GARNITURE DEVICE AND A MACHINE AND A METHOD FOR MANUFACTURING MULTI-SEGMENT FILTER RODS
A garniture device for a machine used in tobacco industry for manufacturing a continuous rod comprising a loose material wrapped with a wrapper. The garniture device has an upper garniture part having forming parts for forming the wrapper around the loose material; a lower garniture part; a garniture duct extending along at least a portion of the lower garniture part; a garniture belt movable in the garniture duct for transporting the wrapper along the garniture duct. The garniture duct further has an inlet part for transforming the garniture belt from a flat configuration into a U-shaped configuration; an outlet part for transforming the garniture belt from the U-shaped configuration into the flat configuration; and a U-shaped part disposed between the inlet part and the outlet part for guiding the garniture belt in the U-shaped configuration.
The present disclosure relates to a garniture device, a machine for manufacturing multi-segment filter rods and a method for manufacturing multi-segment filter rods.
BACKGROUNDTobacco industry products, such as cigarettes, may comprise segment filters with various filtering materials, in particular loose materials, such as activated charcoal in a form of a loose granulate located between neighboring segments of a solid form. A segment with activated charcoal can be formed by placing the charcoal between the neighboring solid segments, which typically have a form of rod-like elements having filtering properties (for example segments made of acetate) or rod-like elements having non-filtering properties (for example paper pipes or other elements made of plastic). Manufacturers of filters comprising charcoal or other granulate materials aim for placement of portions of the loose material such that the space between the solid segments is filled up as much as possible, preferably in 100%. In such a filter, smoke passes through the filtering material, wherein undesired substances contained in the smoke are filtered out. In the filter wherein the spaces between the solid form segments is not sufficiently filled with the loose material, smoke may bypass the filtering material and pass through empty spaces present in the filter. Moreover, such a filter is prone to deformations in the region filled with the loose material.
A U.S. Pat. No. 411,602 discloses a device for compacting filtering segments containing charcoal granulate. One of its disadvantages is that the segments are deformed by a pin, which pushes an inner part of the segment made of filtering fiber into a charcoal segment which is not sufficiently filled, such as to eliminate an empty space.
A U.S. Pat. No. 6,656,412 discloses a device for increasing the degree of filling of a space located between segments with granulate. The granulate is introduced on two stations, wherein after each introduction it is pressed into the space between the segments. One disadvantage of such a solution is contamination of the product with the granulate and dust. Moreover, such solution occupies lots of space in the machine and therefore its application is problematic in modern machines, which are expected to have compact size.
A European patent application EP1293136 discloses a production machine for the tobacco industry, to produce continuous covered cylindrical lengths of hard filter materials or tobacco, has a format unit with side guide surfaces linked together by a curved guide surface. The guide surfaces form a contour on a plane at right angles to the direction of material movement through the unit. At least one side guide surface is asymmetrical before it reaches a vertical orientation.
A U.S. Pat. No. 4,185,645 discloses that cigarette filter units are made in a long strip with alternate portions of fibrous and pourable filter material. The fibrous portions are first attached at spaced intervals to a sheathing strip which is wrapped practically right around them to form a cylinder with regular empty spaces between the fibrous portions and openings into the spaces. In a special unit, air is extracted from these spaces so that when the spaces enter a chamber containing pourable filter material, they suck the material in to fully fill the spaces. Excess filter material is brushed off the filter unit, and a sealing strip is stuck over the openings.
There is a need to provide a device for manufacturing multi-segment filter rods with greater packing efficiency.
SUMMARYThe present invention is directed to a garniture device for a machine used in tobacco industry, and methods using the same.
In an embodiment, the device is used for manufacturing a continuous rod comprising a loose material wrapped with a wrapper, wherein the garniture device comprises: a lower garniture part; a garniture duct formed in the lower garniture part; a garniture belt movable in the garniture duct for transporting the wrapper along the garniture duct; an upper garniture part comprising forming parts for forming the wrapper around the loose material; wherein the garniture duct comprises: an inlet part for transforming the garniture belt from a flat configuration into a U-shaped configuration; a U-shaped part for guiding the garniture belt in the U-shaped configuration; an outlet part for transforming the garniture belt from the U-shaped configuration into the flat configuration. The U-shaped part of the garniture duct comprises, at the side of the inlet part, a first section having a first diameter and, at the side of the outlet part, a second section having a second diameter being smaller than the first diameter, wherein the first section is connected to the second section by a transition section having a surface of a variable diameter.
The transition section may have a conical surface. The first section and the second section can be arranged co-axially with respect to each other. Generating lines of the first section, of the transition section and of the second section can be located on a common plane.
The length of the transition section can be equal from about 30 to about 100 mm, preferably from about 50 to about 80 mm. The second diameter can be from about 1 to about 5% smaller than the first diameter, preferably from 2.5 to 3% smaller.
In an embodiment, the device is machine used in tobacco industry for manufacturing multi-segment filter rods, comprising: a garniture device; a feeding unit for arranging, longitudinally along an axis in a spaced-apart relationship, rod-like elements in a train on a wrapper transported on a garniture belt of the garniture device; a filling unit for supplying a loose material to compartments between the rod-like elements; a glue nozzle for gluing the wrapper around the loose material; a cutting head for cutting the continuous rod into multi-segment filter rods. In an embodiment, the garniture device includes a transition section of the duct of the garniture device is located at least partially between the filling unit for supplying the loose material and the upper garniture part.
In an embodiment, a difference of dimension of the first greater diameter of the garniture duct and the second smaller diameter of the garniture device is preferably same or less than an average grain size of a loose material.
Between the filling unit for supplying the loose material and the upper garniture part there can be located a cleaning unit for removing contaminations of the loose material from the rod-like elements, comprising at least one suction element for receiving contaminations of the loose material and covering elements displaceable to positions in which the covering elements at least partially cover compartments filled with the loose material between the rod-like elements during the movement of the train in a vicinity of the suction element.
The transition section can be located between the filling unit for supplying the loose material and the cleaning unit. The transition section can be located within the covering elements. The covering elements can be adapted to be located in a position in which a pressing surface of the covering elements is lowered with respect to the upper surface of the rod-like elements. The pressing surface of the covering elements can be lowered in the range of up to 1% of height of the rod-like elements.
An exemplary method embodying features of the present invention for manufacturing multi-segment filter rods, includes: arranging rod-like elements longitudinally along an axis, in a spaced-apart relationship, in a train on a wrapper located on a garniture belt; supplying a loose material to compartments located between the rod-like elements; decreasing a volume of the compartments located between the segments, wherein the compartments are partially filled with the loose material; applying glue to the wrapper and wrapping the wrapper around the rod-like elements and the loose material located in the compartments between the rod-like elements in order to form a continuous filter rod; and cutting the continuous filter rod into multi-segment filter rods.
Devices and methods using the same enable the manufacture of segments filled with a loose material, wherein the segments are filled up as much as possible. In an embodiment, the segments are filled up at least close to 100%. Furthermore, the present devices and methods provide a solution that does not cause significant contaminations of the rods with the loose material.
Claimed subject matter is particularly pointed out and distinctly claimed in the concluding portion of the specification. However, both as to organization and/or method of operation, together with elements, features, and/or advantages thereof, it may best be understood by reference to the following detailed description if read with the accompanying drawings in which:
Pressing surfaces 10a of the covering elements 10 touch the loose material 102 accumulated in the consecutive compartments between the rod-like elements S1, S2. The pressing surfaces 10a may be made of an air permeable or impermeable material, depending on the type of the loose material. The covering elements 10 are resilient, for example they may be made of rubber or a sponge-like material. Furthermore, the cleaning unit 104 is equipped with a suction element 12, preferably a suction nozzle, supplying negative pressure to the zone in which the covering elements 10 have contact with the loose material or enclose the loose material. The suction element 12 is intended to remove contaminations from the rod-like elements, i.e. particles of the loose material which fall on the surface of the rod-like elements S1, S2 in the preceding step, i.e. when the loose material is supplied from the filling unit 103.
The sections of the garniture duct 9a, 9c, 9b have respectively generating lines Y1, Y3, Y2 which are arranged in parallel with respect to each other on one common plane Z. Moreover, it is advantageous when the generating line Y1 of the section of the garniture duct 9a having the greater diameter, the generating line Y2 of the transition section of the garniture duct 9c and the generating line Y3 of the section of the garniture duct 9b having the smaller diameter, coincide with each other.
The cleaning unit 104 may be also located in front of the section L, in which the diameter of the garniture duct 9 is decreased, as shown in the second embodiment in
Another embodiment is shown in
Claims
1. A garniture device for a machine used in tobacco industry for manufacturing a continuous rod comprising a loose material wrapped with a wrapper, wherein the garniture device comprises:
- an upper garniture part comprising forming parts for forming the wrapper around the loose material;
- a lower garniture part;
- a garniture duct extending along at least a portion of the lower garniture part;
- a garniture belt movable in the garniture duct for transporting the wrapper along the garniture duct;
- the garniture duct further comprising: an inlet part for transforming the garniture belt from a flat configuration into a U-shaped configuration; an outlet part for transforming the garniture belt from the U-shaped configuration into the flat configuration; and a U-shaped part disposed between the inlet part and the outlet part for guiding the garniture belt in the U-shaped configuration, the U-shaped part having a first section disposed at the side of the inlet part and having a first diameter, a second section disposed at the side of the outlet part and having a second diameter being smaller than the first diameter, and a variable diameter transition section disposed between the first and second sections.
2. The garniture device of claim 1, wherein the transition section has a conical surface.
3. The garniture device of claim 1, wherein the first section and the second section are arranged coaxially with respect to each other.
4. The garniture device of claim 1, wherein generating lines of the first section, of the transition section and of the second section, are located on a common plane.
5. The garniture device of claim 2, wherein generating lines of the first section, of the transition section and of the second section are located on a common plane.
6. The garniture device of claim 1, wherein the length of the transition section ranges from about 30 to about 100 mm.
7. The garniture device of claim 1, wherein the second diameter is about 1% to about 5% smaller than the first diameter.
8. A machine used in tobacco industry for manufacturing multi-segment filter rods, comprising:
- a garniture device having an upper garniture part comprising forming parts for forming a wrapper around a loose material;
- a lower garniture part;
- a garniture duct extending along at least a portion of the lower garniture part;
- a garniture belt movable in the garniture duct for transporting the wrapper along the garniture duct;
- a feeding unit for arranging, longitudinally along an axis in a spaced-apart relationship, rod-like elements in a train on the wrapper transported on a garniture belt;
- a filling unit for supplying the loose material to compartments between the rod-like elements;
- a glue nozzle for gluing the wrapper around the loose material;
- a cutting head for cutting the continuous rod into multi-segment filter rods;
- the garniture duct further comprising: an inlet part for transforming the garniture belt from a flat configuration into a U-shaped configuration; an outlet part for transforming the garniture belt from the U-shaped configuration into the flat configuration; and a U-shaped part disposed between the inlet part and the outlet part for guiding the garniture belt in the U-shaped configuration, the U-shaped part having a first section disposed at the side of the inlet part and having a first diameter, a second section disposed at the side of the outlet part and having a second diameter being smaller than the first diameter, and a variable diameter transition section disposed between the first and second sections, and wherein the transition section is located at least partially between the filling unit and the upper garniture part.
9. The machine of claim 8, wherein a difference between the first diameter and second diameter is equal or less than an average grain size of the loose material.
10. The machine of claim 8, wherein a cleaning unit is disposed, between the filling unit and the upper garniture part, for removing contaminants of the loose material from the rod-like elements, comprising at least one suction element for receiving contaminants of the loose material and covering elements displaceable to positions in which the covering elements at least partially cover compartments filled with the loose material between the rod-like elements during the movement of the train in a vicinity of the suction element.
11. The machine of claim 8, wherein the transition section is located between the filling unit and the cleaning unit.
12. The machine of claim 8, wherein the transition section is located within the covering elements.
13. The machine of claim 8, wherein pressing surface of the covering elements is lowered with respect to the upper surface of the rod-like elements in response to pressure.
14. The machine of claim 8, wherein the pressing surface of the covering elements is lowered in a range up to 1% of a height of the rod-like elements.
15. A method for manufacturing multi-segment filter rods, comprising:
- arranging rod-like elements longitudinally along an axis, in a spaced-apart relationship, in a train on a wrapper located on a garniture belt;
- supplying a loose material to compartments located between the rod-like elements;
- decreasing a volume of the compartments partially filled with the loose material and located between the segments;
- applying glue to the wrapper and wrapping the wrapper around the rod-like elements and the loose material to form a continuous filter rod; and
- cutting the continuous filter rod into multi-segment filter rods.
16. A method for manufacturing multi-segment filter rods using a machine, the machine comprising:
- a garniture device having an upper garniture part comprising forming parts for forming a wrapper around a loose material;
- a lower garniture part;
- a garniture duct extending along at least a portion of the lower garniture part;
- a garniture belt movable in the garniture duct for transporting the wrapper along the garniture duct;
- a feeding unit for arranging, longitudinally along an axis in a spaced-apart relationship, rod-like elements in a train on the wrapper transported on a garniture belt;
- a filling unit for supplying the loose material to compartments between the rod-like elements;
- a glue nozzle for gluing the wrapper around the loose material;
- a cutting head for cutting the continuous rod into multi-segment filter rods;
- the garniture duct further comprising: an inlet part for transforming the garniture belt from a flat configuration into a U-shaped configuration; an outlet part for transforming the garniture belt from the U-shaped configuration into the flat configuration; and a U-shaped part disposed between the inlet part and the outlet part for guiding the garniture belt in the U-shaped configuration, the U-shaped part having a first section disposed at the side of the inlet part and having a first diameter, a second section disposed at the side of the outlet part and having a second diameter being smaller than the first diameter, and a variable diameter transition section disposed between the first and second sections, and wherein the transition section is located at least partially between the filling unit and the upper garniture part.
Type: Application
Filed: Mar 1, 2018
Publication Date: Jan 10, 2019
Inventor: Radoslaw Figarski (Odechowiec)
Application Number: 15/909,797