WO2023199245A1

WO2023199245A1 - A web changer of tobacco industry material

Info

Publication number: WO2023199245A1
Application number: PCT/IB2023/053748
Authority: WO
Inventors: Leszek Sikora; Radoslaw Figarski; Bartosz Cieslikowski
Original assignee: International Tobacco Machinery Poland Sp. Z O.O.
Priority date: 2022-04-13
Filing date: 2023-04-12
Publication date: 2023-10-19
Also published as: PL440923A1

Abstract

A web changer (3, 4) of tobacco industry material characterized in that the web changer (3,4) is also provided with an adhesive head (10) adapted to apply adhesive to a continuous web of material, a holder unit (12b) adapted for holding and releasing a continuous web of material of a second reel (5b, 7b) mounted on a mandrel (15b) in a second position, when the mandrel (15b) of the second reel (5b, 7b) rotates the second reel (5b, 7b) of material, wherein the cutting head (29), adhesive head (10) and holder unit (12a, 12b) are adjusted so that the application of the adhesive, the cutting of the continuous web of material (2, 6) fed from the first reel (5a, 7a), and the moving away the holder unit (12b) holding the web of material from the second reel (5b, 7b) mounted on the second mandrel (15b) are essentially carried out at the production speed of the continuous web (2, 6) feed.

Description

A WEB CHANGER OF TOBACCO INDUSTRY MATERIAL

The object of the invention is a web changer of tobacco industry material.

The tobacco industry uses machines for making filter rods or tobacco rods. Such machines form a rod from a continuous web of filter material, from a string of segments of finite length or from fibres of a predetermined length, which is then wrapped in a web of a wrapper material. The continuous rod thus formed is cut into single rods of determined lengths.

T o maintain the continuous production of tobacco articles, it is necessary to supply a web of wrapper material uninterruptedly and to ensure that webs of material are joined quickly. This is effected, for example, by using a mechanism of a web changer of wrapper material, which can be fitted with two reels of wrapper material. In the course of manufacture, the machine takes a continuous material web from the first reel, at that time a second reel of material is in stand-by mode and waits for the moment when the trailing end of the material web from the first reel is joined to the leading end of the material web on the second reel. The joining of these two webs of material on the machine is usually carried out by mechanical embossing of the two ends of the overlapping webs of material, or by gluing them together with double-sided adhesive tape, which is usually stuck to the leading end of the material web wound up on a new reel. Articles made from a web containing such a material junction are considered defective and must be rejected from further manufacture.

The process of joining two webs of material during production usually requires the machine to be stopped or slowed down, or alternatively, a buffer is used in which an unwound material web of the appropriate length is stored, the unwinding of which during the process of joining the webs allows to perform the joining without stopping. It is important to make the splice in such a way that as little waste as possible is left on the reel in the form of the end of the web being cut from the splice point to the end of the web. It is also important that the entire process of changing the web of material on the machine takes place without human intervention.

In the state of the art, there are known methods and machines of the tobacco industry which use a device for joining material webs.

International publication WO 2015173275 presents a method and device for joining material webs on a machine for manufacturing articles of the tobacco industry. The machine is provided with devices for changing a material web wound on a reel and a buffer for storing a material web. When the first web of material runs out, a second reel with a second web of material is waiting on the changer device. To merge the two webs, the speed of feeding the web that is about to end into the machine is reduced or stopped altogether to make the merge. At this time, to maintain the continuity of the manufacturing process, the material web is taken from the buffer.

Patent EP1389602B1 presents a device for joining two webs of tobacco industry material, using a melting unit while moving them in parallel with each other at the same linear speed. In this solution, a material web is unwound from a new reel parallel to the web of material leading end. The process of joining the webs is based on embossing with the knurled surface of the joining unit both webs at the same time while moving them simultaneously at the same speed. After the embossing, the web of the end of the material is cut off, as well as the initial section of the new web, which was unwound from the reel to match the speed of the web running out.

Patent EP1437055B1 presents a method and apparatus for joining two webs of tobacco industry material using a double-sided adhesive tape. Pieces of double-sided adhesive tape are inserted by means of a feeding device between a web of material that is running out and a web of new material. After joining the two webs of material, the end of the trailing web is cut off. The known solutions of the state of the art use ways of joining continuous webs of tobacco industry material, where a significant amount of the web is cut off, which is previously unwound from the reel during the joining process in order to achieve a speed close to the feeding speed of the material web that is running out, or there are ways of joining which require the rejection from the production of articles made from the strand of material containing such splice. In all known solutions, there is a large waste of spliced material or finished articles produced from the material containing the point where the webs are spliced

No solution known to the state of the art solves the problem of joining webs while maintaining full production speed, without the need for additional storage buffers and in a fully automated manner.

The essence of the invention is a web changer of tobacco industry material provided with a first mandrel of a first reel of tobacco material and a second mandrel of a second reel of tobacco material adapted so that they swap places between the first position and the second position during continuous feeding of the webs of material. The changer is provided with a holder unit adapted to hold a web of material on the second reel mounted on the second mandrel in the first position, a cutting head adapted to cut a continuous web of material fed from the first reel mounted on the first mandrel in the first position. The changer according to the invention is characterised in that the web changer is further provided with an adhesive head adapted for applying adhesive to a continuous web of material, and a holder unit is adapted for holding and releasing a continuous web of material of a second reel mounted on a mandrel in a second position, when the mandrel of the second reel rotates the second reel of material. The cutting head, adhesive head and holder unit are adjusted so that the application of the adhesive, the cutting of the continuous web of material fed from the first reel, and the moving away of the holder unit holding the web of material from the second reel mounted on the second mandrel are essentially carried out at the production speed of the continuous web feed.

Advantageously, the changer according to the invention is characterised in that it is provided with a pressing element adapted to press the fed web of material from the first reel to the web of material from the second reel.

Advantageously, the changer according to the invention is characterised in that the cutting head is adapted to cut the web of material of the first reel at an angle relative to the longitudinal axis of the continuous web of material fed from the first reel.

Advantageously, the changer according to the invention is characterised in that the adhesive head is adapted to apply adhesive to a continuous web of material on a second reel mounted on a second mandrel in a second position.

Advantageously, the changer according to the invention is characterised in that it is provided with a second cutting head adapted to cut a continuous web of material from the second reel of material at an angle relative to the longitudinal axis of the web of material when the second reel is mounted on a mandrel in the first position.

Advantageously, the changer according to the invention is characterised in that the adhesive head is provided with a set of sequential nozzles applying adhesive paths parallel to the longitudinal axis of the continuous web of material of the second reel with spacing in the axial direction of the web of material.

Advantageously, the changer according to the invention is characterised by the fact that the adhesive head is adapted for sequential application of adhesive paths.

Advantageously, the changer according to the invention is characterised by having an adhesive head adapted to feed a fast-drying adhesive Advantageously, the changer according to the invention is characterised in that the holder unit is provided with a cooperating element adapted to cooperate with a positioning element fixing the carrier element in a fixed position

Advantageously, the changer according to the invention is characterised in that it is provided with an adhesive head adapted to apply adhesive to a continuous web of material on a second reel mounted on a second mandrel in a second position, when the mandrel of the second reel of material rotates the second reel of material, or to the end of the taken web of the first reel mounted on a first mandrel in a first position, when the mandrel of the first reel of material rotates the first reel of material.

Advantageously, the changer according to the invention is characterised in that the cutting head, the adhesive head and the holder unit are adapted so that the application of the adhesive, the cutting of the continuous web of material fed from the first reel, the moving away of the holder unit holding the web of material from the second reel mounted on the mandrel takes place, when the speed of the continuous web of material on the outer peripheral surface of the second reel is equal to the speed of the feed of the web of material from the first reel, and is in the range of 300 to 550 m/s, preferably in the range of 450 to 550 m/s.

Furthermore, the essence of the invention is a method of joining the web of tobacco material on a continuous web changer, wherein the beginning of the web of material of the second reel is held by a holder. The method according to the invention is characterised by the fact that a second mandrel with a second reel of material together with a holder holding the beginning of the web of material is spun, the adhesive is applied to the continuous web of material, the holder holding the beginning of the web of material is released, the continuous web of material is cut off from the first reel of material on the first mandrel. The application of adhesive to the continuous web, the cutting of the continuous web and the release of the holder holding the beginning of the web are generally carried out at the production speed of the continuous web feed.

Advantageously, the method according to the invention is characterised by the fact that an adhesive is applied to a continuous web of material on the second reel in the area of the beginning of the web of material

Advantageously, the method according to the invention is characterised by pressing the end of the taken web of material from the first reel against the beginning of the web of material of the second reel.

Advantageously, the method according to the invention is characterised in that the continuous web of material from the first reel of material on the first mandrel is cut at an angle to the longitudinal axis of the continuous web of material.

Advantageously, the method according to the invention is characterised in that the application of the adhesive, the cutting of the continuous web of material fed from the first reel, the moving away of the holder unit holding the web of material from the second reel mounted on the mandrel takes place, when the speed of the continuous web of material on the outer peripheral surface of the second reel is equal to the speed of the feed of the web of material from the first reel, and is in the range of 300 to 550 m/s, preferably in the range of 450 to 550 m/s.

The purpose of the present invention is to ensure that two webs of material are joined at full production speed in a fully automated manner without necessity to apply a web of material storing buffer.

The advantageous embodiment of the subject of the invention has been shown in greater detail in the following figures whereby:

Fig. 1 presents a machine for manufacturing tobacco articles from a continuous web of material with two changers; Fig. 2 presents a machine for manufacturing articles of the tobacco industry in the second embodiment with one web changer;

Fig. 3 presents a tobacco industry web changer of tobacco industry material with holder units;

Fig. 4 presents the web changer of the tobacco industry material during the unwinding of the protective layer from the second reel;

Fig. 5 presents the web changer of the tobacco industry material during cutting off of the protective layer from the second reel;

Fig. 6 presents the web changer of the tobacco industry material during winding of the web of the second reel;

Fig. 7 presents the web changer of the tobacco industry material while holding the beginning of the web of the second reel;

Fig. 8 presents a first embodiment of the web changer of a tobacco industry material during the process of joining the webs;

Fig. 9 presents a second embodiment of the web changer of a tobacco industry material during the process of joining the webs;

Fig. 10 presents the web changer of the tobacco industry material during the process of joining the webs in a side view;

Fig. 11 presents the web changer of the tobacco industry material after the web joining process;

Fig. 1 presents a machine 1 for manufacturing tobacco articles R from a continuous web of material 2. Machine 1 in this embodiment has two material web changers 3 and 4. The web changer 3 is arranged to feed a continuous web of tobacco industry material 2 from reels 5a and 5b, while the web changer 4 is arranged to feed a continuous web of a wrapper material 6 from reels 7a and 7b. The continuous web 2 of material of the tobacco industry may be paper, processed tobacco, foil or any other material that can be unwound from a reel and can be used in the tobacco industry. The material web 2 is supplied to the machine

1 in the form of reels 5a and 5b, from which is successively unwound and subjected to a further process on the machine. After the continuous rod CR has been pre-formed from the material web 2 in the forming unit 8, the pre-formed continuous rod is wrapped with a web of wrapper material 6. The continuous rod CR thus formed is then cut by a cutting head 9 into rods of a predetermined length to form articles R of the tobacco industry.

In order to ensure uninterrupted production, additional second reels 5b and 7b are located on web changers 3 and 4, which wait until the material on the first reels respectively 5a and 7a is used in the production process. When the material wound on the first reels 5a, 7a is running out, the web changers 3, 4 swap the position of the reels 5a for 5b and 7a for 7b connecting at the same time the trailing end of the material web

2 from the first reel 5a with the leading end of the material web 2 located on the second reel 5b and the trailing end of the material web 6 from the first reel 7a with the leading end of the material web 6 located on the second reel 7b. The joining of the webs of material is done by applying with adhesive heads 10 adhesive paths to the leading ends of the webs of material on the second reel 5b, 7b and pressing against the adhesive paths of the web of material 2, 6 that is running out on the first reel 5a, 7a. The adhesive head 10 can be in the form of, a nozzle, a roller or any other element that applies an adhesive layer to a continuous web of material.

Fig. 2 presents a machine 1 in a second embodiment for manufacturing tobacco articles with one web changer 4. The machine 1 is adapted for manufacturing tobacco articles in the form of rods R formed by cutting from a continuous rod CR formed from tobacco material 11 . In this embodiment the material 11 may be tobacco, material of plant origin, materials of organic origin, materials of inorganic origin or other materials not mentioned but approved for use in the tobacco industry. The method of joining the webs of material from the reel 7a with the material web on the reel 7b is analogous to the first embodiment shown in Fig.1.

Fig. 3 presents a material web changer 3, 4 with holder units 12a, 12b arranged to hold the ends of material webs wound on reels (not shown) by holders 13a, 13b. The holder 13a, 13b is rotary swing-mounted to a carrier element 14a, 14b. The swing movement of the holder 13a, 13b in this embodiment is forced by a spring element 17a, 17b and a positioning element 31. The carrier element 14a, 14b together with the disc 16a, 16b are seated pivotally around the Xa, Xb axis of the mandrel 15a, 15b, onto which the reels with the wound web of material are fitted. The disc 16a, 16b has positioning holes 18a, 18b circumferentially arranged to allow the position of the holder 13a, 13b to be adjusted and locked accordingly with respect to the mandrel 15a, 15b and thus with respect to the beginning of web 23 of material located on the reel. Each of the mandrels 15a, 15b has its own drive (Fig. 10-11) to bring the reel with the material into a rotational motion. In addition, each holder unit 12a, 12b can have its own independent drive that allows the holder unit 12a, 12b to be put into rotational motion around the mandrel 15a, 15b and into motion along the Xa, Xb axis of the mandrel 15a, 15b.

Fig. 4 shows the changer 3, 4 during production, while unwinding the protective layer 34 web of material web from the second reel 5b, 7b. The web of material in this embodiment can be a web of wrapper material, filter material or any other material in the form of a web wound on a reel and approved for use in the tobacco industry. During the manufacturing process, a web of material 2, 6 is taken from the first reel 5a, 7a mounted on mandrel 15a At this time, a reel 5b, 7b with a new web of material is fitted to mandrel 15b. The tobacco industry typically uses reels that have, on their outer peripheral surface, at least one protective layer 34 of the web. The protective layer of the 34 web should be removed from the reel before the splicing process is carried out. If the reel of material does not have a protective layer 34, then at least one layer of the web that may have been damaged or contaminated during transport, for example, must be removed in order to maintain the required quality of the manufactured products. Once the second reel 5b, 7b is fitted onto the mandrel 15b, the holder unit 12b is moved into the waiting position, with the holder 13b moved away from the second reel 5b, 7b. The swinging movement of the holder 13a, 13b in the direction from the mandrel 15a, 15b is forced by the positioning element 31, which performs a reciprocating movement S towards the holder unit 12a, 12b, specifically towards the cooperating element 32a, 32b located at the other end of the holder unit 12a, 12b on the opposite side of the holder 13a, 13b. Once the holder 13b is in the waiting position, the protective layer 34 of the material web is removed from the reel 5b, 7b by means of the reel opening element 33. The opening element 33, for example, can be made in the form of a rotating arm, at the end of which there is a claw 37 that grasps the beginning of the protective layer 34 of the web of material on the reel. It is also possible to provide an opening element 33 in the form of a holder placed on an extending arm which grasps the beginning of the protective layer 34 of the web and, moving away from the reel, simultaneously unwinds the protective layer from the reel.

Once the second reel 5b, 7b is fitted onto mandrel 15b, the second reel 5b, 7b performs a rotational movement around mandrel 15b in the R2 direction until claw 37 grips the beginning of the web of material wound on the second reel 5b, 7b. The opening element 33 then carries out a swinging movement in the direction R4 until it reaches the position indicated by the dotted line in Fig. 4. In the illustrated figures, the proportions of the sizes of the individual elements may not be respected, so that the distance over which the opening element 33 performs a swinging movement to unwind the protective layer may not generally correspond to the length of the section to be cut off. The opening element 33, while performing a rotational movement, simultaneously unwinds the protective layer 34 of the material, as shown in Fig.5. It is also possible to use reels, for example, which will unwind the protective layer from the second reel 5b, 7b, until the entire section of the protective web has been unwound. The unwound section U of the protective layer 34 of the material is then cut off with the cutting head 35. Once the protective layer 34 of the material has been cut off, it is disposed of, while the remainder of the material web unwound from the reel and suitable for further use in production is wound onto the reel 5b, 7b by rotating the reel 5b, 7b in the direction indicated by the arrow R3, as shown in Fig.6.

Since the place of cutting with the cutting head 35 is known and the length L of the unwound web of material that remains after the protective layer 34 has been cut off is known, it is known how many revolutions the second reel 5b, 7b has to make or by what angle it has to be turned in order to wind the unwound web onto the second reel 5b, 7b. After the web has been wound onto the second reel 5b, 7b, the positioning element 31 releases the cooperating element 32b of the holder unit 12b thereby causing the swing movement of the holder 13b in the direction towards the outer peripheral surface 21 of the second reel 5b, 7b, as shown in Fig. 7.

After receiving a signal from the sensor 19 about the end of the material web 2, 6 on the first roll 5a, 7a, the disc 20 of the material web changer 3, 4 performs a rotational movement in the direction indicated by the arrow R1 together with the material reels 5a, 5b, 7a, 7b, changing their position from the first position to the second position, adopting the setting shown in Fig.8. Thus, mandrels 15a and 15b swap places, mandrel 15a moves to the first position and mandrel 15b moves to the second position. The first position of the mandrel 15a, 15b is understood to be when the unwinding of the web of material from the reels 5a, 5b, 7a, 7b ends, the core of the reel on which the used material on the mandrel was wound is removed and the full reel of the continuous web of material 5a, 5b, 7a, 7b is loaded. In alternative embodiment, the first position can be split into several intermediate positions. The second position of the mandrel 15a, 15b is understood to be the position in which the continuous web of material held by the holding unit 12a, 12b is released. In Fig. 7 the mandrel 15a is in the second position and the mandrel 15b in the first position, while in Fig. 8 the mandrel 15b is in the second position and the mandrel 15a in the first position. During the rotation of the disc 20, the beginning of the web 23 located on the outer peripheral surface 21 of the second reel 5b, 7b is held by the holder 13. The holding may comprise holding the beginning of the web 23 on both sides thereof, or pressing it against the outer peripheral surface 21 of the second reel 5b, 7b with the holder 13 so that the web of material does not unwind from the second reel 5b, 7b when changing the position of the disc 20 from the first position to the second position, as well as when accelerating the second reel 5b, 7b, and keeping the beginning of the web 23 in a constant position relative to the second reel 5b, 7b.

As the location of the angular position of the beginning of the web 23 of material on the outer peripheral surface 21 of the reels 5b, 7b is known, it is possible to control the position of the beginning of the web 23 of material, e.g. by means of a controller and drive of, for example, a servo motor.

Before starting the process of changing the position of the disc 20 from the first position to the second position, the second reel 5b, 7b is put into rotation in the direction R2 around the Xb axis of the mandrel 15b, in line with the direction A of the unwinding of the web 2, 6 from the first reel 5a, 7a. Together with the second reel 5b, 7b, a holder unit 12b with a holder 13b is put into rotary motion. The holder unit 12b in this position is moved towards the second reel 5b, 7b, positioned and interlocked with the blocking element 22 (not shown on figures), which cooperates with the positioning holes 18b located in the disc 16b. The positioning consists in adjusting the holder unit 12b in such a way that the position of the holder 13b coincides with the position of the leading end of the web 23, i.e. the holder 13b is located at the same place on the outer circumferential surface of the reel 5b, 7b as the leading end of the web 23 The blocking element

22 may be a blocking pin cooperating with the positioning holes 18a, 18b in the disc 16a, 16b, or an electromagnet, a gearbox, an electronic lock of a synchronized drive 27 of the mandrel 15a, 15b and a drive 28 of the holder unit 12a, 12b, or any other solution allowing to temporarily maintain a constant position of the holder 13a, 13b relative to the leading end of the web 23

After changing the position of the disc 20 to the position shown in Fig. 8, a web of material 2, 6 is taken from the first reel 5a, 7a while moving along the outer peripheral surface 21 of the second reel 5b, 7b, whose rotational velocity is equal to VR. The rotational velocity VR of the second reel 5b, 7b measured at its outer circumference corresponds to such a linear velocity that is substantially equal to or close to the linear velocity VL of the taken material web 2, 6 along the section where the material web 2, 6 is displaced in contact with the outer circumferential surface 21 of the second reel 5b, 7b. Due to the fact that both speeds are substantially equal, the slippage between the material web 2, 6 and the outer circumferential surface 21 is minimal or is completely eliminated. Due to little or no slippage, the web of material 2, 6 can move safely together with the holder 13a, 13b holding the leading end of the web 23, remaining in contact with its outer surface.

The linear velocity VL of the taken continuous web of material 2, 6 essentially corresponds to the production speed of the feed of continuous web of material 2, 6 and thus to the production speed of machine 1. For process reasons, the production speed of machine 1 may temporarily fluctuate, but it is generally expected to be as high as possible or to provide maximum production efficiency.

The production speed is between 300 and 550 m/s, preferably between 450 and 550 m/s. After receiving the signal from the sensor 19 about the approaching end of the web of material 2, 6 on the first reel 5a, 7a, the web 2, 6 taken from the first reel 5a, 7a is cut off by the cutting unit 29 and an adhesive path 36 is applied to the outer surface 21 of the second reel 5b, 7b by the adhesive head 10 so that the end 24 of the taken web 2, 6 is glued to the leading end of the material web 23 on the second reel 5b, 7b. For the gluing process, a fast-drying adhesive should be used, which allows the gluing process to be carried out in a very short time Since the leading end of the web 23 of the material is cut at an angle (shown in Fig.10) the adhesive head 10 can apply glue, for example, from a plurality of holes in a time offset so that the location of the glue application is as close as possible to the edge of the beginning of the web 23 It is also possible to position the adhesive head 10 at an angle substantially similar to the angle of the cut of the leading end of the web

23 relative to the edge 25 of the second reel 5b, 7b. In this arrangement of adhesive head 10, it will be possible to feed glue from each hole simultaneously.

Optimally, the adhesive path 36 will be given a length of between 10 and 150 mm, preferably 50 mm, at a distance of approximately 2 to 10 mm from the beggining of web 23. After gluing the end 24 of the taken web 2, 6, it is also possible to tighten the area where the web is joined, for example, by means of pressing element 26. The pressing element 26 for example can be a bar, roller or set of rollers, which are shown in the figures.

Alternatively, the adhesive head 10 may apply glue to the end of the taken web 24 from the side to be pressed against the beginning of the web 23 located on the reel 5b, 7b as shown in Fig. 9. The end of the taken web 24 in this embodiment can be guided along the vacuum strip (not shown in figures) until it is inserted under the pressing element 26.

During the entire process of joining the webs, the position of the leading end of the web 23, the angular arrangement of the holder unit 12a, 12b is controlled in order to synchronise the adhesive head 10 with the corresponding angular arrangement of the second reel 5b, 7b and more specifically with the leading end of the web 23 and the cutting unit 29. Knowing the position of the leading end of the web 23, it is possible to precisely apply the adhesive with adhesive head 10 to the beggining of the web 23 located on the second reel 5b, 7b while rotating it in the R2 direction. Furthermore, the position of the leading end of material web 23 and the moment of application of the adhesive are synchronised with the cutting unit 29, in order to cut off the web 2, 6 from the first reel of material 5a, 7a in such a place that the end of the taken web 24 overlaps with the beginning of the web 23 as shown in Fig 11. The distance over which the leading end of the web 23 should overlap the end of the taken web 24 should be substantially similar to the length of the applied adhesive path 36, preferably between 10 and 150 mm, most preferably 50-70 mm. The entire synchronisation process can be monitored and controlled by means of a controller or computer, for example.

It is also possible to synchronise the adhesive head 10 with the cutting unit 29 in order to cut the web 2, 6 at such a point, where the end 24 formed after cutting will overlap the adhesive path 36 applied anywhere on the outer peripheral surface 21 of the reel 5b, 7b.

Fig. 10 presents the changer 3, 4 in a side view while holding the leading end of the web 23 on the second reel 5b, 7b. In the side view, it can be seen that the holder 13b holds the leading end of the web 23 which is cut at an angle from the edge side 25 of the second reel 5b, 7b. The angle at which the leading end of the web 23 is cut may contain within the range of 15-60°, more preferably in the range of 30-45°.

When the two webs are glued together, the blocking element 22, e.g. blocking pin 30, is released and the holder unit 12b together with the holder 13b is withdrawn from its operating position in the T direction along the X axis, as shown in Fig. 11 in a side view. Alternatively, the holder 13b can be withdrawn from its operating position by performing a radial-longitudinal movement in the direction away from the X axis.

After the gluing process has been carried out, the material web 2, 6 is taken from the second reel 5b, 7b (Fig.11) and the core of the reel, on which the used material was wound, is removed from the mandrel 15a A material web 2, 6 is taken from the second reel 5b, 7b until a signal is received from the sensor 19 about material running out, after which the entire gluing process is repeated with another new material reel

List of reference numbers 37. claw

1 machine for manufacturing articles of A - direction of the web unwinding the tobacco industry Xa, Xb - mandrel axes

2 continuous material web S - reciprocating movement

3 filling material web changer CR - continuous rod

4. wrapper material web changer R - article of the tobacco industry

5a. first reel Ri - direction of rotation of disc

5b. second reel R2 - direction of rotation of the second reel

6. continuous material web R3 - direction of rotation of the second reel

7a. first reel R4- direction of rotation of the opening element

7b. second reel VL - linear velocity of the taken web of material

8. forming unit VR - rotational speed of the second reel

9. cutting head L - length of the unwound web of material

10. adhesive head U - protective layer section

11 . material of the tobacco industry T - direction of withdrawal of the holder to the

12a. holder unit operating position

12b. holder unit

13a. holder

13b. holder

14a. carrier element

14b carrier element

15a. mandrel

15b. mandrel

16a. disc

16b. disc

17a. spring element

17b. spring element

18a. positioning holes

18b. positioning holes

19 sensor

20 disc

21 outer peripheral surface of the reel

22 blocking element

23 leading end of material web

24 trailing end of taken web

25. edge of the reel

26. pressing element

27. mandrel drive

28. holder unit drive

29. cutting unit

30. blocking pin

31. positioning element

32. cooperating element

33. opening element

34. web protection layer

35. cutting head

36. adhesive path

Claims

Patent claims A web changer (3, 4) of tobacco industry material provided with a first mandrel (15a) of a first reel (5a, 7a) of tobacco industry material and a second mandrel (15b) of a second reel (5b, 7b) of tobacco industry material adapted so that they swap places between the first position and the second position during continuous feeding of the webs (2, 6) of material, the changer being provided with a holder unit (12b) adapted to hold a web of material on the second reel (5b, 7b) mounted on the second mandrel (15b) in the first position, a cutting head (29) adapted to cut a continuous web of material (2, 6) fed from the first reel (5a, 7a) mounted on the first mandrel (15a) in the first position, characterized in that the web changer (3,4) is also provided with an adhesive head (10) adapted to apply adhesive to a continuous web of material, a holder unit (12b) adapted for holding and releasing a continuous web of material of a second reel (5b, 7b) mounted on a mandrel (15b) in a second position, when the mandrel (15b) of the second reel (5b, 7b) rotates the second reel (5b, 7b) of material, wherein the cutting head (29), adhesive head (10) and holder unit (12a, 12b) are adjusted so that the application of the adhesive, the cutting of the continuous web of material (2, 6) fed from the first reel (5a, 7a), and the moving away the holder unit (12b) holding the web of material from the second reel (5b, 7b) mounted on the second mandrel (15b) are essentially carried out at the production speed of the continuous web (2, 6) feed. The web changer according to claim 1 , wherein it is provided with a pressing element (26) adapted to press the fed web of material from the first reel (5a, 7a) against the web of material from the second reel (5b, 7b). The web changer according to claim 1 or 2, wherein the cutting head (29) is adapted to cut a web of material of the first reel (5a, 7a) at an angle relative to the longitudinal axis of the continuous web of material (2, 6) fed from the first reel (5a, 7a). The web changer according to any of the claims 1 to 3, wherein the adhesive head (10) is adapted to apply adhesive to a continuous web of material on a second reel (5b, 7b) mounted to a second mandrel (15b) in a second position. The web changer according to any of claims 1 to 4, wherein it is provided with a second cutting head (35) adapted to cut a continuous web of material from the second reel of material (5b, 7b) at an angle relative to the longitudinal axis of the web of material when the second reel (5b, 7b) is mounted on a mandrel (15b) in the first position. The web changer according to any of claims 1 to 5, wherein the adhesive head (10) is provided with a set of sequential nozzles applying adhesive paths parallel to the longitudinal axis of the continuous web of material of the second reel (5b, 7b) with spacing in the axial direction of the web of material. The web changer according to claim 6, wherein the adhesive head (10) is adapted for sequential application of adhesive paths. The web changer according to any of claims 1 to 7, wherein the holder unit (12a, 12b) is provided with a cooperating element (32a, 32b) adapted to cooperate with a positioning element (31) fixing the carrier element (14a, 14b) in a fixed position. The web changer according to any of the claims 1 to 8, wherein it is provided with an adhesive head (10) adapted to apply adhesive to a continuous web of material on the second reel (5b, 7b) mounted on the second mandrel (15b) in the second position when the mandrel (15b) of the second reel of material (5b, 7b) rotates the second reel of material (5b, 7b) or at the end of the taken web (24) of the first reel (5a, 7a) mounted on the first mandrel (15a) in the first position when the mandrel (15a) of the first reel of material (5a, 7a) rotates the first reel of material (5a, 7a). The web changer according to any of claims from 1 to 9 wherein the cutting head (29), the adhesive head (10) and the holder unit (12a, 12b) are adapted so that the application of the adhesive, the cutting of the continuous web of material (2, 6) fed from the first reel (5a, 7a), the moving away the holder unit (12b) holding the web of material from the second reel (5b, 7b) mounted on the mandrel (15b) takes place, when the speed of the continuous web of material on the outer peripheral surface (21) of the second reel is equal to the speed of the feed of the web of material (2, 6) from the first reel (5a, 7a), and is in the range of 300 to 550 m/s, preferably in the range of 450 to 550 m/s. A method of splicing webs of tobacco industry material on a changer (3, 4) of a continuous web of tobacco industry material, wherein the beginning of the web of material (23) of the second reel (5b, 7b) is held by the holder (13b) characterised in that a second mandrel (15b) with a second reel (5b, 7b) of material together with a holder (13b) holding the beginning of the web of material (23) is spun, adhesive is applied to a continuous web of material, the holder (13b) holding the leading end of the web of material (23) is released, a continuous web of material (2, 6) is cut from the first reel of material (5a, 7a) on the first mandrel (15a), whereby the application of adhesive to the continuous web (2, 3), the cutting of the continuous web (2, 6) and the release of the holder (13b) holding the beginning of the web of material (23) are generally carried out at the production speed of the continuous web of material (2, 6) feed. The method according to claim 11 , wherein an adhesive is applied to a continuous web of material on the second reel (5b, 7b) in the area of the beginning of the web of material (23). The method according to claim 11 or 12, wherein the end of the taken web (24) of the first reel (5a, 7a) is pressed against the beginning of the web of material (23) of the second reel (5b, 7b). The method according to any of the claims 11 to 13, wherein the continuous web of material (2, 6) from the first reel of material (5a, 7a) on the first mandrel (15a) is cut at an angle to the longitudinal axis of the continuous web of material (2, 6) The method according to any of the claims 11 to 15, wherein the application of the adhesive, the cutting of the continuous web of material (2, 6) fed from the first reel (15b), the moving away the holder unit (12b) holding the web of material from the second reel (5b, 7b) mounted on the mandrel (15b) takes place, when the speed of the continuous web of material on the outer peripheral surface (21) of the second reel is equal to the speed of the feed of the web of material (2, 6) from the first reel (5a, 7a), and is in the range of 300 to 550 m/s, preferably in the range of 450 to 550 m/s.