CN1613389B - Device and method for processing at least two fiber slivers - Google Patents

Abstract

The invention describes a device and a method for substantially simultaneously processing at least two fiber rods (8) of the tobacco industry, in particular for processing cigarette tobacco rods, wherein the fiber rods (8) are guided simultaneously at a distance from each other To a cutting mechanism (12), and cut in this cutting mechanism (12). The invention is characterized in that the fiber strips (8) are guided in the direction towards the cutting mechanism (12) such that the distance between the fiber strips is reduced to a given minimum value in front of the cutting mechanism (12) .

Description

Device and method for processing at least two fiber slivers

technical field

The invention relates to a device for processing at least two tobacco rods (Faserstrang) substantially simultaneously, in particular for processing tobacco rods, the device having a cutting mechanism for cutting the fiber rods and a device for The fiber strands are guided simultaneously at a distance from one another to the guide means of the cutting means. Furthermore, the invention relates to a method for substantially simultaneously processing at least two fiber rods of the tobacco industry, in particular for processing cigarette tobacco rods, wherein the fiber rods are simultaneously guided at a distance from one another to a cutting mechanism, and Cutting in the cutting mechanism.

Background technique

Cutting the sliver by a cutting mechanism into small pieces of equal length for forming cigarettes etc. has problems with the cutting quality, material fatigue of some mechanical parts and noise formation as the sliver speed increases due to dynamics.

Contents of the invention

Therefore, the object of the present invention is to improve the above-mentioned device and method as much as possible, so that the above-mentioned problems can be better solved.

According to the first concept of the present invention, this object is solved by a device for processing fiber rods of at least two tobacco processing industries at the same time, especially for processing cigarette tobacco rods, which has a device for cutting fiber rods. A cutting mechanism and a guiding mechanism for simultaneously guiding the fiber sliver to the cutting mechanism at a distance from each other, characterized in that the guiding mechanism is configured such that during the movement of the fiber sliver, the The spacing between them is reduced to a given minimum in front of the cutting mechanism.

Furthermore, the aforementioned object is solved according to a second concept of the present invention by a method for substantially simultaneously processing fiber rods of at least two tobacco processing industries, in particular for processing cigarette tobacco rods, wherein the fiber rods are guided simultaneously at a distance from one another to the cutting mechanism and cut in the cutting mechanism, characterized in that the fiber strips are guided in the direction towards the cutting mechanism such that the distance between the fiber strips is reduced to a given minimum value in front of the cutting mechanism .

A tight packing of the fiber strands in the cutting area is thus achieved by the invention. As a result, problems with the cutting quality, material fatigue of certain mechanical parts and noise generation that occur in the cutting mechanism with increasing fiber sliver speed can be reduced or even completely overcome.

The distance between the fiber strips is preferably kept constant after reaching a predetermined minimum value, so that the fiber strips pass through the cutting mechanism with a constant minimum distance.

The guide generally has a plurality of conveying sections, each of which is associated with a fiber sliver, and a conveying mechanism for conveying the fiber sliver along mutually spaced conveying sections to the cutting device, wherein The distance between the conveying sections along which the fiber strip travels decreases to a given minimum value in the direction of the cutting mechanism in front of the cutting mechanism.

In the case where the guide mechanism has a profiled mechanism, it is advantageous to design the profiled mechanism in such a way that during the movement of the fiber strands the distance between the fiber strips is reduced to a given minimum value. For this exemplary embodiment, therefore, the distance between the strands is reduced in the interior of the shaping device, which is also commonly referred to as a shaper. In a preferred embodiment, the shaping device has a plurality of surrounding shaping belts, wherein each of the shaping belts is assigned to a conveying section, so that the distance between the shaping belts is in the direction of the cutting mechanism. The front is reduced to the given minimum value.

Typically, this forming mechanism is used to wrap the fiber strip with a wrapping material. In such a case it is preferred to construct the forming mechanism such that the spacing between the fiber strips is reduced from a given maximum value at least corresponding to the width of the wrapping material to a given minimum value which is less than the wrapping width. The width of the material.

In a further development of the above-described exemplary embodiment, the distance, viewed in the direction of movement of the fiber sliver, remains constant behind the forming device, so that the fiber sliver emerges from the forming device at this constant minimum distance.

Description of drawings

A preferred embodiment of the invention will be described in detail below with the aid of the drawings. The accompanying drawings show:

Figure 1 is a schematic side view of a known Doppelstrangmaschine for processing cigarettes,

FIG. 2 is a plan view of the twin-sliver machine from FIG. 1, in which the fiber sliver guide embodied in the manner according to the invention can be seen.

Detailed ways

A two-bar machine for processing cigarettes is schematically shown in FIGS. 1 and 2 . According to the drawings, the processing of the tobacco rods proceeds from right to left in the direction indicated by arrow A in FIG. 2 , which simultaneously indicates the conveying direction of the tobacco rods.

The first step of forming the fiber strand is carried out by vacuum-loading the surrounding fabric belt 2 in a housing 1 , which is usually designed as a suction belt and is driven by a drive mechanism (not shown). As can be seen from FIG. 2, the two fabric strips 2 run parallel to each other at a selected distance which is determined by the maximum width of the wrapping paper to be applied next. Said fabric belt 2 conveys the tobacco rod 3 via shaped fingers (Fingers) 4 which are slightly inclined relative to each other at a given angle, thereby obtaining a non-parallel flow along the two conveying sections I and II. The fiber strands move with a pitch that decreases with increasing distance from the fingers 4 .

The fingers 4 then wrap the tobacco rod along its conveying sections I and II with wrapping paper, which is drawn as a strip 5 from a drum or reel 5a and fed to the tobacco rod. The wrapping takes place in a forming machine part, also referred to as a former 6 , in each case by means of a forming fabric belt 6 a, as can be seen in FIG. 1 . The two forming fabric belts 6a are designed as conveyor belts that run around along the conveyor sections I and II and are driven by a drive mechanism (not shown). As can also be seen from FIG. 1 , the wrapping paper 5 rests against the forming fabric 6 a , while the fingers 4 transport the tobacco rods onto the wrapping 5 . The strip-like movement of the conveying sections I and II is designed in the former 6 in such a way that the wrapping paper strip 5 is laid around the tobacco rod during a further movement.

Furthermore, a drying section 7 is provided in the former 6 , which dries the glue trace previously applied to the wrapping paper 5 for bonding the wrapping paper 5 wrapping around the tobacco rod during its passage.

The fingers 4 , the forming fabric belt 6 a , the drying section 7 and the conveying sections I and II are thus integral parts of the former 6 .

During the wrapping and drying state, the two fiber strips pass through the shaper 6 symmetrically and non-parallel, and the spacing between the conveying sections I and II decreases with increasing distance from the finger pin 4, as shown in FIG. 2 Show.

In the former 6, relatively stable paper tubes 8 filled with tobacco rods are thus produced, which, after exiting the former 6 and having a sufficient distance therefrom, pass through guides 9 arranged in parallel surrounding the fiber rods. Forced into a parallel running mechanism 10, where they are conveyed at a constant minimum distance from one another. The minimum distance here is smaller than the distance at the fingers 4 determined by the maximum width of the wrapping paper. Before the paper tube 8 filled with tobacco rods is conveyed on to a downstream processing device 14, it first passes through the inspection mechanism 11 with a constant minimum distance, and then passes through a cutting mechanism 12, in which the paper The barrel is cut into small pieces of equal length in order to form individual cigarettes.

Due to the close packing of the two fiber strands, the cutting mechanism 12 can be used particularly effectively without impairing the cutting quality even at relatively high fiber strand speeds.

Claims (10)

1. device that is used for processing simultaneously the ribbon (8) of at least two the tobacco industries, this device has the cutting mechanism (12) and the guide that is used for ribbon (8) is directed to spaced reciprocally simultaneously this cutting mechanism (12) that are used for cutting fibre bar (8), it is characterized in that, described guide make ribbon (8) between moving period along make the spacing between the ribbon be reduced to a given minimum of a value towards cutting mechanism (12) direction in cutting mechanism (12) front.

2. device as claimed in claim 1, wherein guide has a plurality of transportation section (I, II) and conveying mechanism, in the described transportation section each is attached troops to a unit respectively in a ribbon, described conveying mechanism is used for that (I II) is transported to cutting mechanism (12), it is characterized in that along the transportation section of space with ribbon (8), (I, II) spacing between is reduced to given minimum of a value along the direction towards cutting mechanism (12) in the place ahead of cutting mechanism (12) in described transportation section.

3. device as claimed in claim 1 or 2, wherein guide has the mechanism of a moulding, it is characterized in that the mechanism of described moulding makes and is reduced to given minimum of a value along the spacing between the direction ribbon of cutting mechanism (12) in cutting mechanism (12) front at ribbon (8) between moving period.

4. device as claimed in claim 3, wherein the mechanism of moulding have a plurality of around typing band (6a), one of them typing band is attached troops to a unit respectively in a transportation section (I, II), it is characterized in that the spacing between the described typing band (6a) is reduced to given minimum of a value along the direction towards cutting mechanism (12) in cutting mechanism (12) front.

5. device as claimed in claim 3, wherein the mechanism of moulding has lapping (5) in order to wrap up ribbon (8), it is characterized in that the given minimum of a value of the spacing between the described ribbon (8) is less than the width of lapping (5).

6. device as claimed in claim 5 is characterized in that, the spacing between the described ribbon (8) is reduced to given minimum of a value corresponding to the given maximum of the width of lapping (5) at least from one.

7. device as claimed in claim 1 is characterized in that described spacing remains unchanged after reaching minimum of a value.

8. device as claimed in claim 3 is characterized in that, described spacing is observed on ribbon (8) moving direction and remained unchanged in the mechanism back of moulding.

9. method that is used for processing simultaneously the ribbon (8) of at least two the tobacco industries, wherein said ribbon (8) is directed to a cutting mechanism (12) and cutting in this cutting mechanism (12) spaced reciprocally simultaneously, it is characterized in that, described ribbon (8) guides like this along the direction towards cutting mechanism (12), makes the spacing between the ribbon be reduced to a given minimum of a value in cutting mechanism (12) front.

10. method as claimed in claim 9 is characterized in that, described spacing remains unchanged after reaching given minimum of a value.

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