DE2241776A1 - DEVICE FOR PROMOTING ARTICLES OF THE TOBACCO MANUFACTURING INDUSTRY - Google Patents

Description

WORKS KÖRBER & CO. KG. HAMBURG '2241776

Hamburg, August 21, 1972 Patent Ha / Ad

Stw.: Conveyor drum-suction trough-vacuum chamber-v.erengt Hauni file 1213

Device for conveying articles of the tobacco processing industry Industry

The invention relates to a device for conveying articles of the tobacco processing industry by means of a endlessly revolving conveyor from a feed conveyor to a discharge conveyor, the feed conveyor for holding the article Has recordings with channels for supplying holding air, which place with a vacuum chamber from a takeover in the area of the feeder. to a delivery point in Area of the discharge conveyor are connectable.

For promoting several consecutive articles on a conveyor, such as cigarettes, cigarillos, cigars, filters, wrapping material or tipping paper, are usually drums because of their space-saving design and because of their uniform peripheral speed used. Such drums are provided with receptacles for the articles to convey the articles, the recordings via suction air openings, holes and Control rings are connected to a suction air source, so that the articles are held in the receptacles during the conveyance by the suction air and are gently conveyed on can be. Such designs of conveyor drums are very reliable in promoting the'Article, " however, have wearing parts such as the control rings, which have to be replaced quite frequently, and are also relatively expensive to construct. Therefore conveyor drums were developed that also Recordings and suction air openings assigned to the recordings

409810/0166

Stw.: Conveyor romrael-suction cup-vacuum kairimer-narrowed Hamburg, August 21, 1972

for the item. The suction air openings are with connected to a vacuum chamber in the drum, the sicr, from a Ubernahrr.stelle in the area of a Zuförderera, where the articles are taken over by the feeder, bia to a delivery point in the area of a Abförderera is enough where the articles are handed over to the conveyor. The vacuum chamber has a constant cross-section between the transfer point and the delivery point and is through a channel, the one between the acceptance point and the delivery point opens into the vacuum chamber, connected to a hollow shaft which is connected to a suction air source. Of the The cross section of the vacuum chamber is several times larger than the cross sections of the suction air openings Recording.

Such drums have a very simple structure and also have practically no wearing parts but not one hundred percent reliable. In the tobacco processing factories it is common today that the processing machines are connected to a central suction air system. The processing machines are now in the evening run completely empty, so that no suction air opening is covered by an article, so it is when starting up It is not possible to hold the articles on the conveyor drum with the suction air, because all the suction air openings the atmospheric air pressure gets into the vacuum chamber, and thus an insufficiently high vacuum through the central suction air system, which provides a constant output can be built up in the vacuum chambers. Only when a plurality of recordings is filled and with it several suction air openings are covered, one will be sufficient high vacuum achieved in order to keep the articles securely in the receptacles. For this reason, the ma-

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3tw. : Conveyor drum-suction cup-vacuum chamber-narrowed Hamburg, August 21, 1972

machines started up one after the other, resulting in production losses leads. It is therefore not possible to start up all machines at the same time, as the articles from the Recordings fall out, and it is only possible for this reason. "Laschinen ir.it own suction air sources when empty approach, since side channel blowers on such machines are grown as suction air sources, their performance is very is much higher than the suction air power which is required during operation of the machine. This ensures that there is sufficient negative pressure at the suction air openings when the machine starts up.

The invention is therefore based on the object of developing a conveyor that securely holds the articles bein: starting of idle machines guaranteed and also has a simple structure and is as low-wear as possible.

The solution according to the invention is that an irit a suction air source connected supply line for holding air in an area assigned to the takeover point in the vacuum chamber flows out.

Since the same problem arises when the machine is emptied as when starting the machine, namely that the negative pressure in the negative pressure chamber is getting smaller because In the course of the promotion fewer and fewer channels are covered by articles lying in the receptacles, so that air atmospheric pressure reaches the vacuum chamber, opens according to a further characteristic of the invention with the suction air source connected supply line for 'hold air in an area assigned to the delivery point in the vacuum chamber, so that the articles when the

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BATH O.

22A1776

Stw.: Conveyor tube-suction trough-vacuum chamber-constricted Hamburg, August 21, 1972

Machine due to the negative pressure in the area of the delivery point being held. Because the vacuum chamber has two feed lines from the suction air source, the conveyor is absolutely reliable when starting up and emptying the machines. Ure when there are gaps in the article stream To prevent pressure fluctuations in the holding air at the article-bearing receptacles, according to a further Embodiment of the invention, the vacuum chamber has a smaller flow cross section than the supply line. By · this configuration, the supply line acts with its larger volume as an air reservoir and prevents a sudden Pressure drop in the vacuum chamber. According to an advantageous and space-saving embodiment of the invention the conveyor is designed as a hollow drum, the annular inner wall of which forms a boundary of the vacuum chamber. If articles have been sorted out due to a malfunction in front of the drum, a gap arises between the conveyed ones Articles so that channels of recordings on the drum are not covered. So that the articles on both sides the gap are nevertheless held securely in the receptacles of the drum, is according to a further characteristic of the invention the sum of the flow cross-sections of the channels of a receptacle to the flow cross-section of the vacuum chamber designed in such a way that if one or more consecutive recordings remain empty, articles are placed in subsequent or preceding ones Recordings are held by the holding air. According to a further embodiment of the invention, the Conveyor receptacles in the form of troughs for holding rod-shaped articles. According to a variant of the invention the feed conveyor is designed to convey the rod-shaped articles in the axial direction, and the articles are off the conveyor from the axial conveying direction into a transverse axial one

409810/0166

Stw .: conveyor drum-suction cup-vacuum chamber-narrowed Hamburg, August 21, 1972

Conveyor line can be transferred, including the recordings of the conveyor Brake means for positioning the articles which can be conveyed in the axial direction into the receptacles are assigned. According to a further variant of the invention, the conveyor has a receptacle for strip-shaped wrapping material formed cylindrical peripheral surface.

409810/0166

224177β

Stw .: i'ördertrommel-suction trough-vacuum chamber-narrowed Hamburg, August 21, 1972

The invention is based on exemplary embodiments under . Referring to the drawing explained in more detail. Show it:

Figure 1 is a filter attachment machine for the production of Filter cigarettes with conveyors for conveying

Articles,
FIG. 2 shows a transfer drum with a feed conveyor

and a conveyor,
FIG. 3 shows a section through the transfer drum shown in FIG. 2 along a cutting line

III - III,
FIG. 4 shows a transfer drum with a transfer of

a line machine and a conveyor, FIG. 5 shows a section through that shown in FIG

Deposit drum according to section line V-V, Figure 6 a covering paper drum with a cutting roller and a conveyor.

Figure 1 shows schematically a filter attachment machine from Type Γ4ΑΧ of the Hauni-Werke in Hamburg-Bergedorf. An endless one circulating conveyor in the form of a deposit drum 1 passes from a feed conveyor on a cigarette making machine rod-shaped articles in the form of cigarettes conveyed to two conveyors in the form of staggered drums 2, which disassemble the staggered cigarettes and in rows of two with a space between give the cigarettes to an assembly drum 5. Filter rods pass from a magazine 4 onto a tendon drum 6, two of which are arranged one behind the other Circular knives 7 cut into filter stoppers twice the usable length, on three arranged one behind the other Relay drums 8 in a row one behind the other Staggered stoppers, aligned in the same position by a sliding drum 9, by an intermediate drum 11 of an acceleration drum 12 supplied and from this Io the

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22A1776

Stw .: conveyor drum-suction cup-vacuum chamber-narrowed Hamburg, August 21, 1972

Gaps between the rows of cigarettes on the tromrcel 3 filed. The cigarette filter cigarette groups are pushed together so that they are axially tight lie close together. They are then transported by an endlessly revolving conveyor in the form of a transfer drum 13 accepted. A covering paper is fed from a covering paper reel 14 by means of a take-off roller 16, which is designed as a feed conveyor is, and peeled off a pressure roller 17, from a gluing device 18 glued and on an endlessly revolving conveyor in the form of a covering paper roller 19 from a Knife drum 21 cut. The cut covering sheets 20 (FIG. 2) are attached to the cigarette filter groups G attached to the transfer drum 13 and on a rolling drum 22 by means of a rolling hand 23 around the Cigarette filter groups G rolled around. The finished groups Double filter cigarettes are placed on a test drum checked and on a cutting drum 26 through center Cut through the filter plugs to make single-filter cigarettes assembled. A turning drum 27 turns a row of filter cigarettes and transfers them at the same time in the unwound row. The filter cigarettes pass through an intermediate drum 28 to a head scanning drum 29. A lay-up drum 31 places the filter cigarettes on a filing belt 32.

Figures 2 and 3 show the transfer drum Figure 1 on an enlarged scale, which is shown in the state of an almost empty filter attachment machine. The transfer drum 13 has troughs 33 designed as troughs 33 for receiving and conveying the cigarette filter groups G Recordings on. One trough 33 each is via channels in the form of four bores 34 with a vacuum chamber

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Stw .: conveyor drum-suction cup-vacuum chamber-narrowed Hamburg, August 2, 1997

36 connected. The sum of the flow is 3y.u-sections the bores 34 of a trough 33 for flow cut the vacuum chamber 36 designed such that when One or more consecutive hollows remain empty 33 cigarette filter groups G in downstream or upstream Wells 33 are held by the holding air. The vacuum chamber 36 is therefore designed as a narrow slot, its flow cross-section about the; Flow cross section corresponds to the four bores 34 of a trough 33, so that the vacuum chamber 36 has a high flow resistance having. The transfer drum 13 is a hollow drum 37 formed, which is rotatably mounted on bearings 39 on a stationary core 38. An inner wall 41 of the hollow drum

37 forms a limit for the vacuum chamber 36, the from a transfer point 42 in the area of the assembling drum 3, which serves as a feeder, up to a delivery point 43 in the area of the roller drum 22, which acts as a discharge conveyor serves, extends. The vacuum chamber 36 is connected to a pipe via feed lines in the form of channels 44 and 46 47 connected to a suction air source designed as a fan 48, the fan 48 always having a constant Suction power is designed to be emitting. In order to ensure that the cigarette filter groups G are held securely, open the channels 44 and 46 in the area of the transfer point 4 * 2 or the delivery point 43 in the vacuum chamber 36, so that is ensured by the high flow resistance in the vacuum chamber 36 that when starting or emptying the Machines there is a sufficiently high negative pressure at the bores 34, which open into troughs 33 occupied by groups G. This sufficiently high negative pressure is possible because the negative pressure chamber 36 is due to the high flow resistance acts like a labyrinth seal, so that by the free

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2241778

Stw .: -b'ördertromniel-suction troughs-vacuum chamber-narrows Hamburg, August 21, 1972

Balls 34 »3 ^U £ which do not have groups G on top, not so much air of atmospheric pressure can get into the vacuum chamber 36 in the area of the filled troughs 33 that the vacuum collapses in this area.

Mode of operation of the device in FIGS. 2 and 3: When a machine starts up, it is grounded on the assembly drum 3 cigarette filter groups G pushed together the takeover parts 42 taken over by the transfer drum 13. Since the channel 44 opens into the vacuum chamber -36 in the area of the transfer point 42 and due to the high flow resistance of the vacuum chamber 36, little air of atmospheric pressure in the area of the takeover arbor 42 sucks in, there is a sufficient negative pressure in this area, so that the groups G of the suction air into the Troughs 33 sucked out of the troughs of the collating drum 3 will. During the rotation of the hollow drum 37 around the core. 38 are the groups G by the suction air, which in the Bores 34 covered by the groups G and prevailing in the vacuum chamber 36 are held. Here the migrates Negative pressure with the first cigarette filter group G to Delivery point 43 with. Empty troughs in front of the first conveyed cigarette filter group therefore influence the holding air not for this group. When the machine is emptied, the same applies to the last supported group, the held by air sucked through the duct 46.

The device of Figures 4 and 5 differs from the device of Figures 2 and 3 in that the hollow drum is designed as a deposit drum, which is a cigarette rod machine as a feed conveyor and a discharge conveyor Has filing tape. All similar parts that those

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Stw .: Conveyor tronimel-suction cup-vacuum chamber-narrowed Hamburg, August 21, 1972

Corresponding to FIGS. 2 and 3 are provided with the same reference numerals, increased by 100, and are not explained further.

The hollow trowel 137 has, for one static article to be conveyed, in the form of a cigarette 151, Brenisir.ittel in the form of three bores 152, which are used to supply brake air. A further bore 153 is used to hold the cigarettes 151 in a predetermined position on the hollow drum 137, which is determined by a further braking means in the form of a stop 154, which is assigned to a recess 133. The stops 154 are alternately fastened in the troughs 133 at the end of the drum and in the drum mit * .e, seen in the direction of insertion according to arrow 156, so that the cigarettes 151 can be placed alternately in the troughs 133 on the front and rear part of the hollow drum 137. The hollow drum 137 is upstream of a knife device 157 of a cigarette rod machine, which cuts the cigarettes 151 from an endless rod. For the accelerated conveyance of the cigarettes 151 into the troughs 133 of the hollow drum 137, a feed conveyor for axial conveyance in the form of an eccentric 158 and a prism rail 159 as a guide for the cigarettes 151 are used can also be replaced by a chain-dotted conveyor belt. This is the case when filterless cigarettes are to be produced.

Operation of the apparatus according to FIGS 4 and 5: By the knife apparatus 157 are cut off from an endless cigarette 151 on a cigarette rod making machine strand generated by the eccentric 158 on the dovetail 159 in the troughs 133 of the Hohltronmel 137

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3tw. : Fördertronnrel-suction trough-vacuum chamber-constricted Hanburg, August 21, 1972

"are accelerated. Suction air flows through the bores 152, making a cigarette 151 abreast and slower is moved against the stop 154. The suction air flowing through the bores 153 makes the cigarette 151 held in the desired position in the trough 133. The promotion to the delivery point 143 corresponds to the promotion of groups G- in FIGS. 2 and 3.

The device in FIG. 6 differs from the device of Figures 2 and 3 in that the hollow drum is designed as a covering paper drum. All of the same kind Parts which correspond to those of FIGS. 2 and 3 are provided with the same reference numerals, increased by 200 and not further explained.

The recordings of the hollow drum 137 for cladding material sections in the form of tipping paper sheets 220 are formed by a smooth surface 266 that extends over the bores 234 is connected to the vacuum chamber 236.

The advantage of the invention is that when starting up and emptying of machines a safe holding of the articles on the conveyors is guaranteed, even if not all recordings of the sponsor are filled with articles. Another advantage of the invention is the reduction of the suction air requirement, since the vacuum chamber has a has high flow resistance. A third advantage of the invention is that the takeover of the article in the takeover area is made easier by the increased suction power in this area.

- patent claims -

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Claims (8)

3tw .: conveyor drum-suction cup-vacuum chamber-narrowed Hamburg, August 21, 1972 Hauni file 1213 PATENT CLAIMS Orrichtung for conveying articles of the tobacco processing industry Industry by means of an endlessly rotating conveyor from a feed conveyor to a discharge conveyor, the Conveyor to keep 'the article shots with channels to the Has supply of holding air, which is connected to a vacuum chamber from a transfer point in the area of the feed conveyor to a delivery point in the area of the discharge conveyor can be connected, characterized in that a supply line (44, 144, 244) for holding air in an area assigned to the transfer point (42, 142, 242) into the vacuum chamber (36, 136, 236) opens. 2. Apparatus according to claim 1, characterized in that a supply line connected to the suction air source (48, 148) (46, 146, 246) for holding air in an area assigned to the delivery point (43, 143, 243) into the vacuum chamber (36, 136, 236) opens. 3. Device according to claim 1 and / or 2, characterized in that that the vacuum chamber (36, 136, 236) has a smaller flow cross section than the supply line (42, 142, 242, 43, 143, 243). 4. Device according to one or more of claims 1 to 3, characterized in that the conveyor is a hollow one Drum (37, 137, 237) is formed, the annular inner wall (41, 141, 241) of which delimits the vacuum chamber (36, 136, 236). 5. Device according to one or more of the preceding claims, characterized in that the sum of the currents / »0981 0/0166 Stw.: Conveyor tube-suction trough-vacuum chamber-constricted Hamburg, August 21, 1972 tion cross-sections of the channels (34, 152, 153, 234) of a receptacle (33, 133, 266) to the flow cross section of the vacuum chamber (36, 136, 236) is designed in such a way that if one or more consecutive recordings remain empty (33, 133, 266) Article (G, 151, 220) in downstream or • upstream receptacles (33, 133, 266) of the holding air being held. 6. Device according to one or more of the preceding claims, characterized in that the conveyor (13, 101) has receptacles in the form of troughs (33, 133) for holding rod-shaped articles (G, 151). 7. Device according to one or more of the preceding Claims, characterized in that the feed conveyor (158) carries the rod-shaped articles (151) in the axial direction (156) is designed to convey and the articles (151) from the conveyor (1, 101) from the axial conveying direction (156) can be transferred in a transverse axial conveying direction, including the receptacles (133) of the conveyor (1, 101) braking means (152) for positioning the in the axial direction (156) in the receptacles (133) are assigned to conveyable articles (151). 8. Device according to one or more of claims 1 to 5, characterized in that the conveyor (19, 219) has a receptacle for strip-shaped wrapping material (20, 220) formed cylindrical circumferential surface_ (266> having. 4098 10/0166