DE1242492B - Method and device for forming a cigarette rod - Google Patents

Description

JtS JUAiV JLi Ά U 1 SU

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

A24c

German class: 79 b - 12/10

Number: 1 242 492

File number: H 35430 111/19 b

Filing date: January 22, 1959

Open date: June 15, 1967

The main patent relates to a method for forming a cigarette rod from a tobacco stream, its uneven surface is leveled and the tobacco resulting from leveling is leveled as a partial stream of tobacco is fed to the uneven surface of the tobacco stream. The apparatus for practicing this procedure consists of a circumferential in a vertical plane, having two groove-like circumferential channels Conveyor and means for equalizing the tobacco stream and for transferring the equalizing accruing tobacco from one to the other, the tobacco partial flow promoting peripheral channel.

Since now when leveling the uneven surface of the tobacco stream comparatively only small amounts of tobacco incurred, offers the formation of a coherent partial stream of tobacco in the second circumferential groove Trouble. This second circumferential groove would have to have too small a cross-section as a result, so that a complete emptying of the same and a uniform supply of the partial stream of tobacco to the uneven surface of the tobacco stream would no longer be guaranteed.

The problem on which the invention is based is to avoid this.

According to the invention it is therefore provided that the partial flow of tobacco is reduced compared to the flow of tobacco Speed is moved. This can be done in the case of the aforementioned, to carry out the Said method serving device take place in that each of the two circumferential channels is arranged in a separate conveyor disk and the conveyor disks at different speeds are drivable.

It has been shown to be advantageous not to the partial stream of tobacco, as in the device according to the Main patent to hold by means of suction air in its groove-like channel, but in a known manner by means of Spines. Apart from the fact that thereby the necessary for a machine according to the main patent extraordinarily large amount of air significantly reduced and the construction of the two suction channels provided disc with the required suction chambers is considerably simplified, the feeding also takes place of the tobacco substream to the surface of the tobacco stream by the usual knocking out of the Tobacco fibers from the spines of the tobacco partial flow channel more evenly than by turning off the Suction air would be the case.

An exemplary embodiment of the invention is shown schematically in the drawing. It shows

F i g. Γ a view of a straight cigarette machine with low-lying distributor,

Method and apparatus for forming a
Cigarette rod

Addendum to the patent: 1,217,253

Applicant:

Dr. Kurt Koerber,

Hamburg-Bergedorf, Am Pfingstberg 10

Named as inventor:

Willy Richter, Hamburg-Bergedorf

F i g. 2 the two conveyor disks and their drive in cross section,

F i g. 3 shows a plan view of the leveling point in the area of the conveyor disks and

F i g. 4 shows a plan view of the conveyor disk in the area of the equalization point.

The strand cigarette machine consists of the usual deep distributor 7, the circulating in a vertical plane coaxially juxtaposed conveyor discs 9 and 9 α and, arranged under the distributor 7 tobacco conveyor belt 8. The conveyor disc 9 is about the tangential point of contact on the tobacco conveyor belt 8 forming tobacco mat a piece wrapped around the tobacco conveyor belt 8 reaching upwards. To return the tobacco conveyor belt 8, a reversing roller 10 is arranged.

On the circumference of the conveyor disk 9 there is a channel 16 consisting of two side walls and a floor under suction, into which the tobacco stream coming from the tobacco conveyor belt 8 is introduced and held by suction by the annular conveyor disk 9 on a non-illustrated one that remains in place Suction chamber moved past. The drive of the conveyor disk 9 with the groove 16 takes place according to FIG. 2, for example, by a double spur gear 39 via a gear 40. The double spur gear 39 is driven from the main drive of the machine via further gears, not shown.

To level out the uneven surface of the tobacco stream is in the upper area of the conveyor disc 9 a pair of star wheels 30 above the channel 16

709 590/115

arranged, which works with a rotating circular knife 31.

The second groove-like channel 17 for the partial stream of tobacco is provided on the circumference of the conveyor disk 9 α , which receives its drive from the same double spur gear 39 via a gear 41, so that the peripheral speed of the second conveyor disk 9 α is less than that of the first conveyor disk 9, whereby the groove-like channel 17 can be made sufficiently wide and still form a coherent stream in it.

To transfer the tobacco produced during leveling is a funnel-like wheel 30 below the star Collection container 32 is provided, which connects the channel 16 with the second groove-like channel 17, the bottom of which is covered with a spiked band 33.

To knock the tobacco out of the spikes of the spiked belt 33, a conventional combing brush 34 is provided at the intended delivery point in the lower area of the conveyor disk 9 a, and a guide channel 35 is provided below the combing brush to feed the combed tobacco to the surface of the tobacco stream located on the tobacco belt 8 .

The device works as follows: The tobacco stream supplied by the distributor 7 is pressed by the tobacco band 8 into the groove 16 of the conveyor disk 9 and held in this groove by suction air. When the tobacco stream passes under the pair of star wheels 30 and the circular knife 31, the surface of the tobacco stream is leveled. The tobacco produced in the process falls into the collecting funnel 32, is transferred by this into the second channel 17 of the conveyor disk 9 α and is carried along by the spiked belt 33 here. In the area of the delivery point above the tobacco belt 8, the tobacco is knocked off from the spiked belt 33 by the combing brush 34 and spread onto the tobacco stream located on the conveyor belt 8 by means of the guide channel 35.

Claims (4)

Patent claims: 1. Method of forming a cigarette rod from a stream of tobacco whose uneven surface leveled and the tobacco produced during leveling as tobacco partial flow of the uneven Surface of the tobacco stream is fed according to patent 1 217 253, characterized in that that the tobacco stream moves at a reduced speed compared to the tobacco stream will. 2. Apparatus for practicing the method according to claim 1 in a cigarette rod machine with a circumferential in a vertical plane, having two groove-like circumferential channels Conveyors and means for equalizing the tobacco flow, characterized in that each of the two circumferential channels is arranged in a separate conveyor disk and the conveyor disks can be driven at different speeds. 3. Apparatus according to claim 2, characterized in that the second groove-like circumferential channel Has the usual spikes to hold the tobacco stream. 4. Apparatus according to claim 3 with a means for transferring the at the leveling point removed tobacco into the conveying channel for the partial stream of tobacco, characterized in that the means for transferring is designed as a collecting funnel. Considered publications:
German patent specification No. 843 046. 1 sheet of drawings 709 590/115 6.67 Bundesdruckerei Berlin