DE966859C - Tobacco cutting machine - Google Patents

Description

ISSUED SEPTEMBER 12, 1957

M19104 HI I / p <a

Varel (Oldbg.) G.m.b.H.,

Tobacco cutting machine

Tobacco cutting machines with towards the cutting device to one. Mouthpiece guided material to be cut, with several rotating circular knife disks, which are mounted on a rotatable knife carrier, in a plane on the mouthpiece for cutting off the material emerging from it. Tobacco rod can be transported over are known. In the case of machines of this type, according to the main patent, the knife carrier or the knife disks can be displaced and continuously fed to the mouthpiece.

In another Attsführungform of tobacco cutting machines it is known to attach two sickle-shaped knives to a knife disc and the continuous feed of these cutting discs using, gears, of to cause an engine off. These are special = · Intermediate shafts, starting from the drive means and intermediate gear, required. ..,. ...'.-

The invention solves the problem of the drive from a variety nachednandei? to the effect upcoming circular knife disks and their, automatic delivery. . ·. -. ,, -,. ,, ...

The invention consists in that; die.-shift availability of the knife carrier shaft directly from whose rotary drive is derived.

This creates an extremely simplified delivery device. · Ättch; ., eier cut and feed are / -adjustable ../, Γ- _{:. :} ., -,

709 671/2

The special design of the feed drive is also new and advantageous.

It is also advantageous that the last worm drive shaft of the reduction gear of this can be uncoupled by releasing a clutch and as a ^ The knife carrier shaft can then be shifted via this shaft by means of a manual drive is.

Thus, the friction clutch is temporarily accomplished by ¹ can also manually adjust the feed using the solvability. In particular, it is possible to move the knife carrier shaft in the fore and aft direction by hand.

The invention is illustrated in the drawing in one embodiment, namely Fig. Ι shows a schematic view of a knife carrier with knife carrier drive shaft and Schneidgutrorschub, partially in section, and Fig. 2 is a schematic plan view of Fig. 1, the layered in the packing room 10 goods is fed to the mouthpiece 13 by the conveyor belts 11, 12. The drive of the belts, which are guided over rollers 14, 15, via gears, for example, a continuously variable transmission 16, and further gear parts 17. By eine'Kupplung 18 of the machine drive i6 ₀ can be turned off and now by placing a hand crank 19 to the Shaft 20 of the Zwrschengetriebes the feed can be operated by hand forwards and backwards. The use of a stepless, especially under the trade name PJV. known drive mechanism 16, for example in the control range of 10: i, enables any desired tobacco feed and thus any cutting length, for example in the range from 0.1 to 0.7 mm, can be continuously achieved.

The feed of the product is completely independent of

^{the knife carrier 4} -shaft 22 carrying the knife carrier 21. This knife carrier shaft is also operated variably by a continuously variable transmission 23 in the control range of 2: 1 with variable numbers from η = 160 to 200 per minute.

This enables the knife carrier drive to adapt to the different cuttability of the various items to be cut or, however also vary the performance.

The drive of the knife carrier shaft 22, which lies in a stationary bearing housing 27, which is supported, for example, on the usual machine frame of the cutting machine, in which at the same time the shafts. for the transport rollers 14, 15 are mounted, takes place from the special drive motor 28 via the continuously variable transmission 23 by means of the pulling elements 29 and the disengageable pulley 29 _a .

On the knife carrier 21 are in bearings 24 advantageous

. For example, on the knife carrier near the circumference of the same, there are four circular knife disks25 - each at a distance of

90 ⁰ arranged. ·· - ■ - ■■■ - ..

The use of the plate-shaped knives, in particular due to the necessary constant regrinding of the knives, requires a constant, even axial displacement of the knife carrier shaft 22 for the cutting position of the circular knife shafts 25 to the MuiMl · piece 13 Balls, mounted rotating shaft 22 are held in the longitudinal direction by a threaded bushing 30 which can be screwed into the thread 31 of the housing bushing 32. The threaded bushing 30 receives its output from the knife carrier shaft 22 which can be coupled _{to the disk 29 O by the disengageable clutch 33;} which carries a worm 34 which drives the worm wheel 35. The worm 40, which engages in the worm wheel 41, is driven by the shaft 36 of the worm wheel 35 via the gear drives 37, 38 of the intermediate shaft 39. The worm wheel 41 forms part of the displaceable threaded bushing 30 or is fixedly connected to it.

The displaceability of the knife carrier shaft is thus derived directly from its drive 29, 33.

The storage of the intermediate gear ^ can be on the housing, but optionally also on the displaceable Knife carrier shaft itself. Since the displacement of the knife carrier shaft 22 is relatively is low, it is also possible to equip the worm wheel 41 with straight teeth, in order to move / be able to move it across the worm. Through the threaded bushing 30 with a collar is provided, the longitudinally displaceable knife carrier shaft 22 is also displaced via the ball bearings.

The shaft 42 of the worm 40, which receives its drive from the loosely attached gear wheel 38, can be coupled from the handwheel 44 by means of a clutch, for example a conical friction clutch 43. If this coupling is released, then the screw axis 42 of the screw can optionally be opened Actuate 40 aaich from handwheel 44.

For this purpose, a toggle nut 45 is advantageously provided for the handwheel 44 through which the clutch is switched on: This makes it possible, if necessary, to manually open the knife carrier shaft 22 to move forward and backward.

The shaft »of the circular knife disks can be in be arranged in a known manner in such an inclination on the knife carrier that the cutting knife in Inclined position can be moved past the mouthpiece "5 are. This is particularly beneficial when one flat circular knife disks. applies. Even with those. It is then important " that accordingly; the wear and tear of the circular knife series when sanding down. axial advance thrust in; Direction towards the mouthpiece takes place.

Claims (4)

Claims:. i. Tobacco cutting machine with in direction "" "" · 'open' 'the cutting device: closed. one mouth day ■■■ piece; 'led; Food to be cut ;: in the case of several mounted on a rotating knife carrier, rotating, single drive having circular knife disks in a plane on the Mouthpiece - can be moved over and moved against the '5 mouthpiece and depending on the abrasion are continuously deliverable, according to patent 909 425, characterized in that the displaceability of the knife carrier shaft (22) directly from their. Rotary drive (29, 33) is derived. 2. Tobacco cutting machine according to claim 1, characterized in that the one Motor (28) driven knife carrier shaft (22) mounted displaceably in a housing (27) is and by threaded spindle and transmission gear, especially worm gear (35, 40) and reduction gear (37, 38, 39) moved during their rotation will. 3. Tobacco cutting machine according to the anao Proverbs 1 and 2, characterized in that the last worm drive shaft (42) of the reduction gear can be uncoupled from this by releasing a coupling (43) and then. ' This shaft (42) is used to shift the knife carrier shafts (22) by means of a manual drive (44) is feasible. 4. Tobacco cutting machine according to claims ι to 3; characterized in that the displaceable knife carrier shaft (22) is connected to a displaceable threaded spindle (30) which can be rotated with respect to the knife carrier shaft (22) and which can be driven by the latter. Considered prints:
German Patent No. 496,800;
British Patent Nos. 410 174, 437272. For this purpose, 1 sheet of drawings @ 609708 / »tt.56 (BB StVZ 4 57)