EP0155904A1 - Device for sticking an adhesive tape to the edge of a plate, especially of a metal plate - Google Patents

Abstract

The device comprises a pair of application rollers (1, 2) which rolls an adhesive tape (K) in a U shape around the edge of a sheet metal part (B). The adhesive tape (K) is initially on a carrier tape (T) and is pulled off together with this (TK) from a supply roll by means of transport rollers (6,7). After its separation from the carrier tape (T), the adhesive tape (K) is fed to the pair of application rollers (1, 2) via a free-running pre-folding roller (3) and the carrier tape (T) is removed. The application rollers (1, 2) can be pivoted about axes running parallel to the axes of the application rollers and, at the same time, are arranged together with the folding roller so as to be resiliently movable in the direction of these axes. The pre-folding roll (3) is concave or V-shaped in longitudinal section and is additionally slidable in the direction of the axes of the application rollers by means of softer springs so that it can follow the sheet edge continuously and press the adhesive tape against this edge.

Description

The invention relates to a device according to the preamble of patent claim 1.

In the sheet metal processing industry, the gluing of seam seam connections by means of pressure or thermosetting adhesives is widespread. So it is e.g. It is common in the automotive industry to seal seams on certain body parts, especially doors, in this way and thus to prevent the risk of corrosion.

In the automotive industry and similar branches of industry, adhesives in liquid or pasty form are usually used to produce such glued seam seam connections, which are applied in the form of a bead to the sheet metal parts to be joined. This method of applying the adhesive is unsatisfactory in various ways. On the one hand, the distribution of the adhesive achieved with this is not sufficiently uniform over the entire seam, which can lead to corrosion problems, and on the other hand, adhesives in liquid or pasty form are always problematic from an occupational hygiene point of view.

In the manufacture of cans, as is shown, for example, by US Pat. No. 3,125,056 or FR-A 2 252 147 or BE-A 444 014, it is also customary to glue seam seams or to seal them with adhesive. The adhesive is on the flanged edges of the parts of the can body to be connected to one another are applied either in liquid or pasty form by extrusion or the like or else in the form of a strip of adhesive film.

Adhesives in foils - in particular tape form such as those known under the brand names Araldit ^{* -} and Redux ^{8 -} adhesive film (CIBA-GEIGY) are becoming increasingly popular, not least because of their occupational hygiene advantages. However, such adhesives have so far not been used, or have been used only to a very limited extent, for gluing the seams of, for example, car body parts. The main reason for this is that adhesive films are viscous and their very low tensile strength makes machine application considerably more difficult. Additional complications arise when such adhesive strips have to be applied to body parts, the seams of which have a complicated, in particular spatially curved, course. These difficulties are particularly great if the flanged edge is to be provided with adhesive on both sides, that is to say the adhesive tape has to be placed around the edge in a U-shape.

Most of the previously known devices of the type described in the preamble of claim 1 are only suitable for processing relatively rigid and tensile adhesive tapes (not adhesive tapes). This also applies, for example, to the apparatus with a prefolding channel and pressure rollers known from US Pat. No. 4,155,798.

Recognizing the fact that the inadequate suitability of the known apparatuses for applying tough plastic adhesive tapes with low inherent rigidity and tensile strength to curved sheet metal edges is primarily due to the rigid arrangement of the pre-folding duct and the pressing or application rollers and the fact that the application rollers are free-running ( US Pat. No. 4,155,798), an arrangement has also already been proposed (EP-A 72 779), in which firstly the pair of application rollers can be pivoted as a whole about an axis which is parallel to the roller axes and with respect to the direction of tape transport at a distance from them approximately in symmetry plane of the pre-folding channel, and secondly, in which the application rollers can be driven by means of torsionally elastic shafts.

Although this device represents an abrupt improvement over the known prior art, extensive practical tests have shown that it can still be improved decisively with regard to the application quality, in particular at a higher application speed.

It has been found that the application quality, in particular even at higher application speeds, can be significantly improved further by modifying the movement possibilities of the pair of application rollers. An application device modified and improved in this way is the subject of the priority EP patent application No. 84810079.8 dated February 13, 1984 (Publ. No. 0 117 232; corresponding to US Pat. No. 4,486,261).

To this end, the present invention represents an advantageous alternative solution. Its main features are described in the characterizing part of patent claim 1, preferred further developments result from the dependent claims.

• Fig. 1 eine perspektivische schematische Gesamtdarstellung der wesentlichsten Komponenten des Ausführungsbeispiels,
• Fig. 2 eine Vorderansicht des eigentlichen Applikationskopfes der Vorrichtung nach Fig. 1 gemäss der Linie II-II in Fig. 3, (Blickrichtung -Y in Fig. 1)
• Fig. 3 einen Schnitt längs der Linie III-III der Fig.2, (Blickrichtung -Z in Fig. 1)
• Fig. 4 einen Schnitt längs der Linie IV-IV der Fig. 3,
• Fig. 5 einen Schnitt längs der Linie V-V der Fig. 2 und
• Fig. 6 ein elektrisches Blockschaltschema der Antriebssteuerung der Vorrichtung.

The invention is explained in more detail below with reference to an embodiment shown in the drawing. Show it:

• 1 is an overall perspective schematic representation of the most important components of the exemplary embodiment,
• 2 shows a front view of the actual application head of the device according to FIG. 1 along the line II-II in FIG. 3, (viewing direction -Y in FIG. 1)
• 3 shows a section along the line III-III of FIG. 2, (viewing direction -Z in FIG. 1)
• 4 shows a section along the line IV-IV of FIG. 3,
• Fig. 5 is a section along the line VV of Fig. 2 and
• Fig. 6 is an electrical block diagram of the drive control of the device.

The essential components of the device are, according to FIG. 1, two application rollers 1 and 2, a pre-folding roller 3, a control roller 4, a deflection roller 5, two transport rollers 6 and 7 with two associated counter pressure rollers 8 and 9, a further deflection roller 10, two drive motors 11 and 12 with associated tachogenerators 13 and 14 for application rollers 1 and 2, a drive motor 15 with an associated tachogenerator 16 (FIG. 6) for transport rollers 6, 7, a controller 17 for the three drive motors, a cassette 18 with a supply roll of adhesive tape TK ( Consisting of a carrier tape T and a strip of adhesive film K) carried by this, a receptacle 19 for the removed carrier tape T and two hose lines 20 and 21 for the supply of adhesive tape TK to the transport rollers 6 and 7 or the return line of the removed carrier tape T in the receptacle 19. The hose lines are by means of bayonet couplings 22a, b and 23a, b with the actual application head, which contains all parts except for the cassette 18, the receptacle 19 and the controller 17, releasably connected; the cassette 18 and the receptacle 19 as well as the control 17 are arranged in a fixed position outside the application head and do not follow the movements which are yet to be explained. The application rollers 1 and 2 and the transport rollers 6 and 7 are driven by pulleys 24-30 and associated transmission belts 31-33.

• Das aus Trägerband T und Klebfilm K bestehende Klebband TK gelangt von der Vorratskassette 18 über den Schlauch 20 und über einen nur in Fig.3 ersichtlichen Führungskanal 109 zu dem Transportrollenpaar 6, und 8, wo das Trägerband T vom Klebfilm K abgezogen wird. Der

Klebfilm K wird über die Umlenkrolle 5, die Steuerrolle 4 und die Vorfaltrolle 3 zu den Applikationsrollen 1 und 2 geführt, welche ihn U-förmig um den Rand des damit zu versehenden Blechformteils B herum applizieren. Das abgezogene Trägerand T wird über einen in Fig.3 gezeigten weiteren Führungskanal 110 und den Schlauch 21 mittels einer nicht gezeigten Saugvorrichtung in den Aufnahmebehälter 19 zurückgeführt. Die Querschnitte des Schlauchs 20 und des Führungskanals 109 für das Klebband TK sind oval und die Krümmungen dieser Teile sind so gewählt, dass das Klebband im wesentlichen nur mit seiner (nichtklebrigen) Trägerbandseite (T) aufgleiten kann. Der ovale Querschnitt verhindert eine Verdrehung des Klebbands.The rough functioning of the device is as follows:

• The adhesive tape TK consisting of carrier tape T and adhesive film K passes from the storage cassette 18 via the hose 20 and via a guide channel 109 which can only be seen in FIG. 3 to the pair of transport rollers 6 and 8, where the carrier tape T is pulled off the adhesive film K. The

Adhesive film K is guided over the deflection roller 5, the control roller 4 and the pre-folding roller 3 to the application rollers 1 and 2, which apply it in a U-shape around the edge of the sheet metal part B to be provided with it. The removed carrier edge T is returned to the receiving container 19 via a further guide channel 110 shown in FIG. 3 and the hose 21 by means of a suction device, not shown. The cross sections of the hose 20 and the guide channel 109 for the adhesive tape TK are oval and the curvatures of these parts are selected such that the adhesive tape can only slide on with its (non-sticky) carrier tape side (T). The oval cross-section prevents the adhesive tape from twisting.

The adhesive tape TK is transported via the transport rollers 6 and 7, the tensile forces essentially only acting on the tensile carrier tape T and the sensitive adhesive film K not being loaded. The transport of the unprotected adhesive film K detached from the carrier tape T takes place through the two application rollers 1 and 2, but the required (slight) tape tension is controlled via the control roller 4.

The control roller 4 is arranged on a link 34 which can be pivoted about the axis of the deflection roller 5 and is thereby loaded by means of a tension spring 35, so that the adhesive film K is always slightly tensioned. The size of the basic tension can be adjusted by means of a knurled screw 36 (Fig. 6). The link 34 is coupled to a potentiometer 37 (FIG. 6), so that pivoting the control roller 4 causes the potentiometer 37 to be adjusted accordingly. The potentiometer is connected to the controller 17 and together with it controls the drive motor 15 for the tape transport (tape replenishment) in such a way that the tape tension in the adhesive film K always remains constant regardless of the movements of the individual rolls to be explained. The circumferential speed of the transport roller 7 pulling off the carrier tape T is slightly greater than that of the transport roller 6 in order to compensate for any slippage is preferably designed as a convex double cone; on the one hand a certain preforming of the adhesive film K and on the other hand a centering of the adhesive film is achieved.

The application head is attached to a movement device, not shown, e.g. a robot (known type). This is programmed in such a way that the two application rollers 1 and 2 run precisely over the edge of the sheet metal part and apply the adhesive film K. The specific structure of the application head is shown in FIGS. 2-5, in which coordinate axes X, Y and Z are entered to facilitate understanding, the Z axis being vertical when the robot is at rest. Otherwise the Z axis denotes the current normal to the surface of the sheet metal part B, the Y axis the normal to the sheet edge in the sheet plane and the X axis the tangent to the sheet edge in the (current) sheet plane.

All parts of the application head are mounted on a bracket 50, which is mounted in a housing 51 which is open towards the front and can be resiliently tilted about an axis 52 parallel to the X axis (i Z direction). The housing 51 itself is fastened to the movement device via a flange 53. The bracket 50 carries two Kugelbüchaenzylinder 54 and 55, in which two guide rods 56 and 57 are mounted displaceably in the ± Y direction. A support plate 58 is connected to the guide rods, which, with the exception of the transport and counter-pressure rollers, carries all the remaining parts of the application head and is resiliently supported on the two spherical sleeve cylinders 54 and 55 via two springs 59 and 60.

The two drive motors 11 and 12 with the associated tachometer generators 13 and 14 are mounted on the support plate 58 by means of an angle 61, so they also make the ± Y movement of the support plate. Furthermore, a support element 62 is mounted on the support plate 58, on which the pre-folding roller 3, the control roller 4 with the potentiometer 37 and the deflection roller 5 as well as one from an electromagnet 63 actuated cutting device (scissors) 64 are attached. (For the sake of clarity, this cutting device is not shown in FIG. 2).

2 and 4 show, the concave double-conical folding roll 3 is rotatably mounted in a U-bracket 65. The U-bracket itself is connected to a slide rod 66, which is mounted in the support element 62 so that it can be displaced in the ± Y direction against the force of a spring 67. A guide rod 68 secures the U-bracket 65 against rotation about the Y axis. The pre-folding roller 3 is thus resiliently movable in the Y direction regardless of the movement possibilities of the other parts of the application head, the spring constant of the spring 67 being smaller (ie the spring 67 being softer) than that of the springs 59 and 60, against which the support plate 58 also bears all of their superstructures as a whole are resiliently movable in the Y direction. This independent evasive movement possibility of the pre-folding roller 3 allows an optimal adaptation to the edge of the sheet metal part even with complicated spatial edge courses.

Two essentially triangular guide jaws 69 and 70 are attached to the front of the U-bracket 65. The upper guide jaw 69 is fixedly mounted, the lower jaw 70 can be pivoted about the fastening screw 71 against the force of a leaf spring, not shown, in the direction of arrow 72. These two guide jaws 69 and 70 follow the edge of the sheet metal part B that passes between them during operation and, depending on the curvature of the latter, bring about the aforementioned tilting movement of the bracket 50 about the axis 52 (± Z-tilting movement).

On the support plate 58, two L-shaped bearing levers 73 and 74 are mounted so as to be resiliently pivotable about axes of rotation parallel to the Y axis. One leg 75 and 76 of the two bearing levers 73 and 74 is parallel to the support plate 58 and is pivotally mounted in it, the other leg 77 and 78 extends perpendicularly thereto in the Y direction and serves as a pivot bearing for the shaft 79 and 80 each one of the application rollers 1 and 2. These can therefore be pivoted about the axes of rotation of the bearing levers 73 and 74 designated in FIG. 2 in the sense of a ± Z movement.

The design of the swivel bearings for the two bearing levers is shown in Fig.5. A stop body 84 is rotatably inserted into the support plate 58 via a bearing bush 83. A shaft 86 is rotatably mounted in this via a further bearing bush 85. This shaft 86 carries the bearing lever 74 and is connected to it in a rotationally fixed manner by means of a releasable fastening element 87. A helical spring 88 is seated on the shaft 86, one end of which engages in a slot 89 at the end of the shaft 86 and the other end of which is held in the stop body 84. In the stop body 84, a driver rod 90 is also fastened, which extends through an arch slot (not shown) in the support plate 58 and rests laterally on the bearing lever 74. A stop screw 91 at an angle 61 interacts with the stop body 84 and limits its rotational movement in the direction of the arrow 92.

The basic tension of the coil spring 88 can be adjusted by means of the fastening element 87. Without external force, the bearing lever 74 is in the neutral position shown fully extended in FIG. 2, in which, on the one hand, the bearing lever 74 with the driving rod 90 and, on the other hand, the stop body 84 with the stop screw 91 are engaged or in mutual contact. The neutral position can be adjusted with the stop screw 91. If the lower application roller 2 and thus the bearing lever 74 are now deflected downward, it lifts off the driving rod 90 and the restoring action of the spring 88 sets in. If the external force disappears, the bearing lever 74 moves up again due to the spring action. However, it cannot move beyond the neutral position by itself, since the moment the neutral position is reached, the bearing lever engages with the driving rod 90 and then the spring action ceases immediately.

The resilient pivot bearing for the upper bearing lever 73 is constructed exactly the same, but its effect is mirror-inverted with respect to the top and bottom. In order to ensure that, regardless of the respective deflection upwards or downwards, both application rollers 1 and 2 always rest securely on the edge of the sheet metal part, the two bearing levers 73 and 74 are clamped together by means of a coupling spring 93.

The two bearing levers 73 and 74 are provided with two extensions 94 and 95. With this you can e.g. be spread apart for threading the adhesive film.

A shock roller 96 is freely rotatably mounted on the lower bearing lever 74 (FIGS. 2, 3). This impact roller runs along the edge of the sheet metal part and, depending on the edge profile, effects the evasive movement of the support plate 58 with all of its structures in the ± Y direction.

The two spring-loaded pivot bearings 41 and 42 between housing 51 and bracket 50 are formed analogously to the pivot bearings of the bearing levers 73 and 74. This is shown below using the example of the right-hand rotary bearing in FIG. 3 in conjunction with FIGS. 4 and 5. The same applies to the left pivot bearing, but vice versa with regard to the direction of rotation.

The wall part 97 of the housing corresponds to the bearing lever 74 in Figure 5, the flange 98 of the bracket 50 of the day plate 58. The two turntables 111 and 112 corresponding to the stop body 84, the driving pin 113 the driving rod 90, the stop screw 114 of the stop screw 91 and that Clamping element 115 for the helical spring, not shown, the fastening element 87 in FIG. 5.

The helical spring, not shown, acts between the wall part 97 and the two rotatably connected turntables 111 and 112. The stop screw 114 sits on the flange 98 of the bracket and acts on the driving pin 113 and thus on the two turntables. With it, the neutral position of the bracket can be adjusted with respect to the housing.

When the bracket 50 is deflected downward (tilting movement of the application rollers 1 and 2 in the + Z direction), the driver pin 113 is lifted from the nose 116 of the wall part 97, so that the spring is active and returns the bracket to the neutral position as soon as the deflecting force disappears. When the neutral position is reached, driver pin 113 and nose 116 come into mutual contact and the spring action ceases.

The pivoting spring bearing on the left in FIG. 3 acts analogously, however with regard to deflections of the application rollers upwards. The two pivot bearings complement each other and bring the bracket and thus the application rollers back to the neutral position from every deflection.

3, a bearing block 100 is mounted on the side of the bracket 50, on which the deflection roller 10 and the transport rollers 6 and 7 are mounted. A pivot part 101 is articulated on the bearing block and carries the two counter pressure rollers 8 and 9. This pivoting part is rotatable about the axis of the deflection roller 10 and is held by means of two springs 102 and 103 in the position shown in full extension in FIG. The tension of the spring 103 can be adjusted by means of a knurled screw 104. To thread the adhesive tape TK and the removed carrier tape T, the swivel part 101 can be swiveled into the position shown in broken lines, the nips between the transport rollers and the associated counter-pressure rollers being open.

The two transport rollers 6 and 7 are driven via the transmission belt 33, which, however, in contrast to Fig.l, does not sit directly on the pulley 28 of the drive motor 15, but rather is connected to the latter via one of two further, non-rotatably which pulleys 105 and 106 and another belt 107 existing reduction gear is connected. The drive motor 15 is mounted on a flange 108 of the bracket 50.

On the bearing block 100, the two guide channels 109 and 110 for the adhesive tape TK and the removed carrier tape T are also attached in a manner not shown. These guide channels 109 and 110 extend into the immediate vicinity of the head-side parts 22b and 23b of the bayonet couplings for the hose lines 20 and 21, but are not mechanically connected to them. The parts 22b and 23b are arranged on the upper side of the housing 51 of the application head in the normal position. (The guide channels are not shown in FIG. 1 for the sake of clarity.)

The application rollers 1 and 2 are coated with silicone and interchangeably fastened on their shafts 79 and 80. They are driven with a constant torque that can be set via the control 17 and also a constant, adjustable idling number, i.e. the two drive motors 11 and 12 are - fed back by the tachogenerators 13 and 14 - controlled by the controller 17 in such a way that the application rollers are acted on with a constant torque on the one hand and have a constant idling speed on the other hand. Torque and idle speed can be preselected on two corresponding setting elements 17a and 17b of the control. This type of drive enables optimal adaptation of all roller speeds (application rollers, transport rollers) to the robot's motion speed, including slip compensation, without connection or exchange of information with the controller of the motion device (robot).

According to the description above, the two application rollers 1 and 2 have several possibilities for resilient compensating movements. They are initially each pivoted about the bearing axes 81 and 82 of their bearing levers 73 and 74 parallel to the XZ plane in the i Z direction bar and then jointly displaceable parallel to their axes of rotation (± Y movement) and finally tiltable together about an axis 52 parallel to the X axis.

The pre-folding roll 3, which is made of PTFE (Teflon), makes (essentially) the compensating movements (tilting movement, sliding movement) common to the two application rolls 1 and 2. In addition, it can also spring relative to the rollers 1 and 2 in the Y direction. The pre-folding roll 3, which is pressed resiliently onto the edge of the shaped sheet metal part, primarily fulfills the task of pressing the adhesive film K onto the edge in its immediate folding area, so that there are no cavities or the folded tape sticks together.

The special drive type of the application rollers 1 and 2 and the transport rollers 6 and 7 together with the special movement possibilities of the application rollers and the pre-folding roller or the components carrying them form the prerequisite for a uniform and distortion-free application of the adhesive film K on the sheet metal part B even at high processing speeds and complicated edges.

As mentioned earlier, the application head is equipped with a cutting device in the form of a pair of scissors 64 or a thermal cutter. This cutting device (FIG. 3) is mounted on the support plate 58 or on the support element 62 and, for safety reasons, can be pivoted out of the transport path of the adhesive film about an axis 117 parallel to the Y axis against the force of a spring 118. If the cutting device gets stuck in the swung-out position for any reason, a limit switch ensures that the movement device stops immediately. In general, all spring-loaded compensating movements of application rollers 1 and 2 (± Z pivoting movement with bearing levers, i Z tilting movement and ± Y sliding movement) are monitored by means of limit switches. When the respective extreme positions are exceeded, the movement device is then stopped immediately, so that overloading of the application head is avoided.

For simple sheet metal contours, it is also possible to dispense with the drive of the two application rollers 1 and 2 and to connect only one tachometer generator to one of the two then freely running application rollers, which would then serve as a reference for driving the belt transport motor 15 as before.

Claims (15)

1. Device for U-shaped application of an adhesive tape (K) in the longitudinal direction around the edge of a flat molded part (B), in particular a sheet metal molded part, with a tape guide which has transport rollers (6, 7) and means (3) for pre-folding the adhesive tape, of which the pre-folded adhesive tape (K) runs between two resiliently pressed application rollers (1, 2), by means of which it can be pressed simultaneously onto the two sides of the flat molded part (B) inserted in the tape folding area, characterized in that the two application rollers (1, 2) are arranged such that they can be pivoted out of a neutral position about an axis (81, 82) parallel to the roller axes (79, 80) in such a way that their pivoting movement is essentially in one of their two axes (79, 80) in the neutral position defined level (YZ level). 2. Device according to claim 1, characterized in that the two application rollers (1, 2) are arranged to be resiliently displaceable in the direction of their axes (79, 80). 3. Device according to claim 1 or 2, characterized in that the pre-folding means is designed as a substantially double-conical, tapering towards its center, free-running pre-folding roll (3). 4. Apparatus according to claim 2 and 3, characterized in that the pre-folding roller (3) together with the application rollers (1,2) is arranged to be resiliently displaceable. 5. The device according to claim 4, characterized in that the pre-folding roller (3) is arranged to be resiliently displaceable relative to the application rollers (1, 2) in the direction of its axis, the spring force opposing this movement being less than that of the joint displacement movement of application rollers and preliminary role. 6. Device according to one of claims 1 to 5, characterized in that the pair of application rollers (1, 2) and the pre-folding roller (3) together around a plane defined by the axes (79, 80) of the application rollers (1, 2) (YZ plane) vertical tilt axis (52) are resiliently pivoted. 7. Device according to one of claims 1 to 6, characterized in that the two application rollers (1, 2) are each mounted in a bearing lever (73, 74) which is resiliently rotatable about the roller pivot axes (81, 82) such that the deflection movement of the Application rollers (1,2) opposing spring force for each bearing lever (73,74) only acts against deflections in the direction away from the other application roller, and that the two bearing levers (73,74) are resiliently kinematically coupled, so that the two application rollers (1,2) are pressed resiliently against each other and always move together. 8. Device according to one of claims 1 to 7, characterized in that the two application rollers (1, 2) are each acted upon by a separate drive motor (11, 12) with an adjustable constant torque. 9. The device according to claim 8, characterized in that a controller (17) for regulating the drive motors (11, 12) is provided, by means of which the torque and the idling speed of the motors or the application rollers (1, 2) driven by them. are adjustable. 10. The device according to one of claims 7 to 9, characterized in that the transport rollers (6, 7) are driven by a separate drive motor (15) controlled by the control (17), that the adhesive tape (K) before reaching the Pre-folding means (3) is guided over a preferably convex double-conical control roller (4) which is pivotably mounted against the force of a return spring (35) about an axis (5) parallel to its axis, the deflection of the control roller being dependent on the tension of the Adhesive tape depends, and that the control roller (4) is coupled to an electrical transducer (37) which, in cooperation with the controller (17) controls the drive motor (15) for the transport rollers (6,7) so that the tension in the adhesive tape remains constant. 11. The device according to one of claims 1 to 10, characterized in that the pair of application rollers (1, 2) and the pre-folding means (3) are mounted on a carrier plate (58) which is resiliently movable in the direction of the roller axes (79, 80) a bracket (50) is mounted. 12. The device according to claim 11, characterized in that the bracket (50) in a housing (51) about a plane perpendicular to the plane defined by the axes (79, 80) of the two application rollers (1, 2) (YZ plane) Tilt axis (52) is resiliently tiltable. 13. The apparatus according to claim 10, characterized in that the return spring (35) for adjusting the tension in the adhesive tape (K) is adjustable. 14. Device according to one of claims 1 to 13, characterized in that it has a cutting device (64) for the applied adhesive tape (K). 15. Device according to one of claims 1 to 14, characterized in that all deflection movements of the pair of application rollers (1, 2) are monitored by means of limit switches for exceeding limit values.

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