Shredded tobacco pre-compressor

Abstract

This application relates to a shredded tobacco sheet pre-compressor, comprising a base, a conveying mechanism, a material bin mechanism, and a weighing mechanism. The conveying mechanism is mounted on the base and includes a first conveyor belt and a load-bearing bracket. The first conveyor belt is used to convey cartons to the load-bearing bracket. The material bin mechanism is mounted on the base and located on one side of the load-bearing bracket in the height direction. The material bin mechanism includes a feeding sleeve with an inlet and an outlet, the outlet facing the load-bearing bracket. The weighing mechanism is mounted on the base and is used to measure the total weight of the material bin mechanism, the load-bearing bracket, and the cartons located on the load-bearing bracket. The shredded tobacco sheet pre-compressor provided by this application can monitor the actual supply of shredded tobacco sheets in real time, reducing the problem of weight differences after compression caused by differences in volume and density of shredded tobacco sheets, thereby improving the weight consistency of the stack of shredded tobacco sheets in each carton and meeting the requirements of standardized packaging.

Description

Technical Field

[0001] This application relates to the field of tobacco processing technology, and in particular to a pre-compressor for shredded tobacco sheets. Background Technology

[0002] In the pre-compression and packaging section of tobacco processing enterprises, the tobacco flakes need to be compressed into stacks of tobacco flakes of a certain size and shape to facilitate the packing, packaging, and subsequent storage and aging of the tobacco flakes.

[0003] To standardize the packaging of shredded tobacco leaves, it is necessary to control the weight of shredded tobacco leaves in each carton as consistently as possible. Related technical solutions employ controlling the feeding time of shredded tobacco leaves to achieve a quantitative supply. However, due to differences in volume and density among shredded tobacco leaves, the weight of the stack of shredded tobacco leaves in each carton varies after pre-compression and packaging, affecting the degree of standardization in shredded tobacco leaf packaging. Utility Model Content

[0004] Therefore, it is necessary to provide a highly standardized pre-compressor for shredded tobacco sheets to address the aforementioned technical problems.

[0005] This application provides a shredded tobacco sheet pre-compressor, including a base, a conveying mechanism, a hopper mechanism, and a weighing mechanism. The conveying mechanism is installed on the base and includes a first conveyor belt and a load-bearing bracket. The first conveyor belt is used to convey cartons to the load-bearing bracket. The hopper mechanism is installed on the base and located on one side of the load-bearing bracket in the height direction. The hopper mechanism includes a feeding sleeve with an inlet and an outlet, the outlet facing the load-bearing bracket. The weighing mechanism is installed on the base and is used to measure the total weight of the hopper mechanism, the load-bearing bracket, and the cartons located on the load-bearing bracket.

[0006] In one embodiment, the load-bearing bracket is connected to the material box mechanism; the weighing mechanism includes a first driving member, which is connected to the load-bearing bracket and is used to drive the load-bearing bracket and the material box mechanism to move synchronously in the height direction.

[0007] In one embodiment, the hopper mechanism further includes a hopper support and a second driving member. The second driving member is mounted on the hopper support or the conveying sleeve. The hopper support is connected to the load-bearing support, and the second driving member is connected to the conveying sleeve. The second driving member is used to drive the conveying sleeve to move relative to the load-bearing support in the height direction.

[0008] In one embodiment, the hopper mechanism further includes a meshing gear and a rack, the gear being connected to a second drive member, the rack extending in the height direction, one of the gear and rack being mounted on a hopper support, and the other being mounted on a conveying sleeve.

[0009] In one embodiment, it further includes: a pre-compression mechanism mounted on the base, the pre-compression mechanism including a pressure head and a third drive member connected to each other, the pressure head and the load-bearing bracket being located on different sides of the conveying sleeve in the height direction; the third drive member is used to drive the pressure head to move relative to the load-bearing bracket in the height direction.

[0010] In one embodiment, the shredded tobacco pre-compressor has a pre-compressed state in which at least a portion of the press head passes through the conveying sleeve and extends into a carton located on a load-bearing support.

[0011] In one embodiment, the material box mechanism further includes a material hopper and a material plate, the material hopper and the load-bearing bracket are located on different sides of the material conveying sleeve in the height direction, and the material hopper is connected to the material conveying sleeve, and the material plate is movably connected to the material hopper and located inside the material hopper.

[0012] In one embodiment, it further includes: a feeding mechanism mounted on the base, the feeding mechanism being located on one side of the conveying mechanism in the height direction, the feeding mechanism including a second conveyor belt, the second conveyor belt extending along the first direction and toward the feeding hopper, the second conveyor belt being used to convey shredded tobacco leaves, the first direction being intersected with the height direction.

[0013] In one embodiment, the fabric hopper has two openings connecting the inside and outside of the fabric hopper, one of which is connected to the feed inlet and the other is facing the second conveyor belt.

[0014] In one embodiment, the shredded tobacco pre-compressor has a feeding state in which at least a portion of the feeding sleeve extends into a cardboard box located on a load-bearing support.

[0015] The shredded tobacco sheet pre-compressor proposed in this application measures the total weight of the material bin mechanism, load-bearing bracket, and carton as a whole through a weighing mechanism. This allows shredded tobacco sheets that have not yet been compressed and are piled up at the material bin mechanism due to their excessive volume to be weighed together with the shredded tobacco sheets inside the carton. Real-time monitoring of the actual supply of shredded tobacco sheets reduces the problem of weight differences after compression caused by variations in volume and density, thereby improving the weight consistency of the shredded tobacco sheet stacks in each carton and meeting standardized packaging requirements. Secondly, based on real-time weighing data, the feeding speed and start / stop timing can be dynamically adjusted to achieve on-demand feeding, reducing rework costs caused by low weight standardization after compression, and thus improving production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A front view structural schematic diagram of a shredded tobacco pre-compressor is provided;

[0018] Figure 2 This is a side view of a pre-compressed tobacco sheet machine according to one embodiment;

[0019] Figure 3 This is a front view of a pre-compressed tobacco sheet machine according to one embodiment, with the base concealed.

[0020] Figure 4 This is a side view of a pre-compressed tobacco sheet machine according to one embodiment, with the base concealed.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10. Shredded tobacco pre-compressor;

[0023] 100. Base;

[0024] 200. Conveying mechanism; 210. First conveyor belt; 220. Load-bearing support; 230. Third conveyor belt;

[0025] 300. Material box mechanism; 310. Material conveying sleeve; 311. Material outlet; 320. Second drive component; 330. Material box support; 340. Material hopper;

[0026] 400. Weighing mechanism; 410. First driving component;

[0027] 500. Pre-compression mechanism; 510. Pressure head; 520. Third drive component;

[0028] 600. Feeding mechanism; 610. Second conveyor belt;

[0029] x, first direction; z, height direction. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] The pre-compressor for shredded tobacco provided in this application will now be described with reference to the accompanying drawings. It should be noted that the x-direction in the drawings is the first direction, and the z-direction is the height direction. In the drawings, for ease of drawing, the dimensions are not necessarily proportional to the actual dimensions.

[0037] Please see Figure 1 and Figure 2 , Figure 1 A front view structural schematic diagram of a shredded tobacco pre-compressor is provided; Figure 2 This is a side view of a pre-compressor for shredded tobacco sheets according to one embodiment.

[0038] like Figure 1 and Figure 2 As shown, an embodiment of this application provides a shredded tobacco sheet pre-compressor 10, including a base 100, a conveying mechanism 200, a material bin mechanism 300, and a weighing mechanism 400. The conveying mechanism 200 is mounted on the base 100 and includes a first conveyor belt 210 and a load-bearing bracket 220. The first conveyor belt 210 is used to convey cartons (not shown) to the load-bearing bracket 220. The material bin mechanism 300 is mounted on the base 100 and located on one side of the load-bearing bracket 220 in the height direction (z direction in the figure). The material bin mechanism 300 includes a feeding sleeve 310, which includes an inlet (not shown) and an outlet 311, with the outlet 311 facing the load-bearing bracket 220. The weighing mechanism 400 is mounted on the base 100 and is used to measure the total weight of the material bin mechanism 300, the load-bearing bracket 220, and the cartons located on the load-bearing bracket 220.

[0039] Optionally, the first conveyor belt 210 is a roller belt conveyor belt used to transport empty cartons to the load-bearing bracket 220. The inlet and outlet 311 are located on both sides of the conveying sleeve 310 in the height direction z, and the conveying sleeve 310 is located above the load-bearing bracket 220. When the empty cartons are transported to the load-bearing bracket 220, the shredded tobacco can enter the conveying sleeve 310 from the inlet above the conveying sleeve 310 and enter the cartons located at the load-bearing bracket 220 from the outlet 311 below the conveying sleeve 310.

[0040] It is easy to understand that the weights of the empty cardboard box, the load-bearing bracket 220, and the conveying sleeve 310 are all known and stable. Before the pre-compression of the shredded tobacco begins, the weighing mechanism 400 can first weigh the total weight of the empty cardboard box, the load-bearing bracket 220, and the material box mechanism 300 as the starting weight. Then, when the shredded tobacco is fed, the weighing mechanism 400 monitors in real time the total weight of the material box mechanism 300, the load-bearing bracket 220, and the cardboard box located on the load-bearing bracket 220. The difference between this weight and the starting weight is the sum of the weights of the shredded tobacco leaves in the cardboard box and the shredded tobacco leaves in the conveying sleeve 310. When this weight reaches the preset weight, the feeding of shredded tobacco leaves can be paused, and the shredded tobacco leaves at the load-bearing bracket 220 can be compressed and packaged. After that, the packaged cardboard box is unloaded, and then the new empty cardboard box is transferred to the load-bearing bracket 220 via the first conveyor belt 210.

[0041] Optionally, the conveying mechanism 200 also includes a third conveyor belt 230, which is a roller belt conveyor belt. The third conveyor belt 230 and the first conveyor belt 210 are located on both sides of the load-bearing bracket 220. The compressed and packaged carton leaves the load-bearing bracket 220 via the third conveyor belt 230 and is transferred to the next process.

[0042] Optionally, the load-bearing bracket 220 is equipped with a position detection switch, which sends a signal to the weighing mechanism 400 after the empty carton reaches the designated position on the load-bearing bracket 220. The position detection switch can be one of the following: a contact induction switch, a photoelectric induction switch, or an electromagnetic induction switch.

[0043] The shredded tobacco pre-compressor 10 provided in this embodiment measures the total weight of the material bin mechanism 300, the load-bearing bracket 220, and the entire carton by using a weighing mechanism 400. This allows shredded tobacco that has not yet been compressed and is piled up at the material bin mechanism 300 due to its large volume to be weighed together with the shredded tobacco inside the carton. This enables real-time monitoring of the actual supply of shredded tobacco, reducing the problem of weight differences after compression caused by differences in volume and density of shredded tobacco, thereby improving the weight consistency of the shredded tobacco stacks in each carton and meeting standardized packaging requirements. Secondly, based on real-time weighing data, the feeding speed and feeding start / stop timing can be dynamically adjusted to achieve on-demand feeding, reducing rework costs caused by low weight standardization after compression, and thus improving production efficiency.

[0044] In some embodiments, the load-bearing bracket 220 is connected to the material box mechanism 300. The weighing mechanism 400 includes a first driving member 410, which is connected to the load-bearing bracket 220 and is used to drive the load-bearing bracket 220 and the material box mechanism 300 to move synchronously along the height direction z.

[0045] Optionally, the weighing mechanism 400 uses a hanging scale for weighing, and the first driving component 410 is a motor. When weighing is required, the first driving component 410 synchronously lifts the load-bearing bracket 220 and the material box mechanism 300 to begin weighing. After weighing is completed, the first driving component 410 can lower the load-bearing bracket 220 and the material box mechanism 300 back to their original height.

[0046] Optionally, a pressure-bearing seat (not shown) is provided below the load-bearing bracket 220 to withstand pressure. The pressure-bearing seat can be a highly rigid and structurally stable mechanism. It can be installed on the base 100 or directly on the ground where the shredded tobacco pre-compressor 10 is located. After weighing is completed, the first drive component 410 can lower the load-bearing bracket 220 and the material box mechanism 300 to their original height. At this time, the lower surface of the load-bearing bracket 220 abuts against the pressure-bearing seat and is supported by it. Then, the shredded tobacco pre-compressor 10 begins to compress the shredded tobacco.

[0047] The shredded tobacco pre-compressor 10 provided in this embodiment uses a first driving component 410 to drive the load-bearing bracket 220 and the material box mechanism 300 to move synchronously along the height direction z. This allows the weighing mechanism 400 to lift the load-bearing bracket 220 and the material box mechanism 300 during weighing and to lower them back to their original positions after weighing. By providing a pressure seat and ensuring that the load-bearing bracket 220 rests on the pressure seat after weighing, the stability of the load-bearing bracket 220 during the shredded tobacco compression stage is improved.

[0048] In some embodiments, the hopper mechanism 300 further includes a second drive member 320 and a hopper support 330. The second drive member 320 is mounted on the hopper support 330 or the conveying sleeve 310. The hopper support 330 is connected to the load-bearing support 220, and the second drive member 320 is connected to the conveying sleeve 310. The second drive member 320 is used to drive the conveying sleeve 310 to move relative to the load-bearing support 220 along the height direction z.

[0049] Optionally, the hopper mechanism 300 also includes a meshing gear (not shown) and a rack (not shown), the gear being connected to the second drive member 320, and the rack extending along the height direction z, one of the gear and the rack being mounted on the hopper bracket 330 and the other being mounted on the conveying sleeve 310.

[0050] Of course, in other embodiments, the material conveying sleeve 310 and the material box support 330 can also be connected by components such as ball screws and cylinder-slider to realize the mutual movement of the material conveying sleeve 310 and the material box support 330.

[0051] Optionally, the shredded tobacco pre-compressor 10 has a feeding mode, in which at least a portion of the feeding sleeve 310 extends into the cardboard box located on the support bracket 220. It is easily understood that before the shredded tobacco arrives, the second drive unit 320 drives the feeding sleeve 310 downwards until a portion of the feeding sleeve 310 extends into the cardboard box located on the support bracket 220, after which the shredded tobacco flows into the cardboard box through the feeding sleeve 310. After the shredded tobacco is compressed, the second drive unit 320 drives the feeding sleeve 310 upwards, separating the feeding sleeve 310 from the full cardboard box, facilitating the transfer of the full cardboard box to the next process.

[0052] The shredded tobacco pre-compressor 10 provided in this embodiment, by setting a second driving member 320, enables the conveying sleeve 310 to move up and down relative to the cardboard box on the load-bearing bracket 220. In the conveying state, at least part of the conveying sleeve 310 extends into the cardboard box located on the load-bearing bracket 220, so that the shredded tobacco will not fall out from the gap between the conveying sleeve 310 and the cardboard box when it is conveyed to the cardboard box, thereby reducing the waste of shredded tobacco.

[0053] Please see Figure 3 and Figure 4 , Figure 3 This is a front view of a pre-compressed tobacco sheet machine according to one embodiment, with the base concealed. Figure 4 This is a side view of a pre-compressed tobacco sheet machine according to one embodiment, with the base concealed.

[0054] In some embodiments, the shredded tobacco pre-compressor 10 further includes a pre-compressing mechanism 500, which includes a pressure head 510 and a third drive member 520 connected to each other. The pressure head 510 and the load-bearing bracket 220 are located on different sides of the conveying sleeve 310 in the height direction z. The third drive member 520 is used to drive the pressure head 510 to move relative to the load-bearing bracket 220 in the height direction z.

[0055] Optionally, the shredded tobacco pre-compressor 10 has a pre-compressed state in which at least part of the press head 510 passes through the conveying sleeve 310 and extends into the carton located on the load-bearing bracket 220.

[0056] Optionally, the material bin mechanism 300 further includes a material hopper 340 and a material plate (not shown). The material hopper 340 and the load-bearing bracket 220 are located on different sides of the conveying sleeve 310 in the height direction z, and the material hopper 340 is connected to the conveying sleeve 310. The material plate is movably connected to the material hopper 340 and is located inside the material hopper 340. In this embodiment, the example is that the material hopper 340 is located above the conveying sleeve 310.

[0057] Optionally, the material box mechanism 300 also includes a fourth drive member (not shown), which is connected to the material plate and is used to drive the material plate to swing left and right so that the incoming shredded tobacco leaves can fall evenly into the conveying sleeve 310 and the carton below.

[0058] Optionally, the shredded tobacco pre-press 10 also has a pressure holding state. In the pressure holding state, at least part of the press head 510 extends into the carton located on the load-bearing bracket 220. At the same time, the second drive member 320 drives the conveying sleeve 310 and the feeding hopper 340 to rise along the height direction z, so that the conveying sleeve 310 separates from the carton on the load-bearing bracket 220.

[0059] Optionally, a contact switch (not shown) is provided on the pressure head 510. The contact switch is connected to the third drive component 520. Triggering the contact switch indicates that the pressure head 510 has begun contact with the shredded tobacco. In the pre-compression state and before the contact switch is triggered, the pressure head 510 descends rapidly until the contact switch is triggered. Then, the pressure head 510 begins to descend slowly until it reaches a set depth (this depth can be adjusted according to actual needs). At this point, the shredded tobacco pre-compressor 10 switches to the pressure holding state. In the pressure holding state, the pressure head 510 remains in place for a certain period to compact the tobacco stack. This preset time can be adjusted according to actual needs. When the pressure holding state ends, the pressure head 510 first rises slowly until the contact switch is no longer triggered, then the pressure head 510 quickly rises back to its initial position.

[0060] The shredded tobacco pre-compressor 10 provided in this embodiment improves the compression efficiency of the shredded tobacco while reducing the probability of damage to the cardboard box by keeping at least a portion of the conveying sleeve 310 within the cardboard box on the load-bearing bracket 220 during the pre-compressing state. This is because when the shredded tobacco in the cardboard box expands horizontally due to the pressure of the pressure head 510 in the height direction z, it is limited by the conveying sleeve 310. By enabling the shredded tobacco pre-compressor 10 to have a pressure-holding state, the pressure of the pressure head 510 is not unloaded, reducing the rebound of the compressed tobacco stack. During the pressure-holding time, the second driving component 320 drives the conveying sleeve 310 and the feeding hopper 340 to rise in the height direction z, causing the conveying sleeve 310 to separate from the cardboard box on the load-bearing bracket 220.

[0061] In some embodiments, the shredded tobacco pre-compressor 10 further includes a feeding mechanism 600, which is mounted on the base 100 and located on the side of the conveying mechanism 200 in the height direction z. The feeding mechanism 600 includes a second conveyor belt 610, which extends along a first direction (x direction in the figure) and toward the feed hopper 340. The second conveyor belt 610 is used to convey shredded tobacco leaves, and the first direction x is arranged to intersect the height direction z.

[0062] Optionally, the feeding mechanism 600 and the conveying mechanism 200 are staggered, with the conveying mechanism 200 located on the first floor and the feeding mechanism 600 located on the second floor. The height difference allows the shredded tobacco leaves on the second floor to fall into the conveying sleeve 310 and the cardboard box below by gravity, and also provides space for the vertical movement of the conveying sleeve 310.

[0063] Optionally, the second conveyor belt 610 can be a roller belt conveyor belt.

[0064] Optionally, the feeding hopper 340 has two openings connecting the inside and outside of the feeding hopper 340. One opening is connected to the feed inlet, and the other opening faces the second conveyor belt 610. This allows the shredded tobacco leaves transferred from the second conveyor belt 610 to enter the feeding hopper 340 through one of the openings, be evenly distributed by the feeding plate, and then fall from the opening below the feeding hopper 340 into the conveying sleeve 310 and the cardboard box.

[0065] Optionally, the top of the fabric hopper 340 is also provided with an opening, and the pressure head 510 can pass through the opening above the fabric hopper 340 and enter the conveying sleeve 310 and the carton below when in the pre-pressing state.

[0066] Optionally, the first drive unit 410, the second drive unit 320, the third drive unit 520, and the fourth drive unit are all servo motors, completely eliminating the hydraulic system and thoroughly avoiding the potential risk of hydraulic oil leakage contaminating the smoke fragments. Compared to the hydraulic mode, the electric mode is simpler, more reliable, and more intelligent and straightforward in control, achieving advantages such as greater energy efficiency, environmental friendliness, cleanliness, and ease of control.

[0067] In summary, a complete cigarette sheet compression and packaging stage can include a carton feeding stage, a lifting and weighing stage, a cigarette sheet receiving stage, a load-bearing bracket 220 lowering stage, a pressure head 510 pressing stage, a pressure holding stage, a pressure head 510 retraction stage, and a carton unloading stage. Carton feeding stage: Empty cartons are conveyed to the load-bearing bracket 220 via the first conveyor belt 210, triggering the arrival detection switch at the load-bearing bracket 220. Lifting and weighing stage: The first drive unit 410 simultaneously lifts the load-bearing bracket 220, the empty cartons on the load-bearing bracket 220, and the material box mechanism 300, and begins weighing. Cigarette sheet receiving stage: The cigarette sheet pre-compressor 10 switches to conveying mode, with at least a portion of the conveying sleeve 310 extending into the cartons located on the load-bearing bracket 220. Simultaneously, the feeding mechanism 600 begins conveying cigarette sheets until the weight measured by the weighing mechanism 400 reaches a threshold. Lowering stage of the load-bearing bracket 220: The first drive unit 410 lowers the load-bearing bracket 220 and the material box mechanism 300 until the load-bearing bracket 220 abuts against the pressure seat. Pressing head 510 pressing stage: In the pre-pressing state and before the contact switch is triggered, the pressing head 510 descends rapidly until the contact switch on the pressing head 510 is triggered, at which point the pressing head 510 begins to press down slowly until it reaches the set depth. Holding stage: The pressing head 510 is held for a certain period of time to compact the tobacco stack, while the second drive unit 320 drives the conveying sleeve 310 and the feeding hopper 340 to rise along the height direction z, separating the conveying sleeve 310 from the carton on the load-bearing bracket 220. Removal stage of the pressing head 510: The pressing head 510 first rises slowly until the contact switch is no longer triggered, then the pressing head 510 quickly rises back to its initial position. Carton unloading stage: The compressed carton is transferred to the next process via the third conveyor belt 230.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A pre-compressor for shredded tobacco sheets, characterized in that, include: Base; A conveying mechanism is installed on the base. The conveying mechanism includes a first conveyor belt and a load-bearing bracket. The first conveyor belt is used to convey the carton to the load-bearing bracket. A material box mechanism is installed on the base and located on one side of the load-bearing bracket in the height direction. The material box mechanism includes a material conveying sleeve, which includes an inlet and an outlet, with the outlet facing the load-bearing bracket. A weighing mechanism is installed on the base, and the weighing mechanism is used to measure the total weight of the material box mechanism, the load-bearing bracket, and the carton located on the load-bearing bracket.

2. The pre-compressor for shredded tobacco according to claim 1, characterized in that, The load-bearing bracket is connected to the material box mechanism; The weighing mechanism includes a first driving component, which is connected to the load-bearing bracket. The first driving component is used to drive the load-bearing bracket and the material box mechanism to move synchronously along the height direction.

3. The pre-compressor for shredded tobacco according to claim 2, characterized in that, The material box mechanism further includes a material box bracket and a second driving member. The second driving member is mounted on the material box bracket or the material conveying sleeve. The material box bracket is connected to the load-bearing bracket, and the second driving member is connected to the material conveying sleeve. The second driving member is used to drive the material conveying sleeve to move relative to the load-bearing bracket along the height direction.

4. The pre-compressor for shredded tobacco sheets according to claim 3, characterized in that, The hopper mechanism further includes a meshing gear and a rack, the gear being connected to the second drive member, the rack extending along the height direction, one of the gear and rack being mounted on the hopper bracket, and the other being mounted on the conveying sleeve.

5. The pre-compressor for shredded tobacco according to claim 1, characterized in that, Also includes: A pre-compression mechanism is installed on the base. The pre-compression mechanism includes a pressure head and a third driving member connected to each other. The pressure head and the load-bearing bracket are located on different sides of the material conveying sleeve in the height direction. The third driving member is used to drive the pressure head to move relative to the load-bearing bracket in the height direction.

6. The pre-compressor for shredded tobacco according to claim 5, characterized in that, The shredded tobacco pre-compressor has a pre-compressed state, in which at least part of the press head passes through the conveying sleeve and extends into the carton located on the load-bearing bracket.

7. The pre-compressor for shredded tobacco according to claim 1, characterized in that, The material box mechanism also includes a material hopper and a material plate. The material hopper and the load-bearing bracket are located on different sides of the material conveying sleeve in the height direction. The material hopper is connected to the material conveying sleeve, and the material plate is movably connected to the material hopper and located inside the material hopper.

8. The pre-compressor for shredded tobacco according to claim 7, characterized in that, Also includes: A feeding mechanism is installed on the base and is located on one side of the conveying mechanism in the height direction. The feeding mechanism includes a second conveyor belt that extends along a first direction and faces the feeding hopper. The second conveyor belt is used to convey shredded tobacco leaves. The first direction intersects with the height direction.

9. The pre-compressor for shredded tobacco according to claim 8, characterized in that, The fabric hopper has two openings that connect the inside and outside of the fabric hopper. One opening is connected to the feed inlet, and the other opening faces the second conveyor belt.

10. The pre-compressor for shredded tobacco according to claim 1, characterized in that, The shredded tobacco pre-compressor has a feeding state, in which at least a portion of the feeding sleeve extends into the carton located on the load-bearing bracket.

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