Tobacco sheet fixed length cutting device

Abstract

The present invention discloses a device for cutting tobacco sheets to fixed lengths. In the device, a slicing roller is configured to attract tobacco sheets to the outer wall of the slicing roller and drive the tobacco sheets from an initial position to a first position. A slicing knife roller is configured to cooperate with the slicing roller to cut the tobacco sheets at the first position into a plurality of fixed-length slices of a set length. The slicing roller drives the fixed-length slices from the first position to a second position. A shredder roller is configured to attract the fixed-length slices to the outer wall of the shredder roller and drive the fixed-length slices from the second position to a third position. The shredder roller is configured to cooperate with the shredder roller to cut the fixed-length slices at the third position into a plurality of thin slices of a set width and a set length. A hopper is configured so that the plurality of thin slices of the set width and length can sequentially pass through a discharge port of the hopper. This device can improve the length stability and orderly arrangement rate of the thin slices.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco processing machinery, and in particular to a tobacco sheet fixed-length cutting device. Background Art

[0002] Mainstream electrically heated cigarettes consist of a filter section, a cooling section, and a tobacco material section, with the tobacco material primarily consisting of tobacco flakes. The main methods for filling the tobacco flakes into the tobacco material section include crumpled flakes, ordered filling of shredded tobacco flakes, and relatively ordered filling of shredded tobacco flakes. Given the high selectivity and utilization of tobacco flakes achieved with the relatively ordered filling method, relatively ordered cigarettes have become a research hotspot in the industry. In existing technology, the preparation of the tobacco material section for relatively ordered cigarettes involves first continuously cutting rolled tobacco flakes into shredded tobacco flakes of the desired width, then cutting the shredded tobacco flakes of the desired width into shredded tobacco flakes of the desired length, and then arranging the randomly stacked shredded tobacco flakes in an orderly manner, which is then rolled and cut into tobacco rods of the desired length. The length stability and ordered arrangement rate of the shredded tobacco flakes in the tobacco rods significantly impact the consistency of the cigarette's physical indicators and smoking quality. However, the shredded tobacco flakes cut using these methods suffer from poor length stability and a low ordered arrangement rate within the tobacco rods, significantly impacting the quality of heated cigarettes. Summary of the Invention

[0003] The object of the present invention is to provide a device for cutting tobacco slices into fixed lengths, so as to solve the problem in the prior art that the slices are first continuously cut into slices of a desired fixed width, and then the slices of the desired fixed width are cut into slices of a desired length. The length stability of the slices cut in this way is poor, and the orderly arrangement rate of the slices in the tobacco rod is low, which greatly affects the quality of heated cigarettes.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A tobacco sheet fixed-length shredding device is used to cut tobacco sheets into thin sheets with a set width and a set length, comprising:

[0006] a slicing roller, wherein the slicing roller is configured to adsorb the tobacco sheet to an outer wall of the slicing roller and drive the tobacco sheet to move from an initial position to a first position;

[0007] a slicing knife roller, the slicing knife roller being configured to cooperate with the slicing roller to cut the tobacco sheet at the first position so as to divide the tobacco sheet into a plurality of fixed-length slices of a set length;

[0008] The slicing roller can drive the fixed-length sheet to move from the first position to the second position;

[0009] a cutting roller, wherein the cutting roller is configured to adsorb the fixed-length sheet to the outer wall of the cutting roller and drive the fixed-length sheet to move from the second position to the third position;

[0010] a slitting knife roller, the slitting knife roller being configured to cooperate with the slitting roller to cut the fixed-length sheet at the third position into a plurality of sheet strands having a set width and a set length;

[0011] The cutting roller can drive the thin wire to move from the third position to the fourth position;

[0012] A hopper, wherein the feed port of the hopper is located at the fourth position, and the hopper is configured so that a plurality of thin sheet wires with set widths and set lengths can pass through the discharge port of the hopper in sequence.

[0013] As a preferred solution of the above-mentioned tobacco sheet fixed-length shredding device, the slicing roller is rotatably arranged along its own central axis, and the slicing roller is provided with a plurality of first grooves arranged at intervals along the circumference of the slicing roller, and the first grooves extend axially along the slicing roller; the slicing knife roller includes a knife roller rotatably arranged along its own central axis and a plurality of first blades that are all fixedly arranged on the knife roller, and the plurality of first blades are arranged at intervals along the circumference of the knife roller, and the first blades are configured so that the first blade located at the first position can penetrate the first groove located at the first position to cut the tobacco sheet located at the first position.

[0014] As a preferred embodiment of the above-mentioned tobacco sheet fixed-length shredding device, the slicing roller includes a mounting roller rotatably arranged along its own central axis and a plurality of slicing block knives fixedly arranged on the mounting roller. The plurality of slicing block knives are arranged at intervals along the circumference of the mounting roller, and the first groove is formed between two adjacent slicing block knives and the mounting roller.

[0015] As a preferred embodiment of the above-mentioned tobacco sheet fixed-length shredding device, the slicing roller also includes a fixedly arranged first air sleeve and a first suction component, the first air sleeve is located in the mounting roller, the mounting roller rotates relative to the first air sleeve, the first air sleeve is provided with a first negative pressure chamber, the first negative pressure chamber is connected to the first suction component, and the first suction component can absorb the gas in the first negative pressure chamber; the mounting roller is provided with a first air hole, the slicing knife is provided with a second air hole connected to the first air hole, and the first air hole located at the initial position and between the initial position and the second position is connected to the first negative pressure chamber.

[0016] As a preferred solution of the above-mentioned tobacco sheet fixed-length shredding device, the slicing roller also includes a first blowing assembly; the first air sleeve is provided with a first positive pressure chamber that is not connected to the first negative pressure chamber, the first blowing assembly is connected to the first positive pressure chamber, the first blowing assembly can blow air into the first positive pressure chamber, and the first air vent located at the second position is connected to the first positive pressure chamber.

[0017] As a preferred solution of the above-mentioned tobacco sheet fixed-length shredding device, the shredding roller is rotatably arranged along its own central axis, and the shredding roller is provided with a plurality of second grooves arranged at intervals along the axial direction of the shredding roller, and the second grooves extend along the circumference of the shredding roller; the shredding knife roller includes a knife shaft and a plurality of second blades that are all fixedly arranged on the knife shaft, and the plurality of second blades are arranged at intervals along the axial direction of the knife shaft, and the plurality of second blades are arranged in a one-to-one correspondence in the plurality of second grooves at the third position to cut the fixed-length sheet located at the third position into a plurality of sheet shreds.

[0018] As a preferred embodiment of the above-mentioned tobacco sheet fixed-length shredding device, the shredding roller includes a mounting part rotatably arranged along its own central axis and a shredding piece fixedly arranged on the mounting part, and the shredding piece is provided with a plurality of second grooves arranged at intervals along the axial direction of the shredding piece, and the second grooves extend along the circumference of the shredding piece.

[0019] As a preferred embodiment of the above-mentioned tobacco sheet fixed-length shredding device, the hopper is provided with a plurality of first silk suction holes, two second silk suction holes and a third silk suction hole, the inlets of the plurality of first silk suction holes are all connected to the feed port, the inlet of one of the second silk suction holes is connected to the outlet of a part of the first silk suction holes, the inlet of another second silk suction hole is connected to the outlet of another part of the first silk suction holes, the outlets of the two second silk suction holes are both connected to the inlet of the third silk suction hole, and the outlet of the third silk suction hole is connected to the discharge port, and the apertures of the first silk suction hole, the second silk suction hole and the third silk suction hole are all larger than the width of the thin silk and smaller than the length of the thin silk;

[0020] The tobacco sheet fixed-length shredding device further comprises a third suction component, which can absorb gas in the first suction hole, the second suction hole and the third suction hole.

[0021] As a preferred solution of the above-mentioned tobacco sheet fixed-length shredding device, the shredding roller also includes a fixedly arranged second air sleeve and a second air suction assembly, the second air sleeve is located between the mounting part and the shredding part, the mounting part and the shredding part both rotate relative to the second air sleeve, the second air sleeve is provided with a second negative pressure chamber, the second negative pressure chamber is connected to the second air suction assembly, and the second air suction assembly can absorb the gas in the second negative pressure chamber; the shredding part is provided with a third air vent, and the third air vent located at the second position and between the second position and the fourth position is connected to the second negative pressure chamber.

[0022] As a preferred solution of the above-mentioned tobacco sheet fixed-length shredding device, the shredding roller also includes a second blowing assembly; the second air sleeve is provided with a second positive pressure chamber that is not connected to the second negative pressure chamber, the second blowing assembly is connected to the second positive pressure chamber, the second blowing assembly can blow air into the second positive pressure chamber, and the third air vent located at the fourth position is connected to the second positive pressure chamber.

[0023] Beneficial effects of the present invention:

[0024] The present invention provides a tobacco sheet fixed-length shredding device. In the process of cutting tobacco sheets into thin slices, the tobacco sheets are adsorbed on the outer wall of a slicing roller. As the slicing roller rotates, the tobacco sheets move from an initial position to a first position. The slicing roller cooperates with a slicing knife roller to cut the tobacco sheets at the first position, so as to cut one tobacco sheet into multiple fixed-length slices. The lengths of the multiple fixed-length slices are all set lengths. The fixed-length thin slice formed after cutting is still adsorbed on the slicing roller. As the slicing roller rotates, the fixed-length thin slice moves from the first position to the second position. At the second position, the fixed-length thin slice detaches from the slicing roller and is adsorbed on the outer wall of the cutting roller. As the cutting roller rotates, the fixed-length thin slice moves from the second position to the third position. At the third position, the cutting knife roller cooperates with the cutting roller to cut the fixed-length thin slice into multiple thin slices. The length of each thin slice is a set length, and the width of each thin slice is a set width. As the cutting roller rotates, the thin slice moves from the third position to the fourth position, detaches from the cutting roller at the fourth position, and enters the hopper. The thin slices pass through the discharge port of the hopper in turn, and only one thin slice passes through the discharge port at a time. The tobacco sheet fixed-length shredding device first cuts tobacco sheets into fixed-length sheets with a set length, and then cuts the fixed-length sheets into thin slices with a set length and a set width, which can improve the length stability of the thin slices. In addition, the hopper can make the thin slices pass through the discharge port of the hopper in sequence, which can improve the orderly arrangement rate of the thin slices in the tobacco rod. In addition, the tobacco sheet fixed-length shredding device has a simple structure and high efficiency in processing thin slices. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic structural diagram of a tobacco sheet fixed-length shredding device provided by a specific embodiment of the present invention;

[0026] Figure 2 This is a schematic structural diagram of the cooperation between the slicing roller and the slicing knife roller in the tobacco sheet fixed-length shredding device provided by a specific embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a portion of a slicing roller in a tobacco sheet fixed-length shredding device provided by a specific embodiment of the present invention;

[0028] Figure 4 This is a schematic structural diagram of the cooperation between the cutting roller and the cutting knife roller in the tobacco sheet fixed-length cutting device provided by a specific embodiment of the present invention;

[0029] Figure 5 This is a cross-sectional view of the coordination between the cutting roller and the hopper in the tobacco sheet fixed-length cutting device provided by a specific embodiment of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the cooperation between the cutting roller and the hopper in the tobacco sheet fixed-length cutting device provided by a specific embodiment of the present invention.

[0031] In the picture:

[0032] 1. Tobacco flakes;

[0033] 2. Fixed-length sheets;

[0034] 3. Thin sheets of silk;

[0035] 4. Slicing roller; 41. Mounting roller; 42. Slicing knife; 43. First air distribution sleeve; 44. First suction assembly; 45. First blowing assembly; 46. Slicing knife connector; 47. First groove; 411. First vent hole; 421. Second vent hole; 431. First negative pressure chamber; 432. First positive pressure chamber;

[0036] 5. Slicing knife roller; 51. First blade; 52. Knife roller; 53. Knife pressing block; 54. Blade connecting piece;

[0037] 6. Cutting roller; 61. Mounting member; 62. Cutting member; 63. Second air distribution sleeve; 64. Second suction assembly; 65. Second blowing assembly; 66. Cutting connector; 67. Sealing member; 621. Second groove; 622. Third through hole; 631. Second negative pressure chamber; 632. Second positive pressure chamber;

[0038] 7. Slicing knife roller; 71. Knife shaft; 72. Second blade; 73. Spacer; 74. Blade clamping piece;

[0039] 8. Hopper; 81. First wire suction hole; 82. Second wire suction hole; 83. Third wire suction hole;

[0040] 9. Dust collection component;

[0041] 10. The third air intake assembly. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0043] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, terms such as "upper," "lower," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0046] The present invention provides a tobacco sheet fixed length cutting device for cutting tobacco sheets 1 into thin sheets 3 with a set width and a set length, such as Figure 1As shown, the tobacco sheet fixed-length shredding device includes a slicing roller 4, a slicing knife roller 5, a shredding roller 6, a shredding knife roller 7 and a hopper 8. The slicing roller 4 is configured to adsorb the tobacco sheet 1 to the outer wall of the slicing roller 4 and drive the tobacco sheet 1 to move from the initial position to the first position; the slicing knife roller 5 is configured to cooperate with the slicing roller 4 to cut the tobacco sheet 1 at the first position so that the tobacco sheet 1 is divided into a plurality of fixed-length slices 2 with a set length; the slicing roller 4 can drive the fixed-length slice 2 to move from the first position to the second position; the shredding Roller 6 is configured to adsorb the fixed-length sheet 2 to the outer wall of the cutting roller 6 and drive the fixed-length sheet 2 to move from the second position to the third position; the cutting knife roller 7 is configured to cooperate with the cutting roller 6 to cut the fixed-length sheet 2 located at the third position into multiple thin sheet wires 3 with a set width and a set length; the cutting roller 6 can drive the thin sheet wires 3 to move from the third position to the fourth position; the feed port of the hopper 8 is located at the fourth position, and the hopper 8 is configured so that multiple thin sheet wires 3 with a set width and a set length can pass through the discharge port of the hopper 8 in sequence.

[0047] In the process of cutting tobacco sheets 1 into thin slices 3, the tobacco sheet fixed-length shredding device manually unrolls the rolled tobacco sheet 1 into a single layer state, and places the single-layer tobacco sheet 1 at an initial position. The tobacco sheet 1 is adsorbed on the outer wall of the slicing roller 4. As the slicing roller 4 rotates, the tobacco sheet 1 moves from the initial position to the first position. The slicing roller 4 cooperates with the slicing knife roller 5 to cut the tobacco sheet 1 at the first position, so as to cut one tobacco sheet 1 into multiple fixed-length slices 2, and the lengths of the multiple fixed-length slices 2 are all set lengths. The fixed-length thin slice 2 formed after cutting is still attached to the slicing roller 4. As the slicing roller 4 rotates, the fixed-length thin slice 2 moves from the first position to the second position. At the second position, the fixed-length thin slice 2 is separated from the slicing roller 4 and attached to the outer wall of the shredding roller 6. As the shredding roller 6 rotates, the fixed-length thin slice 2 moves from the second position to the third position. At the third position, the shredding knife roller 7 cooperates with the shredding roller 6 to cut the fixed-length thin slice 2 into multiple thin slices 3. The length of each thin slice 3 is a set length, and the width of each thin slice 3 is a set width. The tobacco thin slice fixed-length shredding device first cuts the tobacco thin slice 1 into fixed-length thin slices 2 of a set length, and then cuts the fixed-length thin slice 2 into thin slices 3 of a set length and a set width. This can improve the length stability of the thin slices 3. In addition, the tobacco thin slice fixed-length shredding device has a simple structure and high efficiency in processing the thin slices 3. It can be understood that the first position is located between the slicing roller 4 and the slicing knife roller 5, the second position is located between the slicing roller 4 and the cutting roller 6, and the third position is located between the cutting roller 6 and the cutting knife roller 7.

[0048] Preferably, the width of the tobacco sheet 1 is in the range of 60 mm to 500 mm. The width of the tobacco sheet 1 is smaller than the axial length of the slicing roller 4, and the width of the tobacco sheet 1 is smaller than the axial length of the cutting roller 6.

[0049] In the embodiment of the present invention, Figure 2 and Figure 3 As shown, the slicing roller 4 is rotatable along its central axis and is provided with a plurality of first grooves 47 spaced circumferentially along the slicing roller 4. The first grooves 47 extend axially along the slicing roller 4. The slicing blade roller 5 includes a blade roller 52 rotatable along its central axis and a plurality of first blades 51 fixed to the blade roller 52. The plurality of first blades 51 are spaced circumferentially along the blade roller 52. The first blades 51 are configured such that the first blades 51 located in the first position can penetrate the first grooves 47 located in the first position to cut the tobacco sheet 1 located in the first position. It will be understood that the central axis of the slicing roller 4 is parallel to the central axis of the blade roller 52. The slicing roller 4 rotates in an opposite direction to that of the blade roller 52. The slicing roller 4 engages with the slicing blade roller 5. When the slicing roller 4 rotates by the angle between two adjacent first grooves 47, the slicing blade roller 5 rotates by the angle between two first blades 51. The plurality of first blades 51 rotate with the slicing blade roller 5, sequentially passing through the first position. As the slicing roller 4 rotates, the multiple first grooves 47 on the slicing roller 4 pass through the first position in sequence. When the first blade 51 rotates to the first position, the first grooves 47 also rotate to the first position, and the first blade 51 passes through the first grooves 47 to cut the tobacco sheet 1 along the axial direction of the slicing roller 4. Preferably, the circumferential speed of the slicing roller 4 is faster than the moving speed of the tobacco sheet 1, so that a gap is formed between adjacent fixed-length sheets 2.

[0050] Optionally, the first blade 51 is mounted on the blade mounting roller 52 via a blade connector 54. Optionally, the blade connector 54 is a bolt.

[0051] Optionally, the slicing knife roller 5 further includes a knife pressing block 53, which is located between the first blade 51 and the blade connecting member 54. The knife pressing block 53 can make the first blade 51 bear the force evenly and prevent the first blade 51 from deforming.

[0052] Preferably, the first blades 51 are made of metal. The number of the first blades 51 is 5-50.

[0053] In this embodiment of the present invention, the slicing roller 4 includes a mounting roller 41 rotatably arranged along its central axis and a plurality of slicing knives 42 fixedly mounted on the mounting roller 41. The plurality of slicing knives 42 are spaced apart along the circumference of the mounting roller 41, with a first groove 47 formed between two adjacent slicing knives 42 and the mounting roller 41. When the first blade 51 enters the first groove 47, it abuts against the slicing knives 42, thereby easily cutting the tobacco sheet 1 between the first blade 51 and the slicing knives 42.

[0054] Preferably, the slicing block knives 42 are made of wear-resistant material, such as ceramic material. The number of slicing block knives 42 is 5-50.

[0055] Preferably, the mounting roller 41 has a first plane spaced apart along its circumference, the slicing block knife 42 has a second plane and an arc surface opposite thereto, the second plane of the slicing block knife 42 is in contact with the first plane of the mounting roller 41, and the central axis of the arc surface coincides with the central axis of the mounting roller 41.

[0056] Optionally, the slicing block knife 42 is mounted on the mounting roller 41 via a block knife connector 46. The block knife connector 46 is a bolt.

[0057] In the embodiment of the present invention, the slicing roller 4 further includes a fixed first air distribution sleeve 43 and a first air suction assembly 44. The first air distribution sleeve 43 is located within the mounting roller 41, and the mounting roller 41 rotates relative to the first air distribution sleeve 43. The first air distribution sleeve 43 is provided with a first negative pressure chamber 431, which is connected to the first air suction assembly 44. The first air suction assembly 44 can absorb gas within the first negative pressure chamber 431. The mounting roller 41 is provided with a first air vent 411, and the slicing knife 42 is provided with a second air vent 421 connected to the first air vent 411. The first air vent 411 located in the initial position and between the initial position and the second position is connected to the first negative pressure chamber 431. The first air distribution sleeve 43 is fixed, and the mounting roller 41 rotates along the central axis of the mounting roller 41 with the slicing knife 42. The first air vent 411 on the mounting roller 41 also rotates with the mounting roller 41. When the first air vent 411 is in the initial position and between the initial position and the second position, it is connected to the first negative pressure chamber 431. It is understood that the first vent hole 411 at the second position is not in communication with the first negative pressure chamber 431. The first suction assembly 44 draws air from the first negative pressure chamber 431, as well as from the first vent hole 411 and the second vent hole 421, thereby adsorbing the tobacco sheet 1 onto the outer wall of the slicing roller 4, moving it from the initial position to the first position, and adsorbing the fixed-length sheet 2 onto the outer wall of the slicing roller 4, moving it from the first position to the second position.

[0058] In this embodiment of the present invention, the slicing roller 4 further includes a first air blowing assembly 45; the first air sleeve 43 is provided with a first positive pressure chamber 432 that is not connected to the first negative pressure chamber 431. The first air blowing assembly 45 is connected to the first positive pressure chamber 432 and can blow air into the first positive pressure chamber 432. The first air vent 411 located in the second position is connected to the first positive pressure chamber 432. The air blown by the first air blowing assembly 45 passes through the first positive pressure chamber 432 and the first air vent 411 located in the second position, and is blown out through the second air vent 421 located in the second position, thereby separating the fixed-length sheet 2 located in the second position from the slicing roller 4.

[0059] It is understood that there are multiple first vent holes 411 and multiple second vent holes 421, and the multiple first vent holes 411 are arranged in a one-to-one correspondence with the multiple second vent holes 421. Preferably, the number of first vent holes 411 and second vent holes 421 is 10-200. The aperture range of the first vent holes 411 and second vent holes 421 is 0.1 mm-5 mm.

[0060] In the embodiment of the present invention, Figure 4 and Figure 5 As shown, the shredding roller 6 is rotatably arranged along its own central axis and is provided with a plurality of second grooves 621 spaced apart along the axial direction of the shredding roller 6. The second grooves 621 extend circumferentially along the shredding roller 6. The shredding knife roller 7 includes a knife shaft 71 and a plurality of second blades 72 fixedly disposed on the knife shaft 71. The plurality of second blades 72 are spaced apart along the axial direction of the knife shaft 71. The plurality of second blades 72 are disposed in a one-to-one correspondence through the plurality of second grooves 621 at a third position to cut the fixed-length sheet 2 at the third position into a plurality of thin slice strands 3. At the third position, the plurality of second blades 72 are disposed in a one-to-one correspondence through the plurality of second grooves 621. The second blades 72 cooperate with the second grooves 621 to cut the fixed-length sheet 2 passing through the intersecting position of the two. When the fixed-length sheet 2 passes through the third position, it is continuously cut into a plurality of thin slice strands 3 by the plurality of second blades 72 along the rotation direction of the shredding roller 6. It can be understood that the number of second grooves 621 and second blades 72 is equal, and multiple second grooves 621 are arranged in a one-to-one correspondence with multiple second blades 72. The number of second grooves 621 and second blades 72 is related to the width of the tobacco sheet 1 and the set width of the sheet filament 3.

[0061] Optionally, the central axis of the shredding roller 6 is arranged parallel to the central axis of the shredding blade roller 7, and the rotation direction of the shredding roller 6 is opposite to that of the shredding blade roller 7. Preferably, the circumferential rotational speed of the shredding blade roller 7 is faster than the circumferential rotational speed of the shredding blade roller 6. Optionally, the shredding blade roller 7 further includes a plurality of spacers 73, one of which is provided between two adjacent second blades 72. This ensures that the distance between all adjacent second blades 72 remains consistent, thereby ensuring a uniform width of the thin film 3.

[0062] Optionally, the second blade 72 is fixed to the blade mounting shaft 71 via a blade clamping member 74 .

[0063] In this embodiment of the present invention, the cutting roller 6 includes a mounting member 61 rotatably mounted along its central axis and a cutting member 62 fixedly mounted on the mounting member 61. The cutting member 62 is provided with a plurality of second grooves 621 spaced apart along the axial direction of the cutting member 62. The second grooves 621 extend circumferentially along the cutting member 62. Optionally, the cutting member 62 is fixedly connected to the mounting member 61 via a cutting connector 66. The cutting connector 66 is a bolt.

[0064] In the embodiment of the present invention, the cutting roller 6 further includes a fixedly arranged second air supply sleeve 63 and a second air suction assembly 64. The second air supply sleeve 63 is located between the mounting member 61 and the cutting member 62. The mounting member 61 and the cutting member 62 both rotate relative to the second air supply sleeve 63. The second air supply sleeve 63 is provided with a second negative pressure chamber 631, which is connected to the second air suction assembly 64. The second air suction assembly 64 can absorb the gas in the second negative pressure chamber 631. The cutting member 62 is provided with a third air vent. The third air vent located at the second position and between the second and fourth positions is connected to the second negative pressure chamber 631. The second air suction assembly 64 absorbs the gas in the second negative pressure chamber 631 and also absorbs the gas in the third air vent located at the second position and between the second and fourth positions, thereby adsorbing the fixed-length sheet 2 onto the outer wall of the cutting roller 6 and driving it from the second position to the third position. The thin sheet 3 is adsorbed onto the outer wall of the slicing roller 4 and driving it from the third position to the fourth position. It can be understood that the third vent hole located at the fourth position is not connected to the second negative pressure chamber 631 .

[0065] In this embodiment of the present invention, the cutting roller 6 further includes a second blowing assembly 65; the second air distribution sleeve 63 is provided with a second positive pressure chamber 632 that is not connected to the second negative pressure chamber 631. The second blowing assembly 65 is connected to the second positive pressure chamber 632 and can blow air into the second positive pressure chamber 632. The third air vent located at the fourth position is connected to the second positive pressure chamber 632. The air blown by the second blowing assembly 65 passes through the second positive pressure chamber 632 and is blown out through the third air vent located at the fourth position, thereby separating the thin film 3 located at the fourth position from the cutting roller 6.

[0066] It is understood that the number of third ventilation holes is multiple, and the multiple third ventilation holes are spaced apart. The number of third ventilation holes and the distance between two adjacent third ventilation holes are related to parameters such as the set width of the thin film filament 3 and the density of the thin film filament 3, so as to ensure that the cutting roller 6 can firmly adsorb the fixed-length sheet 2 and the thin film filament 3 on the cutting roller 6 and can drive both of them to move. Preferably, the number of third ventilation holes is 10-200. The aperture of the third ventilation holes is smaller than the width of the thin film filament 3, and the aperture range of the third ventilation holes is 0.1mm-2mm.

[0067] Optionally, the cutting roller 6 further includes a seal 67 , which is disposed between the second air distribution sleeve 63 and the cutting piece 62 to prevent gas in the second positive pressure chamber 632 and / or the second negative pressure chamber 631 from leaking from between the second air distribution sleeve 63 and the cutting piece 62 .

[0068] Alternatively, as Figure 6As shown, the hopper 8 is provided with a plurality of first wire suction holes 81, two second wire suction holes 82 and a third wire suction hole 83. The inlets of the plurality of first wire suction holes 81 are all connected to the feed port, the inlet of one second wire suction hole 82 is connected to the outlet of a part of the first wire suction holes 81, the inlet of another second wire suction hole 82 is connected to the outlet of another part of the first wire suction holes 81, the outlets of the two second wire suction holes 82 are both connected to the inlet of the third wire suction hole 83, and the outlet of the third wire suction hole 83 is connected to the discharge port. The apertures of the first wire suction hole 81, the second wire suction hole 82 and the third wire suction hole 83 are all larger than the width of the thin wire 3 and smaller than the length of the thin wire 3; the tobacco sheet fixed-length shredding device also includes a third suction component 10, which can absorb the gas in the first wire suction hole 81, the second wire suction hole 82 and the third wire suction hole 83.

[0069] The hopper 8 is used to collect the cut thin silk filaments 3. The filament cutting roller 6 can absorb the thin silk filaments 3 to transport the thin silk filaments 3 from the third position to the fourth position. The thin silk filaments 3 are separated from the filament cutting roller 6 at the fourth position and fall into the hopper 8. Under the action of the third suction assembly 10, the thin silk filaments 3 pass through the first suction hole 81, the second suction hole 82 and the third suction hole 83 in sequence. The inlet of each second suction hole 82 is connected to the outlet of two or more adjacent first suction holes 81, so that the thin silk filaments 3 in the two or more adjacent first suction holes 81 can enter the second suction hole 82 in an orderly manner. The outlets of the two second suction holes 82 are both connected to the inlet of the third suction hole 83, so that the thin silk filaments 3 in the two second suction holes 82 can enter the third suction hole 83 in an orderly manner. Since the apertures of the first, second, and third wire suction holes 81, 82, and 83 are all larger than the width of the thin wire 3 and smaller than the length of the thin wire 3, the hole walls of the first, second, and third wire suction holes 81, 82, and 83 can limit the inclination angle of the thin wire 3 in the hole, so that the inclination angle of the thin wire 3 when it leaves the discharge port is within the set range, thereby improving the orderly arrangement rate of the thin wire 3 in the tobacco rod.

[0070] In an embodiment of the present invention, the tobacco sheet fixed-length shredding device also includes a dust suction component 9, which is used to absorb dust, debris, etc. in the process of cutting the tobacco sheet 1 into fixed-length slices 2, and to absorb dust, debris, etc. in the process of cutting the fixed-length slices 2 into thin slice shreds 3.

[0071] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A tobacco sheet fixed length cutting device for cutting tobacco sheets (1) into thin sheets (3) with a set width and a set length, characterized in that: include: a slicing roller (4), the slicing roller (4) being configured to adsorb the tobacco sheet (1) onto an outer wall of the slicing roller (4) and drive the tobacco sheet (1) to move from an initial position to a first position; a slicing knife roller (5), the slicing knife roller (5) being configured to cooperate with the slicing roller (4) to cut the tobacco sheet (1) located at the first position so as to divide the tobacco sheet (1) into a plurality of fixed-length sheets (2) having a set length; The slicing roller (4) can drive the fixed-length sheet (2) to move from the first position to the second position; a cutting roller (6), wherein the cutting roller (6) is configured to adsorb the fixed-length sheet (2) onto the outer wall of the cutting roller (6) and drive the fixed-length sheet (2) to move from the second position to the third position; a slitting knife roller (7), the slitting knife roller (7) being configured to cooperate with the slitting roller (6) to cut the fixed-length sheet (2) located at the third position into a plurality of sheet strands (3) having a set width and a set length; The cutting roller (6) can drive the thin wire (3) to move from the third position to the fourth position; A hopper (8), wherein the feed port of the hopper (8) is located at the fourth position, and the hopper (8) is configured so that a plurality of thin sheet filaments (3) with a set width and a set length can sequentially pass through the discharge port of the hopper (8); The slicing roller (4) is arranged to rotate along its own central axis, and the slicing roller (4) is provided with a plurality of first grooves (47) arranged at intervals along the circumference of the slicing roller (4), and the first grooves (47) extend axially along the slicing roller (4); the slicing knife roller (5) comprises a knife roller (52) arranged to rotate along its own central axis and a plurality of first blades (51) fixedly arranged on the knife roller (52), and the plurality of first blades (51) are arranged at intervals along the circumference of the knife roller (52), and the first blades (51) are configured so that the first blade (51) located at the first position can penetrate the first groove (47) located at the first position to cut the tobacco sheet (1) located at the first position; The hopper (8) is provided with a plurality of first silk-sucking holes (81), two second silk-sucking holes (82) and a third silk-sucking hole (83), the inlets of the plurality of first silk-sucking holes (81) are all connected to the feed port, the inlet of one of the second silk-sucking holes (82) is connected to the outlet of a part of the first silk-sucking holes (81), the inlet of another second silk-sucking hole (82) is connected to the outlet of another part of the first silk-sucking holes (81), the outlets of the two second silk-sucking holes (82) are both connected to the inlet of the third silk-sucking hole (83), the outlet of the third silk-sucking hole (83) is connected to the discharge port, the apertures of the first silk-sucking hole (81), the second silk-sucking hole (82) and the third silk-sucking hole (83) are all larger than the width of the thin silk (3) and smaller than the length of the thin silk (3); The tobacco sheet fixed-length cutting device further comprises a third suction component (10), and the third suction component (10) can absorb the gas in the first suction hole (81), the second suction hole (82) and the third suction hole (83).

2. The tobacco sheet cutting device according to claim 1, characterized in that: The slicing roller (4) comprises a mounting roller (41) rotatably arranged along its own central axis and a plurality of slicing block knives (42) fixedly arranged on the mounting roller (41); the plurality of slicing block knives (42) are arranged at intervals along the circumference of the mounting roller (41); and the first groove (47) is formed between two adjacent slicing block knives (42) and the mounting roller (41).

3. The tobacco sheet cutting device according to claim 2, characterized in that: The slicing roller (4) further comprises a fixedly arranged first air sleeve (43) and a first air suction component (44); the first air sleeve (43) is located in the mounting roller (41); the mounting roller (41) rotates relative to the first air sleeve (43); the first air sleeve (43) is provided with a first negative pressure chamber (431); the first negative pressure chamber (431) is communicated with the first air suction component (44); the first air suction component (44) can absorb the gas in the first negative pressure chamber (431); the mounting roller (41) is provided with a first vent hole (411); the slicing knife (42) is provided with a second vent hole (421) communicated with the first vent hole (411); the first vent hole (411) located at the initial position and between the initial position and the second position is communicated with the first negative pressure chamber (431).

4. The tobacco sheet cutting device according to claim 3, characterized in that: The slicing roller (4) further includes a first blowing assembly (45); the first air sleeve (43) is provided with a first positive pressure chamber (432) which is not connected to the first negative pressure chamber (431); the first blowing assembly (45) is connected to the first positive pressure chamber (432); the first blowing assembly (45) can blow air into the first positive pressure chamber (432); and the first vent hole (411) located at the second position is connected to the first positive pressure chamber (432).

5. The tobacco sheet cutting device according to claim 1, characterized in that: The shredding roller (6) is arranged to rotate along its own central axis, and the shredding roller (6) is provided with a plurality of second grooves (621) arranged at intervals along the axial direction of the shredding roller (6), and the second grooves (621) extend along the circumference of the shredding roller (6); the shredding knife roller (7) includes a knife shaft (71) and a plurality of second blades (72) fixedly arranged on the knife shaft (71), and the plurality of second blades (72) are arranged at intervals along the axial direction of the knife shaft (71), and the plurality of second blades (72) are arranged in a one-to-one correspondence in the plurality of second grooves (621) at the third position to cut the fixed-length thin sheet (2) located at the third position into a plurality of thin sheet wires (3).

6. The tobacco sheet cutting device according to claim 5, characterized in that: The cutting roller (6) includes a mounting member (61) rotatably arranged along its own central axis and a cutting member (62) fixedly arranged on the mounting member (61), and the cutting member (62) is provided with a plurality of second grooves (621) spaced apart along the axial direction of the cutting member (62), and the second grooves (621) extend along the circumference of the cutting member (62).

7. The tobacco sheet cutting device according to claim 6, characterized in that: The cutting roller (6) further includes a second air distribution sleeve (63) and a second air suction component (64) which are fixedly arranged. The second air distribution sleeve (63) is located between the mounting member (61) and the cutting member (62). The mounting member (61) and the cutting member (62) both rotate relative to the second air distribution sleeve (63). The second air distribution sleeve (63) is provided with a second negative pressure chamber (631). The second negative pressure chamber (631) is connected to the second air suction component (64). The second air suction component (64) can absorb the gas in the second negative pressure chamber (631). The cutting member (62) is provided with a third air vent. The third air vent located at the second position and between the second position and the fourth position is connected to the second negative pressure chamber (631).

8. The tobacco sheet cutting device according to claim 7, characterized in that: The cutting roller (6) also includes a second blowing assembly (65); the second air sleeve (63) is provided with a second positive pressure chamber (632) that is not connected to the second negative pressure chamber (631), the second blowing assembly (65) is connected to the second positive pressure chamber (632), and the second blowing assembly (65) can blow air into the second positive pressure chamber (632), and the third vent located at the fourth position is connected to the second positive pressure chamber (632).

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