DE2715994A1 - Inserter for cigarette fume tubes - has mandrel on which fibrous material strip is wound around longitudinal axis - Google Patents

Abstract

The cigarette making machine has arrangement for fitting a tube made of flexible fibrous material into a transversely moving cigarette. This arrangement is used for forming a fume channels in cigarettes to ensure high combustion temperature by increased oxygen supply. A strip of material is used for making small tubes. This material is wound about its longitudinal axis on a mandrel. The mandrel is pushed during the winding process to a certain depth into this object and subsequently removed so that the tube is held in the cigarette.

Description

Stw .: Cigarette-LuEtkanal-spiral pipe - Hauni file 1468

Method and arrangement for inserting a tube into a rod-shaped one Article The invention relates to a method of inserting a tube into a rod-shaped article that moves transversely axially and is made of a flexible, fibrous material Material.

The invention also relates to an arrangement for introducing a Tube into a transversely axially moving rod-shaped article made of a flexible, fibrous material for practicing the method according to the invention.

The problem on which the invention is based is primarily related the harmfulness of tobacco smoking for the human organism. At the Tobacco smoking produces pollutants while the tobacco is burned Enrichment in tobacco smoke depending on the course of the combustion process in the glowing zone of a smoking article is different. In the German published patent application DOS 2.215.064 is commented on this issue and in particular on the high carbon monoxide content in tobacco smoke, also in filter cigarettes, pointed out.

Carbon monoxide, which is produced with every combustion process, that is also when smoking so-called "healthier cigarettes" (lower nicotine and Condensate content), has the harmful property that it absorbs oxygen of the blood slows down.

For this reason, the patent literature repeatedly refers to the Advantages of a smoke channel in the tobacco article pointed out. The smoke channel, in general a cavity Stw .: cigarette-air duct-spiral pipe-Hauni file 1468 is at the core of the tobacco filling of a smoking article, ensures an increased combustion temperature in the glowing zone of the smoking article due to increased oxygen supply to the same.

In the German patent specification 1.226.017, a cigarette with a smoke channel and a possibility for manual introduction of such into the cigarette described.

From the German laid-open patent application DOS 1.632.226 is a machine known with which an endless smoke channel in the running tobacco rod a cigarette cigarette machine is incorporated. Method to an endless Inserting the smoke channel in a tobacco rod have the disadvantages that the smoke channel, which generally consists of thin paper, in further known processing of the tobacco rod (leveling, wrapping, pressing) is crushed and also not can be held in the center of the tobacco rod.

From the German patent application DOS 2.322.162 is a Another machine known with which an axial LuStkanal in a finished cigarette is punched and then a closure piece is inserted into the cavity. In the end is known from the American patent 3,840,028 a device with which a finished tube is inserted into a cigarette.

Fulfill the last two machines and working methods mentioned however, not the requirements which modern technology in relation to rational Working method with high machine performance, quite apart from the others Industry demands for cost-effective and space-saving constructions, which should fit harmoniously into the structure of the existing production facilities.

Stw .: cigarette air duct spiral pipe - Hauni file 1468 of the invention is based on the task of developing a process with which cigarettes be equipped with smoke ducts during their manufacture without the performance uid the classic structure of modern production plants has to be changed.

The solution to the problem according to the invention is characterized in that that the peripheral surface of a rod-shaped article is firmly enclosed that a for the tube formation suitable strip-shaped material on one around his Longitudinal axis rotatable mandrel wound and that the mandrel during the winding process longitudinally axially inserted into the article to a predetermined depth and then is pulled out again, leaving the ear in the article.

The invention is not only about the introduction of smoke channels Thought in tobacco fillings, but basically to the problem of the rational Insertion of tubes into rod-shaped, fibrous articles such as filter rods, Tampons, parts of plants, etc.

The strip material to be used for tube formation can be paper, tobacco foil, plastic foil, metal foil, in short, any flexible material be, whereby this material is impermeable to air or permeable to air e.g. by perforation, as well as can be prepared with chemical substances.

In addition, the tube should be closed at one end, depending on the requirement or be open.

When inserting into a filling, the mandrel must be wound with the Strips displace the filling compound. more expedient Deputy: Cigarette-LuStkanal-spiral tube - Hauni file 1468, this is achieved by rotating the mandrel, with the Withdrawal of the mandrel; is prevented by reversing the direction of rotation that the wound strip is again torn from the article. A special one An advantageous method for inserting the tube into a filling is given when the strip-shaped material is wound helically from the rotating mandrel and at the same time the mandrel is turned into the filling. In this way the tube is screwed into the filling like a screw. By repenting the direction of rotation of the mandrel when it is withdrawn, the tube remains then naturally sit firmly in the filling.

In order to have the strip-shaped material continuously available, a supply of strips is provided in the form of a bobbin, the diameter of which is in the frame a further advantageous embodiment of the invention is kept small as a result, that the strip-shaped material is fed in a wide web and narrow Strips are cut off at an angle to the conveying direction of the wide web.

To connect the beginning of a narrow strip of material to the mandrel, the strip must be based on the speed of moving an article in a conveyor belt moving mandrel. To do this, the strip of material would have to be very strong be accelerated, whereby the transfer of the strip to the mandrel is unsafe. In a particularly expedient development of the invention, it is therefore provided that that the beginning of the narrow strip is connected to the mandrel by turning the feed direction of the strip Stw .: cigarette air duct spiral tube - Hauni files 1468 is against the transverse axial conveying movement of the mandrel and the article. By this measure is the beginning of the strip with a high degree of certainty in connection with the mandrel brought, the strip speed is minimal when feeding.

After all, it also proves to be a rational way of working with little mechanical effort as particularly favorable that the rotational movement of the mandrel and its longitudinal axial movement are controlled together.

To practice the method according to the invention, the above is mentioned Arrangement is provided which has a conveyor for transverse axial conveying of the articles and means for clamping the articles by tightly, conformally enclosing them of their peripheral surfaces, as well as moving with the conveyor, in axial alignment with the articles arranged, rotatable and axially displaceable mandrels, with a Feed device for a strip of material forming the tube and a threading device for connecting the beginning of the strip to a mandrel and a control device for causing the rotation and displacement movement of the mandrels.

So that the articles are not blown when the mandrels are inserted, it is necessary to clamp it firmly. Tn a favorable embodiment of the According to the invention, therefore, the conveyor is a troughed drum and the device for clamping the article is a troughed belt partially wrapping around the troughed drum. Such Arrangement has the advantage of a compact design and closes the possibility one, the article during any long way on the Deputy: Cigarette air duct spiral tube - Hauni file 1468 hollow drum in clamped To keep state. When inserting the mandrel into the filling, the mandrel must at the same time rotate. The use of the drill bit principle proves to be particularly advantageous here, by connecting each mandrel to a screw spindle and the spindle going into a threaded hole is guided, over a guided in a stationary curve Cam roller controllable in terms of a simultaneous pushing and rotating movement is.

In order to supply the strip material efficiently and in a space-saving manner, a wide strip of material synchronized with the rotation of the trough drum from a bobbin deducted. In an advantageous further embodiment of the invention for the supply of the strip material to the mandrels a suction drum is provided, which at the same time serves as a cutting drum and with a knife drum for cutting off narrow strips of material from the fed wide material web collects. The cut is made at an angle to the conveying direction of the wide material web, so that the cut ones are narrower drive to assume an optimal starting position in relation to the respective mandrel in order to be free of disruption to be able to be wound up in a helical manner.

So that the narrow strips are fed to the thorns in a timely and safe manner can be, according to a further development of the invention, their conveying direction, i.e. the direction of rotation of the suction drum, opposite to the direction of rotation of the Trough drum. As a result of this measure, the suction drum only needs relatively slowly to rotate. For connecting a thorn to the beginning of a strip is Deputy: Cigarette air duct spiral tube - Hauni file 1468 provided a threading device, which has a V-shaped guide in an expedient manner, which as it were Mouthpiece is arranged in front of the mandrel tip and the beginning of the strip in an axial Slot of the mandrel leads. Threading the beginning of the strip into the V-shaped guide is advantageously carried out by blowing off the beginning of the strip from the suction drum supported with the help of a stationary blower.

The advantages of the method and the arrangement according to the invention exist in the rational construction, through which the arrangement at any time and without major Effort irl a conventional production plant can be incorporated, as well their performance, which corresponds to the performance of modern production facilities.

Stw .: cigarette air duct spiral pipe - Hauni file 1468 The invention is based on exemplary embodiments with reference to the drawings explained. They show: FIG. 1 a side view of the overall structure of the arrangement for introducing paper tubes into filter cigarettes, FIG. 2 is a schematic Representation of the mandrel movements, Figure 3 is a sectional view along the lines III-III in Figure 1.

FIG. 4 shows a partial view from FIG. 1, FIG. 5 shows a sectional view the lines V-V in Figure 3.

Stw .: Cigarette-LuStkanal-Spiralrohr - llauni file 1468 Figure 1 shows schematically the whole, taufbAu an arrangement for the introduction of paper tubes in filter cigarettes.

With "filter cigarettes" are both single-filter cigarettes and Double filter cigarettes meant. In the case of double-filter cigarettes, the opposite is not visible side of a conveyor drum designed as a trough drum 1 again the same facility to be described is provided.

The troughed drum 1 has receptacles 2 for articles in the form of individual or double filter cigarettes 3. A feed drum 4 is used to feed filter cigarettes 3 in the receptacle 2 of the trough drum 1. A troughed belt 6 with recesses 7 is guided over pulleys 8 and 9 and is synchronous with roller 11 to the speed of the Troughed drum 1, e.g. as in the known "timing belts", can be driven. The trough belt 6, which can also be designed as a trough chain, encloses the trough drum 1 partially on its circumference, with the recordings 2 of the troughed drum 1 congruent with the recesses 7 of the troughed belt 6 are. Between recordings 2 and the The filter cigarettes 3 are recesses 7 by enclosing their circumferential surface firmly clamped. A removal drum 12 with receptacles 13 is used to take over the with a paper tube provided filter cigarettes 3 and can this one more Feed processing.

From an invisible bobbin is a wide strip 14, e.g. made of cigarette paper, can be pulled off with roll-off rolls 16 and 17 and becomes one the same: 7-sided Suction drum 18 designed as a cutting drum with suction bores 23 (FIG. 3) is supplied. Each suction drum 18 works with a knife drum 19, which by means of a knife 54 of the wide Stw .: cigarette air duct spiral tube - Hauni files 1468 paper strips 14 narrow strips 21 (see Fig. 2) at an angle to the conveyor belt of the wide strip 14 can separate. Spikes 22 for winding up the narrow strips 21 are rotatable and movable on one or both end faces of the troughed drum arranged.

For a better explanation of the training and storage of the mandrels 22 the section along the line III-III in FIG. 1, as shown in FIG. 3, is used is. The mandrels 22 are thin cylindrical rods, e.g. made of steel, with an axial Slot 24 in its conical tip 26. The mandrels 22 are screw spindles 27 connected, which are guided in threaded bores 28. The threaded holes 28 are in a cylindrical hollow body 29, which is fixed with a flange 31 the troughed drum 1 is connected, incised. each screw spindle 27 is mounted with its rear end in a ball bearing 32 which is in a carrier 33 is pressed in. In each carrier 33 there is also a cylindrical guide rod 34 attached, which is slidably mounted in a bore 36 and for straight guidance of the carrier 33 is used. A tab 36 is attached to the carrier 33, which is a cam roller 37 carries, which is guided in a fixed curve 38.

The curve 38 is incorporated into a stationary, pot-shaped frame 39. An end face 42 of the troughed drum slides sealingly on a flange 41 of the frame 39 1.

In the flange 41, a control slot 43 is provided for the known Suction air supply for the receptacles 2 of the trough drum provided as suction troughs 1.

Stw .: cigarette-LuStkanal-spiral pipe - Hauni file 1468 Figure 4 shows a side view of Figure 3, in which the attachment of the cylindrical hollow body 29 is represented with its flange 31 on the troughed drum 1 by screws 44.

In addition, the geometrical design of the carrier is shown in this figure 33 more recognizable.

Figure 5 shows a section along the lines V-V in Figure 3 and serves to explain a threading device 49 for the beginning of a narrow paper strip 21 in the slot 24 of a mandrel 22. Parts that were already shown in the previous figures are provided with the same reference numerals and are not explained in more detail.

The narrow paper strips 21 are on the suction drum 18, the moves opposite to the direction of rotation of the troughed drum 1, via Sauc: chambers 51 and suction bores 23 and V-shaped guides 47 with their beginnings supplied, which are assigned to the mandrel tips 26 and firmly connected to the troughed drum 1 are. A pressure chamber 52 is provided in the suction drum 18 in the transfer area, which the beginning of the respective narrow strip 21 so from the suction drum 18 can blow off so that it can exactly enter one of the V-shaped guides 47. The application of suction and pressure chambers 51 and 52 with suction or compressed air can in the usual quiet manner via a sliding ring indicated by 46 in FIG. 3 with control slots take place or with a stationary core of the suction drum 18 simply with air lines. A stationary roll bar 48 is used to guide the strip 21 taut on the mandrel surface when rolling up.

Deputy: cigarette air duct spiral tube - Hauni file 1468 The mode of action The arrangement described is as follows: A wide strip 14 of cigarette paper is synchronized with the take-off rollers 16 and 17 from a reel, not shown withdrawn to the bottle cycle and fed to the suction drum 18. The one with the suction drum 18, which also serves as a cutting drum, cooperating knife drum 19 separates with its knives 54 narrow strips 21 in the form of parallelograms transversely to the conveying direction of the suction drum 18. In the area of the pressure chamber 52 the beginnings of the narrow strips 21 are lifted off the suction drum 18 by compressed air, so that with its beginnings it goes directly into the opposite direction to the suction drum 18 rotating troughed drum 1 attached, respective V-shaped guides 47 run in.

Because the V-shaped guides 47 are right next to the conical mandrel tips 26 are arranged with the axial slots 24, each beginning becomes a narrow one The strip 21 is also threaded into the slot 24 of a mandrel 22 at the same time.

Depending on whether the beginning of the strip of a strip 21 is the tip of the mandrel 26 protrudes over the longitudinal axis or lies further back when threading, an at the end is created closed or open tube 56. As well as the beginning of a strip 21 in the When the slot 24 of a dome 22 is threaded, the cam roller 37 becomes the cam 38 continued so that the respective carrier 33 belonging to the mandrel 22 moves in the direction on the troughs drum 1 moved while on the screw spindle 27 the mandrel 22 into the filter cigarette 3 and pushes it at the same time according to the slope the thread turns of the screw spindle can rotate.

So while the mandrel 22 rotates bores into the cigarette 3, wraps he at the same time the strip 21 so Stw .: cigarette air duct spiral tube - Hauni file 1468 that the mandrel 22 wrapped with the strip 21 turns like a Threaded screw drilled into the cigarette 3. So here the respective cigarette 3 is not blown, it is between the recordings 2 of the troughed drum 1 and the recesses 7 of the troughed belt b firmly clamped. During this process, the strip 21 is withdrawn from the suction drum 18 and comes under the stationary Roll bar 48, which holds the now loose end of the strip 21 against the mandrel 2 ', so that the strip 21 cannot move.

About the curve 38, the mandrels 22 are successively up to The turning point 53 of the curve 38 is drilled into the cigarette 3 and then has its end position reached in the cigarette 3. By changing the direction of curve 38 after the turning point 53 the direction of rotation of the mandrels 9 '> is reversed and the same at the same time pulled out of the cigarettes 3. The strips 21 remain as a result of the rotation reversal the mandrels 22 return as spiral tubes 56 in the cigarettes and form smoke channels. In the course of the further promotion of the cigarettes 3 on the troughed drum 1, these are transferred to the removal drum 12 and fed from this for further processing.

Claims (12)

Stw .: cigarette air duct spiral tube - Hauni file 14 @ P a t e n t a n s p r ü c ii e 1. Method for inserting a tube into a transverse axis moving rod-shaped article made of a resilient, fibrous material, thereby characterized in that the peripheral surface of the article is tightly enclosed that a for the tube formation suitable strip-shaped material on one around his The longitudinal axis of the rotatable mandrel is wound up and that the mandrel is during the winding process longitudinally axially to a predetermined depth iri the article and then inserted is withdrawn again, leaving the tube i: n article. 2. The method according to claim 1, characterized in that the direction of rotation of the mandrel is reversed on retraction. 3. The method according to claim 1 and / or 2, characterized in that that the strip-shaped material is wound helically onto the mandrel. 4. The method according to one or more of the preceding claims 1 to 3, characterized in that the strip-shaped material in a l, rider- Web fed and narrow strips at an angle to the conveying direction of the wide web be separated. Stw. Cigarette air duct spiral tube - Hauni file 14 @@ 5. Procedure according to one or more of claims 1 to 4, characterized in that the The beginning of a sound strip is connected to the prostitute, with the @ leading direction of the strip against a transverse axial conveying movement of the mandrel and the article i. 6. The method according to one or more of claims 1 to 5, characterized characterized in that the rotational movement of the mandrel and its longitudinal axial movement be controlled together. 7. Arrangement for introducing a tube into a rod-shaped one Article made from a pliable, fibrous aterial, especially for exercising the Method according to one or more of Claims 1 to o, characterized by a conveyor (1) for the transverse axial conveying of the articles (3) and a device (U) for clamping the articles (3) by firmly enclosing them in the correct shape Circumferential surfaces, as well as moving with the conveyor (1), in axial alignment with the articles arranged, rotatable and axially displaceable mandrels (22), strip with a feed device (18) for a material forming the tube (21) and a threading device (-T9) for connecting the beginning of the strip (3) with a mandrel (22) and a control device (37, 38) for effecting the rotational and sliding movement of the mandrels (22). 8. Arrangement according to claim 7, characterized in that the conveyor a troughed drum (1) and the device for clamping the articles (6) the troughed drum (1) is partially enclosing troughed belt (6). Stw .: Cigarette air duct spiral tube - Hauni file 1468 9. Arrangement according to claim 7, characterized characterized in that each mandrel (22) is connected to a screw spindle (27) and the spindle over a curve (38) in the sense of a simultaneous pushing and leotation movement is controllable. 10. Arrangement according to claim 7, characterized in that the feed device for the material forming the tube is a suction drum (18) which simultaneously AlJ cutting drum is used and with a knife drum (19) for cutting off narrower Material strips (21) from a fed wide material web (14) cooperates. 11. Arrangement according to claim 7 and / or 10, characterized in that that the suction drum (18) rotates opposite to the trough drum (1). 12. The arrangement according to claim 7, characterized in that the threading device (49) from a V-shaped guide (47), a stationary blowing device (52) in the suction drum (18) and an axial slot (24) in each mandrel (22).