Web exchange equipment for tobacco industry materials

Abstract

The web changer (3, 4) of tobacco industry material also comprises a gluing head (10) adapted for applying glue to a continuous web of material, and a holder unit (12b) adapted for holding and releasing a continuous web of material on a second reel (5b, 7b) mounted on a second axle (15b) in a second position when said second axle (15b) of said second reel (5b, 7b) rotates said second reel (5b, 7b) of material, and said cutting head the adhesive applying means (29), the gluing head (10) and the holder units (12a, 12b) are adjusted so that the application of adhesive, the cutting of the continuous web of material (2, 6) fed from a first reel (5a, 7a) and the detachment of the holder unit (12b) holding the web of material from the second reel (5b, 7b) mounted on the second mandrel (15b) are performed essentially at the production speed of the feeding of the continuous web (2, 6).

Description

[Technical field]

[0001] The object of the invention is a web exchange device for tobacco industry material. [Background technology]

[0002] The tobacco industry uses machines for producing filter or tobacco rods. Such machines form rods from a continuous web of filter material, either from a string of finite length segments or from fibers of a given length, which are then wrapped in a web of wrapping material. The continuous rod thus formed is then cut into single rods of a determined length.

[0003] To maintain the continuous production of tobacco products, it is necessary to ensure that the web of packaging material is supplied uninterrupted and that the web of material is quickly spliced. This is done, for example, by using a mechanism of a packaging material web changer, to which two reels of packaging material can be attached. In the course of production, the machine takes a continuous web of material from a first reel, while the second reel of material is in standby mode, waiting for the moment when the trailing end of the web of material from the first reel is spliced ​​to the leading end of the web of material on the second reel. The splicing of these two webs of material on the machine is usually done by mechanical embossing of the two ends of the overlapping web of material or by gluing them with a double-sided adhesive tape, which is usually applied to the leading end of the web of material wound on a new reel. Articles produced from a web containing such a material splice are considered defective and must be rejected from further production.

[0004] 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 where an appropriate length of the unwound material web is stored and allows the unwound material web to make the splice without stopping during the process of joining the webs. It is important that the splice is made in such a way that as little waste as possible is left on the reel, with the formation 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 is done without human intervention.

[0005] In the state of the art there are known methods and machines in the tobacco industry that use devices for joining material webs.

[0006] International publication WO 2015173275 discloses a method and a device for splicing material webs on a machine for manufacturing products of the tobacco industry. The machine is provided with a device for exchanging the material web wound on a reel with a cushioning material containing the material web. When a first web of material breaks, a second reel with a second web of material is waiting on the exchanging device. To merge the two webs, the feeding speed of the ending web into the machine is slowed down or stopped altogether in order to merge. The material web is then removed from the cushioning material in order to maintain the continuity of the manufacturing process.

[0007] Patent publication EP1389602B1 presents a device for joining two webs of tobacco industry material using a melting unit, moving them parallel to each other at the same linear speed. In this solution, the material web is unwound from a new reel parallel to the leading web of material. The process of joining the webs is based on embossing with the notched surface of the joining unit, while both webs are moving simultaneously at the same speed. After embossing, the leading web of material is cut off, as is the initial part of the new web. This part was unwound from the reel to match the speed at which the web is exhausted.

[0008] Patent publication EP1437055B1 presents a method and an apparatus for joining two webs of tobacco industry material with a double-sided adhesive tape. A piece of double-sided adhesive tape is inserted by a feeding device between the web of material that is exhausted and the web of new material. After joining the two webs of material, the end of the trailing web is cut off. Summary of the Invention [Problem to be solved by the invention]

[0009] Known solutions of the state of the art use methods of splicing continuous webs of tobacco industry material, where a significant amount of the web is cut off, which is pre-unwound from a reel during the splicing process in order to achieve speeds close to the feed rate of the exhausting material web, or there are splicing methods which require the rejection from the manufacture of articles made from strands of material containing such splices. In all known solutions there is a large waste of spliced ​​material or finished products manufactured from the material containing the points where the web is spliced.

[0010] No solution known in the state of the art solves the problem of splicing webs in a fully automated manner, without the need for additional containment cushioning, and whilst maintaining full production speed. [Means for solving the problem]

[0011] The essence of the invention is a web changer for tobacco industry material, comprising a first mandrel of a first reel of tobacco material and a second mandrel of a second reel of tobacco material, adapted to swap the positions of the first and second mandrels between a first and a second position during the continuous supply of the web of material. The web changer comprises a holder unit adapted to hold the web of material on the second reel mounted on the second mandrel in the first position, and a cutting head adapted to cut the continuous web of material supplied from the first reel mounted on the first mandrel in the first position. The web changer according to the invention is characterised in that it also comprises a gluing head adapted to apply glue to the continuous web of material, and a holder unit adapted to hold and release the continuous web of material on the second reel mounted on the second mandrel in the second position when the second mandrel of the second reel rotates the second reel of material. The cutting head, the bonding head and the holder unit are coordinated so that the application of adhesive, the cutting of the continuous web of material fed from the first reel, and the disengagement of the holder unit holding the web of material from the second reel mounted on the second mandrel are performed essentially at the production speed of the feed of the continuous web.

[0012] Advantageously, the changing device according to the invention is characterized in that it comprises a pressing member adapted to press the web of material supplied from the first reel against a web of material from the second reel.

[0013] Advantageously, the changing device 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 to the longitudinal axis of the continuous web of material delivered from the first reel.

[0014] Advantageously, the changing device according to the invention is characterised in that said gluing head is adapted to apply glue to a continuous web of material on a second reel mounted on a second mandrel in a second position.

[0015] Advantageously, the changing device according to the invention is characterised in that it comprises a second cutting head adapted to cut the continuous web of material from the second reel of material obliquely to the longitudinal axis of the web of material when the second reel is mounted on the mandrel in the first position.

[0016] Advantageously, the changing device according to the invention is characterised in that said gluing head is provided with a set of sequential nozzles spaced apart in the axial direction of the web of material for applying gluing paths parallel to the longitudinal axis of said continuous web of material on said second reel.

[0017] Advantageously, the changing device according to the invention is characterized in that said gluing head is adapted for sequential application of gluing paths.

[0018] Advantageously, the changing device according to the invention is characterized in that it has a gluing head adapted to dispense a fast-drying glue.

[0019] Advantageously, the changing device according to the invention is characterized in that said holder unit comprises a cooperating member adapted to cooperate with a positioning member for fixing the carrier member in a fixed position.

[0020] Advantageously, the changing device according to the invention is characterized in that it comprises a gluing head adapted to apply glue to the continuous web of material on the second reel mounted on the second mandrel in the second position when the second mandrel of the second reel of material rotates the second reel of material, or adapted to apply glue to an end of the harvested web of the first reel mounted on the first mandrel in the first position when the first mandrel of the first reel of material rotates the first reel of material.

[0021] Advantageously, the changing device according to the invention is characterized in that the cutting head, the gluing head and the holder unit are adapted to apply the glue, to cut the continuous web of material supplied from the first reel and to detach the holder unit holding the web of material from the second reel mounted on the second mandrel when the speed of the continuous web on the outer circumferential surface of the second reel is equal to the speed of supply 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.

[0022] Furthermore, the subject of the invention is a method for splicing a web of tobacco material on a continuous web exchanger, the start of the web of material on the second reel being held by a holder. The method according to the invention is characterized in that a second mandrel carrying a second reel of material is spun together with the holder holding the start of the web of material, adhesive is applied to the continuous web of material, the holder holding the start of said web of material is released and 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 said continuous web and the release of the holder holding the start of said web are generally performed at the production speed of the supply of the continuous web of material.

[0023] Advantageously, the method according to the invention is characterized by the fact that adhesive is applied to the continuous web of material on said second reel in the region of the start of said web of material.

[0024] Advantageously, the method according to the invention is characterized by pressing the end of the web taken from said first reel against the start of said web of material on said second reel.

[0025] 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 obliquely relative to a longitudinal axis of the continuous web of material.

[0026] Advantageously, the method according to the invention is characterised in that the application of adhesive, the cutting of the continuous web of material fed from the first reel and the detachment of the holder unit holding the web of material from the second reel mounted on the second mandrel are carried out when the speed of the continuous web on the outer circumferential surface of the second reel is equal to the speed of feeding of the web of material from the first reel and is in the range of 300-550 m / s, preferably in the range of 450-550 m / s. Effect of the Invention

[0027] The object of the present invention is to ensure that two material webs are joined at full production speed in a fully automated manner, without the need to apply containment cushioning of the material webs.

[0028] Advantageous embodiments of the subject matter of the invention are illustrated in greater detail in the following drawings. [Brief description of the drawings]

[0029] [Figure 1] A machine for producing tobacco articles from a continuous web of material having two exchangers is presented. [Diagram 2] In a second embodiment, a machine for producing tobacco industry articles with one web exchanger is presented. [Diagram 3] A tobacco industry web exchange device for tobacco industry materials with a holder unit is presented. [Figure 4] A web changer for tobacco industry material during unwinding of a protective layer from a second reel is presented. [Diagram 5] A web exchange device for tobacco industry material during cutting of the protective layer from the second reel is presented. [Figure 6] An apparatus for changing a web of tobacco industry material during winding of the web on a second reel is presented. [Figure 7] A web changer for tobacco industry material is presented, holding the beginning of the web of the second reel. [Figure 8]1 shows a first embodiment of an apparatus for exchanging webs of tobacco industry material during the process of splicing the webs; [Figure 9] 2 shows a second embodiment of an apparatus for exchanging webs of tobacco industry material during the process of splicing the webs. [Figure 10] 1 shows a side view of a web exchanger for tobacco industry material during the process of joining the webs. [Figure 11] A web exchange device for tobacco industry materials after the web joining process is presented. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] FIG. 1 presents a machine 1 for producing tobacco articles R from a continuous web of material 2. The machine 1 in this embodiment has two material web exchangers 3 and 4. The web exchanger 3 is arranged to feed a continuous web 2 of tobacco industry material from reels 5a and 5b, while the web exchanger 4 is arranged to feed a continuous web 6 of packaging material from reels 7a and 7b. The continuous web 2 of tobacco industry material can 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 fed to the machine 1 in the form of reels 5a and 5b, from which it is continuously unwound and subjected to further processes on the machine. After a continuous rod CR has been preformed from the material web 2 in a forming unit 8, the preformed continuous rod is wrapped with a web of packaging material 6. The continuous rod CR thus formed is then cut into rods of predetermined length by a cutting head 9 to form the tobacco industry article R.

[0031] To ensure uninterrupted production, additional second reels 5b and 7b are arranged on the web changers 3 and 4, which wait until the material on the first reels 5a and 7a, respectively, is used in the production process. When the first reels 5a, 7a run out of material, the web changers 3, 4 exchange the position of the reel 5a with that of the reel 5b and the position of the reel 7a with that of the reel 7b in order to connect the rear 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 at the same time to connect the rear 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 material webs is carried out by applying a gluing path by the gluing head 10 to the leading end of the material web on the second reel 5b, 7b and pressing it against the gluing path of the web of material 2, 6 that is depleted on the first reel 5a, 7a. The bonding head 10 can be in the form of a nozzle, roller, or any other member that applies a layer of adhesive to a continuous web of material.

[0032] Figure 2 shows a machine 1 for manufacturing tobacco articles with one web exchanger 4 in a second embodiment. The machine 1 is adapted to manufacture 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, a material of plant origin, a material of organic origin, a material of inorganic origin or other materials not mentioned but approved for use in the tobacco industry. The joining method of the material web from the reel 7a with the material web on the reel 7b is similar to the first embodiment shown in Figure 1.

[0033] FIG. 3 presents a material web exchanger 3, 4 with holder units 12a, 12b arranged to hold the ends of a material web wound by holders 13a, 13b on a reel (not shown). The holders 13a, 13b are mounted to rotate and swing on carrier members 14a, 14b. The swinging movement of the holders 13a, 13b in this embodiment is forced by spring members 17a, 17b and by positioning members 31. The carrier members 14a, 14b together with the disks 16a, 16b are pivoted about the Xa, Xb axes of the mandrels 15a, 15b, on which the reels with the wound webs of material are fitted. The disks 16a, 16b have circumferentially arranged positioning holes 18a, 18b so that the position of the holders 13a, 13b can be adjusted and are accordingly locked relative to the mandrels 15a, 15b and thus relative to the start 23 of the web of material located on the reels. Each of the mandrels 15a, 15b has its own drive (FIGS. 10-11) to effect rotational movement of the reel with material. Furthermore, each holder unit 12a, 12b may have its own independent drive capable of effecting rotational movement of the holder unit 12a, 12b around the mandrel 15a, 15b and movement along the Xa, Xb axes of the mandrel 15a, 15b.

[0034] FIG. 4 shows a web exchange device 3, 4 during production, while unwinding a protective layer 34 web of material web from a second reel 5b, 7b. The web of material in this embodiment can be a web of packaging material, a web of filter material or any other web of material in the form of a web wound on a reel and approved for use in the tobacco industry. During the production process, a web of material 2, 6 is taken from a first reel 5a, 7a attached to a mandrel 15a. At this time, a reel 5b, 7b with a new web of material is fitted onto the mandrel 15b. The tobacco industry typically uses reels that have at least one protective layer 34 of the web on their outer circumferential surface. The protective layer 34 of the web must be removed from the reel before carrying out the splicing process. If the reel of material does not have a protective layer 34, at least one layer of the web, which may have been damaged or contaminated during transport, for example, must be removed in order to maintain the required quality of the manufactured product. Once the second reel 5b, 7b is fitted on the mandrel 15b, the holder unit 12b moves into the waiting position and the holder 13b moves away from the second reel 5b, 7b. The swinging movement of the holder 13a, 13b in the direction away from the mandrel 15a, 15b is forced by the positioning member 31, which performs a reciprocating movement S towards the holder unit 12a, 12b and in particular moves to the opposite side of the holder unit 13a, 13b towards the cooperating member 32a, 32b located at the other end of the holder unit 12a, 12b. 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 the reel opening member 33. The opening member 33 can be made, for example, in the form of a rotating arm, at the end of which there is a claw 37 which grips the beginning of the protective layer 34 of the material web on the reel. It is also possible to have an opening member 33 in the form of a holder placed on a stretching arm which grabs the beginning of the protective layer 34 of the web and moves it away from the reel, at the same time unwinding the protective layer from the reel.

[0035] Once the second reel 5b, 7b is fitted on the mandrel 15b, the second reel 5b, 7b performs a rotational movement R2 about the mandrel 15b until the claws 37 grip the beginning of the web of material wound on the second reel 5b, 7b. The opening member 33 then performs a swinging movement in the direction R4 until it reaches the position shown by the dotted line in FIG. 4. In the illustrated diagram, the proportions of the sizes of the individual elements may not be observed, so that the distance over which the opening member 33 performs its swinging movement to unwind the protective layer may not generally correspond to the length of the part to be cut. While performing its rotational movement, this opening member 33 simultaneously unwinds the protective layer 34 of material, as shown in FIG. 5. It is also possible to use reels which, for example, unwind the protective layer from the second reel 5b, 7b until the entire protective layer web is unwound. The unwound part U of the protective layer 34 of material is then cut by the cutting head 35. Once the protective layer 34 of material has been cut, it is discarded, but the remainder of the material web, which is unwound from the reels and suitable for further use in production, is wound onto the reels 5b, 7b by rotating the reels 5b, 7b in the direction indicated by the arrow R3, as shown in Figure 6.

[0036] Since the location of the cut with the cutting head 35 is known and the length L of the unwound web of material remaining after the protective layer 34 has been cut is known, it is known how many revolutions or angles of the second reel 5b, 7b are required 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 member 31 releases the cooperating member 32b of the unit 12b, which causes the holder 13b to swing in a direction towards the holder peripheral surface 21 of the second reel 5b, 7b as shown in FIG.

[0037] After receiving a signal from the sensor 19 regarding the end of the material web 2, 6 on the first roll 5a, 7a, the disk 20 of the material web changer 3, 4 performs a rotational movement together with the reels 5a, 5b, 7a, 7b of material in the direction indicated by the arrow R1, changing their position from the first position to the second position and adopting the setting shown in FIG. 8. This causes the mandrels 15a and 15b to be interchanged, with the mandrel 15a moving to the first position and the mandrel 15b moving to the second position. The first position of the mandrels 15a, 15b is understood to be when the unwinding of the web of material from the reels 5a, 5b, 7a, 7b is finished, the central part of the reel with the used material on the mandrel is removed and the full reel 5a, 5b, 7a, 7b of the continuous web of material is loaded. In an alternative embodiment, the first position can be divided into several intermediate positions. The second position of the mandrels 15a, 15b is understood to be the position in which the continuous web of material held by the holder units 12a, 12b is released. In Fig. 7 the mandrel 15a is in the second position and the mandrel 15b is in the first position, while in Fig. 8 the mandrel 15b is in the second position and the mandrel 15a is in the first position. During rotation of the disk 20 the start 23 of the web located on the outer circumferential surface 21 of the second reel 5b, 7b is held by the holder 13. This holding may involve holding the start of the web 23 on both sides thereof or pressing the start of the web 23 with the holder 13 against the outer peripheral surface 21 of the second reel 5b, 7b to prevent the web of material from unwinding from the second reel 5b, 7b when changing the position of the disk 20 from the first position to the second position and when accelerating the second reel 5b, 7b to keep the start of the web 23 in a constant position relative to the second reel 5b, 7b.

[0038] The position of the start 23 of the web of material may be controlled, for example by a servo motor controller and drive, so that the position of the angular position of the start 23 of the web of material on the peripheral surface 21 of the reels 5b, 7b is known.

[0039] Before starting the process of changing the position of the disk 20 from the first position to the second position, the second reel 5b, 7b is put into rotation about the axis Xb of the spindle 15b in the direction R2, along the direction A of unwinding the web 2, 6 from the first reel 5a, 7a. Together with the second reel 5b, 7b, the holder unit 12b with the holder 13b is put into rotational motion. In this position, the holder unit 12b moves towards the second reel 5b, 7b and positions it in conjunction with a block member 22 (not shown), which cooperates with a positioning hole 18b located on the disk 16b. This positioning consists in adjusting the holder unit 12b so that the position of the holder 13b coincides with the position 23 of the web tip, i.e. so that the holder 13b is located at the same place as the web tip 23 on the outer circumferential surface of the reels 5b, 7b. The blocking member 22 may be a blocking pin cooperating with positioning holes 18a, 18b in the disks 16a, 16b, or an electromagnet, a gearbox, an electronic lock of the synchronized drive 27 of the axles 15a, 15b and the drive 28 of the holder units 12a, 12b, or any other solution making it possible to temporarily maintain a constant position of the holders 13a, 13b relative to the leading edge 23 of the web.

[0040] After the position of the disk 20 is changed to the position shown in FIG. 8, the material webs 2, 6 are taken from the first reels 5a, 7a while moving along the outer peripheral surface 21 of the second reels 5b, 7b, and the rotation speed is V R The rotational speed V of the second reel 5b, 7b measured at its circumference is equal to R is the linear velocity V of the material web 2, 6 taken along the portion where the material web 2, 6 is displaced and comes into contact with the outer peripheral surface 21 of the second reel 5b, 7b. L Due to the fact that both speeds are substantially equal, slippage between the material webs 2, 6 and the outer peripheral surface 21 is minimized or completely eliminated. With little or no slippage, the material webs 2, 6 can move safely together with the holders 13a, 13b holding the leading edge 23 of the web and remain in contact with its outer surface.

[0041] Linear speed V of the continuous web 2, 6 of collected material L essentially corresponds to the production speed of the supply of the continuous webs 2, 6 of material and therefore to the production speed of the machine 1. For process reasons, the production speed of the machine 1 may vary temporarily, but is generally expected to be as high as possible or to achieve maximum production efficiency.

[0042] The production speed is between 300 and 550 m / s, preferably between 450 and 550 m / s. After receiving a signal from the sensor 19 about the approaching end of the material web 2, 6 on the first reel 5a, 7a, the taken web 2, 6 is cut off from the first reel 5a, 7a by the cutting unit 29 and a gluing path 36 is applied to the outer surface 21 of the second reel 5b, 7b by the gluing head 10 in order to glue the end 24 of the taken web 2, 6 to the leading edge 23 of the material web on the second reel 5b, 7b. In the gluing process, a fast-drying glue must be used, which allows the gluing process to be carried out in a very short time. The leading edge 23 of the material web is cut at an angle (shown in Fig. 10) so that the gluing head 10 can apply glue from several holes, for example with a time offset, so that the position of glue application is as close as possible to the edge of the starting point 23 of the web. It is also possible to position the adhesive head 10 at an angle substantially similar to the angle of the cut edge of the leading edge 23 of the web relative to the edge 25 of the second reel 5b, 7b. This arrangement of the adhesive head 10 allows adhesive to be dispensed from each hole simultaneously.

[0043] Optimally, the gluing path 36 is provided at a distance of about 2-10 mm from the beginning 23 of the web 23 and has a length of 10-150 mm, preferably 50 mm. After gluing the ends 24 of the harvested webs 2, 6, it is also possible to press the area where the webs are to be joined, for example by means of a pressing element 26. The pressing element 26 is, for example, a bar, roller or roller set as shown in the figures.

[0044] Alternatively, the bonding head 10 may apply adhesive to the edge 24 of the web taken from the side pressed against the start 23 of the web located on the reel 5b, 7b, as shown in Figure 9. In this embodiment, the edge 24 of the web taken may be guided along a vacuum strip (not shown) until it is inserted under the press member 26.

[0045] During the entire process of joining the webs, the position of the web leading edge 23, the angular arrangement of the holder units 12a, 12b are controlled in order to synchronize the gluing head 10 with the corresponding angular arrangement of the second reel 5b, 7b, more specifically with the web leading edge 23 and the cutting unit 29. Knowing the position of the web leading edge 23 allows the gluing head 10 to precisely apply glue to the web starting point 23 located on the second reel 5b, 7b while rotating at R2. Furthermore, the position of the material web leading edge 23 and the application moment of glue are synchronized with the cutting unit 29 in order to cut the webs 2, 6 from the material of the first reel 5a, 7a, at a place where the harvested web end 24 overlaps the web starting point 23, as shown in FIG. 11. The distance by which the web leading edge 23 should overlap the harvested web end 24 should be substantially similar to the length of the applied glue path 36, preferably between 10 and 150 mm, most preferably between 50 and 70 mm. The entire synchronization process can be monitored and controlled using, for example, a controller or computer.

[0046] It is also possible to synchronize the gluing head 10 and the cutting unit 29 in order to cut the webs 2, 6 at such points, but in this case the end 24 formed after cutting will overlap with the glue path 36 applied at any point on the outer peripheral surface 21 of the reels 5b, 7b.

[0047] 10 presents the changer 3, 4 in a side view with the web leading edge 23 held on the second reel 5b, 7b. In the side view, it can be seen that the holder 13b holds the web leading edge 23 that has been cut obliquely from the edge side 25 of the second reel 5b, 7b. The angle at which the web leading edge 23 is cut may be comprised within the range of 15° to 60°, more preferably within the range of 30° to 45°.

[0048] Once the two webs are attached, the blocking member 22, such as the blocking pin 30, is released and the holder unit 12b together with the holder 13b is withdrawn from its working position in the direction T along the X-axis, as shown in side view in Figure 11. Alternatively, the holder 13b can be withdrawn from its working position by making a radial-longitudinal movement away from the X-axis.

[0049] After the gluing process has taken place, the material web 2, 6 is removed from the second reel 5b, 7b (FIG. 11) and the reel core with the used material wound on it is removed from the mandrel 15a. The material web 2, 6 is removed from the second reel 5b, 7b until a signal is received from the sensor 19 that the material is depleted, after which the entire gluing process is repeated with another new reel of material. [Explanation of symbols]

[0050] 1. Machinery for the manufacture of tobacco industry products 2. Continuous material web 3 Filling material web exchange device 4 Packaging material web changer 5a 1st reel 5b Second Reel 6 Continuous material web 7a 1st reel 7b Second Reel 8. Formation Unit 9 Cutting Head 10 Adhesive Head 11 Tobacco Industry Materials 12a Holder unit 12b Holder unit 13a Holder 13b Holder 14a Carrier member 14b Carrier member 15a Mandrel 15b Mandrel 16a Disc 16b disk 17a Spring member 17b Spring member 18a Positioning hole 18b Positioning hole 19 Sensors 20 Disc 21 Reel outer surface 22 Block material 23 Material web tip 24 Rear end of harvested web 25 Edge of reel 26 Press parts 27 Axle drive unit 28 Holder unit drive device 29 Cutting unit 30 Block Pin 31 Positioning member 32 Co-operating parts 33 Opening material 34 Web Protection Layer 35 Cutting Head 36 Adhesion Pathway 37 Claws A Web rewind direction Xa, Xb shaft axis S reciprocating motion CR Continuous Rod R Tobacco industry products R1 Disc Rotation Direction R2 Second reel spin direction R3 Second reel spin direction Rotation direction of R4 opening material V L Linear speed of collected web V R Second reel spin speed L Length of the unwound material web U Protective layer part Pulling direction of the T holder to the operating position

Claims

1. A web exchanger (3, 4) for tobacco industry material, comprising: The web exchange device 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, wherein the positions of said first mandrel (15a) and said second mandrel (15b) are interchanged between a first position and a second position during the continuous supply of the web (2, 6) of material, The web exchange device a holder unit (12b) adapted to hold a web of material on said second reel (5b, 7b) mounted on said second mandrel (15b) in said first position; a cutting head (29) adapted to cut a continuous web (2, 6) of material supplied from said first reel (5 a, 7 a) mounted on said first mandrel (15 a) in said first position, The web exchange device a bonding head (10) adapted to apply adhesive to a continuous web of material; a holder unit (12b) adapted to hold and release a continuous web of material on said second reel (5b, 7b) attached to said second axle (15b) in said second position when said second axle (15b) of said second reel (5b, 7b) rotates said second reel (5b, 7b) of material; 1. A web changing device comprising: a cutting head (29), a gluing head (10) and a holder unit (12a, 12b) adapted to apply adhesive, cut the continuous web (2, 6) of material fed from the first reel (5a, 7a), and release the holder unit (12b) holding the web of material from the second reel (5b, 7b) mounted on the second mandrel (15b) at a production speed of the feed of the continuous web (2, 6).

2. 2. A web exchange device according to claim 1, further comprising a press member (26) adapted to press the web of material supplied from the first reel (5a, 7a) against the web of material from the second reel (5b, 7b).

3. 3. A web changing device according to claim 1 or claim 2, wherein the cutting head (29) is adapted to cut the web of material of the first reel (5a, 7a) obliquely to the longitudinal axis of the continuous web of material (2, 6) supplied from the first reel (5a, 7a).

4. 4. A web changing device according to claim 3, wherein the gluing head (10) is adapted to apply adhesive to a continuous web of material on a second reel (5b, 7b) mounted on a second mandrel (15b) at a second location.

5. 5. A web changing device according to claim 4, comprising a second cutting head (35) adapted to cut the continuous web of material from the second reel (5b, 7b) of material obliquely to the longitudinal axis of said web of material when said second reel (5b, 7b) is mounted on the mandrel (15b) in said first position.

6. 6. A web changing device according to claim 5, wherein the gluing head (10) is provided with a set of sequential nozzles spaced apart in the axial direction of the web of material for applying gluing paths parallel to the longitudinal axis of the continuous web of material on the second reel (5b, 7b).

7. 7. A web changing device according to claim 6, wherein the gluing head (10) is adapted for sequential application of glue paths.

8. 8. A web changing device according to claim 7, wherein the holder units (12a, 12b) comprise cooperating members (32a, 32b) adapted to cooperate with positioning members (31) for fixing the carrier members (14a, 14b) in a fixed position.

9. when the second axle (15b) of the second reel (5b, 7b) of material rotates the second reel (5b, 7b) of material, adhesive is applied to the continuous web of material on the second reel (5b, 7b) mounted on the second axle (15b) in the second position; or 9. A web changing device according to claim 8, comprising a gluing head (10) adapted to apply glue to an end of the harvested web (24) of the first reel (5a, 7a) mounted on the first axle (15a) of the first reel (5a, 7a) of material in the first position when the first axle (15a) of the first reel (5a, 7a) of material rotates the first reel (5a, 7a) of material.

10. 10. A web changing device according to claim 9, wherein the cutting head (29), the gluing head (10) and the holder units (12a, 12b) are adapted to apply adhesive, cut the continuous web (2, 6) of material fed from the first reel (5a, 7a), and release the holder unit (12b) holding the web of material from the second reel (5b, 7b) attached to the second mandrel (15b) when the speed of the continuous web on the outer circumferential surface (21) of the second reel (5a, 7a) is equal to the speed of feeding the continuous web (2, 6) of material 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.

11. 1. A method for joining webs of tobacco industry material on a device (3, 4) for changing continuous webs of tobacco industry material, comprising: A method of joining webs, wherein the start (23) of the web of material on the second reel (5b, 7b) is held by a holder (13b), a second mandrel (15b) is spun, carrying a second reel (5b) of material, with a holder (13b) holding the second reel (5b), the start (23) of the web of said material (7b); an adhesive is applied to a continuous web of material; the holder (13b) holding the leading edge (23) of the web of material is released; a continuous web of material (2, 6) is cut from a first reel of material (5a, 7a) on a first mandrel (15a); 1. A method of joining webs, characterized in that the application of adhesive to the continuous webs (2, 3), the cutting of the continuous webs (2, 6) and the release of the holder (13b) holding the start (23) of the web of material are generally carried out at the production speed of the supply of the continuous webs (2, 6) of material.

12. 12. A method according to claim 11, wherein adhesive is applied to the continuous web of material on the second reel (5b, 7b) in the region of the start (23) of the web of material.

13. 13. A method according to claim 11 or claim 12, wherein the end (24) of the collected web of the first reel (5a, 7a) is pressed against the start (23) of the web of material of the second reel (5b, 7b).

14. 14. The method of claim 13, wherein the continuous web of material (2, 6) from the first reel of material (5a, 7a) on the first mandrel (15a) is cut obliquely relative to a longitudinal axis of the continuous web of material (2, 6).

15. 15. The method according to claim 14, wherein the application of adhesive, the cutting of the continuous web of material (2, 6) fed from the first reel (5a, 7a) and the detachment of the holder unit (12b) holding the web of material from the second reel (5b, 7b) attached to the second mandrel (15b) are carried out when the speed of the continuous web on the outer circumferential surface (21) of the second reel is equal to the speed of feeding 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.

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