Comprehensive Screening Machine and Comprehensive Screening Method for Distribution Characteristics of Moisture, Density, and Weight of Tobacco

Abstract

The present invention provides a comprehensive screening machine for distribution characteristics of moisture, density and weight of tobacco. It comprises a hopper (1), a microwave device (2), a weighing device (3), a sorting device (4) and an outer housing (5). The hopper (1) is used to accommodate tobacco samples to be analyzed, the microwave device (2) is located downstream of the hopper (1) and is used to measure the moisture and density of tobacco, the weighing device (3) is located downstream of the microwave device (2) and is used to measure the weight of tobacco, and the sorting device (4) is located downstream of the weighing device (3) and is used to sort tobacco with consistent moisture, density and weight. This comprehensive screening machine for distribution characteristics of moisture, density and weight of tobacco is non-destructive in the detection and screening process of tobacco. The measurement of moisture and density of tobacco uses a non-destructive microwave method, the weighing device (3) has a balance weighing pan and a buffer mechanism, and can accurately weigh tobacco, and the sorting device (4) is a drawer-type multi-stage tobacco sorting device.

Description

Technical Field

[0001] The present invention relates to the technical field of quality detection of cigarette products, and specifically to a comprehensive screening machine and a comprehensive screening method for the distribution characteristics of moisture, density, and weight of tobacco.

Background Art

[0002] In the manufacturing process of cigarettes, after cut tobacco passes through the suction forming system of a winding machine, the distribution of moisture, density, and weight in the cut tobacco part of the cigarette changes. Currently, in order to improve the quality and customer satisfaction of cigarette products, cigarette manufacturers usually organize a large number of evaluators to evaluate and score the finished cigarettes. Before conducting an evaluation meeting, it is necessary to ensure the objective consistency of the moisture, density, and weight of the tobacco to be evaluated by the evaluators and reduce the impact on the effectiveness of the evaluation. Therefore, it is necessary to uniformly process the tobacco. Currently, Chinese cigarette manufacturers usually only inspect the moisture, density, and weight of cut tobacco respectively, and there is no platform for comprehensively screening these three indicators.

[0003] In addition, in the weighing device for measuring the weight of tobacco in the prior art, before weighing the tobacco, the tobacco automatically falls onto the weighing pan due to gravity, and after weighing is completed, the tobacco is pushed out of the weighing pan and falls onto the sorting device due to the action of gravity. If appropriate measures are not taken, the tobacco may be impacted after falling, resulting in the cut tobacco becoming loose or falling off. As a result, even if the weight of the tobacco measured during weighing is accurate, the weight of the tobacco passed to the evaluator after weighing will be different. Therefore, it is very important to maintain the accuracy and stability of non-destructively detecting the weight of tobacco, but the weighing devices in the prior art clearly violate the non-destructive principle. In summary, it is very necessary to develop a weighing device with a buffer mechanism.

[0004] In a conventional tobacco sorting device, tobacco is weighed by a weighing device and directly falls into the receiving box of the sorting device. However, due to the action of gravity, there is a problem that chopped tobacco falls off while the tobacco is falling. In addition, tobacco often cannot fall smoothly into the corresponding receiving box while falling, and manual assistance is required. The sorted tobacco is messy and needs to be manually sorted, resulting in low efficiency and the possibility of damaging the tobacco during falling or manual sorting. Therefore, after the tobacco with high similarity in moisture, density, and weight determined in the previous detection step actually falls into the receiving box, the above indicators of the tobacco become inconsistent, affecting its use in the next test.

[0005] To solve the above problems, the present invention is proposed.

Summary of the Invention

[0006] By using a comprehensive screening machine for the distribution characteristics of moisture, density, and weight of tobacco, samples with the closest distribution characteristics of the three elements can be quickly and automatically found from a plurality of tobacco samples. This machine uses high-precision sensors to extract the distribution characteristic values of the three elements of the weight, moisture, and density of tobacco, uses a comprehensive comparison algorithm to find the most similar samples, and finally puts the most similar samples into a designated container by a sorting device.

[0007] According to the purpose and characteristics of uniform pretreatment of tobacco, the detection and screening process of tobacco should be non-destructive in the present invention. Therefore, the non-destructive microwave method is used to measure the moisture and density of tobacco, and an electronic balance is used to accurately weigh the tobacco. The whole machine has the advantages of being compact, reliable, and efficient.

[0008] The first aspect of the present invention provides a comprehensive screening machine for the distribution characteristics of moisture, density, and weight of tobacco, comprising a hopper 1, a microwave device 2, a weighing device 3, a sorting device 4, and an outer housing 5. The hopper 1 is used to accommodate tobacco samples to be analyzed. The microwave device 2 is located downstream of the hopper 1 and is used to measure the moisture and density of tobacco. The weighing device 3 is located downstream of the microwave device 2 and is used to measure the weight of tobacco. The sorting device 4 is located downstream of the weighing device 3 and is used to sort tobacco with consistent moisture, density, and weight.

[0009] Preferably, it further comprises an intelligent device 6. The intelligent device 6 classifies tobacco based on the data of the moisture, density, and weight of tobacco and controls the sorting device 4 to sort tobacco. The intelligent device 6 may be a computer.

[0010] The hopper 1 and the microwave device 2 of the present invention adopt a combined design, and the two are directly connected. The structure is compact and simple, with fewer working steps and higher efficiency. For the specific structures of the hopper 1 and the microwave device 2, existing patents can be referred to.

[0011] Here, a resonant cavity microwave sensor is used as the microwave sensor. When the sample passes through the microwave resonant cavity, a shift in the microwave frequency occurs. By measuring the amount of frequency shift, the moisture and density of the sample to be measured can be calculated. Also, the microwave measurement method is a global scanning method, and accurate measurement in millimeters is possible.

[0012] The key point of the present invention is not the specific structures of the hopper and the microwave device, but rather the first design of the weighing device 3 having a weighing pan and a buffer mechanism and the drawer-type multi-stage tobacco sorting device 4. The weighing device is arranged at the discharge port of the microwave device to further reduce the tobacco transfer process. The sorting device is arranged below the weighing device and has six sorting channels.

[0013] The weighing device 3 plays an important role in connecting the upper and lower parts when used in the comprehensive screening machine for the distribution characteristics of the moisture, density, and weight of tobacco. Since the microwave measurement mechanism on the upstream side and the sorting device on the downstream side of the weighing device in the comprehensive screening machine are vertically arranged up and down, the tobacco automatically falls into the weighing pan due to gravity. After the weighing is completed, the tobacco is pushed out of the weighing pan and falls into the sorting device. Because there is a large height difference between the two mechanisms, if appropriate measures are not taken, the tobacco may be impacted after falling, causing the cut tobacco to become loose or fall off, which clearly violates the non-destructive principle. Therefore, the buffer mechanism of the present invention is very necessary.

[0014] The main body of the weighing mechanism is an electronic balance with an accuracy of 0.1 mg. The present invention uses a weighing pan with a rake-shaped V-groove structure to receive and accommodate tobacco samples, and at the same time uses a low-speed descending rod to play a guiding role. After weighing, the tobacco is pushed out of the weighing pan by a lever and falls onto the low-speed descending rod. The low-speed descending rod slowly inserts the sample into the sorting mechanism by controlled rotation to avoid excessive impact energy.

[0015] The weighing device 3 plays an important role in connecting the upper and lower parts when used in the comprehensive screening machine for the distribution characteristics of the moisture, density, and weight of tobacco. To connect the upper and lower mechanisms, the present invention specially designs a weighing pan dedicated to the balance and a tobacco pushing device, and arranges a tobacco low-speed descending device to prevent the cut tobacco from falling off due to the fall of the tobacco. The balance weighing pan and the buffer mechanism in the present invention operate relatively independently and do not affect each other. After the weighing of the tobacco is completed, the buffer mechanism can be used to slowly drop the tobacco into the sorting device, preventing loosening and falling off due to the impact during the fall of the tobacco, and playing an important role in connecting the upper and lower parts.

[0016] The weighing device with the balance weighing pan and buffer mechanism of the present invention solves the technical problem of non-destructively detecting and screening the weight of tobacco.

[0017] To solve the above technical problems, the specific technical means of the weighing device with a balance weighing pan and a buffer mechanism according to the present invention are as follows.

[0018] The weighing device 3 is a weighing device having a balance weighing pan and a buffer mechanism, and includes a weighing table 31. A balance weighing pan and a buffer mechanism are provided on the weighing table 31. The balance weighing pan includes an electronic balance 32 and a weighing pan 33. A weighing pan 33 is connected to one end of the electronic balance 32. The weighing pan 33 includes a plurality of hook teeth 331 having a rake structure. The hook teeth 331 have a first V-shaped groove 3311, and cigarettes are horizontally arranged in the first V-shaped groove 3311 for weighing. The buffer mechanism includes a lever 34, a front baffle 35, and a slow descent rod 36. The lever 34 and the slow descent rod 36 are connected to form a pushing slow descent assembly. The intersection of the two forms a second V-shaped groove 342. The second V-shaped groove 342 is located below the first V-shaped groove 3311. When the cigarettes are weighed in the first V-shaped groove 3311, neither the lever 34 nor the slow descent rod 36 contacts the cigarettes so as not to affect the weighing of the cigarettes. The pushing slow descent assembly is located between two adjacent hook teeth 331, that is, the pushing slow descent assembly and the hook teeth 331 are arranged in a staggered manner. The front baffle 35 is located on one side of the weighing pan 33. A plurality of elongated holes 351 are provided in the front baffle 35. The slow descent rod 36 passes through the elongated holes 351 to form a third V-shaped groove 361 with the front baffle 35.

[0019] The operation process of the buffer mechanism is After the tobacco is measured in the first V-shaped groove 3311, the lever 34 and the low-speed lowering rod 36 rotate along their connecting part towards the front baffle 35, so that the low-speed lowering rod 36 moves downward from top to bottom through the elongated hole 351, and the lever 34 pushes the tobacco in the first V-shaped groove 3311 and moves it along the low-speed lowering rod to the third V-shaped groove 361. The low-speed lowering rod 36 continues to rotate until it completely separates from the front baffle 35. At this time, the third V-shaped groove 361 disappears, and a slit 362 is formed between the low-speed lowering rod 36 and the front baffle 35. The tobacco passes through the slit 362 and leaves the buffer mechanism, and the weighing and low-speed lowering of the tobacco are completed.

[0020] The rake-shaped weighing plate, the lever, and the low-speed lowering rod ensure the speed of the tobacco during falling, do not give excessive impact, and prevent the loosening and dropping of the cut tobacco.

[0021] Preferably, the second V-shaped groove 342 formed by the lever 34 and the low-speed lowering rod 36 forms a 90° angle.

[0022] Preferably, the plurality of hook teeth 331 face the front baffle 35.

[0023] Preferably, a lever motor 341 is provided on the weighing table 31, and the lever motor 341 controls the lever 34 to rotate the low-speed lowering rod 36 towards the front baffle 35 side.

[0024] Preferably, when the width of the slit 362 is greater than or equal to the diameter of the tobacco, the tobacco passes through the slit 362 and leaves the buffer mechanism.

[0025] Preferably, the hook teeth 331 are sheet-shaped, the lever 34 is strip-shaped, and the low-speed lowering rod 36 is cylindrical. With this configuration, it becomes easy to push the tobacco and lower it slowly along the low-speed lowering rod 36.

[0026] Preferably, in the weighing process, before the buffer mechanism operates, the lever 34 is lower than the first V-shaped groove 3311, and the low-speed lowering rod 36 is higher than the first V-shaped groove 3311. In this case, the low-speed lowering rod 36 serves as a guide and position regulator, preventing the tobacco from jumping out of the weighing pan 33 due to inertia when the tobacco falls from the previous process into the first V-shaped groove 3311.

[0027] Preferably, by controlling the rotation speeds of the lever 34 and the low-speed lowering rod 36, the falling speed of the tobacco is controlled to achieve the effect of lowering the tobacco at a low speed, preventing the tobacco from directly falling and damaging the cut tobacco part after weighing.

[0028] A method for weighing and lowering tobacco at a low speed by a weighing device having a balance weighing pan and a buffer mechanism is as follows. a. When the tobacco falls from the previous process into the first V-shaped groove 3311, weighing the tobacco by the electronic balance 32. b. After weighing, rotating the lever 34 and the low-speed lowering rod 36 towards the front baffle 35, and the low-speed lowering rod 36 moves downward from top to bottom through the elongated hole 351 by the lever 34. The lever 34 pushes the tobacco in the first V-shaped groove 3311 and moves it along the low-speed lowering rod 36 to the third V-shaped groove 361. c. Continuing to rotate the low-speed lowering rod 36 until it completely separates from the front baffle 35. At this time, the third V-shaped groove 361 disappears, and a slit 362 is formed between the low-speed lowering rod 36 and the front baffle 35. When the width of the slit 362 is greater than or equal to the diameter of the tobacco, the tobacco passes through the slit 362 and leaves the buffer mechanism, including the step of completing the weighing and low-speed lowering of the tobacco.

[0029] The weighing device having a balance weighing pan and a buffer mechanism of the present invention has the following characteristics. (1) The weighing pan forms a rake-like structure by using a plurality of V-shaped thin plates. (2) The lever forms a rake-like structure by using a plurality of strip-shaped materials. (3) The low-speed lowering rod forms a rake-like structure using a plurality of cylindrical materials. (4) The rake-shaped measuring dish, lever, and low-speed lowering rod ensure the speed of the tobacco during falling, without applying excessive impact, and prevent loosening or dropping of the cut tobacco. (5) The measuring dish and the lever are arranged in a staggered pattern so as not to affect each other's operations. (6) During weighing, the lever is lower than the V-shaped groove of the measuring dish and does not contact the tobacco. (7) The lever and the low-speed lowering rod are connected one by one, and the angle formed by the lever and the low-speed lowering rod is 90°. (8) When the lever is in the standby position lower than the V-shaped groove, the low-speed lowering rod is in a position higher than the V-shaped groove, and the low-speed lowering rod and the V-shaped groove form a predetermined angle. (9) The low-speed lowering rod plays a guiding role when in a high position, preventing the tobacco from jumping out of the measuring dish when falling from the microwave device. (10) The low-speed lowering rod and the front baffle form a groove-like structure with each other, and by controlling the rotation speed of the low-speed lowering rod, the falling speed of the tobacco can be controlled. (11) When the low-speed lowering rod rotates clockwise to the extreme position, it separates from the front baffle, and the distance between them becomes larger than the diameter of the tobacco, and the tobacco is discharged.

[0030] On the other hand, the comprehensive screening machine for the distribution characteristics of moisture, density, and weight of tobacco needs to quickly and automatically find the sample with the closest distribution characteristics of the three elements from a plurality of tobacco samples and put the most similar sample into the designated container. The sorting device of the present invention has six sorting containers for accommodating samples with different characteristics. Considering the user's operation convenience and high maintainability according to the overall layout, the present invention adopts a design with the sorting device as a part. And the whole sorting device is arranged in a forward drawer, and the mechanism and sorting containers can be exposed just by pulling it out, so that the operation, maintenance, and removal of the container are facilitated.

[0031] The object of the present invention is to provide a drawer-type multi-stage tobacco sorting device in order to solve the technical problem of quickly and automatically putting the most similar tobacco samples into a designated container.

[0032] The sorting device 4 is a drawer-type multi-stage tobacco sorting device, and includes a receiving hand 41, a receiving tank 42, a one-dimensional moving table 43, a drawer panel 44, and a receiving box guide rail 45. The receiving tank 42 has a plurality of receiving boxes 421, and the plurality of receiving boxes 421 are arranged in parallel in the x-axis direction. The one-dimensional moving table 43 is located on one side of the receiving box 421, and has a receiving hand 41 above the one-dimensional moving table 43. The receiving hand 41 moves in the x-axis direction along the one-dimensional moving table 43 so as to be located on one side of different receiving boxes 421. One end of the receiving hand 41 is a tobacco receiving groove 417. The tobacco receiving groove 417 can rotate from the x-axis direction to the y-axis direction, that is, it can rotate from one side of the receiving box 421 to directly above the receiving box 421, and can receive tobacco and drop it into the receiving box 421. By pushing and pulling the drawer panel 44, the receiving box 421 can be moved in the y-axis direction along the receiving box guide rail 45.

[0033] The one-dimensional moving table 43 is a moving table commonly used in the art, and it is sufficient that it is connected to a driving device and can reciprocate the receiving hand 41 linearly in one dimension along the x-axis. For example, a receiving hand cylinder is provided on one side of the one-dimensional moving table 43, and the receiving hand cylinder moves the receiving hand 41 in the x-axis direction so that the receiving hand 41 is located on one side of different receiving boxes 421.

[0034] In the drawer-type multi-stage cigarette sorting device of the present invention, the receiving hand is movably provided on the one-dimensional moving table, reciprocates between the receiving boxes, and can place the most similar sample in the designated container under the control of an external program, eliminating the need for manual assistance and significantly improving work efficiency.

[0035] The overall shapes of the drawer panel 44, the receiving tank 42, and the receiving box guide rail 45 resemble a drawer. By pushing and pulling the drawer panel 44, the receiving tank 42 can be pushed or pulled along the receiving box guide rail 45.

[0036] The number of receiving boxes 421 can be determined according to the sorting target.

[0037] The positioning of the receiving hand is performed by an external sensor.

[0038] Preferably, a receiving hand cylinder 46 is provided on one side of the one-dimensional moving table 43. The receiving hand cylinder 46 can reciprocate the receiving hand 41 in the x-axis direction so that the receiving hand 41 is located on one side of a different receiving box 421.

[0039] Preferably, the drawer panel 44 has a push-pull handle 441. By pushing and pulling the drawer panel 44 through the push-pull handle 441, the receiving box 421 can be reciprocated in the y-axis direction along the receiving box guide rail 45.

[0040] Preferably, the receiving hand 41 further includes a rotating cylinder 413 that rotationally drives the cigarette receiving groove 417 so that the cigarette receiving groove 417 rotates from the receiving position 415 in the x-axis direction to the discharging position 416 in the y-axis direction, that is, the cigarette receiving groove 417 rotates from one side of the receiving box 421 to directly above the receiving box 421.

[0041] Preferably, when the tobacco receiving groove 417 is at the receiving position 415, the angle of the tobacco receiving groove 417 is 180° or less so as to receive the tobacco, and when the tobacco receiving groove 417 is at the discharging position 416, the angle of the tobacco receiving groove 417 is greater than 180° so as to drop the tobacco into the tobacco receiving box 421.

[0042] Preferably, the tobacco receiving groove 417 is a V-shaped groove structure formed by the rotary baffle 411 and the fixed baffle 412.

[0043] Preferably, the receiving hand 41 further includes a baffle cylinder 414 that rotationally drives the rotary baffle 411 so as to change the angle between the rotary baffle 411 and the fixed baffle 412 and drop the tobacco in the tobacco receiving groove 417 into the tobacco receiving box 421.

[0044] Since the fixed baffle 412 is fixed during the movement of the rotary baffle 411, the angle of the tobacco receiving groove 417 changes. When the angle of the tobacco receiving groove 417 is 180° or less, the tobacco can be received, and when the angle of the tobacco receiving groove 417 is greater than 180°, the tobacco can be dropped into the tobacco receiving box 421.

[0045] Preferably, when the rotary baffle 411 rotates, the distance between the rotary baffle 411 and the fixed baffle 412 also changes. When receiving cigarettes, the V-shaped groove of the receiving hand 41 is in a closed state, and the rotary baffle 411 and the fixed baffle 412 maintain a distance smaller than the diameter of the thinnest cigarette, so that when chopped cigarettes or other fragments fall, they can fall from the distance to ensure that the receiving hand 41 operates effectively over a long period. When discharging cigarettes, the V-shaped groove of the receiving hand 41 is opened, and the distance between the rotary baffle 411 and the fixed baffle 412 becomes larger than the diameter of the thickest cigarette. The distance between the rotary baffle and the fixed baffle is controlled so that the rotary baffle and the fixed baffle maintain a predetermined distance, and when chopped cigarettes or other fragments fall, they can fall from the distance to ensure that the receiving hand 41 operates effectively over a long period, and the screening of cigarettes is simple and rapid.

[0046] Preferably, the length of the cigarette receiving groove 417 is greater than or equal to the length of the cigarette, and the length of the receiving box 421 in the y-axis direction is greater than or equal to the length of the cigarette receiving groove 417.

[0047] Preferably, the receiving box 421 can be taken out from the receiving tank 42.

[0048] The sorting method of the drawer-type multi-stage cigarette sorting device is A. The step that the receiving hand 41 moves in the x-axis direction along the one-dimensional moving platform 43 so as to be located on one side of different receiving boxes 421; B. The step that the cigarette receiving groove 417 rotates from the x-axis direction to the y-axis direction, that is, rotates from one side of the receiving box 421 to directly above the receiving box 421, and receives the cigarette and drops it into the receiving box 421; C. The step of moving the receiving box 421 in the y-axis direction along the receiving box guide rail 45 by pushing and pulling the drawer panel 44 to detach the receiving box 421 or take out the cigarettes in the receiving box 421. The above steps can be performed in any order.

[0049] When the receiving hand 41 is at the discharge position 416, the V-shaped groove of the receiving hand 41 is positioned directly above the receiving box 421. By driving the rotating baffle 411 with the baffle cylinder 414, the V-shaped groove of the receiving hand 41 is opened, and the tobacco falls into the receiving box 421, completing the tobacco discharge operation.

[0050] The drawer-type multi-stage tobacco sorting device of the present invention has the following characteristics. (1) Use the V-shaped groove as a temporary tobacco storage device. (2) One plate of the V-shaped groove is fixed, and the other plate can rotate to control the size of the gap between the two plates. (3) The rotation and opening / closing of the movable baffle are controlled using a cylinder. (4) The trolley movement method facilitates the movement and positioning of the receiving hand. (5) A rotating cylinder is arranged at the bottom of the receiving hand, and the angle of the V-shaped groove of the receiving hand can be changed. (6) The trolley is driven by an electric cylinder to perform reciprocating linear movement. (7) The positioning of the receiving hand is performed by an external sensor. (8) Six receiving boxes are arranged horizontally in parallel and are located on the front side of the sorting device, making it easy to take out.

[0051] The second aspect of the present invention provides a comprehensive screening method for the distribution characteristics of tobacco moisture, density, and weight. Using the comprehensive screening machine for the distribution characteristics of tobacco moisture, density, and weight described in the first aspect of the present invention, (1) A step of accommodating a tobacco sample to be analyzed in the hopper 1, and (2) A step of measuring the moisture and density of the tobacco using the microwave device 2, and (3) A step of measuring the weight of the tobacco using the weighing device 3, and (4) A step of sorting cigarettes with the same moisture content, density, and weight by the sorting device 4 is included.

[0052] The comprehensive screening machine of the present invention has the following characteristics. (1) Using microwave and balance, measure the distribution characteristics of the three elements of moisture, density, and weight of cigarettes, and find the closest cigarette samples with a similarity algorithm. (2) By the discharge method using a rotating bucket, the microwave mechanism and the weighing mechanism are organically connected. (3) With a rake-shaped weighing dish, a lever, and a low-speed dropping rod, ensure that the cigarettes do not receive excessive impact when falling, and prevent the dropping of cut cigarettes. (4) Use a V-shaped receiving hand that rotates to open and close to hold cigarettes, and use a rotating device to adjust the angle of the receiving hand to meet the requirements of flexible layout and usability. (5) By the moving method of the trolley, the movement and positioning of the receiving hand are facilitated. (6) The transfer of cigarettes between the three mechanisms of microwave → weighing → sorting adopts the gravity dropping method, simplifies the transfer mechanism, and improves the efficiency.

[0053] The comprehensive screening machine for the distribution characteristics of moisture, density, and weight of cigarettes of the present invention has a non-destructive process for detecting and screening cigarettes. Therefore, the present invention measures the moisture and density of cigarettes using the non-destructive microwave method, accurately weighs the cigarettes using a weighing device 3 with a balance weighing dish and a buffer mechanism, and the sorting device 4 is a drawer-type multi-stage cigarette sorting device. The whole machine has the advantages of being compact, reliable, and efficient.

[0054] Compared with the prior art, the weighing device with a balance weighing dish and a buffer mechanism of the present invention has the following advantages.

[0055] 1. The weighing device with a weighing pan and a buffer mechanism of the present invention combines an electronic balance and a buffer mechanism. After the weighing of tobacco is completed, the buffer mechanism can be used to slowly drop the tobacco into the sorting device, preventing loosening or dropping due to the impact during tobacco dropping, and playing an important role in connecting the upper and lower parts. In particular, when weighing tobacco, the buffer mechanism of the present invention does not affect the weighing of tobacco.

[0056] 2. In the weighing device with a weighing pan and a buffer mechanism of the present invention, during the weighing process, before the buffer mechanism operates, the lever 34 is lower than the first V-shaped groove 3311, and the low-speed descending rod 36 is higher than the first V-shaped groove 3311. In this case, the low-speed descending rod 36 plays a role of guiding and position regulation, preventing the tobacco from jumping out of the weighing pan 33 due to the action of inertia when the tobacco drops from the previous process into the first V-shaped groove 3311.

[0057] 3. In the weighing device with a weighing pan and a buffer mechanism of the present invention, during the weighing process, when the tobacco is weighed in the first V-shaped groove 3311, neither the lever 34 nor the low-speed descending rod 36 contacts the tobacco so as not to affect the weighing of the tobacco. That is, the weighing pan and the buffer mechanism of the balance operate relatively independently and do not affect each other.

[0058] 4. In a preferred embodiment of the present invention, by controlling the rotation speed of the low-speed descending rod 36, the dropping speed of the tobacco is controlled to achieve the effect of slowly dropping the tobacco, ensuring the speed of the tobacco during dropping, not giving excessive impact, and preventing loosening or dropping of cut tobacco.

[0059] Compared with the prior art, the drawer-type multi-stage tobacco sorting device of the present invention has the following advantages.

[0060] 1. In the drawer-type multi-stage tobacco sorting device of the present invention, the receiving hand is movably provided on the one-dimensional moving table, reciprocates between the receiving boxes, and can place the most similar samples in the designated container under the control of an external program, eliminating the need for manual assistance and significantly improving work efficiency. Further, one end of the receiving hand 41 is a tobacco receiving groove 417, and the tobacco receiving groove 417 can rotate from the x-axis direction to the y-axis direction, that is, it can rotate from one side of the receiving box 421 to directly above the receiving box 421, and can receive the tobacco and drop it into the receiving box 421.

[0061] 2. In the drawer-type multi-stage tobacco sorting device of the present invention, the tobacco receiving groove 417 is a V-shaped groove structure formed by a rotating baffle 411 and a fixed baffle 412, which can facilitate the accommodation of tobacco. With the openable and closable V-shaped groove structure, the distance between the rotating baffle and the fixed baffle is controlled so that the rotating baffle and the fixed baffle maintain a predetermined distance. When chopped tobacco or other fragments fall, they can fall from the gap to ensure that the receiving hand 41 operates effectively over a long period, making the screening of tobacco simple and rapid.

[0062] 3. In the drawer-type multi-stage tobacco sorting device of the present invention, the overall shapes of the drawer panel 44, the receiving tank 42, and the receiving box guide rail 45 resemble a drawer. By pushing and pulling the drawer panel 44, the receiving tank 42 can be pushed or pulled along the receiving box guide rail 45, making it easy to take out the sorted tobacco after sorting, and also facilitating the operation and maintenance of the entire device. Further, the receiving box 421 in the sorting device of the present invention can be taken out from the receiving tank 42, facilitating the cleaning and maintenance of the receiving box 421.

Brief Description of the Drawings

[0063]

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Embodiments for Carrying Out the Invention

[0064] Hereinafter, the present invention will be described in detail with reference to examples.

[0065] Those skilled in the art will understand that the following examples are only for explaining the present invention and do not limit the scope of the present invention. When specific technologies or conditions are not specified in the examples, the technologies or conditions described in the literature in the relevant field or the instructions of the product are followed. Unless the manufacturer of the materials or equipment used is specified, all are common products that can be purchased.

[0066] In order to better understand the object, structure and function of the present invention, hereinafter, with reference to the accompanying drawings, the weighing device with a weighing pan and a buffer mechanism of the present invention will be described in more detail.

[0067] As shown in FIG. 1, the comprehensive screening machine for the distribution characteristics of moisture, density and weight of tobacco comprises a hopper 1, a microwave device 2, a weighing device 3, a sorting device 4 and an outer housing 5. The hopper 1 is used to accommodate the tobacco sample to be analyzed. The microwave device 2 is located downstream of the hopper 1 and is used to measure the moisture and density of the tobacco. The weighing device 3 is located downstream of the microwave device 2 and is used to measure the weight of the tobacco. The sorting device 4 is located downstream of the weighing device 3 and is used to sort the tobacco with consistent moisture, density and weight.

[0068] The comprehensive screening machine for the distribution characteristics of moisture, density and weight of tobacco further comprises an intelligent device 6. The intelligent device 6 classifies the tobacco based on the data of the moisture, density and weight of the tobacco and controls the sorting device 4 to sort the tobacco. The intelligent device 6 may be a computer.

[0069] The usage method of the comprehensive screening machine for the distribution characteristics of moisture, density and weight of tobacco is (1) The step of accommodating the tobacco sample to be analyzed in the hopper 1, (2) The step of measuring the moisture and density of the tobacco using the microwave device 2, (3) The step of measuring the weight of the tobacco using the weighing device 3, (4) A step of sorting cigarettes with the same moisture content, density, and weight by the sorting device 4 is included.

[0070] The specific working process is as follows: After turning on the power of the machine, when the computer automatically starts and the dedicated control software starts, access to check whether the air pressure is normal. Prepare a tobacco sample, place it properly in the hopper with the filter part on the left side, and set the range of sample parameters for each receiving box with the control software. When the start button is clicked, the machine automatically performs measurement, comparison, and screening.

[0071] Specifically, regarding the operation of the hopper mechanism, after the start of work, the kick roller in the hopper rotates continuously until the measurement is completed. By separating the tobacco sample in the deposition area of the hopper with the pin of the kick roller, it is possible to prevent the sample from depositing and hindering the continuous supply of the hopper.

[0072] Due to the operation of the hopper, the tobacco automatically falls into the V-shaped groove in front of the tip of the push rod so that the end of the tobacco faces the tip of the push rod. The push rod is arranged at a specific position, and the highest point is below the height of the thinnest tobacco in the vertical direction. The push rod is connected to the slider of the electric cylinder and is driven by the electric cylinder to move linearly, pushing the tobacco to pass through the microwave sensor to collect data on the moisture and density of the tobacco sample. The push rod continues to push the sample until it completely passes through the passage of the microwave sensor so that the tobacco sample stays in the discharge bucket. Driven by the motor, the discharge bucket rotates to put the tobacco into the weighing pan of the weighing mechanism.

[0073] When the tobacco stabilizes in the V-shaped groove of the weighing pan, the weighing of the tobacco by the balance is completed. Driven by the motor, the lever rotates to push the tobacco out of the V-shaped groove of the weighing pan, and the tobacco falls onto the low-speed dropping rod. Due to the rotation of the low-speed dropping rod, the tobacco descends slowly and falls onto the receiving hand of the sorting device.

[0074] The receiving hand of the sorting device is located below the weighing dish and faces the discharge port of the low-speed dropping rod. At this time, the rotary baffle of the receiving hand is in a closed state, and the tobacco falls into the groove of the receiving hand. Next, the rotary cylinder rotates to adjust the angle of the receiving hand so that the direction of receiving the tobacco is opposite to the direction of the receiving box. Next, the electric cylinder moves to move the receiving hand above the corresponding receiving box and hold it. At this time, the receiving hand cylinder controls the rotary baffle to release the receiving hand, and the tobacco falls into the lower receiving box, and the sorting of the tobacco is completed. Then, the receiving hand returns to the default position and waits for the next sorting.

[0075] As shown in FIGS. 2 to 7, the weighing device having a balance weighing dish and a buffer mechanism includes a weighing table 31, and a balance weighing dish and a buffer mechanism are provided on the weighing table 31. The balance weighing dish includes an electronic balance 32 and a weighing dish 33. A weighing dish 33 is connected to one end of the electronic balance 32. The weighing dish 33 is provided with a plurality of hook teeth 331 having a rake structure. The hook teeth 331 have a first V-shaped groove 3311, and the tobacco is horizontally arranged in the first V-shaped groove 3311 and weighed. The buffer mechanism includes a lever 34, a front baffle 35, and a low-speed dropping rod 36. The lever 34 and the low-speed dropping rod 36 are connected to form a pushing low-speed dropping assembly. The intersection of the two forms a second V-shaped groove 342. The second V-shaped groove 342 is located below the first V-shaped groove 3311. When the tobacco 7 is weighed in the first V-shaped groove 3311, neither the lever 34 nor the low-speed dropping rod 36 contacts the tobacco 7 so as not to affect the weighing of the tobacco 7. The pushing low-speed dropping assembly is located between two adjacent hook teeth 331. That is, the pushing low-speed dropping assembly and the hook teeth 331 are arranged in a staggered manner. The front baffle 35 is located on one side of the weighing dish 33. A plurality of elongated holes 351 are provided in the front baffle 35. The low-speed descending rod 36 penetrates through the elongated holes 351 to form the front baffle 35 and the third V-shaped groove 361.

[0076] The operation process of the buffer mechanism is After the tobacco 7 is weighed in the first V-shaped groove 3311, the lever 34 and the low-speed descending rod 36 rotate along their connecting parts towards the front baffle 35. As a result, the low-speed descending rod 36 moves from top to bottom through the elongated holes 351. The lever 34 pushes the tobacco 7 in the first V-shaped groove 3311 and moves it along the low-speed descending rod to the third V-shaped groove 361. The low-speed descending rod 36 continues to rotate until it completely separates from the front baffle 35. At this time, the third V-shaped groove 361 disappears, and a slit 362 is formed between the low-speed descending rod 36 and the front baffle 35. The tobacco 7 passes through the slit 362 and leaves the buffer mechanism, completing the weighing and low-speed descent of the tobacco.

[0077] The rake-shaped weighing dish, the lever, and the low-speed descending rod ensure the speed of the falling tobacco 7, do not give excessive impact, and prevent the loosening and falling off of the cut tobacco.

[0078] The second V-shaped groove 342 formed by the lever 34 and the low-speed descending rod 36 forms an angle of 90°.

[0079] The plurality of hook teeth 331 face the front baffle 35.

[0080] A lever motor 341 is provided on the weighing platform 31. The lever motor 341 controls the lever 34 to rotate the low-speed descending rod 36 towards the front baffle 35 side.

[0081] When the width of the slit 362 is greater than or equal to the diameter of the tobacco 7, the tobacco 7 passes through the slit 362 and leaves the buffer mechanism.

[0082] The hook teeth 331 are sheet-shaped, the lever 34 is strip-shaped, and the low-speed lowering rod 36 is cylindrical.

[0083] In the weighing process, before the buffer mechanism operates, the lever 34 is lower than the first V-shaped groove 3311, and the low-speed lowering rod 36 is higher than the first V-shaped groove 3311. In this case, the low-speed lowering rod 36 serves as a guide and a position restricting means, preventing the tobacco 7 from jumping out of the weighing pan 33 due to the action of inertia when the tobacco 7 falls from the previous process into the first V-shaped groove 3311.

[0084] By controlling the rotation speeds of the lever 34 and the low-speed lowering rod 36, the falling speed of the tobacco 7 is controlled to achieve the effect of lowering the tobacco 7 at a low speed.

[0085] The method for weighing and lowering the tobacco 7 at a low speed using the weighing device having the weighing pan and the buffer mechanism of the present invention is as follows: a. When the tobacco 7 falls from the previous process into the first V-shaped groove 3311, weighing the tobacco 7 by the electronic balance 32; b. After weighing, rotating the lever 34 and the low-speed lowering rod 36 towards the front baffle 35, and moving the low-speed lowering rod 36 downward from above through the elongated hole 351 by the lever 34. The lever 34 pushes the tobacco 7 in the first V-shaped groove 3311 and moves it to the third V-shaped groove 361; c. Continuing to rotate the low-speed lowering rod 36 until it completely separates from the front baffle 35. At this time, the third V-shaped groove 361 disappears, a slit 362 is formed between the low-speed lowering rod 36 and the front baffle 35. When the width of the slit 362 is equal to or greater than the diameter of the tobacco 7, the tobacco 7 passes through the slit 362 and separates from the buffer mechanism.

[0086] To connect the upper and lower mechanisms, the present invention specially designs a weighing pan dedicated to the balance and a tobacco pushing device, and arranges a low-speed lowering device for the tobacco 7 to prevent the cut tobacco from falling off due to the fall of the tobacco 7.

[0087] The measuring dish forms a rake-like structure of V-shaped grooves using a thin plate, and the lever forms a rake-like structure using a strip-shaped material. The rake-like structures of both the measuring dish and the lever are arranged in a staggered manner with respect to each other, and the standby position of the lever is lower than the V-shaped groove of the measuring dish. After the tobacco 7 falls from the rotating bucket of the microwave device, it falls into the V-shaped groove of the measuring dish for measurement, and then the tobacco 7 is pushed out of the measuring dish by the lever.

[0088] The low-speed descending rod is connected to the lever and forms a 90° angle. When the lever is in the standby position, the low-speed descending rod is just at a position higher than the V-shaped groove of the measuring dish. Therefore, when the tobacco 7 falls from the rotating bucket of the microwave device, the low-speed descending rod serves as a guide and prevents the tobacco 7 from jumping out of the V-shaped groove of the measuring dish.

[0089] After the lever pushes the tobacco out of the V-shaped groove of the measuring dish, the tobacco 7 falls due to the action of gravity into the V-shaped groove formed by the low-speed descending rod and the front baffle. The rotation of the low-speed descending rod is controlled so that it rotates slowly by the drive of the lever motor, and the tobacco 7 falls slowly along the front baffle, achieving the purpose of preventing the excessive fall of the tobacco 7.

[0090] After the low-speed descending rod rotates clockwise until it separates from the front baffle and the gap becomes larger than the diameter of the tobacco 7, the tobacco 7 separates from the low-speed descending rod and just falls onto the receiving hand of the sorting device.

[0091] By the drive of the motor, the discharge bucket rotates to put the tobacco 7 into the weighing dish of the weighing device. At this time, the lever and the low-speed descending rod are in the positions shown in Figure 4, and the low-speed descending rod serves as a position regulation and guiding role to prevent the tobacco 7 from jumping out.

[0092] When the tobacco 7 is stabilized in the V-shaped groove of the weighing pan, the weighing of the tobacco 7 by the balance is completed. Driven by the motor, the lever rotates to push out the tobacco 7 from the V-shaped groove of the weighing pan, and the tobacco 7 falls into the groove formed by the low-speed dropping rod and the front baffle. Due to the rotation of the low-speed dropping rod, the tobacco 7 descends slowly and falls onto the receiving hand of the sorting device.

[0093] As shown in FIGS. 8 to 12, the drawer-type multi-stage tobacco sorting device includes a receiving hand 41, a receiving tank 42, a one-dimensional moving platform 43, a drawer panel 44, and a receiving box guide rail 45. The receiving tank 42 has a plurality of receiving boxes 421, and the plurality of receiving boxes 421 are arranged in parallel in the x-axis direction. The one-dimensional moving platform 43 is located on one side of the receiving box 421, and has a receiving hand 41 above the one-dimensional moving platform 43. The receiving hand 41 moves along the one-dimensional moving platform 43 in the x-axis direction so as to be located on one side of different receiving boxes 421. One end of the receiving hand 41 is a tobacco receiving groove 417. The tobacco receiving groove 417 can rotate from the x-axis direction to the y-axis direction, that is, it can rotate from one side of the receiving box 421 to directly above the receiving box 421, and can receive the tobacco and drop it into the receiving box 421. By pushing and pulling the drawer panel 44, the receiving box 421 can be moved in the y-axis direction along the receiving box guide rail 45.

[0094] The one-dimensional moving platform 43 is a moving platform commonly used in the art, and is connected to a driving device, as long as it can linearly reciprocate the receiving hand 41 in the one-dimensional direction along the x-axis. For example, a receiving hand cylinder is provided on one side of the one-dimensional moving platform 43, and the receiving hand cylinder moves the receiving hand 41 in the x-axis direction so that the receiving hand 41 is located on one side of different receiving boxes 421.

[0095] The overall shapes of the drawer panel 44, the receiving tank 42, and the receiving box guide rail 45 resemble a drawer. By pushing and pulling the drawer panel 44, the receiving tank 42 can be pushed or pulled along the receiving box guide rail 45.

[0096] The number of receiving boxes 421 can be determined according to the sorting target.

[0097] The positioning of the receiving hand is performed by an external sensor.

[0098] A receiving hand cylinder 46 is provided on one side of the one-dimensional moving base 43. The receiving hand cylinder 46 can reciprocate the receiving hand 41 in the x-axis direction so that the receiving hand 41 is located on one side of different receiving boxes 421.

[0099] The drawer panel 44 has a push-pull handle 441. By pushing and pulling the drawer panel 44 through the push-pull handle 441, the receiving box 421 can be reciprocated in the y-axis direction along the receiving box guide rail 45.

[0100] The receiving hand 41 further includes a rotating cylinder 413 that rotationally drives the tobacco receiving groove 417 so that the tobacco receiving groove 417 rotates from the receiving position 415 in the x-axis direction to the discharging position 416 in the y-axis direction, that is, the tobacco receiving groove 417 rotates from one side of the receiving box 421 to directly above the receiving box 421.

[0101] When the tobacco receiving groove 417 is at the receiving position 415, the angle of the tobacco receiving groove 417 is 180° or less so as to receive tobacco. When the tobacco receiving groove 417 is at the discharging position 416, the angle of the tobacco receiving groove 417 is greater than 180° so as to drop the tobacco into the receiving box 421.

[0102] The cigarette receiving groove 417 has a V-shaped groove structure formed by a rotating baffle 411 and a fixed baffle 412.

[0103] The receiving hand 41 further includes a baffle cylinder 414 that rotationally drives the rotating baffle 411 so as to change the angle between the rotating baffle 411 and the fixed baffle 412 and drop the cigarettes in the cigarette receiving groove 417 into the receiving box 421.

[0104] Since the fixed baffle 412 is fixed during the movement of the rotating baffle 411, the angle of the cigarette receiving groove 417 changes. When the angle of the cigarette receiving groove 417 is 180° or less, cigarettes can be received. When the angle of the cigarette receiving groove 417 is greater than 180°, the cigarettes can be dropped into the receiving box 421.

[0105] When the rotating baffle 411 rotates, the distance between the rotating baffle 411 and the fixed baffle 412 also changes. When receiving cigarettes, the V-shaped groove of the receiving hand 41 is in a closed state, and the rotating baffle 411 and the fixed baffle 412 maintain a distance smaller than the diameter of the thinnest cigarette, so that when chopped cigarettes or other fragments fall, they can fall from the distance to ensure that the receiving hand 41 operates effectively over a long period. When discharging cigarettes, the V-shaped groove of the receiving hand 41 opens, and the distance between the rotating baffle 411 and the fixed baffle 412 becomes larger than the diameter of the thickest cigarette. The distance between the rotating baffle and the fixed baffle is controlled so that the rotating baffle and the fixed baffle maintain a predetermined distance, so that when chopped cigarettes or other fragments fall, they can fall from the distance to ensure that the receiving hand 41 operates effectively over a long period, and the screening of cigarettes is simple and rapid.

[0106] The length of the cigarette receiving groove 417 is equal to or greater than the length of the cigarette, and the length of the receiving box 421 in the y-axis direction is equal to or greater than the length of the cigarette receiving groove 417.

[0107] The receiving box 421 can be taken out from the receiving tank 42.

[0108] The sorting method of the drawer-type multi-stage cigarette sorting device of the present invention is as follows. A. The receiving hand 41 moves in the x-axis direction along the one-dimensional moving table 43 so as to be located on one side of different receiving boxes 421. B. The cigarette receiving groove 417 rotates from the x-axis direction to the y-axis direction, that is, rotates from one side of the receiving box 421 to directly above the receiving box 421, and receives the cigarettes and drops them into the receiving box 421. C. By pushing and pulling the drawer panel 44, the receiving box 421 is moved in the y-axis direction along the receiving box guide rail 45 to detach the receiving box 421 or take out the cigarettes in the receiving box 421. The above steps are not in a specific order. The above steps are not in a specific order.

[0109] When the receiving hand 41 is at the discharge position 416, the V-shaped groove of the receiving hand 41 is located directly above the receiving box 421. By driving the rotating baffle 411 by the baffle cylinder 414, the V-shaped groove of the receiving hand 41 is opened, and the cigarettes fall into the receiving box 421, and the discharge operation of the cigarettes is completed.

[0110] Since the sorting device is arranged below the weighing plate of the weighing device and the receiving hand faces the weighing plate, the cigarettes directly fall into the groove of the receiving hand. Since the sorting device is in a drawer shape as a whole, it can be easily taken out to the front side, and maintenance and removal of the receiving box are easy.

[0111] The receiving hand adopts a V-shaped groove composed of two thin plates. One baffle is fixed, and the other baffle rotates by the drive of a cylinder to open and close the V-shaped groove, thereby performing the operation of receiving or discharging cigarettes. When the receiving hand closes, the distance between the two baffles is smaller than the diameter of the thinnest cigarette. When the receiving hand opens, the minimum distance between the two baffles is larger than the diameter of the thickest cigarette. There is a predetermined gap regardless of the opening and closing of the receiving hand. When chopped cigarettes or other fragments fall, they can fall through the gap, improving the reliability of long-term operation.

[0112] Considering that the angle between the receiving position and the discharging position is 90°, the receiving hand is attached to a rotating cylinder and the direction of the receiving hand can be adjusted as required. Then, the rotating cylinder is attached to the slider of a one-dimensional moving table (electric cylinder), and by driving the electric cylinder, the receiving hand can be moved above any receiving box to perform cigarette sorting.

[0113] The receiving hand of the sorting device is below the weighing dish and faces the discharge port of the low-speed lowering rod. At this time, the rotating baffle of the receiving hand is in a closed state, and the cigarette falls into the groove of the receiving hand. Next, the rotating cylinder rotates to adjust the angle of the receiving hand so that the direction of receiving the cigarette faces the direction of the receiving box. Next, the electric cylinder moves to move the receiving hand above the corresponding receiving box and hold it. At this time, the receiving hand cylinder controls the rotating baffle to open the receiving hand, and the cigarette falls into the lower receiving box, completing the sorting of the cigarette. After that, the receiving hand returns to the default position and waits for the next sorting.

[0114] Although the present invention has been described with reference to several embodiments, those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, these features and embodiments can be modified to adapt to specific situations and materials in accordance with the teachings of the present invention without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed, and all embodiments included in the claims of this application belong to the protection scope of the present invention.

Explanation of Reference Numerals

[0115] 1: Hopper 2: Microwave device 3: Measuring device 4: Sorting device 5: Housing 6: Intelligent device 31: Measuring platform 32: Electronic weighing scale 33: Measuring dish 331: Hook teeth 3311: First V-shaped groove 34: Lever 341: Lever motor 342: Second V-shaped groove 35: Front baffle 351: Elongated hole 36: Low-speed descent rod 361: Third V-shaped groove 362: Slit 37: Cigarette 41: Receiving hand 411: Rotating baffle 412: Fixed baffle 413: Rotating cylinder 414: Baffle cylinder 415: Receiving position 416: Discharge position 417: Cigarette receiving groove 42: Receiving tank 421: Receiving box 43: One-dimensional moving table 44: Drawer panel 441: Push-pull handle 45: Guide rail 46: Receiving hand cylinder

Claims

1. A comprehensive screening machine for the distribution characteristics of moisture, density, and weight of cigarette rods, comprising: a hopper (1), a microwave device (2), a weighing device (3), a sorting device (4), and an outer housing (5), wherein the hopper (1) is used to accommodate cigarette rods to be analyzed, the microwave device (2) is located downstream of the hopper (1) and is used to measure the moisture and density of the cigarette rods, the weighing device (3) is located downstream of the microwave device (2) and is used to measure the weight of the cigarette rods, the sorting device (4) is located downstream of the weighing device (3) and is used to sort the cigarette rods based on the moisture, density, and weight of the cigarette rods. A comprehensive screening machine for the distribution characteristics of moisture, density, and weight of cigarette rods, characterized by the above.

2. further comprising an intelligent device (6), wherein the intelligent device (6) controls the sorting device (4) to classify and sort the cigarette rods based on the data of the moisture, density, and weight of the cigarette rods. A comprehensive screening machine for the distribution characteristics of moisture, density, and weight of cigarette rods according to Claim 1, characterized by the above.

3. the weighing device (3) is a weighing device having a weighing pan and a buffer mechanism, comprising a weighing platform (31), and the weighing platform (31) is provided with a weighing pan and a buffer mechanism, the weighing pan comprises an electronic scale (32) and a weighing pan (33), one end of the electronic scale (32) is connected to the weighing pan (33), the weighing pan (33) is provided with a plurality of hook teeth (331) having a rake structure, the hook teeth (331) have a first V-shaped groove (3311), and the cigarette rod is horizontally arranged in the first V-shaped groove (3311) for weighing, the buffer mechanism comprises a lever (34), a front baffle (35), and a slow-drop rod (36), the lever (34) and the slow-drop rod (36) are connected to form a push-and-move slow-drop assembly, and the intersection of the two forms a second V-shaped groove (342), the second V-shaped groove (342) is located below the first V-shaped groove (3311), and when the cigarette rod is weighed in the first V-shaped groove (3311), neither the lever (34) nor the slow-drop rod (36) contacts the cigarette rod. The pushing and slow descending assembly is located between two adjacent said hook teeth (331), the pushing and slow descending assembly and the hook teeth (331) are arranged in a staggered manner with respect to each other, the front baffle (35) is located on one side of the weighing dish (33), and a plurality of elongated holes (351) are provided in the front baffle (35), the slow descending rod (36) penetrates through the elongated hole (351) to form the front baffle (35) and the third V-shaped groove (361), The operation process of the buffer mechanism is as follows. After the cigarette rod is weighed in the first V-shaped groove (3311), the lever (34) and the slow descending rod (36) rotate along their connecting parts towards the front baffle (35), so that the slow descending rod (36) moves downwards from top to bottom in the elongated hole (351), and the lever (34) pushes the cigarette rod in the first V-shaped groove (3311) and moves it along the slow descending rod to the third V-shaped groove (361). The slow descending rod (36) continues to rotate until it completely leaves the front baffle (35). At this time, the third V-shaped groove (361) disappears, and a slit (362) is formed between the slow descending rod (36) and the front baffle (35). The cigarette rod passes through the slit (362) and leaves the buffer mechanism, and the weighing and slow descending of the cigarette rod are completed. The comprehensive screening machine for the distribution characteristics of moisture, density, and weight of the cigarette rod according to claim 1, characterized in that.

4. The second V-shaped groove (342) formed by the lever (34) and the slow descending rod (36) forms an angle of 90°, a plurality of the hook teeth (331) face towards the front baffle (35), a lever motor (341) is provided on the weighing platform (31), the lever motor (341) controls the lever (34) to rotate the slow descending rod (36) towards the front baffle (35) side, when the width of the slit (362) is greater than or equal to the diameter of the cigarette rod, the cigarette rod passes through the slit (362) and leaves the buffer mechanism, the hook teeth (331) are sheet-shaped, the lever (34) is strip-shaped, and the slow descending rod (36) is cylindrical, In the metering process, before the buffer mechanism operates, the lever (34) is lower than the first V-shaped groove (3311), and the low-speed lowering rod (36) is higher than the first V-shaped groove (3311). The comprehensive screening machine for the distribution characteristics of moisture, density, and weight of the cigarette according to claim 3, characterized in that the falling speed of the cigarette is controlled by controlling the rotation speeds of the lever (34) and the low-speed lowering rod (36) to lower the cigarette at a low speed.

5. The method for the metering device (3) to meter and lower the cigarette at a low speed is as follows: a. When the cigarette falls from the previous process into the first V-shaped groove (3311), it is arranged horizontally, and the step of metering the cigarette by the electronic balance (32); b. After metering, the lever (34) and the low-speed lowering rod (36) are activated and rotated towards the front baffle (35), and the low-speed lowering rod (36) moves from top to bottom through the elongated hole (351) by the lever (34). The lever (34) pushes the cigarette in the first V-shaped groove (3311) and moves it along the low-speed lowering rod (36) to the third V-shaped groove (361); c. The low-speed lowering rod (36) continues to rotate until it completely separates from the front baffle (35). At this time, the third V-shaped groove (361) disappears, and a slit (362) is formed between the low-speed lowering rod (36) and the front baffle (35). When the width of the slit (362) is greater than or equal to the diameter of the cigarette, the cigarette passes through the slit (362) and leaves the buffer mechanism, including the step of completing the metering and low-speed lowering of the cigarette. The comprehensive screening machine for the distribution characteristics of moisture, density, and weight of the cigarette according to claim 3.

6. The sorting device (4) is a pull-out multi-stage cigarette sorting device, and includes a receiving hand (41), a receiving tank (42), a one-dimensional moving table (43), a pull-out panel (44), and a receiving box guide rail (45). The receiving tank (42) has a plurality of receiving boxes (421), and the plurality of receiving boxes (421) are arranged in parallel in the x-axis direction. The one-dimensional moving table (43) is located on one side of the receiving box (421), and has the receiving hand (41) above the one-dimensional moving table (43). The receiving hand (41) moves in the x-axis direction along the one-dimensional moving table (43) so as to be located on one side of different receiving boxes (421). One end of the receiving hand (41) is a cigarette receiving groove (417). The cigarette receiving groove (417) can rotate from the x-axis direction to the y-axis direction, receive cigarettes, and drop them into the receiving box (421). The comprehensive screening machine for the distribution characteristics of moisture, density, and weight of cigarettes according to claim 1, characterized in that by pushing and pulling the drawer panel (44), the receiving box (421) can be moved in the y-axis direction along the receiving box guide rail (45).

7. A receiving hand cylinder (46) is provided on one side of the one-dimensional moving table (43). The receiving hand cylinder (46) can reciprocate the receiving hand (41) in the x-axis direction so that the receiving hand (41) is located on one side of different receiving boxes (421). The drawer panel (44) has a push-pull handle (441). By pushing and pulling the drawer panel (44) through the push-pull handle (441), the receiving box (421) can be reciprocated in the y-axis direction along the receiving box guide rail (45). The receiving hand (41) further includes a rotating cylinder (413) that rotationally drives the cigarette receiving groove (417) so that the cigarette receiving groove (417) rotates from the receiving position (415) in the x-axis direction to the discharging position (416) in the y-axis direction, that is, the cigarette receiving groove (417) rotates from one side of the receiving box (421) to directly above the receiving box (421). When the cigarette receiving groove (417) is in the receiving position (415), the angle of the cigarette receiving groove (417) is 180° or less so as to receive the cigarette. When the cigarette receiving groove (417) is in the discharging position (416), the angle of the cigarette receiving groove (417) is greater than 180° so as to drop the cigarette into the receiving box (421). The cigarette receiving groove (417) has a V-shaped groove structure formed by a rotating baffle (411) and a fixed baffle (412). The length of the cigarette receiving groove (417) is equal to or greater than the length of the cigarette, and the length of the receiving box (421) in the y-axis direction is equal to or greater than the length of the cigarette receiving groove (417). The receiving box (421) can be taken out from the receiving tank (42). The comprehensive screening machine for the distribution characteristics of moisture, density, and weight of cigarettes according to claim 6 is characterized by this.

8. The receiving hand (41) further includes a baffle cylinder (414) that rotationally drives the rotating baffle (411) so as to change the angle between the rotating baffle (411) and the fixed baffle (412) and drop the cigarette in the cigarette receiving groove (417) into the receiving box (421). The comprehensive screening machine for the distribution characteristics of moisture, density, and weight of cigarettes according to claim 7 is characterized by this.

9. The method by which the sorting device (4) sorts the cigarettes is as follows A. A step in which the receiving hand (41) moves in the x-axis direction along the one-dimensional moving table (43) so as to be located on one side of different receiving boxes (421). B. A step in which the cigarette receiving groove (417) rotates from the x-axis direction to the y-axis direction, that is, rotates from one side of the receiving box (421) to directly above the receiving box (421), and receives the cigarette and drops it into the receiving box (421). C. A step of moving the receiving box (421) in the y-axis direction along the receiving box guide rail (45) by pushing and pulling the drawer panel (44) to detach the receiving box (421) or take out the cigarette in the receiving box (421). This includes The comprehensive screening machine for the distribution characteristics of moisture, density, and weight of the cigarette according to claim 6, characterized in that the above steps may be performed in any order. **Claim 10**: A comprehensive screening method for the distribution characteristics of moisture, density, and weight of cigarettes, comprising: using the comprehensive screening machine for the distribution characteristics of moisture, density, and weight of cigarettes according to any one of claims 6 to 9, (1) a step of accommodating the cigarette to be analyzed in the hopper (1); (2) a step of measuring the moisture and density of the cigarette using the microwave device (2); (3) a step of measuring the weight of the cigarette using the weighing device (3); and (4) a step of sorting the cigarette based on the moisture, density, and weight of the cigarette by the sorting device (4).

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