DE2145375A1 - METHOD AND DEVICE FOR MANUFACTURING COMBINATION FILTER RODS OF THE TOBACCO-PROCESSING INDUSTRY - Google Patents

Description

Stw .: Combination filter-glass fiber disc-strand process process and apparatus for making combination filter rods of the tobacco processors Industry The invention relates to a method of making combination filter rods the tobacco processing industry, consisting of pilter stoppers of a first filter material and thin disks, especially made of a relatively soft, fibrous, second sheet material existing filter discs, with the filter plugs spaced apart from one another a wrapping material are brought and conveyed axially and in the spaces between The disks are inserted into the filter plug, whereupon BilterstopSen and disks enveloped by the wrapping material and formed into an endless strand, which then is separated into individual combination filter rods.

The invention also relates to an apparatus for producing Combination filter rods of the tobacco processing industry, consisting of filter plugs a first filter material and thin discs, especially made of relatively soft, fibrous, second filter material existing Bilterscheibohen, with a steadily Drivable first feed conveyor for 2 filter plugs, a second continuously drivable Feed conveyor for feeding wrapping material, a third continuously drivable feed conveyor for feeding the filter discs, as well as a format in which the wrapping material is around The filter plug and filter disc is shaped so that an endless strand is created, and a downstream cutting device for cutting the end strand into individual combination filters.

There are already numerous embodiments in the cigarette industry of combination filters to reduce nicotine and / or harmful components of tobacco smoke known, in which by combining two types of filter Stw .: Eombinat ion sf ilter-Gla sÎa sersche - ibe -trangverfare n -a reinforced Filter effect is to be achieved. They are combinations of acetate filter plugs with granules (e.g. activated charcoal) and acetate filter stoppers with activated charcoal as effective Filter plugs containing filter material are known.

In more recent times, the use of relatively thin disk reams has emerged fibrous material, e.g. made of glass fiber, with or without chemical additives as a filter Tried and tested in connection with conventional filter plugs, e.g. made of acetate threads. Such disks have been found to be surprising in terms of their absorption capacity advantageous, but they offer for the machine production of filter rods, especially with the high production speeds required today, certain Problems, because of their short length compared to the diameter and their Softness and sensitivity to mechanical stress are difficult to handle are.

The invention is based on the problem of trouble-free manufacture of omentation filters with filter discs as a component in the strand process as well to enable at high speeds.

According to the invention, this object is achieved in that the washers during their promotion in the spaces between the filter plugs on their End face are held that each one disc to one end face of a Filter plug is applied and that during the further conveyance filter plug and Filter discs are connected by the envelope material.

As already mentioned at the beginning, such a filter disc is heavy to handle, so that a feeding of the slices by mechanical means, such as e.g. grasping, must be excluded. Therefore, according to a further embodiment of the invention during its promotion in the interstices held between the filter plugs at the front with suction air. To achieve a maximum filter Stw. Combination filter-glass fiber disc strand process effect, it is useful if a filter disc drilling only on one side on one The filter plug is in contact. According to a development of the invention are consequently after conveying the slices into the spaces between the filter plugs a Scheibohen and a filter plug moved axially towards each other until they are at the front issue.

As long as the thin filter disc has not yet passed through the glued cover material connected to the filter plug, it may tip over. To prevent this from happening, be according to a further characteristic of the invention, the filter discs on the end face held by means of suction air guided through the adjacent filter plug, until filter discs and filter plugs are enveloped. The filter discs should in your lurohmesser that of the filter plug should be matched as precisely as possible, since they otherwise during the wrapping with the wrapping material either with too small a diameter are not completely connected to the envelope material or if the diameter is too large kink and thus impair the filter effect. So true to size Filter discs are obtained by inserting the filter discs according to a further development of the invention punched out of a strip of filter material and placed directly on the filter plug be funded.

The aforementioned device, in particular for practicing the method serves according to the invention, is characterized in that the third feed conveyor Means for holding the filter discs at the front are assigned.

Since the filter discs are very thin and elastic, the means are for holding the filter disks at the end, advantageously according to a further embodiment the invention recordings with holes for the passage of suction air.

The filter discs are conveyed between the spaced Filter plugs placed and should now be placed on the front side of a filter plug be, according to Stw .: Combination filter-glass fiber disc strand process Another characteristic of the invention is a shift to the third feed conveyor assigned conveyor for pushing together filter plugs and filter discs, wherein the shift conveyor to the third feed conveyor with a relative speed is drivable. According to a further embodiment of the invention, the sliding conveyor Holder with holes for the passage of suction air.

According to a further development of the invention, the third feed conveyor a suction device for a strip of second filter material for the filter discs from a supply and a punching device for punching out the filter discs during associated with the movement of the strip.

The invention is based on an exemplary embodiment with reference explained in more detail on the drawing. The figures show: FIG. 1 a combination filter manufacturing machine for the production of combination filters in the strand process in a side view, FIG. 2 shows a feed device for filter disc booms and a shifting conveyor for pushing a filter disc and a filter plug together the combination filter manufacturing machine of Figure 1 on an enlarged scale in a Top view, FIG. 3, the feed device and the sliding conveyor of FIG. 2 in a side view, FIG. 4 shows one on the combination filter manufacturing machine of Figures 1 to 3 produced combination double filter.

The combination filter manufacturing machine of Figure 1 has a first Feeder 1 for filter plugs, from a magazine 2 for receiving multiple long filter plug, a cutting drum 3 for cutting the multiple Stw .: Combination filter glass fiber disc strand process long filter rods in double length Filter plugs, three staggered drums 4 lying next to one another, which can be staggered one behind the other serve the double-length filter plugs, a sliding drum 6 for aligning the There is a filter plug in the same position and a discard drum 7. This feeder 1 corresponds to the filter feed of a MAX type filter attachment machine from Hauni-Werke, Hamburg-Bergedorf The depositing drum 7 is assigned a removal belt 8 with drivers 9, which is followed by a suction conveyor 11 for conveying filter plugs 10. A Second feed conveyor 12 for feeding wrapping material 13 consists of the following parts, the filter manufacturing machine of the type EDF from Hauni-Werke, Hamburg-Bergedorf, are known: a bobbin 14 made of wrapping material 13, a gluing device 16 for Gluing of the wrapping material 13 with strips running in the conveying direction as well a pair of take-off rollers 17. A third feed conveyor 18 and a shift conveyor 20, which are explained in more detail in FIGS. 2 and 3, is an extraction device 19 upstream for strips 21 made of second filter material.

This withdrawal device 19 has a reel 22 serving as a supply from the second filter material, a take-off roller 23, a punching device in the form of a Punching drum 24 and a counter drum 26. For conveying the wrapping material 13 by a format 27 in which an endless filter rod 28 is formed, and for A Pormatband is used to convey this endless filter rod 28 to a knife device 29 31. The knife device 29 is a seam plate 32, which is used to seal the adhesive seam of the filter rod 28 is used, upstream and an accelerator 33 for transferring of Eombinationsfilteratäben 34 on a Ablegertronmel 36, which is a deposit belt 35 is assigned, subordinate.

Figures 2 and 3 show the third feed conveyor 18 and the shift conveyor 20 of Figure 1 in a plan view and in a side view.

Stw ,. Combination filter-glass fiber disc strand process their third Feed conveyor 18 and the sliding conveyor 20 are identical in structure. The reference signs for the parts of the feed conveyor 18 have an index "a", those of the shifting conveyor 20 an index 6 "b". The following description therefore applies to both the third feed conveyor 18 as well as for the shifting conveyor 20.

Conveyor chains 38a (38b) and 39a (39b), which are offset parallel to one another are arranged, form guides for means in the form of holders 41a (41b) to the end face Lialten von Bilterscheibehen 42 or to move the filter plugs 10. These Holders 41a (41b), some of which are shown broken off in FIG hollow and have bores 43b, which in the holders 41b of the displacement conveyor -derers 20 in the conveying direction of the filter plug 10, while they are at the holders 41a of the third feed conveyor 18 point against the conveying direction. The holders 41a (41b) are pivotable in the conveyor chains 38a (38b) and 39a (39b) around sprockets 44a (44b) and 46a (46b) or 47a (47b) and 48a (48b) are mounted. as Connection between the holders 41a (41b) and a drum 49a (49b), the rotatable Has connecting pieces 51a (51b), hoses 52a (52b) are used for passing through of suction air. The drum 49a (49b) has external and internal teeth and is via the external toothing by a main machine drive that is not visible driven spur gear 53a (53b) drivable. A control disk 54a (54b) with no visible control slots with non-visible bores of the drum 49a (49b) align, is mounted on a boundary wall 56a (56b). The holders 41a (41b) are via the hoses 52a (52b), the invisible holes in the drum 49a (49b) and the not visible control slots in the control disk 54a (54b) a line 57a (57b) connected to a suction air source 58a (58b). About the internal teeth the drum 49a (49b) a control wheel 59a (59b) can be driven, which via a V-belt drive 61a (61b) and Stw .: Combination filter-glass fiber disc-strand process a cardan shaft 62a (62b) as a drive for the chain wheels 44a (44b) and 47a (47b) serves. For storing the drum 49a (49b) and the V-belt drive 61a (61b), the eardan shaft 62a (62b) and the sprockets 44a (44b), 46a (46b), 47a (47b) and 48a (48b) is a bearing block 63a (63b), which is fixed to the boundary wall 56a (56b) connected is.

The sprockets 44b, 46b, 47b and 48b of the shifting conveyor 20 have a larger diameter than the sprockets 44a, 46a, 47a and 48a of the third Feed conveyor 18 and the chains 38b and 39b are accordingly longer than the get; th 38a and 39a. But since they are driven at the same speed, there is between the holders 41a and 41b a relative movement instead.

A section of the filter rod 8 is shown in FIG by the dash-dotted lines B and C the cuts of the knife apparatus 29 are indicated. The double-length combination filter is created through these cuts 34.

Operation of the combination filter manufacturing machine according to the figures 1 to 4: The triple-length filter rods of a first filter material that are not Visibly stored in the magazine 2 are removed from the magazine by the cutting drum 3 2 conveyed away and placed on the cutting drum 3 in three filter plugs 10 of the same length cut, staggered one behind the other by the staggered drum 4 and onto the viewing drum 6 delivered, where they are aligned on the same position.

The deposit drum 7 takes over the filter plug 10 from the push drum 6 and transfers it to the removal belt 8 on which the filter plug 58 passes the drivers 9 are conveyed at a distance from one another in the axial direction. from the suction conveyor 11 takes over the filter plugs 10 from the removal belt 8 and transfers them this onto the wrapping material 13, which is removed from the reel 14 by means of the pair of take-off rollers 17th Stw. Ecombination filter-glass fiber disc-strand process removed, Glued in strips by the Belelin device 16 and conveyed to the suction conveyor 11 will. Filter plugs 10 open through the strips of glue on the wrapping material 13 the wrapping material 13 easily held, but are by mechanical action can still be easily displaced on the wrapping material 13. By the take-off roller 23 of the take-off device 19, a strip 21 of a second filter material is pulled off the reel 22 and passed between punching drum 24 and counter drum 26. The punch drum 24 stamps out of the strip 21 small filter disks 42 which have the same diameter as the filter plugs 10 have, and transfers them to the holder 41a (Fig. 2 and 3), to which they are held by means of suction air.

The spur gears 43a and 53b of the third feed conveyor 18 and

of the sliding conveyor 20 drive the drums 49a and 49b, whereby the spur gears 59a and 59b via the V-belt drives 61a and 61b, the chain wheels Drive 44a and 47a or 44b and 47b. The holders 41a lead through the deflection of the conveyor chains 38a and 39a around the sprockets 46a and 48a, the filter discs 42 in each case a gap between two filter plugs 10. The move at the same time Holder 41 b also in one gap between the filter plug 10, namely in such a way that they hit the filter plug due to their higher conveying speed 10 can be brought in from behind in the conveying direction. At the moment when the keeper 41b on the front side of the filter plug 10, suction air is controlled by the control disk 54b, switched on, while the suction air in the holders 41a through the control disk 54a is only switched off when the filter plug 10 is on the filter disc 42 is brought in and the filter disc drilling 42 on the filter plug 10 is present. Are the filter plugs 10 with the filter discs 42 through the holder 41b has been guided into the format 27, in which it is wrapped with the wrapping material 13 and formed into a strand 28, the suction air is applied to the holder 41b Stw .: Combined filter-glass fiber disc-strand process switched off, and he is through the deflection of the conveyor chains 38b and 39b around the sprockets 44b and 47b from FIG Gap led out, as well as the holder 41a by the deflection of the conveyor chains 38a and 39a are led out of the bead around the sprockets 44a and 47a. Of the The strand 28 formed in this way (FIG. 4) is fed to the seam plate 32 where the adhesive seam is dried off. Then from the strand 28 by means of the knife device 29 continuously double-length combination filter 34 cut off by the accelerator 33 are transferred to the discard drum 36, in which they from their longitudinal axial The conveying direction is transferred to a transverse axial conveying direction and onto the depositing belt 37 are promoted.

The advantage of the invention is that it is with the invention Combination filter manufacturing machine is enabled to manufacture combination filters, where a filter element is a very thin disc, due to its softness and sensitivity to mechanical stress is difficult to handle. Because of of the continuous workflow of this combination filter manufacturing machine enables a high production output despite the complicated manufacturing process. With this combination filter manufacturing machine it is also possible to produce double filters to produce, which are desirable for further processing, because modern high-performance filter attachment machines work in two lanes.

- payment entitlements -

Claims (10)

Stw. Combination filter-glass fiber disc - strand process Pate nta ns check 1. Method for producing combination filter rods for tobacco processing companies Industry, consisting of filter plugs of a first filter material and thin discs, In particular, filter discs consisting of a relatively soft, fibrous, second filter material, wherein the filter plugs are placed on a wrapping material at a distance from one another and are conveyed axially and the discs in the spaces between the filter plugs are introduced, whereupon filter plugs and Scheibohen enveloped by the wrapping material and formed into an endless strand, which is then divided into individual combination filter rods is separated, characterized in that the Scheibohen during their promotion are held in the spaces between the filter plugs at their end faces, that in each case a disc is applied to an end face of a filter plug and that during the further conveyance Silteratopfen and Filterscheibohen through the Enveloping material are connected. 2. The method according to claim 1, characterized in that the disks while they are being conveyed into the spaces between the filter plugs with suction air being held. 3. The method according to claim 1 and / or 2, characterized in that after conveying the slices into the spaces between the filter plugs a Scheibohen and a filter plug are moved axially towards each other. 4. The method according to one or more of the preceding claims, characterized in that the end face of the filter discs by means of the adjacent Filter plugs of guided suction air are held until Silterscheibohen and filter plugs are enveloped by the wrapping material. S tw .: Combination filter-glass fiber disc-strand process 5. process according to one or more of the preceding claims, characterized in that the Scheibohen punched out of a filter material strip and immediately the Filter plugs are fed. 6. Device for producing combination filter rods of the tobacco processing industry Industry, consisting of filter plugs of a first filter material and thin discs, In particular, small filter discs made of relatively soft, fibrous, second filter material, with a continuously drivable first feed conveyor for filter plugs, a second continuously drivable feed conveyor for feeding wrapping material, a third continuously Drivable feed conveyor for feeding the filter discs and a format in which the enveloping material is molded around filter plugs and filter discs so that an endless strand is created, and a downstream cutting device for cutting of the endless strand into individual combination filters, especially for exercising the Method according to one or more of the preceding claims, characterized in that that the third feed conveyor (18) has means (41a) for holding the filter discs at the front (42) are assigned. 7. Apparatus according to claim 6, characterized in that the means for holding the filter disc holes (42) receptacles (41a) with bores on the front side (43a) for the passage of suction air. 8. Apparatus according to claim 6 and / or 7, characterized in that that the third feed conveyor (18) is a sliding conveyor (20) for pushing together of filter plugs (10) and filter discs (42) is assigned, the displacement conveyor (20) can be driven to the third feed conveyor (18) at a relative speed is. Stw .: Combination filter-glass fiber disc-strand process 9. Device according to claim 8, characterized in that the displacement conveyor (20) is holder (41b) with bores (43b) for the passage of suction air. 10. Device according to one or more of the preceding claims, characterized in that the third feed conveyor (18) for the filter discs (42) a suction device (19) for a strip (21) of second filter material from a supply (22) and a punching device (24) for punching out the filter discs (42) is assigned during the movement of the strip (21).