DEM0018013MA - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Registration date: April 2, 1953. Advertised on October 27, 1955

GERMAN PATENT OFFICE

Tobacco cutting machines with upward and downward going knives that move in the direction of the Cutting device to cut off material to be cut guided to a mouthpiece are known. This Cutting devices perform a so-called guillotine cut. On the other hand, it is at Tobacco cutting machines known to use endless rotating band knives for cutting. These band knives were guided over two guide rollers, one in front of the mouthpiece were mounted rotatable about a horizontal axis frame. By rotating the frame the band knife was brought to the tobacco to cut. Achieving an even But the cut was not achieved because the pre-transfer of the knife band with its cutting edge took place in the arch on the material to be cut. So there was no vertical 'pulling cut'.

In contrast, the invention consists in the combination of an up and down in a known manner walking knife carrier with a well-known endless rotating band knife. This achieves that the band knife only faces the lower cutting edge of the material to be cut Trums cuts off the tobacco during the downward movement with a vertical pulling cut, where-

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M 18013 III 179 a

is achieved through an even, smooth and full cut. The performance of the cutting machine is increased significantly.

l) but it is iil'u, dal.! to achieve a guillotine selmitt the plane of the knife band to the vertical on the exit direction of the material to be cut tilted out of the mouthpiece.

Further features of the invention consist in the special design of the machine.
The invention can be carried out in various ways. It is illustrated in the drawing in an exemplary embodiment, namely shows

Fig. Ι schema) is a side view of the tobacco cutting device with the material to be cut led to a mouthpiece Fj,

Fig. 2 is a front view of Fig. I. Likewise shown schematically,

Fig. 3 the cutting device on a larger scale, partly in section,

see Fig. .j in a partial front view of the knife carrier and the knife band guide and
Fig. 5 a (! Outline for Fig. 4.
The tobacco cutting machine has a mouthpiece 10 to which the material to be cut 11 is fed, for example in a manner known per se, through a lower large, corrugated roller 12, above which several rollers 13 are provided for drawing in the tobacco. The upper part of the mouthpiece and the upper roller can be movable. The tobacco is fed in by means of known conveyor belts, not shown in the drawing.

According to the invention, the cutting knife that

works in front of the mouthpiece 10, through a knife carrier 14 going up and down Rolls 15 or the like. Guided endless knife band 16 is formed.

The unilateral plane of the band knife 16 with respect to Λνη knife carrier 14 is unchangeable, the knife band cutting the tobacco with a pulling cut only with the lower cutting edge of the strand facing the material to be cut during the downward movement. To achieve a guillotine shoe, the plane of the knife band 16 is inclined to the perpendicular to the exit direction of the material to be cut from the mouthpiece.

The knife carrier is made in a known manner by means of rocker arms 17 and push rod drive

5S moves up and down and is bilateral provided with l.bearing heads] 8 ", 18". In these are the drive shafts iy, 19 ,, which are also at an angle to the tobacco rod, are mounted, which carry the guide rollers 15 for guiding the endless knife band

16 wear. Above the bearing heads, the drive shafts 19, nj _u carry drive rollers 20, 21. The drive roller 21 drives the roller 20 by means of the pulling element 22, while it is itself driven by the pulling element 23 from the disk 24 of a drive motor 25.

On the knife carrier, as shown in Fig. 4 and 5, between the guide rollers 15 of the Knife band 16 lying guide block 26 arranged, which when cutting the tobacco rod absorbs the counter pressure on the knife band. The knife band is also on the upper guide strips 27 of the guide block 26 out.

Finally, the knife tape is still between the guide rollers by special, external contact Guide plates 28 secured against lifting. The guide block 26 is expedient adjustable on the knife carrier 14 in the vertical direction, for example by adjustable Retaining screws 29 can be effected. This makes it possible, by shifting the guide block, on the strips 27 of which the knife band 15 Facility finds that the knife band is pushed downwards and when it is worn it can be safely engaged to bring on the tobacco rod.

There is also a second drive motor on the knife carrier 14 30 arranged to drive a grinding wheel, which grinds the returning run of the knife band 15.

It is advantageous to have several adjusting screws 29 for the displaceable mounting of the guide block to be attached in order to bring about an even advance of the band knife on the guide rollers.

Claims (10)

PATENT CLAIMS: 1. Tobacco cutter init up and down going knife, characterized by the Combination of a knife carrier that goes up and down in a known manner with a known one endless revolving band knife. 2. Tobacco cutting machine according to claim 1, characterized in that the Umlaufebenc of the band knife is invariable with respect to the knife carrier, the knife band only with the lower cutting edge of the strand facing the material to be cut during the downward movement cuts the tobacco with a pulling cut. 3. Tobacco cutting machine according to claim 2, characterized in that to achieve a ^ Guillotine the plane of the Mcsserba ^ of the perpendicular to the exit direction of the material to be cut from the mouthpiece ge ^ tends is. 4. Tobacco cutting machine according to claim 1 to 3, characterized in that the carrier (14) moved up and down in a known manner by means of rocker arms (17) and push rod drive (18) is provided with bearing heads (i8 ", i8 ₆ ) in which inclined to the tobacco rod arranged drive shafts (19, 19 ,,) are mounted, which carry the guide rollers (15) for guiding the endless knife band (16) below the knife carrier (14) and above the bearing heads have driving rollers (20, 21). 5. tobacco cutting machine according to claim 1 to 4, characterized in that the drive the knife bands (16) from a motor (25) attached to the knife carrier (14) via a endless pulling element (23) takes place, the 577 293 M18013 HI / 79a other drive shaft can be driven by a second, endless pulling element (22). 6. Tobacco cutting machine according to claim 1 to 5, characterized in that on the knife carrier (14) a between the guide rollers (15) of the knife band (16) lying guide block (26) is arranged, which when cutting of the tobacco rod absorbs the counter pressure on the knife band. 7. tobacco cutting machine according to claim 1 to 6, characterized in that the knife band is guided on upper strips (27) of the guide block (26). 8. tobacco cutting machine according to claim 1 to 7, characterized in that the knife band (16) between the guide rollers (15) by special, external guide plates (28) is secured against lifting. 9. tobacco cutting machine according to claim 1 to 8, characterized in that the guide block (26) between the guide rollers (15) on the knife carrier (14) adjustable is. 10. Tobacco cutting machine according to claim 1 up to 9, characterized in that a second drive motor (30) on the knife carrier (14) to drive a grinding wheel (31) is arranged, which the returning strand of the Sharpen the knife band (16). Referred publications:
German patent specification No. 676 704. 1 sheet of drawings