CN102333460A

CN102333460A - A unit for feeding a flow of tobacco particles in a cigarette maker

Info

Publication number: CN102333460A
Application number: CN2009801576720A
Authority: CN
Inventors: F·曼戈利; U·詹尼笛
Original assignee: GD SpA
Current assignee: GD SpA
Priority date: 2009-02-26
Filing date: 2009-12-17
Publication date: 2012-01-25
Anticipated expiration: 2029-12-17
Also published as: EP2400863A1; CN102333460B; JP5580343B2; JP2012518426A; ITBO20090110A1; IT1398602B1; WO2010097661A1; EP2400863B1

Abstract

A flow of shredded tobacco particles is fed through a cigarette maker by a unit that comprises an ascending chimney (15) enclosed at the top end by at least one aspirating conveyor belt (25), on which the flow (4) of particles is formed into a stream (6) of tobacco filler; the ascending chimney (15) is delimited laterally by two side walls (22, 23) creating a restriction (29) at an intermediate position, dividing the chimney into a lower portion (27) and an upper portion (28). The lower portion (27) of the chimney (15) incorporates a pneumatic blending system (31) acting on the flow (4) of tobacco in such a way as to ensure a uniform distribution of the shredded particles.

Description

Be used for presenting the feed unit of tobacco particle stream at cigarette manufacturing machine

Technical field

The present invention relates to be used for presenting the feed unit of tobacco particle stream at cigarette manufacturing machine.

Background technology

Cigarette manufacturing machine generally includes the hopper that comprises a large amount of pipe tobaccos.

Tobacco is delivered to the top inlet end of descending conduit or skewed slot from hopper through comb unit; Be received in the bottom end position of conduit then through pneumatic and/or mechanical transmission device, for example can continuous tobacco particle stream be guided to by in the up conduit or chimney of being arranged to two parallel basically vertical sidewalls demarcation.

In the single track cigarette manufacturing machine, the top of up chimney is sealed by air-breathing conveyer belt, and this conveyer belt is formed by ventilative fabric and advances through the direction of the flow of tobacco direction of chimney in rising along substantial lateral.

The pipe tobacco particle that folder attaches in the ascending air that in the base portion of up chimney, is produced is forced to and upwards passes through identical chimney, and is finally drawn by absorbing gas belt, and these pipe tobacco particles little by little are collected on this absorbing gas belt to form pantostrat or continuous thread.

Outside up chimney, the tobacco thread is centered around in the paper wood strip and is shaped as continuous cigarette rods, and through rotating cutter sweep, this continuous cigarette rods can be divided into single cigarette sticks subsequently.

In the situation of double track cigarette manufacturing machine, the top of chimney has the resolution element of ovoid in cross-section, and this resolution element is placed to tobacco particle stream is divided into two parts, and these two parts little by little form corresponding thread on two air-breathing conveyer belts.

With the mode identical with the machine of above-mentioned monorail type, these threads are shaped as corresponding continuous cigarette rods, and are divided into single cigarette sticks by identical cutter sweep.

Therefore, tobacco particle stream is presented through machine through the unit of being made up of descending conduit and up chimney, and descending conduit and up chimney are connected to each other through above-mentioned transport.

Owing to have the uneven distribution of the tobacco particle of different physical characteristics (weight and size), thereby tobacco particle stream is not always uniform fully when getting into up chimney.

In the single track machine, this can form the thread with the uneven degree of depth and weight, and will carry out definitely hereinafter in the double track machine of reference, and the degree of depth of two threads and weight can differ from one another.

Because this shortcoming, this becomes and can't produce cigarette rod equably, and extension ground can't output and the cigarette that is complementary by the specified tighter tolerances of manufacturer.

Find, especially in modern times under the situation of the high service speed of cigarette manufacturing machine (more than per minute 20,000 cigarette), the uneven distribution of tobacco particle the reducing gradually that be attributable to rise through the air velocity of up chimney.

In fact, be enough to folder in the air velocity of chimney bottom and echo the guiding flow of tobacco, and at the top, air velocity specifically reduces owing to the cross section of chimney broadens near absorbing gas belt the time.

This shortcoming is especially influential to the less tobacco particle with less kinetic energy, and can't overcome through the initial velocity that increases air-flow simply, but for example can realize through the suction that increases air-breathing conveyer belt.

In fact, the speed of ascending air can't increase to and exceed some limit value, otherwise the tobacco thread is can be excessively compact and be pressed against conveyer belt devastatingly, and tobacco particle is crushed.

Summary of the invention

The purpose of this invention is to provide a kind of feed unit that is used to present the continuous tobacco grain flow, and this feed unit for example can not have above-mentioned shortcoming.

The said purpose that is realized according to the present invention is a kind of feed unit that is used to present the continuous tobacco grain flow, and the characteristic of this feed unit is documented in one or more accompanying claims.

Description of drawings

To describe the present invention by way of example in detail by accompanying drawing at present, in these accompanying drawings:

Fig. 1 schematically and with cutaway view illustrates the part of the cigarette manufacturing machine that comprises feed unit of the present invention, and for the sake of clarity excises some parts;

Fig. 2 schematically illustrates machine shown in Figure 1 with front view;

Fig. 3 illustrates the enlarged detail of Fig. 1;

Fig. 4 illustrates the enlarged detail of Fig. 3;

Fig. 5 is in the details of Fig. 1 shown in the second possibility embodiment;

Fig. 6 is in the details of Fig. 1 shown in the 3rd possibility embodiment.

The specific embodiment

Referring to Fig. 1 and Fig. 2, Reference numeral 1 indicates the machine that always comprises the double track cigarette manufacturing machine.

Or rather; Machine 1 comprises first 2 and second portion or has the unit 5 of traditional embodiment; This first is as feed unit; And a large amount of pipe tobaccos that remain in the storage hopper 3 are discharged and are transmitted as continuous tobacco grain flow 4 by this first 2, and this tobacco particle stream 4 forms two

continuous threads

6 and 7 through this second portion.

Referring to Fig. 3, machine 1 also comprises the opium pipe unit of the square that shows that schematically work is indicated by Reference numeral 8, and two

tobacco threads

6 and 7 are two continuous cigarette rods 9 through this opium pipe unit forming.

Show schematically that through making work is divided into single cigarette sticks 11 by the cutter sweep rotation of square that Reference numeral 10 indicates with continuous cigarette rods 9.

The feed unit 2 that transmits continuous tobacco grain flow 4 comprises descending pipeline or skewed slot 12; The top of this descending pipeline or skewed slot is connected in hopper 3 by the comb unit that is equipped with carding roller 14 13, and this carding roller can wind the horizontal axis 14a rotation perpendicular to view plane shown in Figure 1.

Feed unit 2 also comprises riser duct or chimney 15; This riser duct or chimney are aligned on the basic vertical longitudinal axis that is designated as 15a; And the bottom inlet end 16 of this riser duct or chimney is connected with the port of export 17 of descending conduit 12 by transport 18, and transport 18 comprises the supply unit 19 that transmits tobacco particle stream 4.

The axis that is designated as 12a of descending conduit tilts with respect to vertical line, to become the acute angle of preset width with the axis 15a of the perpendicular of descending chimney 15.

Supply unit 19 comprises a pair of 20 and 21 the spike(d) roller that is designated as, and this is arranged to make axis parallel with the axis 14a of carding roller 14 to spike(d) roller, and as shown in Figure 1 this rotates spike(d) roller basically tangent to each otherly and rotate counterclockwise.

A roller 20 pick up the tobacco that descends from comb unit 13 at the port of export 17 places of descending conduit 12 through this conveyer, and another roller 21 is used as propeller as conveyer, and tobacco is directly upwards dropped in the rising chimney 15 through this propeller.

Riser duct 15 is by two

sidewalls

22 and 23 demarcation, and at top exit end place by a pair of air-breathing conveyer belt 24 parallel to each other and 25 sealings,

aforementioned tobacco thread

6 and 7 is assembled on to air-breathing conveyer belt and is transmitted at this.

Two the air-breathing

conveyer belts

24 and 25 that form the part of second unit 5 are set for along perpendicular to view plane shown in Figure 1, also move perpendicular to the direction of the axis 15a of chimney 15 thus, and are preferably formed by the breathable fabric material.

Unit 5 also comprises the resolution element 26 of traditional type, this resolution element place between

conveyer belt

24 and 25 and direction towards the inside of rising chimney 15, and have avette profile and comprise the rod that its parallel axes is extended in two

conveyer belts

24 and 25.

Sidewall

22 and 23 rises towards the top from base portion convergence ground, and the distance of first bottom 27 through covering chimney 15 after this through covering the distance on second top 28, to produce the restriction 29 that overlaps with mid portion with dispersing.

This machine 1 also comprises pneumatic means 30, and this pneumatic means 30 is positioned at import 16 places of chimney 15, and air communication is crossed this pneumatic means and upwards and towards conveyer belt 24 guided with 25.

The pneumatic mixing arrangement 31 that is associated with the bottom of chimney 15 also forms the part of this machine; This pneumatic mixing arrangement 31 comprises conduit 32; And conduit 32 is connected in compressed air source 33 and by the opening in

wall

22 and 23 34 and with chimney 15 internal communication, to see tobacco particle stream 4 off along substantial lateral in the direction of chimney axis 15a.

This machine also comprises pneumatic accelerator 35; This pneumatic accelerator be connected in chimney with restriction 29 overlap or be right after above this restriction 29 part of (with respect to the feed direction of stream 4); And this pneumatic accelerator comprises conduit 36; This conduit 36 also is connected in compressed air source 33 and via the internal communication of a plurality of holes 37 with chimney 15, and a plurality of hole 37 has the tilt axis that passes

sidewall

22 and 23.

Therefore, the air-flow that is produced by pneumatic accelerator 35 can have the component towards absorbing

gas belt

24 and 25 orientations, to resist tobacco particle stream 4 owing to portion's section of chimney 15 is widened the deceleration that causes gradually with restriction 29 with combining.

In fact, this makes the tobacco particle stream 4 that rises through chimney 15 can keep its even matter component (just making the particle with different physical characteristics have even distribution), up to till forming two

threads

6 and 7 on absorbing

gas belt

24 and 25.

Near Reference numeral 38 representative is arranged in chimney 15 top two

sidewalls

22 and 23 and the opening that is connected with conduit 39, and folder flows 4 air with tobacco particle and finally discharges through this top.

As shown in Figure 4; The feed unit 40 that is used to present tobacco particle stream 4 is with aforementioned feed unit 2 differences: descending conduit 12 is vertical basically and transport 18 comprises with aforementioned supply unit 19 similar supply units 41 and becomes endless-belt conveyor 42; This supply unit 41 is positioned at the port of export 17 places of conduit 12, form endless-belt conveyor 42 have be suspended in two between the pulley 44 top branch 43 and supply unit 41 is connected with the entrance point 16 of up chimney 15.

Supply unit 41 comprises two spike(d) rollers of combination with one another ground operation, and tobacco is delivered to the top branch 43 of belt conveyer 42 through these two spike(d) rollers from conduit 12, and tobacco particle stream 4 is carried towards the entrance point 16 of up chimney 15 through identical conveyer by this.

At last; The feed unit 47 that is used to present tobacco particle stream 4 as shown in Figure 5 is with feed unit 2 differences shown in Figure 1: descending conduit 12 is connected in the entrance point 16 of up chimney 15 by arcwall 48, and this arcwall is with the guiding piece that acts on tobacco particle stream 4.

In this embodiment; Arcuate guide wall 48 through with pneumatic means 49 binding operations provides transport 18; And this pneumatic means 49 comprises compressed air source 50; And this compressed air source produces the air-flow of guiding towards the opening that is arranged in arcwall 48 51, and tobacco particle stream transmits along this wall through this air-flow.

Be understood that; Be not to be equipped with the double track cigarette manufacturing machine that has the single up chimney 15 of resolution element 26 on the top can be equipped with two up chimneys, these two up chimneys are parallel basically and tobacco is fed to corresponding up conveyer belt respectively.

In this situation, arcwall 48 can be divided into two branches, and each branch is fed to corresponding chimney with tobacco particle stream 4.

Claims

1. one kind is used for presenting the feed unit that tobacco particle flows at cigarette manufacturing machine; Said feed unit comprises at least: up chimney (15); Said up chimney is sealed by at least one air-breathing conveyer belt (25) in the top, and said tobacco particle stream (4) is gone up formation thread (6) at said air-breathing conveyer belt (25); Descending conduit (12), tobacco particle gathers and is transmitted along said descending conduit (12); And transport (18); Said transport (18) places between said descending conduit (12) and the said up chimney (15); Wherein said up chimney (15) is laterally delimited by two sidewalls (22,23); Said two sidewalls (22,23) produce restriction (29) in midway; And this chimney is divided into bottom (27) and top (28) by said restriction (29), and feed unit (2) comprises pneumatic mixing arrangement (31), and said pneumatic mixing arrangement is associated with the bottom (27) of said up chimney (15) and acts on the said tobacco particle stream (4).

2. feed unit as claimed in claim 1; It is characterized in that; Said feed unit comprises the pneumatic accelerator (35) that is associated with the said top (28) of said up chimney, and said pneumatic accelerator is positioned near the said restriction (29) or with said restriction (29) and overlaps and act on the said tobacco particle stream.

3. feed unit as claimed in claim 2 is characterized in that, said transport (18) comprises the supply unit (19) that is equipped with roller, and said descending conduit (12) is directly connected in said up chimney (15) through said supply unit (19).

4. feed unit as claimed in claim 3; It is characterized in that; Said conveying assembly (19) comprises transfer roller (20) and advances roller (21); From said descending conduit (12), pick up tobacco through said transfer roller (20), and said propelling roller (21) is operated with said transfer roller (20) with combining, and said tobacco particle stream (4) is knocked down along said up chimney (15) directly through said propelling roller (21).

5. feed unit as claimed in claim 2; It is characterized in that; Said transport (18) comprises endless belt conveyer (42), and said endless belt conveyer (42) places between the entrance point (16) of the port of export (17) and said up chimney (15) of said descending conduit (12).

6. feed unit as claimed in claim 5; It is characterized in that; Place the port of export (17) and the supply unit (41) between the said endless belt conveyer (42) of said descending conduit (12) to comprise transfer roller (45) and advance roller (46); From said descending conduit (12), pick up tobacco through said transfer roller (45); And said propelling roller (46) is operated with said transfer roller (45) with combining, and said tobacco particle stream (4) is thrown on the said belt conveyer (42) through said propelling roller (46).

7. feed unit as claimed in claim 2; It is characterized in that; Said transport (18) comprises arc guiding wall (48) and pneumatic means (49); Said arc guiding wall (48) places between said descending conduit (12) and the said up chimney (15), and said pneumatic means (49) produces the air-flow that passes said arcwall (48), and said tobacco particle stream (4) is guided in the said up chimney (15) through said air-flow.

8. like each described feed unit in the aforementioned claim, it is characterized in that said cigarette manufacturing machine (1) is the single track machine.

9. like each described feed unit in the aforementioned claim, it is characterized in that said cigarette manufacturing machine (1) is the double track machine.