EP1816097B1 - Devices for preparing a storage roll wound with a web of material for a flying roll change - Google Patents

Abstract

The device has a cutting device that crosses a web of material for cutting the web of material. An adhesive tape dispensing device (14) places an adhesive tape along an edge of the web of material that is produced during the cutting. The dispensing device has a sensor (27) to detect the position of the dispensing device and a web edge sensor (26) to detect the crossing of the edge of the web of material. The adhesive tape dispensing device has clamping fixtures (38, 39) for stretching the web of material in its longitudinal direction.

Description

The invention relates to a device for preparing a supply roll wound from a material web for a flying reel change according to the preamble of claim 1.

It is known per se to prepare a supply roll for a flying roll change by an adhesive tape strip in the transverse direction is attached to the outer end of the wound on the supply roll material web, which adheres on the one hand the outer end to an underlying layer of the web and so an uncontrolled unwinding prevents the web when it is accelerated during the roll change on the running speed of the web to replace it, and, as soon as the peripheral speed of the supply roll has reached the speed of the material to be replaced, can be pressed against them, so as the outer end to tack the material web wound on the supply roll to the material web to be replaced and to pull it along with it.

The WO 03/057605 A1 discloses a device for preparing a flying reel change, in which a device for applying adhesive tape is controlled by means of a sensor of the edge of the supply roll.

The EP 0 640 545 A1 describes a device for applying adhesive tape to a supply roll, in which the pressure roller of the adhesive tape is driven by means of a motor.

By the DE 101 39 563 A1 , the DE 696 16 892 T2 and the EP 771 300 B1 are Devices for applying adhesive tape known.

The invention has for its object to provide a device for preparing a wound from a web supply roll for a flying reel change.

The object is achieved by the features of claim 1.

The advantages achieved by the invention are, in particular, that with the aid of the cutting device, the device in each case an outer edge of the wound up on the supply roll material web, for. B. paper web short path newly created, and by the movement of the adhesive tape dispensing device, an adhesive tape is applied in an exactly the length of this edge length corresponding to the thus generated edge of the web.

Cutting device and adhesive tape dispensing device of the device are preferably mounted together on a carriage. This makes it possible to cut the edge on a single reciprocation of the carriage during a first crossing of the web and to apply the adhesive tape in the subsequent crossing in the opposite direction.

With the aid of a second web edge sensor, it is possible during the movement of the carriage to detect that a side edge of the web will soon be reached and to slow down the movement of the carriage in order to allow an accurate detection of the position of the relevant web edge.

The adhesive tape dispensing device preferably has a roller for conveying the adhesive tape, the rotational speed of which is coupled to the movement speed of the adhesive tape dispensing device on its path across the web. This coupling prevents the adhesive tape from passing from the dispenser to the web is exposed to uncontrolled tensile forces that can lead to tearing of the adhesive tape.

In order to prevent the tape-edged edge of the web from shrinking during the application of the adhesive tape, the tape-dispensing device is provided with at least one tensioning tool for tensioning the web in its longitudinal direction. Relative to the direction of movement of the dispensing device dispensing the adhesive tape, the clamping tool is preferably arranged in front of an element which presses the adhesive tape onto the material web.

The clamping tool is preferably formed by a rolling on the web tensioning roller whose axis forms a non-right angle with the direction of movement of the adhesive tape dispensing device, so that upon movement of the tensioning roller in the direction of movement exerts this a force perpendicular to the direction of movement on the web.

According to an easily realizable embodiment, the direction of movement of the cutting device and the adhesive tape dispensing device can be defined perpendicular to the longitudinal edge of the web to be prepared. However, it may also be appropriate to choose a not exactly vertical orientation of the direction of movement in the train on the web longitudinal edges. While in an exactly vertical orientation of the direction of movement later when attaching the front edge of the prepared supply roll to a moving web, the adhesive bond between the front edge and the underlying layer of the supply roll must jerky tearing, proceeds in non-perpendicular orientation, the tearing of the adhesive bond and pinning continues along the running web across the width of the web, making the tacking process smoother and more reliable.

Embodiments of the invention are illustrated in the drawings and are in described in more detail below.

Fig. 1

eine schematische perspektivische Ansicht einer Vorrichtung zum Vorbereiten einer Vorratsrolle für einen fliegenden Rollenwechsel vor Beginn der Vorbereitung;

Fig. 2

die Vorrichtung mit an ihr platzierter Vorratsrolle;

Fig. 3

die Vorrichtung während des Greifens und Ausstreckens des äußeren Endes der Materialbahn;

Fig. 4

die Vorrichtung mit auf deren Arbeitstisch ausgebreiteter Materialbahn;

Fig. 5

eine schematische Draufsicht auf die Vorrichtung;

Fig. 6

eine schematische Vorderansicht einer Schneid- und Klebebandspendeeinrichtung;

Fig. 7

in größerem Maßstab die Klebebandspendeeinrichtung gemäß einer ersten Ausgestaltung;

Fig. 8

eine Ansicht der Klebebandspendeeinrichtung der Fig. 7 von unten;

Fig. 9

eine Vorderansicht, analog zu Fig. 7, einer Klebebandspendeeinrichtung gemäß einer zweiten Ausgestaltung; und

Fig. 10

eine Vorderansicht einer Klebebandspendeeinrichtung gemäß einer dritten Ausgestaltung.

Show it:

Fig. 1

a schematic perspective view of an apparatus for preparing a supply roll for a flying role change before the start of the preparation;

Fig. 2

the device with placed on her supply roll;

Fig. 3

the device during gripping and extending the outer end of the web;

Fig. 4

the device with spread on the work table material web;

Fig. 5

a schematic plan view of the device;

Fig. 6

a schematic front view of a cutting and adhesive tape dispensing device;

Fig. 7

on a larger scale, the adhesive tape dispensing device according to a first embodiment;

Fig. 8

a view of the tape dispenser of Fig. 7 from underneath;

Fig. 9

a front view, analogous to Fig. 7 an adhesive tape dispensing device according to a second embodiment; and

Fig. 10

a front view of an adhesive tape dispensing device according to a third Design.

Fig. 1 shows a stand-alone device for performing the preparation for a flying role change according to the invention. A supply roll 01, here a paper web roll 01, is conveyed on a carriage 03 which can be moved along a rail 02 to the device 05. The unpacked paper web roll 01 is oriented so that the free end of the material web, for. B. paper web on the device 05 facing side of the paper web roll 01 freely suspended. In front of the device 05, a lifting device 04 is embedded in the floor of a workshop, in the Fig. 1 is shown in lowered position and comprises two liftable and rotatably driven rollers 47 which, when raised, come into contact with a paper web roll 01 located in the preparation position in front of the device 05 and can set them in rotation. They lift the paper web roll 01 until it has reached a processing position just below a slightly sloping front part 48 of a work table 06 of the device 05, where it is detected by a sensor 57 which stops the upward movement of the lifting device 04. The width of the work table 06 corresponds at least to the web width of the paper web wound on the paper web roll 01.

The device 05 has two arms 08 which are pivotable about an axis 07 and which at their free end and around this free end are pivotably held about an axis parallel to the axis 07, carry two rubber rollers 09 and a brush roller 49. The rubber rollers 09 are mutually displaceable and can be brought into frictional contact with each other, so that one of them, by an in Fig. 5 shown motor 56 is driven, the other entrains.

At the beginning of the processing, the arms 08 are lowered towards the paper web roll 01 held on the lifting device 04, up to the in Fig. 2 shown position a reed contact or an equivalent sensor indicates that the rubber rollers 09 the Touch paper web roll 01. Then, the contacting rubber rollers 09 are rotated by the motor 56 in rotation. At the same time, the rollers 47 of the lifter 04 are rotated so that paper from both sides of the position where the rubber rollers 09 contact the paper web is drawn into the gap between the two rubber rollers 09 and pinched therein.

After this is done, the arms 08 pivot out of position Fig. 2 back and about the starting position of the Fig. 1 and the intermediate position of Fig. 3 out into the in Fig. 4 shown position, wherein, accompanied by a corresponding rotation of the rollers 47 of the lifting device 04, further paper is unwound from the paper web roll 01 and spread on the work table 06.

When the arms 08 their in Fig. 4 have reached the end position of the paper web over the entire work table 06 including a rear horizontal portion 13 of the same, the rubber rollers 09 are rotated again to pull through paper and so to tighten the paper web on the work table 06. Subsequently, the two rubber rollers 09 are moved apart by mounted on the arms 08 actuators to open a gap between them, so that the clamping of the paper web is canceled and any lateral distortion of the paper web can relax. Subsequently, the actuators close the gap again, and the paper web is tightened by a renewed rotation of the rubber rollers 09 again (not shown).

A cutting and adhesive tape dispensing device 11, which in Fig. 1 is shown as a closed box, is movable on horizontal rails 12 above the horizontal rear portion 13 of the work table 06. The rails 12 are arranged in a horizontal plane at a small angle, preferably in an opening angle of greater than 1 ° smaller than 10 °, in particular of 3 ° + / 1.5 ° to the longitudinal axis of the paper web roll 01, so that the cutting and adhesive tape dispensing device 11 slightly moved obliquely over the spread on the horizontal portion 13 of the work table 06 piece of paper web. But it is also a parallel course of the rails 12 possible and / or the inclination of the rail 12 is adjustable. Fig. 5 shows this with reference to a plan view of the device 05 in the position of Fig. 1 A cutting edge 51 extends parallel to the alignment of the rails 12 along an edge of the region 13 facing away from the paper web roll 01.

Fig. 6 schematically shows the structure of the cutting and adhesive tape dispensing device 11. It comprises an adhesive tape dispensing device 14, z. B. an adhesive tape dispenser 14, whose construction is based on Fig. 7 will be explained in more detail, and / or preferably a reflective film dispenser 16 and a cutting device with a held on an articulated arm 18, circular cutting blade 17, which is lowered by means of an actuating cylinder 19 from the illustrated, retracted position into a cutting position in which it is the cutting edge 51 of the work table 06 crosses. A second actuating cylinder, not shown, is perpendicular to the plane of action with the direction of action Fig. 6 provided to press the cutting blade 17 in its lowered position against the cutting edge 51 of the work table 06.

To prepare the cutting, a clamping finger 21, which is in Fig. 1 from the rear portion 13 of the work table 06 in the vicinity of the cutting edge 51 is shown projecting upwards, swung down on a lateral edge of the tail of the paper web to press them against the work table 06 and so fix. Once this is done, the cutting and tape dispensing device 11 moves on the rails 12 at a first, high speed. A sensor 22 arranged adjacent to the cutting blade 17, such as an optical sensor or a reed contact, detects when it, in the perspective of the Fig. 1 coming from the front, the front edge 23 of the work table 06 crosses, and then triggers the actuation of the actuating cylinder 19, so that the cutting blade 17 is extended. At the same time the second actuating cylinder is activated to the cutting blade 17 to the cutting edge 51st to press.

On the adhesive tape dispenser 14 (see Fig. 7 ) are two sensors 24; 26, z. B. two web edge sensors 24; 26 here Reflexfotozellen, provided for detecting the edges of the paper web during the movement of the cutting and tape dispensing device 11. When the cutting and tape dispensing device 11 related to the perspective of Fig. 6 and 7 Moving from right to left over the work table 06 with the paper web spread thereon, the sensor 24 first detects the right edge of the paper web and causes a reduction in the speed of movement of the cutting and adhesive dispensing device 11, so that the sensor 26 the respective edge at a slower speed crosses. When the sensor 26 detects this right edge, it activates another sensor 27 which is aligned with a scale attached to one of the rails 12 that carries position coding, such as a Gray code. By reading the relevant code at the time the second sensor 26 detects the right web edge, the sensor 27 is able to accurately measure the position of the right web edge.

After this is done, the cutting and tape dispensing device 11 is again accelerated to the high first speed, and the cutting knife 17 rapidly cuts through the paper web until the sensor 24 detects the crossing of the left web edge. Again, the speed of the cutting and tape dispensing device 11 is reduced to accurately measure the position of the left web edge with the aid of the second web edge-oriented sensor 26 and the scale-oriented sensor 27.

The cutting and tape dispensing device 11 continues until the left end position of the guide has been reached and thus the left edge of the worktable 06 has passed; now the cutting blade 17 is raised again and the movement of the cutting and tape dispensing device 11 is stopped.

Before the operation of the tape dispenser 14 during the return movement of the cutting and tape dispensing device 11 from left to right in the perspective of Fig. 6 and 7 must be explained at this point on the basis of Fig. 7 First, the structure of the adhesive tape dispenser 14 will be described in detail. A supply of two-sided adhesive tape 29 with covering tape 30 adhering thereto is wound up on a supply roll 28. The structure of an adhesive tape used to prepare a flying reel change 29 is in itself z. B. by the WO 02/083532 A1 or WO 03/024850 A1 is known and will therefore not be explained again here. A path of the adhesive tape 29 and the shroud 30 extends from the supply roll 28 initially via a plurality of pulleys 31 to a braking device 32 and from there in turn via pulleys 31 to a vertically movable pressure roller 33. The braking device 32 comprises a stationary and one with the aid of an actuating cylinder movable brake shoes 35, between which adhesive and shroud 29; 30 are passed. Between two of the pulleys 31, a belt tensioner is arranged in the form of a on a pivot arm 52 by means of an actuating cylinder 53 against the shroud 30 acted upon roller 54. The pressure roller 33 is lowered by adjusting cylinder (not shown) to press them along the previously cut by the cutting blade 17 on the edge held on the work table 06 paper web. Since the adhesive tape 29 adheres more strongly to the paper web than to the shroud 30, shroud 30 and adhesive tape 29 separate at this point, and the path of the shroud 30 continues to a collecting device 34, for. B. a take-up reel 34 on which the shroud 30 collects.

Adhesive tape 29 and shroud 30 are conveyed by means of a drive roller 37 which, between the pressure roller 33 and the take-up reel 34, is looped around only by the shroud 30. The drive roller 37 is driven by a motor 36 (see Fig. 8 ) rotates, which only rotates when the pressure roller 33 is lowered against a paper web, and whose rotational speed is exactly proportional to Movement speed of the cutting and adhesive tape dispensing device 11 is controlled so that the peripheral speed of the drive roller 37 coincides with the movement speed. This can be z. B. be carried out with a speed feedback. Thus, a tensile stress of the paper web during gluing, which could lead to undesirable slippage, avoided. The take-up reel 34 is slippable, for example, via a belt, coupled to the motor 36, so that the shroud 30 is always wound at the speed determined by the pressure roller 33.

On both sides of the pressure roller 33 with respect to the direction of movement of the cutting and adhesive dispensing device 11 clamping tools 38, z. B. a roller 38, z. B. a tension roller 38 and a Hilfsandrückrolle 39 is provided which are movable by means of adjusting cylinders 41 between a raised position and a lowered position in which they press against the paper web or the work table 06.

Fig. 8 shows a view of the tape dispenser 14 from below. On the base plate 42, the above-described components 28, 31, 32, 33, 34, 36, 49 and 41 are held. As the cutting and tape dispensing device 11 moves across the worktable 06, this base 42 moves exactly parallel to the cutting edge, with the various rolls partially over that part of the web that remains on the paper web roll 01, and partially over the cut Part. The motor 36 is above the cut part. The course of the cutting edge 51 is indicated as a dot-dash line.

The axis of the tension roller 38 is not aligned exactly perpendicular to the base plate 42 and to the direction of movement of the cutting and adhesive dispensing device 11, but it deviates slightly from the vertical so that they the axis of the auxiliary pressing roller 39 on the paper web roll 01 facing side of the base plate 42 crosses. With this inclination of the tension roller 38 is achieved that when the Cutting and tape dispensing device 11 from left to right with respect to the perspective of Fig. 6 and 7 that is, with the tension roller 38 advancing, moved across the paper web, the tension roller 38 on this paper web exerts a clamping force in the direction of the cutting edge 51 out. Thus, the web edge is always taut and can not beat waves when the tape dispenser 14 moves across it.

A cutting tool 43, z. B. a cutting blade 43 is pivotally supported on a pivot arm 44 by a control cylinder 46. It serves to sever the adhesive tape 29 in each case after the completion of an adhesive tape dispensing operation. In order to exclude that the cutting blade 43 thereby damage the paper web, the cutting blade 43 is suspended so that it moves at a small angle α to the direction of movement B of the cutting and adhesive tape dispensing device 11.

The tape dispensing process proceeds as follows. After the cutting and tape dispensing device 11 moves from right to left on the work table 06 and thereby cut off the paper web, it is now moved back, the sensor 27, the location of the cutting and tape dispensing device 11, z. B. based on the scale, continuously monitored. (Instead of the scale, a rotary encoder coupled to the drive is also possible.) For example, only the pulses of a stepping motor can be detected). 26; Detected 27 calculated position at which the pressure roller 33 is located exactly above the left edge of the paper web, the pressure roller 33, tensioning roller 38 and auxiliary pressure roller 39 are lowered and the motor 36 is put into operation, so that adhesive tape 29 at the speed of the cutting and Tape dispensing device 11 is unwound and pressed onto the edge of the paper web, wherein the lying between the tensioning roller 38 and the auxiliary pressing roller 39 portion of the web edge is tightened as described above.

As soon as the sensor 27 detects a position mark, that of the precalculated position corresponds to the pressure roller 33 passes the right edge of the web, the pressure roller 33 is raised again. Simultaneously with the lifting of the pressure roller 33, the braking device 32 begins to clamp shroud 30 and tape 29 so as to tighten the now freely extending between the right edge of the paper web and the raised pressure roller 33 piece of adhesive tape. Subsequently, the cutting blade 43 moves down to sever the tape 29 exactly at the level of the web edge. Only then does it come to a firm clamping on the braking device 32, and the promotion of the adhesive tape 29 by the motor 36 is stopped. The roller 54 of the belt tensioner is moved against the adhesive tape 29 in order to tension the cover tape 30 so that the beginning of the adhesive tape 29 comes to rest for the next bonding process at the location on the periphery of the pressure roller 33, which touches the paper web to be bonded. The adjusting cylinder 46; 53, which drive the movement of the cutting blade 43 as well as the braking device 32, are provided with a throttle, which slows the movement of both, in the case of the cutting blade 43, to prevent them in spite of the small angle in which they relate moved onto the paper web, it hangs on this and it breaks through, in the case of the braking device 32 to synchronize the braking operation with the cutting of the adhesive tape 29 so that the braking device 32 already tightens the tape 29 when the cutting blade 43 hits it, however, it does not completely stop, which, as the entire cutting and tape dispensing device 11 continues to move, would result in the tearing of the adhesive tape 29 at an uncontrollable location. Both throttles are adjustable in order, if necessary, to be able to adapt the speeds of the braking device 32 and the cutting blade 43 to each other.

A few cm behind the position at which the pressure roller 33 has been raised, the tension roller 38 and the auxiliary pressure roller 39 are also raised again.

Simultaneously with the operation of the adhesive tape dispenser 14, taking into account their distance from each other in the direction of movement, and the reflective film dispenser 16 in operated in a known manner.

After the web edge is completely provided with tape 29 and optionally reflective tape, drives the cutting and adhesive tape dispensing device 11 with the high first speed in their in Fig. 1 shown basic position.

After this is done, the arms 08, which carry the rubber rollers 09 and brush roller 49, swung back into the position of Fig. 2 in which they rest on the circumference of the paper web roll 01. The rollers 47 of the lifting device 04 are set in motion to rotate the paper web roll 01 in the counterclockwise direction, so that the paper web end is pulled down from the work table 06 and back to the paper web roll 01, while - either in or against the direction of the paper web end on the Worktable 06 rotating brush roller 49 presses the paper web against the body of the paper web roll 01 and so finally presses a projecting beyond the cut edge of the paper out portion of the adhesive tape 29 against the body of the paper web roll 01. Thus, the free end of the paper web is fixed on the supply roll body until it is withdrawn for use.

Thus, the preparation of the roll change is completed, the lifting table 04 is lowered again, so that the paper web roll 01 comes to rest on the carriage 03, the carriage 03 is moved on the rail 02, and the arms 08 return to their in Fig. 1 shown starting position back. The device 05 is now ready to prepare a second supply roll in the manner described above.

Fig. 9 shows in one too Fig. 7 analogous view of a second embodiment of an adhesive tape dispensing device 14. Parts of this adhesive tape dispensing device 14, those of the adhesive tape dispensing device 14 from Fig. 7 are denoted by the same reference numerals and will not be described again. The drive roller 37 is in the embodiment of Fig. 9 omitted. Instead, the motor 36 is slippage coupled via a belt to the take-up reel 34, so that the shroud 30 is always wound with an adjustable lead to the speed of the pressure roller 33. This contributes to the fact that z. B. loops, which may arise due to the alternating curvatures between shroud 30 and tape 29 as they pass through the adhesive dispenser 14, are pulled taut, so that they can not interfere with the cutting of the adhesive tape 29.

Fig. 10 shows, turn in one too Fig. 7 analogous view, a third embodiment of an adhesive tape dispensing device 14. As in the embodiment of Fig. 7 the drive roller 37 driven by the motor 36 acts on the shroud 30 separate from the adhesive tape 29 behind the pressure roller 33. However, here the shroud 30 is not looped at a large angle to the drive roller 37 around, but runs with a small loop through a gap formed between the drive roller 37 and a rubber press roller 58, which is held pressed by a control cylinder 59 against the drive roller 37 is.

At the exit of the gap formed between the drive roller 37 and the rubber pressing roller 58 is an inlet of a collecting device 61, e.g. B. a collecting container 61 which is provided to receive the unrolled shroud 30 during the movement of the adhesive tape dispenser 14.

At the collecting container 61, a cutting device 62 is arranged with a movable knife, which serves to chop the introduced into the collecting container 61 shroud 30 into short pieces, which are collected in the collecting container 61. Alternatively, it can also be provided that the cutting device 62 is activated only once in each case after each tape dispensing operation in order to cut off the shroud 30 collected during this process in the collecting container 61.

An actuator cylinder 64 is coupled to a shutter 63 of the reservoir 61 to open each of them when the carriage is in its left end position so as to dispense the collected shroud 30 into a stationary container (not shown). In order to ensure a complete emptying of the collecting container 61, a in the Fig. 10 unillustrated blower mounted on the reservoir 61 to blow its contents in the stationary container. A renewed movement of the carriage is only started after the collecting container 61 emptied and its shutter 63 is closed again.

LIST OF REFERENCE NUMBERS

01

Supply roll, paper web roll

02

rail

03

carriage

04

lifter

05

contraption

06

worktable

07

axis

08

poor

09

squeegee

10

-

11

Cutting and adhesive tape dispensing device

12

rail

13

Field, horizontal (06)

14

Adhesive tape dispensing device, adhesive tape dispenser

15

-

16

Reflective tape dispenser

17

cutting blade

18

articulated arm

19

actuating cylinder

20

-

21

clamping fingers

22

sensor

23

Edge, front

24

Sensor, web edge sensor

25

-

26

Sensor, web edge sensor

27

sensor

28

supply roll

29

duct tape

30

shroud

31

idler pulley

32

braking means

33

capstan

34

Collecting device, take-up roll

35

jaw

36

engine

37

capstan

38

Clamping tool, roller, tensioning roller

39

Clamping tool, auxiliary roller

40

-

41

actuating cylinder

42

baseplate

43

Cutting tool, cutting blade

44

swivel arm

45

-

46

actuating cylinder

47

Roll (04)

48

Front part (06)

49

brush roll

50

-

51

cutting edge

52

swivel arm

53

actuating cylinder

54

role

55

-

56

engine

57

sensor

58

Gummiandrückrolle

59

actuating cylinder

60

-

61

Collection device, collection container

62

cutter

63

flap

64

actuating cylinder

B

movement direction

α

angle

Claims (31)

1. An apparatus for preparing a storage roll (01) wound from a web of material for a flying roll change in a machine which processes the web of material, with an adhesive-tape-dispensing device (14) movable transversely with respect to the web of material for applying adhesive tape (29) along an edge of the web of material, wherein a contact roll (33) pressing the adhesive tape (29) against the web of material is arranged so as to guide a cover tape (30) adhering to the adhesive tape (29), characterized in that the adhesive-tape-dispensing device (14) has at least one clamping tool (38; 39) for clamping the web of material in the direction of a longitudinal axis of the storage roll (01), i.e. in the direction of a width of the web of material, and the clamping tool (38; 39) is arranged, with respect to the direction of movement of the adhesive-tape-dispensing device (14) delivering the adhesive tape (29), in front of the contact roll (33) of the adhesive-tape-dispensing device (14) pressing the adhesive tape (29) onto the web of material.
2. An apparatus according to Claim 1, characterized in that the clamping tool (39) is a roll (39) rolling on the web of material and referred to as the clamping roll (39).
3. An apparatus according to Claim 2, characterized in that the axis of the clamping roll (39) forms a non-right angle with the direction of movement of the adhesive-tape-dispensing device (14).
4. An apparatus according to Claim 2, characterized in that the clamping roll (39) and the pressing contact roll (33) are offset with respect to each other transversely to the direction of movement.
5. An apparatus according to Claim 1, characterized in that the apparatus has a slitter (17, 18, 19) for severing the web of material
6. An apparatus according to Claim 5, characterized in that the direction of movement of the slitter (17, 18, 19) and the adhesive-tape-dispensing device (14) is at a right angle to the longitudinal edges of the web of material.
7. An apparatus according to Claim 5, characterized in that the direction of movement of the slitter (17, 18, 19) and the adhesive-tape-dispensing device (14) is at an oblique angle to the longitudinal edges of the web of material.
8. An apparatus according to Claim 7, characterized in that the inclination of the direction of movement is adjustable.
9. An apparatus according to Claim 7, characterized in that the direction of movement in one manner of operation is not equal to 90° with respect to the longitudinal edges of the web of material.
10. An apparatus according to Claim 7, characterized in that the direction of movement in another manner of operation is equal to 90° with respect to the longitudinal edges of the web of material.
11. An apparatus according to Claim 7, characterized in that the slitter (17, 18, 19) and/ or the adhesive-tape-dispensing device (14) is or are capable of being moved on a rail (12).
12. An apparatus according to Claim 11, characterized in that the rail (12) is not equal to 90° with respect to the longitudinal edges of the web of material.
13. An apparatus according to Claim 1, characterized in that the adhesive-tape-dispensing device (14) has a roller (37) driving at least one cover tape (30) of the adhesive tape (29) on its path from the storage roll (28) to the winding roll (34) in a friction-locking manner.
14. An apparatus according to Claim 1, characterized in that a collecting device (34; 61) is provided for collecting the cover tape (30) which has been severed from the adhesive tape (29).
15. An apparatus according to Claim 14, characterized in that the collecting device (34) is a winding roll (34) for winding up the cover tape (30).
16. An apparatus according to Claim 13, characterized in that the driving roller (37) is arranged on the path from the contact roller (33) to the winding roll (34).
17. An apparatus according to Claim 14, characterized in that the collecting device (61) is a collecting container (61).
18. An apparatus according to Claim 13 or 17, characterized in that the driving roller (37) is arranged at an inlet opening of the collecting container (61).
19. An apparatus according to Claim 1, characterized in that the adhesive-tape-dispensing device (14) has a winding roll (34) for winding up the cover tape (30) which has been severed from the adhesive tape (29).
20. An apparatus according to Claim 19, characterized in that the winding roll (34) is driven with a given advance with respect to the movement of the adhesive tape (29).
21. An apparatus according to Claim 1 or 20, characterized in that the adhesive-tape-dispensing device (14) has a cutting tool (43) for cutting off the adhesive tape (29) pressed on, and the cutting tool (43) comprises a cutting blade (43) movable at an acute angle with respect to the direction of movement of the adhesive-tape-dispensing device (14).
22. An apparatus according to Claim 21, characterized in that the cutting speed of the cutting blade (43) is adjustable.
23. An apparatus according to Claim 22, characterized in that a throttle with adjustable damping is coupled to the cutting blade (43).
24. An apparatus according to Claim 13, characterized in that a braking device (32) is provided for braking the supply of the adhesive tape (29) to the contact roller (33).
25. An apparatus according to Claim 24, characterized in that the braking device (32) comprises two clamping jaws (35) arranged on the path of the adhesive tape (29) from the storage roll (28) to the contact roller (33) in order to clamp in the adhesive tape (29) and the cover tape (30).
26. An apparatus according to Claim 24, characterized in that the braking device (32) is arranged so as to block the supply of the adhesive tape (29) with a time delay after the severing of the adhesive tape (29) by the cutting tool.
27. An apparatus according to Claim 24, characterized in that when the cutting tool (43) meets the adhesive tape (29) the braking device (32) is arranged so as to have the effect of tautening the adhesive tape (29) but not of blocking it.
28. An apparatus according to Claim 1, characterized in that the apparatus has a slitter (17, 18, 19) for severing the web of material
29. An apparatus according to Claim 28, characterized in that the slitter (17, 18, 19) and the adhesive-tape-dispensing device (14), mounted on a common slide (12), form a cutting and adhesive-tape-dispensing device (11).
30. An apparatus according to Claim 29, characterized in that during a movement of the cutting and adhesive-tape-dispensing device (11) over the web of material in a first direction the slitter (17, 18, 19) severs the web of material and during a subsequent movement of the cutting and adhesive-tape-dispensing device (11) in the opposite direction the adhesive-tape-dispensing device (14) applies the adhesive tape (29).
31. An apparatus according to Claim 29, characterized in that a reflex foil dispenser (16) is arranged on the common rails (12).

Images