Device and method for pressing tobacco sheets into a plurality of tobacco strips

Abstract

The present invention provides a device and method for pressing tobacco sheets into a plurality of tobacco strips, including a creasing device and a pressing device. The creasing device includes a creasing roller with a plurality of convex tooth rings on the surface, and a pressure roller with a smooth surface that cooperates with the creasing roller and has an adjustable indentation depth, which is used to press a plurality of longitudinal indentations on the tobacco sheets entering the mating surface of the two rollers; the pressing device includes rollers with a plurality of concave and convex tooth rings on the two roller surfaces, which are used to longitudinally press and separate the tobacco sheets with a plurality of longitudinal indentations into a plurality of tobacco strips with different widths, and each tobacco strip contains at least one longitudinal indentation. It has a stronger tensile strength, can shape and correct the postures of a plurality of tobacco strips, can only move longitudinally, cannot deviate laterally, and cannot break laterally, avoid tobacco sticking to the roller, is conducive to efficient transportation, and facilitates a plurality of tobacco strips with different widths to be longitudinally gathered to form tobacco shreds in the subsequent sequence, effectively controls the tobacco base rod to have consistent suction resistance and tobacco shred content, and improves the quality of the tobacco base rod.

Description

Technical Field

[0001] The invention relates to a pressing and dividing device and method, in particular to a device and method for pressing and dividing a continuous tobacco sheet into a plurality of tobacco strips, belonging to the technical field of cigarette production. Technical Background

[0002] Experimental studies have shown that when the cigarette temperature is greater than or equal to 600°C, the main harmful substance in the smoke, tar, will be released in large quantities. Based on this mechanism of tar production, various low-temperature tobacco products have been launched at home and abroad. That is, heated low-temperature cigarettes heat the smoking section below 600°C to produce only smoke but not burn it. Then, through smoke condensation and filter filtration, the tar and impurity content in the smoke is greatly reduced, and the harm of harmful substances such as tar to the human body is avoided as much as possible, the smoking quality is improved, and the needs of smokers are met. The tobacco base rod of the prior art is made of continuous tobacco sheets wound into a disc as raw material, which are transported to the cigarette forming unit, and the new and old tobacco sheets are spliced, the tobacco strips are prepared, gathered, and wrapped into rods with packaging paper during the transportation process, and finally cut into tobacco base rods of predetermined length. However, the prior art generally has problems such as insufficient filling rate of tobacco base rods, uneven distribution of tobacco shreds, low suction resistance, and unstable quality. Summary of the invention

[0003] The present invention aims to provide a device and method for pressing continuous tobacco sheets into a plurality of tobacco strips with high efficiency, filling rate reaching the standard, uniform distribution of tobacco shreds, stable and consistent draw resistance and tobacco content.

[0004] The device provided by the present invention for pressing a continuous tobacco sheet into a plurality of tobacco strips comprises:

[0005] The creasing device comprises a creasing roller with a plurality of convex tooth rings on the surface, and a pressure roller with a smooth surface cooperating with the creasing roller and having an adjustable creasing depth, and is used for pressing a plurality of longitudinal creasing marks on the tobacco sheet entering the mating surface of the two rollers;

[0006] The pressing and separating device comprises two rollers with a plurality of concave and convex tooth rings arranged on the roller surfaces, which are used for longitudinally pressing and separating tobacco sheets with a plurality of longitudinal indentations into a plurality of tobacco strips with different widths, and each tobacco strip contains at least one longitudinal indentation.

[0007] The indentation device:

[0008] The rolling head at the outer end of the creasing roller is suspended on a mounting seat, and the inner end of the creasing roller is connected to the creasing power machine;

[0009] The pressure head at the outer end of the pressure roller connected to the lifting drive mechanism is suspended on the mounting seat, and the inner end of the pressure roller is connected to the pressure power machine;

[0010] The surface of the rolling head is provided with a number of convex teeth at intervals, and the surface of the pressure head is flat;

[0011] When the creasing roller and the pressure roller are driven by their respective power machines to rotate, the rolling head and the pressure head are driven by the lifting drive mechanism to engage or separate with each other. When they are engaged with each other, an indentation can be rolled on the strip sheet, and the indentation depth is adjustable. When they are separated from each other, it is convenient to put in or take out the tobacco sheet, and it is also convenient to repair and replace the creasing roller and the pressure roller.

[0012] The rolling head of the creasing roller is suspended outwardly on the outer end of the creasing roller shaft through a seat bearing, and the inner end of the creasing roller shaft extends inward through the through hole on the mounting seat and is connected to the creasing power machine, so that the creasing roller shaft drives the rolling head to rotate under the drive of the creasing power machine.

[0013] The pressure head of the pressure roller is suspended outwardly on the outer end of the pressure roller shaft through a seat bearing, and the inner end of the pressure roller shaft extends inward through the through hole on the mounting seat and is connected to the pressure power machine, so that the pressure roller shaft drives the pressure head to rotate under the drive of the pressure power machine.

[0014] The lifting drive mechanism includes a slider fixed on the pressure roller shaft sleeve, the slider is slidably matched with the vertical slide rail fixed on the mounting seat, and a power cylinder fixed on the mounting seat, the piston rod of the power cylinder is matched with the seat bearing of the fixed pressure roller shaft and is not connected, so that under the drive of the power cylinder, the pressure roller is pushed up and down along the vertical slide rail by the piston rod, so that the pressure head and the rolling head are engaged with each other to roll an indentation on the strip-like sheet, and the engagement force between the pressure head and the rolling head can be adjusted to meet different requirements of indentation depth and shallowness, so that the pressure head and the rolling head are separated from each other to facilitate the placement or removal of the strip-like sheet, and at the same time facilitate the maintenance and replacement of the indentation roller group and the pressure roller group.

[0015] The outer end of the creasing roller shaft is connected to the rolling head through a bearing, and the inner end is connected to the main shaft of the creasing power machine through a coupling. The outer end of the creasing roller shaft is connected to the outer side and the inner side of the mounting seat through a bearing seat, and the inner end is connected to the mounting seat through a sleeve, so as to fix the creasing roller group on the mounting seat.

[0016] The outer end of the pressure roller shaft is connected to the pressure head through a bearing, and the inner end is connected to the main shaft of the pressure power machine through a coupling. The bearing seat at the outer end of the pressure roller shaft is connected to the shaft sleeve at the inner end, and is slidably connected to the vertical slide rail inside the mounting seat through a slider on the shaft sleeve, so that the pressure roller group can be slidably fixed on the mounting seat and can move up and down along the vertical slide rail.

[0017] The vertical slide rail is provided with a conventional locker so that the pressure roller set can be fixed by the locker after it moves into position along with the slide block.

[0018] The indentation power machine and the pressure power machine are respectively connected to corresponding conventional controllers so that the corresponding power machines can be controlled through the controllers.

[0019] The pressing heads at the outer ends of the two rollers of the pressing device are suspended outward on the corresponding mounting seats, and the inner ends are respectively connected to the corresponding pressing power machines. In addition to the fact that a number of concave and convex tooth rings are arranged on the surfaces of the pressing heads of the two rollers, the rest of the structure is the same as the indentation device. After the two rollers cooperate with each other, the tobacco sheets with a number of indentations entering between the two rollers are longitudinally pressed and separated into a number of tobacco strips with different widths, each of which contains at least one longitudinal indentation, and the pressing force is adjustable. After the two rollers are separated from each other, it is convenient to put in or take out the tobacco sheets, and it is also convenient to repair and replace the two rollers.

[0020] The concave gear rings or convex gear rings are respectively arranged in a plurality of circles along the roller surface, and the gear rings are in the shape of rectangle, trapezoid, triangle or wave.

[0021] The method for pressing a continuous tobacco sheet into a plurality of tobacco strips provided by the present invention is characterized by the following steps:

[0022] a creasing step, in which a plurality of longitudinal indentations are pressed on the tobacco sheet by the creasing device;

[0023] The pressing and dividing step is to longitudinally press the tobacco sheet with a plurality of longitudinal indentations into a plurality of tobacco strips of different widths by the pressing and dividing device, and each tobacco strip has at least one longitudinal indentation.

[0024] Furthermore, the depth of the longitudinal indentation is adjustable so that the indentation depth is 75-90% of the thickness of the tobacco sheet, so that the tobacco strip at the indentation position is in a semi-adherent state. The semi-adherent tobacco strip has a stronger tensile strength than the fully separated tobacco strip, is not easy to break laterally, avoids tobacco sticking to the roller, is conducive to efficient transportation, and is conducive to improving the cigarette filling rate.

[0025] Furthermore, during the pressing process, the meshing clearance between the concave and convex teeth provided on the two roller surfaces of the pressing device is greater than or equal to 1.5 times the thickness of the tobacco sheet, so that the tobacco sheet with a number of longitudinal indentations can be longitudinally pressed into a number of tobacco strips of unequal widths, and each tobacco strip contains at least one longitudinal indentation, and the several tobacco strips of unequal widths can only move longitudinally, and the postures of the several tobacco strips are shaped and corrected to prevent their lateral displacement, effectively reducing the lateral shear force of the tobacco strips, avoiding the lateral breakage of the continuous infinitely long tobacco strips, and at the same time facilitating the longitudinal gathering of the several tobacco strips of unequal widths in the subsequent gathering process to form a number of longitudinal and tiny channels between the tobacco shreds, eliminating the nesting phenomenon, and effectively controlling the infinitely long tobacco base rod to have consistent suction resistance and tobacco shred content.

[0026] Compared with the prior art, the present invention has the following advantages and effects: by adopting the above scheme, a plurality of longitudinal indentations can be conveniently pressed on the tobacco sheet first, so that the tobacco strip at the indentation position is in a semi-adherent state. Compared with the tobacco strip in a fully separated state, it has a stronger tensile strength and is not easy to break laterally. The convex teeth arranged at intervals can effectively prevent the tobacco from sticking to the roller, which is conducive to efficient transportation. Then, the tobacco sheet with a plurality of longitudinal indentations is longitudinally pressed and separated into a plurality of tobacco strips of different widths, and the postures of the plurality of tobacco strips are shaped and corrected so that they can only move longitudinally but cannot be offset laterally, effectively reducing the transverse shear force of the tobacco strip and avoiding the transverse breakage of a continuous infinitely long tobacco strip. At the same time, it is convenient for the plurality of tobacco strips of different widths to be longitudinally gathered in the subsequent gathering process to form a plurality of longitudinal and tiny channels between the tobacco shreds, eliminating the nesting phenomenon, effectively controlling the infinitely long tobacco base rod to have consistent suction resistance and tobacco shred content, and greatly improving the quality of the tobacco base rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of the indentation device in;

[0029] Figure 3 for Figure 1 Schematic diagram of the pressure dividing device in;

[0030] Figure 4 for Figure 1 The cross-sectional structure diagram of the indentation device in FIG.

[0031] Figure 5 for Figure 2 Schematic diagram of the local structure;

[0032] Figure 6 for Figure 3 Schematic diagram of the local structure;

[0033] Figure 7 , Figure 8 It is a schematic diagram of the concave and convex tooth shapes of the pressure-dividing device;

[0034] Fig. 9 For inventions, use schematic diagrams. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] The device provided by the present invention for pressing a continuous tobacco sheet into a plurality of tobacco strips is composed of the following:

[0037] The creasing device 4 comprises a creasing roller 41 with a plurality of convex tooth rings 411 on the surface, and a pressure roller 42 with a smooth surface cooperating with the creasing roller 41 and having an adjustable creasing depth, and is used to extrude a plurality of longitudinal creasing marks b on the tobacco sheet a entering the mating surface of the two rollers;

[0038] The pressing and separating device 5 comprises rollers 51 and 52, both surfaces of which are provided with a plurality of concave and convex tooth rings, and is used for longitudinally pressing and separating the tobacco sheet a with a plurality of longitudinal indentations b into a plurality of tobacco strips of different widths, and each tobacco strip has at least one longitudinal indentation b;

[0039] Among them: the rolling head 412 at the outer end of the creasing roller 41 is suspended on the mounting seat 43, and the inner end of the creasing roller 41 is connected to the first power machine 44; the pressure head 421 at the outer end of the pressure roller 42 connected to the lifting drive mechanism 46 is suspended outward on the mounting seat 43, and the inner end of the pressure roller 42 is connected to the second power machine 45; while the creasing roller 41 and the pressure roller 42 are driven by their respective power machines to rotate, the rolling head 412 and the pressure head 421 are driven by the lifting drive mechanism 46 to be connected or separated from each other. When connected to each other, an indentation b can be rolled on the tobacco sheet a, and the depth of the indentation b is adjustable. When separated from each other, it is convenient to put in or take out the tobacco sheet a, and it is also convenient to repair and replace the creasing roller 41 and the pressure roller 42; the creasing roller 41 The rolling head 412 is suspended on the outer end of the indentation roller shaft 414 through a seat bearing 413, and the inner end of the indentation roller shaft 414 extends inward through the through hole on the mounting seat 43 and is connected to the indentation power machine 44, so that the indentation roller shaft 414 drives the rolling head 412 to rotate under the drive of the indentation power machine 44; the outer end of the indentation roller shaft 414 is connected to the outer side and the inner side of the mounting seat 43 through the seat bearing 413, and the inner end is connected to the sleeve 415 respectively, so as to fix the indentation roller 41 on the mounting seat 43; the pressure head 421 of the pressure roller 42 is suspended on the outer end of the pressure roller shaft 423 through a seat bearing 422, and the inner end of the pressure roller shaft 423 extends inward through the through hole on the mounting seat 43 and is connected to the pressure power machine 45, so that the indentation roller 414 can rotate. The pressure roller shaft 423 drives the pressure head 421 to rotate; the seat bearing 422 at the outer end of the pressure roller shaft 423 is connected to the shaft sleeve 424 at the inner end, and is slidably connected to the vertical slide rail 462 on the inner side of the mounting seat 43 through the slider 461 on the shaft sleeve 424, so that the pressure roller 42 can be slidably fixed on the mounting seat 43 and can move up and down along the vertical slide rail 462; the lifting drive mechanism 46 includes a slider 461 fixed on the shaft sleeve 424 of the pressure roller shaft 423, the slider 462 is slidably matched with the vertical slide rail 462 fixed on the mounting seat 43, and a power cylinder 463 fixed on the mounting seat 43, the piston rod 464 of the power cylinder is matched with the seat bearing 422 that fixes the pressure roller shaft 423 and is not connected , so that under the drive of the power cylinder 463, the pressure roller 42 is pushed by the piston rod 464 to move up and down along the vertical slide rail 462, so that the pressure head 421 and the rolling head 412 are meshed with each other to roll out an indentation b on the tobacco sheet a, and the meshing force of the pressure head 421 and the rolling head 412 can be adjusted to process an indentation of a desired depth, so that the pressure head 421 and the rolling head 412 are separated from each other to facilitate the placement or removal of the tobacco sheet a, and at the same time, it is convenient to repair and replace the indentation roller 41 and the pressure roller 42. A plurality of circles of convex teeth 411 are arranged on the rolling head 41 at intervals, and the convex teeth 411 are set as sheet teeth, or oblique teeth with thick tooth heels and thin tooth tips, so that a plurality of indentations are rolled out on the tobacco sheet at intervals to improve the cigarette filling rate, such as Figure 2 , Figure 4;

[0040] The pressing device 5 comprises: two rollers 51 and 52 with a plurality of concave and convex tooth rings on the surfaces of the two rollers 51 and 52, specifically: the pressing heads at the outer ends of the two rollers 51 and 52 are suspended outward on the corresponding mounting seats, and the inner ends are respectively connected to the corresponding pressing power machines, and except that the pressing heads of the two rollers 51 and 52 are provided with a plurality of concave and convex tooth rings on the surfaces of the two rollers 51 and 52, the rest of the structure is the same as the creasing device 4. Through the mutual cooperation of the two rollers 51 and 52, the tobacco sheet a with a plurality of indentations b thereon entering between the two rollers 51 and 52 is longitudinally pressed and separated into a plurality of tobacco strips of different widths, and each tobacco strip contains at least one longitudinal indentation b, such as Figure 3 , and the pressing force is adjustable, which facilitates the insertion or removal of tobacco sheets a when separated from each other, and also facilitates the maintenance and replacement of the two rollers 51 and 52; the concave gear ring or the convex gear ring is respectively provided with a plurality of rings along the roller surface, and the gear ring shape is a trapezoidal 53 or a wavy 54, such as Figure 7 , Figure 8 Obviously, it can also be other shapes that can be pressed into a number of smoke strips of different widths;

[0041] The indentation power machine and the pressure power machine are respectively connected to corresponding conventional controllers so that the corresponding power machines can be controlled through the controllers.

[0042] The method for pressing a continuous tobacco sheet into a plurality of tobacco strips provided by the present invention is characterized by the following steps:

[0043] A creasing step, pressing a plurality of longitudinal indentations b on the tobacco sheet a after splicing;

[0044] a pressing and dividing step, longitudinally pressing the tobacco sheet a with the plurality of longitudinal indentations b into a plurality of tobacco strips of different widths, wherein each tobacco strip includes at least one longitudinal indentation b;

[0045] Furthermore, the depth of the longitudinal indentation b is adjustable, so that the depth of the indentation b is 75-90% of the thickness of the tobacco sheet a, so that the tobacco strip at the position of the indentation b is in a semi-adherent state. The semi-adherent tobacco strip has a stronger tensile strength than the fully separated tobacco strip, is not easy to break horizontally, avoids tobacco sticking to the roller, is conducive to efficient transportation, and is conducive to improving the cigarette filling rate;

[0046] During the pressing process, the meshing gap between the concave and convex teeth of the two rollers is greater than or equal to 1.5 times the thickness of the tobacco sheet a, so that the tobacco sheet a with a number of longitudinal indentations b can be longitudinally pressed into a number of tobacco strips of different widths, and each tobacco strip contains at least one longitudinal indentation b, and the several tobacco strips of different widths can only move longitudinally, and the postures of the several tobacco strips are shaped and corrected to prevent them from lateral displacement, effectively reducing the lateral shear force of the tobacco strips, avoiding the lateral breakage of the continuous infinitely long tobacco strips, and at the same time facilitating the longitudinal gathering of the several tobacco strips of different widths in the subsequent gathering process to form a number of longitudinal and tiny channels between the tobacco shreds, eliminating the nesting phenomenon, and effectively controlling the infinitely long tobacco base rod to have consistent suction resistance and tobacco shred content.

[0047] The device of the present invention can cooperate with the upstream conventional splicing device 2, guiding device 3, feeding device 1, and the downstream additive application device 6 and gathering device 7 to form a tobacco base rod processing production line. The feeding device 1 includes a turntable 11, and multiple reels 12 fixed on the turntable 11. Tobacco sheet rolls are installed on the reels 12, and automatic rolling is completed by a mechanism hand 9. The splicing device 2, guiding device 3, feeding device 1, indentation device 4, pressure dividing device 5, and additive application device 6 are all arranged in an isolation chamber 8 to avoid external interference.

Claims

1. A device for pressing tobacco sheets into a plurality of tobacco strips, characterized in that include: The creasing device comprises a creasing roller with a plurality of convex tooth rings on the surface, and a pressure roller with a smooth surface cooperating with the creasing roller and having an adjustable creasing depth, and is used for pressing a plurality of longitudinal creasing marks on the tobacco sheet entering the mating surface of the two rollers; The pressing and separating device comprises two rollers each having a plurality of concave and convex tooth rings arranged on the roller surface, and is used for longitudinally pressing and separating the tobacco sheet with a plurality of longitudinal indentations into a plurality of tobacco strips of different widths, and each tobacco strip has at least one longitudinal indentation; The outer end of the indentation roller shaft is connected to the rolling head through a bearing, and the inner end is connected to the main shaft of the indentation power machine through a coupling, and the outer end of the indentation roller shaft is connected to the outer side and the inner side of the mounting seat through a bearing seat, and the inner end is connected to the outer side and the inner side of the mounting seat through a shaft sleeve respectively; The outer end of the pressure roller shaft is connected to the pressure head through a bearing, and the inner end is connected to the main shaft of the pressure power machine through a coupling. The bearing seat at the outer end of the pressure roller shaft is connected to the shaft sleeve at the inner end, and is slidably connected to the vertical slide rail inside the mounting seat through the slider on the shaft sleeve. The pressure dividing device: The pressing heads at the outer ends of the two rollers are suspended outward on the corresponding mounting seats, and the inner ends are connected to the corresponding pressing power machines. In addition to the fact that a number of concave and convex gear rings are arranged on the surfaces of the pressing heads of the two rollers, the rest of the structure is the same as the indentation device.

2. The device for pressing tobacco sheets into a plurality of tobacco strips according to claim 1, characterized in that The indentation device: The rolling head at the outer end of the creasing roller is suspended on a mounting seat, and the inner end of the creasing roller is connected to the creasing power machine; The pressure head at the outer end of the pressure roller connected to the lifting drive mechanism is suspended on the mounting seat, and the inner end of the pressure roller is connected to the pressure power machine; A number of convex teeth are arranged at intervals on the surface of the rolling head, and the surface of the pressure head is flat.

3. The device for pressing tobacco sheets into a plurality of tobacco strips according to claim 2, characterized in that: The rolling head of the creasing roller is suspended outwardly on the outer end of the creasing roller shaft through a seat bearing, and the inner end of the creasing roller shaft extends inward through a through hole on the mounting seat and is connected to the creasing power machine; The pressure head of the pressure roller is suspended outwardly on the outer end of the pressure roller shaft through a seat bearing, and the inner end of the pressure roller shaft extends inward through a through hole on the mounting seat and is connected to the pressure power machine.

4. The device for pressing tobacco sheets into a plurality of tobacco strips according to claim 2, characterized in that The lifting drive mechanism includes a slider fixed on the pressure roller shaft sleeve, the slider is slidably matched with the vertical slide rail fixed on the mounting seat, and a power cylinder fixed on the mounting seat, the piston rod of the power cylinder is matched with the seat bearing fixed to the pressure roller shaft and is not connected.

5. The device for pressing tobacco sheets into a plurality of tobacco strips according to claim 1, characterized in that The concave gear rings or convex gear rings are respectively arranged in a plurality of circles along the roller surface, and the gear rings are in the shape of rectangle, trapezoid, triangle or wave.

6. A method for pressing a tobacco sheet into a plurality of tobacco strips using the device of claim 1, characterized in that Go through the following steps: a creasing step, in which a plurality of longitudinal indentations are pressed on the tobacco sheet by a creasing device; The pressing and dividing step is to press the tobacco sheet with a plurality of longitudinal indentations into a plurality of tobacco strips with different widths longitudinally by a pressing and dividing device, and each tobacco strip has at least one longitudinal indentation.

7. The method for pressing tobacco sheets into a plurality of tobacco strips according to claim 6, characterized in that The depth of the longitudinal indentation is adjustable so that the indentation depth is 75-90% of the thickness of the tobacco sheet, so that the tobacco strip at the indentation position is in a semi-adherent state. The semi-adherent tobacco strip has a stronger tensile strength than the fully separated tobacco strip, is not easy to break laterally, avoids tobacco sticking to the roller, is conducive to efficient transportation, and is conducive to improving the cigarette filling rate.

8. The method for pressing tobacco sheets into a plurality of tobacco strips according to claim 6, characterized in that During the pressing process, the meshing gap between the concave and convex teeth arranged on the two roller surfaces of the pressing device is greater than or equal to 1.5 times the thickness of the tobacco sheet, so that the tobacco sheet with a number of longitudinal indentations can be longitudinally pressed into a number of tobacco strips of different widths, and each tobacco strip contains at least one longitudinal indentation, and the several tobacco strips of different widths can only move longitudinally, and the postures of the several tobacco strips are shaped and corrected to prevent them from lateral displacement, effectively reducing the lateral shear force of the tobacco strips, avoiding the lateral breakage of the continuous infinitely long tobacco strips, and at the same time facilitating the longitudinal gathering of the several tobacco strips of different widths in the subsequent gathering process to form a number of longitudinal and tiny channels between the tobacco shreds.

Images