DE1272195B - Tobacco conveyor channel in a cigarette rod machine - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

A 24 c

German class: 79 b -12/10

Number: 1272 195

File number: P 12 72 195.8-23 (A 40726)

Filing date: July 17, 1962

Open date: 4th July 1968

The invention relates to a tobacco conveying channel in a cigarette rod machine with a leveling device for the tobacco stream and one downstream, in front of the entry point of the cigarette paper band lying press roller.

It is used in cigarette rod machines that are not provided with a leveling device for the tobacco stream are known for a long time, on the tobacco stream before it accumulates on the cigarette paper tape to allow a press roller to act in the tobacco duct. It is also known to have such a Upstream of a press roller an equalizing device for the tobacco stream.

In these known designs, the equalized tobacco stream is behind the equalizing device promoted at least a certain distance in a one-sided, mostly open at the top. While However, this conveying path in the open channel can cause the equalized tobacco flow due to its inherent elasticity The tobacco fibers expand or puff up to a certain extent, causing a change the mutual position of the tobacco fibers arises, so that there is a risk that the Tobacco stream its uniformity of shape and partly also of the achieved by leveling Density is at least reduced.

The object of the invention is therefore to reduce this expansion or bulging of the equalized tobacco flow to be avoided with certainty.

According to the invention, this object is achieved in that the press roller in a comparatively large distance of about at least the pressure roller diameter arranged from the leveling device and between the leveling device and the press roller, a cover plate serving as a press surface for the open side of the tobacco conveying channel is arranged. By such an arrangement an expansion of the equalized tobacco stream between the equalizing device is achieved and the press roller turned off and a stream of tobacco with a high degree of uniformity reached for further processing.

In the following, the invention is based on exemplary embodiments in connection with the Drawings explained in more detail. It shows

Fig. 1 is a perspective view of a part a cigarette making machine according to the invention,

Fig. 2 is a cross section of the tobacco rod transporting tape, the section along the Line 2-2 in FIG. 1 guided in the direction of the arrows is,

F i g. 3 shows a cross-section of the tobacco conveying channel in a tobacco rod that guides the tobacco rod
Cigarette rod machine

Applicant:

American Machine & Foundry Company,

New York, N.Y. (V. St. A.)

Representative:

Dipl.-Ing. F. Weickmann,

Dipl.-Ing. H. Weickmann

and Dipl.-Phys. Dr. K. Fincke, patent attorneys,

8000 Munich 27, Möhlstr. 22nd

Named as inventor:
Jesse Randolph Pinkham,
Winston Salem, NC (V. St. A.)

Claimed priority:

V. St. v. America July 18, 1961 (124 954) - -

renden tape, the section along the line 3-3 in F i g. 1 is made in the direction of the arrows,

F i g. 4 one of the F i g. 1 similar view of a modified embodiment according to the invention, the

F i g. 5 and 6 sectional views of the belt and the means for guiding which cooperate with it of the tobacco rod, the cuts along lines 5-5 and 6-6 in Fig. 4 in the direction of Arrows are made,

F i g. 7 is a perspective view of an automatic device for raising and lowering the Equalizing device and the cover plate interacting with this for setting the equalizing line,

F i g. 8 one of the F i g. 1 similar perspective view of a further embodiment according to the invention,

F i g. Figure 9 is a partial sectional view of the guide and press surface for the tobacco rod associated with the leveling device according to FIG. 8 is connected, and the

Figures 10 and 11 are sections along lines 10-10 and 11-11 in Fig. 8. "">

In Fig. 1 shows a tobacco feed belt TLO which constant speed in the direction indicated by the arrow

809 568/187

indicated direction is moved. The band 10 get a lot of tobacco over the leveling level where the

runs over end and intermediate rolls and is cut and removed by tobacco.

known drive rollers driven. The training and relative dimensions of the

At the tobacco dispensing end, the belt 10 is flat rail 22 and the blocks 28 is chosen so that the spreads out and picks up loose tobacco, the pressure required with 5 and the required equalization

approximately constant speed from a feed rate of the tobacco density at the leveling point

roller or other feeding means (not provided. The rail and the blocks cause

provided) is applied. The tobacco mass on the common that the belt has a tobacco feed channel

Band 10 forms a filling flow which has a single conical configuration with a tab-shaped cross-section continuous filling of a cigarette rod machine io forms, with the lower part bulging and through

feeds. An endless band of cigarette paper P is over a long narrow neck with the upper open part

guided a roller 14 which is arranged to be connected. At the in F i g. 2 point

picks up the tobacco stream when this from the belt 10 of the tobacco conveying channel a training in which

is delivered. The flow of tobacco then continues to be relatively large in the bulged lower part for wrapping and cutting into individual 15 and the neck is relatively short. In Fig. 3 is

Cigarettes transported, whereby these processes are all designed similarly to the tobacco conveying channel, the

run at the same speed of movement, but the arched lower part has a substantial

with which the tobacco stream is taken up. smaller cross-sectional area, and the neck is elongated

Between the flat course of the tape 10 and gert. The change in shape will be gradual and At the end of the delivery, the belt runs through a leveling device 20 continuously, so that the tobacco stream

device 16, which is a tape guide and form- more and more clumped together as he moves

device 18 and a rotating cutting knife approaches the leveling station.

20 has. The cutting knife is at the leveling. Due to the accumulation, the tobacco is mostly

or cutting station attached, the part of the tobacco conveying channel, which is booked in the middle

the length of the device 16 is provided. 25 printed and pressed into the neck under pressure, whereby

The forming device 18 forms a guide track, the tobacco in the neck of the upwardly pressing,

by the band edges bent upwards and further down lying tobacco mass an increased

be shifted inwards, so that it first opposes the resistance. Because the pressure in the lower

collect all tobacco in the middle of the belt part of the tobacco conveyor channel is steadily enlarged,

and then forcing the tobacco upward 30 will push the tobacco further up the throat and

and excess tobacco that is pressed over the through this to over the leveling edge,

effective level of the equalizing device protrudes. 'If there is a relatively large excess of tobacco

The guiding and shaping device 18 has a hand is something of the protruding tobacco

central rail 22, which has a concave upper at the beginning of the movement along the tobacco conveyor channel

Area 24 owns. The lateral guide bracket 35 and before a noticeable drag in the neck

Blocks 26 are pressed over the leveling line on opposite sides of that which has been produced.

Rail 22 attached. On each block 26 is a If the excess tobacco mass is small, however,

Block 28 arranged. Each block 28 has two-headed occurrences of early postponement of a considerable-

Adjusting screws 30 (not shown) through which a borrowed part of the tobacco mass over the leveling line

narrow deformable section 32 of the associated 40 is not on, but the entire tobacco remains

gene rail 28 is adjustable. below this line until the spaces are completely or

The rail 22 and the blocks 26 and 28 are almost entirely eliminated. In this context together the tobacco conveying channel and lead it should be noted that the tobacco when it is in Band 10. The screws 30 are removed to widen the tobacco feed channel pressurized and narrowing of the 45 filled by the band similar to a liquid, the pressure after all Tobacco conveyor channel provided, which may be necessary directions away from the point of greatest pressure, around the desired average amount of tobacco per plants. The tobacco in the denser sections of the To fine-tune cigarette. · Tobacco flow therefore exerts a counter pressure on the

It is essential that the tobacco stream not only include adjacent slack portions of the tobacco stream

on a certain cross-sectional area at the leveling 50, so that a different distribution is achieved and thus

siervorrichtung is tailored, but that he is a possible local defect in the tobacco stream

is also eliminated at the equalization point under a certain. The equalizing device 16,20 has

Pressure is so that the speed with which the one cutting wheel 34, which is at constant speed

Retained tobacco mass the leveling station speed according to FIG. 1 rotates clockwise, and

runs through, approximately the standard or normal Ge 55 on a cover plate 36, which together with the wheel

speed that is desired. It is man-working. A stationary mounting rail 38

no high pressure is required for this, but it must form a common holder for the shaft 40

Pressure should be so great that the tobacco mass in a grain of the wheel 34 and for the cover plate. The latter is

Compact shape is pressed than this is due to the fact that in its installation position on the rail 38 with two

Weight alone is the case. 60 screws 42 attached. The shaft 40 runs horizontally

The compression of the tobacco mass is therefore zontally at right angles to the direction of movement of the

important so that the tobacco weight in man- band 10 is too low. The cutting wheel 34 engages in the neck

chen areas is avoided, regardless of 44 between the upturned edges

that one with the smallest possible amount of tobacco of the band 10 a. The lower limit of the

get along at every point of the ^ tobacco stream 65 cover plate 36 runs flush with the leveling line,

seeks. If only the weight of the tobacco mass and the lower right or upstream

is effective, there may be voids in the tobacco stream or edge 46 is near the path of movement of the

At least-flaws occur, and these allow knife 48 of the wheel 34 attached. A concave,

5 6

surface of the ab- be lying in the upstream direction. When the tobacco is below the inclined cover plate runs in an arc in the vicinity of the base of the rail 60 more and more together-track the knife 48. The cover plate lies thereby being pressed, try the lower part and the between the two sides of the belt 10 and the side walls of the rail, the tobacco is frictionally bounded a mutual convergence of the tape edges. 5 kung on the more strongly pressed sections of the

The cover plate according to the invention has to hold back a stream of tobacco, so that the distribution of one-piece attachment part 50 in the form is also evened out here. The result is a press bar which approximately reaches the neck-shaped part that the tobacco reaches the leveling station, while 44 fills up to the leveling line and melts the tobacco as a whole into a strand with a certain cross-sectional area and keeps it in a compact state. The pressing io is narrowed and under an almost uniform rail 50 extends until it is below the predetermined pressure located downstream. When the tobacco is leveled or trimmed to the end of the rail 22 and blocks 26 and 28. The resulting tobacco integral channel block 52 adjoins the rail 22 and blocks 26 and 28 with substantially improved uniformity of filler mass and ease of distribution compared to the current, as it holds the band sides upwards and the 15 edge 10 α is recorded on.
Tobacco collected below the rail 50. As in the previous example, these are also here

half of the downstream end of the rail cutting wheel 34 α and the cover plate 36 α in 50, the tape 10 leads the tobacco to a press roller attached to its installation position, and the shaft 40 α and 54 over, which are 42 α with a transversely concave screw of the blocks 28 α is formed on the peripheral surface. This press roller presses 20 taken. The pressure rail 60 is laminated and the tobacco is not as strong as it is compressed in the cigarette consists of a U-shaped metallic component 64, but so that it assumes a strand-shaped and a filler plate 66. The side parts of the shape when he moves from the belt 10 to the U-shaped component 64, which reaches the level of the cigarette paper P. After passing through are reduced, on the cover plate 36 α in front of the forming station, the block 52 leaves the strip flat 25 and continues with a further filler course. After the transfer of the tobacco onto the plate 68, which forms a rear part, of the cigarette paper, the cigarettes are finished in the usual way, exerting the same effects as the rail 50. according to Fig. 1. Since the cutting wheel34α and the

The in the F i g. 4 to 6 shown embodiment cover plate 36 α between the side parts of the construction example according to the invention is in some respects 30 part 64 are, they are narrower than that by the band according to the F i g. 1 to 3 similar. As with the first established tobacco feed channel. The wheel removed in spite of the example, tobacco is applied on a tape. Almost all of the tobacco mass above the egali belt moves at a constant speed. The arrangement according to FIGS. 4 and 6 has and delivers the tobacco to a cigarette paper P α , also a grooved block 52 α and one that runs over the roller 14 α . The band 10 α is on 35 pressure roller 54 α , which is folded in its arrangement and in the edges inwards and upwards through the parts forming the operation of the corresponding parts according to the tobacco conveying channel, which are shown in FIG. 1 correspond.

a base rail 22 a, the side support blocks. The tobacco conveying channel component 64 also carries rigidly

26 a and the side guide blocks 28 α exist. arranged a pivot pin 70, which through the rail 22 α as before a concave upper 40 cover plate 36 α engages. In the example of FIG. 4 surface, but the channel has straight, vertical pivot pin 70 has no essential function walls which are shown in FIGS. 5 and 6. to meet, but it is only used for reinforcement A pressure rail 60 in the tobacco feed channel is on the screw 42 a. If the screws 42 α are removed from one of the side blocks 28 α with screws 62 and the shaft 40 α is rotated so that it does not secure that which extends above the path of movement of the belt 45 into the block 28 α , but rather on that of the 10th a are arranged. The pressure rail has a side facing the viewer protrudes, so the distance from the inner sides of the tobacco conveyor pivot pin 70 forms a common pivot bearing for the channel, which is determined by the belt thickness. The cover plate 36 α and the drive shaft 40 a, on the lower surface of the pressure rail 60, the cutting wheel 34 α is continuously seated. In this modified downwardly inclined, the height of the tobacco 50 embodiment, the cover plate 36 α and the conveying channel and thus the tobacco flow reduces the cutting wheel 34 α together upwards or when it reaches the cutting wheel 34 α . This can be adjusted downwards, so that the leveling line causes the tobacco to be raised or lowered more and more agglomerated, depending on the correction and is compressed, the cross-section setting, which is caused by an overweight or under-weight of the tobacco conveyor channel of a cross-section, such as It requires 55 weight for a large number of cigarettes. 5 is such near the insertion end of the channel. For this reason, the device is shown, on a cross-section similar to that shown in Fig. 7 with the device according to Fig. 4 Fig. 6 in the vicinity of the equalizing station, combined to 6,
is decreased. Are the screws 42 α removed and is the shaft

In this embodiment of the invention, 60 40 α can be rotated, so the bores 71 of a two narrow neck parts, each one on one side of the block 69 opposite the corresponding bores of the pressure rail, are provided through the cover plate, which was previously through the screws tobacco can be pressed above, if it were filled out in 42 a, aligned. The new screw channel has passed because the pressure rail ben inward are so large that they are spaced in the holes in the. A smoothing 65 cover plate will fit. The block 69 has a bearing arm 72 which is inclined at the bottom after the tobacco flow is also at the entrance of the channel and in which the shaft is reached, where tobacco accumulations are retained and 40 a of the leveling device is attached. The block used for filling in subsequent sinks 69 carries on the remote from the cover plate

7 8

A roller 74, which is formed on a normally stationary which is formed by the concave surface 24 δ, slides on the stationary cam disk 76. The cam insertion end is relatively wide and deep and in the disc 76 is tapered on the output shaft 78 of a servo width and depth when the equalizing motor 80 is attached. station where the trimming wheel 34 b arrives.

At a more distant place is a 5 is arranged. The lateral guide bracket blocks 26 b device available, which the manufactured cigarette are rigid on opposite sides of the rail th counts and weighs, with the weight of 22 b continuously attached. Fixed rigid blocks 90 are based on e.g. B. 25,000 cigarette fillings is weighed. After the blocks 26 b by a device (the wheel of a weight is not shown) attached and have adjusting screws 92 accumulator at the lowest value (a turn on which with the side guide blocks 94 corresponds to the tobacco weight of 1000 are cigarette screwed. the blocks 94 have massive ends, ten of the desired average weight) locked resting on the blocks 26 b, which in turn on and electrically coupled to the servo motor 80, so their upper surfaces carry a neck by that he shaft 78 and cam plate 76 is formed in the side rails 96. Every arrangement correspondence with its own phase position brings. 15 tion, consisting of a block 90, a guide

When the determined weight is below the bracket 94 and a rail 9.6 is by two desired total weights, brings the wheel of the screw 98 together. Each block 94 on the accumulator, which rotates clockwise, has massive end parts, which are connected to one another via a narrow deformit that increases the total weight, a protruding web 102,
the part of the cam plate 76 under the roller 74, 20 If the weight of a larger number of whereby the cutting wheel 34 α and the cover cigarettes, z. B. 25 000, much larger or flat 36 α are raised, the leveling level is lower than the normal or displayed weight, shifted upwards and the cross-sectional area of the screws 92 inwardly or outwardly retained tobacco stream is increased. The position is so that the deforming pressure, which is exerted on the webs greater the total weight, the further in the clock- 25 102, increased or decreased and clockwise removed is the position in which the cam- the lower part of the tape guide was in the vicinity 76 is rotated and the further down the leveling station is narrowed or widened, the part of the 'cam disk which is set for the next through a narrowing of the channel more tobacco counting process and is then effective. Then pressed over the leveling line, while the cam disk is readjusted and the channel is widened the opposite effect is separated from the weighing device, the counter and shows.

the weighing device is zeroed, and the blocks 94 and rails 96 are both normal

new counting as well as new weighing are designed in such a way that the appropriate construction time has been initiated. The details of the advantages converge when the equalizing station direction to drive the servo motor 80 form 35 is reached. The convergence of the blocks 94 deny Part of the invention, are not shown and acts that the lower part of the tobacco conveying channel can be appropriately trained. is narrowed, and the convergence of the rails 96

It is also possible to use the servo motor 80 and which causes the neck-shaped part of the tobacco conveyor to be automatic To omit control for it. Progressing in a canal and narrowing to a greater extent In such a case, the operator simply sets the ab- 4 °.

softening of the weight of the z. B. 25 000 cigarettes At the feed end of the tobacco feed channel are the

of the normal or medium desired weight, rails 96 are provided with beveled surfaces. Of the and then sets the cam to the required tobacco feed channel has the in the same angle forward or backward, see Fig. 10 and in the vicinity of the equalizing station in that the necessary correction is achieved. 45 Fig. 11 shown on. The change in the

8 and 9, a further embodiment outline and the reduction of the cross-sectional example of the invention is shown. This device surface occur gradually and approximately evenly zwiähnelt the devices already described, and see the sections of FIGS. 10 and 11 on.
the description is therefore mainly directed to the when a portion of the tape 10b in the tobacco distinguishing features. 50 conveying channel enters, it can hold the entire tobacco

As in the examples already described it takes. lead, if the tobacco but along the tobacco conveyor belt 10 b, the channel moves at a constant speed, it is guided over the belt edges over the end roller 12 b , tobacco with approximately progressively piled up. The tobacco above the uniform speed in the form of a flat belt edge then moves more slowly and ver-Tobacco flow and gives it to a cigarette 55 moves relative to the normal flow, so that the paper tape Pb, which represents a reserve at the tobacco transfer point, the in a following volume a role 14 is running. cut of the tape can be inserted, which is not

In this case, a leveling device 16 b is sufficiently filled.

a tape guiding and forming device 18 b and when the tape moves to the leveling station

a rotating cropping wheel 48 &. As the closed 60 is moved, the tobacco is arranged at the constriction between the cutting wheel 48 b approximately in the middle of the device see the surfaces 96 a of the rails 96 even more tightly. backed up, the tobacco mass lying deeper is widened

The device 18 b represents a guide through accumulated and compressed and takes its the band edges upwardly curved and upwards through the constriction, whereby the inside are displaced. 65 pushes tobacco upwards over the belt edges. the

The guiding and shaping device 18 b has a narrowing of the tobacco takes place lower down a central rail 22 b on which a transversely comparable progressively as the tobacco easy upward zwilaufende concave surface 24 b has. The groove, see the blocks 94 can be moved and

collects where the space between the blocks is wide; but the tobacco becomes with advancing Pressure relentlessly depressed as the neck narrows. The tobacco mass that is loose on the migrating tobacco flow is sustained by the stationary tobacco flowing between the blocks 94 has little tendency to exert pressure in the throat and in the underlying part of the To influence the current.

The generation of the internal pressure begins with a certain amount of tobacco below the leveling height and changes in the amount of tobacco shifted across the leveling line depend on its presence of gaps or gaps. If only a normal or standard amount of tobacco in the part of the tobacco stream to be considered is present, the pressure increase only begins shortly before the leveling station, and no tobacco is moved above the leveling height. If a proportionate When there is a large excess of tobacco, most of it escapes freely, but the pressure is released sooner developed than in the aforementioned case. More tobacco is passed through the bottleneck and in slightly higher pressure reached.

A stationary cover plate 108 is attached to the rails 96 behind the equalizing device and runs from the equalizing station to the discharge end of the tobacco conveying channel. The cover plate is held in its installation position by two screws 98. It has a convex downward rib 110, the inclined with the rails 96 forms slots 112 in which edge portions of the belt 10 can run b.

An existing one-piece channel block 52 b is in contact with the components 22 b, 26 b and 94 of the equalizing device 16 b. Elevated side walls of the block 52 hold the sides of the strip upwards to the tobacco to accumulate until a press roller 54 that has passed through b.

The cutting wheel 34 b has a plurality of knives 48 b and is mounted on a shaft 40 b . The shaft 40 b is mounted in a T-shaped bearing bracket 116 , the support arm of which is fastened in the upper end of a stationary stand 118 . The stand 118 is rigidly attached to one of the blocks 26 &. Although the shaft is inclined b 40, the knife of Fig. 9 are arranged so that they extend down and cut off the centerline of the belt, and their edges are positioned so that they intersect the upper inner edge of the rail 96 in greater detail lies on the viewer, with all points of the knife in contact with the rail. The rail 96 is hardened at least in the area that lies at the leveling station, so that it can serve as a stop plate for cooperation with the knives.

In each embodiment according to the invention, the one removed by the equalizing device Tobacco returned to the tobacco feed point with the aid of a device not shown.

Claims (5)

Patent claims: 1. Tobacco conveyor channel in a cigarette rod machine, with a leveling device for the Tobacco stream and a downstream, in front of the entry point of the cigarette paper band Press roller, characterized in that the press roller in a comparatively large Distance of about at least the pressure roller diameter arranged from the leveling device and between the leveling device and the press roller, a cover plate serving as a press surface is arranged for the open side of the tobacco conveying channel. 2. Tobacco conveyor channel according to claim 1, characterized in that the cover plate in the area the leveling device reaches right up to the leveling zone. 3. Tobacco conveying channel according to claim 1 or 2, with a rotating in the direction of the tobacco flow disc-shaped leveling agent, characterized in that the cover plate accordingly the orbit of the leveling agent concave and with a point (46) at the entry point of the equalized tobacco stream is formed. 4. tobacco conveying channel according to claim 1 or the following, characterized in that the cover plate is formed from two parts (36, 50). 5. tobacco conveying channel according to claim 4, characterized in that the equalizing agent adjacent part of the cover plate (36) around a pivot pin arranged on it (70) together with the leveling agent based on the test result of a conventional test device for the amount of tobacco flow towards and away from it is adjustable. Considered publications:
German Patent Nos. 843 076, 943 515;
U.S. Patent No. 2,660,178. 1 sheet of drawings 809 568/187 6.68 Bundesdruckerei Berlin