JP2005536991A - Production method of cigarette with filter - Google Patents

Abstract

A regular series of first tobacco products (4), each formed by a double cigarette portion, is moved along the filter assembly machine (5) at a first pitch (P1) in the first portion of the path (B) ( S1) delivered; as they move along the first part, the first product (4) is cut into a pair of parts (13, 14) respectively, and each pair of parts is axially spaced And then fed along the second part (S2) of the path (B); as they move along the second part, each pair of parts (13, 14) To constitute a series of second products (29) each formed by a corresponding pair of parts (13, 14) and a corresponding double filter (21) disposed between each, Separated by intervening The Each piece of paper (33) is rotated to join a pair of parts (13, 14) and a double filter (21) and to form a third product (40) formed by a double cigarette. Is pasted to each second product (29); and the first product (4) is more than the first pitch (P1) along the first portion (S1) of the path It is allowed to accept a pitch reduction to take a second pitch (P2) that is short and approximately equal to the length of the corresponding piece of paper (33) but not shorter.

Description

  The present invention relates to a method for producing a cigarette with a filter.

  For example, as described in GB-2, 241, 866, in a filter assembly machine in which a filter cigarette forms a path therein, an elongated tobacco product is fed along the path in a direction crossing its respective axis. It is known that The known filter assembly machine accepts at its entrance a series of first tobacco products—hereinafter referred to as “double parts” —each of which doubles 2 across the cutting station along the path. Cut into one coaxial single part. The single parts of each double part are then axially spaced apart and separated by a double filter in between, and the double filter is sent to the double part supply line by a separate supply line to the corresponding pair. Together with a single part of a second tobacco product, hereinafter referred to as a “group”.

  The components of each group are connected together at the rolling station together with adhesive strips to form a third tobacco product—hereinafter referred to as “double cigarette” —in the center of the strip. The part wraps the double filter and the end of the piece of paper wraps the facing ends of the two single parts.

  As will be appreciated by those skilled in the art, the process of wrapping a group to form the corresponding double cigarette is directly related to the production rate of the filter assembly machine to prevent tobacco leaves from falling from the open end of the single part. This is a very important step because the rolling function, which is a typical function, must be maintained within a certain maximum value.

  It is also known that when the filter assembly machine is at a certain production rate, the rolling speed is directly dependent on the pitch at which successive groups are sent to the rolling station.

  With respect to the above, the standard pitch at which the group is sent to the rolling station is relatively long (about 37.7 mm), and for reasons that mainly depend on the structure of the device that sends the double part to the filter assembly machine, It should be pointed out that it simplifies the various processing operations upstream of the station but is directly and largely related to the group rolling speed.

  In order to reduce the rolling speed or increase the operating speed of the filter assembling machine without increasing the rolling speed, US Pat. No. 5,474,091 has a pitch shorter than the standard pitch, i.e. the length of the piece of paper used. Well, practically the same length between about 32 mm and 20 mm, and with a pitch that is not shorter than that, supply the double part to the filter assembly machine, or short the group pitch just before rolling Propose to reduce to the pitch of the direction.

  However, experience has shown that on the one hand, in order to send the double part to the filter assembly machine at a reduced pitch, a pitch reduction device outside the filter assembly machine, which is difficult to assemble and use, is required, and on the other hand, just before rolling It is clear that increasing the operating speed of the filter assembly machine by reducing the pitch affects the reliability of the double filter supply line which is not affected at all by the decrease in pitch.

  It is an object of the present invention to provide a method for producing a filtered cigarette designed to eliminate the above disadvantages.

  More specifically, it is an object of the present invention to provide a method that can maximize the production rate of a filter assembly machine not only for a given rolling speed but also for a given double filter feed rate. .

  According to the invention, there is provided a method for producing a filtered cigarette as described in claim 1 and, preferably, as described in any one of the following claims, directly or indirectly dependent on claim 1. Provided.

  According to the present invention there is also provided a method for producing a cigarette with a filter according to claim 10.

Non-limiting embodiments of the present invention are described by way of example with reference to the accompanying drawings.
Reference numeral 1 in FIG. 1 shows an entire system for producing a cigarette with a filter, and includes a known cigarette manufacturing machine 2. The machine 2 includes an output plate 3 along which a continuous cigarette rod (not shown in the figure) is fed at a substantially constant axial speed, and a known cutting head Divided into a series of double parts 4 (not shown in the figure).

  The cutting head (not shown in the figure) rotates in a known manner at a speed that produces a double part 4 with a length equal to the sum of the lengths of the two cigarette leafs produced. To do.

  Reference numeral 5 in FIG. 1 shows the filter assembly machine as a whole, and its known input unit 6 forms the input roller of the filter assembly machine 5 from the output plate 3 of the production machine 2 and is constant. The double portions 4 are continuously known on the respective sheets 7 arranged at regular intervals of a pitch P1 of usually 37.7 mm along the circumference of the roller 8 rotating counterclockwise in FIG. Change the way.

  In a variant not shown in the figure, the production machine 2 is a double rod machine, in which case the double part 4 is taken up from the plate 3, one for each rod, preferably in pairs. It is transferred to roller 8 by a known input unit of the type described in US Pat. No. 4,645,063.

  The input roller 8 supplies the double part 4 so as to cross the respective longitudinal axis along the input part of the first part S1 of the path B extending along the entire filter assembling machine 5. Are sequentially transferred along the circumference of the roller 10 to the respective sheets 9 arranged at equal intervals at the pitch P1, and the roller 10 is powered so as to rotate clockwise in FIG. -It is arranged so as to be in contact with the roller 8 at one point, and the double part 4 is conveyed so that the end of the double part 4 is in contact with the alignment plate (aligning plate) 11, and the alignment plate travels through the double part 4 Fully aligned with each other transverse to the direction.

  Once aligned, the double part 4 is further fed by the roller 10 along the part S1 of the path B to a known cutting station 12, where each double part 4 is divided into two parts 13 and 14, and the two parts Are still aligned within the sheet 9 and their ends are still in contact.

  At the transfer station 15, the roller 10 contacts the parallel rollers 16 and 17 of a separation assembly or axial spacing assembly, indicated generally at 18, at one point.

  Obviously, other types of separation devices such as those described in US Pat. No. 4,200,179 can be used in place of the separation assembly 18 shown in the figure, but the example shown in the figure. In this regard, the separation assembly 18 is of the type described in US Pat. No. 4,531,629, which is hereby fully incorporated for the purpose of full disclosure.

  In the transfer station 15, the parts 13 and 14 occupying each sheet 9 are arranged in a known manner wider than the sheet 9 and at a pitch P1 along the circumference of the respective rollers 16 and 17. Each sheet 19 and 20 is transferred.

  Due to the separating assembly 18 with the offset of the rollers 16 and 17, the previously aligned portions 13 and 14 in each sheet 9 are axially spaced by a distance substantially equal to the length of the double filter 21. To the sheet 23 at the transfer station 22 forming the output end of the first part S1, which is wider than the sheet 9 in a known manner and like the sheets 19 and 20, and The rollers 16 and 17 are arranged at intervals of a pitch P2 shorter than P1 along the circumference of the roller 24 which is in contact with the rollers 16 and 17 at one point and forms the input roller of the first intermediate portion S2 of the path B.

  More specifically, the pitch P2 ranges from 30 mm to 32 mm and is usually 31 mm.

  The pitch reduction from P1 to P2 is a backward rotation in a known manner along the relatively wide sheets 19 and 20 before being inserted into the sheet 23 when the sections 13 and 14 are transferred from the rollers 16 and 17 to the roller 24. It becomes possible by doing.

  The roller 24 is parallel to the roller 10 and includes an output roller 26 having a portion S1 of the path B and sheets 27 arranged at short pitch P2 intervals along the circumference of the roller 26. Both output portions of line 25 supplying double filter 21 are formed.

  Rollers 26 supply each double filter 21 to the corresponding sheet 23 at a loading station 28 located upstream of the transfer station 22. More specifically, when fed to each sheet 23, the rollers 26 of the corresponding pair of portions 13 and 14 so that each double filter 21 forms two empty ends within the sheet 23. Each double filter 21 is fed into the substantial center of each sheet 23 corresponding to the gap between the facing ends. This empty end is finally formed on the roller 24 by coaxial parts 13 and 14, respectively, to form a group 29 formed by two parts 13 and 14 separated by a double filter 21. Occupied.

  The roller 24 sequentially supplies the groups 29 to the sheet 30 of the roller 31 with the shorter pitch P2. The roller 31 is arranged along the part S2 and sequentially feeds the group 29 to a loading station 32 for loading a series of paper strips 33 fed to the roller 31 at a shorter pitch P2 by a supply line 34.

  Each piece of paper 33 connects the portions 13 and 14 of the respective group 29 and the double filter 21 together, and its length is approximately equal to, but not less than, the outer circumference of the portions 13 and 14. And each piece of paper 33 is sufficient to contact the corresponding group 29 along the outer generatrix of the group 29 and protrude from the corresponding group 29 toward the adjacent upstream group 29 without contact. The length is substantially equal to the pitch P2 but not larger than that.

  A pitch P2 of 31 mm has resulted in producing cigarettes of the size currently used (maximum diameter approximately 8.6 mm), but a shorter pitch P2 can be used for machines that produce a given size. it is obvious.

  The known rolling units 35 are arranged immediately downstream of the roller 31 and are arranged at a shorter pitch P2 along the circumference of the roller 36 and each corresponding group 29 and corresponding from the roller 31 in a known manner. It includes a roller 36 having a sheet 37 that receives a piece of paper 33 to be printed. The roller 36 feeds the group 29 and the corresponding paper strip 33 to the rolling station 38, which faces the outer periphery of the roller 36 and is coaxial with the roller 36 and knurled in a known manner. Formed on its side facing the roller 36 by the cylindrical surface portion being spaced apart and separated from the cylindrical outer surface of the roller 36 by a distance approximately equal to but not greater than the diameter of the portions 13 and 14; It is formed by a fixed plate 39.

  When entering the passage between the plate 39 and the outer periphery of the roller 36, each group rotates backward about its axis and comes off the corresponding sheet 37, so that the corresponding piece of paper 33 constitutes the double cigarette 40. To do so, wrap around the end of the corresponding double filter 21 and the corresponding portion 13 and 14 facing the double filter 21.

  By the end of the plate 39, approximately equal to half of the pitch P2 and usually 16 as described in US Pat. No. 5,349,968, which is herewith sufficient reference for full disclosure. In order to reduce their pitch to a pitch P3 which is −17 mm, the double cigarettes 40 rotate backwards along the circumference of the roller 36 during rolling. At the end of the plate 39, the double cigarette 40 is transferred at the pitch P3 to the respective sheets 42 arranged at intervals of the pitch P3 along the circumference of the roller 43 at the transfer station 41. The roller 43 forms an input roller for the second intermediate part S3 of the path B and transfers the double cigarette 40 to a further roller 44 for feeding the double cigarette 40 to the cutting assembly 45. 45 cuts the double cigarette 40 in half to produce two coaxial single cigarettes 46 from each double cigarette 40 with the filters facing each other at the ends.

  In the transfer station 47 forming the output end of the part S3, each pair of single cigarettes 46 is arranged in a row of rollers 49 of the reversing unit 50 forming the input part of the output part S4 of the path B. Sheet 48a and 48b. As described in U.S. Pat. No. 4,090,602, where sufficient reference is made here for the purpose of full disclosure, sheet 48a is secured to roller 49 while each sheet is 48b is movable with respect to roller 49 and tilts 180 degrees relative to roller 49 to each position between two adjacent sheets 48a to form a series of single cigarettes 46 oriented in the same direction. The series of single cigarettes 46 are spaced so as to be substantially flush with each other at a pitch P4 equal to half of the pitch P3, and at the pitch P4, the two rollers 51 and 52 Through a known series of workstations (not shown in the figure) placed between To be transferred to a output conveyor 54 to terminate further portion S4 and path B.

  As is apparent from the above description, by reducing the pitch from P1 to P2 upstream from the station 28 loading the double filter 21, both the double filter 21 and the paper piece 33 are at a shorter pitch P2. And can therefore be supplied at a slower rate.

  With regard to the above, the pitch reduction from P1 to P2 takes place at the end of part S1 in the example shown in the figure, and in particular when parts 13 and 14 are transferred from part S1 to part S2. However, it should be emphasized that the same benefits can be obtained by reducing the pitch in the same way at any point along the portion S1.

1 is a schematic side view of a first part of a system for carrying out the method constituting the object of the present invention. 2 is a schematic side view of a second part of a system for carrying out the method constituting the object of the present invention.

Claims (10)

A method of producing a cigarette with a filter, the method comprising:
A path (B) extending along a filter assembly machine (5) through a regular series of first tobacco products (4) arranged at intervals of the first pitch (P1) and each formed by a double cigarette portion Supplying to the first part (S1) of
To the first cutting station (12) to cut the first product (4) laterally along the first part (S1) into a pair of parts (13, 14), respectively; Then supplying said first product (4) to spacing means (18) for axially spacing each said pair of portions (13, 14);
Supplying a pair of spaced apart portions (13, 14) along a second portion (S2) of the path (B);
As they move along the second part (S2), a series formed respectively by the corresponding pair of parts (13, 14) and the corresponding double filter (21) disposed between them. Disposing a double filter (21) between each of the pair of parts (13, 14) to constitute a second product (29) of:
A third product formed by a double cigarette by joining the corresponding pair of portions (13, 14) and the corresponding double filter (21) along the second portion (S2). 40) and pasting each piece of paper (33) by wrapping it around each second product (29),
In order to obtain from each said third product (40) two fourth products (46) directed in opposite directions and each formed by a filtered cigarette, a third part of said path (B) ( Supplying said third product (40) along S3) and to a second cutting station (45);
The fourth product (46) along the fourth part (S4) of the path (B) and into the reversing unit (50) to obtain the fourth product (46) oriented in a series of equal directions. 46) providing,
And when the first product (4) moves along the first part (S1), the length of the corresponding piece of paper (33) which is shorter than the first pitch (P1) and corresponding. A method of producing a filtered cigarette comprising the further step of subjecting to a pitch reduction to take a second pitch (P2) of length approximately equal to but not less than.   The method of claim 1, wherein the first pitch is about 37.7 mm and the second pitch (P2) ranges from 30 mm to 32 mm.   The method of claim 2, wherein the second pitch (P2) is about 31 mm long.   4. The method according to claim 1, wherein the pitch reduction is performed at the end of the first part (S1).   5. Method according to claim 4, characterized in that the pitch reduction is performed when the first product (4) is transferred from the first part (S1) to the second part (S2). .   Further to the third product (40) to take a third pitch (P3) shorter than the second pitch (P2) when they move along the second part (S2) 6. The method according to claim 1, further comprising the further step of subjecting to a pitch reduction.   7. The further pitch reduction is performed when the third product (40) is transferred from the second part (S2) to the third part (S3). The method described.   Further to the fourth product (46) to take a fourth pitch (P4) shorter than the third pitch (P3) when they move along the fourth part (S4) 8. The method according to claim 1, further comprising the further step of receiving a pitch reduction thereon.   9. The method according to claim 8, wherein said further pitch reduction is performed when said fourth product (46) moves through said reversing unit (50). A method of producing a cigarette with a filter, the method comprising:
A path (B) extending along a filter assembly machine (5) through a regular series of first tobacco products (4) arranged at intervals of the first pitch (P1) and each formed by a double cigarette portion Supplying to the first part (S1) of
To the first cutting station (12) to cut the first product (4) laterally along the first part (S1) into a pair of parts (13, 14), respectively; Then supplying said first product (4) to spacing means (18) for axially spacing each said pair of portions (13, 14);
Supplying a pair of spaced apart portions (13, 14) along a second portion (S2) of the path (B);
As they move along the second part (S2), a series formed respectively by the corresponding pair of parts (13, 14) and the corresponding double filter (21) disposed between them. Disposing a double filter (21) between each of the pair of parts (13, 14) to constitute a second product (29) of:
A third product formed by a double cigarette by joining the corresponding pair of portions (13, 14) and the corresponding double filter (21) along the second portion (S2). 40) and pasting each piece of paper (33) by wrapping it around each second product (29),
In order to obtain from each said third product (40) two fourth products (46) directed in opposite directions and each formed by a filtered cigarette, a third part of said path (B) ( Supplying said third product (40) along S3) and to a second cutting station (45);
The fourth product (46) along the fourth part (S4) of the path (B) and into the reversing unit (50) to obtain the fourth product (46) oriented in a series of equal directions. 46) providing,
And when the first product (4) moves along the first part (S1), the length of the corresponding piece of paper (33) which is shorter than the first pitch (P1) and corresponding. A further step of subjecting the pitch reduction to take a second pitch (P2) of length approximately equal to but not less than
The second product (40) for taking a third pitch (P3) shorter than the second pitch (P2) when they move along the second part (S2). Further steps to reduce the pitch,
The fourth product (46) has a third for taking a fourth pitch (P4) shorter than the third pitch (P3) when they move along the fourth part (S4). And a further step of subjecting to a pitch reduction.

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