Flexible loose feeding device for tobacco blocks

Abstract

The utility model provides a flexible loose feeding device for tobacco blocks, which comprises a conveying belt and a piece separating roller, the piece separating roller is arranged at the tail end of the conveying belt, the rotating direction of the conveying belt is consistent with that of the piece separating roller, an embedded block is arranged on the outer wall of the piece separating roller, and the embedded block rotates along with the piece separating roller; the conveying belt is used for conveying tobacco blocks to the upper end of the slicing roller, the embedded block is used for being embedded into the bottom end face of a single tobacco sheet at the upper end of the slicing roller, and the slicing roller and the embedded block are used for conveying the embedded single tobacco sheet away from the slicing roller in an accelerated mode. According to the flexible loose feeding device for the tobacco blocks, the splitting roller is arranged on the lower sides of the tobacco sheets, the embedded blocks are embedded into the bottoms of the tobacco sheets, the splitting roller and the embedded blocks can directly act on the tobacco sheets, the process of independently separating one tobacco sheet from the tobacco blocks can be smoothly completed, the splitting roller and the tobacco sheets do not need to abut against each other through elastic force of springs, and the separation effect is good.

Description

Technical Field

[0001] This utility model relates to a tobacco sheet production equipment, specifically, to a flexible and loose tobacco block feeding device. Background Technology

[0002] In the tobacco sheet production line, the main task of the loosening and rehydration process is to increase the moisture content and temperature of the tobacco blocks, improve their workability, and make them loose without clumping or agglomeration, thereby improving the sensory quality of the tobacco sheets.

[0003] However, before entering the loosening and rehydration process, the tobacco clumps remain relatively dense due to the adhesion between the tobacco leaves. This results in the tobacco leaves not being completely loosened after loosening and rehydration, with some still clumping together. This causes a series of problems in subsequent processes. Therefore, it is necessary to separate the tobacco clumps into individual tobacco leaves before entering the loosening and rehydration process to achieve the purpose of pre-loosening and maximize the effectiveness of the loosening and rehydration process.

[0004] For example, Chinese utility model patent CN201621286622.6 discloses a tobacco block loosening and rehydration device. This device can pre-loosen the tobacco blocks on the conveyor belt with a loosening roller before the tobacco blocks enter the loosening and rehydration drum, breaking them into smaller tobacco blocks (i.e., the tobacco flakes mentioned above) before feeding them into the loosening and rehydration drum. In this way, the tobacco blocks can absorb heat and moisture more fully in the drum, increasing the loosening rate, reducing the weight of clumps and the fluctuation of moisture content at the drum outlet, which is beneficial to the stability of the next process. At the same time, it reduces the breakage of tobacco flakes in the drum and reduces raw material consumption.

[0005] However, the technical solutions presented in the aforementioned public documents still have some problems in actual use. Setting the loosening roller above the tobacco blocks on the conveyor belt requires adjusting the distance between the loosening roller and the surface of the conveyor belt according to the size of the tobacco blocks. Moreover, the loosening roller and the tobacco blocks need to rely on the elastic force of the spring to resist each other. The elastic force of the spring is also distributed on the positioning pressure plate. Therefore, when the loosening roller and the rake nails on the roller body act on the tobacco blocks by the elastic force of the spring, the friction between them and the tobacco blocks is limited. This may result in the tobacco blocks not being completely separated, leading to an unsatisfactory separation effect and failing to completely solve the problem of adhesion between tobacco blocks.

[0006] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a flexible and loose feeding device for smoke blocks.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a conveyor belt and a slitting roller, the slitting roller is located at the end of the conveyor belt, the conveyor belt and the slitting roller rotate in the same direction, the outer wall of the slitting roller is provided with an insert, the insert rotates with the slitting roller; the conveyor belt is used to transport tobacco sheets to the upper end of the slitting roller, the insert is used to embed into the bottom end face of a single piece of tobacco sheet at the upper end of the slitting roller, and the slitting roller and the insert are used to accelerate the embedded single piece of tobacco sheet away from the slitting roller.

[0009] Based on the above, the conveyor belt is inclined upwards in the conveying direction.

[0010] Based on the above, the end of the insert away from the dividing roller is set as an acute angle side, the acute angle side is parallel to the axis of the dividing roller, and the included angle between the faces of the insert on both sides of the acute angle side is set as an acute angle.

[0011] Based on the above, the insert is provided with a tangent surface on one side of the acute angle edge that is tangent to the outer wall of the segmenting roller. The tangent surface faces the conveyor belt when the insert rotates, and a rib is provided on the tangent surface at the acute angle edge.

[0012] Based on the above, the outer wall of the slitting roller is also provided with roller teeth to increase the friction when the slitting roller contacts the tobacco sheet.

[0013] Based on the above, it also includes a sliding support, which is provided with an arc-shaped sliding rod with a gradually decreasing slope. The arc-shaped sliding rod is used to receive the tobacco sheet that is sent away from the splitting roller and to make the tobacco sheet slide from an inclined position to a horizontal position.

[0014] Based on the above, it also includes a scatterer, which is located at the end of the sliding support. The scatterer is configured as a rotatable smoke-dispersing fork. The rotating shafts of the sliding roller and the smoke-dispersing fork are parallel, and the radial forks on the smoke-dispersing fork are staggered with the arc-shaped slide rod.

[0015] Based on the above, the sliding support includes a support baffle, and the two ends of the support baffle are rotatably connected to the rotating shaft of the split roller and the rotating shaft of the smoke dispersing fork, respectively.

[0016] Based on the above, a transition plate is also provided between the conveyor belt and the segmented roller, and the transition plate is provided with a clearance groove to avoid the insert.

[0017] Based on the above, an anti-tipping baffle is also provided on the upper side of the slitting roller, which is used to abut against the front side of the upper end of the tobacco sheet.

[0018] This utility model has substantial features and advancements compared to existing technologies. Specifically, the flexible loose feeding device for tobacco blocks of this utility model has the following advantages: By placing the dividing roller on the underside of the tobacco sheet and embedding the insert into the bottom of the tobacco sheet, the dividing roller and the insert can directly act on the tobacco sheet, smoothly completing the process of separating a single tobacco sheet from the tobacco block without relying on the elasticity of a spring to make the dividing roller and the tobacco sheet collide, resulting in good separation effect; the use of a tobacco-dispersing fork type disperser in conjunction with a sliding bracket to disperse the tobacco block can disperse the tobacco sheet without damaging the structure of the tobacco, preventing breakage; the application of a transition plate and an anti-tipping baffle makes the process of separating tobacco sheets one by one smoother; the application of a proximity switch and a camera effectively records the data of the tobacco block and tobacco sheet. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 yes Figure 1 Detailed view of point B in the middle;

[0021] Figure 3 This is a schematic diagram illustrating the process of separating tobacco sheets one by one according to this utility model;

[0022] Figure 4 yes Figure 3 Detailed image of point C in the middle;

[0023] Figure 5 yes Figure 1 A three-dimensional attempt from another perspective;

[0024] Figure 6 yes Figure 5 A sectional view along line AA.

[0025] Figure 7 yes Figure 6 Detailed view of point D in the middle;

[0026] Figure 8 This is a structural schematic diagram of the sliding support and its connected accessories in this utility model;

[0027] Figure 9 yes Figure 8 Detailed image of point E in the middle;

[0028] In the figure, the attached figures are labeled as follows:

[0029] 1. Conveyor belt; 2. Segment roller; 21. Insert; 22. Rib; 23. Roller tooth; 3. Disperser; 31. Radial fork; 32. Fork shaft; 4. Slide support; 41. Arc-shaped slide bar; 42. Support baffle; 43. Transition plate; 5. Anti-tipping baffle; 6. Proximity switch; 7. Discharge chute; 8. Conveying chute; 81. Camera; 9. Base support.

[0030] 100 tobacco blocks, 200 tobacco sheets. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0032] like Figures 1 to 9 As shown, the flexible loose feeding device for tobacco blocks of this utility model includes a conveyor belt 1 and a slitting roller 2. The conveyor belt 1 is used to transport tobacco blocks 100 to the upper end of the slitting roller 2. The slitting roller 2 is used to separate individual tobacco sheets 200 from the tobacco blocks 100. The tobacco sheets 200 are separated one by one from the tobacco blocks 100 on the conveyor belt 1. Separation is a pre-process of loosening and rehydration.

[0033] like Figure 3 , Figure 4 As shown, Figure 3 , Figure 4 This is a schematic diagram and detailed diagram of the process of separating tobacco sheets one by one in this device. The tobacco block 100 is composed of multiple tobacco sheets 200. The tobacco sheets 200 are all placed on the conveyor belt 1 and arranged against each other in the conveying direction of the conveyor belt 1 to form the tobacco block 100. The tobacco sheets 200 on the tobacco block 100 may stick together with each other due to various reasons such as high ambient humidity and high moisture content of tobacco leaves.

[0034] like Figure 2 , Figure 7 As shown, Figure 2 This is a detailed view of the slitting roller of this device. Figure 7 This is a cross-sectional view of the dividing roller of this device, wherein the dividing roller 2 is located at the end of the conveyor belt 1. The conveyor belt 1 and the dividing roller 2 rotate in the same direction. The conveying surface of the conveyor belt 1 is tangent to the top of the roller surface of the dividing roller 2. In this way, the conveyor belt 1 can smoothly transport the tobacco block 100 to the upper end of the dividing roller 2.

[0035] like Figure 2 , Figure 4 , Figure 7 , Figure 9 As shown, Figure 9 The diagram shows a detail of the insert. An insert 21 is fixedly installed on the outer wall of the dividing roller 2. The insert 21 is arranged along the axial direction of the dividing roller 2 and rotates with the rotation of the dividing roller 2. When the conveyor belt 1 transports the tobacco sheet 200 at the foremost end of the tobacco block 100 to the upper end of the dividing roller 2, the insert 21, protruding from the roller surface of the dividing roller 2, will embed into the bottom end face of the tobacco sheet 200 at the foremost end of the tobacco block 100. As the insert 21 continues to rotate, it will cause the tobacco sheet 200 to separate from the tobacco block 100.

[0036] Due to the dense nature of the tobacco sheet 200, its individual density is relatively high and its weight is relatively heavy. Therefore, the insert 21 can be easily embedded into the bottom surface of the tobacco sheet 200.

[0037] To accelerate the lower end of the embedded tobacco sheet 200 away from the separating roller 2, the rotational speed of the separating roller 2 is greater than that of the conveyor belt 1. Thus, after the conveyor belt 1 transports the tobacco block 100 to the upper end of the separating roller 2 along the conveying direction, the separating roller 2 and the insert 21 act on the bottom of the tobacco sheet 200, thereby accelerating the bottom of the tobacco sheet 200. This causes the lower end of the tobacco sheet 200 to be accelerated relative to its upper end, resulting in the lower end of the tobacco sheet 200 tilting away from the upper end of the tobacco sheet 200 relative to the upper end of the tobacco sheet 200. After the insert 21 separates from the tobacco sheet 200, the lower end of the tobacco sheet 200 is brought to the side of the separating roller 2 away from the conveyor belt 1. At this time, the tobacco sheet 200, relying on its own weight and the friction of the roller surface of the separating roller 2, will fall smoothly from the side of the separating roller 2, completing the process of separating a tobacco sheet 200 from the tobacco block 100. This process is repeated so that the tobacco sheets 200 are carried away from the conveyor belt 1 one by one.

[0038] like Figure 6 As shown, Figure 6 This is a cross-sectional view of the entire device. The conveyor belt 1 is tilted upward at a certain angle, so that the overall conveying direction of the smoke block 100 is also tilted upward. Therefore, the lower end of the smoke sheet 200 is tilted outward relative to its upper end. Thus, when the insert 21 acts on the smoke sheet 200, the upper end of the smoke sheet 200 is not easy to tilt forward.

[0039] like Figure 2 As shown, multiple inserts 21 are arranged in a straight line along the axial direction of the splitting roller 2, and the multiple inserts 21 are set at equal intervals, which is beneficial for the inserts 21 to be embedded into the tobacco sheet 200.

[0040] like Figure 7 As shown, the end of the insert 21 away from the dividing roller 2 is set as an acute angle side, which is parallel to the axis of the dividing roller 2. The included angle between the two sides of the acute angle side of the insert 21 is set as an acute angle. In this way, when the insert 21 rotates, when the acute angle side comes into contact with the tobacco sheet 200, it can be smoothly embedded into the bottom end surface of the tobacco sheet 200. Then, the surface on one side of the acute angle side can push the lower end of the tobacco sheet 200 to be accelerated away from the dividing roller 2, thus completing the process of separating a tobacco sheet 200 from the tobacco block 100.

[0041] like Figure 7As shown, the insert 21 has one side of its acute-angled edge tangent to the outer wall of the slitting roller 2. This tangent surface faces the conveyor belt 1 when the insert 21 rotates. Thus, when the tobacco sheet 200 is fed above the slitting roller 2, the acute-angled edge and the tangent surface simultaneously contact the tobacco sheet 200. Then, as the acute-angled edge embeds into the tobacco sheet 200 and the tangent surface pushes the lower end of the tobacco sheet 200 away from the slitting roller 2, the contact area between the tangent surface and the tobacco sheet 200 is maximized to disperse the pressure of the thrust and prevent the lower end of the tobacco sheet 200 from breaking and failing to embed. Preferably, the tangent surface is directly connected to the roller surface of the slitting roller 2.

[0042] like Figure 9 As shown, the end of the insert 21 away from the dividing roller 2 is provided with a rib 22 extending in the direction of rotation, which facilitates the insertion of the insert 21 into the tobacco sheet 200.

[0043] like Figure 7 , Figure 9 As shown, the outer periphery of the slitting roller 2 is also provided with roller teeth 23, which can increase the friction when the slitting roller 2 contacts the tobacco sheet.

[0044] like Figure 7 , Figure 8 , Figure 9 As shown, a transition plate 5 is also provided between the conveyor belt 1 and the slitting roller 2. The upper surface of the transition plate 5 is flush with the conveying surface of the conveyor belt 1. The transition plate 5 is provided with a clearance groove for the clearance block 21. Therefore, the transition plate 5 can receive the tobacco sheet 200 sent from the conveyor belt 1 to the slitting roller 2, and at the same time, it can make the block 21 rotate through the clearance groove to embed into the tobacco sheet 200.

[0045] like Figure 8 As shown, Figure 8 This is a structural diagram of the sliding support and its connected accessories. The device also includes a scatterer 3 and a sliding support 4. After the tobacco sheets 200 are separated one by one, they are sent to the scatterer 3 by the sliding support 4 to be scattered. Scattering is a pre-process of loosening and rehydration.

[0046] like Figure 8 As shown, a sliding support 4 is provided between the dividing roller 2 and the dispersing device 3. One end of the sliding support 4 is located on the lower side of the dividing roller 2. The sliding support 4 is provided with an arc-shaped sliding rod 41 with a gradually decreasing slope. The inner arc surface of the arc-shaped sliding rod 41 is used to receive the tobacco sheet 200 falling from the dividing roller 2. As the tobacco sheet 200 slides down the arc-shaped sliding rod 41, it gradually changes from an inclined position to a horizontal position, so that the tobacco sheet 200 can be dispersed by the dispersing device 3 at the end of the sliding support 4.

[0047] like Figure 8 As shown, the sliding support 4 also includes a transverse connecting rod 43 that connects the arc-shaped sliding rod 41 in series. The transverse connecting rod 43 will not interfere with the sliding of the tobacco sheet 200.

[0048] like Figure 8 As shown, the dispersant 3 is configured as a smoke-dispersing fork, which includes a fork shaft 32 and a radial fork 31 disposed on the fork shaft 32. The end of the arc-shaped slide bar 41 extends to a position close to the fork shaft 32. The fork shaft 32 is parallel to the shaft of the dividing roller 2, and the smoke-dispersing fork rotates in the opposite direction to the dividing roller 2. The radial fork 31 and the arc-shaped slide bar 41 are staggered. Thus, when a single tobacco piece 200 slides down to the vicinity of the smoke-dispersing fork and the tobacco piece 200 is nearly horizontal, the fork shaft 32 drives the radial fork 31 to rotate from above the tobacco piece 200 toward the tobacco piece 200, so that the radial fork 31 and the arc-shaped slide bar 41 act on the tobacco piece 200 between them, thereby dispersing the tobacco piece 200.

[0049] like Figure 8 As shown, multiple sets of radial forks 31 are equidistantly arranged around the circumference of the fork rotation axis 32. This can maintain the dynamic balance of the smoke-dispersing fork during rotation and disperse the smoke pieces 200 more efficiently.

[0050] Compared to existing equipment such as high-speed rotating dispersing rollers, the tobacco dispersing fork is a bending type of dispersing rather than a chopping type of dispersing. It disperses tobacco leaves by 200 without damaging the structure of the tobacco, thus preventing breakage.

[0051] like Figure 1 As shown, Figure 5 As shown, Figure 1 , Figure 5 This is a three-dimensional view of the entire device. The lower side of the disperser 3 is also provided with a discharge chute 7 to receive the tobacco flakes 200 that have been dispersed by the disperser 3.

[0052] like Figure 8 As shown, the sliding support 4 has support baffles 42 on both sides, and the two ends of the transverse connecting rod 43 are fixed on the support baffles 42. The arc-shaped sliding rod 41, the support baffles 42 and the transverse connecting rod 43 together form the sliding support 4.

[0053] like Figure 8 As shown, the two ends of the bracket baffle 42 are rotatably connected to the rotating shaft of the dividing roller 2 and the rotating shaft of the fork 32, respectively, and can be connected by bearings. Since the rotating directions of the dividing roller 2 and the smoke-dispersing fork are opposite, the sliding bracket 4 can remain relatively stable on the two rotating shafts. By setting the sliding bracket 4 on the rotating shaft of the dividing roller 2 and the rotating shaft of the fork 32, the sliding bracket 4 is suspended in the air. Compared with the solution of directly using a bracket to support the sliding bracket 4, the problem of the bracket blocking the falling of the scattered smoke pieces 200 can be prevented.

[0054] like Figure 8 , Figure 9 As shown, the transition plate 5 can be fixedly connected to the two support baffles 42 of the sliding support 4.

[0055] like Figure 2 , Figure 6 As shown, an anti-tipping baffle 6 is also provided on the upper side of the dividing roller 2. The anti-tipping baffle 6 is located on the upper side of the tobacco sheet 200 at the foremost end of the tobacco block 100. The anti-tipping baffle 6 is used to abut against the front side of the upper end of the tobacco sheet 200 at the foremost end of the tobacco block 100. When the adhesion between the tobacco sheets 200 is light or there is no adhesion, the anti-tipping baffle 6 can prevent the upper end of the tobacco sheet 200 from tilting away from the conveyor belt 1 before the insert 21 acts on the tobacco sheet 200. When the adhesion between the tobacco sheets 200 is severe, the anti-tipping baffle 6 can also prevent the dividing roller 2 from sending multiple tobacco sheets 200 away from the dividing roller 2 at the same time, which is conducive to the dispersion of the tobacco sheets 200 piece by piece.

[0056] like Figure 2 As shown, the anti-tipping baffle 6 has a proximity switch 61 at its lower end on the side away from the conveyor belt 1. The proximity switch 61 can count the number of smoke sheets 200 falling onto the sliding support.

[0057] like Figure 1 As shown, conveyor belts are also provided on both sides of conveyor belts 8, and cameras 81 facing the smoke block 100 are mounted on the conveyor belts 8. The cameras 81 can capture and record data of the smoke block 100.

[0058] like Figure 1 As shown, this device also includes a base support 9, on which the conveyor belt 1, the shaft and motor of the splitting roller 2, the shaft and motor of the dispersant 3, the anti-tipping baffle 6, the discharge chute 7, and the conveying chute 8 can be installed. Of course, the base support 9 can also be used to install the sliding support 4 and transition plate 5, which are different from those in some of the embodiments described above. In the figure, because the dispersed tobacco sheets 200 in the discharge chute 7 need to be fed into the rehumidification equipment from the top, the overall height of the base support 9 is relatively high.

[0059] This utility model's flexible loose feeding device for tobacco blocks, by placing the dividing roller 2 under the tobacco sheet 200 and embedding the insert 21 into the bottom of the tobacco sheet 200, allows the dividing roller 2 and the insert 21 to directly act on the tobacco sheet 200, smoothly completing the process of separating a single tobacco sheet 200 from the tobacco block 100 without relying on the elasticity of a spring to make the dividing roller 2 and the tobacco sheet 200 collide, resulting in good separation effect; the use of a tobacco fork-type disperser 3 in conjunction with a sliding bracket 4 to disperse the tobacco block 200 can disperse the tobacco sheet 200 without damaging the structure of the tobacco, preventing breakage; the application of the transition plate 5 and the anti-tipping baffle 6 makes the process of separating the tobacco sheet 200 one by one smoother; the application of the proximity switch 61 and the camera 81 effectively records the data of the tobacco block 100 and the tobacco sheet 200.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A flexible loose feeding device for smoke blocks, characterized in that: The assembly includes a conveyor belt (1) and a slitting roller (2). The slitting roller (2) is located at the end of the conveyor belt (1). The conveyor belt (1) rotates in the same direction as the slitting roller (2). The outer wall of the slitting roller (2) is provided with an insert (21). The insert (21) rotates with the slitting roller (2). The conveyor belt (1) is used to transport tobacco sheets to the upper end of the slitting roller (2). The insert (21) is used to embed into the bottom end face of a single piece of tobacco sheet at the upper end of the slitting roller (2). The slitting roller (2) and the insert (21) are used to accelerate the embedded single piece of tobacco sheet away from the slitting roller (2).

2. The flexible loose feeding device for smoke blocks according to claim 1, characterized in that: The conveyor belt (1) is inclined upwards in the conveying direction.

3. The flexible loose feeding device for smoke blocks according to claim 1, characterized in that: The end of the insert (21) away from the dividing roller (2) is set as an acute angle side, the acute angle side is parallel to the axis of the dividing roller (2), and the included angle between the faces on both sides of the acute angle side of the insert (21) is set as an acute angle.

4. The flexible loose feeding device for smoke blocks according to claim 3, characterized in that: The insert (21) has a tangent surface on one side of the acute angle edge that is tangent to the outer wall of the segment roller (2). The tangent surface faces the conveyor belt (1) when the insert (21) rotates. Ribs (22) are provided on the tangent surface at the acute angle edge.

5. The flexible loose feeding device for smoke blocks according to claim 1, characterized in that: The outer wall of the slitting roller (2) is also provided with roller teeth (23) to increase the friction when the slitting roller (2) contacts the tobacco sheet.

6. The flexible loose feeding device for smoke blocks according to any one of claims 1-5, characterized in that: It also includes a sliding support (4), on which is provided an arc-shaped slide bar (41) with a gradually decreasing slope. The arc-shaped slide bar (41) is used to receive the tobacco sheet that is sent away from the splitting roller (2) and to make the tobacco sheet slide from the inclined side to a horizontal side.

7. The flexible loose feeding device for smoke blocks according to claim 6, characterized in that: It also includes a scatterer (3), which is located at the end of the sliding support (4). The scatterer (3) is a rotatable smoke scattering fork. The rotating shafts of the split roller (2) and the smoke scattering fork are parallel. The radial fork (31) on the smoke scattering fork is staggered with the arc-shaped slide bar (41).

8. The flexible loose feeding device for smoke blocks according to claim 7, characterized in that: The sliding support (4) includes a support baffle (42), and the two ends of the support baffle (42) are rotatably connected to the rotating shaft of the split roller (2) and the rotating shaft of the smoke dispersing fork, respectively.

9. The flexible loose feeding device for smoke blocks according to any one of claims 1-5, characterized in that: A transition plate (5) is provided between the conveyor belt (1) and the slitting roller (2), and the transition plate (5) is provided with a clearance groove to avoid the insert (21).

10. The flexible loose feeding device for smoke blocks according to any one of claims 1-5, characterized in that: The upper side of the slitting roller (2) is also provided with an anti-tipping baffle (6), which is used to abut against the front side of the upper end of the tobacco sheet.

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