Tobacco shred weighing and unqualified product removing and recycling system

Abstract

A tobacco shred weighing and unqualified product removing and recycling system comprises a bottom plate, a vibration disc, a weighing module, a weighing tray, a tray lifting and overturning mechanism, a tobacco filling feeding hopper, a recycling hopper, a linear module and a tobacco shred recycling bin. The vibrating disc is mounted at the right rear part of the upper surface of the bottom plate; the weighing module is installed on the upper surface of the bottom plate and located on the front side of the vibration disc. The weighing tray is mounted on the tray lifting and overturning mechanism; the tray lifting and overturning mechanism is mounted on a sliding seat of the linear module; the cigarette filling feed hopper is mounted on the cigarette filling module; the recycling hopper is mounted on the bottom plate; the weighing module, the recycling hopper and the cigarette filling feeding hopper are located on the same straight line. The linear module is installed on the upper surface of the bottom plate in the left-right direction. The tobacco shred recycling bin is installed at the bottom of the bottom plate. According to the tobacco shred weighing device, tobacco shred weighing automation can be achieved, the weighing efficiency is high, tobacco shred unqualified batches can be removed and recycled, and it is guaranteed that the tobacco shred weighing precision is high, and the labor intensity is small.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette experimental equipment, and specifically, it relates to a tobacco weighing and unqualified rejection and recycling system. Background Art

[0002] In the process of cigarette production, on the premise of ensuring the safety of tobacco products, the satisfaction and comfort of smokers need to be considered. Research shows that the internal quality of cigarettes, such as the ingredient ratio of tobacco products, the filling density of tobacco shreds, and the filling uniformity, all have an impact on the aroma quality and the release amount of harmful components in the smoke. Therefore, laboratory personnel in cigarette enterprises will change the ingredient ratio of tobacco products to develop new formula tobacco products in order to improve the internal quality of cigarettes. When developing new formula tobacco products, it is necessary to prepare cigarettes with the formulated formula tobacco shreds for smoking aroma testing. However, since they are test samples, the amount of formula tobacco shreds is small and it is impossible to prepare formula cigarettes on the cigarette production line. Currently, in order to obtain formula cigarettes more conveniently, laboratory personnel will use some tobacco fillers on the market to fill tobacco into cigarette empty tubes.

[0003] Among them, the preparation and testing of formula cigarettes have high requirements for the weight accuracy of tobacco shreds. Therefore, it is necessary to accurately weigh the tobacco shreds. Currently, most laboratory personnel weigh the tobacco shreds manually, which has low efficiency, poor accuracy, and high labor intensity. There are also automated devices used for feeding and weighing tobacco shreds. However, in automated weighing, there may be a situation where the weight of the tobacco shreds is overweight and unqualified, and the existing automated devices lack a design for handling this situation.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the Invention

[0005] The purpose of the utility model is to address the deficiencies of the prior art, and thus provide a tobacco weighing and unqualified rejection and recycling system. The utility model can achieve automated tobacco weighing, with high weighing efficiency, can reject and recycle unqualified batches of tobacco weighing, ensure high weighing accuracy of tobacco shreds, and low labor intensity.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a tobacco weighing and unqualified rejection and recycling system, including a bottom plate, a vibrating disk, a weighing module, a weighing tray, a tray lifting and flipping mechanism, a tobacco filling hopper installed on the tobacco filling module, a recycling hopper, a linear module, and a tobacco shred recycling bin;

[0007] The vibrating disk is installed at the upper right rear part of the upper surface of the bottom plate and is used for orderly conveying tobacco shreds to the weighing tray;

[0008] The weighing module is installed on the upper surface of the bottom plate and is located in front of the vibrating disk, and is used for weighing tobacco shreds;

[0009] The weighing tray is installed on the tray lifting and flipping mechanism and is used to carry and transfer cut tobacco;

[0010] The tray lifting and flipping mechanism is installed on the sliding seat of the linear module and is used to lift, lower or flip the weighing tray;

[0011] The cut tobacco filling hopper is used to receive the cut tobacco with qualified weight weighed by the weighing tray and enable the cut tobacco to enter the cut tobacco filling module;

[0012] The recycling hopper is installed on the bottom plate and is used to receive the cut tobacco with unqualified weight weighed by the weighing tray;

[0013] The weighing module, the recycling hopper and the cut tobacco filling hopper are located on the same straight line;

[0014] The linear module is installed on the upper surface of the bottom plate in the left - right direction and is located in front of the weighing module. It is used to drive the tray lifting and flipping mechanism to move left and right, so that the tray lifting and flipping mechanism drives the weighing tray to move between the weighing module and the cut tobacco filling hopper and between the weighing module and the recycling hopper;

[0015] The cut tobacco recycling bin is installed at the bottom of the bottom plate and corresponds to the recycling hopper up and down, and is used to receive the cut tobacco falling from the recycling hopper.

[0016] Based on the above, the weighing module, the recycling hopper and the cut tobacco filling hopper are arranged at intervals in sequence from right to left.

[0017] Based on the above, the tray lifting and flipping mechanism includes a slide cylinder and a swing cylinder. The slide cylinder is vertically arranged. The bottom of the cylinder body of the slide cylinder is fixedly installed on the sliding seat of the linear module. The top of the slide of the slide cylinder is fixedly installed with a lifting frame. The swing cylinder is fixedly installed on the lifting frame. The output shaft of the swing cylinder is located in the middle of its rear side and the center line is horizontally arranged in the front - rear direction. The rear end of the output shaft of the swing cylinder is fixedly installed with a U - shaped flipping frame located above the weighing module. The weighing tray is installed on the U - shaped flipping frame.

[0018] Based on the above, the middle part of the weighing tray is a concave disk body. Both the left side and the right side of the weighing tray are integrally formed with vertical support plates that bend downward. The lower side of the vertical support plate is lower than the bottom of the disk body.

[0019] Based on the above, the U - shaped flipping frame is horizontally placed at the bottom of the weighing tray and is located between the two vertical support plates. The disk body is located in the middle U - shaped groove of the U - shaped flipping frame. At least two positioning pins are installed on the upper part of the U - shaped flipping frame. A number of positioning holes corresponding to each positioning pin are opened on the weighing tray. The upper side parts of the positioning pins are correspondingly inserted into the corresponding positioning holes. A retaining block for preventing the weighing tray from detaching is detachably installed at the upper end of the positioning pin. The size of the retaining block is larger than the size of the positioning hole.

[0020] Based on the above, the recycling hopper is a square hopper that is transparent from top to bottom. The lower end of the recycling hopper is fixedly installed on the bottom plate, and a recycling hole is opened on the bottom plate corresponding to the lower end of the recycling hopper.

[0021] Based on the above, the tobacco filling hopper is a trapezoidal hopper that is large at the top and small at the bottom and is open on the upper side, lower side, and right side.

[0022] Based on the above, the linear module is a ball screw type linear module mainly composed of a stepper motor, a coupling, a lead screw, a sliding seat, and a linear guide rail.

[0023] Based on the above, the cut tobacco recycling bin is a drawer structure that is open on the upper side and is slidably installed at the bottom of the bottom plate in the left-right direction. A handle is provided on the outer side of the left side plate of the cut tobacco recycling bin. Under normal circumstances, the cut tobacco recycling bin is in a closed state, and the right side of the cut tobacco recycling bin is located directly below the recycling hole.

[0024] Based on the above, a blanking hole is opened at the left side of the bottom plate at the tobacco filling position where the tobacco filling module is docked with the cigarette empty tube, for collecting the cut tobacco that falls during tobacco filling.

[0025] The utility model has substantial features and progress compared with the prior art. Specifically, the utility model designs a recycling hopper and a cut tobacco recycling bin. The weighing tray is placed on the weighing module to receive the cut tobacco conveyed from the vibrating disc and weigh it. When the weight of the cut tobacco is qualified, the weighing tray is moved from the weighing module to the tobacco filling hopper through the linear module, the sliding table cylinder, the swing cylinder, and the U-shaped flipping frame. The swing cylinder acts and drives the weighing tray to flip a certain angle through the U-shaped flipping frame, and the cut tobacco in the weighing tray is poured into the tobacco filling module through the tobacco filling hopper. If the weight of the cut tobacco is overweight and the weighing is unqualified, the weighing tray is moved from the weighing module to the recycling hopper through the linear module, the sliding table cylinder, the swing cylinder, and the U-shaped flipping frame. The swing cylinder acts and drives the weighing tray to flip a certain angle through the U-shaped flipping frame, and the cut tobacco in the weighing tray is poured into the cut tobacco recycling bin through the recycling hopper, eliminating the unqualified cut tobacco in terms of weighing and recycling it, ensuring that the weight of the cut tobacco supplied to the tobacco filling module meets the preparation and testing requirements of the formulated cigarettes. The whole weighing process can be automated, with high efficiency. The batches of cut tobacco with unqualified weighing can be eliminated and recycled, ensuring high weighing accuracy of the cut tobacco and low labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the axonometric view of the utility model Figure 1 .

[0027] Figure 2 is the front view of the utility model.

[0028] Figure 3 is the axonometric view of the utility model Figure 2 .

[0029] Figure 4 is the top view of the present utility model.

[0030] Figure 5 is the axonometric view of the present utility model Figure 3 , removing the weighing tray.

[0031] In the figure: 1. bottom plate; 2. vibrating bowl; 3. weighing module; 4. weighing tray; 5. cigarette filling module; 6. cigarette filling hopper; 7. recovery hopper; 8. cut tobacco recovery bin; 9. slide table cylinder; 10. swing cylinder; 11. lifting frame; 12. U-shaped turning frame; 13. positioning pin; 14. stepping motor; 15. coupling; 16. lead screw; 17. slide block; 18. linear guide rail; 19. handle; 20. blanking hole. Specific embodiments

[0032] The technical solution of the present utility model will be further described in detail below through specific embodiments.

[0033] Embodiment 1

[0034] As Figures 1 - 5 shown, the cut tobacco weighing and unqualified rejection and recovery system includes a bottom plate 1, a vibrating bowl 2, a weighing module 3, a weighing tray 4, a tray lifting and turning mechanism, a cigarette filling hopper 6 installed on a cigarette filling module 5, a recovery hopper 7, a linear module, and a cut tobacco recovery bin 8;

[0035] The vibrating bowl 2 is installed on the rear right part of the upper surface of the bottom plate 1 and is used for orderly conveying cut tobacco to the weighing tray 4;

[0036] The weighing module 3 is installed on the upper surface of the bottom plate 1 and is located on the front side of the vibrating bowl 2 and is used for weighing cut tobacco;

[0037] The weighing tray 4 is installed on the tray lifting and turning mechanism and is used for carrying and transferring cut tobacco;

[0038] The tray lifting and turning mechanism is installed on the slide block 17 of the linear module and is used for lifting, lowering or turning the weighing tray 4;

[0039] The cigarette filling hopper 6 is used for receiving the cut tobacco with qualified weight weighed by the weighing tray 4 and enabling the cut tobacco to enter the cigarette filling module 5;

[0040] The recovery hopper 7 is installed on the bottom plate 1 and is used for receiving the cut tobacco with unqualified weight weighed by the weighing tray 4;

[0041] The weighing module 3, the recovery hopper 7 and the cigarette filling hopper 6 are located on the same straight line;

[0042] The linear module is installed on the upper surface of the bottom plate 1 in the left-right direction and is located on the front side of the weighing module 3, and is used to drive the tray lifting and flipping mechanism to move left and right, so that the tray lifting and flipping mechanism drives the weighing tray 4 to move between the weighing module 3 and the tobacco filling hopper 6 and between the weighing module 3 and the recycling hopper 7;

[0043] The tobacco shred recycling bin 8 is installed at the bottom of the bottom plate 1 and corresponds to the recycling hopper 7 up and down, and is used to receive the tobacco shreds falling from the recycling hopper 7.

[0044] In this embodiment, the tobacco filling module 5 is installed on the left side of the upper surface of the bottom plate 1 and is used to fill the weighed tobacco shreds into the cigarette empty tubes.

[0045] In this embodiment, the weighing module 3, the recycling hopper 7 and the tobacco filling hopper 6 are arranged at intervals in sequence from right to left. In other embodiments, the recycling hopper 7 can also be arranged on the left side of the tobacco filling hopper 6, that is, the weighing module 3, the tobacco filling hopper 6 and the recycling hopper 7 are arranged at intervals in sequence from right to left; the recycling hopper 7 can also be arranged on the right side of the weighing module 3, that is, the recycling hopper 7, the weighing module 3 and the tobacco filling hopper 6 are arranged at intervals in sequence from right to left.

[0046] In this embodiment, the tray lifting and flipping mechanism includes a slide cylinder 9 and a swing cylinder 10. The slide cylinder 9 is arranged vertically. The bottom of the cylinder body of the slide cylinder 9 is fixedly installed on the slide seat 17 of the linear module. The top of the slide of the slide cylinder 9 is fixedly installed with a lifting frame 11. The swing cylinder 10 is fixedly installed on the lifting frame 11. The output shaft of the swing cylinder 10 is located in the middle of its rear side and the center line is horizontally arranged in the front-rear direction. The rear end of the output shaft of the swing cylinder 10 is fixedly installed with a U-shaped flipping frame 12 located above the weighing module 3. The weighing tray 4 is installed on the U-shaped flipping frame 12.

[0047] In this embodiment, the middle part of the weighing tray 4 is a concave disk body. The left side and the right side of the weighing tray 4 are integrally formed with vertical support plates that are bent downward, and the lower side edges of the vertical support plates are lower than the bottom of the disk body.

[0048] In this embodiment, the U-shaped turnover rack 12 is horizontally placed at the bottom of the weighing tray 4 and is located between two vertical support plates. The tray body is located in the middle U-shaped groove of the U-shaped turnover rack 12. At least two positioning pins 13 are installed on the upper part of the U-shaped turnover rack 12. A number of positioning holes corresponding to the respective positioning pins 13 are formed on the weighing tray 4. The upper side parts of the positioning pins 13 are correspondingly inserted into the corresponding positioning holes. A anti-disengagement stop block (not shown in the figure) for preventing the weighing tray 4 from disengaging is detachably installed at the upper end of the positioning pin 13. The size of the anti-disengagement stop block is larger than the size of the positioning hole. Through the arrangement of the positioning pins 13, the movable connection between the weighing tray 4 and the U-shaped turnover rack 12 can be ensured, so that the U-shaped turnover rack 12 can move up and down relative to the weighing tray 4. When weighing, the weighing tray 4 is placed on the weighing module 3, and the U-shaped turnover rack 12 moves downward to separate from the weighing tray 4. Then the weighing tray 4 can be completely supported on the weighing module 3 through the two vertical support plates, and the weight of the weighing tray 4 acts entirely on the weighing module 3. After weighing is completed, the U-shaped turnover rack 12 moves upward to lift the weighing tray 4. When the weighing tray 4 is turned over, due to the action of the positioning pins 13 and the anti-disengagement stop block, the weighing tray 4 can be turned over together with the U-shaped turnover rack 12, ensuring that the weighing tray 4 can always be connected to the U-shaped turnover rack 12.

[0049] In this embodiment, the recycling hopper 7 is a square hopper that is transparent from top to bottom. The lower end of the recycling hopper 7 is fixedly installed on the bottom plate 1, and a recycling hole is formed on the bottom plate 1 corresponding to the lower end of the recycling hopper 7.

[0050] In this embodiment, the tobacco filling hopper 6 is a trapezoidal hopper that is large at the top and small at the bottom and is open on the upper side, lower side, and right side.

[0051] In this embodiment, the linear module is a ball screw type linear module mainly composed of a stepper motor 14, a coupling 15, a lead screw 16, a slide block 17, and a linear guide rail 18. In other embodiments, the ball screw type linear module can be replaced with a synchronous belt type linear module or a linear motor type linear module.

[0052] In this embodiment, the tobacco shred recycling bin 8 is a drawer structure that is open on the upper side and is slidably installed at the bottom of the bottom plate 1 in the left-right direction. A handle 19 is provided on the outer side of the left side plate of the tobacco shred recycling bin 8. Under normal circumstances, the tobacco shred recycling bin 8 is in a closed state, and the right side part of the tobacco shred recycling bin 8 is located directly below the recycling hole. When the tobacco shreds in the tobacco shred recycling bin 8 are excessive, the tobacco shred recycling bin 8 is pulled to the left through the handle 19, the tobacco shreds in the tobacco shred recycling bin 8 are cleared out, and then the tobacco shred recycling bin 8 is reset to continue receiving the tobacco shreds recycled through the recycling hopper 7 due to unqualified weighing.

[0053] During the operation of this embodiment, the initial weighing tray 4 is placed on the weighing module 3 to receive the cut tobacco conveyed from the vibrating disk 2 and conduct weighing. At this time, the piston rod of the sliding table cylinder 9 is in a contracted state, and the U-shaped turning frame 12 is disengaged from the weighing tray 4. The weighing tray 4 is completely supported on the weighing module 3 by two vertical support plates. When the weight of the cut tobacco reaches the specified value, the vibrating disk 2 stops feeding. The piston rod of the sliding table cylinder 9 extends, and the sliding table of the sliding table cylinder 9 drives the swing cylinder 10 and the U-shaped turning frame 12 to move up a certain height through the lifting frame 11, so that the U-shaped turning frame 12 directly lifts the weighing tray 4. Then the linear module works, and the slide block 17 of the linear module drives the sliding table cylinder 9 to move left to the tobacco filling hopper 6. The swing cylinder 10 works to drive the U-shaped turning frame 12 to turn a certain angle, so that the weighing tray 4 turns to pour the cut tobacco into the tobacco filling hopper 6. Then the cut tobacco enters the tobacco filling module 5 through the tobacco filling hopper 6. The tobacco filling module 5 works to fill the cut tobacco into the cigarette empty tube. At the same time, the swing cylinder 10 resets, the U-shaped turning frame 12 drives the empty weighing tray 4 to turn and reset to the horizontal, and the slide block 17 of the linear module drives the sliding table cylinder 9 to reset to the right, completing one cut tobacco weighing operation. The whole weighing process is automated, with high efficiency and low labor intensity. If the weight of the cut tobacco is overweight and the weighing is unqualified, the vibrating disk 2 stops feeding. The piston rod of the sliding table cylinder 9 extends, and the sliding table of the sliding table cylinder 9 drives the swing cylinder 10 and the U-shaped turning frame 12 to move up a certain height through the lifting frame 11, so that the U-shaped turning frame 12 directly lifts the weighing tray 4. Then the linear module works, and the slide block 17 of the linear module drives the sliding table cylinder 9 to move left to the recovery hopper 7. The swing cylinder 10 works to drive the U-shaped turning frame 12 to turn a certain angle, so that the weighing tray 4 turns to pour the cut tobacco into the recovery hopper 7. Then the cut tobacco enters the cut tobacco recovery bin 8 through the recovery hopper 7, removing the cut tobacco with unqualified weighing to ensure that the weight of the cut tobacco supplied to the tobacco filling module 5 meets the requirements for the preparation and testing of the formulated cigarettes.

[0054] Embodiment 2

[0055] As Figure 1 、 4 shown in and 5, on the basis of Embodiment 1, in this embodiment, a blanking hole 20 is provided at the left side of the bottom plate 1 at the tobacco filling position where the tobacco filling module 5 is docked with the cigarette empty tube for collecting the cut tobacco that drops during tobacco filling.

[0056] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: still can modify the specific implementation manners of the present invention or perform equivalent replacements on some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A cut tobacco weighing and unqualified rejection and recycling system, characterized in that: It includes a bottom plate, a vibrating disk, a weighing module, a weighing tray, a tray lifting and flipping mechanism, a tobacco filling hopper installed on the tobacco filling module, a recovery hopper, a linear module, and a tobacco shred recovery bin; The vibrating disk is installed at the right rear part of the upper surface of the bottom plate and is used to orderly convey tobacco shreds to the weighing tray; The weighing module is installed on the upper surface of the bottom plate and is located on the front side of the vibrating disk and is used to weigh tobacco shreds; The weighing tray is installed on the tray lifting and flipping mechanism and is used to carry and transfer tobacco shreds; The tray lifting and flipping mechanism is installed on the slide of the linear module and is used to lift, lower, or flip the weighing tray; The tobacco filling hopper is used to receive the tobacco shreds with qualified weight weighed by the weighing tray and enable the tobacco shreds to enter the tobacco filling module; The recovery hopper is installed on the bottom plate and is used to receive the tobacco shreds with unqualified weight weighed by the weighing tray; The weighing module, the recovery hopper, and the tobacco filling hopper are located on the same straight line; The linear module is installed along the left - right direction on the upper surface of the bottom plate and is located on the front side of the weighing module and is used to drive the tray lifting and flipping mechanism to move left and right, so that the tray lifting and flipping mechanism drives the weighing tray to move between the weighing module and the tobacco filling hopper and between the weighing module and the recovery hopper; The tobacco shred recovery bin is installed at the bottom of the bottom plate and corresponds to the recovery hopper up and down and is used to receive the tobacco shreds falling from the recovery hopper.

2. The cut tobacco weighing and unqualified rejection and recycling system according to claim 1, wherein: The weighing module, the recovery hopper, and the tobacco filling hopper are arranged at intervals in sequence from right to left.

3. The cut tobacco weighing and unqualified rejection and recycling system according to claim 1, characterized in that: The tray lifting and flipping mechanism includes a slide table cylinder and a swing cylinder. The slide table cylinder is arranged vertically. The bottom of the cylinder body of the slide table cylinder is fixedly installed on the slide of the linear module. The top of the slide of the slide table cylinder is fixedly installed with a lifting frame. The swing cylinder is fixedly installed on the lifting frame. The output shaft of the swing cylinder is located in the middle at its rear side and the center line is horizontally arranged along the front - rear direction. The rear end of the output shaft of the swing cylinder is fixedly installed with a U - shaped flipping frame located above the weighing module. The weighing tray is installed on the U - shaped flipping frame.

4. The cut tobacco weighing and unqualified rejection and recycling system according to claim 3, characterized in that: The middle part of the weighing tray is a concave disk body. Vertical support plates that are bent downward are integrally formed on both the left side and the right side of the weighing tray. The lower side edges of the vertical support plates are lower than the bottom of the disk body.

5. The tobacco weighing and unqualified rejection and recycling system according to claim 4, characterized in that: The U - shaped flipping frame is horizontally placed at the bottom of the weighing tray and is located between the two vertical support plates. The disk body is located in the middle U - shaped groove of the U - shaped flipping frame. At least two positioning pins are installed on the upper part of the U - shaped flipping frame. A number of positioning holes corresponding to each positioning pin are opened on the weighing tray. The upper side parts of the positioning pins are correspondingly inserted into the corresponding positioning holes. A anti - detachment stop block for preventing the weighing tray from detaching is detachably installed at the upper end of the positioning pin. The size of the anti - detachment stop block is larger than the size of the positioning hole.

6. The tobacco weighing and unqualified rejection and recycling system according to claim 1, characterized in that: The recovery hopper is a square hopper that is transparent up and down. The lower end of the recovery hopper is fixedly installed on the bottom plate. A recovery hole is opened on the bottom plate corresponding to the lower end of the recovery hopper.

7. The tobacco weighing and non-conforming rejection and recycling system according to claim 1, characterized in that: The tobacco filling hopper is a trapezoidal hopper that is large at the top and small at the bottom and is open on the upper side, the lower side, and the right side.

8. The tobacco weighing, unqualified rejection and recycling system according to claim 1, characterized in that: The linear module is a ball screw type linear module mainly composed of a stepping motor, a coupling, a lead screw, a slide, and a linear guide rail.

9. The cut tobacco weighing and unqualified rejection and recycling system according to claim 6, characterized in that: The shredded tobacco recycling bin is a drawer structure with an open upper side and is slidably installed at the bottom of the bottom plate in the left-right direction. A handle is provided on the outer side of the left side plate of the shredded tobacco recycling bin. Under normal circumstances, the shredded tobacco recycling bin is in a closed state, and the right side of the shredded tobacco recycling bin is located directly below the recycling hole.

10. The cut tobacco weighing and unqualified rejection and recycling system according to any one of claims 1-9, characterized in that: A blanking hole is provided at the left side of the bottom plate at the tobacco filling position where the tobacco filling module is docked with the cigarette empty cylinder, for collecting the shredded tobacco that falls during tobacco filling.

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