DE2100982A1 - Device for the production of a cigar filter unit - Google Patents

Description

Patent attorneys

Dipl. Inn. Hans Westphal 2 1 O O 9 R

Dipl. Inn. Klaus Westphal * ■ ν ν * ν *

Dr.rer.nat. OitO Euchner

ViiliriQGn / Black Forest

Karlsruher Strasse 18

F. J, Burrus fe Cie. , Boncourt (S - / -

Device for producing a cigarette filter unit

The present invention relates to a device for producing a cigarette filter unit within which Sections made of fibrous and those made of free-flowing filter material are arranged one behind the other, and which have a filling part for supplying free-flowing filter material in between arranged in a mouthpiece cover strip and with these filter elements that are continuously moved forward

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Has chambers, the filling part with a storage container is provided, the outlet slot of which forms the filling opening.

It is already a facility for making multi-part Known filters, in which individual filter elements are attached at a distance from one another on an envelope strip, the latter partially placed around the filter elements and then pourable filter material from a funnel-shaped filter part into the between the individual filter elements emptied the gaps will. By regulating the height of the free-flowing filter material located in the funnel-shaped filling part, the pressure is set of the latter at the base of the funnel and thus the degree of filling in the gaps can be regulated. This facility assigns the The disadvantage is that the filling level cannot be regulated in practice by the height of the filling material in the funnel, since the resistance between the individual filter material grains and also between the latter and the funnel walls is great is too large for the height of the filter material to have such an influence. Furthermore, this device has the disadvantage that the outlet opening of the filling part cannot be closed when the machine is at a standstill, so that the filling part is lifted off, particularly in the event of operational malfunctions, which often result in the filling part must that free-flowing filter material flows out and contaminates the facility.

The purpose of the invention is to provide a device that does this

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Does not have any disadvantages.

The device according to the invention is characterized in that Closing means cooperating with the outlet slot of the filling part are provided around the opening of the outlet slot to regulate that the lower part of the storage container is cylindrical, and the closing means from one shovel-shaped closing part, which rests on the inside of this cylindrical part and about its longitudinal axis is pivotable.

In order to improve the controllability of the outlet slot, it is expedient that the closing edge of the closing part runs helically around the longitudinal axis of the cylindrical storage container part, in such a way that when the closing part is rotated in the opening direction, first the end part of the outlet slot directed opposite to the direction of movement of the chambers to be filled and with increasing rotation of the closing part in its opening direction further away from the mentioned end part of the outlet slot parts of the latter are released. A.

It is advantageous if the device according to the invention has supply means for the continuous supply of a sequence of evenly spaced filter elements to the continuous supplied mouthpiece enveloping strips; Fastening means for fastening the individual filter elements on the wrapping strip; Guide and transport means, which are provided with the filter elements enveloping

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guiding stripes and moving forward continuously; one in Forming part arranged in the area of the guide and transport means which, during its forward movement, places the wrapping strip at least approximately in a U-shape around the filter elements attached to it; one above the guide and transport means arranged sliding part, which is designed such that it is between the Legs of the U-shaped envelope strip on the upper sides which rests against the latter advancing filter element and is provided with the outlet slot of the filling part; a guide arrangement, which the wrapper or an additional Strip to one of the filter elements and the chambers in between and filled with free-flowing filter material completely enclosing tube is formed in such a way that strip edges of the enveloping strip or of the additional strip each other overlap; Connecting means for connecting the overlapping strip edges to one another; and release agents to get that with off Filter elements and free-flowing filter material to divide existing sections filled pipe into certain length sections, aufwei t.

It is also useful if the filling part has an elongated sliding part extending in the direction of movement of the filter elements has which with a sealing on the upper sides of the filter elements moving forward with the cover strip Sliding surface is provided that the width of the sliding part is at least

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approximately the diameter of the one to be wrapped in the wrapping strip Filter elements corresponds, and that the side surfaces of the sliding part are parallel to each other and to the direction of movement of the enveloping strip extend and are designed for the sealing abutment of the mutually facing surfaces of the legs of the U-shaped envelope strip.

The invention is explained below with reference to the drawing, for example explained. Show it :

FIG. 1 shows a schematic side view of a device for producing a cigarette filter unit;

FIG. 2 shows a section along the line II-II in FIG

the filler part;

FIG. 3 shows a section along the line HI-III in FIG. 2; FIG. 4 shows a longitudinal section on a larger scale

the line IV-IV in Figure 2; Figure 5 is a section along the line V-V in Figure 1 to

Representation of the fastening part; Figure 6 shows a section along the line VI-VI in Figure 1 to

Representation of the upper welded part; FIG. 7 shows a section along the line VII-VII in FIG

to show the cooling part; FIG. 8 shows a section along the line VIII-VIII in FIG to show the lower welded part; and

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FIG. 9 shows a longitudinal section through the adjustment part of the for

Matching the duty cycle of the filter element feed assembly to the duty cycle of the cutting device serves.

In the device shown in Figure 1, the supply means for the continuous supply of a sequence of uniformly from each other distanced and axially aligned filter elements and 2 on a continuously fed> n mouthpiece enveloping strip 3 For example, a machine 4, referred to in the cigarette industry as the Molins D.A.P.T.C. machine, and in the U.S. Patent No. 2,957,285 is described in more detail. This machine is with two storage containers 5 for storing filter material pieces made of cellulose and acetate, for example, and two rotatable drums 6 are provided for receiving the latter. The machine 4r is driven by the chain drive 7.

The drums 6 are along their circumference with parallel to their axes of rotation extending grooves provided for receiving the filter material pieces and have a certain number of radially extending incisions into which rotatable knives for dividing the Rod-shaped pieces of filter material into the smaller filter elements 1 and 2 intervene.

After dividing the rod-shaped pieces of filter material into smaller filter elements 1 and 2 give the drums 6 the latter

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a transport and spacing device 8, which the filter elements 1 and 2 are alternating axially on each other aligned in the direction of arrow 9 moves forward and at the same time brings them to an even distance from one another.

Then the evenly spaced apart and axially aligned filter elements 1 and 2 continuously fed to a likewise continuously fed mouthpiece wrapping strip 3, placed on it and thereby as can be seen from Figure 5, in the lateral direction through the

Guide parts IO and 11 out and through an above the "

Mouthpiece enveloping strip 3 arranged, synchronously with this circumferential pressure belt 12 held in their relative position to each other.

The mouthpiece cover strip 3 is on its filter elements 1 and 2 facing side with a heat softenable adhesive such as a thermoplastic plastic, so that it is possible to use the individual filter elements 1 and 2 directly after their transfer to the wrapping strip 3 with the help of a

To attach the heating element 13 to this and thus a relative f

shift against each other, that is, a change in their distance from each other, impossible. The mouthpiece cover strip As can be seen from FIG. 5, 3 rests on a support part 14, and the heating element 13 is through from below a slot opening in the support part 14 through against the wrapping strip 3 and thus indirectly against the to be fastened Filter elements 1 and 2 can be pressed on. The temperature of the heating element

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is preferably controlled thermostatically. The heating element 13 is arranged in such a way that when the enveloping strip 3 is at a standstill is lifted from this in order to avoid burning the same.

After the individual filter elements 1 and 2 have been attached to the wrapping strip 3, the latter is guided onto an endless conveyor belt 15 and then these parts come together in a guide rail that acts as a molding part, where the wrapping strip 3 is at least approximately U-shaped around the during its forward movement filter elements 1 and 2 attached to it is placed. This structure is then fed by means of the conveyor belt 15 to a filling part 16, shown in more detail in FIGS. 2, 3 and 4, which is used to introduce free-flowing filter material such as charcoal into the chambers 17 formed between the individual filter elements 1 and 2. The memory is
container 18 of the filling part 16 fan his downward

Outlet side with one resting on the filter elements 1 and 2

ο
and these are connected by sliding part 19 enclosing at least 180.

The width of the sliding part 19 corresponds approximately to the diameter of the filter elements 1 and 2 to be wrapped in the wrapping strip 3, wherein the side surfaces 19a and 19b of the sliding part 19 are parallel to each other and to the direction of movement of the conveyor belt 15 and to the sealing contact of the mutually directed Areas 3a and 3b of the legs of the U-shaped envelope strip to serve. In this way, through the end faces of the filter

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eleinonte 1 and 2 the envelope 3 and the sliding surface of the Sliding part 19 limited chambers 17 formed.

To ensure that the chambers 17 are completely filled and that the free-flowing filter material can slide in the storage container 18 and to support in the outlet slot 20 down, is the Filling part 16 is provided with a vibrator 23, which causes the filling part, which is resiliently suspended from leaf springs 24 (FIG. 3) oscillates at 100 Hz in a vertical plane.

The filling part 16 is attached via the leaf springs 24 to a guide rail 25 parallel to the guide rail 25 intended for the conveyor belt 15 extending guide part 26 and clamped by means of the screws 27 on this. The screws are used for this

28 for the horizontal alignment of the sliding part 19 opposite the filter elements 1 and 2 passing underneath this, and by means of the screws firmly connected to the guide part 26

29 can be the amplitude of the caused by the vibrator 23

Vibrations of the filling part 16 can be set. · Ä

Since the width of the sliding part 19 is approximately the diameter of the filter elements corresponds, the outlet slot 20 can be made relatively wide, which is very important for an unhindered Replenishment of the free-flowing filter material. At the end of the outlet slot 20 a semicircular wiping edge 30 is provided, which the cross section of the continuous filter elements 1 and

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limited and excess free-flowing filter material wiped off. Since this wiper edge 30 is exposed to heavy wear during operation of the device, it is located on an exchangeable stripping part 31, which is inserted into the sliding part 19 can be used.

The stripping part 31 is additionally provided with transverse grooves on its underside 31a, the grains of the free-flowing filter material that may still be on the filter elements strip off, pick up and deliver into subsequent chambers 17.

As when filling certain free-flowing filter materials an undesirable amount of dust is created, which is deposited on the surface the filter element precipitates and thus causes blackening of the same, the stripping part 31 can also have a Extraction opening are assigned through which the dust coating is removed by means of a very low negative pressure.

To adapt the size of the tread slot 20 to the grain size To be able to make the free-flowing filter material, the lower part 32 of the storage container 18 is cylindrical formed, in which a shovel-shaped closing part 33 is arranged, which is on the inside of this cylindrical Part 32 slidably rests and is pivotable about the longitudinal axis of the same. The handle 34 is used to pivot the closing part 33, wherein a resiliently pressed against the semicircular plate 35 bolt 36 in various positions in recesses of the plate

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clicks into place. The closing part 33 thus has the shape of a part represents a cylindrical outer surface and is made as thin as possible in order to accommodate the adjustment forces to be exerted on the handle 34 to keep filled storage container 18 as low as possible. The closing edge of the closing part 33 is against the inside of the cylindrical part 32 is still beveled or sharpened, in order to facilitate the adjustability of the closing part 33, and it runs helically around the longitudinal axis 37 of the cylindrical part 32, such that at a

Rotation of the closing part 33 in the opening direction first of the "

directed against the direction of movement of the chambers to be filled End part of the outlet slot 20 and with increasing rotation of the closing part in the opening direction further mentioned above End part of the outlet slot removed parts of the latter are released. »

The closability of the outlet slot 20 is also advantageous if the operation of the device is interrupted or the filling part 16 to release the filter λ located below it

elements 1 and 2 occupied cover strip 3, after loosening the clamping screws 27 are to be lifted off.

In order to avoid that the storage container 18 fed from the storage container 38 (FIG. 1) is overfilled, there are two in it Inner directional tubular pieces 39 arranged, one of which is upper Each end with a feed pipe 40 for the ricselfable filter material

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is in connection and the other lower end is at the level of the storage container 18. In the The embodiment shown is that facing the suction opening 22 Pipe piece-39 with a recess directed against the latter to increase the outflow of free-flowing filter material provided, since this is where the consumption of the latter is greatest. About the supply of free-flowing filter material To interrupt from the storage container 38, the storage container 18 is still with one at the lower end of the supply pipes 40 slidable cap 42 is provided.

In the end region 43 of the sliding part 19, the upper part 44 of the guide rail 25 is designed in such a way that the wrapping strip 3 is formed into a closed tube, wherein a suction arrangement 45 is provided, possibly between the envelope strip edges suck off any free-flowing filter material.

A closing device 46 is then provided to connect the now overlapping wrapping strip edges, which As can be seen from FIG. 6, it has a heatable element 47 which can be placed on the pipe to be closed. In order to avoid that, with the filters attached to the cigarettes, free-flowing filter material between the outside of the filter elements and the inside of the wrapping strip enters the smoker's mouth, the wrapping strip should cover the entire circumference of the Filter elements be glued to these.

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In addition * is the behoizbaro element 47 with a single cross-section provide seen semicircular guide channel 48, the The radius of curvature corresponds to the outer radius of the pipe to be produced. To get an exact diameter of the To achieve pipe is immediately after the guide channel 48 of the heatable element 47, a further analog guide channel 49 a cooling part 50 which can be placed on the pipe is provided for solidifying the heat-softened curative material *

After the pipe is glued shut, it is fed to a separating device 51, in which it is divided into such that the Length of each filter structure is six times the length of a filter for a cigarette.

Since the separating device 51 must work exactly synchronously with the movement of the filter elements in the finished tube, an adjusting part 52 (Figure 9) is also provided to drive the supply means 4 for supplying the filter elements 1 and 2 to the Wrapping strip 3 and the drive for the separating device 51 for Division. To synchronize the pipe filled with filter material into certain length sections.

The drive for the supply means 4 and the drive for the separating device 51 via a two-part connecting shaft 53a and 53b connected to one another, wherein between the first part 53a and the second part 53b of the connecting shaft a with the latter rotating adjusting member 54 is provided for changing the relative angular position of the two connecting shaft parts 53a and 53b to one another

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The adjusting member 54 has two parts which are axially aligned with one another and displaceable relative to one another in the axial direction and 56, one of which is provided with guide elements 57, which are in helical grooves 58 of the other Part 55 engage.

To move the adjusting member part 56 in its axial In the direction c relative to the adjusting member part 55, a spindle 59 which can be driven by an electric motor is provided which, in its Rotation moves the intermediate piece 60 and thus the part 56.

After the separating device 52, a further gluing station 61 (FIGS. 1 and 8) is provided, the heating element 62 of which rests against the tube from below. The guide channel 63 of this heating element has a semicircular cross-section and connects the not yet glued part of the cover strip 3, which has been formed into a tube the filter elements 1 and 5, so that the latter are completely glued to the covering strip 3 over their entire circumference and no free-flowing filter material can escape from the chambers 17, between the filter element surfaces and the covering strip 3. Endless, coiled and circumferential wires 64 press on the top of the pipe sections.

With such a device it is possible to regulate the size of the outlet opening of the filling part very precisely or, if necessary, the Close the outlet opening immediately. Furthermore, such a trained filler part has the advantage that with a reduction in size

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The granular filter material normally used at the outlet opening also not to undesirable dusty filter material is crushed.

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Claims (1)

PATENT CLAIMS - 1. / device for the production of a cigarette filter unit, within which sections made of fibrous and those made of free-flowing filter material are arranged one behind the other, and which a filling part for the supply of free-flowing filter material in between and with arranged on a mouthpiece cover strip this continuously forward moving filter elements located chambers, wherein the filling part with a storage container is provided, the outlet slot of which forms the filling opening, characterized in that with the outlet slot of the filling part (16) cooperating closing means (33) are provided are, in order to regulate the opening of the outlet slot, that the lower part (32) of the storage container (18) is cylindrical is formed, and the closing means from a shovel-shaped There are closing part (33) which rests against the inside of this cylindrical part (32) and around the longitudinal axis of the same is pivotable. 2. Device according to claim 1, characterized in that the closing edge of the closing part (33) helically around the The longitudinal axis (37) of the cylindrical storage container part (32) runs in such a way that upon rotation of the closing part (33) in The direction of opening first is opposite to the direction of movement to be filled chambers (17) directed end part of the outlet slot (20) 209824/0527 21009Ö2 and with increasing rotation of the closing part in it Opening direction further away from the mentioned end part of the outlet slit parts of the latter are released. 3. Device according to claim 1, characterized in that it has supply means for continuously supplying a sequence of evenly spaced apart filter elements (1, 2) on the continuously fed mouthpiece cover strip (3); Fastening means (12-14) for fastening the individual filter elements (1,2) on the cover strip; Leadership and transport j | means (15) which guide the wrapping strip provided with filter elements and move it continuously forward; one in Area of the guide and transport means arranged forming device (25), which the wrapper during its forward movement at least approximately U-shaped around the filter elements (1,2) attached to it, one above the guide and Transport means (15) arranged sliding part (19) which is designed such that it is between the legs of the U-shaped envelope strip (3) on the upper sides of the " with the latter advancing filter elements (1,2) rests and is provided with the outlet slot of the filling part (16); a guide assembly (43, 44) that supports the wraparound strip or an additional strip to one of the filter elements and those in between, with free-flowing Filter material-filled chambers completely surrounding the tube, so that the strip edges of the HUllstreifens 209824/0527 or the additional strip overlap each other; Connecting means (46) around the overlapping strip edges with to connect to each other, and separating means (51) around the filter elements (1,2) and free-flowing filter material to subdivide existing sections of filled pipe into certain length sections. 4. Device according to claim 1, characterized in that im Storage container (18) at least one in its interior directed Röhrst tick (39) is arranged, one end of which with a Feed part for the free-flowing filter material can be connected and the other end is at the level of the storage container. 5. Device according to claim 3, characterized in that the guide arrangement (43, 44) for deforming the enveloping strip or an additional strip to form a closed tube with a suction arrangement (45) for suction from between the Strip edges located free-flowing filter material is provided. 6. Device according to claim 1, characterized in that the filling part (16) via resilient means (24) in the filling direction in Vibration is suspended displaceably and is in operative connection with a vibrator (23). 7. Device according to claim 6, characterized in that the resilient means of at least one leaf spring (24) 20982A / 0527 21ÜQ9Ö2 exist, the oscillation amplitude is adjustable by means of an adjustable stop (29). 8, action according to claim 6, characterized in that the vibrator (23) is designed in such a way that the filling part (16) operates at a frequency of 100 Hz in the filling direction in Vibration can be displaced. 9. Device according to claim 1, characterized in that the filling part (16) has an elongated sliding part (19) extending in the direction of movement of the filter elements, * the sliding surface sealingly abutting on the upper sides of the filter elements moving forward with the wrapping strip (3) is provided that the width of the sliding part (19) at least approximately corresponds to the diameter of the filter elements (1, 2) to be wrapped in the wrapping strip (3), and that the side surfaces (19a, 19b) of the sliding part (19) are parallel to each other and to the direction of movement of the HUllstreifens (3) and to the sealing system of the mutually facing surfaces (3a, 3b) of the legs of the Λ U-shaped cover strips are designed, 10. Device according to claim 3 or 9, characterized in that that the sliding surface of the sliding part (19) is chrome-plated. 11. Device according to claim 3, characterized in that the connecting means for connecting the overlapping 209824/0527 210Ü982 SO Strip edges have a heatable element (47) which can be placed on the pipe to be closed that the heatable element (47) with a seen in cross section at least approximately semicircular guide channel (48) is provided, the radius of curvature of which corresponds to the outer radius of the corresponds to the pipe to be produced, and that immediately after the guide channel (48) of the heatable element (47) Another similar guide channel (49) of a cooling part (50) that can be placed on the pipe to solidify the heat-softened part Adhesive is provided. 12. Device according to claim 11, characterized in that in the direction of movement of the guide and transport means seen after the first heatable element, a second heatable element is provided, the guide channel (62) of which connects the not yet glued part of the strip (3), which has been formed into a tube, with the filter elements. 2098PA / 05