179 The repair site 7 is provided with a covering layer which runs on the same level as the unevenness Cover layer 175 of repair panel 13 or panel 1.

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Claims (24)

Drehtainer Container Technik GmbH & Co. Jaffestrasse 5-7
21o2 Hamburg 93 Method and device for repairing damaged panels Patent claims: f Iy Method for mending damaged panels by creating a repair area with regular boundaries into which a prefabricated repair panel adapted to the repair site is inserted and firmly connected by providing the boundary on the one hand and the adjacent edges of the repair panel with opposing profiled grooves on the other and the profile space formed by the opposing grooves is filled with a filler that transmits shear forces after hardening, characterized in that the edges (14) of the 909829/0320 Telefonlach transmitted · Orders towle telefon! «* Information given requires written confirmation. Postal check account ι Hamburg 8M78-3D0 Repair plate (13) on the boundaries (9) of the repair point (7) when filling the filler (157) are loosely guided and the filler (157) through at least one opening (156) is filled into the profile space (16). 2. The method according to claim 1, characterized in that the Filler (157) through one opening into the profile space (16) Hole is filled. 3. The method according to claim 1 and .2, characterized in that that the profile space (16) is filled through a funnel placed on the opening (156). 4. The method according to claim 1 to 3, characterized in that the boundaries (9) of the repair point (7) before Filling the filler (157) into the profile space (16) with a focus on the repair plate (13) and the plate (1) extending adhesive strips (184) are sealed on at least one plate surface (151). 5. The method according to claim 1 to 4, characterized in that that in the adjacent areas of the repair plate (13) and the plate (1) is provided with a recess (176) in the depth of a laminate layer (179), a laminate layer (179) in the area of the recess (176) and its edges (180, 181) and the laminate layer (179) adhering to the edges (180, 181) of the recess (176) except for the Surface of the plate (1) or repair plate (13) is removed. 6. The method according to claim 1 to 5, characterized in that the edges (180, 181) of the recess (176) before application the laminate layer (179) with a separating layer which facilitates the removal of the superfluous laminate layer (179) (182, 183). 7. The method according to claim 1 to 6, characterized in that that on the edges (180, 181) of the recess (176) as a separating layer (182, 183) a foil tape is applied. 909829/0320 8. The method according to claim 1 to 7, characterized in that the hardening laminate layer (179) prior to detachment the separating layer provided on the edges (180, 181) (182, 183) is removed from this. 9. The method according to claim 1 to 8, characterized in that the repair point (7) according to the respective Damage point (5) produced and the repair plate (13) is adapted to the shape of the repair point (7). 10. The method according to claim 1 to 9, characterized in that the repair plate (13) and the repair point (7) can be made using the same template. 11. The method according to claim 1 to 9, characterized in that for the production of the repair point (7) a contiguous Cutout from the defective plate (1) is removed and the cutout is used as a template for the repair plate (13) is used. 12. The method according to claim 1 to 11, characterized in that that a thin cut is made to cut out the repair site (7) and the repair plate (13) is made with an oversize taking into account this thickness. 13. Apparatus for performing the method according to claim 1 to 12, characterized in that it is a cutting tool has a small wall thickness for the production of the repair point (7) and with one of the plate to be repaired (1) independent free guidance is provided. 14. Apparatus for performing the method according to claim 1 to 12, characterized in that it is designed as a milling cutter guided in the repair point (7), the milling cutter (11) of which has a shape corresponding to the groove to be produced. 909829/0 320 15. Apparatus according to claim 14, characterized in that the milling cutter (11) has a first guide (166) that takes into account the wall thickness of the plate (1) for the production of the Grooves in the middle of the panel thickness and a second one that takes into account the outline of the repair site (7) Has guide (171). 16. The device according to claim 14 and 15, characterized in that that the first guide (166) as one the disk surface (151) acting on the guide surface is formed on which the milling cutter (11) with a half plate thickness corresponding Length protrudes. 17. The device according to claim 14 to 16, characterized in that that the first guide (166) is designed as a guide surface surrounding the milling cutter (11) on all sides, which on the one hand is acted upon by the surface (151) of the plate (1) and is supported on the milling cutter. 18. The device according to claim 14 to 17, characterized in that that the second guide (171) as one on the boundaries (9) the repair point (7) sliding support is formed. 19. Apparatus according to claim 14 to 18, characterized in that part of the shaft carrying the milling cutter (11) is the second Guide (171) is formed. 20. Apparatus according to claim 14 to 19, characterized in that that a sleeve is provided as a second guide (171) on the shaft carrying the milling cutter (11). 21. Apparatus for performing the method according to claim 1 to 12, characterized in that a layer of laminate (179) adhering to the edges (180, 181) is removed Plane (188) is provided, which is on the top layer (175) on the one hand the plate (1) and on the other hand the repair plate (13) is guided. 909829/0320 22. Apparatus according to claim 21, characterized in that for supporting the plane (188) on the plate (1) or repair plate (13) guides (189) on the lower part of the plane (188) are provided, which are supported on the edges (180, 181) of the recess (176). 23. The device according to claim 21 and 22, characterized in that the plane (188) has at least one cutting tool, whose cutting edge (191) in its working position with the Lower edge of the guides (189). Runs on the same level. 24. Apparatus for performing the method according to claim 1 to 12, characterized in that for removing the hardening laminate layer (179) of which the edges (180,181) the separating layer (182, 183) covering the recess (176) Knife (185) with an infinite cutting edge (186) is provided. 909829/0320