CZ126795A3 - Rotary device for supporting cut tobacco string - Google Patents

Abstract

The equipment consists of rotary supports (4) mounted on a rotary disk (2), which is mounted so that it can revolve on the fixed pin (11) mounted on the frame (1). On the fixed pin (11) there is a coaxially mounted cogwheel (15) and on the shafts (42) of the supports (4) there are cogged pinions (41). The rolling circles of the cogged wheel (15) and the pinions (41) are identical. Each pinion (41) is bent with the cogged wheel (15) by the cogged belt (6).<IMAGE>

Description

Technical field

The invention relates to a rotary device for supporting a cut tobacco strand, which consists of rotatably supported supports on a rotating disk.

BACKGROUND OF THE INVENTION

Increasing the power of the cigarette making machines has forced a retreat from the reciprocating movement of the support while cutting the tobacco rod and the application of the rotational movement of the supports rotatably mounted on the rotary disk. The circumferential distance between the individual supports determines the length of the cut tobacco rod. Due to the necessity of the agreement of the circumferential speed of the supports and the feed of the tobacco rod, it is possible to choose the number of supports on the rotary disc when solving the rotary device. The individual supports are interconnected by a planetary gearbox whose oil lubrication requirement makes it very demanding to seal the gearbox from the outside because it is necessary to prevent contamination of the tobacco rod with the lubricating oil and its vapors. The weight of this drive increases the demands on the drive and the overall robustness of the machine.

SUMMARY OF THE INVENTION

The rotary device for supporting the cut tobacco strand consists of rotatably supported supports on a rotating disc which is rotatably supported on a fixed pin mounted on the frame. A gearwheel is mounted coaxially on the fixed pin and toothed pinions are mounted on the shafts of the supports. The rolling circles of the gear and pinion are identical. Each pinion is with a toothed belt.

By arranging the transmission using the advantages of a toothed belt on a gear and pinion, a rotating device suitable for supporting the cut tobacco strand has been created, the supports of which have a cynematically determined position at the cut point. The whole device is characterized by low weight and operational reliability without the need for lubrication of the said transmission.

It is advantageous, especially if more sprockets are wrapped around the toothed belt, that from the outside the toothed belt is fitted with a tensioning pulley mounted on a rotating disc. The tensioner pulley guarantees adequate tensioning of the toothed belt &apos; s &lt;

From a technological point of view, it is advantageous for the gearwheel to consist of partial gearwheels.

Fixing the knife penetration gap when cutting the tobacco rod with a support composed of opposing segments and bolts attached to the pinion shaft is achieved by washers interposed between the segments and the shaft.

The description of the &quot; yrkrcge, ch

1 is a longitudinal cross-section of the rotary disk with supports, FIG. 2 is a detailed front view of the rotary disk with pinion and gear, and FIG. 3 is a partial cross-sectional plan view of the support.

Description of an exemplary embodiment

The rotary disk 2 is rotatably mounted on a fixed pin 11 mounted on the frame 11. The rotary disk 2, together with the drive pinion 5, is wrapped by a belt 13, to which the auxiliary pulley 14 is mounted rotatably mounted on the auxiliary pin 13 mounted on the frame 11. On the fixed pin 11, a gear 15 made of partial gears 15a is mounted coaxially. Tooth shafts 42 are mounted toothed pinion 41. Shafts. 42 are rotatably mounted in the rotary disk 2 in bearings secured by flanges 21. The rolling circles of the gear 15 and the toothed pinion 41 are identical. Each pinion 41 is wrapped with a toothed belt 6 with a toothed wheel 6. On the outside, a tensioner roller 22 adjoining the toothed belt 6 is adjustablely mounted on the rotary disk 11. Each of the supports 4 consists of opposing segments 43 by screws 44 attached to the shaft 42. Between the shaft 42 and any of the segments 43, a washer 45 of the required thickness may be inserted to achieve the desired gap between the segments 43.

In parallel to the plane of the rotary disk 2, but away from its axis of rotation, a tobacco strand T is fed. In the upper position of the support 4 with continuous rotation of the rotating disc 2, the tobacco strand T is supported by the support 4 and is cut transversely as a result of synchronizing the movement of the rotating knife (not shown). Upon cutting, the knife cuts the tobacco strand 7 as it passes through the gap between the segments 43. For a smooth operation of the device it is necessary to adjust it perfectly so that the synchronization of the movement of the individual parts is perfect. For this purpose, it is advantageous to divide the rotary disk 2 into a hub and a ring which can be rotated relative to each other and / or straight to each other. The individual pinions 41 are adjusted as required and then locked by a screw. This solution is not shown in the drawing. The toothed belt 6 tensioned by the tensioner roller 22, due to the nature of the transmission avoiding slippage, ensures that the relative position of the individual parts remains constant.

Patent

Claims (4)

A rotary device for supporting a cut tobacco strand, comprising rotatably supported supports on a rotary disk, characterized in that the rotary disk (2) is rotatably supported on a fixed pin (11) mounted on the frame (1), where the pinion (11) is coaxially fixed to the gear (15) and to the shafts (42) of the supports (4) are mounted toothed pinions (41) whose rolling circles coincide with the rolling circle of the gear (15), a toothed wheel (15) wrapped with a toothed belt (6). Rotary device according to claim 1 _, characterized in that the tensioning roller (22) is mounted on the outside of the toothed belt (6) on a rotating disc (2). '7 o Rotary device according to claim 1 or 2, characterized in that the gear (15) is composed of partial gear wheels (15a). Rotary device according to one of Claims 1, 2 or characterized in that each of the supports (4) consists. 4 opposing segments (43) with screws (44) attached to the shaft (42), wherein an adjusting washer (45) is inserted between the segments (43) and the shaft (42).