DE9117035U1 - Device for conveying stickers - Google Patents

Description

Stw.: Apply PM stamps/8anderolen - separate sanderolizing machine "Körber file 2142 - Hamburg, February 15, 1995

^b Device for conveying stickers

The invention relates to a device for conveying stickers, in particular banderoles and/or stamps for cigarette packs according to the preamble of claim 1. IO

There are articles which are provided with stickers during their manufacture or packaging. Such articles are, for example, cigarette packets, the wrapper of which is sealed with an affixed tax stamp or band. Packets containing ^other packaging goods are also sealed with sealing stamps or bands if necessary or provided with stickers for other purposes.

In order to apply stamps to cigarette packets, it is known from US-PS 4,876,839 to separate the stickers one after the other from a sticker strip online, transfer them to a banderoling revolver, apply glue there and finally stick them onto successive cigarette packets. Each banderol holder is assigned a mechanically complex, cam-controlled gripper arrangement for grasping and temporarily holding the banderols in the holders. The position of the banderols on the circumference of the banderoling revolver and thus also their placement on the cigarette packets are based on this.

Way not to define exactly.
30

Another device for applying stamps to cigarette packets is known from US-PS 4,620,891. Here, the cigarettes are stacked ready in a pile, from the bottom of which they are removed one after the other by means of a transfer element and are transferred from this to a conveyor on which they are glued and which transfers them to a transfer conveyor.

Control: Apply PM stamps/banderoles - separate banding machine Körber file 214.2 - Hamburg, March 1, 1995

which positions the bands at the inlet of a push-in channel of a package revolver, in which they are picked up by the package to be banded. This device works discontinuously at an unsatisfactory performance level, and the positioning of the bands on the transfer conveyor and on the packages is not precisely defined. In addition, when the bands are transferred from the transfer element to the following conveyor, they are accelerated from a standstill to maximum conveyor speed by being carried along by radial stops, which can lead to damage or permanent deformation of the bands.

The aim of the present invention is to further improve a device of the type described above. In particular, the stickers should be applied to the articles (cigarette packets) in the correct size and position with high productivity and the lowest possible structural and mechanical effort.

This object is achieved in a device of the type mentioned at the outset by the characterizing features of claim 1. This design of the device enables the stickers to be positioned precisely on the transfer turret. This leads to a higher quality of the end product because the sticker can be applied to the object to be equipped with reproducible accuracy. The conditions for further processing of the sticker on the transfer turret, e.g. for gluing, are also improved by these measures.

Additional developments and advantageous embodiments of the invention are contained in the subclaims. Thus, the features of the embodiment of the transfer device

* Control: Apply PM stamps/banderoles - separate banding machine Körber file 2142."'- Hamburg, March 1, 1995

° volvers, which allows the exact positioning of the stickers on a stop, without hindering the continuous delivery of the stickers to the articles to be equipped and without having to make any effort to guide the stops without collision. The continuation of the invention according to claim 3 enables continuous operation of the device, which makes holding, stopping and acceleration phases superfluous and thus leads to higher productivity. Claim 4 relates to an advantageous design of the device with little mechanical effort. The horizontal movement of the separating element when removing the lowest sticker on the sticker stack according to claim 5 results in the sticker being pulled off, which ensures reliable separation. This avoids several stickers being removed at the same time, which then fall into an uncontrolled position in

^ remain in the device and hinder the next separation processes. The continuation of the invention according to claim 6 represents a particularly reliable sticker removal, because the bottom sticker is peeled off the stack by the rotating separation device, so to speak, while the other stickers in the stack retain their original orientation. When the cylinder surface section rolls off, the sticker adheres to it without permanent deformation and can be transferred to the intermediate conveyor in perfect condition. Claim 7 relates to a preferred embodiment of the holding means with which the stickers are held on the separation device. The feature of claim 8 provides a simple means which prevents the stacks held laterally in the magazine from bending and individual stickers from falling out downwards when the separation device has moved sideways under the stack to deliver a sticker to the intermediate conveyor. The features of claim 9 represent...sisse .bespn,de.c,s. ,preferred training for

Stw.: Apply PM stamps/banderoles - separate banding machine Körber file 21&Idigr;&Zgr; - Hamburg', March 1st' 1995

the rational use of the device to ensure high productivity". Here, two stacks of stickers and two separating devices are provided, each of which alternately conveys a sticker to the intermediate conveyor. Here, the respective return stroke phases of one separating device are used to remove and transfer a sticker to the other. This significantly increases the performance of the device. The device according to claim 10 ensures that the stickers are safely taken over by the separating device. The stickers are transported in a tied-up manner to the application point, where they are stuck onto the article to be equipped. They are held securely on the conveyor during transport. This enables the stickers to be portioned out precisely and protects them from deformation and damage. Claim 11 relates to a preferred design of the intermediate conveyor, which enables the stickers to be conveyed in a reliable tied-up manner. According to claims 12 and 13, the stickers are glued only shortly before they are transferred to the articles to be equipped on the transfer revolver, which makes it easier to transport the stickers through the device and to handle them. With the double glue

Stw.: Apply PM stamps/8anderolen - separate banding machine Körber file 2142 - Hamburg, February 15, 1995

^The application according to claim 13 results in optimal gluing both for the quick attachment and for the permanent bonding of the stickers on the articles to be decorated.

The device according to the invention offers the advantage of high productivity with a simple mechanical structure and low construction costs. The stickers are conveyed from the stack to the merging zone in a tied manner, so that the risk of uncontrolled movements, damage or deformation is low. The positioning ^of the stickers on stops on the transfer turret offers a good guarantee for the stickers being attached to the articles with precise dimensions and positions in a continuous process, whereby there is no risk of damage or permanent deformation due to the small difference in speed required between the intermediate conveyor and the transfer conveyor when positioning the stickers on the stops. By alternately removing the stickers from two stacks, the device achieves a very high level of performance without

which would have to be bought at a significantly higher cost. 25

Overall, the device according to the invention offers the possibility of producing flawless products with high efficiency and low technical effort and develops these advantages particularly when attaching tax stamps or banderoles to cigarette packets.

Stw.: Apply PM stamps/banderoles - separate 8anderoling machine Korber file 2142 - Hamburg, February 15, 1995

The invention will now be described in more detail with reference to the drawing. It shows

Figure 1 is a front view of an embodiment of a device position,

Device according to the invention in schematic representation

Figure 2 shows a section approximately along line 8-B of Figure

and 15

Figure 3 a simplified representation of the drive of the separating elements as view C-C of the figure

Stw,: PM-Marksn/Banderoles applied - separate banding machine Körber file 2142 - Hamburg, February 15, 1995

Figure 1 shows, as an embodiment of a device according to the invention, a front view of a device for applying stamps or bands 1 to cigarette packs 2, which are continuously transported at a predetermined distance on a pack conveyor in the direction of arrow 6 through a merging zone 4.

As the drawing shows, the device consists of a banderole magazine 7, which has two stacks of banderole 8a and 8b spaced apart from one another, a separating device

for removing individual banderoles from the banderoles stacks, an intermediate conveyor 11, onto which the banderoles removed from the stacks by the separating device 9 are transferred one after the other, and a transfer revolver 12, which transfers the banderoles one after the other from the intermediate conveyor into the

cleaning zone 4 and attaches them to the packs 2.

The stacks of sanderole 8a and 8b are located in the magazine 7 in vertical shafts 13, which are formed by U-shaped side walls 14 (see also Figure 2). To hold the stacks in the

Support wedges 16 are provided in the magazine shafts 13, which engage underneath the stacks 8a and 8b and of which the right and left outer ones can be moved sideways in order to release the bottommost 8th row for removal,

The separating device 9 has a carriage 17, which can be moved horizontally in the direction of arrow 18 in the area of the lower end of the sanderole stacks 8a and 8b by means of a drive (not shown). The carriage 17 carries two separating elements 21a and b that can be pivoted about pivot axes 19 and

in alignment with these separating elements sliding shoes 22. Each separating element 2,1 a and 2,1 b has a cylindrical surface concentric to the pivot axis 19, with which the

Stw.: Apply PM stamps/anderols - separate anderoling machine Körber file 2142 - Hamburg, February 15, 1995

and forward movements of the carriage 17 on the underside of the associated stack of banderoles 8a or 8b and which is designed as a banderole holder. In order to grasp and hold the banderoles on the cylinder surface section 23, this is assigned suction air openings 24, some of which are shown in the figure on the left separating element 21a. These suction air openings are connected in a known manner to a vacuum source via channels (not shown) running in the pivot axis 19 and the carriage 17 and a vacuum connection 26 as well as via flexible lines (not shown).

The carriage 17 can be moved back and forth in the direction of arrow 18 between two end positions for alternately removing bands from the underside of the two stacks 8a and 8b. One end position of the carriage is shown in Figure 1.

In this position, the separating element 21b is located below the associated stack of sanderols 8b and grasps the lowest band in the stack by means of a negative pressure applied to suction air openings (not shown). Meanwhile, the other separating element 21a is in its delivery position, in which it delivers a band taken from the stack 8a to the intermediate conveyor 11. By moving the carriage 17 to the left, it reaches its other end position, in which the separating element 21a is located under this stack to take over the lowest band of the stack 8a and the separating element 21b delivers the received band to the intermediate conveyor 11.

The intermediate conveyor 11 consists of a pair of belts made up of rotating suction belts 27 and 28, which are each in contact with one another on a conveyor run and thus form the conveying path of the other rollers. The suction belts are connected to suction rollers 29a and 29b or 31 and tensioning or reversing rollers 22j £ S.f*i51i r t. The suction rollers,

Stw.: Apply PM marks/banderoles - separate banderoling machine Körber file 2142 - Hamburg, February 15, 1395

whose structure is known in principle, are designed in the same way, so that the description of one such roller is sufficient. Each suction roller consists of a hollow cylinder rotating on a fixed bearing mandrel 33 with a vacuum connection 34 and a control slot 38 with suction air openings 37 in the cylinder jacket. Between the suction rollers 29a and 29b of the suction belt 27, an additional vacuum chamber 38 is arranged. The suction belt 37 is thus from the transfer part, where the banderoles are transferred from the separating device 21b to the intermediate conveyor, to the delivery point, where the intermediate conveyor

which delivers the banderoles to the following transfer turret 12, is subjected to negative pressure so that a safe conveyance of the banderoles is ensured. The suction belt 28 is only subjected to negative pressure by the suction roller 31 in the transfer area. The sanders 27 and

28 driven by a drive means not shown.

For the safe transfer of the banderoles from the separating devices 21a and 21b to the suction belts 28 and 27, pressure rollers 39 are provided, which are mounted on pivoting levers 41 and are

Springs 42 are pressed against the suction rollers 29a and 31 respectively.

The transfer turret 12 is also designed as a suction roller 44 rotating around a fixed bearing mandrel 43. The suction roller 44 has several sanderol receptacles 46 on its circumference.

which have a radially aligned stop surface 48 at the front in the conveying direction 47 and suction air openings 49 opening into the banderol receptacles 46. The stop surfaces 48 extend inwards from the peripheral surface of the suction roller and the support surfaces of the banderols in the receptacles 46 run towards the front ends of the receptacles in the conveying direction, forming a deep, radially curved recess inwards, with the fan:* the suction air openings 46a in Figure 1.

1 ·

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Stw.: Apply PM stamps/banderoles - separate SanderoLier device Korber file 2142 - Hamburg, February 15, 1995

° driven, 0the fixed bearing mandrel 43 of the transfer turret again has a vacuum feed 51 and a control slot 52 accompanying the conveying path of the banderoles.

^O A glue application device 53 is assigned to the transfer turret for applying glue to the ßanderoles. Glue application devices for this purpose are widely known, so that it is not necessary to describe the device 53 in more detail here.

When the carriage 17 of the separating device 9 moves back and forth between its end positions, the separating elements 21a and 21b are rotated back and forth between the take-over position, in which they take the lowest band from the band stack, to their transfer position, in which they deliver the received band to the intermediate conveyor. The drive of the separating elements required for this is coupled to the carriage movement. Figures 2 and 3 show that the axes 19 of the separating elements 21a and 21b are on

² ^ the rear of the carriage 17 each carry a drive roller 54 over which a belt 56 is guided. The belt is clamped between clamping jaws 57 and placed over an eccentric roller 58. The clamping jaws 57 and the eccentric roller 58 are connected to the machine frame 59. If the carriage 17 is now moved back and forth, the belt 56 held on the clamping jaws 57 generates a torque on the drive rollers 54 moved by the carriage, which is transmitted via the axes 19 to the separating elements 21a and 21b. The eccentric 58 is used to adjust the belt tension and the angular position of the separating elements.

In the position of the device shown in Figure 1

Stw.: Apply PM stamps/8anderolen - separate banding machine Körber file 2142 - Hamburg, February 15, 1995

the separating element 21b begins to rotate clockwise during the return stroke of the carriage 17 in the direction of the arrow 18 to the left, whereby its cylinder surface section 23 rolls along the underside of the stack 8b without sliding. Once a negative pressure is applied to the cylinder surface section 23 via suction air openings 24 (see illustration of the separating element 21a), the separating element 21b peels off the bottommost sheet of paper from the stack so that it comes into contact with the cylinder surface section 23. This peeling is facilitated by the fact that the cylinder surface section 23 in the area

^■5 its front side 23a is flattened so that it forms a flat surface 23b there. If the separating member 21b is rotated further clockwise from its position shown in Figure 1, the right edge section of the lowest banderol is bent sharply downwards, while the stack 8b is simultaneously slightly lifted by the edge 25 between the flat and the cylindrical section of the cylindrical surface section 23. This ensures that the banderols are removed safely from the stack. As the carriage continues to move to the left, the retracted support wedge 16 slides under the stack 8b, which is followed by the right sliding shoe 22 as the carriage continues to move, so that the banderol stack 8b is held in its position even when the separating member 21b is rotated away. The separating device 21b is moved with the carriage 17 to the left and rotated so that the front side 23a of the cylinder surface section 23 comes into the area of the associated pressure roller 39 (see Figure 2). This corresponds to the position of the left separating device 21a shown in Figure 1. In this position, in which the nose-like, flattened front side 23a of the cylinder surface section 23 extends to below the axis of the pressure roller 39 (see Figure 1, _{left separating device} 21a and Figure 2), the separating device 21b is moved to the left.

12
1

Stw,: Apply PM stamps/banderoles - separate banding machine Körber file 2142 - Hamburg, February 15, 1995

transferred to the suction conveyor 27 of the intermediate conveyor 11, which conveys them to the transfer turret 44 with the help of the applied negative pressure. According to the invention, the conveying speed of the intermediate conveyor 11 is higher than the conveying speed of the transfer turret 12, so that the banderol 1 is pushed against the stop surface 48 at the front end of the relevant band holder 46 during the transfer to the transfer turret. This ensures that the band is positioned exactly on the transfer turret. On the way from the intermediate conveyor to the unification zone 4, the banderol

in the area of the control slot 52 by means of negative pressure on the transfer turret. It is glued with the glue application device 53 and delivered in the transfer zone 4 to a cigarette pack 2, which is placed in the correct position and phase in

the unification zone 4 is promoted. 20

While the separating device 21b takes a banderole from the banderole stack 8b and moves it to the intermediate conveyor, the separating device 21a releases a picked-up banderole via the suction belt 28 to the intermediate conveyor and moves under

simultaneously turning back clockwise under the stack of bands 8a. To the same extent that the cylinder surface section 23 of the separating device 21a lies under the stack of bands 8a, the left sliding shoe 22 supporting the stack of bands 8a slides away from under the stack and releases

frees it for the removal of the lowest banderole. The next removal process begins as soon as the separating element 21a has reached its left end position, in which the stack has sunk to the flattened end section of the cylinder surface section, and the reverse rotation of the separating element

21a begins.

The described V%ijjrijch!iunq* s!kt"is|*primarily intended for

Control: Apply PM stamps/banderoles - separate banding machine Körber file 2142 - Hamburg, February 15, 1995

to apply tape rolls or stamps to cigarette packets. But it is of course also suitable for applying any other stickers to packets with other contents as well as to other objects, as long as these stickers are only in the

be treated as described. LO

Claims (14)

•&igr; Control: Applying PM stamps/banderoles - separate banding machine Körber file 2142 - Hamburg, 14 September 1995 File no.: 9 91 17 035.4 New protection claims 1. Device for conveying stickers, in particular banderoles and/or stamps for cigarette packets, from a sticker magazine holding a stack of stickers into a merging zone for transfer to articles to be provided with the stickers (cigarette packets) with a separating device for removing individual stickers from the underside of the stack and a device for the stickers to be into the unification zone, characterized in that the transfer turret (12) has receptacles (46) for the stickers and holding means (51, 52, 49) moved with the receptacles for holding the stickers (1), that the receptacles are limited in the conveying direction (47) by stops (48) and that a conveyor (11) is provided which grasps the stickers (1) on the transfer turret (12) on their surface opposite the support surface, the conveying speed of which is higher than that of the transfer turret (12). 2. Device according to claim 1, characterized in that the support surface of each sticker holder (46) of the transfer turret (.12) extends radially inwardly from the peripheral surface towards its front end in the conveying direction (47), forming an axially parallel recess, and is supported at the front in the recess on a substantially radially to the peripheral surface running stop surface (48). 30 3. Device according to claim 1 or 2, characterized in that drive means are provided which continuously drive the conveyor (11) and the transfer turret (12) at different speeds. 4. Device according to one of claims 1 to 3, characterized in that the transfer revolver (12) as a holding means for the stickers (4j .in ^&Bgr;&dgr;&Ggr;.&thgr;&iacgr;.&sfgr;&eegr;,.&agr;'^&Ggr;^&Agr;&ugr;&iacgr; taken (46) with a .- .15 Stw.: Apply PM stamps/Sanderols - separate banding machine Körber file 2142 - Hamburg, March 1, 1995 Reference number: G 91 17 035,4 ° has suction air openings (49) connectable to the vacuum source, 5. Device according to one of claims 1 to 4, characterized in that the separating device (9) has a carriage (17) that can be moved horizontally under the magazine (7), that at least one separating element (21a, b) is arranged on the carriage and that the separating element can be moved back and forth with the carriage between a removal position under the stack (Sa, b), in which it removes the bottommost sticker from the stack, and a delivery position in which it delivers the sticker (1) to the transfer turret (12). 6. Device according to claim 5, characterized in that the separating member (21a,b) is designed as a rotating body which can be rotated back and forth about a rotation axis (19) during the back and forth movement of the carriage, which has on its circumference a cylindrical surface section (23) which rolls on the underside of the stack (8a,b) during the movement of the carriage (17) as a receptacle for the stickers (1) and holding means (24) for grasping and Holding at least one end section of the lowest sticker in the stack, such that the sticker lies against the cylindrical surface section (23) rolling down the stack and is held there until dispensed. 7. Device according to one of claims 1 to 5, characterized characterized in that the separating member (21a,b) has suction air openings (24) in the cylinder surface section (23) that can be connected to a vacuum source as holding means for grasping and holding the stickers (1). 8. Device according to one of claims 5 to 7, characterized in that the carriage (17) in series with the separating member (21a,b) has sliding shoes which engage under the stacks (3a,b) Stw.: Apply PM stamps/banderoles - separate banderoling machine Körber file 2142""-■ Hamburg, March 1995 Act. : G91 17 035.4 (22) which, when the carriage is moved, are temporarily pushed under the stacks as supports instead of the separating elements. 9. Device according to one of claims 1 to 8, characterized in that the sticker magazine (7) contains two sticker stacks (8a, b) at a predetermined distance, that the separating device under the magazine (7) has a horizontally movable carriage ( ¹⁷ ) with two separating elements (21a, b) and that the carriage can be moved alternately into two reversing positions, in each of which one separating element for removing the lowest sticker (1) is located on the underside of a stack, while the other dispenses a sticker. 10. Device according to one of claims 1 to 9, characterized in that the conveyor (1) is designed as an intermediate conveyor which guides the stickers (1) from the separating device (9) to the transfer turret (12), which has at least one air-permeable conveyor guided via deflections (29a,b,31μ,32). conveyor belt (27,28) and means (34,36,38) for applying a negative pressure to the conveyor belt along the conveying path of the stickers (1). 11. Device according to claim 10, characterized in that the intermediate conveyor (11) consists of two circulating belt conveyors (27, 28) that are adjacent to one another and enclose the conveying path of the stickers (1) between them. 12. Device according to one of claims 7 to 11, characterized in that the cylinder surface section (23) has a flat, flattened portion (23b) in the end region (23a) which first peels off the bottommost band in the stack (8a,b). · Stw.: Apply PM stamps/banderoles - separate banderoling machine Körber file 2142" - Hamburg, March 1, 1995 Act. : G 91 17 035.4 13. Device according to one of claims 1 to 12, characterized in that the transfer turret (12) is assigned a glue application device (53) for applying glue to the stickers (1) before transfer to the articles (2) (cigarette packets) to be equipped with them. 14. Device according to claim 13, characterized in that the glue application device (53) has application means for applying a first application of glue and further application means for applying a second application of glue to different surface sections of the sticker.