EP1205284B1 - Blade for a cutting tool - Google Patents

Abstract

The cutter (10) has fixture section (23) for fixture on a cutting tool as well as having a cutter section (24) that runs along a plane (E). There is a support bearing surface (32) on the cutter that runs parallel to the cutter section. The support bearing surface may be mountable relative to the cutter section and be pre-positioned from a bearing element (30). To enable mounting of the bearing element, there may be a hole (34, 46) provided in the bearing element and/or in the cutter. The support bearing surface may have a rotatable roller body (30, 31, 52) as well as a bearing body firmly connected with the cutter. There may be a support mat (30) on the support bearing surface that is made from an elastic material. The cutter section may have a curved end section (36, 54).

Description

The invention relates to a cutting blade for a cutting tool with Oscillation drive for cutting an adhesive layer between a Body of a vehicle, in particular of a motor vehicle, and a Body part, in particular a roof element.

Such a cutting blade is not known. A cutting knife for Cutting through the adhesive layer of a glued-on pane is described in EP 0174 427 A1 described. Here a support stop made of soft material is provided, which is associated with a surface of the knife blade. This support stop forms a depth stop, which determines the cutting depth of the cutting blade limited during the cutting process. This support stop thus serves only to prevent the tip of the knife from touching the body, namely the window frame, comes into contact. This could otherwise Damage to the window frame or on the knife itself occur.

The disc to be replaced is not a body part, but a supporting or non-supporting element of one another material which is attached to the vehicle body. The Disc is e.g. replaced in case of damage.

In vehicle designs, especially for motor vehicles, is increasingly thought of body parts, such as a car roof or also a fender element, not - as usual - to the body but by means of an adhesive layer, a so-called adhesive bead, to glue. If necessary, a replacement of the body part be desired, with the body undone undamaged body part after carrying out a repair, for example the body, However, to be attached to the body again. For this reason, must during the cutting process for cutting the adhesive layer between this body part and the body the integrity of the of Body be solved to be solved body part.

The invention is based on the object, a cutting blade for a To provide cutting tool, which meets these requirements wearing.

The invention solves this problem with the features of claim 1. Accordingly, a cutting blade for an oscillating drive cutting tool for cutting an adhesive layer between a body of a Vehicle, in particular a motor vehicle, and a body part, in particular a roof element, provided, wherein the cutting blade has a fastening portion for attachment to the cutting tool and a cutting portion comprises, which extends substantially along a plane, wherein a support abutment surface is provided on the cutting blade, which in the substantially parallel to the cutting portion and spaced therefrom is arranged.

The principle of the invention is thus essentially a Provide Stützanschlagfläche that prevents the cutting section emerges from the cutting plane during the cutting process and can injure the body part to be detached.

In the prior art according to EP 0174427 A1 was the danger of a Damage to the disc to be replaced is not given because the surface the vehicle window is so hard that a cutting blade with polished Surface in case of accidental contact with the vehicle window relative can easily slip off the surface. An impression or an intrusion of the knife in the material of the vehicle window is almost impossible. The support stop known in the prior art serves exclusively to limit the depth of cut of the cutting plane to prevent damage to the Body to avoid.

The present invention now also allows a safe and safe, at the same time very simple cutting through an adhesive layer, or Cement bead, between a body part and the body, if that Body part is easily vulnerable, but in no case may be injured.

In passenger cars, it is thought that vehicle roof, so a relatively large area element, in particular for the sake of To save weight as a sandwich construction, for example consisting of two glass fiber mats and arranged centrally between one PUR insulation layer. The entire roof construction is by means of a Kleberaupe on the initially upwardly open body of the motor vehicle glued on, at least one circulating support area according to Art a circumferential flange provides. In addition to the adhesive attachment can still a number of mounting bolts, for example Screw connections, for connection between roof element and body be provided.

The roof inner skin of the roof element is light due to the material vulnerable and especially during a cutting process for severing the adhesive layer is seriously endangered. In the event that the roof inner skin even slightly injured, is the stability of the roof element, which only secured in an intact sandwich construction, no longer guaranteed, so that such a roof element can not be reused. A release of the roof element of the body, for example, necessary be when the bodywork of a motor vehicle after an accident slightly warped, and on a straightening bench back to its original position to be drawn. During the drawing process should then Roof element to be released to facilitate distortion of the body.

With the cutting blade according to the invention ensures that the Cutting or separating process of the adhesive layer exclusively in the plane of Adhesive layer takes place, the cutting section during the cutting process thus remains exclusively in the plane of the adhesive layer. Of the Cutting portion is prevented from the support abutment surface, inadvertently leave the cutting plane and with areas of the cutting section to come in contact with the roof inner surface of the roof element, in the event that is cut from the vehicle interior side or to come in contact with the roof outer skin, in the event that of the Outside of the roof is cut.

In addition to the cutting portion and the attachment portion Of course, the cutting blade may include further sections. In addition, with the cutting blade, for example, a on the Roof element attached bead element to be cut with, which defined Support points for the roof element on the provided by the body Forms bearing surfaces.

The support stop surface serves primarily to support the cutting blade on a body-side surface. But it can also be because of it be thought of with the support stop surface on the body part to be solved support.

The term support stop surface is an area of any size Understood. In principle, this area can also be chosen very small, so that the area becomes almost point-like. It can also be thought of instead of a continuous, i. continuous support stop surface one Number, for example, to provide a plurality of support points, the in their entirety form a support abutment surface or whereby each support point in each case forms its own small Stützanschlagfläche.

The Stützanschlagfläche itself can have a relatively large area Area extending substantially parallel to the cutting portion. It However, it can also be provided, the support stop surface as a relative small-area portion of the outer surface, for example, a stop element form, with this outer surface as a whole in particular may be spherical and depending on the relative spatial location of the Stop element to the cutting portion a plurality of Stützanschlagflächen is available.

From EP-A-0294617 is a cutting tool for cutting through elastic adhesive beads on vehicle windows known. The Cutting tool has an angled blade part, which two comprising abutting blade legs. The cutting knife includes no cutting portion extending substantially along a plane extends.

From EP-A-0532913 is a cutting knife with an adjustable Stop known, which is arranged on the cutting part. The cutting knife does not extend substantially along a plane Cutting section with a substantially parallel to the Cutting section and arranged by this distanced Support abutment surface.

According to an advantageous embodiment of the invention, the support stop surface displaceable relative to the cutting portion. In this way can be variable, depending on the vehicle type or in adaptation to specific body areas or certain body parts, such as fenders, an adjustment the Stützanschlagfläche be achieved in a simple manner.

It may also be thought of releasably attaching the support abutment surface to arrange the cutting blade, so that a slight replacement of the support stop surface becomes possible.

According to a particularly advantageous embodiment of the invention is the support stop surface provided by a stop element. This offers the possibility of a particularly simple construction of the invention Cutting knife. The stop element is advantageously made of plastic, possibly also of soft elastic material. Especially an abrasion-resistant plastic, such as Teflon, is suitable. For special stop elements also come plastics with properties such as nylon or metals such as brass or copper as well coated materials, e.g. Teflon-coated steel into consideration, wherein the smooth surface of the stop element ensures that no scratch marks occur.

According to a further advantageous embodiment of the invention that is Stop element displaced. This allows a particularly simple adjustment the support stop surface, for example, a slot in the Stop element or may be provided in the cutting blade, which for example, is penetrated by a fastening bolt.

According to a further advantageous embodiment of the invention is the Support stop surface arranged in a rotatable roller body. This training allows a particularly simple guidance of the cutting blade during the cutting process, for example, along a circumferential Adhesive sheet.

According to a further advantageous embodiment of the invention is the Support stop surface on a rotatably connected to the cutting blade Arranged stop body. This allows a particularly simple training the stopper body and attachment of the stopper body on the Cutting knife, for example by gluing, bolt fastening, etc.

According to a particularly advantageous embodiment of the invention is formed the Stützanschlagfläche of a support mat. This training has the advantage that the support mat in its geometric shape to that of the Cutting knife can easily adjust. This allows u.a. a particularly simple attachment of the support stop surface on the cutting blade.

According to a further advantageous embodiment of the invention has the cutting portion has a widened end portion. This training allows a cut through the adhesive layer even in an area where Mounting bolts between body parts and body arranged are. These so-called earthing bolts can, for example, center in the adhesive layer are located. The widened end portion of the cutting portion allows behind this fastening bolts and on this Free cutting or cutting through the adhesive layer also in an area that - when viewed in the sectional plane along the Longitudinal direction of the cutting section - lies behind the fastening bolts.

The widened end region may, for example, hammer-like or im be significantly widened T-shaped. However, it can also be an easy one Curved portion may be provided, which also also angled Including arrangement. In the simplest case, the cutting section is in the Cutting plane curved in its entirety arcuate. The essentially T-shaped design of the end allows a particularly simple Cut free the adhesive layer behind the fixing bolts of both Pages of the fastening bolt ago.

According to a further advantageous embodiment of the invention that is Cutting knife formed substantially L-shaped, with an L-leg from the cutting portion and an L-leg from the attachment portion is formed. This allows for providing a Stützanschlagfläche a particularly simple design of the cutting blade itself.

According to a further advantageous embodiment of the invention has the cutting blade has a substantially U-shaped area. These Training allows in particular a release of the body part of the Body from the outside of the vehicle. On the other hand, however Also a special design of the cutting blade possible, the one special attachment of the support stop surface to sections in the area of the Bottom of the substantially U-shaped area or in the region of a side leg the substantially U-shaped area makes possible.

According to a further advantageous embodiment of the invention is a Side legs of the U-shaped area formed by the cutting portion and the other side leg formed by a separate element. This training makes it possible to rely essentially on already known conventional elements for forming an inventive Cutting knife can be used.

According to a further particularly advantageous embodiment of the invention a second abutment surface is provided which intersects the plane. This design has the advantage that in addition to the prevention of leakage the cutting portion from the cutting plane through the support stop surface now additionally a depth stop to limit the Cutting movement is provided in the cutting plane.

Fig. 1

in schematischer Draufsicht ein Dachelement eines PKW sowie den das Dachelement umgebenden Karosseriebereich,

Fig. 2

in schematischer Unteransicht einen Bereich zwischen Dachelement und Karosserie gemäß Ausschnittskreis II in Fig. 1 mit eingesetztem Schneidmesser,

Fig. 3

einen Schnitt durch den Bereich zwischen Dachelement und Karosserie gemäß Schnittlinie III - III in Fig. 2,

Fig. 4

das erfindungsgemäße Schneidmesser gemäß Fig. 3 in perspektivischer Einzeldarstellung,

Fig. 5

eine weitere Schrägansicht des erfindungsgemäßen Schneidmessers gemäß Fig. 4

Fig. 6

eine Seitenansicht des Messers aus Fig. 4,

Fig. 7

eine Draufsicht gemäß Ansichtspfeil VII auf das Messer gemäß Fig. 6,

die Fig. 8 bis 13

ein zweites Ausführungsbeispiel des erfindungsgemäßen Schneidmessers in Darstellungen, die den Darstellungen gemäß Fig. 2 bis 7 entsprechen,

die Fig. 14 bis 19

ein drittes Ausführungsbeispiel des erfindungsgemäßen Schneidmessers in Darstellungen, die den Darstellungen der Fig. 2 bis 7 entsprechen,

die Fig. 20 bis 25

ein viertes Ausführungsbeispiel des erfindungsgmäßen Schneidmessers in Darstellungen, die den Darstellungen gemäß Fig. 2 bis 7 entsprechen,

die Fig. 26 bis 31

ein fünftes Ausführungsbeispiel des erfindungsgemäßen Schneidmessers in Darstellungen, die den Darstellungen gemäß Fig. 2 bis 7 entsprechen,

die Fig. 32

in schematischer Unteransicht gemäß Fig. 2 einen Bereich zwischen Dachelement und Karosserie mit angeordnetem Befestigungsbolzen gemäß Ausschnittskreis XXXII in Fig. 1,

die Fig. 33 bis 37

ein sechstes Ausführungsbeispiel des erfindungsgemäßen Schneidmessers gemäß Fig. 32 in Darstellungen, die den Darstellungen der Fig. 3 bis 7 entsprechen, wobei die Fig. 36a eine zusätzliche Ansicht gemäß Ansichtspfeil XXXVI a in Fig. 33 zeigt,

die Fig. 38

einen Randbereich zwischen Dachelement und Karosserie gemäß Ausschnittskreis XXXVIII in Fig. 1, wobei hier das Dachelement von der Außenseite des Fahrzeugs her gelöst werden soll, und

die Fig. 39 bis 43

Darstellungen des siebten Ausführungsbeispiels des Schneidmessers gemäß Fig. 38, die den Darstellungen der Fig. 3 bis 7 entsprechen.

Further advantages of the invention will become apparent from the non-cited subclaims and with reference to the following description of several illustrated in the drawings embodiments. Show:

Fig. 1

a schematic plan view of a roof element of a car and the body surrounding the roof panel,

Fig. 2

in a schematic bottom view of an area between the roof element and the body according to section circle II in Figure 1 with inserted cutting blade.

Fig. 3

a section through the area between the roof element and the body according to section line III - III in Fig. 2,

Fig. 4

the cutting blade according to the invention according to FIG. 3 in a perspective individual representation,

Fig. 5

a further oblique view of the cutting blade according to the invention shown in FIG. 4th

Fig. 6

a side view of the knife of FIG. 4,

Fig. 7

a top view according to view arrow VII on the knife of FIG. 6,

FIGS. 8 to 13

A second embodiment of the cutting blade according to the invention in representations corresponding to the representations according to FIGS. 2 to 7,

FIGS. 14 to 19

A third embodiment of the cutting blade according to the invention in representations corresponding to the representations of FIGS. 2 to 7,

FIGS. 20 to 25

4 shows a fourth exemplary embodiment of the cutting blade according to the invention in illustrations corresponding to the representations according to FIGS. 2 to 7,

FIGS. 26 to 31

A fifth embodiment of the cutting blade according to the invention in representations corresponding to the representations according to FIGS. 2 to 7,

Figs. 32

2 shows a schematic bottom view according to FIG. 2 of an area between the roof element and the body with the fastening bolt arranged according to the detail circle XXXII in FIG. 1, FIG.

FIGS. 33 to 37

32 in representations which correspond to the representations of FIGS. 3 to 7, wherein FIG. 36a shows an additional view according to the view arrow XXXVI a in FIG. 33, FIG.

Figs. 38

an edge region between the roof element and the body according to section circle XXXVIII in Fig. 1, in which case the roof element is to be released from the outside of the vehicle, and

FIGS. 39 to 43

Representations of the seventh embodiment of the cutting blade according to FIG. 38, which correspond to the representations of FIGS. 3 to 7.

The cutting blade is in the figures throughout with the reference numerals 10 denotes. Same or identical, but also comparable parts or elements of the embodiments illustrated in the figures are the For the sake of clarity, the same reference numbers have been used.

Fig. 1 shows a plan view of a roof element 11 of a motor vehicle. The Roof element is formed substantially rectangular and is characterized by its encircling edge 12 limited. With its edge portions 13 is the Roof element on contact areas 14 of a motor vehicle body 15. Before the Attachment of the roof element 11 to the body 15 forms the body 15 in plan view of the vehicle an open opening, by a circumferential edge 16 is limited.

Not shown in Fig. 1, for example, lying in the direction of travel F. Bonnet, which is a viewer of Fig. 1 below the roof element 11 must present, and accordingly a trunk of a typical Motor vehicle, the viewer of Fig. 1 imagine above the roof element 11 got to.

The roof element 11 is connected to the body 15 via an adhesive layer 17 connected, which is also known as adhesive bead. The adhesive layer 17 is in the illustration of FIG. 1 at least on one side of a dashed line Line, partially bounded by two dashed lines and crosshatched shown. The adhesive layer 17 is thus located between the edge portions 13 of the roof element 11 and the bearing areas 14 of the body 15th

Fig. 1 shows a total of four different adhesive sheets 17, with respect to Fig. 1 horizontally, ie substantially transverse to the direction of travel F. The two inner adhesive strips 17, which are thus arranged centrally with respect to FIG are, are between inner portions 18 of the roof element 11 and corresponding support portions 19 of the body 15 are arranged. The with respect to FIG. 1, both outer horizontal adhesive strips 17, with respect to Fig. 1 are thus shown at the top or bottom, are between edge portions 13 of the roof element 11 and corresponding support areas 14 of the body 15 is arranged. These two so-called outer adhesive sheets 17 are, as will be shown later, but not from the interior of the vehicle, but must be from the outside of the vehicle be attacked.

Fig. 1 shows schematically a total of eight fastening bolts 20, which also be referred to as grounding bolts. By means of these fastening bolts 20, which may be provided in addition to the adhesive layer 17, the Roof element 11, for example screwed against the body 15.

On the roof element 11 are in the edge region in the circumferential direction distributed a plurality of bead elements 21 provided. These bead elements 21 serve a defined edition of the roof element 11 to the corresponding Support areas 14, 19 of the body 15 and provide for a exactly defined distance d between the roof inner surface 22 of the roof element 11 and the bearing surface 14a of the body 15 (Fig. 3). To this Way, the adhesive layer 17 is defined exactly. Basically it is too possible that the bead-like elements 21 are continuous, i. continuous and are arranged circumferentially.

Fig. 2 shows very schematically a view from below, so from the Interior of the vehicle out on the edge region 13 of a roof element 11, the support area 14 of a motor vehicle body 15 and an operating position located cutting blade 10. As can be seen in particular from FIGS. 3 to 7 results, the cutting blade is formed substantially L-shaped and includes a first L-leg, the attachment portion 23 and a second L-leg, which forms the vaginal portion 24. The attachment section 23 is used to determine the cutting blade 10 to a not shown motor-driven or provided with another drive Cutting tool. Fixing is in the mounting portion 23 of the Cutting blade 10 a bore 25 arranged with a polygonal cross-section, the inclusion of a substantially positive fastener the cutting tool is used. By oscillatory drive this not shown fastening element is the entire cutting blade 10 oscillatory driven and performs a reciprocating motion in the substantially along a curved path about the axis of movement 26 (Figure 7). out. The oscillatory movement extends over a very small Angle range.

The cutting portion 24 is, as seen for example in FIG. 3 leaves, substantially perpendicular to the mounting portion 23rd The cutting portion 24 is substantially along a plane E (Fig. 6) arranged. Level E corresponds to cutting blades in operation 10 according to FIG. 3, the plane of the adhesive layer 17, the in Fig. 3 for clarity half omitted.

Although in Fig. 6 shows quite clearly that the cutting portion 24th of the cutting blade 10 is tapered. Essentially, the cutting portion 24, however, arranged along a median plane corresponding to the plane E.

As can be seen in particular from Fig. 3, the roof element 11 a sandwich construction of a first glass fiber mat 27, a second fiberglass mat 29 and an intermediate one PUR (Polyurethane) Insulation Layer 28. The right-hand fiberglass mat relating to FIG 29 thus forms the roof inner skin 22. One-piece cohesive with the roof inner skin 22, the bead member 21 is connected, which has a having substantially trapezoidal cross-section.

The adhesive layer 17, not shown in Fig. 3 is located between the Roof inner skin 22 and the support surface 14a of the body 15 and with respect Fig. 3 below the bead-like element 21. The inventive Cutting knife 10 is used to cut through this adhesive layer 17 to the on To release the body 15 glued roof element 11 of the body 15. When cutting through the adhesive layer 17 should - if available - and the bead-like element 21 are severed with.

The constructed in sandwich roof element 11 is very stiff trained and may be a supporting element of a motor vehicle. In the case, that the inner skin 22 during the Durchtrennvorgangs the adhesive layer 17th is injured by the cutting blade 10, the stability of the entire Roof element 11, however, highly endangered, which is a reuse prevents the detached from the body 15 roof element 11. While the severing of the adhesive layer 17 by the cutting blade 10 must thus be ensured that the cutting blade 10, in particular its Cutting section 24, in no case with the roof inner skin 22 of the roof element 11 comes into contact. For this reason, in the embodiment As shown in FIG. 2 to 7, a stop member 30 is provided which on the Attachment section 23 is attached. This is in the embodiment 2 to 7 as possibly rotatable roller body 31, whose Outer peripheral surface provides a Stützanschlagfläche 32. With his Support stop surface 32 contacts the cutting blade 10 a corresponding Edge portion 33 of the body 15. By conditioning the two surfaces 32, 33 together a movement of the cutting blade 10 in the direction B (FIG. 3), ie towards the roof inner skin 22 of the roof element 11, safely prevented. The distance a between the support abutment surface 32 and the opposite surface 34 of the cutting portion 24 (Figure 6) is so dimensioned that the one body portion 35, that of the Stützanschlagfläche 32 opposite corresponding edge surface 33 provides, in the space between the support abutment surface 32 and the corresponding surface 34 fits on the cutting portion 24. The distance a is thus slightly larger than the thickness s of the body portion 35 (Fig. 3). Of course, the distance a must be chosen so that sufficient Game for the cutting movement of the cutting blade 10 is available in particular to allow a curvilinear oscillation movement.

For cutting through an adhesive layer 17, the cutting portion 24 with its end portion 36 first along the directional arrow R in Fig. 3 in the gap between roof element 11 and body section 35th introduced until a sufficient depth of cut is reached, the end portion 36 the cutting portion 24 has thus reached the edge of the adhesive layer 17, or with reference to FIG. 3 out of the adhesive layer 17 a little down protrudes. Subsequently, the cutting tool is rotating, essentially guided along the edge 12 of the roof element 11 and follows in this way the course of the adhesive sheet 17. The separation process thus takes place continuously substantially along the plane formed by the adhesive layer 17.

The concern of Stützanschlagfläche 32 and the corresponding Edge portion surface 33 of the body 15 provides during the implementation the cutting movement for maintaining the cutting portion 24 within the adhesive layer 17 without the risk that the cutting section 24, the roof inner skin 22 of the roof element 11 contacted and thereby injured.

In the embodiment according to FIGS. 2 to 7, the stop element 30 formed as a rotatable roller 31. This allows for a special simple guidance of the cutting blade 10 in the circumferential direction of the adhesive layer 17 following.

As is apparent in particular from FIGS. 4 to 7, is in the attachment section 23 of the cutting blade 10, a slot 37 is arranged, which of a fastening pin 38 is penetrated. In this way succeeds particularly simple displacement of the stop element 30 relative to the Sheath section 24 and a particularly simple adjustability of Distance a between the Stützanschlagsfläche 32 and the opposite Surface 34 of the cutting portion 24th

FIGS. 8 to 13 show a second embodiment of the invention Cutting knife 10, relating to the first embodiment only differs in terms of the execution of the stop element 30. Here is the stop member 30 also as a rotatable roller body 31 formed, but in a different way to the attachment portion 23 of the cutting blade 10 is attached. The stopper body 30 is seated in this embodiment, on a connecting element 39, which by means of two flange portions 40a, 40b, the attachment portion 23 like a claw embraces. This embodiment allows a particularly simple Assembly and attachment of the stop element 30 on the cutting blade 10th

A third embodiment according to FIGS. 14 to 19 initially looks another basic shape of the cutting blade 10 before. Here is the cutting knife 10 a substantially U-shaped portion 41, which is the end portion 42 of the body section 35 surrounds. The free end region 42 rests thus in the interior of the U-shaped area 41st

Again, the cutting blade 10 includes a mounting portion 23 and a cutting portion 24, with the U-shaped portion 41 between these two sections 23, 24 is arranged, and - at least partially - is formed by these sections 23, 24.

Also in this case, the cutting blade 10 a total of one single piece, which is twice counter-rotating and another The same time bent over.

As a stop element 30 a pad is provided here, which is the Support stop surface 32 provides. The support stop surface 32 is in turn on the corresponding edge surface 33 of the body section 35. A certain, necessary for the cutting movement game can, for example be achieved by the thickness of the relatively soft pad pad 30.

As is apparent from Figs. 15 to 18, the pad mat 30 is relatively long stretched and extends to the bottom of the U-shaped Area 41 into it. Basically, it is possible, with respect to FIG. 15 upper free end of the support mat 30 in such a way that here a second stop surface 43 is formed, which is resting on the free end portion 42 of the body portion 35 is used and in this way the Depth of cut, so limited the cutting movement in the direction R.

When providing a cutting blade 10 with a U-shaped area 41, the length of the bottom of the U-range, so the distance between the two U-side legs are chosen from each other so that the body section 35 of the support portion 14 of the body 15 of the substantially U-shaped area 41 is added. There are now mounting options for the support abutment surface 32 either in the region of Soil or in the region of a side leg of the U-shaped area 41st

Another embodiment according to FIGS. 20 to 25 shows a Cutting knife 10 similar to the first embodiment of FIG. 2 to 7, wherein here a modified stop member 30 in the form of a substantially cuboidal body 44 is provided, which has a rounded Head section 45 includes. The support stop surface 32 is here of the Head section 45 provided. In the cuboid body 44 is a slot 46 angordnet, which of a fixed to the Attached portion 23 of the cutting blade 10 connected Fastening pin 38 is penetrated. This way becomes a special one easy displaceability of the stop element 30 relative to Cutting section 24 is reached, so that the distance a between the Support stop surface 32 and the opposite surface 34 of the Cutting section 24 (Fig. 24) can be set.

A fifth embodiment of the cutting blade according to the invention 10 is shown in FIGS. 26 to 31. Here is the special feature in that the cutting blade 10 composed of two separate elements 47, 48 is. The two elements 47, 48 can be attached to each other, for example, glued to each other. It is also possible, however, the two Elements 47, 48 loosely couple to each other and the relative fixed connection between the two elements 47, 48 only by their common attachment to accomplish the cutting tool, not shown.

The first element 47 is angled twice in opposite directions and comprises a fixing portion 23, a cutting portion 24 and a middle part 49. The second element 48 is formed substantially flat and elongated and also includes a mounting portion 23. Both elements 47, 48 have holes 25 with a polygonal cross section for attachment to Cutting tool, both holes 25 for attachment to Cutting tool are arranged in alignment.

The first and second members 47, 48 are substantially the same formed long, wherein the cutting portion 24 of the first element 47th a support portion 50 of the second element 48 is opposite. The carrier section 50 carries a stop member 30, which is a hemispherical Stop body 51 is formed. The support stop surface 32 corresponds thus the surface of the hemispherical stopper body 51 and is therefore spherically arched.

The peculiarity in this embodiment, inter alia in that the support stop surface 32 with a corresponding surface 33rd comes in contact with the body portion 35, which substantially with the adhesive layer 17 is aligned. The opposite surface 33 is not here at the free end 42 of the body section 35, as in the previous described embodiments was the case. This may if necessary - even with isolated application - special advantages in terms of safety the guidance of the cutting section 24 in the region of the adhesive layer 17 during the cutting process.

In FIGS. 26 and 27, the adhesive layer 17 has been indicated with cross-hatching, representative of the figures of the other embodiments.

The cutting blade 10 according to the embodiment of FIGS. 26 to 31 also has the advantage that in the production of this Cutting knife 10 essentially resorted to known elements can be, with only the hemispherical stopper body 51 on the second element 48 must be attached.

A sixth embodiment of the cutting blade according to the invention 10 is shown in FIGS. 32 to 37. The basic shape of the cutting blade 10 substantially corresponds to that of the first embodiment according to FIGS. 2 to 7, wherein a slightly modified stop element 30 and a modified end portion 36 of the cutting portion 24 is provided are.

The stop element 30 is designed here as a roller-like body 52, with its outer circumferential surface, the support stop surface 32 available provides.

In any event, the roller-like body 52 is rotatable on the attachment portion 23 can be arranged and also what is not in the figures is shown to be relocatable.

As can be seen in particular from FIG. 36 a, the free end region 36 the cutting portion 24 of the cutting blade 10 is substantially T-shaped or widened hammer-shaped. This serves, in the areas 53 of the Adhesive layer 17; in which fastening bolts 20 between the roof element 11th and body 15 are arranged, such areas 53 (Fig. 32) free to cut or cut, the when looking in the direction of R behind the Mounting bolts 20 are. The end portion 36 of the cutting portion 24 has at least one free projecting area 54, in the embodiment according to the figures 32 to 37, two freely projecting portions 54th on, which engage behind the fastening bolts 20 during the cutting process can and the areas 53 of the adhesive layer 17 behind the fastening bolts 20 can reach.

It is essential that the projecting region 54 of the end region 36 the cutting portion 24 from the longitudinal axis L of the cutting portion 24 (Fig. 36 a) is at least slightly curved away. Basically also be thought of, the entire cutting portion 24 curved, that also means, if necessary, at an angle. The embodiment according to Figures 38 to 43 shows an example of such a curved Formation of the cutting portion 24. This embodiment is detailed later.

A substantially T-shaped configuration of the end portion 36 of the Cutting section 24 allows, as shown particularly in FIG. 32 clearly is, the free cutting of the areas 53 of the adhesive layer 17 behind the fastening bolt 20 from both sides. This simplifies the process of Cutting the adhesive layer 17 clearly.

A seventh embodiment of the cutting blade according to the invention 10 is shown in FIGS. 39 to 43. This is a Cutting knife 10, which is a severing of the adhesive layer 17 between Roof element 11 and body 15 from the outside of the vehicle forth allows. This therefore relates to a severing process of an adhesive layer 17 in a region according to section circle XXXVIII in FIG. 1.

The bead element 21 has been omitted in FIG. 39 for the sake of clarity.

As can be seen from Figures 39 to 43, this cutting knife 10 also has a mounting portion 23 and a cutting portion 24th on, between the attachment portion 23 and cutting portion 24 a Middle part 49 is arranged so that a total of a substantially U-shaped Range 41 results. The peculiarity here is that the two Side legs of the U-shaped area 41 are not congruent one above the other lie, but as for example in Fig. 43 results offset from each other are arranged. The cutting area 24 of the cutting blade 10 is a total curved and much narrower than the attachment portion 23rd

As is clear in particular from FIG. 39, the cutting blade 10 engages in this embodiment around the outer edge 12 of the roof element 11 around. The support stop surface 32 rests in this embodiment on the outer surface of the roof element eleventh

At the middle part 49, a stopper body 30 is attached, which in the embodiment is designed as a role. This can, for example, rotatable trained, but also be designed to be displaced.

It is of course possible to describe the different ones Stopper body 30 and of course not described embodiments of stop bodies on cutting blades 10 any basic forms provided. The type of attachment of the stopper body 30 with the Support stop surface 32 on the cutting blade 10 is initially arbitrary. If necessary, a displaceability for adjusting the support stop surface 32 may be provided relative to the cutting portion 24.

Claims (22)

1. Cutting knife (10) for a cutting tool with oscillating drive for severing an adhesive layer (17) between a body (15) of a vehicle, in particular a motor vehicle, and a body part (11), particularly a roof element, wherein said cutting knife (10) comprises a fastening section (23) for fastening to the cutting tool and a knife-edge section (24) which extends substantially along a plane (E), and wherein there is provided on said cutting knife (10) a supporting stop face (32) which is disposed substantially parallel to said knife-edge section (24) and at a distance from the latter.
2. Cutting knife according to claim 1, characterised in that the supporting stop face (32) is displaceable relative to the knife-edge section (24).
3. Cutting knife according to claim 1 or 2, characterised in that the supporting stop face (32) is provided by a stop element (30).
4. Cutting knife according to claim 3, characterised in that the stop element (30) is displaceable.
5. Cutting knife according to claim 4, characterised in that a slot (34, 46) is provided in the stop element (30) or/and in the cutting knife (10) for the purpose of displacing said stop element (30).
6. Cutting knife according to one of the preceding claims, characterised in that the supporting stop face (32) is disposed on a rotatable roller body (30, 31, 52).
7. Cutting knife according to one of claims 1 to 5, characterised in that the supporting stop face (32) is disposed on a stop body (30, 44) which is connected to the cutting knife (10) in a non-rotatable manner.
8. Cutting knife according to claim 7, characterised in that the supporting stop face (32) is formed by a bearing mat (30).
9. Cutting knife according to claim 8, characterised in that the bearing mat (30) consists of a flexible material.
10. Cutting knife according to claim 8 or 9, characterised in that the bearing mat (30) is fastened, in particular bonded, to the cutting knife (10) so as to be incorporated into the material thereof.
11. Cutting knife according to one of the preceding claims, characterised in that the knife-edge section (24) has a curved end section (36, 54).
12. Cutting knife according to claim 11, characterised in that the knife-edge section (24) has a broadened end region (36, 54).
13. Cutting knife according to one of the preceding claims, characterised in that the cutting knife (10) is of substantially L-shaped construction and one leg of the L is formed by the knife-edge section (24), and one leg by the fastening section (23).
14. Cutting knife according to claim 13, characterised in that the supporting stop face (32) is disposed on the fastening section (23).
15. Cutting knife according to one of claims 1 to 12, characterised in that the cutting knife (10) has a substantially U-shaped region (41).
16. Cutting knife according to claim 15, characterised in that one lateral leg of the U-shaped region (41) is formed by the knife-edge section.
17. Cutting knife according to claim 16, characterised in that the other lateral leg is formed by the fastening section (23).
18. Cutting knife according to claim 16, characterised in that the other lateral leg is formed by a separate element (48).
19. Cutting knife according to one of claims 16 to 18, characterised in that the supporting stop face (32) is disposed on the bottom leg (49) of the U-shaped region (41).
20. Cutting knife according to one of claims 16 to 19, characterised in that the supporting stop face (32) is disposed on the fastening section (23).
21. Cutting knife according to claim 18, characterised in that the supporting stop face (32) is disposed on the separate element (48).
22. Cutting knife according to one of the preceding claims, characterised in that a second stop face (43) is provided, which intersects the plane (E).

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